DE102019204162A1 - CONTROL DEVICE AND TRANSMISSION SYSTEM - Google Patents

Abstract

A control device 12 includes a controller 14 configured to automatically control a transmission T of a human powered vehicle A according to a shift condition. The controller 14 executes a predetermined control with respect to the transmission T according to information regarding traction of a wheel W of the human powered vehicle A.

Description

The present invention relates to a control device and a transmission system.

A known transmission system automatically controls a transmission of a human-powered vehicle according to a shift condition. A conventional transmission system controls a transmission according to a shift condition that is determined based on a crank revolution speed of a human-powered vehicle and a threshold value to maintain the rotational speed of the crank in a predetermined range. JP 10 - 511 621 A describes an example of the conventional transmission system.

It is desirable that a driver be able to drive a human-powered vehicle comfortably.

An object of the present invention is a control device and a transmission that allow comfortable driving of a human powered vehicle.

A control device according to a first aspect of the present invention includes a controller configured to automatically control a transmission of a human-powered vehicle according to a shift condition. The controller executes a predetermined control with respect to the transmission according to information regarding traction of a wheel of the human powered vehicle. The predetermined control with respect to the transmission is carried out according to the information regarding traction of the wheel. This allows a comfortable ride with the human powered vehicle.

According to a second aspect of the present invention, the control device according to the first aspect is configured such that the information related to traction includes information regarding a slip rate of the wheel. The predetermined control with respect to the transmission is executed in accordance with the information regarding the slip rate. This allows a comfortable ride with the human powered vehicle.

According to a third aspect of the present invention, the control device according to the second aspect is configured such that the predetermined control includes a control for changing a gear ratio of the human powered vehicle. The gear ratio of the human powered vehicle is changed in accordance with the slip rate information. This allows a comfortable ride with the human powered vehicle.

According to a fourth aspect of the present invention, the control apparatus according to the third aspect is configured such that the controller increases the gear ratio in accordance with the information regarding the slip rate in a state where the wheel is turning or in a state that is expected that the wheel is about to spin. In a case where the transmission is controlled to increase the gear ratio, the torque acting on the crank of the human powered vehicle is reduced, thereby reducing the wheel spin. This allows a comfortable ride with the human powered vehicle.

According to a fifth aspect of the present invention, the control apparatus according to the third or fourth aspect is configured such that the controller increases the gear ratio in a case where the slip rate is less than a first slip rate. The transmission is controlled to increase the gear ratio in a case where wheel spin is expected. This allows a comfortable ride with the human powered vehicle.

According to a sixth aspect of the present invention, the control device according to any one of the third to fifth aspects is configured such that the controller decreases the transmission rate in accordance with the information related to the slip rate in a state where the wheel is locked or in a state that in which it is expected that the wheel is about to block. In a case where the wheel of the human powered vehicle is braked, the vehicle speed of the human powered vehicle decreases. Thus, the transmission is controlled so that the vehicle speed is reduced, allowing comfortable driving of the human-powered vehicle.

According to a seventh aspect of the present invention, the control device according to one of the third to sixth aspects is configured so that the controller reduces the gear ratio in a case where the slip rate is greater than or equal to a second slip rate. In a case where the wheel is expected to lock, the transmission is controlled to reduce the gear ratio. This allows a comfortable ride with the human powered vehicle.

According to an eighth aspect of the present invention, the control apparatus according to any one of the third to seventh aspects is configured such that in a case where the slip rate is greater than or equal to a third slip rate and less than a fourth slip rate, the controller sets the slip rate gear ratio does not change. This allows a comfortable ride with the human powered vehicle.

According to a ninth aspect of the present invention, the control device according to one of the third to eighth aspects is configured such that the control changes the gear ratio according to the first changed information different from the slip rate after changing the gear ratio according to the slip rate. The gear ratio of the human powered vehicle is changed according to the first changed information. This allows a comfortable ride with the human powered vehicle.

According to a tenth aspect of the present invention, the control device according to the ninth aspect is configured such that the first changed information includes at least one of an elapsed time from the change of the gear ratio according to the slip rate and a condition of a road surface on which the human powered vehicle is traveling , This allows a comfortable ride with the human powered vehicle.

According to an eleventh aspect of the present invention, the control device according to the tenth aspect is configured such that the controller changes the gear ratio in a case where the elapsed time is greater than or equal to a predetermined time. In a case where the elapsed time is greater than or equal to the predetermined time, it can be expected that the slip rate has stabilized. Thus, the gear ratio of the human-powered vehicle is changed according to the first changed information to allow comfortable driving of the human-powered vehicle.

According to a twelfth aspect of the present invention, the control device according to the tenth or eleventh aspect is configured such that the controller changes the gear ratio in a case where the condition of the road surface is stable. In a case where the road surface is stable, the slip rate can be expected to be stable. Thus, the gear ratio of the human-powered vehicle is changed according to the first changed information, enabling comfortable driving of the human-powered vehicle.

According to a thirteenth aspect of the present invention, the control device according to any one of the ninth through twelfth aspects is configured such that the controller changes the gear ratio according to the first changed information so that the gear ratio coincides with the gear ratio before the change according to the slip rate, the gear ratio approaching the change according to the slip rate or coinciding with the gear ratio according to the shift condition. This allows a comfortable ride with the human powered vehicle.

According to a fourteenth aspect of the present invention, the control device according to any of the second to thirteenth aspects is configured such that the predetermined control includes a control for changing the switching condition. The switching condition is changed in accordance with the slip rate information. This allows a comfortable ride with the human powered vehicle.

According to a fifteenth aspect of the present invention, the control apparatus according to the fourteenth aspect is configured such that the controller changes the transmission condition in a case where the slip rate is less than a fifth slip rate. The shift condition is changed in a case where wheel spin is expected. This allows a comfortable ride with the human powered vehicle.

According to a sixteenth aspect of the present invention, the control apparatus according to the fourteenth or fifteenth aspect, wherein the control changes the transmission condition in a case where the slip rate is greater than or equal to a sixth slip rate. The shift condition is changed in a case where the wheel is expected to lock. This allows a comfortable ride with the human powered vehicle.

