CN218760854U

CN218760854U - Anti-loosening fastener

Info

Publication number: CN218760854U
Application number: CN202222974526.2U
Authority: CN
Inventors: 柯林平; 林学健; 沈建华; 胡振宇
Original assignee: Pinghu Huasheng Hardware Products Co ltd
Current assignee: Pinghu Huasheng Hardware Products Co ltd
Priority date: 2022-11-04
Filing date: 2022-11-04
Publication date: 2023-03-28
Anticipated expiration: 2032-11-04

Abstract

The utility model provides a locking type fastener, prevent loose piece, gasket and spring including connecting screw, central driving screw, nylon, connecting screw's center has the screw thread chamber, central driving screw sets up in the screw thread intracavity, the draw-in groove that a plurality of and screw thread chamber are linked together is seted up to connecting screw's outer wall, nylon prevents loose piece and installs in the draw-in groove, central driving screw's one end is equipped with the drive conical surface, nylon prevents loose piece and under the effect of the drive conical surface, can follow the draw-in groove and move to the outside, connecting screw's one end has the bolt head, the gasket passes through the lower terminal surface of spring mounting at the bolt head. The nylon anti-loosening block can be extruded outwards under the action of the central driving screw rod and is pressed against the threaded hole of the connected piece, so that the rotation of the bolt in a fastening state is limited. Further, the washer provided with the spring is provided below the screw head, and the anti-loosening effect can be improved.

Description

Anti-loosening fastener

[ technical field ] A method for producing a semiconductor device

The utility model relates to a technical field of fastener, especially a locking type fastener.

[ background of the invention ]

The fastener is used for fastening various types of components together, and has many places requiring fastening looseness prevention by using bolts, and is required to be firm and durable. The existing fastener is easy to cause the fastener to be loosened due to fatigue during the use process and long-term fastening state, or the fastener is loosened due to vibration to influence the use, and the anti-loosening fastener is provided.

[ Utility model ] content

The utility model aims at solving the problem among the prior art, provide an anti-loosening fastener, can restrict the bolt rotation of fastening state, prevent that the bolt from appearing the pine phenomenon easily and taking off.

For the purpose of this, the utility model provides a locking type fastener, including connecting screw, central drive screw, nylon locking piece, gasket and spring, connecting screw's center has the screw thread chamber, central drive screw sets up in the screw thread intracavity, the draw-in groove that a plurality of and screw thread chamber are linked together is seted up to connecting screw's outer wall, nylon locking piece is installed in the draw-in groove, central drive screw's one end is equipped with the drive conical surface, nylon locking piece can be followed the draw-in groove and moved to the outside under the effect of the drive conical surface, connecting screw's one end has the bolt head, the gasket passes through the lower terminal surface of spring mounting at the bolt head.

Preferably, the lower end face of the bolt head is provided with a ring groove, the gasket is mounted in the ring groove through a spring, and the lower end face of the gasket is uniformly provided with anti-loosening clamping teeth.

Preferably, the two sides of the gasket are symmetrically provided with positioning clamps, and the two sides of the ring groove are symmetrically provided with limiting grooves matched with the positioning clamps.

Preferably, the number of the clamping grooves is two, and the two clamping grooves are symmetrically arranged on two sides of the connecting screw rod.

Preferably, the top of the central driving screw is provided with an inner hexagonal driving groove.

Preferably, the bolt head is a hexagonal bolt head.

The utility model has the advantages that: the utility model discloses a cooperation of connecting screw, central drive screw, nylon anti-loosening block, gasket and spring etc. nylon anti-loosening block can outwards be extruded under central drive screw's effect to with by the screw hole extrusion of connecting piece support and lean on, thereby restriction fastening state's bolt rotates. Further, the washer provided with the spring is provided below the screw head, and the anti-loosening effect can be improved.

The features and advantages of the present invention will be described in detail by embodiments with reference to the accompanying drawings.

[ description of the drawings ]

Fig. 1 is a schematic cross-sectional view of a nylon anti-loosening block of an anti-loosening fastener of the present invention in an uncompressed state;

FIG. 2 is a schematic cross-sectional view of a nylon anti-loosening block of an anti-loosening fastener according to the present invention in a compressed state;

FIG. 3 is an enlarged schematic view of the structure at A in FIG. 2;

fig. 4 is a schematic bottom view of a washer of the anti-loosening fastener of the present invention.

