JP3456680B2 - Gear position detection device for transmission - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shift lever which has four positions for selection, seven forward gears and one reverse gear, slides on an inner shaft, and rotates integrally with the inner shaft. And a gear position detecting device for a transmission having the following.

[0002]

2. Description of the Related Art A mechanical electronically controlled transmission that uses a gear type transmission and a mechanical clutch to shift the transmission by a computer is known. To recognize the gear position, the shift and select cylinders are provided with switches for detecting the shift position and the select position, respectively.

[0003]

However, in the above technique, each cylinder is provided with a switch, so that there is a problem that the electric circuit is complicated, long and complicated, and causes a failure. In addition, actual public Sho 63-36426
Although the technology of the publication is disclosed, a 6-speed transmission having 4 rows of shifts and 3 rows of shifts also requires the same seven Hall elements as the 7-speed transmission. In addition, the actual development Sho 59-16659
Although the technology of the publication is disclosed, since all the sensors for shift select detection are provided on the circumference of the end of the shift select shaft, the shaft diameter becomes large, the space becomes large, and the cost becomes large. There is also the problem of bulking.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a gear position detecting device for a transmission that can easily and rationally detect the gear position of a forward 7-speed reverse 1-speed transmission.

[0005]

According to the invention, the select has four positions, one reverse gear and seven forward gears,
In a gear position detection device for a transmission having a shift lever that slides on the inner shaft and rotates integrally with the inner shaft, a magnet holder that is integral with the shift lever is provided, and a magnet holder that faces the magnet holder is provided. Is provided with a gear position detector having a Hall element that operates in accordance with the first and second strip magnets and the first and second strip magnets provided in parallel for detecting the axial position of the inner shaft. A third strip magnet extending in a direction perpendicular to the first and second magnets is provided in the circumferential direction of the strip magnet, and the gear position detector corresponds to the second strip magnet at the select end position. 3 Hall element and the select end on the opposite side of the second Hall element corresponding to the second strip magnet at the intermediate select position A second hall magnet and a corresponding first hall element are provided, and the third hall magnet corresponds when the third hall magnet is in the neutral position and the third hall magnet corresponds when the third belt magnet is vertically shifted. And two Hall elements that operate. In addition, instead of the Hall element, the Hall I including an integrated circuit including the Hall element
It may be C.

Further, according to the present invention, the neutral and upper and lower Hall elements are provided between the first Hall element and the second Hall element.

Further, according to the present invention, the upper Hall element is within the moving range of the first and second strip magnets.

According to the present invention, the end of the third strip magnet is located between the first and second strip magnets.

Further, according to the present invention, the shift lever has four positions, one reverse gear step and seven forward gear steps, and slides on the inner shaft to rotate integrally with the inner shaft. In a gear position detection device for a transmission having
A magnet holder integrated with the shift lever is provided, and a gear position detector having a Hall element that operates in opposition to the magnet provided in the magnet holder is provided. The magnet holder detects the axial position of the inner shaft. For this purpose, the first and second strip magnets provided in parallel and the third strip magnet extending in the direction perpendicular to the first and second magnets in the circumferential direction of the first and second strip magnets are provided. , The gear position detector has a third Hall element corresponding to the second strip magnet at the select end position and a select on the side opposite to the second Hall element corresponding to the second strip magnet at the intermediate select position. It is provided with the first strip-shaped magnet and the corresponding first hall element at the end, and corresponds to the case where the third strip-shaped magnet is in the neutral position. Stand Hall element and the third strip magnet and a corresponding two Hall elements when shifting up or down.

Further, according to the present invention, the third magnet projects more than the first magnet.

[0011]

According to the gear position detecting device for a transmission of the present invention, in the case of a transmission having seven forward gears and one reverse gear, the position of the select row is parallel to the magnet holder provided integrally with the shift lever. The position of the shift train is detected by a gear position detector in which the first and second band magnets arranged and three Hall elements are linearly arranged, and the position of the shift train is provided at a right angle to the first and second band magnets. It is detected by the third strip magnet and the three Hall elements arranged at right angles to the Hall element array.

