JPS6316293B2 - - Google Patents

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to the control of various electrical equipment systems on a vehicle, and in particular, the present invention relates to the control of various electrical equipment systems on a vehicle, and in particular, the present invention relates to the control of various electrical equipment systems on a vehicle. This invention relates to a switch operation panel on the steering wheel for giving instructions.

(Prior Art) Vehicles are equipped with various electrical/electronic devices.
For example, devices related to vehicle running control such as constant speed traveling devices, automatic transmissions, vehicle height control devices, seat posture control devices, steering wheel posture control devices, mirror posture control devices, window opening/closing devices, door lock control devices, etc. They are equipped with things related to the driver's driving comfort and entertainment, such as air conditioners, air cleaners, radios, audio equipment, etc.

It is preferable that the operation key switch for instructing to start/stop or change the operating state be located as close to the driver's seat as possible, and if possible, it is preferably located on the operation panel above the steering wheel.

However, conventionally, the operation keys arranged on the operation panel on the steering wheel are fixed to those for controlling a very limited number of devices.

From the standpoint of vehicle production and user demand, it is not necessarily necessary to equip all of the above-mentioned devices to a vehicle, and it is preferable that they can be selectively equipped in various varieties. Conventionally, one or more devices and a control panel, which is the operating end of the device, are assembled, and when the devices are installed, the control panel is mounted on the steering wheel, and the control panel is connected to the device. Perform the wiring. Therefore, the operation panel and wiring are also individual depending on the on-board equipment.

(Problem to be Solved by the Invention) Therefore, as the number of types of equipment to be installed increases and the range of equipment selection by users becomes wider, the combination of equipment, operation panels, and electrical wiring that connects them, that is, The number of types of equipment control systems will increase. Along with this, the production cost, assembly (system assembly and installation) cost, and management (stock) cost of each on-board equipment control system increases, and the reliability of assembly decreases. This is because as the number of types increases, high-mix low-volume production becomes necessary.

In order to improve this, all vehicles of a certain model are equipped with a general-purpose controller that can control all of the equipment that can be equipped and whose operation end is determined by the operation panel on the steering wheel, or Equipped with a host controller that gives commands to each of the controllers of each device,
In addition, a signal line is provided between the steering operation panel and the general-purpose controller or host controller as common equipment that can be applied to all of the above-mentioned equippable devices, and as individual equipment,
It is preferable to mount desired equipment on each vehicle and connect it to a general-purpose controller or host controller. That is, it is preferable to standardize the general-purpose controller or host controller so that it can be applied to all of the mountable devices, and also to standardize the communication line and provide common equipment.

In this case, if key switches are provided on the operation panel in association with all the devices that are planned to be selectively installed, in vehicles that are not equipped with all the devices, there will be many useless key switches on the steering wheel operation panel. Problems arise in that the operation panel is inconvenient to use, and that the operation panel on the steering wheel is complicated and expensive.

On the other hand, when each vehicle is equipped with an operation panel that corresponds to the equipment installed on it, the number of types of operation panels that vehicle manufacturers must prepare increases.
Preparing various complete operation panels is
This results in the consumption of many parts (operation panel components) whose use is uncertain. Additionally, there is a need for a mechanical coupling mechanism around the steering shaft to easily and robustly mount the operation panel on the steering shaft with high reliability.

The present invention makes the steering operation panel in the standardized on-vehicle equipment control system as described above as simple as possible, compatible with the equipment selectively mounted on the vehicle, and The purpose of this invention is to reduce as much as possible the number of operation panel elements that are selectively mounted on a vehicle in accordance with the equipment to be mounted, and to simplify the work for this mounting as much as possible.

