CN212878510U

CN212878510U - Elastic supporting structure of chair back

Info

Publication number: CN212878510U
Application number: CN202021948974.XU
Authority: CN
Inventors: 朱月新
Original assignee: Zhejiang Kemi Bear Technology Co ltd
Current assignee: Zhejiang Kemi Bear Technology Co ltd
Priority date: 2020-09-08
Filing date: 2020-09-08
Publication date: 2021-04-06
Anticipated expiration: 2030-09-08

Abstract

The utility model discloses an elastic supporting structure of a chair back, which comprises a chair back and a supporting component for supporting the chair back, wherein the supporting component comprises a connecting part elastically connected with the chair back, and the connecting part is provided with two column-shaped elastic parts which are bilaterally symmetrical; the two elastic pieces extend from the two sides of the connecting part to the direction close to the center of the chair back respectively; the chair back is correspondingly provided with mounting grooves for accommodating the two elastic pieces; the two elastic pieces are embedded and fixed in the mounting groove; the two elastic pieces extend from the two sides of the seat to the center of the seat back, so that after the elastic pieces are embedded and installed in the installation grooves, the contact area between the elastic pieces and the seat back is larger; when the chair back is stressed to enable the elastic piece to twist, the chair back can twist up and down and left and right, so that the self-adaptive adjustment of the chair back is realized, the dynamic sitting posture of a human body is adapted, and the chair is more in line with human engineering mechanics.

Description

Elastic supporting structure of chair back

Technical Field

The utility model relates to a component connection field of thing to sit on, in particular to elastic support structure of the back of the chair.

Background

Along with the improvement of living standard, the requirement of consumers on chairs is higher and higher, and the chairs are used in the most extensive occasions such as families or offices, and the traditional integrated chairs are gradually eliminated in the occasions, and the reasons for the problem are mainly that the existing chair back frame is directly fixed with the support frame, so that the comfort is not high, and the chair back cannot be changed along with the backward leaning process of the users; the chair has no self-adaptive function, and a user can be subjected to the reaction force of the chair back in the process of reclining backwards and cannot be well unfolded.

Some backrests in the market at present can be connected with the support frame through spring coupling spare or elastic component in order to realize the wrench movement of the back of the chair, make the adaptive capacity of chair improve and be convenient for satisfy more users. Although the spring connecting piece has good elastic effect and larger adjustable range of the chair back, the spring connecting piece has the defects that the spring assembly is easy to deform, and after the deformation exceeds a certain range, the elastic force of the spring is permanently destroyed, and the spring connecting piece can be used for resisting the deformation.

In addition, some chair backs are connected by elastic rubber pieces, the chair backs are connected with one ends of the elastic rubber pieces, and the other ends of the elastic rubber pieces are connected with the supporting frames, so that the chair backs are only connected at one point to complete position adjustment, the connection firmness is low, the service life of the elastic rubber pieces is short, and the elastic rubber pieces are easy to break; this makes the adaptive adjustment effect limited and the user experience poor. And the elastic rubber part is completely exposed outside the seat, which affects the beauty and is not in accordance with modern aesthetic.

Disclosure of Invention

The utility model overcomes the defects in the prior art and provides an elastic supporting structure of the chair back, which is provided with a supporting component for supporting the chair back; the support component comprises a connecting part elastically connected with the chair back, two column-shaped elastic pieces which are symmetrical left and right are arranged on the connecting part, and the two elastic pieces extend from two sides of the connecting part to the center direction of the chair back respectively; the chair back is correspondingly provided with a mounting groove for accommodating the elastic piece, and the elastic piece is embedded and fixed in the mounting groove; the elastic piece is connected with the chair back in the connection mode, so that the connection strength between the elastic piece and the chair back is higher; the elastic piece is embedded in the mounting groove, so that when the chair back rotates, the contact area between the elastic piece and the mounting groove is large, and the surface stress of the elastic piece is more dispersed; the elastic piece is more durable and has longer service life; and the elastic piece is hidden in the mounting groove, so that the connecting structure is simpler and more attractive.

