JPH02180325A - Pinion assembling method - Google Patents

Abstract

PURPOSE:To assemble a pinion easily by contracting a dummy shaft against the elastic force of a spring, and inserting between carriers with the condition held as it is. CONSTITUTION:A dummy shaft is contracted against the elastic force of a spring 40 and inserted between carriers 11, 16 with the condition held as it is. The insertion is made from the central part of the carriers 11, 16 by contracting the dummy shaft. A pinion 12 is assembled with the dummy shaft inserted at all times. This eliminates dislocation of a washer 42, and the pinion 12 can be assembled easily.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for assembling a pinion, and particularly to a method for assembling a pinion consisting of a long pinion and a short pinion.

(Prior Art) Conventionally, in vehicles such as automobiles, power generated by an engine is transmitted to an automatic transmission mechanism via a fluid transmission device.
The speed is changed as appropriate and the power is transmitted to the power transmission device.

Of these, the above automatic transmission includes planetary gears, brakes,
It consists of a clutch, one-way clutch, etc., and each element is selectively operated to perform gear changes. The planetary gear is composed of a ring gear, a sun gear, and a pinion gear interposed between the two, and converts the torque input to one element according to the gear ratio between the elements and transmits it to the other element. It has become.

The pinion used in the conventional planetary gear described above will be explained with reference to FIG.

Figure 12 is a diagram showing the assembled state of a conventional pinion, i12
Figure (a) is a plan view of the pinion carrier, Figure 12 (b)
12(c) is a bottom view of the pinion carrier.

In the figure, a pinion 1 is sandwiched between carriers 2 and 3 from both sides and is rotatably supported. A hole 4 is bored in the carrier 2.3 at a position 41ii on the circumference, and the pinion l is placed at a position corresponding to the hole 4, and the pinion l is inserted by inserting the nion shaft 5. Can be fixed.

At this time, after assembling the carrier 2.3, the pinion l is inserted from the periphery of the carrier 2.3 in the direction of arrow C.
The pinion shaft 5 is inserted as shown by the arrow.

By the way, in addition to the above-mentioned planetary gear in which four pinions l are arranged on the circumference, there is a planetary gear in which nine pinions are arranged.

FIG. 1θ is a plan view of the pinion of the 9-axis carrier, and FIG. 11 is a perspective view thereof.

In the figure, 11 indicates three long pinions 12 on the circumference.
A large diameter carrier 14 having six short pinions 13 is disposed on its outer periphery, and both carriers 11 and 14 are integrally formed. Each long pinion 12 has a pair of short pinions 13.1
A sun gear (not shown) is provided inside the long pinion 12 and a ring gear (not shown) is provided outside the short pinion 13. Further, a ring gear is directly disposed in a portion of the long pinion 12 that does not mesh with the short pinion 13, and a single planetary gear that transmits rotation only through the long pinion 12 and the long pinion 1.
A double planetary gear is configured to transmit rotation through the short pinion 13 and the short pinion 13. In addition, both carriers 11
．． A carrier 16 is disposed opposite to the long pinion 14 and supports the long pinion 12 and the short pinion 13 so as to be rotatable therebetween. Moreover, the 1st is a cylindrical part formed in the center part of the carrier 16.

(Problem to be Solved by the Invention) However, when assembling a pinion of a 9-axis carrier having the above configuration, it is not possible to insert the long pinion 12 from the periphery of the small diameter carrier 11 using the above conventional pinion assembly method. , a large-diameter carrier 14 is located between the carrier 11 and the carrier 16, making insertion impossible.

Furthermore, if the pinion is inserted from the peripheral edge of the carrier using the conventional method, the washers on both end faces of the pinion may interfere with the edge of the carrier during insertion, resulting in displacement.

The present invention solves the problems of the conventional pinion assembly method described above, prevents the position of the washer provided on the end face of the pinion from shifting when inserting the pinion between the carriers, and prevents the long pinion from shifting. It is an object of the present invention to provide a pinion assembly method that can easily assemble a pinion of a 9-axis carrier having a short pinion and a short pinion.

(Means for Solving the Problems) In order to solve the above problems, the present invention provides two bottomed cylindrical members (38) and (39) and a double-bottomed cylindrical member (3B).
).

