JP3185698U - Handler upper - Google Patents

Abstract

An object of the present invention is to provide a handler that is easy to use for an operator and can easily grind a part such as an inner peripheral side surface of a square hole of a workpiece.
A handler upper includes a grindstone, a grindstone holder that supports the grindstone, a rod-shaped handle, and a connecting portion. The connecting portion 5 connects the grindstone holder 3 to the distal end portion of the handle 4 in a state where the grindstone holder 3 is swingable (swingable) about the axis L1. Since the grindstone 2 can swing around the axis L1, the operator can press the grindstone parallel to the metal surface to be polished without taking an unreasonable working posture. A handler with excellent workability and easy to use for any worker can be realized.
[Selection] Figure 1

Description

  The present invention relates to a handler upper used for polishing finishing or the like.

  A hand-held polishing tool called a handler upper is used for polishing the outer surface of various metal workpieces, the inner peripheral side surface or the bottom surface of a workpiece recess, a hole or the like. The handler upper has a structure in which a grindstone is attached to the end of an elongated rod-shaped handle. Generally, the grindstone is diagonally fixed to the tip of the handle so that the polishing operation is easy. Patent Documents 1 and 2 describe a handler upper having this configuration.

Utility Model Registration No. 3151058 Japanese Utility Model Publication No. 6-21666

  Here, in the polishing operation of the metal surface or the like, the flat grinding surface of the grindstone is pressed in close contact with the metal surface to be polished, and the grindstone is reciprocated in parallel along the metal surface in this state. The grindstone attached to the tip of the handle held by the hand has a fixed mounting angle with respect to the handle, so the operator must keep the grindstone's grinding surface parallel to the metal surface in a certain direction. It is necessary to apply power.

  However, when polishing the inner peripheral side surface of the square hole formed on the workpiece or the corner portion of the rectangular bottom surface of the square hole, etc., the polishing operation is performed while maintaining the state where the grinding surface of the grindstone is in close contact with the metal surface. Difficult to do. For example, the operator needs to press the grindstone in an unreasonable posture such as forward bending so as to be parallel to the metal surface to be polished. For this reason, it may be difficult to perform polishing by pressing the grindstone against the metal surface to be polished with a uniform force.

  In addition, depending on the body shape / physique of the worker, the mounting angle of the grindstone with respect to the handle that is easy for the worker to use may be slightly different. For this reason, there is also a problem that the conventional handler is not easy to use for all workers.

  In view of these points, an object of the present invention is to provide a handler that can easily grind parts such as corners of a square hole of a workpiece and that is easy for an operator to use.

  In order to solve the above-mentioned problems, the handler of the present invention has a grindstone attached to the tip of the handle in a swingable (swingable) state so that the mounting angle changes as necessary. It is a feature.

  That is, the handler of the present invention has a grindstone, a grindstone holder that supports the grindstone, a rod-shaped handle, and a swingable (swingable) around a predetermined axis or fulcrum. It has the connection part connected with the front-end | tip part, It is characterized by the above-mentioned.

  When a metal surface is polished using the handler wrapper of the present invention, the operator can press the grindstone parallel to the metal surface to be polished without taking an excessive work posture. Therefore, it is possible to realize a handler that is superior in workability compared to a conventional handler with a fixed mounting angle and is easy to use for any operator.

  Here, when performing the polishing operation while reciprocating the grindstone along the surface of the object to be polished in the same direction, the force applied to the handle ensures that the grindstone is pressed against the surface of the object to be polished in the polishing direction. Need to be able to extrude. For this purpose, it is desirable that the grindstone is attached to the tip of the handle in a state where the grindstone can swing (is swingable) around a first axis perpendicular to the length direction of the handle.

  Depending on the case, the grindstone may be attached to the tip of the handle in a swingable manner around two axes. For example, the grindstone holder is coupled to the tip portion of the handle in a state in which the coupling portion can swing around a second axis perpendicular to the first axis.

  In order to make the grindstone swingable around the first axis perpendicular to the length direction of the handle, for example, the following configuration can be employed.

  That is, the connecting portion that connects the grindstone holder with the grindstone to the handle includes a connecting pin having the first axis as a central axis, and a left pin support plate and a right pin that support shaft end portions on both sides of the connecting pin. A support pin and a central pin support plate supporting a portion between the shaft end portions on both sides of the connecting pin, and the left pin support plate and the right pin support plate are provided on one side of the grindstone holder and the handle. A central pin support plate is attached to the other side.

