WO2011125489A1 - 電気接続箱 - Google Patents
電気接続箱 Download PDFInfo
- Publication number
- WO2011125489A1 WO2011125489A1 PCT/JP2011/056885 JP2011056885W WO2011125489A1 WO 2011125489 A1 WO2011125489 A1 WO 2011125489A1 JP 2011056885 W JP2011056885 W JP 2011056885W WO 2011125489 A1 WO2011125489 A1 WO 2011125489A1
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- WO
- WIPO (PCT)
- Prior art keywords
- case
- opening
- connector housing
- circuit board
- opening edge
- Prior art date
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/08—Distribution boxes; Connection or junction boxes
- H02G3/16—Distribution boxes; Connection or junction boxes structurally associated with support for line-connecting terminals within the box
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0238—Electrical distribution centers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/08—Distribution boxes; Connection or junction boxes
- H02G3/086—Assembled boxes
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/08—Distribution boxes; Connection or junction boxes
- H02G3/088—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings or inlets
Definitions
- the present invention relates to an electrical junction box in which a circuit board is accommodated in a case.
- an electrical connection box described in Patent Document 1 is known as an example of an electrical connection box that is mounted on a vehicle and performs energization or disconnection of in-vehicle electrical components such as lamps and audio devices.
- a connector housing is arranged in an opening surrounded by an opening edge portion of a side wall of the case with respect to a case that accommodates a circuit structure formed by mounting electronic components on a circuit board. .
- This opening is opened downward, and is configured such that the mating connector is fitted from below. In this way, if the connector housing is arranged in the opening that opens downward, even if water adheres to the side wall of the case, the water will travel downward, so the water that has flowed will be at the end of the opening. Rarely wraps around the opening into the connector housing.
- the flow direction of water adhering to the side wall of the case and the opening edge may be at right angles.
- the water may flow from the opening edge into the opening.
- water may enter the connector housing and reach the mating surfaces of the connectors.
- An object of this invention is to provide the electrical junction box which improved waterproofness with the simple structure.
- the technology disclosed in the present specification includes a case, a circuit board accommodated in the case, and a connector housing disposed in an opening surrounded by an opening edge of a side wall of the case, and the connector housing Relates to an electrical junction box in which a mating member can be fitted from the opening, and an arcuate cutout is provided at the opening edge.
- the opening edge is provided with an arc-shaped notch, so that the water that has flowed through the side wall of the case to the notch in the opening edge is perpendicular to the notch. There is no contact. For this reason, the water which reached the notch is guided by the notch and flows down without flowing into the opening. Thereby, the penetration
- FIG. 1 is an exploded perspective view of an electrical junction box 10 according to the first embodiment.
- FIG. 2 is a perspective view of the electrical junction box 10 after the mating connector 70 is fitted.
- FIG. 3 is a front view of the electrical junction box 10 before the mating connector 70 is fitted.
- FIG. 4 is a bottom view of the electrical junction box 10 before the mating connector 70 is fitted.
- FIG. 5 is a cross-sectional view taken along the line AA in FIG.
- FIG. 6 is a front view of the electrical junction box 10 after the mating connector 70 is fitted.
- FIG. 7 is an exploded perspective view of the electrical junction box 110 according to the second embodiment.
- FIG. 8 is a perspective view of the electrical junction box 110 after the mating connector 170 is fitted.
- FIG. 9 is a front view of the electrical junction box 110 after the mating connector 170 is fitted.
- 10 is a cross-sectional view taken along the line CC in FIG.
- FIG. 1 is an exploded perspective view of an electrical junction box 10 according to the first embodiment.
- FIG. 2 shows a perspective view of the electrical junction box 10 after the mating connector 70 is fitted.
- the electrical junction box 10 includes a circuit board 60 and a case 40.
- the electrical junction box 10 is arranged between a power source (not shown) and in-vehicle electrical components (not shown) such as a lamp and a horn, and performs energization and disconnection of the in-vehicle electrical components.
- the direction of arrow A in FIGS. 1 and 2 is the front side, and the opposite direction is the back side.
- the arrow B direction in FIGS. 1 and 2 is the left side, and the opposite direction is the right side.
- let the arrow C direction side of FIGS. 1, 2 be a downward direction, and let the opposite side be an upper direction.
