JP5609266B2 - Electrical junction box - Google Patents

Description

  The present invention relates to an electrical junction box.

  In recent years, with the increase in functionality of automobiles and the like, there has been a demand for downsizing of an electrical junction box that is mounted on a vehicle and has a function of executing switching of in-vehicle electrical components.

  As a method for reducing the size of the electrical junction box, as shown in Patent Document 1, there is a method using a flexible flat cable 3 (flexible circuit board) as a circuit board accommodated in the electrical junction box. This is because the flexible flat cable 3 is placed on the two insulation panels 1 and 2, the backs of the insulation panels 1 and 2 are aligned, and the flexible flat cable 3 is folded and electrically connected. It is housed in a box. Thus, since the flexible flat cable 3 is arranged in two layers in the electrical junction box, the area occupied by the circuit board in the same plane is reduced, thereby reducing the size of the electrical junction box. .

JP 2007-166743 A

  By the way, when the flexible flat cable 3 stacked on the insulation panels 1 and 2 is accommodated in the case, the insulation panels 1 and 2 are attached to the cases 8 and 9 so as not to rattle in the case. Need to be fixed.

  However, in Patent Document 1, it is not necessary to align the insulation panels 1 and 2 through the hinges 13 and can be stably fixed inside the case. There is no description on how to fix the insulation panels 8 and 9, and even if the insulation panels 1 and 2 are fixed to the cases 8 and 9, the relative positions of the insulation panels 1 and 2 are not fixed. The operation of positioning and fixing the insulation panel 1 to the case 8 and the insulation panel 2 to the case 9 is necessary, which causes a reduction in mounting workability.

  The present invention has been completed based on the above circumstances, and an object thereof is to provide an electrical junction box that can improve the workability of attaching a flexible circuit board to a case.

An electrical junction box according to the present invention is an electrical junction box that is folded into a flexible circuit board and accommodated in a case in a state of being opposed to each other with a predetermined interval between the two areas. The flexible circuit board and the flexible circuit A first reinforcing plate overlaid on one region of the substrate, a second reinforcing plate overlaid on the other region of the flexible circuit board, and a spacer positioned between the first and second reinforcing plates. A circuit structure that is provided is accommodated in the case, and the spacer includes an insertion groove for inserting and holding the edge of the first reinforcing plate, and the flexible circuit board is folded back. wherein with a boss portion for the second reinforcing plate in the opposing state and fixed to screw into the spacer is provided with the spacer, facing opposing sides of the two reinforcing plates A pair of interval holding walls located at the center and a connecting portion formed by connecting the interval holding walls to form the insertion groove are integrally formed, and of the connecting portions, the folded portion of the flexible circuit board. The portion located inside is characterized in that it is a curved surface portion having an arc-shaped cross section that curves the folded portion in an arc shape (means 1).

According to the configuration of the means 1, the first reinforcing plate overlaid on the flexible circuit board is inserted into the insertion groove of the spacer, while the second reinforcing plate overlaid on the flexible circuit board is screwed to the spacer at the boss portion. As a result, the flexible circuit board, the two reinforcing plates, and the spacer are unitized as a circuit component. When attaching to the case, it is only necessary to attach the unitized circuit structure inside the case of the electrical junction box, so that the workability of attaching the flexible circuit board to the case can be improved.
Further, the folded portion of the flexible circuit board can be easily curved in an arc shape. In addition, it becomes easy to maintain the shape of the folded portion even after being fixed to the case.

In addition to the configuration of the means 1, the connecting portion may be provided with an elastic engagement claw for locking the first reinforcing plate inserted into the insertion groove (means 2).
According to the structure of the means 2, one area | region of a flexible circuit board can be positioned via a 1st reinforcement board.

