JPH0219319Y2 - - Google Patents

Description

[Detailed explanation of the idea]

(Field of Industrial Application) The present invention relates to an automobile having a speaker device for both inside and outside the vehicle, in which the speaker box installed inside the vehicle can also be used outside the vehicle. This invention relates to an alarm device that issues an alarm when the object is not in a predetermined position under certain conditions. (Prior Art) Four-speaker stereo systems are becoming widely used in automobile stereo systems. In such a four-speaker stereo system for an automobile, the rear speakers are provided at the rear of the vehicle interior. In this case, for example, in the case of a high-roof type passenger car, it is conceivable to use the space under the roof to install the speaker box of the rear speaker in the rear roof part of the vehicle interior. Furthermore, in the case of a hatchback vehicle, if the speaker box is movable so that it can be installed in a position facing the rear of the vehicle, it is possible to open the tailgate and use the stereo device when camping or picnicking. , you will be able to enjoy music outdoors. For this reason, in high-roof type hatchback vehicles, a speaker box is attached to the rear roof of the vehicle interior so as to be rotatable in the vertical direction, as shown in, for example, Japanese Utility Model Application Publication No. 11570/1983. It has been considered that the speaker device can be used both inside and outside the vehicle by tilting the speaker box downward and directing it toward the rear outside the vehicle. (Problem to be solved by the invention) By the way, if the speaker box of a car stereo device is rotated downward and directed toward the rear of the car so that music can be enjoyed even outside the car, the speaker box will be placed outside the car. In the rearward facing position outside the vehicle, it protrudes downward from the roof surface inside the vehicle interior. Therefore, if the vehicle continues to drive without returning the speaker box to its predetermined use position in the vehicle, the speaker box may obstruct rearward visibility and become a hindrance to driving. Therefore, it is desirable to issue an alarm in such a situation. In that case,
Since I sometimes listen to music outside the car while the engine is running and charging the battery, I don't want an alarm to be triggered just by starting the engine even when the speaker box is not in the position of being used inside the car. The present invention was developed in view of the above problem, and its purpose is to prevent the speaker box from being stored in a predetermined position in the vehicle in a car equipped with a movable speaker box. A warning should be issued when the vehicle attempts to drive. Another object of the present invention is to prevent the alarm from being emitted when the tailgate is opened and music is listened to outside the vehicle. (Means for Solving the Problem) In order to achieve this object, the present invention includes a gate position detection means for detecting that the tailgate is closed, and a gate position detection means for detecting that the speaker box is not in a predetermined use position in the vehicle. box position detection means are provided, and signals from these detection means are used to detect the position of the box.
The control circuit is activated to activate the alarm only when the speaker box is not in the in-car use position and the tailgate is closed. (Function) With this configuration, if the tailgate is closed but the speaker box is not returned to the in-vehicle use position, the alarm will issue an alarm. This prevents the vehicle from driving in a state where visibility is obstructed. Additionally, when the car is parked and the tailgate is open, no alarm will be emitted regardless of the position of the speaker box, so you can enjoy music outside the car while the engine is running and the battery is fully charged. It becomes possible. (Example) Hereinafter, an example of the present invention will be described using the drawings. Figures 1 to 3 show an embodiment of a warning device according to the present invention, with Figure 1 being a schematic side view of a car equipped with the warning device, and Figure 2 being an enlarged sectional view of the main parts thereof. be. Moreover, FIG. 3 is an electrical circuit diagram of the alarm device. As is clear from FIG. 1, this automobile M is a high-roof type hatchback vehicle, and a movable speaker box 1 is located on the rear roof portion of the vehicle interior, which is indicated by an imaginary line from the solid line position in the figure. It is mounted so that it can be rotated to any position.
Inside this speaker box 1, speakers 2 are provided on the left and right sides, and when the automobile M is normally running, the speaker box 1 is held at a predetermined in-vehicle use position shown by the solid line in the figure, and the speakers 2 The rear speakers face the interior of the vehicle, allowing you to enjoy 4-speaker stereo music. When listening to music outside the car, the car M is parked, the tailgate 3 is opened, and the speaker box 1 is rotated downward to the outside use position shown by the imaginary line in the figure and projected below the roof part. This allows the speaker 2 to face the rear outside the vehicle, making it possible to enjoy two-speaker stereo music even outside the vehicle. A switch SW ₁ is provided at the rear end of the vehicle body as a gate position detection means, which is turned off when the tailgate 3 is closed and turned on at other times. This switch SW ₁ can also be used as a switch for operating a trunk room light that is turned on when the tailgate 3 is opened. When driving the automobile M, the tailgate 3 is always closed. Therefore, during normal driving, this gate position detection switch _SW1 is always turned off. As shown in FIG. 2, a storage box 4 having a shape matching the speaker box 1 is provided in the rear roof portion of the vehicle interior. A horizontal hinge shaft 5 is provided at the lower rear end of the storage box 4, and the speaker box 1 is supported by the hinge shaft 5 so as to be rotatable in the vertical direction. A locking device 6 is provided at the front end of the speaker box 1, and by engaging the locking device 6 with a striker 7 provided in the storage box 4, the speaker box 1 can be moved to its storage position, i.e., in a car. It is designed to be held in the in-vehicle use position facing the interior. When the locking device 6 is removed from the striker 7, the speaker box 1 is lowered by its own weight and is held at an outside use position facing rearward outside the vehicle as shown by the phantom line. During this time,