- the circuit board 60 is obtained by mounting an electronic product Z such as a semiconductor relay on a rectangular printed board formed by forming a conductive path (not shown) by printed wiring technology.
- the circuit board 60 is provided with a moisture-proof insulating coating (formation of a thin film by applying a liquid resin by spraying or the like) after mounting electronic components, and water adheres to the circuit board 60 due to condensation or the like. However, the electrical performance is not affected.
- a pair of screw holes 62 and 62 are provided on the left and right sides of the circuit board 60.
- a plurality of through holes SH penetrating the circuit board 60 are provided above the circuit board 60.
- the front side surface (the mounting surface of the electronic component Z) of the circuit board 60 is referred to as a front surface 60a
- the back side surface is referred to as a back surface 60b.
- the case 40 is composed of a first cover 30 and a second cover 50, has a flat shape in which the width dimension in the left-right direction is larger than the width dimension in the vertical direction, and accommodates the entire circuit board 60 therein. It is something to be made.
- the circuit board 60 is accommodated in the case 40 with the front surface 60 a side covered with the first cover 30 and the back surface 60 b side covered with the second cover 50.
- the second cover 50 is formed of a synthetic resin and includes a plate-like plate-like portion 54 and a peripheral wall 52 that rises shallowly from the periphery of the plate-like portion 54 to the front side.
- the plate-like portion 54 has a shape that is slightly larger than the circuit board 60, and the center of the lower end protrudes downward, forming a substantially pentagonal shape as a whole.
- a drain hole (not shown) is provided at the center of the lower end of the plate-like portion 54.
- the peripheral wall 52 is continuously continuous over the entire circumference of the peripheral edge of the plate-like portion 54.
- the peripheral wall 52 functions as a side wall covering the outer periphery of the circuit board 60 accommodated in the case 40.
- the first cover 30 is made of synthetic resin, and the outer shape is substantially the same as that of the second cover 50. Accordingly, like the second cover 50, the first cover 30 includes the plate-like portion 2 and the peripheral wall 22 that rises shallowly from the periphery of the plate-like portion 2 to the back side.
- the plate-like portion 2 has a shape that is slightly larger than the circuit board 60, and its lower end center protrudes downward, forming a pentagonal shape as a whole.
- a boss (not shown) that faces the screw hole 62 of the circuit board 60 when the circuit board 60 is accommodated in the case 40 is provided.
- the circuit board 60 is screwed to the boss with a screw 58 through a screw hole 62 of the circuit board 60 and attached to the back side of the first cover 30.
- the configuration of the front side of the first cover 30 will be described in detail later.
- the tip of the peripheral wall 22 of the first cover 30 comes into contact with the tip surface of the peripheral wall 52 of the second cover 50,
- the first cover 30 and the second cover 50 are fixed to each other by vibration welding.
- tip part of the surrounding walls 22 and 52 is formed in the taper shape so that it may melt easily at the time of welding.
- the first cover 30 and the second cover 50 are not provided with any openings other than the drain holes in the plate-like portions 2, 54, etc., and when the above vibration welding is performed, The entire case 40 is sealed except for the formation portion.
- the front side of the plate-like portion 2 of the first cover 30 is a portion that becomes a side wall of the case 40 when the electrical connection box 10 is arranged between the power source and the on-vehicle electrical component.
- the front side of the first cover 30 serving as the side wall of the case 40 has a pair of seats 4 and 20, three hood side walls 6, 16 and 18, a lower side wall 26, a first side wall 14, and two second side walls. 2 side walls 24 and 28.
- the pair of seats 4 and 20 are provided so as to protrude to the front side on the left and right sides below the front side of the plate-like part 2.
- the hood part side wall 6 is provided above the seat part 4 and has an opening 6a that opens downward.
- the hood part side walls 16 and 18 are provided above the seat part 20, respectively, and have 16a, 18a, and 18b opened below.
- the lower side wall 26 is a part of the surface on the front side of the plate-like portion 2 and is located between the pair of seat portions 4 and 20.
- the first side wall 14 and the second side walls 24 and 28 are provided above the lower side wall 26 and between the hood portion side wall 6 and the hood portion side walls 16 and 18.
- the second side walls 24 and 28 are formed to rise vertically from the surface of the plate-like portion 2.
- the first side wall 14 is arranged between the two second side walls 24, 28 so as to be substantially parallel to the plate-like portion 2, and is continuous with the two second side walls 24, 28.
