TW201838272A - Table tap including a body, a connection portion, a conductive portion, a USB connector, a conversion circuit, a first substrate, and a second substrate - Google Patents

Abstract

The present invention provides a table tap, which aims to prevent a decrease in reliability due to foreign matter intruding into the body. The table tap (1) includes a body (10) having a first insertion port and a second insertion port (22), a connection portion, a conductive portion, a USB connector (7), a conversion circuit, a first substrate (11), and a second substrate (12). Through the connection portion, the conductive portion supplies AC power received from the external power source to the conductor inserted into the plug. The conversion circuit converts AC power into DC power and supplies the conductor of the USB plug through the USB connector (7). The USB connector (7) is mounted on the first substrate (11). An electronic component (15) constituting the conversion circuit is mounted on the second substrate (12). The first substrate (11) and the second substrate (12) are not overlapped with each other when viewed from one of the insertion directions of the USB plug; instead, the first substrate (11) and the second substrate (12) are arranged side by side along the direction along which the first insertion port and the second insertion port (22) are arranged side by side and are housed in the body (10).

Description

Table socket

The invention relates to a socket for a desk.

An example of the conventional technique is a table socket described in Document 1 (JP2015-233016A). In this conventional example, a plurality of blade receiving holes are provided on one surface of the socket body for connection to a power plug having a pair of blades. A plurality of blade bearing holes, a pair of 2 holes are arranged in a row at equal intervals in an indistinguishable manner, and the user can freely choose the insertion position of the power plug.

In addition, the socket for desks of this conventional example also includes a USB terminal composed of a female-side connector that can be connected to a USB (Universal Serial Bus) plug. An insertion opening for inserting a USB plug is provided on a different side (side surface) from one side of a socket body provided with a plurality of blade receiving holes.

In the conventional socket for a desk, the USB terminal is exposed through the insertion opening of the socket body when the USB plug is not inserted. For example, when a person is eating or drinking at a table socket placed on a table, if liquids such as beverages are spilled or dregs (solid matter) such as food are dropped, they may enter through the insertion opening. That is, the electronic components around the circuit for generating the DC power may be damaged due to the invasion of the foreign matter, causing a reduction in reliability.

In view of the foregoing, an object of the present invention is to provide a socket for a desk that can prevent the reliability from being lowered due to foreign matter intruding into the body.

According to one aspect of the present invention, a socket for a table includes a body having a first insertion port and a second insertion port, a connection portion, a conductive portion, a connector, a conversion circuit, a first substrate, and a second substrate. The connection portion is electrically connected to a conductor of a first plug inserted into the first insertion port. The conductive portion electrically connects an external power source to the connection portion, and supplies AC power received from the external power source to the conductor of the first plug. The connector is electrically connected to a conductor of a second plug inserted into the second insertion port. The conversion circuit converts the AC power into DC power, and supplies the conductor to the second plug through the connector. The connector is mounted on the first substrate. Electronic components constituting the conversion circuit are mounted on the second substrate. The first substrate and the second substrate do not overlap each other when viewed from one of the insertion directions in which the conductors of the second plug are inserted, but are side by side along the first insertion port and the second insertion port. Directions are stored side by side in this device.

(1) Overview The configuration described below is only an example of the present invention, and the present invention is not limited to the following configuration. Even if it is a configuration other than the following configuration, it can be designed according to the scope of the technical idea of the present invention. And make various changes.

The socket 1 for a table of this embodiment is provided with an elongated body 10 along one direction. As shown in FIG. 2, the desk socket 1 is provided with a 4-port slot that can be connected to a plug 101 (first plug) of a power cord of an appliance or the like. That is, the device body 10 includes four insertion openings 21 to which conductors (a pair of bolt blades 101A and a ground terminal 101B) of the plug 101 are inserted. The desk socket 1 includes connection portions (512, 522, 532) that are electrically connected to the conductors of the insertion plugs 101 inserted into the respective insertion ports 21. The power cord 6 drawn from the device body 10 is connected to, for example, a slot provided on a wall surface or the like, and can supply AC power from an external power source (for example, a commercial AC power source). That is, for example, even if an electric appliance is installed away from a slot provided on a wall surface, by inserting the plug 101 of the electric appliance into the insertion opening 21 of the desk socket 1, the appliance can still receive communication through the desk socket 1. electric power. The power cord 6 may not include a power plug connected to a slot provided on a wall surface or the like, but may include a harness plug connected to a junction box.

The body 10 further includes an insertion port 22 (see FIG. 7A). The desk socket 1 includes a conductive portion, a connector 7, a conversion circuit, a first substrate 11, and a second substrate 12. The conductive portion electrically connects the external power source with the connection portion (512, 522, 532), and supplies the conductor inserted into the plug 101 with the AC power received from the external power source. The "conductive portion" described here corresponds to, for example, the power supply line 6, the conductive portions 511, 521, and 531, and the fixing pieces 513, 523, and 533. The connector 7 is housed in the body 10, and is electrically connected to the conductor 1020 (see FIG. 13) of the plug 102 inserted into the insertion port 22, thereby supplying DC power to the conductor 1020. The conversion circuit converts AC power to DC power, and supplies the power to the conductor 1020 of the plug 102 through the connector 7.

In this embodiment, the “plug 102” inserted into the insertion port 22 is, for example, a USB (Universal Serial Bus) plug 102 (second plug) (see FIGS. 12 to 14). Therefore, the connector 7 is a USB connector 7 (jack) that can be inserted into the USB plug 102 and connected thereto. In short, the desk socket 1 includes, for example, a USB port (two as an example), and can supply DC power for charging a battery built in a portable terminal or the like. However, in addition to the USB connector connected to the USB plug 102, the connector 7 may also be a VGA connector connected to a VGA (Video Graphics Array) terminal, for example.

In the following description, in the socket 1 for desks, in order to distinguish the insertion port 21 from the insertion port 22, they are referred to as "first insertion port 21" and "second insertion port 22". In addition, in the following, to simplify the description, a component used to supply AC power through the first insertion port 21 in the desk socket 1 is referred to as a "first block 1A". In addition, in the desk socket 1, a component for supplying DC power through the second insertion port 22 is referred to as a “second block 1B”. The first block 1A, in the device body 10, corresponds to the part on the left side of the two-dot chain line A1 in FIG. 1 and FIG. The second block 1B is equivalent to the part on the right side of the two-point chain line A1.

In this embodiment, as shown in FIG. 4, the USB connector 7 is mounted on the first substrate 11, and the electronic components 15 constituting the conversion circuit are mounted on the second substrate 12. When the first substrate 11 and the second substrate 12 are viewed from one of the insertion directions of the conductor 1020 of the USB plug 102, they do not overlap each other, but are arranged side by side along the first insertion port 21 and the second insertion port 22. Directions are stored side by side in the container body 10.

In this configuration, the first substrate 11 and the second substrate 12 are housed in the container 10 side by side along the above-mentioned side-by-side direction. Therefore, assuming that a foreign object (such as a liquid such as a beverage) penetrates into the device body 10 from the second insertion port 22, it is still possible to prevent the foreign object from directly contacting the second substrate 12 on which various electronic components 15 are mounted. As a result, it is possible to prevent the reliability from being lowered due to the foreign matter intruding into the body 10.

(2) Details (2.1) Overall structure Hereinafter, the desk socket 1 according to this embodiment will be described in detail with reference to FIGS. 1 to 15. In the following, unless otherwise stated, the directions of up, down, left and right, and front and rear directions of the table socket 1 are described by using the up, down, left, right, and front arrows shown in FIG. 1. That is, as an example, the long-side direction of the body 10 of the table socket 1 is the left-right direction, and the short-side direction (width direction) of the body 10 is the front-rear direction. The insertion direction of the conductor 1020 of the USB plug 102 is downward. However, these directions are not intended to limit the use direction of the desk socket 1. In addition, the arrows showing the directions in the drawings are labeled for illustration only, and do not have a substance. In the present embodiment, the description will be made assuming that the socket 1 for a table is placed on a horizontal surface such as a table, but it is not particularly limited to this embodiment.

The desk socket 1 is provided with an elongated body 10 along the left and right directions, as explained in the section of "(1) Overview". The container body 10 includes: a slightly rectangular box-shaped housing cover 2 which is elongated in the left-right direction and the bottom surface is open; and a slightly rectangular box-shaped housing body 3 which is elongated in the left-right direction and the top surface is open. The device body 10 includes four intermediate case covers 4A and an intermediate case body 4B. The casing cover 2 and the casing body 3 are mounted in such a manner that the mutually open faces face each other. The four middle case covers 4A and the middle case body 4B are housed by the case cover 2 and the case body 3.

The desk socket 1 is as described in the "(1) Summary" column, and the two-point chain line A1 in Figs. 1 and 2 is the boundary line, and is composed of the first block 1A and the second block 1B. The two-point chain line A1 is illustrated for convenience of explanation, and it does not have a physical imaginary line.

In the case cover 2, the part on the left side of the two-point chain line A1 becomes the first case cover 1A of the first block, and the part on the right side of the two-point chain line A1 becomes the second case of the second block 1B. Cover 2B. The first case cover 2A and the second case cover 2B are integrally formed. The "wall portion" of the body 10 corresponds to the top plate 20B described later; the "first wall portion" corresponds to the top plate 20A and the top plate 20B described later; the "second wall portion" of the body 10 corresponds to the bottom plates 30A and 30B, and The first wall portion faces each other.

In the case body 3, the part to the left of the two-point chain line A1 becomes the first case body 3A of the first block 1A, and the part to the right of the two-point chain line A1 becomes the second case of the second block 1B. Body 3B. The first case body 3A and the second case body 3B are integrally formed. In the following, the first block 1A will be explained first, and then the second block 1B will be explained.

(2.2) Block 1 (2.2.1) The overall structure of Block 1 Block 1A, with a 4-port slot, can be plugged into the plug 101 of an electrical appliance, and can be supplied from an external power source (such as commercial AC power). Specifically, the first block 1A includes a first case cover 2A, a first case body 3A, four intermediate case covers 4A, an intermediate case body 4B, a terminal block 5, a power cord 6, and two suction portions 9 (9A, 9B).

(2.2.2) First case cover The first case cover 2A is made of a thermoplastic resin such as ABS resin. As shown in FIG. 1, the first case cover 2A is formed in a flat box shape with a bottom surface and a right surface formed by a top plate 20A, a pair of first side plates 21A and 21A, and a second side plate 22A. The right end of the top plate 20A and the pair of first side plates 21A are connected to the second case cover 2B of the second block 1B.

The top plate 20A has a rectangular plate shape that is long in the left-right direction when viewed from one of the up-down direction. The top plate 20A is provided with four through holes 201 (see FIG. 1) penetrating through the thickness direction (up and down direction). The four through holes 201 are provided at regular intervals in the left-right direction. When viewed from one of the up and down directions, each of the through holes 201 has a rectangular shape.

The top plate 20A includes a pair of hub portions 202 and one hub portion 203 protruding downward from the bottom surface (refer to FIGS. 3 and 6). Each hub is cylindrical and has screw holes. A pair of hub portions 202 are provided near the front and rear ends in the vicinity of the left end of the bottom surface of the top plate 20A, respectively. The hub portion 203 is provided at a substantially center in the front-rear direction between the third through hole 201 and the fourth through hole 201 from the left. These three hubs are in one-to-one correspondence with the three hubs described later after the first housing body 3A.

In addition, the top plate 20A is provided on its bottom surface with a pair of hooking portions 204 protruding downward from four groups (that is, a total of eight pieces). As shown in FIG. 6, each group of hooking portions 204 is provided at the leading edge and the trailing edge of the corresponding through hole 201 among the four through holes 201. When viewed from one of the front-rear direction, each of the hook portions 204 is formed in a rectangular plate shape. The hook portion 204 is provided at its front end with a claw 204A protruding in a direction approaching the pair of hook portions 204.

In addition, as shown in FIGS. 3 and 6, the top plate 20A is provided with a pair of positioning walls 205 protruding downward from four groups (that is, a total of eight pieces) on the bottom surface thereof. The positioning walls 205 of each group are respectively disposed on the left edge and the right edge of the corresponding through hole 201. Each positioning wall 205 is formed in a substantially rectangular plate shape when viewed from one of the left and right directions. The front and rear ends of each positioning wall 205 are integrally formed with the inner surfaces of the first side plates 21A and 21A facing each other.

