Patent Publication Number: US-11039721-B2

Title: Cyclone unit

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application claims the benefit of priority to Japanese Patent Application No. 2017-231855, filed on Dec. 1, 2017, the entire contents of which are hereby incorporated by reference. 
     BACKGROUND 
     1. Technical Field 
     The present invention relates to a cyclone unit. 
     2. Description of the Background 
     A cleaner  101  is of a conventionally known type and is capable of executing dust collection by a cyclone unit  102  (i.e., pre-dust collection) even before dust collection by a cleaner body  110  thereof (i.e., pre-process) in order to inhibit degradation in suction force of the cleaner body  110  (see  FIG. 13 ). The cyclone unit  102  includes a cyclone unit body  140  and a dust box  190 . The cyclone unit body  140  separates dust and dirt from air sucked through a suction tool (nozzle head)  120  by cyclone action. The dust box  190  is assembled to the cyclone unit body  140  and collects the separated dust and dirt. The cyclone unit body  140 , disclosed in Japanese Patent No. 3102864 (hereinafter referred to as “Patent Literature 1”), includes a lower base  142 , an upper base  160  and a middle base  170  (see  FIGS. 14 and 15 ). The lower base  142  is coupled to the suction tool  120  side. The upper base  160  is assembled to the lower base  142 , and is coupled to the cleaner body  110  side. The middle base  170  is sandwiched between the lower base  142  and the upper base  160 . A core tube  180  having a meshed shape is mounted to the middle base  170  so as to be located inside the dust box  190 . With this configuration, the cyclone unit  102  can collect even lightweight dust and dirt (e.g., hair) that are inseparable by the cyclone action, and can be enhanced in dust collection performance. 
     BRIEF SUMMARY 
     In the art of Patent Literature 1, the core tube  180  is detached from the cyclone unit body  140  in order to enhance workability in maintenance of removing dust and dirt collected by the core tube  180 . At this time, it is bothersome to perform detachment of the middle base  170  sandwiched between the lower base  142  and the upper base  160 . 
     It is an object of the present invention to enhance workability in maintenance of a cyclone unit capable of enhancing dust collection performance. 
     A first aspect of the present embodiment is to provide a cyclone unit including: 
     a cyclone unit body including
         a lower base,   an upper base assembled to the lower base, and   a middle base sandwiched between the lower base and the upper base;       

     a dust box assembled to the cyclone unit body so as to collect dust and dirt; and 
     a core tube having a meshed shape, the core tube being assembled to the middle base so as to be located inside the dust box, the core tube being detachable from the middle base while the upper base is assembled to the lower base. 
     A second aspect of the present embodiment is to provide a cyclone unit including: 
     a cyclone unit body; 
     a dust box assembled to the cyclone unit body so as to collect dust and dirt; and 
     a core tube having a meshed shape, the core tube being assembled to the cyclone unit body so as to be located inside the dust box, the core tube being detachable from the cyclone unit body. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG. 1  is a perspective view of a handy cleaner according to an embodiment. 
         FIG. 2  is a perspective view of the handy cleaner equipped with a cyclone unit according to the embodiment. 
         FIG. 3  is an enlarged view of the cyclone unit. 
         FIG. 4  is an exploded view of the cyclone unit. 
         FIG. 5  is a cross-sectional view of  FIG. 3  taken along line a-a. 
         FIG. 6  is a cross-sectional view of  FIG. 3  taken along line b-b. 
         FIG. 7  is an enlarged view of a lock part R shown in  FIG. 6 . 
         FIG. 8  is a view of a cyclone unit body for which assemblage is ongoing. 
         FIG. 9  is a schematic plan view of the cyclone unit from which an upper base is detached and in which assembling a core tube to a middle base is ongoing. 
         FIG. 10  is a schematic plan view of the cyclone unit from which the upper base is detached and in which assembling the core tube to the middle base is completed. 
