JP2001074510A - Instrument equipment - Google Patents

Abstract

(57) [Problem] To provide an instrument device capable of facilitating mechanical fixing work of an instrument main body to a circuit board, improving productivity and suppressing an increase in cost due to an increase in assembly cost. SOLUTION: A housing 1 having a built-in rotor 2 made of a permanent magnet and supporting a rotating shaft 5 driven by the rotor 2, and a coil wound around and disposed outside the housing 1. 3, a pointer S fixed to the front end of the rotating shaft 5, and a pointer S provided on the front side of the instrument main body H where the pointer S is disposed. A printed circuit board P for supplying power, and the instrument main body H is provided with a conductive terminal 11 for electrically connecting a terminal of the coil 3 of the instrument main body H to the printed circuit board P side. An instrument device comprising a welding projection 9 for mechanically fixing the instrument body H side and the printed circuit board P side.

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, for example, an instrument panel of a vehicle such as an automobile and used as an electric movement of an analog instrument, and more particularly to a permanent magnet which is rotationally driven by energizing a coil. The present invention relates to a structure for fixing a meter body side and a printed circuit board side provided with a housing for supporting a rotor composed of a motor.

[0002]

2. Description of the Related Art Conventionally, as this type of instrument device, for example, as shown in Japanese Utility Model Application Laid-Open No. 6-4677, a printed circuit board is arranged on the front side of an instrument body composed of, for example, a cross coil instrument. The instrument main body is driven by receiving power supply from the printed circuit board.

In order to electrically connect and fix the coil side, which is the instrument body side, to the printed circuit board side, a terminal is provided on the housing side of the instrument body, an end of the coil is connected to one end of the terminal, and the terminal is connected to the terminal. The other end is electrically connected and fixed to the printed circuit board side via soldering or a connector.

Further, as a mechanical fixing between the instrument main body side and the printed circuit board side, a structure in which the instrument main body is screwed and fixed with a screw or the like is generally adopted.

[0005]

By the way, as a mechanical fixing means between the instrument main body side and the printed circuit board side, a special fixing component screw is required, and this screw tightening work must be performed. There is a problem that parts cost increases.

[0006] The present invention has been made in view of this point,
It is a main object of the present invention to provide an instrument device capable of facilitating a mechanical fixing operation of an instrument main body to a circuit board, improving productivity and suppressing an increase in cost due to an increase in assembly cost.

[0007]

In order to achieve the above object, according to the present invention, there is provided a housing having a built-in rotor made of a permanent magnet and supporting a rotating shaft driven by the rotor. An instrument main body comprising a coil wound and disposed outside the housing, a pointer fixed to a front end of the rotating shaft, and a pointer provided on the front side of the instrument main body on which the pointer is disposed. A printed circuit board that supplies power to the instrument body, and the instrument body is provided with conductive terminals for electrically connecting the coil terminal side of the instrument body and the printed circuit board side. And a welding projection for mechanically fixing the instrument main body side and the printed circuit board side to each other.

According to the first aspect of the present invention, a welding projection is provided on the instrument main body, and the welding projection is inserted into a printed circuit board and is thermally caulked, so that the instrument main body side and the printed circuit board side can be simplified. Mechanically fixed to Therefore, the fixing reliability between the instrument main body side and the printed circuit board side can be enhanced while suppressing cost increase by eliminating the need for fixing parts such as screws.

According to a second aspect of the present invention, in the first aspect of the invention, a plurality of the welding projections are provided, and the welding projections are provided with different outer diameters, shapes, or mounting positions. By providing a welding portion mounting hole in the printed circuit board in accordance with the welding projection, the problem of incorrectly mounting the instrument body to the printed circuit board in the mounting position or direction can be solved. In other words, if the outer diameters of the welding protrusions are made different, if the mounting direction is mistakenly attempted with the mounting direction being different, the size of the welding portion mounting holes provided on the printed circuit board may not match, or It is immediately apparent that the wrong combination is due to the difference in the shape of the holes for mounting, and the position of the heat welding protrusion is shifted away from the position, so it is easy to check whether the mounting position and orientation are in the correct positional relationship. Can be determined.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the conductive terminal on the instrument main body side and the printed circuit board side are electrically connected by coupling with male and female terminals. Instrument device. Thus, according to the third aspect of the present invention, the electrical routing is easily performed by the connection by the male and female terminals, and the electrical assembling work efficiency can be improved.

