JP7328837B2 - Straddle-type vehicle regulator heat insulation structure - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat shield structure for a regulator that regulates the output of a generator driven by an engine of a straddle-type vehicle to a predetermined level.

BACKGROUND ART Straddle-type vehicles such as motorcycles are provided with a generator driven by an engine and a regulator that regulates the output to a predetermined level (for example, Patent Document 1). In Patent Document 1, a regulator is arranged on the upper surface of the crankcase behind the cylinders of the engine.

Japanese Patent No. 4325858

In the arrangement of the regulator as in Patent Document 1, wiring from the generator to the regulator can be shortened. On the other hand, there is a problem of heating the regulator due to heat transfer from the engine. Placing the regulator away from the engine solves the heating problem, but there is concern that the exhaust heat from the regulator will be directed to, for example, the driver.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a regulator heat shielding structure for a saddle type vehicle that can prevent exhaust heat from the regulator from hitting the driver.

In order to achieve the above object, a regulator heat shielding structure for a saddle-ride type vehicle of the present invention heat-insulates a regulator that regulates the output of a generator driven by an engine of a saddle-ride type vehicle to a predetermined level. The regulator is arranged inside a vehicle body cover that covers the sides of the vehicle body, is supported by the vehicle body frame, and is covered with a heat shield cover. The heat shield cover is made of a flat plate made of an elastic material, and is attached to the regulator so as to cover the driver side of the regulator by being bent. Here, the "vehicle body cover" includes a shroud that covers the radiator and the front part of the tank, and a knee grip cover that covers the front and lower part of the seat.

According to this configuration, since the regulator is arranged inside the vehicle body cover, it is easy to separate the regulator from the engine and to protect the regulator from heat transfer from the engine. In addition, since the regulator is covered with the heat shield cover in the driver's side, it is possible to prevent exhaust heat from the regulator from hitting the driver. Furthermore, if the direction not facing the driver is not covered with the heat shield cover, the heat can escape in the direction not facing the driver. As a result, it is possible to prevent heat from remaining inside the vehicle body cover. Further, since the heat shield cover is attached to the regulator by bending a flat plate made of an elastic body, the heat shield cover can be easily assembled.

In the present invention, the flat plate has a first portion and a second portion with the bent portion as a boundary, the first portion is formed with a first slit, the second portion is formed with a second slit, and The first and second slits may be fitted in a first support piece that supports the upper portion of the regulator on the vehicle body frame. According to this configuration, by fitting the first support pieces into the first and second slits, the heat shield cover can be easily attached to the regulator without tools.

In this case, a third slit may be further formed in the second portion, and the third slit may be fitted into a second support piece that supports the lower portion of the regulator on the vehicle body frame. According to this configuration, since the heat shield cover is fitted to the regulator at the upper and lower portions, the heat shield cover can be attached stably.

In this case, the regulator may be supported by the vehicle body frame via a bracket, and the first support piece and the second support piece may be formed on the bracket. According to this configuration, the heat shield cover is attached to the sturdy bracket, so that the heat shield cover is firmly supported. Further, the regulator and the heat shield cover can be easily attached to the vehicle body by attaching the regulator and the heat shield cover to the bracket to form a sub-assembly and then attaching the bracket to the vehicle body frame.

When a first slit and a second slit are formed in the flat plate, the first slit is a vertically long hole whose longitudinal direction is parallel to the bent portion, and the second slit is a straight hole. It may be a horizontally elongated hole whose longitudinal direction is a direction orthogonal to the bent portion. According to this configuration, the vertically elongated hole of the first slit is fitted into the first support piece of the regulator, and the horizontally elongated hole of the second slit is fitted into the first support piece, thereby attaching the heat shield cover to the regulator without tools. Easy to put on.

In the present invention, the regulator may be disposed forwardly and downwardly of the driver's seat and forwardly and upwardly of the engine, and the heat shield cover may cover the regulator above and behind. According to this configuration, since it is arranged in front and above the regulator engine, it is easy to protect the regulator from the heat transfer of the engine. In addition, since the upper rear portion of the regulator is covered with the heat shielding cover, it is possible to prevent exhaust heat from the regulator from hitting the driver.

