CN220756981U

CN220756981U - Automatic telescopic chair frame

Info

Publication number: CN220756981U
Application number: CN202322519068.8U
Authority: CN
Inventors: 马坚辉; 丁先平
Original assignee: Guangdong Jieke Smart Home Co ltd
Current assignee: Guangdong Jieke Smart Home Co ltd
Priority date: 2023-09-15
Filing date: 2023-09-15
Publication date: 2024-04-12
Anticipated expiration: 2033-09-15

Abstract

The utility model relates to an automatic telescopic chair frame which comprises a fixed seat, a driving mechanism, a first movable seat, a second movable seat, a leg supporting component, a backrest component, a first linkage component, a second linkage component and a limiting piece, wherein the leg supporting component is respectively hinged with one end of the driving mechanism and one end of the first movable seat; the backrest assembly is hinged with the other end of the first movable seat and the fixed seat respectively; the first linkage assembly is hinged with the first movable seat and the second movable seat respectively; the second linkage assembly is hinged with the second movable seat and the fixed seat respectively; the limiting piece can be abutted against the first linkage assembly. The limiting piece is in conflict with the first linkage assembly, so that the first linkage assembly, the first movable seat and the second movable seat are locked, and smooth conversion of the posture of the chair frame is facilitated. The second linkage assembly further drives the first movable seat to move in a direction away from the backrest assembly, so that the movement stroke of the first movable seat is increased, and the backrest assembly can be unfolded sequentially.

Description

Automatic telescopic chair frame

Technical Field

The utility model relates to the technical field of seat manufacturing, in particular to an automatic telescopic seat frame.

Background

Along with the improvement of the living standard of people, people pay more and more attention to comfort and physical health in daily life. The chair is used as a very common furniture, and is a necessary furniture for decorating rooms and a necessary furniture for leisure and reception. The patent with the patent application number of CN202210485841.0 and the patent application name of a seat frame with an improved structure discloses a seat frame, which comprises a base, an armrest frame, a driving mechanism rotationally arranged on the base, an armrest frame adjusting assembly slidingly arranged on the base, a leg supporting assembly rotationally connected with the output end of the driving mechanism, a backrest assembly respectively hinged with the armrest frame and the base, a first linkage rod arranged on one side of the armrest frame adjusting assembly, a second linkage rod arranged on the other side of the armrest frame adjusting assembly, and a third linkage rod with one end hinged with the middle of the second linkage rod, wherein the leg supporting assembly is respectively hinged with the other end of the third linkage rod and the armrest frame.

The structure in this patent application is complex, the installation and connection are inconvenient, and the production cost is high. The comfort of the user when using the chair is poor and the body cannot be fully relaxed. Thus, the drawbacks are quite apparent and there is a need to provide a solution.

Disclosure of Invention

In order to solve the technical problems, the utility model aims to provide an automatic telescopic chair frame.

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

the automatic telescopic chair frame comprises a fixed seat, a driving mechanism, a first movable seat, a second movable seat, a leg support assembly, a backrest assembly, a first linkage assembly, a second linkage assembly and a limiting piece arranged on the first movable seat, wherein the leg support assembly is respectively hinged with the output end of the driving mechanism and one end of the first movable seat; the backrest assembly is hinged with the other end of the first movable seat and the fixed seat respectively; the body of the driving mechanism is hinged with one end of the fixed seat, which is far away from the leg support assembly; the first linkage assembly is hinged with the first movable seat and the second movable seat respectively; the second linkage assembly is hinged with the second movable seat and the fixed seat respectively; the limiting piece can be abutted against the first linkage assembly.

Further, the first linkage assembly comprises a first linkage rod, a second linkage rod and a third linkage rod, one end of the first linkage rod is hinged with one end of the second movable seat, the other end of the first linkage rod is hinged with one end of the first movable seat, one end of the second linkage rod is hinged with the other end of the second movable seat, and the other end of the second linkage rod is hinged with the other end of the first movable seat; one end of the third linkage rod is hinged with the middle part of the second linkage rod, and the other end of the third linkage rod is hinged with one end, close to the leg support assembly, of the first movable seat; the first linkage rod can be abutted against the limiting piece.

