Board-mounted connector and board with connector

Abstract

To provide a substrate mounted type connector capable of compatibly improving EMC performance of the connector and improving reliability of electric connection between the connector and a circuit board, and a substrate with the connector that uses the connector.SOLUTION: A movable part 22 of a shield case 20 held by a housing of a connector 1 is configured to move from an open position where a gap a through which a contact portion P between a terminal 10 and a conductor pattern on a circuit board 2 can be viewed from outside the connector 1 is defined between the circuit board 2 and the movable part 22 to a closed position where the contact portion P is covered in a state in which the gap a is narrower than when the movable part 22 is at the open position. The shield case 20 has a projection part 26a coming into contact with a ground terminal 10B at the closed position.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present invention relates to a board-mounted connector and a board with a connector. [Background technology]

[0002] Conventionally, board-mounted connectors that are mounted on circuit boards have been proposed. For example, one conventional board-mounted connector includes terminals soldered to conductor patterns on a circuit board, a housing having a mating recess for receiving a mating connector, and a metal shield case attached to the housing so as to cover the outer wall surface of the housing (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-009561 Summary of the Invention [Problem to be solved by the invention]

[0004] The above-mentioned shielding case is generally provided in a connector for the purpose of suppressing the intrusion of electromagnetic waves, which cause electrical noise and the like, from the inside of the connector into the connector from the outside, and from the emission from the inside to the outside. Such noise reduction performance is also referred to as the EMC performance of the connector. The shielding case of the above-mentioned conventional connector is arranged so as to mainly surround the mating recess of the housing. However, this shielding case does not cover the contact points between the terminals and the conductor patterns (so-called SMT (Surface Mount Technology) parts), and the contact points are exposed to the outside of the connector. From the viewpoint of improving the EMC (Electro-Magnetic Compatibility) performance of the connector, it is desirable that these contact points also be covered by the shielding case.

[0005] However, in reality, if the contact points between the terminals and the conductor patterns are inadvertently covered with a shielding case, it becomes difficult to visually check the soldering condition (e.g., the shape of the so-called fillet) at the contact points from the outside of the connector. From the viewpoint of increasing the reliability of the electrical connection at the contact points, it is desirable that the contact points be exposed to the outside of the connector so that, for example, an operator can visually check the soldering condition.

[0006] Thus, there is room for further improvement in conventional board-mounted connectors in terms of achieving both improved EMC performance of the connector and improved reliability of the electrical connection between the connector and the circuit board.

[0007] One object of the present invention is to provide a board-mounted connector that can improve the EMC performance of the connector and the reliability of the electrical connection between the connector and the circuit board, and a connector-equipped board that uses the connector. [Means for solving the problem]

[0008] In order to achieve the above-mentioned object, the board-mounted connector according to the present invention has the following features. A board-mounted connector comprising: terminals to be connected to a circuit board; a noise-reducing shield case arranged to cover the terminals; and a housing that integrally holds the terminals and the shield case, the terminals include a ground terminal to which a ground is supplied and a power terminal to which power is supplied; At least a portion of the shield case is the connector is configured to be displaceable from an open position in which a gap is defined between the circuit board and at least one portion, allowing a contact point between the terminal and the conductor pattern on the circuit board to be visible from outside the connector, to a closed position in which the contact point is covered with the gap narrower than when the at least one portion is in the open position, the shield case said at least part of has a first contact portion that contacts the ground terminal in the closed position, It is a board-mounted connector.

[0009] In order to achieve the above-mentioned object, the connector-equipped board according to the present invention has the following features. The board-mounted connector; a circuit board on which the connector is mounted; a housing that houses the connector and the circuit board, The shield case has a second contact portion that contacts the housing. The board must have a connector. [Effects of the Invention]

[0010] According to the present invention, it is possible to provide a board-mounted connector that can achieve both improved EMC performance of the connector and improved reliability of the electrical connection between the connector and the circuit board, and a connector-equipped board that uses the connector.

