JPH0529863B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a shift feeling evaluation method for quantitatively evaluating the weight of a shift operation of a manual transmission mounted on an automobile or the like.

(Prior Art) A manual transmission installed in an automobile etc. usually has an input shaft, a counter shaft rotated by the input shaft, and an output shaft arranged parallel to the counter shaft.
It has multiple gear trains that transmit the rotation of the input shaft to the output shaft via the counter shaft, and when the shift lever is shifted, the rotation occurs on the output shaft of the gears that make up the multiple gear trains. One of the freely arranged gears is coupled to the output shaft via a synchronized mesh mechanism to obtain a gear position corresponding to the gear ratio of the gear train including the gear, and the input shaft is connected to the output shaft via the synchronized mesh mechanism. The output shaft is connected to the output shaft so that one gear stage can be obtained.

The synchronized meshing mechanism installed in a manual transmission basically consists of a clutch hub that is fitted and fixed to the output shaft and has spline teeth formed on its outer periphery, and spline teeth that mesh with the clutch hub formed on its inner periphery. A clutch gear that has spline teeth formed on its outer periphery and is rotatably disposed on the output shaft or is provided integrally with a gear (synchronized gear) fixed to the input shaft. When the shift lever is operated, the coaxial sleeve moves along the output shaft, and the spline teeth formed on the synchronizing sleeve contact both the spline teeth formed on the clutch hub and the spline teeth formed on the clutch gear. They are designed to straddle and mesh, and the rotation of the synchronized gear is transmitted to the output shaft via the clutch gear, synchronizing sleeve, and clutch hub.

In order to smoothly mesh the spline teeth of the synchronizing sleeve and the spline teeth of the clutch gear, the synchronizing meshing mechanism having such a configuration has two mechanisms: the rotation of the output shaft, which rotates integrally with the synchronizing sleeve, and the rotation of the output shaft, which is arranged on the output shaft or the input shaft. It is necessary to synchronize the rotation of the synchronized gear, and generally, a synchronization ring is disposed between the synchronization sleeve and the clutch gear, and the synchronization ring has spline teeth formed on the outer periphery that mesh with the spline teeth of the synchronization sleeve. Chamfers are formed at the ends of spline teeth formed on each of the sleeve, synchronization ring, and clutch gear to separate them into a positional relationship in which they can mesh.

In a synchronizing mesh mechanism having such a synchronizing ring, the synchronizing sleeve is moved toward the clutch gear by operating the shift lever, and the synchronizing ring is moved by the synchronizing key attached to the synchronizing sleeve. When pressed, the synchronizing ring is moved toward the clutch gear. As a result, the synchronizing ring is fitted into the cone part of the synchronized gear that protrudes toward the synchronizing sleeve, and due to the frictional force generated between the synchronizing ring and the cone part, the output shaft and clutch hub The rotation of the synchronized gear is synchronized with the rotation of the synchronization sleeve. With the rotation of the synchronizing sleeve and the rotation of the synchronized gear being synchronized in this way, the scraping action is performed by the spline teeth formed on the synchronizing sleeve, and the spline teeth formed on the synchronizing sleeve It engages with spline teeth formed on the synchronizing ring. From this state, the synchronizing sleeve is further moved, and the spline teeth formed on the synchronizing sleeve move against the spline teeth formed on the clutch gear, so that the spline teeth formed on the synchronizing sleeve and the clutch gear are moved. This results in meshing with the spline teeth.

(Problems to be Solved by the Invention) As described above, in the synchronizing mesh mechanism, during the shift operation of the shift lever, the synchronizing sleeve and the clutch gear are synchronized, the spline teeth of the synchronizing sleeve are moved against the spline teeth of the synchronizing ring, and The meshing action, the scraping and meshing action of the spline teeth of the synchronizing sleeve against the spline teeth of the clutch gear are performed sequentially, and with each of these sequential actions, the load acting on the shift lever and the operating speed of the shift lever increase over time. It changes over time. Changes in the load acting on the shift lever and the operating speed of the shift lever affect the quality of the feeling of the shift operation, such as the weight, smoothness, and moderation of the shift lever.

Therefore, during the development stage of manual transmissions, the design was advanced so that the operator could obtain a good shift feeling when operating the shift lever, and a prototype was manufactured. Tests are conducted to evaluate shift feeling, and tests are also conducted to evaluate shift feeling in the final process of the production stage.

However, since tests to evaluate shift feeling are usually conducted based on the operator's sense, even if the transmission is the same, the evaluation will be different. As the specifications of each component are selected intuitively, it is difficult to make an accurate design.Moreover, in order to find the optimal specifications, each component must be sequentially reassembled with one with different specifications. Tests for each of these would have to be repeated, creating the problem of requiring a huge amount of development man-hours, and also causing the problem of difficulty in achieving uniform quality at the production stage. be.

To solve these problems, quantitative evaluation of shift feeling has been considered, and one method is to evaluate the weight of a shift operation based on the peak value of the load applied to the shift lever. However, with this evaluation method, the peak value of the load applied to the shift lever varies depending on the operating speed of the shift lever, etc. even for the same transmission, so it is possible to obtain a uniform evaluation. It is difficult to do so. Furthermore, even if the peak value is constant, the operator's perception of the weight of the shift operation will vary depending on the duration of the peak value, the magnitude of the load before and after the peak value, etc. There is a problem in that it is difficult to accurately evaluate the feeling.

In view of the above, the present invention provides a manual transmission equipped with a synchronizing mesh mechanism including a synchronizing sleeve and a synchronizing ring, in which the weight of the shift operation on the shift lever is determined by the operator's sense. It is an object of the present invention to provide a shift feeling evaluation method that can be quantitatively evaluated without any problem, and the evaluation is suitable for the operator's feeling of the weight of a shift operation.

