JPH11314590A - Antilock brake device for motor scooter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress transmission of heat and vibration of an engine to an electronic control device, by arranging it in a location surrounded by a luggage storage case arranged in a vehicle body rear part and under a seat, rear end part of a vehicle body frame, and a vehicle body cover positioned behind the seat. SOLUTION: An electronic control device 29 is arranged in a location surrounded by a luggage storage case 5 arranged in a vehicle body rear part and under a seat 3, rear end part of a rear part frame 17, and a vehicle body cover 11 positioned behind the seat 3, to be supported through a bracket 33 on the rear part frame 17. By this constitution, since the electronic control device 29 is separated from an engine, a vibration of the engine is damped on the halfway of transmission to the electronic control device 29. Since the luggage storage case 5 and a vehicle body frame 7 are positioned between the device and the engine, heat from the engine is prevented from being transmitted to the electronic control device 29. Further, infiltration of water can be also impeded by the luggage storage case 5, rear part frame 17 and the car body cover 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-lock brake device for a scooter.

[0002]

2. Description of the Related Art Conventionally, an antilock brake device mounted on a vehicle includes a hydraulic control device interposed in a hydraulic system of a hydraulic brake, and an electronic control device for sending a control signal to the hydraulic control device. There is something.

The hydraulic control device comprises a rotary hydraulic pump driven by a motor, and a solenoid valve for switching an oil passage downstream of the hydraulic pump between a brake caliper side and a bypass side. The electronic control unit sends a control signal to the solenoid valve when the rotation of the wheel stops during braking, and at this time, the hydraulic pressure transmitted to the brake caliper side is momentarily reduced and then increased. .
The presence or absence of rotation of the wheel is detected by a wheel speed sensor including an electromagnetic pickup.

[0004]

SUMMARY OF THE INVENTION The inventors have considered mounting the antilock brake device constructed as described above on a scooter. However, in order to realize this, there is a problem in the position where the electronic control device is mounted.
This is because heat and vibration of the engine must be prevented from being transmitted to the electronic control unit, and water or rainwater jumped up by the wheels must not be applied to the electronic control unit. The housing of the electronic control unit is
The heat is formed so that the heat of the internal electronic components is easily dissipated to the outside of the housing, and a waterproof structure cannot be adopted for this.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and it is possible to suppress transmission of heat and vibration of an engine to an electronic control unit and to prevent the water from splashing on a scooter anti-scooter. It is an object to provide a lock brake device.

[0006]

In order to achieve this object, an anti-lock brake device for a scooter according to the present invention comprises an electronic control unit for sending a control signal to a hydraulic control unit, which is provided at a rear part of a vehicle body and below a seat. , A rear end of the vehicle body frame, and a vehicle body cover located behind the seat.

According to the present invention, the vibration of the engine is attenuated while being transmitted to the electronic control device because the electronic control device is located farthest from the engine. In addition, since the luggage storage box and the vehicle body frame are located between the electronic control device and the engine, the heat of the engine is cut off by these members, and the heat transmission path is not transmitted to the electronic control device. Furthermore, it is possible to prevent the water or rainwater splashed by the wheels from splashing on the electronic control device by members located around the electronic control device, that is, the luggage storage box, the body frame and the body cover.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an antilock brake device for a scooter according to the present invention will be described below in detail with reference to FIGS. FIG. 1 is a side view of a scooter equipped with an antilock brake device according to the present invention, and FIG.
Is a plan view showing the structure of the vehicle body frame, FIG. 3 is a side view showing the electronic control device in an enlarged manner, FIG. 4 is a plan view showing the same, FIG. 5 is a plan view showing an enlarged hydraulic control device, and FIG. FIG. 6 is a sectional view taken along line VII-VII of the rear wheel hub portion in FIG. 1.

In these figures, the reference numeral 1 indicates a scooter according to this embodiment. The scooter 1 includes a low-floor footrest 4 between the steering handle 2 and the seat 3, and a luggage storage box 5 and a unit swing type engine 6 below the seat 3.

The steering handle 2 is rotatably supported together with a front fork 9 on a head pipe 8 of a body frame 7 described later. The front fork 9 is a conventionally known telescopic type, and has a front wheel 10 at a lower end.
Is rotatably mounted. The seat 3 has a structure in which a driver and a passenger can sit on the seat 3 and is supported by a vehicle body frame 7 via a bracket (not shown) so that the rear side of the vehicle body rotates vertically with the front end as a fulcrum. Let me.

