DE102012017846A1 - Cabinet lock for multiple cabinet system, comprises displacement drive, which is hydraulically or pneumatically formed for operating locking mechanism of locking bar, and hydraulic or pneumatic drive elements for generating actuating energy - Google Patents

Abstract

The cabinet lock comprises a locking bar (30), which is engaged and disengaged with a displacement drive (24) at the body in a bolt keeper. The displacement drive is hydraulically or pneumatically formed for operating the locking mechanism of the locking bar. The mechanical actuating energy for actuating the locking elements of the cabinet lock is generated by hydraulic or pneumatic drive elements (8), which effectuate the opening or closing state, and are driven by the mechanical movement of the user-sided actuating element (1) during the opening or closing state.

Description

The invention relates to a hydraulic or pneumatic locking mechanism for cabinet locks according to the preamble of claim 1. Such cabinet locks are used as locks for central locking systems for changing rooms, libraries, valuables and the like. As state of the art, for example, on the subject of the EP0 911 466 B2 directed.

In such central locking systems, there is the problem that in the locker lock a stationary battery must be kept, which has a maximum life of about two years. After that the battery has to be replaced. After some batteries have a somewhat shorter life than other batteries, it is known to replace all batteries in a certain maintenance rhythm, regardless of the actual condition of the batteries used. This results in a high maintenance and cost, and unnecessary amounts of waste batteries that need to be disposed of.

The invention also relates to locking mechanisms for cabinet locks, which are wireless, that is not wired connected to a power supply center are connected. Such wireless cabinet locks have become known only in such a way that a stationary battery is installed. The authorization of a user-carried, mobile data carrier is accomplished by querying in a lock-side, electromagnetic field (for example, NFC field or RFID field).

Disadvantage of battery-bound cabinet locks, however, is the aforementioned high maintenance and cost.

The invention is therefore based on the object, a cabinet lock of the type mentioned in such a way that the locking or the operation of the locking mechanism is hydraulically or pneumatically. As a result, only one drive circuit for the closing mechanism to supply, which means the elimination of a large energy storage.

To solve the problem, the invention is characterized by the technical teaching of claim 1.

An essential feature of the invention is that the operation of the closing and opening mechanism of the cabinet lock is done hydraulically or pneumatically.

Given the technical teaching, there is the advantage that is dispensed with an electrical actuation of the closing and opening elements in the lock cabinet, and instead a pneumatic or hydraulic actuation takes place. However, the valves used should nevertheless be electrically controlled.

It is important that the mechanical actuation energy for the actuation of the actuators that cause the opening or closing state, is generated by hydraulic or pneumatic drive elements, which in turn are driven by the mechanical movement or mechanical energy of the user in the opening or closing state.

This results in the significant advantage that the user himself by the mechanical operation when opening or closing the cabinet lock according to the invention the necessary actuation energy via pneumatic or hydraulic elements applies to actuate the opening or closing elements.

For the sake of simplicity of description, it will be assumed in the following description that hydraulic actuation occurs, to which the invention is however not limited. It is merely hydraulic description for the sake of simplicity of description described, although a pneumatic actuator or a combination of hydraulic and pneumatic actuation may also be provided. Thus, if in the following description only a hydraulic actuation is described, this is not limiting for the invention to understand, because a fluidic actuation is generally claimed.

Feature of the invention is therefore that the kinematic energy is generated by the mechanical actuation of a necessary opening or closing of the cabinet lock actuator with which a piston-cylinder unit is actuated, which in turn directly or indirectly controls the opening and closing elements of the cabinet lock and operated.

In a preferred embodiment, the actuating element is designed as a push button, which acts directly or indirectly on a piston rod of a piston-cylinder unit and leads to a compression of a hydraulic fluid, which is introduced via a valve in a pressure accumulator.

The pressure accumulator should have a high storage capacity to absorb the pressure energy generated at the opening or closing state. In this way, a pressure energy is provided by the pressure accumulator, which is suitable for a multiple actuation of the opening and closing elements.

In principle, a pump for hydraulic fluids is driven by the mechanical actuation energy of the user, and the pressure generated (energy) is stored in a memory (pressure accumulator) and forwarded via a valve to the actual closing mechanism. The valve should be actuated electromechanically and can thus be controlled directly by a microcontroller and an associated electronics.

In a preferred embodiment of the invention, a pump is used to generate energy, which is actuated by a linear movement of a user-actuated actuating element, wherein the actuating element z. B. is designed as a closing or opening button.

