CN213039645U

CN213039645U - Anti-loosening fastener

Info

Publication number: CN213039645U
Application number: CN202021788971.4U
Authority: CN
Inventors: 钱成森
Original assignee: Zhejiang Qiangli Fastener Co ltd
Current assignee: Zhejiang Qiangli Fastener Co ltd
Priority date: 2020-08-24
Filing date: 2020-08-24
Publication date: 2021-04-23
Anticipated expiration: 2030-08-24

Abstract

The utility model discloses an anti-loosening fastener, including the screw rod with set up in the nut of screw rod up end, the cover is equipped with the gasket on the screw rod, the mounting groove has been seted up to the up end of gasket, vertical sliding connection has the locking lever in the mounting groove, a plurality of confessions have been seted up to the lower terminal surface of nut the locking groove of locking lever grafting embedding, it is a plurality of the locking groove is followed the circumferencial direction evenly distributed of nut, be provided with the drive on the gasket the actuating mechanism of the vertical motion of locking lever. Through the cooperation that utilizes locking lever and locking groove, realize that the position of nut circumferencial direction is injectd, the limited nut that prevents drives the screw rod and rotates to have the effect that prevents the bolt pine and take off.

Description

Anti-loosening fastener

Technical Field

The utility model relates to a fastener field, in particular to locking fastener that takes off.

Background

Fasteners, also known as standards, are a general term for a class of mechanical parts used to fasten two or more parts together as a unit. The fasteners mainly comprise screws, bolts, nuts, rivets and the like.

In the use process of the traditional bolt, the threads of the bolt are matched with the parts, so that the parts are fixed. However, when the bolt is used for a long time, the torque of the bolt is weakened, and the nut is easy to drive the screw rod to rotate. The connection stability of the bolt and the parts is affected, so that the problem that the bolt is easy to loosen exists.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an anti-loosening fastener has the effect that prevents the bolt pine and takes off.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides an anti-loosening fastener, includes the screw rod and set up in the nut of screw rod up end, the cover is equipped with the gasket on the screw rod, the mounting groove has been seted up to the up end of gasket, vertical sliding connection has the locking lever in the mounting groove, a plurality of confessions have been seted up to the lower terminal surface of nut the locking groove of locking lever grafting embedding, a plurality of locking groove is followed the circumferencial direction evenly distributed of nut, be provided with the drive on the gasket the actuating mechanism of locking lever vertical motion.

Through adopting above-mentioned technical scheme, accomplish the cooperation back when screw rod and spare part, the gasket is at the conflict of nut and is pressed tight spare part. Subsequently, the locking bar is driven to move vertically upward by the driving mechanism. And when the locking rod is completely inserted into the locking groove, the position limitation of the circumferential direction of the nut is realized. Through the cooperation that utilizes locking lever and locking groove, realize that the position of nut circumferencial direction is injectd, the limited nut that prevents drives the screw rod and rotates to have the effect that prevents the bolt pine and take off. Simultaneously, the cooperation of locking lever and locking groove can also prevent effectively that gasket and nut from taking place relative rotation to prevent that the gasket fish tail spare part has good guard action to the spare part. The quick locking of a plurality of locking grooves realizes the nut multi-angle to improve the convenient degree of use of bolt.

The utility model discloses a further set up to: the lateral wall of gasket seted up with the mounting hole that the locking groove is linked together, actuating mechanism include with mounting hole horizontal sliding connection's wedge, the upper end of wedge is the slope form setting, and the up end of wedge is used for contradicting the lower terminal surface of locking lever, it is right to be provided with in the mounting hole the wedge carries out the stop gear that the position was injectd.

By adopting the technical scheme, after the screw rod is matched with the part, the wedge block is pushed to move, and the wedge block enters the mounting hole. At this time, the upper end surface of the wedge block abuts against the lower end surface of the locking rod. Meanwhile, the locking rod moves vertically upwards under the interference of the wedge-shaped block. When the locking rod is inserted into the locking groove, the wedge block is fixed by the limiting mechanism, and the position of the nut in the circumferential direction is limited. Through setting up simple structure, the stable actuating mechanism of drive effect, realize the quick adjustment of locking lever position. Thereby make the locking lever can peg graft fast and imbed to locking inslot, and then improve the work efficiency when fixing the screw cap.

The utility model discloses a further set up to: the limiting mechanism comprises elastic helical teeth arranged on the lower end face of the wedge-shaped block, and tooth grooves matched with the helical teeth are formed in the inner wall of the lower end of the mounting hole.