[Structure of the invention]

(Means for Solving the Problems) The steering wheel switch operation panel of the present invention that achieves the above object includes one or more key switches,
and a switch circuit board comprising indicator means for expressing a use instruction code indicating the use of these key switches; means for detecting the indicator means; and a use instruction code corresponding to the indicator detected by the detecting means and the key switch. a switch operation reading circuit board positioned inside the steering wheel, equipped with transmitting means for transmitting key switch operation information determined by a key switch code corresponding to a selective operation of the key switch to an on-vehicle equipment control device;
and a connector for connecting the switch circuit board to the switch operation reading circuit board.

(Function) According to this, when the key switch is operated,
A key switch code indicating the operated key switch and key switch operation information corresponding to a usage instruction code are transmitted from the operation panel to an on-vehicle equipment control device, such as the aforementioned general-purpose controller or host controller. The onboard equipment control device can identify the target equipment and control details from this information.

Therefore, although it is unclear whether or not it will actually be installed in a vehicle, the present invention is equipped with key switches corresponding to each of the devices that can be installed and whose operating end is installed on the operation panel on the steering wheel, and an index means representing the device. A switch circuit board, or when the devices are grouped into predetermined categories, a switch circuit board equipped with a key switch corresponding to each group of devices and an index means representing the group is prepared, and each vehicle is equipped with common equipment. As such, the above-mentioned switch operation reading circuit board is fixedly mounted on the inside of the steering wheel, and an on-vehicle equipment control device that targets all of the above-mentioned equipment is installed, and once the equipment to be installed in each vehicle is determined, Install it and connect it to the on-board equipment control device, select the switch circuit board assigned to the on-board equipment, incorporate it into the operation panel on the steering wheel, and read the switch operation that is a common equipment through the connector. Just connect it to the circuit board. The degree of freedom in selecting on-board equipment is increased, and the work of equipping the vehicle with the selected equipment becomes extremely easy.

As described above, the operation panel of the present invention contributes to an improvement in the degree of freedom in selecting on-vehicle equipment and ease of selective installation, and is also simple in that it is equipped with key switches that are meaningful for operating the equipment actually mounted on the vehicle. Since the element selected in accordance with the installation of the equipment is only the switch circuit board rather than the entire operation panel, the consumption of parts whose use is uncertain is reduced. In addition, the element selected in response to equipment installation is only the switch circuit board rather than the entire operation panel, and this is connected to the switch operation reading circuit board via a connector when equipment is installed. Mechanical mounting and electrical connection of only the board is extremely easy.

Other objects and features of the present invention will become apparent from the following description of embodiments with reference to the drawings.

(Embodiment) FIG. 1 shows a coupling relationship between a steering wheel operation board and an on-vehicle control device in an embodiment of the present invention. In this example, the steering wheel operation board includes a constant voltage power supply 70 and a microcomputer unit 8 which is a transmission control device.
0, key switch 90, FSK modulation circuit 100,
It is equipped with an FSK demodulation circuit 110 and a high frequency cutoff coil HCL1. The fixed control unit on the on-board battery side includes a constant voltage power supply device 120, a microcomputer unit 130 which is a reception control device, an FSK modulation circuit 150, and an FSK demodulation circuit 1.
60 and a high frequency cutoff coil HCL2, the microcomputer unit 130
Various devices 140 are connected to.

A constant voltage power supply device 120 is directly connected to the battery power line on the vehicle, and a coil
A fixed side slip ring 45 is connected via HCL2, and the output end of the FSK modulation circuit 150 and the input end of the FSK demodulation circuit 160 are connected to the slip ring 45. A brush 48a is in contact with the slip ring 45, and another brush 48b connected to this brush 48a is in contact with the operation board side fixed slip ring 46. As will be described later, the slip rings 45 and 46 are stationary, and the brushes 48a and 48b rotate as the wheels rotate. The output terminal of the FSK modulation circuit 100 and the input terminal of the FSK demodulation circuit 110 are connected to the brush 46, and one end of the coil HCL1 is further connected to the brush 46. coil
The other end of HCL1 is connected to constant voltage power supply 70. SPL is the operation board side power line, VPL
is the fixed control unit side power supply line, and these are the slip rings 45, 46 and the brushes 48a,
They are connected to each other via 48b,
It serves as a transmission and reception line for FSK modulated waves.