         FIG. 11  is a view of the cyclone unit body for which assemblage is completed. 
         FIG. 12  is a diagram explaining airflow and dust-and-dirt flow in the cyclone unit according to the embodiment. 
         FIG. 13  is a perspective view of a conventional cleaner. 
         FIG. 14  is an enlarged view of a conventional cyclone unit. 
         FIG. 15  is an exploded view of the conventional cyclone unit. 
     
    
    
     DETAILED DESCRIPTION 
     An embodiment of the present invention will be hereinafter explained with  FIGS. 1 to 12 . It should be noted that in the following explanation, “a handy cleaner  1 ” will be explained as an example of “a cleaner”. Additionally in the following explanation, the terms “up”, “down”, “front”, “rear”, “right” and “left” indicate up, down, front, rear, right and left directions described in the aforementioned  FIGS. 1 and 2 , in other words, up, down, front, rear, right and left directions defined with reference to the handy cleaner  1 . First of all, the handy cleaner  1  and a cyclone unit  2  attachable to the handy cleaner  1  will be separately explained. 
     First, the handy cleaner  1  will be explained with reference to  FIG. 1 . The handy cleaner  1  includes a cleaner body  10 , a nozzle head  20  and an extension pipe (coupling tube)  30 . The cleaner body  10  generates a suction force by rotation of a suction fan (not shown in the drawings) for which an electric motor (not shown in the drawings) functions as a drive source. The nozzle head  20  sucks air by the suction force from the cleaner body  10 . The extension pipe  30  couples the cleaner body  10  and the nozzle head  20  therethrough. 
     The cleaner body  10  includes a dust collection compartment (not shown in the drawings) including a filter (not shown in the drawings) in a front-side part of the interior thereof. Additionally, the cleaner body  10  includes the aforementioned electric motor and suction fan in a rear-side part of the interior thereof. The cleaner body  10  includes a connection nozzle  12  on the front side thereof. A rear end  34  of the extension pipe  30  is inserted into a front end  12   a  of the connection nozzle  12 . 
     The cleaner body  10  includes a handle  14  having a looped shape on the upper side thereof. The handle  14  includes a switch  14   a  capable of turning on and off the electric motor. When a turn-on operation is performed by the switch  14   a , the electric motor is driven whereby the suction fan is rotated. Accordingly, air A is sucked through the connection nozzle  12 , and then, dust and dirt D contained in the sucked air A can be collected (trapped) by the filter in the dust collection compartment. When a turn-off operation is performed for the switch  14   a , the electric motor is stopped whereby rotation of the suction fan is also stopped. Accordingly, suction of the air A through the connection nozzle  12  is stopped as well. 
     The cleaner body  10  includes a battery attachment part  16  on the rear side thereof. A rechargeable battery  18 , functioning as a power source of the electric motor, is attached to the battery attachment part  16 . The battery  18  is slidable in the back-and-forth direction with respect to the battery attachment part  16 . When slid in an approaching direction to the cleaner body  10  with respect to the battery attachment part  16 , the battery  18  is locked to the battery attachment part  16 . 
     Accordingly, the battery  18  is attached to the battery attachment part  16 . On the other hand, when an unlock button (not shown in the drawings) is operated to release locking, the battery  18  is released from the locked state. Then, when slid in a separating direction from the cleaner body  10  with respect to the battery attachment part  16 , the battery  18  is made detachable from the battery attachment part  16 . 
     The nozzle head  20  includes a head housing  22  and a connection pipe  24 . The head housing  22  includes a suction port  22   a  through which air can be sucked. The connection pipe  24  is coupled to the head housing  22  through a ball joint mechanism (not shown in the drawings). Because of this, the head housing  22  is pivotable up and down and right and left with respect to the connection pipe  24 . A front end  32  of the extension pipe  30  is inserted into a rear end  24   a  of the connection pipe  24 . 
