WO2018150866A1

WO2018150866A1 - Electrical connection box having wireless receiving function

Info

Publication number: WO2018150866A1
Application number: PCT/JP2018/003017
Authority: WO
Inventors: 浩之麻生
Original assignee: 住友電装株式会社
Priority date: 2017-02-17
Filing date: 2018-01-30
Publication date: 2018-08-23
Also published as: JP2018133757A

Abstract

Provided is an electrical connection box having a wireless receiving function, the electrical connection box comprising a novel structure with which it is possible to accommodate and dispose in the interior an antenna having the necessary length while avoiding an increase in size for the entirety, including a wireless receiver. An electrical connection box 10 having a wireless receiving function for which a wireless receiving circuit 16 is accommodated inside cases 12, 14, wherein said box 10 comprises an antenna 38 configured from a covered electric wire 40 and having one end part connected to the wireless receiving circuit 16, and an antenna holding part 36 including a plurality of resin projections 34a, 34b. The covered electric wire 40 constituting part of the antenna 38 being wrapped around the resin projections 34a, 34b of the antenna holding part 36 and being installed and fixed in a curved state.

Description

Electrical junction box with wireless reception function

The present invention relates to an electrical junction box for automobiles, and more particularly to an electrical junction box with a radio reception function having a radio reception function.

In recent years, remote keyless entry systems that can unlock and lock automobile doors without inserting a key into a key hole have been widely adopted. Such a system uses a remote key for transmission carried by an occupant or a smart key for transmission / reception, and a signal transmitted from these keys is received and received by a radio receiver having an antenna connected to a radio reception circuit. The signal is sent to the body electronic control unit including the door lock control unit connected to the wireless receiver, and the door lock mechanism is automatically controlled by the body electronic control unit to unlock and lock the door. Is going.

As one element constituting such a system, an electric connection box with a wireless reception function is used. For example, as shown in FIG. 12 of Japanese Patent No. 5044495 (Patent Document 1), an antenna is provided. A wireless receiver provided on an electrical junction box, or a radio receiver circuit having an antenna accommodated in an electrical junction box as described in FIG. 13 of the same Patent Document 1. Are known. In such a system, the length of the antenna needs to be at least λ / 4 of the wavelength λ of the received radio wave (approximately 20 to 25 cm), so an increase in the size of the electric junction box with a radio reception function is inevitable. A wide mounting space was needed.

Therefore, in order to avoid an increase in the size of the electrical junction box, as described in FIGS. 1 and 2 of Patent Document 1, an antenna is formed on a part of the side edge of the electronic control board accommodated in the electrical junction box. Instead of arranging the antenna, the antenna is formed by forming the antenna with a metal bar or bus bar having one end connected to the radio reception circuit of the substrate, and arranging the antenna along the inner surface of the outer peripheral wall of the case of the electrical connection box. A configuration for ensuring the safety has been proposed. According to such a configuration, since the portion along the inner surface of the case is often a dead space, it is easy to increase the separation distance from other board mounting components while avoiding an increase in the size of the electrical junction box. It was possible to secure.

However, recently, the demand for further miniaturization has increased, and it may be difficult to configure the antenna for the remote keyless entry system using a metal bar or bus bar. Therefore, there is a need for a new method capable of realizing an electrical junction box in which such an antenna can be accommodated and arranged in a compact manner inside the electrical junction box.

Japanese Patent No. 50444695

The present invention has been made in the background as described above, and the problem to be solved is that an antenna having a required length is accommodated and disposed inside while avoiding the enlargement of the whole including the radio receiver. An object of the present invention is to provide an electrical junction box with a wireless reception function having a novel structure that can be used.

According to a first aspect of the present invention, there is provided an electrical connection box with a wireless reception function in which a wireless reception circuit is housed in a case, an antenna configured by a covered electric wire and having one end connected to the wireless reception circuit, and a plurality of antennas And an antenna holding part configured to include the resin protrusion, and the covered electric wire constituting the antenna is wound around the resin protrusion of the antenna holding part and fixed in a curved state. .

