JP2009234392A - Electricity feeding control device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electricity feeding control device enhancing an assembling property. <P>SOLUTION: A relay 10 and respective print wiring boards 21, 22 are fixed to an intermediate body 4 respectively to constitute an intermediate block IB, and respective cables PC, CC are retained to the intermediate block IB through a bushing 33 respectively. After the respective bushings 33 are mounted to the intermediate block IB constituted as mentioned above respectively, a body 31 and a cover 33 are bonded to constitute a housing 3. The assembling property is enhanced as compared with a case where the relay 10, the respective print wiring boards 21, 22, the respective bushings 33 and the respective cables PC, CC are individually fixed to the body 31 and the cover 32. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a power supply control device.

  Conventionally, as shown in FIG. 12, cables CC and PC (FIG. 12) are respectively connected to an automobile side plug CP connected to an automobile and a power source side plug PP connected to an external power source such as a commercial 100V AC power source. 13), and a power supply control device 1 that controls power supply from a power source to an automobile is provided (see, for example, Patent Document 1). The power supply control device 1 is used to supply power to a charging circuit (not shown) for charging a battery included in a hybrid vehicle or an electric vehicle.

  More specifically, the power supply control device 1 includes a voltage-side electrode conductive path (hereinafter referred to as a “voltage-side line”) L1 and a ground-side electrode conductive path (hereinafter “ And a grounding electrode conductive path (hereinafter referred to as a “ground line”) L3. Furthermore, the relay 10 inserted in the voltage side line L1 and the ground side line L2 respectively to turn on / off the power supply from the power source to the automobile, and the conductive paths L1 to L3 described above are separately provided conductive paths (hereinafter referred to as the conductive paths). The control circuit 12 is connected to the vehicle via the L4 and controls the relay 10 to be turned on and off according to the control signal transmitted from the vehicle via the signal line L4, and the relay 10 and the power source. The power supply circuit 11 is connected to the voltage side line L1, the ground side line L2, and the ground line L3 between the side plug PP and generates the power supply for the control circuit 12.

  Further, a zero-phase current transformer ZCT is provided between the relay 10 and the power supply side plug PP so as to surround the voltage side line L1 and the ground side line L2 and connected to the control circuit 12. The control circuit 12 detects the leakage based on the induced current induced in the zero-phase current transformer ZCT and controls the relay 10 to be turned off when the leakage is detected. That is, the control circuit 12 is also a leakage detection circuit. Since the relay 10, the power supply circuit 11, and the control circuit 12 as described above can be realized by a known technique, detailed illustration and description thereof are omitted.

  As shown in FIG. 13, the power supply control device 1 includes a first printed wiring board 21 on which the power supply circuit 11 is mounted, a second printed wiring board 22 on which the control circuit 12 is mounted, the relay 10, and the first A housing 3 that houses the printed wiring board 21 and the second printed wiring board 22 is provided.

The housing 3 includes a body 31, a cover 32 that is coupled to the body 31 so as to form a space between the body 31 and the relay 10, the first printed wiring board 21, and the second printed wiring board 22. Consists of. The housing 3 has a cable (hereinafter referred to as “power supply side cable”) PC provided with a power supply side plug PP at one end and a cable (hereinafter referred to as “vehicle side” provided with an automobile side plug CP at one end. Called “cable”.) CCs are respectively introduced through the bushings 33.
JP 2000-354332 A

  Conventionally, the conductive path that connects the printed wiring boards P1 and P2 and the conductive path that connects the second printed wiring board P2 and the relay 10 are each configured by a flexible electric wire EW. In addition, the first printed wiring board P1 and the relay 10 are fixed to the body 31, and the second printed wiring board P2 is fixed to the cover 32.

  However, in the above conventional configuration, when the body 31 and the cover 32 are joined at the time of manufacture, the electric wire EW is easily sandwiched between the body 31 and the cover 32, and the assemblability is low.

  The present invention has been made in view of the above-described reasons, and an object thereof is to provide a power supply control device with improved assemblability.

