CN210565673U

CN210565673U - Locking screw

Info

Publication number: CN210565673U
Application number: CN201921166266.8U
Authority: CN
Inventors: 彭禄宪; 李培琴
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-24
Filing date: 2019-07-24
Publication date: 2020-05-19
Anticipated expiration: 2029-07-24

Abstract

The utility model relates to a technical field of fastener discloses a locking screw, including nut and screw rod, nut and screw rod cooperation are connected, and a plurality of's locking hole has been seted up to the side of nut, are equipped with kicking block, elastic component and fixed block from inside to outside in proper order in the locking hole, and the front portion of kicking block is the wedge shape, and the anterior protrusion of kicking block is in the medial surface of nut, fixed block and nut fixed connection, and the pole of screw rod is equipped with the position on the body, the fixed recess that quantity all is unanimous with the kicking block, and the shape of fixed recess is unanimous with the front portion of kicking block, the utility model discloses simple to use, locking effect is good, can effectually prevent that the backing up after screw rod and the nut locking is not hard up, the utility model discloses if be used for fixed agricultural rotary cultivator blade when the environment of.

Description

Locking screw

Technical Field

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

Background

The fastener is a mechanical part which is used for fastening connection and has wide application, the use industry is wide, the fastener comprises screws, bolts, nuts and other parts, wherein the screws and the nuts are used for being matched with each other to play a locking role, a locking part is loosened after the ordinary screws are locked due to factors such as vibration, collision and the like, the locking screws are required to be adopted in important occasions to ensure the reliability of nut locking, although some anti-loosening nut structures are arranged in the prior art, the structure is only simple, a locking hole is formed in the side face of the nut, and a locking screw is additionally arranged in the locking hole.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a locking screw to the locking effect of screw is poor among the solution prior art, the reliability is low.

For realizing above-mentioned technical purpose, reach above-mentioned technological effect, the utility model discloses a locking screw, included nut and screw rod, nut and screw rod cooperation connect, the side of nut seted up a plurality of locking hole, the locking hole in be equipped with kicking block, elastic component and fixed block from inside to outside in proper order, the front portion of kicking block be the wedge shape, the anterior protrusion in the medial surface of nut of kicking block, fixed block and nut fixed connection, the pole of screw rod on be equipped with position, quantity all with the fixed recess of kicking block unanimity, the shape of fixed recess unanimous with the front portion of kicking block.

Further, the front portion of the ejector block comprises a vertical blocking surface, a first inclined surface and a second inclined surface, the angle between the first inclined surface and the vertical blocking surface ranges from 45 degrees to 60 degrees, the angle between the second inclined surface and the vertical blocking surface ranges from 45 degrees to 60 degrees, the angle between the inclined surfaces is too small and too high, the angle is too small, the ejector block is not easy to eject out of the fixed groove through the screw rod in the screwing process, the angle is too large, and the locking effect of the screw is not good.

Furthermore, the fixed block is connected with the nut in a welding mode or in a threaded mode.

When the fixed block and the nut are welded, the locking screw is in a completely locked state after being screwed, and can not be rotated backwards.

Furthermore, the side surface of the nut is symmetrically provided with two locking holes, and the rod body on the screw rod is correspondingly provided with two fixing grooves.

Further, the elastic part is a spring.

Furthermore, the locking hole is a radial vertical hole.

Furthermore, the depth of the fixed groove is 1/8-1/5 of the diameter of the screw.

The number and depth of the upper fixing grooves of the screw rod should be set properly, and too much number and depth can reduce the strength of the screw rod, so that the load of the screw is reduced.

Furthermore, the thickness of the nut is 0.7 cm-1 cm.

Compared with the common nut, the nut is thickened to a certain extent, so that the nut has high bearing capacity, and meanwhile, the locking hole formed in the side face of the nut cannot greatly influence the loading capacity of the nut.

The utility model discloses following beneficial effect has:

1. the utility model discloses a set up kicking block and elastic component and make screw rod and nut in the in-process of screwing, the kicking block can stretch out and draw back owing to be connected the elastic component, when screw rod and nut locking fastening, the front portion and the fixed recess of kicking block cooperate the effectual back and not hard up that prevents the screw rod.

2. The wedge-shaped shape design enables the nut and the screw rod to be screwed in the rotating process only along the screwing direction, when the nut rotates backwards, the vertical blocking surface at the front part of the ejector block is clamped with the right-angle surface of the fixed groove, the nut is prevented from rotating backwards, and the nut can be effectively prevented from loosening backwards after being screwed.

3. The utility model discloses simple to use, locking is effectual, can effectually prevent that the backing after screw rod and the nut locking is not hard up, the utility model discloses if be used for fixed agricultural rotary cultivator blade when the environment of load ratio is stronger, long-time vibration, still have very high reliability.

