JPS60252865A - Speed changer equipping belt-type continuously variable transmission and auxiliary speed change gear - Google Patents

Abstract

PURPOSE:To enable each speed changer to be separately disassembled and reassembled so as to permit repair work to be easily performed, by separably forming power transmission parts of the belt-type continuously variable transmission (CVT) and the auxiliary speed changer and containing both the speed changers in a separate chamber. CONSTITUTION:A belt-type continuously variable transmission (CVT) 100 is arranged in a chamber 102 formed by a main case member 12 and a cover member 14. And this speed changer 100 connects a rotary shaft 104 of its input pulley 110 by a spline with the coupling member of a fluid coupling device 50 while a rotary shaft 180 of the output pulley 150 also by a spline with a sun gear 214 in an auxiliary speed changer 200. Accordingly, only the belt-type CVT can be replaced and repaired by removing the cover member 14 from the main case member 12.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a transmission equipped with a belt-type continuously variable transmission and an auxiliary transmission, which is mounted on a vehicle such as an automobile.

[Conventional technology]

2. Description of the Related Art Transmissions equipped with a belt-type continuously variable transmission and an auxiliary transmission have recently been proposed as transmissions for vehicles such as automobiles.

A belt-type continuously variable transmission has a circumferential groove with a ■-shaped cross section on one rotating shaft and the other rotating shaft.

A coupler and an output pulley are provided, and a transmission belt is wound around the circumferential grooves of the input and output pulleys. By relatively changing the width of the circumferential grooves on the ■-shaped cross sections of the input pulley and output pulley, the rotational power is transmitted at a stepless speed from one rotating shaft to the other. It has become.

The belt type continuously variable transmission is configured to only change speed in one direction, and cannot change speed in reverse, that is, to change forward or backward. For this reason, in order to use it as a transmission for vehicles such as automobiles, it is necessary to attach the belt-type continuously variable transmission.
An auxiliary transmission device including a forward/reverse switching transmission mechanism is provided. The auxiliary transmission is disposed on either the input side or the output side of the belt type continuously variable transmission. Recently, there have been many proposals to place belt-type continuously variable transmissions on the output side, since they can be made smaller. Further, the auxiliary transmission is often provided with a forward/reverse switching transmission mechanism and a transmission mechanism with approximately two forward speeds. For this reason, the auxiliary transmission is often configured using a planetary gear device, and the planetary gear device is equipped with a clutch device and a brake device.

As mentioned above, when a belt-type continuously variable transmission and an auxiliary transmission are provided as a transmission, the belt-type continuously variable transmission and the auxiliary transmission are usually placed together in one chamber formed by a case member. It is stored and installed. - Since the belt-type continuously variable transmission and the auxiliary transmission are housed together, the power transmission connection is often integrally connected. Also,
Power transmission connections between the belt-type continuously variable transmission and the auxiliary transmission and other devices may likewise be made integrally. That is, for example, the components of the auxiliary transmission are integrally attached to the rotating shaft of the output pulley of the belt-type continuously variable transmission, and the belt-type continuously variable transmission and the auxiliary transmission are separated for each device. The configuration is such that it is not possible.

[Problem that the invention seeks to solve]

As mentioned above, the power transmission connections between the belt-type continuously variable transmission and the auxiliary transmission and with other devices are integrally connected, and the connections cannot be separated for each device. Even when replacing or repairing either the belt-type continuously variable transmission or the auxiliary transmission, the other devices must also be disassembled and assembled, making the replacement and repair work difficult. There is a problem.

Therefore, the problem to be solved by the present invention is to enable the belt type continuously variable transmission device and the auxiliary transmission device to be disassembled and assembled individually, so that replacement and repair work can be easily performed. The goal is to make it possible.

[Means for solving problems]

The present invention has been achieved by housing and installing a belt-type continuously variable transmission device and an auxiliary transmission device in separate and independent chambers, and connecting the two devices to each other and to other devices in a separable manner. , which aims to solve the above-mentioned problems.

Specifically, the transmission including the belt type continuously variable transmission and the auxiliary transmission according to the present invention takes the following measures.

