RU2597818C2 - Device for retraction of movable furniture part in middle position - Google Patents

Abstract

FIELD: personal use and household items.

SUBSTANCE: device for retraction of movable part of furniture, particularly sliding door, in middle position comprises driver installed with possibility of directed movement in housing, and connected to it central slide installed with possibility of directed motion; two side slider installed with possibility of directed motion, spaced apart towards motion direction X, wherein side sliders are connected to each other by means of energy storage unit, which force is applied from one of side slides in direction of other side sliders. For each of side slides, there is control slide by means of which during movement of middle slide from middle position such of side sliders, in direction of which middle slide moves is temporarily connected to middle slider, while other of side sliders is temporary fixed on housing. Side sliders are interconnected by damping device, by means of which motion of side slides to each other is damped. Damping device comprises at least one cylinder and at least one piston rod, wherein said at least one cylinder is connected to one of side sliders, and said at least one piston rod is connected to other of side sliders.

EFFECT: invention is aimed at simplification of device.

11 cl, 8 dwg

Description

This invention relates to a device for retracting a movable piece of furniture, in particular a sliding door, in a middle position.

Retractors in the furniture industry are used in various ways, for example, to automatically retract drawers or furniture doors from a specific position to a closed position. In some cases, furniture with sliding doors provides that the sliding door from the closed position can be opened in two different, usually opposite directions. In this case, the closed position is also called the middle position. For example, if more than two sliding doors are used to close a furniture opening, this possibility of moving an internal sliding door or doors is preferable.

From the description of DE 202010007230 U1, a retractable bidirectional device is known which makes it possible to damp automatically retract in two directions to a middle position. In this device, two unidirectional retractors operating in opposite directions interact with a connecting slider that moves longitudinally and at an angle. When the sliding door is moved from the middle position using the corresponding pull tabs on the sliding door, the connecting slider moves in the corresponding opening direction and interacts with one of the two unidirectional retractors depending on the direction of movement. As a result of movement in the opening direction, the retractor spring of the retractor mechanism is pulled to the point at which the retractor leash, which is affected by the connecting slider, is tilted to the locked position. In this process, the connection of the connecting slide with the retractor is disconnected. In addition, since the connecting element moves obliquely in the retractor, when the door is further moved in the corresponding opening direction, the connecting element goes further away from the pulling protrusion of the sliding door and, as a result, is disconnected from the door. Then the door is already free to move on. When the door moves in the closing direction, back to the middle position, the second drive ledge of the sliding door comes into contact with the corresponding connecting element of the connecting slide and carries it into motion in the closing direction. The connecting slider acts on the locked leash of the tensioning retractor and releases it. As a result, the retractor is activated, and the connecting slider is pulled into the middle position by the action of the retracting spring and damped by the damping element. When moving the sliding door from the middle position in the opposite direction, the same process is performed in the mirror-reverse manner using the corresponding other unidirectional retractor.

A disadvantage of the described bi-directional retractor is the use of two separate retractors, each acting in the same direction. Among other things, the use of two separate retractors is expensive due to the mechanically complex separate locking device and optional damping elements used.

Thus, the invention is directed to a device for bilaterally retracting a movable piece of furniture in a middle position, in which you can refuse to use individual retractors that act in the same direction.

This problem is solved in the retractor with the characteristics of paragraph 1 of the claims of the present invention.

The proposed retractor of the aforementioned type comprises a leash installed with the possibility of directional movement in the lateral direction in the housing of this device, and a middle slider connected with the leash, mounted with the possibility of directional movement in the lateral direction. In addition, the device has two side sliders that are mounted with the possibility of directional movement in the lateral direction and are spaced apart from each other in the direction of movement, the side sliders being connected to each other by means of an energy storage device, by means of which a force is applied to the side sliders in the direction from one side slider on the other. For each slider, a control slider is provided, by which, when the middle slider moves from the middle position, that side slider in the direction of which the middle slider moves is attached to the middle slider, while the other side slider is fixed on the housing.

The connection of the middle slider to one of the two side sliders is provided by the control slider depending on the direction of movement of the middle slider and, consequently, the leash and, ultimately, the movable furniture part. In this case, the other side sliders are fixed. As a result, when moving the furniture part from the middle position, the distance between the two side sliders increases, regardless of the direction of movement. Thus, the energy storage device installed between the side sliders is activated in any direction of movement. Therefore, the proposed retractor can be implemented using only one energy storage device.

