Abstract:
A mounting plate is provided for a linear damper with a cylinder, a piston, and a piston rod. The cylinder of the linear damper is held between holding jaws of the mounting plate. The holding jaws of the mounting plate form a movable bearing in which the cylinder is axially displaceable. A stop is provided, which is made at least partially of a material with rubber elastic properties, which strikes against the cylinder of the linear damper during damping.

Description:
BACKGROUND OF THE INVENTION 
     The invention relates to a mounting plate for a linear damper having a cylinder, a piston and a piston rod, and the cylinder of the linear damper is held between holding jaws of the mounting plate. Further, the invention relates to a damper arrangement and a pull-out guide for drawers or similar with a drawer rail fitted to the drawer and a mounting rail fitted to a body of furniture, whereby a linear damper with a cylinder having a movable piston therein is arranged on one of the rails, and the damper brakes the drawer rail. 
     The object of the invention is to achieve optimal anchoring of the linear damper on one of the rails of the pull-out guide fitting, and to allow the simple exchange of a defective linear damper. 
     SUMMARY OF THE INVENTION 
     According to the invention, this object is achieved in that the holding jaws of the mounting plate form a loose bearing in which the cylinder is axially displaceable. 
     Advantageously, the mounting plate, which is rectangular in top view, may have lateral grooves and a frontally projecting hook, and preferably the mounting rail has a ridge with a longitudinal slot. The mounting plate is inserted in the longitudinal slot in such a way that the lateral edges of the slot project into the lateral grooves of the mounting plate and the hook on the front end of the mounting plate snaps in a recess of the ridge, the recess being provided on the front face of the longitudinal slot and at a distance therefrom. 
     With the mounting plate according to the invention, the linear damper can simply be pressed between the holding jaws and is thus immediately functional. No tools are needed to press in the linear damper or to dismantle the linear damper. 
     The cylinder of the linear damper is held resiliently or spring-clamped by the holding jaws. It is held captive in the mounting plate, but can be axially displaced in the mounting plate during the damping process. 
     A further object of the invention is to improve the damping effect. 
     This object is achieved in a damper arrangement for movable parts of furniture including a damper with a movable damper part and a stop which is movable relative to the damper, and the stop impacts on the moving damper part during the damping process and thus effects the damping. This damper arrangement is particularly for use with a mounting plate as described above because the stop consists at least partially of a material with rubber elastic properties. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       In the following, an embodiment of the invention will be described in more detail with reference to the accompanying drawings, in which: 
         FIG. 1  is a diagram of a pull-out device according to the invention, 
         FIG. 2  is a diagram of a mounting rail of a mounting plate according to the invention, and of a linear damper, whereby the parts are drawn pulled apart; 
         FIG. 3  is a top view of a pull-out device according to the invention, 
         FIG. 4  is the sectional view along line B-B of  FIG. 3 , 
         FIG. 5  is a diagram of a mounting rail and a mounting plate mounted thereon, 
         FIG. 6  is a vertically-aligned longitudinal sectional view through the mounting rail in the area of the mounting plate, 
         FIG. 7  is a top view of a pull-out device according to the invention in the pushed-in position, 
         FIG. 8  is a top view of a pull-out device according to the invention in the pulled-out position, 
         FIG. 9   a  is a schematically contrasted top view of a pull-out device according to the invention at the end of the damping path, 
         FIG. 9   b ,  9   c  are top views of the damper and the stop on the drawer rail during damping, 
         FIG. 9   d  is a top view of the damper and the stop on the drawer, with the damper shown in the ready position, 
         FIG. 10  is a top view of the mounting rail without a mounting plate, 
         FIG. 11  is a top view of the mounting rail with mounting plate fitted, 
         FIG. 12  is a bottom view of the mounting rail without a mounting plate, 
         FIG. 13  is a bottom view of the mounting rail with the mounting plate fitted, and 
         FIG. 14  is a diagram of the frontal area of the drawer rail with the stop. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     There is a pull-out guide consisting of a mounting rail  1  and a drawer rail  2  on each side of the drawer. The load of the drawer rail  2  on the mounting rail  1  is transferred via rollers which are mounted on the rails  1 ,  2  or in carriages, which run differentially between the rails  1 ,  2 . A linear damper  3  can be provided on both sides of the drawer or on one side only. It is an essential advantage of the invention that one of the rails  1 ,  2  (in this case, the mounting rail  1 ) can be quickly and easily fitted with a linear damper  3 . The linear damper  3  is accepted into a mounting plate  4  which is anchored in the horizontal ridge  1 ′ of the mounting rail  1 . The horizontal ridge  1 ′ has a longitudinal slot  5 , in which the mounting plate  4  is inserted. At one front (first) end of the longitudinal slot  5  there is a slot-shaped recess  6 , which is aligned at a right angle to the longitudinal slot  5 . 