In the present invention, a side stand for parking the vehicle body in an inclined state may be provided on one side in the width direction of the vehicle body, and the regulator may be arranged on the other side in the width direction of the vehicle body. The opposite side of the side stand is the upper side when parked, so the heat environment is severe, but the heat dissipation is good. In addition, since the regulator is placed on the opposite side of the side stand, which has a severe thermal environment, electronic components that are vulnerable to heat can be placed on the side stand side.

According to the regulator heat shielding structure for a straddle-type vehicle of the present invention, it is possible to prevent exhaust heat from the regulator from hitting the driver, while allowing heat to escape in a direction not facing the driver.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a side view showing a motorcycle, which is a type of straddle-type vehicle, provided with a regulator heat shielding structure according to a first embodiment of the present invention; It is a front view showing the main part of the same motorcycle. It is a side view showing the regulator attached to the motorcycle. It is the figure which looked at the same regulator from the vehicle body inside. It is a top view which shows the thermal insulation cover of the same regulator. It is an expanded view which shows the mounting structure of the same regulator and the same heat shield cover.

Preferred embodiments of the present invention will be described below with reference to the drawings. In this specification, the terms "left side" and "right side" refer to "left side" and "right side" as seen from the driver in the vehicle.

FIG. 1 is a side view showing a motorcycle, which is a type of straddle-type vehicle, provided with a regulator heat shield structure according to an embodiment of the present invention. In FIG. 1, the body frame FR of the motorcycle of this embodiment has a main frame 1 forming a front half and a rear frame 2 forming a rear half. As shown in FIG. 2, a pair of left and right main frames 1 are provided.

As shown in FIG. 1, the main frame 1 has an upper frame piece 1a extending obliquely downward rearward from the upper portion of the head pipe 4, and a lower frame piece 1b extending obliquely downward rearward from the lower portion of the head pipe 4. there is The upper frame piece 1a extends rearward from above the engine E, which is a drive source, and supports the rear portion of the engine E. As shown in FIG. The lower frame piece 1b extends in front of the engine E and supports the front part of the engine E. As shown in FIG. The rear frame 2 is connected to the rear portion of the upper frame piece 1a.

The upper frame piece 1a and the lower frame piece 1b are connected by first and second connecting members 1c and 1d. The first connecting member 1c extends substantially vertically and connects the front end portion of the upper frame piece 1a and the front portion of the lower frame piece 1b. The second connecting member 1d extends substantially in the front-rear direction and connects the front-rear middle portion of the upper frame piece 1a and the front portion of the lower frame piece 1b. The upper frame piece 1a and the lower frame piece 1b are reinforced by the first and second connecting members 1c and 1d. The structure of the vehicle body frame FR is not limited to this embodiment.

A front fork 6 is rotatably supported by a head pipe 4 at the front end of the main frame 1 via a steering shaft (not shown). A front wheel 8 is attached to the lower end of the front fork 6 . A handle 10 is attached to the upper end of the front fork 6 .

A swing arm bracket 12 is provided at the rear end of the main frame 1 . A front end of a swing arm 13 is supported by the swing arm bracket 12 so as to be vertically swingable about a pivot shaft 14 . A rear wheel (not shown) is attached to the rear end of the swing arm 13 .

The engine E is mounted below the main frame 1 and in front of the swing arm bracket 12 . Rear wheels (not shown) are driven by the engine E via a power transmission member (not shown) such as a chain.

The engine E of this embodiment is a water-cooled multi-cylinder engine. The four-cycle engine E has a crankcase 16 that rotatably supports a crankshaft 15 , a cylinder 18 that projects upward from the crankcase 16 , and a cylinder head 20 that is attached to the top of the cylinder 18 . A radiator 22 is arranged in front of a cylinder head 20 of the engine E. As shown in FIG. The radiator 22 cools the cooling water of the engine E with running wind. A generator 24 is connected to the left end of the crankshaft 15 . The generator 24 is driven by the engine E and supplies electric power to the electrical components of the vehicle.