Through adopting above-mentioned technical scheme, when the wedge enters into the in-process in the mounting hole gradually, the skewed tooth takes place elastic deformation under the conflict of mounting hole lower extreme inner wall. When the wedge block completely enters the mounting hole, the oblique teeth are embedded into the corresponding tooth grooves. Meanwhile, the inclined teeth reset under the action of self elastic force and form locking fit with the tooth grooves, and further position limitation of the wedge-shaped blocks is achieved. The limiting mechanism with ingenious structure, simple operation and good limiting effect is used for rapidly limiting the position of the wedge-shaped block, so that the working efficiency of fixing the nut is improved. Simultaneously, through the cooperation that utilizes skewed tooth and tooth's socket for the wedge can only carry out single motion, prevents effectively that the wedge from deviating from in the mounting hole, and then improves stop gear's spacing effect.

The utility model discloses a further set up to: the lower end part of the locking rod is arranged in an arch shape with the middle part protruding downwards.

Through adopting above-mentioned technical scheme, lower extreme tip is the locking lever of arch shape, has good guide effect for the locking lever can be quick, steady motion under the conflict of wedge up end. Thereby make the locking lever can peg graft fast and imbed to locking inslot, and then improve the work efficiency when fixing the screw cap.

The utility model discloses a further set up to: the screw rod is sleeved with an elastic pad positioned between the screw cap and the gasket.

Through adopting above-mentioned technical scheme, after screw rod and spare part accomplished the cooperation, the nut has the trend of moving towards the direction of keeping away from spare part under the elasticity effect of bullet pad. The abutting force between the threads of the screw and the threads of the part is effectively increased, so that the connection stability between the bolt and the part is improved, and the anti-loosening capability of the bolt is improved.

The utility model discloses a further set up to: and a plurality of elastic anti-skidding blocks are uniformly distributed on the lower end surface of the gasket.

Through adopting above-mentioned technical scheme, through setting up the non slipping spur, increase the frictional force between gasket and the spare part to improve the stability of being connected between gasket and the spare part. Simultaneously, the non-slip block can also effectively prevent the gasket fish tail spare part, has good protection effect to the spare part.

The utility model discloses a further set up to: the upper end face of the nut is provided with a abdicating groove for the socket wrench to be inserted and embedded.

Through adopting above-mentioned technical scheme, through setting up the groove of stepping down, the user can utilize hexagon socket head wrench to install the bolt to improve bolt mounting tool's suitability, and then improve the practicality of bolt.

To sum up, the utility model discloses following beneficial effect has:

1. the locking device has the advantages that the locking rod is matched with the locking groove, so that the position of the nut in the circumferential direction is limited, the nut is prevented from driving the screw rod to rotate, and the effect of preventing the bolt from loosening is achieved;

2. the driving mechanism with simple structure and stable driving effect is arranged, so that the position of the locking rod can be quickly adjusted, the locking rod can be quickly inserted and embedded into the locking groove, and the working efficiency of fixing the screw cap is improved;

3. the limiting mechanism with ingenious structure, simple operation and good limiting effect is arranged, so that the position of the wedge-shaped block is quickly limited, and the working efficiency of fixing the nut is improved;

4. through setting up the non slipping spur, increase the frictional force between gasket and the spare part to improve the stability of being connected between gasket and the spare part.

Drawings

FIG. 1 is a schematic view of the overall structure of the present embodiment;

FIG. 2 is a sectional view of the present embodiment;

fig. 3 is an enlarged schematic view of region a in fig. 2.

Reference numerals: 1. a screw; 2. a nut; 3. a yielding groove; 4. a spring pad; 5. a gasket; 6. anti-skid blocks; 7. mounting grooves; 8. a locking lever; 9. a locking groove; 10. a drive mechanism; 101. a wedge block; 11. Mounting holes; 12. a limiting mechanism; 121. helical teeth; 13. a tooth socket.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, an anti-loosening fastener comprises a screw rod 1 and a nut 2 horizontally and fixedly connected to the upper end surface of the screw rod 1, wherein a abdicating groove 3 for inserting an inner hexagonal wrench is formed in the upper end surface of the nut 2. The upper end part of the screw rod 1 is sequentially sleeved with an elastic cushion 4 and a gasket 5 from top to bottom, and a plurality of rubber antiskid blocks 6 are uniformly distributed on the lower end surface of the gasket 5.

When the above-mentioned assembling bolt is installed, the screw 1 is aligned with the installation position of the component. Then the inner hexagonal wrench is inserted into the abdicating groove 3 or the outer hexagonal wrench is sleeved on the screw cap 2. Then the inner hexagonal wrench or the outer hexagonal wrench is rotated to drive the nut 2 to drive the screw rod 1 to rotate synchronously, thereby realizing the matching of the screw rod 1 and parts.