FIG. 2a shows an external perspective view of the steering wheel, and FIG. 2b shows a front view. In FIGS. 2a and 2b, 30 is a steering wheel (handle), and an operation panel 31 of the attitude control device is installed in the center of the steering wheel. Three switches 32a, 32a, and 34a arranged on the right side of the steering wheel 30 are for tilt angle control, 32a is an up switch that corrects the vertical angle upward, 33a is a down switch that corrects downward, and 34a is an up switch that corrects the vertical angle upward. is an away switch that specifies the upper and lower corners as the upper limit retracted (tilt away) position and returns from the upper limit retracted position to the original operating position.

Three switches 32b, 32b and 34b located on the left side of the steering wheel 30
is for wheel height control, 32b is an up switch for instructing the upward drive of the wheel;
3b is a down switch 34 that instructs downward drive;
Reference numeral b designates an away switch that instructs to drive the wheel to the upper limit retracted position, and also instructs to drive the wheel to the operating position when the wheel is at the upper limit retracted position.

FIG. 2c shows a state in which the switch circuit board and the cover thereon have been removed from the operation panel 31.
Place the back side of the removed switch circuit board 91a on the second
d shows the surface of the switch reading circuit board 80a, and FIG. 2e shows the surface of the switch reading circuit board 80a. On the back side of the switch circuit board 91a, there are a connector 95 and conductive thin plates 94b and 94d indicating that the board 91a is used for radio control, constant speed control device control, air conditioner control, and horn energization control. It is pasted. On the surface of the switch reading circuit board 80a, there are a connector 96 that connects with the connector 95, conductor pins (conductor detection ends) 97a to 97d for reading the conductor thin plate, an elastic conductor 98 for common connection, and a guide 99. It is installed. The conductor pins 97a to 97d are inserted into mutually insulated elastic conductors. A switch circuit board 91 is attached to the switch reading circuit board 80a.
Figure 2f shows the state in which a is fixed. 91b is a cover of the switch circuit board 91a.

FIG. 2g is a side view of the operating section 35 of the steering mechanism. This operation section 35 is roughly divided into a steering wheel 30, an operation panel 31, a steering telescope mechanism 36, and a tilt mechanism 3.
Consists of 7. FIG. 2h is a sectional view showing a support structure for the steering wheel 30 and the operation panel 31. The support 38 and gear 39 are fixed to the body of the vehicle, and the steering main shaft 40 is rotatably supported by the support 38. Support 41 is steering wheel 3
0 and the steering main shaft 40, and rotatably supports gears 39, 42 and a connecting member 43. The connecting member 43 has gears 43a and 43b having the same number of teeth, which mesh with the gears 39 and 42, respectively, at both ends thereof.
A printed circuit board 44 including an attitude control circuit and an operation panel 31 are fixed to a gear 42 . 45 and 46 are the support 38 and the operation panel 3, respectively.
1, and a brush 48 is pressed against both by compression coil springs 47a and 47b, so that the two are electrically connected. Note that the gears 39 and 42 have the same number of teeth.

The purpose of this structure is to prevent the operation panel 31 from rotating as the steering wheel 30 rotates. In this embodiment, when the steering wheel 30 is rotated, the support 41 and the steering wheel are rotated. main shaft 40
The gears 43a, 43b and 39, 42 have the same number of teeth, so the support 4 generated by the circular movement of the connecting member 43 due to the rotation of the support 41
The relative movement amount (angle) between 1 and the gear 39 and the relative movement amount between the support 41 and the gear 42 are equal,
The gear 42 does not rotate relative to the gear 39, and as a result, even if the steering wheel 30 rotates, the operation panel 31 does not rotate. Power is supplied to the printed circuit board via the slip rings 45, 46 and the brush 48. It is done.

