EP1961332B1 - Damping device for movable furniture parts - Google Patents

Abstract

The device has a slide bearing a catch and displaceably arranged in a housing. The slide is held to place a fastening latch (33) in a catching position for catching a driver attached to a mobile part. The slide is displaceable into an end position after lifting the latch by the force of a force accumulator, damping by a pneumatic damper, where the force accumulator includes a scroll spring (9). The spring is supported by a force accumulator housing comprising a core part (10) fixedly connected to the former housing and a mantle part (11) rotatably supported by the core part.

Description

The invention relates to a device for damped Endanzug a movable part, in particular a sliding door, a drawer or other furniture part, with a slidably mounted in a housing and a satchel overlapping slide, which mediates a catch in a Einfangstellung for capturing a movable part Mitnehmers is held and is attenuated by releasing the catch of the force of an energy accumulator of a damping member in an end position.

A device of the type mentioned above is from DE 20 2005 006 931 U1 previously known. The attenuator is formed there as an eddy current brake. The energy storage is formed by a helical gear tension spring.

A similar device, but with a pneumatic damper, describes the DE 203 15 124 U1 , Again, the energy storage is formed by a helical spring. A similar device with double pneumatic damper describes the DE 20 2004 018 970 U1 , The EP 363 642 A1 describes a linear damper with a gear transmission. From the EP 1625 810 A1 is a pneumatic damper for a linear guide known. A door closer with a liquid rotary damper describes the WO 2005001227 ,

From the prior art, more catchment aids for drawers or tightening aids for sliding doors are also known, in which the force is applied to the displacement of the drawer or the sliding door in the end position of a tensioned helical coil tension or compression spring. In all known solutions, the energy storage has a relatively steep running Spring characteristic. The tightening force is large at the beginning of the movement coupling into the moving furniture part and decreases until it reaches the end position strongly. That's how it describes W02005 / 044046 A1 a pull-out mechanism for drawer pull-out guides with a guide rail. As spring element there is provided an elongated, deflected coil spring. An automatic catchment for drawers pull-out guides is also known from the W02004 / 100716 A1 where as a spring element, a coil spring is used.

The invention has for its object to further develop a generic device nutzsvorteilhaft.

The problem is solved by the invention defined in claim 1.

