ES2842503T3 - Wall power supply socket provided with USB charging device - Google Patents

Abstract

A wall socket, comprising a panel (10), and a bottom cover (70) that is provided behind the panel (10); wherein the panel (10) provides a power slot (11) and two USB charging sockets (12); a housing space formed by the panel (10) and the bottom cover (70) provides a USB charging device, a metallic strip of live wire (51), a metallic strip of null wire (52) and a metallic strip of wire ground (53); The USB charging device further comprises two USB ports (61), and a USB charging circuit board (60) that is connected to the USB ports (61); the two USB ports (61) correspond to the two USB charging sockets (12) in terms of location, respectively; The feed slot (11) provides through holes respectively which are corresponding to the live wire metal strip (51), the null wire metal strip (52) and the ground wire metal strip (53) in terms of location and shape; characterized in that the center of the feed slot (11) deviates from the center of the panel (10) by 2-5 mm towards the lower end so that the live wire metal strip (51), the null wire metal strip (52) and the metallic ground wire strip (53) all move downward; The two USB charging sockets (12) are provided inclined at two upper corners of the panel (10) respectively, a USB holder (30) is provided on top of the metal strip of ground wire (53), which appear generally "II" shaped, and a passage (531) is provided in the contact portion of the metallic ground wire strip (53) and the USB holder (30) to make them fit together; The USB charging circuit board (60) comprises a first circuit board (601) and a second circuit board (602), which are connected to each other, two first circuit boards (601) are provided to connect the two USB ports (61) respectively, and are inclined at the two ends of the upper part of the USB holder (30), the second circuit board (602) provides a transformer (64), where the second circuit board (602 ) and the transformer (64) are located on top of the live wire metal strip (51) and the null wire metal strip (52); a contact position is provided between the external power supply and the metallic strip of live wire (51) on the rear side; and the USB charging socket (12) is provided above the power slot (11).

Description

DESCRIPTION

Wall power supply socket provided with USB charging device

Technical field

The present invention relates to a socket, and more particularly, to a wall socket with a USB charging device.

Background

For electrical safety, countries throughout the world set standards for power plugs. Many countries establish standards for the overall dimension of the single wall socket, and the dimension of the space reserved within the wall for its installation. In the European, French and German standard, the dimension of the middle panel of the single wall socket is 55 * 55mm; Inside the wall, always provide a cylinder with about 65mm diameter and 55mm deep to install the wall plug. In this case, only one power slot can be provided which is connected to connectors for each single wall socket, and the center of the wall socket almost coincides with the center of the middle panel.

With the growing popularity of mobile electronic devices today, charging is often required, and it is very inconvenient to carry power adapters at all times. Also, if you want to add a USB cage plug to a well-decorated wall, additional drilling and wiring would be required, which is also very inconvenient. Additionally, if it is desired to replace the existing wall socket with the USB charging socket, it would result in fewer power slots for connecting electrical appliances, which brings new problems for daily work and life. Document CN204668628U discloses a device according to the preamble of claim 1.

Summary

The present invention provides a wall socket with USB charging device, which solves the aforementioned problems under circumstances such as not changing the existing overall dimension of the wall socket, replacing or adding a prefabricated cylinder to install the wall socket, as well as reducing the existing number of power slots that are connected to connectors of the electrical appliance.

According to one aspect of the invention, it provides a wall socket with a USB charging device, according to claim 1.

With respect to the wall plug of the present invention, the center of the power slot is set offset 2-5mm from the center of the panel, reserving space on one side of the panel to provide the USB charging socket; In the housing space formed by the panel and the bottom cover, space is also reserved on the corresponding side of the USB charging socket to install the USB charging circuit board and the USB port, which denies modifications in external form of the plug wall socket after adding USB charging function, and makes it directly take the place of those wall sockets that provide only power slots for connecting external electrical appliance connectors. This enables a single wall socket to have both a USB charging function and a power supply function for the external electrical appliance, which better meets the needs of modern life.

The center of the feed slot of this invention deviates from the center of the panel by 2-5mm toward the bottom end; the USB charging socket is provided above the power slot. The power slot is off the center of the panel towards the bottom end, there is spare space at the top of the panel to provide the USB charging socket.

