Board connector device

Abstract

To improve operability in departure of a substrate.SOLUTION: A connector device of a substrate comprises: a main substrate 10; a main connector 16 that is mounted onto a mounting surface 11 of the main substrate 10; a sub-connector 30 that has a second sub-substrate 35 and is attached to the main substrate 10 in a state where the second sub-substrate 35 is connected to the main connector 16; and a retainer 50 that is provided to the sub-connector 30, holds the sub-connector 30 to an attachment state to the main substrate 10 by being engaged with the main substrate 10, and can separate the sub-connector 30 from the main substrate 10 by being detached from the main substrate 10.SELECTED DRAWING: Figure 9

Description

[Technical field]

[0001] The present disclosure relates to a board connector device. [Background technology]

[0002] Patent Document 1 discloses a board connector device that includes a board and a connector into which the board is inserted. Elastic contact piece The terminal has a resilient contact piece that resiliently contacts the board. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6801936 Summary of the Invention [Problem to be solved by the invention]

[0004] The above-mentioned board connector device can maintain the terminal metal fittings and the board in a connected state by frictional resistance caused by the elasticity of the elastic contact pieces. When this board connector device is mounted on a vehicle, there is a concern that the board and the terminal metal fittings may be displaced relative to each other due to vibrations during driving, resulting in poor contact, so it is necessary to increase the elasticity of the elastic contact pieces to increase the frictional resistance between the terminal metal fittings and the board. However, the tradeoff is that the resistance when inserting and removing the board into and from the connector becomes excessive, reducing workability. In particular, when removing the board from the connector, it is necessary to pull the board toward the user, so if there is no part on the board side to hook a finger, the work becomes difficult.

[0005] The board connector device of the present disclosure has been completed in light of the above circumstances, and aims to improve the ease of operation when removing the board. [Means for solving the problem]

[0006] The board connector device of the present disclosure is The main board, a main connector mounted on a mounting surface of the main board; a sub-connector having a sub-board and attached to the main board in a state in which the sub-board is connected to the main connector; The sub-connector is provided with a retainer that engages with the main board to maintain the sub-connector attached to the main board and that can be detached from the main board by disengaging it from the main board. Effect of the Invention

[0007] According to the present disclosure, it is possible to improve the workability when removing the substrate. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view of a board connector device as viewed obliquely from above and in front. [Diagram 2] FIG. 2 is a perspective view of the main board with the sub-connector and the holding member removed, as viewed obliquely from above and from the front. [Diagram 3] FIG. 3 is a perspective view of the sub-connector in a disassembled state, as viewed obliquely from above and from the front. [Figure 4] FIG. 4 is a perspective view of the sub-connector as viewed obliquely from above and behind. [Diagram 5] FIG. 5 is a perspective view of the sub-connector in a disassembled state, as viewed obliquely from above and rearward. [Figure 6] FIG. 6 is a perspective view of the sub-connector and the holding member as viewed obliquely from below and from the front. [Figure 7] FIG. 7 is a perspective view of the front member and the retainer in a separated state, as viewed obliquely from below and from the front. [Figure 8] FIG. 8 is a side cross-sectional view showing the sub-connector attached to the main board. [Figure 9]FIG. 9 is a side cross-sectional view showing a state in which the sub-connector is released from the retainer and can be removed from the main board. [Figure 10] FIG. 10 is a bottom view showing the sub-connector attached to the main board. [Figure 11] FIG. 11 is a bottom view showing a state in which the sub-connector is released from the retainer and can be removed from the main board. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] [Description of the embodiments of the present disclosure] First, embodiments of the present disclosure will be listed and described. The board connector device of the present disclosure is (1) A main board, a main connector mounted on a mounting surface of the main board, a sub-connector having a sub-board and attached to the main board with the sub-board connected to the main connector, and a retainer provided on the sub-connector, which holds the sub-connector attached to the main board by engaging with the main board and allows the sub-connector to be detached from the main board by detaching it from the main board. According to the configuration of the present disclosure, the sub-board and the main connector are held in a connected state by the retainer without increasing the frictional resistance between the sub-board and the main connector, thereby improving the workability when detaching the sub-board from the main connector.

[0010] (2) In paragraph (1), It is preferable that the retainer has an operating portion exposed at the outer periphery of the main board when the retainer is engaged with the main board, and that the retainer is released from the main board by applying a pushing force parallel to the main board to the operating portion. With this configuration, the sub-connector can be easily removed from the main board.

