CN214661436U - Flower card formula check bolt subassembly - Google Patents
Flower card formula check bolt subassembly Download PDFInfo
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- CN214661436U CN214661436U CN202120726594.XU CN202120726594U CN214661436U CN 214661436 U CN214661436 U CN 214661436U CN 202120726594 U CN202120726594 U CN 202120726594U CN 214661436 U CN214661436 U CN 214661436U
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- screw rod
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Abstract
A flower-clamping type anti-loosening bolt assembly belongs to the technical field of fasteners and comprises a bolt and a nut, wherein the bolt comprises a screw rod and a nut, a straight clamping groove arranged along the axis direction of the screw rod is formed in the external thread of the screw rod, the straight clamping groove comprises a groove bottom and two groove walls, and the straight clamping groove is provided with a plurality of straight clamping grooves which are uniformly distributed; an annular clamping ring groove is formed in the inner annular wall of one end of the nut, a flower clip is fixedly arranged in the clamping ring groove and comprises an inward arc petal and an outward arc petal, the arc petals are arc-shaped elastic pieces, and a plurality of inward arc petals and outward arc petals which are equal in number are sequentially connected end to form the annular flower clip; wherein the specification of each inward arc lobe is the same, and the specification of each outward arc lobe is the same; the outward arc petal is fixedly arranged on the inner wall of the clamping ring groove; the nut and the screw rod can be embedded into each other by the aid of the matching structure of the flower clamp and the straight clamp groove, and the nut and the screw rod are difficult to loosen, simple in structure and convenient to operate, and the effect of being incapable of relaxing can be achieved.
Description
Technical Field
The invention belongs to the technical field of fasteners, and particularly relates to a spline type anti-loosening bolt assembly capable of avoiding loosening caused by vibration.
Background
The common fasteners comprise a bolt and nut assembly, a stud and nut assembly, a screw and the like, wherein the nut is a polygonal cylinder provided with a central threaded hole, an inner thread is arranged on the inner annular wall of the central threaded hole and matched and screwed with an outer thread on the stud for fastening and connecting two or more fastened pieces with through holes.
The fastening of the nut and the bolt is generally relatively stable. However, if the fastened member is vibrated for a long time, the vibration frequency difference exists between the connecting members, so that each connecting member in the connecting structure can generate a certain displacement, the connection between the nut and the bolt becomes loose, and even falls off, and the stability and the safety of the operation of the connecting structure and even the whole device are affected. Taking the fastening screw and the nut on the train track as an example, when a train passes through the track at a certain speed, the fastening screw and the nut on the track can generate vibration with a certain frequency, so that the fastening screw and the nut can generate certain displacement, and the connection is loosened, therefore, on the train track, regular maintenance by a maintenance person is often needed.
The current common mode for preventing the bolt from loosening is as follows: the double-nut pressing, the bolt and nut inserting key, the bolt and nut opening inserting metal rod, the iron wire winding looseness prevention, the bolt and nut clamping tooth meshing or direct gluing or welding and the like.
The applicant develops the fastener for a long time to applied for many relevant patents, all can reach the locking effect of fastening, but the market effect is unsatisfactory, and the leading cause is that the structure is complicated, and the installation is loaded down with trivial details, has reduced a ray of engineering personnel's work efficiency, is difficult to use widely.
Disclosure of Invention
The invention aims to solve the technical problem that a bolt assembly for tightly clamping a nut and a screw rod by adopting a petal-shaped elastic clamp is provided so that installation can be carried out by simple operation under the condition of ensuring that the bolt is prevented from loosening.
In order to solve the technical problems, the invention adopts the technical scheme that the flower-clamping type anti-loosening bolt assembly is adopted, the existing bolt assembly generally comprises a bolt, a nut and a washer, the bolt comprises a screw rod and a nut directly generated at one end of the screw rod, the outer surface of the screw rod is provided with an external thread, and the inner ring wall of the nut is provided with an internal thread matched with the external thread; the straight clamping grooves are uniformly distributed.
