JPS61255551A - Audio equipment for mounting on vehicle - Google Patents

Abstract

PURPOSE:To make the ejection of a recording medium easy by providing a control means that supplies an operational voltage to a motor by a command for exhausting the recording medium and to exhaust the medium when the ignition switch is being off and the medium is being loaded. CONSTITUTION:A pack-insertion detecting switch to detect the presence of the recording medium, the first detecting means such as detection circuit DE1, and the second detecting means such as detection circuit DE2 to detect the state of the ignition switch, are provided. When the presence of recording medium is detected by the first detecting means besides the turning-off of the ignition switch is detected by the second detecting means, an operational voltage is supplied to the motor 3 through the control means consisting of a microprocessor CPU, FF, power supply circuit SU etc. under the command for exhausting the recording medium issued by operating an eject-switch, and the medium is exhausted. Therefore, even when the ignition switch is being off, the recording medium can be exhausted by an easy operation.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an improvement in an in-vehicle audio device that reproduces information stored on a recording medium such as a cassette tape or a Cozypact disc, and more particularly relates to an ignition system. In an in-vehicle audio device that is supplied with operating voltage via a switch and uses a motor to eject the recording medium,
The present invention relates to a technology that allows recording media to be ejected even when the ignition switch is off.

[Conventional technology]

In recent years, cassette decks equipped with an autoloading mechanism that uses a motor to automatically load and eject cassette packs have been put into practical use. In this case, there are the following problems. In other words, in-vehicle audio systems are generally supplied with operating voltage through the ignition switch, and when the ignition switch is turned off, all of its functions stop. When the ignition switch is turned off, the cassette bag remains inside the device. Therefore, if it becomes necessary to remove a punctured cassette after the ignition switch is turned off, the ignition switch must be turned on again, which poses a problem of cumbersome operation.

[Problem that the invention seeks to solve]

The present invention solves the above-mentioned problems, and its purpose is to enable the cassette bag to be ejected even when the ignition switch is off.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention provides an in-vehicle device equipped with an ejection mechanism that ejects a recording medium using the driving force of a motor, in response to an operation voltage supplied through an ignition switch and a command to eject the recording medium. a first detection means for detecting the presence or absence of the recording medium in the audio device;
a second detecting means for detecting the state of the ignition switch; and when the first detecting means detects the presence of the recording medium and the second detecting means detects that the ignition switch is off, the recording medium is The recording medium is further provided with a control means for supplying an operating voltage to the motor and ejecting the recording medium in response to a medium ejection command.

[For production]

When the ignition switch is off and a recording medium is installed, the controller is equipped with a control means that supplies operating voltage to the motor and ejects the recording medium in response to a command to eject the recording medium. The recording medium can be easily ejected even in the off state.

〔Example〕

FIG. 1 is a block diagram showing the electrical configuration of an embodiment of the present invention, where CPU is a microprocessor, ME is a memory, DI is an input section, DO is an output section, SU is a power supply circuit,
CV is a constant voltage circuit, OR is a drive circuit, FF is a flip-flop, old to Q7 are transistors, D1 to D4 are diodes, R1-R15 are resistors, S- is an eject switch, and DEI is a back insertion detection switch 13 turned on. When in the state, the output signal is “H”, and when in the off state, the output signal is set to “L”.
DE2 is a detection circuit that outputs an H signal when the ignition switch is on, and L when the ignition switch is OFF; DE2 is a detection circuit that outputs a low signal;
24 is a loading completion detection switch, TAG is a terminal to which operating voltage is supplied from the battery via the ignition switch, and TB is a terminal to which operating voltage is directly supplied from the battery. In addition, when the GK terminal input becomes "H" when both the S and R terminal inputs are "L", the flip-flop FF changes the ζ output to "H" at least one of the S and R terminal inputs.
”.The power supply circuit SU also maintains the flip-flop FFOζ terminal output at “H”.
When the output voltage is "H", the operating voltage directly applied from the battery is supplied to the constant voltage circuit Cv via the terminal TB, and when the ζ terminal output of the flip-flop FF is "L", the supply of operating voltage is stopped. .

In addition, FIG. 2 is a plan view showing the mechanical configuration of the present invention, and FIG.
The figure is a side view of the main part, Figure 4 is a front view of the main part, Figure 5 is a front view of the main part,
FIG. 6 is a left side view of the main part.

