CN217873722U

CN217873722U - Locking screw that moves

Info

Publication number: CN217873722U
Application number: CN202222400009.4U
Authority: CN
Inventors: 胡永清
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-09-09
Filing date: 2022-09-09
Publication date: 2022-11-22
Anticipated expiration: 2032-09-09

Abstract

The utility model discloses a locking screw that moves, including nut and screw, the nut has the internal thread, the screw have with internal thread assorted external screw thread, the up end of nut is fixed with the loop forming element, it has a plurality of dogtooths to arrange on the inner wall of loop forming element, the tip protrusion of dogtooth is in internal thread place face, the screw stretches into the loop forming element internal rotation and makes external screw thread extrusion dogtooth, the dogtooth is for internal thread reverse rotation through the retardant external screw thread behind the deformation. The utility model discloses an extrusion action of external screw thread to the dogtooth makes the dogtooth produce deformation, under no exogenic action, because the restriction effect to the external screw thread after the dogtooth deformation, screw and nut can not produce relative rotation, have the effect that prevents the screw not hard up.

Description

Locking screw that moves

Technical Field

The utility model relates to a locking screw technical field has especially related to a locking screw that moves.

Background

The nut is usually used with the bolt, screw cooperation play and connect the effect of fastening spare part, in the long-time use of spare part, often can take place the phenomenon that the nut becomes flexible from the bolt and takes off, causes the connecting piece to disintegrate and drops.

Among the current nut anti loosening structure, can place the gasket between nut and screw usually, utilize the elasticity of gasket to withstand the nut, have locking effect in conventional operating mode. However, the gasket has poor anti-seismic capability in a high-vibration environment, is difficult to meet the anti-loosening requirement, has large tightening torque, and brings inconvenience to the maintenance and repair of various devices.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a locking screw that moves makes the dogtooth produce deformation through the extrusion action of external screw thread to the dogtooth, under no exogenic action, because the restriction to the external screw thread behind the dogtooth deformation, screw and nut can not produce relative rotation, have the effect that prevents the screw from becoming flexible.

In order to achieve the above purpose, the utility model adopts the technical scheme that: the utility model provides an anti-loosening locking screw, includes nut and screw, the nut has the internal thread, the screw have with internal thread assorted external screw thread, the up end of nut is fixed with the annular member, it has a plurality of dogtooths to arrange on the inner wall of annular member, the tip protrusion in internal thread place face of dogtooth, the screw stretches into the annular member internal rotation and makes the external screw thread extrusion the dogtooth, the dogtooth is blocked after deformation the external screw thread for the internal thread antiport.

Preferably, the upper end face of the ring-shaped member is flush with the upper end face of the nut.

As a further optimization, the upper end face of the nut is provided with a groove, the ring-shaped piece is embedded into the groove, the ring-shaped piece is favorably positioned, and the upper end face of the nut is easily flush with the upper end face of the ring-shaped piece.

As a further optimization, the horizontal cross section of the groove matches the outer contour surface of the ring.

Preferably, the outer contour of the ring-shaped element is circular, elliptical or polygonal, preferably circular.

As a further optimization, a pair of positioning grooves is formed in the nut and located in the groove, a pair of positioning columns is arranged on the lower end face of the annular piece and embedded into the pair of positioning grooves respectively, and the annular piece has better positioning and anti-rotation effects when the outer contour of the annular piece is circular.

As a further optimization, the annular member has a plurality of gaps at the teeth, and the gaps can facilitate the sliding of the external thread of the screw.

Preferably, the annular member is made of hard metal, preferably steel.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the convex teeth are deformed through the extrusion action of the external threads on the convex teeth, and under the condition of no external force, the screw and the nut cannot rotate relatively due to the limiting effect of the deformed convex teeth on the external threads, so that the effect of preventing the screw from loosening is achieved.

2. The upper end face of the nut is provided with a groove, and the annular piece is embedded into the groove, so that the annular piece is positioned on the nut.

Drawings

Fig. 1 is a mounting structure diagram of the present invention.

Fig. 2 is a schematic structural view of the nut and the ring-shaped member before assembly.

Fig. 3 is a schematic sectional view of the nut and ring assembly of the present invention after assembly.

Fig. 4 is a schematic view of a ring member according to another embodiment of the present invention.

Fig. 5 is a block diagram of a ring unit according to yet another embodiment of the present invention.

Fig. 6 is a structural view of a nut according to another embodiment of the present invention.

Fig. 7 is a schematic view of the state of the protruding teeth before the ring member is locked.

Fig. 8 is a schematic view of the state of the protruding teeth after the ring member is locked.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 to 3, a locking screw for preventing loosening includes a nut 3 and a screw 1, the nut 3 has an internal thread 31, the screw 1 has an external thread 11 matching with the internal thread 31, an annular member 2 is fixed on an upper end surface of the nut 3, the annular member 2 can be made of steel, a plurality of convex teeth 21 pointing to a central axis of the annular member are arranged on an inner wall of the annular member, ends of the convex teeth 21 protrude out of a surface where the internal thread 31 is located, the screw 1 extends into the annular member 2 to rotate so that the external thread 11 extrudes the convex teeth 21, and the convex teeth 21 are deformed to block the external thread 11 from rotating in the opposite direction relative to the internal thread 31.

