EP1066437A1

EP1066437A1 - Spring-loaded catch for a sliding door of a sheet metal cupboard

Info

Publication number: EP1066437A1
Application number: EP99911792A
Authority: EP
Inventors: Dieter Ramsauer
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-03-25
Filing date: 1999-03-13
Publication date: 2001-01-10
Anticipated expiration: 2019-03-13
Also published as: DE59900686D1; WO1999049158B1; EP1066437B1; JP2002507680A; DE29805358U1; DE19980501D2; WO1999049158A1; US6550824B1

Abstract

The invention relates to a spring-loaded catch (10) for a sliding door (12) of a machine casing (18) which door is preferably reeinforced on at least one side by a sheet metal fold (14) or a rectangular hollow profile. The spring-loaded catch comprises a handle (20) which is mounted in a pivoting manner on the reinforced side of the sliding door (12) and which cooperates with a latch bolt device (30), as well as a retaining device (26) which is mounted on or housed inside a door frame (18) or in a shaped section which delimits an opening in the machine casing for the purpose of receiving the latch bolt (30) when the door is closed. According to the invention the handle (20) comprises a bar (32) which at its ends extends around a swivel pin (22) parallel to the reinforced side of the door leaf (12) and positioned behind the door leaf or within the sheet metal fold or hollow profile. The ends (34, 36) of said bar are both fixed in a support (40, 38) and at least one of these two supports (for example, 40) is coupled to a hook (30) with free travel (50, 52) which is mounted in a pivoting manner coaxially to the swivel pin and forms the locking latch.

Description

Snap lock for a sheet metal sliding door

Technical field:

The invention relates to a snap lock for a sliding door or the like, a machine paneling or the like, preferably reinforced on at least one side with a sheet metal bend or a rectangular high profile, with a handle pivotally mounted on the reinforced side of the sliding door, which cooperates with a locking latch device, and with a on or in a door frame or on or in a profile limiting or opening an opening in the machine cladding arranged behind handle device for receiving the latch bolt when the door is closed.

State of the art:

Such snap closures are already known to the applicant. A disadvantage of the arrangement known to him is, among other things, that a latch handle is usually used to open the snap lock, which has to be pivoted to open, whereupon the tumbler is released and the sliding door can be pushed open by further pressing against the latch handle. This handle has the one disadvantage that you can get caught on it with clothing, which is intolerable in dangerous situations. Another disadvantage is that due to the pivoting process, the handle is inclined with respect to the sliding direction and thereby the pressure force to be applied to the handle increases and the hand also tends to slide off the handle when it is tilted. A third disadvantage is the unsightly appearance of such a handle.

Object of the invention:

The object of the invention is to improve a snap lock of the type mentioned in such a way that the above-described disadvantage as possible be completely avoided.

Solution:

The object is achieved in that the handle comprises a pivot axis (rotations, the ends of which are each received in a rod holder) at the ends around a pivot axis running parallel to the reinforced side of the door leaf, behind the door leaf or within the sheet metal bend or the hollow profile, and that at least one of the two rod holders is coupled to a hook which is mounted coaxially with the pivot axis and which is free-running and which forms the locking latch.

This construction on the one hand ensures that there is no hook-shaped handle on which a user can get caught with his clothes. Furthermore, it is achieved that the orientation of the handle with respect to the direction of movement of the sliding door for the operating hand does not change during the pivoting process, because the handle does not twist with respect to this direction, but rather is pivoted and displaced essentially parallel to the door leaf in this direction. The operator thus acts perpendicular to the handle extension. There is no danger that the hand will slide off the handle. The handle also has a more aesthetic shape and allows an overall greater force to be exerted on the sliding door in order to move it.

The snap lock according to the invention enables numerous further developments, each of which has its own advantages.

According to a first embodiment, the rod holder in the area of its storage is a two-pronged fork, between whose two prongs the hook is mounted. This gives a tilt-free and particularly stable and smooth-running storage and facilitates the operation of the snap lock, both with automatic latch-like locking when closing the door, as well as when releasing and then opening the lock to open the door.

According to another development of the invention, the fork web between the two fork tines is provided with two stop surfaces to limit the pivoting movement of the hook. This enables the operator to determine whether the tumbler has been released by opening it up to a certain stop point, so that the sliding door can then be opened.

According to a development of the invention, the bearing for the rod holder is preferably formed by a profile piece provided with a fastening flange, which is received in a rectangular opening in the sheet metal bend or in the hollow profile of the door leaf. This is a particularly stable and elegant arrangement and allows the available space inside the sheet metal bend or the hollow profile to be used sensibly.

