CN215214245U

CN215214245U - Telescopic rod

Info

Publication number: CN215214245U
Application number: CN202121237853.9U
Authority: CN
Inventors: 林杞然; 林巨灿
Original assignee: Zhongshan Xinsi Plastic Product Co ltd
Current assignee: Zhongshan Xinsi Plastic Product Co ltd
Priority date: 2021-06-03
Filing date: 2021-06-03
Publication date: 2021-12-17
Anticipated expiration: 2031-06-03

Abstract

The utility model discloses a telescopic link, include: a first pipe member; the rear end of the second pipe fitting is inserted into the first pipe fitting, and the second pipe fitting can slide along the axial direction of the first pipe fitting; the slip-preventing sheet is arranged on the outer side of the rear end of the second pipe fitting; the slip stopping sheet comprises a main body, the main body is provided with an outer side face and an inner side face, at least two convex ribs extending along the axial direction of the second pipe fitting are arranged on the inner side face, the at least two convex ribs are arranged at intervals along the circumferential direction of the second pipe fitting, and the main body between every two adjacent convex ribs forms an elastic deformation part. The utility model discloses a telescopic link provides the damping force for the relative slip of first pipe fitting and second pipe fitting through this elastic deformation portion, and for the drum face of traditional splitler, the internal face area of contact of this elastic deformation portion and first pipe fitting increases greatly to make the stretching and the shrink of telescopic link feel evenly, smooth and easy, the consumer experiences well, damping force decay rate greatly reduced moreover.

Description

Telescopic rod

Technical Field

The utility model relates to a flexible technical field especially relates to a telescopic link.

Background

The telescopic link extensively applies to each field, especially photographic goods field and electrical apparatus technical field, like the foot pipe of tripod, unipod, from rapping bar, flexible light filling lamp, live support, cell phone stand, folding fan etc.. The existing telescopic rod generally comprises a plurality of sub-tubes with gradually changing diameters from large to small, which are nested with each other, and a slip-preventing sheet for generating damping force between the two sub-tubes is arranged between the two adjacent sub-tubes. The earliest anti-slip sheet is made of copper, so that the anti-slip sheet is too strong in hardness, inflexible in structure, bad in hand feeling when the telescopic rod is stretched, large in friction sound, and inconvenient to process a copper reed. In order to solve the technical problem, some telescopic rods adopt plastic anti-slip sheets, a drum surface protruding towards the sub-pipe with the larger diameter is arranged on each anti-slip sheet, and the drum surface is abutted against the inner wall surface of the sub-pipe with the larger diameter to realize the positioning of the two adjacent sub-pipes. Because the anti-slip sheet bears large extrusion force and has a small thickness, after the anti-slip sheet is used for a period of time, the drum surface elastic force of the anti-slip sheet is greatly attenuated, so that the damping force between the sub-pipes is reduced, and the positioning effect is poor.

Disclosure of Invention

To the above-mentioned prior art current situation, the utility model aims to solve the technical problem that a long telescopic link of damping force duration is provided.

In order to solve the technical problem, the utility model provides a telescopic link, include: a first pipe member; a second pipe member, a rear end of which is inserted into the first pipe member, and which is slidable in an axial direction of the first pipe member; the sliding-stopping sheet is arranged on the outer side of the rear end of the second pipe fitting and is provided with a first end close to the rear end side of the second pipe fitting and a second end opposite to the first end; the slip stopping sheet comprises a main body, the main body is provided with an outer side face matched with the inner wall face of the first pipe fitting and an inner side face matched with the outer wall face of the second pipe fitting, at least two convex ribs extending along the axial direction of the second pipe fitting are arranged on the inner side face, the convex ribs are arranged at intervals along the circumferential direction of the second pipe fitting, and the main body between every two adjacent convex ribs is suspended to form an elastic deformation part.

The telescopic rod of the utility model provides damping force for the relative sliding of the first pipe fitting and the second pipe fitting through the elastic deformation part, compared with the drum surface of the traditional slip-stop sheet, the contact area of the elastic deformation part and the inner wall surface of the first pipe fitting is greatly increased, so that the telescopic rod has uniform and smooth stretching and shrinking hand feeling, and the consumer has good experience; moreover, the elastic deformation part has large area, the damping force attenuation speed is greatly reduced, and the service life of the product can be prolonged.

In one embodiment, a length of the rib in the axial direction is smaller than a length of the stopper piece in the axial direction, and the rib is close to the first end side of the stopper piece.

In one embodiment, a positioning hole is formed in the rear end of the second pipe, a positioning column matched with the positioning hole is arranged on the inner side surface of the sliding stopper, the positioning column is inserted into the positioning hole, and the positioning column is located between two adjacent convex ribs.

