CN211431831U

CN211431831U - Elastic waist support backrest structure

Info

Publication number: CN211431831U
Application number: CN202020145370.5U
Authority: CN
Inventors: 王大秋
Original assignee: Zhejiang Motostuhl Furniture Technology Co ltd
Current assignee: Zhejiang Motostuhl Furniture Technology Co ltd
Priority date: 2020-01-22
Filing date: 2020-01-22
Publication date: 2020-09-08
Anticipated expiration: 2030-01-22

Abstract

The utility model discloses an elasticity waist support back structure, including back frame, supporting component and waist by the subassembly, back frame middle part is equipped with the support, and the supporting component sets up on the support, the waist leans on the intermediate position and the supporting component normal running fit of subassembly, and the waist leans on to be equipped with resilient means between subassembly and the supporting component, and the waist leans on subassembly and supporting component to rotate hookup location and the resilient means position of establishing and stagger from top to bottom, and the waist leans on the subassembly to rotate to make resilient means produce deformation and provide elasticity that resets. The elastic waist support backrest structure of the utility model has the advantages that the waist support component and the supporting component are in a rotation fit relationship, so that when the seat is used, the waist support component can automatically rotate to fit the waist of a human body, and the use comfort is improved; when the human body leaves the seat, the built-in elastic device provides reset elastic force to reset the waist rest component.

Description

Elastic waist support backrest structure

Technical Field

The utility model relates to an official working seat field, in particular to elasticity waist support back structure.

Background

As a common office chair, at present, a chair conforming to human engineering is widely favored by people, not only enables a user to sit comfortably and relieves fatigue, but also has certain positive effects on the development of human bones and the prevention of lumbar disc herniation. The waist support is an important component of office chairs because the waist is one of the most tired places of human body, and serious lumbar vertebra diseases can be caused if the sitting posture is incorrect for a long time or the structure of the chair is not reasonable. The lumbar of the human body can be supported through the waist support, so that the pressure on the waist of the user is effectively relieved; however, the function of the common waist-protecting office chair in the market is usually limited to the independent adjustment of the height of the waist-protecting chair or the slight adjustment of the angle, and the support and comfort of the waist-protecting office chair cannot meet the requirements of most people.

CN2728310Y patent of the chinese utility model discloses a "multi-section chair back structure", which mainly uses a chair frame to provide the chair back part to be connected in series and positioned and then to provide the elastic rod frame of the headrest to cover the fixed design, wherein a waist plate is connected and pivoted under the chair back plate, and the lower end of the waist plate is pivoted by the elasticity connected at the rear of the chair back plate, so that when the user lies and leans on, the waist plate provides the corresponding angle to change the elastic support relatively, and the angle is changed by the elastic buffer memory of the elastic rod. Although the waist board of the sofa can adjust different angles according to human bodies, the main mode of the sofa only can change the angle within a small range through the elastic buffering of the elastic rod at the rear end, the waist rest can not be rotationally attached, the chair back is designed in a multi-section mode and is not easy to detach, and the elastic rod of the chair back is exposed at the rear end of the chair back and is easy to damage and not attractive.

Disclosure of Invention

The utility model overcomes the defects in the prior art, and aims to provide a rotatable and resettable waist support backrest structure, namely, when a human body uses the seat, the waist support can be rotated around a rotating shaft to be jointed with the waist of the human body under stress, thereby achieving the best support effect; when the human body leaves the chair, the built-in elastic device provides elastic force to reset the waist rest.

The technical scheme of the utility model is realized like this:

the utility model provides an elasticity waist support back structure, includes back frame, supporting component and waist and leans on the subassembly, and back frame middle part is equipped with the support, and the supporting component sets up on the support, the waist leans on the intermediate position and the supporting component normal running fit of subassembly, and the waist leans on to be equipped with resilient means between subassembly and the supporting component, and the waist leans on subassembly and supporting component to rotate hookup location and the resilient means position of establishing to stagger from top to bottom, and the waist leans on the subassembly to rotate and makes resilient means produce deformation and provide elasticity that resets. The elastic waist support backrest structure of the utility model has the advantages that the waist support component and the supporting component are in a rotation fit relationship, so that when the seat is used, the waist support component can automatically rotate to fit the waist of a human body, and the use comfort is improved; when the human body leaves the seat, the built-in elastic device provides reset elastic force to reset the waist rest component.

