CN213535807U

CN213535807U - Piston rod with protective sleeve

Info

Publication number: CN213535807U
Application number: CN202022409384.6U
Authority: CN
Inventors: 竺飞龙
Original assignee: Ningbo Changlong Jintai Machinery Technology Co ltd
Current assignee: Ningbo Changlong Jintai Machinery Technology Co ltd
Priority date: 2020-10-26
Filing date: 2020-10-26
Publication date: 2021-06-25
Anticipated expiration: 2030-10-26

Abstract

The application relates to a take piston rod of protective sheath, it includes piston rod and protective sheath, the protective sheath includes an one end open-ended protection section of thick bamboo and closing cap, a protection section of thick bamboo is equipped with the confession the protection chamber of piston rod holding, a protection section of thick bamboo with the closing cap passes through threaded connection. This application has the effect that the piston rod exists to receive external impact to cause deformation damage probability in the transportation storage process of reducing.

Description

Piston rod with protective sleeve

Technical Field

The application relates to the field of piston rods, in particular to a piston rod with a protective sleeve.

Background

The automobile shock absorber is a damping element in an automobile chassis system, and mainly has the main functions of attenuating the vibration generated in the driving process of an automobile, so that the service life of the automobile is prolonged, the smoothness and riding comfort of the automobile in the driving process are enhanced, and the driving safety and the operation stability are improved. The piston rod is one of the main components in the shock absorber.

The piston rod is mainly made of metal materials and is in a long cylinder shape. When existing piston rods are transported and stored, the existing piston rods are often placed in a pile, the outer surfaces of the piston rods are easily extruded mutually or deformed and damaged due to external impact, and the piston rods after deformation and damage possibly have the problems that the installation cannot be carried out or the sealing performance is reduced when the piston rods are installed in a matched mode with a piston cylinder body.

In view of the above-mentioned related art, the inventor believes that the piston rod is deformed and damaged by external impact during transportation and storage.

SUMMERY OF THE UTILITY MODEL

In order to solve the piston rod and deposit the in-process in the transportation and exist and receive external impact to cause the deformation to damage, this application provides a take piston rod of protective sheath.

The application provides a take piston rod of protective sheath adopts following technical scheme:

the utility model provides a take piston rod of protective sheath, includes piston rod and protective sheath, the protective sheath includes an one end open-ended protection section of thick bamboo and closing cap, a protection section of thick bamboo is equipped with the confession the protection chamber of piston rod holding, a protection section of thick bamboo with the closing cap passes through threaded connection.

Through adopting above-mentioned technical scheme, put into the protective sheath with the piston rod to reduce the piston rod and have mutual extrusion or receive external impact to cause the probability of deformation damage in the transportation storage process.

Optionally, the protection section of thick bamboo includes a bottom section of thick bamboo, can follow the folding pipe and the last connecting pipe of axis folding, a bottom section of thick bamboo with the folding pipe passes through screwed connection, the folding pipe with go up the connecting pipe and pass through threaded connection.

By adopting the technical scheme, the protection barrel is provided with the folding pipe which can be folded along the axial direction, the length of the folding pipe can be changed within a certain range, and the length of the plastic corrugated pipe can be correspondingly changed to adapt to and accommodate the piston rod when the length of the piston rod which needs to be accommodated in the protection sleeve is changed.

Optionally, the inner wall of the bottom barrel and the inner wall of the upper connecting pipe are circumferentially provided with elastic cushion blocks which abut against the side wall of the piston rod.

Through adopting above-mentioned technical scheme, elastic cushion and piston rod outer wall butt play the supporting role to the piston rod, and elastic cushion is flexible material and makes, can not harm the piston rod outer wall when contacting with the piston rod outer wall.

Optionally, the elastic cushion block comprises a supporting portion and an installation portion, a T-shaped head is arranged at one end of the supporting portion, and a T-shaped groove matched with the T-shaped head is formed in the installation portion.

Through adopting above-mentioned technical scheme, the cushion block divide into supporting part and installation department, and the supporting part passes through detachable connected mode with the installation department, and the supporting part has the multiple kind that thickness is different, when the piston rod diameter that needs the installation changes, realizes the corresponding adjustment to the piston rod diameter change of installation through the supporting part of changing different thickness to realize that the protective sheath all has holding complex function to the piston rod of different diameters of piston rod.

