Seat leg support extension driving mechanism

A technology of drive mechanism and extension mechanism, applied in vehicle seats, special positions of vehicles, vehicle components, etc., can solve problems such as affecting extension speed and poor stability, and achieve the effects of optimized structure, smooth operation throughout the entire stroke, and cost reduction.

Pending Publication Date: 2022-07-22
YANFENG ADIENT SEATING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 3. The driving force is located at the rear of the leg rest. The longer the extension length, the greater the load on the motor, which will affect the extension speed
[0008] 4. The driving force is placed at the rear, and the stability of the whole stroke is relatively poor

Method used

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  • Seat leg support extension driving mechanism
  • Seat leg support extension driving mechanism
  • Seat leg support extension driving mechanism

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Embodiment Construction

[0059] In order to make it easy to understand the technical means, creative features, achieved goals and effects of the present invention, the present invention is further described below.

[0060] see Figure 1 to Figure 20 The shown seat leg rest extension driving mechanism includes a leg rest mechanism 200 , a turning mechanism 100 , and an extension mechanism 300 . The turning mechanism 100 connects the leg rest mechanism 200 to the seat frame (not shown in the figure), and the extension mechanism 300 is slidably arranged on the leg rest mechanism 200 and drives the leg rest mechanism 200 to reciprocate.

[0061] The turning mechanism 100 includes a connecting member connected to a seat frame (not shown in the figure), a turning member and a turning driving mechanism.

[0062] The connecting member includes a pair of connecting frames 110a, 110b fixed on the left and right sides of the seat frame (not shown).

[0063] The inversion member includes a pair of connecting ro...

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Abstract

The invention discloses a seat leg support extension driving mechanism which comprises a leg support mechanism arranged on a seat framework, and the leg support mechanism is driven by an extension mechanism to reciprocate. The extension mechanism at least comprises a first rhombus extension part, a second rhombus extension part and an extension driving mechanism, the two ends of the first rhombus extension part are hinged to the leg supporting mechanism and the second rhombus extension part respectively, the second rhombus extension part is hinged to the seat framework, and the fixed end of the extension driving mechanism is connected with the seat framework; the driving end of the extension driving mechanism is hinged to the hinged position of the first rhombic extension component and the second rhombic extension component. Extension driving force is optimized to be parallel to the movement direction of the leg support mechanism, namely longitudinal arrangement, a double-screw lead screw is not needed any more, only a one-way threaded lead screw is needed, and therefore the structure is optimized, and cost is reduced. Meanwhile, the driving force of the extension mechanism is located in the middle of the extension mechanism and is close to the leg support mechanism, so that the leg support mechanism runs stably in the whole stroke.

Description

technical field [0001] The invention relates to the technical field of seats, in particular to an extension driving mechanism for seat leg rests. Background technique [0002] In order to meet the requirements of riding comfort, when the passenger is in the riding posture in the car, the position of the heel point determines that the height of the seat cushion should not be too high, and it should be close to the length of the calf, and the support length of the leg rest is close to the height of the seat cushion. For passengers over 50th, the leg support can only support the thigh when it is lifted, and the calf has no support, so the comfort is insufficient. [0003] At present, the extension leg rests on the market are generally in the direct push mode of the screw rod. The arrangement of the stroke end needs to provide a large space to realize the function of the whole set of mechanisms. The combination of the long screw rod and the slide rail affects the stability and s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60N2/90
CPCB60N2/995
Inventor 龙勇黄亚伟徐杰宋海红陈纪萍
Owner YANFENG ADIENT SEATING CO LTD
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