Connecting jig for abrasive brushes, and power tool for abrasive brushes

Abstract

To provide a connecting jig for abrasive scrubbers and a power tool for abrasive scrubbers that can improve the work efficiency of polishing work using abrasive scrubbers. [Solution] A connecting jig 40 for fixing an abrasive scrubbing pad 60, which is interchangeably attached to an electric power tool 20 having a vibrating part 22 that vibrates in a linear direction, wherein the connecting jig 40 has a base part 41 that is fixed to the vibrating part 22 and a gripping part 42 that grips the side surface of the abrasive scrubbing pad 60 perpendicular to the vibration direction of the vibrating part 22.

Description

Technical Field

[0001] The present invention relates to a connecting jig for a polishing brush and an electric tool for a polishing brush.

Background Art

[0002] Conventionally, polishing work in repair work of various structures and the like is performed manually using a polishing brush. The polishing brush is either held by hand or attached to a handle for a polishing brush as described in Patent Document 1 below.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, the above manual polishing work has a problem of poor work efficiency.

[0005] The present invention has been completed based on the above circumstances, and an object thereof is to provide a connecting jig for a polishing brush and an electric tool for a polishing brush that can improve the work efficiency of polishing work using a polishing brush.

Means for Solving the Problems

[0006] The connecting jig for a polishing brush of the present invention is a connecting jig that can be detachably attached to an electric tool having a vibrating portion that vibrates in a linear direction and fixes a polishing brush. The connecting jig has a base portion fixed to the vibrating portion and a gripping portion that grips a side surface of the polishing brush orthogonal to the vibrating direction of the vibrating portion.

[0007] The electric tool for abrasive scrubbers of the present invention comprises an electric tool having a vibrating part that vibrates in a linear direction, a connecting jig attached to the electric tool, and an abrasive scrubber fixed to the connecting jig. [Effects of the Invention]

[0008] According to the present invention, the abrasive brush can be attached to a power tool by fixing the base of the connecting jig for the abrasive brush to the vibrating part of the power tool and gripping the abrasive brush with the gripping part. When the power tool is driven, the abrasive brush, whose accidental detachment is prevented by the gripping part, vibrates in a linear direction. Therefore, since polishing work can be performed using a power tool, the work efficiency of polishing work can be improved compared to manual polishing work. [Brief explanation of the drawing]

[0009] [Figure 1] This is a perspective view showing the use of the electric tool for abrasive scrubbing in Example 1. [Figure 2] This is an exploded perspective view showing an electric tool for abrasive scouring pads. [Figure 3] This is an exploded view showing the connecting jig. [Figure 4] This is a cross-sectional view showing the connecting jig. [Figure 5] This is a partially enlarged cross-sectional view showing a connection jig with a wiring fastener inserted into the bent locking portion. [Figure 6] This is a longitudinal cross-sectional view showing the connecting jig. [Figure 7] This is a perspective view showing how abrasive scrubbers are secured to a connecting jig using wiring fasteners. [Figure 8] This is an exploded view showing the connecting jig in Example 2. [Modes for carrying out the invention]

