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Apparatus and method for lumbar support with variable apex

A technology of lumbar support and equipment, applied in the direction of home appliances, applications, transportation and packaging, which can solve the problems of reducing durability and limiting the marketability of luxury vehicles

Inactive Publication Date: 2008-08-20
L & P PROPERTY MANAGEMENT CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the size of these units limits the incorporation of other devices such as air ductwork into the seats, the complexity of these units reduces their durability and their expense limits their marketability for luxury vehicles

Method used

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  • Apparatus and method for lumbar support with variable apex
  • Apparatus and method for lumbar support with variable apex
  • Apparatus and method for lumbar support with variable apex

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] figure 1 It is a back perspective view of the lumbar support of the present invention. The flexible arcuate pressure surface 10 has a top end 12 and a bottom end 14, both ends of which are mounted to slide on a pair of guide rails 16. In the alternative embodiment depicted, the guide rail 16 is a single wire generally manufactured in a U-shaped manner, which provides two lengths of the wire 16 that guide the arcuate pressure surface 10. The guide rail has a top end stop 20 and a bottom end stop 22 that prevent the arcuate pressure surface 10 from sliding out of the stop. The archable pressure surface is metal or plastic. It tends to stay flat. This inherent tendency is very weak, and it can be overcome by traction cables such as soft steel cables.

[0028] When the arcuate pressure surface 10 is flat, the distance between the two sliding ends 12 and 14 on it is substantially the same as the distance between the two end stops 20 and 22 of the guide rail. However, when the ...

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PUM

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Abstract

A lumbar support to be installed in a seat has an apex that varies vertically along a guide rail. The guide rail has an upper stop and a lower stop. A bowing element disposed on the guide rail travels in a substantially vertical plane. A first bowden cable draws an upper of the bowing element downward until a lower portion of the bowing element is in abutment with the lower stop such that a low convexity is formed in the bowing element as the bowden cable continues to draw the upper portion of said bowing element further towards the lower stop. A second bowden cable draws a lower portion of the bowing element upward until the upper portion of the bowing element is in abutment with the upper stop and such that a high convexity is formed in the bowing element as the bowing element continues to draw said lower portion of the bowing element further towards the upper stop.

Description

Technical field [0001] The method and device of the present invention are in the field of lumbar support with arcuate apexes, where the height of the apex is variable. Background technique [0002] It is known that the lumbar support with archable pressure surfaces is actuated by a traction cable. Generally, the flexible pressure surface is installed on the guide rail, while the soft steel cable sleeve is attached to one end of the pressure surface and the soft steel cable wire is attached to the other end of the pressure surface. The traction that draws the wire into the sleeve simultaneously draws both ends of the flexible surface to form an arc toward the seat occupant. These simple devices cannot raise or lower the apex of the bow created in a significant or controllable manner. [0003] The lumbar support with an arcuate pressure surface that can move the arcuate apex vertically is expensive, complicated and bulky. Generally, vertical movement (usually arcuate movement) is a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A47C7/46B60N2/02B60N2/66
CPCB60N2/0232B60N2/0228A47C7/465B60N2/66B60N2/666B60N2/6673B60N2/6671B60N2/02246B60N2/64
Inventor R·麦克米伦
Owner L & P PROPERTY MANAGEMENT CO