JP3470532B2 - Electronic control unit with integrated neutral start switch - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control unit for an automatic transmission, and more particularly to a control unit in which a neutral start switch mounted on the main body of an automatic transmission and an electronic control unit for gear shift control are integrated.

[0002]

2. Description of the Related Art Conventionally, in an automatic transmission, a hydraulic control device incorporated in its main body is controlled by an electronic control device,
The automatic transmission main body and the electronic control unit are separately mounted at different locations in the vehicle, and are configured to automatically shift within a range selected by a driving operation. Both of these devices are individually and individually subject to sufficient quality control, but since they must exhibit the desired performance when they are finally connected, quality control in the connected state is also necessary. Is. By the way, since the connection between the main body of the automatic transmission and the electronic control device is carried out when the vehicle is installed, the automatic transmission main body and the electronic control device to be combined up to that point should be managed in a one-to-one correspondence relationship. However, adjustments must be made to match the two after they are mounted on the vehicle. Under these circumstances, comprehensive quality control of an automatic transmission is difficult and requires many man-hours. In addition, as described above, because the mounting location on the vehicle is different, the wire harness that connects the two becomes long, so it is easily affected by electromagnetic noise and requires man-hours for wiring. There are various problems such as the need for a space for

Therefore, attempts have been made to solve the above problems by integrating the automatic transmission main body and the electronic control unit. As an example of this, Japanese Patent Publication No. 5-70023
There is a technique disclosed in the publication. In this technology, in order to output the range position selected by the vehicle driver's selection operation to the electronic control device as an electric signal, the electronic control device is installed in the case of the neutral start switch conventionally mounted on the automatic transmission casing. By incorporating them, the automatic transmission body and the electronic control unit are integrated.

[0004]

By the way, the neutral start switch not only outputs the range position as an electric signal to the electronic control unit as described above, but also a drive circuit for driving the starter motor and lighting the reverse lamp. Since it is to connect and disconnect, it is indispensable to connect and disconnect the fixed contact and the movable contact with mechanical opening and closing operation, so it is inevitable to generate metal powder due to wear due to sliding of the contacts . Therefore, in order to reduce such wear and operation resistance, grease is applied to the contact part in order to reduce the friction coefficient when the fixed contact and the movable contact slide, but as is well known, mechanical contact is not An arc is generated when they come into contact with each other or when they are dissociated, so that the grease is splashed by the arc and the metal powder or the mixture thereof is scattered around. These scattered substances adhere to the circuit board of the electronic control unit, and the accumulation thereof contaminates the board, which adversely affects the circuit operation. However, the above-mentioned conventional techniques have not yet been able to recognize such problems. Therefore, the solution is not specially applied.

Therefore, according to the present invention, when the electronic control unit and the neutral start switch are integrated as described above, it is necessary to protect the substrate of the electronic control unit from the attachment of scattered matter due to the opening / closing operation of the switch contacts. The purpose of 1.

A second object of the present invention is to reduce the size of the neutral start switch portion in the radial direction while achieving the first object, thereby making the entire control unit compact.

A third object of the present invention is to reduce the thickness of the neutral start switch section while achieving the first object, thereby making the entire control unit compact.

Further, the present invention, while achieving the above-mentioned second object, prevents the electronic control unit from being electromagnetically affected by the operation of the contact for the drive circuit of the neutral start switch. To aim.

A fifth object of the present invention is to accurately correspond the operation of the drive circuit contacts to the operation of the position signal contacts while achieving the third object.

A sixth object of the present invention is to make the operation of the drive circuit contacts correspond to the operation of the position signal contacts with high accuracy while achieving the fourth object.

A seventh object of the present invention is to shorten the connection between the neutral start switch and the electronic control unit while achieving the sixth object.

Further, an eighth object of the present invention is to simplify the wiring between the neutral start switch and the electronic control unit while achieving the seventh object.

