WO2020258470A1

WO2020258470A1 - Chair

Info

Publication number: WO2020258470A1
Application number: PCT/CN2019/101502
Authority: WO
Inventors: 陶国慧
Original assignee: 陶国慧
Priority date: 2019-06-28
Filing date: 2019-08-20
Publication date: 2020-12-30
Also published as: CN110269422A

Abstract

Provided is a chair, comprising a lifting and lowering rod (1), a seat cushion (2), a backrest cushion (3), and a connection base (6), and having the features: at least three foot support rods (5) are mounted on the outer periphery of the connection base (6) at the lower end of the lifting and lowering rod (1), the foot support rod (5) comprising a horizontal support part (7) and a connecting part (8), the connecting part (8) being fixedly connected to the outer periphery of the connection base (6) at the lower end of the lifting and lowering rod (1); a backrest support rod is connected between the backrest cushion (3) and the rear side of the connection base (6) at the upper end of the lifting and lowering rod (1); platform support rods are arranged on the left and/or right side of the connection base (6) at the upper end of the lifting and lowering rod (1), and a platform (4) is arranged on the platform support rod. The lifting and lowering rod (1) of the chair can adjust the height of the whole chair; the backrest cushion (3) and the rear side of the connection base (6) at the upper end of the lifting and lowering rod (1) are connected using an extendable and shortenable backrest support rod; also provided is a platform support rod which can be extended and shortened; an upper overhang rod (18) of the platform support rod is equipped with a platform for writing, object placement, and so on; the height of the backrest cushion (3) and the platform (4) can be adjusted at will, thus satisfying the usage requirements of different customers and improving the comfort of use.

Description

A kind of chair

Technical field

The invention belongs to the technical field of furniture, and particularly relates to a chair.

Background technique

The chair is very practical and will appear in every room. Its main function is to facilitate people to rest, so its comfort is the main criterion for judging the quality of a chair.

At present, chairs are generally equipped with structures such as lifting rods, which can adjust the overall height of the chair and rotate the seat cushion of the chair, but other parts, such as the backrest cushion, cannot be adjusted in height and cannot meet the needs of different customers. And chairs usually have casters and non-casters. If the customer buys a chair with casters, it cannot be used in a room with wooden floors. The casters will damage the wooden floor. Although the casters can be removed, the chair after removing the casters The bottom feet can also damage the wooden floor. If the customer buys a chair without casters, the sliding function of the chair cannot be satisfied.

Summary of the invention

The purpose of the present invention is to provide a chair in view of the above-mentioned shortcomings of the prior art.

The technical solution adopted by the present invention is: a chair, including a lifting rod, a seat cushion and a backrest cushion, the lifting rod is a pneumatic lifting rod or a hydraulic lifting rod, the upper and lower ends of the lifting rod are respectively installed with connecting seats, so At least three foot support rods are uniformly installed on the outer circumference of the connecting seat at the lower end of the lifting rod. The foot support rod includes a horizontal support part and a connecting part connected to each other. The connecting part is fixedly connected to the outer circumference of the connecting seat at the lower end of the lifting rod. , The outer end of the horizontal support part is sleeved with a foot cover; the backrest pad and the rear side of the connecting seat at the upper end of the lifting rod are connected with a number of stretchable and shortened backrest support rods; the upper end of the lifting rod The left side and/or right side of the connecting seat are provided with extendable and shortened platform struts, and a platform is provided on the platform struts.

The backrest support rod is bent to form a supporting part one and a vertical rod one, the vertical rod one can be extended and contracted, and the bottom end of the supporting part one is fixed to the rear side of the connecting seat at the upper end of the lifting rod connection.

The platform support rod is bent to form a supporting part two, a vertical rod two and a cantilever rod, the vertical rod two can be contracted and extended, a platform is installed at the outer end of the cantilever rod, and the supporting part The bottom ends of the two are fixedly connected with the connecting seat at the upper end of the lifting rod.

The cushion is installed on the upper end surfaces of the first and second supporting parts.

It also includes a universal caster and a rubber pad, and the universal caster or rubber pad is inserted into the lower end of the foot cover.

The first pole includes a lower pole body and an upper pole body. The lower pole body is provided with an axial sliding cavity. The upper pole body is inserted into the sliding cavity and can move up and down in the sliding cavity. The upper end of the lower pole body is provided There is a screw hole communicating with the sliding cavity, and a limit bolt is screwed in the screw hole.

