CN213511843U - Long-thread piston rod - Google Patents
Long-thread piston rod Download PDFInfo
- Publication number
- CN213511843U CN213511843U CN202021687183.6U CN202021687183U CN213511843U CN 213511843 U CN213511843 U CN 213511843U CN 202021687183 U CN202021687183 U CN 202021687183U CN 213511843 U CN213511843 U CN 213511843U
- Authority
- CN
- China
- Prior art keywords
- section
- piston rod
- shaft
- diameter section
- 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.)
- Active
Links
Images
Landscapes
- Fluid-Damping Devices (AREA)
Abstract
A long threaded piston rod comprises a first shaft section, a second shaft section and a third shaft section which are coaxially arranged, wherein the first shaft section comprises a first small-diameter section and a first large-diameter section; the third shaft section comprises a second small-diameter section and a second large-diameter section; the groove is formed in the first small-diameter section, a first external thread structure is arranged on the outer wall of the first small-diameter section, a first round hole is formed in the tail end of the first large-diameter section, the first large-diameter section is connected with one end of the second shaft section, a through hole is formed in the second shaft section, the other end of the second shaft section is connected with the second large-diameter section, a rolling groove is formed in the second shaft section, a second round hole is formed in the second large-diameter section, and a second external thread structure is arranged on the outer wall of the second small-diameter. The utility model relates to a long thread piston rod, simple structure, the connecting effect is good, long service life.
Description
Technical Field
The utility model relates to an automobile shock absorber ware subassembly, in particular to long threaded piston rod.
Background
The piston rod is used as one of the important parts of the automobile shock absorber, the piston rod is generally installed in a sleeve of the shock absorber, one end of the piston rod is supported against the sleeve, and the other end of the piston rod is used for fixing the shock-absorbing spring, so that the vibration of an automobile body can be weakened through the shock-absorbing spring when the automobile meets uneven road surfaces, and the piston rod plays a role in unloading force and avoiding vibration in order to prevent the reciprocating motion of the shock-absorbing spring. The piston rod in the prior art has various and complex structures, and when the piston rod passes through an uneven road surface, although the shock absorption spring can filter the shock of the road surface, the spring can still have reciprocating motion, the shock absorber is used for inhibiting the reciprocating motion of the spring, and the reciprocating motion enables the friction between the piston rod and an oil seal of a cylinder body to be more frequent, so that the service life of the piston rod is shortened.
SUMMERY OF THE UTILITY MODEL
【1】 Technical problem to be solved
The utility model aims at the above technical problem, a long thread piston rod of simple structure, long service life is provided.
【2】 Technical scheme for solving problems
A long threaded piston rod comprises a first shaft section, a second shaft section and a third shaft section which are coaxially arranged, wherein the first shaft section comprises a first small-diameter section and a first large-diameter section; the third shaft section comprises a second small-diameter section and a second large-diameter section; the groove is arranged in the first small-diameter section, a first external thread structure is arranged on the outer wall of the first small-diameter section, a first round hole is arranged in the tail end of the first large-diameter section, the first large-diameter section is connected with one end of the second shaft section, a through hole is formed in the second shaft section, the other end of the second shaft section is connected with the second large-diameter section, a rolling groove is formed in the second shaft section, a second round hole is formed in the second large-diameter section, and a second external thread structure is arranged on the outer wall of the second small-diameter section.
Further, the first shaft section, the second shaft section and the third shaft section are connected by friction welding.
Further, the first large-diameter section, the second shaft section and the second large-diameter section have the same outer diameter.
Furthermore, the cross section of the rolling groove comprises an oblique line section and an arc section, the included angle alpha between the oblique line section and the external tangent of the second shaft section is greater than or equal to 12 degrees and less than or equal to 18 degrees, and the radius of the arc section is greater than or equal to 0.7mm and less than or equal to 0.9 mm.
Furthermore, the groove is an inner hexagonal connecting hole.
Further, the second round hole is a stepped hole, a chamfer is arranged at the joint of the stepped hole, and the angle of the chamfer is 30 degrees.
Furthermore, a step section is arranged at the joint of the second small-diameter section and the second large-diameter section.
Further, the specification of the first external thread structure is M12X1.25-6 g.
【3】 Advantageous effects
The utility model relates to a long thread piston rod, simple structure, the connecting effect is good, long service life.