[0010] Preferred embodiments of the present invention are shown below. [1] The connecting jig for abrasive brushes of the present invention is a connecting jig for fixing an abrasive brush, which is interchangeably attached to an electric power tool having a vibrating part that vibrates in a linear direction, and the connecting jig has a base part that is fixed to the vibrating part, and a gripping part that grips the side surface of the abrasive brush perpendicular to the vibration direction of the vibrating part. With this configuration, the abrasive brush can be attached to the electric power tool by fixing the base part of the connecting jig for abrasive brushes to the vibrating part of the electric power tool and gripping the abrasive brush with the gripping part. When the electric power tool is driven, the abrasive brush vibrates in a linear direction, with the gripping part preventing it from accidentally falling off. Therefore, since polishing work can be performed using an electric power tool, the work efficiency of polishing work can be improved compared to manual polishing work. [2] In the connecting jig for the abrasive brush described in [1] above, the connecting jig may be formed by bending a single metal plate. When the connecting jig for the abrasive brush is formed from synthetic resin, a mold is required, but by forming it by bending a metal plate, a mold can be made unnecessary. Therefore, the manufacturing cost can be reduced compared to when the connecting jig for the abrasive brush is formed from synthetic resin. [3] In the connecting jig for abrasive scrubbers described in [1] or [2] above, the gripping portion may have opposing side wall portions erected from a pair of sides of the base portion perpendicular to the vibration direction, and claw portions extending inward from the side wall portions, wherein the claw portions bite into the abrasive scrubber to lock and grip it. With such a configuration, the abrasive scrubber can be gripped securely. [4] In the connecting jig for abrasive scrubbers described in any of [1] to [3] above, the connecting jig may have a projection that rises from at least one side of the base portion parallel to the vibration direction. With such a configuration, the projection positions the abrasive scrubber, making it easier to attach the abrasive scrubber in the correct position. [5] In the connecting jig for abrasive brush described in any of [1] to [4] above, the abrasive brush may be a porous body. [6] In the connecting jig for abrasive scrubbers described in any of [1] to [5] above, the tip of the claw portion may be formed in an arc shape. Compared to the case where the tip of the claw portion is pointed, it is easier to ensure a grip with coarse abrasive scrubbers. Therefore, the gripping portion can securely grip coarse abrasive scrubbers. In addition, the connecting jig for abrasive scrubbers can be handled more safely than when the tip of the claw portion is pointed. [7] In the connecting jig for abrasive scrubbers described in any of [1] to [6] above, the side wall portion may be less than or equal to half the thickness of the abrasive scrubber. [8] In the connecting jig for abrasive scrubbers described in any of [1] to [7] above, a bendable locking portion that can be folded inward may be formed on the side wall. With such a configuration, when a pin is pushed from the outside toward the inside of the bendable locking portion on the side wall, the pin is inserted into the inside of the side wall while bending the bendable locking portion, and pierces the abrasive scrubber. The bendable locking portion pressed by the pin becomes elastically in contact with the pin. The abrasive scrubber is prevented from detaching from the connecting jig for abrasive scrubbers by the pin, and the pin is prevented from detaching from the side wall by the bendable locking portion. Therefore, the abrasive scrubber can be held firmly. [9] In the connecting jig for abrasive scrubbers described in any of [1] to [8] above, the power tool is a polishing machine to which sanding paper can be attached, the vibrating part has a base part, the base part has a mounting part formed thereon for fixing a pad part to which the sanding paper is attached, and the base part of the connecting jig has a fixing part formed thereon that can be fixed to the mounting part by a fastening member. With such a configuration, the connecting jig for abrasive scrubbers can be fixed to a commercially available polishing machine by simply removing the pad part from the commercially available polishing machine and fixing the fixing part of the base part to the mounting part of the base part.Therefore, commercially available polishing machines can be easily used in polishing work using abrasive scrubbers.

[10] The electric tool for polishing brushes of the present invention comprises an electric tool having a vibrating part that vibrates in a linear direction, a connecting jig for polishing brushes as described in any of [1] to [9] above attached to the electric tool, and a polishing brush fixed to the connecting jig. With this configuration, when the electric tool is driven, the polishing brush, whose accidental detachment is suppressed by the gripping part, vibrates in a linear direction. Therefore, since polishing work can be performed using the electric tool, the work efficiency of polishing work can be improved compared to polishing work done by hand.

[0011] <Example 1> Hereinafter, an embodiment of the present invention will be described in detail with reference to Figures 1 to 7. The electric tool for abrasive scrubbing in this embodiment (hereinafter referred to as the electric tool for abrasive scrubbing 10) is used for surface preparation (scaling work) to remove dirt and rust from paint, cement, concrete, mortar, etc.

[0012] Figure 1 shows how the electric tool 10 for scrubbing brushes is used. The electric tool 10 for scrubbing brushes comprises an electric tool 20, a connecting jig for the abrasive brush (referred to as the connecting jig 40), and an abrasive brush 60 fixed to the connecting jig 40. The electric tool 20 has a main body 21, a vibrating part 22, and a handle part 23. The vibrating part 22 vibrates in a linear direction. The connecting jig 40 is attached to the electric tool 20 and fixes the abrasive brush 60 to the electric tool 20. The abrasive brush 60 is a commercially available abrasive used for surface preparation before painting, removal of stubborn rust, stripping of old paint films, hairline finishing, removal of welding burns, and cleaning dirt from concrete surfaces.

