CN215226137U - Chair and chair back assembly thereof - Google Patents

Abstract

The utility model discloses a chair and a chair back component thereof, comprising a chair back, a waist rest and a chair back frame, wherein the chair back frame is connected below the chair back, the upper part of the waist rest is connected with the chair back or the chair back frame, a support piece is arranged between the chair back and the waist rest, the support piece is an S-shaped elastic support piece, the upper part of the support piece is fixedly connected with the chair back or the chair back frame, the lower part of the support piece is connected with the lower part of a bottom frame, the waist rest rotates up and down relative to the chair back and elastically supports the waist rest through the support piece; the waist leans on including the underframe and be used for supporting the first piece and the second of leaning on of waist and lean on the piece, first piece and the second of leaning on the piece and respectively fixed the setting in the left and right sides that the waist leaned on. In the technical scheme, the S-shaped elastic supporting piece is arranged, so that the supporting piece in the chair back component is not easy to damage, the waist rest, the supporting piece, the chair back and the chair back frame are simple in connecting structure and convenient to disassemble and assemble, the supporting piece is arranged between the chair back and the waist rest, and the chair back component is overall attractive.

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 attractive when viewed from the back of the chair;

4. in the chair, the waist rest is supported only through the elastic rod, when the waist of a user contacts the waist rest and shakes the waist rest leftwards and rightwards, the waist rest and the elastic rod are easy to break, the back of the user cannot be completely attached and supported, and the use feeling is poor.

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:

a chair back component comprises a chair back, a waist rest and a chair back frame, wherein the chair back frame is integrally formed or fixedly connected below the chair back, the upper part of the waist rest is movably connected with the chair back or the chair back frame, a supporting piece is arranged between the chair back and the waist rest, the supporting piece is an S-shaped elastic supporting piece, the upper part of the supporting piece is fixedly connected with the chair back or the chair back frame, the lower part of the supporting piece is connected with the lower part of the waist rest, and the waist rest rotates up and down relative to the chair back and elastically supports the waist rest through the supporting piece; the waist leans on including the underframe and be used for supporting the first piece and the second of leaning on of waist and lean on the piece, first piece and the second of leaning on the piece and respectively fixed the setting in the left and right sides that the waist leaned on. When the user lies and leans on the waist to lean on, thereby the waist can laminate completely first leaning on piece and second and lean on the piece to obtain complete support, the use is felt better, lean on because of the atress produces the trend of rearward movement, because support piece is S type elastic support piece, so the power that support piece received disperses on whole support piece, make support piece' S life lengthen, and not fragile when receiving the transient waist and lean on the effort, support piece sets up between the back of the chair and the waist, from the back, support piece can not expose, the back of the chair subassembly is whole pleasing to the eye.

Preferably, the bottom frame comprises a bottom frame body and a first connecting edge vertically arranged in the middle of the bottom frame, and the first leaning piece and the second leaning piece are respectively arranged on the left side and the right side of the first connecting edge. Through set up first connection limit on the underframe, increase the intensity that the waist leaned on to user's waist can lean on the range of rocking about and big and difficult fracture.

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

Preferably, a connecting piece is further arranged in front of the first connecting edge on the bottom frame, and one side, close to the first connecting edge, of the first leaning piece and the second leaning piece is pressed against the connecting piece. The strength of the bottom frame is further increased by arranging the connecting piece, and the shaking amplitude of the waist rest is increased.

Preferably, the middle part of the connecting piece is provided with an upward arc-shaped bulge, and the first leaning piece and the second leaning piece are respectively propped against the left side and the right side of the arc-shaped bulge in the connecting piece. Like this, lean on when the user leans on the right-left rocking at the waist, the arc arch can play the left and right sides of buffering on the connecting piece, increases the intensity that the waist leaned on to, because there is the clearance between connecting piece and the underframe, the connecting piece has certain deformation space, and the user leans on and the bracing piece is difficult for the fracture when the user leans on at the right-left rocking waist, and the use is felt better.

Preferably, the bottom frame in the lumbar support is in a shape with two raised sides and a concave middle part. Therefore, the waist support can completely wrap the waist of the user and provide the user with comprehensive waist support.

Preferably, the support member includes a first connection portion located at an upper portion of the support member, a third connection portion located at a lower portion of the support member, and a second connection portion for connecting the first connection portion and the third connection portion, the first connection portion, the second connection portion, and the third connection portion are in smooth transition connection, the support member is fixedly connected with the seat back or the seat back frame through the first connection portion, and the support member is connected with a lower portion of the bottom frame through the third connection 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 bottom frame, and the supporting piece is in splicing fit with the waist rest; or, a third connecting part of the support piece is provided with a limiting hole, the back surface of the lower part of the bottom frame is provided with a limiting bulge matched with the limiting hole, and the support piece is matched with the waist rest in an inserting way. 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 middle bottom frame 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.

