CN202348868U

CN202348868U - Foot pipes locking device

Info

Publication number: CN202348868U
Application number: CN2011202184251U
Authority: CN
Inventors: 张宏彬
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-06-24
Filing date: 2011-06-24
Publication date: 2012-07-25
Anticipated expiration: 2021-06-24

Abstract

The utility model discloses a foot pipes locking device, which belongs to photographic equipment technology field, and comprises a first level pipe fitting, a second level pipe fitting and a anti-slip piece; the upper end of the second level pipe fitting is inserted into the first level pipe fitting and can slide along axial direction inside the first level pipe fitting; the external surface on the end of the upper end of the second level pipe fitting is provided with a pipe expanding surface; the anti-slip piece is arranged between the gap that is formed because of the pipe expanding surface between the first level pipe fitting and the second level pipe fitting; the anti-slip piece can move back and forth along the expansion direction of the pipe expanding surface; the anti-slip piece is provided with a locating piece; a axial limiting hole is provided on the wall of the second level pipe fitting corresponding to the locating piece; the locating piece is arranged inside the axial limiting hole and can move in a circumferential direction inside it. The utility model is provided with simple and convenient operation; tighten or loosen the foot pipes can be realized only by counterrotating the foot pipes when expand or furl the foot pipes.

Description

The pin pipe locking device

Technical field

The utility model belongs to the photographic goods technical field, is the pin pipe locking device of tripod specifically.

Background technique

Tripod is widely used in fields such as photography as a kind of portable support frame.Pin pipe for tripod generally all is to be designed to the more piece telescopic type, in use, needs to continue to take out next pipe joint again after the rotational fixation during every extraction one pipe joint; Like this, if when a lot of root pipe is arranged, just open fully must rotation many times; Equally; When drawing in, just can draw in after need every pipe joint being unscrewed, very trouble.

Summary of the invention

To the situation of present pin pipe locking device step trouble when launching and draw in, the utility model aims to provide a kind of pin pipe locking device easy to use.

For realizing above-mentioned purpose; The utility model has adopted following technological scheme: the pin pipe locking device; Comprise one-level pipe fitting, secondary pipe fitting and on-slip sheet, secondary pipe fitting upper end is inserted in the one-level pipe fitting and can in the one-level pipe fitting, be slided vertically, and said secondary pipe fitting upper end end outer surface is established the expand tube face; The on-slip sheet is located in the gap that forms because of the expand tube face between one-level pipe fitting and the secondary pipe fitting, and this on-slip sheet can move around along expand tube surface expansion direction.

Further, on the on-slip sheet, establish positioning block, and on the secondary pipe wall, establish the axial limiting hole with respect to the band of position of this positioning block, positioning block is located in the axial limiting hole and can circumferentially moves above that.

Further, said one-level pipe fitting and secondary pipe fitting are two rib pipes.

Further, the expand tube face on the said secondary pipe fitting is made as two, and the expansion direction of this expand tube face is consistent, and the rib dislocation in these two expand tube faces and the one-level pipe fitting is arranged.

More further, said on-slip sheet is two, and it is corresponding with two expand tube faces on the secondary pipe fitting.

Further, said on-slip sheet is the arc slide plate, and its thickness is along circumferentially successively decreasing.

After adopting said structure; Under the prerequisite of concentric circle law and friction factor,, make that the area of contact between on-slip sheet and the expand tube face changes through relatively rotating of one-level pipe fitting and secondary pipe fitting; And then make and between one-level pipe fitting and the secondary pipe fitting eccentric phenomena takes place; Make it produce certain coupling mechanism force each other, secondary pipe fitting and on-slip sheet just can be braked in the one-level pipe fitting like this, reach the purpose of locking; On the contrary, relatively rotating between one-level pipe fitting and the secondary pipe fitting, it is concentric to make that one-level pipe fitting and off-centre between the secondary pipe fitting become again, like this, coupling mechanism force dissipates, and does not have stress between one-level pipe fitting and the secondary pipe fitting, can be vertically between mutual pull.

The beneficial effect of the utility model is: easy to use, the pin pipe only needs rotation once can lock effectively upon deployment, on the contrary, also only needs once can the bipod pipe be unclamped toward the opposite direction rotation.

