JP4040653B2 - Crank device, vehicle crank pedal device including the same, and vehicle including them - Google Patents

Description

  According to the present invention, an internal rotation gear is pivotally supported on a crank arm, and a reciprocating motion of an input member (pedal) provided on the internal rotation gear in a vertical direction is converted into a rotational motion for rotating the crank arm. The present invention relates to a crank device that extracts a rotational driving force from a rotational force extracting means including a shaft drive system including a bell gear and a drive shaft, a chain sprocket system, etc., a vehicle pedal crank device including the same, and a vehicle including them It is.

Conventionally, a crank pedal device provided on a bicycle converts a rotary motion of depressing the pedal toward the bottom dead center into a rotational motion that rotates the crankshaft via a crank arm, and is wound around a sprocket that is integrally fixed to the crankshaft. The wheel is driven by rotating the sprocket of the wheel by the chain that is hung. However, when the pedal is depressed and rotational motion is applied to the crankshaft, the weight is moved and the pedal is depressed, which may cause the steering wheel to swing and impair the power transmission efficiency of the crank device.

  As a technique devised to solve such a problem, for example, the technique of Patent Document 1 is known. The bicycle pedal crank device described in Patent Document 1 is provided with another sprocket on the sprocket fixed to the crankshaft, and a pair of chains are wound between a pair of upper and lower sprockets provided on the left and right sides, The left and right pedals are attached to and disengaged from the chain tension side, and the driving force is transmitted to the wheels by repeating the operation of depressing the pedals downward from the top so that the vehicle can run.

Japanese Utility Model Publication No. 2-44628

However, even in a bicycle equipped with the pedal crank device described above, the distance between the pedal mounting position and the rotation axis of the sprocket functions as a lever arm. May cause the steering wheel to swing, and the problem of impairing the power transmission efficiency of the crank device has not been solved.

  Therefore, in order to solve such a problem, when the addendum tooth is near the top dead center, the position of the mounting shaft of the input member (pedal) provided on the adder gear is By forming the offset teeth so that they do not exist on the line connecting the centers of the tooth and the crankshaft, the crankshaft is smoothly driven to rotate to extract the rotational force (for example, sprockets or bevels). It is an object (problem) of the present invention to provide a crank device that can be taken out from the shaft) and a vehicle pedal crank device including the crank device.

  In order to solve the above problems, the following measures are taken in the present invention. That is, in the invention according to claim 1, the crankshaft provided rotatably on the fixed member via the bearing portion, the pair of crank arms provided on both sides of the crankshaft, and provided rotatably on each crank arm. A pair of internal gears, a fixed gear that is provided on the fixed member and meshes with the internal gears inscribed in a planetary gear, a pair of driving force transmission means provided on the internal gears, A pair of input members engaged with the driving force transmitting means, and a rotational force extracting means provided integrally with the crankshaft and for extracting the rotational force transmitted from the internal gears to the crank arms as a propulsive force And the number ratio of teeth of the internal gear and the fixed gear is formed so that the internal gear rotates once when the internal gear rotates while rotating the fixed gear. The above drive through the member When a driving force is applied to the force transmission means (at the time of input), a rotational moment is generated in the internal rotation gear with a contact point where the internal rotation gear and the fixed gear mesh with each other as a fulcrum. A configuration for driving was adopted.

In the first aspect of the present invention, an internal rotation gear is provided on a pair of crank arms on both sides of the crankshaft that is rotatably provided in the bearing portion, and the internal rotation gear is meshed with the fixed gear so as to roll. To form. And, the internal gear is set to a gear ratio so that it rotates once during one rotation of the fixed gear, and the input member is engaged with the driving force transmission means provided on the internal gear. When the input member is pushed down from the vicinity of the top dead center to the vicinity of the bottom dead center, a rotational moment is generated in the internal rotation gear by the action of the lever having the contact point between the internal rotation gear and the fixed gear as a fulcrum. As a result, the crankshaft rotates through the crank arm simultaneously with the rotation of the internal gear to the fixed gear, and thereby the rotational driving force can be extracted from the rotational force extracting means. Therefore, the pair of the input member, when rowing alternately left and right (depressing movement), the can thus receive possible to perform a reciprocating motion input member in the vertical direction.

  Further, when the rotational force extracting means is formed not by a winding link mechanism such as a chain or a belt but by a shaft drive system including a bevel gear and a drive shaft, play and sagging of the winding link mechanism does not occur. The rotational force applied to the pedal can be transmitted to the wheels without loss, and energy transmission efficiency can be improved.

  In addition, the crank arms provided on both sides of the crankshaft are formed as arms that extend in the opposite direction with respect to the crankshaft, but instead have no phase angle, that is, extend in the same direction. Needless to say, the arm may be formed in any form, and in short, the direction extending from the crankshaft may be arbitrarily set.

  The invention according to claim 2 relates to the crank device according to claim 1, wherein the driving force transmission means is provided in a slider formed on the input member and the internal rotation gear, and the slider The slider is a line connecting the axis of the internal gear and the axis of the crank shaft regardless of the position of the internal gear. It is characterized in that it is placed in a position deviated from the position and guided in the vicinity of the lowermost part of the trajectory guiding portion.

  According to the invention described in claim 2, in addition to the one described in claim 1, the following action is exhibited. That is, the driving force transmission means is formed by a slider of the input member and a track guiding portion having a shape such as a curved shape, an ellipse shape, a polygonal shape, a straight shape, and the slider is further guided by a track. It always exists in the lowermost vicinity of the part. For this reason, since the slider is located in the lowermost vicinity of the track guide portion, for example, when the inner gear contacts the fixed gear at or near the top dead center, the slider is the inner gear. Will be arranged at a position deviated from the line connecting the shaft center of the crankshaft and the shaft center of the crankshaft. A rotational moment acts on the internal rotation gear so that the internal rotation gear can be easily rolled, and the crankshaft can be smoothly driven to apply a propulsive force.

  The invention according to claim 3 relates to the crank device according to claim 2, wherein the trajectory guide portion is formed in a shape that describes an elliptical, polygonal, substantially linear or curved trajectory. .

  According to the invention of claim 3, the slider of the input member is a track formed of a groove or rail (including a single rail) that defines an elliptical, polygonal, substantially linear or curved track. Since it is present in the vicinity of the lowermost part of the guiding portion, the inner gear is in contact with the fixed gear, and when it rolls, the inner gear is in any rotational angle state. As a result, a rotational moment that smoothly rolls the internal rotation gear can be generated at all times, and the energy applied to the input member can be efficiently converted into a rotational motion to obtain a propulsive force.

  The invention according to claim 4 relates to the crank device according to claim 2, wherein the trajectory guide portion is formed by an inclined groove having a substantially linear shape or a curved shape.

  By adopting such a configuration, the invention described in claim 4 has the following operation in addition to the one described in claim 2. That is, since the slider of the input member exists in the vicinity of the lowermost part of the trajectory guiding portion formed by the inclined groove, the vertical reciprocation of the input member can be efficiently converted into a rotational motion. .

  A fifth aspect of the present invention relates to the crank device according to the fourth aspect, wherein a spring member is provided in the inclined groove, and the slider is allowed to remain in the vicinity of the lowermost portion when input by the spring force of the spring member. It is characterized by that.

  In the invention according to claim 5, the spring force of the spring member provided in the inclined groove urges the slider to always remain in the vicinity of the lowermost portion. In any rolling position, the slider can be present in the vicinity of the lowermost portion of the inclined groove, so that the internal gear can be reliably rolled and the input member can be moved in the vertical direction. Propulsive force can be obtained by efficiently converting the reciprocating motion into a rotational motion.

  The invention according to claim 6 relates to the crank device according to any one of claims 2 to 5, wherein the meshing portion of the internal gear and the fixed gear is covered with a cover so as not to interfere with the outside. It is characterized by covering.

According to the invention described in claim 6, since the internal gear and the fixed gear are covered as a whole by the cover, for example, when the crank device is mounted on a vehicle such as a bicycle, the meshing of both gears is performed. It is possible to prevent stepping stones or the like from biting into the part.

  The invention according to claim 7 relates to the crank device according to any one of claims 2 to 6, wherein the guide means defines the fixed gear to reciprocate the input member in the vertical direction. It is characterized by providing.

According to the invention described in claim 7, since the reciprocating motion of the input member in the vertical direction is defined by the guide means, it is possible to remove the foot from the pedal by avoiding a large movement (displacement) of the pedal due to a sudden brake or the like. For example, when the crank device is mounted on a vehicle such as a bicycle, it is possible to prevent the teeth of the fixed gear and the internal gear from being broken by an external force. .

  The invention according to claim 8 relates to the crank device according to any one of claims 2 to 7, wherein the internal gear is formed in a sprocket shape, and the fixed gear is formed in a chain shape or a pin shape. It is characterized by that.

  According to the eighth aspect of the invention, since the sprocket-type internal gear is formed so as to mesh with the chain-type fixed gear, the engagement between the sprocket and the chain-type or pin-type, that is, the internal-rotation gear And the fixed gear are reliably engaged, and the transmission efficiency of the driving force from the input member to the rotational force extracting means is not reduced.

