JPH06293225A - Gear position detecting device - Google Patents

Abstract

PURPOSE:To cope with the difference in specifications and the like of a transmission without changing a case side. CONSTITUTION:In a transmission in which gears are selected by the combination of the movement in the axial direction with the movement in the rotation direction of a shift-select lever, magnets 61 to 63 arranged in three rows in the circumferential direction and magnets 64 to 66 arranged in three rows in the axial direction are provided so that they are faced toward the shift-select lever and the outer surface of a rotor 29 to be detected connected through a connecting member. Hall elements 30a to 30c and 31a to 31c arranged in a tubular case 43, in which the rotor 29 to be detected is accepted, in one row, respectively, along its circumferential and axial directions are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gear position detecting device, and more particularly, to a gear position detecting device for a transmission in which a gear is selected by a combination of an axial movement and a rotational movement of a shift select lever. First and second magnets arranged in three rows in the circumferential direction and the axial direction of the rotor to be detected, and along the circumferential direction and the axial direction of a cylindrical case that receives the rotor to be detected, respectively. The present invention relates to a gear position detecting device that includes a plurality of sensors arranged in one row and detects a gear position.

[0002]

2. Description of the Related Art An automobile is provided with a transmission, and the transmission is used to change the number of revolutions of an engine and to transmit it to driving wheels. When selecting the gear of the transmission, the change lever provided in the driver's seat is operated, so that the shift select lever of the operation unit provided at the upper part of the transmission causes the shift direction or the select direction. The gear is moved via the fork so that the desired gear is meshed.

When the change lever operated by the driver is located above the transmission, the shift select lever of the transmission is directly moved by the change lever to select the gear. However, like the rear engine bus, when the distance between the change lever operated by the driver and the transmission arranged at the rear of the vehicle is large,
The movement of the change lever needs to be transmitted to the transmission via a link rod that is approximately the same as the entire length of the vehicle. Therefore, a large operating force is required, which impairs operability and increases driver fatigue.

Therefore, a mechanical automatic transmission has been proposed. In a mechanical automatic transmission, a shift select lever provided on its operating portion is moved in a shift direction and a select direction by a shift cylinder and a select cylinder, respectively, thereby selecting gears. is there. In this case, when the change lever provided in the driver's seat is operated, the sensor inside the change lever detects this, and a signal is sent to the control unit. This control unit opens and closes the solenoid valve. However, the shift cylinder and the select cylinder are operated respectively.

In such a mechanical automatic transmission, since there is no mechanical connection between the operation of the change lever provided in the driver's seat and the transmission, the change lever switching position and the transmission are selected. Gears do not always correspond correctly. Therefore, it is necessary to accurately detect the gear position of the transmission and to inform the driver of the detected gear position correctly. The applicant proposed the gear position detecting device described below (Japanese Utility Model Laid-Open No. 3-81454). ).

FIG. 5 shows a transmission control device to which a gear position detecting device according to a conventional embodiment is applied, and a change lever is provided on a side portion of a driver's seat of a vehicle on which the transmission is mounted. 10 are provided. The change lever 10 is provided with a knob 11. The knob 11 is associated with an actuator 12 that applies a reaction force. A clutch pedal 13 is arranged on the floor of the driver's seat, and the depression of the pedal 13 is detected by the clutch sensor 14. The detection outputs of the change lever 10 and the clutch sensor 14 are the control unit 1
The control unit 15 controls the operation of the actuator 12. A computer 15-1 is mounted on the control unit 15, and the computer 15-1 substantially controls each part.

On the other hand, a shift select lever 19 is provided in the operating portion of the automatic transmission 18 attached to the engine of this vehicle, and the gears are selected by the shift select lever 19. Moreover, the shift select lever 19 is connected to the piston rod of the select cylinder 21 by the rod 20. Furthermore, the rod 2 of the shift select lever 19
Zero is rotated by the shift cylinder 22. The select cylinder 21 is a pair of solenoid valves 2
The operation is controlled by 3, 24. Similarly, the shift cylinder 22 includes a pair of solenoid valves 25, 2
The operation is controlled by 6.

