Electronic control unit

Abstract

The present invention provides an electronic control unit capable of improving the safety of a straddle-type vehicle. The electronic control unit (5) of the present invention includes an electronic circuit unit (52) and a housing (53). The aforementioned electronic circuit unit (52) includes a substrate (521) and a plurality of electronic components (522). The aforementioned housing (53) houses the electronic circuit unit (52). A waterproof and moisture-permeable component (535) for blocking a through-hole (533) that communicates the inside and outside of the housing (53) is provided in the housing (53). Normally, the flow of water between the inside and outside of the housing (53) is cut off by the waterproof and moisture-permeable component (535), and gas can flow through the waterproof and moisture-permeable component (535). When abnormal smoking occurs and smoke is generated inside the housing (53), due to the smoke (S1) generated inside the housing (53), the waterproof and moisture-permeable component (535) becomes blocked, and the flow of gas between the inside and outside of the housing (53) is cut off by the waterproof and moisture-permeable component (535).

Description

Technical Field

[0001] The present application relates to an electronic control unit capable of improving the safety of a straddle-type vehicle. Background Art

[0002] Various electronic control units for controlling the operations of respective devices are mounted on straddle-type vehicles such as motorcycles. For example, in Patent Document 1, as an electronic control unit mounted on a motorcycle, a hydraulic control unit for controlling the braking force for braking the wheels of the motorcycle is disclosed.

[0003] Patent Document 1: Japanese Unexamined Patent Application Publication No. 2018-008674.

[0004] In an electronic control unit, an electronic circuit unit including a substrate and a plurality of electronic components mounted on the wiring of the substrate is housed in a housing. Here, since an overcurrent flows through the electronic components or the like, there is a case where abnormal heat generation occurs in the housing. Therefore, it is desired to suppress the damage to the safety of the vehicle due to abnormal heat generation in the housing of the electronic control unit and improve the safety. In particular, in a straddle-type vehicle, the influence of abnormal heat generation in the housing of the electronic control unit on the safety is great, so the necessity of improving the safety against abnormal heat generation is high. Summary of the Invention

[0005] The present invention has been made in view of the above problems, and an electronic control unit capable of improving the safety of a straddle-type vehicle is obtained.

[0006] The electronic control unit of the present invention is an electronic control unit for a straddle-type vehicle, characterized by including an electronic circuit unit and a housing, the electronic circuit unit including a substrate and a plurality of electronic components mounted on the wiring of the substrate, the housing housing the electronic circuit unit, a through hole communicating the inside and the outside of the housing being provided in the housing, and a waterproof and moisture-permeable member for blocking the through hole being provided, in a normal state, the flow of water between the inside and the outside of the housing being cut off by the waterproof and moisture-permeable member, gas being able to flow between the inside and the outside of the housing via the waterproof and moisture-permeable member, and when abnormal smoke generation occurs in the housing, due to the smoke generated in the housing, clogging occurs at the waterproof and moisture-permeable member, and the flow of gas between the inside and the outside of the housing being cut off by the waterproof and moisture-permeable member.

[0007] Advantages of the Invention

[0008] In the electronic control unit of the present invention, at the housing that houses the electronic circuit unit, a waterproof and moisture-permeable component is provided to block the through-hole that connects the inside and outside of the housing. Normally, the flow of water between the inside and outside of the housing is cut off by the waterproof and moisture-permeable component, and gas can flow between the inside and outside of the housing via the waterproof and moisture-permeable component. On the other hand, when abnormal smoking occurs inside the housing, due to the smoke generated inside the housing, blockage occurs at the waterproof and moisture-permeable component, and the flow of gas between the inside and outside of the housing is cut off by the waterproof and moisture-permeable component. Thus, when abnormal heating occurs inside the housing, the supply of oxygen from the outside of the housing to the inside can be suppressed, so the ignition and spread of fire inside the housing can be suppressed. Therefore, the safety of the riding vehicle can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 FIG. is a schematic diagram showing the schematic structure of a motorcycle equipped with the braking system according to the first embodiment of the present invention.

[0010] Figure 2 FIG. is a schematic diagram showing the schematic structure of the braking system according to the first embodiment of the present invention.

[0011] Figure 3 FIG. is a perspective view showing the hydraulic control unit according to the first embodiment of the present invention.

[0012] Figure 4 FIG. is a cross-sectional view of the inside of the housing of the hydraulic control unit according to the first embodiment of the present invention.

[0013] Figure 5 FIG. is a schematic diagram showing the schematic structure of the electronic circuit of the electronic circuit unit according to the first embodiment of the present invention.

[0014] Figure 6 FIG. is a cross-sectional view of the inside of the housing of the hydraulic control unit according to the second embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0015] Hereinafter, the electronic control unit of the present invention will be described with reference to the drawings. In addition, the hydraulic control unit of the braking system for a two-wheeled motorcycle is described below, but the electronic control unit of the present invention can also be used for other riding vehicles (such as three-wheeled motorcycles, all-terrain vehicles, bicycles, etc.) other than two-wheeled motorcycles. In addition, a riding vehicle means a vehicle on which a rider straddles, and also includes scooters and the like. Furthermore, the electronic control unit of the present invention can also be an electronic control unit other than a hydraulic control unit (such as an engine control unit, a suspension control unit, etc.).

[0016] In addition, in the following, the case where there is one front-wheel braking mechanism and one rear-wheel braking mechanism respectively is described. However, at least one of the front-wheel braking mechanism and the rear-wheel braking mechanism may also be plural. In addition, one of the front-wheel braking mechanism and the rear-wheel braking mechanism may not be provided. In addition, in the following, the case where a main flow path, a sub-flow path, and a supply flow path are provided in each braking mechanism is described. However, the supply flow path may be omitted from the flow paths of each braking mechanism.

[0017] In addition, the structures and the like described below are examples, and the electronic control unit of the present invention is not limited to such structures and the like.

[0018] In addition, in the following, the same or similar descriptions are appropriately simplified or omitted. In addition, in each drawing, for the same or similar components or parts, the drawing reference numerals are omitted or the same drawing reference numerals are given. In addition, for the detailed structures, the illustration is appropriately simplified or omitted.

