JP2004352145A - Information display device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To minimize effects to the receiving performance of a wire harness in a meter device for a vehicle integrated with a radio wave receiver. <P>SOLUTION: In the meter device provided with the radio wave receiver 12 together with a connector 72 for connecting between a meter circuit and the wire harness 71 on the rear face side of a meter housing 22 storing a meter circuit board wherein the meter circuit is formed, the connector 72 and the receiving port 722 for receiving the tip end part of the wire harness 71 are directed substantially in parallel with the rear face 22a of the meter housing 22 and in a direction not opposite to the radio wave receiver 12 to prevent the part 711 continuing from the connector 72 of the wire harness 71 from bending to the direction of the radio wave receiver 12. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an information display device for a vehicle in which a radio receiver such as a keyless entry receiver is integrally provided.
[0002]
[Prior art]
Today's automobiles are equipped with radio receivers in addition to car audio radios, and typical ones are used in keyless entry systems. The keyless entry system is a system for controlling opening and closing of a door of a vehicle, and includes a keyless entry receiver mounted on a vehicle side and a keyless entry transmitter built in a key or the like possessed by a driver. The keyless entry transmitter transmits a transmission signal that modulates the ID code and operation command code assigned to each transmitter by the driver's operation, and the keyless entry receiver demodulates it when it receives the transmission signal. To determine whether the ID code is from a transmitter paired with itself, and when affirmatively determined, outputs a control signal corresponding to the operation command code to the control ECU of each part of the vehicle to open and close the door and the engine. Perform starting, etc. As such a keyless entry system, a system using weak radio waves in the 300 MHz band is mainly used.
[0003]
Patent Literature 1 below discloses a vehicle in which a receiving circuit board on which a receiving circuit is formed is housed in a housing, and a radio wave receiver having an antenna protruding from the housing displays traveling information such as vehicle speed to a driver. A device added to a meter device which is an information display device for use has been proposed.
[0004]
Patent Document 2 below discloses a radio receiver in which a receiving circuit board of a radio wave receiver is built in a meter device. In this meter device, a board on which a control circuit for controlling the display content on the display unit to follow the actual running state of the vehicle is formed is stored in the meter housing, and the receiving circuit board of the radio wave receiver is laminated on the meter circuit board. To be installed.
[0005]
[Patent Document 1]
JP-A-9-207717 [Patent Document 2]
Japanese Patent Application Laid-Open No. Hei 8-27664
[Problems to be solved by the invention]
By the way, there are many types of information displayed on a vehicle information display device such as a meter device, and there are various types of display means. For this reason, a wire harness composed of various control and power supply lines is connected, and the connection is made via a connector provided on the rear side of the meter housing. The wire harness is provided with an extra portion for preventing the wire harness from being pulled when the travel information display device is removed from the instrument panel, and the wire harness is curved in an actual vehicle. The wire harness is made up of a thin soft wire to some extent, so there is no fixed form of the wire harness before assembly, and the way the wire harness bends in the actual vehicle depends on the differences in the physique and options of the assembly worker. The fact is that each is different. When a radio wave receiver is integrated with such an information display device for a vehicle, the radio wave receiver comes close to the wire harness, and depending on how the wire harness bends, the radio wave receiver is not sufficiently received by the influence of the wire harness. Performance may not be exhibited.
[0007]
The present invention has been made in view of the above circumstances, and has as its object to provide an information display device for a vehicle, which has a sufficient reception performance and is integrated with a radio wave receiver of a vehicle.
[0008]
[Means for Solving the Problems]
According to the first aspect of the present invention, a control circuit board having a display section for displaying information for an occupant on the front surface and having a control circuit for controlling display contents on the display section is provided in the housing. A vehicle information display device provided with a connector for connecting between the control circuit and the wire harness, and a radio receiver including a receiving circuit and an antenna, on the rear side of the housing, In a vehicle information display device provided with an extra length portion that prevents the wire harness from being pulled when the travel information display device is removed from the instrument panel,
The connector has a receiving port for receiving a distal end portion of the wire harness oriented substantially parallel to a rear surface of the housing and in a direction not facing the radio wave receiver.
[0009]
By making the receptacle of the connector that receives the distal end of the wire harness substantially parallel to the rear surface of the housing, the portion of the extra length of the wire harness that is continuous with the connector is substantially parallel to the rear surface of the housing. Even if the wire harness is bent at the time of assembling the information display device for a vehicle of the present invention, the direction of the receptacle of the connector on the information display device for the vehicle is set to the direction not facing the radio wave receiver. The part connected to is large and does not bend toward the radio receiver. Accordingly, it is possible to prevent the wire harness from being too close to the radio wave receiver, and it is possible to reduce the influence of the wire harness on reception performance such as an antenna gain provided in the radio wave receiver.