First and foremost, it is provided that the energy accumulator has a scroll spring. A roll spring has a spring characteristic that rises very slightly. A scroll spring or a mainspring consists essentially of a long, wound into a spiral spring steel strip. Such springs are used in self-winding retractors, such as tape measures or roller shutter belts. According to such a rolling or mainspring is used as energy storage. In this case, the roll spring unwinds at the displacement of the slider from the Einfangstellung to the end position at most only a few turns. The scroll spring is in a power storage housing fixedly connected to the housing. The power storage housing is in two parts. It consists of a core part and a shell part. The core part is firmly connected to the housing. The shell part has a substantially cup-shaped shape. The outer wall of the pot forms a winding zone for a pull rope. The spirally wound leaf spring is connected at one end to the core part. She can be there be hooked in a slot. The other end of the spring is connected to the rotatably mounted on the core part shell part. Again, the end of the spring form a hook and be hooked into a slot of the jacket wall of the shell part. The outer diameter of the shell part is in relation chosen on the displacement path of the slider so that the shell part in the course of the slide displacement a maximum of twice, preferably only once, rotates about its axis. The energy storage, consisting of a housing core part and a housing shell part and from the scroll spring, can be mounted as an assembly. It may be provided a mounting fuse to mount the power storage in the tensioned state. The energy storage can be re-tensioned. This is done by the shell part is rotated relative to the core part by several, preferably one and a half turns in the clamping direction of the spring. This increases the number of spring coils and thus slowly the spring force. The entire device is thus adaptable to different heavy drawers or sliding doors. The core part and the shell part may be made of plastic. The core member may form a journal which simultaneously holds one end of the spring. The bearing pin can protrude through a bottom opening of the cup-shaped shell part. At the opening of the shell part, a bearing collar can be connected, which rests in a bearing groove of the core part. The other end of the spring is hooked into a mounting slot of the annular wall of the shell part. The core member may be secured to a portion of the generally two-piece housing with a fastening tab. The slide can be made of plastic. The bottom or the ceiling of the housing may form a guide rib or a plurality of guide ribs, which engage in a guide groove of the slider. The pull cable, which is wrapped around the housing shell part and attached to the slider, may be made of nylon. Parallel to the leadership of the slide in the housing, a pneumatic damper is provided. This consists of a cylinder, which rests in a fork-shaped receptacle of the slider. This receptacle is formed by two spaced apart retaining walls. The belonging to the pneumatic damper piston rod is connected on one side via a fixing pin to the housing. The other end of the piston rod carries a piston, which is slidably guided in the cylinder. The piston has an air passage opening, so that a damping of the slider movement is generated. It is essential that the slider movement dampened in the tightening direction is. The piston can be designed so that when the slide is displaced in the opposite direction, ie in the opening direction, considerably more air can flow over the piston, so that there is no or only little damping in this direction of movement. The sear is pivotally mounted on a boom of the slider. It has a guide pin, which is guided in two congruent guide slots of the housing. The squeegee also has a locking pin, which is also guided in the guide slot. The guide slot has at its one end an angled portion which is provided with a latching niche. In this detent recess of the locking pin occurs when the device is in its catch position. The pin is positively controlled in this latching niche, when the sling pawl, from a drawer or a sliding door, is dragged from the end position to the catching position. Along with this shift, the energy storage is stored. The sling pawl turns transversely in this catching position, so that a catching jaw formed by the squeezing catch can catch a catch, which is firmly connected to the door or the drawer. The driver strikes against a stop arm of the Fangmaules to pivot the sling pawl. In this case, the locking pin from the catch occurs. The force acting on the traction cable of the energy accumulator pulls the slide in the end position and travels with the then firmly entrapped in the capture mouth driver. In a further variant of the invention, it is provided that the cylinder forming the damping member is connected in the same material as the slider, which is longitudinally guided within the housing. In this embodiment, the cylinder does not need to have a lid. But he has a material integrally molded cylinder bottom. The piston is anchored with its piston rod on the housing tensile strength and protrudes with his head in the cylinder. The piston has an air passage opening, which is designed as a valve. From the slider can protrude a boom which rotatably supports a guide pin of the sear in a bearing eye. A guide pin of the adjacent detent pin of the sear is guided in a guide slot which has an acute-angled locking projection at the end. The catch has a stop arm against the a driver attached to the rear of the sliding door strikes when it enters the safety jaw. In a proper operation, this is done with inclined sear, so that the driver overflows due to the inclination receding lying pressure arm of the sear. When opening the sliding door and when tensioning the force accumulator, a pressure flank, which is opposite to the stop arm, acted upon by the driver. When the driver reaches the detent position, the pressure arm forming the pressure flank emerges from the path of movement of the driver as a result of a pivoting of the safety catch. In the case of a faulty operation in which the squeezing catch assumes an end position corresponding to the closed position when the sliding door is open, the catch can still be brought into the catching mouth. For this purpose, the pressure flank is part of a catch. The catch is a hinged by a spring hinge on the sear arm. The spring hinge forms a spring. This is preloaded. For this purpose, a tie rod attacks on the catch. The catch can shift against the tie rod. He has a ramp, on which the driver can accumulate. He then overruns the catch, which snaps back into its locked position when the driver has overrun the ramp. The satchel is a unitary injection molded part. The tie rod is materially connected to the sear and forms a hammer head, which rests in a holding chamber of the latch. The pneumatic cylinder is the same material with the slider and material unit connected to a boom. At the end of the boom is a bearing eye, in which a guide pin of the sear is guided. A distance from the guide pin locking pin is also guided in a guide slot of the housing. The guide slot forms an acute-angled locking portion, in which the locking pin can occur. On the slide an arcuate detent spring is attached the same material. This forms a first latching recess, in which the latching pin rests when it is in the guide slot. The detent spring forms a second detent recess, in which the guide pin is located when it is in the detent portion of the guide slot. Both the slide and cylinder, molded detent spring and release as well as the sear can be made as a single injection molded plastic parts.

