JP2012009385A - Electrical connection structure of circuit board and connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the waterproofness of a plurality of electrodes in a structure where a circuit board and a connector are electrically connected to each other.SOLUTION: An electrode housing recess 36 formed on an engine control unit (ECU) 16, which is a mounting substrate, houses a second electrode 34 to which a terminal 32 of a coupler 22 (connector) is electrically connected. A step portion 38 which is recessed toward the second electrode 34 is formed between the electrode housing recess 36 and the second electrode 34. Meanwhile, a bent portion 44 at the tip of the terminal 32 which is inserted in an insertion hole 40 of the coupler 22 and is slightly protruding from a connection opening 42 enters the electrode housing recess 36 (the step portion 38) so as to be in contact with the second electrode 34. In this instance, an end face of the coupler 22 comes into contact with a second bottom face 25 of the ECU 16. It should be noted that the terminal 32 is arranged to be inclined by a predetermined angle to the direction along the thickness direction (X-direction) of the ECU 16.

Description

  The present invention relates to an electrical connection structure between a circuit board and a connector, and more particularly to a structure for electrically connecting an electrode provided on a circuit board and a terminal provided on the connector.

  An automobile or the like is equipped with an engine control unit (ECU) that operates to electrically control the internal combustion engine. Here, as is well known, the ECU is a mounting board that is configured by being provided with a capacitor, a transistor, an analog / digital conversion circuit, etc. on a circuit board and covered with a mold resin, and is protected by being housed in a casing. Is done.

  The ECU and the device to be controlled by the ECU are electrically connected via a coupler (connector). That is, the ECU is provided with a plurality of electrodes, while each of the plurality of signal lines focused on the coupler is provided with a terminal. Each terminal is electrically connected to each electrode, whereby the ECU and the connector are connected.

  Patent Document 1 discloses a resin molded electronic component mounted on this type of circuit board. Specifically, as shown in FIGS. 1 and 2 of Patent Document 1, the resin is molded so as to cover the entire electronic component body, and is electrically connected to the electronic component body 2. Only one terminal electrode is exposed on the outer surface of the resin. The end surfaces of the terminal electrodes are set flush with the outer surface of the resin, and a thermoplastic synthetic resin that forms a weir that insulates the terminal electrodes is disposed between the terminal electrodes.

  Therefore, in this resin molded electronic component, apparently, each of the two terminal electrodes and the thermoplastic synthetic resin is accommodated in a recess formed in the resin so that each end face is flush with the outer surface of the resin. It has become a form.

  According to Patent Document 1, it is possible to avoid the occurrence of discharge between the two terminal electrodes when the thermoplastic synthetic resin becomes an electrical weir.

JP-A-5-243070

  As is well known, automobiles (including motorcycles) are sometimes driven in the rain. For this reason, there is a possibility that rainwater or the like may reach the ECU through a harness or the like. Therefore, it is desirable to adopt a configuration that can improve the waterproofness between the electrodes of the ECU.

  Thus, it is recalled that the configuration proposed in Patent Document 1 is adopted. However, in this configuration, since the end surfaces of the two terminal electrodes are exposed on the mounting surface of the resin molded electronic component, if rainwater or the like should reach the mounting surface, the rainwater or the like is It is easy to intervene between.

  In the first place, the prior art described in Patent Document 1 pays attention to avoiding the occurrence of discharge through the solder used when mounting the resin-molded electronic component on the substrate, and rainwater or the like enters. Is not expected.

  The present invention has been made to solve the above-described problems, and an object thereof is to provide an electrical connection structure between a circuit board and a connector that can improve waterproofness between electrodes.

To achieve the above object, the present invention provides a plurality of electrodes provided on a circuit board coated with a resin material and exposed from the resin material, and terminals provided on each of the plurality of connectors. An electrical connection structure for electrical connection,
The electrode is housed in a part of a recess formed in the circuit board, and a step is formed in the recess in which the electrode is housed.

  In this case, a stepped portion having a shape recessed toward the electrode is formed between the recess and the electrode. In such a configuration, the actual distance between an arbitrary electrode and another electrode adjacent thereto is such that the electrode is flush with the bottom surface of the circuit board (that is, no step is formed). ) Larger than the actual distance between adjacent electrodes when mounted. That is, the so-called creepage distance can be increased. Further, a labyrinth structure is formed by the stepped portion.

  For the reasons described above, even if rainwater or the like reaches the circuit board, it is difficult to move along the circuit board. For this reason, the waterproofness of the contact part of an electrode and a terminal improves.

