JP7128048B2 - portable dust collector - Google Patents

Description

TECHNICAL FIELD The present invention relates to a portable dust collector, and more particularly to a portable dust collector comprising a body housing and a filter attachable to the body housing.

Conventionally, portable dust collectors called handy cleaners have already been known. Such a portable dust collector mainly accommodates a body housing, a filter that can be mounted (mounted and removed) by inserting it into the mounting rib of the body housing, and a filter that is mounted (exterior) on the mounting rib of the body housing. and a front housing that can be attached to the body housing in a state. Then, when the fan rotated by the drive of the motor housed in the body housing draws air containing dust, the sucked air passes through the filter. Therefore, dust contained in the sucked air can be captured by the filter.

Here, in Japanese Unexamined Patent Application Publication No. 2002-100000, a lock mechanism is constructed of a pair of stoppers 121 formed on a main body housing 110 and a pair of hooking ribs 163 formed on a filter 160 so as to overlap the pair of stoppers 121. A portable dust collector 101 with 180 is disclosed (see FIG. 15). As a result, when the filter 160 mounted on the mounting ribs 118 of the body housing 110 is rotated, the pair of hooking ribs 163 of the filter 160 can be hooked on the pair of stoppers 121 of the body housing 110, that is, the lock mechanism 180 is activated. can be activated. Therefore, it is possible to prevent the filter 160 attached to the attachment ribs 118 of the main body housing 110 from falling off inside the front housing 170 (reserving portion capable of storing dust).

JP 2015-195881 A

However, with the technique of Patent Document 1 described above, even when the pair of stoppers 121 and the pair of hooking ribs 163 overlap each other, the filter 160 can be mounted by inserting it into the mounting ribs 118 of the main body housing 110 (FIG. 16). reference). Therefore, the filter 160 may be inserted into the mounting rib 118 of the main body housing 110 in a state in which it cannot be prevented from falling inside the front housing 170 (a state in which the lock mechanism 180 cannot be operated). In other words, the filter 160 may be erroneously assembled to the body housing 110 . If the filter 160 is erroneously assembled in this way, the use posture of the portable dust collector 101 in the use state (the state in which the fan 113 is sucking dust-laden air) is the forward-down posture. There was a case where it dropped (detached) from the housing 110 due to its own weight (see FIG. 17). Therefore, part of the sucked air may be directly taken into the fan without passing through the filter 160 .

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a portable dust collector that can prevent erroneous attachment of the filter to the main body housing.

According to one aspect of the present disclosure, a portable dust collector includes a body housing, a filter attachable to the body housing, and a front housing attachable to the body housing . The inner surface of the front housing is formed with fall-off prevention ribs capable of restricting the movement of the filter that has been incorrectly assembled to the main body housing.

Therefore , the state is the same as the state in which the filter can be prevented from falling off inside the front housing. That is, it is possible to obtain the same effect as the state in which the filter is attached. Therefore, even if there is an error such as forgetting to rotate the filter, it is possible to prevent the filter inserted in the body housing from coming off. As a result, erroneous assembly of the filter to the body housing can be prevented.

According to another feature of the present disclosure, the anti-drop ribs are generally L-shaped.

Therefore , the drop-off prevention rib can be strengthened.

According to another feature of the present disclosure, a portable dust collector includes a body housing, a filter attachable to the body housing, and a locking mechanism that prevents the filter from falling off . The locking mechanism is composed of a stopper formed on the body housing and a hooking rib formed on the filter. By rotating the filter so that the hooking rib overlaps the stopper, it is possible to prevent the filter from falling out of the body housing. The main body housing is formed with erroneous attachment prevention ribs that prevent the filter from being attached to the main body housing in a state in which the hooking ribs overlap the stopper in the axial direction.

Therefore , when the filter is attached to the body housing, if the hooking ribs of the filter overlap the stoppers of the body housing, the hooking ribs of the filter interfere with the erroneous attachment prevention ribs of the body housing. Therefore, this filter cannot be attached to the body housing. Therefore, it is possible to make the operator aware that an error has occurred in attaching the filter. As a result, erroneous assembly of the filter to the body housing can be prevented.

According to another feature of the present disclosure, a plurality of erroneous mounting prevention ribs are formed at appropriate intervals along the width direction.

Therefore , the hooking ribs of the filter do not fail to interfere with the erroneous attachment prevention ribs. Therefore, erroneous attachment of the filter to the body housing can be reliably prevented.

