JP3119628U - Static eliminator for engine - Google Patents

Abstract

An object of the present invention is to enable easy attachment to the most effective part of an ignition electrical system of an engine without requiring work such as remodeling for every vehicle type.
SOLUTION: A flexible cable body 12 and 14 in which a conductive metal core wire 16 is coated over an entire length with an insulating coating 17, and is provided on one end side of the cable body and is detachable from a plug cord 3. And a plug cord coupling portion 11 for crimping the first end portion of the metal core wire to the outer peripheral portion of the cable body, and a plug cord coupling portion 11 provided on the other end side of the cable body and detachably coupled to the vehicle-mounted ground terminals 4A and 32. And a ground terminal coupling portion 13 for connecting the second end of the metal core wire.
[Selection] Figure 3

Description

  TECHNICAL FIELD The present invention relates to an engine static eliminator that is attached to an automobile or marine engine (hereinafter simply referred to as an engine) and removes charged static electricity to achieve an efficient flow of current in an ignition electrical system. .

  In automobiles, a battery and alternator are used as power sources, and a predetermined voltage current is supplied to various electrical systems such as an engine ignition electrical system, an electronic control electrical system, a light electrical system such as a headlight, and a console electrical system. Is done. Generally, in an automobile, each electrical system is configured by connecting the negative side to the vehicle body as a ground, thereby simplifying wiring and the like.

  By the way, as is well known, an engine supplies a spark starting current of high voltage to an ignition plug in an ignition electrical system to generate a spark, and burns a compressed gas mixture filled in the cylinder at a stroke to drive a piston. The ignition electrical system is composed of, for example, a battery, an electronic control unit (ECU), a coil, a distributor, and an ignition plug, and each spark plug is supplied with a spark starting current obtained by boosting the battery voltage to 10,000 volts or more by the coil. To distribute. In the ignition electrical system, the distributor and each spark plug are connected by plug cords.

  In the ignition electrical system, in addition to the plug cord system described above, a so-called direct ignition system is also employed in which a direct coil having a spark plug connected to each cylinder is provided and each direct coil is directly controlled by a control signal from the ECU. In the direct ignition system, the voltage boosted by each direct coil is supplied directly to the spark plug, reducing the voltage loss at the midpoint compared to the conventional system and improving the efficiency by eliminating the potential difference between the spark plugs. It has the characteristic of being able to be made.

  By the way, in an automobile, there is a problem that a high resistance portion is partially generated due to partial distortion, rust, dirt, or the like of the vehicle body, so that the current flow in each electric system is deteriorated and the performance of the electric component is deteriorated. there were. Also, in automobiles, a large amount of static electricity that inhibits the flow of current is generated around the engine due to the operation of the piston driven at high speed in the cylinder. The static electricity is surely removed by the characteristics of the vehicle body described above. There was a problem that I couldn't. In automobiles, reliable ground wiring is ensured in each electrical system, thereby eliminating the effects of static electricity and exhibiting the characteristics of electrical components.

  In Patent Document 1, a reliable ground wiring is configured by connecting an ignition electrical system of an engine and a negative terminal of a battery with a ground wire composed of a plurality of thin wires to solve the above-described problem. An illustrated earthing system is disclosed. In Patent Document 2, an intermediate portion of a ground wire having one end connected to a negative terminal of a battery is electrically connected to an engine ground point, and then the other end of the ground wire is installed on the vehicle body to charge the engine. An engine grounding system that reliably removes static electricity is disclosed. In Patent Document 3, a cable in which a coil is connected in series to a capacitor and a series circuit including an amplifier circuit and a phase inversion circuit is connected to the capacitor in parallel with the coil is provided between the engine body and the chassis frame. An engine grounding structure that removes high-frequency noise generated inside the engine by connecting is disclosed.

JP 2004-316477 A International Publication WO2004 / 007952 Pamphlet Japanese Patent Laid-Open No. 2001-3844

  In automobiles, as described above, the plug cord system and the direct ignition system are provided as the ignition electrical system. However, in each system, the position where the static electricity that obstructs the characteristics of each ignition plug is efficiently removed is also different. . In a plug cord type ignition electrical system, a reverse induction current is generated when a high voltage spark starting current flows through the plug cord, and the reverse induced current inhibits the flow of the spark starting current, thereby deteriorating characteristics. In the plug cord type ignition electrical system, as the thickness of the insulating coating increases as the plug cord responds to higher voltages, a large amount of static electricity is charged on the insulating coating. Therefore, in the plug cord type ignition electrical system, it is extremely important to prevent the occurrence of reverse induction current and to eliminate static electricity from the plug cord.

