JPH058695A - On-vehicle equipment - Google Patents

Abstract

PURPOSE:To hangingly support a mechanism part in a case by an elastic member normally and automatically, regardless of the installation state of the case. CONSTITUTION:In on-vehicle in which a mechanism part 13 is hangingly supported in a case 11 through an elastic member 14, a rotatable rotation support member 15 in a nearly perpendicular plane on which one end part 14a of the elastic member 14 is installed, a slant angle detection means consisting of an angle sensor 28 and the like for detecting the slant angle of the case 11 and a rotation means consisting of a motor 18 and the like which can put the rotation support member 15 in turning movement so that the upper and lower end parts of the elastic body 14 can be formed on a perpendicular line based on this detection angle are provided. Therefore, the elastic body 14 is always maintained in a perpendicular status and mechanism part 13 is hangingly supported stably, even if the case 11 is slanted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an on-vehicle device such as a CD changer or a CD player mounted on an automobile.

[0002]

9 (A) and 9 (B) are front sectional views and side sectional views, respectively, of a conventional vehicle-mounted device, and FIG. 10 shows a state in which the case shown in FIG. 9 is rotated by 90 °. It is a front sectional view. As shown in FIG. 9, a conventional vehicle-mounted device 1 such as a CD changer has a case 3 fixed to a fixed portion 2 of an automobile and a mechanism supported in the case 3 via elastic members 4 and 4. And a section 5.

The elastic member 4 has a structure in which one end is attached to the case 3 and the mechanical portion 5 is attached to the other end. Therefore, the mechanism portion 5 is in a state of being supported by the elastic member 4 in the case 3.

When the mechanism 5 is supported in the case 3 by the elastic members 4 and 4 as described above, the vibration applied from the automobile is not directly transmitted to the mechanism 5. On the other hand, in the case where such elastic members 4 and 4 are not provided, vibrations from the outside are directly transmitted to the mechanical section 5, and as a result, for example, data recorded on a CD is picked up by an optical pickup (not shown).
Therefore, when trying to read, the tracking operation will not be performed normally.

However, there are cases where it is desired to use the case 3 displaced from the initial state by a predetermined angle, for example, 90 °. In this case, the elastic member 4 as shown in FIG.
When the elastic member 4 remains attached as shown in FIG.
That is, one end 4a of the above is not positioned vertically above the other end 4b. Therefore, in this case, the mechanism portion 5 cannot be supported in the case 3, and the mechanism portion 5 is in contact with the inner wall surface of the case 3. In order to avoid such a state, conventionally, it is necessary to replace the one end portion 4a of the elastic member 4 with another portion (a portion indicated by 3a in FIG. 10) in the case 3 in consideration of the inclined state of the case 3. ..

[0006]

However, there is a drawback in that the work of changing the mounting state of the elastic member 4 is complicated and cannot be dealt with promptly. Further, on a sloping road or the like, the case 3 attached to the inside of the vehicle is also inclined, so that the mechanism portion 5 may come into contact with the inner wall surface of the case 3 as described above. Therefore, the problem that the normal read operation cannot be performed similarly to the above remains unsolved.

Therefore, an object of the present invention is to provide an on-vehicle device which can automatically and normally support a mechanical section by an elastic member regardless of the mounting state of the case.

[0008]

The structure of the present invention for achieving the above object is a vehicle-mounted device in which a mechanism portion is supported in a case through an elastic member, and one end portion of the elastic member is A rotation supporting member that is attached and is rotatable substantially in a vertical plane, an inclination angle detecting unit that detects an inclination angle of the case, and an elastic member of the elastic member based on the detection angle detected by the inclination angle detecting unit. And a rotation means for rotating the rotation support member such that the upper and lower ends are on a vertical line.

[0009]

The function of the present invention having the above-described structure is that the tilt angle detecting means detects the tilt angle when the tilt angle of the case changes. Based on this detection result, the rotation means rotates the rotation support member so that the elastic member is in the vertical direction. In this way, the mechanism is normally supported by the elastic member regardless of the mounting state of the case.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is an external perspective view of a vehicle-mounted device as one embodiment,
2A is an arrow view including a partial cross section indicated by B in FIG. 1, FIG. 2B is a partial cross sectional view taken along the line AA in FIG. 1, and FIG. 3 is an arrow B in FIG.
FIG. 4 is a block diagram showing an electric system of the vehicle-mounted device, as viewed from the direction of the arrow.

