JPS5917111A - Meter for vehicle - Google Patents

Abstract

PURPOSE:To make a display system compact and to improve the workability in assembling a meter, by providing a control circuit which controls a light emitting element according to the signal from a sensor for detecting electrically the operating condition of a vehicle. CONSTITUTION:A meter 1 for a vehicle is constituted of a pointer 5 fixed to a driving shaft 2 according to an input signal, a light emitting element 6 disposed in the pointer 5, a cover 7 for fixing the element 6, a connecting mechanism part 8 for connecting the connection wire of the element 6 to an external circuit, etc. The display system is made compact and the workability in assembling the meter is improved according to such constitution.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vehicle meter, and more particularly to a meter with an illuminated pointer.

2. Description of the Related Art In recent years, meters for vehicles have been adopted with illuminated needles to improve the visibility of the needles, especially at night. Such meters have a light emitting source located near the pointer, and light is guided to the pointer via a light guiding member such as a transparent acrylic plate or an optical fiber to illuminate the pointer.
Alternatively, a light emitting element is provided on the pointer itself to directly illuminate the pointer.

However, in the former case, the path for guiding light to the pointer becomes complicated, and in the latter case, the workability of assembling the light emitting element to the pointer is low. Furthermore, such meters merely illuminate the pointer to improve its visibility.
It has no other functions.

The present invention has been made in view of the above points, and aims to improve the ease of assembling the meter, and to provide a display function such as an alarm function in addition to the illumination of the pointer, so that it can be used for multiple purposes. purpose. In order to achieve this object, the present invention provides a vehicle meter in which a light emitting element is arranged in the meter pointer to illuminate the pointer, based on a signal from a sensor that electrically detects the driving state of the vehicle. A vehicle meter comprising a control circuit for controlling the light emitting element, illuminating a pointer and having a display function for displaying the driving state of the vehicle;
and a vehicle meter in which a light emitting element is arranged in the pointer of the meter to illuminate the pointer, a groove is formed in a predetermined position 1w of the base of the pointer fixed to the drive shaft of the meter, and the pointer is housed in the groove. a light-emitting element that illuminates the pointer; a cover that is attached to the base of the pointer and fixes the light-emitting element in the groove; and a cover that controls the light-emitting element based on a signal from a sensor that electrically detects the driving state of the vehicle. Equipped with a control circuit,
The present invention provides a meter for a vehicle that is easy to assemble.

An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a vertical cross-sectional view of a main part of a vehicle meter according to the present invention, and FIG. 2 is a cross-sectional view taken along the arrow line AA in FIG. 1. are a meter body 6, a dial 4, and a drive shaft 2 that drive the drive shaft 2 according to an input signal.
A pointer 5 fixed to the pointer 5, a light emitting element 6 disposed inside the pointer 5, a cover 7 for fixing the light emitting element 6, and a light emitting element +
It is composed of a connection mechanism section 8 and the like for connecting the connection line No. 6 to an external circuit.

A shaft hole 5b is vertically bored approximately in the center of the base 5α of the pointer 5. The upper portion 5c of the shaft hole 5b has a larger diameter than the lower portion 5d and is provided with a threaded portion. Further, a groove 5f is formed in the upper part of the base 5α of the pointer 5 and above the shaft hole 5h, and extends from the rear end 5e toward the tip (not shown) in the direction of the handle. Step part 59.5k.

5L is formed. The pointer 5 having such a shape is made of, for example, a transparent acrylic member. The bearing 10 is the pointer 5
The shaft portion 10α is fitted into the shaft hole lower portion 5d, and the upper portion 10b is screwed into the shaft hole upper portion 5C. A shaft hole 10c is located at the axial center position of the shaft portion 10α of the bearing 10.
A groove 10f is formed in the diametrical direction of the protrusion 10e, which is formed to protrude approximately at the center of the upper end of the upper portion 10d. A meter drive shaft 2 is fitted into the shaft hole 10c of this bearing 10. The bearing 10 having such a shape is made of a conductive metal member, such as a brass member.

The light emitting element 6 is a bicolor light emitting element and has a plurality of built-in light emitting diodes, for example, two light emitting diodes, and the light emitting part 6α is located in the groove 5f of the pointer 5.
The light emitting surface 6b is arranged as shown in the figure so as to face toward the unillustrated tip of the pointer 5, and the lead m6
0 to 6e pass through the groove 5f and extend to the rear end 5e of the pointer 5.

The ground lead wire 6C is bent into a substantially U-shape, and its tip is fitted into the groove 10f of the protrusion 10g of the bearing 10, and is crimped into the groove 10f to be electrically connected and mechanically connected. is fixed to. The other two connecting wires 6d and 6g are bent as shown in the figure along the stepped portion of the rear end portion 5e of the pointer 5, and the lead wire 6d is press-fitted into the stepped portion 5A of the finger button 5. It is fixed to this stepped portion 5h via an annular fixing member 12, and the tip portion extends to approximately the center of the stepped portion 5i. Further, a spacer 11 is fitted into and out of the stepped portion 5g of the pointer 5 from the back side of the dial 4.

