CN219680148U - Lifting clamping mechanism, chair back and chair - Google Patents
Lifting clamping mechanism, chair back and chair Download PDFInfo
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- CN219680148U CN219680148U CN202320387420.4U CN202320387420U CN219680148U CN 219680148 U CN219680148 U CN 219680148U CN 202320387420 U CN202320387420 U CN 202320387420U CN 219680148 U CN219680148 U CN 219680148U
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Abstract
The utility model provides a lifting clamping mechanism, a chair back and a chair, which solve the problems that the existing chair can not independently lift a lumbar support and can not adjust the relative change height of the lumbar support. The lifting clamping mechanism comprises a lifting guide plate and a lifting seat, a multi-gear clamping structure and a guide structure are arranged on the lifting guide plate, an elastic clamping component and a sliding guide component are arranged in the lifting seat, the elastic clamping component and the multi-gear clamping structure form locking connection or movable connection, the sliding guide component forms lifting sliding connection along the guide structure, and the lifting seat is fixed with the lifting guide plate through the locking structure. According to the utility model, through the tooth meshing clamping structure of the rack and the teeth, the steering spring force is adopted to carry out elastic pressing, the lifting mode and the locking mode are switched through the reciprocating swing of the teeth, the lifting adjustment of the independent waist rest is completed, and the device is widely suitable for the waist and back fitting support of human bodies with different heights and body shapes, and improves the use comfort. The structure has simple lifting and locking switching operation and strong adjustment flexibility.
Description
Technical Field
The utility model belongs to the technical field of furniture, and relates to a multifunctional seat, in particular to a lifting clamping mechanism, a chair back and a chair.
Background
The chair is a daily furniture, a seat with a backrest and armrests. Modern chairs are attractive and fashionable, and some chairs are not used as seats alone, so that the life of people is more convenient under the combination of science and technology. With the improvement of life quality, the functional requirements of people on furniture are increasing, and thus, the chair cannot be limited to the function of seating.
For example, chinese patent literature discloses a pedal stepless lifting chair for children learning [ chinese patent No.: 202122455992.5 the utility model discloses a pedal stepless lifting children learning chair, comprising a children learning chair and a back rod which are matched with each other, and a pedal lifting mechanism which is composed of a lifting component and a pedal reciprocating motion component, wherein the lifting of the lifting component is mainly realized by a sliding screw pair formed by a screw rod, a threaded sleeve inner pipe, an upper shaft sleeve, an outer pipe and a lower shaft sleeve, thus the stepless adjustment of the lifting height can be realized, a larger transmission ratio is provided, the effect that the children can also lift and adjust when sitting on the chair is realized, and a ratchet component in the pedal reciprocating motion component is matched with the design of a torsion spring, so that the pedal piece can be automatically reset after being stepped on, the user experience is improved, the operation efficiency is improved, and the pedal operation mode is easier and more convenient for a user to operate.
According to the technical scheme, although the lifting function of the seat is realized, the whole seat is lifted, the lumbar support cannot be lifted independently, and particularly, the relative change supporting height of the lumbar back position cannot be correspondingly adjusted for people with different heights and body types, so that the adjustment flexibility is lacked, and the limitation is large.
Disclosure of Invention
The utility model aims at solving the problems in the prior art and provides a lifting clamping mechanism, a chair back and a chair, wherein the lifting clamping mechanism is used for independently realizing the lifting of a lumbar support by adopting a clamping tooth to be matched with an elastic locking position.
The aim of the utility model can be achieved by the following technical scheme: the utility model provides a lift screens mechanism, includes lift baffle and lifting seat, set up multi-gear screens structure and guide structure on the lift baffle, install elastic screens subassembly and guide smooth subassembly in the lifting seat, elastic screens subassembly with multi-gear screens structure forms locking connection or swing joint, guide smooth subassembly is followed guide structure forms the lift and slides and connect, the lift seat with it is fixed through locking structure between the lift baffle.
In the lifting clamping mechanism, the multi-gear clamping structure is a rack groove vertically arranged on the lifting guide plate, the rack groove is provided with a rectangular groove body, and a plurality of gear tooth grooves are arranged on one long side of the rectangular groove body in a concave manner; the elastic clamping component comprises a tooth piece and a spring, wherein clamping teeth are convexly arranged on the tooth piece, the clamping teeth are embedded into any gear tooth groove to be clamped and positioned, and the spring is abutted between the lifting seat and the tooth piece through elastic pressing force.
