EP0052283A2 - Hinge arm with mounting plate - Google Patents

Abstract

A hinge arm with mounting plate is provided with a guide for pushing on the hinge arm in the axial direction and a bore in which a protruding and secured by at least one stop located in the wall against falling out against spring force is guided longitudinally. When the hinge arm is pushed on, the locking pin is pressed in by an inclined surface arranged thereon and held in a pressed-in position by a wall of the pushed-over hinge arm until it snaps into a latching opening located in the hinge arm for releasable fixing. In order to ensure a secure connection and simple assembly, the locking pin (6) can be locked in two end positions of different heights by means of a ballpoint pen mechanism and can be transferred from one end position to the other by pressing it into the bore (5) and then relieving it. The top of the locking pin (6) is in the lower end position at the level of the path of movement of the inclined surface (29). After pressing through the inclined surface (29), the locking pin (6) snaps into the locking opening (28) in which it is acted upon by the spring (8) in the direction of its higher end position.

Description

The invention relates to a hinge arm with a mounting plate, which is provided with a guide for pushing on the hinge arm in the axial direction and a bore in which a protruding and secured by at least one stop located in the wall against falling out against spring force is guided longitudinally. which, when the hinge arm is pushed open, can be pressed in by an inclined surface arranged on it and is held in a pressed-in position by a wall of the pushed-over hinge arm until it snaps into a latching opening located in the hinge arm for releasable fixing thereof.

Snap connections for attaching hinge arms to mounting plates which have already been preassembled, for example, on supporting wall abutment parts are already known in various embodiments. They serve the need to be able to assemble furniture parts provided with hinge joints quickly and easily. Usually, it is necessary to screw the hinge arms onto the associated mounting plates, which is simple work, but, for example in the case of doors provided with a plurality of hinge joints, nevertheless requires a cumulative expenditure of time. It should also be taken into account that the hinge arms usually have to be screwed on while holding the door at the same time, which makes the installation work more difficult. Hinge arms locked by snap connections with the mounting plates help here.

In a known from DE-OS 25 12 656 fastening device for hinge arms of the type mentioned, a sleeve-shaped, the fastening plate-forming receiving part is connected to the supporting wall stop part, which is provided with guides for the hinge arm to be inserted, the hinge arm or the sleeve-shaped receiving part with latching openings in one part and spring-loaded locking pins are provided in the other part, which fall into the locking opening when passing over it. To push in the locking pins when inserting the hinge arms into the receiving part, wedge-shaped inclined surfaces are provided, but they can only be pushed over the upper sides of the locking pins if they do not protrude beyond the inclined surfaces. The locking pins can therefore only protrude their guide bores by an amount that is in the area of the inclined surfaces when inserted and which may be sufficient fixing of the hinge arm on the mounting plate after the snap Locking pins in the locking openings are not guaranteed. If the locking pins protrude their guide holes by a larger amount, they have to be pressed in so far when pushing the hinge arms onto the mounting plate that they reach the area of the inclined surfaces, which, however, complicates the assembly again.

The object of the invention is therefore to provide a snap connection for a hinge arm with a mounting plate which on the one hand is easy to manufacture and on the other hand ensures a secure connection of the two parts.

According to the invention, this object is achieved with a hinge arm of the type specified at the outset in that the pin is locked in two end positions of different heights by means of a ballpoint pen mechanism and can be transferred from one end position to the other by pressing into the bore and subsequent relieving, and in that the top of the pin _; is in the lower end position at the level of the movement path of the inclined surface and the pin snaps into the latching opening after being pressed through the inclined surface, in which it is acted upon by the spring in the direction of its higher end position. The use of the ballpoint pen mechanism according to the invention ensures that the pin for mounting the hinge arm is in its lower end position, in which it is certainly grasped by the wedge-shaped inclined surface, pressed in and prepared in such a way that it springs out when the latching opening is passed into the higher end position can. In the snap connection according to the invention for the hinge arm with the fastening plate, the locking pin thus has two end positions, namely a first lower position, in which it can be inserted without complicated manipulations, and a higher one, which ensures a sufficiently deep engagement in the latching opening.

