A leg support device with collapsible function

Abstract

The present invention discloses a leg support device with a collapsible function, which relates to the technical field of automobile seats. The device comprises a fixed bracket connected to a seat frame, a rotating mechanism connected to the fixed bracket, an angle drive motor arranged on the fixed bracket, and a collapsible part connecting the angle drive motor and the rotating mechanism. The rotating mechanism comprises a supporting frame, a guard plate, a slide rail, a telescopic guard plate, and front and rear drive motors. The collapsible part is formed with a first cavity and a second cavity, and an elastically deformable cantilever is formed between the first cavity and the second cavity. The present invention can effectively protect the seat leg support, has an anti-pinch function during the adjustment process, and is electrically stepless adjustable. It can stop at any angle according to the needs of the occupants, meet the leg support needs, greatly improve comfort and functional diversity, and has a high degree of parts integration, occupies a small space, has a simple structure, and is low in cost, making it suitable for promotion and application.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile seats, in particular to a leg support device with a collapsible function. Background Art

[0002] The leg rest of a car seat provides comprehensive support for the passenger's legs and achieves the best possible riding comfort. However, in actual applications, passengers may overload the leg rest due to improper use, such as sitting on it, which may even cause structural damage.

[0003] Existing overload protection devices, such as common automobile crush boxes, absorb energy by deforming the stepped or pagoda-shaped crush boxes to protect other parts during a car collision. Another example is the safety block of a punch press, which blocks the punching force at the expense of the safety block breaking when the punch press is overloaded, thereby protecting the punch press frame and transmission system. However, these measures are all devices that sacrifice pawns to save the car, and they will always be damaged. The above-mentioned heavy-duty impact destruction protection solutions cannot be transferred to seat leg rests.

[0004] The application publication number is CN 109228987 A, and the invention name is "Leg rest collapse mechanism for a seat and its resetting method." Its main purpose is to protect the entire leg rest frame system from damage to parts caused by hard force. However, its collapse mechanism structure is relatively complex, and it also uses a traditional four-bar linkage structure to expand or retract the leg rest. It does not have the function of extending the leg rest forward and backward, and cannot meet the current customer requirements for multi-directional adjustment and comfort.

[0005] Therefore, it is necessary to design a leg support device with a collapsible function to improve the above problems. Summary of the Invention

[0006] In response to the above problems in the prior art, the present invention provides a leg rest device with a collapsible function, which has a simple structure, occupies a small space, can effectively protect the seat leg rest, has an anti-pinch function, is electrically steplessly adjustable, and can be stopped at any angle.

[0007] To achieve the above object, the technical solution adopted by the present invention is:

[0008] A leg support device with a collapse function includes a fixed bracket connected to a seat frame, a rotating mechanism connected to the fixed bracket, an angle drive motor arranged on the fixed bracket for driving the movement of the rotating mechanism, and a collapse part connecting the angle drive motor and the rotating mechanism. The rotating mechanism includes a support frame rotatably connected to the fixed bracket, a guard plate arranged on the support frame, slide rails arranged on both sides of the support frame, a telescopic guard plate connected to the slide rail and arranged above the guard plate, and a front and rear drive motor arranged below the support frame for driving the telescopic guard plate. The collapse part is formed with a first cavity and a second cavity, an elastically deformable cantilever is formed between the first cavity and the second cavity, and a semicircular mounting groove is provided on the first cavity for connecting the angle drive motor.

[0009] Preferably, the angle drive motor includes a screw motor and a screw connected to the screw motor.

[0010] Preferably, one end of the lead screw is connected to the semicircular mounting groove.

[0011] Preferably, the cantilever elastically deforms when the telescopic guard plate is subjected to an external force greater than 600N.

[0012] Preferably, after the cantilever collapses, the portion of the angle drive motor connected to the semicircular mounting groove is detached from the semicircular mounting groove and moves in the first cavity.

[0013] Preferably, the front and rear drive motors are screw motors.

[0014] Preferably, the collapse portion is an integrally formed metal part.

[0015] Preferably, the material of the collapse portion is 65Mn spring steel.

[0016] Due to the adoption of the above technical solution, compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The present invention provides a collapsible leg support device with a collapsible portion, which can effectively protect the seat leg support and has an anti-pinch function during adjustment;

[0018] 2. The present invention adopts a leg support device with a collapsible function, which adopts a screw motor and electrically adjustable stepless adjustment. It can stop at any angle according to the needs of the occupants, meeting the leg support needs and greatly improving comfort and functional diversity.

[0019] 3. The leg support device with a collapsible function of the present invention has a high degree of parts integration, occupies a small space, has a high degree of automation, and can be adjusted with one button;

[0020] 4. The leg support device with a collapsing function of the present invention has a simple structure, low cost, and is suitable for popularization and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] By referring to the following description in conjunction with the accompanying drawings, and with a more complete understanding of the present invention, other objects and results of the present invention will become more clear and easy to understand. In the accompanying drawings:

[0022] Figure 1 It is a structural diagram of an example of the present invention;

[0023] Figure 2 It is a front view of an embodiment of the present invention;

[0024] Figure 3 yes Figure 2 Cross-sectional view along the AA axis;

[0025] Figure 4 yes Figure 2 Cross-sectional view along the BB direction;

[0026] Figure 5 is another front view of an embodiment of the present invention;

[0027] Figure 6 yes Figure 5 A cross-sectional view of the leg support in the CC direction in the extended and uncollapsed state;

[0028] Figure 7 yes Figure 5 A cross-sectional view of the leg support in the CC direction showing the leg support in an extended and collapsed state;

[0029] Figure 8 It is another structural schematic diagram of an embodiment of the present invention;

[0030] Figure 9 It is a structural exploded diagram of an embodiment of the present invention;

[0031] Figure 10 is a cross-sectional view of a collapsed portion of an embodiment of the present invention;

[0032] The figure marks include: fixed bracket 1, rotating mechanism 2, angle drive motor 3, collapse part 4, support frame 21, guard plate 22, slide rail 23, telescopic guard plate 24, front and rear drive motor 25, screw motor 31, screw 32, first cavity 41, semicircular mounting groove 411, second cavity 42, cantilever 43. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions of various embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. It should be noted that all figures are illustrative only. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0036] The present invention will be further described in detail below through specific implementation examples in conjunction with the accompanying drawings.