In one embodiment, one end of the convex rib close to the second end side of the sliding stop piece does not exceed the positioning column.

In one embodiment, the height of the convex rib is smaller than that of the positioning column.

In one embodiment, the number of the ribs is two, and the two ribs are respectively close to two side edges of the main body in the circumferential direction.

In one embodiment, the first end of the sliding-stopping piece is provided with a limiting step protruding towards the second pipe fitting side, and the limiting step is connected with the convex rib.

In one embodiment, the sliding-stopping pieces are two pieces, and the two pieces of sliding-stopping pieces are oppositely arranged on two sides of the rear end of the second pipe.

In one embodiment, the telescopic rod further comprises a limiting sleeve, the limiting sleeve is fixed at the front end of the first pipe fitting, and the limiting sleeve is matched with the anti-slip sheet to prevent the second pipe fitting from slipping.

In one embodiment, a positioning protrusion is arranged on the outer side surface of the limiting sleeve, and a positioning hole matched with the positioning protrusion is arranged on the first pipe fitting.

The advantageous effects of the additional features of the present invention will be explained in the detailed description of the preferred embodiments of the present description.

Drawings

Fig. 1 is a perspective view of a telescopic rod in an embodiment of the present invention;

FIG. 2 is an exploded view of the telescoping pole shown in FIG. 1;

FIG. 3 is a front view of the anti-slip sheet of the telescopic rod shown in FIG. 1;

FIG. 4 is a front view of the stop tab shown in FIG. 3;

fig. 5 is a sectional view taken along line a-a of fig. 4.

Description of reference numerals: 10. a first pipe member; 11. a front end of a first tube; 13. positioning holes; 20. a second pipe member; 22. a rear end of the second tube; 23. positioning holes; 30. a slip-stop sheet; 31. a main body; 311. a first end; 312. a second end; 313. an outer side surface; 314. an inner side surface; 315. an elastic deformation portion; 32. a rib is protruded; 33. A positioning column; 34. a limiting step; 40. a limiting sleeve; 41. and a positioning projection.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the features in the following embodiments and examples may be combined with each other without conflict.

In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the term "center" or the like is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the following description, for the purpose of convenience, a "first pipe 10" and a "second pipe 20" are taken as an example, but it is not understood that the telescopic rod in the embodiment only includes two pipes, and the telescopic rod may be provided with more than two pipes according to actual needs. The position between the "first pipe member 10" and the "second pipe member 20" is a relative position, that is, the "first pipe member 10" may be inserted into another pipe to become the "second pipe member 20", and the "second pipe member 20" may be sleeved outside another pipe to become the "first pipe member 10".

As shown in fig. 1-2, the telescopic rod of the first embodiment of the present invention includes a first pipe 10, a second pipe 20 and a non-slip sheet 30, wherein the first pipe 10 and the second pipe 20 are made of metal (such as aluminum) or other rigid materials, the inner diameter of the second pipe 20 is smaller than the outer diameter of the first pipe 10, and the second pipe 20 is inserted into the first pipe 10 and can slide along the axial direction of the first pipe 10. For convenience of description, one end of the first pipe 10 is defined as a rear end and the other end is defined as a front end 11. The second pipe element 20 is inserted into the first pipe element 10 with a rear end 22 at one end and a front end at the other end.

The sliding prevention piece 30 is disposed at the rear end 22 of the second pipe member 20 and is used for providing damping force for the relative sliding of the first pipe member 10 and the second pipe member 20, and the sliding prevention piece 30 has a first end 311 close to the rear end side of the second pipe member 20 and a second end 312 opposite to the first end 311. Preferably, the anti-slip sheet 30 is two sheets, and the two anti-slip sheets 30 are oppositely installed at both sides of the rear end 22 of the second pipe 20. The anti-slip sheet 30 is made of plastic or other elastic material.

As shown in fig. 3 to 5, the anti-slip sheet 30 includes a main body 31, the main body 31 has an outer side surface 313 matched with the inner wall surface of the first pipe 10 and an inner side surface 314 matched with the outer wall surface of the second pipe 20, two (or more) ribs 32 extending along the axial direction of the second pipe 20 are provided on the inner side surface 314 of the main body 31, the two ribs 32 are arranged at intervals along the circumferential direction of the second pipe 20, and the main body 31 between the two ribs 32 forms an elastic deformation portion 315. The elastic deformation part 315 provides damping force for the relative sliding between the first pipe fitting 10 and the second pipe fitting 20, and compared with the drum surface of the traditional slip-stopping sheet 30, the contact area between the elastic deformation part 315 and the inner wall surface of the first pipe fitting 10 is greatly increased, so that the stretching and shrinking handfeel of the telescopic rod is uniform and smooth, and the consumer experience is good; moreover, the elastic deformation part 315 has a large area, so that the damping force attenuation speed is greatly reduced, and the service life of the product can be prolonged.

