Screw with sawteeth

Abstract

The utility model relates to the technical field of screw assemblies, in particular to a sawtooth screw which comprises a bolt, a square groove is formed in the surface of the bolt, a lead screw is installed on the other side of the bolt, sawteeth are arranged on the surface of the lead screw, a reinforcing part is installed on the surfaces of the sawteeth, and a sleeve rod is installed below the reinforcing part. A reinforcing part comprises a first circular block installed on one side of a bolt, an upper cam is installed on the right side of the first circular block, a second circular block is installed on the sawtooth surface of the right side of the upper cam, and a lower cam is installed on the surface of the second circular block. When the first circular block and the upper cam rotate, the second circular block and the lower cam which are meshed with the first circular block and the upper cam can be slowly reinforced to enable the screw to be firmer, and the sleeve rod is expanded towards the periphery through acting force when the bolt rotates downwards, so that the bolt is fixed more firmly, and the service time is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of screw assembly technology, specifically a serrated screw. Background Technology

[0002] Screws, also known as screws or bolts, are widely used in many fields such as manufacturing, construction, home decoration, electronic equipment and electrical appliance manufacturing.

[0003] A search revealed an existing patent (publication number: CN214661345U) that discloses a self-locking bolt assembly, including a screw and a nut connected to the screw via an internal thread. The screw includes a head, a threaded portion, and a pin tail arranged sequentially, with a cutting groove between the threaded portion and the pin tail. The nut is threaded onto the threaded portion of the screw. A sleeve is movably fitted onto the screw and located between the head of the screw and the nut. One end face of the sleeve contacts one end face of the nut. The outer surface of the screw head near the sleeve end is a tapered surface, and the inner surface of the sleeve near the screw head end is a tapered surface that mates with the tapered surface of the screw head. However, when using this bolt assembly, with the nut connected to the threaded portion of the screw, the nut is prone to loosening in case of emergencies, increasing the likelihood of the nut falling off.

[0004] Therefore, it is necessary to propose a solution for screw assemblies to address the aforementioned problems. Utility Model Content

[0005] The purpose of this invention is to provide a serrated screw to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A serrated screw includes a bolt, the bolt surface having a square groove, a lead screw mounted on the other side of the bolt, the lead screw surface having serrations, a reinforcing part mounted on the serrated surface, and a sleeve rod mounted below the reinforcing part.

[0008] Furthermore, the reinforcing part includes a first circular block installed on one side of the bolt, an upper cam installed on the right side of the first circular block, a second circular block installed on the serrated surface on the right side of the upper cam, and a lower cam installed on the surface of the second circular block.

[0009] Furthermore, a cross groove is formed within the square groove.

[0010] Furthermore, the upper and lower cams are reinforced by rotational engagement.

[0011] Furthermore, the surface of the saw teeth is coated with an anti-rust coating.

[0012] Furthermore, the sleeve rod has vertical grooves on its surface.

[0013] Furthermore, the bolts, lead screws, and saw teeth are made of stainless steel.

[0014] Compared with the prior art, the technical effects and advantages of this utility model are as follows: This utility model provides a serrated screw, which includes a first circular block installed on one side of the bolt, an upper cam installed on the right side of the first circular block, a second circular block installed on the serrated surface of the right side of the upper cam, and a lower cam installed on the surface of the second circular block. In use, by rotating the bolt, the first circular block and the upper cam connected to it are driven. When the first circular block and the upper cam rotate, the second circular block and the lower cam that mesh with them will slowly strengthen the screw, making it more secure. In addition, the sleeve rod will expand outwards by force when the bolt rotates downwards, making the bolt more securely fixed and extending its service life. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a right view of the present invention;

[0017] Figure 3 This is an axonometric view of the present invention;

[0018] Figure 4 This is the left view of the present invention.

[0019] In the diagram: 1. Bolt; 2. Square groove; 3. Cross groove; 4. Lead screw; 5. Serrated edge; 61. First circular block; 62. Upper cam; 63. Second circular block; 64. Lower cam; 7. Sleeve rod; 8. Vertical groove; 9. Anti-rust coating. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be noted that the terms "upper end," "lower end," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for 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 this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved with," "connected," etc., should be interpreted broadly. For example, "connection" 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 an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Please see Figures 1 to 4 This utility model provides a technical solution:

[0024] A serrated screw includes a bolt 1, a square groove 2 on the surface of the bolt 1, a lead screw 4 on the other side of the bolt 1, serrations 5 on the surface of the lead screw 4, a reinforcing part 6 on the surface of the serrations 5, and a sleeve rod 7 below the reinforcing part 6.

