JPS6324146B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a starting device for starting an engine for engine testing.

A conventional starting device for engine testing has a friction clutch disk mounted on the tip of a rotating shaft that is moved forward and backward by a forward and backward drive means and driven by a starting motor, and that presses against the flywheel of the engine. By pressing the clutch disc against the engine, the required starting torque can be transmitted to the engine side. Conventional devices like this apply a huge thrust force to the engine crankshaft, making them unsuitable for modern lightweight engines.Moreover, in torque converter car engines, drive plates are used instead of flywheels. It was also necessary to temporarily attach the driven clutch plate. In addition, a claw clutch type is also used instead of the friction clutch type, but in this case, it is not necessary to apply the strong thrust force as mentioned above, but it is still effective against the engine's flywheel or The driven pawl clutch plate must be temporarily attached to the drive plate.

The present invention aims to eliminate the drawbacks of the conventional devices as described above, and one embodiment thereof will be described below with reference to the attached illustrative drawings.

1 is a slide guide 2 attached to both the left and right sides.
It is a movable platform that is supported by a pair of left and right guide rods 3 so as to be movable back and forth, and supports an air motor 4 for starting the engine. Reference numeral 5 denotes a cylinder unit that drives the movable base 1 back and forth through a bracket 6 protruding from the bottom of the movable base 1, and is pivotally supported by a fixed frame 8 via a support shaft 7. 9 is the rotating shaft 1 of the motor 4
A rotary disk 12 is a rotating body connected to
, cylindrical bodies 13 are fixed in parallel to the rotating shaft 10 at multiple locations in the circumferential direction, and a transmission cylindrical body is fixed to the rear end of each of these cylindrical bodies 13 via a support arm 14 to the rotary body 9. 15 are fitted.

16 is an electromagnetic clutch unit, and a board 17
A clutch facing 19 is fixed concentrically to the tip of a central shaft 18 protruding from the center, and an excitation coil 20 magnetizes the clutch facing 19.
and a coil support member 21 that supports the excitation coil 20 and is relatively rotatably supported by the central shaft 18. Reference numeral 22 denotes an elastic member for absorbing misalignment that fits into each of the cylindrical bodies 13 so as to be able to move freely in the axial direction, and a support shaft 23 that protrudes rearward from the periphery of the base plate 17 in the electromagnetic clutch unit 16.
It is fixed on the outside. Reference numeral 24 denotes a compression coil spring interposed between a spring receiving seat 25 provided at a position between the cylindrical bodies 13 at the periphery of the rotary disk 12 and the base plate 17 of the electromagnetic clutch unit 16. Reference numeral 26 denotes a connecting rod interposed between the substrate 17 and the spring receiving seat 25 at the center position of the spring 24.
Allows for core runout accompanied by deformation.

Reference numeral 27 denotes rotation stopping means for the coil support member 21 in the electromagnetic clutch unit 16, and a U-shaped member 2 fixed to the front end of the movable base 1 so as to sandwich the lower end protrusion 28 of the coil support member 21.
9 and the lower end protrusion 28, a pair of compression coil springs 30a and 30b are interposed to press the lower end protrusion 28 from both left and right sides.

According to the above configuration, the rotation of the rotating shaft 10 of the air motor 4 is caused by the rotating body 9, the support arm 14, the transmission cylinder 15, the cylinder 13, and the elastic member 22.
The rotation is transmitted to the base plate 17 of the electromagnetic clutch unit 16 via the base plate 17, and the rotation is transmitted from the base plate 17 to the clutch facing 19 via the central shaft 18.

In use, the flywheel 31 is concentric with the rotating shaft 10 and the clutch facing 19 is
engine 32 at a predetermined interval from
Once set at a predetermined position, the excitation coil 20 of the electromagnetic clutch unit 16 is energized to magnetize the clutch facing 19 adjacent thereto, and the air motor 4 is operated to move the clutch facing 19 in a predetermined direction. drive the rotation. In this state, the movable base 1 is moved forward toward the flywheel 31 by the cylinder unit 5, and after the clutch facing 19 contacts the flywheel 31, the starting air is supplied to the position where the compression coil spring 24 is slightly compressed. The motor 4 and electromagnetic clutch unit 16 are moved forward. As a result, the rotating clutch facing 1
9 is attracted and integrated with the flywheel 31 by magnetic force, the rotation of the clutch facing 19 is transmitted to the crankshaft via the flywheel 31, and the engine 32 is started.

