KR100192223B1 - Transmission for backward motion - Google Patents

Abstract

The present invention provides a reverse idler drive engaged with a first gear (4) of the main shaft (2) in order to provide a reverse transmission of a manual transmission for a vehicle to reduce the early wear of the gears and noise caused by friction between metals. Combining the gear 50 to be revolved in the reverse shaft 52 coupled to the transmission housing (T) and the clutch housing (C), the reverse children that can be combined with the reverse idle drive gear (50) can be rotated simultaneously A reverse gear coupling device capable of coupling the drive gear 54 to the reversing shaft 52 in a state capable of revolving and synchronizing the reverse idle drive gear 50 with the reverse idle drive gear 54 ( 56 and a structure in which the sub-shaft 14 is coupled to the reverse-idle driven gear 54 of the main shaft 2 and the reverse gear 36 which is always engaged.

Description

Reverse Transmission of Manual Transmission for Vehicles

The present invention relates to a reverse transmission of a manual transmission for a vehicle, and more particularly, it is possible to apply a helical gear to prevent premature wear due to noise and friction between metals, and to improve the strength of the gear teeth. A reverse gearbox for a vehicle is provided so that easy gear breakage can be eliminated.

The manual transmission employed in the vehicle is installed between the clutch and the propulsion shaft so as to shift the engine rotational force transmitted from the clutch to an appropriate rotational force necessary for driving the vehicle, so that the driving wheel of the vehicle can be rotated by the shifted rotational force.

On the other hand, the manual transmission has a constant gear type that shifts gears by shifting the gears directly by a shift lever, and gears engaged with each other by orbiting each other on the main shaft or the sub-axis, or fixed to these axes, respectively. In the constant-shift manual transmission according to the present invention, the first gear 4 and the second gear 6 are fixedly formed on the main shaft 2, as shown in FIG. And 4-gear gear 10 and 5-gear gear 12 in a state capable of revolving, and the first gear 16 and the second gear 18 in the state capable of revolving on the sub-shaft (14). In addition to forming a combination, the three-gear 20, the four-gear 22 and the five-gear 24 is fixed to form.

In addition, each of the first and second gears (4), (6), (16) and (18) on the main shaft (2) and the subshaft (14), and each of the three, four, and five gears (8), (10) and (12) ( Synchronous engagement devices 30, 32 and 34 are interposed between the first and second gears 4, 6, 16 and 18 so as to engage 20, 22 and 24 respectively. It is comprised between 3, 4, 5 gears 8, 10, 12, 20, 22, and 24.

In addition, the reverse gear 36 is coupled to the 1,2-speed synchronous gear 30 for the reverse shift, and the reverse gear 38 is fixedly formed on the main shaft 2, and the reverse of the main shaft 2 is performed. A reverse transmission R is configured to allow the gear 38 to be selectively engaged with the gear 38.

The reverse shift gear R as described above has a reverse idler gear on the reverse shaft 40 which can be moved in the axial direction as shown in FIGS. 2, 3, 4, 5, and 6. 42 is fixedly formed so that this reverse idler gear 42 is selectively engaged with the reverse gear 38 on the main shaft 2 and the reverse gear 36 on the subshaft 14 to thereby rotate the rotational force of the main shaft 2. To allow the sub shaft 14 to rotate in reverse.

By operating the respective synchronization gears 30, 32 and 34 in accordance with the above-described configuration, respective forward shifts are performed. In particular, the rearward children are moved by moving the reverse shaft 40 in the axial direction by the shift mechanism. As the gear 42 is meshed with the reverse gears 36 and 38 on the main shaft 2 and the sub-shaft 14, the reverse shift of the vehicle is achieved.

However, the conventional reverse transmission device as described above has a structure of a selection gear type that is engaged with the reverse gear of the main shaft and the minor shaft by moving the reverse idler gear in the axial direction, so that only the spur gear can be adopted. As a result of co-matching, heavy friction between metals is induced, which leads to premature wear and noise.

In addition, the conventional reversing gearbox of the manual transmission has no choice but to use only spur gears due to the characteristics of the selective gear type, which doubles the wear and noise generation as compared to employing the helical gear, and also causes easy damage to the gear teeth. There was a disadvantage.

The present invention has been made in order to solve the above-mentioned disadvantages, the object of the present invention is to transmit the rotational force of the main shaft to the sub-shaft 14 by the synchronous gear that enables the adoption of the helical gear so that the reverse shift is made. Accordingly, the present invention provides a reverse transmission apparatus for a manual transmission for a vehicle which can reduce the wear level of the gears and the occurrence of noise caused by friction between metals.