A spring (40) is interposed between pinion shaft insertion holes (39) to elastically support the dummy shaft.
), and the double-bottomed cylindrical members (38), (39)
is inserted between the carriers (11) and (16) in a contracted state against the spring (40).

Subsequently, after fixing the pinion (12) having the above configuration at a predetermined position, the pinion shaft (45) is fitted into the pinion shaft fitting hole (36).

(Operation and Effects of the Invention) According to the present invention, as described above, the dummy shaft is contracted against the elastic force of the spring (40), and in that state is inserted between the carriers (11) and (16). Since it is designed to be inserted, the position of the washer (42) disposed on the end face of the pinion (12) will not shift when the pinion (12) is assembled.

Then, by contracting the dummy shaft,
It can now be inserted from the center of the carriers (11) and (16), and it can be inserted into the pinion (12) of the 9-axis carrier.
) can be easily assembled.

Further, since the pinion (12) is always assembled with the dummy shaft inserted, it is possible to prevent the needle roller (37) inserted into the pinion shaft insertion hole (36) from falling off.

In the above description, each element is given a reference numeral for convenience of explanation, but these do not limit the configuration of the present invention.

(Example) Hereinafter, the pinion assembly method of the present invention will be explained in detail with reference to the drawings.

FIG. 1 is a cross-feeding state diagram of the pinion assembly method of the present invention, FIG. 2 is a plan view of the pinion assembled by the binion assembly method of the present invention, and FIG. 3 is a cross-sectional view taken along line E-E in FIG. 4 is a sectional view taken along line F-1' in FIG. 1, FIG. 5 is a state diagram when vertically fed, FIG. 6 is a sectional view taken along EE in FIG. 5, FIG. 7 is a state diagram when the binion is inserted, and FIG. The figure is a sectional view at E4 in FIG. 7, and FIG. 9 is a state diagram when the pinion shaft is inserted.

In the figure, 11 is a small diameter carrier facing the carrier 16 and having three long pinions 12 arranged therein;
is located on the outer periphery of the carrier 11, and similarly the carrier 16
This is a large-diameter carrier in which six seat binions 13 are disposed facing each other. The carrier 16 includes a cylindrical portion 18 and a flange portion 19 extending radially outward from the cylindrical portion 18.

The carriers 11, 14, 16 are shown in section LH in FIG.

Here, when assembling the long pinion 12, the upper jig 21 is moved in the direction of arrow J, and the carrier 1 is moved in the direction of arrow J.
It is brought into contact with the end face of 1. On the other hand, a pallet 22 is arranged below the carrier 16. Then, the palette 2
2 is provided with a button guide 25 formed by arranging a vertical button guide 23 and a horizontal button guide 24 in an L-shape.
and the opening 27 of the cylindrical portion 18 of the carrier 16.
are made to face each other.

The vertical bushing guide 23 has a circular passage 31,
A rectangular passage 32 is formed in the lateral bushing guide 24.

The long pinion 12 is first sent in the direction of arrow G within the passage 32 of the lateral bushing guide 24 by the operation of the lateral bushing 33. At this time, the vertical bushing 34 in the vertical bushing guide 24 is placed at the same height as the bottom surface of the passage 32.

A state in which the long pinion 12 is disposed within the passage 32 will be described with reference to FIG.

In the figure, the long pinion 12 has a pinion shaft insertion hole 36 formed in the center thereof into which a pinion shaft 45 (see FIG. 9) is inserted, and a needle roller 37 is inserted into the pinion shaft insertion hole 36. Two bottomed cylindrical members 38 and 39 are arranged so that their openings face each other. The internal bottom cylindrical members 38, 39 have opposite end faces of different diameters so that they can be fitted into the insert preform.

A spring 40 is disposed in a compressed state in a space formed on opposite sides of the internal bottom tubular member 38,39. The elastic force of the spring 40 urges the internal bottom cylindrical members 38 and 39 in a direction away from each other.

In order to limit this bias, a stopper 41 consisting of a bolt is arranged between the internal bottom tubular members 38, 39,
By rotating the stopper 41 and adjusting its position, the relative position of the internal bottom cylindrical member 3839 can be set.

Here, in the lateral feeding state shown in FIG. 1, the long pinion 12 is inserted into the passage 32 of the lateral bushing guide 24 with the internal bottom cylindrical member 38, 39 forming the dummy shaft extended. be done.