Figure 2i shows the steering telescope mechanism 36.
An enlarged cross-sectional view of the drive section of FIG. 2j is the i-
It is an i-line sectional view. The steering telescope mechanism 36 moves the steering wheel 30 forward and backward relative to the driver, and in this embodiment is driven by a motor M7. The main shaft 40 and the shaft 40a are fitted together so that they do not slip in the direction of rotation and are slidable in the direction of arrow A. The guide member 50 on the fixed side is provided with a drive section including a motor M7, which drives a threaded rod 52 fixed to the bracket 51 on the movable side. The shaft 53 of the motor M7 is connected to a worm shaft 54, and a worm gear 54a formed on the worm shaft 54 meshes with a screw formed on the outer periphery of a nut 55. The nut 55 is screwed into the threaded rod 52 so that its position is fixed and can rotate freely, so when the motor M7 rotates, the worm gear 5
4a rotates and rotates the nut 55 to tighten the threaded rod 52.
move forward (or backward) in the direction of arrow A. As a result, the movable side such as the steering wheel 30 is guided by the guide member 50 and moves back and forth in the axial direction of the main shaft 40, that is, in the direction of arrow A. This moves the steering wheel 30 up and down. The shaft 40b is fixed in position, and the shaft 40a is connected to the shaft 40b by a universal joint 56, so that the vertical angle can be changed in the direction of arrow B. 57 is connected at one end to a position shifted downward from the position of the universal joint 56, which is the fulcrum for changing the vertical angle, and the other end is connected to the nut 58 on the drive side.
It is an arm connected to. Nut 58 is motor M
It is threadedly engaged with a threaded rod 59 which is rotationally driven by 6. Therefore, when the motor M6 rotates, the threaded rod 5
9 rotates, but the nut 58 does not rotate, so that the nut 58 moves in the axial direction (in the direction of arrow A) to drive the arm 57, and the movable side rotates around the universal joint 56. Furthermore, 60
Reference numerals a and 60b are limit switches for detecting the upper limit position of the movable side.

FIG. 3a shows the structure of the electric circuit assembled on the switch operation reading circuit board 80a mounted on the operation panel 31 and the switch circuit board 91a. In this case, the key switch 90 shown in FIG. 1 has a key input section 91, which is a combination of a momentary key switch and a key encoder, which is closed only while the key is pressed in FIG. It is comprised of operation switch input sections 92 and 93, each consisting of an operation switch that opens when pressed and a flip-flop for latching the state. Only this key input section 91 is held on the board 91a, and the others are incorporated in the board 80a. The FSK modulation circuit 100 includes a pulse oscillator 101, an FSK modulator 102, an output cutoff gate 103, and a transmission driver 104. It is composed of a container 113. The microcomputer unit 80 includes a 1-chip microcomputer CPU,
Address latch ADL and semiconductor read only
Consists of ROM, input/output port I/O, reset switch, and clock pulse oscillator.
The ROM stores key input reading program data and transmission control program data for creating and transmitting a transmission code in response to changes in key status.

Figure 3b shows the construction of the fixed control unit.
This fixed control unit is also similar to the operating board.
FSK modulation circuit 150 (pulse oscillator 151,
FSK modulator 152, output gate 153 and transmission driver 154) and FSK demodulation circuit (amplification/waveform shaping circuit 161, noise cutoff circuit 162)
and an FSK demodulator 163). In this embodiment, a constant speed control device, an air conditioner, and a radio are connected to the microcomputer unit 130 in a relay control mode. In addition to the FSK transmission/reception control program data, the ROM of the unit 130 contains the data for decoding the received code and transmitting the relay L.
Control program data for controlling the energization of L1 to L6 is stored.

