Cleaner attachment and cleaner equipped with the same

Abstract

To provide a cleaner attachment capable of efficiently removing dusts generated during cutting and a cleaner equipped with the same.SOLUTION: An attachment 4 is a cleaner attachment attached to a cleaner body and adapted to remove dusts generated during cutting of a workpiece by a cutting tool. The attachment 4 comprises an attachment body 41. The attachment body 41 includes a rear surface 41A facing the workpiece, grooves 412-414 provided in the rear surface 41A, a surface, and a tool hole 419 which penetrates the grooves 412-414 from the surface and into which the cutting tool is inserted. The grooves 412-414 include the groove 412, the groove 413 extending in a first direction from the groove 412, and the groove 414 extending in a second direction different from the first direction from the groove 412. The attachment 4 further comprises a connection 43 that is attached to the attachment body 41 and that connects the grooves 412-414 and the suction port of a cleaner body.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a vacuum cleaner attachment and a vacuum cleaner including the same. More specifically, the present invention relates to a vacuum cleaner attachment that is attached to a vacuum cleaner body and is used to remove dust generated when a workpiece is machined with a cutting tool, and a vacuum cleaner including the same. [Background technology]

[0002] When cutting a workpiece using a cutting tool, such as drilling a hole in a wall, dust is generated at the processing position of the workpiece. This dust may adversely affect the cutting device in operation, the product, or the worker's body. Therefore, a technology that can remove dust generated during cutting without stopping the cutting process is disclosed in Patent Document 1 below and other documents.

[0003] The following Patent Document 1 discloses a drilling device that includes a guide for determining the direction of travel of a drill of a vibration drill machine, a support member with an exhaust hole for sucking up and removing dust such as powder and cutting chips generated during drilling, and a vacuum cleaner (dust exhaust means) connected to the exhaust hole of the support member. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 10-337604 Summary of the Invention [Problem to be solved by the invention]

[0005] In the technology of Patent Document 1 and the like, since the discharge hole is provided at a position away from the drill (in other words, the guiding guide), some of the dust generated from the processing position during cutting processing was not removed through the discharge hole. In addition, the dust not removed through the discharge hole scatters around the processing position. In such a case, in the technology of Patent Document 1 and the like, it was necessary to stop the cutting processing, remove the support member from the vacuum cleaner, attach a floor cleaning attachment to the vacuum cleaner, and separately remove the scattered dust with the vacuum cleaner. Thus, the technology of Patent Document 1 and the like had the problem of being unable to efficiently remove the dust generated during cutting processing.

[0006] The present invention is devised to solve the above-mentioned problems, and has an object to provide a vacuum cleaner attachment that can efficiently remove dust generated during cutting processing, and a vacuum cleaner equipped with the same. [Means for solving the problem]

[0007] A vacuum cleaner attachment according to one aspect of the present invention is a vacuum cleaner attachment that is attached to a vacuum cleaner body and is used to remove dust generated when a workpiece is processed with a cutting tool, the attachment comprising a main body, the main body including a back surface facing the workpiece, a groove provided on the back surface, a front surface which is the surface opposite the back surface, and a tool hole which penetrates from the front surface to the groove and is a hole for inserting a cutting tool, the groove including a central groove, a first extending groove extending from the central groove in a first direction, and a second extending groove extending from the central groove in a second direction which is different from the first direction, the attachment further comprising a connecting portion attached to the main body and connecting the groove to an air intake of the vacuum cleaner body.

[0008] In the above vacuum cleaner attachment, the tool hole preferably reaches at least one of the first and second extending grooves.

[0009] In the above vacuum cleaner attachment, preferably, no rotating object is present within the groove.

[0010] In the above vacuum cleaner attachment, preferably, the depth of each of the first and second elongated grooves decreases with increasing distance from the central groove.

[0011] The above vacuum cleaner attachment preferably further comprises a pipe that is inserted into the tool hole and forms an inner circumferential surface of the tool hole.

