WO2001042685A1

WO2001042685A1 - Rotary converting device

Info

Publication number: WO2001042685A1
Application number: PCT/JP1999/006840
Authority: WO
Inventors: Nobuo Takata
Original assignee: Kabushiki Kaisha Ken. Matsuura Racing Service
Priority date: 1999-12-06
Filing date: 1999-12-06
Publication date: 2001-06-14

Abstract

An impact screw tightening head, which is an example of application of a rotary converting device, comprising a one-way clutch (1), an eccentric structural body (2), and a torque transmission part (3) as shown in the figure, the eccentric structural body (2) further comprising an eccentric part (23) which is formed of shaft end parts (21) and (22) on both sides and displaced from a center (C), its ring part (23a), contact members (24), and so forth, wherein, when the shaft end part on one side (21) is rotated by an input end (11c) through the one-way clutch (1), the eccentric ring part (23) comes into contact with the contact member (24) and the eccentric part (23) deforms so as to store a deformation energy and, when the deformation becomes maximum, the deformation energy is released so as to provide a rotating energy to the eccentric structural body, whereby the rotating energy is transmitted from the contact member to the torque transmission part (3) so as to provide an impact torque to a nut which is to be tightened by a tightening part (32).

Description

Specification

Rotation converter

Technical field

The present invention relates to a rotation conversion device that converts an input rotation in one direction and outputs the rotation.For example, the rotation conversion device converts the rotation into torque only, distributes the fluctuating input torque in a uniform direction, and increases the rotation. The present invention relates to a new mechanism capable of limiting the torque after further increasing the speed, or performing various conversions. Background art

Conventional rotation conversion devices include devices that increase or decrease the rotation speed in a fixed manner, such as gears, devices that simply couple or block rotation, such as clutches, and limit transmission torque, such as torque limiters. It was just a device. Disclosure of the invention

SUMMARY OF THE INVENTION It is an object of the present invention to provide a rotation conversion device which does not exist in the prior art and which can convert an input rotation into various forms related to speed and torque.

According to a first aspect of the present invention, there is provided a rotation conversion device that converts an input one-way rotation and outputs the rotation, the one-way rotation transmission device including a one-way rotation transmission unit, a torque storage unit, and a rotation output unit. When the one-way rotation is input, the one-way rotation transmitting means transmits only the one-way rotation, and the torque accumulating means includes a one-side shaft end and a second-side shaft end forming an axis. The one-side shaft end and the other-side shaft end to which the one-way rotation is transmitted from the one-way rotation transmitting portion to at least one of the shaft ends, and an eccentric portion eccentric from the shaft. A contact member that makes contact while the eccentric portion makes one rotation about the axis, wherein the rotation output means is coupled to the torque storage means and outputs the converted rotation. .

The second invention has, in addition to the features of the first invention, a second-direction rotation transmitting means and a second rotation output means, wherein the second-direction rotation transmitting means is connected to the rotation output means. Then, when the rotation in one direction is input, the rotation is transmitted only in one direction, and the second rotation output means is coupled to the second-direction rotation transmission means and outputs the converted rotation. It is characterized by the following.

According to the first invention, since the rotation conversion device includes the one-way rotation transmitting means, the torque accumulating means, and the rotation output means, any one-way rotation input as a continuous torque, an intermittent torque, or the like can be performed. It can be converted to torque only, torque distributed, increased speed, and converted into various forms. That is, since the torque storage means has an eccentric portion eccentric from both shaft ends forming the axis, and the eccentric portion is provided with a contact member that comes into contact with the eccentric portion during one rotation around the axis. By bringing the contact member into contact with the eccentric part, the eccentric rotating contact part is deformed for each rotation to generate a resistance moment around the axis, and the same axis is used when this deformation is released. A release moment in the direction opposite to the center can be generated. Then, rotation in only one direction is transmitted to generate a free release moment, which can be output in various forms by the rotation output means. As a result, the release moment can be used in the form of an impact torque, a distribution torque, a speed-up torque, or the like.

