Abstract:
A pet groom and vacuum cleaner including the pet groomer are provided. The pet groomer includes a main body having two sidewalls, an actuator container, and a hollow handle for connecting with the suction hose. A comb assembly is fixed between said two sidewalls, and includes a rotatable body, and a comb teeth arranged in an axial direction of the rotatable body. A driving assembly drives the comb teeth to rotate with the rotatable body. The comb teeth rotates between a first position and a second position. The driving assembly is isolated from the suction airflow and includes an actuator element exposed out of the actuator container and extending toward the hollow handle. Motion transmission elements of the driving assembly extends from the actuator element to the comb assembly, and includes three sections.

Description:
RELATED APPLICATIONS 
       [0001]    This application is a continuation-in-part of application Ser. No. 13/761,393 filed Feb. 7, 2013, which claims priority from CN201210166508.X filed May 25, 2012 and CN201210282678.4 filed Aug. 9, 2012, each of which is incorporated herein by reference in its entirety. 
     
    
     FIELD OF THE INVENTION 
       [0002]    The invention relates to a pet groomer and a vacuum cleaner includes the pet groomer. 
       BACKGROUND OF THE INVENTION 
       [0003]    Generally, pet owners use brushes to comb their pet. The loose hair that combed from pets are comparatively thin and broken, easily flying with the wind, and can contain allergens or various bacteria and throw threats to or even destroy health of people, especially to children and sensitive people. Loose hair combed down by traditional brush can scatter in the air or on the ground or twined in comb teeth, user has to clear twined hair by hand from comb teeth. In the process, user is exposed to or even harmed by bacteria and/or allergen contained in pet hair. Besides, most comb teeth are relatively sharp and intensively arranged, so user may get hurt when clearing twined hair manually. 
         [0004]    In order to solve the problems above, U.S. Pat. No. 6,681,775 (Wang) discloses a pet brush comprised of a front plate and a base plate, lots of holes corresponding to comb teeth are set in the front plate, with many comb teeth planted on base plate which extends outside of corresponding holes in the front plate, when it is necessary to comb a pet, user operate controlling key to extend comb teeth out, then the comb teeth withdraw from corresponding holes by operating the controlling key after pet hair combed, combed hair will be stripped off comb teeth by the front plate and then dumped into trash can. Since combed loose hair can scatter in all directions when falling into trash can from comb teeth, allergens and/or bacteria may spread to pollute environment, and besides, user has to operate the controlling key in every combing process to strip off hair in comb teeth and holding the pet brush, put it into the trash can. It is inconvenience and labor waste. 
         [0005]    Based on the above, CN201010189748.2 discloses a vacuum cleaner attachment. The attachment can be connected with vacuum cleaning equipment through a pipe, the external wall of the pipe serves as an operating handle, the overlying front plate and base plate are at the other end of the pipe, many bristle-type comb teeth are planted in the base plate, the front plate has many holes and an air inlet connected with the main suction channel of vacuum cleaner, and comb teeth in the base plate extend or withdraw through holes in the front plate. A controlling key with a spring is set near the pipe handle, user operate the controlling key to move towards the pipe handle direction, to drive comb teeth to extend outwards through the holes on front plate and enter the combing status. After pet hair transferred to comb teeth, user relaxes finger to let comb teeth withdraw, meanwhile the airflow speed at the air inlet suction hole becomes higher to vacuum loose hair after it is stripped off comb teeth by the front plate. Since loose hair firstly stripped from comb teeth can fall down freely due to insufficient suction force of the main suction channel, and as the air intake direction is vertical to the front plate scattered with stripped hair, the pet hair which is at the rim of the front plate can&#39;t be completely vacuumed away easily. Furthermore, in order to avoid excessive suction force which affects comfort of pet, the suction force at the air intake hole cannot be too strong. In practice, hair stripped off from rim comb teeth can stuck on front plate after comb teeth withdrawn, user must extend and withdraw comb teeth repeatedly to move residual hair into suction hole completely, sometimes still have to use fingers to help in the final. This can obviously increase the chance of hair and allergen spreading to cause secondary pollution. Therefore, the risk that furs and allergens spread to cause secondary pollution can be increased. If there have fleas hide inside the hair combed down, they may be exposed in air on the front plate in the end of each incomplete stripping/vacuuming cycle and get chance to jump around. Many stripping and vacuuming cycles needed to comb a pet, incomplete vacuuming can multiply the chance of flea spreading. Moreover, the controlling key of the tool should be pressed to extend comb teeth outwards, and user should press the controlling key constantly during the combing process, it can be tiring for use. As the length of comb teeth is fixed, it is uneasy to control the length of comb teeth extended outside of the front plate to fit different pet hair length. Shorter extended teeth cannot comb deep enough for pets with thick hair, and longer extended teeth can hurt pets with thin hair. In order to maximize effective suction at the air inlet hole in the front plate, the tool welds different components together which makes it very difficult for consumer to replace comb teeth. If one or more comb teeth damaged, consumer will have to buy a new product. Besides, it is unavoidable that some pet hair drop in the gap of welded parts in use, it is hard for user to clean. 
       BRIEF SUMMARY OF THE INVENTION 
       [0006]    Targeting at the problems above, the present invention provides a pet groomer which is used in conjunction with the suction hose of a vacuum cleaner, comprising: a substance body which has a suction channel that is used to be connected with the suction hose and has at least one air intake which transmits air to the suction channel; a combing assembly which is used to comb pet hair; and a driving assembly which drives said combing assembly so as to make comb teeth in combing assembly to move to the air intake from a comb position. 
         [0007]    As the embodiment 1 of the invention, the pet groomer can also has the following features: the substance body also has a hollow front section which is placed outside of the air intake and the hollow front section has a comb use opening; the combing assembly is consisted of a rotating body and a plurality of groups of the comb teeth distributed in the axial direction of the rotating body; The rotating body is installed inside of the hollow front section, at least one group of the comb teeth extends outwards from the comb use opening to comb pet hair, and a rotation accepting assembly is set at one end of the rotating body; the driving assembly is formed from a knob drive assembly, the knob drive assembly has a drive unit and a knob in conjunction with the drive unit, the drive unit penetrates through aside wall of the hollow front section inosculating with the rotation accepting assembly, and the knob is exposed on external surface of the hollow front section. 
         [0008]    Further, the pet groomer of the invention in embodiment 1 can also has the following features: the driving assembly also has a rotation angle locating section which locates the rotation angle of the rotating body. 
         [0009]    Further, the pet groomer of the invention in embodiment 1 can also has the following features: the rotation angle locating section has a 3-tooth positioning block which surrounds the rotation accepting assembly, and ensures the knob drives the rotating body to rotate by 120° every time; the comb teeth has three groups, the circular pitch between two neighbor groups is 120°, and the air intake is set at the position 120° rotated from the comb position. 
         [0010]    Further, the pet groomer of the invention in embodiment 1 can also has a position limiting unit, a ratchet wheel is set at the other end of the rotating body, the position limiting unit is consisted of the ratchet wheel and a position limiting plate which is meshed with the ratchet wheel, and when the rotating body rotates by the said rotation angle, the position limiting plate and the ratchet wheel are meshed to prevent the comb teeth from leaving the comb position. 
         [0011]    Further, the pet groomer of the invention in embodiment 1 can also has the following features: the hollow front section also has an air leakage opening which may prevents excessive air force in the comb use opening from affecting comfort level of pet when combed. 
         [0012]    Besides, the pet groomer of the invention in embodiment 2 can also has the following features: the substance body also has a hollow front section which is placed outside of the air intake, and the hollow front section has a comb use opening; the combing assembly is consisted of a rotating body and a plurality of groups of the comb teeth distributed in the axial direction of the rotating body. The rotating body is installed inside of the hollow front section, at least one group of the comb teeth extends outwards from the comb use opening to comb pet hair, and a rotation accepting assembly is set at one end of the rotating body; the driving assembly is formed from a lever drive assembly which has a connecting rod driving unit and a lever connected with the connecting rod driving unit, and the connecting rod driving unit is meshed with the rotation accepting assembly. 
         [0013]    Further, the pet groomer of the invention in embodiment 2 can also has the following features: the rotation accepting assembly is a ratchet wheel, the connecting rod driving unit has a driving pawl meshed with the ratchet wheel, and the ratchet wheel and the driving pawl constitute a rotation angle locating section which regulates the rotation angle of the rotating body. 
         [0014]    Further, the pet groomer of the invention in embodiment 2 can also has the following features: the pet groomer also includes a position limiting pawl, a 6-tooth position limiting wheel is also set at the other end of the rotating body, the position limiting pawl and the 6-tooth position limiting wheel constitute a position limiting unit to ensure that the rotating body rotates by the said rotation angle. 
         [0015]    Further, the pet groomer of the invention in embodiment 2 can also has the following features: the ratchet wheel is a 6-tooth ratchet wheel, and when the lever is activated for one time, the rotating body will be driven to rotate by 60°; the comb teeth are in six groups, the circular pitch between two neighbor groups is 60°, and the air intake is set at the place 60° rotated from the comb position. 
         [0016]    Further, the pet groomer of the invention in embodiment 2 can also has the following features: the substance body also has an actuator container which is formed along and separated apart from the suction channel, the actuator container is adjacent to the hollow front section and used to contain the driving assembly, and the lever is exposed outside of the actuator container. 
         [0017]    Further, the pet groomer of the invention in embodiment 2 can also has the following features: the hollow front section also has an air leakage opening which prevents excessive air force in the comb use opening from affecting comfort level of pet when combed. 