Further, the top plate 20A includes a first receiving portion 206 near the left end of the bottom surface, and receives the power cord 6 together with the second receiving portion 308 described later after the first casing 3A. The first receiving portion 206 includes a pair of walls 206A protruding downward. The pair of walls 206A face each other in the left-right direction. When viewed from one of the left and right directions, each wall 206A has a semicircular groove 206B (see FIG. 3) recessed in a semicircular shape upward at the lower end.

A pair of first side plates 21A protrude downward from both ends in the front-rear direction of the top plate 20A. When viewed from one of the front-rear direction, each of the first side plates 21A is formed in an elongated rectangular plate shape. The second side plate 22A protrudes downward from the left end of the top plate 20A. When viewed from one of the left and right directions, the second side plate 22A is formed into a substantially rectangular plate shape as a whole, and has a first semicircular groove 220 that is recessed semicircularly upward (see FIG. 3). The first semicircular groove 220 forms a through hole with the second semicircular groove 320 described later after the first housing body 3A when the first housing cover 2A is attached to the first housing body 3A.

(2.2.3) First case body The first case body 3A is formed of a thermoplastic resin such as ABS resin, similarly to the first case cover 2A. As shown in FIGS. 3 and 5A, the first housing body 3A is formed into a flat box shape with its top and right sides opened by a bottom plate 30A, a pair of first side plates 31A and 31A, and a second side plate 32A. Both the bottom end of the bottom plate 30A and the pair of first side plates 31A are connected to the second casing 3B of the second block 1B.

When viewed from one of the vertical directions, the bottom plate 30A has a rectangular plate shape that is long in the horizontal direction. The bottom plate 30A is provided on its top surface with a pair of hub portions 303 and one hub portion 302 protruding upward (refer to FIG. 5A). Each hub portion has a cylindrical shape and has a through hole 304 penetrating in the vertical direction. The pair of hub portions 303 are provided near the left end of the top surface of the bottom plate 30A near the front and rear ends, respectively, and are configured to be in contact with the front ends of the pair of hub portions 202 of the first housing cover 2A, respectively. The hub portion 302 is configured to be in contact with the front end of the hub portion 203 of the first case cover 2A.

In addition, the bottom plate 30A is provided on its top surface with a positioning cylinder 305 (refer to FIG. 5A) protruding upward. The positioning cylinder 305 is formed in a cylindrical shape with an open upper end surface. The positioning cylinder 305 is aligned with the hub 303 in the left-right direction in the center of the bottom plate 30A in the front-rear direction.

The bottom plate 30A is provided on its top surface with a plurality of convex strips 306 (see FIG. 5A) for positioning the intermediate case 4B and the terminal block 5. In addition, the bottom plate 30A is provided on its top surface with two sets of a pair of locking portions 307 (that is, a total of four) for fixing the middle casing 4B. The plurality of convex strips 306 are rectangular plate-shaped and protrude upward. Each set of locking portions 307 is disposed to face each other in the front-rear direction. When viewed from one of the front-rear direction, each locking portion 307 is formed in a rectangular plate shape. Each of the locking portions 307 includes a claw 307A protruding from the front end in a direction approaching the pair of locking portions 307.

Further, the bottom plate 30A includes a second receiving portion 308 in the vicinity of the left end of the top surface thereof for receiving the power cord 6 together with the first receiving portion 206 of the first case cover 2A (see FIG. 5A). The second receiving portion 308 includes a pair of standing pieces 308A facing each other in the front-rear direction, and a connecting piece 308B connecting the pair of standing pieces 308A. The second receiving portion 308 further includes two protrusions 308C, and protrudes from each of the standing pieces 308A to the other standing piece 308A. In short, the second receiving portion 308 includes a total of four protrusions 308C.

When viewed from one of the front and rear directions, each of the upright pieces 308A has a rectangular plate shape and protrudes upward. When viewed from one of the left and right directions, the connecting piece 308B has a depression recessed in a semicircular shape at the upper end. The front end portion of the sheath 60 of the three electric wires 61 to 63 (refer to FIG. 4) bundled with the power cord 6 is placed in the depression in the device body 10. The four protrusions 308C are in contact with the front end portion of the sheath 60 and limit the displacement of the power cord 6 with respect to the front-back direction. The first receiving portion 206 of the first case cover 2A is stored in a storage space surrounded by the second side plate 32A, a pair of upright pieces 308A, and a connection piece 308B. The distal end portion of the sheath 60 is restricted from being displaced in the vertical direction by a wall 206A of the connecting piece 308B and one of the first receiving portions 206. In short, the first case cover 2A and the first case body 3A are configured to stably support the sheath 60 of the power cord 6 in the device body 10.

In addition, the bottom plate 30A is provided with two storage recesses 36 (36A, 36B) in the vicinity of both ends in the left-right direction of the bottom surface, for receiving the two suction portions 9A, 9B (see FIG. 3). Specifically, the suction portion 9A is stored in a storage recess 36A provided near the left end of the bottom surface of the bottom plate 30A; the suction portion 9B is stored in the storage recess 36B provided near the right end of the bottom surface of the bottom plate 30A. When viewed from one of the vertical directions, each of the storage recesses 36 is formed in a rectangular shape and is recessed upward.

In addition, in the bottom plate 30A, the surface of the area corresponding to each of the storage recesses 36 is formed on the top surface of the bottom plate 30A one step higher than the surrounding surface. In other words, the bottom plate 30A is provided on its top surface with two projection bases 37 (37A, 37B) that project rectangularly upward (refer to FIG. 5A). Each of the projections 37 and the first side plate 31A on the rear side face each other so as to form a gap therebetween. On the other hand, each projection 37 is formed integrally with the first side plate 31A on the front side without a gap.

The bottom plate 30A is provided with locking claws 360 (refer to FIG. 3) that protrude downward and further protrude inwardly in a position near the front of the inner bottom surface of each of the storage recesses 36. In addition, the bottom plate 30A is provided with a locking hole 361 (see FIG. 5A) penetrating to the rear end surface of the protruding base 37 on the inner side surface on the rear side of each storage recess 36.

Here, as shown in FIG. 5A, the bottom plate 30A of this embodiment is provided with a pair of drain outlets 18 (18A, 18A) and a pair of drain outlets 18 (18A, 18A, 18A) that connect the external space of the container 10 with the internal space of the container 18B, 18B). A pair of drainage openings 18A pass through the vertical direction in the vicinity of the front end of the upper end surface of the protruding base 37A, and are arranged side by side in the horizontal direction. A pair of drain openings 18B pass through the up-down direction in the vicinity of the front end of the upper end surface of the protruding base 37B, and are aligned side by side in the left-right direction. The pair of drainage openings 18A are arranged on the left and right sides of the locking claws 360 in the accommodation recess 36A when the bottom plate 30A is viewed from below. In addition, the pair of drain openings 18B are also arranged on the left and right sides of the locking claws 360 in the storage recess 36B when the bottom plate 30A is viewed from below.

The pair of first side plates 31A protrude upward from both ends of the bottom plate 30A in the front-rear direction. When viewed from one of the front-rear direction, each of the first side plates 31A is formed in an elongated rectangular plate shape. The second side plate 32A protrudes upward from the left end of the bottom plate 30A. When viewed from one of the left and right directions, the second side plate 32A is formed in a rectangular plate shape and has a second semicircular groove 320 recessed in a semicircular shape downward (see FIG. 4). The second semicircular groove 320 forms a through hole with the first semicircular groove 220 of the first housing cover 2A. The power cord 6 is led out of the body 10 through the through-hole.

(2.2.4) Intermediate Case Cover Each intermediate case cover 4A is made of a thermosetting resin such as urea resin. Each of the intermediate case covers 4A is formed in a flat rectangular parallelepiped shape as shown in FIGS. 1 and 4. Each intermediate case cover 4A includes a main body portion 40 having a rectangular outer shape when viewed from above, and a flange portion 41 protruding outward from an edge of the main body portion 40. The flange portion 41 is not formed near the center in the left-right direction of each of the leading edge and the trailing edge of the main body portion 40. In other words, each of the intermediate case covers 4A includes recessed portions 42 and 42 recessed into the main body portion 40 at the front end portion and the rear end portion thereof (only the front side recessed portion 42 is shown in FIG. 1).

As shown in FIG. 1, the main body portion 40 of each intermediate case cover 4A includes a first insertion port 21. Specifically, as an example, the first insertion port 21 includes a pair of blade insertion holes 210 and a terminal insertion hole 211. The pair of blade inserting holes 210 are holes for inserting a pair of plug blades 101A of the plug 101 into the body portion 40 in the vertical direction. The terminal insertion hole 211 is a hole for inserting the ground terminal 101B of the plug 101 and penetrates the body portion 40 in the vertical direction.

The main body portion 40 of each of the intermediate case covers 4A is provided on its bottom surface with three receiving portions recessed upward, and receives the terminal blocks 5 one-to-one to receive the connection portions 512 and 522 described later, and the ground connection portion 532. The connection portions 512 and 522 and the ground connection portion 532 are accommodated in the three storage portions so as to face the pair of blade through holes 210 and the terminal insertion holes 211, respectively.

The dimensional relationship is defined so that the outer dimension of the main body portion 40 when viewed from one of the vertical directions is slightly smaller than the opening dimension of the through hole 201 of the first case cover 2A. Each intermediate case cover 4A is inserted into the through-hole 201 and attached to the first case cover 2A so that the upper end surface of the main body portion 40 and the top surface of the top plate 20A of the first case cover 2A become slightly flush. Specifically, a pair of hook portions 204 provided at the leading edge and the trailing edge of the through hole 201 is hooked to the body portion 40 by the claws 204A of each hook portion 204 through the pair of recesses 42 of the middle case cover 4A. On the bottom surface, each intermediate case cover 4A is attached to the first case cover 2A. In short, each of the intermediate case covers 4A is restrained from falling downward by a pair of hook portions 204. In addition, since the flange portion 41 is caught on the edge portion of the through-hole 201, the intermediate case cover 4A is also prevented from falling upward through the through-hole 201.

(2.2.5) Terminal Block As shown in FIG. 4, the terminal block 5 includes a first terminal plate 51, a second terminal plate 52, and a third terminal plate 53. The first terminal plate 51, the second terminal plate 52, and the third terminal plate 53 are formed, for example, by bending a single metal plate made of brass. In this embodiment, one of the first terminal plate 51 and the second terminal plate 52 is a voltage electrode, the other is a ground-side electrode, and the third terminal plate 53 is a ground electrode.

As shown in FIG. 4, the first terminal plate 51 includes a strip-shaped conductive portion 511 extending in the left-right direction, and four connection portions 512 arranged at regular intervals in the left-right direction. The first terminal plate 51 includes a rectangular plate-shaped fixing piece 513 and a rectangular plate-shaped protruding piece 514. The conductive portion 511 is housed in the middle case 4B so that its thickness direction is along the front-rear direction. The four connection portions 512 are connected to the conductive portion 511 and are electrically connected to the conductive portion 511. Each connection portion 512 is a blade receiving spring provided with a pair of contact pieces, and the bolt blade 101A is electrically connected to the connection portion 512 by inserting the bolt blade 101A of the plug 101 between the pair of contact pieces.

The fixing piece 513 protrudes forward from a slightly center in the left-right direction of the conductive portion 511. The fixing piece 513 faces up and down in the thickness direction. The fixing piece 513 has a through-hole in the thickness direction. The electric wire 61 of the power cord 6 is, for example, a screw 515 inserted into a hole of a crimp terminal mounted on the front end of the power cord 6 through a screw hole of the fixing piece 513 to be screwed and fixed, thereby electrically connecting the first terminal plate 51.

The protruding piece 514 protrudes forward in a position closer to the right end than the center in the left-right direction of the conductive portion 511. Like the fixing piece 513, the protruding piece 514 is oriented in such a manner that its thickness direction is along the vertical direction. The protruding piece 514 has a through hole along its thickness direction. One of the pair of lead wires 120 extending from the second substrate 12 is inserted into a hole of the protruding piece 514 and fixed with solder or the like, thereby electrically connecting the first terminal plate 51.

Similar to the first terminal plate 51, the second terminal plate 52 includes a strip-shaped conductive portion 521 extending in the left-right direction and four connection portions 522 arranged at equal intervals in the left-right direction. The second terminal plate 52 includes a rectangular plate-shaped fixing piece 523 and a rectangular plate-shaped protruding piece 524. The conductive portion 521 is housed in the middle case 4B so that its thickness direction is along the front-rear direction. The four connection portions 522 are connected to the conductive portion 521 and are electrically connected to the conductive portion 521. Each connection portion 522 is a blade receiving spring provided with a pair of contact pieces, and the bolt blade 101A is electrically connected to the connection portion 522 by inserting the bolt blade 101A of the plug 101 between the pair of contact pieces.