  In addition, in this configuration, for example, the operator's finger or the like can be easily prevented from coming into contact with the electrode, so that the electrode can be prevented from becoming dirty.

  In addition, since the end face of the connector is brought into contact with the coated end face of the circuit board, single pole waterproofing can be achieved while improving the assemblability.

  Furthermore, it is preferable that the terminal enters the recess and contacts the electrode. In this case, since the distance from the circuit board to the connector is smaller than when the electrodes are provided so as to be flush with the end face of the circuit board, the circuit board and connector assembly can be downsized. Can be planned. As a result, space can be saved, and the degree of freedom in the layout of the assembly can be improved.

  And it is preferable to connect a terminal so that it may incline with respect to the thickness direction of a circuit board. As a result, it is easy to consolidate the terminals, and the circuit board and connector assembly can be downsized. Eventually, further space saving can be achieved. Of course, the degree of freedom of the layout of the assembly is further improved.

  In addition, it is preferable to bend, that is, bend or bend the tip of the terminal. Thereby, a so-called wiping effect appears. Therefore, it is expected that the contact strength of the terminal to the electrode is increased.

  As a preferred example of the circuit board, there can be mentioned one comprising a double-sided board mounted on a vehicle body such as a motorcycle and having electrodes provided on both end faces thereof. In this case, a functional component (for example, a throttle opening sensor or a solenoid) that performs a predetermined function of the vehicle body is disposed on one end surface side of the circuit board, and the connector is disposed on the remaining one end surface side. can do.

  This circuit board having the above-described electrical connection structure has good waterproofness. Therefore, for example, even when a motorcycle or the like is driven in the rain, rainwater or the like hardly enters. Furthermore, since it is space-saving, the freedom degree of the arrangement | positioning layout at the time of mounting in a vehicle body also improves.

  The above-described electrical connection structure can also be adopted when electrically connecting the functional component and the electrode. That is, it is only necessary to form a recess in the end face on the side where the functional component is disposed, and to accommodate an electrode for electrically connecting the functional component in this recess.

  With such a configuration, the waterproof property is also good in the electrical connection structure between the functional component and the circuit board. In addition, since the device including the circuit board is further reduced in size, further space saving can be achieved.

  When the circuit board is mounted on the vehicle body, the circuit board may be attached to the throttle body, for example. And it is preferable to provide the throttle opening sensor which is one of the functional components coaxially with the throttle shaft. In this case, since the throttle opening sensor can be arranged so as to be connected to the throttle shaft, the required space is reduced as compared with the case where the throttle opening sensor and the throttle shaft are not coaxial. Therefore, further space saving can be achieved.

  Other functional components (for example, solenoids) may be arranged so as to be biased toward the throttle wire pulling direction.

  In any case, it is preferable to set the direction of the circuit board so that the longitudinal direction of the electrode extends along the vertical direction, in other words, the electrode stands up. In this case, even if water or the like enters the concave portion, it becomes difficult for water or the like to stay in the concave portion. Therefore, the waterproofness of the contact portion between the terminal and the electrode is further improved.

  Furthermore, it is preferable that the terminal is inclined so as to rise as it approaches the electrode. In this case, even if water or the like enters from the connector side, the water or the like flows downward under the action of gravity before reaching the contact portion between the terminal and the electrode. Thereby, it can avoid that water etc. reach | attain the contact part of a terminal and an electrode.

  According to the present invention, the recess is formed in the circuit board so that the electrode is accommodated therein, and the remainder of the internal volume is formed in the recess in which the electrode is accommodated. In the meantime, a stepped portion having a shape depressed toward the electrode is formed. The presence of the stepped portion increases the distance between adjacent electrodes and forms a so-called labyrinth structure. As a result, the waterproofness between electrodes can be improved.

1 is an overall schematic side view of a motorcycle. FIG. 2 is a partially enlarged view of FIG. 1. FIG. 2 is a schematic front sectional view of a throttle device mounted on the motorcycle of FIG. 1. FIG. 4 is an enlarged partial cross-sectional exploded view of a main part of the throttle device of FIG. 3. It is a principal part expanded partial cross-section exploded view of another part of the throttle device of FIG.

  Hereinafter, the electrical connection structure between a circuit board and a connector according to the present invention will be described in detail with reference to the accompanying drawings, taking a case where it is applied to a throttle device mounted on a motorcycle as a preferred embodiment.