[0025] In the specific implementation process, such as Figure 1 The reinforcement part 6 shown includes a first circular block 61 installed on one side of the bolt 1, an upper cam 62 installed on the right side of the first circular block 61, a second circular block 63 installed on the right side surface of the upper cam 62 with serrations 5, and a lower cam 64 installed on the surface of the second circular block 63.

[0026] It should be noted that a first circular block 61 is installed on one side of bolt 1. An upper cam 62 is installed on the right side of the first circular block 61. A second circular block 63 is installed on the right side surface of the upper cam 62 with serrated teeth 5. A lower cam 64 is installed on the surface of the second circular block 63. When the operator rotates bolt 1, the first circular block 61 and the upper cam 62 connected to it will be driven. When the first circular block 61 and the upper cam 62 rotate, the second circular block 63 and the lower cam 64 that mesh with them will slowly tighten, making bolt 1 more secure.

[0027] In the specific implementation process, such as Figure 1The square groove 2 shown has a cross groove 3.

[0028] It should be noted that the square groove 2 has a cross groove 3, and the square groove 2 and the cross groove 3 can be used to reinforce the bolt 1 with different tools, which is very versatile.

[0029] In the specific implementation process, such as Figure 2 The upper cam 62 and lower cam 64 shown are reinforced by rotational engagement.

[0030] It should be noted that the upper cam 62 and the lower cam 64 are reinforced by rotational engagement.

[0031] In the specific implementation process, such as Figure 4 The surface of the saw teeth 5 shown is coated with an anti-rust coating 9.

[0032] It should be noted that the surface of the saw teeth 5 is coated with an anti-rust coating 9, which can effectively protect the device from corrosion by air or moisture and extend its service life.

[0033] In the specific implementation process, such as Figure 1 The sleeve rod 7 shown has a vertical groove 8 on its surface.

[0034] It should be noted that the sleeve rod 7 has a vertical groove 8 on its surface. The vertical groove 8 can disperse the force on the sleeve rod 7 and can also effectively protect the lead screw 4 and saw teeth 5 from foreign objects entering from the outside.

[0035] In the specific implementation process, such as Figure 3 The bolt 1, threaded rod 4, and saw teeth 5 shown are made of stainless steel.

[0036] It should be noted that the bolt 1, lead screw 4, and saw teeth 5 are made of stainless steel.

[0037] The working principle of this embodiment is as follows: In specific use, the operator rotates the bolt 1, thereby driving the first circular block 61 and the upper cam 62 connected to it. When the first circular block 61 and the upper cam 62 rotate, the second circular block 63 and the lower cam 64 that mesh with them will slowly tighten, making the bolt 1 more secure. When the bolt 1 rotates downward, the sleeve rod 7 will expand outward through the force, making the bolt 1 more secure and extending the service life.

[0038] The remaining parts not described in this utility model are existing or known technologies.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A serrated screw, characterized in that, Includes a bolt (1), the surface of the bolt (1) is provided with a square groove (2), a screw rod (4) is installed on the other side of the bolt (1), the surface of the screw rod (4) is provided with serrations (5), a reinforcing part (6) is installed on the surface of the serrations (5), and a sleeve rod (7) is installed below the reinforcing part (6); The reinforcing part (6) includes a first circular block (61) installed on one side of the bolt (1), an upper cam (62) installed on the right side of the first circular block (61), a second circular block (63) installed on the right side of the upper cam (62) with a serrated (5) surface, and a lower cam (64) installed on the surface of the second circular block (63).

2. A serrated screw according to claim 1, characterized in that, A cross groove (3) is provided inside the square groove (2).

3. A serrated screw according to claim 1, characterized in that, The upper cam (62) and lower cam (64) are reinforced by rotational engagement.

4. A serrated screw according to claim 1, characterized in that, The surface of the saw teeth (5) is coated with an anti-rust coating (9).

5. A serrated screw according to claim 1, characterized in that, The sleeve rod (7) has a vertical groove (8) on its surface.

6. A serrated screw according to claim 1, characterized in that, The bolt (1), lead screw (4), and saw teeth (5) are made of stainless steel.

Images