Abstract:
An industrial dust collector comprises a frame body, a suction device attached to the frame body, a suction device attached to the suction device. The frame body has a containing cavity for containing the suction device. A supporting device is disposed between the suction device and the frame body for the suction device being movably attached to the frame body, so that the suction device can move between an unfolding status and a containing status. In the unfolding status, the suction device is unfolded relative to the containing cavity; in the containing status, the suction device is contained in the containing cavity. Therefore, the industrial dust collector has the advantages of small packaging size, convenient transportation and low transportation cost.

Description:
FIELD OF THE INVENTION 
       [0001]    The present invention relates to an industrial dust collector, and more particularly to an industrial dust collector with small packaging size and convenient transportation. 
       BACKGROUND OF THE INVENTION 
       [0002]    The traditional industrial dust collector comprises a base, a housing and support legs arranged at the base, a plurality of filtering bags disposed above the housing, a plurality of dust collecting bags disposed below the housing. A plurality of dust outlets are disposed in the housing, and each of the dust outlet is respectively corresponded with the filtering bags and the dust collecting bags. An air pump opposite to a dust inlet is attached to one end of the housing. At least one soft dust collecting tube is disposed above the dust inlet. 
         [0003]    The operating of the industrial dust collector is initiated by the start of the air pump, which generates a airflow to suck the dust and the other wastes through the dust inlet and enter into the housing via the dust collecting tube. Air is directly released through the filtering bags, while the dust and other wastes are deposited in the dust collecting bag. 
         [0004]    The traditional industrial dust collector is stationary. Therefore, an extended dust collecting tube must be employed so as to permit the industrial dust collector to reach every corner of the shop floor. As a result, the efficiency of the industrial dust collector is influenced by the length of the dust collecting tube. The length of the dust collecting tube is longer, and the efficiency of the industrial dust collector is lower. 
         [0005]    So those persons skilled in the art have made some improvement. For example, U.S. Pat. No. 5,163,985 describes a movable industrial dust collector, which comprises a base, a support set disposed on the base, a suction set fixedly attached to the support set, a filtering set attached to the suction set, and wheels attached to the base for convenient moving of the industrial dust collector. The suction set comprises a housing, a motor disposed in the housing, a suction fan driven by the motor, and a dust inlet located at one end of the housing and two dust outlets located at another end of the housing. The motor is set at the top of the housing. The dust inlet is disposed at the below of the housing and is connected with a hole in the base via a suction tube. The filtering set comprises a filtering bag disposed over the housing and a dust bag arranged under the housing. The filtering bag and the dust bag are set up in such a way that their open ends are respectively fitted the dust outlets. So the motor is initiated, and the stream of suction is generated by the rapid rotation of the suction fan to draw the dust and the other wastes into the suction set via the dust inlet. Then the air drawn into is finally released via the filtering bag, while the dust and the other wastes are deposited in the dust bag. Push the industrial dust collector which is provided with the wheels to reach every corner of the shop floor and to do the cleaning of the floor, while the extended dust collecting tube must not be employed. Thus, the efficiency of the industrial dust collector is enhanced and it is convenient to operate. 
         [0006]    But the suction set of the industrial dust collector is fixedly attached to the support set and the motor is set up over the housing, which made the industrial dust collector having a large packaging size with high transportation cost. And also need more space for storage. 
       SUMMARY OF THE INVENTION 
       [0007]    One object of the present invention is to provide an industrial dust collector with small packaging size, convenient transportation and lower transportation cost. 
         [0008]    Another object of the present invention is to provide an industrial dust collector which is convenient to be converted between an unfolding status and a containing status. 
         [0009]    In order to realize one of the above objects, the present invention provides an industrial dust collect comprising: a frame body, a suction device attached to the frame body and a filtering device attached to the suction device, wherein the suction device comprising a housing, a motor disposed in the housing, a suction fan driven by the motor, a dust inlet and a dust outlet disposed in the housing, wherein the frame body comprising a containing cavity for containing the suction device, the suction device is movably attached to the frame body so that the suction device can move between an unfolding status and a containing status, when the suction device is in the unfolding status, it being unfolded relative to the containing cavity; when the suction device is in the containing status, the suction device is contained in the containing cavity. 