[0011] (3) In (1) or (2), it is preferable that the retainer has a protruding portion disposed on a surface of the sub-connector facing the mounting surface, and that the protruding portion is housed in a notch formed in the main board when the sub-connector is attached to the main board. With this configuration, the protruding portion of the retainer is housed within the thickness of the main board, so that the main board can be made thinner in the thickness direction than when the protruding portion is placed on the mounting surface of the main board.

[0012] (4) In (3), it is preferable that the notch is disposed only within the area of ​​the mounting surface that is covered by the sub-connector. With this configuration, the mounting surface of the main board can be effectively used for arranging circuits, elements, etc.

[0013] (5) In any of (1) to (4), the main board is preferably provided with a removal pressing portion that presses the sub-connector in a direction to remove it from the main board. With this configuration, when the retainer is released from the main board, the removal pressing portion presses the sub-connector in the direction to remove it from the main board, which provides excellent operability during removal.

[0014] (6) In (5), it is preferable that the removal pressing portion is made of an elastic material and elastically presses the sub-connector in the removal direction when the retainer is engaged with the main board. With this configuration, the workability when removing the sub-connector from the main board is further improved.

[0015] (7) In (6), it is preferable that the main board is provided with a holding member that holds the sub-connector in an attached state to the main board by friction between the main board and the sub-connector, and the elastic force applied to the sub-connector by the removal pressure portion is set to a strength greater than the holding force of the holding member. With this configuration, the sub-connector can be held attached to the main board without rattling. Also, the removal pressure portion can be used to hold the sub-connector against the main board and Retaining material can be removed from

[0016] In (8) and (7), it is preferable that the holding member is made of a conductive material and is connected to the ground circuit of the main board, and an outer conductor constituting the sub-connector is in contact with the holding member. With this configuration, electromagnetic noise can be dropped to the ground circuit via the outer conductor and the holding member.

[0017] (9) In the configurations (7) and (8), it is preferable that the holding member has a box shape surrounding the sub-connector. With this configuration, a high shielding effect can be obtained by the outer conductor and the holding member.

[0018] [Details of the embodiment of the present disclosure] [Example 1] A first embodiment of the present disclosure will be described with reference to Figs. 1 to 11. Note that the present invention is not limited to these examples, but is indicated by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims. In this first embodiment, with regard to the front-rear direction, the positive direction of the X-axis in Figs. 1 to 11 is defined as the front. With regard to the left-right direction, the positive direction of the Y-axis in Figs. 1 to 7, 10, and 11 is defined as the right. With regard to the up-down direction, the positive direction of the Z-axis in Figs. 1 to 9 is defined as the up.

[0019] The board connector device of the present disclosure is mounted, for example, on an automobile and constitutes an in-vehicle communication circuit for automatic driving control by Ethernet (registered trademark). As shown in Figs. 1 and 2, the board connector device has a main board 10, a main connector 16, and a sub-connector 30. The main connector 16 and the sub-connector 30 constitute a card edge connector. In this embodiment 1, for convenience, it is assumed that the main board 10 is mounted on the vehicle in a horizontal orientation. The upper surface of the main board 10 functions as a mounting surface 11. Components such as a communication circuit (not shown) and a power circuit (not shown) consisting of a SOC (System on a chip) or a SiP (System in a package) are attached to the mounting surface 11.

[0020] A main connector 16 is fixed to the mounting surface 11 of the main board 10. As shown in Fig. 2, the main connector 16 has a board accommodating space 17. The board accommodating space 17 opens in the shape of a long and narrow slit in the left-right direction on the front surface of the main connector 16. The main connector 16 accommodates a plurality of terminal fittings 18 facing into the board accommodating space 17.

[0021] 2, a cutout 12 is formed in the main board 10 at a position forward of the main connector 16. The cutout 12 has a rectangular shape in a plan view of the main board 10 seen from above, and is open at the front edge of the main board 10. A pair of locking holes 13 are formed in the main board 10 and spaced apart in the left-right direction. The pair of locking holes 13 are located near the rear of the cutout 12 and forward of the main connector 16.

