JP2002364506A - Controller integral with engine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate production and reduce a cost. SOLUTION: This controller integral with an engine connected to electrical equipment installed on the outer periphery of the engine and having a branch circuit comprises a cylinder head cover 4 formed of a heat resistant insulation material and a bus-bar circuit body 8 buried in a cylinder head cover 4, having a branch circuit part 9 formed therein, and having a plurality of contacts 10a to 10g connected to the electrical equipment formed at the terminal thereof. Connector fitting parts 12a to 12f are installed around the plurality of contacts 10a to 10f, and a connector 37 connected to the electrical equipment such as a water temperature detection sensor and a cam shaft phase detection sensor is fitted to the connection fitting parts 12a to 12f.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an engine-integrated control device provided integrally with an engine.

[0002]

2. Description of the Related Art A conventional engine-integrated control device 100 of this type is disclosed in Japanese Unexamined Patent Publication No.
There is one disclosed in Japanese Patent Publication No. 317556. As shown in FIGS. 13 and 14, a wiring portion (branch circuit portion) arranged along the wall surface of the cylinder head cover 101 is provided.
102, a plurality of contacts 103 connected to the terminals of the wiring portion 102, and a plurality of connector fitting portions 104 provided around the plurality of contacts 103 approaching each other as one block. ing. Then, a connector (not shown) connected to an electronic component, an engine control unit, or the like is fitted into each connector fitting portion 104.

According to the engine-integrated control device 100, the wiring portion 102 is routed on the cylinder head cover 101, and the contact 1
Since the connector 03 and the connector fitting portion 104 can be freely arranged, there is an advantage that the amount of wire harness routed around the engine can be extremely reduced.

[0004]

However, in the conventional engine-integrated control device 100, it is necessary to connect the wiring portion (branch circuit portion) 102 and the plurality of contacts 103 by some means, so that the manufacturing is complicated. In addition, there is a problem that the cost is high.

Further, since the connector fitting portion 104 is disposed almost all around the cylinder head cover 101, it is necessary to arrange the wire harness in a complicated manner so as to surround the engine. Therefore, there is a problem that the work of arranging the wire harness around the engine is troublesome and the assembling property is poor.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has as its object to provide an engine-integrated control device which can be easily manufactured and can be manufactured at low cost. It is another object of the present invention to provide an engine-integrated control device which can be manufactured easily and at low cost, simplifies the work of arranging a wire harness around the engine, and improves the assembling property. And

[0007]

The invention according to claim 1 is an engine-integrated control device which is connected to an electric component mounted on the outer periphery of the engine and has a branch circuit portion.
It has a device main body made of a heat-resistant insulating material, and a busbar circuit body embedded in the device main body, the branch circuit portion is formed, and a plurality of contacts connected to the electrical components are integrally formed with the terminal. It is characterized by the following.

[0008] In this engine-integrated control device, the branch circuit portion and a plurality of contacts are integrally formed by using a bus bar circuit body and terminals thereof, and the branch circuit portion and the plurality of contacts are connected as in the conventional example. There is no need for a step to do so.

According to a second aspect of the present invention, there is provided the engine-integrated control device according to the first aspect, wherein a connector connected to the electrical component is fitted, and the connector fitting portion in which the plurality of contacts are arranged. It is characterized in that it is provided in the apparatus main body.

In this engine-integrated control device, in addition to the operation of the first aspect of the present invention, the electrical component can be connected by fitting the connector on the electrical component side into the connector fitting portion of the device body.

According to a third aspect of the present invention, in the engine-integrated control device according to the second aspect, the fitting direction between the connector connected to the electrical component and the connector fitting portion is different from the vibration direction of the engine. It is characterized by being substantially in the same direction.

In this engine-integrated control device, in addition to the operation of the second aspect of the invention, the vibrations of the engine cause the two contact points to vibrate in the sliding direction with respect to each other.

According to a fourth aspect of the present invention, there is provided the engine-integrated control device according to any one of the first to third aspects, wherein the device main body is a cylinder head cover for closing an upper opening of the engine. .

In this engine-integrated control device, in addition to the effects of the first to third aspects of the present invention, there is no need to provide a member for burying the busbar circuit body separately from the cylinder head cover.