         [0010]    Preferably, a supporting device is disposed between the suction device and the frame body for supporting the suction device. 
         [0011]    Preferably, the supporting device comprises a first link and a second link pivotally connected to the first link, and wherein the first link is fixedly pivotable to the suction device, the second link is pivotable to the frame body, the first link is movably pivotable to the second link. 
         [0012]    In the unlocking status, the first link and the second link are substantially located in a line so that the first link and the second link are self-locked each other. 
         [0013]    The supporting device further comprises a joint member, the joint member is fixedly attached to the suction device and fixedly pivotable to the frame body. 
         [0014]    Preferably, the dust outlet and the motor are respectively disposed on two sides of the suction device. In the unlocking status, the motor is positioned under the dust outlet. 
         [0015]    Compared with the prior art, the present invention has advantages that the suction device is movably attached to the frame body so that the suction device can move between an unfolding status and a containing status, in the unfolding status, the suction device is unfolded relative to the containing cavity, and the industrial dust collector can normally work; in the containing status, the suction device is contained in the containing cavity. This reduces the industrial dust collector package volume. It is easily transport, and the transportation cost is reduced. 
         [0016]    The supporting device is disposed between the suction device and the frame body. If the operator pull the link of the self-locked, the suction device is pivotable relative to the frame body, so that the suction device is easily movable between the unlocking status and the containing status. The supporting device has self-locked function, so that the suction device is kept stationary relative to the frame body during converting form the containing status to the unlocking status, while other fixed mechanisms are not to be employed; the suction device is pivotally to be contained in the containing cavity during converting from the unlocking status to the containing status, while other fixed mechanisms are not to be released. Therefore the suction device is convenient to be converted between the unlocking status and the containing status. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0017]    The invention will now be described in a non-limitative sense with reference to the accompanying figures in which: 
           [0018]      FIG. 1  is a three-dimensional view of one embodiment of an industrial dust collector according to the present invention. 
           [0019]      FIG. 2  is a three-dimensional view of one embodiment of a frame body of the industrial dust collector according to the present invention. 
           [0020]      FIG. 3  is a partially enlarged view of  FIG. 2 . 
           [0021]      FIG. 4  is a perspective view of one embodiment of the industrial dust collector according to the present invention, wherein the suction device is in an unlocking status. 
           [0022]      FIG. 5  is a three-dimensional view of one embodiment of the industrial dust collector of the present invention without a filtering device. 
           [0023]      FIG. 6  is a right view of one embodiment of the industrial dust collector according to the present invention without a filtering device. 
           [0024]      FIG. 7  is a three-dimensional view of one embodiment of the industrial dust collector according to the present invention without a filtering device, wherein the suction device is pivotable relative to the frame body. 
           [0025]      FIG. 8  is a three-dimensional view of one embodiment of the industrial dust collector of the present invention without a filtering device, wherein the suction device is in a containing status and the support mechanism is pivotable relative to the frame body. 
           [0026]      FIG. 9  is a three-dimensional view of one embodiment of the industrial dust collector of the present invention, wherein the suction is in the storage status and the support mechanism is pivoted to be parallel to the first side surface. 
           [0027]      FIG. 10  is perspective view of one embodiment of the industrial dust collector of the present invention, wherein the industrial dust collector is in a storage status or in a transportation status. 
           [0028]      FIG. 11  is a three-dimensional view of one embodiment of the industrial dust collector of the present invention, wherein the suction device is in a containing status, and the handle is pivotable relative to the frame body. 
           [0029]      FIG. 12  is a three-dimensional view of one embodiment of the industrial dust collector of the present invention, wherein the suction device is in containing status, and the handle is stationary relative to the frame body. 
           [0030]      FIG. 13  is perspective view of one embodiment of the industrial dust collector of the present invention, wherein the industrial dust collector is in a transportation status. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0031]    As shown in  FIG. 1 , an industrial dust collector  1  includes a frame body  2 , a suction device  4  attached to the frame body  2  and a filtering device  6  attached to the suction device  4 . 