According to a fourth aspect of the present invention, in the third aspect of the invention, the conductive terminal on the instrument main body side is formed as a female terminal, and the terminal on the printed circuit board side is formed as a pin-shaped male terminal. With this configuration, the electric wiring can be easily performed by the connection using the male and female terminals, as in the above-described claim 3, and the efficiency of the electric assembling operation can be improved.

According to a fifth aspect of the present invention, in the invention of the fourth aspect, the instrument main body is provided with a divergent guide portion adjacent to an edge portion of the female terminal. At the time of electrical assembling, even if there is a slight displacement of the pin-shaped male terminal by the guide portion, the pin-shaped male terminal can be easily introduced into the female terminal side even if there is some misalignment. It is useful.

According to a sixth aspect of the present invention, in the invention of the fourth aspect, the female terminal on the instrument body side is integrally formed with a divergent inducing portion for guiding the male terminal of the printed circuit board. In the electric assembly, the male terminal can be inserted into the female terminal along the divergent guiding portion at the time of electrical assembling, and the assembling work efficiency can be improved.

According to a seventh aspect of the present invention, in the first aspect of the present invention, the upper and lower sides of the rotary shaft are supported by a housing having a rotor including the permanent magnet therein. The upper bearing portion extends and is inserted and arranged in a support hole provided in the printed circuit board. Thereby, the mounting position of the instrument main body with respect to the printed circuit board is determined along the support hole, and the accuracy of the mounting position can be increased, and in some cases, the instrument main body side with respect to the printed circuit board side. It is also possible to serve as an invitation unit.

According to an eighth aspect of the present invention, in the first aspect of the present invention, the end of the coil is entangled with the conductive terminal to be conductively connected, and then the terminal is bent after the connection. By providing the coil with a connecting piece that provides looseness for preventing disconnection, it is possible to prevent the coil from being disconnected, and by bending the connecting piece, it is possible to suppress the height of the instrument body. As a result, it is possible to reduce the thickness of the entire instrument at the time of electrical routing.

[0016]

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings show embodiments of the present invention, and the embodiments of the present invention will be described below based on the drawings.

FIGS. 1 and 2 show a first embodiment of the present invention. FIG. 1 is a sectional view showing a main part of an instrument device according to the present invention. FIG. It is sectional drawing of the principal part which showed the state attached to a board side.

In FIG. 1, as shown in FIG. 1, as a meter device, a meter body H composed of a cross-coil type meter in this embodiment and a pointer S attached to the meter body H are used.
An instrument dial M, a light guide L arranged behind the instrument dial M, and a printed circuit board P located behind the light guide L and arranged in front of the instrument main body H. Have been.

As shown in FIGS. 1 and 2, the instrument main body H includes a housing 1 which is a hollow synthetic resin bobbin case, and a rotor 2 comprising a permanent magnet housed in the housing 1. And a coil 3 wound around the outer periphery of the housing 1 and a metal-made cylindrical cup-shaped magnetic shield case 4 covering the outer periphery of the housing 1 including the coil 3 except for the front portion thereof. The rotating shaft 5 is fixed to the center of the shaft, and the upper and lower portions of the rotating shaft 5 are supported by the housing 1, and the upper bearing 6 formed by the housing 1 is extended in a cylindrical shape. , The upper end of the rotating shaft 5 protrudes from the front side of the housing 1.

The housing 1 is formed of a synthetic resin material and is divided into two parts. At a predetermined position of the housing 1 on the upper side, it serves as a guide when winding a coil crossing the outer periphery of the housing 1. The legs 7 are formed at four places. In this embodiment, the upper end of the legs 7 is formed as a mounting surface 8 which is arranged to abut against the back side of the printed circuit board P. A welding projection 9 is integrally formed so as to protrude toward the printed circuit board P, and a terminal insertion hole 10 is formed at the center of the leg 7 along the axial direction of the rotary shaft 5. .

In the terminal insertion hole 10, a conductive terminal 11 is provided.
The conductive terminal 11 is formed as a female terminal formed by bending a conductive metal thin plate into a substantially hollow box shape, and an elastic contact is formed inside the female conductive terminal 11. A piece 12 is formed, and a connection piece 13 is provided on the upper end opening side of the conductive terminal 11 so as to be connected to the end of the coil 3 so as to be electrically connected.
After the coil 3 is entangled and the solder connection is made and the electrical connection is made, the connection piece 13 is bent to give the terminal end of the coil 3 a looseness for preventing disconnection.

