Bolt convenient to adjust

By designing grooves and guide holes in the bolt head, and using the expansion block and the rotation of the center column to increase the bolt head area, the problem of limited application scope of the bolt is solved, and the tightening effect is achieved to adapt to through holes of different specifications.

CN223294027UActive Publication Date: 2025-09-02YIXING MINGYING STANDARD PARTS CO LTD
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Patent Information

Application Number
CN202422594710.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-28
Publication Date
2025-09-02
Estimated Expiration
2034-10-28

AI Technical Summary

Technical Problem

When the existing bolts are tightened and connected, it is difficult to adapt to different specifications of through holes, resulting in the head passing through the through holes or the larger specifications of bolts need to be replaced, and the scope of application is limited.

Method used

A bolt head is designed with grooves and guide holes, with an expansion block and a central column inside. The central column is driven to rotate through the rotary block, so that the expansion block extends to increase the head area, and is fixed by the block to adapt to the through holes of different specifications.

Benefits of technology

The expansion block can extend to the outside of the bolt head, increasing the fastening area, adapting to different specifications of through holes, and not affecting the conventional use of bolts, expanding the application range, and the structure is simple and easy to adjust.

✦ Generated by Eureka AI based on patent content.

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    Figure CN223294027U_ABST
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Abstract

The utility model relates to the technical field of bolts, in particular to a bolt convenient to adjust, which comprises a bolt head portion and a bolt rod portion fixedly connected to the lower end face of the bolt head portion, a groove is arranged on the upper end face of the bolt head portion, and two guide holes communicated with the inside of the groove are arranged on the outer wall of the bolt head portion. Extension blocks are movably connected to the interiors of the two guide holes, the middle column is kept fixed when rotating and cannot continue rotating, at the moment, the two extension blocks are propped against and fixed by the two propping blocks correspondingly, the extension blocks are prevented from being retracted, the two extension blocks extend to the outer side of the bolt head, the bottom area of the bolt head is enlarged, and the service life of the bolt is prolonged. The application range of the bolt is widened, normal use of the bolt is not affected when the expansion block is not used, the design position is relatively hidden, the occupied space outside the head of the original bolt is not increased, the bolt is suitable for being used for fastening and connecting two parts with through holes, the through holes of the two parts are different in specification, the structure is simple, and use is convenient. The adjustment is convenient.
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Description

Technical Field

[0001] The utility model relates to the technical field of bolts, in particular to a bolt which is easy to adjust. Background Art

[0002] A bolt is a mechanical part, a cylindrical threaded fastener that is matched with a nut. It is a type of fastener consisting of a head and a screw. It needs to be matched with a nut to fasten two parts with through holes. This type of connection is called a bolt connection. If the nut is unscrewed from the bolt, the two parts can be separated. Therefore, the bolt connection is a detachable connection and has a wide range of applications.

[0003] However, in actual use, most bolts and nuts are used to fasten two parts with through holes. But sometimes when the through hole of one of the fastened parts is an unconventional through hole, the fixed specification of the bolt may easily cause the head of the bolt to pass through the through hole and fail to achieve the fastening effect, or a larger and better bolt may need to be replaced to achieve fastening, which makes the application range of single-specification bolts not wide enough. Utility Model Content

[0004] The purpose of the utility model is to provide a bolt which is easy to adjust and has the characteristics of simple structure, easy adjustment and improved application range of the bolt.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a bolt that is easy to adjust, comprising a bolt head and a bolt rod fixedly connected to the lower end face of the bolt head, the upper end face of the bolt head being provided with a groove, the outer wall of the bolt head being provided with two guide holes connected to the interior of the groove, the interior of the two guide holes being movably connected with an expansion block, the inner center of the groove being threadedly connected to a center column, and the outer wall of the center column being fixedly connected with two abutment blocks.

[0006] In order to facilitate the use of the stop block to support the expansion block, as a preferred embodiment of the utility model of an easily adjustable bolt, the stop block and the expansion block are located on the same horizontal line.

[0007] In order to limit the expansion block, as a bolt that is easy to adjust in the present invention, two limiting blocks are fixedly connected to the outer wall of one side of the expansion block located inside the groove.

[0008] In order to drive the center column to rotate, as a bolt that is easy to adjust in the present invention, a rotating block is fixedly connected to the upper end surface of the center column.

[0009] In order to avoid affecting the normal use of the bolt, as a preferred embodiment of the present invention of a bolt that is easy to adjust, the upper end surface of the rotating block is lower than the upper end surface of the bolt head.

[0010] In order to facilitate rotation, as a preferred embodiment of the utility model of an easily adjustable bolt, the bolt head is in a hexagonal structure.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0012] Push the two extension blocks outward to extend them to the outside of the bolt head, then rotate the center column through the turning block. The center column is threaded inside the groove. When the center column rotates and cannot continue to rotate, it remains fixed. At this time, the two retaining blocks respectively press and fix the two extension blocks to prevent the extension blocks from retracting. The two extension blocks extend to the outside of the bolt head, thereby expanding the bottom area of ​​the bolt head and improving the application range of the bolt. The extension blocks do not affect the normal use of the bolt when not in use, and the design position is relatively concealed, which will not increase the occupied space outside the original bolt head. It is suitable for fastening and connecting two parts with through holes, and the through holes of the two parts are not of the same specifications. The structure is simple and easy to adjust. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the overall main structural diagram of the utility model;

[0014] Figure 2 This is a top-down cross-sectional structural diagram of the bolt head of the present invention;

[0015] Figure 3 This is a top view of the external structure of the bolt head of the utility model;

[0016] Figure 4 This is a main sectional structural diagram of the bolt head of the present invention.

