KR100578753B1 - Synchronizer for Manual Transmission and Separating Ring therefor - Google Patents

Abstract

The present invention relates to a synchronizer of a manual transmission and a positioning ring used therein, the middle ring being coupled to the side of the clutch gear and having a friction surface formed on the outer circumferential surface and the inner circumferential surface, respectively located on the outer circumferential side and the inner circumferential side of the middle ring. In the synchronizer of the manual transmission including the outer ring and the inner ring which is coupled to the outer peripheral surface and the inner circumferential surface of the middle ring or the outer ring and the inner ring are restrained and coupled to each other in the rotational direction, between the outer ring and the inner ring Positioning ring is provided to provide an elastic force so that the outer ring and the inner ring can be easily separated from the middle ring, thereby preventing the aging between the synchronizer rings, thereby increasing the durability life of the synchronizer ring. And the effect of improving the shifting feeling is provided. .

Synchronizer, Seizing, Ring, Sleeve, Clutch Gear

Description

Synchronizer of manual transmission and positioning ring used for it {Synchronizer for Manual Transmission and Separating Ring therefor}             

1 is a cross-sectional view showing a synchronizer of a conventional manual transmission;

2 is a cross-sectional view showing a synchronizer of a manual transmission according to the present invention;

Figures 3a and 3b is a view showing a positioning ring which is a major component of the present invention, Figure 3a is a front view, Figure 3b is a side view.

Figure 4 is a cross-sectional view of the main part showing a state in which the position adjustment ring is installed according to the present invention.

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

51: spindle 52: hub gear

54: sleeve 55: speed gear

56: outer ring 56a: lug portion

57: middle ring 58: inner ring

58a: groove 60: clutch gear

70: positioning ring

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synchronizer of a manual transmission. In particular, a synchronizer of a manual transmission and its use to prevent the sizing of the synchronizer ring, thereby increasing the service life of the synchronizer ring and improving the feeling of shifting. It relates to a position adjustment ring.

1 is a cross-sectional view showing a double cone method of the synchronizer of the manual transmission of the prior art.

Referring to FIG. 1, a double cone type synchronizer of a conventional manual transmission is splined to a main shaft 11 constituting an input shaft or an output shaft of a transmission, and a slit around the outer circumference of the hub gear 12. In the state in which the eve 14 is bitten, the synchronous action is realized by moving in the axial direction by the action of the shift fork 13.

Next to the hub gear 12 is a speed gear 15 is mounted to be idling to the main shaft 11 is engaged to the gear shift side of the other shaft to transmit the shifting power, the speed gear 15 is the sleeve A clutch gear 20 is provided so that 14 is engaged and rotates synchronously.

In particular, a keyless spring 19, an outer ring 16, and an inner ring are provided between the sleeve 14 and the clutch gear 20 so that a natural synchronous rotation occurs when the sleeve 14 is moved. 18, the middle ring 17, etc. are provided.

Here, the middle ring 17 is in a state of being integrally coupled to the clutch gear 20, the outer ring 16 and the inner ring 18 are located on the outer peripheral side and the inner peripheral side, respectively. The outer ring 16 and the inner ring 18 are coupled to each other to be constrained in the rotational direction so as to be in close contact with the inner and outer circumferential surfaces of the middle ring 17 in accordance with the movement of the sleeve 14 to act as a clutch. do.

In addition, a keyless spring 19 is provided between the outer ring 16 and the sleeve 14 to provide pressure to the outer ring 16 when the sleeve 14 is moved for gear shifting. do.

Referring to the operation of the conventional double cone type synchronizer as described above, when the sleeve 14 is moved by the shift fork 13 operated by the shift lever, the keyless spring 19 is moved while the outer ring ( 16) is pushed toward the clutch gear 20.

As the outer ring 16 moves, the outer ring 16 is in close contact with the middle ring 17, and at the same time, the inner ring 18 is in contact with the inner ring 18, thereby clutching by the friction force in the inner and outer directions. The rotation speed of 15 is synchronized with the rotation speed of the main shaft 11.

Here, the outer ring 16 and the inner ring 18 may be connected to the middle ring 17 of the clutch gear 20 except when the sleeve 14 meshes with the clutch gear 20 when the gear shifts. It is necessary to make sure that the rotational force of the main shaft 11 is not transmitted to the speed gear 15 side.

