JP2020087601A - Board mounted connector - Google Patents

Abstract

To provide a board mounted connector requiring no process to cover a tine part of a terminal after soldering inspection of the tine part.SOLUTION: A board mounted connector 10 includes a housing 30, a terminal having a tine part 41, and a shield member 60. The shield member 60 is located at an advanced position moved in a direction of an arrow F in a non-mated state with a mating connector 70, the tine part being exposed at the advanced position, and is located at a retracted position shown in Figure 11 and moved in a direction of an arrow R in a mated state with a mating connector 70, the tine part being covered at the retracted position.SELECTED DRAWING: Figure 11

Description

The present invention relates to a board-mounted connector including terminals having a tine portion surface-mounted on a circuit board.

As a countermeasure against electromagnetic interference, a connector whose terminals are covered with a shield is widely used. Here, in the case of a board-mounted connector, it is necessary to expose the tine portion of the terminal in order to inspect whether it is properly soldered to the circuit board. If the tine portion is left exposed, noise may be radiated from the tine portion during actual use, causing electromagnetic interference. Therefore, it is preferable to cover the tine portion with a shield during actual use.

Here, Patent Document 1 discloses a connector including a conductive shell that moves to a position where the tine portion is exposed and a position where the tine portion is covered.

JP, 2016-197549, A

In the case of the above-mentioned shielded connector of Patent Document 1, after the soldering inspection of the tine portion, a step of moving the conductive shell to a position covering the tine portion is required.

In view of the above circumstances, it is an object of the present invention to provide a board-mounted connector that does not require a step of covering the tines after the soldering inspection of the tines.

The board-mounted connector of the present invention that achieves the above object,
A terminal having a tine portion surface-mounted on the circuit board,
A housing that holds the terminals,
Along the mating direction with the mating connector, when it is not mating with the mating connector, it is located at the forward position where the tine part is exposed when viewed from the direction perpendicular to the circuit board, and is mated with the mating connector. And a shield member that is located at a retracted position that covers the tine portion.

The board-mounted connector of the present invention is provided with a shield member which is located at the forward position to expose the tine portion when in the non-fitted state and which is located at the retracted position when the fitted state covers the tine portion. . That is, according to the board-mounted connector of the present invention, the shield member moves to the retracted position that covers the tine portion when the mating connector is fitted. Therefore, the step of covering the tines after the soldering inspection of the tines is unnecessary.

Here, in the board-mounted connector of the present invention, the shield member includes a pressed portion that is pressed by the mating connector during mating with the mating connector, and an engaging portion that engages with the mating connector. It is preferable that the mating connector is pushed to move to the retracted position, and the engaging portion is pulled when the mating connector is removed to move to the forward position.

By using such a shield member including the pressed portion and the engaging portion, the movement between the forward movement position and the backward movement position is realized by fitting and withdrawing the mating connector.

Further, in the board-mounted connector of the present invention, it is preferable that the shield member is in a grounded state when it is located at least in the retracted position of the forward movement position and the backward movement position.

The shield member is a member that shields the tine portion, and needs to be grounded when it is located at the retracted position. The shield member may be grounded or may not be grounded when it is located at the forward position. Further, the grounding portion with which the shield member is in contact may be the grounding portion in the board-mounted connector or the grounding portion on the circuit board.

Here, in the board-mounted connector of the present invention, the shield member includes a main body portion that covers the tine portion, a contact portion that is provided in a lower portion of the main body portion on the side of the circuit board and that contacts a ground plane of the circuit board, and a main body portion. It is also a preferable configuration to have a configuration in which a pressing portion that is provided on the upper portion of the circuit board and that engages with the housing and presses the contact portion toward the ground surface of the circuit board is provided.

In the case of the shield member having this configuration, the pressing portion pressed by the housing presses the contact portion toward the ground plane of the circuit board. As a result, the shield member is reliably and stably held at the ground potential.

Further, in the board-mounted connector of the present invention, it is preferable that the housing has a mounting portion that mounts the shield member and separates it from the circuit board when the shield member moves to the forward position where the tine portion is exposed.