According to a seventeenth aspect of the present invention, the control device according to any one of the fourteenth to sixteenth aspects is configured such that in a case where the slip rate is greater than or equal to a seventh slip rate and less than an eighth slip rate, the controller does not change the shift condition. This allows a comfortable ride with the human powered vehicle.

According to an eighteenth aspect of the present invention, the control device according to any one of the fourteenth to seventeenth aspects is configured such that the control changes the switching condition according to the second changed information different from the slip rate after changing the switching condition according to the slip rate. The switching condition is changed according to the second changed information. This allows a comfortable ride with the human powered vehicle.

According to a nineteenth aspect of the present invention, the control apparatus according to the eighteenth aspect is configured such that the second changed information includes at least one of an elapsed time from the change of the shifting condition according to the slip rate and a condition of a road surface on which the human powered vehicle is traveling , This allows a comfortable ride with the human powered vehicle.

According to a twentieth aspect of the present invention, the control apparatus according to the nineteenth aspect is configured such that the controller changes the switching condition in a case where the elapsed time is greater than or equal to a predetermined time. In a case where the elapsed time is greater than or equal to the predetermined time, it can be expected that the slip rate has stabilized. Thus, the shifting condition is changed according to the second changed information, which enables comfortable driving of the human powered vehicle.

According to a twenty-first aspect of the present invention, the control apparatus according to the nineteenth or twentieth aspect is configured such that the controller changes the gear ratio in a case where the condition of the road surface is stable. In a case where the condition of the road surface is stable, it can be expected that the slip rate is stable. Thus, the shifting condition is changed according to the second changed information, which enables comfortable driving of the human powered vehicle.

According to a twenty-second aspect of the present invention, the control device according to any one of the eighteenth to twenty-first aspects is configured such that the control changes the switching condition according to the second changed information so that the switching condition matches the switching condition before the change according to the slip rate or the switching condition approaching the change according to the hatching rate. This allows a comfortable ride with the human powered vehicle.

A transmission system according to a twenty-third aspect of the present invention includes the control device and the transmission. A predetermined control with respect to the transmission is carried out according to the information about traction of the wheel. This allows a comfortable ride with the human powered vehicle.

A transmission system according to a twenty-fourth aspect of the present invention includes a controller and an operating unit. The controller is configured to be switched between a first mode in which the controller automatically controls a transmission of a human powered vehicle according to a shift condition and a second mode in which the controller does not control the transmission. The actuator unit includes an actuatable switch. The controller selects one of the first mode and the second mode in a state in which the switch is operated, and the controller automatically selects the other of the first mode and the second mode in a state where the switch is no longer operated , The first mode and the second mode are switched in accordance with the operation of the actuator unit. This allows a comfortable ride with the human powered vehicle. Further, the first mode and the second mode are switched only in a case where the switch is continuously operated. This reduces erroneous user operations.

According to a twenty-fifth aspect of the present invention, the transmission system according to the twenty-fourth aspect is configured to be after a predetermined time has elapsed, when the controller selects one of the first mode and the second mode, or when the controller detects that the switch is not pressed, the controller automatically selects the other of the first mode and the second mode. Thereby, the first mode and the second mode are switched at an appropriate time.

According to a twenty-sixth aspect of the present invention, the switch in the transmission system according to the twenty-fourth aspect is configured to assume a first operating position and a second operating position. The actuator further includes a biasing element configured to bias the switch and move to the second actuated position. The controller selects one of the first mode and the second mode in a case where the switch is moved to the first operating position. The controller selects the other one of the first mode and the second mode in a case where the switch is moved to the second operating position. This improves the operability of the operating unit.

A transmission system according to a twenty-seventh aspect of the present invention includes a controller and an operating unit. The controller is configured to switch between a first mode in which the controller automatically controls a transmission of a human powered vehicle according to a shift condition and a second mode in which the controller does not control the transmission controls. The actuator unit includes a switch that can assume a first actuation position and a second actuation position, and a biasing member that biases the switch and moves it to the second actuation position. The controller selects one of the first mode and the second mode in a case where the switch is moved to the first operating position. The controller selects the other one of the first mode and the second mode in a case where the switch is moved to the second operating position. The first mode and the second mode may be switched in accordance with the operation of the first mode and the second mode. This allows a comfortable ride with the human powered vehicle. Further, the first mode and the second mode are switched according to the operating position of the switch.

The control device and the transmission according to the present invention allow comfortable driving of the human powered vehicle.

• 1 eine Seitenansicht eines menschlich angetriebenen Fahrzeugs ist, das ein Übertragungssystem gemäß einer ersten Ausführungsform beinhaltet;
• 2 ein Blockdiagramm ist, das die Verbindungsbeziehung des in 1 dargestellten Übertragungssystems und verschiedenen Elemente veranschaulicht;
• 3 eine Abbildung ist, die ein Beispiel für eine Schaltbedingung veranschaulicht, die zur automatischen Steuerung eines in 1 dargestellten Getriebes verwendet wird;
• 4 eine Abbildung ist, die die Beziehung zwischen einer Schlupfrate eines in 1 gezeigten Rades und einem Übersetzungsverhältnis darstellt;
• 5 eine perspektivische Ansicht ist, die einen Griff in einem Zustand darstellt, in dem sich ein in 2 dargestellter Schalter in einer zweiten Betätigungsposition befindet;
• 6 eine perspektivische Ansicht ist, die einen Griff in einem Zustand darstellt, in dem sich der in 2 dargestellte Schalter in einer ersten Betätigungsposition befindet;
• 7 ein Flussdiagramm ist, das ein Beispiel für eine Steuerung darstellt, die von einer Steuervorrichtung ausgeführt wird, wie in 2 dargestellt;
• 8 eine Abbildung ist, die die Beziehung zwischen einer Radschlupfrate und dem Übersetzungsverhältnis in einem Übertragungssystem gemäß einer zweiten Ausführungsform darstellt;
• 9 eine Abbildung ist, die ein Beispiel für eine Schaltbedingung darstellt, die verwendet wird, um das Getriebe im Übertragungssystem gemäß der zweiten Ausführungsform automatisch zu steuern; und
• 10 ein Flussdiagramm ist, das ein Beispiel für eine Steuerung darstellt, die von einer Steuervorrichtung gemäß einer zweiten Ausführungsform ausgeführt wird.