According to the rotation transmitting means as described above, the simple structure using only mechanical elements can improve the performance of various rotationally driven devices and the convenience in use.

According to the second invention, in addition to the above, since the second-direction rotation transmitting means and the second rotation output means are provided, the second-direction rotation transmitting means is provided with the torque accumulated by the torque accumulating means. Only the speed torque can be transmitted to the second rotation output means. As a result, even in the speed increasing process, even if the rotation speed of the second rotation output means becomes higher than that of the torque accumulation means, the torque accumulation means can rotate down to the rotation on the input side and receive the input side torque. Then, this is converted into a torque for speed increase, and the speed of the second rotation output means can be further increased. That is, according to the second aspect of the invention, it is possible to provide a speed increaser having a fixed gear ratio such as a gear. In this case, by adjusting the contact amount of the contact member of the torque storage means, it becomes possible to change the speed increase ratio or to reduce the speed in relation to the load torque. BRIEF DESCRIPTION OF THE FIGURES

Fig. 1 shows the structure of an impact screw tightening head, which is an application example of the rotation converter of the present invention. Sectional view showing an example,

2 (a) and (b) are explanatory views of the operation of the impact screw tightening head, and FIG. 3 is a cross-sectional view showing a structural example of a torque distribution device which is another application example of the rotation conversion device of the present invention.

FIG. 4 is an explanatory diagram of the operation of the above device,

FIG. 5 is a cross-sectional view showing a structural example of a gearbox with a torque limit function, which is still another application example of the rotation conversion device of the present invention.

Fig. 6 shows an adjusting device applied to the gearbox with a torque limiting function of Fig. 5, (a) is a side view, (b) is a front view showing a partial cross section, and

FIG. 7 is an explanatory view showing another example of the setting member. BEST MODE FOR CARRYING OUT THE INVENTION

FIG. 1 shows an example of the structure of an impact screw tightening head to which a rotation conversion device to which the present invention is applied is applied.

The impact screw tightening head converts one direction input from the right drive side in the figure on one side, for example, clockwise rotation (hereinafter referred to as “right rotation”) as viewed from the right side indicated by the arrow in the figure. In the figure on the other side, it is a device that outputs to the left end side.One-way clutch 1 as one-way rotation transmission means, eccentric structure 2 as torque storage means, torque transmission section 3 as rotation output means, etc. Have.

On the other hand, when the clockwise rotation as shown in the figure is input, the clutch 1 transmits only the rotation in that direction. That is, when the rotation on the input side is faster than the rotation on the output side, the rotation is transmitted. As described later, when the rotation on the output side is faster than the rotation on the input side, the rotation is not transmitted between them. On the other hand, the clutch 1 is, for example, a known rolling bearing clutch, and includes, as main members, an inner race 11 having a raceway surface 11a, an outer race 12 having a raceway surface 12a, and a center formed on a raceway formed therebetween. It is provided with a port 13 and the like that are arranged at an angle from the cross section including C, and transmits input and output between the inner and outer wheels via rollers.

The one-way rotation transmitting means can be constituted by only the one-way clutch 1 as described above. However, in this example, the intermediate member 14 is provided and the ball spline 15 is provided from the viewpoint of ease of assembly in an actual product. The rotation of outer ring 12 is transmitted to the output side through I'm trying. On the inner ring 11 side, a support shaft portion 1 lb and an input end 11 c are extended. The input terminal 11c is connected to a hand-held rotating machine equipped with a motor. The impact screw tightening head is covered with a casing 5, and the intermediate member 14 and the support shaft 11b are rotatably supported from the casing 5 by two bearings 6a. I have. The eccentric structure 2 includes one end 21 and the other end 22 forming the center C, which is the axis, and an eccentric portion 2 eccentric from the center C by an eccentric amount e to form a central portion of the shaft. 3, an eccentric portion 23 having a center C, is provided with a contact member 24, etc., which comes into contact with the eccentric portion 23 during one rotation around the center C.

