Linkage leg support based on automobile seat

Abstract

The utility model discloses a linkage leg support based on an automobile seat, which comprises a backrest assembly, a cushion assembly is movably mounted at the bottom of the backrest assembly, a rail assembly is movably mounted at the bottom of the cushion assembly, a leg support assembly is movably mounted in front of the cushion assembly, the leg support assembly comprises two mounting seats which are symmetrically arranged, and the two mounting seats are movably mounted in front of the cushion assembly. L-shaped rods are hinged to the bottom of the mounting base, a cross rod A is fixedly mounted between the tail ends of the L-shaped rods, extension rods are riveted to the tail ends of the L-shaped rods, a cross rod B is fixedly mounted between the tail ends of the extension rods, and a leg support mounting plate is hinged to the tail ends of the extension rods; the L-shaped rod and the extension rod which are fixedly connected with each other are adopted to replace a traditional two-rod hinge mode, the hinge point of the two rods is upwards moved to the back framework of the backrest assembly, two movable rods are changed into one fixed rod, and the mode not only improves the strength, but also is not easy to shake and does not generate abnormal sound.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile seats, in particular to a leg support based on an automobile seat linkage. Background Art

[0002] The leg rests of car seats on the market are all driven by a separate power module, which is divided into two types: electric and manual. The electric type is generally driven by a reduction motor, while the manual type generally uses a lockable air spring or a handle adjuster; the passenger can adjust the position of the seat leg rest by controlling the motor or manually.

[0003] CN220332526U discloses a backrest and leg rest linkage type seat, including a backrest assembly, a cushion assembly, a backrest angle adjuster and a leg rest assembly, wherein the upper part of the leg rest assembly is connected to the front part of the cushion assembly, the lower part of the backrest assembly is connected to the rear part of the cushion assembly, and the backrest angle adjuster can be used to adjust the rotation angle of the backrest assembly; it also includes a linkage mechanism, the rear part of the linkage mechanism is connected to the backrest assembly, and the front part of the linkage mechanism is connected to the leg rest assembly; when the backrest assembly rotates backward, the backrest assembly drives the linkage mechanism to move forward, and the linkage mechanism pushes the leg rest assembly to rotate forward and upward. The utility model can realize the linkage of the backrest assembly and the leg rest structure, which is convenient for passengers to sit normally or lie back, and there is no need to adjust the angle of the leg rest assembly by a motor, and the structure is simple and the cost is low. The above-mentioned defects exist as follows: the arc bracket 51 is fixedly connected to the backrest frame 11, and the arc bracket 51 and the force transmission bracket 52 are hinged, and the connection strength is not high. When the backrest frame 11 is rotated and opened, there will be certain abnormal noises during the operation of the arc bracket 51 and the force transmission bracket 52. At the same time, the hinge here is not strong enough, and there is a shaking problem during the transmission process. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a car seat-linked leg rest, which adopts an integrated connecting rod to transmit force, has the advantages of high strength and no shaking, and solves the above-mentioned problems.

[0005] In order to achieve the purpose of transmitting force with high strength and no shaking through the integrated connecting rod, the utility model provides the following technical solutions: a linkage leg rest based on a car seat, comprising a backrest assembly, a seat cushion assembly movably mounted on the bottom of the backrest assembly, a track assembly movably mounted on the bottom of the seat cushion assembly, a leg rest assembly movably mounted in front of the seat cushion assembly, the leg rest assembly comprising two symmetrically arranged mounting seats, an L-shaped rod hinged on the bottom of the mounting seat, a cross bar A fixedly mounted between the tail ends of the L-shaped rod, an extension rod riveted to the tail end of the L-shaped rod, a cross bar B fixedly mounted between the tail ends of the extension rods, a leg rest mounting plate hinged on the tail end of the extension rod, a leg rest frame fixedly mounted on the side of the leg rest mounting plate, an L-shaped movable arm hinged on the top of the leg rest mounting plate, and the other end of the L-shaped movable arm hinged on a U-shaped seat.

[0006] Preferably, the mounting seat is fixedly mounted on a frame on the back side of the backrest assembly.

[0007] Preferably, the top of the U-shaped seat is fixedly mounted on the bottom frame of the seat cushion assembly.

[0008] Preferably, the extension rod extends through and below the seat cushion assembly.

[0009] Preferably, the L-shaped rod is located at the hinge between the backrest assembly and the seat cushion assembly.

[0010] Beneficial effects:

[0011] 1. The car seat-linked leg rest adopts an L-shaped rod and an extension rod that are fixedly connected to replace the traditional two-rod hinge method, and moves the hinge points of the two rods upward to the back frame of the backrest assembly, turning two movable rods into a fixed rod. This method not only improves the strength, but also is not easy to shake and will not produce abnormal noise.

[0012] 2. The leg rest is linked to the car seat. The force of the chair back moving downward is transmitted to the extension rod through the L-shaped rod. The extension rod moves forward and pushes the leg rest mounting plate. The leg rest mounting plate rotates and moves upward with the leg rest frame at the hinge point of the L-shaped movable arm. In this way, when the backrest moves downward, the leg rest also opens synchronously. This method adopts four structures of the extension rod, the leg rest mounting plate, the L-shaped movable arm and the U-shaped seat to realize the opening and closing of the leg rest. Compared with the traditional leg rest hinge assembly, the hinge structure here in the present application is simple and cost-effective. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model when viewed from above;

[0014] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model from top view;

[0015] Figure 3 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 4 This is a schematic diagram of the top view of the leg support assembly of the utility model;

[0017] Figure 5 It is a bottom view structural diagram of the leg rest assembly of the utility model.

