FI20185001A1 - Cabinet lock - Google Patents

Abstract

The cabinet lock according to the invention has a better security level than the previous cabinet locks. The device cabinet lock (1) comprises a pivotable latch (2) connected to the pivot axis (3). The latch and pivot axis are arranged to rotate from a locked position to an open position and vice versa. The pivot axis (3) is connected to a lock cylinder (4) arranged to transfer the force resulting from the turning of the key to the pivot axis (3) to pivot it and the latch (2). The device cabinet lock (1) also comprises a rear locking means (5) arranged to prevent the pivot axis (3) and the latch (2) from being rotated to the open position in the rear locking position (5). Further, the lock (1) of the locking locker cabinet comprises a locking means (5) for guiding the locking means from the locking position to the release position by a control means (6A, 6B).

Description

Cabinet lock

Engineering

The invention relates to a lock for a device cabinet, compartment or other cabinet. Lockers and cabinets are used, for example, in schools and changing rooms in workplaces and sports halls. In addition, they are used, for example, in power plants and telecommunications networks to protect equipment, in which case we speak of equipment cabinets. In this context, the lock of the equipment cabinet also means the lock of the compartment and the other cabinet 10.

Prior art

It is known that the lock of the equipment cabinet is provided with a lock cylinder. The lock cylinder is turned open with a suitable key. At its simplest, the lock cylinder comprises an opening of a certain shape, to which a key with corresponding shapes fits. When the key is turned, the lock cylinder turns, causing the latch or latch guide attached to the rear end of the lock cylinder to turn from the closed position to the open position and vice versa. When the latch is in the open position, the lid of the cabinet, drawer or other cabinet can be opened. Thus, the key can be, for example, a spindle 20 shaped in a certain way, and the lock cylinder then has corresponding shapes. Or the key is a so-called coded key with certain shapes, and the lock cylinder has disadvantages for these shapes. The shapes of the key thus form a certain code with which the disadvantages of the lock cylinder can be turned to the release position, and thus the lock cylinder can also be turned to the open position. The aim is to make the device cabinet locks cost-effectively, so that their structure is kept simple. A rotatable latch attached to the lock cylinder is usually used as the locking element. Therefore, the security level of the cabinet locks may not be very good.

Brief description of the invention

The object of the invention is to provide a device cabinet lock which has a better level of security than previous device cabinet locks. In addition, the aim is to increase the level of safety in a cost-effective manner.

The device cabinet lock 1 according to the invention comprises a pivotable latch 2 connected to a pivot shaft 3. The latch and the pivot shaft are arranged to pivot from the locking position to the open position and vice versa. The pivot shaft 3 is connected to a lock cylinder 4, which is arranged to transmit the force caused by the pivoting of the key to the pivot shaft 3 in order to pivot it and the latch 2. The cabinet lock 1 also comprises 10 rear locking means 5 arranged to prevent the pivot shaft 3 and the latch 2 from being turned to the open position in the rear locking position of the rear locking means 5. The rear locking means 5 is arranged to pivot from the rear locking position to the release position and vice versa. The direction of movement of the rear locking means 5 from the rear locking position to the release position is opposite to the direction of movement of the latch 2 from the locking position 15 to the open position. In addition, the device cabinet lock 1 comprises rear locking means 5 control means 6A, 6B to control the rear locking means from the rear locking position to the release position.

List of figures

The invention will now be described in more detail with reference to the accompanying figures,

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where Figure 1 shows an example of a device cabinet lock according to the invention, Figure 2 shows an example of a cabinet lock locked behind, Figure 3 shows an example of a device cabinet lock according to the invention 25 rear lock open, Figure 4 shows an example of a device cabinet lock according to the invention the latch turned to the open position, Figure 5 shows an example of a device cabinet lock according to the invention the rear lock is open electrically operated and the latch is folded open 30 position,

Figure 6

Figure 7

Figure 8

Fig. 9 shows an example of a device cabinet lock according to the invention with the rear lock with the electric control off, shows an example of a device cabinet lock with the rear lock open electrically controlled, shows an example of a cabinet lock according to the invention with rear locking locking means, and an example of a rear locking means plate.

20185001 prh 02 -01- 2018

Description of the invention

Figure 1 shows an example of a device cabinet lock according to the invention. The cabinet lock is installed inside the cabinet, drawer or other cabinet cover / door. The cover or door has holes for the locking cylinders 4, 6A. Figure 1 thus illustrates a device cabinet lock on the side which is placed against the inside surface of the device cabinet, compartment or other cabinet cover / door.

