JP2024019780A - board connector - Google Patents

Abstract

An object of the present invention is to provide a board connector that can ensure proper assembly. A connector 10 according to the present embodiment includes a housing 20 disposed on a substrate 1, and a plurality of terminals 30 each having a second connection portion 32 held by the housing 20 and connected to the substrate 1, respectively. , a peg 40 that is press-fitted into a press-fitting part 26 formed in the housing 20 to fix the housing 20 to the board 1, and the housing 20 has pegs 40 on both sides in the width direction Y of the peg 40 that is press-fitted into the press-fitting part 26. It has a protective wall 27 that extends and protects the second connection part 32, and a board grounding protrusion 28 that projects from the protective wall 27 toward the board 1. [Selection diagram] Figure 4

Description

The present invention relates to a board connector.

In general, board connectors are known that include a housing placed on a circuit board, terminals held in the housing, and pegs (fixing metal fittings) attached to the housing to fix the housing to the circuit board. (For example, see Patent Document 1). In this type of board connector, a plate-shaped peg is press-fitted into a press-fit part formed on the side wall of a synthetic resin housing, and the tip of the press-fitted peg is soldered to the circuit board. This realizes the fixation of board connectors.

JP2020-72058A

By the way, a mating connector is attached to this type of board connector and electrically connected thereto. In this case, due to the routing of the wiring materials (cables, harnesses, etc.) of the mating connector to be installed, a force (moment) is applied to the board connector in the direction of tilting the housing with respect to the circuit board, and the solder is applied to the circuit board. It is assumed that stress will be concentrated on the attached pegs. For this reason, there is room for further improvement in terms of ease of assembly when fixing the housing and the circuit board.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a board connector that can suppress stress concentration on the fixing fittings and ensure proper assemblability.

In order to achieve the above object, a board connector according to the present invention includes a housing disposed on a board, a plurality of terminals each having a board connection end held by the housing and connected to the board, and a housing. a plate-shaped fixing fitting that is press-fitted into a press-fitting part formed in the board to fix the housing to the board; It is characterized by having a protective wall that protects the end portion, and a board grounding protrusion that projects from the protective wall toward the board.

The board connector according to the present invention has a housing extending on both sides in the width direction of a fixing fitting that is press-fitted into a press-fitting part, a protective wall that protects a board connecting end of a terminal, and a protective wall that extends from the protective wall toward the board. and a protruding board grounding protrusion. Therefore, for example, when a force acts on the board in a direction to tilt the housing, the board grounding protrusion comes into contact with the board, thereby suppressing stress concentration on the fixing fitting. As a result, the board connector has the effect that proper assembly can be ensured.

FIG. 1 is a perspective view showing a schematic configuration of a connector according to this embodiment. FIG. 2 is an exploded perspective view of the connector of FIG. 1. FIG. 3 is an exploded perspective view of the housing and terminals viewed from the board side. FIG. 4 is a side view of the connector of FIG. 1.

Embodiments according to the present invention will be described in detail below based on the drawings. Note that the present invention is not limited to this embodiment. Components in the following embodiments include those that can be easily replaced by those skilled in the art, or those that are substantially the same. In the following explanation, among the first direction, second direction, and third direction that intersect with each other, the first direction is referred to as the "frontage width direction X," the second direction is referred to as the "depth direction Y," and the third direction is referred to as the "frontage width direction X." The three directions are called "height direction Z." Here, the frontage width direction X, the depth direction Y, and the height direction Z are orthogonal to each other. The height direction Z typically corresponds to the direction in which the peg is press-fitted into the press-fitted portion, which will be described later, and the direction in which the board grounding projection protrudes. Further, the depth direction Y typically corresponds to the width direction of a peg that is press-fitted into a press-fitting part, which will be described later, and the protruding direction of a protective wall. Unless otherwise specified, each direction used in the following description will be described as a direction in a state where each part is assembled to each other.

