KR20000001330U - Power take-off of manual transmission - Google Patents

Abstract

The present invention relates to a power take-off device of a manual transmission, which is powered on one side of the manual transmission (3) having a main shaft (30) and a sub-shaft (20) by power connection to the sub-shaft (20) of the manual transmission (3). A four-stage gear (22) on the sub-shaft (20) of the manual transmission (3); A four-stage idle gear 100 which is engaged with the four-stage gear 22 and idlely installed as a fixed shaft 101 and a bearing 102 inside the transmission case 3a; A drive shaft (70) integrally provided with the gear (71) meshed with the four-axis idle gear (100) and having a front end supported by a bearing (81) in the housing (80); An output shaft 72 supported by bearings 82 at the rear end of the drive shaft 70 and supported by the bearings 84 and 85 at the housing 80 and the cover 83 provided at the rear end of the housing 80. It is configured to include, so that the flow of power is made in the order of the manual transmission sub-shaft 20 → sub-axis four-stage gear 22 → sub-axis four-stage idle gear 100 → drive shaft 70 → output shaft 72. In addition, the output shaft 72 and the cover 83 between the bearing 84 and the bearing 85 is provided with a speedometer drive gear 73 and a speedometer driven gear 74, the sleeve 52 It is characterized in that the connecting port 68 for connecting the compressed air supply line to one outer circumference of the cylinder 65 for sliding) is screwed into three places at predetermined intervals.

Description

Power take-off of manual transmission

The present invention relates to a power take-off system of manual transmission. In particular, the bending stiffness and bearing stiffness of the drive shaft and the output shaft are improved, and the rotation speed of the drive gear is easily controlled. It relates to a power take-off device of a manual transmission with convenient connection.

The power take-off of the manual transmission is mainly attached to the manual transmission in heavy trucks or special vehicles, and withdraws the power from the manual transmission, other machinery installed in the vehicle, auxiliary equipment or other mechanisms prepared separately without being installed in the vehicle. It is used as a device to drive the.

1 shows a conventional example of the installation structure and the power transmission structure of the power take-off of a two-axis five-speed manual transmission, and this manual transmission 3 has its front in the rear of the engine 1. It is mounted through the clutch portion 2 to rotate the rear propulsion shaft 4 at an appropriate speed ratio.

As described above, the manual transmission 3 is always driven by the main drive gear 11 of the transmission input shaft 10 rotated by the engine 1, so that the drive gear 21 of the sub shaft 20 is always driven. Gears 31 to 35 on the main shaft 30 engaged with the gears 22 to 25 are rotated so that the gears 22 to 25 formed integrally with the 20 are rotated to support the bearing 36, respectively. Driven by idling, and one of the synchronous devices 37 to 39 sliding on the main shaft 30 moves to integrally couple the gears on the main shaft 30 to the main shaft 30 corresponding to the desired shift stage. As a result, the engine power is output to the main shaft 30, thereby rotating the propulsion shaft 4 connected to the rear end of the main shaft 30.

For example, when the driver shifts the shift lever to four speeds, the 4 / 5-speed synchronous device 37 between the main drive gear 11 and the main shaft four-speed gear 31 moves to the four-speed gear 31 and the main shaft 30 ) And the four-gear gear 31 are integrally combined, and the rotational power of the engine is transmitted from the transmission input shaft 10 to the sub-axis drive gear 15 to the fourth shaft gear 22 to the main shaft four-speed gear 31. The main shaft 30 is transmitted in the order of the propulsion shaft 4.

In addition, the gear 41 is engaged with the first gear and the reversing gear 25 on the subshaft 20 and the gear 42 with the reverse gear 35 on the main shaft 30 for the reverse driving of the vehicle. The reverse idler gear 40 is included, and when the driver reverses the shift lever, the corresponding first gear / reverse synchronizer 39 connects the reverse gear 35 and the main shaft 30 to the secondary shaft ( The rotation of 20 is reversed by the reverse idler gear 40 to reverse drive the reverse gear 35 of the main shaft 30.

