Inner hexagon bolt

Abstract

The utility model relates to the technical field of fasteners, in particular to an inside hexagonal bolt which comprises a screw rod, a bolt head is fixedly connected to the top of the screw rod, an installation groove is formed in the upper end face of the bolt head, at least one embedded block is arranged in the installation groove, the embedded blocks are attached to the installation groove, and the bolt head is fixedly connected with the screw rod. In the mounting groove, except the filling part of the embedded block, the residual space forms an inner hexagonal groove for an inner hexagonal wrench to insert; by adjusting the position of the embedded block, the inner hexagonal groove is kept stable, and the service life of the bolt is effectively prolonged; by removing a part of the embedded block, a damaged inner hexagonal groove is converted into a more stable inner triangular groove, and the situation that the inner hexagonal bolt cannot be taken out due to the fact that the inner hexagonal groove slips is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to a hexagon socket bolt. Background Art

[0002] The hexagon socket bolt is a type of fastener consisting of a bolt head and a screw. The bolt head is provided with a hexagonal groove for a hexagonal wrench to be inserted and rotated to rotate the hexagon socket bolt for tightening or loosening.

[0003] When the existing bolts are used in the slitting machine, due to the large number of finished product specifications of the slitting machine, the bolts need to be disassembled frequently during use. After multiple disassemblies, the hexagonal socket head of the countersunk hexagonal bolt will slip, making it impossible to remove the bolts, causing equipment shutdown, time-consuming and labor-intensive, and affecting production. Summary of the invention

[0004] The utility model aims to solve the problem that the hexagonal groove of the existing hexagonal socket bolt is damaged and slips after being disassembled many times, so that the bolt cannot be taken out. The utility model provides a hexagonal socket bolt, which can adjust the position of the embedding block to keep the hexagonal groove stable, thereby increasing the service life of the bolt and avoiding the situation that the hexagonal groove slips and the bolt cannot be taken out.

[0005] In order to achieve the above purpose, the technical solution of the utility model is:

[0006] A hexagon socket bolt comprises a screw rod, the top of which is fixedly connected to a bolt head, the upper end surface of which is provided with a mounting groove, at least one embedded block is provided in the mounting groove, the embedded block is fitted with the mounting groove, and a hexagon socket groove for inserting a hexagon socket wrench is provided in the mounting groove; the bolt can be easily tightened by inserting the hexagon socket wrench into the hexagon socket groove.

[0007] Furthermore, the embedding block is in the shape of a regular triangular pyramid, and the side length of the embedding block is equal to the side length of the inner hexagonal groove. When the edge of the inner hexagonal groove is damaged, the direction of the embedding block can be adjusted to replace the intact edge of the embedding block with the damaged edge to reshape the inner hexagonal groove.

[0008] Further, the installation groove is a hexagonal star shape, and an embedded block is arranged in each of the six corners of the installation groove. When all embedded blocks are damaged, the spaced limit blocks can be removed, the inner hexagonal groove can be transformed into an inner triangular groove, and the bolt can be continued to be used or removed and replaced.

[0009] Furthermore, the hexagon socket bolt is provided with a bolt cover, the bolt cover matches the bolt head, and the bolt cover is provided with a through hole at a portion corresponding to the hexagon socket groove. The bolt cover plays a sealing role to prevent the limit block from falling out of the installation groove, and the bolt cover and the bolt head can be connected by threads.

[0010] Furthermore, the through hole is a circular hole, and the radius of the through hole is larger than the distance between the farthest end of the hexagonal groove and the center point, and smaller than the distance between the farthest end of the embedded block and the center point, so that the bolt cover covers the embedded block to prevent the embedded block from falling out.

[0011] Furthermore, the bolt head and the screw rod are an integrally formed structure.

[0012] Through the above technical solution, the beneficial effects of the utility model are:

[0013] The utility model can replace the edge of the hexagon socket groove, thereby greatly improving the service life of the hexagon socket bolt. The utility model fully utilizes the shape characteristics of the hexagon socket groove and the embedded block, uses the edge of the embedded block as the edge of the hexagon socket groove, and when the edge of the hexagon socket groove is damaged, the direction of the embedded block is changed, and the edge of the complete new embedded block is used as the edge of the hexagon socket groove, thereby greatly improving the service life of the bolt.

[0014] The utility model can transform the inner hexagon groove into an inner triangular groove, thereby preventing the bolt from being unable to be removed after the inner hexagon groove is damaged, resulting in production suspension. After the inner hexagon groove is damaged, the embedded block can be removed at intervals, the inner hexagon groove can be transformed into an inner triangular groove, and the bolt of the utility model can be removed using an inner triangular wrench. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the utility model with a bolt cover;

[0017] Figure 3 It is a structural schematic diagram of the installation slot of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the bolt cover of the utility model;

[0019] The numbers in the accompanying drawings are: 1 is a screw rod, 2 is a bolt head, 3 is a mounting groove, 4 is an embedded block, 5 is a hexagonal groove, and 6 is a bolt cover. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0021] like Figure 1 to Figure 4As shown, this embodiment provides a hexagon socket bolt, including a screw rod 1, the top of which is fixedly connected with a bolt head 2, and the bolt head 2 and the screw rod 1 are an integrally formed structure. The upper end surface of the bolt head 2 is provided with a mounting groove 3, and at least one embedded block 4 is provided in the mounting groove 3, and the embedded block 4 is fitted with the mounting groove 3, and the mounting groove 3 is provided with a hexagon socket groove 5 for inserting a hexagon socket wrench, that is, in the mounting groove 3, after removing the filling part of the embedded block 3, the remaining space forms the hexagon socket groove 5 for inserting the hexagon socket wrench; because the embedded block 3 forms the edge of the hexagon socket groove 5, when the hexagon socket groove 5 is damaged, the stability of the hexagon socket 5 can be maintained by replacing the embedded block 3, thereby increasing the service life of the bolt.

