JP4160628B1 - Transmission - Google Patents

Abstract

There is provided a transmission device that can control the rotation of an output means in accordance with a rotation difference generated between an input shaft and an output means, has a small number of parts, is compact, and has a simple structure.
An eccentric guide plate having an eccentric guide portion that is supported by an input shaft, an eccentric shaft centered at an eccentric position different from the rotation center of the input shaft, and an eccentric guide plate is provided. The second input means 15 that is rotationally driven via the power transmission means 14 and the cylindrical guide portion 16 that is guided by the eccentric guide portion 12, and the outer teeth 17 and the inner teeth that have the eccentric position of the eccentric guide plate 13 as an axis. An internal / external gear 19 provided with teeth 18 and an output means 21 having connecting internal teeth 20 whose rotation center is on the same axis as the input shaft 11 and geared to the external teeth 17 are provided. The shaft 11 is coupled via a gear coupling mechanism 22 and rotates around the eccentric guide portion 12 while rotating the inner / outer gear 19 in accordance with the difference in rotational speed between the input shaft 11 and the second input means 15.
[Selection] Figure 1

Description

The present invention relates to a transmission that controls the rotation of an output means by rotating an internal and external gear that is gear-coupled to an input shaft and an output means via internal teeth and external teeth, respectively, around the input shaft.

2. Description of the Related Art Conventionally, as a transmission for a bicycle, an exterior transmission that switches a chain to a sprocket selected from a multi-stage sprocket and an internal transmission that uses a planetary gear mechanism have been proposed. Here, in an internal transmission, for example, a gear case incorporated in a frame and a crankshaft rotating with a pedaling force of a pedal are provided with a freely rotating driven rotor, and a sprocket is fixed to one side of the crankshaft. A plurality of planetary gears are pivotally supported on a carrier that rotates integrally with the shaft, and a rotatable sun gear is engaged inside each planetary gear to absorb the difference in rotational speed between the carrier and the driven rotor. A ratchet mechanism is provided to change the speed of the internal gear that is accelerated relative to the crankshaft by switching the one-way clutch that allows or blocks the rotation of the sun gear at each stage. (For example, refer to Patent Document 1).

JP-A-6-263081

However, in the exterior type transmission, the lever is operated during traveling, so that there is a problem that the chain comes off the sprocket. Moreover, in the interior type thing described in patent document 1, many parts which comprise the one-way clutch corresponding to a ratchet mechanism, the sun gear of each stage, or an internal gear are needed, and the structure is complicated. There is.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and a transmission device that can control the rotation of the output means according to the rotation difference generated between the input shaft and the output means, has a small number of parts, is compact, and has a simple structure. The purpose is to provide.

The transmission according to the first invention that meets the above-described object includes an input shaft connected to the input means,
An eccentric guide plate having an annular eccentric guide portion centered on an eccentric position different from the center of rotation, which is rotatably supported around the input shaft;
Second input means for rotationally driving the eccentric guide plate via power transmission means;
An internal / external gear provided with a cylindrical guide portion guided by the eccentric guide portion of the eccentric guide plate, and provided with external teeth and internal teeth centered on the eccentric position of the eccentric guide plate;
An output means having a rotation center located on the same axis as the input shaft, and having connecting internal teeth that are gear connected to the external teeth of the internal and external gears;
A casing that houses the eccentric guide plate, the internal and external gears, a part of the input shaft, and a part of the output means;
The internal teeth of the internal and external gears are connected to the input shaft through a gear connection mechanism, and the eccentric guide portion rotates the internal and external gears according to a difference in rotational speed between the input shaft and the second input means. Circulate along.

In the transmission according to the first aspect, it is preferable that a roller bearing is mounted between the eccentric guide portion and the cylindrical guide portion.
Further, the gear coupling mechanism is connected to the input shaft on the outer peripheral side and connected to the output means on the outer peripheral side, and is rotatably supported on the same axis as the input shaft, and is different from the rotation center thereof. A second eccentric guide plate having an annular second eccentric guide portion centered on an eccentric position, and a second cylindrical guide portion guided by the second eccentric guide portion, and the second eccentric guide. A second internal and external gear provided with a second external tooth and a second internal tooth respectively connected to a large-diameter internal tooth provided on the large-diameter gear with the eccentric position of the plate as a common axis; The input shaft and the shaft center are aligned with each other, and third external teeth that are gear-coupled to the internal teeth of the internal and external gears and fourth external teeth that are gear-coupled to the second internal teeth are provided on both sides. A configuration having a small-diameter external gear is preferable.