The fixing piece 523 protrudes rearward in a slightly center in the left-right direction of the conductive portion 521. The fixing piece 523 is oriented so that its thickness direction is along the up-down direction. The fixing piece 523 has a through-hole in the thickness direction. The electric wire 62 of the power cord 6 is, for example, a screw 525 inserted into a hole of a crimp terminal mounted on the front end of the power cord 6 and penetrates the screw hole of the fixing piece 523 to be screwed and fixed, thereby electrically connecting the second terminal plate 52.

The protruding piece 524 protrudes to the right in the right end of the conductive portion 521. As with the fixing piece 523, the protruding piece 524 is oriented in such a manner that its thickness direction is along the vertical direction. The protruding piece 524 has a through hole in the thickness direction. The other of the pair of lead wires 120 extending from the second substrate 12 is inserted into a hole of the protruding piece 524 and fixed with solder or the like, thereby electrically connecting the second terminal plate 52.

As shown in FIG. 4, the third terminal plate 53 includes a strip-shaped grounding conductive portion 531 extending in the left-right direction and four ground-connecting portions 532 arranged at equal intervals in the left-right direction. The third terminal plate 53 includes a rectangular plate-shaped fixing piece 533. The ground conductive portion 531 is housed in the middle case 4B so that its thickness direction is along the front-rear direction. The four ground connection portions 532 are connected to the ground conductive portion 531 and are electrically connected to the ground conductive portion 531. Each ground connection portion 532 is a blade receiving spring provided with a pair of contact pieces, and the ground terminal 101B and the ground connection portion 532 are electrically connected by inserting the ground terminal 101B of the plug 101 between the pair of contact pieces. connection.

The fixing piece 533 protrudes rearward at a position closer to the right end than the center in the left-right direction of the grounding conductive portion 531. The fixing piece 533 is oriented in such a manner that its thickness direction is along the vertical direction. The fixing piece 533 has a through-hole in the thickness direction. The electric wire 63 of the power cord 6 is, for example, a screw 535 inserted into a hole of a crimp terminal mounted on the front end of the power cord 6 through a screw hole of the fixing piece 533 to be screwed and fixed, thereby electrically connecting the third terminal plate 53.

By connecting the power plug of the power cord 6 to a socket provided on a wall or the like, the socket 1 for a desk of this embodiment can supply power to an appliance from a power source such as a commercial AC power source (for example, 100V, 60Hz).

(2.2.6) Intermediate case The intermediate case 4B is formed of a thermosetting resin such as a urea resin, similarly to the intermediate case cover 4A. The middle case 4B is formed in a flat rectangular box shape with an open top surface. The intermediate case 4B is configured to individually accommodate the first terminal plate 51, the second terminal plate 52, and the third terminal plate 53 of the terminal block 5. The intermediate case 4B includes an insulating wall protruding upward from the inner bottom surface. The insulating wall is formed to electrically insulate the connection portion 512 and the connection portion 522 adjacent to each other corresponding to each of the first insertion openings 21. In addition, the insulating wall is formed so that the four ground connection portions 532 side by side in the left-right direction are electrically insulated from each set of connection portions 512 and 522.

(2.2.7) Suction section As shown in FIG. 3, the adsorption sections 9A and 9B each include a flat rectangular plate-shaped permanent magnet 91 and a yoke 92. The yoke 92 has an open bottom and front and rear ends, and has an inverted U-shape when viewed from one of the front and rear directions. The permanent magnet 91 and the yoke 92 each have a hole penetrating the thickness direction in the center of the front-rear direction and the left-right direction. In a state where the permanent magnet 91 is stored in the yoke 92, for example, a pin for caulking and sealing is penetrated through the above-mentioned holes of the permanent magnet 91 and the yoke 92, and the end of the pin is caulked to seal the permanent magnet 91 to the yoke Iron 92. The yoke 92 is provided at its rear end with a protruding piece 920 (refer to FIG. 4) protruding rearward. Each suction portion 9 is mounted on the first housing by locking the protruding piece 920 to the locking hole 361 of the storage recess 36, and further locking the front end of the yoke 92 to the locking claw 360 of the storage recess 36. Body 3A. The desk socket 1 can be mounted on an iron table or a locker through the suction sections 9A and 9B and the suction section 9C of the second block 1B described later.

(2.3) Block 2 (2.3.1) Overall structure of Block 2 Block 2 of Block 2 is provided with two USB ports, and can be supplied with DC power by inserting a USB plug 102. Specifically, the second block 1B includes a second housing cover 2B, a second housing body 3B, two USB connectors 7 (7A, 7B), and a pair of cover covers 8 (8A, 8B). The second block 1B includes a first substrate 11, a conversion circuit, and a second substrate 12. Further, the second block 1B includes two elastic materials 13 and 13, a display element 14, and a suction portion 9 (9C).

(2.3.2) As shown in FIG. 1 and FIG. 4, the first substrate 11 and the second substrate 11 are attached to two USB connectors 7 (7A, 7B) near the left end of the top surface (mounting surface). ) Printed wiring board. When viewed from one of the vertical directions, the first substrate 11 has an elongated, slightly rectangular plate shape along the horizontal direction. The first substrate 11 includes recesses 111 and 111 recessed inward at the right ends of the leading edge and the trailing edge. In addition, the first substrate 11 has recesses 112 and 112 recessed inward at the left ends of the leading edge and the trailing edge. Further, the first substrate 11 has a through hole 110 (see FIG. 1) penetrating in the thickness direction at the center in the front-rear direction and at a position slightly close to the right. The through hole 110 is a hole for penetrating the hub portion 207 (see FIG. 3) located in the second case cover 2B.

The display element 14 is mounted on the mounting surface of the first substrate 11 and emits display light in response to the state of supply of DC power to the conductor 1020 of the USB plug 102. In this embodiment, the display element 14 is mounted on the first substrate 11 at an end portion (right end portion) opposite to the second substrate 12 in a side-by-side direction of the first substrate 11 and the second substrate 12. The display element 14 is, for example, a surface-mounted LED (Light Emitting Diode) chip, and is connected in series to the USB connector 7. In other words, the display element 14 is turned on when the USB plug 102 is connected to the USB connector 7 and is turned on, and is turned off when the USB plug 102 is not connected to any of the USB connectors 7. Therefore, the display element 14 can be used to confirm the energization and determine whether there is a circuit abnormality on the substrate. In addition, the display element 14 is connected in series with a resistor to limit the current flowing through the display element 14.

Each USB connector 7 is, for example, a connector (jack) connectable to a USB type A plug (see FIGS. 12 to 14). However, the type of the USB connector is not particularly limited. In this embodiment, the USB connectors 7A and 7B are aligned side by side with the first substrate 11 so that their orientations are uniform. That is, the plastic substrates on which the four terminals (VBUS, -DATA, + DATA, GND) are formed in the USB connectors 7A and 7B are aligned so as to be arranged near the same side in the left and right directions. Therefore, the USB logos printed on the surfaces of the two USB plugs 102 are connected to the two USB connectors 7A and 7B, respectively, in the same direction (for example, right).

A power terminal (VBUS) and a ground terminal (GND) of each USB connector 7 are connected to a wiring conductor (for example, copper foil) formed on the first substrate 11 with solder. Each USB connector 7 is electrically connected to a DC output terminal on the second substrate 12 side via a wiring conductor of the first substrate 11 and a plurality of lead wires 121 (see FIG. 4).

The second substrate 12 is a printed wiring substrate on which a plurality of electronic components 15 constituting a conversion circuit are mounted. The conversion circuit uses, for example, AC power (for example, 100 V) received from the terminal block 5 side to generate a high-frequency AC voltage, and then generates a rectified and smoothed DC voltage through a diode, an electrolytic capacitor, and the like. Then, the conversion circuit outputs a stabilized DC voltage (for example, 5V) by switching the generated DC voltage. In short, the conversion circuit is configured to convert AC power from the terminal block 5 side into DC power. As shown in FIG. 4, one pair of AC input terminals of the conversion circuit is electrically connected to the protruding piece 514 of the first terminal plate 51 and the protruding piece 524 of the second terminal plate 52 through the wires 120 and 120, respectively. Sexual connection. The conversion circuit supplies a stabilized DC voltage of 5V to the first substrate 11 through the DC output terminal.

(2.3.3) Second case cover The second case cover 2B is formed integrally with the first case cover 2A of the first block 1A, and forms the case cover 2 together with the first case cover 2A. Therefore, similarly to the first case cover 2A, the second case cover 2B is made of, for example, a thermoplastic resin such as ABS resin. As shown in FIG. 1, the second case cover 2B is formed in a flat box shape with its bottom and left sides formed by a top plate 20B, a pair of first side plates 21B and 21B, a second side plate 22B, and a connecting plate 23B. The left ends of the connection plate 23B and the pair of first side plates 21B are connected to the first case cover 2A of the first block 1A.

When viewed from one of the vertical directions, the top plate 20B has a rectangular plate shape that is long in the horizontal direction. The top plate 20B includes a pair of two second insertion openings 22 in the first end surface 2001 (top surface) thereof. Each second insertion port 22 penetrates the thickness direction of the top plate 20B. Each of the second insertion ports 22 has a rectangular shape when viewed from one of the vertical directions. The second insertion ports 22 and 22 are arranged side by side in the left-right direction so that the longitudinal direction of each of the second insertion ports is along the front-rear direction. In the following, when the two second insertion ports 22 are distinguished from each other, the second insertion port 22 disposed near one of the first blocks 1A is also referred to as a "second insertion port 221" and the other is referred to as "Second insertion port 222" (refer to FIG. 7A).

The top plate 20B includes a weir portion 23 that protrudes upward from a region surrounding each of the second insertion openings 22 in the first end surface 2001 (see FIG. 7A). When viewed from one of the vertical directions, each of the weir portions 23 has a rectangular frame shape with four walls. Hereinafter, the four walls are referred to as a front wall 231, a rear wall 232, a first side wall (opposing wall) 233, and a second side wall 234. Both the first side wall 233 and the second side wall 234 are elongated in the front-rear direction. The width dimension of the first sidewall 233 in the left-right direction is smaller than the width dimension of the second sidewall 234 in the left-right direction.

Each weir portion 23 includes a flat upper end surface 230 (the upper end surface of the four walls 231 to 234) (see FIG. 7B). The upper end surface 230 is located higher than the surrounding flat first end surface 2001. The two weir portions 23 have a structure that is plane-symmetrical in the left-right direction. That is, in the two weir portions 23, the two narrow first side walls 233 are adjacent to each other and face each other. On the other hand, the two wide second side walls 234 are located away from each other.

The top plate 20B includes a groove 240 as shown in FIG. 7A. The groove 240 extends along the front-rear direction. The groove 240 is formed by the first side walls 233 of the two weir portions 23 adjacent to each other. That is, the bottom surface of the groove 240 is a part of the first end surface 2001.

The top plate 20B includes a storage portion 241 as shown in FIG. 7A, and is provided adjacent to the second side wall 234 of each of the weir portions 23. The accommodating portions 241 and 241 are recessed downward to accommodate the two elastic materials 13 one-to-one respectively. When viewed from one of the vertical directions, each of the storage portions 241 is elongated along the left-right direction.

In addition, as shown in FIG. 7A, the top plate 20B is provided with recesses 242 and 242 recessed downward from the front edge and the rear edge of the first end surface 2001. When viewed from one of the up and down directions, the recesses 242 and 242 are provided at two corners (left front side) of a rectangular projection area where the covers 8A and 8B are closed with respect to the first end surface 2001. Right back 隅) nearby. When viewed from one of the vertical directions, each of the recesses 242 extends in the left-right direction. Each recess 242 is configured to guide a corresponding guide piece 87 (described later) of the cover 8 in the left-right direction.

As shown in FIG. 7A, the top plate 20B has a through hole 243 penetrating the thickness direction in the vicinity of the right end. When viewed from one of the up and down directions, the through hole 243 has a rectangular shape that is elongated in the front and rear direction. The through hole 243 is disposed to face the display element 14 mounted on the first substrate 11. The translucent lamp cover 16 is attached to the top plate 20B so as to close the through-hole 243. The globe 16 is formed of a translucent resin such as an acrylic resin. The light radiated from the display element 14 passes through the lamp cover 16 and is emitted to the outside of the device body 10.

As shown in FIG. 6, the top plate 20B includes a hub portion 207 protruding downward on the bottom surface 2002. The hub 207 is cylindrical and has a screw hole. The hub portion 207 is provided on the left side of the through hole 243. The hub portion 207 is in contact with the hub portion 310 described later of the second casing 3B.

