CN213487918U - Waist of seat is by part and seat - Google Patents

Abstract

The utility model discloses a waist of seat leans on part and seat, waist leans on the part including bearing the piece, bear and lean on the piece to be equipped with the face of leaning on that is used for supplying the person of taking to lean on, and the one end of bearing the piece is provided with waist side and presss from both sides the support piece, be equipped with the clamp holding surface that is used for with the person of taking waist side laminating on the waist side presss from both sides the support piece, bearing the piece with be the contained angle setting between the waist side presss from both sides the support piece, and the face of leaning on and press from both sides the support surface and meet; and then provide a seat that contains above-mentioned waist and lean on part, through holding the one end that leans on the piece and being provided with waist side clamp support piece and be used for with the laminating of person's waist side of taking, when holding the piece support person back, waist side clamp support piece can press from both sides the waist that holds the person of taking, and the waist of the person of taking between form certain ascending frictional force, offset with person's self gravity part, play and alleviate the lumbar vertebrae atress, alleviate the effect of lumbar vertebrae strain.

Description

Waist of seat is by part and seat

Technical Field

The utility model relates to a seat field, more specifically the utility model relates to a waist of seat leans on part and seat that says so.

Background

The traditional chair generally has a seat for a human body to sit down, when the human body sits on the seat, the body weight is supported by the seat, the human body physiological structure shows that the spine of the human body bears the upper body of the human body such as the head, the back and the like, and the load is quite large because the lumbar is at the lowest position of the spine, and the junction of the movable section and the fixed section is easier to be damaged. If the sitting posture of the human body is incorrect, the human body is easy to have soreness and backache except for looking mentally, even the spine and the nerve are pressed, and the health is finally affected.

The double-back chair is provided with a lumbar support on the backrest, the lumbar support is two chair backs, the left chair back and the right chair back are respectively one, when a user sits on the chair seat to support, the two chair backs support the back of the user, the pressure of the spine is transferred to the left and right latissimus dorsi to form an upward thrust, and the function of reducing the pressure of the lumbar vertebra is achieved. However, the lumbar support on the backrest of the seat described above still has a problem that the lumbar support cannot hold and support the lumbar side of the occupant, and cannot support the lumbar side of the occupant.

Disclosure of Invention

In order to solve the technical problem, the utility model aims to provide an it leans on the piece to have to hold, and is provided with the waist that is used for pressing from both sides the support piece with the waist side of the person of taking the laminating on holding to lean on the piece and leans on the part, can press from both sides the support to the waist of the person of taking in the support when taking the person's back.

Solve the technical problem, the utility model discloses take following technical scheme:

the utility model provides a waist of seat leans on part, leans on the piece including holding, hold to be equipped with on the piece and be used for supplying the person of taking to lean on the face of holding, just the one end that holds to lean on the piece is provided with waist side clamp support piece, waist side clamp is equipped with on the support piece and is used for the double-layered holding surface of the laminating of person's waist side of taking, hold lean on the piece with waist side clamp is between the support piece and is the contained angle setting, and hold lean on the face with press from both sides the holding surface and intersect.

In a further aspect, the support member is integrally formed with the lumbar side clamp.

In a further scheme, an included angle between the waist side clamping and supporting piece and the bearing piece is 75-95 DEG

In a further scheme, the bearing device further comprises a second connecting piece, wherein the second connecting piece is arranged on the bearing piece, and the second connecting piece and the bearing surface are positioned on the front side and the rear side of the bearing piece which are opposite.

In a further scheme, the bearing part is made of elastic materials, and the bearing surface is an arc-shaped surface protruding outwards, so that the whole bearing surface is attached to the back of a user conveniently.

In a further scheme, the bearing part and the waist side clamping part are rotatably connected through a first connecting piece, and the waist side clamping part can rotate relative to the bearing part to realize the switching between an open state and a closed state; when the waist side clamping and supporting piece is in the opening state, the waist side clamping and supporting piece is far away from the bearing surface of the bearing piece and is in an opening state; when the waist side clamping and supporting piece is in the closed state, the waist side clamping and supporting piece is close to the bearing surface of the bearing piece or is superposed with the bearing surface of the bearing piece. The rider can rotate the waist side holding piece as required to realize the switching between the open state and the closed state of the waist side holding piece.

