Integrated leg support for automobile seat

Abstract

The utility model discloses an integrated leg support for an automobile seat, which comprises a seat frame, the front part of the seat frame is provided with a first driving mechanism and a supporting framework capable of sliding back and forth, the supporting framework is used for supporting thighs of passengers, and the first driving mechanism is used for driving the supporting framework to slide out of the front part of the seat frame or retract into the seat frame; a second driving mechanism and a shank supporting assembly connected with the supporting framework in an overturning mode are arranged on the front portion of the supporting framework, the shank supporting assembly is used for supporting the shank of the passenger, and the second driving mechanism is used for driving the shank supporting assembly to conduct overturning movement relative to the supporting framework. The seat has the advantages that through the combined design of the thigh support and the shank support, the legs of a passenger are completely supported, and then the riding comfort of the passenger is guaranteed.

Description

Technical Field

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

[0002] When people ride in a car, in order to increase riding comfort, they usually like to turn the seat back backward and sit in a backward leaning position. However, in this sitting position, the contact point between the passenger's buttocks and the seat cushion is closer to the front end of the seat than the contact point between the passenger's buttocks and the seat cushion when sitting upright. This makes the front end of the passenger's thighs suspended in the air, and the overall riding comfort needs to be improved.

[0003] To improve passenger comfort, two existing solutions are available on the market: 1. A thigh support is installed at the front of the seat cushion. When the passenger is in a reclining sitting position, the thigh support can extend forward to support the front of the passenger's thigh. However, with this method, the passenger's calves are always in a drooping position. 2. A small leg support is installed on the lower side of the front of the seat. The small leg support can rotate forward and extend to support the passenger's calves, allowing the passenger to lie down on the seat. However, in this mode, the front of the passenger's thigh is still suspended in the air. Utility Model Content

[0004] In view of this, the utility model provides an integrated leg rest for a car seat, which aims to ensure that the occupant's legs can be fully supported, thereby ensuring overall riding comfort.

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

[0006] An integrated leg rest for a car seat includes a seat frame, characterized in that: a first drive mechanism and a support frame that can slide back and forth are provided at the front of the seat frame, the support frame is used to support the thighs of the occupant, and the first drive mechanism is used to drive the support frame to slide out from the front of the seat frame or retract into the seat frame; a second drive mechanism and a calf support assembly connected to the support frame in a flipping manner are provided at the front of the support frame, the calf support assembly is used to support the calf of the occupant, and the second drive mechanism is used to drive the calf support assembly to flip relative to the support frame.

[0007] By adopting the above structure, the front end of the occupant's thigh can be supported by the support frame slidingly set at the front end of the seat frame, and the calf support assembly flipped on the support frame can support the occupant's calf. Through the combined design of the thigh support and the calf support, the occupant's legs are fully supported, thereby ensuring the occupant's riding comfort.

[0008] Preferably, the calf support assembly includes a rotating bracket rotatably mounted on the support frame and a leg support extension assembly slidably mounted on the rotating bracket, the leg support extension assembly including a driving cross bar slidably mounted on the rotating bracket and a first extension plate connected to the driving cross bar, the driving cross bar having a guide block slidably engaged therewith at its end, the sliding direction of the guide block relative to the driving cross bar and the sliding direction of the driving cross bar relative to the rotating bracket being perpendicular in space, the guide block being rotatably connected to the support frame via a first support shaft, the rotating bracket being rotatably connected to the support frame via a second support shaft, the first support shaft being eccentrically mounted relative to the second support shaft. With the above structure, the driving cross bar can synchronously slide forward while the rotating bracket rotates, thereby driving the first extension plate to synchronously extend and retract.

[0009] Preferably, a third slide rail is provided on the inner side of the rotating bracket, and the first extension plate is slidably mounted on the third slide rail. A first linkage mechanism is provided between the driving crossbar and the first extension plate. When the driving crossbar slides relative to the rotating bracket, the first linkage mechanism forces the first extension plate to slide synchronously. With this structure, the first linkage mechanism further ensures that the first extension plate can move synchronously with the driving crossbar during rotation of the rotating bracket.

[0010] Preferably, the first linkage mechanism includes a first link, a second link, and a third link hinged in sequence. The end of the first link remote from the second link is hinged to the rotating bracket. The middle portion of the second link is rotatably connected to the driving crossbar. The end of the third link remote from the second link is hinged to the first extension plate. This three-link structure facilitates forward deployment of the first extension plate and also makes the overall structure more compact when the first extension plate is folded within the rotating bracket.

