JP2009136041A - Circuit protective material and connecting structure for circuit protective material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To connect a circuit protective material with the conductor of a printed board without a bus bar. <P>SOLUTION: An input terminal 14 of the circuit protective material 10 is made a tab-form terminal which is to engage and connect with a tuning fork terminal 38 projected from a bus bar 37, and also an output terminal 15 is made a terminal for board connection which is to connect with the conductor 32 of the printed board 30, or both the input terminal 14 and the output terminal 15 are made the above terminals for board connection. The terminal for board connection is provided with a push joint 16 (17), by bending its tip side, and a spring-form terminal metal fitting 33, which consists of a conductive metallic plate, is attached to the surface of the conductor 32 of the printed board 30, and the push joint 16 (17) of the terminal for board connection is pushed against the spring-form terminal metal fitting 33 thereby being electrically connected. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a circuit protection material and a circuit protection material connection structure, and in particular, a circuit protection material comprising a fuse and a circuit breaker housed in an electrical connection box for branch connection of an automobile wire harness, and the circuit protection material printed on a bus bar. It relates to what is connected to the conductor of the substrate.

  Conventionally, circuit protective materials made of fuses and circuit breakers housed inside this type of electrical junction box usually connect both the input and output terminals sandwiching the fusing part to a bus bar housed inside the electrical junction box. ing. (See Japanese Utility Model Publication No. 5-33469)

However, when the bus bar is connected to the input terminal and the output terminal of the circuit protection material, the bus bar pattern becomes complicated, and both the input terminal and the output terminal cannot be formed on the same layer bus bar. It is necessary to increase the number of layers, and there is a problem that the electrical junction box becomes large.
The bus bar is suitable for a large-capacity circuit such as a power supply circuit as compared with the printed circuit board conductor, but has a problem in that it requires a mold and is expensive to manufacture and cannot easily cope with a circuit change. Recently, not only bus bars but also printed boards are often used as the internal circuit of the electrical junction box, and in particular, the output terminal of the circuit protection material is often connected to the conductor of the printed board.

When connecting the output terminal of the circuit protection material to the conductor of the printed circuit board, the terminal of the bus bar is directly connected to the conductor of the printed circuit board, or the terminal of the bus bar and the conductor of the printed circuit board are connected via the relay terminal.
This is because a circuit protection material such as a fuse needs to be replaced with a new fuse when blown, but it is difficult to connect the conductor of the printed circuit board and the terminal of the fuse directly and detachably.

Japanese Utility Model Publication No. 5-33469

  The present invention has been made in view of the above problems, and an object of the present invention is to allow a conductor of a printed circuit board and a terminal of a circuit protection material to be directly and detachably connected without using a bus bar.

In order to solve the above-mentioned problem, as a first invention, a circuit protective material comprising a fuse or a circuit breaker in which an input terminal and an output terminal protrude from a mounting side surface of an insulating resin main body,
The input terminal is a tab-shaped terminal projecting vertically from the mounting side surface, while the output terminal has a shape having a pressing connection part bent 90 degrees vertically projecting from the mounting side surface,
While the tab-shaped input terminal is fitted and connected to a tuning fork terminal protruding from an input side circuit made of a conductor of a bus bar or a printed circuit board,
The output terminal is attached to a conductor of a printed circuit board, and presses and connects the pressing connection portion to a surface of a spring-like terminal fitting that is elastically deformed in the insertion direction of the output terminal. Providing protective materials.

Since the input terminal of the circuit protection material is connected to the power supply circuit with a large amount of current, it is normally connected to the bus bar. It can be fitted with the tuning fork terminal.
On the other hand, the output terminal connected to the circuit whose current amount is smaller than that of the power supply circuit has a shape having a pressing connection portion with a bent tip as described above so that it can be connected to the conductor of the printed circuit board. And the shape of the output terminal is changed.
The output terminal of the circuit protection material is shaped so that it can be connected simply by pressing the pressing connection portion against the surface of a spring-shaped terminal fitting attached to the conductor of the printed circuit board, so it can be easily removed when replacing the circuit protection material In addition, the output terminal of the replaced circuit protection material can be connected to the conductor of the printed circuit board.
In this way, the input terminal can be easily attached to and detached from the bus bar and the output terminal can be easily attached to and detached from the printed circuit board conductor by simply plugging and unplugging when replacing the circuit protective material. Can be increased.

