阅读说明：本技术 一种快速伸缩杆结构 (Quick telescopic rod structure ) 是由 张宏彬 卢金华 于 2020-04-29 设计创作，主要内容包括：本发明公开了一种快速伸缩杆结构,包括一级管、二级管和三级管。本发明的锁紧座上设有若干个锁紧片固定槽,锁紧片固定槽在管子的方向上具有一定的斜度,故锁紧片安装在锁紧片固定槽上也有和锁紧座固定槽一样的斜度,滑动块安装在锁紧座上,锁紧座上设有螺杆的过孔,螺杆可以穿过此孔,螺杆穿过弹簧穿过锁紧座上的过孔,将滑动块和锁紧座安装在一起,滑动块上设有若干个锁紧柱孔,锁紧柱安装在其上,锁紧柱既与锁紧片滚动接触摩擦,也与二级管的内壁滚动摩擦,通过弹簧的作用,锁紧座与滑动块时刻承受着弹簧的拉力,因为锁紧片有斜度,使得锁紧柱承受弹簧的拉力后向管子的法向方向运动。(The invention discloses a quick telescopic rod structure which comprises a primary tube, a secondary tube and a tertiary tube. The locking seat is provided with a plurality of locking sheet fixing grooves, the locking sheet fixing grooves have certain inclination in the direction of a pipe, so the locking sheets are arranged on the locking sheet fixing grooves and also have the same inclination as the locking seat fixing grooves, the sliding block is arranged on the locking seat, the locking seat is provided with a through hole of a screw rod, the screw rod can pass through the through hole, the screw rod passes through the through hole on the locking seat, the sliding block and the locking seat are arranged together, the sliding block is provided with a plurality of locking column holes, the locking columns are arranged on the sliding block, the locking columns are in rolling contact friction with the locking sheets and also in rolling friction with the inner wall of the diode, the locking seat and the sliding block bear the pulling force of the spring constantly under the action of the spring, and the locking columns have the inclination and move towards the normal direction of the pipe.)

1. A quick telescopic rod structure comprises a primary tube (11), a secondary tube (21) and a tertiary tube (31), and is characterized in that: the diode (21) is arranged between the primary tube (11) and the tertiary tube (31), and the primary tube (11) and the diode (21) are fixedly connected through the locking component (4).

2. The locking assembly (4) comprises a guide sheet (12), a sliding block (13), a locking column (14), a locking sheet (15), a locking seat (16), a spring (17), a screw rod (18), a push rod device (19) and a secondary beam ring (22), wherein the guide sheet (12) is installed on the surface of a primary tube (11), the secondary beam ring (22) is installed on the inner surface of a secondary tube (21), the locking seat (16) is installed in an installation hole in the inner wall of the primary tube (11), the locking sheet (15) is arranged in a fixing groove in the locking seat (16), the sliding block (13) is installed on the locking seat (16), the screw rod (18) sequentially penetrates through the spring (17) and the locking seat (16) to connect the sliding block (13) with the locking seat (16), the locking column (14) is installed in a locking column hole in the sliding block (13), and the surface of the locking column (14) is in rolling contact with the inner wall of the secondary tube (21), the ejector rod device (19) is arranged inside the primary pipe (11).

3. The structure of claim 1, wherein the telescopic rod comprises: the cross sections of the primary tube (11), the secondary tube (21) and the tertiary tube (31) are all quadrilateral.

4. The structure of claim 1, wherein the telescopic rod comprises: the surface of the locking column (14) is in rolling contact with the locking sheet (15).

5. The structure of claim 1, wherein the telescopic rod comprises: the surface of the locking column (14) is in rolling contact with the inner wall of the diode (21).

6. The structure of claim 1, wherein the telescopic rod comprises: the locking sheet (15) and the locking seat (16) are both inclined in the direction of the primary pipe (11).

Technical Field

The invention relates to the technical field of photographic equipment, in particular to a quick telescopic rod structure.

Background

At present, the tripod, from rapping bar, it is very wide to use on the telescopic link market such as unipod, generally adopts multistage flexible form mostly, adopts solitary locking structure between every grade pipe mostly, just so has when expanding and drawing in, need operate the locking structure of each two grades of pipes, reaches the purpose of using, and the progression of pipe is more, and the operation is complicated more, brings very big inconvenience for the user, for this reason we propose a quick telescopic link structure. Can save some middle operations for the user can be quick operation telescopic link, thereby reach quick, convenient purpose.

Disclosure of Invention

The present invention is directed to a quick telescopic rod structure, so as to solve the problems of the background art.

In order to achieve the purpose, the invention provides the following technical scheme: a quick telescopic rod structure comprises a primary tube, a secondary tube and a tertiary tube, wherein the secondary tube is arranged between the primary tube and the tertiary tube, and the primary tube is fixedly connected with the secondary tube through a locking assembly.