In other words, there is a belt-type continuously variable transmission in which the power is passed through a transmission bevel between the input pulley and the output pulley, and the speed is transmitted from the input pulley to the output pulley in a continuously variable manner, and the input side of the belt-type continuously variable transmission. Or, in a transmission having an auxiliary transmission located on either one of the output sides and equipped with at least a forward/forward switching transmission mechanism, the belt-type continuously variable transmission and the auxiliary transmission are formed in separate chambers by a case member. The belt-type continuously variable transmission and the auxiliary transmission are housed in a separate belt-type continuously variable transmission and auxiliary transmission, and the power transmission connections between the belt-type continuously variable transmission and the auxiliary transmission and with other devices can be separated Take measures to connect to.

[Effect]

According to the above-mentioned means, the belt type continuously variable transmission and the auxiliary transmission are housed and installed in the belt type continuously variable transmission and the auxiliary transmission which are separate chambers with their power transmission connections being separable. Therefore, each device can be disassembled and assembled individually without affecting other devices.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

1 and 2 show an embodiment according to the invention.

FIG. 1 shows a skeleton diagram of a transmission equipped with a belt continuously variable transmission and an auxiliary transmission. FIG. 2 shows a sectional view of the detailed structure of the transmission shown in FIG. 1, FIG. 2(a) shows a sectional view of the upper part, and FIG. 2(b) shows a sectional view of the lower part.

As shown in FIG. 1, this embodiment is broadly divided into a fluid coupling device 50 and a belt type continuously variable transmission device 100.
, an auxiliary transmission 200, a reduction gear 300, and a differential gear 350.

Each of these devices is installed within the case member of the transmission. The case member is fluid coupling case member 1
0, a main case member 12, and a cover member 14.

Each of these case members forms a chamber that accommodates each device. A fluid coupling device chamber 52 is formed by the fluid coupling case member 10, and a fluid force/knob ring device 50 is disposed therein.

A belt-type continuously variable transmission chamber 102 is formed by the main case member 12 and the cover member 14, and the belt-type continuously variable transmission 1
00 is placed. Further, as seen in FIG. 1, an auxiliary transmission chamber 202 is formed by the main case member 12 at a lower position of the main case member 12, and an auxiliary transmission 200 is disposed therein. Further, as seen in FIG. 1, a differential chamber 302 is formed by the fluid coupling case member 10 at a lower position of the fluid coupling case member 10, and a reduction gear device 300 and a differential gear device 350 are arranged. There is.

Next, each device will be explained.

Fluid Coupling Device 50 The fluid coupling device 50 includes a fluid coupling 54 and a direct coupling clutch 60. The fluid coupling 54 includes a pump impeller 56 and a turbine impeller 58. The pump impeller 56 is connected to an engine crankshaft (not shown), and the turbine impeller 58 is connected to the engine crankshaft (not shown).
is connected to a rotating shaft 104 of an input pulley 110, which serves as an input shaft of the belt type continuously variable transmission 100. As is well known, the fluid coupling 54 transmits power via fluid (oil), and transmits the rotational power of the engine to the belt type continuously variable transmission 100.

The direct coupling clutch 60 directly transmits the rotational power of the engine to the rotating shaft 104 of the input pulley 110 by its operation. When power is transmitted via the fluid coupling 54, since it is a fluid transmission, it is transmitted with slippage and deceleration; however, when using the direct coupling clutch 60,
It is transmitted as is without any slippage. This direct clutch 6
0 is provided to improve the so-called fuel consumption rate, and is normally activated when driving at high speeds.

Note that, as shown in FIG. 2 fa), the oil pump 70 is located at the rear position of the fluid coupling 54 (FIG. 2 fa).
It is located at the left position (when viewed from the front). oil pump 70
is driven by a rotation transmission member 72 integrated with the pump impeller 56 to generate hydraulic pressure.

The oil pressure is used to control a belt-type continuously variable transmission 100 and an auxiliary transmission 200, which will be described later.

