Zero-gravity seat with leg support adjusting mechanism

Abstract

The utility model discloses a zero-gravity seat with a leg support adjusting mechanism, which comprises a zero-gravity seat frame skeleton and a leg support part, and the leg support part comprises a leg support plate, a driving motor and a connecting rod assembly; the whole connecting rod assembly is a cross linkage mechanism; the upper end of the connecting rod a is hinged to the seat, the lower end of the connecting rod a is hinged to the lower end of the connecting rod c and driven by the driving motor, the middle of the connecting rod a is hinged to the middle of the connecting rod b, the upper end of the connecting rod b and the middle of the connecting rod c are hinged to the upper end and the middle of the connecting rod d respectively, and the upper end of the connecting rod c is hinged to the back face of the leg supporting plate. The lower end of the connecting rod d is hinged to a connecting rod e, the other end of the connecting rod e is hinged to the back face of the leg supporting plate, and the hinge point of the connecting rod e and the leg supporting plate is located below the hinge point of the connecting rod c and the leg supporting plate. The lower end of the connecting rod b is hinged with the connecting rod f. The connecting rod assembly of the leg support is arranged to be the cross linkage mechanism, so that the leg support plate can be kept stable in the stretching or retracting process and is not prone to shaking or inclining, and the structural stability strength is high.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile seats, in particular to a zero-gravity seat with a leg support adjustment mechanism. Background Art

[0002] In order to improve the riding comfort of car seats, zero-gravity seats provide passengers with a more ergonomic and healthier riding posture, which is mostly suitable for the front passenger or back seats. The zero-gravity seat posture can help relieve spinal pressure, relax back muscles, reduce heart pressure, and promote blood circulation. It can enhance the riding comfort of the car and better protect the health of the occupants. The leg support mechanism of existing low-position zero-gravity seats is mostly driven by a motor set on the seat frame to unfold, but the connecting rod assembly of most leg supports has poor stability and load-bearing capacity, and is easily damaged when passengers put their legs on the leg support for adjustment. Utility Model Content

[0003] In view of the defects of the above-mentioned prior art, the technical problem to be solved by the utility model is to provide a zero-gravity chair with a leg rest adjustment mechanism having stable movement and strong load-bearing capacity.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions: a zero-gravity chair with a leg rest adjustment mechanism, comprising a zero-gravity seat frame and a leg rest part, wherein the leg rest part comprises a leg rest plate, a drive motor and a connecting rod assembly; the connecting rod assembly comprises connecting rod a, connecting rod b, connecting rod c, connecting rod d and connecting rod e, and the connecting rod assembly as a whole is a cross-linked mechanism; the upper end of the connecting rod a is hinged to the seat, the lower end is hinged to the lower end of the connecting rod c, and is driven by the drive motor; The machine is driven, and the middle part of the connecting rod a is hinged to the middle part of the connecting rod b, the upper end of the connecting rod b and the middle part of the connecting rod c are hinged to the upper end and the middle part of the connecting rod d respectively, and the upper end of the connecting rod c is hinged to the back side of the leg support plate; the lower end of the connecting rod d is hinged to the connecting rod e, and the other end of the connecting rod e is hinged to the back side of the leg support plate, and the hinge point between the connecting rod e and the leg support plate is located below the hinge point between the connecting rod c and the leg support plate; the lower end of the connecting rod b is hinged to the connecting rod f, and the other end of the connecting rod f is hinged to the seat.

[0005] Preferably, two of the connecting rods a, b, c, d and e are provided and symmetrically arranged on the left and right sides of the leg support plate to ensure structural strength and balanced force.

[0006] Preferably, a connecting cross bar is fixedly provided at the upper end of the connecting rod a on the left and right sides, and the driving motor drives the connecting cross bar to rotate, thereby driving the connecting rod a to rotate.

[0007] Preferably, the zero-gravity seat frame skeleton includes a front cross tube, a rear cross tube and a pair of side panels, the two ends of the front cross tube and the rear cross tube are respectively hinged to the corresponding upper ends of the front lifting link and the rear lifting link, and the lower ends of the front lifting link and the rear lifting link are hinged to the seat slide rails on the corresponding sides.

[0008] Preferably, a first gear plate drive assembly is provided at the hinge of the front cross tube and the front lifting link, and a second gear plate drive assembly is provided at the hinge of the rear cross tube and the rear lifting link. The first gear plate drive assembly adjusts the inclination angle of the zero gravity seat frame, and the second gear plate drive assembly adjusts the height of the zero gravity seat frame.

