JPS60256561A - Starter - Google Patents

Abstract

PURPOSE:To increase the degree of freedom from the standpoint of a starter setup, by setting up a driving part provided with a motor and an operating part transmitting drivine force of the motor to a flywheel, in keeping them apart from each other, while connecting each of them together via a shaft coupling. CONSTITUTION:A starter 3 is set up in and around a joining part between a cylinder block 1 and an oil pan 2. In this case, the starter 3 is constituted of setting up an operating part 4 and a driving part in keeping them apart from each other and connecting them together via a shaft coupling 6. And, it rotates an output shaft 15 according to operation of a motor inside the driving part 5 and further rotates an input shaft 11 of the operating part 4 via the shaft coupling 6. With this rotation, the operating part 4 rotates a crankshaft via a flywheel 12, thus an engine starts. With this constitution, the degree of freedom from h standpoint of the setup of the starter 3 is increasable, while slippage in a setting position between the operating part 4 and the driving part 5 is absorbed by the shaft coupling 6, thus excessive load is preventable from being imposed on the motor of the driving part 5.

Description

DETAILED DESCRIPTION OF THE INVENTION A. OBJECTIVES OF THE INVENTION (1) Industrial Field of Application The present invention includes a drive unit including a motor, and a drive unit that operates to transmit motor driving force to a flywheel in accordance with the operation of the motor. The present invention relates to a starter including an operating section.

(2) Conventional technology Conventionally, in such starters, the driving part and the actuating part are housed in the same housing, and in order to mesh with the ring gear and transmit power, the starter is installed in a position close to the flywheel. limited to location.

(3) Problems to be Solved by the Invention The present invention has been made in view of the above circumstances, and provides a greater degree of freedom in the arrangement of the starter by allowing the driving part and the actuating part to be separated from each other. The purpose is to provide a starter with

B1 Structure of the Invention (1) Means for Solving the Problems According to the present invention, the actuating part and the driving part are arranged separately, and the output shaft of the driving part and the input shaft of the actuating part are separated by a small distance from each other. They are connected via a shaft joint that can tolerate slight eccentricity and slight changes in the distance between them.

(2) Operation When the drive unit is started, the rotational movement of the output shaft is transmitted to the input shaft via the shaft coupling, and the operating unit operates to transmit the driving force to the flywheel.

(3) Example Hereinafter, an example of the present invention will be explained with reference to the drawings. First, in FIG.
The starter 3 of the present invention is disposed near the coupling portion between 771 and 0, and the starter 3 is constructed by connecting an actuating section 4 and a driving section 5, which are spaced apart, via a shaft coupling 6.

The housing 7 of the actuating part 4 includes a bulge 9 that is integrally provided with the clutch housing 8 and a cover 10 that is integrally connected to the bulge 9. The clutch housing 8 is connected to the cylinder block 1. It is integrally connected to the oil pan 2. In this housing T, cover 1
An input shaft 11 is rotatably supported in the housing 1, and a known pinion, clutch, return mechanism, etc. are accommodated in the housing 1. On the other hand, inside the clutch housing 8 is a flywheel 12 fixed to the engine crankshaft.
are housed and arranged, and the binion is connected to the input shaft 110.
It engages with the ring gear provided on the flywheel 12 in accordance with the rotational movement and operates to transmit the driving force of the input shaft 11, □" to the flywheel 12.
Ru.

The housing 13 of the drive unit 5 is fitted with bolts 1 to the cylinder block 1 and oil pan 2 at a location remote from the actuating unit 4.
4, and a known motor and speed reduction mechanism are accommodated within this housing 13. In this drive section 5, the output of the motor is output from the output shaft 15 via the speed reduction mechanism.

The housing 13 connects the axis of the output shaft 15 to the operating section 4.
The output shaft 15 and the input shaft 11 are connected by a shaft coupling 6.

In FIGS. 2 and 3, the shaft joint 6 is, for example, a shaft joint commercially available under the trade name "Tri-Ball Joint", and includes a pair of joint members 16° 17 and a torque tube 18, three each. It consists of two sets of balls 19.

The side joint members 16, 17 have connection holes 2 on mutually spaced sides.
0.21, respectively, and ring-shaped grooves 2223 are provided on mutually opposing surfaces for inserting both ends of the torque tube 18, respectively. The valley grooves 22 and 23 are located at equal intervals in the circumferential direction of each joint member at 16° and 17°.
The diameter of each of the circular holes 24 and 25 is set to such an extent that the ball 19 can be inserted thereinto. Also, valley groove 22.
The width of the hole 23 is smaller than the diameter of the circular hole 24°250, and is set to such an extent that the torque tube 18 can be inserted therein.

On the other hand, three holding holes 26.27 for holding the balls 19 are formed at both ends of the torque tube 18 at equal intervals in the circumferential direction.
7, each ball 19 is held.

The end of the output shaft 15 of the drive unit 5 is inserted into the connection hole 20 of one joint member 16 and fixed with a pin, and the input shaft 15 of the actuator 4 is inserted into the connection hole 21 of the other joint member 17. The end is inserted and fixed with a pin.

Further, the opposite ends of both coupling members 16, 47 are covered with rubber cylindrical covers 28.

In such a shaft joint 6, the rotational power of one joint member 16 is transmitted to the torque tube 18 via the ball 19.
It is further transmitted to the other joint member 17 via the bow 19. Moreover, in this shaft coupling 6,
Even if the insertion length of the torque tube 18 into the six grooves 22 and 23 changes slightly, the torque transmission function will not change. Small changes in distance are now allowed.

Furthermore, eccentricity of both coupling members 16.17 by the gap between the six grooves 22.23 and the torque tube 18 is allowed, and therefore a slight eccentricity of the output shaft 15 and input shaft 11 is allowed. .

Next, the operation of this embodiment will be described. The output shaft 15 rotates according to the operation of the motor in the drive section 5, and the input shaft 11 of the operation section 40 further rotates via the shaft coupling 6.

As a result, in the operating portion 4, the pinion meshes with the ring gear of the flywheel 12, and the crankshaft is rotated via the flywheel 12, thereby starting the engine.

In such a starter 3, the drive unit 5 can be arranged at a position separated from the flywheel 12, and therefore the degree of freedom in arranging the starter 3 is increased. In addition, the shaft coupling 6 allows slight eccentricity between the output shaft 15 and the input shaft 11 and a slight change in the distance between them, so that the mounting positions of the actuating part 4 and the driving part 5 can be kept away from the set position. Even if it deviates, it is possible to avoid applying an extra load to the motor of the drive unit 5.・1
(C1 Effect of the invention As described above, according to the present invention, the actuating part and the driving part are arranged apart from each other, and the output shaft of the driving part and the input shaft of the actuating part are slightly eccentric between each other and Since they are connected via a shaft joint that can tolerate slight changes in distance, the degree of freedom in starter arrangement increases and it is possible to prevent excessive load from being applied to the motor.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a front view showing the installed state of the starter of the present invention, FIG. 2 is an enlarged vertical cross-sectional view of the shaft coupling, and FIG. -m line sectional view. 3... Starter, 4... Operating section, 5... Drive section,
6... Shaft coupling, 12... Flywheel Patent applicant Honda Motor Co., Ltd.

Claims (1)

[Claims] In a starter including a drive part including a motor, and an actuation part that operates to transmit the driving force of the motor to the flywheel in accordance with the operation of the motor, the actuation part and the drive part are arranged apart from each other, and the drive part A starter characterized in that the output shaft and the input shaft of the actuating section are connected via a shaft joint that can tolerate slight eccentricity between them and slight change in the distance between them.