Optionally, the T-shaped headrest is close to the end face of the T-shaped groove, a plunger hole is formed in the end face of the T-shaped groove, a ball spring plunger is arranged in the plunger hole, and a clamping hole for clamping and matching a plunger ball of the ball spring plunger is formed in the bottom face of the T-shaped groove.

Through adopting above-mentioned technical scheme, T shape head and T-slot pass through the joint cooperation to through locating the downthehole bulb spring plunger of T shape head plunger and the joint hole joint of locating the T-slot, realize the location and the fixed of installation cushion and installation base installation.

Optionally, one end of the support part, which is far away from the T-shaped head, is provided with an anti-slip line.

Through adopting above-mentioned technical scheme, when the user opened the closing cap, go up the perhaps downward sloping of connecting pipe opening, the piston rod has the trend of sliding out the protective sheath downwards, sets up anti-skidding line and has increased the friction between piston rod and the installation cushion, has reduced the probability of piston rod roll-off protective sheath.

Optionally, the bottom of the bottom tube is provided with a first elastic gasket, and the bottom of the sealing cover is provided with a second elastic gasket.

Through adopting above-mentioned technical scheme, first elastic gasket and second elastic gasket protection piston rod both sides terminal surface.

Optionally, a rotating handle is arranged at the top end of the sealing cover.

Through adopting above-mentioned technical scheme, the setting up of rotatory handle makes things convenient for the user to rotate the closing cap.

Preferably, the rotating handle is connected with the cover by welding.

Through adopting above-mentioned technical scheme, the firm installation on the closing cap of rotatory handle, thereby the user can also hold between fingers rotatory handle through carrying and pick up the protective sheath.

Optionally, the outer wall of the bottom cylinder is provided with an annular convex part, and the inner wall of the bottom of the folding tube is provided with an annular groove corresponding to the annular convex part.

By adopting the technical scheme, when the plastic corrugated pipe is in threaded connection with the bottom barrel, the pre-positioning of the folding pipe and the bottom barrel is realized through the matching of the annular protrusion and the annular groove.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the piston rod is placed in the protective sleeve, so that the probability of deformation and damage caused by external impact during the transportation and storage process of the piston rod is reduced.

2. The supporting part of the elastic cushion block has different types with various thicknesses, and the supporting part and the mounting part are detachably connected, so that when the diameter of a piston rod to be accommodated is changed, the thickness of the supporting part can be correspondingly changed to adapt to and accommodate the piston rod;

3. the folding pipe can be changed within a certain range, and when the length of the piston rod to be accommodated in the protective sleeve is changed, the length of the folding pipe can be correspondingly changed to adapt to and accommodate the piston rod.

Drawings

Fig. 1 is a schematic view of a piston rod structure with a protective sleeve.

Fig. 2 is an exploded view of a piston rod with a protective sheath.

Fig. 3 is a schematic view of the installation structure of the bottom cylinder and the folding tube.

Fig. 4 is a schematic structural view of an upper connection pipe.

Fig. 5 is a schematic structural view of the base cartridge.

Fig. 6 is an enlarged schematic view of a portion a in fig. 4.

Fig. 7 is a structural sectional view of the resilient pad.

Description of reference numerals: 1. a piston rod; 2. a protective sleeve; 21. a protective cylinder 22 and a sealing cover; 221. a mounting boss; 2211. a second resilient pad; 222. rotating the handle; 23. a protection cavity; 24. a bottom cylinder; 241. an accommodating cavity; 242. a threaded hole; 243. an annular protrusion; 244. a first resilient pad; 25. folding the tube; 251. a folding section; 252. a first straight pipe section; 2521. an annular groove; 2522. a through hole; 2523. a bolt; 253. a second straight tube section; 26. an upper connecting pipe; 27. an elastic cushion block; 271. an installation part; 2711. a T-shaped slot; 2712. a clamping hole; 272. a support portion; 2721. a T-shaped head; 2722. a plunger hole; 2723. a ball spring plunger; 2724. and (4) anti-skid lines.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

The embodiment of the application discloses a piston rod with a protective sleeve. Referring to fig. 1, a piston rod 1 with a protective sleeve 2 comprises a piston rod 1 and the protective sleeve 2, the protective sleeve 2 comprises a protective cylinder 21 and a sealing cover 22, and the protective cylinder 21 is provided with a protective cavity 23 for accommodating the piston rod 1.