The pointer S is composed of a pointer main body 21 made of a translucent material and a light-shielding cap 22 covering a predetermined portion of the pointer main body 21. The pointer main body 21 is attached to the tip of the rotating shaft 5 of the meter main body H. The boss portion 23 to be fixed and an LED described later
A reflecting portion 24 for reflecting and guiding the illumination light to the front end side,
The center of rotation including the reflection part 24 and the boss part 23 is covered with the light-shielding cap 22 and the light-shielding cap 2
The front of the pointer main body 21 that is not covered with 2 is made bright and bright by the light emission of the LED.

In the instrument dial M, the not-shown scales, characters, indices, marks, and symbols, which are indicated by the pointer S, are light-transmissive, and other than the indices, marks, and symbols are light-shielding. When an LED, which will be described later, emits light, the illuminating light is transmitted through an index portion, a mark, and a symbol to be displayed by light emission.

The light guide L is formed of a doughnut-shaped transparent plate that gradually becomes thinner from the outer periphery to the center. The upper surface of the outer peripheral end of the light guide L reflects and guides the illumination light of the LED described later toward the center. A reflecting portion 31 for guiding illumination light is formed on the plate surface portion, and is arranged behind the instrument dial M in order to shine the index portion, mark, and symbol of the instrument dial M.

The printed circuit board P has a support hole 41 at a position corresponding to the rotation shaft 5, and the support hole 41 protrudes forward of the (upper) housing 1 of the instrument main body H including the rotation shaft 5. The cylindrical bearing part 6 (bearing part) is inserted,
A support hole 41 is provided so as to stably hold the cylindrical bearing portion 6, and a position of the printed circuit board P facing the heat welding protrusion 9 provided on the leg 7 of the housing 1 is provided. A welding portion mounting hole 42 for receiving the heat welding projection 9 is provided.

On the front and back surfaces of the printed circuit board P, electronic components 43 for driving the instrument body H and LEs for a plurality of illuminations are provided.
D-shaped (light emitting diode) 44 and pin-shaped male terminals 45 are provided corresponding to the mounting positions of the hollow box-shaped conductive terminals 11 of the female body of the meter main body H, respectively, and are provided so as to be capable of male and female coupling. .

The LED 44 for illumination uses a pointer S
Are mounted and fixed by soldering to the front side of the printed circuit board P corresponding to the reflecting portion 24 (rotation locus position) and the reflecting portion 31 position of the light guide L, and are electrically connected.
The pin-shaped male terminal 45 is electrically connected to the back side of the printed circuit board P by soldering.

The electrical connection between the instrument body H and the printed circuit board P is made by inserting the pin-shaped male terminal 45 provided on the printed circuit board P into the female conductive terminal 11 on the instrument body H. As a result, the instrument main body H and the printed circuit board P are electrically routed, so that power can be supplied to the instrument main body H.

The instrument main body H is mechanically fixed to the printed circuit board P by inserting a welding projection 9 provided on the housing 1 of the instrument main body H into a welding portion mounting hole 42 of the printed circuit board P and thermally caulking. As a result, the welding fixing portion 9A of the welding projection 9 melted by heat caulking keeps the retaining portion 9A from coming off, and the instrument main body H side and the printed circuit board P side are easily mechanically fixed.

At this time, as is apparent from FIG. 1 or FIG. 2, if the left and right directions are interchanged, for example, by forming the outer diameters of the welding projections 9 differently, the welding projections 9 are changed due to the difference in dimensions. Can no longer enter the welding portion mounting hole 42 of the printed circuit board P, and as a result, the problem of mounting the meter body H on the printed circuit board P with a wrong mounting position and orientation can be solved. That is, if the outer diameters of the welding projections 9 are made different from each other, if the mounting direction is erroneously changed, the size of the welding portion mounting hole 42 provided in the printed circuit board P will not match. , Mis-assembly can be prevented. Although not shown, by providing the welding protrusions 9 with different outer diameters, it is immediately understood that the welding is incorrect due to the difference in the shape of the holes for dimension mounting. When the mounting directions of the printed circuit board P and the meter main body H are different by providing different mounting positions, the positions of the welding projections 9 are shifted away from each other, so that the mounting positions and directions are in the correct positional relationship. Can be easily determined.