  Further, in the ignition system of the direct ignition system, since a high voltage current is not supplied to the cable connecting the ECU and each direct coil, it is not particularly necessary to take measures against static elimination on the cable. On the other hand, in the ignition system of the direct ignition system, characteristics are deteriorated because a weak current is charged on the outer iron core of each direct coil and leaks even slightly. In the ignition system of the direct ignition system, it is important to prevent the characteristic deterioration by discharging the current charged in the iron core of each direct coil and to eliminate the potential difference between the direct coils.

  Each of the technologies disclosed in each of the above-mentioned patent documents ensures a reliable ground wiring of the ignition electrical system, thereby improving the efficiency of the electrical component by improving the flow of the spark starting current. At the same time, there is an effect that fuel efficiency is improved. However, the earthing system disclosed in Patent Document 1 is expensive because it uses a ground wire composed of a complex wire formed of a plurality of thin wires, and the existing ground wire is removed and used, so that work at the factory is not possible. There is a problem that it is necessary. Also in the ground system disclosed in Patent Document 2, a factory work is required to connect the ground wire to the ground point of the engine provided at a different position depending on the vehicle type. Further, the grounding structure of the engine of Patent Document 3 is exclusively for the purpose of removing high-frequency noise, and the basic structure itself for connecting the engine body and the chassis frame is the same as the conventional ground wiring.

  In each of the above-mentioned patent documents, a static neutralization technique for static electricity charged on a general engine body is disclosed, but there is no positive description about countermeasures for static elimination of static electricity charged in an ignition electrical system. That is, in each patent document, there is no disclosure about a specific response regarding the necessity of the ground wiring structure in the ignition electrical system in the above-described plug cord system and direct ignition system. In automobiles, the ground wiring structure in the ignition electrical system is different for each vehicle type, and an engine static eliminator that can be attached to any vehicle type is desired.

  Therefore, the present invention provides a general-purpose engine static eliminator that can be easily attached to the most effective part of the ignition electrical system of an engine without requiring modification work for any vehicle type. It was proposed for the purpose.

  An engine static eliminator according to the present invention that achieves the above-described object is provided with a flexible cable body in which a conductive metal core wire is coated over the entire length with an insulating coating, and is provided on one end side of the cable body. A plug cord coupling portion that is detachably coupled to the plug cord and crimps the first end portion of the metal core wire to the outer peripheral portion thereof, and is provided on the other end side of the cable body and is detachable from the in-vehicle earth terminal And a ground terminal coupling portion for coupling the second end portion of the metal core wire.

  In the engine static eliminator, the plug cord coupling portion is coupled to the outer peripheral portion of the plug cord and the ground terminal coupling portion is coupled to the vehicle-mounted ground terminal, thereby removing static electricity charged in the plug cord. The engine static eliminator eliminates the reverse induction current and static electricity from the plug cord so that the spark starting current flows efficiently, improving the fuel consumption by complete combustion of the compressed gas mixture in the cylinder, The engine output is improved, the torque is improved and leveled in the middle / low speed range, the accelerator response is improved, the engine startability is improved, and the idling is stabilized.

  Further, the engine static eliminator is provided with a plurality of plug cord coupling portions that are attached to and detached from a plurality of plug cords corresponding to the number of cylinders, and a plurality of cables drawn from the plug cord coupling portions. The body is electrically connected by a connector and bound to at least one cable body, and a ground terminal coupling portion is provided at the end of the bundled cable body. According to the engine static eliminator, it can be easily routed between a plurality of plug cords and at least one grounding terminal without obstructing, improving workability and safe wiring. To be done.

  Further, in the engine static eliminator, the ground terminal coupling portion is coupled to the negative terminal of the battery constituting the vehicle-mounted ground terminal and / or the ground connection portion provided on the vehicle body. According to the engine static eliminator, workability can be improved by selecting the negative terminal of the battery and the ground connection part of the vehicle body and coupling the ground terminal connection part according to the specifications of the vehicle type and the like. It is possible to perform reliable ground wiring.

  An engine static eliminator according to the present invention that achieves the above-described object is provided with a flexible cable body in which a conductive metal core wire is coated over the entire length with an insulating coating, and is provided on one end side of the cable body. A direct coil coupling portion that is detachably coupled to the iron core of the direct coil provided for each cylinder and crimps the first end of the metal core wire to the outer periphery thereof, and is provided on the other end side of the cable body. And a ground terminal coupling portion that is detachably coupled to the ground terminal and connects the second end of the metal core wire.

  In the engine static eliminator, the direct coil coupling part is coupled to the outer iron core of the direct coil protruding from the engine body, and the ground terminal coupling part is coupled to the in-vehicle ground terminal, so that the direct coil iron Removes static electricity from the core. The engine static eliminator eliminates static electricity from the direct coil so that a stable and powerful spark is generated from the spark plug, improving the fuel consumption by complete combustion of the compressed gas mixture in the cylinder, Improve output, improve and level torque in the middle / low speed range, improve accelerator response, improve engine startability and stabilize idling.