In a further embodiment of the invention it is provided that the displacement of the hinge arm in the guide of the mounting plate is limited by at least one stop and the pin has a bevelled, frustoconical or rounded head with which the pin, which has not yet been pressed into its higher end position, has such a shape is supported on an edge region of the latching opening in such a way that it holds the hinge arm free of play against the stop of the fastening plate with a counter stop. The snap connection known from DE-OS 25 12 656 has the disadvantage that play of the locking pins in the locking openings cannot be avoided in principle, so that a disturbing wobble of the parts connected by the hinge joints can occur. This wobbling is avoided in this embodiment of the application according to the invention in that the locking pin constantly exerts a push on the edge region of the locking opening, so that the hinge arm and the mounting plate are clamped together without play. Of course, the rounded or beveled parts of the locking pin are to be designed so that they cannot fully immerse in the locking opening and constantly exert a push on the locking opening.

According to a further preferred embodiment of the invention it is provided that an adjusting screw serving for joint adjustment is screwed into the hinge arm, which is provided with an annular groove, is guided in the slot-shaped guide of the fastening plate and with the flanks of the annular groove the upper and lower edges of the Leadership overlaps. In order to be able to simply insert the groove in the adjusting screw into the slot guide, it is expediently open on one side.

The guide in the mounting plate expediently consists of longitudinal grooves arranged on both sides thereof, into which the expediently U-shaped hinge arm engages with sliding edges which are angled inward from the ends of its legs.

The stops and counter-stops serving for tensioning can be formed by the groove ends and the front edges of the sliding edges.

According to a further inventive embodiment, it is provided that the sliding edges are guided with play in the grooves and the end regions of the grooves are inclined upwards or downwards to compensate for play. If the sliding edges move into the angled or curved end region of the grooves, they abut the groove flanks, since they are straight, so that any play is compensated for by the resulting tilting.

• Fig. 1 einen Längsschnitt durch eine Befestigungsplatte,
• _Fig. 2 eine Vorderansicht der Befestigungsplatte nach Fig. 1,
• Fig. 3 eine Draufsicht auf die Befestigungsplatte nach Fig. 1,
• Fig. 4 eine Vorderansicht des mit der Befestigungsplatte verrastbaren Scharnierarms,
• Fig. 5 einen Längsschnitt durch den Scharnierarm nach Fig. 4,
• Fig. 6 eine Draufsicht auf den Scharnierarm - nach Fig. 5,
• Fig. 7 eine Seitenansicht der Befestigungsplatte mit teilweise aufgeschobenem Scharnierarm in einem seitlichen Längsschnitt, dessen Schrägfläche noch vor dem in seiner unteren Endstellung befindlichen Raststift liegt,
• Fig. 8 eine der Fig. 7 entsprechende Darstellung mit von dem mit der Schrägfläche versehenen Nocken eingedrückten Raststift,
• Fig. 9 eine den Fig. 7 und 8 entsprechende Darstellung des Scharnierarms und der Befestigungsplatte in ihrer miteinander verrasteten Stellung,
• Fig. 10 einen Schnitt entlang der Linie X - X der Fig. 11 durch den mit der Bohrung für den Raststift versehenen Teil der Befestigungsplatte in Höhe der mit den Führungsrippen der Druckkugelschreibermechanik versehenen Wandung,
• Fig. 11 einen Längsschnitt durch die Bohrung längs der Linie XI - XI in Fig.- 10,
• Fig. 12 eine Seitenansicht des Druckstücks der Druckkugelschreibermechanik,
• Fig. 13 eine Unteransicht des Raststifts,
• Fig. 14 eine Draufsicht auf das Druckstück nach Fig. 12,
• Fig. 15 eine Seitenansicht des Raststifts nach Fig. 13, und
• Fig. 16 bis 18 Abwickelungen der mit Rippen versehenen Wandung der Bohrung sowie der seitlichen Profile des Druckstücks und des Raststifts in der unteren und in der oberen Endstellung des Raststifts.

