JP2642234B2 - Starting device for internal combustion engine - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a starting device for an internal combustion engine used in an internal combustion engine test facility for performing various performance tests by igniting an assembled internal combustion engine.

Conventional technology Conventionally, internal combustion engine test equipment has been provided that can perform the desired test with a shared equipment for both the manual type and automatic type internal combustion engines, and the starter is compatible with both types It has a structure to do.

That is, for example, the starting device disclosed in Japanese Patent Application Laid-Open No. Sho 59-208158 has a spline fitting at a tip of a starting shaft interlocked with an output shaft of a driving means with a boss provided on a swift wheel of a manual type internal combustion engine. A free male spline shaft is provided, and an internal gear that is rotatable integrally with the starting shaft can be engaged with an external gear formed on a drive plate of an automatic internal combustion engine.

According to this conventional structure, the male spline shaft portion is spline-fitted to the male spline shaft hole provided in the boss portion, so that the starting operation of the manual type internal combustion engine can be performed, and the internal gear is externally fitted to the external gear of the drive plate. By performing the engagement, the automatic internal combustion engine can be started.

Problems to be Solved by the Invention According to the above-mentioned conventional type, if the shapes of the external gears are significantly different due to manufacturing accuracy, mounting accuracy, etc., the engagement of the internal gear cannot be performed reliably and accurately. In addition, a tapping sound is generated at a portion where the external gear and the internal gear engage with each other, so that an operator cannot directly measure abnormal noise or vibration of the internal combustion engine during operation by directly opening it.

An object of the present invention is to provide a starting device for an internal combustion engine that can always smoothly operate an automatic internal combustion engine regardless of the shape of an external gear and that can accurately measure by an operator himself. .

Means for Solving the Problems To achieve the above object, a starting device for an internal combustion engine according to the present invention comprises: a movable shaft that can be freely moved toward and away from an internal combustion engine installation portion; A shaft, which is integrally rotatable and relatively slidably provided in the direction of the starting axis, and an operating device for relatively sliding is provided, and a driving device for interlockingly connecting the starting shaft is provided; At the front end of the starting shaft, a spline shaft that can be spline-fitted is connected to a spline hole provided on the main shaft center on the main shaft side of the manual type internal combustion engine, and a buffer member is attached to the front end side on the cylinder shaft side,
A bush is provided on the front surface of the cushioning member so that the drive plate of the automatic internal combustion engine can be externally fitted to a bolt group for mounting the drive plate.

According to the configuration of the present invention, when the manual internal combustion engine is installed in the internal combustion engine installation section, the cylinder shaft and the starting shaft are relatively slid by the operation of the operating device so that the spline shaft is projected forward. By moving the movable table forward in the state, the spline shaft can be spline-fitted to the spline hole on the main shaft side, and therefore, the rotational force of the starting device can be transmitted from the starting shaft to the main shaft to start the manual type internal combustion engine. .

When the automatic internal combustion engine is installed in the internal combustion engine installation section, the movable table is moved forward with the spline shaft retracted rearward by operating the operating device to relatively slide the cylinder shaft and the starting shaft. By doing so, the bush group can be externally fitted to the drive plate mounting bolt group. Therefore, the rotational force of the starting device is transmitted to the main shaft via the cylindrical shaft that rotates integrally with the starting shaft, and the starting operation of the automatic internal combustion engine is started. Can be performed. At this time, a striking sound is generated at the fitting portion of the fitting portion of the bolt group, which can be absorbed by the buffering action of the buffer member and the bush group.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

Reference numeral 1 denotes a movable base which can be freely moved toward and away from the internal combustion engine installation part 2 and is supported and guided by the base frame 3. That is, movable table 1
A pair of left and right sliding bodies 4 are mounted on the lower surface of the base frame 3, and a guide rail 5 for supporting and guiding these sliding bodies 4 is mounted on the upper surface of the base frame 3. A cylinder device 6 for moving the movable base 1 is provided between the movable base 1 and the base frame 3.

On the movable base 1, a cylinder shaft 7 and a starting shaft 8 inserted through the cylinder shaft 7 are provided so as to be rotatable integrally and relatively slidable in the direction of the starting axis 9. That is, a block body 10 is attached to a front portion of the movable base 1, and an outer cylinder body 13 is provided via a bearing 12 in a front-rear direction through hole 11 formed in the block body 10. By connecting the cylinder shaft 7 to the body 13 and integrating the cylinder shaft 7 with the key 14, the cylinder shaft 7
Is rotatable only around the starting shaft 9, and the starting shaft 8 inserted through the cylindrical shaft 7 is integrally formed with the cylindrical shaft 7 around the starting shaft 9 by a ball spline structure 15 provided between the two. It is rotatable and slidable relative to the cylinder shaft 7 on the ninth power of the starting axis.