An electrical junction box according to the present invention is an electrical junction box that is folded into a flexible circuit board and accommodated in a case in a state of being opposed to each other with a predetermined interval between the two areas. The flexible circuit board and the flexible circuit A first reinforcing plate overlaid on one region of the substrate, a second reinforcing plate overlaid on the other region of the flexible circuit board, and a spacer positioned between the first and second reinforcing plates. A circuit structure that is provided is accommodated in the case, and the spacer includes an insertion groove for inserting and holding the edge of the first reinforcing plate, and the flexible circuit board is folded back. And a boss portion for screwing and fixing the second reinforcing plate to the spacer in the opposed state, and the spacer is opposed to both side portions of the two reinforcing plates. A pair of interval holding walls located at the position and a connecting portion formed by connecting the interval holding walls to form the insertion groove are integrally formed, and the connection portion is inserted into the insertion groove. A feature is that an elastic engagement claw for locking the first reinforcing plate is provided (means 3). In addition, you may make it the part located inside the folding | turning part of the said flexible circuit board among the said connection parts be a curved surface part which has an arc-shaped cross section.
According to the configuration of the means 3, the first reinforcing plate overlaid on the flexible circuit board is inserted into the insertion groove of the spacer, while the second reinforcing plate overlaid on the flexible circuit board is screwed to the spacer at the boss portion. As a result, the flexible circuit board, the two reinforcing plates, and the spacer are unitized as a circuit component. When attaching to the case, it is only necessary to attach the unitized circuit structure inside the case of the electrical junction box, so that the workability of attaching the flexible circuit board to the case can be improved.
  In addition, one region of the flexible circuit board can be positioned via the first reinforcing plate.

In addition to any one of the means 1 to 3, the spacing holding wall of the spacer may be integrally provided with a fixing piece for fixing the spacer to the case (means 4). ).
According to the configuration of the means 4, the spacer can be fixed to the case with a simple configuration.

In addition to any one of the means 1 to 4, the second reinforcing plate may be made of metal (means 5).
According to the structure of the means 5, since the 2nd reinforcement board is metal, the intensity | strength of a reinforcement board can be raised compared with the case where it is made from a synthetic resin, for example. Further, by making the second reinforcing plate made of metal, the second reinforcing plate can be used for electrical connection between the conductive paths.

In addition to the configuration of any one of the means 1 to 5, the flexible circuit board is located on the inner side of the flexible circuit board and the reinforcing plates overlapping with the flexible circuit board, and the inner side of the flexible circuit board. An electronic component may be mounted on the surface (means 6).
According to the structure of the means 6, since the electronic component is located on the inner side of the reinforcing plate, the reinforcing plate can be provided with a function of protecting the electronic component.

In addition to the configuration of any one of means 1 to 6, the case is integrally provided with a connector part to which a connector can be attached from the outside, and the terminal of the connector part extends into the case. The flexible circuit board and the second reinforcing plate may be passed through and soldered (means 7).
According to the structure of the means 7, the terminal of a connector part and a 2nd reinforcement board can be electrically connected.

  According to the present invention, the workability of attaching the flexible circuit board to the case can be improved.

The perspective view showing the electric junction box concerning Embodiment 1 Top view showing the electrical junction box AA sectional view of FIG. BB sectional view of FIG. An exploded perspective view showing an electrical junction box Plan view showing the circuit structure Front view showing the circuit structure Rear view showing the circuit structure Left side view showing the circuit structure Bottom view showing circuit structure The perspective view showing before a flexible circuit board is inserted in a spacer The perspective view showing the state where the flexible circuit board was inserted in the spacer A perspective view showing a circuit structure Plan view showing the circuit structure Front view showing the circuit structure Bottom view showing circuit structure CC sectional view showing a circuit structure The figure explaining attachment to the case body of a circuit composition object The figure showing the state where the circuit composition object was attached to the case body

<Embodiment 1>
Embodiment 1 of the present invention will be described with reference to FIGS.
In this embodiment, the electrical junction box 10 shown in FIG. 1 is disposed between a power source such as a battery and in-vehicle electrical components such as a headlamp and a motor, and performs switching for the in-vehicle electrical components. The power supply to the product and the control of the power supply are performed. In the following, the upper and lower direction will be described with reference to FIG.