According to another feature of the present disclosure, a locking mechanism is provided to prevent the filter from falling out. The locking mechanism is composed of a stopper formed on the body housing and a hooking rib formed on the filter. This portable dust collector can prevent the filter from falling out of the body housing by rotating the filter so that the hooking rib overlaps the stopper. The main body housing is formed with erroneous attachment prevention ribs that prevent the filter from being attached to the main body housing in a state in which the hooking ribs overlap the stoppers in the axial direction.

Therefore , it is possible to obtain the same effects as the portable dust collector according to one feature of the present disclosure described above and the portable dust collector according to the other feature of the present disclosure described above .

It is a right view of the portable dust collector which concerns on embodiment of this invention. FIG. 1 shows a state in which a part of the front housing is cut away. FIG. 2 is a longitudinal sectional view of FIG. 1; 2 is an enlarged view of the front housing of FIG. 1; FIG. 5 is a perspective view of the front housing of FIG. 4 as seen from the rear side; FIG. 4 is a rear perspective view of the filter of FIG. 3; FIG. It is a figure explaining the procedure of insertion of the filter with respect to a main body housing. It is a figure explaining the next procedure of FIG. 7, and is the state where attachment of the filter was completed. FIG. 8 is a diagram showing a first error state in the insertion procedure of FIG. 7; FIG. 10 is a perspective view of FIG. 9; FIG. 10 is a right side view for explaining attachment of the front housing in the first erroneous state of FIG. 9, showing a state in which part of the front housing is cut away; FIG. 12 is a longitudinal sectional view of FIG. 11; Fig. 8 shows a third error state of the filter in the insertion procedure of Fig. 7; FIG. 14 is a vertical cross-sectional view illustrating attachment of the front housing in the third erroneous state of FIG. 13; 1 is a longitudinal sectional view of a conventional portable dust collector; FIG. FIG. 16 is a diagram showing a state of erroneous assembly of the filter in FIG. 15; FIG. 16 is a diagram (a diagram for explaining a problem) showing a usage posture of the portable dust collector in a state in which the filter of FIG. 15 is incorrectly assembled.

Embodiments of the present invention will be described with reference to FIGS. 1 to 14. FIG. This portable dust collector 1 is called a handy cleaner, and mainly houses a main body housing 10, a filter device 30 attachable to the main body housing 10, and a filter device 30 attached to the main body housing 10. It has a front housing 70 that can be attached to the body housing 10 and a lock mechanism 80 that prevents the filter device 30 attached to the body housing 10 from coming off (see FIGS. 1 to 3).

The body housing 10, the filter device 30, and the front housing 70 will be individually described below. It is customary for this portable dust collector 1 to refer to the right side in FIG. 1 as the front side and the left side as the rear side. Therefore, in the following description, the forward and backward directions are used according to this convention unless otherwise specified. The vertical and horizontal directions are based on the forward and backward directions.

First, the body housing 10 will be described. The body housing 10 is configured to form the rear side of the outer shell of the portable dust collector 1 (see FIGS. 1 and 2). A motor 11 and a fan 13 attached to a drive shaft 12 of the motor 11 are accommodated in the body housing 10 (see FIG. 3). A loop-shaped handle 14 that can be gripped by an operator's hand (none of which is shown) is formed on the rear upper side of the body housing 10 . The handle 14 is provided with an operation button 15 that can be turned on and off with the fingers of the hand gripping the handle 14 .

A through hole 17 communicating with an opening 72 of a front housing 70 to be described later is formed in the front side of the body housing 10 . A cylindrical mounting rib 18 is formed on the outer circumference of the through hole 17 so as to protrude forward. A mounting portion 19 having a pair of spiral grooves 20 on the outer peripheral surface is formed in the front edge of the body housing 10 along the circumferential direction (see FIG. 7). A pair of stoppers 21 are formed on the upper and lower sides of the inner peripheral surface of the mounting portion 19 . A pair of erroneous mounting prevention ribs 22 are formed on the front upper side and the front lower side of the inner peripheral surface of the mounting portion 19 so as to overlap the pair of stoppers 21 in the axial direction. A plurality of the erroneous mounting prevention ribs 22 are formed at appropriate intervals along the left-right direction.

A plurality of slit-shaped exhaust ports 23 are formed on the left and right sides of the body housing 10 . Further, the rear lower side of the body housing 10 is formed so as to form a recess. A battery mounting portion 25 is formed in this recess so that the battery 26 can be mounted from the rear side toward the front side. A strap 27 is hooked on the rear side of the body housing 10 . As a result, the portable dust collector 1 can be stored by hooking it on a hook (none of which is shown) attached to the wall.