  First, the configuration of the motorcycle will be described with reference to FIG. 1 which is an overall schematic side view thereof and FIG. 2 which is a partially enlarged view thereof.

  A head pipe 106 that supports the front fork 104 so as to be steerable is attached to the front end of the main frame 102 of the motorcycle 100 shown in FIG. A pivot plate 108, a pair of left and right seat rails 110 that are welded at the front end to the main frame 102 and extend rearward, and an intermediate portion of the seat rail 110 and the pivot plate 108 A pair of left and right reinforcing frames 112 are attached.

  A front wheel 114 is pivotally supported at the lower end of the front fork 104, and a columnar steering handle 116 is connected to the upper portion of the front fork 104. A front fender 118 that covers the top of the front wheel 114 is supported on the front fork 104. Below the main frame 102, a water-cooled single-cylinder engine 120 having a cylinder axis slightly raised forward is disposed. The engine 120 is supported using a pivot plate 108 and a hanger plate 122 provided at an intermediate portion of the main frame 102.

  A pivot 124 penetrating the pivot plate 108 in the vehicle width direction supports a front end portion of the swing arm 126 so as to swing up and down. A rear wheel 130 to which the output of the engine 120 is transmitted via a drive chain 128 is rotatably supported at the rear end of the swing arm 126. A rear cushion 132 is provided between the seat rail 110 and the swing arm 126. A fuel tank 134 is disposed between the pair of left and right seat rails 110, and a storage box 136 accessible by opening an openable seat 135 is disposed in front of the fuel tank 134 in the vehicle body. . The rear upper portion of the rear wheel 130 is covered with a rear fender 138.

  A so-called ECU-integrated throttle device 10 containing an ECU 16 (see FIG. 3) is connected to the upper side wall of the cylinder head 137 of the engine 120 via an intake pipe. The electrical connection structure according to the present embodiment is employed in the throttle device 10, which will be described in detail later.

  A fuel injection valve 140 (see FIG. 2) for injecting fuel toward the intake port of the cylinder head 137 is attached midway in the intake pipe. The upstream end of the throttle device 10 is connected to an air cleaner box 142.

  As shown in FIG. 3, a throttle shaft 13 is rotatably supported on a throttle body 12 constituting the throttle device 10. The throttle shaft 13 is connected to a butterfly throttle valve 14 that adjusts the amount of air supplied to the engine 120. That is, the throttle valve 14 rotates following the rotation of the throttle shaft 13. A pulley 144 (see FIG. 2) is continuously arranged on the throttle valve 14, and a throttle wire 146 is wound around the pulley 144.

  A synthetic resin body cover 148 that covers a part of the engine 120, the throttle device 10 and the air cleaner box 142 is attached to the main frame 102. A leg shield 150 is disposed in front of the vehicle body cover 148 to cover the occupant's legs from the front. The vehicle body cover 148 is provided with an opening that allows adjustment of the throttle device 10 and heat removal from the engine 120 slightly behind the throttle body 12 in a side view of the vehicle body.

  Next, the throttle device 10 will be described.

  FIG. 3 is a schematic front sectional view of the throttle device 10. The throttle device 10 includes the throttle valve 14 and an ECU 16 that adjusts the opening degree of the throttle valve 14. Reference numerals 18 and 19 in FIG. 3 indicate a throttle opening sensor and a solenoid as functional parts, respectively. The throttle opening sensor 18 functions to obtain information related to the opening of the throttle valve 14, while the solenoid 19 adjusts the opening of a fuel passage (not shown) to control the amount of fuel sent to the engine 120. Play a role.

  The throttle device 10 has a casing 20, and the ECU 16 is accommodated in the casing 20. In other words, the throttle device 10 is a so-called ECU integrated type, and the ECU 16 is attached to the throttle body 12. Further, a coupler 22 as a connector is connected to the casing 20.

  The ECU 16 includes a so-called double-sided mounting board in which predetermined elements (not shown) such as capacitors are mounted on both the first bottom surface 24 and the second bottom surface 25. The throttle opening sensor 18 and the solenoid 19 are disposed on the first bottom surface 24 side, while the coupler 22 is disposed on the second bottom surface 25 side.

  As understood from FIG. 3, on the first bottom surface 24 side, the throttle opening sensor 18 is disposed coaxially with the throttle shaft 13 pivotally supported by the throttle body 12. On the other hand, the solenoid 19 is positioned substantially parallel to the throttle wire 146 drawn in a direction substantially orthogonal to the longitudinal direction of the throttle shaft 13. That is, the solenoid 19 is disposed biased toward the pulling direction side of the throttle wire 146.