In this embodiment, when the printed circuit board P and the instrument main body H are assembled, the conductive terminal 11 on the instrument main body H side is a female terminal and the terminal on the printed circuit board P side is a male male terminal. By being formed as the terminal 45, electrical connection can be easily performed by the connection of the male and female terminals 11, 41, and the efficiency of the electrical assembling operation can be improved.

In this embodiment, the housing 1 in which the rotor 2 made of a permanent magnet is built supports the upper and lower portions of the rotary shaft 5 and the upper bearing portion 6 is extended to form a support hole provided in the printed circuit board P. The insertion position of the instrument main body H with respect to the printed circuit board P is determined along the support hole 41 by being inserted and arranged in the printed circuit board P, and the accuracy of the mounting position can be increased. Can also serve as a guiding portion of the instrument main body H side with respect to the printed board P side, and when the welding projection 9 and the welding portion mounting hole 42 are aligned as described above, the printed board P It is also possible to double as a reference by combining the instrument body H with the instrument body H.

Further, in this embodiment, a connection piece 13 is provided on the upper end opening side of the conductive terminal 11 so as to be connected to the end of the coil 3 so as to be electrically connected thereto. After the electrical connection is made by entanglement of the coil 3 and electric connection is made, the connection piece 13 is bent to give a loose end to the end of the coil 3 for preventing disconnection. Disconnection can be prevented beforehand, and the height of the instrument main body can be suppressed by bending the connection piece 13, thereby contributing to a reduction in thickness of the entire instrument at the time of electrical wiring. .

In this embodiment, the printed circuit board P includes
An LED 44, which is a light emitting element for illuminating at least one of the hands S or the instrument dial M, is mounted on the front side thereof, and the instrument main body H is connected to the back side of the printed board P. On the back side of P, conduction between the instrument main body H and the printed board P is performed, and on the front side of the printed board P, a light emitting element L for illumination is used.
It is said that the ED 44 is assembled, and the electric wiring between the instrument main body H and the printed circuit board P can be efficiently performed simultaneously with the illumination of the instrument while effectively using the front and back surfaces of one printed circuit board P to increase the mounting density. There is also an effect.

At this time, when illuminating the pointer S or the instrument dial M, the distance between the LED 44 and the pointer S (the pointer main body 21) or the light guide L to be directly irradiated with the illumination light is determined in consideration of the illumination efficiency. If you do, you need to get some proximity,
As described above, since the electrical conduction can be measured by increasing the mounting density of the front and back surfaces of the printed circuit board P, the LED 44 for illumination and the pointer S (the pointer main body 21) or the light guide L are brought close to each other. LED does not become an obstacle at the time of
Since it is possible to arrange the pointer 44 close to the pointer S (the pointer main body 21) and the light guide L, it is also advantageous for reducing the thickness of the instrument device.

FIG. 3 shows a second embodiment of the present invention. In this embodiment, the female conductive terminal 11 is made of a synthetic resin material of the meter body H in the same manner as in the first embodiment. The conductive terminal 11 is accommodated in the terminal insertion hole 10 of the leg 7 provided in the housing 1. The conductive terminal 11 is formed by bending a conductive metal thin plate into a substantially hollow box shape as in the first embodiment. A connection piece which is formed by a mold terminal and is electrically connected to the female conductive terminal 11 by tying the end of the coil 3 to the upper end opening side in the same manner as in the first embodiment described above. 13 are connected to each other.
After the coil 3 is entangled with the coil 3 and the electrical connection is made, the connection piece 13 is bent and the coil 3
Is configured to provide a loose end for preventing disconnection.

In the second embodiment, the conductive terminal (female terminal) 11 is provided in the housing 1 of the instrument main body H.
A flared guide portion 14 is provided adjacent to an upper end opening side of the terminal insertion hole 10 for receiving the female terminal 11, that is, an edge portion on an upper end side of the female terminal 11. The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description is omitted.

According to this structure, the same effect as that of the first embodiment can be obtained. In addition, the divergent guide portion 14 is provided on the instrument main body H adjacent to the edge of the female terminal 11. With this arrangement, at the time of electrical assembling, the pin-shaped male terminal 45 is guided by the guide portion 14 even if there is a slight displacement, and can be easily received by the female terminal 11 side. The efficiency of the assembling operation can be further improved.

