JPH01247869A - Power transmission device for vehicle - Google Patents

Abstract

PURPOSE:To shorten a distance between the rotary shafts of a transmission mechanism by placing a bearing inside the secondary rotary shaft, for holding the secondary rotary shaft placed parallel with the first rotary shaft and at a side far from a clutch. CONSTITUTION:An input member 27 for inputting power from a clutch side is provided at one end of the first rotary shaft 7. The input means 27 provide a sprocket 28 for receiving the power transmitted from a shaft 2 via a chain 3 and a gear 29 for transmitting the power to the secondary rotary shaft 8 integrally. One end side of the secondary rotary shaft 8 is held by a projecting portion 31 from inside via a bearing 33, and the other end is held in the housing portion 5 of the transmission mechanism by a general bearing structure.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a clutch housing portion and a V! This invention relates to a width-frame power transmission device of a type in which a speed mechanism accommodating portion and a speed mechanism housing portion are arranged in parallel.

(Prior Art) Generally, a vehicle speed transmission device using a manual transmission mechanism transmits driving force from an output shaft of an engine to wheels via a clutch and a transmission mechanism. In such a power transmission device, for example, the actual distance is 1M (56
As shown in Publication No. 71432, a clutch accommodating portion that accommodates a clutch connected to the output shaft of the engine;
A transmission mechanism accommodating portion having first and second rotating shafts parallel to each other and having a plurality of transmission gears A7 arranged therein are arranged in parallel, that is, an engine output shaft and a clutch connected thereto. The rotating shafts of the transmission mechanism are arranged parallel to these (Q position) with respect to the shaft on the output side of the clutch, so that the power is transmitted from the shaft on the output side of the clutch to the transmission mechanism via the shaft on the output side of the clutch. It has been known for a long time.

In addition to the rear-mounted engine type EL II shown in the above publication, such a parallel type power transmission 5A system has a shorter length than a serial type power transmission device, such as a transverse engine type FFI. It has been adopted because it is advantageous in terms of layout.

In the device disclosed in the above publication, of the two rotating shafts of the transmission mechanism, the rotating shaft on the side far from the clutch is used as the output shaft, while the transmission is transmitted from the clutch output side to the rotating shaft on the side closer to the clutch. A human power member that receives power is integrally provided, and the rotating shaft near the clutch is used as an output shaft, and an input member is provided at one end of this rotating shaft so as to be rotatable with respect to this rotating shaft. It is also known that the rotating shaft on the side far from the clutch is interlocked with this manual member.

Furthermore, in the device disclosed in the above publication, power is transmitted from the clutch side to the transmission mechanism via a gear, but there are also devices in which power is transmitted from the clutch side to the transmission mechanism via a chain. Chain transmission has advantages such as lower noise than gear transmission.

(Problem to be Solved by the Invention) If the clutch accommodating part and the transmission mechanism accommodating part are arranged in parallel as described above, and in 6, in the case where power is transmitted from the clap side to the transmission mechanism by a chain, the transmission mechanism An input member including a sprocket around which the chain is wound is provided concentrically with one end of the first rotating shaft on the side closer to the clutch of the first rotating shaft. In this case, in order to ensure smooth power transmission, it is necessary to ensure that the appropriate chain winding angle is ensured, that is, the chain is bent correctly in line with the sprocket and aligned with the chain. It is necessary to increase the diameter of the sprocket installed at the input shrine to avoid applying excessive force. On the other hand, a second rotating shaft parallel to the first rotating shaft equipped with the input member has one end thereof close to the input member,
Generally, the structure of this part is such that the end of the rotating shaft is supported via a bearing from the outer circumferential side of the second rotating shaft. In order to avoid interference between the sprocket of the input member and the bearings arranged on the outer circumferential side of the input member, it is necessary to make the distance between the two rotating shafts relatively large.

Therefore, there is a problem in that the diameter of the transmission gear 7, which is disposed on both rotating shafts so as to mesh with each other, becomes larger, resulting in an increase in the size of the transmission mechanism as a whole.

In view of these circumstances, the present invention provides a dynamic horn transmission device in which a clutch accommodating part and a transmission mechanism accommodating part are arranged in parallel, and power is transmitted from the clutch side to the transmission mechanism by a chain. The purpose of the wrapping is to reduce the distance between the rotation axes of the transmission mechanism while ensuring the angle, thereby making it possible to make the device more compact.