[0011] Preferably, a fourth link is provided between the first and third links, with both ends of the fourth link being hinged to the first and third links, respectively, and arranged parallel to the second link. With this structure, the parallelogram-shaped four-bar linkage provides a more stable sliding direction for the first extension plate.

[0012] Preferably, a connecting rod extending along the width of the seat frame is provided in the middle portion thereof, and the first drive mechanism is disposed between the connecting rod and the support frame; the first drive mechanism comprises a first drive motor, a first screw rod, and a first drive block; the first drive motor is fixedly mounted on the support frame; the first screw rod is disposed at the output end of the first drive motor and extends toward the side where the connecting rod is located; the first drive block is hinged at the middle portion of the connecting rod and is threadedly connected to the first screw rod. The above structure enables electrically controlled deployment and folding of the thigh support.

[0013] Preferably, the second drive mechanism includes a second drive motor, a second screw, and a second drive block. The second drive motor is hingedly connected to the bottom of the rotating bracket. The second screw is disposed at the output end of the second drive motor and extends toward the side where the support frame is located. The second drive block is hingedly connected to the center of the bottom of the support frame and is threadedly connected to the second screw. With this structure, the rotation of the rotating bracket can be electrically controlled.

[0014] Preferably, a second extension plate is slidably mounted on the front end of the first extension plate, and a third drive mechanism and a second linkage mechanism are provided between the first and second extension plates, each of which is configured to drive the second extension plate to slide relative to the first extension plate. This structure enables a two-stage extension of the calf support, thereby meeting the calf support needs of passengers of different heights.

[0015] Preferably, the third drive mechanism includes a third drive motor, a third screw, and a third drive block. The third drive motor is fixedly mounted on the second extension plate. The third screw is disposed at the output end of the third drive motor and extends toward the first extension plate. The third drive block is hinged to the second linkage mechanism and threadedly connected to the third screw. This structure enables electrically controlled extension and retraction of the second extension plate.

[0016] Preferably, the second linkage mechanism includes a fifth link, a sixth link, and a seventh link hinged in sequence, wherein the end of the fifth link away from the sixth link is hinged to the first extension plate, the middle portion of the sixth link is hinged to the third drive block, and the end of the seventh link away from the sixth link is hinged to the third drive motor; an eighth link is also provided between the fifth and seventh links, with both ends of the eighth link hinged to the fifth and seventh links, respectively, and the eighth link is arranged parallel to the sixth link. The above structure, through the four-bar linkage, can make the sliding direction of the second extension plate more stable, and also make the overall structure more compact when the second extension plate is folded.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. The integrated leg support for automobile seats provided by the utility model can support the front end of the occupant's thigh through a support frame that is slidably arranged at the front end of the seat frame, and can support the occupant's calf through a calf support assembly that is flipped and arranged on the support frame. Based on this, the combined design of the thigh support and the calf support achieves complete support for the occupant's legs, thereby ensuring the occupant's riding comfort.

[0019] 2. The first extension plate and the second extension plate are connected by a four-bar linkage, which ensures that when the entire calf support is folded, the overall structure is more compact and the space occupancy rate is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the integrated leg rest in the unfolded state;

[0021] Figure 2 This is a schematic diagram of the structure of the integrated leg support in the folded state;

[0022] Figure 3 A structural diagram showing the layout of the guide block 8;

[0023] Figure 4 This is a structural diagram of the calf support in the secondary extension state;

[0024] Figure 5 A schematic diagram showing the structure of the first driving mechanism 14;

[0025] Figure 6 Schematic diagram showing the structure of the second driving mechanism 15. DETAILED DESCRIPTION

[0026] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0027] like Figure 1 and Figure 2 As shown, an integrated leg rest for a car seat includes a seat frame 1, a first slide rail 2 is fixedly installed on the inner side of the front end of the seat frame 1 by bolts, the first slide rail 2 is arranged along the front-to-back direction of the car seat, and a support frame 3 is slidably installed on the first slide rail 2, and the support frame 3 is used to support the front end of the occupant's thigh. In this embodiment, the first slide rail 2 is arranged at an angle, and when the support frame 3 is unfolded, the occupant's thigh is slightly raised. A first driving mechanism 14 is also provided between the front end of the seat frame 1 and the support frame 3, and the first driving mechanism 14 is used to drive the support frame 3 to slide out from the front end of the seat frame 1 or retract into the seat frame 1. A second driving mechanism 15 and a calf support assembly that is flip-connected to the support frame 3 are provided at the front end of the support frame 3, and the calf support assembly is used to support the calf of the occupant, and the second driving mechanism 15 is used to drive the calf support assembly to flip relative to the support frame 3.

