JP4419906B2 - Electrical connector - Google Patents

Description

  The present invention relates to an electrical connector including a power receiving connector directly connected to an automobile electronic component or the like and a power feeding connector connected to a harness, and more specifically, it is possible to achieve both assembling property of the electrical connector and maintenance of clamping force after assembly. It relates to the connector structure.

There are actuators using electromagnetic solenoids or piezo stacks as electronic parts for automobiles, and they are used in various devices such as control valves for fuel injection systems. For example, the fuel injection pump disclosed in Patent Document 1 uses an electromagnetic spill valve with a built-in solenoid actuator, and switches the energization / non-energization of the solenoid actuator to control the opening / closing timing of the electromagnetic spill valve. The fuel injection amount is controlled. The solenoid actuator is connected to an external battery via an electrical connector attached to the valve housing, and is on / off controlled by power supply from the battery.
JP 2001-336644 A

  In a fuel injection system, in order to improve controllability such as responsiveness to an injection command, a technique for causing an actuator to respond at high speed is required. In recent years, with the increase in the speed of this automobile actuator, the impact acceleration generated in the electrical connector directly connected to the actuator and the device incorporating the actuator has increased. In addition, since the device incorporating the actuator and the harness are clamped to different members, there is a relative displacement between the electrical connector and the harness directly connected to the device. That is, the harness acting force due to the relative displacement acts on the terminal coupling portion between the power feeding connector connected to the harness and the power receiving connector connected to the actuator.

  When a conventional direct connector is used in a device included in a high-speed actuator, relative slip occurs between both terminals at the terminal joint of the electrical connector due to a decrease in the coefficient of friction of the terminal due to impact acceleration and the harness acting force due to relative displacement. The problem that the terminal wears out occurs. FIG. 7 is a diagram showing a conventional connector structure. A female terminal 10a having a spring mechanism is provided on the power supply connector 1, a male terminal 20a is provided on the power receiving connector 2, and the male terminal 20a is slid on the female terminal 10a. The male terminal 20a is clamped by the pressure contact force of the spring mechanism, and both are electrically coupled.

  In such a structure, since the contact pressure at the time of insertion and the contact pressure at the time of completion of insertion are the same, if the relative slip generated between the terminals 10a and 20a is to be suppressed, the insertability is deteriorated and conversely the insertability is reduced. However, it has been difficult to achieve both wear resistance and insertability.

  To solve this problem, for example, when the power feeding connector 1 and the power receiving connector 2 are coupled, the outer terminals 10a and 20a are coupled to each other and the outer connector housings 10 and 20 are tightly fitted to each other to cause slippage between the terminals. Attempts have been made to suppress this. However, since a gap for assembly is also required between the connector housings 10 and 20 and the terminals 10a and 20a, the sliding cannot be completely stopped. In addition, when the connector housings 10 and 20 made of resin are tightly fitted, there is a problem that the resin may cause creep deformation due to heat of the engine room.

  For this reason, direct-connect connectors cannot be used in devices with high-speed actuators, and lead wires are pulled out of the product because they are electrically coupled with screws at the expense of assembly man-hours, or the manufacturing cost is unavoidable. At present, a connector is attached to the tip.

  The present invention achieves both improvement in assembling property and prevention of wear by suppressing slipping when connecting a power receiving connector and a power supply connector of an electric connector, and can be used by directly connecting even a device having a high-speed actuator. The object is to provide a connector.

  According to the first aspect of the present invention, the connector is composed of a power feeding connector and a power receiving connector, and at the same time the male housing provided in one of the connectors is inserted and fitted into the female terminal provided in the other, the female In an electrical connector device that is electrically connected by being brought into pressure contact with the male terminal by a spring mechanism provided in the mold terminal, the application of the pressure contact force by the spring mechanism is limited when the male terminal is inserted, and when the insertion is completed, A pressure contact variable mechanism that lifts the contact pressure between the male terminal and the female terminal by releasing the restriction is provided.