Drawings
Fig. 1 is a schematic structural view of a long threaded piston rod of the present invention;
fig. 2 is a top view of the long threaded piston rod of the present invention;
FIG. 3 is an enlarged schematic view of section A of FIG. 1;
fig. 4 is a schematic structural view of a third shaft section in the long-threaded piston rod of the present invention.
Detailed Description
The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1 to 4, the present invention provides a long threaded piston rod, which includes a first shaft section 1, a second shaft section 2 and a third shaft section 3 coaxially disposed, the second shaft section 2 is used as a main body of the piston rod, and the first shaft section 1 and the third shaft section 3 are used for connecting with the outside; the first shaft section 1 comprises a first small diameter section 101 and a first large diameter section 102, the ratio of the lengths of the first small diameter section 101 and the second shaft section 2 being about 1: 2; the third shaft section 3 comprises a second small diameter section 301 and a second large diameter section 302; a groove 12 is formed in the first small-diameter section 101, a first external thread structure 11 is arranged on the outer wall of the first small-diameter section 101, a first round hole 22 is formed in the lower end face of the first large-diameter section 102, the lower end face of the first large-diameter section 102 is connected with the upper end face of the second shaft section 2, a through hole 4 is formed in the second shaft section 2, the lower end face of the second shaft section 2 is connected with the upper end face of the second large-diameter section 302, a rolling groove 5 is formed in the second shaft section 2, a second round hole 32 is formed in the second large-diameter section 302, and a second external thread structure 31 is arranged on the outer wall of the second small-diameter section 301; in this embodiment, the first large diameter section 102, the second shaft section 2 and the second large diameter section 302 have the same outer diameter.
For the convenience of processing, the connection mode among the first shaft segment 1, the second shaft segment 2 and the third shaft segment 3 is friction welding in the present embodiment.
In order to facilitate processing, the cross section of the rolling groove 5 in this embodiment includes an oblique line segment and an arc segment, an included angle α between the oblique line segment and the external tangent of the second shaft segment 2 is greater than or equal to 12 ° and less than or equal to 18 °, and α is preferably 15 °; the radius of the circular arc section is more than or equal to 0.7mm and less than or equal to 0.9mm, the radius of the circular arc section is preferably 0.8mm, and the distance between the rolling groove 5 and the lower end face of the second small-diameter section 301 is 72 mm.
In order to achieve the effect of facilitating the connection, the groove 12 is a hexagon socket connection hole in the present embodiment.
The second round hole 32 is a stepped hole, a chamfer 321 is arranged at the joint of the stepped hole, and the angle of the chamfer 321 is 30 degrees; the inner diameter of the large-diameter section of the stepped hole and the inner diameter of the through hole 4 are equal to the inner diameter of the first round hole 22, and the stepped hole, the through hole 4 and the first round hole 22 are coaxially arranged.
In order to increase the application range, in this embodiment, a step section is provided at the connection point of the second small diameter section 301 and the second large diameter section 302.
The first external thread structure 11 has a specification of M12X1.25-6g, and the length of the first external thread structure 11 is greater than one third of the length of the first small diameter section 101 and less than one half of the length of the first small diameter section 101.
The piston rod is used as one of the important parts of the automobile shock absorber, the piston rod is generally installed in a sleeve of the shock absorber, one end of the piston rod is supported against the sleeve, and the other end of the piston rod is used for fixing the shock-absorbing spring, so that the vibration of an automobile body can be weakened through the shock-absorbing spring when the automobile meets uneven road surfaces, and the piston rod plays a role in unloading force and avoiding vibration in order to prevent the reciprocating motion of the shock-absorbing spring. The piston rod in the prior art has various and complex structures, and when the piston rod passes through an uneven road surface, although the shock absorption spring can filter the shock of the road surface, the spring can still have reciprocating motion, the shock absorber is used for inhibiting the reciprocating motion of the spring, and the reciprocating motion enables the friction between the piston rod and an oil seal of a cylinder body to be more frequent, so that the service life of the piston rod is shortened.