[0012] The above vacuum cleaner attachment preferably further includes a shutter capable of opening and closing the tool hole.

[0013] In the above-mentioned vacuum cleaner attachment, preferably, the connection part includes a body-side end which is the end closest to the body, and a tubular part made of an unbendable material protruding from the body-side end, the body part further includes a holding part which holds the connection part by covering the body-side end, and the connection part is rotatable while being held by the holding part.

[0014] A vacuum cleaner according to another aspect of the present invention includes the above-mentioned vacuum cleaner attachment and a vacuum cleaner body having an air inlet. Effect of the Invention

[0015] According to the present invention, it is possible to provide a vacuum cleaner attachment capable of efficiently removing dust generated during cutting processing, and a vacuum cleaner equipped with the attachment. [Brief description of the drawings]

[0016] [Figure 1] FIG. 1 is a perspective view showing a configuration of a vacuum cleaner 1 according to an embodiment of the present invention. [Diagram 2] 4 is a plan view showing a configuration of a front surface 41B side of an attachment 4 in one embodiment of the present invention. FIG. [Diagram 3] 4 is a plan view showing a configuration of a back surface 41A side of an attachment 4 in the embodiment of the present invention. FIG. [Figure 4] FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. [Diagram 5]FIG. 1 is a diagram conceptually showing a first usage state of a vacuum cleaner 1 in an embodiment of the present invention. [Figure 6] FIG. 2 is a cross-sectional view showing removal of dust DT in a first usage state of the vacuum cleaner 1 in an embodiment of the present invention. [Figure 7] FIG. 11 is a cross-sectional view showing removal of dust DT in a second usage state of the vacuum cleaner 1 in an embodiment of the present invention. [Figure 8] FIG. 2 is a cross-sectional view showing a configuration of a vacuum cleaner 1 in a modified example of an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0018] First, the configurations of the vacuum cleaner 1 and the attachment 4 in this embodiment will be described.

[0019] FIG. 1 is a perspective view showing a configuration of a vacuum cleaner 1 according to an embodiment of the present invention.

[0020] 1, vacuum cleaner 1 (an example of a vacuum cleaner) in this embodiment includes vacuum cleaner main body 2 (an example of a vacuum cleaner main body) and attachment 4 (an example of a vacuum cleaner attachment). Mounting part 23 of vacuum cleaner main body 2 has main body air inlet 231 (an example of a vacuum cleaner air inlet). Attachment 4 is attached to mounting part 23 of vacuum cleaner main body 2, and inserted into main body air inlet 231.

[0021] The vacuum cleaner body 2 includes a motor 21, a fan 22, a mounting portion 23, a filter 24, a dust cup 25, an exhaust port 26, a handle 27, and an operation display portion 28.

[0022] The motor 21, the fan 22, and the filter 24 are built into the vacuum cleaner body 2 and cannot be seen from the outside, so are indicated by dotted lines in Fig. 1. The motor 21 receives a supply of electric power and drives the fan 22 to rotate.

[0023] The fan 22 generates a negative pressure, which generates a suction force at the main body intake port 231 , and sucks in dust, dirt, or other particles through the main body intake port 231 of the mounting portion 23 .

[0024] The filter 24 removes the sucked dust, dirt, or dust, and guides it to a dust cup 25. As the filter 24, a cloth filter, a HEPA filter, or the like is used.

[0025] The dust cup 25 is detachable from the vacuum cleaner body 2 and stores dust, dirt, or other particles.

[0026] The exhaust port 26 exhausts the air that has passed through the filter 24 to the outside of the vacuum cleaner body 2.

[0027] The handle 27 is provided on the upper part of the vacuum cleaner body 2 and is the part that is gripped by the operator. The handle 27 facilitates operation and carrying.

[0028] In addition to the attachment 4, the vacuum cleaner 1 may be provided with an attachment (nozzle) (not shown) that can be attached to and detached from the vacuum cleaner body 2. Such attachments include a floor brush, a cleaving nozzle, a crevice nozzle, etc. By selecting and using an appropriate attachment from among these attachments according to the object to be cleaned, it is possible to effectively clean various places and surfaces, such as tatami mats, carpets, or gaps in furniture.