Preferably, the length of the rib 32 is smaller than that of the sliding stop piece 30, and the rib 32 is close to one side of the first end 311 of the sliding stop piece 30. Thus, the entire thickness of the second end 312 of the body 31 is smaller than the entire thickness of the first end 311, and the second pipe member 20 and the anti-slip sheet 30 can be easily inserted into the first pipe member 10 during assembly.

Preferably, a positioning hole is disposed at the rear end of the second pipe 20, a positioning column 33 matched with the positioning hole is disposed on the inner side surface 314 of the sliding stopper 30, and the positioning column 33 is located between two adjacent ribs 32 to avoid the ribs 32. It is further preferable that an end of the rib 32 close to the second end 312 of the slide stopper 30 does not exceed the positioning column 33. It is found through experiments that if one end of the rib 32 close to the second end 312 of the sliding stopper 30 exceeds the positioning column 33, the inner side surface 314 of the main body 31 around the positioning column 33 is separated from the outer wall surface of the second pipe 20, the contact area between the positioning column 33 and the positioning hole is reduced, so that the connection strength between the sliding stopper 30 and the second pipe 20 is reduced, the sliding stopper 30 is easy to fall off during stretching, and therefore, one end of the rib 32 close to the second end 312 of the sliding stopper 30 is not larger than the positioning column 33.

In this embodiment, the number of the ribs 32 is two, and the ribs 32 are respectively close to the two side edges of the main body 31 in the circumferential direction, so that the area of the elastic deformation portion 315 is the largest, and the damping effect is better.

In one embodiment, the telescopic rod further comprises a limiting sleeve 40, the limiting sleeve 40 is fixed at the front end of the first pipe 10, and the limiting sleeve 40 is matched with the anti-slip sheet 30 to prevent the second pipe 20 from slipping off. As shown in fig. 2, the outer side 313 of the position-limiting sleeve 40 is provided with a positioning protrusion 41, and the first pipe 10 is provided with a positioning hole 13 engaged with the positioning protrusion 41.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims

1. A telescoping pole, comprising:

a first pipe member;

a second pipe member, a rear end of which is inserted into the first pipe member, and which is slidable in an axial direction of the first pipe member; and

a slip stopper provided outside a rear end of the second pipe, the slip stopper having a first end close to a rear end side of the second pipe and a second end opposite to the first end;

the anti-slip piece is characterized by comprising a main body, wherein the main body is provided with an outer side face matched with the inner wall face of the first pipe fitting and an inner side face matched with the outer wall face of the second pipe fitting, at least two convex ribs extending along the axial direction of the second pipe fitting are arranged on the inner side face, the at least two convex ribs are arranged at intervals along the circumferential direction of the second pipe fitting, and the main body between every two adjacent convex ribs is suspended to form an elastic deformation part.

2. The extension rod of claim 1, wherein a length of the rib along the axial direction is less than a length of the slip stop along the axial direction, and the rib is proximate to the first end side of the slip stop.

3. The telescopic rod according to claim 2, wherein a positioning hole is formed in the rear end of the second pipe, a positioning column matched with the positioning hole is arranged on the inner side surface of the sliding stopper piece, the positioning column is inserted into the positioning hole, and the positioning column is located between two adjacent ribs.

4. The extension rod of claim 3, wherein an end of the rib adjacent to the second end of the sliding stopper does not extend beyond the positioning post.

5. The telescoping pole of claim 3, wherein the height of said rib is less than the height of said positioning post.

6. The telescopic rod according to claim 1, wherein the number of the ribs is two, and the two ribs are respectively close to two side edges of the main body in the circumferential direction.

7. The telescopic rod according to any one of claims 1 to 6, wherein the first end of the sliding stopper is provided with a limiting step protruding towards the second pipe fitting side, and the limiting step is connected with the convex rib.

8. The telescopic rod according to any one of claims 1 to 6, wherein the sliding stopper is provided in two pieces, and the two pieces of sliding stopper are oppositely installed at both sides of the rear end of the second pipe.

9. The telescopic rod according to any one of claims 1 to 6, further comprising a limiting sleeve fixed to the front end of the first pipe fitting, wherein the limiting sleeve cooperates with the anti-slip sheet to prevent the second pipe fitting from slipping off.

10. The telescopic rod according to claim 9, wherein a positioning protrusion is provided on an outer side surface of the position-limiting sleeve, and a positioning hole matched with the positioning protrusion is provided on the first pipe fitting.