[0022] Specifically, the embedding block 4 in this embodiment is in the shape of a regular triangular pyramid, and the side length of the embedding block 4 is equal to the side length of the inner hexagonal groove 5. The embedding block 4 is in the shape of a regular triangular pyramid because the three sides of the regular triangular pyramid are equal and all three sides can serve as the edges of the inner hexagonal groove 5.

[0023] like Figure 3 As shown, the mounting groove 3 is a hexagonal star shape, and an embedded block 4 is arranged in each of the six corners of the mounting groove 3. In this form, if any embedded block 4 is removed, a combination of a triangle and a trapezoid will be obtained, and the bolt can be unscrewed with an inner triangular wrench. When the three embedded blocks 4 arranged at intervals are removed, a triangle located at the center of the bolt head 2 can be obtained, and it is more labor-saving to use the inner triangular wrench to unscrew the bolt.

[0024] In order to prevent the embedded block 4 from being displaced in the installation groove 3, an outer hexagonal stopper matching the inner hexagonal groove 5 is provided at the bottom of the installation groove 3, and the embedded block 4 is limited in the angle formed by the outer hexagonal stopper and the groove wall of the installation groove 3. When the edge of the inner hexagonal groove 5 is damaged, the upper and lower ends of the embedded block 4 can be swapped, and the intact edge of the embedded block 4 located on one side of the stopper can be moved to the upper side.

[0025] In order to further define the position of the embedded block 4, the hexagon socket bolt is provided with a bolt cover 6, the bolt cover 6 matches the bolt head 2, and the bolt cover 6 is provided with a through hole at a portion corresponding to the hexagon socket groove 5. For ease of use, the through hole is a circular hole, the radius of which is larger than the distance between the farthest end of the hexagon socket groove 5 and the center point of the bolt, and smaller than the distance between the farthest end of the embedded block 4 and the center point of the bolt, and the bolt cover 6 is used to prevent the embedded block 4 from falling out of the mounting groove 3.

[0026] The bolt cover 6 and the bolt head 2 are detachably connected, and the bolt cover 6 and the bolt head 2 can be threadedly connected, the inner circle of the bolt cover 6 is provided with an internal thread, and the bolt head 2 is provided with an external thread matching the internal thread; the bolt cover 6 and the bolt head 2 can also be spliced ​​and connected, the top of the bolt cover 6 is provided with a mounting column, and the upper end of the bolt head 2 is provided with a mounting groove matching the mounting column.

[0027] The working principle of this utility model:

[0028] When the bolt is used for a long time, the hexagonal groove 5 at the upper end of the bolt head 2 is worn (that is, when the edge of the embedded block 4 facing the hexagonal groove 5 is damaged), remove the bolt cover 6, take out the damaged embedded block 4, rotate the embedded block 4, turn the intact edge of the embedded block 4 to the position of the hexagonal groove 5, reinstall the embedded block 4, cover the bolt cover 6, extend the hexagonal wrench from the circular hole in the center of the bolt cover 6, insert it into the hexagonal groove 5, and unscrew the bolt; if the hexagonal groove 5 is seriously damaged, remove the embedded blocks 4 at the top, lower left and lower right of the hexagonal groove 5, transform the hexagonal groove 5 into an inner triangular groove, and use the inner triangular wrench to unscrew the bolt.

[0029] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structures, features and principles described in the patent scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. A hexagon socket bolt, comprising a screw rod (1), the top of the screw rod (1) being fixedly connected to a bolt head (2), It is characterized in that The upper end surface of the bolt head (2) is provided with a mounting groove (3), at least one embedded block (4) is provided in the mounting groove (3), the embedded block (4) is fitted with the mounting groove (3), and a hexagonal recess (5) for inserting a hexagonal wrench is provided in the mounting groove (3).

2. A hexagon socket head bolt according to claim 1, It is characterized in that The embedding block (4) is in the shape of a regular triangular pyramid, and the side length of the embedding block (4) is equal to the side length of the hexagonal recess (5).

3. The hexagon socket head bolt according to claim 1, It is characterized in that The installation groove (3) is in the shape of a hexagonal star, and an embedding block (4) is arranged in each of the six corners of the installation groove (3).

4. The hexagon socket head bolt according to claim 1, It is characterized in that The hexagon socket bolt is provided with a bolt cover (6), the bolt cover (6) matches the bolt head (2), and the bolt cover (6) is provided with a through hole at a portion corresponding to the hexagon socket groove (5).

5. A hexagon socket head bolt according to claim 4, It is characterized in that The through hole is a circular hole, the radius of which is greater than the distance between the farthest end of the hexagonal recess (5) and the center point of the bolt, and less than the distance between the farthest end of the embedded block (4) and the center point of the bolt.

6. The hexagon socket head bolt according to claim 1, It is characterized in that The bolt head (2) and the screw rod (1) are an integrally formed structure.

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