         [0032]    The frame body  2  is a frame structure. As shown in  FIG. 2 , the frame body  2  includes a pair of opposite side frames  8 , and a U-shaped rod  30  connecting with the side frames  8 . 
         [0033]    Each of the side frames  8  includes a first., a second connecting rod  11 ,  12  which are longitudinally extended, a third, a fourth connecting rod  13 ,  14  which are longitudinally extended. The third connecting rod  13  and the fourth connecting rod  14  are connected with the first and the second connecting rod  11  and  12 . In the present embodiment, the first, the second, the third and the fourth connecting rod  11  and  12  and  13  and  14  are integrally formed. Of course, as known to the persons skilled in the art, the first, the second, the third and the fourth connecting rod  11  and  12  and  13  and  14  may be independent unit and to be connected by welding. 
         [0034]    The first connecting rod  11  lies in a first side surface  18 , and the second connecting rod  12  lies in a second side surface  20  which is parallel to the first side surface  18 . Of course, the first side surface  18  may be unparallel to the second side surface  20 . 
         [0035]    The pair of side frames  8 , the first side surface  18  and the second side surface  20  are formed of a containing cavity  22 . The containing cavity  22  is adapted for containing the suction device  4 . 
         [0036]    Each of the side frames  8  is connected with a side board  24 . Two fifth connecting rods  26  are connected with the two side boards  24 . The body frame  2  further comprises two connecting members  29  for connecting with the two fifth connecting rods  26 . And two connecting members  29  are symmetrically disposed. 
         [0037]    An inner box  32  is disposed in the containing cavity  22 . The inner box  32  is composed of a bottom plate  34 (shown as  FIG. 1 ) and an annular wall connected with the circumference edge of the bottom plate  34 . The wall is composed of a first plate  36 , a second plate  37  opposite to the first plate  36 , and two side plates  38  facing towards each other. As shown in  FIG. 1  and  FIG. 2 , the inner box  32  is connected between the U-shaped rod  30 , the third connecting rod  13  and the side boards  24 . 
         [0038]    The side plate  38  has projecting blocks  35  and a groove  39 . 
         [0039]    As shown in  FIG. 2 , a support mechanism  40  is disposed in the inner box  32 . The support mechanism  40  includes a protruding ear  42  pivotally attached to the side plate  8  of the inner box  32 , and a support board  44  attached to the protruding ear  42 . 
         [0040]    As shown in  FIG. 3 , the first plate  36  of the inner box  32  has a pivotale hook  48 , and the protruding ear  42  has a slot  46  for engaging with the hook  48 . When the hook  48  is engaged with the slot  46 , the support mechanism  40  is stationary relative to the inner box  32 ; when the hook  48  is disengaged with the slot  46 , the support mechanism  40  is pivotable relative to the inner box  32 . 
         [0041]    As shown in  FIG. 5 , the suction device  4  is pivotally attached to the frame body  2  by a supporting device  50 . The suction device includes a housing  70 , a motor  80  disposed on the housing  70 , a suction fan (not shown in the figures) driven by the motor  80 , and a dust inlet  76  and two dust outlets  78  respectively disposed in the housing  70 . 
         [0042]    The housing  70  includes a narrower upper housing  72  and a wide lower housing  74 . The dust inlet  76  is disposed on the upper housing  72 . Two dust outlets  78  are respectively disposed on the upper housing  72  and the lower housing  74 . Circumferences flanges  84  and  86  extending out of the housing  70  are respectively disposed in the dust inlet  76  and the dust outlets  78 . 
         [0043]    The motor  80  is disposed under the housing  70  and received in the containing cavity  22  all along. When the suction device  4  is contained in the containing cavity  22  of the frame body  2 , the whole volume of the industrial dust collector  1  is reduced. The motor  80  is provided with a drive shaft (not shown in the figures) to drive the suction fan which is fixed to the dust inlet  76  by the conventional manner. 
         [0044]    The motor  80  is provided with a switch  82 . 
         [0045]    Initiating the switch  80 , airflow will be generated by the rapid rotation of the suction fan driven by the motor  80 . As a result, the dust and the other wasters will sucked into the suction device  4  by the dust inlet  76 . 