In the transmission according to the first aspect, it is preferable that the input shaft is connected to the casing via a one-way clutch.
Further, it is preferable that a second roller bearing is mounted between the second eccentric guide portion and the second cylindrical guide portion.

A transmission according to a second invention that meets the above-described object includes a fixed shaft disposed in the center,
An eccentric guide plate rotatably attached to the fixed shaft and having an annular eccentric guide portion centered on an eccentric position different from the axis of the fixed shaft;
An input shaft of input means coupled to the eccentric guide plate via a one-way clutch;
An internal / external gear including an internal tooth and an external tooth having a cylindrical guide portion that is guided by being fitted into the eccentric guide portion, and having a common shaft center with the cylindrical guide portion;
An output means that is rotatably attached to the fixed shaft, and has a connecting internal tooth that is gear-connected to the external tooth of the internal / external gear with a common shaft center of the fixed shaft;
Gears are connected to the internal teeth of the internal and external gears via a gear connection mechanism, one side abuts the center of the side of the eccentric guide plate via a pressure mounting means, and the other side passes through the central part and the fixed shaft. 2 and a pressing portion that rotates together with the eccentric guide plate, and when the output means is loaded, the rotating inner and outer gears follow the eccentric guide portion. The pressing portion is slid with respect to the eccentric guide plate while rotating around.

In the transmission according to the second aspect of the present invention, it is preferable that a roller bearing is mounted between the eccentric guide portion and the cylindrical guide portion.
The pressing attachment means has an opening on the side of the pressing portion facing the eccentric guide plate, and surrounds the fixed shaft in parallel with the fixed shaft passing through the pressing portion, and is equally spaced in the circumferential direction. A plurality of holes formed in the hole, a spring inserted into the hole from the base side and provided with a ball on the tip side, and a side facing the pressing part of the eccentric guide plate, A trough that accommodates the urged ball and a crest that prevents the movement of the ball may include annular grooves that are alternately formed in the circumferential direction in accordance with the interval between the holes.

In the transmission according to the second invention, the gear coupling mechanism is connected to the output means on the outer peripheral side and is rotatably supported on the same axis as the fixed shaft, and has an eccentric position different from the rotation center. A second eccentric guide plate having an annular second eccentric guide portion as a center, and a second cylindrical guide portion guided by the second eccentric guide portion, the eccentricity of the second eccentric guide plate A second inner and outer gear each having a second inner tooth whose position is a common axis and a second outer tooth connected to a large-diameter inner tooth provided in the pressing portion, and the inner and outer gears. A first small-diameter external tooth that is gear-coupled to the tooth, and a small-diameter external gear that includes a second small-diameter external tooth that is gear-coupled to the second internal tooth of the second internal / external gear. be able to.
And it is preferable that the 2nd roller bearing is mounted | worn between the said 2nd eccentric guide part and the said 2nd cylindrical guide part.

In the transmission according to any one of claims 1 to 5, the internal and external gears connected to the input shaft and the output means via internal teeth and external teeth respectively circulate around the input shaft along the eccentric guide portion. Is not transmitted to the output means at a ratio determined by the number of teeth between the gears, and the rotation of the output means can be shifted (decelerated). Since the rotation of the output means can be changed only by adjusting the peripheral speed of the internal and external gears, the number of parts constituting the transmission is reduced, and the structure of the transmission can be simplified and made compact.

In particular, in the transmission according to claim 2, since the roller bearing is mounted between the eccentric guide portion and the cylindrical guide portion, the inner and outer gears can circulate with low resistance along the eccentric guide portion, The power transmission efficiency from the input means to the output means can be maintained at a high level.

In the transmission according to claim 3, the eccentric guide plate can be rotated around the input shaft by rotating the eccentric guide plate around the input shaft at the rotational speed of the second input means, and the gear coupling The internal and external gears rotating at a rotational speed based on the rotational speed of the input shaft can be circulated along the eccentric guide portion via the mechanism.