1 is a side view showing a conventional reverse transmission,

2 is a side view showing a reverse transmission according to the present invention,

3 is a side view partially showing the reverse speed shift device according to the present invention in detail.

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

5 is a one side view showing in detail the reverse transmission according to the present invention,

6 is a cross-sectional view taken along the line II-II of FIG.

* Explanation of symbols for main parts of the drawings

2: spindle 4, 16: 1 gear

6, 18: 2 gears 8, 20: 3 gears

10, 22: 4 gears 12, 24: 5 gears

14: auxiliary shaft 30, 32, 34: synchronization gear

36: Reverse Gear 50: Reverse Children Drive Gear

52: Reverse shaft 54: Reverse idle drive gear

56: reverse synchronizing device R: reverse transmission

T: Transmission housing C: Clutch housing

In order to achieve the above object, the present invention is to form a single gear and a two-gear gear fixed on the main shaft, the three-gear, four-gear and five-gear gear in a state capable of revolving, 1 on the secondary shaft In addition to forming short-term gears and two-gear gears in a state capable of revolving, three-gear gears, four-gear gears, and five-gear gears are fixedly formed; A synchronous engagement device is arranged between each of the 1st and 2nd gears and between the 3, 4, and 5 gears so that the 5 gears can be engaged with each other. A reverse gear is provided to reversely rotate the sub-axis by the rotational force of the main shaft. In the reverse transmission of the manual transmission for a vehicle, the reverse transmission unit combines the reverse idle drive gear meshed with the first gear of the main shaft so as to be revolved on the reverse shaft coupled to the transmission housing and the clutch housing. Combined with the reverse idler drive gears, the reverse idler drive gears, which can be rotated at the same time, are coupled to the reverse shaft in a state capable of revolving, and the reverse idler gears can synchronize the reversed idle drive gears with the reversed idle drive gears. In addition to providing a device, a reverse transmission device for a manual transmission for a vehicle, characterized in that the secondary shaft is configured to combine the reverse gear is always matched with the reverse idler driven gear of the main shaft.

The reverse oscillation coupling device spline-couples the clutch hub and the reverse clutch cone formed extending to one side of the reverse idler-driven gear, and is disposed outside the reverse clutch cone to spline-couple the reverse clutch cone and the sleeve, and the sleeve is reversed. It is characterized in that it is configured to be coupled by the idle drive gear and the synchronizer key.

The first gear, the backward idle drive gear and the backward idle drive gear meshed to the first gear can be smoothly rotated in a low noise state, and maintain a rigid state of increased rigidity compared to the spur gear. It is characterized by being formed as a helical gear.

In this configuration, when the sleeve is pushed to one side and the reverse clutch cone coupled to the backward idle drive gear and the reverse idle drive gear are integrated with the reverse idle drive gear, the rotational force of the main shaft is fixed to the main shaft and the first idle gear and the reverse idle drive gear, and the sleeve and the reverse A reverse idler driven gear spline-coupled with the reverse clutch cone and the reverse idler-driven gear through the clutch cone rotate the reverse gear coupled to the secondary shaft.

Hereinafter, a preferred embodiment of the present invention will be described in more detail with reference to the accompanying drawings, the same reference numerals will be given to the same parts as in the prior art.

EXAMPLE

In one embodiment according to the present invention, as shown in FIG. 2, the first gear 4 and the second gear 6 are fixedly formed on the main shaft 2, and the third gear 8 and the fourth gear are fixed. (10) and the five-gear gear 12 is formed in a state capable of revolving, and the first gear 16 and the two-gear gear 18 are formed in a state capable of revolving on the subshaft 14, The three-gear 20, the four-gear 22 and the five-gear 24 are fixedly formed, and each of the first and second gears 4, 6 and 16 on the main shaft 2 and the sub-shaft 14 is fixed. (18) and 3, 4, 5 gears (8), (10), (12), (20), (22) and (24), respectively. ) Between each 1,2 gear (4) (6) (16) (18) and each 3,4,5 gear (8) (10) (12) (20) (22) (24) It is disposed between, and is applied to a manual transmission for a vehicle configured to be provided with a reverse gear (R) for reverse rotation of the sub-shaft 14 by the rotational force of the main shaft (2).

The reverse shift unit R includes a reverse idle drive gear 50 engaged with the first gear 4 of the main shaft 2 and the reverse shaft 52 coupled to the transmission housing T and the clutch housing C. Coupled to the revolving idle drive gear 50, and optionally coupled to the reversing idle drive gear 50 can be configured to combine the reverse idle drive gear 54 with the reversing shaft 52 in a state capable of revolving. do.

