CN209950802U

CN209950802U - Seat backrest, novel backrest and seat

Info

Publication number: CN209950802U
Application number: CN201920187201.5U
Authority: CN
Inventors: 何基; 金明华
Original assignee: UE Furniture Co Ltd
Current assignee: UE Furniture Co Ltd
Priority date: 2019-02-03
Filing date: 2019-02-03
Publication date: 2020-01-17
Anticipated expiration: 2029-02-03

Abstract

The utility model relates to a seat backrest, a novel backrest and a seat, which comprises a back support piece, a support frame used for supporting the back support piece, an elastic piece which is arranged between the side part of the first back support piece and the side part of the first support frame and can be bent and deformed when being stressed, and a first support body which is arranged between the side part of the first back support piece and the side part of the first support frame; the utility model provides a seat, includes the seat with the lower part of first support frame lateral part, the lower part fixed connection's of second support frame lateral part seat, compares with prior art, the utility model discloses set up the elastic component on back upper portion, can make back support piece left and right sides non-resistance, the deformation degree of freedom is very high, has strengthened vertical ascending stability of user's backbone and support nature, and support frame and first supporter can prevent the excessive deformation and the slope of soft back again, and the travelling comfort is good, and the security is good.

Description

Seat backrest, novel backrest and seat

Technical Field

The utility model belongs to the technical field of furniture equipment, especially, relate to a seat back, novel back and seat.

Background

The flexibility of seat back on the existing market, the travelling comfort is relatively poor, can not take place corresponding change according to user's position of sitting, the user of being not convenient for side talk, get action such as thing, also can arouse back fatigue often after the user sits for a long time, the seat is as the conventional article, especially office chair that office workers commonly used, how effectively alleviate back fatigue and pressure after the user sits for a long time, improve the travelling comfort of seat back, be one of the strong demands of existing market to seat product optimization, above-mentioned technical problem is waited for and is solved urgently.

US6709060 discloses a seat back for increasing back support, stability and comfort, which comprises a back and a support frame arranged at the back side of the back, a plurality of connecting blocks are arranged between the back and the support frame, but the connecting blocks are all in a rod-shaped structure and are respectively distributed at three positions of the upper side, the left side and the right side of the support frame to form point type support, the distance between the supporting points is relatively dispersed, meanwhile, the supporting points are far away from the outer edge of the back, the support strength is poor, if the seat back is applied to a backrest with large deformation and softness, the deformation space and softness are also small, the comfort is still poor, the seat back does not meet the requirements of ergonomics, the whole back is close to rigidity and does not deform stress, the seat back has poor adaptability to people with different body types, in addition, spare and accessory parts are too many, the production and installation are inconvenient, and the seat back has a large improvement.

In order to overcome the not enough of existence among the above-mentioned prior art, the utility model provides a can change according to user's health position of sitting and change, the high just strong support nature of deformation degree of freedom has the backrest and the seat of advantages such as flexibility, travelling comfort concurrently.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the present invention provides a backrest, a novel backrest and a seat, which can change according to the sitting posture of the user, have high degree of freedom in deformation and strong support, and have the advantages of flexibility, comfort and the like.

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

a seat back, comprising:

a back support having a first back support side, a second back support side, a back support upper portion, a back support lumbar portion;

a support frame to support the back support, the support frame being substantially rigid and having a first support frame side, a second support frame side, and a support frame upper;

at least 3 elastic members, the elastic members are transversely arranged in a row and are respectively connected between the upper part of the back support member and the upper part of the support frame, each elastic member comprises a front connecting part connected with the upper part of the back support member, a rear connecting part connected with the upper part of the support frame and a bending part connected between the front connecting part and the rear connecting part, and the elastic members can be bent and deformed when being stressed;

a first support that is substantially rigid and disposed between the first back support side and the first support frame side.

The utility model comprises a back support piece, a support frame made of rigid material for supporting the back support piece, a row of elastic pieces connected between the upper part of the back support piece and the upper part of the support frame, and a first support body connected between the side part of the first back support piece and the side part of the first support frame, wherein the shape of the bending part can be a straight plate shape with or without bending shape or both the shapes can be used, and the bending part can be bent and deformed as long as pressure is generated on the elastic pieces; when a user sits on the seat in different sitting postures, different pressures can be brought to the back supporting piece, the back supporting piece is correspondingly deformed and changed in angle inclination due to the bending deformation of the elastic piece, the wrapping feeling is strong, the comfortableness is better, the fatigue is effectively relieved, meanwhile, the first supporting body and the supporting frame can prevent the back supporting piece from excessively deforming and inclining, and the risk of toppling is avoided; the elastic pieces are transversely arranged in a row, so that the stability of the left side and the right side of the back supporting piece during deformation is ensured, the firmness of the elastic pieces is also ensured, the risk of backward tilting is avoided, and the backward tilting supporting force is increased; furthermore, the utility model discloses set up the elastic component on back upper portion, and not set up in back support piece left and right sides, can make back support piece left and right sides resistanceless, back support piece's deformation degree of freedom is very high, back support piece left and right sides edge deformation range is bigger from beginning to end, be more favorable to the user to the position of sitting transform in left and right directions, for example the action such as side body talk, get the thing, simultaneously, make the support nature of back support piece part near user's shoulder stronger, avoid the excessive hypsokinesis of position above the user's waist, difficult emergence hypsokinesis dangerous, strengthened stability and support nature in user's backbone is vertical, the travelling comfort is better, and the security is better; the support frame is approximately rigid, namely the support frame has higher rigidity and plays a supporting role or is directly rigid, and the deformation of the support frame is small or does not deform when a human body leans against the backrest and then conducts pressure to the support frame to generate pressure; the term "the first support body is substantially rigid" means that the first support body has a high degree of rigidity to support or is directly rigid, and the first support body has a small deformation amount or does not deform when a human body leans against the backrest and then conducts pressure to the first support body to generate pressure.