That is, the outer ring 16 and the inner ring 18 are fixedly coupled through the sleeve 14 and the keyless spring 19, and the sleeve 14 is the main shaft 11 and the hub gear 12. Since the outer ring 16 and the inner ring 18 are in contact with the clutch gear 20 side, a certain amount of power is transmitted between the speed gear 15 and the main shaft 11. .

However, the synchronizer of the conventional manual transmission as described above has a structure in which the outer ring 16 and the inner ring 18 are in close contact with the middle ring 17 to be synchronized only at the time of shifting. Due to the shaking or impact of each mechanism, friction is easily generated between the outer ring 16 and the inner ring 18 and the middle ring 17, and thus the outer ring 16 and the inner ring 18 Wearing the middle ring 17 and the like is easily made, and there is a problem that a shifting defect is also easily generated when the other end is shifted.

In addition, the outer ring 16 and the inner ring 18 are middle when the sleeve 14 engages with the clutch gear 20 and is separated after acting as an element to increase the drag during initial start-up or at low temperature. Since it is not easily separated from the ring 17 to achieve a certain amount of power transmission, it is difficult to engage with other gears, resulting in a decrease in durability as well as deterioration in shifting performance.

The present invention has been made to solve the above problems, an object of the present invention is to provide a separate positioning spring between the inner ring and the outer ring to prevent the aging between the synchro rings (during parts) The present invention provides a synchronizer of a manual transmission and a positioning ring used therefor that can increase the service life and improve the reliability and gear shifting of the gear shift.

Synchronizer of the manual transmission according to the present invention for realizing the above object, the middle ring is coupled to the side of the clutch gear and the friction surface is formed on the outer peripheral surface and the inner peripheral surface, respectively located on the outer peripheral surface side and the inner peripheral surface side of the middle ring In a synchronizer of a manual transmission including an outer ring and an inner ring that are in close contact with or separated from each other in a rotational direction while being in close contact with or separated from the outer and inner circumferential surfaces of the middle ring, the outer ring, inner ring, and middle ring Is formed in a ring (ring) structure so as to be located between, the second bent portion to provide an elastic force in the direction in which the first bent portion and the outer ring and the middle ring is separated to provide an elastic force in the direction in which the outer ring and the inner ring are separated. It characterized in that it comprises a position adjusting means each formed.
The position adjusting means is configured to be freely positioned to provide an elastic force without being constrained to any one of the outer ring, inner ring, and middle ring.

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

Figure 2 is a cross-sectional view showing a synchronizer of the manual transmission according to the present invention, Figures 3a and 3b is a front view and a side view showing a positioning ring which is a major component of the present invention, Figure 4 is in accordance with the present invention It is sectional drawing of the principal part which shows the state in which the positioning ring is installed.

FIG. 2 illustrates a keyless type double cone type of the synchronizer of the manual transmission, in which a hub gear 52 is splined to the main shaft 51, and a sleeve 54 is formed on the outer circumference of the hub gear 52. ) Is moved in the axial direction by the action of the transmission fork 53 in the bite state.

Next to the hub gear 52 is a speed gear 55 mounted to be idle on the main shaft (51). On the contrary, when the hub gear 52 is coupled to the main shaft 51 to be idling, the speed gear 55 is coupled to the main shaft 51 in a spline manner.

The speed gear 55 is provided with a clutch gear 60 engaged with the sleeve 54 so as to be synchronously rotated. The sleeve 54 is disposed between the clutch gear 60 and the sleeve 54. A keyless spring 59, an outer ring 56, an inner ring 58, a middle ring 57, and the like are provided to allow gradual synchronous rotation when moved.

That is, the middle ring 57 is coupled to the side surface of the clutch gear 60 and a friction surface is formed on the outer circumferential surface and the inner circumferential surface, and the outer ring 56 and the inner ring 58 are the middle ring 57. Located on the outer circumferential surface side and the inner circumferential surface side of each of the close to the outer circumferential surface and the inner circumferential surface of the middle ring 57 in accordance with the movement of the sleeve 54 is to act as a clutch.

In addition, the outer ring 56 is provided with a lug portion 56a extending in the direction of the inner ring 58 so that the outer ring 56 and the inner ring 58 may be coupled to each other in a rotational direction. The inner ring 58 is formed with a groove portion 58a into which the lug portion 56a is inserted and coupled.