Referring to fig. 2, the protective tube 21 includes a bottom tube 24, a folding tube 25 connected to the bottom tube 24 and foldable in an axial direction, and an upper connection tube 26 connected to the folding tube 25 in this order.

Referring to fig. 2 and 3, the bottom cylinder 24 is cylindrical and has a receiving cavity 241 for receiving the piston rod 1. Two threaded holes 242 are symmetrically formed in the circumferential direction at one end of the outer wall of the bottom barrel 24, which is provided with the opening of the accommodating cavity 241.

Referring to fig. 2 and 3, the folding tube 25 is a cylindrical tube having a folding section 251, and when the folding tube 25 is stretched or compressed by an external force, the folding section 251 can perform a corresponding telescopic action along the axial direction thereof. The folded tube 25 is further provided with a first straight tube section 252 and a second straight tube section 253 at both ends of the folded section 251. The first straight pipe section 252 is connected to the bottom cylinder 24, and the second straight pipe section 253 is connected to the upper connection pipe 26.

Referring to fig. 3, the bottom cylinder 24 is provided with an annular projection 243, and the outer wall of the first straight pipe section 252 is provided with an annular groove 2521 which is correspondingly matched with the annular projection 243 of the bottom cylinder 24. When the first straight pipe section 252 is connected to the base cylinder 24, pre-positioning is performed by the engagement of the annular protrusion 243 with the annular recess 2521.

The first straight pipe section 252 has a through hole 2522 formed in an outer wall thereof corresponding to the threaded hole 242 in the outer wall of the bottom cylinder 24, the first straight pipe section 252 further has a bolt 2523 for connecting the bottom cylinder 24 and the collapsible pipe 25, a head of the bolt 2523 abuts against the outer wall of the bottom cylinder 24, and a rod of the bolt 2523 is threaded to the threaded hole 242 through the through hole 2522.

Referring to FIG. 2, the inner wall of the second straight pipe section 253 is provided with an internal thread near the opening, and the outer wall of the upper connecting pipe 26 is provided with an external thread in threaded connection with the internal thread of the second straight pipe section 253.

The length of the upper connecting pipe 26 is equal to that of the bottom barrel 24, and the inner wall of the upper connecting pipe 26, which is far away from the folding pipe 25, is provided with internal threads.

Referring to fig. 1, 4 and 5, four elastic cushion blocks 27 are circumferentially arranged on the inner wall of the upper connecting pipe 26 and the inner wall of the bottom tube 24 at intervals, and each elastic cushion block 27 comprises a mounting portion 271 and a supporting portion 272. The supporting portion 272 has various types with different thicknesses, and when the diameter of the piston rod 1 to be accommodated is changed, the supporting portion 272 with the corresponding thickness can be correspondingly replaced to adapt to and accommodate the piston rod 1.

Referring to fig. 6 and 7, one end of the supporting portion 272 close to the mounting portion 271 is provided with a T-shaped head 2721, and the side of the mounting portion 271 is provided with a T-shaped slot 2711 corresponding to the T-shaped head 2721 of the supporting portion 272. A plunger hole 2722 is formed in the middle of the end face, close to the T-shaped groove 2711, of the T-shaped head 2721, a ball spring plunger 2723 is arranged in the plunger hole 2722, and a clamping hole 2712 for clamping and matching a plunger ball of the ball spring plunger 2723 is formed in the bottom face of the T-shaped groove 2711.

Referring to fig. 2 and 6, one end of the support portion 272, which is far away from the T-shaped head 2721, is provided with an anti-slip texture 2724, when the piston rod 1 is placed into the protective sleeve 2, the support portion 272 is tightly attached to the outer wall of the piston rod 1, and when the piston rod 1 has a tendency to be pulled out of the protective sleeve 2, a large friction force exists between the support portion 272 and the piston rod 1, so that the probability that the piston rod 1 slides out quickly is reduced.

