JPH11291988A - Electric drive device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the air-tightness of an electric drive device, facilitate the maintenance and inspection works, accomplish a small-size construction, and provide an inspection aperture at a low cost. SOLUTION: A split drive case 102 consists of case portions 100 and 101, and inside the case, a motor 103 and a gear mechanism 104 for the motor are installed. In this electric drive device 38, the case portions are fastened together with a sealing member 105 interposed between their joining surfaces, and a partitioning plate 110 is installed in the position of the joining surfaces, wherein the motor is located in the compartment 120 formed from this partitioning plate and inside the case portion 100 while the gear mechanism is located in the compartment 140 formed from the partitioning plate and inside the other case portion. A grommet penetrated by wirings is installed in the position of the joining surface of the case portions and is provided with an inspection aperture to admit insertion of an inspecting member for inspecting the air- tightness of inside the drive case 102.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric drive device used as a drive source for various devices of a small boat, for example.

[0002]

2. Description of the Related Art For example, a small boat usually called a water vehicle is provided with various devices, and an electric driving device is provided as a drive source of the various devices. In this electric drive device, for example, a drive case is constituted by a pair of divided case bodies, and an electric motor and a gear mechanism for shifting and outputting the power of the electric motor are arranged inside the drive case. There is.

[0003]

Such an electric drive device is used as a drive source for driving a variable exhaust valve of an exhaust control device provided in, for example, an engine disposed on a hull. Although it is arranged inside the hull, since the hull may be splashed with water, for example, it rolls over, it requires reliable airtightness, is easy to perform maintenance and inspection, and is arranged in a narrow hull. Therefore, miniaturization is required.

In the electric drive device, an inspection member is inserted from the outside of the electric case to inspect the airtightness of the inside. When a hole for inserting the inspection member is formed in the electric case itself, a special hole is formed. Processing is costly due to processing, and furthermore, it is necessary to weld or bond to close the hole after inspection, and the waterproof structure is complicated and costly.

[0005] The present invention has been made in view of such a point, and the invention according to claim 1 has improved airtightness,
An object of the present invention is to provide an electric drive device that is easy to maintain and inspect and that is small in size. According to the second aspect of the present invention, it is possible to provide an inspection hole for inserting an inspection member for inspecting the inside airtightness at low cost, and the waterproof structure after the inspection is simple and reliable. It is an object to provide an electric drive device.

[0006]

Means for Solving the Problems In order to solve the above problems and achieve the object, the present invention has the following constitution.

According to the first aspect of the present invention, a driving case is constituted by a pair of divided case bodies, and inside the driving case,
In an electric drive device in which an electric motor and a gear mechanism for shifting and outputting the power of the electric motor are arranged, the pair of split case bodies are fastened and fixed with a seal member interposed therebetween, and the pair of split case bodies are fixed. A partition plate is disposed at the position of the mating surface of the divided case body, and the electric motor is disposed in a room formed by the partition plate and the inside of one of the divided case bodies. An electric drive device, wherein the gear mechanism is arranged in a room formed by the inside.

According to the first aspect of the present invention, the airtightness is improved by tightening and fixing the pair of divided case bodies with the sealing member interposed between the mating surfaces. In addition, since the inside is partitioned by a partition plate disposed at the position of the mating surface of the pair of divided case bodies, the electric motor is disposed in one room, and the gear mechanism is disposed in the other room, one of the divided cases is removed. Thus, maintenance and inspection of the electric motor can be performed, and maintenance and inspection of the gear mechanism can be performed by removing the other split case, thereby improving maintainability.

According to a second aspect of the present invention, a driving case is constituted by a pair of divided case bodies, and inside the driving case,
In an electric drive device in which an electric motor and a gear mechanism for shifting and outputting the power of the electric motor are arranged, the electric drive device is fastened and fixed by interposing a seal member on a mating surface of the pair of divided case bodies, and A grommet penetrating the wiring is provided at the position of the mating surface of the divided case body, and an inspection hole capable of inserting an inspection member for inspecting the airtightness of the inside of the drive case is formed in the grommet. Electric drive device ".

According to the second aspect of the present invention, an inspection member for inspecting the airtightness of the inside of the drive case can be inserted into the grommet provided at the mating surface of the pair of divided case bodies. Since the holes are formed, it is low cost and can be formed together with the wiring holes penetrating the wiring,
In addition, it can be shared with the wiring hole, and can be easily closed by the plug after inspection, and the waterproof structure is simple and reliable.

[0011]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an electric drive device according to an embodiment of the present invention. 1 to 3 show a small boat to which the electric drive device of the present invention is applied, FIG. 1 is a side view of the small boat, FIG. 2 is a plan view of the small boat, and FIG. 3 is a line III-III in FIG. It is a sectional front view along.