         [0018]    Besides, the pet groomer of the invention in embodiment 3 can also has the following features: the substance body has two air intakes as the primary air intake and secondary air intake and a hollow front section which is placed outside of the two air intakes, and the hollow front section has a comb use opening; the combing assembly is consisted of a rotating body and a plurality of groups of the comb teeth distributed in the axial direction of the rotating body. The rotating body is installed inside of the hollow front section, at least one group of the comb teeth extends outwards from the comb use opening to comb pet hair, and a rotation accepting assembly is set at one end of the rotating body; the driving assembly is formed from a press-button drive assembly which has a connecting rod driving unit and a press-button which is connected with the connecting rod driving unit, and the connecting rod driving unit is meshed with the rotation accepting assembly. The comb teeth which have combed pet hair are firstly rotated to the primary air intake and then the secondary air intake in further activation. 
         [0019]    Further, the pet groomer of the invention in embodiment 3 can also has the following features: the rotation accepting assembly is a ratchet wheel, the connecting rod driving unit has a driving pawl which is meshed with the ratchet wheel, and the ratchet wheel and the driving pawl constitute a rotation angle locating section which regulates the rotation angle of the rotating body. 
         [0020]    Further, the pet groomer of the invention in embodiment 3 can also has the following features: the pet groomer also includes a position limiting pawl, a 6-tooth position limiting wheel is set at the other end of the rotating body, and the position limiting pawl and the 6-tooth position limiting wheel constitute a position limiting unit which ensures that the rotating body rotates by the said rotation angle. 
         [0021]    Further, the pet groomer of the invention in embodiment 3 can also has the following features: the ratchet wheel has 6 teeth, and when the press-button is pressed for one time, the rotating body will be driven to rotate by 60°, the comb teeth are in six groups, the circular pitch between two neighbor groups is 60°, the primary air intake is set at the position 60° rotated from the comb position, and the secondary air intake is set at the position 120° rotated from the comb position. 
         [0022]    Further, the pet groomer of the invention in embodiment 3 can also has the following features: the substance body also has an actuator container which is formed along and separated apart from the suction channel, the actuator container is adjacent to the hollow front section which is used to contain the driving assembly, and the press-button is exposed outside of the actuator container. 
         [0023]    Further, the pet groomer of the invention in embodiment 3 can also has the following features: the substance body also has an air leakage opening which prevents excessive air force in the comb use opening from affecting comfort level of pet when combed. 
         [0024]    Further, the pet groomer of the invention in embodiment 4 can also has the following features: the combing assembly is constituted of a rotating body and a plurality of groups of the comb teeth distributed in the axial direction of the rotating body. A ratchet wheel with more than one tooth space is set on one end of the rotating body. The driving assembly is constituted of a cam assembly and a connecting rod driving assembly; the cam assembly has a cam coaxial with the rotating body, a cam track which is integrated with the cam, and a driving pawl unit which is set on the cam; the driving pawl unit has a driving pawl which is meshed with the tooth space, and the connecting rod driving assembly is engaged with the cam track and drives the cam track to move, so the driving pawl can mesh with the tooth space. 
         [0025]    Further, the pet groomer of the invention in embodiment 4 can also has the following features: the driving pawl unit has a driving pawl chamber which is integrated with the cam and used to contain the driving pawl, and has a spring with one end supported by the internal surface of the driving pawl chamber; the connecting rod driving assembly is engaged with the cam track to drive the cam track to move towards the direction opposite to the rotation direction of said rotating body, so the driving pawl acts on the surface of the ratchet wheel under the elastic force of the spring, presses on the surface of the ratchet wheel flexibly in the radial direction of the cam, moves from one tooth space to next one, and meshes with the next one. 
         [0026]    Further, the pet groomer of the invention in embodiment 4 can also has the following features: a spring retaining slot is set at one end of the driving pawl, the other end of the spring is in the spring retaining slot, and the driving pawl always presses on the surface of the ratchet wheel in the radial direction of the cam under the elastic force of the spring, and moves from one tooth space to next one. 
         [0027]    Further, the pet groomer of the invention in embodiment 4 can also has the following features: the substance body also has a hollow front section which is placed outside of the air intake, the hollow front section has a comb use opening, the rotating body is installed inside of the hollow front section, and the comb teeth which is rotated to the comb position extends outside of the comb use opening to comb the pet hair. 
         [0028]    Further, the pet groomer of the invention in embodiment 4 can also has the following features: the cam assembly and the ratchet wheel constitute a rotation angle locating section to regulate the rotation angle of the rotating body. 
         [0029]    Further, the pet groomer of the invention in embodiment 4 can also has the following features: the ratchet wheel is a 6-tooth ratchet wheel, the rotation angle is 60° every time, and at least one air intake is set at the position integral multiples of 60° rotated from the comb position. 
         [0030]    Further, the pet groomer of the invention in embodiment 4 can also has the following features: the comb teeth are in six groups, the circular pitch between two neighbor groups is 60°, every group of comb teeth has two rows of stagger arrangement, and the air intake is set in the position rotated by 120° from the comb position. 
         [0031]    Further, the pet groomer of the invention in embodiment 4 can also has the following features: the comb teeth are in three groups, the circular pitch between two neighbor groups is 120°, the air intake is set at the position rotated by 120° from the comb position, when the first group of the comb teeth extends outside of the comb use opening, the rotating body rotates for two times, and when the second group of the comb teeth is rotated to the comb position, the first group of the comb teeth is rotated to the position right against the air intake; when the rotating body rotates for one time, the comb teeth is rotated to the position with 60° circular pitch from the comb position and therefore withdrawn in the hollow front section to protect the comb teeth. 
         [0032]    Further, the pet groomer of the invention in embodiment 4 can also has the following features: a position limiting pawl is also included, a 6-tooth position limiting wheel is also set at the other end of the rotating body, and the position limiting pawl and the position limiting wheel constitute a position limiting unit which ensures that the rotating body rotates by the said rotation angle. 
         [0033]    Further, the pet groomer of the invention in embodiment 4 can also has the following features: the substance body also has a flexible hose which is connected with the suction channel and an universal adaptor to be connected with the suction hose, and the universal adaptor regulates its inner diameter flexibly to ensure tight connection with the suction hose of different external diameters. 
         [0034]    Further, the pet groomer of the invention in embodiment 4 can also has the following features: an operating and prompting unit is also included which sends corresponding information according to the fact whether the comb teeth are at the comb position or not and informs the user the status of the pet groomer; when no comb teeth are in the comb position, i.e. the pet groomer is under the status of protecting the comb teeth, the operating and prompting unit sends corresponding signals to inform the user it is protecting the comb teeth status, and then drives the connecting rod driving assembly, so a group of the comb teeth will extend outside of the comb use opening; when a group of comb teeth in the comb position is at the comb use opening, i.e. the pet groomer is under combing status, the operating and prompting unit sends corresponding signals to inform the user the combing status available to comb pet hair; if the comb teeth need to be withdrawn and hidden in the pet groomer, the connecting rod driving assembly should be driven. 
         [0035]    Further, the pet groomer of the invention in embodiment 4 can also has the following features: the substance body also has an actuator container which is formed along and separated apart from the suction channel, the actuator container is adjacent to the hollow front section and used to contain the driving assembly. The connecting rod driving assembly has a press-button or a lever drive assembly which is exposed to the outside of the actuator container for selection. 
         [0036]    Further, the pet groomer of the invention in embodiment 4 can also has the following features: the substance body also has at least one air leakage opening which prevents excessive air force in the comb use opening from affecting comfort level of pet when combed. 
         [0037]    Further, according to the present invention, there is provided a vacuum cleaner, comprising: 
         [0038]    a suction hose; and 
         [0039]    a pet groomer to be used in conjunction with the suction hose, wherein the pet groomer is described above. 
         [0040]    The above and other objects and features of the present invention will become apparent from the following detailed description and the appended claims with reference to the accompanying drawings. 
         [0041]    The pet groomer and related vacuum cleaner system with said groomer provided by present invention drives the combing assembly through the driving assembly, to move pet hair combed down from pet body to air intake position so as to be vacuumed away directly, avoiding the intermediate action of stripping off hair from comb teeth or similar actions, so no loose hair can fall off from pet body in grooming to pollute environment or to transmit allergen material. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0042]    The foregoing summary, as well as the following detailed description of the invention, will be better understood when read in conjunction with the appended drawings. For the purpose of illustrating the invention, there are shown in the drawings embodiments which are presently preferred. It should be understood, however, that the invention is not limited to the precise arrangements and instrumentalities shown. 
           [0043]    In the drawings: 
           [0044]      FIG. 1  is a side perspective view of the pet groomer in embodiment 1; 
           [0045]      FIG. 2  is a perspective view of the pet groomer in embodiment 1, from bottom side; 
           [0046]      FIG. 3  is an exploded view of the pet groomer in embodiment 1; 
           [0047]      FIG. 4  is a perspective view of the pet groomer in embodiment 1, from bottom side; 
           [0048]      FIGS. 5A-D  are structural illustrations of combing assembly of the pet groomer in embodiment 1; 
           [0049]      FIG. 6  is a top view of the pet groomer in embodiment 1; 
           [0050]      FIG. 7  is an A-A section view of  FIG. 6 ; 
           [0051]      FIG. 8  is a B-B section view of  FIG. 6 ; 
           [0052]      FIG. 9  is a side perspective view of the pet groomer in embodiment 2; 
           [0053]      FIG. 10  is a perspective view of the pet groomer in embodiment 2, from bottom side; 
           [0054]      FIG. 11  is an exploded view of the pet groomer in embodiment 2; 
           [0055]      FIG. 12  is a bottom exploded view of the pet groomer in embodiment 2; 
           [0056]      FIGS. 13A-D  are structural illustrations of the combing assembly of the pet groomer in embodiment 2; 
           [0057]      FIG. 14  is an inverted side section view of the pet groomer in embodiment 2; 
           [0058]      FIG. 15  is a top view of the pet groomer in embodiment 2; 
           [0059]      FIG. 16  is an A-A section view of  FIG. 15 ; 
           [0060]      FIG. 17  is a B-B section view of  FIG. 15 ; 
           [0061]      FIG. 18  is a side perspective view of the pet groomer in embodiment 3; 
           [0062]      FIG. 19  is a perspective view of the pet groomer in embodiment 3, from bottom side; 
           [0063]      FIG. 20  is an exploded view of the pet groomer in embodiment 3; 
           [0064]      FIG. 21  is a semi-exploded view of the pet groomer in embodiment 3; 
           [0065]      FIGS. 22A-D  are structural illustrations of the combing assembly of the pet groomer in embodiment 3; 
           [0066]      FIG. 23  is an inverted side section view of the pet groomer in embodiment 3. 