In addition, as shown in FIG. 6, the top plate 20B includes a plurality of restriction protrusions protruding downward from the bottom surface 2002. Specifically, the top plate 20B includes a pair of first restricting ridges 251, a pair of second restricting ridges 252, a pair of third restricting ridges 253, and a pair of fourth restricting ridges 254. These restricting protrusions are configured to sandwich the first substrate 11 in the up-down direction together with the restricting protrusions 371 to 374 (described later) provided in the second housing body 3B to restrict the first substrate 11 from being displaced in the up-down direction.

As shown in FIG. 6, the two first restricting protrusions 251 are formed side by side in the front-rear direction at the right end of the bottom surface 2002 of the top plate 20B. Each of the first restricting ridges 251 is formed in a strip-like shape extending in the up-and-down direction, and is formed integrally with the second side plate 22B. The size in the vertical direction of each first restricting ridge 251 is slightly equal to the size in the vertical direction of the second side plate 22B (see FIG. 3). Each of the first restricting ridges 251 faces the right end of the first substrate 11. Each of the first restricting protrusions 251 may be in contact with the right end of the first substrate 11 or may be slightly separated.

As shown in FIG. 6, the second restricting ridge 252, the third restricting ridge 253, and the fourth restricting ridge 254 are arranged in the above order from the right end among the leading edge and the trailing edge of the bottom surface 2002 of the top plate 20B.

The two second restricting ridges 252 have a strip-like shape extending in the up-and-down direction, and face each other in the front-rear direction. Each of the second restricting protrusions 252 is formed integrally with the first side plate 21B. The size in the vertical direction of each second restricting ridge 252 is slightly equal to the size in the vertical direction of the first side plate 21B (see FIG. 3). In addition, when viewed from one of the left and right directions, each of the second restricting ridges 252 is formed in a substantially L shape. That is, each of the second restriction ridges 252 has a dent that is recessed in a direction away from the other second restriction ridge 252 in an end portion facing the other second restriction ridge 252. 252A (refer to Figure 3). The first substrate 11 is accommodated in the recess 252A of each of the second restricting ridges 252 to restrict its displacement in the front-rear direction and above. Each of the second restricting ridges 252 is in contact with the first substrate 11.

When viewed from one of the left and right directions, the two third restricting protrusions 253 have a rectangular plate shape (refer to FIG. 3), and face each other in the front-rear direction. Each of the third restricting protrusions 253 is formed integrally with the first side plate 21B. The vertical dimension of each of the third restricting protrusions 253 is, for example, slightly the same as the vertical dimension of the USB connector 7. The lower end of each of the third restricting protrusions 253 faces the top surface of the first substrate 11. Each of the third restricting protrusions 253 is in contact with the first substrate 11.

When viewed from one of the up and down directions, the two fourth restricting ridges 254 are T-shaped and face each other in the forward and backward directions. The end portions of the T-shaped fourth restricting ridges 254 extending in the front-rear direction are formed integrally with the first side plate 21B, respectively. The size in the vertical direction of each of the fourth restricting protrusions 254 is, for example, slightly the same as the size in the vertical direction of the USB connector 7. The lower end of each of the fourth restricting protrusions 254 faces the top surface of the first substrate 11. Each of the fourth restricting ridges 254 is in contact with the first substrate 11.

In addition, as shown in FIG. 6, the top plate 20B includes a plurality of reinforcing ridges protruding from the first substrate 11 on the bottom surface 2002. Specifically, the top plate 20B includes one first reinforcing ridge 261 and two sets (that is, a total of four) of a pair of second reinforcing ridges 262. These reinforcing ridges are provided around the second insertion ports 22 and 22, and suppress the vertical deformation of the top plate 20B accompanying insertion and removal of the USB plug 102. The first reinforcing ridge 261 has a rectangular plate shape and is disposed between the two second insertion ports 22 when viewed from the bottom surface 2002 of the top plate 20B. Each pair of second reinforcing ridges 262 has a rectangular plate shape, and is disposed near the leading edge and the trailing edge of the corresponding second insertion opening 22, respectively.

Here, as shown in FIGS. 3 and 6, the top plate 20B of this embodiment includes a first convex wall 171 and a second convex wall 172 on the bottom surface 2002. The first convex wall 171 and the second convex wall 172 are formed to protrude downward from the bottom surface 2002. The first convex wall 171 and the second convex wall 172 constitute a partition wall 17 together with the third convex wall 173 described later in the second case 3B. When viewed from one of the left and right directions, the first convex wall 171 is formed in an L-shaped plate shape (see FIG. 3). That is, the first convex wall 171 includes a first portion 171A extending in the front-rear direction and a second portion 171B extending in the vertical direction from the front end of the first portion 171A. The second portion 171B is formed integrally with the first side plate 21B on the front side. The second convex wall 172 faces the second portion 171B of the first convex wall 171 in the front-rear direction. The second convex wall 172 is formed integrally with the first side plate 21B on the rear side.

The lower end of the second portion 171B of the first convex wall 171 and the lower end of the second convex wall 172 both extend to the lower end of the first side plate 21B. Specifically, the second portion 171B of the first convex wall 171 and the second convex wall 172 extend so as not to protrude further below the notch portion 270 (which constitutes the slit 27) described later of each of the first side plates 21B. .

As shown in FIG. 6, a gap exists between the rear end of the first portion 171A of the first convex wall 171 and the second convex wall 172 without forming a convex wall. Therefore, the third convex wall 173 of the second housing body 3B is combined with the first convex wall 171 and the second convex wall 172 in the up-down direction to form a through hole 174 (refer to reference) image 3).

Further, as shown in FIG. 6, the top plate 20B is provided with five protruding ridges 255 protruding downward from the bottom surface 2002 in a region further to the left than the first convex wall 171 and the second convex wall 172. The protruding ridges 255 are elongated along the up-down direction, and slightly protrude from the lower end of the first side plate 21B. These protruding ridges 255 are configured to sandwich the second substrate 12 in the vertical direction together with the plurality of supporting ridges 375 described later in the second housing body 3B, and limit the displacement of the second substrate 12 to the vertical direction.

As shown in FIGS. 3 and 6, the connecting plate 23B connects the left end of the top plate 20B with the right end of the top plate 20A on the 1A side of the first block which is lower than the left end. The connecting plate 23B is formed in a rectangular plate shape, and is slightly inclined in the vertical direction. The connection plate 23B includes a hub portion 208 protruding downward on an inner surface (bottom surface) thereof. The hub 208 is cylindrical and has a screw hole. The hub portion 208 is in contact with the hub portion 311 described later of the second housing body 3B.

The first side plates 21B and 21B protrude downward from both ends in the front-rear direction of the top plate 20B. When viewed from one of the forward and backward directions, each of the first side plates 21B is formed in a long and narrow rectangular plate shape along the left and right directions. The first side plates 21B and 21B have, at their left ends, a slightly lower half connected to the right ends of the first side plates 21A and 21A of the first housing cover, respectively, and a slightly upper half connected to the front and rear ends of the connection plate 23B. link. The size of each first side plate 21B in the vertical direction is slightly larger than the size of the first side plate 21A in the vertical direction.

Each of the first side plates 21B includes, as shown in FIG. 7B, a recessed portion 280 in the second end surface 2003 (outer surface) for forming the guide groove 28 together with the second case body 3B. The recessed portion 280 is recessed slightly upward from the lower end of the first side plate 21B. The recessed portion 280 is elongated in the left-right direction. When viewed from one of the front-rear direction, the recessed portion 280 is arranged such that a straight line drawn straight downward from the center position (ie, the groove 240) between the two second insertion openings 22 in the left-right direction passes through the left-right direction of the recessed portion 280. The center.

Here, the recessed portion 280 includes a pair of cutout portions 270. Each notch portion 270 is recessed further upward than the top surface in the recessed portion 280. The pair of cutout portions 270 are arranged side by side in the left and right directions on the top surface inside the recessed portion 280. When viewed from one of the front-rear direction, the pair of cutout portions 270 are arranged symmetrically with respect to the straight line. The guide groove 28 and the slit 27 will be described in detail in the field of "(2.3.5) Slit and Guide groove".

(2.3.4) The second case body The second case body 3B is formed integrally with the first case body 3A of the first block 1A, and together with the first case body 3A, the case body 3 is formed. Therefore, similarly to the first case 3A, the second case 3B is made of a thermoplastic resin such as ABS resin. As shown in FIG. 5A, the second housing body 3B is formed into a flat box shape with its top and left sides opened by a bottom plate 30B, a pair of first side plates 31B, and a second side plate 32B.

The pair of first side plates 31B protrude upward from both ends in the front-rear direction of the bottom plate 30B. When viewed from one of the front-rear direction, each of the first side plates 31B is formed in an elongated rectangular plate shape. Each of the first side plates 31B is continuously connected to the right end of the first side plate 31A of the first casing 3A of the first block 1A in the left end thereof. The size in the vertical direction of each first side plate 31B is equal to the size in the vertical direction of the first side plate 31A. The second side plate 32B projects upward from the right end of the bottom plate 30B. When viewed from one of the left and right directions, the second side plate 32B is formed in a rectangular plate shape.

When viewed from one of the up and down directions, the bottom plate 30B has a rectangular plate shape that is long in the left and right direction. The bottom plate 30B is provided on its top surface with two hub portions 310 and 311 protruding upward (see FIG. 5A). Each hub portion has a cylindrical shape and has a through hole 304 penetrating in the vertical direction.

The hub portion 310 is provided near the right end of the top surface of the bottom plate 30B, and is configured to contact the front end of the hub portion 207 of the second case cover 2B located on the top plate 20B. Here, the hub portion 207 located on the top plate 20B is in contact with the hub portion 310 in a state of penetrating through the through hole 110 (refer to FIG. 1) of the first substrate 11, so that the first substrate 11 undergoes displacement in the front-back and left-right directions. limit.

The hub portion 311 is provided near the left end of the top surface of the bottom plate 30B, and is configured to be in contact with the front end of the hub portion 208 of the second housing cover 2B located on the connection plate 23B. Here, since the left end of the second substrate 12 is in contact with the hub portion 311, further displacement in the left direction is restricted.

The bottom plate 30B includes, on the bottom surface, one storage recess 36 (36C) for storing the suction portion 9 (9C) (see FIG. 3). The storage recess 36C is provided near the right end of the bottom surface of the bottom plate 30B. When viewed from one of the vertical directions, the storage recess 36C is formed in a rectangular shape and is recessed upward.

In addition, the bottom plate 30B has, on the top surface, a surface of a region corresponding to the storage recess 36C formed one step higher than the surrounding surface. In other words, the bottom plate 30B is provided on its top surface with a projection 37 (37C) that projects upward in a rectangular shape (refer to FIGS. 5A and 5B). The projection 37C and the first side plate 31B on the rear side face each other so as to form a gap therebetween. On the other hand, the protruding base 37C and the first side plate 31A on the front side are integrally formed without a gap. The bottom plate 30B is provided with locking claws 360 and locking holes 361 on the inner bottom surface of the storage recess 36C in the same manner as the storage recesses 36A and 36B of the bottom plate 30A.

Here, as shown in FIGS. 5A and 5B, the bottom plate 30B is provided with a pair of drain ports (drain holes) connecting the external space of the body 10 and the internal space of the body 10 in the same manner as the drainage ports 18A and 18B of the bottom plate 30A. ) 18 (18C, 18C). A pair of drainage openings 18C penetrate the up-down direction in the vicinity of the front end of the upper end surface of the protruding table 37C, and are juxtaposed with each other in the left-right direction.

In addition, as shown in FIG. 5A, the bottom plate 30B includes a plurality of limiting protrusions protruding upward from the top surface thereof. Specifically, the bottom plate 30B includes a pair of first restricting ridges 371, a pair of second restricting ridges 372, a pair of third restricting ridges 373, and a pair of fourth restricting ridges 374. These restricting protrusions are configured to sandwich the first substrate 11 in the up-and-down direction together with the plurality of restricting protrusions 251 to 254 of the second housing cover 2B, and to restrain the first substrate 11 from being displaced in the up-down direction.

As shown in FIG. 5A, the first restricting protrusion 371, the second restricting protrusion 372, the third restricting protrusion 373, and the fourth restricting protrusion 374 are from the right end to the front and rear edges of the top surface of the bottom plate 30B. They are arranged in the above order.