In addition, a keyless spring 59 is provided between the outer ring 56 and the sleeve 54 to provide pressure to the outer ring 56 when the sleeve 54 is moved for gear shifting. .

Positioning ring 70 provides an elastic force between the outer ring 56 and the inner ring 58 so that the outer ring 56 and the inner ring 58 can be easily separated from the middle ring 57. This is installed.

The positioning ring 70 is an annular ring as shown in FIGS. 3A and 3B so as to be located between the middle ring 57 and the outer ring 56 at an outer position of the inner ring 58. ) And a direction in which the first curved portion ab and the outer ring 56 and the middle ring 57 are separated to provide an elastic force in a direction in which the outer ring 56 and the inner ring 58 are separated. It has a second bend cd to provide an elastic force.

The first curved portion ab is formed to provide an elastic force while contacting (a and b portions) the inner circumferential surface of the outer ring 56 and the outer circumferential surface of the inner ring 58, respectively, and the second curved portion cd is The lug portion 56a and the inner ring 58 of the outer ring 56 are respectively contacted (d and c portions) and are formed to provide elastic force.

As a result, as shown in FIG. 4, the position adjusting ring 70 may provide elastic force in the radial and axial directions of the ring between the space formed by the outer ring 56, the middle ring 57, and the inner ring 58. The first bent portion ab and the second bent portion cd are continuously formed to have the same.

Referring to the operation of the synchronizer of the manual transmission according to the present invention configured as described above are as follows.

When the sleeve 54 moves toward the clutch gear 60 by the operation of the shift lever during gear shifting, the outer ring 56 and the inner ring 58 are moved by the force of the sleeve 54 to adjust the position ring ( 70 is pressed against the middle ring 57 to achieve synchronous rotation.

On the contrary, when the sleeve 54 moves to the neutral position or is in the neutral position, the force of the sleeve 54 does not act on the outer ring 56 and the inner ring 58, so that the outer ring 56 And the inner ring 58 are completely separated from the middle ring 57 of the clutch gear 60 while being opened by the restoring force of the position adjusting ring 70.

Therefore, the outer ring 56 and the inner ring 58 do not contact the middle ring 57 so that mutual friction does not occur, and the rotational force of the main shaft 51 and the rotational force of the speed gear 55 are constrained to each other. Since it is not free, it is possible to improve gearing performance or gear shifting and neutral position, thereby improving gearing performance.

As described above, the synchronizer of the manual transmission of the present invention and the positioning ring used therein are provided with a separate positioning ring between the inner ring, the outer ring, and the middle ring to prevent aging between the synchro rings. Because it is configured to prevent, it increases the service life of the parts and provides the advantage that the gear shifting reliability and shifting feeling can be improved.

That is, according to the present invention, since the outer ring and the inner ring are reliably separated from the middle ring of the clutch gear when the sleeve is in the neutral position, the loss of friction due to the synchro ring and the middle ring is prevented as well as the power cut is made reliably. There is an advantage that the shifting performance is improved.

Claims (8)

A middle ring coupled to the side of the clutch gear and having friction surfaces formed on the outer and inner circumferential surfaces thereof, and positioned on the outer and inner circumferential surfaces of the middle ring, respectively, in close contact with or separated from the outer and inner circumferential surfaces of the middle ring, thereby simultaneously rotating the clutch. In a synchronizer of a manual transmission including an outer ring and an inner ring which are constrained to each other in a direction, Is formed in a ring (ring) structure so as to be located between the outer ring, the inner ring, the middle ring, wherein the first bent portion and the outer ring and the middle ring to provide an elastic force in a radial direction in which the outer ring and the inner ring is separated Synchronizer of the manual transmission characterized in that it comprises a positioning means each formed with a second bent portion to provide an elastic force in the axial direction to be separated. The method of claim 1, The first bent portion is synchronized with the inner circumferential surface of the outer ring and the outer circumferential surface of the inner ring, the synchronizer of the manual transmission, characterized in that formed to provide an elastic force. The method of claim 1, The outer ring has a lug portion to be combined with the inner ring, The second bent portion is synchronized with the lug portion and the inner ring of the outer ring, the synchronizer of the manual transmission, characterized in that formed to provide an elastic force. The method according to any one of claims 1 to 3, The position adjusting means is a synchronizer of a manual transmission, characterized in that configured to provide an elastic force freely restrained without being bound to any one of the outer ring, inner ring, middle ring. delete delete delete delete

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