JP2001059748A - Mounting structure of measuring unit in measuring instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mounting structure of a measuring unit in a measuring instrument which suppresses the man-hour required for mounting and hence the cost from rising. SOLUTION: The mounting structure is as follows. A combination meter to be a measuring instrument for vehicles comprises a speedometer 4a to be an indicator and a printer board 36. The speedometer 4a comprises a dial 6e, a light guide plate 5a, a movement 7a, a pointer 12a, etc., the guide plate 5a and the movement 7a are mutually fixed through a first fixture 21, and the light guide plate 5a and the printed board 36 are mutually fixed by mutually engaged second fixtures 24 and engaging-receiving parts 60.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an instrument device mounted on a moving body such as a vehicle or a ship, and more particularly to an instrument unit for rotating a pointer according to a measured amount, a printed circuit board on which a mounted product and the like are mounted, and To fix the instrument units of the instrument device to each other.

[0002]

2. Description of the Related Art A mobile device such as a vehicle or a ship is equipped with an instrument device for displaying a plurality of pieces of information measured by various measurement units to a driver of the mobile device.

[0003] As this type of instrument device, for example, a speedometer as a display instrument for displaying the speed of a vehicle as a moving body, a tachometer as a display instrument for displaying the number of revolutions of an engine, and a display of the remaining amount of fuel. A combination meter for a vehicle including a fuel gauge as a display instrument to perform the measurement and a temperature gauge as a display instrument to display the temperature of the cooling water of the engine is used.

[0004] The display instrument of the above-described vehicle combination meter includes a movement as an instrument unit, a dial, a pointer, a light guide plate, and the like. The movement is connected to the aforementioned measurement unit mounted on the vehicle.

[0005] The movement includes an output shaft that rotates according to the measurement amount of the measurement unit, a shield case formed in a man-made cylindrical shape, a coil bobbin housed in the shield case, and the like. In the coil bobbin,
A pair of flanges extending outward from the shield case are integrally formed. A plurality of through holes are formed in each flange.

The movement includes a printed circuit board housed in an instrument case or the like forming an outer shell of a vehicle combination meter, and a terminal pin formed in a coil spring shape by spirally winding a conductive thin metal wire. It is electrically connected via such as. Through holes are formed in the printed circuit board at positions corresponding to the through holes.

In addition, the movement includes a bolt having a front end protruding from the one surface side of the printed board through the through hole of the flange and the through hole of the printed board to the other surface side of the printed board. It is fixed and attached to a predetermined position on the printed circuit board by a nut or the like screwed to the tip of the bolt.

[0008]

In the above-mentioned conventional vehicle combination meter, a bolt is inserted into each of the plurality of through holes, and a nut is screwed into a tip portion of the bolt to thereby attach the movement to the printed circuit board. I've been fixed.

As described above, when fixing the movement to the printed circuit board, the operator positions the through-hole of the flange and the through-hole of the printed circuit board so as to face each other, and changes this positioned state. There is a need to hold. Further, in order to fix the movement, it is necessary to pass a bolt through each of the plurality of formed through holes and screw it into a nut.

For this reason, it takes time and effort to mount the movement on a printed circuit board, and the number of steps for mounting the movement on the printed circuit board has tended to increase. In addition, the number of parts, such as the need for bolts during assembly, has been increasing. The cost of the vehicle combination meter itself as an instrument device has tended to rise.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a mounting structure of a meter unit of a meter device which can suppress man-hours required for mounting and suppress an increase in cost.

[0012]

In order to solve the above-mentioned problems and to achieve the object, the instrument unit mounting structure for a meter device according to the present invention according to the first aspect has an output for rotating a pointer according to a measured amount. Instrument unit having a shaft, a printed circuit board on which a mounted product is mounted, a dial having a display portion, and guiding light incident from a light source to at least one of the display portion of the dial and the pointer. A light guide plate that illuminates, in a meter device, a structure for attaching the meter unit to the printed circuit board, wherein the light guide plate is a flat flat portion disposed on the front side of the meter unit, A first fixing portion that sandwiches the instrument unit between the flat portion and a second fixing portion that extends from the flat portion toward the printed circuit board; Solid Parts is comprising the latch receiving portion for locking.

According to a second aspect of the present invention, there is provided an instrument unit mounting structure for an instrument unit according to the first aspect, wherein the instrument unit includes a flange for abutting the light guide plate on the instrument unit. A plurality of first arm portions in which the first fixing portion protrudes toward the printed circuit board from the flat portion, and the first arm portions approach each other from a tip end of each of the first arm portions. A first hook portion protruding in the direction, the first hook portion and the peripheral edge of the meter unit are brought into contact with each other, and the first hook portion is press-fitted to the outer peripheral side of the meter unit to form the first hook portion. The light guide plate and the instrument unit are fixed to each other by being locked to the bottom surface and maintaining a state in which the first hook portion is locked to the bottom surface of the flange.

According to a third aspect of the present invention, there is provided an instrument unit mounting structure for an instrument unit according to the second aspect of the present invention, wherein the first fixing portion has a first mounting portion.
The arm units are arranged at positions facing each other with the instrument unit interposed therebetween.

According to a fourth aspect of the present invention, in the mounting structure for an instrument unit of the instrument device according to the first aspect, the first fixing portion may include:
The flat part is provided with a slide protrusion formed along the flat part with an interval therebetween, and guiding the instrument unit from the side of the light guide plate to the rear side of the flat part along the slide protrusion. The light guide plate and the instrument unit are fixed to each other by being sandwiched between the flat portion and the slide projection.

