Locking mechanism of self-locking screw

Abstract

The utility model relates to the technical field of screws, in particular to a locking mechanism of a self-locking screw, which comprises a screw rod, a cavity, a sliding cavity, a top cavity and an abutting mechanism, a screw cap is fixed at the top end of the screw rod, the top cavity is arranged in the middle of the top end of the screw cap, and the sliding cavity is positioned below the top cavity and arranged inside the screw rod. The cavity is located below the sliding cavity and is formed in the screw rod, the abutting mechanism comprises a pushing assembly, a lifting assembly, a plurality of penetrating holes, a plurality of locking rods and a plurality of moving assemblies, the multiple locking rods are arranged, after two workpieces are fixed and fastened through the screw, the multiple locking rods can abut against the workpieces again, and therefore the workpieces can be fixed and fastened through the moving assemblies; the friction force between the locking rod and the workpiece is increased, the transverse locking effect of the screw on the workpiece is improved, and therefore the screw is not prone to loosening from the workpiece, and the locking effect of the screw is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to screw technical field, concretely is a locking mechanism of self -locking screw. BACKGROUND

[0002] Screw is also called screw, and the function of screw is mainly to connect two workpieces together, and the screw generally comprises a screw rod and a screw cap.

[0003] In some more stable occasions, the screw is not easy to loosen on the workpiece, and the fastening effect is good, if in some not very stable occasions, such as the workpiece is in a vibrating environment, the screw will loosen due to vibration or other external force, the stability of the connection of the two workpieces is reduced, and the fastening effect of the screw is affected, aiming at the problem, a locking mechanism of self -locking screw is provided. UTILITY MODEL CONTENTS

[0004] The utility model discloses a locking mechanism of self -locking screw to solve the problem in the background art.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A locking mechanism of self -locking screw, including screw rod, the top of screw rod is fixed with screw cap, still including cavity, sliding chamber, top chamber and abutting mechanism, top chamber is set up in the top middle part of screw cap, sliding chamber is located below top chamber and is set up in the inside of screw rod, cavity is located below sliding chamber and is set up in the inside of screw rod;

[0007] The abutting mechanism includes a pushing assembly, a lifting assembly, a plurality of perforations, a plurality of locking rods and a plurality of moving assemblies. The plurality of perforations are respectively provided on both sides of the screw rod. Each locking rod is located inside the cavity, and one end of each locking rod is inserted into one of the perforations. The lifting assembly is located between the cavity and the sliding chamber. Each moving assembly is located between the lifting assembly and one of the locking rods. The pushing assembly is installed between the top chamber and the lifting assembly.

[0008] As a further scheme of the utility model: each lifting assembly includes a moving block, a moving rod, a limiting hole and a plurality of wedge-shaped blocks. The limiting hole is provided in the inside of the screw rod, and the two ends of the limiting hole are connected with the sliding chamber and the cavity respectively. The moving rod is inserted into the inside of the limiting hole. The moving block is slidingly arranged in the inside of the sliding chamber. The top end of the moving rod is fixedly connected with the moving block. The plurality of wedge-shaped blocks are respectively installed on both sides of the moving rod.

[0009] As a further scheme of the utility model: two guide grooves are symmetrically provided on the inner walls of both sides of the sliding chamber. The moving block has two guide strips symmetrically on both sides. Each guide strip is slidingly arranged in one of the guide grooves.

[0010] As a further scheme of the utility model: each mobile assembly includes mobile plate, mobile wheel, two mounting plates, two guide rods and two springs, the mobile plate is located inside the cavity and is fixedly installed at one end of the locking rod, the two mounting plates are fixedly arranged on the side of the mobile plate away from the locking rod, the mobile wheel is rotatably arranged between the ends of the two mounting plates away from the mobile plate, the mobile wheel abuts against the surface of the wedge-shaped block, and the two sides of the mobile plate are symmetrically provided with two guide members.

[0011] As a further scheme of the utility model: each guide member includes a guide rod and a spring, the guide rod is slidably arranged on the mobile plate, one end of the guide rod is fixedly connected with the screw rod, and the spring is sleeved on the guide rod, and two ends of the spring are connected with the screw rod and the mobile plate respectively.

