JP6089381B2 - 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 (see, for example, Patent Document 1).

  Some USB outlets of this type include a printed wiring board on which the USB socket is mounted, and a housing that has a plug insertion hole through which the USB plug is inserted and houses the printed wiring board. . The USB socket is mounted in such a direction that the insertion / extraction direction of the USB plug is the thickness direction of the printed wiring board.

JP 2011-82802 A

  In the above USB outlet, the printed wiring board may bend and deform when the USB socket receives a pressing force from the USB plug. When the plastic deformation (bending) of the printed wiring board proceeds through repeated insertion / removal of the USB plug, there is a possibility that problems such as occurrence of catching will occur at the time of insertion / removal of the USB plug.

The present invention has been made in view of the above-described reasons, and an object of the present invention is to provide a USB outlet that prevents a printed wiring board from being attached in an incorrect direction .

The USB outlet of the present invention includes a printed wiring board, a USB socket, and a housing that has a plug insertion hole into which a USB plug connected to the USB socket is inserted and stores the printed wiring board. The housing includes a body and a cover that are coupled to each other in the vertical direction, the body has a storage recess that opens upward and stores the printed wiring board, and the cover has the plug insertion hole, The printed wiring board is coupled with the body so as to sandwich the printed wiring board in the thickness direction of the printed wiring board between the body, and the storage recess has a pair of inner surfaces facing in one direction, Two engaging recesses opened upward are provided at the upper ends of the pair of inner surfaces, respectively, and at both ends in the one direction of the printed wiring board Each of the two engaging projections contacting the inner surface of the engaging recess protrudes outward in the one direction, and the two engagements on one inner surface of the pair of inner surfaces. The distance between the recesses is smaller than the distance between the two engagement recesses on the inner surface on the other side.

According to the present invention, it is possible to prevent the printed wiring board from being attached in the wrong direction .

It is sectional drawing which shows embodiment of this invention. (A) and (b) are the partially broken perspective views which respectively show the same as above, (a) and (b) show the state which fractured | ruptured in each different position and was seen from the mutually opposite direction. (A) (b) is the partially broken disassembled perspective view which respectively shows the same, (a) (b) shows the state which fractured | ruptured in each different position and was seen from the mutually opposite direction. It is a disassembled perspective view which shows the state with which the 2nd printed wiring board was assembled | attached to the body in the same as the above. It is a disassembled perspective view which shows the same as the 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 a disassembled perspective view which shows the same as the above and an attachment frame. It is a top view which shows a body same as the above. It is a bottom view which shows a cover same as the above.

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

  In this embodiment, as shown in FIGS. 1 to 9, a printed wiring board (hereinafter referred to as “first printed wiring board”) 2 on which the USB socket 1 is mounted and a USB connected to the USB socket 1. A housing 3 having a plug insertion hole 30 through which a plug (not shown) is inserted and housing the printed wiring board 2 is provided. The USB socket 1 is mounted on the first printed wiring board 2 with the direction in which the USB plug is inserted and removed oriented in 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 / rear direction. That is, the direction (direction A in FIG. 4) in which the opening into which the USB plug is inserted is directed in the USB socket 1 is referred to as an upward direction. In addition, the longitudinal direction of the USB socket 1 (the longitudinal direction as viewed from above and the CD direction in FIG. 4) is referred to as the left-right direction. Furthermore, the short direction of the USB socket 1 (the short direction as viewed from above, the EF direction in FIG. 4) is referred to as the front-rear direction. Note that the above directions are defined for convenience of explanation only, and in the normal use state, the above-described front-rear direction is directed to the up-down direction.

  Furthermore, the present embodiment includes an AC-DC converter that converts AC power input from an external AC power source into DC power having 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 well-known technique, detailed illustration and description are omitted. The circuit components constituting the AC-DC converter include 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.

  The housing 3 includes a body 5 and a cover 6 that are coupled to each other in such a manner that the printed wiring boards 2 and 4 are sandwiched in the thickness direction (vertical direction).

  On each of the front and rear end faces of the body 5, two coupling projections 51 are provided so as to protrude outward in the front-rear direction, side by side. In addition, two connecting pieces 61 that sandwich the body 5 in the front-rear direction are provided on the front and rear ends of the cover 6 so as to protrude downward. Each coupling piece 61 is provided with a coupling hole 610 that is a through-hole penetrating in the front-rear direction, and the coupling projection 51 is engaged with each coupling hole 610 so that the body 5 and the cover 6 are mutually connected. 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. 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 are one box hole 72 for inserting a box screw to be screwed into an embedding box having a rounded rectangular shape and embedded in the construction surface. It is provided one by one. Further, on both sides sandwiching the box hole 72 in the short direction of the window hole 71, a clamp for sandwiching the panel material with the mounting frame 7 when the construction surface is formed of the panel material (see FIG. A catching hole 73 for catching and locking the notch is provided. Furthermore, circular direct attachment holes 74 for inserting direct attachment screws that are respectively screwed into the construction surface are provided at four positions sandwiching one hooking hole 73 with the window hole 71. Has been. Holding pieces 75 project from the both end edges in the short direction of the window hole 71, and three pairs of attachment holes 76 are provided in each holding piece 75 so as to be arranged in the longitudinal direction. Two pairs of mounting projections 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 each mounting projection 31 with the mounting hole 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 facing the left and right sides of the storage recess 50. Two engaging projections 41 are provided on the left and right end portions of the second printed wiring board 4 so as to protrude outward in the left-right direction, arranged in the front-rear 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 being in contact with the inner surfaces of the engagement concave portions 52. In other words, the second printed wiring board 4 is supported by the body 5 at each engagement convex portion 41. As shown in FIGS. 2, 3, and 11, two engagement projections 62 inserted into the engagement recesses 52 are arranged at the left and right ends of the cover 6, and are projected downward in the front-rear direction. It is installed. Each engagement convex portion 62 of the cover 6 sandwiches the engagement convex portion 41 of the second printed wiring board 4 between the upward facing inner surface of the engagement concave portion 52.