  The invention according to claim 9 relates to the crank device according to any one of claims 2 to 7, wherein the internal gear is formed in a chain form or a pin form, and the fixed gear is formed in a sprocket form. It is characterized by that.

  According to the ninth aspect of the present invention, the chain-form or pin-form internal gear is formed so as to mesh with the sprocket-type fixed gear, so that the engagement between the chain and the sprocket, that is, the internal gear Engagement with the fixed gear is ensured, and when the driving force is taken out from the input member to the rotational force taking-out means, the transmission efficiency of the driving force is not lowered.

  A tenth aspect of the present invention relates to the crank device according to any one of the first to ninth aspects, wherein the rotational force extracting means is formed of an elliptical sprocket.

  In the invention according to claim 10, the speed change when the pedal is depressed downward can be canceled to obtain an averaged speed.

Next, an invention of claim 11 will be described. The present invention is a vehicle crank pedal device, which is provided with a crankshaft rotatably provided on a vehicle body via a bearing portion, a pair of crank arms provided on both sides of the crankshaft, and freely rotatable on each of the crank arms. A pair of internal gears provided on the vehicle body, a fixed gear provided on the vehicle main body and meshing with the internal gears in a planetary gear, and a pair of driving force transmitting means provided on the internal gears. A pair of pedals engaged with each driving force transmitting means, and a rotational force extracting unit that is provided integrally with the crankshaft and that extracts the rotational force transmitted from the internal gears to the crank arms as a propulsive force. And a gear ratio between the internal gear and the fixed gear so that the internal gear rotates once while rotating the fixed tooth table, and further, through the pedal When a driving force is applied to the driving force transmitting means (at the time of input), a rotational moment is generated in the inner rotating gear with a contact point where the inner rotating gear and the fixed gear mesh with each other as a fulcrum, and the rotational force is extracted. The device is configured to drive the means.

By adopting such a configuration, in the present invention of claim 11, for example, it is adopted in a crank device for a vehicle such as a bicycle, a wheelchair, a hand cycle that travels like a bicycle, a water-lifting boat, a human-powered airplane, etc. As a result, the following effects are exhibited. That is, while providing a pair of internal rotation gears on the crank arms on both sides of the crankshaft rotatably provided in the bearing portion, the internal rotation gears are provided so as to mesh with each other while being inscribed in the fixed gear, The gear ratio is set so that the internal rotation gear rotates once during one rotation of the fixed gear, and the pedal mounting shaft is engaged with the driving force transmission means provided on the internal rotation gear. When pushed down from the vicinity of the top dead center to the vicinity of the bottom dead center, a rotational moment is generated in the internal gear by the action of a lever having a contact point between the internal gear and the fixed gear as a fulcrum. As a result, the crankshaft rotates through the crank arm simultaneously with the rotation of the internal gear to the fixed gear, and thereby the rotational driving force can be extracted from the rotational force extracting means. For this reason, when the pair of left and right pedals are alternately swung left and right (pressing down), the pedals can be reciprocated in the vertical direction. A vehicle crank pedal device can be realized.

  Further, when the rotational force extracting means is formed not by a winding link mechanism such as a chain or a belt but by a shaft drive system including a bevel gear and a drive shaft, play and sagging of the winding link mechanism does not occur. The rotational force applied to the pedal can be transmitted to the wheels without loss, and energy transmission efficiency can be improved.

  In addition, the crank arms provided on both sides of the crankshaft are formed as arms that extend in opposite directions with respect to the crankshaft. Instead, there are no phase angles, that is, the same in the same direction. Needless to say, the arm may be formed, and in short, the direction extending from the crankshaft may be arbitrarily set.

  The invention according to claim 12 relates to the vehicle crank pedal device according to claim 11, wherein the driving force transmitting means is provided in a slider provided on an attachment shaft of the pedal, and in the internal gear. The slider is formed with a track guiding portion that receives and guides the slider, and the slider has an axial center of the internal gear and an axial center of the crank shaft regardless of the position of the internal gear. It is characterized by being placed at a position deviated from a line connecting the two and guided in the vicinity of the lowermost portion of the trajectory guiding portion.

  According to the invention described in claim 12, in addition to the effect described in claim 11, the following action is provided. In other words, the pedal mounting shaft engages with a track guiding portion having a curved shape, an elliptical shape, a polygonal shape, a linear shape, etc., and is always located in the vicinity of the lowermost portion that is biased in the track guiding city. When the driving force acts near the lowermost part of the trajectory guiding part where the mounting shaft of the pedal is located (engaged) with the portion (contact point) where the internal gear and the fixed gear mesh and contact each other as a fulcrum, As a result, a rotational moment acts on the internal rotation gear, the start from the vertical fulcrum is smooth and the rolling is possible in the set direction, the crankshaft rotates, and the propulsive force is exerted on the vehicle via the rotational force extraction means such as a sprocket. And the vehicle can move.

  A thirteenth aspect of the present invention relates to the vehicle crank pedal device according to the twelfth aspect of the present invention, wherein the trajectory guiding portion is formed in a shape that describes an elliptical, polygonal, substantially linear or curved trajectory. Features.

According to the invention of claim 13, when the track guide portion is formed of, for example, a groove or rail (including a single rail), the groove or rail is formed in an elliptical shape, a polygonal shape, or the like. Therefore, since the slider provided on the pedal mounting shaft exists in the vicinity of the lowermost part of the track guide portion, any rotation is possible when the internal gear rotates while meshing with the fixed gear. even in the angle, it is possible to roll the adduction gear always smoothly by the action of a lever, so that wear in the conversion to the smooth rotational movement of reciprocating motion of the pedal.

  According to a fourteenth aspect of the present invention, there is provided the vehicle pedal crank device according to the twelfth aspect, wherein the track guiding portion is formed by an inclined groove having a substantially linear shape or a curved shape.

  In the invention according to claim 14, since the slider of the input member is present in the vicinity of the lowermost part of the trajectory guiding portion formed by the inclined groove, the vertical reciprocating motion of the input member is efficiently converted into a rotational motion. Will be able to.

  A fifteenth aspect of the invention relates to the crank device according to the fourteenth aspect, wherein a spring member is provided in the inclined groove, and the slider is allowed to remain in the vicinity of the lowermost portion when input by the spring force of the spring member. It is characterized by that.

  In the invention according to claim 15, because the spring force of the spring member provided in the inclined groove urges the slider to always remain in the vicinity of the lowermost part, the internal rotation gear is In any rolling position, the slider can be present in the vicinity of the lowermost portion of the inclined groove, so that the internal gear can be reliably rolled and the input member can be moved in the vertical direction. Propulsive force can be obtained by efficiently converting the reciprocating motion into a rotational motion.

  A sixteenth aspect of the present invention relates to the vehicle pedal crank apparatus according to any one of the twelfth to fifteenth aspects, and covers a meshing portion of the inner rotation gear and the fixed gear so as not to interfere with the outside. It is characterized by covering with.

According to the invention described in claim 16, since the internal rotation gear and the fixed gear are covered as a whole by the cover, when the vehicle is a bicycle or the like, a stepping stone or the like is caught in the meshing portion of both gears. Can be prevented .

  Further, the invention of claim 17 relates to the vehicle pedal crank apparatus according to any one of claims 12 to 16, wherein the fixed gear is configured to reciprocate the mounting shaft of the pedal in the vertical direction. The guide means for defining is provided.

According to the invention of claim 17, since the pedal mounting shaft is defined by the guide means to reciprocate in the vertical direction, even if a large external force is applied to the pedal by a sudden brake or the like, the pedal mounting shaft is It can be moved (displaced) along the guide means to prevent the foot from being inadvertently detached from the pedal.For example, even if the bicycle falls and the pedal receives an impact force, It becomes possible to prevent the teeth of the rotating gear from being broken .

  The invention according to claim 18 relates to the vehicle crank pedal device according to any one of claims 12 to 17, wherein the inner rotation gear is formed in a sprocket shape, and the fixed gear is a chain shape or a pin. It was formed in the form.

  According to the invention of claim 18, since the sprocket-type internal gear is formed so as to mesh with the chain-type or pin-type fixed gear, the engagement between the sprocket and the chain, that is, the internal gear Engagement with the fixed gear is ensured, and the driving force input from the pedal mounting shaft to the track guiding portion is efficiently transmitted to the rotational force extracting means.

  The invention according to claim 19 relates to the vehicle crank pedal device according to any one of claims 12 to 18, wherein the internal gear is formed in a chain form or a pin form, and the fixed gear is a sprocket. It was formed in the form.

  According to the nineteenth aspect of the present invention, the chain-form or pin-form internal rotation gear is formed so as to mesh with the sprocket-type fixed gear, so that the engagement between the chain and the sprocket, that is, the internal rotation gear, Engagement with the fixed gear is ensured, and the driving force input from the pedal mounting shaft to the track guiding portion is efficiently transmitted to the rotational force extracting means.

  The invention according to claim 20 relates to the vehicle crank pedal apparatus according to any one of claims 11 to 19, wherein the rotational force extracting means is formed of an elliptical sprocket.

  In the invention according to claim 20, the speed change when the pedal is depressed downward can be canceled to obtain an averaged speed.