[0012] As a further scheme of the utility model: the pushing assembly includes a threaded hole, a lifting plate and a lead screw, the threaded hole is formed in the nut, the threaded hole is located between the top cavity and the sliding cavity, the lead screw is located in the threaded hole and is threadedly matched with the threaded hole, the bottom end of the lead screw is rotatably connected with the moving block through a bearing, the top end of the lead screw is fixedly connected with the lifting plate, and the lifting plate is located in the top cavity.

[0013] As a further scheme of the utility model: the top end of the lifting plate is provided with an internal hexagonal hole.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] 1、The locking mechanism of the self-locking screw disclosed by the utility model can realize the synchronous movement of the plurality of locking rods by setting the pushing assembly and the lifting assembly, so that the plurality of locking rods can be moved out of the through hole at the same time, the use is convenient, and the locking effect is ensured.

[0016] 2、The locking mechanism of the self-locking screw disclosed by the utility model can realize the synchronous movement of the plurality of locking rods by setting the pushing assembly and the lifting assembly, so that the plurality of locking rods can be moved out of the through hole at the same time, the use is convenient, and the locking effect is ensured.

[0017] 3、When it is necessary to release the locking of the locking rod to the workpiece, the locking rod can be moved towards the direction close to the moving rod under the action of the spring by moving the moving rod upwards, so that the transverse positioning of the workpiece is released, and then the screw is removed from the workpiece, so that the screw can be disassembled. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The utility model is a structural schematic view.

[0019] Figure 2It is the internal partial structure schematic view of the screw rod in the utility model.

[0020] Figure 3 It is the utility model Figure 2 A portion of the enlarged structure schematic view.

[0021] Figure 4 It is the structure schematic view of the sliding cavity in the utility model.

[0022] Figure 5 It is the utility model Figure 4 B portion of the enlarged structure schematic view.

[0023] Figure 6 It is the structure schematic view of the moving block in the utility model.

[0024] Wherein: 11, screw rod, 12, nut, 13, cavity, 14, perforation, 15, locking rod, 16, moving plate, 17, guide rod, 18, spring, 19, mounting plate, 20, moving wheel, 21, moving rod, 22, wedge block, 23, sliding cavity, 24, guide slot, 25, guide bar, 26, moving block, 27, screw, 28, threaded hole, 29, lifting plate, 30, top cavity, 31, internal hexagonal hole, 32, limit hole. Specific implementation

[0025] The principles and characteristics of the utility model are described below in conjunction with the drawings, and the examples are only used to explain the utility model and are not used to limit the scope of the utility model.

[0026] The utility model provides the following preferred embodiments:

[0027] Example one, as Figures 1-6 The locking mechanism of the self-locking screw, including screw rod 11, the top end of screw rod 11 is fixed with nut 12, screw rod 11 and nut 12 are integrally formed and arranged, still including cavity 13, sliding cavity 23, top cavity 30 and abutting mechanism, top cavity 30 is opened in the top middle part of nut 12, sliding cavity 23 is located below top cavity 30 and is opened in the inside of screw rod 11, cavity 13 is located below sliding cavity 23 and is opened in the inside of screw rod 11;

[0028] The abutting mechanism includes pushing assembly, lifting assembly, multiple perforations 14, multiple locking rods 15 and multiple moving assemblies, multiple perforations 14 are opened in the both sides of screw rod 11 respectively, every locking rod 15 is located in the inside of cavity 13, and every locking rod 15 one end is inserted in the inside of a perforation 14, lifting assembly is located between cavity 13 and sliding cavity 23, every moving assembly is located between lifting assembly and a locking rod 15, pushing assembly is installed between top cavity 30 and lifting assembly;

[0029] In use, first, the tool is used to rotate the screw rod 11 and the nut 12, so that the screw rod 11 can be screwed into two workpieces, the two workpieces are fixed together, and initial fastening is achieved;

[0030] Then, the pushing assembly and the lifting assembly can drive the plurality of moving assemblies to work, so that the locking rod 15 can slide in the inside of the through hole 14, one end of the locking rod 15 can slide out of the inside of the through hole 14 and abut against the workpiece, the friction between the locking rod 15 and the workpiece is increased, the transverse locking effect of the screw on the workpiece is improved, so that the screw is not easy to loosen from the workpiece, and the locking effect of the screw is improved.

