JP2000240790A - Positioning structure for manual valve lever - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the cost by restricting the axial movement of a manual valve lever using existing components. SOLUTION: In an automatic transmission having a control shaft 10 and a manual valve 4 arranged in parallel to each other, the rotation of the control shaft 10 is converted to the axial movement of the manual valve 4 via a crank mechanism. The crank mechanism comprises a first manual valve lever 13 fixed to the control shaft 10, a slide core 16 engaged with a pin 17 of the first manual valve lever 13, and a second manual valve lever 19 having one end engaged with the slide core 16 and the other end engaged with the manual valve 4. One end of the shaft part 21 of the second manual valve lever 19 is positioned by a mating face of an extension housing 6 fixed to one end of a transmission casing, and the other-side end face of the second manual valve lever 19 is positioned by a parking support 28.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a positioning structure for a manual valve lever, and more particularly to a structure for restricting the axial movement of a manual valve lever for converting the rotation of a control shaft into the axial movement of a manual valve. .

[0002]

2. Description of the Related Art Automatic transmissions are roughly classified into an FR type and an FF type. In both cases, the movement of a select lever is transmitted to a control shaft of a transmission via a cable, and the rotation of the control shaft is transmitted to a manual valve. It converts to axial movement and switches to each operating range.

In general, in an automatic transmission, a control shaft and a manual valve are often arranged at right angles to each other. As described in JP-A-8-200486, a manual valve lever having a detent groove in the control shaft is often used. The rotation of the control shaft is converted into the axial movement of the manual valve by fixing the manual valve lever and engaging the pin provided on the manual valve lever with the engagement groove of the manual valve.

However, the control shaft and the manual valve are sometimes arranged in parallel due to restrictions on the shape and space of the valve body. In this case, the rotation of the control shaft is caused by the axial movement of the manual valve. A conversion mechanism must be provided. In order to convert the rotation of the control shaft into the axial movement of the manual valve, the applicant of the present application has arranged a first manual valve lever fixed to the control shaft and a movable member orthogonal to the control shaft. A slide core having an engagement groove for engaging a pin provided in a first manual valve lever, and a control shaft and a slide core rotatably disposed about an axis orthogonal to the slide core; (Japanese Patent Application No. Hei 10-14069) has proposed a crank mechanism comprising a second manual valve lever which engages with the engaging groove of the manual valve and the other end engages with the engaging portion of the manual valve.
No. 9).

[0005]

As described above, in the case of a structure in which the control shaft and the manual valve are arranged at right angles, the rotation of the control shaft is moved by a relatively simple mechanism in the axial direction of the manual valve. However, when the manual valve lever and thus the control shaft moves in the axial direction, the pin of the manual valve lever may be disengaged from the engagement groove of the manual valve. Therefore, it is necessary to accurately position the manual valve lever or the control shaft in the axial direction. Similarly, even in the case where the control shaft and the manual valve are arranged in parallel, a positioning means for restricting the axial movement of the first manual valve lever and the second manual valve lever is required.

For this reason, conventionally, as shown in FIG. 1, a groove G is formed in a shaft S, a hole H orthogonal to a shaft hole D is formed in a case C, and a roller R is inserted into the hole H. By engaging R with groove G, shaft S
Was positioned in the axial direction.

However, in such a positioning structure, it is necessary to machine the groove G in the shaft S.
The hole H is required, it is difficult to assemble small parts such as the roller R, and it is necessary to prevent the roller R from coming off. there were.

Accordingly, an object of the present invention is to provide a manual valve lever positioning structure that reduces costs by restricting the movement of the manual valve lever in the axial direction using existing parts.

[0009]