[0029] Fig. 2 is a plan view showing the configuration of the front surface 41B side of the attachment 4 in one embodiment of the present invention. Fig. 3 is a plan view showing the configuration of the back surface 41A side of the attachment 4 in one embodiment of the present invention. Fig. 4 is a cross-sectional view taken along the line IV-IV in Fig. 2.

[0030] 2 to 4, the attachment 4 is detachably attached to the vacuum cleaner body 2. The attachment 4 is an attachment for the vacuum cleaner 1 for removing dust generated when a workpiece is machined with a cutting tool. The cutting tool used with the attachment 4 may be a drill or hole saw (a tool used for drilling a hole), a reamer (a tool used for finishing the inner surface of a hole), an end mill or milling cutter (a tool used for milling), a tap (a tool used for making a screw thread), or a die (a tool used for making a male screw). The workpiece may be any object.

[0031] The attachment 4 includes an attachment body 41 (an example of a body) and a connection part 43 (an example of a connection part). The connection part 43 is attached to the attachment body 41. The attachment 4 has a substantially T-shape when viewed from the front surface 41B side.

[0032] The attachment body 41 includes a back surface 41A (an example of a back surface), a front surface 41B (an example of a front surface), a back cover 411, grooves 412 to 414 (an example of grooves), an attachment intake port 415, four casters 416, a holder 417 (an example of a holder), a front cover 418, a tool hole 419 (an example of a tool hole), and a pipe 420 (an example of a pipe). The attachment body 41 has a substantially rectangular shape when viewed from the front surface 41B side.

[0033] The back surface 41A faces the workpiece. The front surface 41B is the surface opposite to the back surface 41A. The back surface 41A is provided with a back cover 411, grooves 412 to 414, four casters 416, and the like.

[0034] The back cover 411 is substantially flat and constitutes a part of the back surface 41A of the attachment body 41. The back cover 411 is provided at a position closer to the connecting portion 43 (vacuum cleaner body 2) than the grooves 412 to 414. It comes into contact with the workpiece or the floor.

[0035] The grooves 412 to 414 are connected to each other and form one opening 421. There is no rotating object (such as a rotating brush for efficiently sucking up dirt) inside the grooves 412 to 414. An attachment intake port 415 is provided on the inner wall of the groove 412 (an example of a central groove) on the side of the connection part 43 (vacuum cleaner body 2). As is particularly clear when viewed in FIG. 3, the groove 413 (an example of a first extending groove) extends linearly from the groove 412 in a first direction (here, the right direction in FIG. 3). The groove 414 (an example of a second extending groove) extends linearly from the groove 412 in a second direction (here, the left direction in FIG. 3) that is different from the first direction. The grooves 412 to 414 form one opening 421 having, for example, a rectangular shape. The depth DP of each of the grooves 413 and 414 becomes shallower as it moves away from the groove 412.

[0036] Of the four casters 416, two of the casters 416 are provided near the connection portion 43, and the other two casters 416 are provided at each end of the grooves 413 and 414.

[0037] On the front surface 41B, a holding portion 417, a front cover 418, and the like are provided.

[0038] The holding portion 417 holds the connection portion 43 by covering the spherical portion 431 of the connection portion 43. The holding portion 417 has a cavity (not shown) for receiving the spherical portion 431 of the connection portion 43. The surface cover 418 constitutes a part of the surface 41B of the attachment body 41, and is provided around the holding portion 417.

[0039] Tool hole 419 penetrates from surface 41B of attachment body 41 to groove 413. Tool hole 419 is a hole for inserting a cutting tool, and has a size that allows the cutting tool to be inserted. Tool hole 419 may have any shape. Tool hole 419 has a circular shape with a diameter of, for example, 2 mm to 50 mm when viewed from surface 41B. As the size of tool hole 419 increases, the number of applicable cutting tools increases, but the suction power of vacuum cleaner 1 decreases. For this reason, tool hole 419 preferably has an appropriate size according to the cutting tool to be applied. Tool hole 419 may have any planar shape, and may be a shape other than a circle.