FSK modulation circuits 100, 150 and FSK demodulation circuits 110, 1 shown in FIGS. 3a and 3b.
60 input/output signals are shown in FIG. The operations of the FSK modulation circuit 100 (500 operates in the same manner) and the FSK demodulation circuit 110 (160 operates in the same manner) will be described with reference to FIG. First, when the output port P24 of the one-chip microcomputer CPU becomes a high level H, the pulse oscillator 101 is activated and generates a constant frequency pulse B. In this state, output P2
5 is at a high level H, the output C of the modulator 102
becomes a pulse synchronized with pulse B, and the output P25
When is at a low level L, the output C becomes a 1/2 frequency divided pulse of the pulse B. Therefore, while P25 is at H level, output C becomes pulse B, and while P25 is at L level, it becomes a 1/2 frequency divided pulse of pulse B. This output C is amplified by the driver 104 and sent to the power supply line SPL. Since a coupling capacitor is inserted between the transmission driver 104 and the power supply line SPL, a bipolar pulse D appears on SPL. When a hyperbolic pulse D appears on the power supply line SPL, it is amplified by the amplification/waveform shaping circuit 111 via a coupling capacitor, and is converted into a positive pulse E.
is applied to the noise cutoff circuit 112,
Then, it is further shaped into a predetermined width to widen the high level H width (F), integrated in the demodulation circuit 113 and converted to analog (H), and further binarized to produce a binary signal of high level H or low level L. I and is applied to the input terminal _T0 . Unit 80 microcomputer
When the transmission bit is H, the CPU sets the output port P25 to H for a time T and to L for the next T, allocating this one period 2T to 1 bit, and when the transmission bit is L, the output port P25 is set to a time 1. H during /2T,
During the next 1/2T, this period T is set to L and this one period T is assigned to 1 bit, and when receiving, the input terminal _T0 becomes T
If it is H for a period of 1/2T, it is read that 1 bit H has arrived, and it is read that 1 bit L that is H for 1/2T has arrived. The same applies to the processing and decoding of transmitting and receiving signals by the microcomputer CPU of unit 130.

In this embodiment, the frame structure of the transmitted signal is
As shown in figure a, a 10-bit H mark code indicates the beginning of the frame, a 1-bit L indicates the data start, 16-bit data, and an 8-bit CRC.
It is a time-series serial array of check bits, and 16
The starting 4 bits of the bit data are the conductive thin plate 94.
94d, and the rest are radio control data, horn control data, constant speed driving control, and air conditioner control data (key switch status notification bits) as shown in FIG. 4b.

FIG. 6a shows the transmission/reception control flow of the microcomputer unit 80 (FIG. 3a) of the operation board 31. Transmission and reception control of the unit 80 will be explained with reference to this. When the CPU of unit 80 is powered on, it initializes the input read register and input/output ports, and inputs the input port P14.
～Read the code of the board 91a from P17, and set the I/O
input ports and its own input ports P13 to P
10, and if there is a change in status indicating that the key is closed or the switch is closed, the input ports P14 to P10 are monitored.
17 and I/O input port and input port P
The bits 13 to P10 are set in the input reading register, the contents thereof are converted to transmission data (data A plus data B), and CRC check bits BCC of the transmission data are created. Then, a predetermined value is set in the transmission/reception error check counter (program counter), H is set in the output port P24, and output is sent to the output port P25 according to the mark code, start bit, data, and BCC bits.
A pulse of 2T period (when bit = H) or T period (when bit = L) is output with one period assigned to one bit. This allows the power line SPL
A bipolar pulse D corresponding to the serial bit arrangement of the transmission frame (FIG. 4a) arrives at the FSK demodulation circuit 160 of the fixed control unit through the slip ring 46, the brushes 48b and 48a, the slip ring 45, and the power supply line VPL. , which is demodulated and a pulse similar to the pulse sent to the output port P25 of the CPU of the operation board (Fig. 3a) is
It is applied to the input port T ₀ of the fixed control unit CPU (FIG. 3b).