The invention according to claim 21 is a vehicle, wherein the vehicle is equipped with the crank device according to any one of claims 1 to 10, and a vertical reciprocating driving force applied to an input member of the crank device is applied to the vehicle. This is characterized in that it is converted into a propulsive force for forward traveling .

In the invention according to claim 21, the vehicle is provided with a crank device, whereby the vertical reciprocating driving force applied to the input member of the crank device is converted into the propulsive force for forward traveling of the vehicle . In addition, 3-wheeled bicycles, 4-wheeled bicycles, boats that step on the water with a pedal crank device, and vehicles for various uses such as training equipment and human-powered aircraft can be used to efficiently rotate the operating force due to reciprocating motion. A vehicle that can be converted into force can be realized.

The invention according to claim 22 is a vehicle, wherein the vehicle is equipped with the crank pedal device for vehicles according to claims 11 to 20, and the vertical reciprocating driving force applied to the crank pedal is used as the propulsive force for forward traveling of the vehicle. It is characterized by being converted .

In the invention according to claim 22, since the vehicle crank pedal device is provided on the vehicle so that the vertical reciprocating driving force applied to the crank pedal is converted into the forward driving propulsion force of the vehicle . In addition, 3-wheeled bicycles, 4-wheeled bicycles, boats that step on the water with a pedal crank device, and vehicles for various uses such as training equipment and human-powered aircraft can be used to efficiently rotate the operating force due to reciprocating motion. A vehicle that can be converted into force can be realized.

  Next, an invention according to claim 23 will be described. The invention according to claim 23 differs from the invention according to claim 1 in that the crank arm, the internal gear, the driving force transmission means, and the input member are connected to the crankshaft according to the invention according to claim 1. Although the structure provided on both sides is different from the structure provided on one side of the crankshaft in the invention according to claim 23, the other structure is common.

  That is, the invention according to claim 23 is a crank device, wherein a crankshaft is rotatably provided on a fixed member via a bearing portion, a crank arm is provided on the crankshaft, and is rotatable on the crank arm. An internal gear provided in the fixed member, a fixed gear which is inscribed in mesh with the internal gear as a planetary gear, a driving force transmission means provided in the internal gear, and a driving force transmission means And an input member engaged with the crankshaft, and a rotational force extracting means provided integrally with the crankshaft and extracting the rotational force transmitted from the internal rotation gear to the crank arm as a propulsive force. The gear ratio between the gear and the fixed gear is formed so that it rotates once when the internal gear makes one rotation while rolling the fixed gear, and the driving force is transmitted via the input member. Drive to means When a force is applied (during input), a rotational moment is generated in the internal gear, with the contact point where the internal gear and the fixed gear mesh with each other as a fulcrum, and the rotational force take-out means is driven. It is characterized by that.

  Therefore, according to the invention described in claim 23, the internal gear is provided on the crank arm of the crankshaft provided to rotate at the bearing portion, and the internal gear is engaged with the fixed gear while being engaged with the fixed gear. The internal gear is set to a gear ratio so that it rotates once during one rotation of the fixed gear, and the input member is engaged with the driving force transmission means provided on the internal gear. Therefore, when the input member is pushed down from the vicinity of the top dead center to the vicinity of the bottom dead center, the rotation moment is applied to the internal rotation gear by the action of the lever that uses the contact point between the internal rotation gear and the fixed gear as a fulcrum. Occurs. As a result, the crankshaft rotates through the crank arm simultaneously with the rotation of the internal gear to the fixed gear, and the rotational driving force can be efficiently extracted from the rotational force extracting means.

  In addition, when the rotational force extracting means is formed not by a winding link mechanism such as a chain or a belt but by a shaft drive system consisting of a bevel gear and a drive shaft, there is no play or sagging of the winding link mechanism. The torque applied to the wheel can be transmitted to the wheels without loss.

  The invention according to claim 24 relates to the crank device according to claim 23, wherein the driving force transmission means is provided in the slider formed in the input member and the internal gear, and the slider The slider is a line connecting the axis of the internal gear and the axis of the crank shaft regardless of the position of the internal gear. It is characterized in that it is placed in a position deviated from the position and guided in the vicinity of the lowermost part of the trajectory guiding portion.

  According to the twenty-fourth aspect of the invention, in addition to the above-described twenty-third aspect, the following action is further exhibited. That is, the driving force transmission means is formed by a slider of the input member and a track guiding portion having a shape such as a curved shape, an ellipse shape, a polygonal shape, a straight shape, and the slider is further guided by a track. It always exists in the lowermost vicinity of the part. For this reason, since the slider is located in the lowermost vicinity of the track guide portion, for example, when the inner gear contacts the fixed gear at or near the top dead center, the slider is the inner gear. Will be arranged at a position deviated from the line connecting the shaft center of the crankshaft and the shaft center of the crankshaft. A rotational moment acts on the internal rotation gear so that the internal rotation gear can be easily rolled, and the crankshaft can be smoothly driven to apply a propulsive force.

  Next, an invention according to claim 25 will be explained. The invention described in claim 25 is greatly different from the invention described in claim 11 in that, in the invention described in claim 11, the crank arm, the internal gear, the driving force transmitting means, and the input member are provided on both sides of the crankshaft. (In the invention of claim 25, it corresponds to a “handle-type pedal”), whereas in the invention of claim 25, in a configuration in which they are arranged on one side of the crankshaft. Is different.

  That is, the invention according to claim 25 is a crank pedal device for a vehicle, wherein the crank body is provided rotatably on the vehicle body via a bearing portion, the crank arm provided on the crank shaft, and the crank arm. An internal rotation gear provided rotatably, a fixed gear provided on the vehicle main body and meshing with the internal rotation gear in a planetary gear, driving force transmitting means provided on the internal rotation gear, and the driving force A handle-type pedal engaged with the transmission means, and a rotational force extraction means provided integrally with the crankshaft and for extracting the rotational force transmitted from the internal gear to the crank arm as a propulsive force; The gear ratio between the internal gear and the fixed gear is formed such that the internal gear rotates once when the internal gear rotates while rotating the fixed gear. When a driving force is applied to the driving force transmitting means via the input (at the time of input), a rotational moment is generated in the inner rotating gear with a contact point where the inner rotating gear and the fixed gear mesh with each other as a fulcrum. It is configured to drive the force extracting means.

  Therefore, according to the invention of claim 25, for example, a hand cycle of a type that travels by driving a handle (hereinafter referred to as a “handle-type pedal”) with a pedal function by giving a pedal function to a handle of a bicycle handle portion. Various vehicles such as (hand bicycles), or hand-held wheelchairs that are mounted on wheelchairs and driven by the wheelchair passengers by driving the handle-type pedals with their own hands, other water-lifting boats, or human-powered airplanes The following actions are exhibited by these.

  That is, an internal rotation gear is provided on a crank arm of a crankshaft rotatably provided at a bearing portion, and the internal rotation gear meshes and rotates while being inscribed in a fixed gear. The gear ratio is set so that it rotates once during one rotation of the fixed gear, and the handle type pedal mounting shaft is engaged with the driving force transmission means provided on the internal rotation gear. , A moment of rotation is generated in the internal gear due to the action of the lever having the contact point between the internal gear and the fixed gear as a fulcrum. As a result, the crankshaft rotates through the crank arm simultaneously with the rotation of the internal gear to the fixed gear, and thereby the rotational driving force can be extracted from the rotational force extracting means.

For this reason, by applying the invention of claim 25 to, for example, a hand-type bicycle, even a driver with poor leg strength can drive the handle-type pedal with the power of his / her hand to obtain the rotational force. The lifting means is driven, and the hand-type bicycle can be easily driven. Note that when the rotational force extracting means is formed not by a winding link mechanism such as a chain or a belt but by a shaft drive system comprising a bevel gear and a drive shaft, there is no play or sagging of the winding link mechanism. The hand force applied to the mold pedal can be transmitted to the wheels of the hand-type bicycle without loss.

  The invention according to claim 26 relates to the vehicle crank pedal device according to claim 25, wherein the driving force transmitting means is provided on a slider provided on an attachment shaft of the handle type pedal, and on the internal gear. And a track guide portion that receives and guides the slider, and the slider is related to the position of the internal gear, and includes a shaft center of the internal gear and the crank. It is characterized in that it is placed in a position deviated from a line connecting the axis of the shaft and guided in the vicinity of the lowermost portion of the trajectory guiding portion.

According to the twenty-sixth aspect of the invention, in addition to the twenty-fifth aspect of the invention, the following action is brought about. That is, the handle-type pedal mounting shaft engages with a trajectory guide portion having, for example, a curved shape, an elliptical shape, a polygonal shape, a linear shape, etc., and is always placed in the vicinity of the lowermost portion biased in the trajectory guide portion. Therefore, when the driving force is applied in the vicinity of the lowermost part of the trajectory guiding portion where the attachment shaft of the handle type pedal is located (engaged), with the portion (contact point) where the internal gear and the fixed gear mesh with and contact with each other as a fulcrum, By the action of the lever, a rotational moment acts on the internal rotation gear so that the internal rotation gear rolls smoothly, the crankshaft rotates, and a hand-type bicycle or A vehicle such as a wheelchair can be moved with a driving force. Therefore, even a driver who cannot sufficiently exert his leg power can easily run a hand-type bicycle or a hand-type wheelchair.

