KR100435547B1 - Reverse noise - Google Patents

Abstract

The anti-resonance device in the reverse shift of the manual transmission is rotatably mounted on the reverse idler shaft, and the friction member placed between the transmission input shaft and the bite-rotated rotor and the rotating body and the reverse idler shaft and the projection of the reverse idler gear during reverse shifting. Since the ball is pressed by the spring and disposed between the ball and the friction member is composed of a simple structure and low production cost.

Description

Anti-noise device for reverse shift of manual transmission {Reverse noise}

The present invention relates to a ringing prevention device during reverse shifting of a manual transmission, and more particularly, to a ringing prevention device during reverse shifting of a manual transmission having a simple structure and low production cost.

In general, the reverse shift of the manual transmission is a reverse idler gear 14 freely rotatably mounted on the reverse idler shaft 4 fixed to the transmission housing 2 as shown in FIG. 1. The reverse speed gear 16 is mechanically driven by the input shaft 6 and a synchronous device (not shown) after being axially moved between the speed gear 16 and the reverse transmission gear 18 of the output shaft 8 and engaged with each other. By connecting.

Here, when the reverse idler gear 14 is engaged with the reverse speed gear 16 and the reverse transmission gear 18, the driving force of the engine before the gear engagement does not occur while the gear teeth collide with each other due to the rotation difference between the gears. In the state in which transmission to this input shaft 6 is interrupted | blocked, an anti-ring device which completely stops the input shaft 6 rotated by rotational inertia is mounted.

As shown in FIG. 2, the anti-sounding device is axially movable on the hub gear 22 splined to the input shaft 6 and the gear portion 23 formed on the outer circumferential surface of the hub gear 22. A sleeve 24 and a protrusion 25 inserted into a groove 24a formed on an inner circumferential surface of the sleeve 24 to form a synchronizer key 26 that is axially moved together with the sleeve 24, and the sleeve A synchronizer ring disposed on one side of the 24 to receive an axial action force from the synchronizer key 26 when the sleeve 24 moves, and a synchronizer to friction with the synchronizer ring 28. The niger cone 30 and one side of the synchronizer cone 30 are fitted, and the brake plate 32 is integrally protruded from the transmission housing 2.

The anti-sounding device is such that when the shifter shifts the synchronizer key 26 along with the sleeve 24 in the axial direction to push the synchronizer ring 28 toward the synchronizer cone 30, the sleeve 24 is synchronized with the synchronizer. An axial movement is prevented by the projections 25 of the niger keys 26 and the synchronizer ring 28 frictionally acts on the synchronizer cone 30.

At this time, when the sleeve 24 is further moved in the axial direction by the operation of the shift lever, the engagement with the synchronizer key 26 is released and is engaged with the synchronizer ring 28. The rotation of 24 stops the input shaft 6 which is rotated by the rotational inertia.

Reference numeral 36 denotes a locking nut 36 for preventing axial separation of components mounted on the input shaft 6, and reference numeral 38 denotes the locking nut 36, the hub gear 22, and the synchronizer cone ( 30 is a spacer 38 interposed between them.

However, in the reverse shifting of the manual transmission according to the prior art, the ringing prevention device is composed of a plurality of parts, and the structure is complicated, and since the component parts are relatively expensive, there is a problem in that the production cost is high.

The present invention has been made to solve the above problems of the prior art, it is an object of the present invention to provide a ring-proof device during the reverse shift of the manual transmission with a simple structure and low production cost.

1 is a reverse shift operation state of a typical manual transmission,

Figure 2 is a cross-sectional view showing the ringing prevention device during the reverse shift of the manual transmission according to the prior art,

Figure 3 is a cross-sectional view showing the ringing prevention device during the reverse shift of the manual transmission according to the present invention,

Figure 4 is a cross-sectional view of the ringing prevention device at the reverse shift during the reverse shift of the present invention,

5 is a cross-sectional view of the anti-ringing device in the reverse shift after the reverse shift is completed according to the present invention.

<Explanation of symbols on main parts of the drawings>

52: input shaft 56: reverse idler shaft

62: reverse speed gear 64: second speed gear

66: reverse idler gear 66a: recessed groove

66b: projection 70: rotating body

73: hole of the rotating body 76: friction member

82: ball 84: spring

An anti-leak device for a reverse shift of a manual transmission according to the present invention for solving the above problems is a reverse idler shaft supporting a transmission input shaft and a reverse idler gear axially moved to engage with a reverse speed gear mounted on the transmission input shaft. And a rotating body mounted to the reverse idler shaft and integrally rotated with the transmission input shaft, a friction member disposed between the rotating body and the reverse idler shaft, and the friction means in close contact with the reverse idler shaft during reverse shifting. Compression means for stopping the rotating body.