In the lifting clamping mechanism, the back side of the lifting seat is provided with the mounting groove, and the mounting groove is formed by communicating a spring positioning area and a tooth moving area; the spring is specifically a torsion spring, the spring positioning area is provided with a positioning column, the torsion spring is sleeved on the positioning column to form rotary connection, one torsion arm of the torsion spring is abutted against the groove wall of the spring positioning area, and the other torsion arm is abutted against the side wall of the tooth piece; the tooth moving area is concavely provided with a vertical groove, and the tooth piece is embedded into the vertical groove through a rotating shaft to form a swing and lifting combined action.
In the lifting clamping mechanism, the tooth piece is provided with a limiting hook and a limiting angle, a gear groove and a gear angle groove are correspondingly concavely formed in the groove wall of the tooth moving area, the limiting hook is positioned in the gear groove to form hooking fixation, and the limiting angle is positioned in the gear angle groove to form blocking fixation.
In the lifting clamping mechanism, the limiting hook is provided with a convex arc hook head, the inlet of the gear groove is correspondingly convexly provided with an arc protrusion, and the arc hook head and the arc protrusion are mutually hooked to form clamping positioning so as to prevent tooth pieces from being separated.
In the lifting clamping mechanism, the guide structure comprises two parallel guide rails concavely arranged on the lifting guide plate, the two guide rails are respectively positioned on two sides of the rack groove, the sliding guide assembly comprises two parallel sliding strips convexly arranged on the lifting seat, and the two sliding strips are embedded into the two guide rails in a one-to-one correspondence manner to form sliding connection.
In the lifting clamping mechanism, the locking structure comprises two parallel guide through grooves formed in the lifting guide plate, the two guide through grooves are respectively located on two sides of the rack groove, the lifting seat is connected with two fixing blocks through screws, and the two screws are correspondingly connected with the two guide through grooves in a penetrating manner in a one-to-one mode and are connected in a sliding mode or locked and fixed.
In the lifting clamping mechanism, the back side of the lifting seat is provided with the mounting groove, and the mounting groove is formed by communicating a spring positioning area and a tooth moving area; the spring is specifically a compression spring, one end of the compression spring is abutted against the groove wall of the spring positioning area, and the other end of the compression spring is abutted against the side wall of the tooth piece; the tooth moving area is concavely provided with a vertical groove, and the tooth piece is embedded into the vertical groove through a rotating shaft to form a swing and lifting combined action.
A chair back comprises a backrest frame, a waist rest and the lifting clamping mechanism.
In the chair back, an assembly groove is concavely formed in the inner side of the backrest frame, and the lifting guide plate is fixedly arranged in the assembly groove through a screw; the outer side of the lifting seat is convexly provided with a hinge seat, and the waist rest is rotatably arranged in the hinge seat through a middle shaft.
A chair comprises the chair back.
Compared with the prior art, the lifting clamping mechanism and the chair back and the chair have the following beneficial effects:
1. through the tooth meshing joint structure of rack and tooth, adopt to turn to spring force and carry out elasticity pressure and hold, realize the switching of lift mode and locking mode through the reciprocal pendulum of tooth, accomplish the lift adjustment of independent waist back, extensively adapt to the human waist of different heights, physique and support, improve the comfort level of use.
2. The structure has the advantages of simple lifting and locking switching operation, strong adjustment flexibility, stable and firm clamping and positioning, meets the requirements of the contemporary society on the service performance of furniture, and has good market prospect.
Drawings
Fig. 1 is a front perspective view of a first embodiment of the present utility model.
Fig. 2 is a rear perspective view of a first embodiment of the present utility model.
Fig. 3 is a plan view of a lifting guide plate according to a first embodiment of the present utility model.
Fig. 4 is a structural diagram of a lifting seat in a first embodiment of the present utility model.
Fig. 5 is a perspective view showing a tooth member according to the first embodiment of the present utility model.
Fig. 6 is a view showing an internal elevation state of the elevating seat according to the first embodiment of the present utility model.
Fig. 7 is a diagram showing an internal locking state of the lifting seat according to the first embodiment of the present utility model.
Fig. 8 is a structural diagram of a lifting seat in a second embodiment of the present utility model.
Fig. 9 is an internal structure diagram of a lifting seat in a third embodiment of the present utility model.
Fig. 10 is a perspective view of the chair back.
In the figure, 1, a lifting guide plate; 1a, a rack groove; 1b, guiding through grooves; 1c, a guide rail; 2. a lifting seat; 2a, a mounting groove; 2b, positioning columns; 2c, vertical grooves; 2d, sliding strips; 2e, a hinging seat; 3. tooth members; 3a, a rotating shaft; 3b, clamping teeth; 3c, a limiting hook; 3d, limiting angle; 4. a torsion spring; 5. a fixed block; 6. a backrest frame; 7. a waist rest; 8. a fixing strip; 9. compressing the spring.