A ninth object of the present invention is to improve the oil tightness of the electronic control unit case while achieving the eighth object.

Further, according to the present invention, the first object is to reduce the thickness of the entire control unit while achieving the ninth object.
The goal is 0.

An eleventh object of the present invention is to reduce the overall size of the control unit in the width direction while achieving the tenth object.

[0016]

In order to solve the above-mentioned problems, the present invention relates to an electronic control unit having a microcomputer having an automatic shift control program built-in, and to the electronic control unit a select position signal for shift control. Integrating a neutral start switch for inputting, a neutral start switch integrated electronic control unit, the electronic control unit is configured by a substrate on which a plurality of elements are arranged, the neutral start switch, a rotor, The substrate and the rotor have contacts that are activated by rotation of the rotor, and the substrate and the rotor are arranged in parallel with each other in a case that accommodates them, with an intermediate wall of the case interposed therebetween.
The intermediate wall shields at least the contacts in an oil-tight manner.

In order to achieve the second object, the contacts of the neutral start switch are arranged on both sides of the rotor.

Further, in order to achieve the third object, the contact of the neutral start switch is arranged on one surface of the rotor.

Further, in order to achieve the above-mentioned fourth object, the contact of the neutral start switch comprises a position signal contact and a drive circuit contact, and at least the drive circuit contact is separated from the substrate by sandwiching the rotor. It is arranged on the opposite side.

Further, in order to achieve the fifth object, the contact of the neutral start switch is composed of a position signal contact and a drive circuit contact, and at least the drive circuit contact is within the range of the rotation locus of the rotor. It is arranged on the outer peripheral side in the radial direction.

Further, in order to achieve the sixth object, the drive circuit contacts are arranged on the outer peripheral side in the radial direction within the range of the rotation trajectory of the rotor.

Further, in order to achieve the seventh object, the position signal contact is arranged between the intermediate wall and the rotor.

Further, in order to achieve the eighth object, the case comprises an electronic control unit case for accommodating a substrate and a switch case for accommodating a rotor, and the electronic control unit case is a part of the switch case. Is configured.

Further, in order to achieve the ninth object, a manual shaft connected to the rotor, one end of which is connected to a shift lever and the other end of which is connected to a manual valve, penetrates the switch case and The control device case is arranged on the opposite side of the switch case from the automatic transmission casing.

Further, in order to achieve the tenth object,
The electronic control unit case and the switch case have an overlap portion that axially overlaps with each other in a range corresponding to the rotation locus of the rotor, and a portion located on the overlap portion of both cases on the surface of the substrate. Has a structure in which relatively short elements are arranged, and relatively tall elements are arranged in a portion outside the overlap portion.

Further, in order to achieve the eleventh object,
The elements are arranged on both sides of the substrate.

[0027]

According to the present invention, various problems caused by the automatic transmission and the electronic control unit being arranged apart from each other can be solved. Moreover, since the contact between the substrate and the neutral start switch is completely separated by the intermediate wall, the operation of the neutral start switch does not adversely affect the electronic control unit.

Further, according to the second aspect of the invention, the radial dimension of the neutral start switch portion is reduced, and as a result, the entire control unit as an assembly of the neutral start switch and the electronic control unit can be made compact. You can

According to the third aspect of the present invention, the thickness of the neutral start switch portion can be reduced, and as a result, the entire control unit as an assembly can be similarly made compact.

According to the structure described in claim 4, since the substrate is placed at a position away from the drive circuit contact, a change in the magnetic field caused by a large current change due to the opening and closing of the drive circuit contact causes noise. As a result, the possibility of affecting the signal of the electronic control unit is reduced, and the reliability of the operation of the electronic control unit is improved.

According to the fifth aspect of the present invention, since the drive circuit contacts are arranged on the radially outer side within the range of the rotation trajectory of the rotor, the circumferential distance with respect to the rotation angle of the rotor is set. The position of the contact can be accurately set as long as it can be taken, and the starter motor and the reverse lamp can be reliably operated in a predetermined range.

