JP2009284623A - Power supply distribution unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a power supply distribution unit capable of protecting an electric electronic component of the surface of a substrate and a terminal connection portion of the backside of the substrate against interference with the outside when a circuit board assembly before attached on a case falls. <P>SOLUTION: In the power supply distribution unit 1 having an electric connection block 31 on one side and a connector block 15 on the other side which are each configured by mounting an electric electronic component 3 on a circuit board 2 and connecting terminals 16, 36 to both the ends of the circuit board 2, a cover-like bus bar 4 for covering the electric electronic component 3 is disposed on the circuit board 2 side. In the power supply distribution unit 1 having the electric connection block 31 on one side and the connector block 15 on the other side which are each configured by penetrating and connecting a terminal 7 of the electric electronic component 3 to the circuit board 2 and penetrating and the connecting terminals 16, 36 on both ends of the circuit board 2, a plurality of long bus bar terminals 5 are disposed in series oppositely to the circuit board surface 2b on the penetration side of each of the terminals 7, 16. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a power distribution unit in which electrical and electronic parts are mounted on a circuit board and upper and lower terminals are soldered to form a fuse block, a connector block, and the like.

  FIG. 6 shows a longitudinal section of one form of a conventional electric junction box mounted on an automobile (see Patent Document 1).

  The electrical connection box 61 is fitted from below into an insulating resin frame 62, two fuse blocks 63 and 64 inserted and locked into the frame from below, and connectors on the lower side of the fuse blocks 63 and 64, respectively. It is provided with mating connectors 65 and 66 to be connected together.

  One fuse block 63 has a fuse mounting portion (not shown) for connecting a blade-type fuse at the top, and the fuse is connected to an electric wire 67 on the mating connector 65 side. The other fuse block 64 accommodates a plurality of fusible links (not shown), and the fusible links are connected to the electric wires 68 on the mating connector 66 side. Both fuse blocks 63 and 64 are connected to each other by a horizontal bus bar (not shown) along the frame 62, and the other side of the fuse block 64 is connected to a power supply line (not shown) from a battery or the like. A partition wall 91 is formed in the frame 62 to partition the fuse blocks 63 and 64. The fuse blocks 63 and 64 are locked to the frame 62 by locking means (arms and protrusions) 76.

  As an electrical junction box other than the above, the thing described in patent document 2, for example is mentioned.

  This electrical junction box is composed of an insulating resin frame, a plurality of cassette blocks mounted in the frame, relays and fuses mounted on the upper part of each cassette block, and upper and lower covers attached to the upper and lower openings of the frame. Each cover is provided. In the electric junction box, for example, power from a battery of an automobile is supplied by an electric wire circuit.

  FIG. 7 shows an example of a circuit board assembly mounted in, for example, an electrical junction box (see Patent Document 3).

In this circuit board assembly 101, a transistor 103, a resistor 104, a capacitor 105, an IC 106, and an LSI 107 as electronic components are mounted on a printed circuit board 102, and a bus bar 109 is connected to a transistor 103 as a power element via an insulator 108. The terminal portion 109a of the bus bar 109 is connected to the printed circuit board 102 by contact, and the connector 110 is disposed at the end of the printed circuit board 102. The power element 103 drives a motor, a solenoid or the like of an automobile like a relay, for example, and the other electronic components 104 to 107 function as control elements. The bus bar 109 also serves as a heat dissipation action for the power element 103.
JP 2006-320147 A (FIG. 3) JP 2007-68274 A (FIGS. 1 to 2) JP-A-5-67889 (FIG. 3)

  FIG. 8 shows another embodiment of the electrical junction box in which a power distribution unit 70 for power distribution inside a frame 69 and a connection block 74 that connects a relay 71, a fuse 72, and a fusible link 73 to the upper part are vertically arranged. FIG. 9A and FIG. 9B show an embodiment of the power distribution unit 70. FIG.

  The power distribution unit 70 is also called power integration. For example, a connector 77 (FIG. 9) at the lower end is connected to the connector 79 of the connection block 74 and the fuse mounting portion 80 via the electric wire 78, and the power supply from the 12V battery of the automobile. Is supplied to the connection block 74 from a connector (not shown) on the lower side of the connection block 74 and supplied to the power distribution unit 70 via the electric wire 78.