(Means for Solving the Problems) In order to achieve the above-mentioned object, a shift feeling evaluation method according to the present invention provides a shift feeling evaluation method in which one of a plurality of gear trains provided in a manual transmission is connected to a synchronous sleeve or a synchronous ring. The shift lever provided in the manual transmission is operated to shift the shift lever provided in the manual transmission in order to transmit power through the synchronization meshing mechanism that includes the synchronization sleeve and the synchronization ring. The period from the start of the synchronous operation, when the spline teeth formed on the synchronous sleeve begin to engage with the spline teeth formed on the synchronous ring, until the end of the raking operation, when the spline teeth formed on the synchronous sleeve complete the raking operation. Acts on the shift lever during the period up to the completion of the synchronous operation when the rotational speed and the rotational speed of the synchronized gear to be synchronized with the rotation of the synchronization sleeve match, or during the period from the completion of the synchronous operation to the completion of the raking operation. Measure the load,
The measured load data is used to calculate the impulse in any one, two, or all of the periods, and the weight of the shift operation at the shift lever is evaluated based on the calculated impulse. be done.

(Function) In the shift feeling evaluation method according to the present invention having the above-described configuration, the shift feeling of the shift lever is adjusted during the synchronized operation of the synchronizing sleeve and the synchronizing ring provided in the synchronized meshing mechanism, which is performed at the time of shift operation of the shift lever. The load acting on the shift lever and the load acting on the shift lever during the subsequent raking operation are measured, the impulse is calculated, and the weight of the shift operation is evaluated based on the impulse.

Specifically, the first method uses data obtained by measuring the load to calculate the impulse during the synchronous movement and the raking movement, and evaluates the weight of the shift operation based on the impulse. The second method uses the data obtained to calculate the impulses during the synchronized movement and the plowing movement individually, and evaluates the weight of the shift operation based on them, using the data obtained by measuring the load. The third method is to calculate the impulse during synchronous movement and evaluate the weight of the shift operation based on it.The third method uses data limited by load measurement to calculate the impulse and synchronization during synchronous movement and plowing movement. A fourth method calculates the impulse during each movement and evaluates the weight of the shift operation based on them, or calculates the impulse during synchronous movement and plowing movement using data obtained by measuring the load. A fifth mode is adopted in which the impulse during the synchronous operation and the impulse during the raking operation are calculated, respectively, and the weight of the shift operation is evaluated based on them.

According to the shift feeling evaluation method according to the present invention, the weight of the shift operation is quantitatively evaluated by the impulse value calculated based on the load acting on the shift lever, and such evaluation is , it is adapted to the feeling of the weight of the shift operation received by the operator.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 shows a test device for evaluating the shift feeling of a manual transmission (hereinafter simply referred to as a transmission) used to implement an example of the shift feeling evaluation method according to the present invention. 2 schematically shows how the transmissions to be used are arranged.

The test device 10 is connected to a motor 11 that drives the transmission 1, a clutch 13 disposed on the input shaft 12 of the transmission 1, and an output shaft 14 of the transmission 1, and is equipped with the transmission 1. It has a flywheel 15 that applies an inertial mass equivalent to that of a vehicle body to the output shaft 14 of the transmission 1, and an actuator 17 that operates the shift lever 2 for changing the gear stage of the transmission 1 according to a predetermined manner. In addition, a motor rotation speed sensor 21 detects the rotation speed of the motor 11 and sends out a detection signal Sm corresponding to the detected rotation speed, and a motor rotation speed sensor 21 detects the rotation speed of the input shaft 12 of the transmission 1 and outputs a detection signal Sm corresponding to the detected rotation speed. Input shaft rotation speed sensor 2 that sends out a detection signal Si according to
2. An output shaft rotation speed sensor 23 that detects the rotation speed of the output shaft 14 and sends out a detection signal So corresponding to the rotation speed, detects the load acting on the shift lever 2 and its stroke, and detects the load and stroke. The load sensor 26 and the stroke sensor 27, which send out detection signals Sw and Ss corresponding to It is arranged in

Detection signals Sm, Si, and So obtained from the motor rotation speed sensor 21, input shaft rotation speed sensor 22, and output shaft rotation speed sensor 23 are supplied to F/V (frequency-voltage) conversion circuits 31, 32, and 33, respectively. After that, it is digitized in A/D (analog/digital) conversion circuits 34, 35 and 38,
be digital signals Sm′, Si′ and So′, respectively,
The output terminals of the A/D conversion circuits 34, 35, and 38 are supplied to a controller 70 in the data processing unit 60 that includes a CPU (central processing unit), and a controller 90 that includes a CPU in the drive control unit 80. In addition, load sensor 2
6. Stroke sensor 27 and torque sensor 28
The detection signals Sw, Ss and St obtained from
The A/D conversion circuits 36, 37 and 39 digitize the digital signals Sw' and 39, respectively.
Ss' and St' from the output terminals of the A/D conversion circuits 36, 37 and 39 to the controller 70 and drive control unit 80 in the data processing unit 60.
is supplied to the controller 90 at the controller 90 .

The controller 70 in the data processing unit 60 and the controller 90 in the drive control unit 80 receive digital signals Sm', Si', So',
In addition to Sw', Ss' and St', input data signals Dx and
Dy is supplied respectively. Data processing unit 60
In addition to the controller 70, the controller 7
RAM (random RAM) where calculation programs for data processing in 0 are written and read.
access memory) 71, and a RAM 72 in which calculation data obtained in the controller 70 is written and read, and output data signal Oa
is supplied to a calculation output data memory 74 such as a floppy disk device, a printer 75, and a display device 76.

In addition to the controller 90, the drive control unit 80 also reads an arithmetic program for data processing in the controller 90.
It has a ROM (read only memory) 91 and a RAM 92 in which calculation data obtained in the controller 90 is written and read,
In order to supply a control signal Cr to the lamp 83 to turn it on, and to control the operation of the motor 11, clutch 13, and actuator 17, a D/A (digital/analog) conversion circuit converts the control signals Ca, Cb, and Cc into a D/A (digital/analog) conversion circuit. 84, 85 and 86, respectively.

The control signals Ca, Cb and Cc are sent to the D/A conversion circuit 8.
4, 85 and 86, the signals are converted into analog signals and supplied to drive control sections 87, 88 and 89, respectively. The drive control unit 87 generates a drive signal according to the control signal Ca.
Ca' is formed and supplied to the motor 11, and the drive control section 88 sends a drive signal according to the control signal Cb.
Cb' is formed and supplied to the clutch 13. Further, the drive control section 89 forms a drive signal Cc' according to the control signal Cc and supplies it to the actuator 17. The motor 11, clutch 13, and actuator 17 are controlled in accordance with drive signals Ca', Cb', and Cc', respectively.

On the other hand, the transmission 1 is configured to selectively select, for example, four forward speeds and one reverse speed by operating the shift lever 2, and the switching of each speed is shown in FIG. Synchronous mesh mechanism 50 provided in the transmission 1 as shown
It is done through.

The synchronized mesh mechanism 50 shown in FIG. 2 is fitted onto the output shaft 14 of the transmission 1 and rotates with the output shaft 14, and includes a clutch hub 46 having spline teeth 46a formed on the outer periphery thereof. and the spline teeth 46a of the clutch hub 46.
A synchronizing sleeve 47 is formed with spline teeth 47a on its inner periphery and is slidable along the output shaft 14, and spline teeth 46a and 47a on the clutch hub 46 and synchronizing sleeve 47, respectively, are formed on the inner circumference.
A synchronization key 51 is arranged at a plurality of locations in the circumferential direction of the meshing portion of 7a and is pressed against the synchronization sleeve 47 by ring-shaped springs 49a and 49b, and a synchronization key 51 is rotatably arranged on the output shaft 14 and fixed to the counter shaft. Spline teeth 5 are integrally formed with the synchronized gear 52 that meshes with the gear 48 and are meshed with the spline teeth 47a of the synchronization sleeve 47.
3a is formed on the outer periphery of the clutch gear 53;
The clutch hub 4 is integrally formed with the synchronized gear 52.
A synchronization ring 55 is formed with a cone portion 54 protruding toward the 6th side, a cone-shaped inner circumferential surface that fits into the cone portion 54, and spline teeth 55a that mesh with spline teeth 47a of the synchronization sleeve 47 on the outer circumference. A chamfer 47b is formed at both ends of the spline tooth 47a of the synchronization sleeve 47, and a chamfer 47b is formed at both ends of the spline tooth 47a of the synchronization sleeve 47, and a chamfer 47b is formed at both ends of the spline tooth 47a of the synchronization sleeve 47. Chamfers 53b and 55b facing the chamfer 47b are formed at the ends, respectively.

In the synchronized mesh mechanism 50 having such a configuration, when the shift lever 2 is operated to shift up a gear in the transmission 1, for example, the shift lever 2 shifts as shown in FIGS. 3A to 3F. The operations are performed sequentially to connect the synchronized gear 52 to the output shaft 14. At that time, the load L acting on the shift lever 2, the stroke K of the shift lever 2, the rotational speed N of the synchronized gear 52, and the output torque R of the output shaft 14 are as shown in FIGS. 4A to 4D, respectively. It is assumed that this will change.

When the shift operation of the shift lever 2 is started at time t ₀ shown in FIGS. 4A to 4D, the synchronizing sleeve 47 is moved in the direction shown by the arrow y in FIG. 2 (hereinafter referred to as the y direction). . The synchronizing sleeve 47 is moved to the second position by the shift lever 2.
From the neutral state shown in FIGS. 3A and _3A , the clutch gear 5
When the synchronization key 51 is moved to the third side, the synchronization key 51 presses the synchronization ring 55 in the y direction. As a result, the synchronizing ring 55 is moved toward the clutch gear 53, and the cone portion 54 is moved toward the clutch gear 53.
The chamfer 47b formed on the spline teeth 47a of the synchronizing sleeve 47 is pressed against the outer peripheral surface of the fourth
Synchronous ring 5 at time t ₁ shown in Figures A-D
The gear 52 starts to engage with the chamfer 55b formed on the spline tooth 55a of No. 5, and the synchronized gear 52 and the synchronizing sleeve 47 start to synchronize.

At such a time point _t1 , as shown in FIG. 4C, there is a difference between the rotational speed N of the synchronized gear 52 and the rotational speed _N0 of the output shaft 14,
The cone-shaped inner peripheral surface and the outer peripheral surface of the cone portion 54 are in sliding contact, and a frictional force corresponding to the force of the shift lever 2 pressing the synchronization sleeve 47 in the y direction is generated between these sliding surfaces. Due to this frictional force, the rotation of the synchronized gear 52 is synchronized with the rotation of the synchronizing sleeve 47, which rotates integrally with the output shaft 14, via the synchronizing ring 55 and the cone portion 54, as shown in FIG. As shown in FIG. 4C, at time _t2 shown in FIGS. 4A to 4D, the rotational speed N of the synchronized gear 52 and the rotational speed _N0 of the synchronizing sleeve 47 become equal. Such a synchronous operation period Ta from the synchronous operation start time t ₁ when the synchronized gear 52 and the synchronous sleeve 47 begin to synchronize to the synchronous operation completion time t ₂ when the synchronization between the synchronized gear 52 and the synchronous sleeve 47 is completed. In this case, as shown in Figure 4B,
The shift lever 2 is operated with an extremely small stroke value _K2 , and as shown in FIG. 4A, the load L acting on the shift lever 2 is reduced.
However, due to the frictional force generated between the synchronizing ring 55 and the cone portion 54, it becomes relatively large. In addition, as shown in FIG. 4D, the output shaft 1
4 is an output torque R corresponding to the rotational inertia of the synchronized gear 52 and the rotating members rotated by it.
occurs.

In this way, the synchronizing sleeve 47 and the synchronized gear 52
When the synchronization with the synchronization ring 55 is completed, the force in the y direction applied to the synchronization sleeve 47 by the shift lever 2 causes the spline teeth 47a of the synchronization sleeve 47 to move against the spline teeth 55a of the synchronization ring 55. be exposed. During this scraping operation, the synchronizing sleeve 47
is a synchronizing sleeve 4 as shown in FIG. 3B.
The chamfer 47b formed on the spline tooth 47a of No. 7 is connected to the spline tooth 55a of the synchronization ring 55.
The shift lever 2 moves in the y direction by a distance corresponding to the stroke value _K3 of the shift lever 2 shown in FIG. Thereby, the synchronization ring 55 rotates relative to the synchronization sleeve 47 by a certain amount. that time,
Since the synchronizing ring 55 rotates integrally with the synchronized gear 52, there is a difference between the rotational speed N of the synchronized gear 52 and the rotational speed _N0 of the output shaft 14.
A rotational speed difference ΔV ₁ as shown in FIG. 4C occurs.

Then, at time _t3 shown in FIGS. 4A to 4D, the spline teeth 47a of the synchronization sleeve 47 and the spline teeth 55a of the synchronization ring 55 are in a state of meshing as shown in FIG. 3C, and the synchronization sleeve The scraping operation for the synchronization ring 55 by 47 is completed. During the scraping operation period Tb from time t ₂ to time t ₃ during which this scraping operation is performed, the force in the y direction applied to the synchronizing sleeve 47 by the shift lever 2 causes the synchronizing ring 55 and the synchronized gear to 52 is a periodic sleeve 47
Since the shift lever 2 is rotated by a certain amount relative to the shift lever 2, a relatively large load L acts on the shift lever 2, as shown in FIG. 4A.

In this way, at time _t3 , when the synchronizing sleeve 47 completes the scraping operation against the synchronizing ring 55, after the time _t3 , the synchronizing sleeve 47 moves in the y direction, and the synchronizing sleeve 47 moves in the y direction.
The spline teeth 47a of No. 7 and the spline teeth 55a of the synchronization ring 55 are brought into mesh with each other, but at this time, the resistance to the movement of the synchronization sleeve 47 in the y direction is reduced, so that the movement of the synchronization sleeve 47 in the y direction is reduced, as shown in FIG. 4A. , the load L acting on the shift lever 2 rapidly decreases, and the synchronizing sleeve 47 moves easily in the y direction, so that the spline teeth 47a of the synchronizing sleeve 47 are replaced by the spline teeth 55a of the synchronizing ring 55.
mesh with. Then, the synchronization sleeve 47
Stroke value of shift lever 2 shown in Figure B
Figure 4 A-D moved by a distance corresponding to K ₄
At time t ₄ shown in FIG.
The synchronizing sleeve 47 engages with the chamfer 53b formed on the spline tooth 53a of No. 3, and the synchronizing sleeve 47 performs a sweeping action against the clutch gear 53.

When the synchronizing sleeve 47 moves the clutch gear 53, the clutch gear 53 and the synchronized gear 52 are caused to rotate relative to the synchronizing sleeve 47 and the synchronizing ring 55, but this relative rotation causes the cone portion 54 and the synchronizing ring 55 to Immediately after time _t4 , a large load L begins to act on the shift lever 2 again, as shown in FIG. 4A. When the load L exceeds the frictional resistance at the sliding contact surface between the cone portion 54 and the synchronization ring 55, the synchronization ring 55 and the cone portion 54 are caused to rotate relative to each other, thereby causing the synchronization sleeve 47 and the synchronized The gear 52 starts relative rotation.
Then, at the time t ₅ shown in FIGS. 4A to 4D, the synchronizing sleeve 47 has moved by a distance relative to the stroke value K ₅ of the shift lever 2 shown in FIG. 4B.
, the spline teeth 47 of the synchronizing sleeve 47
a and the spline teeth 53a of the clutch gear 53 are in a state of meshing as shown in FIG. 3E. Immediately after such a state is reached, the load L acting on the shift lever 2 rapidly decreases as shown in FIG. 4A, and the rotational speed of the output shaft 14 decreases as shown in FIG. 4C. N ₀ and synchronized gear 5
A rotation speed difference ΔV ₂ occurs between the rotation speed N of the second rotation speed and the rotation speed N of the second rotation speed.

Then, after the phasing operation period Tc in which the synchronous sleeve 47 is raked against the clutch gear 53 from time _t4 to time _t5 has elapsed, the synchronous sleeve 47 is further moved by the operation of the shift lever 2, and the third As shown in FIG. F, the spline teeth 47a of the synchronizing sleeve 47 mesh with the spline teeth 53a of the clutch gear 53, and the coupling operation between the output shaft 14 and the clutch gear 53 is completed.

The testing apparatus shown in FIG. 1 was used to create data used to evaluate the weight of the shift operation of the shift lever 2 in the manual transmission 1 equipped with the synchronized mesh mechanism 50 that operates as described above. 10 is used to carry out the shift feeling evaluation method according to the present invention. At this time, the transmission 1 is first carried into the test apparatus 10.
At this time, the model name of the imported transmission 1 is read, and a data input signal Dx representing the model name is supplied from the data input section 41 to the controller 70 in the data processing unit 60. Test equipment 10 according to
The various parts are set up.

The transmission 1 then connects the test device 10
At the same time, the motor rotation speed sensor 21 and the input shaft rotation speed sensor 2
2. Output shaft rotation speed sensor 23, load sensor 26,
The stroke sensor 27 and the torque sensor 28 are changed from the retracted position to the detection position, and the actuator 17 is arranged to operate the shift lever 2. Further, the rotating shaft of the motor 11 and the input shaft 12 of the transmission 1 are connected via a clutch 13, and the output shaft of the transmission 1 is connected to the flywheel 15.
connected to.