[0022] As shown in Fig. 2, a ground circuit 14 is formed on the mounting surface 11. A plurality of connection holes 15 are formed in the main board 10, each of which penetrates the ground circuit 14. The connection holes 15 are spaced apart in the front-rear direction over the region from the locking hole 13 to the rear end of the main connector 16, and are arranged in two separate left and right rows. The two left and right rows of connection holes 15 are arranged to sandwich the locking hole 13 and the main connector 16 from both the left and right sides.

[0023] A holding member 20 is attached to the main board 10. As shown in FIG. 2, the holding member 20 is a single member in the shape of a rectangular box with the front and bottom open, and has an upper plate 21 and left and right side plate portions 22. The holding member 20 is made of a conductive material such as metal or conductive resin, and has a shielding function. The holding member 20 is attached to the main board 10 by inserting the legs 23 protruding from the lower edges of the left and right side plate portions 22 into the connection holes 15 and soldering the inserted parts (not shown). A connection space 24 surrounded by the main board 10 and the holding member 20 is formed above the main board 10. The connection space 24 is open forward. The main connector 16 is accommodated in the rear end area of ​​the connection space 24.

[0024] As shown in Figs. 2 and 8, a plurality of holding protrusions 25 are formed on the upper plate 21 and the left and right side plate portions 22. The holding protrusions 25 are formed by cutting and raising so as to protrude into the inside of the holding member 20. As shown in Figs. 8 and 9, a pair of detachment pressing portions 26 spaced apart in the left-right direction are integrally formed on the holding member 20. The detachment pressing portions 26 are formed by cutting and raising a part of the upper plate 21 so as to protrude into the inside of the holding member 20. The detachment pressing portions 26 protrude in a plate shape obliquely downward and forward from the upper plate 21. The detachment pressing portions 26 are capable of elastic deformation in the front-rear direction with the upper edge connected to the upper plate 21 as a fulcrum.

[0025] The sub-connector 30 is a connector with a shielding function, and has one card edge connection portion 37 and multiple connection ports 44, as described below. In this embodiment, multiple types of sub-connectors 30 with different numbers of connection ports 44 are prepared for the main board 10, which is a common member. In this embodiment 1, for convenience, only one type of sub-connector 30 having four connection ports 44 is illustrated. One board connector device is configured by attaching one sub-connector 30 arbitrarily selected from the multiple sub-connectors 30 to the main board 10, which is a common member.

[0026] An ECU (Electronic Control Unit) of an autonomous driving control device (not shown) attached to the vehicle body is connected to each connection port 44 of the sub-connector 30. An example of the autonomous driving control device is LiDAR (Light Detection and Ranging). Since the number of autonomous driving control devices varies depending on the grade of the vehicle and the number of options, the number of connection ports 44 of the sub-connector 30 must be changed according to the number of devices to be connected. The sub-connector 30 can be attached and detached to the main connector 16 as necessary, so that an increase or decrease in the number of connection ports 44 can be accommodated without replacing the main board 10, which has a common structure.

[0027] The sub-connector 30 includes one connector body 31 and one retainer 50. As shown in Figs. 3 and 5, the connector body 31 includes a plurality of pairs of inner conductors 32, one dielectric 33, two sub-substrates 34 and 35, one outer conductor 40, and a fitting member 45. Each inner conductor 32 is made of a thin and long metal part. A pair of inner conductors 32 arranged side by side on the left and right constitutes one differential pair circuit. The dielectric 33 is a plate-like member with its thickness direction facing the front-rear direction. The inner conductor 32 is attached to the dielectric 33 in a state where it penetrates the dielectric 33 in the front-rear direction.

[0028] Of the two sub-boards 34, 35, the first sub-board 34 is assembled in a state where it is overlapped against the rear surface of the dielectric 33 with its plate thickness direction facing the front-rear direction. The inner conductor 32 is connected to the first sub-board 34 in a state where it penetrates through it. Of the two sub-boards 34, 35, the second sub-board 35 is disposed behind the first sub-board 34 with its plate thickness direction facing the up-down direction. The first sub-board 34 and the second sub-board 35 are connected via a flexible cable 36. The rear edge portion of the second sub-board 35 functions as a card edge connection portion 37.