As shown in FIG. 1 (b), the one-side shaft end 21 has flat torque transmission surfaces 21a on both sides, and by contact between this surface and the inner surface of the intermediate member 14, On the other hand, clockwise rotation from clutch 1 is transmitted. In this example, the other shaft end 22 has a function of transmitting the input or output torque and only outputting its center C. However, due to the commonality of parts and the like, the one shaft end 2 It has the same structure as 2 1. Depending on the use of the rotation conversion device, the other shaft end 22 may be driven to rotate via the same or another one clutch.

The eccentric part 23 has a ring part 23a as an independent rotating body provided rotatably via a needle bearing or the like outside of the eccentric part 23 in this example. In this example, the contact members 24 are provided as two screws at 180 ° intervals in the upper and lower two places in the figure, and the tips of the screws contact the outer peripheral surface of the ring portion 23 a. I try to make it. In this contact member, the set torque can be adjusted by the degree of advance of the screw, and the position is fixed by the nut 25.

It is desirable that the shaft portion of the eccentric portion 23, the ring portion 23a on the outer diameter side thereof, and the contact member 24 do not slide between each other. Therefore, as shown in this example, the shaft portion and the ring portion 23a are rotatable by a bearing (not shown), and the ring portion 23a and the contact member 24 are merely in a contact state. Alternatively, it is desirable that the contact member is formed of a rotating body such as a roller without providing the ring portion 23a, and the shaft member and the contact member 24 are configured to be capable of contact and relative rotation. The number of the contact members 24 may be one or three or more instead of the total of two at the upper and lower positions in the figure as in this example. The torque transmission unit 3 is connected to the eccentric structure 2. Therefore, it may be connected so as to transmit the converted rotation of either the contact member 24 or the other shaft end 22, but in this example, it is connected to the contact member 24. Then, the inner cylinder 31 to which the contact member 24 is attached, the end member 32 connected to the inner cylinder 31, and the tightening end 32 a serving as an output part that forms a part thereof and outputs a rotational force are formed. Have. The fastening end 32a has a hexagonal hole and is fitted into a nut (not shown) to be fastened.

Reference numeral 26 denotes an intermediate member that holds the center position of the other shaft end 22. Reference numeral 6b denotes a bearing that allows relative rotation between the inner cylinder 31 and the intermediate members 14, 26. Reference numeral 6c denotes a bearing. It is a bearing that rotatably supports the end member 32 from the casing 5.

FIG. 2 is a diagram for explaining the function of the impact screw tightening head.

In the figure, 24 a and 24 b are upper and lower contact members, C is the rotation center of the eccentric body 2, P 0 to P ₄ are virtual positions of the center C, of the eccentric part 23, and the eccentric structure 2 is C The position of C, assuming that there is no deformation when rotated about, that is, the virtual center of the eccentric part 23, Q. ~Q ₃ is P., respectively Virtual outer periphery of the ring portion 2 3 a of the eccentric portion 2 3 corresponding to to P _3, and e is the eccentricity. Hereinafter, the virtual state in which only the lower member 24a is provided as the contact member 24 will be described.

C i is P around C. From the point of reaching to the P, position, the outer circumference of the ring portion 23a is Q. To Q, the state immediately before, but during this time, there is no contact with the contact member 24a at all. Therefore, the eccentric part 23 rotates freely eccentric. When C and are rotated 90 ° to the position, starts to contact the contact member 24a. When the eccentric part 23 further rotates, the center d approaches the contact member 24a, and the outer periphery of the ring part 23a is pushed from the contact member 24a in accordance with the amount, and the eccentric structure 2 is moved. Bendable. For example, assuming that the center d is at the virtual P ₂ position and the virtual outer periphery is at Q ₂ , the outer periphery of the ring portion 23 a is pushed into a position substantially at the center c of the tip of the contact member 24 a, and C, Virtual position P ₂ moves to the actual position of P ₂ ′. Assuming that the pushing amount at this time is 5, the eccentric portion 23 is bent by 5 ο

