JPH0610223Y2 - Synchronous meshing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a synchronous meshing device for a transmission.

<Prior Art> As a synchronous meshing device for a transmission, a BorgWarner-type device for generating friction torque in a cone clutch due to a difference in peripheral speed and synchronizing by using the friction torque is often used.

This cone clutch has an inner cone bush that rotates integrally with the synchro hub fixed to the main shaft, a concave groove on the outer circumference of the inner cone bush, and a key with a width smaller than the width of the concave groove so that the required rotation angle is relatively small. Outer circumference of the inner cone having an inner cone that allows rotation and engages in the direction of rotation, and has a tapered surface on the outer circumference and a tapered surface that faces the tapered surface of the inner cone with a gap on the inner circumference. A rotatably provided synchro ring, a clutch gear that rotates integrally with an input gear that is rotatably supported by the main shaft via a bearing, and the inner cone and synchro ring that engage with the clutch gear in a rotational direction. And a double cone that is in contact with both tapered surfaces and is in contact with both tapered surfaces. Scan synchromesh device increased torque capacity is, for example, be provided in real Publication No. 45-15365.

<Problems to be solved by the invention> In such a synchronous meshing device, the lubricating oil of each gear scoops up the oil accumulated at the bottom of the transmission case by the rotation of the counter shaft gear, Although scattered on the tooth surface of each gear, the inner cone bush acts as a barrier to the bearing of the input gear, which is rotatably supported by the main shaft via a bearing, and scatters as the gear rotates. It is difficult for oil to penetrate.

Since this input gear meshes with the counter shaft gear and constantly rotates on the main shaft, the bearing needs to be supplied with sufficient lubricating oil.

<Means for Solving Problems> The present invention has been made in view of the above-mentioned conventional problems.
Its characteristic structure is that the inner cone bush that rotates integrally with the synchro hub fixed to the main shaft, the groove on the outer periphery of this inner cone bush, and the key with a width smaller than the width of the groove make the required rotation angle Of the inner cone having an inner cone having a taper surface on the outer periphery and engaging the rotational direction while allowing relative rotation, and a taper surface facing the taper surface of the inner cone with a gap on the inner circumference. A synchro ring that is rotatably provided on the outer periphery, a clutch gear that rotates integrally with an input gear that is rotatably supported by the main shaft via bearings, and a clutch gear that engages with the clutch gear in the rotational direction to synchronize with the inner cone. In a synchronous meshing device including a double cone that is interposed in a gap between a tapered surface and a ring and is in contact with both tapered surfaces, the input gear of the inner cone bush is provided. The flange as a stopper of the In'nakon the end face side is provided, in which the oil groove communicating with the bearing of the input gear to the flange provided in the radial direction.

<Operation> With the above configuration, the oil that is scooped up by the rotation of the counter shaft gear and scattered is generated by the oil groove provided in the radial direction on the flange provided on the end face of the inner cone bush on the input gear side, and the bearing of the input gear To ensure sufficient lubrication oil supply.

<Embodiment> An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, 7 is a main shaft of a transmission, and an input gear 8 is rotatably supported by a bearing 9. This input gear 8
A clutch gear 11 is integrally rotatably provided in the.

Reference numeral 5 denotes a synchro hub, which is fitted to the main shaft 7 via a spline and rotates integrally with the main shaft 7. A synchro sleeve 6 is fitted on the outer periphery of the synchro hub 5 so as to be slidable in the axial direction, and a shift fork (not shown) is engaged with an annular groove on the outer periphery of the synchro sleeve 6.

An inner cone bush 1 is provided between the input gear 8 and the synchronizing hub 5. The inner cone bush 1 is spline-fitted to the main shaft 7 and rotates integrally with the synchro hub 5.

An inner cone 2 is fitted around the inner cone bush 1 so as to allow relative rotation at a required rotation angle and engage in the rotation direction. As shown in FIG. 2, the structure that allows the relative rotation of the required rotation angle and engages in the rotation direction is provided with a groove 13 having a wide width in the circumferential direction on the inner circumference of the inner cone 2 in the axial direction, A key 14 having a width smaller than the width of the groove 13 is fixed to the outer periphery of the inner cone bush 1 in the axial direction, and the key 14 is located in the groove 13.