[0040] It is preferable that tool hole 419 reaches at least one of grooves 413 and 414. In particular, when tool hole 419 reaches groove 414 as shown in Figs. 1 to 4, attachment 4 is for right-handed people. When tool hole 419 reaches groove 413, attachment 4 is for left-handed people. There may be two tool holes 419, and each of the two tool holes 419 may reach grooves 413 and 414 from surface 41B. In this case, attachment 4 is applicable to both right-handed and left-handed people.

[0041] The pipe 420 is inserted into the tool hole 419. The pipe 420 forms the inner peripheral surface of the tool hole 419. The pipe 420 serves to close the internal space of the attachment body 41 that may be exposed by providing the tool hole 419.

[0042] The connecting portion 43 connects the grooves 412-414 with the main body intake port 231 of the vacuum cleaner 1. The connecting portion 43 includes a spherical portion 431 (an example of a main body side end portion) and a tubular portion 432 (an example of a tubular portion). The tubular portion 432 has a connection hole 433 at the end portion connected to the main body intake port 231. The outer diameter of the tubular portion 432 near the end portion on the connection hole 433 side may decrease stepwise or continuously toward the connection hole 433. This allows the attachment 4 to be attached to a plurality of vacuum cleaners having main body intake ports 231 with different diameters, improving the versatility of the attachment 4.

[0043] The spherical portion 431 is provided at the end of the connection portion 43 on the attachment body 41 side. The spherical portion 431 has a substantially spherical shape, and is rotatable while being held by the holding portion 417. This allows the connection portion 43 to move freely with respect to the attachment body 41 while the spherical portion 431 is held by the holding portion 417.

[0044] Furthermore, spherical portion 431 has connection hole 434 that connects to attachment air inlet 415 at a position facing attachment air inlet 415. Connection hole 434 is contained inside attachment main body 41 and cannot be seen from the outside, so it is shown by a dotted line in Fig. 3. When attachment 4 is attached to vacuum cleaner main body 2, grooves 412-414 are connected to main body air inlet 231 of vacuum cleaner main body 2 through attachment air inlet 415, connection hole 434, connection portion 43, connection hole 433, etc.

[0045] The tubular portion 432 protrudes from the spherical portion 431. The tubular portion 432 is made of an unbending material, which improves the operability of the attachment 4.

[0046] Next, a method of using the vacuum cleaner 1 in this embodiment will be described. Here, a method of using the vacuum cleaner 1 when drilling a wall WL (an example of a workpiece) using a drill DL (an example of a cutting tool) will be described.

[0047] Fig. 5 is a diagram conceptually showing a first usage state of the vacuum cleaner 1 in one embodiment of the present invention. Fig. 6 is a cross-sectional view showing the removal of dust DT in the first usage state of the vacuum cleaner 1 in one embodiment of the present invention.

[0048] With reference to Figs. 5 and 6, if the worker is right-handed, the worker holds the vacuum cleaner 1 in the left hand and the drill DL in the right hand. A bit BT for drilling is attached to the drill DL. If the worker is left-handed, the worker holds the vacuum cleaner 1 in the right hand and the drill DL in the left hand. The worker holds the vacuum cleaner 1 so as to press the back surface 41A of the attachment 4 against the wall WL. At this time, the opening 421 is covered by the wall WL. The vacuum cleaner 1 is held so that the processing position PS, which is the position where the hole drilling is performed in the wall WL, and the tool hole 419 coincide with each other. The processing position PS faces the space formed by the grooves 412 to 414. The processing position PS is visible from the front surface 41B side of the attachment 4 through the tool hole 419. This holding state of the vacuum cleaner 1 is maintained until the hole drilling is completed.