[0019] <First Embodiment>

[0020] The first embodiment of the present invention will be described.

[0021] [Structure of Braking System]

[0022] Refer to Figure 1 and Figure 2 , and the schematic structure of the braking system 10 of the first embodiment of the present invention will be described.

[0023] Figure 1 is a schematic view showing the schematic structure of the motorcycle 100 equipped with the braking system 10. Figure 2 is a schematic view showing the schematic structure of the braking system 10.

[0024] As Figure 1 and Figure 2 shown, the braking system 10 is mounted on the motorcycle 100. The motorcycle 100 includes a vehicle body 1, a handlebar 2 rotatably held by the vehicle body 1, a front wheel 3 rotatably held by the vehicle body 1 together with the handlebar 2, and a rear wheel 4 rotatably held by the vehicle body 1. The motorcycle 100 includes, for example, an engine (not shown), and travels using the power output from the engine. In addition, the motorcycle 100 may also travel using the power output from a motor.

[0025] The brake system 10 includes a first brake operating unit 11, a front wheel brake mechanism 12 for braking the front wheel 3 in conjunction with at least the first brake operating unit 11, a second brake operating unit 13, and a rear wheel brake mechanism 14 for braking the rear wheel 4 in conjunction with at least the second brake operating unit 13. In addition, the brake system 10 includes a hydraulic control unit 5, in which a part of the front wheel brake mechanism 12 and a part of the rear wheel brake mechanism 14 are included. The hydraulic control unit 5 is an electronic control unit that performs the function of controlling the braking force applied to the front wheel 3 by the front wheel brake mechanism 12 and the braking force applied to the rear wheel 4 by the rear wheel brake mechanism 14.

[0026] The first brake operating unit 11 is provided on the handlebar 2 and is operated by the rider's hand. The first brake operating unit 11 is, for example, a brake lever. The second brake operating unit 13 is provided at the lower part of the vehicle body 1 and is operated by the rider's foot. The second brake operating unit 13 is, for example, a brake pedal.

[0027] Each of the front wheel brake mechanism 12 and the rear wheel brake mechanism 14 includes a master cylinder 21 with a built-in piston (not shown), a reservoir 22 attached to the master cylinder 21, a brake caliper 23 held on the vehicle body 1 and having a brake pad (not shown), a wheel cylinder 24 provided in the brake caliper 23, a main flow path 25 for circulating the brake fluid of the master cylinder 21 to the wheel cylinder 24, a secondary flow path 26 for discharging the brake fluid of the wheel cylinder 24, and a supply flow path 27 for supplying the brake fluid of the master cylinder 21 to the secondary flow path 26.

[0028] An inlet valve (EV) 31 is provided in the main flow path 25. The secondary flow path 26 bypasses the main flow path 25 between the wheel cylinder 24 side and the master cylinder 21 side relative to the inlet valve 31. In the secondary flow path 26, an outlet valve (AV) 32, a reservoir 33, and a pump 34 are provided in order from the upstream side. A first valve (USV) 35 is provided between the end of the main flow path 25 on the master cylinder 21 side and the portion connected to the downstream end of the secondary flow path 26. The supply flow path 27 enables communication between the master cylinder 21 and the suction side of the pump 34 in the secondary flow path 26. A second valve (HSV) 36 is provided in the supply flow path 27.

[0029] The inlet valve 31 is, for example, a solenoid valve that opens when the power is not supplied and closes when the power is supplied. The outlet valve 32 is, for example, a solenoid valve that closes when the power is not supplied and opens when the power is supplied. The first valve 35 is, for example, a solenoid valve that opens when the power is not supplied and closes when the power is supplied. The second valve 36 is, for example, a solenoid valve that closes when the power is not supplied and opens when the power is supplied.

[0030] The main flow path 25, the secondary flow path 26, and the supply flow path 27 are formed on the base body 511 (see Figure 3) Inside. The inlet valve 31, the outlet valve 32, the reservoir 33, the pump 34, the first valve 35, and the second valve 36 are components for controlling the braking hydraulic pressure generated by the motorcycle 100 and are installed in the base body 511. The base body 511 and the above-mentioned components installed in the base body 511 are included in the hydraulic control mechanism 51 of the hydraulic control unit 5. The operation of the hydraulic control mechanism 51 is controlled by the electronic circuit unit 52 described later. Thus, the braking force applied to the front wheel 3 by the front wheel braking mechanism 12 and the braking force applied to the rear wheel 4 by the rear wheel braking mechanism 14 are controlled.

[0031] In the normal state (that is, the state where the anti-lock braking operation or the automatic braking operation described later is not executed), the inlet valve 31 is open, the outlet valve 32 is closed, the first valve 35 is open, and the second valve 36 is closed. Thus, the brake fluid flows from the master cylinder 21 to the wheel cylinder 24 through the main flow path 25 without passing through the sub-flow path 26 and the supply flow path 27. In this state, if the first brake operation unit 11 is operated, at the front wheel braking mechanism 12, the piston (not shown) of the master cylinder 21 is pushed in, the hydraulic pressure of the brake fluid in the wheel cylinder 24 increases, and the brake pad (not shown) of the brake caliper 23 is pushed against the rotor 3a of the front wheel 3 to apply a braking force to the front wheel 3. In addition, if the second brake operation unit 13 is operated, at the rear wheel braking mechanism 14, the piston (not shown) of the master cylinder 21 is pushed in, the hydraulic pressure of the brake fluid in the wheel cylinder 24 increases, and the brake pad (not shown) of the brake caliper 23 is pushed against the rotor 48 of the rear wheel 4 to apply a braking force to the rear wheel 4.

[0032] The anti-lock braking operation is, for example, an operation that is executed when the wheel (specifically, the front wheel 3 or the rear wheel 4) is locked or there is a possibility of being locked, and reduces the braking force applied to the wheel regardless of the operation of the braking operation unit (specifically, the first brake operation unit 11 or the second brake operation unit 13) performed by the rider.