According to yet another development of the invention, the profile piece is provided with a receptacle for a compression spring which presses the hook into its closed position. Furthermore, the rod holder can form a receptacle for a spring which urges the rod holder into a rest position. In particular, it is advantageous if the spring is a compression spring which bears against an inner surface of the profile piece. This measure results in a particularly simple construction, which also has the advantage of great compactness.

The flange surface advantageously forms a partial cylinder, the rod holder forming a collar which extends at a short distance from the flange surface and extends so far that the profile piece opening is covered by the collar during the pivoting movement of the holder. These measures prevent the operator from being injured.

It is also advantageous if the side walls of the profile piece have bores which are coaxial to one another and offset from the pivot axis, and if the hook has a bore which is aligned with the bores of the side walls when the hook is in the closed position and the rod holder is in the rest position, and that a pin lock can be inserted into these holes. With the help of this feature, a structurally particularly simple and secure locking can be realized.

A further development is also conceivable in which this pin lock can be controlled electrically. In this way it is possible, for example, to prevent the sliding door from opening for as long as is necessary for safety reasons, for example while the machine system is still running.

According to yet another embodiment, the hook is not mounted coaxially to the pivot axis of the rod, but perpendicular to it. The hook is then preferably mounted on an extension of the profile piece and z. B. pushed into its closed position by gravity. From this z. B. reached by gravity, the hook can then be raised in that the rod holder forms a cam that slides along a cam track formed by the hook and thereby raises the hook against gravity when the door is to be opened and the door handle is pivoted becomes.

Brief description of the invention:

The invention is explained in more detail below with reference to exemplary embodiments which are illustrated in the drawings.

It shows:

Figure 1 is a cross-sectional view through a snap lock installed in the folded area of the sliding door of a machine casing.

2 shows a plan view of one of the two rod holders; Fig. 3

a side view of the snap lock of FIG. 1;

Fig. 4 is a top view of the snap lock of Fig.;

Fig. 5 in a view similar to Figure 1, the snap lock while sliding the sliding door.

Fig. 6 in a view similar to Figure 1, the snap lock during the opening process.

7 shows a further embodiment in a side view; and

8 is a sectional view of the embodiment of FIG. 7.

Best ways of carrying out the invention:

Fig. 1 shows in a cross-sectional view a snap lock 10 for a sliding door 12, which is provided in the area of the snap lock with a sheet metal bend 14, which here forms a substantially completely closed or partially closed rectangular hollow profile. Such a profile can be circumferential, or can only be provided on one side of the door. The profile thus forms, for example, a rectangular frame in which a plate 16 or a corresponding grid is fitted. The sliding door 12 is so displaceably mounted within a housing or machine cladding 18 in a manner not of interest here, for example by rollers, rope suspension or the like, that it can be moved from a first open position into a second position closing the opening of the machine cover, which can be seen in Fig. 1. On or in the side of the sliding door 12 reinforced by the bend 14 or the profile, a handle 20 is mounted about a pivot axis 22 which runs parallel to the reinforced side of the door leaf, behind the door leaf or within the sheet metal bend 14 or in the hollow profile, with a Closure latch cooperates in a door-sliding direction 24, as will be described in more detail below. Furthermore, in FIG. 1 a rear grip device 26 attached or accommodated on or in the door frame 18 (or on or in an opening of a profile delimiting the machine cladding) can be seen, e.g. B. in the form of a welded to the sheet of the profile 18 pin shown in FIG. 2, which receives a formed by the latch latch device 24 hook 30, as shown in FIG. 1. The handle 20 itself represents a round rod 32, see also FIG. 4, which can be designed as a tube or as a solid material rod. The two ends 34, 36, see FIG. 3, of the rod 32 are each received in a rod holder 38, 40, of which at least one, according to FIG. 4 it is the upper one, with a hook mounted coaxially about the axis 22 of the holder 30 is provided, which hook 30 has a clutch 42 provided with a freewheel and forms the locking latch 24. The rod holder 40 comprising the locking latch comprises a two-pronged fork 44, see also FIG. 2, between the two prongs 46, 48 of which the hook 30 is pivotably mounted about a pin axis 22 between a position shown in FIG. 1 and a position recognizable in FIG. 6 is.

