JP6811413B2 - 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 above-mentioned USB socket is mounted, and a housing having a plug insertion hole through which the above-mentioned USB plug is inserted and accommodating the above-mentioned 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.

Japanese Unexamined Patent Publication No. 2011-82802

In the above USB outlet, 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 removal of the USB plug, problems such as catching when the USB plug is inserted and removed may eventually occur.

The present invention has been made in view of the above reasons, and an object of the present invention is to provide a USB outlet in which the printed wiring board is less likely to be misaligned.

The USB outlet of the present invention is arranged on the opposite side of the first printed wiring board on which the USB socket is mounted and the surface of the first printed wiring board on which the USB socket is mounted, and is projected in one direction. The second printed wiring board is provided with a second printed wiring board provided with an engaging convex portion at the end in one direction, and a housing for accommodating the first printed wiring board and the second printed wiring board. Is arranged so that the thickness direction of the second printed wiring board is along the thickness direction of the first printed wiring board, and the housing has a plug insertion hole through which a USB plug connected to the USB socket is inserted. a cover having the having a body having a storage recess which opens in the direction opposite to the USB plug and the insertion direction for insertion into the USB socket, the engaging recess is provided in the housing recess, the engaging recess Is open in a direction opposite to the insertion direction, and the engaging convex portion abuts on the inner surface of the engaging concave portion.

According to the present invention, misalignment of the printed wiring board is unlikely to occur.

It is sectional drawing which shows the embodiment of this invention. (A) and (b) are partially broken perspective views showing the same as above, and (a) and (b) show states where they are broken at different positions and viewed from opposite directions. (A) and (b) are partially broken exploded perspective views showing the same as above, and (a) and (b) show states where they are broken at different positions and viewed from opposite directions. It is an exploded perspective view which shows the state which the 2nd printed wiring board is attached to the body in the same above. It is an exploded perspective view which shows the same as above. It is a perspective view which shows the same as above. It is an exploded perspective view which shows the same as above and is partially broken. It is a perspective view which shows the state which the mounting frame is attached to the same. It is an exploded perspective view which shows the same as above and a mounting frame. It is a top view which shows the same body. It is the bottom view which shows the cover of the same as above.

Hereinafter, the best mode for carrying out the present invention will be described 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 accommodating a 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 is 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 / rear directions, respectively. That is, the direction in which the opening in which the USB plug is inserted in the USB socket 1 is directed (A direction in FIG. 4) is referred to as an upward direction. Further, the longitudinal direction of the USB socket 1 (the longitudinal direction seen from above and the CD direction in FIG. 4) is referred to as a left-right direction. Further, the lateral direction of the USB socket 1 (the lateral direction seen from above and the EF direction in FIG. 4) is referred to as a front-rear direction. It should be noted that the above-mentioned direction is defined only for convenience of explanation, and the above-mentioned front-back direction is directed to the up-down direction under normal use conditions.

Further, 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 AC 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 will be omitted. The circuit components constituting the AC-DC converter are housed and held in the housing 3 so as to face the first printed wiring board 2 and the lower side of the first printed wiring board 2. It is mounted separately from the plate 4. 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.

Further, the housing 3 includes a body 5 and a cover 6 which are connected to each other by sandwiching the printed wiring boards 2 and 4 in the thickness direction (vertical direction).

Two coupling convex portions 51 are arranged side by side on both front and rear end surfaces of the body 5 so as to project outward in the front-rear direction. Further, two connecting pieces 61 sandwiching the body 5 in the front-rear direction are projected downward at both front and rear ends of the cover 6. 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 protrusion 51 is engaged with each coupling hole 610 so that the body 5 and the cover 6 can be connected to each other. Join.

The housing 3 is fixed to a construction surface (not shown) such as a wall surface by 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 one box hole 72 for inserting a box screw that has a rectangular shape with rounded corners and is screwed into an embedded box embedded in the construction surface. It is provided one by one. Further, on both sides of the box hole 72 in the lateral direction of the window hole 71, sandwich fittings for sandwiching the panel material with the mounting frame 7 when the construction surface is formed of the panel material (FIG. FIG. A hook hole 73 for hooking and locking (not shown) is provided. Further, circular direct mounting holes 74 for inserting direct mounting screws to be screwed into the construction surface are pierced at four locations where one hook hole 73 is sandwiched between the window hole 71 and the window hole 71. Has been done. Holding pieces 75 are projected from both ends of the window hole 71 in the lateral direction, and three pairs of mounting holes 76 are provided in each holding piece 75 so as to be arranged along the longitudinal direction. Two pairs of mounting protrusions 31 that engage in the mounting holes 76 are provided on both the front and rear surfaces of the housing 3. That is, the housing 3 is coupled to the mounting frame 7 by engaging each mounting convex portion 31 into the mounting hole 76.