A taper surface 2a is formed on the outer circumference of the inner cone 2, and the inner cone 2 is formed on the outer circumference of the inner cone 2.
A synchro ring 10 is rotatably provided with a tapered surface 10a which is formed on the inner circumference and faces the tapered surface 2a with a gap.

A clutch gear 11 that rotates integrally with the input gear 8 engages in the direction of rotation with the inner cone 2 and a synchronizing ring.
The double cone 12 is provided in the gap between the taper surfaces 2a and 10a with respect to 10 and contacts both taper surfaces.

According to the present invention, in the synchronous meshing device having the above-described structure, as shown in FIGS. 3 and 4, the inner cone 2 is attached to the end face of the inner cone bush 1 on the input gear 8 side.
A flange 15 is provided as a stopper for the
Further, an oil groove 16 communicating with the bearing 9 of the input gear 8 is provided in the radial direction.

The flange 15 provided on the inner cone 2 is shifted to the right of the synchronizing sleeve 6 in FIG. 1 so that the synchronizing ring 10 is moved to the right, and the tapered surface of the synchronizing ring 10 is moved.
10a and the double cone 12 are pressed against each other to move the double cone 12 to the right, and the double cone 12 is pressed against the tapered surface 2a of the inner cone 2 to move the inner cone 2 to the right. This is a stopper for restricting the rightward movement of the Nakorn 2.

Since the present invention has the above-described structure, as described above, the synchronizing sleeve 6 is shifted to the right in FIG.
The inner cone 2 and the inner cone bush 1 rotate relative to each other when they are separated from each other to facilitate meshing.

Therefore, in the present invention, the oil in the transmission case that is scraped up by the rotation of the counter shaft gear is reliably guided to the bearing 9 of the input gear 8 through the oil groove 16 provided in the flange 15 of the inner cone 2. Therefore, sufficient lubricating oil is supplied to the bearing 9.

Further, the oil supplied to the bearing 9 is the oil groove provided in the input gear 8.
Discharge from 30 into the case <Effect of the invention> As described above, the present invention, in the double cone type synchronous meshing device, is provided with a flange as an inner cone stopper on the end face of the inner cone bush on the input gear side, The oil groove that communicates with the bearing of the input gear is provided in this flange in the radial direction, so that the oil in the transmission case, which is scraped up by the rotation of the countershaft gear, is guided to the bearing of the input gear where it is difficult to enter. As a result, sufficient lubricating oil can be supplied to the bearing. Further, since the inner cone bush is provided with the flange as the inner cone stopper, it is not necessary to separately assemble the inner cone stopper member, and the number of parts and the number of assembling steps can be reduced.

[Brief description of drawings]

FIG. 1 is a sectional view of the present invention, FIG. 2 is a vertical sectional view of a perspective portion of FIG. 1 II, FIG. 3 is a plan view of the perspective portion of FIG. 1 II, and FIG. Is. 1 ... Inner cone bush, 2 ... Inner cone, 5
…… Synchronous hub, 7 …… Spindle, 8 …… Input gear, 9 ・ ・ ・
… Bearing, 10 …… Synchronizing ring, 11 …… Clutch gear,
12 …… Double cone, 15 …… Flange, 16 …… Oil groove.

Claims (1)

[Scope of utility model registration request] 1. A relative rotation of a required rotation angle by an inner cone bush that rotates integrally with a synchronizing hub fixed to a main shaft, a groove on the outer periphery of the inner cone bush, and a key having a width smaller than the width of the groove. The inner cone having a tapered surface on the outer periphery, which engages in the rotation direction to allow the inner cone to have a tapered surface facing the tapered surface of the inner cone with a gap on the outer circumference of the inner cone. A synchro ring provided rotatably, a clutch gear that rotates integrally with an input gear that is rotatably supported by the main shaft via a bearing, and the inner cone and the synchro ring that engage the clutch gear in the rotational direction. In a synchronous meshing device including a double cone which is interposed in a gap between the tapered surfaces of the inner cone bush and contacts the both tapered surfaces, an end surface of the inner cone bush on the input gear side. Synchromesh device, characterized in that the flange of the stopper is provided for In'nakon, provided oil grooves communicating with the bearing of the input gear to the flange in the radial direction.