The illustrated vehicle-mounted device 10 is a CD changer, and has a door 11 that slides in the direction of arrow C on the operation surface 11a.
The entire case is covered with a case 11 provided with b, and a pair of mounting members 12, 12 is rotatably mounted on both side surfaces 11c, 11c (one of which is not shown) of the case 11.

In the case 11, a reproducing section and an amplifying section for extracting and reproducing an arbitrary CD from an inserted CD pack (a case in which a plurality of CDs are stored in a stacked state) and a CD
Mechanism unit 13 including a drive system such as a motor for controlling the rotation of the motor
And elastic members 14, 14 (one elastic member 14 is not shown) for supporting the mechanism portion 13, and the elastic member 14
A large gear 15 as a rotation supporting member having an upper end 14a in the figure attached thereto and rotatably supported in a vertical plane.
A two-stage gear 16 that is always meshed with the large gear 15, a worm 17 that is meshed with the two-stage gear 16, a motor 18 that rotationally drives the worm 17, and a motor 18 A drive circuit unit 19 whose details will be described later and a sensor 22 for detecting the rotation angle of the large gear 15 are appropriately housed.

The large gear 15 is rotatably arranged coaxially with the shaft portion 12a, which is the center of rotation of the mounting member 12, and is shown at the center of rotation as shown in FIG. 2 (B). A cylindrical shaft portion 15a is formed on the left side surface so as to project therefrom.
A is supported by the bearing member 20. This bearing member 20
Is fitted in a recess formed in the end surface of the shaft portion 12a projecting on the right side surface of the mounting member 12 on the upper side of the mounting member 12. The shaft portion 12a is rotatably supported by a bearing 21 fitted in the case 11. In such a configuration, the mounting member 12 and the large gear 15
And can rotate independently of each other.

As described above, the elastic member 14 has a projecting portion 15b whose upper end portion 14a is projectingly formed from the large gear 15.
The other end portion 14b is attached to a protruding portion 13a formed on the side surface of the mechanism portion 13 so as to protrude. The protruding portion 13a is formed so as to coincide with a straight line passing through the center of gravity of the mechanism portion 13.

The mounting member 12 is formed on the leg portion 12b protruding from the side surface of the case 11, the above-mentioned shaft portion 12a formed on the upper end side of the leg portion 12b in the figure, and the lower end portion of the leg portion 12b. Further, it is provided with a mounting portion 12c to a fixed portion of the automobile, and is rotatable about the shaft portion 12a with respect to the case 11. Further, a screw insertion hole 12e into which the screw 23 is inserted is formed in an intermediate portion of the leg portion 12b, and on the other hand, on the movement locus of the screw insertion hole 12e and on the side surface 11c of the case 11 as shown in FIG. A plurality of female screw portions 11e to 11g are formed at predetermined intervals.

In the above structure, the screw 2 is inserted in the screw insertion hole 12e.
3 is inserted, the inserted screw 23 is a female screw portion 1
It can be screwed into any of 1e to 11g. With such a configuration, the mounting member 12 can be stopped at a predetermined angle with respect to the case 11.

By the way, the motor 18 is driven by the drive circuit unit 1.
Drive control is performed by a drive signal output from 9. As shown in FIG. 4, the drive circuit unit 19 outputs an angle detection sensor 28 that outputs a voltage value corresponding to the tilt angle of the case 11, an output signal of the angle detection sensor 28, and a large output from the sensor 22. Connected to the subsequent stage by an angle calculation unit 24 that calculates how much the motor 18 is rotated in any direction by a pulse signal corresponding to the rotation angle of the gear 15, and a control signal output from the angle calculation unit 24. And a motor drive unit 25 for driving the motor 18.

