JP2021016299A - Enclosure of electronic component module - Google Patents

Abstract

To enable workability to be improved when assembling an electric connection box to an electronic component module, and to control overheating of a circuit mounting part.SOLUTION: Provided is an enclosure of an electronic component module 10 mounted on an electric connection box 1 in a freely insertable and extractable manner in the vertical direction, the enclosure including: a connector connection part 11 that is positioned at an upper part in the vertical direction and to which a connector used for wiring is connected; a circuit mounting part 12 that is positioned at a lower part in the vertical direction relative to the connector connection part 11 and on which a circuit including a relay 13 is mounted; and a lower cover 14 that is exposed to the outside as an external wall of the electric connection box when mounting on the electric connection box 1.SELECTED DRAWING: Figure 3

Description

The present invention relates to a housing of an electronic component module mounted on an electrical junction box used together with electrical components mounted on, for example, machinery such as an automobile.

Conventionally, in a vehicle such as an automobile, an electric connection box called a relay box in which a plurality of relays are housed is provided as a relay means when supplying power to an in-vehicle electrical component.

The electrical connection box has a configuration in which electronic components such as relays are housed in a housing having a tubular box body and a lower cover and an upper cover that close the upper and lower openings of the box body, and the inside of the vehicle is via the housing. It is electrically connected to the electrical components.

Furthermore, as the number of electrical components mounted on vehicles increases, the number of electronic components such as relays housed in the electrical junction box also increases. Therefore, these electronic components are modularized to form a configuration independent of the electrical junction box, and the box body It is proposed to be housed inside. As an example, Patent Document 1 discloses a configuration in which an accommodating portion having a space having a rectangular cross section is formed in a relay box made of synthetic resin, and a relay module is provided which is inserted into the accommodating portion from the upper opening of the box body. Has been done. The relay module has a board relay in which a plurality of relays, which are electronic components, are mounted on a circuit board, and a connector connection portion to which a harness connector for connecting the board relay to electrical components inside and outside the box body is connected. The connector connection portion is exposed from the lower opening of the box body and is connected to the harness connector arranged from the lower side to the upper side of the vehicle.

JP-A-2015-8556

However, the above-mentioned conventional technique has the following problems. That is, by exposing the connector connection portion from the lower opening of the box body, the connection with the harness connector is made from the lower side in the vehicle height direction, which is the case of the harness connector when assembling the electric junction box. It was supposed to cause a decrease in workability during confirmation of connection status and other inspections.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a housing of an electronic component module capable of improving workability when assembling an electric connection box to an electronic component module.

In order to achieve the above object, the first aspect of the present invention is a housing of an electronic component module that is freely inserted and removed along the vertical direction with respect to the electrical connector box, and is upward in the vertical direction. When the electrical junction box is attached to the connector connection portion to which the connector used for wiring is connected, the circuit mounting portion to which the circuit including the electronic component is mounted, which is located vertically below the connector connection portion, and the electrical junction box. It is a housing of an electronic component module including a wall body portion exposed to the outside as an outer wall of the electric connector box.

Further, the second side surface of the present invention is a housing of an electronic component module that can be freely inserted and removed along the vertical direction with respect to the electric connector box, and is a connector used for wiring located above the vertical direction. Is arranged between the connector connection portion to which the connector is connected, the circuit mounting portion where the circuit including the electronic component is mounted, which is located vertically below the connector connection portion, and the connector connection portion and the circuit mounting portion. It is a housing of an electronic component module provided with a shielded wall.

The present invention as described above has the effect of making it possible to improve workability when assembling the electrical junction box to the electronic component module.

Sectional drawing which shows the structure of the electric junction box which concerns on embodiment of this invention (A) Front view showing the configuration of the electronic component module according to the embodiment of the present invention (b) Cross-sectional view of a main part showing the configuration of the electronic component module according to the embodiment of the present invention. Sectional drawing which shows the structure of the electronic component module which concerns on embodiment of this invention (A) Front view showing the configuration of the electronic component module according to another embodiment of the present invention (b) Cross-sectional view of a main part showing the configuration of the electronic component module according to another embodiment of the present invention. (A) Front view showing the configuration of the electronic component module according to another embodiment of the present invention (b) Cross-sectional view of a main part showing the configuration of the electronic component module according to another embodiment of the present invention. (A) Front view showing the configuration of the electronic component module according to another embodiment of the present invention (b) Cross-sectional view of a main part showing the configuration of the electronic component module according to another embodiment of the present invention. Sectional drawing which shows the structure of the electronic component module which concerns on other Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a cross-sectional view showing the configuration of an electrical junction box including an electronic component module according to an embodiment of the present invention.