Detailed Description
The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.
Example 1
As shown in fig. 1 to 7, the lifting clamping mechanism comprises a lifting guide plate 1 and a lifting seat 2, wherein a multi-gear clamping structure and a guiding structure are arranged on the lifting guide plate 1, an elastic clamping component and a sliding guiding component are arranged in the lifting seat 2, the elastic clamping component and the multi-gear clamping structure form locking connection or movable connection, the sliding guiding component forms lifting sliding connection along the guiding structure, and the lifting seat 2 and the lifting guide plate 1 are fixed through a locking structure.
The multi-gear clamping structure is a rack groove 1a vertically arranged on the lifting guide plate 1, the rack groove 1a is provided with a rectangular groove body, and a plurality of gear tooth grooves are arranged on one long side of the rectangular groove body in a concave manner; the elastic clamping component comprises a tooth piece 3 and a spring, wherein clamping teeth 3b are convexly arranged on the tooth piece 3, the clamping teeth 3b are embedded into any gear tooth groove for clamping and positioning, and the spring is abutted between the lifting seat 2 and the tooth piece 3 through elastic pressing force.
In a natural state, the clamping teeth 3b of the tooth piece 3 are pressed by a spring and are embedded into a gear tooth groove for clamping and fixing, namely, the height of the lifting seat 2 is determined; the external force acts on the tooth piece 3 to compress the spring, so that the clamping tooth 3b is separated from the gear tooth groove, namely the lifting seat 2 can move up and down.
The back side of the lifting seat 2 is provided with a mounting groove 2a, and the mounting groove 2a is formed by communicating a spring positioning area and a tooth moving area; the spring is specifically a torsion spring 4, a positioning column 2b is arranged in a spring positioning area, the torsion spring 4 is sleeved on the positioning column 2b to form rotary connection, one torsion arm of the torsion spring 4 is abutted against the groove wall of the torsion spring positioning area, and the other torsion arm is abutted against the side wall of the tooth piece 3; the tooth movable area is concavely provided with a vertical groove 2c, and the tooth piece 3 is embedded into the vertical groove 2c through a rotating shaft 3a to form a swing and lifting composite action. The torsion spring 4 and the tooth piece 3 are assembled in a distinguishing way through the mounting groove 2a, so that the moving mode and the moving range of the torsion spring and the tooth piece are limited. Through the mutual abutting action of the torsion spring 4 and the tooth piece 3, the tooth piece 3 rotates under the action of elastic tension.
The tooth piece 3 is provided with a limit hook 3c and a limit angle 3d, a gear groove and a gear angle groove are correspondingly concavely arranged on the groove wall of the tooth moving area, the limit hook 3c is positioned in the gear groove to form hooking fixation, and the limit angle 3d is positioned in the gear angle groove to form blocking fixation. The gear groove is positioned at the bottom of the mounting groove 2a, the gear angle groove is positioned at the upper part of the mounting groove 2a, a swinging range of the tooth piece 3 is formed between the gear groove and the gear angle groove, namely, the gear groove limits the lowest swinging position of the tooth piece 3, and the gear angle groove limits the highest swinging position of the tooth piece 3.
The limit hook 3c is provided with a convex arc hook head, the inlet of the gear groove is correspondingly provided with a convex arc protrusion, and the arc hook head and the arc protrusion are mutually hooked to form a clamping position so as to prevent the tooth piece 3 from being separated.
The guiding structure comprises two parallel guide rails 1c concavely arranged on the lifting guide plate 1, the two guide rails 1c are respectively positioned on two sides of the rack groove 1a, the sliding guide assembly comprises two parallel sliding strips 2d convexly arranged on the lifting seat 2, and the two sliding strips 2d are embedded into the two guide rails 1c in a one-to-one correspondence manner to form sliding connection. In the process of moving the lifting seat 2 up and down along the lifting guide plate 1, the sliding strips 2d on two sides move up and down along the guide rail 1c, so that the stability of displacement is improved while the guiding effect is achieved.
The locking structure comprises two parallel guide through grooves 1b formed in the lifting guide plate 1, the two guide through grooves 1b are respectively located on two sides of the rack groove 1a, the lifting seat 2 is connected with two fixing blocks 5 through screws, and the two screws are correspondingly connected with the two guide through grooves 1b in a penetrating manner one by one to form sliding connection or locking fixation. In the process that the lifting seat 2 moves up and down along the lifting guide plate 1, screws on two sides move up and down along the guide through groove 1b, the effect that the screws are separated from the guide through groove 1b is achieved through the fixing block 5, and after the height is adjusted, the screws are screwed to lock the fixing block 5 to form positioning.