FIG. 1 is a perspective view showing a schematic configuration of a connector according to this embodiment. FIG. 2 is an exploded perspective view of the connector of FIG. 1. FIG. 3 is an exploded perspective view of the housing and terminals viewed from the board side. FIG. 4 is a side view of the connector of FIG. 1.

A connector (board connector) 10 shown in FIG. 1 is, for example, a board-mounted connector mounted on a board 1 of an electronic device mounted on a vehicle such as an automobile. The board 1 is, for example, a printed circuit board (PCB). The substrate 1 is formed into a substantially rectangular plate shape such that the height direction Z is the thickness direction, and the frontage width direction X and the depth direction Y are the extending directions of each side. The board 1 is formed by printing a wiring pattern (print pattern) using a conductive material such as copper on an insulating layer made of an insulating material such as epoxy resin, glass epoxy resin, paper epoxy resin, or ceramic. A circuit body is composed of patterns. Further, as shown in FIG. 2, the surface 1A of the substrate 1 is provided with a pair of pads 2 for fixing the connector 10 and a plurality of conductive parts 3 to which the connector 10 is electrically connected. There is. Furthermore, a positioning hole 4 is formed in the board 1, passing through the board 1 along the height direction Z, and for positioning the connector 10.

The connector 10 is electrically connected to the board 1 and constitutes a connection mechanism that electrically connects a mating connector (not shown) and the board 1. The connector 10 includes a housing 20, a plurality of terminals 30, and pegs (fixing metal fittings) 40.

The housing 20 constitutes a casing of the connector 10. The housing 20 is formed using an insulating synthetic resin material or the like. The housing 20 has a hood 21 formed into a substantially rectangular cylindrical shape whose axial direction extends along the height direction Z. The hood 21 is open at one end in the height direction Z, and a mounting portion 22 into which a mating connector (not shown) is inserted and mounted is formed at the open end.

As shown in FIG. 3, the housing 20 includes a terminal holding portion 23 on the other end side in the height direction Z. A plurality of holes 24 are formed in the terminal holding part 23 in areas corresponding to the inside of the hood 21, which penetrate the terminal holding part 23 in the height direction Z. In this embodiment, a plurality of holes 24 are provided side by side along the frontage width direction X, and two rows of these horizontal holes 24 are provided at intervals in the depth direction Y.

The terminals 30 electrically connect the board 1 and the mating connector, respectively. As shown in FIG. 3, the plurality of terminals 30 are arranged side by side along the frontage width direction X, and two rows of these side-by-side terminals 30 are provided at intervals in the depth direction Y. The plurality of terminals 30 are then press-fitted into the corresponding holes 24 from the side opposite to the mounting portion 22 of the hood 21 (the side of the substrate 1 (FIG. 2)), thereby fitting into the holes 24 (terminal holding portions 23). Retained.

The terminals 30 each have a first connection part 31, a second connection part (substrate connection end) 32, and a bent part 33, and are integrally formed of a conductive metal such as copper. The terminal 30 is bent into an L-shape at the bending portion 33 to have a bent shape. In this embodiment, the first connecting portion 31 extends along the height direction Z, and the second connecting portion 32 extends along the depth direction Y. Further, the two rows of terminals 30 adjacent to each other in the depth direction Y are arranged back to back, and extend in opposite directions along the depth direction Y so that the second connection portions 32 of the terminals 30 in each row are spaced apart from each other. Exists.

The first connecting portion 31 is one end portion of the terminal 30. The first connecting portion 31 is exposed inside the hood 21 through the hole 24 and is electrically connected to a terminal (not shown) of a mating connector attached to the mounting portion 22 (hood 21). The second connecting portion 32 is the other end of the terminal 30. The second connecting portion 32 extends substantially parallel to the surface 1A of the substrate 1, and is connected to the conductive portion 3 provided on the substrate 1 by soldering. Thereby, the terminals 30 are electrically connected to the substrate 1, respectively. The bent portion 33 is provided between the first connecting portion 31 and the second connecting portion 32, and is arranged so that the extending direction of the first connecting portion 31 and the extending direction of the second connecting portion 32 are perpendicular to each other. Bend it into an L shape.