  The invention of claim 1 is a power supply control device for controlling power supply from an external AC power source to a vehicle, and is connected to a voltage side input line connected to a voltage side electrode of the AC power source and a ground side electrode of the AC power source. Electrically connected to the grounded input line, the voltage output line connected to the input terminal of the automobile voltage side pole, and the ground side output line connected to the input terminal of the automobile ground side pole, respectively. A relay for turning on and off the electrical connection between the voltage side input line and the voltage side output line, and the electrical connection between the ground side input line and the ground side output line, and a signal line through which a control signal from the vehicle is transmitted Is electrically connected to the control circuit for controlling on / off of the relay according to the control signal transmitted through the signal line, and the voltage side input line and the ground side input line, respectively, and the voltage. Side input line and ground side input line A power supply circuit that generates power for the control circuit using the supplied power, each circuit component that constitutes the control circuit, each circuit component that constitutes the power supply circuit, and a relay are each fixed to constitute a middle block There is a power supply side cable insertion hole through which a power supply side cable including a middle body, a voltage side input line and a ground side input line is inserted, and an automobile side cable including a voltage side output line, a ground side output line and a signal line. A cylindrical main body having a vehicle-side cable insertion hole to be inserted and made of a flexible material and interposed between the inner peripheral surface of the power-side cable insertion hole and the power-side cable. And a power supply side bushing having a pair of flanges protruding from the outer peripheral surface of the main body portion and covering the power supply side cable insertion hole when viewed from the axial direction of the main body portion, and made of a flexible material. A cylindrical main body portion interposed between the inner peripheral surface of the cable insertion hole and the automobile side cable, and an automobile side cable insertion hole that protrudes from the outer peripheral surface of the main body portion and is viewed from the axial direction of the main body portion. A vehicle-side bushing having a pair of flanges to cover, the housing is provided with a housing recess in which at least a part of the middle block is housed and the middle block is fixed, a power supply side cable insertion hole, and a vehicle side cable A power supply side bushing holding portion for holding a power supply side bushing; It has an automobile side bushing holding part which holds a side bushing.

  According to the present invention, each circuit component constituting the control circuit, each circuit component constituting the power supply circuit, and the relay are fixed to the middle body to constitute the middle block, and the middle block is provided with the power supply side bushing. Since the power cable is held and the car cable is held via the car bushing and the middle block is fixed to the body, the cover can be joined to the body to form the housing. Compared with the case where the parts, the relay, the power supply side bushing and the power supply side cable, and the vehicle side bushing and the vehicle side cable are individually fixed to the body and the cover, the assemblability is improved.

  The invention according to claim 2 is the invention according to claim 1, wherein the ring is made of a flexible material, is elastically deformable to increase the inner diameter, and is sandwiched between the body and the cover so as to surround the storage recess. And an O-ring that closes a gap between the body and the cover, and the body has a hooking convex portion with which an inner peripheral surface of the O-ring elastically contacts.

  According to the present invention, the O-ring can be easily sandwiched between the body and the cover by elastically contacting the inner peripheral surface of the O-ring with the hooking projection and then coupling the cover to the body.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the body communicates with the storage recess and a power supply side notch that forms a power supply side cable insertion hole between the body and the cover. A car-side notch that forms a car-side cable insertion hole between the cover and the cover, and the inner peripheral surface of the power-supply-side notch is provided with a biting protrusion that bites into the outer peripheral surface of the main body of the power-supply-side bushing, The inner peripheral surface of the car-side notch is provided with a biting convex portion that bites into the outer peripheral surface of the main body of the car-side bushing.

  According to this invention, compared with the case where a biting convex part is not provided, watertightness can be improved.

  According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, in the middle body, the power supply side bushing holding portion sandwiches the main body portion of the power supply side bushing, and the vehicle side bushing holding portion is the vehicle side bushing. The power supply side bushing holding portion is provided with a biting convex portion that bites into the outer peripheral surface of the power supply side bushing main body portion, and the vehicle side bushing holding portion is provided with the body portion of the vehicle side bushing. A biting convex portion for biting into the outer peripheral surface is provided.

  According to the present invention, the holding strength of the middle body against the power supply side bushing and the automobile side bushing can be improved as compared with the case where no biting protrusion is provided.

  According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects, the shape of the opening of the storage recess is point-symmetric, and the inner surface of the storage recess of the body is formed on the surface of the cover that is the inner surface of the housing There is a pinching protrusion that sandwiches the relay between the cover and the surface of the middle block, and the cover is rotated 180 ° with respect to the correct direction when viewed from the direction perpendicular to the opening of the storage recess. It is characterized by having a blocking portion that abuts against the pinching convex portion and prevents the cover and the body from being combined when they are to be combined.