As shown in FIG. 5, the electrical junction box 10 includes a circuit configuration body 20 having a generally flat shape and a case 11 that houses the circuit configuration body 20.
The circuit structure 20 includes a flexible circuit board 21 folded so that two predetermined areas are arranged in two upper and lower stages, a first reinforcing plate 25 superimposed on one area of the flexible circuit board 21, and a flexible circuit. It has the 2nd reinforcement board 27 piled up on the other area | region of the board | substrate 21, and the frame-shaped spacer 30 holding the shape of the flexible circuit board 21. FIG.

The flexible circuit board 21 has flexibility, and has a substantially rectangular shape as shown in FIG. Conductive paths (not shown) are formed on the front surface and / or back surface of the flexible circuit board 21 by a printed wiring technique.
The flexible circuit board 21 has two regions. One of the regions (the right side in FIG. 11) is a signal portion 21A through which a relatively small signal current flows, and the other region (the left side in FIG. 11). ) Is a power unit 21B through which relatively large power flows. In addition, a folded portion 21C is formed by folding the signal portion 21A and the power portion 21B in a substantially semicircular arc shape.
On the signal portion 21A, the first reinforcing plate 25 is laminated (overlapped) via an insulating layer (not shown), while in the power portion 21B, the second reinforcing plate 27 is interposed via an insulating layer (not shown). Are stacked (stacked). As the insulating layer, any material such as an insulating adhesive layer, an adhesive sheet made of an insulating synthetic resin, or a solder resist can be used as necessary.

As shown in FIG. 17, when the flexible circuit board 21 is folded back with the spacer 30 interposed therebetween, the signal portion 21 </ b> A is disposed on the upper side of the spacer 30, while the power portion 21 </ b> B is located below the spacer 30. Be placed.
A microcomputer 24 (an example of an “electronic component”) that controls ON / OFF of the switching element is mounted on the lower surface of the signal portion 21A (the surface of the signal portion 21A opposite to the first reinforcing plate 25). .
As shown in FIG. 11, the power unit 21B has slightly larger dimensions in the front-rear direction and the width direction than the signal unit 21A. Therefore, the width dimension of the boundary portion between the power portion 21B and the folded portion 21C is large in a step shape.

A terminal insertion hole 22 is formed in the power portion 21B at a position near the left end in FIG.
Further, although not shown in the figure, a switching element (an example of “electronic component”) is mounted on the surface opposite to the second reinforcing plate 27 (the lower surface in FIG. 11). As the switching element, any element such as a semiconductor relay or a mechanical relay can be used as necessary. In this embodiment, a semiconductor relay is used.
Three screw insertion holes 23 are provided side by side on both side edges of the power unit 21B.

  The folded portion 21 </ b> C is a portion having a substantially semicircular arc shape by bending the flexible circuit board 21. The reinforcing plates 25 and 27 are not laminated on the folded portion 21C.

  The first reinforcing plate 25 is a synthetic resin plate that has substantially the same size as the signal portion 21A (overlaps the entire signal portion 21A) and has a substantially rectangular shape. The first reinforcing plate 25 is formed with a pair of locking holes 26 on the left and right. The locking hole 26 is a rectangular through hole, and is formed at a position slightly closer to the front of the first reinforcing plate 25 and slightly closer to the end in the width direction.

The second reinforcing plate 27 is substantially the same size as the electric power unit 21B (overlaid on the entire electric power unit 21B), is a substantially rectangular metal conductive plate, and the metal plate material has a predetermined shape. It is formed by pressing.
A terminal insertion hole 28 through which the connector terminal 16 is inserted is formed in the second reinforcing plate 27. The terminal insertion hole 28 is provided in a portion of the end portion of the second reinforcing plate 27 that overlaps the end portion of the flexible circuit board 21 (the left end portion in FIG. 11).

The terminal insertion hole 28 includes a connection hole 28 </ b> A that is electrically connected to the connector terminal 16, and an escape window portion 28 </ b> B that opens larger than the connection hole 28 </ b> A and avoids electrical connection with the connector terminal 16. . The escape window 28 </ b> B is provided corresponding to the position of the terminal insertion hole 22 of the flexible circuit board 21.
The first reinforcing plate 25 and the second reinforcing plate 27 are arranged on the outer surface side with respect to the flexible circuit board 21 when the flexible circuit board 21 is folded (attached to the spacer 30).