According to the sixth aspect of the invention, since the drive circuit contacts are arranged on the outer peripheral side in the radial direction within the range of the rotation trajectory of the rotor, the circumferential distance with respect to the rotation angle of the rotor is set. The position of the contact can be accurately set as long as it can be taken, and the starter motor and the reverse lamp can be reliably operated in a predetermined range.

According to the structure of claim 7, the position signal contact, which is indispensable to be connected to the substrate, is arranged in a position close to the substrate, so that the wiring for connecting the terminal of the substrate and the position signal contact is provided. Can be shortened, the cost can be reduced accordingly, and the possibility of picking up noise from the wiring portion can be reduced.

According to the structure described in claim 8, it is not necessary to join the wiring between the substrate and the position signal contact over the case, the processing man-hour required for connecting the wiring can be reduced, and the wiring failure can be prevented. It can be lost.

According to the ninth aspect of the invention, since the manual shaft penetrates only the switch case of the control unit, there is no movable member penetrating the inside and outside of the electronic control unit case, and the electronic control unit case side is waterproof. Is surely done. Further, since the board is arranged on the side opposite to the automatic transmission casing with respect to the switch case, even if the electronic control unit fails, it is possible to easily replace only the board and maintain workability. Is improved.

According to the structure of the tenth aspect, the overlapping portion inevitably increased in thickness due to the axial wrapping between the rotor and the substrate is made as thin as possible, and the other portions are Since the thickness can be averaged with the thickness, the thickness of the control unit as an assembly can be made thin as a whole, which can be made compact.

According to the eleventh aspect of the present invention, the dimension of the substrate in the plate surface direction can be reduced, so that the width of the control unit as an assembly can be reduced and the size can be reduced.

[0038]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 to 11 show the first embodiment,
An electronic control unit (ECU) integrated with a neutral start switch (NSW), as shown in cross section in FIG.
Is a case 10, a back cover 20, and a front cover 30.
And a rotor 40 and a substrate 50. Hereinafter, these components and their mutual relations will be described in detail in order.

First, the case 10 is made of a resin material having a good electric insulation property, and as shown in the front view of FIG. 2 and the back side of FIG. 3, a fan-shaped switch case 11 on the back side and a rectangular electronic case on the front side. The control device case 12 is combined with each other, and an intermediate wall 13 (see FIG. 1) separates the both cases. The switch case 11 of the case 10 is arranged such that its fan-shaped key portion is displaced from the electronic control unit case 12. Therefore, the electronic control unit case 12 and the switch case 11 are in a range corresponding to the rotation locus of the rotor 40. Overlap portion 10a that axially overlaps with each other
(The shape of the portion viewed from the front is shown in FIG. 2 as having a substantially rectangular shape in which the bottom side and both sides are straight lines and the top side is arcuate), and the rotor 40 is located at the position of the key portion.
Sleeve sleeve 43 (see FIG. 1) is rotatably fitted,
Further, an oil seal 6 that seals the periphery (see FIG. 1)
Is formed with a stepped hole 19 for inserting. Therefore, the sleeve shaft portion 43 does not pass through the electronic control unit case 12. On the other hand, on the electronic control unit case 12 side, integrally molded connector sockets 14 and 15 for transmitting and receiving signals, which are provided from two sides of the rectangle, are formed. A pair of mounting flanges 16 each having a bolt insertion hole for fixing the case 10 to the automatic transmission casing C (see FIG. 1) are provided at a substantially diagonal position of the electronic control unit case 12 so as to project therefrom.