An intake system device is connected to an intake port 20 a on the rear surface of the cylinder head 20 . The intake system equipment supplies external air to the engine E as intake air. An exhaust pipe 26 is connected to an exhaust port (not shown) on the front surface of the cylinder head 20 . The exhaust gas from the engine E that has flowed into the exhaust pipe 26 is collected below the engine E, muffled by a muffler 28 behind and below the engine E, and discharged to the outside.

A fuel tank 30 is arranged on the upper portion of the main frame 1, and a driver's seat 32 on which a driver sits is attached to the rear frame 2. - 特許庁A side stand 34 is provided on the left side, which is one side in the width direction of the vehicle body, so that it can be raised and lowered. The side stand 34 parks the vehicle body in an inclined state.

A pair of left and right resin shrouds 36 are provided in front of and above the cylinder head 20 of the engine E. As shown in FIG. The shroud 36 covers the area from the radiator 22 to the front portion of the fuel tank 30 from the outside. Specifically, as shown in FIG. 2, the shroud 36 has an outer shroud 36a and an inner shroud 36b. The outer shroud 36a covers the vehicle body from the outside. The inner shroud 36b is attached to the inner side of the outer shroud 36a in the vehicle width direction, closes the inner opening of the outer shroud 36a, and guides the running wind to the radiator 22. As shown in FIG. 2, the inner shroud 36b of the shroud 36 on the right side is omitted.

As shown in FIG. 1 , a pair of left and right knee grip covers 38 made of resin are provided behind the shroud 36 . A knee grip cover 38 extends rearward from the upper rear edge of the shroud 36 to the driver's seat 32 and covers the gap between the fuel tank 30 and the main frame 1 . The knee grip cover 38 is positioned in front and below the driver's seat 32, and is a portion held between the legs of the driver during running. These shroud 36 and knee grip cover 38 are a kind of "body cover" that covers the sides of the vehicle body.

A regulator 40 is located inside the shroud 36 . As shown in FIG. 2 , the regulator 40 is arranged inside the shroud 36 on the right side in the vehicle width direction opposite to the side stand 34 . Shroud 36 regulates the output of generator 24 of FIG. 1 to a predetermined voltage level. The regulator 40 is arranged below the front of the driver's seat 32 and above the front of the cylinder head 20 of the engine E. As shown in FIG.

Regulator 40 is supported by vehicle body frame FR via bracket 42 . The details of the structure of bracket 42 and the support structure of regulator 40 will be described later. As shown in FIG. 2, the regulator 40 has cooling fins 40a extending in the front-rear direction and harness mounting portions 40b. A plurality of cooling fins 40a are arranged side by side in the vertical direction. The harness attachment portion 40b is a connector that is provided on the lower surface of the regulator 40 and opens downward. A harness is connected to the harness mounting portion 40b, and the output of the generator 24 (FIG. 1) is input, and the power of the voltage regulated by the regulator 40 is output, and various lamps, sensors, meters, and other electrical components are connected. supplied.

The regulator 40 is covered with a heat insulating cover 44 . The heat shielding cover 44 shields heat from the regulator 40 . As shown in FIG. 3, the heat (exhaust air W) of the regulator 40 tries to flow in the direction of the cooling fins 40a, that is, in the front-rear direction. In this embodiment, a harness (not shown) is connected to the harness attachment portion 40b from below, so the regulator 40 is arranged so that the cooling fins 40a extend in the front-rear direction.

Exhaust air W from the regulator 40 flows from the shroud 36 through the inside of the knee grip cover 38 toward the lower side of the driver's seat 32 (FIG. 1) if the heat shield cover 44 is not provided. The heat shielding cover 44 blocks the exhaust air W. In this embodiment, the heat insulating cover 44 covers the regulator 40 from above and behind. In FIG. 3, the outer shroud 36a is omitted, and the heat shielding cover 44 is drawn with a chain double-dashed line.

As shown in FIG. 2, in the present embodiment, the heat shield cover 44 covers the rear, upper, left and right sides of the regulator 40, and is open in front and below. However, it is not necessary to cover both sides. In other words, only the heat flowing to the rear driver is blocked, and the heat is released forward and downward, mainly downward. This prevents heat from staying inside the shroud 36 .