Further, as shown in FIG. 1, the housing 20 has side walls 25 located on both sides in the frontage width direction X, and press-fit portions 26 into which pegs 40 are press-fit are integrally formed on the outer surfaces of these side walls 25. ing. This press-fitting part 26 corresponds to a press-fitting groove with open upper and lower ends, and as shown by arrow Z1 in FIG. A peg 40 is press-fitted. That is, the upper end side of the press-fitting part 26 is on the upstream side in the press-fitting direction Z1, and the lower end side of the press-fitting part 26 is on the downstream side in the press-fitting direction Z1.

As shown in FIG. 2, the peg 40 includes a main body 41 made of a flat metal plate, a fixing part 42 formed at the lower end of the main body 41, and a fixing part 42 in the width direction (in the present embodiment, in the depth direction Y) of the main body 41. holding portions 43 formed at both ends of the (equivalent to). Here, the lower end of the peg 40 is on the tip side when press-fitting into the press-fitting part 26, that is, on the downstream side in the press-fitting direction Z1. Since the peg 40 is press-fitted into the press-fitting part 26 from the fixing part 42 on the lower end side, the fixing part 42 is provided on the downstream side of the peg 40 (main body 41) in the press-fitting direction Z1, and the holding part 43 is provided in the press-fitting direction Z1. It is installed on the upstream side of the The fixing portion 42 is formed by folding the lower end of the main body 41 toward the upper end so that the cross-sectional shape is approximately U-shaped. This fixing portion 42 is fixed to the pad 2 (FIG. 1) of the substrate 1 by soldering.

The holding portion 43 is provided on the side surface of the main body 41 on the opposite side (upper end side) from the fixing portion 42 . The upper end side of the main body 41 is formed wider in the width direction than the fixing part 42, and protrudes further than the fixing part 42 on both sides in the width direction. This width direction is a direction perpendicular to the press-fitting direction Z1 and corresponds to the depth direction Y. The holding portions 43 are formed on both end surfaces of the widest portion of the peg 40 in the width direction, and are press-fitted and held by scraping (deforming) the opposing inner walls of the press-fitting portion 26 .

Further, as shown in FIGS. 1 and 4, the housing 20 is connected to side walls 25 located on both sides of the frontage width direction It has protective walls 27 extending on both sides. This protective wall 27 protects the second connection portion 32 of the terminal 30 held by the housing 20. Specifically, as shown in FIG. 4, the protective wall 27 is provided so as to protrude from the tip 32A of the second connecting portion 32 in the width direction Y of the peg 40 described above. Therefore, even if the connector 10 is dropped, for example, the protection wall 27 receives the impact of the fall, thereby preventing the terminals 30 (second connection portions 32) from bending.

Further, as shown in FIGS. 2 and 3, the housing 20 includes a substrate grounding protrusion 28 on the surface 27A of the protective wall 27 facing the substrate 1, which projects from the opposing surface 27A toward the substrate 1. In this embodiment, the board grounding protrusions 28 are provided at the four corners of the housing 20. As shown in FIG. 4, this board grounding protrusion 28 is spaced apart from the board 1 when the housing 20 is not tilted with respect to the board 1, and is spaced apart from the board 1 when the housing 20 is tilted with respect to the board 1. Ground to 1.

The connector 10 of the present embodiment has a hood 21 whose axial direction extends along the height direction Z (thickness direction of the board 1), and a mating connector 50 is attached to the attachment portion 22 of the hood 21 for electrical connection. connected to. In this case, depending on the routing of the wiring material 51 of the mating connector 50 to be attached, a force (moment) acts on the connector 10 in the direction of tilting the housing 20 with respect to the board 1 (direction A in FIG. 4). It is assumed that stress is concentrated on the peg 40 soldered to the board 1.