According to a preferred embodiment of the invention, the side sliders are additionally connected to each other by means of a damping device by which the movement of the side sliders dampens towards each other. This additionally ensures damping during automatic retraction, also using only one damping device.

According to yet another preferred embodiment, the control sliders are mounted for directional movement in a corresponding guide groove of the control slide located in the side sliders in a direction transverse to the direction X of movement, and comprise a corresponding connecting pin by which they engage with the connecting groove for connecting the middle slider, and the corresponding guide pin, through which they engage with the control track corps. As a result, the movement of the control sliders can be in a simple and trouble-free way associated with the position of the side sliders, thereby achieving reliable control of the connection between the middle and side sliders.

In a particularly preferred case, the connecting groove comprises at least one portion extending obliquely to the direction of travel. This contributes to a smooth, without jamming, activation of the control slider.

In accordance with another preferred embodiment of the invention, the leash is fixed on the housing in one of two external opening positions located at a distance from the middle position. The fixation of the middle slide and the corresponding lateral slide moving with it can be achieved by fixing the leash on the housing, so that the structure can remain in the open position until the retraction process is started in the direction of the middle position.

According to a further preferred embodiment of the invention, the leash has two lateral grips for gripping the activator of the door hardware. In a particularly preferred embodiment, the directional movement of the lead in the guides of the housing is provided, at least one guide being bent in the outer portion so that the activator engulfed by the lead in the middle position is released when the lead is in one of two opening positions on the outer portion of the guide.

Thus, a simple connection of the proposed device with a movable piece of furniture, for example, with a sliding door, is achieved. Only one activator must be fixed on the furniture part, by means of which the furniture part is connected to the retractor between the middle position and the opening positions.

According to another preferred embodiment of the invention, the grippers are pivotally connected to the middle part of the leash and mounted with the possibility of directional movement, by means of a guide pin, in a curved guide, moreover, in one of the opening positions, one of the grips rotates accordingly with respect to the middle part of the leash. This configuration provides the possibility of a given connection of the activator with the leash and disconnect it from the leash.

Other preferred and additional embodiments of the invention are the subject of dependent claims.

Below the invention is explained in more detail with reference to the drawings, which depict the following.

FIG. 1A is a schematic top view of a retractor with an open casing in an average position.

FIG. 1B is the retractor of FIG. 1A with partially visible hidden lines.

FIG. 2A is the retractor of FIG. 1A in the first opening position.

FIG. 2B is the retractor of FIG. 2A with partially visible hidden lines.

FIG. 3A is the retractor of FIG. 1A in the second opening position.

FIG. 3B is the retractor of FIG. 3A with partially visible hidden lines.

FIG. 4 - retractor of FIG. 1A at an intermediate stage of its installation.

FIG. 5 - retractor of FIG. 1A at another intermediate stage of its installation installation.

FIG. 6A-6C are schematic top views of a retractor with an open casing in accordance with a further embodiment and depicted in different positions.

The drawings, described in detail below, depict examples of the proposed retractor shown in different operating positions and views. In all the drawings, the same elements are denoted by the same reference numerals. However, for better clarity, some elements are shown in the drawings without reference numbers.

In FIG. 1-3, the retractor is shown in different positions, with FIG. And the closed lines are not visible, while in FIG. The closed lines are partially shown as dashed lines. FIG. 4 and 5 correspond to the view in the position of FIG. 1A, with FIG. 4-5, the various elements of the retractor are not shown to better show the elements below them. In this sense, FIG. 4-5 illustrate a retractor at intermediate stages of its installation when some elements are not installed. In addition, to show the inside of the design of the device, all the drawings removed the top cover of the housing of the retractor.

Below in the description of the drawings, terms such as "top", "bottom", "left", "right", "front", "back", etc. refer only to the corresponding sample image. These terms should be understood not restrictively, but only in the context of the corresponding figure of the drawing.

