JP6731647B2 - USB outlet - Google Patents

Description

The present invention relates to a USB outlet.

Conventionally, a USB outlet having a USB socket into which a USB plug is inserted and connected has been provided (for example, see Patent Document 1).

Some USB sockets of this type include a printed wiring board on which the above USB socket is mounted and a housing having a plug insertion hole into which the above USB plug is inserted and which houses the above printed wiring board. .. The USB socket is mounted so that the insertion/removal direction of the USB plug is the thickness direction of the printed wiring board.

JP, 2011-82802, A

In the above USB outlet, when the USB socket receives a pressing force from the USB plug, the printed wiring board may be bent and deformed. If the plastic deformation (bending) of the printed wiring board progresses through repeated insertion/removal of the USB plug, a problem such as catching during insertion/removal of the USB plug may occur eventually.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a USB outlet capable of effectively utilizing space.

A USB outlet of the present invention includes a first printed wiring board having a first main surface and a second main surface, a USB socket and a first circuit component mounted on the first main surface of the first printed wiring board, A second circuit component mounted on the second main surface of the first printed wiring board, and arranged on the second main surface side of the first printed wiring board and having a third main surface and a fourth main surface. A second printed wiring board; a third circuit component mounted on the third main surface of the second printed wiring board; and a fourth circuit component mounted on the fourth main surface of the second printed wiring board. , wherein the first printed wiring board, the second is located on the third main surface side of the printed wiring board, the height of the first circuit component is much larger than the height of the second circuit component, The height of the fourth circuit component is greater than the height of the third circuit component.

According to the present invention, the space on the USB socket side can be effectively used by bringing the first circuit component having a height to the USB socket side.

It is sectional drawing which shows embodiment of this invention. (A) and (b) are the partially broken perspective views showing the same as above, and (a) and (b) show the states viewed from opposite directions, respectively, at different positions. (A) and (b) are partially broken exploded perspective views showing the same as above, and (a) and (b) show a state where they are broken at different positions and viewed from opposite directions. FIG. 7 is an exploded perspective view showing a state in which the second printed wiring board is assembled to the body in the same as above. It is an exploded perspective view showing the same as above. It is a perspective view which shows the same as the above. It is a partially broken exploded perspective view showing the same as above. It is a perspective view which shows the state in which the attachment frame was attached to the same as the above. It is an exploded perspective view showing the same as above and a mounting frame. It is a top view which shows the body same as the above. It is a bottom view which shows the cover same as the above.

Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.

In the present embodiment, as shown in FIGS. 1 to 9, a printed wiring board (hereinafter, referred to as “first printed wiring board”) 2 on which a USB socket 1 is mounted and a USB connected to the USB socket 1 are connected. A housing 3 having a plug insertion hole 30 into which a plug (not shown) is inserted and housing the printed wiring board 2. The USB socket 1 is mounted on the first printed wiring board 2 so that the direction in which the USB plug is inserted/removed faces the thickness direction of the first printed wiring board 2.

Hereinafter, the ABCDEF direction in FIG. 4 is referred to as the up-down, left-right, front-back direction. That is, the direction in which the opening into which the USB plug is inserted in the USB socket 1 is oriented (direction A in FIG. 4) is called the upward direction. In addition, the longitudinal direction of the USB socket 1 (the longitudinal direction viewed from above, the CD direction in FIG. 4) is referred to as the left-right direction. Further, the lateral direction of the USB socket 1 (the lateral direction viewed from the above direction and the EF direction in FIG. 4) is referred to as the front-back direction. It should be noted that the above-mentioned directions are defined only for convenience of description, and the above-mentioned front-back direction is directed in the vertical direction in a normal use state.

Furthermore, the present embodiment includes an AC-DC converter that converts AC power input from an external AC power supply into DC power of a predetermined voltage and outputs the DC power to the USB plug via the USB socket 1. Since the AC-DC converter as described above can be realized by a known technique, detailed illustration and description thereof will be omitted. The circuit components constituting the AC-DC converter are the first printed wiring board 2 and the second printed wiring housed and held in the housing 3 so as to face the lower side of the first printed wiring board 2. The board 4 is mounted separately. The first printed wiring board 2 and the second printed wiring board 4 are electrically connected to each other via an appropriate conductive path 40 such as a conductive pin.

In addition, the housing 3 includes a body 5 and a cover 6 that connect the printed wiring boards 2 and 4 to each other so as to sandwich the printed wiring boards 2 and 4 in the thickness direction (vertical direction).

On each of the front and rear end surfaces of the body 5, two coupling protrusions 51 are arranged side by side so as to project outward in the front-rear direction. Further, at each of the front and rear ends of the cover 6, two coupling pieces 61 sandwiching the body 5 in the front and rear direction are provided so as to protrude downward. Each coupling piece 61 is provided with a coupling hole 610, which is a through hole penetrating in the front-rear direction, and the coupling convex portion 51 is engaged with each coupling hole 610, whereby the body 5 and the cover 6 are separated from each other. Join.

The housing 3 is fixed to a construction surface (not shown) such as a wall surface using the mounting frame 7 shown in FIGS. 8 and 9. The mounting frame 7 has a rectangular frame shape having a rectangular window hole 71. At both ends of the mounting frame 7 in the longitudinal direction of the window hole 71, there is a box hole 72 for inserting a box screw that is a rounded rectangular shape and is screwed into an embedded box embedded in the construction surface. They are provided individually. In addition, on both sides of the window hole 71 in the short-side direction that sandwich the box hole 72, sandwiching metal fittings for sandwiching the panel material with the mounting frame 7 when the construction surface is formed of the panel material (see FIG. A hooking hole 73 for hooking and locking (not shown) is provided through. Further, at four positions where one hooking hole 73 is sandwiched between the window hole 71 and a circular direct mounting hole 74 for inserting a direct mounting screw to be screwed into the construction surface, respectively. Has been done. Retaining pieces 75 are projected from both end edges of the window hole 71 in the lateral direction, and three pairs of mounting holes 76 are provided in each retaining piece 75 so as to be arranged along the longitudinal direction. Two pairs of mounting projections 31 are provided on the front and rear surfaces of the housing 3 so as to engage with the mounting holes 76, respectively. That is, the housing 3 is coupled to the mounting frame 7 by engaging the mounting projections 31 with the mounting holes 76.

The body 5 has a storage recess 50 that opens upward, and the second printed wiring board 4 is stored in the storage recess 50. Further, as shown in FIGS. 2, 3 and 10, two engaging recesses 52 that are released upward are provided at the upper ends of the inner surfaces of the storage recess 50 that face each other in the left and right directions. Two engaging projections 41 are arranged side by side on the left and right ends of the second printed wiring board 4 so as to project outward in the left-right direction. The second printed wiring board 4 is prevented from being displaced downward or in the front-rear direction by the engagement convex portions 41 contacting the inner surfaces of the engagement concave portions 52, respectively. In other words, the second printed wiring board 4 is supported by the body 5 at each engaging protrusion 41. Further, as shown in FIGS. 2, 3 and 11, two engaging protrusions 62, which are respectively inserted into the engaging recesses 52, are arranged at the left and right ends of the cover 6 so as to be juxtaposed in the front-rear direction and protrude downward. It is set up. The respective engaging protrusions 62 of the cover 6 sandwich the engaging protrusions 41 of the second printed wiring board 4 between the engaging protrusions 62 and the upward facing inner surface of the engaging recess 52.

Here, the distance W1 between the right engagement recesses 52 is smaller than the distance W2 between the left engagement recesses 52. Further, the distance between the right engagement convex portions 62 is made substantially equal to the distance W1 between the right engagement concave portions 52, and the distance between the left engagement convex portions 62 is equal to the distance W2 between the left engagement concave portions 52. Are almost equal. Therefore, at the time of assembling, temporarily, the operator may put the second printed wiring board 4 and the cover 6 around the axis parallel to the correct direction in the vertical direction (that is, the thickness direction of the second printed wiring board 4) by 180°. If it is attempted to be attached to the body 5 in the wrong rotated orientation, the engagement protrusions 41, 62 cannot be engaged with the engagement recess 52. This prevents the mounting in the wrong orientation as described above.