Stop surfaces 50 and 52 serve to limit this pivoting path, see FIG. 1, which are formed by the connecting web between the two fork prongs 46, 48. The pivot axis 22 for the hook 30 as well as for z. B. the rod holder 40 is formed by a pin 54 which is held in two side walls 56, 58 of a profile piece 62 provided with a fastening flange 60. The profile piece 62 is accommodated in a rectangular opening 64 in the outer surface 66 of the sliding door 12 and fastened with the aid of cap screws 68 which pass through suitable openings next to the rectangular opening 64 in the side wall 66 and in corresponding threaded bores 70 in the flange 60 can be screwed in. This profile piece 62 not only supports the bearing pin 54 for the rod holder 38 or 40 and the hook device 30, see FIG. 3, it also forms the receptacle 72 for a compression spring 74 which, see FIG. 1, acts on the hook 30 in this way that it is pressed into its closed position. As can also be seen in FIG. 1, the rod holder 40 (possibly also 38) forms a receptacle 76 for a spring 78 which, according to FIG. 1, has the shape of a spiral compression spring which is supported on the inner surface of the transverse wall 80 of the profile piece 62 and presses against the receptacle 40 and 38 into the rest position (closed position) recognizable in FIG. 1, in which the rod holder 40, 38 rests with its surface 82 on the opposite transverse wall 84 of the profile piece 62. By pressing the rod 32 in the direction of arrow 86, that is the direction of the sliding opening of the door 12, the holder 40 or 38 is pivoted clockwise around the bearing pin 22, whereupon the holder 40 or 38 pivoted about the pin 54 to the position shown in FIG. 6. In this position, the surface 88 of the holder 40 or 38 abuts the inner surface of the transverse wall 80. 1 requires a gap 90 between the transverse wall 80 on the one hand and the surface 88 of the holder 40 or 38 on the other hand, which, when the rod holder is pivoted from the position according to FIG. 1 into the position according to FIG. 6 is closed, on the other hand, a gap 92 between the transverse wall 84 and surface 82, which is closed when the rod holder 40 or 38 is pivoted back into the rest position (from the position according to FIG. 6 back to the position according to FIG. 1). This locking movement could pinch the user's finger if it were located within the gap 92 or 90. In order to prevent this, the flange surface 94 forms a partial cylinder, the radius of curvature of which is formed by the axis 22 of the bearing pin 54, as conversely the rod holder 38 or 40 forms a collar 96 which is at a closer distance 98 to the flange surface 94 and extends as far as possible that during the pivoting movement of the holder 40 or 38, the gap opening of the profile piece 90 or 92 is just covered, as shown in FIG. 6 and FIG. 1. The operator can therefore not enter the space 92 or 90 formed by the gap with his fingertip in any position of the lever and is therefore protected against injuries. From Fig. 3 it follows that the opposite side walls 56, 58 of the profile piece 62 have mutually coaxial, offset from the bore for the pivot axis 22 holes 100, 102, and that the bracket 40 and 38 has a bore 104 which to the bores 100, 102 of the side walls 56, 58 of the profile piece 62 are aligned when the holder is in the rest position shown in FIG. 1. In this position, a pin 108 can be inserted with the aid of a locking device 106, which in the inserted position holds the holder 40 or 38 in the rest position shown in FIG. 1 with respect to the profile piece 62. The pin 108 thus prevents a pivoting movement of the holder or the handle 20 in the direction of the arrow 86. If, on the other hand, the pin 108 is moved out of the bores 100, 102, 104, for example with the aid of an electrical device, controlled via a cable connection 110, the Handle 20 is gripped and with it the associated holder 40 or 38 is pivoted about the axis 22 in the clockwise direction (according to FIG. 1), whereupon the stop surface 50 presses against the lever 30 and moves it about the axis 22 in the clockwise direction. During this movement, the hook 30 is released from the pin 26 of the door frame 18, the spring 74 being compressed at the same time, see FIG. 6. By further pressing in the direction of the arrow 86, the door 12 is now pushed away from the frame 18, initially in 6, then further until the door has released the opening of the housing previously closed by the door. The sliding direction thus coincides with the triggering direction, arrow 86. The opening movement of the door can be horizontal or vertical.

If the door is open, the handle can be released and, due to the spring force of the spring 78, reaches the position which can be seen in FIG. 1. If the door is now to be closed again, the lever 20 is gripped again and is now pressed against the arrow 86. At this point, the handle 20 is in the rest position which can be seen in FIG. 5 due to the force of the spring 78 (and also due to the force of the actuating hand). If the door 12 now approaches the door frame 18, the front region 112 of the hook 30 first penetrates a slot 114 in the wall 116 of the frame 18 shown here with a rectangular profile, an inclined surface of the front region 112 hitting a pin 26 arranged within the profile of the frame 18 , which is arranged so that it then hooks 30 in the direction of 5 pivoted clockwise around the bearing axis 22, as can be seen, for example, in FIG. 5, so that the hook 30 can slide past the pin 26. As soon as the position according to FIG. 1 is reached, the compression spring 74 presses the hook 30 again into the locking position recognizable in FIG. 1, in which the hook engages behind the pin 26 with its hook end (recess area 116) and thereby the door in the position shown in FIG 1 shown locked position. In this position, the holes 100, 102 and 104 are again aligned and a pin 108 can be inserted into these holes and thereby hold the lever 30 in the locked position.