[0029] As shown in Figs. 3, 8 and 9, the outer conductor 40 is formed by assembling a front member 41, a lower case 42 and an upper case 43. The front member 41, the lower case 42 and the upper case 43 are all made of metal. The lower case 42 may be made of synthetic resin. The front member 41 has four connection ports 44 in a rectangular tube shape. The four connection ports 44 are aligned in the vertical and horizontal directions. The front member 41 is attached to the front surface of the dielectric 33 in a superimposed state. The four pairs of inner conductors 32 attached to the dielectric 33 are arranged so that each pair penetrates the connection port 44. A pair of inner conductors 32 is arranged in one connection port 44. A fitting member 45 made of synthetic resin is attached to the front surface of the front member 41. Four through holes 46 formed in the fitting member 45 are provided with Each connection port 44 is penetrated.

[0030] As shown in Figs. 6 and 7, a pair of symmetrical guide portions 47 for attaching a retainer 50 (described later) to the outer conductor 40 is formed at the lower end of the front member 41. In a front view of the front member 41, the pair of guide portions 47 are bent at a right angle. A protruding pressing portion 48 is formed at the lower end surface of the front member 41. The protruding pressing portion 48 is disposed at a position shifted leftward from the center in the left-right direction of the outer conductor 40. The protruding pressing portion 48 cooperates with a protruding portion 54 and an elastic arm portion 55 of the retainer 50 (described later) to form a locking structure for holding the sub-connector 30 attached to the main board 10 and the female connector. The locked state of this locking structure is released by pushing the retainer 50.

[0031] The lower case 42 is attached to the lower end of the front member 41. The lower case 42 extends horizontally rearward from the front member 41 below the first sub-board 34 and the second sub-board 35. The second sub-board 35 is placed on the top surface of the lower case 42. The upper case 43 is attached to cover the second sub-board 35 from above, and is fixed to the second sub-board 35 and the lower case 42 with screws 49 (see FIG. 3).

[0032] The retainer 50 is a single component made of synthetic resin that is attached to the connector body 31. The retainer 50 has a locking function for maintaining the sub-connector 30 attached to the main connector 16. The sub-connector 30 can be removed from the main connector 16 by performing an unlocking operation on the retainer 50.

[0033] As shown in FIG. 7, the retainer 50 has a plate-shaped main body 51 whose thickness direction faces the up-down direction, and a pair of lock arms 56 that are symmetrical on the left and right. The front edge of the plate-shaped main body 51 is formed with an unlocking operation part 52 that protrudes downward like a rib. As shown in FIGS. 10 and 11, the plate-shaped main body 51 is formed with a rectangular operating space 53 that opens on both the front and back sides of the plate-shaped main body 51. A protrusion 54 that is trapezoidal in plan view is disposed within the operating space 53. The protrusion 54 protrudes rearward from the front edge of the opening edge of the operating space 53.

[0034] An elastic arm portion 55 is disposed in a region behind the protrusion portion 54 within the working space 53. The elastic arm portion 55 extends leftward in a cantilever shape from the right edge of the opening edge of the working space 53. The protrusion portion 54 is disposed at the same position in the left-right direction as the center of the extension direction of the elastic arm portion 55. The elastic arm portion 55 is adapted to be elastically deformable in the front-rear direction with a base end portion of the elastic arm portion 55 that is connected to the opening edge of the working space 53 as a fulcrum. When the elastic arm portion 55 is not elastically deformed, a clearance in the front-rear direction is secured between the elastic arm portion 55 and the protrusion portion 54.

[0035] As shown in Figs. 7, 10 and 11, the pair of lock arms 56 extend backward in a cantilever shape from the rear ends of the left and right edges of the plate-shaped main body 51. The front ends of the lock arms 56 are stepped outward in the left-right direction beyond the outer surface of the plate-shaped main body 51. A downwardly protruding locking protrusion 57 is formed at the rear end of the lock arms 56. As shown in Figs. 8 and 9, the front surface of the locking protrusion 57 is perpendicular to the front-rear direction and functions as a locking surface 58 that locks the locking hole 13 of the main board 10 from the rear. The rear surface of the locking protrusion 57 functions as a guide surface 59 that is inclined with respect to the front-rear direction. The lock arms 56 are elastically deformable in the vertical direction with the front ends connected to the plate-shaped main body 51 as a fulcrum.

[0036] The retainer 50 is attached to the connector body 31. The plate-shaped main body 51 is overlapped on the lower end surface of the fitting member 45 and the front member 41. The left and right side edge portions of the plate-shaped main body 51 are slidably fitted into a pair of guide portions 47. The retainer 50 is guided by the guide portions 47, so that it can move relative to the connector body 31 between a locked position (see FIGS. 8 and 10) and an unlocked position (see FIGS. 9 and 11) behind the locked position. The protruding pressing portion 48 of the outer conductor 40 is disposed within the operating space 53. The protruding pressing portion 48 is disposed between a free end portion 55F (extending end portion) of the elastic arm portion 55 and a rear edge portion at the opening edge of the operating space 53.

[0037] When attaching the sub-connector 30 to the main board 10, the fitting member 45 and the front member 41 of the connector body 31 are pinched, and the connector body 31 is accommodated in the connection space 24 while being aligned with the mounting surface 11 from the front of the main board 10. In the connection space 24, the holding protrusions 25 slide against the top surface and both left and right outer surfaces of the connector body 31, so that the connector body 31 is positioned in the up-down and left-right directions relative to the main board 10. This positioning action allows the card edge connection portion 37 of the sub-connector 30 to be inserted into the board accommodation space 17 without interfering with the front surface of the main connector 16. In the board accommodation space 17, the terminal fittings 18 elastically contact the card edge connection portion 37. As a result of the above, the attachment of the sub-connector 30 to the main board 10 is completed, and the connection between the main connector 16 and the sub-connector 30 is also completed.

[0038] During the process of attaching the sub-connector 30 (i.e., the process of connecting the two connectors 16, 30), the guide surface 59 of the locking projection 57 interferes with the front edge of the main board 10 just before the connection of the two connectors 16, 30 is completed. When the attachment operation of the connector body 31 proceeds from this state, the rear end of the guide portion 47 presses the front end of the locking arm 56, causing the locking arm 56 to elastically displace upward and the locking projection 57 to ride up onto the mounting surface 11. Then, when the connection of the two connectors 16, 30 is completed, the locking arm 56 elastically returns downward and the locking projection 57 engages with the locking hole 13. This locking action holds the retainer 50 in a state in which its relative forward displacement with respect to the main board 10 is restricted.

[0039] During the process of connecting the connectors 16, 30, the removal pressing portion 26 of the holding member 20 is elastically displaced rearward by being pressed by the rear end of the upper case 43. When the connection of the connectors 16, 30 is complete, the elastic restoring force of the removal pressing portion 26 presses the connector body 31 in a direction in which it is removed forward from the main connector 16. This pressing force displaces the connector body 31 forward relative to the retainer 50, and the protruding pressing portion 48 presses the free end 55F (left end) of the elastic arm portion 55 forward, so that the elastic arm portion 55 is elastically displaced forward and the central portion of the elastic arm portion 55 in the left-right direction comes into contact with the protruding portion 54.

[0040] The attachment position of the sub-connector 30 to the main board 10 and the main connector 16 is determined when the elastic restoring force of the elastic arm portion 55 elastically displaced forward, the elastic restoring force of the removal pressing portion 26 elastically deformed backward, the frictional resistance between the holding projection 25 and the connector body 31, and the frictional resistance between the card edge connection portion 37 and the terminal fitting 18 are balanced (see FIG. 10). When the sub-connector 30 is attached to the main board 10 and the main connector 16, the plate-shaped main body portion 51 of the retainer 50 is housed in the notch portion 12 of the main board 10 and is arranged in the lock position. The operation portion 52 of the retainer 50 is exposed at the front edge portion of the main board 10. The front end of the operation portion 52 is arranged at the same position as the front end of the main board 10 in the front-rear direction.

[0041] When removing the sub-connector 30 attached to the main board 10 and the main connector 16, the operating portion 52 of the retainer 50 is pushed from the front to the rear of the main board 10 to move it to the unlocked position. During the process of pushing in the retainer 50, as shown in FIG. 9, the locking arm 56 is elastically displaced upward due to the inclination of the guide surface 59, and the locking protrusion 57 moves upward out of the locking hole 13 and rides onto the upper surface of the front edge of the lower case 42.

[0042] While the retainer 50 is moving to the unlocking position, the free end 55F of the elastic arm 55 is in contact with the protruding pressing portion 48 in the operating space 53 of the retainer 50, so that the elastic arm 55 moves forward relative to the protruding portion 54. As a result, the protruding portion 54 presses the left-right central portion of the elastic arm 55 from the front, so that the elastic arm 55 is elastically deformed so as to bulge backward, as shown in FIG. 11. When the elastic deformation of the elastic arm 55 reaches a certain level, the retainer 50 cannot be pushed any further in the unlocking direction. The position of the retainer 50 at this time is the unlocking position.