         [0046]    As shown in  FIG. 4 , the filtering device  6  includes a filtering bag  88  disposed above the suction device  4  and a dust collecting bag  89  arranged below the suction device  4 . 
         [0047]    The filtering bag  88  and the dust collecting bag  89  are respectively fitted over the corresponding circular flanges  86  of the dust outlets  78 . 
         [0048]    The filtering bag  88  is made of breathable material and is suspended over the suction device  4  by means of a suspension rod  90 . The suspension rod  90  is detachably fastened to the suction device  4 . 
         [0049]    The suspension rod  90  is composed of a straight rod  92  and a bent rod  94 . The straight rod  92  is used to connect with the suction device  4 . The bent rod  94  is used to facilitate the suspension of the filtering bag  88  over the suction device  4 . 
         [0050]    As shown in  FIG. 4 , the suspension rod  90  composed of the straight rod  92  and the bent rod  94  supports the filtering bag  88 . As shown in  FIG. 5 , the straight rod  92  is detached with the bent rod  94  and they are respectively stored in the projecting blocks  35  of the side blocks  38 . 
         [0051]    The air together with dust and the other wasters is drawn into the industrial dust collector  1 . The air is released into the atmosphere via the filtering bag  88 , while the dust and the other wasters are deposited in the dust collecting bag  89 . 
         [0052]    As shown in  FIG. 7 , the supporting device  50  includes a first link  54  and a second link  56  pivotally connected with respect to each other. Wherein the first link  54  is fixedly pivotable to the suction device  4 , the second link  56  is fixedly pivotable to the frame body  2 . The first link  54  is movably pivotable to the second link  56 . 
         [0053]    The first link  54  has a first end  59  pivotally attached to the suction device  4  and a second end  60  movably connected with the second link  56 . The first end  59  is connected with the suction device  4  via a fixed pivot. The second link  56  has a first end  61  pivotally attached to the second end  60  of the first link  54  and a second end  62  pivotally attached to the inner box  32 . The second end  60  of the first link  54  is connected with the first end  61  of the second link  56  via a movable pivot. The second end  62  of the second link  56  is pivotally connected with the inner box  32  via a fixedly pivot. 
         [0054]    As shown in  FIG. 4  and  FIG. 5 , the first link  54  and the second link  56  are substantially located in a line, so that the links  54  and  56  a dead point. That is the first link  54  and the second link  56  are self-locked each other. Thus, the suction device  4  is stationary relative to the frame body  2 . 
         [0055]    Of course, in order to be fastened securely, as shown in  FIG. 7 , the second end  60  of the first link  54  is provided with a recess  63 . The first end  61  of the second link  56  is provided with a protrusion  64  for engaging with the recess  63 . When the first link  54  rotates to a position that the first link  54  and the second link  56  are located in a line, the protrusion  64  will be engaged with the recess  63 . As a result, the suction device  4  is securely fixed relative to the frame body  2 . 
         [0056]    If the recess is disposed on the second link  56  and the protrusion is disposed on the first link  54 , the suction device  4  is also fastened securely. So, the first link  54  and the second link  56  are lockable with respect to each other at any desired angle by engagement of the protrusion  64  and the recess  63 . That is the suction  4  may be fixed relative to the frame body  2  at any desired angle as required. 
         [0057]    If it needs to be stored, the suction device  4  may pivot relative to the frame body  2  by the supporting device  50 . But because the protrusion  64  of the second link  56  is engaged with the recess  63  of the first link  54 , the second link  56  is only rotatable in a counter-clockwise direction (E direction as shown in  FIG. 5 ). If the second link  56  rotates in a clockwise direction, the recess  63  of the first link  54  will be stopped by the protrusion  64  of the second link  56  to prevent the second link  56  from rotating in a clockwise direction. As a result, the first link  54  and the second link  56  will not over clamped in an opposite direction. So the user only needs to pull the first link  54  or the second link  56 , and to rotate the first link  54  or the second link  56  in a counter-clockwise direction (E direction as shown in  FIG. 5 ). 