  According to the present invention, the pressure contact force variable mechanism restricts the application of the pressure contact force by the spring mechanism when the male terminal is inserted, so that the resistance between the two terminals can be reduced to improve the insertability. Further, since this restriction is released when the insertion is completed, the female terminal can be brought into pressure contact with the male terminal by the pressure contact force of the spring mechanism. Therefore, it is possible to achieve both improvement in assembling properties of the power receiving connector and the power feeding connector and prevention of wear due to slip suppression, and use as a direct connection connector for a device having a high-speed actuator, thereby reducing manufacturing costs.

Specifically, in the first aspect of the present invention , the female terminal is in contact with the male terminal to maintain electrical connection, and urges the terminal part toward the male terminal. A spring portion for applying a pressure contact force, and the pressure contact force variable mechanism includes a claw portion provided integrally with the terminal portion of the female terminal, and a contact with the claw portion. It comprises a restricting portion that reduces the urging force of the spring portion, and reduces the pressure contact force of the spring portion acting on the terminal portion when the male terminal is inserted.

  Thereby, the pressure contact force by a spring part becomes higher at the time of completion of insertion than at the time of insertion of a male terminal, and while improving insertability, the contact pressure at the time of completion of insertion can be secured.

  When the restricting portion of the pressing force varying mechanism presses the claw portion, the pressing force by the spring portion is reduced, and the male terminal can be inserted without resistance. When the insertion is completed, the restricting portion is removed from the claw portion, so that the spring portion can press the female terminal and hold the male terminal.

In the first aspect of the present invention, the variable pressure contact mechanism further includes a holding member for holding the female terminal in the connector housing on the female terminal side, and the male terminal in the connector housing. When the insertion of the male terminal is completed, the holding member slides to release the restriction portion from the claw portion and the restriction of the pressure contact force to the terminal portion is released. I did it.

  A holding member that slides integrally with the female terminal is provided, and before the male terminal is inserted, the restricting portion is in a position to press the claw portion, and is slided with insertion of the male terminal to be in a position to remove the restricting portion from the claw portion. . As a result, the terminal can be firmly coupled by changing the pressure contact force at the same time that the connector housing is assembled.

According to a second aspect of the present invention, a wire waterproof rubber is disposed between the power supply connector and the wire harness, a connector waterproof rubber is disposed between the power supply connector and a connector housing of the power reception connector, and the holding member is disposed on the wire. It is loaded into an airtight chamber surrounded by the waterproof rubber, the connector waterproof rubber and the connector housing.

  The joint between the external wire harness and the joint between both connectors is sealed with wire waterproof rubber and connector waterproof rubber, and an airtight chamber surrounded by these is provided. By disposing the holding member together with the female terminal in the hermetic chamber and coupling it with the male terminal, the waterproofness and airtightness of the connector can be ensured.

  Hereinafter, a first embodiment to which the present invention is applied will be described with reference to FIGS. FIG. 1 is a view showing a detailed structure of an electric connector C of the present invention, FIG. 2 is a view showing an overall configuration of a vehicle diesel engine E equipped with an electronically controlled fuel injection pump P using the electric connector C, and FIG. FIG. 3 is a cross-sectional view of the electronically controlled fuel injection pump P along the line AA. In FIG. 2, the electronic control fuel injection pump P is connected to the engine block B, and the electrical connector C of the present invention is directly connected to an electromagnetic control valve V built in the electronic control fuel injection pump P. A wire harness (hereinafter abbreviated as “harness”) 14 having one end connected to the electrical connector C is clamped to the upper surface of the engine head H by a clamp member 16, and the other end of the harness 14 is connected to a drive circuit (not shown). ing.

  The electrical connector C includes a power feeding connector 1 on the harness 14 side and a power receiving connector 2 on the electromagnetic control valve V side. In FIG. 3, the power supply connector 1 has a female terminal 1a to which the harness 14 is fixed, and the power receiving connector 2 has a male terminal 2a. The power receiving connector 2 is integrally provided on the upper part of the electromagnetic control valve V. When the power feeding connector 1 is covered from the upper side of the figure, the male terminal 2a is inserted and fitted into the female terminal 1a to be electrically connected. It comes to be combined.