  The engine static eliminator has a plurality of direct coil coupling portions that are attached to and detached from the plurality of direct coils, and a plurality of cable bodies drawn from the direct coil coupling portions are electrically connected by connectors. Are connected to each other and bound to at least one cable body, and an end portion of the bundled cable body is provided with a ground terminal coupling portion. According to the engine static eliminator, it can be easily routed between a plurality of direct coils and at least one grounding terminal without obstructing, improving workability and safe wiring. To be done.

  Further, in the engine static eliminator, the ground terminal coupling portion is coupled to the negative terminal of the battery constituting the vehicle-mounted ground terminal and / or the ground connection portion provided on the vehicle body. According to the engine static eliminator, workability can be improved by selecting the negative terminal of the battery and the ground connection part of the vehicle body and coupling the ground terminal connection part according to the specifications of the vehicle type and the like. It is possible to perform reliable ground wiring.

  According to the engine static eliminator according to the present invention constructed as described above, the spark plug spark characteristics are deteriorated by being attached and charged by an easy operation at an optimum position in the ignition electrical system of all existing vehicles. By efficiently removing static electricity, the compressed gas mixture is completely combusted in the cylinder, improving fuel efficiency, improving output in each rotation range, improving torque and leveling in the middle / low speed range, improving accelerator response, or It is possible to improve engine startability and stabilize idling.

  Embodiments of a static eliminator for an automobile engine (hereinafter abbreviated as a static eliminator) according to the present invention will be described below in detail with reference to the drawings. A static eliminator 10 shown as the first embodiment in FIGS. 1 to 5 is used in a plug cord type four-cylinder engine 1 and includes four spark plugs 2A to 2D (hereinafter, individually described cases). 4 plug cords 3 </ b> A to 3 </ b> D (hereinafter collectively referred to as “plug cord 3” unless otherwise described), and a negative terminal 4 </ b> A of the battery 4. Are electrically connected to each other, and the static electricity charged in each plug cord 3 is removed.

  The engine 1 is an existing engine, and as shown in FIG. 1, each of the spark plugs 2 is provided with a spark plug 2 facing the ignition portion in the cylinder by being screwed into a plug hole formed in the engine head. The plug cord 3 is connected to the terminal portion by fitting the cap-shaped tip portion. As shown in FIG. 2, an ignition electrical system 5 is configured between the engine 1 and the battery 4, and the ignition electrical system 5 supplies a high voltage spark starting current to the ignition plug 2 to ignite each ignition plug 2. A spark is generated in the part, and the compressed mixed gas filled in the cylinder is burned at once.

  The ignition electrical system 5 is an ignition electrical system provided in an existing engine, and includes a battery 4, an ECU 6 that omits details, a coil 7, a distributor 8, a plug cord 3, a spark plug 2, and the like. . When the starter switching operation is performed, the ignition electrical system 5 performs an overall control operation by the ECU 6, and generates a spark in an optimal state from each spark plug 2 by the battery voltage supplied from the battery 4. The ignition electrical system 5 boosts the battery voltage supplied from the battery 4 to 10,000 volts or more by the coil 7, and distributes the spark starting current to each spark plug 2 by the distributor 8 with good timing.

  In the ignition electrical system 5, since a high voltage spark starting current flows through each plug cord 3 that connects the distributor 8 and the spark plug 2 as described above, an insulating film having a large thickness is provided. In the ignition electrical system 5, a reverse induction current is generated in each plug cord 3 due to the spark starting current, and high voltage static electricity is charged in the insulating coating. In the ignition electrical system 5, the static electricity removing device 10, which will be described in detail later, is connected to each plug cord 3, thereby suppressing the generation of reverse induction current and removing static electricity.

  As shown in FIGS. 1 and 3, the static eliminator 10 is provided with plug cord coupling portions 11 </ b> A to 11 </ b> D (hereinafter collectively referred to as a plug cord coupling portion 11 unless otherwise described) at one end portion. Plug cord connection cable bodies 12A to 12D (hereinafter collectively referred to as plug cord connection cable body 12 unless otherwise described), and an earth connection cable body provided with an earth terminal coupling portion 13 at one end. 14 and a connector portion 15 for connecting each plug cord connecting cable body 12 integrally and connecting to the ground connecting cable body 14. Although not described in detail, the static eliminator 10 has a total length that is longer than the distance between the engine 1 and the battery 4 and is wired so as not to disturb or hinder other parts in the engine room. It is fixed at an appropriate position by a binding tool such as a tie wrap.

