JPH0617257Y2 - Automotive electronics - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an on-vehicle electronic device such as a car audio.

<Conventional Technology> With the development of electronic technology and microcomputer technology, electronic devices are becoming smaller and more sophisticated. For this reason, more and more electronic devices for using many functions and switches that should be called human interfaces are required. However, the front panel area to be arranged is becoming smaller on the contrary due to the miniaturization, while it is smaller and more multifunctional,
There is a problem that it is impossible to arrange a switch that only uses the multi-functionality.

In particular, in an on-vehicle audio device of a type in which a cassette tape, DAT, or CD as a sound storage medium is inserted from the outside, the space of the insertion port becomes a considerable dead space. Since these insertion ports have a certain size according to the international standard regardless of the size reduction of the main body, the waste space of the insertion port has become a big problem with the downsizing of devices. As a method of solving such a problem, a movable front panel is provided at the front of the insertion slot of a cassette tape, etc., this panel is used for switches, displays, etc., and the front panel is opened as necessary,
A structure has been put into practical use in which an insertion opening hidden in the rear part is exposed on the front face and a tape is taken out.

<Problems to be solved by the invention> However, even if a movable front panel is provided, a mechanism for making it movable must be provided on both sides of the panel, and there is a problem that the panel space cannot be sufficiently expanded. What has a wider space is required.

<Outline of the Invention> The present invention has been made in order to improve the drawbacks of the above-described conventional device, and includes a device main body having an insertion opening for a cassette or the like on the front surface, and an upper end portion provided on the front surface of the device main body. A first panel that can be opened and closed by sliding the lower end in the front-rear direction in the vertical direction, and a lower end side that is pivotally supported by the front surface of the first panel and is openable and closable with respect to the first panel. It is basically characterized in that it has a second panel and a control means for prohibiting opening of the other panel when one panel is in the open state.

<Operation> Since the second panel can be opened and closed with respect to the first panel,
By opening and closing the second panel, both the first panel and the second panel can be used properly, and the space for disposing the operation buttons and the like can be increased. The control means also prohibits a state in which both the first and second panels are open. Therefore, no malfunction occurs.

<Embodiment> An embodiment of the present invention will be described below with reference to the drawings.

In FIGS. 1 to 3, a first panel 2, a second panel 3 and fixed front panels 4, 4 are provided on the front surface of a device body 1. The fixed front panels 4 and 4 are fixed to both sides of the front surface of the device body 1, and an open / eject button 40 and other switches 41 are arranged. The first panel 2 is movably mounted so as to be fitted between the fixed front panels 4 and 4. The first panel 2 has projecting portions 25 projecting to the front side on both sides thereof,
25, and the second panel 3 is mounted between the protrusions 25. An open button 28 and other switches 29 are arranged on the protrusion 25.

A display unit 30 is formed on the front surface of the second panel 3, and is configured to perform the function of the display unit of the function main body 1 when the second panel 3 is closed. Further, switches 31 are arranged at the lower end of the second panel 3.

As the switches 29, 31, and 41, etc., it is desirable to arrange buttons mainly operated, for example, buttons for volume, tape reproduction, stop, feed, and radio reception frequency change.

The second panel 3 is rotatable about its lower end, and as shown in FIG. 1, the switch group 2 of the first panel 2 can be rotated.
As shown in FIG. 2, the switch group 20 is covered with 0.
Can be changed to the exposed state.

As the switch group 20 of the first panel 2 which is covered or exposed by the rotation of the second panel 3, switches which are not always used such as on / off of functions such as equalizer, balance, program selection, preset, and blank skip are used. It is desirable to arrange them. The switch group 2 is also provided on the rear surface side of the second panel 3 which is exposed when the second panel 3 is rotated.
It is desirable to provide 0 '.

An upper end of the first panel 2 is slidable in a substantially vertical direction, and a lower end of the first panel 2 is slidable in a substantially front-rear direction. When the open / eject button 40 is operated, as shown in FIG. From the state where 1 is covered,
As shown in FIG. 3, it is possible to change the insertion opening 10 and the function display portion 11 of the device body 1 to the exposed state and vice versa. Due to this change, the functions of the switches 29, the display unit 30, and the switches 31 do not change at all.
The display and operation can be operated in any state. The mechanism of this transition will be described later.

With the above configuration, in the state shown in FIG.
0 is exposed on the front surface, and the device body 1 is displayed. Further, the normally used open button 28, switches 29, switches 31, open / eject button 40, switches 41, etc. are exposed, and normal operations are possible. In this state, the insertion opening 10 does not appear on the front surface of the device body 1, so that the area becomes wider accordingly.
It is possible to arrange a large number of switches.

