JPH08320063A - Position detecting switch - Google Patents

Abstract

PURPOSE: To provide a position detecting switch completely separated from a manual shaft, and able to completely seal a position detecting part into a case, in a space in which the position detecting part of the position detecting switch is to be arranged. CONSTITUTION: Permanent magnets 12 in which N poles and S poles are alternately magnetized are arranged on a manual shaft 11. Magnetic detecting sensors 16 are so arranged as to face the permanent magnets 12. The magnetic detecting sensors 16 are arranged in a case 13 so as to be separated from the outside. That is, the case 13 in which an ECU(electronic control unit) is to be housed is arranged independent of the manual shaft 11, and the permanent magnets 12 and the magnetic detecting sensors 16 face to one another through a seal member 14 made of non-magnetic materials.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a position detecting switch for detecting the position of a shift lever mounted on a vehicle.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 13, a position detecting switch for detecting the position of a shift lever has a slider 2 provided with a movable contact 3 mounted on a manual shift 1 and a case 4 mounted on a case 4. Has a fixed contact 5. The position of the shift lever was detected by turning on and off the movable contact 3 and the fixed contact 5. In addition, 6 is an outer lever attached to the manual shaft 1, and 7 is a seal portion between the manual shaft 1 and the case 4.

In such a position detecting switch, taking into consideration the problem that the life of the contact is shortened by the friction between the movable contact 3 and the fixed contact 5 when it slides, JP-A-6-28099.
As described in No. 3, there is proposed a structure in which a light emitting diode and a photocoupler are used instead of the movable contact and the fixed contact, and the position of the shift lever is detected in a non-contact manner.

[0004]

However, in the above-mentioned conventional position detecting switch, a through hole is formed in the position detecting switch, and the operation of the shift lever is mechanically transmitted to the manual valve through the through hole. Since the manual shaft is inserted, the contact portion between the case of the position detection switch and the manual shaft is a sliding portion.

Further, since the element arranged in the position detecting switch may not work properly due to intrusion of water or the like from the outside, the inside of the position detecting switch in which the element is arranged is sealed from the outside. There must be. However, as described above, since the part where the case and the manual shaft are in contact is a sliding part, it is difficult to completely seal the part where the case and the manual shaft are in contact with each other.
With the structure of the conventional position detection switch, water or the like cannot be infiltrated into the position detection switch, and the position of the shift lever may not be accurately detected.

The present invention eliminates the above problems, and the space in which the position detecting portion of the position detecting switch is arranged is completely isolated from the manual shaft, and the position detecting portion can be completely sealed inside the case. An object of the present invention is to provide a position detection switch that can be used.

[0007]

In order to achieve the above object, the present invention has (1) a case, a rotating member that rotates with the operation of a shift lever, an output means, and an input means. In the position detection switch, the input means is set to a first state or a second state depending on whether or not the output from the output means is input, and the rotating member has a switching means. Position detection for detecting the shift lever position based on the first state and the second state of the input means by switching the first and second states of the input means by the rotation of the switching means caused by the rotation of the member. The position detecting unit is included in the case, and the rotating member is arranged separately from the space in which the position detecting unit is arranged.

(2) In the position detecting switch described in (1) above, the rotating member is a manual shaft that mechanically transmits the operation of the shift lever to a manual valve, and the switching means is arranged on the manual shaft. It is characterized by (3) In the position detection switch described in (1) above, the rotating member is an outer lever that mechanically transmits the operation of the shift lever to a manual shaft, and the switching means is arranged on the outer lever. .

[0009]

[Operation and effect of the invention]

(1) According to the invention of claim 1, the case (13, 2)
3, 36, 55), a rotating member (11, 21, 31, 51) that rotates with the operation of the shift lever, an output means (12, 33, 27a, 58a, 64a), and an input means (16). , 38, 44, 27b, 58b, 64a), the input means (16,
38, 44, 27b, 58b, 64a) are set to the first state and the second state depending on whether or not the output from the output means (12, 33, 27a, 58a, 64a) is input.
The rotating member (11, 21, 31, 51) has a switching means (12, 22, 33, 52a), and the rotating member (11, 21, 31, 51) rotates. By rotating the switching means (12, 22, 33, 52a), the input means (16, 38, 44, 27b, 58b,
64a) is switched between the first state and the second state, and the input means (16, 38, 44, 27b, 58b, 64a).
Of the shift lever position based on the first state and the second state of the rotary lever (11, 23, 36, 55) included in the case (13, 23, 36, 55). , 21, 31, 51) are arranged separately from the space in which the position detecting unit is arranged, it is possible to reliably prevent the position detecting unit from being adversely affected by the intrusion of water or the like.

