Wear-resistant double-thread screw

Abstract

The utility model relates to the technical field of double-thread screws, in particular to a wear-resistant double-thread screw. The wear-resistant double-thread screw comprises a double-thread screw body, an inner hexagonal groove is formed in the top of the double-thread screw body, the front side and the rear side of the inner side wall of the inner hexagonal groove are each provided with a set of positioning grooves, and a fixing assembly is placed in the inner hexagonal groove; when the double-thread screw is installed, the hexagonal block is pulled upwards to be separated from the inner hexagonal groove of the double-thread screw, at the moment, an external hexagonal wrench can be inserted into the inner hexagonal groove of the double-thread screw to rotate, the double-thread screw can be driven to rotate, threaded connection and fixed installation of the double-thread screw and an external threaded hole are completed, and therefore when the double-thread screw is installed, the double-thread screw can be screwed into the external threaded hole. The threads on the outer surface of the double-thread screw cannot be additionally worn, so that the wear resistance of the threads of the double-thread screw is improved; the hexagonal block is inserted into the inner hexagonal groove of the double-thread screw, and the inner hexagonal groove of the double-thread screw is filled with the hexagonal block, so that the supporting strength of the whole double-thread screw is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of double-ended screw technology, specifically a wear-resistant double-ended screw. Background Technology

[0002] Double-ended studs are commonly used fasteners, generally used to connect two parts with a large distance between them. Due to the special shape of the double-ended stud, a special sleeve needs to be used to fit onto the upper stud to make it rotate. Therefore, the upper thread is easily damaged during installation, which affects its wear resistance. To address this issue, we have made technical innovations based on the existing double-ended studs. Utility Model Content

[0003] The purpose of this invention is to provide a wear-resistant double-ended screw to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a wear-resistant double-ended screw, comprising:

[0005] A double-ended screw has an internal hexagonal groove at its top. The internal hexagonal groove has a set of positioning grooves on both the front and rear sides of its inner wall. A fixing component is placed within the internal hexagonal groove. The fixing component includes a hexagonal block. The top of the hexagonal block has an easy-pull groove containing a pull rod. A magnet is embedded in the bottom of the hexagonal block. A set of mounting holes is provided on both the front and rear sides of the hexagonal block, and springs are installed within these mounting holes. A set of round-headed pins is provided on the opposite sides of both sets of springs.

[0006] Preferably, the top of the pull rod is flush with the top of the hexagonal block, and the rounded part of the rounded pin is located on the outside of the hexagonal block.

[0007] Preferably, the hexagonal block is disposed in the internal hexagonal groove of the double-ended screw, and the outer side wall of the hexagonal block is in contact with the inner side wall of the internal hexagonal groove of the double-ended screw.

[0008] Preferably, the top of the hexagonal block is flush with the top of the double-ended screw, and the rounded part of the rounded pin is inserted into the positioning groove of the hexagonal block.

[0009] Preferably, the bottom of the magnetic block is in contact with the bottom of the internal hexagonal groove of the double-ended screw, and the magnetic block and the double-ended screw are magnetically attracted to each other.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] In this invention, the hexagonal block is pulled upwards to separate from the internal hexagonal groove of the double-ended screw. At this point, an external hexagonal wrench can be inserted into the internal hexagonal groove of the double-ended screw and rotated, thereby driving the double-ended screw to rotate and completing the screw connection and fixing installation between the double-ended screw and the external threaded hole. This prevents the threads on the surface of the double-ended screw from being subjected to additional wear during installation, thereby improving the wear resistance of the double-ended screw threads.

[0012] After the double-ended screw is installed, insert the hexagonal block into the internal hexagonal slot of the double-ended screw. The spring drives the round-headed pin into the positioning hole of the double-ended screw. With the magnetic attraction of the magnetic block on the double-ended screw, the hexagonal block can be stably fixed in the internal hexagonal slot of the double-ended screw. The hexagonal block fills the internal hexagonal slot of the double-ended screw, thereby ensuring the support strength of the entire double-ended screw. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a wear-resistant double-ended screw according to the present invention;

[0014] Figure 2 This is a right-side sectional view of a wear-resistant double-ended screw according to this utility model;

[0015] Figure 3 This utility model Figure 2 Enlarged view of part A.