In some examples, two of the USB charging sockets of this invention are provided in the horizontal direction at two corners of the top of the panel respectively. The USB charging circuit board comprises the first circuit board and the second circuit board, wherein the first circuit board connects to the second L-shaped circuit board, the first circuit board is located in the flank inside the upper side of the lower cover, the second circuit board is located inside the rear face of the lower cover; the first circuit board appears in the shape of a U; Two of the USB ports are provided at the free end of the first circuit board respectively. Within the housing space formed by the panel and the bottom cover, the above-mentioned layout fully utilizes the space located by the live wire metal strip and the null wire metal strip, which is saved by diverting the center of the feed slot from the center of the panel to the bottom end, and the space on the back side of the metal strip of live wire and the metal strip of null wire, which means, it effectively uses the upper space and the rear side of the housing space formed by panel and bottom cover. The first circuit board appears in a U-shape, which can reserve space to install the metal strip of ground wire, where the top of the metal strip of ground wire is located inside the open end of the U-shape, which it is an efficient use of space.

In some examples, the second circuit board of the invention provides a transformer, a capacitor, a word inductor, a common mode inductor, an IC chip, a Y capacitor, and an X capacitor, the first circuit board provides a solid capacitor. These aforementioned electrical components can form a charging voltage stabilization filter circuit, which makes electronic devices safer during the charging process. Large electrical components are almost intensively installed on the second circuit board, effectively utilizing the space on the back side of the live wire metal strip and the null wire metal strip.

In some examples, the output of the USB charging port in this invention is 2100 mA and 4200 mA respectively. The output current of the USB port being large, it means fast charging.

Two of the USB charging sockets of this invention are angled at two corners of the top of the panel respectively; A USB bracket is provided on top of the metal ground wire strip, appearing as an "n" overall; a step is provided in the contact part of the metal strip of ground wire and the USB holder to make them adapt to each other; the USB charging circuit board comprises the first circuit board and the second circuit board, which are connected to each other; two of the first circuit board are connected to two of the USB ports respectively, and are inclined at the two ends of the upper part of the USB holder; The second circuit board provides the transformer, which is located on top of the live wire metal strip and the null wire metal strip. This layout sufficiently uses the space in the upper part of the housing space formed by the panel and the lower cover. The metallic strip of ground wire enables the conduction of electricity, as well as enables the connection between the USB holder and the bottom cover, which avoids too many components inside the wall socket. The pitch better stabilizes the relative position of the USB holder and the metal strip of ground wire.

In some embodiments, the first circuit board of the invention provides a locating through hole, and the USB holder provides a locating flange to match the locating through hole. This layout maintains the stabilized position of the USB port when connectors are inserted and connectors are removed.

In some embodiments, the present invention further comprises a front frame surrounding the exterior of the panel, wherein the front frame provides a baffle plate on the upper front frame. When an electronic device is being charged, it can be placed on top of the front frame, and the baffle plate should prevent it from slipping.

In some embodiments, the present invention further comprises a pad frame provided behind the panel. When the precast cylinder inside the wall to install the wall socket is not deep enough, the pad frame with suitable thickness can be added behind the panel, pushing the panel forward, to suit the depth of the cylinder inside the wall. .

In some embodiments, the center of the feed slot of this invention deviates from the center of the panel by 3-3.5mm toward the bottom end.

Brief description of the drawings

Figure 1 is a front view structural schematic diagram of a wall socket not in accordance with one embodiment of the present invention;

Figure 2 is a three-dimensional structural schematic diagram of the wall socket according to Figure 1;

Figure 3 is a structural schematic diagram of the state of decomposition of the wall plug according to Figure 1;

Figure 4 is an interior structural schematic diagram of the wall plug according to Figure 1; Figure 5 is a structural schematic diagram of the wall plug according to Figure 1 adding a pad frame;

Figure 6 is a front view structural schematic diagram of a wall socket in accordance with the present invention;

Figure 7 is a three-dimensional structural schematic diagram of the wall socket according to Figure 6;

Figure 8 is a structural schematic diagram of the state of decomposition of the wall plug according to Figure 6;

Figure 9 is a structural schematic diagram of a live wire metal strip according to prior art;

Figure 10 is a structural schematic diagram of a metal strip of null wire according to prior art;

Figure 11 is a structural schematic diagram of a live wire metal strip of the wall socket according to Figure 6;

Figure 12 is a structural schematic diagram of a wall socket not in accordance with one embodiment additional of the present invention;

Figure 13 is a structural schematic diagram of a wall socket not in accordance with a further embodiment of the present invention;

Figure 14 is a structural schematic diagram of the wall plug according to Figure 6 adding a front frame;

Detailed description

The invention is further described for details with reference to the drawings hereinafter.

Figure 1 to Figure 4 schematically show the structure of a wall socket with the USB charging device not according to an embodiment of the present invention.