According to this aspect, the antenna is constituted by the covered electric wire, and the antenna is formed by winding the covered electric wire constituting the antenna around the plurality of resin protrusions constituting the antenna holding portion and installing and fixing in a curved state. . Therefore, compared to the case where the antenna is formed by using a metal bar or bus bar as in the past, the antenna is formed by the covered wire, so that insulation between the members constituting the antenna or between other members is reduced. It is not necessary to secure a gap in consideration, and the antenna can be accommodated in a compact manner because it can be bent and bent in any curved state and wound around a plurality of resin protrusions constituting the antenna holding portion. Thus, it is possible to advantageously realize that an antenna having a required length is accommodated and arranged inside the electrical junction box while avoiding an increase in size of the electrical junction box.

According to a second aspect of the present invention, in the one described in the first aspect, the antenna holding portion is configured by a wiring insulating plate, and the plurality of resin protrusions formed on the wiring insulating plate. It is what.

According to this aspect, the plurality of resin protrusions constituting the antenna holding portion can be configured using the resin protrusions formed on the wiring insulating plate. By using the wiring insulating plate conventionally used for the wiring of the covered electric wire, the antenna holding portion can be advantageously configured. Furthermore, when the wiring circuit is accommodated in the electrical junction box and already provided with a wiring insulating plate, a wireless reception function is provided by forming an antenna using a part of the wiring insulating plate. It is possible to advantageously realize further downsizing of the attached electrical junction box.

A third aspect of the present invention is the one described in the first or second aspect, wherein the antenna holding portion is formed on the inner surface of the case.

According to this aspect, the antenna holding part is formed on the inner surface of the case of the electrical junction box. Thus, by forming the antenna holding part on the inner surface of the case of the existing electrical junction box, it is not necessary to newly form a member for forming the antenna holding part, and the inner surface of the case that is not generally used can be effectively used. As a result, it is possible to further advantageously reduce the size of the electrical junction box.

According to a fourth aspect of the present invention, in the device according to any one of the first to third aspects, the wireless reception circuit is provided on a printed circuit board, and the antenna holding unit is provided on the printed circuit board. The formed wiring insulating plates are stacked and arranged.

According to this aspect, the wiring insulating board on which the antenna holding portion is formed can be stacked and assembled on the printed circuit board on which the wireless reception circuit is provided, and is accommodated and arranged in the case in a high density state. This can contribute to miniaturization of the electrical junction box.

According to a fifth aspect of the present invention, in the one described in any one of the first to fourth aspects, a press-fit terminal is provided at the one end of the antenna, while the wireless reception circuit is The press-fit terminal is press-fitted and connected to a through hole provided on a printed circuit board and connected to the wireless receiving circuit.

According to this aspect, since the press-fit terminal is provided at one end of the antenna, the press-fit terminal is press-fitted into the through-hole connected to the radio reception circuit with respect to the radio reception circuit provided on the printed circuit board. It is possible to connect the antenna to the wireless reception circuit simply by doing so. As a result, even when soldering is difficult, the antenna and the radio receiving circuit can be easily connected.

According to a sixth aspect of the present invention, in the device according to any one of the first to fifth aspects, the covered electric wire constituting the antenna is held in the antenna holding portion in a state of being bent in a zigzag shape. The antenna has a meander shape.

According to this aspect, the shape of the antenna is a meander type. Such a meander-type antenna has a shape in which covered wires are meandered in a zigzag shape, and therefore, the length of the entire antenna can be gained in a narrow arrangement space. As a result, it is possible to reduce the size of the electric junction box by reducing the space for arranging the antenna.

According to the present invention, the antenna is constituted by the covered electric wire, and the antenna is formed by winding the covered electric wire constituting the antenna around the plurality of resin protrusions constituting the antenna holding portion and installing and fixing in a curved state. . Therefore, it is not necessary to secure a gap in consideration of insulation between members constituting the antenna or between other members as compared to the case where the antenna is formed using a metal bar or bus bar as in the past, and Since it can be bent and can be wound and held around the antenna holding portion in an arbitrary curved state, it is advantageous to accommodate and arrange an antenna having a required length inside the electric junction box while avoiding an increase in the size of the electric junction box. realizable.

