CN219639223U

CN219639223U - Self-locking fastener

Info

Publication number: CN219639223U
Application number: CN202321294899.3U
Authority: CN
Inventors: 史宇平
Original assignee: Ningbo Yuema Fastener Co ltd
Current assignee: Ningbo Yuema Fastener Co ltd
Priority date: 2023-05-24
Filing date: 2023-05-24
Publication date: 2023-09-05
Anticipated expiration: 2033-05-24

Abstract

The utility model relates to a self-locking fastener, which belongs to the technical field of fasteners and comprises a threaded rod and a self-locking assembly, wherein a locking plate is arranged on the threaded rod, the self-locking assembly comprises a self-locking plate connected to a component and a one-way limiting piece arranged on the self-locking plate, the threaded rod passes through the self-locking plate, the self-locking plate does not synchronously rotate with the threaded rod, a locking groove is formed in one side, close to the self-locking plate, of the locking plate, and the one-way limiting piece is inserted into the locking groove to limit the reverse rotation of the threaded rod. The utility model has the effect of improving the stability of the fastening piece after being fastened.

Description

Self-locking fastener

Technical Field

The utility model relates to the technical field of fasteners, in particular to a self-locking fastener.

Background

Fasteners are a type of mechanical part that is widely used as a fastening connection, typically for connecting two or more components. Industrial equipment is typically assembled from a plurality of components, and the components are typically fastened together using fasteners. Because most fasteners have no self-locking function, industrial equipment can cause the fastening stability of the fasteners to be reduced and loose due to the conditions of load bearing change, vibration, impact and the like in the transportation or operation process, and if the loosening condition is not observed in time, the fasteners can fall off along with the long-time vibration, so that the normal operation of the industrial equipment is affected.

Disclosure of Invention

In order to improve stability of a fastened fastener, the utility model provides a self-locking fastener.

The utility model provides a self-locking fastener which adopts the following technical scheme:

the utility model provides a self-locking fastener, includes threaded rod and auto-lock subassembly, be provided with the locking plate on the threaded rod, the auto-lock subassembly including connect on the part the auto-lock board and set up in from the one-way spacing piece on the locking plate, the threaded rod passes the auto-lock board, the auto-lock board not with the threaded rod synchronous rotation, the locking plate is close to from one side of locking plate has seted up the locking groove, one-way spacing piece inserts in the locking groove right the reverse rotation of threaded rod is spacing.

By adopting the technical scheme, when two parts are fastened, the self-locking plate is connected to one part, and the threaded rod passes through the self-locking plate to be connected to the other part in a threaded manner. Along with the rotation of threaded rod, the locking plate will remove to being close to the direction of from the locking plate, when the locking plate moved to the position department of auto-lock plate, one-way spacing piece was spacing to the reverse rotation of threaded rod in will inserting the locking groove and is formed the condition of reverse locking, because from the locking plate by spacing difficult emergence rotation on corresponding part this moment, therefore the threaded rod is difficult for by reverse rotation, and then fastener fastening connection back is more stable.

Optionally, the locking groove is along the forward direction of rotation of threaded rod is to being close to the direction slope of auto-lock board, one-way spacing piece slope set up in on the auto-lock board, the incline direction of one-way spacing piece with the incline direction of locking groove is unanimous.

Through adopting above-mentioned technical scheme, locking groove and the equal slope setting of one-way spacing piece for when the threaded rod forward rotated, one-way spacing piece can take place to deform and step down, but when reverse rotation, one-way spacing piece butt in the cell wall of locking groove, be difficult for rotating, and then form locking state to the reverse rotation of threaded rod, make the threaded rod be difficult for taking place not hard up.

Optionally, the locking groove is provided with a plurality of locking plates at intervals circumferentially, the unidirectional limiting sheets are provided with a plurality of locking plates circumferentially at intervals circumferentially, and the unidirectional limiting sheets are inserted into the corresponding locking grooves.

Through adopting above-mentioned technical scheme, compare and set up a locked groove and one-way spacing piece, the threaded rod needs to rotate the round just can make one-way spacing piece insert the locked inslot spacing, sets up a plurality of with locked groove and one-way spacing piece for the threaded rod rotates arbitrary angle alright reverse rotation by spacing, and is more convenient. In addition, one of the unidirectional limiting segments is cracked in time to play a role, but other unidirectional limiting pieces play a role in limiting the reverse rotation of the threaded rod, so that the reverse rotation of the threaded rod is limited more stably.

Optionally, the self-locking assembly further comprises a fixing sleeve installed on the component, a sliding groove is formed in one side, close to the locking plate, of the fixing sleeve, the self-locking plate is installed in the sliding groove in a sliding mode, and a spring for driving the self-locking plate to slide towards the direction close to the locking plate is installed in the fixing sleeve.