According to the first aspect of the present invention, the internal gears provided on the pair of crank arms on both sides of the crankshaft rotatably provided on the bearing portion are engaged with each other while being inscribed in the fixed gear so as to roll. Since the internal gear is set to a gear ratio such that the internal gear rotates once during one rotation of the fixed gear, and the input member is engaged with the driving force transmission means provided in the internal gear, When the input member is pushed down from the vicinity of the top dead center to the vicinity of the bottom dead center (at the time of input), a rotational moment is generated in the internal rotation gear due to the action of the claws using the contact point between the internal rotation gear and the fixed gear as a fulcrum. As a result, the crankshaft rotates through the crank arm simultaneously with the rotation of the internal gear to the fixed gear, and thereby the rotational driving force can be extracted from the rotational force extracting means. Therefore, the pair of the input member, rowing alternately left and right (depressing movement) time, an effect which is as possible out to cause the reciprocating motion of the pedal in the vertical direction.

  In addition, when the rotational force extracting means is formed not by a winding link mechanism such as a chain or a belt but by a shaft drive system consisting of a bevel gear and a drive shaft, there is no play or sagging of the winding link mechanism. The torque applied to the wheel can be transmitted to the wheels without loss, and the energy transmission efficiency can be improved.

  According to the invention of claim 2, the driving force transmitting means is formed by the slider of the input member and, for example, a trajectory guiding portion having a curved shape, an elliptical shape, a polygonal shape, a linear shape, or the like. In addition, the slider is always placed in the vicinity of the lowermost portion of the track guide portion. For this reason, since the slider is located in the lowermost vicinity of the track guide portion, for example, when the inner gear contacts the fixed gear at or near the top dead center, the slider is the inner gear. Is located at a position deviated from a line connecting the shaft center of the crankshaft and the shaft center of the crankshaft. A rotational moment acts on the rotating gear, so that the inner rotating gear can be easily rolled, and the crankshaft can be smoothly driven to rotate to give a propulsive force.

  According to the invention of claim 3, the slider of the input member is an elliptical, polygonal, substantially linear or curved track, or an elliptical, polygonal, substantially linear or curved rail. Therefore, when the internal gear is rolling while meshing with the fixed gear, the internal gear is in any rotation angle state. However, the effect of the lever can always generate a rotational moment that smoothly rolls the internal gear, and the energy applied to the input member can be efficiently converted into a rotational motion to obtain a propulsive force. Play. In addition, when forming a track | orbit with a rail, it cannot be overemphasized that you may make it form with one rail.

  According to the invention of claim 4, since the track guiding portion with which the sliding hand engages is formed by a substantially linear or curved inclined groove, the slider is in the vicinity of the lowermost portion of the track guiding portion. Therefore, the internal gear is rolled, the vertical movement of the input member can be efficiently converted into rotational movement, and the inclined groove is formed into a groove that is curved substantially linearly or curvedly. There is an effect that the structure of the trajectory guiding portion can be simplified.

  Further, according to the invention of claim 5, since the slider is forcibly placed in the inclined groove by the spring member in the vicinity of the lowermost part at the time of input, any rotation of the internal gear with respect to the fixed gear is performed. Even in the moving position, the slider can be present in the vicinity of the lowermost portion of the inclined groove, so that the internal gear can be reliably rolled and the input member can be efficiently reciprocated in the vertical direction. It has the effect that it can be converted into a rotational motion to obtain a driving force.

Further, according to the invention described in claim 6, since the internal rotation gear and the fixed gear are covered by the cover so as not to interfere with the outside as a whole, for example, when the present crank device is mounted on a vehicle such as a bicycle Has the effect of preventing stepping stones or the like from biting into the meshing portions of both gears.

Further, according to the invention described in claim 7, since the reciprocating motion of the input member in the vertical direction is defined by the guide means, it is possible to avoid a large movement (displacement) of the pedal due to a sudden brake or the like, thereby preventing the foot from the pedal. For example, when the crank device is mounted on a vehicle such as a bicycle, it is possible to prevent the teeth of the fixed gear and the internal gear from being broken by an external force .

  In addition, according to the invention described in claim 8, since the sprocket-type internal gear is formed so as to mesh with the chain-type or pin-type fixed gear, the engagement between the sprocket and the chain, that is, the internal gear And the fixed gear are reliably engaged, and there is an effect that it is possible to avoid the loss of the transmission efficiency of the driving force from the input member to the rotational force extracting means.

  According to the ninth aspect of the present invention, the chain-type or pin-type internal rotation gear is formed so as to mesh with the sprocket-type fixed gear, so that the engagement between the chain and the sprocket, that is, the internal rotation gear, is achieved. When the driving force is taken out from the input member to the rotational force taking-out means, it is possible to avoid a reduction in the transmission efficiency of the driving force.

  Further, according to the invention described in claim 10, in the invention described in claim 10, it is possible to cancel the speed change when the pedal is depressed downward to obtain an averaged speed, and to provide a comfortable and stable depression operation feeling. The effect which can obtain the crank apparatus which has is produced.

Further, according to the vehicle crank device according to the invention of claim 11, when the left and right pedals are alternately swung left and right (push-down movement), the pedals can be reciprocated in the vertical direction. It is possible to obtain a vehicle crank pedal device that can efficiently convert the operating force due to the reciprocating motion into the rotational motion force, and the rotational force extraction means is not a winding link mechanism such as a chain or a belt, but a bevel gear. When formed with a shaft drive system consisting of a drive shaft, there is no play or sagging of the winding link mechanism, so the torque applied to the pedal can be transmitted to the wheels without loss, and energy transfer efficiency The effect which can improve is produced.

  Further, according to the invention of claim 12, the lowermost part of the trajectory guiding portion where the mounting shaft of the pedal is located (engaged) with the portion (contact point) where the internal gear and the fixed gear mesh with and contact with each other as a fulcrum When a driving force is applied at the time of input (during input), a rotating moment is applied to the internal rotation gear by the action of the lever, and the internal rotation gear rolls smoothly, and the crankshaft is driven to rotate so that the sprocket or the like The effect of being able to move by applying propulsive force to the vehicle by the rotational force extracting means.

According to the invention of claim 13, when the track guide portion is formed, for example, in the form of a groove or rail, the groove or rail is formed in an ellipse, polygon, substantially straight line, or curved shape. Therefore, since the slider provided on the pedal mounting shaft is present in the vicinity of the lowermost part of the track guiding portion, any rotation angle when the internal rotation gear rolls while meshing with the fixed gear. in the well, it is possible to roll the adduction gear always smoothly by the action of a lever, an effect that can be converted to smooth rotational movement of the reciprocating motion of the pedal.

  According to the invention of claim 14, since the slider of the input member is present in the vicinity of the lowermost part of the trajectory guiding portion formed by the inclined groove having a substantially linear or curved shape, There is an effect that the reciprocating motion in the direction can be efficiently converted into the rotational motion.

  According to the invention of claim 15, the urging force is applied so that the slider is forcibly placed in the vicinity of the lowermost part at the time of input by the spring force of the spring member provided in the inclined groove having a substantially linear or curved shape. Therefore, regardless of the rolling position of the pedal attachment shaft, i.e., the internal gear, relative to the fixed gear, the slider can be present in the vicinity of the lowermost portion of the inclined groove. The internal rotation gear can be reliably rolled, and the effect that the reciprocating motion of the input member in the vertical direction can be efficiently converted into the rotational motion to obtain the propulsive force can be obtained.

According to the invention described in claim 16, since the inner rotation gear and the fixed gear are covered as a whole by the cover, when the vehicle is a bicycle or the like, clothes, stepping stones, etc. The effect which can prevent biting is produced.

Further, according to the invention of claim 17, since the pedal mounting shaft is regulated to reciprocate in the vertical direction by the guide means, even if a large external force is applied to the pedal by a sudden brake or the like, the pedal mounting shaft is moving (displacement) along the guide means. Further, even if pedal For example receives an impact force, an effect of the teeth of the fixed gear and adduction gear it can be prevented from breakage.

  According to the invention described in claim 18, since the sprocket-type internal gear is formed so as to mesh with the chain-type or pin-type fixed gear, the engagement between the sprocket and the chain, that is, the internal gear And the fixed gear are reliably engaged, and the driving force input from the pedal mounting shaft to the track guiding portion can be efficiently transmitted to the rotational force extracting means.

  According to the nineteenth aspect of the present invention, the chain-type or pin-type internal rotation gear is formed so as to mesh with the sprocket-type fixed gear, so that the engagement between the chain and the sprocket, that is, the internal rotation gear, is achieved. As a result, the driving force input from the pedal mounting shaft to the trajectory guiding portion can be efficiently transmitted to the rotational force extracting means.

According to the invention of claim 20, wherein, to cancel the speed variation when stepping the pedal down can the speed obtained by averaging, the effect capable of improving the operational feeling narrowing seen Stepping.