The lifting clamping mechanism has the following action modes:
the rotating shaft 3a swings and shifts along the vertical groove 2c in the tooth moving area, so that the clamping tooth 3b of the tooth piece 3 is separated from the gear tooth groove of the rack groove 1a in the inclined state and swings to the vertical state, and the position of the lifting seat 2, namely the position of the lifting lumbar support 7, can be adjusted up and down. After the gear piece 3 is adjusted in place, the gear piece 3 is released, the gear piece 3 is restored to an inclined state under the action of the steering elastic force of the torsion spring 4, and the clamping teeth 3b are embedded into the gear tooth grooves of the corresponding positions to be clamped and positioned, namely the lumbar support 7 is locked at the positions.
Example two
This embodiment is substantially the same as the first embodiment except that:
as shown in fig. 8, the fixing bar 8 is used to replace the fixing block 5, only one mounting hole is opened on the fixing block 5, that is, one screw is connected in a penetrating manner, the fixing bar 8 is provided with two mounting holes up and down, two screws are connected in a penetrating manner, so that the guiding performance and stability of lifting and sliding are further improved, and the firmness of fixing is improved by double locking.
Example III
This embodiment is substantially the same as the first embodiment except that:
as shown in fig. 9, the back side of the lifting seat 2 is provided with a mounting groove 2a, and the mounting groove 2a is formed by communicating a spring positioning area and a tooth moving area; the spring is specifically a compression spring 9, one end of the compression spring 9 is abutted against the groove wall of the spring positioning area, and the other end is abutted against the side wall of the tooth piece 3; the tooth movable area is concavely provided with a vertical groove 2c, and the tooth piece 3 is embedded into the vertical groove 2c through a rotating shaft 3a to form a swing and lifting composite action.
The compression spring 9 and the tooth member 3 are assembled by the mounting groove 2a in a distinguishing way, so that the moving mode and the moving range of the compression spring and the tooth member 3 are limited. The tooth piece 3 rotates under the action of elastic tension through the mutual abutting action of the compression spring 9 and the tooth piece 3.
Example IV
Based on the first to third embodiments, the difference of this embodiment is:
as shown in fig. 10, a chair back includes a back frame 6 and a lumbar support 7, and includes the lifting and positioning mechanism described above.
In the chair back, an assembly groove is concavely formed in the inner side of the backrest frame 6, and the lifting guide plate 1 is fixedly arranged in the assembly groove through a screw; the outer side of the lifting seat 2 is convexly provided with a hinging seat 2e, and the waist rest 7 is rotatably arranged in the hinging seat 2e through a middle shaft.
Compared with the prior art, the chair back has the following beneficial effects:
1. through the tooth meshing joint structure of rack and tooth, adopt to turn to spring force and carry out elasticity pressure and hold, realize the switching of lift mode and locking mode through the reciprocal pendulum of tooth, accomplish the lift adjustment of independent waist back, extensively adapt to the human waist of different heights, physique and support, improve the comfort level of use.
2. The structure has the advantages of simple lifting and locking switching operation, strong adjustment flexibility, stable and firm clamping and positioning, meets the requirements of the contemporary society on the service performance of furniture, and has good market prospect.
Example five
Based on the fourth embodiment, the difference in this embodiment is:
a chair comprises the chair back.
Compared with the prior art, the chair has the following beneficial effects:
1. through the tooth meshing joint structure of rack and tooth, adopt to turn to spring force and carry out elasticity pressure and hold, realize the switching of lift mode and locking mode through the reciprocal pendulum of tooth, accomplish the lift adjustment of independent waist back, extensively adapt to the human waist of different heights, physique and support, improve the comfort level of use.
2. The structure has the advantages of simple lifting and locking switching operation, strong adjustment flexibility, stable and firm clamping and positioning, meets the requirements of the contemporary society on the service performance of furniture, and has good market prospect.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.
Although the lifting guide 1 is used more herein; a rack groove 1a; a guide through groove 1b; a guide rail 1c; a lifting seat 2; a mounting groove 2a; a positioning column 2b; a vertical groove 2c; a slide bar 2d; a hinge base 2e; tooth members 3; a rotating shaft 3a; a clamping tooth 3b; a limit hook 3c; a limiting angle 3d; a torsion spring 4; a fixed block 5; a backrest frame 6; a lumbar support 7; a fixing strip 8; compression spring 9, etc., but the possibility of using other terms is not excluded. These terms are used merely for convenience in describing and explaining the nature of the utility model; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present utility model.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Claims (10)
1. The utility model provides a lift screens mechanism, includes lift baffle and lifting seat, its characterized in that, set up multi-gear screens structure and guide structure on the lift baffle, elastic screens subassembly and guide smooth subassembly are installed to the lifting seat, elastic screens subassembly with multi-gear screens structure forms the locking and is connected or swing joint, guide smooth subassembly is followed guide structure forms the lift and slides and connect, the lifting seat with it is fixed through locking structure between the lift baffle.