[0013] Hereinafter, for the convenience of explanation, the directions in FIG. 1 will be unified and described in the directions in the specification for each component member. Specifically, the vertical direction in FIG. 1 is the vertical direction, the vibration direction of the vibration unit 22 is the left - right direction, the direction orthogonal to the vertical direction and the left - right direction is the front - rear direction, the side to which the polishing brush 60 is fixed is the lower side, and the side where the handle portion 23 is provided is the rear side. In each figure, the positive direction side of the X - axis is the left side, the negative direction side of the X - axis is the right side, the positive direction side of the Y - axis is the upper side, the negative direction side of the Y - axis is the lower side, the positive direction side of the Z - axis is the front side, and the negative direction side of the Z - axis is the rear side. The X - axis is parallel to the vibration direction of the vibration unit 22. "Orthogonal" includes a state that is generally orthogonal in addition to a state that is strictly orthogonal. "Parallel" includes a state that is generally parallel in addition to a state that is strictly parallel.

[0014] A case where a commercially available grinding machine to which a sanding paper can be attached is used as the power tool 20 will be described. The main body portion 21 of the power tool 20 includes an operation portion 24 and a dust nozzle portion 25. A front grip 26 can be attached to and detached from the front surface of the main body portion 21. A battery 27 can be attached to and detached from the upper surface of the main body portion 21.

[0015] The operation portion 24 is provided on the upper surface of the main body portion 21. The operation portion 24 has buttons for performing various operations. By operating the operation portion 24, the power tool 20 can be started, stopped, and the vibration speed of the vibration unit 22 can be switched (high speed, medium speed, low speed), etc.

[0016] A dust bag or a dust collector can be attached to and detached from the dust nozzle portion 25. FIG. 1 shows a state where a dust bag is attached to the dust nozzle portion 25. The handle portion 23 extends rearward from the rear surface of the main body portion 21.

[0017] The vibrating part 22 moves back and forth in small, continuous movements. The vibrating part 22 has a base part 28 and a paper fixing part 29. The base part 28 and the paper fixing part 29 constitute a fixing structure for fixing sanding paper to the power tool 20. Specifically, a pad part (not shown) for attaching sanding paper is fixed to the base part 28. When fixing sanding paper to the power tool 20, the pad part is attached to the base part 28, the sanding paper is stretched taut along the flat surface of the pad part, and fixed by the paper fixing part 29. The paper fixing part 29 is a clip that holds the sanding paper between itself and the pad part. The paper fixing part 29 is used to fix and release the sanding paper by operating the lever part 31. The paper fixing part 29 and the lever part 31 are not used to fix the abrasive pad 60.

[0018] Figure 2 shows an exploded perspective view of the electric scouring pad tool 10. The base portion 28 has a plurality of mounting portions 32 for fixing the pad portion for sanding paper. Each mounting portion 32 has a hole formed in it for fixing the fastening member S. The connecting jig 40 is fixed to the base portion 28 using each mounting portion 32.

[0019] The abrasive scrubber 60 is a porous material and is made of nylon nonwoven fabric, polyester nonwoven fabric, etc. Preferably, the abrasive scrubber 60 is a nylon scrubber in which abrasive grains are attached to a nylon nonwoven fabric.

[0020] The abrasive scouring pad 60 has a relatively large thickness (vertical dimension) and a rectangular shape, making it a size that fits easily in the palm of the hand. Because the abrasive scouring pad 60 is thick, it cannot be attached to the vibrating unit 22 using the fixing structure for sanding paper.

[0021] The abrasive scouring pad 60 has upper and lower abrasive surfaces 61, a left side 62, a right side 63, a front side 64, and a rear side 65. The left side 62 and the right side 63 are sides perpendicular to the vibration direction of the vibrating part 22. The front side 64 and the rear side 65 are sides parallel to the vibration direction of the vibrating part 22.

[0022] The width (horizontal dimension) of the abrasive pad 60 is such that it can be detachably attached between the left and right side walls 49 of the connecting jig 40. For example, the width of the abrasive pad 60 should be about 100 mm to 110 mm. The length (front to back dimension) of the abrasive pad 60 should be about 140 mm to 190 mm. The thickness of the abrasive pad 60 should be about 35 mm to 45 mm. Note that the width, length, and thickness of the abrasive pad 60 do not necessarily have to be within the above ranges, as long as it can be attached to the power tool 20.

