CN2088614U

CN2088614U - Draw rod back moving against device

Info

Publication number: CN2088614U
Application number: CN 91210100
Authority: CN
Inventors: 王石志
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-01-19
Filing date: 1991-01-19
Publication date: 1991-11-13

Abstract

The utility model provides a draw rod back moving against device fundamentally composed of an outer tube and an inner tube in sleeve joint, which is characterized in that the inner of the inner tube is provided with a connecting rod, the upper end of which is connected with the pushing handle arranged outside the inner tube wall and the lower end penetrates through the spring retainer, the pressure spring to connect with the awl post, the lower part of which is provided with a lug boss. The inner tube wall corresponding to the conical surface on the lower part of the awl post is provided with through holes having steel balls. The utility model can be widely used for facilities requiring adjustment of height, such as transfusion stand, floor lamp, music stand, fan, microphone support, etc.

Description

Draw rod back moving against device

The utility model relates to a kind of pull bar check device.

Existing pull bar check device, mainly be to socket-connect by outer tube and interior pipe to form, its non-return mode mainly contains two kinds of forms, a kind of is at the threaded through hole of outer tube upper end portion processing belt, and loads onto corresponding jackscrew in through hole, reaches the purpose of non-return with this, when adjusting height, at first unclamp jackscrew, pipe tightens jackscrew again in the pulling when waiting to reach needed height; Another kind is that the tube wall on the outer tube is processed into up-thin-low-thick tip shape, and have several axial ports, be threaded with the outer tube upper end with one again, and endoporus also is that up-thin-low-thick pipe collar is coupled, during downward so stubborn pipe collar, pipe in the outer tube upper end is inwardly shunk and clamped, at first upwards twist pipe collar when adjusting height and unclamp interior pipe, pipe in the pulling is tightened pipe collar after having adjusted and is got final product then, more than two kinds of non-return modes all to exist adjustment highly time-consuming, effort, particularly usually make it to lose the adjustment function owing to get rusty, or folder is not tight, or twists motionlessly, causes and does not promptly adjust highly after using a period of time.

For overcoming the shortcoming of existing pull bar check device, it is a kind of easy to adjust that the utility model provides, fast, and a kind of pull bar check device that the non-return performance is good.

Technical solution of the present utility model is: a kind of pull bar check device, substantially be to socket-connect by outer tube and interior pipe to form, it is characterized in that: its upper end is housed in interior pipe and be located at that pushing hands outside the inner tubal wall is joined, the lower end passes the connecting rod that awl post that the spring shelves, pressure spring and the bottom that are fixed on the inner tubal wall be provided with boss joins, conical surface corresponding section with awl post bottom on inner tubal wall is provided with through hole, and steel ball is housed in the through hole.

For pipe in preventing is pulled out from outer tube, on the outer tube wall of interior pipe bottom, back-up ring is housed, outer tube upper end inwall is processed with up-thin-low-thick tip mouth, is just blocked by the tip mouth of outer tube upper end when the back-up ring on the interior pipe is pulled to the outer tube upper end like this, and at this moment interior pipe also just can not outwards spur again.

Described interior pipe bottom is provided with the through hole that steel ball is housed in it and can be 1 or two, and preferably the angle between two adjacent holes is three through holes about 120 degree, can improve its non-return effect like this, prevents to skid.

The utility model compares with existing pull bar check device that to have a non-return effective, and it is highly convenient to adjust, and saves time, laborsaving, when adjusting upward, only need pipe in the pulling, when adjusting downwards pushing hands upwards one is pushed away and interior pipe can be bounced back downwards, only can finish up or down and adjust with a hand, can be widely used in Infusion support, floor lamp, music easel, flooring fan, Mike's support, tripod etc. need to adjust on the facility of height.

Accompanying drawing is the utility model embodiment's a schematic representation.

Below in conjunction with description of drawings embodiment:

Outer tube 1 and interior pipe 2 adopt seamless steel pipe to process, outer tube 1 upper end inwall is processed into up-thin-low-thick tip mouth, in the pipe on interior pipe 2 tops traveller 6 is housed, traveller 6 radially is equipped with by screw 3 connections and the outer pushing hands 4 of pipe 2 walls in being located at, pipe 2 wall relevant positions are processed with rectangular through hole in it, connecting rod 5 is connected with traveller 6 axial bores by nut 19 packing rings 13 and nut 14, connecting rod 5 bottoms are passed by straight pin 15 and are fixed on interior spring shelves 7 and spring 8 of managing on 2 inwalls, by nut 16, packing ring 17, nut 18 is connected with the awl post 9 that the lower end is provided with boss, in the conical surface of awl post 9 bottoms is corresponding, be processed with three through holes 11 that steel ball 10 is housed in it on pipe 2 walls, the angle of per two adjacent through holes 11 is 120 degree, on interior pipe 2 walls on spring shelves 7 tops back-up ring 12 is housed.

Claims

1, a kind of pull bar check device, substantially be to socket-connect by outer tube [1] and interior pipe [2] to form, it is characterized in that: its upper end is housed in interior pipe [2] and be located at that pushing hands [4] interior pipe [2] wall outside is joined, the lower end passes the connecting rod [5] that awl post [9] that the spring shelves [7], pressure spring [8] and the bottom that are fixed on interior pipe [2] wall be provided with boss joins, conical surface corresponding section with awl post [9] bottom on interior pipe [2] wall is provided with through hole [11], and steel ball [10] is housed in the through hole [11].

2, a kind of pull bar check device according to claim 1 is characterized in that: ring washer ［ 12 ］ is housed on the outer tube wall of interior pipe ［ 2 ］ bottom, and outer tube ［ 1 ］ upper end inwall is processed with up-thin-low-thick tip mouth.

3, a kind of pull bar check device according to claim 2 is characterized in that: to be provided with the through hole ［ 11 ］ that steel ball ［ 10 ］ are housed in it be that angle between two adjacent holes all is three through holes ［ 11 ］ of 120 degree in pipe ［ 2 ］ bottom in described.