The body housing 10 is configured in this manner. The body housing 10 constructed in this way is composed of resin-made half-split housings 10a and 10b, which are divided into left and right. The half housings 10a and 10b are fastened at appropriate locations with a plurality of screws 10c (partially not shown) so that they form a main body housing 10 when assembled together.

Next, the filter device 30 will be explained. The filter device 30 is composed of a frame 40, a cloth filter 50, and a filter 60 (see FIGS. 3 and 6). The frame 40 is composed of a substantially cylindrical resin member in which a ring member 41 formed on the front side has a smaller diameter than a ring member 42 formed on the rear side. The frame 40 constructed in this manner has a pair of engagement holes (not shown) formed in the ring member 42 formed on the rear side thereof and formed in the mounting rib 18 of the main body housing 10 . It is attached to the attachment rib 18 of the main body housing 10 by engaging with the engaging claw.

The cloth filter 50 is made of a bag-like cloth member having an opening 51 along (covering) the inside of the filter 60, which will be described later. The cloth filter 50 configured in this way is configured so as to follow the inside of the filter 60 described later (so that the opening 51 of the cloth filter 50 and the opening 62 of the filter 60 are matched to cover the inside). 60 is housed inside. Further, the fabric filter 50 is formed to have air permeability through which air can pass. Therefore, dust contained in this air can be captured by the cloth filter 50 .

Moreover, the filter 60 is made of a resin member including a substantially cylindrical skeleton 61 . The filter 60 is formed in a mesh shape (not shown) so that air can pass through all surfaces except for an opening 62 formed on the rear side. Therefore, dust contained in this air can be captured by the filter 60 . A pair of hooking ribs 63 are formed above and below the opening 62 of the filter 60 .

The filter 60 constructed in this manner is positioned so that the pair of hooking ribs 63 do not overlap the pair of stoppers 21 of the main body housing 10 (see FIG. 7), and the opening 62 of the filter 60 is positioned on the main body. It is inserted into the mounting rib 18 of the housing 10 . The filter 60 into which the opening 62 is inserted is rotated so that the pair of hooking ribs 63 overlap the pair of stoppers 21 of the body housing 10 (see FIG. 8).

As a result, even if the filter 60 drops (disengages) from the mounting ribs 18 of the main body housing 10 due to its own weight, the pair of hooking ribs 63 of the filter 60 are caught by the pair of stoppers 21 of the main body housing 10. . That is, the lock mechanism 80 can be operated. Therefore, it is possible to prevent the filter 60 inserted into the mounting ribs 18 of the main body housing 10 from falling off in the later-described storing portion 73 of the front housing 70 .

The insertion of the filter 60 that is prevented from coming off in this manner is referred to as "mounting of the filter 60". On the other hand, simply inserting the filter 60 without preventing it from coming off is referred to as "wrong assembly of the filter 60". The filter device 30 is composed of the frame 40 , the fabric filter 50 and the filter 60 . The pair of stoppers 21 of the body housing 10 and the pair of hooking ribs 63 of the filter 60 of the filter device 30 described above correspond to the lock mechanism 80 .

Finally, the front housing 70 will be explained. The front housing 70 has a substantially bell-like shape forming the front side of the outer shell of the portable dust collector 1 (see FIGS. 1 to 2 and 4). The front side of the front housing 70 is provided with a nozzle-shaped suction port 71 capable of sucking air. An opening 72 communicating with the inside is formed on the rear side of the front housing 70 (see FIG. 5).

Further, the inside of the front housing 70 serves as a storage section 73 capable of storing dust captured by the filter 60 of the filter device 30 described above. A pair of substantially L-shaped drop-off prevention ribs 74 are formed on the front side of the inner peripheral surface of the front housing 70 . A pair of protrusions 75 that can be screwed into the pair of grooves 20 of the mounting portion 19 of the main body housing 10 are formed on the rear side of the inner peripheral surface of the front housing 70 . The front housing 70 is constructed in this way.

When the pair of protrusions 75 of the front housing 70 constructed in this way are guided into the pair of grooves 20 of the mounting portion 19 of the main body housing 10 and twisted to one side, the front housing 70 is attached to the main body housing 10 . 70 can be attached by a known bayonet connection. At this time, the pair of drop-off prevention ribs 74 of the attached front housing 70 restricts axial movement of the front side of the filter 60 of the filter device 30 (see FIGS. 2 and 3). Therefore, rattling of the filter device 30 attached to the body housing 10 can be suppressed.

The front housing 70 can be removed from the body housing 10 by twisting the pair of protrusions 75 of the attached front housing 70 to the other side. The portable dust collector 1 is composed of the body housing 10 , the filter device 30 , the front housing 70 and the lock mechanism 80 .

