JP2016060304A - Gear change operation transmission device and transmission of saddle-riding type vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gear change operation transmission device of a saddle-riding type vehicle which enables reliable detection of gear change action of a shift pedal and improvement of the operation feeling, and to provide a transmission of a saddle-riding type vehicle.SOLUTION: Operation detection means 45 includes: a piston 33; a cylinder 38; and a hydraulic sensor 37. The piston 33 is provided at one of an input side member 29 and an output side member 30. The cylinder 38 is provided at the other of the input side member 29 and the output side member 30. The piston 33 is fitted into the cylinder 38 so as to move forward or rearward to form a hydraulic chamber 41. The hydraulic sensor 37 detects a hydraulic oil pressure in the hydraulic chamber 41.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a transmission operation transmission device and a transmission for a saddle-ride type vehicle such as a motorcycle.

  Some saddle-ride type vehicles such as motorcycles change the gear position of the transmission by operating a shift pedal. In the case of this type of saddle-ride type vehicle, the shift pedal and the transmission operation unit of the transmission main body are connected by a transmission operation transmission device such as a shift link. In the case of this saddle-ride type vehicle, when the driver depresses or pushes up the shift pedal with the toes, the operation is transmitted to the shift operation section of the transmission main body via the shift operation transmission device, and as a result The gear stage of the transmission is changed.

  Further, in this type of saddle-ride type vehicle, there is known a vehicle equipped with a mechanism capable of instantaneously changing a gear position of a transmission without a driver performing a clutch connecting / disconnecting operation or an accelerator returning operation. This mechanism makes it possible to detect a minute operation behavior during a shift operation by a sensor, and when the sensor detects an up operation or a down operation of a shift pedal, the mechanism of the power transmission system in the transmission is cut by ignition cut of the engine or the like. Decrease the torque while changing the gear meshing of the transmission.

  As a shift operation transmission device used in such a saddle-ride type vehicle, a device that incorporates a mechanism that detects a minute behavior associated with a shift operation of a shift pedal is known (see, for example, Patent Document 1).

In the shift operation transmission device described in Patent Document 1, an input side member connected to a shift pedal and an output side member connected to a shift operation portion of a transmission main body are fitted so as to be relatively displaceable along the axial direction. The input side member and the output side member are biased so as to be maintained at the neutral position by a pair of springs acting in the opposite directions. And between the input side member and the output side member, the displacement detection sensor which detects the relative displacement between both is provided.
In the case of this transmission operation transmission device, when the input side member and the output side member are relatively displaced in the compression direction or the pulling direction when the shift pedal is up or down, the relative displacement can be detected by the displacement detection sensor. .

German Patent Application Publication No. 102010015037

However, the conventional shift operation transmission device has a structure in which the input side member and the output side member overcome relative force of the spring during the shift operation of the shift pedal, and the relative displacement is detected by the displacement detection sensor. Therefore, it is difficult to achieve both reliable detection of the relative displacement and maintenance of operation feeling.
That is, in the conventional transmission operation transmission device, when the set load of the spring that biases both the input side member and the output side member to the neutral position is reduced in order to reliably detect the relative displacement between the input side member and the output side member, It becomes difficult to be transmitted in a linear manner to the transmission operation section of the transmission main body, and conversely, if the set load of the spring is set large, the operation force of the shift pedal can be transmitted linearly to the transmission operation section of the transmission main body. However, it becomes difficult to detect the relative displacement between the input side member and the output side member.

  Therefore, the present invention is intended to provide a shift operation transmission device and a transmission for a saddle-ride type vehicle that can reliably detect the shift behavior of the shift pedal and improve the operation feeling.

  In order to solve the above-described problems, a transmission operation transmission device for a saddle-ride type vehicle according to the present invention includes an input side member (29) coupled to a shift pedal (25), and a transmission operation portion (23) of the transmission main body. An output side member (30) coupled to the input side, and an operation detection means for detecting at least one of a compression side operation and a tension side operation between the input side member (29) and the output side member (30) (45), the operation detecting means (45) is one of the input side member (29) and the output side member (30). The piston (33) is provided on the other side of the input side member (29) and the output side member (30), and the piston (33) is movably inserted into the hydraulic chamber (41). A cylinder (38) to be formed and a hydraulic pressure sensor for detecting the hydraulic pressure in the hydraulic pressure chamber (41). A compression side operation between the input side member (29) and the output side member (30) based on the hydraulic pressure detected by the hydraulic pressure sensor (37) and the tension side. At least one of the operations was detected.