  According to the present invention, compared to the case where no pinching convex portion is provided, the vibration of the relay with respect to the housing and in the direction in which the relay is pinched between the pinching convex portion and the body is suppressed. In addition, when the cover is connected to the body in the wrong direction, the cover and the body are prevented from being connected by the blocking part coming into contact with the pinching projection, so the cover and the body are connected in the wrong direction. Can be prevented.

  According to a sixth aspect of the present invention, in the invention according to any one of the first to fifth aspects, the potting material is filled in the housing recess to such an extent that at least each circuit component constituting the power supply circuit is sealed. It is characterized by being.

  According to the present invention, the waterproof property and the insulating property are improved as compared with the case where the potting material is not filled in the storage recess.

  According to the first aspect of the present invention, each circuit component constituting the control circuit, each circuit component constituting the power supply circuit, and the relay are fixed to constitute the middle block, and the middle body holding each bushing is provided. Therefore, the assembling property is improved as compared with the case where each circuit component, the relay, the power supply side bushing and the power supply side cable, and the vehicle side bushing and the vehicle side cable are individually fixed to the body and the cover.

  According to the second aspect of the present invention, the body and the cover are sandwiched between the body and the cover so as to be elastically deformed so as to increase the inner diameter and to enclose the storage recess. O-ring that closes the gap between the body and the body has a hooking convex part with which the inner peripheral surface of the O-ring is elastically contacted. The O-ring can be easily sandwiched between the body and the cover.

  According to a third aspect of the present invention, the body is connected to the power supply side notch that communicates with the housing recess and forms a power supply side cable insertion hole between the body and the vehicle side cable between the cover and the housing recess. There is an automobile side notch that forms an insertion hole, and the inner peripheral surface of the power supply side notch is provided with a biting convex portion that bites into the outer peripheral surface of the main body part of the power supply side bushing, and the inner peripheral surface of the automobile side notch Since the biting convex part which bites into the outer peripheral surface of the main body part of the automobile side bushing is provided, the water tightness can be improved as compared with the case where no biting convex part is provided.

  According to the invention of claim 4, in the middle body, the power supply side bushing holding part is shaped to sandwich the main body part of the power supply side bushing, and the automobile side bushing holding part is shaped to sandwich the body part of the automobile side bushing, The power supply side bushing holding part is provided with a biting convex part that bites into the outer peripheral surface of the main part of the power supply side bushing, and the car side bushing holding part is provided with a biting convex part that bites into the outer peripheral surface of the main body part of the car side bushing Therefore, the holding strength of the middle body against the power supply side bushing and the automobile side bushing can be improved as compared with the case where no biting protrusion is provided.

  According to the invention of claim 5, the shape of the opening of the storage recess is point-symmetric, and the sandwiching protrusion that sandwiches the relay between the inner surface of the housing recess and the inner surface of the housing in the cover. When the cover is protruding from the middle and the cover is connected to the body in a direction rotated 180 ° with respect to the correct direction when viewed from the direction orthogonal to the opening of the housing recess, Since there is a blocking portion that prevents the cover and the body from coming into contact with each other, the relay is oscillated between the protruding portion and the body due to the vibration of the relay with respect to the housing as compared with the case where the holding protruding portion is not provided. Vibration in the direction is suppressed. In addition, when the cover is connected to the body in the wrong direction, the cover and the body are prevented from being connected by the blocking part coming into contact with the pinching projection, so the cover and the body are connected in the wrong direction. Can be prevented.

  According to the sixth aspect of the present invention, the potting material is filled in the storage recess to such an extent that at least each circuit component constituting the power supply circuit is sealed. Water resistance and insulation are improved as compared with the case of no filling.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  In the present embodiment, as shown in FIGS. 2A to 2D, a housing 3 having an elongated rectangular parallelepiped body portion 3 a and support portions 3 b respectively protruding at both ends in the longitudinal direction of the body portion 3 a. Is provided. The support portion 3b is provided with a dharma hole 3c, and the housing 3 is supported by being suspended on a wall surface or the like by a pin or the like being hooked on the dharma hole 3c. Hereinafter, the vertical and horizontal directions are based on FIG. 2A, and the horizontal direction in FIG. That is, the longitudinal direction of the housing 3 is referred to as the vertical direction. The power supply side cable PC is introduced from the upper side of the housing 3, and the automobile side cable CC is introduced from the lower side of the housing 3. Note that the above expression of the direction is merely for convenience of explanation, and does not necessarily match the direction in the actual use state.