Further, the body 5 has a storage recess 50 opened 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 opened upward are provided at the upper ends of the inner surfaces of the storage recesses 50 facing each other on the left and right sides. At the left and right ends of the second printed wiring board 4, two engaging convex portions 41 are arranged one by one in the front-rear direction and are projected 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 having each engaging convex portion 41 abut on the inner surface of the engaging concave portion 52. In other words, the second printed wiring board 4 is supported by the body 5 at each engaging convex portion 41. Further, as shown in FIGS. 2, 3 and 11, two engaging protrusions 62 inserted into the engaging recesses 52 are arranged in front and back and protrude downward at both left and right ends of the cover 6. It is installed. Each engaging convex portion 62 of the cover 6 sandwiches the engaging convex portion 41 of the second printed wiring board 4 between the engaging concave portion 52 and the upward inner surface of the engaging concave portion 52.

Here, the distance W1 between the engaging recesses 52 on the right side is smaller than the distance W2 between the engaging recesses 52 on the left side. Further, the distance between the engaging protrusions 62 on the right side is substantially equal to the distance W1 between the engaging recesses 52 on the right side, and the distance between the engaging protrusions 62 on the left side is the distance W2 between the engaging recesses 52 on the left side. It is almost equal. Therefore, at the time of assembly, the operator temporarily holds the second printed wiring board 4 and the cover 6 180 ° 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 trying to attach to the body 5 in the wrong direction of rotation, the engaging protrusions 41 and 62 cannot be engaged with the engaging recess 52. This prevents 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. Terminal 8 is mounted. The terminal 8 is a so-called quick-connect terminal having two locking springs (not shown) for locking the electric wire inserted from the electric wire insertion hole 32 in a one-to-one correspondence with the electric wire insertion hole 32. Further, the terminal 8 has a release button 81 that releases the lock by pressing each lock spring when pressed from below. A release hole 33 (see FIG. 10) for exposing the release button 81 downward is provided on the lower surface of the body 5, and a jig (not shown) such as a flat-blade screwdriver is inserted into the release hole 33. The release button 81 can be pressed and operated with.

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

Further, the first printed wiring board 2 is supported on each of the left and right ends of the body 5 (that is, the first printed wiring board 2 abuts on the lower surface opposite to the surface on which the USB socket 1 is mounted). The support convex portion 53 is projected 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 projected outward in the left-right direction on both left and right ends of the first printed wiring board 2 sandwiching the USB socket 1 in the longitudinal direction (left-right direction) when viewed from above. In the first printed wiring board 2, each leg 21 is housed in the support recess 530, so that the position shift in the front-rear direction or the downward direction is prevented. 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 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 comes into contact with the first printed wiring board 2, so that the central portion of the first printed wiring board 2 is lowered with respect to the leg portion 21. Bending (deformation) of the first printed wiring board 2 that displaces the first printed wiring board 2 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 Contact part

Claims (8)

The first printed wiring board on which the USB socket is mounted,
A second printed wiring board that is arranged on the side of the first printed wiring board opposite to the surface on which the USB socket is mounted, and has an engaging convex portion projecting in one direction provided at the end in the one direction. When,
A housing for accommodating the first printed wiring board and the second printed wiring board is provided.
The second printed wiring board is arranged so that the thickness direction of the second printed wiring board is along the thickness direction of the first printed wiring board.
The housing is
A cover having a plug insertion hole through which the USB plug connected to the USB socket is inserted,
It has a body having a storage recess that opens in a direction opposite to the insertion direction into which the USB plug is inserted into the USB socket.
The storage recess is provided with an engaging recess.
The engaging recess is open in a direction opposite to the insertion direction.
The engaging convex portion is a USB outlet that abuts on the inner surface of the engaging concave portion. Terminals and circuit components connected to electric wires are mounted on the second printed wiring board.
The USB outlet according to claim 1, wherein the storage recess is partitioned by a partition wall into a terminal storage portion in which the terminal is stored and a circuit storage portion in which the circuit component is stored. The first printed wiring board is arranged in the cover.
The USB outlet according to claim 1 or 2, wherein the second printed wiring board is arranged in the body. The body has a support protrusion that projects in a direction opposite to the insertion direction.
The USB outlet according to any one of claims 1 to 3, wherein the support convex portion can support the first printed wiring board. Two of the support convex portions are provided,
The USB outlet according to claim 4, wherein each of the two support convex portions is projected from both ends in a direction orthogonal to the insertion direction of the body. Two of the support convex portions are provided,
The body has two walls facing in a direction orthogonal to the insertion direction.
The USB outlet according to claim 4, wherein each of the two support convex portions is projected from an end surface on the cover side of each of the two walls. On the second printed wiring board,
A first circuit component mounted on a first main surface of the second printed wiring board on the side of the first printed wiring board.
A second circuit component mounted on a second main surface of the second printed wiring board opposite to the first printed wiring board is mounted.
The USB outlet according to any one of claims 1 to 6, wherein the height of the second circuit component is larger than the height of the first circuit component. The USB outlet according to claim 7, wherein the height of the second circuit component is larger than the distance between the first printed wiring board and the second printed wiring board.

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