[0011] The present invention has been briefly described above. The details of the present invention will become clearer by reading the following detailed description of the invention (hereinafter referred to as "embodiments") with reference to the accompanying drawings. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 1 is a perspective view of a board-mounted connector according to an embodiment of the present invention, showing a state in which a movable part of a shield case is in an open position. [Figure 2] FIG. 2 is a perspective view of the board-mounted connector according to the embodiment of the present invention, showing a state in which the movable part of the shield case is in the closed position. [Figure 3] FIG. 3 is an exploded perspective view of the connector shown in FIG. [Figure 4] FIG. 4 is a cross-sectional view taken along line AA in FIG. [Figure 5] FIG. 5 is a perspective view showing a state in which the circuit board on which the connector shown in FIG. 1 is mounted is accommodated in a housing. [Figure 6]FIG. 6 is a cross-sectional view taken along line BB in FIG. 5, showing the state where the movable part is in the open position. [Figure 7] Figure 7 is a cross-sectional view corresponding to Figure 6, showing a connector-equipped board according to an embodiment of the present invention in which the board on which the connector is mounted has been completely accommodated in the housing, and shows the movable part in the closed position. [Figure 8] FIG. 8 is a schematic front view of a connector according to another embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0013] <Embodiment> Hereinafter, with reference to the drawings, a board-mounted connector 1 (hereinafter simply referred to as "connector 1") and a connector-equipped board 5 according to an embodiment of the present invention will be described. The connector 1 (see FIG. 1) is mounted on a circuit board 2 and housed in a housing 4 for use as the connector-equipped board 5 (see FIG. 5).

[0014] For ease of explanation, the following definitions are used for the "front-rear direction," "width direction," "up-down direction," "front," "rear," "upper," and "lower" as shown in Figure 1. The "front-rear direction," "width direction," and "up-down direction" are perpendicular to each other. The front-rear direction coincides with the mating direction of the connector 1 and the mating connector (not shown).

[0015] 1 and 2, the connector 1 includes a plurality of terminals 10 (ten in this example) electrically connected to a circuit board 2, a noise-reducing shield case 20 arranged to cover the plurality of terminals 10, and a housing 30 that integrally holds the plurality of terminals 10 and the shield case 20. Each of the components that make up the connector 1 will be described below in order.

[0016] First, the terminal 10 will be described. As shown in Fig. 3, the terminal 10 has a power terminal 10A to which power is supplied, a ground terminal 10B to which ground is supplied, and a signal terminal 10C to which a signal is supplied. In this embodiment, six power terminals 10A are arranged side by side in the width direction, two ground terminals 10B are arranged side by side in the width direction, and two signal terminals 10C are arranged side by side in the width direction.

[0017] In this embodiment, a ground terminal 10B is disposed between the power terminal 10A and the signal terminal 10C. Each terminal 10 integrally includes a connection portion 11 extending in the front-to-rear direction, a hanging portion 12 bending from the rear end of the connection portion 11 and extending downward, and a contact portion 13 bending from the lower end of the hanging portion 12 and extending rearward. Terminals 10 are formed by subjecting a single metal rod to predetermined pressing, bending, and other processes.

[0018] The connecting portion 11 has its base (rear portion) inserted into and fixed in the terminal accommodating hole 33 (see FIG. 3) of the housing 30, and its tip (front portion) connected to a mating terminal accommodated in a mating connector. The contact portion 13 connects to a conductor pattern (not shown) formed on the upper surface of the circuit board 2.

[0019] Next, we will explain the shield case 20. The shield case 20 is arranged to cover the multiple terminals 10, thereby protecting the multiple terminals 10 from external electromagnetic noise and suppressing the leakage of electromagnetic noise generated from the power supply terminals 10A to the outside. The shield case 20 is formed by subjecting a single metal plate to predetermined pressing, bending, and other processes.

[0020] 3, the shield case 20 has a main body 21 held by the housing 30, and a movable part 22 extending in a cantilevered manner from the main body 21. The main body 21 has a pair of substantially rectangular, flat side plate parts 23 arranged facing each other at a predetermined distance in the width direction, and a rectangular, flat connecting part 24 that connects upper ends of the front regions of the pair of side plate parts 23 in the width direction. The pair of side plate parts 23 are fixed to the housing 30 by being inserted into a pair of slits 35 (described below) in the housing 30.