[0023] The connecting jig 40 has a base portion 41, a gripping portion 42, and a projection portion 43. The connecting jig 40 can be removably attached to the vibrating portion 22 of the power tool 20. The connecting jig 40 is formed by bending a single metal plate (for example, made of iron). A metal plate thickness of about 0.6 mm is preferable, as it allows the operator to bend and deform it while ensuring good strength and securely holding the abrasive scrubbing brush 60. When the connecting jig 40 is formed from synthetic resin, a mold is required, but by forming it from a metal plate, a mold can be eliminated. Therefore, the manufacturing cost can be reduced compared to when the connecting jig 40 is formed from synthetic resin.

[0024] The base portion 41 has fixing portions 44 that can be fixed to the mounting portion 32 by fastening members S. There is one fixing portion 44 at the front and one at the rear. Each fixing portion 44 has a fixing groove 45 that extends in the left-right direction. Each fixing groove 45 penetrates in the vertical direction. The distance between the front and rear fixing grooves 45 is the same as the distance between the mounting portion 32 in the front-rear direction.

[0025] Figure 3 shows the connecting jig 40 in its deployed state. The base portion 41 is rectangular in shape when viewed from above. The base portion 41 has a pair of first sides 46 extending in the front-rear direction (perpendicular to the vibration direction) and a pair of second sides 47 extending in the left-right direction (parallel to the vibration direction). In the deployed state of the connecting jig 40, the four corners 48 are rounded and chamfered. Also, the tip 53 of the claw portion 51, which will be described later, is arc-shaped. As a result, the outer edge of the deployed state of the connecting jig 40 does not have sharp corners, making it easy to handle safely.

[0026] The fixing groove 45 extends continuously from a position near the first side 46 on the left to a position near the first side 46 on the right. This makes it easy to align the fixing groove 45 with the mounting part 32 even if the left-right position of the mounting part 32 differs for each power tool 20 (see Figure 2).

[0027] Figure 4 shows a cross-sectional view of the connecting jig 40. The gripping portion 42 has a pair of side walls 49 and a claw portion 51. The pair of side walls 49 are erected upward from the first sides 46 on the left and right of the base portion 41. The pair of side walls 49 face each other in the left-right direction. The pair of side walls 49 grip the left side 62 and the right side 63 of the abrasive pad 60.

[0028] The height dimension H of each side wall portion 49 is 1 / 2 or less of the thickness of the abrasive pad 60. It is even better if the height dimension H of each side wall portion 49 is about 1 / 3 of the thickness of the abrasive pad 60. This makes it possible to invert the abrasive pad 60 and make both the upper and lower abrasive surfaces 61 easy to use. Also, when using the abrasive pad 60 by pressing it against the surface to be abraded, the side walls 49 are less likely to interfere with the surface to be abraded even if the abrasive pad 60 shrinks.

[0029] Each side wall section 49 is separated into multiple sections in the front-rear direction, as shown in Figure 3. Each side wall section 49 has five side wall parts 52. The side wall part 59 located at the rear end is longer in the front-rear direction than the other side wall parts 52.

[0030] As shown in Figure 4, the claw portion 51 extends inward in the left-right direction from the upper ends of the left and right side wall portions 49. The claw portion 51 bites into the abrasive brush 60, locking and gripping the abrasive brush 60. This allows the gripping portion 42 to securely grip the abrasive brush 60.

[0031] Each claw portion 51 extends diagonally upward from the upper end of the side wall portion 49. The inclination angle α1 of the claw portion 51 with respect to a virtual plane formed by extending the side wall portion 49 upward is preferably 90 degrees or less. The inclination angle α1 of the claw portion 51 is even better if it is 80 degrees. This makes it easier to achieve both the gripping force with which the connecting jig 40 grips the abrasive brush 60 and the ease with which the abrasive brush 60 can be attached to and detached from the connecting jig 40.

[0032] As shown in Figure 3, multiple claw portions 51 are provided continuously along approximately the entire length of the upper end (both left and right ends in the unfolded state) of each side wall portion 49. Three claw portions 51 are provided on each side wall part 52. The tip portion 53 of each claw portion 51 is formed in an arc shape. The tip portion 53 of the claw portion 51 provided at the front end is connected to the front end of the front side wall part 71. Because the tip portion 53 of the claw portion 51 is arc-shaped, it is easier to secure a grip on the coarse abrasive scrub pad 60 than if the tip of the claw portion 51 were pointed. Therefore, the gripping portion 42 can securely grip the coarse abrasive scrub pad 60. In addition, the connecting jig 40 for the abrasive scrub pad 60 can be handled more safely than if the tip of the claw portion 51 were pointed.