According to a fifth aspect of the present invention, in the instrument unit mounting structure for a meter device according to any one of the first to fourth aspects of the present invention, the first and second instrument units are connected to each other. A plurality of second arm portions protruding from the flat portion toward the printed circuit board; and a plurality of second arm portions protruding from a tip end of each of the second arm portions in a direction approaching each other. A second hook portion,
The locking receiving portion includes a slit that penetrates the printed circuit board and is disposed at a position facing and corresponding to each of the arm portions. The second hook portion and a peripheral edge of the slit are brought into contact with each other. The light guide plate and the printed circuit board are fixed to each other by press-fitting the two hooks into the slit to lock the slit, and maintaining the state where the second hook is locked to the slit. And

According to a sixth aspect of the present invention, in the instrument unit mounting structure for an instrument unit according to the fifth aspect, the second arm portion of the second fixing portion is provided. , Are arranged at positions facing each other with the instrument unit interposed therebetween.

According to a seventh aspect of the present invention, in the instrument unit mounting structure of the instrument device according to the fifth or sixth aspect, the locking receiving portion is provided with the following. When the second fixing portion is locked, the second
It is characterized by comprising a holding piece for sandwiching a hook between the printed board and the hook.

According to an eighth aspect of the present invention, there is provided the instrument unit mounting structure of the instrument device according to the seventh aspect, wherein the holding piece has elasticity and the An elastic restoring force which is formed integrally with the printed circuit board and abuts against the hook when the second hook is pressed into the slit and presses the hook in the direction toward the printed circuit board. It is characterized by occurrence.

According to a ninth aspect of the present invention, in the instrument unit mounting structure for an instrument unit according to any one of the first to eighth aspects of the present invention, there is provided the instrument unit mounting structure for an instrument unit according to the first aspect. The light plate includes a locking portion protruding from the flat portion toward the dial, the dial includes a locking receiving portion for locking the locking portion, and the locking portion and the locking receiving portion are connected to each other. The character plate and the light guide plate are fixed to each other by being locked.

According to the first aspect of the present invention, the light guide plate includes a first fixing portion that sandwiches the instrument unit together with the flat portion, and a second fixing portion that extends toward the printed board. There is provided a lock receiving portion for locking the second fixing portion. A first fixing part fixes the light guide plate and the instrument unit to each other. Further, the light guide plate and the printed circuit board are fixed by locking the second fixing portion and the lock receiving portion to each other. Therefore, the instrument unit and the printed circuit board are fixed to each other.

Therefore, it is not necessary to use a bolt or the like when fixing the instrument unit, and the instrument unit and the printed circuit board are positioned with respect to each other so that the bolt passes through a desired hole. There is no need to maintain the state.

According to a second aspect of the present invention, the first fixing portion has a plurality of first arms and a first arm protruding from a distal end of each of the first arms in a direction in which the first arms approach each other. And a hook. The instrument unit and the light guide plate are fixed to each other by press-fitting the first hook into the outer peripheral side of the instrument unit. As described above, the instrument unit can be fixed only by press-fitting the first hook into the outer peripheral side of the instrument unit.

According to the third aspect of the present invention, since the first arm portions are provided at positions opposing each other with the instrument unit interposed therebetween, the first hook portion is pressed into the outer peripheral side of the instrument unit. Then, the light guide plate and the instrument unit can be more reliably fixed.

According to a fourth aspect of the present invention, the first fixing portion guides the instrument unit from the side to the rear side of the flat portion along the slide protrusion, and sandwiches the instrument unit between the flat portion and the slide protrusion. Fix it. Thus, by sliding the instrument unit from the side of the light guide plate to the back side of the light guide plate, the light guide plate and the instrument unit can be fixed to each other.

According to a fifth aspect of the present invention, the second fixing portion has a plurality of second arms and a second arm protruding from a tip end of each of the second arms in a direction in which the second arms approach each other. And a hook. The locking receiving portion has a slit penetrating the printed circuit board. The second hook is engaged with the slit by press-fitting the second hook into the slit. Thus, the light guide plate can be fixed to the printed board only by press-fitting the second hook into the slit.

According to the sixth aspect of the present invention, since the second arm portions are provided at positions facing each other with the instrument unit interposed therebetween, when the second hook portion is engaged with the slit, the second arm portion is guided. The light plate can be securely fixed by the printed circuit board.

According to a seventh aspect of the present invention, when the lock receiving portion locks the second hook portion to the slit, the second hook portion is sandwiched between the printed circuit board and fixed. It has a piece. For this reason, after the light guide plate is fixed to the printed board, the light guide plate can be more securely fixed to the printed board without rattling.

According to the present invention, the holding piece generates an elastic restoring force in a direction of pressing the hook toward the printed circuit board when the hook engages with the slit. For this reason, after the light guide plate is fixed to the printed board, the light guide plate does not rattle further, and the light guide plate can be more securely fixed to the printed board.

According to a ninth aspect of the present invention, the light guide plate includes a locking portion protruding toward the dial, and the dial includes a locking receiving portion for locking the locking portion. The dial and the light guide plate are fixed to each other by locking the stopping portion and the locking receiving portion to each other. Therefore, it is not necessary to use a screw or the like when fixing the dial to the light guide plate, and it is possible to prevent a screw head or the like from being exposed on the front side of the dial, that is, on the driving side.

[0031]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. Due to the mounting structure 55 according to the first embodiment of the present invention shown in FIG.
A speedometer 4a (shown in FIG. 1 and the like) as a display instrument attached to and fixed to 6 constitutes a vehicle combination meter 1 as an instrument device shown in FIG. 6 and the like.

The vehicle combination meter 1 shown in FIG. 6 is a device that is mounted on a moving body such as a vehicle and displays various information to a driver of the moving body. As shown in FIG. 6, the vehicle combination meter 1 includes a casing 9 as an instrument case, a dial 6, a return plate 10, a transparent cover 11, and the like.

