CN212756182U

CN212756182U - Multi-posture seat

Info

Publication number: CN212756182U
Application number: CN202020499470.8U
Authority: CN
Inventors: 康正; 祁志贤; 宋圆; 夏红燕; 李�一
Original assignee: Shandong Kangtai Industry Co Ltd
Current assignee: Shandong Kangtai Industry Co Ltd
Priority date: 2020-04-08
Filing date: 2020-04-08
Publication date: 2021-03-23
Anticipated expiration: 2030-04-08

Abstract

The utility model relates to a multi-posture seat contains: the backrest chair comprises a base frame, a seat frame arranged on the base frame, a backrest frame pivoted to the seat frame, a leg foot frame pivoted to the seat frame and a handrail pivoted to the seat frame; the multi-posture seat is in a sitting posture state by upwards overturning the backrest frame and downwards overturning the leg and foot frame, and is in a lying posture state by downwards overturning the backrest frame and upwards overturning the leg and foot frame; the armrest can rotate relative to the seat frame to a sitting posture holding position convenient for a user to hold in a sitting posture state and a lying posture holding position convenient for the user to hold in a lying posture state; the backrest frame is characterized in that a transmission mechanism is installed between the backrest frame and the armrests, and when the backrest frame is switched between an upward turning state and a downward turning state, the transmission mechanism drives the armrests to correspondingly switch between a sitting posture holding position and a prone posture holding position. Compared with the prior art, the armrest can be driven by the movement of the backrest frame, and the rotation of the armrest does not need to be actively controlled by a user, so that the armrest is more convenient to use.

Description

Multi-posture seat

Technical Field

The utility model relates to a seat technique specifically relates to a multi-posture seat.

Background

Multi-position seats are a common type of chair and are typically switchable between a prone position and a sitting position. Taking patent application CN201821241426.6 as an example, the seat of the present solution includes a backrest frame, a seat frame and a leg frame which are pivotally connected in sequence, and the three are switched among a lying state, a sitting state and a standing state by relative rotation. According to the technical scheme of the patent application CN201821241426.6, when the seat is switched between the sitting posture state and the lying posture state, the state of the armrest relative to the seat frame is not changed in a driven manner, and the armrest is required to be actively controlled by a user to rotate relative to the seat frame, so that the user can be ensured to hold the armrest in a proper posture when the seat is switched between different states, namely, the problem that the seat is inconvenient to use still exists in the scheme. In view of this, the present application is specifically made.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a use of multi-posture seat in order to solve prior art existence is not convenient problem is provided.

In order to solve the technical problem, the utility model provides a multi-posture seat contains: the backrest chair comprises a base frame, a seat frame arranged on the base frame, a backrest frame pivoted to the seat frame, a leg foot frame pivoted to the seat frame and a handrail pivoted to the seat frame; the multi-posture seat is in a sitting posture state by upwards overturning the backrest frame and downwards overturning the leg and foot frame, and is in a lying posture state by downwards overturning the backrest frame and upwards overturning the leg and foot frame; the armrest can rotate relative to the seat frame to a sitting posture holding position convenient for a user to hold in a sitting posture state and a lying posture holding position convenient for the user to hold in a lying posture state; the backrest frame is characterized in that a transmission mechanism is installed between the backrest frame and the armrests, and when the backrest frame is switched between an upward turning state and a downward turning state, the transmission mechanism drives the armrests to correspondingly switch between a sitting posture holding position and a prone posture holding position.

Preferably, the seat frame is pivoted to the base frame, and the multi-posture seat is switched between the standing posture state and the sitting posture state by switching between a forward overturning state and a backward overturning state relative to the base frame.

Preferably, the transmission mechanism comprises: a first drive rod and a second drive rod; the first end of the first transmission rod is hinged to the backrest frame, the second end of the first transmission rod is hinged to the first end of the second transmission rod, and the second end of the second transmission rod is connected to the armrest.

Preferably, the seat frame driving mechanism for driving the seat frame to overturn relative to the underframe is a telescopic push rod which is arranged between the seat frame and the underframe.

Preferably, the backrest frame driving mechanism for driving the backrest frame to turn relative to the seat frame is a telescopic push rod, and is installed between the backrest frame and the seat frame.

Preferably, the leg and foot rest driving mechanism for driving the leg and foot rest to turn relative to the seat frame is a telescopic push rod installed between the leg and foot rest and the seat frame.

Preferably, the leg rest includes: the seat comprises a fixed frame part pivoted on a seat frame, a movable frame part which can stretch and move relative to the fixed frame part, and a stretching driving component; the telescopic driving assembly is arranged between the fixed frame part and the movable frame part to drive the movable frame part to move relative to the fixed frame part in a telescopic mode.

Preferably, the movable frame part comprises a movable seat and a bearing plate; the movable seat is in sliding fit with the fixed frame part, one side of the bearing plate is hinged to the movable seat through a hinge mechanism, and a buffer spring and an inductive switch are arranged between the other side of the bearing plate and the movable seat; the bearing plate compresses the buffer spring and triggers the inductive switch when being hinged under the action of pressure.