Further, according to the invention of claim 21, the vehicle is provided with a crank device, whereby the vertical reciprocating driving force applied to the input member of the crank device is converted into the propulsive force for forward traveling of the vehicle . In addition to bicycles, three-wheeled bicycles, four-wheeled bicycles, boats that step on the water with a pedal crank device, training equipment, and human-powered vehicles can be used for various applications, so that the operating force by reciprocating motion can be efficiently used. There is an effect that can realize a vehicle that can be well converted into rotational movement force.

According to the invention of claim 22, the vehicle crank pedal device is provided on the vehicle, whereby the vertical reciprocating driving force applied to the crank pedal is converted into the forward driving propulsion force of the vehicle . In addition to bicycles, three-wheeled bicycles, four-wheeled bicycles, boats that step on the water with a petal crank device, vehicles for training equipment and human-powered vehicles, etc. There is an effect that can realize a vehicle that can be well converted into rotational movement force.

  Further, according to the invention of claim 23, when the input member is pushed down from the vicinity of the top dead center to the vicinity of the bottom dead center, the inner action is caused by the action of the lever having the contact point between the internal gear and the fixed gear as a fulcrum. Since a rotational moment is generated in the rotating gear, the crankshaft rotates through the crank arm at the same time as the inner rotating gear rolls to the fixed gear, and the rotational driving force can be efficiently extracted from the rotational force extracting means to the outside. There is an effect.

  In addition, when the rotational force extracting means is formed not by a winding link mechanism such as a chain or a belt but by a shaft drive system consisting of a bevel gear and a drive shaft, there is no play or sagging of the winding link mechanism. There is an effect that the rotational force applied to can be transmitted to the wheels without loss.

  According to the invention of claim 24, since the slider is located in the vicinity of the lowermost portion of the track guide portion, for example, the inner gear contacts the fixed gear at or near the top dead center. When the slider is placed at a position deviated from the line connecting the axis of the internal gear and the axis of the crankshaft, the portion (contact point) where the internal gear and the fixed gear are in meshing contact with each other By the action of the lever as a fulcrum, a rotational moment acts on the internal gear, the internal gear can be easily rolled, and the crankshaft can be smoothly rotated to give a propulsive force. Play.

  According to the invention of claim 25, when this is applied to, for example, a so-called hand cycle mounted on a normal bicycle or wheelchair, the following action is exhibited.

That is, by moving a handle-type pedal or a manual pedal installed at a location away from the handle, a rotational moment is generated in the internal rotation gear by the action of the lever that uses the contact point between the internal rotation gear and the fixed gear as a fulcrum. Accordingly, adduction gear crankshaft to the rotary motion via the crank arm at the same time rolls in a fixed gear, can be removed from the rotational force retrieval means a rotational driving force to the outside, even poor driver leg strength, By performing a simple operation by simply rotating the handle-type pedal with the power of its own hand, the rotational force take-out means is driven, the hand-type bicycle can be easily traveled, and the rehabilitation effect can be improved.

According to the invention described in claim 26, in addition to the element described in claim 25, the following action is provided. That is, the handle-type pedal mounting shaft engages with a trajectory guide portion having, for example, a curved shape, an elliptical shape, a polygonal shape, a linear shape, etc., and is always placed in the vicinity of the lowermost portion biased in the trajectory guide portion. Therefore, the orbit guide where the mounting shaft of the manual pedal installed at the place away from the handle type pedal or the handle is located (engaged) with the portion (contact point) where the inner gear and the fixed gear mesh and contact each other as a fulcrum When a driving force is applied in the vicinity of the lowermost part of the section, the moment of rotation acts on the internal rotation gear due to the action of the lever, the internal rotation gear rolls smoothly, the crankshaft rotates, and the sprocket It becomes possible to move the vehicle such as a hand-type bicycle or a wheelchair by applying a propulsive force via the rotational force extracting means. Therefore, there is an effect that even a driver who cannot sufficiently demonstrate his / her leg power can easily operate and run the hand cycle.

  The embodiments of the present invention will be described in groups based on FIGS. In addition, suppose that the crank apparatus which concerns on this Embodiment is applied to a bicycle as an example of a vehicle, and it will evacuate as an example. FIG. 1 is an external perspective view showing an outline of a crank device for a bicycle according to the present embodiment as viewed obliquely from the front. In the following, the left side parts and members of the bicycle will be denoted by the symbol L, and those on the right side by the symbol R. In FIG. 1, in order to make it easy to grasp the configuration of the entire apparatus, the driving sprocket 7 is illustrated on the L side.

  First, an outline of the configuration of the crank device will be described. A crankshaft 3 is rotatably supported by a bearing portion 2 of the bicycle body (frame) 1, and the left and right sides of the crankshaft 3 sandwiching the frame 1 are bent and extended in opposite directions within the same plane. There are crank arms 4L and 4R, and internal rotation gears 5L and 5R, which are spur gears having external teeth, are rotatably provided on the crank arms 4L and 4R, respectively. Further, fixed gears 6L and 6R meshing with the internal rotation gears 5L and 5R are fixedly attached to both the left and right sides with respect to the longitudinal axis along the longitudinal direction of the bicycle. These fixed gears 6L, 6R roll while meshing the internal gears 5L, 5R, and the gear ratio between the internal gears 5L, 5R and the fixed gears 6L, 6R is the internal gear 5L, The ratio of the number of teeth that completes one rotation when 5R makes one rotation while rolling the fixed gears 6L and 6R is set to be 1: 2.

  Also, pedals 10L and 10R as input members are rotatably provided on attachment shafts 11L and 11R (hereinafter referred to as “pedal shafts”), and sliders 11L1 and 11R are formed at the tips of the pedal shafts 11L and 11R. . On the side surfaces of the internal gears 5L and 5R, track guide portions 32L and 32R, which are components of the driving force transmission means 30L and 30R, are provided, and the sliders 31L and 31R are engaged.

  The crankshaft 3 in the vicinity of the bearing portion 2 is provided with a driving sprocket 7 (rotational force extraction means) for extracting the rotational force of the crankshaft so as to rotate integrally with the crankshaft 3, and on the wheel side of the bicycle. A driven sprocket 8 is provided, and a chain 9 is wound between the sprockets 7 and 8, and the driving force is transmitted to the driven sprocket 8 via the chain 9 by taking out the rotational force of the crankshaft. That is, when the chain 9 is driven in the direction indicated by the arrow A in FIG. 1, the bicycle travels while propelling forward.

  Next, the structure of the crank device will be described more specifically. That is, as shown in FIGS. 2 to 6, a base plate 1a is fixedly attached to a bicycle frame 1, and a journal, that is, a bearing portion 2 is horizontally welded to a hole formed in the center portion thereof. It is fixed and the crankshaft 3 penetrates. The crankshaft 3 is formed in a stepped shape, a crank arm 4L is fastened to the left side by a bolt 20 and a crank arm 4R is joined to the right side by welding. The left crank arm 4L may be welded by welding. These left and right crank arms 4L, 4R bend and extend in opposite directions in the same plane.

  Shaft members 5L1 and 5R1 are fixed to the crank arms 4L and 4R so as to be oriented horizontally, and an internal gear 5L and an internal gear 5R having spur teeth rotate through space washers 5L2 and 5R2. Can be attached freely.

  Also, fixed gears 6L and 6R are arranged on the left and right sides of the base plate 1a in parallel with the base plate 1a. The fixed gears 6L and 6R are internal gears having spur teeth, and are fixed to both sides of the base plate 1a by inserting bolts 22 into the four spacers 21L and 21R arranged on the left and right. The left and right internal gears 5L and 5R are incorporated in these left and right fixed gears 6L and 6R so as to be inscribed and meshed with each other. In this case, the gear ratio between the internal gears 5L and 5R and the fixed gears 6L and 6R is such that the internal gears 5L and 5R rotate once when rotating around the fixed gears 6L and 6R. It is set to a number ratio, that is, a relationship of 1: 2. Thus, when the internal gears 5L and 5R roll the fixed gears 6L and 6R, they move in a positional relationship that is point-symmetric with respect to the crankshaft 3, as shown in FIG.

  Next, the driving force transmission means 30L and 30R will be described. That is, the driving force transmission means 30L and 30R are formed by the sliders 31L and 31R formed on the pedal shafts 11L and 11R and the track guide portions 32L and 32R provided on the internal rotation gears 5L and 5R. The track guide portions 32L and 32R are attached to the side surfaces of the internal rotation gears 5L and 5R by screws B. The track guide portions 32L and 32R are formed with elliptical guide grooves 34L (the guide grooves on the right side are not shown, so the reference numerals are omitted), and the sliders 31L and 31R are slidably received. . The driving force applied to the pedals 10L and 10R is formed so as to be transmitted to the internal gears 5L and 5R via the sliders 31L and 31R and the guide groove 34L. Further, as shown in FIG. 3, when the pedals 11L and 11R are at or near the top dead center, that is, when the internal rotation gears 5L and 5R are at or near the top dead center with respect to the fixed gears 6L and 6R. The pedal shafts 11L and 11R are set so as to be always biased to the rear side with respect to a line L along the substantially vertical direction connecting the shaft centers of the internal rotation gears 5L and 5R and the shaft shaft of the crankshaft 3. .

