JP2022091483A - Grinding tool - Google Patents

Abstract

To provide a grinding tool which has a very simple structure, can reduce a manufacturing cost to a low price, and is highly convenient for a user.SOLUTION: A grinding tool 100 that is used by stretching a grinding belt 50 with a grinding surface directed outward, includes: a first stretching member 1 and a second stretching member 2 that stretch the grinding belt; and a coupling portion 3 by which the stretching members are pivotally supported at one end of each stretching member so as to be bendable; wherein, when the grinding belt is stretched, the first stretching member and the second stretching member are formed into a substantially integrated shape and brought into close contact with an internal surface of the grinding belt.SELECTED DRAWING: Figure 2

Description

The present invention relates to a polishing tool using a polishing belt.

Many of the conventional polishing tools in which the abrasive material can be replaced have a very complicated structure in order to ensure their convenience and portability, and many of them have a high manufacturing cost.

Patent Document 1 describes a flat plate member that supports a rectangular abrasive on the lower surface, a handle that includes a turnbuckle and the hooks of the turnbuckle project from both ends, and a turnbuckle that is fixed to the upper surface of the flat plate member. A handle support member with a high ridge to engage the front hook of the turnbuckle and a low ridge with a slit through the hook on the back of the turnbuckle, and a rectangular abrasive folded along the front end of the flat plate member. It is equipped with an abrasive holding member that presses and fixes the front end of the turnbuckle from above, and a clamper that is fixed to the rear end of the rectangular abrasive and engages with the hook on the rear side of the turnbuckle. A polishing tool for adjusting the tension of a rectangular abrasive by turning a buckle is disclosed.

Patent Document 2 describes a substrate member, a clamp mechanism that is pivotally connected to the opposite end portion of the substrate member, and an angled contact surface provided at the end portion of the substrate member that faces the clamp mechanism. A polishing tool with a tension member arranged to be movably engaged is disclosed.

Japanese Unexamined Patent Publication No. 2014-69247. Japanese Patent Publication No. 2008-539095

In the inventions of Patent Documents 1 and 2, the convenience of the user is improved by being able to polish using the replaceable polishing sheet, but the manufacturing cost cannot be suppressed due to the complicated structure.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a polishing tool having a very simple structure, which can keep the manufacturing cost low, and which is highly convenient for the user. And.

That is, the present invention includes the following inventions.
[Invention 1]
A polishing tool used by stretching a polishing belt with the polishing action surface facing outward, the first tensioning member and the second tensioning member for tensioning the polishing belt, and one end of each tensioning member. The first tensioning member and the second tensioning member have a substantially integral shape when the polishing belt is stretched, and are in close contact with the inner surface of the polishing belt. A characteristic polishing tool.
[Invention 2]
The polishing tool according to invention 1, wherein the side surface of the polishing tool in contact with the inner surface of the polishing belt is substantially flat.
[Invention 3]
The polishing tool according to Invention 1 or 2, wherein at least one of the first and second tensioning members changes in thickness from the end on the side of the connecting portion to the other end [Invention 4].
The polishing tool according to any one of the inventions 1 to 3, further comprising a locking member that locks the connecting portions of the first and second tensioning members when the polishing belt is stretched.

Since the polishing tool of the present invention has a very simple structure, it can be manufactured at low cost. Further, the polishing tool of the present invention is highly convenient for the user because the polishing belt can be easily replaced.

Further, since the polishing tool of the present invention changes in thickness toward the tip portion, it is possible to easily polish members having various shapes.

FIG. 1 is a side view of the polishing tool according to the present invention. 2A and 2B are views of mounting the polishing tool of the present invention on a polishing belt, FIG. 2A is a view immediately before mounting the polishing tool of the present invention on a polishing belt, and FIG. 2B is a view of the present invention. It is the figure which attached the polishing tool to the polishing belt. FIG. 3 is a view in which a locking member is attached to the polishing tool of the present invention, FIG. 3 (a) is a side view, and FIG. 3 (b) is a locking member in which the polishing tool of the present invention is locked. It is a view seen from above.

As a result of diligent studies in order to solve the above problems, the present inventors have found that the polishing belt can be easily stretched by pivotally supporting the two tension members at the ends so as to be bendable. , The present invention has been completed. When the polishing tool of the present invention is attached to the polishing belt, the polishing tool is put into the inner direction of the polishing belt in a bent state, and then the connecting portion is rotated so that the double tension member has a substantially integral shape. And stretch the polishing belt. Hereinafter, embodiments of the polishing tool according to the present invention will be described with reference to FIGS. 1 to 3. However, the present invention is not intended to be limited to the configurations described below.

<First Embodiment>
FIG. 1 is a side view of the polishing tool 100 according to the present invention. FIG. 2 is a diagram in which the polishing tool 100 of the present invention is attached to the polishing belt 50, and FIG. 2 (a) is a diagram immediately before attaching the polishing tool 100 of the present invention to the polishing belt 50, FIG. 2 (b). Is the figure which attached the polishing tool 100 of this invention to a polishing belt 50.