The rod 20 to which the shift select lever 19 is attached is further provided with a rotor 29 for detection. The movement of the detected rotor 29 in the axial direction or the select direction is detected by the sensor 30. Similarly, the movement of the detected rotor 29 in the rotation direction or the shift direction is detected by the sensor 31. These sensors 30, 3
Both are connected to the control unit 15 of the automatic transmission 18. Further, the control unit 15 is provided with a display device 32, and the gear position selected by the display device 32 is displayed.

Next, a mechanism for detecting the gear position by the detected rotor 29 will be described. As shown in FIGS. 8 to 10, the detected rotor 29 is formed of an aluminum alloy cylinder, and a lateral groove 35 is formed in a part of its outer peripheral portion. An arcuate magnet 36 is inserted and fixed in the lateral groove 35.
Further, the protrusion 3 is formed on a part of the outer peripheral portion of the rotor 29 for detection.
7 is formed so as to extend in the axial direction, and a vertical groove 38 is formed in this ridge 37. A magnet 39 is fixed to the vertical groove 38. A key groove 40 is formed on the inner peripheral surface of the through hole of the detected rotor 29.

On the other hand, the case 43 which receives the rotor 29 to be detected is made of a synthetic resin molded body and has a structure as shown in FIGS. Three recesses 44 are formed on the lower surface of the case 43 along the axial direction. Then, in these recesses 44, three Hall elements 30a, 30b, 3 forming the sensor 30 in the select direction are formed.
0c is stored and held respectively. Further, three concave portions 45 are formed on the upper surface of the case 43 along the circumferential direction, and the Hall elements 31a, 31b, 31c constituting the shift direction sensor 31 are held in the concave portions 45, respectively. There is. Further, a groove 46 extending in the axial direction is formed so as to face the peripheral surface of the space inside the case 43, and the groove 46 receives the protrusion 37 of the rotor 29 for detection. Also this case 4
As shown in FIG. 4, a flexible printed circuit board 47 is attached to the outer peripheral side of 3 so as to be wound.
The flexible printed board 47 has a power supply line 52 on the outer surface thereof and a ground line 53 on the inner surface thereof, and further has a signal line appropriately formed on the front surface or the back surface thereof.
And 0c and 31a to 31c.
Further, a lead wire holding portion 48 is provided so as to project from a side portion of the case 43. A synthetic resin cover 49 is further attached to the outer peripheral side of the case 43.

Next, the operation of the control system of the automatic transmission shown in FIG. 5 will be described. When changing the gear position of the automatic transmission 18, the driver depresses the clutch pedal 13. When the amount of depression of the pedal 13 reaches the disengaged position of the clutch body, this is detected by the clutch sensor 14 and a signal is supplied to the control unit 15. Then, when the driver manually operates the knob 11 of the change lever 10, the gear position selected by the knob 11 is changed to the control unit 15
The control unit 15 compares the current gear position of the automatic transmission 18 with the selected gear position, and actuates the select cylinder 21 and / or the shift cylinder 22 accordingly.

The operation of the select cylinder 21 is the solenoid valve 2
3 and 24 are opened and closed, and the operation of the shift cylinder 22 is performed by opening and closing control of solenoid valves 25 and 26.
When the select cylinder 21 is operated, the shift select lever 19 is moved along with the rod 20 in the axial direction. On the other hand, shift cylinder 2
When 2 is operated, the shift select lever 19 is rotated around the axis of the rod 20.
In this way, the gears of the automatic transmission 18 are switched.

The switched gear position is the rotor 2 for detection.
9 select position and shift position sensor 30, 31
It is judged by detecting. That is, when the shift select lever 19 is selected, the detected rotor 29 is also moved in the axial direction, and the movement is detected by the sensor 30 that detects the position in the select direction. Further, when the shift select lever 19 performs a shift operation, the sensor 31 detects this.

The detection signals of these sensors 30 and 31 are supplied to the control unit 15, whereby the control unit 15 recognizes that a predetermined gear has been selected. Then, after this, the solenoid valve of the actuator 12 that applies a reaction force to the knob 11 is turned off, and the driver is informed that the clutch may be connected by a display means (not shown).
The information on the gear position detected by the sensors 30 and 31 is displayed by the display device 32 on the instrument panel.

In particular, in detecting the gear position of the automatic transmission 18, the positions of the magnets 36 and 39 provided on the rotor 29 for detection shown in FIGS. 30c and 31a to 31c. When the detected rotor 29 shown in FIGS. 4, 6, and 7 is moved in the axial direction via the rod 20, the detected rotor 29 is moved in the case 43 in the axial direction. Therefore, the position of the magnet 36 provided on the lower surface of the detected rotor 29 changes, and this position is detected by one of the three Hall elements 30a to 30c as shown in FIG. Thus, position detection in the select direction is performed.

On the other hand, when the detected rotor 29 is rotated by the rod 20, the detected rotor 29 is rotated in the case 43, and is provided on the protrusion 37 of the detected rotor 29. The magnet 39 is rotated in the groove 46, and the position of the magnet 39 is detected by one of the three Hall elements 31a to 31c on the case 43 as shown in FIG. The detection operation will be performed. Control unit 15
Are Hall elements 30a to 30c and 31a to 3
Since they are respectively connected to 1c, the gear position of the transmission 18 can be detected from the combination of the axial position and the rotational position of the detected rotor 29.

That is, FIG. 14 is a detection explanatory view for explaining the gear position detection, in which the magnets 36 and 39 provided on the rotor 29 to be detected are arranged in the row A, respectively.
Hall element 3 provided in the case 43, which is called a row B
0a to 30c and 31a to 31c are respectively A _{1 to} A
₃ , B _{1 to} B ₃ .

FIG. 15 is an explanatory view of the gear position of the transmission, in which R, N ₁ and 1 rows in the shift direction,
2, N ₂ , 3 rows, 4, N ₃ , 5 rows are A ₁ ,
Called A ₂ , A ₃ columns, R, 2, 4 columns in the select direction, N ₁ , N ₂ , N ₃ columns, 1, 3, 5 columns are respectively B ₁ , B ₂ , B ₃ columns. I'll call it a column. In addition, the inside of the circle indicates the gear position, R is the reverse, 1 to 5 are the 1st to 5th speed, and N ₁
To N ₃ represents neutral, respectively.

When the detected rotor 29 moves in the case 43 in the select direction and / or the shift direction, A
Hall elements 30a to 30 for detecting the magnets 36 in a row
Name of any Hall element in c and magnet 3 in row B
From the name of any of the Hall elements in the Hall elements 31a to 31c that detect 9 there is a gear position at the intersection of the two corresponding columns in FIG. For example, Hall element 30b
A ₂ and B _{1 of the} Hall element 31a are magnets 36,
Assuming that each of 39 is detected, the intersection of the A ₂ row and the B ₁ row in FIG. 15, that is, the gear position of 2 is detected. Further, for example, assuming that A _{3 of the} hall element 30c and B _{2 of the} hall element 31b detect the magnets 36 and 39, respectively, the intersection of the row A _{3 and the} row B _{2 in} FIG. 15, that is, the gear position of N ₃ Is detected.

[0020]

In the conventional structure in which one magnet 36 on the select side and one magnet 39 on the shift side are provided on the detected rotor 29, the gears of the automatic transmission 18 are moved. When it is desired to change the position on the side, for example, columns A _{1 to} A ₃ or B in FIG.
Case 43, for example, when you want to change the span of rows _{1 to} B ₃
Hall elements 30a held in the concave portions 44 and 45 of
There is a drawback that it cannot be dealt with unless the mounting positions of the 30c and the Hall elements 31a to 31c are changed, and if the specifications of the transmission are different, the case 43 having the corresponding recesses 44 and 45 must be processed.

An object of the present invention is to solve the above-mentioned drawbacks, and to provide a gear position detecting device which can easily cope with a difference in specifications of a transmission and which is more reliable in detecting a gear position. It is an object.

[0022]

In order to achieve the above object, the gear position detecting device of the present invention selects a gear by a combination of an axial movement and a rotational movement of a shift select lever. In the transmission, the first magnets and their axes arranged in three rows in the circumferential direction so as to face the outer peripheral portion of the rotor to be detected connected to the shift select lever via the connecting member. A plurality of second magnets, which are arranged in three rows in a direction, and are arranged in one row along a circumferential direction and an axial direction of a cylindrical case that receives the rotor to be detected. It is characterized in that it is equipped with a sensor of and is adapted to detect the gear position.