Preferably, the back frame comprises vertical rods arranged at left and right intervals, a back frame cross rod is connected between the middle parts of the left and right vertical rods, a top cross rod is arranged at the upper end of the left and right vertical rods, the support is vertically arranged in the middle of the back frame cross rod, and the back frame cross rod is arranged in the middle of the back frame. The back frame cross rod can increase the supporting area and make the back frame structure more stable.

Preferably, the support assembly comprises a support seat, the support seat and the bracket can move relatively, and the lumbar support assembly is rotatably connected with the support seat. Thereby multiple cooperation relation makes the waist to lean on the subassembly and passes through the relative back of the body frame of supporting seat and realize rotating and slide from top to bottom, plays multiple functions.

Preferably, the supporting seat comprises a rotating shaft seat, and the waist rest assembly is in rotating fit with the rotating shaft seat through the rotating shaft, so that the waist rest can rotate around the rotating shaft seat to be attached to the waist of a human body; the elastic device is a spring, and a spring mounting hole is formed in at least one of the rotating shaft seat or the waist rest assembly. The spring is arranged in the spring mounting hole, and the spring is stressed to generate elastic deformation to provide reset elastic force so that the waist rest can reset automatically after being used.

Preferably, the device also comprises an installation block, the support seat is arranged between the installation block and the support, the support seat is in sliding fit with the installation block or the support, and the installation block is fixed on the support. The sliding fit between the supporting seat and the mounting block or the bracket enables the waist rest to slide up and down through adjustment, so that the height of the waist rest is suitable for a human body.

Preferably, the mounting block be the mounting of U type, the mounting block passes through the screw installation on the support, the mounting block bilateral symmetry is equipped with a plurality of draw-in grooves, the supporting seat both sides be equipped with the elasticity card strip, the elasticity card strip is through the elasticity convex point and the draw-in groove joint cooperation in area. The supporting seat is matched with the mounting hole in a clamping manner, so that the connection and the installation are quicker and more labor-saving.

Preferably, the two ends of the rotating shaft seat extend to the left and right direction to form ribbed plates, and the elastic clamping strip is formed at the outer side end of the ribbed plates.

Preferably, the end face of the rib plate facing the mounting block is provided with a sliding strip, the corresponding position of the mounting block is provided with a sliding groove, and the sliding strip is buckled in the sliding groove. The supporting seat and the mounting block are matched by a sliding strip and a sliding groove, so that the mounting block and the supporting seat can be ensured to be tightly connected.

Preferably, the mounting block comprises a transverse member and longitudinal members connected to the left end and the right end of the transverse member, the rotating shaft seat is exposed out of a gap between the two longitudinal members, and the clamping groove and the sliding groove are formed in the inner end face of the longitudinal member.

Preferably, the waist rest assembly is a frame shaped like a Chinese character 'kou', the waist rest assembly comprises a left frame side, a right frame side, an upper frame side and a lower frame side, the upper frame side and the lower frame side are connected to two ends of the left frame side and the right frame side, a buckling part is arranged in the middle of the lower frame side, the buckling part is buckled on the rotating shaft seat, and the buckling part is rotatably connected with the rotating shaft seat through a rotating shaft. The rotation of the lumbar support assembly can be realized through the mode of rotating connection.

Preferably, the upper frame of the lumbar assembly is laterally beyond or at the same height as the back frame rail as the support base moves upwardly along the bracket. The design can make the waist back subassembly be in back frame the place ahead, and the waist is leaned on in human waist all the time, provides the holding power.

Preferably, a frame enclosed by the top cross rod, the left and right vertical rods and the back frame cross rod is coated with a flexible supporting net. The flexible supporting net can provide better supporting effect, so that the product is more attractive, and the use comfort is improved.

Adopted above-mentioned technical scheme the utility model discloses a design departure point, theory and beneficial effect are:

the utility model provides an elasticity waist support back structure compares prior art, elasticity waist support back structure in the waist lean on the subassembly and the supporting component between for the normal running fit relation, during the use, the human waist of the rotatory laminating of subassembly by oneself is leaned on to the waist, improves and uses the travelling comfort, when the human body leaves the seat, built-in resilient means provides the elasticity that resets and makes the waist lean on the subassembly to reset.

Furthermore, the supporting component and the back frame are in sliding fit, the height of the waist rest component can be adjusted up and down according to the height of a human body, and the design is more humanized.

