CN212106497U

CN212106497U - Telescopic rod

Info

Publication number: CN212106497U
Application number: CN202020690362.9U
Authority: CN
Inventors: 陈丽芳
Original assignee: Shenzhen Zaiwan Technology Co ltd
Current assignee: Shenzhen Zaiwan Technology Co ltd
Priority date: 2020-04-29
Filing date: 2020-04-29
Publication date: 2020-12-08
Anticipated expiration: 2030-04-29

Abstract

The utility model discloses a telescopic rod, a limiting part is arranged at the upper end port of an outer sleeve, the limiting part can prevent an inner sleeve from slipping out of an outer sleeve, and simultaneously, a damping effect is formed between the inner sleeve and the outer sleeve, and the damping effect between a guide part and the outer sleeve is matched, so that the inner sleeve and the outer sleeve can achieve sufficient damping effect in the sliding process, and the telescopic rod can realize the positioning effect of any position in the sliding stroke; the convex keys and the wire grooves are hidden in the outer sleeve, so that the telescopic pipe is high in appearance finish and more attractive; the limiting part and the guiding part are convenient to assemble, and the production efficiency of the product and the stability of the product are effectively improved.

Description

Telescopic rod

Technical Field

The utility model relates to a telescopic link technical field.

Background

The telescopic rod is a rod-shaped object which has a telescopic structure and can realize extension and contraction.

Our common telescopic link is through punching press sleeve pipe wall, use the wall to form the wire casing, the wire casing forms the convex line towards the inside part of sleeve pipe, in, fill the wire casing on the interior sleeve pipe through the convex line on the outer tube between the outer tube, in order to form sliding guide mechanism, simultaneously, this kind of structure requires that the internal diameter of interior sleeve pipe needs accurate the same with the internal diameter of outer tube, just can play stable laminating, thereby ensure that the telescopic link remains stable not skew the axis at flexible in-process, but in actual production, slight error can all influence in, laminating nature between the outer tube, so traditional telescopic link can not realize the effect that does not skew the axis basically, therefore, the phenomenon of curved bar can all come out when it extends that we see, and along with the increase of number of times of use, this kind of phenomenon can be more obvious. Secondly, because contact is inseparable between interior, the outer tube, can't vacate the space and set up limit structure, but in order to prevent that the phenomenon that breaks away from appears in interior, the outer tube, limit structure is indispensable in the telescopic link, so, common limit structure is for setting up the elastic construction at the sleeve pipe tip, for example chinese patent publication number is: the technical scheme disclosed in the utility model patent of CN208397070U, however, this kind of limit structure is not only complicated in structure, high in difficulty of production process, but also unstable in performance.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a telescopic link, the structure sets up rationally, the stable performance, production packaging efficiency is high, and the whole effectual of outward appearance to solve the problem that appears among the prior art.

In order to solve the technical problem, the technical scheme of the utility model is that: the utility model provides a telescopic link, includes the sleeve pipe, the sleeve pipe includes outer tube and interior sleeve pipe, outer tube and interior coaxial cover of sleeve pipe are established, and damping sliding connection, the axial is provided with the guide rail on the outer wall face of outer tube, the fixed guide that is provided with on the outer wall face of interior sleeve pipe, guide and guide rail direction sliding connection, outer tube upper end port department inlays and is equipped with the locating part, locating part and outer tube fixed connection, the locating part is connected with interior outer wall face damping of sleeve pipe, the guide is connected with outer tube internal face damping.

Preferably, the guide rail is an axial slot arranged on the inner wall surface of the outer sleeve, and a convex key which can be embedded into the slot and is in sliding connection with the slot is arranged on the outer wall surface of the guide piece.

Preferably, the guide is the same curved surface of internal diameter and interior sleeve pipe external diameter, and curved surface one side edge radially inwards extends and forms bordure, the guide sets up including sleeve pipe lower extreme port department, and through borduring restriction guide relative interior sleeve pipe axial displacement.

Preferably, the inner side of the guide part is provided with a positioning bolt, and the outer sleeve is circumferentially provided with a positioning hole for inserting the positioning bolt.

Preferably, the limiting member and the guiding member are both plastic members.

Preferably, the limiting piece is circumferentially provided with a convex line, and the inner wall surface of the port at the upper end of the sleeve is provided with a concave line which is matched and clamped with the convex line.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the utility model discloses, be provided with the locating part in outer sleeve's upper end port department, the locating part not only can prevent that interior sleeve pipe roll-off from the outer tube, forms damping effect simultaneously between the interior sleeve pipe, cooperates the damping effect between guide and the outer tube, can make inner and outer tube reach sufficient damping effect in the slip process to realize the effect of arbitrary position location in the slip stroke of telescopic link; the convex keys and the wire grooves are hidden in the outer sleeve, so that the telescopic pipe is high in appearance finish and more attractive; the limiting part and the guiding part are convenient to assemble, and the production efficiency of the product and the stability of the product are effectively improved.

Drawings

FIG. 1 is an exploded view of the structure of the present invention;

FIG. 2 is a schematic view of the structure of the guide member of the present invention;

FIG. 3 is a longitudinal sectional view of the sleeve of the present invention;

fig. 4 is a schematic view of the utility model in a contracted state;

fig. 5 is a schematic view of the extended state of the present invention.