In a further aspect, the length of the lumbar side splint in the transverse direction is 15-35 cm.

The utility model discloses propose a seat simultaneously, include:

a support frame configured as a main body support for the lumbar support;

the support frame bilateral symmetry is provided with the waist among the above-mentioned scheme and leans on the part, it is articulated with the support frame to hold to lean on the piece and to realize holding to lean on the rotation relatively of piece and support frame to hold, it has the branch to locate on the face of leaning on and holds to lean on the piece and the support frame articulated department both sides inboard region and outside region, the waist side presss from both sides the support piece and is located the outside region, when the inboard region of holding the face of leaning on receives backward extrusion's power, drive the waist side presss from both sides the support piece and overturns to the center of support frame.

In further scheme, when bearing the face and receiving backward extruded power, bearing the piece and extending at longitudinal direction along the carriage, form relative frictional force with the person's of taking the back, offset with person's self gravity part, play and alleviate the lumbar vertebrae atress, alleviate the effect of lumbar vertebrae strain.

In a further scheme, at least one of the upper end and the lower end of the bearing part is connected with the support frame in a sliding mode along the longitudinal direction.

In a further scheme, the upper end part of the bearing part is in sliding and pivoting connection with the support frame, and the lower end part of the bearing part is in rotating connection with the support frame and is kept relatively fixed with the support frame in the longitudinal direction.

In a further scheme, the upper part of the support frame is in sliding connection with the upper end of the bearing piece by adopting a sliding mechanism; the sliding mechanism comprises an upper support block and an upper sliding groove, the upper end of the bearing part is connected with the upper support block in a pivoting manner, and the upper support block is clamped in the sliding groove and is connected with the sliding groove in a sliding manner.

In a further scheme, the lower part of the supporting frame and the lower end of the bearing part are respectively provided with a lower supporting block and a third rotating part, and the lower supporting block and the third rotating part are penetrated by a rotating shaft to realize relative rotation.

In a further scheme, a first elastic piece is arranged between the bearing piece and the support frame, and when the inner side area of the bearing piece loses the action of backward external force, the first elastic piece drives the bearing piece to reset.

In a further scheme, the two bearing parts are connected through a second elastic part, and the second elastic part and the bearing parts are integrally formed.

In a further scheme, the two bearing parts are connected by at least one connecting rod, and two ends of the connecting rod are respectively and rotatably connected with one bearing part.

Advantageous effects

1. The waist side clamping and supporting piece is arranged at one end of the bearing and leaning piece, when the bearing and leaning piece is installed on the seat, the waist side clamping and supporting piece can be attached to the waist side of the rider, and the waist side clamping and supporting piece can clamp and support the waist of the rider while the bearing and leaning piece supports the back of the rider, so that the rider is enabled to straighten the waist; if it takes place deformation and upwards extend for elastic material to hold by the piece, then the waist side presss from both sides between the waist that holds the piece and still take the person and form certain ascending frictional force between the waist, offsets with person's self gravity part to play and alleviate the lumbar vertebrae atress, alleviate the effect of lumbar vertebrae strain.

2. Through will holding and lean on the piece design to elastic material, just hold and lean on the face for outside bellied arcwall face, when the person of taking leans on in holding and leaning on the piece, hold and lean on the face and take place deformation and be convenient for whole back laminating of holding and leaning on face and person of taking.

3. Furthermore, the bearing part is rotatably connected with the waist side clamping part through the first connecting part, and a rider can rotate the waist side clamping part as required to realize the switching between the opening state and the closing state of the waist side clamping part.