[0018] In the figure: 1-backrest assembly, 2-seat cushion assembly, 3-track assembly, 4-leg support assembly, 5-mounting seat, 6-L-shaped rod, 7-cross bar A, 8-extension rod, 9-cross bar B, 10-leg support mounting plate, 11-leg support frame, 12-L-shaped movable arm, 13-U-shaped seat. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-3 A linkage leg rest based on a car seat comprises a backrest assembly 1, a seat cushion assembly 2 is movably mounted at the bottom of the backrest assembly 1, a track assembly 3 is movably mounted at the bottom of the seat cushion assembly 2, a leg rest assembly 4 is movably mounted in front of the seat cushion assembly 3, when the backrest assembly 1 is opened and put down, the leg rest assembly 4 will also be opened at the same time; conversely, when the backrest assembly 1 is normally erected, the leg rest assembly 4 will also be folded at the same time.

[0021] See also Figure 4-5 The leg support assembly 4 includes two symmetrically arranged mounting seats 5, which are fixedly mounted on the frame on the back of the backrest assembly 1. An L-shaped rod 6 is hinged at the bottom of the mounting seat 5, and the L-shaped rod 6 is located at the hinge of the backrest assembly 1 and the seat cushion assembly 2. A cross bar A7 is fixedly mounted between the tail ends of the L-shaped rod 6, and the cross bar A7 is used to increase the connection stability of the tail ends of the L-shaped rod 6; an extension rod 8 is riveted to the tail end of the L-shaped rod 6, and the extension rod 8 extends through the bottom of the seat cushion assembly 2. A cross bar B9 is fixedly mounted between the tail ends of the extension rod 8, and the cross bar B9 is used to increase the connection stability of the tail ends of the extension rod 8.

[0022] See also Figure 4-5 The tail end of the extension rod 8 is hinged with a leg support mounting plate 10, and a leg support frame 11 is fixedly installed on the side of the leg support mounting plate 10. An L-shaped movable arm 12 is hinged on the top of the leg support mounting plate 10, and the other end of the L-shaped movable arm 12 is hinged with a U-shaped seat 13. The top of the U-shaped seat 13 is fixedly installed on the bottom frame of the seat cushion assembly 2.

[0023] Working principle: When in use, the force of the backrest moving downward is transmitted to the extension rod 8 through the L-shaped rod 6, the extension rod 8 moves forward and pushes the leg rest mounting plate 10, the leg rest mounting plate 10 brings the leg rest frame 11 to rotate and move upward at the hinge point of the L-shaped movable arm 12, so that when the backrest moves downward, the leg rest is also opened synchronously; conversely, when the backrest is retracted, the extension rod 8 is pulled back by the L-shaped rod 6, the leg rest mounting plate 10 brings the leg rest frame 11 to move downward and rotate at the hinge point of the L-shaped movable arm 12 until it is folded to the side of the seat cushion assembly 3.

[0024] This method uses four structures, namely, an extension rod 8, a leg rest mounting plate 10, an L-shaped movable arm 12 and a U-shaped seat 13, to realize the opening and closing of the leg rest. Compared with the traditional leg rest hinge assembly, the hinge structure of the present application is simple and cost-effective.

[0025] By adopting an L-shaped rod 6 and an extension rod 8 that are fixedly connected to each other to replace the traditional two-rod hinge method, and moving the two-rod hinge point upward to the back frame of the backrest assembly 1, two movable rods are transformed into a fixed rod. This method not only improves the strength, but also is not easy to shake and will not produce abnormal noise.

Claims

1. A car seat-linked leg rest, comprising a backrest assembly (1), a seat cushion assembly (2) movably mounted at the bottom of the backrest assembly (1), a track assembly (3) movably mounted at the bottom of the seat cushion assembly (2), and a leg rest assembly (4) movably mounted in front of the seat cushion assembly (2), characterized in that: The leg support assembly (4) includes two symmetrically arranged mounting seats (5), the bottom of the mounting seat (5) is hinged with an L-shaped rod (6), a cross bar A (7) is fixedly installed between the tail ends of the L-shaped rod (6), an extension rod (8) is riveted to the tail end of the L-shaped rod (6), a cross bar B (9) is fixedly installed between the tail ends of the extension rod (8), the tail end of the extension rod (8) is hinged with a leg support mounting plate (10), the side of the leg support mounting plate (10) is fixedly installed with a leg support frame (11), the upper part of the leg support mounting plate (10) is hinged with an L-shaped movable arm (12), and the other end of the L-shaped movable arm (12) is hinged with a U-shaped seat (13).

2. The car seat linkage leg support according to claim 1, characterized in that: The mounting seat (5) is fixedly mounted on the frame at the back of the backrest assembly (1).

3. The car seat linkage leg support according to claim 1, characterized in that: The top of the U-shaped seat (13) is fixedly mounted on the bottom frame of the seat cushion assembly (2).

4. The car seat linkage leg support according to claim 1, characterized in that: The extension rod (8) extends through and below the seat cushion assembly (2).

5. The car seat linkage leg support according to claim 1, characterized in that: The L-shaped rod (6) is located at the hinged portion between the backrest assembly (1) and the seat cushion assembly (2).

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