JPH0735979B2 - Vehicle instrumentation - Google Patents

Description

TECHNICAL FIELD The present invention relates to a vehicle instrument device having a self-luminous indicator capable of emitting light with high luminous intensity.

[Conventional technology]

Conventionally, in JP-A-1-277718, a pointer boss is fixed to a meter shaft of a pointer driving means, and a discharge tube that serves as a pointer is attached to the pointer boss.

Further, the power supply to the pair of electrodes of the discharge tube is performed by connecting the pair of current-carrying terminals contacting these electrodes to the first and second hair springs,
Electric current is supplied through the fixing metal fittings and the lead wires. As a result, the discharge tube emits light and the visibility of the pointer can be made excellent.

[Problems to be Solved by the Invention]

However, in the above-mentioned conventional one, since the pair of power supply terminals and the first and second hair springs are connected by soldering, the workability due to soldering in a narrow space is poor. was there.

[Means for Solving the Problems]

Therefore, the present invention provides a pointer driving device (400) for rotating the meter shaft (430) according to an input signal, and an insertion portion (11) inserted into the meter shaft of the pointer driving device.
1), a light emitting portion (101) fixed to the insertion portion to form a light emitting region in the longitudinal direction, first and second electrodes (106, 107) for supplying a current to the light emitting portion, and First
First terminal 8130 made of metal having a contact portion (134) for contacting the electrode and a connecting portion (131) extending in the axial direction of the meter shaft, a contact portion (144) for contacting the second electrode, and A connecting part (1
A self-luminous indicator (1) provided with a metallic second terminal (140) having a terminal (41), extending in the axial direction of the meter shaft, inserted into the connecting portion of the first terminal, and the meter. A metal first insertion member (230) fixed to the shaft, and a metal fixed to the meter shaft while extending in the axial direction of the meter shaft and inserted into the connection portion of the second terminal. A second insertion member (250) made of metal, a first spiral-shaped metal spring (220) whose one end side is connected to the first insertion member, and one end side which is connected to the second insertion member A second spiral-shaped metal spring (240) and first and second springs (240) connected to the other ends of the first and second springs, respectively, for supplying current to the first and second sprinkles. To provide a vehicle instrument device having two power supply terminals (320, 330) and It is intended.

[Operation and effect of the invention]

As described above, by inserting the insertion portion of the self-luminous pointer into the meter shaft of the pointer driving device in the axial direction of the meter shaft,
The first and second terminals are inserted into the first and second insertion members connected to the first and second springs, and the first and second self-luminous pointers are inserted.
Current is supplied to the first and second electrodes from the first and second power supply terminals.

Therefore, the self-luminous pointer is inserted into the meter shaft of the pointer driving device, and at the same time, the power feeding path is established, so that the current can be easily supplied to the self-luminous pointer.

〔Example〕

The pointer assembly 1 forming the self-luminous pointer shown in FIGS. 1 to 7 will be described.

The discharge tube 100, which is the main part of the self-luminous pointer, is an elongated hollow rod-shaped bulb that emits light, as shown in FIGS. 3 and 4.
101 and an end portion 101a in the valve 101 (rear end on the rotation center side)
The valve 1 is provided with an internal electrode 102 and an external electrode 103 which is attached to the outer surface of the bulb 101 in a strip shape in the longitudinal direction.
A fluorescent coating 104 is applied to the inner surface of 01.

The valve 101 has a tip 101b in the shape of a hemispherical shell, a middle portion 101c in the shape of a cylinder, and an inert gas is filled in the hollow interior. The end portion 101a of the valve 101 is solid, and includes a narrow portion 105 and a pair of power receiving portions 106 having a rectangular cross section. A bare lead wire 102a connected to the internal electrode 102 is embedded in the center of the end portion 101a.
The end part of is bent and pressed against the surface of the power receiving unit 106. A conductive layer 106a made of silver paste is applied to the surface of the power receiving portion 106 to achieve electrical conduction with the bare lead wire 102a. A strip-shaped conductive layer 103a made of silver paste is applied to the tip end side of the narrow portion 105 of the valve 101 in the circumferential direction to form a power receiving portion 107 of the external electrode 103.