- the first side wall 14 and the second side walls 24 and 28 form an opening 25 that opens downward.
- the opening 25 is surrounded by the first opening edge portion 14 a at the lower end of the first side wall 14, the second opening edge portions 24 a and 28 a at the lower end of the second side walls 24 and 28, and the lower side wall 26.
- a connector housing 8 is disposed in the opening 25.
- a plurality of connector housings 8 (two in this embodiment) are arranged side by side in the left-right direction, and each connector housing 8 is separated by a partition wall.
- each connector housing 8 can be fitted with a mating connector 70 (an example of a “mating member”).
- the mating connector 70 is inserted into the opening 25 from below the opening 25 along the direction parallel to the lower side wall 26, and is fitted into each connector housing 8.
- FIG. 3 shows a front view of the electrical connection box 10 viewed from the front side before the mating connector 70 is fitted.
- FIG. 4 shows a bottom view of the electrical junction box 10 before the mating connector 70 is fitted, as viewed from below.
- FIG. 5 is a cross-sectional view of the electrical junction box 10 in the vertical direction, showing a cross-sectional configuration of the AA cross section of FIG.
- FIG. 6 has shown the front view which looked at the electrical junction box 10 after the other party connector 70 was fitted from the front side.
- the first opening edge portion 14a is provided with a gentle arc-shaped cutout 12 extending from one end to the other end.
- the mating connector 70 is provided with an opposite surface 70 a on the opposite side to the surface fitted to the connector housing 8.
- the opposite surface 70 a is located on the same plane as the opening 25 in a state where the mating connector 70 is fitted to the connector housing 8.
- the fitting surface 8a with the mating connector 70 of each connector housing 8 is provided inside the opening 25 as shown in FIG.
- gaps 86 a to 86 c are provided between the surrounding wall 80 (the first side wall 14 and the two second side walls 24, 28) surrounding the connector housing 8 and the outer surface 8 b of the connector housing 8. ing. Specifically, a gap 86 b is provided between the first side wall 14 and the outer surface 8 b on the front side of the connector housing 8, and a gap 86 a is provided between the second side wall 24 and the left outer surface 8 b of the connector housing 8. A gap 86 c is provided between the second side wall 28 and the right outer surface 8 b of the connector housing 8. For this reason, the surrounding wall 80 and the outer surface 8b of the connector housing 8 are separated from each other.
- each of the bus bars B1 to B6 projecting toward the side are insert-molded.
- each of the bus bars B1 to B6 is formed by bending a metal plate into an L shape, and one end thereof protrudes into the corresponding connector housing 8.
- the other ends of the bus bars B1 to B5 are all drawn to the circuit board 60 side and are inserted into the through holes SH of the circuit board 60.
- the plate surfaces 60a and 60b of the circuit board 60 accommodated in the case 40 are in the direction of gravity (downward in FIGS. 1 and 2). 1 is arranged between the power source and the on-vehicle electrical component with the upper side in FIG. 1 as the upper side.
- 1 is arranged between the power source and the on-vehicle electrical component with the upper side in FIG. 1 as the upper side.
- the arc-shaped notch 12 is provided in the first opening edge portion 14a, so that the first opening edge portion 14a is cut along the first side wall 14.
- the water that has flowed to the notch 12 does not contact the notch 12 at a right angle. For this reason, the water that has reached the notch 12 is guided by the notch 12 and flows down below the case 40 without going into the opening 25. Thereby, the penetration
- gaps 86a to 86c are provided between the surrounding wall 80 surrounding the connector housing 8 and the outer surface 8b of the connector housing 8. As a result, even if water flows into the opening 25 from the first opening edge portion 14a, water enters the gaps 86a to 86c, thereby effectively preventing water from entering the connector housing 8. Or can be suppressed.
- the fitting surface 8 a of the connector housing 8 with the mating connector 70 is provided on the inner side from the opening 25. For this reason, the distance between the fitting surface 8a of the connector housing 8 and the mating connector 70 and the first opening edge 14a is long, and water enters the opening 25 from the first opening edge 14a. Even if it wraps around, it is difficult to reach the fitting surface 8a.