Drawings

FIG. 1 is a schematic structural view of a seat in embodiment 1 with waist side holders in a closed state;

FIG. 2 is a schematic structural view of the seat of embodiment 1 with the lumbar clamp open;

FIG. 3 is a schematic view of the seat of embodiment 1 from a back perspective with the lumbar clamp closed;

FIG. 4 is an enlarged view of portion A of FIG. 3;

FIG. 5 is a schematic structural view of a bearing member in embodiment 1;

FIG. 6 is a comparison of the embodiment 1 bearing member before and after expansion;

FIG. 7 is a schematic view showing the structure of a lumbar side clamper in embodiment 1;

FIG. 8 is a top view of the seat of embodiment 1 with the lumbar clamp in an open position and undamped;

FIG. 9 is a plan view of the seat of embodiment 1 with the lumbar clamp holder in an open state and clamped;

FIG. 10 is a schematic view and a partially enlarged view of the seat of embodiment 1 from another perspective with the lumbar clamp closed;

FIG. 11 is a schematic view of a seat in embodiment 2;

FIG. 12 is a schematic view showing a structure of a bearing member in embodiment 2;

FIG. 13 is a schematic view of a seat according to embodiment 3;

FIG. 14 is a top view of the seat of embodiment 3;

fig. 15 is a plan view of the seat in embodiment 4.

The reference numerals in the schematic drawings illustrate:

1-support frame, 2-lumbar support part, 21-support part, 210-fulcrum, 211-inner region, 212-outer region, 213-back top lumbar plate, 214-lumbar plate connector, 2141-avoidance groove, 215-support surface, 22-lumbar side holder, 221-through groove, 222-rib, 223-holder surface, 3-first fastener, 4-first connector, 5-first stopper, 6-second fastener, 7-second connector, 8-second stopper, 9-pin, 10-slide mechanism, 101-upper support block, 102-upper chute, 11-first elastic part, 12-second elastic part, 13-cushion, 14-connecting rod.

Detailed Description

For a further understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings.

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

The utility model discloses the description about the position is based on the seat is described when normal use, and the waist leans on the part promptly and is in basically upright state with the back to accept leaning on of human back, horizontal direction is the horizontal direction.

Example 1: the utility model discloses a waist leans on the part to be the component of seat, and the seat is whole to be described in detail next:

referring to fig. 1-10, the present embodiment provides a chair, which includes a supporting frame 1, and two lumbar support members 2 are disposed on the supporting frame 1 and are bilaterally symmetric. In this embodiment, the lumbar support member 2 includes a support member 21 and a lumbar clamp member 22. The support member 21 is provided with a support surface 215 on which the occupant rests, and the lumbar-side retainer 22 is provided with a retainer surface 223 for abutting against the lumbar side of the occupant. Wherein the bearing part 21 is rotatably connected with the support frame 1, and a fulcrum 210 is formed at the rotating connection. Specifically, a second connecting piece 7 is arranged at the pivot point on the bearing piece 21, a second fixing piece 6 is arranged on the support frame 1, and a pin shaft 9 penetrates through the second connecting piece 7 and the second fixing piece 6 to realize relative rotation. The length of the waist side clamping and supporting piece 22 is set to be 15-25cm, so that the waist side clamping and supporting piece 22 can be positioned at the left side and the right side of the waist of a human body, namely, enough length can be provided to cover the waist side part of the human body, the contact area between the waist side clamping and supporting piece and the waist side of the human body is increased, and a sufficient clamping effect is achieved.

Meanwhile, the bearing piece 21 is provided with an inner area 211 and an outer area 212 which are respectively arranged at two sides of the fulcrum 210, and the waist side holding piece 22 is hinged with the outer area 212 of the bearing piece 21 so as to realize that the waist side holding piece 22 can rotate relative to the bearing piece 21. Specifically, the first fixing member 3 is disposed in the outer region 212 of the support member 21, the first connecting member 4 is disposed on the waist-side clamp holder 22, the first connecting member 4 and the first fixing member 3 are provided with the pin shaft 9 in a penetrating manner to realize relative rotation, and then the waist-side clamp holder 22 can rotate relative to the support member 21 to realize switching between the open state and the closed state. More specifically, the first fixing member 3 is two parallel clamping pieces, the first connecting member 4 is a rotating block, the rotating block is located between the two parallel clamping pieces, and a pin shaft 9 penetrates through the rotating block to realize relative rotation. In this embodiment, in the open state, the waist side holder 22 is opened away from the inner region 211 of the support member 21. In the closed state, the lumbar side clamper 22 is close to the inner region 211 of the support member 21 or overlaps the inner region 211 of the support member 21.