Preferably, the back support further comprises a second support body arranged symmetrically to the first support body, which is substantially rigid and arranged between the second back support side and the second support frame side.

The second support body and the first support body are symmetrically arranged along the vertical center line of the backrest, so that the stability of the backrest support is enhanced.

Preferably, the number of the elastic members is greater than or equal to 5, and the interval between the elastic members is uniformly arranged between the upper portion of the back support and the upper portion of the support frame.

The setting is greater than 5 even elastic component in interval, can further avoid bringing the danger of heeling, increases the holding power when leaning on the user.

Preferably, the elastic piece and the upper part of the support frame are fixedly connected in a detachable mode.

The elastic part and the support frame are made of different materials, the elastic part is made of flexible materials, the support frame is made of rigid materials, the detachable fixed connection mode is more convenient, and meanwhile, the die sinking cost is reduced, and the die sinking device is convenient to disassemble, assemble, maintain, transport and store.

Preferably, the first support is integrally formed with the first back support side.

The overall firmness between the first supporting body and the side part of the first back supporting piece is improved, and the service life is prolonged; when a human body sits on the seat to indirectly generate pressure on the first supporting body, the first supporting body basically does not deform or deforms a little, so that the overall stability and safety of the back supporting piece are ensured, and correspondingly, the second supporting body and the side part of the second back supporting piece are integrally formed; the first support body has higher rigidity degree to play a supporting role or is directly rigid, and when a human body leans against the backrest and conducts pressure to the first support body to generate pressure, the deformation of the first support body is small or is not deformed; in addition, first supporter and first back support lateral part can adopt the flexible material integrated into one piece of toughening, thereby first supporter can compare first back support lateral part thick and strong difficult emergence deformation can, correspondingly, also integrated into one piece between second supporter and the second back support lateral part.

Preferably, the first support body and the side part of the first support frame are fixedly or rotatably connected in a detachable mode.

The first support body and the side part of the first support frame are made of different materials, the first support body is made of flexible materials, the support frame is made of rigid materials, the detachable connection mode is more convenient, and meanwhile, the die sinking cost is favorably reduced, and the disassembly, the assembly, the maintenance, the transportation and the storage are convenient; the connection mode comprises a fixed connection mode or a rotary connection mode, the connection strength of the first support body and the side part of the first support frame can be guaranteed, and correspondingly, the detachable fixed connection or the rotary connection mode is also adopted between the second support body and the side part of the second support frame.

Preferably, the elastic members are parallel to each other, and the longitudinal section of each elastic member is in any one or any combination of a straight shape, a Y shape, an L shape, a T shape, a V shape and a Z shape.

The elastic piece is flat as a whole, so that the bending deformation of the elastic piece is facilitated, the deformation amount is large, and the deformation effect of the back support piece is better; particularly, the L-shaped, T-shaped, V-shaped, Y-shaped and Z-shaped shapes are adopted, and the reinforcing parts at the connecting positions among the elastic piece, the back supporting piece and the supporting frame are embodied.

Preferably, the elastic part is a straight elastic wing strip, the width of the elastic wing strip is 0.8-2 cm, and the length of the elastic wing strip is 2.5-5 cm.

The width setting is favorable for simultaneously ensuring the strength and deformation of the elastic piece.

Preferably, a reinforced part is arranged at the joint between the front connecting part of the elastic part and the upper part of the back support part, and the reinforced part and the elastic part are integrally molded by adopting a toughened flexible material.

Due to the high frequency of the bending change of the elastic piece, the single thin elastic piece is easy to break, the service life is short, the design of the reinforcing part can effectively enhance the connection strength between the elastic piece and the upper part of the back supporting piece, the integral firmness of the back supporting piece is further improved, and the service life is prolonged.

Preferably, the front connecting part, the bending part and the rear connecting part of the elastic piece are integrally molded by adopting toughened flexible materials.

The integral forming ensures the integral firmness degree and the service life of the elastic piece.

Preferably, the front connecting part and the bending part of the elastic part and the rear connecting part and the bending part of the elastic part are fixedly connected in a detachable mode.

The detachable fixed connection mode is convenient for the maintenance and the replacement of parts.

Preferably, the front connecting part of the elastic member is located at a higher level than the rear connecting part.

The elastic piece is beneficial to bending deformation.

Preferably, when the elastic member is in a free state, an included angle between the elastic member and a horizontal plane is 30-80 degrees.

The elastic piece is beneficial to bending deformation, the deformation amplitude is large, and the comfort is better.

Preferably, the support frame is positioned at the rear side of the back support, the support frame comprises a first upright post, a second upright post and a support frame top cross bar positioned at the upper edge of the support frame, and the back support comprises a back support top cross bar positioned at the upper edge of the back support; the front connecting part of the elastic part is connected to the top cross rod of the back support part, and the rear connecting part of the elastic part is connected to the top cross rod of the support frame.

The elastic part is connected between the cross bar at the top of the back support part at the upper edge of the back support part and the cross bar at the top of the support frame at the upper edge of the support frame, so that the deformation freedom of the left side and the right side of the back support part is higher, and meanwhile, the back support part close to the shoulders of a user has stronger support performance and is not easy to have the risk of backward tilting; wherein the first upright post is a side part of the first support frame, and the second upright post is a side part of the second support frame.

Preferably, the first upright column, the cross rod at the top of the support frame and the second upright column are sequentially connected to form a U shape.

The supporting frame structure of U type form can support back support piece's coverage is wider, and the support effect is better, and the security is higher.

Preferably, the support frame further comprises a support frame bottom cross rod, and the first stand column, the support frame top cross rod, the second stand column and the support frame bottom cross rod are sequentially connected to form a closed support frame.

Not only can make the coverage of supporting back support piece wider, can strengthen the firm degree of support frame body simultaneously.

Preferably, the upper part of the support frame is provided with a notch, and the rear connecting part of the elastic element is inserted into the notch to realize the plug-in connection between the upper part of the support frame and the elastic element.

