FI79453C - Chair with armrests - Google Patents

Description

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The present invention relates to a chair with an adjustable armrest according to the preamble of claim 1.

In one known such chair (EP patent publication 5556), the armrest point is pivotally articulated to the upper end of the armrest support. The armrest can be attached to any tilt position relative to the armrest bracket by means of a grip connection. The armrest bracket is attached at its lower end to a sliding guide which is formed in such a way that it allows not only the armrest bracket to be moved in the longitudinal direction but also to be tilted about its vertical axis. In this case, the armrest support can be attached to any tilting position by means of a grip connection.

In the known chair, the adjustment possibilities of the armrest are unlimited. This only makes sense at first glance. In reality, however, the number of choices is too much for almost all chair users. The large number of adjustment options increases the risk of error adjustment that may occur unnoticed. The adjustment may also be incorrect when it is initially felt to be comfortable by the user, but which results in a seating error which can lead to back pain or the like and which the user is unable to find the cause of an objectively incorrectly adjusted armrest.

Height-adjustable armrests provided with a sliding guide are known from U.S. Pat. No. 3,434,756. In this known armrest, the sliding guide is at an angle of 90 ° to the armrest position. As a result, the distance of the armrest from the front edge of the seat cannot be adjusted.

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The object of the invention is to form a seat with height-adjustable armrests from the prior art mentioned in the introduction, so that the number of adjustment possibilities is reduced and the distance of the armrest from the front edge of the seat changes simultaneously with the height adjustment.

This object is solved by the features set forth in the characterizing part of claim 1.

The invention provides a forced connection between the armrest adjustment and the distance of the armrest from the front edge of the seat. Such a forced connection prevents the error adjustment that is possible with unlimited, independent adjustment possibilities.

In a preferred embodiment, in which a fastening mechanism is arranged between the armrest support and the armrest for locking the armrest at different height positions, the fastening mechanism is formed as a latch mechanism. Other preferred embodiments of the invention are set out in the other subclaims.

In the drawings:

Figure 1 schematically shows a side view of the chair with the armrest in the front position.

Fig. 2 shows a side view according to Fig. 1, with the armrest in the rearwardly moved position.

Figure 3 shows a schematic section of the armrest with its adjustment mechanisms.

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Figure 4 shows the view opening in the armrest for the selected height.

Fig. 5 shows a second embodiment of the armrest in a representation corresponding to Fig. 3.

Fig. 6 shows a section taken along the plane VI-VI in Fig. 5.

The chair schematically shown in Figs.

The armrest bracket 1 is connected to the seat bracket or seat. The armrest support 1 extends inside the armrest 2 with a sliding guide 2a. The armrest area is denoted by reference numeral 3. The distance between the front edge of this armrest area 3 from the longitudinal center plane of the armrest support 1 is denoted by a and the distance from the longitudinal center plane 11 to the rear edge of the armrest area by letter b.

The longitudinal central plane 11 forms an angle with the armrest, respectively. / 3 and does not run perpendicular to the armrest area.

The armrest support 1 can be mounted either with a slope forward at an angle r3 (see Fig. 1) or backwards with a slope ^ (see Fig. 2). Depending on the respective installation quality, the distance of the front edge of the handle area 3 from the front edge of the seat is smaller (x in Fig. 1) or larger (y in Fig. 2).

The armrest 2 is height-adjustable. In the embodiment according to Figures 3 and 4, the lever 4 pivoting about the horizontal axis 4a 4 79453 engages the retaining recesses 9 made on the side of the armrest support 1. The compression spring 16 holds the lower end of the pivoting lever 4 in engagement. By means of the center 17, the lever 4 can be turned away from the grip with the retaining recesses, after which the armrest 2 can be set to a different height, corresponding to the seven degrees of height shown. Fig. 4 shows a viewing opening 18, which makes it possible to see at each position the height set, which is marked on the armrest support 1.

In the embodiment according to Figures 5 and 6, the same or similar parts are denoted by the same reference numerals.

They differ only from the reference numbers marked with a comma in the first embodiment.

The armrest support 1 'is slidably guided in the reading pieces 6'. The adapter part 7 is connected to the push button 5 by means of a pin 7a.

The fitting part 7 is under the influence of the printing spring 8. Arranged on the inside of the armrest support 1 'are overlapping, interconnected circular free holes 10, the side surfaces of which run conically in the axial direction. The adapter part 7 can go into these round free holes. In order to release the latch, the adapter part is brought out of the grip using the pushbutton and then the armrest 2 is moved back and forth and * is locked in said position by releasing the pushbutton 5.

Claims (7)

A chair having an armrest attached to an armrest support, the armrest being adjustable by a sliding guide having a non-vertical tilt angle with respect to height and distance from the front edge of the seat, and wherein the armrest is arranged at an angle other than 90 ° to the sliding guide, characterized in that (2a) is arranged inside the armrest (2), and that both the slider has an inclination angle f; V that also at an angle o (; / ¾ deviating from the value of 90 ° is a fixed, predetermined value. A chair according to claim 1, wherein a fastening mechanism for locking the armrest at different height positions is arranged between the armrest support and the armrest, characterized in that the fastening mechanism is formed as a latch mechanism. Chair according to Claim 2, characterized in that the spring-loaded latch member is designed to engage the latch recesses (9; 10) of the armrest support (1; 1 '), which are arranged one below the other in the longitudinal direction of the armrest support (1; 1'). Chair according to claim 3, characterized in that the latch recesses (9) are made laterally on the armrest support (1) and that the latch member is a lever (4) pivoting about a horizontal axis (4a), one end of which is located in one of the latch recesses (9). Chair according to Claim 3, characterized in that the latch recesses are interlocking circular free holes (10) made in the middle of the armrest d '), the side surfaces of which 6 79453 extend conically in the axial direction and that the latch member is formally adhering to each free hole (10) ), a fitting part (7) movable against the force of the spring in the axial direction (7b). 5 79453 Chair according to Claim 5, characterized in that a weight spring (8) is arranged on the larger front side of the fitting part (7) and a push button (5) on the smaller front side. 7 79453