ES2704640T3 - Furniture hinge - Google Patents

Abstract

Furniture hinge (1 ') with a mounting plate (2), on which a side part (3') is fixed, and with a pivotable hinge part (4) relative to the side part 3 'between a position open and a closed position, which is articulated by means of a support lever (5) and a guide lever (6) as a parallel rod, in which for the damping of movement between the side part (3 ' ) and the hinge part (4) is provided with a shock absorber configured as a linear shock absorber with a housing (11 ') and with a piston rod (12') on the side part (3 '), in which a lever is provided of articulation (13 ') rotatably housed in the lateral part (2), which, on the one hand, is coupled with the damper (11', 12 ') and, on the other hand, with a linkage (18), and the shock absorber (11 ', 12') is coupled on one side on the articulation lever (13 ') and is housed on the opposite side pivotably on the side part (3'), ca characterized in that the shock absorber (11 ', 12') is only active in an angular area less than 45 ° in front of the closed position of the hinge part (4), in which the linkage (18) is articulated in the lever of support (5) directed towards the hinge part (4) next to the axis of the support lever which is arranged on the side part (3 '), so that in the case of an articulation of the hinge part ( 4) at a very open position, hardly any movement of the linkage shaft (18) takes place.

Description

DESCRIPTION

Furniture hinge

The present invention relates to a furniture hinge according to the preamble of claim 1.

The document CN 2809138Y publishes a hinge with a hydraulic shock absorber with the characteristics of the preamble of claim 1.

It is known from document EP 1555372 a furniture hinge, in which a part of the hinge is fixed by means of two levers pivotably on a side part. In the hinge part a damper with an axially movable piston rod is fixed, which extends during the closing of the hinge part. For this purpose, a chain link is mounted on a projection of a lever, so that during a pivoting movement of the lever, the chain link is pivoted and the piston rod extends out of the damper housing. In this construction, it is a disadvantage that the damper is active over the entire articulation area of the lever and, therefore, dampening is already carried out even when a door of the furniture is open. In addition, the structure is comparatively expensive due to the coupling of the housing link and only a tolerance compensation due to the fixed turning axes is possible with limitations. A similar hinge is also shown in DE 202006001648 U1.

DE 202006003196 U1 not published previously publishes a furniture hinge with a mounting plate, on which is fixed on an intermediate piece a first part of the hinge, in which a second part of the hinge is housed pivotably on a support lever and a guide lever and is articulated of the type of a parallel connecting rod. A damper with a piston rod, which is movable along its longitudinal axis, is coupled to the guide lever.

US 4,449,269 discloses a furniture hinge, in which a brake cylinder is provided in a lateral part, which must stop the closing movement by means of friction forces. For this purpose, the brake cylinder is mounted displaceably on a piston rod and has a groove-like housing in which a lever arm fits.

Therefore, the purpose of the present invention is to create a furniture hinge, which is made simple and guarantees a damping only in a necessary hinge area. This task is solved with a furniture hinge with the features of claim 1 or claim 3. According to the invention, the damper is configured for the damping of movement between the side part and the hinge part, so that the damper is active only in an angular zone less than 45 ° in front of the closing position of the hinge part. in this way, it is prevented that a damping is also activated already in an open position of the part of the hinge or of the furniture door fixed therein, which prevents rather the manipulation. Since with the shock absorber, a knock closure of a furniture door must be avoided in particular, such that it is sufficient that the damper is active only in an angular area in front of the closed position of the hinge part. According to a preferred configuration of the invention, the damper is only active in an area between 20 ° and 40 ° in front of the closed position. In this way a sufficient damping path is still present, but manipulation in the open position of the furniture door is not prevented. According to the invention, an articulation lever housed rotatably on the side part is provided, which, on the other hand, is coupled, on the one hand, with the shock absorber and, on the other hand, with a linkage. A pivoting movement of the articulation lever is present on the side facing the shock absorber as well as on the linkage side via the rotatable housing of the joint lever. In this case, the linkage is rotatably housed in the support lever or in the guide lever, thereby achieving a compact structure. In this case, the linkage can be arranged between the axes of rotation of the support lever and of the guide lever on sides of the side part. According to a first variant of the invention, the linkage is articulated in the support lever directed towards the hinge part, adjacent to the axis of the support lever arranged on the side, so that in the case of a joint from the hinge part to a very open position, hardly any movement of the linkage shaft takes place. Only in the case of a closure of the hinge part does the articulation of the support lever take place, so that only then is the linkage moved in the same manner. In this case, the linkage can be articulated on the support lever, so that the axis of rotation is arranged closer to the axis towards the lateral part than from the axis towards the hinge part, for example one third of the length of the hinge. the distance between the axes of the support lever.