The plug-in connection mode is adopted, the structure is simple, the number of parts is small, assembly is facilitated, and installation cost is reduced.

Preferably, the rear connecting part of the elastic part is provided with a fixing protrusion, the support frame comprises a support frame main body and a support frame splicing part spliced on the support frame main body, a first groove and a second groove used for containing the fixing protrusion are formed in the support frame main body and the support frame splicing part respectively, the fixing protrusion is contained in the first groove and the second groove, and the elastic part is fixedly connected to the upper part of the support frame after the support frame main body and the support frame splicing part are spliced.

The elastic piece and the support frame are fixedly connected in an inserting mode of the fixing protrusion, the first groove and the second groove, the structure is simple, parts are few, assembly is facilitated, and installation cost is reduced; wherein the splicing of the support frame main body and the support frame splicing piece realizes the splicing of the first groove and the second groove.

Preferably, the support frame main body is provided with a plurality of insertion grooves, and the support frame splicing pieces are provided with a plurality of insertion tongues; the splicing tongue is inserted into the splicing groove to realize splicing connection between the support frame main body and the support frame splicing piece, and then the screw is locked, and the screw is externally connected with a decorating piece for covering the screw.

Similarly, splicing is realized by adopting a splicing connection mode, the structure is simple, parts are few, assembly is facilitated, and the installation cost is reduced; the firmness of connection between the support frame main body and the support frame splicing piece is further guaranteed through the screw parts, and the appearance of the support frame is attractive and concise due to the decorating part.

Preferably, the fixing protrusion is provided at both side surfaces at one end of the elastic member.

The firmness and the stability of the connection of the two are ensured.

Preferably, a gap of 2cm to 6cm is left between the first back support side part and the first support frame side part, and the first support body is connected to the gap at the position of the lumbar support part of the back support.

Providing space for deformation of the back support, the first back support side, and the second back support side; correspondingly, a gap is reserved between the side part of the second back support and the side part of the second support frame, and the second support body is connected in the gap at the waist rest part of the back support.

Preferably, the first supporting body is of an arch-shaped hollow structure or a triangular-like hollow structure, a first connecting end a and a second connecting end a which are spaced up and down are formed at the connecting position of the first supporting body and the side part of the first back supporting body, and a third connecting end a is formed at the connecting position of the first supporting body and the side part of the first supporting frame.

The space is provided for deformation of the first back support piece side part and the second back support piece side part between the first connecting end A and the second connecting end A, a buffering area is formed, comfort is higher, meanwhile, the connection of the three connecting points of the first connecting end A, the second connecting end A and the third connecting end A forms an arch-shaped hollow structure or a triangular hollow structure, a triangular structure is basically formed, supporting strength is better compared with that of common point type supporting, and better rigid supporting is provided for the first back support piece side part and the second back support piece side part.

Preferably, the back support further comprises a back support lower portion; the first back support side edge, the back support upper edge, the second back support side edge and the back support lower edge are sequentially connected and closed to form a back support frame, the back support frame is approximately rigid, and a flexible net structure is arranged in the back support frame.

The back support piece frame is approximately rigid, namely the back support piece frame is small in deformation or basically does not deform, and the net-shaped structure comprises net cloth or an elastic hollow structure, so that the back support piece is larger in deformation, large in elasticity, stronger in wrapping feeling and more comfortable; particularly, the mesh-shaped area can be arranged in a plurality of rhombic hollow structures, particularly the height of the rhombuses is larger than the width of the rhombuses, so that the deformation amount of the back support piece in the left and right directions and the overall wrapping feeling of the back support piece are further improved, and meanwhile, the rhombuses on the upper part of the mesh-shaped area are larger than the rhombuses on the lower part of the mesh-shaped area, so that the support for the waist is facilitated.

Preferably, the back support further comprises a back support lower portion; the first back support side edge, the back support upper edge, the second back support side edge and the back support lower edge are sequentially connected and closed to form a back support frame, the back support frame is approximately flexible, and a flexible net structure is arranged in the back support frame.

The back support frame is approximately flexible, namely the back support frame has a certain deformation, so that the wrapping feeling is stronger, and the comfort is better; meanwhile, the net-shaped structure comprises mesh cloth or an elastic hollow structure, so that the back support piece has larger deformation, large elasticity, stronger wrapping feeling and higher comfort; particularly, the mesh-shaped area can be arranged in a plurality of rhombic hollow structures, particularly the height of the rhombuses is larger than the width of the rhombuses, so that the deformation amount of the back support piece in the left and right directions and the overall wrapping feeling of the back support piece are further improved, and meanwhile, the rhombuses on the upper part of the mesh-shaped area are larger than the rhombuses on the lower part of the mesh-shaped area, so that the support for the waist is facilitated.

Preferably, the back support frame is less flexible than the mesh structure.

Both guaranteed the support function of back support piece frame, can produce its self certain deformation again simultaneously, the parcel feels better.

A seat back, comprising:

the elastic pieces are transversely arranged in a row and are respectively connected between the upper part of the back support piece and the upper part of the support frame, each elastic piece comprises a front connecting part connected with the upper part of the back support piece, a rear connecting part connected with the upper part of the support frame and a bending part connected between the front connecting part and the rear connecting part, and the elastic pieces can be bent and deformed when being stressed;

a first support that is substantially rigid and disposed between the first back support side and the first support frame side; the first supporting body is of an arch-shaped hollow structure or a triangular-like hollow structure, a first connecting end A and a second connecting end A are formed at the connecting position of the first supporting body and the side part of the first back supporting body, and a third connecting end A is formed at the connecting position of the first supporting body and the side part of the first supporting frame.

