CN210153135U

CN210153135U - Piston rod assembly of automobile shock absorber

Info

Publication number: CN210153135U
Application number: CN201821863119.1U
Authority: CN
Inventors: 冯维新
Original assignee: KASICO SHOCK ABSORBER MANUFACTURE Co Ltd
Current assignee: KASICO SHOCK ABSORBER MANUFACTURE Co Ltd
Priority date: 2018-11-13
Filing date: 2018-11-13
Publication date: 2020-03-17
Anticipated expiration: 2028-11-13

Abstract

The utility model relates to the technical field of automobile shock absorber spare and accessory parts, in particular to an automobile shock absorber piston rod assembly, including the piston rod, rings and dustproof shroud, rings are the body, the middle part of body inwards contracts and forms the V-arrangement waist, the top of piston rod welds on the V-arrangement waist, the up end of piston rod sets up with the wall cooperation of V-arrangement waist, dustproof shroud suit is on piston rod upper portion, dustproof shroud include annular shroud main part, the week side shaping of shroud main part has the turn-down rim, the middle part of shroud main part is upwards protruding to form, frustum center is provided with first shaft hole, the dustproof shroud suit is on the step axle on piston rod upper portion through first shaft hole, the frustum that the turn-down rim and the middle part upwards protruding to form through dustproof shroud week side shaping, be convenient for the better suit on the step axle on piston rod upper portion through first shaft hole of dustproof shroud, make the atress reasonable, the purpose that the shock attenuation effect is better.

Description

Piston rod assembly of automobile shock absorber

Technical Field

The utility model relates to an automobile shock absorber spare and accessory part technical field, in particular to automobile shock absorber piston rod assembly.

Background

The piston rod assembly of the shock absorber is an important component of the shock absorber of the automobile suspension, so the structure and the processing technology of the piston rod assembly have important influence on the performance of the shock absorber.

In the prior art, a shock absorber piston rod assembly is formed by welding four parts, namely a piston rod, a dust-proof cover and a lifting lug, but the commonly used piston rod and the dust-proof cover are made of low-carbon steel materials made of medium-carbon steel, and the reliability is poor after the piston rod and the dust-proof cover are welded; the surface of the piston rod is easy to damage in the welding process, the risk of oil leakage or poor damping effect of the shock absorber in the use process is increased, and in addition, the stress between the hanging ring and the piston rod is not reasonable enough, so that the service life is general.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to prior art not enough and defect, provide an automobile shock absorber piston rod assembly, it has simple structure, simple to operate, and the atress is reasonable, safe and reliable, the effectual purpose of shock attenuation.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model discloses an automobile shock absorber piston rod assembly, including piston rod, rings and dust cap, the rings are the body, and the middle part of body is inwards shrunk and is formed the V-arrangement waist, the top of piston rod welds on the V-arrangement waist, the up end of piston rod and the wall cooperation setting of V-arrangement waist; the dustproof cover cap is sleeved on the upper part of the piston rod; dustproof shroud including annular shroud main part, the week side shaping of shroud main part has down the turn-ups, the middle part of shroud main part is upwards protruding formation frustum, frustum central authorities are provided with first shaft hole, dustproof shroud passes through first shaft hole suit at the step on piston rod upper portion epaxial, the step axle is including cup jointing the second shaft hole of piston rod outer wall, with the last inclined ring shape face that V-arrangement waist cooperation contacted, with the parallel plane that the up end cooperation of frustum set up, the arcwall face of locating the outer end.

Furthermore, an included angle between the upper inclined annular surface and the second shaft hole is 60-80 degrees.

Furthermore, a ring-shaped baffle plate is arranged between the piston rod and the lower flanging of the dustproof cover cap, and an auxiliary damping sleeve is arranged between the baffle plate and the frustum.

Furthermore, a left bushing and a right bushing are arranged in the lifting ring, and the inner ends of the left bushing and the right bushing are butted to form a V-shaped ring groove matched with the V-shaped waist; the left bushing and the right bushing are symmetrical to each other, and through holes for the metal sleeve to penetrate through are formed in the left bushing and the right bushing; the outer walls of the left bushing and the right bushing are in interference fit with the inner wall of the hanging ring.

Furthermore, the inner edges of the two ends of the hanging ring are provided with round corners.

Furthermore, the included angle of the V-shaped ring groove is 145-165 degrees.

Further, the included angle of the V-shaped ring groove is 160 degrees.

Compared with the prior art, the utility model discloses beneficial effect does: the utility model provides an automobile shock absorber piston rod assembly, through the frustum that dustproof shroud week side fashioned turn-ups down and middle part upwards protruding formation, the suit that the dustproof shroud of being convenient for passes through first shaft hole better on the step axle on piston rod upper portion, makes the atress reasonable between rings and the piston rod, the better purpose of shock attenuation effect.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic structural diagram of the piston rod of the present invention.