In Figures 2 to 6, 1 is the main chassis, 2 is a support plate on which the main parts of the autoloading mechanism are mounted, and it is removably attached to the post 28 erected on the main chassis 1 with screws, etc. It is being

3 is a rogue motor, which is shallowly fitted into a motor positioning opening 2g provided in the horizontal part of the support plate 2;
It is fixed with a holder 12. Further, a worm 4 is attached to the shaft of the motor 3, and this worm 4 is connected to a worm wheel 5b at the lower stage of the two-stage gear 5, which is rotatably inserted into a post 2C erected on the horizontal part of the support plate 2. It meshes with. The upper stage of the two-stage gear 5 is a spur gear 5a, which meshes with the lower spur gear 6b of the two-stage gear 6, which is rotatably mounted on a post 1-2d erected on the support plate 2. Also,
The upper spur gear 6a of the two-stage gear 6 has more teeth than the lower spur gear 6b, and the post 2e is erected on the horizontal part of the support plate 2.
The spur gear 7b of the gear 7 is rotatably inserted into the gear 7. The rotation of the motor shaft is sufficiently decelerated by the two-stage gears 5 and 6.

As shown in the plan view of FIG. 7 and the cross-sectional view of FIG. A guide groove 7C that acts as a cam is formed at the bottom. sector gear 7
The extent of a is about 110° from the center of the axis. Further, as shown in FIG. 9, which shows the side surface of the gear 7 developed, the guide groove 70 is formed such that approximately half of the side surface area 70 including the lower part of the sector gear 7a is horizontal to the gear plane, and the end surface of the sector gear 7a is parallel to the gear plane. A region 71 of a predetermined length from the vicinity is inclined toward the upper surface of the gear 7, and a region 72 is formed horizontally again. The length of the step between the two horizontal regions 70 and 72 defines the descending length of the elevator 18. Furthermore, Figure 7.

In FIG. 8, 7d is an oil-less metal member for smooth rotation with the post 2e.

In a predetermined section, the sector gear 7a meshes with a sector gear 9 rotatably attached to a post l-2f erected on the horizontal part of the support plate 2, and the mesh is released outside the predetermined section. It will be destroyed. One end of the sector gear 9 is secured by a pin 9a between the upper surface of the insertion lever 8 rotatably mounted on the post 2f and the lower surface connected thereto, and the other end is connected to the end of the lower surface of the insertion lever 8. The coiled spring 10 is locked by the barbed portion provided in the
The sector gear 9 and the insertion lever 8 rotate together. However, if the insertion lever 8 stops moving for some reason while the sector gear 9 is rotating counterclockwise, the sector gear 9 will only rotate counterclockwise against the force of the coil spring 10. Rotate to.

Further, a pin 16a at an end of a seesaw lever 16 rotatably attached to a pin 2a at a vertical portion of the support plate 2 is loosely inserted into the guide groove 7c of the gear 7. Since the guide groove 7c of the gear 7 has a horizontal portion and an inclined portion as described above, the pin 16a changes its vertical position according to the rotational position of the gear 7, and rotates the seesaw lever 16 around the pin 2a. make it move. A pin 16b provided at the other end of the seesaw lever 16 is loosely inserted into a hole 17f provided in the right side plate of the elevator holder 17.

A holder 11 is also screwed onto the support plate 2, and a bag insertion detection switch 13 is fixed onto the holder 11. Two contacts 13a, 1 of this switch 13
3b is arranged at a position facing the lower end of the insertion lever 8, and when the ejection of the cassette bank is completed, the lower end is pressed against the contact 13a, and the contacts 13a, 13b
is closed. These contacts 13a and 13b open when the insertion lever 8 rotates slightly clockwise.

The elevator holder 17 holds an elevator 18 into which a cassette bag is inserted and moves the cassette bag in the vertical direction. It is rotatably supported. The elevator 18 has a substantially U-shaped cross section, and the distance between the upper surface and the lower surface is set to be slightly thicker than the thickness of the cassette pack. This elevator 18 is constructed by inserting the folded part 18d into the hole 17c of the elevator holder 17, inserting the folded part 18c into the notch 17b of the elevator holder 17, and inserting the folded part 18d into the notch 17b of the elevator holder 17.
is held in the elevator holder 17 by engaging with a protrusion on the front surface of the elevator holder 17. Further, a holder 21 is attached to the main chassis 1, and a pin 18g of the elevator 18 is loosely inserted into the guide hole 21a of the holder 21.
When the elevator holder 17 rotates toward the main chassis 1, the elevator 18 connects the pin 18g and the guide hole 2.
1 Move up and down guided by a. elevator 1
When 8 is located at the top end, from the top surface of the holder 21,
When it is at the lowest position, it is held horizontally by the main chassis 1 or the inserted cassette pack. Incidentally, when the elevator 18 descends to the lowest end, the switch operating section 17h provided at the rear of the elevator holder 17 closes the contacts 24a and 24b of the loading completion detection switch 24.