In this way, when the preparation is completed, an input data signal is sent from the data input section 42 instructing the start of the test.
Dy is supplied to a controller 90 in the drive control unit 80. The controller 90 sends out a control signal Cb according to the input data signal Dy. The control signal Cb is supplied to the drive control section 88 through the D/A conversion circuit 85, and the drive control section 88 forms a drive signal Cb' based on the control signal Cb and supplies it to the clutch 13. Thereby, the clutch 13 is brought into the engaged state. Further, the controller 90 sends out a control signal Ca based on the input data signal Dy. The control signal Ca is supplied to the drive control section 87 through the D/A conversion circuit 84, and the drive control section 87 forms a drive signal Ca' based on the control signal Ca and supplies it to the motor 11. As a result, the motor 11 is rotated, and the input shaft 12 is rotated accordingly. Furthermore, the controller 90 determines whether the rotational speed of the motor 11 has reached a predetermined rotational speed based on the digital signal Sm', and when the rotational speed of the motor 11 reaches a predetermined rotational speed, the clutch is activated. 13 is in a cut-off state, a control signal Cb is sent out, and a control signal Cr is also supplied to a lamp 83 to turn it on, indicating that the test apparatus 10 is in a test operation state.

When the clutch 13 is disconnected by the controller 90, the rotational speed of the motor 11 and the input shaft 1
When a rotational speed difference starts to occur between the rotational speed of the transmission 1 and the rotational speed of the transmission 1, and the rotational speed difference exceeds a predetermined value, the controller 90 causes the D/A conversion circuit 86 to switch the gear stage of the transmission 1. Control signal Cc
supply. The control signal Cc is the D/A conversion circuit 8
6 to the drive control unit 89, and the drive control unit 89 generates a control signal based on the control signal Cc.
Cc' is formed and supplied to the actuator 17. Thereby, the actuator 17 is activated.

When the actuator 17 is supplied with the control signal Cc', the actuator 17 performs a shift operation of the shift lever 2 according to a predetermined manner, and shifts the transmission 1.
Change the gear position. Actuator 1
When the shift operation of the shift lever 2 by 7 is completed, the controller 90 sends the control signal Ca again to start operating the motor 11, and when the rotational speed of the motor 11 and the rotational speed of the input shaft 12 match, the control is started. A signal Cb is sent to bring the clutch 13 into the engaged state. The test device 10 performs such operation control in a predetermined order even in other gear shifting operations, and also performs the following operations as necessary:
Switching for each gear stage is performed multiple times by changing the operating pattern such as the rotational speed of the motor 11 and the operation speed of the shift lever 2, and then the operation control for the transmission 1 is completed.

Operation control in the test apparatus 10 is mainly executed by the controller 90 in the drive control unit 80, and an example of a program executed by the controller 90 will be explained with reference to the flowchart in FIG. .

In the program shown in the flowchart of FIG. 5, initial settings are performed in process 101 after the program is started. With this initial setting, the acquisition conditions for various signals are adjusted. Next, in decision 102, it is determined whether or not the input data signal Dy instructing to start the test has arrived, and if it is determined that the input data signal Dy instructing to start the test has not arrived, the input data signal Dy instructing to start the test is determined. The determination is repeated until the input data signal Dy instructing the start of the test arrives, and if it is determined that the input data signal Dy instructing the start of the test has arrived, the control signal Cb is sent in process 103. The clutch 13 is brought into the engaged state and the process 104 continues.
At this point, a control signal Ca is sent out to put the motor 11 into operation. Then, in the decision 105, the motor 11 is controlled based on the digital signal Sm'.
It is determined whether the rotational speed Nm has reached a predetermined value _N1 or more, and if it is determined that the rotational speed Nm has not reached the value _N1 , the process returns to process 104,
Further, if it is determined that the rotational speed Nm has reached the value _N1 or more, in process 106, a control signal Cr is sent out to turn the lamp 83 on.
Subsequently, in process 107, the control signal Cb is sent to disengage the clutch 13, and the process proceeds to decision 108.

In decision 108, it is determined whether the difference ΔNu between the rotational speed Nm of the motor 11 and the rotational speed Ni of the input shaft 12 is greater than or equal to a predetermined value α. If it is determined that the difference ΔNu is not greater than or equal to the predetermined value α, this determination is repeated until the difference ΔNu becomes greater than or equal to the value α, and if it is determined that the difference ΔNu is greater than or equal to the value α, In process 109, the control signal is
Cc is sent out, actuator 17 is actuated to change the gear position in transmission 1, and shift operation of shift lever 2 is performed. After the shift operation of shift lever 2 is completed,
Again, in process 110, the control signal Ca is sent to control the operation of the motor 11, and in decision 111, it is determined whether the rotational speed Nm of the motor 11 matches the rotational speed Ni of the input shaft 12, and the rotational speed is determined. If it is determined that Nm does not match the rotational speed Ni, the process returns to process 110, and if it is determined that the rotational speed Nm matches the rotational speed Ni, the process proceeds to process 112, where the control signal Cb is sending the clutch 13 into the engaged state,
In process 114, the subsequent program is executed, and the other gear shift operations in the transmission 1 are sequentially performed in the same manner as described above, and the program is terminated.

While the above-described operation control in the test apparatus 10 is performed based on the control by the drive control unit 80, data for evaluating the weight of the shift operation of the shift lever 2 is created.
In creating such data, first, the controller 70 in the data processing unit 60
An input data signal Dx that instructs the test apparatus 10 to start creating data is supplied from the data input section 41 .
When the input data signal Dx is supplied, the controller 70 determines that the clutch 13 is in the disconnected state by increasing the rotational speed Nm of the motor 11, which is represented by the digital signal Sm', and the rotational speed of the input shaft 12, which is represented by the digital signal Si'. Detection is made based on the fact that the difference ΔNu from the speed Ni is equal to or greater than a predetermined value α.