[0043] When the retainer 50 reaches the unlocked position, the locking projection 57 is released from the locking hole 13, and the retainer 50 and the connector body 31 can move forward relative to the main board 10. While the retainer 50 moves from the locked position to the unlocked position, the elastic force of the removal pressing portion 26 of the holding member 20 is always applied to the connector body 31. When the finger is released from the operating portion 52 after the retainer 50 is pushed into the unlocked position, the connector body 31 is pushed forward by the elastic force of the removal pressing portion 26. At this time, the retainer 50 moves forward relative to the connector body 31 due to the pressing force acting from the protruding pressing portion 48 on the elastic arm portion 55 and the protruding portion 54, and returns to the locked position. After this, the sub-connector 30 can be pulled forward by holding the fitting member 45 or the front member 41 of the sub-connector 30.

[0044] The board connector device of the first embodiment includes a main board 10, a main connector 16 mounted on the mounting surface 11 of the main board 10, and a sub-connector 30. The sub-connector 30 includes sub-boards 34 and 35, and is attached to the main board 10 with a second sub-board 35 connected to the main connector 16. The sub-connector 30 is provided with a retainer 50 that holds the sub-connector 30 in a mounted state on the main board 10 by engaging with the main board 10. The sub-connector 30 can be removed from the main board 10 by releasing the retainer 50 from the main board 10. According to this configuration, the second sub-board 35 and the main connector 16 are held in a connected state by the retainer 50 without increasing the frictional resistance between the second sub-board 35 and the main connector 16, so that the workability when removing the second sub-board 35 from the main connector 16 can be improved.

[0045] The retainer 50 has an operating portion 52. The operating portion 52 is exposed at the outer periphery of the main board 10 when the locking protrusions 57 of the locking arms 56 are locked in the locking holes 13 of the main board 10. The retainer 50 is released from the main board 10 by applying a pushing force parallel to the main board 10 to the operating portion 52. This configuration provides good operability when removing the sub-connector 30 from the main board 10.

[0046] The retainer 50 has a plate-shaped main body 51 (projection) arranged on the surface (lower surface) facing the mounting surface 11 of the sub-connector 30. When the sub-connector 30 is attached to the main board 10, the plate-shaped main body 51 is accommodated in a notch 12 formed in the main board 10. Compared to a case in which the plate-shaped main body 51 is placed on the mounting surface 11 of the main board 10, the main board 10 can be made lower in the thickness direction. The notch 12 is arranged only within the range of the area of ​​the mounting surface 11 that is covered by the sub-connector 30. With this configuration, the mounting surface 11 of the main board 10 can be effectively used for arranging circuits, elements, etc.

[0047] The main board 10 is provided with a removal pressing portion 26 that presses the sub-connector 30 in a direction to remove it from the main board 10. The removal pressing portion 26 is formed on the holding member 20 fixed to the main board 10. When the locking protrusion 57 of the retainer 50 is released from the locking hole 13 of the main board 10, the removal pressing portion 26 presses the sub-connector 30 in a direction to remove it from the main board 10, so that the workability during removal is excellent. The removal pressing portion 26 is made of an elastic material. The removal pressing portion 26 elastically presses the sub-connector 30 in the removal direction (forward) while the retainer 50 is engaged with the main board 10. This configuration further improves the workability during removal of the sub-connector 30 from the main board 10.

[0048] A holding member 20 having a holding protrusion 25 is fixedly provided on the main board 10. The holding member 20 holds the sub-connector 30 attached to the main board 10 by the frictional force between the holding protrusion 25 and the sub-connector 30. The elastic force applied to the sub-connector 30 by the removal pressing portion 26 is set to a strength greater than the holding force of the holding member 20. With this configuration, the sub-connector 30 can be held attached to the main board 10 without any rattling. In addition, the removal pressing portion 26 secures the sub-connector 30 to the main board 10 and Holding member 20 can be removed from

[0049] The holding member 20 is made of a conductive material and is connected to the ground circuit 14 of the main board 10. An upper case 43 constituting the outer conductor 40 of the sub-connector 30 is in contact with the holding member 20. With this configuration, electromagnetic noise can be dropped to the ground circuit 14 by passing through the outer conductor 40 and the holding member 20. The holding member 20 has a box shape surrounding the sub-connector 30. With this configuration, a high shielding effect can be obtained by the outer conductor 40 and the holding member 20.

