CN207921222U - Fluid buffer-type guider - Google Patents

Abstract

The utility model discloses a kind of fluid buffer-type guider, ontology (1) including column type, ontology (1) center is equipped with the pilot hole (1.1) for coordinating with piston rod (2), the piston rod (2) is equipped with limiter (3), the ontology (1) is equipped with dashpot (1.2) towards the end face of limiter (3), and the diameter of the dashpot (1.2) is more than the outer diameter of limiter (3).The utility model provide it is a kind of to limiter close to guider when fluid buffer-type guider to limiter into row buffering.

Description

Fluid buffer-type guider

Technical field

The utility model is related to automobile absorber field, more particularly to a kind of fluid buffer-type guider.

Background technology

Automobile is when by uneven road surface, although the shock-absorbing spring in suspension system can filter the vibrations on road surface, bullet Spring itself also has reciprocating motion, and damper is exactly for inhibiting this spring back and forth to jump.The structure of damper is band Have in the piston rod insertion tube of piston, full of oil in cylinder.There is throttle orifice on piston so that the two parts separated by piston are empty Between in oil can complement each other.The operation principle of damper is to work as phase occurred by vibrations between vehicle frame and vehicle bridge or vehicle body and vehicle bridge When to movement, the piston in damper moves up and down, and the fluid in snubber cavity just repeatedly passes through different holes from a chamber Clearance flow enters another intracavitary, and the friction between hole wall and fluid at this time and the intermolecular interior friction of fluid form damping force to vibrations, So that thump energy is converted into fluid thermal energy, then is dispersed into air by absorber.Guider is the weight in damper One of part is wanted, it plays good guiding role to the movement of piston rod in damper, ensures piston in the process of running flat It is pliable, while being connected to working cylinder with oil storage cylinder by the oilhole of guider during piston motion.

Piston rod is set in the automobile absorber guider of the prior art, and piston rod is back and forth transported in the pilot hole of guider Dynamic, piston rod is equipped with the limiter for the limit travel for limiting piston rod, and this structure has the following disadvantages：It is working long hours Afterwards, limiter generates collision with guider end face and makes limiter or guider deformation, to influence limit accuracy or be oriented to essence Degree.

Invention content

Technical problem to be solved in the utility model is：There is provided it is a kind of to limiter close to guider when to limiter into The fluid buffer-type guider of row buffering.

The technical scheme in the invention for solving the above technical problem is：A kind of fluid buffer-type guider, including column The ontology of type, the body central are equipped with the pilot hole for coordinating with piston rod, and the piston rod is equipped with limiter, described Ontology is equipped with dashpot towards the end face of limiter, and the diameter of the dashpot is more than the outer diameter of limiter.

Compared with prior art, the utility model has the advantage of：Ontology towards dashpot is arranged on the end face of limiter, When piston rod movement limiter move towards guider, the fluid generation damping force in dashpot, to limiter into row buffering, from And limiter is avoided to be hit with guider, and the diameter of dashpot is more than the diameter of limiter so that the fluid energy in dashpot From being flowed out in the gap of dashpot and limiter.

As a kind of improvement of the utility model, the bottom surface of the dashpot is equipped with protrusion, the protrusion towards limiter Outer diameter it is consistent with the outer diameter of limiter, by the improvement, protrusion for avoiding limiter and guider from directly generating shock, To be further ensured that limiter or guider do not generate deformation after long-term use, guiding accuracy or limit accuracy are high and convex It rises and constitutes an auxiliary cushion chamber with the bottom surface of dashpot, side wall, house a part of fluid to increase the damping force of fluid.

As a kind of improvement that also has of the utility model, the protrusion is the round platform being gradually reduced towards limiter diameter, The side wall of the round platform and the angle of buffering groove bottom are 120 °, and the minimum outer diameter of the round platform is consistent with the outer diameter of limiter, By the improvement, truncated cone-shaped increases the intensity of protrusion, increases the fastness of protrusion.

As a kind of improvement that also has of the utility model, the endoporus of the protrusion be sequentially arranged towards pilot hole chamfering section with Fillet section, by the improvement, chamfering section and fillet section provide guiding when piston rod is installed, and in limiter towards guider When mobile, fillet section is squeezed into guider for turning to the fluid for rushing at guider and piston clearance, to reduce Adhere to fluid amount on the piston rod with piston clearance, the hydraulic pressure to ensure guider both ends is consistent.

Description of the drawings

Fig. 1 is the utility model overall structure diagram.

1- ontologies, 1.1- pilot holes, 1.2- dashpots, 1.3- protrusions, 1.4- chamfering sections, 1.5- fillet sections, 2- piston rods, 3- limiters.

Specific implementation mode

As shown in Figure 1,

A kind of fluid buffer-type guider, includes the ontology 1 of column type, and 1 center of the ontology is equipped with for matching with piston rod 2 The pilot hole 1.1 of conjunction, the piston rod 2 are equipped with limiter 3, and the ontology 1 is equipped with dashpot towards the end face of limiter 3 1.2, the diameter of the dashpot 1.2 is more than the outer diameter of limiter 3.

Wherein, the bottom surface of the dashpot 1.2 is equipped with protrusion 1.3, raised 1.3 outer diameter and limit towards limiter 3 The outer diameter of position device 3 is consistent.

Wherein, described raised 1.3 be the round platform being gradually reduced towards 3 diameter of limiter, the side wall and buffering of the round platform The angle of 1.2 bottom surface of slot is 120 °, and the minimum outer diameter of the round platform is consistent with the outer diameter of limiter 3.

Wherein, chamfering section 1.4 and fillet section 1.5 is sequentially arranged towards pilot hole 1.1 in raised 1.3 endoporus.

Only the most preferred embodiment of the utility model is described above, but is not to be construed as the limit to claim System.The utility model is not only limited to above example, and concrete structure is allowed to vary.It is all in the utility model independent right It is required that protection domain in made by various change in scope of protection of the utility model.

Claims (4)

1. a kind of fluid buffer-type guider, include the ontology (1) of column type, ontology (1) center, which is equipped with, to be used for and piston rod (2) pilot hole (1.1) coordinated, the piston rod (2) are equipped with limiter (3), it is characterised in that：Ontology (1) direction The end face of limiter (3) is equipped with dashpot (1.2), and the diameter of the dashpot (1.2) is more than the outer diameter of limiter (3).

2. fluid buffer-type guider according to claim 1, it is characterised in that：The bottom surface court of the dashpot (1.2) It is equipped with raised (1.3) to limiter (3), the outer diameter of the protrusion (1.3) is consistent with the outer diameter of limiter (3).

3. fluid buffer-type guider according to claim 2, it is characterised in that：The protrusion (1.3) is towards limit The round platform that device (3) diameter is gradually reduced, the side wall of the round platform and the angle of dashpot (1.2) bottom surface are 120 °, the round platform Minimum outer diameter it is consistent with the outer diameter of limiter (3).

4. fluid buffer-type guider according to claim 2, it is characterised in that：The endoporus direction of the protrusion (1.3) Chamfering section (1.4) and fillet section (1.5) is sequentially arranged in pilot hole (1.1).