FI130503B - Cabinet lock - Google Patents

Abstract

The security level of the device cabinet lock according to the invention is better than previous device cabinet locks. The lock (1) of the device cabinet comprises a turnable latch (2) which is connected to the pivot shaft (3). The blade and the pivot shaft are arranged to turn from the locked position to the open position and vice versa. The turning shaft (3) is connected to the lock cylinder (4), which is arranged to transfer the force caused by turning the key to the turning shaft (3) to turn it and the ram (2). The lock (1) of the appliance cabinet also comprises a rear locking means (5), which are arranged to prevent the pivot shaft (3) and the shaft (2) from turning to the open position in the rear locking position of the rear locking means (5). In addition, the lock (1) of the drawer lock device cabinet comprises the control means (6A, 6B) of the rear locking means (5) to control the rear locking means from the rear locking position to the release position.

Description

Cabinet lock

Engineering

The invention relates to the lock of a sideboard, locker or other cabinet. Trays and cabinets are used, for example, in schools and in the changing rooms of workplaces and sports clubs. = In addition, they are used, for example, = in power plants and telecommunications networks to protect equipment, i.e. in this case we are talking about equipment cabinets.

In this context, the lock of the appliance cabinet also means the lock of the drawer and other cabinets.

Known technology

It is known that the lock of the cabinet is equipped with a lock cylinder. The lock cylinder is turned open with a suitable key. = Lock cylinder — comprises — in the simplest form, an opening of a certain shape, into which a key with a shape 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 appliance cabinet, compartment or other cabinet can be turned open. The key can therefore be, for example, a spindle shaped in a certain way, and the lock cylinder then has corresponding shapes. Or the key is a so-called non-coded key with certain shapes, and the lock cylinder has disadvantages of these shapes

S for. The shapes of the key thus form a certain code by 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 locks of the equipment cabinet cost-effective, in which case 7 25 — their structure is kept simple. Used as a locking element

E a reversible tang usually attached to the lock cylinder. Therefore, the security level of the locks of the cabinet 3 is not necessarily very good.

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Brief description of the invention

The purpose of the invention is to provide an appliance cabinet lock with a better security level than previous appliance cabinet locks. In addition, the aim is to achieve an increase in the safety level in a cost-effective manner.

The device cabinet lock 1 according to the invention comprises a turnable latch 2, which is connected to a pivot shaft 3. The latch and pivot shaft are arranged to turn from the locked position to the open position and vice versa. The turning shaft 3 is connected to the lock cylinder 4, which is arranged to transfer the force caused by turning the key to the turning shaft 3 in order to turn it and the bolt 2. The lock 1 of the device cabinet 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 — rear locking means 5 = in the rear locking position

The rear locking means 5 is arranged to turn from the rear locking position to the release position and vice versa. — Rear locking device = 5 Hike direction = from the rear locking position to the release position is opposite compared to the movement direction of the ram 2 from the locking position — to the open position. In addition, the lock 1 of the cabinet includes a rear locking means 5 with a control mechanism 64, 6B to control the rear locking means from the rear locking position to the release position. The rear locking device 5 comprises a plate 7, which is rotatably connected to the pivot shaft 3. The plate 7 has a control projection 7A, /B control means of the rear locking device

For BA, 6B, and back-up surface 7C. The cabinet lock further comprises a gear wheel 8 which is connected to the pivot shaft 3 and is arranged to turn with the pivot shaft, and a rack 9 with counter-locking surface 9A for rear locking surface 7C and toothing 9B which is connected to the gear wheel 8. e]

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3 Pattern list

S 25 In the following, the invention is described in more detail with reference to the attached figures,

E where o Figure 1 shows an example of a cabinet lock according to the invention,

D Figure 2 shows an example of a device cabinet lock with rear locking, 2 Figure 3 shows an example of a device cabinet lock according to the invention with rear locking unlocked,

Figure 4 shows an example of the device cabinet lock according to the invention with the latch turned to the open position,

Figure 5 shows an example of the device cabinet lock according to the invention, with the rear lock open electrically controlled and the latch turned to the open position,

Figure 6 shows an example of the device cabinet lock according to the invention, locked from the back with the electric control off,

Figure 7 shows an example of the device cabinet lock according to the invention, with the rear lock open electrically controlled,

Figure 8 shows an example of the rear locking locking means of the device cabinet lock according to the invention, and

Figure 9 shows an example of a rear locking plate.

Description of the invention

Figure 1 shows an example of a cabinet lock according to the invention. The device cabinet lock is installed on the inside of the lid / door of the device cabinet, compartment or other cabinet.

The cover or door has holes for lock cylinders 4, 6A. Figure 1 therefore depicts the side of the cabinet lock that is placed against the inner surface of the cabinet, compartment or other cabinet cover/door.

