JPH0633520Y2 - Sonic locking device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a sonic lock device mounted on a door of a house or the like.

[Conventional technology]

Conventional door lock devices include a mechanical lock device using a cylinder lock, and an electric lock that operates by a secret code transmitted by a push button switch. Recently, electric lock devices include a push button switch Instead, there is a sonic lock device that operates by a personal identification number transmitted by a sounding device that produces an electronic sound.

FIG. 6 is a vertical cross-sectional view showing an example of the sonic lock device mounted on the door. A hole is provided in the surface 9 of the door D, that is, the wall surface on the outdoor side, and the microphone 1 is fitted into the hole, and the microphone 1 is attached. The exposed part of is covered with a protective cover 2 that allows sound to pass through, the case 4 of the control unit 3 is attached to the inner wall surface that is the back surface of the door D, and the terminal 6 of the board 5 provided inside the case 4 is attached.
The connector 8 of the electric wire 7 connected to the microphone 1 is fitted to and electrically connected.

Then, the sound wave of the personal identification number of the sounder generated from the outside of the door D is transmitted to the control unit 3 through the microphone 1, and this signal is compared with the personal identification number stored in the control unit 3.
When they match, the control unit 3 issues an unlock command to the electric lock.

[Problems to be solved by the device]

Although the microphone 1 fitted on the surface of the door D is covered with the protective cover 2 having excellent sound permeability, the microphone 1 is gradually exposed to the water or light passing through the protective cover 2 to gradually improve its performance. There was a problem of deterioration.

Further, since a wide range of sound waves are absorbed, there is a possibility that malfunction may occur due to noise.

An object of the present invention is to provide a sound wave locking device capable of protecting a microphone that receives a sound wave from water and light, preventing its deterioration, and preventing malfunction due to noise.

[Means for Solving the Problems]

In order to achieve the above object, in the sonic lock device of the present invention, a sound wave receiving hole is provided on the front surface of the door, and a sound wave transmitting hole is provided on the back surface of the door at a position higher than the sound wave receiving hole, so that both inside and outside walls of the door Is provided with a sound guide tube with one end opening to the sound wave receiving hole, the middle portion bent and rising, and the other end opening to the sound wave sending hole, and a microphone is provided at the outlet end of the sound wave sending hole to receive the sound received by the microphone. A control unit for unlocking the electric lock is provided when the stored personal identification numbers are compared with each other.

[Action]

When a sound wave is generated from the sound generator from the outside of the door based on the secret code, the sound is received by the microphone through the inside of the sound guide tube.

When the signal received by this microphone and the stored personal identification number match, an unlock command is issued from the control unit and the electric lock is unlocked.

Even if the door surface is exposed to water or light, the sound guide tube bends and rises toward the sound wave transmission hole, so the microphone at the exit end of the sound wave transmission hole is not exposed to water or light. , Does not deteriorate over time.

Further, of the sound waves reaching the door surface, only the sound coming from the direction substantially perpendicular to the door surface passes through the sound guide tube and is transmitted to the microphone, so most of general noise is not received by the microphone.

〔Example〕

 An embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a vertical sectional view of a sonic lock device attached to a door D,
2 is a perspective view of the outside of the room, FIG. 3 is a perspective view of the room, and FIG.
FIG. 5 is a block diagram of the control unit, and FIG. 5 is an explanatory diagram showing a usage example of the sound generator.

In FIG. 1, a sound wave receiving hole 10 is provided on the front surface (outer wall surface) 9 of the door D, and the back surface (inner wall surface) 11 of the door D is formed.
A sound wave sending hole 12 is provided at a position higher than the sound wave receiving hole 10.

Rubber pipe support members 13 are fitted to the front surface 9 and the rear surface of the door D in the sound wave receiving hole 10 and the sound wave sending hole 12, respectively.

A large number of grooves are provided around the inner surface of a hole passing through the central portion of the pipe supporting member 13, and both ends of the sound guiding tube 14 are inserted into the inner surfaces of both pipe supporting members 13, respectively.

The inner peripheral surface of the pipe support member 13 is elastically deformed and the sound guiding tube
The sound guide tube 14 is held by pressingly contacting the outer peripheral surface of 14.

The sound guide tube 14 is made of metal or plastic material,
In the case of metal, a flexible bellows tube as shown in FIG. 1 facilitates attachment to the tube support member 13.

The shape of the sound guide tube 14 attached to the tube support member 13 is
The shape is bent upward from the sound wave receiving hole 10 toward the sound wave sending hole 12.