As a second invention, the input terminal of the circuit protection material consisting of a fuse or a circuit breaker is connected to the bus bar and the output terminal is connected to the conductor of the printed circuit board, or both the input terminal and the output terminal of the circuit protection material are printed. Connected to the conductor of the board,
While the output terminal of the circuit protection material to be connected to the conductor of the printed circuit board, or the board connection terminal consisting of the input terminal and the output terminal, the pressing side is provided by bending the tip side thereof,
A spring-like terminal fitting that is elastically deformed in the insertion direction of the board connection terminal is attached to the surface of the conductor of the printed board,
A circuit protective material connection structure is provided, wherein a pressing connection portion of the board connection terminal is pressed against a surface of a spring-like terminal metal fitting on the printed board side to be electrically connected.

The connection structure corresponds to the case where the input circuit is made of a bus bar and the output circuit is made of a printed circuit board, and the case where both the input circuit and the output circuit are made of a printed circuit board as an internal circuit of the electric connection box. .
In the case where an input circuit is provided on the conductor of the printed circuit board, the conductor has a thick film or a wide width to increase the allowable current amount.

In particular, the present invention is suitably used when a circuit breaker is used as a circuit protection material, the input circuit is a bus bar, and the output circuit is a conductor of a printed circuit board.
In the above case, the input terminal of the circuit breaker is a tab-like terminal protruding vertically from the mounting surface of the body made of insulating resin, and is fitted and connected to the tuning fork terminal on the bus bar side,
An output terminal of the circuit breaker is a board connection terminal having the pressing connection portion, and is connected to the spring-like terminal fitting attached to the printed board.

The spring-shaped terminal fitting attached to the conductor of the printed circuit board is a clip-shaped terminal having a "<" shape, and one side surface of the clip-shaped terminal is fixed to the conductor by soldering, while the circuit protection material Press the pressing connection portion of the board connection terminal against the other side of the clip-shaped terminal,
A cover material for the circuit protection material is attached to the non-attaching side surface of the insulating resin main body in which the input terminal and the output terminal of the circuit protection material protrude from the mounting side surface, and the circuit protection material is accommodated in the cover material. It is preferable that the inner surface of the cover member is pressed against the non-attaching side surface of the main body by being locked and fixed to the case, and the pressed contact portion and the clip-shaped terminal are kept in pressure contact.

In addition, while the output terminal of the circuit protection material is connected to the printed circuit board conductor and a spring-shaped terminal fitting as a board connection terminal having the pressing connection portion,
The input terminal of the circuit protection material is the tab-shaped terminal, and is fitted and connected to a tuning fork terminal protruding upward from a bus bar disposed downward through a through hole provided in the printed circuit board, or outside the edge of the printed circuit board. Alternatively, it may be fitted and connected to a tuning fork terminal of a bus bar arranged in the direction.

Further, the spring-like terminal fitting attached to the conductor of the printed circuit board has a female terminal having a shape in which the curved portion is folded inward from one end of the “<” shape, or a pair of curved portions from both ends of the “<” shape. While facing the female terminal of the shape folded back inward, one side of the female terminal is soldered to the conductor or fixed by welding,
The pressing connection portion of the circuit connecting material substrate connection terminal is slid and fitted between the curved portion of the female terminal and the facing surface thereof or between the pair of curved portions from the side. Also good.
With this configuration, the pressure contact state between the spring-shaped terminal fitting and the circuit connecting material substrate connection terminal can be stably maintained without using the cover material or the like.

