Ultra-thin automobile seat leg support

Abstract

The utility model discloses an ultra-thin automobile seat leg support which comprises a base body used for being fixedly installed at the bottom of the front end of an automobile seat and a leg support bottom plate rotatably installed on the base body, a first sliding rail is arranged on the top of the leg support bottom plate, a first extending plate is installed on the first sliding rail in a sliding mode, and the first extending plate slides. The supporting area of the leg support can be extended. The leg support has the advantages that the requirements of passengers with different height sections for the leg support are met in a sliding extension mode, and compared with a traditional mode that a connecting rod mechanism is adopted for achieving leg support extension, the leg support is more compact in structure and smaller in occupied space in a folded state in a sliding rail mode.

Description

Technical Field

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

[0002] The leg rest is usually folded and installed at the bottom of the car seat. It can be unfolded by manual or electric control and can be used to support the passenger's calves to ensure the passenger's riding comfort.

[0003] In the prior art, the extension length of the leg rest is generally increased by a connecting rod structure, thereby ensuring that passengers of all heights have a good riding experience. However, when the connecting rod structure is folded, the overall thickness of the leg rest is much thicker than that of the leg rest without the extension mechanism. However, the overall installation space of the leg rest is also very limited. If the leg rest is too thick, the front end of the car seat frame will bulge forward, affecting the normal riding comfort of passengers and the overall aesthetics of the car interior. Utility Model Content

[0004] In view of this, the utility model provides an ultra-thin car seat leg rest, aiming to provide a leg rest with a light and thin structure and a telescopic function.

[0005] To achieve the above purpose, the technical solution of the utility model is as follows:

[0006] An ultra-thin car seat leg rest comprises a base for fixed installation at the bottom of the front end of the car seat, and a leg rest base plate rotatably installed on the base, characterized in that a first slide rail is provided on the top of the leg rest base plate, a first extension plate is slidably installed on the first slide rail, and the first extension plate slides on the first slide rail to extend the support area of ​​the leg rest.

[0007] The above structure satisfies the needs of passengers of different heights for leg rests by sliding and extending the leg rests. Compared with the traditional method of extending the leg rest by a connecting rod mechanism, the structure of the slide rail is more compact and occupies less space when folded.

[0008] Preferably, a driving cross bar is slidably mounted on the first slide rail, and a guide block is provided at the end of the driving cross bar to be slidably matched with the driving cross bar, and the sliding direction of the guide block relative to the driving cross bar is perpendicular to the sliding direction of the driving cross bar relative to the first slide rail in space, and the guide block is rotatably connected to the base body through a first support shaft, and the leg support base plate is rotatably connected to the base body through a second support shaft, and the first support shaft is eccentrically arranged relative to the second support shaft; a linkage mechanism is provided between the driving cross bar and the first extension plate, and when the driving cross bar slides relative to the first slide rail, the linkage mechanism can force the first extension plate to slide synchronously. With the above structure, when the leg support base plate rotates, the guide block can also rotate relative to the base body, and the rotational stress on the guide block can force the driving cross bar to move up and down relative to the guide block, and force the driving cross bar to slide left and right relative to the first slide rail, and then through the linkage mechanism, when the leg support base plate rotates, the first extension plate can be extended or folded synchronously.

[0009] Preferably, the linkage mechanism comprises a first link, a second link and a third link which are hinged in sequence, wherein the end of the first link away from the second link is hinged on the leg support bottom plate, the middle of the second link is rotatably connected to the driving cross bar, and the end of the third link away from the second link is hinged on the first extension plate. With the above structure, through the three-link mechanism, it can be ensured that when the guide block forces the driving cross bar to slide left and right relative to the first slide rail, the first extension plate can also slide synchronously.

[0010] Preferably, a fourth link is provided between the first link and the third link, the two ends of the fourth link are respectively hinged to the first link and the third link, and the fourth link is arranged parallel to the second link. With the above structure, the stability of the linkage movement can be improved through the four-bar linkage.