  In the ECU 16, a first electrode 30 for electrically connecting the throttle opening sensor 18 and the solenoid 19 and the terminals 26 and 28 of the ECU 16 is provided on the first bottom surface 24 facing the throttle opening sensor 18 and the solenoid 19. On the other hand, on the second bottom surface 25 facing the coupler 22, a second electrode 34 for electrically connecting terminals 32 provided on each of the plurality of signal lines 31 focused on the coupler 22, A plurality are provided.

  Further, a resin material 35 is molded on the outer surface of the ECU 16 except for a portion where the first electrode 30 and the second electrode 34 are provided. In other words, the first electrode 30 and the second electrode 34 are exposed from the resin material 35.

  The electrical connection structure according to the present embodiment includes a connection between the first electrode 30 and the terminals 26 and 28 of the throttle opening sensor 18 and the solenoid 19, and a connection between the second electrode 34 and the terminal 32 of the coupler 22. Adopted for connection. Hereinafter, this point will be described in detail by exemplifying the second electrode 34 side in particular.

  As shown in an enlarged view of the main part in FIG. 4, an electrode housing recess 36 is formed in a recessed manner on the second bottom surface 25 of the ECU 16. The second electrode 34 is disposed in the electrode housing recess 36. As can be seen from FIG. 4, in this case, the dimension of the electrode housing recess 36 in the depth direction (direction along the X direction in FIGS. 3 and 4) is the height direction of the second electrode 34 (X direction). It is set larger than the dimensions. Therefore, the entire second electrode 34 is accommodated in the electrode accommodating recess 36 without protruding.

  In other words, the volume of the electrode housing recess 36 is larger than the volume of the second electrode 34, and thus the second electrode 34 is housed in a part of the electrode housing recess 36. Accordingly, a remaining portion is formed in the inner volume of the electrode receiving recess 36 after the second electrode 34 is received, and accordingly, the second electrode 34 is interposed between the electrode receiving recess 36 and the second electrode 34. A stepped portion 38 having a depressed shape is formed.

  On the other hand, the coupler 22 is formed with an insertion hole 40 for inserting the terminal 32 individually and a connection opening 42 communicating with the insertion hole 40. The insertion hole 40 is formed so as to be inclined with respect to a direction along the thickness direction (X direction) of the ECU 16. Therefore, the terminal 32 inserted into the insertion hole 40 is also inclined at a predetermined angle with respect to the direction along the thickness direction (X direction) of the ECU 16.

  The distal end portion of the terminal 32 inserted into each insertion hole 40 is bent in a direction along the thickness direction (X direction) of the ECU 16, and is then directed in the width direction (Y direction) in the vicinity of the outlet of the connection opening 42. It is bent further. The bent portion 44 extending in the width direction (Y direction) enters the electrode housing recess 36 (stepped portion 38) and contacts the second electrode 34.

  As shown in FIG. 3, an engagement protrusion 46 is provided on the side of the casing 20, while an engagement recess 48 is formed on the inner wall of the coupler 22. The engaging protrusion 46 engages with the engaging depression 48, so that the coupler 22 and the casing 20 are firmly connected. Note that reference numeral 50 in FIG. 3 indicates a sealing material.

  An electrode housing recess 52 is also formed in the first bottom surface 24 as shown in FIG. Of course, the electrode housing recesses 36 and 52 are not covered with the resin material 35.

  The first electrode 30 is entirely housed in the electrode housing recess 52, and there is no portion exposed from the electrode housing recess 52. Accordingly, a remaining portion of the internal volume is formed in the electrode housing recess 52 after the first electrode 30 is housed, and eventually, the electrode housing recess 52 and the first electrode 30 are depressed toward the first electrode 30. A stepped portion 54 having the shape described above is formed.

  The terminal 26 of the throttle opening sensor 18 and the terminal 28 of the solenoid 19 are bent and tilted toward the first electrode 30 after being bent in a direction along the width direction (Y direction) of the ECU 16. The inclined tip portion enters the electrode housing recess 52 (stepped portion 54) and comes into contact with the first electrode 30.

  As shown in FIG. 3, the throttle device 10 configured as described above is attached to the motorcycle 100 (see FIG. 1) so that the width direction (arrow Y direction) of the ECU 16 substantially matches the vertical direction. Accordingly, the first electrode 30 and the second electrode 34 extend so as to stand along the vertical direction (see FIG. 3).

