JP2001173742A - Power transmission device and its assembling method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply, rapidly and efficiently mount a device for transmitting driving force of an engine to tires while appropriately changing speed by arranging a continuously variable speed pulley device and decelerating gear device between a crankshaft of the engine and a tire hub, in a motorcycle, etc. SOLUTION: This device is composed of a power side variable speed pulley B which is constituted by a fixing pulley half body 6, a movable pulley half body 5, a lamp plate 7, and a weight roller 8, and which is pivotally supported by fastening of a fixing tool 24 to a crankshaft 22 wherein a tapped part 22a is formed on a shaft end; a driven variable speed pulley C; a connecting body A having a housing guide part 2 composed of an enclosing wall surface part 2a for supporting the movable pulley half body 5 in an enclosing state and a penetrating hole 2b in which the crankshaft 22 is penetrated; and a cover body E for composing a housing by the connecting body A. The power side variable speed pulley B around which a belt 20 is wrapped and the driven variable speed pulley C are mounted on the housing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motorcycle and the like, in which a continuously variable pulley device and a reduction gear device are provided between an engine and a tire to transmit the driving force of the engine to the tire at an appropriately variable speed. The present invention relates to a power transmission device capable of easily, quickly and efficiently mounting a device, and a method of assembling the same.

[0002]

2. Description of the Related Art Conventionally, in a motorcycle or the like, a continuously variable pulley device and a reduction gear device are provided between an engine and a tire to transmit the driving force of the engine to the tire at an appropriately variable speed. There is. And the engine,
The continuously variable pulley device and the reduction gear device are each configured as a unit (module).

[0003]

However, FIG.
As shown in the figure, the engine-side crankshaft [output shaft (a)], the continuously variable speed pulley device [drive pulley (b), driven pulley (c), belt (d)], reduction gear device (e)
Even if the components such as the housing body (f) and the housing cover (g) are modularized as respective devices, it is difficult to assemble the motorcycle body with the modularization of the device. Since it is necessary to assemble the components of the other device to the connecting components provided in one device, it is difficult to improve the assemblability, and it is not possible to improve the productivity and reduce the manufacturing cost. Was.

Specifically, in the case of a continuously variable transmission pulley device connected to a crankshaft of an engine, after the components of the variable speed pulley device are assembled to the crankshaft, modularization of the continuously variable transmission pulley device is performed. The component covers must be installed. That is, the continuously variable pulley device that is modularized is not assembled as it is modularized in assembling with the engine. The module called a pulley device was completed.

[0005]

The inventors of the present invention have made intensive studies to solve the above-mentioned problems, and as a result, have found that the present invention provides a fixed pulley half, a movable pulley half, and a movable pulley half. A power-side speed-change pulley, which is constituted by a ramp plate and a weight roller for bringing the body close to the fixed pulley half side, and which is supported by tightening a fastener on a crankshaft having a threaded portion formed at the shaft end; A driven-side speed-change pulley to which power is transmitted via a power-side speed-change pulley and a belt; an enclosing wall portion that allows the movable pulley half to be freely inserted into an inner surface thereof and that supports the movable pulley half in an encircling manner; A coupling body having a storage guide portion which is located at a substantially central portion of the surrounding wall surface portion and includes a through hole through which the crankshaft penetrates from the outer surface side to the inner surface side, and covers the inner surface side of the coupling body. Stepless change with connected body A power transmission device comprising a cover body constituting a housing of the pulley device, wherein a power-side transmission pulley and a driven-side transmission pulley wound around a belt with the housing are mounted, and a method of assembling the power transmission device. Accordingly, a power transmission device which can be easily assembled with the power transmission device of the continuously variable transmission pulley device and the reduction gear device provided between the engine and the tire in the form of a structural unit (module) is provided. To improve productivity and reduce production costs.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. First, the configuration of the device according to the present invention mainly includes a coupling body A, a power-side transmission pulley B, a cover body E, a driven-side transmission pulley C, and the like. A continuously variable transmission pulley device and a reduction gear device are mounted on the connecting body A, and the crankshaft 22 and the tire hub 25 provided at the engine mounting portion of the motorcycle are provided as a module configured by assembling these members. Is installed between
The cover body E serves to cover (cover) the opening of the connecting body A. Then, the housing is constituted by the connecting body A and the cover body E (see FIG. 1).

The continuously variable transmission pulley device is mainly composed of a power-side transmission pulley B, a driven-side transmission pulley C, and a belt 20 wound around the two transmission pulleys (see FIGS. 1, 3 and the like). ). An axle directly connected to the tire hub 25 is mounted on the reduction gear device F, and the reduction gear device F is connected to the driven-side transmission pulley C to transmit a rotational force to the tire of the motorcycle.

[0008] The coupling body A and the continuously variable pulley device,
Alternatively, a power transmission device is formed by attaching a cover body E to the coupling body A or adding a reduction gear device F to the continuously variable transmission pulley device, which will be described later, as one constituent unit. As described above, the power transmission device is mounted on the motorcycle (see FIG. 1).