The first tension member 1 and the second tension member 2 each form a part of the outer shape of the polishing tool 100. A connecting portion 3 is formed at the ends of the first tensioning member 1 and the second tensioning member 2, and is pivotally supported so as to be bendable as shown in FIG. This bending facilitates attachment to the polishing belt 50. Here, the term "bending" used in the present specification includes bending up to nearly 180 degrees, but also including bending in a dogleg shape, and the polishing tool of the present invention can be used as a polishing belt. It shall include those that bend at all angles that can be easily mounted when mounted.

In the embodiment of FIG. 1, the side surface side of the first tension member 1 has a right-angled trapezoidal shape, and two adjacent right-angled ends of the connecting portion side end portion 4 of the first tension member 1 are adjacent to each other. It has a structure with. The connecting portion side end portion 5 of the second tensioning member 2 is configured to face the connecting portion side end portion 4 of the first tensioning member 1.

In the embodiment of FIG. 1, the first tension member 1 has a right-angled trapezoidal shape, but the first tension member 1 has a connection portion side end portion 4 and a second tension member. It suffices if the form of the connecting portion side end portion 5 of 2 is opposite to the form. For example, the form of the connecting portion side end portion 4 of the first tensioning member 1 is a convex arc shape, and the form of the connecting portion side end portion 5 of the second tensioning member 2 is the connection of the first tensioning member 1. It may have a concave arcuate shape opposite to the shape of the portion side end portion 4.

At least one of the connecting portion side end portion 4 of the first tensioning member 1 and the connecting portion side end portion 5 of the second tensioning member 2 may have a thickness that changes toward the other end of each. .. By reducing the thickness from the connecting portion side ends 4 and 5 toward the other ends of each, it is possible to file even the finest parts of members having various shapes. On the other hand, if the thickness is increased from the connecting portion side end portions 4 and 5 toward the other end portions of each, it becomes easier to file the member on the large surface.

The length of the first tension member 1 and the second tension member 2 in FIG. 1 in the longitudinal direction is set so that the first tension member 1 is longer, but one of them is not longer. It may be set, or it may be set to substantially the same length. When the second tension member 2 is set to be short, the user can grip the connecting portion 3 so as to hold it down, and the fixing of the polishing tool 100 is not released by the connecting portion 3. Further, if the first tension member 1 and the second tension member 2 are set to have the same length, the thickness can be made thinner and thicker from the connecting portion side end portions 4 and 5, respectively. Since the surface of various members can be polished, the convenience for the user is improved.

As shown in FIG. 2A, when the polishing tool 100 is attached to the polishing belt 50, the polishing tool 100 is bent at the connecting portion 3 of the first tensioning member 1 and the second tensioning member 2. Put it in the inside of the polishing belt 50 in the state of being left. After that, as shown in FIG. 2B, when the polishing tool 100 is rotated by the connecting portion 3 so that the side surface of the polishing tool 100 becomes an integral shape from the bent state, the side surface side of the polishing portion 100 is formed. Is a substantially integral flat surface, and the side surface side of the polishing portion 100 is in close contact with the inner surface of the polishing belt 50. Further, since the upper surface 10 and the lower surface 20 of the polishing tool 100 are also substantially integrated flat surfaces, the polishing tool 100 is in close contact with the polishing belt 50 and fits in the user's hand, so that it is easy to use as a file. The polishing tool 100 has a structure that can be easily attached to the polishing belt 50 by pushing the polishing tool 100 so that both ends face downward. The polishing belt 50 used in the present invention uses a polishing working surface facing outward.

The material of the polishing tool of the present invention may be made of metal, resin, or wood, and the material may be selected according to the member to be polished, but it is preferable. , Made of metal.

<Second embodiment>
3A and 3B are views in which the locking member 6 is attached to the polishing tool 100 of the present invention, FIG. 3A is a side view, and FIG. 3B is a locking member 6 for the polishing tool 100 of the present invention. It is a figure seen from above when it was locked. One end of the locking member 6 is pivotally supported by either the first tensioning member 1 or the second tensioning member 2. At the other end of the locking member 6 which is not pivotally supported, a grip portion 7 for sandwiching the first tension member 1 and the second tension member 2 is provided. As a result, the first tensioning member 1 and the second tensioning member 2 are securely fixed at the connecting portion 3, so that the polishing tool 100 becomes easier to use.

The polishing tool 100 of the present invention can be suitably used as a file for wood, plastic, metal and the like.

1 1st tensioning member 2 2nd tensioning member 3 Connecting part 4 Connecting part side end of 1st tensioning member 5 Connecting part side end of 2nd tensioning member 6 Locking member 7 Grip part 10 Polishing tool Top surface 20 Polishing tool bottom surface 50 Polishing belt 100 Polishing tool

Claims (4)

A polishing tool used by tensioning a polishing belt with the polishing action surface facing outward, the first tensioning member and the second tensioning member for tensioning the polishing belt, and the respective tensioning members. The first tensioning member and the second tensioning member have a substantially integral shape when the polishing belt is stretched, and the inner direction of the polishing belt is provided at one end of the above. A polishing tool characterized by being in close contact with. The polishing tool according to claim 1, wherein the side surface of the polishing tool in contact with the inner surface of the polishing belt is substantially flat. The polishing tool according to claim 1 or 2, wherein at least one of the first and second tensioning members changes in thickness from the end on the side of the connecting portion to the other end. The polishing tool according to any one of claims 1 to 3, further comprising a locking member that locks the connecting portions of the first and second tensioning members when the polishing belt is stretched.

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