CN209846608U - Backrest for office chair - Google Patents

Abstract

The utility model relates to a thing to sit on field, specific saying so relates to the essential element of office chair, especially office chair's back. The utility model provides a back for office chair, includes the plastics dorsal scale, two foam-rubber cushions of bilateral symmetry are openly installed to the plastics dorsal scale, foam-rubber cushion surface material is non-woven fabrics also or leather, foam-rubber cushion upper portion is equipped with the headrest pad, the headrest pad with the foam-rubber cushion is sewed up, and its side junction is the screen cloth, the fixed elastic material layer that is equipped with on the plastics dorsal scale between two foam-rubber cushions, elastic material layer is rubber also or elasticity high polymer, U type groove has been seted up on the plastics dorsal scale of position between elastic material layer top, the headrest pad, be equipped with elastic connecting piece fixed connection between the plastics dorsal scale of U type groove both sides. The utility model has the advantages of comfortable use, certain health care and massage effects, good economic value and social value, low production cost and low price.

Description

Backrest for office chair

Technical Field

The utility model relates to a thing to sit on field, specific saying so relates to the essential element of office chair, especially office chair's back.

Background

At present, more and more people work in offices instead of manual labor, so that cervical spondylosis and lumbar spondylosis are frequent, and due to the fact that office chairs are main seats of the offices, the incidence rate of the diseases is determined to a great extent by the office chairs. In order to solve the problem, the application numbers are as follows: 201720793848.3 the patent product can be used to integrate medical products such as cervical vertebra tractor into office chair. The applicant considers that the chair is a headache doctor, and the core problem of the office chair is that the backrest is not comfortable enough, and a plurality of people do not rely on the backrest to work when using the office chair, so that a series of related problems are caused, and the key for solving the problems is how to manufacture the office chair backrest which is comfortable enough and has certain health care function.

Disclosure of Invention

In order to solve the above problems, an object of the present invention is to provide a backrest of an office chair that is comfortable enough and has a certain function of massaging cervical vertebrae and lumbar vertebrae.

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

a backrest for an office chair comprises a plastic back shell (1), two sponge cushions (2) which are bilaterally symmetrical are arranged on the front surface of the plastic back shell (1), the surface material of the spongy cushion (2) is non-woven fabric or leather, a headrest cushion (3) is arranged on the upper part of the spongy cushion (2), the headrest cushion (3) is sewed with the spongy cushion (2), the joint of the side edges is a mesh (5), an elastic material layer (4) is fixedly arranged on the plastic back shell (1) between the two sponge cushions (2), the elastic material layer (4) is made of rubber or elastic high molecular polymer, a U-shaped groove (6) is arranged on the plastic back shell (1) above the elastic material layer (4) and between the headrest pads (3), and elastic connecting pieces (7) are arranged between the plastic back shells (1) at the two sides of the U-shaped groove (6) for fixed connection. Firstly, the utility model clamps an elastic material layer between two spongy cushions, the elastic material layer is just in the most central position of the backrest and aims at the lumbar vertebra, in the using process, the elastic material layer has certain elasticity and can support the spinal column, the spongy cushions are softer, thus leaning against the backrest, the function of pressing the lumbar vertebra is achieved, but the elastic material layer is not very strong in press fit feeling, the lumbar vertebra can be massaged while the use is comfortable, the headrest part can break through a U-shaped groove arranged in the middle of the backrest shell at the rear part of the headrest cushion, the two parts are connected through a soft elastic connecting piece, thus, when the head leans against, the backrest shell can generate the deformation of twisting towards the center, as the headrest cushion is higher than the plane of the spongy cushions, thus, the lateral force pressing towards the head can be generated, and when the body slightly slides downwards, the two headrest cushions can clamp the head to be immobile, thus, a weak neck lifting effect can be generated, can also keep the cervical vertebra healthy, so the utility model discloses the headrest part is better than traditional headrest by the sense of leaning on, more comfortable. The above structure is solved with the least expensive cost the utility model discloses a basically problem that will solve.

Preferably, the elastic connecting piece (7) is I-shaped, U-shaped and Y-shaped transversely connected backwards, and the middle position of the elastic connecting piece is thinner than the connecting ends at the two ends. The elastic connecting piece with the structure is more attractive in shape and can meet performance requirements, and the middle position is thinner so as to ensure the deformation requirement.

Preferably, an inverted Y-shaped groove (8) is formed in the lower portion of a U-shaped groove (6) in the back of the plastic back shell (1), a triangular elastic filling block (9) matched with the inverted Y-shaped groove in shape is arranged at an opening in the bottom of the inverted Y-shaped groove (8), and the top of the Y-shaped groove (8) is communicated with the bottom of the U-shaped groove (6). This structure can make the deformation of plastics dorsal scale more violent, and the elasticity filling block is the resilience force that provides the deformation and guarantees not to temper. Because the bottom of the inverted Y-shaped groove and the waist of the plastic back shell are positioned on a horizontal line close to each other, the connection width of the plastic back shell is the shortest, and the requirement of torsional deformation can be met to the maximum extent.

Preferably, the plastic back shell (1) is of a waist-contracting-shaped structure, the bottom of the plastic back shell is arc-shaped, and the left side and the right side of the lower half part of the plastic back shell are respectively provided with two connecting pieces (10) connected with a chair. Because the backshell need twist reverse, traditional direct bottom middle setting is obviously unsuitable with the connecting piece of chair, can lead to twisting unfavorable also or various circumstances such as fracture like this, in order to avoid this condition, the utility model discloses the novelty sets up the connecting piece in the left and right sides of back bottom, makes the dead point be located both sides so promptly, makes things convenient for central point to put the deformation and twists reverse, has guaranteed structural strength moreover.