A more complete appreciation of the invention and many of the attendant advantages will be readily obtained as it becomes better understood by the following detailed description of the embodiments of the present invention taken in conjunction with the accompanying drawings. Selected embodiments of the present invention will now be explained with reference to the drawings, wherein

• 1 Fig. 10 is a side view of a human powered vehicle incorporating a transmission system according to a first embodiment;
• 2 is a block diagram illustrating the connection relationship of the in 1 illustrated transmission system and various elements;
• 3 Figure 1 is an example of a switching condition that is used to automatically control an in-line condition 1 shown gear is used;
• 4 An illustration is the relationship between a hatching rate of an in 1 shown wheel and a gear ratio represents;
• 5 is a perspective view illustrating a handle in a state in which a in 2 shown switch is in a second operating position;
• 6 is a perspective view illustrating a handle in a state in which the in 2 shown switch is in a first operating position;
• 7 FIG. 10 is a flowchart illustrating an example of a control executed by a control device as in FIG 2 shown;
• 8th Fig. 10 is a diagram illustrating the relationship between a wheel slip rate and the gear ratio in a transmission system according to a second embodiment;
• 9 Fig. 10 is an illustration showing an example of a shift condition used to automatically control the transmission in the transmission system according to the second embodiment; and
• 10 FIG. 10 is a flowchart illustrating an example of a control executed by a control device according to a second embodiment. FIG.

Like reference numerals designate corresponding or identical elements throughout the several drawings.

A human powered vehicle A that is a transmission system 10 will now be with reference to 1 described.

A human-powered vehicle refers to a vehicle that at least partially uses human driving force as a driving force while driving, and includes a vehicle that supports the human driving force with a motor. A human powered vehicle does not include a vehicle that does not use human motive power as the driving force. A human powered vehicle is typically a compact light vehicle that does not require a driver's license for driving on a public road. The illustrated human powered vehicle A is a bicycle ( e -Bike) with an auxiliary electric unit e , the electrical energy to drive the human powered vehicle A used. The illustrated human powered vehicle A is a trekking bike. The human powered vehicle A also includes a frame A1 , a front fork A2 , Bikes W , a handlebar H and a powertrain B , The wheels W include a front wheel WF and a rear wheel WR ,

The powertrain B is of a chain drive type. The powertrain B includes a crank C , front sprockets D1 , rear sprockets D2 and a chain D3 , The crank C includes a crankshaft C1 passing through the frame A1 is rotatably mounted, and two crank arms C2 at the two ends of the crankshaft C1 are provided. A pedal PD is rotatable with the distal end of each crank arm C2 coupled. The powertrain B can of any type, such as a belt drive type or drive shaft type.

The front sprockets D1 are at the crank C provided and become integral with the crankshaft C1 turned. The rear sprockets D2 are on a hub MR of the rear wheel WR arranged. The chain D3 is a front sprocket D1 and a rear sprocket D2 wound. A user of the human powered vehicle A drives, impels driving force on the pedals PD out, over the front sprocket D1 , the chain D3 and the rear sprocket D2 on the rear wheel WR is transmitted.

The human powered vehicle A also includes one or more components CO , The components CO include at least one of a transmission T , Braking devices BD , a suspension SU , an adjustable seat post ASP and the auxiliary electric unit e , The braking devices BD , the suspension SU and the adjustable seatpost ASP can be operated mechanically or electrically in accordance with the operation of a corresponding actuator. The term "at least one of" used in this disclosure means "one or more" of a desired choice. For example, the term "at least one of" as used in this disclosure means "only a single choice" or "both of two choices" if the number of choices is two. For example, the term "at least one of" as used in this disclosure means "only a single choice" or "any combination of equal to or more than two choices" if the number of choices thereof is equal to or greater than three. The electrically operated components CO for example, by a battery BT that on the human powered vehicle A is mounted, discharged energy or by a dedicated power source (not shown) of each component CO discharged energy.

The gear T includes at least one of a front derailleur TF and a rear derailleur TR , The front derailleur TF is near the front sprockets D1 , The front derailleur TF is pressed to the sprocket D1 change that to the chain D3 is wound to the gear ratio of the human powered vehicle A to change. The rear derailleur TR is at a rear end A3 of the frame A1 intended. The rear derailleur TR is pressed to the sprocket D2 change that to the chain D3 is wound to the gear ratio of the human powered vehicle A to change. The gear T can be configured to be operated mechanically or electrically, according to the operation of, for example, a shift lever SL (Actuator). The gear T may be of an internal type such as an internal gear hub.

The number of braking devices BD corresponds to the number of wheels W , In the present embodiment, the human powered vehicle includes A the brake device BD according to the front wheel WF and the brake device BD according to the rear wheel WR , The braking devices BD have the same structure. The brake device BD For example, a rim brake device may be a rim R of the human powered vehicle A slows. In one example, the brake device BD by pressing a corresponding brake lever BL (Actuator) mechanically or electrically operated. The brake device BD may be a disc brake device comprising a disc brake rotor (not shown) of the human powered vehicle A slows.

The suspension SU includes at least one of a front suspension SF and a rear suspension (not shown). The front suspension SF serves to influence the front wheel WF from the road surface absorbs. The rear suspension is used to affect the rear wheel WR from the road surface absorbs. The adjustable seat post ASP is pressed to the height of a saddle SD opposite the frame A1 to change. The electrical auxiliary unit e serves to support the driving force of the human powered vehicle A , The electrical auxiliary unit e for example, according to the on the pedals PD applied driving force actuated. The electrical auxiliary unit e includes an electric motor E1 ,

The configuration of the transmission system 10 will now be regarding 2 to 6 described.

