CN212878511U - Chair back lifting adjusting device and chair - Google Patents
Chair back lifting adjusting device and chair Download PDFInfo
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- CN212878511U CN212878511U CN202022219957.9U CN202022219957U CN212878511U CN 212878511 U CN212878511 U CN 212878511U CN 202022219957 U CN202022219957 U CN 202022219957U CN 212878511 U CN212878511 U CN 212878511U
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Abstract
The utility model discloses a chair back lifting adjusting device and a chair, which comprises a chair back component and a bracket; the chair back component is connected on the bracket in a sliding way; one of the bracket or the chair back component is provided with a sliding supporting block, the other one of the bracket or the chair back component is correspondingly and longitudinally provided with a sliding groove, and the sliding supporting block is in sliding fit with the sliding groove; a gear adjusting mechanism is also arranged between the chair back component and the bracket, and the gear adjusting mechanism comprises an elastic glass bead and a positioning groove in clamping fit with the elastic glass bead; the elastic glass beads are arranged on one of the chair back component or the bracket, and the positioning grooves are longitudinally distributed on the other of the chair back component or the bracket; the chair back component slides relative to the bracket, and the elastic glass beads are clamped and matched with the positioning grooves to realize the gear lifting adjustment of the chair back component; the chair, the chair back component and the bracket are simple in connecting structure, and the cost is saved; and the elastic glass beads are clamped with the positioning grooves, so that the gear feeling is obvious, and the positioning is accurate.
Description
Technical Field
The utility model relates to a thing to sit on field, in particular to back of chair lift adjustment device and seat.
Background
Most of the existing height-adjustable chair backs adopt the matching of an adjusting rod and a sawtooth-shaped adjusting groove for adjustment. "back of chair height adjustment device" as application No. 201020217501.2, including a back of chair connecting piece and a seat support connecting piece, back of chair connecting piece is provided with a plurality of intercommunicating highly select jack that is sword saw form, and the seat support connecting piece is provided with an installation jack and a card solid hole that is linked together with the installation jack, has inserted between highly select jack and the installation jack and has been put a height adjusting part, and height adjusting part's one end is detained and is established on back of chair connecting piece, and the other end is detained and is established on the seat support connecting piece. Although the device is simple to operate, the number of parts is not reduced, the chair back connecting piece sleeved on the chair seat connecting piece and the chair seat connecting piece are also required to be provided with a comfortable backrest, the sizes of the parts are large, the appearance is not attractive, and the backrest is inconvenient to place; meanwhile, the serrated adjusting structure is easy to clamp, the height adjusting function cannot be used for a long time after the serrated adjusting structure is used, the service life is short, the popular structure is not suitable for the structure of a modern office chair, the number of applicable chairs is small, and the function is single.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a chair back lifting adjusting device which is simple in structure and convenient to operate, and the device realizes sliding fit between a chair back component and a bracket through a sliding supporting block and a sliding groove which are arranged on the chair back component and the bracket; the bracket is provided with an elastic glass bead, and positioning grooves are correspondingly and longitudinally arranged on the chair back component; then when the chair back component slides relative to the bracket, the elastic glass beads are clamped and matched with the positioning grooves to realize the gear lifting adjustment of the chair back component; the lifting adjustment of the chair back component is smooth, the structure is simple, and the cost can be reduced.
The technical scheme of the utility model is realized like this:
a chair back lifting adjusting device comprises a chair back component and a bracket for supporting the chair back component; the chair back component is connected to the bracket in a sliding way; one of the bracket or the chair back component is provided with a sliding supporting block, the other one of the bracket or the chair back component is correspondingly and longitudinally provided with a sliding groove, and the sliding supporting block is in sliding fit with the sliding groove; a gear adjusting mechanism is also arranged between the chair back component and the bracket, and the gear adjusting mechanism comprises an elastic glass bead and a positioning groove in clamping fit with the elastic glass bead; the elastic glass beads are arranged on one of the chair back component or the bracket, and the positioning grooves are longitudinally distributed on the other of the chair back component or the bracket; the chair back component slides relative to the support, and the elastic glass beads are matched with the positioning grooves in a clamping mode to achieve gear lifting adjustment of the chair back component.