Next, the back cover 20 is made of the same material as the case 10, and as shown in the inner surface of FIG.
It has a fan shape that corresponds to the outer shape of the switch case 11 of 0,
It is shaped so that it can be fitted and positioned in the case 10 by the spigot connection. Similar to the case 10, a stepped hole 21 for inserting the sleeve shaft portion 43 of the rotor 40 and inserting the oil seal 6 that seals the periphery thereof is also formed in the fan cover portion of the back cover 20. An integrally molded connector socket 22 is formed so as to project. Further, a seal ring groove 23 for fitting an O-ring is formed around the peripheral edge of the case 10 with the switch case 11.

The front cover 30 is formed in a rectangular plate shape made of a material such as aluminum having good heat conductivity, and is formed as shown in FIGS.
As shown in FIG. 7 for the outer surface, the inner surface, and the side surface, a plurality of parallel heat radiation fins 31 are provided on the outer surface, and heat transfer projections 32 are integrally formed on the inner surface. At the edge of the mating surface with the electronic control unit case 12 of
A seal ring groove 33 for fitting the O-ring is formed around the periphery. The plurality of mounting flange portions 34, which are formed to intermittently project along the peripheral edge, can be fastened to the front side of the case 10 by screwing.

The rotor 40 is made of the same material as the case 10, and has a hole 42 at one end of the arm portion 41, through which a manual shaft is inserted, as shown in the front surface, the side cross section and the rear surface in FIGS. The sleeve shaft portion 43 is provided. On the front surface and the back surface of the arm portion 41, rectangular block-shaped conductors 45a to 45f, which are long in the radial direction of the arm portion 41 and each of which has a coil spring 44 for pressing behind, are movably embedded in the axial direction. There is. Of these conductors 45, four conductors 45a to
The pair of conductors 45d and 45f are arranged on the front surface side of the arm portion 41 in the radial direction on a front side and are displaced from each other in the circumferential direction, and the two conductors 45e and 45f are arranged on the rear surface side of the arm portion 41 in the radial direction. Are arranged side by side. And conductor 4
Radial inner portions of the conductors 45a, 45c and the conductors 45b, 45
The outer peripheral portion of d is wrapped in the circumferential direction.

The hole 42 of the sleeve shaft 43 has a cylindrical shape in a portion having a length approximately half the axial length thereof, and the remaining half length has a width across flats in which the opposite circumferential surfaces of the cylinder are left in parallel. It is said that. The rotor 40 includes the stepped hole 19 of the case 10,
The sleeve shaft portion 43 is rotatably fitted in the stepped hole 21 of the rear cover 20, and the arm portion 41 is sandwiched between the case 10 and the rear cover 20 and disposed in the space surrounded by them. A pair of oil seals 6 seal between the shaft periphery of the sleeve shaft portion 43 and the stepped holes 19, 21. Further, electrically insulating grease is filled in the space, and wear of the drive circuit and position signal switch parts SW1, SW2, that is, the fixed contacts Pp, Ps,
Ps ′, Pr and conductors 45a to 4 provided on the rotor 40
Acts as a lubricant to prevent abrasion with 5f.

As shown in FIG. 1, a drive circuit switch section SW1 is formed between the rotor 40 and the back cover 20. The drive circuit switch section SW1 is formed by stamping from a strip-shaped connecting line 24 embedded in the rear cover 20, and is exposed to the inner surface of the rear cover 20 for two pairs of starter motor circuits as shown in FIG. Contact points Ps, P
s ′ and a pair of reverse lamp lighting circuit contacts Pr,
The conductors 45e and 45f are fixed to the arm portion 41 of the rotor 40 and connect the pair of contacts to each other. In this embodiment, the connecting wire 24 is guided as it is into the inside of the connector socket 22 and serves as a terminal 28. Thus, the connection line 24 constitutes a circuit in the rear cover 20 that returns from the connector terminal 28 to the same terminal and is completed independently of the case 10 only by the rear cover 20.