Furthermore, while the output terminal of the circuit protection material is connected to the conductor of the printed board as the board connection terminal having the pressing connection portion via the spring-like terminal fitting,
The input terminal of the circuit protection material may be the tab-shaped terminal, and may be fitted and connected by sliding to a tuning fork terminal that protrudes in the horizontal direction from the bus bar and is disposed outside the edge of the printed circuit board.

  The clip-shaped terminal or female terminal and the printed board conductor may be fixed with a conductive adhesive. Alternatively, when attaching these terminals along the edge of the printed circuit board, bend one side piece of the terminal outward in a U-shape, and both sides of the printed circuit board's edge sideways At the same time, the bent portion may be pressed against the conductor. Alternatively, a through hole may be provided on the conductor of the printed circuit board, and the periphery of the through hole may be sandwiched between the bent portions of the terminals.

As described above, according to the present invention, the conductor of the printed circuit board and the terminal of the circuit protection material can be detachably electrically connected by simply inserting and removing the circuit member without using the bus bar.
Therefore, compared with the configuration connected to the conductor of the printed circuit board through the bus bar, the circuit configuration can be greatly simplified, and as a result, it is not necessary to change the circuit pattern of the bus bar according to the circuit change, and It is possible to reduce the size and cost of the electrical junction box.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Each of the embodiments shows a circuit protective material housed in a case of an electric connection box for mounting on an automobile and a connection structure of the circuit protective material.

FIG. 1 to FIG. 3 show a circuit protective material connection structure according to the first embodiment.
The circuit protection material is composed of the circuit breaker 10 and is disposed on the printed circuit board 30 accommodated in the case 50. The circuit breaker 10 has an input terminal 14 and an output terminal 15 projecting from a mounting surface 12 of a body 11 made of insulating resin. The input terminal 14 is a tab-like terminal projecting vertically from the mounting surface 12, while the output terminal 15 is projecting vertically from the mounting surface 12 and has a pressing connection portion 16 bent at 90 ° on the tip side. That is, the shapes of the input terminal 14 and the output terminal 15 of the circuit breaker 10 are different.

  As shown in FIG. 1, the printed circuit board 30 is provided with a conductor 32 having a required pattern on the upper surface of an insulating substrate 31. On the conductor 32, a spring-like connection terminal composed of a clip-like terminal 33 is attached at a position facing the output terminal 15 of the circuit breaker 10. The clip-shaped terminal 33 is made of a conductive metal plate, and is composed of both side pieces 33a and 33b which are elastically deformed in a spring shape in the opening and closing direction as a “<” shape, and the outer surface of the one side piece 33a is soldered to the conductor 32. The outer surface of the other side surface 33b is opposed to the pressing connection portion 16 of the circuit breaker 10 with the pressure contact surface 33c.

  A through hole 36 is formed in the printed circuit board 30 at a position facing the input terminal 14 of the circuit breaker 10. A bus bar 37 is disposed in the horizontal direction below the printed circuit board 30, and a plurality of tuning fork terminals 38 project upward from the bus bar 37. Each tuning fork terminal 38 is disposed vertically below each through hole 36.

  A cover member 20 is attached to the main body 11 of the circuit breaker 10 so as to cover the opposite mounting surface 13 opposite to the mounting surface 12. As shown in FIGS. 2 (A) and 3, the cover member 20 has a plurality of recesses 21 on the lower surface side that can fit and house the main body 11 of the circuit breaker 10, and the opposite side wall surfaces. A pair of lock claws 22 protrude downward from the lower end. The lock claw 22 may protrude from the four corners on the lower surface side of the cover member 20.

  The height of the upper surface (bottom surface) of the recess 21 is in a pressure contact state with the clip-like terminal 33 attached to the conductor 32 of the printed circuit board 30 when the cover member 20 is attached to the case 50 as will be described later. The height of the circuit breaker 10 is in contact with the anti-mounting surface 13 of the main body 11.