As in 2 shown, includes the transmission system 10 a control device 12 and the gearbox T , The transmission system 10 for example, by the battery BT discharged energy is pressed. The control device 12 includes a controller 14 that is configured to the gearbox T of the human powered vehicle A to control automatically according to a switching condition. The control 14 is a central processing unit (CPU) or a microprocessor unit (MPU). The control 14 Can also be configured to the gearbox T according to the operation of the shift lever SL to control.

With reference to 3 The switching condition is based on a reference value and a threshold value TH certainly. Of the Reference value includes at least one of driving information related to the driving state of the human powered vehicle A and environmental information related to the driving environment of the human powered vehicle A , The driving information includes at least one of cadence, torque applied to the crank C of the human powered vehicle A affects vehicle speed, acceleration and power. Performance is the product of cadence and torque. The environment information includes at least one of road surface information regarding the condition of the road surface, air resistance information regarding the air resistance, weather information with respect to the weather, and temperature information with respect to the temperature. The road surface information includes at least one of resistance information related to the road surface resistance and slope information regarding the road surface slope. The resistance of the road surface is changed by gravel, gravel, asphalt and the like. The air resistance information includes information related to air resistance to the user or the human powered vehicle A acts in a case where the human powered vehicle A moves. In one example, the air resistance information includes wind related information such as wind speed, wind pressure, and wind direction.

The threshold TH includes a first threshold TH1 and a second threshold TH2 , The control 14 controls the transmission T to the gear ratio according to the relationship of the reference value and the first threshold TH1 to increase. Furthermore, the controller controls 14 The gear T to the gear ratio according to the relationship of the reference value and the second threshold value TH2 to reduce. In the present embodiment, the first threshold is TH1 greater than the second threshold TH2 , That is, the thresholds TH1 and TH2 that determine the switching condition have hysteresis characteristics. In one example, the controller is controlling 14 The gear T such that the gear ratio increases in a case where the reference value is smaller than the first threshold value TH1 is, and that the gear ratio decreases in a case where the reference value is smaller than the second threshold value TH2 is. In addition to the gearbox T can the controller 14 be configured to the various electrically operated components CO to control.

With reference to 4 leads the controller 14 a predetermined control with respect to the transmission T according to information relating to traction of the wheel W of the human powered vehicle A out. The information relating to traction includes information relating to a slip rate S of the wheel W , The predetermined control includes information for changing the gear ratio of the human powered vehicle A , The control 14 For example, the slip rate S is calculated based on the relationship of the vehicle speed and the rotational speed of the wheel W (hereinafter "the wheel speed vw " called). The vehicle speed is a vehicle body speed vv in which the frame A1 of the human powered vehicle A emotional. The slip rate S results from dividing the difference of the vehicle body speed Vv and the wheel speed Vw by the vehicle body speed vv , In one example, the controller calculates 14 the slip rate S according to equation [1]. $$\text{S}=\frac{\left(\text{vv}-\text{vw}\right)}{\text{vv}}\times 100$$

The slip rate S of 0% indicates a condition in which the wheel W rolls normally and is not in a blocked or spinning state. In this case, the vehicle body speed Vv is equal to the wheel speed vw , The hatching rate S of 100% indicates that the wheel W is in a locked state. In this case, the wheel speed Vw is 0 km / h. A negative hatching rate indicates that the wheel W is in a spinning state. In this case, the wheel speed is vw higher than the vehicle body speed vv ,

According to the information regarding the hatching rate S increases the control 14 the gear ratio in a state where the wheel W jumbled, or in a state where it is expected that the wheel W is about to go crazy. The control 14 determines that the wheel W is spinning or is about to spin, for example in a case where the slip rate S is less than a first slip rate TS1 is. In one example, the controller increases 14 the gear ratio in a case where the slip rate S less than the first hatching rate TS1 is.

The first hatching rate TS1 is set, for example, according to a first example and a second example, which will now be described. In the first example, the first hatching rate TS1 based on the hatching rate S set at which the wheel W starts to spin. In one example, the first hatching rate TS1 in advance based on the hatching rate S set at which the wheel W starts to spin. In the second example, the first hatching rate TS1 based on the slip rate S, in which a spin of the wheel W is expected. In one example, the first hatching rate TS1 set based on equation [2]. $$\text{X}+\dot{\text{X}}\times \Delta \text{T1}>\text{TA}$$

The variable X is determined by the current slip rate S of the wheel W replaced. The constant ΔT1 is replaced by the expected time until the wheel W will begin to turn (hereinafter called "the first expected time"). The first expected time can be set in advance to any time. The constant TA is replaced by a value with respect to the slip rate S at which the wheel W starts to spin. The first hatching rate TS1 is set in advance, for example, based on the hatching rate S that satisfies the equation [2]. The control 14 may be the first hatching rate TS1 update to the equation [2] according to the relationship of the actual slip rate S and a time-out value of the hatching rate S to fulfill.

The control 14 decreases the gear ratio in accordance with the information related to the slip rate S in a state in which the wheel W is blocked or in which the wheel W is about to block. In a case where, for example, the slip rate S is greater than or equal to a second slip rate TS2 is the controller determines 14 that the wheel W is blocked or about to block. In one example, the controller decreases 14 the gear ratio in a case where the slip rate S is greater than or equal to the second slip rate TS2 is. In the present embodiment, the second slip rate TS2 greater than the first hatching rate TS1 ,

The second hatching rate TS2 is set, for example, according to one of a third example and a fourth example, which will now be described. In the third example, the second hatching rate TS2 based on the slip rate S set in a state in which the wheel W is blocked. In one example, the second hatching rate TS2 based on the slip rate S set at which the wheel W is about to block. In the fourth example, the second hatching rate TS2 is set based on the slip rate S, at which it is expected that the wheel W will block. In one example, the second hatching rate TS2 set based on equation [3]. $$\text{X}+\dot{\text{X}}\times \Delta \text{T2}>\text{TB}$$

The variable X is determined by the current slip rate S of the wheel W replaced. The constant .DELTA.T2 is replaced by the expected time until the wheel W will begin to block (hereinafter called "the second expected time"). The second expected time can be set in advance to any time. The constant TB is by a value in terms of hatching rate S replaced when the wheel W starts to block. The second hatching rate TS2 is set in advance, for example, based on the slip rate S satisfying the equation [2]. The control 14 may be the second hatching rate TS2 update to equation [3] according to the relationship of the actual hatching rate S and a time-out value of the hatching rate S to fulfill.

