CN214760163U - Chair and chair back assembly thereof - Google Patents

Abstract

The utility model discloses a back of chair subassembly, lean on and the back of the chair frame including the back of the chair, waist, the below at the back of the chair is connected to the back of the chair frame, the upper portion that the waist was leaned on and the back of the chair or back of the chair frame swing joint, still including setting up the support piece between the back of the chair and waist are leaned on, support piece is S type elastic support piece, support piece 'S upper portion and the back of the chair or back of the chair frame fixed connection, support piece' S lower part and the sub-unit connection that the waist leaned on, the waist leans on relative back of the chair tilting and leans on to carry out elastic support to the waist through support piece. Through the elastic support piece who sets up the S type between back of the chair and waist leans on, when the waist leans on because of the atress produces the trend of backward movement, the power that support piece received disperses on whole support piece, increases support piece' S life, and waist leans on, support piece, the connection structure between back of the chair and the back frame is simple, easy dismounting, and support piece setting is between back of the chair and waist leans on, and from the back, support piece can not expose, and back of the chair subassembly is whole pleasing to the eye.

Description

Chair and chair back assembly thereof

Technical Field

The utility model relates to the field of furniture, especially, relate to a chair and back of the chair subassembly thereof.

Background

Sub-health is a living problem which is always concerned by people, wherein, because lumbar vertebra problems brought by long-time sitting are particularly common, as is well known, the spine of a human body is S-shaped, and serious lumbar vertebra diseases can be caused if the human body is in incorrect sitting posture for a long time or the structure of a chair is unreasonable, so that waist protection is an important component of an office chair. Can support human lumbar vertebrae through the waist support, effectively alleviate the pressure of user 'S waist, and common seat back in the market at present, it is straight about general, perhaps the well lower part of back of the chair has slight hunch-up in order to improve the travelling comfort that the back of the seat supported, but the chair of these structures can not carry out better support to human S type spine, because every user' S height, size are different even, the user need respond to the radian of the back of the chair and carry out deliberate adjustment, the position of sitting is more incorrect.

In order to solve the above problems, CN272831Y discloses a "multi-stage backrest structure", which mainly uses a frame for the backrest to be serially connected and positioned, and then for the elastic rod frame of the headrest to be sleeved and fixed, wherein a waist plate is pivotally connected below the backrest plate, so that the lower end of the waist plate is pivotally connected to the elastic rod connected to the rear of the backrest plate, and the headrest and the elastic rod frame are pivotally connected, so that when a user lies and leans on, the headrest and the waist plate relatively provide an elastic support with a corresponding angle change. The waist board of this seat adjusts different angles according to the human body, through the elasticity buffer memory of the elastic rod of rear end, provides complete supporting effect to the user of different waist height, the power of leaning on of lying, but this scheme has following not enough:

1. when a user lies and leans on the waist board, the stress of the L-shaped elastic rod is mainly concentrated on the vertical edge of the elastic rod, and the vertical edge of the elastic rod is easy to damage or even break after long-term use or sudden exertion of force for lying and leaning;

2. in the seat, the structures between the elastic rod and the seat back plate and between the elastic rod and the waist rest are complex, so that the disassembly and the assembly are not facilitated;

3. the elastic rod is exposed at the rear part of the chair back plate, and the whole structure is not beautiful when the chair is seen from the back side of the chair.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model aims at providing a chair and back of the chair subassembly thereof, when the user leans on by the waist of lying, support piece is difficult to damage, and the back of the chair, waist lean on and the connection structure between the support piece simple moreover, easy dismounting, back of the chair subassembly is whole pleasing to the eye.

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

the utility model provides a back of chair subassembly, includes the back of the chair, waist leans on and the back of the chair frame, back of the chair frame integrated into one piece or fixed connection are in the below of the back of the chair, the upper portion that the waist leaned on and back of the chair or back of the chair frame swing joint, its characterized in that still leans on between support piece including setting up at the back of the chair and waist, support piece is S type elastic support piece, support piece 'S upper portion and back of the chair or back of the chair frame fixed connection, support piece' S lower part and the sub-unit connection that the waist leaned on, the waist leans on relative back of the chair tilting and leans on to carry out elastic support to the waist through support piece. Thus, when a user lies on the waist support, the waist support has the tendency of moving backwards due to stress, and the S-shaped elastic support piece disperses the stress on the whole support piece, so that the service life of the support piece is prolonged, the support piece is not easy to damage when being subjected to instant waist support acting force, the support piece is arranged between the chair back and the waist support, the support piece cannot be exposed when viewed from the back, and the chair back component is overall attractive.

