Leg support adjusting mechanism of automobile seat

Abstract

The utility model discloses an automobile seat leg support adjusting mechanism which comprises a leg support fixing frame, a push-pull motor fixedly installed on the leg support fixing frame, a folding shear fork movably hinged to the leg support fixing frame and a driving rotating shaft rotationally installed on the leg support fixing frame and fixedly connected with one end of a driving connecting rod of the folding shear fork. A leg support framework is movably hinged to the side, away from the folding shear fork, of the leg support movable frame, an overturning motor and a driving lead screw are installed on the leg support movable frame, and a push-pull connecting rod for driving the leg support framework to overturn up and down is movably hinged between the lead screw nut sliding block and the leg support framework. A leg support framework capable of turning over up and down is arranged on a leg support movable frame at the front end of a folding shear fork of a telescopic support, the functions of telescopic support adjustment and up-down turning adjustment are achieved at the same time, and a passenger can adjust the appropriate supporting length of the folding shear fork and the appropriate supporting angle of the leg support framework according to self requirements; and a better supporting effect and higher personnel adaptability are achieved.

Description

Technical Field

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

[0002] Car seats provide seating for drivers and passengers, and should have a reasonable layout, be safe and reliable, have a shape that conforms to the human-machine relationship, and meet basic adjustment needs. With the improvement of living standards, people's requirements for car seats are getting higher and higher, from traditional mechanical seats to electric seats. No matter which type of seat, they have met the above conditions.

[0003] In the existing electric seats for cars, on the basis of seat height adjustment and backrest angle adjustment, the ones with relatively higher configuration will add leg support adjustment function, which can further improve the comfort of the seat. At present, there are mainly two types of leg support adjustment mechanisms for electric seats equipped in cars on the market: one is front and rear telescopic support adjustment, and the other is up and down flip support adjustment.

[0004] For the former, if you want to improve the support effect, you must extend the scissors fork, which is not friendly to people with short thighs; the latter flips the support and improves the support effect by flipping it upwards, but it does not have the front and back adjustment function. For people with long thighs, the length support is relatively insufficient. Since the two leg support adjustment mechanisms of electric car seats on the market have their own shortcomings, affecting comfort, in order to improve comfort and adaptability and meet the needs of people of different heights, a new type of leg support adjustment mechanism for car seats is proposed. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a car seat leg rest adjustment mechanism, which is used to solve the problem that the front and rear telescopic support and adjustment leg rests and the up and down flip support and adjustment leg rests for electric car seats on the market are not sufficiently adaptable to people of different heights.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0007] A car seat leg support adjustment mechanism comprises a leg support fixing frame, a push-pull motor fixedly mounted on the leg support fixing frame, a folding scissors fork movably hinged on the leg support fixing frame, and a driving shaft rotatably mounted on the leg support fixing frame and fixedly connected to one end of a driving connecting rod of the folding scissors fork, the driving shaft is transmission-connected with the push-pull motor, one end of the folding scissors fork away from the leg support fixing frame is movably hinged with a leg support movable frame, the side of the leg support movable frame away from the folding scissors fork is movably hinged with a leg support frame, a flipping motor and a driving screw are installed on the leg support movable frame, the flipping motor is transmission-connected with the driving screw, a screw nut slider is transmission-connected to the driving screw, a push-pull connecting rod for driving the leg support frame to flip up and down is movably hinged between the screw nut slider and the leg support frame.

[0008] Preferably, the width of the leg support frame is greater than the width of the leg support movable frame.

[0009] Preferably, the leg support movable frame and the leg support frame are both hollow frame structures.

[0010] Preferably, the driving screw is arranged inside the leg support movable frame and parallel to the leg support movable frame, and the flip motor is arranged inside the leg support movable frame and the folding scissors.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The utility model provides a flippable leg support frame on the leg support movable frame at the front end of the telescopic supported folding scissors, and both the leg support movable frame and the leg support frame are central control frame structures, which not only reduces the overall weight but also allows the interior to conveniently accommodate components such as a flipping motor, a driving screw rod and a push-pull connecting rod to reduce the overall volume after folding, thereby achieving the functions of telescopic support adjustment and up and down flipping adjustment. Passengers can adjust the appropriate folding scissors support length and leg support angle according to their own needs, thereby achieving better supporting effect and stronger personnel adaptability, and solves the problem that the front and rear telescopic support adjustment leg rests and the up and down flip support adjustment leg rests of automobile electric seats currently on the market are insufficiently adaptable to people of different heights. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of the folding scissors fork of the utility model when it is unfolded;

[0015] Figure 3 It is a schematic diagram of the internal structure of the utility model after the folding scissors fork is unfolded and the leg support frame is flipped over.