When the user leans against the seat, as shown in fig. 9, the backrest is forced and the support surface 215 is pressed backward, which causes the outer region 212 of the support member 21 to turn outward. When the waist side holding piece 22 is in the open state and the outer region 212 of the holding piece 21 is turned outwards, the outer region 212 of the holding piece 21 drives the holding surfaces 223 on the waist side holding piece 22 to rotate towards the center direction of the supporting frame 1 and approach each other.

The user of the chair simply rests on the backrest, the backrest is forced, i.e. the inner side region 211 of the support member 21 is forced to press and turn backwards, and the support member 21 turns over, clamping the back of the user (i.e. at the spine of the user). Meanwhile, the supporting part 21 drives the supporting part 21 with two sides in the opening state to rotate in the center direction of the support frame 1, so as to clamp the waist parts at two sides of the user. Easy understanding, the user normally sits on the seat, and its lumbar vertebrae atress can cause user's lumbar vertebrae strain after taking for a long time, and through holding 21 centre gripping user's vertebra department in this scheme, holds and forms certain ascending frictional force between face 215 and the user's the back, offsets with user self gravity part, plays and alleviates the lumbar vertebrae atress, alleviates the effect of lumbar vertebrae strain. Similarly, the waist-side clamping piece 22 rotates towards the center of the support frame 1 to clamp the waist at two sides of the user, and the clamping surface 223 also provides an upward supporting force for the waist of the patient to relieve the stress of the lumbar.

Meanwhile, when the user does not need to grip the waist, as shown in fig. 1, the seat only needs to rotate the lumbar side clamper 22 so that the lumbar side clamper 22 overlaps the inner side region 211 of the support member 21. Can adjust by oneself according to user's demand, convenient and fast, general nature is high.

In addition, in the seat in the scheme, the supporting piece 21 on the support frame 1 drives the waist side clamping piece 22 to rotate, the sitting part is the seat cushion 13, other transmission mechanisms do not need to be added, and the seat cushion 13 is directly connected with the support at the lower part for supporting, so that the seat cushion 13 can select any materials and shapes and sizes according to the preference of a user.

As a preferred embodiment, the lumbar side mounts 22 are of a frame-like construction, as shown in fig. 5, 6 and 7. Specifically, in the present embodiment, the waist side holder 22 includes a rectangular plate material, but it is understood that the shape is not limited thereto, and may be circular, oval, or the like. The rectangular plate is provided with a plurality of through grooves 221 extending along the same direction. The corresponding support part 21 includes a plurality of back-supporting waist pieces 213 disposed at intervals and extending along the same direction, two adjacent back-supporting waist pieces 213 are connected by a waist piece connecting part 214, and the back-supporting waist pieces 213 are in one-to-one correspondence with the through grooves 221. When the waist side holder 22 is in the closed state, at least a part of the back top waist panel 213 is located in the corresponding through groove 221 or exposed forward from the through groove 221. If the back top waist panel 213 is located in the corresponding through groove 221, the back top waist panel 213 can be used together with the waist side holder 22 for the user to rest on to receive the pressure of the user. If the back top waist panel 213 is exposed forward from the through groove 221, the back of the user only fits to the back top waist panel 213 and does not contact the waist side holder 22 when the user is leaning on the back, thereby reducing the concave-convex feeling of the back contact surface of the user. The use comfort of the user is improved.