  As shown in FIGS. 9A and 9B, the power distribution unit 70 includes a horizontally long case (cover) 82 made of an insulating resin, a circuit board 83 arranged vertically in the case, and a surface mount on the circuit board 83. A plurality of (connected) electrical and electronic parts such as relays 84 and resistors 93, a fuse connection terminal 85, a connector connection terminal 86 projecting upward from the top of the circuit board 83, and the circuit board 83 A connector connecting terminal 87 projecting downward from the lower portion and a connector block main body 88 made of an insulating resin attached to the lower portion of the case 82 are provided.

  The upper and lower terminals 85 to 87 are positioned and fixed through horizontal wall portions 91 and 92 that are screwed to the upper and lower sides of the circuit board 83. A fuse mounting portion 89 and a connector housing 90 are integrally formed on the upper portion of the case 82. Power is supplied from the lower connector block 88 to the load side (not shown) of the automobile.

  However, in the power distribution unit 70 of FIG. 9 described above, in the state of the circuit board assembly (power distribution unit main part) 94 in which the relay 84, the terminals 85 to 87, and the connector block main body 88 are assembled to the circuit board 83. When the operator drops the circuit board assembly 94 when attaching the case 82 or the like, the electrical / electronic components such as the relay 84 on the front surface side of the circuit board 83 or the back surface side of the circuit board 83. There is a concern that the solder connection portions of the terminals 85 to 87 may be damaged or damaged due to interference with the outside.

  In view of the above-described points, the present invention eliminates electrical and electronic components such as a relay on the front side of the board and a terminal solder connection part on the back side of the board even when the circuit board assembly before mounting the case is dropped. It is an object of the present invention to provide a power distribution unit having a structure that does not cause damage due to interference.

  In order to achieve the above object, a power distribution unit according to claim 1 of the present invention has electrical and electronic components mounted on a circuit board, and terminals are connected to both ends of the circuit board, and electrical connection on one end side is achieved. In the power distribution unit including the block and the connector block on the other end side, a cover-like bus bar that covers the electrical and electronic components is disposed on the circuit board side.

  With the above configuration, the electric and electronic parts are safely protected from interference with the outside by the cover-like bus bar. The cover-like bus bar can also act as an electromagnetic shield that covers electrical and electronic parts. The bus bar is connected to the circuit board at the terminal portion, or the terminal portion is arranged on the electrical connection block or the connector block. The “cover shape” refers to a shape having a peripheral wall around the flat plate portion. “Electrical and electronic parts” refers to relays and resistors.

  A power distribution unit according to a second aspect is the power distribution unit according to the first aspect, wherein a gap is formed between the bus bar and the electric / electronic component.

  With the above configuration, the impact force from the outside is absorbed in the gap between the bus bar and the electrical / electronic component, and the propagation of the impact force to the electrical / electronic component is reliably prevented. The bus bar can be deformed by impact force within the gap.

  The power distribution unit according to claim 3 is the power distribution unit according to claim 1 or 2, wherein one terminal portion of the bus bar is connected to the circuit board, and the other terminal portion of the bus bar is disposed in the connector block. It is characterized by that.

  With the above configuration, power is input from the other terminal portion of the bus bar by connector connection, and power is supplied from one terminal portion of the bus bar to the circuit board. The power is supplied from the circuit board to the load side circuit from the connector block via the electrical and electronic parts. The bus bar performs both power input to the circuit board and protection of electrical and electronic parts.

  According to a fourth aspect of the present invention, there is provided a power distribution unit, wherein the terminals of the electrical and electronic components are connected through the circuit board, and the terminals are connected through the both ends of the circuit board. In the power distribution unit configured as described above, a plurality of long bus bar terminals are arranged in parallel to face the circuit board surface on the through side of each terminal.

  With the above configuration, a plurality of long bus bar terminals cover the terminal connection portion of the circuit board and safely protect it from interference with the outside. The terminal connecting portion is a portion in which the terminals of the electrical and electronic parts and the upper and lower terminals of the circuit board penetrate through the circuit board and are connected by solder or the like. The bus bar terminal is preferably set to a length that covers from one end to the other end of the circuit board. The bus bar terminals are preferably through terminals along the circuit board (not connected to the circuit board).

  The power distribution unit according to claim 5 is the power distribution unit according to claim 4, wherein one terminal portion of the bus bar terminal is disposed in the electrical connection block, and the other terminal portion of the bus bar terminal is disposed in the connector block. It is arranged.