The casing 9 comprises the back case 2 and the front case 3
And The back case 2 is formed in a box shape having an opening 2a facing the driver. Back case 2
A plurality of receiving grooves 2c, into which a later-described locking claw 10e of the return plate 10 can be inserted and locked, are formed in the outer edge 2b forming the opening 2a. Further, on the outer edge 2b,
The transparent cover 11 has a plurality of receiving grooves 2d into which locking claws 11e described later can be inserted and locked.

The front case 3 is formed in a plate shape, and is disposed in the back case 2 through the opening 2a of the back case 2. The front case 3 includes a dial 6e for a speedometer described later of the dial 6, a dial 6f for a tachometer,
Windows 3e, 3f, 3g, and 3h are formed to support the gauge dial 6g and the display dial 6h, respectively.

The windows 3e, 3f, 3g, 3h are formed through the front case 3, respectively, and communicate the inside and the outside of the cases 2, 3 with each other. Windows 3e, 3
f, 3g, 3h are the dials 6e, 6
f, 6g, and 6h.

With the front case 3 housed in the back case 2, a relatively hard printed board 3 made of glass epoxy resin or the like is interposed between the cases 3 and 2.
6 are provided. On the printed circuit board 36, a plurality of light sources 37, a pressing switch 38, a plurality of coil spring-like terminal pins 39, a liquid crystal display panel 40, and the like are mounted. The light source 37, the switch 38, and the liquid crystal display panel 40 each constitute a mounted product described in this specification.

The terminal pins 39 are fixed to the printed circuit board 36 by brazing with solder 43, as shown in FIG. The terminal pins 39 supply drive power to the respective movements 7a, 7b, 7c, 7d described later.

The liquid crystal display panel 40 displays the traveling distance of the vehicle (at least one of the traveling distance indicated by the odd display and the traveling distance indicated by the trip display). The liquid crystal display panel 40 is exposed to the driver via a mileage display window 6j described later of the speedometer dial 6e.

With the above configuration, cases 2 and 3
The light source 37 and the movements 7a, 7b, 7c, 7d and the like are housed inside.

The dial 6 includes a dial 6e for a speedometer for displaying the speed of the vehicle, a dial 6f for a tachometer for displaying the number of revolutions of the engine, a remaining amount of fuel and a coolant for the engine. A gauge dial 6g for displaying a temperature and a display dial 6h for displaying a shift position and various warnings are provided.

The dial 6e for the speedometer and the dial 6f for the tachometer are each formed in a substantially circular shape.
At substantially the center, through holes 13 through which output shafts 8a and 8b, which will be described later, of the movements 7a and 7b are respectively formed are formed.

The speedometer dial 6e is provided with a vehicle speed display scale 6a for displaying the running speed of the vehicle on a surface facing the driver. A travel distance display window 6j is formed at the lower end of the speedometer dial 6e. The mileage display window 6j penetrates the speedometer dial 6e. On the tachometer dial 6f,
An engine speed display scale 6b for displaying the engine speed of the vehicle is formed on a surface facing the driver.

The gauge dial 6g is formed in an elliptical shape whose longitudinal direction is formed along the width direction of the vehicle combination meter 1. At both ends along the longitudinal direction of the cage dial 6g, through holes 13 through which output shafts 8c, 8d of the movements 7c, 7d, which will be described later, can pass.
Are formed respectively.

On the gauge dial 6g, a scale 6c for displaying the remaining fuel level of the vehicle and a temperature of the cooling water of the engine of the vehicle are displayed on the surface facing the driver. And a cooling water temperature display scale 6d are formed. The above-mentioned scales 6a, 6b, 6c, 6d are display units described in this specification.

The display dial 6h is formed in a rectangular shape whose longitudinal direction extends along the vertical direction of the vehicle combination meter 1. The display dial 6h has a display unit 6 including various characters for displaying a shift position and various warnings on a surface facing the driver.
k is formed.

The dials 6e, 6f, 6g, 6h are respectively arranged on the driver side of the front case 3 and attached to the front case 3 so as to cover the windows 3e, 3f, 3g, 3h of the front case 3. . The dials 6e, 6f, 6g, 6h are supported by the edges of the windows 3e, 3f, 3g, 3h, respectively.

The dial 10 is arranged on the driver's side of the dial 6, that is, on the front side, and is attached to the outer edge 2 b forming the opening 2 a of the back case 2. The dial 10 is a speedometer exposure window 10 for exposing the dials 6e, 6f, 6g, 6h to the driver.
a, a tachometer exposure window 10b, and a gauge exposure window 10c
And a display unit exposure window 10h.

The return plate 10 has a locking claw 10e extending from the outer edge toward the back case 2. The locking claw 10e is inserted into the receiving groove 2c of the back case 2 and locked. When the locking claw 10e is locked in the receiving groove 2c, the dial 10 has the graduations 6a, 6
Unnecessary parts other than b, 6c, 6d and the display part 6k are shielded from the driver.

The transparent cover 11 is formed in a plate shape and is made of a transparent resin or the like. The transparent cover 11 is disposed on the driver side, that is, on the front side of the dial plate 10. The transparent cover 11 has a locking claw 11e formed to extend from the outer edge toward the back case 2. The locking claw 11e is inserted into the receiving groove 2d of the back case 2 and locked.

When the locking claw 11e is locked in the receiving groove 2d, the transparent cover 11 closes the opening 2a. The transparent cover 11 is provided with scales 6a, 6b, 6 of the dial 6.
c, 6d, the display unit 6k, and the return plate 10 so as to prevent dust and the like from entering the vehicle combination meter 1.