It is a perspective view which shows the electric connection box with a wireless reception function as 1st embodiment of this invention, Comprising: The figure which decomposed | disassembled only the case up and down. The whole perspective view which shows the state which assembled | attached the case in FIG. FIG. 3 is an enlarged view of a principal part taken along the line III-III in FIG. 1. The bottom view of the wiring insulation board shown in FIG. It is a perspective view which shows the electrical connection box with a radio | wireless reception function as 2nd embodiment of this invention, Comprising: The figure corresponded in FIG. The perspective view which shows the electrical-connection box with a radio | wireless receiving function as 3rd embodiment of this invention.

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

1 to 4 show an electrical connection box 10 with a wireless reception function as a first embodiment of the present invention. As shown in FIG. 1, an electrical junction box 10 with a wireless reception function is a case formed by injection molding or the like with a synthetic resin such as polyamide (PA), polycarbonate (PC), polyphthalamide (PPA), etc. The printed circuit board 18 provided with the wireless receiving circuit 16 is accommodated between the upper case 12 and the lower case 14. In the following description, unless otherwise specified, the upper direction is the upper side in FIGS. 1 to 3, the lower side is the lower side in FIGS. 1 to 3, the front is the left side in FIGS. “Back” means the right side in FIGS. For ease of understanding, the press-fit terminals 42 described later in FIGS. 1 and 2, the upper case 12 and the lower case 14 in FIG. 2, and the covered electric wires 40 described in FIG. is doing.

As shown in FIGS. 1 and 2, the upper case 12 and the lower case 14 have a substantially rectangular shallow box shape opening toward each other. The upper case 12 and the lower case 14 are engaged by, for example, engaging hooks (not shown) provided in the upper case 12 being inserted through engagement frames (not shown) provided in corresponding portions of the lower case 14. As a result, they can be assembled together. In addition, a bracket mounting portion (not shown) is provided on a peripheral wall of the upper case 12 or the lower case 14 at an appropriate distance in the circumferential direction, and a bracket (not shown) provided on the vehicle body side is attached to the electric power with wireless reception function. The connection box 10 is mounted and fixed at an appropriate position of the vehicle.

On the other hand, as shown in FIG. 1, the printed circuit board 18 has a substantially rectangular flat plate shape made of a known insulating material such as glass epoxy resin, and the rear side of the printed circuit board 18 (FIG. 1). An IC chip 22 constituting the door lock control unit 20 is mounted at a substantially central portion on the middle and right side. The door lock control unit 20 also includes a wireless reception circuit 16 for receiving signals from a remote key and a smart key (not shown). The wireless receiving circuit 16 is configured by printed wiring, and one end side is connected to the IC chip 22 and the other end side is connected to a through hole 24 provided on the rear front side of the printed board 18. The through hole 24 is formed so as to penetrate the printed circuit board 18 with a substantially circular cross-sectional shape. A plating layer (not shown) is formed on the entire inner peripheral surface of the through hole 24, and the through hole 24. A flange-shaped land portion 28 is provided around the opening. Then, when the wireless reception circuit 16 is connected to the land portion 28 on the other end side, a not-shown plating layer applied to the inner peripheral surface of the through hole 24 and the wireless reception circuit 16 are connected to each other. ing.