Figure 2 shows an example of a device cabinet lock locked from the back. The lock 1 of the appliance cabinet comprises a turnable latch 2, which is connected to a pivot shaft 3. The latch and pivot shaft are arranged to turn from the locked position to the open position and vice versa.

S The pivot shaft 3 is connected to the lock cylinder 4, which is arranged to move the key

The force due to N turns on the turning shaft 3 to turn it and the shaft 2

S 25 —The lock cylinder is therefore used with a suitable key, which is known in itself.

S The lock cylinder can be made in different ways. In the example of Figure 2, the lock cylinder has a short z and does not necessarily have separate disadvantages. The locking is based on the shapes of the key square and 5 cylinders of the lock cylinder and the corresponding shapes of the key. The lock cylinder is shown in figure 2

In the D example, the combined pivot shaft 3, which can also be an integral part of the lock cylinder.

O 30 — Figure 2 also shows how the reed 2 can be attached to the turning shaft 3. In this example, the turning shaft has two straight surfaces 3A that transmit the turning force from the turning shaft to the reed 2 through its opposite surfaces.

The device cabinet lock 1 also comprises a rear locking means 5, which are arranged to prevent the pivot shaft 3 and the latch 2 from being turned to the open position in the rear locking means 5. The rear locking means 5 is arranged — to turn from the rear locking position to the release position and vice versa. Figure 8 describes one embodiment of the rear locking device in more detail.

The movement direction of the rear locking device 5 from the rear locking position to the release position is opposite compared to the direction of movement of the handle 2 from the locking position to the open position. It is very difficult or even impossible to open the cabinet lock like this. The lock 1 of the device cabinet also comprises the control means 64, 6B of the rear locking means 5 to control the rear locking means from the rear locking position to the release position.

As already stated, figure 8 shows one embodiment of the rear locking device.

The rear locking means 5 comprises a plate 7. Figure 9 shows in more detail one embodiment of the plate. The rear locking device can also be, for example, a cast-tight piece with a central hole, and from which projections come out 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 guide means 6A, GB of the rear locking means and a rear locking surface 7C.

The device cabinet lock also comprises a gear wheel 8, which is connected to the pivot axis 3 and arranged to turn with the pivot axis, and a rack 9 with a counter-locking surface 9A for the rear locking surface 7C and a toothing 9B, which is

M connected to gear wheel 8. The gear wheel is visible only slightly behind plate 7

S in figure 8. The plate has a round mounting hole /E, with which the plate 7 can turn © in relation to the pivot shaft 3, regardless of the position of the pivot shaft. This show

S 25 — the figures show an embodiment in which the plate 7 has two control projections 7A, 7B,

I but it is possible to form such an embodiment with only one a _ control projection. The embodiment of the invention can be, for example, such that either

S plate 7 projections are missing. In this case, only one = control means is used in the lock of the cabinet, even though the figures show an embodiment of two control means.

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In addition, two racks 9, 10 are used in the embodiment of the figures, but it is possible to make an embodiment with only one rack. In the single rack embodiment, the plate 7 only needs to have one rear locking surface 7C. In the two rack-and-pinion design, the plate 7 can have two rear locking surfaces 7C, 7D. So the disc has at least one rear locking surface.

The teeth of the gear wheel go between the teeth 9B of the rack 9, so that when turning the pivot shaft 3 (with a key via the lock cylinder), the rack tends to move linearly. If the plate 7 or another embodiment of the rear locking device is in the rear locking position, its rear locking surface 7C (or 7D) is against the counter locking surface SA (or 104) of the rack, in which case the linear movement of the rack is prevented and at the same time also the turning of the pivot shaft 3 and the ratchet 2.

The lock of the device cabinet is therefore locked at the back. As already stated, the lock of the device cabinet can also have two racks, in which case there can also be two rear locking surfaces. The second rod 10 is also connected to the gear wheel 8 via its toothing 10B.

In the embodiment of the patterns, the toothed bars have double teeth, i.e. both sides of the bar have teeth, but one toothing is enough to achieve the desired function. When using double gearing, another gear wheel can also be arranged on the turning shaft. When using double toothing, the teeth can overlap, as shown in the embodiment of the figures.