In the drawings, a retractor 1 is shown in cooperation with door hardware 2 (cf. FIG. 1). Further, for shortening, the retractor 1 will also be called the device 1. The door hardware 2 is directly or indirectly mounted on a movable sliding door, which is not shown here, for example, by inserting dowels 3 into the corresponding holes of the sliding door 3. At the lower end of the door accessories 2 there is a rod-shaped activator 4, interacting with the retractor 1. Relative to the image plane in the drawings, the sliding door is mounted with the possibility of movement to the right and left. The corresponding guides for the sliding door are also not shown here. Further, the direction of movement is also referred to as the X direction, and moving to the right means moving in the direction of positive values of X, and moving to the left - in the direction of negative values of X. Together with the door hardware 2, device 1 is directly or directly fixed, for example, on the furniture a guide placed on the housing, or on an end stop located on the housing. It should be noted that, on the contrary, the activator can also be placed motionlessly on the furniture body, and the device 1 can be attached to the sliding door so that it moves with the sliding door. Thereby, the same functionality is achieved as in the considered example, when the immobility of the device 1 is provided.

The device 1 has a housing 10, and in this case only the lower part of the housing is shown 10. Like the upper part of the housing (not shown), this part is preferably made in the form of an integral part, for example, by injection molding of plastics. For amplification, partitions 17 (see FIG. 4) can be located on the housing 10, which, in addition, provide protection from dust and surveillance. The device 1 has a leash 20, which partially protrudes from the housing 10, and with which the activator 4 of the door hardware interacts 2. The leash has a middle part 21 and side hooks 22, 23 pivotally connected to it, a straight guide 11 is placed in the housing 10, along which the lateral direction can move the middle part 21 and, therefore, the leash 20. In the shown case, the middle part 21 in the rectilinear guide 11 is in interaction with two guide pins. At the same time, the guide pins form the axis of rotation of the articulated grips 22, 23. At a certain distance from the place of the hinge, an additional guide pin is inserted into each gripper 22, 23, which interacts with the guide 12 of the housing 10, which is curved at its ends and made straight in the middle part. Of course, that the leash 20 can be performed not only as shown in the drawings. For example, the guide pins may have a different shape, be present in a different amount and / or have a different position on the lead 20. As shown in FIG. 1, in the middle position, the grippers 22 and 23 cover the activator 4 of the door hardware. When the leash 20 is moved laterally, the shape of the opening thus formed, covering the activator 4, does not initially change. Only when the guide pin of the gripper 22 or 23 is moved to the curved part of the guide 12, the corresponding gripper 22, 23 is tilted to the side and opens the opening so that there is an unlocking of the activator 4 in the corresponding direction. For rightward movement, this is shown in FIG. 2A and 2B, for moving to the left - in FIG. 3A and 3B.

In addition, the device 1 has three sliders for which directional lateral movement is also possible: the middle slider 30, the left side sliders 40 and the right side sliders 50. To provide lateral direction of the three aforementioned sliders 30, 40, 50, a straight guide is provided in the housing 10 13 sliders. There is a central head 14 of the housing, also used for guiding and additionally for receiving screws for connecting the halves of the housing 10.

Relative to each other, the sliders 30, 40, 50 are located in different parallel planes. The lateral sliders 40, 50 are located directly on the lower part of the housing and their direction is provided in the corresponding guide 13 of the sliders. Thus, the side sliders 40, 50 are located in the first plane. This is shown in detail in FIG. 4, where the device 1 is shown without the middle slider 30. The middle slider 30 is installed in the second plane, partially overlapping with the side sliders 40, 50. The direction of the middle slider 30 by the housing head 14 is provided by the guide groove 31 and the circuits 32 along the correspondingly made circuits 41 , 51 of the lateral sliders 40 and, accordingly, 50. Additionally, the direction of the sliders 30, 40, 50 in the lateral direction can be provided using the corresponding guides in the upper part of the housing.

The lateral movement of the middle slider 30 is associated with the lateral movement of the leash 20 by means of the left and right retaining grooves 33 and 34, which are located in that part of the middle slider 30 that is upper in the drawings, and the guide pins of the leash 20 abut against the outer side walls thereof. As shown in FIG. 2A, 2B and 3A, 3B, at the end of the lateral movement of the leash 20 when moving it in the curved part of the guide 12, the guide pins are immersed in the lower part of the locking groove 33, 34, as a result of which the lateral movement of the leash 20 and the middle slide 30 are fixed in the housing 10 After unlocking the activator 4, the leash 20 and the middle sliders 30 remain in the left or right opening position shown in FIG. 2A, 2B and 3A, 3B. The fixation of the leash 20 and the middle slider 30 on the housing 10 is removed only if, during the reverse movement of the activator 4, the open grip 22 or 23 again rises along the curved guide 12 and the opening of the leash 20 is closed.