In addition, as shown in FIGS. 1 and 2, the electrical connection box 10 with a radio reception function includes a wiring insulating plate 30 between the upper case 12 and the lower case 14. The wiring insulation board 30 is made into the substantially rectangular flat plate shape, and is formed with the synthetic resin material provided with the electrical insulation. Further, as shown in FIG. 4, a part of the bottom surface 32 of the wiring insulating plate 30 protrudes downward (in FIG. 4, upward in the direction perpendicular to the paper surface) with a substantially circular cross-sectional shape. A plurality (28 in this embodiment) of resin protrusions 34a and a pair of

resin protrusions

34b, 34b protruding in a substantially convex cross section are integrally formed. A plurality (28 in the present embodiment) of resin protrusions 34a are approximately 10 in a state where they are separated by a predetermined distance on the rear front side (right lower side in FIG. 4) of the bottom surface 32 of the wiring insulating plate 30. While arranged in rows and 3 columns, a pair of

resin protrusions

34b and 34b are arranged opposite each other at a predetermined distance on the front side of the rear end portion (the lower right side in FIG. 4). Thus, the

resin protrusions

34a and 34b are arranged in 10 rows and 3 columns to constitute the antenna holding portion 36. In addition, although illustration is abbreviate | omitted, many resin protrusions protrude in the other area | region and surface 37 of the bottom face 32 of the wiring insulation board 30, and the covered electric wire 40 is wound by arbitrary circuit shapes, and a wiring circuit is carried out. It is configured. An external connection terminal that constitutes a connector or the like that penetrates the printed circuit board 18, the upper case 12, and the lower case 14 is pressed and held at an arbitrary portion of the wiring circuit.

More specifically, in the antenna holding portion 36, the separation distance between the

resin protrusions

34a, 34a, 34a, 34b, 34b, 34b adjacent in the front-rear direction (vertical direction in FIG. 4) is substantially constant dimension: a. ing. Then, as shown in FIG. 4, the covered electric wire constituting the antenna 38 with respect to the gap between the

resin protrusions

34 a, 34 a, 34 a, 34 b, 34 b, 34 b adjacent in the front-rear direction in the antenna holding portion 36. The meander-type antenna 38 is configured by the covered electric wire 40 by holding the wire 40 in a zigzag bent state on the antenna holding portion 36. Further, here, the separation distance a between the

adjacent resin protrusions

34a, 34a, 34a, 34b, 34b, 34b is formed to be slightly smaller than the outer diameter dimension b of the covered electric wire 40. The covered electric wire 40 is wound around the

resin protrusions

34a and 34b and is installed and fixed in a curved state.

By the way, the meander type antenna 38 is configured to satisfy the following equation (1). That is, it can be seen from Equation 1 that the antenna width: W or the length at the time of antenna bending: L can be reduced by increasing the number of times of antenna bending: n. Therefore, the area of the antenna holding part 36 constituting the antenna 38 can be reduced by the shape in which the covered electric wire 40 is meandered in a zigzag manner.

Further, as shown in FIGS. 1 to 4, press fit from above (in FIG. 4, downward in the direction perpendicular to the paper surface) with respect to the pair of

resin protrusions

34 b and 34 b (see FIG. 4) of the antenna holder 36. A terminal 42 is attached (see FIGS. 1 and 2). The press-fit terminal 42 is a substantially flat-shaped terminal fitting made of a metal material having excellent conductivity such as a copper alloy, and the tip portion is, for example, a needle eye-type press-fit portion 44. The proximal end portion is a pressure contact portion 46. More specifically, a needle eye-shaped through-hole 48 extending in the longitudinal direction (vertical direction in FIGS. 1 and 2) is provided at the center in the width direction of the press-fit portion 44, thereby forming a spring in the width direction. It has come to be. On the other hand, the pressure contact portion 46 has a substantially rectangular cross section formed on the surface 37 of the wiring insulating plate 30 because the base end portion is bifurcated and the end portion is bent outwardly. The through-hole 50 having a shape is inserted into the gap between the pair of

resin protrusions

34b, 34b and fixed (see FIG. 3). As shown in FIG. 3, in this state, the opposing portion branched into the fork of the proximal end portion of the pressure contact portion 46 is exposed in the gap between the pair of

resin protrusions

34 b and 34 b, and the opposing portion The other parts are accommodated in the pair of

resin protrusions

34b, 34b.