A rod-like trip bar 42 is connected to the switch 37 mounted on the printed circuit board 36. The trip bar 42 has a facing 10 and a transparent cover 1.
1 and protrudes toward the driver side.

When the trip bar 42 is depressed by the driver, the travel distance displayed on the liquid crystal display panel 40 is switched via the switch 38 between the travel distance by the odd display and the travel distance by the trip display. Reset the mileage displayed.

The vehicle combination meter 1 includes a speed meter 4a for displaying the speed of the vehicle as a display instrument, a tachometer 4b for displaying the number of revolutions of the engine, and a fuel gauge for displaying the remaining amount of fuel. It has a gauge 4c and a temperature gauge 4d for displaying the temperature of the cooling water of the engine.

These speedometer 4a, tachometer 4b, fuel gauge 4c and temperature gauge 4c
d is a movement 7 as an instrument unit, respectively.
a, 7b, 7c, 7d and hands 12a, 12b, 12
c, 12d, the dials 6e, 6f, 6g, and the light guide plates 5a, 5b, 5c, 5d, and the like.

The movements 7a, 7b, 7c, 7d are:
Vehicle speed detecting means (not shown) mounted on the vehicle,
It is connected to engine speed detecting means, fuel remaining amount detecting means, cooling water temperature detecting means, and the like. Movement 7a,
Reference numerals 7b, 7c, 7d denote output shafts 8a, 8b, 8, respectively, which rotate according to the measurement amounts detected by these detection means.
c, 8d.

The pointers 12a, 12b, 12c and 12d are:
The movements 7a, 7b, 7c, 7d are arranged so as to rotate integrally with the respective output shafts 8a, 8b, 8c, 8d. Pointers 12a, 12b, 12c,
12d is a scale 6 attached to the dials 6e, 6f, 6g.
The measured amount is displayed in cooperation with a, 6b, 6c, 6d, and the like.

The light guide plates 5a, 5b, 5c, 5d are provided on the back side of the corresponding dials 6e, 6f, 6g. The light guide plates 5a, 5b, 5c and 5d respectively transmit the light emitted from the light source 37 to the hands 12a, 12b and 12d.
c, 12d, these pointers 12a, 12b,
12c and 12d are made to shine.

The above-described meters 4a, 4b and gauge 4
Since c and 4d have substantially the same configuration, the movements 7a, 7b, 7c and 7d and the hands 12a and 12d are representative of the speedometer 4a (shown in FIG. 1).
Detailed configurations of b, 12c, 12d, dials 6e, 6f, 6g and light guide plates 5a, 5b, 5c, 5d will be described.

The movement 7a is a so-called cross-coil type instrument having two coils wound orthogonally to each other. As shown in FIGS. 1 and 2, the movement 7 a includes a shield case 14 formed in a bottomed cylindrical shape, and a coil bobbin 15 housed in the shield case 14. The shield case 14 is arranged with the bottom surface 14 a facing the printed circuit board 36.

The coil bobbin 15 has two coils 16
The conductor is wound so that a and 16b are orthogonal to each other. On the coil bobbin 15, an output shaft 8a attached to the center of a disk-shaped magnet rotor (not shown) is rotatably arranged. A pointer 12a is attached to the output shaft 8a. A return zero spiral spring (not shown) for returning the pointer 12a to the zero position when no voltage is applied to the coils 16a and 16b formed by the conductors is attached to the output shaft 8a.

The coil bobbin 15 has a pair of flanges 1 extending outward from the shield case 14.
7 are integrally formed. The flanges 17 are arranged at positions symmetrical with each other through the center of the coil bobbin 15. Each of the flanges 17 is formed with a pair of terminal receiving portions 18 extending along the axial direction of the shield case 14. The terminal receiving portion 18 is provided with the flange 17.
Is formed in a tubular shape extending toward the printed circuit board 36.

A terminal pin 39 can be engaged with each terminal receiving portion 18 from its end face. In the terminal receiving portions 18, terminal members (not shown) made of a conductive material along the axial direction of the shield case 14 are provided. The base of each terminal member protruding from the end face of the flange 17 is bent in a substantially L-shape and extends toward the inside of the shield case 14.

The two ends of each of the two coils 16a and 16b wound crosswise around the coil bobbin 15 are connected to the bases of a total of four terminal members, two for each flange 17 respectively. .

With the above-described configuration, the movement 7a
Are housed in the cases 2 and 3 with the terminal pins 39 engaged with the terminal receiving portions 18. When the terminal pin 39 is engaged in the terminal receiving portion 18, the terminal pin 39 and the two coils 16a and 16b are electrically connected to each other. The movement 7a is connected to the coil 16 via the terminal pin 39.
a, 16b to rotate the output shaft 8a.

As shown in FIGS. 1 to 3, the light guide plate 5a is made of a known light guide material and has a relatively high rigidity. The light guide plate 5a has a flat flat portion 20 on which the dial plate 6e is overlapped, and a first flat portion 20a. And a second fixing portion 24 and the like. In the flat part 20, a through hole 22 through which the output shaft 8a can pass and a liquid crystal display panel exposure window 23 through which the liquid crystal display panel 40 can pass are formed.

The first fixing portion 21 includes a plurality of first arm portions 56 protruding from the flat portion 20 toward the printed circuit board 36, and the first arm portions 56 extending from the distal ends of the respective first arm portions 56. And a first hook portion 57 protruding toward the direction in which the first hooks 56 approach each other.

As shown in FIG. 2 and the like, the first arm portions 56 are arranged at positions facing each other with the movement 7a interposed therebetween. As shown in FIGS. 2 and 3, the first hook 57 is locked to the bottom surface 17a of the flange 17 of the movement 7a. The first hook 57 is provided with the flange 17.
When it is locked to the bottom surface 17a, the movement 7a is pressed toward the flat portion 20. The first hook 57 is provided on the flange 1
7, the movement 7a is sandwiched between the flat portion 20 and the bottom surface 17a of the movement 7.

