AT413473B - SELF FEED DEVICE - Google Patents

Description

2

AT 413 473 B

The invention relates to a self-retracting device for a furniture part which can be pulled out of a fixed furniture part via a pull-out guide, with a tilting slide arranged on one of these two furniture parts, which pivots along a displacement path between a basic position and an end position in which the tilting slide pivots about a tilting axis relative to its basic position is, against the force of a spring is displaceable, and arranged on the other of these two furniture parts, cooperating with the tilt slide carrier having a contact projection with a contact surface on which abuts the self-closing of the pull-out furniture part a contact surface of a Eingrifffortsatzes the tilt slide, wherein Malfunction assurance in the case of retraction of the pull-out furniture-io part in his tipping slide of the driver and / or the tilt slide located in its non-tilted basic position has a run-on slope and at least one the contact surfaces a normal function section for conditioning in a normal function position at normal function of self-closing and offset from the normal function portion Fehlfunkti- 'onsabschnitt to rest in a malfunction after retraction of the extendable furniture part 15 in its basic position befindendem tilting slide.

Self-closing devices for pull-out furniture parts, which ensure the fully retracted state when inserting the pull-out furniture part, have become known in different embodiments. For example, from AT 401 334 B, such a 20 self-closing device is known, wherein a displaceable against the force of a spring tilting slide is present. The tilting slide is formed by a in the withdrawal direction of the drawer against the force of a spring linearly displaceable carriage, on which a tilting segment is arranged tiltable about a pivot axis. From AT 393 948 B further a tilting slide is known, which is along a guideway against the force of a spring ver-25 pushed. The guideway has a straight section adjoining the untilted basic position of the tilting slide and a curved section adjoining the straight section, which causes the tilting slide to pivot around an imaginary tilting axis into its tilted end position. In this end position, the driver can extend out of a fork-like region of the tilting slide. In the tilted end position 30 of the tilt slide is locked against retraction along the guideway due to the force exerted by the spring self-locking.

It is also known to provide such Selbsteinzugvorrichtungen with insertion dampers to dampen the retraction movement. Hydraulic or pneumatic piston-cylinder units or hydraulic rotary dampers have been used for this purpose, for example, which are usually effective only in the retraction direction. For example, such insertion dampers are known from AT 005 527 U1 and AT 004 912 U1.

Also known are facilities for providing a so-called " malfunction assurance " for such self-closing devices. A malfunction occurs when the tilting slide is not in its tilted end position but in its non-tilted basic position when retracting the extendable furniture part (for example, by a manipulation of the user). Without a malfunction assurance, the driver would approach the tilting slide located in its untilted basic position without the engagement projection 45 of the tilting slide being able to engage the attachment projection of the driver and a complete retraction of the pull-out furniture part would no longer be possible. It would then be removed the pull-out furniture part of the pull-out and the tilting slide are manually placed in its tilted end position. Such conventional malfunctioning devices have, for example, separate elastically deformable tongues arranged on the tilting slide which the driver can pivot elastically during retraction and in this way comes into engagement with the tongue. When renewed pulling out of the drawer then takes the driver with the tilting slide in its pivoted end position. Disadvantages of these devices include, inter alia, 55 that the drawer at the first retraction when the tilt slide in its normal position. 3

AT 413 473 B is not fully retractable. Also, these devices are relatively complicated and there is a risk of breaking these elastic tongues. Devices of this type are known, for example, from EP 0 631 745 B1, DE 40 20 277 A1 and AT 401 716 B. If, on the other hand, an attempt is made to retract the driver into the same return stroke of the tilting slide as in the normal function, then there is the problem that this is not possible with a not completely exact assembly of the self-closing device on the furniture or that the extendable furniture part in the normal function not pulled into the fully retracted position. A device of the type mentioned is known from DE 43 29 374 C1. The tilting slide here has two saw teeth as engagement projections. In the event of a malfunction described a system projection of the drawer over a run-on slope of the first sawtooth engages with this. The mutual displacement of the parts by the run-on slope in this case takes place in the direction perpendicular to the tilting axis of the tilting slide. In the normal-15 function, the contact projection of the driver engages with the second sawtooth.

