KR100551092B1 - Synchronizer of Manual Transmission - Google Patents

Abstract

The synchronization device of the manual transmission according to the present invention is configured such that the gear teeth of the sleeve and the gear teeth of the clutch gear are different from each other, so that an attraction force is generated between the gear teeth of the sleeve and the gear teeth of the clutch gear. In addition to the effect that the gearing state is maintained to prevent the jump-out phenomenon, and the poppet means is mounted on the inner circumferential surface of the sleeve to determine the engagement position of the sleeve and the clutch gear and the engagement between the sleeve and the clutch gear is released. It has the effect of preventing.

Manual Transmission, Synchronizer, Sleeve, Clutch Gear, Poppet Means, Magnetic Means, Jump Out

Description

Synchronizer of Manual Transmission             

1 is a side cross-sectional view showing a synchronization device of a manual transmission according to the prior art,

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

3 is a cross-sectional view showing a sleeve according to the present invention;

Figure 4 is an operating state showing the engagement state of the sleeve and the clutch gear according to the invention.

<Explanation of symbols on main parts of the drawings>

60: spindle 62: hub

64: sleeve 66: clutch gear

68: Speed Gear 70: Synchronizer Ring

80: poppet means 82: poppet case

84: poppet ball 86: elastic member

88: settling groove

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manual transmission, and more particularly, to a synchronization device of a manual transmission in which a magnetic means and a poppet means are provided between a sleeve and a clutch gear, thereby preventing a jump-out phenomenon generated when the sleeve and the clutch gear engage.

In general, the synchronous gear of the manual transmission receives the operating force of the shift lever through a shift control mechanism such as a control shaft and synchronizes the rotational speeds of the two gears when the driving gear and the driven gear are engaged so that the gears mesh with each other. It is a device that serves to prevent shift shock.

1 is a side sectional view showing a synchronization device of a manual transmission according to the prior art.

As shown in FIG. 1, the synchronizer of the manual transmission according to the related art has a hub 12 splined to the main shaft 10 and a gear formed on an outer circumferential surface thereof, and axially moved from the outer circumferential surface of the hub 12. A sleeve 14 coupled to each other, a speed gear 16 coupled to and rotated by a bearing on the main shaft 10, a clutch gear 18 formed on one side of the speed gear 16, and the speed gear ( And a synchronizer ring 20 positioned between the hub 16 and the hub 12 to synchronize with the movement of the sleeve 14.

In addition, a key 22 is further included between the hub 12 and the sleeve 14 to secure the hub 12 and the sleeve 14 to each other.

The key 22 has a projection at the back part and fits into three key grooves formed along the circumferential direction of the hub 12. The key 22 is in close contact with the sleeve 14 on the hub 12 side. Spring 24 is installed.

The synchronizer ring 20 receives a force from the key 22 when the sleeve 14 moves in the axial direction and is coupled to the cone portion formed in the clutch gear 18 by a conical clutch.

Looking at the operation of the synchronization device of the manual transmission according to the prior art configured as described above are as follows.

First, when the driver's shift lever operating force is transmitted to the sleeve 14 through the shift fork, the sleeve 14 is axially moved while sliding from the outside of the hub 12.

When the sleeve 14 is moved axially, the key 22 is moved by the sleeve 14, and the end of the key 22 pressurizes the synchronizer ring 20.

When the synchronizer ring 20 is pressurized by the key 22, the synchronizer ring 20 is in contact with the cone of the clutch gear 18 of the speed gear 16 and clutched by mutual frictional force. By acting, the rotation speed of the speed gear 16 is synchronized with the rotation speed of the main shaft 10.

When the sleeve 14 is engaged with the outer circumferential surface of the synchronizer ring 20, the sleeve 14 moves through the synchronizer ring 20 until it is engaged with the outer circumferential surface of the clutch gear 18.

When the sleeve 14 is completely engaged with the clutch gear 18, the hub 12 and the speed gear 16 are mechanically connected so that the speed gear 16 rotates at the same speed as the main shaft. .

However, the synchronization device of the manual transmission according to the related art is that the engagement is released due to an external shock or the speed difference between the sleeve 14 and the clutch gear 18 when the sleeve 14 is engaged with the clutch gear 18. There is a problem that a jump out phenomenon occurs.

When a jump out occurs while driving as described above, there is a problem that a sudden increase in the speed of the engine may damage the engine or cut off power to the wheel side, causing a safety accident.