As shown in FIG. 1, the electrical connection box 1 has a tubular box body 21 having substantially rectangular openings in the plan shape at the top and bottom, and a lid 22 and a bottom 23 for closing the top and bottom openings of the box body 21. The housing, the electronic component module 10 mounted by being inserted into the housing from above along the vehicle height direction, and the fuse and other electrical components that cooperate with the electronic component module 10 housed in the housing. The electric component group 30 including the electric component group 30 is provided as a main configuration.

The electronic component module 10 is divided into a connector connection portion 11 located upward along the vehicle height direction in the electrical connection box 1 and a circuit mounting portion 12 located directly below the connector connection portion 11. The connector connection portion 11 is a portion for connecting to the harness connector 40 provided at the end of the harness 41 for connecting to the electrical component group 30 inside the electrical junction box 1 and the electrical components outside the electrical junction box 1. , The circuit mounting unit 12 is a portion where a plurality of relays are mounted on a circuit board as an example.

The box body 21, the lid 22, and the bottom 23 are parts made of a polypropylene composite material, which are produced by injection molding, as in the conventional housing. A part of the side surface of the box body 21 is open as a notch 21x, and the electronic component module 10 is arranged so as to close the notch 21x and form a side wall of the box body 21. Further, the lid portion 22 is provided with an opening 22x that communicates with the inside of the box main body 21 corresponding to the position of the electrical component group 30. The bottom portion 23 is provided with a ventilator 23x for draining and ventilating water that communicates with the inside of the box body 21.

Next, the configuration of the electronic component module 10 will be described with reference to the front view of FIG. 2A and the side view of FIG. 2B. However, FIG. 2B is a cross-sectional view of a main part taken along the line AA of FIG. 2A, and is a diagram imaginatively showing a state of being housed in the electrical connection box 1.

As shown in each figure, the electronic component module 10 includes a connector connecting portion 11, a circuit mounting portion 12 integrally molded with the connector connecting portion 11, and a lower cover 14 which is an exterior of the circuit mounting portion 12, and each part includes a lower cover 14. , A polypropylene composite material produced by injection molding, particularly containing glass fiber or the like, is used as a material.

The connector connection portion 11 is divided into a frame body 11a forming an fitting inlet 11x into which the harness connector 40 is fitted, and a shielding wall 11b integrally molded with the frame body 11a and adjacent to the circuit mounting portion 12. The fitting openings 11x are arranged in a substantially horizontal row as an example in the drawing, and metal connection terminals 11y for electrically connecting to the harness connector 40 are arranged in each fitting inlet 11x.

Further, the shielding wall 11b is a portion having a thickness larger than the other portions of the frame body 11a, and is formed over the entire width of the connector connecting portion 11 and the circuit mounting portion 12, and the fitting inlet 11x of the connector connecting portion 11 and a portion described later. Separate the circuit mounting unit 12 from the circuit mounting unit 12.

The circuit mounting unit 12 is a member having a substantially rectangular shape and a planar shape extending from directly below the connector connecting portion 11 and having substantially the same width as the connector connecting portion 11, and mounts active elements, passive elements, and other electronic components. Functions as a board. In this embodiment, a plurality of relays 13 are mounted as an example. The connection between the electronic components included in the circuit mounting unit 12 including the relays 13 and the connection between the relay 13 and the harness connector of the connector connecting unit 11 are mounted on or inside the circuit mounting unit 12, as shown in the figure. Not done via wiring.

The lower cover 14 is provided along the outer periphery of the circuit mounting portion 12, is combined and integrated on the back surface of the connector connecting portion 11, constitutes a peripheral wall of the electronic component module 10 including the side wall 16, and mounts the relay 13. It is a member to be arranged. As shown in FIGS. 1 and 3, the lower cover 14 fits into the lid 22 of the electrical connection box 1 and closes the notch 21x of the box body 21 to form an outer wall 24 which is a wall body of the box body 21. Exposed to the outside.

Further, in the shielding wall 11b of the connector connecting portion 11, a front cover 18 extending substantially parallel to the main surface of the circuit mounting portion 12 is fitted and arranged in the fitting groove 17 integrally molded with the shielding wall 11b. To. Further, the lower end of the lower cover 14 forms a slope 15 that is separated from the front cover 18 through a gap 10x that serves as a ventilation port.