  Three screw insertion holes 29 that are in communication with the screw insertion holes 23 of the flexible circuit board 21 are provided side by side at both side edges of the second reinforcing plate 27. Of the three screw insertion holes 29 arranged in a row, the middle screw insertion hole 29 is used for attaching and fixing the second reinforcing plate 27 to the spacer 30, and the screw insertion holes 29 on both the front and rear sides are spacers 30. Is attached to the case 11 and fixed.

(Spacer 30)
The spacer 30 is a member for holding the shape of the flexible circuit board 21 that is disposed between the two regions in which the flexible circuit board 21 is folded and opposed to each other. 21B has a pair of left and right spacing walls 31 and 31 for holding a distance between the pair 21B and a connecting portion 32 for connecting the pair of spacing walls 31 and 31.
The interval holding walls 31 and 31 have a height dimension corresponding to the interval between the signal unit 21A and the power unit 21B, and the dimension in the front-rear direction is slightly larger than the signal unit 21A and is larger than that of the power unit 21B. small.

  The connecting portion 32 includes an outer connecting portion 33 that is disposed outside the first reinforcing plate 25, an inner connecting portion 38 that is disposed between the signal portion 21A and the power portion 21B in the flexible circuit board 21, and maintains a gap. It comprises an insertion groove 40 formed on each inner surface side of the walls 31 and 31 and a front stop wall portion 39 against which the first reinforcing plate 25 is abutted at the front end portions of the interval holding walls 31 and 31.

The outer connecting portion 33 includes an intermediate connecting portion 34 that connects intermediate portions in the front-rear direction of the interval holding walls 31 and 31, and an end portion that is arranged in parallel with the intermediate connecting portion 34 and connects the front end portions of the interval holding walls 31 and 31. And a connecting portion 35.
The front end portion of the end connecting portion 35 is integrally connected to the lower front stop wall portion 39.
The intermediate connecting portion 34 and the end connecting portion 35 are connected by three reinforcing portions 36 at a predetermined interval.

Outside the reinforcing portions 36 on both sides, elastic engagement claws 37 (a pair of left and right) that protrude in parallel with the reinforcing portion 36 from the end connecting portion 35 toward the intermediate connecting portion 34 are provided.
A locking projection 37 </ b> A that protrudes downward is formed at the tip of the elastic engagement claw 37. The locking protrusion 37A rises in a step shape and has an inclined surface with a protruding dimension that decreases toward the tip.
The inner coupling portion 38 includes a curved surface portion 38 </ b> A having a substantially semicircular arc-shaped cross section at the rear end portions of the interval holding walls 31 and 31. The curved surface portion 38A is located inside the folded portion 21C of the flexible circuit board 21.

  The insertion groove 40 is for inserting the first reinforcing plate 25 on which the flexible circuit board 21 is overlapped. The insertion groove 40 is provided over the entire length of the interval holding walls 31, 31, and the upper groove wall 41. Is formed so as to project the upper ends of the interval holding walls 31 and 31 inwardly, and is connected to the outer connecting portion 33 formed on the same plane. The lower groove wall 42 is formed on the lower side spaced from the upper groove wall 41 by a dimension slightly larger than the dimension of the thickness of the first reinforcing plate 25 plus the thickness of the flexible circuit board 21. . The lower groove wall 42 is formed at the same height as the upper end of the curved surface portion 38A, and is continuous with the upper end of the curved surface portion 38A.

A fixed piece 43 that projects outward from the lower end of the spacing walls 31, 31 is provided over the entire length of the spacing walls 31, 31. A pair of front and rear mounting holes 44 are formed through the fixed piece 43, and the circuit component 20 is fixed by screwing the fixed piece 43 to the case 11 when the spacer 30 is attached to the case 11.
Further, the fixed piece 43 is provided with a boss portion 45 for fixing to the spacer 30 with a screw 46 from the lower side surface. The boss portion 45 is provided on the lower surface side of the fixed piece 43 with a screw. It has a hole 45A, and has a screw groove inside the screw hole 45A (see FIG. 10). Due to the formation of the boss portion 45, a cylindrical convex portion 45 </ b> B is formed on the upper surface of the fixed piece 43.
An annular receiving portion for screwing is slightly protruded from the lower surface of the fixing piece 43 at the periphery of the screw hole 45A, and this receiving portion is the middle screw in the left fixing piece 43. Since the position of the mounting hole 44 on the front side (front side in FIG. 10) of the hole 45A is slightly closer to the right-side fixing piece 43, the receiving part of the peripheral part of the middle screw hole 45A extends to the peripheral part of the front mounting hole 44. Has been issued.