The technical scheme of the utility model is realized like this:

an elastic support structure of a chair back comprises the chair back and a support component for supporting the chair back, wherein the support component comprises a connecting part elastically connected with the chair back, and two column-shaped elastic pieces which are bilaterally symmetrical are arranged on the connecting part; the two elastic pieces extend from the two sides of the connecting part to the direction close to the center of the chair back respectively; the chair back is correspondingly provided with mounting grooves for accommodating the two elastic pieces; the two elastic pieces are embedded and fixed in the mounting groove. The two elastic pieces extend from the two sides of the seat to the center of the seat back, so that after the elastic pieces are embedded and installed in the installation grooves, the contact area between the elastic pieces and the seat back is larger; when the chair back is stressed to twist the elastic piece, the stress on the surface of the elastic piece is more dispersed, so that the elastic piece has better durability and longer service life.

Preferably, the elastic piece inclines towards the center direction of the chair back, and the mounting groove corresponds to the shape of the elastic piece; the elastic component is embedded into the mounting groove, and the outer surface of the elastic component is attached to the wall of the mounting groove. The elastic piece is obliquely arranged and is attached to the wall of the mounting groove; in the process of twisting the elastic part, the acting force of the chair back on the elastic part is not concentrated on a certain point any more; the elastic part is more dispersed in stress and is not easy to damage after long-time use.

Preferably, the elastic member is a curved column-shaped rubber member. The cost is lower, and the processing is easier; and the elastic piece is bent to be more easily fit with the chair back, so that the contact surface with the chair back is increased.

Preferably, a connecting column with threads is arranged in the mounting groove, a through hole is formed in the elastic piece in the front-back direction, and the elastic piece is fixedly mounted in the mounting groove through screws. Pass through the screw fixation through elastic component and mounting groove for joint strength between the two is higher.

Preferably, the mounting groove is formed on the back surface of the chair back, and the opening position preset on the back surface of the chair back is sunken towards the interior of the chair back. The mounting groove forms and the back of the chair back for after the elastic piece is embedded, the elastic piece can be hidden in the chair back, and the whole structure is simpler.

Preferably, the back surface of the chair back is also connected with a rear cover for covering the mounting groove and the elastic piece; after the elastic piece is installed in the installation groove, the rear cover is fixed on the chair back through screw connection. Cover mounting groove and elastic component through the back lid, make the seat back more regular.

Preferably, the left end and the right end of the mounting groove are respectively provided with a movable groove for accommodating the elastic piece; when the chair back rotates left and right, the chair back deflects to make the elastic piece be positioned in the movable groove. The movable groove is arranged, so that the left and right torsion amplitude of the chair back is larger; and prevent the chair back from excessively extruding with the elastic piece when rotating left and right.

Preferably, the support assembly further comprises a main body, the connecting portion comprises a connecting arm for connecting the two elastic members, and the connecting arm is formed by extending two ends of the main body forward respectively; the elastic member is connected to an end of the connecting arm. Be equipped with the linking arm in order to connect the elastic component, the connection effect is better.

Preferably, the connecting arm is provided with a slot, and the elastic piece is correspondingly provided with an inserting column which is in inserting fit with the slot; the inserting column is fixedly connected with the inserting slot through screws after being inserted into the inserting slot. Through inserting post and slot, guarantee the joint strength between elastic component and linking arm.

Preferably, the main body part is in a dumbbell shape and comprises a support cross rod and connecting sleeves positioned at two ends of the support cross rod; the connecting arm is arranged on the connecting sleeve and is integrally formed with the connecting sleeve. The connecting arm sets up on adapter sleeve for when the elastic component wrench movement, the stress point acts on the chair pole, and the wrench movement effect is better.

Adopted above-mentioned technical scheme the utility model discloses a design departure point, theory and beneficial effect are:

at first, be equipped with the cylindricality elastic component of two symmetries on this elastic support structure connecting portion, correspond on the back of the chair and be equipped with the mounting groove, the elastic component embedding is installed in the mounting groove, and two cylindricality elastic components respectively from the both sides of connecting portion towards the central direction slant extension setting that is close to the back of the chair to when realizing that the user uses the back of the chair, the back of the chair can be turned round from top to bottom, left and right sides, realizes the self-adaptation regulation of the back of the chair, adapts to human dynamic position of sitting, makes the seat more.