[0021] A plurality of pegs 27 are provided on the lower end surface of each side plate portion 23, protruding downward from a plurality of positions (three positions in this example) in the front-to-rear direction. When the connector 1 is mounted on the circuit board 2, the pegs 27 are fixed to the circuit board 2, thereby fulfilling the function of fixing the shielding case 20 (i.e., the connector 1) to the circuit board 2. Furthermore, for example, by connecting the pegs 27 to an earth circuit (not shown) formed on the circuit board 2, it is possible to release the current caused by the electromagnetic waves shielded by the shielding case 20 to the earth circuit.

[0022] 1 and 3 to the closed position shown in Fig. 2, the movable part 22 extends rearward integrally in a cantilever shape from the rear end part extending in the width direction of the connecting part 24. Specifically, the movable part 22 includes a first part 25 in the shape of a rectangular flat plate extending rearward and upward at an angle from the rear end part of the connecting part 24, and a second part 26 in the shape of a substantially rectangular flat plate bending from the first part 25 and extending rearward and downward at an angle.

[0023] When the movable part 22 receives a downward external force, the root part of the first part 25 (the boundary part with the connecting part 24) elastically deforms, causing the movable part 22 to displace from the open position to the closed position, and when the external force is released, the root part of the first part 25 elastically returns to its original position, causing the movable part 22 to immediately return to the open position.

[0024] The first portion 25 has a shape corresponding to the opening located between the upper ends of the rear regions of the pair of side plate portions 23, and the second portion 26 has a shape corresponding to the opening located between the rear ends of the pair of side plate portions 23. Specifically, when the movable portion 22 is in the closed position, as shown in FIG. 2 , the first portion 25 closes the opening located between the upper ends of the rear regions of the pair of side plate portions 23, and the second portion 26 closes the opening located between the rear ends of the pair of side plate portions 23.

[0025] Although it is desirable for the first portion 25 and the second portion 26 to be in complete contact with the pair of side plate portions 23, slight gaps may exist between the first portion 25 and the pair of side plate portions 23, and between the second portion 26 and the pair of side plate portions 23, due to manufacturing tolerances of the shielding case 20, etc. Such slight gaps are permissible as long as they do not substantially affect the EMC performance of the shielding case 20. A pair of protrusions 25a are formed on the top surface of the first portion 25 as second contact portions. A protrusion 26a is formed on the front surface of the second portion 26 as a first contact portion.

[0026] The pair of protrusions 25a are formed by pressing the first portion 25 from the lower surface toward the upper surface, and are provided so as to protrude upward when the movable portion 22 is in the closed position (see FIG. 7). In this embodiment, the pair of protrusions 25a are provided side by side in the width direction. The protrusion 26a is formed by pressing the second portion 26 from the rear surface toward the front surface, and is provided so as to protrude forward when the movable portion 22 is in the closed position (see FIG. 7).

[0027] Next, we will explain the housing 30. The housing 30 functions to integrally hold the multiple terminals 10 and the shield case 20. The housing 30, which is a resin molded product, integrally includes a terminal accommodating portion 31 and a hood portion 32 disposed adjacent to the front side of the terminal accommodating portion 31, as shown in Figures 3 and 4.

[0028] As can be seen from Figure 4, the terminal accommodating portion 31 has a substantially rectangular parallelepiped shape. The terminal accommodating portion 31 has a plurality of terminal accommodating holes 33 (ten in this example) that penetrate in the front-rear direction and are aligned in the width direction at predetermined intervals. The hood portion 32 has a rectangular hood shape that opens forward, and has a rectangular parallelepiped internal space 34 inside. The front end opening of the terminal accommodating hole 33 communicates with the internal space 34.

[0029] A pair of slits 35 that open upward, recess downward, and extend in the front-rear direction and penetrate the terminal accommodating portion 31 are formed at both widthwise ends of the terminal accommodating portion 31. The front end openings of the pair of slits 35 communicate with the internal space 34 of the hood portion 32 (see FIG. 4). The components that make up the connector 1 have been described above.

[0030] Next, a procedure for assembling the connector 1 will be described. First, the multiple terminals 10 are assembled into the housing 30. Specifically, as shown in FIG. 4, the connection portions 11 of the multiple terminals 10 are inserted into the multiple terminal accommodating holes 33 of the housing 30 from the rear. This insertion continues until the hanging portions 12 of the terminals 10 approach the front end surface of the terminal accommodating portion 31, as shown in FIG. 4.