Figure 2 shows an example of a device cabinet lock with a rear lock. The device cabinet lock 1, comprises a pivotable latch 2 connected to a pivot shaft 3. The latch and the pivot shaft are arranged to pivot from the locking position to the open position and vice versa. The pivot shaft 3 is connected to a lock cylinder 4, which is arranged to transmit the force caused by the pivoting of the key to the pivot shaft 3 in order to pivot it and the latch 2.

The lock cylinder is thus operated with a suitable key, which is known per se. The lock cylinder can be made in different ways. In the example of Figure 2, the lock cylinder is short and does not necessarily comprise separate disadvantages. The locking is based on the shapes of the key opening and the cylinder of the lock cylinder and the corresponding shapes of the key. In the example of Figure 2, a pivot shaft 3 is connected to the lock cylinder, which can also be an integral part of the lock cylinder.

Figure 2 also shows how the latch 2 can be attached to the pivot shaft 3. In this example, there are two straight surfaces 3A of the pivot shaft which transmit a pivot force from the pivot shaft to the latch 2 through its mating surfaces.

The device cabinet lock 1 also comprises rear locking means 5, which are arranged to prevent the pivot shaft 3 and the latch 2 from being turned to the open position by the rear locking means 30 5 in the rear locking position. The rear locking means 5 is arranged to pivot

20185001 prh 02 -01- 2018 from the rear locking position to the release position and vice versa. Figure 8 illustrates in more detail an embodiment of the rear locking means.

The direction of movement of the rear locking means 5 from the rear locking position to the release position is opposite to the direction of movement of the latch 2 from the locking position to the open position. Thus, by manipulating the 5 cabinet lock open, it is very difficult or even impossible. The device cabinet lock 1 also comprises a rear locking means 5 for controlling the rear locking means 6A, 6B from the rear locking position to the release position.

As already stated, Fig. 8 shows an embodiment of the rear locking means. The rear locking means 5 comprises a plate 7. Figure 9 shows in more detail an embodiment of the plate 10. The rear locking means can also be, for example, a molded part with a central hole, from which protrusions extend in different directions.

The plate is pivotally connected to the pivot shaft 3, and the plate 7 has a guide projection 7A, 7B for the rear locking means control means 6A, 6B and a rear locking surface 7C. The cabinet lock further comprises a gear 8 connected to the pivot shaft 15 3 and arranged to pivot with the pivot shaft, and a rack 9 with a mating locking surface 9A for the rear locking surface 7C and a toothing 9B communicating with the gear 8. The gear is only slightly shown behind the plate 8 in Fig. 8. The plate has a circular mounting hole 7E, so that the plate 7 can pivot relative to the pivot axis 3, regardless of the position of the pivot axis. The figures of this representation 20 show an embodiment in which the plate 7 has two control projections 7A, 7B, but it is possible to form such an embodiment with only one control projection. An embodiment of the invention may be, for example, such that one of the projections of the plate 7 is missing. In this case, only one control means is used in the device cabinet lock, although the figures show an embodiment of two control means.

In addition, in the embodiment of the figures, two racks 9, 10 are used, but it is possible to make an embodiment with only one rack. In the embodiment of one rack, the plate 7 only needs to have one rear locking surface 7C. In the embodiment of the two racks, the plate 7 may have two rear locking surfaces 7C, 7D. The plate thus has at least one rear locking surface.

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The teeth of the gear wheel go between the teeth 9B of the rack 9, whereby when the pivot shaft 3 is turned (with a key via a lock cylinder) the rack tends to move linearly. If the plate 7 or other embodiment of the rear locking means is in the rear locking position, its rear locking surface 7C (or 7D) is against the counter-locking surface 9A (or 10A) of the rack 5, whereby the movement of the rack is linearly prevented and the pivot shaft 3 and latch 2 are rotated. The cabinet lock is therefore locked at the rear. As already stated, the cabinet lock may also have two racks, in which case there may also be two rear locking surfaces. The second rod 10 is also connected to the gear 8 via its toothing 10B.

In the embodiment of the figures, the racks have double teeth, i.e. both edges of the rod have teeth, but one tooth is sufficient to achieve the desired function. When using double teeth, a second gear can also be arranged on the pivot shaft. When using double teeth, the teeth may overlap, as shown in the embodiment of the figures.

The rack 9 (or 10) or racks 9, 10 need not be very long, but it or they may be completely inside the lock body 1A of the cabinet lock, regardless of the position of the rack. The dashed lines 81 illustrate this in Figure 8. The rack (or racks) may also be so long as to extend beyond the lock body 1A. Such a rack (or racks) may be used as an additional latch or used to guide the additional latch. In this case, the rack does not need toothing along its entire length, but the rack 9 may comprise a toothless portion 9C, 10C extending outside the lock body 1A. Thus, in an embodiment according to the invention, in addition to the latch 2, there may be at least one additional latch or additional latch guide.