[0049] Next, the worker turns on the vacuum cleaner 1. This generates a suction force inside the attachment 4. Next, the worker presses the bit BT of the drill DL against the processing position PS through the tool hole 419, thereby performing hole drilling at the processing position PS. At this time, dust particles DT are generated at the processing position PS due to the processing. The dust particles DT are sucked into the inside of the vacuum cleaner body 2 through the grooves 412 to 414, the attachment intake port 415, the connection hole 434, the connection part 43, the connection hole 433, and the like, and are collected. The manner in which the dust particles DT are sucked is indicated by thick arrows in FIG. 6. Since there is no rotating object (such as a rotating brush for efficiently sucking up dirt) inside the grooves 412 to 414, the dust particles DT are efficiently collected without colliding with the rotating object.

[0050] In this way, hole drilling is performed at the processing position PS while the processing position PS faces the space formed by the grooves 412-414, so that most of the dust DT generated during processing (for example, 80% to 90%) can be collected inside the vacuum cleaner main body 2.

[0051] Here, the grooves 412-414 are connected to the outside of the attachment 4 through the tool hole 419. Furthermore, if the vacuum cleaner 1 is not held properly, a gap will be generated between the back surface 41A of the attachment 4 and the wall WL. This may cause dust DT to leak out of the attachment 4 through the tool hole 419 or the gap between the back surface 41A and the wall WL. However, most household vacuum cleaners in recent years have a sufficiently powerful suction power of 100 W or more, so the amount of dust DT that leaks out of the attachment 4 is small.

[0052] FIG. 7 is a cross-sectional view showing removal of dust DT in the second usage state of the vacuum cleaner 1 in one embodiment of the present invention.

[0053] Referring to FIG. 7, the dust DT leaked outside the attachment 4 is scattered around the processing position PS (here, on the floor FR below the wall FL). After the hole drilling process is completed, the worker cleans the floor FR with the vacuum cleaner 1 in the same manner as a general household vacuum cleaner. The worker turns on the vacuum cleaner and moves the attachment 4 with the back surface 41A of the attachment 4 in contact with the floor FR. The opening 421 is covered by the floor FR. As a result, the dust DT on the floor FR is sucked into the inside of the vacuum cleaner body 2 through the grooves 412 to 414, the attachment intake port 415, the connection hole 434, the connection portion 43, the connection hole 433, and the like, and is collected. The manner in which the dust DT is sucked is indicated by thick arrows in FIG. 7.

[0054] 8 is a cross-sectional view showing the configuration of the vacuum cleaner 1 in a modified example of an embodiment of the present invention. Fig. 8 corresponds to a cross-sectional view taken along line IV-IV in Fig. 2.

[0055] 8, the attachment 4 may further include a shutter 45 (one example of a shutter) capable of manually or automatically opening and closing the tool hole 419. The shutter 45 does not cover the tool hole 419 in a usage state in which the bit BT of the drill DL is inserted into the tool hole 419 (first usage state shown in FIGS. 5 and 6). The shutter 45 covers the tool hole 419 in a usage state in which the bit BT of the drill DL is not inserted into the tool hole 419 (second usage state shown in FIG. 7, when the vacuum cleaner 1 is not in use, etc.). The shutter 45 plays a role in preventing dust from leaking to the outside through the tool hole 419.

[0056] When the shutter 45 is manual, the shutter 45 may be provided on the surface 41B of the attachment 4 or the like, or may be a separate body from the attachment 4 (in other words, detachable from the attachment 4).

[0057] [Effects of the embodiment]

[0058] According to the above-mentioned embodiment, the hole drilling process is performed at the processing position PS while the processing position PS faces the space formed by the grooves 412-414, so that most of the dust DT generated during processing can be collected in the space of the grooves 412-414 and collected inside the cleaner body 2. In addition, the grooves 412-414 are connected to the body intake port 231, and the grooves 413 and 414 each extend in a different direction from the groove 412, so that the attachment 4 can be used as it is without replacing it, and the dust DT scattered outside the attachment 4 can also be efficiently collected through the grooves 412-414. As a result, the dust generated during cutting can be efficiently removed.