(2) According to the invention described in the above (1), the rotating member (11, 21, 31, 51) mechanically transmits the operation of the shift lever to the manual valve (11, 21). , 31, 51), and since the switching means (12, 22, 33, 52a) is arranged on the manual shaft (11, 21, 31, 51), in addition to the effect of (1) above. Since the movable body used conventionally is unnecessary, the structure can be made extremely compact, the number of parts can be reduced, and the cost can be reduced.

(3) According to the invention described in the above (1), the rotating member (11, 21, 31, 51) operates the shift lever by operating the manual shaft (11, 21, 31, 5).
The outer levers (32, 52) mechanically transmitted to 1), and the switching means (12, 22, 33, 52a) are arranged on the outer levers (32, 52). In addition to the above effect, the conventionally used movable body becomes unnecessary, the number of parts can be reduced, and the cost can be reduced.

[0012]

Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a configuration diagram of a position detection switch showing a first embodiment of the present invention, and FIG. 2 is a timing chart of output signals from the position detection switch. As shown in FIG. 1, in this embodiment, a manual shaft 11 serving as a rotating member is provided with permanent magnets 12 having alternating N and S poles serving as switching means. A magnetism detection sensor (Hall I
C) 16 is provided. The magnetic detection sensor 16 is arranged in the case 13 so as to be isolated from the outside. That is, the case 13 in which the ECU (electronic control unit) is built
Is disposed separately from the manual shaft 11, and the permanent magnet 12 and the magnetic detection sensor 16 face each other via a seal member 14 made of a nonmagnetic material such as plastic resin. That is, the magnetic detection sensor 16 has the space 15 isolated from the outside.

The operation of this position detection switch will be described below. When the manual shaft 11 rotates, the permanent magnet 12 also rotates by a limited angle, and the position detecting means detects the position of the manual shaft 11.
For example, the magnetic detection sensor A, the magnetic detection sensor B, and the magnetic detection sensor C are arranged with a predetermined electrical angle shift, as shown in FIG. The output signals of the magnetic detection sensors A to C are ON at the rising edge and OFF at the falling edge.

At the position of the manual shaft 11, all the output signals of all the magnetic detection sensors A, B, C become "0", at this time, the position is "P", and at the position of the manual shaft 11, the magnetic detection sensor. The output signal of A is "1", the output signals of the magnetic detection sensors B and C are "0", the position is "R" at this time, and the magnetic detection sensors A and B are at the position of the manual shaft 11.
Output signal of "1", the output signal of the magnetic detection sensor C becomes "0", and at this time, the position becomes "N".

Further, at the position of the manual shaft 11, the output signals of the magnetic detection sensors A, B and C become "1", at this time, the position is "D", and at the position of the manual shaft 11, the magnetic detection sensor A outputs. The output signal is “0”, the output signals of the magnetic detection sensors B and C are “1”, the position is “3” at this time, and the output signals of the magnetic detection sensors A and B are “0” at the position of the manual shaft 11. , The output signal of the magnetic detection sensor C becomes "1", at this time, the position is "2", and finally, at the position of the manual shaft 11, the output signals of the magnetic detection sensors A and C are "1", the magnetic detection The output signal of the sensor B becomes "0", and at this time, the position can be arranged so that "L" can be detected.

Needless to say, the permanent magnets and the magnetic detection sensor can be modified in various ways as long as the position can be detected. FIG. 3 shows the second aspect of the present invention.
FIG. 4 is a configuration diagram of a position detection switch showing an embodiment, and FIG. In this embodiment, instead of the position detecting means by the permanent magnet and the magnetic detecting sensor of the first embodiment, a position detecting means by a reflecting member and a light emitting / receiving element having a transparent window is provided. It is a thing.

As shown in these drawings, a reflecting member 22 as a switching means is arranged on a manual shaft 21 as a rotating member. The light emitting element 2 having the transparent window 25 in the seal member 24 so as to correspond to the reflective member 22.
Light emitting / light receiving element 27 in which 7a and light receiving element 27b are paired
Is arranged. The light emitting / receiving element 27 is provided in the case 23.
It is arranged to be isolated from the outside. That is, E
A case 23 containing a CU (electronic control unit) is arranged separately from the manual shaft 21, and the light emitting / receiving element 27 faces the reflecting member 22 through a transparent window 25. That is, the light emitting / receiving element 27 has the space 26 isolated from the outside.