Through adopting above-mentioned technical scheme, the auto-lock board is limited to be located corresponding part through fixed sleeve, when the threaded rod needs to be demolishd, pushes down from the lock board downwards and makes from the lock board slide compression spring in the inslot that slides, and then makes one-way spacing piece break away from in the locking groove, releases the spacing to threaded rod reversal for the threaded rod can be normally reverse dismantlement. The spring is arranged to apply a force to the unidirectional limiting piece, so that the unidirectional limiting piece is more stable in the locking groove, and further the reverse rotation limiting of the threaded rod is more stable and reliable.

Optionally, a plug-in post that is limited to the circumferential rotation of the fixed sleeve on the insertion part is disposed on a side of the fixed sleeve facing away from the locking plate.

Through adopting above-mentioned technical scheme, when installing fixed sleeve on corresponding part, only need insert the spliced pole in the hole that the part corresponds can, because the threaded rod need pass fixed sleeve when connecting, spliced pole after inserting the part this moment forms two-point location with the threaded rod for fixed sleeve's circumferential direction is spacing, and then fixed sleeve makes difficult and threaded rod synchronous rotation.

Optionally, be provided with on the outer wall of auto-lock board and order about from the locking board to keeping away from the pressing plate that locking board one side slided, pressing plate protrusion in the groove that slides, fixed sleeve sets up one side in the groove that slides is seted up and is supplied pressing plate gliding pressing groove.

Through adopting above-mentioned technical scheme, because the push plate protrusion is in the groove of sliding, when relieving the spacing of one-way spacing piece to threaded rod reversal, can press the push plate with the finger, make the push plate slide in the groove of pressing, whole from the lock plate to the direction removal of keeping away from the lock plate this moment, and then the unblock is more convenient.

Optionally, a limiting plate for limiting the pressing plate in the pressing groove is fixedly installed at the notch of the pressing groove.

By adopting the technical scheme, the pressing plate always has a trend of moving towards the bottom direction away from the sliding groove under the action of the spring, so that the pressing plate is easy to separate from the pressing groove. The limiting plate limits the notch of the pressing groove, so that the pressing plate is not easy to separate from the pressing groove.

Optionally, a driving head which is matched with the wrench tool to rotate is arranged on one side of the locking plate, which is away from the self-locking plate.

Through adopting above-mentioned technical scheme, when fastening, can drive the drive head through spanner instrument and rotate, and then make the threaded rod rotate, compare and rotate the threaded rod more convenient and fast depending on the hand completely.

In summary, the present utility model includes at least one of the following beneficial technical effects:

1. the locking groove and the unidirectional limiting piece are obliquely arranged, so that when the threaded rod rotates forwards, the unidirectional limiting piece can deform to give way, but when the threaded rod rotates backwards, the unidirectional limiting piece is abutted against the groove wall of the locking groove, and the locking piece is not easy to rotate to form a locking state, at the moment, the self-locking plate is limited on a corresponding part and is not easy to rotate, the threaded rod is not easy to rotate backwards, and further the fastening piece is more stable and is not easy to loosen after being fastened and connected;

2. when the threaded rod needs to be dismantled, the self-locking plate is pressed downwards to enable the self-locking plate to slide in the sliding groove to compress the spring, so that the one-way limiting piece is separated from the locking groove, the limiting of the reverse rotation of the threaded rod is relieved, the threaded rod can be normally reversely dismantled, and the reverse rotation locking of the threaded rod is relieved conveniently;

3. the spring is arranged to apply a force to the unidirectional limiting piece, so that the unidirectional limiting piece is more stable in the locking groove, and further the reverse rotation limiting of the threaded rod is more stable and reliable.

Drawings

FIG. 1 is a block diagram of a self-locking fastener in accordance with an embodiment of the present utility model.

Fig. 2 is a structural view of a locking plate in an embodiment of the present utility model.

Fig. 3 is an exploded view of a self-locking assembly in an embodiment of the present utility model.

Reference numerals illustrate: 1. a threaded rod; 2. a self-locking assembly; 21. a self-locking plate; 211. pressing the plate; 22. a unidirectional limiting piece; 23. a fixed sleeve; 231. a slip groove; 232. a pressing groove; 233. a plug-in column; 24. a spring; 25. a deformation gap; 26. a limiting plate; 3. a locking plate; 31. a locking groove; 4. a drive head.

Detailed Description

The utility model is described in further detail below with reference to fig. 1-3.