The utility model has the advantages of comfortable use, certain health care and massage effects, good economic value and social value, low production cost and low price.

Drawings

FIG. 1 is a schematic structural view of the present invention;

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

fig. 3 is a rear view of the present invention.

The reference numbers in the drawings are as follows:

1 plastic dorsal scale, 2 foam-rubber cushions, 3 pillows, 4 elastic material layers, 5 mesh fabrics, 6U type grooves, 7 elastic connecting pieces, 8 type grooves of falling Y, 9 elastic filling blocks and 10 connecting pieces.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The backrest for the office chair shown in figures 1-2 comprises a plastic back shell 1, two bilaterally symmetrical spongy cushions 2 are arranged on the front surface of the plastic back shell 1, the surface material of the spongy cushion 2 is non-woven fabric or leather, the upper part of the spongy cushion 2 is provided with a headrest cushion 3, the headrest cushion 3 is sewed with the spongy cushion 2, the mesh cloth 5 is arranged at the side edge joint, the mesh cloth 5 is convenient to discharge and suck the air in the headrest cushion 3, the deformation is convenient, the shape is more flexible, an elastic material layer 4 is fixedly arranged on the plastic back shell 1 between the two spongy cushions 2, the elastic material layer 4 is rubber or elastic high molecular polymer, and a U-shaped groove 6 is formed in the plastic back shell 1 above the elastic material layer 4 and between the headrest pads 3, and elastic connecting pieces 7 are arranged between the plastic back shells 1 at two sides of the U-shaped groove 6 and fixedly connected with each other. The elastic connecting piece 7 is I-shaped, U-shaped and Y-shaped and is transversely connected with the back, and the middle position of the elastic connecting piece is thinner than the connecting ends at the two ends.

The backrest for the office chair as shown in figures 1 to 3 comprises a plastic back shell 1, two bilaterally symmetrical spongy cushions 2 are arranged on the front surface of the plastic back shell 1, the surface material of the spongy cushion 2 is non-woven fabric or leather, the upper part of the spongy cushion 2 is provided with a headrest cushion 3, the headrest cushion 3 is sewed with the spongy cushion 2, the mesh cloth 5 is arranged at the side edge joint, the mesh cloth 5 is convenient to discharge and suck the air in the headrest cushion 3, the deformation is convenient, the shape is more flexible, an elastic material layer 4 is fixedly arranged on the plastic back shell 1 between the two spongy cushions 2, the elastic material layer 4 is rubber or elastic high molecular polymer, and a U-shaped groove 6 is formed in the plastic back shell 1 above the elastic material layer 4 and between the headrest pads 3, and elastic connecting pieces 7 are arranged between the plastic back shells 1 at two sides of the U-shaped groove 6 and fixedly connected with each other. Elastic connection spare 7 is I type, U type, the horizontal back connection of Y type, and wherein intermediate position is thinner than both ends link, 1 back U type groove 6 below of plastics dorsal scale has seted up inverted Y type groove 8, 8 bottom openings in inverted Y type groove are equipped with shape assorted triangle-shaped elastic filling block 9 with it, 8 tops in Y type groove with U type groove 6 bottom intercommunication. The plastic back shell 1 is of a waist-contracting-shaped structure, the bottom of the plastic back shell is arc-shaped, and the left side and the right side of the lower half part of the plastic back shell are respectively provided with two connecting pieces 10 connected with a chair.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the principles and spirit of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (4)

1. A backrest for an office chair is characterized by comprising a plastic back shell (1), the front surface of the plastic back shell (1) is provided with two sponge cushions (2) which are symmetrical left and right, the surface material of the spongy cushion (2) is non-woven fabric or leather, a headrest cushion (3) is arranged on the upper part of the spongy cushion (2), the headrest cushion (3) is sewed with the spongy cushion (2), the joint of the side edges is a mesh (5), an elastic material layer (4) is fixedly arranged on the plastic back shell (1) between the two sponge cushions (2), the elastic material layer (4) is made of rubber or elastic high molecular polymer, a U-shaped groove (6) is arranged on the plastic back shell (1) above the elastic material layer (4) and between the headrest pads (3), and elastic connecting pieces (7) are arranged between the plastic back shells (1) at the two sides of the U-shaped groove (6) for fixed connection.

2. A back rest for office chairs as claimed in claim 1, characterised in that the elastic connecting element (7) is an I-, U-or Y-shaped transverse rear connection, with a central position thinner than the two end connection ends.

3. The backrest for the office chair as claimed in claim 1, wherein an inverted Y-shaped groove (8) is formed below the U-shaped groove (6) on the back surface of the plastic back shell (1), a triangular elastic filling block (9) matched with the inverted Y-shaped groove (8) in shape is arranged at the bottom opening of the inverted Y-shaped groove, and the top of the Y-shaped groove (8) is communicated with the bottom of the U-shaped groove (6).

4. The backrest for an office chair as claimed in claim 1, wherein the plastic back shell (1) has a waist-like structure, the bottom of which is arc-shaped, and the left and right sides of the lower half of which are respectively provided with two connecting members (10) connected with the chair.