[0031] 4, when the terminal 10 is completely assembled into the housing 30, the tip (front portion) of the connection portion 11 passes through the terminal accommodating hole 33 and is positioned within the internal space 34 of the hood portion 32, and the base (rear portion) of the connection portion 11 is accommodated and fixed in the terminal accommodating hole 33. When the housing of the mating connector is fitted into the hood portion 32, the tip portion of the connection portion 11 of the terminal 10 is connected to the mating terminal accommodated in the housing.

[0032] Once all of the terminals 10 have been assembled into the housing 30, the shield case 20 is then assembled into the housing 30. Specifically, as shown in Fig. 3, the pair of side plate portions 23 of the shield case 20 are inserted from above into the pair of slits 35 of the housing 30 (see also Fig. 4). This insertion continues until the lower surface of the connecting portion 24 of the shield case 20 comes into contact with the upper surface of the terminal accommodating portion 31 of the housing 30, as shown in Fig. 1.

[0033] 5, the assembled connector 1 is mounted on the upper surface of the circuit board 2 and housed in the housing 4. Specifically, first, a plurality of pegs 27 protruding downward from the connector 1 are fixed to predetermined fixing portions (not shown) of the circuit board 2. Next, the contact portions 13 of the plurality of terminals 10 are soldered to the conductor pattern formed on the upper surface of the circuit board 2.

[0034] At this time, since the movable part 22 is in the open position, a sufficient gap a is secured between the tip surface of the movable part 22 (the lower end surface of the second part 26) and the circuit board 2, as shown in Fig. 6. This allows the worker to easily check the state of soldering (the shape of the fillet) at the contact point P between the contact part 13 of the terminal 10 and the circuit board 2. This completes the mounting of the connector 1 on the circuit board 2 (see Fig. 5).

[0035] As shown in Fig. 5, the circuit board 2 on which the connector 1 is mounted is housed in a housing 4 consisting of a lower housing 41 and an upper housing 42 so as to be sandwiched between the lower housing 41 and the upper housing 42. In this embodiment, the housing 4 is made of a conductor such as metal. In order to house the circuit board 2 on which the connector 1 is mounted in the housing 4, as shown in Figs. 5 and 6, the circuit board 2 on which the connector 1 is mounted is placed on the upper surface of the lower housing 41, and from this state, the upper housing 42 is moved closer to the lower housing 41 from above, as shown in Fig. 6 (see Fig. 6).

[0036] As the upper housing 42 approaches the lower housing 41, the upper housing 42 presses downward on a portion of the movable part 22 that protrudes upward from the connector 1 (specifically, the boundary between the first part 25 and the second part 26), causing the movable part 22 to gradually approach the closed position from the open position (the gap a narrows).

[0037] Then, when lower housing 41 and upper housing 42 are joined together and circuit board 2 on which connector 1 is mounted is completely accommodated in housing 4, pair of protrusions 25a of movable part 22 is maintained in contact with upper housing 42 (i.e., a state in which it is pressed downward by upper housing 42), as shown in Fig. 7, and movable part 22 is maintained in the closed position (a position in which gap a is substantially eliminated). Also, when circuit board 2 on which connector 1 is mounted is completely accommodated in housing 4, protrusions 26a of movable part 22 is maintained in contact with hanging portion 12 of ground terminal 10B (i.e., a state in which it is pressed forward by upper housing 42), as shown in Fig. 7.

[0038] Even when the movable part 22 is in the closed position, there may be a gap a large enough to avoid interference between the movable part 22 and the conductor pattern of the circuit board 2, or there may be a small gap a due to manufacturing tolerances of the movable part 22. Furthermore, as long as the required EMC performance can be achieved, there may be a gap a of a size suitable for various purposes even when the movable part 22 is in the closed position.

[0039] 7, when the movable part 22 is in the closed position, the contact point P between the contact portion 13 of the terminal 10 and the circuit board 2 is covered by the movable part 22 in the closed position. That is, the tip of the connection portion 11 of the terminal 10 (the portion that will come into contact with the mating terminal) is covered by the main body 21 of the shielding case 20, and the contact point P is covered by the movable part 22 in the closed position. This improves the EMC performance of the connector 1 compared to a configuration in which the contact point P is not covered by a portion of the shielding case 20.