Detailed Description

As shown in fig. 1 and 2, the piston rod assembly of the automobile shock absorber comprises a piston rod 1, a hanging ring 2 and a dust cover 3, wherein the hanging ring 2 is a pipe body, the middle part of the hanging ring 2 is inwards contracted to form a V-shaped waist 4, the top end of the piston rod 1 is welded on the V-shaped waist 4, and the upper end surface 5 of the piston rod 1 is matched with the wall surface of the V-shaped waist 4; the dust cover 3 is sleeved on the upper part of the piston rod 1; dustproof cover 3 include annular shroud main part, the all sides shaping of shroud main part has turn-ups 11 down, the middle part of shroud main part is upwards protruding to form frustum 13, frustum 13 central authorities are provided with first shaft hole 12, dustproof cover 3 overlaps on the step axle 6 on piston rod 1 upper portion through first shaft hole 12, through the all sides shaping turn-ups 11 down of dustproof cover 3 and the middle part frustum 13 that upwards protruding formed, the suit of dustproof cover 3 of being convenient for is on the step axle 6 on piston rod 1 upper portion through the better suit in first shaft hole 12, and it is reasonable to make between being connected of rings 2 and piston rod 1 atress through dustproof cover 3, the better purpose of shock attenuation effect.

The step shaft 6 comprises a second shaft hole sleeved on the outer wall of the piston rod 1, an upper inclined annular surface 14 in matched contact with the V-shaped waist 4, a parallel plane arranged in a matched mode on the upper end face 5 of the frustum 13, and an arc-shaped surface 15 arranged at the outer end, and the shock absorption effect between the hanging ring 2 and the piston rod 1 is better through the inclined annular surface 14, the frustum 13, the parallel plane and the arc-shaped surface 15.

The included angle between the upper inclined annular surface 14 and the second shaft hole is 60-80 degrees.

And a circular ring-shaped baffle 16 is arranged between the piston rod 1 and the lower flanging 11 of the dust cover 3, and an auxiliary damping sleeve is arranged between the circular ring-shaped baffle 16 and the frustum 13.

A left bushing 7 and a right bushing 8 are arranged in the lifting ring 2, and the inner ends of the left bushing 7 and the right bushing 8 are butted to form a V-shaped ring groove 10 matched with the V-shaped waist 4; the left bush 7 and the right bush 8 are symmetrical to each other, and through holes for the metal sleeve to penetrate through are formed in the left bush and the right bush; the outer wall of left side bush 7,

right side bush

8 and 2 inner walls of rings are interference fit, and the outer wall and 2 inner walls of rings through left bush 7, right bush 8 are interference fit for it is convenient to have the cooperation between rings 2 and left bush 7, the right bush 8, and reasonable assembly, characteristics simple to use.

And the inner edges of the two ends of the hanging ring 2 are provided with round corners 9.

The included angle of the V-shaped ring groove 10 is 145-165 degrees.

The included angle of the V-shaped ring groove 10 is 160 degrees, and when the included angle of the V-shaped ring groove 10 is 160 degrees, the stress between the hoisting ring 2 and the left bushing 7 and the right bushing 8 is most reasonable.

The above is only the preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principles in accordance with the claims of the present invention are included in the claims of the present invention.

Claims

1. The automobile shock absorber piston rod assembly comprises a piston rod (1), a lifting ring (2) and a dust cover cap (3), wherein the lifting ring (2) is a pipe body, the middle part of the lifting ring (2) is inwards contracted to form a V-shaped waist (4), the top end of the piston rod (1) is welded on the V-shaped waist (4), and the upper end surface (5) of the piston rod (1) is matched with the wall surface of the V-shaped waist (4); the dust cover (3) is sleeved on the upper part of the piston rod (1); the method is characterized in that: dustproof shroud (3) including annular shroud main part, the week side shaping of shroud main part has turn-ups (11) down, the middle part of shroud main part is upwards protruding formation frustum (13), frustum (13) central authorities are provided with first shaft hole (12), dustproof shroud (3) are on step axle (6) on piston rod (1) upper portion through first shaft hole (12) suit, step axle (6) are including cup jointing the second shaft hole of piston rod (1) outer wall, with slope annular face (14) on V-arrangement waist (4) cooperation contact, with parallel plane, the arcwall face (15) of locating the outer end that up end (5) cooperation of frustum (13) set up.

2. The piston rod assembly of claim 1 wherein: the included angle between the upper inclined annular surface (14) and the second shaft hole is 60-80 degrees.

3. The piston rod assembly of claim 1 wherein: a circular ring-shaped baffle (16) is arranged between the piston rod (1) and the lower flanging (11) of the dust cover (3), and an auxiliary damping sleeve is arranged between the circular ring-shaped baffle (16) and the frustum (13).

4. The piston rod assembly of claim 1 wherein: a left bushing (7) and a right bushing (8) are arranged in the lifting ring (2), and the inner ends of the left bushing (7) and the right bushing (8) are butted to form a V-shaped ring groove (10) matched with the V-shaped waist (4); the left bushing (7) and the right bushing (8) are symmetrical to each other, and through holes for the metal sleeve to penetrate through are formed in the left bushing and the right bushing; the outer walls of the left bushing (7) and the right bushing (8) are in interference fit with the inner wall of the hanging ring (2).

5. The piston rod assembly of claim 4 wherein: and fillets (9) are arranged on the inner edges of the two ends of the hanging ring (2).

6. The piston rod assembly of claim 4 wherein: the included angle of the V-shaped ring groove (10) is 145-165 degrees.

7. The piston rod assembly of claim 4 wherein: the included angle of the V-shaped ring groove (10) is 160 degrees.