Preferably, the sliding support block is arranged on the bracket, and the sliding groove is longitudinally arranged at the rear end of the chair back component; the chair back component is in front-back butt joint with the bracket to enable the sliding supporting block to be in sliding fit with the sliding groove. The chair back component and the bracket are only required to be butted front and back, and the connection is quick and convenient.
Preferably, the bracket is provided with a sliding connection seat, and the sliding support blocks are arranged at two ends of the sliding connection seat in a bilateral symmetry manner; correspondingly, the sliding grooves are symmetrically arranged at the rear end of the chair back component.
Preferably, the chair back assembly comprises a front back frame and a back frame; a connecting plate is arranged between the front back frame and the back frame, and after the sliding support block is in sliding fit with the sliding chute, the connecting plate is fixedly connected with the sliding support block so as to limit the sliding support block to be separated from the sliding chute; and after the back frame is in sliding fit with the support, the front back frame is fixedly connected with the back frame. The connection between the back frame and the bracket is stable through the connecting plate.
Preferably, a guide groove is longitudinally arranged on the end face of the connecting plate close to the back frame, and a guide strip is correspondingly arranged on the inner wall of the back frame; the connecting plate and the bracket are relatively fixed; and in the sliding process of the chair back component along the bracket, the connecting plate slides relative to the back frame. Be equipped with guide way and gib block between connecting plate and back frame for back of the chair subassembly when sliding relative support smooth and easy, be difficult to block and pause.
Preferably, the elastic glass bead is arranged in the middle of the sliding connection seat; the positioning grooves are longitudinally arranged on the back of the chair back component at intervals correspondingly. The elastic glass bead is arranged in the middle of the connecting seat, so that the clamping effect of the elastic glass bead and the positioning groove is better, and the elastic glass bead is not easy to loosen.
Preferably, a connecting hole is arranged at the middle position of the sliding connecting seat, the elastic glass bead is arranged in the connecting hole, and the head of the elastic glass bead protrudes out of the sliding connecting seat; after the seat component is connected with the support, the elastic glass beads are clamped between the seat component and the support. The elastic glass beads are not required to be fixedly connected with the support through screws, and only need to be placed in the connecting holes, so that the installation is convenient.
Preferably, the elastic glass bead comprises a connecting column and a bead head positioned at the end part of the connecting column, and an elastic element is arranged between the bead head and the connecting column so that the bead head can elastically stretch relative to the connecting column; the connecting column is inserted into the connecting hole.
Preferably, the elastic glass bead comprises a connecting column and a bead head positioned at the end part of the connecting column, the bead head and the connecting column are integrally formed, the elastic glass bead is arranged in the connecting hole, and an elastic element is arranged between the elastic glass bead and the hole bottom of the connecting hole so that the bead head can elastically stretch relative to the connecting hole.
A chair comprises a base and a chair rod connected to the base, wherein the chair rod is longitudinally arranged, and the chair rod is provided with a chair back lifting adjusting device; the support is connected to the support rod.
Adopted above-mentioned technical scheme the utility model discloses a design departure point, theory and beneficial effect are:
firstly, the chair back component and the bracket are matched with the sliding support block through the sliding chute to realize the sliding fit of the chair back component and the bracket, the structure is simple, and the connection is convenient; in the process of adjusting the chair back component in a lifting way relative to the bracket, the sliding support block is fixed, the chair back component slides up and down through the chute, and the gear lifting adjustment of the chair back component is realized through the matching of the elastic glass beads and the positioning grooves; the gear sense is obvious when the chair back component is lifted, and the positioning is more accurate; the adjustment is smooth and the adjustment has good hand feeling.
Secondly, the chair back component is divided into a front back frame and a back frame, and the sliding groove is arranged on the back frame; a connecting plate is arranged between the back frame and the front back frame, and after the back frame is in sliding fit with the bracket, the connecting plate is fixedly connected with the sliding support block through screws, and then the front back frame is fixedly connected with the back frame; the sliding support block can be effectively limited to be separated from the sliding groove through the connecting plate, and the chair back component is more stably connected with the support.
After the chair back component is connected with the bracket, the chair back component and the bracket are attached together in a front-back manner and are tightly connected, so that the connecting structure is hidden; the overall appearance of the seat is simpler and more attractive, and the seat accords with modern aesthetics.