  With the above configuration, an electrical component such as a fuse connected to the connector block is energized (connected) from one terminal portion of the bus bar terminal to the load side circuit via the other terminal portion in the connector block. The bus bar terminal is not connected to the circuit board.

  A power distribution unit according to a sixth aspect is the power distribution unit according to the fourth or fifth aspect, comprising the configuration of the power distribution unit according to any one of the first to third aspects.

  With the above configuration, the electrical and electronic components on the front surface side of the circuit board are covered and protected by the cover-like bus bar, and the terminal connection portion on the back surface side of the circuit board is covered and protected by the plurality of bus bar terminals. In addition, the operational effects of the first to third aspects of the invention can be achieved.

  According to the first aspect of the present invention, since the electric and electronic parts of the circuit board are covered with the cover-like bus bar and protected from interference with the outside, for example, the operator drops the power distribution unit without the cover attached. Even when it hits the outside, the electric and electronic parts are safely protected without interfering with the outside, and the power supply reliability of the power distribution unit is improved.

  According to the second aspect of the present invention, since the impact force from the outside is absorbed in the gap between the bus bar and the electrical / electronic component, the propagation of the impact force to the electrical / electronic component is reliably prevented, and the power distribution is performed. The reliability of the power supply of the unit is further improved.

  According to the third aspect of the present invention, both the input operation of the power source to the circuit board and the protection of the electric and electronic parts can be performed by the bus bar, and the structure of the power distribution unit can be simplified and made compact. .

  According to the invention described in claim 4, since the terminal connection portion (solder connection portion) of the circuit board is covered with a plurality of long bus bar terminals and is protected from interference with the outside, for example, an operator covers the cover. Even if a power distribution unit that is not attached is dropped or bumped to the outside, the terminal connection portion of the circuit board is safely protected without interfering with the outside, and the power supply reliability of the power distribution unit is improved.

  According to the fifth aspect of the invention, the plurality of bus bar terminals act as through terminals along the circuit board, and can cope with an increase in circuit specifications (number of circuits) between the electrical connection block and the connector block. .

  According to the sixth aspect of the present invention, the electrical and electronic components on the front surface side of the circuit board are covered and protected by the cover-like bus bar, and the terminal connection portion on the back surface side of the circuit board is covered by the plurality of long bus bar terminals. Because it protects, if the power distribution unit without a cover is dropped or bumped to the outside, both the front and back sides of the circuit board are reliably protected at the same time, further improving the power supply reliability of the power distribution unit .

  1 to 5 show an embodiment of a power distribution unit (power integration) according to the present invention. FIGS. 1 to 2 are views from the front side of a circuit board, and FIGS. FIG. 5 is an external view corresponding to FIG. 2 as seen from the back side of the circuit board.

  As shown in FIG. 1, the power distribution unit 1 covers a relay (electrical and electronic component) 3 arranged on the surface 2a side of the circuit board 2 with a cover-like bus bar 4 to protect it from interference with the outside. As described above, the terminal solder connection portions 6 to 8 disposed on the back surface (circuit board surface on the terminal penetrating side) 2b of the circuit board 2 are covered with a plurality of vertically long bus bar terminals 5 to be protected from interference with the outside. Is.

  As shown in FIG. 1, a plurality of relays 3 (three in this example) are arranged in parallel along the surface of a vertically long circuit board 2, and a cover-like bus bar 4 covers the plurality of relays 3 simultaneously. In the figure, the right and center relays 3 are covered and the left relay 3 is not covered, but it is preferable to extend the bus bar 4 in the lateral direction (horizontal direction) so as to cover all the relays 3.

  The bus bar 4 is made of a single conductive metal plate as a material, and intersects with the horizontally long and vertical front plate portion 9 disposed in parallel near the front surface 3a of each relay 3, and the upper and lower ends of the front plate portion 9. Then, the horizontal upper and lower plate portions 10 and 11 are arranged in parallel and close to each other along the upper and lower surfaces 3 b and 3 c of the relay 3, and at least protrude from the tip of the upper plate portion 10 horizontally. A plurality of (three in this example) tab-shaped terminal portions 12 for connecting the circuit board and the right end of the front plate portion 9 intersecting the side surface (right end surface) 3d of the right end relay 3 A vertical side plate portion (connecting plate portion) 13 is formed extending (projecting) below the lower plate portion 11 so as to intersect the side plate portion 13 and insert a tip portion into the lower connector block 15 ( A wide tab terminal portion (terminal portion) 14 that is housed) is integrally formed.