In the drawings, reference numerals 13 to 17 denote "bearings".

In the manual transmission, the conventional power take-off device 50 is mounted on the transmission case 3a of the portion where the reverse idler gear 40 is located so that the gear 61 on the drive shaft 60 is connected to the reverse idler gear 40. The drive shaft 60 is driven by the drive shaft 60, and the drive shaft 60 is connected to the output shaft 62 by sliding the sleeve 52 so that the output shaft 62 is driven.

The detailed configuration of the power take-off device 50 is, as shown in Figure 2, the drive shaft 60 having the gear 61 is always engaged with the reverse idle gear 40 is supported by a bearing 53 on the housing 51, In addition, the output shaft 62 is connected to the drive shaft 60 and the bearing 54 via a drive of the sleeve 52 in accordance with the sliding of the sleeve 52. (56) and (57). The sleeve 52 is slid by the shift fork 64 of the shift rod 63 slidingly installed in the housing 51, and one end of the shift rod 63 has a cylinder 65 provided on the side of the housing 51. Piston 66 is fixed in a state that the spring 67 is supported, and when compressed air is supplied to the cylinder 65, the piston 66 moves axially to connect the sleeve 52 to the drive shaft 60 and to provide compressed air. Upon removal, the sleeve 52 is released by the spring 67 to release the sleeve 52 from the drive shaft 60. One side of the cylinder 65 is provided with a screw connection 68 for connecting the air supply line of the compressed air supply source.

As described above, the conventional power take-off is driven by the reverse idler gear 40, and the sleeve 52 is inevitably disposed between the gear 41 and the gear 42 of the reverse idler gear 40. As a result, the length of the output shaft 62 protrudes from the bearing 56 support point of the housing 51 to the gear 61 side of the drive shaft 60 very much, and the length of the drive shaft 60 and the output shaft 62 is In order to bring the bearing 54 support point into the bearing 56 support point of the output shaft 62, the length of the drive shaft 60 must also be extended.

In the conventional structure, the vibration becomes very severe toward the tip of the output shaft 62, that is, the portion where the sleeve 52 is installed, thereby causing severe vibration of the drive shaft 60, thereby causing damage to the values of the gears 41 and 61. The noise is severe and the bending stress is greatly generated. In addition, problems such as shortening of the lifespan of the support bearings 53, 54, 56 and 57 are caused by these causes.

On the other hand, in the conventional power take-off, it is difficult for the driver to control the auxiliary machine driven by the power take-off because the driver is not provided with a detection device for checking the rotation speed of the output shaft 62, and furthermore, the air supply line of the compressed air supply source Since there is only one connection port 68 to be connected, it can be connected in only one direction, and thus there is a problem in that it is not appropriately responded to in accordance with the working situation.

The present invention is devised to solve the above problems of the prior art, it is possible to increase the bending rigidity and bearing stiffness of the drive shaft and output shaft by providing a power take-off structure that can reduce the length of the drive shaft and the output shaft, the rotation of the output shaft It is an object of the present invention to provide a power take-off of a manual transmission that is easily connected to the water control and compressed air lines.

In order to achieve the above object, the present invention is mounted on one side of the transmission case of the manual transmission having a main shaft and a sub shaft as its housing, and is connected to the sub shaft of the manual transmission to drive other machinery besides driving the vehicle with the driving force of the sub shaft. A power take-off device of a manual transmission for power connection or release by sliding of a sleeve by a pneumatic cylinder, a piston and a spring in the housing, comprising: a four-stage gear that integrally rotates with a sub-axis of the manual transmission; A four-stage idle gear, which is engaged with the four-stage gear of the sub-shaft and idlely installed with a fixed shaft and a bearing inside the transmission case; A drive shaft integrally provided with the gear engaged with the four-stage idle gear and having a front end supported by a bearing in the housing; An output shaft supported by a bearing at the rear end of the drive shaft and supported by each bearing in the housing and a cover provided at the rear end of the housing. Characterized in that the order of the idle gear → drive shaft → output shaft.

