Anti-loosening bolt

Abstract

The utility model belongs to the technical field of mechanical parts, and particularly relates to an anti-loosening bolt which comprises a first bolt cap, a first threaded rod is arranged at the bottom of the first bolt cap, a fastening mechanism is sleeved outside the first threaded rod, and a limiting fixing mechanism is arranged inside the first bolt cap. When fastening is achieved through the first threaded rod and the second threaded rod, the limiting block at the top of the limiting rod can abut against the second bolt cap, so that the fastening effect can be improved when the bolt is prevented from loosening, meanwhile, the loosening effect caused by vibration is reduced, disassembly is very easy, and the anti-loosening effect is good. The second bolt cap and the second threaded rod in the first bolt cap are loosened firstly, the limiting block is separated, then the limiting rod is moved out, the external first threaded rod can be loosened under matched use, the structure is simple, machining is easy, fastening connection between the sleeving shaft and the connecting shaft can be achieved through the arranged fastening mechanism, and the practicability is high. And the fastening installation effect can be improved conveniently.

Description

TECHNICAL FIELD

[0001] The utility model belongs to mechanical parts technical field, concretely relates to a loosening prevention bolt. BACKGROUND

[0002] Bolt belongs to one kind of mechanical parts, and is a cylindrical fastener with thread matched with nut. It is a kind of fastener consisting of head and screw rod (cylinder with external thread), and needs to be matched with nut for fastening and connecting two parts with through hole. This connection form is called bolt connection. If nut is unscrewed from bolt, the two parts can be separated, so bolt connection belongs to detachable connection, and bolt is used in various mechanical parts.

[0003] The utility model discloses a loosening prevention bolt, and its technical points are as follows: the bolt body and the nut are threadedly sleeved, the lower anti-loosening sleeve is inserted into the top end of the nut after locking, the upper anti-loosening sleeve is placed above the lower anti-loosening sleeve and is fixed by rotating the upper anti-loosening sleeve to make the engaging teeth on the upper anti-loosening sleeve and the engaging teeth on the lower anti-loosening sleeve engage with each other, the fixing sleeve is clamped into the inside of the limiting groove through the guide block, and the upper anti-loosening sleeve and the lower anti-loosening sleeve are fixed, a plurality of limiting clamping blocks are clamped into the inside of the limiting groove, and the spring column and the limiting hole are clamped with each other to be fixed, the upper anti-loosening sleeve and the lower anti-loosening sleeve engage with each other to prevent the bolt body from rotating relative to the nut, the loosening prevention is completed, and the abnormal loosening of the bolt during use is avoided to affect the fixing effect.

[0004] The bolt is fastened by the mutual engagement of the upper anti-loosening sleeve and the lower anti-loosening sleeve in the above process, and loosening is prevented, but there are still some defects in the process, the bolt is difficult to be quickly disassembled after being fastened, and the fastening effect is poor, and therefore a new loosening prevention bolt is provided to solve the above problems. UTILITY MODEL CONTENTS

[0005] In view of the defects of the prior art, the utility model provides a loosening prevention bolt to solve the problems that the bolt is difficult to be quickly disassembled after being fastened and the fastening effect is poor.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: a loosening prevention bolt, comprising a first bolt cap, the bottom of the first bolt cap is provided with a first threaded rod, the outside of the threaded rod is sleeved with a fastening mechanism, and the inside of the first bolt cap is provided with a limiting fixing mechanism.

[0007] The limiting and fixing mechanism comprises a second bolt cap, a second threaded rod, a mounting groove, a limiting groove, a limiting rod and a limiting block, a mounting groove is formed in the middle of the first bolt cap, limiting grooves are formed in the upper surface of the first bolt cap, the limiting grooves are communicated with the mounting groove, a second bolt cap is arranged in the mounting groove, the bottom of the second bolt cap is fixedly connected with a second threaded rod, a limiting rod is slidably arranged in the limiting groove, the top of each limiting rod is fixedly connected with a limiting block, and the top of each limiting block is in abutment with the bottom of the second bolt cap.

[0008] Further, a threaded groove is formed in the first bolt cap, and the threaded groove is threadedly connected with the second threaded rod.

[0009] Further, the mounting groove is in a conical hollow shape, and positioning grooves are formed in the two side walls, and the limiting block is arranged in the positioning groove.

[0010] Further, a groove is formed in the second bolt cap, and the groove is in a "one" shape, a "ten" shape, a hexagonal shape, a square shape or a hexagonal flower shape.

[0011] Further, the fastening mechanism comprises a sleeving shaft, an engaging groove, an engaging shaft and an insertion block, the first threaded rod is slidably sleeved with the sleeving shaft and the engaging shaft, the bottom of the sleeving shaft is provided with the engaging groove, the top of the engaging shaft is fixedly connected with the insertion block, and the insertion block is slidably connected with the engaging groove.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] 1、The first threaded rod and the second threaded rod are used for fastening, the limiting block on the top of the limiting rod is used for tightly pressing the second bolt cap, the fastening effect is improved when the bolt is prevented from loosening, the loosening effect caused by vibration is reduced, the first bolt cap and the second threaded rod in the first bolt cap are loosened, the limiting block is separated, the limiting rod is moved out, the first threaded rod outside is loosened, the structure is simple, and the processing is easy.

[0014] 2、The fastening mechanism is used for fastening connection between the sleeving shaft and the engaging shaft, the fastening installation effect is improved, and the fastening effect of the bolt is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] The drawings are used to provide further understanding of the utility model, constitute a part of the specification, are used for explaining the utility model together with the embodiments of the utility model, and do not constitute the limitation to the utility model.

[0016] Fig. 1The utility model discloses an appearance structure schematic drawing of the utility model discloses a kind of anti-loose bolt.

