CN220477270U - Chair back backward tilting structure - Google Patents

Abstract

The utility model provides a chair back backward tilting structure, which comprises a chair back, wherein the chair back can be connected to a chair seat in a back-and-forth swinging way, the chair back comprises an outer layer and an inner support, the inner support comprises an upper support and a lower support, at least 2 spring assemblies are arranged between the upper support and the lower support, and the upper support can be connected with the lower support in a spring swinging way through the spring assemblies; the upper bracket and the lower bracket are one of a plate structure or a frame structure; the spring assembly comprises a spring and connecting parts respectively connected with the upper end and the lower end of the spring; the inside inner support that is provided with of back of the chair to improve the back of the chair's support strength, the waist of lower carriage part support body, go up the upper back of support part support body, can laminate the waist back structure of health more when providing the support, when the user leans back, the back of the chair realizes two sections backward inclinations with the independent backward inclination of the back of the chair cooperation structure, accords with the back of the chair structure of different people and carries out the backward inclination of different range, reinforcing travelling comfort.

Description

Chair back backward tilting structure

Technical Field

The utility model relates to the technical field of seats, in particular to a chair back leaning structure.

Background

The chair is one of the necessary tools in life, so to speak, each family has, mainly for people to rest. The existing chairs have more styles, such as a wooden chair, a steel frame chair, a bamboo chair, a rattan chair and the like, but most of the chairs are hard sitting surface back chairs, and the back of the chair is small in backward inclination angle, so that the chair can only sit and cannot lie; therefore, the couch with soft materials appears in the market, and the existing couch is more comfortable in softness, and the chair back of the couch with excessive softness is provided with the chair back capable of leaning backwards, however, the chair back of the couch with excessive softness is easy to cause insufficient supporting property, the chair back capable of leaning backwards is easy to cause back fatigue of a user after sitting for a long time or lying for a long time, and the chair back capable of leaning backwards is basically an integral back, if the back can not be completely attached to the back of a human body, the chair back can only support the waist or the upper back of the user independently during leaning backwards, so that the comfort is insufficient, and meanwhile, a single chair back structure is difficult to adapt to users with different heights and weights, so that the comfort is insufficient.

Disclosure of Invention

In view of this, the present utility model provides a chair back recline structure.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a back of chair retroverted structure, includes the back of the chair, the back of the chair can the back of the chair back swing connect on the seat support, the back of the chair include skin and inner support, the inner support include upper bracket and lower carriage, upper bracket and lower carriage between be equipped with 2 at least spring assembly, the upper bracket pass through spring assembly but elastic swinging connect the lower carriage.

In the preferred technical scheme, the upper bracket and the lower bracket are one of plate structures or frame structures, and the spring component is connected with the upper bracket and the lower bracket through welding or screws.

In a preferred technical scheme, the spring assembly comprises a spring and connecting parts respectively connected with the upper end and the lower end of the spring.

In the preferred technical scheme, the connecting part is provided with threads matched with the springs, and the connecting part is rotationally embedded into the springs through the threads so as to realize tight fit connection of the connecting part and the springs.

In the preferred technical scheme, the upper bracket and the lower bracket of the plate structure are respectively one of a wood plate, a plastic plate and a metal plate, the upper end and the lower end of the spring assembly are connected and provided with fixing plates, and the fixing plates are attached to the surfaces of the upper bracket and the lower bracket and are fixedly connected through screws.

In the preferred technical scheme, the upper bracket and the lower bracket of the frame structure are respectively provided with an outer frame of a tubular structure, and the upper end and the lower end of the spring assembly are respectively embedded into pipe holes formed by the upper bracket and the lower bracket and are welded and fixed.

In the preferable technical scheme, one or more supporting bars with wave structures are arranged on the inner side of the outer frame.

In the preferred technical scheme, the lower carriage both sides be equipped with outside convex pole, the handrail that is equipped with on the protruding pole connection seat support.

In the preferred technical scheme, the upper bracket and the lower bracket are arc-shaped structures in side view.

Compared with the prior art, the utility model has the following beneficial technical effects:

the inside inner support that is provided with of back of the chair to improve the support strength of back of the chair, the inner support is constituteed through the upper bracket and the lower carriage that are connected by spring assembly, realizes the independent elasticity of back of the chair, and the lower carriage part supports the waist of health, and the upper back of the body is supported to the upper support part, can laminate the waist back structure of health more when providing the support, reduces the probability that the seat for a long time caused waist back soreness, and when the back of the chair was reclined with the independent back of the chair structure cooperation back of the chair realization can two sections of back inclinations, and elasticity is better, accords with the back of the waist structure of different people and carries out the backward inclination of different ranges, realizes following back laminating human whole back, reinforcing travelling comfort.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view of a chair with a hidden outer layer of the back.