Preferably, the armrest is provided with a control switch for controlling the multi-posture seat to switch between different postures.

By adopting the technical scheme, the utility model discloses can gain following technological effect: according to the multi-posture seat, the transmission mechanism drives the armrests to correspondingly move between the seat holding position and the prone holding position when the backrest frame is turned over, and compared with the prior art, the armrests can be driven by the movement of the backrest frame without actively controlling the rotation of the backrest frame by a user, so that the multi-posture seat is more convenient to use.

Drawings

Fig. 1 and 2 are schematic views respectively illustrating a multi-posture seat of a next embodiment at different viewing angles in a lying posture state;

FIGS. 3 and 4 are first exploded views of a multi-position seat of the embodiment from different perspectives in a prone position;

FIG. 5 is a schematic view of an embodiment of a multi-position seat being converted from a sitting position to a prone position;

FIG. 6 is a schematic diagram illustrating an embodiment of a multi-position seat being converted from a prone position to a standing position;

FIG. 7 is an exploded view of the leg rest;

FIG. 8 depicts an exploded view of the movable frame portion;

fig. 9 shows a schematic view of a movable frame part.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.

With reference to fig. 1 to 6, in an embodiment, the multi-position seat of the present application includes: the chair comprises an underframe 1, a seat frame 2, a backrest frame 3, a leg frame 4, a seat frame driving mechanism 5, a backrest frame driving mechanism 6, a leg frame driving mechanism 7, an armrest 8 and a transmission mechanism 9.

A ground contact guide wheel is installed on the front side of the chassis 1. The seat frame 2 is installed on the base frame 1, and in the embodiment, the seat frame 2 is pivoted on the base frame 1. The backrest frame 3 is pivoted to the seat frame 2, and the leg rest 4 is pivoted to the seat frame 2. The seat frame driving mechanism 5, the backrest frame driving mechanism 6 and the leg and foot frame driving mechanism 7 are all telescopic push rods. The seat frame driving mechanism 5 is installed between the seat frame 2 and the underframe 1, and is two on the left and right sides, and is used for driving the seat frame 2 to overturn relative to the underframe 1. The backrest frame driving mechanism 6 is installed between the backrest frame 3 and the seat frame 2, and is one for driving the backrest frame 3 to turn with respect to the seat frame 2. The leg rest driving mechanism 7 is installed between the leg rest 4 and the seat frame 2, and is one for driving the leg rest 4 to turn over relative to the seat frame 2. The two armrests 8 are respectively pivoted on two sides of the seat frame 2, and the armrests 8 can be provided with control switches for controlling the multi-posture seat to be switched between different states. The transmission mechanism 9 is installed between the backrest frame 3 and the armrests 8, and is divided into two groups, which correspond to the two armrests 8, and the transmission mechanism 9 includes: a first transmission lever 9A and a second transmission lever 9B. The first end of the first transmission rod 9A is hinged on the backrest frame 3, the second end of the first transmission rod 9A is hinged on the first end of the second transmission rod 9B, and the second end of the second transmission rod 9B is connected on the handrail 8.

Referring to fig. 5 and 6, a user can control a control switch (not shown) on the armrest 8 to switch the multi-position seat between the sitting position, the prone position, and the standing position. Referring to fig. 5, the armrest 8 is rotatable relative to the seat frame 2 to a seating position for facilitating a user's grip in a seating position (where the grip portion of the armrest extends forward and rearward) and a prone position for facilitating a user's grip in a prone position (where the grip portion of the armrest extends upward and downward). Specifically, referring to fig. 5, the multi-posture seat is in a sitting posture by the backrest frame 3 being turned upward and the leg rest 4 being turned downward, and is in a lying posture by the backrest frame 3 being turned downward and the leg rest 4 being turned upward. When the backrest frame 3 is switched between the upward turning state and the downward turning state, the transmission mechanism 9 drives the handrail 8 to be correspondingly switched between the sitting posture holding position and the lying posture holding position. Referring to fig. 6, the seat frame 2 is switched between the forward tilting state and the backward tilting state with respect to the base frame 1, so that the multi-posture seat is correspondingly switched between the standing posture state and the sitting posture state. In the process of switching different states of the multi-posture seat, the change situation of each telescopic push rod can be understood by referring to patent application CN201821241426.6, and is not described in detail.

