JP4237105B2 - Connector-integrated intake system module - Google Patents

Description

  The present invention relates to an intake system module used for an engine.

  Conventionally, an ignition coil assembly device has been used to connect and support a plurality of ignition coils to each ignition plug attached to a spark plug hole on the engine side. The ignition coil assembly device includes a common electrically insulating base member for removably supporting each ignition coil at a position corresponding to each ignition plug hole on the engine side. The base member is fixed to the engine side by mounting bolts. In addition, in order to make electrical connection with the ignition coil, an internal wiring is provided in the base member so as to be embedded, and a terminal is provided at a position corresponding to each ignition coil (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 2003-322076 (page 1-4, FIG. 1-7)

  In the conventional ignition coil assembly apparatus, a base member having an internal wiring is required as an individual part in order to form connection support portions for a plurality of ignition coils, and the mounting workability to the engine is poor due to this base member. The cost becomes high. Further, there is a problem that a space for installing the base member, a mounting bolt, and the like are required.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a connector-integrated intake system module that can connect a plurality of ignition coils to an external circuit without using a base member, and is easy to attach to an engine.

The connector-integrated intake system module according to the present invention has a connector portion directly connected to the ignition coil and one end connected to the connector portion in order to connect a plurality of ignition coils mounted on the engine body to an external circuit. The other end includes a connector conductor that can be connected to an external circuit, and an intake system device installed on the engine body, and the connector portion is integrated with the device housing of the intake system device and installed on the engine body. The apparatus further includes a bottom wall of the device housing, and an elastic body layer that is fixed to the connector portion provided on the bottom wall of the device housing and faces the ignition coil provided on the upper surface of the engine body .

  According to this invention, since the connector part for connecting with the ignition coil is integrated with the equipment housing of the intake system equipment, the number of parts can be reduced and the mounting workability can be improved.

Embodiment 1 FIG.
1 and 2 show an embodiment in which the connector-integrated intake system module of the present invention is applied to an air cleaner. FIG. 1 is an exploded perspective view of the connector-integrated intake system module, and FIG. 2 is a cross-sectional view of the connector-integrated intake system module provided on the engine body and connected to the ignition coil. Although an air cleaner has been described as an example here, the present invention may be applied to an intake system device other than an air cleaner such as a resonator.

  1 and 2, a connector-integrated intake system module 2 is disposed on the engine body 1. An air cleaner 3 that is an intake system device of the connector-integrated intake system module 2 includes a device housing 6 composed of an air cleaner body 4 and a cover 5, and an air cleaner element 7 housed in the device housing 6. The air cleaner 3 is fixed on the engine body 1 using a fixing flange 8 and a bolt 9 provided on the air cleaner body 4.

  A plug hole 10 that houses a spark plug is provided in the upper part of the engine body 1. There are four plug holes 10 in this example. An ignition plug 11 is inserted and fixed in each plug hole 10, and an ignition coil 12 is also inserted and its inner end is connected to the ignition plug 11. 14 protrudes from the top surface of the engine body 1.

  In FIG. 2, the device housing 6 of the air cleaner 3 is formed of an insulating resin, and includes a bottom wall 15 disposed on the top surface of the engine body 1 and a side wall 16 rising from the periphery of the bottom wall 15. Yes. The bottom wall 15 has a cup-shaped recess 17 at a position corresponding to the ignition coil 12 attached to the engine body 1. These recesses 17 are closed cylindrical wall portions that are recessed toward the inside so as to closely receive the terminals 14 of the ignition coil 12, which is a portion protruding from the engine body 1 of the ignition coil 12. The number of recesses 17 corresponds to the number of ignition coils 12.

  A terminal 18 protrudes from the bottom wall of each recess 17 in the bottom wall 15, and the inner end of the terminal 18 is embedded and supported in the recess bottom wall by insert molding or the like. One end of an integrated connector conductor 19 is connected to the inner end of the terminal 18 by being embedded in the bottom wall 15 by insert molding or the like, and the other end of the connector conductor 19 is the end surface of the bottom wall 15. That is, the connector 20 is connected to the tip end of the side wall 16 by being pulled out. In this way, the connector portion 21 that is directly connected to the terminal 14 of the ignition coil 12 of the engine body 1 is constituted by the recess 17 provided in the bottom wall 15 of the equipment housing 6 and the terminal 18 provided in the recess 17. Has been. The connector conductor 19 is connected to the connector portion 21 at one end, and can be connected to an external circuit (not shown) via the external connector 20 at the other end. In this example, the connector portion 21 and the connector conductor 19 are integral plate-like or rod-like conductors that are continuous with each other.

  Thus, the connector-integrated intake system module 2 of the present invention includes a connector portion 21 that is directly connected to the ignition coil 12 in order to connect the plurality of ignition coils 12 mounted on the engine body 1 to an external circuit, A connector conductor 19 which is connected to the connector portion 21 at one end and can be connected to an external circuit at the other end, and an air cleaner 3 which is an intake system device having a device housing 6 installed on the engine body 1; The part 21 is integrated with the device housing 6 of the air cleaner 3. The connector conductor 19 can also be fixedly wired to the device housing 6 with another appropriate metal fitting, adhesive, adhesive tape or the like without being embedded in the device housing 6.