When the bending amount <5 is generated, the force F received from the contact member 24 a on the outer periphery of the ring portion 23 a is the shaft end portions 21 on both sides forming the simple support state of the eccentric structure 2. If the distance between 2 and 2 is L and the bendability is EI z,

F = 4 8 EI z δ / ³ = Κ δ

(Κ = 4 8 Ε I z / L ₃ )

In

On the other hand, when the distance from the center C of the direction of action of the force F is rotated about the line C one P ₂ 'two s in such Runode, while pressed against the outer periphery of the ring portion 2 3 a to the contact member 2 4 a The counterclockwise resistance moment M applied to the eccentric structure 2

Μ = Κ δ s

Becomes This value can be easily calculated.

The above moment Μ is given by the right rotation torque input from the input end 11 c, which is applied to the front end tightening end 3 2 a via the contact member 24 a, the inner cylinder 31, and the end member 32. Given. At this time, the tightening end 32 a is fitted to the nut of the screw to be tightened, and after all, when the eccentric part 23 is rotated 180 °, the nut is tightened with the torque generated by the moment Μ. Will be. In the rotation of the eccentric part 23, while the contact member 24a is in contact with the outer periphery of the ring part 23a, the position of the contact point does not move, and the ring part 24a The eccentric part 23 rotates by rotating relative to the part.

When the rotation of the eccentric part 23 exceeds 180 °, the moment due to the force F applied to the center C becomes the opposite direction, and the eccentric structure 2 emits the strain energy due to the deformation received so far, and the input It rotates at a higher speed without receiving input from end 1 1c. At this time, the input side rotation is disconnected by the clutch 1 on the other hand. When the eccentric shaft 23 rotates by 270 °, all the strain energy is released, the rotational speed of the eccentric structure 2 becomes maximum, and the rotational kinetic energy determined by the angular velocity and the retained polar inertia moment comes into contact. It is finally given to the nut to be fastened from the fastening end 32a via the member 24a.

FIG. 2B shows the relationship between the rotation angle 0 of the eccentric structure 2 and the generated moment M. In the above, the action of the virtual state when the contact member 24 is only 24 a has been described, but actually 24 a and 24 b are provided, and 24 b is exactly the same as 24 a. Function, and these effects are superimposed. This figure shows this state, and the solid and broken lines are 2 The moment by 4a and 24b is shown.

Contact members 2 4 a is 1 to generate a resistive mode one instrument M of the left rotation between the rotational angle 9 0 ° ~1 8 0 ° with P ₃ to the eccentric structure 2, from P ₃ to P ₄ to 8 A clockwise acceleration moment of 1 M to the eccentric structure 2 is generated between 0 ° and 270 °. As a result, the rotational energy of the eccentric structure 2 is the impact torque Me other screwing from P ₄ position of the rotational angle 2 7 0 °. On the other hand, in the contact member 24b, exactly the same action occurs with a 180 ° phase shift from 24a. Then, the impact torque for screwing from a position shifted by 1 8 0 ° phase from the P ₄ position is added.

The maximum value of the impact torque is Mm, and As the rotation angle at the reach until the Mm from P ₄ is about 4 5 °, and the position of P ₄ have rotational speed becomes the maximum Since the time to reach Mm is very short, torque will be impulsively applied.

In the above description, an example is shown in which the amount of protrusion y of the contact member 24 is set to be the same as the amount of eccentricity e and two places 180 ° apart from each other.For example, the amount of protrusion is set to 2 e Other settings are also possible depending on the usage conditions, such as one location or three locations with one 3e. Also, in Fig. 1, the case where the outer ring portion 23a of the eccentric portion 23 is cylindrical is described, but a curved surface that is optimal for the required rotation and torque characteristics, such as a cam shape, can be used. It is.