  In this case, when the shift pedal (25) is operated by the driver, a load in the compression direction or the pulling direction is input from the shift pedal (25) to the input side member (29). As a result, the pressure in the hydraulic chamber (41) increases or decreases, and the transmission operation section of the transmission main body is operated through the output side member (30). At this time, a change in increase or decrease in pressure in the hydraulic chamber (41) is detected by the hydraulic sensor (37).

The cylinder (38) may be formed integrally with either the input side member (29) or the output side member (30).
In this case, the structure of the member of the input side member (29) and the output side member (30) on the side where the cylinder (38) is provided is simplified. For this reason, it is possible to reduce the size of the entire transmission operation transmission device (28) and reduce the manufacturing cost.

A biasing member (43) for biasing the piston (33) to apply an initial hydraulic pressure to the hydraulic pressure in the hydraulic chamber (41) may be provided.
In this case, even when a load is input from the shift pedal (25) to the input side member (29) in either the compression direction or the pulling direction, the pressure in the hydraulic chamber (41) decreases below the atmospheric pressure. It becomes difficult. Therefore, inflow of air into the hydraulic chamber (41) can be prevented.

The hydraulic sensor (37) is preferably disposed at a position below the cylinder (38) in a vehicle-mounted state.
In this case, since the weight of the hydraulic sensor (37) is added to the lower side of the cylinder (38), the shift operation transmission device (28) is unlikely to be unbalanced. Therefore, the smooth operation of the transmission operation transmission device (28) can be obtained.

It is desirable that the input side member (29) and the output side member (30) are disposed below the operation portion of the shift pedal (25) in a vehicle mounted state.
In this case, when the shift pedal (25) is operated, the operation part of the shift pedal (25) and the driver's foot are less likely to interfere with the hydraulic pressure sensor (37).

  In order to solve the above-described problems, a transmission for a saddle-ride type vehicle according to the present invention includes any one of the shift operation transmission devices described above.

  According to the present invention, since the load in the compression direction or the pulling direction input from the shift pedal to the input side member is detected by the hydraulic sensor as a change in pressure in the hydraulic chamber, the relative relationship between the input side member and the output side member The shift behavior of the shift pedal can be reliably detected without securing a large displacement. Therefore, according to the present invention, it is possible to reliably detect the shift behavior of the shift pedal and improve the operation feeling.

It is a side view of the transmission which concerns on one Embodiment of this invention. 1 is a partial cross-sectional side view of a part of a transmission according to an embodiment of the present invention. It is a hydraulic-load characteristic figure of the shift operation transmission device concerning one embodiment of this invention.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the drawings, the arrow FR indicates the front of the vehicle, and the arrow UP indicates the upper side of the vehicle. In the following description, unless otherwise specified, up and down and front and rear mean up and down and front and rear in a state of being attached to a vehicle.

  FIG. 1 is a diagram showing a left side surface of a transmission 20 employed in a motorcycle that is one form of a saddle-ride type vehicle. The transmission 20 of this embodiment is formed integrally with the engine 10 as a power unit PU. In the power unit PU, the crankcase 12 of the engine 10 that rotatably supports the crankshaft 11 also serves as the transmission case of the transmission 20. A cylinder portion 13 of the engine 10 projects from the upper front side of the crankcase 12 toward the upper front side. A main shaft 21 of the transmission 20 is disposed below the rear portion of the crankshaft 11 in the crankcase 12, and a counter shaft 22 of the transmission 20 is disposed obliquely above the rear portion of the main shaft 21.