The object of the invention is to provide an improved self-closing device of the type mentioned. According to the invention, this is achieved by a self-closing device with the features of claim 1. 20

It is formed in this way a simple trained and reliable functioning self-closing device with malfunction protection. Advantageously, the tilting axis of the tilting slide in the assembled state of the self-closing device can in this case be vertical and the self-closing device can be designed in a flat design and be arranged below the bottom of the drawer. The lifting of the tilt slide relative to the driver or the driver relative to the tilt slide can be made possible by the already existing game of pull-out in the vertical direction. Instead or in addition, for example, the guide rail slidably overlapping the tilting be mounted only in the region of its two marginal ends and in its intervening area, which has the guideway for the tilt slide, be free, the guide rail has a certain elasticity.

Advantageously, the self-closing device according to the invention is still functional even if the self-closing device is mounted on the furniture, that the tilting slide is still spaced in its fully retracted state of the extendable furniture part by a portion of its displacement from its basic position. By such a Beabstan-tion is in the fully retracted state of the extendable furniture part still a residual distance of the self-closing available, being exerted on the pull-out furniture part a bias. Manufacturing and / or assembly tolerances can be taken up thereby. Nevertheless, the extendable furniture part can be completely inserted in the malfunctioning position of the tilting slide and the driver.

In a preferred embodiment of the invention further comprises the driver on a canopy, which limits a displacement of the located in the normal function position 45 engagement projection of the tilting slide against the contact projection of the driver in the direction of the tilting axis of the tilting slide and secures the engagement extension in the normal function position. An unintentional lead out of the engagement extension from the normal function position, canceling the desired bias of the pull-out furniture part in its fully inserted state is prevented. 50

Further advantages and details of the invention are explained below with reference to the accompanying drawings. In this show:

Fig. 1 is a perspective view of an embodiment of the invention, wherein the 55 (only partially shown) extendable furniture part on which the Selbsteinzugvorrichtung 5 5 4th

AT 413 473 B is mounted, in its fully inserted into the (in Figure 1 only partially schematically indicated) fixed furniture part is inserted state;

Fig. 2 is a representation corresponding to Figure 1, in the fully extended state of the extendable furniture part.

3 is a Einzugeinheit the Selbsteinzugvorrichtung in perspective view;

FIG. 4 shows the inlet unit of FIG. 3 in a view from below (viewing direction D of FIG. 5); FIG.

Fig. 5, the Einzugeinheit from the rear (viewing direction E of Fig. 4);

Fig. 6 is a section along the line A-A of Fig. 5; 10 15 20 25

Fig. 7 is a perspective view of the Einzugeinheit corresponding to Figure 3, but in the tilted end position of the tilting slide.

Figure 8 is a perspective view of the Einzugeinheit and engaging with the tilt slide driver, wherein the tilt slide is in the normal function position and is spaced by a portion of its displacement from its basic position.

Figure 9 is a view of the Einzugeinheit and the driver, wherein the tilting slide is in the same position as in Fig. 8.

Fig. 10 is a section along the line B-B of Fig. 9;

Figure 11 is a perspective view of the retracting unit and the driver, with which the tilting slide is engaged, wherein the tilting slide is in the malfunctioning position.

Fig. 12 is a view of the parts of Fig. 11, in the same position of the tilting slide;

Fig. 13 is a section along the line C-C of Fig. 12;

14 and FIG. 15 are partial schematic views of a modified embodiment of the invention, in section corresponding to FIGS. 10 and 13.

The figures have different scales.