- the opposite surface 70 a of the mating connector 70 fitted in the connector housing 8 is located on the same plane as the opening 25. For this reason, when the mating connector 70 is fitted to the connector housing 8, a jig or the like is applied parallel to the opening 25, and the contact state between the jig and the opposite surface 70 a of the mating connector 70 is confirmed. Thus, the degree of fitting between the connector housing 8 and the mating connector 70 can be detected. As a result, the mating connector 70 can be reliably fitted to the connector housing 8, and water intrusion into the connector housing 8 can be effectively prevented or suppressed.
- the notch 12 is provided from one end of the first opening edge portion 14a to the other end. For this reason, the infiltration of water can be effectively prevented over the entire first opening edge portion 14a, and the waterproofness of the electrical junction box 10 is further improved.
- the circuit board 60 is accommodated in the case 40 so that the plate surfaces 60a and 60b are along the direction of gravity.
- the first opening edge 14 a is parallel to the plate surfaces 60 a and 60 b of the circuit board 60 accommodated in the case 40, and the circuit board 60 accommodated in the case 40.
- Second opening edges 24a, 28a perpendicular to the plate surfaces 60a, 60b.
- the notch 12 is provided in the first opening edge 14 a of the side wall of the case 40. For this reason, the waterproof effect is provided with respect to the 1st opening edge part 14a from which much water tends to flow down.
- the notch 12 has an arc shape. For this reason, the waterproof effect is equal in all portions of the notch 12, and the waterproof property of the electrical junction box 10 is effectively improved.
- FIG. 7 is an exploded perspective view of the electrical junction box 110 according to the second embodiment.
- FIG. 8 shows a perspective view of the electrical junction box 110 after the mating connector 170 is fitted.
- the electrical junction box 110 includes a circuit board 160 and a case 140. Since the arrangement and functions of the electrical junction box 110 are the same as those of the first embodiment, a description thereof will be omitted.
- the direction of arrow A in FIGS. 7 and 8 is the upper side, and the opposite direction is the lower side.
- the arrow B direction of FIG. 7, 8 is made into the left, and the direction on the opposite side is made into the right.
- let the arrow C direction side of FIG. 7, 8 be a front side, and let the other side be a back side.
- the configuration of the circuit board 160 is the same as that of the first embodiment, the description thereof is omitted.
- the front side surface of the circuit board 60 is referred to as a front surface 160a
- the back side surface is referred to as a back surface 160b.
- a plurality of rectangular projecting portions 164 projecting to the back side are provided on the back surface 160b of the circuit board 160.
- a pair of screw holes 162 and 162 are provided on the lower right side and the upper left side of the circuit board 160.
- the case 140 is composed of an outer case 130 and an inner case 150, and has a cylindrical shape whose cylinder axis extends in the vertical direction, and the entire circuit board 160 is accommodated therein.
- the circuit board 160 is accommodated in the outer case 130 together with the inner case 150 in a state where the projecting portion 164 is attached to the inner case 150 by being fitted to the inner case 150.
- the inner case 150 is made of a synthetic resin and includes a plurality of fitting openings 154, a connector housing 108, and a terminal group 156. Three fitting openings 154 are arranged side by side in the vicinity of the center of the inner case 150 in the vertical direction, and are provided so as to penetrate the front and back of the inner case 150.
- the connector housing 108 can be fitted with a mating connector 170 (an example of a “mating member”), and the inner case is exposed with a mating surface (not shown) with the mating connector 170 exposed downward. 150 is provided at the lower end.
- the terminal group 156 is provided at the upper end of the inner case 150 with its terminal shaft protruding upward.
- a boss (not shown) is provided on the front side of the inner case 150 so as to face the screw hole 162 of the circuit board 160 when the circuit board 160 is fitted to the inner case 150.
- the circuit board 160 is attached to the front side of the inner cover 150 by fitting the protrusion 164 into the fitting opening 154 and screwing the boss to the boss through the screw hole 162 of the circuit board 160. It is done.
- the outer case 130 is made of synthetic resin, and is provided on the upper end surface covering the upper end of the outer case 130, the two first side walls 114 provided on the front side and the back side of the outer case 130, and the left and right sides of the outer case 130.
- Two second side walls 128 and a terminal hole group 118 provided on the upper end surface are provided.
- the two first side walls 114 and the two second side walls 128 form an opening 125 that opens below the outer case 130.