           [0067]      FIG. 24  is a top view of the pet groomer in embodiment 3; 
           [0068]      FIG. 25  is an A-A section view of  FIG. 24 ; 
           [0069]      FIG. 26  is a B-B section view of  FIG. 24 ; 
           [0070]      FIG. 27  is a side perspective view of the pet groomer in embodiment 4; 
           [0071]      FIG. 28  is a perspective view of the pet groomer in embodiment 4, from bottom side; 
           [0072]      FIG. 29  is an exploded view of the pet groomer in embodiment 4; 
           [0073]      FIG. 30  is a bottom exploded view of the pet groomer in embodiment 4; 
           [0074]      FIGS. 31A-D  are structural illustrations of the combing assembly of the pet groomer in embodiment 4; 
           [0075]      FIG. 32  is an inverted side section view of the pet groomer in embodiment 4; 
           [0076]      FIG. 33  is a top view of the pet groomer in embodiment 4; 
           [0077]      FIG. 34  is an A-A section view of  FIG. 33 ; and 
           [0078]      FIG. 35  is a B-B section view of  FIG. 33 . 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0079]    Embodiments of the invention will be described in details herein below with reference to the drawings. 
       Embodiment 1 
       [0080]      FIG. 1  is a side perspective view of a pet groomer in embodiment 1;  FIG. 2  is a perspective view of the pet groomer in embodiment 1 from bottom side;  FIG. 3  is an exploded view of the pet groomer in embodiment 1;  FIG. 4  is a perspective view of the pet groomer in embodiment 1 from bottom side;  FIG. 6  is a top view of the pet groomer in embodiment 1;  FIG. 7  is an A-A section view of  FIG. 6  of the pet groomer in the embodiment; as shown by  FIG. 1 ,  FIG. 2 ,  FIG. 3 ,  FIG. 4 ,  FIG. 6  and  FIG. 7 , the pet groomer  10  to be used together with the suction hose of a vacuum cleaner includes a substance body  11 , a combing assembly  12  and a driving assembly  13 . 
         [0081]    The substance body  11  has an upper covering unit  20  and a lower covering unit  28 . The lower covering unit  28  is constituted of the front section and rear section and a suction channel  43  is set at the rear section to be connected with the suction hose of vacuum cleaner. The external wall of suction channel  43  also serves as a handle for users to operate and use the pet groomer  10 ; half circles structure  46  and  47  are set at two side ends of the front section respectively and form circles together with the upper covering unit  20  for mounting the combing assembly  12 . The front section also has a buckle  45 , a slot  53  is set at the front section of the upper covering unit  20 , and the slot  53  and the buckle  45  are fastened so that the upper covering unit  20  and the lower covering unit  28  are tightly combined together. 
         [0082]    A clamp ring  27  is also set in the substance body  11  for combining the half circle structure at the rear end of the upper covering unit  20  with the corresponding half circle at the middle of the lower covering unit  28  to clamp the upper covering unit  20  with the lower covering unit  28  tightly. The clamp ring is detachable. When it is necessary to replace the combing assembly or clean the parts between the upper covering unit  20  and lower covering unit  28 , demount the clamp ring  27  to demount the upper covering unit  20  and the lower covering unit  28 , and obviously the combing assembly mounted between the upper covering unit  20  and the lower covering unit  28  is replaceable. 
         [0083]    After the upper covering unit  20  is combined with the lower covering unit  28 , the baffle  44   b  in the upper covering unit  20  forms an air intake  44  (See  FIG. 7 ) to transmit air into the suction channel  43  together with the baffle  44   a  in the lower covering unit  28 . The best preference for the length of air intake  44  is to be longer than the contour length of any group of comb teeth  21  distributed on rotating body  22 . A hollow front section is placed outside of the air intake  44 , and a comb use opening  50  and an air leakage opening  40  are set in the hollow front section. 
         [0084]      FIGS. 5A-D  are structural illustrations of the combing assembly of the pet groomer in embodiment 1, of which views a, b, c and d are structural illustrations of the combing assembly in different directions. As shown by  FIGS. 5A-D , the combing assembly  12  is comprised of a rotating body  22  and three groups of comb teeth  21  arranged in axial direction on the rotating body  22 . Every group includes two rows of comb teeth  21 , and the interval of two adjacent groups of comb teeth  21  is 120°, and one group of comb teeth  21  extends outside of the comb use opening  50  to comb pet hair. The air intake  44  is set at the position rotated by 120° from comb position along direction A in  FIG. 7 . 
         [0085]    As the best preference for the arrangement of comb teeth  21  on rotating body  22 , for any group of comb teeth  21 , when they are located opposite to the air intake  44 , their orthogonal projection against air intake  44  should not fall beyond the contour of air intake  44 . The recommended length of comb tooth  21  is equivalent to the thickness of pet hair to be combed 
         [0086]    Felts  23  are mounted at two ends of the rotating body  22 , so the rotating body  22  is mounted in the circle  46  between the upper covering unit  20  and lower covering unit  28  to make sure that the rotating body  22  rotates around the axis and the rotating body  22  is tightly combined with the upper covering unit  20  and lower covering unit  28  to avoid furs and other sundries from flying into two side ends. Obviously the rotating body  22  is inside of the hollow front section. 
         [0087]    A driven groove  42  (i.e. rotation accepting assembly) and a 6-tooth positioning block  41  around the driven groove  42  for regulating the rotation angle of the rotating body  22  as 120° are set at one end of the rotating body  22 . 
         [0088]    The 6-tooth positioning block  41  and the positioning gear unit constitute a positioning unit, and the positioning gear unit is comprised of a positioning gear  24  to mesh with the 6-tooth positioning block  41 , a guide holder  26  fixed between the upper covering unit  20  and the lower covering unit  28 , and a spring  25  to connect the two above. The end of the positioning gear  24  connected with the spring  25  is inserted into the guide holder  26  so that the positioning gear is able to flexibly extend in the guide holder  26  under the action of the spring  25 . When the rotating body  22  rotates by 120°, the positioning gear  24  is meshed with the 6-tooth positioning block  41  to make sure that the rotation angle of the rotating body must be integral multiples of 120°. 
         [0089]    The pet groomer  10  also has a position limiting plate  31 , a ratchet wheel  52  meshed with the position limiting plate  31  is set at the other end of the rotating body  22 , the ratchet wheel  52  and the position limiting plate  31  constitute a position limiting unit, so that the ratchet wheel  52  and the position limiting plate  31  are meshed every time after the rotating body  22  rotates to prevent the rotating body  22  from rotating reversely in combing. 
         [0090]    The driving unit  13  is a knob with a rib  48 , rib  48  passes through the side end of the hollow front section and meshes with the driven groove  42 , so when the knob  29  is turned, the moment is transferred to the rotating body  22  from rib  48  to make the comb teeth  21  rotate around the axis. Comb teeth  21  can fix in the place right against air intake  44  and ensure every piece of comb teeth  21  in this group points to air intake  44  and falls inside the air stream into the air intake  44 . 
         [0091]    When the pet groomer is used to comb pet hair, firstly choose the rotating body  22  with corresponding length of comb teeth  21  to mount in the hollow front section according to different pet hair length, so to avoid scratch on pet skin owing to unsuitable lengths of comb teeth in the combing process. Then connect the pet groomer with a vacuum cleaner, and turn on the vacuum cleaner. Then the comb use opening  50  and the air leakage opening  40  transmit airflows to the air intake  44  at the same time, and the airflow enters into vacuum cleaner through the suction channel  43 . Then user holds the external wall of the suction channel  43  as handle to comb pets. In the combing process, the pet&#39;s body blocks the comb use opening  50 , the airflow from the air leakage opening  40  to the air intake  44  reduces the suction force at the comb use opening  50  and effectively avoiding excessive suction that affects comfort of pets. After a certain amount of hair is accumulated on the comb teeth, turn the knob  29  to make a new group of comb teeth  21  to the comb position, so user could continue to comb pets with the new group of comb teeth. The two rows of comb teeth  21  just combed hair are rotated by 120° along direction A (See  FIG. 7 ), which is just fixed at the position opposite to the air intake  44 , to make sure that every piece of comb teeth in the group of comb teeth  21  points to the middle of the air intake  44 , and sufficient suction force along the comb teeth extending direction will vacuum hair from the comb teeth  21  into the air intake  44 , no need external force to strip hair off comb teeth in advance. Because suction force is on the comb position in the whole process, pet hair will not drop down in the whole process. 
         [0092]    The best total sectional area of the air leakage opening  40  is 1.2 times of total sectional area of the air intake  44 , and the best total sectional area of the air intake is equivalent to the sectional area of the suction hose of the vacuum cleaner. The best airflow at the air intake is equivalent to the actual airflow of the suction hose of a vacuum cleaner, i.e. no air leaking device is between the air intake and the suction hose of the vacuum cleaner. 