The first pole includes a lower pole body and an upper pole body, the lower pole body is provided with an axial sliding cavity, and the upper pole body is inserted into the sliding cavity and can move up and down in the sliding cavity; the lower pole body and the upper pole body A limit device is arranged on the upper body, the limit device includes a limit sleeve and a tightening cap, and the limit sleeve includes a base portion fixedly installed on the upper end of the lower rod body and a cone sleeved on the upper rod body and clearance fit with the upper rod body The conical limit part is provided with an axial opening groove body, the conical limit part is provided with an external thread, and the tightening cap is sleeved on the upper rod and tightened The cap is provided with a tapered screw hole matched with the tapered limiting portion, and the tightening cap is screwed on the tapered limiting portion.

The second vertical rod includes a lower rod body and an upper rod body. The lower rod body is provided with an axial sliding cavity. The upper rod body is inserted into the sliding cavity and can move up and down in the sliding cavity. The upper end of the lower rod body is provided There is a screw hole communicating with the sliding cavity, and a limit bolt is screwed in the screw hole.

The second vertical rod includes a lower rod body and an upper rod body. The lower rod body is provided with an axial sliding cavity, and the upper rod body is inserted into the sliding cavity and can move up and down in the sliding cavity; the lower rod body and the upper rod body A limit device is arranged on the upper body, the limit device includes a limit sleeve and a tightening cap, and the limit sleeve includes a base portion fixedly installed on the upper end of the lower rod body and a cone sleeved on the upper rod body and clearance fit with the upper rod body The conical limit part is provided with an axial opening groove body, the conical limit part is provided with an external thread, and the tightening cap is sleeved on the upper rod and tightened The cap is provided with a tapered screw hole matched with the tapered limiting portion, and the tightening cap is screwed on the tapered limiting portion.

The second vertical rod includes a lower rod body and an upper rod body, the lower rod body is provided with an axial connecting screw hole, the upper rod body is provided with an external thread, and the upper rod body is screwed into the connecting screw hole of the lower rod body.

The second vertical rod includes a lower rod body and an upper rod body, the bottom of the upper rod body is provided with a rotating shaft, the inside of the lower rod body is provided with a gas rod, and the piston rod of the gas rod is connected with the bottom of the rotating shaft; the upper rod body A switch control rod matched with the valve switch at the upper end of the piston rod is arranged on the upper part.

The outer end of the foot cover is connected with a column, and the column is provided with a foot pedal and a foot ball.

After adopting the above structure, the advantages of the present invention compared with the prior art are: the lifting rod of the present invention can adjust the height of the whole chair, and the connection between the backrest cushion and the rear side of the connecting seat at the upper end of the lifting rod can be extended and The shortened backrest support rod is also provided with an extendable and shortened platform support rod. The upper cantilever rod of the platform support rod is equipped with a platform for writing and storage. The height of the backrest pad and the platform can be adjusted at will to meet To meet the needs of different customers, and to improve the comfort of use; the foot cover of the horizontal support part of the foot support bar can be plugged with universal casters or rubber pads, and the wooden floor will not be damaged when the rubber pads are used. Use universal casters Can make the chair slide freely, use more freely.

Description of the drawings

Fig. 1 is a schematic structural diagram of Embodiment 1 of the present invention.

Fig. 2 is a schematic structural diagram of Embodiment 1 of the present invention.

Fig. 3 is a schematic structural diagram of Embodiment 2 of the present invention.

Figure 4 is a schematic structural diagram of Embodiment 2 of the present invention.

Fig. 5 is a schematic structural diagram of Embodiment 3 of the present invention.

Fig. 6 is a schematic structural diagram of Embodiment 3 of the present invention.

Fig. 7 is a schematic diagram of the structure of the upper rod body and the lower rod body according to the present invention.

Fig. 8 is a schematic diagram of the structure of the upper rod body, the lower rod body and the stop bolts of the present invention.

Fig. 9 is an enlarged view of A in Fig. 5.

Fig. 10 is a schematic diagram of the structure of the upper rod body, the lower rod body and the limiting device according to the present invention.

Fig. 11 is a schematic structural diagram of Embodiment 4 of the present invention.

Fig. 12 is a schematic view of the structure of the upper rod and the lower rod according to the fourth embodiment of the present invention.

Detailed ways

The following descriptions are only preferred embodiments of the present invention and do not limit the protection scope of the present invention. The present invention will be further described below with reference to the accompanying drawings and embodiments.