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

In the reverse shift assembly of the manual transmission according to the present invention, as shown in FIG. 3, the transmission input shaft 52 receives the driving force of the engine and the reverse speed gear 62 fixed to the transmission input shaft 52 and rotated together. And an output shaft (not shown) for transmitting the driving force of the shifted engine to the drive wheels, a reverse gearbox (not shown) rotated together with the output shaft, and axially moved to the reverse speed gear 62 and the reverse transmission gear, respectively. A reverse idler gear 66 to be engaged, a reverse idler shaft 56 rotatably supporting the reverse idler gear 66 and fixed to a transmission housing (not shown), and the reverse speed gear 62 during reverse shifting. Stop the input shaft 52 which is being rotated by the rotational inertia so that the gear teeth collide with each other due to the relative rotation difference between the motor and the reverse idler gear 66. When the reverse transmission is made in echo cancellation devices.

The reverse anti-retraction device is rotatably mounted to the reverse idler shaft 56 and is integrally rotated with the input shaft 52, and between the rotor 70 and the reverse idler shaft 56. The friction member 76 and the friction member 76 in contact with the reverse idler shaft 56 at the time of the reverse shift by pressing means for restraining the rotation of the rotor 70 and the input shaft 52. It is composed.

Here, the rotating body 70 is formed in a cylindrical shape fitted to the reverse idler shaft 56, the gear portion 71 is formed on one side of the outer peripheral surface so that the gear portion 71 of the reverse speed gear 62 By always biting with the second speed gear 64 located on the left side is linked with the transmission input shaft 52 by the gear bite.

The rotor 70 is prevented from being worn by the bushing 68 disposed between the reverse idler shaft 56 and the groove 70a of the reverse idler shaft 56 positioned next to the right side. An axial movement is constrained by the resiliently fitted snap ring 59.

In addition, the rotor 70 is not formed with the gear portion 71 and a plurality of radially in the portion 72 protruding toward the reverse idler gear 66 around the gear portion 71. A hole portion 73 is formed so that the hole portion 73 penetrates the reverse idler shaft 56.

Next, the friction member 76 is inserted into a portion (73a) of the end portion in contact with the reverse idler shaft 56 in the hole portion 73 of the rotating body 70 is extended to the reverse idler shaft 56 and I'm in contact.

The pressing means is provided in the projection 66b protruding from the reverse idler gear 66 and the hole portion 73 of the rotating body 70 to be pressed by the projection 66b to receive the friction member 76. It is composed of a pushing member 83 that is in close contact with the reverse idler shaft 56.

In particular, the pushing member 83 is used by the elastic force of the spring, is inserted into the hole portion 73 of the rotating body 70 so as not to be separated when in contact with the projection (66b) of the reverse idler gear 66. The ball 82 is formed in a spherical shape so that the reverse idler gear 66 axially moved, and the ball 82 and the friction member 76 are disposed so that the ball 82 is a reverse idler gear 66. It is composed of a spring (84) that presses the friction member (76) with a compressive force generated when it is pressed by the projection (66b) of the) and performs a damping action.

Here, the ball 82 is formed so that the diameter of the end (73b) in the direction opposite to the portion (73a) extending from the hole portion 73 of the rotating body 70 is smaller than the diameter of the ball (82) Departure from the hole portion 73 of the rotating body 70 is prevented.

In addition, one end of the spring 84 is fixed to the friction member 76 fixed to the portion 73a extended from the hole portion 73 of the rotating body 70, the ball on the other end of the spring (84) By being seated so that the 82 is fixed, the ball 82 may be prevented from being separated from the hole 73 of the rotating body 70.

In addition, if the spring coefficient 84 is too small, the compression force generated by the reverse idler gear 66 is small, and the transmission input shaft 52 is disposed between the friction member 76 and the reverse idler shaft 56 during the reverse shift. The frictional sound is caused by not generating enough friction force to stop the operation. If the elastic modulus is too large, the elastic modulus may not be compressed by the projection 66b.