  The electronically controlled fuel injection pump P is a so-called distributed fuel injection pump, and the electromagnetic control valve V is provided as a spill valve. The electromagnetic control valve V has an upper half portion as an electromagnetic drive portion 3 and a lower half portion as a valve portion 6, and energizes the electromagnetic drive portion 3 through an electrical connector C to drive the needle 7 of the valve portion 6. The pump chamber 8 and the low pressure chamber 9 are opened and closed. The valve portion 6 slidably accommodates a needle 7 in a cylindrical valve body 6a, and an annular flow path 6b formed around the small diameter intermediate portion of the needle 7 is a flow path 6c penetrating the side wall of the valve body 6a. It communicates with the low pressure chamber 9 via An annular channel 6d communicating with the pump chamber 8 is formed above the annular channel 6b by cutting out the inner periphery of the valve body 6a. A tapered seat 7a is formed between the annular flow path 6b and the annular flow path 6d, and the large diameter portion of the needle 7 is seated thereon. A spring 7b is disposed below the needle 7 to urge the needle 7 upward (in the valve opening direction).

The electromagnetic drive unit 3 includes a cylindrical solenoid housing 3a in which a stator 4b accommodating a coil 4a is disposed, and a disk-shaped armature 5 is disposed above the stator 4b . Rods 5a fixed to the A Macha 5 extends downward through the center of the stator 4b, which is slidable in the vertical direction integrally coupled to the needle 7 of the valve 6. A cover 5b is disposed above the armature 5, and a stopper 5c for restricting the movable range of the armature 5 is provided at the center of the lower surface of the cover 5a. An upper housing 3b formed integrally with the power receiving connector 2 of the electrical connector C is fixed to the opening of the solenoid housing 3a.

  A signal input terminal 4 c for inputting an external electric signal is connected to the coil 4 a of the electromagnetic drive unit 3. The signal input terminal 4c extends through the armature 5 and the cover 5b into the upper housing 3b and is electrically connected to the male terminal 2a of the power receiving connector 2. When the coil 4a is energized through the electrical connector C, the armature 5 is sucked downward, and the needle 7 integrated therewith is lowered and closed (in the state shown). When the energization is stopped, the armature 5 and the needle 7 are raised and opened. By controlling the opening / closing timing of the valve unit 6, the fuel injection amount to each cylinder of the engine can be adjusted.

  Next, the detailed structure of the electrical connector C will be described with reference to FIG. Fig.1 (a) has shown the state before connector fitting. In the figure, a connector housing 11 of the power feeding connector 1 is a large and small two-stage cylindrical body having a large diameter on the power receiving connector 2 side, and a harness 14 is inserted and held in a cylindrical waterproof rubber 1b disposed in the small diameter portion. ing. The large diameter portion of the connector housing 11 is a double cylinder, and the female terminal 1a is accommodated in the inner cylinder 12 having the same diameter as the small diameter portion in a state of being built in the sleeve 1j. The connector housing 21 of the power receiving connector 2 is configured such that the male terminal 2a is accommodated and held in a cylindrical portion 2b protruding to the power feeding connector 1 side.

  The female terminal 1a of the power supply connector 1 is made of a metal plate, and one end thereof extends into the small diameter portion along the inner periphery of the sleeve 1j as a holding member, and is caulked and fixed to the harness 14 at two locations. Of these two locations, the caulking portion 1c is caulked together with the wire waterproof rubber 1b, and the caulking portion 1d is a caulking portion for electrical coupling with the harness conducting portion. The other end side of the female terminal 1a is bent into a substantially U shape to have a spring mechanism, and serves as a terminal portion that presses and electrically connects both sides of the U shape to the male terminal 2a. In addition to the upper terminal 1f and the lower terminal 1e, the bottom part is a leaf spring-like spring part 1g that applies a pressing force to the upper and lower terminals 1f, 1e. The other end of the female terminal 1a is a claw portion 1h that extends in the bottom direction along the upper terminal 1f and protrudes in an arc shape above the spring portion 1g. Here, the claw portion 1h is located in a through hole 1m formed on the side surface of the intermediate portion of the sleeve 1j, and is in contact with the inner cylinder 12 of the connector housing 11 on the outer side.