Further, a position signal switch section SW2 is formed between the rotor 40 and the case 10, and the position signal switch section SW2 is provided on the inner surface of the switch case 11 of the case 10 in this embodiment. It is composed of a large number of contacts Pp formed by stamping from a fixed strip-shaped connecting wire 17, and conductors 45a to 45d fixed to the arm portion 41 of the rotor 40. The connection line 17 integrated with the contact point Pp is led out to the board connecting pad portion in the electronic control unit case 12 through the intermediate wall 13 of the case 10, where the terminals of the board 50 are connected by means of wire bonding or the like. Connected to the department. In this way, the connection line 17 has a function of directly connecting the neutral start switch (NSW) and the electronic control unit (ECU) in the case 10.

The substrate 50 constituting the electronic control unit is made of a ceramic material having excellent heat resistance, and as is well known, a microcomputer chip, a transistor, a resistor, a It has a structure in which various circuit elements such as a capacitor are arranged, and is arranged so as to come into contact with a step portion in the electronic control unit case 12, and the pad portion is similar to the terminal connection line group 18 of the two connector sockets 14 and 15. Are connected by means such as wire bonding. Each terminal connection wire group 18 passes through the inside of the case 10 and is led out into the connector sockets 14 and 15 to serve as their connection terminals. These connector sockets 14 and 15 are connected to a solenoid valve of a hydraulic control device arranged in the main body of the automatic transmission, various sensors, sensors of various parts of the vehicle, and an engine control device.

The plate surface of the substrate 50 is arranged in parallel with the rotation orbit surface of the rotor 40, and is superposed on each other when viewed in the direction of the rotation center axis of the rotor 40, that is, in the direction perpendicular to the plate surface and the rotation orbit surface. The board-side overlap portion 50a substantially corresponds to the case overlap portion 10a. With respect to the substrate 50 arranged in this way, the elements 51a which are relatively short among the elements due to resistance or the like are arranged on both front and back surfaces of the overlap portion 50a, and the elements such as capacitors are relatively short. The taller element 51b is the overlap part 5
It is arranged on the substrate portion 50b other than 0a. In addition,
The gap between the substrate 50 and the front cover 30 is filled with a resin R having good thermal conductivity to eliminate the presence of an air layer, and heat generated in the substrate 50 functions as a heat dissipation plate. It is easy to convey to.

Thus, according to the arrangement of the above embodiment,
Various problems caused by disposing the automatic transmission and the electronic control device at a distance can be solved. In particular, the substrate 50
Since the contacts of the neutral start switch (NSW) and the neutral start switch (NSW) are completely separated by the intermediate wall 13 of the case 10, the operation of the neutral start switch (NSW) does not adversely affect the electronic control unit (ECU).

Further, the neutral start switch (N
The size of the (SW) portion in the radial direction is reduced, and as a result, the neutral start switch (NSW) and the electronic control unit (ECU) can be made compact as an assembly. Further, the substrate 50 is connected to the drive circuit contacts Ps, P.
Since it will be placed away from s', Pr,
A change in the magnetic field caused by a large change in current due to the opening and closing of the contacts for the drive circuit causes noise in the electronic control unit (EC).
U) signal is less likely to be affected, and the reliability of operation of the electronic control unit is improved. Moreover, since the drive circuit contacts Ps, Ps ′, and Pr are arranged on the outer peripheral side in the radial direction within the range of the rotor rotation locus, the opening / closing stroke of the contact with respect to the rotation angle of the rotor 40 is smaller than that on the inner peripheral side. It is possible to take a large value, so that the drive circuit contacts Ps, P
The opening / closing timing of s ′ and Pr can be matched with the switching timing of the position signal contact Pp with high accuracy. Therefore, it is possible to prevent a deviation in the operation timing of the starter motor or the reverse lamp that operates by opening and closing the drive circuit contacts.