       Function and Effects of Embodiment 1 
       [0093]    In summary, the pet groomer  10  in the embodiment has the knob  29  to drive the rotating body  22 , so pet hair combed are transferred to the air intake  44  and vacuumed into cleaner. No pet hair drops down in the combing process, thus not causing environmental pollution and avoiding allergen spreading. Besides, the substance body is detachable and easy for internal structure cleaning; the rotating body is replaceable, so user can choose suitable comb teeth length for his pet groomer according to different pet hair to improve the comfort level of pets in the combing process and avoid hurting pets, since pet hair is transferred to air intake through knob rotation, even hair wound in comb teeth can also be vacuumed into the air intake along the comb teeth extending direction and they will not scatter, and moreover, intermediate actions like stripping off hair from comb teeth or similar are saved. As a result the pet groomer  10  has the following features: simple structure, convenient use, labor saving, not tiring for use and no threaten to users health. 
         [0094]    The clamp ring  27  in the embodiment can screw back and forth to mesh with the steps of the upper covering unit  20  and the lower covering unit  28  to ensure tight locking between the upper covering unit  20  and the lower covering unit  28 , clamp ring  27  can also lock with the upper covering unit  20  and the lower covering unit  28  through locking slot. 
         [0095]    The comb teeth  21  in the embodiment are in three groups, it can also be in other integral group(s), and every group may has one or more rows; the quantity of the comb teeth  21  in every row is also subject to requirements, such as 20 pieces, 30 pieces, 40 pieces, 50 pieces and 60 pieces; the diameter of the comb teeth  21  is also subject to requirements, for example, φ0.3, φ0.5, φ0.6, φ0.8, φ1.0, φ1.2, φ1.5, etc. The material of the comb teeth  21  is subject to requirements like stainless steel 304, stainless steel 201, 45# plated steel, plastic PP, etc.; the top surface shape of the comb teeth  21  may be flat or others like ball-shape. 
         [0096]    The comb teeth  21  in the embodiment may be directly fixed in the rotating body  22  or firstly connected with other carriers and then fixed in the rotating body  22 . For example, the comb teeth  21  may be firstly connected with a fixing base and then mounted on rotating body  22 . The comb teeth  21  may have a movable structure for convenient of repairing and replacement. 
       Embodiment 2 
       [0097]      FIG. 9  is a side perspective view of the pet groomer in embodiment 2;  FIG. 10  is a bottom perspective view of the pet groomer in embodiment 2;  FIG. 11  is an exploded view of the pet groomer in embodiment 2;  FIG. 12  is a bottom exploded view of the pet groomer in embodiment 2;  FIG. 14  is an inverted side section view of the pet groomer in embodiment 2;  FIG. 15  is a top view of the pet groomer in embodiment 2;  FIG. 16  is an A-A section view of  FIG. 15 ;  FIG. 17  is a B-B section view of  FIG. 15 . As shown by  FIG. 9 ,  FIG. 10 ,  FIG. 11 ,  FIG. 12 ,  FIG. 14 ,  FIG. 15 ,  FIG. 16  and  FIG. 17 , a pet groomer  100  to be used together with the suction hose of vacuum cleaner includes a substance body  101 , a combing assembly  102  and a driving assembly  103 . 
         [0098]    The substance body  101  has an upper covering unit  110  and a lower covering unit  122 . The lower covering unit  122  is comprised of a front section and a rear section, a suction channel  144  is set at the rear end to be connected with the suction hose of vacuum cleaner, and the external wall of the suction channel  144  also serves as a handle for users to operate and use the pet groomer  100 ; half circles  145  are set at two side ends of the front section respectively and form circles together with the upper covering unit  100  for mounting the combing assembly  102 . The front section also has a buckle  143 , a slot  151  is set at the front section of the upper covering unit  110 , and the slot  151  and the buckle  143  can be fastened together to lock tightly the upper covering unit  110  and the lower covering unit  122 . Substance body  101  (also named as main body) comprises two side walls, wherein the combing assembly  102  is fixed. 
         [0099]    A clamp ring  123  also set in the substance body  101  for combining the half circle structure which is at the rear end of the upper covering unit  110  with the corresponding half circle which is at the middle of the lower covering unit  122  and clamp the upper covering unit  110  with the lower covering unit  122  tightly. The clamp ring  123  is detachable. When it is necessary to replace the combing assembly  102  or clean the parts between the upper covering unit  110  and lower covering unit  122 , demount the clamp ring  123  to demount the upper covering unit  110  and the lower covering unit  122 , and obviously the combing assembly mounted between the upper covering unit  110  and the lower covering unit  122  is replaceable. 
         [0100]    After the upper covering unit  110  is combined with the lower covering unit  122 , the baffle in the upper covering unit  110  is tightly combined with the corresponding baffle in the lower covering unit  122 . An air transmission channel is set in the lower covering unit  122  and connected with the suction channel  144 . An air intake  142  is set accordingly in the front of the air transmission channel to transmit air into the air transmission channel. A hollow front section is placed outside of the air intake  142 , and a comb use opening  150  and an air leakage opening  130  are set in the hollow front section. The best preference of the length of air intake  142  is to be longer than the contour length of any group of comb teeth  111  distributed on rotating body  117 . 
         [0101]    A back plate  124  is set at the bottom of the lower cover to cover the driving assembly, a screw hole  146  is set at the back plate  124 , a screw boss  152  corresponding to the screw hole  146  is set on the lower covering unit  122 , the back plate  124  is reliably connected with the lower covering unit  122  through the screw  125 , and the area between the back plate  124  and the lower cover of the air transmission channel (i.e. actuator container)-stores driving assembly  103 . 
         [0102]    The driving assembly  103  is comprised of a lever drive assembly, which is consisted of a driving pawl  113 , a connecting rod  114 , and the lever  115  which is exposed outside of the actuator container and near the suction channel  144 . It is convenient for activating when user grasps the external wall of the suction channel  144  as handle. The connecting rod  114  has a positioning cylinder  134 , a motion transmission cylinder  135  connected with the lever  115 , and a motion transmission cylinder  133  connected with the driving pawl  113 . The positioning cylinder  134  is fixed in the positioning block  154  of the lower covering unit  122 . The motion transmission cylinder  133  activates the driving pawl  113 . The driving pawl  113  has a round hole  131  and an elastic reset assembly  132 , the round hole  131  is connected with the motion transmission cylinder  133 , and the elastic reset assembly  132  is pressed on the connecting rod  114  so the driving pawl  113  interacts with the combing assembly  102  continuously. The lever  115  has a rotary positioning cylinder  137 , slotted hole  136  and a supporter groove  138  of spring  116 , the rotary positioning cylinder  137  is fixed in the tab  153  of the lower covering unit  122 , and the slotted hole  136  is connected with the cylinder  135  of the connecting rod  114  to transfer the moment. The spring supporter groove  138  contains spring  116 , so the lever  115  can reset under the action of spring  116  after activated. Lever  115  extends toward center of combing assembly  102  with an arm containing slotted hole  136  extends toward sidewall of substance body  101 . 
         [0103]      FIG. 13  is a structural illustration of the combing assembly in embodiment 2;  FIGS. 13A-D  are structural illustrations of the combing assembly in different directions. As shown by  FIGS. 13A-D , the combing assembly  102  is comprised of a rotating body  117 , a comb teeth base plate  112  and six groups of replaceable comb teeth  111  arranged in the axial direction of the rotating body, the interval between two neighbor groups of the comb teeth  111  is 60°, and a group of comb teeth  111  has one row. The air intake  142  is set at the position rotates by 60° from the comb position along direction B in  FIG. 16 . 
         [0104]    Felts  118  are mounted at two ends of the rotating body  117  so the rotating body  117  is mounted in the circle  145  between the upper covering unit  110  and the lower covering unit  122  to ensure the rotating body  117  rotates around the axis and there is no gap between the rotating body  117 , the upper covering unit  110  and the lower covering unit  122 , so that pet hair are prevented from flying into two sides. Obviously the rotating body  117  is mounted inside of the hollow front section. One group of comb teeth  111  extends outside of the opening  150  to comb. 
         [0105]    A 6-tooth ratchet wheel  147  which meshes with the driving pawl  113  is set at one end of the rotating body  117 , and the 6-tooth ratchet wheel  147  and the driving pawl  113  constitute into a rotation angle locating section to regulate that the rotation angle of the rotating body  117  is 60° in every rotation, and prevent rotating body  117  from reversing in use. 
         [0106]    The pet groomer  100  also has a position limiting gear  119 , and a 6-tooth position limiting wheel  139  is set at the other end of the rotating body  117 . The 6-tooth position limiting wheel  139  and the above mentioned position limiting gear  119 , the guide holder  121  fixed between the upper covering unit  110  and the lower covering unit  122  and a spring  120  connect the two parts constitute into a position limiting unit. The end of the position limiting gear  119  connected with the spring  120  is inserted into the guide holder  121 , so the position limiting gear  119  flexibly extends in the guide holder  121  under the action of the spring  120 . When the rotating body  117  rotates by 60°, the position limiting gear  119  is meshed with the 6-tooth position limiting wheel  139  to prevent rotating body  117  from rotating reversely. 
         [0107]    When the pet groomer is used to comb, firstly choose the rotating body  117  with proper length of comb teeth  111  to mount in the hollow front section according to pet hair length to avoid scratching pet skin in combing, or to replace comb teeth  111  in the rotating body  117  with those of best lengths. 
