JPH0645016Y2 - Infrared lock for automobile - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle infrared lock, and more particularly to a vehicle infrared lock capable of selectively unlocking a plurality of locks by irradiating infrared rays of a predetermined code.

2. Description of the Related Art As shown in FIG. 5, the infrared light detecting portion of an infrared lock detects infrared light 3 incident on a light receiving window 2 of a light receiving device 1 which houses a light receiving element such as a pin photodiode and an IC circuit. , Drives an infrared lock control device (not shown). FIG. 6 shows a light receiving device 1.
6 is a plan view showing a light receiving range 5 which is a light receiving directional characteristic that spreads in an elliptical shape around the axis 4 of FIG. The light receiving device 1 is arranged on a dashboard 6 of an automobile, which is schematically shown in FIG. 7, and the door lock is locked and unlocked by irradiating infrared rays containing a predetermined code signal from the side and obliquely rear of the automobile 7. . Since the central optical axis of the light-receiving area 5 on the normal line of the light-receiving device 1 is inclined rearward to the right, in the case of a right-hand drive vehicle, locking and unlocking can be done only from the driver's seat side, and cannot be operated from the passenger's seat side. There is. FIG. 8 shows an example in which two light receiving devices 8 and 9 can be used to lock / unlock even from the passenger side. Generally, the optical axes 5a and 5b of the two light receiving devices 8 and 9 are set so as to form an angle of approximately 90 °, and infrared light from a surface including the side and the rear of the automobile 7 can be detected. FIG. 9 shows an example in which the light receiving device 9 is further arranged toward the front of the automobile. By using the three light receiving devices 8, 9, 10 it is possible to detect infrared light from substantially the entire circumferential surface of the automobile 7.

Problems to be Solved by the Invention In these conventional devices, since the light receiving range of the light receiving device is relatively wide, it can be used only for locking and unlocking the door, and cannot be used for individual locking and unlocking of other doors. It was In other words,
It was not possible to lock and unlock multiple locations separately, such as the trunk lid and door. In order to solve such a problem, it is conceivable to use a transmitter that generates a plurality of locking / unlocking signals that generate different code signals, but these transmitters are expensive and complicated.

It is an object of the present invention to provide an automotive infrared lock capable of selectively locking and unlocking a plurality of locks with a simple structure.

[MEANS FOR SOLVING THE PROBLEMS] An infrared lock for an automobile of the present invention is a light receiving device having a transmitter having a light emitting section for generating infrared rays containing a predetermined code signal and a light receiving section for receiving infrared rays generated from the transmitter. And a first or second device mounted on an opening portion of a door or a trunk of an automobile by a control signal of the light receiving device when the light receiving unit of the light receiving device receives infrared rays including a predetermined code signal.
Unlock the lock. The light-receiving device has a first light-receiving device that generates a control signal for controlling the first lock when the first light-receiving part receives an infrared ray containing a predetermined code signal, and a second light-receiving part has a predetermined code. When receiving the infrared light including the signal,
A second light receiving device is included which produces a control signal for controlling the second lock. The first light receiving device forms two light receiving areas 2
A reflection plate that reflects infrared rays incident on one of the reflection surfaces to the first light receiving portion is provided, and the reflection plate has a non-reflection surface that forms an unreceivable area between the two light reception areas. The second light receiving device includes a second light receiving section having a light receiving range in a light receiving range of the first light receiving device.

Further, according to an embodiment of the present invention, a first device including a reflector is provided.
Is provided on the front dashboard of the automobile, and a second light receiving device having a unidirectional light receiving directivity is provided at the rear of the automobile. The side door is locked and unlocked by irradiating the first light-receiving device provided with the reflecting plate with infrared light, and the second light-receiving device having a light receiving directivity in a single direction is irradiated with infrared light and the trunk is opened. Is unlocked.