  The static eliminator 10 includes a plug cord connection cable body 12 and a ground connection cable body 14 that are formed in substantially the same manner, and each includes a highly conductive metal core wire 16 and an insulating coating 17 that covers the metal core wire 16. Is done. As the plug cord connecting cable body 12 and the ground connecting cable body 14, a metal core wire 16 in which a high-purity copper fine wire is woven into a mesh shape and formed into a flat rectangular cross-sectional shape is used. By covering with an insulating coating 17 formed of silicon rubber having heat resistance characteristics or an appropriate insulating synthetic resin or the like, the whole is configured as a flat cable body having flexibility.

  The static eliminator 10 is configured so that each plug cord connection cable body 12 and the ground connection cable body 14 each have a plug cord in a state where the insulation coating 17 is peeled off at a predetermined length at each end and the metal core wire 16 is stripped. The connecting portion 11 and the ground terminal connecting portion 13 are attached, and the plug cord connecting cable bodies 12 are integrated by the connector portion 15. Of course, the metal core wire 16 is not limited to the copper mesh wire described above, and may be a wire formed of an appropriate metal material having good conductivity and flexibility.

  For example, the plug cord coupling portion 11 electrically applies the metal core wire 16 exposed from the insulating coating 17 by applying tin plating to a copper wire to a clamp member 18 formed of aluminum as a base material to improve conductivity. Connected and configured. The clamp member 18 is integrally formed with a core wire connecting portion 19 for connecting and fixing the metal core wire 16 and a cord connecting portion 20 for connecting the plug cord 3. As shown in FIGS. 4 and 5, the clamp member 18 is formed such that the core wire connection portion 19 penetrates the fitting hole 21 having a flat rectangular cross-sectional shape substantially equal to the cross-sectional dimension of the plug cord connection cable body 12 in the length direction. In addition, a slit 23 in the length direction is formed in the partition wall 22 that partitions the fitting hole 21 and the cord coupling portion 20.

  The clamp member 18 includes a pair of standing wall portions 24 </ b> A and 24 </ b> B in which the cord coupling portion 20 is integrally formed on both side portions in the width direction of the core wire connection portion 19 so as to face each other over the entire length in the length direction. . In the cord coupling portion 20, each of the standing wall portions 24A and 24B is formed in a substantially arc-shaped cross-sectional shape, and inside the standing wall portions 24A and 24B, the diameter is slightly larger than the outer diameter of the plug cord 3 as shown in FIG. The cord fitting space 25 is formed over the entire length.

  In the clamp member 18 configured as described above, the metal core wire 16 is fitted into the fitting hole 21 in a state where the plug cord connecting cable body 12 is fitted with the insulating fixing tube 26 on the outer periphery thereof. As shown in FIG. 4, the clamp member 18 folds the metal core wire 16 having the fitting hole 21 penetrated into the cord fitting space portion 25 along the partition wall 22 and penetrates it to the fitting side. The plug cord connecting cable body 12 is coupled to the cord coupling portion 20 by fitting the fixing tube 26. In this state, the clamp member 18 is electrically connected to the plug cord connecting cable body 12 when the metal core wire 16 contacts in the fitting hole 21 of the cord coupling portion 20.

  When the clamp member 18 is pushed into the plug cord 3 across the standing wall portions 24A and 24B, the plug cord 3 is fitted into the cord fitting space 25 as shown by a chain line in FIGS. Assembled. In this state, the clamp member 18 caulks the standing wall portions 24A and 24B toward each other as indicated by arrows in FIG. 5 so that the standing wall portions 24A and 24B sandwich the plug cord 3 in the cord fitting space 25. Combined. In the clamp member 18, the metal core wire 16 penetrated through the cord fitting space portion 25 in this state is in contact with the outer peripheral portion of the plug cord 3 over the entire region in the cord fitting space portion 25. In addition, the clamp member 18 caulks the standing wall portions 24 </ b> A and 24 </ b> B, so that the slit 23 of the partition wall 22 becomes narrow and the plug cord connecting cable body 12 is more firmly fixed in the fitting hole 21.

  The ground terminal coupling portion 13 is formed of, for example, a copper plate, and includes a ground terminal member 29 including a connection terminal portion 27 and a caulking portion 28 formed integrally with the connection terminal portion 27 as shown in FIG. The member 29 is fixed to the negative terminal 4 </ b> A of the battery 4. As is well known, the battery 4 has a negative terminal 4A and a positive terminal formed in a round bar shape, and a bracket member 4B (see FIG. 6) fixed to the terminals by a mounting bolt 4C and a nut 4D. The battery cord is connected via The ground terminal member 29 is formed in a ring shape in which the connection terminal portion 27 has a fitting hole 27A having substantially the same diameter as the outer diameter of the mounting bolt 4C in the same manner as the connection terminal portion of the battery cord, as will be described later. It is fitted to the mounting bolt 4C and fastened together with the battery cord to the bracket member 4B. The connection terminal portion 27 has a caulking portion 28 formed in an overall cylindrical shape, and the metal core wire 16 exposed from the insulating coating 17 of the ground connection cable body 14 is fitted therein.