Fluid coupling device 5 of this embodiment explained above
0 is arranged in an independent fluid force/knob ring device chamber 52 formed by the fluid coupling case member 10, and the turbine impeller 58 of the fluid coupling 54 and the direct coupling clutch 60 are splined to the rotating shaft 104. When fitted, they are integral in the rotational direction but slidable in the axial direction, so by removing the fluid coupling case member 10 from the engine (not shown), it can be used with other belt-type Gear transmission 100
The fluid coupling device 50 can be independently removed for replacement, repair, etc. without affecting the assembled state of the fluid coupling device 50.

Belt Type Continuously Variable Transmission 100 The belt type continuously variable transmission 100 includes an input pulley 110 and an output pulley 15'0. Enter the turnip.

- The pulley 110 consists of a fixed pulley 112 and a movable pulley 114. The fixed pulley 112 is formed integrally with the rotating shaft 104, and the movable boo IJ114 is connected to the rotating shaft 1.
It is fitted and attached to 04. As best shown in FIG. 2(a), the rotating shaft 104 and the movable boob IJ 114
This means that the pawl 120 is engaged with and attached to the axial grooves 117 and 118 formed on both sides, and as a result, the movable pulley 114 is movable in the axial direction with respect to the rotating shaft 104; The direction is unified.
The rotating shaft 104 of the input coupler 110 is rotatably supported by the partition wall member 12a of the main case member 12 and the cover member 14 on both sides via bearings 122 and 124.

Opposing pulley surfaces 112a and 114a of the fixed pulley 112 and the movable pulley 114 are formed in a circumferential groove 116 having a V-shaped cross section. A transmission belt 190 is wound around this circumferential groove 116. Note that the width of the circumferential groove 116 is the same as that of the movable pulley 114.
By moving the transmission belt 140 in the axial direction, the effective diameter around which the transmission belt 140 is wound can be changed. Second
In Figure +8), the input pulley 110 has its center line C
The effective diameter is shown to be different between the upper and lower portions of L. The illustrated state in the upper half shows the minimum effective diameter state of the power transmission belt 190, and the illustrated state in the lower half shows the maximum effective diameter state. Note that the movable pulley 114 is moved in the axial direction by a hydraulic cylinder device 130 at the back.

The output pulley 150 is also configured roughly in the same way as the manual pulley 110. That is, it consists of a fixed pulley 152 and a movable boolean IJ 154, and the movable pulley 154 is fitted and attached to a rotating shaft 180 that is integrated with the stationary boolean IJ 152. Movable boo IJ
154 is a movable pulley 114 of the inlet IJ 110
As in the case of axial groove 156,158 and ball 16
0, it is attached to the rotating shaft 180 integrally in the rotational direction but movable in the axial direction. Note that the arrangement of the fixed pulley 152 and the movable pulley 154 of the output pulley 150 is left and right opposite to that of the large force pulley 110. This is the circumferential groove 1 of the large force pulley 110 and the output pulley 150.
This is to keep the position state of the transmission heald 190 in a straight state when the width of 16.166 is changed.

The rotation shaft 180 of the output pulley 150 is also the same as the manual pulley 110.
Similarly, bearings 162.16 are attached to the partition wall member 12a of the main case member 12 and the cover member I4 on both sides.
4.

As seen in FIG. 2(a), the right end portion of the rotating shaft 180 is formed separately from an auxiliary transmission device 200 and an output shaft 310 of a reduction gear device 300, which will be described later, so that it can be extracted from these devices. There is. That is, they are formed to be separable.

Further, opposing pulley surfaces 152a and 154a of the fixed pulley 152 and the movable pulley 154 have a circumferential groove 166 having a V-shaped cross section.
The circumference 1616 of this output pulley 150 is
6 and the transmission belt 190 in the circumferential groove 116 of the manual pulley 110.
is wrapped around. The effective diameter of the output pulley 150 at the position around which the transmission bell 190 is wound can also be changed by moving the movable pulley 154 in the axial direction. The axial movement of the movable pulley 154 is controlled by a hydraulic cylinder device 170 provided at the back. In FIG. 2+al, the illustrated state of the upper half of the output pulley 150 indicates the minimum effective diameter state, and the illustrated state of the lower half indicates the maximum effective diameter state.