The reflecting plate having two reflecting surfaces forming two light receiving areas and a non-reflecting surface forming a non-light receiving area formed between the two light receiving areas is provided in the first light receiving device, and the second light receiving device is provided.
By setting the light receiving range of the light receiving device in the non-light receiving range of the first light receiving device, it is possible to prevent the two light receiving devices from operating at the same time when infrared rays are irradiated from the same direction. Further, by disposing the first light receiving device having the reflecting plate on the front dashboard of the automobile and providing the second light receiving device at the rear part of the automobile, the locking and unlocking of the side door and the locking and unlocking of the trunk are the same. It is performed individually by the transmitter.

Embodiment FIG. 1 is a principle diagram of the present invention, in which a first light receiving device 11 having two light receiving areas 12 and 13 is arranged on a front dashboard of an automobile 7, and in addition to the first light receiving device 11. The second light receiving device 17 is provided at the rear of the automobile 7. The second light receiving device 17 responds only to the infrared rays emitted from the region of the light receiving range 18, and the light receiving range 18 is included in the unreceivable range 20 of the first light receiving device 11.

FIG. 2 is an enlarged perspective view of the first light receiving device 11. In the light receiving portion 11a of the first light receiving device 11, two reflection surfaces 14a forming two light receiving areas 12 and 13 and a non-light receiving area 20 formed between the two light receiving areas 12 and 13 are formed. A reflection plate 14 having a reflection surface 14b is provided in a V shape when viewed from a surface perpendicular to the light receiving portion 11a. Further, at the position of the light receiving portion 11a of the first light receiving device 11 corresponding to the apex of the V-shaped reflection plate 14, the reflection plate 14 is provided.
A window 15 is provided for receiving the infrared light 16 reflected by the reflecting surface 14a. The V-shaped reflector 14 has a reflective surface 14
The infrared light 16 emitted from both side surfaces of the automobile 7 by a is reflected toward the light receiving portion 11a of the first light receiving device 11. Also,
The infrared light emitted from the rear of the automobile 7 is blocked by the non-reflecting surface 14b of the reflecting plate 14.

FIG. 3 is a perspective view of an automobile 7 provided with the first and second light receiving devices 11 and 17. Inside the trunk of car 7,
The trunk unlocking actuator 21 which is operated by the control signal of the second light receiving device 17 is mounted. Infrared light including a predetermined code signal is transmitted from a transmitter 19 having a light emitting unit in the rear of the automobile 7, and the light receiving unit 17 of the second light receiving device 17 is transmitted.
When the infrared light is detected at a, a control signal is sent from the second light receiving device 17, and the trunk unlocking actuator is released.
21 is activated and the trunk is unlocked. At the same time, since the infrared ray transmitted from the transmitter 19 is blocked by the non-reflective surface 14b of the reflection plate 14, the infrared ray does not reach the light receiving portion 11a of the first light receiving device 11. Therefore, the control signal is not output from the first light receiving device 11, and the side door is not locked or unlocked. In addition, transmitters 19 are provided on both sides of the automobile 7.
When infrared light including a predetermined code signal is transmitted from the first infrared light receiving device, the transmitted infrared light is reflected by the reflecting surface 14a of the reflecting plate 14 and the reflected infrared light is transmitted through the window 15 to the first light receiving device.
The light is incident on the light receiving portion 11a of 11. As a result, the control signal is output from the first light receiving device 11, and the side doors are locked and unlocked. At this time, the light receiving portion 17a of the second light receiving device 17
Does not detect infrared rays transmitted from the transmitter 19 on both sides of the vehicle 7, the trunk is not unlocked at the same time as the locking and unlocking of the side doors.

FIG. 4 is a perspective view of the rear portion of the sedan-type automobile 7 and shows the second light receiving device 17 arranged on the rear dashboard.