As shown in Figure 1 to Figure 4, the wall plug is of European standards, comprising a panel 10, and a bottom cover 70 that is provided behind panel 10. The length and width of panel 10 are both 55mm, the length and width of the bottom cover 70 are both 46.5mm. The wall plug can be inserted into a wall to a depth of 50mm. A mounting frame 20 is provided behind panel 10. As shown in Figure 1 and Figure 2, panel 10 provides a power slot 11 for connecting electrical connectors and two USB charging sockets 12. Line aa is the horizontal midline of panel 10, line bb is the horizontal midline of feed slot 11. A distance D between line aa and line bb is 3mm. The two USB charging sockets 12 are provided above the power slot 11, locating the upper corners of the panel 10.

As shown in Figure 3 and Figure 4, an adaptation space formed by the panel 10 and the bottom cover 70 is provided with a USB charging device, as well as a metallic strip of live wire 51, a metallic strip of wire null 52 and a metallic strip of ground wire 53. The USB charging device further comprises a USB charging circuit board and two USB ports 61. The two USB ports 61 correspond to the location of the two USB charging sockets 12 of the panel 10 respectively.

The USB charging circuit board comprises a first circuit board 601 and a second circuit board 602. The first circuit board 601 connects to the second circuit board 602 which appears in an L shape. As shown in Figure 4, the first circuit board 601 is located on the flank inside the upper side of the lower cover 70, the second circuit board 602 is located inside the rear face of the lower cover 70. As shown in Figure 3, the first circuit board 601 appears U-shaped. The two USB ports 61 are provided at the two free ends of the first circuit board 601 respectively.

The second circuit board 602 provides an IC chip 69, a transformer 64, two capacitors 68, a word inductor 67, a common mode inductor 66, a Y capacitor 62, and an X capacitor 65; The first circuit board 601 provides two solid capacitors 63. The live wire metal strip 51, the null wire metal strip 52, and the ground wire metal strip 53 are all installed in a bracket 40. The feed slot 11 is provided with through holes respectively that are corresponding to the live wire metal strip 51, the null wire metal strip 52 and the ground wire metal strip 53 in terms of location and shape.

Given the reason that the center of the feed slot 11 deviates from the center of the panel 10 towards the bottom end, the metallic strip of live wire 51, the metallic strip of null wire 52 and the metallic strip of ground wire 53 all move downward, thus saving space above live wire metal strip 51, null wire metal strip 52, and ground wire metal strip 53. This layout efficiently uses space on the upper side and the rear side of the housing space formed by the panel 10 and the lower cover 70. The first circuit board 601 appears in the shape of a U, which can reserve space to install the metal strip of ground wire 53, where the upper part of the metal strip of ground wire 53 is located inside the U-shaped open end of the first circuit board 601, and therefore uses space efficiently. In this example the center of the power slot 11 of the wall socket deviates from the center of the panel 10 by 3 mm, reserving space to install the USB charging device within the housing space formed by the panel 10 and the bottom cover 70 , and therefore the external shape of the wall plug is not modified after adding USB charging function, which makes the wall plug directly take the place of these wall plugs that provide only power slots for connecting electrical plugs of external devices. This enables the wall socket to have both a USB charging function and a power supply function for the external electrical appliance, which better meets the needs of modern life.

In other examples the center of the feed slot 11 can be deviated from the center of the panel 10 towards the lower end or towards one of the corners according to need, where the offset distance D can be 2-5 mm. The number of USB charging sockets 12 can be 1 or 3 and so on. The USB charging sockets 12 can be provided in a horizontal direction, or be tilted from different angles.

The bottom cover 70 appears L-shaped, and is connected to the bracket 40 by a screw. The bottom cover 70 provides an installation location bar 72 to conveniently install and stabilize the first circuit board 601. The four corners of the bottom cover 70 are provided as rounded, making it easy to rotate and adjust the installation angle when installing the Wall plug. The bottom cover provides a radiation window 71 to help radiate heat.

A protection device against incorrect connectors is provided between the feed slot 11 and the metallic strip of live wire 51 as well as the metallic strip of null wire 52.

Panel 10 is connected to bracket 40 by a screw. The screw passes through the wrong connector protection device 90 and the metal strip of ground wire 53.