Drawings

Fig. 1 is a schematic perspective view of an embodiment of the present invention showing a structure of a waist support backrest without assembling all components;

fig. 2 is a schematic perspective view of a back frame in an embodiment of the present invention;

FIG. 3 is a schematic perspective view of an embodiment of a support base according to the present invention;

FIG. 4 is a schematic perspective view of the supporting seat and lumbar support assembly according to an embodiment of the present invention;

fig. 5 is a schematic perspective view of the waist rest assembly and the back frame in the embodiment of the present invention;

fig. 6 is a schematic perspective view of the combination of the back frame and the supporting component in the embodiment of the present invention;

fig. 7 is a schematic perspective view of the assembly of the mounting block and the supporting seat in the embodiment of the present invention;

fig. 8 is a schematic view of another angle of the assembly of the mounting block and the supporting seat according to the embodiment of the present invention;

fig. 9 is a schematic view of a three-dimensional structure of the back frame, the supporting seat and the mounting block after being combined in the embodiment of the present invention;

fig. 10 is a schematic perspective view of an installation block in an embodiment of the present invention;

fig. 11 is a schematic perspective view of a lumbar support assembly according to an embodiment of the present invention;

fig. 12 is a schematic perspective view of a structure of a waist support backrest according to an embodiment of the present invention;

fig. 13 is a schematic perspective view of the rotation of the lumbar support assembly in the embodiment of the present invention;

fig. 14 is a schematic perspective view of the waist support assembly lifting in the embodiment of the present invention;

fig. 15 is a schematic structural view of the chair of the present invention.

The figures are numbered: a back frame 1; a support assembly 2; a lumbar support assembly 3; a vertical rod 4; a top cross bar 5; a back frame cross bar 6; a bracket 7; installing a clamping groove 8; screw mounting holes 9; a support base 10; a rotating shaft seat 11; a shaft hole 12; a mounting block 13; a card slot 14; a rib plate 15; an elastic clip strip 16; a snap joint 17; a slide bar 18; a chute 19; a cross member 20; the longitudinal member 21; an inner end surface 22; the left frame side 231; a right frame side 232; an upper frame side 242; a lower frame side 241; a fastening portion 25; the rotating support plate 26; a snap-fit rear cover 27; an open slot 28; spring mounting holes 29; a spring 30; a through hole 31; a spring abutting hole 32; a nail passing hole 33; a flexible support web 34.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

In the description of the present invention, the term "at least one" means one or more unless explicitly defined otherwise. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The specific implementation manner of the utility model is as follows:

as shown in fig. 1 to 14, the present invention firstly provides an elastic waist support backrest structure, which comprises a back frame 1, a support component 2 and a waist support component 3.

As shown in fig. 1-2, back of the body frame 1 including control the montant 4 that the interval set up, be equipped with top horizontal pole 5 in the upper end of the montant 4 of both sides, be connected with a back of the body frame horizontal pole 6 between the middle part position of montant 4 of both sides, back of the body frame horizontal pole 6 can provide holding power and reinforcing structural strength, the vertical direction in middle part of back of the body frame horizontal pole 6 sets up a support 7, support 7 surpass back of the body frame horizontal pole 6 downwards, support 7 in be equipped with the mounting groove 8 of the installation of supporting component 2, be equipped with a plurality of screw mounting holes 9 in the mounting groove 8.

As shown in fig. 3-5, the supporting assembly 2 includes a supporting seat 10 and an installation block 13, the supporting seat 10 is provided with a rotating shaft seat 11, the outer contour of the rotating shaft seat 11 is arc-shaped, an axial hole 12 is provided at the axial center of the rotating shaft seat 11, the rotating shaft is inserted therein in the assembled state, and the rotating shaft seat 11 is rotatably matched with the lumbar support assembly 3 through the rotating shaft.

As shown in fig. 6-10, the mounting block 13 is a U-shaped fixing member, and the mounting block 13 includes a cross member 20 and longitudinal members 21 connected to left and right ends of the cross member 20; the support seat 10 is arranged between the support 7 and the mounting block 13, and the mounting block 13 is provided with a screw passing hole 33 corresponding to the screw mounting hole 9 on the support 7; a plurality of clamping grooves 14 are symmetrically arranged on the inner end surface 22 of the longitudinal member 21 along the vertical direction; ribbed plates 15 respectively extend from the two sides of the supporting seat 10 to the left and right, and elastic clamping strips 16 are respectively arranged at the outer side ends of the ribbed plates 15; the elastic clamping strip 16 is a plastic component with certain toughness, and a certain gap is formed between the elastic clamping strip 16 and the ribbed plate 15, so that the elastic clamping strip 16 can deform towards the ribbed plate 15; the upper end of the elastic clamping strip 16 is provided with an arc-shaped clamping head 17 protruding outwards, and the clamping head 17 can be clamped and matched with the clamping groove 14 on the longitudinal piece 13; the end surfaces of the ribbed plates 15 at the left end and the right end, which face the mounting block 13, are respectively and symmetrically provided with sliding strips 18; the inner end surface 22 of the longitudinal member 21 is correspondingly provided with a sliding groove 19.