With the above-described configuration, the first fixing portion 21
Makes the first hooks 57 abut against the periphery of the flange 17, that is, the periphery of the movement 7 a, press-fits the first hooks 57 to the outer periphery of the movement 7 a, and locks them on the bottom surface 17 a of the flange 17; The movement 7a and the light guide plate 5a are fixed to each other by maintaining the state where the first hook 57 is locked to the bottom surface 17a of the flange 17. At this time, the flange 17 is attached to the light guide plate 5.
Contact with a.

The second fixing portion 24 includes a plurality of second arm portions 58 protruding from the flat portion 20 toward the printed circuit board 36, and the second arm portions 58 extending from the tip of each of the second arm portions 58. A second hook portion 59 protruding toward the direction in which each of them 58 approaches each other.

As shown in FIG. 2, etc., the second arm portions 58 are arranged at positions facing each other with the movement 7a interposed therebetween. As shown in FIGS. 2 and 3, the second hook 59 passes through a slit 41 of the printed circuit board 36, which will be described later, and is locked to the slit 41. At this time, the second hook portion 59 is exposed on the side of the printed board 36 opposite to the side where the movement 7a is arranged, and is in contact with the surface of the printed board 36 located on the opposite side.

The second fixing portion 24 makes each of the second hook portions 59 abut on the peripheral edge of the slit 41, and
9 is pressed into the slit 41 and locked, and the second hook 59
The light guide plate 5a and the printed circuit board 36 are fixed to each other by maintaining a state in which the light guide plate 5a is engaged with the slit 41.

Further, as shown in FIG. 1 and the like, the lock receiving portion 6 is provided near the terminal pin 39 on the printed circuit board 36.
0 is provided. 2 and FIG.
As shown in the figures, a slit 41 and a holding piece 61 are provided. The slits 41 are provided near each of the terminal pins 39. Each slit 41 is formed so as to penetrate the printed circuit board 36, and is arranged at a position facing the second hook 59 of the second fixing portion 24.

The holding pieces 61 are provided in the vicinity of the respective slits 41 and on the side opposite to the side on which the movement 7a and the like of the printed board 36 are arranged. Nipping piece 61
Are formed integrally with the printed circuit board 36 with elasticity.

As shown in FIG. 5 (A) and the like, the holding piece 61 is provided at a position visible from the movement 7a side through the slit 41, and the slit 41 is opposite to the side where the movement 7a is arranged. It is formed so as to cover from the side.

When the second hook 59 is locked in the slit 41, the holding piece 61 comes into contact with the second hook 59 as shown in FIG. Generates an elastic restoring force along. The holding piece 61 connects the second hook 59 to the printed circuit board 3.
Press toward 6. Due to the elastic restoring force of the holding piece 61, the second hook portion 61 is sandwiched between the holding piece 61 and the printed circuit board 36 as shown in FIG.

The first fixing portion 21, the second fixing portion 24, and the lock receiving portion 60 constitute a mounting structure 55 for the printed circuit board 36 described in this specification.

The light guide plate 5a transmits the light emitted from the light source 37 to the pointer 12 attached to the output shaft 8a of the movement 7a.
It has a function of guiding the indicator 51 to a later-described indicator 51 and causing the indicator 51 to shine. The dial 6e is a light guide plate 5
a is arranged on the driver side of FIG.

The light guide plate 5a and the dial 6e are fixed to each other by a mounting structure 25 shown in FIG. The mounting structure 25 shown in FIG. 4 and the like includes a positioning projection 27 and a locking portion 28 provided on the light guide plate 5a, the above-described through hole 13 provided on the dial 6e, and a slit 2 serving as a locking receiving portion.
6 is provided.

The positioning projection 27 and the locking portion 28 are formed so as to protrude from the flat portion 20 toward the dial 6e. The positioning projection 27 is formed to protrude from the surface of the flat portion 20 on which the dial 6e is overlapped toward the dial. The positioning protrusion 27 is arranged coaxially with the through hole 22. The positioning protrusion 27 is attached to the dial 6e.
Into the through-hole 13 of the main body.

The locking portion 28 has a plurality of arms 29 provided in the vicinity of the through hole 22 and hooks 30 provided at the tip of each arm 29. Each of the arm portions 29 is formed to extend from the flat portion 20 toward the dial 6e. The arm portions 29 are provided at the peripheral edge of the positioning protrusion 27 and at positions facing each other with the center of the through hole 22 interposed therebetween.

The hooks 30 are formed to protrude from the distal ends of the arms 29 in directions away from each other.
That is, the hooks 30 are formed so as to protrude toward the outer peripheral direction of the through hole 22 from the distal end of each arm 29.

The slits 26 are formed on the periphery of the through hole 13, respectively. The slits 26 are arranged at positions facing the arm 29 when the dial 6e is overlaid on the light guide plate 5a. The slit 26 is formed through the dial 6e, and in the illustrated example, communicates with the through-hole 13.

The pointer 12a has a base 50 and an indicator 51. The base 50 is attached to the output shaft 8a. The pointing portion 51 is formed in a weight shape extending in one direction from the base 50. In the pointer 12a, at least the indicator 51 is made of a known light guide material.

The speedometer 4a as a display instrument includes a scale light guide plate (not shown) for illuminating the scale 6a and the like of the dial 6e. The scale light guide plate is provided on the back side of the dial 6e, and guides the light emitted from the light source 41 to the scale 6a of the dial 6e to shine the scale 6a.

