JP3014247U - Lock and safety device - Google Patents

Abstract

(57) [Abstract] [Purpose] By operating only one lock, the door and the closable hole are locked and unlocked at the same time by a locking and safety device. [Structure] A lock and safety device for opening / closing device cabinets etc. is 1
It is equipped with four locks 4. This lock is provided in the door 2 for operating the locking lever 5 and the shielding member 7 and acting via one or more Bowden cables 8 on one or more locking devices of the door. The hole 3 of the door can be closed by this shielding member.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is capable of locking a swingable door and at the same time closing a hole in this door for inserting a manual operating means, a lock for a switchgear cabinet, switchgear casing, etc. Also related to safety devices.

[0002]

[Prior art]

 Numerous implementations of switchgear cabinets and switchgear casings of various materials, for example sheet metal, metal castings or synthetic resins, are known for operating electrical actuating means, drives, transformers, etc. .

Such switchgear casings typically include a door, one side of which is attached to the casing. The door also has holes. Through this hole, operating means such as a hand crank or a square wrench can be inserted into the switchgear casing. In order to protect against the manipulation or vandalism of unauthorized third parties, especially in the case of many open door casings not monitored, it is necessary to prevent the opening of the door by unauthorized third parties. , It is necessary to prevent unauthorized third parties from entering operating means or other objects into the hole in the door.

Therefore, conventionally, the door and the swingable flap for closing the hole are locked by separate locks. Such a safety device of a two-piece casing consisting of a tank and a lid is known, for example, from the motor drives MA7, MA9 of the Meissinen-Fabrik Reinhausen-Gembeicher in Regensburg.

In the case of this safety device, two cylinder locks are provided. The first cylinder lock is connected to a flap closing a hole for inserting a hand crank. The second cylinder lock provided in the lid serves to fix the door to the casing by connecting it to the lock. In the locked state, this locking part engages a corresponding part connected to the casing tank.

[0006]

[Problems to be solved by the device]

 The task of the present invention is to avoid the costly structure of two separate locks and to operate only one lock to lock the door and the closable hole at the same time with a locking and safety device. And unlocking.

[0007]

[Means for Solving the Problems]

 The problem is that a lock is provided inside the door so that the lock lever provided inside the door can be swung around the rotation point when the lock is operated. It acts on a movable connecting plate, which is connected to a swingable shield member, which allows the door hole to be closed from the inside, and allows the locking lever or connecting plate to connect to the inside of the door. One end of at least one Bowden cable provided on the housing is pivotally attached, and the other end of the Bowden cable is connected to a locking pin, and the locking pin is engaged with a locking plate provided on the casing. A solution is provided that at least one spring is provided so that in the stationary state at least one locking pin is locked to the locking plate and at the same time the hole is closed by the shielding member. It The dependent claims describe advantageous embodiments of the invention.

In addition to a simplified combination of locking and unlocking, the present invention allows the lock and safety device to be easily adapted to different sizes of the switchgear casing and the lock used, and to be mounted on the right side. It has the advantage that it can be applied to both doors and left-side mounting doors.

[0009]

【Example】

 Next, the present invention will be exemplarily described in detail with reference to the drawings. A door 2 is swingably arranged at the side of the front surface of the casing 1. The door has a hole 3 for inserting a hand crank. A lock, here a safety cylinder lock 4, is fitted into the door 2. When the cylinder lock is operated, that is, when the key is rotated in the cylinder, the lock lever 5 fixedly connected to the cylinder lock and provided inside the door 2 is rotated.

A coupling plate 6 is rotatably supported on the locking lever 5 outside the center of rotation 5.1 thereof around a first rotation point 6.1. This connecting plate also acts on the shielding member 7 via the second rotation point 6.2. This shield usually covers the hole 3 of the door 2 from the inside and can be swiveled around the point of rotation 7.1, whereby the hole 3 can be opened.

Further, the locking lever 5 has a first end of the Bowden cable 8 fixed thereto. The Bowden cable 8 is pivotally mounted by a first support member 9 fixedly arranged on the inner surface of the door 2.

The other end of the Bowden cable 8 acts on the locking pin 12 against the force of the compression spring 11 via the fixed second supporting member 10. This locking pin engages a locking plate 13 fixedly arranged on the casing 1. Thereby, the door can be locked.

