EP3013187A1

EP3013187A1 - Retraction device, extension guide having a retraction device and furniture having an extension guide

Info

Publication number: EP3013187A1
Application number: EP14736697.5A
Authority: EP
Inventors: Tobias Erdel; Rolf Mintgen
Original assignee: Grass GmbH
Current assignee: Grass GmbH
Priority date: 2013-06-28
Filing date: 2014-06-27
Publication date: 2016-05-04
Also published as: US10028583B2; DE202013005797U1; WO2014207234A1; US20160135595A1

Abstract

The invention relates to a retraction device for drawers for retracting a movably seated drawer into the closed end position relative to a furniture carcase, the device comprising a catch (1) that can be detachably coupled to a driver (2) of the drawer and is mounted movably along a displacement section and further comprising a force accumulator that can be loaded by means of a displacement movement of the catch (1), wherein the catch (1) has a holding state at the end and the beginning of the displacement section and wherein the catch (1) is locked in the holding state at the end of the displacement section, holds the force of the force accumulator and allows a decoupling of the drawer. According to the invention, the catch is pivotably arranged and carries out a pivoting movement along the displacement section between the two holding states over more than 20% of the displacement section with a displacement movement of the catch.

Description

"Feeder, pull-out guide with one

Feeding device and furniture with a pull-out guide "

The invention relates to a collection device according to the

The preamble of claim 1 and a pull-out with a collection device and a piece of furniture with a

Pull-out guide.

State of the art

German Utility Model DE 20 2004 006 410 U1 discloses a draw-in mechanism for drawer pull-out guides with a housing to be fastened to a cabinet wall of a piece of furniture

Guide rail known. The pull-out guide has, for example, a middle rail which is displaceably mounted to the guide rail. The drawer is arranged on a drawer rail displaceably mounted to the center rail. On the guide rail or carcass rail is in a pawl housing by a spring arrangement with an elongated

Coil spring bistable provided in two spaced in drawer movement direction end positions movable pawl member. The latch component has a Pick-up for a driver intended on the other rail. The driver moves in a relative displacement of the rails when approaching a closed position in the recording and pivots the prestressed movable pawl member, whereby it is unlocked from the associated end position. This has the consequence that under the action of the spring tension, the pawl member is moved to the other end position and the associated rail with drawer is also moved to the end position via the carrier held in the receptacle, which represents the closed position of the drawer. In the pawl housing, a damping device is provided, in which a damper element is movably arranged, which by transmission elements with the pawl member in

Connection stands.

When you pull the drawer over the in the

Pawl member coupled driver moves the latch member in the extension direction, whereby the coil spring is tensioned until the latch member is locked in the end position of the driver left. The tensioning of the spring requires a considerable force when pulling out the drawer, which is applied by the user.

Purpose and advantages of the invention

The invention is based on the object

Feeding device of the type described in the introduction

to provide an improved in terms of the effort for charging an energy storage characteristic.

This object is solved by the features of claims 1, 9 and 10. In the dependent claims advantageous and expedient developments of the invention are given.

The invention relates to a collection device for drawers for drawing a movably mounted drawer in the closed end position relative to a furniture body with a Squeezing pawl, which is releasably coupled to a driver of the drawer and which is movably mounted along a displacement section and a force accumulator which is chargeable via a sliding movement of the sear, the squeezing a holding state at the end and at the beginning of

Having displacement portion and wherein the squeezing latch is locked in the holding state at the end of the displacement portion, holds the force of the energy storage and allows a decoupling of the drawer. The essence of the invention lies in the fact that the sear is pivotally mounted and along the displacement section between the two holding states via a path of more than 20% of the displacement section performs a pivotal movement at a displacement movement of the sear. The pivoting movement of the squeegee takes place

preferably along a guideway, wherein a

Sliding support point of the squeegee along the guideway slides. The pivoting movement is preferably further defined such that the support point by the pivoting movement of the squeegee ever closer to a line, along which an attacking force of the energy storage device runs on the sear. As a result, an ever increasing part of the force of the force accumulator can be transmitted from the support point of the sear to the guideway, whereby the force of a user expended decreases. Because this must then spend only the proportion of the force of the energy storage, which can not be derived from the support point on the guideway. In the end position, for example, the support point of the sear to the guideway at one point of the

Arrived guideway, at which the guideway so far inclined with respect to the attacking force and thus the sling pawl has pivoted so far that the

Sling without force acts in this position automatically.