Next, the power-side transmission pulley B is mounted on the crankshaft 22. A screw portion 22a is formed at the shaft end of the crankshaft 22 (see FIG. 4). The fixing tool 24 has a nut shape,
The below-mentioned fixed pulley half 6 is pressed to pivotally fix the power-side speed-change pulley B to the crankshaft 22 (see FIGS. 2, 4 and the like).

The connecting body A is provided with a housing guide portion 2 for mounting the power-side transmission pulley B on the case body 1 (see FIGS. 2 and 4). The storage guide 2 is composed of a surrounding wall 2a and a through hole 2b (FIG. 5).
reference). The surrounding wall surface portion 2a is formed on a substantially circular inner wall surface, and accommodates the cylindrical outer peripheral portion 5d of the movable pulley half 5 in the power-side transmission pulley B, and is supported at a predetermined position by the coupling body A. [FIG. 2, FIG. 4, FIG. 13 (A)
Etc.].

The storage guide portion 2 has a through hole 2b formed at the center of the diameter thereof for mounting the connecting body A to the crankshaft 22 of the motorcycle. The through hole 2b allows the crankshaft 22 to pass through the through hole 2b. The power transmission pulley B is supported by the crankshaft 22. The movable pulley half 5 of the power-side transmission pulley B can be supported at a predetermined position in the coupling body A by the storage guide portion 2 (see FIG. 4).

As a specific shape of the storage guide portion 2, an enclosing wall surface portion 2a that encloses a cylindrical outer peripheral portion 5d (described later) formed on the movable pulley half 5 (described later) is formed (see FIG. 2). 4 and 5). The surrounding wall portion 2a may be a continuously formed circumferential wall surface, or may be formed by intermittently forming arc-shaped wall surfaces at appropriate intervals. Further, a reinforcing rib formed on the inner surface side 1a of the connector A may be formed so as to also serve as the surrounding wall portion 2a.

The coupling body A is provided with a housing guide 2 for mounting the power-side transmission pulley B on the case main body 1. The storage guide portion 2 includes a power-side transmission pulley B
And the cylindrical outer peripheral portion of the movable pulley half of the power transmission pulley B
Of the movable pulley half 5 can be supported at a predetermined position in the connecting body A.

The power transmission pulley B in the power transmission device is mainly composed of a movable pulley half 5, a fixed pulley half 6,
It comprises a lamp plate 7 and a weight roller 8 (see FIG. 5). The movable pulley half 5 and the fixed pulley half 6 face each other to form a set of pulleys. The movable pulley half 5 has a substantially flat conical belt contact plate 5a.
And the boss 5b. Similarly, the fixed pulley half 6 has a substantially flat conical belt contact plate 6a.
And the boss 6b.

The belt contact plate 5a and the belt contact plate 6a
And each have a belt 20 abutting against the belt contact inclined surfaces 5a ₁ and the belt contact inclined surfaces 6a _1, and both the belt contact inclined surfaces 5a ₁ belt and contact inclined surfaces 6a ₁ is opposed, Both surfaces have the same inclination. The boss portion 6b of the fixed pulley half 6, the rear-side boss portion 6b ₂ which protrudes from the back side of the belt contact plate 6a is formed. The said back side boss portion 6b _2, the clutch engaging portion 6c
Are formed, and can be engaged with a clutch mechanism of a starter portion D described later (FIGS. 2 and 3).
reference).

[0016] The belt and contact inclined surfaces 5a ₁ belt and contact inclined surfaces 6a ₁ constitute a cross section V-shape by opposing the belt contact plate 5a and the belt contact plate 6a and the cross section The V-shaped belt 20 is wound around while being pinched. The movable pulley half 5 moves in the axial direction, and the fixed pulley half 6 and the movable pulley half 5 move.
DOO the distance between the belt contact inclined surfaces 5a ₁ and the belt contact inclined surfaces 6a ₁ by or spaced or close is variable structure.

There are a plurality of types of the power-side transmission pulley B depending on the shape, structure, and the like of the movable pulley half 5 and the fixed pulley half 6. A first type, in the boss portion 6b of the fixed pulley half 6, the surface-side boss portion 6b ₁ projecting from the belt contact inclined surfaces 6a ₁ side. Surface-side boss portion 6b ₁ is inserted into the through hole of the boss portion 5b of the movable pulley half 5, the movable pulley half 5
Becomes slidable in the axial direction of the boss portion 6b ₁ on the front side,
The movable pulley half 5 is freely movable toward and away from the fixed pulley half 6 (see FIG. 6B).

[0018] The sliding member 10 slides is facilitated on the inner peripheral surface of the boss portion 5b of the movable pulley half 5 is mounted, the movable pulley half of the surface-side boss portion 6b ₁ of the stationary pulley half 6 5 can be made to have good slidability. The sliding member 10 is formed of a synthetic resin or a metal, and a member having good slidability is selected.

Furthermore, ramp plate 7 is secured in the manner and in the axial end surface side boss portion 6b ₁ of the stationary pulley half 6 positioned on the rear side of the movable pulley half 5. In the center of the ramp plate 7 through hole 7a is formed, the small diameter end portion 6d which is formed by the step at the shaft end portion of the surface side boss portion 6b ₁ is formed, the ramp plate 7 in the small diameter end portion 6d The lamp plate 7 is attached via a lock member 30 such as a ring-shaped nut.