According to the configuration described above, when assembling the speedometer 4a as a display instrument, first, the first hook portion 57 of the first fixing portion 21 is pressed into the outer peripheral side of the movement 7a, and The light guide plate 5a and the movement 7a are fixed to each other by being locked to the bottom surface 17a.

At this time, the movement 7a is sandwiched and fixed by the first hook portion 57 and the flat portion 20. Therefore, the movement 7a and the light guide plate 5a are prevented from rattling with each other after being fixed.

Then, the terminal receiving portion 1 of the movement 7a
8 is engaged with the terminal pins 39 fixed to the printed circuit board 36 by solder 43 or the like.
The second hook portion 59 of the fixing portion 24 is press-fitted against the elastic restoring force of the holding piece 61 and is locked by the slit 41, and the movement 7a and the light guide plate 5a are attached to the printed board 36.

At this time, the light guide plate 5 a is fixed to the printed circuit board 36 with the second hook portion 59 being sandwiched between the holding piece 61 and the printed circuit board 36. The movement 7a is fixed in a state where the above-described electrical connection between the terminal pin 39 and the coils 16a and 16b is maintained, and the output shaft 8a of the movement 7a passes through the through hole 22. Has become. Thus, the printed circuit board 36, the movement 7a, and the light guide plate 5a are fixed to each other.

The positioning projection 27 of the light guide plate 5a is
e, and the engaging portion 28 is locked in the slit 26. Hook 30 in slit 26
Is locked, and the dial 6e and the light guide plate 5a are fixed to each other. At this time, the output shaft 8a passes through the through hole 22 of the dial 6e, and is in a state of protruding from the dial 6e toward the driver.

Thus, the dial 6e is fixed to the light guide plate 5a. The base 50 of the pointer 12a of the output shaft 6e protruding from the through hole 22 of the dial 6e toward the driver is attached.
The pointer 12a rotates with the output shaft 8a of the movement 7a, and is applied to the coils 16a and 16b via the terminal pins 39 and the like, whereby the pointer 12a
Indicates the scale 6a according to the measured amount, and the measured amount is displayed to the driver.

According to the mounting structure 55 of the movement 7a of the present embodiment, the first hook 57
a, the first fixed portion 21 fixes the light guide plate 5a and the movement 7a to each other, and the second hook portion 59 The second fixing portion 24 and the lock receiving portion 60 fix the light guide plate 5a and the printed board 36 to each other while being held between the printed board 36 and the slit 41.

Therefore, it is not necessary to use a bolt or the like when fixing the movement 7a, and the movement 7a and the printed circuit board 36 are positioned with respect to each other so that the bolt passes through a desired hole. It is not necessary to maintain the state.

Therefore, it is possible to reduce the time and effort required for fixing the movement 7a, thereby reducing the number of assembly steps of the vehicle combination meter 1 and the number of parts. It is possible to suppress a rise in the cost of the vehicle combination meter 1.

Further, the first fixing portion 21 is provided with the first hook 57
Is pressed into the outer periphery of the movement 7a to fix the movement 7a and the light guide plate 5a to each other. For this reason, the time and effort required for fixing the movement 7a can be reliably suppressed, the number of assembling steps of the vehicle combination meter 1 can be reliably reduced, and the cost increase of the vehicle combination meter 1 can be reliably suppressed.

Further, since the first arm portions 56 of the first fixing portion 21 are provided at positions opposing each other with the movement 7a interposed therebetween,
Can be reliably fixed to the movement 7a and the light guide plate 5a.

The light guide plate 5 a can be fixed to the printed circuit board 36 simply by press-fitting the second hook portion 59 into the slit 41 by the second fixing portion 24. Therefore, the number of assembling steps of the vehicle combination meter 1 can be reliably suppressed, and the cost increase of the vehicle combination meter 1 can be reliably suppressed.

Further, since the second arm portions 58 of the second fixing portion 24 are provided at positions facing each other with the movement 7a interposed therebetween, the second fixing portion 24
The light guide plate 5a and the printed board 36 can be securely fixed.

When the second hook portion 59 is engaged with the slit 41 by the holding piece 61, the second hook portion 59 is sandwiched between the printed board 36 and the second hook portion 59. Therefore, the light guide plate 5a is securely fixed to the printed board 36 without rattling. Therefore, the movement 7a can be reliably fixed to the printed circuit board 36.

Further, the dial 6a and the light guide plate 5a are fixed by the locking of the locking portion 25 and the locking receiving portion 26. Therefore, it is not necessary to use screws or the like when fixing the dial 6a to the light guide plate 5a,
A screw head or the like is not exposed on the front side of the dial 6a, that is, on the driving side.

Further, since the dial 6a and the light guide plate 5a can be fixed to each other by locking the locking portion 25 and the locking receiving portion 26 to each other, the number of assembling steps of the vehicle combination meter 1 is further reduced. can do.

Next, a second embodiment of the present invention will be described with reference to FIGS. The same components as those in the first embodiment described above are denoted by the same reference numerals, and description thereof is omitted.

The first fixing portion 21 of the mounting structure 55 of the movement 7a according to the present embodiment has a slide projection 71 as shown in FIG. The slide protrusion 71 is spaced apart from the flat portion 20 by the second hook portion 59 from the flat portion 20.
It is arranged on the side.

The slide projection 71 is arranged along the flat portion 20, and fixes the movement 7a to the light guide plate 5a by sandwiching the flange 17 and the like between the flat protrusion 20 and the slide protrusion 71.
The slide projection 71 is provided between the flat portion 20 and the flange 17.
Is sandwiched, the movement 7a is sandwiched.

