JP7092585B2 - Board connector - Google Patents

Description

The present invention relates to a board connector having a plurality of terminals.

As a board connector mounted on a circuit board, for example, there is one disclosed in Patent Document 1. As shown in FIGS. 19 to 22, the board connector 1 is formed in pairs on a box-shaped housing 2 having an open rear side and a front surface 2b of a support wall portion 2a of the housing 2, and is a connector on the other side (not shown). The hood portion 3 to which the housing is fitted and the support wall portion 2a of the housing 2 are pierced and attached, the connection terminal portion 4a is arranged in the hood portion 3, and the mounting terminal portion 4b is mounted on the circuit board 5. A plurality of terminals 4 and a case 6 for accommodating the housing 2 and the circuit board 5 are provided.

Then, in the upper center between the pair of hood portions 3 and 3 of the support wall portion 2a of the housing 2, a ventilation hole 8 for avoiding a pressure difference between the inside and outside of the housing 2 and the ventilation hole 8 are provided. It is provided with a waterproof breathable membrane 9 for closing.

Japanese Unexamined Patent Publication No. 2014-164825

However, in the conventional substrate connector 1, when water infiltrates, the water collects and closes the ventilation hole 8, which may adversely affect the air permeability. Further, depending on the angle at which the water is scattered, there is a possibility that the water may enter and accumulate in the ventilation hole 8. Further, since the ventilation portion 7 composed of the ventilation hole 8 and the waterproof ventilation membrane 9 is set in a deep place between the frontages of the pair of hood portions 3 and 3, it is difficult to seal at the time of ventilation inspection, and the ventilation inspection cure. Jigs and inspection work can be complicated.

Therefore, the present invention has been made to solve the above-mentioned problems, and it is difficult for water to enter the ventilation holes, and even if it does enter, it can be drained and the air permeability can always be ensured. The purpose is to provide a connector for.

INDUSTRIAL APPLICABILITY The present invention is attached to and connected to a box-shaped housing, a hood portion formed on the outer surface of the partition wall portion of the housing and into which the housing of the mating connector is fitted, and a partition wall portion of the housing. A board connector comprising a plurality of terminals in which a terminal portion is arranged in the hood portion and a mounting terminal portion is mounted on a circuit board, and a housing for accommodating the housing and the circuit board. A drain hole penetrating from the upper surface to the lower surface of the partition wall portion of the housing is provided, and a vent hole penetrating to the drain hole is provided on the inner surface side of the partition wall portion of the housing, and the vent hole side of the drain hole is provided. Around the opening edge of the ventilation hole on the inner surface of the housing, a protrusion having an inclined surface on the upper and lower surfaces and protruding from the inner surface is formed .

According to the present invention, water is provided by providing a drainage hole penetrating from the upper surface to the lower surface of the partition wall portion of the housing and providing a ventilation hole penetrating to the drainage hole on the inner surface side of the partition wall portion of the housing. It is difficult for the housing to enter the ventilation holes no matter what angle it scatters, and even if it does, it can be drained, ensuring ventilation at all times.

It is an exploded perspective view of the connector for a substrate of 1st Embodiment of this invention. It is a perspective view of the said board connector. It is a top view of the connector for a board. It is a bottom view of the above-mentioned board connector. It is a front view of the said board connector. FIG. 5 is a cross-sectional view taken along the line XX in FIG. It is a partial cross-sectional view at the time of inspection of the ventilation part of the said board connector. (A) to (e) are explanatory views showing the relationship between each direction of the ventilation portion of the substrate connector and the infiltration of water. It is an exploded perspective view of the connector for a substrate of 2nd Embodiment of this invention. It is a perspective view of the connector for a substrate of the 2nd Embodiment. It is a top view of the connector for a substrate of the 2nd Embodiment. It is a bottom view of the connector for a substrate of the 2nd Embodiment. It is a front view of the connector for a substrate of the 2nd Embodiment. 13 is a cross-sectional view taken along the line XX in FIG. It is a partial cross-sectional view at the time of inspection of the ventilation part of the connector for a substrate of the 2nd Embodiment. (A) to (e) are explanatory views showing the relationship between each direction of the ventilation portion of the substrate connector of the second embodiment and the infiltration of water. It is a front view of the said ventilation part. It is a perspective view of the said ventilation part. It is a front view of the conventional board connector. It is a partial notch plan view of the said conventional board connector. It is a rear view of the said conventional board connector. It is sectional drawing of the said conventional board connector.

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

1 is an exploded perspective view of the board connector according to the first embodiment of the present invention, FIG. 2 is a perspective view of the board connector, FIG. 3 is a plan view of the board connector, and FIG. 4 is a bottom view of the board connector. 5 is a front view of the board connector, FIG. 6 is a cross-sectional view taken along line XX in FIG. 5, FIG. 7 is a partial cross-sectional view of the ventilation portion of the board connector at the time of inspection, and FIGS. e) is an explanatory view showing the relationship between each direction of the ventilation portion of the board connector and the infiltration of water in a cross section.