A plurality of inclined plate pieces 7b, 7b,... Are formed in the lamp plate 7 in a substantially radial manner around the center portion where the through hole 7a is formed as described above.
A weight roller 8 is arranged between the movable pulley half 5 and the back side of the belt contact plate 5a of the movable pulley half 5 [FIGS.
See FIG. 13B).

The lamp plate 7 has a locking portion 7c formed to rotate together with the movable pulley half 5, and a rib 5c formed on the back side of the movable pulley half 5.
And is movably locked only along the axial direction. Thus, the movable pulley half 5 and the ramp plate 7 are configured to rotate together. The weight rollers 8, 8,... Are arranged in a non-fixed state between the rear surface side of the movable pulley half 5 and the respective inclined plate pieces 7b, 7b,.

The fixed pulley half 6 and the movable pulley half 5
As the rotation speed increases, the weight roller 8
Move along the outer diameter direction due to the centrifugal force, whereby the weight roller 8 moves the movable pulley half 5 along the axial direction and presses the movable pulley half 5 against the fixed pulley half 6 [ FIG. 13 (C)].

When the rotational speeds of the movable pulley half 5 and the fixed pulley half 6 begin to decrease, the centrifugal force also decreases, and the weight roller 8 is connected to the boss portion 5b of the movable pulley half 5.
Side. Then, by changing the distance between the fixed pulley half 6 and the movable pulley half 5, the size of the diameter with which the belt 20 wound around engages can be changed.

Thus, the belt contact plate 5a of the movable pulley half 5 and the belt contact plate 6 of the fixed pulley half 6
When the distance between the movable pulley half and the fixed pulley half 6 changes, the supporting diameter of the belt 20 wound around the movable pulley half 5 and the fixed pulley half 6 changes, so that the gear can be shifted.

The movable pulley half 5 is formed with a circumferential cylindrical outer peripheral portion 5d from the periphery of the belt contact plate 5a along the back side of the belt contact plate 5a. , FIG. 4, FIG. 13 (B), etc.]. The cylindrical outer peripheral portion 5d has a flat cylindrical shape, and is structured to be stored in the surrounding wall portion 2a of the storage guide portion 2. The cylindrical outer peripheral portion 5d may be formed to have the same outer diameter as the outer diameter of the belt contact plate 5a, or may be formed slightly smaller than the outer diameter of the belt contact plate 5a. It may be formed slightly larger than the outer diameter of the belt contact plate 5a.

The outer diameter of the cylindrical outer peripheral part 5d is smaller than the inner diameter of the surrounding wall part 2a of the storage guide part 2. Is preferably small. That is, the movable pulley half 5 is connected to the crankshaft 22 in the surrounding wall 2a.
To minimize the falling width of the movable pulley half 5 in the storage guide portion 2 which is not mounted and is not supported. Specifically, the gap is desirably about 2 mm, but is not limited to this, and it goes without saying that an optimal gap can be appropriately set.

Next, as the second type of power-side variable speed pulley B, and those surface-side boss portion 6b ₁ of the boss portion 6b of the fixed pulley half 6 is not formed, of the surface-side boss portion 6b ₁ Instead, a sleeve member 9 which is a separate member from the fixed pulley half 6 is used (see FIGS. 2, 4 and 5).

A fixed pulley half 6 is fixed to one end of the sleeve member 9 in the axial direction by press-fitting means or the like, and the sleeve member 9 is inserted into the boss 5b of the movable pulley half 5, and the movable pulley half 5 is The structure is such that the sleeve member 9 is slidable along the axial direction. As described above, the sliding member 10 is mounted between the boss portion 5b of the movable pulley half 5 and the sleeve member 9 to improve the slidability of the movable pulley half 5. The ramp plate 7 is fixedly located at the axial end of the sleeve member 9 and on the back side of the belt contact plate 5 a of the movable pulley half 5. As described above, the lamp plate 7 is fixed via the lock member 30 such as a ring-shaped nut or fixed by welding means.

Next, as the third type of the power-side transmission pulley B, the ramp plate 7 is not fixed to the boss portion 6b of the sleeve member 9 or the fixed pulley half 6, and is formed on the crankshaft 22. And the step
This is a structure sandwiched between the sleeve member 9 and the boss 6b (see FIGS. 2 and 7).

A starter D is attached to the cover E (see FIG. 3). In the starter section D, a starting gear 14 is mounted on a starting shaft 13, and a starting gear 15 a and clutch teeth 15 b are formed on the clutch 15. Then, the clutch 15 is attached to the cover body E.
The clutch 15 has a starter spring 16 mounted thereon (FIGS. 2 to 4).
reference).

Normally, the clutch teeth 15b of the clutch 15 and the clutch engaging portion 6 on the fixed pulley half 6 side are used.
c is in a separated state, and the starting gear 14 rotates together with the starting shaft 13 that rotates through the starter pedal. Next, the clutch 15 rotates via the starting gear 14.

When the clutch 15 rotates, the starter spring 16 operates to engage the clutch engaging portion 6c of the fixed pulley half 6 with the clutch teeth 15b, and rotate from the fixed pulley half 6 to the crankshaft 22. To start the engine.