When the supporting seat 10 is matched with the mounting block 13 and the bracket 7, the supporting seat 10 is in sliding fit with the mounting block 13, namely, the elastic clamping strip 16 on the supporting seat 10 is pressed to enable the clamping connector 17 to deform and contract towards the ribbed plate 15 and then to be in clamping fit with the clamping groove 14 on the mounting block 13, then the sliding strip 18 on the supporting seat 10 is embedded into the sliding groove 19 on the mounting block 13, and the sliding strip 18 can slide in the sliding groove 19; after the supporting seat 10 is in sliding fit with the mounting block 13, the screw passing hole 33 on the mounting block 13 is matched with the screw mounting hole 9 on the bracket 7, and the mounting block 13 is fixed on the bracket 7 through a screw; the support seat 10 is installed in the installation clamping groove 8 in the bracket 7, the rotating shaft seat 11 on the support seat 10 is exposed and protrudes out of a gap between the two longitudinal pieces 21, and the support seat 10 cannot be separated from the installation block 13 because the slide bar on the support seat 10 is embedded in the slide groove of the installation block 13.

As shown in fig. 3, 4, 11, and 12, the lumbar support component 3 is a frame shaped like a Chinese character kou, the lumbar support component 3 includes left and right frame sides 231 and 232 and upper and lower frame sides 242 and 241 connected to two ends of the left and right frame sides 231 and 232, a fastening portion 25 is disposed at a middle position of the lower frame side 241, the fastening portion 25 extends upward beyond the lower frame side 241, the fastening portion 25 includes two rotating support plates 26 at two sides and a fastening rear cover 27, through holes 31 corresponding to the hole positions of the shaft holes 12 at the axial center of the rotating shaft seat 11 are symmetrically disposed on the two rotating support plates 26, an opening groove 28 is formed between the rotating support plate 26 and the fastening rear cover 27, and the opening groove 28 can be rotatably installed with the rotating shaft seat 11 on the support seat 10, specifically: be equipped with a spring in open slot 28 and support seat 11's upper end position correspondence and be equipped with spring mounting hole 29, when the waist leans on subassembly 3 and supporting seat 10 equipment, arrange spring 30 one end in spring mounting hole 29 of pivot seat 11 upper end in, spring 30 other end butt is in spring abutting hole 32 on buckling part 25, then will rotate through-hole 31 on the backup pad 26 and align with the shaft hole 12 hole site of pivot seat 11 axle center department, make buckling part 25 and pivot seat 11 normal running fit through the pivot, snap-fit back 25 and pivot seat 11 lock together with the buckling part after the normal running fit, lock back lid 27 can cover pivot seat 11 completely.

As shown in fig. 12-14, the support seat 10 of the support assembly 2 can slide up and down along the support 7 of the back frame 1, when the elastic clamping strip 16 of the support seat 10 is clamped with the lowest clamping groove 14 of the longitudinal member 21 of the mounting block 13, the upper frame side 242 of the lumbar support assembly 3 is located at the same height as the back frame cross bar 6, and when the elastic clamping strip 16 of the support assembly 2 is clamped and matched with the other clamping grooves on the two sides of the mounting block 13, the upper frame side 242 of the lumbar support assembly 3 is located above the back frame cross bar 6; the waist-rest component upwards exceeds the cross rod of the back frame, and the waist-rest component is kept in front of the cross rod of the back frame, so that the waist-rest component 3 always props against the waist of a human body to provide supporting force for the human body.