At this time, the bottomed cylindrical member 38 has moved upward to the maximum extent as shown in FIG. 3, and is engaged with the stopper 41. Since the long and nion 12 move while the ends of the internal bottom cylindrical members 38 and 39 are always in contact with the passage 32,
The position of the washer 42 does not shift.

Note that, as shown in FIG. 4, a recess 43 is formed in the lateral feed button 33 so that the side portion of the long pinion 12 can be pressed uniformly.

The long pinion 12 is moved onto the end of the vertical button 34 by the horizontal button 33, and then moves to a position where it contacts the upper jig 21 by the operation of the vertical button 34, as shown in FIG. It can be moved in the direction of the arrow up to. At this time, the long pinion 12 is connected to the bottom cylindrical member 3.
8 has moved upward to the maximum as shown in FIG. 6, and is engaged with the stopper 41.

The long pinion 12, which has been raised to a position where it contacts the upper jig 21 by the vertical feed button 34, is moved to the seventh position.
As shown in the figure, it is further moved in the direction of the arrow by another button and fixed at a predetermined position. At this time, since the long pinion 12 is pressed against the upper jig 21 by the vertical feed button 34, the bottomed cylindrical member 38 of the long pinion 12 resists the elastic force of the spring 40 and moves as shown in FIG. It is moving downward and is released from the stopper 41. Here, the end of the bottomed cylindrical member 38 is in contact with the upper jig 21, and the end of the bottomed cylindrical member 39 is in contact with the vertical feed button 34, so that the washer 42 may be misaligned. will not occur.

The long pinion 12 thus disposed and fixed at a predetermined position is then fitted with a pinion shaft 45 in the direction of arrow M as shown in FIG.
5 is rotatably supported by fixing the end portion to the carrier 11.16. At this time, as the pinion shaft 45 is inserted, the bottomed cylindrical members 38 and 39 are pushed downward and discharged into the holes 46 formed in the pallet 22.

Note that the present invention is not limited to the above embodiments,
Various modifications are possible based on the spirit of the present invention, and these are not excluded from the scope of the present invention.

[Brief explanation of the drawing]

FIG. 1 is a cross-feed state diagram of the pinion assembly method of the present invention, FIG. 2 is a plan view of the pinion assembled by the pinion assembly method of the present invention, and FIG. 3 is a sectional view taken along line F and -E in FIG. 1.
Fig. 4 is a sectional view taken along line FF in Fig. 1, Fig. 5 is a state diagram during vertical feeding, Fig. 6 is a sectional view taken along It-E in Fig. 5, Fig. 7 is a state diagram showing pinion insertion waiting, and Fig. 8 is a sectional view taken along line FF in Fig. 1. The figure is a sectional view taken along line E-E in Figure 7.
The figure shows the state when the pinion shaft is inserted, FIG. 10 is a plan view of the pinion of the 9-shaft carrier, FIG. 11 is a perspective view of the same, and
Figure 2 shows the assembled state of a conventional pinion, and Figure 12 (
12(a) is a plan view of the pinion carrier, FIG. 12(b) is a sectional view taken along line A-^ in FIG. 12(a), and FIG. 12(c) is a bottom view of the pinion carrier. l...pinion, 2. 3.11.14.16...
Carrier, 4... Hole, 5, 45... Pinion shaft, 12... Long pinion, 13... Short pinion, 21... Upper jig, 22... Pallet, 23
・・・Vertical direction bumper guide, 24...Horizontal bumper guide, 25... Button guide, 31° 32...
- Passage, 33... Horizontal feed button, 34... Vertical feed button, 38.39... Bottomed cylindrical member, 40...
Spring, 41... Stopper, 42... Washer, 46... Hole. Figure 3 Patent applicant Aisin AW Co., Ltd. Agent Patent attorney Mamoru Shimizu (1 other person) Figure 4 Figure 6 Figure 8 Figure 10 Figure 11

Claims (1)

[Claims] A dummy shaft that is elastically supported by interposing a spring between the two bottomed cylindrical members and both bottomed cylindrical members is disposed in the pinion shaft insertion hole, and both bottomed cylindrical members are supported against the spring. A method for assembling a pinion, comprising inserting the pinion in a contracted state between carriers and fixing the pinion in a predetermined position, and then fitting the pinion shaft into the pinion shaft fitting hole.