Preferably, the upper part of the waist support is movably connected with the lower end of the chair back; or the upper part of the waist rest is movably connected with the upper end of the chair back frame.

Preferably, the supporting member includes a first connecting portion located at an upper portion of the supporting member, a third connecting portion located at a lower portion of the supporting member, and a second connecting portion for connecting the first connecting portion and the third connecting portion, the first connecting portion, the second connecting portion, and the third connecting portion are connected in a smooth transition manner, the supporting member is fixedly connected to the seat back or the seat back frame through the first connecting portion, and the supporting member is connected to a lower portion of the lumbar support through the third connecting portion.

Preferably, the first connecting portion and the second connecting portion are connected in a smooth manner at an obtuse angle, and the second connecting portion and the third connecting portion are connected in a smooth manner at an obtuse angle.

Preferably, a limiting bulge is arranged in front of the third connecting part of the supporting piece, a limiting hole matched with the limiting bulge is arranged at the lower part of the waist rest, and the supporting piece is in splicing fit with the waist rest; or, a limiting hole is formed in the third connecting portion of the supporting piece, a limiting protrusion matched with the limiting hole is arranged on the back face of the lower portion of the waist rest, and the supporting piece is matched with the waist rest in an inserting mode. The waist rest is connected with the supporting piece through the insertion fit, the structure is simple, and the supporting piece and the waist rest can be separated and combined conveniently.

Preferably, the back of the supporting piece is provided with a plurality of reinforcing ribs. The reinforcing ribs are arranged on the back face of the supporting piece, so that the strength of the supporting piece is increased, the supporting piece is further prevented from being broken due to long-term use or sudden acting force, and the service life of the supporting piece is prolonged.

Preferably, the upper part of the waist support is hinged with the chair back or the chair back frame. Therefore, the waist rest can be rotationally adjusted relative to the chair back or the chair back frame according to the acting force applied by the user and the height of the back of the user, and the requirements of different users are met.

Preferably, the waist rest comprises at least one transverse edge and two vertical edges respectively arranged at two ends of the transverse edge, and the vertical edges are in a forward convex arc shape. Thus, the lordotic arc of the lumbar support is complementary to the S-shape of the user 'S spine, allowing the lumbar support to more closely conform to the user' S spine, giving the user back support.

A chair comprising a chair back assembly as described above.

The utility model discloses owing to adopted above technical scheme, the elastic support piece who sets up the S type between the back of the chair and waist are leaned on, when the user lies and leans on by the waist, the waist leans on because of the atress produces the trend of backward motion, the power dispersion that support piece received is to whole support piece on, increase support piece' S life, and make support piece also be difficult to damage when receiving the effort is leaned on to the waist in the twinkling of an eye, and the waist leans on, support piece, connection structure between the back of the chair and the back frame is simple, easy dismounting, support piece sets up between the back of the chair and the waist, see from the back, support piece can not expose, back of the chair subassembly is whole pleasing to the eye.

Drawings

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

fig. 2 is a schematic structural view of another angle of the present invention;

fig. 3 is a schematic structural view of the supporter in fig. 1.

Reference numerals: 1. a chair back; 2. a waist support; 3. a support member; 31. a first connection portion; 32. a second connecting portion; 33. a third connecting portion; 4. a chair back frame.

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 "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any 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.

For convenience, the user leans against the waist as the front side, and the user leans against the back or the back side.