  At this time, the inner peripheral surface of the inner cylinder that comes into contact with the claw portion 1h functions as a restricting portion 13 that suppresses the biasing force of the spring portion 1g. That is, the female terminal 1a is urged in a direction in which the distance between the upper and lower terminals 1f and 1e is reduced by the urging force of the spring portion 1g, but the restricting portion 13 moves the claw portion 1h between the upper and lower terminals 1f and 1e. Since pressing is performed in the opening direction, the gap between the upper terminal 1f and the lower terminal 1e is not less than the set gap δ. For example, the gap δ is appropriately set to be equal to or greater than the thickness t of the male terminal so as not to become a resistance when the male terminal 2a of the power receiving connector 2 is inserted.

  The sleeve 1j is slidably provided with respect to the inner cylinder 12, and a plurality of depressions 11 are provided on the outer peripheral surface of the end of the sleeve 1j protruding into the small diameter portion of the connector housing 11 for positioning. Yes. The plurality of recesses 11 are provided at two locations in the sliding direction, and any one of them is engaged with a plurality of protrusions 1k provided on the inner peripheral surfaces of the small-diameter portions facing each other. That is, the relative position of the sleeve 1j with respect to the connector housing 11 is switched in two stages. Here, the plurality of protrusions 1k on the inner peripheral surface of the small diameter portion are engaged with the plurality of depressions 11 located on the harness 14 side, and the sleeve 1j is in the illustrated left end position.

  Further, in order to prevent the connector housings 11 and 21 from coming off, the connector housing 21 of the power receiving connector 2 is provided with a protrusion 2d having a substantially trapezoidal cross section on the outer peripheral surface of the bottom of the cylindrical portion 2b. The housing 11 is provided with a notch 1n engaged with the tip of the outer cylinder. A ring-shaped connector waterproof rubber 1i is disposed at the bottom of the outer cylinder of the connector housing 11 facing the tip of the cylindrical part 2b. Therefore, the sleeve 1j that holds the female terminal 1a is loaded into an airtight chamber surrounded by the wire waterproof rubber 1b, the connector waterproof rubber 1i, and the connector housings 11 and 12, and the waterproofness of the terminal coupling portion is Airtightness is ensured.

  In the inner cylinder 12 of the connector housing 11, a notch 15 that is adjacent to the restricting portion 13 and communicates with the through hole 1 m of the sleeve 1 j is formed so as to be shifted from the through hole 1 m toward the small diameter portion. This notch 15 is located at the same position as the through hole 1m when the sleeve 1j slides toward the harness 14 and reaches the right end position, and the restriction to the claw part 1h by the restriction part 13 is released. The claw portion 1h, the restricting portion 13, and the notch 15 serve as a pressing force variable mechanism that restricts the application of the pressing force by the spring mechanism of the female terminal 1a when the male terminal 2a is inserted, and releases the restriction when the insertion is completed. Function. The pressure contact variable mechanism will be described with reference to FIGS.

  When the power feeding connector 1 is extrapolated to the power receiving connector 2 as shown in FIG. 1B from the state before the fitting shown in FIG. 1A, the power receiving is performed between the inner and outer cylinders of the connector housing 11 of the power feeding connector 1. The cylindrical portion 2 b of the connector housing 21 of the connector 2 is inserted, and the male terminal 2 a of the power receiving connector 2 is inserted into the female terminal 1 a held by the sleeve 1 j of the power feeding connector 1. At this time, since the gap δ between the upper terminal 1f and the lower terminal 1e of the female terminal 1a is larger than the thickness t of the male terminal 2a, the female terminal 1a and the male terminal 2a are inserted without sliding resistance. .