Further, the second linkage assembly comprises a first rotating rod, a second rotating rod, a third rotating rod, a fourth rotating rod and a fifth rotating rod, one end of the first rotating rod is hinged to one end of the second rotating rod, the other end of the first rotating rod is hinged to one end of the third rotating rod, the other end of the second rotating rod is hinged to one end of the fixing base, the other end of the third rotating rod is hinged to the other end of the fixing base, the middle of the second rotating rod is hinged to one end of the fourth rotating rod, the other end of the fourth rotating rod is hinged to one end of the second moving base, the middle of the third rotating rod is hinged to one end of the fifth rotating rod, and the other end of the fifth rotating rod is hinged to the other end of the second moving base.

Further, the second linkage assembly further comprises a sixth rotating rod, one end of the sixth rotating rod is hinged to the middle of the fourth rotating rod, and the other end of the sixth rotating rod is hinged to the middle of the first rotating rod.

Further, the back assembly comprises a first back rod, a second back rod, a third back rod, a fourth back rod, a fifth back rod and a sixth back rod, one end of the first back rod is hinged with one end of the second back rod, the other end of the second back rod is hinged with one end of the third back rod, the middle part of the third back rod is connected with the first movable seat, the other end of the third back rod is hinged with the middle part of the fourth back rod, one end of the fourth back rod is hinged with one end of the fifth back rod, the other end of the fifth back rod is hinged with one end of the fixed seat, the other end of the fourth back rod is hinged with one end of the sixth back rod, and the other end of the sixth back rod is hinged with the other end of the first back rod.

Further, the backrest assembly further comprises a seventh backrest rod, one end of the seventh backrest rod is hinged to one end, close to the sixth backrest rod, of the fourth backrest rod, and the other end of the seventh backrest rod is hinged to the middle of the second backrest rod.

Further, the automatic telescopic chair frame further comprises a driving rod arranged on the leg supporting assembly, and the middle part of the driving rod is hinged with the output end of the driving mechanism.

The utility model has the beneficial effects that: according to the utility model, the limiting piece is abutted against the first linkage assembly, so that the rotation travel of the first linkage assembly relative to the first movable seat and the second movable seat is limited, smooth and smooth conversion of the posture of the chair frame is facilitated, and the stability in the process of converting the posture of the chair frame is improved. The second linkage assembly further drives the first movable seat to move in a direction away from the backrest assembly, so that the movement stroke of the first movable seat is increased, the backrest assembly can be unfolded in sequence, and the comfort level during leaning is improved.

Drawings

Fig. 1 is a schematic perspective view of the present utility model in a sitting posture.

Fig. 2 is a schematic view of a partial perspective view of the present utility model in a semi-reclined state.

Fig. 3 is a partial exploded view of the present utility model in a semi-reclined position.

Fig. 4 is a schematic perspective view of the present utility model in a lying state.

Reference numerals illustrate:

1. a fixing seat; 2. a driving mechanism; 3. a first movable seat; 4. a second movable seat; 5. a first linkage assembly; 6. a second linkage assembly; 7. a backrest assembly; 8. a leg support assembly; 9. a limiting piece; 10. a driving rod; 51. a first linkage rod; 52. a second linkage rod; 53. a third linkage rod; 61. a first rotating lever; 62. a second rotating lever; 63. a third rotating lever; 64. a fourth rotating lever; 65. a fifth rotating lever; 66. a sixth rotating lever; 71. a first backrest bar; 72. a second backrest bar; 73. a third backrest bar; 74. a fourth backrest bar; 75. a fifth backrest bar; 76. a sixth backrest bar; 77. and a seventh backrest rod.

Detailed Description

The utility model will be further described with reference to examples and drawings, to which reference is made, but which are not intended to limit the scope of the utility model.

As shown in fig. 1 to 4, the utility model provides an automatic telescopic chair frame, which comprises a fixed seat 1, a driving mechanism 2, a first movable seat 3, a second movable seat 4, a leg support component 8, a backrest component 7, a first linkage component 5, a second linkage component 6 and a limiting piece 9 arranged on the first movable seat 3, wherein the leg support component 8 is respectively hinged with the output end of the driving mechanism 2 and one end of the first movable seat 3; the backrest component 7 is hinged with the other end of the first movable seat 3 and the fixed seat 1 respectively; the body of the driving mechanism 2 is hinged with one end of the fixed seat 1 far away from the leg support assembly 8; the first linkage assembly 5 is hinged with the first movable seat 3 and the second movable seat 4 respectively; the second linkage assembly 6 is hinged with the second movable seat 4 and the fixed seat 1 respectively; the limiting piece 9 can be abutted against the first linkage assembly 5.