In the transmission according to claim 4, since the input shaft is connected to the casing via a one-way clutch, when the output means is locked, reverse rotation occurs in the small-diameter outer gear via the inner and outer gears, The reverse rotation is transmitted to the second internal / external gear, and this reverse rotation is transmitted to the large diameter gear via the second internal / external gear to try to reversely rotate the large diameter gear. However, the large diameter gear cannot be reversely rotated and stops. Thereby, the output means, the eccentric guide plate, the internal / external gear, the small-diameter external gear, the second internal / external gear, and the large-diameter gear can all be stopped together.

In the transmission according to claim 5, since the second roller bearing is mounted between the second eccentric guide portion and the second cylindrical guide portion, the second inner and outer gears are moved to the second eccentric gear. It can be made to circulate along a guide part with low resistance, and the rotational power from an input means can be efficiently transmitted to an internal / external gear via a 2nd internal / external gear.

In the transmission according to any one of claims 6 to 10, when a load is generated in the output means, the pressing portion is slid with respect to the eccentric guide plate while rotating the rotating inner and outer gears along the eccentric guide portion. Is not transmitted to the output means at a ratio determined by the number of teeth between the gears, and the rotation of the output means can be shifted (decelerated).

In particular, in the transmission according to claim 7, since the roller bearing is mounted between the eccentric guide portion and the cylindrical guide portion, the inner and outer gears can circulate with low resistance along the eccentric guide portion, The power transmission efficiency from the input means to the output means can be maintained at a high level.

In the transmission according to claim 8, when a load is applied to the output means rotating integrally with the input shaft, the rotation speed transmitted to the output means is determined by sliding the pressing portion with a simple configuration. Can be adjusted.

In the transmission according to the ninth aspect, when a load is applied to the output means, the load can be transmitted to the pressing portion.

In the transmission according to claim 10, since the second roller bearing is mounted, the second internal / external gear can be rotated with low resistance along the second eccentric guide portion and added to the output means. Load can be efficiently transmitted to the pressing portion.

Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention.
1 is a side sectional view of the transmission according to the first embodiment of the present invention, FIG. 2 is a partially cutaway front view of the transmission, and FIG. 3 is a second embodiment of the present invention. It is a sectional side view of the transmission which concerns on.

As shown in FIGS. 1 and 2, the transmission 10 according to the first embodiment of the present invention includes an input shaft 11 connected to an input unit (not shown), and is rotatably supported around the input shaft 11. An eccentric guide plate 13 having an annular eccentric guide portion 12 centered on an eccentric position different from the center of rotation, and the eccentric guide plate 13 are rotationally driven via a gear 14 which is an example of power transmission means. And a rotation speed variable motor 15 which is an example of the second input means. Furthermore, the transmission 10 includes a cylindrical guide portion 16 that is guided by the eccentric guide portion 12 of the eccentric guide plate 13, and is provided with external teeth 17 and internal teeth 18 that have the eccentric position of the eccentric guide plate 13 as an axis. An internal / external gear 19 and an output shaft 21, which is an example of output means having a rotation center on the same axis as the input shaft 11, and having connecting internal teeth 20 that are gear-connected to the external teeth 17 of the internal / external gear 19 are provided. The internal teeth 18 of the internal / external gear 19 are connected to the input shaft 11 via a gear connection mechanism 22. Details will be described below.

The transmission 10 has a casing 23 that accommodates the eccentric guide plate 13 and the internal / external gear 19 on the inside, and an input shaft insertion portion that is provided with bearings 24 on both sides (axial direction) of the casing 23 and that protrudes into the casing 23. 25, and an output shaft insertion portion 27 having a bearing 26 concentric with the input shaft insertion portion 25, respectively. The front side of the input shaft 11 whose base side is connected to a rotational power source (not shown) is supported by the bearing 24 and introduced into the casing 23. On the other hand, the output shaft 21 is supported by a bearing 26 and has a shaft portion 28 whose front side is led out from the inside of the casing 23, and is connected to the base side of the shaft portion 28 and is provided in the casing 23 and concentric with the shaft portion 28. The disc portion 29 and the cylindrical portion 30 concentric with the shaft portion 28 are provided so as to be connected to the outer periphery of the disc portion 29. The connecting internal teeth 20 are formed on the base side of the inner surface of the cylindrical portion 30, and the front side of the input shaft 11 is connected to the casing 23 via a one-way clutch 31 attached to the protruding end portion of the input shaft insertion portion 25. It is linked to.