In a case where the hatching rate S greater than or equal to a third hatching rate TS3 and less than a fourth hatching rate TS4 is the controller changes 14 the gear ratio for the hatching rate S Not. Preferably, the third hatching rate TS3 for example, greater than or equal to the first hatching rate TS1 set. In one example, the third hatching rate TS3 equal to the first hatching rate TS1 , Preferably, the fourth slip rate TS4 set to be, for example, less than or equal to the second hatching rate TS2 is. In one example, the fourth hatching rate TS4 equal to the second hatching rate TS2 ,

After changing the gear ratio according to the slip rate S changes the control 14 the gear ratio according to the first changed information other than the slip rate S. The first changed information includes at least one of the elapsed time from the change of the gear ratio according to the slip rate S and the condition of the road surface on which the human-powered vehicle is running A moves. In one example, the controller changes 14 the gear ratio in a case where the elapsed time is greater than or equal to a predetermined time. The predetermined time can be set in advance to any time. In one example, the controller changes 14 the gear ratio in a case where the condition of the road surface is stable. In particular, the controller changes 14 the gear ratio in a case where the road surface resistance is less than a predetermined resistance and the road surface slope is less than a predetermined pitch. The control 14 changes the gear ratio according to the first changed information so that the gear ratio with the gear ratio before the change according to the slip rate S matches the gear ratio before the change according to the slip rate S approaches or matches the gear ratio according to the switching condition.

As in 2 shown, includes the control device 12 also a memory 16 which is configured to store information. The memory 16 includes a non-volatile memory and a volatile memory. The memory 16 stores, for example, various control programs, preset information, and the like. In one example, the memory stores 16 Information related to the switching condition, information related to the slip rate S, and the like.

The human powered vehicle A further includes a detection device DD that collects different types of information. The detection device DD includes a first detector DD1 which is configured to the hatching rate S of the wheel W to capture a second detector DD2 configured to detect the first changed information and a third detector DD3 , which is configured to capture the reference value. The first detector DD1 includes a sensor configured to control the vehicle body speed vv to detect, and a sensor (not shown) that is configured to the wheel speed vw capture. The second detector DD2 includes at least one of a sensor configured to detect the elapsed time and a sensor configured to acquire the road surface information (not shown). The third detector DD3 includes at least one of a sensor configured to detect the cadence, a sensor configured to detect the torque applied to the crank C acts, a sensor configured to detect the vehicle speed, a sensor configured to detect the road surface information, a sensor configured to detect the air resistance information, a receiver configured to receive weather information from an external device, and a sensor configured to acquire the weather information (not shown). The torque sensor may, for example, be a sensor used to control the auxiliary electrical unit e is used. The third detector DD3 may be output from the example in which the vehicle speed is used as the reference value for the shift condition.

The transmission system 10 further includes an actuator unit 18 , The operating unit 18 includes an actuatable switch 18A , The control 14 switches between a first mode in which the controller 14 The gear T of the human powered vehicle A according to the switching condition automatically controls, and a second mode in which the controller 14 The gear T not controls. In one example, the controller switches 14 between the first mode and the second mode according to the operation of the actuator unit 18 , In the present embodiment, the controller selects 14 one of the first mode and the second mode in a state in which the switch 18A is pressed, and automatically selects the other of the first mode and the second mode in a case where the switch 18A is no longer operated.

As in 5 and 6 shown is the actuator unit 18 on the handlebar H intended. In one example, preferably the actuator unit 18 on the handlebar H provided in an area in which the user controls the operating unit 18 while holding a handle GR can operate. In the example shown, the actuating unit 18 on the handle GR of the handlebar H intended. The desk 18A can be a first actuation position (see 6 ) and a second operating position (see 5 ). An example of the switch 18A is a key switch. The desk 18A is in the first operating position in the operating state. The desk 18A is in the second operating position in an initial state. The operating unit 18 further includes a biasing element 18B (please refer 2 ), which is configured to switch 18A to bring in the second operating position. The biasing element 18B is for example on the handle GR provided to the switch 18A pretension. 5 and 6 show the handle GR without the shifter SL ,

The control 14 selects one of the first mode and the second mode in a case where the switch 18A is moved to the first operating position, and selects the other of the first mode and the second mode in a case where the switch 18A is moved to the second operating position. The control 14 selects one of the first mode and the second mode, for example, in a case where the switch 18A is moved from the second operating position to the first operating position. In a case where the switch 18A is no longer actuated, for example, moves the biasing force of the biasing member 18B the switch 18A automatically from the first operating position to the second operating position. In this case, the controller selects 14 automatically the other of the first mode and the second mode. In one example, the controller selects 14 the second mode in a case where the switch 18A is moved to the first operating position and the first mode in a case where the switch 18A is moved to the second operating position. After a predetermined time has elapsed, which passes when the controller 14 select one of the first mode and the second mode or if the controller 14 detected that the switch 18A not operated, the controller can 14 automatically select the other from the first mode and the second mode.

An example of one of the control device 12 executed control is now referring to 7 described.

The control 14 For example, executes the control described below in the first mode. In step S11 determines the control 14 whether the hatching rate S less than the first hatching rate TS1 is or not. In a case where the controller 14 in step S11 that determines the hatching rate S less than the first hatching rate TS1 is, the controller is driving 14 with step S12 continued. In step S12 increases the control 14 the gear ratio. More precisely, controls the controller 14 The gear T to increase the gear ratio. After completing step S12 the controller is running 14 with step S15 continued.