[ detailed description ] embodiments

Referring to fig. 1 to 4, the utility model relates to a locking type fastener, prevent loose piece 3, gasket 4 and spring 5 including connecting screw 1, central driving screw 2, nylon, connecting screw 1's center has screw thread chamber 10, central driving screw 2 sets up in screw thread chamber 10, connecting screw 1's outer wall has been seted up a plurality of and the draw-in groove 100 that is linked together of screw thread chamber 10, nylon prevents loose piece 3 and installs in draw-in groove 100, the one end of central driving screw 2 is equipped with the drive conical surface 22, nylon prevents loose piece 3 and under the effect of drive conical surface 22, can follow draw-in groove 100 and move to the outside, connecting screw 1's one end has bolt head 11, gasket 4 passes through spring 5 and installs the lower terminal surface at bolt head 11.

Further, the lower end face of the bolt head 11 is provided with a ring groove 111, the gasket 4 is installed in the ring groove 111 through the spring 5, and the lower end face of the gasket 4 is uniformly provided with the anti-loosening clamping teeth 41.

Furthermore, the two sides of the gasket 4 are symmetrically provided with the positioning clips 42, and the two sides of the ring groove 111 are symmetrically provided with the limiting grooves 112 matched with the positioning clips 42.

Further, the number of the clamping grooves 100 is two, the two clamping grooves are symmetrically arranged on two sides of the connecting screw rod 1, and the clamping grooves 100 are arranged along the radial direction of the connecting screw rod 1. In the present embodiment, the cross section of the card slot 100 is circular.

Furthermore, the end of the central driving screw 2 is also provided with a limiting head 23 for preventing the nylon anti-loosening block 3 from falling into the threaded cavity 10.

Further, the top of the central driving screw 2 is provided with a hexagon socket driving groove 21.

Further, the bolt head 11 is a hexagonal bolt head.

The utility model discloses the working process:

the utility model relates to a locking type fastener, in the process of using, earlier arrive in the threaded hole by the connecting piece with the fastener shown in figure 1, at this moment, spring 5 is compressed in gasket 4 gets into annular 111, make and produce certain pretightning force between fastener and the screw hole, the locking latch 41 on 4 surfaces of cooperation gasket, better locking effect has, then utilize allen key drive center drive screw 2 to remove downwards, nylon prevents loose piece 3 under the effect of the drive conical surface 22, can follow draw-in groove 100 and move to the outside, and support by the extrusion of the threaded hole of connecting piece and lean on, thereby realize the bolt pivoted purpose of restriction fastening state, improve locking effect.

The above-mentioned embodiment is right the utility model discloses an explanation, it is not right the utility model discloses a limited, any right the scheme after the simple transform of the utility model all belongs to the protection scope of the utility model.

Claims

1. An anti-loosening fastener, characterized in that: including connecting screw (1), central drive screw (2), nylon anti-loosening block (3), gasket (4) and spring (5), the center of connecting screw (1) has screw thread chamber (10), central drive screw (2) set up in screw thread chamber (10), draw-in groove (100) that a plurality of and screw thread chamber (10) are linked together are seted up to the outer wall of connecting screw (1), nylon anti-loosening block (3) is installed in draw-in groove (100), the one end of central drive screw (2) is equipped with the drive conical surface (22), nylon anti-loosening block (3) can be followed draw-in groove (100) and moved to the outside under the effect of drive conical surface (22), the one end of connecting screw (1) has bolt head (11), the lower terminal surface at bolt head (11) is installed through spring (5) in gasket (4).

2. A check fastener as defined in claim 1, wherein: annular groove (111) have been seted up to the lower terminal surface of bolt head (11), install in annular groove (111) through spring (5) gasket (4), the lower terminal surface equipartition of gasket (4) has locking latch (41).

3. A check fastener as defined in claim 2, wherein: the bilateral symmetry of gasket (4) is equipped with locator card (42), the bilateral symmetry of annular (111) is seted up spacing groove (112) with locator card (42) looks adaptation.

4. A check fastener as defined in claim 1, wherein: the number of the clamping grooves (100) is two, and the two clamping grooves are symmetrically arranged on two sides of the connecting screw rod (1).

5. A check fastener as defined in claim 1, wherein: and the top of the central driving screw rod (2) is provided with an inner hexagonal driving groove (21).

6. A check fastener as defined in claim 1, wherein: the bolt head (11) is a hexagonal bolt head.