As shown in FIG. 2(a), the power transmission belt 190 is composed of an endless carrier 192 and a power transmission block 194. The endless carrier 192 is formed by laminating a plurality of thin metal hoops. A plurality of power transmission blocks 194 are arranged adjacent to each other in a daisy chain on the pair of endless carriers 192 formed in this manner, thereby forming a power transmission belt 190.

The belt-type continuously variable transmission 100 is configured as described above, so that the large cub-I
Power is transmitted from J 110 to output pulley 150,
At this time, by changing the effective diameter of the input pulley 110, the speed is continuously changed and transmitted to the output pulley 150.

By the way, since the belt type continuously variable transmission 10-0 described above is arranged in an independent belt type continuously variable transmission chamber 102 formed by the main case member 12 and the cover member 14, the cover member 14 is By removing it from the main case member 12, other fluid coupling devices 50,
The belt type continuously variable transmission 100 can be independently removed for replacement, repair, etc. without affecting the assembled state of the auxiliary transmission 200. That is, although the rotating ring 104 of the input pulley 110 extends to the fluid cassopling device 50, the fluid coupling device 5
It is removably (separably) connected to the connecting member 0 by spline fitting, etc., and the output pulley 15
0 rotation shaft 180 also extends to an auxiliary transmission 200, which will be described later.
Because it is removably (separably) connected to the sun gear 214 by spline fitting, the belt type continuously variable transmission 100 can be disassembled and assembled independently without affecting other devices. Furthermore, the belt type continuously variable transmission 100 of the embodiment described above also has an input pulley 110.
and the output pulley 150 are fixed pulleys 1 and 150, respectively.
Since the rotating shaft 104.180 integrated with 12.152 is directly supported by the partition wall member 12a of the main case member 12 and the cover member 14 on both sides thereof, the large force pulley 110
Thus, the support accuracy of the output pulley 150 can be improved.

That is, in the past, one end of the rotating shaft 104, 180 was generally supported directly on the case member of the transmission via a bearing, but the other end was supported without a case member. Since other devices such as a transmission are provided, the other end is supported via the members of these other devices.

For this reason, the distance between the supports at both ends of the input pulley 110 or the output pulley 150 becomes long, resulting in a decrease in rigidity, and since the input pulley 110 or the output pulley 150 is supported via other members, the support precision also deteriorates. However, in the case of this embodiment, since both the large force pulley 110 and the output pulley 150 are directly supported by the case members on both sides, the distance between the supports is greater than when they are supported via other members as in the past. becomes shorter and becomes more rigid.

Therefore, the large force pulley 110 and the output pulley 150 are precisely arranged at predetermined positions, and even during power transmission,
Since deflection of the transmission belt 190 due to load is prevented, reduced or reduced, deviation from the installation position is prevented or reduced. As a result, the transmission bell 190 can rotate in a straight line without meandering, and the durability of the transmission bell 190 can be improved.

In other words, when the transmission bell (19-0) rotates in a meandering manner, the hoop forming the endless carrier 192 moves left and right, and the end surface of the hoop touches the power transmission block 194.
This contact with the neck portion 194a, which is the abutment site, causes fatigue, resulting in decreased durability. However, the transmission belt 190
When rotating in a straight line, the endless carrier 19
The second hoop does not move from side to side, so the hoop end face never comes into contact with the neck 194a of the power transmission block 194, preventing fatigue and improving durability.

Auxiliary transmission device 200 The auxiliary transmission device 200 is arranged on the output side of the belt type continuously variable transmission device 100, and includes a Ravignio type compound planetary gear device 210, two brake devices W230.240, and one clutch. It consists of a device 250.

The Ravignio type compound planetary gear set 210 has a first sun gear 212 and a second sun gear 214, a first planetary gear 216 that meshes with the first sun gear 212, and a first planetary gear 216 that meshes with the second sun gear 214. A second planetary gear 218 , a ring gear 220 meshing with the first planetary gear 216 , a first planetary gear 216 and a second planetary gear 21
8 is rotatably supported by each element of the sheath carrier 222.

Each element of the above-described Ravignio type compound planetary gear device 210,
Two brake devices 230, 240 and one clutch device 250 are connected to the rotating shaft 180 of the output turn-1J150.
and the output shaft 310 of the reduction gear device 300 are connected as follows.