The gear coupling mechanism 22 is connected on the outer peripheral side to a large-diameter gear 32 that is connected to the front portion of the input shaft 11 and an intermediate portion of the inner surface of the cylindrical portion 30 of the output shaft 21 (front side from the coupling internal teeth 20). A second eccentric guide plate 34 that is supported rotatably on the same axis as the input shaft 11 and has an annular second eccentric guide portion 33 centered on an eccentric position different from the rotation center thereof; A second cylindrical guide portion 35 guided by the second eccentric guide portion 33, and a large-diameter internal tooth 36 provided on the large-diameter gear 32 with the eccentric position of the second eccentric guide plate 34 as a common axis. A second inner / outer gear 39 provided with a second outer tooth 37 and a second inner tooth 38 to be connected to the gear, and the input shaft 11 and the shaft center thereof are aligned with each other. Third external teeth 40 to be connected, and fourth external teeth connected to the second internal teeth 38 by gears And a small-diameter external gear 42 with 1 on both sides axis direction.

Here, the large-diameter gear 32 is rotatably attached to the proximal end portion of the shaft portion 28 of the output shaft 21 via a bearing 43. A bearing 44 is disposed between the proximal end portion of the inner surface of the cylindrical portion 30 of the output shaft 21 and the outer peripheral end portion of the eccentric guide plate 13, and the eccentric guide plate 13 is disposed on the outer peripheral side of the input shaft insertion portion 25. It is provided rotatably through the. As a result, the rotational power is transmitted from the gear 14 attached to the motor shaft 47 of the motor 15 to the eccentric guide plate 13 via the gear 46 provided on the eccentric guide plate 13 by driving the motor 15. Can be rotated concentrically with the input shaft 11 and the shaft portion 28 (output shaft 21). A roller bearing 48 is mounted between the eccentric guide portion 12 and the cylindrical guide portion 16, and a second roller bearing 49 is provided between the second eccentric guide portion 33 and the second cylindrical guide portion 35. The internal and external gears 19 and the second internal and external gears 39 can be rotated with low resistance along the eccentric guide portion 12 and the second eccentric guide portion 33, respectively.

Then, the effect | action of the transmission 10 which concerns on the 1st Embodiment of this invention is demonstrated.
As shown in FIGS. 1 and 2, when the input shaft 11 is rotated in the forward rotation direction with the motor 15 being stopped, the large-diameter gear 32 rotates in the same direction, and the large-diameter gear 32 has a large diameter inside. The teeth 36, the second external teeth 37 of the second internal / external gear 39, the second internal teeth 38, and the fourth external teeth 41 of the small-diameter external gear 42 rotate and engage with the small-diameter external gear 42. By rotating the inner and outer gears 19 that mesh with each other, the cylindrical portion 30 that meshes with the inner and outer gears 19 also rotates in the same direction as the input shaft 11, and the rotation of the input shaft 11 is transmitted to the output shaft 21. At this time, the eccentric guide plate 13 also rotates, so that all rotate integrally. In addition, the motor shaft 47 integral with the gear 14 meshing with the gear 46 provided on the eccentric guide plate 13 rotates idly.

