KR100597351B1 - FR type manual transmission - Google Patents

Abstract

The manual transmission for rear wheel drive according to the present invention, an input shaft having a main drive gear, a main shaft for rotating the longitudinal reduction device while being rotated by receiving the power of the input shaft, and arranged in parallel with the main shaft In a manual transmission for rear wheel drive comprising a counter shaft for transmitting the power transmitted from the main drive gear to the driven gear of each stage disposed on the main shaft, the first transmission is idlely mounted on the counter shaft Gears; A lever-type synchronizer directly connected to the counter shaft to synchronize the rotational speeds of the first transmission gear and the counter shaft; A second shifting gear installed directly on the counter shaft at a side of the lever-type synchronizer; A first driven gear directly connected to the main shaft and engaged with the first transmission gear; A second driven gear mounted idlely on the main shaft and engaged with the second transmission gear; It is configured to include a sleeve coupled to the first driven gear side to transmit the rotational power when a specific gear shift in the state coupled to the second driven gear side, thereby reducing the amount of rotational inertia as a whole of the transmission, It can be improved, and the small size synchronizer can cope with the large capacity, thereby reducing the cost.

Lever Synchronizer, Counter Shaft, Main Shaft, 5 Stages, Reverse

Description

Manual transmission for rear wheel drive {FR type manual transmission}             

1 is a block diagram showing a conventional manual transmission for rear wheel drive,

2 is a configuration diagram showing a manual transmission for driving the rear wheels according to the present invention,

3 is a detailed view of the main part of the present invention;

Figure 4 is a detailed view of the lever-type synchronizer used in the present invention.

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

51: input shaft 52: main drive gear

61: counter shaft 62: direct gear

63, 64, 65; Gear shift 66: 5-speed gear

66a: clutch gear 66b: needle roller bearing

67: reverse gear shifting gear 71: main shaft

73, 74, 75: driven gear 76: 5-stage / reverse driven gear

77: reverse transmission gear 77b: needle roller bearing

81, 82: synchronizer 85: reverse sleeve

88: reverse idler gear 89: reverse idler axis

90 lever lever synchronizer 91 lever sleeve

92: lever 93: hub

94: ring assembly

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rear wheel drive manual transmission, and more particularly, to a rear wheel drive manual transmission that can improve shift operation feeling and reduce costs by using a lever type synchronizer.

1 is a longitudinal sectional view of a conventional rear wheel drive manual transmission, in which a conventional rear wheel drive manual transmission includes an input shaft 11 provided with a main drive gear 10 and rotating by receiving engine power from a clutch, The main shaft 12 for rotating the longitudinal reduction device while being rotated by receiving the power of the shaft 11, and the main shaft 11 is arranged side by side with a constant distance, that is, the distance between the shaft from the main drive gear 10 The counter shaft 13 is provided to transmit the transmitted power to the driven gear 16 at each end disposed on the main shaft 12.

The rear wheel drive type manual transmission is different from the arrangement structure of the front wheel drive type manual transmission and the power transmission path, and thus, the inertia amount is reduced by reducing the number of driven gears 16 rotating in the neutral state on the counter shaft 13. It is impossible to arrange the synchronizer system which can be made to be made. Therefore, each forward driving gear 15 and the reverse gear 14 are fixedly arranged on the counter shaft 13 because of this structural difficulty. .

That is, when the counter shaft 13 rotates, the gears 14 and 15 of the front end rotate, and the rotation and torque are transmitted to the relative driven gear 16 disposed on the main shaft 12. And all the transmission mechanisms of the six synchronizers 17 required for each stage shift are arrange | positioned on the main shaft 12, and are comprised.

In the conventional rear wheel drive manual transmission as described above, since the counter shaft 13 is integrally formed with the gears 14 and 15 of all stages, the rotation speed and the torque transmitted from the engine, the clutch, and the main drive gear 10. Received in the same concept as one shaft, to be transmitted to the driven gear 16 located on the opposite main shaft 12, the rotational power is decelerated and accelerated in accordance with the set gear ratio of each end through the main shaft 12 To the propulsion shaft.

However, in the conventional rear wheel drive manual transmission as described above, since the gears 14 and 15 of all stages are integrally rotated with the counter shaft 13, the rotational inertia is large and the repulsion, which is the main factor in gear shifting, is increased. As the inertia becomes large, as the full-speed gears 14, 15 and 16, which are mounted on the main shaft 12 and the counter shaft 13, rotate together, they are disadvantageous in terms of the RATTLE side, and also the shear angle The synchronizer mechanisms 17 required for shifting one by one are required, which is disadvantageous in terms of weight and cost.

