KR100902719B1 - Transmission swichable between forward 6 steps and 7 steps - Google Patents

Abstract

The present invention relates to a front-wheel drive forward 6, 7-speed manual transmission, which can be manufactured in one transmission production line even if any gear stage is selected from 6-speed or 7-speed. The first to sixth stage drive gears are arranged on the input shaft, the 3, 4, 7, R stage driven gears are provided on the upper output shaft, and the 1, 2, 5, 6 stage driven gears are provided on the lower output shaft. At this time, the 7-speed driven gear is meshed with the 5-speed drive gear as an option.

Transmission, Vehicle, Engine, Transmission, Differential, Synchronized Mechanism

Description

Front-wheel drive forward 6 and 7-speed manual transmissions {Transmission swichable between forward 6 steps and 7 steps}

The present invention relates to a manual transmission for transmitting the power of the engine to the driving wheel by changing the rotational force and speed to suit the driving state of the vehicle, in particular, 6 and 7 gears in one production line as a structure of two output shafts on one input shaft The present invention relates to a front-wheel drive forward 6 and 7-speed manual transmission.

In a typical vehicle, the transmission has five gears. Such a five-speed transmission is generally inconvenient to drive, but is not sufficient for driver enthusiasts to satisfy their needs.

In general, the two-axis six-speed manual transmission has an excessively long length of the entire transmission, so the engine room is narrow in the all-wheel drive type due to the rapid reversal of the vehicle, which is difficult to design various equipment and accessories. have. That is, there is a problem that the transmission is too long, the rigidity is lowered and the vibration of the shaft is increased.

Therefore, conventionally, a three-axis five-speed manual transmission using two output shafts for one input shaft has been developed. One of the two output shafts is used as the intermediate shaft. It installs five drive gears with different diameters on the input shaft and uses the synchronized gears (synchromesh) installed on the input shaft, the intermediate shaft and the output shaft. By choice. However, this does not give six forward speeds, so the choice of shifting is narrow.

Moreover, the current trend is to increase the number of gears, which requires additional lines to form the seventh forward. In other words, in order to obtain a shift from the sixth gear to the seventh gear, a production line separate from the sixth gear was required.

Therefore, the present invention is to solve the problems of the prior art as described above, by selecting any of the gear stages of 6 or 7 gears can be manufactured in one production line front wheel to significantly reduce the production cost Its purpose is to provide a drive-type forward 6 and 7-speed manual transmission.

Specific means of the present invention for achieving the above object,

In the manual transmission which shifts the rotational force of the engine to the required speed and transmits it to the ring gear 22 of the differential gear device 20,

An input shaft 32, an upper output shaft 34, and a lower output shaft 36, which receive the rotational force of the engine, are arranged side by side in the transmission housing 30;

First stage drive gear 41, second stage drive gear 42, fifth stage drive gear 45, three stage drive gear 43, four stage drive gear 44 and 6 from the front end to the rear end on the input shaft 32. However, the driving gears 46 are fixed to each other sequentially;

The lower output shaft 36 includes a first stage driven gear 51 meshed with the first stage drive gear 41, a second stage driven gear 52 meshed with the second stage drive gear 42, and a fifth stage drive. The five-stage driven gear 55 meshed with the gear 45 and the six-stage driven gear 56 meshed with the six-stage drive gear 46 are rotatably installed, and the first-stage driven gear 51 Between the two-stage driven gear 52 and the five-stage driven gear 55 and the sixth-stage driven gear 56, the 1-2-stage synchromesh mechanism 100 and the 5-6-stage around the upper output shaft 34, respectively. Synchro Mechanism 120 is installed,

The upper output shaft 34 has a reversing gear 61 meshed with the first stage driven gear 43, a three stage driven gear 53 meshed with the third stage drive gear 43, and a four stage drive gear ( The four-stage driven gear 54 meshed with 44 is rotatably installed, and the upper output shaft (3) between the three-stage driven gear 53 and the four-stage driven gear 54 and on one side of the reverse gear 61 34) 3-4 stage synchronized mesh mechanism 110 and 7-R stage synchronized mesh mechanism 130 are installed around the periphery;

The ring gear 22 is simultaneously engaged with the upper reduction gear 35 and the lower reduction gear 37 respectively provided at the distal ends of the upper output shaft 34 and the lower output shaft 36.

In addition, according to the present invention, the seven-stage driven gear 57 meshed with the five-stage drive gear 42 is rotatably installed on the upper output shaft 34, and the seven-stage driven gear 57 is a 7-R stage synchro. It is characterized by transmitting the rotational force to the upper output shaft 34 by the seven-step operation of the mesh mechanism 130.