[0033] For example, in the state where the anti-lock braking operation is executed, first, the inlet valve 31 is closed, the outlet valve 32 is open, the first valve 35 is open, and the second valve 36 is closed. Thus, the flow of the brake fluid between the main flow path 25 and the wheel cylinder 24 stops, and the brake fluid can flow from the wheel cylinder 24 to the sub-flow path 26. Therefore, the brake fluid flows from the wheel cylinder 24 into the reservoir 33, the hydraulic pressure of the brake fluid in the wheel cylinder 24 decreases, and the braking force applied to the wheel decreases. The brake fluid flowing into the reservoir 33 is driven by the pump 34 and thus returns to the main flow path 25 through the sub-flow path 26.

[0034] Further, by closing both the inlet valve 31 and the outlet valve 32 from the above-mentioned state, the flow of the brake fluid between the main flow path 25, the sub-flow path 26, and the wheel cylinder 24 stops, the hydraulic pressure of the brake fluid in the wheel cylinder 24 is maintained, and the braking force applied to the wheel is maintained. After that, the inlet valve 31 is opened and the outlet valve 32 is closed. As a result, the flow of the brake fluid between the main flow path 25 and the wheel cylinder 24 starts again, the hydraulic pressure of the brake fluid in the wheel cylinder 24 increases, and the braking force applied to the wheel increases.

[0035] The automatic braking operation is performed, for example, when it is necessary to stabilize the posture of the motorcycle 100 during turning or the like, and is an operation that generates a braking force applied to the wheels (specifically, the front wheel 3 or the rear wheel 4) regardless of the operation of the braking operation unit (specifically, the first braking operation unit 11 or the second braking operation unit 13) performed by the rider.

[0036] For example, in a state where the automatic braking operation is being performed, the inlet valve 31 is opened, the outlet valve 32 is closed, the first valve 35 is closed, and the second valve 36 is opened. As a result, the brake fluid is in a state of flowing from the master cylinder 21 to the wheel cylinder 24 via the supply flow path 27 and the sub-flow path 26. In this state, the pump 34 is driven, whereby the hydraulic pressure of the brake fluid in the wheel cylinder 24 increases, and a braking force for braking the wheel is generated.

[0037] [Structure of Hydraulic Control Unit]

[0038] Refer to Figure 3 ~ Figure 5 to describe the structure of the hydraulic control unit 5 of the first embodiment of the present invention in more detail.

[0039] Figure 3 is a perspective view showing the hydraulic control unit 5.

[0040] As Figure 3 shown, the hydraulic control unit 5 includes a hydraulic control mechanism 51, an electronic circuit unit 52, and a housing 53.

[0041] As described above, the hydraulic control mechanism 51 includes a base 511 and components (specifically, the inlet valve 31, the outlet valve 32, the reservoir 33, the pump 34, the first valve 35, and the second valve 36 (refer to Figure 2 )) incorporated in the base 511. In addition, a main flow path 25, a sub-flow path 26, and a supply flow path 27 (refer to Figure 2 ) are formed inside the base 511. The base 511 has, for example, a substantially rectangular parallelepiped shape and is formed of a metal material. A plurality of ports (not shown) communicating with the respective flow paths are formed on the outer surface of the base 511, and are connected to the master cylinder 21 or the wheel cylinder 24 (refer to Figure 2)The connected brake fluid pipes are installed at each port. Additionally, the base body 511 can be formed by a single component or multiple components. Moreover, when the base body 511 is formed by multiple components, each component can also be separately provided on different components.

[0042] The electronic circuit unit 52 includes a substrate 521 and a plurality of electronic components 522a, 522b, 522c mounted on the wiring of the substrate 521. The substrate 521 is a printed circuit board and includes a flat plate-like component of an insulator and the wiring of a conductor applied to the flat plate-like component. The electronic components 522a, 522b, 522c are electrically connected to the wiring of the substrate 521 by soldering or the like, and together with the wiring of the substrate 521, form the electronic circuit of the electronic circuit unit 52. Figure 3 In the figure, for ease of understanding, only three electronic components 522a, 522b, 522c are shown, but in reality, more electronic components are mounted on the wiring of the substrate 521. Additionally, the number of electronic components of the electronic circuit unit 52 is not particularly limited. Hereinafter, without particularly distinguishing each electronic component, it is simply referred to as the electronic component 522. The electronic component 522 only needs to be a component that forms the electronic circuit of the electronic circuit unit 52 and can be any one of active components, passive components, and other components. In addition, the schematic structure of the electronic circuit of the electronic circuit unit 52 will be described later.

[0043] The housing 53 houses the electronic circuit unit 52. The housing 53 has, for example, a substantially square tubular shape with a hollow interior and is formed of resin. The housing 53 is held on the base body 511 by bolt fastening or the like.

[0044] At the housing 53, as a part for mounting a cable connected to an external device (i.e., a device outside the hydraulic control unit 5), a tubular portion 531 and a plurality of connection pins 532 are provided. The tubular portion 531 is formed to extend in a direction from the housing 53 toward the base body 511, and the plurality of connection pins 532 extend in the extending direction of the tubular portion 531 inside the tubular portion 531. The end portions on the substrate 521 side of the plurality of connection pins 532 are connected to the substrate 521 of the electronic circuit unit 52, and the electronic circuit unit 52 is electrically connected to the external device via each connection pin 532.

[0045] A through hole 533 that communicates the inside and outside of the housing 53 is provided in the housing 53. Here, referring to Figure 3 and Figure 4 , the structure around the through hole 533 will be described in detail.

[0046] Figure 4 is a cross-sectional view showing the inside of the housing 53 of the hydraulic control unit 5. Specifically, Figure 4 is showing Figure 3The figure of the A-A cross-section shown in [description], the A-A cross-section is a cross-section that is orthogonal to the substrate 521 and passes through the through-hole 533 of the housing 53.

[0047] As Figure 3 and Figure 4 shown, in the housing 53, a communication path 534 is formed that opens on the side surface of the housing 53 and extends inwardly of the housing 53. The through-hole 533 is disposed opposite to the substrate 521 of the electronic circuit unit 52 accommodated inside the housing 53, so that the internal space of the housing 53 (i.e., the space for accommodating the electronic circuit unit 52) and the communication path 534 communicate with each other. In addition, the positions of the through-hole 533 and the communication path 534 of the housing 53 are not particularly limited to Figure 3 and Figure 4 the example shown in [description].