FIG. 4 shows a third embodiment of the present invention. In this embodiment, the female conductive terminal 11 is made of a synthetic resin material of the meter body H in the same manner as in the above-described embodiments. It is accommodated and arranged in a terminal insertion hole 10 of a leg 7 provided in the housing 1. This conductive terminal 11 is the first terminal described above.
In the same manner as in the first embodiment, the conductive metal thin plate is formed by a female terminal obtained by bending a conductive metal thin plate into a substantially hollow box shape. A connecting piece 13 for electrically connecting the terminal end of the coil 3 is provided on the side thereof, and the male terminal 45 of the printed circuit board P is integrally formed from the upper end opening side of the female conductive terminal 11. Is provided with a divergent invitation portion 15 that can guide the user.

According to this structure, the same effect as that of the first embodiment can be obtained. In addition, the male terminal 45 of the printed circuit board P is guided to the female conductive terminal 11 on the instrument main body H side. By providing the divergent guiding portion 15 integrally, the male terminal 45 is inserted into the female conductive terminal 11 along the divergent guiding portion 15 during electrical assembly. And the assembling work efficiency can be improved.

In each embodiment, when the male terminal 45 on the printed circuit board P is inserted, a slight displacement may occur due to the elastic contact piece 12 provided inside the female conductive terminal 11. Even if there is, male terminal 4
5, the elastic contact pressure is applied, and thereby the degree of electrical contact can be kept good.

In each of the above embodiments, the conductive terminal 11 is inserted and fixed in the housing 1 of the instrument main body H. However, the conductive terminal 11 may be fixed by insert molding when the housing 1 is molded. In each embodiment, a cross-coil type instrument has been described as an example of the instrument body. However, the main part structure of the present invention may be applied to another instrument body, for example, an instrument body composed of a stepping motor or the like. Good thing. In this case, a frame that supports the movable portion of the stepping motor, a mounting plate, a frame body that holds the coil, and the like may be used as a housing, and a welding protrusion may be formed on the housing.

[0043]

As described above in detail, according to the first aspect of the present invention, a welding projection is provided on the instrument main body, and the welding projection is inserted into the printed circuit board and thermally caulked. The side and the printed circuit board side are easily mechanically fixed. Therefore, there is an effect that the fixing reliability between the instrument main body side and the printed circuit board side can be improved while suppressing an increase in cost by eliminating the need for fixing parts such as screws.

According to a second aspect of the present invention, in the first aspect of the invention, a plurality of the welding projections are provided, and the welding projections are provided with different outer diameters, shapes, or mounting positions. By providing a welding portion mounting hole in the printed circuit board in accordance with the welding projection, the problem of incorrectly mounting the instrument body to the printed circuit board in the mounting position or direction can be solved. In other words, if the outer diameters of the welding protrusions are made different, if the mounting direction is mistakenly attempted with the mounting direction being different, the size of the welding portion mounting holes provided on the printed circuit board may not match, or Immediately recognizes that the assembly is incorrect due to the difference in the shape of the mounting hole, and the position of the welding protrusion is shifted away from it, making it easy to determine whether the mounting position and orientation are in the correct positional relationship There is an effect that can be.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the conductive terminal on the instrument main body side and the printed circuit board side are electrically connected by coupling with male and female terminals. Instrument device. Thus, according to the third aspect of the present invention, the electrical routing is easily performed by the connection by the male and female terminals, and the electrical assembling work efficiency can be improved.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the conductive terminal on the instrument main body side is formed as a female terminal, and the terminal on the printed circuit board is formed as a pin-shaped male terminal. With this configuration, the electric wiring can be easily performed by the connection using the male and female terminals, as in the above-described third embodiment, and the electric assembling work efficiency can be improved.

According to a fifth aspect of the present invention, in the invention of the fourth aspect, the instrument main body is provided with a divergent guide portion adjacent to an edge portion of the female terminal. At the time of electrical assembling, even if there is a slight displacement of the pin-shaped male terminal by the guide portion, the pin-shaped male terminal can be easily introduced into the female terminal side even if there is some misalignment. It is useful.

According to a sixth aspect of the present invention, in the invention according to the fourth aspect, the female terminal on the instrument body side is integrally formed with a divergent inducing portion for guiding the male terminal of the printed circuit board. In the case of electrical assembling, the male terminal can be inserted into the female terminal along the flared invitation portion at the time of electrical assembling, and the effect of increasing the assembling work efficiency can be obtained. is there.