Speaker box 1 can be supported by hand, but
A damper or the like may be provided so that it descends slowly under its own weight. Further, the lowering can be controlled remotely using a hydraulic actuator or the like. The storage box 4 is provided with a box position detection switch _SW2 such as a micro switch on its upper surface. This switch SW ₂ is operated by contacting the speaker box 1 when it is stored in a predetermined in-vehicle use position, and is turned on when the speaker box 1 is in the in-vehicle use position.
It is set to be off at all other times. Therefore, in this embodiment, the box position detection switch _SW2 serves as box position detection means for detecting that the speaker box 1 is not in the in-vehicle use position. Further, an alarm device 8 is provided above the front end of the storage box 4. This alarm device 8 is a normal piezoelectric type buzzer, and its sounding body is directed toward the driver's seat side, and a slit 4a is provided in the storage box 4 portion located in the front of the device to ensure sound pressure. . This alarm 8 is integrally assembled with a control circuit 9 for operating it. As shown in FIG.
A power supply terminal a of the engine is connected to a battery B via an ignition switch _SW3 . A capacitor _C1 with one end grounded is connected to this power supply terminal a, and a diode
One end of the resistor _R1 and one terminal s of the alarm device 8 are connected through _D1 . Diodes D ₂ and D ₃ and one end of a resistor R ₂ are connected to the other end of the resistor R ₁ at a connection point p ₁ . diode
The other ends of D ₂ and D ₃ are connected to terminals b and c of the control circuit 9, respectively. A gate position detection switch _SW1 , one end of which is grounded, is connected to this terminal b. In this embodiment, this switch SW ₁ is also equipped with a trunk light TL.
is connected, and its light TL lights up when switch SW ₁ is turned on. Further, a box position detection switch _SW2 whose one end is grounded is connected to the terminal c of the control circuit 9. At _the connection point _p2 , a capacitor _C2 and a Zener diode Z, one end of which is grounded, are connected to the other end of the resistor R2, and the Zener diode Z
, a resistor R ₃ whose one end is grounded and the base of the transistor Tr are connected at a connection point p ₃ . The collector of this transistor Tr is connected to the other terminal t of the alarm 8, and its emitter is grounded. In this way, the alarm device of this embodiment uses a gate position detection switch as a gate position detection means.
SW ₁ , box position detection switch SW ₂ as box position detection means, control circuit 9, and alarm 8
It is composed of. Next, the operation of the alarm device configured in this way will be explained. When the speaker box 1 is stored in the in-vehicle use position, the box position detection switch _SW2 is turned on as shown in FIG. Therefore, the connection point p ₁ is grounded and its potential is zero. That is, no base voltage is applied to the transistor Tr. Therefore, the transistor Tr is not conductive and the alarm 8 is not activated. When the automobile M is stopped and the tailgate 3 is opened, the gate position detection switch SW ₁ is turned on.
Thereby, the connection point p ₁ is also grounded through its switch SW ₁ and its potential is kept at zero. Therefore, the transistor Tr is not conductive and the alarm 8 is still not activated. Then, the speaker box 1 is lowered and the speaker 2 is directed toward the rear of the vehicle.
When the speaker box 1 is lowered, the box position detection switch SW ₂ is switched from on to off, but the operation of the alarm 8 is not affected. thus,
To play stereo music outside the car using a car stereo device. At this time, even if the ignition switch SW ₃ is turned on, the potential at the connection point p ₁ is maintained at 0, so the alarm 8 does not operate. Therefore, the stereo device can be used while the engine is running and battery B is being charged.
Overdischarge of battery B can be prevented. In this embodiment, when the tailgate 3 is opened, the gate position detection switch _SW1 is turned on, and the trunk room light TL is turned on. Of course, this light TL can be turned off using an appropriate switch. When the speaker box 1 is returned to the predetermined in-vehicle use position and the tailgate 3 is closed in order to drive the car M, the gate position detection switch SW ₁ is turned off, but the box position detection switch SW ₂ is turned on. , the potential at the connection point _p1 is kept at 0, and the alarm 8 does not operate. However, if the user forgets to return the speaker box 1 and closes the tailgate 3 while the speaker box 1 remains lowered, both the gate position detection switch _SW1 and the box position detection switch _SW2 are turned off. When the ignition switch SW ₃ is turned on in this state, the current led from the battery B to the power supply terminal a of the control circuit 9 flows to the capacitor C ₂ via the diode D ₁ , the resistor R ₁ and the resistor R ₂ . Charge this. As a result, the potential at the connection point _p2 increases. When the potential at the connection point _p2 rises above the Zener voltage Ez of the Zener diode Z, the Zener diode Z becomes conductive, current flows through the resistor _R3 , and the potential at the connection point _p3 increases. This excites the transistor Tr, and conducts between its collector and emitter. As a result, the alarm 8 is activated and sounds. Note that in this control circuit 9, the capacitor
C ₁ and C ₂ act as filters for noise signals. The above operations can be summarized as shown in Table 1.