The lateral sliders 40, 50 comprise guide slots 42 and 52 of the control slider extending perpendicular to the lateral direction X of movement, and in which the control slider 400 or 500 can move back and forth in the Y direction (see, in particular, FIG. 4). The control sliders 400, 500 are designed to connect the middle slider 30 with the left side slider 40 or the right side slider 50. For this, each control slider 400, 500 has a corresponding connecting pin 401 and 501 protruding from the image plane in the drawings in the direction of the middle slider 30. Depending on the position of the control slider 400, 500 in the Y direction, the connecting pins 401, 501 interact with the corresponding connecting groove 35 and 36, made in the left or right side of the middle slider 30. In addition, for the movement of the control sliders 400, 500 they additionally contain a guide pin 402 and 502 facing the lower part of the housing 10. Its direction is provided in the corresponding left or right control track 15, 16, made in the housing 10. The control tracks 15, 16 in each case are bent in the section that faces the center of the device 1. As a result, on the one hand, lateral movement of the side sliders 40, 50 towards the center is limited. On the other hand, the corresponding control slider 400, 500 slides downward, i.e. in the direction from the leash 20 in the negative Y direction when the side sliders 40, 50 are in their internal stop position, i.e. at the left stop in the case of the right side slider 50 or at the right stop in the case of the left side slider 40. Since the connecting grooves 35, 36 of the middle slider 30 are open from below, i.e. facing away from the lead 20, the control slider 400 or 500, slidable in the direction of the lead 20, connects the middle slider 30 to the left or right side slider 40 or 50, and the control lead 400, 500, shifted in the direction from the lead 20, provides disconnection the middle slider 30 from the corresponding side slider 40 or 50.

As shown in FIG. 1, when the sliding door is moved from the middle position to the right, the left side slider 40 is fixed in its right, inner position on the housing 10 by means of the control slider 400, which slides down in the negative direction Y and is disconnected from the middle slider 30. The shift of the control slider 400 to the curved a portion of the control track 15 is supported by an inclined upper portion 37b of the locking groove 35. On the other hand, the right slider 50 is connected to the middle slider 30 using the right slider 500, a shift upward in the connecting groove 36 in the positive direction Y, and move with them to the right, as shown in FIG. 2. The entry of the control slider 500 into the locking groove 36 is based on the inclined lower portion 38a of the locking groove 36. In the right stop position, also called the opening position, the opening of the lead 20 is opened as a result of the movement of the right grip 23 when the corresponding guide pin enters curved section of the guide 12.

As shown in FIG. 3A and 3B, while moving the activator 4 to the left from the middle position of FIG. 1A and 1B, the right side slider 50 is fixed, in a mirror image, in its left stop position and disconnected from the middle slider 30, while the left slider 40, attached to the middle slider 30, is moved to the left by the upwardly sliding control slider 400 until until the left grip 22, moved in the curved guide 12, opens the opening of the leash 20 and simultaneously fixes the leash 20 and, thus, the middle slider 30 and the left side slider 40 in the illustrated extreme left position. The displacement of the control slider 500 by the curved section of the control track 16 is based on the inclined upper section 38b of the locking groove 36. The entry of the control slider 400 into the locking groove 35 is supported by the lower section 37a of the locking groove 35.

The lateral sliders 40, 50 are thus located relative to each other at a minimum distance when the leash 20 and, therefore, the sliding door are in the middle position (see Figs. 1, 4). When moving the sliding door or leash 20 from this middle position, the distance between the two side sliders 40, 50 increases regardless of the direction in which this movement is opened.