As shown in FIG. 5A, the two first restricting protrusions 371 are located near the right end of the top surface of the bottom plate 30B (to the left of the projection 37C), and face each other in the front-rear direction. Each of the first restricting ridges 371 extends in the longitudinal direction and is formed integrally with the first side plate 31B. When viewed from one of the vertical directions, each of the first restricting ridges 371 is formed in a T shape.

The size of each of the first restricting ridges 371 in the vertical direction is larger than the size of the first side plate 31B in the vertical direction. That is, the upper end of each of the first restricting protrusions 371 protrudes further upward than the upper end of the first side plate 31B (see FIG. 1). Further, as shown in FIG. 1, each of the first restricting protrusions 371 has a support recess 371A on the upper end thereof for supporting the first substrate 11. That is, the rear end of the upper end of the first restricting ridge 371 on the front side and the front end of the upper end of the first restricting ridge 371 on the rear side are cut out. The first substrate 11 is placed on the bottom surfaces of the support recesses 371A and 371A, thereby restricting the displacement in the front-rear direction and the downward direction. Further, as shown in FIG. 1, each of the first restricting protrusions 371 is provided with a supporting protrusion 371B protruding to the left. The left end surface in each recess 111 of the first substrate 11 abuts the supporting protrusion 371B, so the rightward displacement of the first substrate 11 is also limited.

As shown in FIG. 5A, the two second limiting protrusions 372 are located closer to the right than the center in the left-right direction of the top surface of the bottom plate 30B, and face each other in the front-rear direction. Each of the second restricting ridges 372 is formed in a strip-like shape extending in the vertical direction, and is formed integrally with each of the first side plates 31B. The upper end of each second restricting protrusion 372 protrudes further upward than the upper end of the first side plate 31B (see FIG. 1). However, the size of the second restricting protrusion 372 in the up-down direction is smaller than the size of the first restricting protrusion 371 in the up-down direction, and from the top surface of the bottom plate 30B to the inside of the support recess 371A of the first restricting protrusion 371. The distance to the bottom surface is slightly equal.

The bottom surface of the first substrate 11 is in contact with the second restricting protrusions 372 and 372. That is, the second restriction protrusion 372 restricts the downward movement of the first substrate 11 together with the other restriction protrusions 371, 373, and 374.

Here, as shown in FIG. 4, the second restricting protrusions 372 and 372 are arranged slightly to the right of the USB connector 7B mounted on the right side of the first substrate 11 when viewed from one of the up and down directions. Therefore, the stress applied to the first substrate 11 when the USB plug 102 is inserted can be effectively dissipated to the device body 10 side. In short, deformation of the first substrate 11 can be suppressed.

As shown in FIG. 5A, the two third restricting protrusions 373 are located on the left side of the second restricting protrusions 372 and face each other in the front-rear direction. Each of the third restricting ridges 373 has a strip-like shape extending in the up-and-down direction, and is formed integrally with each of the first side plates 31B. The size of the third restricting protrusion 373 in the vertical direction is slightly equal to the size of the second restricting protrusion 372 in the vertical direction. The bottom surface of the first substrate 11 is in contact with the third restricting protrusions 373 and 373. That is, the third restriction protrusion 373 restricts the downward displacement of the first substrate 11 together with the other restriction protrusions 371, 372, and 374.

Here, as shown in FIG. 4, the third restricting protrusions 373 and 373 are arranged between the USB connectors 7A and 7B mounted on the first substrate 11 when viewed from one of the up and down directions. Therefore, the stress applied to the first substrate 11 when the USB plug 102 is inserted can be effectively dissipated to the device body 10 side. In short, the third restricting protrusion 373 can suppress the deformation of the first substrate 11 together with the second restricting protrusion 372.

As shown in FIG. 5A, the two fourth restricting protrusions 374 face each other near the center in the left-right direction of the top surface of the bottom plate 30B in the front-rear direction. Each of the fourth restricting ridges 374 extends in the longitudinal direction and is formed integrally with the first side plate 31B. When viewed from one of the vertical directions, each of the fourth restricting ridges 374 is formed in a T shape.

The upper end of each fourth restricting protrusion 374 protrudes further upward than the upper end of the first side plate 31B (see FIG. 1). Further, as shown in FIG. 1, each of the fourth restricting protrusions 374 has a support recess 374A on the upper end thereof for supporting the first substrate 11. That is, the rear end of the upper end of the fourth restricting ridge 374 on the front side and the front end of the upper end of the fourth restricting ridge 374 on the rear side are cut out. The first substrate 11 is placed on the bottom surfaces of the support recesses 374A and 374A, thereby restricting displacement in the front-rear direction and below. Further, as shown in FIG. 1, each of the fourth restricting protrusions 374 includes a supporting protrusion 374B protruding to the right. The right end surface in each recess 112 of the first substrate 11 abuts the supporting protrusion 374B, so the leftward displacement of the first substrate 11 is also limited.

In addition, as shown in FIG. 4, the fourth restricting protrusions 374 and 374 are arranged slightly to the left of the USB connector 7A mounted on the first substrate 11 when viewed from one of the up and down directions. Therefore, the stress applied to the first substrate 11 when the USB plug 102 is inserted can be effectively dissipated to the device body 10 side. In short, the fourth restricting protrusion 374 can suppress the deformation of the first substrate 11 together with the other restricting protrusions 372 and 373.

Here, as shown in FIG. 5A, the bottom plate 30B of this embodiment is provided with a third convex wall 173 on the bottom surface. The third convex wall 173 is formed to protrude upward from the bottom surface of the bottom plate 30B. The third convex wall 173 constitutes the partition wall 17 together with the first convex wall 171 and the second convex wall 172 of the second case cover 2B. When viewed from one of the left and right directions, the third convex wall 173 is formed into a substantially rectangular plate shape. The third convex wall 173 is formed such that its upper end protrudes upward from the upper end of the first side plate 31B and is disposed above the top surface of the first substrate 11. The vertical dimension of the third convex wall 173 is, for example, slightly larger than the vertical dimension of the first restricting convex strip 371.

The lower part of the front end and the lower part of the rear end of the third convex wall 173 are formed integrally with the first side plates 31B and 31B, respectively. The third convex wall 173 has recesses recessed downward at the front end and the rear end, respectively, and the second portion 171B and the second convex wall 172 of the first convex wall 171 are fitted into these recesses. The partition wall 17 composed of the convex walls 171 to 173 is disposed between the first substrate 11 and the second substrate 12 in a side-by-side direction (left-right direction) of the first substrate 11 and the second substrate 12 (refer to FIG. 4). ). The partition wall 17 is provided with a through-hole 174 penetrating in the left-right direction. The plurality of conductive wires 121 electrically connecting the input terminal of the first substrate 11 and the DC output terminal of the second substrate 12 are wired through the through-hole 174.

Further, as shown in FIG. 5A, the bottom plate 30B is provided with seven supporting ribs 375 protruding from above in a region on the top surface which is more to the left than the third convex wall 173. Two of the seven supporting ribs 375 are formed integrally with the first side plate 31B on the front side, two are integrally formed with the first side plate 31B on the rear side, and two are integrally formed with the third convex wall 173, respectively. It is formed and finally integrated with one hub 311. None of the seven supporting ribs 375 extends to the upper end of the first side plate 31B, and has a very short size compared to the size of the first side plate 31B in the vertical direction (for example, half the size of the first side plate 31B). In other words, the supporting ridge 375 has a very short dimension compared with the size of the second restricting ridge 372 and the third restricting ridge 373 on which the first substrate 11 is placed above.

The seven supporting ridges 375 are configured to sandwich the second substrate 12 placed on the upper end thereof together with the five protruding ridges 255 of the second housing cover 2B in the vertical direction. In short, the supporting ridges 375 and the protruding ridges 255 limit the vertical displacement of the second substrate 12. In addition, the front end and the rear end of the second substrate 12 are in contact with a plurality of small protrusions that protrude slightly inward from the respective first side plates 31B, so the displacement of the second substrate 12 in the front and rear directions is also limited. Further, the right end of the second substrate 12 is in contact with the third convex wall 173 of the partition wall 17 and the left end of the second substrate 12 is in contact with the hub 311, so the displacement in the left-right direction of the second substrate 12 is also limited.

In short, the device body 10 of this embodiment is configured to support the first substrate 11 and the second substrate 12 side by side in the left-right direction; further, a partition wall 17 is used to separate and house the first substrate 11 And the space of the second substrate 12. Furthermore, regarding the height position in the vertical direction, the first substrate 11 is supported at a higher position in the container body 10 than the second substrate 12. This allows the two USB connectors 7 mounted on the first substrate 11 to face the second insertion port 22 as close to each other as possible. On the other hand, since the second substrate 12 is disposed as close to the bottom plate 30B as possible, a space capable of accommodating a plurality of electronic components 15 mounted on the top surface of the second substrate 12 is formed in the device body 10.

(2.3.5) Slit and guide groove The casing 3, as shown in FIG. 1, is provided with a fitting protrusion 312 protruding slightly upward in an edge portion of the open top surface. The fitting protrusion 312 is formed so as to cover the entire edge portion. The fitting protrusion 312 is provided more inward than the outer surface of the case body 3 (for example, the outer surface of the first side plate 31B). The fitting protrusion 312 is inserted into the housing cover 2 from the open bottom surface of the housing cover 2, and the outer surface of the housing body 3 and the outer surface of the housing cover 2 are slightly flush with each other.

Here, as described above, each of the first side plates 21B of the second case cover 2B includes a recessed portion 280 on the second end surface 2003 thereof. However, the fitting protrusion 312 is configured to be located closer to the inside of the body 10 than the recessed portion 280 when viewed from one of the up and down directions. In other words, a part of the fitting protrusion 312 is exposed through the recessed portion 280 (see FIG. 7B). In short, the casing cover 2 and the casing body 3 are combined to form a guide groove 28 that is elongated in the left-right direction and recessed inward.

Further, as described above, each of the first side plates 21B of the second case cover 2B is provided with notch portions 270 and 270 that are recessed further upward than the top surface in the recessed portion 280. However, as shown in FIG. 7B, when viewed from one of the front-rear direction, the fitting protrusion 312 does not extend upward to the extent that the notch portion 270 is covered. Therefore, by combining the case cover 2 and the case body 3, a slit 27 is formed which penetrates the side plate of the device body 10 in the thickness direction.

(2.3.6) Cover and elastic material A pair of covers 8 are the same molded product and have the same shape and the same size. Each cover 8 is formed of a thermoplastic resin such as ABS resin. Each cover 8 is attached to the device body 10 and is configured to be slidable with respect to the device body 10 between a first position covering the second insertion port 22 as a target of coverage and a second position exposing the second insertion port 22. . In this embodiment, the number of the second insertion ports 22 is two, and the number of the cover 8 is also two. That is, the number of the second insertion openings 22 to be covered by each cover 8 is one each. Hereinafter, the cover 8 having the second insertion port 221 on the left as a covering target is referred to as "cover 8A", and the cover 8 having the second insertion port 222 on the right as a covering target is referred to as "cover 8B".

Each cover 8 is configured to be able to slide independently of the other cover 8 with respect to the second insertion opening 22 that is the target of coverage. That is, the cover 8A and the cover 8B are independent and movable. Hereinafter, the direction in which the cover 8 slides is also referred to as a "sliding direction". The “sliding direction” is a direction along (not intersecting) the first facing surface 810 (bottom surface) of the main body portion 81 and the second facing surface 820 (inner surface) of each side portion 82 described later. In this embodiment, the "sliding direction" corresponds to the left-right direction. Each cover 8 is configured to slide between the first position and the second position so that the first facing surface 810 follows the first end surface 2001 and the second facing surface 820 follows the second end surface 2003.

Each cover 8 includes a main body portion 81 and a pair of side portions 82 (82A, 82B), as shown in FIGS. 8A, 8B, and 9. Further, each cover 8 is provided with guide projections 83, 83, claws 84, 84, a first projection 85 (projection), a pair of second projections 86, 86 (projection), a guide piece 87, and压 片 88。 The tight sheet 88.

As shown in FIG. 8B, the main body portion 81 is formed in a substantially rectangular plate shape when viewed from one of the up and down directions. As shown in FIG. 8A, the main body portion 81 is gently curved so as to be convex upward. The first facing surface 810 (bottom surface) of the main body portion 81 faces the first end surface 2001 (top surface) of the body 10 where the second insertion opening 22 is provided. A mark 80 (refer to FIG. 10) indicating a sliding direction of the cover is provided on the top surface of the main body portion 81. The mark 80 is formed by, for example, protruding a part of the top surface of the main body portion 81 upward in a triangular shape.