In order to achieve the above object, according to the first aspect of the present invention, a control shaft and a manual valve are disposed at right angles to each other, and the rotation of the control shaft is controlled by the axial movement of the manual valve. In an automatic transmission that converts and switches to each operation range, a manual valve lever having a pin that engages with a manual valve is fixed to a control shaft, and one end face of the control shaft in the axial direction is a transmission case. The manual valve lever is characterized in that it is positioned at the mating surface of the side cover that is fixed to the manual valve lever, and the other axial end surface of the manual valve lever is positioned against a part of a separate plate provided between the valve bodies. Provide a positioning structure. According to a second aspect of the present invention, there is provided an automatic transmission in which a control shaft and a manual valve are arranged in parallel, the rotation of the control shaft is converted into the axial movement of the manual valve, and the operation is switched to each operation range. A crank mechanism for converting the rotation of the control shaft into an axial movement of the manual valve is provided. The crank mechanism includes a first manual valve lever fixed to the control shaft and a shaft portion orthogonal to the control shaft. A second end is pivotally disposed about the center, one end of which swings in association with the swing of the first manual valve lever, and the other end of which engages with the engaging portion of the manual valve.
One end surface of the shaft portion of the second manual valve lever is positioned at the mating surface of the extension housing fixed to the end surface of the transmission case, and the other end surface of the second manual valve lever is opposite to the end surface of the second manual valve lever. The present invention also provides a manual valve lever positioning structure characterized by being positioned by a parking support that guides a parking lock shaft that operates in the axial direction in accordance with the movement of the control shaft. Further, the invention according to claim 3 is an automatic transmission in which the control shaft and the manual valve are arranged in parallel, and the rotation of the control shaft is converted into the axial movement of the manual valve and switched to each operation range. A crank mechanism for converting the rotation of the control shaft into an axial movement of the manual valve is provided. The crank mechanism is provided with a first manual valve lever fixed to the control shaft and a movable mechanism orthogonal to the control shaft. A slide core that is disposed and has an engagement groove that engages with a pin provided on the first manual valve lever; and a control shaft and the slide core are rotatably disposed about an axis orthogonal to the slide core, and one end is Engage with the engaging groove of the slide core, the other end is manual A second manual valve lever engaged with an engagement portion of the valve, one end surface of the first manual valve lever in the axial direction is positioned on the peripheral surface of the slide core, and the other end surface of the first manual valve lever is A positioning structure for a manual valve lever is provided, which is positioned by a bearing boss of a transmission case bearing a control shaft.

[0010] When the control shaft and the manual valve are arranged at right angles as in claim 1,
Since the axial movement of the control shaft (manual valve lever) is positioned between the mating surface of the existing side cover and a part of the separate plate, positioning can be performed without using separate components such as rollers, and the shaft groove Since no special processing such as processing or hole drilling of the case is required, the configuration can be made at low cost. According to the second aspect, when the control shaft and the manual valve are arranged in parallel, the axial movement of the second manual valve lever is positioned by the mating surface of the extension housing and the parking support. The second manual valve lever can be positioned in the axial direction without using any components, and can be configured at low cost. According to the third aspect, similarly to the second aspect, when the control shaft and the manual valve are arranged in parallel, the axial movement of the first manual valve lever is controlled by the circumferential surface of the slide core and the bearing boss of the transmission case. , And can be configured at low cost.

Incidentally, the crank mechanism of the second aspect may be constituted by a first manual valve lever, a slide core and a second manual valve lever, as in the third aspect.
By using the slide core, the rotation of the control shaft can be smoothly transmitted to the axial movement of the manual valve.

[0012]

FIG. 2 shows the arrangement direction of main shafts (input shafts, output shafts, etc.) and control shafts in an FR type automatic transmission and an FF type automatic transmission. That is, FR
In the case of the FF type, the main shaft is disposed in the vehicle longitudinal direction, and in the case of the FF type, the main shaft is disposed in the vehicle width direction. Generally, it is desirable to arrange the control shaft for shifting operation in the vehicle width direction in terms of wiring such as cables. Therefore, the control shaft is arranged in a direction perpendicular to the main shaft in the FR type, and in parallel with the main shaft in the FF type. Will be established.

FIGS. 3 to 7 show an example in which the manual valve lever positioning structure according to the present invention is applied to an FR type automatic transmission, that is, an automatic transmission in which a control shaft and a manual valve are arranged in parallel. In the figure,
1 is a transmission case, 2 is a valve body fixed to the transmission case 1, 3 is an oil pan fixed on the lower surface of the transmission case 1 so as to cover the valve body 2, 6 is a rear end of the transmission case 1 The extension housing 7 attached to the portion is a clutch housing formed integrally with the front end of the transmission case 1.