[0016] In the figure: 1. Leg support fixing frame; 2. Push-pull motor; 3. Folding scissors fork; 4. Driving connecting rod; 5. Driving shaft; 6. Leg support movable frame; 7. Leg support frame; 8. Flipping motor; 9. Driving screw rod; 10. Screw rod nut slider; 11. Push-pull connecting rod. DETAILED DESCRIPTION

[0017] 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.

[0018] like Figure 1-3 As shown, the utility model provides a technical solution: a leg support adjustment mechanism for a car seat, comprising a leg support fixing frame 1, a push-pull motor 2 fixedly mounted on the leg support fixing frame 1, a folding scissors fork 3 movably hinged on the leg support fixing frame 1, and a driving shaft 5 rotatably mounted on the leg support fixing frame 1 and fixedly connected to one end of a driving connecting rod 4 of the folding scissors fork 3, wherein the driving shaft 5 is transmission-connected to the push-pull motor 2;

[0019] The end of the folding scissors fork 3 away from the leg support fixing frame 1 is movably hinged with a leg support movable frame 6, and the side of the leg support movable frame 6 away from the folding scissors fork 3 is movably hinged with a leg support frame 7, the width of the leg support frame 7 is greater than the width of the leg support movable frame 6, the leg support movable frame 6 and the leg support frame 7 are both hollow frame structures, and a flip motor 8 and a driving screw 9 are installed on the leg support movable frame 6, and the flip motor 8 is transmission-connected to the driving screw 9;

[0020] A screw nut slider 10 is transmission-connected to the driving screw 9, and a push-pull connecting rod 11 is movably hinged between the screw nut slider 10 and the leg support frame 7 to drive the leg support frame 7 to flip up and down. The driving screw 9 is arranged inside the leg support movable frame 6 and parallel to the leg support movable frame 6, and the flipping motor 8 is arranged inside the leg support movable frame 6 and the folding scissors 3.

[0021] Working principle: A leg support frame 7 that can be flipped up and down is set on the leg support movable frame 6 at the front end of the telescopic supported folding scissors 3. The leg support movable frame 6 and the leg support frame 7 are both central control frame structures, which not only reduces the overall weight, but also allows the interior to conveniently accommodate components such as the flipping motor 8, the driving screw rod 9 and the push-pull connecting rod 11 to reduce the overall volume after folding, thereby achieving the functions of telescopic support adjustment and up and down flipping adjustment. Passengers can adjust the appropriate support length of the folding scissors 3 and the support angle of the leg support frame 7 according to their own needs, so as to achieve better support effect and stronger personnel adaptability.

[0022] It should be noted that, in this article, terms such as "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A leg support adjustment mechanism for a car seat, comprising a leg support fixing frame (1), a push-pull motor (2) fixedly mounted on the leg support fixing frame (1), a folding scissors fork (3) movably hinged on the leg support fixing frame (1), and a driving shaft (5) rotatably mounted on the leg support fixing frame (1) and fixedly connected to one end of a driving connecting rod (4) of the folding scissors fork (3), wherein the driving shaft (5) is drivingly connected to the push-pull motor (2), and is characterized in that: The end of the folding scissors (3) away from the leg support fixing frame (1) is movably hinged with a leg support movable frame (6), and the side of the leg support movable frame (6) away from the folding scissors (3) is movably hinged with a leg support frame (7), and a flipping motor (8) and a driving screw (9) are installed on the leg support movable frame (6), and the flipping motor (8) is transmission-connected to the driving screw (9), and a screw nut slider (10) is transmission-connected to the driving screw (9), and a push-pull connecting rod (11) for driving the leg support frame (7) to flip up and down is movably hinged between the screw nut slider (10) and the leg support frame (7).

2. The leg support adjustment mechanism for a car seat according to claim 1, characterized in that: The width of the leg support frame (7) is greater than the width of the leg support movable frame (6).

3. The leg support adjustment mechanism for a car seat according to claim 1, characterized in that: The leg support movable frame (6) and the leg support frame (7) are both hollow frame structures.

4. The leg support adjustment mechanism for a car seat according to claim 3, characterized in that: The driving screw rod (9) is arranged inside the leg support movable frame (6) and is parallel to the leg support movable frame (6), and the flip motor (8) is arranged inside the leg support movable frame (6) and the folding scissors (3).

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