As shown in FIG. 9, the side portions 82A and 82B protrude downward from both ends in the front-rear direction of the main body portion 81. In other words, when viewed from one of the left and right directions, the main body portion 81 and the side portions 82A and 82B are generally U-shaped. The second facing surface 820 (inner surface) of each side portion 82 faces the second end surface 2003 (outer surface) of the first side plate 21B.

As shown in FIG. 9, the guide ridges 83 and 83 protrude in the lower part of the second facing surface 820 of the side portions 82 and 82 in a direction approaching each other along the front-rear direction. When viewed from one of the front-rear direction, each guide ridge 83 is formed slenderly along the left-right direction, and the size of the left-right direction is slightly equal to that of the side portion 82 in the left-right direction.

The guide ribs 83 and 83 are fitted into the guide grooves 28 and 28 of the device body 10 extending in the sliding direction. The cover 8 restricts movement along a second end surface 2003 of the first side plate 21B in a direction crossing the sliding direction (for example, an up-down direction) by the guide groove 28.

As shown in FIG. 9, the claws 84 and 84 are provided on the second facing surface 820 of the side portions 82 and 82 in the vicinity of the center in the left-right direction of the guide protrusion 83. Each of the claws 84 and 84 protrudes from the second facing surface 820 in a direction approaching each other along the front-rear direction. Each of the claws 84 includes a protruding piece 840 protruding downward from a front end portion thereof. The protruding pieces 840 and 840 of the hooks 84 and 84 are hooked on the edge portions of the slits 27 and 27 of the body 10, respectively. Therefore, the cover 8 is further restricted from moving along the second end surface 2003 of the first side plate 21B in a direction crossing the sliding direction (for example, the vertical direction).

The cover 8A defines the left-right direction of the slit 27 so that the claw 84 becomes the first position when it comes into contact with the right end face in the slit 27 and the claw 84 becomes the second position when it comes into contact with the left end face in the slit 27. Of the size. In addition, the cover 8B defines the position of the slit 27 so that the claw 84 becomes the first position when it comes into contact with the left end face in the slit 27, and the claw 84 becomes the second position when it comes into contact with the right end face in the slit 27. Left and right dimensions. In short, each cover 8 limits the movable range in the left-right direction by the hook 84 and the slit 27.

As shown in FIG. 9, the first protruding portion 85 is provided on the first facing surface 810 of the main body portion 81 at one of two ends in the sliding direction. On the other hand, the second protruding portions 86 and 86 are provided on the first facing surface 810 of the main body portion 81 at the other end of the two ends. Both the first protruding portion 85 and the second protruding portions 86 and 86 protrude in a direction close to the first end surface 2001 of the top plate 20B. These protrusions come into contact with the first end surface 2001 to such an extent that they can slide over the first end surface 2001, or come close to the first end surface 2001 to an extent that they are not in contact.

The first protruding portion 85 of the cover 8A is provided at the left end of the first facing surface 810; the second protruding portions 86 and 86 are provided at the right end of the first facing surface 810. On the other hand, the first protruding portion 85 of the cover 8B is provided at the right end, and the second protruding portions 86 and 86 are provided at the left end of the first facing surface 810. In short, the cover 8A and the cover 8B are configured to be plane-symmetrical in the left-right direction (see FIG. 10).

The second protruding portions 86 and 86 of each cover 8 are provided at predetermined intervals in the front-rear direction. This predetermined interval is slightly larger than the size of the weir portion 23 in the front-rear direction. In short, the second protruding portions 86 and 86 are configured not to jam the weir portion 23 located around the second insertion opening 22 that is a target of the cover 8 when the cover 8 slides.

As shown in FIG. 9, the guide piece 87 protrudes downward from the first facing surface 810 of the main body portion 81. When viewed from one of the left and right directions, the guide piece 87 has a substantially rectangular plate shape. In this embodiment, the guide piece 87 is provided at the end of the first facing surface 810 near the side portion 82B of the side portions 82A and 82B (see FIG. 9). Therefore, the guide piece 87 of the cover 8A is disposed at the front end of the first facing surface 810, and the guide piece 87 of the cover 8B is disposed at the rear end of the first facing surface 810.

As shown in FIG. 7A, the guide pieces 87 and 87 are respectively fitted into the recesses 242 and 242 of the second case cover 2B extending in the sliding direction. Therefore, the cover 8 restricts movement along the first end surface 2001 of the top plate 20B in a direction crossing the sliding direction (for example, the front-rear direction) by the recess 242.

As shown in FIG. 9, the abutment piece 88 protrudes downward from the first facing surface 810 of the main body portion 81. The abutment piece 88 is provided at the center of the left-right direction and the front-rear direction of the first facing surface 810 of the main body portion 81. When viewed from one of the left and right directions, the contact piece 88 has a rectangular plate shape. The abutment piece 88 is inserted into the storage portion 241 so as to receive the elastic force from the elastic material 13 of the second case cover 2B stored in the storage portion 241.

The two elastic members 13 are, for example, helical coil springs. Each of the elastic members 13 imparts an elastic force in a direction that slides the cover 8 from the second position to the first position through the abutting piece 88 to the cover 8. Specifically, the cover 8A receives an elastic force to the right from the elastic material 13, and the cover 8B receives an elastic force to the left from the elastic material 13. Therefore, when the USB connector 7 is not used, as shown in FIGS. 7A and 7B, the covers 8A and 8B are maintained at the first position.

Here, the cover 8A and the cover 8B have one end portions, and face each other in the sliding direction. That is, the cover 8A and the cover 8B are attached to the device body 10 side by side in the left-right direction so that the right end of the cover 8A and the left end of the cover 8B face each other. In this embodiment, the right end portion of the cover 8A corresponds to the right end of the main body portion 81 and the pair of side portions 82; the left end portion of the cover 8B corresponds to the left end of the main body portion 81 and the pair of side portions 82. The cover 8A and the cover 8B are configured such that one cover 8 moves away from the other cover 8 when sliding from the first position to the second position, and the one cover 8 slides from the second position to the first position. Move to the other cover 8 when moving.

The cover 8A and the cover 8B are set at the first position, and the right end and the left end are opposite to each other so that the left and right dimensions of the slit 27 and the elasticity of the elastic material 13 are set. The cover 8A and the cover 8B are configured such that, when they are both located at the first position, viewed from one of the up and down directions, the right end portion and the left end portion are closed to each other along the groove 240 of the second case cover 2B (see FIG. 7A).

(2.4) Assembly sequence of case cover, case body, and cover The following is a brief description of the assembly sequence of the case cover 2 and the cover 8 with respect to the case body 3. However, the first substrate 11, the second substrate 12, the intermediate casing 4B, and the terminal block 5 are stored in the casing 3 in advance. The electric wires 61 to 63 of the power cord 6 are connected to the terminal block 5, and the front end portion of the sheath 60 is inserted into the second semicircular groove 320 of the casing body 3 (refer to FIG. 4). In addition, the three suction portions 9 are also respectively inserted into three storage recesses located on the bottom surface of the casing body 3. The assembling procedures (A) to (F) described below are only examples, and the assembling procedures may be performed in a different sequence from the following procedure.

(A) The assembly operator first inserts the elastic members 13 and 13 into the storage portions 241 and 241 of the case cover 2, respectively. At this time, the elastic material 13 is fitted so that the compression direction of the coil spring and the sliding direction (left-right direction) of the cover 8 coincide.

(B) The assembly operator attaches a cover 8A corresponding to the second insertion port 221 of the case cover 2 to the case cover 2. Specifically, the cover 8A is held so that the front end of the mark 80 of the cover 8A is leftward. Then, in a state where the right end of the left elastic material 13 is flexed to the left, the side portions 82, 82 are flexed slightly outward, and the cover 8A surrounds the first end face 2001 and the second end face of the housing cover 2. The method of 2003 is embedded in the housing cover 2, and the contact piece 88 of the cover 8A is inserted into the storage portion 241. At this time, as shown in FIG. 7B, the hook claw 84 of the cover 8A is inserted into the notch portion 270; as shown in FIG. 7A, the guide piece 87 of the cover 8A is also inserted into the recess 242.

A through hole is provided on the bottom surface of the storage portion 241, so that the front end of a tool such as a screwdriver can enter the through hole from the back side of the housing cover 2 to deflect the elastic material 13 to the left, from the front side of the housing cover 2. The contact piece 88 of the cover 8A is inserted. As soon as the deflection of the elastic material 13 is released, the elastic material 13 recovers its elasticity, and the right end of the elastic material 13 pushes the abutment piece 88 to the right, so the cover 8A is temporarily held on the case cover 2.

(C) Next, the assembly operator attaches the cover 8B corresponding to the second insertion port 222 of the case cover 2 to the case cover 2. Specifically, the cover 8B is held so that the front end of the mark 80 of the cover 8B faces right. Then, in a state where the left end of the right elastic material 13 is flexed to the right, the side portions 82, 82 are flexed slightly outward, and the cover 8B surrounds the first end face 2001 and the second end face of the case cover 2. The method of 2003 is embedded in the housing cover 2, and the contact piece 88 of the cover 8B is inserted into the storage portion 241. Similarly to the cover 8A, the hook claw 84 of the cover 8B is inserted into the cutout portion 270, and the guide piece 87 of the cover 8B is also inserted into the recess 242. As soon as the deflection of the elastic material 13 is released, the elastic material 13 recovers its elasticity and pushes its left end to the left of the abutment piece 88. Therefore, the cover 8B is temporarily held on the case cover 2.

(D) The assembly operator inserts the four middle case covers 4A into the four through holes 201 of the case cover 2 respectively. That is, the hook portions 204 and 204 located at the front and rear edges of the through holes 201 are inserted into the recess portions 42 and 42 of the middle case cover 4A, and the claws 204A of the hook portion 204 are hooked to the middle case cover 4A. As a result, the middle case cover 4A is attached to the case cover 2.

(E) The assembly operator holds the case cover 2 with the four intermediate case covers 4A and the cover covers 8A and 8B mounted on the case cover 2 so that the open bottom surface of the case cover 2 faces the open portion of the case body 3. Top. Then, the case cover 2 is inserted into the case body 3 so that the fitting projection 312 protruding from the top surface of the case body 3 and covering the entire edge portion is inserted into the case cover 2.

(F) Finally, the assembling operator inserts the five screws 103 through the through holes 304 of the hub portions 302, 303, 303, 310, and 311 from the back side of the casing body 3 and locks them in. As a result, the front ends of the five screws 103 enter the screw holes of the hub portions 203, 202, 202, 207, and 208 located on the housing cover 2 side. This completes the assembly of the casing body 3 and the casing cover 2.

(2.5) Installation and Removal of USB Plug In the following, reference is mainly made to FIGS. 10 to 14, and the installation and removal of the USB plug 102 to the desk socket 1 is explained. Here, for example, it is assumed that a user of a portable terminal such as a smart phone uses the desk socket 1 in order to charge a battery built in the portable terminal.

The user can selectively connect the USB plug 102 on the front end of the USB cable connected to the portable terminal to any one of the USB connectors 7A and 7B of the desk socket 1. For example, when the USB plug 102 is connected to the USB connector 7B located on the right side, as shown in FIG. 10, the user follows the direction (rightward) pointed by the front end of the triangular mark 80 of the cover 8B to Fingertips move cover 8B. In this way, with the cover 8B, the abutment piece 88 resists the elastic force of the elastic material 13 in the storage portion 241 to flex the elastic material 13 and slides to the right. At this time, the guide protrusions 83 and 83 of the cover 8B move to the right in the guide grooves 28 and 28, and the hooks 84 and 84 also move to the right in the slits 27 and 27. Similarly, the guide piece 87 of the cover 8B also moves to the right in the recess 242. If the cover 8B slides to the right to some extent, each of the claws 84 abuts against the right end face in the slit 27, so further movement of the cover 8B to the right is restricted.

In this state, the second insertion port 222 on the right side is exposed to the outside together with the weir portion 23. That is, the cover 8B is moved from the first position (covering the second insertion port 222) to the second position (exposing the second insertion port 222) (see FIG. 10).

The user keeps this state with his fingertips, and inserts the conductor 1020 (refer to FIG. 13) of the USB plug 102 into the second insertion port 222 as shown in FIG. 12, thereby electrically connecting the USB plug 102 and the USB connector 7B. connection. Then, when the user moves his fingertips away from the cover 8B, the elastic piece 13 restores the elasticity and pushes the abutment piece 88 of the cover 8B to the left, and the cover 8B moves to the left. However, the left end of the main body portion 81 of the cover 8B abuts against the metal portion 1030 (refer to FIG. 13) of the USB plug 102, so that the sliding of the cover 8B stops there. This completes the installation of the USB plug 102. At this time, the elastic force of the elastic material 13 should be set in such a manner that the cover 8B does not press the USB plug 102 too strongly.

Then, if the charging of the battery of the portable terminal is completed, the user slides the cover 8B to the right with his fingertips, and then pulls out the USB plug 102 from the second insertion port 222 and releases the cover 8B. . The cover 8B automatically returns to the original (covering the second insertion port 222) first position due to the elastic recovery of the elastic material 13.

Although the detailed description is omitted, when the user connects the USB plug 102 to the left USB connector 7A, as shown in FIG. 11 and FIG. 13, the front end of the triangular mark 80 along the cover 8A indicates To the left (to the left), move the cover 8A with your fingertips. Thereafter, the second insertion port 222 on the left side is exposed to the outside together with the weir portion 23, so the conductor 1020 of the USB plug 102 is inserted into the second insertion port 221, thereby electrically connecting the USB plug 102 to the USB connector 7A.

In addition, as a matter of course, as shown in FIG. 14, the user can simultaneously use the USB connectors 7A and 7B. For example, in a state where the USB plug 102 on the portable terminal side is connected to the USB connector 7A, the USB plug 102 on the other portable terminal side can be connected to the USB connector 7B.

(2.6) For foreign matter structure 1 and below, focus on the cover 8 and the body of the socket 1 for the table to prevent foreign matter (dust, liquids such as drinks, and food residues) from entering the second insertion port 22 The structure of 10 is explained.

First, when the cover 1 for the table is located at the first position, that is, the state covering the second insertion port 22, it is possible to prevent foreign matter from falling directly on the second insertion port 22. It should be noted that the cover 8 does not cover only the second insertion port 22 and the edge thereof. That is, the cover 8 is configured to cover both the first end surface 2001 of the top plate 20B provided with the second insertion opening 22 and the second end surface 2003 of the first side plates 21B and 21B. Therefore, intrusion of the foreign matter into the second insertion port 22 from the side (front-back direction) of the device body 10 is also suppressed.

Furthermore, the cover 8 includes a first protruding portion 85 (a protruding portion) at one end in the left-right direction, and a pair of second protruding portions 86 and 86 (a protruding portion) at the other end. Therefore, intrusion of foreign matter into the second insertion port 22 from the sliding direction (left-right direction) of the device body 10 is also suppressed. In particular, when the foreign matter is a liquid such as a beverage, if the liquid is poured on the body 10, it will easily flow on the first end surface 2001 of the top plate 20B and flow to the second insertion port 22, but the protrusions 85, 86, 86, and more In order to effectively suppress the penetration of liquid.

On the other hand, the device body 10 includes a weir portion 23 that protrudes upward from a region surrounding the second insertion opening 22 of the first end surface 2001. Therefore, even if the liquid penetrates the device body 10, it flows on the first end surface 2001 of the top plate 20B and flows to the second insertion port 22, and can still be blocked by the weir portion 23. In addition, since a groove 240 extending in the front-rear direction is provided between the second insertion ports 22 and 22, the liquid easily enters the groove 240 and flows in the groove 240 to overflow in the front-rear direction. In particular, when the cover 8A and the cover 8B are both in the first position, the groove 240 is disposed directly below the boundary where the right end portion and the left end portion are closed. Therefore, even if the liquid drips down from a small gap between the right end portion of the cover 8A and the left end portion of the cover 8B, the liquid is still received by the groove 240 located directly below it, which can suppress the liquid from entering the second insertion port 22 .

(2.7) Structure of Foreign Objects 2 and below, focusing on the socket 1 for desks, the internal structure of the body 10 of liquid (foreign body) such as beverages immersed in the body 10 will be described with reference to FIGS. The dotted arrows B1 to B4 in FIG. 15B simply indicate the flow of the liquid.

First, only the USB connector 7 and the display element 14 are mounted on the top surface of the first substrate 11. For example, a low DC voltage (a low-voltage side substrate) of about 5 V is supplied. Therefore, assuming that the liquid is drenched on the first substrate 11, it is still difficult to cause the contact failure of the USB connector 7, such as the damage of various electronic components, or the reduction of the reliability due to the decrease in insulation.

On the other hand, the second substrate 12 is supplied with AC power (for example, 100 V) for conversion to DC power from the terminal block 5 (high-power-side substrate). In addition, various electronic components 15 (see FIG. 15A) constituting a conversion circuit are mounted on the second substrate 12. Therefore, it is assumed that when the liquid is poured on the second substrate 12, various electronic components 15 are likely to be damaged, or insulation is deteriorated, which may reduce reliability.

On the other hand, in the present embodiment, first, the first substrate 11 and the second substrate 12 are not housed side by side in the container body 10 in the vertical direction, but are arranged along the first insertion port 21 and the second insertion port 22 Store side by side, that is, side by side in the left and right direction. Specifically, when the first substrate 11, the second substrate 12, and the terminal block 5 (the connecting portions 512, 522, and 532) are viewed from one of the vertical directions, the first substrate 11, the second substrate 12, and the terminal block are used. The order of 5 is arranged side by side in a row in the left-right direction and is housed in the container body 10. That is, only the first substrate 11 on which the USB connector 7 is mounted on the substrate directly below the second insertion port 22. Therefore, assuming that a liquid such as a beverage is immersed into the device body 10 (dotted line arrow B1) through the second insertion port 22, it is still possible to prevent the liquid from directly dripping onto the second substrate 12.

Further, in this embodiment, the first substrate 11 and the second substrate 12 are not simply stored side by side in the left-right direction, but the second substrate 12 is separated from the space in which the first substrate 11 is stored by the partition wall 17. . Therefore, as long as the liquid level is not soaked to a level exceeding the penetration opening 174 of the partition wall 17 (through which the wire 121 passes), the inflow of the liquid to the space side in which the second substrate 12 is housed can be suppressed.

In addition, the container body 10 of the present embodiment includes three pairs of drain ports 18 (a total of six drain ports), which are connected to the external space of the container body 10. Therefore, the liquid immersed in the body 10 can be discharged from the body 10.

In particular, the drainage openings (drain holes) 18C and 18C are arranged on the bottom plate (second wall portion) of the body 10 in the side-by-side direction of the first substrate 11 and the second substrate 12 when viewed from one of the up and down directions. The middle region of the first substrate 11 and the second substrate 12 on the opposite end side (right end portion). The liquid immersed in the device body 10 through the second insertion port 22 flows above the first substrate 11 and drops from the edge portion downward (dotted line arrow B2), and accumulates at the bottom of the device body 10. If the liquid accumulates to the bottom of the container 10 to a certain extent, and its water level exceeds the end surface (dotted arrow B3) of the protruding platform 37C located at the right end of the bottom of the container 10, the liquid is discharged from the drainage ports 18C, 18C (dotted arrow B4). Therefore, the inflow of the liquid into the space side in which the second substrate 12 is housed can be further suppressed.

In addition, the drainage openings 18B and 18B are arranged in a region between the second substrate 12 and the terminal block 5 in the bottom plate (second wall portion) of the body 10 when viewed from one of the vertical directions. Therefore, assuming that the liquid flows into the space side in which the second substrate 12 is housed, the liquid can still be discharged from the drainage ports 18B and 18B.

In this embodiment, as shown in FIG. 15A and FIG. 15B, each drain port 18 is not directly disposed on the bottom surface of the bottom plate 30B of the container 10, but is disposed in the storage recess 36 of the storage and adsorption portion 9. That is, the suction part 9 is arrange | positioned under each drainage port 18. Therefore, for example, it is possible to prevent the foreign matter such as a pin from entering the drainage port 18 by mistake by the suction section 9 and damage the electronic parts 15 and the like in the device body 10.

(3) Modifications Several modifications will be described below. The above-mentioned embodiment is hereinafter referred to as a "basic example". The modification examples described below can also be applied in appropriate combination with the above-mentioned basic examples.

In the basic example, the number of sockets that can be connected to the plug 101 of the power cord of an electric appliance or the like is four as an example. However, the number of slots is not particularly limited. In addition, in the basic example, the number of the USB connector 7 and the second insertion port 22 that can be connected to the USB plug 102 is two each as an example. However, this number is not particularly limited.

In the basic example, the covering target of one cover 8 is one second insertion port 22. However, the covering target of one cover 8 may be two or more second insertion ports 22. The number of the second insertion ports 22 is not particularly limited. That is, when the number of the second insertion ports 22 is one, the cover 8 may be one.

In the basic example, the groove 240 is formed by the first side walls (opposing walls) 233 and 233 of the two weir portions 23 facing each other. However, the groove 240 may be separated from the weir portion 23 and formed by recessing a part of the first end surface 2001 of the top plate 20B. However, as in the basic example, the groove 240 is formed by the weir portion 23, which makes it easier to manufacture the device body 10.

In the basic example, the covers 8A and 8B can slide independently of each other. However, the covers 8A and 8B can slide in conjunction with each other. However, as in the basic example, the covers 8A and 8B can slide independently of each other, which can further reduce the possibility of foreign matter intrusion.

In the basic example, the first substrate 11 is in contact with the second restricting protrusion 252, the third restricting protrusion 253, and the fourth restricting protrusion 254 of the second case cover 2B in the vertical direction. However, the first substrate 11 may be housed in the container 10 in a state in which the restricting ribs are slightly separated from each other.

In the basic example, the first substrate 11 is not in contact with the first reinforcing ridges 261 and the second reinforcing ridges 262 of the second case cover 2B in the vertical direction. However, the first substrate 11 may be stored in the container body 10 in a state of being in contact with the reinforcing ribs.

In the basic example, the second substrate 12 is in contact with the protruding ridge 255 of the second case cover 2B in the vertical direction. However, the second substrate 12 may be housed in the container 10 in a state of being slightly separated from the protruding ridges.

In the basic example, the protruding pieces 840 of the hooks 84 of the cover 8 protrude downward. However, the protruding piece 840 may also protrude upward.

(4) Advantages As described above, the first socket 1 for a table includes a body 10 having a first insertion opening 21 and a second insertion opening 22, a connection portion (512, 522, 532), a conductive portion, And connector (USB connector 7). The desk socket 1 includes a conversion circuit, a first substrate 11, and a second substrate 12. The connection portion is electrically connected to a conductor (a pair of bolt blades 101A and a ground terminal 101B) of a first plug (plug 101) inserted into the first insertion port 21. The conductive portion electrically connects the external power source to the connection portion, and supplies AC power received from the external power source to the conductor of the first plug. The connector is electrically connected to the conductor 1020 of the second plug (USB plug 102) inserted into the second insertion port 22. The conversion circuit converts AC power to DC power, and supplies the power to the conductor of the second plug through the connector. A connector is mounted on the first substrate 11. On the second substrate 12, electronic components 15 constituting a conversion circuit are mounted. The first substrate 11 and the second substrate 12 do not overlap each other when viewed from one of the insertion directions in which the conductor of the second plug is inserted, but are arranged side by side along the first insertion port 21 and the second insertion port 22 Stored side by side in the container body 10. According to the first aspect, it is possible to prevent the reliability from being lowered due to the foreign matter entering the body 10.

Regarding the socket 1 for a table of the second aspect, it is preferable that the AC input end of the conversion circuit is electrically connected to the connection part in the first aspect. According to the second aspect, the conversion circuit can generate DC power using the AC power supplied from the connection portion.

Regarding the third aspect of the socket 1 for the table, it is preferable that the first substrate 11, the second substrate 12, and the connection portion are stored in a row along the side by side in the following order in the first or second aspect.器 体 10 内。 The body 10. When viewed from one of the insertion directions, this order is the order of the first substrate 11, the second substrate 12, and the connection portion. According to the third aspect, the decrease in reliability can be prevented more effectively.

Regarding the fourth aspect of the socket 1 for a table, it is preferable to further include a display element 14 in any of the first aspect to the third aspect, and reflect the direct current to the conductor 1020 of the second plug (USB plug 102). Display power is emitted from the power supply state. The display element 14 is mounted on an end portion of the first substrate 11 opposite to the second substrate 12 in a side-by-side direction of the first substrate 11 and the second substrate 12. According to the fourth aspect, the display element 14 can be used to confirm the energization and determine whether there is a circuit abnormality on the substrate. In addition, since the display element 14 is mounted on the above-mentioned end portion, it is possible to suppress damage to the display element 14 caused by a foreign substance penetrating into the device body 10.