[0011] As a preference: the ultra-thin car seat leg rest also includes a first driving module for driving the leg rest base plate to flip, the first driving module includes a first driving motor, a first screw fixed to the output shaft of the first driving motor, a first driving block threadedly mounted on the first screw, and a first connecting rod hingedly mounted on the lower side of the leg rest base plate, wherein the first driving motor is fixedly mounted on the base, and one end of the first connecting rod away from the leg rest base plate is rotatably connected to the first driving block. With the above structure, the leg rest base plate can be driven by the motor to rotate relative to the base.

[0012] As a preferred embodiment: the ultra-thin car seat leg support also includes a second driving module for driving the leg support base plate to flip, the second driving module includes a second driving motor, a second screw rod fixedly connected to the output shaft of the second driving motor, a second driving block threadedly mounted on the second screw rod, and a second connecting rod fixedly mounted on the lower side of the leg support base plate, wherein the second driving motor is rotatably mounted on the base body, and the end of the second connecting rod away from the leg support base plate is rotatably connected to the second driving block. With the above structure, the leg support base plate can be driven by the motor to rotate relative to the base body.

[0013] Preferably, the first extension plate is provided with a second slide rail, and the second extension plate is slidably mounted on the second slide rail. The above structure can further extend the length of the leg rest, thereby meeting the needs of passengers of different heights for the leg rest.

[0014] Preferably, a telescopic driving mechanism is fixedly disposed on the first extension plate, for driving the second extension plate to slide forward and backward relative to the first extension plate. With the above structure, the second extension plate can be driven to telescope by a motor.

[0015] Preferably, the base includes a support plate and two ears mounted on the front end of the support plate, and the first support shaft and the second support shaft are mounted on the ears. With the above structure, the ears can facilitate the rotation of the leg support base relative to the base.

[0016] Preferably, a cover plate is provided on the first extension plate, and in the folded state, the cover plate can cover the first slide rail, and the second extension plate can be folded inside the cover plate. The above structure can ensure that the overall structure of the leg rest is very compact in the folded state.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The ultra-thin car seat leg rest provided by the utility model meets the needs of passengers of different heights for leg rests through the slidably installed first extension plate. Compared with the traditional method of increasing the extension length of the leg rest through a connecting rod mechanism, the utility model has a more compact overall structure in the folded state and occupies a smaller assembly space.

[0019] 2. Through the eccentrically arranged guide block, and the mutually sliding assembly relationship between the guide block, the driving cross bar and the first slide rail, the driving cross bar can slide relative to the first slide rail while the leg rest base plate rotates, and combined with the linkage mechanism, the first extension plate can be extended synchronously while the leg rest base plate rotates. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a structural schematic diagram of a leg support equipped with a first driving module 10 when it is unfolded;

[0021] Figure 2 It is a structural schematic diagram of the leg support equipped with the first driving module 10 when it is folded;

[0022] Figure 3 A schematic diagram showing the structure of the first driving module 10;

[0023] Figure 4 is a schematic structural diagram of a leg support equipped with a second driving module 11 when it is unfolded;

[0024] Figure 5 A schematic diagram showing the structure of the second driving module 11;

[0025] Figure 6 It is a structural schematic diagram of the leg support equipped with the second driving module 11 when it is folded;

[0026] Figure 7 To show the structural diagram of the linkage mechanism 6;

[0027] Figure 8 A schematic diagram showing the three-dimensional structure of the linkage mechanism 6;

[0028] Fig. 9 A structural schematic diagram showing the assembly method between the first extension plate 4 and the second extension plate 13;

[0029] Fig.10 To show Figure 2 Schematic diagram of the structure showing the specific internal folding conditions. DETAILED DESCRIPTION

[0030] The utility model is further described below in conjunction with embodiments and drawings.

[0031] like Figure 1 As shown, an ultra-thin car seat leg rest comprises a base 1 for fixed installation at the bottom of the front end of the car seat, and a leg rest base plate 2 rotatably installed on the base 1, wherein a first slide rail 3 is fixedly installed on the top of the leg rest base plate 2 by bolts. In this embodiment, two first slide rails 3 are provided on the top of the leg rest base plate 2 and are distributed on both sides of the top of the leg rest base plate 2, and a first extension plate 4 is slidably installed on the first slide rail 3. By sliding the first extension plate 4, the support area of ​​the leg rest can be extended.