When the CPU of the operation board (FIG. 3a) finishes transmitting one frame (FIG. 4a), it turns on a timer (program timer) and outputs a 1/2T cycle pulse indicating L to the output port P25. When the time is over, both output ports P24 and P25 are set to L, the timer is turned on, and the timer waits for the _T0 terminal to become H. before this timer times out
When the _T0 terminal becomes H, count the H time and
Determine whether it is a bit or an L bit, store it in the reception register, increment the bit number count register by 1, repeat this every time _T0 changes from L to H, and when the count register reaches 19, the reception Check the contents (ACK) of the 12th to 19th bits of the register and see that they are all L (reception complete).
Then, P24 is set to H again, and P25 is filled with mark (10 bits), start 1 bit, and continuous H.
Outputs a pulse corresponding to the 8-bit ACK frame, then sets P25 to L for a predetermined period of time, and then outputs P24.
Let be L. After that, monitor the input terminal T ₀ for a predetermined time,
If it becomes H during that time, write the data to the reception register in the same manner as described above, decrement the limit counter by 1, read the data, and send an 8-bit L ACK (ACK is the reply code, consisting of 8 bits). If all bits L = 0 indicate completion of reception, and all bits H = 1 indicate completion of transmission), it is considered that reception is complete. Reception completed (ACK = L x 8 bits)
If the input terminal _T0 does not become H for a predetermined period of time after receiving , the CPU of the operation board (FIG. 3a) returns to reading key inputs. Data frame (Figure 4a) Reception completed within specified time after transmission (ACK = L x 8 bits)
If no data frame is sent, the limit counter is decremented by 1 and the data frame is sent again. When the limit counter reaches zero, it is considered an abnormality and the warning light on the operation board is set to turn on.
Return to key input reading. ACK indicating completion of reception (=L
×8 bits) After receiving the frame, input terminal T ₀
When becomes H, data is read, the limit counter is decremented by 1, and the data becomes ACK=L.
If it is ×8 bits, the transmission is completed again ACK = H × 8
The bit is sent out, and if ACK is not equal to L x 8 bits, the limit counter is further decremented by 1. If the limit counter reaches zero after receiving the reception end ACK0, set the alarm display and return to key input reading.

In key input reading, the status signal of the input port is read at predetermined time intervals and compared with the memory bit of the input register, and if any input is different from the memory bit of the input register, it is assumed that a key or switch input has been made. The input status signal is written to the input register to perform the above-mentioned transmission and reception.

FIG. 6b shows the reception/transmission control flow of the microcomputer CPU (FIG. 3b) of the fixed control unit. This is similar to the reception/transmission control flow of the operation board CPU (Figure 3a), but the received data (4th
A CRC check bit is generated from the data bits in Figure a) and compared with the received BCC to check for transmission/reception errors.If the data frame is received without errors, the data part of the data frame (Figure 4A) is set to 8 bits L (ACK0). The difference is that the received data is converted into a device control code and sent out, and the received data is converted into a device control code and set to the output port to the device 140.

In addition, other display means, notification means, small equipment, etc. are connected to the microcomputer unit 80 of the operation board 31, and the unit 1 is connected as necessary.
A key switch is connected to unit 30, and both microprocessor CPUs of units 80 and 130 are
By storing a program that can execute both the control flows of FIGS. 6a and 6b, bidirectional remote instructions and control are possible.