The outer surface of the bulb 101 is covered with a light shielding film 108.
This light-shielding film 108 has a width of 1 mm and a presymbol 55 in the axial direction of the bulb 101.
A slit 109 of mm is opened, and this portion serves as a light-transmitting surface through which light can be transmitted. Further, the rear end of the slit 109 is provided 2 mm away from the internal electrode 102 on the front end side.

The external electrode 103 is formed by applying a conductive material paste such as carbon phenol or silver paste on the outer surface of the bulb in a band shape in the axial direction. In this embodiment, as shown in FIG. 6, the width of the external electrode 103 is set larger as the distance from the power receiving unit 107 increases. As a result, the electrons emitted from the internal electrode 102 toward the external electrode 103 are made uniform over the entire external electrode 103, and the discharge tube 100 emits light with a uniform luminous intensity in the longitudinal direction.

The discharge tube 100 has an elongated hollow rod shape with a weight of 0.8 g and an outer diameter of 2.4 mm, and a gas mixture of xenon and neon is 90 Toor inside.
It is enclosed. When high-frequency power is supplied to the discharge tube 100, glow discharge is generated between the internal electrode 102 and the external electrode 103, and the fluorescent film 104 produces high-luminance visible light of 2000 cd / m ² .

The pointer boss 110, which constitutes the pointer fixing means, is made of polyether sulfone resin, and as shown in FIG. 1, a leg portion 111 that is a cylindrical insertion portion that is fitted onto the meter shaft 430, and a leg portion 111. Installed at right angles, fit the rear end of the discharge tube,
And a valve holder 112 made of an elastic member.

As shown in FIGS. 5 to 7, the valve holding portion 112 has an open annular cross-sectional shape slightly larger than a semicircle with an opening at the front (upper side in FIG. 1) and has an inner peripheral surface. Longitudinal ridges 112a, 112b, 112c are provided on both edges and in the middle. The tips of the ridges 112a, 112b, 112c are arranged at intervals of approximately 120 degrees, and are located on a circle having a diameter slightly smaller than the outer diameter of the discharge tube 100.

On both outer sides of the valve holding portion 112, ridges 113 and 114 are formed in the longitudinal direction so as to extend substantially backward, and the pointer boss cover 12
It is a 0 locking part. On the lower surface of the valve holder 112,
Rectangular grooves 115 and 116 for fixing the first and second power supply terminals 130 and 140 are provided in the longitudinal direction. In addition, the rear end of the valve holder 112 is connected to a groove at the bottom of the valve holder 112,
A support wall 118 having a letter-shaped notch 117 is provided.

Then, the discharge tube 100 has the rear portion of the protrusion 112a, 112b, 1
It is fitted between 12c and is fixed by the elasticity of the valve holding portion 112. At this time, since the support wall 118 is connected only to the bottom of the valve holding part 112 and separated from the side part, the valve holding part 112 is elastically deformed smoothly. Further, the support wall 118 is inserted into the narrow portion 105 of the discharge tube 100 to position the discharge tube 100 in the axial direction and the rotation direction.

The pointer boss cover 120 has a flat surface, and a slit 121 is formed on the front surface from the tip. Both sides of cover 120
122 and 123 are provided with claws 124 and 125 that engage with the protrusions 113 and 114 of the valve holding portion 112. Also, cover 120
A holding portion 127 having an L-shaped cross section is formed on the rear side, and a hole portion 128 is formed on the front end side of the holding portion 127. Further, disc-shaped protrusions 129 are formed on both sides of the cover 120.

As shown in FIG. 1, the first and second power supply terminals 130 and 140 forming the first and second terminals are the pointer bosses 110, respectively.
The rectangular connecting portions 131, 141 that come into contact with the outer peripheral surface of the leg 111 of the arm portion 133, 143 extend radially from one end of these connecting portions 131, 141, and the return plates 132, 142 project from both sides of the arm plates 133, 143.
And gripping portions 134 and 144 that are formed at the tips of the arm plates 133 and 143 and have a substantially inverted Ω shape and that are contact portions that hold the power receiving portions 106 and 107 of the discharge tube 100.