Therefore, the gear position of the transmission having seven forward gears and one reverse gear can be detected by the six Hall elements and the three magnets, and the gear position detector is arranged laterally of the inner shaft. Low in size and compact.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

1 and 2 are cross-sectional views of a remote control cover 1 to which a gear position detecting device of a transmission according to the present invention (the drawing shows an example of 7 forward gears and 1 reverse gear) are shown. It is attached to the upper part of a transmission housing, an inner shaft 4 is rotatably provided on the cover 1, a spline 4a is provided at one end thereof, and a lever for rotating the inner shaft 4 at the other end. 1
5 is attached.

A shift lever 3 is slidably attached to the spline 4a, and when a change lever (not shown) is operated in the shift direction, the shift rod 1
6 and the rod end 17, the shift lever 3 is rotated to move the shift lever end 3a in the shift direction Y (see FIG.
In the left-right direction).

A magnet holder 5 is attached to the shift lever 3, and an outer circumference of the magnet holder 5 is formed in a circular shape centered on the center of the inner shaft 4, and a position corresponding to the outer circumference is formed. A gear position detector 2 having a concentric circumferential surface is provided.

Further, the cover 1 has a select shaft 1
0 is rotatably provided, and the select shaft 10 is configured to move the shift lever 3 in the shift direction W (left and right direction in FIG. 2) via the select lever 11. Here, reference numeral 12 indicates an oil seal, and reference numeral 13 indicates a seal cover.

FIG. 3 shows an X arrow view of the gear position detector 2, and FIG. 4 shows a magnet holder 5 provided on the shift lever 3 so as to face the gear position detector 2. The magnet holder 5 is provided with a first strip magnet 21 and a second strip magnet 22 that are arranged in parallel to detect the axial position (select position) of the inner shaft 4.

Further, in the circumferential direction of the first and second strip magnets 21 and 22 (vertical direction in FIG. 4), the third strip magnets extending in the direction perpendicular to the first and second strip magnets.
The strip-shaped magnet 23 is provided below the first and second strip-shaped magnets 21 and 22.

Further, the upper part of the gear position detector 5 is shown in FIG.
The third hall element PTS3 corresponding to the second strip magnet 22 at the select end position N4 on the left side of the
And the second strip magnet 2 at the intermediate select position N3.
The second Hall element PTS2 corresponding to No. 2 and the first Hall element PTS1 corresponding to the second strip magnet 22 are attached at the opposite select end N1 shown on the right side of FIG. Here, the second Hall element PTS2 and the first Hall element PTS1 have an interval twice as large as the interval between PTS3 and PTS2, and a select position N2 having no Hall element is provided in the middle thereof.

A neutral hall element PTN corresponding to the third band magnet 23 for detecting the shift position in the neutral position, and a front hall element PTF corresponding to the third band magnet shifting upward in the figure. , And a rear Hall element PTR corresponding to the downward shift.

The hall elements PTN, PTF, PT
R is provided in the up-down direction between the first Hall element PTS1 and the second Hall element PTS2 of the gear position detector 5, and the first Hall element PTS1 is the second band-shaped magnet 2
It is configured to be located between the first and second strip magnets 21 and 22 at a position corresponding to 2.

Further, the third Hall element PTS3 and the second Hall element PTS3
The distance from the Hall element PTS2 is the first strip-shaped magneto 2
It becomes equal to the distance between the first and second strip magnets 22,
One end of the third strip magnet is arranged between the first and second strip magnets 21 and 22.

The operation will be described below. FIG. 5 shows a shift pattern, and shows the position of the shift lever end 3a of the shift lever 3. The vertical direction in the figure indicates the shift direction, the horizontal direction in the figure indicates the select direction, N1 to N4 indicate the select rows, and R indicates the retracted position.

FIG. 6 shows that the second strip magnet 22 is on the third Hall element PTS3 and that the select column N4 is selected, in which the diagram on the left side of FIG.
The band-shaped magnet 23 is located on the Hall element PTN, which indicates that the shift direction is neutral. Further, the central diagram of FIG. 6 shows that the third strip magnet 23 is on the Hall element PTF and the shift direction is the sixth speed, and the right diagram is that the third strip magnet 23 is on the Hall element PTR. Yes, it indicates that the shift direction is the 7th speed.

In FIG. 7, the first strip magnet 21 is the third
The second strip magnet 22 on the Hall element PTS3 of
Is on the second Hall element PTS2, and the select direction indicates that N3 is selected. The shift direction is shown on the left side of FIG. 7 in which the third strip magnet 23 is the Hall element PT.
It is on N, indicating that the shift direction is neutral. Further, the central figure of FIG. 7 shows that the third strip magnet 23 is on the hall element PTF and the shift direction is the fifth speed, and the right figure shows the third strip magnet 2
3 is on the Hall element PTR, which indicates that the shift direction is the fourth speed.

Hereinafter, in FIG. 8, the first strip magnet 21 is on the second Hall element PTS2, and the select row is N2.
For the shift stage, the third gear, 2
FIG. 9 shows that the second band magnet 22 is on the first Hall element PTS1 and the select train is N1, and that the shift stage is the first speed. Reverse R is shown.

By summarizing the above, as shown in FIG. 10, since the gear position of the shift stage in each select train is detected by the hall element, the transmission can be controlled based on this signal. Further, by arranging the strip magnets in parallel in the select column N2, detection can be performed without providing a hall element, so the number of hall elements can be reduced.

FIG. 11 shows a second embodiment of the present invention, in which the third band magnet 23a is arranged in the magnet holder 5a so that one end thereof projects from the first band magnet 21, and the hole of the gear position detector 2 is arranged. The arrangement of the elements is the first and the second
Of the Hall elements PTS1 and PTS2 of the second and third
1 is the same as that of the first embodiment except that the distance between the Hall elements PTS2 and PTS3 of FIG.
2 to 15 and 16, as shown in FIG.
Is the same except that two Hall elements PTS2 and PTS1 are used.

Although the overall width can be narrowed by this, when the open failure occurs in the hall element, the number of select rows for detecting a combination of two hall elements is increased by one row, which may lower the detection accuracy.

[0031]

The present invention is configured as described above,
The following excellent effects can be achieved. (1) A gear position detection device for a transmission having seven forward gears and one reverse gear can be configured with six Hall elements and three magnets. (2) Only one shift detection magnet is required, and the height of the transmission can be reduced. (3) Since the Hall element in the shift position is displaced from the Hall element in the select position, there is no malfunction in the shift position detection. (4) Therefore, it is possible to provide a gear position detection device for a transmission that is accurate and inexpensive.

[Brief description of drawings]

FIG. 1 is a side sectional view of a remote control cover showing an embodiment of the present invention.

FIG. 2 is a front view of FIG.

3 is a view of the gear position detector of FIG. 1 as seen in the direction of arrow X. FIG.

FIG. 4 is a view of the magnet holder of FIG. 1 as seen in the direction of arrow X.

FIG. 5 is a diagram showing a shift pattern.

FIG. 6 is a diagram for explaining the operation of the neutral and the sixth speed and the seventh speed in the select train N4.

FIG. 7 is a diagram for explaining the action of the neutral and fifth speed and fourth speed in the select train N3.

FIG. 8 is a diagram for explaining the action of the neutral and third speed and second speed in the select train N2.

FIG. 9 is a diagram for explaining the action of the neutral, first speed, and R in the select train N1.

FIG. 10 is a diagram collectively showing operating states of Hall elements at each gear position.

FIG. 11 is a diagram showing a magnet holder according to a second embodiment of the present invention.