When the motor 15 is driven to rotate the eccentric guide plate 13 concentrically with the input shaft 11, the rotation input from the eccentric guide plate 13 is engaged with the external teeth 17 of the internal and external gears 19 via the connecting internal teeth 20. 30 (output shaft 21) is rotated. At this time, a reverse rotation force is applied to the small-diameter external gear 42 provided with the third external teeth 40 that mesh with the internal teeth 18 of the internal / external gear 19. On the other hand, the second inner / outer gear 39 that meshes with the small-diameter outer gear 42 via the fourth outer teeth 41 is connected to the second eccentric guide plate 34 connected to the cylindrical portion 30 via the second cylindrical guide portion 35. The second external teeth 37 of the second internal / external gear 39 mesh with the large-diameter internal teeth 36 of the large-diameter gear 32, and the large-diameter gear 32 is connected to the input shaft 11 and is controlled to rotate. Therefore, internal and external gear 19, circling along the connecting inner tooth 20 of the cylindrical portion 30 while rotating, to decelerate rotation of the cylindrical portion 30 (output shaft 21). That is , the second internal / external gear 39 connected to the cylindrical portion 30 via the second eccentric guide plate 34 meshes with the large-diameter internal teeth 36 of the large-diameter gear 32 and circulates. The small-diameter external gear 42 meshing with the internal teeth 38 is rotated in the reverse direction. The reverse rotation is transmitted to the third external teeth 40 meshing with the internal teeth 18 of the internal / external gear 19, and the reverse rotational speed is the rotational speed of meshing with the connecting internal teeth 20 of the cylindrical portion 30 while the internal / external gear 19 rotates. Change the speed to change the speed.

Here, when the output shaft 21 is locked, reverse rotation occurs in the small-diameter external gear 42 via the internal / external gear 19, and this reverse rotation is transmitted to the large-diameter gear 32 via the second internal / external gear 39. An attempt is made to reversely rotate the radial gear 32. However, since the input shaft 11 is connected to the casing 23 via the one-way clutch 31, the large-diameter gear 32 cannot rotate in the reverse direction and stops. As a result, the output shaft 21, the eccentric guide plate 13, the internal / external gear 19, the small-diameter external gear 42, the second internal / external gear 39, and the large-diameter gear 32 all stop together.

As shown in FIG. 3, the transmission 50 according to the second embodiment of the present invention is used for a bicycle, and is fixed to a fixed shaft 50a disposed in the center, and rotated to the fixed shaft 50a via a bearing 53. An eccentric guide plate 55 having an annular eccentric guide portion 54 centered at an eccentric position different from the axis of the fixed shaft 50a, and an eccentric guide plate 55 connected to the eccentric guide plate 55 via a one-way clutch 85, An input shaft 52 provided on a sprocket 51 which is an example of input means rotatably attached to a fixed shaft 50a via a 51a, and a cylindrical guide portion 56 which is guided by being fitted into an eccentric guide portion 54 are provided. The internal gear 57 provided with the internal tooth 57 and the external tooth 58 which shared the axial center with the part 56 is provided. Further, the speed change device 50 is an example of an output unit that is rotatably attached to the fixed shaft 50a, and includes connecting internal teeth 60 that are gear-connected to the external teeth 58 of the internal / external gear 59 with the common shaft center of the fixed shaft 50a. The wheel 62 that rotates the rear wheel via the spoke 61, the internal gear 57 of the internal / external gear 59 and the gear connection mechanism 63 are connected to the gear, and one side is pressed and attached to the center of the side of the eccentric guide plate 55. , And the other side has a pressing portion 65 that is connected to the fixed shaft 50a penetrating the center portion via the second one-way clutch 84 and rotates integrally with the eccentric guide plate 55. Here, the forward rotation directions of the one-way clutch 85 and the second one-way clutch 84 are matched. Details will be described below.

The gear coupling mechanism 63 is connected to the inner side of the wheel 62 on the outer peripheral side, is rotatably supported on the same axis as the fixed shaft 50a, and has an annular second eccentricity centered on an eccentric position different from the rotation center. A second eccentric guide plate 67 having a guide portion 66 and a second cylindrical guide portion 68 guided by the second eccentric guide portion 66 are provided, and the eccentric position of the second eccentric guide plate 67 is set as a common axis. A second inner / outer gear 71 and a second / outer gear 59 each having a second outer tooth 70 connected to the large-diameter inner tooth 76 of the large-diameter gear 75 provided on the second inner tooth 69 and the pressing portion 65. A small-diameter external gear 74 provided on both sides with a first small-diameter external tooth 72 geared to the internal tooth 57 and a second small-diameter external tooth 73 gear-coupled to the second internal tooth 69 of the second internal / external gear 71. And have. The large diameter gear 75 is rotatably attached to the fixed shaft 50a via a bearing 75a.