Referring to fig. 7 to 9, the leg unit 4 includes: a fixed frame part 10, a movable frame part 11 and a telescopic driving component 12. The fixed frame part 10 is pivoted on the seat frame 2, the movable frame part 11 can move relative to the fixed frame part 10 in a telescopic mode, a guide rod 13 is installed on the fixed frame part 10, a linear bearing 14 is installed on the movable frame part 11, and the linear bearing 14 is sleeved on the guide rod 13 to limit the moving direction of the movable frame part 11. The telescopic driving assembly 12 is installed between the fixed frame part 10 and the movable frame part 11 to drive the movable frame part 11 to move telescopically relative to the fixed frame part 10. The telescopic drive assembly 12 comprises a wire rod member 12A and a nut member 12B, the wire rod member 12A being mounted on the fixed frame portion 10, and the nut member 12B being mounted on the movable frame portion 11. The telescoping drive assembly 12 may also be adjusted as a telescoping ram. The movable frame part 11 includes: the movable seat 11A, the supporting plate 11B, the hinge mechanism 11C, the buffer spring 11D and the inductive switch 11E. The movable seat 11A is in sliding fit with the fixed frame part 10, one side of the supporting plate 11B is hinged to the movable seat 11A through a hinge mechanism 11C, and a buffer spring 11D and an inductive switch 11E are arranged between the other side of the supporting plate 11B and the movable seat 11A. When the bearing plate 11B is hinged by the pressing force, the buffer spring 11D is compressed and the inductive switch 11E is triggered. The linear bearing 14 is mounted on the movable mount 11A. The inductive switch 11E is electrically connected to a control mechanism (not shown) of the multi-posture seat, when the control mechanism of the telescopic driving assembly 12 controls the telescopic driving assembly 12 to move and the movable frame part 11 is retracted, the supporting plate 11 is pressed by the user's foot, the supporting plate 11 is hinged to move and the inductive switch 11E is triggered, the control mechanism of the telescopic driving assembly 12 controls the working state of the telescopic driving assembly 12 according to the electric signal of the inductive switch 11E, so that the movable frame part 11 stops being retracted. The inductive switch 11E may be a micro switch, but may be adjusted to be a hall sensor or other switches capable of detecting displacement change according to the product requirement.

The above is an embodiment of the present application, and other modifications can be made to the present application. In another embodiment, the leg rest 4 may be of a non-telescoping construction. In another embodiment, a control switch is not arranged on the armrest, and a switch of a voice control type or the like is adopted to control the seat to switch different working postures.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-position seat, comprising: the chair comprises an underframe (1), a seat frame (2) arranged on the underframe (1), a backrest frame (3) pivoted to the seat frame (2), a leg and foot frame (4) pivoted to the seat frame (2), and an armrest (8) pivoted to the seat frame (2); the multi-posture seat is in a sitting posture state by upwards overturning the backrest frame (3) and downwards overturning the leg foot frame (4), and is in a lying posture state by downwards overturning the backrest frame (3) and upwards overturning the leg foot frame (4); the chair is characterized in that the armrest (8) can rotate relative to the seat frame (2) to a sitting position holding position convenient for a user to hold in a sitting state and a prone position holding position convenient for the user to hold in a prone state; the backrest frame (3) and the handrail (8) are provided with a transmission mechanism (9) therebetween, and the backrest frame (3) is driven by the transmission mechanism (9) to switch between a seat holding position and a prone holding position when switching between an upward turning state and a downward turning state.

2. The multi-posture seat according to claim 1, wherein the seat frame (2) is pivotally connected to the base frame (1) and the multi-posture seat is correspondingly switched between the standing posture and the sitting posture by switching between a forwardly turned and a rearwardly turned state with respect to the base frame (1).

3. The multi-posture seat according to claim 1, characterized in that said transmission mechanism (9) comprises: a first transmission rod (9A) and a second transmission rod (9B); the first end of the first transmission rod (9A) is hinged to the backrest frame (3), the second end of the first transmission rod (9A) is hinged to the first end of the second transmission rod (9B), and the second end of the second transmission rod (9B) is connected to the armrest (8).

4. The multi-posture seat as claimed in claim 2, wherein the seat frame driving mechanism (5) for driving the seat frame (2) to be turned with respect to the base frame (1) is a telescopic push rod installed between the seat frame (2) and the base frame (1).

5. The multi-posture seat according to any one of claims 1 to 4, wherein the back frame driving mechanism (6) for driving the back frame (3) to turn with respect to the seat frame (2) is a telescopic push rod installed between the back frame (3) and the seat frame (2).

6. The multi-posture seat according to any one of claims 1 to 4, wherein a leg rest driving mechanism (7) for driving the leg rest (4) to turn with respect to the seat frame (2) is a telescopic push rod installed between the leg rest (4) and the seat frame (2).

7. The multi-posture seat according to claim 1, characterized in that said leg rest (4) comprises: a fixed frame part (10) pivoted on the seat frame (2), a movable frame part (11) capable of stretching and retracting relative to the fixed frame part (10), and a stretching driving component (12); the telescopic driving component (12) is arranged between the fixed frame part (10) and the movable frame part (11) to drive the movable frame part (11) to move relative to the fixed frame part (10) in a telescopic mode.

8. The multi-posture seat of claim 7, wherein the movable frame part (11) comprises a movable seat (11A) and a support plate (11B); the movable seat (11A) is in sliding fit with the fixed frame part (10), one side of the bearing plate (11B) is hinged to the movable seat (11A) through a hinge mechanism (11C), and a buffer spring (11D) and an inductive switch (11E) are arranged between the other side of the bearing plate (11B) and the movable seat (11A); the bearing plate (11B) compresses the buffer spring (11D) and triggers the inductive switch (11E) when the bearing plate is pressed and hinged.

9. The multi-posture seat according to claim 1, characterized in that the armrest (8) is provided with a manipulation switch for controlling the multi-posture seat to switch between different postures.