According to a fifth aspect of the present invention, there is provided the engine integrated control device according to the fourth aspect, wherein the cylinder head cover comprises:
A head cover body having a lower step surface one step lower than the upper surface on one side of the upper surface, and a circuit block section fixed on the low step surface of the head cover body, wherein the bus bar circuit body is embedded in the circuit block section. It is characterized by being.

In this engine-integrated control device, in addition to the function of the invention according to claim 4, the connector of the circuit block portion is concentrated on one side of the cylinder head cover, and it is necessary to arrange the wire harness in a complicated manner so as to surround the engine. There is no. Therefore, the work of arranging the wire harness around the engine is simplified and the assembling property is improved. By simplifying the wiring harness wiring work, it contributes to the elimination of disconnection and poor contact during the wiring work.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

1 to 9 show an embodiment of an engine to which an engine-integrated control device according to the present invention is applied. FIG. 1 is a perspective view of the engine as viewed from an intake side, and FIG. 2 is a view as viewed from an exhaust side. FIG. 3 is a perspective view of the cylinder head cover viewed from the intake side, which is clearly shown through a bus bar circuit body. FIG. 4 is a cylinder head cover viewed from the exhaust side, which is a transparent view of the bus bar circuit body. 5 to 7 are partially cutaway portions, respectively, but are partially cutaway sectional views of the cylinder head cover viewed from the exhaust side.
8A is a perspective view showing a state before contact between a contact on the engine control unit side and a contact on the cylinder head cover side, and FIG. 8B shows a contact state between a contact on the engine control unit side and a contact on the cylinder head cover side. FIG. 9 is a sectional view showing a mounted state of the ignition coil integrated igniter.

As shown in FIGS. 1 and 2, an intake pipe 2 and an exhaust pipe 3 are connected to the engine body 1, and air and fuel sucked from the intake pipe 2 are supplied to a cylinder chamber (see FIG. 1) of the engine body 1. (Not shown), and exhaust gas generated by combustion in a cylinder chamber (not shown) is discharged from an exhaust pipe 3. A cylinder head cover 4, which is a device body of the engine-integrated control device A, is fixed to an upper surface of the engine body 1 with bolts 5 and the like, and an opening at an upper part of the engine is closed by the cylinder head cover 4.

As shown in detail in FIGS. 3 to 7, the cylinder head cover 4 is made of a heat-resistant insulating material, and includes a baffle plate 6 and an upper cover portion 7 arranged at a predetermined interval on the baffle plate 6. And a two-layer structure. A busbar circuit body 8 is buried in the upper cover part 7, and the busbar circuit body 8 uses a branch circuit part 9 which is a wiring part of an engine control circuit and a terminal part forming the branch circuit part 9. It is composed of a plurality of integrally formed contacts 10a to 10g. The plurality of contacts 10a to 10g are arranged close to each other to form a contact group. In this embodiment, the plurality of contacts 10a are a group of contacts for the engine control unit 20, the plurality of contacts 10b are a group of contacts for a water temperature detection sensor, and the plurality of contacts 10c are a group of contacts for a camshaft phase detection sensor. A plurality of contacts 10d and 10e are two contact groups for an oxygen amount detection sensor, a plurality of contacts 10f are a group of valves for controlling valve timing, and a plurality of contacts 10g are four ignition coils. Integrated igniter 4
0 constitutes four contact groups.

Four ignition coil integrated igniters 40
The first to sixth connector fitting portions 12a to 12f are provided around the other contacts 10a to 10f, respectively, except for the contact 10g.
12 f is provided integrally with the cylinder head cover 4. The contacts 10a to 10f arranged in the first to sixth connector fitting portions 12a to 12f are exposed so as to protrude from the surface of the cylinder head cover 4. or,
Contact point 10g of four ignition coil integrated igniters 40
Are respectively arranged on the end faces of the ignition coil mounting port 41,
It is exposed from the cylinder head cover 4 along the end face.

Engine control unit 20 which is an electric component
Are bolts 21 (FIG. 2) on the upper surface of the cylinder head cover 4.
Shown). The engine control unit 20 has an engine control circuit unit (not shown) mounted thereon, and is used to input outputs of various sensors and the like and output control signals to the engine control circuit unit (not shown). Are provided at three locations. The two connectors 22 and 23 are provided on the side surface of the engine control unit 20.
And the connector 28 of the harness 27 led to the injector 26 and the like are fitted respectively. Another connector (not shown) is provided on the bottom surface of the engine control unit 20, and this connector (not shown) is fitted to the first connector fitting portion 12 a of the cylinder head cover 4. More specifically, as shown in FIGS. 8A and 8B, the plurality of contacts 10a on the cylinder head cover 4 side have a plate-like shape standing upright, and the engine control unit 20
The plurality of contacts 29 on the side have a holding plate shape having a gap 29a upward from the center of the lower end surface, and the contact 10a on the cylinder head cover 4 side is inserted into the gap 29a of the contact 29 on the engine control unit 20 side. As a result, the two contacts 10a and 29 are electrically connected to each other.