         [0108]    Then connect the pet groomer with a vacuum cleaner, and turn on vacuum cleaner. Then the comb use opening  150  and the air leakage opening  130  transmit airflows to the air intake  142  at the same time, and the airflow enters into vacuum cleaner through the suction channel  144 . Then the user holds the external wall of the suction channel  144  as the handle to comb pets. In the combing process, the pet&#39;s body blocks the comb use opening  150 , the airflow from the air leakage opening  130  to the air intake  142  helps reduce the suction force at the comb use opening  150  to avoid excessive suction that affects comfort of pets. After certain amounts of pet hair accumulated on the comb teeth, activate the lever  115  outside of the lower covering unit  122 , the connecting rod  114  drives the driving pawl  113  and the driving pawl  113  pushes the 6-tooth ratchet wheel  147  and therefore drives the rotating body  117  to rotate by 60°. Then a new group of comb teeth  111  is rotated to the comb position, so the user could continue to comb pets with this new group of comb teeth. The comb teeth  111  above mentioned with pet hair are rotated and fixed at the position opposite to the air intake  142 , to make sure sufficient suction airflow along the comb teeth extending direction vacuums hair from the comb teeth  111  into the air intake  142 , no need to strip off hair in the comb teeth  111  with external force. Because suction acts in the comb position in the whole process, no pet hair will drop down in the whole process. 
         [0109]    Besides, if one or more pieces of comb teeth  111  are damaged, new comb teeth can be used to replace. 
       Function and Effects of Embodiment 2 
       [0110]    The pet groomer  100  provided by the embodiment has a lever drive assembly to drive the rotating body  117  and move pet hair to the front of the air intake  142 , so airflows flowing towards air intake  142  take hair from comb teeth to vacuum cleaner in the comb teeth extending direction, and combed hair does not need to be stripped off from comb teeth with external force in advance, no pet hair would drop down in the combing process, thus not causing environmental pollution and avoiding allergen spreading. Besides, the substance body is detachable and easy for internal structure cleaning; the rotating body is replaceable, so user can choose proper comb length according to different pet hair. Every group of comb teeth is replaceable, so when one or more pieces of comb teeth  111  are damaged, new comb teeth may replace damaged ones, thus being environment-protection. Plus, choosing comb with proper teeth length according to different pet hair can improve the comfort level of pets in the combing process and avoid hurting pets at the same time. Pet hair are moved to air intake and vacuumed away once after the lever is activated. As a result the pet groomer  100  has the following features: simple structure, convenient use, labor saving, not tiring to use and no harm to user&#39;s health. 
         [0111]    The clamp ring  123  can screw back and forth to mesh with the steps of the upper covering unit  110  and the lower covering unit  122  to make both covering units lock together tightly; the upper covering unit  110  and the lower covering unit  122  could also be connected together through a locking groove. 
         [0112]    The comb teeth  111  in the embodiment are in six groups, can also be in other integral group(s), and every group may has one or more rows; the quantity of the comb teeth  111  in every row is also subject to requirements, such as 20 pieces, 30 pieces, 40 pieces, 50 pieces and 60 pieces; the diameter of the comb teeth  111  is also subject to requirements, for example, φ0.3, φ0.5, φ0.6, φ0.8, φ1.0, φ1.2, φ1.5, etc. The material of the comb teeth  111  is also subject to requirements like stainless steel 304, stainless steel 201, 45# plated steel, plastic PP, etc.; the top surface shape of the comb teeth  111  may be flat or others like ball-shape. 
         [0113]    The comb teeth  111  are firstly connected with the base plate  112 , then fixes the base plate  112  into the rotating body  117 . The base plate  112  of the comb teeth and the rotating body  117  may also be connected with a pressing plate, or by other methods. Of course the comb teeth  111  may also be mounted on other carriers and then on the rotating body. The comb teeth  111  may be a movable structure convenient for repair and replacement, or permanently fixed in the rotating body  112 . 
         [0114]    Besides, the lower covering unit  122  and the bottom back plate  124  may be connected in others ways, such as through a buckle or by ultrasonic welding. 
       Embodiment 3 
       [0115]      FIG. 18  is a side perspective view of the pet groomer in embodiment 3;  FIG. 19  is a bottom perspective view of the pet groomer in embodiment 3;  FIG. 20  is an exploded view of the pet groomer in embodiment 3;  FIG. 21  is a semi-exploded view of the pet groomer in embodiment 3;  FIG. 23  is an inverted side section view of the pet groomer in embodiment 3;  FIG. 24  is a top view of the pet groomer in embodiment 3;  FIG. 25  is an A-A section view of  FIG. 24 ;  FIG. 26  is a B-B section view of  FIG. 24 . As shown by  FIG. 18 ,  FIG. 19 ,  FIG. 20 ,  FIG. 21 ,  FIG. 23 ,  FIG. 24 ,  FIG. 25  and  FIG. 26 , a pet groomer  200  to be used together with the suction hose of vacuum cleaner includes a substance body  201 , a combing assembly  202  and a driving assembly  203 . 
         [0116]    The substance body  201  has an upper covering unit  233  and a lower covering unit  232 . The lower covering unit  232  is consisted of a front section and a rear section; and a suction channel  248  is set at the rear end to be connected together with the suction hose of a vacuum cleaner, and the external wall of the suction channel  248  also serves as a handle for users to operate and use the pet groomer  200 ; half circles  252  are set at two side ends of the front section respectively and form two circles together with the upper covering unit  233  for installing the combing assembly  202 . 
         [0117]    The front section of the lower covering unit  232  has a round hole  258 , a cylinder  253  is set at the front end of the upper covering unit  233 , and the cylinder  253  is installed in the round hole  258  to make the upper covering unit  233  rotate relative to the lower covering unit  232 . 
         [0118]    A locking ring  231  is also set in the substance body  201  which is used to combine the half circle structure at the rear end of the upper covering unit  233  with the corresponding circle in the junction area of the front and rear section of the lower covering unit  232  and clamp the upper covering unit  233  with the lower covering unit  232  tightly. The locking ring  231  is detachable. 
         [0119]    When it is necessary to replace the combing assembly  202  or clean the parts between the upper covering unit  233  and lower covering unit  232 , demount the locking ring  231  to twist and turn the upper covering unit  233  relative to the lower covering unit  232 , and obviously the combing assembly  202  installed between the upper covering unit  233  and the lower covering unit  232  is replaceable. 
         [0120]    An air transmission channel is set in the lower covering unit  232  and connected with the suction channel  248 . A primary air intake  270  is set accordingly in front of the air transmission channel to transmit air into the air transmission channel. After the upper covering unit  233  and the lower covering unit  232  are combined, the baffle  251   b  in upper covering unit  233  and the corresponding baffle  251   a  in the lower covering unit  232  form a secondary air intake  251  (See  FIG. 25 ) to transmit air to the suction channel  248 . The best preference of air intake length is, at least one air intake to be longer than the contour length of any group of comb teeth  225  distributed on rotating body  226 . A hollow front section is placed outside of the primary air intake  270  and the secondary air intake  251 . A comb use opening  257  and an air leakage opening  256  are set in the hollow front section. 
         [0121]    A separating plate  221  is fixed between the upper covering unit  233  and the lower covering unit  232 , and the separating plate  221  and the lower covering unit form an actuator container, which is used to store the driving assembly  203 , to make sure pet hairs vacuumed from the air intake enter into the suction channel  248  directly and not affect normal movements of the driving assembly. 
         [0122]    The driving assembly  203  is formed from press-button drive assembly, which is consisted of a driving pawl  222 , a connecting rod  223  and a press-button  220  which passes through the separating plate  221  and the upper covering unit  233  and is near the suction channel  248 . 
         [0123]    The connecting rod  223  has a positioning cylinder  245 , a slotted hole  262  connected with the button  220 , a driving cylinder  243  connected with the driving pawl  222  and a spring  260 . The positioning cylinder  245  is fixed on the locating tab  250  in the lower covering unit  232 . The driving cylinder  243  transmits force to move the driving pawl  222 . One end of the spring  260  is fixed with the spring fixing cylinder  259  in the lower covering unit  232  to make sure the button could reset automatically after pressed down. 
         [0124]    The button  220  has a cylinder  240  which is clamped into the slotted hole  262  in the connecting rod  223  to drive the connecting rod  223 , so the user could operate the button with his thumb when holding the external wall of the suction channel  248  to drive the combing assembly  202 . 
         [0125]    A round hole  242  and a resetting spring  241  are set in the driving pawl  222 , the round hole  242  is connected with the driving cylinder  243 , and the resetting spring  241  is pressed on the connecting rod  223  to produce elastic force which ensures interaction between the driving pawl  222  and the combing assembly  202 . 
         [0126]      FIGS. 22A-D  are structural illustrations of the combing assembly of the pet groomer in embodiment 3, of which views a, b, c and d are structural illustrations of the combing assembly in different directions. As shown by  FIGS. 22A-D , the combing assembly  202  is consisted of a rotating body  226  and six groups of replaceable comb teeth  225  distributed in axial direction in the rotating body  226 . The circular pitch of two adjacent groups of comb teeth  225  is 60°, of which every group includes one row of comb teeth  225 . The primary air intake  270  is set at the position rotated by 60° from the comb position along direction C in  FIG. 27 , and the secondary air intake  251  is set at the position rotated by 120° from the comb position along direction C in  FIG. 27 . The comb teeth  225  which has combed pet hair is turned to the primary air intake  270  firstly and then the secondary air intake  251 . 
         [0127]    Felts  227  are installed at two ends of the rotating body  226 , so the rotating body  226  is installed in the circle  252  between the upper covering unit  233  and lower covering unit  232  to make sure that the rotating body  226  rotates around the axis and the rotating body  226  is tightly combined with the upper covering unit  233  and lower covering unit  232  to avoid hairs and other sundries from flying to two sides. Obviously the rotating body  226  is inside of the hollow front section. A group of comb teeth  225  extends outside of the comb use opening  257  to comb pet hairs. 