An embodiment of the invention is explained below with reference to the drawing. In this shows

• 1 is a longitudinal section through a mounting plate,
• _F ig. 2 shows a front view of the fastening plate according to FIG. 1,
• 3 is a plan view of the mounting plate of FIG. 1,
• 4 is a front view of the hinge arm which can be locked with the fastening plate,
• 5 shows a longitudinal section through the hinge arm according to FIG. 4,
• 6 is a plan view of the hinge arm - according to FIG. 5,
• 7 is a side view of the mounting plate with the hinge arm partially pushed open in a lateral longitudinal section, the inclined surface of which is still in front of the locking pin located in its lower end position,
• 8 shows a representation corresponding to FIG. 7 with the locking pin pressed in by the cam provided with the inclined surface,
• 9 shows a representation of the hinge arm and the fastening plate corresponding to FIGS. 7 and 8 in their latched position,
• 10 shows a section along the line X-X of FIG. 11 through the part of the fastening plate provided with the bore for the locking pin at the level of the wall provided with the guide ribs of the ballpoint pen mechanism,
• 11 is a longitudinal section through the bore along the line XI - XI in Fig. 10,
• 12 is a side view of the pressure piece of the ballpoint pen mechanism,
• 13 is a bottom view of the locking pin,
• 14 is a plan view of the pressure piece of FIG. 12,
• Fig. 15 is a side view of the locking pin according to Fig. 13, and
• Fig. 16 to 18 developments of the ribbed wall of the bore and the lateral profiles of the pressure piece and the locking pin in the lower and in the upper end position of the locking pin.

The mounting plate 1 has an essentially cuboid shape and is provided with holes 3, 4 for mounting screws in the region of its rear and front end.

In its central region, the mounting plate 1 has a bore 5 in which the locking pin 6 is guided so as to be longitudinally displaceable. The locking pin 6 has at its lower end a profile described in more detail below, which belongs to a ballpoint pen mechanism. This profiling interacts with bevelled ribs of a pressure piece 7 which is loaded in the direction of the locking pin 6 by a pressure spring 8. This compression spring 8 is supported with its lower end on a transverse pin 9 passing through the bore 5 and with its upper end. End on the pressure piece 7. The inner wall of the bore 5 is also provided with a rib-shaped profile which, together with the profile of the locking pin 6 and the pressure piece 7, forms the ballpoint pen mechanism described in more detail below. The one at the lower end of the locking pin Profiling has a larger diameter than the locking pin itself, so that these paragraphs are formed, which cooperate with an annular paragraph in the upper region of the bore 5, which forms a stop and thus determines the upper position of the locking pin 6 and prevents this falls out of hole 5. Because of the mechanical ballpoint pen mechanism, the locking pin 6 can be set to a lower and a higher end position by pressing it in.

The mounting plate 1 is provided with lateral groove-shaped guides 11, 12 for the sliding webs 13, 14 of the hinge arm 16. The front regions 17 of the guides 11, 12 are angled slightly upwards in the manner shown in FIGS. 7 to 9.

The fastening plate 1 is provided in the area of the upper side of its rear end with a cross-sectionally T-shaped recess which is open towards the end of the fastening plate and rounded at its front closed end. This recess forms a guide for the adjusting screw 20 provided with / an annular groove 19, which is screwed into the hinge arm 16. The edge strips 21 partially covering the recess 18, the inner sides of which delimit guide grooves with the base of the recess, are chamfered at the end in the manner shown in FIG. 1 in order to facilitate the insertion of the T-shaped guide piece 22 of the adjusting screw 20.

The hinge arm 16, as can be seen in particular from FIG. 4, has a U-shaped cross section. It consists of lateral legs 23, 24 which are connected to one another by the central web part 25. In the front area of the hinge arm 16 are from the side legs 23, 24th the edges forming the sliding webs 13, 14 angled inwards. A bore 26 provided with a collar, into which a nut ^thread for the fastening ^{screw 20 is} cut, is punched ^into the web part 15.

In the front area of the hinge arm 16, a cross-sectionally V-shaped cam 27 is embossed in its web part 25 in the manner shown in FIGS. 4 to 6. Seen from the underside of the hinge arm 16, the cam 28 is chamfered on both sides like a roof. Immediately behind the cam 18, the web part 25 is provided with a bore 28 which forms the locking opening He the locking pin 6.