Referring to fig. 2, the cross-section of the sealing cap 22 is circular, the sealing cap 22 is provided with a cylindrical mounting protrusion 221, and the side wall of the mounting protrusion 221 is provided with an external thread which is in threaded fit with the internal thread of the upper connecting pipe 26; when the cap 22 is coupled to the upper connection pipe 26, the lower end surface of the cap 22 abuts against the upper end surface of the upper connection pipe 26.

The lower end of the mounting protrusion 221 of the cover 22 is further provided with a second elastic pad 2211, and the bottom tube 24 is provided with a first elastic pad 244 at the bottom of the accommodating cavity 241. The piston rod 1 is placed in the protective sleeve 2, and two ends of the piston rod abut against the first elastic gasket 244 and the second elastic gasket 2211, so that the two side end faces of the piston rod 1 are protected.

The lid 22 is further provided with a rotation knob 222 on an end surface away from the mounting protrusion 221, and the rotation knob 222 is connected to the lid 22 by welding.

The implementation principle of the embodiment of the application is as follows: the cover 22 of the protection sleeve 2 is unscrewed, the piston rod 1 is placed into the protection cavity 23 of the protection cylinder 21, the outer wall of the piston rod 1 is tightly attached to the supporting portion 272 of the elastic cushion block 27, and then the cover 22 is covered on the upper connecting pipe 26 of the protection sleeve 2 and is screwed, so that the two ends of the piston rod 1 are abutted to the first elastic gasket 244 and the second elastic gasket 2211, and the protection effect on the piston rod 1 is achieved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A take piston rod of protective sheath which characterized in that: including piston rod (1) and protective sheath (2), protective sheath (2) include a protection section of thick bamboo (21) and closing cap (22) of one end open-ended, a protection section of thick bamboo (21) are equipped with the confession protection chamber (23) of piston rod (1) holding, a protection section of thick bamboo (21) with closing cap (22) pass through threaded connection.

2. A piston rod with a protective sleeve as claimed in claim 1, wherein: the protection section of thick bamboo (21) include end section of thick bamboo (24), can follow folding pipe (25) and last connecting pipe (26) that the axis is folding, end section of thick bamboo (24) with folding pipe (25) pass through the screw connection, folding pipe (25) with go up connecting pipe (26) and pass through threaded connection.

3. A piston rod with a protective sleeve as claimed in claim 2, wherein: and elastic cushion blocks (27) which are abutted to the side wall of the piston rod (1) are arranged on the inner wall of the bottom barrel (24) and the inner wall of the upper connecting pipe (26) in the circumferential direction.

4. A piston rod with a protective sleeve as claimed in claim 3, wherein: the elastic cushion block (27) comprises a supporting portion (272) and an installation portion (271), a T-shaped head (2721) is arranged at one end of the supporting portion (272), and a T-shaped groove (2711) matched with the T-shaped head (2721) is formed in the side surface of the installation portion (271).

5. A piston rod with a protective sleeve according to claim 4, characterized in that: t shape head (2721) are close to T shape groove (2711) terminal surface is equipped with plunger hole (2722), be equipped with bulb spring plunger (2723) in plunger hole (2722), the tank bottom surface in T shape groove (2711) is equipped with the confession plunger ball joint complex joint hole (2712) of bulb spring plunger (2723).

6. A piston rod with a protective sleeve according to claim 5, characterized in that: one end of the support part (272) far away from the T-shaped head (2721) is provided with an antiskid grain (2724).

7. A piston rod with a protective sleeve according to claim 6, characterized in that: the bottom of the bottom barrel (24) is provided with a first elastic gasket (244), and the bottom of the sealing cover (22) is provided with a second elastic gasket (2211).

8. A piston rod with a protective sleeve according to claim 7, wherein: the top end of the sealing cover (22) is provided with a rotating handle (222).

9. A piston rod with a protective sheath as claimed in claim 8, wherein: the rotating handle (222) is connected with the cover (22) through welding.

10. A piston rod with a protective sheath as claimed in claim 9, wherein: the outer wall of the bottom barrel (24) is provided with an annular convex part (243), and the inner wall of the bottom of the folding tube (25) is provided with an annular groove (2521) corresponding to the annular convex part (243).