  In order to increase the rigidity, it is preferable that the lower plate portion 11 of the bus bar 4 is also solder-connected to the circuit board 2 by the lower horizontal tab-like terminal portion (12). The front plate 9 covers the front surface 3a of the relay 3 over the entire area, the upper and lower plates 10 and 11 cover the upper and lower surfaces of the relay 3 with an area of half or less, and the side plate 13 has a smaller area. One side 3d of the relay 3 is covered. When the front side and the upper and lower plate portions 9 to 11 of the bus bar 4 are extended to the left relay 3, a side plate portion (13) is provided so as to cross the left end of the front plate portion (9), and the side plate portion (13 ) To cover the other side 3e of the left relay 3.

  The terminal portion 12 that continues on the same surface as the upper plate portion 10 is solder-connected to the circuit board 2 through the terminals 16 on the front side of the circuit board 2. A part of the plurality of terminal portions 12 of the bus bar 4 may be bent upward in an L shape to form a sandwiching terminal (16) for fuse connection.

  The terminal portion 12 of the bus bar 4 and each terminal portion 16 on the upper side of the front row of the circuit board 2 pass through the through hole of the circuit board 2 (see the terminal connection portion 6 penetrated in FIG. 3), and the back surface 2b of the circuit board 2 A side printed circuit (not shown) or a conductive metal core (not shown) in the middle of the thickness direction of the circuit board 2 is connected.

  Each terminal portion (12) is projected in an L shape on the lower plate portion 11 of the bus bar 4 so as to be accommodated in the connector block 15, or may be projected horizontally and soldered to the circuit board 2. Is possible. The bus bar 4 of this example is fixed to the circuit board 2 by a horizontal terminal portion 12. When the terminal portion 12 is an L-shaped sandwiching terminal (16) or tab terminal, the bus bar 4 is fixed to the upper and lower flange walls 17 and 18 of the circuit board 2.

  The front and upper, lower, left, and right plate portions 9 to 11 and 13 of the bus bar 4 are positioned with gaps on the respective surfaces 3 a to 3 d of the relay 3. It is preferable in order not to tell. In the specification, the front-rear and left-right directions are for convenience of explanation.

  The tab terminal portion 14 of the bus bar 4 is integrally formed on the lower side of the wide plate portion 14a intersecting the side plate portion 13 (may be referred to as a tab terminal including the wide plate portion 14a). The plate portion 14a protrudes from the side surface 3d of the relay 3 in the orthogonal direction, and protects the side surface 3d of the relay 3 from interference with the outside. The tab terminal portion 14 is accommodated in a large connector housing 19 on the right end side of the connector block 15, and constitutes a power input connector (represented by reference numeral 19) together with the connector housing 19. The bus bar 4 is supported on the connector block 15 by the tab terminal portion 14.

  The connector block 15 has a plurality (three in this example) of connectors 19 to 20 in parallel and integrally, and the connector housing 20 on the center and left end side has a plurality of tab-like (pins) on the lower side of the circuit board 2 side. The terminal 36 (FIG. 3) is accommodated, and a connector (represented by reference numeral 20) for connecting the load side circuit of the automobile is configured. The plurality of tab terminals 36 on the lower side are bent in an L shape, the vertical portion thereof is accommodated in the connector 20, and the horizontal portion is soldered to the circuit board 2.

  An insulating resin connector block body (substitute with reference numeral 15) has an upper horizontal wall portion 21 for horizontally connecting the connector housings 19 and 20, and the front and rear ends of the upper wall 21 project in a bowl shape. 2 and the left and right end portions 21b of the upper wall 21, the lower end 22a of the upper insulating resin case (cover) 22 is received as shown in FIG.

  On the left and right ends 21 b side of the connector block 15, flexible locking frame pieces 25 that engage with the locking protrusions 24 on the outer surfaces of the left and right side walls 23 of the case 22 protrude upward. 1 and FIG. 3, the power distribution unit main body 1 'is configured before mounting the case, and the power distribution unit 1 is configured by mounting the case 22 as shown in FIGS.