As already stated, the plate may have a second rear locking surface 7D, the rear locking means 25 comprising a second rack 10 having a second mating locking surface 10A for the second rear locking surface 7D and a second toothing 10B communicating with the gear 8. The second rack 10 may also comprise a toothless portion 10C extending outside the lock body 1A.

In order to open the rear lock, the cabinet lock 1 also comprises control means for the rear locking means 5. The control means may be a second lock cylinder 6A

20185001 prh 02 -01- 2018 or electronic control device 6B. Figures 2-4 illustrate the use of the lock cylinder 6A as a control means. Figure 2 shows a situation in which the latch 2 locks the lid / door of a device cabinet, compartment or other cabinet. In addition, rods 9, 10 are used in this example to guide additional latches not shown in the figures. The free ends of the rods can also form additional latches if they are arranged to be in the frame of the compartment / cabinet during locking.

The second lock cylinder 6A is arranged to turn the plate 7 from the rear locking position to the release position when turning the second key in the second lock cylinder 6A. At the bottom of the second lock cylinder 6A there is a control shape 11 which, when turning the second key, i.e. 10 keys for use in the second lock cylinder, controls the plate 7 via the control projection 7A. Figure 3 shows a situation where the second key is turned, which causes the control mode 11 to turn. The control mode in this example is a pin.

When turning, the control mode 11 simultaneously turns the plate 7, whereby it pivots out of the rear locking position 15. In this case, the rear locking surface 7C, 7D or surfaces of the plate are not against the locking rod or rods, and the key can be turned in the lock cylinder 4. As a result, the lock cylinder and its or its pivot shaft 3 pivot, the pivot 2 and gear 8 or gears connected to the pivot shaft. The gear, in turn, moves the rods 9, 10, whereby the additional latches also move out of the locking position 20. Figure 4 illustrates such a situation.

It can be seen from Figures 3 to 4 that the direction of movement of the rear locking means 5, more specifically the direction of movement of the plate 7 for opening the rear lock, is opposite to the direction of movement of the latch 2 towards the open position. This means that the cabinet lock cannot be opened by manipulating the latch or the rear locking plate. Thus, manipulating the lock open is 25 very cumbersome or even impossible. Thus, in these embodiments, the directions of movement of the plate and the latch are reversible, the directions of rotation of the plate and the latch toward the open position are thus opposite.

Springs for different purposes can also be placed in the lock 1 of the equipment cabinet. For example, the spring can be used to pivot the plate 7 towards the rear locking position 30, where its rear locking surface (s) abuts the mating surface (s) 9A, 10A of the rod (s).

20185001 prh 02 -01- 2018

The spring or springs can also be used to hold the latch 2, the rods 9, 10 and the central shaft 3 in the locking position

Figures 5-7 illustrate the operation of the electronic control device. The electric control device 6B is arranged to make a transmission connection from the assembly formed by the pivot shaft 3 and the latch 2 to the plate 7 to turn it from the rear locking position to the release position when turning the key in the lock cylinder 4. out of their locking positions.

The embodiment of the figures comprises a control part 12 pivotally connected to the lock of the equipment cabinet and placed between the assembly formed by the pivot shaft 3 and the latch 2 and the electric control device 6B. The electric control device 6B is connected to the control projection 7B, for example by means of a screw fastening.

The electric control device 6B is arranged to establish a power transmission connection between it and the control section 12 in response to the electric control. The electric control device 6B is an electromagnet or a solenoid. In the embodiment of the figures, an electromagnet is used. When a control electric current is applied to an electromagnet or other electrical control device, it produces an electromagnetic force which allows the plate 7 to be turned. Fig. 6 shows a situation in which the electromagnet is de-energized and an attempt has been made to turn the lock cylinder 4 with a key. In this case, the pivot shaft 3 and at the same time also the latch 2 have pivoted slightly, but are still in the locking positions, since there is no transmission connection between the control part 12 and the electromagnet. Figure 6 shows a clear distance 61 between the guide part 12 and the electromagnet, the guide part 12 also being slightly rotated due to the small rotation of the latch and the pivot shaft. If a control current is applied to the electromagnet 6B, then the electromagnet generates an electromagnetic field through which the electric control device and the control part are in transmission. The control part is, for example, iron, whereby the electromagnetic field holds the control part 12 and the electromagnet (or solenoid) together. In this case, turning the catch and the pivot shaft, which thus also pivots the guide part 12, pivots the plate 7 away from the rear locking position, as shown in Fig. 7.