As shown in FIGS. 1 to 6, the board connector 10 is a board-mounted connector for an electronic control unit in which electronic components of an electronic control device (ECU) are housed in a rigid housing, and is made of synthetic resin. A square tubular shape formed on the front surface (outer surface) 12a of a substantially square box-shaped housing 11 having an open side and a front wall portion (partition wall portion) 12 of the housing 11 and to which a housing of a connector on the other side (not shown) is fitted. The hood portion 13 and the front wall portion 12 of the housing 11 are attached through the middle portion 15b, the connection terminal portion 15a is arranged in the hood portion 13, and the mounting terminal portion 15c is mounted on the circuit board 14. A plurality of terminals 15 and a metal housing 16 for accommodating the housing 11 and the circuit board 14 are provided.

Further, as shown in FIGS. 1 and 6, a drain hole (through hole) 17 penetrating from the upper surface 12b to the lower surface 12c of the front wall portion 12 of the housing 11 is provided. Further, a ventilation hole 18 penetrating to the drain hole 17 is provided on the rear surface (inner surface) 12d side of the front wall portion 12 of the housing 11. The ventilation hole 18 is closed by the filter 19.

The front wall portion 12 of the housing 11 is a partition wall of the hood portion 13, and one side of the hood portion 13 projects like a rectangular plate. Further, on both sides of the front wall portion 12, projecting plate portions 12e having a substantially trapezoidal shape and being thinner than the front wall portion 12 are integrally projected. Further, a plurality of mounting holes 12f are formed in the hood portion 13 of the front wall portion 12 at predetermined intervals in the vertical and horizontal directions, and the intermediate portion 15b of each terminal 15 is press-fitted into each of the mounting holes 12f for mounting. Has been done. Further, each terminal 15 is bent into an L shape, and the lower end side of the mounting terminal portion 15c is inserted into a through hole 14a of a circuit board 14 on which an electronic control circuit of an engine or the like is mounted, and a conductor pattern and solder (not shown) are inserted. It is attached. The mounting terminal portions 15c of the plurality of terminals 15 are inserted into the plurality of positioning holes 21 formed in the lining plate 20 made of synthetic resin, and are positioned and aligned at predetermined intervals.

As shown in FIGS. 2 to 4 and 6, the periphery of the housing 11 is covered with a metal housing 16 composed of an upper lid 16a and a lower lid 16b, and a circuit board is formed in a sealed space inside the housing 11. It houses 14.

As shown in FIGS. 1 to 4, 6 and 7, the drain hole 17 is formed in a rectangular hole shape from the upper surface 12b to the lower surface 12c so as to be perpendicular to the upper surface 12b and the lower surface 12c. There is. Around the opening edge of the ventilation hole 18 on the inner surface 17a on the inner surface 17a of the drain hole 17, a protrusion 17b having inclined surfaces 17c and 17d on the upper and lower sides and projecting from the inner surface 17a is formed.

As shown in FIGS. 6 and 7, the ventilation hole 18 is a hole communicating with the drain hole 17 for avoiding a pressure difference between the inside and the outside of the housing 16 accommodating the housing 11, and drains water. It is formed perpendicular to the hole 17. Further, an annular recess 12g is formed around the opening edge of the ventilation hole 18 on the rear surface 12d of the front wall portion 12 of the housing 11 in which the ventilation hole 18 is formed. A filter 19 having both water repellency and breathing is welded to the annular recessed portion 12g so as to close the ventilation hole 18.

As shown in FIG. 7, when inspecting the air permeability of the filter 19, the air injection plate 31 of the ventilation inspection jig 30 is attached to the flat upper surface 12b of the front wall portion 12, and the flat lower surface 12c is attached. The air sealing plate 32 of the ventilation inspection jig 30 is attached to the air sealing plate 32. Further, a heating element (electronic component) or the like of an ECU (not shown) is mounted on the circuit board 14. Further, the ventilation portion is composed of the drain hole 17, the ventilation hole 18, and the filter 19.

According to the board connector 10 of the first embodiment, when the housing 16 is installed horizontally, as shown in FIGS. 8 (a) to 8 (e), the ventilation holes are formed through the drain holes 17 of the ventilation portion. Since it becomes difficult for water W to enter the ventilation path of 18, and it is difficult for water to collect (drainage) even if it enters, it is possible to secure ventilation over time. Furthermore, durability and reliability can be improved by ensuring breathability.

Further, as shown in FIG. 7, the air injection surface to which the air injection plate 31 of the ventilation inspection jig 30 hits is set to the flat upper surface 12b of the front wall portion 12 of the housing 11, and the air sealing plate of the ventilation inspection jig 30 is set. By making the sealing surface to which the 32 hits the flat lower surface 12c of the front wall portion 12 of the housing 11, the air sealing plate 32 of the ventilation inspection jig 30 seals the drain hole 17 and injects / inspects the air A. The work becomes easy and the ventilation inspection can be simplified.