- the opening 125 is surrounded by the first opening edge portion 114a at the lower end of the first side wall 114 and the second opening edge portion 128a at the lower end of the second side walls 124 and 128, and the inner case can be inserted through the opening 125. It has become.
- the terminal hole group 118 penetrates the upper end surface of the outer case 130 in the vertical direction.
- the inner cover 150 is accommodated in the outer case 130 by inserting the inner case 150 fitted with the circuit board 160 through the opening 125 below the outer case 130.
- the inner case 150 is fixed to each other.
- the connector housing of the inner case 150 is disposed in the opening 125 of the outer case 130, and the terminal group 156 of the inner case 150 is disposed in the terminal hole group 118 of the outer case 130.
- FIG. 9 shows a front view of the electrical junction box 110 after the mating connector 170 is fitted, as viewed from the front side.
- FIG. 10 shows a bottom view of the electrical connection box 110 after the mating connector 170 is fitted, as viewed from below.
- the first opening edge 114a of the outer case 130 is provided with a gentle arc-shaped notch 112 extending from one end to the other end.
- the mating connector 170 is provided with an opposite surface 170 a on the opposite side to the surface fitted to the connector housing 170.
- the opposite surface 170 a is located on the same plane as the opening 125 of the outer case 130 in a state where the mating connector 170 is fitted to the connector housing 108.
- the plate surfaces 160a and 160b of the circuit board 160 fitted to the inner case 150 are in the direction of gravity (FIG. 7, 7 is arranged between the power source and the in-vehicle electrical component with the upper side in FIG. 7 as the upper side.
- FIG. 7, 7 is arranged between the power source and the in-vehicle electrical component with the upper side in FIG. 7 as the upper side.
- the configuration in which the arc-shaped notch is provided in the opening edge of the side wall of the case can be applied to various electrical junction boxes.
- the technology disclosed in the present specification includes a case, a circuit board accommodated in the case, and a connector housing disposed in an opening surrounded by an opening edge of a side wall of the case, and the connector housing Relates to an electrical junction box in which a mating member can be fitted from the opening, and an arcuate cutout is provided at the opening edge.
- the opening edge is provided with an arc-shaped notch, so that the water that has flowed through the side wall of the case to the notch in the opening edge is perpendicular to the notch. There is no contact. For this reason, the water which reached the notch is guided by the notch and flows down without flowing into the opening. Thereby, the penetration
- a gap may be provided between an enclosing wall that is a part of the side wall of the case and surrounds the connector housing, and an outer surface of the connector housing. According to this configuration, even when water flows into the opening from the opening edge portion, water enters the gap, so that it is possible to effectively prevent or suppress water from entering the connector housing.
- a fitting surface of the connector housing with the mating member may be provided inside the opening. According to this configuration, the distance between the fitting surface of the connector housing with the mating member and the opening edge can be long. Thereby, even when water circulates into the opening from the opening edge, the water can hardly reach the fitting surface between the connectors, and the waterproofness of the electrical junction box is improved. be able to.
- the counterpart member has an opposite surface provided on a side opposite to a surface fitted to the connector housing, and the opposite surface of the counterpart member fitted to the connector housing is the same as the opening. It may be located on a plane. According to this configuration, when the mating member is fitted to the connector housing, for example, a jig or the like is applied parallel to the opening, and by confirming the contact state between the jig and the opposite surface of the mating member, The degree of fitting between the connector housing and the mating member can be detected. For this reason, the mating member can be securely fitted to the connector housing, and water can be effectively prevented or suppressed from entering the connector housing.
- the notch may be provided from one end to the other end of the opening edge. According to this configuration, it is possible to prevent or suppress water from entering into the opening over the entire opening edge, and further improve the waterproofness of the electrical junction box.
- the circuit board is accommodated in the case so that a plate surface thereof follows a direction of gravity, and the opening edge is a first opening parallel to the plate surface of the circuit board accommodated in the case.
- the width of the first opening edge is generally larger than the width of the second opening edge, so that the first is larger than the second opening edge. A lot of water tends to flow down toward the opening edge. According to said structure, a waterproof effect can be provided with respect to the 1st opening edge part from which much water tends to flow down.
- the case may have a flat shape that covers the front and back of the circuit board accommodated in the case, and the connector housing may be a part of the case. According to this configuration, the waterproofness can be improved in the electrical junction box constituted by the case formed in a flat shape.