Preferably, as viewed in the extension direction of the drawer, the guideway inclines from a horizontal orientation to an increasingly vertical orientation. Preferably, a tangent at the end of the guideway is vertical or nearly vertical, possibly even slightly above the vertical inclined so that the support point the curve

to a certain extent be able to intervene.

Due to the pivoting movement of the sear catch is indeed the

Auszugsweg extended at a given Federspannweg, but created by the pivoting movement on a guideway the possibility that the force of an operator on the drawer to load the energy accumulator, in particular a spring, albeit extending spring, if necessary, remains the same, for example at the end of the guideway

arrived, even decreases to the value zero, at which the squeegee then automatically holds on the track and preferably in this position, the driver from the

Sling unlocks.

The pivoting movement is preferably over more than 30, 40, 50, 60, 80, 90% of the displacement, optionally from the beginning. This gives the possibility of the power to

Charging the force accumulator, in particular a spring although the exciting spring on the sliding portion substantially equal. This succeeds increasingly, in which the pivoting movement is realized along an ever larger part of the displacement section.

In a preferred embodiment of the invention is the

Pivoting movement forcibly controlled via a guideway. Due to the positive guidance, which preferably extends inclined to the displacement of the sear, there is the possibility that the squeezing catch is always clearly supported on the guideway and thus absorbs forces of the energy accumulator. For example, the force of the force accumulator can act on a pivot axis of the sear. In the end position is preferably the attacking force of the energy storage, in particular the

Spring force of a tension spring, the pivot axis of the sear and the support point of the sear on the guideway arranged on a line preferably at the same time substantially vertically inclined guideway. This makes it possible that holds in this position, the sear automatically in removal of external forces automatically in this position and as Holding state at the end of the displacement section can be used while holding the force of the energy storage.

In an advantageous embodiment of the invention, the pivoting movement of the sear by attachment to a

Curve element specified. The curve element preferably predetermines the guideway.

In a preferred embodiment of the invention, the sear has a contact element which is supported on the guideway. Preferably, the contact element is supported on the

Curve element during a pivoting movement. This allows the cam element over the contact element forces acting on the

Attack the fuselage, absorb it, so that this force from the

User does not need to be deployed.

In order to be able to keep a constant connection with the driver when pivoting fishing pawl in the coupled state, it is further proposed that the fishing pawl a

Includes receiving area for the driver, in which the driver can move relative to the sling pawl in a pivoting movement of the sear when not decoupled driver.

An advantageous simple embodiment of the receiving area may be such that the receiving area a

has a slot-like recess. In this backdrop-like recess, the driver can move during a pivoting movement of the sear.

Advantageously, the receiving area, in particular the slot-like recess for the driver in such a way matched to the pivoting movement of the preferably positively driven sear that the driver is largely without

moves additional effort of forces in the receiving area when pivoting the Fangelements. Preferably, it is a curved backdrop.

In a further preferred embodiment of the invention, the receiving area is open on one side. By the one-sided Opening will allow the driver to move away from the

Fang can decouple, especially in an end position with charged energy storage.

drawings

Several embodiments of the invention are based on the figures below, indicating further advantages and

Details explained in more detail. Show it:

Figure 1 in a schematic side view

Curve element with a sear in a position in which a drawer is completely retracted, that is, at the beginning of a sliding portion of the sear,

Figure 2 shows the components of Figure 1 with a position of

Sling between the beginning of

Displacement section of Figure 1 and a holding state at the end of the displacement section,

Figure 3 shows a state of the components of Figure 1 with

a sling in a position in which a driver can decouple and

Figure 4 is a force-displacement diagram of a conventional

Feeding device and a feed device according to the invention with pivotable sear.

Description of the embodiments

In FIGS. 1 to 3, the components are catch 1,

Driver 2 and cam element 3 of a collection device with different positions of the sear 3 shown along a displacement.

The sear 1 has a pivot axis 4, a curved Gate 5 for receiving the driver 2 and a

Bearing element 6. The contact element 6 slides along a curved track 7 of the cam element 3 with itself on a displacement section of the shifting pawl 1 from an initial position according to FIG. 1 into an end position according to FIG.

A user finds the following conditions when moving the sear by, for example, moving a drawer (not shown) with regard to the forces that he has to expend:

At the driver 2 reaches over the drawer, which with the

Driver 2 is coupled to a force F _{B of} a user. On the other hand lies on the pivot axis 4 preferably on the drawer people moving force of an energy accumulator, for example a spring force according to the indicated in the figure 1 force F _F.

Normally, the pull-out force increases according to the

Spring force according to Hooke's law F _F = D - s, where D is the spring constant and s is the extraction path. Then one has to

Apply a pull-out force F _B , which corresponds to the spring force F _F.

