JPH01278852A - Instrument device - Google Patents

Abstract

PURPOSE:To perform check work for an instrument body so easily by installing a display part for current-energization checking exposedly on a case outer surface, and installing an opening, making display action of this display confirmable, at the side of a holder. CONSTITUTION:An FPC plate is set up in a rear face 4 of a rear case 2 of an instrument system 1. In this FPC plate, there are provided with a connector part 10 and an LED (light emitting diode) 14 at the out side of the rear case 2. In addition, an opening 19 is formed in the upper part of an instrument panel 16 as opposed to a bending part 8 where the light emitting diode 14 is installed. Since the instrument system 1 can not directly sight light emitting diode 14 exposed to the outside of the rear case, a fact that whether the instrument body is normal or not is checkable, thus the check work is easily performable.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an instrument device installed in a motor vehicle.

[Conventional technology]

Generally, moving objects such as automobiles, motorcycles, and motorboats have various instruments such as speedometers, warning lights, and alarms to inform the driver of running speed, engine speed, or abnormalities in various installed parts. are housed and fixed inside the case, and these instruments are operated by receiving electrical signals via an FPC board (flexible printed circuit board) installed on the back of the case. A meter device is built in, which is covered with a see-through case that allows the operation of the meter body to be visually confirmed. In such a meter device, after the meter body is fixed in the case, the finger strength of the meter body may be adjusted, the current conduction test, etc.
As disclosed in Japanese Patent No. 57-6014, etc., a configuration is known in which tools and instruments for operating the meter body can be inserted through a through hole formed in the rear surface of the case.

[Problem to be solved by the invention]

By the way, when the instrument device is used for an automobile, it is installed in the instrument panel in such a way that fixing members such as mounting bolts are not exposed to the driver and cannot be easily removed under normal conditions. By connecting wiring cords routed from electrical equipment such as batteries and various detection sensors disposed on the vehicle body side to the FPC board, the electrical equipment and the meter body are electrically connected.

However, if a malfunction occurs in the instrument body after it is installed on the vehicle body, the cause may be due to the instrument device, electrical equipment,
It is not possible to determine whether it is in the wiring cord or the connection point between the FPC board and the wiring cord, so it is necessary to check each part and location, but when checking the instrument body, there is a through hole on the back of the case. Even if the configuration of the prior art example provided with the above can be applied to the operation check, the instrument device must be removed from the instrument panel once, which is a very complicated work, especially for automobile instrument devices that are not easy to attach and detach. You will be forced to do so.

[Purpose of the invention]

The present invention was conceived with attention paid to the problems of the conventional example, and an object of the present invention is to provide an instrument device that allows extremely easy checking of the instrument device after assembly.

[Means to solve the problem]

In order to achieve the above-mentioned object, the present invention provides an FPC installed and fixed inside a holding body such as an instrument panel formed on the vehicle body side, and which is disposed on the rear surface of the case and receives electrical signals from electrical equipment disposed on the vehicle body side. In a meter device that is supplied to the meter body in the case via a board, conduction is conducted to an electrical connection point between the meter body and the FPC board, and a display operation is performed by an electric signal from the electric device for confirming energization. A display section is provided to be exposed on the outer surface of the case, and an opening is provided on the holder side to enable checking of the display operation of the display section.

[Effect]

A display section for confirming energization provided on the outer surface of the case can be visually confirmed through the opening on the side of the holder, and it is possible to confirm whether or not an electric signal is being input.

〔Example〕

Hereinafter, one embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 and 2 show an embodiment of the present invention applied to a vehicle meter.

The instrument device 1 includes a movable magnet instrument, a moving coil instrument, etc., which have a well-known structure such as a speedometer, fuel gauge, thermometer, etc. in the rear case 2, and have an analog display using a pointer.
Alternatively, the instrument body (not shown) that receives electrical signals and performs display operations, such as a liquid crystal display element that displays digital numbers or multiple segments, or a display that operates a fluorescent display tube using a driving circuit board, is housed and fixed. , A front case 3 is provided on the front side of the rear case 2 and has a see-through window so that the display operation of the instrument body due to the input of an electric signal corresponding to the measured quantity can be visually confirmed.The rear case 2 and the front case 3 and are integrally fixed by a predetermined locking means such as hook engagement or screw fastening. Further, an FPC board 6 is disposed on the rear surface 4 of the rear case 2 by press-fitting a pin 5 installed upright on the rear surface 4, and a part of the periphery of the FPC board 6 is attached to the side surface 7 of the rear case 2. It is extended to form a bent portion 8, and this bent portion 8 is arranged and fixed on the side surface 7 with screws 9.