Only when this pin, for example by an electrical signal, supplied via a cable 110, is pulled out of the bores 100, 102 and 104 again, or at least out of the bores 100 and 104, is it possible to move the hand lever 20 into its position shown in FIG. 6 pivot position shown and thereby bring the hook 30 out of its locked position and open the sliding door. Such an electrical signal can be generated, for example, when a previously running machine has come to a standstill and can be made accessible without risk.

It is clear that a slot 120 of suitable length will be provided in the wall 118 for the passage of the hook 30.

With smooth-running doors, it will usually be sufficient to use only one of the two rod holders, e.g. 3, the upper bracket 40 to be provided with a locking hook device 30. If larger locking forces are to be absorbed, on the other hand, it makes sense to equip both rod holders with hooks accordingly, that is, according to FIG. 3, both the upper and the lower locking rod holder. 4, a top view of the closure, the upper holder 40 is provided with a locking device 30, but the lower holder is not.

Figure 4 also shows how aesthetic the arrangement is because z. B. no fastening screws are visible from the outside. This creates an overall very stable handle that is suitable for heavy doors. The round bar 32 is particularly easy to grasp and also enables adaptation to different door heights or door widths. So the distance between the two brackets 40 and 38 depending on the door height (or door width) z. B. 30 cm, 50 cm or 100 cm.

3, the rod 32 is received in the holders 34, 36 in pot receptacles (blind holes).

The brackets are different in that the receiving opening for the round rod 32 is once "left" and once "right". If the receptacles are through holes, on the other hand, complete identity between the upper and lower brackets is achieved, which can have manufacturing and storage advantages.

FIG. 8 shows an arrangement similar to FIG. 1, but here the hook 230 is pivotably mounted on an extension 161 starting from the profile piece 262 about an axis 222 which is perpendicular to the axis 322 of the handle 220. Likewise, the pin 226 here is offset by 90 °, that is to say parallel to the axis 222. The hook 230 has a cam track 263, along which a cam device 265 can slide, which is carried by the free end of the rod holder 240. When the handle 220 is pivoted in the direction of the arrow 286 from the rest position shown in FIG. 8 against the force of the spring 278 about the pivot axis 322, the cam 263 thus moves from the position shown in FIG. 8 in the direction of the arrow 267 and thereby presses 7 the hook 230 upwards, in the direction of the arrow 269. The hook 230 pivots about the axis 222 and releases the pin 226 in the release position and the sliding door 12 can then be pushed open in the direction of the arrow 186 with further pressure .

If the handle 220 is released, it reaches the starting position shown in FIG. 8, whereupon the hook 230 moves into its lowered position shown in FIG. 7. He reaches this position either due to gravity, or due to a compression spring, not shown here, which could be attached to the axis 262, or could act on the hook 230 in some other way. When the door is pushed closed, an inclined surface 312 of the hook reaches the pin 262, is lifted by the latter (in the direction of arrow 269) and the hook finally reaches the lowered position shown in FIG. 7.

A pin lock can also be provided here, which, similar to the arrangement of FIG. 6, holds the hand lever 240 in its rest position, so that it cannot be pivoted away from this rest position shown in FIG. 8 and the door cannot be opened as a result.

Commercial evaluation of the invention:

The invention can be evaluated commercially in control cabinet construction.

Claims

P atent claims:

1.

Snap closure (10) for a sliding door (12) or the like, which is preferably reinforced on at least one side with a sheet metal fold (14) or a rectangular hollow profile. A machine casing (18) or the like, with a pivotally mounted on the reinforced side of the sliding door (12). Handle (20), which cooperates with a latch latch device (24), and with a rear grip device (26) located on or in a door frame (18) or on or in a profile delimiting an opening in the machine casing, for receiving the latch latch ( 30) with the door (12) closed, characterized in that the handle (20) has a pivot axis at the ends about a pivot axis running parallel to the reinforced side of the door leaf (12), behind the door leaf or within the sheet metal fold (14) or the hollow profile (22) mounted rod (32), the ends (34, 36) of which are each received in a rod holder (38, 40), and that at least one of the two rod holders (38, 40) can be pivoted coaxially to the pivot axis (22). mounted hook (30) is coupled to the freewheel, which forms the locking latch (24).

