Anti-loosening retaining screw

Abstract

The utility model relates to the technical field of screws, in particular to an anti-loosening retaining screw which comprises a screw sleeve and a fixing piece, a groove is formed in the screw sleeve and used for installing and placing a screw head, the screw head is in threaded connection with the inner wall of the groove, the outer side of the screw sleeve is fixedly connected with a second limiting block, and the fixing piece is fixedly connected with the second limiting block. A first limiting block is movably mounted on the upper portion of the inner side of the screw sleeve, a mounting groove is formed in the top end of the fixing part and used for mounting and placing the bottom end of the screw sleeve, two limiting grooves are formed in the inner side of the mounting groove, and the two limiting grooves are used for mounting and placing the two second limiting blocks. Through threaded connection between the screw head and the screw sleeve and limiting of the first limiting block, the screw head can drive the screw sleeve to rotate together during rotation, but due to the fact that the second limiting block is clamped in the limiting groove, the screw sleeve cannot continue to rotate, and therefore loosening of the screw rod is effectively prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to screw technical field, concretely relates to a kind of anti-loose stop screw. BACKGROUND

[0002] As one of the most basic fastening elements in the field of mechanical connection, screws are widely used in mechanical equipment, automobile manufacturing, aerospace, construction engineering and other fields. However, under the working conditions of vibration, impact or alternating load, the traditional screw is easy to gradually loosen due to the microslip between the thread pair, leading to the failure of the connection structure, and even causing serious safety accidents. Therefore, an anti-looseness stop screw is proposed. SUMMARY

[0003] In view of the problems in the prior art, the utility model provides an anti-looseness stop screw.

[0004] The utility model solves the technical scheme that it adopts to a kind of anti-looseness stop screw, including screw sleeve and fixed part, the inside of screw sleeve is provided with recess, the recess is used to place screw head, the inner wall of screw head and recess is threadedly connected, the outside of screw sleeve is fixedly connected with second limit block, the second limit block is equipped with two, the inside upper portion of screw sleeve is movably installed with first limit block, the first limit block is equipped with two;

[0005] The top of fixed part is provided with screw hole, the screw hole is threadedly matched with screw rod, the top of fixed part is also provided with installation slot, the inside of installation slot is communicated with screw hole, the installation slot is used to place the bottom of screw sleeve, the inside of installation slot is provided with limit slot, the limit slot is equipped with two, two limit slots are used to place two second limit blocks.

[0006] By adopting the above technical scheme, through the thread connection between the screw head and the screw sleeve and the limiting of the first limit block, the screw head will rotate together with the screw sleeve when rotating, but the screw sleeve cannot continue to rotate because the second limit block is clamped in the limit slot, thereby effectively preventing the loosening of the screw rod. This design is particularly effective in a vibrating environment and can ensure the stability of the connection.

[0007] The bottom of the screw sleeve is inserted into the installation slot, the second limit block is inserted into the limit slot, and the screw rod is screwed into the screw hole from the through hole. The entire installation process is simple and fast, suitable for various application scenarios.

[0008] Specifically, one end of the first limit block is fixedly connected with one side of the limiting plate, the other side of the limiting plate is fixedly connected with one end of the spring, and the other end of the spring is fixedly connected with the inner side of the cavity.

[0009] Specific, the cavity is opened in the inner upper portion of the screw sleeve, the spring and the limiting plate are arranged in the interior of the cavity.

[0010] Through the above technical scheme, the spring can push the first limiting block away from the cavity, so that it can protrude from the inner side of the groove, and play a limiting effect on the screw head.

[0011] Specifically, the bottom end of the screw sleeve is provided with a through hole, and the through hole is used for the screw rod to pass through, and the top end of the screw rod is fixedly connected with the bottom end of the screw head.

[0012] Through the above technical scheme, the screw rod can be screwed into the screw hole from the through hole, and then the screw sleeve is conveniently sleeved on the outside of the screw head.

[0013] Specifically, the top end of the screw head is used for the one end of the screwdriver to be inserted, the outer side of the screwdriver is sleeved with a top plate, and the groove is matched with the top plate.