Various valves such as a manual valve 4 are mounted on the valve body 2 horizontally and in a direction perpendicular to the main shaft 5.
That is, they are arranged in the vehicle width direction. Manual valve 4
4 protrudes from the valve body 2 as shown in FIG. 4, and an engagement groove 4a is formed in this protruding portion.

On the side of the transmission case 1, a control shaft 10 for operating the manual valve 4 is inserted and supported in the vehicle width direction, that is, parallel to the manual valve 4 (see FIG. 6). An outer lever 12 is fixed to the outer end of the control shaft 10, one end of a control cable 11 is connected to the outer lever 12, and the other end of the control cable 11 is connected to a shift lever (not shown). A boss 13 e of a detent plate (first manual valve lever) 13 is fixed to an inner portion of the control shaft 10 inserted into the transmission case 1. Detent plate 13
Is formed with a sector 13a protruding in the radial direction, and a plurality of detent grooves 13b are formed on the peripheral surface of the sector 13a. One end of a detent spring 14 made of a leaf spring is fixed to the lower surface of the transmission case 1, and a roller 15 attached to the other end of the detent spring 14 is elastically fitted into the detent groove 13b. I have. As a result, the detent plate 13 becomes P,
Positioning is performed at each position such as R, N, D, 2, and L.

The detent plate 13 has a sector 13
An extended portion 13c (see FIG. 7) extending obliquely rearward from a is formed, and a pin 17 that engages with the circumferential groove 16a of the slide core 16 is fixed to a side surface of the extended portion 13c. The slide core 16 is provided on the support portion 1a of the transmission case 1.
The shaft 18 is slidably inserted between a shaft 18 supported in the up-down direction between the valve body 2 and the support portion 2a of the valve body 2. Although the example in which the slide core 16 is slidable with respect to the shaft 18 is shown here, the shaft 18 and the slide core 16 may be fixed, and the shaft 18 may be slidable up and down with respect to the transmission case 1. .

In the circumferential groove 16a of the slide core 16, FIG.
As shown in FIG. 7, a pin 20 fixed to one end of a bell crank (second manual valve lever) 19 is also engaged. The bell crank 19 has a shaft 21 extending in the vehicle longitudinal direction.
Rotatably supported by the bell crank 19
A pin 22 that engages with the engagement groove 4a of the manual valve 4 is fixed to the other end of the manual valve 4.

The detent plate 13, the slide core 16, and the bell crank 19 constitute a crank mechanism CR of the present invention for converting the rotation of the control shaft 10 into the axial movement of the manual valve 4.
The sliding direction of the slide core 16 is not limited to the vertical direction, and the rotating shaft 21 of the bell crank 19 is not limited to the vehicle longitudinal direction.

The sector 1 of the detent plate 13
A parking lock operation portion 13d extending upward is provided at a portion opposite to 3a, and one end of a parking lock shaft 23 having a parking lock cam 24 is attached to the operation portion 13d. Transmission case 1
, A parking support 28 for guiding the parking lock shaft 23 is fixed. When the parking lock shaft 23 moves forward, the bottom surface of the parking lock cam 24 slides against the parking support 28 and is pushed up. As a result, the parking lock cam 24 pushes up the parking pole 25 and the parking lock provided on the output shaft 26 of the transmission. By meshing with the gear 27, the movement of the vehicle is regulated.

Next, the operation of the crank mechanism CR will be described with reference to FIG.
It is explained according to. When the control shaft 10 rotates in the direction of arrow A with the operation of the shift lever, the pin 17 fixed to the detent plate 13 operates the slide core 16 to move in the direction of arrow B. Since the pin 20 at one end of the bell crank 19 is also engaged with the slide core 16, the bell crank 19 is
Rotates in the direction of arrow C with the vertical movement of. The rotation of the bell crank 19 is transmitted to the manual valve 4 via a pin 22 provided at the other end, moves the manual valve 4 in the axial direction D, and outputs P, R, N, D, 2, L, and the like. It can be moved to each position.

As described above, the control shaft 10
Since both the manual valve and the manual valve 4 can be arranged in the vehicle width direction, the regulator valve and the manual valve also arranged in the vehicle width direction are parallel to each other. Since both the regulator valve and the manual valve 4 are large valves occupying a large space in the valve body 2, the valve body 2 can be downsized by arranging these two valves in parallel with each other. Moreover, this valve body 2
(Including various valves) can be shared with a valve body of the FF type automatic transmission described later. That is, by replacing the control shaft 10 and adding the slide core 16 and the bell crank 19, the FF type valve body can be directly applied to the FR type automatic transmission.

