Electric dial key box unlocked by BLE communication

Abstract

To provide an electric dial key box which can be unlocked in emergency by dial collation and prevents dishonest unlocking.SOLUTION: In an electric dial key box, a motor 10 is driven by BLE communication, a worm gear 11 integrated with the motor shaft rotates a worm wheel 14, an operating wire 12 fitted in the side groove of the worm wheel moves, and the lock block is forcibly retreated, so that a latch is put into a position where it can be lowered, and a lid can be opened by pushing a latch push button. When unlocking by dial collation, the lid cannot be opened even if the dial numbers are collated. In this case, by pushing the lower tip of a release lever with a release pin, the release lever rotates clockwise, the upper tip is released from between the lid and a lock plate, and the lock plate moves the lock block in the unlocking direction by the reaction force of the lock plate return spring.SELECTED DRAWING: Figure 8

Description

[Technical field]

[0001] This invention relates to an electric key box that is based on a dial-type key box and uses Bluetooth (BLE communication) to unlock and remove the key using a smartphone. [Background technology]

[0002] Existing dial-type key boxes have a dial with two or more numbers between 0 and 9, and the lid is opened when a set number (PIN number) is entered. However, this is used in emergencies, and normally the lock is opened by driving a motor via external communication.

[0003] In this dial key box, when the dial 5 matches, as shown in Figures 2 and 3, the lock plate 4 fits into groove A provided in the dial 5, causing the lock block 3 to separate from the protrusion of the latch 2, allowing the latch 2 to descend relative to the lid 1. Now, by pressing the latch push button 6 in the direction of the arrow in Figure 2, the latch operating lever 7 rotates as shown in Figure 3, causing the latch 2 to descend and opening the lid 1. When the latch push button 6 is released, the latch 2 rises due to the return force of the latch spring 8.

[0004] In normal times, a dial-type key box can be easily locked and unlocked by external communication from a mobile phone or the like, without the time required to set a PIN number, and in emergencies, it can be unlocked by verifying the dial number. However, in the case of a four-digit key box, it can be unlocked by verifying the dial number 5 10,000 times. There was a need to prevent such unauthorized unlocking. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 5153749 [Patent Document 2] JP 2019-019511 A Summary of the Invention [Problem to be solved by the invention]

[0006] The object of this invention is to provide a lock block for a dial-type key box that can be easily locked and unlocked by motor drive using external communication from a mobile phone or the like without the need to spend time entering a password, and that can be unlocked by matching the dial in an emergency. Electrically move in unlocking direction The structure is reduced to just the actuation wire, motor, worm gear, and worm wheel. space To provide an electric key box which reduces the number of parts and prevents unauthorized unlocking by setting a release lever that blocks the movement of a lock plate that moves a lock block to release a latch. [Means for solving the problem]

[0007] The objective of this project is to incorporate a communications platform with a BLE receiver inside the lid of a dial-type key box, drive a motor via BLE communications, and have a worm gear integrated with the motor shaft rotate a worm wheel, which moves an operating wire fitted into a groove on the side of the worm wheel, opening and closing a lock block. Electrically move in unlocking direction This allows the latch to descend, and when the latch push button is pressed, the lid can be opened. In an electric dial key box, when the lock is released by dial verification, the lid cannot be opened even if the dial is verified. In this case, by pressing the lower end of the release lever with the release pin, the release lever rotates clockwise and the upper end is released from between the lid and the lock plate, and the lock plate releases the lock block due to the reaction force of the lock plate return spring. Forced unlocking This problem is solved by an electric dial key box that is characterized by being movable.

[0008] Furthermore, with the electric dial key box of this invention, the lid of the key box can be closed and a locking signal can be sent via BLE communication to a BLE receiver unit with a built-in BLE communication base in the lid, reversing the motor to lock the door.The release lever is always subjected to a counterclockwise rotational force by a spring, and when the dial is put into an unmatched state, the lock plate moves, creating a gap between the lid and the lock plate, so the lock plate can slide in and automatically lock. Effect of the Invention

[0009] According to this invention, the lock block Electrically move in unlocking direction The structure consists of an operating wire, a motor, a worm gear and a worm wheel, which saves space and requires a very small number of parts.