[0014] Through the above technical scheme, when the screw needs to be disassembled, the screw sleeve is pinched by hand, and the screwdriver is vertically inserted into the cross groove at the top of the screw head, at the same time, the top plate is also inserted into the groove, and the first limiting block is squeezed into the cavity, so that the screw head can be conveniently screwed out.

[0015] The beneficial effects of the utility model are:

[0016] (1) the utility model discloses a kind of anti-loose stop screw, the limiting of the thread connection between screw head and screw sleeve and first limiting block, screw head when rotating will drive screw sleeve together rotation, but because second limiting block is stuck in limiting slot, screw sleeve cannot continue to rotate, to effectively prevent the loosening of screw rod.This design is particularly effective in a vibrating environment, can ensure the stability of connection.

[0017] (2) the utility model discloses a kind of anti-loose stop screw, the bottom end of screw sleeve is inserted into mounting groove, second limiting block is inserted into limiting slot, screw rod is screwed into screw hole from through hole, whole installation process is simple and fast, suitable for a variety of application scenarios. DRAWINGS

[0018] The utility model is further described below in connection with drawings and examples.

[0019] Figure 1 It is the three-dimensional structure schematic view of the utility model;

[0020] Figure 2 It is the plane structure schematic view of the utility model;

[0021] Figure 3 It is the plane structure schematic view of the screw sleeve of the utility model;

[0022] Figure 4 It is the fixed part overhead structure schematic diagram of the utility model;

[0023] Figure 5 It is the screwdriver structure schematic diagram of the utility model;

[0024] In the figure: 1, screw rod;2, screw sleeve;3, first limit block;4, groove;5, screw head;6, second limit block;7, spring;8, cavity;9, limit plate;10, top plate;11, screwdriver;12, fixed part;13, limit slot;14, installation slot;15, screw hole;16, through hole. Specific implementation

[0025] In order to make the technical means, creation features, achieve purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific implementation.

[0026] As an embodiment of the utility model, as shown in Figures 1-5 The utility model discloses a kind of anti-loose stop screw, including screw sleeve 2 and fixed part 12, the inside of the screw sleeve 2 is provided with groove 4, the groove 4 is used to install and place screw head 5, the screw head 5 is threadedly connected with the inner wall of groove 4, the outside of the screw sleeve 2 is fixedly connected with second limit block 6, the second limit block 6 is equipped with two, the inside upper portion of the screw sleeve 2 is movably installed with first limit block 3, the first limit block 3 is equipped with two.

[0027] The top of the fixed part 12 is provided with screw hole 15, the screw hole 15 is threadedly adapted with screw rod 1, the top of the fixed part 12 is also provided with installation slot 14, the installation slot 14 is communicated with the inside of screw hole 15, the installation slot 14 is used to install and place the bottom of screw sleeve 2, the inside of the installation slot 14 is provided with limit slot 13, the limit slot 13 is equipped with two, two limit slot 13 is used to install and place two second limit block 6.

[0028] When using, when fixed part 12 vibrates, screw rod 1 can be upwardly rotated and moved, through the thread connection between screw head 5 and screw sleeve 2 and the limit of first limit block 3, screw head 5 can drive screw sleeve 2 and be upwardly rotated and moved, but because second limit block 6 is clamped in limit slot 13, screw sleeve 2 cannot be upwardly rotated and moved, to further can play the anti-loose thrust effect to screw rod 1.

[0029] It needs to be explained that the top end face of first limit block 3 is arc face, bottom end face is horizontal plane.

[0030] The utility model also includes, one end of first limit block 3 with one side of limit board 9 fixed connection, the other side of limit board 9 with one end of spring 7 fixed connection, the other end of spring 7 with the inside one side of cavity 8 fixed connection.

[0031] The utility model also includes, cavity 8 is set up in the inner upper portion of screw sleeve 2, spring 7 and limit board 9 are all arranged in the inside of cavity 8.

[0032] In use, the first limit block 3 can be pushed away from the cavity 8 by the spring 7, so that it protrudes from the inside of the groove 4, and limits the screw head 5.