Fig. 1

eine Seitenansicht eines ersten Ausführungsbeispiels,

Fig. 2

eine Unteransicht des ersten Ausführungsbeispiels in der Endstellung,

Fig. 3

eine Darstellung gemäß Fig. 2 in der Fangstellung,

Fig. 4

eine Darstellung gemäß Fig. 2 bei abgenommenem Gehäusedeckel,

Fig. 5

eine Darstellung gemäß Fig. 3 bei abgenommenem Gehäusedeckel,

Fig. 6

einen Schnitt gemäß der Linie VI - VI in Fig. 2,

Fig. 7

eine Explosionsdarstellung des Pneumatikdämpfungsglieds,

Fig. 8

eine Explosionsdarstellung des Kraftspeichers aus einer ersten Perspektive,

Fig. 9

eine Darstellung gemäß Fig. 8 aus einer zweiten Perspektive,

Fig. 10

eine perspektivische Darstellung der an einer Korpusdecke befestigten Dämpfungseinrichtung in einer Zwischenstellung,

Fig. 11

eine perspektivische Darstellung der Dämpfungseinrichtung in der Zwischenstellung mit abgenommener Befestigungskonsole,

Fig. 12

eine perspektivische Darstellung eines Gehäuseteiles,

Fig. 13

eine perspektivische Darstellung der einen Gehäusedeckel ausbildenden Befestigungskonsole,

Fig. 14

eine Darstellung gemäß Fig. 3 eines zweiten Ausführungsbeispiels,

Fig. 15

eine Darstellung gemäß Fig. 2 des zweiten Ausführungsbeispiels,

Fig. 16

eine Darstellung gemäß Fig. 4 des zweiten Ausführungsbeispiels,

Fig. 17

eine Darstellung gemäß Fig. 5 des zweiten Ausführungsbeispiels,

Fig. 18

eine perspektivische Darstellung des Gehäuseunterteils des zweiten Ausführungsbeispiels in der Fangstellung,

Fig. 19

eine Explosionsdarstellung des Kraftspeichers,

Fig. 20

die Fangklinke mit gefesseltem Schnäpper,

Fig. 21

die Fangklinke mit gelöstem Schnäpper,

Fig. 22

den Kolben,

Fig. 23

eine perspektivische Darstellung der Fangklinke und

Fig. 24

die Schieber-Zylindereinheit in perspektivischer Darstellung mit Kolben.

Embodiments of the invention are explained below with reference to accompanying drawings. Show it:

Fig. 1

a side view of a first embodiment,

Fig. 2

a bottom view of the first embodiment in the end position,

Fig. 3

a representation according to Fig. 2 in the catch position,

Fig. 4

a representation according to Fig. 2 with removed housing cover,

Fig. 5

a representation according to Fig. 3 with removed housing cover,

Fig. 6

a section along the line VI - VI in Fig. 2 .

Fig. 7

an exploded view of the pneumatic damping element,

Fig. 8

an exploded view of the energy storage from a first perspective,

Fig. 9

a representation according to Fig. 8 from a second perspective,

Fig. 10

a perspective view of the attached to a carcass cover damping device in an intermediate position,

Fig. 11

a perspective view of the damping device in the intermediate position with removed mounting bracket,

Fig. 12

a perspective view of a housing part,

Fig. 13

a perspective view of a housing cover forming mounting bracket,

Fig. 14

a representation according to Fig. 3 a second embodiment,

Fig. 15

a representation according to Fig. 2 of the second embodiment,

Fig. 16

a representation according to Fig. 4 of the second embodiment,

Fig. 17

a representation according to Fig. 5 of the second embodiment,

Fig. 18

a perspective view of the housing lower part of the second embodiment in the fishing position,

Fig. 19

an exploded view of the energy storage,

Fig. 20

the satchel with tied catch,

Fig. 21

the catch with a released catch,

Fig. 22

the piston,

Fig. 23

a perspective view of the sling and

Fig. 24

the slide-cylinder unit in perspective view with pistons.