The operation of connecting the circuit breaker 10 to the conductor 32 and the bus bar 37 of the printed circuit board 30 is as follows. First, the circuit breaker 10 is fitted and fixed to the recess 21 of the cover member 20 as shown in FIGS. After that, the cover member 20 is fitted into a cover member attachment hole 52 provided in the upper wall 51 of the case 50 and fixed.
As a result, as shown in FIG. 3, the input terminal 14 of the circuit breaker 10 is fitted and connected to the tuning fork terminal 38 of the bus bar 37 disposed below the printed circuit board 30 through the through hole 36, and the output terminal 15. The press connection portion 16 is press-contacted to the press-contact surface 33c of the clip-like terminal 33 soldered to the conductor 32 of the printed circuit board 30, and the cover member 20 is connected to the anti-mounting surface 13 of the main body 11 of the circuit breaker 10. The upper surface of the recess 21 is pressed.

As described above, the force terminal 14 of the circuit breaker 10 connected to the high-current power supply circuit is a tab-like terminal, and the output terminal 15 connected to the relatively low-current output circuit has the pressing connection portion 16 on the tip side. By forming the circuit breaker 10, the input terminal 14 is fitted and connected to the tuning fork terminal 18 of the bus bar 37, while the output terminal 15 is pressed against the clip-like terminal 33 fixed to the conductor surface of the printed circuit board 30. And press-fit.
In addition, even when the melted portion of the circuit breaker 10 is melted and needs to be replaced, the connection between the bus bar 37 and the conductors of the printed circuit board 30 can be released simply by removing the circuit breaker 10.
As described above, the output terminal 15 of the circuit breaker 10 can be detachably connected to the conductor 32 of the printed circuit board without using the bus bar only by fixing the clip-like terminal 33 to the conductor 32 of the printed circuit board 30 in advance. Therefore, since the bus bars can be reduced, it is possible to reduce the size and cost of the case 50, and thus the entire electrical connection box (not shown), and it is possible to improve the adaptability to design changes and the like.

  Furthermore, the circuit breaker 10 that presses and connects the pressing connection portion 16 of the output terminal 15 to the clip-shaped terminal 33 presses the anti-mounting surface 13 of the main body 11 with the cover material 20, so that the circuit breaker 10 is prevented from being lifted. The pressure contact state between the output terminal 15 and the clip-shaped terminal 33 can be stably maintained.

  Since a strong fitting force is applied to the tuning fork terminal 38 of the bus bar 37 at the time of fitting connection with the input terminal 14, the insulating substrate 31 of the printed board 30 is formed thick in order to support the tuning fork terminal 38, A cavity for fitting and holding the tuning fork terminal 38 may be provided on the back side of the insulating substrate 31.

FIG. 4 shows a modification of the first embodiment.
In this modification, the connection structure between the input terminal 14 of the circuit breaker 10 and the bus bar 37 is changed.
In other words, the circuit breaker 10 is arranged on the one end edge 30a of the printed circuit board 30 instead of forming the hole 36 through which the input terminal 14 penetrates the printed circuit board 30, and the printed circuit board 30 is arranged outside the one end edge 30a. The bus bar 37 extending in a direction parallel to the one end edge 30a is disposed, and the input terminal 14 is fitted and connected from above without penetrating the printed circuit board 30 to the tuning fork terminal 38 protruding upward from the bus bar 37, and The output terminal 15 is connected to a clip-like terminal 33 attached on the printed circuit board 30.

5 and 6 show a second embodiment of the present invention.
In the second embodiment, as shown in FIGS. 5A and 5B, the circuit breaker 10 is arranged on one end edge 30a of the printed circuit board 30, and the female terminal is placed on the conductor 32 of the printed circuit board 30. 34 is attached, and a bus bar 39 extending in a direction parallel to the edge 30a of the printed circuit board 30 is arranged below the printed circuit board 30 and horizontally from the same side of the bus bar 39. A plurality of tuning fork terminals 40 are provided so as to protrude outward from the edge 30 a of the printed circuit board 30.