A water temperature detection sensor 30a, both of which are electrical components
And the camshaft phase detection sensor 30b are provided as an integral cover. Then, the connector 31a connected to the water temperature detection sensor 30a and the camshaft phase detection sensor 30
The connector 31b connected to the connector b is fitted to the second and third connector fitting portions 12b and 12c of the cylinder head cover 4, respectively. Connectors 34 and 35 are provided at the ends of the electric wires 33 connected to the two oxygen amount detection sensors 32 as electrical components, respectively. The connectors 34 and 35 are connected to the fourth and fifth terminals of the cylinder head cover 4. They are fitted to the connector fitting parts 12d and 12e, respectively. A connector 37 connected to a valve 36 for controlling valve timing, which is an electrical component, is fitted to the sixth connector fitting portion 12 f of the cylinder head cover 4. The fitting directions of the connectors 31a, 31b, 37 and the second, third, and sixth connector fitting portions 12b, 12c, 12f are substantially the same as the engine vibration direction V.

As shown in detail in FIG. 9, the ignition coil integrated type igniter 40, which is an electrical component, is fixed to the cylinder head cover 4 by bolts 42 while being inserted into the ignition coil mounting opening 41. A plurality of contacts 43 for receiving the supply of the ignition current are provided on the side surface of the ignition coil integrated igniter 40, and the plurality of contacts 43 are in contact with the respective contacts 10 g of the cylinder head cover 4.

In the engine provided with the engine-integrated control device A of the present invention, the branch circuit 9
And the plurality of contacts 10a to 10g are integrally formed by using the terminal and the terminal, so that a step of connecting the branch circuit portion and the plurality of contacts as in the conventional example is not required. Therefore, the bus bar circuit body 8 formed by, for example, press molding can be formed by integrally forming the bus bar circuit body 8 with the cylinder head cover 4, and the manufacturing can be easily performed at a low cost. Further, since the busbar circuit body 8 has rigidity as a structure, dimensional accuracy can be easily obtained at the time of buried manufacturing. Further, the bus bar circuit body 8 does not cause inconvenience such as deformation at the manufacturing temperature (150 ° C. for FRP resin to 300 ° C. for nylon resin) at the time of burying, so that the degree of freedom in selecting the material of the cylinder head cover 4 is wide. Become.

In the above embodiment, the engine control unit 20, which is an electrical component, the water temperature detection sensor 30a, the camshaft phase detection unit 30b, the oxygen amount detection sensor 32,
Continuous valve timing controller 36
(Not shown), 31a, 31b,
34, 35, 37 are fitted, and a plurality of contacts 10a to 10f
First to sixth connector fitting portions 12a to 12f
Are provided on the cylinder head cover 4, so that connectors (not shown), 31a, 31b, 3
If the components 4, 35, 37 are fitted to the connector fitting portions 12a to 12f of the cylinder head cover 4, electrical components can be connected, so that electrical components including the engine control unit 20 can be easily connected. Further, if the ignition coil integrated type igniter 40 is attached to the ignition coil mounting opening 41, the electrical connection to the ignition coil integrated type igniter 40 is completed, so that the mounting operation of the ignition coil integrated type igniter 40 is easy.

In the above embodiment, the connectors 31a, 31b, 37 connected to the water temperature detection sensor 30a, the camshaft phase detection sensor 30b, and the valve 36 for controlling the valve timing, and the second, third, and sixth components are electrical components. The fitting direction with the connector fitting portions 12b, 12c, 12f is
Since the direction of vibration is substantially the same as the direction of vibration V of the engine, the vibrations of the engine cause vibrations in the directions of sliding on each other (not shown), 10b, 10c, and 10f. In addition, damage to the contacts (not shown), 10b, 10c, and 10f due to engine vibration can be prevented.