In the above configuration, the electrical junction box 1 corresponds to the electronic junction box of the present invention, and the electronic component module 10 corresponds to the electronic component module of the present invention. Further, the combination of the connector connecting portion 11, the circuit mounting portion 12, and the lower cover 14 corresponds to the housing of the electronic component module of the present invention, and the connector connecting portion 11, the circuit mounting portion 12, and the shielding wall 11b are the connectors of the present invention, respectively. Corresponds to the connection part, circuit mounting part, and shielding wall. Further, the lower cover 14 corresponds to the wall body portion of the present invention.

Since the electronic component module 10 according to the embodiment of the present invention has the above configuration, the connector connection portion 11 is connected to the circuit mounting portion 12 along the vertical direction corresponding to the insertion / removal direction of the electronic component module 10. Is also arranged above so that the connection with the harness connector 40 can be made from the upper side in the vehicle height direction. As a result, when assembling the electronic component module 10 to the electrical connection box 1, it is possible to easily connect the harness connector 40 by fitting it into the fitting inlet 11x and check the fitting state of the harness connector 40 after the connection. It is possible to improve workability.

Further, the electronic component module 10 of the present embodiment is integrally molded with the frame body 11a of the connector connecting portion 11 between the connector connecting portion 11 and the circuit mounting portion 12, and is provided with a thick shielding wall 11b. As a result, the following effects are achieved. That is, by configuring the connector connection portion 11 to be arranged above the circuit mounting portion 12, heat radiation from the relay 13 mounted on the circuit mounting portion 12 is directed upward to the connector connecting portion 11 and the harness connector. When there is a concern that the 40 may be affected, the heat from the circuit mounting portion 12 can be shielded to protect the connector connecting portion 11 and the harness connector 40 by interposing the shielding wall 11b.

Further, in the electronic component module 10 according to the embodiment of the present invention, the lower cover 14 forms an outer wall 24 which is a wall body of the box body 21 and is exposed to the outside. As a result, the heat generated by the relay 13 mounted on the circuit mounting portion 12 is directly discharged to the outside from the electrical junction box 1 via the lower cover 14, and the connector connecting portion 11 and the harness connector of the electronic component module 10 are discharged. In addition to the protection of 40, it is possible to suppress overheating of the circuit mounting unit 12.

Therefore, according to the electronic component module 10 of the present embodiment, even when the connector connection portion 11 is arranged vertically above the circuit mounting portion 12, the material of the housing of the electronic component module is used. It is possible to use the same one as before without considering the heat resistance again, and it is possible to suppress an increase in manufacturing cost and the like.

As described above, the electronic component module 10 of the present embodiment has the effect of making it possible to improve workability when assembling the electrical junction box to the electronic component module.

However, the present invention is not limited to the above embodiments. In the present invention, as shown in the configuration example of FIG. 4, a through hole 11z penetrating from the fitting inlet 11x of the connector connecting portion 11 to the surface facing the lower cover 14 and a through hole 14x communicating with the through hole 11z are provided in the lower cover 14. It may be a provided configuration. As a result, when water or the like enters from the outside such as the opening 22x of the electrical connection box shown in FIG. 1, the invading water is discharged from the surface of the lower cover 14 through the through hole 11z and the through hole 14x. Further, it is discharged from the slope 15 to the outside. Therefore, it is possible to reduce the influence when the connector connection portion 11 and its vicinity are exposed to water. Further, the circuit mounting unit 12 is configured so that water can be discharged from the back surface side facing the main surface side on which the relay 13 is mounted, and the water is prevented from being applied to the main surface side.

In FIG. 4, the through hole 11z is provided substantially parallel to the extension direction of the fitting inlet 11x, but the through hole 11x has the lower cover 14 on the side facing the fitting entrance 11x side along the vehicle height direction. It is more preferable to form an inclined passage which is higher than the facing surface side of the above. As a result, water can easily escape from the through hole 11x, and the effect of preventing water reception can be enhanced. Further, in FIG. 4, an eaves portion 11E serving as a guide for facilitating the flow of water to the through hole 14x side is provided directly above the through hole 11z, but this may be omitted.

Further, as shown in the configuration example of FIG. 5, the present invention provides a slit as the connector connecting portion 11 on the shielding wall 11b along the width direction of the connector connecting portion 11 and having substantially the same depth as the fitting inlet 11x. It may be a configuration in which 11s is formed. As a result, the shielding wall 11b contains an air layer whose thermal conductivity is smaller than that of the resin material of the connector connecting portion 11 due to the slit 11s, which improves the effect of shielding heat from the circuit mounting portion 12 and improves the effect of shielding the heat from the circuit mounting portion 12. 11 and the harness connector 40 can be protected more effectively.