In the figure: 1, sleeving a sleeve; 11, concave lines; 2, a guide rail; 3 a guide member; 31 a convex key; 32, edge covering; 33 positioning bolts; 4 a limiting part; 41 ribs; and 5, positioning the holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Please refer to fig. 1-5, a telescopic rod, including sleeve pipe 1, sleeve pipe 1 is provided with many, many sleeve pipe diameters are the regularity change, and establish from outside to inside coaxial sleeve in proper order according to the diameter size, lie in the outlying definition between two adjacent sleeve pipes and be the outer tube, lie in inboard definition and be interior sleeve pipe, outer tube and interior sleeve pipe coaxial sleeve establish, and damping sliding connection, the axial is provided with guide rail 2 on the outer tube internal wall, the fixed guide 3 that is provided with on the interior sleeve pipe outer wall, guide 3 and guide rail 2 direction sliding connection, outer tube upper end port department inlays and is equipped with locating part 4, locating part 4 and outer tube fixed connection, locating part 4 and interior sleeve pipe outer wall damping connection, guide 3 and outer tube internal wall damping connection.

The guide rail 2 is an axial line slot arranged on the inner wall surface of the outer sleeve, and a convex key 31 which can be embedded into the line slot and is in sliding connection with the line slot is arranged on the outer wall surface of the guide piece 3.

The guide 3 is the same curved surface of internal diameter and interior sleeve pipe external diameter, and curved surface one side edge radially inwards extends and forms bordure 32, sleeve pipe lower extreme port department including guide 3 sets up, and through borduring 32 restriction guide 3 is to interior sleeve pipe axial displacement relatively.

The inner side of the guide part is provided with a positioning bolt 33, the outer sleeve is circumferentially provided with a positioning hole 5 for inserting the positioning bolt 33, and when the positioning bolt 33 is inserted into the positioning hole 5, the guide part 3 can be limited to rotate relative to the inner sleeve to have axial displacement.

Locating part 4 and guide 3 are the plastic part, and the plastic part is favorable to producing and the sleeve pipe 1 between the coefficient of friction to produce the damping effect, the plastic part is for having certain elastic deformation attribute simultaneously, utilizes the exogenic action to carry out the deformation when the installation and clamps.

The locating part 4 sets up burr 41 on the circumference, be provided with on the sleeve pipe 1 upper end port internal face with burr 41 cooperation joint's concave line 11, locating part 4 utilizes burr 41 and concave line 11 to clamp each other and realizes fixed connection at sleeve pipe port department.

The assembling method comprises the following steps: the limiting part 4 is pressed and clamped at the upper end port of the outer sleeve to be fixedly connected with the outer sleeve, then the guiding parts 3 are distributed around the peripheral surface of the lower end of the inner sleeve, the positioning bolts 33 are inserted into the positioning holes 55, then the upper end of the inner sleeve is inserted into the lower end of the outer sleeve, when the guiding parts 3 reach the lower end port of the outer sleeve, the convex keys 31 are embedded into the wire grooves, then the guiding parts 3 are pressed by external force to be completely immersed into the outer sleeve, at the moment, one-time assembly is completed, and when the multi-section inner sleeve is arranged, the assembly process can be.

To sum up, the utility model discloses, be provided with locating part 4 at the upper end port department of outer tube, locating part 4 not only can prevent that interior sleeve pipe roll-off from the outer tube, forms damping effect simultaneously between the interior sleeve pipe, cooperates the damping effect between guide 3 and the outer tube, can make inner and outer tube reach sufficient damping effect in the sliding process to realize the effect of arbitrary position location in the slip stroke of telescopic link; the convex key 31 and the wire groove are hidden in the outer sleeve, so that the telescopic pipe is high in appearance finish and more attractive; the limiting part 4 and the guiding part 3 are convenient to assemble, and the production efficiency of the product and the stability of the product are effectively improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a telescopic link, includes sleeve pipe (1), sleeve pipe (1) includes outer tube and interior sleeve pipe, the coaxial cover of outer tube and interior sleeve pipe is established, and damping sliding connection, its characterized in that: the axial is provided with guide rail (2) on the outer tube internal face, fixed guide (3) that are provided with on the interior outer tube wall face of sleeve, guide (3) and guide rail (2) direction sliding connection, outer tube upper end port department inlays and is equipped with locating part (4), locating part (4) and outer tube fixed connection, locating part (4) and interior outer tube wall face damping are connected, guide (3) are connected with outer tube internal face damping.

2. A telescopic rod according to claim 1, characterized in that: the guide rail (2) is an axial wire casing arranged on the inner wall surface of the outer sleeve, and a convex key (31) which can be embedded into the wire casing and is in sliding connection with the wire casing is arranged on the outer wall surface of the guide piece (3).

3. A telescopic rod according to claim 1 or 2, characterized in that: guide piece (3) are the same curved surface of internal diameter and interior sleeve pipe external diameter, and curved surface one side edge radially inwards extends and forms bordure (32), sleeve pipe lower extreme port department including guide piece (3) set up, and through borduring (32) restriction guide piece (3) sleeve pipe axial displacement relatively.

4. A telescopic rod according to claim 1 or 2, characterized in that: the inner side of the guide piece is provided with a positioning bolt (33), and the circumferential direction of the outer sleeve is provided with a positioning hole (5) for the insertion of the positioning bolt (33).

5. A telescopic rod according to claim 1, characterized in that: the limiting part (4) and the guiding part (3) are plastic parts.

6. A telescopic rod according to claim 1, characterized in that: the limiting piece (4) is circumferentially provided with a convex pattern (41), and the inner wall surface of the port at the upper end of the sleeve (1) is provided with a concave line (11) which is matched and clamped with the convex pattern (41).