If the shield member is separated from the circuit board when the shield member moves to the forward position, inadvertent contact between the shield member and the tine portion (terminal) can be avoided.

According to the above-described board-mounted connector of the present invention, it is possible to realize a board-mounted connector that does not require the step of covering the tines after the soldering inspection of the tines.

It is the perspective view which showed the board|substrate mounting type connector and mating connector of one Embodiment of this invention. FIG. 3 is a perspective view showing a circuit board on which the board mounting type connector shown in FIG. 1 is mounted. FIG. 3 is a perspective view showing a mating connector that fits into the board-mounted connector shown in FIG. 1. It is the same mating connector as FIG. 3, and is a perspective view which showed the shape seen from a different viewpoint from FIG. FIG. 3 is a perspective view showing a shape of the main body of the board-mounted connector of the present embodiment as seen obliquely from the front in a direction in which a fitting opening into which a mating connector is fitted appears. FIG. 6 is a perspective view showing a shape of the main body portion shown in FIG. 5 when viewed obliquely from the rear. It is a perspective view of a shield member. FIG. 2 is a rear view showing the board-mounted connector in the direction of arrow F shown in FIG. 1. It is sectional drawing which follows the arrow XX shown in FIG. 1 of a board mounted connector. It is sectional drawing which follows the arrow XX shown in FIG. 1 of a board mounting type connector and a mating connector. It is sectional drawing which follows the arrow YY shown in FIG. 1 of a board mounting type connector and a mating connector. FIG. 12 is a cross-sectional view of the board-mounted connector and the mating connector taken along arrows ZZ shown in FIG. 11.

Hereinafter, embodiments of the present invention will be described.

FIG. 1 is a perspective view showing a board-mounted connector and a mating connector according to an embodiment of the present invention. In FIG. 1, the board-mounted connector 10 is mounted on the circuit board 90. The mating connector 70 is in a state of being fitted to the board-mounted connector 10. The circuit board 90 is shown only in a region near the board-mounted connector 10.

The board-mounted connector 10 includes a main body 20 and a shield member 60. The main body 20 includes a housing 30, terminals fixed to the housing 30, and pegs 50 that fix the housing 30 to the circuit board 90 by soldering. The terminals are built in the housing 30 except for the tines 41 shown in FIG. Then, the shield member 60 shields the tine portion 41 of the terminal.

Here, the mating connector 70 holds the ends of the two optical cables 80. Then, the surface mount connector 10 converts the optical signal transmitted by the optical cable 80 into an electric signal and transmits the electric signal to the circuit board 90. The surface-mounted connector 10 also converts an electric signal transmitted on the circuit board 90 into an optical signal and transmits the optical signal to the optical cable 80.

FIG. 2 is a perspective view showing a circuit board on which the board mounting type connector shown in FIG. 1 is mounted.

On the circuit board 90, four signal lines 91 and three types of ground patterns 92, 93, 94 are shown. As shown by the eight tine portions 41 in FIG. 6, the board-mounted connector 10 is provided with eight terminals. Then, the four signal lines 91 are soldered to the tine portions 41 of the four terminals of the eight terminals. Further, of the three types of ground patterns 92, 93, 94 on the circuit board 10, four ground patterns 92 are formed and soldered to the tine portions 41 of the remaining four terminals. Further, the three ground patterns 93 keep the shield member 60 at the ground potential by the pressure contact of the shield member 60. Further, the pegs 50 are soldered to the two ground patterns 94. The two ground patterns 94 firmly fix the housing 30 to the circuit board 90.

FIG. 3 is a perspective view showing a mating connector that fits into the board-mounted connector shown in FIG.

4 is a perspective view showing the same mating connector as in FIG. 3 and showing a shape viewed from a different viewpoint from FIG.