According to the structure of the first fixing portion 21 of this embodiment, the movement 7a is moved from the side of the light guide plate 5a.
The guide is guided to the rear side of the flat portion 20 so as to be located between the flat portion 20 and the slide protrusion 71 along the arrow S1 in FIG. Then, after sandwiching the flange 17 between the flat portion 20 and the slide protrusion 71,
The second hook 59 is slit 41 along the arrow S2 in FIG.
To fix the light guide plate 5a and the movement 7a to each other as shown in FIG.

According to the mounting structure 55 of the movement 7a of the present embodiment, the first fixing portion 21 is connected to the movement 7a
Is slid from the side of the light guide plate 5a to the back side of the light guide plate 5a, whereby the light guide plate 5a and the movement 7 are moved.
are fixed to each other, the time and effort required for fixing the movement 7a can be further reduced, the assembly man-hour of the vehicle combination meter 1 can be further reduced, and the cost of the vehicle combination meter 1 can be reduced. Soaring can be further suppressed.

Also, in the mounting structure 55 of the movement 7a of the present embodiment, similarly to the first embodiment described above, the bottom surface 17a of the slide projection 71 flange 17 is supported, and the movement 7a is connected to the flat portion 20. The first fixing portion 21 is sandwiched between the light guide plate 5a and the movement 7a.
Are fixed to each other, and the second hook portion 59 is sandwiched between the holding piece 61 and the printed circuit board 36 and locked in the slit 41, so that the second fixed portion 24 and the locking receiving portion 60 are connected. The light guide plate 5a and the printed circuit board 36 are fixed to each other.

Therefore, it is not necessary to use a bolt or the like when fixing the movement 7a, and the movement 7a and the printed circuit board 36 are positioned with respect to each other so that the bolt passes through a desired hole. It is not necessary to maintain the state.

Therefore, it is possible to reduce the time and effort required for fixing the movement 7a, thereby reducing the number of assembly steps of the vehicle combination meter 1 and the number of parts. This makes it possible to suppress an increase in the cost of the vehicle combination meter 1.

In the above-described first and second embodiments, the speedometer 4a is described as a representative display instrument. However, the tachometer 4b and the movements 7b, 7c, 7d of the gauges 4c, 4d are mounted on the printed circuit board 36. When fixing, the mounting structure 55 of the above-described embodiment can be used.

[0110]

As described above, according to the first aspect of the present invention, the first fixing portion supports the bottom surface of the instrument unit to fix the light guide plate and the instrument unit to each other. The light guide plate and the printed circuit board are fixed by locking the fixing portion and the lock receiving portion of each other. Then, the instrument unit and the printed circuit board are fixed to each other.

Therefore, it is not necessary to use a bolt or the like when fixing the instrument unit, and the instrument unit and the printed circuit board are positioned with respect to each other so that the bolt passes through a desired hole. There is no need to maintain state.

Therefore, it is possible to reduce the time and effort required for fixing the instrument unit, thereby reducing the number of assembling steps of the instrument device and the number of parts. It is possible to suppress a rise in cost.

According to the second aspect of the present invention, in addition to the effect of the first aspect, the instrument unit, the light guide plate and the light guide plate are simply inserted by press-fitting the first hook into the outer peripheral side of the shield case of the instrument unit. Can be fixed to each other. Therefore, it is possible to further reduce the time and effort required for fixing the instrument unit, to further reduce the number of assembling steps of the instrument device, and to further suppress a rise in the cost of the instrument device.

According to the third aspect of the present invention, in addition to the effect of the second aspect, the first arm portions are provided at positions opposing each other with the instrument unit interposed therebetween. When the hook is locked to the bottom surface of the shield case, the light guide plate and the instrument unit can be more securely fixed.

According to the fourth aspect of the present invention, the first fixing portion slides the instrument unit from the side of the light guide plate to the rear side of the light guide plate, so that the light guide plate and the instrument unit can be connected to each other. Can be fixed to each other. Therefore, it is possible to further reduce the time and effort required for fixing the instrument unit, to further reduce the number of assembling steps of the instrument device, and to further suppress a rise in the cost of the instrument device.

According to the fifth aspect of the present invention, the second hook portion is press-fitted into the slit, thereby forming the second hook.
Lock the hook into the slit. Thus, the light guide plate can be fixed to the printed board only by press-fitting the second hook into the slit. Further, the light guide plate and the meter unit are fixed to each other by the above-described first fixing portion.

Therefore, it is possible to further reduce the time and effort required for fixing the instrument unit, and to further reduce the number of assembling steps of the instrument device and the number of parts. It is possible to further suppress a rise in the cost of the instrument device.

According to the sixth aspect of the present invention, in addition to the effect of the fifth aspect, the second arm portions are provided at positions facing each other with the instrument unit interposed therebetween. When the hook is locked to the slit, the light guide plate can be securely fixed to the printed circuit board. Therefore, the instrument unit can be securely fixed to the printed circuit board.

According to the seventh aspect of the present invention, when the lock receiving portion locks the second hook portion to the slit, the second lock portion receives the second hook portion.
There is provided a holding piece for holding the hook portion between the printed circuit board and fixing it. For this reason, after the light guide plate is fixed to the printed board, the light guide plate can be more securely fixed to the printed board without rattling. Therefore, the instrument unit can be securely fixed to the printed circuit board.

According to the present invention, the holding piece generates an elastic restoring force in a direction of pressing the hook toward the printed circuit board when the hook engages with the slit. For this reason, after the light guide plate is fixed to the printed board, the light guide plate does not rattle further, and the light guide plate can be more securely fixed to the printed board. Therefore, the instrument unit can be securely fixed to the printed circuit board.

According to a ninth aspect of the present invention, in addition to the above-described effects, the light guide plate has a locking portion protruding toward the dial, and the dial plate is locked by the locking portion. The dial and the light guide plate are fixed to each other by locking the locking portion and the locking receiving portion to each other. Therefore, it is not necessary to use a screw or the like when fixing the dial to the light guide plate, and the head of the screw or the like is not exposed on the front side of the dial, that is, on the driving side.

