CN217301393U - Middle cylinder for external valve shock absorber - Google Patents
Middle cylinder for external valve shock absorber Download PDFInfo
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- CN217301393U CN217301393U CN202120816907.0U CN202120816907U CN217301393U CN 217301393 U CN217301393 U CN 217301393U CN 202120816907 U CN202120816907 U CN 202120816907U CN 217301393 U CN217301393 U CN 217301393U
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- cylinder body
- shock absorber
- cylinder
- external valve
- ring groove
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Abstract
A middle cylinder for an external valve shock absorber comprises a cylinder body and O-ring grooves arranged at two ends of the cylinder body. This device adopts the split type structure of processing the cylinder body welded with O circle groove alone, removes the influence of mould from. The cylinder body and the O-ring groove of the device can be manufactured by adopting a split type connection method, and the O-ring groove is manufactured by adopting a machining process, so that the device has the advantages of simple processing process, high precision, high connection strength, flexible production and the like.
Description
Technical Field
The utility model belongs to the technical field of the vehicle shock absorber, concretely relates to middle jar for external valve shock absorber.
Background
The external electromagnetic valve shock absorber, between working cylinder and oil storage cylinder, there is a middle cylinder, in order to lead the oil to the electromagnetic valve; the outer circular surface of the working cylinder and the inner circular surface of the middle cylinder are sealed by O-rings, and the middle cylinder is provided with an inner groove for placing the O-rings. However, in the structure, the middle cylinder is of an integrated structure, and the sealing ring groove needs to be machined at the necking position by a groove rolling process after necking at two ends of the steel pipe of the middle cylinder. The processing method has high requirement on the elongation of materials, a mold needs to be manufactured in the early stage, the mold needs to be shaped after groove rolling, the size precision is difficult to control, the mold debugging time is long before large-scale production, and in addition, the mold needs to be periodically checked. Because the structure needs die sinking and equipment debugging, the structure has high production cost and is not suitable for small-batch production and sample piece manufacturing.
Therefore, a structure suitable for small-batch production or sample fabrication is needed, which has reliable performance and simple processing method.
SUMMERY OF THE UTILITY MODEL
To the problem that exists, the utility model aims at providing a middle jar for external valve shock absorber adopts the split type structure of O ring groove processing back cylinder body welded alone, removes the influence of mould from.
In order to achieve the above purpose, the technical solution of the present invention is as follows:
a middle cylinder for an external valve shock absorber comprises a cylinder body and O-ring grooves arranged at two ends of the cylinder body.
As the utility model discloses a further preferred, O circle groove includes outer disc step, interior disc step and slot, the height of interior disc step is 0.1-0.2 mm.
As a further preferred aspect of the present invention, the outer circular surface step and the inner circular surface of the cylinder body are in interference fit.
To sum up, the utility model discloses following beneficial effect has:
the cylinder body and the O-ring groove can be manufactured by adopting a split type connection method, and the O-ring groove is manufactured by adopting a machining process, so that the cylinder body and the O-ring groove have the advantages of simple machining process, high precision, high connection strength, flexible production and the like.
The CPK capacity of the product in the production process can reach 1.38, the product percent of pass can reach more than 99%, the production efficiency is doubled compared with the original production efficiency, the production of the product is not influenced by the quantity, and the CPK can be applied to small-batch production such as sample piece manufacturing and the like, is also applicable to large-batch production, and has good application prospect and economic benefit.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the O-ring groove of the present invention.
Fig. 3 is a schematic view of the connection structure of the O-ring groove of the present invention.
Description of the drawings: cylinder body 1, O ring groove 2, outer disc step 21, inner disc step 22, slot 23.
Detailed Description
Examples
An external valve shock absorber is shown in attached figures 1-3 and comprises a cylinder body 1 and O-ring grooves 2 arranged at two ends of the cylinder body 1.
In the embodiment, the device does not need a processing technology of necking two ends of a straight pipe of the cylinder body 1 and then processing a sealing ring groove at the necking position by utilizing a rolling groove technology, but two O-ring grooves 2 are assembled at two ends of the cylinder body 1 in an interference fit mode, and then the cylinder body is placed on a welding tool after press fitting is completed and then laser welding is carried out, wherein the laser welding is used for improving the connection strength.
In the present embodiment, the advantages of the connection structure of the cylinder block 1 and the O-ring groove 2 are as follows: firstly, the cylinder body 1 does not need a complex process of necking and rolling grooves, and the requirements on the material and the processing of the cylinder body 1 are greatly reduced; secondly, the O-ring groove 2 can be directly machined and formed, the matching size of the O-ring groove and the cylinder body 1 is easy to control, the precision is high, and the cost is low; thirdly, the structure does not need a die, so that the production is not influenced by the quantity, and the method can be applied to sample piece manufacturing and mass production.
In this embodiment, the O-ring groove 2 includes an outer circular surface step 21, an inner circular surface step 22, and a groove 23, and the outer circular surface step 21 is interference-fitted with the inner circular surface of the cylinder 1. The height range of the inner circular steps 22 is 0.1-0.2mm, and the specific data is suitable for ensuring that the inner circular steps 22 disappear after the interference fit press mounting is completed. The groove 23 is used for mounting an O-ring.
In the embodiment, the cylinder body 1 and the O-ring groove 2 adopt a mode of first production, then assembly and finally welding, so that the processing technology is simplified, the processing precision is improved, and the processing cost is reduced; the CPK capacity of the product in the production process can reach 1.38, the product percent of pass can reach more than 99 percent, and the production efficiency is doubled compared with the original production efficiency; and the production of the product is not influenced by the quantity, so that the method can be applied to small-batch production such as sample piece manufacturing and the like, is also applicable to large-batch production, and has good application prospect and economic benefit.
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 (2)
1. The middle cylinder for the external valve shock absorber is characterized by comprising a cylinder body (1) and O-ring grooves (2) arranged at two ends of the cylinder body (1); the O-ring groove (2) comprises an outer circular surface step (21), an inner circular surface step (22) and a groove (23), and the height of the inner circular surface step (22) is 0.1-0.2 mm.
2. The intermediate cylinder for an external valve shock absorber according to claim 1, wherein the outer circumferential surface step (21) is interference-fitted with the inner circumferential surface of the cylinder body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120816907.0U CN217301393U (en) | 2021-04-21 | 2021-04-21 | Middle cylinder for external valve shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120816907.0U CN217301393U (en) | 2021-04-21 | 2021-04-21 | Middle cylinder for external valve shock absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217301393U true CN217301393U (en) | 2022-08-26 |
Family
ID=82911952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120816907.0U Active CN217301393U (en) | 2021-04-21 | 2021-04-21 | Middle cylinder for external valve shock absorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217301393U (en) |
-
2021
- 2021-04-21 CN CN202120816907.0U patent/CN217301393U/en active Active
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