(Means for Solving the Problems) In order to achieve the above object, the present invention arranges a clutch accommodating part and a transmission mechanism accommodating part in parallel, and also arranges a clutch accommodating part and a transmission mechanism accommodating part in the two transmission mechanism accommodating parts on the side closer to the clutch. A first rotating shaft and a second rotating shaft that is parallel to the first rotating shaft and located on the side far from the clutch are provided, and a plurality of sets of gears V for shifting are arranged on both rotating shafts, and Φ power transmission device configured to transmit power to a transmission mechanism via a chain, a manual member having a sprocket on one end side of the first rotating shaft that receives power from the clutch via the chain. is provided concentrically with the first rotating shaft, and one end side of the second rotating shaft is connected to the shaft via a bearing by a protruding portion that protrudes from the end wall of the transmission mechanism accommodating portion and projects into the second rotating shaft. I supported it.

[Effect]

According to the apparatus of the present invention having the above-mentioned configuration, the second rotary shaft located near the manpower member provided on one end side of the first rotating shaft is provided.
On one end side of the rotating shaft, a bearing etc. that pivotally supports the second rotating shaft is located inside the second rotating shaft, so that even if the distance between the two rotating shafts is relatively small, the input member Interference between the sprocket, etc. and the bearing, etc. that pivotally supports the second rotating shaft can be avoided.

(Embodiment) FIGS. 1 and 2 show an embodiment of the present invention. In these figures, 1 is a clutch accommodating portion fixed to the rear end of the engine E. is shaft 2
is rotatably supported, and a clutch (not shown) is disposed around this shaft 2, so that power from the engine is transmitted to the F shaft 2 via the clutch. A sprocket 4 is provided at the end of the shaft 2 for transmitting power to the transmission mechanism via a chain 3. Reference numeral 5 denotes a transmission mechanism housing section, which is arranged in parallel with the F-marked ludge housing section 1, and the transmission n side-taking housing section 5 and the clutch housing section 1 are integrally connected. At one end of the transmission mechanism accommodating portion 5, there is a transmission! A cover 6 constituting an end wall of the l-structure accommodating portion 5 is coupled thereto, and this cover 6 is integrally provided with a chain case lining portion 6a that covers the chain 3.

Inside the transmission mechanism housing section 5, there is a first
The rotating shaft and the second rotating shaft on the side far from the clutch are arranged in parallel, and these rotating shafts and the shaft 2 in the clutch accommodating portion 1 are located in parallel with each other at a predetermined distance.

In the embodiment shown in the figure, the first rotating shaft is the main shirt 1-7 corresponding to the output shaft, the F2 second rotating shaft is the countershaft 8 that is interlocked with the post-input member 27, and the countershaft 8 is the clutch It is designed to rotate constantly in conjunction with the shaft 2 on the output side.

The force-kunta shaft 8 has a counter 1st gear 11.
, a counter second speed gear 12, a counter third speed gear 13, a counter overdrive gear 14J3, and a counter reverse gear 15 are provided. - direction, main shaft 7
1 meshing with the corresponding gear of the countershaft 8.
A reverse gear 20 interlocks with a speed gear 16, a second speed gear 17, a third speed gear 18 and an overdrive gear 19, and a counter reverse gear 15 via a reverse idler 20a.
are numbered so that they can be rotated freely. Furthermore, a 1st and 2nd speed loading device 21 for engaging and disengaging the 1st and 2nd speed gears 16 and 17 from the main shaft 7, and a 3rd speed gear 18 and a manual member 27 to be described later are connected to the main shaft 7. a first-speed/second-speed volume regulator 22 that engages and disengages from the main shaft 7; and an overdrive-reverse III device 2 that engages and disengages the overdrive and reverse gears 19 and 20 from the main shaft 7
3 are arranged with respect to the main shaft 7, and f, ! 1
3 Synchronizer @21~2 is activated by an operating mechanism not shown in the diagram according to the operation.
3 is activated.

The main shaft 7 is rotatably supported in the transmission mechanism housing part 5 via bearings 24, 25, 26,
On one end side of this main shirt 1-7 (right end side in the figure),
Input 81S material 2 for inputting power from the clutch side
7 is provided concentrically with the main shaft 7. This input member 27 integrally includes a soot socket 28 that receives power transmitted from the shaft 2 via the chain 3, and a gear 29 that transmits this power to the counter shaft 8. It is equipped so that it can rotate freely. And the sprocket 4 of the shaft 2
The chain 3 is wound around the input member 27 and the sprocket 28 of the input member 27.

Further, the E-counter shaft 8 is connected to the input member 27 by the gear 30 provided at one end meshing with the gear A gear 29 of the 1 input member 27, and is inserted into the transmission mechanism accommodating portion 5. It is rotatably supported. In particular, the portion on which the countershaft 8 is pivotally supported at one end near the input member has the following structure. In other words, as shown in FIG.
A protrusion 31 that protrudes toward is integrally fixed, and a recess 32 corresponding to the protrusion 31 is formed at one end of the countershaft 8 (the right end in the figure). The tip of the protrusion 31 protrudes into the interior of the protrusion 32 . A bearing 33 is interposed between the outer peripheral surface of the protrusion 31 and the inner peripheral surface of the recessed hole 32. In this way, one end side of the countershaft 8 is pivotally supported by the protrusion 31 from the inside via the bearing 33. The other end of the countershaft 8 is supported by the transmission mechanism accommodating portion 5 using a general shaft support, that is, supported from the outer circumferential side of the countershaft 8 via bearings 34 and 35.