Therefore, the beauty of the instrument device is not spoiled, and the number of parts and the number of assembling steps are suppressed, so that it is possible to further suppress the increase in the cost of the instrument case.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an exploded state of a speedometer provided with a movement mounting structure according to a first embodiment of the present invention.

FIG. 2 is a sectional view showing the speedometer of the embodiment.

1. FIG. 3 is a cross-sectional view showing a mounting structure of a movement of the speedometer shown in FIG.

FIG. 4 is a sectional view showing an attachment structure of a dial and a light guide plate of the speedometer shown in FIG. 2;

FIG. 5 is a schematic diagram showing a process in which a second hook of the second fixing portion of the embodiment locks in the slit.

FIG. 6 is an exploded perspective view showing a vehicle combination meter including a speedometer having the mounting structure of the embodiment.

FIG. 7 is a perspective view showing a movement having a mounting structure according to a second embodiment of the present invention, a light guide plate, and the like.

8 is a perspective view showing a state where the movement and the light guide plate shown in FIG. 7 are assembled to each other.

FIG. 9 is a sectional view showing a speedometer provided with the mounting structure of the embodiment shown in FIG. 7;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Vehicle combination meter (instrument device) 5a, 5b, 5c, 5d Light guide plate 6 Dial 6a Vehicle speed display scale (display unit) 6b Engine speed display scale (display unit) 6c Fuel remaining amount display scale (display) 6d) Cooling water temperature display scale (display section) 7a, 7b, 7c, 7d Movement (instrument unit) 8a, 8b, 8c, 8d Output shaft 12a, 12b, 12c, 12d Pointer 17 Flange 17a Bottom surface 20 Flat portion 21 First fixing part 24 Second fixing part 26 Slit (lock receiving part) 28 Lock part 36 Printed circuit board 37 Light source (mounting product) 38 Switch (mounting product) 40 Liquid crystal display panel (mounting product) 41 Slit 55 Mounting Structure 56 First arm part 57 First hook part 58 Second arm part 59 Second hook part 60 Lock receiving part 61 Nipping piece 71 Slide projection

Claims (9)

[Claims] 1. An instrument unit having an output shaft for rotating a pointer according to a measured amount, a printed circuit board on which a mounted product is mounted, a dial plate having a display unit, and light incident from a light source being transmitted to the character. A light guide plate that guides and shines at least one of a display unit of the plate and the pointer, and a structure for attaching the meter unit to the printed circuit board, wherein the light guide plate is A flat flat portion disposed on the front side of the instrument unit, a first fixing portion that sandwiches the instrument unit between the flat portion, and a second extending from the flat portion toward the printed circuit board. A fixing portion, wherein the printed circuit board includes a locking receiving portion that locks the second fixing portion. 2. The apparatus according to claim 1, wherein the instrument unit includes a flange that contacts the light guide plate, and the first fixing portion includes a plurality of first arm portions protruding from the flat portion toward the printed circuit board. From the tip of the first arm
A first hook portion in which the arm portions protrude in a direction approaching each other, wherein the first hook portion and a peripheral edge of the instrument unit are brought into contact with each other, and the first hook portion is pressed into the outer peripheral side of the instrument unit. By locking the first hook portion to the bottom surface of the flange,
The mounting structure for an instrument unit of an instrument device according to claim 1, wherein the light guide plate and the instrument unit are fixed to each other. 3. The instrument unit according to claim 2, wherein the first arm portions of the first fixing portion are arranged at positions facing each other with the instrument unit interposed therebetween. Mounting structure. 4. A method according to claim 1, wherein the first fixing portion includes a slide protrusion formed at a distance from the flat portion and formed along the flat portion, and the instrument unit is moved from the side of the light guide plate to the slide protrusion. Guide along the back side of the flat part along
The instrument unit mounting structure for an instrument device according to claim 1, wherein the light guide plate and the instrument unit are fixed to each other by being sandwiched between the flat portion and the slide projection. 5. A plurality of second arms protruding from the flat portion toward a printed circuit board, the second fixing portion comprising:
A second hook portion protruding from a distal end portion of each of the second arm portions in a direction in which these second arm portions approach each other, wherein the locking receiving portion penetrates the printed circuit board and A slit disposed at a position facing and coinciding with each of the arm portions, wherein the second hook portion and a peripheral edge of the slit are brought into contact with each other, and the second hook portion is pressed into the slit and engaged with the slit. The light guide plate and the printed circuit board are fixed to each other by stopping and keeping the state where the second hook portion is engaged with the slit. The mounting structure of the instrument unit of the instrument device according to 1. 6. The instrument unit according to claim 5, wherein the second arm portions of the second fixing portion are arranged at positions facing each other with the instrument unit interposed therebetween. Mounting structure. 7. The locking receiving part includes a holding piece for sandwiching the second hook part between the locking part and the printed circuit board when the second fixing part is locked. A mounting structure for an instrument unit of the instrument device according to claim 5 or 6. 8. The holding member has elasticity and is formed integrally with the printed circuit board, and when the second hook portion is press-fitted into the slit, the second holding portion comes into contact with the hook portion. The mounting structure for an instrument unit of an instrument device according to claim 7, wherein an elastic restoring force is generated to press the hook portion in a direction toward the printed circuit board. 9. The light guide plate includes a locking portion protruding from the flat portion toward the dial, the dial includes a locking receiving portion for locking the locking portion, and The instrument unit according to any one of claims 1 to 8, wherein the dial and the light guide plate are fixed to each other by interlocking an engagement receiving portion with each other. Mounting structure.