The cam element 3 with it moving along it

However, contact element 6 of the sear 1 leads to others

Ratios for the user in terms of

Pull-out force F _B.

In FIG. 1, the user starts with a force B which essentially corresponds to the spring force F _F. In the extension direction, the distance of the driver, on which the force F _B acts on the pivot axis, has the value a.

On the way (in Figures 2 and 3 to the right) the abutment member 6 slides on the curved track 7, which inclines downward, whereby the sling pawl 1 in the clockwise direction

pivoted. The contact element 6 remains on the curved path 7 fixed in the system by the

Force relationships generated by the driver in the backdrop 5. The inclining curved path has the consequence that an increasing proportion of the restoring forces of a spring (not shown) on the abutment element 6 can be supported on the cam element 3, resulting in the user

decisive force F _{B is} not linearly increased as expected, but as shown in the force-displacement diagram of Figure 4 initially increases slightly, then even slightly falls and at the end, if the curved path is more pronounced, possibly to the vertical, drops sharply , possibly down to zero, but this is not shown in the force-displacement diagram. In the force-displacement diagram is a conventional collection device, such as those from the German

Utility Model DE 20 2004 006 410 Ul is known, shown as curve 8. According to Hooke's law, this curve is essentially a straight line. The force-displacement diagram for the intake device according to the invention is represented by the curve 9, which initially shows a linear increase in force, but then slightly decreases and finally reflects a strong declining force curve.

An end point symbolizes the situation in Figure 3. The sear 1 is pivoted so far that the driver 2 from the backdrop 5, which is open on one side, can extend, which has the consequence that the drawer from then on, then freely in Can move the extension direction. Preferably, the squirrel pawl 1 has arrived in such a position by the corresponding curve guide of the curved path that the sling pawl is holding itself there, ie the forces of the spring F _F fail to make it possible for the sear along the

to snap back curved track.

In this position of the notch, the driver 2 has a distance c from the pivot axis of the sear in

Extract direction considered.

Overall, the way 5 of the driver through the

Swinging movement up to the release position by one way approx extended. Such a way extension normally does not take place in a conventional collection device. For a pivoting of the sling there takes place only at the very end on a very short path portion of a displacement path of the sear to bring the sling in a locked position, and a driver

release. However, the longer displacement by pivoting the sear 1 allows the power reduction when pulling on the driver 2 for a user. This then finds the pull-out movement for a drawer more pleasant.

Application can find a collection device according to the invention, for example, in a retraction automatic, which is described in German Utility Model DE 20 2004 006 410 Ul. The features and details listed herein are hereby expressly incorporated by reference.

List of reference numbers:

1 catch

2 drivers

3 curve element

4 pivot axis

5 backdrop

6 contact element

7 curved track

8 curve

9 curve

Claims

Claims :

1. Feeding device for drawers for drawing a movably mounted drawer in the closed end position relative to a furniture body with a sear (1) which is releasably coupled to a driver (2) of the drawer and which is movably mounted along a displacement section and with a force storage which is chargeable by a sliding movement of the sling pawl (1), wherein the sear (1) has a holding state at the end and at the beginning of the sliding section and wherein the sling (1) is locked in the holding state at the end of the sliding section, the force of

Power storage holds and a decoupling of the drawer

admits, characterized in that the sling

is arranged pivotably and along the displacement section between the two holding states via a path of more than 20% of the displacement section performs a pivoting movement in a sliding movement of the sear.

2. Feed device according to claim 1, characterized

characterized in that the pivoting movement over a

Guideway (7) is positively guided.

3. Feed device according to one of the preceding

Claims, characterized in that the pivoting movement is determined by conditioning the sear (1) on a cam element (7).

4. Feed device according to one of the preceding

Claims, characterized in that the sling pawl (1) has a contact element (6) which is supported on a guide track (7).

5. Feed device according to one of the preceding

Claims, characterized in that the squeezing pawl (1) has a contact element (6) which is supported on the cam element (3) during a pivoting movement.

6. Feed device according to one of the preceding claims, characterized in that the catch element (1) comprises a receiving area (5) for the driver (2), in which the driver (2) during a pivoting movement of

When the catch (2) is not decoupled, the catch (1) can move relative to the catch (1).

7. Feed device according to one of the preceding

Claims, characterized in that the receiving area (5) is a backdrop-like recess.

8. Feed device according to one of the preceding

Claims, characterized in that the receiving area (5) is open on one side.

9. Extraction device with a collection device according to one of the preceding claims, characterized.

Furniture with a pull-out device according to claim