     In the handy cleaner  1 , the suction port  22   a  of the head housing  22 , the connection pipe  24 , the extension pipe  30  and the connection nozzle  12  are communicated with each other. Therefore, when the electric motor is driven whereby the suction fan is rotated, the air A is sucked through the suction port  22   a  of the head housing  22 , and then, the dust and dirt D contained in the sucked air A can be collected by the filter in the dust collection compartment. When the turn-off operation is performed for the switch  14   a , the electric motor is stopped whereby rotation of the suction fan is also stopped. Accordingly, suction of the air A through the suction port  22   a  of the head housing  22  is stopped as well. 
     Next, the cyclone unit  2  will be explained with reference to  FIGS. 3 to 11 . As shown in  FIG. 3 , the cyclone unit  2  includes a cyclone unit body  40  and a dust box  90 . The cyclone unit body  40  separates the dust and dirt D from the air A sucked through the suction port  22   a  of the head housing  22  by cyclone action. The dust box  90  is assembled to the cyclone unit body  40 , and collects the separated dust and dirt D. 
     As shown in  FIG. 4 , the cyclone unit body  40  includes a lower base  42 , an upper base  60  and a middle base  70 . The lower base  42  is coupled to the rear end  34  of the extension pipe  30 . The upper base  60  is assembled to the lower base  42 , and is coupled to the connection nozzle  12 . The middle base  70  is sandwiched between the lower base  42  and the upper base  60 . 
     The lower base  42  will be herein explained in detail. As shown in  FIGS. 4 and 5 , the lower base  42  includes a suction pipe  44  into which the rear end  34  of the extension pipe  30  is insertable. The axis of the suction pipe  44  is eccentric with respect to an axis B of the cyclone unit  2 . The lower base  42  includes a rib  46  on an inner surface  42   a  thereof. Additionally, the lower base  42  includes an air inflow part  48  in the interior thereof. The interior of the suction pipe  44  and the air inflow part  48  are communicated with each other. 
     The rib  46  causes the air A, sucked through the suction pipe  44 , to cause the cyclone action. The lower base  42  includes a pair of bosses  50  on an outer surface  42   b  thereof. Each boss  50  includes a screw hole  50   a  that enables a screw  68  to penetrate therethrough. As shown in  FIG. 6 , the lower base  42  includes a pair of hooked tabs  52  on the outer surface  42   b  thereof. The pair of hooked tabs  52  enables hooks  92   a  of a pair of engaging pawls  92  of the dust box  90  (to be described) to be hooked thereon. As shown in  FIG. 7 , each hooked tab  52  includes a slope  52   a  on the tip thereof. 
     The lower base  42  includes a pair of protection tabs  54  on the outer surface  42   b  thereof. Each protection tab  54  protects each engaging pawl  92 , while the hook  92   a  of each engaging pawl  92  is hooked on each hooked tab  52 . A packing  56  having a ring shape is assembled to the outer surface  42   b  of the lower base  42 . Accordingly, when the dust box  90  is assembled to the cyclone unit body  40  (the lower base  42 ), sealing performance is enhanced at the assembled site. 
     Next, the upper base  60  will be explained in detail. As shown in  FIGS. 4 to 6 , the upper base  60  includes a discharge pipe  62  that is insertable into the front end  12   a  of the connection nozzle  12 . The axis of the discharge pipe  62  is eccentric with respect to the axis B. The upper base  60  includes an air discharge part  64 . The interior of the discharge pipe  62  and the air discharge part  64  are communicated with each other. The upper base  60  includes a pair of bosses  66  on an outer surface  60   b  thereof. Each boss  66  includes a screw hole (not shown in the drawings) that enables each screw  68  to be screwed therein. The pair of bosses  66  and the pair of bosses  50  of the lower base  42  are disposed in corresponding positions. 