As described above, according to the front-wheel drive type forward 6 and 7-speed manual transmission according to the present invention, there is one input shaft and two output shaft structures in the transmission housing. The seven gears are stitched on the same gear, making it possible to produce transmissions on one line. In addition, at the maximum speed of 7 times, the speed of the driver's convenience is increased and fuel economy is improved.

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

1 is a conceptual diagram illustrating a seventh gear is deleted as a conceptual configuration diagram of a front-wheel drive type forward 6 · 7 speed selective manual transmission according to the present invention, and FIG. 2 is an exemplary view in which a seventh gear is added to FIG. 1, and FIG. 3 is a side view of FIG. 1, which illustrates a gear coupling state of an input shaft, two output shafts, and a ring gear, and FIG. 4 is an enlarged view of a synchromesh mechanism applied to the present invention.

The present invention is a manual transmission for transmitting the rotational force of the engine at a required speed as shown in Figures 1 and 2 to the ring gear 22 of the differential gear device 20, the rotational force of the engine in the transmission housing (30) The input shaft 32, the upper output shaft 34 and the lower output shaft 36 are arranged side by side with each other. In this embodiment, the input shaft 32, the upper output shaft 34, and the lower output shaft 36 are arranged in triangular positions.

The input shaft 32 has a first stage drive gear 41, a second stage gear 42, a fifth stage gear 45, a third stage gear 43, and a fourth stage drive gear from the front end to the rear stage. 44 and 6-stage drive gears 46 are fixedly installed in sequence. At this time, the gears 41, 42, 45, 44, 46 are increased in diameter as the number of stages increases, so that a high rotational speed can be obtained.

The lower output shaft 36 includes a first stage driven gear 51 meshed with the first stage drive gear 41, a second stage driven gear 52 meshed with the second stage drive gear 42, and five stages. Five-stage driven gears 55 meshed with the drive gears 45 and six-stage driven gears 56 meshed with the six-stage drive gears 46 are rotatably provided. That is, the 1st, 2nd, 5th, and 6th stage driven gears 51, 52, 55, and 56 are freely rotated on the lower output shaft 36.

In addition, the lower output shaft 36 has a first-stage driven gear 51, a second-stage driven gear 52, and a 5-stage driven gear 55 and a sixth-stage driven gear 56, respectively, in a 1-2-stage synchronized mesh mechanism ( 100 and the 5-6 stage synchro mesh mechanism 110 are provided.

The 1-2 stage synchro mesh mechanism 100 includes a clutch hub gear 101 fixed to the lower output shaft 36 and a clutch sleeve 102 slidably positioned in the circumferential direction of the hub gear 101. Interposed between the clutch hub gear 101 and the clutch sleeve 102 so that the clutch hub gear 101 may be driven between the first and second driven gears 51 or 52 according to the sliding position of the clutch sleeve 102. And a synchronizer ring 103 connected to it.

The 1-2-stage synchromesh mechanism 100 selectively secures any one selected from the first-stage driven gear 51 or the second-stage driven gear 52 to the lower output shaft 36 in accordance with the operation direction of the shift rod (not shown). It plays a role.

And the upper output shaft 34, the three-stage driven gear 53, the four-stage driven gear 54 and the reverse gear 61 is rotatably inserted as shown in Figure 1, or the five-stage drive gear 45 as shown in FIG. It may further include a seven-stage driven gear (57) meshed with. The three-stage driven gear 53 is engaged with the three-stage drive gear 43, the four-stage driven gear 54 is engaged with the four-stage drive gear 44, and the seventh-stage driven gear 57 is The five-stage drive gear 45 is engaged, and the reverse gear 61 is engaged with the first-stage driven gear 51 as shown in FIG.

3-4 stage synchronized mesh mechanism around the upper output shaft 34 between the 3rd driven gear 53 and the 4th driven gear 54 and between the 7th driven gear 57 and the rear gear 61. 110) and 7-R stage synchromesh mechanism 130 are respectively provided.

These synchromesh mechanisms 120 and 130 have the same structure as the synchromesh mechanism 100 and only the selected gears are different, and thus detailed description thereof will be omitted.

Meanwhile, as shown in FIG. 3, the ring gear 22 is engaged with the upper reduction gear 35 and the lower reduction gear 37 respectively provided at the distal ends of the upper output shaft 34 and the lower output shaft 36. The upper reduction gear 35 and the lower reduction gear 37 are fixed to the upper output shaft 34 and the lower output shaft 36, respectively.