FIG. 3 shows a configuration example of a torque distribution device as another application example of the rotation conversion device. This device converts the right-rotation torque intermittently input from the right-hand drive side in the figure and outputs it to the left-most load side in the other figure, which is a one-way rotation transmission means. It has a ratchet 4, an eccentric structure 2, a torque transmission unit 3, and the like. The ratchet 4 is composed of an outer case 41, a bolted gear 42, a ratchet wheel 43 having a pawl that transmits only clockwise rotation, intermediate members 44, 45, etc. When a clockwise rotation is input, only rotation in that direction is transmitted.

Since the eccentric structure 2 has a structure similar to that of FIG. 1, the same numbers are given to the respective portions, and the description will be omitted.

The torque transmission unit 3 is connected to the eccentric structure 2 so as to transmit the converted rotation. In this example, the torque transmission unit 3 is connected to the other shaft end 2 2 ′, and outputs an intermediate output that outputs the rotational force. It is composed of a member 33 and an output end 32 '. In this example, since the inner cylinder 31 in FIG. 1 does not constitute a torque transmission unit, it is indicated by reference numeral 27. Contact member 24 is handle

The position can be adjusted with 2 5 '. In this example, two contact members 24 are provided, one in the top and bottom in the figure, but one or three or more may be provided as in the case of FIG. Reference numeral 7 denotes a frame for mounting the torque distribution device.

FIG. 4 is an explanatory diagram of the operation of the torque distribution device of the present example.

For example, assume that an intermittent torque as indicated by M in the figure is input to the outer case 41 of the ratchet 4 on the input side. This torque varies between 45 ° and 1

The torque is close to the torque when depressing the bicycle pedal within a range of about 35 °. It is assumed that this torque is somewhat larger than the maximum torque Mm shown in Fig. 2 (b) ο

On the other hand, in the torque distribution device of the present example, if the other shaft end 2 2 ′ rotates freely, the action between the contact member 24 and the eccentric structure 2 is the same as that of the device of FIG. As shown in Figure 2. This state is also shown in FIG. 4 by the same solid and dashed curves as in FIG. 2 (b). In Fig. 4, torque is added to this. In the actual device, the position of the contact member 24 and the position of the pedal are adjusted.

From the above, in the figure, M of the applied torque is the resistance torque caused by the non-rotating contact member 24 in the present example, so that the output end 3 2 ′ is indicated by a vertical line minus this. Torque is transmitted. On the other hand, 1M indicated by a vertical line is torque stored as strain energy in the eccentric structure 2, and is transmitted from the other shaft end 22 to the output end 32 and collected. Therefore, the torque having the absolute value of the magnitude indicated by the vertical line is transmitted to the output terminal 32 ′, and the wheel is rotated. As a result, the square intermittent torque can be converted into a dispersed torque as indicated by a vertical line.

O

If such a torque distribution device is applied to a bicycle, when a torque of about 90 ° width is applied to the pedal at a pitch of 180 ° between the right foot and the left foot, the torque is applied even when the torque is not applied by the foot. You can generate and proceed with the bicycle. As a result, the thrust of the bicycle is made uniform, and the power of the foot can be used efficiently. It also prevents the bicycle from wandering due to a drastic decrease in the traveling speed when the pedal is not stepped on a slope, etc. Can be easily climbed.

As shown by a two-dot chain line in FIG. 3, a ratchet 34, for example, is provided on the output side as one-way rotation transmitting means, and a flywheel 35 is attached to this, and the end member 36 is driven via this. You may make it.

Fig. 5 shows an example in which the rotation conversion device is applied to a gearbox with a torque limiter together with Fig. 3, and the device shown by the solid line in Fig. 3 is used together with the flywheel 35, etc. shown by the two-dot chain line in Fig. 3 as well. In the example, the torque limiter part 8 and the like are attached. That is, similar to the ratchet 4 that is the one-way rotation transmitting means, the ratchet 34 that is the second-direction rotation transmitting means and the other shaft end 22 ′ that is the rotation output means are the same as those of the present embodiment. A final output terminal 87 for finally outputting the converted rotation is provided as the second rotation output means coupled to the shaft end of the eccentric structure 84 having a torque limiting action. Note that the torque limiting portion 8 is not essential when a mechanism that performs a braking action is provided on the load side.