This spacer 11 is used to loosely lock the pointer 5 to the dial 4 so that the pointer 5 does not come out of the hole 4α of the dial 4, thereby improving workability during assembly.

The partition plate 13 has a substantially U-shaped cross section and has a hole 1' in the center of the bottom.
5a is drilled and the upper end 13,6.131! I is fixed to the back surface 4b of the dial 4 by heat crimping to protrusions dc and 4C formed protruding from the back surface 4h of the dial 4 made of a synthetic resin member. The partition plate 16 is made of an insulating material such as a synthetic resin material. The lowermost stepped portion 5 of the pointer 5 and the connection line 6d of the light emitting element 6 play in the hole 16α of the partition plate 13.

The lead wires 15 and 16 are made of a conductive elastic part, such as a rectangular spring made of bronze material, and the lead is 1%! 15 loosely spirals the outer side of the annular fixing member 12 that fails to fit into the stepped portion 5AK of the pointer 5 to the extent that it does not touch the fixed member 12, and the Riet wire 16 connects the outer side of the stepped portion 5L of the pointer 5 to the said step. Part 5
It is formed in a loose spiral shape so that it does not touch L. These leads! The tips of the lead wires 6d and 5g of the light emitting element 6 are connected and fixed to the inner ends 15α and 16α of 15.16 by soldering, and the outer ends 15+5.16b are one end of the connection terminal 17.18, respectively. The connecting terminals 17 and 18 are respectively bent into an oval shape, and the other ends 17h and 18 are connected and fixed to the portions 17α and 18α by soldering.
A is a protrusion 4d formed protrudingly on the back surface 4h of the dial 4.
, 4g. These lead wires 15
．． 16 are prevented from coming into contact with each other by the partition plate 13.

The cover 7 has a substantially box-like shape, and has a slit 7b approximately in the center of the front side 7α, and a downwardly projecting protrusion 7g formed by a spring at a predetermined position 1#' from the rear side of the upper surface 7d. The cover having such a shape is integrally formed on the synthetic resin portion side. This cover 7 is attached to the upper part of the base part 5α of the pointer 5 as shown in the figure, the pointer 5 is inserted into the slit 7b, and the upper part of the issuing part 6α of the issuing element 6 is pressed by the tip of the protrusion 7e to open the slit 7b. The open end 7C of the needle 5 is heat-sealed to the pointer 5. and,
This cover 7 fixes the issuing element 6 within the structure 5f of the pointer 5. In this way, the light emitting element 6 is built into the base of the pointer 50.

FIG. 6 shows a control circuit for the issuing element 6. A vehicle speed sensor 21 detects the vehicle speed and outputs a corresponding heavy speed signal Vz, which is applied to the comparator 26 of the control circuit 22. Comparator 23
compares the vehicle speed signal Vs with a reference vehicle speed signal Vc corresponding to a reference vehicle speed, for example, OKm/A, and outputs a signal when Vs ) Vc. Changeover switch 25 of changeover circuit 24
The required voltage +Vcc is applied to both j1η contacts 25a, and the resistances R, , I? are applied to the contacts 25b and 25C. , are connected. Changeover switch 25ii is connected to contact 25c when no signal is applied from comparator 23, and connected to contact 256 when a signal is applied from comparator 26.

The resistors R, , R, are connected to connecting terminals 17 and 18 shown in FIG. For example, red is the color that Element 6 has a sense of Heizo.

Green light emitting diode 61? , 6GK is connected.

Further, the ground lead wire 6c of these issuing diodes 6R96G is grounded via the drive shaft 2 of the meter as described above. Further, the meter 1 is used, for example, as a vehicle speedometer, and is designed to indicate the vehicle speed.

In this configuration, when the vehicle speed is less than 30b+/A, no signal is output from the comparator 26, and the changeover switch 2
5 is connected to the contact 25C, and a light emitting diode 6GKq current flows from the contact 25α through the contact 25c and the resistor R7, and the light emitting diode 6G lights up. As a result, the pointer 5 is illuminated in green.

When the vehicle speed exceeds +n/A to 30, a signal is output from the comparator 26 and the selector switch 25 is switched to the contact 25b.
The light emitting diode 6R is lit in place of the light emitting diode 6G, thereby illuminating the pointer 5 in red. In this way, the driver is warned that the color of the pointer 5 has changed and the vehicle speed has exceeded a certain vehicle speed.