  Generally, the grindstone is a rectangular parallelepiped grindstone. In this case, the grindstone holder is composed of a holder body plate having a rectangular outline, and the grindstone is attached to one surface of the holder body plate by an adhesive.

  Moreover, a connection part can be comprised as follows. That is, a central pin support plate having a central pin hole penetrating in the direction of the first axis is fixed to the other surface of the holder main body plate. A slit having a width into which the center pin support plate can be inserted is formed in the tip portion of the handle from the tip surface thereof in the length direction. A left pin support plate and a right pin support plate are formed at the tip by the slit. A left pin hole and a right pin hole penetrating in the direction of the first axis are formed in the left pin support plate and the right pin support plate, respectively. The connecting pin is passed through the left pin hole, the center pin hole, and the right pin hole, and a retaining ring for retaining is attached to each shaft end portion of the connecting pin protruding from the left pin hole and the right pin hole. . In this case, the direction perpendicular to the first axis is usually the long side direction of the grindstone.

  Here, when the abrasive grains of the grindstone of the grindstone wear due to use, it is convenient that the grindstone can be replaced with a new one. Therefore, it is desirable that the grindstone is attached to the grindstone holder in a removable state.

It is a perspective view which shows the handler upper to which this invention is applied. (A), (b) and (c) is the partial side view which shows the part of the grindstone holder of a handler upper center, a partial perspective view, and an exploded perspective view. It is explanatory drawing which shows the grinding | polishing operation | work using a handler upper. It is explanatory drawing which shows the handler upper which swings around 2 axes | shafts.

  Embodiments of a handler upper to which the present invention is applied will be described below with reference to the drawings.

  With reference to FIG. 1, the whole structure of the handler top which concerns on this Embodiment is demonstrated. The handler upper 1 includes a grindstone 2, a grindstone holder 3 that holds the grindstone 2, and a rod-shaped handle 4. The grindstone holder 3 is connected to the tip portion 4 b of the handle 4 through the connecting portion 5 in a swingable state. In this example, the connecting portion 5 is capable of swinging (swinging freely) about the axis L1 (first axis) orthogonal to the length direction of the handle 4 and the grindstone holder 3 is connected to the tip portion 4b of the handle 4. It is linked to.

  The grindstone 2 is a rectangular parallelepiped grindstone, and is attached to the handle 4 via the connecting portion 5 so that the long side direction thereof is a direction orthogonal to the axis L1. The grindstone holder 3 is made of a rectangular plate, and the lower surface thereof is a grindstone holding surface 3 a having a rectangular outline corresponding to the grindstone 2. The grindstone 2 is fixed to the grindstone holding surface 3 a via an adhesive 6. The grindstone holder 3 can be manufactured from a material having a predetermined strength and rigidity, such as metal, plastic, and ceramics.

  The handle 4 has an elongated bar shape with a flat rectangular cross section. The handle 4 can be formed from the same material as the grindstone holder 3. For example, the handle 4 and the grindstone holder 3 are manufactured from the same material.

  Next, the structure of each part will be described with reference to FIG. The connecting portion 5 includes a connecting pin 11 having the axis L1 as a central axis. Further, a portion between the left and right pin support plates 12 and 13 supporting the shaft end portions 11a and 11b on both sides of the connecting pin 11 and the shaft end portions 11a and 11b of the connecting pin 11 is supported. A central pin support plate 14 is provided. In this example, a central pin support plate 14 is attached to the upper surface 3b of the grindstone holder 3, and a left pin support plate 12 and a right pin support plate 13 are formed on the handle 4 side.

  A central pin support plate 14 is vertically fixed to the upper surface 3b of the grindstone holder 3 with the center position in the short side direction extending in the long side direction. The center pin support plate 14 is formed with a center pin hole 14a penetrating in the direction of the axis L1. On the other hand, a straight slit 4c having a constant width is cut from the tip surface of the tip 4b of the handle 4 along the handle length direction. By this slit 4c, the tip side portion of the tip portion 4b of the handle 4 is separated into left and right, and the left pin support plate 12 and the right pin support plate 13 of the connecting portion 5 are formed. A left pin hole 12a and a right pin hole 13a penetrating in the direction of the axis L1 are formed in the support plates 12 and 13, respectively.

