JPH05157127A - Synchronous engagement device - Google Patents

Abstract

PURPOSE:To precisely and easily set measurement of a shoulder clearance (clearance in the shaft direction) between both splines of a synchronizer ring and a gear piece in a Borg-Warner type synchromesh without changing component parts. CONSTITUTION:A gear cone 14 constituting a cone clutch of a synchronous engagement device 10 is assembled to a gear piece 15 free to integrally rotate by forming it as a separate body from the gear piece 15. Thereafter, a positioning member 16 to specify a shaft direction space is interposed between the gear cone 14 and the gear piece 15 positioned on the extreme inner peripheral side in each cone constituting the cone clutch. A shoulder clearance is adjusted by this positioning member 16.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a synchronous meshing device.

[0002]

2. Description of the Related Art As represented by a BorgWarner type synchronous meshing device as one type of a synchronous meshing device, a clutch hub in which either one is integrally rotatable and the other is rotatably mounted on a rotary shaft. The hub sleeve, which is disposed between the synchronized gear and the spline-fitted clutch hub, is frictionally engaged by sliding in the axial direction to form the hub sleeve and the gear piece integrally provided on the synchronized gear. There is a synchronous engagement device provided with a cone clutch that synchronizes these two with each other. In this type of synchronous meshing device, the cone clutch is composed of a synchronizer ring and a gear cone, and the gear cone is integrally formed with the synchronized gear. Also, the synchronizer ring is composed of one or more rings,
It consists of single cone clutch, double cone clutch, triple cone clutch, etc.

In this type of synchronous meshing device, if the axial clearance (shoulder clearance) between the spline of the gear piece and the spline of the synchronizer ring is different, the sliding stroke of the hub sleeve to the gear piece after synchronization is increased. It changes and makes the operation feeling of the shift operation different. In particular, when the shoulder clearance becomes large, the sliding stroke of the hub sleeve becomes long, and the feeling of entering two gears during a shift operation increases. Therefore, it is important to manage the shoulder clearance in this type of synchromesh device.

[0004]

However, the conventional synchronous meshing device does not have means for adjusting the shoulder clearance, and the manufacturing tolerance in the manufacturing process is reduced as much as possible, and sufficient dimensional inspection and management are performed. The current situation is that they are going. In addition, in multi-cone type synchromesh devices such as double cone and triple cone, the manufacturing tolerance of each component may accumulate due to an increase in the number of components of the cone clutch. At present, the main specifications are measured, categorized, and selective assembly is carried out at present, resulting in a great increase in man-hours and costs.

In the above-mentioned multi-cone type synchronous meshing device, a synchronous meshing device for coping with manufacturing tolerance due to an increase in the number of component parts of the cone clutch is a full open flat type 3-30625.
It is proposed in Japanese Patent Publication No. In the synchronous meshing device, a gear piece is formed in a middle cone that is integrally rotatably assembled to a synchronized gear in each cone clutch that constitutes the cone clutch, and the dimensional accuracy of the shoulder clearance is the middle ring and the cone clutch. It is controlled within the range of tolerance with the outer ring that constitutes the. However, in the synchronous meshing device, the same degree of control as that of the conventional single-cone type synchronous meshing device is required, and in adjusting, the above-mentioned outer ring, middle ring, and the like must be replaced. There is a defect. Therefore, an object of the present invention is to deal with each of the above problems by using a simple adjusting means.

[0006]

According to the present invention, there is provided a synchronous meshing device of the above-mentioned type, wherein a gear cone constituting the cone clutch is formed separately from the gear piece and integrally rotatably assembled to the gear piece, Among the cones forming the cone clutch, a positioning member that defines an axial gap is provided between the cone located on the innermost peripheral side and the gear piece.

[0007]

In the synchronous meshing device having such a structure, the innermost peripheral cone forming the cone clutch with respect to the gear piece is axially positioned by the positioning member to adjust the axial distance. , Since one or more other cones are arranged on the same cone, the shoulder clearance can be accurately set by appropriately selecting the positioning member.
Moreover, it can be easily set without requiring replacement of parts such as each cone.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a synchronous meshing device 10 according to a first embodiment of the present invention. The synchronous meshing device 10 is a single-cone type synchronous meshing device, and is arranged on one side of a driven gear 22 rotatably mounted on a rotary shaft 21, and as shown in FIGS. 1 and 2. Clutch hub 11, hub sleeve 12, synchronizer ring 1
3, a gear cone 14, a gear piece 15, and a shifting key and a key spring (not shown). The driven gear 22 described above corresponds to the synchronized gear in the present invention.

The clutch hub 11 is integrally assembled on the rotary shaft 21 at one side of the driven gear 22, and the hub sleeve 12 is assembled to the spline provided on the outer periphery of the clutch hub 11. Same hub sleeve 1
Reference numeral 2 is a spline 12a which meshes with a spline of the clutch hub 11 and is slidable in the axial direction. The shifting key (not shown) is located in the groove portion of the clutch hub 11 and is received by the key spring, so that the hub sleeve 12
Is elastically engaged with the engaging recess. The synchronizer ring 13 has a spline 13a on the outer circumference and a taper cone 13b on the inner circumference, and is arranged between the clutch hub 11 and the gear piece 15, and its engaging recess 1
The end of the shifting key faces 3c. As a result, the synchronizer ring 13 can rotate integrally with the clutch hub 11 and the hub sleeve 12 via the shifting key. Such a configuration is similar to that of the well-known BorgWarner type synchronous meshing device.