Next, the operation of the portable dust collector 1 described above will be described. First, the operation button 15 is turned on to drive the motor 11 with power from the battery 26 . Then, the drive shaft 12 of the motor 11 is driven to rotate the fan 13 , so air is sucked from the suction port 71 of the front housing 70 . The sucked air passes through the mesh of the filter 60 of the filter device 30 and the fabric filter 50, and passes through the opening 42a of the ring material 42 of the frame 40 of the filter device 30 and the through hole 17 of the main body housing 10 to the exhaust port. 23 is discharged.

Dust contained in the air sucked from the suction port 71 is captured by the mesh of the filter 60 and the cloth filter 50 of the filter device 30 due to the flow of air from suction to discharge. is stored in the storage unit 73 of . Therefore, dust contained in this air can be removed.

It should be noted that three errors (first to third errors) can occur in inserting the filter 60 into the mounting ribs 18 of the body housing 10 described above. These three possible errors and their countermeasures are separately described below.

First, the first error (first error) will be described. When the filter 60 is inserted into the mounting ribs 18 of the main body housing 10 as described above, if the pair of hooking ribs 63 of the filter 60 overlap the pair of stoppers 21 of the main body housing 10 (FIG. 9). ), the pair of hooking ribs 63 of the filter 60 interfere with the pair of erroneous mounting prevention ribs 22 of the body housing 10 . Therefore, the opening 62 of this filter 60 cannot be inserted into the mounting rib 18 of the body housing 10 .

This description is described in the scope of claims, "the body housing is formed with an erroneous attachment prevention rib that prevents the filter from being attached to the body housing in a state in which the hooking rib overlaps the stopper in the axial direction." Equivalent to "is being Therefore, it is possible to make the operator aware that an error (first error) has occurred in inserting the filter 60 . As a result, erroneous assembly of the filter 60 to the mounting ribs 18 of the body housing 10 can be prevented.

At this time, even if the filter 60 cannot be inserted into the mounting ribs 18 of the body housing 10, the filter 60 may be held by the frame 40 (see FIG. 10). That is, even in the first error state, the operator may erroneously recognize that the insertion of the filter 60 into the mounting rib 18 of the main body housing 10 has been completed. Even in that case, when the front housing 70 is attached to the body housing 10, the pair of drop-off prevention ribs 74 of the attached front housing 70 interfere with the front side of the filter 60 (see FIGS. 11 and 12).

Therefore, the front housing 70 for attachment cannot guide the pair of projections 75 to the pair of grooves 20 of the attachment portion 19 of the main body housing 10 . Therefore, it is possible to make the operator aware that an error (second error (second error)) has occurred in inserting the filter 60 . As a result, erroneous assembly of the filter 60 to the mounting ribs 18 of the body housing 10 can be prevented.

Finally, the third error (third error) will be explained. When inserting the filter 60 into the body housing 10 as described above, the user may forget to rotate the filter 60 inserted into the mounting rib 18 of the body housing 10 . In this case, the inserted filter 60 is in an erroneously assembled state (a state in which the lock mechanism 80 cannot be operated) in which it cannot be prevented from falling off inside the front housing 70 (see FIG. 13).

Even in this state, when the front housing 70 is attached to the main body housing 10, the pair of drop-off prevention ribs 74 of the attached front housing 70 restricts the front axial movement of the filter 60 of the filter device 30 (see FIG. 14). ). Therefore, this state is the same as the state in which the inserted filter 60 can be prevented from falling off inside the front housing 70 (the state in which the lock mechanism 80 is activated). That is, it is possible to obtain the same effect as the state in which the filter 60 is attached. Therefore, even if the user forgets to rotate the filter 60 (third error), the filter 60 inserted into the main body housing 10 can be prevented from coming off. As a result, erroneous assembly of the filter 60 to the body housing 10 can be prevented.

The portable dust collector 1 according to the embodiment of the present invention is configured as described above. According to this configuration, a drop-off prevention rib 74 is formed on the front side of the inner peripheral surface of the front housing 70 . Even if the inserted filter 60 cannot be prevented from falling off inside the front housing 70, the drop-off prevention rib 74 prevents the front side of the filter 60 of the filter device 30 from falling off when the front housing 70 is attached to the main body housing 10 even in an erroneously assembled state. It is possible to regulate the movement in the axial direction of Therefore, this state is the same as the state in which the inserted filter 60 can be prevented from falling off inside the front housing 70 (the state in which the lock mechanism 80 is activated). That is, it is possible to obtain the same effect as the state in which the filter 60 is attached. Therefore, even if there is an error such as forgetting to rotate the filter 60, it is possible to prevent the filter 60 inserted into the main body housing 10 from coming off. As a result, erroneous assembly of the filter 60 to the body housing 10 can be prevented.