  2 and 5, the outer surfaces of the left and right side walls 23 of the case 22 are engaged with a pair of vertical guide rails (not shown) on the inner surface of an insulating resin frame (see the existing example in FIG. 8). A sliding engagement portion 26 is provided, and an engagement projection 27 for a locking arm (not shown) in the frame is provided. The case 22 has vertical wall portions 23 and 28 on the front, rear, left and right sides, an upper horizontal wall portion 29, and a lower opening (represented by reference numeral 22a).

  On the upper wall 29 of the case 22, a fuse block main body 31 is integrally provided as an electric component mounting portion that accommodates the terminals 16 and 30 on the circuit board 2 side and the upper side of the bus bar 4. As shown in FIG. 5, the fuse block main body 31 has a plurality of fuse housing holes 35 in parallel, and front and rear holding terminals (terminals) 16 and 30 are inserted into the front and rear ends of the fuse housing hole 35 from below to form a fuse block (reference numeral 31).

  As shown in FIG. 1, horizontal wall portions 17, 17 ′, 18, and 18 ′ made of insulating resin are projected in a hook shape on the top and bottom of the circuit board 2. The flange walls 17 to 18 ′ are fixed to the circuit board 2 with screwing portions (not shown). The lower flange walls 18 and 18 ′ are abutted and supported (fixed) on the upper wall 21 of the connector block 15. The vertical portions 16 b and 36 b of the substantially L-shaped upper and lower tab terminals 16 and 36 on the surface side of the circuit board 2 are inserted into the slit holes of the upper and lower flange walls 17 and 18 on the front side.

  The horizontal portions 16a and 36a of the upper and lower terminals 16 and 36 penetrate through the through holes of the circuit board 2 (see FIG. 3) and are soldered to a printed circuit on the back side of the board or an intermediate metal core. It is also possible to press-fit and connect to the through hole instead of the solder connection. Depending on circuit specifications, the lower tab terminal 36 may be omitted, and the lower tab terminal (not shown) following the lower plate portion 11 of the bus bar 4 may be used to configure the terminals in the connector block 15. .

  The horizontal portions 16a, 36a of the upper and lower terminals 16, 36 are inserted between the upper and lower surfaces 3b, 3c of the relay 3 and the upper and lower flange walls 17, 18 (see the existing example in FIG. 9). The clamping terminal 16 has a pair of left and right flexible clamping pieces 16c, and a pair of tab terminals of a blade-type fuse (not shown) are inserted (clamped) and connected. It is also possible to form a tab terminal as in the existing example of FIG. 9 instead of the holding terminal 16 and form a fuse block 31 and a connector block (not shown) as an electrical connection block on the upper portion of the case 22. is there.

  As shown in FIG. 3, the upper and lower terminals 30 (only the upper side is shown) on the back surface 2 b side of the circuit board 2 are integrally formed on the upper and lower sides of the vertical narrow strip (longitudinal) bus bar terminals 5. The bus bar terminal 5 is used to connect the upper fuse (not shown) and the lower connector 20 through without passing through the circuit board 2, and is arranged in parallel at the same pitch along the back surface 2 b of the circuit board 2. Has been.

  As shown in FIGS. 3 and 4, the bus bar terminal 5 intersects the vertical bus bar main body 32 facing in parallel with a certain narrow gap along the back surface 2 b of the circuit board 2, and the upper end of the bus bar main body 32. An upper horizontal portion 33 projecting short forward, a clamping terminal 30 projecting upward into the fuse block 31 of the case 22 from the upper horizontal portion 33, and a lower projecting slightly longer forward crossing the lower end of the bus bar body 32 The horizontal portion 34 and a lower tab terminal (not shown) protruding downward from the lower horizontal portion 34 and accommodated in the connector block 15 are configured.

  The bus bar main body 32 is fixedly penetrated by horizontal flange walls 17 ′ and 18 ′ protruding and fixed from the upper and lower ends of the circuit board 2. It is also possible to form the front and rear flange walls 17, 17 ', 18, 18' integrally and fix them to the circuit board 2 with a common screwing portion or the like. The upper and lower two rows of holding terminals 16 and 30 are located opposite to each other and are connected to each other via a fuse (electrical component). Lower tab terminals (not shown) are arranged opposite to each other in two front and rear rows or alternately in a horizontal row, and are connected to a load side circuit (not shown) in the connector housing 20 of the connector block 15.