Then, as shown in FIGS. 3 to 4, one end of the covered electric wire 40 constituting the antenna 38 with respect to the gap between the pair of

resin protrusions

34b, 34b in which the pressure contact portions 46 are arranged in this way. The part is pushed in. The covered electric wire 40 is an electric wire in which an outer peripheral surface of a core wire 52 formed of a conductive metal material such as copper is covered with an insulating coating 53 such as soft polyvinyl chloride. The covered electric wire 40 is fitted into a press-contact portion 46 formed at the base end portion of the press-fit terminal 42 that is bifurcated, so that the insulating coating 53 is partially peeled off, and the press-contact portion 46 of the press-fit terminal 42. It is designed to be pressure-welded to. Therefore, the core wire 52 and the pressure contact portion 46 are electrically connected to one end portion of the covered electric wire 40 constituting the antenna 38, and the press-fit terminal 42 is provided to one end portion of the antenna 38.

As shown in FIG. 1, wireless reception is performed from above with respect to the wiring insulating plate 30 in which the covered electric wire 40 is wired and the press-fit terminal 42 is connected to one end of the covered electric wire 40. A printed circuit board 18 provided with a circuit 16 is placed. More specifically, the press-fit formed at the tip end portion of the press-fit terminal 42 that protrudes through the through hole 50 of the wiring insulating plate 30 with respect to the through hole 24 connected to the other end side of the wireless receiving circuit 16. The part 44 is press-fitted and connected.

As shown in FIGS. 1 and 2, the wiring insulating plate 30 on which the printed circuit board 18 is thus placed is accommodated between the upper case 12 and the lower case 14, so that the wireless communication device of the present invention can be used. The electrical connection box with reception function 10 is completed. More specifically, first, the wiring insulating plate 30 on which the printed circuit board 18 is placed is accommodated in the lower case 14 that opens upward. The wiring insulating plate 30 is fixed to the lower case 14 by fixing means (not shown) such as screwing as required. Subsequently, the opening of the lower case 14 is covered with the upper case 12, and the upper case 12 and the lower case 14 are assembled to each other by engagement means (not shown).

According to the electrical connection box 10 with the wireless reception function of the present embodiment having such a structure, the

resin holding projections

34a and 34b are covered with the antenna holding portion 36 formed on the bottom surface 32 of the wiring insulating plate 30. The antenna 38 is configured by winding and fixing the electric wire 40 in a curved state. Since the antenna 38 is constituted by the covered electric wire 40 in this way, compared with the case where the antenna is formed using a conventional metal rod or bus bar, between the members constituting the antenna 38 or between other members. It is not necessary to secure a gap in consideration of insulation. Further, since the covered electric wire 40 constituting the antenna 38 is bendable, it can be installed and fixed by being wound around the

resin protrusions

34a and 34b constituting the antenna holding portion 36 in an arbitrary curved state. . Therefore, since the antenna 38 can be formed compactly, the antenna 38 having the required length can be connected to the electrical connection box with a wireless reception function while avoiding an increase in the size of the electrical connection box 10 with a wireless reception function. It is possible to advantageously realize the housing and arrangement in the interior of 10.

Furthermore, in this embodiment, the antenna holding part 36 for winding and fixing the covered electric wire 40 which comprises the antenna 38 is provided in the wiring insulation board 30 which comprises the existing wiring circuit. That is, the antenna holding part 36 can be advantageously configured by using the wiring insulating plate 30 conventionally used for the wiring of the covered electric wire 40. In addition, in the present embodiment, since the wiring insulating plate 30 is provided in advance in the electrical connection box 10 with the wireless reception function, a part of the wiring insulating plate 30 is used as the antenna holding portion 36 and the antenna 38. By configuring the above, it is possible to advantageously realize further downsizing of the electrical connection box 10 with a radio reception function.