In the utility model, when a user sits on the seat in different sitting postures, different pressures can be brought to the back supporting piece, the back supporting piece is correspondingly deformed and changed in angle inclination due to the bending deformation of the elastic piece, the wrapping feeling is strong, the comfort is better, and the fatigue is effectively relieved; meanwhile, the first supporting body and the supporting frame can prevent the excessive deformation and inclination of the back supporting piece, so that the falling danger is avoided, in addition, the plurality of elastic pieces are transversely arranged in a row, the stability of the left side and the right side of the back supporting piece during deformation is ensured, and the backward inclining supporting force is also increased; the elastic part is arranged at the upper part of the backrest, so that the left side and the right side of the back support part have no resistance and high deformation freedom degree, the sitting posture change of a user in the left and right directions is facilitated, meanwhile, the support of the back support part close to the shoulders of the user is stronger, and the longitudinal stability and the support of the spine of the user are enhanced; first supporter is the hollow out construction of arch shape or is class triangle-shaped hollow out construction, be first link A promptly, first back support piece lateral part between the second link A, second back support piece lateral part takes place to deform and provides the space, form the buffer area, the travelling comfort is more, hollow out construction has formed triangle-shaped's structure basically simultaneously, it is better to compare in its support intensity of common point type support, for first back support piece lateral part, second back support piece lateral part provides better rigid support, the too big deformation of back support piece on the left and right sides has been avoided, back support piece's stability has been guaranteed, safety, the supporting role of back support piece waist back. The shape of the bending part can be a bending shape or a straight plate shape, and the bending part can be bent and deformed only when pressure is generated on the elastic part; in addition, the support frame is substantially rigid, which means that the support frame has a high degree of rigidity to play a supporting role or is directly rigid, and when a human body leans against the backrest and conducts pressure to the support frame to generate pressure, the deformation of the support frame is small or does not deform; the term "the first support body is substantially rigid" means that the first support body has a high degree of rigidity to support or is directly rigid, and the first support body has a small deformation amount or does not deform when a human body leans against the backrest and then conducts pressure to the first support body to generate pressure.

Preferably, the first back support side part at least comprises a first softer back support and a first harder waist support in sequence from top to bottom, wherein the first waist support is positioned between the first connecting end a and the second connecting end a, and the first waist support does not deform or has a deformation amount lower than that of the first back support when being squeezed by external force.

Since the first lumbar side support is used to support the user's lumbar region, the first lumbar side support needs to have a lower amount of deformation than the first back side support, which effectively relaxes the user's lumbar region and is more comfortable, and correspondingly, the second lumbar side support does not deform or has a lower amount of deformation than the second back side support.

Preferably, the first back support side part at least comprises a first back support and a first waist support from top to bottom in sequence, wherein the first waist support is positioned between the first connecting end a and the second connecting end a; the first back side support and the first waist side support are rigid, and do not deform when being squeezed by external force.

Preferably, the first support frame side part is formed with a first bend bending inwards at the third connecting end a, the first support body is formed with a first convex part bending outwards at the third connecting end a, the first convex part and the first bend are connected with each other, and the first convex part is supported above the first bend.

Because first bending is bent to first waist side support, it is opposite with the pressure that the user leaned on backward, consequently embody the supporting role of support frame, first supporter to back support better, simultaneously, first bulge bearing has further embodied first support frame lateral part and has provided the holding power for back support piece in first bending top, has also guaranteed the fastness of connection between first bulge and the first bending, has also improved the stability behind the backward pressure testing of back support piece.

The overall firmness between the first supporting body and the side part of the first back supporting piece is improved, and the service life is prolonged; when a human body sits on the seat to indirectly generate pressure on the first supporting body, the first supporting body basically does not deform, so that the side part of the first back supporting piece and the back supporting piece are not excessively deformed, the integral stability and safety of the back supporting piece are ensured, and correspondingly, the second supporting body and the side part of the second back supporting piece are integrally formed; the degree of rigidity is higher to play a supporting role or the rigidity is direct, and when a human body leans against the backrest and conducts pressure to the first supporting body to generate pressure, the deformation of the first supporting body is small or is not deformed; in addition, first supporter and first back support lateral part can adopt the flexible material integrated into one piece of toughening, thereby first supporter can compare first back support lateral part thick and strong difficult emergence deformation can, correspondingly, also integrated into one piece between second supporter and the second back support lateral part.

The detachable fixed connection mode is adopted among different materials, so that the die sinking cost is reduced, and the disassembly, assembly, maintenance, transportation and storage are facilitated; correspondingly, the second support body and the side part of the second back support member adopt a detachable fixed connection or a rotatable connection mode.

Preferably, the first support body is provided with a first connecting lug, the side part of the first support frame is provided with a first connecting groove in inserted connection with the first connecting lug, and the first connecting lug is inserted into the first connecting groove and locked by a screw to realize connection between the first support body and the side part of the first support frame.

The connection mode of inserting connection and locking by screws is firmer, and the service life is prolonged.

Preferably, the plane where the first connecting lug is located and the plane where the first connecting groove is located are perpendicular to the curved surface where the lumbar support part of the back support is located.

When a user leans on the back support, the pressure applied to the back support is transmitted to the first connecting lug, the corresponding second connecting lug, the first connecting groove and the corresponding second connecting groove, and the pressure applied to the back support, namely the force applied to the side part of the first support frame and the side part of the second support frame, belongs to the stress in the vertical direction, so that the stress is more stable.

Preferably, the third connecting end a is located diagonally inward and rearward of the back support.

The back support piece is guaranteed not to be blocked when being deformed in the left and right sides.

Preferably, the back support frame is less flexible than the mesh structure.

A novel backrest comprises the seat backrest, wherein the elastic piece and the upper part of the back support piece are integrally formed.

The overall firmness of the elastic piece and the back support piece is improved, and the service life is prolonged.

A novel backrest comprises the seat backrest, wherein the elastic piece and the upper part of the back supporting piece are connected in a detachable fixed connection mode.

The detachable fixed connection mode is more convenient, and the mold opening cost is reduced, and the disassembly, assembly, maintenance, transportation and storage are convenient.