  Although not described in detail in the ground terminal coupling portion 13, the ground connection cable body 14 is fitted in the caulking portion 28 in a state where the ground connection cable body 14 is fitted on the outer peripheral portion of the ground connection cable body 14 with the ground terminal member 29. The exposed end portion of the metal core wire 16 is fitted. In this state, the ground terminal member 29 is subjected to a caulking process for reducing the diameter of the caulking portion 28, the metal core wire 16 is integrated with the caulking portion 28, and the caulking portion is covered with the insulating fixing sleeve 30, thereby connecting to the earth. A ground terminal coupling portion 13 is formed at one end portion of the cable body 14.

  In the ground terminal coupling portion 13 configured as described above, the ground terminal member 29 has the nut 4D loosened, the bracket member 4B is removed from the ground terminal 4B, and the fitting bolt 4C from which the nut 4D has been removed penetrates the fitting hole 27A. Can be assembled. The ground terminal coupling portion 13 is fastened together with the battery cord and the ground terminal 4A by reassembling the bracket member 4B to the ground terminal 4A and tightening the nut 4D with respect to the mounting bolt 4C, and the ground connection cable body is connected to the negative terminal 4A. 14 is connected.

  Each plug cord connecting cable body 12 has the metal core wire 16 exposed from the insulation coating 17 on the other end side facing the one end portion where the clamp member 18 is provided, and the metal core wires 16 are electrically connected to each other at the connector portion 15. And integrated. Also in the ground connection cable body 14, the metal core wire 16 is peeled off from the insulating coating 17 on the other end portion side facing the one end portion provided with the ground terminal member 29, and connected to the connector portion 15. Although not described in detail, the connector portion 15 has a fitting hole for fitting each metal core wire 16 of each plug cord connection cable body 12 at one end side, and a metal core wire of the ground connection cable body 14 at the other end side. A fitting hole for fitting 16 is opened, and a connector 31 having an insulating surface treatment such as alumite treatment is provided on the outer peripheral portion.

  As shown in FIG. 3, the connector 31 has the plug cord connection cable body 12 and the metal core wire 16 of the ground connection cable body 14 that are fitted from the respective fitting holes overlapped in the thickness direction inside, and is fixed from the outer periphery to the fixing screw. Each metal core wire 16 is mechanically coupled and electrically connected by screwing 31A. The connector 31 is not limited to such a configuration, and may be configured by an insulating bush having a simple shape formed in a substantially cylindrical shape using, for example, silicon rubber or an insulating resin material. The connector 31 combines the four plug cord connection cable bodies 12 into one to form the ground connection cable body 14, so that it can be easily routed in the engine room and the workability is improved. And ensure safe wiring.

  Moreover, although the connector part 15 couple | bonded the four plug cord connection cable bodies 12 and the earth connection cable body 14 via the connector 31 and the insulation bush as mentioned above, it is not limited to this structure. For example, the connector portion 15 is configured by integrating the first plug cord connection cable body 12A and the second plug cord connection cable body 12B to form a first cable body, and the third plug cord connection cable body 12C is connected to the first cable body. Are integrated to form a second cable body, and the fourth cable body 12D is integrated with the second cable body to form a third cable body. The third cable body and the ground connection cable body You may comprise by the some connector part which integrates 14. In this case, the connector portion 15 may be configured such that each cable body is coupled using the same product as the clamp member 18 described above.

  In the static eliminator 10 configured as described above, as shown in FIG. 2, the plug cord coupling portion 11 provided in each plug cord connecting cable body 12 is coupled to the outer peripheral portion with respect to the opposite plug cord 3. To do. In the static eliminator 10, each plug cord coupling portion 11 is simply subjected to a caulking process on the standing wall portions 24 </ b> A and 24 </ b> B in a state where the plug cord 3 is fitted in the cord fitting space portion 25 of the clamp member 18. It is possible to attach by simple work.

  In the static eliminator 10, the ground terminal coupling portion 13 provided on the ground connection cable body 14 is coupled to the negative terminal 4 </ b> A of the battery 4. In the static eliminator 10, the connection with the battery 4 can be performed by a simple operation in the same manner as the battery cord. In the static eliminator 10, since each cable body is configured to be flexible, it can be routed relatively freely even in an engine room having a high mounting density, and it can also be hooked. Occurrence of dropout or damage is also prevented. Since the static eliminator 10 has the above-described structure, it can be attached with compatibility even in different vehicle types.

  In the static eliminator 10, the outer periphery of each plug cord 3 and the negative terminal 4A of the battery 4 are electrically connected by performing the above-described wiring connection process. In the static eliminator 10, static electricity charged in the plug cord 3 is caused to flow through the negative terminal 4A to eliminate static electricity, and the occurrence of reverse induction current is reduced in each plug cord 3 through which a high voltage spark starting current flows. In the static eliminator 10, the spark starting current efficiently flows through each plug cord 3 so that each spark plug 2 performs a stable spark operation.