The control unit 3 is attached to the back surface 11 of the door, and the microphone 15 fixed to the substrate 5 of the control unit 3 is located at the exit end of the sound wave transmitting hole 12.

Reference numeral 16 is a battery that serves as a power source for the control unit 3.

A hinge 17 is provided on the door surface 9 above the sound wave receiving hole 10, and an end of a cover 18 is pivotally attached to the hinge 17.

The cover 18 hangs by its own weight to close the sound wave receiving hole 10 (see FIGS. 1 and 2).

Reference numeral 19 in FIG. 2 is a cylinder lock used when a mechanical locking / unlocking device is used together with the sonic lock device, and a lever handle 20 is provided below the cylinder lock.

Reference numeral 21 in FIG. 3 is a thumb turn that is locked and unlocked from the indoor side.

As shown in FIG. 4, in the control unit 3, the receiver 23 is connected to the widening 22 that contacts the microphone 15, and is connected to the receiver 23.
A driver 25 and a relay 26 are connected to the CPU 24, and further connected to a solenoid or a motor 27 which is a drive source of the electric lock.

The operation of the sonic lock device configured as described above will be described.

As shown in FIG. 5, the cover 18 hanging on the surface 9 of the locked door D is lifted to expose the sound wave receiving hole 10, and the sound wave corresponding to the personal identification number is generated by the electronic sound generator built into the wristwatch W. When the sound is transmitted, the sound wave is received by the microphone 15 through the sound guiding tube 14, and the personal identification numbers stored in the control unit 3 are compared. If the two coincide, the solenoid or the motor that is the drive source of the electric lock is compared. Drive power in the unlocking direction is sent to unlock the electric lock.

When the sonic lock device is not used, water or light that hits the door surface 9 is blocked by the sound guide tube 14 that bends and rises, so that it does not reach the microphone 15 and the microphone 15 is protected.

Further, since the cover 18 closes the sound wave receiving hole, protection of the microphone 15 is further ensured.

As for the noise that hits the door surface 9, only the noise that hits the door surface 9 at a right angle enters the sound guide tube 14, but other noises are hard to reach the microphone 15, and the possibility that the control unit 3 malfunctions is extremely low. The effect is further enhanced by closing the sound wave receiving hole 10 with the cover 18 during nonuse.

Further, since the microphone 15 is integrally assembled with the control unit 3 attached to the back surface 11 of the door, the electric wire 7 as shown in the conventional example is unnecessary, and a malfunction occurs due to damage or damage of the electric wire. There is no fear.

Conventionally, a microphone 1 having an unfamiliar thing outdoors is on the door surface 9
However, the microphone 15 of the present invention is located on the back surface 11 of the door, and it is extremely difficult to mischief it from the outside through the sound guiding tube 14.

[Effect of device]

Since the present invention is configured as described above, it has the effects described below.

(1) The problem that the microphone is not exposed to water or light and deteriorates is solved.

(2) There is no risk of the microphone being misled from outside.

(3) Since the microphone is integrally assembled with the control unit, the electric wire as shown in the conventional example is unnecessary, and the malfunction due to the damage of the electric wire is eliminated.

(4) Since the sound collection direction of the microphone is limited, malfunctions due to noise are less likely to occur.

[Brief description of drawings]

1 to 5 show an embodiment of the present invention, FIG. 1 is a longitudinal sectional view of a sonic lock device, FIG. 2 is an outside perspective view of the same, and FIG. 3 is an inside perspective view of the same, FIG. 4 is a block diagram of the control unit, FIG. 5 is an explanatory diagram showing a usage example of the sound generator, and FIG. 6 is a vertical sectional view of a conventional sonic lock device. D ... Door, 3 ... Control part, 4 ... Case, 5 ... Substrate, 9 ... Door surface, 10 ... Sound wave receiving hole, 11 ... Door back surface, 12 ... Sound wave sending hole, 13 ... Pipe support member, 14 ... Sound guide tube , 15 ... Mike,
18 ... cover.

Claims (1)

[Scope of utility model registration request] 1. One end opens to a sound wave receiving hole on the front surface of the door, bends and rises in the door, and the other end opens to a sound wave sending hole provided on the back surface of the door and higher than the sound wave receiving hole. A sound guide tube is provided inside the door, a microphone is provided at the exit end of the sound wave output hole, and a control unit for controlling the electric lock by discriminating between the sound received by the microphone and the stored personal identification number is provided on the rear surface of the door. A sonic lock device characterized by being mounted on a wall.