Further, as shown in FIG. 6, protrusions 17b having inclined surfaces 17c and 17d up and down around the opening edge of the ventilation hole 18 on the inner surface 17a on the ventilation hole 18 side of the drain hole 17 and protruding from the inner surface 17a. Due to the formation, it is difficult for water W to enter the ventilation hole 18 from the drain hole 17.

9 is an exploded perspective view of the board connector according to the second embodiment of the present invention, FIG. 10 is a perspective view of the board connector, FIG. 11 is a plan view of the board connector, and FIG. 12 is a bottom view of the board connector. 13 is a front view of the board connector, FIG. 14 is a cross-sectional view taken along line XX in FIG. 13, FIG. 15 is a partial cross-sectional view at the time of inspecting the ventilation portion of the board connector, and FIGS. e) is an explanatory view showing the relationship between each direction of the ventilation portion of the substrate connector and the infiltration of water, FIG. 17 is a front view of the ventilation portion, and FIG. 18 is a perspective view of the ventilation portion.

As shown in FIGS. 17 and 18, the substrate connector 10'is the upper surface of the front wall portion 12 of the housing 11 so as to sandwich the ventilation hole 18 on the inner surface 17a side through which the ventilation hole 18 of the drain hole 17 penetrates. It is different from that of the first embodiment in that a pair of concave groove portions 17e are formed from 12b to the lower surface 12c. Since the other configurations are the same as those in the first embodiment, the same components are designated by the same reference numerals and detailed description thereof will be omitted.

According to the board connector 10'of these two embodiments, no matter what direction the housing 16 is mounted, as shown in FIGS. 16A to 16E, the drain holes of the ventilation portion are drained. Since it becomes difficult for water W to enter the ventilation path from 17 to the ventilation hole 18 and it is difficult for water to collect (drainage) even if it enters, it is possible to secure ventilation over time. Furthermore, durability and reliability can be improved by ensuring breathability.

Further, as shown in FIG. 15, the air injection surface to which the air injection plate 31 of the ventilation inspection jig 30 hits is set to the flat upper surface 12b of the front wall portion 12 of the housing 11, and the air sealing plate of the ventilation inspection jig 30 is set. By making the sealing surface to which the 32 hits the flat lower surface 12c of the front wall portion 12 of the housing 11, the air sealing plate 32 of the ventilation inspection jig 30 seals the drain hole 17 and injects / inspects the air A. The work becomes easy and the ventilation inspection can be simplified.

Further, as shown in FIGS. 9, 17, and 18, the housing is formed by forming the openings on the upper surface 12b side and the lower surface 12c side of the front wall portion 12 of the housing 11 of the drain hole 17 of the ventilation portion into a U-shape. Even if water W enters the drain hole 17 from the upper surface 12b side or the lower surface 12c side of the front wall portion 12 of 11, the ventilation hole 18 is provided on the inner surface 17a side through which the ventilation hole 18 of the drain hole 17 penetrates. Since the water W flows into the concave groove portions 17e provided so as to sandwich the pair, the amount of water transmitted to the ventilation holes 18 can be reduced (suppressed).

Further, as shown in FIG. 18, protrusions 17b having inclined surfaces 17c and 17d up and down around the opening edge of the ventilation hole 18 on the inner surface 17a on the ventilation hole 18 side of the drain hole 17 and projecting from the inner surface 17a. Due to the formation, it is difficult for water W to enter the ventilation hole 18 from the drain hole 17.

10,10'Board connector 11 Housing 12 Front wall (partition wall)
12a Front (outer surface)
12b upper surface 12c lower surface 12d rear surface (inner surface)
13 Hood part 14 Circuit board 15 Terminal 15a Connection terminal part 15c Mounting terminal part 16 Housing 17 Drain hole (through hole)
17a inner surface
17b protrusion
17c, 17d inclined surface
17e Concave groove 18 Vent

Claims (2)

With a box-shaped housing,
A hood portion formed on the outer surface of the partition wall portion of the housing and into which the housing of the mating connector is fitted,
A plurality of terminals that are attached through the partition wall portion of the housing, the connection terminal portion is arranged in the hood portion, and the mounting terminal portion is mounted on the circuit board.
A housing for accommodating the housing and the circuit board,
It is a connector for the board equipped with
A drain hole that penetrates from the upper surface to the lower surface of the partition wall portion of the housing is provided.
In addition, a ventilation hole that penetrates to the drain hole is provided on the inner surface side of the partition wall portion of the housing .
A connector for a substrate, characterized in that a protrusion having an inclined surface up and down and protruding from the inner surface is formed around the opening edge of the ventilation hole on the inner surface of the ventilation hole side of the drain hole . The board connector according to claim 1.
A connector for a substrate, characterized in that a pair of concave grooves are formed from the upper surface to the lower surface of the partition wall portion so as to sandwich the ventilation hole on the inner surface side through which the ventilation hole penetrates.

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