In the synchronous meshing device 10, the gear cone 14 and the gear piece 15 are formed separately.
The gear piece 15 is a ring-shaped one having a large number of splines 15a on the outer circumference, and is spline-fitted to the tubular portion of the driven gear 22 to be integrally assembled to the gear 22.
The gear cone 14 has a cylindrical shape having a taper cone 14a on the outer circumference, and three engagement protrusions 14b are provided on one end side of the cylindrical main body.
Are formed. The gear cone 14 is a driven gear 22.
Through-holes 16a which are fitted on the cylindrical portion of the shim 16 through shims 16 having a predetermined thickness, and the engaging protrusions 14b are provided on the shims 16.
It is engaged with each engagement hole 15b provided in the gear piece 15 through.

As a result, the gear cone 14 is located on the inner peripheral side of the synchronizer ring 13 and can rotate integrally with the gear piece 15. Further, the shim 16 corresponds to the positioning member of the present invention, and depending on the thickness of the shim 16, the spline 13a of the synchronizer ring 13 and the gear piece 1 are provided.
The axial clearance between the No. 5 and the spline 15a, that is, the shoulder clearance L is set to a predetermined value.

In the synchronous meshing device 10 having such a structure, when the hub sleeve 12 is slid in the axial direction by the operation of a shift lever (not shown), the shifting key moves integrally with the hub sleeve 12 in the same direction. The synchronizer ring 13 is pressed against the gear cone 14. As a result, the taper cones 13b and 14a of the synchronizer ring 13 and the gear cone 14 which face each other are frictionally engaged with each other, and the synchronization is started.

When the hub sleeve 12 slides further in the axial direction, the shifting key comes out of the recess of the hub sleeve 12, and the chamfer of the spline 12a of the hub sleeve 12 abuts on the chamfer of the spline 13a of the synchronizer ring 13 to synchronize the synchronizer. The ring 13 is strongly pressed against the gear cone 14, and both taper cones 13b and 14a are pressed.
Enhance the frictional engagement of to complete synchronization. Hub sleeve 1
2 is the spline 13 of the synchronizer ring 13 after that
Sliding between a and meshing with the spline 15a of the gear piece 15, the clutch hub 11 and the driven gear 22 are coupled to each other via the gear piece 15.

By the way, in the synchronous meshing device 10, since the gear cone 14 forming a cone clutch is axially positioned with respect to the gear piece 15 via the shim 16 to adjust the axial distance, the gear cone 14 is adjusted. The synchronizer ring 13 arranged above is a shim 16
The shoulder clearance L can be set accurately and easily by appropriately selecting. In addition, for adjusting the shoulder clearance L, the synchronizer ring 13,
It is not necessary to replace the gear cone 14 or the like.

FIG. 3 shows a synchromesh device 30 according to a second embodiment of the present invention. The synchronous meshing device 30 is a double cone type synchronous meshing device, and as shown in FIGS. 3 and 4, a clutch hub 31, a hub sleeve 32, an outer ring 33 and an inner ring 34, a gear cone 36, and a gear piece 36 that constitute a synchronizer ring. , A shim 37, and a shifting key and a key spring (not shown). The synchronizer device 30 is a double cone type, so that the synchronizer ring is composed of two rings 33 and 34 of an outer and an inner, and the connection relationship between these and the synchronizing capacity and the like. Synchronous meshing device 10 of the first embodiment
, But is otherwise basically the same.

The outer ring 33, which constitutes the synchronizer ring, has a spline 33a on the outer circumference and a tapered cone 33b on the inner circumference, and is arranged between the clutch hub 31 and the gear piece 36, and its engaging recess 3
The end of the shifting key faces 3c. Thereby, the synchronizer ring 33 can rotate integrally with the clutch hub 31 and the hub sleeve 32 via the shifting key. Such a configuration is similar to that of the well-known BorgWarner type synchronous meshing device. The inner ring 34 has a cylindrical shape having a taper cone 34a on the outer circumference, three engaging projections 34b are formed on one end side, and the engaging projections 34b are fitted on the cylindrical portion of the clutch hub 31. It is engaged with the engagement recess 33d of the outer ring 33. As a result, the inner ring 34 can rotate integrally with the outer ring 33.