In the above embodiment, since the main body of the apparatus is the cylinder head cover 4 for closing the upper opening of the engine, there is no need to provide a member for providing the bus bar circuit body 8 separately from the cylinder head cover 4. Will be reduced.

FIGS. 10 to 12 show another embodiment of the engine to which the engine-integrated control device according to the present invention is applied, and FIG. 10 is an exploded perspective view of the engine clearly shown through a circuit block portion of a cylinder head cover. FIG. 11 is a perspective view of the engine, FIG. 12A is a longitudinal sectional view of a cylinder head cover, and FIG. 12B is a circuit diagram of an ignition coil circuit.

As shown in FIGS. 10 to 12A, an engine 50 is provided with an engine body 51 formed of a heat-resistant conductive material and an upper surface of the engine body 51. And a cylinder head cover 52, which is the main body of the apparatus. An intake pipe (not shown) and an exhaust pipe 53 are connected to the engine body 51, and air and fuel sucked from the intake pipe (not shown) are supplied to a cylinder chamber (not shown) in the engine body 51. Then, exhaust gas generated by combustion in a cylinder chamber (not shown) is discharged from an exhaust pipe 53. A bolt fastening portion 54 is provided at an appropriate position on the outer periphery of the engine body 51.

The cylinder head cover 52 is mounted on the engine 5
The head cover main body 55 is made of a heat-resistant material, and has a circuit block 56 fixed to the upper surface side of the head cover main body 55. A bolt insertion portion 57 is provided on the outer periphery of the head cover body 55.
The bolt 58 inserted into the bolt insertion portion 57 is screwed into the bolt fastening portion 54 of the engine body 51, and the head cover body 55 is fixed to the engine body 51.

As shown in FIG. 12 (a), the head cover main body 55 has a baffle plate 59 and an upper cover portion 6 which is arranged at a predetermined interval on the baffle plate 59.
0, and a cooling passage 61 is formed in the internal space of the two-layer structure. Upper cover part 6
In the center of the upper surface of the coil 0, four coil insertion holes 62 are opened, and an ignition plug-integrated igniter 63 described below is inserted into the coil insertion holes 62. A bolt insertion hole 64 is formed near each coil insertion hole 62.
Also, on the upper surface 60a of the upper cover portion 60 and on one side from the center where the coil insertion hole 62 is formed, the upper surface 60a
A lower step surface 60b which is lower by one step is formed, and the circuit block portion 56 is arranged on the lower step surface 60b. The low step surface 60b is formed as a flat surface, and substantially the entire bottom surface of the circuit block portion 56 is fixed in close contact. The depth of the low step surface 60b is set to substantially the same height as the circuit block portion 56. Therefore, the upper surface of the circuit block portion 56 and the upper surface 60a of the upper cover portion 60 have substantially the same height.

The circuit block portion 56 includes an insulating resin portion 65 formed of a heat-resistant insulating resin, and an insulating resin portion 65.
And a bus bar circuit body 66 buried therein. The bus bar circuit body 66 is made of a rigid bus bar by press forming, and is integrally formed using a branch circuit portion 66a which is a wiring portion of the engine control circuit and a terminal portion forming the branch circuit portion 66a. Multiple contacts 6
6b. In the circuit block section 56, a connector 67a for energizing the bus bar circuit body 66,
A large number of connectors 67b, 68a to 68g are provided, and each of the connectors 67a, 67b, 68a to 68g uses a plurality of contacts 66b formed using the terminals of the branch circuit section 66a as described above, and an insulating resin. And a connector fitting portion (particularly not denoted by a reference numeral) formed as described above.

4 projecting from the upper surface of the circuit block 56
Connectors 67a are provided with an ignition plug integrated igniter 6
The ignition coil connector 67a is connected to the third connector 69. Each ignition coil connector 67a is arranged at a position close to each coil insertion hole 62, and the vertical direction is set to the connection direction. Another connector 67b protruding from the upper surface of the circuit block portion 56 is an electrical component connector 67b connected to the connector 71 of the engine control unit 70, which is an electrical component arranged on the outer periphery of the engine. The component connector 67b is disposed at a position separated from the secondary circuit 86 of the ignition plug integrated igniter 63. The engine control unit 70 is provided with a vehicle harness connector 74 connected to the connector 73 of the vehicle harness 72.