[0031] As shown in Figures 1-6 each lifting assembly comprises a moving block 26, a moving rod 21, a limiting hole 32 and a plurality of wedge-shaped blocks 22, the limiting hole 32 is arranged in the inside of the screw rod 11, the limiting hole 32 is connected with the sliding cavity 23 and the cavity 13 at two ends respectively, the moving rod 21 is inserted into the inside of the limiting hole 32, the moving rod 21 is slidingly arranged in the inside of the limiting hole 32, the moving block 26 is slidingly arranged in the inside of the sliding cavity 23, the moving block 26 can move up and down in the inside of the sliding cavity 23, the top end of the moving rod 21 is fixedly connected with the moving block 26, and the plurality of wedge-shaped blocks 22 are installed on two sides of the moving rod 21 respectively;

[0032] In use, when the pushing assembly works, the moving block 26 can be lifted in the inside of the sliding cavity 23, and the moving block 26 can drive the moving rod 21 to slide in the inside of the limiting hole 32 when moving, so that the plurality of wedge-shaped blocks 22 on the moving rod 21 can be moved.

[0033] As shown in Figures 1-6 two guide grooves 24 are symmetrically arranged in the two side inner walls of the sliding cavity 23, the two sides of the moving block 26 are symmetrically provided with two guide strips 25, each guide strip 25 is slidingly arranged in one guide groove 24, and the sliding connection between the guide groove 24 and the guide strip 25 can guide the moving block 26, so that the stability of the moving block 26 during movement in the inside of the sliding cavity 23 is ensured.

[0034] As shown in Figures 1-6 each moving assembly comprises a moving plate 16, a moving wheel 20, two mounting plates 19, two guide rods 17 and two springs 18, the moving plate 16 is located in the inside of the cavity 13 and is fixedly installed at one end of the locking rod 15, the two mounting plates 19 are symmetrically fixed on one side of the moving plate 16 away from the locking rod 15, the moving wheel 20 is rotatably arranged between the two mounting plates 19 away from the moving plate 16, the moving wheel 20 abuts against the surface of the wedge-shaped block 22, and two guide members are symmetrically arranged on the two sides of the moving plate 16.

[0035] As shown in Figures 1-6As shown, each guide piece comprises a guide rod 17 and a spring 18, the guide rod 17 is slidingly arranged on the moving plate 16, one end of the guide rod 17 is fixedly connected with the screw rod 11, the spring 18 is sleeved on the guide rod 17, and two ends of the spring 18 are connected with the screw rod 11 and the moving plate 16 respectively;

[0036] In the initial state, the spring 18 is in a natural state, and the moving wheel 20 is in contact with the bottom end surface of the wedge-shaped block 22;

[0037] When it is needed to move the locking rod 15, the moving rod 21 drives the wedge-shaped block 22 to move downwards, and the wedge-shaped block 22 can press the moving wheel 20 when moving downwards by means of the inclined surface of the wedge-shaped block 22, so that the moving wheel 20 can move to the side away from the moving rod 21, the moving wheel 20 drives the moving plate 16 to slide on the two guide rods 17 through the mounting plate 19, the spring 18 is compressed, and the moving plate 16 can drive the locking rod 15 to slide in the inside of the perforation 14 when moving, so that one end of the locking rod 15 can slide out of the perforation 14 and abut against the workpiece, a transverse locking force is applied to the workpiece, the screw is not easy to loosen from the workpiece, and the locking effect of the screw is improved.

[0038] As shown in the figure, Figures 1-6 The pushing assembly comprises a threaded hole 28, a lifting plate 29 and a lead screw 27, the threaded hole 28 is formed in the nut 12, the threaded hole 28 is located between the top cavity 30 and the sliding cavity 23, the lead screw 27 is located in the inside of the threaded hole 28 and is in threaded cooperation with the threaded hole 28, the bottom end of the lead screw 27 is rotatably connected with the moving block 26 through a bearing, and the top end of the lead screw 27 is fixedly connected with the lifting plate 29, and the lifting plate 29 is located in the inside of the top cavity 30.