Instead of a linear actuated actuator and a knob can be used, which uses its rotational energy to drive the hydraulic pump.

The pressure generated by the pump is temporarily stored in the pressure accumulator. The pressure is passed through a miniaturized valve to the locking mechanism. The locking mechanism consists of a double-acting cylinder whose piston rod acts as a locking pin in the lock mechanism.

However, the invention is not limited thereto: In another embodiment, a single-acting cylinder is provided with spring return.

In another embodiment, it may be provided that instead of a locking pin, the locking bolt of the lock itself is hydraulically (fluidically) controlled.

To release the closing mechanism, the cylinder is driven in the opposite direction and the displaced hydraulic fluid is introduced into a reservoir.

The invention has the advantage that locking energy is obtained which is used directly and without power for driving a lock mechanism and is not based on electromechanical principles.

The main advantage of the system is that the speed of a linear movement or a rotary motion has no influence on the efficiency of the energy conversion. So it does not matter how fast the button is pressed or how fast the knob is turned.

Since the energy is cached, the remaining stored energy can be used to open the lock mechanism without further user interaction. It is also conceivable to drive other equipment, such as the drive of a miniature turbine with a generator connected thereto, on the then still additional electrical energy can be obtained for the drive circuit of the entire lock mechanism.

The subject of the present invention results not only from the subject matter of the individual claims, but also from the combination of the individual claims with each other.

All information and features disclosed in the documents, including the abstract, in particular the spatial design shown in the drawings, are claimed to be essential to the invention insofar as they are novel individually or in combination with respect to the prior art.

In the following the invention will be explained in more detail with reference to drawings showing only one embodiment. Here are from the drawings and their description further features essential to the invention and advantages of the invention.

Show it:

1 : Schematically illustrates a block diagram of the invention for a hydraulic lock mechanism for a cabinet lock

2 an explanation of how the locking pin after 1 is related to the locking latch

3 : a diagram of hydraulic energy over time with representation of recovered and consumed hydraulic energy

4 : Schematically a modification to the linearly moved actuator after 1 wherein a rotary knob is shown

In 1 there is the actuator 1 from a linearly movable push button 2 pointing in the direction of the arrow 46 in a lock plate on a cabinet door 52 (please refer 2 ) is pressed.

The mechanical energy generated by the actuation is transferred to a force accumulator 5 directed, which is designed for example as a compression spring and which is attached to a stationary support 6 supported.

Instead of such an energy store 5 Other energy storage devices can also be used. Incidentally, it does not come on a power storage 5 on, because he should accomplish only the required provision of the push button. Such a return spring can also in the interior of the cylinder 9 on the pressure side of a piston-cylinder unit 8th be arranged.

About a mechanical deflection 7 , which can be arbitrarily formed, the movement of the push button 2 on the piston rod 11 the piston-cylinder arrangement 8th transferred, with the piston rod 11 directly with a piston 10 connected in the cylinder 9 is freely movable.

By the movement of the piston 10 in the cylinder 9 in the direction of the arrow 46 thus becomes the cylinder space 12 arranged hydraulic fluid compressed while the cylinder chamber 13 is filled with air.

About a valve designed as a check valve 14 the pressure pulse thus generated is transferred to the storage space 19 a pressure accumulator 17 initiated, for example, by an elastic membrane 18 Completed to the atmosphere.

In the storage room 19 the hydraulic energy of the triggered pulse is stored.

The pressure pulse is transmitted via the line 20 to a 3-way valve 21 forwarded, which via an electrical actuator 22 is controlled. The electrical actuation takes place here by a microcontroller 39 that from a power storage 38 is controlled.

In the embodiment according to 1 is additionally indicated that the power storage 38 from the pressure pulse or from the pressure energy from the storage space 19 can be charged.

However, this is not necessary for the solution and is described in more detail as an additional option.

In this case it is envisaged that on the line 20 an electromagnetic valve 35 branches, which is a hydraulic motor 36 which is rotated by the pressure pulse and a generator coupled thereto 37 which, by generating electrical energy, drives the power storage 38 charging.

