Segmented threaded fastening screw

Abstract

The utility model relates to a segmented thread fastening screw, and aims to solve the technical problem that the replacement cost is increased because the whole screw needs to be replaced to not influence the subsequent fastening effect when threads on the surface of the screw are abraded because the conventional screw is generally integrally formed, the segmented thread fastening screw comprises a screw body, and a clamping structure is arranged in the screw body; the screw body comprises a screw head, a first screw rod is fixedly connected to the lower end of the screw head, a second screw rod is attached to the bottom of the first screw rod, through holes are formed in the middle ends of the interiors of the first screw rod and the second screw rod, and two sets of guide grooves are evenly distributed in the peripheries of the through holes. An integrally-formed screw is changed into the screw capable of being assembled and disassembled, local disassembly and replacement of the screw are effectively achieved, the replacement cost is reduced, the first screw and the second screw as well as the second screw and the pointed end can be rapidly assembled conveniently through matching and clamping of the first guide rod, the second guide rod and the guide groove, and the assembly efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of screw fasteners, in particular to a segmented thread fastening screw. Background Art

[0002] Screw refers to a screw, which is a tool that uses the physics and mathematical principles of the inclined circular rotation of an object and the friction force to gradually tighten objects and parts.

[0003] When the screws are in use, they are very likely to come into contact with the devices they need to be fastened and become worn. Therefore, when the screws are worn, they need to be replaced in time to prevent them from loosening and falling off, thereby reducing subsequent impacts.

[0004] Existing screws are often formed in one piece, so when the thread on the surface of the screw is worn, in order not to affect the subsequent tightening effect, the entire screw needs to be replaced, which increases the replacement cost. In view of this, we propose a segmented thread tightening screw. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art, meet actual needs, and provide a segmented thread fastening screw to solve the technical problem that the existing screws are often formed in one piece. Therefore, when the thread on the surface of the screw is worn, the entire screw needs to be replaced in order not to affect the subsequent fastening effect, thereby increasing the replacement cost.

[0006] In order to achieve the purpose of the utility model, the technical solution adopted by the utility model is: designing a segmented thread fastening screw, including a screw body, wherein a clamping structure is provided inside the screw body;

[0007] The screw body includes a screw head, a first screw rod is fixedly connected to the lower end of the screw head, a second screw rod is attached to the bottom of the first screw rod, through holes are opened at the middle ends of the first screw and the second screw, two groups of guide grooves are evenly distributed on the periphery of the through hole, two groups of first guide rods are arranged on the top of the second screw, a limiting rod passes through the inside of the through hole, a pointed head is fixedly connected to the bottom of the limiting rod, two groups of second guide rods are evenly distributed on the periphery of the limiting rod, and the second guide rod is fixedly connected to the pointed head.

[0008] Preferably, the first guide rod and the second guide rod have the same shape and structure, and the first guide rod and the second guide rod are matched and engaged with the guide groove.

[0009] Preferably, the length of the limiting rod is greater than the total length of the first screw rod and the second screw rod, and one end of the limiting rod away from the pointed head is engaged with the inside of the screw head.

[0010] Preferably, the clamping structure includes a movable block, which is engaged with the inside of the screw head, and a buckle groove is provided inside the movable block. A clamping rod is connected to one side of the movable block, and a limiting ring frame is fixedly connected to the surface of the clamping rod, a spring is movablely sleeved on the surface of the clamping rod, and limiting grooves are provided on the outside of the limiting ring frame and the spring.

[0011] Preferably, one end of the clamping rod away from the movable block is inserted into the limiting rod, and the length of the portion of the clamping rod inserted into the limiting rod is slightly greater than the length of the movable block.

[0012] Preferably, the limiting ring frame forms an elastic structure through a spring and a limiting groove, and the limiting groove and the screw head are integrally formed.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model effectively realizes the partial disassembly and replacement of the screw by changing the integrally formed screw into an assembleable and detachable screw, thereby reducing the replacement cost. The matching engagement of the first guide rod, the second guide rod and the guide groove facilitates the rapid assembly of the first screw rod and the second screw rod, and the second screw rod and the pointed head, thereby improving the assembly efficiency.