FIG. 12 is a diagram for explaining the operation of the neutral and the sixth speed and the seventh speed in N4 of the second embodiment.

FIG. 13 is a diagram for explaining the operation of the neutral and the fifth speed and the fourth speed in N3 of the second embodiment.

FIG. 14 is a diagram for explaining the operation of N2 in the second embodiment in the neutral, and the third speed and the second speed.

FIG. 15 is a diagram for explaining the operation of the neutral position, the first speed, and the R in N1 according to the second embodiment.

FIG. 16 is a diagram collectively showing operating states of Hall elements at respective gear positions according to the second embodiment.

[Explanation of symbols]

1 ... Cover 2 ... Gear position detector 3 ... shift lever 4 Inner shaft 5: Magnet holder 10 ... Select axis 11 ... Select lever 21 ... First strip magnet 22 ... Second strip magnet 23 ... Third strip magnet PTS1 ... First Hall element PTS2 ... Second Hall element PTS3 ... Third Hall element PTN ... Neutral Hall element PTF: front hall element PTR: Rear Hall element

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-6-293225 (JP, A) JP-A-62-13845 (JP, A) JP-A-59-48602 (JP, A) Sankaihei 5- 90027 (JP, U) S. 63-36426 (JP, Y1) (58) Fields surveyed (Int.Cl. ⁷ , DB name) F16H 59/70 F16H 63/20 G01B 7/00

Claims (6)

(57) [Claims] 1. A gear of a transmission having four shift positions, seven forward gear stages and one reverse gear stage, and a shift lever that slides on the inner shaft and rotates integrally with the inner shaft. In the position detection device, a magnet holder integrated with the shift lever is provided, and a gear position detector having a Hall element that operates in opposition to the magnet provided in the magnet holder is provided, and the magnet holder is provided with an axial direction of the inner shaft. The first and second strip-shaped magnets provided in parallel to detect the position of the first and second strip-shaped magnets, and a third strip extending in the direction perpendicular to the first and second strip-shaped magnets in the circumferential direction. A band magnet is provided, and the gear position detector has a third Hall element corresponding to the second band magnet at the select end position and an intermediate select position. A second hall element corresponding to the second belt magnet, and a first hall element corresponding to the second belt magnet at the select end portion on the opposite side.
Gear position of a transmission including a neutral hall element corresponding to the third belt magnet in the neutral position and two hall elements corresponding to the third belt magnet when the third belt magnet is vertically shifted. Detection device. 2. The gear position detecting device for a transmission according to claim 1, wherein the neutral and upper and lower hall elements are provided between the first hall element and the second hall element. 3. The gear position detecting device for a transmission according to claim 1, wherein the upper hall element is within the moving range of the first and second strip magnets. 4. The gear position detecting device for a transmission according to claim 1, wherein an end portion of the third strip magnet is located between the first and second strip magnets. 5. A gear of a transmission having four positions, a forward gear, a forward gear, a reverse gear, and a shift lever that slides on the inner shaft and rotates integrally with the inner shaft. In the position detection device, a magnet holder integrated with the shift lever is provided, and a gear position detector having a Hall element that operates in opposition to the magnet provided in the magnet holder is provided, and the magnet holder is provided with an axial direction of the inner shaft. The first and second strip-shaped magnets provided in parallel to detect the position of the first and second strip-shaped magnets, and a third strip extending in the direction perpendicular to the first and second strip-shaped magnets in the circumferential direction. A band magnet is provided, and the gear position detector has a third Hall element corresponding to the second band magnet at the select end position and an intermediate select position. A second hall element corresponding to the second belt magnet, and a first hall element corresponding to the first belt magnet at the select end opposite to the second hall element,
Gear position of a transmission including a neutral hall element corresponding to the third belt magnet in the neutral position and two hall elements corresponding to the third belt magnet when the third belt magnet is vertically shifted. Detection device. 6. The gear position detecting device for a transmission according to claim 5, wherein the third magnet projects more than the first magnet.