The heat shielding cover 44 is made of a flat plate made of an elastic material. In other words, the heat shield cover 44 consists of a single flexible sheet. The heat shielding cover 44 is made of, for example, CR rubber (chloroprene rubber) or EPDM (ethylene-propylene-diene rubber). However, the material of the heat shield cover 44 is not limited to this. The heat shield cover 44 is formed by folding a single sheet and is attached to the regulator 40 so as to cover the direction facing the driver, that is, cover the side facing the driver and open on the opposite side.

As shown in FIG. 5, the heat shield cover 44 made of a flat plate is divided into a first portion 46 (left portion in FIG. 5) and a second portion 48 (right portion in FIG. 5) with a straight bent portion 45 as a boundary. have. A first slit 50 is formed in the first portion 46 and a second slit 52 is formed in the second portion 48 . The first slit 50 is a vertically long hole whose longitudinal direction is parallel to the bent portion 45 . The second slit 52 is a horizontally elongated hole whose longitudinal direction is the direction perpendicular to the bent portion 45 . However, the shape of the first and second slits 50, 52 is not limited to this.

Furthermore, a third slit 54 is formed in the second portion 48 . The third slit 50 is a horizontally elongated hole whose longitudinal direction is the direction orthogonal to the bent portion 45 . The shape of the third slits 50, 54 is not limited to this. In this embodiment, the first and second slits 50 and 52 are formed near the bent portion 45 in the upper portion of the heat shield cover 44 . A third slit 54 is formed in a portion of the second portion 48 below the second slit 52 .

Below, the support structure and mounting procedure of the regulator 40 and the heat shield cover 44 of this embodiment will be described. FIG. 4 shows the regulator 40 viewed from the back side. "Front, rear, top, and bottom" in the drawing refer to "front, rear, top, and bottom" when the regulator 40 is attached to the vehicle body.

The regulator 40 is attached to the bracket 42 with fastening members 55 such as bolts. The bracket 42 is made of sheet metal and has first screw holes 56, 56 formed in its front and rear ends. In this embodiment, the first screw hole 56 is configured with a weld nut.

A first support piece 58 that protrudes above the regulator 40 is formed on the upper portion of the bracket 42 . The first support piece 58 is formed with a first insertion hole 58a facing in the lateral direction of the vehicle body. The first support piece 58 is provided on the bracket 42 by integral formation, for example. A second support piece 60 that protrudes below the regulator 40 is formed on the lower portion of the bracket 42 . A pin 62 projecting downward is provided on the second support piece 60 . Specifically, the lower end of the second support piece 60 is bent toward the inside of the vehicle body, and a through hole 60b is formed in the bent engagement portion 60a. The pin 62 is fitted in this through hole 60b.

As shown in FIG. 6, a first support fitting 62 is provided on the upper frame piece 1a of the right main frame 1. As shown in FIG. The first support fitting 62 is formed by bending a sheet metal into a U shape, and is fixed to the outer surface of the upper frame piece 1a by welding. A second screw hole 62a facing in the vehicle width direction is formed in the first support fitting 62 . In this embodiment, the second screw hole 62a is configured with a weld nut.

A second support metal fitting 64 is provided on the first connecting member 1c of the main frame 1 on the right side. Specifically, the second support fitting 64 is provided below the right first connecting member 1c. The second support fitting 64 is formed by bending a sheet metal into a U shape, and is fixed to the outer surface of the first connecting member 1c by welding. The second support fitting 64 is formed with a second insertion hole 64a facing in the vertical direction.

Next, the procedure for attaching the heat shield cover 44 will be described with reference to FIG. In FIG. 6 , the heat shielding cover 44 before attachment is indicated by a two-dot chain line, and the heat shielding cover 44 after attachment is indicated by a solid line. First, the third slit 54 of the heat shield cover 44 is fitted into the second support piece 60 of the bracket 42 of the regulator 40 from below.

Next, the first portion 46 of the heat shield cover 44 is bent along the second bending line L2 (FIG. 5) while bending along the bending portion 45, that is, the first bending line L1 (FIG. 5). The first slit 50 is fitted into the first support piece 58 of the regulator 40 . Next, the second portion 48 is bent along the first bending line L1 (FIG. 5) and along the third bending line L3 (FIG. 5) so that the second slit 52 of the second portion 48 is aligned with the first opening of the regulator 40. It is fitted in the support piece 58 . However, the second slit 52 may be fitted first, and the first slit 50 may be fitted later.

