Hexagon socket bolt with end protection structure

By installing an internal hexagonal plate and reinforcing strip inside the head of the internal hexagonal bolt, and installing a reinforcing ring on the outside, a protective structure is formed using components such as magnetic rods and rings. This solves the problem of severe wear of traditional internal hexagonal bolts, achieving stronger protection and a longer service life.

CN224064660UActive Publication Date: 2026-03-31ZHEJIANG YIJIETE FASTENER MFG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-05-27
Publication Date
2026-03-31

AI Technical Summary

Technical Problem

Traditional hex socket head cap screws are prone to wear on the inside and outside of the wrench and the screw structure during use, resulting in severe wear and frequent replacement. They also lack an effective end protection structure.

Method used

An internal hexagonal plate and reinforcing strip are installed inside the bolt head, and a reinforcing ring is installed on the outside. A protective structure is formed by using components such as magnetic rods, rings, and fastening bolts. The bolt head is protected through magnetic attraction and threaded connection.

Benefits of technology

It provides strong protection, reduces wrench wear, extends bolt life, and facilitates replacement of the protective structure to maintain the protective effect.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an inside hexagonal bolt with an end protection structure, which comprises a threaded rod and a bolt head, the top of the threaded rod is fixedly connected with the bolt head, the inside of the bolt head is provided with an inside hexagonal groove, an inside hexagonal plate is embedded inside the inside hexagonal groove, the inner side of the inside hexagonal plate is connected with a reinforcing strip, and the inside of the inside hexagonal plate is connected with the end protection structure. The reinforcing strips are symmetrically distributed, and a reinforcing ring is installed on the outer portion of the bolt head. According to the inner hexagonal bolt with the end protection structure, an inner hexagonal plate and a reinforcing strip are installed in the bolt head, a reinforcing ring is installed outside the bolt head through a fastener, then the fastener is taken out, the reinforcing ring is installed outside the bolt head, after installation, ring body structures are taken out, and the two sides of the reinforcing ring are installed; in this way, the protection structure can be installed inside and outside the bolt head, and the protection effect is high when the protection structure is used.
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Description

Technical Field

[0001] This utility model belongs to the technical field of internal hexagon bolts, and particularly relates to an internal hexagon bolt with an end protection structure. Background Technology

[0002] A hex bolt is a fastener with a hexagonal head that requires an Allen wrench to tighten or loosen. It has a hexagonal hole inside and an external thread on the shank to engage with the internal thread on the connected part to achieve a fastening effect.

[0003] The following problems exist in the application of conventional hex socket head cap screws: When using traditional hex socket head cap screws, wrenches are usually needed for both installation and removal. However, prolonged use of wrenches can cause wear on the inner and outer sides of both the wrench and the hex socket head cap screw. When the wear becomes severe, the screw must be removed and replaced with a new one. Therefore, there is no protective structure installed at the end during use. Utility Model Content

[0004] The purpose of this utility model is to provide an internal hex bolt with an end protection structure to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the specific technical solution of this utility model is as follows: A hexagon socket head cap screw with an end protection structure includes a threaded shank and a bolt head. The bolt head is fixedly connected to the top of the threaded shank. An internal hexagonal groove is formed inside the bolt head. An internal hexagonal plate is embedded inside the internal hexagonal groove. A reinforcing strip is connected to the inner side of the internal hexagonal plate. The reinforcing strips are symmetrically distributed. A reinforcing ring is installed on the outside of the bolt head. A magnetic rod is provided on the side of the reinforcing ring. A ring body is sleeved on the outside of the magnetic rod. A metal groove is formed inside the ring body. The metal groove attracts the magnetic rod through magnetic force.

[0006] Preferably, a cross-shaped retaining groove is formed inside the internal hexagonal slot, and a cross-shaped retaining plate is provided at the bottom of the internal hexagonal plate. There are two sets of cross-shaped retaining plates, and the cross-shaped retaining plates are embedded inside the cross-shaped retaining groove.

[0007] Preferably, the reinforcing ring has a through hole inside, through which a fastening bolt passes, and the fastening bolts are symmetrically distributed.

[0008] Preferably, the bolt head has a threaded groove on its outside, and the fastening bolt is threadedly connected to the threaded groove.

[0009] Preferably, the outer side of the reinforcing ring has a positioning groove and a notch, the inside of the notch is inlaid with a reinforcing plate, the inner side of the reinforcing plate is provided with a positioning block, and the inside of the positioning groove is inlaid with a positioning block.

[0010] Preferably, the side of the reinforcing plate is provided with a magnetic absorbing sheet, and the side of the reinforcing ring is provided with a metal sheet, and the magnetic absorbing sheet attracts the metal sheet by magnetic force.