On the other hand, unlike the conventional rear-wheel-driven manual transmission described above, the five-speed gear unit is disposed on the counter shaft to achieve a reduction in rotational inertia, and the reverse side has a structure in which a selective sliding type shifting system is applied. Although it has the advantage of shortening the overall length, the operation force is heavy during the reverse shift, and there are disadvantages such as a feeling of jamming and the occurrence of joints during rapid operation, there is a problem that an additional reverse shift mechanism such as a reverse cone brake is required to improve this.

The present invention has been made to solve the above problems, and provided with a lever synchronizer on the counter shaft to configure the reverse synchronizer and the 5-stage synchronizer in common, thereby reducing the amount of rotational inertia in the entire transmission to reduce the operational feeling. It is an object of the present invention to provide a manual transmission for rear-wheel drive that can reduce the manufacturing cost by improving the size, and the small size synchronizer can cope with large capacity.

The rear wheel drive manual transmission according to the present invention for realizing the above object includes an input shaft provided with a main drive gear, a main shaft for rotating the longitudinal reduction device while rotating by receiving power from the input shaft, and the main A rear wheel drive manual transmission comprising a counter shaft disposed in parallel with a shaft and transmitting power transmitted from the main drive gear to driven gears of respective stages disposed on the main shaft. A first shift gear mounted idlely; A lever-type synchronizer directly connected to the counter shaft to synchronize the rotational speeds of the first transmission gear and the counter shaft; A second shifting gear installed directly on the counter shaft at a side of the lever-type synchronizer; A first driven gear directly connected to the main shaft and engaged with the first transmission gear; A second driven gear mounted idlely on the main shaft and engaged with the second transmission gear; And a sleeve coupled to the first driven gear side to transmit rotational power during a specific gear shift in a state coupled to the second driven gear side.

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

Figure 2 is a block diagram showing a manual transmission for the rear wheel drive according to the invention, Figure 3 is a detailed view of the main part of the present invention, Figure 4 is a detailed view showing a lever-type synchronizer used in the present invention.

The manual transmission for rear wheel drive according to the present invention, as shown in Figure 2, the input shaft 51 is provided with a main drive gear 52, the longitudinal deceleration while being rotated by receiving the power of the input shaft 51 The main shaft 71 for rotating the device and the power transmitted from the main drive gear 52 in parallel with the main shaft 71 to the driven gears of the respective stages arranged on the main shaft 71. The counter shaft 61 is provided to transmit.

The counter shaft 61 and the main shaft 71 are engaged with a direct gear and three, two, and one-speed gears 62, 63, 64, 65 and these gears from the left side in FIG. Driven gears 73, 74, 75 are respectively provided, and the main shaft 71 has a double cone synchro between the main drive gear 52 and each driven gear 73, 74, 75. Nigers 81 and 82 are provided.

In particular, in the present invention, the rear side of the counter shaft 61 and the main shaft 71 is provided with a five-speed gear pair 66, 76 and a reverse gear pair 67, 77, 88, The structure is as follows.

A five-speed gear 66, which is a first shift gear mounted idlely on the counter shaft 61, is directly connected to the counter shaft 61, and the five-speed gear 66 and the counter shaft 61 are directly connected to the counter shaft 61; Lever-type synchronizer (90) of the double cone type function to synchronize the rotational speed of the) and the second transmission gear is installed directly on the counter shaft 61 in the side of the lever-type synchronizer (90) A five-speed / reverse driven gear 76 that is a first driven gear that is directly connected to the five-speed gear 66 by being connected to the reverse gear 59 and the main shaft 71; 71 and the reverse transmission gear 77 which is a second driven gear engaged with the reverse gear shifting gear 67 and idling on the reverse transmission gear 67, and when the reverse shift is performed in the state of being coupled to the reverse transmission gear 77 side. After being coupled to the end / reverse driven gear 76 side to transmit rotational power The sleeve 85 is configured.

Between the reverse gear shift 67 and the reverse transmission gear 77 is provided with a reverse idle gear 88 for reversing rotational power and a reverse idle shaft 89 mounted with the reverse idle gear 88.

The lever-type synchronizer 90 is radial in the hub 93 when the lever sleeve 91 is moved in both directions about the hub 93 coupled to the counter shaft 61, as shown in FIG. 4. By pushing the lever 92 is mounted to be configured to synchronize the rotational speed of the five-speed gear 66 and the counter shaft 61.

That is, in the lever-type synchronizer 90, when the lever sleeve 91 is moved in the axial direction when the gear shifting is performed in the 5th or the reverse stage, the lever 92 seated in the groove of the lever sleeve 91 is turned. The sleeve 91 is configured to achieve synchronization while pushing the double cone ring assembly 94 while moving together in the direction of movement. Thus, the double cone ring assembly 94 pushed in the direction of the clutch gear 66a is subjected to reverse load by the lever 92 which is constrained to the hub 93 but tries to rotate by frictional resistance with the clutch gear 66a. This is in synchronism with the axial load of the lever sleeve 91 to generate a frictional resistance on the cone surface of the clutch gear 66a.

