Fixed-torsion locking screw

Abstract

The utility model relates to the technical field of screws, in particular to a fixed-torsion locking screw. According to the technical scheme, the fixed-torque locking screw comprises a first screw body and a mounting hole which is formed in a product and used for clamping the first screw body, and further comprises a tightening mechanism which is arranged in the first screw body, enables the fixed-torque locking screw to be firmly connected with the product after being tightened and avoids loosening; the pair of telescopic grooves is formed in the first screw body, and an insertion block mechanism used for enabling the fixed-torsion locking screw to be disengaged from a product is arranged in each telescopic groove. According to the fixed-torque locking screw, the first screw body, the second screw head, the third screw body, the tightening mechanism, the insertion block mechanism and other structures are matched, so that the fixed-torque locking screw can be disassembled and repeatedly used, and the maintenance cost and time can be reduced. Meanwhile, in the assembling process of the fixed-torsion locking screw which is allowed to be disassembled and repeatedly used, disassembly and reinstallation are more flexible when errors occur or parts need to be adjusted, and therefore unnecessary waste is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of screws, in particular to a fixed torque locking screw. Background Art

[0002] Screws are a common mechanical connector, which are usually made of metal and have a threaded structure. Screws are usually used to fix two or more parts together. The screws are rotated to make their threads match the holes or threads of the parts to achieve the tightening effect. During the use of traditional screws, the tightening force is reduced or loosened due to factors such as loosening, which affects the service life and safety of the product. In order to solve this problem, fixed torque locking screws are used. Fixed torque locking screws are special threaded fasteners that need to be tightened according to certain torque standards when used. Unlike ordinary screws, fixed torque locking screws will automatically lock after reaching the predetermined torque value to prevent loosening due to vibration or other reasons. However, in order to achieve the locking function, fixed torque locking screws are designed to apply greater pressure to the threads. When disassembling, additional force needs to be applied to overcome the locking mechanism, which will cause damage or wear to the threads, making the threads unusable again. Utility Model Content

[0003] The utility model aims to provide a fixed torque locking screw in view of the problems existing in the background technology.

[0004] The technical solution of the utility model: a fixed torque locking screw, including a first nail body and a mounting hole provided on a product for the first nail body to be inserted into, and also including: a tightening mechanism arranged in the first nail body and capable of firmly connecting the fixed torque locking screw to the product and preventing loosening after being tightened; a pair of telescopic grooves provided on the first nail body, wherein an insert block mechanism is provided inside the telescopic groove for allowing the fixed torque locking screw to be disengaged from the product.

[0005] Optionally, the tightening mechanism includes a second nail head slidably connected to the first nail body, one end of the second nail head is fixedly connected to the second nail body, the interior of the first nail body is fixedly connected to a spiral sleeve block spirally connected to the second nail body, the end of the second nail body away from the second nail head is fixedly connected to a connecting rod, and the end of the connecting rod away from the second nail body is fixedly connected to a third nail body spirally connected to the product.

[0006] Optionally, the tightening mechanism includes a pointed cone block slidably connected in the telescopic groove, and the pointed cone block is fixedly connected to an end close to the connecting rod with a butt for being sucked by the connecting rod, and the second nail body is close to the connecting rod and abuts against the butt to make the pointed cone block automatically move outside the first nail body.

[0007] Optionally, the tightening mechanism further comprises a pair of slots on the second nail body for the end of the butt head to be inserted into.

[0008] Optionally, a first nail head is fixedly connected to the top of the first nail body, a circular groove is formed on the first nail head, and a tightening groove is formed inside the circular groove for the tightening mechanism to slide.

[0009] Optionally, a hexagonal groove for inserting a tool is formed at one end of the second nail head away from the second nail body.

[0010] Compared with the prior art, the utility model has the following beneficial technical effects:

[0011] The utility model utilizes the cooperation of the first nail body, the second nail head, the third nail body, the tightening mechanism and the inserting block mechanism to enable the fixed torque locking screw to be disassembled and reused, thereby reducing maintenance costs and time. At the same time, the fixed torque locking screw that allows disassembly and reuse is more flexible to disassemble and reinstall when errors occur during assembly or when parts need to be adjusted, thereby preventing unnecessary waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A structural schematic diagram of a fixed torque locking screw of the utility model is given;

[0013] Figure 2 for Figure 1 A schematic cross-sectional structure diagram of ;

[0014] Figure 3 for Figure 2 Schematic diagram of part of the structure.

[0015] Figure numerals: 1, first nail head; 11, circular groove; 12, elastic slide groove; 2, first nail body; 21, spiral sleeve block; 22, telescopic groove; 23, pointed cone block; 24, butt; 3, second nail head; 31, second nail body; 32, slot; 33, connecting rod; 34, third nail body; 35, hexagonal groove. DETAILED DESCRIPTION

[0016] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.

[0017] The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0018] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0019] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0020] It should be noted that the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] Example

[0023] like Figure 1-3 As shown, a fixed torque locking screw proposed by the utility model includes a first nail body 2 and a mounting hole provided on the product for the first nail body 2 to be inserted into, and also includes: a tightening mechanism arranged in the first nail body 2, which can firmly connect the fixed torque locking screw to the product and prevent loosening after being tightened; a pair of telescopic grooves 22 provided on the first nail body 2, and an insert block mechanism for allowing the fixed torque locking screw to be disengaged from the product is provided inside the telescopic groove 22.