The FPC board 6 is connected to an electrical device disposed on the vehicle body, such as a battery, a rotation detection sensor, a remaining liquid level detection sensor in the tank, an engine exhaust temperature detection sensor, etc., which supplies an electrical signal according to the measured amount. A conductive circuit consisting of a connector section 10 for electrical connection to a wiring member (not shown), and a predetermined circuit wiring pattern using copper foil or the like to supply electrical signals from the connector section 10 to the meter body, lamp, etc. 11, and an LED (light emitting diode) that is integrated in the bent portion 8 and is connected between the electrical signal supply circuit 12 and the ground circuit 13 of the conductive section 11, and is a display section for confirming energization.
14 is provided outside the rear case 2.

The conductive part 11 is connected to the meter body via a screw 15 made of a conductive material. 14 LEDs in intermediate or extended position
has been established. That is, the LED 14 lights up when an electric signal is supplied, and is turned off when no electric signal is supplied.

The instrument bag W1 having the above configuration has a mounting arm part that protrudes to the rear and sides of the rear case 2 with bolts 17, inside the instrument panel 16, which is a holding body for mounting and supporting, and is formed on the vehicle body side. It is attached and fixed via 18.

Additionally, an LED is provided at the top of the instrument panel 16.
An opening 19 is formed opposite the bent portion 8 provided with the opening 14, and this opening 19 is normally closed with a cover 20 after the instrument device 1 is attached and fixed.

Therefore, after the instrument device 1 is connected to the electrical equipment on the vehicle body side and fixed in the instrument panel 16, malfunctions such as the instrument body not operating even though the instrument is in an operating state, such as when the ignition switch is turned on, may occur. If this occurs, the electrical equipment.

Wiring, connector part 10. It is necessary to inspect whether the cause is the connection point, the instrument body, etc. At this time, the instrument device 1 opens the cover of the instrument panel 16 to detect the LED 1 exposed outside the rear case 2.
4 can be directly viewed, it is possible to check whether the instrument body is normal or abnormal by checking the display operation of this LED 14, and this can be checked extremely easily without removing it from the instrument panel 16. In addition, when the LED 14 is turned off, that is, when the cause of the failure is caused by something other than the instrument body 1, complicated attachment and detachment operations can be avoided in advance.

Note that the wiring pattern on the FPC board 6 is complicated and the LED
14 cannot be provided intensively, a plurality of bent portions 8
It may be divided into two parts.

In addition, as long as the opening allows the display section to be viewed directly or indirectly, the size and shape of the opening may vary.
When the aperture does not face the display section or when the aperture is only as large as the display section, an appropriate setting may be made such as arranging a light guide member connecting the aperture and the display section.

Further, in the above embodiment, the LED 14 was provided on the FPC board 6, but a holder 22 incorporating a light emitting element 21 such as an LED stored in a lens is fixed to the side surface 7 of the rear case 2, and an electric cord 23 is connected to the FPC board 6. A display section may be provided by connecting to the conductive section 11 (see FIG. 3).

Furthermore, the display section can be selected from various types other than LEDs, such as a light-emitting element such as a lamp, or a light-receiving type display element such as a cholesteric liquid crystal element that changes the color of transmitted light when energized.

〔Effect of the invention〕

The present invention provides an FP that is installed and fixed inside a holding body such as an instrument panel formed on the vehicle body side, and that receives electrical signals from electrical equipment disposed on the vehicle body side.
In a meter device that is supplied to the meter body in the case through the C board, conduction is conducted to the electrical connection point between the meter body and the FPCFi, and a display operation is performed by an electric signal from the electric device. A display section is provided exposed on the outer surface of the case, and an opening is provided on the holder side to enable confirmation of the display operation of the display section, which facilitates checking of the instrument body after it is assembled into the holder. It is possible to provide an instrumentation device that can be used extremely easily.

[Brief explanation of the drawing]

FIGS. 1 and 2 are cross-sectional views of one embodiment of the present invention. FIG. 3 is a perspective view of a main part, and FIG. 3 is a side view of a main part of another embodiment of the present invention. 1-Instrument device 2-Rear case 3--Front case 4--Rear surface 6--FPC board
7-Side surface 8-・Bending portion 11-・-Conductive portion 12-・
Electrical signal supply circuit 13-ground circuit 14-/LED
(Display part) 15-... Screw 16- Instrument panel (holding body) 19-... Opening 21
-Light emitting element (display part) Figure 1

Claims (1)

[Claims] (1) The instrument panel, etc., formed on the vehicle body side is installed and fixed in a holding body, and electrical signals from electrical equipment disposed on the vehicle body side are transmitted to the interior of the case through an FPC board disposed on the rear surface of the case. In the meter device supplied to the meter body, a display portion for confirming energization that is electrically connected to the electrical connection point between the meter body and the FPC board and performs a display operation based on an electric signal from the electric device is provided on the outer surface of the case. 1. An instrument device characterized in that an opening is provided on the holding body side so as to be exposed to the display section so as to enable confirmation of the display operation of the display section.