In addition, the reverse idle drive gear 50 and the reverse idle drive gear 54 is provided with a reverse synchronization gear device 56 capable of selectively synchronously engaging, and the main shaft (2) on the secondary shaft (14) Combination of the reverse idler gear 54 and the reverse gear 36 that is always matched to) to configure the reverse transmission.

On the other hand, as described above, the reverse synchronization matching device 56 spline-couples the hub 60 and the reverse clutch cone 62 formed extending to one side of the reverse idler gear 54, and the reverse clutch cone 62 The sleeve 64, which is disposed on the outer side of the cover, can be splined selectively with the reverse clutch cone 62, and the sleeve 64 is synchronized with the reverse idle drive gear 50 by the synchronizer key 66. It consists of a combined structure.

On the other hand, the first stage gear 4 and the reverse idle drive gear 50 and the reverse idle drive gear 54 meshed with the first gear 4 are helical gears to smoothly rotate in a low noise state. In addition, it is possible to maintain a state of increased rigidity compared to the spur gear.

If the sleeve 64 of the reverse oscillation engagement device 56 is pushed to one side according to the configuration as described above, the sleeve 64 is splined to the reverse idler driven gear 54 and the reverse clutch cone 62. It is integrated with the reverse idle drive gear (50).

Accordingly, the rotational force of the main shaft 2 is reverse clutch cone 62 through the first gear 4 and the reverse idle drive gear 50 and the sleeve 64 and the reverse clutch cone 62 are fixed to the main shaft (2). ) And the reverse gear 36 is rotated by rotating the reverse gear 36 coupled to the sub-shaft 14 while the reverse idle drive gear 54 and the reverse idle drive gear 54 are engaged with each other. By rotating the subshaft 14 together, the vehicle can be reversed.

The reverse transmission device of the manual transmission for a vehicle according to the present invention, which performs the operation according to the above-described configuration and configuration, transmits the rotational force of the main shaft to the sub-axis by the synchronous engagement device, and also adopts the helical gear. By doing so, it is advantageous to reduce the premature wear of the gears and the incidence of noise caused by friction between metals.

In the above, the present invention has been described in only one embodiment, but as can be seen in the appended claims, those of ordinary skill in the art can be modified without departing from the spirit of the present invention, It will be understood that such variations are within the scope of the present invention.

Claims (2)

The first and second gears (4) and (6) are fixedly formed on the main shaft (2), and the three, four, and five gears (8), (10) and (12) are coupled to each other in a state capable of revolving, and the minor shaft The first and second gears 16 and 18 are coupled to each other in a state capable of revolving, and the 3, 4 and 5 gears 20, 22 and 24 are fixedly formed on the 14, and the main shaft 2 1 and 2 gears (4) (6) (16) (18) and 3,4,5 gears (8) (10) (12) (20) (22) (24) 1, 2 gears (4), 6, 16, 18 and 3, 4, 5 gears (8) (10). (12) (20) (22) and (24) disposed between, the reverse idler gear coupled to the reverse shaft and the reverse shaft coupled to the reverse shaft to reverse the rotational force of the main shaft (2) to the secondary shaft (14) In the reverse transmission of a manual transmission for a vehicle provided with a reverse transmission (R) consisting of gears, the reverse transmission (R) is a reverse idle drive gear meshed with the first gear (4) of the main shaft (2) 50) to be revolved on the reversing shaft (52). Combine with the reverse idle drive gear 50, and the reverse idle drive gear 54, which can be rotated at the same time, is coupled to the reverse shaft 52 in a state capable of revolving, and the reverse idle drive gear 50 ) And a reverse idler gearing device 56 capable of synchronizing the reverse idler driven gear 52 with the reverse idler driven gear 54 of the main shaft 2 on the auxiliary shaft 14. ) And the reverse gear 36, which is normally engaged with each other, and the reverse vibration matching device 56 includes a hub 60 and a reverse clutch cone 62 extending to one side of the reverse idle drive gear 54. Spline-coupled, and the reverse clutch cone 62 is disposed outside of the reverse clutch cone 62 to spline-couple the reverse clutch cone 62 and the sleeve 64, and the sleeve 64 is synchronized with the reverse idle drive gear 50. Characterized in that it is configured to be coupled by (66) Reverse transmission of a manual transmission vehicle. According to claim 1, wherein the first gear 4, the reverse idle drive gear 50 and the reverse idle drive gear 54 meshed with the first gear 4 is smoothly rotated in a low noise state Reverse transmission of the manual transmission for a vehicle, characterized in that formed so that the helical gear.