     Next, the middle base  70  will be explained in detail. As shown in  FIGS. 4 to 6 , the middle base  70  partitions the air inflow part  48  of the lower base  42  and the air discharge part  64  of the upper base  60  therethrough. The middle base  70  includes a vertical wall  70   b  on the edge thereof. The vertical wall  70   b  includes a hook portion  70   a  capable of being hooked on an inner peripheral edge  42   c  of the lower base  42 . The middle base  70  includes a through hole  72 . The center of the through hole  72  is matched with the axis B. The middle base  70  includes an inner tube  72   a  on a back surface  70   c  (the lower base  42 -side surface) thereof. The inner tube  72   a  has a larger diameter than the through hole  72  and is located about the axis B. 
     As shown in  FIG. 4 , the through hole  72  includes an opposed pair of cutout portions  74  on the edge thereof. Additionally, as shown in  FIG. 9 , the through hole  72  includes an opposed pair of hooked portions  76  on the edge thereof. Each of the pair of hooked portions  76  is disposed adjacently to each of the pair of cutout portions  74 . The middle base  70  includes a pair of outer walls  78  on the front surface (the upper base  60 -side surface) thereof. Each outer wall  78  guards each adjacent pair of the cutout portion  74  and the hooked portion  76  from the outer side. Each outer wall  78  includes a protrusion  78   b  on an inner surface  78   a  thereof such that the protrusion  78   b  is opposed to each hooked portion  76 . 
     A core tube  80  is attachable to and detachable from the middle base  70 . As shown in  FIGS. 4 to 6 , the core tube  80  is a tube member having a meshed shape, and includes a closed end  80   b  on a distal end  80   a  side thereof and includes an opened end on a base end  80   c  side thereof. The core tube  80  includes a plurality of minute holes  82  in an outer peripheral surface  80   d  thereof. The core tube  80  includes an opposed pair of restriction tabs  84  on the base end  80   c  thereof. The pair of restriction tabs  84  interferes with the edge of the through hole  72  of the middle base  70 . Accordingly, when assembled to the through hole  72  of the middle base  70 , the core tube  80  can be prevented from penetrating the through hole  72  (see  FIG. 5 ). 
     The core tube  80  includes an opposed pair of hook tabs  86  on the base end  80   c  thereof. The pair of hook tabs  86  is insertable into the pair of cutout portions  74  of the middle base  70  (see  FIG. 4 ). The pair of restriction tabs  84  and the pair of hook tabs  86  are disposed on the base end  80   c  of the core tube  80  at suitably set equal intervals in the circumferential direction so as not to overlap each other. Each hook tab  86  includes a cutout  86   a  on the outer periphery thereof. The cutout  86   a  enables the protrusion  78   b  on each outer wall  78  of the middle base  70  to be fitted thereto. 
     An example of a procedure to assemble the cyclone unit body  40  will be hereinafter explained. First, in the state shown in  FIG. 4 , the hook portion  70   a  of the middle base  70  is hooked on the inner peripheral edge  42   c  of the lower base  42 . Next, the upper base  60  is put on the lower base  42 . In other words, the middle base  70  is sandwiched between the lower base  42  and the upper base  60 . 
     Next, each screw  68  is inserted into the screw hole  50   a  of each boss  50 , and the inserted screw  68  is screwed into the screw hole of each boss  66 . Thus, the both screws  68  are inserted into the both bosses  50  of the lower base  42  and the both bosses  66  of the upper base  60  (see  FIG. 8 ). Next, the pair of hook tabs  86  of the core tube  80  is matched with the pair of cutout portions  74  of the middle base  70 , and in this state, the core tube  80  is inserted into the through hole  72  of the middle base  70  until the pair of restriction tabs  84  of the core tube  80  interferes with the back surface  70   c  of the middle base  70  (see  FIG. 9 ). 
     Next, the inserted core tube  80  is rotated (in the counterclockwise direction in  FIG. 9 ) about the axis thereof (see  FIG. 9 ). Accordingly, the pair of hook tabs  86  of the core tube  80  overlaps the pair of hooked portions  76  of the middle base  70 , whereby the core tube  80  is prevented from coming off from the middle base  70  even in attempt to pull the core tube  80  away from the middle base  70 . 