On this - as I said - the invention is not limited. It can be the entire branch, consisting of the elements 35 . 36 . 37 , eliminated, and as power storage 38 can be used a commercially available battery, however, is claimed to a much lesser extent, because the actual kinetic energy for the operation of the opening and closing elements of the lock cabinet is not applied electrically, but pneumatically and / or hydraulically. The battery only powers the drive circuit, which has a very low power requirement, and thus can have a lifetime of 10 years or more. Usual batteries that are used to power the control circuit and the shutter mechanism have a life of only 2 years.

In the embodiment shown, the 3-way valve 21 over the electrical operation 22 driven, and the line 20 is according to the switching state of the 3-way valve 21 either on the line 47 Branched, so the piston-cylinder arrangement 24 is supplied with pressure. The administration 47 flows into the cylinder chamber 27 the piston-cylinder arrangement 24 and drives the sliding movement of the locking pin 28 on that with a piston 25 connected in the cylinder 26 is arranged freely displaceable.

The locking pin 28 engages with its upper free end in the Arretierungsausnehmung 29 a locking bolt, not shown 30 one. The kind, like the locking pin 28 the locking bolt 30 arrested, is in 2 shown in more detail.

In another embodiment, it may also be provided that instead of the locking pin 28 directly the locking bolt 30 on the piston 25 is attached. It therefore does not come to a locking of the locking bolt 30 with a locking pin 28 but the locking bolt 30 itself is displaced and is thereby inserted into an associated locking recess on the cabinet side of the cabinet and can be disengaged from this.

The return of the piston-cylinder arrangement 24 via the line 23 in the 3-way valve 21 into it.

At the outlet of the 3-way valve 21 is the lead 31 connected to a reservoir 32 opens, which a certain liquid level 33 holds, wherein to the bottom side of the reservoir, the line 34 opens, via a check valve 15 in the cylinder 9 the piston-cylinder arrangement 8th opens.

While the valve 14 in open position, is the valve 15 in closed position and vice versa.

The 2 schematically shows that an actuator 1 , which can be designed as a pressure or as a knob. It will be in the direction of the arrow 48 turning or in the direction of the arrow 46 moved in a shifting manner. The actuator 1 works over one not shown mechanical deflection 7 on the lock bolt 30 which is the actual closing function between the cabinet door 52 and the body 51 performs. For this purpose, there is a guard in the cabinet body 50 provided, in which the locking bolt 30 is engaged in the closed state.

In the open state is the locking bolt 30 by the mechanical actuation of the actuating element 1 from the tumbler 50 pulled out, leaving the closet door 51 is open.

To lock the locking bolt 30 to allow, is provided according to the invention, that the locking pin 28 who in 1 is shown schematically, in an associated locking recess 29 on the locking bolt 30 is retractable. A mechanical actuation of the actuating element 1 for disengaging the locking bolt 30 from his tumbler 50 in the cupboard 51 therefore leads to no result, because the locking bolt 30 through the locking pin 28 is blocked.

Consequently, it is important that the controller 39 about the piston-cylinder arrangement 24 first the locking pin 28 out of engagement with the locking recess 29 in the lock bolt 30 brings, so that at all mechanically by actuation of the actuator 1 can be operated. The locking pin 24 is in the arrow directions 49 in and out.

With released locking pin 28 becomes the locking bolt 30 operated in the open position.

In 3 now the energy production by the hydraulic energy is described in more detail. It is important that the displacement in the piston-cylinder arrangement 8th is chosen so that at a single actuation of the actuating element 1 a relatively large amount of energy generated 40 is gained as hydraulic energy, which is called block in 3 is shown over time.

It is essential that the displacement of the second piston-cylinder unit 24 with the locking pin 28 or alternatively with the locking bolt 30 has a much lower energy consumption, because the hydraulic fluid provides a low cylinder content for a relatively wide displacement path. Therefore, in this piston-cylinder unit, only a small amount of energy 41 consumed as it is in 3 is shown as negative energy.

The energy consumed is drawn upwards and dashed 41 into the block of generated energy 40 drawn in to show that there is a difference energy 42 resulting in the additional production of electricity through the element arrangement of the valve 35 with the hydraulic motor 36 and the generator 37 can be used.

The 4 still shows that when turning the knob 3 on which a handle 4 is arranged, the rotary piston rod 43 for example, a rotation in the direction of the arrow 44 performs, and thereby designed as a screw piston rotary piston 45 in the cylinder 9 the piston-cylinder arrangement 8th in the direction of the arrow 46 emotional.

Thus, it is essential in the invention that, with relatively little effort, a large amount of energy can be obtained, which is only partially consumed by the actuating mechanism, and the excess energy used to generate electrical power.

