KR100398332B1 - synchronizer of manual transmission - Google Patents

Abstract

According to the present invention, a synchronous action is performed by a motor method, and thus the structure thereof can be simplified, the number of parts can be drastically reduced, the number of assembly processes can be greatly reduced, and the cost can be reduced. It is to provide a synchronous device for a manual transmission that is easy to operate because the synchronous action is made, and can be shifted regardless of the synchronous capacity, which can improve durability and shift performance.

The synchronizing device for the manual transmission includes a clutch hub which is spline-coupled on a main shaft driven with power transmitted from an engine and rotated integrally with the main shaft, and is screwed to move in an axial direction on a gear part of an outer circumferential surface of the clutch hub. A speed gear formed at both sides of the sleeve, a clutch gear disposed at both sides of the sleeve and meshed with the sleeve, and driving means for moving the sleeve in an axial direction when a power source is provided at regular intervals on the outer circumferential surface of the sleeve; It comprises a control means for controlling the current supplied to the drive means.

Description

Synchronizer for manual transmission {synchronizer of manual transmission}

The present invention relates to a synchronous device for a manual transmission, and more particularly to a synchronous device for a manual transmission that can improve shift operation convenience, improve shift performance and durability, and can greatly reduce the number of parts. It is about.

In general, the gear biting method of the manual transmission includes a perturbation gear type, a constant bit type, and a synchronous bit type. Recently, a manual transmission mainly adopts a perturbation type and a synchronous bit type designed to compensate for the shortcomings of the constant bit type. have.

1 is a half cross-sectional view of a synchronous meshed synchronization device according to the prior art.

In the conventional synchronizer, the synchronizer hub 104 is splined on the main shaft 102, which is powered from the engine, so that the synchronizer hub 104 rotates integrally with the main shaft 102, and the outer peripheral gear portion of the synchronizer hub 104 is rotated. The sleeve 106 is engaged to be movable in the axial direction.

The speed gear 110 coupled to the clutch gear 108 to be selectively engaged with the sleeve 106 is disposed at both sides of the synchronizer hub 104, and a corner portion formed inside the clutch gear 108 may be formed. 112, a synchronizer ring 116 is arranged to perform a synchronous action.

The synchronizer ring 116 is provided with a friction portion 114 having a predetermined inclination angle on the inner circumferential surface for friction action with the corner portion 112 of the clutch gear.

In addition, a synchronizer key 118 is disposed on the outer circumferential surface of the clutch hub 104 at equal intervals in the circumferential direction, and the synchronizer key 118 is caused by the elastic force of the two synchronizer springs 120 held on the inner side thereof. When the sleeve 106 is moved to the left or the right, the friction part 114 of the synchronizer ring is in close contact with the corner part 112 of the clutch gear, and the speed gear 110 transmits rotational force. Receiving begins, and the synchronizer ring 116 and the clutch gear 108 are synchronized with power in the continuous operation of the sleeve 106.

However, the synchronous device according to the prior art made as described above is composed of a plurality of parts, the structure is complicated, thereby increasing the number of parts, manufacturing cost increases, there is a problem that the assembly work is difficult.

In addition, since the synchronizing action is generated by gear engagement of the sleeve, there is a problem in that the gear shifting feeling due to gear engagement is lowered and durability is inferior.

The present invention has been made to solve the above problems, the object of the present invention is to achieve a synchronous action by the action of the motor, the structure can be simplified, the number of parts can be significantly reduced, the assembly process It is to provide a synchronization device for a manual transmission that can significantly reduce the number and reduce the cost.

Another object of the present invention is to provide a synchronous device for a manual transmission, in which a synchronous action is performed by a button operation, so that the operation is convenient and shift is possible regardless of the synchronous capacity.

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

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

3 is a block diagram of a shift button according to the present invention,

4 is a block diagram of a synchronizer control means according to the invention,

5 is an operational state diagram of a synchronization device according to the present invention.

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

2: spindle 4: clutch hub

6: sleeve 8,10: speed gear

16: clutch gear 18: clutch gear

24: permanent magnet 26: coil

30: shift button

Synchronizing apparatus for a manual transmission according to the present invention for realizing the above object is a clutch hub which is splined on the main shaft driven by the power transmitted from the engine is rotated integrally with the main shaft, and the outer peripheral gear portion of the clutch hub If the sleeve is engaged in a screw manner so as to be movable in the axial direction, the speed gear is formed on both sides of the sleeve and the clutch gear is meshed with the sleeve is formed, and the power supply is provided at regular intervals on the outer peripheral surface of the sleeve It comprises a drive means for moving the sleeve in the axial direction, and a control means for controlling the current supplied to the drive means.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

2 is a cross-sectional view of a synchronous device for a manual transmission according to the present invention.

Such a synchronous device is a clutch hub 4 which is splined onto a main shaft 2 driven by transmission of power from an engine and rotates integrally with the main shaft 2, and an outer circumferential gear portion of the clutch hub 4. A sleeve 6 which is engaged in a screw manner so as to be movable in a direction, speed gears 8 and 10 which are disposed on both sides of the sleeve 6 to transmit power by the movement of the sleeve 6, and the sleeve It is provided on the outer circumferential surface of 6) and includes a driving means for moving the sleeve 6 in the axial direction when the power is supplied, and a control means for controlling the drive means.

The speed gears 8 and 10 support the speed gears 8 and 10 so as to be idling through an needle bearing 12 between the inner circumferential surface and the outer circumferential surface of the main shaft 2.

