JPH0548855U - Surface treatment tool - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a surface treatment tool capable of preventing damage such as a break in a portion of a flexible elastic body which is in contact with a peripheral edge of a support plate. A flexible elastic body 32 that is attached to a shaft end of a drive shaft 86 and is elastically compressed by being rotated and pressed against a surface S to be processed, and a back surface of the flexible elastic body 32 having a diameter smaller than that of the flexible elastic body 32. A surface treatment tool 30 having a support plate 40 having a rigidity for supporting the
A protective edge 42 that is curved toward the back side is formed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a surface treatment tool for performing surface treatment such as wax polishing and compound polishing on a surface to be treated.

[0002]

[Prior Art]

 Conventionally, as an example of a surface treatment tool, as shown in FIG. 9, a flexible elastic body 82 having a flat columnar shape made of sponge (the free state is indicated by a chain double-dashed line in the figure) is provided on the back side of the flexible elastic body. In some cases, a flat support plate 84 having a smaller diameter than the body 82 and having rigidity is provided.

[0003]

[Problems to be solved by the device]

 By the way, in such a surface treatment tool, when it is used by being attached to the shaft end of the drive shaft 86 and rotated and pressed against the surface S ′ to be processed, the support plate 84 of the flexible elastic body 82 is used. The portion of the flexible elastic body 82 that protrudes outward from the peripheral edge of the support plate 84 has a small amount of compression, and is compressed toward the rear side while contacting the edge portion 85 of the peripheral edge of the support plate 84. It elastically deforms so that it expands rapidly. Therefore, the edge portion 85 of the peripheral edge of the support plate 84 acts like a blade on the flexible elastic body 82, and when it is used for a long period of time, the flexible elastic body 82 has a break C or the like due to the edge portion 85. It has the disadvantage of causing damage.

On the other hand, in order to prevent this drawback, it is considered to interpose an intermediate member having a degree of flexibility between the flexible elastic body 82 and the support plate 84 between the flexible elastic body 82 and the support plate 84. However, this also increases the number of parts and increases the cost.

In view of the above-mentioned conventional drawbacks, an object of the present invention is to provide a surface treatment tool capable of preventing damage to a portion of a flexible elastic body in contact with a peripheral edge of a support plate without increasing the number of parts. It is to be.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a flexible elastic body that is elastically compressed by being attached to a shaft end of a drive shaft and being rotated and pressed against a surface to be processed, and a soft elastic body having a diameter smaller than that of the flexible elastic body. And a support plate having rigidity to support the back surface of the flexible elastic body, wherein a protective edge curved toward the back surface is formed around the entire circumference of the support plate. There is.

[0007]

[Action]

 In the present invention configured as described above, when used by being rotated by the drive shaft and pressed against the surface to be treated, the portion of the flexible elastic body facing the support plate is largely elastically compressed. At the same time, the peripheral portion of the flexible elastic body is elastically deformed so as to bulge gently along the protective edge while making surface contact with the protective edge of the support plate.

[0008]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 3, the surface treatment tool 30 includes a flexible elastic body 32 and a support plate 40. The flexible elastic body 32 is made of urethane foam sponge and is formed in a flat columnar shape. Further, a circular center hole 34 is formed in the central axis of the flexible elastic body 32.

A support plate 40 is fixed to the back side of the flexible elastic body 32 with an adhesive or the like. The support plate 40 supports the flexible elastic body 32 when the surface treatment tool 30 is pressed against the surface to be processed for use. The support plate 40 has a disk shape having a diameter smaller than that of the flexible elastic body 32, and is made of a material having rigidity such as hard resin.

A protective edge 42 is formed all around the support plate 40. The protective edge 42 is curved toward the back side of the support plate 40, and the angle between the tip of the protective edge 42 and the support plate 40 is 90 ° or more (in this embodiment, it is approximately 90 °). ).

A loop side sheet 44, which constitutes one side of the surface fastener, is fixed to the back side of the support plate 40. The support plate 40 and the loop side sheet 44 are provided with central holes 46 and 48 which have a smaller diameter and are concentric with the central hole 34 of the flexible elastic body 32.

As shown in FIG. 4, the surface treatment tool 30 is used by being attached to the drive shaft 18 of the electric motor 10. The electric motor 10 has a handle portion 14 and a power switch 16, and a drive shaft 18 (a male screw is formed) of a built-in motor (not shown) projects from the front portion thereof. A disc-shaped mounting member 20 having a diameter smaller than that of the support plate 40 is screwed to the drive shaft 18, and the hook side seat 24 fixed to the front surface of the mounting member 20 (which constitutes the other side of the above-mentioned surface fastener). On the other hand, the loop side sheet 44 of the surface treatment tool 30 is attached (see also FIG. 1).