  In the static eliminator 10, the fuel consumption is improved by complete combustion of the compressed gas mixture in the cylinder, the output is improved in each rotation range, the torque is increased and leveled in the middle and low speed ranges, the accelerator response is improved, or the engine startability is improved. Improve and stabilize idling.

  In the static eliminator 10, when performing maintenance or the like, the plug cord connecting portion 18 can be easily removed from the plug cord 3 by spreading the standing wall portions 24A and 24B of the clamp members 18 with an appropriate jig. It is. Further, in the static eliminator 10, the ground terminal coupling portion 13 can be easily detached from the negative terminal 4 </ b> A of the battery 4 in the same manner as the battery cord removal operation.

  In the static eliminator 10, the ground connection cable body 14 is connected to the negative terminal 4A of the battery 4 by using the bracket member 4B, the mounting bolt 4C, and the nut 4D to connect the ground terminal coupling portion 13 provided at the tip thereof. However, it is not limited to such a wiring example. In the static eliminator 10, for example, as shown by a chain line in FIG. 2, the ground terminal coupling portion 13 may be coupled to a ground terminal member 32 provided at an appropriate position on the body, the details of which are omitted.

  Further, in the static eliminator 10, as described above, the single ground connection cable body 14 branched from each plug cord connection cable body 12 in the connector portion 15 is connected to the negative terminal 4A of the battery 4 or the ground terminal member 32 of the body. Although connected, it is not limited to such a configuration. In the static eliminator 10, for example, two ground connection cable bodies 14 are branched from the connector portion 15, and these ground connection cable bodies 14 are coupled to the negative terminal 4A of the battery 4 and the ground terminal member 32 of the body, respectively. It's also good. As described above, the static eliminator 10 is used for the plug cord type four-cylinder engine 1, but the number of plug cord connecting cable bodies 12 corresponding to the number of cylinders of the engine is provided, for example, a six-cylinder engine. In the case of using for the above, six plug cord connecting cable bodies 12 are provided.

  In the static eliminator 10, as described above, the plug cord coupling portion 11 having the clamp member 18 is provided at the distal end portion of the plug cord connection cable body 12, and the ground terminal member 29 is disposed at the distal end portion of the ground connection cable body 14. A ground terminal coupling portion 13 is provided. In the static eliminator 10, the number of cable bodies increases. However, for example, the cable bodies 35 shown in FIG. 6 in which each plug cord 3 and the ground terminal member 32 are directly connected may be used.

  The cable body 35 is configured by covering the metal core wire 16 with the insulating coating 17 in the same manner as the plug cord connection cable body 12 and the ground connection cable body 14 described above. The cable body 35 is provided with a clamp member 36 formed substantially in the same manner as the above-described clamp member 18 on one end side, and an earth terminal member 37 formed substantially in the same manner as the above-described ground terminal member 29 on the other end side. Is provided. Instead of the pair of standing walls 24A and 24B described above, a plug cord clamp portion 38 formed in a substantially C shape from the core wire coupling portion 19 is integrally formed on the clamp member 36.

  In the clamp member 36, a fitting port 39 having a slightly smaller width than the outer diameter of the plug cord 3 is formed over the entire length between the core wire coupling portion 19 and the plug cord clamp portion 38. The clamp member 36 pushes the plug cord 3 into the plug cord clamp portion 38 through the fitting port 39 as shown by an arrow in FIG. It is attached to the part. The cable body 35 can be coupled to the outer periphery of the plug cord 3 at different angles by providing the clamp member 36.

  In the cable body 35, the ground terminal member 37 forms an opening 41 in a part of the fitting hole 40 </ b> A to form the connection terminal portion 40 in a substantially C shape. The opening 41 of the ground terminal member 37 is slightly smaller than the outer diameter of the mounting bolt 4C that fixes the bracket member 4B to the negative terminal 4A of the battery 4, for example. The ground terminal member 37 fits the mounting bolt 4C into the fitting hole 40A through the opening 41. By providing such a ground terminal member 37, the cable body 35 can be coupled to the minus terminal 4A from an arbitrary position without the need to remove the battery cord. The clamp member 36 and the ground terminal member 37 may be used in place of the clamp member 18 or the ground terminal member 29 of the static eliminator 10 described above.

  A static eliminator 50 shown in FIG. 7 as the second embodiment is used in a direct ignition type six-cylinder engine, and has six direct coils 51A to 51F directly connected to six spark plugs 2A to 2F, respectively. (Hereinafter generically referred to as the direct coil 51 unless otherwise described) and the negative terminal 4A of the battery 4 or the ground terminal member 32 of the body is electrically connected, and each direct coil 51 is charged. Remove static electricity.