As described above, the heat insulating cover 44 is attached to the regulator 40, and a sub-assembly including the regulator 40, the bracket 42 and the heat insulating cover 44 is configured. In this state, the regulator 40 is covered by the portion of the first portion 46 above the second bending line L2 (FIG. 5), and the regulator 40 is covered by the portion below the second bending line L2 (FIG. 5). Covered posteriorly and laterally. Further, the inside of the regulator 40 is covered by the portion of the second portion 48 below the third bending line L3 (FIG. 5).

Next, this sub-assembly is attached to the vehicle body. First, the lower portion of the regulator 40 is attached to the main frame 1 via the first elastic body 65 . More specifically, the stepped tubular first elastic body 65 is fitted from above into the second insertion hole 64a of the second support metal fitting 64 of the main frame 1 . Furthermore, the pin 62 of the second support piece 60 of the bracket 42 is fitted into the hollow hole 65 a of the first elastic body 65 . Thereby, the lower part of the sub assembly is supported by the main frame 1 .

Subsequently, the upper portion of the regulator 40 is attached to the main frame 1 via the second elastic body 66 . Specifically, a stepped cylindrical second elastic body 66 having the same shape as the first elastic body 65 is mounted in the first insertion hole 58 a of the first support piece 58 of the bracket 42 . The attachment of the second elastic body 66 is performed before the lower portion of the regulator 40 is attached to the main frame 1 . A fastening member 69 such as a bolt is inserted through the hollow hole 66a of the second elastic body 66 from the outside (right side) in the vehicle width direction and tightened to the second screw hole 62a of the first support metal fitting 62 of the main frame 1. Thereby, the upper part of the sub assembly is supported by the main frame 1 . As described above, the sub-assembly consisting of the regulator 40, the bracket 42 and the heat insulating cover 44 is attached to the vehicle body.

Next, the action of the heat shield structure of this embodiment will be described. When the engine E in FIG. 1 starts, the generator 24 is driven in conjunction with it. The output of generator 24 is input to regulator 40 and regulated to a predetermined voltage level by regulator 40 . As shown in FIG. 2, the rear and upper sides of the regulator 40 are covered with the heat shield cover 44, so the heat (exhaust air) W1 from the regulator 40 flows forward and downward. The arrow W shown in FIGS. 1 and 3 indicates the flow of heat (exhaust air) when the heat shield cover 44 is not provided. It flows in the direction of arrow W1 in FIG.

In the above configuration, since the regulator 40 is arranged inside the shroud 36, it is easy to separate the regulator 40 from the engine E and to protect the regulator 40 from the heat transfer of the engine E. Also, the appearance is improved because the regulator 40 is not exposed to the outside.

Further, since the rear and upper sides of the regulator 40 on the side of the driver are covered with the heat shielding cover 44, the exhaust heat W1 of the regulator 40 can be prevented from hitting the driver. Furthermore, since the lower front portion on the side opposite to the driver is not covered with the heat shielding cover 44, the heat W1 can be released to the lower front portion. Thereby, it is possible to prevent heat from remaining inside the shroud 36 . Moreover, since the heat shield cover 44 is attached to the regulator 40 by bending a flat plate made of an elastic body, the heat shield cover 44 can be easily assembled.

As shown in FIG. 6, the first portion 46 of the heat shield cover 44 is formed with a first slit 50 formed of a vertically elongated hole, and the second portion 48 is formed with a second slit 52 formed of a horizontally elongated hole. Two slits 50 and 52 are fitted in the first support piece 58 of the bracket 42 . Thereby, the heat insulating cover 44 can be easily attached to the regulator 40 without tools.

Further, a third slit 54 is formed in the second portion 48 and the third slit 54 is fitted in the second support piece 60 of the bracket 42 . As a result, the heat shield cover 44 is fitted to the bracket 42 of the regulator 40 at the upper and lower portions, so that the heat shield cover 44 can be attached stably. Moreover, since the heat shielding cover 44 is attached to the sturdy bracket 42, the heat shielding cover 44 is strongly supported. Further, the regulator 40 and the heat shield cover 44 can be easily attached to the vehicle body by attaching the regulator 40 and the heat shield cover 44 to the bracket 42 to form a sub-assembly and then attaching the bracket 42 to the main frame 1 .