The luggage storage box 5 is formed so as to open upward and is supported by the vehicle body frame 7, and the upper opening is opened and closed by the seat 3. The scooter 1 includes a vehicle body cover 11 that covers parts below the vehicle body frame 7 and the seat 3, similarly to a conventional scooter. The footrest plate 4 is formed integrally with the vehicle body cover 11.

The body frame 7 has two types of down tubes 12 to extending from the head pipe 8 to the rear side of the body.
15 and a rear frame 17 connected to rear ends of these down tubes 12 to 15 via an engine mounting bracket 16.

The two types of down tubes 12 to 15
Are formed so as to form a pair in the vehicle width direction, respectively, and the down tubes 12, 13 positioned relatively lower than the down tubes 14, 15 on the upper side in the vehicle width direction as shown in FIG. Extends in the front-rear direction. The footrest 4
Are formed so as to cover these four down tubes 12 to 15 from above.

The engine mounting brackets 16 are also formed in pairs in the vehicle width direction, and are connected to each other by a cross member (not shown). As shown in FIGS. 1 and 2, the rear frame 17 is provided on a lower pipe 18 formed in a horizontal U-shape that opens toward the front of the vehicle body in a plan view, and on the lower pipe 18. And an upper pipe 19. The upper pipe 19 is
The lower pipe 18 is formed so as to form a pair in the vehicle width direction.
Is extended so as to overlap the lower pipe 18 in plan view to the rear end.

The unit swing type engine 6 is swingably supported on the engine mounting bracket 16 via a link mechanism (not shown) so that the rear portion swings up and down. In the engine 6, a transmission case main body 21 (see FIG. 7) integrally formed at a left end portion of the crankcase 6a with respect to the vehicle body extends to the rear side of the vehicle body, and a rear end portion of the transmission case main body 21 includes: Crankcase 6a
Support bracket 22 attached to the right side of the vehicle (see FIG. 7)
Thus, the rear wheel 23 is rotatably supported. Further, a cushion unit 24 is interposed between the rear end of the transmission case main body 21 and the rear end of the support bracket 22 and the vehicle body frame 7 as shown in FIG.

As shown in FIG. 7, the rear wheel 23 includes a hub 26 integrally formed with a rim 25, an axle 27 connected to the hub 26 by spline fitting,
6 and a tire 23a (see FIG. 1) mounted on the vehicle. The hub 26 can be detached from the axle 27 to the right side of the vehicle body during maintenance.

The axle 27 is rotatably supported by the transmission case body 21 and the support bracket 22 via a bearing 28. The axle 27 is connected to a gear type speed reducer (not shown) at the left end of the vehicle body. The gear type speed reducer, a centrifugal clutch (not shown), and a V The engine 6 is connected to a crankshaft via a belt-type automatic transmission (not shown). The gear type reduction gear, the centrifugal clutch and the V-belt type automatic transmission are arranged in a space formed by the transmission case body 21 and the transmission case cover 21a attached to the left side of the transmission case body 21 on the vehicle body. I have.
In FIG. 7, the reference numeral 21b located outside the transmission case cover 21a denotes the transmission case cover 21a.
This is an outer cover that covers a from outside.

The scooter 1 employs a hydraulic anti-lock brake device as a brake device for the front wheel 10 and the rear wheel 23. As shown in FIGS. 1 to 4, the anti-lock brake device includes an electronic control unit 29 disposed at a rear portion of a vehicle body and a wheel speed sensor for detecting whether the front wheel 10 or the rear wheel 23 is locked. 30 and 31 and a hydraulic control device 32 disposed below the footrest plate 4.

The electronic control unit 29 sends a control signal to a hydraulic control unit 32 described later when the front wheel 10 or the rear wheel 23 is locked during braking.
As shown in FIG. 2, the vehicle body is disposed in a portion surrounded by the luggage storage box 5 disposed below the seat 3 at the rear of the vehicle body, the rear end of the rear frame 17, and the vehicle body cover 11 located behind the seat 3. The bracket 33 is mounted on the rear frame 17.
Through the support. Whether the front wheel 10 or the rear wheel 23 is locked is detected by wheel speed sensors 30 and 31 provided on the front wheel side and the rear wheel side, respectively. As shown in FIGS. 1 and 2, the electronic control unit 29 and the hydraulic control unit 32 are disposed below the footrest plate 4 and supported by a relatively low down tube 13 on the right side of the vehicle body. 34.