As shown in FIG. 5, the case 11 includes a case body 12 in which the circuit structure 20 is accommodated, and a lower cover 18 that covers the circuit structure 20 from the lower side of the case body 12.
The case main body 12 has an elongated block shape in the left-right direction, and a plurality of connector portions 13 into which mating connectors can be fitted are formed side by side.

  As shown in FIG. 4, the connector portion 13 includes a hood portion 14 that opens in the shape of a hood on the rear side, and a back wall 15 that closes the hood portion 14. Protruding. The side of the connector terminal 16 that extends from the inner wall 15 into the case 11 is bent at a right angle downward (upward in FIG. 18) and protrudes from the case body 12 as shown in FIG. In the present embodiment, the case body 12 is formed by molding a connector terminal 16 bent at a right angle in advance with a synthetic resin. The mating connector is electrically connected to the power source or the on-vehicle electrical component via the wire harness.

On the lower surface (upper surface in FIG. 18) of the case body 12, two fixing bosses 17 for screwing the circuit component 20 are provided so as to protrude from the side edge portion.
A fitting convex portion 11 </ b> A is formed on the peripheral portion of the case body 12.
The lower cover 18 is formed with a guide groove 18A that fits with the fitting convex portion 11A so as to protrude from the peripheral edge.

  The case main body 12 and the lower cover 18 are joined by applying ultrasonic vibration in a state where the fitting convex portion 11A and the guide groove 18A are in contact with each other, for example. Note that the bonding method is not limited to this. For example, other heat welding may be used, joining by bonding using an adhesive, or a lock part on one side and a lock receiving part on the other side may be locked.

Then, an example of the manufacturing process of the circuit structure 20 which concerns on this embodiment is demonstrated.
The flexible circuit board 21 is formed in a predetermined shape, and the terminal insertion hole 22 and the screw insertion hole 23 are formed. A conductive path (not shown) is formed on the surface of the flexible circuit board 21 by a printed wiring technique. Moreover, the 1st reinforcement board 25 and the 2nd reinforcement board 27 are formed in a defined shape by pressing a metal plate material.

Next, the first reinforcing plate 25 is stacked on the signal portion 21 </ b> A of the flexible circuit board 21, and the second reinforcing plate 27 is stacked on the power portion 21 </ b> B of the flexible circuit board 21.
The microcomputer 24 is mounted on the surface of the signal portion 21A opposite to the surface on which the first reinforcing plate 25 is laminated, and the power portion 21B is opposite to the surface on which the second reinforcing plate 27 is laminated. A switching element or the like is mounted on the surface.

  Next, as shown in FIG. 11, the first reinforcing plate 25 on which the signal portion 21A is overlapped is inserted into the insertion groove 40 of the spacer 30 with the first reinforcing plate 25 facing upward (FIG. 12). At this time, a notch (not shown) is provided in the curved surface portion 38A so as not to interfere with electronic components such as the microcomputer 24 mounted on the signal portion 21A. After the first reinforcing plate 25 is inserted to a position where it hits the front stop wall portion 39, the flexible circuit board 21 is folded downward, and the second reinforcing plate 27 on which the power portion 21B is overlaid is replaced with the second reinforcing plate 27. Lay down on the bottom of the spacer 30 (FIG. 13). Thus, the flexible circuit board 21 is folded back, so that the signal unit 21A and the power unit 21B are opposed to each other (see FIG. 17).