  The central pin support plate 14 on the grindstone holder 3 side is made of a plate material having a certain thickness that can be inserted into the slit 4c. In addition, the contour shape of the center pin support plate 14 is a triangle in which the latter half is a rectangle having the same height as the thickness of the tip 4b of the handle 4, and the first half is gradually reduced in height toward the front. It has a shape. The latter half of the center pin support plate 14 is inserted into the slit 4c, and in this state, the connecting pin 11 is inserted into the left pin hole 12a, the center pin hole 14a, and the right pin hole 13a. Further, C-shaped retaining rings 15 and 16 for retaining are attached to shaft end portions of the connecting pin 11 protruding from the left pin hole 12a and the right pin hole 13a, respectively.

  Here, the grindstone 2 is bonded and fixed to the grindstone holding surface 3a of the grindstone holder 3 in a removable (replaceable) state. For example, the grindstone 2 is bonded and fixed to the grindstone holding surface 3a with a double-sided adhesive tape. When the grindstone 2a of the grindstone 2 is worn, the grindstone 2 can be peeled off from the grindstone holding surface 3a and replaced with a new grindstone. It has become.

  In the handler upper 1 configured as described above, the grindstone 2 is swingable (swingable) about the connecting pin 11. In this example, as shown in FIG. 2 (a), it can swing within an angle range of 180 degrees around the connecting pin 11. Therefore, as shown in FIG. 3, it is possible to easily press the grinding surface 2a of the grindstone 2 against the inner circumferential side surface 22 of the square hole 21 of the workpiece 20 to be polished. Therefore, the polishing operation can be performed efficiently while pressing each part of the grindstone 2 against the surface to be polished with a uniform force.

  In this example, the grindstone is attached to the handle in a state where the grindstone can be swung around one axis. However, for example, the grindstone may be swung around two axes. As shown in FIG. 4, the connecting portion 5 can connect the grindstone 2 to the handle 4 in a state where the grindstone 2 can swing around a second axis L2 orthogonal to the axis L1. The second axis L2 is, for example, an axis extending in the thickness direction of the grindstone 2. Alternatively, it is also possible to connect the grindstone 2 to the handle 4 in a state where the head can be swung in each direction around the pivot fulcrum using a universal joint or the like.

DESCRIPTION OF SYMBOLS 1 Handler top 2 Grinding wheel 2a Grinding surface 3 Grinding wheel holder 3a Grinding wheel holding surface 3b Upper surface 4 Handle 4b Tip part 4c Slit 5 Connection part 6 Adhesive 11 Connection pin 11a, 11b Shaft end part 12 Left pin support plate 12a Left pin hole 13 Right Pin support plate 13a Right pin hole 14 Center pin support plate 14a Center pin holes 15, 16 C-shaped retaining ring 20 Work piece 21 Hole 22 Inner peripheral side face L1 Axis L2 Second axis

Claims (6)

Whetstone,
A grindstone holder for holding the grindstone;
With a rod-shaped handle,
A connecting portion that connects the grindstone holder to the tip of the handle in a state that it can swing around a predetermined axis or fulcrum;
A handler top characterized by having.   2. The handler upper according to claim 1, wherein the connecting portion connects the grindstone holder to the tip end portion of the handle while being swingable about a first axis perpendicular to the length direction of the handle. .   3. The handler upper according to claim 2, wherein the connecting portion connects the grindstone holder to the tip portion of the handle in a state in which the connecting portion can swing around a second axis perpendicular to the first axis. The connection portion includes a connection pin having the first axis as a central axis, a left pin support plate and a right pin support plate supporting shaft end portions on both sides of the connection pin, and the shaft end portion of the connection pin. A center pin support plate supporting the portion between,
The left pin support plate and the right pin support plate are attached to one side of the grindstone holder and the handle, and the center pin support plate is attached to the other side. Handler upper. The grindstone is a cuboid shaped grindstone,
The grindstone holder includes a holder body plate having a rectangular outline,
The grindstone is attached to one surface of the holder body plate with an adhesive,
The center pin support plate having a center pin hole penetrating in the direction of the first axis is fixed to the other surface of the holder body plate,
A slit having a width capable of inserting the central pin support plate is formed in the tip portion of the handle from the tip surface thereof in the length direction thereof.
The left pin support plate and the right pin support plate are formed at the tip by the slit,
The left pin support plate and the right pin support plate are respectively formed with a left pin hole and a right pin hole penetrating in the direction of the first axis.
The connecting pin is passed through the left pin hole, the center pin hole and the right pin hole,
Retaining rings for retaining are respectively attached to the shaft end portions of the connecting pins protruding from the left pin hole and the right pin hole,
The handler upper according to claim 4, wherein a direction orthogonal to the first axis is a long side direction of the grindstone.   6. The handler upper according to claim 1, wherein the grindstone is attached to the grindstone holder in a removable state. 7.

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