In this example the output from USB port 61 is 2100 mA and 4200 mA respectively. Compared to electrical components with small output current from USB port 61, IC chip 69, transformer 64, two capacitors 68, word inductor 67, common mode inductor 66, Y capacitor 62 and capacitor X 65, in this embodiment, are larger in terms of size and power, and the distance between a high-voltage circuit and a low-voltage circuit is more than 6mm. Therefore, in this embodiment, the internal structure of the wall plug needs to be better arranged to provide enough space for these electrical components. As shown in Figure 5, if the precast cylinder inside the wall for installing the electrical wall outlet is not deep enough, which causes the wall socket panel 10 to protrude too far from a wall and the surface of rear side of panel 10 cannot come into contact with the wall surface, a pad frame 80 can be added between panel 10 and mounting frame 20 to fill the gap between panel 10 and wall, to adapt the depth of the precast cylinder inside the wall.

From Figure 6 to Figure 8 schematically show the structure of a wall socket with USB charging device according to another embodiment of the present invention.

As shown in Figure 6 and Figure 7, the wall plug is of European standards, comprising a panel 10, and a bottom cover 70 that is provided behind panel 10. The length and width of panel 10 are both 55mm, and the bottom deck 70 is of a maximum height of 50mm and width of 52mm. The wall plug can be inserted into a wall at a depth of 38mm. A mounting frame 20 is provided behind panel 10. Panel 10 provides a power slot 11 for connecting electrical connectors and two USB charging sockets 12. The two USB charging sockets 12 are located at two corners of panel 10 respectively, leaning at 45 degrees.

Line aa is the horizontal midline of panel 10, line bb is the horizontal midline of feed slot 11. The distance D between line aa and line bb is 3.5mm.

The housing space formed between the panel 10 and the bottom cover 70 provides the USB charging device, the metallic strip of live wire 51, the metallic strip of null wire 52 and the metallic strip of ground wire 53. The charging device USB comprises the USB charging circuit board and two USB ports 61. The two USB ports 61 correspond to the location of the two USB charging sockets 12 of the panel 10 respectively.

Given the reason that the center of the feed slot 11 deviates from the center of the panel 10 towards the bottom end, the metallic strip of live wire 51, the metallic strip of null wire 52 and the metallic strip of ground wire 53 they all move down, thus saving space above the live wire metal strip 51, the null wire metal strip 52, and the ground wire metal strip 53.

As shown in Figure 8, a USB holder 30 is provided on top of the metallic ground wire strip 53, appearing in the general "n" shape. A passage 31 is provided in the contact part of the metal ground wire strip 53 and the USB holder 30 to make them fit together. Step 31 better stabilizes the relative position of the USB holder 30 and the metallic ground wire strip 53. The metallic ground wire strip 53 enables the conduction of electricity, as well as enables the restriction of movement to the USB holder 30, and thus avoid too many components inside the wall socket.

Two through holes 32 are provided in the USB holder 30, to allow the live wire rod and the null wire rod of the electrical connector to pass through. The protection device against incorrect connectors is provided between the feed slot 11 and the metallic strip of live wire 51 as well as the metallic strip of null wire 52.

Figure 9 shows schematically the structure of a metallic strip of ground wire according to the prior techniques. The two ends of this metal strip of null wire are almost the same in shape as that disclosed in this embodiment, and with a flat middle portion. Adaptive modifications to the structure are made to the metallic null wire strip 53 in this embodiment.

The USB charging circuit board comprises the first circuit board 601 and the second circuit board 602, which are connected to each other. Two of the first circuit board 601 are connected to two of the USB ports 61 respectively, tilting at 45 degrees at two upper corners of the USB holder 30. The second circuit board 602 provides the transformer 64 and other electrical components, and the Second circuit board 602 and transformer 64 are located on top of live wire metallic strip 51 and null wire metallic strip 52.

This layout effectively utilizes the top and rear side space of the housing space formed by the panel 10 and the bottom cover 70. In this embodiment, the center of the feed slot 11 deviates from the center of the panel 10 by 3, 5 mm, reserving space to install the USB charging device in the housing space formed by the panel 10 and the bottom cover 70, and therefore the external shape of the wall plug is not modified after adding the USB charging function , which makes the wall plug directly take the place of those wall plugs that provide only power slots 11 for connecting electrical connectors of external devices. This enables the wall socket to have both a USB charging function and a power supply function for external electrical appliances, which better meet the needs of modern life.

The first circuit board 601 provides a locating through hole, and the USB holder 30 provides a locating flange 31 to accommodate the locating through hole. This layout maintains the stabilized position of the USB port 61 when connectors are inserted and removed. In this embodiment, the locating flange 61 is a quadrangular prism sized at 8 * 8 * 4mm. In other embodiments, the locating flange can be modified to a triangular prism, an elliptical cylinder, or other shape according to needs, and other specifications.