[0009] Preferably, the drive motor is a lead screw motor.

[0010] The beneficial effects of the utility model: by setting the connecting rod assembly of the leg rest as a cross-linkage mechanism, the leg rest can remain stable during the extension or retraction process, and is not prone to shaking or tilting, and the structure is stable and has high strength, and is not easily damaged when passengers put their legs on the leg rest for adjustment. The cross-linkage mechanism can realize the folding and unfolding of the leg rest, and is driven by a motor to be fixed at any angle to meet the needs of different passengers, effectively alleviating the leg fatigue caused by passengers riding in a car for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the leg support part;

[0012] Figure 2 It is a schematic diagram of the folded state of the leg support;

[0013] Figure 3 is a schematic diagram of the unfolded state of the leg support;

[0014] Figure 4 It is a structural schematic diagram of the seat frame skeleton;

[0015] Figure 5 The figure is a schematic diagram of the inclination adjustment of the seat frame frame;

[0016] Figure 6 It is a schematic diagram of the height adjustment of the seat frame frame;

[0017] In the figure: A-zero gravity seat frame, 1-leg support plate, 2-leg support drive motor, 3-connecting rod a, 4-connecting rod b, 5-connecting rod c, 6-connecting rod d. 7-connecting rod e, 8-connecting rod f, 9-first gear plate drive assembly, 10-front cross tube, 11-rear cross tube 12-side plate, 13-front lifting connecting rod, 14-rear lifting connecting rod, 15-second gear plate drive assembly. DETAILED DESCRIPTION

[0018] In order to better understand the improvements made by the present invention relative to the prior art, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0019] A zero-gravity chair with a leg rest adjustment mechanism is mainly composed of a zero-gravity seat frame A and a leg rest part.

[0020] like Figure 1 As shown in FIG. 3 , the leg support part is mainly composed of a leg support plate 1, a driving motor 2 and a connecting rod assembly, wherein the connecting rod assembly is mainly composed of connecting rod a 3, connecting rod b 4, connecting rod c 5, connecting rod d 6 and connecting rod e 7, and the connecting rod assembly as a whole is a cross linkage mechanism. Two connecting rods a 3, connecting rod b 4, connecting rod c 5, connecting rod d 6 and connecting rod e 7 are provided and symmetrically arranged on the left and right sides of the leg support plate 1 to improve the stability of the structure.

[0021] The upper end of the connecting rod a3 is hinged to the seat, and the lower end is hinged to the lower end of the connecting rod c5, and is driven by the driving motor 2. The upper ends of the connecting rods a3 on the left and right sides are fixed with connecting cross bars. The driving motor 2 drives the connecting cross bars to rotate, thereby driving the connecting rod a3 to rotate. The driving motor 2 is preferably a screw motor. The middle part of the connecting rod a3 is hinged to the middle part of the connecting rod b4, the upper end of the connecting rod b4 and the middle part of the connecting rod c5 are hinged to the upper end and the middle part of the connecting rod d6 respectively, and the upper end of the connecting rod c5 is hinged to the back of the leg support plate 1. The lower end of the connecting rod d6 is hinged to the connecting rod e7, and the other end of the connecting rod e7 is hinged to the back of the leg support plate 1, and the hinge point of the connecting rod e7 and the leg support plate 1 is located below the hinge point of the connecting rod c5 and the leg support plate 1. The lower end of the connecting rod b4 is hinged to the connecting rod f8, and the other end of the connecting rod f8 is hinged to the seat.

[0022] When the leg support is extended, the driving motor 2 is started to drive the connecting rod a3 to rotate clockwise around the upper end and the hinge point, and the lower end of the connecting rod a3 is driven to rotate forward and tilt up, thereby driving the middle connecting rod b4 and the lower connecting rod c5 to rotate forward and unfold at the same time, and the connecting rod a3 drives the forward unfolding. The simultaneous unfolding of the connecting rod b4 and the lower connecting rod c5 makes the connecting rod d6 rotate forward and unfold around the hinge point with the connecting rod b4 under the push of the middle connecting rod a3, and in the connecting rod mechanism composed of the connecting rod c5, the connecting rod b4, the connecting rod e7 and the leg support plate 1 connected in sequence, the leg support plate 1 rotates clockwise and unfolds to complete the angle adjustment.

