CN115153238A

CN115153238A - Chair back tilting support structure

Info

Publication number: CN115153238A
Application number: CN202110360535.XA
Authority: CN
Inventors: 吴玉玲; 阿明·罗兰·桑德; 马佐·卢卡
Original assignee: Comfordy Co Ltd
Current assignee: Comfordy Co Ltd
Priority date: 2021-04-02
Filing date: 2021-04-02
Publication date: 2022-10-11

Abstract

The invention relates to a chair back tilting support structure, which is mainly characterized in that a rotary connecting part which is pivoted with each other is arranged between a chair back main body and the upper end of a chair back support, and the lower end of the chair back main body is connected with the chair back support through a swing arm, so that when a user lies and leans against the chair back main body and tilts backwards, the chair back main body takes the upper end pivot joint of the chair back support as a rotating point, so that the chair back main body forms a tilting angle, the proper tilting angle can be kept for the chair back main body by utilizing the traction limit of the swing arm between the lower end of the chair back main body and the chair back support, so that the user can safely lie and lean against the chair back main body, and in addition, the elastic sections arranged on the two side rod parts of the chair back main body can ensure that the chair back main body is closely supported on the back of the user when the user lies and leans against the chair back main body, so as to facilitate the riding comfort.

Description

Chair back tilting support structure

Technical Field

The present invention relates to a chair back support structure, and more particularly, to a chair back structure that can facilitate the adjustment of a chair back to a desired tilt angle and fit to the waist and back of a user for comfort.

Background

At present, chairs are necessary for daily life of people, when people sit on the chairs, the back of people often leans against the chair back, however, the basic angle of the existing chair back is not changed, so that the back of a user cannot be supported by lying on the back.

However, for users who need to sit on the chair for a long time to do work, the chair is required to be used not only for basic sitting and leaning, but also for lying on their back, so that the user can adjust the chair back to a desired tilting angle when working is tired, and then lie on the back for rest, so that the angle adjustment of the chair back is a necessary function. Furthermore, most of the existing chair backs are hard back plates and lack elasticity, so that when a user leans against the chair back, the back of the user is not easy to be painful and uncomfortable, and the back of the user is difficult to stick to the chair back, so that the phenomenon of waist soreness and back pain is easy to occur after the user sits down for a long time.

Therefore, in view of the above-mentioned shortcomings of the prior chair back structure, the present inventors have made various researches and developments with the aid of manufacturing and design experiences and knowledge in the related art for many years.

Disclosure of Invention

The invention relates to a chair back tilting support structure, and mainly aims to provide a chair back structure which can conveniently adjust a chair back to a required tilting angle and can be attached to the waist and back of a user so as to be convenient for riding.

To achieve the above-mentioned objectives, the present inventors have studied a chair back reclining supporting structure, comprising:

the chair back support is provided with a first rotary connecting part at the upper end, and a first pivot part is arranged below the first rotary connecting part and is pivoted with one end of a swing arm;

a chair back main body, including two first rod parts which are vertically arranged relatively at left and right, and a second rod part and a third rod part which are horizontally arranged relatively at upper and lower parts, and two ends of the second rod part and two ends of the third rod part are respectively connected with the two first rod parts, a hollow area is formed by enclosing the two first rod parts, the second rod part and the third rod part together, a fourth rod part is horizontally arranged between the hollow areas, two ends of the fourth rod part are respectively connected with the two first rod parts, at least one second rotary part is arranged on the fourth rod part, a rotary joint is arranged by penetrating through a rotary shaft with the first rotary part on at least one chair back support, at least one second pivot part is arranged on the third rod part, a rotary joint is arranged by penetrating through a rotary shaft with the other end of the swing arm on at least one chair back support, the rotary shaft is arranged by penetrating through the first rotary part and the second rotary part, a rotary joint is arranged in a direction with the first pivot part and one end of the swing arm, the rotary joint is arranged by penetrating through the rotary shaft with the second rod part and the other end of the second pivot part, and the second pivot part is arranged between the first rotary joint and the second pivot part, and the second pivot part are arranged in a position between the first pivot part and the first pivot part.

In the chair back tilting support structure, the two first rod portions of the chair back main body are respectively formed with a downward inclined section gradually inclined from the upper edge thereof and an upward inclined section gradually inclined from the lower edge thereof, and the downward inclined section and the upward inclined section are connected by the elastic section.

The backrest leaning and leaning support structure as mentioned above, wherein the elastic section of the first rod part of the backrest main body is formed with a plurality of grooves along the length direction.

The backrest leaning and leaning support structure comprises two backrest supports, wherein the upper ends of the two backrest supports are respectively provided with a first rotary connection part, the two backrest supports are respectively provided with a first pivot part below the first rotary connection part so as to be respectively pivoted with one end of a swing arm, the fourth rod part of the backrest main body is provided with two second rotary connection parts so as to be respectively pivoted with the first rotary connection parts of the two backrest supports through a rotary shaft, and the third rod part is provided with two second pivot parts so as to be respectively pivoted with the other ends of the two swing arms pivoted with the two backrest supports through a rotary shaft.