  On the back surface 2b of the circuit board 2, the tips 7 and 8 of the terminals (leg portions) of the relay 3 and the like (electrical and electronic parts), the tip 6 of the horizontal portion (leg portion) 16a of the upper clamping terminal 16, and the bus bar 4 The distal end (6) of the horizontal terminal portion 12 and the distal end 6 of the horizontal portion (leg portion) 36a of the lower tab terminal 36 protrude and are soldered or the like, but the bus bar body 32 of the plurality of bus bar terminals 5 is provided. Further, by covering the back surface 2b of the circuit board 2 with the upper and lower wall portions 17 ', 18', the leg tips 6 of the terminals 16, 36 on the front surface 2a side are covered, and can be safely protected from interference with the outside. Has been.

  Since the upper and lower terminals 16 on the front side face the bus bar terminals 5, the leg tips 6 of the upper and lower terminals 16 and 36 on the front side are completely covered so as to face the bus bar body 32. The terminals (legs) 7 and 8 of the relay 3 and the like may be positioned between the bus bar main bodies 32 without facing the bus bar main body 32, but a plurality of bus bar terminals 5 are arranged close to each other. Interference with the outside at times is reliably prevented.

  In the above embodiment, a cover-like bus bar 4 that protects the relay 3 and the like on the front surface side of the circuit board 2 and a plurality of bus bar terminals 5 that protect the terminal connection portions 6 to 8 on the back surface side of the circuit board 2. Are used at the same time. For example, only the cover-like bus bar 4 that protects the relay and the like on the front side of the circuit board 2 or a plurality of bus bars that protect the terminal connection portions 6 to 8 on the back side of the circuit board 2 It is also effective to adopt an external interference prevention structure using only the terminal 5.

  In the above embodiment, the power distribution unit 1 to which the case 22 is attached has been described. However, for example, the case 22 is excluded and the power distribution unit main unit 1 ′ is used as the power distribution unit, and the power distribution unit main unit 1 is used. When 'is housed in an inner space of an insulating resin block main body (not shown) together with other units (not shown), the inner wall of the block main body also serves as the case 22 and the fuse block main body (31 ) Are integrally formed, and the block main body can be accommodated in a frame (see reference numeral 69 in FIG. 8).

It is a front view perspective view which shows one Embodiment before the cover mounting | wearing of the power distribution unit which concerns on this invention. It is a front view perspective view of the power distribution unit which shows a cover with a chain line. It is a rear view perspective view which similarly shows the state before the cover mounting | wearing of a power distribution unit. It is a rear view perspective view of the power distribution unit which shows a cover with a chain line. It is a front view perspective view which shows the power distribution unit after cover mounting. It is a longitudinal cross-sectional view which shows one form of the conventional electrical junction box. It is a top view which shows one form of the conventional circuit board assembly. It is a top view which shows one form of the existing electrical junction box. (A) is a perspective view which shows one form of the existing power distribution unit, (b) is a perspective view which similarly shows an internal structure.

Explanation of symbols

1 Power Distribution Unit 2 Circuit Board 3 Relay (Electrical and Electronic Components)
4 Bus bar 5 Bus bar terminal 7 Terminal 12 Terminal part 14 Terminal part 15 Connector block 16 Nipping terminal (terminal)
30 Terminal (terminal part)
31 Fuse block (electrical connection block)
36 Tab terminal (terminal)
37 Tab terminal (terminal part)

Claims (6)

  In the power distribution unit in which the electric and electronic parts are mounted on the circuit board, and terminals are connected to both ends of the circuit board to constitute an electric connection block on one end side and a connector block on the other end side, the electric and electronic parts A power distribution unit comprising a cover-like bus bar covering the circuit board on the circuit board side.   The power distribution unit according to claim 1, wherein a gap is formed between the bus bar and the electric / electronic component.   3. The power distribution unit according to claim 1, wherein one terminal portion of the bus bar is connected to the circuit board, and the other terminal portion of the bus bar is disposed on the connector block.   In the power distribution unit in which the terminals of the electrical and electronic components are connected through the circuit board and the terminals are connected through the both ends of the circuit board to form the electrical connection block on one end and the connector block on the other end. A power distribution unit comprising a plurality of long bus bar terminals arranged in parallel so as to face the circuit board surface on the through side of each terminal.   5. The power distribution unit according to claim 4, wherein one terminal portion of the bus bar terminal is disposed in the electrical connection block, and the other terminal portion of the bus bar terminal is disposed in the connector block.   The power distribution unit according to claim 4 or 5, comprising the configuration of the power distribution unit according to any one of claims 1 to 3.

Images