CN213870655U

CN213870655U - Stud bolt

Info

Publication number: CN213870655U
Application number: CN202023131707.6U
Authority: CN
Inventors: 侯山宝; 侯爱国; 刘夏兰
Original assignee: Zhejiang Shanbao Auto Parts Co ltd
Current assignee: Zhejiang Shanbao Auto Parts Co ltd
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-08-03
Anticipated expiration: 2030-12-23

Abstract

The utility model provides a stud belongs to auto-parts technical field. It has solved the current not good scheduling problem of stud locking effect. This stud includes coaxial setting and from the top down connects gradually integrative screw rod section one, linkage segment and screw rod section two, the middle part of linkage segment has the bulge loop of the radial evagination of round, the outer wall of bulge loop has the location plane that the symmetry set up, the linkage segment still has radial evagination and is the boss of round platform form, the tip that the boss diameter is big and the external diameter constant diameter setting of bulge loop and the big end connection of boss diameter are in the top surface of bulge loop, the cover is equipped with the taper ring on the linkage segment, the inner wall of taper ring is the conical surface of adaptation in the round platform outer wall, the taper ring has one breach and makes the taper ring both ends dislocation, still the cover is equipped with the plastics ring on the linkage segment, the taper ring is located between boss and the plastics ring, the outer wall of plastics ring is the tip orientation taper ring setting that the conical surface and plastics ring diameter are big. The utility model has the advantages of good anti-loosening effect, long service life and the like.

Description

Stud bolt

Technical Field

The utility model belongs to the technical field of auto-parts, a bolt is related to, in particular to stud.

Background

Stud bolts are widely used in the field of automobile accessories, and include a first screw, a polish rod, and a second screw. For example, chinese patent literature discloses a stud bolt [ application No.: 201520938784.2, respectively; authorization notice number: CN205278057U ], it includes left thread section, pole section, right thread section, and left thread section end is circular, and left thread section right side connecting rod section, pole section surface are smooth, and pole section side is equipped with the screw hole, and pole section both ends respectively are equipped with annular spacing groove, and the cross-section of annular spacing groove is right angle trapezoidal form, and the screw thread end of left thread section and right thread section is connected respectively at annular spacing groove both ends, is equipped with a word groove on the right thread section terminal surface.

Foretell stud is through the setting of a word groove and screw hole, conveniently screws up and dismantles, and annular spacing groove supplies the packing ring cover to establish, can improve the connection effect, but locking effect is still not ideal enough, and setting up of screw hole has weakened structural strength, has shortened life.

Disclosure of Invention

The utility model aims at providing a to the above-mentioned problem that exists among the prior art, provide a locking effectual, long service life's stud.

The purpose of the utility model can be realized by the following technical proposal: a stud bolt comprises a first screw section, a connecting section and a second screw section which are coaxially arranged and sequentially connected into a whole from top to bottom, it is characterized in that the middle part of the connecting section is provided with a circle of convex rings which are convex outwards in the radial direction, the outer walls of the convex rings are provided with symmetrically arranged positioning planes, the connecting section is also provided with a boss which is radially outwards convex and is in a round table shape, the end part with the large diameter of the boss is arranged in the same diameter with the outer diameter of the convex ring, and the end part with the large diameter of the boss is connected with the top surface of the convex ring, the connecting section is sleeved with a conical ring, the inner wall of the conical ring is a conical surface which is adapted to the outer wall of the circular truncated cone, the conical ring is provided with a split which makes two ends of the conical ring staggered, the connecting section is further sleeved with a plastic ring, the conical ring is located between the boss and the plastic ring, and the outer wall of the plastic ring is a conical surface, and the end part with the large diameter of the plastic ring faces the conical ring.

In foretell stud, the outer wall of linkage segment spline groove that circumference equipartition and axial extend has, the spline groove be located between bulge loop and the screw rod section two.

In the stud bolt, the outer wall of the connecting section is embedded with the first nylon ring, the outer wall of the first nylon ring radially protrudes out of the outer wall of the connecting section, and the first nylon ring is located in the middle of the spline groove.

In foretell stud, a screw rod section threaded connection have the nut, the inner of nut have the portion of supporting of radial evagination, the inner wall of nut inlay and be equipped with nylon ring two.

In the stud bolt, the second screw section is in threaded connection with a nut, a threaded hole penetrates through the nut in the radial direction, a stud is connected in the threaded hole, and the outer end face of the stud is provided with a straight groove or a cross groove.

In the stud bolt, the end surface of the convex ring facing the second screw section is provided with teeth which are uniformly distributed in the circumferential direction.

Compared with the prior art, the double-headed bolt has good anti-loosening effect, good connection stability, good use safety and long service life.

Drawings

Fig. 1 is a front view of the structure of the present stud bolt.

Fig. 2 is a structural sectional view of the present stud bolt.

In the figure, 1, a screw section I; 2. a connecting section; 3. a screw section II; 4. a convex ring; 5. positioning a plane; 6. a boss; 7. a conical ring; 8. a plastic ring; 9. a spline groove; 10. a first nylon ring; 11. a nut; 12. an abutting portion; 13. a nylon ring II; 14. a nut; 15. a stud; 16. and (4) teeth.

