JPS60124102A - Inclining device of antenna for car - Google Patents

Abstract

PURPOSE:To raise up/bring down an antenna for a car easily at a place having a low ceiling by rotating/stopping a motor interlocking with a selector gear to raise up/bring down the car antenna. CONSTITUTION:A cam 5b and a pinion gear 5a to be rotated unitedly with a worm wheel 5 meshed with a worm 4 pivoted upon a rotary shaft of a motor 3 are pivoted upon a case 11. The cam 5b has an eccentric shape and a microswitch 2 is abutted to the cam 5b. Hysteresis characteristics are applied to the ON/OFF operation of the switch 2. A segment selector gear 6 meshed with the gear 5a is pivotally fitted to the case 11 pivoted upon an output shaft 7 with about 90 deg. rotatable angle. The potential difference between a potentiometer 20 interlocking with a gear 6 and a potentiometer 21 for setting the angle of a driver's sheet is outputted through an amplifier and the motor 3 is rotated or stopped in the direction turning the potential difference to ''0'', so that the antenna is rotatably held at a required angle.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tilting device for a vehicle antenna in the structure of an antenna base installed on the roof side or rear bumper of an automobile.

Conventionally, when a vehicle with an antenna installed on the roof side or rear bumper enters a place with a low ceiling height, such as a parking lot or railway guard, in order to avoid contact between the antenna and the building, (a) (b) Installing a hinge near the center of the antenna and bending it; and (c) Rotating and bending a rotary base fixed with screws.

However, with the conventional method, each time you enter a place with a low ceiling, you have to put your hand out the window or get out of the car and put the antenna down or stand it up. It was annoying. In particular, if it was installed on the roof side of the passenger seat or on the rear bumper, the user was forced to get out of the vehicle.

Furthermore, it is difficult and extremely dangerous to stop the vehicle and take measures after discovering that the antenna is at a height that makes contact with an obstacle.

The present invention was devised in view of these drawbacks, and the antenna is remotely controlled by a switch mechanism that is linked to an operating switch installed near the driver's seat and a sector gear that rotates the antenna. This allows the antenna to be set at a safe angle or at a desired angle to prevent the antenna from flopping.

The gist of the present invention is that the tilting range of an antenna that is linked to a sector gear driven by a motor disposed at an appropriate position such as on the roof side or rear bumper of an automobile via an appropriate deceleration means can be changed from an upright position to a down position. A switch mechanism is provided in conjunction with the sector gear to detect the tilted state, and the rotation of the motor is controlled by the switch mechanism and the operating switch provided on the driver's seat.
A tilting device for a vehicle antenna, characterized in that it is configured to stop the antenna and raise or lower the antenna, and the switching mechanism is a spiral shape that is interlocked with a sector gear to rotate the motor. Alternatively, the detected voltage difference between a potentiometer interlocked with the sector gear and a potentiometer provided at the driver's seat is used to rotate or stop the motor via a control amplifier.

Hereinafter, the present invention will be explained in detail based on one embodiment.

Figures 1 to 6 show the antenna of the present invention in two positions: standing up or lying down.
This shows a point-stop type embodiment.

A cam 5b1 and a binion 5α are rotatably mounted in the housing 11 and rotated together with a worm wheel 5 that meshes with a worm 4 that is rotatably mounted on the rotating shaft of the motor 3. cam 5
For example, as shown in FIG. 4, b is formed in an eccentric shape, and a microswitch 2 is brought into contact with a claw-shaped portion on the side circumference thereof to form a switch mechanism.

This switch mechanism focuses on the fact that the on/off operation of the microswitch 2 produces a hysteresis characteristic as shown in FIG. 3 due to the characteristics of a spring (not shown) built into the microswitch 2. The position of the microswitch 2 is determined so that it comes into contact with the range from the X point to the Y point (between the switch stroke R2 and R1) where the hysteresis characteristic of 5b occurs.