  Note that the right and left directions in FIG. 3 coincide with the right and left directions of the motorcycle 100. That is, FIG. 3 is a view of the rear side of the motorcycle 100 as viewed from the front front. Accordingly, the terminal 32 is inclined so as to rise as it approaches the second electrode 34.

  The electrical connection structure according to the present embodiment is basically configured as described above. Next, the function and effect will be described.

  When the throttle device 10 is assembled, the coupler 22 and the casing 20 are connected as described above. During this time, as shown in FIGS. 3 and 4, the bent portion 44 at the tip of the terminal 32 slightly protruding from the outlet of the connection opening 42 enters the electrode housing recess 36 of the ECU 16, and enters the second electrode 34. Contact. At this time, the bent portion 44 is slightly bent along the thickness direction (X direction) of the second electrode 34 due to its elasticity.

  Further, the wiping effect on the second electrode 34 is expressed by the bent portion 44. For this reason, the contact strength of the terminal 32 to the second electrode 34 is expected to increase.

  When the bent portion 44 and the second electrode 34 come into contact with each other, the end surface of the coupler 22 comes into contact with the second bottom surface 25 of the ECU 16. As a result, the contact portion between the terminal 32 and the second electrode 34 is enclosed in the ECU 16 and the coupler 22. By this sealing, it is possible to avoid rainwater or the like from reaching the contact portion between the terminal 32 and the second electrode 34.

  Moreover, since the terminal 32 is inclined so as to rise as it approaches the second electrode 34, even if rainwater or the like enters the inside of the coupler 22, this rainwater or the like flows between the terminal 32 and the second electrode 34. Before reaching the contact part, it easily flows downward under the action of gravity. This also prevents rainwater or the like from reaching the contact portion between the terminal 32 and the second electrode 34.

  For the above reasons, it is difficult for rainwater or the like to enter the casing 20 itself. That is, the throttle device 10 is excellent in waterproofness.

  Furthermore, in this case, as a result of the entire second electrode 34 being accommodated in the electrode accommodating recess 36, a stepped portion 38 exists between the second electrode 34 and the second bottom surface 25. In this case, the actual distance between any second electrode 34 and the second electrode 34 adjacent thereto is the same as when the second electrode 34 is mounted so as to be flush with the second bottom surface 25 of the ECU 16. This is larger than the actual distance between the second electrodes 34 adjacent to each other. This is because the step portion 38 is not formed in the latter case. In addition, according to the present embodiment, the step portion 38 forms a labyrinth structure.

  Therefore, even if rainwater or the like enters the casing 20, it is difficult for the rainwater or the like to move. For this reason, the waterproof property of the contact part of the bending part 44 and the 2nd electrode 34 improves.

  In addition, since the width direction (arrow X direction) of the ECU 16 is along the vertical direction, the second electrode 34 stands. Therefore, it is difficult for rainwater or the like to stay in the electrode housing recess 36. This also contributes to an improvement in waterproofness at the contact portion between the bent portion 44 and the second electrode 34.

  In addition, it becomes difficult for rainwater or the like to extend from any second electrode 34 to the second electrode 34 adjacent thereto. This is because the stepped portion 38 exists between the adjacent second electrodes 34 and 34 as described above, so that the distance between the second electrodes 34 and 34 increases. Therefore, the waterproofness between the 2nd electrodes 34 and 34 which mutually adjoin can be improved.

  Further, since the terminal 32 is disposed so as to be inclined with respect to the direction along the thickness direction (X direction) of the ECU 16, the terminal 32 is compared with the case where the terminal 32 extends in the direction along the thickness direction (X direction). 32 can be easily aggregated. In addition, since the end surface of the coupler 22 abuts on the second bottom surface 25 of the ECU 16, the throttle device 10 is smaller than when the second electrode 34 and the terminal 32 are exposed between the second bottom surface 25 and the coupler 22. Turn into.

  Of course, the first bottom surface 24 side where the terminal 26 of the throttle opening sensor 18 and the terminal 28 of the solenoid 19 are electrically connected to the first electrode 30 of the ECU 16 is understood from the configuration shown in FIG. Thus, the same effect as the second bottom surface 26 side can be obtained. This is because the entire first electrode 30 is housed in the electrode housing recess 52, so that a stepped portion 54 is formed between the first electrode 30 and the first bottom surface 24.

  In short, the space can be saved by adopting the above configuration. Accordingly, the degree of freedom of the layout layout of the throttle device 10 is improved.