Slider guide openings 17a and 18a are provided on the upper surfaces of the elevator holder 17 and the elevator 18, and the locking portion 22 of the slider 22 made by insert molding is inserted here.
b is fitted, and the slider 22 is inserted into the slider guide opening 1.
It is possible to move by being guided to 7a, 1B&. Since the tip of the slider 22 is provided with an inclined convex portion 22a and the slider 22 is made of a flexible material, the cassette pack can be inserted with the elevator 18 positioned at the uppermost end. Then, the protrusion 22a engages with the hole in the reel hub of the cassette pack. In addition, as shown in FIG. 6, when the elevator 18 is at the lowest position, the slider 22 moves to the rearmost position and the convex portion 22a is separated from the cassette pack surface, which prevents rotation of the reel hub of the cassette pack. There isn't. There is a pack abutting plate 22c at the rear of the slider 22, and the cassette pack is attached to this plate 22c.
2 It is pushed by G and is ejected. A pin 22d provided on the slider 22 is loosely inserted into a guide hole 8a of the insertion lever 8. The movement of the insertion lever 8 is transmitted to the slider 22 via this pin 22d. Further, a reversing spring 23 is provided, one end of which is engaged with the pin 17e of the elevator holder [7], and the other end of which is engaged with the concave ab on the top surface of the slider 22. When the slider 22 is located at the rearmost position, a force is applied to the slider 22 to push it further backward.
It is given to 2. The leaf spring 20 fixed on the elevator holder 17 by the pin 17d has its end 20 a
is bent downward and is inserted into an opening 18b provided on the top surface of the elevator 18. This leaf spring 20 functions to hold down the cassette pack when the elevator 1B descends.

The cassette pack is placed between the top surface of the elevator 18 and the
It is inserted in the direction of arrow A in FIG. 2 and discharged in the direction of arrow B in the same figure. The reason why the return portion 18h is provided at the front end of the elevator 18 is to enlarge the bank insertion hole 18i to facilitate insertion and ejection of the cassette pack. When the cassette bank is lowered, the hole in the reel hub of the pack is inserted into the hub drive shaft 27, the guide post 26 is inserted into the reference hole of the pack, and the capstan 5 is inserted into the capstan insertion hole of the bank. In addition, the plunger 14
operates a link mechanism etc. (not shown), and the magnetic head 4
The link mechanism and the like are housed between the main chassis 1 and the support plate 2. Further, a mechanism (not shown) for transmitting the rotation of the tape running motor 15 to a capstan or the like is housed in the lower part of the support plate 2.

FIG. 10 is an explanatory diagram of the operation of the above embodiment when the ignition switch is in the on state, and the operation of the above embodiment when the ignition switch is in the on state will be explained below with reference to the figure. Note that when the ignition switch is in the on state, operating voltage is supplied from the battery to the drive circuit DR via the ignition switch, the terminal TA, and the constant voltage circuit CV.

[Cassette puncture insertion operation]

■ Cassette pack retraction stage Insert the cassette pack into the pack insertion hole 18 of the elevator 18.
i, the protrusion 22a of the slider 22 fits into the hole of the reel hub at the front of the cassette back, and the front end of the cassette pack abuts the pack abutting plate 22C of the slider 22. If you push the cassette pack further in this state, the slider 22 will move and the insertion lever 8 will be moved by the pin 22d.
rotates clockwise, and the switch 13 is turned off. When the switch 13 is turned off, the output signal of the detection circuit DEI changes from "H" to "L", and the microprocessor CPU changes the output signal of the detection circuit DEI from "H" to "L".
”, a control signal is applied to the drive circuit DR to cause the loading motor 3 to rotate forward. As a result, the second gear 5 is rotated counterclockwise, the second gear 6 is rotated clockwise, and the second gear 6 is rotated clockwise. 7 begins to rotate counterclockwise.

When the gear 7 begins to rotate counterclockwise and the sector gear 7a meshes with the sector gear 9, the sector gear 9. The insertion lever 8 rotates clockwise, and the slider 22 moves rearward while pulling in the cassette puncture. When the cassette puncture reaches a predetermined position (the position where the hole in the reel hub of the cassette puncture is directly above the hub drive shaft 27), the sector gears 7a and 9 are disengaged, and the slider 22 moves, that is, the cassette pack is pulled in. The operation stops. Until this state, the pin 16a of the seesaw bar 16 moves horizontally from point a to point b as shown in FIG. 9, and the seesaw lever 16 does not move. Therefore, the electric heater 18 remains located at the uppermost end.