The loop forming element is located the nut, keep away from a terminal surface of loop forming element with treating locking object looks butt with the nut, the screw passes from the opposite side of treating locking object and treats locking object, and stretch into nut and loop forming element in proper order, through swivel nut or screw, make internal thread and external screw thread matching lock, in this process, because the effect of external screw thread and dogtooth, the relative displacement takes place for the two, can make the dogtooth produce deformation to the extrusion action of dogtooth by the external screw thread, also can make the dogtooth at the shape and the external screw thread direction of rotation phase-match of loop forming element, be favorable to the external screw thread to carry out relative rotation, as shown in fig. 7 to 8, for example: when the screw is locked clockwise relative to the nut, the convex teeth can deform, and the orientation of the convex teeth can obstruct the reverse rotation of the screw. After screw and nut locking, on the one hand, because the interact of internal and external screw thread, screw and nut can not produce the ascending relative displacement of axis direction, and on the other hand, under no exogenic action, because the restriction effect to external screw thread after the dogtooth deformation, consequently screw and nut can not produce relative rotation, prevents that the screw is not hard up, can avoid to sum up because the screw that circumstances such as vibrations lead to is not hard up.

Of course the utility model discloses in, the axis of the convex tooth can not directional loop forming element can directly set the convex tooth to as the state shown in fig. 8, and the directional rotation direction of complying with the external screw thread of screw of this state convex tooth makes things convenient for screw in, can prevent the screw opposite direction rotation simultaneously.

The upper end face of the annular member 2 protrudes above the upper end face of the nut 3 or is flush with the upper end face of the nut 3, preferably the upper end faces of the two are flush with each other.

As shown in fig. 2 to 3, the upper end surface of the nut 3 has a groove 30a, and the annular member 2 is embedded in the groove 30a, so that the upper end surface of the nut 3 is flush with the upper end surface of the annular member 2; the nut 3 has, at the edge of the groove 30a, a cutting edge 30b which facilitates the insertion of the annular element 2 in the groove 30 a. Through the up end shaping recess at the nut, can arrange the ring member in the recess, for example can fix in punching the recess through the form of punching press with the ring member for the ring member becomes an organic whole with the nut, can not produce relative rotation between the two, makes things convenient for subsequent operation, also makes things convenient for the locking action to go on.

The horizontal section of the groove 30a is matched with the outer contour surface of the annular member 2, so that the embedding stability of the groove and the annular member can be ensured. The outer contour of the ring 2 is circular, oval or polygonal, preferably circular, but may also be square as shown in fig. 5, whereby rotation of the ring relative to the nut is prevented by the limitation of the square.

When the outer contour surface of the annular piece is circular, the annular piece can be further limited to rotate relative to the nut when the screw is locked through the limiting effect of the positioning columns and the positioning grooves. As shown in fig. 6, a pair of positioning grooves 30c is formed in the groove 30a of the nut 3, a pair of positioning posts (not shown) is disposed on the lower end surface of the circular ring-shaped member 2, and the positioning posts are respectively embedded in the positioning grooves 30c, so that the nut has better positioning and rotation preventing effects when the outer contour of the ring-shaped member 2 is circular.

As shown in fig. 4, the annular member 2 has a plurality of gaps 20 at the teeth 21, and the existence of the gaps 20 facilitates the sliding of the external thread 11 of the screw 1.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides an anti-loosening locking screw, includes nut and screw, the nut has the internal thread, the screw have with internal thread assorted external screw thread, its characterized in that, the up end of nut is fixed with the annular member, it has a plurality of dogtooths to arrange on the inner wall of annular member, the tip protrusion in internal thread place face of dogtooth, the screw stretches into the annular member internal rotation and makes the external screw thread extrudees the dogtooth, the dogtooth is blocked after the deformation the external screw thread for internal thread reverse rotation.

2. The anti-loosening locking screw according to claim 1, wherein an upper end surface of the ring member is flush with an upper end surface of the nut.

3. The locking screw as claimed in claim 1 or 2, wherein the nut has a groove on an upper end thereof, and the ring member is fitted into the groove.

4. The anti-loosening locking screw according to claim 3, wherein the horizontal cross section of the groove matches the outer contour surface of the ring.

5. The locking screw as claimed in claim 1, 2 or 4, wherein the outer contour of the annular member is circular, elliptical or polygonal.

6. The locking screw as claimed in claim 3, wherein a pair of positioning grooves are formed in the groove of the nut, a pair of positioning posts are formed on the lower end surface of the ring member, and the pair of positioning posts are respectively inserted into the pair of positioning grooves.

7. The anti-loosening locking screw according to claim 1, wherein the ring member has a plurality of gaps at the teeth.

8. The anti-loosening locking screw according to claim 1, wherein the ring member is steel.