Therefore, the upper reduction gear 35 and the lower reduction gear 37 rotate in the same direction with each other by the engagement of the ring gear 22.

The reason why the ring gear 22 is engaged with the upper reduction gear 35 and the lower reduction gear 37 is that the gear reduction ratios of the 3rd forward, 4th forward, 7th forward and backward of the upper output shaft 32 are as follows. In order to obtain a gear reduction ratio of 1st forward, 2nd forward, 5th forward, and 6th forward on the lower output shaft 36.

Thus, in the present invention, the input shaft 32, the upper output shaft 34 and the lower output shaft 36 are arranged side by side at the vertex position of the triangle, and the second stage driven gear 42 on the second stage drive gear 42 of the input shaft 32; The length of the forward seven-speed transmission can be reduced as a whole by engaging the 52 and the three-speed driven gear 53 together.

Furthermore, in the present invention, since the seven-stage driven gear 57 is engaged with the five-stage drive gear 45 at the same time as the five-stage driven gear 55, the seventh-stage driven gear 57 is removed as shown in FIG. Only forward gears can be obtained.

In this way, the seven-speed gearbox can be installed as an optional feature, so the seven-speed transmission can be produced in the six-speed transmission production line.

Meanwhile, the differential gear device 20 is engaged with the pair of differential pinion gears 25 and the differential pinion gears 25 freely installed on the rotational axis of the ring gear 22 and axially coupled to the axle shaft 26. A pair of side bevel gears 27 is included.

The differential pinion gear 25 locks and rotates with the side bevel gear 27 when the rolling resistance applied to both driving wheels of the axle shaft 26 is the same, but the rolling resistance of one driving wheel is the other driving wheel. When the rolling resistance is larger than the rolling resistance of, the motor rotates about the central axis of the differential pinion gear 25 so that both driving wheels can rotate at different speeds.

The seventh forward control and one reverse speed control operation of the manual transmission configured as described above will be described.

Gear neutral

When the shift rod (not shown) is neutral (N) and the input shaft 32 is in the rotational driving state, the first, second, third, fourth, fifth and sixth stage drive gears 41, 42, 43, 44, 45, 46 Reverse gear geared to the first, second, and second gears 51, 52, 53, 54, 55, 56 rotated in the opposite direction and meshed with the first-stage driven gear 51 at the same time. 51 rotates in the same direction. At this time, the driven gears 51 to 56 and the reverse gear 61 are rotatably installed on both the upper output shaft 34 and the lower output shaft 36 to idle.

Therefore, the rotational force is not transmitted to the upper output shaft 34 and the lower output shaft 36 according to the rotation of the input shaft 32.

<1st gear forward selection>

In this state, if the first stage is selected by operating the shift rod not shown in the figure, the clutch sleeve 102 of the synchromesh mechanism 100 moves to the right in FIG. ) Is connected to rotate integrally, the lower output shaft 36 receives the rotational force of the first stage drive gear (41).

Therefore, the lower output shaft 36 rotates at the same rotational speed as the first stage driven gear 51, and at the same time, the ring gear 22 rotates through the lower longitudinal reduction gear 37. The rotation of the ring gear 22 causes the pair of differential pinion gears 25 to rotate about the axle shaft 26 and at the same time a pair of side bevel gears 27 meshed with the differential pinion gears 25. Rotate Accordingly, the axle shaft 26 condensed in the side bevel gear 27 rotates at the first gear ratio to advance the vehicle at the lowest speed.

<When selecting the second gear forward>

As the shift of the second gear is positioned in the second gear, the clutch sleeve 102 of the 1-2 gear synchro mechanism 100 moves to the left in FIG. The clutch hub gear 101 is connected to rotate integrally, so that the lower output shaft 36 receives the rotational force of the two-stage drive gear 42.

Accordingly, the lower output shaft 36 rotates at the same rotational speed as the second stage driven gear 52, and at the same time, the ring gear 22 rotates through the lower longitudinal reduction gear 37. As the ring gear 22 rotates, the axle shaft 26 rotates at the second gear ratio, and the vehicle is advanced.

<When selecting the 3rd gear forward>

The shift of the third gear is performed by selecting the shift rod in the third gear position.

As a result, the clutch sleeve of the 3-4 stage synchronized mesh mechanism 110 is moved to the right side in FIG. 1 so that the 3rd driven gear 53 and the clutch hub gear rotate together, and the 3rd driven gear 53 is Since the upper gear shaft 34 is engaged with the three-stage drive gear 43, the upper output shaft 34 receives the rotational force of the three-stage drive gear 43.