The rack 9 (or 10) or the racks 9, 10 do not have to be very long, but it or they can be completely inside the lock body 1A of the cabinet lock, regardless of the positions of the rack. Dashed lines 81 illustrate this in Figure 8. & The rack (or racks) can also be so long that it extends beyond the lock body > 1A. Such a rack (or racks) can be used

I 25 — as an additional latch tal is used to control the additional latch. In this case, the rack does not need to be toothed along its entire length, but the rack 9 can comprise a toothless & section 9C, 100 that extends outside the lock body 1A. In the 2nd embodiment according to the invention, there can therefore be at least one lisdsalpa or master latch controller in addition to the latch 2. 3 As already stated, the plate can have another rear locking surface 7D, in which case

N 30 — rear locking means = comprise a second rack 10 with a second mating surface 10A for the second rear locking surface 7D and a second toothing 108 which is connected to the gear wheel 8. The second rack 10 can also comprise a toothless portion 10 €, which extends outside the lock body 1A.

In order to — get the rear lock open, the locker lock 1 also includes the control means for the rear locking mechanisms 5. The control device can be another lock cylinder 6A or an electronic control device 6B. Figures 2 - 4 describe the use of the lock cylinder 8A as a control device. Figure 2 shows a situation where latch 2 locks the lid/door of an appliance cabinet, drawer or other cabinet. In addition, bars 9, 10 are used in this example to guide additional nuts, which are not shown in the figures. The free ends of the rods can also form additional bolts, if they are arranged to be in the drawer/cabinet frame 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 is a control shape 11, which when turning the second key, i.e. — a key intended 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 has been turned, which has caused the control shape 11 to turn. In this example, the control form is a pin.

In the swing, the control form 11 turns the plate 7 at the same time, causing it to turn away from — the rear locking position. In this case, the rear locking surface 7C, 7D or surfaces of the plate are not against the locking bar or bars, and the key can be turned in the lock cylinder 4. As a result, the lock cylinder and its or its connected turning axis 3 turn, whereby

S is also turned by the pinion 2 and gear 8 or gears connected to the pivot shaft. 2 The gear, on the other hand, moves the bars 9, 10, so that the additional latches also move away

K 25 — from the locking position. Figure 4 describes such a situation. z: From Figures 3 — 4, it can be seen that the direction of movement of the rear locking levers 5, more specifically the direction of movement of the plate 7 to open the rear locking, is opposite to that of the

S 2 movement direction towards the open position. This means that it is not possible to open the lock of the device cabinet by manipulating the pry bar or the rear locking plate. Manipulating the lock is therefore open

N 30 — very difficult or even impossible. Since in these embodiments the parallel directions of the plate and the reed are reversible, the turning directions of the plate and the reed toward the open position are therefore opposite.

Springs for different purposes can also be placed in the lock 1 of the device cabinet.

For example, the spring can be used to pivot the plate / towards the rear locking position, where its rear locking surface(s) is against the mating surface(s) of the rod(s) 9A, 104.

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

Figures 5-7 describe the operation of the electronic control device. The electronic bypass device 6B is arranged to form a power transmission connection from the unit formed by the turning shaft 3 and the ram 2 to the plate / to turn it from the rear locking position to the release position when the key is turned in the lock cylinder 4. In Figure 5, the electric control device 6B has enabled the plate 7 to turn away from the rear locking position, so that the ram 2 and the bars 9, 10 have been able to be moved out of their locked positions.

The embodiment of the figures comprises a control part 12, which is rotatably connected to the lock of the device cabinet, and which is placed between the whole formed by the pivot shaft 3 and the shaft 2 and the electric control device 65. The electronic control device 6B is connected to the control projection 7B by, for example, a screw connection.

The electric control fence 6B is arranged to form a power transmission connection between it and the control part 12 in response to the electric control. The electronic control device 6B is — an electromagnet or — a solenoid. In the embodiment of the figures, an electromagnet is used. When to an electromagnet or other electrical control device

M on the side of the control electric current, it creates an electromagnetic force which

S enables disk 7 to be turned. Figure 6 shows a situation where © the electromagnet is de-energized, and an attempt has been made to turn the lock cylinder 4 with a key.

S 25 — In this case, the turning shaft 3 and at the same time also the reed 2 have turned slightly, but are still there

I in the locking positions, because there is no transmission connection between the control part 12 and the electromagnet. Figure 6 shows the Selva vali 61 control part 12 and the electromagnet

S interval with the control part 12 also turned slightly due to the slight turning of the stick and the turning shaft =. If a control wire is connected to electromagnet 6B, then

N 30 — then the electromagnet creates an electromagnetic field through which

& the electronic control device and the control part are connected to the power transmission. The control part is, for example, iron, in which case the electromagnetic field keeps the control part 12 and the electromagnet (or solenoid) attached to each other. In this case, turning the ratchet and the turning shaft, which therefore also turns the control part 12, turns the plate 7 away from — the rear locking position, as shown in Fig. 7.

As already stated, the plate 7 can comprise a second control projection 7A, 7, in which case the lock of the cabinet can have both a second lock cylinder GA and an electric control device 6B. The second lock cylinder and the electric guide rail are arranged to work with the control projections 7A, 7B, for example, as shown in the figures. Control projections can be shaped — in such a way that they are well suited for use with the control devices intended for them.