An annular clamping ring groove is formed in the inner ring wall of one end of the nut, a flower clip is fixedly arranged in the clamping ring groove and made of elastic steel, the flower clip comprises an inward arc petal and an outward arc petal, the arc petal is an arc-shaped elastic steel sheet, an outward arc petal is arranged at the outward arc top, an inward arc petal is arranged at the inward arc top, and a plurality of inward arc petals and outward arc petals which are equal in number are sequentially connected end to form the annular flower clip; wherein the specification of each inward arc lobe is the same, and the specification of each outward arc lobe is the same; the outward arc petal is fixedly arranged on the inner wall of the clamping ring groove.
The number of the straight clamping grooves is integral multiple of the number of the inward arc lobes.
Thus, when the nut is screwed in or out under the force of the wrench, the elastic inward arc petals can bounce to wipe the groove wall when passing through the straight clamping groove, so that the nut rotates; when the nut is screwed into the screw rod, the inward arc petals on the flower clip can wipe the inclined groove wall in the screwing direction when being embedded into the clamping groove, so that the nut is screwed smoothly; when the nut needs to be unscrewed, the inward arc petals on the flower clip can wipe the vertical groove wall in the unscrewing direction when being embedded into the clamping groove, so that the nut is not easy to unscrew; so that the nut does not loosen under normal shock and is therefore referred to as a bayonet type anti-loosening bolt assembly.
Compared with the prior art, the invention has the following beneficial effects:
the nut and the screw rod can be embedded into each other due to the matched structure of the spline and the straight clamping groove, and the nut and the screw rod are difficult to loosen.
The novel wrench has the advantages that special assembling and disassembling tools do not need to be additionally arranged, the wrench can be directly used for screwing and unscrewing, the operation is convenient, and larger acting force is required to be exerted in the unscrewing process than in the screwing process.
Drawings
Fig. 1 is a schematic view of the overall structure of the flower-clip type anti-loosening bolt assembly of the present invention.
Fig. 2 is a schematic view of an assembly structure of the nut of the present invention.
Fig. 3 is a schematic structural diagram of the flower card with the groove in the invention.
In the figure: the bolt, 2, the nut, 3, the screw, 4, the nut, 5, the straight neck, 6, the tank bottom, 7, the tank wall, 8, the snap ring groove, 9, the flower clip, 10, the inward arc petal, 11, the outward arc petal, 12, the outer wall of the snap ring groove, 13, the bulge, 14, the groove.
Detailed Description
The present invention is further illustrated by the following examples, which are intended to illustrate the invention but not to limit it further, and should not be construed as limiting the scope of the invention.
Example 1.
As shown in the figure, make a flower card formula check bolt subassembly, current bolt subassembly generally includes bolt 1, nut 2 and packing ring, bolt 1 includes screw rod 3 and directly generates nut 4 in screw rod one end, be equipped with the external screw thread on the surface of screw rod 3, be equipped with on the inner ring wall of nut 2 with external screw thread assorted internal thread, this embodiment has carried out supporting improvement on screw rod 3 and nut 2, promptly be equipped with the straight draw-in groove 5 that sets up along the axis direction of screw rod on the external screw thread of screw rod 3, straight draw-in groove 5 includes a tank bottom 6 and two tank walls 7, these two tank walls 7 perpendicular to tank bottoms 6, straight draw-in groove 5 is equipped with a plurality of and evenly distributed.