All the connectors 68a to 68g protruding from the side surface of the circuit block portion 56 are also electrical component connectors 68a to 68g connected to electrical component connectors 75a to 75g arranged on the outer periphery of the engine. The electrical component connectors 68a to 68g are also arranged at positions separated from the secondary circuit 86 of the ignition plug integrated igniter 63.

The connection partner of each of the electrical component connectors 68a to 68g will be specifically described. To the two electrical component connectors 68a, a connector 75a for connection to an oxygen content detection sensor 76, which is an electrical component, is connected. A water temperature detection sensor (not shown), which is an electrical component, is provided on the electrical component connector 68b.
The connector 75b is connected to a camshaft phase detection sensor (not shown). Electrical component connector 68
To c, a connector 75c for connection to a position sensor (not shown) and a knock sensor (not shown), which are electrical components, is connected. Each of the four electrical component connectors 68d is connected to a connector 75d for connection to an injector (not shown) that is an electrical component. To the electrical component connector 68e, a connector 75e for connection to an electronic control throttle solenoid (not shown), which is an electrical component, is connected. To the electrical component connector 68f, a connector 75f for connection to an evaporation solenoid (not shown), which is an electrical component, is connected. The electrical component connector 68g is connected to a connector 75g connected to the continuous valve timing controller 77, which is an electrical component.

The circuit block section 56 is provided with a ground terminal 78 using the terminal of the bus bar of the bus bar circuit body 66, and the ground terminal 78 is exposed outside the resin. The ground terminal 78 is provided near the ignition plug integrated igniter 63 mounted on the head cover main body 55. The ground terminal 78 has a bolt insertion hole 78a.
The circuit block portion 56 and the head cover main body 55 are connected to each other by screwing the bolts 79 inserted into the bolt insertion holes 78a and the bolt insertion portions 57 of the head cover main body 55 into the bolt mounting portions 54 of the engine main body 51. It is fastened to the main body 51 together. A collar 80 made of a conductive material is inserted into the bolt insertion portion 57 of the head cover main body 55, and the collar 80 is
8 and the engine body 51 are electrically connected. That is, the busbar branch circuit body 66 is grounded to the engine main body 51 through the ground terminal 78 via the collar 80.

Although not shown, the circuit block portion 56 is provided with a bolt insertion portion at an appropriate position, and together with the bolt (not shown) inserted into the bolt insertion portion (not shown), the circuit block portion is formed by the bolt 79. 56 is fixed to the head cover main body 55. In other words, the bolt 79 that fastens the ground terminal 78 also serves as a means for fastening the circuit block portion 56 to the head cover main body 55.

The ignition plug integrated igniter 63 has an ignition plug 81 mounted therein and an ignition coil circuit 82 for generating an ignition voltage for the ignition plug 81 incorporated therein. As shown in FIG. 12 (b), the ignition coil circuit 82 generates a primary coil 83 based on a timing signal.
The primary side circuit 84 through which a primary current flows, and the high voltage (10 KV to 3 K) applied to the secondary coil 85 by the flow of the primary current.
0 KV). Each ignition plug integrated igniter 63 is provided with each coil insertion hole 62.
Is attached to the head cover main body 55 by bolts 87 in a state of being inserted. A primary circuit 84 and a secondary circuit 86 are built in the positions clearly shown in FIG. 12A, and the ignition plug integrated igniter 63 is such that the secondary circuit 86 is farther from the circuit block unit 56. It is mounted in the correct orientation.

Each of the ignition plug integrated igniters 63 is provided with a connector 69 for inputting a power supply voltage of the ignition coil circuit 82 and a timing signal, and the connector 69 has a vertical connection direction. When the ignition plug-integrated igniter 63 is inserted into the coil insertion hole 62, the connector 69 of the ignition plug-integrated igniter 63 is connected to the relay terminal 88 (FIG.
(Shown in (a)).

As described above, the engine-integrated control device B of the present invention
In the engine 50 provided with the same, the branch circuit portion 66a and the plurality of contacts 66b are integrally formed by using the terminals thereof by the bus bar branch circuit body 66 as in the above-described embodiment, so that the There is no need for a step of connecting the branch circuit section and the plurality of contacts. Therefore, for example, the bus bar circuit body formed by press molding is
6, and can be manufactured easily and at low cost.