The first sun gear 212 is connected to the rotating shaft 180 via a clutch device 250, and the second sun gear 214 is directly connected to the rotating shaft 180 by spline fitting. Further, the first sun gear 212 is provided with a brake device 230 between it and the partition wall member 12a. Similarly, ring gear 2
20 is provided with a brake device 240 between it and the partition wall member 12a.

The carrier 222 serves as an output member and is connected to the output shaft 310 of the reduction gear device 300 by spline fitting. That is, the carrier 222 and the output shaft 310
They are separably connected for power transmission.

With the above-mentioned connection configuration, the auxiliary transmission device 200 includes two brake devices 230 and 240 and one clutch device 2.
By selectively operating 50, two forward speeds and one reverse speed are obtained.

First forward speed is established by placing the brake device 230 in an activated state and the clutch device 250 and brake device 240 in an inactive state. In this state, rotational power is input from the second sun gear 214, and the second sun gear 214 rotates the first planetary gear 216 and the second planetary gear 218, and the brake device 2
The orbital rotation that planetarily rotates on the first sun gear 212 fixed by the carrier 222 is decelerated and taken out to the output shaft 310.

11 Second forward speed Established by setting the clutch device 250 in the activated state and the brake devices 230 and 240 in the non-activated state. In this state, rotational power is simultaneously input from the first sun gear 212 and the second sun gear 214, and the Ravignio type compound planetary gear set 210 is in an integrally rotating state. Therefore, the input rotation is directly output to the carrier 222.

Reverse Brake device 240 is activated, clutch device 2
50 and the brake device 230 are deactivated. In this state, rotational power is input from second sun gear 214, which rotates first planetary gear 216 and second planetary gear 218, and internal teeth of ring gear 220 fixed by brake device 240. The orbital rotation that rotates planetarily above is taken out from the carrier 222 in a reverse rotation state and at a reduced speed.

By the way, the auxiliary transmission device 202 that accommodates the auxiliary transmission device 200 described above is also connected to the partition wall member 12a of the main case member 12.
Since it is formed in an independent chamber, replacement, repair, etc. can be performed without affecting the assembled state of other devices such as the belt type continuously variable transmission 100, fluid coupling device 50, and reduction gear device 300. It can be performed. That is, the power transmission connection between the auxiliary transmission device 200 and the adjacent device is firstly that the output pulley 150ψ rotary wheel 180 of the belt type continuously variable transmission device 100 is connected to the second sun gear 21.
4 are separably connected by spline fitting,
Further, since the carrier 222 is separably connected to the output shaft 310 of the reduction gear device 300 by spline fitting, the auxiliary transmission device 200 can be installed without affecting the assembled state of other adjacent devices. Disassembles alone,
Can be assembled.

Further, since the auxiliary transmission 200 of the above-described embodiment is provided at a position in the power transmission path after the belt type continuously variable transmission 100, the belt type continuously variable transmission loO can be made small. That is, the auxiliary transmission 200 is
It may be installed in a power transmission path position before the belt-type continuously variable transmission 100, but in this case, since the torque is increased by the auxiliary transmission 200, the belt-type continuously variable transmission 100 is installed in a large capacity It becomes necessary to configure it in a large size. However, in this embodiment, since the torque is increased after the belt type continuously variable transmission 100, the belt type continuously variable transmission 100 requires less capacity and can be made smaller.

In addition, an auxiliary speed change bag 2 is provided in front of the belt type continuously variable transmission 100.
200 is provided, the belt type continuously variable transmission 1
Since the transmission belt 190 of 00 rotates in forward and reverse directions, the use of the transmission heald 190 may be severe and its durability may be reduced. However, in the case of this embodiment, since the forward/reverse switching is performed after the belt-type continuously variable transmission 100, the transmission bell 190 always rotates in the same direction, which reduces the durability of the transmission bell 190. can be improved. 1. In this embodiment, a case has been described in which the auxiliary transmission device 200 is provided on the output side of the belt type continuously variable transmission device 100, but of course, it is also possible to place it on the input side of the belt type continuously variable transmission device 100. It's okay.