[0010]
According to a second aspect of the present invention, in the configuration of the first aspect, a fixing means for fixing the wire harness to the housing is provided on a rear surface of the housing.
[0011]
Since the wire harness is positioned at the fixing means position, it is possible to further suppress the portion of the extra length of the wire harness connected to the connector from bending toward the radio wave receiver.
[0012]
According to a third aspect of the present invention, in the configuration of the first aspect of the present invention, a fixing means for fixing the wire harness to the member is provided on a vehicle body-side member disposed near the rear surface of the housing.
[0013]
Since the wire harness is positioned at the fixing means position, it is possible to further suppress the portion of the extra length of the wire harness connected to the connector from bending toward the radio wave receiver.
[0014]
According to the fourth aspect of the present invention, a control circuit board having a display unit for displaying information for an occupant on the front surface and a control circuit for controlling display contents on the display unit is provided in the housing. On the back side of the control circuit board, together with a connector for connecting between the control circuit and the wire harness, a vehicle information display device provided with a radio receiver comprising a receiving circuit and an antenna, In a vehicle information display device, the wire harness is provided with a surplus portion that prevents the wire harness from being pulled when the traveling information display device is removed from the instrument panel.
The radio wave receiver is provided with a cover that covers at least the antenna.
[0015]
As a result, it is possible to secure a certain interval between the antenna and the wire harness, and it is possible to make the level of reception performance equal to or higher than a certain level. It is possible to reduce the influence of the wire harness on the reception performance such as the antenna gain provided in the radio wave receiver. Further, it is possible to prevent the antenna from being damaged by touching the wire harness or the like.
[0016]
According to the fifth aspect of the present invention, a control circuit board having a display section for displaying information for an occupant on the front surface and a control circuit for controlling display contents on the display section is provided in the housing. And a radio wave receiver including a receiving circuit and an antenna is provided on the back side of the control circuit board together with a connector for connecting the control circuit and the wire harness, and the connector is provided in a longitudinal direction of the control circuit board. An information display device for a vehicle that is biased to one side, wherein the wire harness has an extra length portion that prevents the wire harness from being pulled when the travel information display device is removed from an instrument panel. Vehicle information display device,
The radio wave receiver is disposed inside or outside the housing at a position corresponding to the other longitudinal direction of the control circuit board.
[0017]
A sufficient distance can be provided between the radio receiver and the connector, and the influence of the wire harness on the reception performance such as the antenna gain provided in the radio receiver can be reduced.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
(1st Embodiment)
FIGS. 1, 2 and 3 show a meter device to which the information display device for a vehicle according to the present invention is applied. The meter device is a receiver integrated type in which a keyless entry receiver 12 for a keyless entry system of a vehicle is integrated. The meter device 1 is fitted into a meter device opening of an instrument panel in a vehicle compartment. The main body 11 of the meter device 1 has a meter upper housing 21 and a meter lower housing 22 which are housings connected at two connecting portions 25, and the display unit 3 is provided on the meter upper housing 21 on the occupant side. A transparent clear housing 23 is arranged in front of the display unit 3 and covers the display unit 3 in front of the housing. The display unit 3 is provided with instruments and displays information such as traveling information of the vehicle to the occupant of the vehicle. Behind the display board 30 of the display unit 3 facing the occupant, a meter circuit board 4 as a control circuit board is provided.
[0019]
The display unit 3 displays a vehicle speed, an engine speed, and the like by rotating the indicator needle 31 attached to the shaft end of the step motor 43 penetrating the display plate 30 by driving the step motor 43. A trip meter 32 of a liquid crystal display type is arranged below the pointer 31. In addition, an indicator light such as an LED (not shown) indicating the wearing state of the seat belt and the like is provided.
[0020]
As the meter circuit board 4, a general one using various insulating materials such as a glass epoxy material is used. Various components 41, 42, 43 and the like are mounted on the plate surface of the meter circuit board 4, and a meter circuit 4a is formed as a control circuit for controlling the display contents on the display unit 3 to follow the actual running state of the vehicle. You.
[0021]
There is a CPU 41 as the parts 41 to 43 and the like. The CPU 41 receives running information such as vehicle speed, remaining fuel, engine speed, and oil temperature, and outputs a control signal to each step motor 43 and the like based on the input information. Further, in addition to the CPU 41 and the step motor 43, a communication IC 42 for communicating with an external control ECU and the like are mounted. Although not shown, a power supply regulator for supplying power to these components is mounted.
