CN201090730Y - Piston rod - Google Patents
Piston rod Download PDFInfo
- Publication number
- CN201090730Y CN201090730Y CNU2007201232904U CN200720123290U CN201090730Y CN 201090730 Y CN201090730 Y CN 201090730Y CN U2007201232904 U CNU2007201232904 U CN U2007201232904U CN 200720123290 U CN200720123290 U CN 200720123290U CN 201090730 Y CN201090730 Y CN 201090730Y
- Authority
- CN
- China
- Prior art keywords
- rod
- guide sleeve
- piston rod
- inipple
- diameter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Fluid-Damping Devices (AREA)
Abstract
The utility model provides a piston rod, comprising a rod body which is provided with a screw tie-in; the outer diameter of the screw on the screw tie-in is smaller than the diameter of the rod body. The utility model is characterized in that a guide sleeve is arranged on the screw tie-in, and the internal threads matching with the screws on the screw tie-in are arranged in the guide sleeve; the outer diameter of the guide sleeve is the same as the outer diameter of the rod body. The piston rod greatly improves the installation precision of air seal and oil seal, and has the advantages of simple structure and convenient usage.
Description
Technical field:
The utility model relates to a kind of piston rod.
Background technique:
The existing piston bar comprises the body of rod, and the front end of the body of rod is provided with inipple, and the major diameter of thread on the described inipple is less than the diameter of the body of rod, and this piston rod causes dislocation and mechanical failure phenomenon easily when assembling oil sealing, sealing gland.
Summary of the invention:
The purpose of this utility model just provides a kind of piston rod, and this piston rod can be guaranteed the smooth installation of sealing gland, oil sealing.
The purpose of this utility model can realize by following scheme: the front end that comprises the body of rod, the body of rod is provided with inipple, major diameter of thread on the described inipple is less than the diameter of the body of rod, it is characterized in that on inipple, being provided with a guide sleeve, this guide sleeve the inside is provided with the internal thread that matches and use with screw thread on the inipple, and the external diameter of this guide sleeve is identical with the external diameter of the body of rod.
Because the external diameter of guide sleeve is identical with the external diameter of the body of rod, oil sealing and sealing gland are passed through smoothly, dislocation and mechanical failure phenomenon can not take place, this guide sleeve can screw out installing gentle being honored as a queen of oil sealing, the utility model has improved the installation precision of sealing gland, oil sealing greatly, have characteristics such as simple in structure, easy to use.
Description of drawings:
Fig. 1, the utility model structural representation
Embodiment:
Contrast Fig. 1 as can be known, the utility model comprises that the front end of the body of rod 1, the body of rod 1 is provided with inipple 3, major diameter of thread on the described inipple 3 is less than the diameter of the body of rod 1, it is characterized in that on inipple 3, being provided with a guide sleeve 2, these guide sleeve 2 the insides are provided with the internal thread that matches and use with screw thread on the inipple, and the external diameter of this guide sleeve is identical with the external diameter of the body of rod 1.
Claims (1)
1. piston rod, the front end that comprises the body of rod (1), the body of rod (1) is provided with inipple (3), major diameter of thread on the described inipple (3) is less than the diameter of the body of rod (1), it is characterized in that on inipple (3), being provided with a guide sleeve (2), this guide sleeve (2) the inside is provided with the internal thread that matches and use with screw thread on the inipple, and the external diameter of this guide sleeve is identical with the external diameter of the body of rod (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201232904U CN201090730Y (en) | 2007-08-23 | 2007-08-23 | Piston rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201232904U CN201090730Y (en) | 2007-08-23 | 2007-08-23 | Piston rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201090730Y true CN201090730Y (en) | 2008-07-23 |
Family
ID=39862490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201232904U Expired - Fee Related CN201090730Y (en) | 2007-08-23 | 2007-08-23 | Piston rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201090730Y (en) |
-
2007
- 2007-08-23 CN CNU2007201232904U patent/CN201090730Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080723 Termination date: 20120823 |