For connecting the hinge arm 16 to the mounting plate 1 is _d r hinge arm with its sliding webs 13, ig from the _F in the fourteenth 7 to 9 clearly inserted into the guide grooves 11, 12 of the mounting plate 1. In order to prevent the front edge of the web part 25 from pushing against the locking pin 6 when it is pushed on, it is pressed into its lower end position shown in FIG. 7, in which the top of the locking pin 6 lies below the web part 2 $, due to the ballpoint pen mechanism. When the hinge arm 16 is pushed further, the cam 27 moves over the locking pin 6 and presses the locking pin 6 with its front inclined surface 29 in the manner shown in FIG. 8. If the cam 27 releases the locking pin 6 again by pushing the hinge arm 16 further, it can spring into its upper end position. If the detent opening 2-8 runs over the detent pin 6, it snaps into its upper arresting end position when the detent opening and the detent bore are aligned.

When the hinge arm 16 is pushed onto the fastening plate 1, the T-shaped guide piece 22 of the adjusting screw 20 also runs into the correspondingly T-shaped guide groove 18 the mounting plate 1 a. Since the T-shaped guide piece B2 is held longitudinally displaceably in the guide groove 18, but immovably in the axial direction, the height of the hinge arm can be adjusted by the adjusting screw 20.

The guide grooves 11, 12 of the mounting plate 1 have front stops 30, against which the front sides of the sliding webs 13, 14 abut in the latched position shown in FIG. 9.

The sliding webs 13, 14 are guided in the guide grooves 11, 12 with a slight play. Since the front region 17 of the guide grooves 11, 12 is angled slightly upwards, the sliding webs 11, 12 are tilted and slightly deformed in this region 17, so that they are held in the grooves without play in the locked position.

To release the latched position of hinge arm and mounting plate shown in FIG. 9, the locking pin 6 must be pressed in the direction of arrow A, so that it is locked in its lower end position due to the ballpoint pen mechanism, in which the top of the locking pin 6 below the web part 25 lies. The hinge arm 16 can then be easily removed from the mounting plate because the cam 27 presses the locking pin 6 with its rear oblique surface 31.

The ballpoint pen mechanism is explained in more detail below with reference to FIGS. 10 to 18.

The wall of the bore 5 is provided in the manner shown in FIGS. 10 and 11 at the same distance from one another with six axially extending guide ribs 32. The leadership Ribs 32 have a crown-shaped profile, the end faces of the ribs, which are beveled in the same direction, point in the direction of the abutment 9 of the compression spring 8. The ribs 32 delimit alternately grooves 33 and 34. The grooves 33 have a greater depth over their entire length, the groove bases of which correspond to the radius of the bore 5. Adjacent to the grooves 33, the diameter of the bore decreases towards the top. The radius of this smaller diameter coincides with the radius of the tops of the ribs 32.

The grooves 34 are stepped in depth. They have an inlet area 34 ', the depth of which corresponds to the depth of the grooves 33. A region 34 ″ adjoins the region 34 ′ with a smaller depth.

The locking pin 6 shown in FIGS. 13 and 15 has a central, non-continuous bore 35, the edge of which is provided with a crown-shaped profile. The profiling consists of six guide pieces 36, the diameter of which extends beyond the locking pin 6 and the width of the width of the grooves! 33, 34 corresponds. The guide pieces 36 have stepped and stops 37 forming rear sides. The guide pieces 36 are guided in the grooves 33, 34. The height of the guide pieces 36 is dimensioned such that they can also pass through the area of the grooves 34 with a smaller depth until their rear sides 37 abut the boundary walls 38 of the grooves 33, 34.

The pressure piece 7 shown in FIGS. 12 and 14 is cylindrical and has such a large diameter that it can be inserted into the bore 35 of the locking pin 6, but without being supported on the bottom of the bore. The pressure piece 7 has evenly over its circumference distributes three radially outwardly projecting guide pieces 39. The guide pieces 39 have beveled end faces 40 which are beveled in opposite directions to the end faces 41 of the guide ribs 32. The guide pieces 39 have a height that they can slide over the bottom of the grooves 33 and in the grooves 34 only in the lower region 34 '. If the guide pieces 39 are thus in the grooves 34, they abut against the step formed between the regions 34 'and 34 ".

The edge of the bore of the locking pin 6 is chamfered in a zigzag line, two opposing inclined surfaces 42, 43 each colliding on the center lines of the guide pieces 36. The helix angles of the beveled surfaces 42, 43 correspond to / those of the bevel surfaces 41, 40.