[0028] By sliding the support frame 3 at the front end of the seat frame, the front end of the occupant's thigh is supported, and then the calf support component connected by flipping on the support frame 3 is used to support the occupant's calf. Based on this, the combined design of the thigh support and the calf support allows the occupant's legs to be fully supported, ensuring the occupant's riding comfort.

[0029] like Figure 1and Figure 3 As shown, the calf support assembly includes a rotating bracket 4 rotatably set on the support frame 3 and a leg support extension assembly slidably set on the rotating bracket 4. Second slide rails 5 are fixedly installed on the outer sides of both ends of the rotating bracket 4 by bolts. The leg support extension assembly includes a driving cross bar 6 slidably assembled on the second slide rail 5 and a first extension plate 7 connected to the driving cross bar 6. Guide blocks 8 that slide with it are installed at both ends of the driving cross bar 6. The sliding direction of the guide block 8 relative to the driving cross bar 6 is perpendicular to the sliding direction of the driving cross bar 6 relative to the second slide rail 5 in space. The guide block 8 is rotatably installed on the support frame 3 through the first support shaft 9. The rotating bracket 4 is rotatably connected to the support frame 3 through the second support shaft 10, and the first support shaft 9 is eccentrically set relative to the second support shaft 10. Based on this, when the rotating bracket 4 rotates forward relative to the supporting frame 3, since the guide block 8 is eccentrically set and the driving cross bar 6 is slidably set on the second slide rail 5, the rotational force of the guide block 8 cannot drive the driving cross bar 6 to rotate synchronously, but the eccentric rotational force of the guide block 8 can force the guide block 8 to slide downward relative to the end of the driving cross bar 6, while the driving cross bar 6 can slide forward relative to the second slide rail 5. Since the driving cross bar 6 is connected to the first extension plate 7, the first extension plate 7 can extend forward synchronously while the rotating bracket 4 rotates forward.

[0030] Specifically, such as Figure 3 and Figure 4 As shown, a third slide rail 11 is fixedly installed on the inner side of the second slide rail 5 by bolts, and the first extension plate 7 is slidably installed on the third slide rail 11. A first linkage mechanism 12 is installed between the driving cross bar 6 and the first extension plate 7. When the driving cross bar 6 slides relative to the second slide rail 5, the first linkage mechanism 12 can force the first extension plate 7 to slide synchronously.

[0031] Furthermore, the first linkage mechanism 12 includes a first link 12a, a second link 12b and a third link 12c that are hinged in sequence, wherein one end of the first link 12a away from the second link 12b is hinged on the rotating bracket 4, the middle part of the second link 12b is rotatably connected to the middle part of the driving cross bar 6, and one end of the third link 12c away from the second link 12b is hinged at the middle position of the first extension plate 7.

[0032] A fourth link 12d is installed between the first link 12a and the third link 12c. Both ends of the fourth link 12d are hinged to the first link 12a and the third link 12c respectively. The fourth link 12d is arranged parallel to the second link 12b.

[0033] The driving crossbar 6 and first extension plate 7 are connected by a four-bar linkage, and the second and third rails 5 and 11 are stacked. This allows the first extension plate 7 to extend synchronously with the rotation of the rotating bracket 4, increasing the extension length. Furthermore, when the first extension plate 7 is folded, the entire calf support assembly is more compact. The four-bar parallelogram structure ensures that the sliding extension of the first extension plate 7 is more stable and directional.

[0034] like Figure 1 As shown, a connecting rod 13 extending along the width direction of the seat frame 1 is provided in the middle portion thereof, and a first driving mechanism 14 is provided between the connecting rod 13 and the supporting frame 3 .

[0035] Specifically, such as Figure 5 As shown, the first drive mechanism 14 includes a first drive motor 14a, a first screw rod 14b, and a first drive block 14c. The first drive motor 14a is fixedly mounted on the support frame 3. The first screw rod 14b is mounted on the output end of the first drive motor 14a and extends toward the side where the connecting rod 13 is located. The first drive block 14c is hinged at the middle of the connecting rod 13 and is threadedly connected to the first screw rod 14b. When the first drive motor 14a is running, the first screw rod 14b and the first drive block 14c drive the support frame 3 to slide back and forth relative to the first slide rail 2.

[0036] like Figure 6 As shown, the second driving mechanism 15 is arranged between the rotating bracket 4 and the supporting frame 3, and specifically includes a second driving motor 15a, a second screw rod 15b and a second driving block 15c, wherein the second driving motor 15a is hinged at the lower middle part of the rotating bracket 4, the second screw rod 15b is arranged on the output end of the second driving motor 15a, and extends toward the side where the supporting frame 3 is located, and the second driving block 15c is hinged at the bottom middle position of the supporting frame 3 and is threadedly connected to the second screw rod 15b.

[0037] like Figure 1 As shown, in this embodiment, fourth rails 16 are bolted to the inner sides of both ends of the first extension plate 7. A second extension plate 17 is slidably mounted on the fourth rail 16. The slidably mounted second extension plate 17 further extends the calf support's length, thereby meeting the leg support needs of passengers of different heights. A third drive mechanism 18 and a second linkage mechanism 19 are also provided between the first extension plate 7 and the second extension plate 17. These mechanisms electrically control the sliding extension of the second extension plate 17.

[0038] Specifically, such as Figure 4As shown, the third drive mechanism 18 includes a third drive motor 18a, a third screw rod 18b and a third drive block 18c, wherein the third drive motor 18a is fixedly mounted at the front end position of the second extension plate 17, the third screw rod 18b is arranged on the output end of the third drive motor 18a and extends toward the side where the first extension plate 7 is located, and the third drive block 18c is hinged on the second linkage mechanism 19 and is threadedly connected to the third screw rod 18b.

[0039] Furthermore, the second linkage assembly 19 includes a fifth link 19a, a sixth link 19b, and a seventh link 19c, which are hinged in sequence. The end of the fifth link 19a away from the sixth link 19b is hinged to the middle of the first extension plate 7. The middle of the sixth link 19b is hinged to the third drive block 18c. The end of the seventh link 19c away from the sixth link 19b is hinged to the third drive motor 18a. An eighth link 19d is mounted between the fifth link 19a and the seventh link 19c. Its ends are hinged to the fifth link 19a and the seventh link 19c, respectively, and the eighth link 19d is arranged parallel to the sixth link 19b.

[0040] By setting up the third driving mechanism 18 and the second linkage mechanism 19, the sliding of the second extension plate 17 is electrically controlled. At the same time, the second linkage mechanism 19 is a four-link structure with a parallelogram structure, which can make the overall structure of the second extension plate 17 more compact when it is folded.

[0041] 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 various similar expressions without violating the purpose and claims of the present invention. Such changes fall within the scope of protection of the present invention.

Claims

1. An integrated leg support for a car seat, comprising a seat frame (1), characterized in that: The front portion of the seat frame (1) is provided with a first driving mechanism (14) and a support frame (3) that can slide forward and backward, the support frame (3) being used to support the thighs of the occupant, and the first driving mechanism (14) being used to drive the support frame (3) to slide out from the front portion of the seat frame (1) or to be retracted into the seat frame (1); The front portion of the support frame (3) is provided with a second drive mechanism (15) and a calf support assembly connected to the support frame (3) in a flipping manner. The calf support assembly is used to support the calf of the passenger, and the second drive mechanism (15) is used to drive the calf support assembly to flip relative to the support frame (3).

2. The integrated leg support for a car seat according to claim 1, characterized in that: The calf support assembly includes a rotating bracket (4) rotatably arranged on the support frame (3) and a leg support extension assembly slidably arranged on the rotating bracket (4), the leg support extension assembly includes a driving cross bar (6) slidably arranged on the rotating bracket (4) and a first extension plate (7) connected to the driving cross bar (6), the end of the driving cross bar (6) is provided with a guide block (8) that slides with it, the sliding direction of the guide block (8) relative to the driving cross bar (6) and the sliding direction of the driving cross bar (6) relative to the rotating bracket (4) are perpendicular in space, the guide block (8) is rotatably connected to the support frame (3) through a first support shaft (9), the rotating bracket (4) is rotatably connected to the support frame (3) through a second support shaft (10), and the first support shaft (9) is eccentrically arranged relative to the second support shaft (10).