[0017] In the figure: 1. Bolt head; 2. Bolt shank; 3. Groove; 4. Guide hole; 5. Extension block; 6. Center column; 7. Stop block; 8. Limit block; 9. Rotating block. DETAILED DESCRIPTION

[0018] See also Figures 1 to 4 A bolt that is easy to adjust includes a bolt head 1 and a bolt rod 2 fixedly connected to the lower end surface of the bolt head 1. A groove 3 is provided on the upper end surface of the bolt head 1. Two guide holes 4 communicating with the interior of the groove 3 are provided on the outer wall of the bolt head 1. The interior of the two guide holes 4 is movably connected to an expansion block 5. The inner center of the groove 3 is threadedly connected to a center column 6. The outer wall of the center column 6 is fixedly connected to two abutment blocks 7.

[0019] In this embodiment: when in use, first push the two expansion blocks 5 outward to extend the expansion blocks 5 to the outside of the bolt head 1, and then rotate the middle column 6 through the turning block 9. The middle column 6 is threadedly connected inside the groove 3. When the middle column 6 rotates and cannot continue to rotate, it remains fixed. At this time, the two abutting blocks 7 respectively press and fix the two expansion blocks 5 to prevent the expansion blocks 5 from being retracted. The two expansion blocks 5 extend to the outside of the bolt head 1, thereby expanding the bottom area of ​​the bolt head 1, thereby improving the application range of the bolt, and the expansion block 5 does not affect the normal use of the bolt when not in use, and the design position is relatively hidden, and will not increase the occupied space outside the original bolt head 1. It is suitable for fastening and connecting two parts with through holes, and the through holes of the two parts are not of the same specifications, the structure is simple, and it is easy to adjust.

[0020] As a technical optimization solution of the present invention, the stop block 7 and the expansion block 5 are located on the same horizontal line.

[0021] In this embodiment, the abutting block 7 and the expansion block 5 are located on the same horizontal line, so that the expansion block 5 can be pressed and fixed by the abutting block 7 .

[0022] As a technical optimization solution of the present invention, two limiting blocks 8 are fixedly connected to the outer wall of one side of the expansion block 5 located inside the groove 3.

[0023] In this embodiment, two limiting blocks 8 are fixedly connected to the outer wall of one side of the expansion block 5 located inside the groove 3 to limit the expansion block 5 and prevent the expansion block 5 from separating from the bolt head 1.

[0024] As a technical optimization solution of the present invention, a rotating block 9 is fixedly connected to the upper end surface of the center column 6 .

[0025] In this embodiment, a rotating block 9 is fixedly connected to the upper end surface of the center column 6 , and the rotating block 9 facilitates the center column 6 to rotate.

[0026] As a technical optimization solution of the present invention, the upper end surface of the rotating block 9 is lower than the upper end surface of the bolt head 1 .

[0027] In this embodiment, the upper end surface of the rotating block 9 is lower than the upper end surface of the bolt head 1, so as to prevent the rotating block 9 from extending to the outside of the bolt head 1 and affecting its normal use.

[0028] As a technical optimization solution of the present invention, the bolt head 1 has a hexagonal structure.

[0029] In this embodiment, the bolt head 1 is in a hexagonal structure, which is easy to rotate and has strong versatility.

[0030] Working principle: When in use, first push the two expansion blocks 5 outward to extend the expansion blocks 5 to the outside of the bolt head 1, and then rotate the middle column 6 through the turning block 9. The middle column 6 is threaded inside the groove 3. When the middle column 6 rotates and cannot continue to rotate, it remains fixed. At this time, the two retaining blocks 7 respectively press and fix the two expansion blocks 5 to prevent the expansion blocks 5 from retracting. The two expansion blocks 5 extend to the outside of the bolt head 1, thereby expanding the bottom area of ​​the bolt head 1, thereby improving the application range of the bolt, and the expansion block 5 does not affect the normal use of the bolt when not in use, and the design position is relatively hidden, and will not increase the occupied space outside the original bolt head 1. It is suitable for fastening and connecting two parts with through holes, and the through holes of the two parts are not of the same specifications. The structure is simple and easy to adjust.

[0031] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A bolt that is easy to adjust, comprising a bolt head (1) and a bolt shank (2) fixedly connected to the lower end surface of the bolt head (1), characterized in that: The upper end surface of the bolt head (1) is provided with a groove (3), the outer wall of the bolt head (1) is provided with two guide holes (4) connected to the interior of the groove (3), the interior of the two guide holes (4) are movably connected with expansion blocks (5), the inner center of the groove (3) is threadedly connected with a center column (6), and the outer wall of the center column (6) is fixedly connected with two abutment blocks (7).

2. The adjustable bolt according to claim 1, characterized in that: The abutment block (7) and the expansion block (5) are located on the same horizontal line.

3. The easily adjustable bolt according to claim 1, characterized in that: The expansion block (5) is located on one side of the outer wall inside the groove (3) and is fixedly connected to two limit blocks (8).

4. The easily adjustable bolt according to claim 1, characterized in that: The upper end surface of the center column (6) is fixedly connected with a rotating block (9).

5. The easily adjustable bolt according to claim 1, characterized in that: The upper end surface of the rotating block (9) is lower than the upper end surface of the bolt head (1).

6. The easily adjustable bolt according to claim 1, characterized in that: The bolt head (1) has a hexagonal structure.