In addition, a pair of pressing portions 131a and 141a are formed on the connecting portions 131 and 141 in order to ensure electrical connection.

The power supply terminals 130 and 140 are returned to the arm plates 133 and 143.
132, 142 are rectangles 115 provided under the valve holder 112,
The valves are attached to the valve holding portion 112 by fitting them into the respective 116.

Further, a pair of locking portions 151 are formed on the side surfaces of the weight 150 for balance adjustment.

The holding member 160 for holding the weight 150 is formed so as to cover the weight 150, and holds the pair of stoppers 161 that engage with the pair of locking portions 151 and the cover 120. The hook portion 162 that engages with the hole portion 128 of the portion 127 and the weight 150.
Elastic part for pushing up and fixing to the inner surface of the cover 120
It consists of 63 and.

Then, after the locking portion 151 of the weight 150 is engaged with the stopper portion 161 of the holding member 160 and stored, the holding member 160 is covered.
While being inserted into the holding portion 127 of the, at that time, the hook portion 162 engages with the hole portion 128 of the holding portion 127, the elastic portion 163,
The weight 150 is held in the cover 120 by being pressed against the inner surface of the cover 120.

Next, the insulator assembly 200 will be described with reference to FIGS. 8 to 10.

The circular rotary plate 210 is made of an insulating resin, has a hole 211 into which the meter shaft 430 is inserted, and a recess 212 formed on the surface of the plate 210 and in the vicinity of the hole 211.
It is formed of a hollow protrusion 213 formed at a position facing the recess 212. Further, on the outer peripheral side of the plate 210, a stopper portion 215 having a step 214 on the side opposite to the rotating direction of the rotating plate 210 is formed.

A hollow member 221 made of metal, which is soldered or caulked and fixed, is connected to an inner peripheral end 221 of the first hair spring 220 and is wound a plurality of times.

The first pin 230 made of metal, which is the first insertion member, has a protrusion 231 formed on one end side thereof and the first pin 2
One end surface 232 of the protruding portion 231 is a rotation plate from one end side of 30.
Recess 2 of pivot plate 210 until it abuts surface 216 of 210
Pressed into 12.

The hollow member 222 of the first hair spring 220 is the first.
The pin 230 is press-fitted until it comes into contact with the other end surface 233 of the projecting portion 231 of the pin 230 so as to establish electrical connection with the first pin 230. At this time, the outer peripheral end 223 of the first hair spring 220 projects from the outer periphery of the rotating plate 210 and is bent into an L shape, as shown in FIG.

Similarly, the inner peripheral end 241 of the second hair spring 240 is attached to the hollow member 24 made of metal, which is soldered or caulked and fixed.
2 are connected and wound multiple times.

The metal second pin 250 forming the second insertion member also has a protrusion 251 formed on one end side thereof, and the second pin 2
The protruding portion 213 of the rotating plate 210 until one end surface of the protruding portion 251 abuts the back surface 217 of the rotating plate 210 from the one end side of the rotating plate 210.
Press into. At this time, the second pin 250 penetrates the protrusion 213 and has the same height as the tip of the first pin 230.

Further, the second hair spring 240 is press-fitted until the hollow member 242 comes into contact with the other end surface of the projecting portion 251 of the second pin 250, so that the second pin 250 can be electrically conducted.

Next, the fixer plate assembly 300 will be described with reference to FIGS. 11 to 16.

The fixer plate 310 is made of resin, and a rectangular plate portion 311 is formed with a hole portion 312 through which a pointer 430 penetrates in a central portion thereof, and an outer periphery of the hole portion 312, in which a second hair spring is housed. Circular step 313, rectangular through hole 314 for
a, 315a having axially extending first and second support portions 314, 31
5 and a screw hole 316 for mounting the plate 310.

