CN2921402Y

CN2921402Y - Moving bar piece positioning device

Info

Publication number: CN2921402Y
Application number: CN 200620097044
Authority: CN
Inventors: 郑世平; 郑世飞
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-06-01
Filing date: 2006-06-01
Publication date: 2007-07-11
Anticipated expiration: 2016-06-01

Abstract

The utility model relates to a moving bar piece positioning device, which comprises a bar chamber for passing through of a moving bar piece, a cam base integrated with the bar chamber, a cam with a handle axially positioned on the cam seat, a slotted hole in the bar chamber towards the cam side and a stopper in the slotted hole with bottom touched by the cam surface. The cam can jack the stopper which has friction with the bar piece surface to position the moving bar piece. The moving tendency of the bar piece can be transformed into the compression to the slotted hole edge by the stopper, thus protecting the cam surface free from friction. The utility model has reasonable design, simple structure and reliable positioning and substantially solves disadvantages of slipping and wearing in moving bar piece positioning.

Description

Movable rod member positioning device

Technical field:

The utility model belongs to a kind of positioning device of movable rod member, especially a kind of being widely used on the small stores such as foldable chair, tent as the location between movable rod member.

Background technique:

The location of existing movable rod member is varied, and common have bolt to contact that the position is held firmly in location, bar fit and cam orientation is several, adopts the bolt location to need assistant tool, and operation comparatively bothering, and tooth is apart from weak point, and operational stroke is long; The cam orientation operational stroke is shorter relatively, but that cam needs is directly inconsistent and hold out against with rod member or bar cover, stirs the steering force of cam and wants big, otherwise camming surface can not hold out against rod member, and it is unreliable to locate, and is easy to slide, both surface of contact also are easy to produce wearing and tearing, and lose the usefulness of location.Above-mentioned all position structures, how the trend of all exist sliding hold out against cam the location and change into the surface friction positioning instant and become the utility model research topic.

Summary of the invention:

The purpose of this utility model is a kind of movable rod member positioning device that utilizes the friction location of design.

Technical solutions of the utility model are achieved in that a kind of motion bar positioning device, the bar chamber that comprises-can pass for movable rod member, cam chair with bar chamber disjunctor, wherein axle is positioned with a band handle cam on the cam chair, the bar chamber offers a slotted eye towards cam one side, be placed with in the slotted eye can be conflicted by camming surface in a bottom and chock.The action of cam can be with chock jack-up, produces friction geocoded activity rod member by chock surface and rod member surface, moreover the mobile trend of rod member is transferred to compressing to the slotted eye edge by chock, and the protection cam face is not subjected to the influence of frictional force.

Described chock is provided with groove towards the surface in bar chamber, and the tooth bar that coincide with groove can lock on rod member.Utilize groove and tooth bar to cooperate, make surface both friction location become engagement and pin.

The utlity model has reasonable in designly, simple in structure, the location reliable characteristics solves the defective that has slippage, wearing and tearing in the motion bar spare location substantially.

Description of drawings:

Below in conjunction with concrete legend the utility model is described further:

The movable rod member positioning device of Fig. 1 stereogram

The graph of a relation of movable rod member positioning device of Fig. 2 and rod member

The movable rod member positioning device of Fig. 3 sectional view

Movable rod member positioning device of Fig. 4 and rod member three-dimensional exploded view

Wherein

The movable rod member of 1-cam chair 2-bar chamber 21-slotted eye 3-

1-guide shaft 5-band handle cam 6-chock 61-groove

62-guide groove base 63-groove piece 7-tooth bar 8-pin-and-hole

Embodiment:

With reference to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, a kind of motion bar positioning device is by the plastic material moulding, cam chair 1 is provided with-the bar chamber 2 that can pass for movable rod member 3, be positioned with-be with handle cam 5 by guide shaft 4 on the cam chair 1, bar chamber 2 offers a slotted eye 21 towards cam one side, be placed with a chock 6 in the slotted eye 21, can be conflicted by cam 5 surfaces and reach in its bottom, also be that cam 5 can make its rising or decline.

In order to increase the stop ability of chock, chock 6 is provided with groove 61 towards the surface in bar chamber 2, and the tooth bar 7 that coincide with groove 61 can lock on rod member.Described chock 6 is made up of guide groove base 62 and the groove piece 63 that be located in the guide groove base 62 for dividing body structure, not only is convenient to moulding, and also convenient employing heterogeneity material is made the chock with different stopping effects.

Also be provided with on the cam chair 1 for third party's rod member location and reserve pin-and-hole.Utilization activity rod member positioning device closes conjuncted as the transition between two rod members or many rod members, realize the location to a certain movable rod member position.Movable rod member 3 is round material in the legend, also is suitable for the section bar of square material or other cross section structure, as long as bar chamber 2 is corresponding with it.

In this example best installation direction for band handle cam 5 down, this structure sheds conflict to chock 6 when cam 5, chock 6 can rely on self gravitation to fall, and removes sealed to movable rod member.If need movable rod member in vertical applications, can set up Returnning spring at chock 6 and bar chamber 2 or 21 of slotted eyes, utilize spring to keep chock all the time away from 2 surfaces, bar chamber, only under acting on, cam 5 just overcomes spring force to the projecting inward pinning rod member in bar chamber.The position structure of movable rod member for moving along axis can be widely used in such as on the products such as adjustable back chair in this example; And be the ring-type tooth bar when changing tooth bar, the groove of chock is correspondence with it, promptly can be applicable to motion bar spare and be the location on the turning shaft structure, also is the lock shaft structure, such as have directivity product orientation base as sunshade etc.

Claims

1, a kind of motion bar positioning device, comprise the bar chamber that to pass for movable rod member and the cam chair of bar chamber disjunctor, it is characterized in that axle is positioned with a band handle cam on the cam chair, the bar chamber offers a slotted eye towards cam one side, be placed with in the slotted eye can be conflicted by camming surface in a bottom and chock.

2, motion bar positioning device according to claim 1 is characterized in that chock is provided with groove towards the surface in bar chamber, and the tooth bar that coincide with groove can lock on rod member.

3, according to claim 1 or 2 described motion bar positioning devices, it is characterized in that chock is the branch body structure, form by guide groove base and the groove piece that be located in the guide groove base.

4, motion bar positioning device according to claim 1 is characterized in that cam chair is provided with third party's rod member location and reserves pin-and-hole.