Therefore, when a user lies and leans against the chair back main body and leans backwards, the chair back main body can take the pivot joint position at the upper end of the chair back support as a rotating point, so that the chair back main body forms a leaning and leaning angle, the proper leaning and leaning angle of the chair back main body can be kept by utilizing the traction limit of the swing arm between the lower end of the chair back main body and the chair back support, the user can safely lie and lean against the chair back main body, and in addition, the elastic sections arranged on the two side rod parts of the chair back main body can ensure that the chair back main body is closely supported on the waist and the back of the user when the user lies and leans against the chair back main body, so that the sitting comfort is facilitated.

Drawings

The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, the proportional sizes, and the like of the respective members in the drawings are merely schematic for facilitating the understanding of the present invention, and do not specifically limit the shapes, the proportional sizes, and the like of the respective members of the present invention. Those skilled in the art, having the benefit of the teachings of this invention, may effect this invention by selecting various possible shapes and proportional dimensions as appropriate.

FIG. 1 is an exploded perspective view of the present invention;

FIG. 2 is a perspective view of the present invention;

FIG. 3 is a use state diagram of the present invention;

FIG. 4 is a diagram of the second embodiment of the present invention;

fig. 5 is a use state diagram (iii) of the present invention.

Description of reference numerals:

1: the chair back bracket 11: first rotary joint part

12: first pivot portion 13: swing arm

14: rotating shaft 15: pivot shaft

2: the seatback main body 21: first rod part

211: declined section 212: upward inclined section

213: the elastic section 214: cutting groove

22: second rod portion 23: third rod part

231: second pivot portion 24: hollow out section

25: the fourth lever portion 251: second rotary joint part

3: chair set

Detailed Description

The details of the present invention can be more clearly understood in conjunction with the accompanying drawings and the description of the embodiments of the present invention. However, the specific embodiments of the present invention described herein are for the purpose of illustration only and are not to be construed as limiting the invention in any way. Any possible variations based on the present invention may be conceived by the skilled person in the light of the teachings of the present invention, and these should be considered to fall within the scope of the present invention.

It will be understood that when an element is referred to as being "secured to" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present.

So that the technical means and effects achieved by the present invention can be more completely and clearly disclosed, the following detailed description should be read with reference to the accompanying drawings and the reference numerals:

first, please refer to fig. 1, which illustrates a chair back tilting support structure of the present invention, mainly comprising:

the chair back support 1 is provided with two chair back supports 1 which are opposite to each other at the left and the right, the upper end of the chair back support 1 is provided with a first rotary connection part 11, a first pivot part 12 is arranged at a proper position below the first rotary connection part 11 of the chair back support 1, and the first pivot part 12 is pivoted with one end of a swing arm 13;

a chair back main body 2, which comprises two first rod parts 21 which are vertically arranged on the left and right oppositely, and a second rod part 22 and a third rod part 23 which are horizontally arranged on the upper and lower oppositely, and two ends of the second rod part 22 and the third rod part 23 are respectively connected with the two first rod parts 21, a hollow area 24 is formed by enclosing the two first rod parts 21, the second rod part 22 and the third rod part 23, a fourth rod part 25 is horizontally arranged between the hollow areas 24, two ends of the fourth rod part 25 are respectively connected with the two first rod parts 21, in addition, at least one second rotary connecting part 251 is arranged on the fourth rod part 25, the invention is provided with two second rotary connecting parts 251 which are opposite on the left and right on the fourth rod part 25, so as to respectively and rotatably connect with the first rotary connecting parts 11 of the chair back support 1 by a rotating shaft 14, and at least one second pivot part 231 is arranged on the third rod part 23, the present invention is to provide two second pivot portions 231 opposite to each other on the left and right on the third rod portion 23, so as to respectively pivot with the other ends of two swing arms 13 pivoted with two chair back brackets 1 through a pivot 15, and the pivot 14 is pivoted with the first pivot portion 11 and the second pivot portion 251 through a pivot direction, pivoted with the first pivot portion 12 and one end of the swing arm 13, and the pivot 15 is pivoted with the second pivot portion 231 and the other end of the swing arm 13 through a pivot direction in the same direction, and in addition, two first rod portions 21 are respectively formed with a downward inclined section 211 inclined downward from the upper edge thereof and an upward inclined section 212 inclined upward from the lower edge thereof, and the downward inclined section 211 is connected with the upward inclined section 212 through an elastic section 213, and the elastic section 213 is set up in an arc projection, and the elastic section 213 of two first rod portions 21 is located between the third rod portion 23 and the third rod portion 25, and a plurality of grooves 214 are formed on the elastic section 213 along the length thereof, to create flexibility by the plurality of grooves 214.