As shown in FIG. 4, two optical cables 80 are inserted into the mating connector 70 through openings 71 on the back surface. Further, as shown in FIG. 3, an opening 72 communicating with an opening 71 on the rear surface is also formed on the front surface of the mating connector 70. The light guide tube portion 31 (see FIG. 5) of the board-mounted connector 10 is inserted into the opening 72 on the front surface when the board-mounted connector 10 is fitted. The light guide tube portion 31 guides the optical signal emitted from the optical cable 80 and transmits the optical signal to the photoelectric conversion portion 34 (see FIG. 9) in the back. Further, these light guide tube portions 31 transmit to the optical cable 80 an optical signal obtained by converting the electric signal transmitted by the signal line 91 on the circuit board 90 by the photoelectric conversion portion 34.

Furthermore, engaging recesses 73 are formed on the front end sides of the left and right side surfaces of the mating connector 70. The left and right holding engaging portions 66 (see FIG. 7) of the shield member 60 are fitted into the left and right engaging recesses 73 to hold the mating connector 70 from the left and right. Details of the engagement recess 73 and the sandwiching engagement portion 66 will be described later.

Further, two guide grooves 74 are formed on the upper surface of the mating connector 70. Guide ribs 32 (see FIG. 5) provided in the housing 30 of the board-mounted connector 10 are inserted into the guide grooves 74 when the board-mounted connector 10 is fitted to guide the fitting. ..

A lock arm 75 is provided on the mating connector 70. The lock arm 75 has a cantilever shape extending rearward with the front end side being a fixed end. A lock projection 751 protruding upward is formed at an intermediate position of the lock projection 751, and a release operation portion 752 is provided at a rear end portion which is a free end. The lock projection 751 is locked to the locking projection 35 of the board-mounted connector 10 when the board-mounted connector 10 and the mating connector 70 are fitted to each other.

Further, the mating connector 70 has a main housing 76 and a rear housing 77 having a lateral width wider than that of the main housing 76.

FIG. 5 is a perspective view showing a shape of the main body of the board-mounted connector of the present embodiment as seen obliquely from the front in the direction in which the fitting opening into which the mating connector is fitted appears.

FIG. 6 is a perspective view showing the shape of the main body portion shown in FIG.

The board-mounted connector 10 shown in FIG. 1 includes a body portion 20 shown in FIGS. 5 and 6 and a shield member 60 shown in FIG. 7 described later. Here, first, the main body portion 20 will be described with reference to FIGS. 5 and 6.

As described above, the main body portion 20 includes the housing 30, the terminals, and the shield portion 50. As for the terminals, only the tine portion 41 soldered to the circuit board 90 is exposed from the housing 30. The board-mounted connector 10 also includes a photoelectric conversion unit 34 (see FIG. 9) that performs conversion between an optical signal and an electric signal. The terminal extends from the photoelectric conversion unit 34 and electrically connects the photoelectric conversion unit 34 and the circuit board 90.

The housing 30 is provided with guide ribs 32 which enter the guide grooves 74 of the mating connector 70 and guide the fitting of the mating connector 70. In addition, the light guide cylinder portion 31 projects into the fitting opening 30</b>A of the housing 30. As described above, the light guide tube portion 31 is inserted into the opening 72 on the front surface of the mating connector 70 and exchanges an optical signal with the optical cable 80. The optical signal received from the optical cable 80 is transmitted to the photoelectric conversion unit 34 (see FIG. 9) and converted into an electric signal. Then, the converted electric signal is transmitted to the signal line 91 of the circuit board 90 via the tine portion 41 of the terminal. Further, the electric signal transmitted via the signal line 91 of the circuit board 90 is converted into an optical signal by the photoelectric conversion section 34, and is transmitted to the optical cable 80 via the light guide tube section 31.

Further, as shown in FIG. 6, the tine portions 41 of the eight terminals are exposed on the back surface side of the main body portion 20 and extend in the direction along the surface of the circuit board 90. Further, on both sides of these eight tine portions 41, shield support protrusions 33 protruding in a direction along the surface of the circuit board 90 are provided. The shield support protrusion 33 will be described later.

FIG. 7 is a perspective view of the shield member.

As shown in FIG. 1, the shield member 60 is a member that is attached to the rear end face side of the main body portion 20 and covers the tine portion 41 of the terminal to shield it.