     Then, the protrusions  78   b  of the pair of outer walls  78  of the middle base  70  are engaged with the cutouts  86   a  of the pair of hook tabs  86  of the rotated core tube  80 , respectively (see  FIG. 10 ). Thus, the core tube  80  is assembled to the middle base  70 , and assemblage of the cyclone unit body  40  is completed (see  FIG. 11 ). It should be noted that the core tube  80  assembled to the middle base  70  is capable of being disassembled therefrom by reversely performing the series of work. Simply put, when the core tube  80  is reversely rotated about the axis thereof with respect to the middle base  70  in this engaged state, the engaged state is released whereby the core tube  80  assembled to the middle base  70  is capable of being disassembled therefrom. 
     As shown in  FIGS. 4 to 7 , the dust box  90  is a closed-end tube member that the distal end side thereof is tapered. The dust box  90  includes the pair of engaging pawls  92  on an outer peripheral surface  90   a  thereof. Each engaging pawl  92  includes the hook  92   a  capable of being hooked on each hooked tab  52  of the lower base  42 . Each engaging pawl  92  is rotatable about the axis of a pin  94  through a compression spring  96 . Each engaging pawl  92  and each hooked tab  52  compose a lock part R. A direction in which each engaging pawl  92  is urged by the compression spring  96  is a direction in which the hook  92   a  of each engaging pawl  92  is hooked on each hooked tab  52  (in the counterclockwise direction in  FIG. 7 ). 
     The hook  92   a  includes a slope  92   b  on the tip thereof. The slope  92   b  is opposed to the slope  52   a  of each hooked tab  52 . It should be noted that each engaging pawl  92  is kept interfering with a flange  90   b  of the dust box  90  such that the slope  92   b  of the hook  92   a  thereof and the slope  52   a  of each hooked tab  52  are kept standby in inserting the distal end of the lower base  42  into the base end of the dust box  90  as described below. 
     The dust box  90  is capable of being assembled to the cyclone unit body  40 . The procedure of this assemblage will be herein explained. First, the distal end of the lower base  42  is inserted into the base end of the dust box  90  in the state shown in  FIG. 8 . Accordingly, the slope  52   a  of each hooked tab  52  and the slope  92   b  of each engaging pawl  92  interfere with each other. 
     Because of this, each engaging pawl  92  is rotated about the axis of each pin  94  against the biasing force of each compression spring  96 . By further inserting the distal end of the lower base  42  into the base end of the dust box  90 , the hook  92   a  of each engaging pawl  92  rotated about the axis of each pin  94  gets over each hooked tab  52 . Accordingly, the biasing force of each compression spring  96  returns each engaging pawl  92  to the state that each engaging pawl  92  interferes with the flange  90   b , and also, the hook  92   a  of each engaging pawl  92  is hooked on each hooked tab  52  (see  FIG. 7 ). 
     Consequently, each lock part R becomes locked, and the dust box  90  is assembled to the cyclone unit body  40  (see  FIG. 3 ). In this way, the cyclone unit  2  is completed. As is obvious from  FIG. 3  as well, the core tube  80  of the cyclone unit  2  is assembled to the middle base  70  so as to be located inside the dust box  90 . 
     It should be noted that the hook  92   a  of each engaging pawl  92 , hooked on each hooked tab  52 , is released by inwardly pushing the base end side (the side opposite to the hook  92   a ) of each engaging pawl  92  against the biasing force of each compression spring  96  (by setting each engaging pawl  92  to a state depicted with imaginary line in  FIG. 7 ) in the locked state of each lock part R. Accordingly, each lock part R becomes unlocked, whereby the distal end of the lower base  42  inserted into the base end of the dust box  90  is capable of being pulled therefrom. In this way, the dust box  90  assembled to the cyclone unit body  40  is capable of being disassembled therefrom. 