Next, in the power pulleys B of the first to third types, the fixed pulley half 6 is provided with a cover body E.
It is rotatably supported and fixed in the housing via the loosely inserted support portion 4 formed on the side (see FIGS. 1, 2, and 6). Specifically, it is intended to accommodate the loose insertion supporting portion 4 has a cylindrical shape, the rear-side boss portion 6b ₂ of the stationary pulley half 6 with a loosely. The inserted and supported portion 4 is also used by the clutch 15.

That is, the inside of the clutch teeth 15 b of the clutch 15 is an insertion hole, which is used as the loosely inserted support portion 4. The fixed pulley half 6 of the power-side transmission pulley B is pivotally supported by the loosely inserted support portion 4, and the movable pulley half 5 is supported by the surrounding wall portion 2 a of the storage guide portion 2. 7 and 8
(A), has been shown (B), the rear-side boss portion 6b ₂ of the stationary pulley half 6 is a state that is not loosely inserted in the loose insertion supporting portion 4, the power-side variable speed pulley B Are supported only by the storage guide portion 2.

Next, the driven-side transmission pulley C is composed of a driven-side movable pulley half 17 and a driven-side fixed pulley half 18 in the same manner as the power-side transmission pulley B. In addition, the driven-side movable pulley half 17 approaches and separates from the driven-side fixed pulley half 18.

The driven-side variable speed pulley C composed of the driven-side movable pulley half 17 and the driven-side fixed pulley half 18
An output shaft 19 is provided which rotates with the rotation of the motor (see FIGS. 1 and 3). The reduction gear device F connected to the driven speed change pulley C is connected and fixed to the tire hub 25 by meshing gears in several stages. The reduction gear device F includes a tire drive shaft 21 directly connected to the tire hub 25.
Is installed. The rotation of the output shaft 19 is transmitted from the reduction gear device F, and the rotation is transmitted to the tire drive shaft 21 mounted on the reduction gear device F.

Next, in the two-wheeled vehicle, the engine and the tires are arranged in tandem as viewed from a plane, and a connecting body A on which a power-side transmission pulley B and a driven-side transmission pulley C are mounted is provided on a side portion thereof. The continuous body A is used as a base to form a continuously variable transmission pulley device. The crankshaft 22 of the engine protrudes to the side and forms a mounting portion of the continuously variable pulley device. In accordance with the change in the belt engagement diameter of the engine-side transmission pulley, the belt 20 moves in the axial direction by the belt 20 to change the belt engagement diameter of the tire-side transmission pulley.

Next, in the above-described first to third types of power-side transmission pulleys B, the fixed pulley half 6 is rotatable into the housing by the connecting body A and the cover body E via the surrounding surface member 11. There are embodiments supported by: The surrounding surface member 11 has a through hole 11c for supporting the boss portion 6b (the back side boss portion 6b ₂ ) of the fixed pulley half 6 at the center thereof (FIG. 9, FIG.
0 etc.).

The shaft supporting through hole 11c is a fixed pulley half
6 (the rear boss 6b) _Two) Can be inserted
Degree, that is, a diameter that can be inserted with a margin
And rotatably supports the fixed pulley half 6.
Things. Radiation around the shaft support through-hole 11c
A plurality of fixing arms 11b, 11b,.
(See FIG. 9). The fixing arm 11b has a fixing
Through hole 11b₁Are formed.

Further, fixed portions 3, 3,... Corresponding to the fixing arm portions 11b are formed on one of the connecting body A side and the cover body E side. , Screw hole 3
a is formed. The fixing arm portions 11b, 11b,... Of the surrounding surface member 11 are arranged on the fixed portions 3, 3,... And are fixed by bolts to support and fix the power-side transmission pulley B. In FIG. 9, the surrounding surface member 11 is fixed to the connecting body A side. FIG.
Reference numeral 0 indicates that the surrounding surface member 11 is fixed to the cover body E side.

In the cover E, a mounting hole 26 is formed from the place where the loosely inserted support portion 4 is formed to penetrate the inside and outside of the cover E, and the mounting hole 26 is formed.
Is provided with a cap member 27 (see FIGS. 4, 5 and the like). The cap member 27 is attached to the mounting operation hole 26.
The cap member 27
A screw portion is formed on the outer peripheral side surface of the device, and an inner screw is also formed in the mounting hole 26 so that both are screwed together, or the cap member 27 is fitted into the mounting hole 26. There are types.

Further, there is an embodiment in which the cap member 27 is an openable / closable type outside the cover body E via a hinge or the like. When the power transmission device of the present invention is mounted on a motorcycle, the cap member 27 is removed from the mounting work hole 26 of the cover body E, a tool is inserted through the mounting work hole 26, and the fixing tool 24 in the housing is removed. Rotate it,
The power-side transmission pulley B is mounted on the crankshaft 22 (see FIGS. 11 and 12).

Next, an assembling method for actually mounting the power transmission device on a motorcycle will be described below. First, the assembling method has two patterns. The first pattern is
This is a type in which a housing is configured by covering a coupling body A with a cover body E, and the reduction gear device F is not mounted on the cover body E. That is, the power-side transmission pulley B and the driven-side transmission pulley C are integrally modularized by a housing composed of a coupling body A and a cover body E.