The transmitter 19 used in the above embodiment of the present invention is, for example,
It produces a minimum of 5mW (milliamwatts) and a standard 7.5mW light output at a forward current of 50mA (milliamperes). This on-axis radiant intensity is minimum 12mW / Sr (milliwatt / steradian), standard 2
At 5 mW / Sr, the peak emission wavelength is 945 nm (nanometer) and the response time is 1 μs (microsecond). The current consumption of the light receiving device 1 is 1.1 mA minimum and 2.5 mA maximum, and the low level output voltage is 0.5 V and the high level output voltage is 4.5 V at the reachable distance on the optical axis.

The above embodiment of the present invention can be modified in various ways. For example, in addition to the first light receiving device and the second light receiving device, it is possible to further provide a third light receiving device or a fourth or more light receiving device for individually controlling the third mirror. A reflector may be provided on the second and subsequent light receiving devices. The first light receiving device can also be attached to the ceiling in the vehicle compartment. You may provide the 2nd or 3rd light receiving device which locks / unlocks the locking / unlocking actuator for backdoors provided in the rear door of a van type vehicle. Further, although the side doors are locked and unlocked by a single light receiving device in the above-described embodiment, a light receiving device for detecting infrared light emitted from the front of the vehicle may be further provided.

Effect of the Invention As described above, according to the present invention, there is an effect that an infrared lock for an automobile can be obtained which has a simple structure and can selectively lock and unlock a plurality of positions with a single transmitter.

[Brief description of drawings]

FIG. 1 is a plan view of an automobile equipped with an infrared lock for an automobile of the present invention, FIG. 2 is an enlarged perspective view of a first light receiving device according to the present invention, and FIG. 3 is provided with a light receiving device according to the present invention. FIG. 4 is a perspective view of an automobile, FIG. 4 is a rear perspective view of a sedan type automobile, FIG. 5 is a perspective view of a conventional light receiving device, and FIG. 6 is a plan view showing a light receiving range of the conventional light receiving device. 8 and 9 show schematic plan views of an automobile equipped with one, two and three light receiving devices, respectively. 7: automobile, 11, 17, 22 ... light receiving device, 14 ... reflector, 14a ... reflective surface, 14b ... non-reflective surface, 15 ... window, 19 ...
… Transmitter

Claims (4)

[Scope of utility model registration request] 1. A transmitter having a light emitting unit for generating infrared rays containing a predetermined code signal, and a light receiving unit having a light receiving unit for receiving infrared rays generated from the transmitter, wherein the light receiving unit of the light receiving unit has a predetermined unit. In an infrared lock for an automobile, which receives a control signal from the light receiving device to unlock the first or second lock attached to an opening of a door of a car or a trunk when receiving infrared light including a code signal, the light receiving device is , A first light receiving device that generates a control signal for controlling the first lock when the first light receiving portion receives an infrared ray including the predetermined code signal, and the second light receiving portion includes the predetermined code signal The first light receiving device includes a second light receiving device that generates a control signal for controlling the second lock when the infrared light is received, and the first light receiving device receives the infrared light incident on the two reflecting surfaces forming the two light receiving ranges. Reflector that reflects to the light receiving part The reflection plate has a non-reflective surface that forms an unreceivable range between two light receiving ranges, and the second light receiving device has a second light receiving part having a light receiving range in the unreceivable range of the first light receiving device. Infrared lock for automobiles, characterized by being equipped with. 2. A vehicle according to claim 1, wherein the first light receiving device is provided substantially at the center of the front dashboard of the vehicle, and the second light receiving device is provided at the rear of the vehicle. Infrared lock. 3. The side door is unlocked when the two reflecting surfaces of the reflector of the first light receiving device are irradiated with infrared light, and the trunk is unlocked when the second light receiving device is irradiated with infrared light. The infrared lock for an automobile according to claim 1, wherein the utility model registration is locked. 4. The infrared lock for an automobile according to claim 1, wherein the first light receiving device is mounted on the ceiling of the vehicle body and registered as a utility model.