Specifically, the driving mechanism 2 may employ an electric push rod or an air cylinder. The first movable seat 3, the second movable seat 4, the leg support assembly 8, the backrest assembly 7, the first linkage assembly 5, the second linkage assembly 6 and the limiting piece 9 form a linkage body, and the number of the linkage bodies is two; the two linkage bodies are respectively arranged at two sides of the driving mechanism 2, and two ends of the fixed seat 1 are respectively hinged with a backrest component 7 and a second linkage component 6 of the two linkage bodies. In the actual use process, when the chair frame is in a sitting posture state, the backrest component 7 and the leg supporting component 8 are in a folding state, and the output end of the driving mechanism 2 extends out of the body of the driving mechanism 2 to the shortest length. When the chair frame needs to be adjusted to a semi-lying state, the driving mechanism 2 is started, the length of the body of the driving mechanism 2, which extends out of the driving mechanism 2, is continuously increased, the driving mechanism 2 drives the leg support assembly 8 to rotate relative to the first movable seat 3 until the leg support assembly 8 is fully unfolded, then the driving mechanism 2 continues to stretch, meanwhile, the driving mechanism 2 can drive the first movable seat 3 to move away from the backrest assembly 7 through the leg support assembly 8, the moving first movable seat 3 can drive the first linkage assembly 5 to rotate relative to the first movable seat 3 and the second movable seat 4 until the limiting piece 9 is abutted against the first linkage assembly 5, at the moment, one end of the first movable seat 3, which is close to the leg support assembly 8, slightly rotates to incline upwards, and the backrest assembly 7 can rotate relative to the fixed seat 1 under the driving of the first movable seat 3, so that the backrest assembly 7 can be initially unfolded or inclined relative to the fixed seat 1, and the chair frame is adjusted to the semi-lying state. When the chair frame needs to be continuously adjusted to a lying state, the driving mechanism 2 continues to stretch, as the limiting piece 9 is in contact with the first linkage assembly 5, the first linkage assembly 5 is in a locking state relative to the first movable seat 3 and the second movable seat 4, the driving mechanism 2 drives the second movable seat 4 to move in a direction away from the backrest assembly 7 through the leg supporting assembly 8, the first movable seat 3 and the first linkage assembly 5, the moving second movable seat 4 can drive the second linkage assembly 6 to rotate relative to the second movable seat 4 and the fixed seat 1 so that the first movable seat 3 moves further in a direction away from the backrest assembly 7, the moving first movable seat 3 drives the backrest assembly 7 to further incline and unfold relative to the fixed seat 1 until the backrest assembly 7 is completely unfolded, the driving mechanism 2 stops, the chair frame is converted into a lying state, and at the moment, the output end of the driving mechanism 2 extends out of the body of the driving mechanism 2 to the longest length. According to the utility model, the limiting piece 9 is abutted against the first linkage assembly 5, so that the first linkage assembly 5, the first movable seat 3 and the second movable seat 4 are locked, smooth and smooth conversion of the chair frame posture is facilitated, and the stability in the chair frame posture conversion process is improved. The second linkage assembly 6 further drives the first movable seat 3 to move in a direction away from the backrest assembly 7, so that the movement stroke of the first movable seat 3 is increased, the backrest assembly 7 can be unfolded in sequence, and the comfort level during leaning is improved.

Specifically, the first linkage assembly 5, the second movable seat 4, the second linkage assembly 6 and the fixed seat 1 are arranged at the side of the driving mechanism 2 from the near to the far, and the chair frame has compact structure, ordered arrangement and convenient installation.