The device shown in the drawings can be secured in the region of an upper running rail 40 of a sliding door on the ceiling 42 of a carcass.

The housing 1 is fastened to the rear of the running rail 40. The running rail 40 has two guide grooves 41 for the rollers of the two sliding doors, not shown. A driver 6 is attached to the back of the sliding door. This driver cooperates with a sear 2 of the device. The sear 2 has a catch mouth 37. This catch mouth is formed by a stop arm 38 and a pressure arm 39. In the in Fig. 3 shown fishing position is the catch mouth 37 in an oblique opening position. If the sliding door is closed, the catch 6 comes against the stop arm 38 of the catch mouth 37. The catch 2 is pivoted. A locking pin 5 of the sear 2 thereby leaves a detent niche 4 of a section 14 'of a guide slot 14. The force of a tensioned energy accumulator 7 then causes a displacement of the sear 2 with trapped driver 6 in the Fig. 2 illustrated end position. When pivoting the sear 2 in the in Fig. 2 shown position of the driver 6 is engaged behind by the pressure arm 39. This pushes the driver 6 and the driver assigned to the sliding door in the end position.

The housing is in two parts. It has a first housing part 1 'and a second housing part 1 ", the latter forming the screw-on console with which the housing 1 is fastened to the cover 42 of the carcass Both housing parts 1', 1" form a guide formed by two ribs 15 for one Slider 3. The slider 3 has two ribs projecting in the direction of the housing part 1 ", which form between them a guide groove 16 in which the guide ribs 15 are in. The slider 3 has a boom on which the sear pawl 2 is pivotably mounted The guide pin 13 projects beyond two guide slots 14, 14 'which lie congruently to each other, wherein each of the two housing parts 1', 1 "is associated with a guide slot 14, 14 '. In addition, the locking pin 5 projects into the two guide slots 14, 14 '. The catch 2 is located outside the housing 1.

The energy storage 7 is formed by a mounting unit. This mounting unit consists of a core part 10, which can be fastened with a fastening tab 33 on the housing. From the fastening tab 33 projects from a bearing pin 31. The bearing pin 31 is surrounded by a bearing collar 34 at a slight distance. Between bearing collar 34 and bearing pin 31, an annular bearing groove is formed. The bearing pin 31 extends through a bottom opening 30, which forms a bearing opening, the bottom 29 of a cup-shaped housing shell part 11. The pot wall is formed by an open annular wall 27. On the outer wall, the annular wall 27 has a partial circumferential ridge 28. An extension of the bottom 29 also forms a peripheral ridge 29 '. In the cavity, which is surrounded by the annular wall 27, there is a scroll spring 9. This consists of a multi-wound leaf spring. One end 9 "of the leaf spring 9 is fastened in a fastening slot 32 of the bearing pin 31 projecting into the pot cavity The other end 9 'of the leaf spring 9 is fastened in a fastening slot 26 of the annular wall 27. The circumferential length of the outer wall of the annular wall 27 corresponds approximately to that of FIG Length of the guide slot 14.

On the slide 3, a pull rope 12 is attached, for example, nylon or other suitable material. The other end of the pull cable 12 is connected to the housing shell part 11, wherein the pull rope with several turns on the winding surface of the shell part 11 between the ribs 28, 29 'rests.

The housing part 1 "forms a bearing cup 36, in which the housing shell part 11 is rotatably mounted." This bearing cup supports the housing shell part 11 on the side opposite the bearing collar 35. The other housing part 1 'forms a mounting pin 44 opposite the bearing cup 36, which in FIG engages a cavity of the bearing pin 31. For the rotationally fixed attachment of the fastening tab 33 on the housing part 1 ', a further pin 45 is provided.