In the above embodiment, the slide core 16 is used as the crank mechanism CR, but the slide core is omitted,
The detent plate 13 and the bell crank 19 can constitute a crank mechanism. That is, one end of the bell crank 19 may be engaged with the detent plate 13 of the control shaft 10, and the other end may be engaged with the manual valve 4. However, since the rotation axes of the detent plate 13 and the bell crank 19 are orthogonal to each other, a biased force acts on the bell crank 19 only by contact with a pin or the like, and the smooth rotation of the bell crank 19 may be hindered. Therefore, it is desirable to use the slide core 16.

Here, the structure for positioning the detent plate (first manual valve lever) 13 and bell crank (second manual valve lever) 19 in the above configuration will be described in detail. The axial movement of the detent plate 13 is, as shown in FIG.
3, one end surface in the axial direction is positioned by the peripheral surface of the slide core 16, and the other end surface of the detent plate 13 is positioned by a bearing boss 1b of the transmission case 1 bearing the control shaft 10. Therefore, the movement of the detent plate 13 in the vehicle width direction is restricted, and the pin 17 at one end of the detent plate 13 can be prevented from coming off the slide core 16 and the roller 15 coming off the detent groove 13b.

The rear end surface of the rotating shaft 21 of the bell crank 19 is positioned on the mating surface 6a of the extension housing 6 fixed to the rear end surface of the transmission case 1 as shown in FIG. The front end face of the bell crank 19 is provided with a lever holding collar 28 of the parking support 28.
a. Therefore, the movement of the bell crank 19 in the front-rear direction is restricted, and the bell crank 19
Pin 20 at one end of the slide core 16 comes off the slide core 16,
The pin 22 at the other end can be prevented from coming off the manual valve 4. As described above, in order to restrict the axial movement of the detent plate 13 and the bell crank 19, no special parts are required, and positioning is performed by using existing parts. Inexpensive and simple structure can be realized.

FIGS. 8 to 11 show an example in which the manual valve lever positioning structure according to the present invention is applied to an FF type automatic transmission, that is, an automatic transmission in which a control shaft and a manual valve are arranged at right angles. In the drawings, the same components as those in FIGS. 3 to 7 are denoted by the same reference numerals, and description thereof will be omitted.

In the case of the FF type automatic transmission, since the control shaft 10 and the manual valve 4 are arranged at right angles, the rotation of the detent plate 13 can be manually controlled without using the slide core 16 or the bell crank 19. It can be directly converted to the axial movement of the valve 4. Therefore, the pin 3 is attached to the sector 13a of the detent plate 13.
0 is protruded, and this pin 30 is directly engaged with the engagement groove 4 a of the manual valve 4. In addition, unlike the detent plate 13 for FR, the detent plate 13 is not provided with the extension 13c having the pin 17.

As shown in FIG. 9, the control shaft 10 is provided so as to extend in the vehicle width direction of the transmission case 1, and one end of the control shaft 10 is provided on a side cover 31 fixed to a side surface of the transmission case 1. Mating surface 31
a. On the other hand, the opposite side surface (the right side surface in FIG. 6) of the detent plate 13 is positioned against the edge 32a of the separate plate 32 provided between the valve bodies 2A and 2B. This edge 3
2a protrudes from the notch 2b of the upper and lower valve bodies 2A, 2B in the vehicle width direction. Therefore, since the edge portion 32a is provided, the material removal of the separate plate 32 does not deteriorate. In FIG. 9, the manual valve 4, the detent spring 14, and the like are omitted.

As described above, the detent plate 13 and the control shaft 10 are positioned in the axial direction by utilizing the existing parts such as the side cover 31 and the separate plate 32. Grooving and case drilling can be omitted, and there is no need to use additional equipment such as rollers. Therefore, there is an advantage that cost can be reduced.