Drawings
Fig. 1 is a schematic perspective view of a chair back assembly and a bracket according to an embodiment of the present invention;
fig. 2 is a schematic perspective view of the connection between the back frame and the bracket in the embodiment of the present invention;
FIG. 3 is a rear view of a chair back assembly in an embodiment of the present invention;
fig. 4 is a schematic perspective view of a bracket according to an embodiment of the present invention;
fig. 5 is a schematic perspective view of the connection between the support and the support rod according to the embodiment of the present invention;
fig. 6 is a schematic perspective view of a seat according to an embodiment of the present invention.
The figures are numbered: a seat back assembly 1; a bracket 2; a sliding support block 3; a chute 4; 5, glass beads; a connecting column 5 a; a bead head 5 b; a positioning groove 6; a front and back frame 7; a back frame 8; a supporting vertical rod 9; a slide connection holder 10; a connecting plate 11; a cutting 12; a slot 13; a guide groove 14; a guide strip 15; a connecting hole 16; a base A; a chair rod B.
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 4, the present invention provides a chair back lifting adjusting device, which comprises a chair back component 1 and a bracket 2 for supporting the chair back component 1; the bracket 2 is provided with a sliding supporting block 3, and the chair back component 1 is correspondingly and longitudinally provided with a sliding groove 4; the chair back component 1 and the bracket 2 are in front-back butt joint, so that the sliding support block 3 is in sliding fit with the sliding groove 4; the chair back component 1 and the bracket 2 are also provided with a gear adjusting mechanism, the gear adjusting mechanism comprises an elastic glass bead 5 arranged on the bracket 2, the elastic glass bead 5 can elastically stretch, and positioning grooves 6 which are clamped and matched with the elastic glass bead 5 are correspondingly and longitudinally arranged on the chair back component 1; by the structure, the chair back component 1 can be lifted and lowered relative to the bracket 2; the connection structure between the two is simple, the operation is convenient, and the cost is lower; and back of the chair subassembly 1 relative support 2 slip in-process, utilize elasticity glass pearl 5 and constant head tank 6's joint cooperation for back of the chair subassembly 1 lift in-process, the gear feels obvious, has many gears and adjusts, fixes a position accurately.
As shown in fig. 1-2, the chair back assembly 1 includes a front back frame 7 and a back frame 8, the front back frame 7 and the back frame 8 are connected and fixed by screws, and during installation, the back frame 8 is firstly in sliding fit with the bracket 2, and then the front back frame 7 is connected and fixed with the back frame 8; specifically, the method comprises the following steps: the upper end of the bracket 2 is provided with a longitudinal supporting rod 9, and a sliding connecting seat 10 is arranged in the middle of the longitudinal supporting rod 9; the sliding support blocks 3 are arranged at two ends of the sliding connection seat 10 just in bilateral symmetry, and the sliding support blocks 3 protrude forwards from the bracket 2; the back frame 8 is correspondingly and longitudinally provided with two sliding chutes 4, the two sliding chutes 4 are arranged in bilateral symmetry, and the distance between the two sliding chutes 4 is equal to the distance between the two sliding support blocks 3; then when the seat component 1 is connected with the bracket 2, the back frame 8 is butted with the bracket 2 in a front-back manner, so that the two sliding support blocks 3 are respectively positioned in the two sliding grooves 4; after the sliding support block 3 is in sliding fit with the sliding groove 4, a connecting plate 11 connected with the sliding support block 3 is arranged between the back frame 8 and the front back frame 7; the sliding support block 3 is provided with a forward protruding inserting strip 12, after the sliding support block 3 is in sliding fit in the sliding groove 4, the inserting strip 12 continuously protrudes forward from the back frame 8; the connecting plate 11 is correspondingly provided with a slot 13; then, after the inserting strips 12 on the sliding support blocks 3 are inserted into the slots 13 on the connecting plate 11, the connecting plate 11 and the sliding support blocks 3 are fixedly connected through screws; the sliding support block 3 is connected with the sliding support block 3 through the connecting plate 11 so as to effectively limit the sliding support block 3 to be separated from the chute 4; in addition, guide grooves 14 are longitudinally arranged on the contact surface of the connecting plate 11 and the back frame 8 at intervals, and guide strips 15 are correspondingly longitudinally arranged on the inner wall of the back frame 8 at intervals; after the connecting plate 11 is connected with the sliding support block 3, the guide strip 15 is in sliding fit with the guide groove 14; so that the connecting plate 11 can slide relative to the back frame 8, and then the sliding between the back frame 8 and the bracket 2 is smooth.