In this embodiment, when the waist side holder 22 is in the closed state, the back top waist panel 213 is exposed forward from the notch of the through groove 221 through the through groove 221 or the front end surface of the back top waist panel 213. Further, in order to avoid the interference between the waist-side holding member 22 and the support member 21, the waist-panel connecting member 214 is located on the back of the back-top waist panel 213, and the waist-panel connecting member 214 located between two adjacent back-top waist panels 213 is provided with an avoiding groove 2141 along the width direction thereof. The rib 222 is formed at a position between two adjacent through grooves 221 on the lumbar side holding part 22, and when the lumbar side holding part 22 is in a closed state, the rib 222 is located in the escape groove 2141. And in order to form the above-mentioned escape groove 2141, a single waist panel connecting piece is used for the waist panel connecting piece 214, and the escape groove 2141 is formed by bending the waist panel connecting piece 214 backwards. In this embodiment, the through-groove 221 and the back top waist panel 213 extend in the transverse direction. However, it is also possible that both the through slots 221 and the back top waist panel 213 extend in the longitudinal direction.

In the present embodiment, as shown in fig. 4, in order to prevent the user from rotating the lumbar-side holding unit 22 so that the lumbar-side holding unit 22 rotates beyond the range of the stroke relative to the support unit 21, a first limiting member 5 for limiting the rotation angle of the lumbar-side holding unit 22 relative to the support unit 21 to exceed a preset range is disposed at the hinge joint between the lumbar-side holding unit 22 and the support unit 21.

As a preferred embodiment, the first limiting member 5 in this embodiment is a screw, which is screwed to the waist-piece connecting member 214, and an end of the screw abuts against the waist-side holder 22 during limiting. When the waist side clamping piece 22 rotates to a designated angle relative to the bearing piece 21, one end of the screw abuts against the waist side clamping piece 22 to realize limiting. And the user can be according to the size of self size, independently turn round the screw, and the adjusting screw surpasss the length of first mounting 3, realizes then that waist side presss from both sides the regulation of holding the spacing turned angle of piece 22 for leaning on 21 for this seat is applicable to the user of each size. Although the screw is screwed to the lumbar plate connection member 214 in this embodiment, the screw may be screwed to the lumbar-side holder 22 and one end of the screw may abut against the bearing member 21. And it is easy to understand that although the present embodiment adopts a screw as the first limiting member 5, it is easy to understand that other limiting members in the prior art, such as a ratchet mechanism, can also be adopted under the condition that the rotation angle of the waist-side clamping member 22 relative to the bearing member 21 is not beyond the preset range.

Similarly, as shown in fig. 4, the supporting member 21 is provided with a second limiting member 8 at the fulcrum 210 for limiting the rotation angle of the supporting member 21 relative to the supporting frame 1 to exceed the preset range; specifically, the second limiting member 8 is a limiting post, the second limiting member 8 is fixedly disposed on the second connecting member 7, and when the bearing member 21 rotates to a limited angle relative to the supporting frame 1, the second limiting member 8 abuts against the second fixing member 6 to achieve limiting.

In addition, in this embodiment, the supporting member 21 is made of an elastic material, and specifically, the supporting member 21 is made of plastic. Referring to fig. 6, when no external force is applied, the bearing surface 215 is an arc surface protruding outward, and the whole bearing member 21 protrudes forward to form an arc shape. When the leaning surface 215 is pressed backward, the leaning member 21 is extended along the supporting frame 1 in the longitudinal direction (i.e. the waist back panel 213 and the waist panel connecting member 214 are deformed and extended in the longitudinal direction). Make to bear and lean on piece 21 and user's back and closely laminate, the comfort level is higher, and bear and lean on piece 21 along the in-process that support frame 1 extends in longitudinal direction, give user's back a power opposite with the gravity direction, also played the effect of bearing to the user, alleviate lumbar vertebrae atress.