  Here, the connector housing 11 and the sleeve 1j of the power feeding connector 1 move together at the beginning of insertion, but eventually the tip of the sleeve 1j hits the bottom surface 2c of the cylindrical portion 2b of the connector housing 21 of the power receiving connector 2. The sleeve 1j stops at this position (the state shown in FIG. 1B). Since the sleeve 1j is slidably provided with respect to the inner cylinder 12 of the connector housing 11, when the power feeding connector 1 is continuously pushed, only the connector housing 11 is slid outside the sleeve 1j.

  As the sleeve 1j slides, as shown in FIG. 1C, the claw portion 1h of the female terminal 1a is disengaged from the restricting portion 13 of the inner cylinder 12 holding it, and the claw portion 1h is notched 15 Get in. As a result, there is no restriction on the spring force of the spring portion 1g that biases the female terminal 1a to the male terminal 2a, so that the pressure contact force against the female terminal 1a is increased, and the upper terminal 1f and the lower terminal 1e are male. The terminal 2a is clamped. Thereby, electrical coupling of both terminals 1a and 2a is ensured. The spring force of the spring portion 1g can be set freely because it does not become a resistance when the connector is inserted, and can be set strongly so that relative displacement does not occur in the case of a product having a large impact acceleration such as a high-speed actuator.

  When the connector housing 11 of the power feeding connector 1 is further pushed in, the through hole 1m of the sleeve 1j moves relative to the right end position that coincides with the notch 15 of the inner cylinder 12, and the inner peripheral surface of the small-diameter portion enters the plurality of recesses 11 on the power receiving connector 2 side. The plurality of protrusions 1k are locked. At the same time, the distal end of the cylindrical portion 2b of the power receiving connector 2 abuts against the opposing connector waterproof rubber 1i and elastically deforms it, so that the retaining projection 2d on the outer periphery of the cylindrical portion 2b and the large diameter of the connector housing 11 The inner periphery of the part is fixed by a sliding notch 1n (state shown in FIG. 1C). Due to this relative movement, the distance 1 between the connector housing 11 and the end portion (the right end in the figure) of the sleeve 1j changes in a shortening direction as shown in FIGS.

  When the power supply connector 1 is detached, the notch 1n is lifted by a knob (not shown) and the connector housing 11 is pulled out to the position shown in FIG. At this time, only the connector housing 11 moves relative to the sleeve 1j, the through hole 1m of the sleeve 1j and the notch 15 of the inner cylinder 12 are displaced, and a plurality of projections with small diameter portions are projected into the plurality of recesses 11 on the harness 14 side. 1k is locked. Accordingly, the claw portion 1h of the female terminal 1a is pushed down by the restricting portion 13 provided in the inner cylinder 12, and the pressure contact force between the upper terminal 1f and the lower terminal 1e holding the male terminal 2a is increased. descend. As a result, a gap is formed between the tip of the upper terminal 1f and the lower terminal 1e, and a gap is formed between the male terminal 2a, so that the sleeve 1j comes out integrally with the connector housing 11.

  The operation of the fuel injection pump P having the above configuration and the operation and effect of the pressure contact variable mechanism will be described. In the fuel injection pump P of FIG. 3, when the electrical connector 1 is coupled as shown in FIGS. 1A to 1C and current is supplied from a drive circuit (not shown), the female terminal 1 a built in the power feeding connector 1 A current flows through the coil 4a of the electromagnetic control valve V through the male terminal 2a, and the stator 4b is excited. This magnetic force attracts the armature 5 downward, overcomes the spring force of the spring 6 and pushes down the needle 7. As the needle 7 descends, the seat 7a is closed and closed, and the communication between the pump chamber 8 and the low pressure chamber 9 is shut off, so that the pump chamber 8 is kept oil tight. Then, the fuel in the pump chamber 8 is boosted by a known fuel pumping mechanism (not shown) and is injected into the engine combustion chamber from a nozzle (not shown).