【table】

[Table] In the above embodiment, the box position detection switch SW ₂ , such as a micro switch, which is turned on when the speaker box 1 is stored in the in-vehicle use position, is used as the box position detection means. It is also possible to use an appropriate switch or sensor for detecting that the speaker box 1 is in the lowered position. Also, when using the box position detection switch SW ₂ as in the above embodiment, the switch SW ₂ is connected to the striker 7 that the locking device 6 of the speaker box 1 engages with.
It can be provided in parts. If you do that,
As long as the speaker box 1 is not locked, a warning will be issued, and the speaker box 1 will be prevented from lowering while the vehicle is running. If the gate position detection switch SW ₁ , which also serves as the switch for operating the trunk room light TL, is used as the gate position detection means as in the above embodiment, it is possible to prevent an increase in the number of parts. It is also possible to provide each one for exclusive use. Further, as the alarm device 8, in addition to the voltage type buzzer as in the above embodiment, other audible alarm means or visual alarm means can be used. If a visual warning means is used, it should be installed in a location where it can easily be seen by the driver. As the control circuit 9, various circuits other than the one shown in FIG. 3 can be considered. for example,
Logic circuits such as AND circuits activated by respective signals through gate position sensing switch _SW1 and box position sensing switch _SW2 can be used. Further, in the above description, the speaker box 1 is a rear speaker of a four-speaker stereo system, but it may also be a speaker system for a radio. In addition, the speaker box 1 is not only designed to be rotated downward from an in-vehicle use position along the roof of the vehicle interior to an outside use position where it protrudes downward and faces the rear of the vehicle, but also, for example, on the back of the seat back of the rear seat. This alarm device can also be applied to an alarm device that is stored in a side in-vehicle use position and then slid or rotated upward from there to be moved to an outside-vehicle use position. (Effect of the invention) As is clear from the above explanation, according to the invention, an alarm is issued when the speaker box is not returned to the predetermined use position in the vehicle even though the tailgate is closed. Therefore, it is possible to prevent the vehicle from starting with the speaker box obstructing rearward visibility and hindering driving, and driving in such a state can be prevented. Additionally, since the alarm is not activated when the car is parked and the tailgate is open, you can enjoy music outside the car while the engine is running and charging the battery, preventing damage to the battery due to over-discharge. be able to.

[Brief explanation of drawings]

FIG. 1 is a schematic side view showing an embodiment of an automobile equipped with an alarm device according to the present invention, FIG. 2 is an enlarged cross-sectional view showing a housing section of a speaker box of the automobile, and FIG. FIG. 2 is an electrical circuit diagram showing an example of the device. 1...Speaker box, 2...Speaker, 3
...Tailgate, 4...Storage box, 8...
Alarm, 9... Control circuit, SW ₁ ... Gate position detection switch (gate position detection means), SW ₂ ... Box position detection switch (box position detection means), SW ₃ ... Ignition switch.

Claims (1)

[Scope of claim for utility model registration] The rear part of the vehicle body is opened and closed by the tailgate 3,
In an automobile having a speaker device for both inside and outside the vehicle, in which the speaker box 1 is movable between an in-vehicle use position facing the interior of the vehicle and an outside use position facing the outside of the vehicle; when the tailgate 3 is closed; gate position detection means SW ₁ for detecting that the speaker box 1 is not in the in-vehicle use position; and box position detection means SW ₂ for detecting that the speaker box 1 is not in the in-vehicle use position.
According to the signals from these gate position detection means SW ₁ and box position detection means SW ₂ , when the speaker box 1 is not in the in-vehicle use position and the tailgate 3 is closed, the alarm 8 is activated. A warning device for a car having a speaker device for both inside and outside the car, comprising: a control circuit 9;