FIG. 4 shows another embodiment of the control circuit, in which the vehicle speed sensor 21
The vehicle speed signal 11c output from the control circuit 26 is applied to a comparator 27 of the control circuit 26. The comparator 27 compares the vehicle speed signal Vs with the reference vehicle speed signal Vc corresponding to the reference vehicle speed, for example, 3OKllll/A as described above. .

The oscillation circuit 28I'i includes, for example, two inverters 29 connected in series. O, a capacitor C1 connected between the output side of the inverter 60 and the input side of the inverter 29, and a connection point between the output side of the inverter 29 and the input side of the inverter 60, the input side of the inverter 29, and the capacitor C. , and outputs a pulse signal pc of a frequency determined by the capacitor C and the resistor R. This pulse signal 1)C is applied to an AND circuit 61. The AND circuit 61 is opened when a high level signal is input from the comparator 27, and outputs a pulse signal pc. The output side of this AND circuit 31 is connected to the connection terminal 1 of the meter 1 shown in FIG.
7 is connected. The connection terminal 17 is connected to the light emitting diode 6R via the lead retainer 6d.
G is applied with an indenter Vcc through a resistor R8.

When the vehicle speed is lower than 30 km/A, the output of the comparator 27 is at a low level, the AND circuit 31 is inactive, the light emitting diode 6R is off, and the pointer 5 is illuminated in green by the light emitting diode 6G. has been done. When the vehicle speed exceeds 30 Km/A, the output of the comparator 27 becomes the NO level, the AND circuit 31 is activated, and the pulse signal pc is applied to the light emitting diode 6R through the AND circuit 61. The light emitting diode 6R flashes in response to this pulse signal pc, illuminating the pointer 5 in red. In this way, the blinking light of the pointer warns the driver that the vehicle speed is higher than a certain vehicle speed.

In this embodiment, a case has been described in which the vehicle speed is warned as control of the light emitting element, but the invention is not limited to this, and warnings of other driving conditions such as oil temperature, cooling water level, fuel level, etc. Of course, it can be used as an indicator.

Further, monochromatic or multi-colored light emitting elements may be used, and various lighting methods may be used, such as a combination of blinking and blinking, or alternately changing the color of the illumination.

As explained above, according to the present invention, the control circuit controls the light emitting element to change the illumination of the pointer based on the signal from the six sensors that electrically detect the driving state of the vehicle. In addition to improving visibility, the display system can be provided with a warning function or various display functions, and the display system can be made more compact. Furthermore, a groove is formed at the base of the pointer which is fixed to the drive shaft of the meter,
A light emitting element for illuminating the pointer is housed in this groove, and the light emitting element is fixed in the groove by a cover attached to the base of the pointer, so that the workability of setting the meter is improved.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of essential parts showing an embodiment of a vehicle meter according to the invention, FIG. 2 is a cross-sectional view taken along the line A-A in FIG.
This figure is a block diagram showing one embodiment of the control circuit for the light emitting element shown in FIG. 1, and FIG. 4 is a block diagram showing another embodiment of the control circuit. 1...Meter, 2...Drive shaft, 3...Meter body, 4...Dial, 5...Pointer, 6...Light emitting element,
7... Cover, 8... Connection mechanism, 10... Bearing,
12... Same foot member, 15° 16... Lead wire, 17
．． 18... Connection terminal, 21... Vehicle speed sensor, 22.
26...Control circuit. Applicant Honda Motor Co., Ltd. Agent Patent Attorney Toshihiko Watanabe

Claims (1)

[Claims] 1. In a main vehicle meter in which a light-emitting element is disposed in a meter pointer to illuminate the pointer, the light-emitting element is activated based on a signal from a sensor that electrically detects the operating state of an axle. A vehicle meter characterized by being equipped with a control circuit. 2. The vehicle meter according to claim 1, wherein the light emitting element includes a plurality of light emitting elements; 6. The control circuit switches the plurality of light emitting elements on the front dpi to turn on the meter. %W [Axle meter according to claim 1 or 2. 4. The vehicle meter according to any one of claims 1 to 6, wherein the control circuit controls blinking of the light emitting element. 5. In a vehicle meter in which a light-emitting element is arranged in the meter pointer to illuminate the pointer, a groove is formed at a predetermined position at the base of the pointer fixed to the drive shaft of the meter, and the above-mentioned pointer is housed in the groove. A light emitting element that illuminates the pointer; a cover that is attached to the base of the pointer and fixes the light emitting element in the groove; and controlling the light emitting element based on a signal from a sensor that electrically detects the driving state of the vehicle. A vehicle meter comprising: a control circuit for controlling a vehicle; 6. A predetermined one of the plurality of connection lines of the light emitting element is electrically connected to the drive shaft of the meter via a conductive bearing member fixed to the base of the pointer. A vehicle meter according to claim 5, characterized in that: