CN201973060U

CN201973060U - Check nut

Info

Publication number: CN201973060U
Application number: CN2011200360615U
Authority: CN
Inventors: 任旭辉
Original assignee: Ningbo Tengling Industry & Trade Co Ltd
Current assignee: Ningbo Tengling Industry & Trade Co Ltd
Priority date: 2011-01-28
Filing date: 2011-01-28
Publication date: 2011-09-14
Anticipated expiration: 2021-01-28

Abstract

The utility model relates to a check nut which is usually matched with a bolt or a screw for fastening and connecting two parts with through holes. The check nut comprises a nut body, wherein a plurality of check latches are arranged on the end face of the nut body fitting with the connected part; and the check latches are concretely and technically characterized in that each check latch is surrounded by an arc-shaped inclined face, a side inclined face and a plugging face connected with one ends of the arc-shaped inclined face and the side inclined face; an anti-skidding trenchant edge is arranged at a connecting position of the side inclined face with the arc-shaped inclined face; the inclined direction of the side inclined face is arranged opposite to the screwing direction of the nut body; and the angle between the side inclined plane and the end face is 40 degrees to 80 degrees. The check nut can effectively prevent threads on the bolt or the screw from automatically loosening and retreating when being subjected to vibration.

Description

Locking withdrawing nut

Technical field:

The utility model relates to a kind of fastening piece, specifically is a kind of locking withdrawing nut.

Background technique:

Nut is one of fastening piece commonly used in the mechanical field, it usually and bolt or screw rod be used, be used to be fastenedly connected two parts that have through hole.Because the end face of plain nut mostly is smooth plane, therefore, when this nut cooperate with bolt or screw rod be fastened on two parts that have a through hole after, this nut and the frictional force that is connected between part can be very little, especially when being subjected to vibrating, this nut be easy to along the screw thread on bolt or the screw rod voluntarily pine move back.

The model utility content:

The technical problems to be solved in the utility model is, provides a kind of when being subjected to vibrating, and can effectively prevent along the locking withdrawing nut that moves back of pine voluntarily of the screw thread on bolt or the screw rod.

Technical solution of the present utility model is that a kind of locking withdrawing nut with following structure is provided: comprise nut body, wherein, nut body is being provided with many locking latches that move back with being connected on the end face that part fits.

Locking withdrawing nut described in the utility model, wherein, nut body is being provided with many locking latches that move back on the end face that part fits and can adopts following structure with being connected: every locking moves back latch by curve slope, skew back face and be connected curve slope and the shutoff face of the skew back face one end system of enclosing forms, there is anti-skidding sharp sword the joint of skew back face and curve slope, direction when the true dip direction of skew back face is tightened with nut body is opposite, and the angle between skew back face and the end face is 40～80 °.

Locking withdrawing nut described in the utility model, wherein, the angle between skew back face and the end face can be 50 ° or 60 ° or 70 °.

Locking withdrawing nut described in the utility model, wherein, locking quantity of moving back latch can be 10～30.

Locking withdrawing nut described in the utility model, wherein, locking quantity of moving back latch can be 12 or 14 or 16 or 20 or 22 or 26.

After adopting above structure, compared with prior art, the locking withdrawing nut of the utility model has the following advantages: with the end face of prior art nut is that smooth flat is different, the locking withdrawing nut body of the utility model is being provided with many locking latches that move back with being connected on the end face that part fits, therefore, after the locking withdrawing nut of the utility model is tightened, when to be the locking withdrawing nut of the utility model with the surface that is connected part be close to, the locking withdrawing nut of the utility model will be under the effect of anti-skidding sharp sword and the frictional force that is connected between part surface increase, when pine moves back voluntarily if the locking withdrawing nut of the utility model this moment is vibrated, anti-skidding sharp sword will be cut into the interior surface that is connected part rapidly, prevents that the locking withdrawing nut of the utility model is along the pine purpose of moving back voluntarily of the screw thread on bolt or the screw rod thereby reach with this.

Description of drawings:

Fig. 1 be the locking withdrawing nut of the utility model look up stereochemical structure profile schematic representation;

Fig. 2 is the structure for amplifying schematic representation of " I " among Fig. 1.

Embodiment:

Below in conjunction with the drawings and specific embodiments the locking withdrawing nut of the utility model is described in further detail:

As depicted in figs. 1 and 2, in this embodiment, the locking withdrawing nut of the utility model comprises nut body 3, nut body 3 inner chambers are provided with tapped hole 1, nut body 3 is being provided with 22 locking latches 4 that move back with being connected on the end face 2 that the part (not shown) fits, the locking following structure of latch 4 concrete employings of moving back: every locking latch 4 that moves back is by curve slope 8, skew back face 6 and shutoff face 7 system of enclosing that is connected curve slope 8 and skew back face 6 one ends form, skew back face 6 has anti-skidding sharp sword 5 with the joint of curve slope 8, direction when the true dip direction of skew back face 6 is tightened with nut body 3 is opposite, and the angle between skew back face 6 and the end face 2 is 60 °.

The using method of the locking withdrawing nut of the utility model is: be screwed in the process of bolt or screw rod at the locking withdrawing nut of model utility, because the direction the when true dip direction of skew back face 6 is tightened with nut body 3 is opposite, therefore, the locking latch 4 that moves back cuts little ice under the effect of curve slope 8, and after the locking withdrawing nut of the utility model is tightened, when to be the locking withdrawing nut of the utility model with the surface that is connected part be close to, the locking withdrawing nut of the utility model will be under the effect of anti-skidding sharp sword 5 and the frictional force that is connected between part surface increase, when pine moves back voluntarily if the locking withdrawing nut of the utility model this moment is vibrated, anti-skidding sharp sword 5 will be cut into the interior surface that is connected part rapidly, reaches to prevent that the locking withdrawing nut of the utility model is along the loose voluntarily purpose of moving back of the screw thread on bolt or the screw rod.

Above-described embodiment is described preferred implementation of the present utility model; be not that scope of the present utility model is limited; under the prerequisite that does not break away from the utility model design spirit; various distortion and improvement that those of ordinary skills make the technical solution of the utility model all should fall in the definite protection domain of the utility model claims.

Claims

1. a locking withdrawing nut comprises nut body (3), it is characterized in that: described nut body (3) is being provided with many locking latches (4) that move back with being connected on the end face (2) that part fits.

2. locking withdrawing nut according to claim 1, it is characterized in that: described nut body (3) is being provided with many locking latches (4) that move back on the end face (2) that part fits and is being meant with being connected, every locking latch (4) that moves back is by curve slope (8), skew back face (6) and shutoff face (7) system of enclosing that is connected curve slope (8) and skew back face (6) one ends form, described skew back face (6) has anti-skidding sharp sword (5) with the joint of curve slope (8), the true dip direction of described skew back face (6) is opposite with the direction of nut body (3) when tightening, and the angle between described skew back face (6) and the end face (2) is 40 °～80 °.

3. locking withdrawing nut according to claim 2 is characterized in that: the angle between described skew back face (6) and the end face (2) is 50 ° or 60 ° or 70 °.

4. according to the described locking withdrawing nut of arbitrary claim in the claim 1 to 3, it is characterized in that: described locking quantity of moving back latch (4) is 10～30.

5. locking withdrawing nut according to claim 4 is characterized in that: described locking quantity of moving back latch (4) is 12 or 14 or 16 or 20 or 22 or 26.