Further, the first linkage assembly 5 includes a first linkage rod 51, a second linkage rod 52 and a third linkage rod 53, wherein one end of the first linkage rod 51 is hinged to one end of the second movable seat 4, the other end of the first linkage rod 51 is hinged to one end of the first movable seat 3, one end of the second linkage rod 52 is hinged to the other end of the second movable seat 4, and the other end of the second linkage rod 52 is hinged to the other end of the first movable seat 3; one end of the third linkage rod 53 is hinged with the middle part of the second linkage rod 52, and the other end of the third linkage rod 53 is hinged with one end of the first movable seat 3, which is close to the leg support assembly 8; the first linkage rod 51 can be abutted against the limiting piece 9. Preferably, the number of the limiting members 9 is two, and the two limiting members 9 can respectively collide with the first linkage rod 51 and the second linkage rod 52.

Specifically, the first linkage rod 51 and the second linkage rod 52 are located on the side of the first movable base 3 away from the driving mechanism 2, and the third linkage rod 53 is located on the side of the first movable base 3 close to the driving mechanism 2. In the actual use process, when the driving mechanism 2 drives the first movable seat 3 to move towards the direction close to the leg support assembly 8 through the leg support assembly 8, the first movable seat 3 drives the first linkage rod 51 and the second linkage rod 52 to rotate relative to the first movable seat 3 and the second movable seat 4 respectively, the third linkage rod 53 is driven by the first movable seat 3, the third linkage rod 53 also drives the second linkage rod 52 to rotate, the rotation direction of the third linkage rod 53 drives the second linkage rod 52 to be the same as the rotation direction of the first movable seat 3 drives the second linkage rod 52, the third linkage rod 53 has a guiding function, the second linkage rod 52 can be guided to rotate towards the direction close to the leg support assembly 8, and the movement of the first movable seat 3 relative to the second movable seat 4 is smoother until the two limiting pieces 9 are respectively in conflict with the first linkage rod 51 and the second linkage rod 52, the first linkage rod 51 can not rotate relative to the first movable seat 3 any more, and therefore locking of the first linkage assembly 5 and the first movable seat 3 is achieved, when the lying frame drives the second linkage rod 52 to move towards the second movable seat 4 continuously, and the second linkage rod 5 continuously moves towards the second movable seat 4 through the first linkage rod 51, and the second linkage rod 5 continuously moves towards the second linkage rod 5. The first linkage assembly 5 is simple and compact in structure, and the first linkage assembly 5 is convenient to connect with the first movable seat 3 and the second movable seat 4.

Further, the second linkage assembly 6 includes a first rotating rod 61, a second rotating rod 62, a third rotating rod 63, a fourth rotating rod 64 and a fifth rotating rod 65, one end of the first rotating rod 61 is hinged to one end of the second rotating rod 62, the other end of the first rotating rod 61 is hinged to one end of the third rotating rod 63, the other end of the second rotating rod 62 is hinged to one end of the fixed seat 1, the other end of the third rotating rod 63 is hinged to the other end of the fixed seat 1, the middle portion of the second rotating rod 62 is hinged to one end of the fourth rotating rod 64, the other end of the fourth rotating rod 64 is hinged to one end of the second moving seat 4, the middle portion of the third rotating rod 63 is hinged to one end of the fifth rotating rod 65, and the other end of the fifth rotating rod 65 is hinged to the other end of the second moving seat 4.

Specifically, the second linkage assembly 6 further includes a sixth rotating rod 66, one end of the sixth rotating rod 66 is hinged to the middle of the fourth rotating rod 64, and the other end of the sixth rotating rod 66 is hinged to the middle of the first rotating rod 61. In the actual use process, when the chair frame is changed from the semi-reclining state to the reclining state, the driving mechanism 2 drives the second movable seat 4 to move towards the direction approaching the leg support assembly 8 through the leg support assembly 8, the first movable seat 3 and the first linkage assembly 5, the moving second movable seat 4 drives the fourth rotating rod 64 and the fifth rotating rod 65 to move towards the direction approaching the leg support assembly 8, and drives the fourth rotating rod 64 to rotate relative to the second rotating rod 62 and the fifth rotating rod 65 to rotate relative to the third rotating rod 63, and at the same time, the moving fourth rotating rod 64 can drive the second rotating rod 62 to rotate relative to the fixed seat 1 towards the direction approaching the leg support assembly 8, and the moving fifth rotating rod 65 can simultaneously drive the third rotating rod 63 to rotate relative to the fixed seat 1 towards the direction approaching the leg support assembly 8, so that the second movable seat 4 moves towards the leg support assembly 8. The third rotating rod 63 drives the moving direction of the first rotating rod 61 to be the same as the rotating direction of the second rotating rod 62 driving the first rotating rod 61, and the first rotating rod 61 and the sixth rotating rod 66 are arranged, so that the synchronism of the second rotating rod 62, the third rotating rod 63, the fourth rotating rod 64 and the fifth rotating rod 65 in rotation is better, and the stable and smooth rotation of the second moving seat 4 is realized. The second linkage assembly 6 has compact structure, is convenient to connect with the fixed seat 1 and the second movable seat 4, effectively increases the movement stroke of the first movable seat 3 and the second movable seat 4, and improves the practicability of the utility model.

