CN209950808U

CN209950808U - Improved structure for lifting handrail

Info

Publication number: CN209950808U
Application number: CN201822040527.3U
Authority: CN
Inventors: 陈羿儒
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-12-06
Filing date: 2018-12-06
Publication date: 2020-01-17
Anticipated expiration: 2028-12-06

Abstract

The utility model discloses an improved structure for lifting handrails, which comprises a handrail frame, a telescopic sleeve and a pressing piece, wherein the handrail frame is provided with a fixed seat fixed at the bottom of a chair seat and a hollow vertical pipe, the upper half part of the outer side of the hollow vertical pipe is provided with a strip-shaped positioning groove, the telescopic sleeve is sleeved on the hollow vertical pipe, the outer end surface of the telescopic sleeve is concavely provided with a containing groove, the middle of the containing groove is convexly provided with a hole seat, the pressing piece comprises a button, a resisting block and an elastic piece, the button is a sleeve body of the containing groove, the resisting block is arranged in the button, the resisting block is provided with a latch corresponding to the hole seat towards the outer end part of the containing groove, the elastic piece is sleeved between the resisting block and the containing groove, so that the resisting block and the button have elastic force of outward supporting under normal state; after the upper end of the pressing piece is stressed and pressed, the up-and-down height of the telescopic sleeve can be adjusted, so that the purpose of lifting the handrail is achieved.

Description

Improved structure for lifting handrail

Technical Field

The utility model relates to a technical field of official working seat handrail, in particular to improvement structure that handrail goes up and down.

Background

As is well known, some office chairs are not provided with armrests, some office chairs are provided with armrests, most of office chairs with the armrests are fixed-height armrests, but the fixed-height armrests can only be suitable for people with specific heights, so that people with different heights use the fixed-height armrests and sometimes the fixed-height armrests are too high or too low. Therefore, the height-adjustable armrest can be suitable for more people to use.

Although some office chair's handrail is adjustable now, like the novel patent of taiwan's novel patent application number 091221129 that can the height adjustment of office chair handrail ' but the structure of shaking is stopped, the card post is established to the central authorities of its pressing member, through two elastomers of card post upper and lower position department, makes the pressing member elastically flexible, but the pressing force point of this design will be in the centre, just can not make the pressing member produce the uneven not smooth phenomenon of upper and lower application of force, this kind of not smooth phenomenon produces the problem of jamming easily, and then influences the regulation of whole handrail.

Therefore, in view of the above problems, how to develop an innovative structure with more ideal practicability to meet the purchase demand of consumers is also an objective and direction for related manufacturers to make efforts to research and develop and seek breakthrough.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the not enough of prior art, provide an improvement structure that handrail goes up and down.

In order to achieve the above purpose, the utility model adopts the following technical scheme: an improved structure for lifting armrests comprises

The armrest frame is provided with a fixed seat fixed at the bottom of the seat and a hollow vertical pipe, the upper half part of the outer side of the hollow vertical pipe is provided with a strip-shaped positioning groove, and tooth sockets which are arranged oppositely are arranged at two sides of the positioning groove;

the telescopic sleeve is sleeved on the hollow vertical pipe, a horizontal part is arranged at the top end of the telescopic sleeve, a handrail pad is arranged on the horizontal part, an accommodating groove is concavely arranged on the outer end face of the telescopic sleeve, a hole seat convexly extends in the middle of the accommodating groove, and the upper end and the lower end of the accommodating groove are provided with cutting holes;

the pressing piece comprises a button, a supporting block and an elastic piece, the button is a sleeve body of the containing groove, the supporting block is arranged in the button, a clamping tooth corresponding to the hole seat is arranged on the outer end portion, facing the containing groove, of the supporting block, a gap slightly larger than the thickness of the positioning groove is arranged in the clamping tooth, a convex column is arranged in a seat body opposite to one end of the clamping tooth, the elastic piece is sleeved on the convex column, and the open end of the elastic piece is abutted to the upper portion of the hole seat, so that the supporting block and the button have elastic force which is outwards stretched out under a normal state.