Accordingly, the upper output shaft 34 rotates at the same rotational speed as the three-stage driven gear 53, and at the same time, the ring gear 22 rotates through the upper longitudinal reduction gear 35. The axle shaft 26 rotates in three gear ratios by the rotation of the ring gear 22, and the vehicle is advanced.

<4th gear forward selection>

The shift of the fourth gear is performed by rotating the shift rod in the fourth gear.

As a result, the clutch sleeve of the 3-4 stage synchronized mesh mechanism 110 moves to the left side in FIG. 1 this time so that the 4th driven gear 54 and the clutch hub gear are integrally rotated, and the 4th driven gear 54 ) Is engaged with the four-stage drive gear 44, so the upper output shaft 34 receives the rotational force of the four-stage drive gear 44.

Therefore, the upper output shaft 34 rotates at the same rotational speed as the four-stage driven gear 54, and at the same time, the ring gear 22 rotates through the upper longitudinal reduction gear 35. As the ring gear 22 rotates, the axle shaft 26 of the differential gear device 20 rotates at the fourth gear ratio, and the vehicle is advanced.

<5th gear forward selection>

The shifting of the fifth gear is made by shifting the shift rod to the fifth gear. As a result, the clutch sleeve of the 5-6 stage synchronized mesh mechanism 120 is moved to the right side in FIG. 1 so that the 5 stage driven gear 55 and the clutch hub gear rotate together, and the 5 stage driven gear 55 Since the lower gear shaft 36 is engaged with the five-stage driving gear 45, the lower output shaft 36 receives the rotational force of the five-stage driving gear 45.

Accordingly, the lower output shaft 36 rotates at the same rotational speed as the five-speed driven gear 55, and at the same time, the ring gear 22 rotates through the lower longitudinal reduction gear 37. As the ring gear 22 rotates, the axle shaft 26 of the differential gear device rotates at the fifth gear ratio, and the vehicle is advanced.

<When 6th gear forward is selected>

The shift of the sixth gear is performed by rotating the shift rod in the sixth direction. As a result, the clutch sleeve of the 5-6 stage synchronized mesh mechanism 120 is moved to the left side in FIG. 1 this time so that the 6 stage driven gear 56 and the clutch hub gear are integrally rotated, and the 6 stage driven gear 56 ) Is engaged with the six-stage drive gear 46, so that the lower output shaft 36 receives the rotational force of the six-stage drive gear 46.

Accordingly, the lower output shaft 36 rotates at the same rotational speed as the six-stage driven gear 56, and at the same time, the ring gear 22 rotates through the lower longitudinal reduction gear 37. As the ring gear 22 rotates, the axle shaft 26 of the differential gear device 20 rotates at a six-speed gear ratio, and the vehicle is advanced.

<7th gear forward selection>

The shift of the seventh gear is performed by positioning the shift rod in seven gears. As a result, in FIG. 2, the clutch sleeve of the 7-R stage synchromesh mechanism 130 moves to the left side in FIG. 2 so that the seventh-speed driven gear 57 and the clutch hub gear rotate integrally. 57 is engaged with the five-stage drive gear 45, so the lower output shaft 36 receives the rotational force of the five-stage drive gear 45.

Accordingly, the lower output shaft 36 rotates at the same rotational speed as the seventh stage driven gear 57, and at the same time, the ring gear 22 rotates through the upper longitudinal reduction gear 35. Rotation of the ring gear 22 causes the axle shaft 26 of the differential gear device 20 to rotate at a seven-speed gear ratio so that the vehicle is advanced at full speed.

<Reverse gear>

In shifting to the reverse gear, when the shift rod is positioned at the reverse R stage, the clutch sleeve of the 7-R stage synchromesh mechanism 130 moves to the right in FIG. 1 so that the reverse gear 61 and the clutch hub gear rotate integrally. To be connected.

The rotational force of the input shaft 32 is transmitted to the upper output shaft 34 through the first stage drive gear 41, the first stage driven gear 51 and the reverse gear 61, and the rotational force of the upper output shaft 34 is the upper reduction gear. It is transmitted to the ring gear 22 of the differential gear device 20 through the (35).

Accordingly, in the shift of the reverse gear, the ring gear 22 and the axle shaft 26 rotate in the opposite direction to the rotation direction of the input shaft 32, and the vehicle is reversed backward.