In this embodiment, the housing 20 is provided with a board grounding protrusion 28 on the surface 27A of each protective wall 27 facing the board 1, which projects from the facing surface 27A toward the board 1. When the substrate 20 is tilted, one substrate grounding protrusion 28 is grounded to the substrate 1. Thereby, further inclination of the housing 20 with respect to the board 1 can be suppressed, and stress concentration on the pegs 40 soldered to the board 1 can be suppressed.

Further, in this embodiment, the housing 20 is integrally formed with the hood 21, the press-fitting part 26, the protective wall 27, and the board grounding protrusion 28, and the housing 20 is connected to the press-fitting part 26 as shown in FIG. It is formed symmetrically with respect to the center line L of the peg 40 extending in the press-fitting direction Z1. That is, since the protective wall 27 and the board grounding protrusions 28 are provided at positions approximately equidistant from the center line L, even if the housing 20 is tilted in any direction with respect to the board 1, each board grounding protrusion 28 is equally grounded to the substrate 1. Thereby, the inclination of the housing 20 with respect to the board 1 can be equally suppressed, and stress concentration on the pegs 40 soldered to the board 1 can be suppressed.

The board grounding protrusion 28 is preferably located far away from the center line L. In this embodiment, the board grounding protrusion 28 is located at both ends of the peg 40 in the width direction Y on the opposing surface 27A of the protective wall 27. It is provided. Specifically, the distance W1 from the center line L to the protective wall 27 and the board grounding protrusion 28 is set to twice the distance W2 from the center line L to the holding part 43 of the peg 40. In this way, by providing the board grounding protrusion 28 at a position far away from the center line L of the peg 40, when the housing 20 is tilted with respect to the board 1, one of the board grounding protrusions 28 immediately connects to the board 1. Since the peg 40 is grounded to the substrate 1, stress concentration on the peg 40 soldered to the board 1 can be minimized.

On the other hand, if the board grounding protrusion 28 is provided at a position far away from the center line L of the peg 40, the protrusion length of the protective wall 27 in the width direction (depth direction Y) increases accordingly. If the protruding length of the protective wall 27 in the width direction is large, the protective wall 27 itself becomes susceptible to moment force in a direction perpendicular to the width direction (frontage width direction X) due to vibration or the like. Therefore, in this embodiment, the housing 20 includes ribs 29 that connect the pair of protection walls 27 facing each other with the second connection portions 32 of the plurality of terminals 30 interposed therebetween. According to this configuration, the rigidity of the housing 20 can be increased by connecting the opposing protection walls 27 with each other by the ribs 29, and the influence of moment force in the frontage width direction X can be suppressed.

Further, as shown in FIGS. 2 and 3, the housing 20 is provided with a positioning protrusion 200 that protrudes along the height direction Z on a surface 27A of the protection wall 27 that faces the substrate 1. This positioning protrusion 200 is inserted into a positioning hole 4 provided in the substrate 1 and can position the housing 20 with respect to the substrate 1.

As described above, the connector 10 according to the present embodiment includes a housing 20 arranged on the board 1 and a plurality of second connecting parts 32 held by the housing 20 and connected to the board 1, respectively. It includes a terminal 30 and a plate-shaped peg 40 that is press-fitted into a press-fitting part 26 formed in the housing 20 to fix the housing 20 to the substrate 1. The housing 20 includes a protective wall 27 that extends on both sides in the width direction (depth direction Y) of the peg press-fitted into the press-fitted part 26 and protects the second connection part, and a protective wall 27 that protrudes toward the board 1 from the protective wall 27. A substrate grounding protrusion 28 is provided. Therefore, for example, if a force (moment) is applied to the connector 10 due to the routing of the wiring material 51 of the mating connector 50 to be attached, and the housing 20 is tilted with respect to the board 1, one of the board ground protrusions 28 Ground to the board 1. Thereby, further tilting of the housing 20 with respect to the substrate 1 can be suppressed. As a result, stress concentration on the pegs 40 soldered to the board 1 can be suppressed, and proper assemblability of the connector 10 can be ensured.

Further, according to the present embodiment, the board grounding protrusion 28 is spaced apart from the board 1 when the housing 20 is not tilted with respect to the board 1, and is spaced apart from the board 1 when the housing 20 is tilted with respect to the board 1. Since the housing 20 is grounded to the ground, the inclination of the housing 20 with respect to the board 1 can be suppressed with a simple structure, and stress concentration on the peg 40 soldered to the board 1 can be suppressed.

Further, according to the present embodiment, the housing 20 includes the ribs 29 that connect the pair of protection walls 27 facing each other with the plurality of second connection parts 32 interposed therebetween. Therefore, the rigidity of the housing 20 can be increased, and the moment force in the frontage width direction X that affects the protection wall 27 can be suppressed.

Further, according to the present embodiment, the protective wall 27 projects further in the width direction Y than the tip 32A of the second connecting portion 32 of the terminal 30. Therefore, even if the connector 10 is dropped, for example, the protection wall 27 receives the impact of the fall, thereby preventing the terminals 30 (second connection portions 32) from bending.

Further, according to the present embodiment, the protective wall 27 and the board grounding protrusion 28 are each formed symmetrically with respect to the center line L of the peg 40 extending in the press-fitting direction Z1 into the press-fitting part 26. Therefore, by providing the protective wall 27 and the board grounding protrusion 28 at positions approximately equidistant from the center line L, even if the housing 20 is tilted in any direction with respect to the board 1, each board grounding protrusion 28 is equally grounded to the substrate 1. Thereby, the inclination of the housing 20 with respect to the board 1 can be equally suppressed, and stress concentration on the pegs 40 soldered to the board 1 can be suppressed.

Note that the connector according to the present invention is not limited to the embodiments described above, and various changes can be made within the scope of the claims. In the present embodiment, the hood 21 has a configuration in which the axial direction extends along the height direction Z, but it may extend along the depth direction Y, for example.

Further, in the present embodiment, the protective wall 27 and the board grounding protrusion 28 are formed symmetrically with respect to the center line L of the peg 40 extending in the press-fitting direction Z1 into the press-fitting part 26, but the protective wall 27 The protruding length of the substrate grounding projection 28 and the protruding length of the board grounding protrusion 28 may be changed as appropriate.

1 Board 10 Connector 20 Housing 21 Hood 25 Side wall 26 Press-fitting part 27 Protective wall 27A Opposing surface 28 Board grounding protrusion 29 Rib 30 Terminal 31 First connection part 32 Second connection part (board connection end)
32A Tip 40 Peg (Fixing bracket)
50 Mating connector 51 Routing material L Center line Y Width direction, depth direction Z Height direction Z1 Press-fit direction

Claims (5)

a housing placed on the board;
a plurality of terminals each having a board connecting end held by the housing and respectively connected to the board;
a plate-shaped fixing fitting that is press-fitted into a press-fitting part formed in the housing to fix the housing to the substrate;
The housing includes a protective wall extending on both sides in the width direction of the fixing fitting press-fitted into the press-fitting part and protecting the board connection end.
A board connector characterized in that it has a board grounding protrusion that projects from the protective wall toward the board. The substrate grounding protrusion is separated from the substrate when the housing is not tilted with respect to the substrate, and is grounded to the substrate when the housing is tilted with respect to the substrate. The board connector according to item 1. 3. The board connector according to claim 1, wherein the housing includes a rib that connects the pair of protection walls facing each other with the plurality of board connection ends interposed therebetween. 3. The board connector according to claim 1, wherein the protective wall projects further in the width direction than a tip of the board connection end. The board connector according to claim 1 or 2, wherein the protective wall and the board grounding protrusion are formed symmetrically with respect to a center line of the fixing fitting extending in a direction of press-fitting into the press-fitting part. .

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