     The cyclone unit  2  is attached to the handy cleaner  1  (see  FIGS. 2 and 5 ). Specifically, the rear end  34  of the extension pipe  30  is detached from the front end  12   a  of the connection nozzle  12 . Then, the rear end  34  of the extension pipe  30  is inserted into the suction pipe  44  of the lower base  42 , and furthermore, the discharge pipe  62  of the upper base  60  is inserted into the front end  12   a  of the connection nozzle  12 . 
     Next, the action of the handy cleaner  1  equipped with the cyclone unit  2  will be explained with reference to  FIG. 12 . When the turn-on operation is performed by the switch  14   a , the electric motor is driven whereby the suction fan is rotated. Accordingly, the air A is sucked through the suction port  22   a  of the head housing  22 , and the sucked air A is taken into the air inflow part  48  of the lower base  42  through the extension pipe  30  and the suction pipe  44 . 
     Because of the rib  46 , the taken air A flows in the form of swirl (vortex) along the inner surface  42   a  of the lower base  42 . At this time, the dust and dirt D, contained in the air A, are separated from the air A by centrifugal force, go down along the inner peripheral surface of the dust box  90  by the weight thereof, and is collected in the dust box  90 . In this way, the dust and dirt D are separated from the taken air A by the cyclone action. 
     The air A, from which the dust and dirt D are separated, passes through the minute holes  82  of the core tube  80 , and is discharged to the connection nozzle  12  through the air discharge part  64  and the discharge pipe  62  in the upper base  60 . At this time, because of passage of the air A through the minute holes  82  of the core tube  80 , it is possible to collect even lightweight dust and dirt (e.g., hair) that are inseparable by the cyclone action. Thus, the cyclone unit  2  can be enhanced in dust collection performance. 
     The air A, discharged to the connection nozzle  12 , is sucked therethrough. Because of this, even when the dust and dirt D remain in the sucked air A, the remaining dust and dirt D can be collected by the filter in the dust collection compartment of the cleaner body  10 . 
     When the turn-off operation is performed for the switch  14   a , the electric motor is stopped whereby rotation of the suction fan is also stopped. Accordingly, suction of the air A through the suction port  22   a  of the head housing  22  is stopped as well. 
     The dust and dirt D, collected inside the dust box  90 , can be removed by detaching the dust box  90  from the cyclone unit body  40  while suction of the air A is being stopped. Additionally, even when the upper base  60  is kept assembled to the lower base  42 , the core tube  80  is capable of being assembled to and disassembled from the middle base  70 . In other words, the core tube  80  is attachable to and detachable from the middle base  70  while the upper base  60  is kept assembled to the lower base  42 . 
     The cyclone unit  2  according to the present embodiment includes the meshed core tube  80 , and hence, can collect even lightweight dust and dirt (e.g., hair) that are inseparable by the cyclone action. Because of this, the cyclone unit  2  can be enhanced in dust collection performance. Additionally, even when the upper base  60  is kept assembled to the lower base  42 , the core tube  80  is configured to be attachable to and detachable from the middle base  70 . Because of this, the core tube  80  is detachable from the cyclone unit body  40  without detaching the middle base  70  sandwiched between the lower base  42  and the upper base  60 . Consequently, hair, tiny trash and so forth, clogging up the minute holes  82 , can be removed from the detached core tube  80 . Hence, the core tube  80  can be enhanced in workability in maintenance. Especially, some upper ones of the minute holes  82  are inserted into a lower part of the inner tube  72   a , which is indicated as “inserted site C” in  FIG. 5 . Hence, this removal work is made quite easy. 
     Additionally, the core tube  80  is capable of being assembled to the middle base  70  by rotation thereof. Therefore, this assemblage can be made easy and convenient. 