Fig. 2 is a left-view schematic structure of the chair.

Fig. 3 is a schematic view of the backset effect of the inner stent.

Fig. 4 is a schematic exploded view of the inner bracket.

Fig. 5 is a schematic side view of the inner bracket.

Fig. 6 is a schematic view of the internal support structure of the plate structure.

Reference numerals: 100. a chair back; 200. a seat; 110. an outer layer; 120. an upper bracket; 130. a lower bracket; 140. a spring assembly; 141. a spring; 142. a connection part; 143. a fixing plate; 121. an outer frame; 122. a support bar; 131. a protruding rod; 210. an armrest.

Detailed Description

The utility model will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the utility model and therefore show only the structures which are relevant to the utility model.

In the description of the present application, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships that are based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in the present application can be understood as appropriate by one of ordinary skill in the art.

Referring to fig. 1-6, a chair back recline structure includes a chair back 100, wherein the chair back 100 can swing back and forth and is connected to a chair seat 200, and in general, the chair back 100 and the chair seat 200 are connected by adopting a structure of a spring column or a rotating shaft, so that the chair back 100 can swing back and forth, a user sits on the chair seat 200 and leans back, the chair back 100 can elastically or buffer and recline back, and the chair back 100 can adapt to different sitting postures of the user and provide corresponding support; the chair back 100 comprises an outer layer 110 and an inner bracket, wherein the outer layer 110 is formed by combining sponge and leather materials or other flexible materials, and comprises the inner bracket so as to improve the comfort of the chair back 100 and make the chair back more attractive, but the material of the outer layer 110 is not limited to the embodiment; the inner support is used as the integral supporting structure of the chair back 100, the inner support is of a two-section structure and comprises an upper support 120 of an upper half part and a lower support 130 of a lower half part, two spring assemblies 140 are arranged between the upper support 120 and the lower support 130, the upper support 120 can be elastically swung to be connected with the lower support 130 through the spring assemblies 140, and the upper support 120 can be elastically reclined due to the 2-section structure with elastic connection, so that the chair back 100 can realize secondary recline when being reclined on the chair seat 200, the comfort is better, the chair back 100 can be more attached to the back of a user, more reasonable support is provided, and a certain protection effect is correspondingly achieved on the back bones and muscles of the user.

Further, the upper bracket 120 and the lower bracket 130 are one of a plate structure or a frame structure, the spring assembly 140 connects the upper bracket 120 and the lower bracket 130 through welding or screws, the plate structure and the frame structure are used as inner brackets formed by different structures, and can be formulated according to specifications of different products such as styles or sizes in the practical implementation process, and the upper bracket 120 and the lower bracket 130 are connected through the spring assembly 140 no matter the plate structure or the frame structure is adopted, so as to ensure elastic connection of the upper bracket 120 and the lower bracket 130; the spring assembly 140 includes a spring 141 and a connection part 142 connected to the upper and lower ends of the spring 141, respectively, the spring 141 is an elastic part of the spring assembly 140, the connection part 142 is used for connecting the upper bracket 120 and the lower bracket 130, the connection part 142 is provided with threads matched with the spring 141, the spring 141 is cylindrical, oblique lines are formed, the two lines are matched with each other, the connection part 142 is embedded into the spring 141 through threaded rotation to realize tight fit connection of the two, the connection structure is better than welding connection, because high temperature generated during welding can cause the spring to deform to influence the elasticity of the spring, and the structure of the spring assembly 140 can be applied to an inner bracket of a plate structure or a frame structure to realize independent backward tilting of the chair back 100.

Further, as shown in fig. 6, when the upper and lower brackets 120 and 130 are constructed of a plate, the plate may be made of one of wood, plastic and metal, and in the production of chairs, the wooden plate is relatively commonly used, the upper and lower ends of the spring assembly 140 are coupled with the fixing plates 143, the fixing plates 143 are attached to the surfaces of the upper and lower brackets 120 and 130 and fixed by screws, and since the upper and lower brackets 120 and 130 of the plate are required to increase the contact area of the coupling by the fixing plates 143 to ensure the stability of the coupling, the 2 spring assemblies 140 are respectively positioned at both sides of the centers of the upper and lower brackets 120 and 130.