As shown in fig. 13 and 14, when a human body uses the chair, the human body moves in the front-back direction, the waist of the human body applies different pressures to the lumbar support assembly 3, so that the spring 30 arranged between the lumbar support assembly 3 and the support assembly 10 is stressed to deform, and the lumbar support assembly 3 automatically rotates around the rotating shaft seat 11 on the support assembly 2 in the front-back direction by different angles according to the applied pressures to fit the waist of the human body; when the human body leaves the chair, the spring 30 restores the deformation and provides the restoring elasticity to restore the waist rest component 3; the height of the waist rest component 3 can be adjusted up and down according to different heights of users so as to meet the requirements of different human body heights; in conclusion, the waist support backrest structure can adjust the height of the waist support according to the requirements of users, and the waist support can automatically rotate to fit the waist of the human body when in use, thereby conforming to human engineering.

As shown in fig. 15, the utility model provides a chair then, include elasticity waist support back structure, the frame that encloses at top horizontal pole 5 of back of the body frame 1, about montant 4 and back of the body frame horizontal pole 6 coats outward and has flexible supporting network 34 to provide better supporting effect, improve and use the travelling comfort.

Claims

1. An elasticity waist support back structure which characterized in that: comprises a back frame, a supporting component and a waist rest component; the back frame middle part is equipped with the support, and the supporting component sets up on the support, the waist leans on the intermediate position and the supporting component normal running fit of subassembly, and the waist leans on to be equipped with resilient means between subassembly and the supporting component, and the waist leans on subassembly and supporting component to rotate hookup location and the resilient means position of establishing to stagger from top to bottom, and the waist leans on the subassembly to rotate to make resilient means produce deformation and provide elasticity that resets.

2. The elastic lumbar support backrest structure according to claim 1, characterized in that: the back frame comprises vertical rods arranged at left and right intervals, a back frame cross rod is connected between the middle parts of the left and right vertical rods, a top cross rod is arranged at the upper end of the left and right vertical rods, and the vertical support is arranged in the middle of the back frame cross rod.

3. The elastic lumbar support backrest structure according to claim 2, characterized in that: the supporting component comprises a supporting seat, the supporting seat and the support can move relatively, and the waist rest component is rotatably connected with the supporting seat.

4. The elastic lumbar support backrest structure according to claim 3, characterized in that: the supporting seat comprises a rotating shaft seat, and the waist rest component is in rotating fit with the rotating shaft seat through a rotating shaft; the elastic device is a spring, at least one of the rotating shaft seat or the waist rest assembly is provided with a spring mounting hole, and the spring is arranged in the spring mounting hole.

5. The elastic lumbar support backrest structure according to claim 3, characterized in that: the supporting component further comprises an installation block, the supporting seat is arranged between the installation block and the support, the supporting seat is in sliding fit with the installation block or the support, and the installation block is fixed on the support.

6. The elastic lumbar support backrest structure according to claim 5, wherein: the mounting block be the mounting of U type, the mounting block passes through the screw to be installed on the support, mounting block bilateral symmetry is equipped with a plurality of draw-in grooves, the supporting seat both sides be equipped with elasticity card strip, elasticity card strip is through the elasticity salient point and the draw-in groove joint cooperation of taking certainly.

7. The elastic lumbar support backrest structure according to claim 6, wherein: the two ends of the rotating shaft seat extend to form ribbed plates in the left-right direction, and the elastic clamping strip is formed at the outer side end of each ribbed plate.

8. The elastic lumbar support backrest structure according to claim 7, wherein: the end face, facing the mounting block, of the rib plate is provided with a sliding strip, a sliding groove is formed in the corresponding position of the mounting block, and the sliding strip is buckled in the sliding groove.

9. The elastic lumbar support backrest structure of claim 8, wherein: the mounting block comprises a transverse piece and longitudinal pieces connected to the left end and the right end of the transverse piece, the rotating shaft seat is exposed out of a gap between the two longitudinal pieces, and the clamping groove and the sliding groove are formed in the inner end face of each longitudinal piece.

10. The elastic lumbar support backrest structure according to claim 4, wherein: the waist leans on the subassembly to be the frame of "mouth" style of calligraphy, the waist leans on the subassembly to include left and right frame side and connect in the upper and lower frame side at left and right frame side both ends the lower frame side middle part on be equipped with a buckling parts, the buckling parts lock on the pivot seat, and the buckling parts is connected through pivot and pivot seat rotation.

11. The elastic lumbar support backrest structure of claim 10, wherein: when the supporting seat moves upwards along the support, the upper frame side of the waist rest component exceeds the cross bar of the back frame or is at the same height with the cross bar of the back frame.

12. The elastic lumbar support backrest structure according to claim 2, characterized in that: a frame enclosed by the top cross rod, the left vertical rod, the right vertical rod and the back frame cross rod is coated with a flexible supporting net.