Drawings

Fig. 1 is a schematic structural diagram of the nut of the present invention.

Fig. 2 is a schematic structural diagram of the top block of the present invention.

Fig. 3 is a schematic structural view of the screw of the present invention.

Fig. 4 is a schematic cross-sectional view of the screw rod body of the present invention.

Description of the main part symbols:

1. a nut; 2. a screw; 3. a top block; 31. a vertical baffle surface; 32. a first inclined surface; 33. a second inclined surface; 4. an elastic member; 5. a fixed block; 6. fixing the groove; 7. and (4) locking holes.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

As shown in fig. 1-4, the utility model discloses a locking screw, including nut 1 and screw rod 2, nut 1 and screw rod 2 cooperate and connect, the side symmetry of nut 1 sets up two locking hole 7, be equipped with kicking block 3 from inside to outside in the locking hole 7 in proper order, elastic component 4 and fixed block 5, the front portion of kicking block 3 is wedge-shaped, the anterior protrusion in the medial surface of nut 1 of kicking block 3, fixed block 5 and nut 1 fixed connection, the pole body of screw rod 2 is equipped with the fixed recess 6 that the position, quantity all are unanimous with kicking block 3, the shape of fixed recess is unanimous with the front portion of kicking block 3, the quantity of fixed recess 6 also is two, the shape of fixed recess is unanimous with the front portion of kicking block 3, the front portion of kicking block 3 includes perpendicular fender surface 31, first inclined plane 32 and second inclined plane 33, the angle of first inclined plane 32 and perpendicular fender surface 31 is 60, the angle between the second inclined plane 33 and the vertical blocking plane 31 is 45 degrees, the fixed block 5 is in threaded connection with the nut 1, and when the locking screw needs to rotate backwards after being screwed, the fixed block 5 needs to be screwed out of the locking hole 7 first, and the ejector block 3 is taken out, so that the locking screw can rotate backwards.

The elastic part 4 is a spring, the locking hole 7 is a radial vertical hole, the depth of the fixing groove 6 is 1/6 of the diameter of the screw rod 2, the number and the depth of the upper fixing groove 6 of the screw rod 2 are set properly, the strength of the screw rod 2 can be reduced when the number is too large and the depth is too large, the load of the locking screw is reduced, and the thickness of the nut 1 is 0.8 cm.

The utility model discloses the use:

in the process of screwing the screw rod 2 and the nut 1, the screw rod 2 ejects the top block 3 from the mounting groove, the top block 3 can stretch out and draw back due to the connection of the elastic piece 4, when the screw rod 2 and the nut 1 are locked and fastened, the front part of the top block 3 and the fixing groove 6 are matched to effectively prevent the screw rod 2 from backing up and loosening, the wedge-shaped shape design enables the nut 1 and the screw rod 2 to be screwed in the rotating process only along the screwing direction, when the nut 1 rotates to back up, the vertical blocking surface 31 at the front end of the top block 3 and the right-angle side of the fixing groove 6 are clamped with each other, the back-up rotation of the nut 1 is prevented, and the back-up rotation can be effectively prevented after the nut 1.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.

Claims

1. The utility model provides a locking screw, a serial communication port, has included nut and screw rod, nut and screw rod cooperation be connected, the side of nut seted up a plurality of locking hole, the locking hole in from inside to outside be equipped with kicking block, elastic component and fixed block in proper order, the front portion of kicking block be the wedge shape, the anterior protrusion in the medial surface of nut of kicking block, fixed block and nut fixed connection, the pole body of screw rod on be equipped with position, quantity all with the fixed recess of kicking block looks unanimity, the shape of fixed recess and the anterior of kicking block unanimous.

2. A locking screw as claimed in claim 1, wherein: the front part of the top block comprises a vertical blocking surface, a first inclined surface and a second inclined surface, the angle between the first inclined surface and the vertical blocking surface is 45-60 degrees, and the angle between the second inclined surface and the vertical blocking surface is 45-60 degrees.

3. A locking screw as claimed in claim 2, wherein: the fixed block is connected with the nut in a welding mode or in a threaded mode.

4. A locking screw as claimed in claim 3, wherein: the side surface of the nut is symmetrically provided with two locking holes.

5. A locking screw as claimed in claim 4, wherein: the elastic piece is a spring.

6. A locking screw as claimed in claim 5, wherein: the locking hole is a radial vertical hole.

7. A locking screw as claimed in claim 6, wherein: the depth of the fixed groove is 1/8-1/5 of the diameter of the screw.

8. A locking screw as claimed in claim 7, wherein: the thickness of the nut is 0.7 cm-1 cm.