  The female terminal 34 is made of a conductive metal plate, and the open / close end side of the one side piece 34a is the other side piece of the both side pieces 34a, 34b that are elastically deformed in a spring shape in the open / close direction as a "<" shape. The curved portion 34c is formed inside by folding back to the 34b side, and the outer surface of the other side piece 34b is soldered onto the conductor 32. The female terminals 34 are arranged with a required interval in a direction parallel to the one end edge 30 a of the printed circuit board 30, and are arranged so that the open / close end side faces the one end edge 30 a side of the printed circuit board 30.

  A terminal insertion port 53 for a circuit breaker is provided on the upper wall 51 of the case 50 in which the printed circuit board 30 and the bus bar 39 are accommodated. As shown in FIG. 6A, one terminal insertion port 53 is provided independently for each circuit breaker 10, and each insertion port 53 is connected to the input terminal 14 and the output terminal of the circuit breaker 10. A horizontally long slide hole 53a through which the 15 vertical portions can pass and slide in the horizontal direction is communicated with a press connection portion hole 53b through which the press connection portion 16 of the output terminal 15 can pass.

  When connecting the circuit breaker 10 to the conductor 32 of the printed circuit board 30 and the bus bar 39, first, as shown in FIGS. 6 (A) and 6 (B), each circuit breaker is inserted into each terminal insertion port 53 from above the case 50. 10 input terminals 14 and output terminals 15 are inserted, and the body 11 of the circuit breaker 10 protruding from the upper surface of the case 50 is held and slid in the horizontal direction. Thereby, as shown in FIGS. 5A and 5B, the circuit breaker 10 slides horizontally inward from the outside on the edge 30a side of the printed circuit board 30, and the input terminal 14 is moved to the tuning fork terminal. At the same time, the press connection portion 16 of the output terminal 15 is press-fitted between the curved portion 34c of the female terminal 34 and the other side piece 34b from the side. Make a pressure connection.

FIG. 7 shows a modification of the second embodiment.
In the present modification, the other side piece 34b of the female terminal 34 ′ is bent outward in a U-shape, and the edge 30a of the printed board 30 is sandwiched from the side by the bent portion 34d. A female terminal 34 ′ is press-connected to the conductor 32 disposed in the vicinity of the edge 30a. Accordingly, the female terminal 34 ′ can be easily fixed to the conductor 32 without using a soldering operation or a conductive adhesive.

8A and 8B show the main part of the third embodiment of the present invention.
In the third embodiment, a horizontally long terminal mounting hole 41 is formed in the printed circuit board 30 and the periphery of the terminal mounting hole 41 is sandwiched between the bent portions 34d of the female terminal 34 ′. A female terminal 34 ′ is press-connected to the conductor 32 disposed in the vicinity of.
A horizontal bus bar 39 is disposed below the printed circuit board 30, and the tuning fork terminal 40 projects horizontally from the side of the horizontal bus bar 39, and the tuning fork terminal 40 is disposed vertically below the terminal mounting hole 41. The protruding direction of the tuning fork terminal 40 is the same as the direction of the open / close end of the female terminal 34 '.

  In this embodiment, as shown in FIG. 8A, the input terminal 14 of the circuit breaker 10 is passed through the terminal mounting hole 41 and then slid in the horizontal direction as shown in FIG. 8B. The input terminal 14 is fitted and connected to the tuning fork terminal 40, and at the same time, the pressing connection portion 16 of the output terminal 15 is press-fitted between the curved portion 34 c of the female terminal 34 ′ and the other side piece 34 b and pressed. is doing.

FIG. 9 shows a fourth embodiment of the present invention.
In the fourth embodiment, a spring-shaped terminal fitting made of a female terminal 35 is attached on the conductor 32 of the printed circuit board 30. The female terminal 35 is also made of a conductive metal plate, but the open / close end sides of both side pieces 35a and 35b that are elastically deformed in a spring shape in the open / close direction as a "<" shape are folded back in the opposite direction to each other. Are formed, and the outer surface of the other side piece 35b is fixed to the conductor 32 by soldering.