The side sliders 40, 50 are connected to each other, on the one hand, by means of a damping device 60, and on the other hand, by means of a mechanical energy storage device 70. For this purpose, inside each side slide 40, 50 there are receiving parts 43 or 53 for receiving the ends of the damping device 60. The damping device 60 has at least one cylinder 62 and a piston rod 61 (see Fig. 5), one of the receiving parts , for example, the receiving part 43 of the left side slider 40, is designed to enter into engagement with the head part of the piston rod 61, and the second receiving part, for example the receiving part 53 of the right slider 50, is designed to connect the cylinder 62 of the damping device 60 with the corresponding side p lzunom 50. The damping device 60 in a known manner arranged so that extension of the piston rod 61 of a piston 62 takes place with the least possible effort, while depression of the piston rod 61 into the cylinder 62 occurs to braking. From the point of view of the movement of the sliding door, this means that the door moves from the middle position without damping, regardless of the direction of movement, while moving to the middle position occurs with braking, i.e. damped. Of course, both movements can be damped, and if necessary, to different degrees.

In addition, the side sliders 40, 50 are connected to each other by means of an energy storage device 70. In the simplest case, the energy storage device 70 may be a spring directly connected to the side sliders 40, 50. The spring attracts two sliders 40, 50 to each other, in particular, laterally displaced side sliders 40, 50 to other, fixed side sliders 50 , 40, and thus comes into a stress state, or an additional stress state relative to the initial stress state, when the sliding door moves from the middle position to one of two sides. As a result of the described locking of the leash 20, the middle slider 30 and (depending on the direction of movement) one of the two side sliders 40, 50, the spring remains in tension until the activator 4 releases the lock during reverse movement of the door. Therefore, in this case, the door is automatically automatically retracted to the middle position under the action of the spring force.

In the presented embodiment, the energy storage device 70 is not a spring directly connected to the side sliders 40, 50, but a spring 71, which is installed in the middle part of the device 1 and interacts with the winding devices 72 using cables attached to its ends, 74. Each winding device 72, 74 comprises a gear wheel meshing with a rack 44 or 54 of the left and right side sliders 40, 50. In addition, each winding device 72, 74 has a winding cam 73, 75 having approximately spiral shape. In this design, in addition, the spring 71 is stretched as an energy storage device when the side sliders 40, 50 are moved away from each other. As a result, the spring 71 applies a restoring load to the previously previously offset lateral slider 40, 50 in the mid-direction direction. Unlike the spring directly connected to the side parts, the winding devices 72 and 74 allow you to influence the load-displacement relationship between the distance of the side sliders 40, 50 from each other and the restoring load acting on them, due to the corresponding design of the winding cams 73 and 75

In FIG. 6A-6C show an additional embodiment of the retractor 1 according to the invention. In these figures of the drawings, the same reference signs are used to refer to the same or the same acting elements as for the embodiment described above.

In the drawings, the retractor is shown in the middle position (FIG. 6A), the right opening position (FIG. 6B) and the left opening position (FIG. 6C). From the point of view of the basic principle of operation, the retractor 1 of the second embodiment is not different from the first embodiment of FIG. 1-5. For this reason, for appropriate explanation, you can refer to the description of the first embodiment of the invention.

Unlike the first option, however, in this case, the leash 20 is formed by two parts from two grippers 22, 23. The middle part 21, which was present in the first embodiment of the invention, is not used here. Another difference is that the control sliders 400, 500, which lock the left side slider 40 or the right side slider 50 in the corresponding opening position of the leash 20, are made in the form of pivoting levers.

In both illustrated embodiments, the retractor 1 of the invention automatically retracts a movable piece of furniture, in particular a sliding door, to a middle position in which a single energy storage device 70 and a single damping device 60 are used. Both the energy storage device 70 and the damping device 60 are activated when moving the door in both directions or returning the door from both directions. The use of two cylinders 62 in the described embodiments is due to the task of obtaining the required damping characteristics in combination with the flat configuration of device 1. Two cylinders 62 work in parallel, so that in principle they can also be replaced with one larger cylinder. If the damping device acted in only one direction of travel, to achieve the required damping characteristics, the four cylinders shown here or two larger cylinders would have to be used.

An additional important advantage of the proposed retractor 1 as compared with solutions known in the art is that the retracting action and, optionally, damping are the same in both directions, while in the case of the known individual retractors the retracting action and damping , respectively, and the movement of the movable furniture part can have very strong differences depending on the direction of movement, for example, due to technological tolerances.