The present invention has been made to solve the above-mentioned problems of the prior art, and has a magnetic means for generating an attraction force to the chamfer portion of the sleeve and the clutch gear, and also a poppet means for determining the position between the sleeve and the clutch gear It is an object of the present invention to provide a synchronization device of a manual transmission that can prevent the jump-out phenomenon of the sleeve and the clutch gear by mounting.

Synchronous apparatus of a manual transmission according to the present invention for solving the above problems is coupled to the outer peripheral surface of the hub axially moved, a speed gear formed with a clutch gear to be engaged with the sleeve, and provided on the inner peripheral surface of the sleeve And a poppet means which is in close contact with an outer circumferential surface of the clutch gear and fixes the position when the sleeve is engaged with the clutch gear.

In addition, the sleeve and the clutch gear is characterized in that it comprises magnetic means for generating an attraction force to prevent the jump-out phenomenon when the sleeve is engaged with the clutch gear.

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

Figure 2 is a side cross-sectional view showing a synchronous device of a manual transmission according to the present invention, Figure 3 is a cross-sectional view of the sleeve according to the present invention, Figure 4 is an operating state diagram showing the engagement state of the sleeve and the clutch gear according to the present invention. to be.

2 to 4, the synchronization device of the manual transmission according to the present invention is a spline coupled to the main shaft 60, the gear 62 is formed on the outer peripheral surface and the shaft on the outer peripheral surface of the hub 62 A speed gear 68 having a sleeve 64 coupled to move in a direction, a clutch gear 66 coupled to the main shaft 60 by bearings and engaged with the sleeve 64, and the speed gear 68; ) And a synchronizer ring 70 positioned between the hub 62 and synchronous with the movement of the sleeve 64.

The synchronizer ring 70 is formed to be coupled to the cone portion formed in the clutch gear 66 by a conical clutch when the sleeve 64 moves in the axial direction.

In addition, the inner circumferential surface of the sleeve 64 is in close contact with the outer circumferential surface of the clutch gear 66 to determine a position when the sleeve 64 is engaged with the clutch gear 66 and the sleeve 64 and the clutch gear ( Poppet means (80) for securing the position of the 66 is provided.

The poppet means 80 is a poppet case 82 fixed to an inner circumferential surface of the sleeve 64 and a poppet ball exposed to the front end of the poppet case 82 in contact with an outer circumferential surface of the clutch gear 66. And an elastic member 86 provided in the poppet case 82 to provide elastic force to the poppet ball 84.

Here, the sleeve 64 has a plurality of gear teeth (64a) is formed on the inner peripheral surface, the clutch gear 66 is a gear tooth (66a) respectively corresponding to mesh with the gear teeth (64a) of the sleeve (64) Is formed.

A groove is formed in the radial direction between the gear teeth 64a of the sleeve 64, and the poppet case 82 is fixed to the groove.

In addition, a seating groove 88 corresponding to the poppet ball 84 is formed in the gear tooth 66a of the clutch gear 66 so that the poppet ball 84 is seated and fixed in position.

The elastic member 86 is a spring that provides an elastic force in a direction in which the poppet ball 84 is in close contact with the gear tooth 66a of the clutch gear 66.

In addition, the poppet means 80 is fixed along the circumferential direction on the inner circumferential surface of the sleeve 64 so as to securely secure the engagement position of the sleeve 64 and the clutch gear 66 and prevent the release of engagement. At least one is provided at a position spaced at a predetermined angle.

That is, four poppet means 80 are provided at three positions spaced 120 degrees from the inner circumferential surface of the sleeve 64.

Meanwhile, an attraction force is generated between the sleeve 64 and the clutch gear 66 so that the engagement of the sleeve 64 and the clutch gear 66 is released when the sleeve 64 is engaged with the clutch gear 66. Magnetic means for preventing the jumping out phenomenon is provided.

The magnetic means is made by magnetizing the parts in contact with each other in the gear teeth 64a of the sleeve 64 and the gear teeth 66a of the clutch gear 66 have different poles.

That is, as shown in Figure 5, the gear teeth of the sleeve 64 so that the attraction force to each other on the gear teeth (64a) side of the sleeve 64 and the gear teeth (66a) side of the clutch gear 66. 64a has an S pole, and the gear tooth 66a of the clutch gear 66 is magnetized to have an N pole.

Looking at the operation of the synchronization device of the manual transmission according to the present invention configured as described above are as follows.

First, when a driver's shift lever (not shown) operating force is transmitted to the sleeve 64, the sleeve 64 is axially moved while sliding at the outside of the hub 62.