  When the supply of current from the electrical connector C to the electromagnetic control valve V is stopped, the needle 7 integrated with the armature 5 is raised by the spring force of the spring 6. As the needle 7 opens, the seat 7a is opened, so that the pump chamber 8 communicates with the low-pressure chamber 9, and the pressure in the pump chamber 8 decreases and the injection ends. At this time, since the armature 5 integrated with the raised needle 7 collides with the stopper 5c, impact acceleration is generated in the male terminal 2a and the power receiving connector 2 through the cover 5b and the upper housing 3b.

  In the electrical connector C of the present invention, since the female terminal 1a of the power supply connector 1 and the male terminal 2a of the power receiving connector 2 are firmly coupled at this time, the friction coefficient does not decrease and slipping due to the harness acting force Does not occur. That is, as shown in FIG. 1C, the restriction by the pressure contact variable mechanism is released, and the female terminal 1a is pressed against the male terminal 2a by the spring mechanism, so that the relative displacement is suppressed. In addition, the electrical coupling between the two is maintained, and wear due to sliding is prevented. On the other hand, when the power supply connector 1 and the power reception connector 2 are attached or detached, the pressure contact force variable mechanism is limited as shown in FIG. 1A, and the pressure contact force of the female terminal 1a does not act on the male terminal 2. It does not become a resistance when attaching and detaching. Therefore, it is not necessary to have a structure in which the connector housing 11 and the connector housing 12 made of resin are firmly fitted, and there is no possibility that a problem such as deformation of the resin portion occurs.

  Thus, according to the electrical connector C of the present invention, it is possible to achieve both the prevention of slippage and the improvement of the assembling performance of the female terminal 1a and the male terminal 2a. Therefore, it can be used as the electrical connector 1 directly connected to the electromagnetic control valve V of the fuel injection pump 3, and the increase in assembly man-hours and costs can be suppressed. In particular, in recent years, there has been an increasing need to clean exhaust gas, and there is a tendency to increase the rising speed of the needle 7 and the armature 5 of the electromagnetic control valve V in order to make the end of injection steep, but the rising speed is high. As the impact acceleration increases, the effect of the present invention is great.

  FIG. 4 shows an electrical connector 1 structure according to the second embodiment of the present invention. In the present embodiment, in the female terminal 1a of the power supply connector 1 of the first embodiment, a coil spring 17 is further installed between the claw portion 1h and the lower terminal 1e. In this way, the spring mechanism that applies the pressure contact force to the female terminal 1a has a double spring structure of the spring portion 1g and the coil spring 17, so that the spring force can be increased. Or it is good also as a structure which provides press-contact force only with the coil spring 17. FIG. In the first embodiment, the connector waterproof rubber 1i is disposed at the bottom of the outer cylinder of the connector housing 11. However, as in the present embodiment, the outer cylinder of the connector housing 11 and the cylinder of the connector housing 21 are formed as a thin cylinder. You may arrange | position between parts. A plurality of depressions 11 and a plurality of projections 1k for positioning are omitted. Other structures are the same as those in the first embodiment.

  FIG. 5 shows an electrical connector 1 structure according to the third embodiment of the present invention. In the present embodiment, the shape of the female terminal 1a of the power supply connector 1 is changed, and the other end side of the metal plate material constituting the female terminal 1a is further extended from the claw portion 1h and curved in a substantially C shape. A leaf spring-like second spring portion 17 'is formed. In this way, instead of providing the coil spring 17, the spring mechanism for applying a pressure contact force to the female terminal 1 a has a double leaf spring structure, so that the spring force can be increased. Further, since the second spring portion 17 'is provided integrally with the female terminal 1a, the same effect can be obtained with a simple configuration.

  FIG. 6 shows the structure of the electrical connector 1 according to the fourth embodiment of the present invention. In the present embodiment, the female terminal 1a of the power supply connector 1 is divided into a plurality of members, and the plate material 18 to be the caulking portions 1c and 1d is separated and coupled to the lower terminal 1e of the terminal portion. The plate member 19 that becomes the portion 1h is separated and coupled to the upper terminal 1f of the terminal portion. As a coupling method, for example, rivets, welding and the like can be employed. At this time, the material of each member may be changed.