  Further, the present embodiment has the same circuit configuration as shown in FIG. That is, the relay 10 inserted in the voltage side line L1 and the ground side line L1 to turn on and off the power supply from the power supply side plug PP to the automobile side plug PC, and connected to the automobile via the signal line L4 and from the automobile. A control circuit 12 that controls on / off of the relay 10 according to a control signal transmitted through the signal line L4, and a voltage side line L1, a ground side line L2, and a ground line L3 are connected to the power source side of the relay 10 respectively. And a power supply circuit 11 for generating a power supply for the control circuit 12.

  Further, as shown in FIG. 1, a first printed wiring board 21 on which the power supply circuit 11 is mounted, a second printed wiring board 22 on which the control circuit 12 is mounted, a synthetic resin molded product, the relay 10 and each print An intermediate body 4 that holds the wiring boards 21 and 22 and constitutes the intermediate block IB is provided. The second printed wiring board 22 is connected to a zero-phase current transformer ZCT for detecting leakage. The 2nd printed wiring board 22, the 1st printed wiring board 21, and the zero phase current transformer ZCT are electrically connected, for example via a flexible electric wire (not shown).

  The housing 3 is a rectangular parallelepiped shape in which a housing recess 30 in which the middle block IB is housed is opened in the front and a support portion 3b is provided, and a rear surface is opened. And a cover 32 for closing. Each of the body 31 and the cover 32 is made of a synthetic resin molded product, for example.

  The opening of the storage recess 30 has a rectangular shape that is long in the vertical direction. In the body 31, when viewed from the front, in the vicinity of the four corners of the storage recess 30, cylindrical screwing portions 31a with screw holes opened on the front surface are respectively provided. Each projectes forward. Screw insertion holes 32a are respectively provided at the four corners of the cover 32 when viewed from the front, and the four screws are inserted into the screw insertion holes 32a of the cover 32 and screwed into the screwing portions 31a of the body 31. The cover 32 is screwed to the body 31 by the screw S1. In FIG. 2A, the screw insertion hole 32a is not shown.

  In the body 31, insertion notches 30 a that are open to both the upper and lower sides and the front and communicate with the inside and the outside of the storage recess 30 are provided on the upper and lower sides of the storage recess 30. In the state where the body 31 and the cover 32 are coupled to each other, the power supply side cable insertion hole (not shown) through which the power supply side cable PC is inserted is formed between the upper insertion cutout 30a (the power supply side cutout in the claims) and the cover 32. An automobile side cable insertion hole (not shown) through which the automobile side cable CC is inserted is formed between the lower insertion notch 30a (the automobile side notch in the claims) and the cover 32.

  Furthermore, in order to close the gap between the body 31 and the cover 32, the cables PC and CC are respectively inserted into bushings 33 made of a flexible material. Each bushing 33 protrudes outward from the outer peripheral surface of the main body portion 33a so that the body 31 and the cover 32 surround the main body portion 33a. It has a pair of collar parts 33b and 33c which pinch | interpose in a direction. Further, for each bushing 33, in order to make it easier to bend the main body portion 33a, the outer peripheral surface of the main body portion 33a that protrudes outward in the vertical direction from the flange portion 33b has an annular shape extending in the circumferential direction. The plurality of grooves 33d are arranged in the axial direction (four in the figure). Here, as shown in FIG. 3, on the inner surface of each insertion notch 30 a, a biting convex portion 30 b that projects into the outer peripheral surface of the main body portion 33 a of the bushing 33 is provided. The biting protrusion 30b extends, for example, over the entire length in the circumferential direction of the insertion notch 30a, and the cross-sectional shape in a cross section parallel to the axial direction (that is, the vertical direction) of the main body 33a of the bushing 33 is triangular. It is a ridge. That is, each biting protrusion 30b bites into the outer peripheral surface of the main body portion 33a of the bushing 33, thereby improving water tightness (waterproofness). In particular, in this embodiment, since the screwing portion 31a of the body 31 and the screw insertion hole 32a of the cover 32 are provided at the upper and lower end portions in the vicinity of the insertion notch 30a, the cover 32 is screwed to the body 31. Each biting protrusion 30b is easy to bite into the main body 33a of the bushing 33 when the screw S1 to be fastened is tightened.