Compared with the prior art, the utility model relates to a long thread piston rod, simple structure, excellent in connection effect, and the utility model discloses a primary shaft section is longer, and it is right to can effectually alleviate frictional force when piston motion the utility model discloses a pressure to increase life.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art; the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. The utility model provides a long threaded piston rod, includes first shaft segment (1), second shaft segment (2) and third shaft segment (3) of coaxial setting, its characterized in that: the first shaft section (1) comprises a first small-diameter section (101) and a first large-diameter section (102); the third shaft section (3) comprises a second small-diameter section (301) and a second large-diameter section (302); be equipped with recess (12) in first path section (101), be equipped with first external screw thread structure (11) on the outer wall of first path section (101), be equipped with first round hole (22) in the tail end of first path section (102), first path section (102) with the one end of second axis section (2) is connected, be equipped with through-hole (4) in second axis section (2), the other end of second axis section (2) is connected second path section (302), be equipped with rolling groove (5) on second axis section (2), be equipped with second round hole (32) in second path section (302), be equipped with second external screw thread structure (31) on second path section (301) outer wall.
2. A long threaded piston rod according to claim 1, characterized in that the connection between the first shaft section (1), the second shaft section (2) and the third shaft section (3) is a friction weld.
3. The long threaded piston rod of claim 1 characterized in that the first large diameter section (102), the second shaft section (2) and the second large diameter section (302) have the same outer diameter.
4. The long threaded piston rod according to claim 1, characterized in that the cross section of the rolling groove (5) comprises a diagonal segment and a circular arc segment, the included angle α between the diagonal segment and the outer tangent of the second shaft segment (2) is greater than or equal to 12 ° and less than or equal to 18 °, and the radius of the circular arc segment is greater than or equal to 0.7mm and less than or equal to 0.9 mm.
5. A long threaded piston rod according to claim 1, characterized in that said recess (12) is a socket head.
6. A long threaded piston rod according to claim 1, characterized in that the second circular hole (32) is a stepped hole, the junction of which is provided with a chamfer (321), the angle of the chamfer (321) being 30 °.
7. The long threaded piston rod according to claim 1, characterized in that the junction of the second small diameter section (301) and the second large diameter section (302) is provided with a stepped section.
8. The long threaded piston rod according to claim 1, characterized in that said first external thread configuration (11) has a gauge of M12X1.25-6 g.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021687183.6U CN213511843U (en) | 2020-08-13 | 2020-08-13 | Long-thread piston rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021687183.6U CN213511843U (en) | 2020-08-13 | 2020-08-13 | Long-thread piston rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213511843U true CN213511843U (en) | 2021-06-22 |
Family
ID=76439958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021687183.6U Active CN213511843U (en) | 2020-08-13 | 2020-08-13 | Long-thread piston rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213511843U (en) |
-
2020
- 2020-08-13 CN CN202021687183.6U patent/CN213511843U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101881139B (en) | Thread connector of petroleum gas industrial tube | |
| CN213511843U (en) | Long-thread piston rod | |
| CN203570800U (en) | Hexagonal flange face bolt | |
| CN209960041U (en) | Shock-proof anti-loose butt-joint pipe joint device | |
| CN108032999A (en) | A kind of undercarriage buffer unit | |
| CN103241085B (en) | Ball socket bush structure connected to automobile chassis suspension control arm | |
| CN103438303A (en) | Oil pipe connection | |
| CN205824412U (en) | A kind of automobile-used high and low pressure metal tube leakproof joint | |
| CN103223832B (en) | Ball socket sleeve connected with automotive suspension control arm | |
| CN216577654U (en) | Bush press-fitting tool | |
| CN205278076U (en) | U -bolt locking sphere locknut | |
| CN106004293B (en) | A kind of ball pin and the connection structure of Independent Suspension swing arm | |
| CN110056724B (en) | Shock-absorbing and anti-loose butt joint pipe joint device | |
| US20210025426A1 (en) | Connection structure of bolt and nut with threads outlining symmetrically bidirectional tapered olive-like shape | |
| CN213511846U (en) | Hollow piston rod | |
| CN213511842U (en) | Hollow piston rod with cylinder on outer diameter | |
| CN207814293U (en) | A kind of novel vehicle plate spring | |
| CN201763754U (en) | High-strength bolt connection adaptor | |
| CN218934347U (en) | Concave-convex arc interference fit sealing special threaded joint for oil sleeve | |
| CN212657319U (en) | Pressure reducing valve structure | |
| CN205534690U (en) | Seal for pipe joints subassembly | |
| CN221004687U (en) | Liquefied petroleum gas cylinder | |
| CN211730957U (en) | Light weight type automobile control arm | |
| CN214248371U (en) | Connecting structure for ball opening and valve rod of fixed ball valve | |
| CN219712597U (en) | Oil drainage hydraulic pipe fitting with cone clamping sleeve sealing structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |