JP2023071650A - Usb receptacle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a USB receptacle in which a positional deviation of a printed wiring board is suppressed.

SOLUTION: A USB receptacle comprises: a first printed wiring board 2 which has a first surface on which a USB socket 1 is mounted and a second surface being an opposite surface to the first surface; and a housing 3 which stores the first printed wiring board 2. A body 5 of the housing 3 has at least a pair of coupling protrusions which is provided on both ends in one direction and provided so as to protrude outwardly. A cover 6 of the housing 3 has at least a pair of coupling pieces 61 which is provided on both ends in the one direction and sandwiches the body 5 in the one direction. One of the pair of coupling pieces 61 has a coupling hole to which one of the pair of coupling protrusions is inserted. The other of the pair of coupling pieces 61 has a coupling hole to which the other of the pair of coupling protrusions is inserted. The body 5 comprises a pair of inner wall surfaces opposed in the other direction orthogonal to the one direction, and a pair of supporting protrusions provided so as to protrude upward from the pair of inner wall surfaces. The pair of supporting protrusions supports the second surface of the first printed wiring board 2.

SELECTED DRAWING: Figure 1

COPYRIGHT: (C)2023,JPO&INPIT

Description

The present invention relates to USB outlets.

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

This type of USB outlet includes a printed wiring board on which the USB socket is mounted, and a housing having a plug insertion hole through which the USB plug is inserted and housing the printed wiring board. . The USB socket is mounted in such a direction that the insertion/extraction direction of the USB plug coincides with the thickness direction of the printed wiring board.

Japanese Unexamined Patent Application Publication No. 2011-82802

In the above USB outlet, there is a possibility that the printed wiring board may be bent and deformed when the USB socket receives a pressing force from the USB plug. If the plastic deformation (bending) of the printed wiring board progresses through repeated insertion and extraction of the USB plug, there is a possibility that problems such as the USB plug being caught during insertion and extraction will eventually occur.

SUMMARY OF THE INVENTION An object of the present invention is to provide a USB receptacle capable of suppressing displacement of a printed wiring board.

A USB outlet of the present invention is a USB outlet fixed to a construction surface, the first printed wiring board having a first surface on which a USB socket is mounted and a second surface opposite to the first surface; a housing that has a plug insertion hole through which a USB plug connected to the USB socket is inserted, and stores the first printed wiring board; and a contact portion that contacts the second surface of the first printed wiring board. , wherein the housing has a cover and a body, the body has at least one pair of coupling protrusions provided at both ends in one direction and protruding outward, the cover comprising: At least a pair of coupling pieces provided at both ends in the one direction and sandwiching the body in the one direction, one of the pair of coupling pieces being a coupling hole into which one of the pair of coupling projections engages The other of the pair of coupling pieces has a coupling hole into which the other of the pair of coupling projections engages, and the body has a pair of inner wall surfaces facing in the other direction perpendicular to the one direction. and a pair of supporting protrusions projecting upward from the pair of inner wall surfaces, wherein the pair of supporting protrusions support the second surface of the first printed wiring board. and

According to the present invention, misalignment of the printed wiring board can be suppressed.

It is a sectional view showing an embodiment of the present invention. (a) and (b) are respectively partially broken perspective views showing the same as above, and (a) and (b) are broken at different positions and show states viewed from mutually opposite directions. (a) and (b) are respectively partially broken exploded perspective views showing the same as above, and (a) and (b) are broken at different positions and show states viewed from mutually opposite directions. FIG. 4 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 same as the above. It is a perspective view which shows the same as the above. Fig. 3 is a partially cutaway exploded perspective view showing the same; It is a perspective view which shows the state to which the mounting frame was attached same as the above. It is an exploded perspective view showing same as the above and an attachment frame. FIG. 4 is a plan view showing the body of the same; It is a bottom view which shows a cover same as the above.

BEST MODE FOR CARRYING OUT THE INVENTION The best mode for carrying out the present invention will be described below with reference to the drawings.