     Moreover, the pair of hook tabs  86  of the core tube  80  overlap the pair of hooked portions  76  of the middle base  70  by rotation of the core tube  80  inserted into the through hole  72 . Therefore, this assemblage can be made easy and convenient. 
     Furthermore, the protrusions  78   b  of the pair of outer walls  78  of the middle base  70  are engaged with the cutouts  86   a  of the pair of hook tabs  86  of the core tube  80 , respectively. This makes it as difficult as possible for the core tube  80  to come off from the middle base  70 . 
     Yet furthermore, the pair of hook tabs  86  and the pair of hooked portions  76  are disengaged from each other by reverse rotation of the core tube  80 . Because of this, the core tube  80  assembled to the middle base  70  can be disassembled therefrom easily and conveniently. 
     The aforementioned content only relates to an illustrative embodiment of the present invention, and it should not be construed that the present invention is limited to the aforementioned content. 
     In the embodiment, “the hand cleaner  1 ” has been explained as an example of “the cleaner”. However, “the cleaner” is not limited to this, and may be “a home use cleaner” as shown in  FIG. 13 . 
     Additionally, the cyclone unit body  40  according to the embodiment is composed of three members, i.e., the lower base  42 , the upper base  60  and the middle base  70 , and the core tube  80  is attachable to and detachable from the middle base  70 . However, the construction of the cyclone unit body  40  is not limited to this. The cyclone unit body  40  may be composed of an arbitrary number of components (modifications). For example, the cyclone unit body  40  may be composed of a single member, and the core tube  80  may be attachable to and detachable from the cyclone unit body  40 . Alternatively, the cyclone unit body  40  may be composed of two members, and the core tube  80  may be attachable to and detachable from either of the two members composing the cyclone unit body  40 . Even in the modifications, it is possible to achieve advantageous effects similar to those achieved by the cyclone unit  2  of the embodiment. 
     REFERENCE SIGNS LIST 
     
         
           1  Handy cleaner 
           2  Cyclone unit 
           10  Cleaner body 
           12  Connection nozzle 
           12   a  Front end 
           14  Handle 
           14   a  Switch 
           16  Battery attachment part 
           18  Battery 
           20  Nozzle head 
           22  Head housing 
           22   a  Suction port 
           24  Connection pipe 
           24   a  Rear end 
           30  Extension pipe 
           32  Front end 
           34  Rear end 
           40  Cyclone unit body 
           42  Lower base 
           42   a  Inner surface 
           42   b  Outer surface 
           42   c  Edge 
           44  Suction pipe 
           46  Rib 
           48  Air inflow part 
           50  Boss 
           50   a  Screw hole 
           52  Hooked tab 
           52   a  Slope 
           54  Protection tab 
           56  Packing 
           60  Upper base 
           60   b  Outer surface 
           62  Discharge pipe 
           64  Air discharge part 
           66  Boss 
           68  Screw 
           70  Middle base 
           70   a  Hook portion 
           70   b  Vertical wall 
           70   c  Back surface 
           72  Through hole 
           72   a  Inner tube 
           74  Cutout portion 
           76  Hooked portion 
           78  Outer wall 
           78   a  Inner surface 
           78   b  Protrusion 
           80  Core tube 
           80   a  Distal end 
           80   b  Closed end 
           80   c  Base end 
           80   d  Outer peripheral surface 
           82  Minute holes 
           84  Restriction tab 
           86  Hook tab 
           86   a  Cutout 
           90  Dust box 
           90   a  Outer peripheral surface 
           90   b  Flange 
           92  Engaging pawl 
           92   a  Hook 
           92   b  Slope 
           94  Pin 
           96  Compression spring 
           101  Cleaner 
           102  Cyclone unit 
           110  Cleaner body 
           120  Suction tool 
           140  Cyclone unit body 
           142  Lower base 
           160  Upper base 
           170  Middle base 
           180  Core tube 
           190  Dust box 
         A Air 
         B Axis 
         C Inserted site 
         D Dust and dirt 
         R Lock part