1 is a small boat usually called a water vehicle. This small boat 1 has a hull 2, an engine 3 housed and mounted in an engine room 2a of the hull 2, and an engine disposed in a propulsion unit room 2b. And a propulsion unit 4 driven by the motor 2.

The hull 2 is made of fiber reinforced resin, and is a substantially hermetic box type having a cover plate-like deck 6 mounted on a so-called bathtub-like hull 5 and joined together by a gunnel 7. The interior of 2 is defined by a bulkhead 2c into an engine room 2a and a propulsion unit room 2b. A fuel tank 8a and a lubricating oil tank 8b are arranged in the engine room 2a.

A steering handle 9 is disposed above the fuel tank 8a of the deck 6, and a saddle type seat 10 divided into a front seat 10a and a rear seat 10b is provided behind the steering handle 9. It is mounted detachably. A foot rest 6b is formed on the left and right sides of the saddle type seat 10. The footrest 6b is provided on the deck 6 so that the occupant can rest his / her feet on the seat 10 with the knees bent.
Is stepped downward in a groove shape. By standing on the footrest 6b, the weight can be easily shifted.

A rear compartment 11 is provided below the rear seat 10b, and the upper end opening of the rear compartment 11 is opened and closed by attaching and detaching the rear seat 10b. Further, a front compartment 12 is provided at the front of the hull 2, and an upper end opening of the front compartment 12 has a maintenance hatch 6 rotatably attached to the deck 6 by a front hinge.
It is opened and closed with a.

A maintenance opening 6c is formed below the front seat 10a of the deck 6, and the maintenance opening 6c is opened and closed by attaching and detaching the front seat 10a. When the front seat 10a is removed, the engine 3 can be inspected and maintained through the maintenance opening 6c. The propulsion unit 4 is provided with a propulsion duct 13 having a suction port that closes to the bottom of the hull 2 at the rear part of the hull 2, and a steering nozzle 14 that adjusts the traveling direction of the vessel at a discharge port that opens behind the propulsion duct 13. Attach and install the propulsion duct 13
The impeller 15a is disposed in the middle of the engine 3, and the impeller shaft 15b of the impeller 15a is connected to the rear end of the crankshaft of the engine 3 via the coupling 16.

The engine 3 is mounted on a reinforcing sheet 5b affixed to the inner surface of the bottom 5a of the hull 2 via a bracket 22a and an engine mount 22b made of an elastic member. It is inclined about 30 degrees to the right with respect to the line V. The engine 3 is a water-cooled two-cycle parallel two-cylinder engine, and its crankcase 17
Above, a separate and independent cylinder block 18 for each cylinder,
The cylinder head 19 and the head cover 20 are sequentially laminated and connected.

A carburetor 34 having a fuel pump and an acceleration pump is connected to the crankcase 17.
An intake silencer 35 is connected to the upstream side of. An exhaust passage 48 is connected to the cylinder block 18. The exhaust passage 48 is used to transfer exhaust gas from each cylinder from the exhaust manifold 49 to the exhaust expansion pipe 50 and the rubber joint 5.
1. It is configured to be discharged into the water at the rear of the hull through a water lock 52 and a rear exhaust pipe 53. A catalyst 57 is disposed in the exhaust expansion pipe 50.

The engine 3 is provided with an exhaust control device 36 for variably controlling the exhaust timing. The exhaust control device 36 includes an exhaust control valve 37 attached to an exhaust port side formed on the inclined side of the engine 3 and an inner surface of a side wall 6d of the hull 2 located on the engine inclined side of a side wall 6d constituting the engine room 2b. Drive 38 mounted on the vehicle
And a transmission mechanism 39 for transmitting the rotational movement of the electric drive device 38 to the exhaust control valve 37. Exhaust control valve 3
Reference numeral 7 variably controls the exhaust timing by substantially changing the position of the upper edge of the cylinder bore opening of the exhaust port in the axial direction of the cylinder bore.

The transmission mechanism 39 has flexibility by a driving pulley 45 fixed to the output shaft of the electric driving device 38 and a driven pulley 46a fixed to the outer end of the cylinder driving shaft on the rear side of the hull. They are connected by a drive cable 47a.
In this way, the rotation of the electric drive device 38 is transmitted to the exhaust control valve 37 of the rear cylinder, and further transmitted to the exhaust control valve 37 of the front cylinder.

