EP1777363B1 - Stop device for a door of a housing - Google Patents

Description

The invention relates to a device for locking a door of a housing, in particular a control cabinet, with a housing body to which the door is hinged, wherein a clamping part of the locking device in the region between the housing body and the door can be introduced.

Such devices for locking a door are known from the general state of the art. For example, to keep a cabinet door in the open position, or to prevent the cabinet door is closed unintentionally, for example by a draft, you help yourself like a wedge or other suitable item. This is inserted into the gap defined by the door hinge between the door and the cabinet body. Thus, the object is trapped between the door and the cabinet body and effectively prevents the door from being closed. Alternatively, you can put a heavy object on the open door so that closing is prevented.

However, this solution has the disadvantage that you need to lock the door an additional object that may be lost under certain circumstances. In addition, these items are quite cumbersome to handle and their use often involves injury.

Furthermore, a locking device is known from the prior art, which is fixedly mounted between the door and the cabinet body. This locking device consists essentially of an elongated metal part, which is hinged to the upper part of the door via a pivot bearing. On the cabinet body, however, a guide for the metal part is provided. The metal part has a slot in which a guide pin is guided. By opening the door, the metal part is pulled out in the direction of the opening door, wherein the guided in the slot pin leads the movement of the metal part. Once the door is in its open position, the pin snaps into a groove in the slot, so that the door is held in the open position. The elongated metal part thus forms a support of the door relative to the cabinet body.

However, this known locking device is constructed relatively complicated and is not easy to handle especially when closing the door. In addition, the known locking device must be designed quite large building especially heavy doors doors to achieve the necessary stability. This in turn leads to an increased space requirement on the upper inside of the door or in the adjacent cabinet carcass area. When assembling this locking device a plurality of mounting holes must be drilled, which is particularly expensive to realize metal doors and drives the production costs in the air.

Other locking devices which have a clamping part which is rotatable via an eccentrically mounted axis of rotation in a locking position and a neutral position, are in US 2003/057711 . DE 24388 . DE 198 32 578 and DE 407 751 disclosed. US 2003/057711 is regarded as the closest prior art and shows all features of the preamble of claim 1.

It is therefore an object of the invention to provide a device for locking a door of a housing, which is particularly simple in construction and easy to handle is. In addition, the locking device according to the invention should require only a small footprint.

This object of the invention is achieved by a device according to the features of claim 1. Advantageous developments are each described in the subclaims.

Accordingly, the clamping part on the inside of the door about a perpendicular to the door extending, on the clamping part eccentrically mounted axis of rotation is arranged rotatably. In this case, the clamping part can be rotated into a locking position in which the clamping part protrudes over this with the door open and can be brought to the housing body to the plant. Due to the eccentrically arranged axis of rotation can be achieved with appropriate shaping of the clamping member that at least in the locking position, a part of the clamping member protrudes beyond the door. This projecting part of the clamping part can be introduced by a simple rotational movement in the area defined by the hinge between the door and the housing body, whereby a closing of the door is effectively prevented. The clamping part is thus clamped between the door and the housing body and thus keeps the door open.

In addition, the clamping part can be rotated in a neutral position. In this neutral position, the clamping part does not protrude beyond the door and can be accommodated within the housing body when the door is closed. The space requirement is relatively small, depending on the size of the clamping part, especially since no protruding attachments are necessary.

According to a preferred embodiment, the locking position is pivoted relative to the neutral position by 180 °. However, the two positions can also be pivoted against each other at a different angle. It is only ensure that in the locking position, the desired clamping action between the door and the housing body is given and in the neutral position, the door is to close.

The clamping part is connected to a holding device of the device, which holds the clamping part on the one hand in the locked position and the other in the neutral position. The holding device ensures that the two positions can be defined and defined.

The device has a guide web attached to the door, which engages in a recess formed on the clamping part. Such a holding device is very simple and also has sufficient reliability.

The axis of rotation is defined by a pin which is fixed at its one end to the guide bar. The pin extends through a mounted perpendicular to the recess and to the symmetry axis of the clamping member eccentrically arranged first through hole in the clamping part. This makes it easy to form the pivot bearing for the clamping part.