As already stated, the plate 7 may comprise a second control projection 7A, 7, whereby the lock of the device cabinet may have both a second lock cylinder 6A and an electrical control device 6B. The second lock cylinder and the electric control device are arranged to operate on the control projections 7A,

7B, for example, as shown in the figures. The control projections can be shaped to be well suited for use with the control means provided for them.

In addition, other functions can be provided with the control projections. For example, the figures show that the control projection 7A for the second cylinder lock may also comprise a side projection which works with a microswitch inserted in the lock of the equipment cabinet.

The cabinet lock may have one or two controls to control the rear lock. 10 The advantage of the electronic control device is that it can control the lock of the device cabinet to be out of the rear lock, for example at a certain time, when it can be opened using only one key, i.e. the cylinder lock key. The advantage of the second cylinder lock is, for example, that the equipment cabinet lock does not need electrification.

The device cabinet lock according to the invention can be implemented in several different ways, as can be seen from the above description. The invention enables a better level of security of the device cabinet lock cost-effectively than in known solutions. In addition, the invention makes it possible to create various lock variations of the equipment cabinet.

Thus, the invention is not limited to the examples presented in this presentation, but can be implemented in various ways within the scope of the independent claim.

Claims (9)

The claims A cabinet lock (1) comprising a pivotable latch ( 2) connected to a pivot shaft (3), the latch and the pivot shaft being arranged to pivot from the locking position to the open position and vice versa, the pivot shaft (3) being connected to 5 lock cylinders (4) arranged to transmit the turning force of the key to the pivot shaft (3) Senja for turning the latch (2), characterized in that the device cabinet lock (1) comprises rear locking means (5) arranged to prevent the pivot shaft (3) and the latch (2) from being turned to the open position by the rear locking means (5) in the rear locking position. is arranged to pivot from the rear locking position 10 to the release position and vice versa, the direction of movement of the rear locking means (5) from the rear locking position to the release position is opposite to the direction of movement of the latch (2) from the locking position to the open position. from the rear locking position to the release position. Device cabinet lock according to claim 1, characterized in that the rear locking means (5) comprises a plate (7) pivotally connected to the pivot shaft (3), the plate (7) having a guide projection (7A, 7B) of the rear locking means control means (6A), 6B) and a rear locking surface (7C), the cabinet lock further comprising a gear (8) connected to the pivot shaft (3) and arranged to pivot with the pivot shaft, and a rack (9) with a mating locking surface (9A), a rear locking surface (7C) , and a toothing (9B) in communication with the gear (8). Device cabinet lock according to claim 2, characterized in that the device cabinet lock comprises a lock body (1A), and the rack (9) comprises a toothless portion (9C) extending outside the lock body (1A). 25 Device cabinet lock according to claim 2 or 3, characterized in that the plate has a second rear locking surface (7D), and the device cabinet lock comprises a second rack (10) with a second mating locking surface (10A) for the second rear locking surface (7D) and a second toothing (10B) , which communicates with the gear (8). Device cabinet lock according to claim 4, characterized in that the device cabinet lock 30 comprises a lock body (1A), and the second rack (10) comprises a toothless portion (10C) extending outside the lock body (1A). 20185001 prh 02 -01- 2018 Device cabinet lock 1 according to one of Claims 2 to 5, characterized in that the control means of the rear locking means (5) comprises a second locking cylinder (6A) or an electric control device (6B), the second locking cylinder (6A) being arranged to pivot the plate (7) from the rear locking position to the release position. another key in another 5 in the lock cylinder (6A), and which electrical control device (6B) is arranged to form a power transmission connection from the assembly formed by the pivot shaft (3) and the latch (2) to the plate (7) to turn it from the rear lock position to the release position when turning the key in the lock cylinder (4). Device cabinet lock according to Claim 6, characterized in that the bottom of the second lock cylinder (6A) has a control shape (11) which, when the second key is turned, guides the plate (7) via a control projection (7A). Device cabinet lock 1 according to claim 6, characterized in that it comprises a control part (12) pivotally connected to the device cabinet lock and arranged in an assembly formed by the pivot shaft (3) and the latch (2) and electrically 15 between the control device (6B), and which electrical control device is connected to the control projection (7B), which electrical control device (6B) is arranged to establish a power transmission connection between it and the control part (12) in response to electrical control. Device cabinet lock 1 according to Claim 8, characterized in that the electrical control device (6B) is an electromagnet or a solenoid. Device cabinet lock 1 according to one of Claims 6 to 9, characterized in that the plate (7) comprises a second control projection (7A, 7B) and the device cabinet lock has both a locking cylinder (6A) and an electric control device (6B). is arranged to operate with the second control projection (7A, 7B).