A chair includes a back assembly for a user to lean against, a seat for a user to sit on, and a base for supporting the seat. As shown in fig. 1 to 3, the back of the chair subassembly includes back of the chair 1, waist leans on 2 and back of the chair frame 4, back of the chair frame 4 integrated into one piece or fixed connection are in the below of back of the chair 1, and the back of the chair subassembly passes through back of the chair frame 4 and is connected with the seat support, the upper portion and the back of the chair 1 or back of the chair frame 4 swing joint of waist leans on 2, like this, the waist leans on can carry out the rotation adjustment for back of the chair and back of the chair frame according to the effort that the user applyed and the height at user back, satisfies different users' demand. The chair back support further comprises a support member 3 arranged between the chair back frame 1 and the waist support 2, in order to play a role of buffering and supporting, the support member 3 is an S-shaped elastic support member, and preferably, the support member 3 is an elastic sheet made of nylon, spring steel or other elastic materials. The upper portion and the backrest frame 1 fixed connection of support piece 3, the lower part and the waist of support piece 3 lean on the sub-unit connection of 2, waist leans on 2 relative backrest frame 1 and rotates from top to bottom and carries out elastic support through support piece 3 to waist leans on 2, provides the elasticity that resets for the rotation around waist leans on 2.

When a user lies on the waist support, the waist support has a tendency of moving backwards due to stress, the support piece is stressed to generate elastic deformation to support the waist support, and the stress on the support piece is dispersed to the whole support piece due to the S-shaped elastic support piece, so that the service life of the support piece is prolonged, and the support piece is not easy to damage under the action of instant waist support force; when the user is far away from the waist rest, the waist rest is reset under the elastic action of the supporting piece. And because the utility model provides a support piece sets up between back of the chair frame and waist leans on, has avoided support piece to expose at the back of the chair frame, is convenient for wrap the screen cloth outside the back of the chair frame, sees more pleasing to the eye from the back of the chair frame like this.

The upper part of the waist support 2 is movably connected with the lower end of the chair back 1; or the upper part of the waist rest 2 is movably connected with the upper end of the chair back frame 4. The position of the waist support 2 is set, so that the chair back 1 and the chair back frame 4 can be hollow frames or can be filled integrally, and the structure is simpler.

The utility model discloses in, support piece 3 is including the first connecting portion 31 that is located support piece 3 upper portion, the third connecting portion 33 that is located support piece 3 lower part and the second connecting portion 32 that is used for connecting first connecting portion 31 and third connecting portion 33, first connecting portion 31, second connecting portion 32 and third connecting portion 33 slick and sly connect and integrated into one piece, support piece 3 through first connecting portion 31 and back of the chair 1 or back of the chair frame 4 fixed connection, support piece 3 through third connecting portion 33 and the sub-unit connection of waist by 2. The first connecting portion 31 and the second connecting portion 32 are connected in a smooth manner at an obtuse angle, and the second connecting portion 32 and the third connecting portion 33 are connected in a smooth manner at an obtuse angle. In order to increase the strength of the supporting member 3, further prevent the supporting member 3 from being broken due to long-term use or sudden action force, and increase the service life of the supporting member 3, the back surface of the supporting member 3 is provided with a plurality of reinforcing ribs.

The utility model discloses in, support piece 3's first connecting portion 31 passes through bolt fixed connection on the back of the chair 1 or back of the chair frame 4, can also be equipped with on the back of the chair 1 or back of the chair frame 4 with support piece 3's first connecting portion 31 assorted recess for whole first connecting portion 31 and the contact of the back of the chair 1 or back of the chair frame 4, support piece 3 and the back of the chair 1 or back of the chair frame between connection structure is simple like this, easy dismounting, area of contact is bigger moreover, and the cushioning effect is better.

Preferably, the third connecting portion 33 of the supporting member 3 is fixedly or movably connected with the lumbar support 2. In this embodiment, a limiting protrusion is disposed in front of the third connecting portion 33 of the supporting member 3, a limiting hole matched with the limiting protrusion is disposed at the lower portion of the lumbar support 2, and the supporting member 3 is in plug-in fit with the lumbar support 2; or, a limit hole is arranged on the third connecting part 33 of the support member 3, a limit protrusion matched with the limit hole is arranged on the back surface of the lower part of the waist rest 2, and the support member 3 is in plug-in fit with the waist rest 2. And the front of the third connecting part 33 of the support member 3 is completely contacted with the back of the lower part of the lumbar support 2, so that the connection structure of the lumbar support 2 and the support member 3 is simple, the assembly and the disassembly are convenient, the contact area is larger, and the buffering effect is better.