[0040] As described above, in the connector 1 and connector-equipped board 5 according to this embodiment, the movable portion 22, which is part of the shield case 20 integrally held in the housing 30, is movable from an open position (see FIGS. 1 and 6 ) that defines a gap a through which the contact points P between the terminals 10 and the circuit board 2 are visible from the outside to a closed position (see FIGS. 2 and 7 ) in which the gap a is narrower than in the open position. Because the connector 1 is mounted on the circuit board 2 with the movable portion 22 in the open position, an operator can easily check the state of the soldering at the contact points P between the terminals 10 and the circuit board 2. Furthermore, when the circuit board 2 on which the connector 1 is mounted is housed in the housing 4 consisting of the lower housing 41 and the upper housing 42, the housing 4 (upper housing 42) itself exerts an external force on the movable portion 22, displacing the movable portion 22 to the closed position. This improves EMC performance compared to conventional connectors in which the contact points P are exposed. Furthermore, in this embodiment, the protrusion 26 a provided on the shield case 20 is connected to the ground terminal 10B. This makes the ground potential of the ground terminal 10B more stable, further improving EMC performance. In this way, the connector 1 and connector-equipped board 5 according to this embodiment can simultaneously improve the EMC performance of the connector 1 and improve the reliability of the electrical connection between the connector 1 and the circuit board 2.

[0041] Furthermore, the connector 1 according to this embodiment does not require a separate cover for noise reduction or the like because at least a portion of the shield case 20 of the connector 1 itself can be used as the movable part 22. Therefore, since such a separate cover is not required, the workability of the assembly work can be improved and the cost required for the work can be reduced.

[0042] Furthermore, in the connector 1 according to this embodiment, the movable portion 22 of the shield case 20 has a cantilever shape extending from the main body 21 and is elastically deformable from the open position to the closed position. Therefore, even if the movable portion 22 is once displaced to the closed position, the movable portion 22 can be returned to the open position by releasing the external force acting on the movable portion 22. This allows the soldering condition at the contact point P to be easily inspected as needed, for example, during regular maintenance.

[0043] Furthermore, according to the connector 1 of this embodiment, not only the power terminal 10A and the ground terminal 10B but also the signal terminal 10C are accommodated within the connector 1. As described above, in the connector 1 of this embodiment, the ground terminal 10B is in contact with the shielding case 20, providing a stable ground. Therefore, most of the electromagnetic noise generated from the power terminal 10A flows to the stable ground terminal 10B, reducing the electromagnetic noise that reaches the signal terminal 10C and further improving EMC performance.

[0044] Furthermore, according to the connector 1 of this embodiment, the ground terminal 10B is provided between the power terminal 10A and the signal terminal 10C, which further reduces the electromagnetic noise that reaches the signal terminal 10C, thereby improving EMC performance.

[0045] Furthermore, the connector-equipped board 5 according to this embodiment is connected to the shield case 20, the ground terminal 10B, and the metal housing 4. Therefore, the housing 4 is also connected to ground, further improving the EMC performance.

[0046] The present invention is not limited to the above-described embodiments, and can be appropriately modified, improved, etc. Furthermore, the material, shape, size, number, location, etc. of each component in the above-described embodiments are arbitrary and not limited as long as they can achieve the present invention.

[0047] For example, in the above-described embodiment, all the terminals 10 are arranged in a row along the width direction, but this is not limited to this. As shown in FIG. 8, six power terminals 10A may be arranged in a matrix of two in the vertical direction and three in the width direction, two ground terminals 10B may be arranged along the vertical direction, and two signal terminals 10C may be arranged along the width direction. In this case, the ground terminal 10B is also provided between the power terminal 10A and the signal terminal 10C. The ground terminal 10B is also provided closer to the power terminal 10A. In this case, electromagnetic noise generated from the power terminal 10A flows to the ground terminal 10B, thereby reducing the electromagnetic noise that reaches the signal terminal 10C.

[0048] In the above-described embodiment, the signal terminals 10C are provided inside the connector 1, but this is not limitative. Providing the signal terminals 10C inside the connector 1 is not essential and may not be necessary.

[0049] For example, in the above embodiment, the movable part 22 of the shield case 20 is displaced from the open position to the closed position when subjected to a downward external force, and immediately returns to the open position when the external force is released. In contrast, the shield case 20 may have a locking structure that allows the movable part 22 to be locked to the main body 21 or the housing 30 when the movable part 22 is in the closed position. In this case, even if the external force acting on the movable part 22 is released, the movable part 22 will not return to the open position unless the locked state is intentionally released, thereby preventing the contact point P from being unintentionally exposed to the outside.