Secondly, the two elastic pieces are bent and inclined towards the center of the chair seat and embedded in the mounting groove, so that when the chair back is twisted, the contact area between the elastic pieces and the mounting groove is larger; when the elastic piece is twisted, the elastic piece is contacted with the groove wall of the mounting groove, and the force applied to the elastic piece by the chair back is more dispersed; compared with the traditional mode that the elastic piece is connected with the chair back through one point, the elastic piece is more durable and has longer service life.

Moreover, the elastic piece is connected with the connecting arm through a screw after being spliced and matched through the inserting column; a connecting column with threads is arranged in the mounting groove, and the elastic piece is fixedly mounted in the mounting groove through a screw; the connecting strength between the elastic piece and the connecting arm and between the elastic piece and the chair back is enough, so that the chair back can bear larger load.

The mounting groove is formed in the back of the chair back, and after the elastic piece is mounted in the mounting groove, a back plate is connected to the back of the chair back to hide the mounting groove and the elastic piece; the whole structure is simple and beautiful, and the modern aesthetic feeling is met.

Drawings

FIG. 1 is a schematic perspective view of the connection between the chair back and the chair rod according to the embodiment of the present invention;

FIG. 2 is a schematic perspective view of the inside of the joint between the chair back and the chair rod according to the embodiment of the present invention;

FIG. 3 is a schematic perspective view of a connecting portion of a chair back and a chair rod according to an embodiment of the present invention;

fig. 4 is a rear view of a chair back according to an embodiment of the present invention;

fig. 5 is a schematic perspective view illustrating the elastic member connected to the connecting arm according to the embodiment of the present invention;

fig. 6 is a schematic perspective view of a supporting assembly according to an embodiment of the present invention.

The figures are numbered: a chair back 1; a chair rod 2; a support assembly 3; a main body portion 4; a support rail 4 a; a connection sleeve 4 b; a connecting portion 5; an elastic member 6; a mounting groove 7; a connecting arm 8; a plug-in post 9; a jack 10; a first mounting hole 11; a through hole 12; a connecting column 13; a second mounting hole 14; a movable groove 15; a rear cover 16; a rubber sleeve 17.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

In the description of the present invention, the term "at least one" means one or more unless explicitly defined otherwise. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The present embodiment is described with reference to the reference orientation of each part, such as front and rear, in a state where the user normally uses the seat after sitting on the seat.

The specific implementation manner of the utility model is as follows:

as shown in fig. 1-6, the utility model provides an elastic support structure of a chair back, which comprises a chair back 1 and two bilaterally symmetrical chair rods 2 for supporting the chair back 1, wherein the chair rods 2 are chair back support rods vertically arranged; a supporting component 3 is arranged between the chair back 1 and the chair rod 2, and the supporting component 3 comprises a main body part 4 connected with the chair rod 2 in a sliding way and a connecting part 5 elastically connected with the chair back 1; the connecting part 5 comprises two bilaterally symmetrical elastic pieces 6, and the elastic pieces 6 are bent column-shaped rubber pieces; an inward-concave mounting groove 7 is correspondingly arranged on the back surface of the chair back 1; when the installation is carried out, the elastic piece 6 is installed and fixed in the installation groove 7; so that when a user leans against the chair back 1, the elastic piece 6 can be bent, twisted and deformed to realize the self-adaptive adjustment of the chair back 1.

As shown in fig. 3-5, specifically: the main body part 4 is in a dumbbell shape and comprises a supporting cross rod 4a and connecting sleeves 4b connected to two ends of the supporting cross rod 4 a; the two connecting sleeves 4b are respectively sleeved on the two chair rods 2 in a sliding manner, can ascend and descend along the chair rods 2 to stay at any height, and can be inserted into preset adjusting holes in the chair rods 2 through bolts for stopping the connecting sleeves 4 b; since the invention is not the point of the invention, it is not described in detail here.