The locking assembly comprises a guide piece, a sliding block, a locking column, a locking piece, a locking seat, a spring, a screw, a push rod device and a secondary beam ring, wherein the guide piece is installed on the surface of the primary tube, the secondary beam ring is installed on the inner surface of the secondary tube, the locking seat is installed in an installation hole in the inner wall of the primary tube, the locking piece is arranged in a fixed groove in the locking seat, the sliding block is installed on the locking seat, the screw sequentially penetrates through the spring and the locking seat to connect the sliding block with the locking seat, the locking column is installed in a locking column hole in the sliding block, the surface of the locking column is in rolling contact with the inner wall of the secondary tube, and the push rod device is installed in the primary tube.

Preferably, the cross-sectional shapes of the primary tube, the secondary tube and the tertiary tube are all set to be quadrangle.

Preferably, the surface of the locking post is in rolling contact with the locking tab.

Preferably, the surface of the locking post is in rolling contact with the inner wall of the diode.

Preferably, the locking piece and the locking seat both have a slope in the direction of the primary pipe.

Compared with the prior art, the invention has the following beneficial effects:

1. the locking seat is provided with a plurality of locking sheet fixing grooves, the locking sheet fixing grooves have certain inclination in the direction of a pipe, so the locking sheets are arranged on the locking sheet fixing grooves and also have the same inclination as the locking seat fixing grooves, the sliding block is arranged on the locking seat, the locking seat is provided with a through hole of a screw rod, the screw rod can pass through the through hole, the screw rod passes through the through hole on the locking seat, the sliding block and the locking seat are arranged together, the sliding block is provided with a plurality of locking column holes, the locking columns are arranged on the sliding block, the locking columns are in rolling contact friction with the locking sheets and also in rolling friction with the inner wall of the diode, the locking seat and the sliding block bear the pulling force of the spring constantly under the action of the spring, and the locking columns have the inclination and move towards the normal direction of the pipe.

2. When the primary tube and the secondary tube have a contraction tendency, the friction force generated by the locking column and the inner wall of the secondary tube is larger than the friction force generated by the locking column and the locking sheet, so that the locking sheet generates reverse thrust to the locking column, and the thrust acts on the inner wall of the secondary tube, thereby achieving the locking between the two stages of tubes.

3. The push rod device is arranged in the primary tube, and the push rod device is pushed to the secondary tube by hand, so that the rotating shaft of the push rod props against the screw rod, the sliding block and the locking sheet are separated, and the locking column, the inner wall of the secondary tube and the locking sheet lose friction force. At the moment, the locking state of the two-stage pipe is released, and the two-stage pipe can be freely folded. The purpose of rapid furling is achieved.

4. When the two-stage tube is stretched, the sliding block and the locking seat have a relatively separated movement trend, and the locking column has a movement trend away from the inclined plane, so that the friction force generated by the locking column and the inner wall of the two-stage tube is smaller than the friction force generated by the locking sheet, and the two-stage tube can be directly stretched to achieve the purpose of rapid stretching.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an exploded view of a first stage, a second stage and a third stage of the present invention;

FIG. 3 is a schematic structural view of the locking assembly of the present invention;

FIG. 4 is an enlarged view of a portion of A-A of FIG. 3 in accordance with the present invention;

FIG. 5 is a schematic view of the installation structure of the ejector pin device of the present invention;

FIG. 6 is a cross-sectional view of the structure of the present invention;

fig. 7 is a cross-sectional view of a structure of a primary and secondary diode of the present invention.

FIG. 8 is a schematic structural view of a cross section of a tube of the present invention;

fig. 9 is a schematic structural diagram of embodiment 2 of the present invention.

In the figure: 11 first-class tubes, 21 second-class tubes, 31 third-class tubes, 4 locking assemblies, 12 guide pieces, 13 sliding blocks, 14 locking columns, 15 locking pieces, 16 locking seats, 17 springs, 18 screw rods, 19 ejector rod devices and 22 second-class beam rings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-8, a fast telescopic rod structure includes a primary tube 11, a secondary tube 21 and a tertiary tube 31, the cross-sectional shapes of the primary tube 11, the secondary tube 21 and the tertiary tube 31 are all set to be quadrilateral, the secondary tube 21 is arranged between the primary tube 11 and the tertiary tube 31, and the primary tube 11 and the secondary tube 21 are fixedly connected through a locking component 4.

The locking assembly 4 comprises a guide sheet 12, a sliding block 13, a locking column 14, a locking sheet 15, a locking seat 16, a spring 17, a screw rod 18, a push rod device 19 and a secondary binding ring 22, wherein the guide sheet 12 is arranged on the surface of the primary tube 11, the secondary binding ring 22 is arranged on the inner surface of the secondary tube 21, the locking seat 16 is arranged in a mounting hole on the inner wall of the primary tube 11, the locking sheet 15 is arranged in a fixing groove on the locking seat 16, the locking sheet 15 and the locking seat 16 are both inclined in the direction of the primary tube 11, the sliding block 13 is arranged on the locking seat 16, the screw rod 18 sequentially penetrates through the spring 17 and the locking seat 16 to connect the sliding block 13 with the locking seat 16, the locking column 14 is arranged in a locking column hole on the sliding block 13, the surface of the locking column 14 is in rolling contact with the locking sheet 15, the surface of the locking column 14 is in rolling contact with the inner wall of the secondary tube, the ram device 19 is installed inside the primary pipe 11.