Furthermore, it is essential that the lock can be operated with a long-lasting battery that has a life of ten or more years, because this battery is only for the control of the microcontroller 39 is used and the actual energy for the actuation of the closing and opening mechanism is applied hydraulically and / or pneumatically.

LIST OF REFERENCE NUMBERS

1

actuator

2

push-button

3

knob

4

handle

5

power storage

6

support

7

mechanical deflection

8th

Piston-cylinder arrangement

9

cylinder

10

piston

11

piston rod

12

cylinder space

13

cylinder space

14

Valve

15

Valve

16

management

17

accumulator

18

membrane

19

storage space

20

management

21

3-way valve

22

electrical actuation

23

management

24

Piston-cylinder arrangement

25

piston

26

cylinder

27

cylinder space

28

locking pin

29

locking recess

30

deadbolt

31

management

32

reservoir

33

liquid

34

management

35

Valve (electromagnetic)

36

hydraulic motor

37

generator

38

power storage

39

microcontroller

40

generated energy

41

spent energy

42

difference energy

43

Rotary piston rod

44

arrow

45

rotary pistons

46

arrow

47

management

48

arrow

49

arrow

50

tumbler

51

corpus

52

cabinet door

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 0911466 B2 [0001]

Claims (10)

Cabinet lock of a multiple cabinet system, in which the lock bolt ( 30 ) with a displacement drive in a tumbler ( 50 ) on the body ( 51 ) is engageable and disengageable, characterized in that at least the displacement drive ( 24 ) for actuating the locking mechanism of the locking bolt ( 30 ) is formed hydraulically or pneumatically. Cupboard lock according to claim 1, characterized in that the mechanical actuating energy for the actuation of the locking elements ( 28 . 30 ) of the cabinet lock, which cause the opening or closing state, by hydraulic or pneumatic drive elements ( 8th ) generated in turn by the mechanical movement of the user-side actuator ( 1 ) are driven at the opening or closing state. Cupboard lock according to claim 1 or 2, characterized in that by the mechanical actuation of a necessary for opening or closing of the cabinet lock actuator ( 1 ) the kinematic energy is generated with which a piston-cylinder unit ( 8th ), which in turn directly or indirectly controls the opening and closing elements ( 28 . 30 ) of the cabinet lock activates and operates. Locker lock according to one of claims 1 to 3, characterized in that the actuating element ( 1 ) formed as a push button which directly or indirectly on a piston rod ( 11 ) of the piston-cylinder unit ( 8th ) and leads to a compression of a hydraulic fluid, which via a check valve ( 14 ) in an accumulator ( 17 ) is initiated. Cupboard lock according to one of claims 1 to 4, characterized in that by the mechanical actuating energy of the actuating element ( 1 ) a first piston-cylinder unit ( 8th ), and the pressure generated in a pressure accumulator ( 17 ) and stored via an electromechanically actuated valve ( 21 ) for driving a second piston-cylinder arrangement ( 24 ) for driving the locking mechanism ( 28 . 30 ) is forwarded. Cabinet lock according to claim 5, characterized in that the valve ( 21 ) as a 3-way valve from a microcontroller ( 39 ) is driven. Cupboard lock according to one of claims 1 to 6, characterized in that in the first piston-cylinder unit ( 8th ) generated pressure via a valve designed as a check valve ( 14 ) as a pressure pulse in the memory space ( 19 ) of a pressure accumulator ( 17 ) is initiated at the output line ( 20 ) the input of the 3-way valve ( 21 ) connected. Locker lock according to claim 7, characterized in that to the output line ( 20 ) of the pressure accumulator ( 17 ) an electromagnetically controlled valve ( 35 ) attaches, via which the pressure medium from the accumulator ( 17 ) to a hydraulic motor ( 36 ), where a generator ( 37 ), which is used to generate electricity and charge a power store ( 38 ) suitable is. Cupboard lock according to one of claims 1 to 8, characterized in that the first piston-cylinder arrangement ( 8th ) has a rotary piston and the actuating element ( 1 ) is designed as a knob which is rotatably connected to the rotary piston. Locker lock according to one of claims 1 to 9, characterized in that the power storage ( 38 ) only the power supply of the microcontroller ( 39 ) and the control of the valves and the energy for the operation of the closing and opening mechanism ( 28 . 30 ) is applied hydraulically and / or pneumatically.

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