Embodiment 1, as shown in Figures 1, 2, 7, and 8: a chair including a lifting rod 1, a seat cushion 2, a backrest cushion 3, a platform 4, a foot support rod 5, a backrest support rod and a platform support rod, so The upper and lower ends of the lifting rod 1 are respectively installed with a connecting seat 6, and a rotating shaft is connected between the lifting rod 1 and the connecting seat 6 at the upper end. The lifting rod 1 is a pneumatic lifting rod or a hydraulic lifting rod in the prior art. A lift valve switch (not shown in the drawing) is also connected, so that the upper connecting seat 6 can be lifted and rotated.

specific,

There are at least three foot support rods 5, which are evenly installed on the outer periphery of the connecting seat 6 at the lower end of the lifting rod 1. The foot support rod 5 is formed by bending a pipe and is formed with a horizontal support portion 7 and a connecting portion 8. A groove is provided on the outer periphery of the connecting seat 6 at the lower end of the lifting rod 1, and the connecting part 8 is installed in the groove, and the connecting part 8 is penetrated by a bolt and then screwed into the groove, thereby fixing the foot support rod 5 to On the connecting seat 6 at the lower end of the lifting rod 1. The outer end of the horizontal support part 7 is sleeved with a foot sleeve 10, and the lower end of the foot sleeve 10 is inserted with a universal caster 9 or a rubber pad 24, wherein the lower end of the foot sleeve 10 is provided with an insertion hole, the The upper ends of the universal caster 9 and the rubber pad 24 are connected with a plug post. The universal caster 9 (see Figure 1) or the rubber pad 24 (see Figure 2) can be plugged into the detachable foot cover 10 through the plug post. In the insertion hole, the customer can replace the universal caster 9 or the rubber pad 24 at will to meet the needs of use. A column 25 is connected to the outer end of one of the foot covers 10, and the column is provided with a foot pedal 26 and a foot ball 27 for the user to step on.

There are at least two backrest struts. The backrest struts are bent to form a supporting part 11 and a vertical rod 12. The supporting part 11 can be horizontal or inclined, and the vertical rod 12 can be contracted and extended. Long, the bottom end of the supporting portion 11 is fixedly connected to the rear side of the connecting seat 6 at the upper end of the lifting rod 1, and the connection method is the same as that of the foot support rod 5 and the connecting seat 6 at the lower end of the lifting rod 1. Wherein, the vertical rod 12 includes an upper rod body 13 and a lower rod body 14 integrally connected with the supporting portion 11, the lower rod body 14 is provided with an axial sliding cavity, and the upper rod body 13 is inserted into the sliding cavity and It can move up and down in the sliding cavity, so that the vertical rod 12 can be extended and shortened. The upper end of the lower rod body 14 is provided with a screw hole communicating with the sliding cavity, and a limit bolt 15 is screwed in the screw hole (see FIG. 8) Tighten the limit bolt 15 to tighten the upper rod 13 to fix the upper rod 13. The backrest pad 3 is installed on the upper end of the upper rod body 13. The pole 12 can be extended and shortened, so that the height of the back cushion 3 can be adjusted to meet different needs of customers.

Platform support rods. Both the left and right sides of the connecting seat 6 at the upper end of the lifting rod 1 are provided with platform support rods. The platform support rods are bent to form a supporting part 16, a vertical rod 17 and a cantilever. The two poles 17 can be extended and shortened. The platform 4 is installed at the outer end of the cantilever pole 18. The bottom ends of the two supporting parts 16 of the two platform poles are connected to the lifting pole 1 respectively. The left side and the right side of the upper connecting seat 6 are fixedly connected, wherein the second vertical rod 17 includes a lower rod body 14 integrally connected with the supporting part 16 and an upper rod body 13 integrally connected with the cantilever rod 18. The lower rod body 14 is provided with an axial connecting screw hole, the upper rod body 13 is provided with external threads (see FIG. 7), and the upper rod body 13 is screwed into the connecting screw hole of the lower rod body 14 by clockwise or counterclockwise By rotating the upper rod body 13 by the hour hand, the height of the second rod 17 can be adjusted, which is convenient for customers to use the platform 4.

The seat cushion 2 is installed on the upper end surfaces of the supporting part 11 and the supporting part 16 without using other installation structures, making the installation of the seat cushion 2 simple and convenient.

Embodiment 2, shown in Figures 3, 4, 8: a chair, the difference from embodiment 1 is that: the vertical pole 12 includes an upper pole body 13 and a lower pole body 14 integrally connected with the supporting part 11, The lower rod body 14 is provided with an axial sliding cavity, the upper rod body 13 is inserted into the sliding cavity and can move up and down in the sliding cavity, and the upper end of the lower rod body 14 is provided with a screw hole communicating with the sliding cavity, The limit bolt 15 is screwed into the screw hole (see FIG. 8), and the limit bolt 15 is tightened to tighten the upper rod body 13, thereby fixing the upper rod body 13. The backrest pad 3 is installed on the upper end of the upper rod body 13.