Accordingly, when the assembly is performed, please refer to fig. 2, the backrest main body 2 is positioned in front of the backrest frame 1, and the second rotation parts 251 disposed on the fourth rod part 25 of the backrest main body 2 are respectively pivoted with the first rotation parts 11 disposed at the upper ends of the two backrest frames 1 through the rotation shaft 14, and the second pivot parts 231 disposed on the third rod part 23 of the backrest main body 2 are respectively pivoted with the first pivot parts 12 of the two backrest frames 1 through the pivot shaft 15 and a swing arm 13.

Therefore, referring to fig. 3, when a user sits on the chair 3 assembled with the chair back structure of the present invention and leans his back down on the chair back main body 2, please refer to fig. 4, the chair back main body 2 uses the pivot joint of the fourth rod 25 and the upper end of the chair back support 1 as a rotation point, so that the chair back main body 2 presents a required leaning-down angle along with the back force exerted by the user, please refer to fig. 5, in addition, by the pivot joint design of the third rod 23 under the chair back main body 2 and the chair back support 1 by the swing arm 13, a traction limit function can be generated on the chair back main body 2, so that the chair back main body 2 maintains a proper leaning-down angle, so that the user leans on the chair back main body 2 safely.

In addition, the design of the elastic section 213 of the two first rod portions 21 of the backrest main body 2 can make the backrest main body 2 generate a proper elastic deformation along with the backrest force of the user, so that the waist and the back of the user can be completely attached to the backrest main body 2 no matter the user is at any tilting angle, thereby obtaining a comfortable supporting effect and avoiding the situation that the user is easy to suffer from waist soreness and backache due to sitting on the chair 3 for a long time.

As can be seen from the above structure and embodiments, the present invention has the following advantages:

1. the chair back leaning-up support structure is pivoted between the chair back main body and the chair back support in a rotating way through the rotating connection part, so that the chair back main body can show a required leaning-up angle along with the back leaning force of a user, and in addition, the chair back main body is pivoted and connected with the lower end of the chair back support through the swinging arm to generate a traction limiting function on the chair back main body, so that the user can safely lie on the chair back main body.

2. The chair back tilting support structure of the invention is characterized in that the two side rod parts of the chair back main body are respectively provided with an elastic section, so that the chair back main body can generate an elastic deformation function, and no matter a user is at any tilting angle, the chair back main body can be attached to and supported on the waist and the back of the user, thereby being beneficial to the riding comfort.

The present invention is not limited to the above embodiments, and in particular, various features described in different embodiments can be arbitrarily combined with each other to form other embodiments, and the features are understood to be applicable to any embodiment except the explicitly opposite descriptions, and are not limited to the described embodiments.

Claims

1. A chair back tilt support structure, the chair back tilt support structure comprising:

the chair back support is provided with a first rotary joint part at the upper end, and a first pivot part is arranged at the lower part of the first rotary joint part of the chair back support and is pivoted with one end of a swing arm;

a chair back main body, including two first rod parts set up vertically and oppositely on the left and right, and a second rod part and a third rod part set up horizontally and oppositely up and down, and making two ends of the second rod part and two ends of the third rod part connect with two first rod parts, and forming a hollow area between two first rod parts and the second rod part and the third rod part, setting a fourth rod part horizontally between the hollow areas, and making two ends of the fourth rod part connect with two first rod parts, setting at least one second rotary part on the fourth rod part, to form a pivot joint with the first rotary part on at least one chair back support by a rotating shaft, setting at least one second pivot part on the third rod part, to form a pivot joint with the other end of the swing arm on at least one chair back support by a pivot, setting a pivot joint direction between the rotating shaft and the first rotary part and the second rotary part, and forming a pivot joint direction with one end of the swing arm and the other end of the pivot part and the swing arm, setting a pivot joint with the other end of the first rotary part and the second rod part and the swing arm in the same direction, and setting a pivot joint with the first rotary part and the second rod part between the second rod part, and forming a pivot joint with the first rod part, and the second rod part, and forming a position of the second rod part.

2. The chair back tilting support structure according to claim 1, wherein each of the two first rod portions of the chair back main body is formed with a downward inclined section which is inclined downward from an upper edge thereof and an upward inclined section which is inclined upward from a lower edge thereof, and the downward inclined section and the upward inclined section are connected by the elastic section.

3. The reclining chair back support structure of claim 2, wherein the flexible section of the first lever portion of the chair back main body is formed with a plurality of grooves formed along the length thereof.

4. The chair back leaning support structure of claim 1, wherein the chair back leaning support structure comprises two chair back supports, each of the two chair back supports has a first rotation portion at an upper end thereof, the two chair back supports have a first pivot portion at a lower portion of the first rotation portion thereof to respectively pivotally connect to one end of a swing arm, the chair back main body has a second rotation portion at a fourth rod portion thereof to respectively pivotally connect to the first rotation portions of the two chair back supports with a rotation shaft, the third rod portion has a second pivot portion to respectively pivotally connect to the other ends of the two swing arms pivotally connected to the two chair back supports with a pivot shaft.