         [0128]    A 6-tooth ratchet wheel  255  which meshes with the driving pawl  222  is set at one end of the rotating body  226 , and the 6-tooth ratchet wheel  255  and the driving pawl  222  constitute into a rotation angle locating section to regulate that the rotation angle of the rotating body  226  is 60° in every time, and prevent it from reversing in use. 
         [0129]    The pet groomer  200  also has a position limiting pawl  228 , and a 6-tooth position limiting wheel  247  is set at the other end of the rotating body  226 . The 6-tooth position limiting wheel  247  and the above mentioned position limiting pawl  228 , the guide holder  230  fixed between the upper covering unit  233  and the lower covering unit  232  and a spring  229  connect the two constitute into a position limiting unit. The end of the position limiting pawl  228  connected with the spring  229  is inserted into the guide holder  230 , so the position limiting pawl  228  flexibly extends in the guide holder  230  under the action of the spring  229 . When the rotating body  226  rotates by 60°, the position limiting pawl  228  is meshed with the 6-tooth position limiting wheel  247  to prevent the rotating body  226  from rotating reversely 
         [0130]    When the pet groomer  200  is used to comb pet hair, firstly choose the rotating body  226  with proper length of comb teeth  225  to install in the hollow front section according to different pet hairs, and avoid scratch of pet skin owing to unsuitable lengths of comb teeth during the combing process. Or just replace comb teeth  225  in the rotating body  226  to adapt to lengths of pet hairs to be combed. 
         [0131]    Then connect the pet groomer  200  with a vacuum cleaner, and turn on vacuum cleaner. Then the comb use opening  257  and the air leakage opening  256  transmit airflows to the primary air intake  270  and the secondary air intake  251  at the same time, and the airflow enters into vacuum cleaner through the suction channel  248 . Then the user holds the external wall of the suction channel  248  as the handle to comb pet. In the combing process, the pet body blocks the comb use opening  257 , the airflow from the air leakage opening  256  to the primary air intake  270  and the secondary air intake  251  reduces suction force in comb use opening  257 , so no excessive air force is in the comb use opening  257  to make pet uncomfortable when combed. 
         [0132]    After certain amounts of hairs are accumulated on the comb teeth, press down the button  220  in the upper covering unit  233 . The button  220  drives the connecting rod  223  to move through the cylinder  240 , the connecting rod  223  moves around the cylinder  245  under the driving force of the button  220 , the driving pawl  222  is driven to move by the cylinder  243  when the connecting rod  223  moves, the driving pawl  222  pushes the ratchet wheel  255  in the rotating body  226  to rotate, then the rotating body  226  is driven to rotate in direction C in  FIG. 25 , and the comb teeth  225  and the rotating body  226  rotate by 60° synchronously. A new group of comb teeth  225  is at the comb position, and the user may use the group of comb teeth to comb pet continuously. The comb teeth that has combed pet is opposite the primary air intake  270  now, and the comb teeth that faced the primary air intake  270  is now opposite the secondary air intake  251 , and so on, so hairs not cleared away in the primary air intake can be completely vacuumed away in the secondary air intake; as suction always acts at the comb position in the process, hairs will not drop down in the whole combing process. Besides, if one or more pieces of comb teeth  225  are damaged, new comb teeth can be used to replace the group of comb teeth. 
       Function and Effects of Embodiment 3 
       [0133]    The pet groomer  200  provided by the embodiment has the press-button drive assembly to drive the rotating body  226  and move pet hairs to the front of the primary air intake  270 , so hairs are vacuumed into airflows in the comb teeth extending direction and into vacuum cleaner. As the pet groomer also has the secondary air intake  251  which further clear away hairs left from the primary air intake  270 , hairs need not be stripped off from comb teeth with external force in advance and all hairs on the comb teeth can be vacuumed into vacuum cleaner by the airflow, so no loose hair can fall off from pet body in grooming to pollute environment or to transmit allergen material. Besides, the substance body is detachable and easy for internal structure cleaning; the rotating body is replaceable, so different rotation bodies with suitable comb teeth can be installed on the pet groomer according to different pet hairs. Every group of comb teeth is replaceable, so when one or more pieces of comb teeth  225  are damaged, new comb teeth may replace damaged ones, thus being environment-protection. Plus, proper comb teeth may be chosen according to different pet hairs to make pet more comfortable and avoid hurting pet when combed. Pet hairs are moved to the air intake once the button is pressed, thus avoiding intermediate actions such as stripping off hair from comb teeth or similar actions. As a result the pet groomer  200  has the following features: simple structure, convenient use, labor saving, not tiring for use and no harm to user&#39;s health. 
         [0134]    The locking ring  231  in the embodiment can screw back and forth, so the locking ring  231  can be meshed with the steps of the upper covering unit  233  and the lower covering unit  232 , to make the upper covering unit  233  and the lower covering unit  232  are tightly clamped; the upper covering unit  233  and the lower covering unit  232  could also be connected through locking slot to make the upper covering unit  233  and the lower covering unit  232  tightly clamped. 
         [0135]    The comb teeth  225  in the embodiment is in six groups, can also be other integral group(s), and every group may has one or more rows; the quantity of the comb teeth  225  in every row is also subject to requirements, such as 20 pieces, 30 pieces, 40 pieces, 50 pieces and 60 pieces; the diameter of the comb teeth  225  is also subject to requirements, for example, φ0.3, φ0.5, φ0.6, φ0.8, φ1.0, φ1.2, φ1.5, etc. The material of the comb teeth  225  is subject to requirements likewise like stainless steel 304, stainless steel 201, 45# plated steel, plastic PP, etc.; the top surface shape of the comb teeth  225  may be flat or other shape like ball shape. 
         [0136]    The comb teeth  225  in the embodiment is of moveable structure for repair and replacement; or the comb teeth may be firstly installed on carriers and then the comb teeth carrier is connected with the rotating body. 
       Embodiment 4 
       [0137]      FIG. 27  is a front perspective view of the pet groomer in embodiment 4;  FIG. 28  is a bottom perspective view of the pet groomer in embodiment 4;  FIG. 29  is an exploded view of the pet groomer in embodiment 4;  FIG. 30  is a bottom exploded view of the pet groomer in embodiment 4; 
         [0138]      FIG. 32  is an inverted side section view of the pet groomer in embodiment 4;  FIG. 33  is a top view of the pet groomer in embodiment 4;  FIG. 34  is an A-A section view of  FIG. 33 ;  FIG. 35  is a B-B section view of  FIG. 33 . As shown by  FIG. 27 ,  FIG. 28 ,  FIG. 29 ,  FIG. 30 ,  FIG. 32 ,  FIG. 33 ,  FIG. 34  and  FIG. 35 , the pet groomer  300  for connecting with the suction hose of a vacuum cleaner includes a substance body  301 , a combing assembly  302  and a driving assembly  303 . The combing assembly  302  is consisted of a rotating body  316  and multi-rows of comb teeth on the rotating body  316 . One end of the rotating body is a 6-tooth ratchet wheel with many tooth spaces. 
         [0139]    The substance body  301  has an upper covering unit  310  and a lower covering unit  324 . The lower covering unit  324  is comprised of the front section and the rear section and a suction channel  349  is set at the rear section to be connected with the suction hose of cleaner. The external wall of the suction channel  349  also serves as a handle for users to operate and use the pet groomer  300 ; circles  350  are set at two side ends of the front section (See  FIG. 29 ), and the circles  350  is used to install the end cap  314  of the rotating body  316 . Besides, the front section also has a buckle  339 , a slot  331  is set at the front section of the upper covering unit  310 , and the slot  331  and the buckle  339  are fastened so that the upper covering unit  310  and the lower covering unit  324  can be tightly combined together. Substance body  301  (also named as main body) comprises two side walls, wherein the combing assembly  302  is fixed. 
         [0140]    A locking ring  323  is also set in the substance body  301  to combine the half circle structure at the rear end of the upper covering unit  310  with the corresponding half circle at the middle of the lower covering unit  324  and clamp the upper covering unit  310  with the lower covering unit  324  tightly. The locking ring  323  is detachable. When it is necessary to replace the combing assembly  302  or clean the parts between the upper covering unit  310  and lower covering unit  324 , demount the locking ring  323  to demount the upper covering unit  310  and the lower covering unit  324 , and obviously the combing assembly  302  installed between the upper covering unit  310  and the lower covering unit  324  is replaceable. 
         [0141]    After the upper covering unit  310  is combined with the lower covering unit  324 , the baffle  347  in the upper covering unit  310  and the corresponding baffle  348  in the lower covering unit  324  combine and form an air intake  346  (See  FIG. 34 ) to transmit air into the suction channel  349 . The best preference for the length of air intake  346  is to be longer than the contour length of any group of comb teeth  315  distributed on rotating body  316 . A hollow front section is placed outside of the air intake  346 , and a comb use opening  332  and an air leakage opening  330  are set in the hollow front section. 
         [0142]    Aback-plate  327  is set at the bottom of the lower covering unit  324 , a screw hole  351  is set at the back plate  327 , a screw boss  352  corresponding to the screw hole  351  is set on the lower covering unit  324 , the back plate  327  is reliably connected with the lower covering unit  324  through the screw  328 , and the space between the back plate  327  and the lower covering unit of the air transmission channel (i.e. actuator container) is used to contain the driving assembly  303 . 