An embodiment of the invention is shown in Figs. 1 to 13. The Selbsteinzugvorrichtung for the from a in Fig. 1 only partially shown fixed furniture part 1 over 30 a pull-out 3 extendable furniture part 2, which is also shown only partially, is formed in this embodiment of two mirror-inverted, attached to the pull-out furniture part 2 Einzugeinheiten 4, the interaction with a common driver 5, which is attached to the fixed furniture part 1. 35 One of the two Einzugeinheiten 4 could also be omitted (or in principle more Einzugeinheiten 4 may be used) and the one or more Einzugeinheiten 4 could also be attached to the fixed furniture part 1, wherein the driver 5 would then be mounted on the fixed furniture part 1. For each of the Einzugeinheiten 4 also a separate driver 5 could be present. 40

The pull-out furniture part 2 may be a drawer or a cabinet drawer, of which in Fig. 1, only a base frame is shown, wherein the vertical webs 6 serve to attach a panel. The fixed furniture part 1 may be, for example, a cabinet body, in Fig. 1, only two to be determined on a body cross braces are shown, thus forming 45 parts of the fixed furniture part 1. The pull-out guide 3 may be formed in a conventional manner and have two or more guide rails. In the illustrated embodiment, the pull-3 has a fixed to the fixed furniture part 1 fixed rail 7, a set on the extendable furniture part 2 pull-8 and a middle rail 9, which run on rollers 10 against each other. 50

One of the two Einzugeinheiten 4 (the further right in Fig. 1) is shown in Figs. 3 to 7 in detail. The Einzugeinheit 4 has a along a displacement path between a basic position (Fig. 3) and a contrast tilted end position (Fig. 7) against the force of the spring 11 slidable Kippschieber 12. The tilt slide 12 is slidably mounted in a guide rail 55, which a guide track 13 for the tilting slide 12 5

AT 413 473 B points. The guideway 13 has a subsequent to the basic position of the tilting slide 12 straight section and a subsequent to the straight section curved portion. In this bent portion of the tilting slide 12 is tilted or pivoted in the plane 14. The imaginary pivoting or tilting axis 29 (which moves with the tilting slide-5 about 12) is thus perpendicular to this plane 14. In the tilted end position shown in FIG. 7, the tilting slide 12 is self-locking against retraction by the spring 11 due to its pivot position in the guideway 13 locked. There is further a damping device 15 is provided, which is formed for example by a gas spring. This damping device 15 acts in this case only in the direction of returning the io tilting slide 12 from its end position to its normal position, but not vice versa. Such damping devices 15 are known in different configurations and a more detailed description of the damping device 15 is therefore not required at this point.

In the illustrated embodiment, the tilting slide 12 overlapping guide rail 20 15 is formed in two parts and has a rail base 17, with a rail upper part 16 is screwed, wherein the guide rail 13 is formed by a slot in the rail bottom 17, and two guide pins 18, 19 (Fig. 4) of the tilting slide 12 protrude into this slot.

Instead of the illustrated embodiment of the tilting slide 12, it would also be conceivable, for example, to design the tilting slide as a slide on which a tilting segment pivotable about a tilting axis is arranged, the slide being displaceably mounted along a straight guide track of a guide rail. The pivoting of the tilting slide at the end of the guideway and its locking in this position can be done in a conventional manner. 25

The Kippschieber 12 has a cooperating with the driver 5 Eingrifffortsatz 21. The Eingrifffortsatz 21 has a contact surface 22 which cooperates with self-closing on a contact surface 32a, 32b of a contact projection 31 of the driver 5 (Fig. 8). Furthermore, the tilting slide 12 has a start-up extension 24, which has a contact surface 25. 30, a groove 26 is formed between the Eingrifffortsatz 21 and the Anlauffortsatz 24.

Between the rail upper part 16 and the lower rail part 17, a slot 42 is formed. In the basic position of the tilting slide 12, both the Eingrifffortsatz 21 and the Anlauffortsatz 24 protrude from this slot, while in the wasted end position in the illustrated embodiment, the Eingrifffortsatz 21 is retracted into the slot 42 35 (FIG. 7).