The present embodiment is configured as described above. Therefore, as shown in FIG. 4, when it is rotated by the drive shaft 18 and pressed against the surface S to be treated such as the surface of an automobile to be used for polishing a wax, as shown in FIG. The portion of the elastic body 32 facing the support plate 40 is largely elastically compressed, and the peripheral edge portion of the flexible elastic body 32 is in surface contact with the protective edge 42 of the support plate 40, and gently along the protective edge 42. It elastically deforms as if it swells. Therefore, even if the flexible elastic body 32 is used for a long period of time, no break occurs in the peripheral edge portion.

Further, since the protective edge 42 is provided around the support plate 40, there is an effect that the strength of the support plate 40 is improved.

The surface treatment tool 30 can also be attached to the electric motor 10 as shown in FIG. That is, the first holding member 60 having the hexagonal center hole 62 is fitted to the drive shaft 18 with play by the center hole 62. On the other hand, a donut plate-shaped second holding member 66 is fitted in the central hole 34 of the flexible elastic body 32. A projecting portion 68 having a hexagonal cross section and having an internal thread formed inside thereof is provided at the center of the second holding member 66, and the projecting portion 68 is a central hole of the support plate 40. 46, etc., and is fitted into the central hole 62 of the first holding member 60 in a rotation-stopped state, and is fixed to the drive shaft 18 with a screw. The support plate 40 is sandwiched by the first sandwiching member 60 and the second sandwiching member 66, so that the surface treatment tool 30 is fixed to the drive shaft 18.

The present invention is not limited to the above embodiment, and as shown in FIG. 6, the protective edge 70 is curved until the angle between the tip of the protective edge 70 and the support plate 40 becomes 180 °. May be formed. Further, as shown in FIG. 7, the protective edge 72 is not limited to have a constant thickness, and the inner side surface of the protective edge 72 is formed linearly (in a vertical cross section) with respect to the support plate 40. Good. Furthermore, the protective edge does not necessarily have to be curved until the angle between the tip of the protective edge and the support plate is more than 90 °.

Further, the flexible elastic body is not limited to a single layer of sponge layer, and other members may be provided. For example, like a flexible elastic body 73 shown in FIG. 8, a skin layer 74 made of a napped wool cloth or a cotton cloth of Taor cloth is provided so as to cover the front surface and the side surface of the sponge layer 75. The loop-side sheet 76 (having flexibility) similar to that described above may be fixed to the back surface of 75.

Further, the support plate and the flexible elastic body do not have to be fixed integrally, and may be kept as separate bodies. For example, as shown in FIG. 8 as well, a support plate 77 that also serves as a mounting member is screwed to the drive shaft 18, and a hook side seat 78 fixed to the front surface of the support plate 77 and the loop side seat 76 described above. The flexible elastic body 73 may be attached by coupling.

Further, the surface treatment tool according to the present invention is not limited to wax polishing, but it is also possible to polish the surface of an automobile or the like by using a compounding agent. In addition, it goes without saying that the present invention can be implemented in a mode in which various modifications are made based on the knowledge of those skilled in the art.

[0020]

[Effect of the device]

 As described above, according to the present invention, when the portion of the flexible elastic body facing the support plate is elastically compressed, the peripheral edge of the flexible elastic body comes into surface contact with the protective edge of the support plate. At the same time, it elastically deforms so as to gently swell along the protective edge, so that even if the flexible elastic body is used for a long time, it is possible to prevent damage to the peripheral edge of the flexible elastic body such as a break. Further, unlike the case where the intermediate member is interposed between the support plate and the flexible elastic body, the number of articles does not increase, and the cost increase can be avoided.

[Brief description of drawings]

FIG. 1 is an enlarged view of an essential part showing the operation of a surface treatment tool according to an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view showing the entire surface treatment tool of FIG.

FIG. 3 is a plan view thereof.

FIG. 4 is a diagram showing an entire usage state of the surface treatment tool of FIG. 1.

FIG. 5 is a view showing a state in which the surface treatment tool of FIG. 1 is attached to an electric motor by another method.

FIG. 6 is an enlarged view of a main part of another embodiment of the present invention.

FIG. 7 is an enlarged view of an essential part of another embodiment of the present invention.

FIG. 8 is an enlarged view of an essential part of another embodiment of the present invention.

FIG. 9 is a diagram illustrating the operation of a conventional surface treatment tool.

[Explanation of symbols]

 30 surface treatment tool 32 flexible elastic body 40 support plate 42 protective edge

Claims (1)

[Scope of utility model registration request] 1. A flexible elastic body that is attached to the shaft end of a drive shaft and is elastically compressed by being rotated and pressed against a surface to be processed, and a back surface of the flexible elastic body having a smaller diameter than the flexible elastic body. A surface treatment tool comprising a supporting plate having rigidity to support, wherein a protective edge curved toward the back side is formed on the entire circumference of the supporting plate. Ingredient