The connecting part 45 is positioned at the front end of the main body part 4, and the connecting part 5 is provided with a connecting arm 8 for connecting the elastic part 6; the connecting arms 8 are respectively arranged on the two connecting sleeves 4b, the connecting arms 8 and the connecting parts 5 are integrally formed, the connecting arms 8 are formed by bending and extending the front ends of the connecting sleeves 4b forwards and towards the direction close to the other connecting arm 8, and the bending direction faces to the centers of the two chair rods 2; as shown in fig. 6, the two elastic members 6 are respectively connected and fixed to the ends of the two connecting arms 8, and the specific installation manner is as follows: the rear end of the elastic piece 6 is provided with a cubic inserting column 9, and the connecting arm 8 is correspondingly provided with a jack 10 which is in inserting fit with the inserting column 9; the lower end of the connecting arm 8 is provided with a first mounting hole 11, and the lower surface of the inserting column 9 is correspondingly provided with a through hole 12; when in connection, after the two elastic pieces 6 are respectively inserted on the left connecting arm 8 and the right connecting arm 8, the elastic pieces 6 and the connecting arms 8 are fixed together through screws; as shown in fig. 5, both elastic members 6 are fixed on the connecting arm 8; by the connection method, the elastic piece 6 is tightly connected with the connecting arm 8, and the connection strength between the elastic piece and the connecting arm is enough; the structure is more stable.

As shown in fig. 2-5, after the two elastic members 6 are finally mounted on the connecting arm 8, from back to front, the two elastic members 6 are both bent and inclined from the two side chair rods 2 toward the center of the chair back 1, and the two elastic members 6 are bilaterally symmetrical. The mounting groove 7 is transversely arranged on the back of the chair back 1; the mounting groove 7 is an arc-shaped groove, and the arc-shaped outline of the mounting groove is matched with the bending shape of the elastic piece 6; when in connection, the chair back 1 and the connecting part 5 are in front-back butt joint, the two elastic pieces 6 are embedded in the mounting groove 7, and the outer surfaces of the elastic pieces 7 are attached to the groove wall of the mounting groove 7; two symmetrical threaded connecting columns 13 are arranged in the mounting groove 7, and two elastic pieces 6 are correspondingly provided with second mounting holes 14 which penetrate through the front and the back; after the elastic piece 6 is embedded in the mounting groove 7, the elastic piece 6 is screwed and fixed in the connecting column 13 through the bolt passing through the second mounting hole 14, so that the elastic piece 6 is fixed in the mounting groove 7; namely the chair back 1 and the chair rod 2 are kept relatively fixed; in addition, the left end and the right end of the mounting groove 7 are respectively provided with a movable groove 15 for accommodating an elastic piece, when the chair back 1 rotates left and right, the chair back 1 deviates, so that the corresponding elastic piece 6 is positioned in the movable groove 15; and when back of the chair 1 left and right angle of rotation was too big, elastic component 6 and activity groove 15 butt in order to restrict back of the chair 1 and continue to deflect, can prevent that elastic component 6 bending deformation is too big, causes the influence that can not retrieve.

As shown in fig. 1-2, after the elastic element 6 and the chair back 1 are installed and fixed, the back surface of the chair back 1 is connected with a back cover 16 through a screw, and the back cover 16 can hide the installation groove 7 and the elastic element 6, so that the whole back surface of the chair is simpler and more beautiful, and meets modern aesthetic requirements; a rubber sleeve 17 is arranged between the two connecting arms 8 and the elastic piece 6, the rubber sleeve 17 can be attached to the back of the chair back 1 in the rotation process of the chair back 1, the chair back 1 and the connecting arms 8 are prevented from being directly extruded with each other, the surfaces of the chair back 1 and the connecting arms 8 are prevented from being damaged, and products are effectively protected; and the connecting part of the elastic piece 6 and the movable groove 7 can be shielded, so that the whole body is more attractive.