  A shift operation shaft 23 for operating a shift drum (not shown) of the transmission 20 is disposed below the rear portion of the installation portion of the main shaft 21 in the crankcase 12. In this embodiment, the speed change operation shaft 23 constitutes a speed change operation part of the transmission main body. One end of the speed change operation shaft 23 protrudes outward from the left end surface of the crankcase 12. An input arm 24 is coupled to the left protrusion of the speed change operation shaft 23 so as to be integrally rotatable by serration coupling or the like. The input arm 24 extends substantially vertically downward from the speed change operation shaft 23.

  A pivot shaft 26 of the shift pedal 25 is pivotally supported on the lower rear edge of the left side of the crankcase 12 so as to be rotatable. The shift pedal 25 has an operation arm piece 25a extending from the pivot shaft 26 to the front side of the vehicle body and a connecting arm piece 25b extending from the pivot shaft 26 to the vehicle body lower side. A pedal shaft 27 (operation portion) that protrudes outward in the vehicle width direction is supported on the extended end of the operation arm piece 25a.

  Further, the end portion of the input arm 24 extending downward from the speed change operation shaft 23 and the extension end of the connecting arm piece 25 b of the shift pedal 25 are connected by a speed change operation transmitting device 28. The transmission operation transmission device 28 includes an input side member 29 that is rotatably connected to the connecting arm piece 25 b of the shift pedal 25, and an output side member 30 that is rotatably connected to the input arm 24. .

FIG. 2 is a partial cross-sectional side view of a part of the transmission 20 with the shift operation transmission device 28 as the center.
As shown in the figure, the input side member 29 includes an input rod 31 whose rear end portion is rotatably connected to the shift pedal 25, and a piston unit 32 coaxially and integrally coupled to the front end portion of the input rod 31. And. The piston unit 32 has a short-axis columnar piston 33, and a first guide shaft portion 34 and a second guide shaft portion 35 having a smaller diameter than the piston 33 are integrally formed on the rear side and the front side of the piston 33. Yes. The first guide shaft portion 34 and the second guide shaft portion 35 are formed coaxially with the piston 33.

  The output side member 30 includes a cylinder block 36 whose front end portion is rotatably connected to the lower end of the input arm 24, and a hydraulic sensor 37 attached to the cylinder block 36. The cylinder block 36 is provided with a cylinder 38 into which the piston 33 of the piston unit 32 is slidably inserted along the axial direction, and a sensor mounting portion 39 bulging vertically below the cylinder 38. The cylinder 38 is open at the rear end side, and the opening portion is closed by the lid member 40. The first guide shaft portion 34 of the piston unit 32 passes through the lid member 40 so as to be slidable. A hydraulic chamber 41 is provided between the bottom of the cylinder 38 and the piston 33, and a spring accommodating chamber 42 is provided between the lid member 40 and the piston 33. The hydraulic chamber 41 is filled with hydraulic oil, and the spring accommodating chamber 42 accommodates a biasing spring 43 (biasing member) that biases the piston 33 forward.

  The sensor attachment portion 39 is formed with an introduction passage 39 a for introducing the hydraulic pressure of the hydraulic oil in the hydraulic chamber 41 into the detection portion of the hydraulic sensor 37. Further, a connection point P1 with the shift pedal 25 on the rear end side of the input side member 29 and a connection point P2 with the input arm 24 on the front end side of the output side member 30 are in relation to the central axis c of the piston 33 and the cylinder 38. Located on the extension.

  Further, a stopper hole 44 into which the front end portion of the second guide shaft portion 35 of the piston unit 32 is slidably fitted is formed in the bottom portion of the cylinder 38 of the cylinder block 36. The stopper hole 44 regulates the forward displacement of the piston 33 (piston unit 32) by the bottom of the second guide shaft portion 35 of the piston unit 32 being attached to the bottom.

  Here, the urging spring 43 accommodated in the spring accommodating chamber 42 applies an initial hydraulic pressure larger than the atmospheric pressure to the hydraulic pressure in the hydraulic chamber 41 by urging the piston 33 forward. The input side member 29 and the output side member 30 can be relatively moved in a minute range in the compression direction and the pulling direction in a state where the urging force (initial hydraulic pressure) by the urging spring 43 is applied to the hydraulic pressure of the hydraulic chamber 41. Has been.