The shield member 60 is formed of a metal plate and has a main body portion 61, a lower spring portion 62, and an upper spring portion 63. The main body portion 61 has an upper wall 611, a rear wall 612, and both side walls 613, and covers the tine portion 41. Further, the lower spring portion 62 is provided on the circuit board 90 side of the main body portion 61. The lower spring portion 62 contacts the ground pattern 93 of the circuit board 90. The upper spring portion 63 is provided on the upper portion of the main body portion 61, which is separated from the circuit board 90. The upper spring portion 63 engages with the housing 30 of the main body portion 20 and presses the lower spring portion 62 toward the ground pattern 93 on the circuit board 90. Both the lower spring portion 62 and the upper spring portion 63 have spring properties. Therefore, in the lower spring portion 62 and the upper spring portion 63, the upper spring portion 63 is engaged with the housing 30 of the main body portion 20 and the lower spring portion 62 is pressed toward the ground pattern 93 on the circuit board 90. Then, it is elastically bent. As a result, the tolerances of the housing 30 and the shield member 60 are absorbed, and the shield member 60 is in stable contact with the ground pattern 93 and held at the ground potential. Note that only one of the lower spring portion 62 and the upper spring portion 63 may have a spring property, and the other may not have a spring property. The lower spring portion 62 and the upper spring portion 63 correspond to examples of the contact portion and the pressing portion, respectively, according to the present invention.

Further, the shield member 60 has a pair of pressed arms 64 extending forward from the side wall 613 of the main body 61 on both left and right sides thereof. Further, the shield member 60 has a pair of holding arms 65 that extend forward from the side walls 613 of the main body 61 on both left and right sides thereof. A holding engagement portion 66 that fits into the engagement recess 73 of the mating connector 70 is provided at the tip of the holding arm 65. The pressed arm 64 corresponds to an example of the pressed portion according to the present invention. Further, the sandwiching engagement portion 66 corresponds to an example of the engagement portion according to the present invention.

8 is a rear view showing the board-mounted connector in the direction of arrow F shown in FIG.

9 is a cross-sectional view of the board-mounted connector taken along the arrow XX shown in FIG. Although the mating connector 70 is also shown in FIG. 1, this FIG. 9 is a sectional view of only the board-mounted connector 10.

Further, FIG. 10 is a cross-sectional view of the board-mounted connector and the mating connector taken along the arrow XX shown in FIG.

The shield member 60 is movable between the forward position shown in FIG. 9 that moves in the direction of arrow F and the retracted position shown in FIG. 10 that moves in the direction of arrow R. The shield member 60 shown in FIG. 1 is in the retracted position as in FIG. Further, the shield member 60 shown in FIG. 8 is in the forward movement position as in FIG.

Before fitting the mating connector 70, the shield member 60 is located at the forward position shown in FIGS. 8 and 9. The upper spring portion 63 is released from the pressure applied by the housing 30. The shield member 60 rests on the shield support protrusion 33, and the lower spring portion 62 is in a state of floating above the ground pattern 93 on the circuit board 90. This avoids the risk of the shield member 60 accidentally contacting the tine portion 41. The shield support protrusion 33 corresponds to an example of the mounting portion according to the present invention. When the shield member 60 is at the forward position, the tine portion 41 is exposed when viewed from above. Therefore, the soldering state of the tine portion 41 can be inspected when the shield member 60 is at the forward position.

When the mating connector 70 is fitted to the board-mounted connector 10, the pressed arm 64 of the shield member 60 is pushed by the mating connector 70 (see also FIG. 12), and is shown in the direction of arrow R in FIG. Move to the retracted position.

When the shield member 60 moves to the retracted position shown in FIG. 10, the shield member 60 is disengaged from the shield support protrusion 33, and the upper spring portion 63 is pushed downward by the housing 30. The lower spring portion 62 is pressed against the ground pattern 93 on the circuit board 90 by pressing the upper spring portion 63 against the housing 30. As a result, the shield member 60 becomes the ground potential. At this time, the upper spring portion 63 and the lower spring portion 62 are elastically deformed. When the shield member 60 moves to the retracted position, the tine portion 41 is in a state of being covered by the main body portion 61 of the shield member 60. As a result, the tine portion 41 is shielded.