According to a preferred embodiment, the pin may have a head at the free end, which is opposite to the end fixed to the guide web, wherein between the head and the clamping part a compression spring is effective, which clamps the guide web in the recess. The compression spring may be formed in a particularly preferred embodiment by a spiral spring into which the pin is inserted.

Thus, the compression spring can be securely supported on the clamping part, can at the Compression spring facing side of the clamping member in the through hole to be formed a paragraph on which the coil spring is supported.

A particularly simple structure is achieved in that the pin is designed as a screw which engages in a threaded portion arranged on the guide web. The screw has the head required for the support of the coil spring and is particularly easy to attach to the guide bar.

According to a preferred embodiment, in particular for use in a control cabinet, the guide bar may be formed by a door-hole bar. Such door hole strips are provided in cabinet doors for the assembly of additional components.

So that the clamping member can be used in doors with right and left stop and at the top and bottom of a door can be provided in an advantageous manner that in the clamping part to the symmetry axis of the clamping member eccentrically arranged second through hole is mounted, which is parallel to the first Through hole and extending perpendicular to the recess. The second through hole reduces the production costs for differently oriented clamping parts.

In a particularly advantageous embodiment, a locking means can be effective between the clamping part and the housing body, which holds the door in the open position. The locking means may be formed on its housing body facing portion, for example, as a recess or projection or corresponding fixing, which automatically causes a fixation in the support position of the door to the relevant area of the housing body, so that the door in the pivoting position against an automatic free pivoting is secured to the outside. It can between the clamping part and the housing body a Schnapspalterung be formed, which causes an automatic fixation and securing the door.

According to a particularly simple embodiment, the clamping part may have a contact region, on which the clamping part comes into contact with the housing body when the door is open. In this case, a particularly secure fixing of the door in the open position is achieved in a simple manner in that the contact region of the clamping part has a trench-shaped recess, in which hineinerstreckt when the door is open a protruding on the housing body support member and supported against the clamping part. In this case, the support part form the frame part of the housing body to which at least one door hinge is attached.

The clamping member may be modified to be used in conjunction with different types of hinges. It can also be provided different clamping parts for different hinges. Therefore, the contact area of the clamping part or the locking means can be adapted to the particular door hinge used.

According to an alternative embodiment, the abutment region of the clamping part may have a step-shaped extension, on which a support part projecting on the housing body is supported when the door is open. This ensures that even a heavy door is held reliably and stably in the open position.

The invention will be explained in more detail below with reference to preferred embodiments with reference to the accompanying drawings.

Show it:

FIG. 1

a schematic partial view of an embodiment of the device for locking a door of a cabinet, wherein the clamping member is shown in the locked position;

FIG. 2

in a schematic partial view of the device according to FIG. 1 wherein the clamping member is shown in neutral position;

FIG. 3

in a schematic view and in section along the section line III-III of in FIG. 2 shown device for locking a door of a cabinet,

FIG. 4

in a schematic perspective partial view and in exploded view of a locking device, the embodiment according to the FIGS. 1 bis-3 is similar, wherein a state is shown, in which the clamping member is inserted in the locking position,

FIG. 5

in a schematic perspective partial view and in exploded view the in FIG. 4 shown embodiment of the locking device, wherein a state is shown, in which the clamping part is inserted in the neutral position and can be brought into the pivoted-locking position,

FIG. 6

in a schematic perspective partial view of another embodiment of the locking device, wherein a state is shown, in which a clamping member is inserted in the locking position and on the clamping part a protruding on the housing body support member can engage in a trench-shaped recess in the clamping part,

FIG. 7

in a schematic, partial perspective view and in exploded view the in FIG. 6 shown embodiment of the locking device, wherein a state is shown, in which the clamping part is inserted in the neutral position and can be brought into the pivoted-locking position,

FIG. 8

in a schematic perspective partial view and in exploded view yet another embodiment of the locking device, wherein a state is shown, in which a clamping part, which has a stepped extension, is inserted in the locking position, and

FIG. 9

in a schematic perspective partial view and in exploded view the in FIG. 8 shown embodiment of the locking device, wherein a state is shown, in which the clamping part is inserted in the neutral position and can be brought into the pivoted-locking position,

The Figures 1 and 2 show a schematic view of an embodiment of the device for locking a door 10 of a cabinet. The cabinet has a cabinet body 12, which is only partially shown. On the cabinet body 12, the door 10, which is also shown only partially hinged on pivot hinges 6 and 8 and shown in the open position. At the lower cabinet side edge of the door 10, a clamping member 14 is disposed in the region 16 between the housing body 12 and the door 10.