  A specific structure of the trajectory guide unit will be described by taking the left trajectory guide unit 32L as an example. 4 and 5, the first member 33L in which the elliptical guide groove 34L is formed, and the second member 35L provided so as to cover the first member 33L via the screw 34L are provided. Thus, the first member 33L and the second member 35L form a guide groove 34L inside. The left trajectory guiding portion 32R is formed in the same manner.

  The pedal 10L as an input member is provided so as to be rotatable with respect to the mounting shaft 11L, that is, the pedal shaft 11L. A pin-shaped slider 31L is provided at the end of the pedal 11L, and engages with the guide groove 34L. . When the slider 31L is stuck in the guide groove 34L of the internal gear 5L, it always remains at the lowest position of the guide groove 34L, and thereby the pedal 11L at or near the top dead center. It will function as an input point when stepping on. Further, when the slider 31L is positioned at the input point in this way, a line L (crank 3) connecting the shaft center P1 of the internal rotation gear 5L and the shaft center P2 of the crankshaft 3 shown in FIG. It is offset to a position deviated from the vertical center line that passes. This offset direction is offset to the right of the line L in FIG. 3, that is, backward with respect to the traveling direction of the bicycle.

  Therefore, when a foot treading force (operating force) is applied from the top to the bottom with respect to the pedal shaft 11L in the state shown in FIG. 3, the meshing portion of the internal rotation gear 5L and the fixed gear 6L, That is, the contact is a fulcrum of the lever, and the distance between the contact and the slider 31L is the length of the lever, and the inner rotation gear 5L is rotated clockwise (spinned) by the action of the lever, The internal gear 5L rolls in the direction of arrow X (counterclockwise) while meshing with the fixed gear 6L.

  In addition, by using such a mechanism, the pedal speed when the pedal is depressed and moved downward is the length from the contact point where the gear meshes to the slider 31L (the length of the lever arm). It becomes the size according to the change of (a).

  On the other hand, the pedal shaft 11R of the right pedal 10R is also passed through the guide groove (not shown) of the track guide portion 32R having the same structure as the track guide portion 32L in the internal rotation gear 5R in the same manner as the left pedal 10L. Engaged.

  The crank 3 between the base plate 1a and the right fixed gear 6L is provided with a driving sprocket 7 for extracting rotational force so as to be able to rotate integrally with the crankshaft 3, and a chain 9 (see FIG. 1). ) To be coupled to a driven sprocket on the wheel side (reference numeral 8 in FIG. 1).

  Thus, the crank device is manufactured as shown in FIG. 2 by sequentially assembling the above-described components as shown in the exploded perspective view of FIG. In FIG. 6, reference numeral 23 denotes a push nut that is press-fitted into the shaft ends of the shaft members 5L1 and 5R1 to attach the internal rotation gears 5L and 5R to the shaft members 5L1 and 5R1. Omitted.

  Next, the operation of the pedal crank device for a bicycle provided with the crank device of the present embodiment will be described with reference to FIGS. 7, 8, and 9. FIG. FIG. 7 shows that the sliders 31L and 31R provided at the shaft ends of the pedal shafts 11L and 11R have the guide grooves 34L provided in the left and right inner rotation gears 5L and 5R, too, and the bottom dead center from the vicinity of the top dead center. It is action explanatory drawing which drew the movement locus | trajectory until. The solid line indicates the movement locus of the left internal rotation gear 5L, and the dotted line indicates the movement locus of the slider 31R of the right internal rotation gear 5R on the opposite side.

  Of the pedals 10L and 10R of the bicycle, as shown in FIG. 8, for example, in the case where the left pedal 10L is left at or near top dead center, the internal gear 5L has a slider 31L of the pedal 11L. Then, a rotational force that rotates clockwise (rotates) by the action of the lever acts through the guide groove 34L. Then, the internal rotation gear 5L rolls (revolves) in the direction of arrow C while meshing with the fixed gear 6L. When the internal gear 5L rolls at or near the bottom dead center, the relative positional relationship between the slider 31L and the guide groove 34L is as shown in FIG. When the internal rotation gear 5L comes to or near the bottom dead center, the right internal rotation gear 5R on the opposite side moves to the top dead center or the vicinity thereof and rises. When the right pedal 10R is stepped in the same way as when the left pedal 10L is strung, the stepping force acting on the pedal 10R is transmitted from the slider 31R of the pedal shaft 11R via the guide groove of the driving force transmitting means 30R to the internal rotation gear. Transmitted to 5R.

  Thus, as shown in FIG. 7, regardless of the rolling position of the internal gears 5L, 5R with respect to the fixed gears 6L, 6R, the sliders 31L, 31R always have guide grooves 34L, Since it is located at the lowest position with respect to 34R, by alternately stepping in the left and right pedals 10L, 10R that reciprocate in the vertical direction, each internal gear 5L, 5R The fixed gears 6L and 6R roll while meshing with the action of the child, the crankshaft 3 as the output shaft rotates, and the rotational driving force is transmitted from the driving sprocket 7 to the driven sprocket 8 via the chain 9. Thus, the wheels can be driven to generate a propulsive force so that the vehicle can travel forward.

As described above, according to the present embodiment, when pedaling a bicycle, the movement trajectories of the sliders 31L and 31R of the pedal shafts 11L and 11R that are the mounting shafts of the pedals 10L and 10R are shown in FIG. Thus, when each internal gear 5L, 5R rolls at or near top dead center, each slider 31L, 31R exists at a position that does not become a thought point (dead center), and each The sliders 31L and 31R reciprocate on a trajectory along a substantially vertical direction. Therefore, pedals 10L, only able to transmit rotational motion to the drive sprocket 7 a circularly sliding reciprocating 10R vertically, it is possible to effectively reduce the driving force loss of the bicycle.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and even if there is a design change or the like without departing from the gist of the present invention, the present invention is not limited to this embodiment. It is included in the scope of the invention.

  That is, the crank device according to the above embodiment has been described as applied to a bicycle. In addition to a bicycle, a three-wheeled bicycle, a four-wheeled bicycle, a boat that steps on the water with a pedal crank device, and a training equipment tool Crank pedal devices for vehicles used for various types of vehicles such as aircraft and human-powered airplanes, as well as those vehicles equipped with these crank devices and vehicle crank pedal devices so that they can be stepped forward and stepped forward. Of course, it can be done.

  In the crank device according to the above embodiment, the components (parts) shown in FIG. 2 and FIG. 6 are formed and these parts are assembled, but in the implementation, other components (parts) are used. Needless to say, it can be configured and assembled.

  Further, in the present embodiment, a case has been described in which the sliders 31L and 31R are fitted in the guide grooves 34L and 34R, but instead, as shown in FIG. Alternatively, an elliptical guide rail 40 may be attached, and a slider 41 that slides on the guide rail 40 may be engaged. In this case, the slider 41 is configured so that the pedal shafts 11L and 11R are rotatably attached. As a result, the slider 41 slides in a state in which it is located in the vicinity of the lowermost portion of the guide rail 40, and the internal rotation gears 5L and 5R can be rolled.

  Further, in the above, the trajectory guide portions 32L and 32R are formed by the elliptical guide groove 34L and the guide rail 40, but instead, a form of a single rail having a substantially linear shape or a curved curve shape. It may be configured by.

  Further, as shown in FIG. 11, the guide groove having a substantially straight inclined groove 50 may be formed, and the track guide portion 51 having the inclined groove 50 may be attached to the internal gear 5. Good. In this case, the spring 52 is housed in the inclined groove 50 in a contracted state, and a spring force is applied so that the sliders 31L and 31R at the time of input are placed in the vicinity of the lowermost position. As a result, the sliders 31L and 31R always connect the line L (the crankshaft 3) connecting the axis P1 of the internal gear 5 and the axis P2 of the crankshaft 3 regardless of the rolling position of the internal gear 5. It can be offset to a position deviated from the vertical center line passing through (see FIG. 3).

  In addition, the guide groove formed in the trajectory guiding portion may be formed in a curved shape that draws a curve, instead of being formed in a substantially linear shape as in the above-described modified example shown in FIG. Good.

  Further, as shown in FIG. 11, the spring 52 as the spring member is provided in the inclined groove 50, but the spring 52 may not be provided.

  Therefore, with such a configuration, as shown in FIGS. 12 to 14, the sliders 31L and 31R are disposed in the vicinity of the lowermost portion of the inclined groove 50 of the track guiding means 51, while the internal gears. 5 meshes with the fixed gear 6 and rolls. At this time, the internal rotation gear 5 rolls (revolves) the fixed gear 6 in the counterclockwise direction and itself rotates in the clockwise direction, and the sliders 31L and 31R are shown in FIGS. Draw a movement trajectory as shown in Figure 14, and move from top dead center to bottom dead center. As a result, this modified example also has the effect of being able to perform driving force transmission with less wobbling, as in the above embodiment.