In the present embodiment, the angle detecting sensor 28 and the angle calculating section 24 constitute an inclination angle detecting means 26 for detecting the inclination angle of the case 11, and the motor 18 and the motor driving section 25 constitute the inclination angle detecting means 26. The rotation means 27 is configured to rotate the large gear 15 so that the upper and lower ends of the elastic member 14 are aligned with the vertical line based on the detected angle detected in (1).

The operation of the vehicle-mounted device 10 having the above configuration will be described with reference to FIGS. 5 and 6. 5 and 6 are explanatory views showing the operating state of the vehicle-mounted device 10 shown in FIG. In the initial use state, as shown in FIG. 2A, the vehicle-mounted device 10 is used in the horizontal state shown in the figure. At this time, the screw 23 is inserted into the insertion hole 23 of the mounting member 12.
It is inserted in e and is screwed to the female screw portion 11e of the case 11. In this usage mode, one end portion 14 of the elastic member 14 is
a is located vertically above the other end 14b. Therefore,
In this state, the mechanism portion 13 is stably supported in the case 11.

Here, in the case where an automobile equipped with the on-vehicle device 10 runs on a steep slope, for example, Case 1
1 inclines to the state shown in FIG. This tilted state is detected by the angle detection sensor 28 that constitutes the tilt angle detection means 26. Based on this detection signal, the angle calculation unit 24 calculates the inclination angle and rotates the large gear 15 so that the elastic member 14 in the inclined state shown in (b) is in the vertical position shown in (c). To calculate the rotation angle. Then, a drive control signal is output to the motor drive unit 25 connected to the subsequent stage. The drive control signal causes the motor drive unit 25 to rotate the motor 18 in either direction. As a result, the large gear 15 is rotated in a direction (counterclockwise direction) in which the elastic member 14 approaches the position shown in (b) from the position shown in (c) above. The rotation state of the large gear 15 is counted by the sensor 22 as the number of teeth thereof.

Then, the angle calculation unit 24 causes the sensor 22 to
The rotation of the motor 18 is stopped when the number-of-teeth signal from Eq. In this way
The elastic member 14 is always held in the vertical state. Even when the case 11 is tilted in the direction opposite to the illustrated state, the large gear 15 is rotationally controlled in the same manner as above,
The elastic member 14 is in a vertical state.

Next, when the vehicle-mounted device 10 is used in a vertical state as shown in FIG. The screw 23 is removed from the female screw portion 11e of the case 11. As a result, the mounting member 12 becomes rotatable about the shaft portion 12a. The mounting member 12 in this case is shown in FIG.
It is in the state shown by middle (d). In this state, the case 11 is rotated counterclockwise.

When the case 11 is rotationally displaced to the position shown in FIG. 6, the screw 23 is screwed into the female screw portion 11g (shown in FIG. 3). When the screw 23 is screwed in, the case 11 is fixed in the state shown in FIG. On the other hand, the elastic member 14 is in the state shown in (e) in FIG. 6, but the inclination angle of the case 11 is detected by the angle detection sensor 28, and the large gear 15 and the elastic member 14 are vertically arranged in the same manner as described above. Rotational drive is controlled so that the state is achieved.

As described in detail above, in the above embodiment,
The elastic member 14 is automatically held in the vertical state by the large gear 15, which is the rotation supporting member, the inclination angle detecting means 26, and the rotating means 27. Therefore, it is possible to omit the complicated work of replacing the one end portion of the elastic member 14 with another portion inside the case 11 each time the mounting posture of the vehicle-mounted device 10 is changed, unlike the conventional case. In addition, the in-vehicle device 1
It is possible to automatically cope with the elastic member 14 so that it is always in the vertical state even when an automobile equipped with 0 travels on a slope. The present invention is not limited to the above-mentioned embodiments, and various modifications can be made within the scope of the gist thereof.

7 and 8 show another embodiment of the on-vehicle device of the present invention. FIG. 7 is a sectional view showing the internal structure of the case, and FIG. 8 is a 90 ° displacement of the case shown in FIG. It is explanatory drawing which shows the made state. In this embodiment, the same parts as those in the above embodiment are designated by the same reference numerals and the description thereof will be omitted. The illustrated on-vehicle device 30 has two large gears 31 and 32, which are arranged in mesh with each other and have the same configuration as the large gear 15, and the other ends are attached to the edges of the large gears 31 and 32, respectively. Elastic members 33 and 34,
A two-stage gear 16 arranged in mesh with the large gear 31, and a worm 17 arranged in mesh with the two-stage gear 16.
A motor 18 that rotationally drives the worm 17, a drive circuit unit 19 that drives and controls the motor 18, and a sensor 22 that detects the rotation angle of the large gear 32 are appropriately housed in the mechanism unit 13.