In the synchronous meshing device 30, the gear cone 35 and the gear piece 36 are formed separately.
The gear piece 36 is a ring-shaped member having a large number of splines 36 a on the outer circumference, and is spline-fitted to the tubular portion of the driven gear 22 and integrally assembled with the gear 22.
A shim 67 is provided between the gear piece 36 and the inner ring 34.
Is installed. The gear cone 35 is a tubular one having tapered cones 35a and 35b on the inner and outer circumferences, and three engaging projections 35c are formed on the other end side of the tubular main body. The gear cone 35 is arranged between the outer ring 33 and the inner ring 34, and the respective engagement protrusions 35 c are arranged on the gear piece 3.
6 are engaged with the respective engagement holes 36b provided in 6. Shim 37
Corresponds to the positioning member of the present invention.
The axial clearance between the spline 33a of the outer ring 33 and the spline 36a of the gear piece 36, that is, the shoulder clearance L is set to a predetermined value by the thickness of the.

FIG. 5 shows a synchronous meshing device 40 according to the third embodiment of the present invention. The synchronous meshing device 40 is a triple cone type synchronous meshing device, and as shown in FIGS. 5 and 6, a clutch hub 41, a hub sleeve 42, an outer ring 43, a middle ring 44 and an inner ring 45 which form a synchronizer ring, a gear cone. 46,
The gear piece 47 and the shim 48 are provided, and a shifting key and a key spring (not shown) are provided. The synchronizer device 40 is a triple cone type, so that the synchronizer ring is
Although it is different from the synchronous meshing devices 10 and 30 of the first and second embodiments in that it is composed of the three rings 43, 44 and 45 of the middle and the inner, and the connection relationship between them and the synchronous capacity, etc. , And other points are basically the same.

The outer ring 43, which constitutes the synchronizer ring, has a spline 43a on the outer circumference and a tapered cone 43b on the inner circumference, and is arranged between the clutch hub 41 and the gear piece 47, and its engaging recess 4 is formed.
The end of the shifting key faces 3c. As a result, the outer ring 43 can rotate integrally with the clutch hub 41 and the hub sleeve 42 via the shifting key. Such a configuration is similar to that of the well-known BorgWarner type synchronous meshing device.

The middle ring 44 has a cylindrical shape having tapered cones 44a and 44b on the inner and outer circumferences, and three engaging projections 44c are formed on the other end side of the cylindrical main body. The middle ring 44 is arranged on the inner peripheral side of the outer ring 43, and the engagement protrusions 44 c thereof are engaged with the engagement holes 47 b provided in the gear piece 47. The inner ring 45 is a tubular one having tapered cones 45a and 45b on the inner and outer circumferences, and three engaging protrusions 45c are formed on one end side,
The engaging protrusions 45c are arranged on the inner peripheral side of the middle ring 44 and engage with the engaging recesses 43d of the outer ring 43. As a result, the inner ring 45 can rotate integrally with the outer ring 43.

In the synchronous meshing device 40, the gear cone 46 and the gear piece 47 are formed separately, and the gear piece 47 is formed integrally with the driven gear 22. The gear piece 47 has a large number of splines 47a on the outer circumference and is located on the other side of the driven gear 22. The gear cone 46 has a taper cone 46 on the outer circumference.
It has a cylindrical shape having a, and has three engaging projections 46b formed on the other end side of the cylindrical main body. The gear cone 46 is provided on the inner peripheral side of the inner ring 45, and the engagement protrusions 46 b thereof are provided on the gear piece 47 through the through holes 48 a provided on the shim 48 interposed between the gear cone 46 and the inner ring 45. The engaging holes 47c are engaged with each other. The shim 48 corresponds to the positioning member of the present invention, and the thickness of the shim 48 sets the axial distance between the spline 43a of the outer ring 43 and the spline 47a of the gear piece 47, that is, the shoulder clearance L to a predetermined value. It

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view of a synchromesh device according to a first embodiment of the present invention.

FIG. 2 is an exploded perspective view of constituent members of a cone clutch in the device.

FIG. 3 is a partial sectional view of a synchromesh device according to a second embodiment of the present invention.

FIG. 4 is an exploded perspective view of constituent members of a cone clutch in the device.

FIG. 5 is a partial cross-sectional view of a synchromesh device according to a third embodiment of the present invention.

FIG. 6 is an exploded perspective view of constituent members of a cone clutch in the device.

[Explanation of symbols]

10, 30, 40 ... Synchronous meshing device, 11, 31, 41 ...
Clutch hub, 12, 32, 42 ... Hub sleeve, 13
… Synchronizer ring, 33, 43… Outer ring,
34, 45 ... Inner ring, 14, 35, 46 ... Gear cone, 15, 36, 47 ... Gear piece, 16, 37, 4
8 ... Shim (positioning member).

Claims (1)

[Claims] 1. A hub, which is disposed between a synchronized hub and a clutch hub, one of which is integrally rotatable on the rotating shaft and the other of which is rotatable, and which is spline-fitted to the clutch hub. A synchronous meshing device comprising a cone clutch for frictionally engaging by sliding the sleeve in the axial direction to synchronize the hub sleeve and a gear piece integrally provided on the synchronized gear with each other to mesh with each other, A gear cone forming a cone clutch is formed separately from the gear piece and is rotatably assembled to the gear piece, and between the cone located on the innermost peripheral side among the cones forming the cone clutch and the gear piece. A synchronous meshing device characterized in that a positioning member that regulates an axial interval is interposed in the shaft.