  As described above, according to the present embodiment, it is possible to improve the waterproofness of the electrical connection structure between the ECU 16 as the mounting board and the coupler 22 and to make the throttle device 10 compact, and as a result. Thus, it is possible to improve the degree of freedom of arrangement layout.

  In addition, since the step portions 38 and 54 exist, it is easily avoided that the operator's finger contacts the first electrode 30 and the second electrode 34 during the assembly operation. For this reason, it is easy to avoid contamination of the first electrode 30 and the second electrode 34.

  In particular, it is preferable to set a narrow pitch between the step portions 38 and 54. In this case, the first electrode 30 and the second electrode 34 can be further prevented from becoming dirty.

  The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention.

  For example, in the above-described embodiment, the bent portion 44 at the tip of the terminal 32 is brought into contact with the second electrode 34, but conductive rubber is interposed between the bent portion 44 and the second electrode 34. Thus, the terminal 32 and the second electrode 34 may be electrically connected. In particular, when the tip of the terminal 32 is covered with conductive rubber, there is an advantage that the waterproof effect on the terminal 32 is further improved.

  Further, according to the present invention, the connection between the first electrode 30 of the ECU 16 mounted on the motorcycle 100 and the terminals 26 and 28 of the throttle opening sensor 18 and the solenoid 19, or the second electrode 34 and the terminal 32 of the coupler 22. It is possible to employ in various cases where the circuit board electrode and the connector terminal are electrically connected.

DESCRIPTION OF SYMBOLS 10 ... Throttle device 12 ... Throttle body 13 ... Throttle shaft 14 ... Throttle valve 16 ... ECU20 ... Casing 22 ... Coupler 24, 25 ... Bottom 26, 28, 32 ... Terminal 30, 34 ... Electrode 36, 52 ... Electrode accommodation recessed part 38 54 ... Step 40 ... Insertion hole 42 ... Connection opening 44 ... Bending part 100 ... Motorcycle 144 ... Pulley 146 ... Throttle wire

Claims (10)

A plurality of electrodes (34) provided on the circuit board (16) covered with the resin material and exposed from the resin material, and terminals (32) provided on each of the plurality of connectors (22) are electrically connected. An electrical connection structure that connects electrically,
The electrode (34) is accommodated in a recess (36) that is recessed in the circuit board (16), and a step (38) is formed in the recess (36) in which the electrode (34) is accommodated. An electrical connection structure between the circuit board (16) and the connector (22).   The electrical connection structure of the circuit board (16) and the connector (22) according to claim 1, wherein the end face of the connector (22) abuts against the end face of the circuit board (16). .   The electrical connection between the circuit board (16) and the connector (22) according to claim 2, wherein the terminal (32) enters the recess (36) and contacts the electrode (34). Connection structure.   The connection structure according to claim 3, wherein the terminal (32) is connected so as to be inclined with respect to the thickness direction of the circuit board (16). Electrical connection structure.   The connection structure according to claim 3 or 4, characterized in that the tip of the terminal (32) is bent, and the circuit board (16) and the connector (22) are electrically connected. The connection structure according to any one of claims 1 to 5, wherein the circuit board (16) is mounted on a vehicle body (100), and electrodes (24, 25) are provided on both end faces (24, 25). 30 and 34) are provided on the double-sided board,
On one end face (25) side of the circuit board (16), functional parts (18, 19) having a predetermined function of the vehicle body (100) are disposed, and the remaining one end face (24) side is provided. The connector (22) is disposed on the circuit board (16) and the connector (22).   7. The connection structure according to claim 6, wherein a recess (52) is formed in a recessed manner on an end surface on the side where the functional component (18, 19) is disposed, so as to electrically connect the functional component (18, 19). The electrode (30) is accommodated in the recess (52), and the circuit board (16) and the connector (22) are electrically connected.   The connection structure according to claim 6 or 7, wherein the circuit board (16) is attached to a throttle body (12), and a throttle opening sensor (18) which is one of the functional parts (18, 19) is a throttle. A circuit board (16) and a connector (22) characterized in that they are provided coaxially with the shaft (13) and the other functional parts (19) are arranged to be biased toward the drawing direction side of the throttle wire (146). Electrical connection structure.   9. The electrical connection between the circuit board (16) and the connector (22), wherein the electrodes (30, 34) stand along the vertical direction in the connection structure according to claim 1. Connection structure.   The connection structure according to any one of claims 1 to 9, wherein the terminal (32) is inclined so as to rise as it approaches the electrode (34). Electrical connection structure of the connector (22).

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