A fan-shaped sector gear 6 that meshes with the pinion gear 5α is rotatably attached to the output shaft 7 and rotatably attached to the housing 11, and rotates approximately 90 degrees. Further, the output shaft 7 has an antenna base 8 fixed thereon with an antenna 9 attached thereto, as shown in FIGS. 5 and 6, on the outside of the housing 11.

FIG. 2 shows an example of the circuit of the present invention.
From the power supply, connect the two terminals of operation switch 1 (up terminal 12 and do
wn terminal 13) and micro switch 2 terminal (No.
The terminal 14 and the NC terminal 15) are connected in parallel, and the motor 3 is connected between the common terminals 1 and 17 of the operation switch 1 and the microswitch 2.

Further, in the above embodiment, the cam 5b is used as the switch mechanism.
The microswitch 2 is used, but an example using two potentiometers instead is shown in the OFF diagram, Fig. 8,
This will be explained with reference to FIG.

A potentiometer 20 that interlocks with the output shaft 7 to which the sector gear 6 is attached is provided, and an operating potentiometer 21 provided at the driver's seat.
, 21C) respectively, and the operating point terminal 20b of the potentiometer 20 and the operating potentiometer 2
The motor is rotated in the direction in which the potential difference with the set point terminal 21b of 1 becomes O through the amplifier 22.

Figure 9 is an example of a circuit diagram of the other embodiment described above. In the figure,
10 is a coupler and lead wire attached to the housing.

In the present invention, the mechanism for raising or lowering the antenna is not particularly limited, and two microswitches may be used.

In addition, in the case of using the cam 5b and the microswitch 2 as in the above embodiment, the shape of the cam is not limited as long as the operation is based on the hysteresis characteristic shown in Fig. It is desirable that the intermediate shape from the point X to the operating point Y in the upright state is eccentric in a shell shape so that the stroke of the microswitch 20 moves linearly.

Furthermore, the rotation angle θp of the cam 5b is from point X to point Y, but the antenna is moved from the lying state (FIG. 1 (a) state) to the upright state so that the angle θS≦90° (see FIG. 6). For example, the gear ratios of the pinion 5α and the sector gear 6 are determined so that 4θs>. At this time, it is natural to set the cam 5b so that it does not rotate 360 degrees.

When antenna 9 is currently in the prone state, operation switch 1 on the driver's seat
When both terminals are connected, 10 power supply to operation switch 1 u
p terminal 12 ~ common terminal 16 ~ motor 3 ~ common terminal 1.7
-Micro switch 2ONC terminal 15--A motor normal rotation drive circuit called power supply is configured, and the motor 3 rotates in the normal direction. The power of the motor 3 is transmitted through the worm 4 and the worm wheel 5 to rotate the pinion 5α and the cam 5b in the counterclockwise direction. The pinion 5α acts via the sector gear 6 to rotate the output shaft 7 in a clockwise direction and to erect the antenna base 8 and antenna 9 attached to the output shaft 7.

On the other hand, the cam 5b is eccentric, and the amount of movement of the cam 5b on the worm wheel 5 is from point X to point Y in FIG. As the motor 3 rotates forward, the worm wheel 5 rotates, and the contact position of the microswitch 2 moves from point X to point Y (between α and β in Figure 3), and when it reaches point Y. Micro switch 2 connects NC terminal 15 to NC terminal 1
4 (between β and 1 in FIG. 3).

Therefore, the motor normal rotation drive circuit is cut off, the electric brake is applied, the motor 3 is stopped, and the antenna is held in an upright state.

Next, when laying down the antenna, press operation switch 1 down.
When switched to terminal 13, - power supply - operation switch 1 - Od
A motor reversal drive circuit consisting of ovtrn terminal 13 - common terminal 16 - motor 3 - common terminal 17 - microswitch 2ON No terminal - 10 power supplies is constructed, and the motor 3 is rotated in reverse.

This power acts in the opposite direction to the above-mentioned standing up motion, and rotates the pinion 5α and cam 5b clockwise through the worm 4 and worm wheel 5, and the pinion 5a rotates the output shaft 7 counterclockwise through the sector gear 6. By rotating it, the antenna base 8 and antenna 9 attached to the output shaft 7 act to lie down.