[0048] At the housing 53, a waterproof and moisture-permeable member 535 for blocking the through-hole 533 is provided. The waterproof and moisture-permeable member 535 is a film-like member formed with a plurality of fine holes, for example, made of Gore-Tex (registered trademark). The waterproof and moisture-permeable member 535 has a large water pressure resistance such that water droplets cannot pass through as long as the water pressure does not become excessively high. Therefore, water droplets cannot easily pass through the waterproof and moisture-permeable member 535, so the intrusion of water from the outside into the housing 53 is suppressed. In addition, gas can pass through the waterproof and moisture-permeable member 535, so the pressure inside the housing 53 is released. In this way, normally (specifically, when it is not during abnormal heating and abnormal smoking described later), the flow of water between the inside and outside of the housing 53 is cut off by the waterproof and moisture-permeable member 535, and gas can flow between the inside and outside of the housing 53 via the waterproof and moisture-permeable member 535.

[0049] Here, when an overcurrent flows through the electronic component 522 of the electronic circuit unit 52 or the like, there is a case where abnormal heating (i.e., excessive heating) occurs inside the housing 53. When abnormal heating occurs inside the housing 53, the temperature of the electronic component 522 rises excessively. And, smoke is generated from the electronic component 522 or components around it (e.g., the substrate 521, etc.). When abnormal smoking occurs with smoke generation inside the housing 53, a part of the components of the smoke S1 gradually adheres to the waterproof and moisture-permeable member 535. As a result, the holes formed in the waterproof and moisture-permeable member 535 are blocked by the smoke S1 (i.e., blockage occurs in the waterproof and moisture-permeable member 535 due to the smoke S1).

[0050] If clogging occurs at the waterproof and moisture-permeable component 535, gas cannot pass through the waterproof and moisture-permeable component 535. The main components that clog the waterproof and moisture-permeable component 535 in the smoke S1 are specifically the composite components of carbon particles and resin. Here, the higher the water pressure resistance of the waterproof and moisture-permeable component 535, the greater the effect of suppressing the intrusion of water from the outside into the housing 53. And when abnormal smoking occurs, the components of the smoke S1 are likely to adhere to the waterproof and moisture-permeable component 535, so clogging is likely to occur at the waterproof and moisture-permeable component 535. From the perspective that clogging is likely to occur at the waterproof and moisture-permeable component 535 during abnormal smoking, the water pressure resistance of the waterproof and moisture-permeable component 535 is preferably 600 mbar or more. For example, preferably, with the waterproof and moisture-permeable component 535, a state with a water pressure resistance of 600 mbar or more can be maintained for at least 30 seconds or more.

[0051] As described above, in the hydraulic control unit 5, during abnormal smoking, due to the smoke S1 generated in the housing 53, clogging occurs at the waterproof and moisture-permeable component 535, and the gas flow between the inside and outside of the housing 53 is cut off by the waterproof and moisture-permeable component 535. Thus, when abnormal heating occurs inside the housing 53, the supply of oxygen from the outside of the housing 53 to the inside can be suppressed, so the ignition and spread of fire inside the housing 53 can be suppressed.

[0052] In the first embodiment, during abnormal smoking, clogging occurs at the waterproof and moisture-permeable component 535 during the period when the initially smoking electronic component 522 among the multiple electronic components 522, that is, the initial smoking electronic component, emits smoke. The initial smoking electronic component is specifically the electronic component 522a among the electronic components 522 that are usually powered. That is, during abnormal smoking, due to the smoke emitted from the electronic component 522a, clogging occurs at the waterproof and moisture-permeable component 535. The initial smoking electronic component, that is, the electronic component 522a, is specifically a decoupling capacitor that suppresses voltage fluctuations of an external power supply (that is, a power supply outside the hydraulic control unit 5) in the electronic circuit unit 52.

[0053] Figure 5 It is a schematic diagram showing the schematic structure of the electronic circuit of the electronic circuit unit 52. In addition, Figure 5 The example shown is only schematically represented for ease of understanding, and the electronic circuit of the electronic circuit unit 52 is actually more complex. Specifically, the electronic circuit of the electronic circuit unit 52 actually includes more components (for example, the motor that drives the pump 34 of the drive braking system 10 (refer to Figure 2 ), etc.).

[0054] At the substrate 521, as connection portions connected to the external power source 6, a positive-side connection portion 523p and a negative-side connection portion 523m are provided. The positive-side connection portion 523p is provided at the end of the positive-side power line, i.e., the positive-side line 524p, formed at the substrate 521, and is connected to the positive side of the external power source 6. Specifically, the positive-side connection portion 523P is the portion of the connection pins 532 (refer to Figure 3 ) of the housing 53 that is connected to the positive side of the external power source 6. The negative-side connection portion 523m is provided at the end of the negative-side power line, i.e., the negative-side line 524m, formed at the substrate 521, and is connected to the negative side of the external power source 6. Specifically, the negative-side connection portion 523m is the portion of the connection pins 532 (refer to Figure 3 ) of the housing 53 that is connected to the negative side of the external power source 6.

[0055] Each electronic component 522 is connected to the positive-side line 524p and the negative-side line 524m. Thereby, power supply from the external power source 6 to each electronic component 522 is achieved. Here, the electronic component 522a is a decoupling capacitor provided between the connection portions (i.e., the positive-side connection portion 523p and the negative-side connection portion 523m) connected to the external power source 6 at the substrate 521 and other electronic components 522 (e.g., the electronic components 522b, 522c). The decoupling capacitor is provided to suppress voltage fluctuations of the external power source 6 as described above. At the electronic component 522a as the decoupling capacitor, overcurrent is more likely to flow compared to other electronic components 522b, 522c, so the electronic component 522a is prone to heat generation and smoke generation.

[0056] Here, with reference to the above-mentioned Figure 3 and Figure 4 , the positional relationship between the electronic component 522a as the initial smoke-generating electronic component and the waterproof and moisture-permeable member 535 will be described.