  In each of the above embodiments, only the example in which the terminal of the electrical connector C is one pole is shown, but the female terminal 1a of the power feeding connector 1 and the male terminal 2a of the power receiving connector 2 are arranged in parallel or in parallel, respectively. It can also be composed of multiple poles.

  In each of the embodiments described above, the control valve using an electromagnetic solenoid as an actuator has been described. However, it can be applied to a control valve using a piezo stack as an actuator instead of the electromagnetic solenoid. The present invention is suitably used for an electric connector including a power receiving connector directly connected to a control valve using such an actuator and a power supply connector on the harness side, and achieves both assembling property and slip suppression by impact acceleration. The present invention can also be suitably used for an electrical connector directly connected to an in-vehicle device such as a diesel engine incorporating a control valve or a fuel injection device for a gasoline engine.

It is sectional drawing which shows the electrical connector structure which becomes 1st Embodiment of this invention, (a) is the state before fitting of a power feeding connector and a receiving connector, (b) is at the time of fitting of a feeding connector and a receiving connector. (C) is a figure which shows the state after fitting with a power feeding connector and a receiving connector. 1 is an overall configuration diagram of an electronically controlled fuel injection pump equipped with an electrical connector of the present invention. It is the sectional view on the AA line of FIG. It is sectional drawing which shows the electrical connector structure which becomes 2nd Embodiment of this invention. It is sectional drawing which shows the electrical connector structure which becomes 3rd Embodiment of this invention. It is sectional drawing which shows the electrical connector structure which becomes 4th Embodiment of this invention. It is sectional drawing which shows the conventional electrical connector structure.

Explanation of symbols

B Engine block C Electric connector E Diesel engine H Engine head V Electromagnetic control valve 1 Power supply connector 11 Connector housing 12 Inner cylinder 13 Restriction part 14 Wire harness 15 Notch 1a Female type terminal 1b Wire waterproof rubber 1e Lower terminal 1f Upper terminal 1g Spring part 1h Claw part 1i Connector waterproof rubber 1j Sleeve 1m Through hole 1n Notch 2 Power receiving connector 21 Connector housing 2a Male terminal 2b Cylindrical part 2c Bottom part 2d Protrusion part for retaining

Claims (2)

It consists of a power feeding connector and a power receiving connector. At the same time as fitting the connector housings of both connectors, the male terminal provided on one of them is inserted into the female terminal provided on the other, and the spring mechanism provided on the female terminal is used. In an electrical connector that is brought into pressure contact with the male terminal and electrically coupled thereto,
The insertion of the male terminal restricts the application of the pressure contact force by the spring mechanism, and when the insertion is completed, provides a pressure contact force variable mechanism that releases the restriction and increases the contact pressure between the male terminal and the female terminal ,
The female terminal includes a terminal portion that contacts the male terminal and maintains electrical connection, and a spring portion that biases the terminal portion toward the male terminal and applies a pressure contact force.
The variable pressure contact mechanism includes a claw portion provided integrally with the terminal portion of the female terminal, and a regulation portion that reduces the biasing force of the spring portion by contacting the claw portion. A pressure contact force of the spring portion acting on the terminal portion when the terminal is inserted is reduced, and a holding member for holding the female terminal is inserted in the insertion direction of the male terminal in the connector housing on the female terminal side. Provided to be slidable, and when the insertion of the male terminal is completed, the holding member slides so that the restriction part is separated from the claw part and the restriction of the pressure contact force to the terminal part is released. An electrical connector featuring. A wire waterproof rubber is disposed between the power supply connector and the wire harness, a connector waterproof rubber is disposed between the power supply connector and the connector housing of the power receiving connector, and the holding member includes the wire waterproof rubber, the connector waterproof rubber and the connector. The electrical connector according to claim 1, wherein the electrical connector is loaded in an airtight chamber surrounded by the housing .

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