[0024] Furthermore, the tightening mechanism includes a second nail head 3 slidably connected to the first nail body 2, and a hexagonal groove 35 for tool insertion is provided at one end of the second nail head 3 away from the second nail body 31. The hexagonal groove 35 is a common screw head shape and is used in conjunction with a hexagonal wrench or a spanner. One end of the second nail head 3 is fixedly connected to the second nail body 31, and the interior of the first nail body 2 is fixedly connected to a spiral sleeve block 21 spirally connected to the second nail body 31. The end of the second nail body 31 away from the second nail head 3 is fixedly connected to a connecting rod 33. The material of the connecting rod 33 is provided with a magnet, and its function is to make the butt 24 automatically move toward the connecting rod 33 along the telescopic slot 22 through the suction force of the connecting rod 33 when the butt 24 is not resisted. The end of the connecting rod 33 away from the second nail body 31 is fixedly connected to the third nail body 34 spirally connected to the product. The tightening mechanism also includes a pair of slots 32 on the second nail body 31 for the ends of the butt head 24 to be inserted into. The function of the slot 32 is to prevent the second nail body 31 from rotating freely inside the first nail body 2 after being inserted by the butt head 24, thereby preventing the first nail body 2 from loosening from the mounting hole of the product.

[0025] The tightening mechanism includes a pointed cone block 23 slidably connected in the telescopic groove 22. The pointed cone block 23 is used to insert the product, so that the first nail body 2 is fixed in the mounting hole on the product and cannot rotate. The end of the pointed cone block 23 close to the connecting rod 33 is fixedly connected with a butt 24 for being attracted by the connecting rod 33. The material of the butt 24 is a metal that can be attracted by a magnet. The end of the second nail body 31 close to the connecting rod 33 abuts against the butt 24 to make the pointed cone block 23 automatically move out of the first nail body 2.

[0026] Furthermore, a first nail head 1 is fixedly connected to the top of the first nail body 2 , a circular groove 11 is formed on the first nail head 1 , and a tightening groove 12 for the tightening mechanism to slide is formed inside the circular groove 11 .

[0027] In this embodiment, when a fixed torque locking screw is required, such as Figure 1As shown, a mounting hole for inserting the first nail body 2 is firstly opened on the product, and then the first nail body 2 is inserted into the mounting hole. Then a tool is used to insert into the hexagonal groove 35 on the second nail head 3, and the tool is started to drive the second nail head 3 to rotate. After the second nail head 3 rotates, it drives the second nail body 31, the slot 32, the connecting rod 33 and the third nail body 34 in sequence. Since the third nail body 34 is spirally connected to the product, the third nail body 34 is inserted into the product and drives the connecting rod 33, the slot 32, the second nail body 31 and the second nail head 3 to move in the direction of the telescopic slot 22. At this time, the second nail body 31 abuts against the abutting heads 24 in a pair of telescopic slots 22, so that the abutting heads 24 push the pointed cone block 23 into the product until the second nail body 31 is tightened according to a certain torque, and the end of the abutting head 24 away from the pointed cone block 23 will be stuck in the slot 32 on the second nail body 31, thereby preventing the second nail body 31 from rotating freely in the first nail body 2, and thus preventing the first nail body 2 from loosening in the product. When the first nail body 2 needs to be removed from the product, it is only necessary to use a tool to rotate the second nail head 3 so that the slot 32 on the second nail body 31 disengages from one end of the abutment 24 and the third nail body 34 is removed from the product. The first nail body 2 can be removed from the mounting hole of the product. It is simple and easy to operate.

[0028] The preferred embodiments of the utility model of the above utility model are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A fixed torque locking screw, comprising a first nail body (2) and a mounting hole provided on a product for the first nail body (2) to be inserted into, characterized in that: Also includes: A tightening mechanism is arranged in the first nail body (2) and is used to firmly connect the fixed torque locking screw to the product and prevent loosening after being tightened; A pair of telescopic grooves (22) are provided on the first nail body (2), and an inserting block mechanism is provided inside the telescopic grooves (22) for allowing the fixed torque locking screw to be disengaged from the product.

2. A fixed torque locking screw according to claim 1, characterized in that: The tightening mechanism comprises a second nail head (3) slidably connected inside the first nail body (2); one end of the second nail head (3) is fixedly connected to the second nail body (31); the interior of the first nail body (2) is fixedly connected to a spiral sleeve block (21) spirally connected to the second nail body (31); one end of the second nail body (31) away from the second nail head (3) is fixedly connected to a connecting rod (33); and one end of the connecting rod (33) away from the second nail body (31) is fixedly connected to a third nail body (34) spirally connected to the product.

3. A fixed torque locking screw according to claim 2, characterized in that: The tightening mechanism comprises a pointed cone block (23) slidably connected in the telescopic groove (22); one end of the pointed cone block (23) close to the connecting rod (33) is fixedly connected to a butt head (24) for being sucked by the connecting rod (33); and one end of the second nail body (31) close to the connecting rod (33) butts against the butt head (24) to automatically move the pointed cone block (23) outward of the first nail body (2).

4. A fixed torque locking screw according to claim 1, characterized in that: The tightening mechanism further comprises a pair of slots (32) formed on the second nail body (31) for the ends of the butt heads (24) to be inserted into.

5. The fixed torque locking screw according to claim 1, characterized in that: A first nail head (1) is fixedly connected to the top of the first nail body (2), a circular groove (11) is provided on the first nail head (1), and a tightening groove (12) for the tightening mechanism to slide is provided inside the circular groove (11).

6. A fixed torque locking screw according to claim 2, characterized in that: An end of the second nail head (3) away from the second nail body (31) is provided with a hexagonal groove (35) for inserting a tool.

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