  In the connector-integrated intake system module 2 having such a configuration, the connector portion 21 that is directly connected to the ignition coil 12 is integrated with the device housing 6 of the air cleaner 3 installed on the engine body 1 and is conventionally required. Since the base member which is an independent part is unnecessary, the electrical connection between the ignition coil 12 and the connector portion 21 in a state where the ignition coil 12 is attached to each ignition plug attached to the engine body 1. Can be performed at the same time as the air cleaner 3 is mounted. Further, by fixing the air cleaner 3 on the engine body 1 with a bolt, the ignition coil 12 can be mechanically supported by the connector portion 21 at the same time.

  Further, since the connector conductor 19 is formed integrally with the bottom wall 15 of the device housing 6 of the air cleaner 3, it is necessary to route the conductor between the engine body 1 and the air cleaner 3, and to secure a space for the conductor. The structure is compact and the installation work is easy.

Embodiment 2. FIG.
FIG. 3 shows a connector-integrated intake system module according to Embodiment 2 of the present invention. In FIG. 3, the other end of the connector conductor 19 integrally embedded in the bottom wall 15 of the air cleaner 3 is connected to an integrated connector 22 in which a plurality of external connectors are aggregated to form an integrated assembly. The integrated connector 22 may be connected to the outside of the connector conductor 19 drawn from the device housing 6 as shown in FIG. 2, but as shown in FIG. 3, the end of the bottom wall 15 of the device housing 6, that is, It is embedded in the lower end portion of the side wall 16 by integral molding such as insert molding. In the illustrated example, the integrated connector 22 includes a slit-shaped recess 23 provided on the side wall 16 and a terminal 24 protruding into the recess 23. Other configurations are the same as those of the embodiment shown in FIGS.

  Thus, since the integrated connector 22 which is an external connector is integrated with the equipment housing 6 of the air cleaner 3, the connection with the wiring from the control unit (not shown) of the engine body 1 can be performed in one operation.

Embodiment 3 FIG.
FIG. 4 shows a connector-integrated intake system module according to Embodiment 3 of the present invention. In FIG. 4, there is rubber between the bottom wall 15 of the device housing 6 of the air cleaner 3 and the top surface of the engine body 1 and between the cup-shaped recess 17 of the device housing 6 and the ignition coil 12 on the engine body 1 side. Alternatively, an elastic body layer 25 of synthetic resin is provided. In this embodiment, the elastic body layer 25 is fixed to the bottom wall 15 of the device housing 6 and the inner surface of the recess 17 with an adhesive or the like. In other words, the elastic body layer 25 is fixed to the device housing 6 and the connector portion 21, and comes into contact with the engine body 1 and the ignition coil 12 so as to face each other when mounted on the engine body 1.

  Since the elastic body layer 25 is thus provided in the device housing 6 of the air cleaner 3, the pitch of the connector portion 21 is slightly deviated from the mounting pitch of the ignition coil 12 mounted on the ignition plug (not shown) of the engine body 1. Even so, such a shift in pitch is effectively absorbed by the elastic deformation of the elastic layer 25, and the ignition coil 12 can be reliably held. In addition, the vibration of the concave portion 17 of the connector portion 21 due to vibration during actual use can be suppressed, and the reliability of electrical connection of the connector portion 21 is improved.

It is a disassembled perspective view which shows the connector integrated intake system module which shows Embodiment 1 of this invention with an engine main body. It is sectional drawing of the connector integrated intake system module in the state connected with the ignition coil which shows Embodiment 1 of this invention. It is sectional drawing of the connector integrated intake system module which provided integrally the integrated connector which shows Embodiment 2 of this invention in the apparatus housing of an apparatus. It is sectional drawing of the connector integrated intake system module which provided the elastic-body layer which shows Embodiment 3 of this invention in the bottom wall of the apparatus housing.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Engine main body, 3 Air cleaner, 6 Apparatus housing, 12 Ignition coil, 19 Connector conductor, 21 Connector part, 22 Integrated connector, 25 Elastic body layer.

Claims (3)

A connector portion directly connected to the ignition coil in order to connect a plurality of ignition coils mounted on the engine body to an external circuit;
A connector conductor which is connected to the connector part at one end and can be connected to an external circuit at the other end;
An intake system device having a device housing installed on the engine body,
The connector part is integrated with the device housing of the intake system device ,
The apparatus further includes a bottom wall of the device housing, and an elastic body layer fixed to the connector portion provided on the bottom wall of the device housing and facing the ignition coil provided on the upper surface of the engine body and the engine body. A connector-integrated intake system module.   The connector-integrated intake system module according to claim 1, wherein the connector conductor is integrated with the device housing.   The connector according to claim 1, wherein the other end of the connector conductor includes an integrated connector that is an assembly of a plurality of connectors, and the integrated connector is integrated with the device housing. Integrated intake system module.

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