When the sleeve 64 is moved in the axial direction, the inner circumferential surface of the sleeve 64 is engaged with the synchronizer ring 70 located forward.

When the sleeve 64 is engaged with the synchronizer ring 70, the cone portion of the synchronizer ring 70 is contacted with the cone portion of the clutch gear 66 by the force pushed by the sleeve 64 to mutual frictional force. By the clutch action, the rotation speed of the speed gear 68 is synchronized with the rotation speed of the main shaft.

In addition, the sleeve 64 is engaged with the synchronizer ring 70 and continues to move while maintaining a synchronous state, whereby the gear tooth 64a of the sleeve 64 is the gear tooth 66a of the clutch gear 66. ) Is matched with).

At this time, as shown in Figure 5, because the attraction force to attract each other between the gear teeth (64a) of the sleeve 64 and the gear teeth (66a) of the clutch gear 66 generates vibration from the outside or Even when an impact is transmitted, the sleeve 64 and the clutch gear 66 are able to remain engaged.

In addition, when the sleeve 64 is engaged with the clutch gear 66, the poppet ball 84 is in rolling contact along the outer circumferential surface of the clutch gear 66, and then the gear teeth 66a of the clutch gear 66 are engaged. By being inserted into the seating groove 88 formed in the, the poppet ball 84 serves to determine the engagement position of the sleeve 64 and the clutch gear 66.

Here, the poppet ball 84 is fixed to the seating groove 88 because the elastic member 86 imparts an elastic force in the direction in which the poppet ball 84 is in close contact with the seating groove 88. .

When the poppet ball 84 is inserted into the seating groove 88, a state where the sleeve 64 and the clutch gear 66 are engaged with each other may be maintained to fix the mutual position.

Thereafter, when the sleeve 64 is completely engaged with the clutch gear 66, the hub 62 and the speed gear 68 are mechanically connected, so that the speed gear 68 has the same speed as the main shaft 60. Rotation will be made to shift.

Synchronization apparatus of the manual transmission according to the present invention configured as described above is configured so that the gear teeth of the sleeve and the gear teeth of the clutch gear have different magnetic, so that the attraction force between the gear teeth of the sleeve and the gear teeth of the clutch gear. Therefore, the engagement state of the sleeve and the clutch gear is maintained, thereby preventing the jump-out phenomenon.

In addition, the poppet means is mounted on the inner circumferential surface of the sleeve to determine the position of engagement between the sleeve and the clutch gear, and to fix the position of the sleeve and the clutch gear, thereby preventing the engagement from being released.

Claims (8)

A sleeve coupled to the outer circumferential surface of the hub and axially moved; A speed gear having a clutch gear meshed with the sleeve; And a poppet means which is provided on an inner circumferential surface of the sleeve and is in close contact with the outer circumferential surface of the clutch gear to determine a position at which the sleeve engages with the clutch gear. . The method of claim 1, The poppet means includes a poppet case fixed to a groove formed in at least one of an inner circumferential surface of the sleeve and an outer circumferential surface of the clutch gear, a poppet ball exposed to the front end of the poppet case and in contact with the outer circumferential surface of the clutch gear; A synchronization device of a manual transmission, characterized in that it is composed of an elastic member provided in the poppet ball to provide an elastic force to the poppet ball. The method of claim 2, And a seating groove corresponding to the poppet ball is formed on the other of the inner circumferential surface of the sleeve and the outer circumferential surface of the clutch gear so as to be in close contact with the poppet ball. The method of claim 3, wherein The poppet means is a synchronization device of a manual transmission, characterized in that at least one is provided at a position spaced at a predetermined angle along the circumferential direction. The method according to any one of claims 1 to 4, And a magnetic means provided in each of the sleeve and the clutch gear to generate an attraction force to prevent a jump-out phenomenon when the sleeve is engaged with the clutch gear. The method of claim 5, The sleeve has a plurality of gear teeth are formed on the inner peripheral surface, the clutch gear is a synchronization device of a manual transmission, characterized in that the corresponding gear teeth are formed so as to mesh with the gear teeth of the sleeve. The method of claim 6, And said magnetic means are magnetized so that the parts in contact with each other in the gear teeth of the sleeve and the gear teeth of the clutch gear have different poles. A sleeve coupled to the outer circumferential surface of the hub and axially moved; A speed gear having a clutch gear meshed with the sleeve; And a magnetic means provided in each of the sleeve and the clutch gear to generate an attraction force to prevent a jump-out phenomenon when the sleeve is engaged with the clutch gear.

Images