Next, an embodiment of an electric drive device 38 for a small boat will be described with reference to FIGS. 4 is a side view of the electric driving device, FIG. 5 is a plan view of the electric driving device, FIG. 6 is a sectional view of the electric driving device, FIG. 7 is a front view of the grommet, FIG. 8 is a diagram showing wiring, and FIG. And FIG. 10 is a view showing another embodiment of the potentiometer.

The electric drive device 38 comprises a drive case 102 composed of a pair of split case members 100 and 101. Inside the drive case 102, an electric motor 103 and the power of the electric motor 103 are output after shifting. Gear mechanism 104
And are arranged.

At the mating surface of the pair of divided case bodies 100, 101, a notch step 101a is formed inside the divided case body 101.
The notch 101a is provided with a seal member 10
5 is positioned, and is fastened and fixed to the mating surface of the pair of divided case bodies 100 and 101 by screws 106 with a seal member 105 interposed therebetween.

A mounting portion 100a is formed integrally with the split case body 100, and the mounting portion 100a of the split case body 100 is fixed to the hull with the split case body 101 facing upward and the split case body 100 facing downward. The screw 106 is screwed into the split case body 101 from the fastening recess 100b formed in the mounting portion 100a of the divided case body 100 located below, and is screwed and fixed. 106 is tightened from below.

A partition plate 110 is disposed at a position where the pair of divided case bodies 100 and 101 meet. A room 120 formed by the partition plate 110 and the inside of one of the divided case bodies 100 has an electric motor 103,
A controller 130 and a potentiometer 131 are provided. The electric motor 103 is fixed to the partition plate 110 by screws 132 and is held by the split case body 100 by dampers 133. The controller 130 has one end in contact with the partition plate 110 via the damper 134 and the other end in contact with the divided case body 100 and is held. Further, the potentiometer 131 is connected to the washer 13.
5. It is attached to the partition plate 110 via the grommet 136, and is held by the divided case body 100 by the damper 137. As shown in FIG.
31 is held in the divided case body 100 via the grommet 200, and a nut 203 is fastened to the threaded portion 131a via the washer plate 201 and the washer spring 202 to elastically support the divided case body 100. Is also good.

A gear mechanism 104 is disposed in a room 140 formed by the partition plate 110 and the inside of the other split case body 101, and the gear mechanism 104
0, second gear 151, third gear 152, and fourth gear 15
3 is comprised. First gear 150, second gear 15
1. Each shaft 154, 155, 1 of the third gear 152
56 is a partition plate 110 and the other divided case body 10
1 and the fourth gear 153 is fixed to the output shaft 157. The output shaft 157 is supported by the split case body 101 and the boss 153 a of the fourth gear 153.
Is pivotally supported by the partition plate 110 via the.

The first gear 150 meshes with the drive gear 103b of the motor shaft 103a of the electric motor 103, and the first gear 150, the second gear 151, the third gear 152, and the fourth gear 153 are interlocked by the rotation of the electric motor 103. And the rotation of the electric motor 103 is reduced and output from the output shaft 157.

The output shaft 157 is rotatably provided through the split case body 101, and is sealed by a seal member 160 between the hole of the split case body 101 and the output shaft 157. The drive pulley 45 is fixed to the output shaft 157 by screws 161. A drive cable 47a is connected to the drive pulley 45, and the drive cable 47a
Denotes a support portion 101 provided integrally with the divided case body 101
b is slidably supported in the groove 101c.

A potentiometer 131 is arranged to face the fourth gear 153, and the potentiometer 131 detects the rotational position of the fourth gear 153. The detected position information is sent to the controller 130.

The controller 130 controls the position of the exhaust control valve 37, that is, the exhaust timing, based on the engine rotation signal. That is, the rotation position of the fourth gear 153 is managed by the detected position information from the potentiometer 131, and the electric motor 103 is driven by the engine rotation signal information, whereby the fourth gear 153 is operated to the target rotation position, and the exhaust gas is exhausted. The position of the control valve 37 is controlled. In addition,
The function of the controller 130 may be performed by another control device outside the electric drive device 38.

In the electric drive device 38, the output shaft 157
The first gear 150,
The second gear 151 and the third gear 152 are connected to their shafts 154, 15
And the fourth gear 153 and the output shaft 1
Assemble to 57. The fourth gear 153 and the output shaft 15
7 may be integrally formed.

Then, the seal member 105 is located at the notch step portion 101a of the divided case body 101, and the electric motor 103, the controller 130, and the potentiometer 13
1 is mounted, and the divided case body 10 is mounted via dampers 133, 134, and 137.
0, and a pair of split case bodies 1
00 and 101 are fastened and fixed.