         [0143]    The substance body  301  can also has a universal adaptor to be connected with vacuum cleaner (See  FIG. 29 ). The universal adaptor includes an adapting tube  390 , a flexible hose  391 , an inner ring  392 , a sealing ring  393  and an adjusting ring  394 . The inner ring  392 , the sealing ring  393  and the adjusting ring  394  constitute a universal adaptor which could adjust its inner diameter to adapt to suction hoses of different outer diameters and realize sealing connection. The adapting tube  390  can be connected with the suction channel  349  of the lower covering unit  324 . The adapting tube  390  and the inner ring  392  are connected with one end of the flexible hose  391  respectively. The sealing ring  393  is for connecting the suction hose of vacuum cleaner. 
         [0144]    The driving assembly  303  is formed from a lever drive assembly, which is consisted of a cam assembly and a connecting rod driving assembly. The connecting rod driving assembly has a connecting rod  318  and a lever  325  exposed outside of the actuator container. 
         [0145]    The lever is integrated from a cap  342 , a cylinder  341  and a driving track  340 . The cap  342  is exposed outside of the actuator container and extends towards the suction channel  349 . User could activate the cap  342  by grasping the external wall of the suction channel  349 . The cylinder  341  is located between the cap  342  and the driving track  340  and fixed on the positioning tab  354  on the lower covering unit  324  (See  FIG. 30 ). The driving track  340  is connected with the passive cylinder  336  of the connecting rod  318  to transmit torque force to the connecting rod  318 . The connecting rod  318  has a supporting cylinder  344 , the passive cylinder  336  and a driving cylinder  335 , and the supporting cylinder  344  is fixed in the locating hole  355  of the lower covering unit  324  (See  FIG. 30 ). The connecting rod driving assembly also has a connecting rod block  317  which is used to press the connecting rod  318  tightly and prevent the connecting rod  318  from falling off. The cam assembly is consisted of a cam  311 , a cam track  334  and a driving pawl unit, of which the cam  311  has an installing hole  333  (See  FIG. 29 ) and a driving pawl chamber  353  which is integrated with the cam  311  (see  FIG. 32 ). The rotating body  316  has a 6-tooth ratchet wheel  337 , and the cylinder  345  is installed on the side of the 6-tooth ratchet wheel  337 . The cylinder  345  threads the installing hole  333  in the cam  311  and then is connected with the cap  314 , so the cam  311  is able to rotate coaxially with the rotating body  316 . Lever  325  extends from cap  342  toward center of combing assembly  302  with an arm containing driving track  340  extends toward sidewall of substance body  301 , driving assembly from driving track  340  till combing assembly  302  extends alongside sidewall of main body  301 , and all driving assembly  303  is isolated from suction airflow with cap  342  exposed outside for operation. 
         [0146]    The cam track  334  is engaged with the driving cylinder  335  on the connecting rod  318  and therefore the connecting rod driving assembly and the cam assembly is combined. When the connecting rod  318  rotates, the driving cylinder  335  drives the cam track  334  on the cam  311  to move towards the direction opposite to the rotation direction of said rotating body  316 , so the cam assembly rotates around the cylinder  345  on the rotating body  316 . 
         [0147]    The driving pawl unit has the driving pawl  313 , and the driving pawl  313  is meshed with the tooth space of the 6-tooth ratchet wheel  337  installed on the rotating body  316 . The driving pawl unit also includes the driving pawl chamber  353  within the cam  311  and the spring  312  of which one end is connected with the driving pawl  313  and the other end sticks to the inner wall of the driving pawl chamber  353 . A spring locating hole  356  is set on the driving pawl  313 , one end of the spring  312  is in the spring locating hole  356 , and the other end of the spring  312  extends outside of the driving pawl  313  and sticks to the inner wall of the driving pawl chamber  353 , so the driving pawl  313  acts on the surface of the 6-tooth ratchet wheel  337 . The 6-tooth ratchet wheel  337  is in circular arc shape, the driving pawl sticks to the surface of the ratchet wheel constantly and moves from one tooth space to next and mesh with the next tooth space. 
         [0148]    When the cap  342  of the lever  325  is activated, the lever  325  rotates around the cylinder  341 , then the driving track  340  drives the passive cylinder  336  of the connecting rod  318  to move, then the connecting rod  318  rotates around the supporting cylinder  344 , the driving cylinder  335  of the connecting rod  318  moves to drive the cam track  334  of the cam assembly to move in the peripheral direction of the rotating body  316 , the cam assembly rotates around the installing cylinder  345  of the rotating body  316 , i.e. rotating coaxially with the rotating body. When the cam assembly rotates, the driving pawl  313  is driven to move, and the driving pawl  313  sticks to the surface of the 6-tooth ratchet wheel  337  on the rotating body  316  and meshes with the tooth space of the 6-tooth ratchet wheel, so the driving pawl  313  drives the 6-tooth ratchet wheel  337  to rotate and the rotating body  316  rotates around the installing cylinder  345  (See  FIG. 32 ). When the lever  325  is released, the lever  325  rotates around the cylinder  341  to return back under the elastic force of the spring  326 , and the connecting rod  318  and cam reset accordingly at the same time, this makes the cam track  334  move in the direction opposite to the rotation direction of rotating body  316 . 
         [0149]      FIGS. 31A-D  are structural illustrations of the combing assembly of the pet groomer in embodiment 4; views a, b, c and d are structural illustrations of the combing assembly in different directions. As shown by  FIGS. 31A-D , the combing assembly  302  is consisted of the rotating body  316  and six groups of comb teeth  315 , the pitch of every group of comb teeth  315  is 60°, every group of comb teeth  315  is in two rows, and one group of comb teeth  315  out of the six groups of comb teeth  315  necessarily extends outside of the comb use opening  332  to comb pet hairs. Obviously a group of comb teeth  315  can have one or more rows. 
         [0150]    Two installing cylinders  345  at two ends of the rotating body  316  extend outwards along the axis of the rotating body  316  to install and limit the rotating body  316  is always inside the hollow front section. 
         [0151]    The 6-tooth ratchet wheel  337  which mesh with the driving pawl  313  is set at one end of the rotating body  316 , and the 6-tooth ratchet wheel  337  and the cam assembly constitute a rotation angle locating section to regulate that the rotation angle by which the rotating body  316  rotates every time is 60°, and prevent rotating body  316  from reversing in use. The ratchet wheel may be designed as 8-tooth ratchet wheel and constitutes a rotation angle locating section together with the cam assembly to regulate that rotation angle by which the rotating body  316  rotates every time is 45°. Obviously the shape of the ratchet wheel may be designed on requirements to realize other different rotation angles, and the best plan is to have rotation angles as integral times of 10° or 15°. 
         [0152]    The air intake  346  is set in the position rotated by 120° in direction D in  FIG. 34  from the comb position. Necessarily one group of comb teeth is fixed to right face the air intake  346  when the rotating body rotates every time, and air intakes may be set in angles integral times of 60° or 45° if necessary. 
         [0153]    The pet groomer  300  also has a position limiting pawl  319 , and a 6-tooth position limiting wheel  338  is set at the other end of the rotating body  316 . The 6-tooth position limiting wheel  338  and the above mentioned position limiting pawl  319 , the guide holder  321  fixed between the upper covering unit  310  and the lower covering unit  324  and the spring  320  connects the two constitute into a position limiting unit. The end of the position limiting pawl  319  connected with the spring  320  is inserted into the guide holder  338 , so the position limiting pawl  319  flexibly extends in the guide holder  321  under the action of the spring  320 . When the rotating body  316  rotates by 60°, the position limiting pawl  319  is meshed with the 6-tooth position limiting wheel  338  to prevent the rotating body  316  from rotating reversely. The position limiting pawl  338  may be also designed in 8-tooth, and after the rotating body  316  rotates by 45°, the position limiting pawl  319  meshes with the 8-tooth position limiting wheel  338  and prevents the rotating body  316  from rotating reversely. 
         [0154]    The length of the comb teeth on the rotating body  316  may vary. When the pet groomer is used to comb pet hair, firstly choose the rotating body  316  which has corresponding length of comb teeth  315  to be installed inside of the hollow front section according to different pet hairs to avoid hurting pet skin due to improper lengths of comb teeth. Or replace the rotating body  316  directly to adapt to pet hair to be combed. 
         [0155]    When the pet groomer is used, firstly connect the pet groomer with a vacuum cleaner, and turn on the vacuum cleaner. Then the comb use opening  332  and the air leakage opening  330  transmit airflows to the air intake  346  at the same time, and the airflow enters into vacuum cleaner through the suction channel  349 . In the combing process, the pet body blocks the comb use opening  332 , and the airflow from the air leakage opening  330  to the air intake  346  reduces the suction force at the comb use opening  332  to the pet body and effectively preventing excessive suction from affecting the comfort level of pet. After a certain amount of hair is accumulated on the comb teeth, activate the lever  325 , the lever  325  drives the connecting rod  318  through the driving track  340 , the connecting rod  318  drives the cam assembly to rotate, and the cam assembly drives the driving pawl  313  to rotate on the surface of the 6-tooth ratchet wheel and extend flexibly in the axial direction of the cam under the elastic force of the spring, so the 6-tooth ratchet wheel  337  is driven to rotate, then the rotating body  316  is driven to rotate by 60° by every activation. Then a new group of comb teeth  315  is rotated to the comb position, user may continue combing pet hair with the new group of comb teeth, and the comb teeth  315  that has combed pet hair is rotated by 60°. When a certain amount of pet hair is accumulated on the comb teeth at the comb position, activate the lever again, the present comb teeth  315  is rotated by another 60°, the previous comb teeth  315  with hair is rotated to the air intake  346 , and hair will be vacuumed into the air intake  346  from the comb teeth  315 , no external force is needed to strip off hair from comb teeth in advance. Because the suction acts at the comb position in the whole process, hairs will not drop down. The rotation angle of the comb teeth  315  may be other angles if necessary, and the best plan is integral multiples of 10° or 15°. 