When the pull-out furniture part 2 is retracted starting from its fully extended state (FIG. 2) with the tilting slide 12 in its tilted end position, the contact surface 25 of the starting extension 24 of the tilting slide 12 runs against the stop surface 34 on the end face 35 of the driver 5 at. The tilting slide 12 is thereby tilted and the self-locking is released and the spring 11 pulls the tilting slide 12 from its end position in the direction of its basic position. The pull-out furniture part 2 is thereby applied to the last part of its extension distance before reaching the fully retracted state of the tilting slide 12 and pulled in its fully retracted 45 state. Here, the Eingrifffortsatz 21 is located with its contact surface 22 on the contact surface of the abutment projection 31 of the driver 5, namely on a normal function portion 32a of the contact surface, as shown in FIGS. 8 to 10 can be seen.

In the fully retracted state of the pull-out furniture part 2, the tilting slide 12 is here advantageously also spaced by a distance s (FIG. 10) of its displacement path from its basic position. As a result, in the fully retracted state of the pull-out furniture part 2, a bias is exerted on this and there is still one of this distance s corresponding reserve for self-closing, so that manufacturing and assembly tolerances can be accommodated. The distance s is preferably 55 less than one fifth of the total displacement of the tilt slide 12. Preferred- 6

AT 413 473 B wise, the distance s is more than 1mm and less than 8mm.

When extending the pull-out furniture part 2 from the stationary furniture part 1, the tilt slide is taken from the driver 5, wherein the contact surface 22 of the Eingrifffortatzes 5 21 of the tilt slide on the normal function portion 32 a of the contact surface of Anlagevor jump 31 abuts until the tilting slide 12 has reached its tilted end position and the Eingrifffortsatz 21 is pivoted out of the range of action of the abutment projection 31 of the driver 5. io The above-described function of the self-closing device is called " normal function " designated and the system of the contact surface 22 of the Eingrifffortatzes 21 of the tilting slide 12 at the normal function portion 32a of the contact surface of the abutment projection 31 of the driver 5 is referred to as a normal function position of these two parts. In the event of a malfunction of the self-closing device, the tilting slide 12 is in its unlocked basic position when the pull-out furniture part 2 is inserted starting from its fully extended state. It then runs shortly before reaching the fully inserted state of the Eingrifffortatz 21 of the tilting slide 12 against the driver 5. In order to prevent a blocking of the pull-out furniture part 2 before reaching its fully inserted state 20, go from the facing end faces 27, 35 of the Eingrifffortatzes 21 of the tilting slide 12 and the abutment projection 31 of the driver 5 run-on slopes 23, 36 from. By this run-on slopes 23 and 36, 12 at the start of the tilt slide 12 engage on the driver, the Eingrifffortsatz 21 of the tilt slide 12 is displaced in the direction perpendicular to the retraction 30 25 of the extendable furniture part 2 and transferred over the abutment projection 31 of the driver 5 , This displacement of the tilting slide 12 relative to the driver 5 takes place in the direction of the (imaginary) tilting axis 29 about which the tilting or pivoting of the tilting slide 12 takes place. The chamfers 23, 36 thus extend between the respective end face 27, 35 and lying perpendicular to the tilting axis 29 of the tilting slide 12 deck surface 30 28 and 37 of the Einrifffortatzes 21 of the tilting slide 12 and the abutment projection 31 of

Driver 5.

Since the tilting axis 29 is vertical in the illustrated embodiment, the transfer of the Eingrifffortsatzes 21 of the tilting slide 12 via the abutment projection 31 of the driver 5 35 takes place in the vertical direction. In this case, there is a bending of the guide rails 20, which are elastically formed in this direction and which are fastened to the extendable furniture part 2 only in their end areas and are free in their central areas. For example, the rail upper part 16 and the lower rail part 17 may consist of a plastic elastically bendable to a sufficient extent. Also, instead of or in addition, an increase of the 40 extendable furniture part 2 can take place, wherein this increase can take place due to the play present in the pull-out guide 3.