[0057] As shown in Figure 3 and Figure 4 , the electronic component 522a as the initial smoke-generating electronic component is mounted at the position closest to the waterproof and moisture-permeable member 535 among the electronic components 522 (specifically, the electronic components 522a, 522b, 522c) that are likely to have abnormal heat generation among the plurality of electronic components 522. Specifically, the distances between each electronic component 522 and the waterproof and moisture-permeable member 535 become farther in the order of the electronic components 522a, 522b, 522c. In addition, as the distance between the electronic component 522 and the waterproof and moisture-permeable member 535, the distance from the center position of the electronic component 522 to the center position of the waterproof and moisture-permeable member 535 can be used, or the shortest distance between the electronic component 522 and the waterproof and moisture-permeable member 535 can be used. Figure 3and Figure 4 In the example shown, compared with the case where the position of the electronic component 522a is the position of the electronic component 522b or the electronic component 522c, most of the smoke S1 emitted from the electronic component 522a can be directly supplied to the waterproof and moisture-permeable component 535 without following a circuitous path (for example, a path that reflects off the inner wall of the housing 53).

[0058] In addition, the electronic component 522a, which is the initial smoke-emitting electronic component, is mounted on the surface F1 of the substrate 521 on the side close to the waterproof and moisture-permeable component 535. Specifically, the surface F1 of the substrate 521 is the surface facing the waterproof and moisture-permeable component 535, and the surface F2 of the substrate 521 is the surface on the side opposite to the surface F1. Figure 3 and Figure 4 In the example shown, compared with the case where the electronic component 522a is mounted on the surface F2, most of the smoke S1 emitted from the electronic component 522a can be directly supplied to the waterproof and moisture-permeable component 535 without following a circuitous path.

[0059] In addition, in the above description, an example where the initial smoke-emitting electronic component is a decoupling capacitor (i.e., the electronic component 522a) has been described, but the initial smoke-emitting electronic component is not limited to this example.

[0060] The initial smoke-emitting electronic component can also be, for example, a component other than a decoupling capacitor among the components that are normally powered (such as a resistor, a winding, an integrated circuit (IC), etc.).

[0061] In addition, the initial smoke-emitting electronic component can also be, for example, an electronic component 522 that is not normally required in the electronic circuit unit 52. That is, an electronic component 522 that functions as a conductor that is normally powered but does not contribute to the control operation of the electronic circuit unit 52 and generates heat and smoke in the case of overcurrent generation or the like can be used as the initial smoke-emitting electronic component.

[0062] In addition, the initial smoke-emitting electronic component can also be, for example, an electronic component 522 that is not normally powered and is powered when abnormal heating occurs inside the housing 53. For example, when it is determined that there is abnormal heating based on the detection result of a temperature sensor provided inside the housing 53, the switch mounted on the substrate 521 is operated, whereby the electronic component 522 that is not normally powered can be powered, and the electronic component 522 can be made to emit smoke. An electronic component 522 that is only powered when abnormal heating occurs inside the housing 53 can also be used as the initial smoke-emitting electronic component.

[0063] [Effect of the hydraulic control unit]

[0064] The effects of the hydraulic control unit 5 according to the first embodiment of the present invention will be described.

[0065] In the hydraulic control unit 5, normally, the water circulation between the inside and the outside of the housing 53 is cut off by the waterproof and moisture-permeable member 535, and gas can circulate between the inside and the outside of the housing 53 via the waterproof and moisture-permeable member 535. On the other hand, when abnormal smoking occurs inside the housing 53, due to the smoke S1 generated inside the housing 53, the waterproof and moisture-permeable member 535 becomes clogged, and the gas circulation between the inside and the outside of the housing 53 is cut off by the waterproof and moisture-permeable member 535. Thus, in the case of abnormal heat generation inside the housing 53, the supply of oxygen from the outside to the inside of the housing 53 can be suppressed, so that the ignition and spread of fire inside the housing 53 can be suppressed. Therefore, the safety of the motorcycle 100 can be improved.

[0066] Preferably, in the hydraulic control unit 5, when abnormal smoking occurs, during the period when the first-smoking electronic component 522 among the plurality of electronic components 522, that is, the initial-smoking electronic component, smokes, the waterproof and moisture-permeable member 535 becomes clogged. Thus, in the case of abnormal heat generation inside the housing 53, the supply of oxygen from the outside to the inside of the housing 53 can be suppressed at an early stage. Therefore, the ignition and spread of fire inside the housing 53 can be effectively suppressed.

[0067] Preferably, in the hydraulic control unit 5, the initial-smoking electronic component is an electronic component 522 (specifically, the electronic component 522a) that is normally powered. Thus, compared with the case where an electronic component 522 that is only powered in the case of abnormal heat generation is set as the initial-smoking electronic component, the number of components can be reduced.

[0068] Preferably, in the hydraulic control unit 5, the initial-smoking electronic component is a decoupling capacitor (that is, the electronic component 522a) that suppresses voltage fluctuations of the external power supply 6 in the electronic circuit unit 52. Thus, during the period when the decoupling capacitor, which is particularly likely to smoke among the plurality of electronic components 522 mounted on the substrate 521, smokes, the waterproof and moisture-permeable member 535 can be clogged, so that in the case of abnormal heat generation inside the housing 53, the supply of oxygen from the outside to the inside of the housing 53 can be suppressed at an earlier stage.

[0069] Preferably, in the hydraulic control unit 5, the initial smoke-emitting electronic component is an electronic component 522 that is not normally required at the electronic circuit unit 52. In this case, the main use of the electronic component 522 utilized as the initial smoke-emitting electronic component is to emit smoke in the event of abnormal heat generation within the housing 53, thereby clogging the waterproof and moisture-permeable component 535. Therefore, the performance of smoke emission (such as the temperature at which smoke starts to emit, the amount of smoke emitted, the composition of the generated smoke, etc.) can be used to preferentially select the specifications of the initial smoke-emitting electronic component. Thereby, the waterproof and moisture-permeable component 535 can be appropriately clogged during abnormal smoke emission.