         [0156]    When comb teeth with hair are rotated to the position close to the air intake, in order to ensure pet hair wound on comb teeth can be vacuumed away completely, make sure every piece of comb teeth in this group points at the middle of the air intake, so the extending direction of every piece of comb teeth in the group keeps consistent with the vacuuming direction of the main suction airflow, rigorous paralleling is preferred, and make sure every piece of comb teeth in the group is inside of the main vacuuming airstream completely instead of partly, so the suction airflow could clear hairs away by overcoming only the frictional force between hair and smooth comb teeth. 
       Function and Effects of Embodiment 4 
       [0157]    The driving pawl, which moves flexibly in axial direction of cam and meshes with the tooth space of the ratchet wheel, is adopted in the embodiment and constantly sticks to the surface of the ratchet wheel, moves from one tooth space to the next one, and meshes with the next tooth space to make sure the driving pawl drives the ratchet wheel to rotate by required angle, the structure is stable and reliable; besides, the pet groomer has a lever drive assembly to drive the rotating body  316 , and pet hair is moved to close to the air intake  346 , so pet hair is vacuumed into vacuum cleaner in the extending direction of the comb teeth and does not need external force to strip off hair from comb teeth in advance. No loose hair can fall off from pet body in grooming to pollute environment or to transmit allergen material. Besides, the substance body is detachable and easy for internal structure cleaning; the rotating body is replaceable, so different rotation bodies with proper comb teeth can be installed on the pet groomer according to different pet hair. Every group of comb teeth is replaceable, so when one or more pieces of comb teeth  315  are damaged, new comb teeth may replace damaged ones, thus being environment-protection. Plus, proper comb teeth may be chosen according to different pet hairs to make pet more comfortable and avoid hurting pet at the same time when combed. Pet hairs are moved to the air intake once the lever is activated, so the structure is simple and the operation is convenient. The pet groomer can be connected with the suction hose of vacuum cleaner through a flexible hose to realize convenient grooming, labor saving and not to fatigue the user easily; an adjusting ring is adopted in this case to adjust the sealing ring to be connected with the suction hose of vacuum cleaner which has different diameters, thus making the use more convenient. 
         [0158]    In the pet groomer in embodiment 4, the external wall of the suction channel is used as the handle to grasp the pet groomer. Handles may be set in the upper covering unit or other proper positions of the pet groomer of the present invention to enable the user to operate and control the pet groomer conveniently. 
         [0159]    The connecting rod driving assembly of the present invention extends outside of the substance body, and the part for the user to operate the pet groomer in embodiment 4 is a lever. Obviously the lever may be replaced by a press button and other driving parts. 
         [0160]    One air leakage opening is set on the substance body of the present invention in embodiment 4, and obviously more air leakage openings may be set at other positions of the substance body if necessary to prevent excessive air force at the comb use opening from affecting the comfort level of pet when combed. 
         [0161]    One group of comb teeth is arranged by every 60° in the present invention in embodiment 4, and altogether six groups are arranged, which could also be replaced by three groups of comb teeth uniformly distributed on the rotating body. When the comb teeth are in three groups, the circular pitch of every group is 120° and these three groups are uniformly distributed on the rotating body  316 , after a certain amount of pet hair is accumulated on the comb teeth at the comb position, once the lever  325  is activated, the comb teeth  315  are still rotated by 60°, and there are no comb teeth  315  under combing status at the comb position, so hair from pet body or dropping to the ground may be vacuumed through the comb use opening  332 . When the lever  325  is activated again, the comb teeth  315  with hair are rotated to the air intake  346 , adequate suction is at the air intake  346  to vacuum pet hair from comb teeth  315  to the air intake, and meanwhile another group of comb teeth  315  is under combing status and continues to comb pet hair. 
         [0162]    The comb teeth on the rotating body may also be in four groups which are uniformly distributed on the rotating body with a circular pitch of 90°. After a certain amount of pet hair is accumulated on the comb teeth at the comb position, once the lever  325  is activated, the comb teeth  315  are rotated by 45°, and there are no comb teeth  315  under combing status at the comb position, so hair from pet body or dropping to the ground may be vacuumed through the comb use opening  332 . When the lever  325  is activated again, the comb teeth  315  with hair are rotated by 90° totally from beginning, and then another group of comb teeth  315  is under combing status and continues to comb pet hair. When lever  325  is activated by the 3&lt;rd &gt;time, the 1&lt;st &gt;group of comb teeth  315  with hair are rotated to the air intake  346 , adequate suction is at the air intake  346  to vacuum pet hair from comb teeth  315 , and meanwhile there are no comb teeth  315  under combing status at the comb position, so hair from pet body or dropping to the ground may be vacuumed through the comb use opening  332 . 
         [0163]    Comb teeth on the rotating body may be distributed in different angles if necessary and withdrawn in correspondingly proper circular pitch. In the present invention, when the group number of comb teeth is m (m is an integral number), the quantity of tooth spaces on the ratchet wheel is recommended to be integral multiples of m. 
         [0164]    When the comb teeth could be withdrawn in the pet groomer, in order to facilitate convenient use, an operation unit is set to the main body which sends corresponding information to inform the status of the pet groomer according to the fact whether comb teeth are at the comb position or not. When there are no comb teeth extending outside of the comb use opening, i.e. the pet groomer is under comb teeth protecting status, the operating and prompting unit sends corresponding signals to inform the user of the comb teeth protecting status, and after the lever is activated for n (n is an integral number) times, one group of comb teeth extends outside of the comb use opening; when one group of comb teeth is at the comb use opening, i.e. the pet groomer is under combing status, the operating and prompting unit sends corresponding signals to inform the user of the combing status, the user could comb pet hair, and if the comb teeth need to be withdrawn in the pet groomer, the lever should be activated for m (m is an integral number) times. Obviously under two circumstances that three groups of comb teeth are set when the rotation angle is 60° and four groups of comb teeth are set when the rotation angle is 45°, when there are no comb teeth at the comb position, i.e. the pet groomer is under comb teeth protecting status, the operating and prompting unit sends corresponding signals to inform the user of the comb teeth protecting status, and the connecting rod driving assembly is driven to make one group of comb teeth extend outside of the comb use opening; when one group of comb teeth is under combing status at the comb position, i.e. the pet groomer is under combing status, the operating and prompting unit sends corresponding signals to inform the user of the combing status, the user could comb pet hair, and if the comb teeth need to be withdrawn in the pet groomer, the connecting rod driving assembly should be driven for one time. 
         [0165]    As a specific plan, we may adopt indicators of two different colors to send corresponding signals, and give further descriptions about indicators with words or graphs. 
         [0166]    Besides, if one or more pieces of comb teeth  315  are damaged, new comb teeth can be used to replace or just turn to a new rotating body with proper comb teeth. 
         [0167]    The locking ring  323  in the embodiment connects the upper covering unit  310  with the lower covering unit  324  through the locking groove to make the upper covering unit  310  and the lower covering unit  324  tightly locked. 
         [0168]    The comb teeth  315  in embodiment 4 are in six groups, and it can also be in other integral group(s), for example, three groups, four groups, eight groups, etc., and every group may has one or more rows; the quantity of the comb teeth  315  in every row is also subject to requirements, such as 20 pieces, 30 pieces, 40 pieces, 50 pieces and 60 pieces; the comb teeth of different rows may be distributed on the rotating body in a staggered arrangement way. 
         [0169]    Besides, six groups of comb teeth  315  in the embodiment all are distributed perpendicular to the rotating body, so the pointing direction (i.e. the extending direction of the comb teeth) of every group of comb teeth when rotated to the air intake is consistent with the main direction of the airflow which is vacuumed into the air intake. In the pet groomer of the present invention, the comb teeth may be distributed in the rotating body in other forms (such as curve extending way), as long as every piece of comb teeth in the group points at the air intake and gets in the main channel of vacuuming airflow when rotated to the front of air intake. 
         [0170]    The diameter of the comb teeth in the present invention is also subject to requirements, for example, φ0.3, φ0.5, φ0.6, φ0.8, φ1.0, φ1.2, φ1.5, φ1.8, φ2.0, φ2.5, etc.; the material of the comb teeth  315  is subject to requirements likewise like stainless steel 304, stainless steel 201, 45# chromed steel, plastic PP, plastic PVC etc.; in order to prevent plastic comb teeth  315  from producing static electricity, antistatic agent may be added to the material, or static may be eliminated by adding a metal strip. The top surface shape of the comb teeth  315  may be flat or other shape like ball-shape. Some rectangular or round ventilating slots may be added to the surface of the rotating body  316  to help vacuuming pet hair on the comb teeth. The rotating body surface may have some grooves  343  to clear away pet hair which is winded on the rotating body more easily. 
         [0171]    The comb teeth  315  may be firstly connected with comb teeth base plate, then the comb teeth base plate assembled on the rotating body  316 , and the comb teeth base plate and the rotating body  316  can also be connected through a pressing plate, etc. Of course the comb teeth  315  may also be installed on other carriers and then on the rotating body. The comb teeth  315  may be a movable structure convenient for repair and replacement, or directly fixed in the comb teeth rotating body  316 . 
         [0172]    Besides, the lower covering unit  324  and the bottom back plate  327  may be connected in others ways, such as through a buckle or ultrasonic welding. 
         [0173]    It will be appreciated by those skilled in the art that changes could be made to the embodiments described above without departing from the broad inventive concept thereof. It is understood, therefore, that this invention is not limited to the particular embodiments disclosed, but it is intended to cover modifications within the spirit and scope of the present invention as defined by the appended claims.