An operating device 20 that relatively slides the starting shaft 8 includes a slide bearing 22 that is externally fitted to the cylindrical shaft 7 via a bearing 21 behind the block body 10, and the slide bearing 22 is connected to the starting shaft center 9. The guide rail 23 provided on the movable base 1 for sliding guide in the direction of, the sliding body 24 provided on the lower surface of the slide bearing 22, the cover frame 16 provided on the movable base 1 and the slide bearing 22 stand. And a cylinder device 26 provided between the bracket 25 provided.

A motor (drive device) 27 is disposed behind the movable base 1, and its output shaft 28 is connected to an intermediate shaft 30 via a coupling 29.
Are integrated, and a coupling is provided at the front end of the intermediate shaft 30.
The rear end of the starting shaft 8 is integrated via 31. The motor 27 is installed on a driven table 32, and the driven table 32 is integrated with the movable body 1 via a connecting member 33. And follower table 32
And a guide rail 35 for supporting and guiding the sliding member 34 is provided on a separate machine base 36.

A cylinder shaft 41 is connected to the front end of the starting shaft 8 via an adjustable coupling 40 or the like, and a spline that can be fitted to the main shaft side of a manual type internal combustion engine from the front end of the cylinder shaft 41 forward. A shaft 42 is provided continuously. Flange at the front end of the cylindrical shaft 7
A ring body 44 is fixed via 43, and a cylindrical member 45 for externally fitting the cylindrical shaft body 41 is continuously provided from the ring body 44,
A ball spline structure 46 is provided between the two.

A ring-shaped buffer member 48 is attached to the front end of the cylindrical member 45 via a cylindrical holding member 47. The cushioning member 48 is formed of a resin, and at the front surface thereof, fitting recesses 49 are formed at a plurality of locations in the circumferential direction. On the inner surfaces of these fitting recesses 49, bolts for mounting a drive plate of an automatic internal combustion engine are formed. Fixing a tubular bush 50 that can be fitted externally
It is detachably attached by 51. 52 indicates a cover cylinder, and 37 indicates a junction.

In FIG. 1, reference numeral 55 denotes a manual type internal combustion engine,
A flywheel 58 is attached to a front end of a main shaft 57 rotatable on 56, and the spline shaft 42 is spline-fitted to a central boss portion 60 of a clutch disc 59 set on the front surface of the flywheel 58. An adjustable spline hole 61 is formed. In FIG. 2, reference numeral 62 denotes an automatic internal combustion engine, and a drive plate 65 is attached to a front end of a main shaft 63 through a plurality of bolts 64. The two internal combustion engines 55 and 62 are connected to the
The pallet 66 is provided with a junction 67.

Next, the starting operation of the internal combustion engine in the above embodiment will be described.

As shown in FIG. 1, when the manual internal combustion engine 55 is installed in the internal combustion engine installation section 2, the cylinder device 26 of the operating device 20 is contracted and the starting shaft 8 is moved forward relative to the cylinder shaft 7. Let me. As a result, the spline shaft 42 protrudes forward from the front surface of the cushioning member 48. When the movable table 1 is advanced by extending the cylinder device 6 in this state, the spline shaft 42 which is integrally advanced is spline-fitted to the spline hole 61 as shown by the imaginary line in FIG.
Therefore, the rotational force of the motor 27 is controlled by the output shaft 28, the intermediate shaft 30,
The power is transmitted to the boss portion 60 via the starting shaft 8, the connecting member 40, and the cylindrical shaft member 41, and the main shaft 57 is similarly operated for starting.

As shown in FIG. 2, when the automatic internal combustion engine 62 is installed in the internal combustion engine installation section 2, the cylinder device 26 of the operating device 20 is extended and the starting shaft 8 is moved backward relative to the cylinder shaft 7. Let me. As a result, the spline shaft 42 is retracted inward from the front surface of the buffer member 48. In this state, when the movable unit 1 is advanced by extending the cylinder device 6, the fitting recess is fitted to the head of each bolt 64 before the buffer member 48 that advances integrally contacts the dry plate 65. 49, that is, the bush 50 group is fitted.

Therefore, the rotational force of the motor 27 is
0, the starting shaft 8, the ball spline structure 15, the cylindrical shaft 7, the flange 43, the ring body 44, the cylindrical member 45, the transmission to the buffer member 48 via the holding member 47, and the plurality of bolts 64
The main shaft 63 is started around by revolving around 56. At that time, a striking sound is generated at the fitting portion between the fitting recess 49 and the bolt 64, but this can be absorbed by the buffering action of the buffer member 48 and the bush 50 group formed of resin.