Then, based on the stroke value _K1 of the shift lever 2 represented by the digital signal Ss', the time _t1 shown in FIG. The rotational speed N of the synchronized gear 52 is calculated based on the gear ratio in mission 1, and based on the digital signal So', as shown in FIG. 4C,
A time t ₂ when the rotation speed N of the synchronized gear 52 matches the rotation speed No of the output shaft 14 is detected. Note that the rotational speed N of the synchronized gear 52 changes during the synchronous operation period as shown in FIG. 4C when the gear stage in the transmission 1 is shifted up.
Ta decreases, but when the gear stage in transmission 1 is downshifted, it increases during the synchronous operation period Ta, and at time _t2 when the synchronous operation is completed,
This corresponds to the rotational speed No. of the output shaft 14.
Then, during the synchronous operation period Ta, the load L acting on the shift lever 2 is measured based on the digital signal Sw', the impulse is determined and integrated using the data obtained, and the integrated impulse is calculated. It is stored in the RAM 72 as synchronous impulse Fa.

Furthermore, from time t ₂ shown in FIG. 4, the stroke K of the shift lever 2 changes to a stroke value K ₁ ,
During the shifting operation period Tb up to time _t3 , which is the sum of _K2 and _K3 , the load L acting on the shift lever 2 is measured based on the digital signal Sw', and the impulse is calculated using the data obtained. Find and integrate the integrated impulse, and divide the integrated impulse to find the impulse Fb
It is stored in the RAM 72 as . Then, the obtained synchronous impulse Fa and the shifting impulse Fb are added to calculate the shifting impulse Fc in the shifting period Tb corresponding to the sum of the synchronous motion period Ta and the shifting motion period Tb, and this shifting impulse The product Fc is stored in the RAM 72.

Thereafter, in the same manner, each time a gear shift operation is performed in transmission 1, the synchronous impulse Fa, the sweeping impulse Fb, and the shift impulse Fc are determined.
Write them to RAM72. Then, RAM of synchronous impulse Fa, sweeping impulse Fb, and shifting impulse Fc
After the writing to 72 is completed, the input data signal Dx instructing data output is supplied from the data input section 41 to the controller 70, and the output data is sent from the controller 70 to the calculation output data memory 74, printer 75, and display device 76. signal
Oa is sent. Thereby, data representing the synchronous impulse Fa, the sweeping impulse Fb, and the variable speed impulse Fc are printed out from the printer 75, displayed on the display device 76, and stored in the calculation output data memory 74.

The creation of data for evaluating the weight of the shift operation performed as described above is mainly performed by the controller 70 in the data processing unit 60, but the program executed by the controller 70 in creating such data is An example of
This will be explained with reference to the flowchart shown in FIG.

In the program shown in the flowchart of FIG. 6, initial settings are performed in process 151 after the program is started. With this initial setting, the acquisition conditions for various signals are adjusted. Next, in decision 152, it is determined whether or not the input data signal Dx instructing the start of data creation has arrived, and if it is determined that the input data signal Dx instructing the start of data creation has not arrived, This determination is repeated, and if it is determined that the input data signal Dx instructing the start of data creation has arrived, the process advances to decision 153.

Decision 153 subtracts the rotational speed Ni of the input shaft 12 represented by the digital signal Si' from the rotational speed Nm of the motor 11 represented by the digital signal Sm', and determines whether the resulting difference ΔNu is greater than or equal to a predetermined value α. to decide. If the decision 153 determines that the difference ΔNu has not reached the value α, the decision 153 is repeated until the difference ΔNu becomes equal to or greater than the value α, and the determination 153 is repeated until the difference ΔNu becomes equal to or greater than the value α. If so, it is determined at decision 154 whether the stroke K of the shift lever 2 is greater _than or equal to the stroke value K1. If it is determined in the decision 154 that the stroke K is not greater than or equal to the stroke value _K1 , the determination in the decision ₁₅₄ is repeated until the stroke K becomes greater than or equal to the stroke value _K1 ; If it is determined that the
Proceeding to process 155, the load L acting on the shift lever 2 represented by the digital signal Sw' is detected, and the impulse is determined from the detected load L and integrated.
Proceed to decision 156.

In the decision 156, the rotational speed N of the synchronized gear 52, which is calculated based on the rotational speed Ni of the input shaft 12 represented by the digital signal Si' and the gear ratio in the transmission 1, is the output represented by the digital signal So'. Rotational speed No. of shaft 14
If it is determined that the rotational speed N of the synchronized gear 52 is not less than or equal to the rotational speed No of the output shaft 14, the rotational speed N is the rotational speed
Processes 155 and 156 until no more than
is repeatedly executed, and the rotational speed N of the synchronized gear 52 is
If it is determined that the rotational speed of the output shaft 14 has become equal to or lower than No, the integrated impulse is stored in the RAM 72 as the synchronous impulse Fa in process 157, and the process proceeds to process 158.

In process 158, the digital signal
Load L acting on shift lever 2 represented by Sw′
is detected, the impulse is determined and integrated from the detected load L, and in the subsequent decision 160, the stroke K of the shift lever 2 is determined as the sum of the stroke values K ₁ , K ₂ and K ₃ based on the digital signal Ss'. If it is determined that the stroke K is less than the stroke value Ka, the process 158 and the decision 160 are repeated until the stroke K is equal to or greater than the stroke value Ka. Execute. Then, if it is determined that the stroke K is greater than or equal to the stroke value Ka, in process 161, the accumulated thrusting impulse Fb is written to the RAM 72,
Proceed to process 162. In process 162, the shift impulse Fc during the shift period Td is calculated by adding the synchronous impulse Fa and the sweeping impulse Fb, and in the subsequent process 163, the calculated shift impulse Fc is stored in the RAM 72. Then, proceed to process 164. In process 164, each time a gear shift operation of transmission 1 is performed, the synchronous impulse Fa, the sweeping impulse Fb, and the shift impulse Fc are determined as described above, and these are stored in the RAM.
72 and terminates the program.

