Device for regulating the tension of a chair back, in particular for chairs

A seat back and tension technology, applied in the field of tensioning devices, can solve the problems of increasing production and maintenance costs, expensive manufacturing and assembly, and increasing the size of the device

Active Publication Date: 2011-04-20
L & P PROPERTY MANAGEMENT CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] However, this device has certain disadvantages: firstly, it consists of a large number of parts arranged in various ways in the seat and interconnected, which makes its manufacture and assembly expensive
[0026] This solution also has a number of disadvantages: most of all actuation of the device must be done with a push button, usually located near a knob attached under the seat; the push button is not easy to operate
[0034] Furthermore, the presence of the swivel arm (6) increases the size of the device, thereby increasing its size and weight, which is also structurally composed of a large number of parts, which increases the overall production and maintenance costs

Method used

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  • Device for regulating the tension of a chair back, in particular for chairs
  • Device for regulating the tension of a chair back, in particular for chairs
  • Device for regulating the tension of a chair back, in particular for chairs

Examples

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Embodiment Construction

[0055] In the following embodiments, each feature given for a specific example may be interchanged with other different features present in other embodiments.

[0056] Furthermore, it should be noted that all that is shown to be known during the patent grant process is understood to be unclaimed and is subject matter disclaimed from the claims.

[0057] With reference to the preceding figures, reference numeral ( 101 ) designates a device (not shown) for adjusting the tension of the backrest, notably for a chair, of the type comprising a box-like structure ( 102 ).

[0058] The box-like structure (102) is divided into an upper first shell (103), which includes a first support element (not shown) for the chair; and is divided into a lower second shell (104), which can be The rod (also not shown) of the gas spring is connected.

[0059] Both the first housing (103) and the second housing (104) are arranged in a rectangular configuration with a pair of first wings (105a, 105b) a...

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PUM

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Abstract

The subject of this application is a device to regulate the tension of a seat back, particularly for chairs, comprising a box-like structure to which are articulated a first support element for a chair and a second support element for a chair back. A knob (6), which can be grasped by the user, is rotatively connected to and protrudes from the first support element for a chair; this knob is connected to means for the selective setting of the position of an arm (17) capable of limiting, through a leaf-spring element (14), the travel of the second support element for a chair back. Finally, means are provided to selectively preload the leaf-spring element.

Description

technical field [0001] The present application relates to a device for adjusting the tension of a backrest, in particular for a chair. Background technique [0002] Today, devices are known which make it possible to predetermine the attainment of the desired angle between the chair and the backrest of the chair or small chair. [0003] We then know the patent DE 4.318.516A1, which shows a device for changing the mutual positioning between two movable parts of a chair, this device consists in engaging with a gear tooth (1) fixed to the body of the chair to lock it in Bolts (2) in each position. [0004] The device can be defined as bistable in the sense that it can define two different stable positions of the bolt. [0005] The movement of the bolt (2) is actually controlled by means housed in the container (4), the bolt (2) having fixed to it an arm (7) on which are fixed A pair of pins (8) and (9), a first spring (5) acts between the arm (7) and the container (4), while ...

Claims

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Application Information

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IPC IPC(8): A47C7/00A47C7/40A47C1/024
CPCA47C1/03255A47C1/03277A47C1/03266A47C1/03279
Inventor G·托萨托M·科斯塔格里亚
Owner L & P PROPERTY MANAGEMENT CO
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