The second panel 3 is rotated by operating the open button 28, and this rotation causes the switch group 20 and the second switch group 20 arranged on the first panel 2 as shown in FIG.
The switch group 20 'on the rear surface side of the panel 3 is exposed, and the respective operations can be performed. The space for arranging the switch group 20 and the switch group 20 'cannot be secured at all in the conventional device, and the area for arranging the switches is expanded by the switch group 20 and the switch group 20'. To be done.

Further, when the first panel 2 is slid by operating the open / eject button 40 with the second panel 3 closed, the insertion opening 10 is exposed and the cassette or the like can be attached or detached. It will be possible. As described above, the switches can be operated in this state.

The mechanism for sliding the first panel 2 can adopt various structures, but in this embodiment, a structure using a link mechanism is adopted. This will be described with reference to FIGS. 4 to 7.

Pins 26 are provided so as to project from the upper portions of both sides of the first panel 2, and the pins 26 are slidably fitted in guide grooves 45 formed inside the fixed front panel 4. As shown in FIG. 7, the tip of the pin 26 has a pin receiver 53.
And is configured to move in the vertical direction along the guide groove 45 when the motor 50 is driven via the spiral gear 52 and the gear train 51.

Arms A and B are rotatably connected to the lower inside of the fixed front panel 4 at nodes a and b2 at the lower ends thereof. The tips of the arms A and B are connected to the arm D by a node d and a node b1, respectively, and the arm A, the arm B, the arm D and the node a one node b2.
A four-link mechanism is formed by virtual links connecting the two. The tip of the arm D extends to the lower end of the first panel 2 and is rotatably connected to the lower end of the first panel 2 by an action point Z. The link mechanism is positioned with respect to the fixed front panel 4 at the node a and the node b2, and the operating point Z is configured to move in one degree of freedom.

Now, the distance between each node is expressed as follows: distance between node a-node b = α distance between node d-node b1 = β distance between node b1-node b2 = γ node b2-node a When the distance = δ α>β>γ> δ, the action point Z exhibits a substantially linear movement due to the movement of the link in one degree of freedom. Since the distance between the action point Z and the pin 26 is constant, the pin 26 slides in the guide groove 45 in accordance with the movement of the action point Z, whereby the first panel 2 rolls down the upper end thereof. Meanwhile, the lower end is slid forward.

When the above-mentioned pin receiver 53 is at the upper end, this pin receiver 5
A first limit switch 54 that is actuated by 3 is provided. This is to prevent a malfunction of the operation which may occur due to the second panel 3 being openably and closably provided on the first panel 2. For example, when the open button 28 is pressed for some reason from the state shown in FIG. 3, the first panel 2 and the second panel 3 as shown in FIG.
There is a possibility that both of the first panel 2 and the second panel 3 cannot be operated because both of them are opened.

In order to prevent such a state, a control mechanism described later is provided in this embodiment, and a first limit switch 54 is provided to detect the open / closed state of the first panel 2.

When the first panel 2 is closed, the pin receiver 53 is located at the upper end, so the first limit switch 54 detects this. The signal from the first limit switch 54 makes it possible to know that the first panel 2 is closed.

Next, the opening / closing mechanism of the second panel 3 will be described. As shown in FIG. 9, the second panel 3 is provided with a support shaft 59 on the lower side of both side parts, and the support shaft 59 is fitted to a bearing 63 provided on the inner lower side surface of the first panel 2. By the first panel 2
It is rotatable with respect to. Further, a spring 60 that constantly applies a force in the opening direction and a damper 61 that prevents the sudden opening thereof are provided on the support shaft 59, and the spring 60 is configured to open. . Further, a fixing claw 64 projects upward and downward on the upper surface of the switch surface of the first panel 2, and is locked in a claw hooking hole 65 provided at a corresponding position on the back surface side of the second panel 3, It is configured to maintain the second panel 3 in the closed state.
As shown in FIG. 10, the fixing claw 64 is rotated vertically by a solenoid 66 to engage and disengage the claw hooking hole 65. When unlocked, the second panel 3 is configured to open due to the spring force of the spring 60 described above. A second limit switch 67 is provided below the fixing claw 64, and when the second panel 3 is in the closed state, this switch is turned on to detect the open / closed state of the second panel 3. .

The detection signals of the first limit switch 54 and the second limit switch 67 described above are input to the control device as shown in FIG. Further, operation command signals from the open / eject button 40 and the first panel 28 are also input to the control device. On the other hand, the motor 50 and the solenoid 66 are configured to be controlled by the control device.