In a case where the controller 14 in step S11 that determines the hatching rate S greater than or equal to the first hatching rate TS1 is, the controller is driving 14 with step S13 continued. In step S13 determines the control 14 whether the hatching rate S greater than or equal to the second hatching rate TS2 is or not. In a case where the controller 14 in step S13 that determines the hatching rate S less than the second hatching rate TS2 is, the controller returns 14 to step S11 back. Especially in a case where the controller 14 that determines the hatching rate S greater than or equal to the first hatching rate TS1 and smaller than the second hatching rate TS2 is the controller changes 14 the gear ratio for the hatching rate S Not. In other words, in a case where the hatching rate S greater than or equal to the third hatching rate TS3 and smaller than the fourth hatching rate TS4 is the controller changes 14 the gear ratio for the hatching rate S Not.

In a case where the controller 14 in step S13 determines that the slip rate S is greater than or equal to the second slip rate TS2 is, the controller is driving 14 with step S14 continued. In step S14 reduces the control 14 the gear ratio. More precisely, controls the controller 14 The gear T to reduce the gear ratio. In step S15 changes the control 14 the gear ratio according to the first changed information. This completes the processing of the steps S11 to S15 , As long as the first mode stops, the controller repeats 14 the handling of the steps S11 to S15 ,

The transmission system 10 According to a second embodiment will now be with reference to 8th to 10 described. The components that are identical to the corresponding components of the first embodiment are given the same reference numerals. A detailed description of these components will be omitted.

With reference to 8th leads the controller 14 a given control with respect to the transmission T according to the information regarding the hatching rate S of the wheel W out. The predetermined control includes a control for changing the switching condition. The control 14 changes the switching condition according to the slip rate information S in a state in which the wheel W pervaded or in a condition that is expected to be the wheel W is about to go crazy. For example, in a case where the hatching rate S is less than a fifth hatching rate TS5 is the controller determines 14 that the wheel W is spinning or is about to spin. In one example, the controller changes 14 the switching condition in a case where the slip rate S less than the fifth hatching rate TS5 is. The fifth hatching rate TS5 For example, it will be like the first hatching rate TS1 set.

The control 14 controls the switching condition in accordance with the information related to the slip rate S in a state in which the wheel W is blocked or in a condition in which it is expected that the wheel W is about to block. In a case where, for example, the hatching rate S greater than or equal to a sixth hatching rate TS6 is the controller determines 14 that the wheel W is blocked or about to block. In one example, the controller changes 14 the switching condition in a case where the slip rate S is greater than or equal to the sixth slip rate TS6 is. In the present embodiment, the sixth slip rate TS6 greater than the fifth hatching rate TS5 , The sixth hatching rate TS6 For example, it becomes like the second hatching rate TS2 set.

In a case where the hatching rate S greater than or equal to a seventh hatching rate TS7 and smaller than the eighth hatching rate TS 8 is the controller changes 14 the switching condition for the slip rate S not. Preferably, the seventh hatching rate TS7 greater than or equal to the fifth hatching rate TS5 set. In one example, the seventh hatching rate TS7 equal to the fifth hatching rate TS5 , Preferably, the eighth hatching rate TS 8 at less than or equal to the sixth hatching rate TS6 set. In one example, the eighth hatching rate TS 8 equal to the sixth hatching rate TS6 ,

With reference to 9 changes the control 14 in a case where the slip rate S is smaller than the fifth slip rate TS5 is at least one of the first threshold TH1 and the second threshold TH2 , In one example, the controller changes 14 the switching condition in a case such that the slip rate S is smaller than the fifth slip rate TS5 is that the switching condition with respect to the first threshold TH1 easily fulfilled. In particular, the controller reduces 14 the first threshold TH1 in a case where the hatching rate S less than the fifth hatching rate TS5 is. The first threshold TH1 which is indicated by the solid line in 9 is an example of the first threshold TH1 before being changed. The first threshold TH1 who in 9 is shown by a double-dashed line, is an example of the first threshold TH1 after it has been changed so that the switching condition is easily satisfied.

In a case where the slip rate S is greater than or equal to the sixth slip rate TS6 is the controller changes 14 at least one of the first threshold TH1 and the second threshold TH2 , In one example, in a case where the hatching rate S greater than or equal to the sixth hatching rate TS6 is the controller changes 14 the switching condition with respect to the second threshold TH2 so that the switching condition is easily met. In particular, in a case where the slip rate S is greater than or equal to the sixth slip rate TS6 is, increases the control 14 the second threshold TH2 , The second threshold TH2 which is indicated by the solid line in 9 is an example of the second threshold TH2 before being changed. The second threshold TH2 which is indicated by the double-dashed line in 9 is an example of the second threshold TH2 after it has been changed so that the switching condition is easily satisfied.

After changing the switching condition according to the slip rate S, the controller changes 14 the switching condition according to the second modified information, which differs from the hatching rate S differ. The second changed information includes at least one of the elapsed time from the change of the switching condition according to the slip rate S and the condition of the road surface on which the human powered vehicle A moves. In one example, the controller changes 14 the switching condition in a case where the elapsed time is greater than or equal to a predetermined time. The predetermined time can be set in advance to any time. In one example, the controller changes 14 the switching condition in a case where the condition of the road surface is stable. In particular, the controller changes 14 the switching condition in a case where the road surface resistance is less than a predetermined resistance and the road surface slope is smaller than a predetermined slope. The control 14 changes the switching condition according to the second changed information so that the switching condition coincides with the switching condition before the change according to the slip rate S, or approaches the switching condition before the change according to the slip rate S.

Regarding 10 Now, an example of one of the control device will be described 12 executed control described.

The control 14 For example, executes the control described below in the first mode. In step S21 determines the control 14 whether the slip rate S is less than the fifth hatching rate TS5 is or not. In a case where the controller 14 in step S21 determines that the slip rate S is less than the fifth hatching rate TS5 is, the controller is driving 14 with step S22 continued. In step S22 reduces the control 14 the first threshold TH1 , In particular, the controller changes 14 the switching condition, around the first threshold TH1 to reduce. After completing step S22 the controller is running 14 with step S25 continued.