Note that the clutch device 25 that constitutes the auxiliary transmission device 200
0 and the brake device 240 are configured with a well-known friction multi-plate engagement type, and the brake device 230 is configured with a well-known brake band type.

Reduction gear device 300 In the deceleration gear device 300, a gear 312 provided on an output shaft 310 meshes with a first gear 322 of an intermediate shaft 320, and a second gear 324 of the intermediate shaft 320 provides final reduction. It is configured to mesh with a gear 330. The meshing of each of these gears is configured to rotate at a reduced speed. As a result, the rotation from the auxiliary transmission device 200 is decelerated by the reduction gear device 300 and transmitted to the differential gear device 350.

The left end of the output shaft 310 is connected to the inner end of the carrier 222 of the Ravignio type compound planetary gear set 210 by spline fitting, and is integral with the shaft in the rotational direction. It is possible to slide in this direction. Further, the right end of the rotating shaft 180 is fitted into the axial center of the output shaft 310, and a seal ring 308 is provided, and this fitting is such that it is slidable in the rotational direction as well.

Note that the oil passage 314 provided at the axial center of the output shaft 310 is an oil passage for lubrication.

Differential Gear Device 350 The differential gear device 350 is provided in the final reduction gear 330 with a well-known configuration. That is, binions 356 and 358 supported by a binion shaft 360 mesh with a pair of left and right side gears 352 and 354, and rotational power is transmitted from the differential case 362, through the pinion shaft 360 and the binions 356 and 358, to the side gears 352 and 358. 354
from the side gears 352, 354 to the drive shaft 37.
0.372 and is transmitted to wheels (not shown). and,
Differential rotation of the left and right wheels is allowed by rotation of the binions 356 and 358.

〔Effect of the invention〕

As detailed above, according to the present invention, the transmission including the belt-type continuously variable transmission and the auxiliary transmission, which constitute the transmission, and the auxiliary transmission, each having a power transmission connection that is separably connected. Because each device is housed in an independent belt-type continuously variable transmission room and an auxiliary transmission room, each device can be disassembled and assembled individually without affecting other devices. Therefore, when replacing or repairing, only the devices that require replacement or repair can be targeted, and the replacement or repair work can be performed easily.

[Brief explanation of the drawing]

Fig. 1 is a skeleton diagram of a transmission showing an embodiment of the present invention, Fig. 2 shows a detailed structure of this embodiment, Fig. 2 ia)
is a cross-sectional view of the upper part of Fig. 1, and Fig. 2 (bl is the first
FIG. 3 is a cross-sectional view of the structure of the lower part of the figure. Explanation of symbols 10----Fluid coupling case member (case member) 12----Raw case member (case member part 12a...
- Partition wall member of raw case member (case member) 14--- One cover member (case member) 100---
--- Belt type continuously variable transmission 102 --- Belt type continuously variable transmission chamber 1, 10 --- Human pulley 150 --- m- Output pulley 199 --- Transmission belt 200---1 Auxiliary transmission 202---1 Auxiliary transmission room Applicant: Toyota Motor Corporation 10-111 Funoshi-Cub song case P material 12-
111 Main K-Mata 8 door material 12a--Ichio K-Hi VP talent's difference 14--
-Cover H 1 year old 110 years old---One pair of capuli 150----, cuff °-So 190----Im moving health L and blade---2 years old, auxiliary change weight 2o2---- --ahelpttt4t 1. 1' Figure 1

Claims (1)

[Claims] 1. A belt-type continuously variable transmission device in which a transmission belt is passed between the input pulley and the output pulley to transmit continuously variable speed from the large-power pulley to the output pulley, and the input side or output of the belt-type continuously variable transmission device. In the transmission, the belt-type continuously variable transmission and the auxiliary transmission are located in separate chambers by a case member. The belt-type continuously variable transmission and the auxiliary transmission are housed in a separate belt-type continuously variable transmission and auxiliary transmission, and the power transmission connections between the belt-type continuously variable transmission and the auxiliary transmission and with other devices are separated A transmission equipped with a belt type continuously variable transmission and an auxiliary transmission, characterized in that they are freely connected.