[0015] 2. In the utility model, when it is necessary to partially disassemble the screw body, the buckle groove is buckled to pull the movable block outward. At this time, the clamping rod and the limiting ring frame are effectively translated to squeeze the spring. At the same time, the end of the clamping rod leaves the inside of the limiting rod. At this time, the limiting rod is not constrained, and the pointed head can be directly pulled to move the limiting rod out of the screw head. At this time, the pointed head and the second screw rod can be disassembled, which improves convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the disassembly structure of the utility model;

[0018] Figure 3 It is a partial cross-sectional structural schematic diagram of the utility model;

[0019] In the figure: 1. Screw body; 2. Clamping structure;

[0020] 101, screw head; 102, first screw rod; 103, second screw rod; 104, through hole; 105, guide groove; 106, first guide rod; 107, limit rod; 108, pointed head; 109, second guide rod;

[0021] 201, movable block; 202, buckle slot; 203, clamping rod; 204, limiting ring frame; 205, spring; 206, limiting slot. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0023] Segmented thread fastening screws, see Figures 1 to 3 , comprising a screw body 1, wherein a clamping structure 2 is provided inside the screw body 1;

[0024] The screw body 1 includes a screw head 101, a first screw rod 102 is fixedly connected to the lower end of the screw head 101, a second screw rod 103 is attached to the bottom of the first screw rod 102, a through hole 104 is opened in the middle end of the first screw rod 102 and the second screw rod 103, two groups of guide grooves 105 are evenly distributed on the periphery of the through hole 104, two groups of first guide rods 106 are arranged on the top of the second screw rod 103, a limiting rod 107 is passed through the inside of the through hole 104, and a pointed head 108 is fixedly connected to the bottom of the limiting rod 107, wherein the limiting rod 108 is fixedly connected to the bottom of the limiting rod 108. The length of the positioning rod 107 is greater than the total length of the first screw rod 102 and the second screw rod 103. The end of the positioning rod 107 away from the pointed head 108 is engaged with the inside of the screw head 101. Two groups of second guide rods 109 are evenly distributed on the periphery of the positioning rod 107. The second guide rod 109 and the pointed head 108 are fixedly connected. It is worth noting that the first guide rod 106 and the second guide rod 109 have the same shape and structure, and the first guide rod 106 and the second guide rod 109 are matched and engaged with the guide groove 105. The utility model effectively realizes the partial disassembly and replacement of the screw by changing the integrally formed screw into an assembleable and detachable screw, thereby reducing the replacement cost. The matching engagement of the first guide rod 106, the second guide rod 109 and the guide groove 105 facilitates the rapid assembly of the first screw rod 102 and the second screw rod 103, and the second screw 103 and the pointed head 108, thereby improving the assembly efficiency.

[0025] It is worth noting that the clamping structure 2 includes a movable block 201, which is engaged with the inside of the screw head 101. A buckle groove 202 is provided inside the movable block 201. A clamping rod 203 is connected to one side of the movable block 201. Furthermore, one end of the clamping rod 203 away from the movable block 201 is inserted into the inside of the limiting rod 107. The length of the part of the clamping rod 203 inserted into the inside of the limiting rod 107 is slightly greater than the length of the movable block 201. A limiting ring frame 204 is fixedly connected to the surface of the clamping rod 203. A spring 205 is movably sleeved on the surface of the clamping rod 203. A limiting groove 206 is provided on the outside of the limiting ring frame 204 and the spring 205. Furthermore, the limiting ring frame 204 forms an elastic structure through the spring 205 and the limiting groove 206, and the limiting groove 206 is integrally formed with the screw head 101. When it is necessary to partially disassemble the screw body 1 in the utility model, the buckle groove 202 is buckled to pull the movable block 201 outward, and the clamping rod 203 and the limiting ring frame 204 are effectively translated to squeeze the spring 205. At the same time, the end of the clamping rod 203 leaves the inside of the limiting rod 107. At this time, the limiting rod 107 is not constrained, and the pointed head 108 can be directly pulled to move the limiting rod 107 out of the screw head 101. At this time, the pointed head 108 and the second screw rod 103 can be disassembled, which improves convenience.