The clamping part 14 is in the FIG. 1 shown in locked position. In this case, the clamping member 14 stands with the door open 10 on this and extends into the area 16 between the cabinet body 12 and the door 10 into it. The clamping part comes on the housing body 12 to the plant. In the locked position, the clamping part 14 thus prevents the closing of the door.

The clamping member 14 is mounted on the inside of the door 10, and can be about a perpendicular to the door 10 extending, with respect to the plane of symmetry 28 of the clamping member 14 eccentrically arranged axis of rotation 18 in the direction of arrow A in the clockwise direction. If the clamping member is further rotated in the direction of arrow A, it enters the in FIG. 2 shown neutral position, which allows the door to close. In this case, the clamping part 14 does not protrude beyond the door 10 and can be received within the housing body 12 when the door 10 is closed. When the clamping member is pivoted back in the direction of arrow B counterclockwise, it returns to the in FIG. 1 shown locking position. The locking position is pivoted relative to the neutral position by 180 °.

FIG. 3 shows a schematic sectional view of the locking device according to the section line III-III in FIG. 2 , The clamping member 14 is connected to a holding device which holds the clamping member 14 on the one hand in the locking position and the other in the neutral position. The holding device has an attached to the door 10 guide web 20 which engages in a recess 22 which is formed on the door 10 facing the underside of the clamping member 14. The guide web 20 is formed in the illustrated embodiment by a door-hole bar, as is common in the assembly of a cabinet door. The door-hole strip is formed as an elongated, provided with the same distance from one another through holes 21 provident, approximately U- or C-shaped hollow profile and attached to the inside of the door. Inside the hollow profile, a threaded piece 40 is mounted, into which the end 26 of a screw 24 is screwed through the hole 21 and thus fixed to the door-hole bar.

In the clamping part 14 is a perpendicular to the recess 22 attached to the in the Figures 1 and 2 shown symmetry axis 28 of the clamping member 14 eccentrically arranged first through hole 30 is provided. Through the through hole 30, the screw 24 extends. The through hole 30 forms together with the screw 24, the pivot bearing for the clamping part 14 and defines the axis of rotation 18th

The screw 24 has a head 34 at the free end 32, which is opposite the end 26 fixed to the guide web 20 or to the door-hole strip. Between the head 34 and a shoulder 38 in the through hole 30, a coil spring 36 is supported, which clamps the guide web 20 in the recess 22. The screw 24 is inserted into the coil spring 36.

The clamping member 14 can be manually raised against the spring force of the coil spring 36 in the direction of the arrow R. As a result, the recess 22 is disengaged from the guide web 20 or with the door-hole strip. Consequently, the clamping member 14 in the lifted in the direction of arrow R (not shown) state about the rotation axis 18 in the direction of arrow B rotate. In this way, the clamping piece of the in the Figures 3 and 2 shown neutral position in the in the FIG. 1 shown locking position are transferred, and vice versa.

As the Figures 1 and 2 show, in the clamping part 14 a to the symmetry axis 28 of the clamping member 14 eccentrically arranged second through hole 42 is mounted which extends parallel to the first through hole 30 and perpendicular to the recess 22. The second through hole 42 performs the same task as the first through hole 30. The two through holes 30 and 42 serve to ensure that the clamping member 14 in doors with right and left stop and at the top and bottom of a door alike to Use can come.

FIG. 4 shows in a schematic perspective partial view and in exploded view of a similar embodiment of the locking device, wherein a state is shown in which the clamping member 14 is inserted in the locking position. The clamping part 14 can be attached to the guide bar 56 so that it engages in the recess 22. The guide web 56 is formed in the illustrated embodiment by an elongated, approximately Z-shaped hollow profile. The Z-shaped hollow profile consists of two mutually parallel longitudinal profiles 58 and 60, which are connected and supported by a perpendicular thereto standing longitudinal web 62. The longitudinal profile part 58 is attached directly to the inside of the door. The parallel longitudinal profile part 60 is spaced from the inside of the door by the longitudinal web 62 and provided with through holes 54. On the inside of the door facing side of the longitudinal profile part 56, a threaded piece 40 can be introduced, which can be attached to the guide web 56. For this purpose, a screw 64 is inserted through one of the through holes 54 and screwed into a corresponding threaded bore 66 in the threaded part 40.