As described in the above embodiment, by adopting the type in which the motor 27 is directly connected to the rear end side of the starting shaft 8, the centering can be performed more accurately than in the case of interlocking with the cylindrical shaft 7 via a timing belt or the like. It can be performed well, and the generation of noise due to driving can be reduced.

In the above embodiment, the cylinder shaft 7 is slid with respect to the starting shaft 8. However, the cylinder shaft 7 may be slid with respect to the cylinder shaft 7.

According to the present invention having the above configuration, when a manual type internal combustion engine is installed in the internal combustion engine installation section, the operation of the operating device causes the cylinder shaft and the starting shaft to relatively slide to project the spline shaft forward. By moving the movable base forward in this state, the spline shaft can be spline-fitted into the spline hole on the main shaft side.Therefore, the rotational force of the starting device is transmitted from the starting shaft to the main shaft and the manual type internal combustion engine is used. Start operation can be performed.

When the automatic internal combustion engine is installed in the internal combustion engine installation section, the movable table is moved forward with the spline shaft retracted rearward by operating the operating device to relatively slide the cylinder shaft and the starting shaft. By doing so, the bush group can be externally fitted to the drive plate mounting bolt group, so that the torque of the starting device is transmitted to the main shaft via the cylindrical shaft that rotates integrally with the starting shaft, and the automatic internal combustion engine Start operation can be performed. As a result, even if the shape of the drive plate is significantly different due to manufacturing accuracy, mounting accuracy, or the like, the intended start operation of the automatic internal combustion engine can always be smoothly performed without any trouble.

Thus, according to the present invention, by relatively sliding the cylinder shaft and the starting shaft by the operation of the operating device, the starting operation for the double-sided internal combustion engine having a different passive structure on the main shaft side,
It can always be performed smoothly and reliably. In addition, in the case of an automatic internal combustion engine, when a bolt group is fitted, a striking sound tends to be generated at the fitting portion, but this can be absorbed by the buffering action of the buffer member and the bush group. Therefore, the operation as a whole can be performed with less striking noise (noise), and the measurement such as abnormal noise or vibration of the internal combustion engine during operation can be accurately performed by direct hearing by the operator.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of the present invention. FIG. 1 is a vertical sectional side view of a main part when a manual type internal combustion engine is installed. FIG. 2 is a vertical side view of a main part when an automatic type internal combustion engine is installed. FIG. 3 is a vertical sectional side view of a vertical cushioning member attaching portion, FIG. 4 is a front view of the same, and FIG. 5 is a partially cutaway side view of the whole. DESCRIPTION OF SYMBOLS 1 ... movable stand, 2 ... internal combustion engine installation part, 3 ... base frame, 6 ... cylinder device, 7 ... cylinder shaft, 8 ... starting shaft,
9 ... starting axis, 10 ... block, 20 ... operating device,
26 …… Cylinder device, 27 …… Motor (drive device), 28…
... Output shaft, 30 ... Intermediate shaft, 40 ... Connector, 41 ... Cylindrical shaft, 42 ... Spline shaft, 45 ... Cylinder member, 48 ... Cushion member, 49 ... Fit recess, 50 ... ... bush, 55 ... manual type internal combustion engine, 56 ... spindle axis, 57 ... spindle, 60 ... boss, 61 ... spline hole, 62 ... automatic type internal combustion engine, 63 ... spindle, 64 ... Bolt, 65 ... Drive plate.

Continuation of the front page (72) Inventor Hirokazu Samata 1 Toyota Town, Toyota City, Aichi Prefecture Inside Toyota Motor Corporation (56) References JP-A-59-208158 (JP, A) JP-A-60-56166 (JP) JP-A-59-179277 (JP, U) Patent 166370 (JP, C1)

Claims (1)

(57) [Claims] A movable table which can be freely moved toward and away from an internal combustion engine installation section, slides a cylindrical shaft and a starting shaft inserted through the cylindrical shaft relative to each other in the direction of the starting axial center. Provided movably and provided with an operating device that slides relatively, a driving device interlockingly connected to the starting shaft side, and a front end of the starting shaft, on a main shaft side of a manual type internal combustion engine, on a main shaft center thereof. A spline shaft that can be spline-fitted is connected to the provided spline hole, a buffer member is attached to the front end side of the cylinder shaft side, and a bolt group for attaching a drive plate of an automatic internal combustion engine to the front surface of the buffer member. A starting device for an internal combustion engine, comprising a bush that can be fitted outside.