[0022]
The meter circuit board 4 also includes a board-side connector 45 that is a connector for connecting the meter device 1 to an external control system, a power supply system, and the like. Further, transmission and reception of signals to and from the keyless entry receiver 12 and a keyless entry receiver A relay section 44 for supplying power to the power supply 12 is provided.
[0023]
The keyless entry receiver 12 is mounted on the rear surface 22a of the meter lower housing 22 at a position where the relay section 44 protrudes from the meter lower housing 22, and the keyless entry receiver 12 is a radio wave from a keyless entry transmitter (not shown). Is to be received. The keyless entry receiver 12 and the keyless entry transmitter constitute a radio keyless entry system. As this radio wave, for example, a 300 MHz band radio wave is used.
[0024]
The keyless entry receiver 12 has an antenna 6 connected to a receiving circuit board 5, and various components 51 are mounted on the receiving circuit board 5 to form a receiving circuit 5a. When the keyless entry transmitter is operated by a driver's operation and there is a sense of radio waves from the keyless entry transmitter, the radio wave is demodulated and, based on the demodulated signal, the ID code is paired with the keyless entry transmitter. It is determined whether it is from the machine. If an affirmative determination is made, a control signal corresponding to the operation command code is output to the control ECU of each section of the vehicle via the relay section 44 and the board-side connector 45, which is a connector, to open and close the door, start the engine, and the like.
[0025]
The keyless entry receiver 12 is covered by the receiver housing 24 as a cover together with the antenna 6. The receiver housing 24 is fixed to the back surface 22a of the meter lower housing 22 by a fixing part (not shown).
[0026]
Next, a connection part between the control ECU of each part of the vehicle and the meter device 1 will be described. The board side connector 45 can be inserted from the outside of the meter lower housing 22 through the connector opening 201 of the meter lower housing 22. A plurality of male terminals 451 of the board-side connector 45 are arranged in the connector opening 201 in a row in the left-right direction (horizontal direction), and project perpendicularly to the back surface 22 a of the meter lower housing 22. The position of the board-side connector 45 is set on the left side of the keyless entry receiver 12 when the meter device 1 is viewed from the rear. The wire harness-side connector 72 having the female terminal 721 paired with the male terminal 451 is inserted into the board-side connector 45 to make the wire harness 71 conductive with a predetermined wiring pattern of the meter circuit 4a. The wire harness-side connector 72 has a structure that bends into an L-shape, and the direction of insertion between the connectors 45 and 72 and the direction of the receiving port 722 for receiving the distal end of the wire harness 71 are at right angles. It is parallel to the board surface of the circuit board. The receptacle 722 of the wire harness-side connector 72 faces downward, and is in a non-opposite direction with the board-side connector 45 and the keyless entry receiver 12 arranged in parallel in the left-right direction. Each line of the wire harness 71 is connected to the female terminal 722 in a one-to-one correspondence at the tip.
[0027]
The operation of the meter device 1 will be described. FIG. 8 shows the wire harness side connector X in which the direction of the receptacle is the same as the insertion direction of the connector, and the portion 711 of the wire harness 71 on the connector side is perpendicular to the back surface 22a of the meter lower housing. ing. This is for a conventional meter device. The entire length of the wire harness 71 is set so as to have an extra length so as not to be pulled when the meter device is removed from the instrument panel to the inside of the vehicle, and the wire harness 71 is curved in an actual vehicle. If the wire harness 71 swings around the connector receptacle, it may approach the keyless entry receiver 12 depending on the vehicle. This is for the following reason. That is, since the wire harness 71 is made of a thin soft wire to some extent, the wire harness 71 does not have a fixed shape before being assembled, but has a predetermined initial shape when wired, and this initial shape is attached to the instrument panel of the meter device. They vary due to differences in the physique of the workers performing the work, differences in options, and the like. Depending on this initial shape, when the wire harness 71 is connected to the meter device main body and the meter device is pushed into the opening of the instrument panel, the portion connected to the connector of the wire harness 71 receives the keyless entry. There is a risk of turning toward the machine 12.
[0028]
On the other hand, in the present meter device 1, the receiving port 722 of the wire harness-side connector 72 is substantially parallel to the meter lower housing back surface 22 a, so that the wire harness 71 of the extra length of the wire harness 71 The continuous portion 711 faces in a direction parallel to the meter housing back surface 22a. In the portion 711 connected to the wire harness-side connector 72, the direction of the receptacle 722 of the wire harness-side connector 72 is set to the non-opposite direction to the keyless entry receiver 12, so that the connector-side portion of the wire harness 71 is largely keyless. It does not turn to the entry receiver 12. Thereby, the influence of the wire harness 71 on the reception performance such as the antenna gain of the keyless entry receiver 12 can be reduced.