According to a seventh aspect of the present invention, in the first aspect of the present invention, the upper and lower portions of the rotary shaft are supported by the housing and the upper bearing portion is extended. It is to be inserted and arranged in a support hole provided in the printed circuit board. Thereby, the mounting position of the instrument main body with respect to the printed circuit board is determined along the support hole, and the accuracy of the mounting position can be increased, and in some cases, the instrument main body side with respect to the printed circuit board side. It is also possible to serve as an invitation unit.

According to an eighth aspect of the present invention, in any one of the first to seventh aspects of the present invention, the terminal of the coil is connected to the conductive terminal by conducting the connection, and the connection is bent after the connection. By providing the coil with a connecting piece that provides looseness for preventing disconnection, it is possible to prevent the coil from being disconnected, and by bending the connecting piece, it is possible to suppress the height of the instrument body. As a result, it is possible to reduce the thickness of the entire instrument at the time of electrical routing.

[Brief description of the drawings]

FIG. 1 is a sectional view of an instrument device according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of a main part before the instrument main body and the printed board shown in FIG. 1 are assembled.

FIG. 3 is a sectional view of an instrument device according to a second embodiment of the present invention.

FIG. 4 is a cross-sectional view of a main part of a third embodiment of the present invention before a printed circuit board and an instrument main body are assembled.

[Explanation of symbols]

 H Instrument body L Light guide M Instrument dial P Printed circuit board S Pointer 1 Housing 2 Rotor (permanent magnet) 3 Coil 4 Magnetic shield case 5 Rotating shaft 6 Bearing 7 Leg 8 Mounting surface 9 Welding projection 9A Welding fixing part DESCRIPTION OF SYMBOLS 10 Terminal insertion hole 11 Conductive terminal (female terminal) 12 Contact piece 13 Connection piece 14 Guide part 15 Induction part 21 Pointer main body 24 Reflection part 31 Reflection part 41 Support hole 42 Welding part mounting hole 44 LED (light emitting diode) 45 Male Terminal

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tomoyuki Tanaka 2-2-234 Higashizao, Nagaoka, Niigata Japan Inside Seiki Co., Ltd. (72) Inventor Tsuyoshi Takahashi 2-2-234 Higashizao, Nagaoka-shi, Niigata Japan Seiki Co., Ltd. (72) Inventor Masaei Taguchi 2-2-234 Higashi Zao, Nagaoka City, Niigata Prefecture Japan Seiki Co., Ltd.

Claims (8)

[Claims] 1. An instrument comprising a housing having a built-in rotor made of a permanent magnet and supporting a rotating shaft driven by the rotor, and a coil wound around and disposed outside the housing. A main body, a pointer fixed to a front end of the rotating shaft, and a printed circuit board provided on a front side of the instrument main body where the pointer is disposed, and supplying power to the instrument main body; The instrument body is provided with conductive terminals for electrically connecting the coil terminal side of the instrument body and the printed circuit board side, and for mechanically fixing the instrument body side and the printed circuit board side. An instrument device comprising a welding projection. 2. A method according to claim 1, wherein a plurality of welding projections are provided.
2. The instrument device according to claim 1, wherein the welding projections are provided with different outer diameters, shapes, or mounting positions, and welding holes are provided in the printed circuit board in accordance with the welding projections. . 3. The instrument device according to claim 1, wherein the conductive terminal on the instrument main body side and the printed circuit board side are electrically connected by coupling with male and female terminals. 4. The instrument device according to claim 3, wherein the conductive terminal on the instrument main body side is formed as a female terminal, and the terminal on the printed circuit board side is formed as a pin-shaped male terminal. 5. The instrument device according to claim 4, wherein the instrument main body is provided with a divergent guide portion adjacent to an edge portion of the female terminal. 6. The female terminal on the instrument body side is provided integrally with a divergent inducing portion for guiding a male terminal of the printed circuit board.
Instrumentation device as described. 7. The apparatus according to claim 1, wherein the upper and lower portions of the rotary shaft are supported by the housing, and the upper bearing portion is extended and inserted into a support hole provided in the printed circuit board. The instrument device according to claim 6. 8. A connection piece which is connected to the conductive terminal by tangling an end portion of the coil and which is bent after the connection to give a looseness to the coil for preventing disconnection. The meter device according to any one of claims 1 to 7.