In addition, the speedometer is integrally provided on the output shaft, and the speedometer is orthogonally meshed with the speedometer drive gear is rotatably installed on the cover and the connector for connecting the cable from the outside at one end thereof is provided. It is characterized by including a driven gear.

In addition, at one outer periphery of the cylinder for sliding of the sleeve is characterized in that the connecting port for connecting the compressed air supply line to the cylinder is screwed into three at predetermined intervals.

1 is a schematic diagram showing a power take-off structure of a conventional manual transmission

2 is a cross-sectional view of a conventional power take-off device

3 is a cross-sectional view of the power take-off device according to the present invention

4 is a cross-sectional view taken along the line A-A of FIG.

FIG. 5 is a view from the direction “B” of FIG. 3;

<Description of the symbols for the main parts of the drawings>

3: manual transmission 3a: transmission case 20: minor shaft

22: four-stage gear 30: spindle 52: sleeve

65 cylinder 67 spring 68 connection port

70: drive shaft 71: gear 72: output shaft

73: Speedometer Drive Gear 74: Speedometer Drive Gear

75 connector 80 housing 81 82 82 84 bearing

83: Cover 100: 4-axis idle gear 101: Fixed shaft

102: Bearing

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 is a cross-sectional view of a power take-off apparatus according to the present invention, FIG. 4 is a cross-sectional view taken along the line A-A of FIG. 3, and FIG. 5 is a view seen from the direction "B" of FIG.

The same parts as in the related art are denoted by the same reference numerals, and repeated description thereof is omitted.

In particular, the power take-off device of the present invention is characterized by having a configuration driven by the reverse idler gear 40 so as to be driven by the sub-axis four-gear gear 22 of the manual transmission 3, As shown in the figure, the sub-axis four-gear gear 22 and the sub-axis four-gear gear 22 which are provided to rotate integrally with the sub-shaft 20 of the manual transmission 3 are engaged with each other of the transmission case 3a. A four-stage idle gear 100, which is idlingly installed by the fixed shaft 101 and the bearing 102, and a gear 71 meshed with the four-stage idle gear 100 are integrally provided therein. The drive shaft 70 supported by the bearing 81 on the 80 and the bearing 82 on the rear end of the drive shaft 70, and the housing 80 and the cover provided on the rear end of the housing 80. 83, an output shaft 72 supported by each of the bearings 84 and 85 is configured. Accordingly, the power take-off flow is performed in the order of the sub-shaft 20 → sub-shaft four-stage gear 22 → sub-shaft four-stage idle gear 100 → drive shaft 70 → output shaft 72 of the manual transmission 3. .

The configuration of the present invention is conventionally the arrangement position of the sleeve 52 is limited between the gear 41 and the gear 42 of the reverse idler gear 40, the drive shaft and the output shaft length should be long, unlike the sleeve ( 52) There is no restriction on the installation to provide a structure that can shorten the length of the drive shaft 70 and the output shaft 72. That is, the length from the support bearing 84 of the output shaft 72 to the front end thereof and the length of the drive shaft 70 can be reduced, thereby reducing the bending vibration as well as the rotational vibration of the output shaft 72 and the drive shaft 70. Will be. Furthermore, since the capacity of each of the bearings 81, 82, 84, and 85 can be obtained relatively large, the life of the bearings 81, 82, 84, and 85 can be extended, and the effects thereof. The capacity of the furnace power take-off can also be increased. In this case, when the bearing 85 disposed on the cover 83 of the output shaft 72 is adopted as a cylindrical roller bearing in the conventional ball bearing, the bearing capacity can be further increased.