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

Hereinafter, the ABCDEF directions in FIG. 4 are referred to as up, down, left, right, front and back directions, respectively. That is, the direction in which the opening into which the USB plug is inserted in the USB socket 1 is directed (direction A in FIG. 4) is called the upward direction. Also, the longitudinal direction of the USB socket 1 (the longitudinal direction viewed from above, the CD direction in FIG. 4) is called the left-right direction. Furthermore, the lateral direction of the USB socket 1 (the lateral direction seen from above, the EF direction in FIG. 4) is referred to as the front-rear direction. It should be noted that the above directions are defined for the convenience of explanation only, and the front and back directions are directed to the up and down directions in normal use.

Furthermore, this embodiment includes an AC-DC converter that converts AC power input from an external AC power source into DC power of a predetermined voltage and outputs the DC power through the USB socket 1 to the USB plug. Since the AC-DC converter as described above can be realized by a well-known technique, detailed illustration and description are 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. It is mounted separately from the board 4. The first printed wiring board 2 and the second printed wiring board 4 are electrically connected to each other through appropriate conductive paths 40 such as conductive pins.

Further, the housing 3 includes a body 5 and a cover 6 which couple the printed wiring boards 2 and 4 in the thickness direction (vertical direction) so as to sandwich the printed wiring boards 2 and 4 .

On each of the front and rear end surfaces of the body 5, two coupling protrusions 51 are arranged in the left-right direction and protrude outward in the front-rear direction. In addition, two connecting pieces 61 each sandwiching the body 5 in the front-rear direction are projected downward from each of the front and rear end portions of the cover 6 . Each connecting piece 61 is provided with a connecting hole 610 which is a through hole penetrating in the front-rear direction. Join.

The housing 3 is fixed to a construction surface (not shown) such as a wall surface using a mounting frame 7 shown in FIGS. The mounting frame 7 has a rectangular frame shape with a rectangular window hole 71 . At both ends of the mounting frame 7 in the longitudinal direction of the window hole 71, there is one box hole 72 for inserting a box screw which is in the shape of a rounded rectangle and is screwed into an embedded box embedded in the construction surface. are provided individually. On both sides of the box hole 72 in the lateral direction of the window hole 71, clamping metal fittings (Fig. not shown) is provided through it. Furthermore, circular direct-mounting holes 74 for inserting direct-mounting screws to be screwed into the construction surface are provided at four locations between the window holes 71 and the hooking holes 73, one at a time. It is Holding pieces 75 project from both edges of the window hole 71 in the short direction, and each holding piece 75 is provided with three pairs of mounting holes 76 arranged along the longitudinal direction. Two pairs of mounting protrusions 31 that engage with the mounting holes 76 are provided on both front and rear surfaces of the housing 3 . That is, the housing 3 is coupled to the mounting frame 7 by engaging the mounting protrusions 31 with the mounting holes 76 respectively.

Further, 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 . Furthermore, as shown in FIGS. 2, 3, and 10, two engaging recesses 52 are provided at the upper ends of the inner surfaces of the storage recesses 50 that face each other in the left and right directions. At both left and right ends of the second printed wiring board 4, two engaging protrusions 41 are arranged in the front-rear direction and protrude outward in the left-right direction. The second printed wiring board 4 is prevented from being displaced in the downward direction or in the front-rear direction by the engagement projections 41 coming into contact with the inner surfaces of the engagement recesses 52 . In other words, the second printed wiring board 4 is supported by the body 5 at each engaging protrusion 41 . As shown in FIGS. 2, 3 and 11, on both left and right ends of the cover 6, two engaging projections 62 to be inserted into the engaging recesses 52 are aligned in the front-rear direction and protrude downward. is set. Each engagement protrusion 62 of the cover 6 sandwiches the engagement protrusion 41 of the second printed wiring board 4 between the upward inner surface of the engagement recess 52 .

Here, the distance W1 between the engaging recesses 52 on the right side is made smaller than the distance W2 between the engaging recesses 52 on the left side. The distance between the right engagement projections 62 is approximately equal to the distance W1 between the right engagement recesses 52, and the distance between the left engagement projections 62 is substantially equal to the distance W2 between the left engagement recesses 52. are approximately equal. Therefore, during assembly, if an operator moves the second printed wiring board 4 or the cover 6 to the correct orientation, it is rotated 180 degrees around an axis parallel to the vertical direction (that is, the thickness direction of the second printed wiring board 4). If it is attempted to be attached to the body 5 by rotating in the wrong direction, the engagement protrusions 41 and 62 cannot be engaged with the engagement recess 52 . This prevents mounting in the wrong orientation as described above.