First, the power transmission device is disposed while being aligned with the engine portion of the motorcycle and the tire hub 25, and the crankshaft 22 protruding from the engine side through the through hole 2b on the connecting body A side is inserted. A tool is inserted through the mounting hole 26 and the crankshaft 22 is inserted.
A nut-like fixing tool 24 is attached to a screw portion 22a formed at the shaft end of
To secure the crankshaft 22 and the power transmission device.

After the power transmission device is mounted on the motorcycle, a cap member 27 is mounted on the mounting work hole 26 in advance. In this pattern, the process is completed in one process on the assumption that the reduction gear device F is mounted on the tire hub 25 (see FIG. 11).

Next, a second pattern of the assembling method will be described. In this pattern, the first pattern is covered with a cover body E to form a housing, and a reduction gear device F is mounted on the coupling body A side of the housing. That is,
The power-side transmission pulley B, the driven-side transmission pulley C, and the reduction gear unit F are integrally modularized in a housing. In this pattern, the power transmission device can be assembled in one place, and is most easily and quickly mounted on the motorcycle, so that the work process can be minimized (see FIG. 12). .

[0047]

According to the first aspect of the present invention, the fixed pulley half 6
A crankshaft comprising a movable pulley half 5, a ramp plate 7 and a weight roller 8 for bringing the movable pulley half 5 close to the fixed pulley half 6 side, and having a screw portion 22a formed at the shaft end. 22, a power-side transmission pulley B that is pivotally supported by the fastening of the fixing tool 24, a driven-side transmission pulley C that is transmitted with power via the power-side transmission pulley B and the belt 20, and the movable side pulley C is mounted on the inner surface 1a. An enclosing wall portion 2a that allows the pulley half 5 to be freely inserted therein and supports the movable pulley half 5 in an encircling manner, and is located at a substantially central portion of the enclosing wall surface portion 2a, from the outer surface 1b to the inner surface 1a. Body having a storage guide portion 2 formed by a through hole 2b through which the crankshaft 22 penetrates, and the continuously variable transmission pulley device comprising the body A covering the inner surface 1a of the body A. Cover that constitutes the housing of A power transmission device comprising a body E and a power transmission pulley B and a driven transmission pulley C wound around a belt 20 around the housing is attached to the power transmission device. The power-side transmission pulley B and the driven-side transmission pulley C can be easily and quickly mounted on the engine and tires in the form of a structural unit (module). In addition, productivity can be improved, and manufacturing costs can be reduced.

The above effect will be described in detail. First, a storage guide portion 2 for supporting the movable pulley half 5 is formed on the inner surface 1a of the connecting member A side. Therefore, even when the power transmission device is not mounted on the two-wheeled vehicle, that is, even when the crankshaft 22 is not inserted through the power-side transmission pulley B, the power-side transmission pulley B is It is supported at a predetermined position.

Since the power-side transmission pulley B is supported by the crankshaft 22 and is mounted on the crankshaft 22 by the fixing member 24, the coupling body A is connected to the crankshaft 22 of the motorcycle. It is only necessary to arrange it on the tire hub 25 side, align the axis of the power-side transmission pulley B with the axis of the crankshaft 22, insert the crankshaft 22 into the power-side transmission pulley B, and fasten with the fixing tool 24, Work can be performed relatively easily, and work efficiency and productivity can be improved.

Next, a second aspect of the present invention relates to a fixed pulley half 6, a movable pulley half 5 having a cylindrical outer peripheral portion 5d formed on the outer periphery, and the movable pulley half 5 connected to the fixed pulley half 6 A power transmission which is constituted by a ramp plate 7 and a weight roller 8 which are brought close to each other and which is inserted through a crankshaft 22 having a screw portion 22a formed at the shaft end and which is axially supported by tightening a nut-like fixing member 24. A pulley B, a driven speed change pulley C to which power is transmitted via the power side speed change pulley B and the belt 20, and a cylindrical outer peripheral portion 5d of the movable pulley half 5 can be loosely inserted into the inner surface 1a; The cylindrical outer peripheral part 5d
Surrounding wall 2a for supporting the surroundings in an encircling manner, and surrounding wall 2
a connecting body A having a storage guide portion 2 which is located at a substantially central portion of a and comprises a through hole 2b through which the crankshaft 22 penetrates from the outer surface side 1b to the inner surface side 1a, and an inner surface side of the connecting body A 1a, and a cover body E which forms a housing of the continuously variable transmission pulley device with the coupling body A and a power transmission pulley B and a driven transmission pulley C wound around a belt 20 around the housing. First, the engine and the tire hub 25 are mounted in a state in which the power transmission device is first formed into a structural unit (module) of the power transmission pulley B and the driven transmission pulley C. Can be installed easily and quickly,
It is possible to improve the assemblability and productivity, which are not seen in the related art, and reduce the manufacturing cost.

The above effect will be described in detail.
Is formed with a cylindrical outer peripheral portion 5d. A storage guide 2 for supporting the movable pulley half 5 is formed on the inner surface 1a of the connecting body A. The storage guide portion 2 includes an enclosing wall portion 2a into which the cylindrical outer peripheral portion 5d can be loosely inserted and which can support the cylindrical outer peripheral portion 5d in an encircling manner, and a substantially central portion of the enclosing wall surface portion 2a. And a through hole 2b for mounting with the crankshaft 22 is formed from the outer surface side 1b to the inner surface side 1a.