  In addition, on both upper and lower surfaces of the body 31 and the cover 32, recesses 31b and 32b into which the flanges 33b outside the bushing 33 are fitted are provided. The outer flange 33b of each bushing 33 has an asymmetrical shape when viewed in the vertical direction (that is, the axial direction of the main body 33a), and the recesses 31b and 32b are connected when the body 31 and the cover 32 are joined. The dimension of the recess to be formed is a dimension that is only slightly larger than the flange 33b of the bushing 33. That is, by fitting the flange portion 33b into the recesses 31b and 32b, the rotation of the bushing 33 relative to the body 31 and the cover 32 and the rotation of the main body portion 33a around the axis are prohibited.

  Furthermore, as shown in FIG. 4, an annular O-ring 34 made of a flexible material such as synthetic rubber is interposed between the body 31 and the cover 32. On the left and right sides of the housing recess 30 on the front end surface of the body 31, hook projections 31c are provided in front of each other so that the inner peripheral surface of the O-ring 34 is in elastic contact. Each hooking convex portion 31c has a U-shaped cross section that extends along the opening of the housing concave portion 30 and has both ends facing the insertion notches 30a. Furthermore, ring grooves 31d in which a part of each O-ring 34 is accommodated are provided at two locations on the outside of the hooking protrusion 31c when viewed from the front. The rear end of the cover 32 has a shape surrounding the catching convex portion 31c, and the O-ring 34 is sandwiched between the rear end surface (the lower surface in FIG. 4) of the cover 32 and the inner surface of the ring groove 31d of the body 31. . Further, the front end (the upper end in FIG. 4) of the hooking convex portion 31 c is also in contact with the cover 32, but the distance between the inner surface of the ring groove 31 d and the lower end of the cover 32 when the front end of the hooking convex portion 31 c is in contact with the cover 32. Is smaller than the front and rear dimensions of the O-ring 34 when not elastically deformed, and the O-ring 34 is elastically deformed between the rear end surface of the cover 32 and the ring groove 31d of the body 31, and the body 31 And the cover 32, the gap between the body 31 and the cover 32 is closed. In the present embodiment, since the hooking protrusions 31c are provided as described above, at the time of assembly, the O-ring 34 surrounds the two hooking protrusions 31c so as to surround the two hooking protrusions 31c. If the body 31 and the cover 32 are coupled to each other after the ring 34 is hooked, the O-ring 34 can be easily interposed between the body 31 and the cover 32, compared with the case where the hooking protrusion 31c is not provided. Assembling is improved.

  Next, the middle block IB will be described. As shown in FIG. 5, the middle body 4 includes a relay holding part 41 that holds the relay 10 and a wiring board holding part 42 that holds the printed wiring boards 21 and 22, with the wiring board holding part 42 on the upper side. A cable base 43 that holds one cable PC and CC at each of the upper and lower ends and a bushing holding part 44 that holds one bushing 33 are respectively connected to the upper and lower ends. It has a structure provided as the outside in the vertical direction.

  A relay holding hole 41a through which the relay 10 is inserted is provided to the left and right of the relay holding portion 41. The relay holding portion 41 holds the relay 10 in such a manner as to sandwich the relay 10 from both the upper and lower sides and the front and rear sides. To do. Here, as shown in FIGS. 6 and 7, the rear surface of the cover 32 (the upper surface in FIG. 6 and the lower surface in FIG. 7) enters the right side of the relay 10 and the rightward inner surface of the storage recess 30. A pinching protrusion 32c is provided between the two so as to project the relay 10 therebetween. That is, in the present embodiment, the relay 10 is limited in displacement in the left-right direction with respect to the housing 3 by being sandwiched between the above-described sandwiching projection 32c and the rightward inner surface of the housing recess 30. The rattling of the relay 10 is suppressed as compared with the case where the sandwiching protrusion 32c is not provided. Further, the position of the sandwiching protrusion 32c is intended to attach the cover 32 to the body 31 in the wrong direction rotated 180 ° when viewed from the front with respect to the correct direction (hereinafter referred to as “reverse assembly”). In such a case, the second printed wiring board 22 is in contact with the second printed wiring board 22 to prevent reverse assembly. In other words, in the present embodiment, reverse assembly is prevented by the sandwiching convex portion 32c and the second printed wiring board 22, and the second printed wiring board 22 constitutes a blocking portion in the claims.