[0033] The utility model also includes, the bottom end of screw sleeve 2 is equipped with through-hole 16, through-hole 16 is used for screw rod 1 to pass, the top end of screw rod 1 with the bottom end center of screw head 5 fixed connection.

[0034] In use, the screw rod 1 can be screwed into the screw hole 15 from the through-hole 16, and then the screw sleeve 2 can be easily fitted outside the screw head 5.

[0035] The utility model also includes, the top end of screw head 5 is used for the one end installation of screwdriver 11 is inserted, the outside of screwdriver 11 is sleeved with top plate 10, and the groove 4 is matched with the top plate 10.

[0036] In use, when the screw needs to be disassembled, the screw sleeve 2 is held with the hand, and the screwdriver 11 is vertically inserted into the cross slot at the top of the screw head 5, and at the same time, the top plate 10 is also inserted into the groove 4, so that the first limit block 3 is squeezed into the cavity 8, and thus the screw head 5 can be easily screwed out.

[0037] In use, first, the bottom end of the screw sleeve 2 is inserted into the mounting groove 14, and the second limit block 6 is inserted into the limiting groove 13, then the screw rod 1 is screwed into the screw hole 15 from the through-hole 16, and at the same time, the screw head 5 is gradually screwed into the groove 4, when the screw head 5 is screwed into the groove 4, the two first limit blocks 3 are squeezed into the inside of the cavity 8, until the screw head 5 is screwed into the bottom of the groove 4, the spring 7 pushes out the first limit block 3, thereby providing a limiting effect on the screw head 5, when the fixing part 12 vibrates, the screw rod 1 rotates upwardly, through the threaded connection between the screw head 5 and the screw sleeve 2 and the limiting of the first limit block 3, the screw head 5 drives the screw sleeve 2 to rotate upwardly, but because the second limit block 6 is clamped in the limiting groove 13, the screw sleeve 2 cannot rotate upwardly, thereby achieving the anti-loosening thrust effect on the screw rod 1.

[0038] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A locking screw against loosening and retreat, comprising a screw sleeve (2) and a fixing member (12), characterized in that, The inside of the screw sleeve (2) is provided with a groove (4) for placing the screw head (5), the screw head (5) is threadedly connected with the inner wall of the groove (4), the outside of the screw sleeve (2) is fixedly connected with a second limiting block (6), the second limiting block (6) is provided with two, the inside upper portion of the screw sleeve (2) is movably provided with a first limiting block (3), the first limiting block (3) is provided with two; The top end of the fixing piece (12) is provided with a screw hole (15), the screw hole (15) is threadedly matched with the screw rod (1), the top end of the fixing piece (12) is also provided with a mounting groove (14), the mounting groove (14) is communicated with the inside of the screw hole (15), the mounting groove (14) is used for placing the bottom end of the screw sleeve (2), the inside of the mounting groove (14) is provided with a limiting groove (13), the limiting groove (13) is provided with two, the two limiting grooves (13) are used for placing the two second limiting blocks (6).

2. The anti-loosening and retreat-preventing screw according to claim 1, wherein One end of the first limiting block (3) is fixedly connected with one side of the limiting plate (9), the other side of the limiting plate (9) is fixedly connected with one end of the spring (7), the other end of the spring (7) is fixedly connected with the inside of the cavity (8).

3. The anti-loosening and retreat-proof screw according to claim 2, characterized in that The cavity (8) is arranged in the inside upper portion of the screw sleeve (2), and the spring (7) and the limiting plate (9) are arranged in the inside of the cavity (8).

4. The anti-loosening and retreat-preventing screw according to claim 1, wherein The bottom end of the screw sleeve (2) is provided with a through hole (16), the through hole (16) is used for passing the screw rod (1), and the top end of the screw rod (1) is fixedly connected with the bottom end center of the screw head (5).

5. The anti-loosening and retreat-preventing screw according to claim 1, wherein The top end of the screw head (5) is used for inserting one end of the screwdriver (11), and the outside of the screwdriver (11) is fixedly sleeved with a top plate (10), the groove (4) is matched with the top plate (10).

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