Next, as shown in FIG. 16, the boss portion 45 is passed through the screw 46 through the middle screw insertion hole 29 (and screw insertion hole 23) of the three screw insertion holes 29 (and screw insertion holes 23) arranged in the front and rear direction. Secure with screws.
Thereby, the circuit structure 20 is formed.
On the other hand, as shown in FIG. 18, the case main body 12 is formed in a predetermined shape by molding the connector terminal 16 formed in a substantially L shape with a synthetic resin.
Then, the connector terminal 16 is passed through the terminal insertion hole 22 and the connection hole 28A of the power section 21B, and the screw insertion hole 23 (and the screw insertion hole 23) except for the middle of the three arranged, the mounting hole for the spacer 30 The screw 46 is passed through the screw 44 and fixed to the fixing boss 17 of the case body 12 (FIG. 19).

Subsequently, the connector terminal 16 passed through the terminal insertion hole 22 and the connection hole 28A is connected to the conductive path and the second reinforcing plate 27 by a known technique such as flow soldering.
When the case body 12 and the lower cover 18 are joined by applying ultrasonic vibration, the electrical junction box 10 is completed (FIG. 1).

According to this embodiment, the following effects are produced.
(1) While the first reinforcing plate 25 overlaid on the flexible circuit board 21 is inserted into the insertion groove 40 of the spacer 30, the second reinforcing plate 27 also overlaid on the flexible circuit board 21 is the boss portion 45 of the spacer 30. The flexible circuit board 21, both the reinforcing plates 25 and 27, and the spacer 30 are unitized as a circuit component 20 by being screwed to the circuit board 20. When attaching to the case 11, it is only necessary to attach the unitized circuit structure 20 in the case 11 of the electrical junction box 10, so that the workability of attaching the flexible circuit board 21 to the case 11 can be improved. .

(2) The spacer 30 forms a insertion groove 40 by connecting a pair of interval holding walls 31, 31 positioned opposite to both sides of both the reinforcing plates 25, 27 and the interval holding walls 31, 31. The connecting portion 32 is integrally formed, and a portion of the connecting portion 32 located inside the folded portion 21C of the flexible circuit board 21 is a curved surface portion 38A having an arcuate cross section. The folded portion 21C of the flexible circuit board 21 can be easily curved in an arc shape. In addition, the shape of the folded portion 21 </ b> C can be easily maintained even after being fixed to the case 11.

(3) Since the coupling portion 32 is provided with an elastic engagement claw 37 for locking the first reinforcing plate 25 inserted into the insertion groove 40, the signal portion 21A (one region) of the flexible circuit board 21 is provided. ) Can be positioned via the first reinforcing plate 25.
(4) Since the holding pieces 43 for fixing the spacer 30 to the case 11 are integrally provided on the interval holding walls 31, 31 of the spacer 30, the spacer 30 can be fixed to the case 11 with a simple configuration. it can.

(5) Since the second reinforcing plate 27 is made of metal, for example, the strength of the second reinforcing plate 27 can be increased as compared with the case of being made of synthetic resin. In addition, since the second reinforcing plate 27 is made of metal, the second reinforcing plate 27 can be used for electrical connection between the conductive paths.
(6) Of the flexible circuit board 21 and the reinforcing plates 25 and 27 overlapping with the flexible circuit board 21, the flexible circuit board 21 is located on the inner side, and the microcomputer 24, the switching element, etc. on the inner side surface of the flexible circuit board 21 Since the (electronic component) is mounted, the microcomputer 24 and the like are positioned on the inner side of the reinforcing plates 25 and 27, and the reinforcing plates 25 and 27 can be provided with a function of protecting the microcomputer 24 and the like. .

(7) The case 11 is integrally provided with a connector portion 13 to which a connector can be attached from the outside. The connector terminal 16 of the connector portion 13 extends into the case 11, and the flexible circuit board 21 and the second circuit board 21 are provided. Since the reinforcing plate 27 is penetrated and soldered, the connector terminal 16 of the connector portion 13 and the second reinforcing plate 27 can be electrically connected.
(8) Since the portion screwed by the boss portion 45 is the second reinforcing plate 27 having a strength stronger than that of the flexible circuit board 21, the flexible circuit board 21 is not broken or torn. The substrate can be fixed to the case.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the embodiment, the power unit 21B and the signal unit 21A are substantially parallel to each other. However, the configuration is not limited thereto, and the power unit 21B and the signal unit 21A may be not parallel to each other.