Further, two electric wire insertion holes 32 are provided on the lower surface of the body 5, and an electric wire (not shown) inserted from the electric wire insertion hole 32 is connected to the lower surface of the second printed wiring board 4. The terminal 8 is mounted. The terminal 8 is a so-called quick-connect terminal that has two locking springs (not shown) that lock the electric wire inserted through the electric wire insertion hole 32 in a one-to-one correspondence with the electric wire insertion hole 32. The terminal 8 also has a release button 81 that releases the lock by pressing each lock spring when pressed from below. The lower surface of the body 5 is provided with a release hole 33 (see FIG. 10) that exposes the release button 81 downward. For example, a jig (not shown) such as a flat-blade screwdriver should be inserted into the release hole 33. The release button 81 can be pressed with.

The body 5 also has a partition wall 54 that partitions the storage recess 50 into a terminal storage portion 501 in which the terminals 8 are stored and a circuit storage portion 502 in which other circuit components are stored. Each of the wire insertion hole 32 and the release hole 33 is opened on the bottom surface of the terminal housing 501.

Further, the left and right ends of the body 5 respectively support the first printed wiring board 2 (that is, contact the lower surface, which is the opposite surface of the first printed wiring board 2 on which the USB socket 1 is mounted). The support protrusion 53 is provided so as to project upward. At the upper end of each support convex portion 53, a support concave portion 530 opened in the left-right direction is provided. Further, leg portions 21 are respectively provided outwardly in the left-right direction on both sides of the first printed wiring board 2 sandwiching the USB socket 1 in the longitudinal direction (left-right direction) when viewed from above at the left-right end portions. In the first printed wiring board 2, the leg portions 21 are housed in the support recesses 530, respectively, so that displacement of the first printed wiring board 2 in the front-rear direction and in the downward direction is prevented. In other words, the first printed wiring board 2 is supported by the supporting protrusions 53 of the body 5 on the leg portions 21.

The upper end of the partition wall 54 is inserted into the insertion hole 42 provided in the second printed wiring board 4 and abuts on the central portion of the lower surface of the first printed wiring board 2 (that is, in the vicinity of the USB socket 1). A contact portion 55 is provided. That is, when the USB plug is connected to the USB socket 1, the contact portion 55 contacts the first printed wiring board 2 so that the central portion of the first printed wiring board 2 moves downward with respect to the leg portion 21. The bending (deformation) of the first printed wiring board 2 which is displaced to the right is suppressed.

According to the above configuration, the bending of the first printed wiring board 2 when the USB plug is connected can be suppressed as compared with the case where the contact portion 55 is not provided.

1 USB socket 2 1st printed wiring board 3 Housing 30 Plug insertion hole 55 Abutment part

Claims (6)

A first printed wiring board having a first main surface and a second main surface;
A USB socket and a first circuit component mounted on the first main surface of the first printed wiring board;
A second circuit component mounted on the second main surface of the first printed wiring board;
A second printed wiring board arranged on the second main surface side of the first printed wiring board and having a third main surface and a fourth main surface;
A third circuit component mounted on the third main surface of the second printed wiring board;
A fourth circuit component mounted on the fourth main surface of the second printed wiring board ,
The first printed wiring board is arranged on the third main surface side of the second printed wiring board,
The height of the first circuit component is much larger than the height of the second circuit component,
The height of the said 4th circuit component is larger than the height of the said 3rd circuit component, A USB outlet. The USB outlet according to claim 1, wherein a height of the first circuit component is larger than a distance between the first printed wiring board and the second printed wiring board. The USB outlet according to claim 1 or 2, further comprising a terminal mounted on the fourth main surface of the second printed wiring board and connected to an electric wire. The USB outlet according to any one of claims 1 to 3, further comprising a contact portion that contacts the second main surface of the first printed wiring board. The second printed wiring board has an insertion hole,
The USB outlet according to claim 4, wherein the contact portion is inserted into the insertion hole. Further comprising a housing for housing the first printed wiring board and the second printed wiring board,
The housing is
A cover having a plug insertion hole through which a USB plug connected to the USB socket is inserted;
A body coupled to the cover,
The USB outlet according to claim 1, wherein the body has a support protrusion that supports the first printed wiring board.

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