         [0058]    The supporting device  50  further comprises a joint member  52 . The joint member  52  is fixedly attached to the suction device  4  and fixedly pivotable to the frame body  2 . 
         [0059]    The joint member  52  has a first end  57  and a second end  58  opposite to the first end  57 . The first end  57  is fixedly connected with the suction device  4  by a screw fixed manner. The second end  58  is fixedly pivotable to the connecting members  29  of the frame body  2 . That is the second end  58  of the joint member  52  is pivotally connected with connecting members  29  via a fixed pivot. 
         [0060]    As shown in  FIG. 2 , the second connecting rod  12  is connected with the third connecting rod  13  through curved connection. The frame body  2  is provided with wheels  15  for easy carrying. The wheels  15  are disposed at curved connection between the second connecting rod  12  and the third connecting rod  13  via a rotating shaft  16 . As shown in  FIG. 6 , the side frame  8  is not a real rectangle, and the middle portion of the first connecting rod  11  and the second connecting rod  12  are curved inwards. So that it is convenient to mount the wheels  15  and a distance of the wheels and frame body  2  is reduced. 
         [0061]    The frame body  2  is provided with a handle  10  for easy transportation. As shown in  FIG. 5 , in middle portion of the fifth connecting rod  26 , the frame body  2  is provided with a coupling member  27  for connecting with the two fifth connecting rods  26 . The handle  10  is rotatably connected to the coupling member  27  around a pivot shaft  28 . A locking mechanism is disposed between the handle  10  and the coupling member  27  for fixing the handle  10  to the coupling member  27 . 
         [0062]    As shown in  FIG. 11 , the locking mechanism includes apertures  17  which is disposed in and passed through the handle  10 , a pair of detent members  19  (only one detent member is shown in  FIG. 11 ) symmetrically disposed in the apertures  17 , a spring (not shown) disposed between the two detent members  19 , and detent holes  21  and  23  disposed in the coupling member  27  for engaging with the detent members  19 . The detent members  19  are respectively disposed on two ends of the apertures  17  and biased toward the direction of going beyond the apertures  17  by the spring. But the detent members  19  can not disengage with the apertures  17  because of the steps (not shown) on the detent members  19 . 
         [0063]    The detent holes  21  and  23  are respectively disposed on two ends of the coupling member  27 . As a result, the handle  10  can be fixed in two positions of the coupling member  27 . 
         [0064]    As shown in  FIG. 5 , the detent members  19  is engaged with the detent holes  23 , thus the handle  10  is stationary relative to the frame body  2  and the handle  10  is in a storage status. After the user pull the handle  10  to pivot relative to the frame body  2 , the detent members  19  compresses the spring so that the detent members  19  disengages with the detent holes  23 , as shown in  FIG. 11 , the detent members  19  is freely rotatable around the pivot shaft  28 ; as shown in  FIG. 12 , when the detent members  19  rotates to a predetermined position and automatically engaged with the detent holes  21 , the handle  10  is stationary relative to the frame body  2  and the handle  10  is in a working position. 
         [0065]    The suction device  4  is movable relative to the frame body  2  and has an unfolding status and a containing status. 
         [0066]    As shown in  FIG. 4 , the suction device  4  is in the unfolding status, and the industrial dust collector is in working position. At this time, the first link  54  and the second link  56  are self-locked each other, and the suction device  4  is stationary relative to the frame body  2 , without other fixing mechanism to be employed. The suction device  4  is substantially perpendicular to the side surface  18 . The wheels  15  contacts with the floor, the support board  44  is stationary relative to the frame body  2  via the engagement of the hook  48  with the slot  46 . The support board  44  is perpendicular to the side surface  18  and contacts with the floor. The support board  44  supports the dust collecting bag  89  and the whole industrial dust collection  1  together with the wheels  15  to increase the stability of the industrial dust collector  1 . If the industrial dust collector  1  needs to be moved, the user only needs to lift up the support board  44  a little bit. Of course, the industrial dust collector  1  can be supported by the side frame  8  of the frame body  2  and contacted with the floor through the frame body  2  as known to the persons skilled in the art. 