On the other hand, the reverse idler gear 66 is moved in the axial direction so that the engaging portion 72 is formed in the hole portion 73 in the rotating body 70 to be engaged with the reverse speed gear 62 and the reverse transmission gear. The mouth groove 66a is formed, and the protrusion 66b is formed in the recess groove 66a so as to correspond to the hole portion 73 of the rotating body 70 so that the ball 82 of the pushing member 83 is shifted backward. Move by pressing).

Looking at the operation of the present invention configured as described above are as follows.

If the vehicle is driven forward and the shift is set to the neutral state for the reverse shift, the transmission input shaft 52 is rotated by the rotational inertia while the transmission of the driving force of the engine is blocked, and the rotational force 70 continues to be rotated by the gear bite. Is received and is rotated.

In such a state, the reverse idler gear 66 is axially moved toward the reverse speed gear 62 and the reverse gear by the reverse shift operation, so that the projection 66b of the reverse idler gear 66 is rotated by the rotating body ( When the hole 73 of 70 is reached, the ball 82 of the pushing member 83 moves the reverse idler shaft 56 by the projection 66b of the reverse idler gear 66 as shown in FIG. 4. The spring 84 is compressed while pushing toward it.

At this time, the compressive force generated in the spring 84 is transmitted to the friction member 76 to generate a friction force between the friction member 76 and the reverse idler shaft 56, thereby causing the rotation body 70 and the input shaft. The rotational force of 52 gradually decreases and eventually stops.

Next, when the reverse idler gear 66 continues to move axially beyond the ball 82, as shown in FIG. 5, the reverse idler gear 66 smoothly bites without friction due to the relative rotational difference between the reverse speed gear 62 and the reverse transmission gear. As the force applied to the ball 82 is released by the projection 66b of the reverse idler gear 66, the ball 82 is partially rotated again by the restoring force of the spring 84. Protruding out of the hole portion 73 of the and the friction force generated between the friction member 76 and the reverse idler shaft 56 is eliminated.

Therefore, since the restraint by the friction member 76 of the rotor 70 and the input shaft 52 is released, the vehicle can be driven backward by the driving force of the engine transmitted to the input shaft 52.

In the present invention configured as described above, the anti-emission device for the reverse shift of the manual transmission is rotatably mounted on the reverse idler shaft, and a friction member placed between the transmission input shaft and the gear bite rotating body and the rotating body and the reverse idler shaft; Since the ball is pressed by the projection of the reverse idler gear during the reverse shift and a spring disposed between the ball and the friction member, the structure is simple and the production cost is low.

Claims (8)

A reverse idler shaft supporting a transmission idler shaft, a reverse idler gear axially moved to engage with a reverse speed gear mounted to the transmission input shaft, a rotating body mounted to the reverse idler shaft and integrally rotated with the transmission input shaft; And a friction member disposed between the rotating body and the reverse idler shaft, and pressing means for bringing the friction member into close contact with the reverse idler shaft during the reverse shift to stop the rotating body. Device. The method of claim 1, The rotating body is an anti-clocking device during a reverse shift of a manual transmission, characterized in that a gear portion which is constantly bitten with a speed gear positioned next to a reverse speed gear among a plurality of speed gears mounted on the transmission input shaft. The method of claim 2, The gear unit of the rotating body is a ringing prevention device during the reverse shift of the manual transmission, characterized in that always bite with the two-speed gear of the transmission input shaft. The method of claim 1, The rotating body is a ring preventing device during the reverse shift of the manual transmission, characterized in that the axial fine movement is prevented by the snap ring fitted into the groove formed in the reverse idler shaft. The method of claim 1, The pressing means includes a protrusion protruding from the reverse idler gear, and a pushing member installed in a hole formed in a radial direction of the rotating body to receive a pressing force by the protrusion to bring a friction member into close contact with the reverse idler shaft. Anti-ringing device for reverse shift of manual transmission. The method of claim 5, wherein The pushing member is composed of a spherical ball inserted into the hole portion of the rotating body so as not to be separated, and a spring disposed between the ball and the friction member to transfer the compressive force generated by the projection to the friction member. Anti-ringing device for reverse shift of manual transmission. The method of claim 6, The ball has a ring diameter of the end of the hole of the rotating body is smaller than the diameter of the ball to prevent the departure from the hole, characterized in that the anti-emission device during the reverse shift. The method of claim 6, The ball is formed integrally with the spring and the friction material to prevent the ringing of the manual transmission, characterized in that the departure from the hole is prevented.