[0033] As shown in Figure 3, a bendable locking portion 54 is formed on the side wall portion 49. The bendable locking portions 54 are arranged in pairs, one front and one back. In each pair, the bendable locking portions 54 have opposite shapes. In each pair, the opposing sides of the bendable locking portions 54 are separated from the side wall portion 49.

[0034] Figure 5 shows a partially enlarged plan view of the connecting jig 40 with the wiring fastener 55 inserted into the bendable locking portion 54. The pair of bendable locking portions 54 are formed with spacing corresponding to the pair of pins 56 provided on the wiring fastener 55. The bendable locking portion 54 is elastically bent inward in the left-right direction when pressed from the outside in the left-right direction by the pins 56.

[0035] Figure 6 shows a longitudinal cross-sectional view of the connecting jig 40. The projection 43 is erected upward from the second side 47 on the front side of the base 41. The projection 43 positions the abrasive pad 60, making it easy to attach the abrasive pad 60 in the correct position. It also prevents the abrasive pad 60 from shifting forward or unexpectedly flying out. The projection 43 is not erected on the second side 47 on the rear side of the base 41. As a result, an open portion 57 is formed at the rear end of the connecting jig 40, which is open in the front-rear direction.

[0036] A projection claw portion 58 is provided at the upper end of the projection portion 43. The projection claw portion 58 extends rearward from the upper end of the projection portion 43. Each projection claw portion 58 extends diagonally upward from the upper end of the projection portion 43. The inclination angle α2 of the projection claw portion 58 with respect to a virtual plane formed by extending the projection portion 43 upward is equivalent to the inclination angle α1 of the claw portion 51. The projection claw portion 58 can further improve the gripping force for holding the abrasive scrubbing pad 60.

[0037] As shown in Figure 3, multiple projection claw portions 58 are provided continuously along the entire length of the upper end (front end in the deployed state) of the projection portion 43. The tip portions 58A of the projection claw portions 58 are formed in an arc shape, similar to the claw portion 51. The tip portions 58A of the projection claw portions 58 provided at the left and right ends are connected to the left and right ends of the projection portion 43, respectively.

[0038] Next, an example of polishing work using the connecting jig 40 and the electric tool 10 for scrubbing brushes in this embodiment will be described. First, the connecting jig 40 is made. The connecting jig 40 is made by bending a connected jig 40 in an unfolded state (see Figure 3) which has been formed by shearing a metal plate. The outer edge of the connected jig 40 in the unfolded state, including the corners 48, does not have any sharp parts, making it easier to ensure safety during bending.

[0039] Next, the connecting jig 40 is attached to the power tool 20 (see Figure 2). First, the pad part is removed from the commercially available power tool 20, exposing the mounting part 32 of the base part 28. Then, the fixing groove 45 of the connecting jig 40 is aligned with the mounting part 32 of the base part 28, and the base part 41 is placed on the base part 28. The fastening member S is inserted from the fixing groove 45 into the mounting part 32 and tightened to fix the base part 41 to the base part 28. In this way, the connecting jig 40 is attached to the power tool 20. Since the connecting jig 40 is attached using the mounting part 32 that is originally provided on the commercially available power tool 20, the commercially available power tool 20 can be easily used as a power tool 10 for scrubbing brushes.

[0040] Next, the abrasive scouring pad 60 is attached to the power tool 20 to which the connecting jig 40 is attached. The front surface 64 of the abrasive scouring pad 60 is placed against the protruding claw portion 58 and the protruding portion 43, and the abrasive scouring pad 60 is fitted between the left and right side wall portions 49. Since the rear side of the connecting jig 40 is open 57, abrasive scouring pads 60 with different dimensions in the front-to-back direction can be attached.

[0041] The left side 62 and right side 63 of the abrasive pad 60 are in contact with the tip 53 of the claw portion 51, and the left and right side walls 49 elastically open outward in the left-right direction. Since the left and right side walls 49 are elastically deformable, abrasive pads 60 with different dimensions in the left-right direction can be attached.

[0042] The upper polishing surface 61 of the polishing pad 60 is brought into contact with the base portion 41. The left and right claw portions 51 bite into the vertically intermediate portions of the left surface 62 and right surface 63 of the polishing pad 60 (see Figure 4). This makes it possible to attach polishing pads 60 of different thicknesses. In this way, the gripping portion 42 locks and grips the polishing pad 60. Since the connecting jig 40 can grip polishing pads 60 of various dimensions, the versatility of the connecting jig 40 can be increased.