11 is a cross-sectional view of the board-mounted connector and the mating connector, taken along the arrow YY shown in FIG.

12 is a cross-sectional view of the board-mounted connector and the mating connector, taken along the arrow ZZ shown in FIG. However, in FIG. 12, the mating connector 70 is schematically illustrated for easy understanding.

11, the mating connector 70 is fitted to the board-mounted connector 20, and the shield member 60 is in the retracted position moved in the direction of arrow R, as in FIG. As shown in FIG. 11, when the mating connector 70 is fitted, the nipping engaging portions 66 of the tips of the pair of nipping arms 65 extending forward of the shield member 60 are fitted in the engaging recesses 73 of the mating connector 70. To be crowded. As a result, the shield member 60 is in a state of sandwiching the mating connector 70 with the pair of sandwiching arms 65. Thereafter, the mating connector 70 is moved in the direction of arrow F in an attempt to remove the mating connector 70 from the board-mounted connector 10. Then, as shown in FIG. 12, the shield member 60 holding the mating connector 70 also moves in the direction of arrow F together with the mating connector 70. The shield member 60 can move only to a predetermined forward position. Therefore, after that, only the mating connector 70 is pulled out in the direction of the arrow F while leaving the shield member 60 at its advanced position.

Thus, according to the present embodiment, the shield member 60 moves to the retracted position and the advanced position, respectively, as the mating connector 70 is fitted and removed. As described above, according to this embodiment, the board-mounted connector 10 that realizes both the soldering inspection of the tine portion 41 and the shield of the tine portion 41 is realized.

In the above-described embodiment, the shield member 60 is configured to be held at the ground potential by contacting the ground pattern 93 on the circuit board 90. However, the shield member 60 may be configured to be held at the ground potential by contacting the peg 50 of the main body 20 instead of contacting the ground pattern on the circuit board 90.

10 Board Mounted Connector 20 Body Part of Board Mounted Connector 30 Housing 30A Fitting Opening 31 Light Guide Tube 32 Guide Rib 33 Shield Support Protrusion 34 Photoelectric Converter 41 Terminal Tine 60 Shield Member 61 Shield Member Body 62 Lower spring part 63 Upper spring part 64 Pressed arm 65 Clamping arm 66 Clamping engagement part 70 Mating connector 71 Rear opening 72 Front opening 73 Engagement recess 74 Guide groove 75 Lock arm 751 Lock protrusion 752 Release operation part 76 Main Housing 77 Rear housing 771 Rear housing front surface 80 Optical cable 90 Circuit board 91 Signal line

Claims (5)

A terminal having a tine portion surface-mounted on the circuit board,
A housing for holding the terminal,
Along the mating direction with the mating connector, when in the non-mating state with the mating connector, the mating connector is located at the forward position where the tine portion is exposed when viewed from the direction perpendicular to the circuit board. A board-mounted connector, comprising: a shield member positioned at a retracted position to cover the tine portion when in the mated state. The shield member includes a pressed portion that is pushed by the mating connector when mated with the mating connector, and an engaging portion that engages with the mating connector, and the pushed portion is pushed by the mating connector and 2. The board-mounted connector according to claim 1, wherein the connector is moved to a retracted position, and the engaging portion is pulled when the mating connector is removed and moved to the advanced position. The board-mounted connector according to claim 1 or 2, wherein the shield member is in a grounded state when it is located at least in the retracted position of the forward movement position and the backward movement position. The shield member includes a main body portion that covers the tine portion, a contact portion that is provided on a lower portion of the main body portion on the side of the circuit board and that contacts a ground plane of the circuit board, and a portion of the main body portion that is separated from the circuit board. The board mounted connector according to claim 3, further comprising a pressing portion which is provided on an upper portion and which engages with the housing and presses the contact portion toward the ground surface. The board-mounted connector according to claim 4, wherein the housing has a mounting portion that mounts the shield member and separates the shield member from the circuit board when the shield member moves to the forward position.

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