As described above, the pair of divided case bodies 100, 1
The airtightness is improved by tightening and fixing 01 at the mating surface with the sealing member 105 interposed therebetween. Further, the inside is partitioned by a partition plate 110 arranged at the position of the mating surface of the pair of divided case bodies 100, 101, the electric motor 103, the controller 130, and the potentiometer 131 are arranged in one room 120, and the other room 140 is arranged Since the gear mechanism 104 is disposed, maintenance and inspection of the electric motor 103, the controller 130, the potentiometer 131, and the like can be performed by removing one of the split cases 100 and 101. Also, by removing the other split case 101, maintenance and inspection of the gear mechanism 104 can be performed, and the maintainability is improved.

A grommet 171 penetrating the wiring 170 is provided at the position of the mating surface of the divided case bodies 100 and 101, and one end of the wiring 170 is connected to the controller 13.
0, and the other end is connected to an exhaust control device 36 via a coupler 172, and a battery power and an engine rotation signal are input. The wiring derived from the controller 130 is connected to the electric motor 103 and the potentiometer 131.

The grommet 171 is formed with wiring holes 170a, 170b, 170c through which the wiring 170 is inserted.
Further, an inspection hole 170d into which an inspection member for inspecting the airtightness inside the drive case 102 can be inserted is formed.

When the assembly of the electric drive device 38 is completed,
The inspection member is inserted from the inspection hole 170d, and the drive case 10 is inserted.
2 is inspected for air tightness. After the inspection,
As shown in (2), the plug 180 is inserted into the inspection hole 170d and sealed.

As described above, the pair of divided case bodies 100,
An inspection hole 170d into which an inspection member for inspecting the airtightness of the inside of the drive case 102 can be inserted is formed in the grommet 171 provided at the position of the mating surface 101, so that the cost and the wiring 170 can be reduced. Wiring hole 170 penetrating
a, 170b, and 170c, and wiring holes 170a, 170b, and 170c that penetrate wiring.
And can be shared. Further, after the inspection, the inspection hole 170d can be easily closed by the plug 180, and the waterproof structure is simple and reliable.

[0038]

As described above, according to the first aspect of the present invention, the airtightness is improved by tightening and fixing the pair of divided case bodies with the sealing member interposed therebetween. Further, the inside is partitioned by a partition plate disposed at a position of a mating surface of the pair of divided case bodies, and an electric motor is disposed in one room,
Since the gear mechanism is arranged in the other room, maintenance and inspection of the electric motor can be performed by removing one of the divided cases, and maintenance and inspection of the gear mechanism can be performed by removing the other divided case, thereby improving maintainability. .

According to the second aspect of the present invention, an inspection hole through which an inspection member for inspecting the airtightness of the inside of the drive case can be inserted is formed in the grommet provided at the mating surface of the pair of divided case bodies. Therefore, it is low-cost, can be formed together with the wiring hole, can be shared with the wiring hole, can be easily closed by the plug after inspection, and the waterproof structure is simple and reliable. .

[Brief description of the drawings]

FIG. 1 is a side view of a small boat.

FIG. 2 is a plan view of the small boat.

FIG. 3 is a cross-sectional front view taken along the line III-III of FIG. 2;

FIG. 4 is a side view of the electric drive device.

FIG. 5 is a plan view of the electric drive device.

FIG. 6 is a sectional view of the electric drive device.

FIG. 7 is a front view of the grommet.

FIG. 8 is a diagram showing wiring.

FIG. 9 is a cross-sectional view in which a plug is provided in the inspection hole of the grommet.

FIG. 10 is a diagram showing another embodiment of the potentiometer.

[Explanation of symbols]

 38 Electric drive device 100, 101 Split case body 102 Drive case 103 Electric motor 104 Gear mechanism 105 Seal member 110 Partition plate 120, 140 Room 170 Wiring 171 Grommet 170d Inspection hole

Claims (2)

[Claims] An electric drive device comprising: a drive case constituted by a pair of divided case bodies; and an electric motor and a gear mechanism for shifting and outputting the power of the electric motor are arranged inside the drive case. The pair of divided case bodies are fastened and fixed by interposing a seal member on the mating surface, and a partition plate is arranged at the position of the mating surface of the pair of divided case bodies. And the gear mechanism is disposed in a room formed by the partition plate and the inside of the other divided case body. 2. An electric drive device in which a drive case is constituted by a pair of split case bodies, and an electric motor and a gear mechanism for shifting and outputting the power of the electric motor are arranged inside the drive case. A grommet that penetrates wiring is provided at the position of the mating surface of the pair of divided case bodies, and a grommet that penetrates the wiring is provided at the position of the mating surface of the pair of divided case bodies. An electric drive device having an inspection hole into which an inspection member for inspecting the airtightness of the device can be inserted.