[0050] Furthermore, in the above embodiment, when the connector-equipped board 5 is accommodated in the housing 4, the movable part 22 is displaced from the open position to the closed position upon receiving an external force from a part of the housing 4 (the upper housing 42) (see FIGS. 6 and 7). In contrast to this, the connector 1 may be configured so that when a mating connector is mated with the connector 1, the movable part 22 is displaced from the open position to the closed position upon receiving an external force from the mating connector.

[0051] Furthermore, in the above embodiment, the housing 4 is made of metal, but this is not limiting and the housing 4 may be made of resin.

[0052] Here, the features of the embodiments of the board-mounted connector and the connector-equipped board according to the present invention described above will be briefly summarized and listed below in [1] to [4]. [1] A board-mounted connector (1) comprising: terminals (10) to be connected to a circuit board (2); a shield case (20) for noise reduction arranged to cover the terminals (10); and a housing (30) for integrally holding the terminals (10) and the shield case (20), The terminal (10) has a ground terminal (10B) to which ground is supplied and a power terminal (10A) to which power is supplied, At least a part of the shield case (20) The connector is configured to be displaceable from an open position in which a gap (a) is defined between the circuit board (2) and at least one portion, allowing a contact point between the terminal (10) and the conductor pattern on the circuit board (2) to be visible from outside the connector, to a closed position in which the contact point (P) is covered with the gap (a) narrower than when the at least one portion is in the open position, The shield case (20) has a first contact portion (26a) that comes into contact with the ground terminal (10B) in the closed position. Board mounted connector (1).

[0053] According to the configuration [1] above, at least a portion of the shielding case 20 (hereinafter referred to as the "movable portion 22") integrally held by the housing 30 can be moved from an open position, in which a gap a is defined between the shielding case 20 and the circuit board 2, allowing the contact points P between the terminals 10 and the conductor pattern to be visible from outside the connector 1, to a closed position, in which the gap a is narrowed even when the movable portion 22 is in the open position, thereby covering the contact points P. Therefore, for example, by mounting the connector 1 on the circuit board 2 with the movable portion 22 in the open position, an operator can easily check the state of the soldering at the contact points P. Furthermore, for example, when the connector 1 and the circuit board 2 are housed in another housing 4 after mounting, the movable portion 22 can be pressed against the housing 4 and displaced toward the closed position, thereby improving the EMC performance of the connector 1 compared to conventional connectors in which the contact points are exposed. Furthermore, the first contact portion 26a provided on the shield case 20 is connected to the ground terminal 10B. This makes the ground potential of the ground terminal 10B more stable, further improving EMC performance. In this way, the connector 1 of this configuration can achieve both improved EMC performance of the connector 1 and improved reliability of the electrical connection between the connector 1 and the circuit board 2.

[0054] Furthermore, the board-mounted connector 1 configured as described above does not require a separate metal cover or the like for noise reduction because the connector 1's own shield case 20 uses at least a portion of it as the movable part 22. This eliminates the need for such a separate cover, thereby improving the workability of the assembly work and reducing the cost required for the work.

[0055] The gap (a) between at least a portion of the shielding case (20) (i.e., the movable portion (22)) and the circuit board (2) only needs to narrow when the movable portion (22) moves from the closed position to the closed position, and it is not necessary to completely eliminate the gap (a) when the movable portion (22) is in the closed position. For example, when the movable portion (22) is in the closed position, a gap (a) due to manufacturing tolerances of the shielding case (20) or the housing may exist. Furthermore, the shielding case (20) (including the movable portion) does not necessarily need to cover the terminals (10) and contact points (P) so as to physically seal them, but only needs to electromagnetically cover the terminals (10) and contact points (P) to an extent that the required EMC performance can be achieved. For example, the shielding case (20) may have openings (e.g., heat dissipation holes) of a size determined taking into account the wavelength of the electromagnetic waves to be shielded, etc.