[0011] The internal hex bolt with end protection structure of this utility model has the following advantages:

[0012] This type of internal hexagon bolt with end protection structure protects the bolt head by installing an internal hexagonal plate and reinforcing strip inside the bolt head, and a reinforcing ring installed on the outside of the bolt head using fasteners. A ring body is installed on the outside of the reinforcing ring. Before using the bolt head, the operator removes the internal hexagonal plate and installs it in the internal hexagonal slot inside the bolt head. Then, the fastener is removed and the reinforcing ring is installed on the outside of the bolt head. After installation, the ring body structure is removed and installed on both sides of the reinforcing ring. In this way, the protective structure can be installed inside and outside the bolt head, providing strong protection during use. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the cross-shaped slot structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the magnetic chuck structure of this utility model;

[0017] Figure 4 For the present utility model Figure 3 Enlarged schematic diagram of part of the structure of A in the middle;

[0018] Figure 5 This is a schematic diagram of the ring structure of this utility model;

[0019] Figure 6 This is a schematic diagram of the positioning block structure of this utility model;

[0020] Figure 7 This is a schematic diagram of the cross-shaped card plate structure of this utility model.

[0021] The markings in the diagram are as follows: 1. Threaded rod; 2. Bolt head; 3. Socket hexagonal slot; 4. Cross retaining plate; 5. Cross retaining groove; 6. Socket hexagonal plate; 7. Reinforcing strip; 8. Reinforcing ring; 9. Notch; 10. Magnetic rod; 11. Metal groove; 12. Ring body; 13. Fastening bolt; 14. Threaded groove; 15. Positioning block; 16. Positioning groove; 17. Metal sheet; 18. Magnetic sheet; 19. Reinforcing plate; 20. Perforation. Detailed Implementation

[0022] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0023] In the description of the embodiments of this utility model, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0026] The following disclosure provides many different implementations or examples for different structures of the embodiments of the present invention. To simplify the disclosure of the embodiments of the present invention, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of the present invention; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0027] To better understand the purpose, structure, and function of this utility model, the following description, in conjunction with the accompanying drawings, provides a more detailed account of an internal hexagon bolt with an end protection structure.

[0028] like Figure 1-7 As shown, this utility model discloses an internal hexagon bolt with an end protection structure, comprising a threaded rod 1 and a bolt head 2. The bolt head 2 is fixedly connected to the top of the threaded rod 1. An internal hexagonal groove 3 is formed inside the bolt head 2. Due to the internal hexagonal groove 3, it is convenient to install an internal hexagonal plate 6 inside. The internal hexagonal plate 6 is embedded inside the internal hexagonal groove 3. Reinforcing strips 7 are connected to the inner side of the internal hexagonal plate 6. The reinforcing strips 7 are symmetrically distributed. A reinforcing ring 8 is installed on the outside of the bolt head 2. A magnetic suction rod 10 is provided on the side of the reinforcing ring 8. A ring body 12 is sleeved on the outside of the magnetic suction rod 10. A metal groove 11 is opened inside the body 12. The metal groove 11 is magnetically attracted to the magnetic rod 10. The internal hexagonal plate 6 and the reinforcing strip 7 are installed inside the bolt head 2, and the reinforcing ring 8 is installed on the outside of the bolt head 2 using fasteners. The ring body 12 is installed on the outside of the reinforcing ring 8. The operator takes out the internal hexagonal plate 6 and installs it in the internal hexagonal groove 3 inside the bolt head 2. Then, the fasteners are taken out and the reinforcing ring 8 is installed on the outside of the bolt head 2. After installation, the ring body 12 structure is taken out and installed on both sides of the reinforcing ring 8. In this way, the end protection effect is stronger when in use.

[0029] The interior of the internal hexagonal slot 3 has a cross-shaped retaining groove 5, and the bottom of the internal hexagonal plate 6 has a cross-shaped retaining plate 4. There are two sets of cross-shaped retaining plates 4. The cross-shaped retaining plates 4 are embedded in the interior of the cross-shaped retaining groove 5. By installing the cross-shaped retaining plates 4 and the cross-shaped retaining groove 5, it is convenient to install the internal hexagonal plate 6 inside the internal hexagonal slot 3.

[0030] A through hole 20 is made inside the reinforcing ring 8, and a fastening bolt 13 passes through the through hole 20. The fastening bolts 13 are symmetrically distributed. The through hole 20 facilitates the fastening bolts 13 to pass through the inside of the reinforcing ring 8.

[0031] A threaded groove 14 is provided on the outside of the bolt head 2. The fastening bolt 13 is threadedly connected to the threaded groove 14. Because of the threaded groove 14, it is easy to tighten the fastening bolt 13 to install and fix the reinforcing ring 8 on the outside of the bolt head 2.