LIST OF REFERENCE NUMBERS

1 retractor

2 door hardware

3 dowel

4 activator

10 building

11 straight guide

12 curved guide

13 slide guide

14 body head

15, 16 control track

17 partition

20 leash

21 middle part

22, 23 capture

30 middle slider

31 guide groove

32 circuit

33, 34 locking groove

35, 36 connecting groove

37a, 38a curved lower section

37b, 38b curved upper section

40 left side slider

41 circuit

42 guide groove of the control slider

43 receiving part

44 gear rack

50 right side slider

51 circuit

52 guide groove of the control slider

53 receiving part

54 gear rack

60 damping device

61 piston rod

62 cylinder

70 energy storage

71 spring

72, 74 winding device

73, 75 winding cam

400 control slider

401 connecting pin

402 guide pin

500 control slider

501 connecting pin

502 guide pin

Claims (11)

1. A device (1) for retracting a movable piece of furniture, in particular a sliding door, in a middle position, containing:
- a leash (20), mounted with the possibility of directional movement in the housing (10) of the device (1), and a middle slider (30) attached thereto, mounted with the possibility of directional movement;
- two side sliders (40, 50), installed with the possibility of directional movement, spaced from each other in the direction X of movement, and the side sliders (40, 50) are connected to each other by means of an energy storage device (70), the force of which is applied from one of lateral sliders (40, 50) in the direction of the other of the lateral sliders (40, 50), and
- for each of the lateral sliders (40, 50), a control slider (400, 500) is provided, by which, when the middle slider (30) moves from the middle position, that of the lateral sliders (40, 50) in the direction of which the middle slider moves (30 ), temporarily attached to the middle slider (30), while the other of the side sliders (40, 50) is temporarily fixed on the housing (10), characterized in that
- the side sliders (40, 50) are connected to each other by a damping device (60), by which the movement of the side sliders (40, 50) is damped towards each other, while
- said damping device (60) comprises at least one cylinder (62) and at least one piston rod (61), said at least one cylinder (62) being connected to one of the side sliders (40, 50), and said at least one piston rod (61) is connected to another of the side sliders (40, 50). 2. The device according to claim 1, in which the control sliders (400, 500) are installed with the possibility of directional movement in the corresponding guide groove (42, 52) of the control slider of the side sliders (40, 50) in the direction transverse to the direction of motion X and have a corresponding connecting a pin (401, 501) by which they engage with a connecting groove (35, 36) of the middle slider (30) for connecting the middle slider (30) with the corresponding side slider (40, 50), and the corresponding guide pin (402, 502) by which they enter atseplenie with the control track (15, 16) of the housing (10). 3. The device (1) according to claim 2, in which the control path (15, 16) contains at least one section extending across the direction X of movement. 4. The device (1) according to any one of paragraphs. 2-3, in which the connecting groove (35, 36) comprises at least one portion (37a, 38a, 37b, 38b) extending obliquely with respect to the direction X of movement. 5. The device (1) according to any one of paragraphs. 1-3, in which it is possible to fix the leash (20) on the housing (10) in one of two external opening positions located at a distance from the middle position. 6. The device (1) according to any one of paragraphs. 1-3, in which the leash (20) contains two side grip (22, 23), designed to grip the activator (4) of the door hardware (2). 7. The device (1) according to claim 6, in which the leash (20) is mounted with the possibility of directional movement in the guides (11, 12) of the housing (10), and at least one guide (12) is curved in the outer section in such a way that the activator (4), covered by the leash (20) in the middle position, is released when the leash (20) is in one of two opening positions on the outer portion of the guide (12). 8. The device (1) according to claim 7, in which the grippers (22, 23) are pivotally connected to the middle part (21) of the leash (20) and are mounted with the possibility of directional movement by means of a guide pin in a curved guide (12), so that one of the opening positions, the corresponding grip (22, 23) is rotated relative to the middle part (21) of the leash (20). 9. The device (1) according to any one of paragraphs. 1-3, 7-8, in which the side sliders (40, 50) contain receiving parts (43, 53) for connection with a damping device (60). 10. The device (1) according to any one of paragraphs. 1-3, 7-8, in which the side sliders (40, 50) contain a corresponding gear rack (44, 54) interacting with the energy storage device (70). 11. The device (1) according to claim 10, in which the energy storage device (70) comprises two winding devices (72, 74) and a spring (71) located between them.

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