An annular clamping ring groove 8 is formed in the inner annular wall of one end of the nut 2, a flower clip 9 is fixedly arranged in the clamping ring groove 8, the flower clip 9 is made of elastic steel, the flower clip 9 comprises an inward arc petal 10 and an outward arc petal 11, the arc petal is an arc-shaped elastic steel sheet, the arc top is outward called an outward arc petal 11, the arc top is inward called an inward arc petal 10, and a plurality of equal inward arc petals 10 and outward arc petals 11 are sequentially connected end to form the annular flower clip 9; wherein the specification of each inward arc lobe 10 is the same, and the specification of each outward arc lobe 11 is the same; the outward arc petals 11 are fixedly arranged on the inner wall of the clamping ring groove 8; if the process permits, the inward arc petal 10 can be directly generated in the ring-clamping groove 8 and the outward arc petal 11 is omitted, but the current technical level of the company is limited, only the inward arc petal 10 can be directly generated on the outward arc petal 11 to form the flower card 9, then the flower card 9 is placed in the ring-clamping groove 8 in the nut 2, then the outer wall 12 of the ring-clamping groove is pressed inwards, the outward arc petal 11 is wrapped in the ring-clamping groove 8, in order to better fix the outward arc petal 11, in the embodiment, a plurality of bulges 13 are dug on the side edge of the outward arc petal, when the outer wall 12 of the ring-clamping groove is pressed inwards, part of steel material wraps the bulges 13, so that the flower card 9 can be stably installed in the ring-clamping groove 8 of the nut 2, and when the nut 2 is screwed, the flower card 9 cannot be loosened. In addition, as shown in fig. 3, a groove 14 may be formed on the outward arc petal, and when the outer wall 12 of the snap ring groove is pressed inward, a part of the steel material is embedded into the groove 14 to clamp the card 9.
Example 2.
On the basis of the embodiment 1, the groove wall 7 close to the screwing position on the straight clamping groove 5 is made to be outwards inclined to the groove bottom 6, and the groove wall 7 close to the unscrewing position is made to be vertical to the groove bottom 6; thus, when the nut 2 is screwed into the screw rod 3, the inward arc petals 10 on the flower clip 9 wipe the inclined groove wall in the screwing direction when being embedded into the straight clamping groove 5, and the resistance of the inclined groove wall to the inward arc petals 10 is small, so that the nut 2 can be screwed smoothly; when the nut 2 is screwed out of the screw rod 3, the inward arc petals 10 on the flower clip 6 can wipe the vertical groove wall in the unscrewing direction when being embedded into the straight clamping groove 10, and the resistance of the vertical groove wall is large, so that the nut 2 is not easy to screw out.
Claims (3)
1. A flower-clamping type anti-loosening bolt assembly comprises a bolt and a nut, wherein the bolt comprises a screw rod and a nut and is characterized in that a straight clamping groove arranged along the axis direction of the screw rod is formed in an external thread of the screw rod, the straight clamping groove comprises a groove bottom and two groove walls, the two groove walls are perpendicular to the groove bottom, and the straight clamping groove is provided with a plurality of strips which are uniformly distributed;
an annular clamping ring groove is formed in the inner ring wall of one end of the nut, a flower clip is fixedly arranged in the clamping ring groove and comprises an inward arc petal and an outward arc petal, the arc petal is an arc-shaped elastic piece, the arc top outwards is called an outward arc petal, the arc top inwards is called an inward arc petal, and a plurality of inward arc petals and outward arc petals which are equal in number are sequentially connected end to form the annular flower clip; wherein the specification of each inward arc lobe is the same, and the specification of each outward arc lobe is the same; the outward arc petal is fixedly arranged on the inner wall of the clamping ring groove.
2. The assembly of claim 1, wherein the slot walls of the straight slot adjacent the tightening orientation are inclined outwardly from the slot base and the slot walls adjacent the loosening orientation are perpendicular to the slot base.
3. The assembly of claim 1 or 2, wherein the number of straight slots is an integer multiple of the number of inward lobes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120726594.XU CN214661436U (en) | 2021-04-10 | 2021-04-10 | Flower card formula check bolt subassembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120726594.XU CN214661436U (en) | 2021-04-10 | 2021-04-10 | Flower card formula check bolt subassembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214661436U true CN214661436U (en) | 2021-11-09 |
Family
ID=78460739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120726594.XU Active CN214661436U (en) | 2021-04-10 | 2021-04-10 | Flower card formula check bolt subassembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214661436U (en) |
-
2021
- 2021-04-10 CN CN202120726594.XU patent/CN214661436U/en active Active
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