[0070] Preferably, in the hydraulic control unit 5, the initial smoke-emitting electronic component is an electronic component 522 that is not normally powered but is powered during abnormal heat generation when abnormal heat is generated within the housing 53. In this case, the main use of the electronic component 522 utilized as the initial smoke-emitting electronic component is to emit smoke in the event of abnormal heat generation within the housing 53, thereby clogging the waterproof and moisture-permeable component 535. Therefore, the performance of smoke emission can be used to preferentially select the specifications of the initial smoke-emitting electronic component. Thereby, the waterproof and moisture-permeable component 535 can be appropriately clogged during abnormal smoke emission.

[0071] Preferably, in the hydraulic control unit 5, the initial smoke-emitting electronic component is installed at the position closest to the waterproof and moisture-permeable component 535 among the electronic components 522 that have the possibility of abnormal heat generation among the plurality of electronic components 522. Thereby, most of the smoke S1 emitted from the initial smoke-emitting electronic component can be directly directed towards the waterproof and moisture-permeable component 535 without following a circuitous path. Therefore, most of the smoke S1 can be supplied to the waterproof and moisture-permeable component 535 at an early stage. Thereby, the waterproof and moisture-permeable component 535 can be clogged at an early stage. Therefore, the ignition and spread of fire within the housing 53 can be effectively suppressed.

[0072] Preferably, in the hydraulic control unit 5, the initial smoke-emitting electronic component is installed on the surface F1 of the substrate 521 on the side closer to the waterproof and moisture-permeable component 535. Thereby, most of the smoke S1 emitted from the initial smoke-emitting electronic component can be directly supplied to the waterproof and moisture-permeable component 535 without following a circuitous path. Therefore, most of the smoke S1 can be supplied to the waterproof and moisture-permeable component 535 at an early stage. Thereby, the waterproof and moisture-permeable component 535 can be clogged at an early stage. Therefore, the ignition and spread of fire within the housing 53 can be effectively suppressed.

[0073] Preferably, in the hydraulic control unit 5, when abnormal smoke occurs, due to the composite components of carbon particles and resin in the smoke S1, the water-proof and moisture-permeable component 535 becomes blocked. That is, the specifications of the water-proof and moisture-permeable component 535 are selected such that it becomes blocked due to the main components in the smoke S1 that cause blockage of the water-proof and moisture-permeable component 535, namely the composite components of carbon particles and resin. Therefore, the water-proof and moisture-permeable component 535 can be appropriately blocked during abnormal smoke generation.

[0074] Preferably, in the hydraulic control unit 5, the water pressure resistance of the water-proof and moisture-permeable component 535 is 600 mbar or more. Thereby, it is easy to block the water-proof and moisture-permeable component 535 during abnormal smoke generation.

[0075] <Second Embodiment>

[0076] The second embodiment of the present invention will be described.

[0077] [Structure of Hydraulic Control Unit]

[0078] Refer to Figure 6 , and the structure of the hydraulic control unit 5A of the second embodiment of the present invention will be described.

[0079] Figure 6 is a cross-sectional view showing the inside of the housing 53 of the hydraulic control unit 5A. Specifically, Figure 6 is a view showing the cross-section of the hydraulic control unit 5A corresponding to Figure 4 .

[0080] As Figure 6 shown, in the hydraulic control unit 5A of the second embodiment, compared with the above-described hydraulic control unit 5 of the first embodiment, the difference is that it further includes a non-electronic component 54. The non-electronic component 54 is a component that is disposed inside the housing 53 and is not electrically connected to the wiring of the substrate 521. That is, the non-electronic component 54 is a component that does not form an electronic circuit of the electronic circuit unit 52.

[0081] The non-electronic component 54 is mounted at the electronic component 522a of the electronic circuit unit 52 inside the housing 53. Therefore, during abnormal heat generation, as the temperature of the electronic component 522a rises, the non-electronic component 54 is heated by the electronic component 522a. And, due to the excessive rise in the temperature of the non-electronic component 54, the non-electronic component 54 emits smoke.

[0082] In the second embodiment, different from the above-described first embodiment, when abnormal smoking occurs, the non-electronic component 54 is heated by at least one of the plurality of electronic components 522 (specifically, the electronic component 522a), and smokes before the plurality of electronic components 522. During this period, clogging occurs at the waterproof and moisture-permeable component 535. That is, when abnormal smoking occurs, due to the smoke S1 emitted from the non-electronic component 54, clogging occurs at the waterproof and moisture-permeable component 535.

[0083] Here, with reference to Figure 6 , the positional relationship between the non-electronic component 54 and the waterproof and moisture-permeable component 535 will be described.

[0084] As Figure 6 shown, the non-electronic component 54 is located closer to the waterproof and moisture-permeable component 535 than the electronic component 522a that heats the non-electronic component 54 during abnormal smoking. In addition, as the distances between the respective components of the electronic component 522a and the non-electronic component 54 and the waterproof and moisture-permeable component 535, the distance from the center position of each component to the center position of the waterproof and moisture-permeable component 535 can be used, or the shortest distance between each component and the waterproof and moisture-permeable component 535 can be used. Figure 6 In the example shown, compared with the case where the non-electronic component 54 and the electronic component 522a are located farther from the waterproof and moisture-permeable component 535, most of the smoke S1 emitted from the non-electronic component 54 can be directly supplied to the waterproof and moisture-permeable component 535 without following a roundabout path.

[0085] In addition, the non-electronic component 54 is disposed on the side of the housing 53 where the waterproof and moisture-permeable component 535 is located with respect to the substrate 521. Specifically, the non-electronic component 54 is mounted on the electronic component 522a, and the electronic component 522a is mounted on the surface F1 of the substrate 521 that faces the waterproof and moisture-permeable component 535. Figure 6 In the example shown, compared with the case where the non-electronic component 54 is disposed on the side of the housing 53 opposite to the side where the waterproof and moisture-permeable component 535 is located with respect to the substrate 521, most of the smoke S1 emitted from the non-electronic component 54 can be directly supplied to the waterproof and moisture-permeable component 535 without following a roundabout path.

[0086] In addition, in the above description, an example in which the non-electronic part 54 contacts the electronic part 522a has been described, but the positional relationship between the non-electronic part 54 and the electronic circuit unit 52 is not limited to this example. For example, the non-electronic part 54 may also contact an electronic part 522 other than the electronic part 522a (for example, the electronic part 522b or the electronic part 522c). In this case, the non-electronic part 54 is heated by the electronic part 522 in contact with the non-electronic part 54 and smokes. In addition, for example, the non-electronic part 54 may contact the substrate 521 without contacting the electronic part 522, or may not contact the electronic circuit unit 52. In these cases, the non-electronic part 54 is heated by, for example, the electronic part 522 closest to the non-electronic part 54 and smokes.