The slide 3 has on its side opposite the boom 43 two spaced apart retaining walls 24, 25. Between the two retaining walls 24, 25, the cylinder 19 extends a pneumatic damper 8. In the cylinder 19, which is closed with a plug 20, is located a piston 21. The piston 21 is screwed onto one end of a piston rod 17. In the plug 20 opposite the opening of the cylinder 19, a cap 18 is screwed. This has a central opening which supports the piston rod 17. The piston 21 opposite the end of the piston rod 17 is fixedly connected to a fastening pin 23 with the housing 1. During the displacement of the slide 3 relative to the housing 1, the piston 21 performs a relative movement relative to the cylinder 19. In this case, air flows through the piston. For this purpose, the piston has an air passage opening 22. The width of the air passage opening 22 determines the degree of damping. There are measures provided that increases the effective air passage opening when the slide 3 of his in the Fig. 2 illustrated end position in the in Fig. 3 shifted catch position, which is associated with the opening of the sliding door. This movement should be done undamped. A damping should be done in the opposite direction, when the energy storage discharges.

Since the circumference of the housing shell part 11 has a length which substantially corresponds to the length of the guide slot 14, the housing shell part 11 is rotated substantially once during the displacement of the slider 3 from the end position to the catching position. The preloaded roll spring 9 is only slightly further tensioned during this shift. The spring tension increases only slightly.

By repeatedly rotating the shell part 11 relative to the core part 10, however, the scroll spring 9 can be significantly stretched or relaxed. By these measures, the spring force of the scroll spring can be adapted to different requirements. During normal use, ie when tensioning the scroll spring in the course of opening the sliding door or when relaxing the scroll spring when closing the sliding door whose spring force changes only slightly.

In the in the FIGS. 14-24 illustrated second embodiment, functionally identical parts carry the same reference numerals as in the first embodiment. Here too, a housing half 1 has a guide slot 14 arranged near the edge of the housing, in which a guide pin 13 and a latching pin 5 of a sear 2 are guided. The sear 2 is located outside the housing. The guide slot 14 has at its end an acute-angled extension 14 ', in which the locking pin 5 can dip. This has a pivoting of the sear 2 from a driving position into a catching position result. In this position, the driver 6 a sliding door in the space between the pressure arm 39 and stop arm 38 occur.

In this embodiment, the pressure arm 39 is an acute-angled extension of a catch 46. The catch is formed by a plastic arm, which is fastened with a film hinge 48 on the catching pawl body. The film hinge 48 forms a leaf spring. The pressure arm 39 has a chamber 51 with a cross-section reduced chamber opening 51 '. Opposite the chamber opening 51 'is rooting on the catching pawl body 2, a tie rod 49. The tie rod 49 has a hammerhead head 50. In the in Fig. 21 shown manufacturing position leaves the catching pawl part 2, the injection molding machine it manufactures. In this state, the hammer head 50 is disposed outside the chamber 51. The leaf spring forming a film hinge 48 is relaxed. The flycatcher will then be in the in Fig. 20 brought bias position shown by the hammer head 50 is pivoted into the chamber 51.

In the in Fig. 15 illustrated end position, which can be achieved due to incorrect operation, a driver 6 on the formed by the catch 46 Accumulating ramp be 47. This results in a pivoting of the latch 46. The pressure arm 39 deviates into a niche, wherein the hammer head 50 enters deeper into the chamber 51. The driver can completely overflow the pressure arm 39 until it abuts against the stop arm 38. According to the tensioned in this evasive movement, formed by the film hinge leaf spring 48 of the pressure arm 39 pivots back to its original position, so that the driver is properly between the pressure arm 39 and stop arm 38. If, starting from this state, the sliding door is opened, the sear 2 returns to the in Fig. 14 zurückgeschlagert shown catch position, wherein at the same time in the Fig. 19 explosively shown, formed by a roller spring 9 energy storage is stretched.

An inner end 9 "of the roller spring 9 inserts into a fastening slot 32 of a housing core part 10. An outer end 9 'is fastened to a holding body 27' of a ring wall body 27, on the cylindrical outer surface of which a pull cable is wound.

The Zugsseil attacks a slider 3. This slide is guided on the housing ribs and forms the same material from the boom 43, which forms a bearing eye 52 at its free end, in which the guide pin 13 of the sear 2 is rotatably mounted. On the side facing away from the boom 43, the slider 3 is integrally formed with a pneumatic cylinder 19, which is part of a pneumatic damper 8. The pneumatic cylinder 19 has an opening in which the head 21 of a piston is inserted. The piston rod 17 has at its end a holding plate 57, which rests in a groove 56 of the wall of the housing 1. Again, the head of the piston 21 has an overflow.

To emphasize in this embodiment, in addition to a slide 3 material integrally formed, W-shaped leaf spring 53. This forms a detent spring. It has two mutually remote detent recesses 54 and 55. In these locking recesses 54 and 55 is located in each one of the two operating positions of the locking pin 5. In the in Fig. 17 In the other operating position, in particular the in. In the other operating position, in particular the in Fig. 16 heard end position heard, is the locking pin 5 in the remote from the slider 3 detent recess 54 a.

Claims (12)

1. A device for damped end closing of a movable part, in particular a sliding door, a drawer or another furniture component, the device comprising a slide (3) that is displaceably disposed in a housing (1) and has mounted on it a catching pawl (3), the slide being held in a capturing position by means of a latch (4, 5) in order to capture a drive member (6) which is associated with the movable part, and the slide being displaceable into an end position by the force of an energy storage mechanism (7), damped by a damping member (8), when the latch (4, 5) is released, characterized in that the energy storage mechanism (7) has a scroll spring (9) which is mounted by an energy storage mechanism housing that has a core part (10) which is fixedly connected to the housing (1) and a sleeve part (11) which is rotatably mounted on the core part, the slide (3) being connected to the energy storage mechanism (7) by a pull wire (12) that is wound up on the sleeve part (11).
2. A device according to Claim 1, characterized in that the core part (10) is secured to the housing (1) by a mounting tongue (33).
3. A device according to either of the preceding claims, characterized in that the sleeve part (11) is cup-shaped and has a bearing collar (35) that adjoins a bearing opening (30) in the cup-base (29), the collar (35) being enclosed in a bearing groove formed by a bearing collar (34) of the core part (10).
4. A device according to any of the preceding claims, characterized in that the scroll spring (9) is held by a first hook end (9") in a securing slot (32) of a bearing pin (31) of the core part (10) and by a second end (9') in a securing slot (26) of an annular wall (27, 27') of the sleeve part (11) .
5. A device according to any of the preceding claims, characterized by circumferential webs (28, 29') located on the periphery of the sleeve part (11).
6. A device according to any of the preceding claims, characterized in that the slide (3) is displaceably mounted on one or more guide ribs (15) of a housing part (1', 1") by means of a guide groove (16).
7. A device according to any of the preceding claims, characterized in that a pneumatic damper (8) forming the damping member has a cylinder (19), in which there is disposed a piston (21) that is secured to the end of a piston rod (17).
8. A device according to Claim 7, characterized in that the cylinder (19) is located between two retaining walls (24, 25) of the slide (3) and the piston rod (17) is secured to the housing (1).
9. A device according to any of the preceding claims, characterized in that the capturing pawl (2) has a pressure flank (39), which is formed by a latch member (46).
10. A device according to Claim 9, characterized in that the latch member (46) has a spring which is formed by a film hinge (48) and is held in a preloaded position by means of a pull rod (49).
11. A device according to any of Claims 7 to 10, characterized in that the cylinder (19) and the slide (3) form a single integral unit.
12. A device according to any of the preceding claims, characterized by a latch spring (53), which is formed on the slide, for the purpose of fixing a latching pin (5) of the capturing pawl (2) in a respective one of two latching positions (54, 55).

Images