[0037] Reference Figures 1 to 10 A leg support device with a collapsing function includes a fixed bracket 1, a rotating mechanism 2, an angle drive motor 3, and a collapsing part 4. The fixed bracket 1 is connected to the seat frame, the rotating mechanism 2 is connected to the fixed bracket 1 and can rotate and retract, the angle drive motor 3 is arranged on the fixed bracket 1, the collapsing part 4 is connected to the angle drive motor 3 and the rotating mechanism 2, the angle drive motor 3 drives the rotating mechanism 2 to rotate through the collapsing part 4, and the angle drive motor 3 includes a screw motor 31 and a screw 32 connected to the screw motor 31.

[0038] The rotating mechanism 2 includes a support frame 21, a guard plate 22, an automotive-grade high-strength slide rail 23, a telescopic guard plate 24, and a front and rear drive motor 25. The support frame 21 is rotatably connected to the fixed bracket 1, and the guard plate 22 is arranged on the support frame 21. Slide rails 23 are arranged on both sides of the support frame 21. The telescopic guard plate 24 is connected to the moving rail of the slide rail 23 and is arranged above the guard plate 22. The front and rear drive motors 25 are arranged below the support frame 21. The front and rear drive motors 25 are used to drive the telescopic guard plate 24 to move forward and backward. The front and rear drive motors 25 are screw motors. The front and rear drive motors 25 and the angle drive motor 3 both use screw motors, which are electrically stepless and can stop at any angle according to the needs of the occupants to meet the leg support needs and greatly improve comfort and functional diversity.

[0039] The collapsible portion 4 is formed with a first cavity 41 and a second cavity 42. An elastically deformable cantilever 43 is formed between the first cavity 41 and the second cavity 42. The first cavity 41 is provided with a semicircular mounting groove 411 for connecting the angle drive motor 3. One end of the lead screw 32 is connected to the semicircular mounting groove 411. When the telescopic guard plate 24 is subjected to an external force greater than 600N, the cantilever 43 elastically deforms. After the cantilever 43 collapses (elastic deformation), the portion of the angle drive motor 3 connected to the semicircular mounting groove 411 is detached from the semicircular mounting groove 411 and moves within the first cavity 41. Preferably, the collapsible portion 4 is an integrally formed metal part, and the preferred material of the collapsible portion 4 is 65Mn spring steel. The leg rest is provided with a collapsible portion 4, which can effectively protect the seat leg rest and also has an anti-pinch function during the adjustment process.

[0040] The following will refer to Figures 1 to 10 The working principle of the present invention is described.

[0041] The occupant adjusts the leg rest as needed by pressing buttons. The angle drive motor 3 controls the angle rotation of the leg rest, and the front and rear drive motors 25 control the forward and backward movement of the telescopic guard plate 24 on the leg rest, thereby realizing four-way adjustment. When the telescopic guard plate 24 is extended and subjected to an external force greater than 600N, the cantilever 43 elastically deforms and collapses. Subsequently, the part of the angle drive motor 3 connected to the semicircular mounting groove 411 detaches from the semicircular mounting groove 411 and moves in the direction away from the semicircular mounting groove 411 in the first cavity 41, effectively protecting the seat leg rest while preventing the occupant from being pinched during the adjustment process. After the cantilever 43 collapses, it can be manually reset by manually lifting the leg rest upward, and one end of the screw 32 is connected to the semicircular mounting groove 411 again.

[0042] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A leg support device with a collapsible function, characterized in that: It includes a fixed bracket connected to the seat frame, a rotating mechanism connected to the fixed bracket, an angle drive motor arranged on the fixed bracket for driving the movement of the rotating mechanism, and a collapse part connecting the angle drive motor and the rotating mechanism. The rotating mechanism includes a supporting frame rotatably connected to the fixed bracket, a guard plate arranged on the supporting frame, slide rails arranged on both sides of the supporting frame, a telescopic guard plate connected to the slide rail and arranged above the guard plate, and a front and rear drive motor arranged below the supporting frame for driving the telescopic guard plate. The collapse part is formed with a first cavity and a second cavity. An elastically deformable cantilever is formed between the first cavity and the second cavity. The first cavity is provided with a semicircular mounting groove for connecting the angle drive motor.

2. A leg support device with a collapsible function according to claim 1, characterized in that: The angle drive motor includes a screw motor and a screw connected to the screw motor.

3. The leg support device with a collapsible function according to claim 2, characterized in that: One end of the lead screw is connected to the semicircular mounting groove.

4. The leg support device with a collapsible function according to claim 1, characterized in that: After the cantilever collapses, the portion of the angle drive motor connected to the semicircular mounting groove detaches from the semicircular mounting groove and moves in the first cavity.

5. The leg support device with a collapsible function according to claim 1, characterized in that: The front and rear drive motors are lead screw motors.

6. The leg support device with a collapsible function according to claim 1, characterized in that: The collapse portion is an integrally formed metal part.

7. The leg support device with a collapsible function according to claim 6, characterized in that: The material of the collapse portion is 65Mn spring steel.

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