Regarding the fifth aspect of the socket 1 for a table, it is preferable that in any of the first to fourth aspects, the body 10 is the first in the side-by-side direction of the first substrate 11 and the second substrate 12 side by side. A partition wall 17 is provided between the substrate 11 and the second substrate 12. In a fifth aspect, the second substrate 12 is separated from the space in which the first substrate 11 is housed by the partition wall 17. Therefore, entry of foreign matter into the space side where the second substrate 12 is housed can be suppressed.

Regarding the socket 1 for table 6 in the sixth aspect, the body 10 in any of the first to fifth aspects is preferably provided with a limiting projection (251, 252, 253, 254, 371, 372, 373, 374). The restricting protrusions contact the first substrate 11 from at least one of the insertion directions, and the displacement of the first substrate 11 with respect to the insertion direction (up and down direction) is restricted. According to the sixth aspect, it is possible to suppress the displacement (looseness) of the first substrate 11 along the insertion direction in the body 10.

Regarding the socket 1 for a table of the seventh aspect, it is preferable that the body 10 includes a wall portion (top plate 20B) facing the first substrate 11 in any of the first to sixth aspects. The body 10 is provided with at least two second insertion openings in a wall portion. The wall portion includes a reinforcing ridge (first reinforcing ridge 261) protruding toward the first substrate 11. The reinforcing rib is provided between the two second insertion openings of the wall portion when viewed from one of the insertion directions. According to the seventh aspect, deformation of the wall portion of the body 10 accompanying the insertion and removal of the second plug (USB plug 102) can be suppressed.

Regarding the socket 1 for a table of the eighth aspect, the body 10 in any of the first to seventh aspects preferably includes a first wall portion (top plate 20A and top plate 20B) and a second wall. Parts (base plates 30A and 30B). A first insertion port 21 and a second insertion port 22 are formed in the first wall portion. The second wall portion faces the first wall portion via the first substrate 11 and the second substrate 12. The second wall portion includes a drainage port 18B that connects the external space of the body 10 and the internal space of the body 10. The drainage opening 18B is disposed in a region between the second substrate 12 and the connection portion in the second wall portion when viewed from one of the insertion directions. According to the eighth aspect, if the liquid (foreign matter) is immersed in the space side where the second substrate 12 is housed, the liquid can still be discharged from the drainage port 18B.

Regarding the socket 1 for a table of the ninth aspect, it is preferable that the body 10 includes the first wall portion (the top plate 20A and the top plate 20B) and the second wall portion in any one of the first to eighth aspects. (Bottom plates 30A and 30B). A first insertion port 21 and a second insertion port 22 are formed in the first wall portion. The second wall portion faces the first wall portion via the first substrate 11 and the second substrate 12. The second wall portion includes a drainage hole (drain port 18C) that connects the external space of the body 10 and the internal space of the body 10. The drainage hole is, when viewed from one of the insertion directions, an end of the first substrate 11 on the side opposite to the second substrate 12 in the side-by-side direction of the first substrate 11 and the second substrate 12 in the second wall portion. The area on the side. According to the ninth aspect, if liquid (foreign matter) is immersed in the second insertion port 22, the liquid can still be discharged through the drainage hole (drain port 18C), and the liquid can be prevented from flowing into the space side in which the second substrate 12 is housed.

1‧‧‧ socket for table

1A‧‧‧Block 1

1B‧‧‧Block 2

10‧‧‧ body

101‧‧‧plug

101A‧‧‧ bolt blade

101B‧‧‧ Ground Terminal

102‧‧‧USB plug (plug)

1020‧‧‧Conductor

103‧‧‧Screw

1030‧‧‧Metal parts

11‧‧‧ the first substrate

110‧‧‧through hole

111, 112‧‧‧ Depression

12‧‧‧ 2nd substrate

120, 121‧‧‧ Lead

13‧‧‧Elastic material

14‧‧‧Display element

15‧‧‧Electronic parts

16‧‧‧ Lampshade

17‧‧‧ partition

171A‧‧‧Part 1

171B‧‧‧Part 2

171, 172, 173‧‧‧ convex wall

174‧‧‧through

18, 18A, 18B, 18C‧‧‧‧Drain (drain hole)

2, 2A, 2B‧‧‧ Housing cover

20A, 20B‧‧‧Top plate

2001‧‧‧The first end face

2002‧‧‧ Underside

2003‧‧‧Second end face

201‧‧‧through hole

202, 203, 207, 208, 302, 303, 310, 311‧‧‧ hub

204‧‧‧Check Card Department

204A‧‧‧Claw

205‧‧‧Positioning wall

206‧‧‧The first receiving department

206A‧‧‧wall

206B‧‧‧Semicircle groove

21, 22, 221, 222‧‧‧ insertion openings

21A, 21B‧‧‧The first side plate

210‧‧‧ blade through hole

211‧‧‧Terminal insertion hole

22A, 22B‧‧‧ 2nd side plate

220‧‧‧The first semicircular ditch

23‧‧‧ weir

23B‧‧‧Link board

230‧‧‧ upper end

231‧‧‧front wall

232‧‧‧ rear wall

233‧‧‧The first side wall (opposing wall)

234‧‧‧ 2nd side wall

240‧‧‧ trench

241‧‧‧Storage Department

242‧‧‧Concave

243‧‧‧through hole

252A‧‧‧Dent

251, 252, 253, 254, 371, 372, 373, 374

255‧‧‧ protruding protrusion

261, 262‧‧‧ Reinforcement

27‧‧‧Slit

270‧‧‧ gap

28‧‧‧Guide trench

280‧‧‧ Recess

3, 3A, 3B‧‧‧ shell

30A, 30B‧‧‧ floor

304‧‧‧through hole

305‧‧‧Positioning cylinder

306‧‧‧ convex strip

307‧‧‧Detent

307A‧‧‧Claw

308‧‧‧The second receiving department

308A‧‧‧Upright

308B‧‧‧ Link

308C‧‧‧ protrusion

31A, 31B‧‧‧1st side plate

312‧‧‧fitting protrusion

32A, 32B‧‧‧ 2nd side plate

320‧‧‧The second semicircular groove

36, 36A, 36B, 36C‧‧‧Storage recess

360‧‧‧claw

361‧‧‧lock hole

37, 37A, 37B, 37C

371A, 374A‧‧‧ Support recess

371B, 374B‧‧‧Support tab

375‧‧‧Support convex strip

4A‧‧‧Mid shell cover

4B‧‧‧ Middle Shell

40‧‧‧Body

41‧‧‧ flange

42‧‧‧ Recess

5‧‧‧Terminal block

51‧‧‧The first terminal board

511‧‧‧ conductive section

512, 522, 532‧‧‧ Connection

513‧‧‧Fixing sheet

514‧‧‧ protruding piece

515‧‧‧screw

52‧‧‧ 2nd terminal board

521‧‧‧Conductive Section

522‧‧‧ Connection Department

523‧‧‧Fix

524‧‧‧ protruding piece

525‧‧‧screw

53‧‧‧3rd terminal board

531‧‧‧ grounding conductive part

532‧‧‧ Ground connection

533‧‧‧Fix

535‧‧‧screw

6‧‧‧Power cord

60‧‧‧Sheath

61, 62, 63‧‧‧ Electric wires

7, 7A, 7B‧‧‧USB connectors (connectors)

8, 8A, 8B‧‧‧ cover

80‧‧‧ logo

81‧‧‧Body

810‧‧‧First Opposite

82, 82A, 82B ‧‧‧ side

820‧‧‧ Opposite 2nd

83‧‧‧Guide

84‧‧‧ Hook

840‧‧‧ prominence

85‧‧‧ 1st protrusion (protrusion)

86‧‧‧The second protrusion (protrusion)

87‧‧‧ Guide

88‧‧‧ abutment

9, 9A, 9B, 9C‧‧‧ Adsorption Department

91‧‧‧permanent magnet

92‧‧‧Yoke

920‧‧‧ protrusion

[Fig. 1] An exploded perspective view of a socket for a table according to an embodiment of the present invention as viewed from above. [Fig. 2] A perspective view of the same socket for a table as seen from above. [Fig. 3] An exploded perspective view of the same socket for a table viewed from below. [Fig. 4] A plan view of a state in which the cover of the socket for a table is removed as described above. [Fig. 5] Fig. 5A is a top view of the housing body of the socket for a table as above; Fig. 5B is a cross-sectional view taken along the line AA of Fig. 5A. [Figure 6] is the bottom view of the cover of the same as above. [Fig. 7] Fig. 7A is a top view of the main part of the socket for the table above; Fig. 7B is a front view of the main part of the socket for the table above. [Fig. 8] Fig. 8A is a side view of the cover of the socket for the table above; Fig. 8B is a bottom view of the cover of the same. [Fig. 9] A perspective view of the same cover as viewed from below. [Fig. 10] A perspective view showing the main part of the socket for the table above, with only one cover at the second position. [Fig. 11] A perspective view showing the main part of the socket for the table above, when the covers of the two sides are in the second position. [Fig. 12] A perspective view showing the main part of the socket for the table above when the USB plug is inserted into one of the second insertion ports. [Fig. 13] A perspective view showing the main part of the socket for the table above when the USB plug is inserted into the second insertion port on the other side. [Fig. 14] A perspective view showing the main part of the socket for the table above when two USB plugs are inserted into the second insertion ports of both sides. [Fig. 15] Fig. 15A is a cross-sectional view taken along the line BB of Fig. 7A; Fig. 15B is an enlarged view of a main part of Fig. 15A.

Claims (9)

A socket for a desk includes: a device body having a first insertion port and a second insertion port; a connecting portion electrically connected to a conductor of a first plug inserted into the first insertion port; a conductive portion connecting an external power source and The connecting portion is electrically connected to supply the AC power received from the external power source to the conductor of the first plug; the connector is electrically connected to the conductor of the second plug inserted into the second insertion port; AC power is converted into DC power and supplied to the conductor of the second plug through the connector; the first substrate is mounted with the connector; and the second substrate is mounted with electronic components constituting the conversion circuit; the first substrate and When the second substrate is viewed from one of the insertion directions of the conductors of the second plug, the second substrates are not overlapped with each other, but are housed side by side along the side-by-side direction of the first and second insertion openings. The body. For example, the socket for a desk in the first scope of the patent application, wherein the AC input end of the conversion circuit is electrically connected to the connection part. For example, for a socket for a desk in the scope of patent application item 1 or 2, wherein the first substrate, the second substrate, and the connecting portion are viewed from one of the insertion directions, the first substrate, the second substrate The order of the substrate and the connecting portion is arranged side by side along the side-by-side direction and is housed in the device. For example, the socket for a desk for a patent application item 1 or 2 further includes a display element that emits display light according to the state of supply of the DC power to the conductor of the second plug; the display element is provided in the first The first substrate is mounted on an end portion on the side opposite to the second substrate in a side-by-side direction of the first substrate and the second substrate. For example, the socket for a desk for a patent application item 1 or 2, wherein the device body is provided between the first substrate and the second substrate in a side-by-side direction in which the first substrate and the second substrate are arranged side by side. Dividing wall. For example, the socket for a desk of claim 1 or 2, wherein the body is provided with a restricting protrusion that contacts the first substrate from at least one of the insertion directions, and restricts the insertion direction of the first substrate to the insertion direction. Of displacement. For example, the socket for a desk for a patent application item 1 or 2, wherein the device body includes a wall portion opposite to the first substrate; the device body includes at least two of the second inserts in the wall portion. The wall portion is provided with a reinforcing ridge protruding toward the first substrate; and the reinforcing ridge is provided between the two insertion openings of the wall portion when viewed from one of the insertion directions. For example, the socket for a table or desk in the scope of patent application No. 1 or 2, wherein the device body includes: a first wall portion formed with the first insertion opening and the second insertion opening; and a second wall portion separated by The first substrate and the second substrate are opposite to the first wall portion; the second wall portion is provided with a drain port connecting the external space of the device body and the internal space of the device body; the drain port, When viewed from one of the insertion directions, the second wall portion is disposed in a region between the second substrate and the connection portion. For example, the socket for a table or desk in the scope of patent application No. 1 or 2, wherein the device body includes: a first wall portion formed with the first insertion opening and the second insertion opening; and a second wall portion separated by The first substrate and the second substrate are opposed to the first wall portion; the second wall portion is provided with a drainage hole connecting the external space of the device body and the internal space of the device body; the drainage hole, When viewed from one of the insertion directions, the second wall portion is disposed in a side-by-side direction of the first substrate and the second substrate. End-side area ".