  In addition, the wiring board holding portion 42 is provided with a wiring board housing recess 42a in which the first printed wiring board 21 is housed on the front surface, and a front end portion thereof is inserted into the second printed wiring board 22 so as to be connected to the second printed wiring board. Positioning columns 42b for positioning the plate 22 and screwing columns 42c to which the second printed wiring board 22 is screwed by opening screw holes in the front are respectively arranged in front of the square apexes when viewed from the front. Projected to Here, the positioning columns 42b and the screwing columns 42c are arranged diagonally to each other. Each positioning column 42 b and each screwing column 42 c both contact the rear surface of the second printed wiring board 22 to support the second printed wiring board 22. The second printed wiring board 22 is positioned with respect to the middle body 4 by inserting the front end of the positioning post 42b, and is screwed and fixed to the middle body 4 with a screw S2 screwed into the screwing post 42c. . Here, in each positioning column 42b and each screwing column 42c, the surface contacting the rear surface of the second printed wiring board 22 is positioned forward of the front surface of the relay holding portion 41, and the second printed wiring The lower end portion of the plate 22 protrudes below the wiring board holding portion 42 and is positioned on the front side of the relay 10.

  Further, the outer peripheral portion of the bottom surface of the wiring board housing recess 42a is connected to the inner peripheral surface of the wiring board housing recess 42a and contacts the outer peripheral edge of the rear surface of the first printed wiring board 21. A support base 42d for supporting is projected, and a cylindrical screwing portion 42e with a screw hole opened on the front surface is projected forward on the bottom surface of the wiring board housing recess 42a. The first printed wiring board 21 is screwed and fixed to the middle body 4 by a screw S3 that passes through the first printed wiring board 21 and is screwed into the screwing portion 42e.

  The middle block IB is made of, for example, a metal plate and is screwed to the cable base 43 of the middle body 4 to hold two cables PC and CC between the cable base 43 and two tension stoppers. Metal fittings 5a and 5b are provided. That is, even when the cables PC and CC are pulled from the outside of the housing 3, the tensile force is stopped by the tension stoppers 5a and 5b, so that the electrical connection in the housing 3 is prevented from being damaged. More specifically, in detail, the cable bases 43 are respectively disposed in such a manner that the cable grooves 43a are opened on both the upper and lower sides and the front side, and the cables PC and CC are placed on the left and right sides of the cable grooves 43a. And two screw holes 43b opened forward. Further, each of the tension stoppers 5a and 5b is bent so that the central portion in the left-right direction bulges forward with the thickness direction in the front-rear direction, and screw insertion holes 51a are provided in the front-rear direction at the left and right ends. The main body 51 is provided. That is, each of the tension stoppers 5a and 5b is attached to the middle body 4 by two screws S4 that are inserted into the screw insertion holes 51a of the main body 51 and screwed into the screw holes 43b of the cable base 43, respectively. Screwed and fixed.

  Further, the lower tension stopper 5b corresponding to the automobile side cable CC is composed of only the main body 51, whereas the upper tension stopper 5a corresponding to the power supply side cable PC is as shown in FIG. Has a structure for positioning the zero-phase current transformer ZCT. That is, the upper tension stopper 5a is rearwardly bent by a connecting portion 52 projecting downward from the left and right end portions of the main body portion 51 and the inner end in the left-right direction of the lower end portion of each connecting portion 52. A radial positioning portion 53 protruding and having a thickness direction directed in the left-right direction, and an axial positioning portion 54 protruding rearward by bending from the lower end of each connecting portion 52 and having a thickness direction directed in the vertical direction. Have. The zero-phase current transformer ZCT is moved in the left-right direction with respect to the middle body 4 in the state where the electric wire of the voltage side line L1 and the electric wire of the ground side line L2 included in the power supply side cable PC are inserted. Restricted by the radial positioning portion 53, the upward movement with respect to the middle body 4 is restricted by the cable base 43, and the downward movement with respect to the middle body 4 is restricted by the axial positioning portion 54 of the tension stopper 5a. The rattling of the zero-phase current transformer ZCT is suppressed. As described above, in the present embodiment, the zero-phase current transformer ZCT is positioned with respect to the middle body 4 by the tension stopper 5a. Therefore, when a component for positioning the zero-phase current transformer ZCT is separately provided. Compared with this, the number of parts is reduced and the manufacturing cost is reduced.