A seat comprises a seat part and the seat backrest or the novel backrest, wherein the lower part of the side part of the first support frame and the lower part of the side part of the second support frame are fixedly connected with the seat part.

The supporting function of the supporting frame to the back supporting piece is ensured.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model provides a can change according to user's health position of sitting and change, the high just strong support of deformation degree of freedom, have the backrest and the seat of advantages such as flexibility, travelling comfort concurrently. The utility model comprises a back support piece, a support frame made of rigid material for supporting the back support piece, a row of elastic pieces connected between the upper part of the back support piece and the upper part of the support frame, and a first support body connected between the side part of the first back support piece and the side part of the first support frame; when the user adopts different position of sitting to sit on the seat, can bring different pressure for back support piece, back support piece takes place deformation and angle slope change correspondingly because the bending deformation of elastic component, and the parcel is felt strong, and the travelling comfort is better, effectively alleviates fatigue, and simultaneously, first supporter and support frame can prevent back support piece's excessive deformation and slope, avoid bringing the danger of empting.

Meanwhile, the plurality of elastic pieces are transversely arranged in a row, so that the stability of the left side and the right side of the back supporting piece during deformation is ensured, the firmness of the elastic pieces is also ensured, the backward tilting danger can be avoided, and the backward tilting supporting force is increased; further, the utility model discloses set up the elastic component on back upper portion, and not set up in the back support piece left and right sides, can make the back support piece left and right sides resistanceless, back support piece's deformation degree of freedom is very high, the deformation range is bigger around the edge of back support piece left and right sides, more be favorable to the user at the ascending position of sitting transform of left and right sides, for example the side body conversation, get actions such as thing, and simultaneously, the support nature that makes the back support piece part near user shoulder is stronger, avoid the excessive hypsokinesis in position above the user's waist, difficult emergence hypsokinesis dangerous, user's spine vertically stability and support nature have been strengthened, the travelling comfort is better, and the security is better.

In addition, first link A, second link A, the connection of the three tie point of third link A forms the hollow out construction of arch shape or is a triangle-shaped hollow out construction, for first back support piece lateral part, the deformation takes place for the second back support piece lateral part provides the space, form the buffering area, the travelling comfort is more, and simultaneously, triangle-shaped's structure has been formed basically, it is better to compare in its support intensity of common point type support, for first back support piece lateral part, second back support piece lateral part provides better rigid support, the too big deformation of back support piece on the left and right sides has been avoided, back support piece's stability has been guaranteed, safety, the supporting role of back support piece lumbar support portion.

Drawings

Fig. 1 is a schematic structural view of a seat back and a seat according to embodiments 1 and 2;

FIG. 2 is another schematic view of the seat back and seat of embodiments 1 and 2;

FIG. 3 is a rear view schematic diagram of the seat back and the seat according to embodiments 1 and 2;

FIG. 4 is a schematic side view of the seat back and seat of embodiments 1 and 2;

FIG. 5 is an enlarged view of portion A of FIG. 4;

FIG. 6 is a schematic structural view of the back support, the elastic member, the first support and the second support integrally formed in accordance with example 1;

FIG. 7 is an enlarged view of the portion B of FIG. 6;

FIG. 8 is a schematic structural view of a main body of a stand according to embodiment 1;

FIG. 9 is an enlarged view of the portion C of FIG. 8;

FIG. 10 is a schematic view of the construction of a splicing part of the support frame of example 1;

FIG. 11 is an enlarged view of the portion D of FIG. 10;

FIG. 12 is a schematic structural diagram of the split joint of the support frame body and the support frame splicing piece of the support frame in the embodiment 1;

FIG. 13 is an enlarged view of section E of FIG. 12;

FIG. 14 is a schematic top view of the back support according to embodiment 1.

Detailed Description

The following describes in detail an embodiment of the present invention with reference to the drawings.

The present embodiment relates to reference orientations of components such as a rear side, an upper portion, a lower portion, and the like, which are described in a normal use state in which a user is seated on a seat.

Example 1

A seat back, as shown in fig. 1-14, comprising:

a back support 100, said back support 100 having a first back support side 110, a second back support side 120, a back support upper portion 130, a back support lumbar portion 140, a back support lower portion 160; the first back support side 110 edge, the back support upper 130 edge, the second back support side 120 edge and the back support lower 160 edge are connected and closed in sequence to form a back support frame, the back support frame is approximately flexible, a flexible mesh structure 600 is arranged in the back support frame, and the flexibility degree of the back support frame is lower than that of the mesh structure 600;

a support bracket 200 for supporting the back support 100, which is substantially rigid and has a first bracket side 210, a second bracket side 220 and a bracket upper portion 230;

10 elastic members 300, the 10 elastic members 300 being arranged in a row at regular intervals and being connected between the back support upper 130 and the support frame upper 230, the elastic members 300 including a front connecting portion 310 connected to the back support upper 130, a rear connecting portion 320 connected to the support frame upper 230, and a bending portion 330 connected between the front connecting portion 310 and the rear connecting portion 320, the elastic members 300 being subjected to bending deformation when being pressed;

a first support 410 that is substantially rigid and disposed between the first back support side 110 and the first support frame side 210; further comprising a second support body 420 arranged symmetrically to the first support body 410, being substantially rigid and arranged between the second back support side 120 and the second support frame side 220, the second support body 420 and the first support body being arranged symmetrically; the first support body 410 and the first back support side portion 110, and the second support body 420 and the second back support side portion 120 are integrally formed by using a toughened flexible material, wherein the first support body 410 and the second support body 420 are not easily deformed, and the first back support side portion 110 and the second back support side portion 120 are relatively soft and can be deformed to a certain extent compared with the first support body 410 and the second support body 420.