In addition, in the present embodiment, the shape of the antenna 38 is a meander type, and the antenna 38 is configured by a shape in which the covered electric wire 40 is meandered in a zigzag manner. Therefore, it is possible to reduce the area of the antenna holding portion 36 in which the antenna 38 is disposed, while taking advantage of the advantage that the antenna 38 is configured by the covered electric wire 40, and it is advantageous to further reduce the size of the electric connection box 10 with a wireless reception function. Can be realized. In addition, a press-fit terminal 42 is provided at one end of the antenna 38, and the press-fit terminal 42 is press-fitted into and connected to the through-hole 24 provided in the printed circuit board 18, thereby allowing wireless communication via the through-hole 24. An antenna 38 can be connected to the receiving circuit 16. Therefore, even if soldering is difficult, the antenna 38 can be easily connected to the radio reception circuit 16.

As mentioned above, although embodiment of this invention has been described, this invention is not limited at all by the specific description in this embodiment. For example, in the first embodiment, the antenna 38 is configured by using a partial region of the wiring insulating plate 30 that is already in the electrical connection box 10 with the wireless reception function as the antenna holding portion 36. When there is no existing wiring insulation board 30 as in the electrical connection box with wireless reception function 54 as the second embodiment of the present invention shown in FIG. 5, a new wiring insulation board 56 may be provided. Good. That is, the newly provided wiring insulation board 56 is equivalent to what cut out only the antenna holding | maintenance part 36 part of the wiring insulation board 30 in said 1st embodiment, and is not the bottom face 32 but antenna 58 on the surface 58. A holding unit 60 is provided. In the antenna holding part 60, a pair of

resin protrusions

34b, 34b are formed on the rear front side. Further, in this embodiment, for easy understanding, the

resin protrusions

34a and 34b are described in two rows, while the covered electric wire 40 constituting the antenna 38 is described by a linear virtual line.

Also in the present embodiment, in the same manner as in the first embodiment, the wired insulating plate 56 in which the covered electric wire 40 is wired and the press-fit terminal 42 is connected to one end of the covered electric wire 40 is configured. Can do. Then, by placing the wiring insulating plate 56 on the printed circuit board 18 from above, it is formed at the distal end portion of the press-fit terminal 42 with respect to the through hole 24 connected to the other end side of the wireless receiving circuit 16. The press-fit portion 44 can be press-fitted and connected. As a result, the wiring insulating plate 56 in which the antenna holding portion 60 is formed on the surface 58 is laminated on the printed circuit board 18. Then, the printed circuit board 18 on which the wiring insulating plate 56 is thus placed is accommodated between the upper case 12 and the lower case 14 to complete the electrical connection box 54 with a wireless reception function of the present invention. It has come to be. Also in this embodiment, since the wiring insulation board 56 in which the antenna holding part 60 is formed can be stacked and assembled on the printed circuit board 18 on which the wireless reception circuit 16 is provided, they are in a high density state. Thus, it can be accommodated between the upper case 12 and the lower case 14 and can contribute to the miniaturization of the electrical connection box 54 with a radio reception function.

In the first embodiment, the antenna 38 is configured by using a part of the wiring insulating plate 30 that is already in the electrical connection box 10 with the wireless reception function as the antenna holding unit 36. In the case where there is no existing wiring insulation plate 30 as in the electrical connection box 62 with a wireless reception function as the third embodiment of the present invention shown in FIG. 6, an antenna holding portion 66 is formed on the inner surface 64 of the lower case 14. May be. That is, in this embodiment, since the press-fit terminal 42 is not provided, the antenna holding portion 66 is configured only by the resin protrusion 34a, while the covered electric wire 40 and the wireless reception circuit 16 that configure the antenna 38 are provided. The connection is performed by soldering a core wire (not shown) of the covered electric wire 40 to the pad portion 68 connected to the other end side of the wireless reception circuit 16. In this embodiment as well, for easy understanding, the resin protrusions 34a are described in two rows, while the covered electric wires 40 constituting the antenna 38 are described by linear virtual lines.