■Descent stage of cassette pack Even after the sector gears 7a and 9 are disengaged, the gear 7 is rotated counterclockwise by the loading motor 3, and the pin 16a of the seesaw lever 16 is guided from point b in FIG. It moves along the sloped region 71 of the groove 70 toward the zero point. When the pin 16a moves along the slope 11 of the guide groove 7C, the seesaw lever 16 rotates around the pin 2a, and the pin 16b moves toward the main chassis 1 side. Therefore, the elevator holder 17 connected at pin 16b4 is connected to pin 2b.

The main chassis 19a begins to fall toward the main chassis l side, and the elevator 18 descends accordingly.

When the elevator 18 descends to the lowest position, the switch operation fit (17h) of the elevator holder 17 turns on the loading completion detection switch notch 24.Then, the microprocessor CPU detects the loading completion detection switch 24. When it is detected that it is turned on, a control signal is applied to the drive circuit DR to stop the rotation of the motor 3, and a control signal is applied to the plunger 14 to advance the magnetically driven 7-d 40 to the return position.

[Cassette pack ejection operation]

■Cassette pack rising stage To eject the cassette/throat puncture, the operator turns on the eject switch needle. When the eject switch SW is turned on, the transistor 06 is turned off, and accordingly, the transistor Q7 is turned on. When detecting that the transistor Q7 is turned off, the microprocessor CPU first applies a control signal to the plunger 14 to move the magnetic head 40 back to the pause position so that the magnetic head 40 does not interfere with ejecting the cassette pack. do. The microprocessor CPU then applies a control signal to the drive circuit DR to reverse the motor 3. As a result, the two-stage gear 5 begins to rotate clockwise, the two-stage gear 6 begins to rotate counterclockwise, and the gear 7 begins to rotate clockwise, and the pin 16a of the seesaw lever 16 moves to the guide groove 7C in Fig.
is moving from point 0 to point b on the inclined surface of The elevator 18 is raised.The elevator 18 is stopped when the pin +63 of the seesaw lever 16 reaches the horizontal plane of the guide groove 70.The elevator holder 17 is returned to its original position. When starting, the loading completion detection switch 24 is turned off, but the microprocessor CPU ignores this.

■Discharge stage of the bank Node bank Even after the elevator 18 reaches the top, the gear 7 continues to rotate clockwise by the motor 3, and as a result, the sector gear 7a and the sector gear 9, which have been separated until now, are separated. mesh. As a result of this meshing, the sector gear 9 and the insertion lever 8 start rotating counterclockwise, the slider 22 moves forward guided by the slider guide holes 17a and 18a, and the cassette pack moves forward in the slider 22. It is pushed forward by the pack contact plate 22C. When the sector gear 7a further rotates clockwise and the lower end of the insertion lever 8 turns on the bank insertion detection switch 13, the microprocessor 7 CPU controls the ΩJ circuit DR (by adding No. 8). , the elevator 18 will be positioned at the uppermost end.

FIG. 11 is an explanatory diagram of the operation when ejecting the cassette part 7 when the ignition switch is in the OFF state, and the operation will be explained below with reference to the same figure.

Now, if the ignition switch is turned off at time (1), the output signal of the detection circuit DE2 changes from "H" to "L'" as shown in FIG. 11(B).
Changes to Furthermore, if a cassette pack is attached at this time, the pack insertion detection switch 13 is turned off, so the output signal of the detection circuit DEI is "L" as shown in FIG. ”. Therefore, by turning off the ignition switch at time t1, transistor Q1 is turned off.

Transistor Q2 is turned on, and the S terminal input of flip-flop FF changes from "H" to "L" at time t1, as shown in FIG.

Then, at time t2, when the eject switch S- is turned on as shown in (D) of the figure, the ζ terminal output of the flip-flop FF becomes "
The signal changes from "L" to "H" and transistor Q5 is turned on again.

When the flip-flop FPOζ terminal output becomes "H", the power supply circuit SU supplies the operating voltage directly applied from the battery via the terminal TB to the constant voltage circuit Cv, as described above. Further, when detecting that the transistor Q5 is turned on, the microprocessor CPU first applies a control signal to the plunger 14 to retreat the magnetic head 40 to the pause position as shown in FIG. 40 so that it does not obstruct ejection of a punctured cassette. Next, the microprocessor CPU applies a control signal to the drive circuit OR to reverse the motor 3 as shown in FIG. As a result, the two-stage gear 5 begins to rotate clockwise, the two-stage gear 6 begins to rotate counterclockwise, and the gear 7 begins to rotate clockwise. is moved from point C toward point b. Therefore, the operation opposite to (2) is performed, and the pin 16b of the seesaw lever 16 moves away from the main chassis 1, restores the elevator holder 17 to its original position, and raises the elevator I8. This upward movement of the elevator 18 is stopped when the pin 16a of the seesaw lever 16 reaches the horizontal surface of the guide groove 7C.