First and second terminals 320, 33 forming first and second power supply terminals
As shown in FIG. 11 and FIG. 14, 0 is the flat surface portions 321 and 331 that abut on the fixer plate 310, and the flat surface portions 321 and 33.
Axial extension from one end of 1 and through holes of supporting parts 314, 315
Insertion parts 322, 332 inserted into 314a, 315a and the flat part
V-shaped caulking portions 323 and 333 extend in the axial direction from the other ends of 321 and 331. In addition, a pair of bent portions 324, 334 for fixing the first and second terminals 320, 330 on the fixer plate 310 are formed at intermediate positions of the flat portions 321, 331. Further, as shown in FIG. 12, the caulking portion 323 of the first terminal 320 is formed at a higher position than the caulking portion 333 of the second terminal 330.

The third terminal 340 is housed in the through holes 314a and 315a of the first and second support portions 314 and 315 of the fixer plate 310. Then, on the upper end side of the third terminal 340, as shown in FIGS. 13 and 15, the first and second terminals 320, 33 are provided.
The insertion parts 322 and 332 of 0 are inserted to measure electrical continuity,
A first press contact portion 341 having an elastic force is formed. Also,
At the lower end of the third terminal 340, as shown in FIG. 16, a second triangular pressure contact portion 342 into which a terminal pin 350 described later is inserted is formed. Further, the inclined protrusion 343 is formed in the through hole 314 of the first and second support portions 314 and 315.
The third terminal 340 is prevented from coming off by engaging with a step portion 317 formed on a and 315a.

The terminal pin 350 has a knurled portion 351 and a positioning step 352, and by press-fitting the terminal pin 350 into the through holes 314a, 315a of the support portions 314, 315 of the fixer plate 310 by the knurled portion 351, It is securely fixed to the fixer plate 310. At that time, the tip end portion 353 of the terminal pin 350 is inserted into the second press-contact portion 342 of the third terminal 340 to electrically connect with the third terminal 340.

Therefore, the pair of terminal pins 350 are electrically connected to the first and second terminals 320 and 330 via the third terminal 340.

Next, the inner unit 400 will be briefly described with reference to FIG. The internal unit 400 includes a bowl-shaped metal case 410, a cross coil 420 housed in the case 410, a meter shaft 430 that rotates by supplying an electric current to the cross coil 420, and a pair of columnar resin. It is made up of supporting parts 440 and 450.

Then, the inner unit 400 is fixed on the inner unit base 460, the ends 421 to 424 of the crossing coil 420 are connected to the terminals 470, and these terminals 470 are passed through the inside of the supporting portions 440, 450 and the substrate 460. Electrically connected on.

Then, as shown in FIG. 18, circuit elements such as resistors are incorporated on the substrate 460, and in accordance with signals from the outside,
Current is supplied from the terminal 470 to the crossing coil 420, and the pointer 430
Is rotated by a predetermined amount.

FIG. 21 shows the above-mentioned inner unit 400, fixer plate assembly 300,
The insulator 200 is housed in a meter housing 500.

The meter housing 500 is a base case 5
10 and a dial 520 having a letter and a scale attached to the front surface thereof. A transparent or semitransparent meter glass 530 is fixed to the front surface of the dial 520 so as to cover the dial 520. Furthermore, on the back of the meter case 510,
A meter sub-plate 540 which doubles as a wiring board is attached. Further, a protective plate 550 is provided on the back surface of the plate 540.

The certification lamp 560 is for illuminating the dial 520.

Next, a method of assembling the above structure will be described. First, the fixer plate assembly 300 is attached to the inner machine 400 fixed to the inner machine board 460. Assemble this fixer plate assembly 300 with the fixer plate 310
Is abutted on the surfaces of the pair of column-shaped supporting portions 440 and 450. Then, screw 480 into the screw hole of the fixer plate 310.
The fixer plate 310 is fixed to the inner unit 400 by screwing to the support portions 440 and 450 via 316. At this time, the pair of terminal pins 350 penetrates the through hole 461 of the internal unit substrate 460, and the meter shaft 430 penetrates the hole portion 312 of the fixer plate 310.

