Ultra-thin shank support assembly

Abstract

The utility model discloses an ultra-thin shank support assembly which comprises a base body and a leg support support rotationally installed on the base body, a first extension plate is installed on the leg support support in a sliding mode, a connecting rod assembly is arranged between the first extension plate and the leg support support, and the connecting rod assembly can move to pull the first extension plate to slide relative to the leg support support; a transmission assembly is arranged on the base body and comprises a driving cross rod and a linkage piece, one end of the linkage piece is hinged to the end of the driving cross rod, the other end of the linkage piece is hinged to the base body, the middle of the driving cross rod is associated with the connecting rod assembly, and when the leg support bracket rotates forwards relative to the base body, the transmission assembly can force the connecting rod assembly to move. The leg support has the advantages that through the transmission assembly and the connecting rod assembly, the leg support rotates, meanwhile, the synchronous extending function is achieved, original sliding installation of the driving transverse rod through a guide block is replaced by rotating installation of the linkage piece, when the leg support is folded, the thickness of the guide block is omitted, and the compactness of the leg support is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile seat leg supports, in particular to an ultra-thin calf leg support assembly. 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, a connecting rod structure is generally used to increase the extension length of the leg rest, thereby ensuring a good riding experience for passengers of all heights. However, when the connecting rod structure is folded, the overall thickness of the leg rest is much thicker than that of a leg rest without an extension mechanism.

[0004] In response to the above problems, the applicant has proposed an ultra-thin leg rest. For details, please refer to the Chinese invention patent publication number CN118322968A. The extension plate is installed in a sliding manner to ensure that the entire leg rest is lighter and thinner when folded. In addition, through the eccentrically arranged guide block, when the leg rest base plate rotates, the extension plate can slide synchronously along the first slide rail.

[0005] Since the guide block is eccentrically arranged at the front end of the base, when the leg rest is folded, its overall thickness includes not only the thickness of the leg rest itself but also the thickness of the guide block itself, so the compactness of the structure still needs to be optimized. Utility Model Content

[0006] In view of this, the utility model provides an ultra-thin calf support assembly, which aims to further reduce the overall thickness of the leg support after folding.

[0007] To achieve the above purpose, the technical solution of this utility model is as follows:

[0008] An ultra-thin calf support assembly comprises a base fixedly arranged at the front end of the bottom of a car seat, and a leg support bracket rotatably mounted on the base, a first extension plate being slidably mounted on the leg support bracket, the first extension plate being used to support the calf of the occupant, and characterized in that a connecting rod assembly is provided between the first extension plate and the leg support bracket, and the movement of the connecting rod assembly can pull the first extension plate to slide relative to the leg support bracket; a transmission assembly is provided on the base, the transmission assembly comprises a driving cross bar and linkage plates located at both ends of the driving cross bar, one end of the linkage plate is hinged to the end of the driving cross bar, and the other end is hinged to the base, the middle part of the driving cross bar is associated with the linkage assembly, and when the leg support bracket rotates forward relative to the base, the transmission assembly can force the linkage assembly to move.

[0009] With this structure, the drive crossbar and connecting rod assembly enable the first extension plate to slide forward synchronously when the leg rest bracket rotates relative to the base, ensuring both rotation and extension of the leg rest. The drive crossbar, previously mounted slidingly via a guide block, is now pivotally mounted via a linkage plate. When the leg rest is folded, the drive crossbar and linkage plate are integrated into the base, further reducing the overall size of the leg rest.

[0010] Preferably, the connecting rod assembly includes a first connecting rod, a second connecting rod, and a third connecting rod, which are hinged in sequence. The end of the first connecting rod away from the second connecting rod is hinged to the leg support bracket, the middle portion of the second connecting rod is hinged to the driving cross rod, and the end of the third connecting rod away from the second connecting rod is hinged to the first extension plate. With the above structure, when the leg support bracket rotates forward relative to the base, the distance between the leg support bracket and the driving cross rod increases. The action of the connecting rod can cause the first extension plate to expand forward relative to the leg support bracket, thereby allowing the leg support to simultaneously expand forward while rotating.

[0011] Preferably, a fourth link is provided between the first link and the third link, with both ends of the fourth link hinged to the first link and the third link respectively, and the fourth link is arranged parallel to the second link. With the above structure, the parallelogram structure makes the link assembly more stable when unfolded and folded.