[0056] Examples of displacement of at least a portion of the shield case 20 (i.e., the movable portion 22) include a sliding movement in which the movable portion 22 slides relative to other portions, and a rotational movement in which the movable portion 22 rotates relative to other portions. Furthermore, for example, the entire shield case 20 may be held so as to be movable relative to the housing 30, and the entire shield case 20 (i.e., the movable portion 22) may be displaced. As such, the manner of displacement is not particularly limited as long as at least a portion of the shield case 20 is displaceable from the open position to the closed position.

[0057] [2] In the board-mounted connector (1) described in [1], The terminal (10) has a signal terminal (10C) to which a signal is supplied. Board mounted connector (1).

[0058] According to the configuration [2] above, the connector 1 accommodates not only the power terminal 10A and the ground terminal 10B but also the signal terminal 10C. As described above, in the connector 1 according to this configuration, the ground terminal 10B is in contact with the shielding case 20, providing a stable ground. Therefore, most of the electromagnetic noise generated from the power terminal 10A flows to the stable ground terminal 10B, reducing the electromagnetic noise that reaches the signal terminal 10C, thereby further improving EMC performance.

[0059] [3] In the board-mounted connector (1) described in [2], The ground terminal (10B) is disposed between the power supply terminal (10A) and the signal terminal (10C). Board mounted connector (1).

[0060] According to the configuration [3] above, the ground terminal (10B) is provided between the power terminal (10A) and the signal terminal (10C), which further reduces the electromagnetic noise that reaches the signal terminal (10C) and improves EMC performance.

[0061] [4] A board-mounted connector (1) according to any one of [1] to [3], a circuit board (2) on which the connector (1) is mounted; a housing (4) that houses the connector (1) and the circuit board (2); The shield case (20) has a second contact portion (25a) that comes into contact with the housing (4). Board with connector (5).

[0062] According to the configuration [4] above, at least a portion of the shielding case 20 (hereinafter referred to as the "movable portion 22") integrally held by the housing 30 can be moved from an open position, in which a gap a is defined between the shielding case 20 and the circuit board 2, allowing the contact points P between the terminals 10 and the conductor pattern to be visible from outside the connector 1, to a closed position, in which the gap a is narrowed even when the movable portion 22 is in the open position, thereby covering the contact points P. Therefore, for example, by mounting the connector 1 on the circuit board 2 with the movable portion 22 in the open position, an operator can easily check the state of the soldering at the contact points P. Furthermore, for example, when the connector 1 and the circuit board 2 are housed in another housing 4 after mounting, the movable portion 22 can be pressed against the housing 4 to move toward the closed position, thereby improving the EMC performance of the connector 1 compared to conventional connectors in which the contact points are exposed. Furthermore, the first contact portion 26a provided on the shield case 20 is connected to the ground terminal 10B. This makes the ground potential of the ground terminal 10B more stable, further improving EMC performance. In this way, the connector 1 of this configuration can achieve both improved EMC performance of the connector 1 and improved reliability of the electrical connection between the connector 1 and the circuit board 2. [Explanation of symbols]

[0063] 1. PCB-mounted connector 2 Circuit Boards 4. Cabinet 5 PCB with connector 10 terminals 10A power terminal 10B Ground terminal 10C signal terminal 20 Shield case 25a Projection (second contact part) 26a Projection (1st contact part) 30 Housing a gap P Contact point

Claims

1. A board-mounted connector comprising: terminals to be connected to a circuit board; a noise-reducing shield case arranged to cover the terminals; and a housing that integrally holds the terminals and the shield case, the terminals include a ground terminal to which a ground is supplied and a power terminal to which power is supplied; At least a portion of the shield case is the connector is configured to be displaceable from an open position in which a gap is defined between the circuit board and at least one portion, allowing a contact point between the terminal and the conductor pattern on the circuit board to be visible from outside the connector, to a closed position in which the contact point is covered with the gap narrower than when the at least one portion is in the open position, the at least one portion of the shield case has a first contact portion that contacts the ground terminal in the closed position; Board mounted connector.

2. 2. The board-mounted connector according to claim 1, The terminals include signal terminals to which signals are supplied. Board mounted connector.

3. 3. The board-mounted connector according to claim 2, The ground terminal is disposed between the power supply terminal and the signal terminal. Board mounted connector.

4. A board-mounted connector according to any one of claims 1 to 3; a circuit board on which the connector is mounted; a housing that houses the connector and the circuit board, the shield case has a second contact portion that comes into contact with the housing; Board with connector.

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