Further, as in the modification shown in FIG. 15, for example, in order to prevent the meshing state between the internal rotation gear 5L and the fixed gear 6L from being seen from the outside, the internal rotation gear 5L and the fixed gear 6L as shown by a two-dot chain line. It is also possible to form so as to attach a cover 70 covering the. In this case, the cover 70 is attached to the fixed gear 6L side, but as a result, the cover 70 may be a bicycle or the like if it is provided so that pebbles and clothes do not bite into the meshing portion of the two gears 5L and 6L. You may form so that it may attach to a vehicle body. Therefore, according to this modification, it is possible to prevent stepping stones or the like from biting into the meshing portions of both gears 5L and 6L.

  Further, in this case, instead of the cover 70, as shown by a two-dot chain line in FIG. 15 (b), on the outside of the internal rotation gear 5L, an inner plate slightly larger than the outer diameter of the internal rotation gear 5L. The cover 701 can be integrally attached in a concentric arrangement relationship, and as in the case of FIG. 15 (a), the engagement between the internal gear 5L and the fixed gear 6L is long and in a good state. Will be able to hold on.

As another modified example, in FIG. 15, a guide 71 made up of two rod members arranged along the vertical direction is attached to the fixed gear 6, and an attachment shaft (pedal) of a pedal as an input member is attached to the guide 71. It is also possible for the shaft 11L to define a reciprocating motion in the vertical direction. According to this modification, the this avoid large movement of the pedal by the sudden braking, etc. (displacement) can, by an external force the pedal shaft 11L is subjected to an external force, the teeth of the fixed gear 6L and adduction gear 5L that breakage Can be prevented . Of course, instead of providing the guide 71 alone, a slit having a guide function may be provided in the cover 70 so as to be directed in the reciprocating direction, thereby guiding the pedal shaft 11L in the vertical direction.

  In the above embodiment, a case has been described in which the rotational force extracting means is formed by a winding link mechanism formed by winding the chain 9 around the driving sprocket 7 and the driven sprocket 8. As schematically shown in FIG. 16, it is possible to adopt a structure in which power is transmitted by a shaft drive system. That is, instead of the driving sprocket 7, a bevel gear 81 is attached to the crankshaft 3 so as to be integrally rotatable, a bevel gear 82 is provided instead of the driven-side vehicle sprocket 8, bevel gears 83 are provided at both ends instead of the chain 9, In this structure, a drive shaft 85 having 84 is provided. As a result, when the driving force transmitted from the crank arm 4 to the crankshaft 3 is transmitted from the bevel gear 81 to the bevel gear 83 of the drive shaft 85, the bevel gear 84 of the drive shaft 85 meshes with the bevel gear 82, respectively. As a result of this construction, there is no slack as in the case of the chain 9, and the force of stepping on the pedal 10 can be efficiently converted into rotational motion and transmitted to the driven side.

  Further, in the above embodiment, the case where the fixed gears 6L and 6R formed by cutting spur teeth as the fixed gear has been described, but instead of the fixed gear 60 shown in FIGS. It is also possible to adopt an aspect of a meshing device in combination with the rolling gear 5. The meshing device is provided on the left and right of the vehicle frame such as a bicycle, as in the above embodiment. However, for the sake of convenience, the meshing device on either side will be described below as a representative. I will do it.

  That is, as shown in FIG. 17 (a), the fixed gear 60 is provided by arranging a plurality of pin members 60b between a pair of ring plate-like base portions 60a, or the fixed gear shown in FIG. 17 (b). As in 61, a pin member 61b protruding in a cantilever shape from one ring plate-like base 61a is disposed and provided so as to have a substantially chain function. In this case, these pin members 60b may be roller-shaped pins that rotate relative to the ring-shaped substrate portion 60a to reduce mechanical friction. Then, the internal rotation gear 5 that rotates while meshing with the inside of the fixed gear 60 or the fixed gear 61 can be formed in the form of a sprocket as shown in FIG. As a result, the meshing device is configured by meshing the chain form and the sprocket form, and the pedal depression force can be transmitted smoothly as in the above embodiment. In this case, it goes without saying that the chain may be directly attached to the fixed gear 60.

According to this modification, the meshing device, since the form in engagement form of a chain-and-sprocket, gravel or the like can be prevented from biting engagement of the chain forms sprockets form during traveling, it was or In addition, an internal gear or a fixed gear can be formed at low cost, and a crank device, a vehicle, and the like that are reduced in weight can be obtained.

  As another modification of the meshing device, as shown in FIG. 19, the fixed gear is formed as a fixed gear 62 in the form of a sprocket having sprocket teeth 62a, and an internal rotation gear that rotates inside the fixed gear 62. As a modification example, it is possible to form a chain-shaped internal gear 63 provided with pin-shaped teeth 63a meshing with the sprocket teeth 62a. In this case, as a matter of course, a mode in which the chain is directly provided on the internal gear 63 may be adopted.

According to this modification, the meshing device, since the form in engagement form of a chain-and-sprocket, gravel or the like can be prevented from biting engagement of the chain forms sprockets form during traveling, it was or In addition, the internal gear or the fixed gear can be formed at a low cost, and a crank device, a vehicle, and the like with reduced weight can be obtained.

Further, in the above embodiment, the driving sprocket 7 as the rotational force collecting means has a circular shape, but it is also possible to use an elliptical sprocket instead. According to this modification, to cancel the speed variation when stepping the pedal down can the speed obtained by averaging, it becomes possible to you to improve the depressed feeling.

  Further, in the above embodiment, a case has been described in which the crank device is incorporated into a normal type bicycle main body (frame) 1 in which the pedal is pedaled with the stepping force of the foot, but instead of the modification shown in FIG. As described above, the hand cycle unit 902 is detachably attached to the wheelchair unit 901, or the hand cycle unit 902 is fixedly attached to the frame 903 of the type of the hand cycle 900 formed by attaching the hand cycle unit 902 to the hand or arm. It is also possible to drive with the force of. That is, in this modified example, the crank arms on both the left and right sides of the crankshaft are extended in the same phase angle direction, that is, in a symmetric arrangement configuration, and the handle type pedal corresponding to the pedal 10 of the above embodiment is provided at the tip thereof. The other configuration is the same as that of the above embodiment. In such a modification, when the handle type pedal 905 provided with the pedal function is driven with the left and right hands, the driving force rotates the internal rotation gear, via the chain 906 which is a rotational force extracting means such as the chain 906. The front wheel 907 can be driven and the hand cycle 900 can be run.

Therefore, according to the above-described modification, the rider of the wheelchair unit 901 can easily travel the hand cycle 900 by a simple operation of driving the handle type pedal 905 by hand. As well as being able to drive while suppressing energy loss, a driver with poor leg strength can easily operate the hand cycle, which in turn contributes to muscle training and physical strength improvement.

  In the above modification, the handle type pedal 905 is provided symmetrically with respect to the hand cycle body, and the left and right are driven simultaneously. However, the handle type pedal is provided only on one side for driving. Needless to say, it is also possible to use the form.

  In addition, the hand cycle can be applied not only to the wheelchair type hand cycle applied in the modified example but also to a normal bicycle type hand cycle.

It is the external appearance perspective view which showed the outline | summary of the structure of the mechanism of the crank apparatus of the bicycle in this Embodiment typically. 1 is a front view showing a part of a pedal crank device for a bicycle according to the present embodiment in a sectional view. FIG. 3 is a left side view of FIG. FIG. 4 is an enlarged side view of a main part in the IV part of FIG. 5A and 5B are explanatory views of a trajectory guiding unit, in which FIG. 5A is a cross-sectional view taken along the line VV in FIG. 4, and FIG. FIG. 3 is an external perspective view illustrating assembly and disassembly in the pedal crank device of FIG. It is action explanatory drawing which showed the movement locus | trajectory of the pin part in rolling between 195 degree | times at 15 degree intervals from the top dead center vicinity. It is principal part expansion effect explanatory drawing which shows the relative positional relationship of the internal rotation gear in the vicinity of a top dead center, a fixed gear, and a pin part. It is principal part expansion operation explanatory drawing which shows the relative positional relationship of the internal-rotation gearwheel in the vicinity of a bottom dead center, a fixed gearwheel, and a pin part. It is an expanded sectional view in the modification of a track guidance means. It is a principal part side view in another modification of a track | orbit guide means. FIG. 10 is an operation explanatory diagram for explaining the movement locus of the pin portion every 45 degrees of the internal rotation gear according to another modified example. FIG. 13 is also an operation explanatory view for explaining the continuation of the movement locus shown in FIG. 12 according to another modified example. FIG. 14 is also an operation explanatory view for explaining the continuation of the movement locus shown in FIG. 13 according to another modified example. Similarly, it is a general | schematic external appearance perspective view in another modification of this Embodiment. It is the schematic plan view which showed typically another modification. It is an external appearance perspective view which shows the fixed gear in another modification of the said embodiment. FIG. 18 is a front view showing a state where a sprocket-type internal rotation gear meshes with the fixed gear of FIG. It is a front view which shows the modification which the internal gear of a chain form meshes with the fixed gear of a sprocket form. It is a general | schematic external appearance perspective view in another modification of the said embodiment.