The movable pulley half 5 is extremely stably supported by the storage guide 2 by inserting the cylindrical outer peripheral portion 5d of the movable pulley half 5 into the surrounding wall portion 2a of the storage guide 2. State. Therefore, in a state where the power transmission device is not mounted on the motorcycle, that is, in a state where the power-side transmission pulley B is not mounted on the crankshaft 22, the power-side transmission pulley B is connected to the coupling body A via the storage guide portion 2. At a predetermined position, it is supported and fixed as if it were pivotally supported.

That is, the storage guide 2 is driven by the power-side transmission pulley B
Can be rotatably supported, and the fall width of the power-side transmission pulley B in the axial direction in the coupling body A can be minimized. As a result, rattling hardly occurs at the center position of the power-side transmission pulley B. Therefore, the shaft center position of the power-side transmission pulley B can be maintained at a substantially fixed position, and the crankshaft 22 can be easily inserted through the power-side transmission pulley B.

The driven speed change pulley C can also be easily mounted on the tire via the reduction gear device F. As described above, at least the power-side transmission pulley B and the driven-side transmission pulley C are mounted on and integrated with the coupling body A, so that work efficiency and productivity can be improved.

Next, a third aspect of the present invention is directed to the first or second aspect.
In this case, the tire hub 2 is mounted on the outer surface 1b of the connector A of the housing, connected to the driven speed change pulley C,
5 is provided with a reduction gear device F that can be mounted on the power transmission device 5, so that the power transmission device includes substantially all members for mounting on the crankshaft 22 and the tire hub 25 of the engine. be able to. As a result, the number of steps can be reduced, the operation can be simplified, and the efficiency can be improved.

Next, according to a fourth aspect of the present invention, in the first, second or third aspect, the power-side transmission pulley B is formed in the fixed pulley half 6 so as to protrude in the axial direction, and the crankshaft 22 is formed. The movable pulley half 5 is slidable in the axial direction on the front boss 6b ₁ of the boss 6b to be inserted. The ramp plate 7 is connected to the shaft end of the front boss 6b ₁ of the fixed pulley half 6. The power transmission device fixed to the power transmission device can minimize the members constituting the power-side transmission pulley B, thereby simplifying the assembling work of the power transmission device.

Next, according to a fifth aspect of the present invention, in the first, second or third aspect, the power-side transmission pulley B is provided with a sleeve member 9 through which the crankshaft 22 is inserted.
A fixed pulley half 6 is disposed at an axial end of the sleeve member 9, the movable pulley half 5 mounts the sleeve member 9 slidably in the axial direction, and the ramp plate 7 With the power transmission device fixed to the shaft end, the number of constituent members of the power-side transmission pulley B can be extremely reduced, similarly to the effect of the fourth aspect.

Next, the invention of claim 6 relates to claims 1, 2, 2,
3, 4, or 5, the cover body E has a rear side boss portion 6b of the fixed pulley half 6 of the power-side transmission pulley B.
_The power transmission gear pulley B is provided with a stable supporting state in the housing including the coupling body A and the cover body E by using a power transmission device having the loosely inserted support portion 4 into which the loosely inserted support member 2 is formed. Can be obtained.

Next, the invention of claim 7 relates to a fixed pulley half 6, a movable pulley half 5, a ramp plate 7 and a weight roller for bringing the movable pulley half 5 close to the fixed pulley half 6 side. 8 and a screw portion 22a at the shaft end.
A power-side speed-change pulley B that is supported on the crankshaft 22 on which the fixing member 24 is tightened, and a driven-side speed-change pulley C that is driven by the power-side speed-change pulley B and the belt 20; An enclosing wall portion 2a which allows the movable pulley half 5 side to be freely inserted into the inner surface side 1a and supports the movable pulley half 5 side in an encircling manner; and an outer surface which is located substantially at the center of the enclosing wall surface portion 2a. A coupling body A having a storage guide portion 2 composed of a through hole 2b through which the crankshaft 22 penetrates from the side 1b to the inner side 1a, and an surrounding surface member 11 rotatably supporting the fixed pulley half 6 side. A power transmission device in which the power-side transmission pulley B and the driven-side transmission pulley C are mounted on the coupling body A, the power-side transmission pulley B is stably supported by the coupling body A. It is attached with.

In detail, the power-side transmission pulley B has its movable pulley half 5 supported by the storage guide portion 2 and the fixed pulley half 6 is supported by the surrounding surface member 11. Both ends of the power-side transmission pulley B in the axial direction are supported by the storage guide portion 2 and the surrounding surface member 11.
For this reason, the power-side transmission pulley B ensures a more stable support state in the connector A.

Next, according to an eighth aspect of the present invention, in the seventh aspect, the cover body E which covers the inner surface 1a of the connecting body A and forms a housing of the continuously variable transmission pulley device together with the connecting body A. And the surrounding surface member 11 in the housing.
, The power-side transmission pulley B and the driven-side transmission pulley C are mounted via the power transmission device. A stable support state is ensured.

