CN201228700Y

CN201228700Y - Device for positioning telescopic tube

Info

Publication number: CN201228700Y
Application number: CNU2008200848951U
Authority: CN
Inventors: 马跃凌
Original assignee: Individual
Current assignee: Hangzhou Normal University
Priority date: 2008-03-24
Filing date: 2008-03-24
Publication date: 2009-04-29
Anticipated expiration: 2018-03-24

Abstract

An extension tube locating device comprises an extension tube, an adjusting seat, an elastic pin and an outer tube, which is characterized in that one end of the outer tube is fixedly equipped with the adjusting seat, the elastic pin is fixedly placed in the extension tube, and the extension tube and the elastic pin are placed in the outer tube. When the elastic pin is clamped in an elastic pin hole on the outer tube, the extension tube and the outer tube are relatively fixed, when free extension is required, the elastic pin and the elastic pin hole on the outer tube are separated by pressing an elastic key by fingers, thereby enabling the extension rod to move freely. The extension tube locating device enables the contact type of fingers to be changed from point contact with relatively small area into surface contact with relatively large area during the using process, thereby guaranteeing fingers of users to bear small pressure during the using process, and enabling the operation to be more reasonable and safer. The utility model is beautiful in mode, and can be used as a leg height locating device of legs of desks and chairs or other furniture.

Description

The telescopic pipe positioning device

Technical field

The utility model relates to a kind of desk and chair, especially a kind of telescopic pipe positioning device.

Background technique

The structure of existing a kind of telescopic pipe positioning device, as shown in Figure 1, it is made up of telescopic pipe 1, termination point casing 2, bullet pin 3, outer tube 4.Down pin bullet pin 3 with finger during use, bullet pin 3 is separated with outer tube 4, in outer tube 4, freely stretch, when bullet pin 3 matches with another position, hole of outer tube 4 thereby can spur telescopic pipe 1, make the position relative fixed of telescopic pipe 1 and outer tube 4, reach the flexible purpose of adjusting.The shortcoming of this telescopic pipe positioning device is: at first, in regulating the telescopic process of telescopic pipe 1, bullet pin 3 and finger are to contact, and area of contact is little, push down bullet pin 3 when direct with finger, the reaction force that bullet pin 3 acts on the finger can make finger that bigger constriction is arranged; Be that the bullet pin is directly exposed outside then, influence the attractive in appearance of integral body.

Summary of the invention

The purpose of this utility model mainly provides the problems such as aesthetic property that a kind of telescopic pipe positioning device solves irrationality, Security and the product of the operation that exists in the telescopic pipe positioning device of desk and chair in the prior art.

Above-mentioned technical problem of the present utility model is solved by following technological scheme.

The utility model is made up of telescopic pipe 1, adjustment seat 2, bullet pin 3, outer tube 4, sees Fig. 2, it is characterized in that the end fixed installation adjustment seat 2 at outer tube 4, and adjustment seat 2 is made up of pedestal 21, flexible keypad 22, spherical boss 23, sees Fig. 3; The default pin-and-hole that plays on the outer tube 4, the spherical boss 23 on its Kong Weiyu adjustment seat 2 matches; The default pin-and-hole that plays plays the height that can locate as required the pin-and-hole position and controls on telescopic pipe 1, lays bullet pin 3 in telescopic pipe 1, and bullet pin 3 is fixed by playing pin-and-hole on the telescopic pipe 1; Telescopic pipe 1 and bullet pin 3 pass adjustment seat 2 and are placed in the outer tube 4, can freely stretch at outer tube 4 inwalls.When bullet pin-and-hole default on bullet pin 3 and the outer tube 4 overlapped, bullet pin 3 snapped in the bullet pin-and-hole on the outer tube 4, makes the position of telescopic pipe 1 and outer tube 4 reach relative fixed by bullet pin 3; When needing freely to stretch, only with hand refers to pin flexible keypad 22, allows the spherical boss 23 on the flexible keypad 22 withstand bullet pin 3, bullet pin 3 is separated with bullet pin-and-hole on the outer tube 4, thereby telescopic pipe 1 can be moved freely in outer tube 4.The way of contact that this telescopic pipe positioning device in use makes finger connects less some contact from face and changes the bigger face contact of area into, thereby ensureing that the user in use points bears less compressing power, makes operation more reasonable, and is safer; Flexible keypad 22 has hidden bullet pin 3 simultaneously, makes this device have more aesthetic property.

The utility model has the advantages that by pushing flexible keypad 22 and can regulate the relative position of outer tube 4 and bullet pin 3 easily, make the some operating of contacts of finger be converted to the face operating of contacts, thereby alleviated the constriction of finger, strengthened the rationality and the Security of this operation, and moulding has been also attractive in appearance.The utility model can be used for the pin pipe of desk, chair or the pin pipe height positioning device of other furniture.

Description of drawings

Fig. 1 is prior art constructions figure;

Fig. 2 is a structural drawing of the present utility model;

Fig. 3 is the structural drawing of adjustment seat of the present utility model;

Specific embodiments

Below by embodiment also in conjunction with the accompanying drawings, the technical solution of the utility model is described further.

Embodiment: telescopic pipe 1 and outer tube 4 adopt the metal pipe cutting to form, and play pin-and-hole by driling machine processing then; Adjustment seat 2 adopts the plastic monoblock molding and forming; Bullet pin 3 adopts the spring steel processing and fabricating to form.

Claims

1. telescopic pipe positioning device, it is characterized in that comprising telescopic pipe (1), adjustment seat (2), bullet pin (3), outer tube (4), in the installation adjustment seat (2) of outer tube (4), adjustment seat (2) is made up of pedestal (21), flexible keypad (22), spherical boss (23); Outer tube (4) is gone up the default pin-and-hole that plays, and the spherical boss (23) on its Kong Weiyu adjustment seat (2) matches.

2. a kind of telescopic pipe positioning device according to claim 1 is characterized in that said adjustment seat (2) and flexible keypad (22) are integrated.

3. a kind of telescopic pipe positioning device according to claim 2 is characterized in that said flexible keypad (22) is a U type cantilever style, makes flexible keypad (22) have elasticity preferably.

4. a kind of telescopic pipe positioning device according to claim 3 is characterized in that having spherical boss (23) on the said flexible keypad (22).