Further, a longitudinal groove is formed in an outer side surface of the hollow vertical pipe, and the positioning groove is located in the longitudinal groove.

Further, the hollow vertical pipe is provided with at least two transverse grooves, the transverse grooves are sleeved with lantern rings which are opposite to the transverse grooves, and the lantern rings slightly protrude out of the surface of the hollow vertical pipe.

Stated further, the containing groove and the pressing piece are both rectangular.

Further, a recess is disposed above the hole seat, the open end of the elastic member abuts against the recess, and the recess positions the open end of the elastic member.

Further elaborating, the upper end and the lower end of the button are both provided with elastic barbs, and the elastic barbs are directionally buckled into the split holes of the containing grooves.

Further elaborating, the hole seat and the latch are both in a cross shape.

The beneficial effects of the utility model reside in that: the utility model discloses an industry is first seen, accords with the novelty requirement of utility model patent, and its comprehensive innovation structural design also has certain progressive nature, and this kind of handrail elevation structure's adjustment structure and location structure are simple and practical, easily make, equipment and use, have the industry application of preferred.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a perspective exploded view of the present invention.

Fig. 3 is a schematic sectional view of the assembly of the present invention.

Fig. 4 is a schematic perspective sectional view of the present invention.

Fig. 5 is a schematic diagram of the operation of the combined section according to the present invention.

Fig. 6 is a schematic action diagram of a three-dimensional cross section according to the present invention.

Fig. 7 is a schematic view of the lifting operation of the office chair according to the present invention.

Fig. 8 is a perspective exploded view of a conventional armrest.

Reference numerals: 10. a handrail frame; 11. a fixed seat; 12. a hollow riser; 121. positioning a groove; 122. a tooth socket; 123. a longitudinal groove; 124. a lateral trench; 13. a collar; 20. a telescopic sleeve; 21. a horizontal portion; 22. a containing groove; 221. a hole seat; 222. cutting a hole; 223. a pocket; 30. a pressing member; 31. a button; 311. elastic barbs; 32. a resisting block; 321. clamping teeth; 322. a notch; 323. a base body; 324. a convex column; 33. an elastic member; 40. a chair seat; 50. an armrest pad.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, the present invention provides a handrail lifting structure, which comprises

The handrail frame 10 is provided with a fixed seat 11 fixed at the bottom of the seat 40 and a hollow vertical pipe 12, the upper half part of the outer side of the hollow vertical pipe 12 is provided with a strip-shaped positioning groove 121, tooth grooves 122 oppositely arranged are arranged at two sides of the positioning groove 121, a longitudinal groove 123 is arranged at one outer side surface of the hollow vertical pipe 12, the positioning groove 121 is positioned in the longitudinal groove 123, the hollow vertical pipe 12 is provided with at least two transverse grooves 124, the transverse grooves 124 are sleeved with lantern rings 23 oppositely arranged with the transverse grooves, the lantern rings 23 slightly protrude out of the surface of the hollow vertical pipe 12, and resistance exists between the lantern rings 23 and the inner wall of the telescopic sleeve 20, so that the antiskid effect is achieved;

a telescopic tube 20, the telescopic tube 20 is sleeved on the hollow vertical tube 12, the top end of the telescopic tube 20 is provided with a horizontal part 21, the horizontal part 21 is provided with a handrail pad 50 (as shown in fig. 7), the outer end surface of the telescopic tube 20 is concavely provided with a rectangular containing groove 22, the middle of the containing groove 22 is convexly provided with a cross-shaped hole seat 221, the upper end and the lower end of the containing groove 22 are both provided with a sectional hole 222, and a recess 223 is arranged above the hole seat 221;