Further, according to this configuration, the drop-off prevention rib 74 is formed in a substantially L shape. Therefore, the fall prevention rib 74 can be made strong.

Further, according to this configuration, a pair of erroneous mounting prevention ribs 22 are formed on the front upper side and the front lower side of the inner peripheral surface of the mounting portion 19 so as to axially overlap the pair of stoppers 21 . there is Therefore, when the filter 60 is inserted into the mounting ribs 18 of the main body housing 10, if the pair of hooking ribs 63 of the filter 60 overlaps the pair of stoppers 21 of the main body housing 10, the main body housing 10 will not move. The pair of hooking ribs 63 of the filter 60 interferes with the pair of erroneous mounting prevention ribs 22 of the filter 60 . Therefore, the opening 62 of this filter 60 cannot be inserted into the mounting rib 18 of the body housing 10 . As a result, the operator can be made to notice that an error (first error) has occurred in inserting the filter 60 . That is, erroneous assembly of the filter 60 to the mounting ribs 18 of the body housing 10 can be prevented.

Further, according to this configuration, the erroneous mounting prevention ribs 22 are formed in plurality at proper intervals along the left-right direction. Therefore, the pair of hooking ribs 63 of the filter 60 will not fail to interfere with the erroneous mounting prevention ribs 22 . Therefore, erroneous attachment of the filter 60 to the mounting ribs 18 of the main body housing 10 can be reliably prevented.

Further, according to this configuration, the front side of the inner peripheral surface of the front housing 70 is formed with a drop-off prevention rib 74 . A pair of erroneous mounting prevention ribs 22 are formed on the front upper side and the front lower side of the inner peripheral surface of the mounting portion 19 so as to overlap the pair of stoppers 21 in the axial direction. Therefore, erroneous assembly of the filter 60 to the body housing 10 can be prevented as described above.

It should be noted that the portable dust collector 1 according to the embodiment of the present invention is not limited to the above-described embodiment, and may be configured by appropriately changing parts as follows. The stopper 21, the erroneous mounting prevention rib 22, and the hooking rib 63 are not limited to a pair (two pieces), and may be one piece, three pieces, or four pieces. In the case of a plurality (2, 3, 4), they may or may not be equally spaced in the circumferential direction.

1 portable dust collector 10 body housing 10a half housing 10b half housing 10c screw 11 motor 12 drive shaft 13 fan 14 handle 15 operation button 17 through hole 18 mounting rib 19 mounting portion 20 groove 21 stopper 22 erroneous mounting prevention rib 23 exhaust port 25 Battery mounting portion 26 Battery 27 Strap 30 Filter device 40 Frame 41 Ring member 42 Ring member 42a Opening 50 Cloth filter 51 Opening 60 Filter 61 Skeleton 62 Opening 63 Hooking rib 70 Front housing 71 Suction port 72 Opening 73 Reservoir 74 Drop prevention rib 75 protrusion 80 lock mechanism

Claims (4)

a body housing;
a filter attachable to the body housing;
and a locking mechanism that prevents the filter from falling off,
The locking mechanism comprises a stopper formed on the body housing and a hooking rib formed on the filter,
When the filter is rotated so that the hooking rib overlaps the stopper in the axial direction behind the stopper, the filter can be prevented from falling off from the body housing,
an erroneous mounting prevention rib is formed on the body housing in front of the stopper to prevent the filter from being mounted on the body housing in a state where the hooking rib overlaps the stopper in the axial direction;
The body housing is provided with a mounting portion along the circumferential direction to which a front housing that accommodates the filter in a state of being mounted on the body housing can be mounted,
The erroneous mounting prevention rib is formed so as to overlap with the stopper formed on the inner peripheral surface of the mounting portion in the axial direction,
The portable dust collector , wherein the erroneous mounting prevention rib extends from the stopper to the front end surface of the mounting portion in the axial direction . A portable dust collector according to claim 1,
A portable dust collector , wherein an inner surface of the front housing is formed with a drop-off prevention rib capable of restricting movement of the filter that has been erroneously assembled to the body housing . A portable dust collector according to claim 2,
The portable dust collector , wherein the fall prevention rib is formed in a substantially L shape . The portable dust collector according to any one of claims 1 to 3 ,
The portable dust collector, wherein a plurality of the erroneous mounting prevention ribs are formed at appropriate intervals along the width direction.

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