The second pole 17 includes a lower rod body 14 integrally connected with the supporting portion two 16 and an upper rod body 13 integrally connected with the cantilever rod 18, the lower rod body 14 is provided with an axial sliding cavity, and the upper rod body 13 is inserted It is connected in the sliding cavity and can move up and down in the sliding cavity. The upper end of the lower rod body 14 is provided with a screw hole communicating with the sliding cavity, and a limit bolt 15 (see FIG. 8) is screwed into the screw hole to tighten the limit. The positioning bolt 15 tightens the upper rod 13 to fix the upper rod 13. The backrest pad 3 is installed on the upper end of the upper rod body 13.

Embodiment 3, as shown in Figures 5, 6, 9, and 10: The vertical rod 12 includes an upper rod body 13 and a lower rod body 14 integrally connected with the supporting portion 11, and the lower rod body 14 is provided with an axial The upper rod body 13 is inserted into the sliding cavity and can move up and down in the sliding cavity; the lower rod body 14 and the upper rod body 13 are provided with a limiting device 19, the limiting device 19 includes a limiting sleeve and The tightening cap 20, the limit sleeve includes a base 21 fixedly installed on the upper end of the lower rod body 14 and a tapered limit part 22 sleeved on the upper rod body 13 and clearance fit with the upper rod body 13. The tapered limiter The position portion 22 is provided with an axial opening groove body 23, the tapered stop portion 22 is provided with an external thread, the tightening cap 20 is sleeved on the upper rod body 13, and the tightening cap 20 is provided with A tapered screw hole matched with the tapered limiting portion 22, and the tightening cap 20 is screwed on the tapered limiting portion 22. When the tightening cap 20 is rotated to make the tightening cap 20 approach the base portion 21, the tightening cap 20 will squeeze the conical limiting portion 22 so that it will hug the upper rod 13 and fix the upper rod 13; When adjusting the height of the vertical pole 12, reversely rotate the tightening cap 20, so that the tapered stop 22 loosens the upper pole 13 to move the upper pole 13 up or down to realize the extension and contraction of the pole 12 Features.

The second pole 17 includes a lower rod body 14 and an upper rod body 13. The lower rod body 14 is provided with an axial sliding cavity, and the upper rod body 13 is inserted into the sliding cavity and can move up and down in the sliding cavity; The lower rod body 14 and the upper rod body 13 are provided with a limiting device 19, the limiting device 19 includes a limiting sleeve and a tightening cap 20, and the limiting sleeve includes a base 21 fixedly installed on the upper end of the lower rod 14 and a sleeve A tapered limiting portion 22 on the upper rod 13 and clearance fit with the upper rod 13, the tapered limiting portion 22 is provided with an axial opening groove, and the tapered limiting portion 22 is provided with an outer The tightening cap 20 is sleeved on the upper rod body 13, and the tightening cap 20 is provided with a tapered screw hole matched with the tapered limit part 22, and the tightening cap 20 is screwed on the tapered limit Position 22 on. When the tightening cap 20 is rotated to make the tightening cap 20 approach the base portion 21, the tightening cap 20 will squeeze the conical limiting portion 22 so that it will hug the upper rod 13 and fix the upper rod 13; When adjusting the height of the vertical pole 12, reversely rotate the tightening cap 20, so that the tapered stop 22 loosens the upper pole 13 to move the upper pole 13 up or down to realize the extension and contraction of the pole two 17 Features.

Embodiment 4, shown in Figures 11 and 12: a chair. The difference from embodiment 1 is that the second pole 17 includes a lower pole body 14 and an upper pole body 13, and the bottom of the upper pole body 13 is provided with a rotating shaft 28 , The lower rod body 14 is provided with an air rod, and the piston rod 29 of the air rod is connected to the bottom of the rotating shaft 28; the upper rod body 13 is provided with a switch control rod 30 matching the valve switch at the upper end of the piston rod 29 . In this embodiment, the height of the upper rod body 13 can be adjusted by the switch control rod 30 to realize the extension and contraction functions of the second pole 17. The rotating shaft 28 enables the cantilever rod 18 and the platform 4 to rotate.