The pressing attachment means 64 has an opening on the side of the pressing portion 65 facing the eccentric guide plate 55 and surrounds the fixed shaft 50a in parallel with the fixed shaft 50a penetrating the pressing portion 65, and is equally spaced in the circumferential direction. A plurality of hole portions 78 formed on each other, a spring 80 inserted into each of the hole portions 78 from the base side and provided with a ball 79 on the front side, and a side facing the pressing portion 65 of the eccentric guide plate 55, A trough 81 that accommodates the ball 79 biased by the spring 80 and a crest 82 that prevents the ball 79 from moving have annular grooves 83 that are alternately formed in the circumferential direction in accordance with the interval between the holes 78. Yes.

Here, on both sides of the inner surface of the wheel 62, a disc portion 86 having a bearing 87 for supporting the fixed shaft 50a at the center portion and a bearing 88 for supporting the outer peripheral side of the eccentric guide plate 55 are arranged. This assists the wheel 62 to rotate concentrically with the fixed shaft 50a. A cylindrical part 89 is provided concentrically with the disk part 86 in the intermediate part in the radial direction of the disk part 86, and a pressing ring member 91 is provided on the outer peripheral part of the cylindrical part 89 via a brake pad 90. ing.
A roller bearing 92 is mounted between the eccentric guide portion 54 and the cylindrical guide portion 56, and a second roller bearing 93 is interposed between the second eccentric guide portion 66 and the second cylindrical guide portion 68. The inner and outer gears 59 and the second inner and outer gears 71 can rotate with low resistance along the eccentric guide portion 54 and the second eccentric guide portion 66, respectively.

Then, the effect | action of the transmission 50 which concerns on the 2nd Embodiment of this invention is demonstrated.
As shown in FIG. 3, when the input shaft 52 is rotated in the forward rotation direction of the one-way clutch 85 (second one-way clutch 84), the eccentric guide plate 55 rotates in the same direction around the fixed shaft 50a. Accordingly, the internal / external gear 59 rotates and the wheel 62 rotates in the same direction as the input shaft 52. On the other hand, the rotation of the inner / outer gear 59 is transmitted to the pressing portion 65 via the gear coupling mechanism 63, and the pressing portion 65 rotates integrally with the eccentric guide plate 55 via the pressing attachment means 64.

The rotation input from the eccentric guide plate 55 rotates the wheel 62 that meshes with the external teeth 58 of the internal / external gear 59 via the connecting internal teeth 60. At this time, a reverse rotation force is applied to the small-diameter external gear 74 including the first small-diameter external teeth 72 that mesh with the internal teeth 57 of the internal / external gear 59. On the other hand, the second inner / outer gear 71 meshed with the small diameter outer gear 74 via the second small diameter outer teeth 73 is connected to the second eccentric guide plate 67 connected to the wheel 62 via the second cylindrical guide portion 68. Then, the second external teeth 70 of the second internal / external gear 71 mesh with the large-diameter internal teeth 76 of the large-diameter gear 75, and the large-diameter gear 75 is connected to the eccentric guide plate 55 (input shaft 52) via the pressing attachment means 64. Rotation control is integrated. Therefore, internal and external gear 59, while rotating orbiting along the connecting inner tooth 60 of the wheel 62 slows down rotation of the wheel 62. That is , the second internal / external gear 71 connected to the wheel 62 via the second eccentric guide plate 67 meshes with the large-diameter internal teeth 76 of the large-diameter gear 75 and circulates. The small-diameter external gear 74 meshed with the internal teeth 69 is rotated in the reverse direction. The reverse rotation is transmitted to the first small-diameter external teeth 72 that mesh with the internal teeth 57 of the internal / external gear 59, and the reverse rotational speed is the rotational speed that meshes with the connecting internal teeth 60 of the wheel 62 while the internal / external gear 59 rotates. Change the speed to change the speed.