The first magnets arranged in three rows in the circumferential direction are each composed of one magnet, and the second magnets are arranged in three rows in the axial direction. Each row of the magnet is composed of one magnet, and the gear position is detected by activating one sensor in the circumferential direction and one sensor in the axial direction.

The first magnets arranged in three rows in the circumferential direction are composed of two magnets in each row, and the second magnets are arranged in three rows in the axial direction. The magnets may include two magnets in each row, and the gear position may be detected by activating two sensors in the circumferential direction and two sensors in the axial direction.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a detection explanatory view of an embodiment for explaining the gear position of the present invention. In the figure, the rotor 29 for detection is provided with grooves in its circumferential direction, and three magnets 61, 62, 63 are arranged and fixed in three rows, and also in the axial direction thereof. Grooves are provided and three magnets 64, 65, 66 are arranged and fixed in three rows. These fixing methods may be fixed by any means.

Of the magnets 61, 62, 63 arranged in three rows in the circumferential direction of the rotor 29 for detection, the magnet 61 is the A ₁ row, the magnet 62 is the A ₂ row, and the magnet 63 is the A ₃ row. Of the magnets 64, 65, 66 arranged in three rows in the axial direction of the rotor 29 for detection, the magnet 64 is B ₁ row, the magnet 65 is B ₂ row, and the magnet 66 is B ₃ row. I will call it.

On the other hand, the case 43 that receives the rotor 29 to be detected is formed with three concave portions along the circumferential direction, and these concave portions have Hall elements 30a, 30b, and 30c, as shown in FIG. 30c are held respectively. Further, three concave portions are formed along the axial direction, and the hall elements 31a, 31b, 31c are respectively held in these concave portions as shown in the figure.

The hoses held in the circumferential direction of the case 43
Hall element 30 of the hall elements 30a, 30b, 30c
a to A₁, Hall element 30b to A₂, Hall element 30c
A ₃And is held in the axial direction of the case 43.
Hall element 3 of Hall elements 31a, 31b, 31c
1a to B₁, Hall element 31b to B₂, Hall element 31
c to B₃I will call it.

The Hall element 30a for A ₁ held in the case 43 detects the position of the magnet 61 in the A ₁ row of the rotor 29 to be detected which moves in the case 43 in the select direction. Hall element 30b for A ₂
Is adapted to detect the position of the magnet 62 of the A ₂ rows, Hall element 30c of A ₃ is adapted to detect the position of the magnet 63 of the A ₃ columns.

The Hall element 31a of B ₁ held in the case 43 detects the position of the magnet 64 of the B ₁ row of the rotor 29 for detection moving in the shift direction in the case 43. Similarly, Hall element 31 of B ₂
b is adapted to detect the position of the magnet 65 of _two rows B, the Hall element 31c of the B ₃ is adapted to detect the position of the magnet 66 of the _three columns B.

That is, the Hall element held in the case 43 forms a pair with the magnet having the same reference numeral of the rotor 29 for detection, and when the Hall element detects the corresponding magnet position, the detection signal is output and the Hall element for detection is detected. The gear position is detected from each moving position of the rotor 29 in the select direction and the shift direction.

[0032] For example, it is assumed that the Hall element 31a of the Hall element 30b and B ₁ of A ₂ detects each a magnet 64 of _one row and the magnet 62 of the A ₂ rows B, FIG referring to FIG. 15 The intersection of the row A _{2 and the} row B ₁ , that is, the gear position of 2, is detected. Also, for example,
Assuming that the Hall element 31b of the Hall element 30c and B ₂ of A ₃ are respectively detected and a magnet 65 of the _third column magnet 63 and B ₂ rows of A, A ₃ rows of 15 and B ₂
Intersection of the column, that is, as if the gear position of N ₃ is detected.

In this way, the automatic transmission 18
However, if the transmission specifications are different, the Hall elements 30a to 30c,
A magnet 61 provided on the detected rotor 29 without changing the case 43 in which 31a to 31c are held.
By changing the mounting positions of ~ 66, it is possible to easily deal with the change in the specifications of the transmission and to detect the gear position of the automatic transmission 18. That is, if the distances in the select direction of the automatic transmission 18 are different, the mounting positions of the magnets 61 to 63 provided on the rotor 29 for detection may be fixed at positions that match them. If the spans of the gear positions in the shift direction are different, the magnets 61 to
The attachment positions of 63 and 64-66 may be fixed to the corresponding positions.