The embodiment of the utility model discloses a self-locking fastener. Referring to fig. 1, a self-locking fastener includes a threaded rod 1, a self-locking assembly 2, a locking plate 3, and a driver head 4. The locking plate 3 is integrally formed at one end of the threaded rod 1, and the driving head 4 is positioned at one side of the locking plate 3 away from the threaded rod 1 and integrally formed with the locking plate 3. The driving head 4 can be matched with a spanner tool to drive the threaded rod 1 to rotate. When in connection, the self-locking assembly 2 is arranged on one part, and then one end of the threaded rod 1, which is away from the driving head 4, is inserted into and penetrates through the self-locking assembly 2 to be arranged on the other part in a threaded manner, so that the two parts are fastened. Wherein, the self-locking assembly 2 cooperates with the locking plate 3 to limit the reverse rotation of the threaded rod 1, so that the threaded rod 1 is impacted or vibrated and is not easy to loosen due to reverse rotation.

Referring to fig. 2, the locking plate 3 is provided with a locking groove 31 at one side thereof adjacent to the threaded rod 1, and the locking groove 31 is inclined in a direction away from the driving head 4 in a forward rotation direction of the threaded rod 1. The lock plate 3 is provided with a plurality of lock grooves 31 at even intervals in the axial direction around the threaded rod 1 as a rotation axis.

Referring to fig. 2 and 3, the self-locking assembly 2 includes a self-locking plate 21, a one-way limiting piece 22, a fixing sleeve 23, and a spring 24. The unidirectional limiting piece 22 is arranged on the self-locking plate 21 and can be clamped in the locking groove 31 to limit the reverse rotation of the threaded rod 1. The self-locking plate 21 is slidably mounted in the solid sleeve, and the spring 24 is mounted in the fixed sleeve 23, so that the self-locking plate 21 always has a tendency to move towards the direction close to the locking plate 3, and the unidirectional limiting piece 22 is more stable after being inserted into the locking groove 31. When it is necessary to release the limit of the reverse rotation of the threaded rod 1, the self-locking plate 21 may be pushed to slide in the fixing sleeve 23, and the one-way limiting piece 22 may be disengaged from the locking groove 31. The fixed sleeve 23 is mounted on the corresponding part and limited in the circumferential direction, and is not easy to rotate synchronously with the threaded rod 1. Wherein the end of the threaded rod 1 facing away from the drive head 4 passes through the self-locking plate 21 and the fixing sleeve 23.

Referring to fig. 2 and 3, a plurality of unidirectional limiting plates 22 and self-locking plates 21 are circumferentially and uniformly spaced by using the threaded rod 1 as a rotation shaft, wherein the number of locking grooves 31 is a multiple of the unidirectional limiting plates 22, and when any one unidirectional limiting plate 22 is located in the locking groove 31, the rest unidirectional limiting plates 22 are located in the corresponding locking groove 31.

One side of the unidirectional limiting piece 22 is welded on the self-locking plate 21, and the other side extends obliquely in the direction approaching the locking groove 31. That is, the inclination direction of the one-way restriction piece 22 coincides with the inclination direction of the locking groove 31. A deformation gap 25 is arranged between the unidirectional limiting piece 22 and the self-locking plate 21 after being inclined. When the threaded rod 1 rotates forwards, the part between the two locking grooves 31 extrudes the unidirectional limiting piece 22 to move towards the deformation gap 25 to deform for yielding; when the threaded rod 1 rotates reversely, the unidirectional sheet abuts against the groove wall of the locking groove 31 to limit, so that the threaded rod 1 is not easy to rotate reversely.

Referring to fig. 2 and 3, a sliding groove 231 into which the self-locking plate 21 enters and slides is formed in a side of the fixing sleeve 23 adjacent to the self-locking plate 21, and the threaded rod 1 passes through the sliding groove 231. The spring 24 is located in the sliding groove 231, the spring 24 is sleeved on the threaded rod 1, one end of the spring 24 is abutted against the bottom of the sliding groove 231, and the other end of the spring is abutted against one side of the self-locking plate 21, which is away from the unidirectional limiting piece 22.

The outer wall of the self-locking plate 21 is integrally formed with a pressing plate 211, and the pressing plate 211 extends outwards along the radial direction of the threaded column and protrudes out of the sliding groove 231 to be exposed outside the fixed sleeve 23. In this embodiment, four pressing plates 211 are preferably disposed, and the four pressing plates 211 are circumferentially and uniformly arranged on the outer wall of the self-locking plate 21 at intervals by taking the threaded rod 1 as a rotation axis. One side of the fixed sleeve 23 provided with the sliding groove 231 is provided with a pressing groove 232 for the pressing plate 211 to insert and slide, and the pressing groove 232 is communicated with the sliding groove 231. Since the pressing plates 211 are provided in four, the pressing grooves 232 are also provided in four, and the four pressing grooves 232 correspond to the four pressing plates 211 one by one. When the reverse rotation limit of the threaded rod 1 needs to be released, the pressing plate 211 can be pressed down by a finger, so that the self-locking plate 21 moves to compress the spring 24 in a direction approaching to the spring 24, and further unlocking is more convenient.