The operation of the control device will be described with reference to FIG.

The control device waits for an operation command for the open / eject button 40 and the first panel 28 (steps 70, 7).
4) If the open / eject button 40 is operated, the detection signal from the second limit switch 67 is checked (step 71). This detection signal causes the second
When it is determined that the panel 3 is open, a beep sound indicating an operation error is generated (step 73). On the other hand, if it is determined that the second panel 3 is closed, the eject operation is performed (step 72). At this time, if it is detected that the tape has been removed by the function of the tape mechanism,
The motor is reversed to close the first panel 2.

When an operation signal from the open button 28 is input in step 74, the control device checks the state of the second limit switch 67 and determines whether the second panel 3 is already open (step 75). Second panel 3
If is already open, a beep is emitted to warn (step 79). If it is not open, the state of the first limit switch 54 is checked to check whether the first panel 2 is open (step 76). If the first panel 2 is open, the opening operation of the second panel 3 is prohibited and a beep sound indicating an error is generated (step 7).
8). If the first panel 2 is closed, the opening of the second panel 3 is allowed, the solenoid 66 is driven to release the engagement between the fixing claw 64 and the claw hooking hole 65, and the second panel 3 is opened (step 7).
7).

As described above, it is possible to prevent both the first panel 2 and the second panel 3 from opening and becoming inoperable.

As described above, in the above configuration, since the first panel 2 that covers the insertion opening 10 of the device body 1 is provided, it is possible to increase the installation area of the switches, and further to install the second panel 3 on the first panel 2. Switch group 2 because it is rotatably installed
0, a space for newly installing the switch group 20 'can be set, and the installation space for the switches is dramatically improved.
In addition, normally used switches are arranged on the surface of the protruding portion 25 of the first panel 2, the surface of the second panel 3 or the surface of the fixed front panel 4, and the switches that are not used often are provided on the back side of the second panel 3 or By disposing the switch on the surface of the first panel 2 that is exposed when the second panel 3 is opened, it is possible to properly use the mounting position of the switches, and the operability is improved. Further, a first limit switch 54 and a second limit switch 67 are provided to detect the states of the first panel 2 and the second panel 3 and the control device controls the first panel 2 and the second panel 3.
Since both of them are prevented from being in the open state, it is possible to effectively prevent the inoperable state.

<Effects of the Invention> As described above, the in-vehicle electronic device of the present invention has a device main body having an insertion port for a cassette or the like on the front surface, and is provided on the front surface of the device main body, and the upper end portion is substantially vertically and the lower end portion is A first panel that can be opened and closed by sliding in a substantially front-back direction, and a second panel that is pivotally supported at the lower end side by the front surface of the first panel and that is openable and closable with respect to the first panel. Since it has control means for prohibiting opening of the other panel when the other panel is in the open state, it is possible to increase the installation space for the operation buttons and the like. Further, since the control means prohibits the state in which both the first panel and the second panel are open, no malfunction occurs in the operation, and the operability can be maintained smoothly while increasing the space for the operation buttons. Has the effect of.

[Brief description of drawings]

1 to 3 are enlarged perspective views of a front portion showing an embodiment of the present invention, FIGS. 4 to 6 are side sectional views for explaining the operation, and FIGS. 7 and 8 are link mechanisms. 9 and 10 are explanatory views of the opening / closing mechanism of the second panel, FIG. 11 is a block diagram of the control mechanism, FIG. 12 is a flowchart for explaining the operation, and FIG. It is an explanatory view of a malfunction. 1: Device body, 2: First panel, 3: Second panel, 4:
Fixed front panel, 10: insertion slot, 11: function display section, 20: switch group, 25: protruding section, 26: pin, 2
8: Open button, 29: Switches, 30: Display section, 31: Switches, 40: Open / Eject button, 41: Switches, 45: Guide groove, 50: Motor, 51: Gear train, 52: Spiral gear , 53: pin receiver, 55: worm gear, 56: worm wheel,
59: support shaft, 60: spring, 61: damper, 62:
Damper gear, 63: bearing, 64: fixing claw, 65: claw hook hole, 66: solenoid, 67: second limit switch.

Claims (1)

[Scope of utility model registration request] 1. A device main body having an insertion opening for a cassette or the like on the front surface, and an upper end portion provided on the front surface of the device main body in a substantially vertical direction.
A first panel that can be opened and closed by sliding the lower end in a substantially front-rear direction; and a second panel that is pivotally supported by the front surface of the first panel on the lower end side and that can be opened and closed with respect to the first panel. An in-vehicle electronic device, comprising: a control unit that prohibits opening of one panel when the other panel is in an open state.