Further, as shown in fig. 4, when the upper and lower brackets 120 and 130 are constructed in a frame structure, the upper and lower brackets 120 and 130 are respectively provided with an outer frame 121 having a tubular structure, the outer frame 121 is made of a metal pipe by a bending or welding process, the outer frame 121 serves as a main structure of the upper and lower brackets 120 and 130, pipe holes formed in the outer frames 121 of the upper and lower brackets 120 and 130 are respectively directed downward and upward, and upper and lower ends, i.e., upper and lower connection portions, of the spring assembly 140 are respectively inserted into the pipe holes of the upper and lower brackets 120 and 130 and are welded and fixed to ensure stable connection of the upper and lower brackets 120 and 130; the inner sides of the outer frame 121 of the upper bracket 120 and the outer frame 121 of the lower bracket 130 are respectively provided with three supporting bars 122 with a wave structure, and the supporting bars 122 provide supporting and elastic buffering effects for the chair back 100, so that the chair back adopting the frame structure has stability and comfort.

Furthermore, the two sides of the lower bracket 130 are provided with protruding rods 131 protruding outwards, the protruding rods 131 are connected with armrests 210 arranged on the chair seat 200, and normally, the protruding rods 131 are rotatably connected with the armrests 210, when the chair back 100 leans backwards, the bottom of the chair back 100 is rotatably connected with the chair seat 200, and when the chair back 100 leans backwards, the chair back 100 rotates relative to the armrests 210, and the bottom of the chair back 100 pushes the chair seat 200 forwards, so that users can normally use the armrests 210 when the chair back 100 leans at different angles; the upper bracket 120 and the lower bracket 130 are arc-shaped in side view, if the upper bracket 120 and the lower bracket 130 adopt plate structures, the plates have arc-shaped structures, and the radian is set to enable the chair back 100 to be more matched with the shape of the back of a human body, so that the chair back 100 can be naturally tilted backwards when the back of a user is attached to the chair back 100, the tilting range of the chair back is not required to be adjusted, and a proper tilting effect is naturally achieved.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. The utility model provides a back of chair retroverted structure, includes back of the chair (100), back of the chair (100) can back and forth swing connect on seat support (200), its characterized in that: the chair back (100) comprises an outer layer (110) and an inner support, the inner support comprises an upper support (120) and a lower support (130), at least 2 spring assemblies (140) are arranged between the upper support (120) and the lower support (130), and the upper support (120) can be elastically swung through the spring assemblies (140) to be connected with the lower support (130).

2. A chair back recline structure according to claim 1, wherein: the upper bracket (120) and the lower bracket (130) are one of plate structures or frame structures, and the spring assembly (140) is connected with the upper bracket (120) and the lower bracket (130) through welding or screws.

3. A chair back recline structure according to claim 1, wherein: the spring assembly (140) comprises a spring (141) and connecting parts (142) respectively connected with the upper end and the lower end of the spring (141).

4. A chair back recline structure according to claim 3, wherein: the connecting part (142) is provided with threads matched with the spring (141), and the connecting part (142) is rotationally embedded into the spring (141) through the threads so as to realize tight fit connection of the connecting part and the spring.

5. A chair back recline structure in accordance with claim 2, wherein: the upper bracket (120) and the lower bracket (130) of the plate structure are respectively one of a wood plate, a plastic plate and a metal plate, the upper end and the lower end of the spring assembly (140) are connected and provided with fixing plates (143), and the fixing plates (143) are attached to the surfaces of the upper bracket (120) and the lower bracket (130) and are fixedly connected through screws.

6. A chair back recline structure in accordance with claim 2, wherein: the upper bracket (120) and the lower bracket (130) of the frame structure are respectively provided with an outer frame (121) of a tubular structure, and the upper end and the lower end of the spring assembly (140) are respectively embedded into pipe holes formed by the upper bracket (120) and the lower bracket (130) and are welded and fixed.

7. The chair back recline structure of claim 6, wherein: the inner side of the outer frame (121) is provided with one or more supporting bars (122) with wave structures.

8. A chair back recline structure according to claim 1, wherein: two sides of the lower bracket (130) are provided with convex rods (131) protruding outwards, and the convex rods (131) are connected with armrests (210) arranged on the chair seat (200).

9. A chair back recline structure according to claim 1, wherein: the upper bracket (120) and the lower bracket (130) are arc-shaped structures in side view.