  In the direct ignition type ignition electrical system 52, as described above, the cable bodies 53 </ b> A to 53 </ b> F (hereinafter collectively referred to as the cable body 53 unless otherwise described) that connect the ECU 6 and each direct coil 41. Since no high-voltage current is supplied to the cable body 53, no special measures against static elimination are required for these cable bodies 53. In the ignition electrical system 52, the outer iron cores 54 </ b> A to 54 </ b> F of the direct coils 51 (hereinafter collectively referred to as the outer iron core 54 unless otherwise described) are exposed outwardly, although details are omitted. Is done. In the ignition electrical system 52, a weak current is charged on the outer iron core 54 of each direct coil 51, and a slight leak current is generated.

  The static eliminator 50 eliminates the potential difference between the direct coils 54 by preventing the deterioration of the characteristics by causing each spark plug 2 to perform a stable spark operation by removing electricity from the outer iron core 54. In comparison with the static eliminator 10 described above, the static eliminator 50 is the same as the ground terminal coupling portion 13, the ground connection cable body 14, and the connector portion 15. The static eliminator 50 is generally referred to as six coil coupling portions 55A to 55F corresponding to the plug cord coupling portion 11 (hereinafter referred to as coil coupling portions 55 except when individually described. FIG. Only the coupling portions 55A and 55F are denoted by reference numerals.), And six coil connection cable bodies 56A to 56F (hereinafter referred to as "corresponding to the plug cord connection cable body 12 having the coil coupling portions 55 provided at the distal ends thereof"). Unless otherwise described individually, the coil connection cable body 56 is generally referred to.).

  Each coil coupling portion 55 includes a terminal member made of a ring-shaped member that is substantially the same as the ground terminal member 29 of the static eliminator 10 described above, for example, using a copper plate having a predetermined thickness as a material. ing. That is, each terminal member includes a ring-shaped connection terminal portion and a connection portion formed integrally with the connection terminal portion, and the connection terminal portion is substantially the same diameter as the outer diameter of the outer iron core 54 of the direct coil 51. Are fitted to the outer peripheral portion of the direct coil 51. Each terminal member has a connecting portion formed in an overall cylindrical shape, and is connected to the metal core wire 16 exposed from the insulating coating 17 of the plug cord connecting cable body 12.

  In the static eliminator 50, each coil coupling portion 55 loosens a bolt for attaching each direct coil 51 to the engine head and removes the cable body 53 to connect each terminal member to each direct coil 51 that is opposed. Mated and connected. In the static eliminator 50, by reattaching the cable body 53 and tightening the bolt with the terminal members fitted, the coil coupling portions 55 are fastened together and coupled to the opposing direct coil 51. . In the static eliminator 50, the ground connection cable body 14 side is connected to the ground terminal coupling portion 13 to the negative terminal 4A of the battery 4 or the ground terminal member 32 of the body in the same manner as the static eliminator 10 described above.

  In the static eliminator 50 configured as described above, as shown in FIG. 7, the outer periphery of the outer core 54 of the direct coil 51 that opposes the coil coupling portion 55 provided in each coil connection cable body 56. Join the part. In the static eliminator 50, when the cable body 53 is attached to the direct coil 51, it can be attached by a simple operation in which the coil coupling portion 55 is fastened together. In the static eliminator 50, the ground terminal coupling portion 13 on the ground connection cable body 14 side is coupled to the negative terminal 4 </ b> A of the battery 4. In the static eliminator 50, the connection with the battery 4 can be performed by a simple operation in the same manner as the battery cord. In the static eliminator 50 as well, each cable body is configured to be flexible, so that it can be routed relatively freely even in an engine room having a high mounting density, and it can be caught by a hook or the like. Occurrence of dropout or damage is also prevented. Since the static eliminator 50 has the above-described structure, it can be attached with compatibility even in different vehicle types.

  In the static eliminator 50, by performing the above-described wiring connection process, each direct coil 51 and the negative terminal 4A of the battery 4 are electrically connected. In the static eliminator 50, static electricity or leakage current charged on the outer iron core 54 of the direct coil 51 flows to the negative terminal 4A, and static elimination is performed. In the static eliminator 50, this makes each spark plug 2 perform a stable spark operation. In the static eliminator 50, the fuel consumption is improved by complete combustion of the compressed gas mixture in the cylinder, the output is improved in each rotation range, the torque is increased and leveled in the middle / low speed range, the accelerator response is improved, or the engine startability is improved. Improve and stabilize idling.

  In the static eliminator 50, the coil coupling portion 55 can be easily detached from each direct coil 51 together with the battery cord when performing maintenance or the like. In the static eliminator 50, the ground terminal coupling portion 13 can be easily detached from the negative terminal 4A of the battery 4 in the same manner as the battery cord removal operation.