[0029]
Further, since the receiver housing 24 covers the keyless entry receiver 12 including the antenna 6, it is possible to prevent the antenna 6 from being damaged by touching the wire harness 71 or the like. Further, even when the wire harness 71 is assembled in contact with the receiver housing 24, a constant interval can be secured between the antenna 6 and the wire harness 71, and the level of the reception performance can be made equal to or higher than a certain level. . The influence of the wire harness 71 on the reception performance such as the antenna gain provided in the keyless entry receiver 12 can be reduced. Therefore, it is preferable to set the shape of the receiver housing 24 in consideration of the interval between the antenna 6 and the wire harness 71 which is necessary for receiving performance. A cover that covers the receiving circuit board and a cover that covers the antenna may be provided separately.
[0030]
In addition, the direction of the receptacle of the wire harness side connector is downward in the illustrated example, but may be upward, or the board side connector may be arranged such that the male terminals are arranged in the vertical direction. The receptacle may face away from the keyless entry receiver.
[0031]
(2nd Embodiment)
4 and 5 show a meter device according to a second embodiment of the present invention. The basic configuration of the meter device 1A is the same as that of the first embodiment, and portions having substantially the same operations as those of the first embodiment are denoted by the same reference numerals, and differences from the first embodiment are described. I will explain mainly.
[0032]
On the back surface 22 a of the meter lower housing 22, a belt for a bundled wire is located at a position in a direction in which the receptacle 722 of the wire harness side connector 72 faces, that is, a position where the wire harness 71 extending substantially straight from the receptacle 722 of the wire harness side connector 72 passes. 81 are attached. The wire harness 71 extending along the direction in which the receiving port 722 of the wire harness side connector 72 faces is fixed to the meter lower housing 22 by the bundled belt 81. The binding belt 81 is made of a flexible synthetic resin. After the wire harness 71 is made to extend along the back surface 22 a of the meter lower housing 22, both ends 811 of the binding belt 81 are connected to the meter lower housing 22. The wire harness 71 is fixed to the meter lower housing 22 by inserting the wire harness 71 into the mounting hole 202 penetrating in the thickness direction. Both ends 811 of the bundled belt 81 each have a constricted portion having a cross-sectional shape slightly larger than the shape of the mounting hole 202, and the front end is wider than the constricted portion, and serves as a stopper.
[0033]
Thus, of the extra length of the wire harness 71, the portion 711 connected to the wire harness side connector 72 is further suppressed from bending toward the keyless entry receiver 12 located to the right of the connectors 46 and 72. it can.
[0034]
Here, the bundled belt does not need to strongly press the wire harness 71 against the back surface 22 a of the meter lower housing 22. This is because the degree of freedom of the wire harness may be considerably limited by the bundled belt.
[0035]
(Third embodiment)
FIG. 6 shows a meter device according to a third embodiment of the present invention. The basic configuration of the meter device 1B is the same as that of the first embodiment, and portions having substantially the same operations as those of the first embodiment are denoted by the same reference numerals, and differences from the first embodiment are described. I will explain mainly.
[0036]
At the position surrounding the meter device 1B, a bundle belt 81 is attached to the instrument panel 9 at a position where the wire harness 71 extending substantially straight from the receptacle 722 of the wire harness side connector 72 with only vertical slack passes. ing. The wire harness 71 extending along the direction in which the wire harness-side connector receptacle 722 faces is fixed to the back surface of the instrument panel 9 by the bundled belt 81. As in the second embodiment, the bundled belt 81 is fixed by inserting both ends 811 of the bundled belt 81 into the mounting holes 901 passing through the instrument panel 9.
[0037]
As a result, the wire harness 71 is positioned at the position of the bundled belt 81, and the portion 711 of the extra length of the wire harness 71 connected to the wire harness side connector is further positioned to the right of the connectors 45 and 72. Of the keyless entry receiver 12 can be suppressed.
[0038]
The wire harness 71 may be fixed by another member on the vehicle body side of the instrument panel, for example, by a reinforcement installed laterally behind the meter device.
[0039]
(Fourth embodiment)
FIG. 7 shows a meter device according to a fourth embodiment of the present invention. The basic configuration of the meter device 1 </ b> C is the same as that of the first embodiment, and portions having substantially the same functions as those of the first embodiment are denoted by the same reference numerals, and differences from the first embodiment are described. I will explain mainly.