Thus, in the present invention, one input shaft 32 and two upper and lower output shafts 34 and 36 are arranged side by side at triangular vertex positions, and seven driven gears 51 to 57 are formed on these output shafts 34 and 36. ) And the reversing gear 61 are arranged in a distributed manner, but the 5-speed drive gear 45 is composed of 5-speed and 7-speed driven gears 55 and 57 together, so that the length of the transmission can be reduced by one step width. .

In addition, the seven-stage driven gear 57 installed on the upper output shaft 34 can be deleted in the shifting process of one line in the case of six stages, and can be additionally installed in the case of selecting the seventh stage. Therefore, six and seven gears can be manufactured in one transmission production line.

In addition, six-speed or seven-speed forwards are available, allowing efficient driving, reducing fuel costs and increasing driver choice.

As described above, although the present invention has been described by way of limited embodiments and drawings, the present invention is not limited thereto, and the technical idea of the present invention and the following by those skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the scope of equivalents of the claims to be described.

The following drawings, which are attached in this specification, illustrate preferred embodiments of the present invention, and together with the detailed description of the present invention, serve to further understand the technical spirit of the present invention. It should not be construed as limited to.

1 is a conceptual diagram of a front wheel drive forward 6, 7-speed selective manual transmission in accordance with the present invention is an illustration of the seventh gear is deleted.

Figure 2 is an exemplary view in which the seventh gear is added in FIG.

Figure 3 is a side view of Figure 1, showing the gear coupling state of the input shaft, two output shaft and the ring gear.

Figure 4 is an enlarged view of the synchroche mechanism applied to the present invention.

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

32: input shaft

34: upper output shaft

36: lower output shaft

41: 1st drive gear

42: two-stage drive gear

43: three-speed drive gear

44: four-speed drive gear

45: 5-speed drive gear

46: 6-speed drive gear

51: single stage driven gear

52: two-speed driven gear

53: 3-Step Drive Gear

54; 4-speed driven gear

55: 5-speed driven gear

56: 6-speed Drive Gear

57: 7-speed Drive Gear

100: 1-2 steps synchronized mesh

110: 3-4 stage synchronized mesh mechanism

120: 5-6 stage synchronized mesh mechanism

130: 7-R stage synchronized mesh mechanism

Claims (2)

In the manual transmission which shifts the rotational force of the engine to the required speed and transmits it to the ring gear 22 of the differential gear device 20, An input shaft 32, an upper output shaft 34, and a lower output shaft 36, which receive the rotational force of the engine, are arranged side by side in the transmission housing 30; First stage drive gear 41, second stage drive gear 42, fifth stage drive gear 45, three stage drive gear 43, four stage drive gear 44 and 6 from the front end to the rear end on the input shaft 32. However, the driving gears 46 are fixed to each other sequentially; The lower output shaft 36 has a first stage driven gear 51 meshed with the first stage drive gear 41, a second stage driven gear 52 meshed with the second stage drive gear 42, and five stages. The 5-stage driven gear 55 meshed with the drive gear 45 and the 6-stage driven gear 56 meshed with the 6-stage drive gear 46 are rotatably installed and the single-stage driven gear 51 And 2-stage synchronized gear mechanism (100) and 5--6 stages respectively around the upper output shaft (34) between the two-stage driven gear (52) and the five-stage driven gear (55) and the sixth-stage driven gear (56). Synchro Mechanism 120 is installed, The upper output shaft 34 has a reversing gear 61 meshed with the first stage driven gear 51, a three stage driven gear 53 meshed with the third stage drive gear 43, and a four stage drive gear. The four-stage driven gear 54 meshed with (44) is rotatably installed, respectively, and the upper output shaft between the three-stage driven gear 53 and the four-stage driven gear 54 and on one side of the reverse gear 61. (34) a 3-4 stage synchronized mesh mechanism 110 and a 7-R stage synchronized mesh mechanism 130 are installed around the periphery; The ring gear 22 is a front wheel, characterized in that the mesh is engaged with the upper gear reduction gear 35 and the lower gear reduction gear 37 respectively installed at the front end of the upper output shaft 34 and the lower output shaft 36, respectively. Driven forward 6 and 7-speed manual transmissions. The method of claim 1, The seven-speed driven gear 57 meshed with the five-stage drive gear 45 is rotatably installed on the upper output shaft 34, and the seven-stage driven gear 57 is a 7-R stage synchronized mesh mechanism 130. The front wheel drive forward 6, 7-speed manual transmission, characterized in that for transmitting the rotational force to the upper output shaft (34) by the seven-step operation of.

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