CN207316065U - A kind of lightweight piston axis - Google Patents

Abstract

It the utility model is related to a kind of lightweight piston axis, including piston shaft（2）With the first parts（1）, the piston shaft and the second parts（3）, the 3rd parts（4）Connection, the piston shaft（2）For one end open, the hollow shaft of other end closing, from gravity it is smaller to the unilateral compression of seal, reduce the drawbacks of seal compression face inordinate wear in motion process to greatest extent, improve the service life of assembly product；Piston shaft（2）Openend be outward flanging structure（22）, the minimum wall thickness (MINI W.) of product has been effectively ensured, has reduced the dead weight of product to greatest extent, while make product mix structure easedization, realize inexpensive control.

Description

A kind of lightweight piston axis

Technical field

It the utility model is related to a kind of lightweight piston axis.

Background technology

Piston shaft is solid construction in fast inserting structure lightweight piston axis in the prior art, dead weight there are seal it is unilateral by Pressure, the during the motion inordinate wear of seal compression face reduce the drawbacks of seal durability.

Such as the Chinese utility model patent that notification number is CN205118050 U, it is fast with filtering type it discloses one kind The lightweight piston axis of inserting structure, including lightweight piston shaft assembly and fast inserting structure, lightweight piston shaft assembly insert knot with fast Structure connects, and the fast inserting structure is the fast inserting structure of filtering type.The lightweight piston shaft assembly includes oil inlet, hydraulic cavities, work Fill in axis, push rod, piston I, exhaust outlet, valve, return spring, atmospheric pressure cavity and piston I I.The fast inserting structure of filtering type includes Fast connector assembly, bushing, valve body, seal washer and filtration apparatus, the filtration apparatus are arranged on the insertion of the fast inserting structure of filtering type End.Filtration apparatus includes setting-up piece and filter screen, and setting-up piece and filter screen integrally connected, filter screen are arranged on insertion end Outside.The lightweight piston axis with the fast inserting structure of filtering type, solves the lightweight piston axis with the fast inserting structure of tradition The defects of without filtering function, may filter that impurity present in pipeline, make that product assembly service life higher, performance be more superior, matter Measure more reliable.But piston shaft selects solid shafting, it is conducted oneself with dignity, and there are the unilateral compression of seal, during the motion seal compression face Inordinate wear reduces the drawbacks of seal durability.

In another example shown in Fig. 3, piston shaft 2 of the prior art is solid construction, since product is generally longer（100mm with On）, dead weight it is heavier, there are the unfavorable factor of the unilateral compression of seal.During the motion seal compression surface wear compared with Greatly, increase seal inordinate wear, reduce seal normal service life.

Utility model content

In order to solve above-mentioned technological deficiency existing in the prior art, the purpose of this utility model is to provide a kind of lightweight Piston shaft, has carried out design optimization on the basis of conventional attachment structure, effectively prevent former solid construction dead weight and there is sealing The unilateral compression of part, the during the motion inordinate wear of seal compression face reduce the drawbacks of seal durability.Use at the same time Connection structure, makes product mix structure generalization, realizes that product is freely combined；Improve the synthesis cost control of product assembly. Suitable for two and the product of two or more parts bindiny mechanism.

In order to realize above-mentioned purpose of design, the scheme that the utility model uses is as follows：

A kind of lightweight piston axis, including piston shaft and the first parts, the piston shaft and the second parts, the 3rd 0 Part connects, and the piston shaft be one end open, the hollow shaft that the other end is closed, smaller to the unilateral compression of seal, most from gravity The drawbacks of reducing seal compression face inordinate wear in motion process of limits, improves the service life of assembly product； The openend of piston shaft is outward flanging structure, and the minimum wall thickness (MINI W.) of product has been effectively ensured, has reduced product to greatest extent Dead weight, while make product mix structure easedization, realize inexpensive control.

Preferably, it is provided with step groove on the inner wall of the turnup structure.

In any of the above-described scheme preferably, second parts are placed in step groove.

In any of the above-described scheme preferably, second parts are coordinated with piston shaft using interference or transition, So as to ensure that the second parts are fastenedly connected with piston shaft.