Further, the backrest assembly 7 includes a first backrest 71, a second backrest 72, a third backrest 73, a fourth backrest 74, a fifth backrest 75 and a sixth backrest 76, wherein one end of the first backrest 71 is hinged to one end of the second backrest 72, the other end of the second backrest 72 is hinged to one end of the third backrest 73, the middle part of the third backrest 73 is connected to the first movable seat 3, the other end of the third backrest 73 is hinged to the middle part of the fourth backrest 74, one end of the fourth backrest 74 is hinged to one end of the fifth backrest 75, the other end of the fifth backrest 75 is hinged to one end of the fixed seat 1, the other end of the fourth backrest 74 is hinged to one end of the sixth backrest 76, and the other end of the sixth backrest 76 is hinged to the other end of the first backrest 71.

Specifically, the backrest assembly 7 further includes a seventh backrest rod 77, one end of the seventh backrest rod 77 is hinged to one end of the fourth backrest rod 74 near the sixth backrest rod 76, and the other end of the seventh backrest rod 77 is hinged to the middle of the second backrest rod 72. When the chair frame is converted from the semi-lying state to the lying state, the first moving seat 3 drives the third backrest rod 73 to move towards the direction approaching to the leg supporting assembly 8, the third backrest rod 73 drives the fifth backrest rod 75 to rotate downwards relative to the fixed seat 1 through the fourth backrest rod 74, the fifth backrest rod 75 rotates and synchronously drives the fourth backrest rod 74 to rotate downwards relative to the third backrest rod 73, the third backrest rod 73 can drive the second backrest rod 72 and the first backrest rod 71 to move towards the direction approaching to the leg supporting assembly 8, and the rotating fourth backrest rod 74 can drive one end of the first backrest rod 71 to rotate downwards through the sixth backrest rod 76 and drive the other end of the first backrest rod 71 to rotate upwards through the seventh backrest rod 77 and the second backrest rod 72. Thereby effecting the unfolding or tilting of the back rest assembly 7 and the chair frame to be converted into a reclining position. The first backrest rod 71 is used for supporting the back of a user, and the first backrest rod 71 is driven to move through the first movable seat 3, so that the first backrest rod 71 is favorably and tightly attached to the back of the user after toppling over, the suspension between the first backrest rod 71 and the back of the user is avoided, the ergonomic design is better met, and the chair frame in a lying state is more comfortable.

Further, the automatic telescopic chair frame further comprises a driving rod 10 arranged on the leg supporting assembly 8, and the middle part of the driving rod 10 is hinged with the output end of the driving mechanism 2. The two ends of the driving rod 10 are respectively connected with the leg support assemblies 8 of the two linkage bodies, and the driving mechanism 2 drives the leg support assemblies 8 to be unfolded and folded conveniently through the driving rod 10. Specifically, the leg support assembly 8 has the same or similar structure and function as the existing leg folding assembly, and will not be described in detail herein.

All technical features in the embodiment can be freely combined according to actual needs.

The foregoing embodiments are preferred embodiments of the present utility model, and in addition, the present utility model may be implemented in other ways, and any obvious substitution is within the scope of the present utility model without departing from the concept of the present utility model.