In this way, the calculated synchronous operation period Ta,
Data representing the synchronous impulse Fa, the raking impulse Fb, and the shifting impulse Fc during the raking operation period Tb and the shifting period Td are printed out by the printer 75 or displayed by the display device 76, but these data are For example, the weight of the shift operation is evaluated as follows.

First, the shift impulse calculated as described above
The specific value of Fc is expressed on an evaluation standard characteristic diagram as shown in Figure 7 A, B, and C, in which impulse F is plotted on the vertical axis and time H is plotted on the horizontal axis. It is evaluated whether the weight of the shift operation is within an allowable range or not, depending on which region the measured point is located.

Here, regarding the evaluation criteria, when a synchronous action is performed, the impulse F is approximately constant, whereas when a raking action is performed, the load required for the raking action is approximately constant. , the impulse F increases in proportion to time H. Therefore, when a shift operation is performed to change the gear position for a certain transmission 1, if the specific value of the shift impulse Fc during the shift period Td is _F3 , this specific value _F3 is Synchronous impulse during the operating period Ta
It is the sum of the specific value F ₁ of Fa and the specific value F ₂ of the scraping impulse Fb during the scraping motion period Tb. and,
When the transmission 1 is shifted multiple times, the required time during the shift period Td is Hx, Hx′, Hx″, etc., and the specific values of the shift impulse Fc are F ₃ , F ₃ ′ , F ₃ ″..., then the measurement point Q representing the specific values F ₃ , F ₃ ′, F ₃ ″...
Q', Q''..., as shown in FIG. 7A, draw a line X indicating the area where the impulse proportional area X'' is added to the constant impulse area X'.

Therefore, if we use the above-mentioned line By comparing the measurement point determined by line X with line X, the weight of the shift operation of transmission 1 can be evaluated. In other words, if the cause of the heavy shift operation is transmission 1 in the synchronous operation period Ta, the specific value of the synchronous impulse Fa in the constant impulse region Therefore, the measurement points Q, Q', Q''... are distributed as shown in Fig. 7B, and in the case of transmission 1 where the cause of the heavy shift operation is the shift operation period Tb, , proportional area
The sweeping impulse Fb at X'' becomes large, and the measurement points Q, Q', Q'', . . . are distributed with respect to the reference line X as shown in FIG. 7C.

In this way, the synchronous operation period Ta from the start of the synchronous operation of the synchronous sleeve 47 and the synchronous ring 55 to the time when the synchronous operation is completed, and the scraping operation period from the time when the synchronous operation is completed to the time when the plowing operation is completed.
The weight of the shift operation is quantitatively evaluated by calculating the impulse acting on the shift lever 2 during the shift period Td, which is the sum of Tb, and comparing the calculated impulse with a predetermined reference characteristic. will be done.
In that case, for the same transmission 1, a constant characteristic can be obtained for the required time regardless of the operating speed of the shift lever 2 or the method of applying force, so it is useful to compare it with a predetermined reference characteristic. This will result in uniform evaluations without variations. In addition, the calculated impulse takes into account both the load and time factors, so it corresponds well to the feeling of weight felt by the operator during shift operation, and provides an evaluation that matches the actual operation feeling. You will get it.

As mentioned above, the shift impulse during the shift period Td
Evaluation based only on Fc does not reveal whether there is a cause of heavy shift operation in either the synchronizing operation period Ta or the scraping operation period Tb. Therefore, in this example, the shift impulse
In addition to the evaluation based on Fc, the specific value of the synchronous impulse Fa during the synchronous movement period Ta is calculated, for example, as shown in Fig. 8, where the vertical axis is the impulse F and the horizontal axis is the time H. is expressed on the evaluation standard characteristic diagram, and the shift operation during the synchronous operation period Ta depends on whether the specific value of the synchronous impulse Fa exists between the reference lines f ₁ and f ₂ on the evaluation standard characteristic diagram. By evaluating the weight and combining the above-mentioned evaluation based on the shift impulse Fc during the shift period Td and the evaluation based on the synchronous impulse Fa during the synchronous operation period Ta, a comprehensive evaluation of the shift operation in the transmission 1 is performed. be made into

By doing this, the weight of the shift operation will be evaluated precisely, improving the evaluation accuracy, and the cause of the heavy shift operation will be determined from among the components of the test device 10. It becomes easier to clarify which position the shift is in, and useful data can be obtained when developing and producing a transmission 1 that provides good shift feeling.

In the above example, the weight of the shift operation is evaluated based on the shift impulse Fc during the shift period Td and the synchronous impulse Fa during the synchronous operation period Ta, but the shift according to the present invention The feeling evaluation method is not limited to this, for example,
Evaluation based on synchronous impulse Fa during synchronous action period Ta and scraping impulse during scraping action period Tb
Form where evaluation based on Fb is performed individually, and gear shift period
In addition to the evaluation based only on the shift impulse Fc at Td, the evaluation based only on the synchronous impulse Fa during the synchronous operation period Ta, and the evaluation based only on the shift impulse Fc during the shift period Td, The evaluation may be carried out by adding individual evaluations based on the synchronous impulse Fa in the movement period Ta and the scraping impulse Fb in the scraping movement period Tb, and when such a form is taken, the shift operation Evaluation is performed more easily or from multiple angles than in the above example.

In addition, in the above example, when the synchronous operation is completed,
t ₃ is the rotational speed N of the synchronized gear 52 and the output shaft 14
However, the method according to the present invention is not limited to adopting such a method, and the synchronous operation completion time t 2 can be determined by detecting the point in time when the synchronous operation completion time t ₂ coincides with the rotation speed No. Detection signal St
It may be determined by detecting the point in time at which the output torque R, which is represented by , reaches a maximum value during the shift period Td.