  The upper wall 54 of the case 50 is provided with one large circuit breaker insertion port 54 through which a plurality of circuit breakers 10 can be inserted up to the main body 11. In the case 50, the printed circuit board 30 is accommodated at a position spaced from the upper wall 51 of the case 50, and a horizontal bus bar 39 is accommodated below the printed circuit board 30. The shape of the horizontal bus bar 39, the tuning fork terminal 40 protruding from the horizontal bus bar 39, and the arrangement position of the tuning fork terminal 40 are the same as those in the second embodiment.

  When connecting the circuit breaker 10 to the conductor 32 and the bus bar 39, the circuit breaker 10 is inserted from the insertion port 54 of the case 50 and completely inserted into the case 50 up to the main body 11. Next, by sliding the circuit breaker 10 in the horizontal direction, the input terminal 14 is inserted and fitted into the tuning fork terminal 40 from the side, and at the same time, the pressing connection portion 16 of the output terminal 15 is connected to the female terminal 35. Are press-fitted between the pair of curved portions 35c and 35d and are press-connected.

FIG. 10 shows a fifth embodiment of the present invention.
In the fifth embodiment, both the input terminal 14 and the output terminal 15 of the circuit breaker 10 ′ are connected to the conductors 32A and 32B of the printed board 30 as board connection terminals.

Specifically, the input terminal 14 of the circuit breaker 10 ′ protrudes vertically from the mounting surface 12 of the main body 11 and bends the tip side by 90 degrees to form the pressing connection portion 17. The point which forms the press connection part 16 in the front-end | tip of the output terminal 15 is the same as each said embodiment.
A conductor 32A constituting a power circuit and a conductor 32B constituting an output circuit are arranged on the printed circuit board 30, and a clip-like terminal 33 is fixed to each of the conductors 32A and 32B by soldering. The pressure connection portion 17 of the input terminal 14 of the circuit breaker 10 'is pressed against the pressure contact surface 33c of the clip-like terminal 33 attached to the output terminal 33, and the output terminal is contacted with the pressure contact surface 33c of the clip-like terminal 33 attached to the conductor 32B of the output circuit. The press connection part 16 of 15 is pressed and both the input terminal 14 and the output terminal 15 are electrically connected to the conductors 32A and 32B of the printed circuit board 30.

It is a perspective view which shows the connection structure of the circuit protection material which concerns on 1st embodiment of this invention. (A) (B) is a perspective view which shows the procedure which accommodates the circuit protection material shown in FIG. 1 in a case. It is a side view in a case which shows the connection structure of a circuit protection material, a printed circuit board conductor, and a bus bar. It is a principal part front view which shows the modification 1 of 1st embodiment. The connection structure of the circuit protection material which concerns on 2nd embodiment is shown, (A) is a disassembled perspective view, (B) is a principal part front view. (A) (B) is a perspective view which shows the procedure which connects the circuit protection material shown in FIG. 5 with the printed circuit board etc. in a case. It is a principal part front view which shows the modification 1 of 2nd embodiment. The third embodiment of the present invention is shown, and (A) and (B) are main part cross-sectional views illustrating a procedure for connecting a circuit protection material to a printed circuit board conductor and a bus bar. It is a front view in the case which shows 4th embodiment of this invention. It is a perspective view which shows 5th embodiment of this invention.