2. The lifting clamping mechanism according to claim 1, wherein the multi-gear clamping structure is a rack groove vertically arranged on the lifting guide plate, the rack groove is provided with a rectangular groove body, and a plurality of gear tooth grooves are arranged on one long side of the rectangular groove body in a concave manner; the elastic clamping component comprises a tooth piece and a spring, wherein clamping teeth are convexly arranged on the tooth piece, the clamping teeth are embedded into any gear tooth groove to be clamped and positioned, and the spring is abutted between the lifting seat and the tooth piece through elastic pressing force.
3. The lifting clamping mechanism according to claim 2, wherein a mounting groove is formed in the back side of the lifting seat, and the mounting groove is formed by communicating a spring positioning area with a tooth moving area; the spring is specifically a torsion spring, the spring positioning area is provided with a positioning column, the torsion spring is sleeved on the positioning column to form rotary connection, one torsion arm of the torsion spring is abutted against the groove wall of the spring positioning area, and the other torsion arm is abutted against the side wall of the tooth piece; the tooth moving area is concavely provided with a vertical groove, and the tooth piece is embedded into the vertical groove through a rotating shaft to form a swing and lifting combined action.
4. The lifting clamping mechanism according to claim 3, wherein the tooth piece is provided with a limit hook and a limit angle, a gear groove and a gear angle groove are correspondingly concavely arranged on the groove wall of the tooth moving area, the limit hook is positioned in the gear groove to form hooking fixation, the limit angle is positioned in the gear angle groove to form blocking fixation, the limit hook is provided with a convex arc hook head, an arc protrusion is correspondingly convexly arranged at the inlet of the gear groove, and the arc hook head and the arc protrusion are mutually hooked to form clamping positioning.
5. The lifting clamping mechanism according to claim 2, wherein the guiding structure comprises two parallel guide rails concavely arranged on the lifting guide plate, the two guide rails are respectively positioned on two sides of the rack groove, the sliding guide assembly comprises two parallel sliding strips convexly arranged on the lifting seat, and the two sliding strips are embedded into the two guide rails in a one-to-one correspondence manner to form sliding connection.
6. The lifting clamping mechanism according to claim 2, wherein the locking structure comprises two parallel guide through grooves formed in the lifting guide plate, the two guide through grooves are respectively located on two sides of the rack groove, the lifting seat is connected with two fixing blocks through screws, and the two screws are correspondingly connected with the two guide through grooves in a penetrating mode in a one-to-one mode to be connected in a sliding mode or locked and fixed.
7. The lifting clamping mechanism according to claim 2, wherein a mounting groove is formed in the back side of the lifting seat, and the mounting groove is formed by communicating a spring positioning area with a tooth moving area; the spring is specifically a compression spring, one end of the compression spring is abutted against the groove wall of the spring positioning area, and the other end of the compression spring is abutted against the side wall of the tooth piece; the tooth moving area is concavely provided with a vertical groove, and the tooth piece is embedded into the vertical groove through a rotating shaft to form a swing and lifting combined action.
8. A chair back comprising a back frame and a lumbar support, and comprising a lifting and positioning mechanism as claimed in any one of claims 1 to 7.
9. The chair back of claim 8, wherein the inner side of the backrest frame is concavely provided with an assembling groove, and the lifting guide plate is fixedly arranged in the assembling groove through a screw; the outer side of the lifting seat is convexly provided with a hinge seat, and the waist rest is rotatably arranged in the hinge seat through a middle shaft.
10. A chair comprising a chair back as claimed in claim 8 or 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320387420.4U CN219680148U (en) | 2023-02-28 | 2023-02-28 | Lifting clamping mechanism, chair back and chair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320387420.4U CN219680148U (en) | 2023-02-28 | 2023-02-28 | Lifting clamping mechanism, chair back and chair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219680148U true CN219680148U (en) | 2023-09-15 |
Family
ID=87938887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320387420.4U Active CN219680148U (en) | 2023-02-28 | 2023-02-28 | Lifting clamping mechanism, chair back and chair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219680148U (en) |
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2023
- 2023-02-28 CN CN202320387420.4U patent/CN219680148U/en active Active
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