a pressing piece 30, the pressing piece 30 includes a button 31, a resisting block 32 and an elastic piece 33, the button 31 is a rectangular sleeve body of the containing groove 22 of the telescopic sleeve 20, the upper and lower ends of the button 31 are both provided with elastic barbs 311, the elastic barbs 311 are buckled into the sectional holes 222 of the containing groove 22 of the telescopic sleeve 20 in a directional way, the resisting block 32 is arranged in the button 31, the resisting block 32 is provided with a cross-shaped latch 321 corresponding to the hole seat 221 at the outer end part facing the containing groove 22, the latch 321 can just extend into the hole seat 221 of the containing groove 22 of the telescopic sleeve 20 and is meshed with the positioning groove 121 of the armrest frame 10 after extending into, a gap 322 slightly larger than the thickness of the positioning groove 121 of the hollow vertical tube 12 is arranged in the latch 321, a convex column 324 is arranged in the seat body 323 of the resisting block 32 at one end opposite to the latch 321, the elastic piece 33 is sleeved on the convex column 324, the open end of the elastic piece 33 is abutted against the concave cavity 223 above the hole seat 221, the concave cavity 223 is used for positioning the open, the elastic member 33 makes the abutting block 32 and the button 31 have an outward-extending elastic force in a normal state.

Referring to fig. 3 and 4, fig. 3 and 4 are sectional views of the telescopic tube 20, the pressing member 30 is accommodated in the accommodating groove 22. The elastic barbs 311 at the upper and lower ends of the button 31 are engaged with the cut holes 222 of the receiving groove 22 of the telescopic tube 20, and at the same time, the cross-shaped latches 321 of the abutting block 32 in the button 31 are just located in the positioning grooves 121 of the armrest frame 10, so as to form an engaged state, the upper end of the abutting block 32 in the button 31 is simultaneously subjected to the outward supporting elastic force of the elastic member 33, when the pressing member 30 is pressed by a force, the elastic member 33 is compressed, and the elastic member 33 pushes the cross-shaped latches 321 of the abutting block 32 out of the positioning grooves 121 of the armrest frame 10, so that the notches 322 inside the latches 321 are aligned with the positioning grooves 121 of the armrest frame 10, and at this time, since the cross-shaped latches 321 are not engaged with the positioning grooves 121 for limiting, the height adjustment can be performed by lifting the telescopic tube 20 on the hollow upright tube 12 (see fig. 5 to 7). When the telescopic tube 20 is adjusted to a proper height, the pressing piece 30 is released, the elastic piece 33 elastically resets, so that the cross-shaped latch 321 of the abutting block 32 is meshed with the positioning groove 121 for limiting, and the abutting block 32 of the pressing piece 30 is only subjected to the elastic force of the elastic piece 33 at the upper end, so that uneven force application phenomenon cannot occur during secondary pressing adjustment.

The foregoing is a preferred embodiment specifically explaining the technical features of the present invention, and the above description is not intended to limit the technical scope of the present invention, and all modifications, equivalent changes and modifications made to the above embodiments by the technical spirit of the present invention all still belong to the scope of the technical solution of the present invention.

Claims

1. An improvement structure that handrail goes up and down which characterized in that: comprises that

2. The improved structure of handrail lifting of claim 1, wherein: a longitudinal groove is formed in one outer side face of the hollow vertical pipe, and the positioning groove is located in the longitudinal groove.

3. The improved structure of handrail lifting of claim 1, wherein: the hollow vertical pipe is provided with at least two transverse grooves, the transverse grooves are sleeved with lantern rings which are opposite to the transverse grooves, and the lantern rings slightly protrude out of the surface of the hollow vertical pipe.

4. The improved structure of handrail lifting of claim 1, wherein: the containing groove and the pressing piece are both rectangular.

5. The improved structure of handrail lifting of claim 1, wherein: a recess is arranged above the hole seat, the open end of the elastic piece is abutted against the recess, and the recess positions the open end of the elastic piece.

6. The improved structure of handrail lifting of claim 1, wherein: elastic barbs are arranged at the upper end and the lower end of the button, and the elastic barbs are buckled into the split holes of the accommodating grooves in a directional mode.

7. The improved structure of handrail lifting of claim 1, wherein: the hole seat and the clamping teeth are in a cross shape.