The end member 36 includes an outer cylinder 81, an inner cylinder 82, an intermediate member 83, an eccentric structure 84, a setting member 85 for setting a limit torque, a thrust bearing 86, and a final output end 87. , Bearings, etc. These members are the same as the members described with reference to FIG. 1 and the like, and a detailed description thereof will not be repeated.

This gearbox with a torque limiter operates as follows.

When a right rotation torque is input from the driving means such as a motor via the ratchet 4 in the portion of FIG. 3, a torque as shown in FIG. 4 is generated, and when the load side torque is smaller than the drive side torque, The flywheel 36 is accelerated in the energy recovery portion of M, the eccentric structure 84 is rotated via the ratchet 34 and the end member 36, and the setting member 85 is passed through the inner cylinder 82 via the inner cylinder 82. Rotate the final output terminal 87 with the set torque.

In this case, since the final output side including the flywheel 36 and the eccentric structure 2 are connected by the ratchet 34 that forms a one-way clutch, the rotation of the final output side is in the speed increasing process and this part Even if the speed is already higher than the input rotation speed to the eccentric structure 2, the eccentric structure 2 accelerates the final output side with a torque of 1 M and enters the input process from the input side. Is small enough to easily contact the contact member 24 and receive a resistance moment. , The input torque is supplied, and 1 M of accelerating torque generating energy can be stored again. As a result, when the load torque is small, the output-side speed increasing process can be repeated to a certain limit while the output-side rotational speed exceeds the input-side rotational speed.

When the load torque applied to the final output terminal 87 is larger than the set torque, it corresponds to a slip between the setting member 85 and the eccentric structure 84 (actually, between the eccentric portion and the outer ring portion). Relative rotation occurs, and the rotation speed on the load side is reduced so that the load torque becomes lower than the set limit torque.

On the other hand, when the load torque is somewhat large within the limit torque, the load is driven by the torque, the rotation speed of the flywheel 36 is also reduced to some extent, and the operation is continued at the inevitable balanced rotation speed and torque. You. Therefore, according to such a gearbox with a torque limiter, even if the driving side has a constant speed, the load torque is light, and sometimes the speed can be increased to an arbitrary speed without intervening gears. In addition to normal loads such as vehicle wheels and ship propellers, if the torque increases by a certain amount due to the speed increase, this should be increased to automatically maintain the safety of the equipment. Can be. In this case, by adjusting the contact amount of the contact member of the torque storage means as described below, it becomes possible to change the speed increase ratio or to reduce the output side in relation to the load torque.

Fig. 6 shows an example of the configuration of the governor.

Fig. 5 shows an example in which the torque limiting section 8 with the setting member 85 set at a fixed position is provided. However, if the setting position of the setting member 85 can be adjusted, the final output terminal 8 7 Governor that changes the speed of the vehicle. Governor device of the present embodiment shown in FIG. 6-9, the fixed portion support arm 9 1 fixed, to which centered on the center C ₂ is rotatably supported a shaft 9 2, arrows to rotate it Operation link 93 with an operating lever 9 3a that is moved in the direction, a movable arm 9 4 provided on both sides of the outer cylinder 8 1 and swung by the rotation of the shaft 92, and thereby the center C direction Reciprocating lever 95 with the other end 95a, reciprocating at the other end, outer case 96a, inner case 96 of outer bearing 96, which is screwed to the other end 95a and moved in the direction of the arrow Outer case 97 a of inner bearing 97 mounted on bolt 96 fixed to b 96 c, inner case 97 b, this And an adjusting ring 98 having a contact surface 98a extending from the contact member and contacting the top of the setting member.

