JP3186028U - Tool head structure - Google Patents

Abstract

Provided is a tool head structure that can be used for a bolt whose corner of a drive hole is broken and can be removed smoothly.
The tool head structure includes a tool head body and a drive assisting portion. The tool head main body has a handle 11, a circular joining column 14 extends on the drive side of one end of the handle, the joining column is installed shifted from the center position on the drive side, and the first surface and There are two surfaces 22, and a joining hole 24 penetrating in the direction of the second surface is provided at a position shifted from the center position on the first surface. The second surface has an annular slope with a predetermined slope at the end of the joint hole. The joint hole is fitted to the joint column of the tool head body, and by pressing the joint column, the joint column side is inverted and driven. A receiving edge 15 is formed that engages the mating slope of the auxiliary part.
[Selection] Figure 1

Description

  The present invention relates to a structure of a tool head, and more particularly to a structure of a tool head applied to a bolt having a broken drive hole corner.

  Bolts are useful in tightening and are used in large quantities in the manufacturing industry. Commonly used is a combination of a tool head and a driving device (eg, electric screwdriver, socket wrench), or a bolt is directly turned with a hex wrench, and the bolt is tightened or removed as it is turned. Therefore, it can be used for product assembly and disassembly.

  However, according to the principle of designing machine parts, the bolt is a replaceable consumable and the tool head or hex wrench is a necessary tool, so the hardness of the tool is much higher than the hardness of the bolt. Further, in order to smoothly fit the tool in the drive hole of the bolt or remove it from the drive hole in use, a gap is usually not provided between them. Since the gap is easily slipped by applying a force when the user tightens and removes the gap, the force is transferred or concentrated on the corner of the bolt drive hole. At the same time, since the material of the tool is hard, the corner is severely worn after being turned several times and gradually becomes circular, and a slip phenomenon occurs in the subsequent turning process, which makes it difficult to remove the bolt.

  Accordingly, it is indeed the goal of the industry to make an effort to develop what improvements can be made on the drawbacks of the conventional hex bar wrench or hex tool head as described above. In light of these, the inventor was motivated to create, designed based on many years of experience, and after considering various aspects, experimented with prototypes and made numerous improvements and modifications, resulting in the present invention. .

  The conventional tool head has a technical problem that the corner of the drive hole of the bolt is easily worn during use, and the bolt can no longer be turned after the corner is worn. An object of the present invention is to solve the technical problem in such a conventional tool head.

  The present invention provides a tool head structure. The tool head structure of the present invention includes a tool head body and a drive assisting portion. The tool head body has a handle, and there are six interlocking engagement surfaces on the outer periphery of the handle. By forming the engagement surfaces, the handle has a hexagonal column structure, and a circle is formed on the drive side of one end of the handle. The shape of the connecting column extends, the connecting column is installed shifted from the center position on the driving side, the driving auxiliary portion has a first surface and a second surface, and six cutting edges are formed on the outer periphery. A joint hole penetrating in the direction of the second surface is provided at a position shifted from the center position on one surface. The second surface is provided with an annular slope having a predetermined slope at the end of the joint hole, the joint hole is fitted to the joint column of the tool head body, and the joint column side is inverted by pressing the joint column, A receiving edge that engages with the mating slope of the drive assisting portion is formed. The drive assist part is limited by contact with only a part of the slope, not the entire surface of the receiving edge, and the drive assist part is prevented from falling off, and the drive assist part can be prevented from being caught by the tool head body. Becomes smooth. A surface frictional force between the drive assisting part and the tool head body is effective by providing a support part whose peripheral edge is inclined to the center on the first surface adjacent to the drive side, and using the support part to match the drive side. The tool head structure is configured.

  (1) The structure of the tool head of the present invention can be used not only for general bolts but also for bolts with broken drive hole corners, and the structure of the tool head is not limited to a single application. The effect and added value can be greatly improved.

  (2) According to the structure of the tool head of the present invention, the corner of the drive hole is damaged because the cutting edge and the engaging surface are designed to shift by utilizing the fact that the drive auxiliary part can be swiveled by the tool head body. It can also be used on bolts and can be removed smoothly, preventing problems when removing and installing products.

FIG. 1 is a three-dimensional assembly drawing of the present invention. FIG. 2 is an exploded view of the present invention. FIG. 3 is an enlarged cross-sectional view of the drive assisting portion of the present invention. FIG. 4 is an assembled cross-sectional view of the present invention. FIG. 5 is an assembled cross-sectional view of another angle of the present invention. FIG. 6 is a display diagram showing a state in which the present invention is used for a bolt having a broken drive hole corner. FIG. 7 is a display diagram 2 showing a state in which the present invention is used for a bolt having a broken drive hole corner. FIG. 8 is a view showing another embodiment of the tool head body of the present invention.

  The following description will be made in detail with reference to the drawings in order to further understand and recognize the object, features, and effects of the present invention.