In this embodiment, the cylinder head cover 52 has a head cover main body 55 having a lower step surface 60b one step lower than the upper surface 60a on one side of the upper surface 60a, and is fixed on the low step surface 60b of the head cover main body 55. Since the circuit block 56 is assembled with the circuit block portion 56, there is an advantage that the molding process is easier as compared with the embodiment in which the bus bar circuit body 8 is embedded in the cylinder head cover 4 as in the above-described embodiment.

In this embodiment, since the circuit block 56 is fixed to one side of the center of the head cover main body 55, the electrical component connector 67 of the circuit block 56 is fixed.
b, 68a to 68g are concentrated on one side of the cylinder head cover 52, and there is no need to arrange the wire harness in a complicated manner so as to surround the engine 50. Will be improved. By simplifying the wiring harness wiring work, it contributes to the elimination of disconnection and poor contact during the wiring work.

In this embodiment, since the circuit block portion 56 can be prevented from protruding from the upper surface 60a of the upper cover portion 60 of the head cover main body 55, the engine 50
Is easily accommodated in the engine room. Further, since the circuit block portion 56 can be disposed on the head cover main body 55 in close contact with almost the entire bottom surface, the head cover main body 55 is efficiently cooled. There is also an effect that inconvenience such as resin cracking or resin deformation of the portion 65 can be prevented.

In this embodiment, the ground terminal 78 is provided near the ignition plug integrated igniter 63 mounted on the head cover main body 55. The effect of noise on the ignition coil circuit 82 of the plug-integrated igniter 63 can be effectively prevented.

In this embodiment, the circuit block 5
6 is fixed to the head cover main body 55 by bolts 79 (not shown), but may be fixed to the head cover main body 55 by a boltless structure such as fitting, welding, or pasting.

In this embodiment, the ignition plug-integrated igniter 63 is fixed to the head cover main body 55 by bolts 87, but is fixed to the head cover main body 55 by a boltless structure such as fitting, welding, and pasting. It may be.

[0048]

As described above, according to the first aspect of the present invention, there is provided an engine-integrated control device which is connected to an electric component and has a branch circuit, wherein the control device is made of a heat-resistant insulating material. Since the main body and the bus bar circuit body embedded in the device main body and formed with a branch circuit part and a plurality of contacts connected to the electrical components are formed integrally with the terminal, the bus bar circuit body forms the branch circuit part. Since the plurality of contacts are integrally formed using the terminal, a step of connecting the branch circuit section and the plurality of contacts unlike the conventional example is not required. Therefore, for example, the bus bar circuit body formed by press molding can be formed by integrally forming the bus bar circuit body with the apparatus main body, so that it is easy to manufacture and can be manufactured at low cost.

According to a second aspect of the present invention, in the engine-integrated control device according to the first aspect, a connector fitting portion in which a connector connected to an electrical component is fitted and a plurality of contacts are arranged. Since it is provided in the device main body, in addition to the effect of the invention of claim 1, since the electrical component can be connected by fitting the connector on the electrical component side into the connector fitting portion of the device main body,
Connection of electrical components is easy.

According to a third aspect of the present invention, in the engine-integrated control device according to the second aspect, the fitting direction between the connector connected to the electrical component and the connector fitting portion is different from the vibration direction of the engine. Since the directions are substantially the same, in addition to the effect of the invention of claim 2, vibrations of the engine cause vibrations in a direction of sliding on both contacts due to vibration of the engine. Can be prevented.

According to a fourth aspect of the present invention, in the engine-integrated control device according to the first to third aspects, the device main body is a cylinder head cover for closing an upper opening of the engine. In addition to the effects of the first to third aspects of the present invention, there is no need to provide a member for providing a bus bar circuit body separately from the cylinder head cover, so that the number of parts can be reduced.

According to a fifth aspect of the present invention, in the engine-integrated control device according to the fourth aspect, the cylinder head cover includes a head cover main body having a lower step surface one step lower than the upper surface on one side of the upper surface, and the head cover. A circuit block section fixed on the low step surface of the main body, wherein the bus bar circuit body is embedded in the circuit block section.
In addition to the effects of the invention, the connector of the circuit block portion is concentrated on one side of the cylinder head cover, and there is no need to arrange the wire harness in a complicated manner so as to surround the engine, thereby simplifying the wiring harness routing work around the engine. , Which improves the assemblability. By simplifying the wiring harness wiring work, it contributes to the elimination of disconnection and poor contact during the wiring work.

[Brief description of the drawings]

FIG. 1 is a perspective view of an engine according to an embodiment of the present invention, viewed from an intake side.