〔Effect of the invention〕

As described above, the operation panel of the present invention contributes to an improvement in the degree of freedom in selecting vehicle-mounted equipment and ease of selective installation, and also provides a simple operation panel equipped with key switches that are meaningful for operating the equipment actually mounted on the vehicle. Since the element selected in response to the installation of the equipment is only the switch circuit board rather than the entire operation panel, the consumption of parts whose use is uncertain is reduced. In addition, the element selected in response to equipment installation is only the switch circuit board rather than the entire operation panel, and this is connected to the switch operation reading circuit board via a connector when equipment is installed. Mechanical mounting and electrical connection of only the board is extremely easy.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an outline of the configuration of an operation panel according to an embodiment of the present invention, and a connection relationship between the operation panel and an on-vehicle equipment control device located at a position other than the steering wheel. FIG. 2a is a perspective view showing the appearance of the operation panel, and FIG. 2b is a plan view showing the top surface. Fig. 2c is a perspective view of the operation panel with its cover and switch circuit board removed, Fig. 2d is a plan view showing the lower surface of the switch circuit board, and Fig. 2e is a view of the switch operation reading circuit board of the operation panel. FIG. 2F is a plan view showing the top surface, and a side view showing the coupling relationship between the switch circuit board and the switch operation reading circuit board in the operation panel. FIG. 2g is a side view showing a mechanism that supports the steering wheel 30 shown in FIGS. 2a to 2c, and FIG. 2h is a longitudinal sectional view showing a mechanism that supports the operation panel at the center of the steering wheel 30.
Fig. 2i is an enlarged cross-sectional view of the wheel vertical drive mechanism 36 shown in Fig. 2g, and Fig. 2j is an enlarged cross-sectional view of the wheel vertical drive mechanism 36 shown in Fig. 2i.
-i line sectional view. FIG. 3a is a block diagram showing electrical elements installed on the operation panel, and FIG. 3b is a block diagram showing an on-vehicle equipment control device and on-board equipment located away from the steering wheel. FIG. 4a is a plan view showing the configuration of a transmission signal frame communicated between the operation panel and the on-board equipment control device, and FIG. 4b is a
A plan view showing the structure of "data" in a transmission frame, FIG. 5, is shown in FIGS. 3a and 3b.
This is a dime chart showing input and output signals of the FSK modulation circuit and FSK demodulation circuit. Figure 6a is 3a
FIG. 6b is a flowchart showing the transmission/reception control operation of the microcomputer unit 80 shown in FIG. 3b.
30 is a flowchart showing the transmission/reception control operation of No. 30. 30: Steering wheel, 31: Operation panel (operation panel), 32: Up switch, 3
3: Down switch, 34: Away switch,
35: Steering mechanism operation unit, 36: Steering telescope mechanism, 37: Tilt mechanism, 3
8, 41: Support, 39, 42: Gear, 40:
Steering main shaft, 43: connection member,
44: Printed circuit board, 45, 46: Slip spring, 47a, 47b: Compression coil spring,
48: Brush, 50: Guide member, 51: Bracket, 52: Threaded rod, 53: Motor shaft, 54: Worm shaft, 55, 58: Nut, 56: Universal joint, 57: Arm, 60: Limit switch, 80: Microcomputer unit (transmission means), 80a switch operation reading circuit board (switch operation reading circuit board), 90: key switch (key switch), 91: key input section, 91
a: Switch circuit board (switch circuit board), 9
1b: Cover, 92: Operation switch input section, 94
b, 94d: conductor thin plate (indicator means, conductor),
95, 96: Connector (connector), 97a-9
7d: conductor pin (means for detecting index means, contactor), 98: elastic conductor, 99: guide, 13
0: Microcomputer unit (onboard equipment control device).

Claims (1)

[Scope of Claims] 1. A switch circuit board comprising one or more key switches and indicator means representing a use instruction code indicating the use of these key switches; means for detecting the indicator means; and means for detecting the indicator means. a transmission means for transmitting key switch operation information determined by an application instruction code corresponding to the index detected by the key switch and a key switch code corresponding to the selective operation of the key switch to an on-vehicle equipment control device; A switch operation panel on a steering wheel, comprising: a switch operation reading circuit board positioned on one side; and a connector connecting the switch circuit board to the switch operation reading circuit board. 2. The steering-mounted switch operation panel according to claim 1, wherein a switch circuit board is arranged above the switch operation reading circuit board, and a connector is arranged between them. 3. The indicator means is a conductor bonded to the lower surface of the switch circuit board, and the means for detecting the indicator means is
The above-mentioned steering wheel switch operation panel according to claim 2, wherein the switch operation panel is a contact that is mounted on the upper surface of a switch operation reading circuit board and comes into contact with the conductor.