  First, referring to FIGS. 1-5, the tool head of the present invention includes a tool head body (10) and a drive assisting portion (20). The tool head body (10) has a handle (11), and there are six interlocking engagement surfaces (12) on the outer periphery of the handle (11). By forming the engagement surface (12), the handle (12) 11) has a hexagonal columnar structure, and a circular joining column (14) extends to the drive side (13) at one end of the handle (11), and the joining column (14) is located from the center position of the drive side (13). The drive assisting portion (20) has a first surface (21) and a second surface (22), and six cut edges (23) are formed on the outer periphery. The first surface (21) A joint hole (24) penetrating in the direction of the second surface (22) is provided at a position shifted from the center position. The second surface (22) is provided with an annular inclined surface (25) having a predetermined inclination at the end of the joint hole (24), and the joint hole (24) is a joint column (14) of the tool head body (10). ) And pressing the joining column (14), the joining column (14) side is inverted, and a receiving edge (15) is formed that can mesh with the mating slope (25) of the drive assisting portion (20). In addition to preventing the drive assisting portion (20) from falling off due to contact with only one part of the receiving edge (15) and not the entire slope (25), the drive assisting portion (20) is prevented from falling off. 20) can prevent the tool head body (10) from being caught, and the turning becomes smooth. A support portion (26) whose peripheral edge is inclined toward the center is provided on the first surface (21) adjacent to the drive side (13), and the support portion (26) is used to match the drive side (13). The surface frictional force between the drive assisting part (20) and the tool head body (10) is effectively reduced.

  With the above structure, when the corner of the drive hole (31) of the bolt (30) is not yet damaged in actual use, the drive assisting part (20) and the tool head main body (10) are completely opposed directly. By fitting in form with the drive hole (31) of the bottle (30), the structure of the present invention can be used like a conventional tool head. Utilizing the fact that the drive assisting part (20) can pivot on the tool head body (10), the cutting edge (23) and the engagement surface (12) are designed to cause dislocation, so that the tool head of the present invention is driven. Very suitable for use on bolts (30) where the corners of the holes (31) are broken, the bolts (30) can be removed smoothly. If the corner of the drive hole (31) breaks, a normal tool head cannot drive it. In this case, the structure of the tool head of the present invention is inserted into the damaged drive hole (31) and turned by the user, so that the drive auxiliary part (20) is first rotated. Dislocation occurs in the tool head body (10) (see FIGS. 6 and 7 at the same time). Therefore, the engagement surface (12) and the cutting edge (23) are simultaneously engaged above and below the drive hole (31), so that the contact area during rotation is increased and the corners of the drive hole (31) are damaged. The bolt (30) can be removed smoothly. Further, since the drive assisting portion (20) is fitted with the tool head main body (10) in an eccentric state, when the drive assisting portion (20) is rotated, the drive assisting portion (20) is significantly different from the tool head main body (10). Since dislocation occurs, the structure is more suitable for driving the drive hole (31), which is severely damaged, and therefore has a wide application range.

  Further, the handle (11) of the tool head body (10) is bent to form an L-shaped hexagonal bar spanner (see FIGS. 1 and 2 at the same time). Alternatively, since it is used directly by a part of the tool head body (10) (see FIG. 8 at the same time), the tool head body (10) can be combined with an electric screwdriver or socket wrench to tighten the bottle.

  The following effects can be obtained by the structure of the specific embodiment described above. (1) The structure of the tool head is not only applied to a general bolt, but is more suitable for tightening a bolt (30) whose corner of the drive hole (31) is broken. Since the structure of the tool head is not limited to a single application, the use effect and added value can be greatly improved. (2) Utilizing the fact that the drive assisting part (20) can be swung by the tool head body (10), the cutting edge (23) and the engagement surface (12) are designed to cause dislocation, so that the drive hole (31) It can also be used for bolts (30) with broken corners, and removing the bolts (30) smoothly prevents problems when removing and attaching the product.

  However, the above is only a preferred embodiment of the present invention and does not limit the scope of the present invention. Various changes and modifications made in accordance with the scope of the utility model registration request of the present invention are all included in the scope of the utility model registration.

DESCRIPTION OF SYMBOLS 10 Tool head main body 11 Handle | hook 12 Engagement surface 13 Drive side 14 Joining column 15 Receiving edge 20 Drive auxiliary | assistance part 21 1st surface 22 2nd surface 23 Cutting edge 24 Joint hole 25 Matching slope 26 Supporting part 30 Bolt 31 Drive hole

Claims (7)

Including a tool head body and a drive assist part,
The tool head body has a handle, and a large number of continuous engagement surfaces are formed on the outer periphery of the handle. By forming the engagement surfaces, the handle has a polygonal columnar structure.
A joining column extends on the drive side of one end of the handle, the joining column is installed shifted from the center position on the drive side, the drive assisting portion has a first surface and a second surface, and a plurality of cut edges on the outer periphery. A joining hole penetrating in the direction of the second surface is provided at a location shifted from the center position on the first surface, and an alignment slope is provided in an annular shape at the end of the joining hole on the second surface. The tool head is characterized in that the hole is fitted into the joining column of the tool head body and the joining column is pressed, the joining column side is inverted by pressure, and a receiving edge is formed that can be engaged with the mating slope of the driving assist part. Construction.   The tool according to claim 1, wherein six consecutive engaging surfaces are formed on the outer periphery of the handle of the tool head main body, and the handle has a hexagonal columnar structure due to the formation of the engaging surfaces. Head structure.   2. The tool head structure according to claim 1, wherein a circular joining column extends on the drive side.   The tool head structure according to claim 1, wherein six cutting edges are formed on an outer periphery of the drive assisting portion.   2. The tool head structure according to claim 1, wherein a support portion whose peripheral edge is inclined in the center is provided on the first surface of the drive assisting portion.   The tool head structure according to claim 1, wherein a handle of the tool head body is bent to form an L-shaped hexagonal bar spanner.   2. The tool head structure according to claim 1, wherein the tool head body can be tightened by using the tool head body directly in combination with an electric screwdriver or a socket wrench.