Instead of the illustrated embodiment of the chamfers 23, 36 both on Eingrifffortsatz 21 and on the abutment projection 31, only one of these two parts may be provided with a run-on slope 45 to cause the described function.

Advantageously, the self-closing device is mounted such that - as shown - in the fully retracted state of the extendable furniture part 2 of the tilting slide 12 is spaced by a distance s of its displacement from its basic position. The abutment surface of the abutment protrusion 31 is formed with a malfunction section 32b in addition to the normal function section 32a. Here, the abutment surface of the abutment projection 31 is stepped, so that the malfunction section 32b is offset from the normal function section 32a via the step 38 by the offset v in the direction of the basic position of the tilting slide 12. The offset v here corresponds to the distance s or is slightly greater than 55 (preferably less than 2 mm). Seen in the direction of the tilting axis 29 are the

Claims (5)

7 AT 413 473 B normal function section 32a and the malfunction section 32b also offset. The step 38 between the two is in the illustrated embodiment approximately perpendicular to the tilting axis 29. 5 In view according to FIG. 12 seen (on the top surface 32, in which the run-on slope 36 opens), the malfunction section 32b and the normal function section 32a from top to bottom designed to spring back to counteract a lifting of the contact surface 22 of the Eingrifffortatzes 21. After transferring the Eingrifffortsatzes 21 via the abutment protrusion 31 by means of the chamfers 23, 36 passes in the case of malfunction, the contact surface 22 of the Eingrifffortatzes 21 to bear against the malfunction section 32b, wherein the Eingrifffortsatz 21 rests on the step 38. In this malfunction position of the Eingrifffortatzes 21 of the tilting slide 12 in the driver 5, although no bias in the closing direction acts on the pull-out furniture part 2, 15 but this can be moved to its fully retracted state. In the case of a renewed extension of the pull-out furniture part 2, the tilting slide 12 is again displaced by the driver 5 in its tilted end position, so that the following retraction of the pull-out furniture part 2 of the tilt slide 12 is pivoted by the contact surface 34 of the driver 5 for engagement in the driver 5 in that the contact surface 20 of the engagement projection 21 bears against the normal function section 32a of the abutment projection 31 of the carrier 5, the normal function position being assumed (FIGS. 8 to 10). The driver 5 further has a roofing web 39, which starts from an increase 40 of the driver 5. Thus, between the elevation 40 and the abutment projection 31, a groove 41 is formed, whose side wall forming the abutment surface is stepped. A subsequent to the increase 40 part of the groove 41 is covered by the roofing web 39. The canopy 39 limits a shift of the located in the normal function position Eingrifffortatzes 21 of the tilting slide against the contact projection of the driver 5 in the direction of the tilting axis 29 and thereby secures the Eingrifffortsatz 21 in the normal function position in which its contact surface 22 on the normal function portion 32a of the contact surface of the abutment 31 is present. An unwanted displacement of the Eingrifffortsatzes 21 from the normal function position in the malfunctioning position, for example, when the pull-out furniture part 2, a downward force is applied in the region of its front end, is prevented. Instead of forming the abutment surface of the abutment projection 31 with a normal function section 32a and a malfunction section 32b, the abutment abutment abutment surface could also be formed with a normal function section 22a and a malfunction section 22b, as shown diagrammatically in FIGS. 14 and 15. The Fig. 14 40 shows this normal function position of the tilting slide 12 and driver 5 and Fig. 15 shows the malfunctioning position of these two parts. In principle, it would also be conceivable and possible that both the contact surface of the Eingrifffortatzes 21 and the contact surface 32 of the abutment projection 31 are each formed with a normal function section and a malfunction section. 45 Different modifications of the embodiments shown and described are conceivable and possible, for example with regard to the attachment and orientation of the Einzugeinheit 4 and the driver 5. 