In addition, other functions can be achieved with control projections. The figures show, for example, that the control projection 7A intended for the second cylinder lock can also comprise a side projection that works with the microswitch placed in the lock of the device cabinet.

The cabinet lock can have one or two control devices to control the rear locking. — The advantage of the electronic bypass device is that it can be used to control the lock of the cabinet to be out of the back lock, for example at a certain time, when it can be opened using only one key, not the key of the cylinder lock. The advantage of the second cylinder lock is, for example, that the cabinet lock does not need electrification.

The device cabinet lock according to the invention can be implemented in several different ways, such as — can be seen from the above description. The invention enables a better security level of the cabinet lock cost-effectively than in known solutions.

In addition, the invention enables the creation of different cabinet lock variations.

S The invention is therefore not limited to the examples presented in this presentation, but can be implemented in different ways within the scope of the independent claim.

S 25 = a 3 00 &

Claims (9)

Patent Claims 1. An appliance cabinet lock (1) comprising a pivoting bolt (2) which is connected to a pivot shaft (3), which bolt and pivot shaft are arranged to turn from a locked position to an open position and vice versa, which pivot shaft (3) is connected to a lock cylinder (4) , which is arranged to transfer the force caused by turning the key to the turning shaft (3) in order to turn it and the shaft (2), characterized in that the lock (1) of the cabinet includes rear locking means (5) which are arranged to prevent the turning shaft (3) and the shaft (2) from turning in the open position of the rear locking device (5) in the rear locking position, which — the rear locking device (5) is arranged to turn from the rear locking position — to the release position and vice versa, the direction of movement of the rear locking device (5) from the rear locking position to the release position is opposite compared to the direction of movement of the latch (2) from the locking position to the open position, and each cabinet lock ( 1) comprises the rear locking means (5) control means (6A, 6B) to guide the rear locking means from the rear locking position to the release position, which rear locking means (5) comprises a plate (7) which is rotatably connected to the pivot shaft (3), and where the plate (7) has a control projection (7A, 7B) of the rear locking means for the control means (6A, 6B) and the rear locking surface (7C), which cabinet lock further comprises a gear wheel (8) which is connected to the pivot shaft (3) and arranged to rotate with the pivot shaft, and a rack (9) with a counter locking surface (9A), a rear locking surface (7C) and the toothing (9B) which is connected to the gear (8). 2. The cabinet lock according to claim 1, characterized in that the cabinet lock = comprises a lock body (1A), and the rack (9) comprises a toothless section (9C), a which extends outside the lock body (1A). 5 25 3. The cabinet lock according to claim 1 or 2, characterized in that the plate has S a second rear locking surface (7D), and the cabinet lock comprises a second rack (10), = which has a second counter-locking surface (10A) for the second rear locking surface (7D) and another = toothing (10B) which is connected to the gear (8). S 4. The cabinet lock according to claim 3, characterized in that the cabinet lock = 30 — comprises a lock body (1A), and the second rack (10) comprises a toothless N portion (10 C) that extends outside the lock body (1A). 5. Cabinet lock 1 according to one of claims 1 to 4, characterized in that the control means of the rear locking means (5) comprises a second lock cylinder (6A) or an electric control device (6B), which second lock cylinder (6A) is arranged to turn the plate (7) from the rear locking position to the release position when turned another key in the second lock cylinder (6A), and each electric control device (6B) is arranged to form a power transmission connection from the assembly formed by the pivot shaft (3) and the rod (2) to the plate (7) in order to turn it from the rear locking position to the release position when the key is turned in the lock cylinder (4). 6. An appliance cabinet lock according to claim 5, characterized in that the bottom of the second lock cylinder (6A) has a control form (11), which, when the second key is turned, controls the plate (7) via the control projection (7A). 7. Cabinet lock 1 according to claim 5, characterized in that it comprises a control part (12) which is rotatably connected to the cabinet lock, and which is placed between the assembly formed by the pivot shaft (3) and the bolt (2) and the electric control device (6B) , and which electric control device is connected to the control projection (7B), which electric control device (6B) is arranged to form a power transmission connection between it and the control part (12) in response to the electric control. 8. Cabinet lock 1 according to claim 7, characterized in that the electric control device (6B) is an electromagnet or a solenoid. 9. Cabinet lock 1 according to one of claims 5 to 8, characterized in that the plate (7) comprises a second control projection (7A, 7B) and the cabinet lock has both a lock cylinder (6A) and an electric control device (6B), which lock cylinder or electric control device is arranged to work with the second control projection (7A, 7B). O N -— 25 <Q O N I a a O O LO 0 O N