Description of drawings

Fig. 1 is the decomposition texture schematic representation of the utility model;

Fig. 2 is the sectional view of structure shown in Figure 1.

Embodiment

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.

A kind of embodiment as the utility model; Referring to Fig. 1, this pin pipe locking device comprises on-slip sheet 3; Use two calibers two rib aluminum pipes not of uniform size as one-level pipe fitting 1 and secondary pipe fitting 2; Secondary pipe fitting 2 upper ends are inserted in the one-level pipe fitting 1 and can in one-level pipe fitting 1, be slided vertically, and said secondary pipe fitting 2 upper end end outer surface are established expand tube face 7, and this expand tube face 7 radially evenly expands; On-slip sheet 3 is located in the gap that forms because of expand tube face 7 between one-level pipe fitting 1 and the secondary pipe fitting 2, and can in the gap, move around along expand tube face 7 expansion directions.In order better on-slip sheet 3 to be limited to secondary pipe fitting 2 upper ends; So on on-slip sheet 3, establish positioning block 5; And on secondary pipe fitting 2 walls, establish axial limiting hole 6 with respect to the band of position of this positioning block 5, positioning block 5 is located in the axial limiting hole 6 and can circumferentially moves above that, secondary pipe fitting 2 in one-level pipe fitting 1 on during drop-down taking out; Positioning hole 5 can prevent that on-slip sheet 3 from coming off, but also can play the locking effect of quickening on-slip sheet 3.

Expand tube face 7 on the said secondary pipe fitting 2 is made as two; And the expansion direction of this expand tube face 7 is consistent; This two expand tube faces 7 are arranged with the rib dislocation in the one-level pipe fitting 1, and said on-slip sheet 3 is two, and it is corresponding with two expand tube faces 7 on the secondary pipe fitting 2; Said on-slip sheet 3 is the arc slide plate, and its thickness is along circumferentially successively decreasing.

Referring to Fig. 2; The gap of a surface of contact is arranged between arc surface 4 in the on-slip sheet 3 and the secondary pipe fitting 2, mainly is the gap between arc surface 4 and the expand tube face 7, when rotating counterclockwise secondary pipe fitting 2; The gap of surface of contact is more and more littler; Under the prerequisite of concentric circle law and friction factor, secondary pipe fitting 2 can be braked in one-level pipe fitting 1 with on-slip sheet 3, and keeps certain coupling mechanism force; When forwarding secondary pipe fitting 2 clockwise to, on-slip sheet 3 has been got back to the state that keeps certain interval again with secondary pipe fitting 2, reaches no stress, and like this, secondary pipe fitting 2 just can pull expansion or contraction up and down in one-level pipe fitting 1.

Claims

1. pin pipe locking device; Comprise one-level pipe fitting, secondary pipe fitting and on-slip sheet; Secondary pipe fitting upper end is inserted in the one-level pipe fitting and can in the one-level pipe fitting, be slided vertically; It is characterized in that: said secondary pipe fitting upper end end outer surface is established the expand tube face, and the on-slip sheet is located in the gap that forms because of the expand tube face between one-level pipe fitting and the secondary pipe fitting, and this on-slip sheet can move around along expand tube surface expansion direction.

2. pin pipe locking device according to claim 1; It is characterized in that: on said on-slip sheet, establish positioning block; And on the secondary pipe wall, establish the axial limiting hole with respect to the band of position of this positioning block, positioning block is located in the axial limiting hole and can circumferentially moves above that.

3. pin pipe locking device according to claim 1 is characterized in that: said one-level pipe fitting and secondary pipe fitting are two rib pipes.

4. pin pipe locking device according to claim 3 is characterized in that: the expand tube face on the said secondary pipe fitting is made as two, and the expansion direction of this expand tube face is consistent, and the rib dislocation in these two expand tube faces and the one-level pipe fitting is arranged.

5. pin pipe locking device according to claim 4 is characterized in that: said on-slip sheet is two, and it is corresponding with two expand tube faces on the secondary pipe fitting.

6. according to claim 1 or 5 described pin pipe locking devices, it is characterized in that: said on-slip sheet is the arc slide plate, and its thickness is along circumferentially successively decreasing.