On the other hand, the microswitch 2 in contact with the cam 5b begins to rotate from the fiY point due to the hysteresis characteristics as shown in FIG. (Figure 3, between r and δ and α). Therefore, the reverse rotation circuit of the motor is cut off, the motor is stopped, and the tilting movement of the antenna is stopped.

Next, in the second embodiment, the set point terminal 21b of the operating potentiometer 21 on the driver's seat side is set to an arbitrary position. At this time, the amplifier n detects the voltage VI of the terminal 21α and the set point terminal 21b, the voltage between the terminal α of the potentiometer 20 and the operating point terminal 20b, and the voltages ■1, ■
Electricity is supplied to the motor 3 so as to rotate the potentiometer 20 in a direction in which the difference between the voltages of , , and . When the voltages V, , V, become the same, the output from the amplifier 22 stops, the motor 3 stops, and the rising or falling movement of the antenna 9 stops.

FIG. 9 shows an example of the connection with the control amplifier 22.

This figure shows input and output Mari.

Here, Fin 1Rin is obtained from the set point voltage v1 and operating point voltage V of the potentiometer 20 and the operating potentiometer 21, and based on this, the output voltages Vout 1 and Vout 2 as described above are obtained, and the motor 3 is Perform forward/reverse rotation and stop. Note that when both Voutl and Vout2 become L, the brake is applied and the remoter 3 is stopped.

The present invention is constructed and operates as described above, and is designed to prevent the driver from going out of his way to open the car window and knock down the antenna when the vehicle passes through a building with a low ceiling height (such as a parking lot or railway guard). The antenna can be tilted without having to fall or remove the vehicle after getting out of the vehicle, which eliminates the annoyance of the driver and completely eliminates the dangers associated with stopping or getting out of the vehicle. I can do it.

In addition, in the embodiment using one microswitch, the structure is simple and can be operated with one switch, so it can be manufactured at low cost, and in the second embodiment, the tilting of the antenna This has excellent effects such as being able to set the angle appropriately.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention. Fig. 1 is an explanatory diagram of the main part structure of the invention, Fig. 2 is a circuit diagram showing an example of the electric circuit of the invention, and Fig. 3 is a hysteresis characteristic of a microswitch. 4 is a front view of the cam used in the present invention, FIG.
The figure is a circuit diagram similar to the above, and FIG. 9 is an electrical connection diagram. 1 is an operation switch, 2 is a micro switch, 3 is a motor, 4 is a worm, 5 is a worm wheel, 5α is a pinion, 5b is a cam, 6 is a sector gear, 7 is an output shaft, 8 is an antenna base, 9 is an antenna, 10 is a lead wire and a coupler, 11 is a housing, 12 is an up terminal, 13 is a down terminal,
14 is an NC terminal, 15 is an NC terminal, 16.17 is a common terminal, and 14 is a potentiometer, 20cL120C121e
L121C is a terminal, 20b is an operating point terminal, 21 is an operating potentiometer, 21b is a set point terminal, and n is a control amplifier. Patent applicant Asmo Co., Ltd. O! 5ti#

Claims (3)

[Claims] (1) A switch is set so that the tilting range of the antenna, which is linked to a sector gear driven by a motor disposed at an appropriate location such as on the roof side or rear bumper of an automobile, via an appropriate deceleration means, is operated from an upright state to a prone state. A mechanism is provided to interlock with the sector gear, and the switch mechanism is connected to an operating switch provided on the driver's seat so that the motor can be rotated or stopped and the antenna can be raised or lowered. Tilt device for vehicle antenna. (2) The tilting device for a vehicle antenna according to claim 1, wherein switching is performed by a spiral cam interlocking with a sector gear as a switching mechanism to rotate or stop the motor. (3) As a switching mechanism, a potentiometer interlocked with a sector gear is provided in the driver's seat, and the detected voltage difference of an operating potentiometer is used to rotate or stop the motor via a control amplifier. Tilt device for vehicle antenna.