In the clamping part 14 two perpendicular to the recess 22 mounted through holes 30 and 42 are provided. In the in the FIG. 4 shown orientation of the clamping part, the screw 24 is inserted into the through hole 30. The screw 24 has the head 34 at one end. Between the head 34 and a (in FIG. 4 Not shown) paragraph within the through hole 30, a coil spring 36 is supported, which clamps the guide bar 56 in the recess 22. The screw 24 is inserted into the coil spring 36.

FIG. 5 shows in a schematic perspective partial view and in exploded view in the FIG. 4 shown embodiment of the locking device, wherein the clamping member 14 is inserted in neutral position. This condition is in the FIG. 5 shown with solid lines and has already been based on the FIG. 4 explained.

With dotted or thin lines is in the FIG. 5 also shown to the left of the neutral position, that the clamping member 14 about the pivot axis 18, which is defined by the screw 24, can be pivoted into the locking position, similar to that already with reference to FIG Figures 1 and 2 has been described. The arrow C indicates the pivoting direction from the locking to the neutral position.

The clamping part 14 has on one side a contact region 44, on which the clamping part 14 is brought to the casing body 12 when the door 10 is open. The contact area is flat and serves to support the door 10 with respect to the housing body 12.

FIG. 6 shows a schematic perspective partial view of another embodiment of the locking device, wherein the clamping member 14 is inserted in the locking position. The housing body 44 facing the bearing portion 44 of the clamping member 14 has a parallel to the guide web 56 ersteckende, trench-shaped recess 46. In this, a projecting on the housing body 12, parallel to the recess 46 ersteckendes support member 48 then hineinerstrecken and support against the clamping member 14 when the door 10 is moved in the closed position according to arrow D.

The support member 48 cooperates with the trench-shaped recess 46 as a locking means which secures the door. It comes with a movement of the door in the direction of arrow D to a snapping of the support member 48 in the recess 46, whereby the door is held independently in the open position.

The support member 48 forms the frame part of the housing body 12 to which the door hinges are mounted, of which in the FIG. 6 only the door hinge is shown with the reference numeral 8. The clamping part 14 is adapted to the door hinge 8. The size and shape of the clamping member 14 and the abutment portion 44 is determined inter alia by the opening angle of the hinge 8 and by the distance between the housing body 12 and the door 10.

FIG. 7 shows in a schematic perspective partial view and in exploded view the in FIG. 6 shown embodiment of the locking device, wherein the clamping member is used in neutral position. This condition is in the FIG. 7 shown with solid lines and has already been based on the FIG. 6 explained.

With dotted or thin lines is in the FIG. 7 shown left to the neutral position further that the clamping member 14 can be pivoted in the locked position, similar to that already with reference to the FIG. 5 has been described. The arrow C indicates the pivoting direction from the locking to the neutral position.

FIG. 8 shows in a schematic perspective partial view and in exploded view yet another embodiment of the locking device, wherein the state is shown in which the clamping member is inserted in the locking position.
The contact region 44 of the clamping part 14 has a stepped extension 50. On the housing body 12 is a support member 52 before. On the step-shaped extension 50 of the clamping part, the support part 52 is supported when the door 10 is open.

The support member 52 forms the frame part of the housing body 12 to which the door hinges are mounted, of which in the FIG. 8 only the door hinge is shown with the reference numeral 8. The configuration of the stepped extension 50 and the support member 52 is adapted to the door hinge 8. The size and the shape is among other things also determined by the opening angle of the hinge 8 and the distance between the housing body 12 and the door 10.

FIG. 9 shows in a schematic perspective partial view and in exploded view the in FIG. 8 shown embodiment of the locking device, wherein the state is shown in which the clamping member is inserted in neutral position. This condition is in the FIG. 9 shown with solid lines and has already been based on the FIG. 8 explained.

With dotted or thin lines is in the FIG. 9 shown left to the neutral position further that the clamping member 14 can be pivoted in the locked position, similar to that already with reference to the Figures 5 and 7 has been described. The arrow C indicates the pivoting direction from the locking to the neutral position.