[0010] According to this invention, the gear is designed to have a portion without teeth so that it will spin freely after rotating a specified amount, preventing overload caused by the motor locking and reducing power consumption.

[0011] According to this invention, the actuating wire mechanism makes it possible to unlock the dial-type key box by motor drive.

[0012] According to this invention, when a four-digit dial is used for unlocking, it is possible to unlock the door by matching the dials 10,000 times. Therefore, a release lever is provided, and even if the dials are aligned, if the release lever is not pressed, the lock plate will not move the lock block in the unlocking direction, thereby preventing unauthorized unlocking.

[0013] According to this invention, the release lever prevents the movement of the lock plate, so that when the dial is checked, there is no contact force between the lock plate and the dial, making it difficult to decode and providing double protection against unauthorized unlocking. [Brief description of the drawings]

[0014] [Figure 1] The external view, rear perspective view, and B-B cross section of the dial key box are shown. [Diagram 2] 1A and 1B are a perspective view and a cross-sectional view of the back of the key box lid showing the arrow direction for pressing the latch push button. [Diagram 3] A perspective view of the back of the key box lid with the latch push button pressed in and a cross-sectional view are shown. [Figure 4] FIG. 2 is a perspective view of a key box lid provided with a BLE receiver of the present invention. [Diagram 5] FIG. 1 is a perspective view showing the opening of a key box lid having a built-in BLE communication infrastructure using a smartphone of the present invention. [Figure 6] 1A-1D show front perspective and cross-sectional side views of a key box disclosing the motor-driven unlocking motion of the present invention. [Figure 7] FIG. 1 shows a cross-sectional side view of a key box disclosing the motor-driven return to lock state aspect of the present invention. [Figure 8] 7A and 7B are front and top views of the gearbox structure corresponding to the locked state of FIG. 6 of the present invention. [Figure 9] 8 shows a front view and a top view of the gearbox structure of the present invention corresponding to the unlocked state of FIG. 7. [Figure 10] 1A and 1B are a front view and a cross-sectional side view of the key box of the present invention, showing a state in which the lock plate does not move even when the dial is matched by using the release lever. [Figure 11] 1A and 1B are a front view and a cross-sectional side view of the key box of the present invention, showing a state in which the release lever has been disengaged from the lock plate and the lock plate has moved the lock block in the release direction. [Figure 12] 1 is a perspective view of the gearbox of the present invention with the gear case B removed. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] This invention provides an electric key box that can be unlocked and the key taken out with a smartphone using Bluetooth (BLE communication) based on a dial key box (Key Keeper Neo). In addition, even if the electric unlocking cannot be performed for some reason, the dial allows it to be unlocked with a PIN number.

[0016] Figure 4 shows the image and appearance of the device with a built-in BLE communication platform, and Figure 5 shows the device unlocked and lid 1 opened via communication via a smartphone or other device.

[0017] Next, a motor-driven unlocking mechanism will be described as a method for unlocking an electric key box.

[0018] Fig. 6 shows the unlocking movement (unlocking even when the dial is in the locked state), in which the motor 10, worm gear 11, worm wheel 14 and operating wire 12 move in the direction of arrow a in a gear box 13 (described later and Fig. 12) housed by gear case A 15 and gear case B 16, causing the lock block 3 to slide in the direction of arrow C, and the latch 2 is ready to descend in the direction of arrow D (Fig. 7). After that, by pressing the latch push button 6 in the same way as in the conventional structure, the latch 2 can be lowered and the lid 1 can be opened.

[0019] FIG. 7 shows the locking movement (putting the dial lock state), in which the motor 10 in the gear box 13 rotates in the reverse direction, causing the operating wire 12 to move in the direction of arrow d, which is the opposite direction to the direction of arrow a in FIG. 6, sliding the lock block 3 in the direction of arrow E and preventing the latch 2 from descending, thereby returning to the locked state (FIG. 6).