[0059] [others]

[0060] In the above embodiment, the workpiece is a vertical surface (wall WL) and the surface to be cleaned after processing is a horizontal surface (floor FR), but the workpiece and the surface to be cleaned after processing are arbitrary. For example, the workpiece and the surface to be cleaned after processing may both be horizontal surfaces, or the workpiece and the surface to be cleaned after processing may both be vertical surfaces.

[0061] The above-described embodiments and modifications should be considered as illustrative and not restrictive in all respects. The scope of the present invention is defined by the claims, not the above description, and is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0062] 1. Vacuum cleaner (example of a vacuum cleaner) 2 Vacuum cleaner body (example of vacuum cleaner body) 4 Attachments (Examples of vacuum cleaner attachments) 21 Motor of the vacuum cleaner body 22 Vacuum cleaner fan 23 Vacuum cleaner body attachment part 24 Vacuum cleaner body filter 25 Dust cup of the vacuum cleaner body 26 Exhaust port of the vacuum cleaner body 27 Vacuum cleaner handle 28 Operation display unit of the vacuum cleaner body 41 Attachment body of attachment (example of body) 41A Back side of the attachment body (example of the back side) 41B Surface of the attachment body (example of surface) 43 Attachment connection part (example of connection part) 45 Attachment shutter (example of shutter) 231 Main body air intake of mounting part (example of air intake of vacuum cleaner body) 411 Back cover of attachment body 412-414 Grooves of the attachment body (examples of a groove, a central groove, a first extending groove, and a second extending groove) 415 Attachment intake port on the attachment body 416 Caster of attachment body 417 Attachment body holding part (an example of a holding part) 418 Attachment body surface cover 419 Tool hole on attachment body (example of tool hole) 420 Attachment body pipe (example of pipe) 421 Groove Opening 431 Spherical part of the connection part (example of the end part on the main body side) 432 Tubular part of a connection (an example of a tubular part) 433,434 Connection holes of connection parts BT Drill Bits DL Drill (an example of a cutting tool) DP Groove Depth DT dust FR Floor WL Wall (an example of a workpiece)

Claims

1. A vacuum cleaner attachment that is attached to a vacuum cleaner body and removes dust generated when a workpiece is processed with a cutting tool, It has a main body, The body includes: A back surface facing the workpiece; A groove provided on the back surface; a front surface which is a surface opposite to the back surface; a tool hole penetrating from the surface to the groove and into which a cutting tool is inserted; The groove is The central groove, a first extending groove extending in a first direction from the central groove; a second extending groove extending from the central groove in a second direction different from the first direction; The vacuum cleaner attachment further comprises a connection portion attached to the main body and connecting the groove to an air intake port of the vacuum cleaner main body.

2. The vacuum cleaner attachment of claim 1 , wherein the tool hole reaches at least one of the first and second extending grooves.

3. 2. A vacuum attachment as claimed in claim 1, wherein there are no rotating objects within the groove.

4. 2. A vacuum cleaner attachment as claimed in claim 1, wherein the depth of each of the first and second elongated grooves decreases with distance from the central groove.

5. 2. The vacuum cleaner attachment according to claim 1, further comprising a pipe that is inserted into the tool hole and that forms an inner circumferential surface of the tool hole.

6. The vacuum cleaner attachment according to claim 1 , further comprising a shutter capable of opening and closing the tool hole.

7. The connection portion is a body side end portion which is an end portion close to the body; a tubular portion protruding from the body end and made of an unbendable material; The main body further includes a holding portion that holds the connection portion by covering the main body side end portion, The vacuum cleaner attachment according to claim 1 , wherein the connection portion is rotatable while being held by the holding portion.

8. A vacuum cleaner attachment according to any one of claims 1 to 7; and a cleaner body having the air inlet.

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