[0023] like Figure 4As shown in FIG. 6 , the zero-gravity seat frame skeleton A is mainly composed of a front transverse tube 10, a rear transverse tube 11 and a pair of side panels 12, wherein the two ends of the front transverse tube 10 and the rear transverse tube 11 are respectively hinged to the upper ends of the corresponding front lifting links 13 and the rear lifting links 14, and the lower ends of the front lifting links 13 and the rear lifting links 14 are hinged to the seat slide rails on the corresponding sides, each forming a corresponding four-bar linkage.

[0024] A first toothed plate drive assembly 9 is provided at the hinge of the front transverse tube 10 and the front lifting link 13. The first toothed plate drive assembly 9 adjusts the inclination angle of the zero-gravity seat frame skeleton A, wherein the maximum angle position of adjustment is 15°. A second toothed plate drive assembly 15 is provided at the hinge of the rear transverse tube 11 and the rear lifting link 14. The second toothed plate drive assembly 15 adjusts the height of the zero-gravity seat frame skeleton A, wherein the highest position of adjustment is 30 cm. Both the inclination angle and the height of the zero-gravity seat frame skeleton A can be adjusted, and the two cooperate to achieve zero-gravity adjustment, and the first toothed plate drive assembly 9 and the second toothed plate drive assembly 15 are installed below the zero-gravity seat frame skeleton A, thus occupying little space.

[0025] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A zero-gravity chair with a leg rest adjustment mechanism, comprising a zero-gravity seat frame (A) and a leg rest portion, wherein the leg rest portion comprises a leg rest plate (1), a drive motor (2) and a connecting rod assembly, characterized in that; The connecting rod assembly comprises connecting rod a (3), connecting rod b (4), connecting rod c (5), connecting rod d (6) and connecting rod e (7), and the connecting rod assembly as a whole is a cross-link mechanism; the upper end of the connecting rod a (3) is hinged to the seat, and the lower end is hinged to the lower end of the connecting rod c (5), and is driven by a driving motor (2); the middle part of the connecting rod a (3) is hinged to the middle part of the connecting rod b (4), and the upper end of the connecting rod b (4) and the middle part of the connecting rod c (5) are respectively hinged to the connecting rod d (6 ) are hinged at the upper and middle parts, the upper end of the connecting rod c (5) is hinged to the back side of the leg support plate (1); the lower end of the connecting rod d (6) is hinged to the connecting rod e (7), the other end of the connecting rod e (7) is hinged to the back side of the leg support plate (1), and the hinge point between the connecting rod e (7) and the leg support plate (1) is located below the hinge point between the connecting rod c (5) and the leg support plate (1); the lower end of the connecting rod b (4) is hinged to the connecting rod f (8), the other end of the connecting rod f (8) is hinged to the seat.

2. A zero-gravity chair with a leg support adjustment mechanism according to claim 1, characterized in that: The connecting rod a (3), the connecting rod b (4), the connecting rod c (5), the connecting rod d (6) and the connecting rod e (7) are each provided with two and are symmetrically arranged on the left and right sides of the leg support plate (1).

3. A zero-gravity chair with a leg support adjustment mechanism according to claim 2, characterized in that: The upper ends of the connecting rods a (3) on the left and right sides are fixedly provided with connecting cross bars, and the driving motor (2) drives the connecting cross bars to rotate, thereby driving the connecting rods a (3) to rotate.

4. The zero-gravity chair with a leg support adjustment mechanism according to claim 1, characterized in that: The zero-gravity seat frame skeleton (A) comprises a front transverse tube (10), a rear transverse tube (11) and a pair of side panels (12); the two ends of the front transverse tube (10) and the rear transverse tube (11) are respectively hinged to the upper ends of the corresponding front lifting connecting rods (13) and the rear lifting connecting rods (14); the lower ends of the front lifting connecting rods (13) and the rear lifting connecting rods (14) are hinged to the seat slide rails on the corresponding sides.

5. A zero-gravity chair with a leg support adjustment mechanism according to claim 4, characterized in that: A first toothed plate driving assembly (9) is provided at the hinge of the front transverse tube (10) and the front lifting link (13), and a second toothed plate driving assembly (15) is provided at the hinge of the rear transverse tube (11) and the rear lifting link (14). The first toothed plate driving assembly (9) adjusts the inclination angle of the zero-gravity seat frame skeleton (A), and the second toothed plate driving assembly (15) adjusts the height of the zero-gravity seat frame skeleton (A).

6. The zero-gravity chair with a leg support adjustment mechanism according to claim 1, characterized in that: The driving motor (2) is a lead screw motor.

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