Reference numeral 36 denotes an oil path for supplying lubricating oil to the chain 3, which is formed in a ring shape and whose four ends are fixed to the fixed frame 37 with the tip facing inward of the chain 3. A part of the lubricating oil splashed up by the gears of the counter shirts 1-8 and the main shut 7 is guided to the chain 3 side by the oil path 36, and the chain transmission mechanism is moistened. There is.

According to the power transmission device of the present embodiment as described in 1, the clutch accommodating portion 1 and the transmission mechanism accommodating portion 5 are arranged to be suitable for the layout of a platform etc. applied to, for example, an FF vehicle with an engine sideways.
are arranged in parallel, and the shaft 2 on the clutch side
Power is transmitted from the chain 3 to the input member 27 of the transmission mechanism. In this way, power is transmitted from the clutch side to the transmission mechanism side! When the chain is set to 4 mm and is carried out at the main shaft 7, in order to secure the appropriate angle, it is necessary to attach the chain to the manual member 27 arranged concentrically with the main shaft 7. It is necessary to provide a sprocket 28 with a somewhat large diameter. And this human power member 27
The portion that pivotally supports one end of the force countershaft 1-8 at a position close to the sprocket 28 must be provided so as not to interfere with the sprocket 28. On the one end side of the countershaft 8, which has such restrictions, the countershaft 8 is pivotally supported from inside via a bearing 33 by the protrusion 31 protruding from the end wall of the transmission mechanism accommodating portion 5. Even if the distance between the axes of the shaft 8 is made as small as possible, the distance between the bearing 33, etc. and the sprocket 28 of the input member 27 will be reduced.

J5, in the embodiment shown in the figure, the first 1. The first shaft behind the second shaft, which is close to the gangway, is the main shut 7, which corresponds to the output shaft, and the second shaft, which is far from the clutch, is the counter shaft 8, which is constantly linked to the shut 2 on the clap side. The arrangement of the countershaft 7 and the countershaft 8 may be reversed from that of the above embodiment. In the case of a clutch, a manual member consisting of a sprocket is fixedly installed on the countershaft located on the side close to the clutch, while one end side of the main shaft (output shaft) located on the side far from the clutch is installed. , it is sufficient to support the countershaft from the inside with a structure similar to that of the one end side of the countershaft in the embodiment shown in the figure.

(Effects of the Invention) As described above, the present invention provides a parallel type power transmission device in which power is transmitted from the clutch side to the transmission mechanism by a chain, in which a chain is connected to the first rotating shaft of the transmission mechanism on one end side. ,
While a human-powered PI 144 with a sprocket at the end is provided, the - end side of the second rotating shaft located near this human-powered member is
Since the protruding shaft that protrudes from the transmission mechanism accommodating part is rotated from the inside via a bearing, the sprocket of the manual component mentioned above must be made with a relatively large diameter to ensure proper winding of the chain. Even if the sprocket is formed, it is possible to reduce the distance between the two rotating shafts while avoiding interference between the sprocket and the shaft support portion on one end side of the second rotating shaft. Therefore, KiFf can be made sufficiently compact.

[Brief explanation of the drawing]

The drawings show an embodiment of the invention, in which Fig. 1 is a side view of the entire power transmission device, and Fig. 2 is a cross-sectional view taken along the line - - - in Fig. 1. 1...Clutch housing part, 3...Chain, 5...
Transmission mechanism housing part, 7... Main shirt l- (first rotating shaft), 8... Counter shaft (second rotating shaft), 27
...Manpower member, 28...Sprocket, 31...
Projection, 32... recessed hole, 33... bearing.

Claims (1)

[Claims] 1. A clutch accommodating part and a transmission mechanism accommodating part are arranged in parallel, and a first rotating shaft located in the transmission mechanism accommodating part near the clutch, and a first rotating shaft located parallel to this first rotating shaft and far from the clutch A second rotating shaft located on the side, a plurality of sets of transmission gears are arranged on both rotating shafts, and power from the clutch is transmitted to the transmission mechanism via a chain. In the transmission device, an input member including a sprocket that receives power from the clutch via the chain is provided at one end of the first rotating shaft concentrically with the first rotating shaft, and an input member is provided at one end of the second rotating shaft. What is claimed is: 1. A power transmission device for a vehicle, characterized in that the side is pivotally supported via a bearing by a protruding portion that protrudes from an end wall of a transmission mechanism accommodating portion and projects into the inside of the second rotating shaft.