After the screw 1 is matched with the part, the gasket 5 and the anti-slip block 6 are pressed against the part under the interference of the screw cap 2. Meanwhile, the elastic pad 4 is elastically deformed under the combined action of the nut 2 and the gasket 5. Meanwhile, the nut 2 has a tendency of moving towards a direction departing from the part under the elastic force of the elastic pad 4, so that the threads of the screw 1 are tightly matched with the threads of the part.

Referring to fig. 2 and 3, an installation groove 7 is formed in the upper end surface of the gasket 5, and a locking rod 8 is vertically slidably connected in the installation groove 7. The lower terminal surface of nut 2 is seted up a plurality of locking grooves 9 that supply locking rod 8 to peg graft the embedding, and a plurality of locking grooves 9 are along nut 2's circumferencial direction evenly distributed. Meanwhile, a driving mechanism 10 for driving the locking rod 8 to move vertically is fixedly connected to the pad 5.

After the screw rod 1 is matched with the parts, the locking rod 8 is driven by the driving mechanism 10 to move vertically upwards along the mounting groove 7. The circumferential position of the screw cap 2 is defined until the locking bar 8 is inserted completely into the locking groove 9.

Referring to fig. 2 and 3, the sidewall of the spacer 5 is opened with a mounting hole 11 communicating with the locking groove 9, and the driving mechanism 10 includes a wedge block 101 horizontally slidably coupled with the mounting hole 11. The upper end surface of the wedge block 101 is disposed in an inclined shape, and the upper end surface of the wedge block 101 is configured to abut against the lower end surface of the locking lever 8.

Referring to fig. 2 and 3, the lower end of the locking lever 8 is provided in an arch shape with a downwardly convex middle portion, and a position limiting mechanism 12 for limiting the position of the wedge block 101 is provided in the mounting hole 11. The limiting mechanism 12 comprises elastic helical teeth 121 fixedly connected to the lower end face of the wedge block 101, and a tooth groove 13 for matching the helical teeth 121 is formed in the inner wall of the lower end of the mounting hole 11.

When the screw 1 is completely matched with the part, the wedge block 101 is pushed to move, and the wedge block 101 enters the mounting hole 11. At this time, the upper end surface of the wedge block 101 abuts against the lower end surface of the lock lever 8. At the same time, the locking lever 8 moves vertically upwards against the wedge 101.

Subsequently, the helical teeth 121 are elastically deformed by interference with the inner wall of the lower end of the mounting hole 11. When the locking lever 8 is inserted into the locking groove 9, the helical teeth 121 are also inserted into the corresponding tooth grooves 13. Subsequently, the helical teeth 121 are reset under their own spring force and form a locking engagement with the gullets 13. Thereby achieving a positional definition of the wedge 101 and the locking bar 8 and thus of the nut 2 in the circumferential direction.

The specific embodiments are only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiments without inventive contribution as required after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. The utility model provides an anti-loosening fastener, includes screw rod (1) and set up in nut (2) of screw rod (1) up end, its characterized in that: the cover is equipped with gasket (5) on screw rod (1), mounting groove (7) have been seted up to the up end of gasket (5), vertical sliding connection has locking lever (8) in mounting groove (7), a plurality of confessions have been seted up to the lower terminal surface of nut (2) locking groove (9) of locking lever (8) grafting embedding, it is a plurality of locking groove (9) are followed the circumferencial direction evenly distributed of nut (2), be provided with the drive on gasket (5) locking lever (8) vertical motion's actuating mechanism (10).

2. The anti-loosening fastener as defined in claim 1, wherein: the lateral wall of gasket (5) seted up with mounting hole (11) that locking groove (9) are linked together, actuating mechanism (10) include with mounting hole (11) horizontal sliding connection's wedge (101), the upper end of wedge (101) is slope form setting, and the upper end of wedge (101) is used for conflicting the lower terminal surface of locking lever (8), it is right to be provided with in mounting hole (11) wedge (101) carry out position-defining stop gear (12).

3. The anti-loosening fastener as claimed in claim 2, wherein: the limiting mechanism (12) comprises elastic oblique teeth (121) arranged on the lower end face of the wedge-shaped block (101), and tooth grooves (13) matched with the oblique teeth (121) are formed in the inner wall of the lower end of the mounting hole (11).

4. The anti-loosening fastener according to claim 3, wherein: the lower end part of the locking rod (8) is arranged in an arch shape with the middle part protruding downwards.

5. The anti-loosening fastener as defined in claim 1, wherein: the screw rod (1) is sleeved with an elastic pad (4) which is positioned between the screw cap (2) and the gasket (5).

6. The anti-loosening fastener as defined in claim 5, wherein: and a plurality of elastic anti-skidding blocks (6) are uniformly distributed on the lower end surface of the gasket (5).

7. The anti-loosening fastener as defined in claim 6, wherein: the upper end face of the nut (2) is provided with a receding groove (3) for inserting and embedding an inner hexagonal wrench.