That is, in order to cope with the sensing position due to the difference in the specifications of the transmission, the modification of the rotor 29 for detection whose size can be easily changed is cheaper in cost than the modification of the case 43. It is left to the change of the detection rotor 29 side, and since it is only necessary to replace the corresponding detection target rotor 29 for the finished product, the detection target rotor 29 side is changed.

FIG. 2 shows a detection explanatory view of another embodiment for explaining the gear position of the present invention. In the figure, the rotor 29 for detection is provided with rows a ₁ , a ₂ ,
Two grooves are formed in each a ₃ and two magnets 61, 62, 63, are provided in each row as shown in the figure.
67, 68, 69 are arranged and fixed in three rows, and _two rows are also formed in each row b ₁ , b ₂ , b ₃ in the axial direction of the row, as shown in FIG. Two magnets 64, 65, 66, 70, 71, 7 per row
2 are arranged and fixed in three rows.

On the other hand, the rotor 29 for detection is received.
The case 43 having the same configuration as that shown in FIG.
Is used. A held in case 43₁The hall
Elements 30a and A₂The Hall element 30b of the
A of the rotor for detection 29 that moves inside in the select direction₁
Two pairs of magnets arranged in a row
It is designed to detect the positions of 61 and 67.
A₂Hall elements 30b and A₃Hall element 30c of
A of the rotor 29 for detection₂Two sleeves arranged in a row
Detects the positions of the paired magnets 62 and 68, respectively
It becomes like this, A₃Hall elements 30c and A ₁of
The hall element 30a is a of the rotor 29 for detection.₃Arranged in rows
Two magnets 63 that are paired with each other,
The position of 69 is detected.

The Hall element 31a for B ₁ and the Hall element 31b for B ₂ held in the case 43 are
Two paired magnets 6 arranged in row b _{1 of the} detected rotor 29 that moves in the set direction.
It is designed to detect the positions of 4, 70, and similarly B
_{The second} hall element 31b and the B ₃ hall element 31c are adapted to detect the positions of the two paired magnets 65 and 71 arranged in the b ₂ row of the rotor 29 to be detected. The Hall element 31c for B ₃ and the Hall element 31a for B ₁ are two paired magnets 66, 72 arranged in the row b _{3 of the} rotor 29 for detection.
The position of is detected.

That is, two Hall elements out of the three Hall elements held in the case 43 in the circumferential direction or the axial direction are arranged in three rows a in the circumferential direction arranged on the rotor 29 to be detected.
_{1 to} a ₃ or 2 in each row of 3 rows b _{1 to} b _{3 in} the axial direction
The Hall element outputs a detection signal when the Hall element detects the corresponding magnet position. The gear position is detected more reliably than that of FIG. 1 based on the combination of the two detection signals in the circumferential direction or the axial direction.

For example, Hall elements 30a of A ₁ and A ₂ ,
If 30b and Hall elements 31a and 31c of B ₁ and B ₃ respectively output detection signals,
The Hall elements 30a and 30b of ₁ and A ₂ output the detection signals, respectively, in the circumferential direction a _{1 of the} rotor 29 to be detected.
A case of detecting the magnet 61, 67 arranged in columns and said B ₁ and B ₃ Hall elements 31a, 31
c outputs a detection signal, respectively, to the detected rotor 2
Magnets 72, 66 arranged in the axial direction b ₃ row of 9
Is a case of detecting.

FIG. 3 shows a gear position explanatory diagram of the transmission corresponding to FIG. 2, in which R, N ₁ and 1 in the shift direction are shown.
, 2, N ₂ , 3 columns, 4, N ₃ , 5 columns are referred to as a ₁ , a ₂ , a ₃ columns, respectively, and R, 2,
The rows of 4, the rows of N ₁ , N ₂ , N _{3 and} the rows of 1, 3, 5 are referred to as the rows of b ₁ , b ₂ , b ₃ , respectively. Reference numerals 1 to 5 and N _{1 to} N ₃ are the same as those in FIG.