3. The integrated leg support for a car seat according to claim 2, characterized in that: A third slide rail (11) is provided on the inner side of the rotating bracket (4), and the first extension plate (7) is slidably assembled on the third slide rail (11). A first linkage mechanism (12) is provided between the driving cross bar (6) and the first extension plate (7). When the driving cross bar (6) slides relative to the rotating bracket (4), the first linkage mechanism (12) can force the first extension plate (7) to slide synchronously.

4. The integrated leg support for a car seat according to claim 3, characterized in that: The first linkage mechanism (12) comprises a first link (12a), a second link (12b) and a third link (12c) which are hinged in sequence, wherein the end of the first link (12a) away from the second link (12b) is hinged to the rotating bracket (4), the middle part of the second link (12b) is rotatably connected to the driving cross bar (6), and the end of the third link (12c) away from the second link (12b) is hinged to the first extension plate (7).

5. The integrated leg support for a car seat according to claim 4, characterized in that: A fourth link (12d) is provided between the first link (12a) and the third link (12c), and both ends of the fourth link (12d) are hinged to the first link (12a) and the third link (12c) respectively. The fourth link (12d) is arranged in parallel with the second link (12b).

6. The integrated leg support for a car seat according to claim 1, characterized in that: A connecting rod (13) extending along the width direction of the seat frame (1) is provided in the middle portion thereof, and the first driving mechanism (14) is provided between the connecting rod (13) and the supporting frame (3); The first driving mechanism (14) comprises a first driving motor (14a), a first screw rod (14b) and a first driving block (14c); the first driving motor (14a) is fixedly arranged on the supporting frame (3); the first screw rod (14b) is arranged on the output end of the first driving motor (14a) and extends toward the side where the connecting rod (13) is located; the first driving block (14c) is hinged at the middle position of the connecting rod (13) and is threadedly connected to the first screw rod (14b).

7. The integrated leg support for a car seat according to claim 2, characterized in that: The second driving mechanism (15) comprises a second driving motor (15a), a second screw rod (15b) and a second driving block (15c); the second driving motor (15a) is hinged to the bottom of the rotating bracket (4); the second screw rod (15b) is arranged on the output end of the second driving motor (15a) and extends toward the side where the supporting frame (3) is located; the second driving block (15c) is hinged to the middle position of the bottom of the supporting frame (3) and is threadedly connected to the second screw rod (15b).

8. The integrated leg support for a car seat according to claim 2, characterized in that: A second extension plate (17) is slidably mounted on the front end of the first extension plate (7); a third driving mechanism (18) and a second linkage mechanism (19) are provided between the first extension plate (7) and the second extension plate (17); the third driving mechanism (18) and the second linkage mechanism (19) are both used to drive the second extension plate (17) to slide relative to the first extension plate (7).

9. The integrated leg support for a car seat according to claim 8, characterized in that: The third driving mechanism (18) comprises a third driving motor (18a), a third screw rod (18b) and a third driving block (18c); the third driving motor (18a) is fixedly arranged on the second extension plate (17); the third screw rod (18b) is arranged on the output end of the third driving motor (18a) and extends toward the side where the first extension plate (7) is located; the third driving block (18c) is hinged on the second linkage mechanism (19) and is threadedly connected to the third screw rod (18b).

10. The integrated leg support for a car seat according to claim 9, characterized in that: The second linkage mechanism (19) comprises a fifth link (19a), a sixth link (19b) and a seventh link (19c) which are hinged in sequence, wherein the end of the fifth link (19a) away from the sixth link (19b) is hinged to the first extension plate (7), the middle part of the sixth link (19b) is hinged to the third drive block (18c), and the end of the seventh link (19c) away from the sixth link (19b) is hinged to the third drive motor (18a); An eighth connecting rod (19d) is also provided between the fifth connecting rod (19a) and the seventh connecting rod (19c). Both ends of the eighth connecting rod (19d) are hinged to the fifth connecting rod (19a) and the seventh connecting rod (19c) respectively. The eighth connecting rod (19d) is arranged in parallel with the sixth connecting rod (19b).

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