In a case where the controller 14 in step S21 that determines the hatching rate S greater than or equal to the fifth hatching rate TS5 is, the controller is driving 14 with step S23 continued. In step S23 determines the control 14 whether the hatching rate S greater than or equal to the sixth hatching rate TS6 is or not. In a case where the controller 14 in step S23 that determines the hatching rate S less than the sixth hatching rate TS6 is, the controller returns 14 to step S21 back. Especially in a case where the controller 14 that determines the hatching rate S greater than or equal to the fifth hatching rate TS5 and less than the sixth hatching rate TS6 is the controller changes 14 the switching condition for the slip rate S Not. In other words, in a case where the controller 14 that determines the hatching rate S greater than or equal to the seventh hatching rate TS7 and smaller than the eighth hatching rate TS 8 is the controller changes 14 the hatching rate S Not.

In a case where the controller 14 in step S23 that determines the hatching rate S greater than or equal to the sixth hatching rate TS6 is, the controller is driving 14 with step S24 continued. In step S24 increases the control 14 the second threshold TH2 , In particular, the controller changes 14 the switching condition to the second threshold TH2 to increase. In step S25 changes the control 14 the switching condition according to the second changed information. This completes the processing of the steps S21 to S25 , As long as the first mode stops, the controller repeats 14 the handling of the steps S21 to S25 ,

The description related to the above embodiment illustrates, without intending to limit, an applicable form of a control device and a transmission system according to the present invention. In addition to the above-described embodiments, the control apparatus and the transmission system according to the present invention are applicable for example, for modified examples of the embodiments described above, and combinations of at least two of the modified examples that are not contradictory. In the modified examples described below, the components that are identical to the corresponding components of the above embodiments are given the same reference numerals. A detailed description of these components will be omitted.

The control contents of the controller 14 According to the first embodiment, it is possible to arbitrarily change. In a first example, the controller reduces 14 the gear ratio in a case where the slip rate S is smaller than the first slip rate TS1 is. In a second example, the controller increases 14 the gear ratio in a case where the slip rate S is greater than or equal to the second slip rate TS2 is.

The control contents of the controller 14 According to the second embodiment can be arbitrarily changed. In a first example, the controller increases 14 the first threshold TH1 in a case where the slip rate S is smaller than the fifth slip rate TS5 is. In a second example, the controller reduces 14 the second threshold TH2 in a case where the slip rate S is smaller than the fifth slip rate TS5 is. In a third example, the controller increases 14 the second threshold TH2 in a case where the slip rate S is smaller than the fifth slip rate TS5 is. In a fourth example, the controller decreases 14 the first threshold TH1 in a case where the hatching rate S greater than or equal to the sixth hatching rate TS6 is. In a fifth example, the controller increases 14 the first threshold TH1 in a case where the hatching rate S greater than or equal to the sixth hatching rate TS6 is. In a sixth example, the controller reduces 14 the second threshold TH2 in a case where the hatching rate S greater than or equal to the sixth hatching rate TS6 is.

The information related to traction can be changed arbitrarily. In one example, the traction information includes information about the torque applied to the crank C of the human-ground vehicle A acts. In this case, the controller can 14 increase the gear ratio and change the shifting condition according to the torque-related information in a state in which the wheel W jumbled, or in a state where it is expected that the wheel W is about to go crazy. Furthermore, the controller 14 reduce the gear ratio and change the shifting condition according to the torque-related information in a state in which the wheel W is blocked, or in a state in which it is expected that the wheel W about to block.

The construction of the switch 18A can be changed arbitrarily. In a first example, the switch 18A a lever switch. In a second example, the switch 18A a rotary switch. In this case, the biasing element 18B from the operating unit 18 omitted.

The location of the operating unit 18 can be changed arbitrarily. In a first example, the actuator unit 18 on or near the battery BT intended. In a second example, the actuator unit 18 at the frame A1 or at the front fork A2 intended.

The with the operating unit 18 connected control contents can be changed as desired. In a first example, the controller selects 14 one of the first mode and the second mode in a case where the switch 18A is pressed, and the controller 14 selects the other of the first mode and the second mode in a case where the switch 18A is pressed again. In a second example, the controller selects 14 one of the first mode and the second mode in a case where the switch 18A is pressed and held, and the controller 14 selects the other of the first mode and the second mode in a case where the switch 18A pressed and held again.

The configuration of the transmission system 10 can be changed arbitrarily. In one example, the transmission system includes 10 a controller 14 which is configured to switch between a first mode in which the controller 14 The gear T of the human powered vehicle A is automatically controlled in accordance with a switching condition, and to be switched to a second mode in which the controller 14 The gear T not controls. The operating unit 18 includes the switch 18A which can be actuated to assume a first operating position and a second operating position, and the biasing member 18B that the switch 18A biased and moved to the second operating position. An example of the switch 18A is a button switch or a lever switch. The control 14 selects one of the first mode and the second mode in a case where the switch 18A is moved to the first operating position, and selects the other of the first mode and the second mode in a case where the switch 18A is moved to the second operating position.

The type of human powered vehicle A can be changed. In a first example, the human powered vehicle A a road bike, a mountain bike, a cross bike, a City bike, a cargo bike or a recumbent bike. In a second example, the human powered vehicle A a kickroll.

LIST OF REFERENCE NUMBERS

10

transmission system

12

control device

14

control

16

Storage

18

operating unit

18A

switch

18B

biasing member

A

Human powered vehicle

A1

frame

A2

front fork

A3

Rear end

ASP

Adjustable seat post

B

powertrain

BD

braking device

BL

brake lever

BT

battery

C

crank

C1

crankshaft

C2

crank

CO

component

D1

Front sprocket

D2

Rear sprocket

D3

Chain

DD

detection device

DD1

First detector

DD2

Second detector

DD3

Third detector

e

Electric auxiliary unit

E1

electric motor

GR

Handle

H

handlebars

MR

hub

PD

pedal

R

rim

S11-S15

step

S21 - S25

step

SD

saddle

SF

front suspension

SL

gear lever

SU

suspension

T

transmission

TF

Front derailleur

TH

threshold

TH1

First threshold

TH2

Second threshold

TS1

First hatching

TS2

Second hatching rate

TS3

Third hatching rate

TS4

Fourth hatching rate

TS5

Fifth hatching rate

TS6

Sixth hatching rate

TS7

Seventh hatching rate

TS 8

Eighth hatching rate

TR

Rear derailleur

W

wheel

WF

front

WR

rear wheel

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• JP 10511621 A [0002]