Further, since the position signal contact Pp, which is indispensable for connection with the substrate 50, is arranged at a position close to the substrate 50, the wiring connecting the terminal of the substrate 50 and the position signal contact Pp should be shortened. Therefore, the cost can be reduced and the possibility of picking up noise from the wiring portion can be reduced. Furthermore, it is not necessary to join the wiring between the substrate 50 and the position signal contact Pp across the cases 11 and 12, so that the processing man-hours required for routing the wiring can be reduced and the defective connection can be eliminated.

Moreover, since the manual shaft S is arranged to penetrate only the switch case 11 of the control unit, there is no movable member penetrating the inside and outside of the electronic control unit case 12, so that the electronic control unit case 12 side is reliably waterproofed. . Further, since the board 50 is arranged on the opposite side of the switch case 11 from the automatic transmission casing C, the control unit can be removed from the automatic transmission casing C even if a failure of the electronic control unit (ECU) occurs. It is possible to easily replace only the substrate 50 without it, and the workability of maintenance is improved.

Further, the thickness of the overlapped portion 10a, which cannot be prevented from becoming thick due to the axial wrapping of the rotor 40 and the substrate 50, is made as thin as possible, and the thickness of other portions is averaged. Therefore, the thickness of the control unit can be reduced as a whole, and the substrate 50 can be made thin.
Since it is possible to reduce the dimension in the plate surface direction, it is possible to reduce the width of the control unit and make it compact.

The control unit thus constructed is fixed to the automatic transmission casing C as shown in FIG. 1, and the shift lever L on the shift device side is shown in FIG. The rotation about the axis X is transmitted to the outer lever A on the main body of the automatic transmission through the control wire T, and the manual shaft S rotates. And
The rotation of this manual shaft S rotates the rotor 40 (shown in phantom in the figure) attached thereto. The figure shows the state in which the shift lever L is in the neutral range “N” position. From this state, when the lever L is pushed forward, that is, in the reverse range “R” or parking range “P” position direction, the wire T is pushed. As a result, the outer lever A rotates in the direction of the outlined arrow, and the lever L
To the rear, that is, the drive range “D”, the third range “3”, the second range “2”, and the low range “L” position direction, the outer lever A is pulled by the wire T.
Rotates in the direction of the black arrow shown in the figure. With such an operation, the contact switching of the neutral start switch and the sliding switching operation of the manual valve M in the valve body B of the hydraulic control device occur.

In such an operation, on the neutral start switch (NSW) side, the starter contacts Ps and Ps' shown in FIG. 4 are connected to the conductor 4 of the rotor 40 at the neutral range "N" and the parking range "P" positions.
5e, the reverse contact Pr is closed via the conductor 45f in the reverse range "R" position, and in parallel, the position signal switch unit SW2 is closed by the same contact so that the corresponding neutral position is established. The range “N”, parking range “P” position signal or reverse range “R” position signal is output to the board 50. In addition, the drive range "D" position and other ranges "3", "2", "L"
At the position, only the position signal switch section SW2 is operated, and the corresponding position signal is output to the substrate 50 through the connection line 17 by closing the contacts.

Next, FIG. 12 shows a second embodiment of the present invention. In this form, unlike the first embodiment, the switch section SW is arranged on one side of the rotor 40. That is, the neutral start switch (NS
W) indicates the intermediate wall 1 of the case 10 corresponding to the turning locus of the conductor provided on the rotor 40, as in the first embodiment.
3 has a contact P embedded therein. The specific configurations of these contacts and conductors are the same as those of the first embodiment. The rest of the configuration is the same as that of the first embodiment,
The same reference numerals are attached and replaced with the description.

With such an arrangement, the area of the overlapping portion 10a is larger than that of the first embodiment, and when the outer area of the case 10 is the same, a space where tall elements can be arranged can be arranged. However, since it is easy to reduce the thickness of the rotor 40, the total thickness can be reduced. Further, the stroke of the outer peripheral side contact can be further increased.