Next, the invention of claim 9 relates to a fixed pulley half 6, a movable pulley half 5 having a cylindrical outer peripheral portion 5d formed on the outer periphery, and the movable pulley half 5 connected to the fixed pulley half 6 A power-side transmission pulley B, which is composed of a ramp plate 7 and a weight roller 8 which are brought close to each other, and which is inserted through a crankshaft 22 having a threaded portion at the shaft end and which is supported by tightening a nut-like fixing tool; The power-side transmission pulley B, the driven-side transmission pulley C to which power is transmitted through the power-side transmission pulley B and the belt 20, and the cylindrical outer peripheral portion 5 d of the movable pulley half body 5 on the inner surface 1 a. An enclosing wall portion 2a that is insertable and supports the cylindrical outer peripheral portion 5d in an encircling manner, and the crankshaft 22 is located substantially at the center of the enclosing wall surface portion 2a from the outer surface 1b to the inner surface 1a. And a through hole 2b Coupling body A having a storage guide portion 2 which is
And a cover body E that covers the inner surface 1a of the connecting body A and forms a housing of the continuously variable transmission pulley device with the connecting body A. The connecting body A is driven by a power-side transmission pulley B and a driven body. Side shift pulley C and the storage guide portion 2
The movable side pulley B is supported on the crankshaft 22, and the screw portion 22a formed at the shaft end of the crankshaft 22 is mounted on the coupling body A. And the driven transmission pulley C is connected to a reduction gear device mounted on the tire hub 25 side, so that the coupling body A and the cover body E are fixed to each other. Constitute the housing with
By making the module substantially integrated, the efficiency can be increased to include the step of transporting the module to another factory.

Next, according to a tenth aspect of the present invention, in the ninth aspect, the coupling body A is mounted on the tire hub 25 with the reduction gear device F mounted on the driven speed change pulley C side. The method of assembling the power transmission device allows the housing to be further fitted with a reduction gear device F by means of the coupling body A and the cover body E, thereby making it modularized, so that it can be mounted on a motorcycle in the simplest and quickest manner. be able to.

[Brief description of the drawings]

FIG. 1 is a sectional view of the present invention.

FIG. 2 is a cross-sectional view of a main part in a state where a crankshaft is inserted through a power-side transmission pulley mounted in a housing.

FIG. 3 is a cross-sectional view showing a state in which a connecting body, a cover body, and a reduction gear device are separated in the present invention.

FIG. 4 is a cross-sectional view of a main part of the present invention in a state where a crankshaft is removed from a power-side transmission pulley side.

FIG. 5 is a cross-sectional view showing a state where a connecting body, a power-side transmission pulley, and a support member are separated.

FIG. 6A is a cross-sectional view of a state in which a crankshaft is inserted through a power-side transmission pulley of another embodiment mounted in a housing. FIG. 6B is a cross-sectional view of a power-side transmission of another embodiment different from FIG. Cross section of pulley

FIG. 7 is a sectional view of a second embodiment of the present invention.

FIG. 8A is a cross-sectional view in which a power-side transmission pulley of another example is mounted on the second embodiment, and FIG. 8B is a cross-sectional view of a power-side transmission pulley of an example different from FIG. Cross section attached

FIG. 9 is a cross-sectional view of an embodiment in which a fixed pulley half of the power-side transmission pulley is pivotally supported on a connecting body via an surrounding surface member.

FIG. 10 is a sectional view of an embodiment in which a fixed pulley half of the power-side transmission pulley is pivotally supported on a cover body via an surrounding surface member.

FIG. 11 is a schematic view showing a process of a first pattern of the assembling method.

FIG. 12 is a schematic view showing a step of a second pattern of the assembling method.

FIG. 13A is a perspective view showing a state in which a power-side transmission pulley and a storage guide are separated from each other. FIG. 13B is a rear view in partial cross section showing a movable pulley half, a ramp plate, and a weight roller. ) Is a sectional view of the main part showing the operation of the lamp plate and the weight roller.

FIG. 14 is a schematic view of a conventional process.

[Explanation of symbols]

A: linked body B: power-side speed change pulley C: driven-side speed change pulley E: cover body F: reduction gear device 1a: inner surface side 1b: outer surface side 2a: surrounding wall portion 2b ... through hole 4: playable support portion 5 ... movable pulley half 5d ... cylindrical outer peripheral portion 6 ... stationary pulley half 6b ... boss portion 6b ₁ ... surface side boss portion 6b ₂ ... rear-side boss portion 7 ... ramp plate 8 ... weight roller 9 ... sleeve member 20 ... belt 22 ... Crankshaft 22a ... Screw part 24 ... Fixing tool 25 ... Tire hub

Claims (10)