An installation frame 20 is provided behind the panel 10, wherein the installation frame 20 provides a retention groove 21 at its widest top. The USB holder 30 provides a buckle 31 within its wider top, which conforms to the retention groove 21. This arrangement better stabilizes the position of the USB holder 30.

The inner frame dimension of the installation frame 20 is 51 * 51mm, which prevents the USB port 61 and panel 10 from sinking inward.

The metallic ground wire strip 53 is connected to the lower cover 70 in a fixed manner. An internal thread is provided on the metallic null wire strip 53 at the location corresponding to the center of the feed slot 11; A through hole 13 is provided in the center of the feed slot 11. Therefore, the panel 10 and the metal strip of null wire 53 can be connected by a screw that adapts the internal thread, to conveniently install and uninstall the panel 10 to check the inside of the plug.

Figure 10 schematically shows the structure of a live wire metal strip or a null wire metal strip according to the prior techniques. As shown in Figure 10, a contact point 55 is formed in the metallic strip of live wire 51 to connect external electrical connectors by two curved parts that deform together. The metallic strip of live wire in the prior art is approximately twice the height of the contact point 55.

In this embodiment, to reserve more space for the USB charging device in the housing space formed by the panel 10 and the bottom cover 70, the height of the live wire metal strip 51 is reduced, furthermore, the position of Contact between external power and live wire metal strip 51 on the rear side, as shown in Figure 11. This structure is also suitable for null wire metal strip 52.

The structure of this embodiment can also be used for the plug in French, German and other standards, only corresponding modifications are necessary for the specification of the plug sockets.

As shown in Figure 12, the four corners of panel 10 can be rounded, to meet the needs of users.

Figure 13 schematically shows the structure of a wall socket made suitable for French standards. As shown in Figure 13, the metal strip of null wire 53 is modified to protrude in the shape of a cylinder.

In the wall socket of the present invention, a front frame 14 may be provided that surrounds the exterior of the panel 10, wherein the front frame 14 provides a baffle plate 141 on the upper front frame. When an electronic device is being charged, it can be placed on top of the front frame 14, and the baffle plate 141 should prevent it from slipping. The structure of the front frame 14 is shown in Figure 14.

Claims (5)

1. A wall socket, comprising a panel (10), and a bottom cover (70) that is provided behind the panel (10); wherein the panel (10) provides a power slot (11) and two USB charging sockets (12); a housing space formed by the panel (10) and the bottom cover (70) provides a USB charging device, a metallic strip of live wire (51), a metallic strip of null wire (52) and a metallic strip of wire ground (53); The USB charging device further comprises two USB ports (61), and a USB charging circuit board (60) that is connected to the USB ports (61); the two USB ports (61) correspond to the two USB charging sockets (12) in terms of location, respectively; The feed slot (11) provides through holes respectively which are corresponding to the live wire metal strip (51), the null wire metal strip (52) and the ground wire metal strip (53) in terms of location and shape; characterized in that the center of the feed slot (11) deviates from the center of the panel (10) by 2-5 mm towards the lower end so that the live wire metal strip (51), the null wire metal strip (52) and the metallic ground wire strip (53) all move downward; The two USB charging sockets (12) are provided inclined at two upper corners of the panel (10) respectively, a u Sb support (30) is provided on top of the metal strip of ground wire (53), which they appear in the form of "II" in general, and a passage (531) is provided in the contact part of the metallic strip of ground wire (53) and the USB holder (30) to make them conform to each other; The USB charging circuit board (60) comprises a first circuit board (601) and a second circuit board (602), which are connected to each other, two first circuit boards (601) are provided to connect the two USB ports (61) respectively, and are inclined at the two ends of the upper part of the USB holder (30), the second circuit board (602) provides a transformer (64), where the second circuit board (602 ) and the transformer (64) are located on top of the live wire metal strip (51) and the null wire metal strip (52); a contact position is provided between the external power supply and the metallic strip of live wire (51) on the rear side; Y The USB charging socket (12) is provided above the power slot (11). The wall socket according to claim 1, wherein the first circuit board (601) provides a locating through hole, and the USB holder (30) provides a locating tab (301) to match the through hole location. The wall socket according to claim 1-2, further comprising a front frame (14) provided surrounding the exterior of the panel (10), wherein the front frame (14) provides a baffle plate (141) at the upper fontal frame. The wall socket according to claim 1-2, further comprising a pad frame (80) provided behind the panel (10). The wall socket according to claim 1-2, wherein the center of the feed slot (11) deviates from the center of the panel (10) by 3-3.5 mm towards the lower end.