Claims

A chair includes a lifting rod, a seat cushion, and a back cushion. The lifting rod is a pneumatic lifting rod or a hydraulic lifting rod. The upper and lower ends of the lifting rod are respectively equipped with connecting seats, and the feature is that the lower end of the lifting rod At least three foot support rods are evenly installed on the outer circumference of the connecting seat. The foot support rod includes a horizontal support part and a connecting part connected to each other. The connecting part is fixedly connected to the outer circumference of the connecting seat at the lower end of the lifting rod. The horizontal support The outer end of the part is sleeved with a foot cover; the backrest pad and the rear side of the connecting seat at the upper end of the lifting rod are connected with a number of extendable and shortening backrest struts; the left side of the connecting seat at the upper end of the lifting rod Extendable and shortenable platform struts are arranged on the side and/or right side, and a platform is arranged on the platform struts.
The chair according to claim 1, wherein the backrest support rod is bent to form a supporting part and a vertical rod, the vertical rod 1 can be extended and contracted, and the supporting part The bottom end of one is fixedly connected with the rear side of the connecting seat at the upper end of the lifting rod.
A chair according to claim 1, characterized in that: the platform support rod is bent to form a supporting part two, a vertical rod two and a cantilever rod, the vertical rod two can be extended and contracted, so A platform is installed at the outer end of the cantilever rod, and the bottom end of the supporting part two is fixedly connected with the connecting seat at the upper end of the lifting rod.
A chair according to claim 1 or 2 or 3, wherein the cushion is installed on the upper end surfaces of the first supporting part and the second supporting part.
The chair according to claim 1, characterized in that it further comprises a universal caster and a rubber pad, and the universal caster or rubber pad is inserted into the lower end of the foot cover.
A chair according to claim 2, characterized in that: the first pole includes a lower pole body and an upper pole body, the lower pole body is provided with an axial sliding cavity, and the upper pole body is inserted into the sliding cavity and can be Moving up and down in the sliding cavity, the upper end of the lower rod body is provided with a screw hole communicating with the sliding cavity, and a limit bolt is screwed in the screw hole.
A chair according to claim 2, characterized in that: the first pole includes a lower pole body and an upper pole body, the lower pole body is provided with an axial sliding cavity, and the upper pole body is inserted into the sliding cavity and can be Move up and down in the sliding cavity; the lower rod body and the upper rod body are provided with a limiting device, the limiting device includes a limiting sleeve and a tightening cap, and the limiting sleeve includes a base portion fixedly installed on the upper end of the lower rod And a tapered limiting portion sleeved on the upper rod body and in clearance fit with the upper rod body, the tapered limiting portion is provided with an axial opening groove, and the tapered limiting portion is provided with an external thread, The tightening cap is sleeved on the upper rod body, and the tightening cap is provided with a tapered screw hole matched with the tapered limiting portion, and the tightening cap is screwed on the tapered limiting portion.
A chair according to claim 3, characterized in that: the second vertical rod includes a lower rod body and an upper rod body, the lower rod body is provided with an axial sliding cavity, and the upper rod body is inserted into the sliding cavity and can be Moving up and down in the sliding cavity, the upper end of the lower rod body is provided with a screw hole communicating with the sliding cavity, and a limit bolt is screwed in the screw hole.
A chair according to claim 3, characterized in that: the second vertical rod includes a lower rod body and an upper rod body, the lower rod body is provided with an axial sliding cavity, and the upper rod body is inserted into the sliding cavity and can be Move up and down in the sliding cavity; the lower rod body and the upper rod body are provided with a limiting device, the limiting device includes a limiting sleeve and a tightening cap, and the limiting sleeve includes a base portion fixedly installed on the upper end of the lower rod And a tapered limiting portion sleeved on the upper rod body and in clearance fit with the upper rod body, the tapered limiting portion is provided with an axial opening groove, and the tapered limiting portion is provided with an external thread, The tightening cap is sleeved on the upper rod body, and the tightening cap is provided with a tapered screw hole matched with the tapered limiting portion, and the tightening cap is screwed on the tapered limiting portion.
A chair according to claim 3, characterized in that: the second upright rod includes a lower rod body and an upper rod body, the lower rod body is provided with an axial connecting screw hole, and the upper rod body is provided with an external thread , The upper rod body is screwed into the connecting screw hole of the lower rod body.
The chair according to claim 3, characterized in that: the second vertical rod includes a lower rod body and an upper rod body, the bottom of the upper rod body is provided with a rotating shaft, the inside of the lower rod body is provided with an air rod, and the The piston rod of the air rod is connected with the bottom of the rotating shaft; the upper rod body is provided with a switch control rod matched with the valve switch at the upper end of the piston rod.
The chair according to claim 5, wherein the outer end of the foot cover is connected with a column, and the column is provided with a foot pedal and a pedal ball.