- the first opening edge may be provided above a center position in a vertical direction of the circuit board accommodated in the case. According to this configuration, the water adhering to the side wall of the case located below the center position in the vertical direction of the circuit board is located below the first opening edge, and therefore reaches the first opening edge. There is nothing. For this reason, it can suppress that the water adhering to the side wall of a case reaches
- the case has a rectangular cylindrical shape covering the front and back of the circuit board accommodated in the case, and the connector housing is separate from the case and can be accommodated from the opening. Good. According to this configuration, the waterproofness can be improved in the electrical junction box configured by the case formed in a cylindrical shape and the connector housing accommodated in the case.
- the notch may be arcuate. According to this configuration, the curvature is equal in all parts of the notch, so that the waterproof effect can be equalized in all parts of the notch, and the waterproofness of the electrical junction box can be effectively improved. it can.
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Abstract
Description
4、20...座部
6、16、18...フード部側壁
6a、16a、18a、18b...(フード部の)開口
8、108...コネクタハウジング
8a...嵌合面
8b...(コネクタハウジングの)外面
10、110...電気接続箱
12、112...切り欠き
14、114...第1側壁
14a、114a...第1開口縁部
22、52...周壁
24、28、128...第2側壁
24a、28a、128a...第2開口縁部
25、125...開口
26...下方側壁
30...第1カバー
40、140...ケース
50...第2カバー
58、158...ビス
60、160...回路基板
60a、160a...(回路基板の)表面
60b、160b...(回路基板の)裏面
62、162...ビス孔
70、170...相手側コネクタ
70a、170a...反対面
86a、86b、86c...隙間
118...端子孔群
130...外側ケース
150...内側ケース
154...嵌合開口部
156...端子群
164...突出部
図面を参照して実施形態1を説明する。図1は、実施形態1に係る電気接続箱10の分解斜視図を示している。また、図2は、相手側コネクタ70が嵌合された後の電気接続箱10の斜視図を示している。図1に示すように、電気接続箱10は、回路基板60と、ケース40とを備えている。この電気接続箱10は、図示しない電源と、ランプ、ホーン等の車載電装品(図示しない)との間に配されて、車載電装品の通電、及び断電を実行する。なお、以下の説明では、図1、2の矢印A方向を表側とし、その反対側の方向を裏側とする。また、図1、2の矢印B方向を左方とし、その反対側の方向を右方とする。また、図1、2の矢印C方向側を下方とし、その反対側を上方とする。
図面を参照して実施形態2を説明する。図7は、実施形態2に係る電気接続箱110の分解斜視図を示している。図8は、相手側コネクタ170が嵌合された後の電気接続箱110の斜視図を示している。図7に示すように、電気接続箱110は、回路基板160と、ケース140とを備えている。この電気接続箱110の配置、機能については、実施形態1のものと同様であるため省略する。なお、以下の説明では、図7、8の矢印A方向を上方とし、その反対側の方向を下方とする。また、図7、8の矢印B方向を左方とし、その反対側の方向を右方とする。また、図7、8の矢印C方向側を表側とし、その反対側を裏側とする。
(1)上記の各実施形態では、第1開口縁部にのみ切り欠きが設けられている構成を採用したが、切り欠きが第1開口縁部と第2開口縁部の両者に設けられている構成を採用してもよい。または、切り欠きが第2開口縁部にのみ設けられている構成を採用してもよい。
この構成によると、開口縁部から開口内に水が回り込んだ場合であっても、この隙間に水が入り込むため、コネクタハウジングへの水の浸入を効果的に防止ないし抑制することができる。