Explanation of symbols

10, 10 'circuit breaker (circuit protection material)
DESCRIPTION OF SYMBOLS 11 Main body 14 Input terminal 15 Output terminal 16, 17 Press connection part 20 Cover material 30 Printed circuit board 32 Conductor 33 Clip-shaped terminal (spring-shaped terminal metal fitting)
34, 34 ', 35 Female terminal (spring-shaped terminal fitting)
37, 39 Horizontal busbar 38, 40 Tuning fork terminal 50 Case

Claims (7)

A circuit protective material consisting of a fuse or circuit breaker in which the input terminal and the output terminal protrude from the mounting side of the body made of insulating resin,
The input terminal is a tab-shaped terminal projecting vertically from the mounting side surface, while the output terminal has a shape having a pressing connection part bent 90 degrees vertically projecting from the mounting side surface,
While the tab-shaped input terminal is fitted and connected to a tuning fork terminal protruding from an input side circuit made of a conductor of a bus bar or a printed circuit board,
The output terminal is attached to a conductor of a printed circuit board, and presses and connects the pressing connection portion to a surface of a spring-like terminal fitting that is elastically deformed in the insertion direction of the output terminal. Protective layer. Connect the input terminal of the circuit protection material consisting of a fuse or circuit breaker to the bus bar and connect the output terminal to the conductor of the printed circuit board, or connect both the input terminal and the output terminal of the circuit protection material to the conductor of the printed circuit board. And
While the output terminal of the circuit protection material to be connected to the conductor of the printed circuit board, or the board connection terminal consisting of the input terminal and the output terminal, the pressing side is provided by bending the tip side thereof,
A spring-like terminal fitting that is elastically deformed in the insertion direction of the board connection terminal is attached to the surface of the conductor of the printed board,
A circuit protective material connection structure, wherein a pressing connection portion of the board connection terminal is pressed against a surface of a spring-like terminal metal fitting on the printed circuit board side for electrical connection. While the input terminal of the circuit breaker is a tab-like terminal protruding vertically from the mounting surface of the body made of insulating resin, while being fitted and connected to the tuning bar fork terminal on the bus bar side,
The circuit protection material connection structure according to claim 2, wherein an output terminal of the circuit breaker is a board connection terminal having the pressing connection portion and is connected to the spring-like terminal fitting attached to the printed board. The spring-shaped terminal fitting attached to the conductor of the printed circuit board is a clip-shaped terminal having a "<" shape, and one side surface of the clip-shaped terminal is fixed to the conductor by soldering, while the circuit protection material Press the pressing connection portion of the board connection terminal against the other side of the clip-shaped terminal,
A cover material for the circuit protection material is attached to the non-attaching side surface of the insulating resin main body in which the input terminal and the output terminal of the circuit protection material protrude from the mounting side surface, and the circuit protection material is accommodated in the cover material. The inner surface of the cover material is pressed against the opposite mounting side surface of the main body by being locked and fixed to the case, and the pressure contact state between the pressing connection portion and the clip-shaped terminal is maintained. Circuit protection material connection structure. While the output terminal of the circuit protection material is connected to the conductor of the printed circuit board via a spring-shaped terminal fitting as a board connection terminal having the pressing connection portion,
The input terminal of the circuit protection material is the tab-shaped terminal, and is fitted and connected to a tuning fork terminal protruding upward from a bus bar disposed downward through a through hole provided in the printed circuit board, or outside the edge of the printed circuit board. The circuit protective material connection structure according to claim 4, wherein the connection structure is fitted and connected to a tuning fork terminal of a bus bar arranged on the side. The spring-shaped terminal fitting attached to the conductor of the printed circuit board has a female terminal with a curved portion folded inward from one end of the "<" shape, or a pair of curved portions opposed from both ends of the "<" shape. A female terminal folded back inward, and one side of the female terminal is fixed to the conductor by soldering or welding,
The pressing connection portion of the circuit connecting material substrate connection terminal is slid and fitted between the curved portion of the female terminal and the facing surface thereof or between the pair of curved portions from the side. The circuit protection material according to claim 2 or claim 3. While the output terminal of the circuit protection material is connected to the conductor of the printed circuit board via the spring-shaped terminal fitting as a board connection terminal having the pressing connection portion,
The input terminal of the circuit protection material is the tab-shaped terminal, and is fitted and connected by sliding to a tuning fork terminal that protrudes in a horizontal direction from the bus bar and is disposed outside the edge of the printed circuit board. Connection structure of the circuit protection material described.

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