Claims (16)

1. A device for blocking open a door (10) of a housing, having a housing body (12) on which the door (10) is hinged, wherein a clamping element (14) of he locking device is insertable into an area (16) between the housing body (12) and the door (10), wherein the clamping element (14) is arranged on an inside of the door (10) rotatable about an axis of rotation (18) which extends perpendicularly with respect to the door (10) and is eccentrically seated on the clamping element (14), wherein the clamping element (14) is rotatable into a blocking position in which the clamping element (14) projects beyond the door (10) when opened and is contactable with the housing body (12); wherein said clamping element (14) is rotatable in a neutral position in which said clamping element (14) does not project beyond the door (10) and is receivable inside the housing body (12) when the door (10) is closed,
   wherein said clamping element (14) is connected with a holding device (20, 22) of said locking device, which holds said clamping device (14) on the one hand in the locking position and on the other hand in the neutral position,
   characterized in that
   the holding device having a guide strip (20, 56) arranged on the door (10) which engages in both positions a recess (22) of the clamping element (14), and
   said axis of rotation is defined by a pin (24) having an end (26) fixed in place on the guide strip (20, 56), and the clamping element (14) has a first through-bore (30) arranged perpendicularly with respect to the recess (22) and eccentrically with respect to the axis of symmetry (28) of the clamping element, through which a pin (24) extends and which forms the rotatory seating for the clamping element (14), wherein said rotatory seating allows lifting of the clamping element (14), so that a recess (22) is disengaged from said guide strip (20).
2. The device according to claim 1,
   characterized in that
   said blocking position is shifted by 180° with respect to the neutral position.
3. The device according to claims 1 or 2,
   characterized in that
   said pin (24) has a head (34) at a free end (32) located opposite to the end (26) fixed on the guide strip (20, 56), and a compression spring (36) acts between the head (34) and the clamping element (14), which clamps the guide strip (20, 56) in place in the recess (22).
4. The device according to claim 3,
   characterized in that
   said compression spring (36) is formed by a helical spring into which the pin (24) is introduced.
5. The device according to claim 4,
   characterized in that
   a shoulder (38) is formed in the through-bore (30) on a side of the clamping element (14) facing the compression spring (36) on which the helical spring (36) is supported.
6. The device according to one of claims 1 to 5,
   characterized in that
   said pin (24) is formed as a screw which engages a threaded element (40) located at the guide strip (20, 56).
7. The device according to one of claims 1 to 6,
   characterized in that
   said guide strip (20, 56) is formed by a perforated door strip.
8. The device according to one of claims 1 to 7,
   characterized in that
   a second through-bore (42) arranged eccentric with respect to the axis of symmetry (28) of the clamping element (14) is cut in the clamping element and extends parallel to the first through-bore (30) and perpendicular to the recess (22).
9. The device according to one of claims 1 to 8,
   characterized in that
   a blocking element acts between the clamping element (14) and the housing body (12), which maintains the door in the open position.
10. The device according to one of claims 1 to 9,
    characterized in that
    the clamping element (14) has a contact area (44) on which the clamping element (14) can contact with the housing body (12) when the door (10) is open.
11. The device according to claims 9 and 10,
    characterized in that
    the blocking element is formed at the contact area (44) of the clamping element (14).
12. The device according to one of claims 10 or 11,
    characterized in that
    the contact area (44) of the clamping element (14) has a recess (46) into which when the door (10) is open a support element (48) on the housing body (12) extends and is supported against the clamping element (14).
13. The device according to one of claims 9 to 12,
    characterized in that
    a snap-in holder is formed between the clamping element (14) and the housing body (12).
14. The device according to one of claims 12 or 13,
    characterized in that
    the support element (48) forms the frame element of the housing to which at least one door hinge (8) is attached.
15. The device according to one of claims 9 to 14,
    characterized in that
    the blocking element and the contact area (44), respectively, of the clamping element (14) are matched to the door hinge (8).
16. The device according to one of claims 10 to 15,
    characterized in that
    the contact area (44) of the clamping element (14) has a step-shaped extension (50) against which a support element (52) protruding from the housing body (12) is supported when the door (10) is open.

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