FIG. 2 is a perspective view of the engine, showing one embodiment of the present invention, viewed from the exhaust side.

FIG. 3 is a perspective view of the cylinder head cover viewed from the intake side and clearly showing a bus bar circuit body, showing the embodiment of the present invention.

FIG. 4 is a perspective view showing the cylinder head cover viewed from the exhaust side and clearly showing a bus bar circuit body in an embodiment of the present invention.

FIG. 5 shows one embodiment of the present invention, and is a partially cutaway sectional view of a cylinder head cover viewed from an exhaust side.

FIG. 6 shows one embodiment of the present invention, and is a partially cutaway sectional view of a cylinder head cover viewed from an exhaust side.

FIG. 7 is a partially cutaway cross-sectional view of the cylinder head cover as viewed from the exhaust side, showing one embodiment of the present invention.

8A and 8B show an embodiment of the present invention, wherein FIG. 8A is a perspective view showing a state before contact between a contact on the engine control unit side and a contact on the cylinder head cover side, and FIG. FIG. 3 is a perspective view showing a contact state between the contact and a contact on a cylinder head cover side.

FIG. 9 shows one embodiment of the present invention, and is a cross-sectional view showing a mounted state of an ignition coil integrated igniter.

FIG. 10 is an exploded perspective view of an engine to which another embodiment of the present invention is applied, in which the engine-integrated control device according to the present invention is applied, in which a circuit block portion of a cylinder head cover is clearly shown through; is there.

FIG. 11 is a perspective view of the engine, showing another embodiment of the present invention.

FIG. 12 shows another embodiment of the present invention, in which (a) is a longitudinal sectional view of a cylinder head cover, and (b) is a circuit diagram of an ignition coil circuit.

FIG. 13 is a perspective view of a cylinder head cover to which a conventional engine-integrated control device is applied.

FIG. 14 is a sectional view taken along line AA of FIG.

[Explanation of symbols]

A, B Engine integrated control device 4 Cylinder head cover (device main body) 8 Busbar circuit body 9 Branch circuit portion 10a to 10g Contact point 12a to 12f Connector fitting portion 20 Engine control unit (electrical component) 30a Water temperature detection sensor (electrical component) 30b Camshaft phase detection sensor (electric parts) 31a, 31b, 34, 35, 37 Connector 32 Oxygen amount detection sensor (electric parts) 36 Continuous valve timing controller (electric parts) 40 Ignition coil integrated igniter (electric parts) 52 Cylinder head cover 55 Head cover main body 56 Circuit block section 60a Upper surface of head cover main body 60b Low step surface 63 Ignition coil integrated igniter (electrical component) 66 Busbar circuit body 66a Branch circuit section 66b Contact 70 Engine control unit Electrical components) 76 oxygen amount detecting sensor (electric component) 77 Kontenyu Ass valve timing controller (electrical components)

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Keizo Nishitani 1500 Onjuku, Susono-shi, Shizuoka Yazaki Sogyo Co., Ltd. F-term (reference) 3G019 AA05 KA23 KC10 KD07 3G024 AA72 FA14 3G301 JA00

Claims (5)

[Claims] 1. An engine-integrated control device which is connected to an electric component mounted on an outer periphery of an engine and has a branch circuit portion, comprising: a device main body made of a heat-resistant insulating material; An engine-integrated control device, comprising: a busbar circuit body in which the branch circuit portion is formed and a plurality of contacts connected to the electrical component are integrally formed in a terminal. 2. The engine-integrated control device according to claim 1, wherein a connector connected to the electrical component is fitted, and a connector fitting portion in which the plurality of contacts are arranged is provided in the device main body. An engine-integrated control device characterized in that: 3. The engine-integrated control device according to claim 2, wherein a fitting direction of the connector connected to the electrical component and the connector fitting portion is substantially the same as a direction of vibration of the engine. An engine-integrated control device, characterized in that: 4. The engine-integrated control device according to claim 1, wherein the device body is a cylinder head cover that closes an upper opening of the engine. . 5. The engine-integrated control device according to claim 4, wherein the cylinder head cover has a head cover main body having a lower step surface one step lower than the upper surface on one side of the upper surface, and a cylinder having a low step surface on the head cover main body. A fixed circuit block section, wherein the bus bar circuit body is embedded in the circuit block section.