With reference to FIG. 3, from the same figure, in the above example,
a₁Row and b₃The intersection with the row, that is, the gear position of 1 is detected
As is done. Also, for example, A₂And A₃Hall element
Child 30b, 30c and B₂And B₃Hall element 31b of
It is assumed that 31c and 31c respectively output detection signals.
For example, above A ₂And A₃Hall elements 30b and 30c of
The output signal is output by the circle of the rotor 29 for detection.
Circumferential direction a₂Detects magnets 62 and 68 arranged in rows
In the case of₂And B₃Hall element 3
It is detected that 1b and 31c output detection signals respectively.
Direction b of rotor for motor 29₂Magnets arranged in rows
This is a case of detecting 65 and 71. Therefore, referring to FIG.
From the figure₂Row and b ₂The intersection with the column, ie N₂No gi
It seems that the ya position is detected.

In this way, the gear position of the automatic transmission 18 can be detected also in the case of FIG.
The movement of the rotor 29 for detection is detected based on the detection signals of each two of the Hall elements 30a to 30c and 31a to 31c, which are held three in the circumferential direction and three in the axial direction. , Its reliability is improved.

Even when the specifications of the transmission are different, the Hall elements 30a to 30c and 31a to 31c.
By changing the mounting positions of the magnets 61 to 72 provided on the detected rotor 29 without changing the case 43 in which is held, the specification change of the transmission can be easily dealt with, and the gear position of the automatic transmission 18 can be detected. can do.

[0044]

As described above, according to the present invention, a plurality of magnets are arranged in the circumferential direction and the axial direction of the rotor to be detected and the mounting positions thereof are changed, so that the case side is not changed. It is possible to cope with differences in transmission specifications and the like.

In the third aspect, the reliability of gear position detection is improved.

[Brief description of drawings]

FIG. 1 is a detection explanatory diagram of an embodiment for explaining a gear position of the present invention.

FIG. 2 is a detection explanatory diagram of another embodiment for explaining the gear position of the present invention.

FIG. 3 is an explanatory diagram of gear positions of the transmission corresponding to FIG.

FIG. 4 is an exploded perspective view of a gear position detecting device to which the present invention is applied.

FIG. 5 is a block diagram of a transmission control device in which the gear position detection device is used.

FIG. 6 is a vertical sectional view of a conventional gear position detection device.

7 is a sectional view taken along line IV-IV in FIG.

FIG. 8 is a front view of a conventional rotor for detection.

FIG. 9 is a side view of the same.

FIG. 10 is a bottom view of the same.

FIG. 11 is a rear view of the tubular case.

FIG. 12 is a plan view of the same.

FIG. 13 is a bottom view of the same.

FIG. 14 is a detection explanatory view for explaining a conventional gear position.

FIG. 15 is an explanatory diagram of gear positions of the transmission.

[Explanation of symbols]

18 Automatic Transmission 19 Shift Select Lever 29 Detected Rotor 30a, 30b, 30c, 31a, 31b, 31c Hall Element 43 Case 61, 62, 63, 64, 65, 66, 67, 68, 6
9,70,71,72 magnet

Claims (3)

[Claims] 1. A transmission in which a gear is selected by a combination of an axial movement and a rotational movement of a shift select lever, wherein a rotor for detection is connected to the shift select lever via a connecting member. The first magnets arranged in three rows in the circumferential direction so as to face the outer peripheral portion and the second magnets arranged in three rows in the axial direction, and Position detecting device, characterized in that a cylindrical case for receiving the rotor for rotor is provided with a plurality of sensors arranged in one row along the circumferential direction and the axial direction, respectively, to detect the gear position. . 2. The first members arranged in three rows in the circumferential direction.
The magnets in each row are composed of one magnet, and the second magnets arranged in three rows in the axial direction are composed of one magnet in each row, and are arranged in the circumferential direction and the axial direction. The gear position detecting device according to claim 1, wherein the gear position is detected by activating each of the sensors. 3. A first member arranged in three rows in the circumferential direction.
Of the magnet, each row is composed of two magnets, and each of the second magnets arranged in three rows in the axial direction is composed of two magnets in each row. 2. The gear position detecting device according to claim 1, wherein the gear position is detected by a configuration in which two sensors are operated each.