A chair comprising a chair back assembly as described above.

The utility model discloses owing to adopted above technical scheme, through leaning on at the waist to set up first by a and the second leans on the piece, 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 the waist, thereby the waist leans on the piece to obtain complete support because of laminating first by a and the second completely, the use is felt better, and the intensity of underframe has been increased to a certain extent, lean on the trend that produces the backward movement because of the atress when the waist, the power dispersion that support piece received is to whole support piece, increase support piece' S life, and even make support piece also be difficult to damage when receiving the waist in the twinkling of an eye and lean on the effort, 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, from the back, support piece can not expose, the back of the chair subassembly is whole pleasing to the eye.

Drawings

FIG. 1 is a schematic view of a chair back assembly according to the present invention;

FIG. 2 is a schematic view of another angle of FIG. 1;

FIG. 3 is a schematic view of the lumbar support of FIG. 1;

FIG. 4 is a schematic view of the lumbar support of FIG. 3 with the first and second support members removed;

FIG. 5 is a schematic view of the structure of the connector of FIG. 3;

fig. 6 is a schematic structural view of the supporter in fig. 2.

Reference numerals: 1. a chair back; 2. a waist support; 21. a bottom frame; 211. a first connecting edge; 22. a first rest member; 23. a second rest member; 24. a connecting member; 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's side leaning on the waist is used as the front side, and the other side is used as the back side or the back side.

A chair includes a back assembly for a user to rest upon, a seat for a user to sit upon, and a base for supporting the seat. As shown in fig. 1 to 6, 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, as preferred, the upper portion and the back of the chair 1 or back of the chair frame 4 of waist leans on 2 are articulated, and like this, the waist leans on can rotate the 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. Support piece 3 is equipped with between back of the chair 1 and the lumbar support 2, in order to play the cushioning support effect, support piece 3 is S type elastic support piece, as preferred, support piece 3 is the flexure strip of being made by nylon, spring steel or other elastic material. The upper portion of support piece 3 and back of the chair 1 or back of the chair frame 4 fixed connection, the lower part of support piece 3 and the sub-unit connection of waist support 2, waist support 2 rotates about 1 relative back of the chair and carries out elastic support to waist support 2 through support piece 3. The lumbar support 2 comprises a bottom frame 21, a first support member 22 and a second support member 23 for supporting the waist, wherein the first support member 22 and the second support member 23 are respectively fixedly arranged at the left side and the right side of the lumbar support 2.

When a user lies on the waist support, the waist can be completely attached to the first support piece and the second support piece so as to obtain complete support, so that the waist support has a tendency of moving backwards due to stress, and the stress on the support piece is dispersed to the whole support piece because the support piece is an 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.

As shown in fig. 3 to 5, preferably, the bottom frame 21 includes a bottom frame body and a first connecting edge 211 vertically fixed at the middle of the bottom frame 21, the first connecting edge 211 is fixedly connected with the bottom frame body or integrally formed, the first leaning piece 22 and the second leaning piece 23 are respectively arranged at the left and right sides of the first connecting edge 211, so that the strength of the bottom frame 21 can be increased, the waist of a user can be greatly and not easily broken when the waist leans on the waist, the use feeling is better, and the upper part of the supporting rod, the lower part of the supporting rod and the first connecting edge form a triangle-like structure, so that the supporting strength of the supporting rod to the waist lean on the waist is higher, and the left and right shaking range of the waist lean on the waist is larger.

The preceding connecting piece 24 that still is equipped with of first connecting edge 211 on the underframe 21, as preferred, connecting piece 24 is the plastics connecting piece, and the first 22 and the second of leaning on leans on one side that is close to first connecting edge 211 to support and press on connecting piece 24 in the piece 23, further increases the intensity of underframe 21 through setting up connecting piece 24 to it is great to make the range that the waist leans on 2 and rocks about, and the user rocks the waist and leans on not fragile when.

The middle part of the connecting piece 24 is provided with an upward arc-shaped bulge, and the first leaning piece 22 and the second leaning piece 23 respectively lean against the left side and the right side of the arc-shaped bulge in the connecting piece 24. Like this, the arc arch provides the certain deformation space of connecting piece 24, leans on when the right-left rocking at the waist at the user, and the arc arch can play the buffering about on the connecting piece, further increases the intensity that the waist leaned on to, the arc arch makes and has the clearance between connecting piece and the underframe, and first leaning on piece and second to lean on a range of right-left rocking bigger, and the use sense is better.