When a load is applied to the rotating wheel 62, the internal / external gear 59 transmits the rotation of the input shaft 52 to the wheel 62 while circling along the eccentric guide portion 54 of the eccentric guide plate 55. Here, a reverse rotation force is generated in the small-diameter external gear 74 via the internal / external gear 59, and this reverse rotation force is transmitted to the pressing portion 65 via the second internal / external gear 71 and via the press attachment means 64. Thus, the pressing portion 65 that has been rotated integrally with the eccentric guide plate 55 slips on the eccentric guide plate 55. Thereby, the difference between the rotational speed of the eccentric guide plate 55 and the rotational speed of the pressing portion 65 is absorbed.

Here, when the wheel 62 is locked, reverse rotation occurs in the small-diameter external gear 74 via the internal / external gear 59, and this reverse rotation attempts to reversely rotate the pressing portion 65 via the second internal / external gear 71. To do. However, since the pressing portion 65 and the fixed shaft 50a are connected via the second one-way clutch 84, the pressing portion 65 cannot rotate in the reverse direction and stops. Thereby, the wheel 62, the eccentric guide plate 55, the internal / external gear 59, the small-diameter external gear 74, the second internal / external gear 71, and the pressing portion 65 are all stopped together.

As described above, the present invention has been described with reference to the embodiment. However, the present invention is not limited to the configuration described in the above-described embodiment, and the matters described in the scope of claims. Other embodiments and modifications conceivable within the scope are also included.

It is a sectional side view of the transmission which concerns on the 1st Embodiment of this invention. It is a partially cutaway front view of the transmission. It is a sectional side view of the transmission which concerns on the 2nd Embodiment of this invention.

Explanation of symbols

10: Transmission, 11: Input shaft, 12: Eccentric guide part, 13: Eccentric guide plate, 14: Gear, 15: Motor, 16: Cylindrical guide part, 17: External tooth, 18: Internal tooth, 19: Internal and external gear , 20: coupling internal teeth, 21: output shaft, 22: gear coupling mechanism, 23: casing, 24: bearing, 25: input shaft insertion portion, 26: bearing, 27: output shaft insertion portion, 28: shaft portion, 29 : Disc part, 30: cylindrical part, 31: one-way clutch, 32: large gear, 33: second eccentric guide part, 34: second eccentric guide plate, 35: second cylindrical guide part, 36 : Large-diameter internal teeth, 37: second external teeth, 38: second internal teeth, 39: second internal and external gears, 40: third external teeth, 41: fourth external teeth, 42: small-diameter external Gears 43, 44, 45: Bearings 46: Gears 47: Motor shaft 48: Roller bearings 49: Second roller bearings 50 Transmission: 50a: fixed shaft, 51: sprocket, 51a: bearing, 52: input shaft, 53: bearing, 54: eccentric guide, 55: eccentric guide plate, 56: cylindrical guide, 57: internal teeth, 58: External teeth, 59: internal and external gears, 60: connecting internal teeth, 61: spokes, 62: wheels, 63: gear connecting mechanism, 64: pressing attachment means, 65: pressing part, 66: second eccentric guide part, 67: Second eccentric guide plate, 68: Second cylindrical guide portion, 69: Second internal tooth, 70: Second external tooth, 71: Second internal / external gear, 72: First small-diameter external tooth, 73 : Second small diameter external teeth, 74: small diameter external gear, 75: large diameter gear, 75a: bearing, 76: large diameter internal teeth, 77: insertion portion, 78: hole, 79: ball, 80: spring, 81 : Valley, 82: mountain, 83: annular groove, 84: second one-way clutch, 85: one-way clutch Ji, 86: disk portion, 87, 88: bearing, 89: cylindrical portion, 90: brake pads, 91: pressing the ring-shaped member, 92: roller bearing, 93: second roller bearing

Claims (10)