In order to facilitate the extension of the leaning element 21 along the supporting frame 1 in the longitudinal direction, in the embodiment, at least one of the upper and lower ends of the leaning element 21 is connected with the supporting frame 1 in a sliding manner in the longitudinal direction. Specifically, the upper end of the bearing member 21 is connected with the support frame 1 in a sliding and pivoting manner, and the lower end of the bearing member 21 is connected with the support frame 1 in a rotating manner and is kept relatively fixed with the support frame 1 in the longitudinal direction. More specifically, as shown in fig. 10, the upper portion of the supporting frame 1 is slidably connected to the upper end of the supporting member 21 by a sliding mechanism 10. The sliding mechanism 10 includes an upper support block 101 and an upper chute 102, the upper end of the support member 21 is pivotally connected to the upper support block 101 to form the pivot 210, and the upper support block 101 is clamped in the upper chute 102 and slidably connected to the upper chute 102.

Meanwhile, the lower part of the support frame 1 and the lower end of the bearing part 21 are respectively provided with a lower support block and a third rotating part, and the lower support block and the third rotating part are penetrated by a rotating shaft to realize relative rotation. In this embodiment, the lower supporting block and the third rotating member are the second fixing member 6 and the second connecting member 7. When the leaning member 21 is pressed backward, the upper supporting block 101 is connected with the upper chute 102 in a sliding manner, and the lower supporting block and the third rotating member are provided with a rotating shaft through for relative rotation, but are fixed longitudinally. Thereby, the extension of the bearing part 21 in the longitudinal direction of the support frame 1 is achieved.

As shown in fig. 3 and 4, a first elastic element 11 is further disposed between the bearing element 21 and the support frame 1, and when the inner side region 211 of the bearing element 21 loses the action of the backward external force, the first elastic element 11 drives the bearing element 21 to return. In a specific embodiment, the first elastic element 11 is a torsion spring, the torsion spring is sleeved on the outer wall of the pin 9 of the second fixing element 6 and the second connecting element 7, and two ends of the spring are configured to be respectively fixed relative to the second fixing element 6 and the second connecting element 7. When the bearing piece 21 rotates relative to the support frame 1, the second connecting piece 7 rotates around the second fixing piece 6, and the torsion spring deforms. When the bearing part 21 loses the external force, the torsion spring rebounds to drive the second connecting part 7 to reset.

Example 2: referring to fig. 11 and 12, the main difference between the present embodiment and the above embodiment 1 is that in the present embodiment, the supporting member 21 and the waist side holding member 22 are integrally formed, and the supporting member 21 and the waist side holding member 22 are disposed at an included angle. Because the bearing piece 21 and the waist side holding piece 22 are integrally formed, the bearing surface 215 on the bearing piece 21 is pressed by the back extrusion force to drive the waist side holding piece 22 integrated with the bearing piece 21 to rotate towards the center direction of the support frame 1 and approach each other, thereby realizing the holding of the waist of the rider. In the present embodiment, in order to facilitate the clipping, the included angle between the waist clipping and supporting member 22 and the leaning member 21 is approximately 90 °. However, in the case where it is ensured that the waist side of the occupant can be clamped, the angle between the waist side clamping member 22 and the support member 21 may be any angle within the range of 75 to 90 °.

Example 3: referring to fig. 13 and 14, the main difference between the present embodiment and the above embodiment 2 is that the two support members 21 are connected by the second elastic member 12, and the second elastic member 12 and the support members 21 are integrally formed. Specifically, in the present embodiment, the second elastic member 12 is a V-shaped member or a U-shaped member made of a plastic material, and when the user leans against the bearing member 21, the second elastic member 12 is firstly in contact with the middle protrusion of the second elastic member 12, so as to press the second elastic member 12 to stretch towards two sides to cooperate with the bearing members 21 at two sides to rotate and stretch. It will be readily appreciated that other resilient members known in the art may be used without affecting the rotation of the carrier 21.

Example 4: referring to fig. 15, the main difference between the present embodiment and the above embodiment 3 is that in the present embodiment, at least one connecting rod 14 is used for connecting the bearing members 21, and two ends of the connecting rod 14 are respectively rotatably connected with one bearing member 21.