FIG. 3 is a graph showing the relationship between the operation load input to the input side member 29 and the hydraulic pressure in the hydraulic chamber 41. In the figure, P0 is an initial hydraulic pressure of the hydraulic chamber 41, and F0 is an initial load by the biasing spring 43.
As shown in the figure, since the operation load and the hydraulic pressure in the hydraulic chamber 41 are in a substantially direct relationship, the shift pedal 25 is pushed down based on the hydraulic pressure in the hydraulic chamber 41 detected by the hydraulic sensor 37. The presence or absence of a push-up operation can be determined.

  That is, when an operation load in the compression direction is input from the input side member 29 to the output side member 30 by the push-up operation of the shift pedal 25, the pressure in the hydraulic chamber 41 rises above the initial hydraulic pressure P0. Based on the detection result of the sensor 37, it can be determined that the shift pedal 25 has been pushed up. On the other hand, when an operation load in the pulling direction is input from the input side member 29 to the output side member 30 due to the pressing operation of the shift pedal 25, the pressure in the hydraulic chamber 41 decreases from the initial hydraulic pressure P0. Based on the detection result of the sensor 37, it can be determined that the shift pedal 25 has been pushed down.

  In this embodiment, the operation detecting means 45 for detecting the compression side operation and the tension side operation between the input side member 29 and the output side member 30 includes the piston 33, the cylinder 38, and the hydraulic pressure sensor described above. 37 is mainly configured. In this embodiment, the transmission 20 includes a transmission operation shaft 23, an input arm 24, and a transmission operation transmission device 28 in addition to a transmission main body having a transmission mechanism.

  By the way, in the motorcycle according to this embodiment, when the driver changes the gear position of the transmission 20, the driver does not perform the clutch connecting / disconnecting operation or the accelerator returning operation, and the up operation of the shift pedal 25 is performed. And a mechanism that can change the gear position only by a down operation. In this mechanism, the controller determines whether the shift pedal 25 is up-operated or down-operated based on the detection value of the hydraulic pressure sensor 37 of the transmission operation transmission device 28. When the controller determines that the shift pedal 25 has been operated up or down, the controller reduces the torque of the power transmission system in the transmission 20 by cutting off the ignition of the engine, etc. 25 is allowed to change the gear position (change in gear meshing).

  Further, in the shift operation transmission device 28 of this embodiment, the hydraulic pressure sensor 37 is disposed below the cylinder 38 when mounted on the vehicle. Furthermore, the shift operation transmission device 28 is disposed at a position below the pedal shaft 27 that is the operation portion of the shift pedal 25 in the vehicle mounted state.

  As described above, the shift operation transmission device 28 according to this embodiment is configured so that the load in the compression direction or the pulling direction input from the shift pedal 25 to the input side member 29 is changed by the hydraulic sensor 37 as a change in pressure in the hydraulic chamber 41. Detected. Therefore, the shift behavior of the shift pedal 25 can be reliably detected based on the detection result of the hydraulic sensor 37 without setting a large relative displacement between the input side member 29 and the output side member 30. Therefore, when this shift operation transmission device 28 is employed, the shift behavior of the shift pedal 25 can be reliably detected and the operation feeling can be improved.

  Further, the cylinder 38 forming the hydraulic chamber 41 can be formed by a member different from the main body of the output side member 30, but in the case of the speed change operation transmission device 28 according to this embodiment, the cylinder 38 has an output. It is formed integrally with the main body of the side member 30. For this reason, in the case of this embodiment, the structure of the output side member 30 can be simplified, and the shift operation transmission device 28 as a whole can be reduced in size and manufacturing cost.

  In the shift operation transmission device 28 according to this embodiment, an urging spring that urges the piston 33 between the input side member 29 and the output side member 30 to apply the initial hydraulic pressure to the hydraulic pressure in the hydraulic chamber 41. 43 is provided. For this reason, even when a load is input from the shift pedal 25 to the input side member 29 in either the compression direction or the pulling direction, the pressure in the hydraulic chamber 41 is less likely to drop below atmospheric pressure. Therefore, when the shift operation transmission device 28 according to the embodiment is employed, it is possible to prevent air from easily flowing into the hydraulic chamber 41 by one operation of the shift pedal 25.