The support frame 200 is located at the rear side of the back support 100, the support frame 200 comprises a first upright post 240, a second upright post 250 and a support frame top cross bar 260 located at the edge of the support frame upper part 230, the back support 100 comprises a back support top cross bar 150 located at the edge of the back support upper part 130, the support frame 200 further comprises a support frame bottom cross bar 270, and the first upright post 240, the support frame top cross bar 260, the second upright post 250 and the support frame bottom cross bar 270 are sequentially connected to form a closed support frame; the front connecting part 310 of the elastic member 300 is connected to the back support top rail 150, and the rear connecting part 320 of the elastic member 300 is connected to the support frame top rail 260; wherein the length of the back support top rail 150 is shorter than the length of the first back support side 110 and shorter than the length of the second back support side 120; the support frame top rail 260 has a length shorter than the length of the first support frame side 210 and shorter than the length of the second support frame side 220; the length of the support frame top rail 260 is longer than the length of the support frame bottom rail 270.

Further, the front connection part 310, the bending part 330 and the rear connection part 320 of the elastic member 300 are integrally formed by using a toughened flexible material; the 10 elastic pieces 300 are parallel to each other, the elastic pieces 300 are linear elastic wing strips, the width of each elastic wing strip is 2cm, and the length of each elastic wing strip is 4 cm; the horizontal position of the front connecting part 310 of the elastic part 300 is higher than that of the rear connecting part 320, and the included angle between the elastic part 300 and the horizontal plane is 45 degrees when the elastic part 300 is in a free state; a reinforced part 340 is arranged at the joint between the front connecting part 310 of the elastic member 300 and the upper part 130 of the back support, and the reinforced part 340 and the elastic member 300 are integrally formed by adopting a toughened flexible material.

The elastic member 300 and the upper portion 130 of the back support are integrally formed by using a toughened flexible material; the elastic member 300 and the upper support frame 230 are fixedly connected in a detachable manner, specifically, the upper support frame 230 is provided with a notch 231, the rear connection portion 320 of the elastic member 300 is inserted into the notch 231 to realize the plug connection between the upper support frame 230 and the elastic member 300, further, two side surfaces of the rear connection portion 320 of the elastic member 300 are respectively provided with a fixing protrusion 321, the support frame 200 comprises a support frame main body 280 and a support frame splicing member 290 spliced on the support frame main body 280, the support frame main body 280 and the support frame splicing member 290 are respectively provided with a first groove 281 and a second groove 291 for accommodating the fixing protrusion 321, the fixing protrusion 321 is accommodated in the first groove 291 and the second groove 291, and after the support frame main body 280 and the support frame splicing member 290 are spliced, the elastic member 300 is fixedly connected to the upper support frame 230; a plurality of insertion grooves 282 are formed on the support frame main body 280, and a plurality of insertion tongues 292 are formed on the support frame splicing piece 290; the insertion tongue 292 is inserted into the insertion groove 282 to realize a splicing connection between the holder body 280 and the holder splicing member 290, and then is locked by a screw and is connected with a decoration member 283 to cover the screw at the outside of the screw.

The first support body 410 and the first support frame side portion 210 are fixedly connected in a detachable manner; specifically, the first support 410 is provided with a first connecting lug 415, the first support side 210 is provided with a first connecting groove 212 in plug connection with the first connecting lug 415, and the first connecting lug 415 is inserted into the first connecting groove 212 and is locked by a screw to realize connection between the first support 410 and the first support side 210; the plane of the first connecting lug 415 and the plane of the first connecting slot 212 are both perpendicular to the curved surface of the lumbar support portion 140 of the back support; correspondingly, a detachable fixed connection mode is also adopted between the second supporting body 420 and the second supporting frame side portion 220, specifically, a second connecting lug 425 is arranged on the second supporting body 420, a second connecting groove 222 which is connected with the second connecting lug 425 in an inserting manner is arranged on the second supporting frame side portion 220, and the second connecting lug 425 is inserted into the second connecting groove 222 and is locked by a screw to realize the connection between the second supporting body 420 and the second supporting frame side portion 220; the plane of the second connecting lug 425 and the plane of the second connecting slot 222 are both perpendicular to the curved surface of the lumbar support portion 140 of the back support.

Further, a 5cm gap 500 is left between said first back support side 110 and first support frame side 210, the first support 410 being connected in the gap at the position of the back support lumbar 140; the first supporting body 410 is in an arch-shaped hollow structure, a first connecting end a411 and a second connecting end a412 which are spaced up and down are formed at the connecting position of the first supporting body 410 and the first back supporting part side part 110, a third connecting end a413 is formed at the connecting position of the first supporting body 410 and the first supporting frame side part 210, and the third connecting end a413 is positioned at the oblique inner rear part of the back supporting part 100; correspondingly, a gap 500 is left between said second back support side 120 and the second support frame side 200, and a second support body 420 is connected in the gap at the position of the back support lumbar 140; the second supporting body 420 is in an arch-shaped hollow structure, a first connecting end B421 and a second connecting end B422 are formed at the connecting position of the second supporting body 400 and the second back supporting piece side portion 120, a third connecting end B423 is formed at the connecting position of the second supporting body 420 and the second supporting frame side portion 220, and the third connecting end B423 is also positioned at the oblique inner rear side of the back supporting piece 100; the connecting lines among the first connecting end a411, the first back support side 110, the second connecting end a412, and the third connecting end a413 are in a triangle-like shape, and the connecting lines among the first connecting end B421, the second back support side 120, the second connecting end B422, and the third connecting end B423 are also in a triangle-like shape.

The first back support side part 110 at least comprises a first back support 111 and a first waist support 141 from top to bottom in sequence, wherein the first waist support 141 is positioned between a first connecting end A411 and a second connecting end A412, and the deformation amount of the first waist support 141 is lower than that of the first back support 111; the first support frame side 210 is formed with a first bend 211 bending inwards at a third connection end a413, the first support body 410 is formed with a first protrusion 414 bending outwards at the third connection end a413, the first protrusion 414 is connected with the first bend 211, and the first protrusion 414 is supported above the first bend 211; correspondingly, the second back support side 120 at least comprises a second back support 121 and a second waist support 142 from top to bottom, wherein the second waist support 142 is located between the first connecting end B421 and the second connecting end B422, and the deformation amount of the second waist support 142 is lower than that of the second back support 121; the second support frame side 220 is formed with a second bend 221 bent inward at a third connection end B423, the second support body 420 is formed with a second protrusion 424 bent outward at the third connection end B423, the second protrusion 424 is connected to the second bend 221, and the second protrusion 424 is supported above the second bend 221.