2.

Snap closure according to claim 1, characterized in that the rod holder (38; 40) forms a fork (44) in the area of its storage (22; 54), between the two prongs (46, 48) of which the hook (30) is mounted.

3.

Snap closure according to claim 2, characterized in that the fork web forms two stop surfaces (50, 52) between the two prongs to limit the pivoting movement of the hook (30).

4.

Snap lock according to one of claims 2 to 3, characterized in that the pivot bearing for the rod holder is formed by a profile piece (62) provided with a fastening flange (60) which is in a rectangular opening (64) in the sheet metal fold or in the hollow profile of the door leaf ( 12) is included.

5.

Snap closure according to claim 4, characterized in that the profile piece (62) forms a receptacle (74) for a compression spring (72) which presses the hook (30) into its closed position.

6.

Snap closure according to one of claims 2 to 5, characterized in that the rod holder (38, 40) forms a receptacle (76) for a spring (78) which urges the rod holder into a rest position (Fig. 1).

7.

Snap closure according to claim 6, characterized in that the spring (78) is a compression spring which rests on an inner surface of the profile piece (62).

8th.

Snap closure according to one of claims 2 to 7, characterized in that the surface of the fastening flange (60) forms a partial cylinder, and that the rod holder (rod holder) forms a collar (96) which is at a short distance (98) from the flange surface ( 94) and extends so far that the profile piece opening (90; 92) is covered by the collar (96) during the pivoting movement of the holder.

9.

Snap closure according to one of claims 1 to 8, characterized in that the side walls (56, 58) of the profile piece (62) are coaxial with one another, opposite the Pivot axis (22) have offset holes (100, 102), and that the hook has a hole (104) which is aligned with the holes (102, 104) in the side walls when the hook (30) is in the closed position and the rod holder is is in the rest position, and that a pin lock (108) can be inserted into these holes (100, 102, 104).

10.

Snap closure according to claim 9, characterized in that the pin lock (108) is electrically controlled (110).

11.

Snap closure (210) for a sliding door (12) or the like, which is preferably reinforced on at least one side with a sheet metal fold (14) or a rectangular hollow profile. A machine panel (18) or the like, with a pivotally mounted on the reinforced side of the sliding door (12). Handle (220), which cooperates with a latch latch device (224), and with a rear grip device (226) located on or in a door frame (18) or on or in a profile delimiting an opening in the machine casing, for receiving the latch latch ( 230) with the door (12) closed, characterized in that the handle (220) has a pivot axis at the ends that runs parallel to the reinforced side of the door leaf (12) and lies behind the door leaf or within the sheet metal fold (14) or the hollow profile (322) mounted rod (232), the ends of which are each received in a rod holder (240), and that at least one of the two rod holders (240) with a hook (232) mounted perpendicular to the pivot axis (322) of the rod (232). 230) engages, which forms the locking latch (224).

12.

Snap closure according to claim 11, characterized in that the bearing (322) for the rod holder (240) is formed by a profile piece (262) provided with a fastening flange (260) which is in a rectangular opening (64) in the Sheet metal folding or in the hollow profile of the door leaf (12) is accommodated.

13.

Snap closure according to claim 12, characterized in that the hook (230) is pivotally mounted (262) on an extension (261) of the profile piece (262) and is forced into its closed position by gravity or by spring force.

14.

Snap closure according to one of claims 11 to 13, characterized in that the rod holder (240) forms a cam (265) which slides along a cam track (263) formed by the hook (230), thereby holding the hook (230) against gravity or pivoted about its pivot axis (222) against the spring force.

15.

Snap closure according to one of claims 11 to 14, characterized in that the rod holder (240) forms a receptacle (276) for a spring (278) which urges the rod holder into a rest position.

16.

Snap closure according to claim 15, characterized in that the spring (278) is a compression spring which rests on an inner surface of the profile piece (262).

17.

Snap closure according to one of claims 11 to 16, characterized in that the surface of the fastening flange (260) forms a partial cylinder, and that the rod holder (rod receptacle) forms a collar which is at a short distance from the flange surface and extends so far that During the pivoting movement of the holder, the profile piece opening is covered by the collar.

18.

Snap closure according to one of claims 11 to 17, characterized in that the side walls of the profile piece have holes coaxial with one another and offset from the pivot axis (322), so that a pin lock can be inserted into these holes.

19.

Snap closure according to claim 18, characterized in that the pin lock can be controlled electrically.