The operation of this position detection switch will be described below. By the rotation of the manual shaft 21, the reflection member 22 also rotates by a limited angle, and the position of the manual shaft 21 is detected. For example, as shown in FIG. 4, a transparent window 25 is formed in the seal member 24 of the case 23 so as to correspond to the light emitting / receiving element 27, and the manual shaft 21 is located at a position facing the transparent window 25.
When the reflecting member 22 attached to the
The light from a is reflected by the reflecting member 22, and the light receiving element 27
The light is received by b and an output signal is output, and for example, the position "D" of the shift lever can be detected.

Here again, as for the arrangement of the light emitting / receiving element and the reflecting member, as long as the position can be detected,
It goes without saying that various modifications are possible. 5 is a schematic plan view of a position detecting switch showing a third embodiment of the present invention, and FIG. 6 is a sectional view taken along the line AA of FIG. As shown in these figures, in this embodiment, an outer lever 32 attached to a manual shaft 31 as a rotating member.
A magnetic tape 33 as a switching means for operating a magnetic detection sensor (described later) is bonded to the lower surface of the. A permanent magnet may be attached instead of the magnetic tape 33. In essence, it is sufficient that it acts on the magnetic detection sensor (described later) to operate it.

A magnetic detection sensor 38 is arranged so as to face the outer lever 32 to which the magnetic tape 33 is adhered. That is, an electronic control unit (ECU) 35 integrated with a position detection switch is provided close to the outer lever 32. The electronic control unit (ECU) 35 integrated with the position detection switch is provided with the manual shaft 3 on the protrusion 34.
The case 3 which is provided with the through hole 1 and is integral with the protrusion 34
Have six. At least a portion of the case 36 facing the outer lever 32 is made of a non-magnetic material such as a plastic resin. A substrate 37 is provided inside the case 36, and IC chips and other components are provided on both sides of the substrate. Equipped with electronic components. Then, on the upper surface of the substrate 37 facing the magnetic tape 33 of the outer lever 32,
The magnetic detection sensors 38 are arranged in an arc shape. That is, the positions “P”, “R” of the manual shaft 31,
The magnetic detection sensors 38 are arranged at positions corresponding to “N”, “D”, “3”, “2” and “L”. 3
9 is a fixed part of the case.

Since the magnetic sensor 38 for detecting the position is arranged separately from the space in which the manual shaft 31 is arranged, the position detecting portion is adversely affected by the intrusion of water or the like. Can be reliably prevented. Then, when the manual shaft 31 is located at the center position in FIG. 5, the magnetic tape 33 of the manual shaft 31 acts on the magnetic detection sensor 38 at the position “D” to cause the magnetic detection sensor 38 to move. The position "D" of the manual shaft 31 can be detected from the output signal.

Although the magnetic sensor is mounted on the upper surface of the substrate in the above embodiment, the magnetic sensor is mounted on the upper surface of the substrate, as shown in FIGS.
It may be mounted on the inner surface of the case as shown in FIG. That is, the case 36
The magnetic detection sensor 44 is mounted on the inner surface of the
It is also possible to connect the wiring to the wiring on the substrate 41 that separates the space 45 via the bonding wire 42.

FIG. 9 is a schematic plan view of a position detecting switch showing a fourth embodiment of the present invention, and FIG. 10 is a sectional view taken along line CC of FIG. As shown in these figures, in this embodiment, the lower surface of the outer lever 52 attached to the manual shaft 51 as a rotating member is a light reflecting surface 52a capable of reflecting light as a switching means. It should be noted that various modifications such as providing a light emitting element instead of the light reflecting surface 52a and arranging a light receiving element in the case can be performed.

A light emitting / light receiving element 58, which is a pair of a light emitting element 58a and a light receiving element 58b, is arranged so as to face the light reflecting surface 52a. That is, the electronic control device (E
CU) 54 is provided. The electronic control unit (ECU) 54 integrated with the position detection switch has a through hole for the manual shaft 51 in the protruding portion 53 and has a case 55 integrated with the protruding portion 53.

At least a portion of the case 55 facing the outer lever 52 is formed of a transparent window 56, and a substrate 57 is arranged inside the case 55.
7 has an IC chip and other electronic components mounted thereon. The light emitting / receiving elements 58 are arranged in an arc shape on the upper surface of the substrate 57 facing the light reflecting surface 52a of the outer lever 52. That is, the manual shaft 51
Position "P", "R", "N", "D", "3",
Light emitting / receiving element 58 is provided at a position corresponding to "2" and "L".
Is arranged.

Therefore, when the manual shaft 51 is at the central position in FIG. 9, the light reflecting surface 52a of the outer lever 52 acts on the light emitting / receiving element 58 at the position "D" to emit light. The light from the element 58a is reflected by the light reflecting surface 52a of the outer lever 52, and the light receiving element 5
The output signal is output from 8b, and the manual shaft 5
Position 1 "D" can be detected.

In the above embodiment, the light emitting / receiving element 5
8 is configured so as to be mounted on the upper surface of the substrate 57.
As shown in FIGS. 1 and 12 (viewed from the direction D in FIG. 11), it may be mounted on the inner surface of the case 55. That is, the light emitting / receiving element 64 in which the light emitting element 64a and the light receiving element 64b are paired is mounted on the inner surface of the case 55, and the lead wire 63 is laid to extend to the wiring on the substrate 61 that separates the space portion 65. Wiring may be performed via the bonding wire 62.

The present invention is not limited to the above embodiments, and various modifications can be made based on the spirit of the present invention, and these modifications are not excluded from the scope of the present invention.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a position detection switch showing a first embodiment of the present invention.

FIG. 2 is a timing chart of output signals from the position detection switch showing the first embodiment of the present invention.

FIG. 3 is a configuration diagram of a position detection switch showing a second embodiment of the present invention.

FIG. 4 is a sectional view of a main portion of a position detection switch showing a second embodiment of the present invention.

FIG. 5 is a plan view of a main portion of a position detection switch showing a third embodiment of the present invention.

FIG. 6 is a sectional view taken along line AA of FIG. 5;

FIG. 7 is a sectional view showing a partially modified example of the position detection switch according to the third embodiment of the present invention.

FIG. 8 is a side view showing a partially modified example of the position detection switch according to the third embodiment of the present invention.

FIG. 9 is a plan view of a main part of a position detection switch showing a fourth embodiment of the invention.

10 is a cross-sectional view taken along the line CC of FIG.

FIG. 11 is a sectional view showing a partially modified example of the position detection switch according to the fourth embodiment of the present invention.

FIG. 12 is a side view showing a partially modified example of the position detection switch according to the fourth embodiment of the present invention.

FIG. 13 is a sectional view of a conventional position detection switch.

[Explanation of symbols]

11, 21, 31, 51 Manual shaft (rotating member) 12 Permanent magnet (switching means) (output means) 13, 23, 36, 55 Case 14, 24 Sealing member 15, 26 Isolated space 16, 38, 44 Magnetic detection sensor (input means) 22 Reflecting member (switching means) 25,56 Transparent window 27,58,64 Light emitting / light receiving element (input / output means) 27a, 58a, 64a Light emitting element (output means) 27b, 58b, 64b Light receiving element (input means) 32,52 Outer lever 33 Magnetic tape (switching means) (output means) 34,53 Projection part 35,54 Position detection switch integrated electronic control unit (ECU) 37,41,57,61 Substrate 42,62 Bonding wire 43,63 Lead wire 45,65 Space part 52a Light reflecting surface (switching means)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshiya Morishita 10 Takane, Fujii-cho, Anjo City, Aichi Prefecture Aisin AW Co., Ltd. (72) Naoto Ogasawara 10 Takane, Fujii-cho, Anjo City, Aichi Prefecture Aisin・ AW Co., Ltd. (72) Inventor Naotaka Murakami 10 Takane, Fujii-cho, Anjo City, Aichi Prefecture・ AW Co., Ltd.

Claims (3)

[Claims] 1. A position detection switch having a case, a rotating member that rotates with the operation of a shift lever, an output means, and an input means, wherein the input means uses an output from the output means as an input. Depending on whether or not the rotating member has a switching unit, the rotating member has a switching unit, and the rotating of the switching unit by rotating the rotating member causes the first unit of the input unit to rotate.
State, a second state is switched, and a position detection unit for detecting the shift lever position based on the first state and the second state of the input means is included, and the position detection unit is included in the case and the rotation is performed. The position detecting switch, wherein the member is arranged separately from the space where the position detecting section is arranged. 2. The position detection switch according to claim 1, wherein the rotating member is a manual shaft that mechanically transmits the operation of the shift lever to a manual valve, and the switching means is arranged on the manual shaft. Characteristic position detection switch. 3. The position detection switch according to claim 1, wherein the rotating member is an outer lever that mechanically transmits the operation of the shift lever to a manual shaft, and the switching means is arranged on the outer lever. Position detection switch.