The elastic pieces 6 adopt the connection structure, and the two elastic pieces 6 are embedded and fixed in the mounting groove 7; when a user leans against the chair back and applies force to the chair back 1, the elastic piece 6 can generate corresponding deformation to enable the chair back 1 to rotate in the up-down direction and the left-right direction, so that the self-adaptive adjustment of the chair back 1 is realized, the chair back 1 can be adjusted along with the dynamic sitting posture self-adaptive deflection of the user, the user experience effect is better, and the user engineering is better met; moreover, the firmness of the joints between the elastic piece 6 and the chair back 1 and between the elastic piece 6 and the main body part 4 is good, so that the chair back can bear larger force, and the load of the chair back is improved.

And the elastic supporting structure has the key points that: firstly, the chair back 1 is self-adaptive by means of two elastic elements 6, compared to a single elastic element: on the user's result of use, experience more comfortablely, the support nature of the back of the chair is better, can eliminate and shake the sensation of movement. Secondly, the elastic pieces 6 adopt the installation mode, so that the two elastic pieces 6 are bent and inclined from the chair rods at the two sides to the center of the chair back, and then the two elastic pieces 6 are embedded and fixed in the installation groove 7; then, the outer surfaces of the two elastic pieces 6 are attached to the inner wall of the installation and rotation groove 7, namely the contact area between the elastic pieces 6 and the chair back 1 is larger, compared with the traditional mode that the elastic pieces 6 are only connected with the chair back 1 through one point; undoubtedly, when the chair back 1 is twisted in a self-adaptive manner, the stress of the elastic piece 6 is dispersed, so that the durability of the elastic piece 6 is better and the service life is longer.

Claims

1. An elastic support structure of a chair back, characterized in that: the chair comprises a chair back and a supporting component for supporting the chair back, wherein the supporting component comprises a connecting part elastically connected with the chair back, and the connecting part is provided with two column-shaped elastic pieces which are bilaterally symmetrical; the two elastic pieces extend from the two sides of the connecting part to the direction close to the center of the chair back respectively; the chair back is correspondingly provided with mounting grooves for accommodating the two elastic pieces; the two elastic pieces are embedded and fixed in the mounting groove.

2. The flexible support structure for a chair back of claim 1, wherein: the elastic piece inclines towards the center direction of the chair back, and the mounting groove corresponds to the shape of the elastic piece; the elastic component is embedded into the mounting groove, and the outer surface of the elastic component is attached to the wall of the mounting groove.

3. The flexible support structure for a chair back of claim 2, wherein: the elastic part is a bent column-shaped rubber part.

4. The flexible support structure for a chair back of claim 2, wherein: the mounting groove in be equipped with threaded spliced pole, the elastic component on be equipped with the perforation along the fore-and-aft direction, the elastic component pass through screw fixed mounting in the mounting groove.

5. The flexible support structure for a chair back of claim 1, wherein: the mounting groove is formed in the back of the chair back, and the opening position preset in the back of the chair back is sunken towards the interior of the chair back.

6. The flexible support structure for a chair back of claim 5, wherein: the back of the chair back is also connected with a rear cover used for covering the mounting groove and the elastic piece; after the elastic piece is installed in the installation groove, the rear cover is fixed on the chair back through screw connection.

7. The flexible support structure for a chair back of claim 1, wherein: the left end and the right end of the mounting groove are respectively provided with a movable groove for accommodating the elastic piece; when the chair back rotates left and right, the chair back deflects to make the elastic piece be positioned in the movable groove.

8. The flexible support structure for a chair back of claim 1, wherein: the supporting component also comprises a main body part, the connecting part comprises a connecting arm for connecting the two elastic parts, and the connecting arm is formed by respectively extending the two ends of the main body part towards the front; the elastic member is connected to an end of the connecting arm.

9. The flexible support structure for a chair back of claim 8, wherein: the connecting arm is provided with a slot, and the elastic piece is correspondingly provided with an inserting column which is in inserting fit with the slot; the inserting column is fixedly connected with the inserting slot through screws after being inserted into the inserting slot.

10. The flexible support structure for a chair back of claim 8, wherein: the main body part is in a dumbbell shape and comprises a support cross rod and connecting sleeves positioned at two ends of the support cross rod; the connecting arm is arranged on the connecting sleeve and is integrally formed with the connecting sleeve.