The utility model discloses in, underframe 21 among the waist leaned on 2 is both sides perk, the sunken shape in middle part, and the back that can better wrap up the user is leaned on to the waist like this, gives the complete support in user's back. Preferably, the first and second leaning pieces 22 and 23 are adapted to the shape of the bottom frame 21. Preferably, the upper part of the bottom frame 21 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 bottom frame 21 in the lumbar support 2 and the seat back 1 or the seat back frame 4 may also be connected by a compression spring or other rotating member.

Elastic cloth is coated on the peripheries of the chair back 1, the chair back frame 4, the first leaning piece 22 and the second leaning piece 23.

The upper part of the bottom frame 21 in the waist rest 2 is movably connected with the lower end of the chair back 1; or the upper part of the bottom frame 21 in 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.

In the present invention, as shown in fig. 6, the support member 3 includes a first connecting portion 31 located on the upper portion of the support member 3, a third connecting portion 33 located on the lower portion of the support 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 connected in a smooth transition manner, the support member 3 is fixedly connected to the seat back 1 or the seat back frame 4 through the first connecting portion 31, and the support member 3 is connected to the lower portion of the bottom frame 21 through the third connecting portion 33. 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 bottom frame 21, and the supporting member 3 is in plug-in fit with the lumbar support 2; or, a limit hole is formed in the third connecting portion 33 of the support member 3, a limit protrusion matched with the limit hole is formed in the back face of the lower portion of the bottom frame 21, 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.

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 (10)

1. A chair back assembly comprises a chair back (1), a waist support (2) and a chair back frame (4), wherein the chair back frame (4) is integrally formed or fixedly connected below the chair back (1), the upper part of the waist support (2) is movably connected with the chair back (1) or the chair back frame (4), the chair back assembly is characterized in that a support piece (3) is arranged between the chair back (1) and the waist support (2), the support piece (3) is an S-shaped elastic support piece, the upper part of the support piece (3) is fixedly connected with the chair back (1) or the chair back frame (4), the lower part of the support piece (3) is connected with the lower part of the waist support (2), and the waist support (2) rotates up and down relative to the chair back (1) and elastically supports the waist support (2) through the support piece (3); the waist support (2) comprises a bottom frame (21), a first support piece (22) and a second support piece (23) which are used for supporting the waist, wherein the first support piece (22) and the second support piece (23) are respectively fixedly arranged at the left side and the right side of the waist support (2).

2. A chair back assembly according to claim 1, wherein the base frame (21) comprises a base frame body and a first connecting edge (211) vertically disposed in the middle of the base frame (21), and the first backrest member (22) and the second backrest member (23) are disposed on the left and right sides of the first connecting edge (211), respectively.

3. A chair back assembly according to claim 2, wherein the frame (21) is further provided with a connecting member (24) in front of the first connecting edge (211), and wherein the first (22) and second (23) rest members bear against the connecting member (24) on the side thereof adjacent the first connecting edge (211).

4. A chair back assembly according to claim 3, wherein the middle of the connecting member (24) is provided with an upwardly curved protrusion, and the first (22) and second (23) rest members are respectively pressed against the left and right sides of the curved protrusion in the connecting member (24).

5. A chair back assembly according to claim 2, wherein the base frame (21) of the lumbar support (2) is of a two-sided raised, centre-recessed shape.

6. The chair back assembly of claim 1, wherein the support member (3) comprises a first connecting portion (31) at an upper portion of the support member (3), a third connecting portion (33) at a lower portion of the support 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 connected, the support member (3) is fixedly connected with the chair back (1) or the chair back frame (4) through the first connecting portion (31), and the support member (3) is connected with a lower portion of the bottom frame (21) through the third connecting portion (33).

7. The chair back assembly of claim 6, 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.

8. The chair back component of claim 6, wherein the front surface of the third connecting part (33) of the supporting piece (3) is provided with a limiting bulge, the lower part of the bottom frame (21) is provided with a limiting hole matched with the limiting bulge, and the supporting piece (3) is matched with the waist rest (2) in an inserting way; or, be equipped with spacing hole on third connecting portion (33) of support piece (3), the back of underframe (21) lower part be equipped with spacing hole matched with is spacing protruding, support piece (3) and waist lean on (2) cooperation of pegging graft.

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

10. A chair comprising a chair back assembly as claimed in any one of claims 1 to 9.

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