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 and 2, the stud bolt comprises a screw section I1 which is coaxially arranged and is connected into a whole in sequence from top to bottom, connecting segment 2 and screw rod section two 3, the middle part of connecting segment 2 has the bulge loop 4 of the radial evagination of round, the outer wall of bulge loop 4 has the location plane 5 that the symmetry set up, connecting segment 2 still has radial evagination and is the boss 6 of round platform form, the tip that the boss 6 diameter is big is equant with the external diameter of bulge loop 4 sets up and the tip connection that the boss 6 diameter is big in bulge loop 4's top surface, the cover is equipped with awl ring 7 on connecting segment 2, the inner wall of awl ring 7 is the conical surface of adaptation in the round platform outer wall, awl ring 7 has one breach and makes the cone ring 7 both ends dislocation, it is equipped with plastic ring 8 still to overlap on connecting segment 2, cone ring 7 is located between boss 6 and the plastic ring 8, plastic ring 8's outer wall sets up towards cone ring 7 for the tip that the conical surface and plastic ring 8 diameter are big.

The conical ring 7 in the stud bolt has elasticity due to the fact that two ends of the conical ring are staggered, the convex ring 4 increases the structural strength of the connecting section 2, the anti-torsion capacity is improved, the service life is prolonged, and the positioning plane 5 is convenient for clamping a wrench or a caliper, so that the stud bolt is convenient to position or rotate; this stud connects the back, and awl ring 7 compression deformation, under the cooperation of 6 outer walls of boss and the conical surface of the 7 inner walls of awl ring, awl ring 7 provides elasticity all the time in order to play locking effect, and the elasticity of awl ring 7 still makes plastics ring 8 to the junction displacement, and plastics ring 8 can block into between linkage segment 2 and the junction inner wall for the outer wall of conical surface, plays locking and compensation clearance effect, has improved locking effect.

In more detail, the outer wall of the connecting section 2 is provided with spline grooves 9 which are uniformly distributed in the circumferential direction and axially extend, the spline grooves 9 are positioned between the convex ring 4 and the screw section II 3, the spline grooves 9 increase the friction force of the outer wall of the connecting section 2, the connecting section 2 is prevented from rotating due to vibration, and the anti-loosening effect is improved; the outer wall of the connecting section 2 is embedded with a first nylon ring 10, the outer wall of the first nylon ring 10 radially protrudes out of the outer wall of the connecting section 2, the first nylon ring 10 is located in the middle of the spline groove 9, and the first nylon ring 10 is pressed to deform to be extruded between the connecting section 2 and the inner wall of the connecting part, so that the anti-loosening effect is further improved.

The screw cap 11 is connected with the screw cap section I1 in a threaded manner, the inner end of the screw cap 11 is provided with a radially outward protruding abutting part 12, a nylon ring II 13 is embedded in the inner wall of the screw cap 11, the abutting part 12 increases the contact area of the screw cap 11 abutting against the joint, the friction force is increased, the locking effect is good, the nylon ring II 13 is embedded between the threads of the screw cap section I1 along with the rotation of the screw cap 11, the effect of locking the screw cap 11 is achieved, the screw cap 11 cannot be loosened even being influenced by vibration for a long time, and the safety is improved; the screw section II 3 is in threaded connection with a nut 14, a threaded hole is radially penetrated through the nut 14, a stud 15 is connected in the threaded hole, and the outer end face of the stud 15 is provided with a straight groove.

The convex ring 4 has tooth 16 of circumference equipartition towards the terminal surface of screw rod section two 3, and tooth 16 is used for the terminal surface of conflict junction, plays interlock locking effect, has further improved locking effect, connects the steadiness good.

Those not described in detail in this specification are within the skill of the art. 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. A stud comprises a first screw rod section (1), a connecting section (2) and a second screw rod section (3) which are coaxially arranged and sequentially connected into a whole from top to bottom, and is characterized in that the middle of the connecting section (2) is provided with a circle of convex ring (4) which is radially outwards protruded, the outer wall of the convex ring (4) is provided with positioning planes (5) which are symmetrically arranged, the connecting section (2) is also provided with a boss (6) which is radially outwards protruded and is in a round table shape, the end part with the large diameter of the boss (6) is arranged in an equal diameter way with the outer diameter of the convex ring (4), the end part with the large diameter of the boss (6) is connected to the top surface of the convex ring (4), the connecting section (2) is sleeved with a conical ring (7), the inner wall of the conical ring (7) is a conical surface which is adaptive to the outer wall of the round table, the conical ring (7) is provided with a split so that two ends of the conical ring (7) are staggered, the connecting section (2) is further sleeved with a plastic ring (8), the conical ring (7) is positioned between the boss (6) and the plastic ring (8), the outer wall of the plastic ring (8) is a conical surface, and the end part of the plastic ring (8) with the large diameter faces the conical ring (7).

2. A stud according to claim 1, in which the outer wall of the connecting section (2) has circumferentially equispaced axially extending spline grooves (9), the spline grooves (9) being located between the male ring (4) and the second shank section (3).

3. A stud bolt according to claim 2 characterised in that the outer wall of the connecting section (2) is embedded with a first nylon ring (10), the outer wall of the first nylon ring (10) radially protrudes from the outer wall of the connecting section (2), and the first nylon ring (10) is located in the middle of the spline groove (9).

4. A stud according to claim 3 wherein the first shank portion (1) is threadedly connected to a nut (11), the inner end of the nut (11) having a radially outwardly projecting abutment portion (12), the inner wall of the nut (11) being embedded with a second nylon ring (13).

5. A stud according to claim 4 characterised in that the second shank section (3) is threadedly connected to a nut (14), the nut (14) having a threaded bore extending radially therethrough, the threaded bore having a stud (15) attached therein, the stud (15) having an outer end face provided with a straight or cross recess.

6. A stud according to claim 5 in which the end face of the collar (4) facing the second shank section (3) has circumferentially equispaced teeth (16).