[0032] A positioning groove 16 and a notch 9 are provided on the outer side of the reinforcing ring 8. A reinforcing plate 19 is inlaid inside the notch 9. A positioning block 15 is provided on the inner side of the reinforcing plate 19. The positioning block 15 is inlaid inside the positioning groove 16. By installing the positioning block 15 and the positioning groove 16, it is convenient to splice the reinforcing plate 19 and the reinforcing plate.

[0033] The side of the reinforcing plate 19 is provided with a magnetic absorbing piece 18, and the side of the reinforcing ring 8 is provided with a metal piece 17. The magnetic absorbing piece 18 magnetically attracts the metal piece 17. By installing the magnetic absorbing piece 18 and the metal piece 17, the reinforcing plate 19 can be installed on the inner side of the reinforcing ring 8 by means of strong ferromagnetic attraction.

[0034] The working principle of this hexagon socket head cap screw with end protection structure is as follows: When using this screw, first hold the threaded rod 1 and move the bolt body to the table. However, in order to protect the end of the threaded rod 1 and prevent deformation caused by prolonged tightening of the bolt, an internal hexagon plate 6 and a reinforcing strip 7 are installed inside the bolt head 2, and a reinforcing ring 8 is installed outside the bolt head 2. The reinforcing ring 8 has a fastening bolt 13 installed inside, and a magnetic suction rod 10 is provided on the outside of the reinforcing ring 8. A ring body 12 is sleeved on the outside of the magnetic suction rod 10. Before using the bolt head 2, the operator takes out the internal hexagon plate 6 and installs it in the internal hexagon slot 3 inside the bolt head 2, so that the cross retainer 4 is embedded in the cross. Inside the card slot 5, take out the fastening bolt 13 and install the reinforcing ring 8 on the outside of the bolt head 2. After installation, the staff takes out the ring body 12 structure and embeds the metal rod in the magnetic groove. In this way, the protective structure can be installed inside and outside the bolt head 2, which has a strong protective effect during use. At the same time, take out the reinforcing plate 19 and embed the positioning block 15 on the inside of the reinforcing plate 19 into the positioning groove 16. At the same time, the magnetic plate 18 on the side uses magnetic force to attract the metal plate 17, so that the reinforcing plate 19 can be installed on the inside of the reinforcing ring 8. Finally, after a long period of use, when the protective structure is damaged, the staff takes out the new protective structure and reinstalls it on the outside of the bolt head 2.

[0035] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A hexagonal socket bolt with end protection structure, comprising a threaded rod (1) and a bolt head (2), the top of the threaded rod (1) is fixedly connected with the bolt head (2), characterized in that: The inside of the bolt head (2) is provided with an internal hexagonal groove (3), the internal hexagonal groove (3) is inlaid with an internal hexagonal plate (6), the inner side of the internal hexagonal plate (6) is connected with a reinforcing strip (7), the reinforcing strip (7) is symmetrically distributed, the outside of the bolt head (2) is provided with a reinforcing ring (8), the side of the reinforcing ring (8) is provided with a magnetic suction rod (10), the outside of the magnetic suction rod (10) is sleeved with a ring body (12), the inside of the ring body (12) is provided with a metal groove (11), and the metal groove (11) is magnetically adsorbed with the magnetic suction rod (10).

2. The hex socket head cap screw with end protection structure according to claim 1, characterized in that: The internal hexagonal groove (3) is internally provided with a cross clamping groove (5), the bottom of the internal hexagonal plate (6) is provided with a cross clamping plate (4), the number of the cross clamping plate (4) is two, and the cross clamping plate (4) is inlaid in the cross clamping groove (5).

3. The hex head bolt with end protection structure according to claim 1, characterized in that: The inside of the reinforcing ring (8) is provided with a perforation (20), the perforation (20) is internally penetrated by a fastening bolt (13), and the fastening bolt (13) is symmetrically distributed.

4. The hex head bolt with end protection structure according to claim 3, characterized in that: The outside of the bolt head (2) is provided with a threaded groove (14), and the fastening bolt (13) is threadedly connected with the threaded groove (14).

5. The hex head bolt with end protection structure according to claim 4, characterized in that: The outside of the reinforcing ring (8) is provided with a positioning groove (16) and a notch (9), the inside of the notch (9) is inlaid with a reinforcing plate (19), the inner side of the reinforcing plate (19) is provided with a positioning block (15), and the inside of the positioning groove (16) is inlaid with the positioning block (15).

6. The hex head bolt with end protection structure according to claim 5, characterized in that: The side of the reinforcing plate (19) is provided with a magnetic suction piece (18), the side of the reinforcing ring (8) is provided with a metal sheet (17), and the magnetic suction piece (18) is magnetically adsorbed with the metal sheet (17).