The present invention and its embodiments have been described above schematically, and the description is not limited thereto, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, without departing from the inventive spirit of the present invention, the person skilled in the art should also design the similar structural modes and embodiments without creativity to the technical solution, and all shall fall within the protection scope of the present invention.

Claims (16)

1. The utility model provides a waist of seat leans on part, its characterized in that, leans on the piece including holding, hold and be equipped with the face of leaning on that is used for supplying the person of taking to lean on the piece, just the one end that the piece was leaned on to the holding is provided with waist side clamp and holds in the palm the piece, waist side clamp is held and is equipped with the double-layered holding surface that is used for with the laminating of person's waist side on holding in the palm the piece, hold lean on the piece with waist side clamp is held and is the contained angle setting between the holding in the palm the piece, and hold lean on.

2. The seat lumbar support component of claim 1 wherein said support is integrally formed with said lumbar side bolster.

3. The lumbar support component of a seat according to claim 2, wherein an angle between said lumbar side stay and said support member is 75-95 °.

4. The lumbar support component of a seat of claim 1, further comprising a second connector disposed on said support member, wherein said second connector and said support surface are located on opposite front and rear sides of said support member.

5. The lumbar support component of claim 1 wherein said support member is resilient and said support surface is an outwardly convex arcuate surface.

6. The lumbar support component of a seat according to claim 1, wherein the support member is rotatably connected with the lumbar side holder by a first connecting member, and the lumbar side holder can rotate relative to the support member to realize switching between an open state and a closed state; when the waist side clamping and supporting piece is in the opening state, the waist side clamping and supporting piece is far away from the bearing surface of the bearing piece and is in an opening state; when the waist side clamping and supporting piece is in the closed state, the waist side clamping and supporting piece is close to the bearing surface of the bearing piece or is superposed with the bearing surface of the bearing piece.

7. The lumbar support component of a seat according to claim 1, wherein the length of the lumbar side bolster in the transverse direction is 15-35 cm.

8. A seat, comprising:

a support frame configured as a main body support for the lumbar support;

the waist support part as claimed in any one of claims 1 to 7 is symmetrically arranged on the left and right sides of the support frame, the bearing part is hinged with the support frame to realize relative rotation of the bearing part and the support frame, the bearing surface is provided with an inner area and an outer area which are respectively arranged on two sides of the hinged position of the bearing part and the support frame, the waist side clamping and supporting part is positioned in the outer area, and when the inner area of the bearing surface is pressed backwards, the waist side clamping and supporting part is driven to turn towards the center of the support frame.

9. The seat according to claim 8, wherein the bolster member extends in a longitudinal direction along the support bracket when the bolster surface is subjected to a rearward compressive force.

10. The seat according to claim 9, wherein at least one of the upper and lower ends of the support member is slidably connected to the support frame in the longitudinal direction.

11. The seat according to claim 10, wherein an upper end of the support member is slidably and pivotally connected to the support frame, and a lower end of the support member is rotatably connected to the support frame and remains fixed relative to the support frame in the longitudinal direction.

12. The seat according to claim 11, wherein the upper portion of the support frame is slidably connected to the upper end of the support member by a sliding mechanism; the sliding mechanism comprises an upper support block and an upper sliding groove, the upper end of the bearing part is connected with the upper support block in a pivoting manner, and the upper support block is clamped in the sliding groove and is connected with the sliding groove in a sliding manner.

13. The seat as claimed in claim 12, wherein the lower part of the supporting frame and the lower end of the bearing member are respectively provided with a lower supporting block and a third rotating member, and the lower supporting block and the third rotating member are provided with a rotating shaft passing through for relative rotation.

14. The seat according to claim 8, wherein a first elastic member is disposed between the support member and the support frame, and when the inner region of the support member loses the action of backward external force, the first elastic member drives the support member to return.

15. The seat according to claim 8, wherein the two support members are connected by a second resilient member, the second resilient member being integrally formed with the support members.

16. The seat according to claim 8, wherein the two support members are connected by at least one link, and each link is pivotally connected at each end to one support member.

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