Claims (27)

Control device (12), comprising: a controller (14) configured to automatically control a transmission (T) of a human-powered vehicle (A) according to a shift condition; wherein the controller (14) performs predetermined control with respect to the transmission (T) in accordance with information regarding traction of a wheel (W) of the human powered vehicle (A). Control device (12) after Claim 1 wherein the information relating to traction includes information relating to a slip rate of the wheel (W). Control device (12) after Claim 2 wherein the predetermined control includes a control for changing a gear ratio of the human powered vehicle (A). Control device (12) after Claim 3 wherein the controller (14) increases the gear ratio in accordance with information regarding the slip rate in a state where the wheel (W) is spinning or in a state in which it is expected that the wheel is about to spin. Control device (12) after Claim 3 or 4 wherein the controller (14) increases the gear ratio in a case where the slip rate is smaller than a first slip rate (TS1). Control device (12) according to one of Claims 3 to 5 wherein the controller (14) decreases the transmission rate in accordance with information related to the slip rate in a state where the wheel (W) is locked or in a state where the wheel (W) is expected to be in the process to block. Control device (12) according to one of Claims 3 to 6 wherein the controller (14) reduces the gear ratio in a case where the slip rate is greater than or equal to a second slip rate (TS2). Control device (12) according to one of Claims 3 to 7 in which, in a case where the slip rate is greater than or equal to a third slip rate (TS3) and less than a fourth slip rate (TS4), the controller (14) does not change the gear ratio for the slip rate. Control device (12) according to one of Claims 3 to 8th wherein the controller (14), after changing the gear ratio according to the slip rate, changes the gear ratio according to the first changed information different from the slip rate. Control device (12) after Claim 9 wherein the first changed information includes at least one of an elapsed time from the change of the gear ratio according to the slip rate and a condition of a road surface on which the human powered vehicle (A) is traveling. Control device (12) after Claim 10 wherein the controller (14) changes the gear ratio in a case where the elapsed time is greater than or equal to a predetermined time. Control device (12) after Claim 10 or 11 wherein the controller (14) changes the gear ratio in a case where the condition of the road surface is stable. Control device (12) according to one of Claims 9 to 12 wherein the controller (14) changes the gear ratio according to the first changed information such that the gear ratio coincides with the gear ratio before the change according to the slip rate, approaches the gear ratio before the change according to the slip rate, or coincides with the gear ratio according to the shift condition. Control device (12) according to one of Claims 2 to 13 wherein the predetermined control includes a control for changing the switching condition. Control device (12) after Claim 14 wherein the controller (14) changes the transmission condition in a case where the slip rate is less than a fifth slip rate (TS5). Control device (12) after Claim 14 or 15 wherein the controller (14) changes the transmission condition in a case where the slip rate is greater than or equal to a sixth slip rate (TS6). Control device (12) according to one of Claims 14 to 16 In a case where the slip rate is greater than or equal to a seventh slip rate (TS7) and less than an eighth slip rate (TS8), the controller (14) does not change the switching condition. Control device (12) according to one of Claims 14 to 17 wherein, after changing the switching condition according to the slip rate, the controller (14) changes the switching condition according to the second changed information different from the slip rate. Control device (12) after Claim 18 wherein the second changed information includes at least one of an elapsed time from the change of the shift condition according to the slip rate and a condition of a road surface on which the human powered vehicle (A) is traveling. Control device (12) after Claim 19 wherein the controller (14) changes the switching condition in a case where the elapsed time is greater than or equal to a predetermined time. Control device (12) after Claim 19 or 20 wherein the controller (14) changes the gear ratio in a case where the condition of the road surface is stable. Control device (12) according to one of Claims 18 to 21 wherein the controller (14) changes the switching condition according to the second changed information such that the switching condition coincides with the switching condition before the change according to the slip rate, or approaches the switching condition before the change according to the slip rate. A transmission system (10) comprising: the control device (12) according to any one of Claims 1 to 22 ; and the transmission (T). Transmission system (10) comprising: a controller (14) configured to be switched between a first mode in which the controller (14) automatically controls a transmission (T) of a human powered vehicle (A) according to a shift condition and a second mode the controller (14) does not control the transmission (T); and an actuator unit (18) having an actuatable switch (18A), the controller (14) selecting one of the first mode and the second mode in a state in which the switch (18A) is operated, and the controller (14) automatically selects the other one of the first mode and the second mode in a state where the switch (18A) is no longer operated. Transmission system (10) after Claim 24 wherein, after a predetermined time has passed that elapses when the controller (14) selects one of the first mode and the second mode or when the controller (14) detects that the switch (18A) is not actuated, the controller ( 14) automatically selects the other one of the first mode and the second mode. Transmission system (10) after Claim 24 wherein the switch (18A) is configured to be actuated to assume a first actuation position and a second actuation position, the actuation unit (18) further includes a biasing member (18B) configured to bias the switch (18A) and in the second operating position, the controller (14) selects one of the first mode and the second mode in a case where the switch (18A) is moved to the first operating position, and the controller (14) the other of the first mode and the second mode in a case where the switch (18A) is moved to the second operating position. Transmission system (10) comprising: a controller (14) configured to be switched between a first mode in which the controller (14) automatically controls a transmission (T) of a human powered vehicle (A) according to a shift condition and a second mode the controller (14) does not control the transmission (T); and an actuator unit (18) including a switch (18A) capable of assuming a first actuation position and a second actuation position and a biasing member (18B) biasing the switch (18A) and moving it to the second actuation position, the controller (18) 14) selects one of the first mode and the second mode in a case where the switch (18A) is moved to the first operating position, and the controller (14) selects the other one of the first mode and the second mode in a case where the switch (18A) is moved to the second operating position.

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