[0043] Next, the abrasive brush 60 is secured by the wiring fastener 55. Figure 7 shows how the abrasive brush 60 is secured to the connecting jig 40 by the wiring fastener 55. A pair of pins 56 provided on the wiring fastener 55 are pushed from the outside inwards in the left-right direction against a pair of bendable locking parts 54 provided on the side wall 49. The pair of pins 56 of the wiring fastener 55 are inserted into the inside of the left and right side wall 49, bending the bendable locking parts 54, and pierce the abrasive brush 60 (see Figure 5). The bendable locking parts 54, pushed by the pins 56, become elastically in contact with each pin 56. The abrasive brush 60 is prevented from detaching from the connecting jig 40 by the pins 56 of the wiring fastener 55. The wiring fastener 55 is prevented from detaching from the side wall 49 by the bendable locking parts 54. As a result, the abrasive brush 60 is firmly secured to the connecting jig 40. In this way, the abrasive scrubbing pad 60 is attached to the power tool 20, and the power tool 10 for scrubbing pads is created.

[0044] Next, the electric tool 10 for the scouring pad is started. When the electric tool 20 is started by operating the control unit 24 of the electric tool 20, the motor speed increases. As shown in Figure 1, the lower polishing surface 61 of the abrasive pad 60 is evenly applied to the object to be polished, and the electric tool 20 is lightly pressed down while working. When the electric tool 20 is started, the vibrating unit 22 vibrates from side to side, and the abrasive pad 60 vibrates from side to side. Since polishing work can be performed using the electric tool 20, the work efficiency of the polishing work can be improved compared to manual polishing work. By using a vibrating electric tool 20, dust and other particles are less likely to scatter compared to when using a rotary electric tool. Even when the vibrating unit 22 vibrates at high speed, the abrasive pad 60 is firmly fixed to the connecting jig 40 and will not detach.

[0045] As the polishing work continues, the polishing pad 60 may gradually wear down, and its polishing performance may deteriorate. In this case, the polishing pad 60 can be easily replaced. Specifically, the wiring fastener 55 is removed, and the polishing pad 60 with deteriorated polishing performance is grasped by hand and removed from between the left and right side walls 49. Since the left and right side walls 49 elastically deform outward in the left-right direction, the polishing pad 60 is easily removed. Alternatively, the polishing pad 60 may be turned upside down so that the unused polishing surface 61 is facing downwards and attached to the connecting jig 40. Alternatively, the polishing pad 60 with deteriorated polishing performance may be replaced with a new polishing pad 60 and attached to the connecting jig 40. In this way, the polishing surface 61 can be easily replaced, making it easier to continue the polishing work. With the above steps, the polishing work using the electric tool 10 for the scouring pad is completed.

[0046] <Example 2> Next, a connecting jig for abrasive scrubbing brush according to Embodiment 2 of the present invention (hereinafter referred to as the connecting jig 70) will be described with reference to Figure 8. Figure 8 shows the connecting jig 70 in its unfolded state. The connecting jig 70 of this embodiment differs from the connecting jig 40 of Embodiment 1 in that the arrangement of the claw portion 51 and other components are different. Components similar to those of Embodiment 1 are denoted by the same reference numerals, and redundant explanations are omitted.

[0047] The connecting jig 70 according to this embodiment is attached to the power tool 20, similar to Embodiment 1, and fixes the abrasive scouring pad 60 to the power tool 20. Similar to Embodiment 1, the connecting jig 70 is formed by bending a single metal plate and has a base portion 41, a gripping portion 42, and a projection portion 43. Similar to Embodiment 1, the gripping portion 42 has a pair of side wall portions 49 and claw portions 51. Similar to Embodiment 1, each side wall portion 49 has a plurality of side wall parts 52. The rear end side wall part 71 has a larger vertical dimension (horizontal dimension in the unfolded state) than the other side wall parts 52. The claw portion 51 is not provided on the rear end side wall part 71. Also, the connecting jig 70 does not have a projection claw portion 58. The corners of the connecting jig 70 in the unfolded state are not rounded.