Even after the elevator 18 reaches the top end, the gear 7 continues to be rotated clockwise by the motor 3, so that the sector gear 7a and the sector gear 9, which were previously separated, mesh with each other. As a result of this meshing, the sector gear 9 and the insertion lever 8 start rotating counterclockwise, the slider 22 moves forward guided by the slider guide holes 17a and 18a, and the cassette pack moves forward in the slider 22. It is pushed forward by the pack contact plate 22c. As the sector gear 7a further rotates clockwise, the puncture insertion detection switch 13 is activated.
is turned on, and the output of the detection circuit DEI changes from L'' to "H" at time t3, as shown in FIG.

When the microprocessor CPυ detects that the output signal of the detection circuit DEI becomes "H", it applies a control signal to the drive circuit DR to stop the motor 3 as shown in FIG. Furthermore, at time t3, the output signal of the detection circuit DEI becomes "H", so that the S terminal input of the flip-flop FF becomes "H" as shown in FIG.
The terminal output becomes "L" as shown in the same figure (E). As a result, the power supply circuit SU stops supplying the operating voltage to the motor 3.

〔Effect of the invention〕

As explained above, in the present invention, the operating voltage is supplied through the ignition switch, and the motor ( In the embodiment, in an in-vehicle audio device equipped with an ejection mechanism that ejects a recording medium using the driving force of a loading motor 3), a pack insertion detection switch 13 that detects the presence or absence of the recording medium; A first detecting means such as a detecting circuit DBl, a second detecting means such as a detecting circuit DE2 detecting the state of an ignition switch, and the first detecting means detects the presence of the recording medium, and the first detecting means detects the state of the ignition switch. When the detection means 2 detects that the ignition switch is off, the microprocessor CPU supplies an operating voltage to the motor according to the recording medium ejection command to eject the recording medium;
Since it is equipped with control means consisting of a knob flop FF, a power supply circuit SU, etc., it has the advantage that the recording medium can be ejected with a simple operation even when the ignition switch is off. Furthermore, in the present invention, when a recording medium is installed and the ignition switch is off, the operating voltage is supplied to the motor only when the recording medium is ejected by an ejection command. Another advantage is that unnecessary power consumption is eliminated.

[Brief explanation of drawings]

Fig. 1 is a Bronk diagram showing the electrical configuration of an embodiment of the present invention, Fig. 2 is a plan view showing the mechanical structure of the embodiment of the invention, Fig. 3 is a right side view of main parts, and Fig. 4 is a front view of the main part, Fig. 5 and Fig. 6 are left side views of the main part, Fig. 7 is a plan view of the gear 7, Fig. 8 is a sectional view of the gear 7, and Fig. 9 is a side development view of the gear 7. ,
FIG. 10 is an explanatory diagram of the operation when the ignition switch is on, and FIG. 11 is an explanatory diagram of the operation when the ignition switch is off. CPU is a microprocessor, the heart is memory, DI is an input section, DO is an output section, SU is a power supply circuit, CV is a constant voltage circuit, DR is a drive circuit, FF is a flip-flop, 01
~Q7 is a transistor, D1 to D4 are diodes, R1
is a loading completion detection switch, T^ is a terminal to which operating voltage is supplied from the battery via the ignition switch, and TB is a terminal to which operating voltage is directly supplied from the battery. Patent Applicant Fujitsu Ten Ltd. Representative Patent Attorney Gobe Tamamushi (one other person) Plan view of gear 7 Figure 7 Cross-sectional view of gear 7 Figure 8 Explanatory diagram of operation at t l t2t3 Figure 11 +1i, taste, $゛

Claims (1)

[Claims] Operating voltage is supplied via an ignition switch,
In an in-vehicle audio device equipped with an ejecting mechanism that ejects a recording medium using a driving force of a motor in response to a recording medium ejection command, a first detection means for detecting the presence or absence of the recording medium; and an ignition switch. a second detecting means for detecting the state of the recording medium; when the first detecting means detects the presence of the recording medium and the second detecting means detects that the ignition switch is turned off, the state of the recording medium is detected; An in-vehicle audio device comprising: control means for supplying an operating voltage to the motor in response to an ejection command to eject the recording medium.