[0032] Such a design meets the needs of passengers of different heights for leg rests by sliding and extending the leg rests. Compared with the traditional method of using a connecting rod mechanism to extend the leg rests, when folded, this embodiment uses a slide rail, which has a more compact structure and occupies less space overall.

[0033] Furthermore, a driving cross bar 5 is slidably mounted on the first slide rail 3, and a guide block 7 is provided at the end of the driving cross bar 5 to slide with it. In this embodiment, the sliding direction of the guide block 7 relative to the driving cross bar 5 is perpendicular to the sliding direction of the driving cross bar 5 relative to the first slide rail 3 in space. Figure 1 , that is, the guide block 7 slides up and down relative to the driving cross bar 5, and the driving cross bar 5 slides left and right relative to the first slide rail 3. In this embodiment, the guide block 7 is rotatably connected to the base 1 through the first support shaft 8, and the leg support base plate 2 is rotatably installed on the base 1 through the second support shaft 9, and the first support shaft 8 is eccentrically arranged relative to the second support shaft 9. Based on this, when the leg support base plate 2 rotates around the second support shaft 9, due to the eccentric arrangement of the first support shaft 8, and the guide block 7 is slidably installed relative to the driving cross bar 5, and the driving cross bar 5 is slidably installed relative to the first slide rail 3, the sliding directions of the two are perpendicular to each other, that is, the rotation of the guide block 7 cannot drive the driving cross bar 5 to rotate synchronously, which results in the rotation of the guide block 7 being subject to resistance, and these resistances can force the driving cross bar 5 to slide up and down relative to the guide block 7 and slide left and right relative to the first slide rail 3.

[0034] like Figure 3 As shown, the base 1 includes a support plate 1a and two ears 1b installed at the front end of the support plate 1a, and the first support shaft 8 and the second support shaft 9 are both installed on the ears 1b. Such a design can facilitate the rotational installation between the base 1 and the leg support base plate 2.

[0035] Furthermore, a linkage mechanism 6 is provided between the driving cross bar 5 and the first extension plate 4 . When the driving cross bar 5 slides relative to the first slide rail 3 , the linkage mechanism 6 can force the first extension plate 4 to slide synchronously.

[0036] Based on the above structural design, when the leg rest base plate 2 rotates relative to the base body 1, the guide block 7 can force the driving cross bar 5 to slide relative to the first slide rail 3. Combined with the design of the linkage mechanism 6, the leg rest of the car seat can be extended or folded synchronously when flipped.

[0037] Specifically, Figure 7 , Figure 8 and Fig.10As shown, the linkage mechanism 6 includes a first connecting rod 6a rotatably mounted on the leg rest base plate 2, a second connecting rod 6b rotatably mounted on the driving cross rod 5 and a third connecting rod 6c rotatably mounted on the first extension plate 4, and both ends of the second connecting rod 6b are respectively hinged to the first connecting rod 6a and the third connecting rod 6c, so that the linkage mechanism 6 is a three-link mechanism. Such a design ensures that when the driving cross rod 5 is forced to slide, the first extension plate 4 can slide synchronously through the three-link mechanism, and the three-link mechanism can make the distance between the driving cross rod 5 and the first extension plate 4 variable. When the leg rest is in a folded state, the driving cross rod 5 and the first extension plate 4 can abut against each other. In this way, the longitudinal space occupied by the leg rest in the folded state is greatly reduced.

[0038] In this embodiment, a fourth link 6d is further arranged between the first link 6a and the third link 6c. The two ends of the fourth link 6d are hinged to the first link 6a and the third link 6c respectively, and the fourth link 6d is arranged parallel to the second link 6b, so that a four-bar mechanism is formed between the first link 6a, the second link 6b, the third link 6c and the fourth link 6d. Such a design can improve the stability of the movement of the linkage mechanism 6.