[0040]
In the meter device main body 11C, the board-side connector 45 of the meter circuit board 4C is disposed slightly to the right of the horizontal center portion, which is the longitudinal direction of the meter circuit board 4C, in the drawing, and the length of the meter lower housing 22 is extended. It protrudes from the right side position in the figure slightly from the center in the horizontal direction which is the direction. On the contrary, the keyless entry receiver 12 is disposed on the left side of the horizontal center portion of the meter lower housing 22 and at the left end farthest from the board side connector 45.
[0041]
The distance between the keyless entry receiver 12 and the main connector 45 can be sufficiently increased, and the influence of the wire harness 71 on the reception performance such as the antenna gain provided in the keyless entry receiver 12 can be reduced. The present invention can be applied to a case where the keyless entry receiver 12 is housed in the meter lower housing 22 together with the meter circuit board 4C.
[0042]
The invention described in each of the above embodiments can be applied not only to the meter device but also to a car navigation device that displays navigation information such as map information as information directed to an occupant. Further, the present invention can be applied not only to a keyless entry receiver but also to a meter device incorporating another radio wave receiver.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a first keyless entry receiver integrated meter device to which a vehicle information display device of the present invention is applied.
FIG. 2 is a perspective view of the meter device.
FIG. 3 is a side view of the meter device.
FIG. 4 is a perspective view of a second keyless entry receiver integrated meter device to which the vehicle information display device of the present invention is applied.
FIG. 5 is a sectional view taken along line VV in FIG. 4;
FIG. 6 is a perspective view of a third keyless entry receiver integrated meter device to which the vehicle information display device of the present invention is applied.
FIG. 7 is an exploded perspective view of a fourth keyless entry receiver integrated meter device to which the vehicle information display device of the present invention is applied.
FIG. 8 is a perspective view of a typical example of a conventional meter device integrated with a keyless entry receiver.
[Explanation of symbols]
1, 1A, 1B, 1C meter device (vehicle information display device)
11, 11C Meter device body 12 Keyless entry receiver (radio wave receiver)
21 Upper housing (housing)
22 Lower housing (housing)
24 Receiver housing (cover)
3 display unit 31 pointer 32 trip meter 4 meter circuit board (control circuit board)
4a Meter circuit (control circuit)
45 Board side connector (connector)
5 Receiving circuit board 5a Receiving circuit 6 Antenna 71 Wire harness 72 Wire harness side connector 722 Receptacle 81 Bundling belt (fixing means)
9 Instrument panel (body side)

Claims (5)

A control circuit board having a display unit for displaying information for occupants on a front surface and having a control circuit for controlling display contents on the display unit is provided in the housing, and a rear surface of the housing is provided. The vehicle information display device provided with a radio circuit receiver including a receiving circuit and an antenna, together with a connector for connecting the control circuit and the wire harness on the side, wherein the wire harness includes a traveling information display device. An information display device for a vehicle provided with a surplus portion for preventing the wire harness from being pulled when detached from the instrument panel,
The information display device for a vehicle, wherein the connector has a receiving port for receiving a distal end portion of the wire harness oriented substantially in parallel to a rear surface of the housing and in a direction not facing the radio wave receiver. . 2. The information display device for a vehicle according to claim 1, further comprising: fixing means for fixing the wire harness to the housing on a rear surface of the housing. 2. The information display device for a vehicle according to claim 1, wherein a fixing means for fixing the wire harness to the member is provided on a member on a vehicle body disposed near a back surface of the housing. A control circuit board having a display section for displaying information for an occupant on a front surface, and a control circuit for controlling display contents on the display section being disposed in a housing; On the back side of the vehicle information display device provided with a radio circuit receiver comprising a receiving circuit and an antenna together with a connector for connecting the control circuit and the wire harness, wherein the wire harness has a running information display In a vehicle information display device provided with a surplus portion to prevent the wire harness from being pulled when the device is removed from the instrument panel,
An information display device for a vehicle, wherein the radio wave receiver includes a cover that covers at least the antenna. A control circuit board having a display section for displaying information for an occupant on a front surface, and a control circuit for controlling display contents on the display section being disposed in a housing; On the back side, a radio wave receiver including a receiving circuit and an antenna is provided, together with a connector for connecting the control circuit and the wire harness, and the connector is biased in one of the longitudinal directions of the control circuit board. An information display device for a vehicle, wherein the wire harness has a surplus portion for preventing pulling of the wire harness when the traveling information display device is removed from an instrument panel,
The information display device for a vehicle according to claim 1, wherein the radio wave receiver is disposed inside or outside the housing at a position corresponding to the other longitudinal direction of the control circuit board.

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