To avoid transverse forces on the piston rod, the damper according to a second variant of the invention can be coupled through a cam guide on the articulation lever and for the damping the piston rod can then be moved axially with the piston rod. relation to the housing. In this case, the cam guide can be configured in such a way that an elongated bore is formed in the articulation lever for coupling with the shock absorber, in which a pivot engages, which is connected to the piston rod or to the housing . Through the configuration of a guide of cams or of an elongated drill can be to fix in this case the point, from which the damper is active during a closing movement of the hinge part. With a corresponding configuration of the cam guide, the starting point at which the shock absorber is active during a closing movement can also be adjusted.

For a simple assembly, the shock absorber can be fixed on the side. In order to avoid transverse forces between the piston rod and the housing in the shock absorber, the shock absorber can also be retained on one side on the articulation lever and on the opposite side pivotably on the lateral part.

The invention is explained in detail below with the aid of two exemplary embodiments with reference to the accompanying drawings. In this case:

Figures 1A to 1C show different views in section through a furniture hinge according to the invention in different positions, and

Figures 2A to 2C show different views in section through a second embodiment of a furniture hinge according to the invention in different positions.

In figures 1A to 1C there is shown a metal and / or plastic furniture hinge 1, which has a mounting plate 2, which can be fixedly mounted on a furniture body. A side portion 3 is fixed to the mounting plate 2 in a fixed manner or on an adjustment mechanism, in which a hinge part 4 in the form of a cup is pivotably mounted. The hinge part 4 can be connected to a furniture door or to another component.

For the articulation of the hinge part 4, a support lever 5 is provided which is directed towards the hinge part 4 and a guide lever 6 arranged adjacently, so that the support lever 5 is articulated on an axis 7 in the part of the hinge part 4. hinge 4 and on an axis 8 in the side part 3. The guide lever 6 is hinged on an axis 9 in the hinge part 9 and an axis 10 in the side part 3. In this way, the part of the hinge part can be moved. hinge 4 on a predetermined articulation path relative to the lateral part 3, so that the support lever 5 and the guide lever 6 form a parallel connecting rod.

For the damping of the movement of the hinge part 4 on a part of the articulation area, a damper is provided, which has a housing 11 and a piston rod 12 displaceable relative to the housing 11. The damper is designed as a shock absorber linear and can be, for example, a fluid absorber or a compressed gas absorber.

The shock absorber is connected to the piston rod 12 with an articulation lever 13, which is mounted on the side part 3 pivotably around an axis 14. In the articulation lever 13, an axle 17 is additionally configured, the one that is articulated a linkage 18 or a bar, which is fixed on the opposite side on an axis 19 in the support lever. The axle 19 is arranged in this case in a rib 20 of the support lever 5, which is arranged on the outer side of the support lever 5 towards the side of the hinge part 4. The axle 19 is arranged between the axle 7 and in the hinge part 4 and the axis 8 in the side part 3, so that the distance between the axis 19 and the axis 8 is shorter than the distance of the axis 7 and the axis 19. For example, the axis 19 can divide a connection line between axes 7 and 8 maybe by one third to two thirds.

In FIG. 1A the furniture hinge 1 is shown in an open position, in which the hinge part 4 is hinged in such a way that a furniture door is about 9 ° in an open position.

For a closing movement, the part of the hinge 4 is articulated, as shown in FIG. 1B. Through the articulation of the hinge part 4 the support lever 5 and the guide lever 6 are rotated, so that by virtue of the selection of the axes 7 to 10 the axis 19 hardly moves at the beginning of the movement closing. In Figure 1B, the part of the hinge is in front of the closed position, perhaps at an angle a of about 45 °. To this closed position, the damper is inactive, since the piston rod 12 has not yet moved relative to the housing 11.

If the part of the hinge 4 is now further articulated, the support lever 5 is rotated in the opposite clockwise direction and in this way the linkage 18 is moved in the direction of the articulation lever 13, which is now pivoted about the axis 14. First of all, the articulation lever 14 is moved in such a way that a pivot is guided on the shaft 15 in an elongated bore 16 in the articulation lever 13, until the pivot reaches the end of the elongated bore 16. Then, in the case of an additional movement of the hinge part 4, the linkage 18 and the articulation lever 13 are moved in such a way that the piston rod 12 is inserted into the housing 11.

In FIG. 1C, the closed position of the furniture hinge 1, in which the piston rod 12 is inserted in the housing 11, is shown. From this closed position, the housing part 4 can be pivoted back to a open position, in which the damper is either only active in an initial zone or only unilateral damping takes place, so that the opening process takes place to a large extent in an undamped manner. The part of the hinge 4 is prestressed in this case by means of a spring in the closed position. In the exemplary embodiment shown in FIGS. 1a to 1C, an elongated bore 16 is configured in the articulation lever 13 as a cam guide, in which the elongated bore 16 establishes the start of the activity of the shock absorber or the movement of the piston rod 12 relative to the housing 11. It is also possible to provide, in place of an elongated bore 16, another cam guide, in which, for example, the length of the displacement path can be adjusted in the case of a rotary movement of the link lever 13, so that the start of the activity of the shock absorber can also be adjusted.

In figures 1A to 2C there is shown another embodiment of a furniture hinge 1 'according to the invention, in which the same reference signs are provided for the same components as in the first example of embodiment. The furniture hinge 1 'comprises a mounting plate 2, which can be fixed to a furniture body 2, in which a side part 3' is provided or fixed. A linear damper with a housing 11 'and with a piston rod 12', in which a pivot axis 21 is provided, is mounted pivotably on the side part 3 '. The piston rod 12' is fixed on one side on an axis 15 'in an articulation lever 13, which is rotatably retained about an axis 14' in the lateral part 3 '. The articulation lever 13 'is connected via a linkage 18 again to the support lever 5, so that the connection with the hinge part 4 with the support lever 5 and the guide lever is configured as in FIG. previous embodiment.

If the part of the hinge 4 is now pivoted from a very open position (FIG. 2A) to a still only partially open position (FIG. 2B), which is approximately 45 [deg.] In front of the closed position, then by virtue of the articulation of the linkage 18 on the support lever 5, the articulation lever 13 does not move or only moves very little, which does not yet have repercussions on the shock absorber with the housing 11 'and the piston rod 12. Only in an area between 20 ° and 40 ° in front of the closed position, the linkage 18 is moved on the support lever 5 in such a way that the articulation lever 13 'is rotated and in this case the piston rod 12' is pressed into the inside the housing 11 ', so that in the frame of the rotary movement of the articulation lever 13' the housing 11 'pivots about the axis 21 to an insignificant extent, to avoid transverse forces.

The closed position is shown in Figure 2C. The piston rod 12 'is in the position inserted in the housing 11'.

In the illustrated embodiments, respectively, the piston rod 12 or 12 'is coupled with the joint lever 13, of course, in the same way it is possible to couple the housing 11 or 11' with the joint lever 13 and fix the piston rod 12 and 12 'on the side 3 and 3', respectively.

Claims (4)

1. - Furniture hinge (1 ') with a mounting plate (2), in which a side part (3') is fixed, and with a hinge part (4) pivotable relative to the side part 3 ' between an open position and a closed position, which is articulated by means of a support lever (5) and a guide lever (6) in the manner of a parallel connecting rod, in which to cushion the movement between the lateral part ( 3 ') and the hinge part (4) is provided with a damper configured as a linear damper with a housing (11') and with a piston rod (12 ') in the side part (3'), in which it is provided an articulation lever (13 ') rotatably housed in the side part (2), which, on the one hand, is coupled with the shock absorber (11', 12 ') and, on the other hand, with a linkage (18) , and the damper (11 ', 12') is coupled on one side to the joint lever (13 ') and is housed on the opposite side pivotably on the side part (3'), characterized in that the shock absorber (11 ', 12') is only active in an angular area less than 45 ° in front of the closed position of the hinge part (4), in which the linkage (18) is articulated on the lever of support (5) directed towards the part of the hinge (4) next to the axis of the support lever which is arranged on the side part (3 '), so that in the case of a hinge part hinge (4) to a very open position, hardly any movement of the linkage shaft (18) takes place. 2. - Furniture hinge according to claim 1, characterized in that the damper (11 ', 12') is active in an angular range of 20 ° to 40 ° and in the closed position of the hinge part (4) . 3. - Furniture hinge (1) with a mounting plate (2), in which a side part (3) is fixed, with a hinge part (4) pivotable with respect to the side part (3) between a open position and a closed position, which is articulated by means of a support lever (5) and a guide lever (6) in the manner of a parallel connecting rod, in which for the damping of movement between the side part (3) and the hinge part (4) is provided with a shock absorber configured as a linear damper with a housing (11) and a piston rod (12) on the side part (13), in which a joint lever (13) is provided. rotatably housed in the side part (2), which is coupled, on the one hand, with the shock absorber (11, 12) and, on the other hand, with a linkage (18), in which the linkage (18) is rotatably housed in the support lever (5) or in the guide lever (6), characterized in that the shock absorber (11, 12) is only active in a an angular zone of less than 45 ° in front of the closed position of the hinge part (4), in which the shock absorber (11, 12) is coupled by means of a guide d rises (16) in the articulation lever ( 13) and moves to dampen the piston rod (12) relative to the housing (11). 4. - Furniture hinge according to claim 3, characterized in that an elongated hole for coupling with the damper (11, 12) is configured as a cam guide (16) in the articulation lever (13).