[0039] The leg support base plate 2 can be rotated relative to the base body 1 by manual rotation or electric control. In this embodiment, the following two electric control modes are shown:

[0040] 1. Fixed installation of motor

[0041] like Figures 1 to 3 As shown, a first driving module 10 is arranged between the base 1 and the leg support base plate 2, and the first driving module 10 includes a first driving motor 10a, a first screw rod 10b fixedly connected to the output shaft of the first driving motor 10a, a first driving block 10c threadedly mounted on the first screw rod 10b, and a first connecting rod 10d hingedly mounted on the lower side of the leg support base plate 2, wherein the first driving motor 10a is fixedly mounted on the base 1, and the first connecting rod 10d is rotatably connected to the first driving block 10c at one end away from the leg support base plate 2. In this embodiment, a guide rod 15 is also fixedly mounted on the base 1, and the first driving block 10c is slidably mounted on the guide rod 15, so that when the first driving motor 10a is driven, the first driving block 10c can slide along the length direction of the first screw rod 10b. With this design, when the first driving motor 10a is driven, the first driving block 10c can slide along the length direction of the first screw rod 10b. Since the length of the first connecting rod 10d is fixed, its two ends are respectively hinged on the first driving block 10c and the leg support base plate 2. When the sliding distance of the first driving block 10c exceeds the rotation range of the first connecting rod 10d, the sliding of the first driving block 10c is enough to force the leg support base plate 2 to rotate relative to the base 1.

[0042] 2. Motor rotating installation

[0043] like Figures 4 to 6 As shown, a second drive module 11 is arranged between the base 1 and the leg support base plate 2, and the second drive module 11 includes a second drive motor 11a, a second screw rod 11b fixedly connected to the output shaft of the second drive motor 11a, a second drive block 11c threadedly mounted on the second screw rod 11b, and a second connecting rod 11d fixedly mounted on the lower side of the leg support base plate 2, wherein the second drive motor 11a is rotatably mounted on the base 1, and the end of the second connecting rod 11d away from the leg support base plate 2 is rotatably connected to the second drive block 11c. With such a design, combined with Figure 6 , driving the second driving motor 11a, the second driving block 11c can move downward along the length direction of the second screw rod 11b. Since the second driving block 11c is only hinged on the second connecting rod 11d, and the second connecting rod 11d is fixedly mounted on the leg support base plate 2, it is equivalent to that the second driving block 11c is directly hinged on the leg support base plate 2. This causes the second driving block 11c to be unable to slide freely like the first driving block 10c. The second driving block 11c moves along the length direction of the second screw rod 11b, forcing the leg support base plate 2 and the second driving motor 11a to rotate, that is, driving the second driving motor 11a, which can force the leg support base plate 2 and the second driving motor 11a to rotate synchronously relative to the base 1.

[0044] For example Fig. 9 As shown, second slide rails 12 are fixedly installed on both sides of the first extension plate 4 by bolts, and a second extension plate 13 is slidably mounted on the second slide rails 12. Such a design further meets the needs of passengers of different heights for leg rests. In this embodiment, the second extension plate 13 is also electrically controlled, and a telescopic drive mechanism 14 is fixedly installed at the bottom of the first extension plate 4. The telescopic drive mechanism 14 and the second extension plate 13 are also connected by a screw rod. The telescopic drive mechanism 14 is driven to enable the second extension plate 13 to slide forward and backward relative to the first extension plate 4.

[0045] like Figure 2 and Fig.10 As shown, a cover plate 4a is fixed to the first extension plate 4 by bolts. When the leg rest introduced in this embodiment is in the folded state, the cover plate 4a can cover the first slide rail 3 and the driving cross bar 5, and the second extension plate 12 can also be folded inside the cover plate 4a. Such a design makes the entire leg rest very light and thin in the folded state, and the overall installation space occupies a small area.

[0046] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Under the guidance of the present invention, ordinary technicians in this field can make a variety of similar expressions without violating the purpose and claims of the present invention, and such changes fall within the scope of protection of the present invention.