[0020] Fig. 8 shows the movement for unlocking the latch 2, and from the locked state of Fig. 6, the worm gear 11 of the motor 10 rotates the worm wheel 14 counterclockwise (arrow f in Fig. 8), causing the left tip G of the operating wire 12 to move in the direction of arrow H along the side groove (which is spiral) of the worm wheel 14. Since the operating wire 12 is supported by a fulcrum I of the gear case A15, the tip J of the operating wire 12 moves in the direction of arrow K (changing from Fig. 8 to Fig. 9). Thereafter, the lock block 3 moves to unlock the latch 2, and the latch 2 is unlocked.

[0021] Figure 9 shows the unlocked state of Figure 7, and from this state, the motor 10 rotates the worm wheel 14 clockwise (arrow m in Figure 9) in the opposite direction, causing the left tip L of the operating wire 12 to move in the direction of arrow M along the side groove (which is spiral) of the worm wheel 14. Since the operating wire 12 is supported by a fulcrum I of the gear case A 15, the tip P of the operating wire 12 moves in the direction of arrow N (Figure 9 changes to Figure 8). Thereafter, the lock block 3 moves to lock the latch 2, and the latch 2 enters the locked state.

[0022] This invention aims to prevent unauthorized unlocking by setting the release lever 18. When unlocking with a four-digit dial, the lock can be unlocked by matching the dial 5 10,000 times, so the release lever 18 is provided and the lock plate 4 will not move the lock block 3 in the unlocking direction unless the release lever 18 is pressed, even if the dials are matched. Also, because the release lever 18 blocks the movement of the lock plate 4, there is no contact force between the lock plate 4 and the dial 5 when matching the dial 5, making it difficult to decode, thus providing double protection against unauthorized unlocking.

[0023] In FIG. 10, the tip S of the release lever 18 before release is set so as to fit between the lid 1 and the lock plate 4, so that even if the groove of the dial 5 matches with the lock plate 4, the lock plate 4 will not move.

[0024] In Figure 11, the release lever 18 is released by pushing the opposite (lower) end Q with the release pin 19, which rotates the release lever 18 in the direction of the arrow R (clockwise) with U as the fulcrum, causing the upper end S to come out from between the cover 1 and the lock plate 4, and the reaction force of the lock plate return spring 9 causes the lock plate 4 to move the lock block 3 in the unlocking direction. After that, the unlocking operation is the same as with the conventional structure. The release lever 18 is constantly subjected to a rotational force by a spring in the direction of rotation of the arrow T (counterclockwise) with U as the fulcrum. When the lock is engaged, the lock plate 4 is pressed by the dial 5, and when a gap is created between the lid 1 and the lock plate 4, the release lever 18 is designed to slide in, automatically locking when the lock is engaged.

[0025] FIG. 12 is a perspective view of the gear box 13, in which the upper part shows the external structure of the gear box 13 and the lower part shows the state with the gear case B16 removed. [Explanation of symbols]

[0026] 1…Lid 2…Latch 3. Lock Block 4 Lock Plate 5 Dial 6 Latch Push Button 7 Latch operating lever 8 Latch spring 9 Lock plate return spring 10 Motor 11 Worm Gear 12 Actuation wire 13 Gearbox 14 Wormwheel 15 Gear Case A 16 Gear case B 17 Return Bar 18 Release lever 19 Release pin 20 Motor power harness 21 BLE receiver 22 Smartphone 23 Case body 24 Dial protection cover 25 Worm wheel side groove

Claims

1. This electric dial key box has a communications base with a BLE receiver built into the lid, and a motor is driven by BLE communication. A worm gear integrated with the motor shaft rotates a worm wheel, which moves an operating wire fitted into the side groove of the worm wheel, electrically moving the lock block in the unlocking direction so that the latch can be lowered. When the latch push button is pressed, the lid can be opened. This electric dial key box has a structure in which, when the key is released by dial matching, the lid cannot be opened even if the dial is matched. In this case, by pushing the lower end of the release lever with the release pin, the release lever rotates clockwise and the upper end comes out from between the lid and the lock plate, and the lock plate forcibly moves the lock block in the unlocking direction due to the reaction force of the lock plate return spring.

2. 2. The electric dial key box according to claim 1, wherein the structure for electrically moving the lock block in the unlocking direction consists only of an operating wire, a worm wheel, a worm gear and a motor.

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