  Further, each bushing holding portion 44 has a flat shape with the thickness direction directed in the vertical direction, and is connected to the cable base 43 only at the rear end portion and has a gap between the cable base 43 in other portions. The cable base 43 is supported on the outer side in the vertical direction so as to be vacant. Each bushing holding portion 44 is provided with a semicircular insertion notch 44a that is open to both the upper and lower sides and the front and through which the main body portion 33a of the bushing 33 is inserted vertically. That is, each bushing holding portion 44 has a shape that sandwiches the body portion 33a of the bushing 33 from both the left and right sides. In addition, each bushing 33 has a flange portion 33e that sandwiches the bushing holding portion 44 of the middle body 4 from the vertical direction between the bush portion 33c disposed inside the housing 3 from the outer peripheral surface of the main body portion 33a. It protrudes outward. That is, each bushing 33 is held by the middle body by sandwiching the bushing holding portion 44 between the two inner flange portions 33c and 33e in a state where the main body portion 33a is inserted through the insertion notch 44a. Yes. Further, as shown in FIGS. 9 and 10, in each bushing holding portion 44, a biting convex portion 44 b that projects into the outer peripheral surface of the main body portion 33 a of the bushing 33 protrudes from the inner peripheral surface of the insertion notch 44 a. ing. The biting convex portion 44b extends, for example, over the entire length in the circumferential direction of the insertion notch 44a, and the cross-sectional shape in a cross section parallel to the axial direction (that is, the vertical direction) of the main body portion 33a of the bushing 33 is triangular. It is a ridge. In other words, the biting convex portion 44b bites into the outer peripheral surface of the main body portion 33a of the bushing 33, so that the holding strength of the middle body 4 with respect to the bushing 33 is improved as compared with the case where the biting convex portion 44b is not provided.

  According to the above configuration, the relay 10 and the printed wiring boards 21 and 22 are fixed to the middle body 4 to form the middle block IB, and the cables PC and CC are respectively connected to the middle block IB with the bushing 33. Since the housing 3 can be configured by connecting the cover 32 to the body 31 and fixing the middle block IB to the body 31, the relay 10, the printed wiring boards 21 and 22, Compared with the case where the bushings 33 and the cables PC and CC are individually fixed to the body 31 and the cover 32, the assemblability is improved.

  Further, the potting material PM may be filled in the storage recess 31 as shown in FIG. The filling amount is set such that, for example, the first printed wiring board 21 and each circuit component mounted on the first printed wiring board 21 are sealed with the potting material PM, respectively. If this structure is employ | adopted, waterproofness and insulation will each improve compared with the case where the potting material PM is not filled in the storage recessed part 31. FIG.

It is a disassembled perspective view which shows embodiment of this invention. (A)-(d) shows the same as above, (a) is a front view, (b) is a right side view, (c) is a rear view, and (d) is a bottom view. It is sectional drawing which shows the principal part of a body same as the above. It is sectional drawing which shows the O-ring vicinity. It is a perspective view which shows a middle body same as the above. It is a perspective view which shows a cover same as the above. It is sectional drawing containing the pinching convex part and relay of a cover in the same as the above. It is a perspective view which shows the tension | tensile_strength metal fitting by the side of a power supply same as the above. It is a perspective view which shows the principal part of a middle body same as the above. It is a front view which shows the principal part of a middle body same as the above. It is a perspective view which shows the principal part of a state with the potting material filled in the housing recessed part in the same as the above. It is a circuit block diagram which shows an example of an electric power feeding control apparatus. It is explanatory drawing which shows the structure of a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Power supply control apparatus 3 Housing 4 Medium body 10 Relay 11 Power supply circuit 12 Control circuit 22 2nd printed wiring board (blocking part in a claim)
30 storage recess 30a insertion notch (power supply side notch and car side notch in claims)
30b Biting convex part 31 Body 32 Cover 33 Bushing 34 O-ring 44 Bushing holding part IB Medium block