Furthermore, said back support 100 further comprises a back support lower part 160; the edges of the first back support side part 110, the edge of the back support upper part 130, the edge of the second back support side part 120 and the edge of the back support lower part 160 are sequentially connected and closed to form a back support frame, a mesh-shaped structure 600 is formed in the back support frame, the mesh-shaped region 600 is formed by arranging a plurality of diamond-shaped hollow structures, and the longitudinal length of each diamond-shaped hollow structure is longer than the transverse length of each diamond-shaped hollow structure.

The toughened flexible material is a flexible material toughened by about 20%, and preferably 20%.

Example 2:

the only difference from example 1 is:

a chair, as shown in fig. 1-4, comprising a seat 700, including a chair back or backrest or a new backrest as described above, wherein the lower portion of the first support frame side portion 210 and the lower portion of the second support frame side portion 220 are fixedly connected to the seat 700.

The above description in this specification is merely illustrative of the present invention. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.

Claims

1. A seat back, characterized by comprising:

a back support (100) having a first back support side (110), a second back support side (120), a back support upper portion (130), a back support lumbar portion (140);

a support frame (200) to support the back support (100) that is substantially rigid and has a first support frame side (210), a second support frame side (220), and a support frame upper portion (230);

at least 3 elastic members (300), the elastic members (300) being arranged in a row in a transverse direction and each being connected between the back support upper part (130) and the support frame upper part (230), the elastic members (300) including a front connection part (310) connected to the back support upper part (130), a rear connection part (320) connected to the support frame upper part (230), and a bending part (330) connected between the front connection part (310) and the rear connection part (320), the elastic members (300) being subjected to a bending deformation when being subjected to a pressure;

a first support (410) being substantially rigid and disposed between the first back support side (110) and the first support frame side (210).

2. A seat back according to claim 1, wherein: also included is a second support body (420) disposed symmetrically with the first support body (410), which is substantially rigid and disposed between the second back support side (120) and the second support frame side (220).

3. A seat back according to claim 1, wherein: the number of the elastic members (300) is greater than or equal to 5, and the interval between the back support upper part (130) and the support frame upper part (230) is uniform.

4. A seat back according to claim 1, wherein: the elastic piece (300) and the upper part (230) of the support frame are fixedly connected in a detachable mode.

5. A seat back according to claim 1, wherein: the first support (410) is integrally formed with the first back support side (110).

6. A seat back according to claim 1, wherein: the first support body (410) and the first support frame side portion (210) are in detachable fixed connection or rotary connection.

7. A seat back according to claim 1, wherein: the elastic pieces (300) are parallel to each other, and the longitudinal section of each elastic piece (300) is in any one or combination of any more of a straight line shape, a Y shape, an L shape, a T shape, a V shape and a Z shape.

8. The seat back according to claim 7, wherein the elastic member (300) is a linear elastic wing having a width of 0.8cm ~ 2cm and a length of 2.5cm to 5 cm.

9. A seat back according to claim 1, wherein: a reinforced part (340) is arranged at the joint between the front connecting part (310) of the elastic part (300) and the upper part (130) of the back support part, and the reinforced part (340) and the elastic part (300) are integrally formed by adopting toughened flexible materials.

10. A seat back according to claim 1, wherein: the front connecting part (310), the bending part (330) and the rear connecting part (320) of the elastic part (300) are integrally formed by toughened flexible materials.

11. A seat back according to claim 1, wherein: the front connecting part (310) and the bending part (330) of the elastic part (300) and the rear connecting part (320) and the bending part (330) are fixedly connected in a detachable mode.

12. A seat back according to claim 1, wherein: the horizontal position of the front connecting part (310) of the elastic piece (300) is higher than the horizontal position of the rear connecting part (320).

13. The seat back according to claim 1, wherein the angle between the elastic member (300) and the horizontal plane is 30 ° ~ 80 ° when the elastic member (300) is in the free state.

14. A seat back according to claim 1, wherein: the support frame (200) is positioned at the rear side of the back support (100), the support frame (200) comprises a first upright post (240), a second upright post (250) and a support frame top cross bar (260) positioned at the edge of the upper part (230) of the support frame, and the back support (100) comprises a back support top cross bar (150) positioned at the edge of the upper part (130) of the back support; the front connection (310) of the elastic member (300) is connected to the back support top rail (150), and the rear connection (320) of the elastic member (300) is connected to the support frame top rail (260).

15. A seat back according to claim 14, wherein: the first upright post (240), the support frame top cross rod (260) and the second upright post (250) are sequentially connected to form a U-shaped structure.

16. A seat back according to claim 15, wherein: the support frame (200) further comprises a support frame bottom cross rod (270), and a closed support frame is formed by sequentially connecting the first upright post (240), the support frame top cross rod (260), the second upright post (250) and the support frame bottom cross rod (270).

17. A seat back according to claim 4, wherein: a notch (231) is formed in the upper portion (230) of the support frame, and a rear connecting portion (320) of the elastic piece (300) is inserted into the notch (231) to achieve plug connection between the upper portion (230) of the support frame and the elastic piece (300).

18. A seat back according to claim 17, wherein: the rear connecting part (320) of the elastic piece (300) is provided with a fixing protrusion (321), the support frame (200) comprises a support frame main body (280) and a support frame splicing piece (290) spliced on the support frame main body (280), a first groove (281) and a second groove (291) used for accommodating the fixing protrusion (321) are formed in the support frame main body (280) and the support frame splicing piece (290), the fixing protrusion (321) is accommodated into the first groove (281) and the second groove (291), and after the support frame main body (280) and the support frame splicing piece (290) are spliced, the elastic piece (300) is fixedly connected to the upper portion (230) of the support frame.