As shown in FIG. 1, regulator 40 is located on the right side opposite side stand 34 . The opposite side of the side stand 34 is the upper side when the vehicle is parked, so the heat environment is severe. While the regulator 40 is placed on the opposite side of the side stand 34, which has such a severe thermal environment, to improve heat dissipation, heat-sensitive electronic components such as fuses and relay boxes are placed on the side stand 34 side to suppress high temperatures. can do.

The present invention is not limited to the above embodiments, and various additions, changes, or deletions are possible without departing from the scope of the present invention. For example, in the above embodiment, the heat shielding cover 44 covers the upper side and the rear side of the regulator 40 , but the heat shielding cover 44 may be provided so as to cover the driver side of the regulator 40 . Also, although the regulator 40 is arranged inside the shroud 36, it may be arranged inside the knee grip cover 38 as well. Furthermore, the regulator 40 may be arranged on the left side of the vehicle body instead of the right side.

Although the first support piece 58 and the second support piece 60 are formed on the bracket 42 in the above embodiment, one or both of them may be formed on the regulator 40 . Moreover, the regulator heat insulation structure of the present invention can also be applied to straddle-type vehicles other than motorcycles, such as tricycles and four-wheel buggies. Accordingly, such are also included within the scope of this invention.

24 generator 32 driver's seat 34 side stand 36 shroud (body cover)
40 regulator 42 bracket 44 heat shield cover 45 bent portion 46 first portion 48 second portion 50 first slit (longitudinal hole)
52 Second slit (horizontally long hole)
54 Third slit 58 First support piece 60 Second support piece E Engine FR Body frame

Claims (6)

A heat shield structure for a regulator for regulating the output of a generator driven by an engine of a straddle-type vehicle to a predetermined level,
The regulator is arranged inside a vehicle body cover that covers the sides of the vehicle body, is supported by the vehicle body frame and is covered with a heat shield cover,
The heat shield cover is made of a flat plate made of an elastic material, and is attached to the regulator so as to cover the driver side of the regulator by being bent,
The flat plate has a first portion and a second portion bounded by a first bending line,
The first part has an upper first part and a lower first part bordering on the second folding line,
The second part has an upper second part and a lower second part bordering on the third folding line,
A first slit is formed in the upper first portion, and a second slit is formed in the upper second portion,
A regulator heat shield structure for a straddle-type vehicle, wherein the first and second slits are fitted in a first support piece that supports the upper portion of the regulator to the vehicle body frame. 2. The regulator heat shield structure according to claim 1 , further comprising a third slit formed in the lower second portion,
A regulator heat shield structure for a straddle-type vehicle, wherein the third slit is fitted in a second support piece that supports the lower portion of the regulator to the vehicle body frame. 3. The regulator heat shield structure according to claim 2 , wherein the regulator is supported by the vehicle body frame via a bracket,
The regulator heat shield structure for a straddle-type vehicle, wherein the first support piece and the second support piece are formed on the bracket. 4. The heat insulating structure for the regulator according to claim 1 , wherein the first slit is a vertically elongated hole whose longitudinal direction is parallel to the first bending line , and the second slit is a regulator heat shield structure for a straddle-type vehicle, which is a laterally elongated hole whose longitudinal direction is perpendicular to the straight first bending line ; The regulator heat shield structure according to any one of claims 1 to 4 , wherein the regulator is arranged below the front of the driver's seat and above the front of the engine,
The heat shielding cover is a regulator heat shielding structure for a straddle-type vehicle, wherein the heat shielding cover covers above and behind the regulator. 6. The regulator heat shielding structure according to any one of claims 1 to 5 , wherein a side stand for parking the vehicle body in an inclined state is provided on one side in the width direction of the vehicle body,
A regulator heat shield structure for a straddle-type vehicle, wherein the regulator is arranged on the other side in the width direction of the vehicle body.

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