In any of the above-described scheme preferably, it is equipped with O-ring seal between the 3rd parts and piston shaft.

In any of the above-described scheme preferably, first parts are sealing ring.

In any of the above-described scheme preferably, the end of the 3rd parts is equipped with baffle ring, plays position-limiting action.

Brief description of the drawings

Fig. 1 is the structure diagram according to a preferred embodiment of the lightweight piston axis of the utility model.

Fig. 2 is to show according to the structure of piston shaft in preferred embodiment shown in Fig. 1 of the lightweight piston axis of the utility model It is intended to.

Fig. 3 is the structure diagram of piston shaft in the prior art.

Embodiment

It is that the following description is substantially merely exemplary and be not intended to the limitation disclosure, application or purposes.Below The embodiment of the utility model lightweight piston axis is further described with reference to Figure of description.

As shown in Figure 1 and Figure 2, according to the utility model lightweight piston axis a preferred embodiment sectional view.This reality With new lightweight piston axis, including 2 and first parts 1 of piston shaft, the piston shaft and the second parts 3, the 3rd 0 Part 4 connects, and the piston shaft 2 is one end open, the hollow shaft of other end closing, from gravity it is smaller to the unilateral compression of seal, The drawbacks of reducing seal compression face inordinate wear in motion process to greatest extent, improve assembly product uses the longevity Life；The openend of piston shaft 2 is outward flanging structure 22（As shown in Figure 2）, minimum wall thickness (MINI W.), the maximum limit of product has been effectively ensured Degree reduces the dead weight of product, while makes product mix structure easedization, realizes inexpensive control.

The inside of piston shaft 2 is hollow state, eliminates intermediate solid（Side effect）Part, reduces product to greatest extent Dead weight.First parts 1 are also smaller from gravity by piston shaft 2, the potential failure of 1 inordinate wear of the first parts of significant increase because Element, improves the service life of assembly product.

The oral area of piston shaft 2 uses turnup structure, realizes minimum wall thickness (MINI W.) and the dead weight control of product, profit according to requirements The drawbacks of carrying out matching design with flange position, reducing structure connection combination, bonding strength and total integral dead weight, makes production Product assembly realizes maximum benefit.

In the present embodiment, it is provided with step groove 21 on the inner wall of the turnup structure 22.

In the present embodiment, second parts 3 are placed in step groove 21.

In the present embodiment, second parts 3 and piston shaft 2 are coordinated using interference or transition, so as to ensure the Two parts 3 are fastenedly connected with piston shaft 2.

In the present embodiment, it is equipped with O-ring seal between the 3rd parts 4 and piston shaft 2.

In the present embodiment, first parts 1 are sealing ring.

In the present embodiment, the end of the 3rd parts 4 is equipped with baffle ring, plays position-limiting action.

It will be apparent to those skilled in the art that the lightweight piston axis of the utility model includes each several part in this specification Any combination.As space is limited and in order to make specification concise, these combinations are not discussed in detail one by one herein, but seen this theory After bright book, the scope of the utility model that any combination for each several part being made of this specification is formed is self-evident.

Claims (6)

1. a kind of lightweight piston axis, including piston shaft (2) and the first parts (1), the piston shaft and the second parts (3), 3rd parts (4) connect, it is characterised in that：Piston shaft (2) is one end open, the hollow shaft of other end closing；Piston shaft (2) Openend be outward flanging structure (22)；The end of 3rd parts (4) is equipped with baffle ring.

2. lightweight piston axis as claimed in claim 1, it is characterised in that：Step groove is provided with the inner wall of turnup structure (22) (21)。

3. lightweight piston axis as claimed in claim 1, it is characterised in that：Second parts (3) are placed in step groove (21).

4. the lightweight piston axis as described in claim 1 or 3, it is characterised in that：Second parts (3) are adopted with piston shaft (2) Coordinated with interference or transition.

5. lightweight piston axis as claimed in claim 1, it is characterised in that：Set between 3rd parts (4) and piston shaft (2) There is O-ring seal.

6. lightweight piston axis as claimed in claim 1, it is characterised in that：First parts (1) are sealing ring.