The function of the ballpoint pen mechanism will now be explained in more detail with reference to FIGS. 16 to 18. In these figures, the development of the guide ribs of the bore 5 is shown by lines not particularly marked. The zigzag line provided with short lines represents the development of the crown-shaped edge of the locking pin 6. The cut guide pieces 39 of the pressure piece 7 are shown hatched.

16 shows the ballpoint pen mechanism in the upper end position of the locking pin 6. In this, the spring-loaded pressure piece 7 is supported with its guide pieces 39 on the right inclined surfaces of the edge of the locking step Mastst LES 6 and presses this with the rear sides 37 of its guide pieces 36 against the stops 38.

If pressure on the locking pin 6 is now exerted in the axial direction in the manner shown in FIG. 17, then this pushes the pressure piece in the grooves 33 back against the force of the spring 8 until the front edges of the guide pieces 39 have passed the front edges of the ribs 32. As soon as the guide pieces 39 have come free from the grooves 33 in this way, the inclined surfaces 40 slide on the inclined surfaces 42 of the guide pieces 36 of the locking pin 6 until the front edges of the guide pieces 39 abut the oppositely curved inclined surfaces 43. When the inclined surfaces slide off one another, the pressure piece 7 rotates. If the locking pin is now relieved again, the inclined surface 40 slides on the inclined surface 41 of the guide ribs 32 until the guide pieces 39 fall into the grooves 34. In these, however, they are only able to advance the guide pieces 36 of the locking pin 6 until the front edges of the guide pieces 39 abut the step which is formed between the regions of different depths 34 'and 34 ".

This position of the locking pin or the pressure piece 7 can be seen in FIG. 18.

Claims (8)

1.Hinge arm with mounting plate, which is provided with a guide for pushing the hinge arm in the axial direction and a bore in which this is superior and secured by at least one stop located in its wall against falling out against spring force, which is guided at the Pushing on the hinge arm can be pressed in by an inclined surface arranged thereon and is held in a pressed-in position by a wall of the pushed-over hinge arm until it snaps into a latching opening located in it for the releasable fixing of the hinge arm, characterized in that the latching pin (6) by a ballpoint pen mechanism can be locked in two end positions of different heights and by pressing into the bore (5) and the following Relieve of. one end position can be transferred to the other and that the top of the locking pin (6) lies in the lower end position at the level of the path of movement of the inclined surface (29) and the locking pin (6) after being pressed through the inclined surface (29) into the locking opening (28 ) snaps, in which it is acted upon by the spring (8) in the direction of its higher end position. 2. Hinge arm according to claim 1, characterized in that the inclined surface (29) is formed by a roof-like chamfered cam (27) on both sides. 3. Hinge arm according to claim 1 or 2, characterized in that the displacement of the hinge arm (16) in the guide of the mounting plate (1) by at least one stop (30) and the locking pin (6) has a bevelled, frustoconical or rounded head , with which the not yet spring-loaded locking pin is supported on an edge area of the locking opening (28) in such a way that it holds the hinge arm (16) with a counter-stop without play against the stop (30) of the fastening plate (1). 4. Hinge arm according to one of claims 1 to 3, characterized in that in the hinge arm (16) one of the joint adjustment serving screw (20) is screwed, which is provided with an annular groove (19), in this in an elongated guide (18) the mounting plate (1) and with the flanks of the annular groove (19) overlaps the upper and lower edges of the guide (18). 5. Hinge arm according to claim 4, characterized in that the slot guide (18) is open on one side. 6. Hinge arm according to one of claims 1 to 5, characterized in that the guide in the mounting plate (1) from both sides of this arranged longitudinal grooves (11, 12), in which the cross-sectionally U-shaped hinge arm (16) with Sliding webs (13, 14) which are angled inwards from the ends of its legs (23, 24). 7. Hinge arm according to one of claims 1 to 6, characterized in that the stop (30) through the groove ends and the counter-stops are formed by the end faces of the sliding webs (11, 12). 8. Hinge arm according to one of claims 1 to 7, characterized in that the sliding webs (13, 14) with play in the grooves (11, 12) and the end regions (17) of the grooves (11, 12) to compensate for play. or are sloping down.

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