As shown in fig. 3 and 4, a connection hole 16 is further formed at the middle position of the slide connection socket 10, and the elastic bead 5 includes a connection column 5a and a bead head 5b located at the end of the connection column; an elastic element is arranged between the bead head and the connecting column so that the bead head 5b can elastically stretch relative to the connecting column 5a, the elastic element can adopt a pressure spring, and two ends of the elastic element are respectively fixedly connected with the bead head 5b and the connecting column 5 a; the elastic glass bead 5 is installed in the connecting hole 16, that is, the connecting column 5a on the elastic glass bead 5 is inserted into the connecting hole 16, and the bead head 5b is exposed out of the outer surface of the sliding connection seat 10, and the bead head 5b is compressed to be contracted in the connecting hole 16.
Of course, another mode can be adopted, that is, the bead head 5b and the connecting column 5a are integrally formed, the elastic bead 9 is integrally arranged in the connecting hole 10, only the bead head 5b is exposed out of the hole opening of the connecting hole 10, and an elastic element (not shown) is arranged between the elastic bead 9 and the hole bottom of the connecting hole to enable the bead head 9b to elastically stretch relative to the connecting hole; the elastic element can also be a compression spring.
The positioning grooves 6 are correspondingly arranged at the rear end of the back frame 8, the positioning grooves 6 are positioned in the middle of the two sliding chutes 4, and the positioning grooves 6 are longitudinally and closely arranged; then, after the back frame 8 is in sliding fit with the support 2, the elastic glass beads 5 are clamped between the back frame 8 and the support 2, and the bead heads 5b are just clamped with the positioning grooves 6; at this moment, the connection of the back frame 8 and the support 2 is completed, and then the front back frame 7 and the back frame 8 are connected and fixed through screws, so that the installation of the chair back component 1 and the support 2 is completed.
In addition, when a user leans on the chair back component 1, the human body applies backward pressure to the chair back component 1, so that the back frame 8 and the supporting longitudinal rod 9 are mutually extruded, and friction force is generated between the two; the bead head 5b of the elastic glass bead 5 is clamped in the positioning groove 6; so that the connection between the back frame 8 and the supporting longitudinal rod 9 is tight; then the chair back component 1 can not be loosened from the supporting longitudinal rod 9 in the using process; the chair back component 1 can be fixed and stopped at a set position; when the height of the chair back is adjusted, a user leaves the chair back component 1 and applies force to the chair back component 1 in the vertical direction, so that the elastic glass beads 5 elastically contract, and then the chair back component 1 can slide along the supporting vertical rods 9; the structural design is more reasonable.
In conclusion, the chair back component 1 and the bracket 2 adopt the connecting structure, and the chair back component 1 can be lifted and lowered relative to the bracket 2 through the matching of the sliding support block 3 and the sliding groove 4, so that the structure is simple and effective, and the cost is effectively saved; and through the cooperation between elasticity glass bead 5 and the constant head tank 6 for back of the chair subassembly 1 is in the lift adjustment in-process, and the gear sense is very obvious, has a plurality of gears to adjust, adjusts and feels good, fixes a position accurately.
As shown in fig. 5 and 6, the utility model provides a chair, which comprises a base a and a chair rod B longitudinally arranged on the base a, wherein the support 2 is connected to the chair rod B; so that the chair back component 1 of the chair can be adjusted to be lifted and lowered; and the chair back component 1 and the bracket 2 are connected front and back, and the connection is tight, and the connection part has no connection trace, so that the whole is simple and beautiful, and the modern aesthetic feeling is more met.
The above description in this specification is merely illustrative of the present invention. Various modifications, additions and substitutions for the specific embodiments described herein will be apparent to those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (10)
1. A chair back lifting adjusting device is characterized in that: comprises a chair back component and a bracket for supporting the chair back component; the chair back component is connected to the bracket in a sliding way; one of the bracket or the chair back component is provided with a sliding supporting block, the other one of the bracket or the chair back component is correspondingly and longitudinally provided with a sliding groove, and the sliding supporting block is in sliding fit with the sliding groove; a gear adjusting mechanism is also arranged between the chair back component and the bracket, and the gear adjusting mechanism comprises an elastic glass bead and a positioning groove in clamping fit with the elastic glass bead; the elastic glass beads are arranged on one of the chair back component or the bracket, and the positioning grooves are longitudinally distributed on the other of the chair back component or the bracket; the chair back component slides relative to the support, and the elastic glass beads are matched with the positioning grooves in a clamping mode to achieve gear lifting adjustment of the chair back component.