After that, the meter shaft 430 protruding from the fixer plate 310
Then, the hole portion 211 of the rotating plate 210 of the insulator 200 is press-fitted. At this time, the second hair spring 240 is attached to the inside of the circular step portion 313 of the fixer plate 310 and the rotary plate 210.
It is placed between and.

Then, as shown in FIG. 19, the first hairspring 220
The outer peripheral end 223 of the first terminal 320 is inserted into the V-shaped caulking portion 323 of the first terminal 320, and the caulking portion 323 is caulked to electrically connect the first hair spring 220 to the first terminal 320. Measure

In addition, the outer peripheral gap 243 of the second hair spring 240 is also inserted into the V-shaped crimp portion 333 of the second terminal 330, and the crimp portion 333 is crimped, whereby the second hair spring 240 and the second terminal Make electrical connections to and from the 330.

The assembly of the inner unit 400, the fixer plate assembly 300, and the insulator assembly 200 is shown in the plan view of FIG.

After mounting the dial 520, the pointer assembly 1 is attached to the meter shaft 430 of the internal machine 400. At this time, as shown in FIG. 20, the leg portion 111 of the pointer boss 110 is press-fitted into the meter shaft 430, and the first pin 230 of the insulator assembly 200 is inserted into the pressing portion 131a of the first power supply terminal 130. The second pin 250 of the insulator assembly 200 is inserted into the pressing portion 141a of the second power supply terminal 140.

As a result, as shown in FIG. 20, the power receiving portions 106 and 107 of the discharge tube 100 are connected to the wiring board of the meter sub-plate 540, the electrical connector 542, the pair of terminal pins 350, and the third terminal 34.
0 → first and second terminals 320, 330 → first and second hair springs 220, 240 → first and second pins 230, 250 → current is supplied through the first and second power supply terminals 130, 140, and discharge tubes 100 lights up.

Next, as shown in FIG. 21, the internal unit substrate 460 is incorporated in the meter case 510, and is fixed to the meter case 510 with the plurality of screws 570 together with the meter subplate 540.

At this time, the screw 570 is screwed into the terminal 462 electrically connected to the internal unit substrate 460, so that electricity is supplied from the meter sub-plate 540 to the internal unit substrate 460 via the screw 570. . Of course, the screw 570 is supplied with current through the wiring board printed on the mesa subplate 540.

When fixing the internal unit board 460 to the meter case 510, the terminal 350 fixed to the fixer plate 310 penetrates the hole 541 of the meter sub-plate 540 and the electrical connector 542.
Is similarly soldered to the wiring board printed on the meter sub-plate 540.

With the above-described configuration, when the leg portion 111 of the pointer boss 110 is press-fitted into the meter shaft 430, the first power supply terminal 130 is firstly connected to the first power supply terminal 130.
The second pin 250 is inserted into the second power supply terminal 140, and the current path can be easily established.

Also, the power supply to the first and second hairsprings 220 and 240 is
Simply insert the pair of terminal pins 350 into the electrical connector 542 of the meter sub-plate 540, and the third terminal 340,
Also, a current path can be easily formed through the first and second terminals 320 and 330, and the assembling property is remarkably improved.

Further, the fixing direction of the fixer plate assembly 300 (that is, the insertion direction of the terminal 350) and the pointer assembly 1
Insertion direction (meter axis 430 of leg 111 of pointer boss 110
Insertion direction) to each assy 30
There is no need to check the position when inserting 0, and the troublesome work during assembly is eliminated.

[Brief description of drawings]