When the safety cylinder lock 4 is operated, the lock lever 5 makes a rotational movement in the direction of the arrow shown in the figure. The locking lever swings around its point of rotation 5.1. This turning point is at the same time the turning point of the safety cylinder lock 4. The shielding member 7 swings around the rotation point 7.1 via the connecting plate 6 to open the hole 3. At the same time, the locking lever 5 causes the bowing cable 8 to slide to the left in the figure relative to the first support member 9, thereby pulling out the locking pin 12 from the locking plate 13. As a result, the door 2 is unlocked. Therefore, only by operating the safety cylinder lock 4, the door 2 and the hole 3 are locked or locked.

Independently of this, an electrical switch 14, for example a microswitch, can additionally be provided inside the door 2. When the shielding member 7 is swung from the position where the hole 3 is closed, this switch is switched off by its switching roller 14.1, for example to electrically inform the monitoring device of the unlocking or to switch off the circuit breaker. Be useful. When the breaker is turned off, the breaker can be turned off without electric current by an electric actuating means before inserting the operating means, for example a hand crank, into the hole 3, so that in any case the switching operation can be done without electricity. Done.

A second modified embodiment of the present invention is shown in FIG. In this case, the locking lever 5 is not fixedly connected to the connecting plate 6 but has a pin 5.2. This pin engages with the recess 6.3 of the connecting plate 6. In this case, the connecting plate 6 is formed so as to move linearly, and one end of the Bowden cable 8 is directly pivotally attached to the connecting plate 6. The operation of the shielding member 7 is performed by the connecting plate 6 via the elongated hole guide 6.4.

Instead of the compression spring of the locking pin 12, here a tension spring 15 is provided on the shielding member 7, which in the stationary state closes at least the manual crank hole 3 and at the same time the locking pin 12 is closed. Engage with the lock plate 13.

[0017]

[Effect of device]

 The lock / safety device of the present invention can lock and unlock the door and the closable hole at the same time by the lock / safety device by operating only one lock. The advantage is that the safety device can be easily adapted to different dimensions of the switchgear casing and the locks used and can be applied to both right and left mounting doors.

[Brief description of drawings]

FIG. 1 is a front view of a first locking and safety device according to the present invention provided inside an opening / closing device casing door.

FIG. 2 is a plan view of this first device.

FIG. 3 is a partial cross-sectional view of this device.

FIG. 4 is a front view of a second locking and safety device.

[Explanation of symbols]

 1 Casing 2 Door 3 Manual crank hole 4 Safety cylinder lock 5 Locking lever 5.1 Rotation point 5.2 Pin 6 Connecting plate 6.1 First rotation point 6.2 Second rotation point 6.3 Recessed portion 6. 4 Long hole guide 7 Shielding member 8 Bowden cable 9 First supporting member 10 Second supporting member 11 Compression spring 12 Locking pin 13 Locking plate 14 Micro switch 14.1 Switching roller 15 Tension spring

Claims (7)

[Scope of utility model registration request] 1. A lock and safety device for a switchgear cabinet, switchgear casing, etc. for locking a swingable door and closing a hole in this door, wherein one lock (4) Is provided, and the lock lever (5) provided inside the door (2) is operated at the rotation point (5.
A lock is arranged in the door (2) so that it can be swung around 1), a locking lever (5) acts on a movable connecting plate (6), and this connecting plate can swing. The hole (3) of the door (2) can be closed from the inside by being connected to the lock lever (5) or the connecting plate (6) and the inside of the door (2). One end of at least one Bowden cable (8) provided is pivotally mounted and the other end of this Bowden cable is connected to a locking pin (12), which locking pin is the casing (1). Can be locked to a locking plate (13) provided on the lock plate (13), and at least one locking pin (12) is locked to the locking plate (13) in a stationary state, and at the same time, the hole (3) has a shielding member ( 7)
At least one spring (1
1, 15) are provided, and a lock and safety device. 2. The locking lever (5) acts on the connecting plate (6) by continuously connecting the locking lever (5) and the connecting plate (6) with each other by a rotation point (6.1). The lock and safety device according to claim 1, wherein 3. The locking lever (5) acts on the connecting plate (6) by the action of the pin (5.2) of the locking lever (5) on the recess (6.3) of the connecting plate (6). The lock / safety device according to claim 1, wherein the lock / safety device operates. 4. The chain according to claim 1, wherein the connecting plate (6) and the shielding member (7) are connected to each other via another rotation point (6.2). Lock and safety device. 5. The locking and safety device according to claim 1, wherein the connecting plate (6) and the shielding member (7) are connected to each other by an elongated hole guide (6.4). apparatus. 6. At least one Bowden cable (8) has ends which are fixed on both sides to support members (9, 10) provided on the inside of the door, respectively. Any one of the lock and safety device. 7. A switch (23) is additionally provided inside the door (2) and is operable when the locking plate (15) is swung. Any one of the lock and safety device.