この構成によると、コネクタハウジングの相手側部材との嵌合面と、開口縁部との距離を長く設けることができる。これにより、開口縁部から開口内に水が回り込んだ場合であっても、その水がコネクタ同士の嵌合面に到達し難いものとすることができ、電気接続箱の防水性を向上させることができる。
この構成によると、コネクタハウジングに相手側部材を嵌合させた場合に、例えば開口に対して平行に冶具等を当て、この冶具と相手側部材の反対面との当接具合を確かめることにより、コネクタハウジングと相手側部材との嵌合度合いを検知することができる。このため、コネクタハウジングに対して相手側部材を確実に嵌合させることができ、コネクタハウジングへの水の浸入を効果的に防止ないし抑制することができる。
この構成によると、開口縁部の全てに亘って水の開口内への回り込みを防止ないし抑制することができ、電気接続箱の防水性を一層向上させることができる。
上記の場合、回路基板は板状であることから、通常、第2開口縁部の幅に比して第1開口縁部の幅が広くなるため、第2開口縁部に比して第1開口縁部の方へ多くの水が流れ落ちて来やすい。上記の構成によると、多くの水が流れ落ちて来やすい第1開口縁部に対して防水効果を付与することができる。
この構成によると、扁平状に形成されたケースによって構成される電気接続箱において、防水性を向上させることができる。
この構成によると、回路基板の鉛直方向の中心位置より下方に位置するケースの側壁に付着した水は、第1開口縁部より下方に位置することとなるため、第1開口縁部に到達することがない。このため、ケースの側壁に付着した水が第1開口縁部へ到達することを抑制することができ、電気接続箱の防水性を向上させることができる。
この構成によると、筒状に形成されたケースとそのケースに収容されたコネクタハウジングとによって構成される電気接続箱において、防水性を向上させることができる。
この構成によると、切り欠きの全ての部分においてその曲率が等しくなるため、切り欠きの全ての部分においてその防水効果を等しくすることができ、電気接続箱の防水性を効果的に向上させることができる。
Claims (10)
- ケースと、
該ケース内に収容される回路基板と、
前記ケースの側壁の開口縁部によって囲まれる開口内に配されるコネクタハウジングと、を備え、
前記コネクタハウジングは前記開口から相手側部材を嵌合可能であり、
前記開口縁部に弧状の切り欠きが設けられている電気接続箱。 - 前記ケースの側壁の一部であって前記コネクタハウジングを囲む囲壁と前記コネクタハウジングの外面との間に隙間が設けられている請求の範囲第1項に記載の電気接続箱。
- 前記コネクタハウジングの前記相手側部材との嵌合面が前記開口より内側に設けられている請求の範囲第2項に記載の電気接続箱。
- 前記相手側部材は、前記コネクタハウジングに嵌合される面とは反対側に設けられた反対面を有し、
前記コネクタハウジングに嵌合された前記相手側部材の前記反対面が前記開口と同一平面上に位置する請求の範囲第1項から請求の範囲第3項のいずれか1項に記載の電気接続箱。 - 前記切り欠きが前記開口縁部の一端から他端に亘って設けられている請求の範囲第1項から請求の範囲第4項のいずれか1項に記載の電気接続箱。
- 前記回路基板は、その板面が重力の方向に沿うように前記ケース内に収容され、
前記開口縁部は、前記ケース内に収容された前記回路基板の板面に対して平行な第1開口縁部と、前記ケース内に収容された前記回路基板の板面に対して垂直な第2開口縁部と、を有し、
前記切り欠きは、前記ケースの側壁の前記第1開口縁部に設けられている請求の範囲第1項から請求の範囲第5項のいずれか1項に記載の電気接続箱。 - 前記ケースは、該ケース内に収容された前記回路基板の表裏を覆う扁平状を成しており、
前記コネクタハウジングは前記ケースの一部である請求の範囲第6項に記載の電気接続箱。 - 前記第1開口縁部は、前記ケース内に収容された前記回路基板の鉛直方向の中心位置より上方に設けられている請求の範囲第7項に記載の電気接続箱。
- 前記ケースは、該ケース内に収容された前記回路基板の表裏を覆う角形の筒状を成しており、
前記コネクタハウジングは前記ケースと別体であると共に前記開口から収容可能となっている請求の範囲第6項に記載の電気接続箱。 - 前記切り欠きが円弧状である請求の範囲第1項から請求の範囲第9項のいずれか1項に記載の電気接続箱。
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JP2009290941A (ja) * | 2008-05-27 | 2009-12-10 | Autonetworks Technologies Ltd | 電気接続箱 |
JP2009291043A (ja) * | 2008-05-30 | 2009-12-10 | Sumitomo Wiring Syst Ltd | 電気接続箱 |
JP2010045918A (ja) * | 2008-08-12 | 2010-02-25 | Sumitomo Wiring Syst Ltd | 電気接続箱 |
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JPS6169332U (ja) * | 1984-10-13 | 1986-05-12 | ||
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JP2009290941A (ja) * | 2008-05-27 | 2009-12-10 | Autonetworks Technologies Ltd | 電気接続箱 |
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