Next, FIG. 13 shows a third embodiment of the present invention. In this embodiment, the switch portion SW is arranged on one side with respect to the rotor 40, which is the same as the second embodiment, except that the arrangement position is the back cover 20. The rest of the configuration is the same as that of the second embodiment, and therefore, the same reference numerals are attached and replaced with the description.

The advantage of such an arrangement is that the contacts are moved away from the substrate 50, so that the electronic control unit (ECU)
The possibility that the magnetic field change due to the opening and closing of the switch contact will affect the signal of
The point is that the operation reliability of U) is improved.

Next, FIG. 14 shows a fourth embodiment of the present invention. In this embodiment, the switch SW is arranged on one side with respect to the rotor 40, and the arrangement position thereof is the back cover 20, which is similar to the third embodiment, but the intermediate wall 13 is different from the case 10. The difference is that it is a body. Since the rest of the configuration is the same as that of the third embodiment, the same reference numerals are given and replaced with the description.

According to this arrangement, since the intermediate wall 13 is a separate member, it is necessary to dispose the sealing material 7 that makes the case 10 and the intermediate wall 13 oil-tight, but it is a separate member. By taking advantage of a certain point and the point that no insulation is required for the setting arrangement, the intermediate wall 13 is made of a material having an excellent electromagnetic shielding property, whereby a noise shielding effect on the electronic circuit of the substrate 50 can be obtained. There is a point that can be done. In this arrangement, the scattering of grease and metal abrasion powder toward the electronic control unit case 12 side is also alleviated by being blocked by the rotor 40.

Finally, FIG. 15 shows a fifth embodiment of the present invention. This form has substantially the same configuration as that of the first embodiment, but the contact for each drive circuit is the rotor 40.
The difference is that they are arranged closer to the inner peripheral side in the rotation locus. The purpose of such an arrangement is to prevent noise by making the contact for each drive circuit away from the substrate 50 as much as possible.

In summary, the automatic transmission and the electronic control unit (E) are commonly used in any of the above embodiments.
CU), the assembly workability, the number of man-hours for installation, and the problems related to quality control caused by the disposition of the CU) are solved, and further, the contacts Ps, Ps' of the substrate 50 and the neutral start switch (NSW) are further solved. , Pr, Pp are completely separated from each other by the intermediate wall 13 of the case 10 to prevent metal powder generated by contact wear of the neutral start switch (NSW) from adversely affecting the operation of the electronic control unit (ECU). can do.

The present invention has been described above in detail based on the embodiments. However, the present invention is not limited to the disclosure of the above embodiments, and various details can be obtained within the scope of the matters described in the claims. It goes without saying that the specific configuration can be changed and implemented.

[Brief description of drawings]

FIG. 1 is a sectional view showing a first embodiment of a control unit of the present invention.

FIG. 2 is a front view of the case in the above embodiment.

FIG. 3 is a rear view of the case.

FIG. 4 is an inner view of the back cover in the above embodiment.

FIG. 5 is an external view of the front cover in the above embodiment.

FIG. 6 is an inner view of the front cover.

FIG. 7 is a side view of the front cover.

FIG. 8 is a front view of the rotor according to the above embodiment.

FIG. 9 is a side sectional view of the rotor.

FIG. 10 is a rear view of the rotor.

FIG. 11 is a layout explanatory view showing a connection relationship between the automatic transmission main body and the shift device of the control unit.

FIG. 12 is a sectional view showing a second embodiment of the control unit of the present invention.

FIG. 13 is a sectional view showing a third embodiment of the control unit of the present invention.

FIG. 14 is a sectional view showing a fourth embodiment of the control unit of the present invention.

FIG. 15 is a sectional view showing a fifth embodiment of the control unit of the present invention.