[0087] [Effect of hydraulic control unit]

[0088] The effect of the hydraulic control unit 5A according to the second embodiment of the present invention will be described.

[0089] In the hydraulic control unit 5A, when abnormal smoking occurs, the non-electronic part 54 is heated by at least one of the plurality of electronic parts 522 (specifically, the electronic part 522a) and smokes before the plurality of electronic parts 522, and during this period, a blockage occurs at the waterproof and moisture-permeable member 535. In this case, the main use of the non-electronic part 54 is to smoke when abnormal heating occurs in the housing 53 and cause a blockage at the waterproof and moisture-permeable member 535. Therefore, the specifications of the non-electronic part 54 can be preferentially selected based on the smoking performance. Thus, the waterproof and moisture-permeable member 535 can be appropriately blocked when abnormal smoking occurs.

[0090] Preferably, in the hydraulic control unit 5A, the non-electronic part 54 is located closer to the waterproof and moisture-permeable member 535 than the above-mentioned at least one electronic part 522 (that is, the electronic part 522a that heats the non-electronic part 54 when abnormal smoking occurs). Thereby, most of the smoke S1 emitted from the non-electronic part 54 can be directly supplied to the waterproof and moisture-permeable member 535 without following a circuitous path. Therefore, most of the smoke S1 can be supplied to the waterproof and moisture-permeable member 535 at an early stage. Thereby, the waterproof and moisture-permeable member 535 can be blocked at an early stage. Therefore, ignition and spread of fire inside the housing 53 can be effectively suppressed.

[0091] Preferably, in the hydraulic control unit 5A, the non-electronic parts 54 are arranged on the side of the waterproof and moisture-permeable component 535 in the housing 53 with respect to the substrate 521. Thus, most of the smoke S1 emitted from the non-electronic parts 54 can be directly supplied to the waterproof and moisture-permeable member 535 without following a circuitous path. Therefore, most of the smoke S1 can be supplied to the waterproof and moisture-permeable component 535 at an early stage. Thereby, the waterproof and moisture-permeable component 535 can be clogged at an early stage. Therefore, the ignition and spread of fire inside the housing 53 can be effectively suppressed.

[0092] The present invention is not limited to the description of the embodiments. For example, only a part of the embodiments may be implemented.

[0093] Description of Reference Numerals

[0094] 1 Body, 2 Handlebar, 3 Front Wheel, 3a Rotor, 4 Rear Wheel, 4a Rotor, 5 Hydraulic Control Unit, 5A Hydraulic Control Unit, 6 External Power Source, 10 Brake System, 11 First Brake Operation Unit, 12 Front Wheel Brake Mechanism, 13 Second Brake Operation Unit, 14 Rear Wheel Brake Mechanism, 21 Master Cylinder, 22 Reservoir, 23 Brake Caliper, 24 Wheel Cylinder, 25 Main Flow Path, 26 Sub-Flow Path, 27 Supply Flow Path, 31 Inlet Valve, 32 Outlet Valve, 33 Accumulator, 34 Pump, 35 First Valve, 36 Second Valve, 51 Hydraulic Control Mechanism, 52 Electronic Circuit Unit, 53 Housing, 54 Non-Electronic Parts, 100 Motorcycle, 511 Substrate, 521 Substrate, 522a Electronic Parts, 522b Electronic Parts, 522c Electronic Parts, 523m Negative Side Connection Port, 523p Positive Side Connection Port, 524m Negative Side Wire, 524p Positive Side Wire, 531 Cylindrical Portion, 532 Connecting Pin, 533 Through-Hole, 534 Communication Path, 535 Waterproof and Moisture-Permeable Component, F1 Surface, F2 Surface, S1 Smoke.

Claims

1. An electronic control unit, which is the electronic control unit (5) of a cross - riding vehicle (100), is characterized in that it includes an electronic circuit unit (52) and a housing (53), the aforementioned electronic circuit unit (52) includes a substrate (521) and a plurality of electronic components (522) mounted at the wiring of the aforementioned substrate (521), the aforementioned housing (53) houses the aforementioned electronic circuit unit (52), a through - hole (533) that connects the inside and outside of the aforementioned housing (53) and a waterproof and moisture - permeable component (535) that plugs the aforementioned through - hole (533) are provided at the aforementioned housing (53), Normally, the flow of water between the inside and outside of the aforementioned housing (53) is cut off by the aforementioned waterproof and moisture - permeable component (535), and gas can flow between the inside and outside of the aforementioned housing (53) via the aforementioned waterproof and moisture - permeable component (535), When abnormal smoke emission occurs inside the aforementioned housing (53), due to the smoke (S1) generated inside the aforementioned housing (53), clogging occurs at the aforementioned waterproof and moisture - permeable component (535), and the flow of gas between the inside and outside of the aforementioned housing (53) is cut off by the aforementioned waterproof and moisture - permeable component (535), During the period when the electronic component (522) that first emits smoke among the aforementioned plurality of electronic components (522), that is, the initial smoke - emitting electronic component, emits smoke during the aforementioned abnormal smoke emission, clogging occurs at the aforementioned waterproof and moisture - permeable component (535), the aforementioned initial smoke - emitting electronic component is the electronic component (522) that is normally powered, the aforementioned initial smoke - emitting electronic component is a decoupling capacitor (522a) that suppresses voltage fluctuations of an external power supply (6) at the aforementioned electronic circuit unit (52).