As shown in FIGS. 3 and 4, the bracket 33 for mounting the electronic control unit 29 is provided at the rear end of the upper pipe 19 provided at the rear of the body frame 7 so as to form a pair in the vehicle width direction. The two upper pipes 19 are attached so as to be connected to each other. This bracket 33
Is mounted on the upper pipe 19 by mounting the bracket 33 on the support piece 19a protruding from the upper pipe 19 from the rear side of the vehicle body, and fixing both of them by mounting bolts 35. The bracket 33 holds the electronic control unit 29 by claw pieces 33a projecting from both ends and both sides in the vertical direction, and bands 33b attached to both sides from the rear side of the vehicle body.

In this embodiment, as shown in FIG.
The partition plate 3 of the mudguard 36 is provided below the electronic control unit 29.
6a is provided so that water jumped up by the rear wheel 23 does not reach the electronic control unit 29. Electronic control unit 29, hydraulic control unit 32, and battery 34
The lead wire 29a is connected to the vehicle body and is led out to the left side of the vehicle body through above the partition plate 36a, and is wired to the front side of the vehicle body along the vehicle body frame 7.

In FIG. 3, a component indicated by reference numeral 37 provided on the side of the electronic control unit 29 is a tail lamp of the scooter 1. The tail lamp 37 is supported by a rear frame 17 via a bracket (not shown), and is connected to a rear end of the vehicle body cover 11 via a waterproof structure so that water does not enter the vehicle body cover 11. I have.

The wheel speed sensors 30, 31 are constituted by electromagnetic pickups and are supported by members which do not rotate near the hub 38 of the front wheel 10 and the hub 26 of the rear wheel 23. The detection unit is opposed to the teeth of the provided internal gear. The mounting structure of the wheel speed sensors 30, 31 will be described with reference to FIG. 7 taking the rear wheel side as an example.

The rear wheel speed sensor 31 shown in FIG.
Flange 3 formed on the rear wheel side of transmission case body 21
In FIG. 9, the axis is parallel to the axis of the axle 27, and the rod-shaped detecting portion 31 a at the tip is penetrated so as to protrude from the flange 39 to the right side of the vehicle body, and is fixed by a fixing bolt (not shown). The flange 39 is mounted on the axle 2
7, a wheel speed sensor 31 is mounted on a portion exposed from the outer cover 21b as shown in FIG.

In this embodiment, as shown in FIG. 1, the lower half of the wheel speed sensor 31 is covered by the outer cover 21b when viewed from the left side of the vehicle body. By adopting such a configuration, the wheel speed sensor 3
The provision of 1 prevents not only the appearance of the vehicle body from being impaired, but also prevents the wheel speed sensor 31 from being damaged by a third party.

The hub 26 of the rear wheel 23 has a bottomed cylinder 4 forming an annular space 40 with the flange 39.
1, and the internal gear 42 detected by the detection section 31a is fixed to the inner peripheral portion of the bottomed cylinder 41. The detecting portion 31a faces the inside of the internal gear 42 in the radial direction and faces the tooth tip.

Further, the outer peripheral portion of the flange 39 and the opening edge of the bottomed cylinder 41 are formed in such a shape that a labyrinth seal is formed therebetween. The labyrinth seal is indicated by reference numeral 43 in FIG.

By attaching the wheel speed sensor 31 to the flange 39 of the transmission case main body 21 as described above, the rotation of the rear wheel 23 can be detected by the wheel speed sensor 31. Similarly to the rear wheel side, the front wheel side wheel speed sensor 30 is positioned so that the axis is directed in the vehicle width direction, and a detection unit is provided radially inside an internal gear (not shown) that rotates together with the hub 38. I'm facing.