(Effects of the Invention) As is clear from the above description, according to the shift feeling evaluation method according to the present invention, the weight of a shift operation can be quantitatively and uniformly evaluated in a manner that is compatible with the actual shift feeling. It can be evaluated using Thereby, the shift feeling evaluation method according to the present invention contributes to ensuring uniformity of quality at the production stage of manual transmissions included in synchronized meshing mechanisms, and to realizing appropriate designs at the development stage. It turns out. Furthermore, the shift feeling evaluation method according to the present invention makes it possible to quantitatively grasp the contribution rate of each component of the manual transmission to the weight of the shift operation. By using basic data, it is relatively easy to set specifications that provide the desired shift feeling, and the number of development steps can be significantly reduced.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram showing a test device used to implement an example of the shift feeling evaluation method according to the present invention, and FIG. 2 is a diagram showing a test device used in the test device shown in FIG. 1 to evaluate shift feeling. 3A to 3F are views used to explain the operation of the manual transmission shown in FIG. FIGS. 5 and 6 are time charts used to explain the operation of the manual transmission shown in FIG. Figures A to C and Figure 8 are diagrams used to explain the evaluation of the weight of a shift operation using data obtained from the data processing unit shown in Figure 1. In the figure, 11 is a motor, 12 is an input shaft, 13 is a clutch, 14 is an output shaft, 15 is a flywheel,
17 is an actuator, 21 is a motor rotation speed sensor, 22 is an input shaft rotation speed sensor, 23 is an output shaft rotation speed sensor, 26 is a load sensor, 27 is a stroke sensor, 28 is a torque sensor, 41 and 42 are data input units, 60 is a data processing unit, 70
is a controller, 74 is a calculation output data memory,
75 is a printer, 76 is a display device, 80 is a drive control unit, and 90 is a controller.

Claims (1)

[Scope of Claims] 1. In order to bring any one of a plurality of gear trains provided in a manual transmission into a power transmission state via a synchronous meshing mechanism including a synchronous sleeve and a synchronous ring, The shift lever provided in the manual transmission is operated to shift, and from the point in time when the spline tooth chamfer formed on the synchronizing sleeve starts to engage with the spline tooth chamfer formed on the synchronizing ring, the synchronizing sleeve is shifted. The load acting on the shift lever during the period up to the completion of the sweeping operation of the formed spline teeth against the spline teeth formed on the synchronization ring is measured, and the data obtained by measuring the load is used to A shift feeling evaluation method characterized by calculating an impulse in a period and evaluating the weight of a shift operation on the shift lever based on the calculated impulse. 2. In order to put any one of the plurality of gear trains provided in the manual transmission into a power transmission state via a synchronous meshing mechanism that includes a synchronous sleeve and a synchronous ring, When the provided shift lever is operated to shift, the chamfers of spline teeth formed on the synchronizing sleeve begin to engage with the chamfers of spline teeth formed on the synchronizing ring, starting from the start of the synchronizing operation. The load acting on the shift lever during the period up to the completion of the scraping operation on the spline teeth formed on the synchronization ring of the spline teeth is measured, and the data obtained by measuring the load is used to Impulse during the period from the start of the synchronous operation to the time when the synchronous operation is completed, when the rotational speed of the synchronous sleeve matches the rotational speed of the synchronized gear that is to be synchronized with the rotation of the synchronous sleeve, and from the time when the synchronous operation is completed. A shift feeling evaluation method characterized in that the impulse during the period up to the completion of the shifting operation is individually calculated, and the weight of the shift operation on the shift lever is evaluated based on each of the calculated impulses. 3. In order to put one of the plurality of gear trains provided in the manual transmission into a power transmission state via a synchronous meshing mechanism including a synchronous sleeve and a synchronous ring, The rotational speed of the synchronizing sleeve and the synchronizing sleeve change from the point in time when the provided shift lever is operated and the spline tooth chamfer formed on the synchronizing sleeve starts to engage with the spline tooth chamfer formed on the synchronizing ring. Measure the load acting on the shift lever until the rotation speed of the gear to be synchronized matches the rotation speed of the gear to be synchronized with the rotation of the shift lever, and calculate the impulse during the period using the data obtained by measuring the load. A shift feeling evaluation method characterized in that the weight of a shift operation on the shift lever is evaluated based on the calculated impulse. 4. In order to put any one of the plurality of gear trains provided in the manual transmission into a power transmission state via a synchronous meshing mechanism including a synchronous sleeve and a synchronous ring, When the provided shift lever is operated to shift, the chamfers of spline teeth formed on the synchronizing sleeve begin to engage with the chamfers of spline teeth formed on the synchronizing ring, starting from the start of the synchronizing operation. The load acting on the shift lever during the period up to the completion of the scraping operation on the spline teeth formed on the synchronization ring of the spline teeth is measured, and the data obtained by measuring the load is used to Calculate the impulse for each period and the period from the start of the synchronous operation to the time when the synchronous operation is completed when the rotational speed of the synchronous sleeve and the rotational speed of the gear to be synchronized to be synchronized with the rotation of the synchronous sleeve match. , a shift feeling evaluation method characterized by evaluating the weight of a shift operation on the shift lever based on each of the calculated impulses. 5 The manual transmission is configured to transmit power to one of the plurality of gear trains provided in the manual transmission through a synchronized meshing mechanism including a synchronizing sleeve and a synchronizing ring. When the provided shift lever is operated to shift, the chamfers of spline teeth formed on the synchronizing sleeve begin to engage with the chamfers of spline teeth formed on the synchronizing ring, starting from the start of the synchronizing operation. The load acting on the shift lever during the period up to the completion of the scraping operation on the spline teeth formed on the synchronization ring of the spline teeth is measured, and the data obtained by measuring the load is used to period, from the start of the synchronous operation to the time when the synchronous operation is completed, at which the rotational speed of the synchronous sleeve matches the rotational speed of the gear to be synchronized to be synchronized with the rotation of the synchronous sleeve, and the time when the synchronous operation is completed. A shift feeling evaluation method characterized by calculating impulses in each period from the time to the completion of the raking operation, and evaluating the weight of the shift operation on the shift lever based on each of the calculated impulses.