Claims

1. An ultra-thin leg support for a car seat, comprising a base (1) for fixed installation at the bottom of the front end of the car seat, and a leg support bottom plate (2) rotatably installed on the base (1), characterized in that: A first slide rail (3) is provided on the top of the leg support bottom plate (2), a first extension plate (4) is slidably mounted on the first slide rail (3), and the first extension plate (4) slides on the first slide rail (3) to extend the support area of ​​the leg support; A second slide rail (12) is provided on the first extension plate (4), and a second extension plate (13) is slidably mounted on the second slide rail (12).

2. The ultra-thin car seat leg support according to claim 1, characterized in that: A driving cross bar (5) is slidably mounted on the first slide rail (3); a guide block (7) slidably matched with the driving cross bar (5) is provided at the end of the driving cross bar (5); a sliding direction of the guide block (7) relative to the driving cross bar (5) and a sliding direction of the driving cross bar (5) relative to the first slide rail (3) are perpendicular in space; the guide block (7) is rotatably connected to the base body (1) via a first support shaft (8); the leg support base plate (2) is rotatably connected to the base body (1) via a second support shaft (9); the first support shaft (8) is eccentrically arranged relative to the second support shaft (9); A linkage mechanism (6) is provided between the driving cross bar (5) and the first extension plate (4); when the driving cross bar (5) slides relative to the first slide rail (3), the linkage mechanism (6) can force the first extension plate (4) to slide synchronously.

3. The ultra-thin car seat leg support according to claim 2, characterized in that: The linkage mechanism (6) comprises a first connecting rod (6a), a second connecting rod (6b) and a third connecting rod (6c) which are hinged in sequence, wherein one end of the first connecting rod (6a) away from the second connecting rod (6b) is hinged on the leg support base plate (2), the middle part of the second connecting rod (6b) is rotatably connected to the driving cross rod (5), and one end of the third connecting rod (6c) away from the second connecting rod (6b) is hinged on the first extension plate (4).

4. The ultra-thin car seat leg support according to claim 3, characterized in that: A fourth connecting rod (6d) is also provided between the first connecting rod (6a) and the third connecting rod (6c), and both ends of the fourth connecting rod (6d) are respectively hinged to the first connecting rod (6a) and the third connecting rod (6c), and the fourth connecting rod (6d) is arranged in parallel with the second connecting rod (6b).

5. The ultra-thin car seat leg support according to claim 1, characterized in that: The invention also comprises a first driving module (10) for driving the leg support base plate (2) to flip, wherein the first driving module (10) comprises a first driving motor (10a), a first screw rod (10b) fixedly connected to the output shaft of the first driving motor (10a), a first driving block (10c) threadedly mounted on the first screw rod (10b), and a first connecting rod (10d) hingedly mounted on the lower side of the leg support base plate (2), wherein the first driving motor (10a) is fixedly mounted on the base body (1), and the end of the first connecting rod (10d) away from the leg support base plate (2) is rotatably connected to the first driving block (10c).

6. The ultra-thin car seat leg support according to claim 1, characterized in that: The invention also comprises a second driving module (11) for driving the leg support base plate (2) to flip, wherein the second driving module (11) comprises a second driving motor (11a), a second screw rod (11b) fixedly connected to the output shaft of the second driving motor (11a), a second driving block (11c) threadedly mounted on the second screw rod (11b), and a second connecting rod (11d) fixedly mounted on the lower side of the leg support base plate (2), wherein the second driving motor (11a) is rotatably mounted on the base body (1), and the end of the second connecting rod (11d) away from the leg support base plate (2) is rotatably connected to the second driving block (11c).

7. The ultra-thin car seat leg support according to claim 1, characterized in that: A telescopic driving mechanism (14) is fixedly provided on the first extension plate (4) and is used for driving the second extension plate (13) to slide forward and backward relative to the first extension plate (4).

8. The ultra-thin car seat leg support according to claim 2, characterized in that: The base (1) comprises a support plate (1a) and two support ears (1b) mounted on the front end of the support plate (1a), and the first support shaft (8) and the second support shaft (9) are mounted on the support ears (1b).

9. The ultra-thin car seat leg support according to claim 1, characterized in that: A cover plate (4a) is provided on the first extension plate (4); in a folded state, the cover plate (4a) can cover the first slide rail (3), and the second extension plate (13) can be folded inside the cover plate (4a).

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