[0016] In the diagram: 1. Double-ended screw; 11. Hexagonal block; 12. Pull rod; 13. Magnetic block; 14. Spring; 15. Round-headed pin. Detailed Implementation

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] Please see Figures 1-3A wear-resistant double-ended screw includes a double-ended screw 1. The top of the double-ended screw 1 has an internal hexagonal groove. A set of positioning grooves is formed on both the front and rear sides of the inner wall of the internal hexagonal groove. A fixing component is placed within the internal hexagonal groove. The fixing component includes a hexagonal block 11. The top of the hexagonal block 11 has an easy-pull groove, within which a pull rod 12 is fixedly installed. A magnet 13 is embedded in the bottom of the hexagonal block 11. A set of mounting holes is formed on both the front and rear sides of the hexagonal block 11, within which a spring 14 is fixedly installed. Each of the two sets of springs 14 has a set of round-headed pins 15 fixedly installed on its opposite sides. The top of the pull rod 12 is flush with the top of the hexagonal block 11. The round head of the pin 15 is located on the outside of the hexagonal block 11. The hexagonal block 11 is slidably installed in the internal hexagonal groove of the double-ended screw 1. Pulling the pull rod 12 upward will cause the hexagonal block 11 to move upward and separate from the internal hexagonal groove of the double-ended screw 1. At this time, an external hexagonal wrench can be inserted into the internal hexagonal groove of the double-ended screw 1 to rotate it, thereby driving the double-ended screw 1. The screw 1 rotates to complete the screw connection and fixation between the double-ended screw 1 and the external threaded hole. This prevents the threads of the double-ended screw 1 from undergoing additional wear during installation, thereby improving the wear resistance of the threads. The outer wall of the hexagonal block 11 fits against the inner wall of the internal hexagonal groove of the double-ended screw 1, and the top of the hexagonal block 11 is flush with the top of the double-ended screw 1. The round head of the round-headed pin 15 is inserted into the positioning groove of the hexagonal block 11, and the bottom of the magnetic block 13 is flush with the inner wall of the double-ended screw 1. The bottoms of the hexagonal slots fit together, and the magnetic block 13 and the double-ended screw 1 are magnetically attracted to each other. After the double-ended screw 1 is installed, the hexagonal block 11 is inserted into the inner hexagonal slot of the double-ended screw 1. The spring 14 drives the round-headed pin 15 to be inserted into the positioning hole of the double-ended screw 1. With the magnetic attraction of the magnetic block 13 on the double-ended screw 1, the hexagonal block 11 can be stabilized in the inner hexagonal slot of the double-ended screw 1. The hexagonal block 11 fills the inner hexagonal slot of the double-ended screw 1, thereby ensuring the support strength of the entire double-ended screw 1.

[0019] Working principle: Pulling the lever 12 upwards will cause the hexagonal block 11 to move upwards and separate from the internal hexagonal slot of the double-ended screw 1. At this time, an external hexagonal wrench can be inserted into the internal hexagonal slot of the double-ended screw 1 and rotated, thereby driving the double-ended screw 1 to rotate and completing the screw connection and fixing of the double-ended screw 1 to the external threaded hole. This prevents the threads of the double-ended screw 1 from being subjected to additional wear during installation, thereby improving the wear resistance of the threads of the double-ended screw 1. After the double-ended screw 1 is installed, the hexagonal block 11 is inserted into the internal hexagonal slot of the double-ended screw 1. The spring 14 drives the round-headed pin 15 to be inserted into the positioning hole of the double-ended screw 1. With the magnetic attraction of the magnetic block 13, the hexagonal block 11 can be stabilized in the internal hexagonal slot of the double-ended screw 1. The hexagonal block 11 fills the internal hexagonal slot of the double-ended screw 1, thereby ensuring the support strength of the entire double-ended screw 1.

Claims

1. A wear-resistant double-ended screw, characterized in that, include: A double-ended screw (1) has an internal hexagonal groove at its top. A set of positioning grooves is provided on both the front and rear sides of the inner wall of the internal hexagonal groove. A fixing component is placed in the internal hexagonal groove. The fixing component includes a hexagonal block (11). An easy-pull groove is provided on the top of the hexagonal block (11). A pull rod (12) is provided in the easy-pull groove. A magnetic block (13) is embedded in the bottom of the hexagonal block (11). A set of mounting holes is provided on both the front and rear sides of the hexagonal block (11). A spring (14) is provided in the mounting hole. A set of round-headed pins (15) is provided on the opposite sides of the two sets of springs (14).

2. The wear-resistant double-ended screw according to claim 1, characterized in that: The top of the pull rod (12) is flush with the top of the hexagonal block (11), and the round head of the round head pin (15) is located outside the hexagonal block (11).

3. The wear-resistant double-ended screw according to claim 2, characterized in that: The hexagonal block (11) is set in the inner hexagonal groove of the double-ended screw (1), and the outer side wall of the hexagonal block (11) is in contact with the inner side wall of the inner hexagonal groove of the double-ended screw (1).

4. The wear-resistant double-ended screw according to claim 2, characterized in that: The top of the hexagonal block (11) is flush with the top of the double-headed screw (1), and the round head of the round head pin (15) is inserted into the positioning groove of the hexagonal block (11).

5. A wear-resistant double-ended screw according to claim 2, characterized in that: The bottom of the magnetic block (13) is in contact with the bottom of the internal hexagonal groove of the double-ended screw (1), and the magnetic block (13) and the double-ended screw (1) are magnetically attracted to each other.

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