During this engine starting operation, even if there is some misalignment between the flywheel 31 and the clutch facing 19, the electromagnetic clutch unit 16 will not be able to maintain its position on the rotary disk 12 due to the deformation of the elastic member 22. Since the clutch facing 19 can be rotated together with the flywheel 3 even when the shaft is misaligned, the clutch facing 19 is magnetically attracted and integrated with the flywheel 3 while the shaft is misaligned. Can be communicated.

After starting the engine, the cylinder unit 5 can be used to return the starting air motor 4 and electromagnetic clutch unit 16 to their original standby positions.

The device of the present invention can be implemented and used as described above, and the tip of the rotating shaft is moved forward and backward by the forward and backward drive means (the cylinder unit 5 of the embodiment) and is driven by the starting motor. To,
We installed a clutch facing that could come into contact with the flywheel or drive plate of the test engine and an excitation coil that magnetized the clutch facing, so that the clutch facing could be pressed lightly against the engine flywheel or drive plate. By magnetizing this clutch facing with an excitation coil, the clutch facing is strongly attracted and integrated with the flywheel or drive plate by magnetic force, and the rotation of the starting motor is reliably and strongly transmitted to the engine side. And it can be started. Therefore, even a lightweight engine that cannot apply a large thrust force to the crankshaft can be started without any problem. Additionally, since all that is needed is a smooth magnetic flat surface that the clutch facing can abut against, the clutch facing can be adsorbed as is, without the need for a special attachment to the drive plate of a torque converter vehicle. By integrating them, starting torque can be reliably transmitted.

Furthermore, according to the present invention, in order to attach a clutch facing and an excitation coil to the tip of the rotating shaft, the tip of the rotating shaft is capable of eccentric movement in any direction against elasticity, and A board that can be moved backward in the axial direction against elasticity is supported, the clutch facing is attached to the front side of this board so as to rotate together with the board, and the excitation coil is connected to the board and the clutch facing. The clutch facing is attached to a coil supporting member which is supported to be rotatable relative to the board between the clutch facing and the clutch facing. Even if the rotating shaft that drives the clutch facing and the flywheel or drive plate are not completely concentric, the clutch facing and the flywheel or drive plate can be reliably attracted to each other by electromagnetic force and rotated together. Even if there is some variation in the setting position of the test engine, the desired starting action can be performed reliably and satisfactorily.

Further, unlike a general electromagnetic clutch, the excitation coil that magnetizes the clutch facing is not rotated, so power supply wiring to the excitation coil can be easily installed.

The starting air motor (an electric motor or a hydraulic motor may also be used) 4 is fixed, a telescopic transmission shaft is interposed between the rotating shaft 10 and the rotating body 9, and the rotating body 9 is controlled by the cylinder unit 5. It can also be configured to move forward and backward together with the clutch unit 16.

[Brief explanation of the drawing]

FIG. 1 is a partially longitudinal side view, and FIG. 2 is a longitudinal front view. DESCRIPTION OF SYMBOLS 1... Movable base, 3... Guide rod, 4... Air motor for engine starting, 5... Cylinder unit for driving the movable base forward and backward, 9... Rotating body, 1
2... Rotating disk, 13... Cylindrical body, 15... Transmission cylinder body, 16... Electromagnetic clutch unit, 17...
...Substrate, 19...Clutch facing, 20...
... Excitation coil, 21 ... Coil support member, 22 ...
... Elastic member for absorbing misalignment, 24 ... Compression coil spring, 27 ... Coil support member rotation stopping means, 30
a, 30b...compression coil spring, 31...flywheel, 32...engine.

Claims (1)

[Claims] 1 At the tip of a rotating shaft that moves forward and backward by a forward and backward drive means and is driven by a starting motor,
A board is supported that can be eccentrically moved in any direction against elasticity and also movable backward against elasticity in the axial direction of the rotating shaft, and a flywheel or drive of the test engine is mounted on the front side of this board. A clutch facing capable of contacting a plate is attached to rotate together with the board, and an excitation coil for magnetizing the clutch facing is rotatable relative to the board between the board and the clutch facing. A starting device for engine testing, which is attached to a supported coil support member and includes means for stopping rotation of the coil support member.