2. The chair back up-down adjustment device of claim 1, wherein: the sliding support block is arranged on the bracket, and the sliding groove is longitudinally arranged at the rear end of the chair back component; the chair back component is in front-back butt joint with the bracket to enable the sliding supporting block to be in sliding fit with the sliding groove.
3. The chair back up-down adjustment device of claim 2, wherein: the bracket is provided with a sliding connecting seat, and the sliding supporting blocks are arranged at two ends of the sliding connecting seat in a bilateral symmetry manner; correspondingly, the sliding grooves are symmetrically arranged at the rear end of the chair back component.
4. The chair back up-down adjustment device of claim 2, wherein: the chair back component comprises a front back frame and a back frame; a connecting plate is arranged between the front back frame and the back frame, and after the sliding support block is in sliding fit with the sliding chute, the connecting plate is fixedly connected with the sliding support block so as to limit the sliding support block to be separated from the sliding chute; and after the back frame is in sliding fit with the support, the front back frame is fixedly connected with the back frame.
5. The chair back up-down adjustment device of claim 4, wherein: the end surface of the connecting plate close to the back frame is longitudinally provided with a guide groove, and the inner wall of the back frame is correspondingly provided with a guide strip; the connecting plate and the bracket are relatively fixed; and in the sliding process of the chair back component along the bracket, the connecting plate slides relative to the back frame.
6. The chair back up-down adjustment device of claim 3, wherein: the elastic glass bead is arranged in the middle of the sliding connection seat; the positioning grooves are longitudinally arranged on the back of the chair back component at intervals correspondingly.
7. The chair back up-down adjustment device of claim 6, wherein: a connecting hole is arranged at the middle position of the sliding connecting seat, the elastic glass bead is arranged in the connecting hole, and the head of the elastic glass bead protrudes out of the sliding connecting seat; after the seat component is connected with the support, the elastic glass beads are clamped between the seat component and the support.
8. The chair back riser adjustment mechanism of claim 7, wherein: the elastic glass bead comprises a connecting column and a bead head positioned at the end part of the connecting column, and an elastic element is arranged between the bead head and the connecting column so that the bead head can elastically stretch relative to the connecting column; the connecting column is inserted into the connecting hole.
9. The chair back riser adjustment mechanism of claim 7, wherein: the elastic glass bead comprises a connecting column and a bead head positioned at the end part of the connecting column, the bead head and the connecting column are integrally formed, the elastic glass bead is arranged in the connecting hole, and an elastic element is arranged between the elastic glass bead and the hole bottom of the connecting hole so that the bead head can elastically stretch relative to the connecting hole.
10. A seat, characterized by: the chair comprises a base and a chair rod connected to the base, wherein the chair rod is longitudinally arranged, and the chair rod is provided with a chair back lifting adjusting device according to any one of claims 1 to 9; the bracket is connected to the chair rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022219957.9U CN212878511U (en) | 2020-09-30 | 2020-09-30 | Chair back lifting adjusting device and chair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022219957.9U CN212878511U (en) | 2020-09-30 | 2020-09-30 | Chair back lifting adjusting device and chair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212878511U true CN212878511U (en) | 2021-04-06 |
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ID=75260898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022219957.9U Active CN212878511U (en) | 2020-09-30 | 2020-09-30 | Chair back lifting adjusting device and chair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212878511U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113662380A (en) * | 2021-06-18 | 2021-11-19 | 圣奥科技股份有限公司 | Chair back adjusting assembly for chair and chair |
-
2020
- 2020-09-30 CN CN202022219957.9U patent/CN212878511U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113662380A (en) * | 2021-06-18 | 2021-11-19 | 圣奥科技股份有限公司 | Chair back adjusting assembly for chair and chair |
| CN113662380B (en) * | 2021-06-18 | 2024-06-07 | 圣奥科技股份有限公司 | Chair back adjusting assembly for chair and chair |
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