In the present embodiment, the printed circuit board 18 provided with the wireless receiving circuit 16 is accommodated in the lower case 14 in which the antenna holding portion 66 is provided on the inner surface 64 and the covered electric wire 40 is wired on the antenna holding portion 66, and the opening portion By covering with the upper case 12, the electrical connection box 62 with a wireless reception function of the present invention is completed. In the present embodiment, by forming the antenna holding portion 66 on the inner surface 64 of the existing lower case 14, a member for newly forming the antenna holding portion 66 is not required, and the inner surface 64 of the lower case 14 that is not generally used. Therefore, it is possible to more advantageously realize further downsizing of the electrical connection box 62 with a wireless reception function. It goes without saying that the same configuration can be provided on the inner surface of the upper case 12. Further, when there is an existing wiring insulating plate 30, the antenna holding portion may be formed not only on the inner surface 64 of the lower case 14 but also on the existing wiring insulating plate 30. As a result, the antenna 38 having a required length can be accommodated and arranged in a more compact manner inside the electrical connection box with a wireless reception function.

In addition, in the above embodiment, the shape of the antenna 38 is a meander type having a shape in which the covered electric wire 40 is meandered in a zigzag shape. However, a known shape such as a linear dipole antenna or a looped loop antenna is known. Any shape of antenna can be employed. In the first and second embodiments, the radio reception circuit 16 and the antenna 38 are connected without using the press-fit terminal 42. However, the radio reception circuit 16 and the antenna 38 are connected by soldering the press-fit terminal 42. The circuit 16 and the antenna 38 may be connected. Further, the press-fit terminal 42 provided at one end of the covered electric wire 40 constituting the antenna 38 may be connected via the press-contact portion 46 as in the illustrated embodiment, or the core wire is connected to the end of the press-fit terminal. A crimp portion may be provided and the core wire 52 of the covered electric wire 40 may be crimped and connected to the core wire crimp portion.

In the above embodiment, the electric connection box with

wireless reception function

10, 54, 62 capable of receiving wireless signals from a remote key or smart key used in the remote keyless entry system has been described as an example. In addition to this, the invention can of course be provided as an electrical connection box with a wireless reception function capable of receiving an arbitrary wireless signal such as a wireless signal from a tire pressure sensor.

10, 54, 62: Electrical connection box with wireless reception function, 12: Upper case (case), 14: Lower case (case), 16: Wireless reception circuit, 18: Printed circuit board, 24: Through hole, 30, 56: Cloth Wire insulation plate, 34a, b: resin protrusion, 36, 60, 66: antenna holding part, 38: antenna, 40: covered electric wire, 42: press-fit terminal, 64: inner surface

Claims

In the electrical connection box with a radio reception function in which a radio reception circuit is accommodated in the case,
An antenna constituted by a covered electric wire and having one end connected to the wireless receiving circuit;
An antenna holding portion configured to include a plurality of resin protrusions,
An electric connection box with a radio reception function, wherein the covered electric wire constituting the antenna is wound around the resin protrusion of the antenna holding portion and fixed in a curved state.
The electrical connection box with a wireless reception function according to claim 1, further comprising: a wiring insulating plate, wherein the antenna holding portion is configured by the plurality of resin protrusions formed on the wiring insulating plate.
The electric connection box with a wireless reception function according to claim 1 or 2, wherein the antenna holding portion is formed on an inner surface of the case.
The wireless reception circuit is provided on a printed circuit board, and the wiring insulating plate on which the antenna holding portion is formed is stacked on the printed circuit board. Electrical junction box with wireless reception function.
The one end of the antenna is provided with a press-fit terminal, while the wireless receiving circuit is provided on the printed circuit board, and the press-fit terminal is press-fitted into a through hole connected to the wireless receiving circuit. The electrical connection box with a wireless reception function according to any one of claims 1 to 4, wherein the electrical connection box has a wireless reception function.
6. The antenna according to claim 1, wherein the covered electric wire constituting the antenna is held by the antenna holding portion in a state of being bent in a zigzag shape, and the shape of the antenna is a meander type. Electric connection box with wireless reception function.