[0048] Even the connecting jig 70 of this embodiment, like in Embodiment 1, has a base portion 41 and a gripping portion 42. Therefore, by fixing the base portion 41 to the vibrating portion 22 of a commercially available power tool 20 and gripping the abrasive brush 60 with the gripping portion 42, a power tool 10 for abrasive brushes can be easily created. Consequently, since polishing work can be performed using the power tool 10 for abrasive brushes, the work efficiency of polishing work can be improved compared to manual polishing work.

[0049] <Other examples> The present invention is not limited to the embodiments described above and in the drawings, and the following embodiments, for example, are also included in the technical scope of the present invention. (1) In the above embodiment, the claw portion 51 is provided continuously in the front-rear direction. However, the arrangement of the claw portion 51 may be changed, for example, they may be spaced apart in the front-rear direction. (2) In the above embodiment, the tip portion 53 of the claw portion 51 is arc-shaped. However, the tip portion of the claw portion may have a straight line that approaches the tip. (3) In the above embodiment, the side wall parts 52 are arranged without gaps. However, the arrangement of the side wall parts may be changed, for example, they may be spaced apart in the front-to-back direction. (4) In the above embodiment, one fixing groove 45 is provided on the front side and one on the rear side. The number of fixing grooves is not limited to this, and the number of fixing grooves may be increased. In addition, a number of fixing holes or the like may be provided instead of fixing grooves. (5) In the above embodiment, the pins 56 of the wiring fastener 55 were inserted into the bent locking portion 54. However, the invention is not limited to this, and individual, unconnected pins may be inserted one by one into the bent locking portion. (6) In the above embodiment, a bend locking portion 54 is provided on the side wall portion 49, but it is not necessary to provide a bend locking portion. [Explanation of Symbols]

[0050] 10…Power tool for scouring pads (power tool for abrasive scouring pads) 20…Power tools 22…Vibrating part 28...Base section 32... Mounting part 40, 70... Connecting jigs (connecting jigs for abrasive scrubbing pads) 41...Base 42...Gripping part 43...Protruding piece 44…Fixed part 46...First side (a pair of sides perpendicular to the direction of vibration) 47...Second side (side parallel to the direction of vibration) 49... Side wall section 51… Nail area 53…Tip 54...Bending locking part 60... Abrasive scrubbing brush 62...Left side (side of the abrasive pad perpendicular to the vibration direction of the vibrating part) 63...Right side (side of the abrasive pad perpendicular to the vibration direction of the vibrating part) S... Fastening member

Claims

1. A connecting jig for fixing an abrasive scouring pad, which is interchangeably attached to an electric power tool having a vibrating part that vibrates in a linear direction, The connecting jig comprises a base portion fixed to the vibrating part and a gripping portion that grips the side surface of the abrasive scrubbing pad perpendicular to the vibration direction of the vibrating part. A connecting jig for abrasive scrubbers, characterized by the following features.

2. The aforementioned connecting jig is formed by bending a single metal plate. A connecting jig for an abrasive brush according to claim 1.

3. The gripping portion is, The base portion comprises a pair of sides perpendicular to the vibration direction, with opposing side wall portions erected from these sides, It has a claw portion that extends inward from the side wall portion, The claw portion bites into the abrasive scrub, locking and gripping the abrasive scrub. A connecting jig for an abrasive brush according to claim 1.

4. The connecting jig has a projection that extends from at least one side of the base portion parallel to the vibration direction. The connecting jig for abrasive scrubbing brush according to claim 3.

5. The abrasive scrubber is a porous material. A connecting jig for an abrasive brush according to claim 1.

6. The tip of the claw portion is formed in an arc shape. The connecting jig for abrasive scrubbing brush according to claim 3.

7. The side wall portion has a height of 1 / 2 or less of the thickness of the abrasive pad. The connecting jig for abrasive scrubbing brush according to claim 3.

8. A bendable locking portion that can be folded inward is formed on the side wall. The connecting jig for abrasive scrubbing brush according to claim 3.

9. The aforementioned power tool is a sanding machine to which sanding paper can be attached, The vibrating part has a base portion, and the base portion has a mounting portion formed thereon for fixing a pad portion to which the sanding paper is attached. The base portion of the connecting jig has a fixing portion that can be fixed to the mounting portion by a fastening member. A connecting jig for an abrasive brush according to claim 1.

10. A power tool having a vibrating part that vibrates in a linear direction, A connecting jig according to any one of claims 1 to 9 attached to the aforementioned power tool, A scouring pad fixed to the aforementioned connecting jig, An electric tool for abrasive scouring pads equipped with [a specific feature / feature].

Images