The drive circuit section 19 has almost the same configuration as that of the above embodiment, but the sensor 22 counts the number of teeth of the large gear 32 driven via the large gear 31 to detect the rotation angle. Is becoming The other structure is similar to that of the above-described embodiment, and therefore the description is omitted.

In this embodiment, unlike the above embodiment, one ends of the elastic members 33 and 34 are attached to the inner wall surfaces 11h and 11i of the case 11, respectively, and the other ends are edges of the large gears 31 and 32. Is attached to the section. In this embodiment, when the case 11 is in the horizontal state shown in FIG. 7, one elastic member 33 is in the vertical direction. Therefore, in such an attached state of the elastic members 33, 34, when the case 11 is in the horizontal state as shown in FIG. 7, the mechanism portion 13 is supported by the one elastic member 33 in the vertical direction. .. At this time, the other elastic member 34 is slackened, and this does not exert the supporting force of the mechanism portion 13.

On the other hand, when the case 11 is displaced in the vertical direction as shown in FIG. 8, the large gears 31, 32 are rotated based on the angle detection sensor 28, and the other elastic member 34 is rotated.
Is rotated so as to be in the vertical state shown in (f). In this case, one elastic member 33 is displaced to the inclined state shown in (g). In this displaced state, the mechanism portion 13 is supported by the other elastic member 34. At this time, one elastic member 33 is in a slackened state, and does not exert a force for supporting the mechanism portion 13. Even the vehicle-mounted device having such a configuration can obtain the same effect as that of the above-described embodiment.

[0029]

According to the present invention described in detail above, one end of the elastic member is attached to the rotary support member which is rotatable substantially in the vertical plane, and the tilt angle detection for detecting the tilt angle of the case. By providing the means and the rotating means for rotating the rotating support member so that the upper and lower ends of the elastic member are on the vertical line based on the detected angle, the elastic member is provided regardless of the mounting state of the case. It is possible to provide an in-vehicle device that can automatically and normally support the mechanism section by the member.

[Brief description of drawings]

FIG. 1 is an external perspective view of a vehicle-mounted device according to an embodiment of the present invention.

2A is an arrow view including a partial cross section indicated by B in FIG. 1, and FIG. 2B is a partial cross sectional view taken along the line AA in FIG.

FIG. 3 is a view from the direction of arrow B in FIG.

FIG. 4 is a block diagram showing an electric system of a vehicle-mounted device as one embodiment.

FIG. 5 is an explanatory diagram showing an operating state of the vehicle-mounted device.

FIG. 6 is an explanatory view showing an operating state of the vehicle-mounted device.

FIG. 7 is a cross-sectional view showing another embodiment of the vehicle-mounted device of the present invention.

8 is an explanatory diagram showing an operating state of the vehicle-mounted device shown in FIG. 7.

9A and 9B are a front sectional view and a side sectional view, respectively, of a conventional vehicle-mounted device.

10 is a front cross-sectional view showing a state where the case shown in FIG. 9 is rotated by 90 °.

[Explanation of symbols]

 11 Case 13 Mechanism Part 14, 33, 34 Elastic Member 15, 31, 32 Large Gear (Rotation Support Member) 26 Inclination Angle Detection Means 27 Rotation Means

Claims (1)

Claim: What is claimed is: 1. An in-vehicle device, wherein a mechanism portion is supported in a case through an elastic member, and one end portion of the elastic member is attached to the in-vehicle device to rotate in a substantially vertical plane. Based on the freely rotatable support member, the inclination angle detecting means for detecting the inclination angle of the case, and the detection angle detected by the inclination angle detecting means, the elastic member is rotated so that the upper and lower ends thereof are on the vertical line. An in-vehicle device, comprising: a rotating means for rotating the dynamic support member.