The sleeve 6 is screwed on the inner circumferential surface thereof and is engaged with the outer circumferential surface of the clutch hub 4, and the driving means for linearly moving the sleeve 6 in the axial direction is provided on the outer circumferential surface.

The speed gears 8 and 10 are formed with clutch gears 16 and 18 on opposite surfaces, respectively. The clutch gears 16 and 18 are formed on the outer circumferential surface by a screw having a spiral shape to be engaged with the inner circumferential surface of the sleeve 6.

The driving means is a means for selectively gearing one of the clutch gears 16 and 18 by forward or reverse rotation of the sleeve 6, and a permanent magnet 24 mounted on an outer circumferential surface of the sleeve 6. ) And a coil 26 installed outside the sleeve 6 so as to be spaced apart at regular intervals in the radial direction of the permanent magnet 24 and the sleeve 6 to supply power. Here, the coil 26 is installed in a separate retainer as shown in Fig. 2. Such a driving means is similar to a motor known for the main pipe, and when the current flows in the coil 26, the coil 26 And an electromagnetic interaction force is generated between the permanent magnet 24 and the permanent magnet 24 so that the sleeve 6 rotates together with the permanent magnet 24 and the permanent magnet in accordance with the flow direction of the current supplied to the coil 26. Together with (6) the sleeve (6) is rotated in the forward / reverse direction.

That is, when power is supplied to the coil 26 by the control means to rotate the sleeve 6 in the forward direction, and the sleeve 6 on which the permanent magnet 24 is mounted is rotated forward, the sleeve 6 is the clutch hub. Since the sleeve 6 is rotated at a greater rotational speed than the rotational speed of (4), the sleeve 6 is shifted to the left in the clutch hub 4 as shown in the drawing, and the gear gear 16 meshes with the clutch gear 16 located on the left side.

In addition, when a power supply for rotating the sleeve 6 in the reverse direction is applied to the coil 26 by the control means, a brake action is generated in the sleeve 6 and the sleeve is operated at a lower rotation speed than the rotation speed of the clutch hub 4. As the 6 is rotated, the sleeve 6 is thus moved in the right direction so that the gear engages with the clutch gear 18 located on the right side.

As shown in FIGS. 3 and 4, the control means includes a shift button 30 of a push type operated by a driver for shifting, and a driving means 34 when an electric signal is applied by an operation of the shift button 30. It consists of an ECU (electronic control unit) 32 for adjusting the current direction and the amount of current supplied to.

The operation of the synchronization device according to the present invention thus made will be described below.

When the driver presses the selected shift stage of the shift button 30 to perform the shift, the electric signal is applied to the ECU 32, and the electric signal of the ECU 32 is transmitted to the driving means 34 to transmit the coil 26. ) Is applied.

At this time, when the forward current is supplied to the coil 26, the sleeve 6 is rotated in the forward direction. At this time, since the rotation speed of the sleeve 6 rotates more than a certain degree compared to the rotation speed of the clutch hub 4, the sleeve 6 is rotated at a large rotational speed on the outer circumferential surface of the clutch hub 4 coupled by a screw method. The gear is engaged with the clutch 16 located on the left side is moved to the left side.

Then, the driving force of the main shaft 2 is transmitted to the speed gear 8 because the clutch hub 4 is meshed with the clutch gear 16 and the clutch hub 4 located on the left side by the sleeve 6.

On the contrary, when the reverse current is supplied to the coil 26, the reverse rotational force is generated in the sleeve 6, thereby causing the sleeve 6 to brake and rotating at a lower rotational speed than the rotational speed of the clutch hub 4. As shown in the figure is moved to the right gear meshes with the clutch gear 18 located on the right.

Therefore, the synchronous device for a manual transmission according to the present invention constructed and operated as described above can simplify its structure because the synchronous action is made while the sleeve is moved in the axial direction when a current is supplied by the motor driving method, and the component is simplified. Since the number can be greatly reduced and the synchronous operation is made surely, the shift performance can be improved and the durability can be increased.

And, since it is operated by the shift button method, there is an advantage that can increase the operation convenience.

Claims (5)

A clutch hub which is splined onto a main shaft driven by driving power from the engine and rotates integrally with the main shaft; A sleeve engaged with the screw in such a manner as to be movable in an axial direction on an outer circumferential surface of the clutch hub; Speed gears disposed on both sides of the sleeve to form a clutch gear meshing with the sleeve; Drive means installed at a predetermined interval on an outer circumferential surface of the sleeve to move the sleeve in an axial direction when power is supplied; And a control means for controlling the current supplied to the drive means. The method of claim 1, The sleeve is a synchronous device for a manual transmission, characterized in that the screw is formed on the inner circumferential surface of the sleeve is engaged in the form of a screw on the outer circumferential surface of the clutch hub. The method of claim 1, And said clutch gear is formed on opposite surfaces of both speed gears, and a screw type spiral is formed on an outer circumferential surface thereof so as to be engaged with said sleeve. The method of claim 1, And the driving means comprises a permanent magnet mounted on an outer circumferential surface of the sleeve, and a coil which is installed at an outer side of the sleeve so as to be spaced apart from the permanent magnet by a predetermined interval and is supplied with power. The method of claim 1, The control means comprises a shift button of the push method that the driver operates for the shift, and the ECU for adjusting the current direction and the amount of current supplied to the drive means when an electric signal is applied by the operation of the shift button. Synchronizer for Transmission.