  Here, the distance W <b> 1 between the right engagement recesses 52 is set to be smaller than the distance W <b> 2 between the left engagement recesses 52. The distance between the right engaging projections 62 is substantially equal to the distance W1 between the right engaging recesses 52, and the distance between the left engaging projections 62 is equal to the distance W2 between the left engaging recesses 52. It is almost equal. Therefore, at the time of assembly, an operator temporarily puts the second printed wiring board 4 and the cover 6 180 degrees around an axis parallel to the vertical direction (that is, the thickness direction of the second printed wiring board 4) with respect to the correct orientation. When it is going to attach to the body 5 in the rotated wrong direction, the engaging convex parts 41 and 62 cannot be engaged with the engaging concave part 52. Thereby, the attachment in the above incorrect directions is prevented.

  Furthermore, two electric wire insertion holes 32 are provided on the lower surface of the body 5, and electric wires (not shown) inserted from the electric wire insertion holes 32 are connected to the lower surface of the second printed wiring board 4. Terminal 8 is mounted. The terminal 8 is a so-called quick connection terminal having two locking springs (not shown) that lock the electric wires inserted from the electric wire insertion holes 32 in one-to-one correspondence with the electric wire insertion holes 32. The terminal 8 has a release button 81 for releasing 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 minus driver is inserted into the release hole 33. With this, the release button 81 can be pressed.

  The body 5 also has a partition wall 54 that partitions 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 electric wire insertion hole 32 and the release hole 33 are opened on the bottom surface of the terminal storage portion 501.

  Furthermore, the left and right ends of the body 5 support the first printed wiring board 2 (that is, abut the lower surface of the first printed wiring board 2 opposite to the surface on which the USB socket 1 is mounted). The support convex part 53 is projected upward. At the upper end of each support projection 53, a support recess 530 that is released in the left-right direction is provided. Further, leg portions 21 project 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) as viewed from above. The first printed wiring board 2 is prevented from being displaced in the front-rear direction or in the downward direction by accommodating the leg portions 21 in the support recesses 530, respectively. In other words, the first printed wiring board 2 is supported by the support convex portion 53 of the body 5 at the leg portion 21.

  Further, the upper end of the partition wall 54 is inserted into an 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 contact portion 55 contacts the first printed wiring board 2, so that the center portion of the first printed wiring board 2 is lowered with respect to the leg portion 21. The bending (deformation) of the first printed wiring board 2 that is displaced in the direction 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.

  As described above, the USB outlet according to the first aspect includes the printed wiring board 4 and the housing 3 that houses the printed wiring board 4. The housing 3 includes a body 5 and a cover 6 that are coupled to each other in the vertical direction. The body 5 has an accommodation recess 50 that opens upward and accommodates the printed wiring board 4. The cover 6 is coupled to the body 5 such that the printed wiring board 4 is sandwiched between the cover 6 and the body 5 in the thickness direction of the printed wiring board 4. The storage recess 50 has a pair of inner surfaces facing in one direction. Two engaging recesses 52 opened upward are provided at the upper ends of the pair of inner surfaces in the storage recess 50. At both ends of the printed wiring board 4 in one direction, two engaging convex portions 41 that contact the inner surface of the engaging concave portion 52 are provided so as to protrude outward in one direction. The distance W1 between the two engaging recesses 52 on the inner surface on one side of the pair of inner surfaces is smaller than the distance W2 between the two engaging recesses 52 on the inner surface on the other side.

  In the USB outlet according to the second aspect, in the first aspect, two first engaging convex portions 62 inserted into the engaging concave portions 52 are respectively provided downward at both ends of the cover 6 in one direction. Projected. The second engagement protrusions 41 that are the engagement protrusions 41 of the printed wiring board 4 are respectively sandwiched between the first engagement protrusions 62 and the inner surfaces of the engagement recesses 52.

1 USB socket 2 First printed wiring board 3 Housing 30 Plug insertion hole 55 Abutting portion

Claims (2)

A printed wiring board, a USB socket, and a housing that has a plug insertion hole into which a USB plug connected to the USB socket is inserted and houses the printed wiring board.
The housing includes a body and a cover that are coupled to each other in the vertical direction, the body has a storage recess that opens upward and stores the printed wiring board, and the cover has the plug insertion hole. The printed wiring board is coupled to the body in a form sandwiched in the thickness direction of the printed wiring board between the body and the body,
The storage recess has a pair of inner surfaces facing in one direction,
Two engaging recesses opened upward are respectively provided at the upper ends of the pair of inner surfaces in the storage recess,
Two engaging convex portions that contact the inner surface of the engaging concave portion are projected outwardly in the one direction at both ends in the one direction of the printed wiring board,
The USB outlet characterized in that the distance between the two engaging recesses on the inner surface on one side of the pair of inner surfaces is smaller than the distance between the two engaging recesses on the inner surface on the other side. Two first engaging protrusions that are inserted into the engaging recesses protrude downward from both ends of the one direction of the cover,
The second engaging convex portion, which is the engaging convex portion of the printed wiring board, is sandwiched between the first engaging convex portion and the inner surface of the engaging concave portion, respectively. Item 1. A USB outlet according to item 1.

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