[Explanation of symbols]

NSW neural start switch ECU electronic control unit 10 cases 11 switch case 12 Electronic control unit case 13 Middle wall 40 rotor 50 substrates 50a Overlap part 51a, 51b elements Pp position signal contact Pr, Ps, Ps' drive circuit contacts C automatic transmission casing L shift lever M Manual valve S Manual shaft

─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Naotaka Murakami 10 Takane, Fujii-cho, Anjo City, Aichi Prefecture Aisin AW Co., Ltd. (72) Innovator Naoto Ogasawara 10 Takane, Fujii-cho, Anjo City, Aichi Prefecture Aisin・ AW Co., Ltd. (72) Inventor Toshiya Morishita 10 Takane, Fujii-cho, Anjo City, Aichi Prefecture Aisin AW Co., Ltd. (72) Inoue Kano 10 Takane, Fujii-cho, Anjo City, Aichi Prefecture Aishi (56) References JP-A-7-35225 (JP, A) JP-A-8-58417 (JP, A) JP-A-9-79359 (JP, A) JP-B 5 -70023 (JP, B2) (58) Fields investigated (Int.Cl. ⁷ , DB name) F16H 61/26-61/36 F16H 63/40-63/48 B60K 20/00-20/08 F16H 59 / 00-61/12 F16H 61/16-61/24 F16 H 63/40-63/48

Claims (11)

(57) [Claims] 1. A neutral start switch in which an electronic control device having a microcomputer having an automatic shift control program built-in and a neutral start switch for inputting a select position signal for gear shift control to the electronic control device are integrated. In the body-type electronic control unit, the electronic control device includes a substrate on which a plurality of elements are arranged, the neutral start switch has a rotor and a contact operated by rotation of the rotor, and the substrate and the rotor are A neutral start switch according to claim 1, characterized in that the board is arranged in parallel to each other in a case accommodating them, with an intermediate wall of the case interposed therebetween, and the board is oil-tightly shielded from at least the contacts by the intermediate wall. Physical electronic control unit. 2. The electronic control unit with integrated neutral start switch according to claim 1, wherein the contacts of the neutral start switch are arranged on both sides of the rotor. 3. The neutral start switch integrated electronic control unit according to claim 1, wherein the contacts of the neutral start switch are arranged on one surface of the rotor. 4. The contact of the neutral start switch includes a position signal contact and a drive circuit contact, and at least the drive circuit contact is arranged on the opposite side of the substrate with the rotor interposed therebetween. Electronic control unit with integrated neutral start switch. 5. The contact of the neutral start switch includes a position signal contact and a drive circuit contact, and at least the drive circuit contact is arranged on the outer peripheral side in the radial direction within the range of the rotation trajectory of the rotor. , Claim 2 or 3
Electronic control unit with integrated neutral start switch. 6. The neutral start switch-integrated electronic control unit according to claim 4, wherein the drive circuit contacts are arranged on an outer peripheral side in a radial direction within a range of a rotation locus of the rotor. 7. The neutral start switch integrated electronic control unit according to claim 4, 5 or 6, wherein the position signal contact is arranged between the intermediate wall and the rotor. 8. The neutral according to claim 7, wherein the case comprises an electronic control unit case for accommodating a substrate and a switch case for accommodating a rotor, and the electronic control unit case constitutes a part of the switch case. Electronic control unit with integrated start switch. 9. A manual shaft, which is connected to the rotor, one end of which is connected to a shift lever and the other end of which is connected to a manual valve, penetrates the switch case, and the electronic control unit case is connected to the switch case. The automatic transmission casing is disposed on a side opposite to the casing.
9. The neutral start switch integrated electronic control unit according to any one of items 8 to 8. 10. The electronic control unit case and the switch case have an overlapping portion that axially overlaps each other in a range corresponding to a rotation locus of the rotor, and on the surface of the substrate,
10. A relatively short element is arranged in a portion located in the overlapping portion of both cases, and a relatively tall element is arranged in a portion separated from the overlapping portion. An electronic control unit integrated with a neutral start switch according to any one of 1. 11. The neutral start switch integrated electronic control unit according to claim 1, wherein the elements are arranged on both sides of a substrate.