  Furthermore, the shift operation transmission device 28 according to this embodiment has the hydraulic sensor 37 disposed at a position below the cylinder 38 in the vehicle mounted state, so that the center of gravity of the shift operation transmission device 28 is lowered and the operation is performed. There is an advantage that sometimes it is difficult to be unbalanced. Therefore, according to the shift operation transmission device 28 according to this embodiment, a smooth operation can be always obtained.

  Further, in the shift operation transmission device 28 according to this embodiment, the input side member 29 and the output side member 30 are arranged at positions below the pedal shaft 27 of the shift pedal 25 in the vehicle mounted state. There is an advantage that the pedal shaft 27 and the driver's foot are less likely to interfere with the hydraulic pressure sensor 37 during the shift operation of the shift pedal 25.

In addition, this invention is not limited to said embodiment, A various design change is possible in the range which does not deviate from the summary. For example, in the above embodiment, the piston 33 is formed on the input side member 29 and the cylinder 38 is formed on the output side member 30. Conversely, the piston 33 is formed on the output side member 30 and the cylinder 38 is formed. May be formed on the input side member 29. Further, in the above embodiment, the displacement in the compression direction and the tension direction between the input side member 29 and the output side member 30 is detected by the hydraulic sensor 37, but either one of the compression direction and the tension direction is detected. Only the displacement may be detected by the hydraulic sensor 37.
Vehicles to which the present invention is applied are not limited to motorcycles (including motorbikes and scooter type vehicles), but also three-wheel vehicles (including front-wheel and rear-wheel vehicles as well as front-wheel and rear-wheel vehicles) or four-wheel vehicles. A small wheeled vehicle is also included.

20 ... Transmission 23 ... Transmission operation shaft (transmission operation section of transmission body)
25 ... Shift pedal 27 ... Pedal shaft (shift pedal operation part)
DESCRIPTION OF SYMBOLS 28 ... Transmission operation transmission device 29 ... Input side member 30 ... Output side member 33 ... Piston 37 ... Hydraulic sensor 38 ... Cylinder 41 ... Hydraulic chamber 43 ... Biasing spring (biasing member)
45. Operation detection means

Claims (6)

An input side member (29) coupled to the shift pedal (25);
An output side member (30) connected to a transmission operation portion (23) of the transmission main body;
Operation detecting means (45) for detecting at least one of a compression side operation and a pull side operation between the input side member (29) and the output side member (30);
In a shift operation transmission device (28) for a saddle-ride type vehicle equipped with
The operation detecting means (45)
A piston (33) provided on any one of the input side member (29) and the output side member (30);
A cylinder (38) provided on one of the input side member (29) and the output side member (30), the piston (33) being slidably fitted therein to form a hydraulic chamber (41);
A hydraulic pressure sensor (37) for detecting the hydraulic pressure in the hydraulic pressure chamber (41),
Based on the hydraulic pressure detected by the hydraulic sensor (37), at least one of the compression side operation and the tension side operation between the input side member (29) and the output side member (30) is detected. A shift operation transmission device for a saddle-ride type vehicle.   The shift of the saddle-ride type vehicle according to claim 1, wherein the cylinder (38) is integrally formed with one of the input side member (29) and the output side member (30). Operation transmission device.   The urging member (43) according to claim 1 or 2, further comprising an urging member (43) for urging the piston (33) to apply an initial hydraulic pressure to the hydraulic pressure in the hydraulic chamber (41). A transmission operation transmission device for a riding type vehicle.   The saddle riding type vehicle according to any one of claims 1 to 3, wherein the hydraulic sensor (37) is disposed at a position below the cylinder (38) in a vehicle-mounted state. Gear shifting operation transmission device.   The said input side member (29) and the output side member (30) are arrange | positioned below the operation part (27) of the said shift pedal (25) in the vehicle mounting state. A shift operation transmission device for a saddle-ride type vehicle according to claim 1.   A transmission for a saddle-ride type vehicle, comprising the shift operation transmission device according to any one of claims 1 to 5.

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