DE3313255A1 - Height-adjustable foot for furniture - Google Patents

Abstract

For unlocking an actuating member and an associated securing part, a foot of this type has a swivel arm connected to the actuating member. Said swivel arm is connected at its other end to a tread piece such that, when the tread piece is pressed down, the swivel arm is swivelled in such a way that the actuating member moves into its position of release, in which the foot can be adjusted in height. The tread piece has an arresting member which has a catch opening, to which an edge portion of a through-opening of a cross piece receiving the swivel arm is assigned as counter catch member. The swivel arm can be locked in its swivelled position relative to the cross piece when the tread piece is swivelled slightly, the catch member moving with the edge of the opening into the catch position. As a result, the foot can easily and quickly be adjusted in height without the tread piece having to be pressed down in this case.

Description

Patent attorney

DipWng. W. Jackiscn
Menzel.tr. 40.7000 Stuttgart 1 _ y ,

Robert Krause GmbH & Co. KG A 37 624 / bri Weilheim-Teck branch

Tobelwasen 5 4 ο Anrjj

7315 Weilheim an der Teck ^{l Cm v}

Height-adjustable foot for furniture

Addition to patent ... (patent application P 32 39 357.1)

The invention relates to a height-adjustable foot for furniture according to the preamble of claim 1.

In the case of the foot according to the main patent, the actuating member is activated by depressing the tread and at the same time Pivoting of the two-armed swivel arm is moved into its release position, the securing part being disengaged comes with the holding part. To do this, the operator must press the step with his foot until the inner tube has been moved to the correct position to set the desired height of the foot. So that the Furniture foot can then be locked at the set height, the operator has to take his foot off the step again take away so that the actuating member can be brought into the locking position with the locking member.

The invention is based on the object of developing the foot according to the main patent so that the actuator can be held in its release position without assistance during the height adjustment.

This object is achieved according to the invention with the characterizing features of claim 1.

■■ .- 5 -

As a result of the training according to the invention, the tread must be pressed only briefly, namely to move the actuator into its release position. The actuator can then be in this position by locking the Swivel arm are held. The foot can thereby be extremely simply and without the aid of the operator's foot adjust. If the foot has to be adjusted in height at short intervals, must as a result of the training according to the invention the foot cannot be locked or released every time. This allows these frequent adjustments quickly and can easily be made. If the lock is to be released again, the swivel arm is unlocked so that it is in his The starting position is pivoted back and the actuating member is brought into the locking position with the securing member.

Further features of the invention emerge from the further Claims, the description and the drawings. The invention is illustrated below with reference to one in the drawings Embodiment described in more detail. It shows:

1 shows a part of a foot according to the invention in longitudinal section with a swivel arm in its starting position, in which the foot via an actuator is locked in its height,

Fig. 2 shows the foot of FIG. 1 in longitudinal section with the in its pivoted position locked swivel arm.

The foot according to FIGS. T and 2 is designed in the same way as the foot according to FIGS. 1 to 4 or 5 according to the main patent except for the locking of a swivel arm 96 ′ lying in a cross member 14 *. The foot thus essentially consists from an outer tube 5 ¹ , in which a (not shown) central and in this a (not shown) inner

tube are slidably guided. There is an im in the inner tube Cross-section of a U-shaped insert piece (not shown), the legs of which have a vertically extending toothing and which serves as a holding part for a securing part (not shown). The fuse part is through two Toothed disks formed, the teeth of which in the locking position of the foot with the teeth of the holding part in engagement stand. The toothed disks are in the locking position with an upper end of a rod designed as a rod spring-loaded actuator 66 'connected, which is in a guide tube 68 *.

The guide tube rests with its lower end 69 ' a plate 13 '. The upper end of a protrudes into the end 69 ' Actuating pin 89 ', the lower end of which protrudes into the cross member 14' of the foot resting on the floor. The lower The end of the pin is in a threaded hole 93 'of a roller 94' screwed, which is rotatably attached between parallel rails 95 'of the pivot arm 96'.

At the other end 110 of the pivot arm 96 ', a further roller 97' is rotatably arranged, which has a bore for receiving a pin 101. This protrudes upward from the cross member 14 * and carries a step piece 111 which is covered at the top by a rubber-elastic hood 102 ¹ . The step piece 111 has a mushroom-shaped head 112 with which it rests on the inside 113 of the hood 102 'in the starting position of the swivel arm (FIG. 1). A cylindrical shaft 114 of the step piece 111 extends vertically downward from the head 112, into which the upper end 115 of the pin 101 protrudes in a form-fitting manner.

The pivot arm 96 'is approximately half the length between the Legs of one attached to the bottom of the cross member 14 '

U-shaped piece 103 ¹ pivotally mounted.

The shaft 114 of the step 111 lies with its lower Shank end in a sleeve 116, which is used as a locking member for the pivot arm is used in its downwardly pivoted position (FIG. 2), in which the actuating member 66 'and the toothed washers take their release position.

The lower end of the sleeve 116 rests on the roller 97, while its upper end rests upwards through a passage opening 117 of the cross member 14 'protrudes (Figs. 1 and 2). The sleeve 116 surrounds the shaft 114 of the step piece 111 with a press fit, so that it moves with it to the same extent during its upward and downward movement. For locking of the pivot arm 96 'on the cross member 14' has the sleeve a latching opening 118 running transversely to its longitudinal direction (FIG. 1) into which the pivot arm is in the latching position 96 ″ (FIG. 2) an associated edge section 119 of the passage opening 117 of the cross member 14 "protrudes.

To prevent the swivel arm 96 * from swiveling back from its locked position to the starting position; ment hits with its free end 110 on the upper side 120 of the cross member 14 ", is a between these parts Buffer 121 arranged. This preferably consists of foam rubber and surrounds the sleeve 116. In the locked position of the pivot arm 96 ', the buffer 121 is relaxed and lies with its lower edge on the swivel arm 96 'and with its upper edge on the opposite one Inside of the top 120 of the cross member 14 'on (Figure 2).

In order to be able to adjust the height of the foot, you must first

the pivot arm 96 'can be pivoted in the direction of the arrow P in FIG. 1 from its starting position according to FIG. 1 in the direction of the arrow P about its axis 105 ^1. To do this, the operator has to step on the hood 102 * with his foot, the step piece resting with his head 112 on the hood 102 'with the pin 101 and the locking sleeve 116 being pushed down through the opening 117 of the cross member 14', with these parts maintain their vertical position to the cross member 14 '. In the release position of the actuating member 66 ', in which the swivel arm rests with its free end 110 on the bottom of the cross member 14 ″ (FIG. 2), the swivel arm can be locked with the aid of the locking sleeve 116 relative to the cross member 14 * simply pivot the step piece 111 with your foot slightly in the direction of arrow P *, the locking opening 118 of the sleeve 116 being pushed over the associated edge section 119 of the passage opening 117 of the cross member 14 ' Opening edge 119, so that the swivel arm 96 * can only be locked by the slight lateral swiveling of the step piece. The foot can then be removed from the step piece 111 so that the operator can only concentrate on adjusting the height of the inner tube, which is the handling much easier.

As soon as the inner tube has been adjusted to the desired height, the foot can be returned to its locking position just as easily. For this purpose, the operator only has to bump the step 111 laterally with his foot, so that it is ^{pivoted against the direction of arrow P 1} into its vertical position. Then the operator can

Take your foot off the step because the swivel arm is automatically pivoted into its starting position under the spring-loaded actuating member in the locked position. Here, the pivot arm 96 'pivots in the opposite direction of the Arrow P with its free end 110 upwards, the Buffer 121 is elastically compressed.

When the step 111 is pivoted, the roller 97 'protrudes of the swivel arm 96 'in its associated bottom opening 122, so that the step piece moves smoothly with the least amount of friction can be adjusted.

- blank page -

Claims (9)

Patent attorney Dipl.-Ing. W. Jackisch Menzelttr. 40.7000 Stuttgart 1 Robert Krause GmbH & Co. KG A 37 624 / bri branch Weilheim-Teck Tobelwasen 5 j *) | \ nril i0 Weilheim an der Teck f 'Claims: 1.) Height-adjustable foot for furniture, in particular tables, chairs, side trolleys od and is movable with an actuating member which is connected at its upper end with tensile strength to the securing part and at its lower end to a swivel arm which is accommodated in a cross member of the foot and at its end facing away from the hinge point on the actuating member has a stepping piece according to the patent ... (patent application P 32 39 357.1), characterized in that the swivel arm (96 ') can be locked ^{at least in the release position of the actuating member (66 1).} 2, foot according to claim 1, characterized in that that the swivel arm (96 ¹ ) is snap-connected to the cross member (14 '). 3. Foot according to claim 1 or 2, characterized in that the pivot arm (96 ¹ ) has a pivotably arranged latching member (116). 4. foot, in which the swivel arm is connected to the step piece via a pivotably arranged pin which protrudes through a passage opening on the top of the cross member, according to claim 3, characterized in that the latching member (116) has a latching opening (118), preferably has a transverse slot for receiving an edge section (119) of the passage opening (117) of the cross member (14 ¹ ). 5. Foot according to claim 4 or 5, characterized in that the latching member (116) surrounding a step piece (111) Sleeve is. 6. foot according to claim 5, characterized in that the Latching member (116) sits with a press fit on a shaft (.114) of the step piece (111) which receives the pin. 7. Foot according to one of claims 1 to 6, characterized in that between which the locking member (116) having Swivel arm end (110) and the opposite top side (120) of the cross member (14 ') an elastic Buffer (121) lies. 8. Foot according to claim 7, characterized in that the buffer (121) surrounds the latching member (116). 9. Foot according to claim 7 or 8, characterized in that the buffer (121) rests in the release position of the actuating member (66 ') on the cross member (14 ¹ ) and on the associated pivot arm end (110). -ΒΙΟ. Foot according to one of Claims 1 to 9, characterized in that that the latching member (116) is pivotally attached to ^{the pivot arm (96 1).}