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

Further, the body 5 has a partition wall 54 that divides the storage recess 50 into a terminal storage portion 501 that stores the terminals 8 and a circuit storage portion 502 that stores other circuit components. Each wire insertion hole 32 and each release hole 33 are opened in the bottom surface of the terminal housing portion 501 .

Furthermore, the left and right ends of the body 5 respectively support the first printed wiring board 2 (that is, contact the lower surface of the first printed wiring board 2 opposite to the surface on which the USB socket 1 is mounted). A support protrusion 53 is provided to protrude upward. A support recess 530 opened in the left-right direction is provided at the upper end of each support protrusion 53 . Further, leg portions 21 project outward in the left-right direction from both left and right ends of the first printed wiring board 2 on both sides sandwiching the USB socket 1 in the longitudinal direction (left-right direction) when viewed from above. The leg portions 21 of the first printed wiring board 2 are accommodated in the support recesses 530, respectively, so that the first printed wiring board 2 is prevented from being displaced in the front-rear direction and downward. In other words, the first printed wiring board 2 is supported by the support projections 53 of the body 5 at the legs 21 .

At the upper end of the partition wall 54, there is a contact that is inserted through the insertion hole 42 provided in the second printed wiring board 4 and abuts against the central portion of the lower surface of the first printed wiring board 2 (that is, near the USB socket 1). A contact portion 55 is provided. That is, when the USB plug is connected to the USB socket 1 , the abutting portion 55 abuts on the first printed wiring board 2 , so that the central portion of the first printed wiring board 2 is downwardly moved with respect to the legs 21 . Bending (deformation) of the first printed wiring board 2, which causes a displacement of the first printed wiring board 2, is suppressed.

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

Reference Signs List 1 USB socket 2 First printed wiring board 3 Housing 30 Plug insertion hole 55 Abutment

Claims (7)

A USB outlet fixed to a construction surface,
a first printed wiring board having a first surface on which a USB socket is mounted and a second surface opposite to the first surface;
a housing that has a plug insertion hole through which a USB plug connected to the USB socket is inserted and stores the first printed wiring board;
a contact portion that contacts the second surface of the first printed wiring board,
the housing has a cover and a body,
the body has at least a pair of coupling protrusions provided at both ends in one direction and projecting outward;
the cover has at least a pair of connecting pieces provided at both ends in the one direction and sandwiching the body in the one direction;
one of the pair of coupling pieces has a coupling hole into which one of the pair of coupling protrusions is engaged;
the other of the pair of coupling pieces has a coupling hole into which the other of the pair of coupling protrusions is engaged;
The body has a pair of inner wall surfaces facing in the other direction perpendicular to the one direction, and a pair of supporting projections projecting upward from the pair of inner wall surfaces,
The USB outlet, wherein the pair of supporting protrusions supports the second surface of the first printed wiring board. The cover is provided at both ends in the one direction, and has a plurality of mounting projections that are coupled to a mounting frame attached to the construction surface.
The USB outlet according to claim 1. The length of each of the pair of supporting protrusions in the one direction is greater than the length of the USB socket in the one direction,
The USB outlet according to claim 1 or 2. The contact portion is arranged between the pair of supporting protrusions in the other direction,
the length of the contact portion in the one direction is smaller than the length of each of the pair of supporting protrusions in the one direction;
A USB outlet according to any one of claims 1-3. Further comprising a second printed wiring board arranged on the second surface side of the first printed wiring board,
The first printed wiring board is housed in the cover,
The second printed wiring board is housed in the body,
A USB outlet according to any one of claims 1-4. a terminal mounted on the second printed wiring board;
A circuit component mounted on the second printed wiring board,
the body has a storage recess,
The housing recess has a terminal housing portion for housing the terminal and a circuit housing portion for housing the circuit component,
The body has a partition wall that partitions the terminal housing portion and the circuit housing portion,
The USB outlet according to claim 5. the depth of the terminal housing portion is smaller than the depth of the circuit housing portion;
The USB outlet according to claim 6.

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