[0050] [Other Examples] The present invention is not limited to the embodiments described above and shown in the drawings, but is indicated by the claims. The present invention includes the equivalent meaning of the claims and all modifications within the scope of the claims, including the following embodiments. The retainer may be disengaged from the main board by being pulled from the state in which it is engaged with the main board. The protruding portion of the retainer may be placed on the mounting surface of the main board. At least a portion of the cutout may be disposed in an area of ​​the mounting surface that is not covered by the sub-connector. The main board may be configured not to have a removal pressing portion. The sub-connector may be detached from the main board by manually operating the detachment pressing portion. The retaining member may be made of a non-conductive material. The retaining member may have a shape other than a box shape. The board connector device of the present disclosure is not limited to use in Ethernet communication circuits, but can also be used in communication circuits other than Ethernet and power circuits. The board connector device of the present disclosure can also be applied to cases where the sub-connector does not have a connection port and is connected to the end of a conductive path such as a wire harness or a flexible cable. [Explanation of symbols]

[0051] 10…Main circuit board 11...Mounting surface 12…Notch 13...Latching hole 14…Ground circuit 15...Connection hole 16…Main connector 17...Substrate storage space 18...Terminal metal fitting 20...Retaining member 21…Upper plate 22…Both left and right side plates 23...legs 24…Connected Space 25…Retaining protrusion 26…Detachment pressure part 30...Sub-connector 31…Connector body 32…Inner conductor 33...Dielectric 34...First sub-board (sub-board) 35...Second sub-board (sub-board) 36…Flexible cable 37…Card edge connection 40…Outer conductor 41…Front member 42…Lower case 43…Upper case 44…Connection port 45...Fitting member 46…Through hole 47…Guide section 48...Protruding pressure part 49...Bis 50…Retainer 51...Plate-shaped main body (projection) 52...Operation unit 53...Working space 54...Protrusion 55…Elastic arm part 55F…Free end of elastic arm 56…Lock arm 57...Latching protrusion 58…Latching surface 59…Guiding surface

Claims

1. The main board, a main connector mounted on a mounting surface of the main board; a sub-connector having a sub-board and attached to the main board in a state in which the sub-board is connected to the main connector; a retainer provided on the sub-connector, the retainer engaging with the main board to hold the sub-connector attached to the main board and disengaging from the main board to allow the sub-connector to be removed from the main board; The main board has a locking hole formed therein, When the connection between the main connector and the sub-connector is completed, the retainer is engaged with the engagement hole.

2. the retainer has an operation portion that is exposed at an outer periphery of the main board when the retainer is engaged with the main board, 2. The board connector device according to claim 1, wherein the retainer is released from the main board by applying a pushing force to the operating portion in parallel with the main board.

3. the retainer has a protruding portion disposed on a surface facing the mounting surface of the sub-connector, 3. The board connector device according to claim 1, wherein the protruding portion is accommodated in a notch formed in the main board when the sub-connector is attached to the main board.

4. 4. The board connector device according to claim 3, wherein the notch is disposed only within a range of an area of ​​the mounting surface that is covered by the sub-connector.

5. 5. The board connector device according to claim 1, wherein the main board is provided with a removal pressing portion that presses the sub-connector in a direction to remove it from the main board.

6. 6. The board connector device according to claim 5, wherein said removal pressing portion is made of an elastic material and elastically presses said sub-connector in the removal direction when said retainer is engaged with said main board.

7. a holding member is provided on the main board to hold the sub-connector in a mounted state on the main board by friction between the holding member and the sub-connector; 7. A circuit board connector device according to claim 6, wherein the elastic force applied to the sub-connector by the removal pressing portion is set to a strength greater than the holding force of the holding member.

8. the holding member is made of a conductive material and is connected to a ground circuit of the main board; 8. A circuit board connector device according to claim 7, wherein an outer conductor constituting said sub-connector is in contact with said holding member.

9. 9. The circuit board connector device according to claim 7, wherein said holding member is shaped like a box surrounding said sub-connector.

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