The hydraulic control unit 32 is interposed in a hydraulic system between hydraulic disc brakes 44 and 45 provided on the right side of the vehicle body of the front wheel 10 and the rear wheel 23 and a master cylinder on the steering handle 2 side. I have. A brake disk of the front wheel side disk brake 44 is indicated by reference numeral 44a in FIG.
A brake caliper is indicated by reference numeral 44b. The brake disc of the rear wheel side disc brake 45 is denoted by reference numeral 45 in FIG.
The brake caliper is indicated by reference numeral 45b in FIGS. 2 and 7. The brake discs 44a,
45a is attached to the front wheels 10 and the hubs 38 and 26 of the rear wheel 23, the front wheel caliper 44b is attached to the front fork 9, and the rear wheel caliper 45b is attached to the support bracket 22.

As shown in FIGS. 5 and 6, the hydraulic control device 32 has a structure in which a motor 46 and a rotary hydraulic pump 47 driven by the motor 46 are integrally combined. Two cross members made of a steel plate are provided at portions of the lower two down tubes 12 and 13 of the four down tubes 12 to 15 of the body frame 7 located below the footrest plate 4. 48,
49, two brackets 50 and 51, and cushion rubber 52 for elastic support.

The two brackets 50 and 51 are formed so as to extend in the front-rear direction of the vehicle body, and the front end and the rear end are fixed to the cross members 48 and 49 with fixing bolts 5.
It is fixed by 3. These brackets 50,5
One of the brackets 50 on the left side of the vehicle body elastically supports the end of the hydraulic pump 47 on the left side of the vehicle body via two cushion rubbers 52. The bracket 51 on the right side of the vehicle body
The right end of the hydraulic pump 47 on the vehicle body is elastically supported via one cushion rubber 52.

The motor 46 and the hydraulic pump 47 are
It is disposed at the center in the vehicle width direction, and is positioned so that the axis is directed in the vehicle width direction. In FIG. 6, what is indicated by reference numeral 54 provided on the side of the hydraulic pump is an igniter of the ignition device.

The hydraulic pump 47 has a conventionally well-known structure for applying a hydraulic pressure to the hydraulic system of the front wheel-side disk brake 44 and the hydraulic system of the rear wheel-side disk brake 45, and increases or decreases the hydraulic pressure of these hydraulic systems. (Not shown) is built-in. The solenoid valve is turned on and off by a control signal sent from the electronic control unit 29.
Is switched. This anti-lock brake device employs a configuration in which when the front wheel 10 or the rear wheel 23 is locked during braking, the solenoid valve is operated to temporarily decrease the hydraulic pressure of the hydraulic system and then increase the hydraulic pressure.

The hydraulic system of the front wheel side disc brake 44 and the hydraulic system of the rear wheel side disc brake 45
A brake pipe made of steel pipe (hereinafter simply referred to as a brake pipe) so that the oil pressure loss is reduced as much as possible between the master cylinder on the side and the hydraulic pump 47.
Is interposed. The hydraulic system of the front wheel-side disc brake 44 is supplied from a hydraulic pump 47 to a brake caliper 44.
A brake pipe made of steel pipe is also interposed in the middle until b. Here, the configuration of the hydraulic piping will be described in more detail.

As shown in FIG. 1, between the hydraulic pump 47 and the front wheel brake master cylinder (not shown) provided on the right side of the steering wheel 2 in the hydraulic system of the front wheel side disc brake 44, Brake hose 55 extending downward from the cylinder to near the lower end of head pipe 8
From the lower end of the brake hose 55 to the hydraulic pump 47.
And a brake hose 57 extending from the hydraulic pump 47 to the vicinity of the down tube 14 located on the upper left side of the vehicle body between the hydraulic pump 47 and the front wheel caliper 44b.
From the tip of the brake hose 57 to the head pipe 8
And a brake hose 59 extending from the front end of the brake pipe 58 to the brake caliper 44b.

On the other hand, in the hydraulic system of the rear wheel side disc brake 45, between the rear wheel brake master cylinder 60 provided on the left side of the steering wheel 2 and the hydraulic pump 47.
A brake hose 61 extending from the master cylinder 60 to the vicinity of the lower end of the head pipe 8 and a brake pipe 62 extending from the lower end of the brake hose 61 to the hydraulic pump 47 are formed by the hydraulic pump 47 and the rear wheel caliper 45b. The space is constituted by a brake hose 63.