3 and 4, the power take-off device is provided with a speedometer drive gear 73 integrally on the output shaft 72 between the bearing 84 and the bearing 85. The speedometer driven gear 74 is orthogonal to the speedometer drive gear 73 and is rotatably installed on the cover 83, and a connector 75 for connecting a cable from the outside is provided at one end thereof. Has a complete configuration.

The speedometer drive gear 73 and the speedometer driven gear 74 are gears of a type employed in a general speed detection mechanism commonly found in a manual transmission, and the speedometer drive gear 73 is spirally wound on an outer circumference. A gear tooth is formed and the speedometer driven gear 74 has a gear tooth having a predetermined twist angle corresponding to the helical gear tooth.

The connector 75 of the speedometer driven gear 74 is connected to a cable for connection to a speedometer that can be understood by the driver, thereby allowing the driver to properly grasp the rotational speed of the output shaft 72 from the speedometer while properly adjusting the accelerator pedal. It is adjustable, which is very advantageous for speed control of the output shaft.

3 and 5, the power take-off device includes three connection ports 68 for connecting the compressed air supply line to one outer circumference of the cylinder 65 for sliding operation of the sleeve 52. It has a structure installed. Arrangement intervals of the connectors 68 can be arbitrarily selected, and in the illustrated example, three connectors 68 are arranged at equal intervals (same angle).

Thus, when using compressed air supply source, that is, when compressed air is supplied from a compressor provided in the vehicle, the air supply line may be connected to the connection port 68 at the lower right in FIG. 5, and may be supplied from a separate compressor. In this case, it is to provide the convenience of using the lower left.

As described above, according to the power take-off structure of the manual transmission according to the present invention, the drive shaft and the output shaft of the power take-off can be reduced by providing a structure in which the drive of the power take-off is performed by the four-axis sub-gear of the manual transmission. As a result, the bending and bearing stiffness of the drive shaft and the output shaft can be increased, and the speed control of the output shaft and the connection of the compressed air line can be easily performed by the speedometer gear and three connection ports which are installed in the power take-off unit. It can be carried out.

Claims (3)

The housing 80 is mounted on one side of the transmission case 3a of the manual transmission 3 having the main shaft 30 and the subshaft 20 as its housing 80 to be electrically connected to the subshaft 20 of the manual transmission 3. The driving force of 20 is to drive other machinery in addition to vehicle driving, and is driven by sliding of the pneumatic cylinder 65 and the sleeve 52 by the piston 66 and the spring 67 in the housing 80. In the power take-off of the manual transmission to be connected or disconnected, A sub-axis four-speed gear 22 which is integrally rotated with the sub-axis 20 of the manual transmission 3; A four-stage idle gear 100 which is engaged with the four-stage gear 22 and idlely installed as a fixed shaft 101 and a bearing 102 inside the transmission case 3a; A drive shaft (70) integrally provided with the gear (71) meshed with the four-axis idle gear (100) and having a front end supported by a bearing (81) in the housing (80); An output shaft 72 supported by bearings 82 at the rear end of the drive shaft 70 and supported by the bearings 84 and 85 at the housing 80 and the cover 83 provided at the rear end of the housing 80. It is configured to include, so that the flow of power is made in the order of the manual transmission sub-shaft 20 → sub-axis four-stage gear 22 → sub-axis four-stage idle gear 100 → drive shaft 70 → output shaft 72. Power take-off device of a manual transmission, characterized in that. The method of claim 1, A speedometer drive gear 73 integrally provided on the output shaft 72 between the bearing 84 and the bearing 85, The speedometer drive gear 73 includes a speedometer driven gear 74 that is orthogonal to the speedometer drive gear 73 and is rotatably installed on the cover 83 and has a connector 75 for connecting a cable from the outside at one end thereof. Power take-off device of a manual transmission, characterized in that. The method of claim 1, On one outer circumference of the cylinder 65 for sliding of the sleeve 52, a connection port 68 for connecting the compressed air supply line to the cylinder 65 is screwed into three at predetermined intervals. Power take-off of manual transmission.