19. A seat back according to claim 18, wherein: a plurality of insertion grooves (282) are formed in the support frame main body (280), and a plurality of insertion tongues (292) are formed in the support frame splicing piece (290); the splicing tongue (292) is inserted into the splicing groove (282) to realize splicing connection between the support frame main body (280) and the support frame splicing piece (290), and then the screw is locked, and a decorative piece (283) used for covering the screw is connected to the outer part of the screw.

20. A seat back according to claim 18, wherein: the fixing protrusion (321) is provided at both side surfaces at one end of the elastic member (300).

21. A seat back according to claim 1, wherein: a gap (500) of 2-6cm is left between the first back support side (110) and the first support frame side (210), and the first support body (410) is connected in the gap at the position of the back support lumbar support (140).

22. A seat back according to claim 21, wherein: the first supporting body (410) is of an arch-shaped hollow structure or a triangular hollow structure, a first connecting end A (411) and a second connecting end A (412) which are spaced up and down are formed at the joint of the first supporting body (410) and the first back supporting part side part (110), and a third connecting end A (413) is formed at the joint of the first supporting body (410) and the first supporting frame side part (210).

23. A seat back according to claim 1, wherein: said back support (100) further comprising a back support lower portion (160); the first (110), upper (130), second (120) and lower (160) edges of the back support are connected in series to form a back support frame, which is substantially rigid and in which a flexible mesh structure (600) is provided.

24. A seat back according to claim 1, wherein: said back support (100) further comprising a back support lower portion (160); the first back support side (110), the upper back support (130), the second back support side (120) and the lower back support (160) are connected in series to form a back support frame, the back support frame is substantially flexible, and a flexible mesh structure (600) is arranged in the back support frame.

25. A seat back according to claim 24, wherein: the back support frame is less flexible than the mesh structure (600).

26. A seat back, characterized by comprising:

a first support (410) being substantially rigid and disposed between the first back support side (110) and the first support frame side (210); the first supporting body (410) is of an arch-shaped hollow structure or a triangular hollow structure, a first connecting end A (411) and a second connecting end A (412) are formed at the connecting position of the first supporting body (410) and the first back supporting part side part (110), and a third connecting end A (413) is formed at the connecting position of the first supporting body (410) and the first supporting frame side part (210).

27. A seat back according to claim 26, wherein: also included is a second support body (420) disposed symmetrically with the first support body (410), which is substantially rigid and disposed between the second back support side (120) and the second support frame side (220).

28. A seat back according to claim 26, wherein: the first back support side part (110) at least comprises a first softer back support (111) and a first harder waist support (141) from top to bottom in sequence, wherein the first waist support (141) is positioned between a first connecting end A (411) and a second connecting end A (412), and the first waist support (141) does not deform or the deformation amount of the first waist support is lower than that of the first back support (111) when the first waist support is extruded by external force.

29. A seat back according to claim 26, wherein: the first back support side part (110) at least comprises a first back side support (111) and a first waist side support (141) from top to bottom in sequence, wherein the first waist side support (141) is positioned between a first connecting end A (411) and a second connecting end A (412); the first back side support (111) and the first waist side support (141) are both rigid and do not deform when pressed by an external force.

30. A seat back according to claim 26, wherein: the first support frame side portion (210) is provided with a first bend (211) which is bent inwards at a third connecting end A (413), the first support body (410) is provided with a first protruding portion (414) which is bent outwards at the third connecting end A (413), the first protruding portion (414) and the first bend (211) are connected, and the first protruding portion (414) is supported above the first bend (211).

31. A seat back according to claim 26, wherein: the first support (410) is integrally formed with the first back support side (110).

32. A seat back according to claim 26, wherein: the first support body (410) and the first support frame side portion (210) are in detachable fixed connection or rotary connection.

33. A seat back according to claim 32, wherein: the first support body (410) is provided with a first connecting lug (415), the first support frame side portion (210) is provided with a first connecting groove (212) in plug-in connection with the first connecting lug (415), and the first connecting lug (415) is inserted into the first connecting groove (212) and is locked through a screw to achieve connection between the first support body (410) and the first support frame side portion (210).

34. A seat back according to claim 33, wherein: the plane of the first connecting lug (415) and the plane of the first connecting groove (212) are both perpendicular to the curved surface of the lumbar support part (140) of the back support.

35. A seat back according to claim 26, wherein: the third connection end A (413) is located diagonally inward and rearward of the back support (100).

36. A seat back according to claim 26, wherein: said back support (100) further comprising a back support lower portion (160); the first (110), upper (130), second (120) and lower (160) edges of the back support are connected in series to form a back support frame, which is substantially rigid and in which a flexible mesh structure (600) is provided.

37. A seat back according to claim 26, wherein: said back support (100) further comprising a back support lower portion (160); the first back support side (110), the upper back support (130), the second back support side (120) and the lower back support (160) are connected in series to form a back support frame, the back support frame is substantially flexible, and a flexible mesh structure (600) is arranged in the back support frame.

38. A seat back according to claim 37, wherein: the back support frame is less flexible than the mesh structure (600).

39. A novel backrest is characterized in that: comprising a seat back according to any one of claims 1 to 38, said resilient member (300) being formed integrally with the upper back support portion (130).

40. A novel backrest is characterized in that: comprising a seat back according to any one of claims 1 to 38, wherein the elastic element (300) is connected to the upper back support part (130) by means of a detachable fixed connection.

41. A seat, characterized by: comprising a seat (700) and: the seat back of any of claims 1-38 or the novel back of any of claims 39-40, wherein a lower portion of the first support frame side (210) and a lower portion of the second support frame side (220) are each fixedly attached to the seat (700).