Claims

1. An automatic telescopic chair frame which is characterized in that: the device comprises a fixed seat (1), a driving mechanism (2), a first movable seat (3), a second movable seat (4), a leg support assembly (8), a backrest assembly (7), a first linkage assembly (5), a second linkage assembly (6) and a limiting piece (9) arranged on the first movable seat (3), wherein the leg support assembly (8) is respectively hinged with the output end of the driving mechanism (2) and one end of the first movable seat (3); the backrest assembly (7) is hinged with the other end of the first movable seat (3) and the fixed seat (1) respectively; the body of the driving mechanism (2) is hinged with one end of the fixed seat (1) far away from the leg support assembly (8); the first linkage assembly (5) is hinged with the first movable seat (3) and the second movable seat (4) respectively; the second linkage assembly (6) is hinged with the second movable seat (4) and the fixed seat (1) respectively; the limiting piece (9) can be abutted against the first linkage assembly (5).

2. An automatically telescoping chair frame as in claim 1, wherein: the first linkage assembly (5) comprises a first linkage rod (51), a second linkage rod (52) and a third linkage rod (53), one end of the first linkage rod (51) is hinged with one end of the second movable seat (4), the other end of the first linkage rod (51) is hinged with one end of the first movable seat (3), one end of the second linkage rod (52) is hinged with the other end of the second movable seat (4), and the other end of the second linkage rod (52) is hinged with the other end of the first movable seat (3); one end of the third linkage rod (53) is hinged with the middle part of the second linkage rod (52), and the other end of the third linkage rod (53) is hinged with one end, close to the leg support assembly (8), of the first movable seat (3); the first linkage rod (51) can be abutted against the limiting piece (9).

3. An automatically telescoping chair frame as in claim 1, wherein: the second linkage assembly (6) comprises a first rotating rod (61), a second rotating rod (62), a third rotating rod (63), a fourth rotating rod (64) and a fifth rotating rod (65), one end of the first rotating rod (61) is hinged to one end of the second rotating rod (62), the other end of the first rotating rod (61) is hinged to one end of the third rotating rod (63), the other end of the second rotating rod (62) is hinged to one end of the fixed seat (1), the other end of the third rotating rod (63) is hinged to the other end of the fixed seat (1), the middle of the second rotating rod (62) is hinged to one end of the fourth rotating rod (64), the other end of the fourth rotating rod (64) is hinged to one end of the second movable seat (4), the middle of the third rotating rod (63) is hinged to one end of the fifth rotating rod (65), and the other end of the fifth rotating rod (65) is hinged to the other end of the second movable seat (4).

4. A self-retracting chair rack according to claim 3, wherein: the second linkage assembly (6) further comprises a sixth rotating rod (66), one end of the sixth rotating rod (66) is hinged to the middle of the fourth rotating rod (64), and the other end of the sixth rotating rod (66) is hinged to the middle of the first rotating rod (61).

5. An automatically telescoping chair frame as in claim 1, wherein: the backrest assembly (7) comprises a first backrest rod (71), a second backrest rod (72), a third backrest rod (73), a fourth backrest rod (74), a fifth backrest rod (75) and a sixth backrest rod (76), one end of the first backrest rod (71) is hinged with one end of the second backrest rod (72), the other end of the second backrest rod (72) is hinged with one end of the third backrest rod (73), the middle part of the third backrest rod (73) is connected with the first movable seat (3), the other end of the third backrest rod (73) is hinged with the middle part of the fourth backrest rod (74), one end of the fourth backrest rod (74) is hinged with one end of the fifth backrest rod (75), the other end of the fifth backrest rod (75) is hinged with one end of the fixed seat (1), the other end of the fourth backrest rod (74) is hinged with one end of the sixth backrest rod (76), and the other end of the sixth backrest rod (76) is hinged with the first backrest rod (71).

6. An automatically telescoping chair frame as in claim 5, wherein: the backrest assembly (7) further comprises a seventh backrest rod (77), one end of the seventh backrest rod (77) is hinged with one end, close to the sixth backrest rod (76), of the fourth backrest rod (74), and the other end of the seventh backrest rod (77) is hinged with the middle of the second backrest rod (72).

7. An automatically telescoping chair frame as in any one of claims 1-6 wherein: the automatic telescopic chair frame also comprises a driving rod (10) arranged on the leg supporting component (8), and the middle part of the driving rod (10) is hinged with the output end of the driving mechanism (2).