An input shaft connected to the input means;
An eccentric guide plate having an annular eccentric guide portion centered on an eccentric position different from the center of rotation, which is rotatably supported around the input shaft;
Second input means for rotationally driving the eccentric guide plate via power transmission means;
An internal / external gear provided with a cylindrical guide portion guided by the eccentric guide portion of the eccentric guide plate, and provided with external teeth and internal teeth centered on the eccentric position of the eccentric guide plate;
An output means having a rotation center located on the same axis as the input shaft, and having connecting internal teeth that are gear connected to the external teeth of the internal and external gears;
A casing that houses the eccentric guide plate, the internal and external gears, a part of the input shaft, and a part of the output means;
The internal teeth of the internal and external gears are connected to the input shaft through a gear connection mechanism, and the eccentric guide portion rotates the internal and external gears according to a difference in rotational speed between the input shaft and the second input means. A transmission characterized in that it is circulated along. 2. The transmission according to claim 1, wherein a roller bearing is mounted between the eccentric guide portion and the cylindrical guide portion. 3. The transmission according to claim 1, wherein the gear coupling mechanism includes a large-diameter gear connected to the input shaft and an outer peripheral side connected to the output means and the same shaft as the input shaft. A second eccentric guide plate having an annular second eccentric guide portion that is supported rotatably on the center and has an eccentric position different from the rotation center thereof, and is guided by the second eccentric guide portion. A second cylindrical tooth portion provided with a second cylindrical guide portion and gear-coupled to a large-diameter internal tooth provided in the large-diameter gear with the eccentric position of the second eccentric guide plate as a common axis; Second internal and external gears each provided with internal teeth, and third external teeth and second internal teeth that are arranged in alignment with the input shaft and the shaft and are gear-coupled to the internal teeth of the internal and external gears A small-diameter external gear provided with a fourth external tooth on each side. Transmission apparatus according to claim. 4. The transmission according to claim 3, wherein the input shaft is connected to the casing via a one-way clutch. 5. The transmission according to claim 3, wherein a second roller bearing is mounted between the second eccentric guide portion and the second cylindrical guide portion. 6. And a transmission. A fixed shaft arranged in the center;
An eccentric guide plate rotatably attached to the fixed shaft and having an annular eccentric guide portion centered on an eccentric position different from the axis of the fixed shaft;
An input shaft of input means coupled to the eccentric guide plate via a one-way clutch;
An internal / external gear including an internal tooth and an external tooth having a cylindrical guide portion that is guided by being fitted into the eccentric guide portion, and having a common shaft center with the cylindrical guide portion;
An output means that is rotatably attached to the fixed shaft, and has a connecting internal tooth that is gear-connected to the external tooth of the internal / external gear with a common shaft center of the fixed shaft;
Gears are connected to the internal teeth of the internal and external gears via a gear connection mechanism, one side abuts the center of the side of the eccentric guide plate via a pressure mounting means, and the other side passes through the central part and the fixed shaft. 2 and a pressing portion that rotates together with the eccentric guide plate, and when the output means is loaded, the rotating inner and outer gears are moved along the eccentric guide portion. The transmission is characterized by sliding the pressing portion with respect to the eccentric guide plate while rotating around. The transmission according to claim 6, wherein a roller bearing is mounted between the eccentric guide portion and the cylindrical guide portion. 8. The transmission according to claim 6, wherein the pressing attachment means has an opening on a side of the pressing portion facing the eccentric guide plate and passes through the pressing portion. 9. A plurality of holes formed at equal intervals in the circumferential direction so as to surround the fixed shaft in parallel with each other, a spring inserted into each of the holes from the base side and provided with a ball on the front side, and the eccentric guide plate Are provided on the side opposite to the pressing portion, and a trough that accommodates the ball biased by the spring and a mountain that prevents the movement of the ball are alternately formed in the circumferential direction according to the interval of the hole portion. A transmission having an annular groove. The transmission according to any one of claims 6 to 8, wherein the gear coupling mechanism is connected to the output means on the outer peripheral side, and is rotatably supported on the same axis as the fixed shaft. A second eccentric guide plate having an annular second eccentric guide portion centered on an eccentric position different from the center, and a second cylindrical guide portion guided by the second eccentric guide portion, A second internal / external gear provided with a second internal tooth having an eccentric position of the two eccentric guide plates as a common axis and a second external tooth connected to a large-diameter internal tooth provided in the pressing portion, respectively. A first small-diameter outer tooth that is gear-coupled to the inner teeth of the inner-outer gear, and a second smaller-diameter outer tooth that is gear-coupled to the second inner tooth of the second inner-outer gear. A transmission having a gear. 10. The transmission according to claim 9, wherein a second roller bearing is mounted between the second eccentric guide portion and the second cylindrical guide portion.

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