Claims (6)

A power supply control device that controls power supply to an automobile from an external AC power source,
A voltage side input line connected to the voltage side pole of the AC power source, a ground side input line connected to the ground side pole of the AC power source, a voltage side output line connected to the input terminal of the voltage side pole of the automobile, It is electrically connected to the ground side output line connected to the input terminal of the ground side pole of the automobile, and the electrical connection between the voltage side input line and the voltage side output line, as well as the ground side input line and the ground side output. Relays for turning on and off the electrical connection with the wires,
A control circuit that is electrically connected to a signal line through which a control signal from an automobile is transmitted and controls the relay on and off in accordance with the control signal transmitted through the signal line;
A power supply circuit that is electrically connected to the voltage-side input line and the ground-side input line, respectively, and generates power for the control circuit using power supplied via the voltage-side input line and the ground-side input line;
Each body part constituting the control circuit and each circuit part constituting the power supply circuit and the relay are respectively fixed, and the middle body constituting the middle block,
A power supply side cable insertion hole through which a power supply side cable including a voltage side input line and a ground side input line is inserted, and an automobile through which a vehicle side cable including a voltage side output line, a ground side output line and a signal line is inserted. A housing having a side cable insertion hole and housing the middle block;
Made of a flexible material, the cylindrical main body part interposed between the inner peripheral surface of the power supply side cable insertion hole and the power supply side cable, and each projecting from the outer peripheral surface of the main body part from the axial direction of the main body part A power supply side bushing having a pair of flanges covering the power supply side cable insertion hole as seen;
Made of a flexible material, the cylindrical main body part interposed between the inner peripheral surface of the automobile side cable insertion hole and the automobile side cable, and each projecting from the outer peripheral surface of the main body part from the axial direction of the main body part An automobile side bushing having a pair of flanges covering the automobile side cable insertion hole as seen,
The housing is provided with a housing recess in which at least a part of the middle block is housed and the middle block is fixed, and a power supply side cable insertion hole and an automobile side cable insertion hole are formed between the body and the body. A cover that is coupled to the body so as to close the recess,
The middle body has a power supply side bushing holding part for holding a power supply side bushing and an automobile side bushing holding part for holding an automobile side bushing. An O-ring that is made of a flexible material and can be elastically deformed to increase the inner diameter, and is sandwiched between the body and the cover so as to surround the housing recess and closes the gap between the body and the cover With
The power supply control device according to claim 1, wherein the body has a hooking convex portion with which an inner peripheral surface of the O-ring elastically contacts. The body includes a power supply side notch that communicates with the storage recess and forms a power supply side cable insertion hole with the cover, and an automobile side cutout that communicates with the storage recess and forms an automobile side cable insertion hole between the cover and the cover. Have
The inner peripheral surface of the power supply side notch is provided with a biting projection that bites into the outer peripheral surface of the main body part of the power supply side bushing, and the inner peripheral surface of the car side cutout is bitten into the outer peripheral surface of the main body part of the car side bushing. The power feeding control device according to claim 1, wherein a convex portion is provided. In the middle body, the power supply side bushing holding part has a shape that sandwiches the main body part of the power supply side bushing, and the automobile side bushing holding part has a shape that sandwiches the main body part of the automobile side bushing,
The power supply side bushing holding part is provided with a biting convex part that bites into the outer peripheral surface of the main part of the power supply side bushing, and the car side bushing holding part is provided with a biting convex part that bites into the outer peripheral surface of the main body part of the car side bushing The power feeding control device according to any one of claims 1 to 3, wherein the power feeding control device is provided. The shape of the opening of the storage recess is point symmetric,
In the cover, on the surface that becomes the inner surface of the housing, a sandwiching convex portion that projects the relay between the inner peripheral surface of the housing concave portion of the body protrudes,
When the cover is to be coupled to the body in a direction rotated by 180 ° with respect to the correct direction when viewed from the direction orthogonal to the opening of the storage recess, the middle block comes into contact with the sandwiched protrusion and comes into contact with the cover and the body. 5. The power supply control device according to claim 1, further comprising a blocking unit that blocks the coupling of the power supply.   6. The potting material is filled in the housing recess to such an extent that at least each circuit component constituting the power supply circuit is sealed. Power supply control device.

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