Referring to fig. 2 and 3, a limiting plate 26 is welded to a side of the fixing sleeve 23 where the pressing groove 232 is formed, and the limiting plate 26 shields a notch of the pressing groove 232 and limits the pressing plate 211 in the pressing groove 232. And the self-locking plate 21 is not easily separated from the sliding groove 231. The fixed sleeve 23 is provided with a plurality of plug posts 233 integrally formed on one side facing away from the self-locking plate 21, and the plug posts 233 are circumferentially arranged at intervals by taking the threaded rod 1 as a rotating shaft. The corresponding parts are provided with slots for inserting the inserting posts 233, so that the circumferential rotation of the fixing sleeve 23 is limited, and when the threaded rod 1 rotates, the fixing sleeve 23 is not easy to synchronously rotate the threaded rod 1.

The implementation principle of the self-locking fastener provided by the embodiment of the utility model is as follows: when the two parts are connected, the fixing sleeve 23 is inserted into one of the parts through the inserting posts 233, and the fixing sleeve 23 is limited on the part in the circumferential direction under the action of the inserting posts 233 so as not to easily rotate. The threaded rod 1 is then threaded through the self-locking plate 21 and the fixing sleeve 23 onto the other component.

As the threaded rod 1 rotates, the lock plate 3 moves in a direction approaching the self-locking plate 21. Because the unidirectional limiting piece 22 and the locking grooves 31 are all obliquely arranged, when the threaded rod 1 rotates forwards, the unidirectional limiting piece 22 is extruded by the part between the two adjacent locking grooves 31 to deform and yield to the deformation gap 25, interference is not generated on the forward rotation of the threaded rod 1, and when the part between the two locking grooves 31 passes through the unidirectional limiting piece 22 and the unidirectional limiting piece 22 is positioned in the range of the locking groove 31, the unidirectional limiting piece 22 automatically resets and springs into the locking groove 31 to form locking. When the threaded rod 1 is reversely rotated, the one-way limiting piece 22 is abutted against the groove wall of the locking groove 31 to limit the rotation of the threaded rod 1, so that the threaded rod 1 is not easy to reversely rotate to loosen, and the stability after fastening is improved.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. A self-locking fastener, characterized in that: including threaded rod (1) and auto-lock subassembly (2), be provided with locking plate (3) on threaded rod (1), auto-lock subassembly (2) including connect auto-lock board (21) on the part and set up in one-way spacing piece (22) on auto-lock board (21), threaded rod (1) pass auto-lock board (21), auto-lock board (21) not with threaded rod (1) synchronous rotation, locking plate (3) are close to one side of auto-lock board (21) has been seted up locking groove (31), one-way spacing piece (22) are inserted in locking groove (31) right reverse rotation of threaded rod (1) is spacing.

2. A self-locking fastener as claimed in claim 1 wherein: the locking groove (31) inclines towards the direction close to the self-locking plate (21) along the forward rotation direction of the threaded rod (1), the one-way limiting piece (22) is obliquely arranged on the self-locking plate (21), and the inclination direction of the one-way limiting piece (22) is consistent with that of the locking groove (31).

3. A self-locking fastener as claimed in claim 2 wherein: the locking grooves (31) are circumferentially spaced on the locking plate (3), the unidirectional limiting sheets (22) are circumferentially spaced on the self-locking plate (21), and the unidirectional limiting sheets (22) are inserted into the corresponding locking grooves (31).

4. A self-locking fastener as claimed in claim 1 wherein: the self-locking assembly (2) further comprises a fixing sleeve (23) arranged on the component, a sliding groove (231) is formed in one side, close to the locking plate (3), of the fixing sleeve (23), the self-locking plate (21) is slidably arranged in the sliding groove (231), and a spring (24) for driving the self-locking plate (21) to slide towards the direction close to the locking plate (3) is arranged in the fixing sleeve (23).

5. A self-locking fastener as defined in claim 4, wherein: one side of the fixed sleeve (23) deviating from the locking plate (3) is provided with a plug-in column (233) which is arranged on the plug-in component and limits the circumferential rotation of the fixed sleeve (23).

6. A self-locking fastener as defined in claim 4, wherein: the self-locking device is characterized in that a pressing plate (211) for driving the self-locking plate (21) to slide towards one side far away from the locking plate (3) is arranged on the outer wall of the self-locking plate (21), the pressing plate (211) protrudes out of the sliding groove (231), and a pressing groove (232) for enabling the pressing plate (211) to slide is formed in one side of the sliding groove (231) in the fixed sleeve (23).

7. A self-locking fastener as defined in claim 6, wherein: and a limiting plate (26) for limiting the pressing plate (211) in the pressing groove (232) is fixedly arranged at the notch of the pressing groove (232).

8. A self-locking fastener as claimed in claim 1 wherein: one side of the locking plate (3) deviating from the self-locking plate (21) is provided with a driving head (4) which is matched with a spanner tool to rotate.