Explanation of symbols

1 Fixed member (vehicle body)
1a Base plate
2 Bearing part
3 Crankshaft
4 Crank arm
4L (left) crank arm
4R (right) crank arm
5 Internal gear
5L (left side) internal gear
5R (right side) internal gear
6 Fixed gear
6L (left side) fixed gear
6R (right side) fixed gear
7 Driving sprocket
8 Driven sprocket
9 Chain
10 Pedal (input member)
10L (left side) pedal
10R (right side) pedal
11L (left side) pedal axle
11R (right side) pedal axle
30L (left side) driving force transmission means
30R (right side) driving force transmission means
31L (left side) slider
31R (right side) slider
32L (left side) orbit guide
32R (right side) orbit guide
34L (Left side) guide groove
40 guide rail
41 Slider
50 inclined grooves
51 Orbit guide
52 Spring
70 Cover
71 Guide
81-84 bevel gear
85 drive shaft
900 hand cycle
901 Wheelchair
902 Hand cycle
905 Handle type pedal
906 chain
907 front wheel
Line connecting the axis P1 and the axis P2 of the crankshaft 3 when the L internal gear 5 is located at the top dead center or the bottom dead center
P1 Axle shaft
P2 Crankshaft axis

Claims (26)

  A crankshaft provided rotatably on a fixed member via a bearing portion, a pair of crank arms provided on both sides of the crankshaft, a pair of internal gears rotatably provided on each crank arm, and the fixed member A fixed tooth table that is inscribed and meshed with each of the internal gears as a planetary gear, a pair of driving force transmission means provided on each of the internal gears, and a pair engaged with each driving force transmission means And a rotation force extracting means that is provided integrally with the crankshaft and that extracts the rotation force transmitted from each of the internal gears to each of the crank arms as a propulsive force. The gear ratio with the fixed gear is formed so that it rotates once when the internal rotation gear makes one rotation while rolling the fixed gear, and further, the driving force transmission means is connected to the fixed gear through the input member. When driving force is applied (ON A rotation moment is generated in the internal gear, and the rotational force take-out means is driven using a contact point where the internal gear and the fixed gear mesh with each other as a fulcrum. apparatus.   The driving force transmitting means is formed by a slider formed on the input member and a track guide portion provided on the internal rotation gear for receiving and guiding the slider, and the slider Regardless of the position of the internal gear, is deviated from a line connecting the axis of the internal gear and the axis of the crankshaft, and is guided in the vicinity of the lowermost part of the track guide portion. 2. The crank device according to claim 1, wherein the crank device is placed.   3. The crank device according to claim 2, wherein the trajectory guide section is formed in a shape that describes an elliptical, polygonal, substantially linear, or curved trajectory.   3. The crank device according to claim 2, wherein the trajectory guide portion is formed by an inclined groove having a substantially linear shape or a curved shape.   5. The crank device according to claim 4, wherein a spring member is provided in the inclined groove, and the slider is allowed to remain in the vicinity of the lowermost portion when input by a spring force of the spring member.   6. The crank device according to claim 2, wherein a meshing portion between the internal gear and the fixed gear is covered with a cover so as not to interfere with the outside.   7. The crank apparatus according to claim 2, wherein guide means for defining the input member to reciprocate in the vertical direction is provided on the fixed gear.   8. The crank device according to claim 2, wherein the internal gear is formed in a sprocket shape, and the fixed gear is formed in a chain shape or a pin shape.   8. The crank device according to claim 2, wherein the internal gear is formed in a chain shape or a pin shape, and the fixed gear is formed in a sub rocket shape.   10. The crank device according to any one of claims 1 to 9, wherein the rotational force extracting means is formed of an elliptical sprocket. A crankshaft provided rotatably on the vehicle body via a bearing, a pair of crank arms provided on both sides of the crankshaft, a pair of internal gears rotatably provided on each crank arm, and the vehicle body A fixed gear that is inscribed and meshed with each of the internal gears in a planetary gear, a pair of driving force transmission means provided in each of the internal gears, and a pair of driving force transmission means engaged with each of the driving force transmission means. Provided integrally with the pedal and the crankshaft, is provided with a rotational force extracting means for extracting the rotational force transmitted from the internal gears to the crank arms as a propulsive force. The gear ratio with the gear is formed so that it rotates once when the internal gear makes one rotation while rolling the fixed gear, and the driving force is transmitted to the driving force transmitting means via the pedal. When applied (ON A rotation moment is generated in the internal rotation gear, and the rotational force take-out means is driven by using a contact point where the internal rotation gear and the fixed gear mesh with each other as a fulcrum. Crank pedal device.   The driving force transmitting means is formed by a slider provided on the pedal mounting shaft and a track guide provided on the internal gear and receiving and guiding the slider. Regardless of the position of the internal gear, the rotor is guided at a position deviated from a line connecting the axis of the internal gear and the axis of the crankshaft and in the vicinity of the lowermost part of the trajectory guide section. 12. The vehicle crank pedal device according to claim 11, wherein the vehicle crank pedal device is placed.   13. The vehicle crank pedal device according to claim 12, wherein the track guiding portion is formed in a shape that describes an elliptical, polygonal, substantially linear or curved track.   13. The vehicle crank pedal device according to claim 12, wherein the track guiding portion is formed by an inclined groove having a substantially linear shape or a curved shape.   15. The vehicle crank pedal device according to claim 14, wherein a spring member is provided in the inclined groove, and the slider is allowed to remain in the vicinity of the lowermost portion when input by a spring force of the spring member.   16. The vehicle crank pedal device according to any one of claims 12 to 15, wherein a meshing portion between the internal gear and the fixed gear is covered with a cover so as not to interfere with the outside.   17. The vehicle crank according to any one of claims 12 to 16, wherein the fixed gear is provided with guide means for reciprocating the mounting shaft of the pedal in the vertical direction. Pedal device.   18. The crank pedal device for a vehicle according to claim 12, wherein the internal gear is formed in a sprocket shape, and the fixed gear is formed in a chain shape or a pin shape.   19. The vehicle crank pedal device according to claim 12, wherein the internal gear is formed in a chain shape or a pin shape, and the fixed gear is formed in a sprocket shape.   20. The vehicle crank pedal device according to any one of claims 11 to 19, wherein the rotational force extraction means is formed of an elliptical sprocket. A crank device according to any one of claims 1 to 10 is mounted on a vehicle, and a vertical reciprocating driving force applied to an input member of the crank device is converted to a propulsive force for forward traveling of the vehicle. A featured vehicle. A crank pedal device according to any one of claims 11 to 20 is mounted on a vehicle, and a vertical reciprocating driving force applied to the crank pedal is converted into a propulsive force for forward traveling of the vehicle, To ride.   A crankshaft provided rotatably on a fixed member via a bearing portion, a crank arm provided on the crankshaft, an internal rotation gear provided rotatably on the crank arm, and an internal rotation gear provided on the fixed member A fixed gear that intermeshing and meshing a toothbrush like a planetary gear, a driving force transmission means provided in the internal rotation gear, an input member engaged with the driving force transmission means, and the crankshaft Provided with a rotational force extraction means for extracting rotational force transmitted from the internal rotation gear to the crank arm as a propulsive force, and having a gear ratio between the internal rotation gear and the fixed gear, the internal rotation gear Is configured to rotate once when rotating around the fixed gear, and when the driving force is applied to the driving force transmitting means via the input member (at the time of input), An internal gear and the fixed gear A crank device characterized in that a rotational moment is generated in the internal rotation gear and the rotational force take-out means is driven by using a contact point engaging with each other as a fulcrum.   The driving force transmitting means is formed by a sliding hand formed on the input member and a track guiding portion provided on the internal rotation gear for receiving and guiding the sliding member. Regardless of the position of the internal gear, the position is deviated from the line connecting the axis of the internal gear and the axis of the crankshaft, and is guided in the vicinity of the lowermost part of the trajectory guiding portion. 24. The crank device according to claim 23, wherein:   A crankshaft provided rotatably on the vehicle body via a bearing portion, a crank arm provided on the crankshaft, an internal rotation gear provided rotatably on the crank arm, and an internal rotation gear provided on the vehicle body. A fixed gear that meshes with a gear inscribed like a planetary gear, a driving force transmission means provided on the inner rotation gear, a handle type pedal engaged with the driving force transmission means, and a crankshaft. Provided with a rotational force extracting means for extracting the rotational force transmitted from the internal rotation gear to the crank arm as a propulsive force, and the tooth number ratio between the internal rotation gear and the fixed gear is determined by the internal rotation It is formed so that it rotates once when the gear makes one rotation while rolling the fixed gear, and when the driving force is applied to the driving force transmitting means via the handle type pedal (at the time of input) , The above adduction A vehicle crank pedal device characterized in that a rotational moment is generated in the internal gear and the rotational force extracting means is driven by using a contact point where the gear and the fixed gear mesh with each other as a fulcrum.   The driving force transmitting means is formed by a slider provided on an attachment shaft of the handle-type pedal, and a track guide provided in the internal rotation gear for receiving and guiding the slider. Regardless of the position of the internal gear, the slider is at a position deviated from a line connecting the axis of the internal gear and the axis of the crankshaft, and in the vicinity of the lowermost part of the track guide section. 26. The vehicle crank pedal device according to claim 25, wherein the vehicle crank pedal device is guided and maintained by the vehicle.

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