50 claims: 1. Selbsteinzugvorrichtung for a from a fixed furniture part (1) via a pull-out (3) extendable furniture part (2), with a on one of these two furniture parts 55 (1, 2) arranged tilting slide (12) along a displacement path between a δ ΑΤ 413 473 Β basic position and an end position in which the tilting slide (12) relative to its basic position a tilting axis (29) is pivoted against the force of a spring (11) is displaceable, and one on the other of these two furniture parts (1,2) arranged with the tilting slide (12) cooperating driver (5), the investment projection 5 ( 31) with a contact surface (32, 32a, 32b), on which the self-closing of the pull-out furniture part (2 ) a contact surface (22; 22a, 22b) of a Eingrifffortsatzes (21) of the tilting slide (12) is applied to the malfunction in the case of retraction of the extendable furniture part (2) in his unverkippten basic position befindendem tilting slide (12) of the driver (5) and / or the tilt slide (12) has a start-up obliquity (23, 36) and at least one of the contact surfaces has a normal function section (32a, 22a) for engaging in a normal function position with normal function of self-closing and a malfunction section (32b, 32a, 22a) offset from the normal function section (32a, 22a) 22 b) for installation in a malfunctioning position after retraction of the extendable furniture part (2) in its basic position befindendem tilt-15 slide (12), characterized in that the contact surface (32) of the system projection (31) of the driver (5 ) and the normal function section (32a) and the opposite to the normal function section (32a) via a step (38) in the direction of the basic position of the tilting slide (12) and in the direction of the tilting axis (29) offset malfunction section (32b), and / or that the contact surface (22) of the 20 Eingrifffortatzes (21) of the tilting slide (12) is stepped and the Normalfunkti onsabschnitt (22 a) and over the normal function portion (22 a) via a step (38) towards the end position of the tilting slide (12) and in the direction of the tilting axis (29) offset malfunction section (22 b), wherein when retracting the extendable Furniture part (2) in its basic position befindendem tilting slide (12) 25 Eingrifffortatz (21) of the tilting slide (12) relative to the contact projection (31) of the contractor (5) by means of the run-on slope (s) (23, 36) in the direction the tilting axis (29) of the tilting slide (12) displaceable and over the abutment projection (31) of the driver (5) can be transferred and the Eingrifffortatz (21) and the abutment projection (31) in their Fehlfunktionsste Llung are engageable with each other. 30 2. Selbsteinzugvorrichtung according to claim 1, characterized in that extending the step (38) between the normal function portion (32a, 22a) and the malfunction portion (32b, 22b) perpendicular to the tilting axis (29). 3. Selbsteinzugvorrichtung according to claim 1 or claim 2, characterized in that the driver (5) has a canopy web (39) having a displacement of the located in the normal function position Eingrifffortatzes (21) of the tilting slide (12) relative to the investment projection (31). of the driver (5) in the direction perpendicular to the plane (14), in which the tilting of the tilting slide (12) takes place, limited and secures the grip grip (21) in the normal operating position. 4. Selbsteinzugvorrichtung according to one of claims 1 to 3, characterized in that the tilting axis (29) in the mounted state of the self-closing device is vertical. 45 5. Furniture with one of a stationary furniture part (1) via a pull-out (3) extendable furniture part (2) and a self-closing device according to one of claims 1 to 4, characterized in that the tilting slide (12) in the fully retracted state of the extendable Furniture part (2) is spaced by a portion (s) of its displacement from its basic position. 50 6. Furniture according to claim 5, characterized in that the partial distance (s) is less than one fifth of the total displacement. 7. Furniture according to claim 5 or 6, characterized in that the partial section (s) is less than 8mm. 8. Furniture according to one of claims 5 to 7, characterized in that the partial section is more than 1mm. 5 Including 8 sheets of drawings 10 15 20 25 30 35 40 45 50 55