[0017] Fig. 2 The utility model discloses a limiting and fixing mechanism structure explosion map.

[0018] Fig. 3 The utility model discloses a fastening mechanism structure analysis diagram.

[0019] In the drawing: 1, first threaded rod;2, first bolt cap;3, limiting and fixing mechanism;301, mounting groove;302, limiting groove;303, second bolt cap;304, second threaded rod;305, threaded groove;306, limiting rod;307, limiting block;308, positioning groove;4, fastening mechanism;401, connection shaft;402, plug-in block;403, sleeve shaft;404, connection groove. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0021] Please refer to Figs. 1 to 3 The utility model provides a kind of technical scheme: a kind of anti-loose bolt, including first bolt cap 2, the bottom of first bolt cap 2 is provided with first threaded rod 1, first threaded rod 1 is externally sleeved with fastening mechanism 4, the inside of first bolt cap 2 is provided with limiting and fixing mechanism 3;

[0022] Limiting and fixing mechanism 3, including second bolt cap 303, second threaded rod 304, mounting groove 301, limiting groove 302, limiting rod 306 and limiting block 307, mounting groove 301 is set in the middle position of first bolt cap 2, limiting groove 302 is set in the upper surface both sides of first bolt cap 2, limiting groove 302 is communicated with mounting groove 301 and is set, second bolt cap 303 is provided in mounting groove 301, the bottom of second bolt cap 303 is fixedly connected with second threaded rod 304, limiting groove 302 is provided with slidingly connected limiting rod 306, the top of two limiting rods 306 is fixedly connected with limiting block 307, the top of two limiting blocks 307 is in contact with the bottom both sides of second bolt cap 303.

[0023] Among them: the inside of first bolt cap 2 is provided with threaded groove 305, threaded groove 305 is threadedly connected with second threaded rod 304.

[0024] The mounting groove 301 is conical hollow, and the two side walls are provided with positioning grooves 308, and the limiting blocks 307 are arranged in the positioning grooves 308.

[0025] The recess is in the shape of "I", "X", hexagon, square or hexagonal flower.

[0026] The fastening mechanism 4 comprises a sleeving shaft 403, an engaging groove 404, an engaging shaft 401 and an insertion block 402, the sleeving shaft 403 and the engaging shaft 401 are sleeved on the outside of the first threaded rod 1, the bottom of the sleeving shaft 403 is provided with the engaging groove 404, the top of the engaging shaft 401 is fixedly connected with the insertion block 402, and the insertion block 402 is in sliding connection with the engaging groove 404.

[0027] The working principle of the above embodiment is as follows: when in use, after the first threaded rod 1 is inserted into a specified position, the engaging shaft 401 arranged on the outside of the first threaded rod 1 slides upward, the insertion block 402 at the top is inserted into the engaging groove 404 in the sleeving shaft 403 to complete fastening, at this time, the second bolt cap 303 is inserted into the mounting groove 301, aligned with the threaded groove 305 at the bottom, the second threaded rod 304 is inserted into the threaded groove 305 at the bottom to realize fastening, and the limiting rod 306 at the bottom and the limiting block 307 are in contact with each other to realize fixation, so that the fastening of the bolt is improved, when disassembling, the second threaded rod 304 at the bottom is separated by rotating the second bolt cap 303 with a tool, the limiting rod 306 is released from the limiting fixation, the first threaded rod 1 at the bottom is loosened, the limiting fixation of the engaging shaft 401 and the sleeving shaft 403 is completed, and the operation is completed.

[0028] Finally, it should be pointed out that: the above is only the preferred embodiment of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An anti-loosening bolt, comprising a first bolt cap (2), characterized in that: A first threaded rod (1) is provided at the bottom of the first bolt cap (2), a fastening mechanism (4) is sleeved on the outside of the first threaded rod (1), and a limited position fixing mechanism (3) is provided inside the first bolt cap (2); The limiting fixing mechanism (3) comprises a second bolt cap (303), a second threaded rod (304), a mounting groove (301), a limiting groove (302), a limiting rod (306) and a limiting block (307); the first bolt cap (2) is provided with a mounting groove (301) at an upper middle position; limiting grooves (302) are provided on both sides of an upper surface of the first bolt cap (2); the limiting grooves (302) are connected to the mounting groove (301); the second bolt cap (303) is provided in the mounting groove (301); the second threaded rod (304) is fixedly connected to the bottom of the second bolt cap (303); a limiting rod (306) is provided in a sliding connection in the limiting groove (302); the tops of the two limiting rods (306) are fixedly connected to the limiting blocks (307); the tops of the two limiting blocks (307) are in conflict with both sides of the bottom of the second bolt cap (303).

2. The anti-loosening bolt according to claim 1, characterized in that: A thread groove (305) is provided inside the first bolt cap (2), and the thread groove (305) is threadedly connected to the second threaded rod (304).

3. The anti-loosening bolt according to claim 1, characterized in that: The installation groove (301) is conical and hollow, and two side walls are provided with positioning grooves (308), and the limiting block (307) is arranged in the positioning groove (308).

4. The anti-loosening bolt according to claim 1, characterized in that: The second bolt cap (303) is provided with a groove, and the groove is in the shape of a straight line, a cross, a hexagonal square or a hexagonal flower.

5. The anti-loosening bolt according to claim 1, characterized in that: The fastening mechanism (4) comprises a sleeve shaft (403), a connecting groove (404), a connecting shaft (401) and an inserting block (402); the sleeve shaft (403) and the connecting shaft (401) are slidably sleeved on the outside of the first threaded rod; the connecting groove (404) is provided at the bottom of the sleeve shaft (403); the top of the connecting shaft (401) is fixedly connected with an inserting block (402); and the inserting block (402) is slidably connected to the connecting groove (404).

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