  In the static eliminator 50, the ground connection cable body 14 not only couples the ground terminal coupling portion 13 provided at the tip of the ground connection cable body 14 to the negative terminal 4A of the battery 4, but as shown by a chain line in FIG. You may make it couple | bond with the earthing terminal member 32. FIG. Also in the static eliminator 50, the two ground connection cable bodies 14 are branched through the clamp portion 15, and these ground connection cable bodies 14 are respectively connected to the negative terminal 4A of the battery 4 and the ground terminal member 32 of the body. You may make it combine.

  The static eliminator 50 described above has six coil connection cable bodies 56 and is used in a direct ignition type six-cylinder engine. However, the present invention is not limited to the static eliminator 50. The static eliminator is provided with a number of coil connection cable bodies 56 corresponding to the number of cylinders of the engine. For example, when used in an 8-cylinder engine, the static electricity removal apparatus is provided with 8 coil connection cable bodies.

It is a principal part perspective view which shows the example of installation of the static eliminator for plug-cylinder type | mold 4-cylinder engines shown as 1st Embodiment of this invention. It is a block diagram of the ignition electrical system which connected the static eliminating device. It is a principal part disassembled perspective view which shows the structure of a static eliminating device. It is principal part sectional drawing which shows the structure of the plug cord coupling | bond part of an electrostatic removal apparatus. It is a front view of a plug cord coupling part. It is a principal part perspective view of another cable body. It is a block diagram of the ignition electrical system which connected the static eliminator for 6 cylinder engines of a direct ignition system shown as the 2nd Embodiment of this invention.

Explanation of symbols

  1 engine, 2 spark plug, 3 plug cord, 4 battery, 4A minus terminal, 5 ignition electrical system, 6 electronic control unit (ECU), 7 coil, 8 distributor, 10 static eliminator, 11 plug cord joint, 12 plug Cord connection cable body, 13 Ground terminal connection portion, 14 Ground connection cable body, 15 Connector portion, 16 Metal core wire, 17 Insulation coating, 18 Clamp member, 19 Core wire connection portion, 20 Cord connection portion, 26 Insulation fixing tube, 29 Ground Terminal member, 30 Insulation fixing sleeve, 31 Connector, 32 Ground terminal member, 35 Cable body, 36 Clamp member, 37 Ground terminal member, 50 Static eliminator, 51 Direct coil, 52 Ignition electrical system, 53 Cable body, 54 Outer iron Core, 56 carp Connection cable body

Claims (6)

A flexible cable body in which a conductive metal core wire is coated over the entire length with an insulating coating;
A plug cord coupling portion provided on one end side of the cable body, detachably coupled to the plug cord, and crimping the first end portion of the metal core wire to an outer peripheral portion thereof;
It is provided on the other end side of the cable body, and is composed of a ground terminal coupling portion that is detachably coupled to a vehicle-mounted ground terminal and connects the second end of the metal core wire,
An electrostatic removal apparatus for an engine which removes static electricity charged in the plug cord. A plurality of the plug cord coupling portions that are attached to and detached from the plurality of plug cords, and at least one of the plurality of cable bodies drawn from each plug cord coupling portion is electrically connected by a connector; Bound to a cable body of books,
2. The static electricity removing apparatus for an engine according to claim 1, wherein the ground terminal coupling portion is provided at an end portion of the binding cable body.   2. The static electricity removing apparatus for an engine according to claim 1, wherein the ground terminal coupling portion is coupled to a negative terminal of a battery constituting the on-vehicle ground terminal and / or a ground connection portion provided on a vehicle body. . A flexible cable body in which a conductive metal core wire is coated over the entire length with an insulating coating; and
A direct coil coupling portion provided on one end side of the cable body and detachably coupled to an iron core of a direct coil provided for each cylinder and crimping the first end portion of the metal core wire to the outer peripheral portion thereof When,
The cable body is provided on the other end side, and is configured to include a ground terminal coupling portion that is detachably coupled to the ground terminal and connects the second end of the metal core wire,
An electrostatic removal apparatus for an engine which removes static electricity charged in the direct coil. A plurality of the direct coil coupling portions that are attached to and detached from the iron cores of the plurality of direct coils, and a plurality of the cable bodies drawn from the direct coil coupling portions are electrically connected by a connector. Are bundled into at least one cable body,
5. The static electricity removing apparatus for an engine according to claim 4, wherein the ground terminal coupling portion is provided at an end portion of the binding cable body.   5. The static electricity removing apparatus for an engine according to claim 4, wherein the ground terminal coupling portion is coupled to a negative terminal of a battery constituting the vehicle-mounted ground terminal and / or a ground connection portion provided on a vehicle body. .

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