  (2) In the above embodiment, the first reinforcing plate 25 is made of synthetic resin and the second reinforcing plate 27 is made of metal. However, the present invention is not limited to this, and other members can be used. For example, both the second reinforcing plate 27 and the first reinforcing plate 25 may be made of metal or synthetic resin. Moreover, you may use the member by which fillers, such as glass fiber, were contained in the synthetic resin as a reinforcement board.

DESCRIPTION OF SYMBOLS 10 ... Electrical junction box 11 ... Case 13 ... Connector part 16 ... Connector terminal (terminal of connector part)
DESCRIPTION OF SYMBOLS 17 ... Boss for fixation 20 ... Circuit structure 21 ... Flexible circuit board 21A ... Signal part 21B ... Electric power part 21C ... Folding part 24 ... Microcomputer (electronic component)
DESCRIPTION OF SYMBOLS 25 ... 1st reinforcement board 26 ... Locking hole 27 ... 2nd reinforcement board 30 ... Spacer 31 ... Space | interval holding wall 32 ... Connection part 37 ... Elastic engagement claw 38A ... Curved surface part 40 ... Insertion groove 43 ... Fixed piece 44 ... Mounting hole 45 ... Boss part 46 ... Screw

Claims (7)

An electrical connection box that folds a flexible circuit board and accommodates it in a case in an opposing state with a predetermined interval between the two regions,
The flexible circuit board;
A first reinforcing plate overlaid on one area of the flexible circuit board;
A second reinforcing plate overlaid on the other region of the flexible circuit board;
A spacer positioned between each of the first and second reinforcing plates;
A circuit structure configured to include: is housed in the case;
In the spacer, an insertion groove for inserting and holding the edge of the first reinforcing plate, and the second reinforcing plate is screwed and fixed to the spacer in the opposed state in which the flexible circuit board is folded back. And a spacer is connected to the both side portions of the two reinforcing plates in a state of being opposed to each other, and the gap holding wall is connected to the insertion groove. And a portion located inside the folded portion of the flexible circuit board is a curved surface having an arcuate cross section that curves the folded portion into an arc shape. An electrical junction box characterized by being a part . The electrical connection box according to claim 1, wherein the connecting portion is provided with an elastic engagement claw for locking the first reinforcing plate inserted into the insertion groove . An electrical connection box that folds a flexible circuit board and accommodates it in a case in an opposing state with a predetermined interval between the two regions,
The flexible circuit board;
A first reinforcing plate overlaid on one area of the flexible circuit board;
A second reinforcing plate overlaid on the other region of the flexible circuit board;
A spacer positioned between each of the first and second reinforcing plates;
A circuit structure configured to include: is housed in the case;
In the spacer, an insertion groove for inserting and holding the edge of the first reinforcing plate, and the second reinforcing plate is screwed and fixed to the spacer in the opposed state in which the flexible circuit board is folded back. And a spacer is connected to the both side portions of the two reinforcing plates in a state of being opposed to each other, and the gap holding wall is connected to the insertion groove. The connecting portion is formed integrally, and the connecting portion is provided with an elastic engagement claw for locking the first reinforcing plate inserted into the insertion groove. Electrical junction box. The electrical connection according to any one of claims 1 to 3, wherein a fixing piece for fixing the spacer to the case is integrally provided on the spacing holding wall of the spacer. box. The electrical junction box according to any one of claims 1 to 4, wherein the second reinforcing plate is made of metal. Of the flexible circuit board and the reinforcing plates overlapping therewith, the flexible circuit board is located on the inner side, and an electronic component is mounted on the inner side surface of the flexible circuit board. The electrical junction box according to any one of claims 1 to 5. The case is integrally provided with a connector part to which a connector can be attached from the outside, and the terminal of the connector part extends into the case and penetrates the flexible circuit board and the second reinforcing plate. The electrical junction box according to any one of claims 1 to 6, wherein the electrical junction box is soldered.

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