The brake hoses 55, 57, 59, 6
Reference numerals 1 and 63 are made of rubber having high pressure resistance and high oil resistance. In this embodiment, the three brake pipes 56, 58, 62 described above are connected to the four down tubes 12
, The rear side of the vehicle body is fixed to the down tube 14 by a holder 64, and the front side of the vehicle body is a lower down tube 12. Are fixed by a holder 65.

Of these brake pipes, two brake pipes 5 on the input side directly connected to the hydraulic pump 47.
As shown in FIGS. 5 and 6, the pipes 6 and 62 are arranged so as to extend in the vicinity of the hydraulic pump 47 so as to extend parallel to the vehicle width direction. In this embodiment, a portion extending in the up-down direction is provided in the middle of a portion extending in the vehicle width direction. More specifically, these brake pipes 56, 62, first horizontal extending portions 56a, 62a extending to the left of the vehicle body from the hydraulic pump 47 to above the motor 46, and the first horizontal extending portions 56a, 62a. A vertically extending portion 56 extending upward from the tip of 62a to substantially the same height as the upper down tube 14;
b, 62b, second horizontal extending portions 56c, 62c extending to the left of the vehicle body from the upper ends of the vertical extending portions 56b, 62b to above the upper down tube 14, and the second horizontal extending portions. There are longitudinally extending portions 56d, 62d extending forward from the vehicle body from the distal ends of the existing portions 56c, 62c. The longitudinally extending portions 56d, 62d are fixed to the down tubes 14, 12 by the holders 64, 65. ing. By arranging the brake pipes 56 and 62 in this manner, three bent portions are formed in the brake pipes 56 and 62 near the hydraulic pump 47 at substantially right angles.

In the antilock brake device configured as described above, the electronic control device 29 is disposed in a portion surrounded by the luggage storage box 5, the rear frame 17, and the vehicle body cover 11, so that the electronic control device 29 Vibration of the engine 6 is attenuated while being transmitted to the electronic control unit 29 when the engine is farthest from the engine 6. Further, since the luggage storage box 5 and the body frame 7 are located between the electronic control unit 29 and the engine 6, the heat transmission path of the engine 6 is cut off by these members, and the heat is transmitted to the electronic control unit 29. Never. Further, it is possible to prevent the water or rainwater splashed by the rear wheel 23 from splashing on the electronic control device 29 by members located around the electronic control device 29, that is, the luggage storage box 5, the rear frame 17, and the vehicle body cover 11. Can be.

[0040]

As described above, according to the present invention, since the electronic control unit is located farthest from the engine, the vibration of the engine is attenuated while being transmitted to the electronic control unit. In addition, since the luggage storage box and the vehicle body frame are located between the electronic control device and the engine, the heat of the engine is cut off by these members, and the heat transmission path is not transmitted to the electronic control device. Further, the water and rainwater splashed up by the rear wheel can be prevented from splashing on the electronic control device by members located around the electronic control device, that is, the luggage storage box, the rear frame, and the vehicle body cover.

Therefore, it is possible to provide an anti-lock brake device for a scooter which can suppress transmission of heat and vibration of the engine to the electronic control unit and which does not splash water.

[Brief description of the drawings]

FIG. 1 is a side view of a scooter equipped with an antilock brake device according to the present invention.

FIG. 2 is a plan view showing a configuration of a vehicle body frame.

FIG. 3 is an enlarged side view of the electronic control device.

FIG. 4 is an enlarged plan view showing the electronic control device.

FIG. 5 is an enlarged plan view showing a hydraulic control device.

FIG. 6 is a perspective view showing a support structure of the hydraulic control device.

FIG. 7 is a sectional view taken along line VV of the hub portion of the rear wheel in FIG. 1;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Scooter, 5 ... Luggage storage box, 6 ... Unit swing type engine, 7 ... Body frame, 11 ... Body cover, 1
7 ... rear frame, 23 ... rear wheel, 29 ... electronic control unit,
33 ... Bracket.

Claims (1)

[Claims] 1. An anti-lock brake device for a scooter, comprising: a hydraulic control device interposed in a hydraulic system of a hydraulic brake; and an electronic control device for sending a control signal to the hydraulic control device. The device is provided at a portion surrounded by a luggage storage box disposed at the rear of the vehicle body and below the seat, a rear end of the vehicle body frame, and a vehicle body cover located behind the seat. Anti-lock brake device for scooter.