3, the lever-type synchronizer 90 moves to the left side in the fifth gear shift direction 66 during the fifth gear shift, and the right side in the reverse gear shift direction 67 in the reverse shift gear shift. The lever sleeve 91 is engaged with the clutch gear 66a only when the gear is shifted to five speeds, and the lever sleeve 91 is not engaged with the clutch gear 66a when the gear shifts backward. Provide friction.

According to such a configuration of the lever-type synchronizer 90, the shift control mechanism applied to the present invention, when the reverse sleeve 85 is moved in the direction of the five-stage / reverse driven gear 76 for the reverse shift. The lever sleeve 91 of the lever-type synchronizer 90 is configured to be movable in the reverse shift gear 67 direction.

Meanwhile, a needle roller bearing 66b is provided between the counter shaft 61 and the five-speed gear 66 so as to allow relative idling, and a needle roller is also provided between the main shaft 71 and the reverse transmission gear 77. A bearing 77b is provided.

In addition, the 5-stage / reverse driven gear 76 is provided with a connecting gear 76a on which the reverse sleeve 85 is engaged, and the reverse transmission gear 77 has the reverse sleeve 85 on the side thereof. Is provided with a direct gear 77a is coupled.

In the rear wheel drive manual transmission according to the present invention configured as described above, a lever-type synchronizer 90 is disposed on the counter shaft 61, and the synchronizer mechanism for shifting the reverse gear is removed from the main shaft 71. Only the reverse sleeve 85 is arranged.

In particular, the lever-type synchronizer 90 performs a synchronizer function for five shifts when the lever sleeve 91 moves to the left in FIG. 3, and performs a synchronizer function for reverse shifting when the lever sleeve 91 moves to the left. Synchronous operation for the gearshift stage and the reverse shift can be performed simultaneously.

That is, when shifting to the fifth gear, the lever sleeve 91 of the lever-type synchronizer 90 operates in the same manner as a general synchronizer mechanism coupled to the clutch gear 66a. Unlike the moving direction of 90, the friction force between the double cone ring assembly 94 and the cone of the clutch gear 66a is used to stop the gear train in the transmission being rotated by rotational inertia, thereby enabling shifting of the reverse stage. Let

The rear wheel drive manual transmission according to the present invention constructed and acted as described above eliminates 5-speed and reverse-speed synchronizers on the main shaft, thereby reducing the amount of rotational inertia as a whole and improving shift operation feeling within the same length. In addition, it is possible to apply a mechanism called a lever-type synchronizer, so that it can be used in common with a 5-stage synchronizer without installing a reverse synchronizer, so that a small size synchronizer can cope with large capacity. This has the advantage of reducing costs.

Claims (9)

An input shaft provided with a main drive gear, a main shaft for rotating a longitudinal reduction device while being rotated by receiving power of the input shaft, and arranged in parallel with the main shaft to transmit power transmitted from the main drive gear to the main shaft. A rear wheel drive manual transmission comprising a counter shaft for transmitting to a driven gear of each stage disposed thereon, comprising: a first shift gear mounted idlely on the counter shaft; A lever-type synchronizer directly connected to the counter shaft to synchronize the rotational speeds of the first transmission gear and the counter shaft; A second shifting gear installed directly on the counter shaft at a side of the lever-type synchronizer; A first driven gear directly connected to the main shaft and engaged with the first transmission gear; A second driven gear mounted idlely on the main shaft and engaged with the second transmission gear; And a sleeve coupled to the first driven gear side to transmit rotational power during a specific gear shift in a state of being coupled to the second driven gear side. The method of claim 1, And said first shift gear is a five-speed gear. The method of claim 1, The second shift gear is a reverse gear, And a reverse idler gear for reversing rotational power between the second transmission gear and the second driven gear. The method according to any one of claims 1 to 3, The lever synchronizer is configured to synchronize the rotational speed of the first shift gear and the counter shaft by the action of a radially mounted lever on the hub when the lever sleeve is moved in both directions. Manual transmission for drive. The method of claim 4, wherein And the lever sleeve of the lever-type synchronizer is configured to move in the second shift gear direction when the sleeve is moved in the first driven gear direction. The method according to any one of claims 1 to 3, And a needle roller bearing is provided between the counter shaft and the first transmission gear. The method according to any one of claims 1 to 3, And a needle roller bearing is provided between the main shaft and the second driven gear. The method according to any one of claims 1 to 3, The first driven gear is a rear gear drive manual transmission, characterized in that the side gear is provided with a coupling gear to engage the sleeve. The method according to any one of claims 1 to 3, The second driven gear is a rear wheel drive manual transmission, characterized in that the direct gear is coupled to the sleeve is coupled to the side.

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