[0029]

As is apparent from the above description, claim 1
According to the invention, in an automatic transmission in which the control shaft and the manual valve are arranged in a right angle direction, the axial movement of the control shaft and the manual valve lever is controlled by using the mating surface of the existing side cover and the separate plate. Position, so that it can be positioned without using separate parts such as rollers, preventing an increase in the number of parts, and because it does not require special processing such as shaft groove processing and case hole processing, so it is inexpensive. Can be configured. According to the second aspect, in the automatic transmission in which the control shaft and the manual valve are arranged in parallel, the axial movement of the second manual valve lever is positioned by the mating surface of the extension housing and the parking support. As in the case of the first aspect, the number of parts and the number of processing steps can be reduced, and the configuration can be made at low cost. Furthermore, in the case where the control shaft and the manual valve are arranged in parallel, the axial movement of the first manual valve lever is controlled by the peripheral surface of the slide core and the bearing boss of the transmission case. And the number of parts and the number of processing steps can be reduced, and the configuration can be made at low cost.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a conventional control shaft positioning structure.

FIG. 2 is an external perspective view showing a main shaft direction and a control shaft direction of an FR type and FF type automatic transmission.

FIG. 3 is a side view of the FR type automatic transmission to which the present invention is applied.

FIG. 4 is a sectional view taken along line IV-IV of FIG. 3;

FIG. 5 is a sectional view taken along line VV of FIG. 4;

FIG. 6 is a bottom view of FIG. 5;

FIG. 7 is a perspective view of a crank mechanism.

FIG. 8 is a side view of the FF type automatic transmission to which the present invention is applied.

FIG. 9 is a bottom view of the transmission of FIG. 8 with an oil pan removed.

FIG. 10 is an enlarged view of a part of FIG. 8;

11 is a sectional view taken along line XI-XI in FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Transmission case 1b Bearing boss 2, 2A, 2B Valve body 4 Manual valve 6 Extension housing 10 Control shaft 13 Detent plate (1st manual valve lever) 16 Slide core 19 Bell crank (2nd manual valve lever) 28 Parking support 31 Side cover 32 Separate plate

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Yasushi Yasumu 2-1-1 Taoyuan, Ikeda-shi, Osaka Daihatsu Kogyo Co., Ltd. F-term (reference) 3J067 AA01 AB11 BA58 DA12 DA15 DB18 DB29 FA05 FA06 FA27 FA57 FB83 FB90 GA01

Claims (3)

[Claims] An automatic transmission in which a control shaft and a manual valve are disposed in a direction perpendicular to each other, and converts the rotation of the control shaft into the axial movement of the manual valve to switch to each operation range. A manual valve lever having a pin that engages the manual valve is fixed, and one axial end surface of the control shaft is positioned at a mating surface of a side cover fixed to the transmission case. A manual valve lever positioning structure, characterized in that the other end face is positioned against a part of a separate plate provided between valve bodies. 2. An automatic transmission in which a control shaft and a manual valve are arranged in parallel, and the rotation of the control shaft is converted into the axial movement of the manual valve and switched to each operation range. A crank mechanism for converting the manual valve into axial movement is provided.
A first manual valve lever fixed to the control shaft, and swingably disposed about a shaft perpendicular to the control shaft, and one end swings in conjunction with the swing of the first manual valve lever; And an extension housing having a second manual valve lever having the other end engaged with an engagement portion of the manual valve, wherein one end surface of a shaft portion of the second manual valve lever is fixed to an end surface of the transmission case. Wherein the end face on the opposite side of the second manual valve lever is positioned by a parking support that guides a parking lock shaft that operates in the axial direction with the movement of the control shaft. Lever positioning structure. 3. An automatic transmission in which a control shaft and a manual valve are arranged in parallel, and the rotation of the control shaft is converted into the axial movement of the manual valve to switch to each operation range. A crank mechanism for converting the manual valve into axial movement is provided.
A first manual valve lever fixed to the control shaft, a slide core disposed movably in a direction perpendicular to the control shaft and having an engagement groove for engaging a pin provided on the first manual valve lever; The control shaft and the slide core are rotatably disposed about an axis in a direction orthogonal to the control shaft, and one end is engaged with the engagement groove of the slide core and the other end is engaged with the engagement portion of the manual valve. A second manual valve lever, one end surface of the first manual valve lever in the axial direction is positioned on the peripheral surface of the slide core,
A positioning structure for a manual valve lever, wherein the other end surface of the manual valve lever is positioned by a bearing boss of a transmission case bearing a control shaft.