The utility model discloses in, the waist leans on 2 and includes that at least one horizontal limit and two set up respectively in the perpendicular limit at horizontal limit both ends. In one embodiment, the waist rest 2 is a U-shaped structure with an open upper end, and the waist rest 2 is movably connected with the middle part of the chair back frame 1 to form a square-shaped structure; in another embodiment, the lumbar support 2 is a full square-shaped structure. Preferably, the upper part of the lumbar support 2 is hinged with the chair back 1 or the chair back frame 4 through a connecting column, and the connecting column can be independent or can be fixedly arranged on the upper part of the lumbar support 2 or the chair back 1/the chair back frame 4. Of course, the upper part of the lumbar support 2 and the chair back 1 or the chair back frame 4 can also be connected through a pressure spring or other rotating elements.

The peripheries of the chair back 1, the chair back frame 4 and the waist support 2 are coated with elastic cloth, and in order to further increase the comfort of the chair, the chair back 1 and the waist support 2 can also be filled with elastic materials.

Preferably, the vertical edges are in a forward convex arc shape, so that after the periphery of the lumbar support 2 is coated with the elastic cloth, the forward convex arc shape of the lumbar support 2 is complementary with the S shape of the spine of the user, so that the lumbar support 2 is more fit with the spine of the user, the user is provided with complete back support, and the spine of the user is protected.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "one implementation," "a specific implementation," "other implementations," "examples," "specific examples," 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, implementation, 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 above may also be combined in any suitable manner in any one or more of the embodiments, examples, or examples. The present disclosure also includes any one or more of the specific features, structures, materials, or characteristics described above, either individually or in any combination.

Although the embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and those skilled in the art can make changes, modifications, substitutions, variations, deletion of partial features, addition of features or re-combination of features without departing from the spirit and scope of the present invention, and any simple modification, equivalent change and modification made to the above embodiments according to the innovative principles of the present invention are all within the scope of the present invention.

Claims (8)

1. The utility model provides a back of chair subassembly, includes back of the chair (1), waist by (2) and back of the chair frame (4), back of the chair frame (4) integrated into one piece or fixed connection are in the below of back of the chair (1), the upper portion and back of the chair (1) or back of the chair frame (4) swing joint that the waist leaned on (2), its characterized in that still leans on support piece (3) between (2) including setting up back of the chair (1) and waist, support piece (3) are S type elastic support piece, the upper portion and back of the chair (1) or back of the chair frame (4) fixed connection of support piece (3), the lower part and the waist of support piece (3) lean on the sub-unit connection of (2), the waist leans on back of the chair (2) relative back of the chair (1) to rotate from top to bottom and carry out elastic support to waist by (2) through support piece (3).

2. The chair back assembly according to claim 1, wherein the supporting member (3) comprises a first connecting portion (31) located at the upper part of the supporting member (3), a third connecting portion (33) located at the lower part of the supporting member (3), and a second connecting portion (32) for connecting the first connecting portion (31) and the third connecting portion (33), the first connecting portion (31), the second connecting portion (32) and the third connecting portion (33) are smoothly and transitionally connected, the supporting member (3) is fixedly connected with the chair back (1) or the chair back frame (4) through the first connecting portion (31), and the supporting member (3) is connected with the lower part of the lumbar support (2) through the third connecting portion (33).

3. A chair back assembly according to claim 2, wherein the first connecting portion (31) is smoothly connected to the second connecting portion (32) at an obtuse angle, and the second connecting portion (32) is smoothly connected to the third connecting portion (33) at an obtuse angle.

4. The chair back component of claim 2, wherein a limit protrusion is arranged in front of the third connecting part (33) of the support member (3), a limit hole matched with the limit protrusion is arranged at the lower part of the waist rest (2), and the support member (3) is matched with the waist rest (2) in an inserting way; or, a limiting hole is formed in the third connecting portion (33) of the supporting piece (3), a limiting protrusion matched with the limiting hole is arranged on the back face of the lower portion of the waist rest (2), and the supporting piece (3) is matched with the waist rest (2) in an inserting mode.

5. A chair back assembly according to claim 1, wherein the back of the support member (3) is provided with a plurality of ribs.

6. A chair back assembly according to claim 1, wherein the upper part of the lumbar support (2) is hinged to the chair back (1) or to the chair back frame (4).

7. The chair back assembly of claim 1, wherein the lumbar support (2) comprises at least one lateral side and two vertical sides disposed at opposite ends of the lateral side, the vertical sides being in the shape of a forward convex arc.

8. A chair comprising a chair back assembly as claimed in any one of claims 1 to 7.

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