[0012] Preferably, the base has two sets of mounting uprights, the driving crossbar is positioned transversely at the front ends of the two sets of mounting uprights, and both ends of the driving crossbar are provided with side-bent lugs. One end of the linkage piece is hinged to the lugs, and the other end is hinged to the front ends of the mounting uprights. When the leg rest is in a folded state, the driving crossbar and the linkage piece can be folded into the space enclosed by the two sets of mounting uprights. The above structure, through the design of the lugs and mounting uprights, facilitates the installation of the linkage piece, allows the driving crossbar and the linkage piece to be folded into the space enclosed by the mounting uprights, and ensures that the overall thickness of the leg rest is reduced when folded.

[0013] Preferably, the leg rest bracket is provided with first slide rails on both sides, the first extension plate is slidably mounted on the first slide rails, and second slide rails are provided on both sides of the first extension plate, the second extension plate is slidably mounted on the second slide rails. This structure enables a two-stage extension of the leg rest, while also reducing the overall thickness of the leg rest.

[0014] Preferably, a telescopic drive mechanism is provided at the bottom of the first extension plate, and the telescopic drive mechanism is used to drive the second extension plate to slide along the second slide rail. With the above structure, the secondary extension of the leg rest can be electrically controlled.

[0015] Preferably, a rotation drive mechanism is provided between the base and the leg support bracket, and the rotation drive mechanism is used to drive the leg support bracket to rotate relative to the base. With the above structure, the rotation of the leg support can be electrically controlled.

[0016] Preferably, the rotation drive mechanism includes a drive motor, a screw connected to the output end of the drive motor, and a drive block threadedly mounted on the screw. The drive motor is hingedly connected to the leg support bracket, and the drive block is hingedly connected to an end of the base body away from the leg support bracket. With this structure, the leg support can be rotated by moving the drive block on the screw.

[0017] Preferably, the leg support bracket is hinged to the base via a first support shaft, and the linkage plate is hinged to the base via a second support shaft, wherein the second support shaft is eccentrically disposed relative to the first support shaft. This structure ensures that the driving crossbar rotates synchronously with the rotation of the leg support bracket, and the rotation of the driving crossbar forces the linkage assembly to extend and retract, thereby achieving synchronous extension of the first extension plate.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] The ultra-thin calf support assembly provided by this utility model utilizes a drive crossbar and connecting rod assembly. When the leg support bracket rotates relative to the base, the first extension plate can slide forward synchronously, thereby ensuring that the leg support rotates and extends simultaneously. The drive crossbar, which was previously mounted by sliding on a guide block, is now mounted by a rotating linkage plate. When the leg support is folded, the drive crossbar and linkage plate can be integrated into the base, eliminating the additional width and thickness of the push block and helping to improve the leg support's compactness. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural diagram of the leg rest assembly when it is unfolded;

[0021] Figure 2 This is a structural diagram of the leg support assembly when folded;

[0022] Figure 3 It is a structural schematic diagram of the connecting rod assembly 6 in the unfolded state;

[0023] Figure 4 A schematic diagram showing the assembly structure of the second extension plate 9;

[0024] Figure 5 A structural diagram showing the positional relationship between the first support shaft 12 and the second support shaft 13;

[0025] Figure 6 is a structural diagram of the rotary drive mechanism 11;

[0026] Figure 7 It is a structural schematic diagram of the driving cross bar 5. DETAILED DESCRIPTION

[0027] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0028] like Figure 1 and Figure 2 As shown, an ultra-thin calf support assembly includes a base 1 fixedly mounted on the front end of the bottom of the car seat, and a leg support bracket 2 rotatably mounted on the base 1. A first extension plate 3 is slidably mounted on the leg support bracket 2, and the first extension plate 3 is used to support the calf of the occupant. A connecting rod assembly 6 is installed between the first extension plate 3 and the leg support bracket 2. The movement of the connecting rod assembly 6 can pull the first extension plate 3 to slide relative to the leg support bracket 2. A transmission assembly is also provided on the base 1. The transmission assembly includes a driving cross bar 5 and a linkage plate 4 located at both ends of the driving cross bar 5. One end of the linkage plate 4 is hinged to the end of the driving cross bar 5, and the other end is hinged to the base 1. The middle part of the driving cross bar 5 is associated with the linkage assembly 6. When the leg support bracket 2 rotates forward relative to the base 1, the transmission assembly can force the linkage assembly 6 to move.

[0029] Through the transmission assembly, and with the middle portion of the drive crossbar 5 connected to the connecting rod assembly 6, when the leg support bracket 2 rotates forward relative to the base 1, the transmission assembly forces the connecting rod assembly 6 to move, thereby synchronously extending the first extension plate 3 forward. The drive crossbar 5 is rotatably mounted via the linkage plate 4. Compared to a sliding installation via an eccentrically positioned guide block, when the leg support is folded, the connecting plate 4 can be rotated and placed inside the base 1, further reducing the overall thickness of the folded leg support.

[0030] like Figure 3 As shown, the connecting rod assembly 6 includes a first connecting rod 6a, a second connecting rod 6b, and a third connecting rod 6c, which are hinged in sequence. In this embodiment, a mounting post 2a extends from the leg support bracket 2 toward the side where the first extension plate 3 is located. The end of the first connecting rod 6a away from the second connecting rod 6b is hinged to the mounting post 2a, the middle portion of the second connecting rod 6b is hinged to the middle position of the driving cross bar 5, and the end of the third connecting rod 6c away from the second connecting rod 6b is hinged to the first extension plate 3. With this design, when the leg support bracket 2 rotates forward relative to the base 1, the mounting post 2a can move away from the driving cross bar 5. During this process, the connecting rod assembly 6 is in a gradually expanded state, thereby allowing the first extension plate 3 to slide forward.

[0031] In this embodiment, a fourth link 6d is also installed 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. With this design, the parallelogram structure makes the link assembly 6 more stable when folded and unfolded.

[0032] like Figure 5 As shown, the leg support bracket 2 is hinged to the base 1 through the first support shaft 12, the linkage plate 4 is hinged to the base 1 through the first support shaft 13, the second support shaft 13 is eccentrically arranged relative to the first support shaft 12, and the second support shaft 13 is close to the front end of the car seat. With this design, the leg support bracket 12 can synchronously drive the driving cross bar 5 to rotate while rotating. When the driving cross bar 5 rotates, the distance between it and the mounting column 2a changes, and then the first extension plate 3 is moved through the movement of the connecting rod assembly 6 to achieve synchronous sliding.

[0033] Further, such as Figure 5 and Figure 7 As shown, mounting vertical plates 1a are formed at both ends of the base 1, and the driving cross bar 5 is placed horizontally at the front ends of the two groups of mounting vertical plates 1a, and ears 5a bent toward the base 1 are formed at both ends of the driving cross bar 5. One end of the linkage piece 4 is hinged on the ear 5a, and the other end is hinged to the front end of the mounting vertical plates 1a. When the leg rest is in the folded state, the driving cross bar 5 and the linkage piece 4 can be folded in the space surrounded by the two groups of mounting vertical plates 1a, thereby further ensuring that the overall thickness of the leg rest is lower when it is folded.

[0034] like Figure 4 As shown, a first slide rail 7 is fixedly installed on the left and right sides of the leg rest bracket 2, and the first extension plate 3 is slidably installed on the first slide rail 7. A second slide rail 8 is fixedly installed on both sides of the first extension plate 3, and a second extension plate 9 is slidably installed on the second slide rail 8. This design realizes the secondary extension of the leg rest, thereby meeting the needs of passengers of more height groups for leg rests.

[0035] like Figure 4 As shown, a telescopic drive mechanism 10 is fixedly installed at the bottom of the first extension plate 3. The telescopic drive mechanism 10 is used to drive the second extension plate 9 to slide along the second slide rail 8. In this embodiment, the telescopic drive mechanism 10 is a screw motor, and the middle part of the second extension plate 9 is threadedly assembled on the screw, so as to realize electric control of the telescopic movement of the second extension plate 9.

[0036] like Figure 6 As shown, in this embodiment, a rotation drive mechanism 11 is installed between the base 1 and the leg rest bracket 2. The rotation drive mechanism 11 is used to drive the leg rest bracket 2 to rotate relative to the base 1, thereby electrically controlling the flipping of the leg rest.