Further, in the above description, the shielding wall 11b of the connector connecting portion 11 is integrally molded with the frame body 11a forming the fitting inlet 11x into which the harness connector 40 is fitted, but the shielding wall of the present invention is , The shielding wall 11c in the configuration example of FIG. 6 may be configured as a separate member from the connector connecting portion 11 and the circuit mounting portion 12. In short, the shielding wall of the present invention may be disposed between the connector connection portion and the circuit mounting portion so as to reduce the influence of heat from the circuit mounting portion on the connector connection portion, and a specific configuration thereof. Not limited by.

Further, in the above description, the housing of the electronic component module is composed of a combination of the connector connection portion 11 including the shielding wall 11b, the circuit mounting portion 12, and the lower cover 14, but the present invention includes the connector connection portion and the lower cover 14. It suffices as long as it is provided with a circuit mounting portion and a shielding wall arranged between them, and is not limited by other specific configurations. Therefore, for example, in each of the above embodiments, the lower cover 14 may be omitted, or the connector connection portion 11, the circuit mounting portion 12, and the lower cover 14 may be realized as an integrally molded configuration. You may.

Further, in the above description, in the electronic component module 10, the shielding wall 11b is arranged between the connector connecting portion 11 and the circuit mounting portion 12, and the lower cover 14 forms the outer wall 24 of the electrical connection box 1. Although it is assumed that both the configurations are provided so as to be exposed to the outside, the present invention may be provided with only one of the configurations. As an example, in the configuration example shown in FIG. 7, the electronic component module 10 has only a configuration in which a shielding wall 11b is arranged between the connector connecting portion 11 and the circuit mounting portion 12, and the box main body 21 is an outer wall in the electrical connection box 1. 24 is provided, and the lower cover 14 of the electronic component module 10 is located inside the outer wall 24.

Further, in the above description, the electrical junction box 1 is a device that supplies power to electrical components for vehicles, but the electronic junction box of the present invention allows the electronic component module to be freely inserted and removed along the vertical direction. It suffices if it can be attached to, and is not limited by other specific configurations, uses, functions, and the like.

As described above, the present invention is a housing of an electronic component module that can be freely inserted and removed along the vertical direction with respect to an electrical connection box, and a connector used for wiring, which is located above the vertical direction, is connected to the housing. It is arranged between the connector connection portion to be formed, a circuit mounting portion where a circuit including an electronic component is mounted, located vertically below the connector connection portion, and the connector connection portion and the circuit mounting portion. It may be provided with a shielding wall, and is not limited by other specific purposes, uses, and configurations.

Further, the present invention is a housing of an electronic component module that is freely inserted and removed along the vertical direction with respect to an electrical junction box, and is a connector on which a connector used for wiring is mounted, which is located above the vertical direction. A wall that is exposed to the outside as an outer wall of the electrical junction box when the connection portion, a circuit mounting portion that is located vertically below the connector connection portion and on which a circuit including electronic components is mounted, and the electrical junction box are mounted. It may be provided with a body part, and is not limited by other specific purposes, uses, and configurations.

Therefore, the present invention may be carried out as if various modifications were made to the above-described embodiment, including those described above, as long as the present invention does not deviate from the gist thereof.

The present invention as described above has an effect that workability can be improved when assembling an electric connection box to an electronic component module, and is useful, for example, in application to a relay box of a vehicle such as an automobile.

1 Electrical connection box 10 Electronic component module 10x Gap 11 Connector connection part 11a Frame body 11b, 11c Shielding wall 11E Eaves part 11s Slit 11x Fitting inlet 11y Connection terminal 11z Through hole 12 Circuit mounting part 13 Relay 14 Lower cover 14x Through hole 15 Slope 16 Side wall 17 Fitting groove 18 Front cover 21 Box body 21 x Notch 22 Lid 22 x Opening 23 Bottom 23 x Ventilator 24 Outer wall 30 Electrical components 40 Harness connector 41 Harness

Claims (1)

It is a housing of an electronic component module that can be freely inserted and removed along the vertical direction with respect to the electrical junction box.
The connector connection part to which the connector used for wiring is connected, which is located above in the vertical direction,
A circuit mounting part on which a circuit including electronic components is mounted, which is located vertically below the connector connecting part, and
A wall body portion that is exposed to the outside as an outer wall of the electric junction box when attached to the electrical junction box is provided.
The housing of the electronic component module.

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