2. An electronic control unit, which is the electronic control unit (5) of a cross - riding vehicle (100), is characterized in that it includes an electronic circuit unit (52) and a housing (53), the aforementioned electronic circuit unit (52) includes a substrate (521) and a plurality of electronic components (522) mounted at the wiring of the aforementioned substrate (521), the aforementioned housing (53) houses the aforementioned electronic circuit unit (52), a through - hole (533) that connects the inside and outside of the aforementioned housing (53) and a waterproof and moisture - permeable component (535) that plugs the aforementioned through - hole (533) are provided at the aforementioned housing (53), Normally, the flow of water between the inside and outside of the aforementioned housing (53) is cut off by the aforementioned waterproof and moisture - permeable component (535), and gas can flow between the inside and outside of the aforementioned housing (53) via the aforementioned waterproof and moisture - permeable component (535), When abnormal smoke emission occurs inside the aforementioned housing (53), due to the smoke (S1) generated inside the aforementioned housing (53), clogging occurs at the aforementioned waterproof and moisture - permeable component (535), and the flow of gas between the inside and outside of the aforementioned housing (53) is cut off by the aforementioned waterproof and moisture - permeable component (535), During the period when the first-smoking electronic component (522) among the plurality of electronic components (522), i.e., the initial-smoking electronic component, smokes when the aforementioned abnormal smoking occurs, clogging occurs at the waterproof and moisture-permeable component (535). The aforementioned initial-smoking electronic component is the electronic component (522) that is powered during normal operation. The aforementioned initial-smoking electronic component is the electronic component (522) that is powered during normal operation but does not contribute to the control operation of the aforementioned electronic circuit unit (52).

3. An electronic control unit, which is the electronic control unit (5) of a cross-type vehicle (100), characterized in that it includes an electronic circuit unit (52) and a housing (53). The aforementioned electronic circuit unit (52) includes a substrate (521) and a plurality of electronic components (522) mounted on the wiring of the aforementioned substrate (521). The aforementioned housing (53) houses the aforementioned electronic circuit unit (52). A through-hole (533) that connects the inside and outside of the aforementioned housing (53) and a waterproof and moisture-permeable component (535) that plugs the aforementioned through-hole (533) are provided in the aforementioned housing (53). Normally, the flow of water between the inside and outside of the aforementioned housing (53) is cut off by the aforementioned waterproof and moisture-permeable component (535), and gas can flow between the inside and outside of the aforementioned housing (53) via the aforementioned waterproof and moisture-permeable component (535). When abnormal smoking occurs with smoke generation inside the aforementioned housing (53), due to the smoke (S1) generated inside the aforementioned housing (53), clogging occurs at the aforementioned waterproof and moisture-permeable component (535), and the flow of gas between the inside and outside of the aforementioned housing (53) is cut off by the aforementioned waterproof and moisture-permeable component (535). During the period when the first-smoking electronic component (522) among the plurality of electronic components (522), i.e., the initial-smoking electronic component, smokes when the aforementioned abnormal smoking occurs, clogging occurs at the aforementioned waterproof and moisture-permeable component (535). The aforementioned initial-smoking electronic component is the electronic component (522) that is not powered during normal operation and is powered when abnormal heating occurs inside the aforementioned housing (53).

4. The electronic control unit according to any one of claims 1 to 3, characterized in that the aforementioned initial-smoking electronic component is mounted at the position closest to the aforementioned waterproof and moisture-permeable component (535) among the electronic components (522) that have the possibility of abnormal heating among the aforementioned plurality of electronic components (522).

5. The electronic control unit according to any one of claims 1 to 3, characterized in that the aforementioned initial-smoking electronic component is mounted on the surface (F1) of the aforementioned substrate (521) close to the side of the aforementioned waterproof and moisture-permeable component (535).

6. The electronic control unit according to any one of claims 1 to 3, characterized in that when the aforementioned abnormal smoking occurs, clogging of the aforementioned waterproof and moisture-permeable component (535) occurs due to the composite component of carbon particles and resin in the aforementioned smoke (S1).

7. The electronic control unit according to any one of claims 1 to 3, characterized in that the water pressure resistance of the aforementioned waterproof and moisture-permeable component (535) is 600 mbar or more.

8. An electronic control unit, which is the electronic control unit (5) of a cross-riding vehicle (100), is characterized in that it includes an electronic circuit unit (52) and a housing (53), the aforementioned electronic circuit unit (52) includes a substrate (521) and a plurality of electronic components (522) mounted at the wiring of the aforementioned substrate (521), the aforementioned housing (53) houses the aforementioned electronic circuit unit (52), a through-hole (533) that communicates the inside and outside of the aforementioned housing (53) and a waterproof and moisture-permeable component (535) that plugs the through-hole (533) are provided at the aforementioned housing (53), Normally, the flow of water between the inside and outside of the aforementioned housing (53) is cut off by the aforementioned waterproof and moisture-permeable component (535), and gas can flow between the inside and outside of the aforementioned housing (53) via the aforementioned waterproof and moisture-permeable component (535). When abnormal smoking occurs in the aforementioned housing (53), due to the smoke (S1) generated in the aforementioned housing (53), clogging occurs at the aforementioned waterproof and moisture-permeable component (535), and the flow of gas between the inside and outside of the aforementioned housing (53) is cut off by the aforementioned waterproof and moisture-permeable component (535). A non-electronic component (54) that is not electrically connected to the aforementioned wiring is provided in the aforementioned housing (53). During the aforementioned abnormal smoking, the aforementioned non-electronic component (54) is heated by at least one of the aforementioned plurality of electronic components (522) and smokes before the aforementioned plurality of electronic components (522). During this period, clogging occurs at the aforementioned waterproof and moisture-permeable component (535).

9. The electronic control unit according to claim 8, characterized in that the aforementioned non-electronic component (54) is located on the side closer to the aforementioned waterproof and moisture-permeable component (535) compared with the aforementioned at least one electronic component (522).

10. The electronic control unit according to claim 8 or 9, characterized in that the aforementioned non-electronic component (54) is arranged on the side of the aforementioned housing (53) where the aforementioned waterproof and moisture-permeable component (535) is located with respect to the aforementioned substrate (521) as a reference.

11. The electronic control unit according to claim 8 or 9, characterized in that during the aforementioned abnormal smoking, clogging of the aforementioned waterproof and moisture-permeable component (535) occurs due to the composite components of carbon particles and resin in the aforementioned smoke (S1).

12. The electronic control unit according to claim 8 or 9, characterized in that the water pressure resistance of the aforementioned waterproof and moisture-permeable component (535) is 600 mbar or more.

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