[0026] Working principle: When it is necessary to partially disassemble the screw body 1, hold the buckle groove 202 to pull the movable block 201 outward. At this time, the clamping rod 203 and the limiting ring frame 204 move horizontally to squeeze the spring 205. At the same time, the end of the clamping rod 203 leaves the inside of the limiting rod 107. At this time, the limiting rod 107 is not constrained, and the pointed head 108 can be directly pulled to move the limiting rod 107 out of the screw head 101. At this time, the pointed head 108 and the second screw rod 103 can be disassembled. After the partial parts are replaced, the first The matching engagement of the guide rod 106, the second guide rod 109 and the guide groove 105 allows for quick assembly of the first screw 102 and the second screw 103, and the second screw 103 and the pointed head 108. At the same time, based on the outward movement of the movable block 201, the limit rod 107 is inserted into the screw head 101, and then the movable block 201 is loosened. Under the influence of the rebound force of the spring 205, the clamping rod 203 is clamped into the limit rod 107 to constrain the limit rod 107, thereby realizing the overall assembly of the screw.

[0027] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. Segmented thread fastening screw, characterized in that: It comprises a screw body (1), wherein a clamping structure (2) is provided inside the screw body (1); The screw body (1) comprises a screw head (101), the lower end of the screw head (101) is fixedly connected to a first screw rod (102), the bottom of the first screw rod (102) is attached to a second screw rod (103), the middle ends of the first screw rod (102) and the second screw rod (103) are both provided with through holes (104), two groups of guide grooves (105) are evenly distributed around the periphery of the through hole (104), two groups of first guide rods (106) are arranged on the top of the second screw rod (103), a limiting rod (107) passes through the inside of the through hole (104), a pointed head (108) is fixedly connected to the bottom of the limiting rod (107), two groups of second guide rods (109) are evenly distributed around the periphery of the limiting rod (107), and the second guide rod (109) and the pointed head (108) are fixedly connected.

2. The segmented thread fastening screw according to claim 1, characterized in that: The first guide rod (106) and the second guide rod (109) have the same shape and structure, and the first guide rod (106) and the second guide rod (109) are matched and engaged with the guide groove (105).

3. The segmented thread fastening screw according to claim 1, characterized in that: The length of the limiting rod (107) is greater than the total length of the first screw rod (102) and the second screw rod (103), and one end of the limiting rod (107) away from the pointed head (108) is engaged with the inside of the screw head (101).

4. The segmented thread fastening screw according to claim 1, characterized in that: The clamping structure (2) comprises a movable block (201), the movable block (201) is clamped inside the screw head (101), a buckle groove (202) is provided inside the movable block (201), a clamping rod (203) is connected to one side of the movable block (201), a limit ring frame (204) is fixedly connected to the surface of the clamping rod (203), a spring (205) is movably sleeved on the surface of the clamping rod (203), and a limit groove (206) is provided outside the limit ring frame (204) and the spring (205).

5. The segmented thread fastening screw according to claim 4, characterized in that: One end of the clamping rod (203) away from the movable block (201) is inserted into the interior of the limiting rod (107), and the length of the portion of the clamping rod (203) inserted into the interior of the limiting rod (107) is slightly greater than the length of the movable block (201).

6. The segmented thread fastening screw according to claim 4, characterized in that: The limiting ring frame (204) forms an elastic structure through a spring (205) and a limiting groove (206), and the limiting groove (206) and the screw head (101) are integrally formed.

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