According to the governor, by operating the operation lever 9 3 a, the direction of the radial center C ₃ finally setting member 8 5 through an intermediate mechanism, i.e. the eccentric portion 2 3-ring part 2 The amount of protrusion to 3a can be adjusted arbitrarily. As a result, the rotation speed of the output end 87 can be adjusted with respect to the rotation speed of the eccentric part 23 on the input side. That is, for example, when the input side rotates at a constant rotation speed, this rotation is transmitted to the output terminal 87 via the setting member 85 as it is, and the rotation is performed in a state in which the load torque applied thereto is balanced. When lowering the rotation speed on the output side, the adjustment ring 98 is moved rightward in the figure by the operation lever 93 to reduce the amount of the setting member 85 that is pushed. As a result, the limit torque transmitted from the drive side decreases, becomes smaller than the load torque, and a relative rotation occurs between the setting member 85, and thus the outer cylinder 81 and the eccentric part 23, and the output side rotation speed Will go down.

On the other hand, when increasing the limit torque, the amount of protrusion of the setting member 85 is increased. As a result, the torque transmitted from the drive side to the output side and the load increases, and if the load torque does not increase any further, the relative rotation between the outer cylinder 81 and the eccentric portion 23 stops. The output side also rotates at the same speed as the drive side. If the load torque further decreases in this state, the rotation of the flywheel 36 on the drive side increases, and eventually the output side can be accelerated.

FIG. 7 shows a mechanism principle portion of another configuration example of the torque storage means.

The torque storage means may be any as long as it can repeatedly generate and release torque during one cycle (one rotation). For this purpose, in this example, elasticity is imparted to the contact member 24 side with respect to the eccentric structure 2 shown in FIG. 1, and the torque of the eccentric structure is changed by a change in the elastic force.

In this example, the same eccentric structure as in FIG. 1 can be used. Further, the eccentric portion 23 may be more eccentric in a crank shape. In this example, the eccentric structure 2 is almost rigid, and the contact member 24 is an elastic member urged by the panel 24a and guided by the case 24b. Structure 2 accumulates and releases torque. In this example, the center of the eccentric part 23 is P, From P. The outer circumference of the ring portion 23a is Q, to Q. Accumulating torque between, P ₃ from P 0, Q. Releasing torque between Q ₃ from.

In this case, the torque M when the center of the eccentric part 23 is at the position P _{2 at an} arbitrary angle is similar to the case of FIG.

M-F s

It is. F in this case is the spring force of the spring 24a. Even such a contact member exhibits the same operation and effect as that of FIG. 1 and can be used for similar purposes. Note that the contact member 24 may be a member such as an elastic ring. Industrial applicability

As described above, the present invention provides a non-existent rotation conversion device capable of converting input rotation into various forms related to speed and torque. That is, it is possible to convert an arbitrary rotation in one direction, which is input as a continuous torque, an intermittent torque or the like, into torque alone, distribute the torque, increase the speed, or convert the rotation into various forms. Further, it is possible to provide a speed increaser having a fixed gear ratio such as a gear. Therefore, the invention has extremely high industrial applicability.

Claims

The scope of the claims

1. A rotation conversion device for converting an input one-way rotation and outputting the rotation, comprising a one-way rotation transmission unit, a torque accumulation unit, and a rotation output unit,

When the one-way rotation is input, the one-way rotation transmitting means transmits only the one-way rotation,

The torque accumulating means is a shaft end on one side and a shaft end on the other side forming a shaft center, and the rotation in the one direction is transmitted from the one-way rotation transmitting unit to at least one of the shaft ends. The rotation output means, comprising: a first shaft end and a second shaft end, an eccentric portion eccentric from the shaft center, and a contact member that makes contact while the eccentric portion makes one rotation about the shaft center. Is connected to the torque storage means and outputs the converted rotation;

A rotation conversion device characterized by the above-mentioned.

2. It has a second direction rotation transmitting means and a second rotation output means,

The second-direction rotation transmitting means is connected to the rotation output means and transmits only the rotation in one direction when the rotation in one direction is input,

The second rotation output means is coupled to the second direction rotation transmission means and outputs the converted rotation;

The rotation conversion device according to claim 1, wherein: