Seat leg support six-direction adjusting mechanism with width extension

Abstract

The utility model provides a seat leg support six-direction adjusting mechanism with width extension. The seat leg support six-direction adjusting mechanism comprises a motor, a leg support extension plate, a leg support supporting plate and a leg support width extension mechanism, the leg support width extension mechanism comprises a first connecting rod, a second connecting rod, a third connecting rod and a fourth connecting rod which are hinged to form a rhombus through first fasteners, the first connecting rod and the second connecting rod are fixedly connected to the leg support extension plate, and the third connecting rod and the fourth connecting rod are fixedly connected to the leg support supporting plate; the left end of the third connecting rod and the right end of the fourth connecting rod are respectively connected with a width extension plate; the motor drives the leg support to rotate so that the leg support can stretch out and draw back, the leg support width extending mechanism widens the leg support while the leg support extends to the maximum extent, and the comfort of the seat is improved. Six-direction adjustment of the leg support is achieved through a single motor, the noise decibel value in the use process of the leg support is reduced, the control logic of a seat control module can be simplified, the power of a leg support rotating motor is improved, and cost is saved. The leg support is arranged between the leg support extension plate and the leg support supporting plate, and the space occupation range is small.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle seats or home seats, in particular to a six-direction adjustment mechanism for a seat leg support with width extension. Background Art

[0002] Nowadays, as people's requirements for seat comfort and sense of space continue to increase, many vehicle seats or home seats are provided with leg support mechanisms to assist in increasing the leg support area to improve riding comfort. By supporting the human calf, the feeling of the calf being suspended in the air is reduced, thereby reducing leg discomfort caused by long-term driving and improving riding comfort.

[0003] Application No. 202310906077.4 proposes a mechanism for controlling the rotation and extension of a leg rest with a single motor of a seat, including a motor fixing bracket, a rotating arm plate, a rotating connecting rod group, a rotating body, a telescopic connecting rod group and a telescopic body. The rotating connecting rod group and the telescopic connecting rod group are both designed to be symmetrical on the left and right, with four each. A driving motor is installed in front of the motor fixing bracket, and the driving motor drives the screw of the screw nut mechanism to rotate. One end of the rotating arm plate is hinged on the nut of the screw nut mechanism. The driving motor drives the rotating body to rotate through the rotating connecting rod group. The rotating connecting rod three is fixedly connected to the telescopic connecting rod one. The telescopic body is connected to the rotating body through a sliding assembly, and the rotating connecting rod group drives the telescopic body to slide parallel to the rotating body through the telescopic connecting rod group to achieve extension and retraction. The rotating connecting rod group and the telescopic connecting rod group are used to synchronously drive the leg rest to extend and retract when the leg rest rotates to achieve compound motion, thereby achieving the maximum extension of the leg rest. This patent can only realize the functions of leg rest rotation and leg rest length extension, and cannot extend in the width direction. Utility Model Content

[0004] The utility model aims to provide a six-way adjustment mechanism for a seat leg rest with width extension, which can drive the leg rest to extend and simultaneously link the widening function through a motor, has lower cost and better seat comfort.

[0005] To this end, the technical solution adopted by the utility model is: a six-way adjustment mechanism of a seat leg rest with width extension, comprising a motor and a leg rest extension plate controlled to extend and retract by the motor, a leg rest support plate is arranged below the leg rest extension plate, and a leg rest width extension mechanism is arranged between the leg rest extension plate and the leg rest support plate;

[0006] The leg rest width extension mechanism includes a first link, a second link, a third link, and a fourth link. The first link and the second link, and the third link and the fourth link are respectively hinged by a first fastener. The hinge points of the first link, the second link and the first fastener are fixedly connected to the leg rest extension plate by the first fastener. The hinge points of the third link, the fourth link and the first fastener are fixedly connected to the leg rest support plate by the first fastener. The first link and the third link, and the second link and the fourth link are respectively hinged by the first fastener. A left-right symmetrical quadrilateral structure is formed between the first link, the second link, the third link, and the fourth link. The left end of the third link and the right end of the fourth link are respectively extended and connected with width extension plates, and the width extension plates slide left and right on the leg rest support plate through a guide groove structure.

[0007] As a preferred embodiment of the above scheme, guide groove structures are respectively provided on the left and right sides of the leg rest support plate, and the guide groove structure includes a width extension guide groove fixing block arranged on the leg rest support plate, and a width extension guide rail is slidably connected in the width extension guide groove fixing block, and a guide groove for sliding of the width extension guide rail is provided in the width extension guide groove fixing block, and the left and right width extension guide rails are respectively hinged to the third connecting rod and the fourth connecting rod through the second fastener.

[0008] Further preferably, the number of the width extension guide rails on each side is three arranged at intervals in the front and rear, and the width extension guide rail in the middle position is connected to the third connecting rod and the fourth connecting rod respectively.

[0009] Further preferably, each width extension guide rail is fixed to the width extension plate via a fixing member.

[0010] More preferably, shielding members are respectively provided on the front and rear sides of the width extension plate.

[0011] Further preferably, face cover fixings are provided on both left and right sides of the leg support extension plate.

[0012] Further preferably, the motor is also used to control the rotation of the seat leg rest, so that the same motor drives the seat leg rest to adjust in six directions, including rotation, extension and widening.

[0013] More preferably, the bilaterally symmetrical quadrilateral structure is a rhombus.

[0014] Beneficial effects of the utility model:

[0015] 1) While the motor drives the leg rest to extend and retract, the width of the leg rest is widened by the leg rest width extension mechanism, greatly improving the seat comfort;

[0016] 2) The leg rest width extension mechanism can realize six-way adjustment of the leg rest. The same motor can be used to drive the six-way adjustment of the seat leg rest for rotation, extension and widening. The extension and widening can share one motor while the rotation is set with a separate motor. This can reduce the noise decibel value during the use of the leg rest and simplify the control logic of the seat control module, increase the power of the leg rest rotation motor, and save costs.

[0017] 3) The existing telescopic body structure is utilized to arrange the leg rest width extension mechanism between the leg rest extension plate and the leg rest support plate, which has a simple structure and occupies a small space. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the open position of the leg support width extension mechanism of the utility model.

[0019] Figure 2 It is a schematic diagram of the stowed position of the leg support width extension mechanism of the utility model.

[0020] Figure 3 The utility model is a state in which the leg rest width extension mechanism is removed from the leg rest extension plate.

[0021] Figure 4 It is a design principle diagram of the initial position of the leg support width extension mechanism of the utility model.

[0022] Figure 5 It is a design principle diagram of the open position of the leg support width extension mechanism of the utility model. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0024] like Figure 1-5 As shown, a six-way adjustment mechanism of a seat leg rest with width extension includes a motor and a leg rest extension plate 1. The motor can control both the rotation and extension of the seat leg rest. This part of the structure is consistent with the mechanism of a seat single motor controlling the rotation and extension of the leg rest disclosed in application number 202310906077.4, and will not be repeated here. The difference is that the seat leg rest width extension function is added to this structure. The specific structure is as follows:

[0025] The leg rest extension plate 1 is controlled to extend and retract by a motor, and a leg rest support plate 2 is arranged below the leg rest extension plate 1. The leg rest extension plate 1 and the leg rest support plate 2 together constitute a telescopic body in a mechanism for controlling the rotation and extension of a leg rest by a single motor of a seat. A leg rest width extension mechanism A is arranged between the leg rest extension plate 1 and the leg rest support plate 2.

[0026] The leg support width extension mechanism A includes a first link 3, a second link 4, a third link 5, and a fourth link 6. The first link 3 and the second link 4, and the third link 5 and the fourth link 6 are respectively hinged by a first fastener 7. The hinge points of the first link 3, the second link 4 and the first fastener 7 are fixedly connected to the leg support extension plate 1 through the first fastener 7. The hinge points of the third link 5, the fourth link 6 and the first fastener 7 are fixedly connected to the leg support support plate 2 through the first fastener 7. The first link 3 and the third link 5, and the second link 4 and the fourth link 6 are respectively hinged by the first fastener 7. A left-right symmetrical quadrilateral structure is formed between the first link 3, the second link 4, the third link 5, and the fourth link 6. The left-right symmetrical quadrilateral structure is a rhombus. The left end of the third link 5 and the right end of the fourth link 6 are respectively extended and connected with width extension plates 10, and the width extension plate 10 slides left and right on the leg support support plate 2 through a guide groove structure.

[0027] Guide groove structures are respectively provided on the left and right sides of the leg rest support plate 2, and the guide groove structure includes a width extension guide groove fixing block 9 arranged on the leg rest support plate 2, and a width extension guide rail 8 is slidably connected in the width extension guide groove fixing block 9, and a guide groove for sliding of the width extension guide rail 8 is provided in the width extension guide groove fixing block 9, and the left and right width extension guide rails 8 are respectively hinged to the third connecting rod 5 and the fourth connecting rod 6 through the second fastener 11.

[0028] The number of width extension rails 8 on each side is three, arranged in a front-to-back spacing, and the width extension rails 8 in the middle are respectively connected to the third connecting rod 5 and the fourth connecting rod 6. Each width extension rail 8 is fixed to the width extension plate 10 by a fixing member.

[0029] Shielding members 13 are respectively provided on the front and rear sides of the width extension plate 10 . The shielding members 13 are made of plastic. When the width extension plate 10 is extended to the left and right sides, the shielding members 13 can cover the exposed gap.

[0030] The left and right sides of the leg support extension plate 1 are both provided with face cover fixing parts 12, and the face cover fixing plate 12 is fixed on the leg support support plate 2 for installing the face cover elastic fabric.

[0031] The motor is also used to control the rotation of the seat leg rest, achieving six-way adjustment of the seat leg rest by the same motor driving rotation, extension and widening; it can also adopt the form of using one motor for extension and widening while a separate motor for rotation.

[0032] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A six-way adjustment mechanism for a seat leg rest with width extension, comprising a motor and a leg rest extension plate (1) controlled to extend and retract by the motor, a leg rest support plate (2) being arranged below the leg rest extension plate (1), characterized in that: A leg rest width extension mechanism (A) is provided between the leg rest extension plate (1) and the leg rest support plate (2); The leg support width extension mechanism (A) comprises a first connecting rod (3), a second connecting rod (4), a third connecting rod (5), and a fourth connecting rod (6); the first connecting rod (3) and the second connecting rod (4), and the third connecting rod (5) and the fourth connecting rod (6) are respectively hinged via a first fastener (7); the hinge points of the first connecting rod (3), the second connecting rod (4) and the first fastener (7) are fixedly connected to the leg support extension plate (1) via the first fastener (7); the hinge points of the third connecting rod (5), the fourth connecting rod (6) and the first fastener (7) are respectively hinged via the first fastener (7) is fixedly connected to the leg support plate (2); the first connecting rod (3) and the third connecting rod (5), and the second connecting rod (4) and the fourth connecting rod (6) are respectively hinged by a first fastener (7); a left-right symmetrical quadrilateral structure is formed between the first connecting rod (3), the second connecting rod (4), the third connecting rod (5), and the fourth connecting rod (6); the left end of the third connecting rod (5) and the right end of the fourth connecting rod (6) are respectively extended and connected to a width extension plate (10); the width extension plate (10) slides left and right on the leg support plate (2) through a guide groove structure.

2. A six-way adjustment mechanism for a seat leg support with width extension according to claim 1, characterized in that: The left and right sides of the leg support plate (2) are respectively provided with guide groove structures, and the guide groove structure includes a width extension guide groove fixing block (9) arranged on the leg support plate (2), and a width extension guide rail (8) is slidably connected in the width extension guide groove fixing block (9), and a guide groove for sliding the width extension guide rail (8) is arranged in the width extension guide groove fixing block (9), and the left and right width extension guide rails (8) are respectively hinged to the third connecting rod (5) and the fourth connecting rod (6) through the second fastener (11).

3. The six-way adjustment mechanism of a seat leg support with width extension according to claim 2, characterized in that: The number of the width extension guide rails (8) on each side is three and is arranged in a front-to-back spacing manner, and the width extension guide rails (8) in the middle are respectively connected to the third connecting rod (5) and the fourth connecting rod (6).

4. A six-way adjustment mechanism for a seat leg support with width extension according to claim 3, characterized in that: Each width extension guide rail (8) is fixed to the width extension plate (10) via a fixing member.

5. The six-way adjustment mechanism of a seat leg support with width extension according to claim 1, characterized in that: Shielding members (13) are respectively provided on the front and rear sides of the width extension plate (10).

6. The six-way adjustment mechanism of a seat leg support with width extension according to claim 1, characterized in that: The left and right sides of the leg support extension plate (1) are both provided with face cover fixing parts (12).

7. The six-way adjustment mechanism of a seat leg support with width extension according to claim 1, characterized in that: The motor is also used to control the rotation of the seat leg rest, so that the same motor drives the seat leg rest to be adjusted in six directions, including rotation, extension and widening.

8. The six-way adjustment mechanism of a seat leg support with width extension according to claim 1, characterized in that: The bilaterally symmetrical quadrilateral structure is a rhombus.

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