[Claims] 1. A fixed pulley half, a movable pulley half,
A power-side transmission which is constituted by a ramp plate and a weight roller for bringing the movable pulley half closer to the fixed pulley half side, and which is supported on a crankshaft having a threaded portion formed at the shaft end by fastening a fastener. A pulley, a driven speed change pulley to which power is transmitted via the power speed change pulley and the belt, and an enclosure for allowing the movable pulley half to be freely inserted into an inner surface side and for supporting the movable pulley half in an encircling manner. The wall,
A coupling body having a storage guide portion which is located at a substantially central portion of the surrounding wall surface portion and includes a through hole through which the crankshaft penetrates from the outer surface side to the inner surface side, and covers the inner surface side of the coupling body. A coupling body and a cover body constituting a housing of the continuously variable transmission pulley device, wherein a power-side transmission pulley and a driven-side transmission pulley wound around a belt around the housing are mounted. Power transmission device. 2. A fixed pulley half, a movable pulley half having a cylindrical outer peripheral portion formed on the outer periphery, a ramp plate and a weight roller for bringing the movable pulley half closer to the fixed pulley half side, A power-side speed change pulley that is inserted through a crankshaft having a threaded portion at the shaft end and is supported by tightening a nut-shaped fixing tool, and a driven side that receives power transmitted through the power-side speed change pulley and a belt A speed change pulley,
An inner wall surface that allows the cylindrical outer peripheral portion of the movable pulley half to be loosely inserted therein and that supports the cylindrical outer peripheral portion in an encircling manner; A housing of the continuously variable transmission pulley device is constituted by a connecting body having a storage guide portion formed from a through hole through which the crankshaft penetrates into an inner surface, and a connecting body covering the inner surface of the connecting body. A power transmission device, comprising: a power transmission pulley and a driven transmission pulley wound around a belt around the housing. 3. A reduction gear device according to claim 1, wherein the reduction gear device is mounted on the outer surface of the connection body of the housing, is connected to the driven speed change pulley, and is mountable on a tire hub. Power transmission device. 4. The power-side speed-change pulley according to claim 1, 2 or 3, wherein the power-side speed-change pulley is formed in a fixed pulley half so as to protrude in an axial direction, and is provided on a surface-side boss of a boss through which the crankshaft is inserted. A power transmission device, wherein a movable pulley half is slidable in the axial direction, and the ramp plate is fixed to a shaft end of a front side boss portion of the fixed pulley half. 5. The power-side transmission pulley according to claim 1, wherein the power-side transmission pulley is provided with a sleeve member through which the crankshaft is inserted, and a fixed pulley half is disposed at an axial end of the sleeve member. A power transmission device characterized in that the pulley half has the sleeve member slidably mounted in the axial direction, and the ramp plate is fixed to the shaft end of the sleeve member. 6. The method according to claim 1, 2, 3, 4, or 5,
The power transmission device, wherein the cover body is formed with a loosely inserted support portion into which the rear boss portion of the fixed pulley half of the power-side transmission pulley is loosely inserted. 7. A fixed pulley half, a movable pulley half,
A power-side transmission which is constituted by a ramp plate and a weight roller for bringing the movable pulley half closer to the fixed pulley half side, and which is supported on a crankshaft having a threaded portion formed at the shaft end by fastening a fastener. A pulley, a driven speed change pulley to which power is transmitted via the power speed change pulley and the belt, and an enclosing wall surface on which the movable pulley half can be freely inserted into an inner surface and the movable pulley half is supported in an encircling manner. A coupling guide having a storage guide portion, which is located at a substantially central portion of the surrounding wall portion and extends through the crankshaft from the outer surface side to the inner surface side, and rotates the fixed pulley half side A power transmission device comprising: an enclosing surface member freely supported; and a power-side transmission pulley and a driven-side transmission pulley mounted on the coupling body. 8. The cover according to claim 7, further comprising a cover that covers an inner surface side of the connecting body and forms a housing of the continuously variable transmission pulley device together with the connecting body, wherein the surrounding surface member is provided in the housing. A power transmission device comprising a power-side transmission pulley and a driven-side transmission pulley mounted via the power transmission transmission pulley. 9. A fixed pulley half, a movable pulley half having a cylindrical outer peripheral portion formed on the outer periphery, a ramp plate and a weight roller for bringing the movable pulley half closer to the fixed pulley half side, A power-side speed-change pulley that is inserted into a crankshaft having a screw portion formed at the shaft end and is supported by tightening a nut-shaped fixing tool;
A driven-side transmission pulley to which power is transmitted via the power-side transmission pulley and the belt; and a cylindrical outer peripheral portion of the movable pulley half can be loosely inserted into the inner surface side, and the cylindrical outer peripheral portion is supported in an encircling manner. A connecting body comprising a surrounding wall portion to be formed, and a storage guide portion that is located at a substantially central portion of the surrounding wall portion and that has a through hole through which the crankshaft penetrates from the outer surface to the inner surface. A cover body that covers the inner surface side and forms a housing of the continuously variable transmission pulley device with the coupling body; a power-side transmission pulley and a driven-side transmission pulley are arranged on the coupling body; The movable pulley half is housed in the part, the cover body is attached to the connecting body, and the power-side transmission pulley is supported by the crankshaft and fixed to the threaded part formed at the shaft end of the crankshaft with a fixing tool. And
The method for assembling a power transmission device, wherein the driven-side transmission pulley is connected to a reduction gear device mounted on a tire hub side. 10. The connector according to claim 9, wherein:
With the reduction gear device mounted on the driven speed change pulley,
A method for assembling a power transmission device, wherein the power transmission device is mounted on a tire hub side.