[0037] Specifically, the rotation drive mechanism 11 includes a drive motor 11a, a screw rod 11b fixedly mounted on the output end of the drive motor 11a, and a drive block 11c threadedly mounted on the screw rod 11b. The drive motor 11a is hinged to the leg support bracket 2, and the drive block 11c is hinged to the end of the base 1 away from the leg support bracket 2. When the drive motor 11a is running, the drive motor 11a can be moved closer to or away from the drive block 11c under the transmission action of the screw rod 11b and the drive block 11c, thereby achieving the rotation of the leg support bracket 2.

[0038] 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 ultra-thin calf support assembly, comprising a base (1) fixedly mounted at the front end of the bottom of a car seat, and a leg support bracket (2) rotatably mounted on the base (1), a first extension plate (3) being slidably mounted on the leg support bracket (2), the first extension plate (3) being used to support the calf of the occupant, characterized in that: A connecting rod assembly (6) is provided between the first extension plate (3) and the leg support bracket (2), and the connecting rod assembly (6) moves to pull the first extension plate (3) to slide relative to the leg support bracket (2); The base (1) is provided with a transmission assembly, which includes a driving cross bar (5) and linkage plates (4) located at both ends of the driving cross bar (5). One end of the linkage plate (4) is hinged to the end of the driving cross bar (5), and the other end is hinged to the base (1). The middle part of the driving cross bar (5) is associated with the connecting rod assembly (6). When the leg support bracket (2) rotates forward relative to the base (1), the transmission assembly can force the connecting rod assembly (6) to move.

2. The ultra-thin calf support assembly according to claim 1, characterized in that: The connecting rod assembly (6) includes a first connecting rod (6a), a second connecting rod (6b) and a third connecting rod (6c) which are hinged in sequence, wherein the end of the first connecting rod (6a) away from the second connecting rod (6b) is hinged to the leg support bracket (2), the middle part of the second connecting rod (6b) is hinged to the driving cross rod (5), and the end of the third connecting rod (6c) away from the second connecting rod (6b) is hinged to the first extension plate (3).

3. The ultra-thin calf support assembly according to claim 2, characterized in that: A fourth link (6d) is provided between the first link (6a) and the third link (6c), and both ends of the fourth link (6d) are hinged to the first link (6a) and the third link (6c) respectively. The fourth link (6d) is arranged in parallel with the second link (6b).

4. The ultra-thin calf support assembly according to claim 1, characterized in that: The base (1) has two groups of mounting vertical plates (1a), the driving cross bar (5) is horizontally placed at the front ends of the two groups of mounting vertical plates (1a), the two ends of the driving cross bar (5) are provided with hanging ears (5a) bent to one side, one end of the linkage piece (4) is hinged to the hanging ear (5a), and the other end is hinged to the front end of the mounting vertical plate (1a); When the leg support is in a folded state, the driving cross bar (5) and the linkage plate (4) can be folded into a space enclosed by the two sets of mounting vertical plates (1a).

5. The ultra-thin calf support assembly according to claim 1 is characterized in that: The leg support bracket (2) is provided with a first slide rail (7) on both sides, the first extension plate (3) is slidably mounted on the first slide rail (7), the first extension plate (3) is provided with a second slide rail (8) on both sides, and the second extension plate (9) is slidably arranged on the second slide rail (8).

6. The ultra-thin calf support assembly according to claim 5, characterized in that: A telescopic drive mechanism (10) is provided at the bottom of the first extension plate (3), and the telescopic drive mechanism (10) is used to drive the second extension plate (9) to slide along the second slide rail (8).

7. The ultra-thin calf support assembly according to claim 1, characterized in that: A rotation drive mechanism (11) is provided between the base (1) and the leg support bracket (2), and the rotation drive mechanism (11) is used to drive the leg support bracket (2) to rotate relative to the base (1).

8. The ultra-thin calf support assembly according to claim 7, characterized in that: The rotary drive mechanism (11) comprises a drive motor (11a), a screw rod (11b) connected to the output end of the drive motor (11a), and a drive block (11c) threadedly mounted on the screw rod (11b); the drive motor (11a) is hinged to the leg support bracket (2); and the drive block (11c) is hinged to one end of the base (1) away from the leg support bracket (2).

9. The ultra-thin calf support assembly according to claim 1, characterized in that: The leg support bracket (2) is hinged to the base (1) via a first support shaft (12), and the linkage plate (4) is hinged to the base (1) via a second support shaft (13), wherein the second support shaft (13) is eccentrically arranged relative to the first support shaft (12).

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