[0039] When it is needed to move the moving block 26, the lifting plate 29 is rotated, the lifting plate 29 can drive the lead screw 27 to rotate, the lead screw 27 can be screwed into the inside of the threaded hole 28 when the lifting plate 29 rotates due to the threaded cooperation between the lead screw 27 and the threaded hole 28, and the moving block 26 can be driven to move downwards in the inside of the sliding cavity 23 at the same time when the lead screw 27 is screwed into the inside of the threaded hole 28 due to the rotatable connection between the lead screw 27 and the moving block 26.

[0040] As shown in the figure, Figures 1-6 The top end of the lifting plate 29 is provided with an internal hexagonal hole 31, and the internal hexagonal hole 31 is arranged to facilitate the rotation of the lifting plate 29 in the inside of the top cavity 30 by means of a tool.

[0041] The beneficial effects of the utility model are embodied in the above-mentioned preferred embodiments of the utility model, and are not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A locking mechanism for a self-locking screw, comprising a screw (11), wherein a nut (12) is fixed to the top end of the screw (11), characterized in that, It also includes a cavity (13), a sliding cavity (23), a top cavity (30), and a clamping mechanism. The top cavity (30) is located at the top center of the nut (12). The sliding cavity (23) is located below the top cavity (30) and is located inside the screw (11). The cavity (13) is located below the sliding cavity (23) and is located inside the screw (11). The clamping mechanism includes a pushing component, a lifting component, multiple through holes (14), multiple locking rods (15), and multiple moving components. The multiple through holes (14) are respectively opened on both sides of the screw (11). Each locking rod (15) is located inside the cavity (13), and one end of each locking rod (15) is inserted into the inside of a through hole (14). The lifting component is located between the cavity (13) and the sliding cavity (23). Each moving component is located between the lifting component and a locking rod (15). The pushing component is installed between the top cavity (30) and the lifting component.

2. The locking mechanism for a self-locking screw according to claim 1, characterized in that, Each lifting assembly includes a moving block (26), a moving rod (21), a limiting hole (32), and multiple wedge blocks (22). The limiting hole (32) is opened inside the screw (11). The two ends of the limiting hole (32) are connected to the sliding cavity (23) and the cavity (13) respectively. The moving rod (21) is inserted into the limiting hole (32). The moving block (26) is slidably disposed inside the sliding cavity (23). The top end of the moving rod (21) is fixedly connected to the moving block (26). Multiple wedge blocks (22) are installed on both sides of the moving rod (21).

3. The locking mechanism for a self-locking screw according to claim 2, characterized in that, Two guide grooves (24) are symmetrically opened on the inner walls of the sliding cavity (23), and two guide bars (25) are symmetrically opened on the two sides of the moving block (26). Each guide bar (25) is slidably set inside a guide groove (24).

4. The locking mechanism for a self-locking screw according to claim 3, characterized in that, Each moving component includes a moving plate (16), a moving wheel (20), two mounting plates (19), two guide rods (17), and two springs (18). The moving plate (16) is located inside the cavity (13) and is fixedly mounted on one end of the locking rod (15). The two mounting plates (19) are symmetrically fixed on the side of the moving plate (16) away from the locking rod (15). The moving wheel (20) is rotatably disposed between the ends of the two mounting plates (19) away from the moving plate (16). The moving wheel (20) abuts against the surface of the wedge block (22). Two guide members are symmetrically provided on both sides of the moving plate (16).

5. The locking mechanism for a self-locking screw according to claim 4, characterized in that, Each guide includes a guide rod (17) and a spring (18). The guide rod (17) is slidably mounted on the movable plate (16). One end of the guide rod (17) is fixedly connected to the screw (11). The spring (18) is sleeved on the guide rod (17). The two ends of the spring (18) are connected to the screw (11) and the movable plate (16) respectively.

6. The locking mechanism for a self-locking screw according to claim 5, characterized in that, The actuating assembly includes a threaded hole (28), a lifting plate (29), and a lead screw (27). The threaded hole (28) is opened on the nut (12) and is located between the top cavity (30) and the sliding cavity (23). The lead screw (27) is located inside the threaded hole (28) and is threadedly engaged with the threaded hole (28). The bottom end of the lead screw (27) is rotatably connected to the moving block (26) through a bearing. The top end of the lead screw (27) is fixedly connected to the lifting plate (29), which is located inside the top cavity (30).

7. The locking mechanism for a self-locking screw according to claim 6, characterized in that, The top of the lifting plate (29) is provided with an internal hexagonal hole (31).

Images