1 is an exploded perspective view showing the pointer assembly of the device of the present invention, FIG. 2 is a cross-sectional view showing the main parts of the pointer assembly, FIG. 3 is a plan view of a discharge tube, and FIG. 4 is FIG. FIG. 5 is a plan view showing a state before applying the light-shielding coating of the discharge tube shown in FIG. 5, FIG. 5 is a sectional view taken along line VV in FIG. 2, and FIG.
FIG. 7 is a sectional view taken along line VI-VI in FIG. 7, FIG. 7 is a sectional view taken along line VII-VII in FIG. 2, FIG. 8 is a perspective view showing the insulator assembly of the device of the present invention in a divided manner, and FIG. Sectional view showing the insulator assembly, FIG. 10 is a plan view showing the insulator assembly, FIG. 11 is a plan view showing the fixer plate assembly of the device of the present invention, FIG. 12 is a front view showing the fixer plate assembly, Figure 13 shows XI in Figure 10.
An enlarged sectional view taken along line II-XIII, FIG. 1 is a front view showing the first terminal, FIG. 15 is a plan view showing the third terminal, and FIG. 16 is a bottom view showing the third terminal. FIG. 17 is a plan view showing a state where the inner unit is assembled to the fixer plate assembly, and FIG. 18 is a front view showing a state where the inner plate is assembled with the fixer plate assembly and the insulator assembly.
FIG. 19 is an enlarged front view showing an essential part of FIG. 18, FIG. 20 is a sectional view showing an essential part of a structure for supplying power to a discharge tube, and FIG. 21 is a state in which the device of the present invention is assembled in a meter case. It is sectional drawing which shows the principal part. 1 ... Pointer assembly that forms a self-luminous pointer, 100 ... Discharge tube, 101 ... Bulb that forms a light emitting portion, Power receiving portion that forms first and second electrodes, 110 ... Pointer boss that forms a pointer fixing means, 111
…… Legs that form the insertion part, 112 …… Valve holding parts, 130,140…
... First and second power supply terminals forming the first and second terminals, 13
1,141 ...... Connecting part, 131a, 141a ...... Pressing part, 134,144 ...... Clamping part that forms a contact part, 200 ...... Insulator assembly, 210 ...
… Rotating plate, 220 …… first hairspring, 230 ……
The first pin forming the first insertion member, 240 ... the second hair spring, 250 ... the second pin forming the second insertion member, 32
0,330 ... First and second terminals that form the first and second power supply terminals, 340 ... Third terminal, 400 ... Internal unit that forms the pointer drive device, 430 ... Meter shaft.

Claims (5)

[Claims] 1. A pointer drive device (400) for rotating a meter shaft (430) according to an input signal, and an insertion section (11) inserted into the meter shaft of the pointer drive device.
1), a light emitting portion (101) fixed to the insertion portion to form a light emitting region in the longitudinal direction, first and second electrodes (106, 107) for supplying a current to the light emitting portion, and First
First terminal (130) made of metal having a contact portion (134) for contacting the electrode of (1) and a connecting portion (131) extending in the axial direction of the meter shaft, and a contact portion (144) for contacting the second electrode. And a connecting portion (1
A self-luminous indicator (1) provided with a metallic second terminal (140) having a terminal (41), extending in the axial direction of the meter shaft, inserted into the connecting portion of the first terminal, and the meter. A metal first insertion member (230) fixed to the shaft, and a metal fixed to the meter shaft while extending in the axial direction of the meter shaft and inserted into the connection portion of the second terminal. A second insertion member (250) made of metal, a first spiral-shaped metal spring (220) whose one end side is connected to the first insertion member, and one end side which is connected to the second insertion member A second spiral-shaped metal spring (240) and first and second springs (240) connected to the other ends of the first and second springs, respectively, for supplying electric current to the first and second springs. An instrument device for a vehicle having two power supply terminals (320, 330) and. 2. The first and second insertion members are formed in a rod shape, and the connection portions of the first and second terminals are the first and second connection members.
The vehicle instrument device according to claim 1, further comprising a pressing portion (131a, 141a) for pressing the second insertion member. 3. The vehicle instrument according to claim 2, wherein the first and second insertion members are fixed to a plate-shaped rotating plate (210) fixed to the meter shaft. apparatus. 4. The first spring is arranged on one end surface side of the rotating plate, and the second spring is arranged on the other end surface side of the rotating plate. Vehicle instrument system. 5. The first and second power supply terminals are the first and second power supply terminals.
Located at approximately the same height as the other end of the spring,
The vehicle instrument device according to claim 4, wherein the second spring is caulked and connected to the other end side (223, 333) of the second spring.