     At the second end opposite the recess  6 , the longitudinal slot  5  is provided with an extension  7 . 
     The mounting plate  4  has lateral ridges  8  at one end (a second end) which delimit grooves  9 . At the other (first) end, the mounting plate  4  is provided with a hook  10 . The mounting plate  4  with the hook  10  is made from plastic, and the hook  10  is designed to be elastic. 
     To fit the mounting plate  4  on the mounting rail  1 , the mounting plate  4  is inserted in the slot  5  in such a way that it lies with its support edges  11  on the slot edges  12 , and so that the ridges  8  are disposed in the area of the extension  7 . After that, the mounting plate  4  is displaced until the hook  10  snaps into the recess  6 . In this position, the edges  12  of the longitudinal slot  5  engage the grooves  9  on the opposite (second) end of the mounting plate  4 . 
     The mounting plate  4  has a trough-shaped area (trough-shaped section)  14  and a front wall  13 . In the middle of the trough-shaped area, the mounting plate  4  is provided with two holding jaws  15 , which in the embodiment shown are moulded out of plastic in a single piece with the mounting plate  4 . The linear damper  3  is inserted into the trough-shaped area  14  of the mounting plate  4  in such a way that it is clipped, with its cylinder  16 , between the holding jaws  15 . The trough-shaped area  14  extends over 160° to 180° of the perimeter of the cylinder, and extends along substantially the entire length of the linear damper  3  as illustrated in  FIGS. 2 and 7  through  9 . The piston rod  17  thereby strikes against the front plate  13  of the mounting plate  4 . 
     The holding jaws  15  form a loose bearing for the cylinder  16  of the linear damper  3  (i.e., although the cylinder  16  is anchored on the mounting plate  4 , it can be displaced longitudinally). The holding jaws are shaped to encompass more than 180° of the perimeter of the cylinder; preferably between 190° and 260° of the perimeter; and more preferably between 200° and 230°. As shown in  FIGS. 2 and 4 , the holding jaws  15  extend from the edges of the mounting plate  4  so that the inside surface of the trough-shaped area  14  and jaws  15  has a uniform radius (see  FIG. 4 ) to allow the cylinder  16  to smoothly move in an axial direction along mounting plate  4 . 
     As shown in  FIG. 14 , the pull-out (drawer) rail  2  has a laterally-projecting tab  18  which is provided with a cap  19  made of plastic. The tab  18  and the cap  19  form a stop  21  for the linear damper  3 . The cap  19  is designed as a two-component moulded part with a harder area  19 ′, which is slid directly onto the tab  18 , and a softer area  19 ″ having rubber elastic properties, on which the cylinder  16  of the linear damper  3  impacts laterally when the drawer closes. 
     When the pull-out rail  2  is brought into the rear closed position, the stop  21  with the cap  19  impacts at the door side on the cylinder  16  of the linear damper  3 , and the cylinder  16  is pushed backwards (see  FIG. 9A ). The piston rod  17  then rests upon the front wall  13  and thus there is a relative movement between the piston, which is inside the cylinder  16 , and the cylinder  16 . The linear damper  3  is preferably designed as a fluid damper. The fluid can be either a gas or air or a liquid. 
     In the cylinder  16 , there is a return spring. 
     If the drawer is opened, i.e. the drawer rail  2  is drawn to the right according to  FIG. 1 , then the return spring forces the cylinder  16  into the initial position, until its lateral stops  20  abut against the leading edges of the holding jaws  15 . The linear damper  3  is then back in the ready position (see  FIGS. 9B-9D ). 
     Next to the mounting plate  4  and the linear damper  3 , there is disposed a retraction guide  22  which draws the drawer rail  2  into the final closed position. This type of retraction device is described, for example, in the German utility model DE 91 14 787 U by the applicant. The spring of the retraction device must in that case be strong enough to move against the resistance of the return spring and of the damping fluid when the cylinder  16  closes.