         [0067]    The filtering bag  88  is suspended above the suction device  4  by the suspension rod  90  which is composed of the straight rod  92  and the bent rod  94 . 
         [0068]    Initiating the switch  80 , airflow is generated by the rapid rotation of the suction fan which is driven by the motor  80  to draw the dust and the other wastes into the suction device  4  via the dust inlet  76 . The air is finally released to the atmosphere via the filtering bag  88 , while the dust and other wastes are deposited in the dust collecting bag  89 . 
         [0069]    If the user wants to maintain the suction device  4 , as shown in  FIG. 5 , the filtering bag  88  and the dust collecting bag  89  will be taken out, then the suspension rod  90  is detached from the suction device  4 . Then the straight rod  92  is detached apart from the bent rod  94 , so that they can be respectively stored in the projecting blocks  35  of the side blocks  38 (as shown in  FIG. 7 ). 
         [0070]    Because the protrusion  64  of the second link  56  is engaged with the recess  63  of the first link  54 , the user needs to only pull the first link  54  or the second link  56  to rotate the second link  56  in a counter-clockwise direction (E direction as shown in  FIG. 5 ), whilst the joint member  52  is rotatable in a counter-clockwise direction relative to the connecting members  29 . As shown in  FIG. 7 , the suction device  4  is pivotable in a counter-clockwise direction relative to the frame body  2  without other fixing mechanism being released. 
         [0071]    The suction device  4  is rotatable in a counter-clockwise direction relative to the frame body  2  to reach a position that the suction device  4  is parallel to the first side surface  18 . As shown in  FIG. 8 , the suction device  4  is received in the containing cavity  22  and in the inner box  32 . The second link  56  is received in the groove  39  of the side block  38 . 
         [0072]    The hook  48  is pivoted to disengage with the slot  46 . As shown in  FIG. 8 , the support block  44  is pivotable relative to the inner box  32 . 
         [0073]    When the support block  44  rotates to a position that the support block  44  is parallel to the first side surface  18 , as shown in  FIG. 9 , the support block  44  is in a storage position where the support block  44  is used to cover the suction device  4  for certain protection. 
         [0074]    As shown in  FIG. 10 , the frame body  2  is inclined to the floor, thereby the wheels  15  and the curved connection of the second connecting rod  12  with the connecting rod  14  contact the floor to support the industrial dust collector  1  together. This allows the package of the industrial dust collector is reduced. It permits many industrial dust collectors to be regularly stored or transported. So that the storage space can be saved and it is convenient to transport. The transportation cost is reduced. Of course, as known to the person skilled in the art, the industrial dust collector  1  can be supported by the side frame  8  of the frame body  2  contacted with the floor familiar to those persons in the art. 
         [0075]    It is convention the suction device  4  to convent from the containing status to the unlocking status. Pulling the suction device  4  to rotate in the clockwise direction to a position where the first link  54  and the second link  56  are lying in a line. As shown in  FIG. 4 , the first link  54  and the second link  56  are self-locked by engagement of the protrusion  64  with the recess  63 . The suction device  4  is stationary relative to the frame body  2  for increasing the stability of the industrial dust collector  1 . It is convenient that the suction device  4  is fixed, while another fixed mechanism need not to be employed. 
         [0076]    The industrial dust collector  1  has a transportation status, as shown in  FIG. 11 , to pull the handle  10 , the detent members  19  compress the spring and the detent members  19  is disengaged with the detent holes  23 , so that the handle  10  is rotatable around the pivot shaft  28 . As shown in  FIG. 12 , the handle  10  can rotate to reach a position the detent members  19  is engaged with the detent holes  23 , then the handle  10  is fixed relative to the frame body  2 . If the frame body  2  is inclined, as shown in  FIG. 13 , the wheels  15  will contacte the floor and the frame body  2  is inclined with respect to the floor so that the industrial dust collector  1  can be moved easily by pulling the handle  10 . 
         [0077]    The embodiment of the present invention described above is a preferable embodiment to be understood by those persons in the art. The embodiment is to be considered as merely an illustration of principles of the present invention. Other modifications can be made without departing from the spirit and scope of the invention.