Patent Publication Number: US-2023163543-A1

Title: Replaceable Socket Device and Adapter

Description:
CROSS REFERENCE TO RELATED APPLICATION 
     This application claims priority to U.S. provisional Application No. 63/281,784, filed on Nov. 22, 2021. The entire disclosure of the above application is incorporated herein by reference. 
    
    
     FIELD OF THE INVENTION 
     The present disclosure relates to a replaceable socket device and an adapter, more particularly, to a modular replaceable socket device and an adapter which are suitable for various interfaces. 
     BACKGROUND 
     The sockets for domestic and commercial electricity are generally categorized into types utilized in 110-120V or 220-240V. The 110V-120V socket is further divided into a two-hole type and a three-hole type. Therefore, the type of the sockets has to be chosen in advance before installing or purchasing sockets. For example, the three-hole type sockets utilized to 220-240V should be installed nearby where the air-conditioner will be set, and the two-hope type or the three-hole type sockets utilized in 110-120V should be installed nearby where the electronic appliances will be set. In addition, not only should the voltage should be considered, the types of sockets should be noted as well in case, for example, the three-pin plug will not fit the two-hole sockets. Furthermore, the plugs have to be inserted in specific direction, in this situation, the power cable will be curved and the insulation layer of the power cable may rupture, resulting in leakage of electricity or a short circuit. 
     The electronic appliances which are purchased overseas cannot be used anymore since the sockets do not fit the plugs. Although there are adapters available on the markets, however, it&#39;s inconvenient to attach an adapter on the plug, and occupy more space and sometimes cause danger due to the low-quality of the adapters. 
     Generally speaking, the household alternating current (AC) power line has a polarity, and the general power socket has a power protection switch, which is usually set on a charged electrode. Therefore, whether it is a commercially available adapter or an external transformer, to ensure the normal operation of the power protection switch, it is necessary to ensure that the polarity of the socket is consistent with the adapter. For example, the general socket usually takes a wide contact as the neutral line to avoid affecting the safety of power consumption. When in use, the socket and the inserting hole need to be in the same direction, so the socket can be inserted. However, if the position of the electrical appliance cannot be changed, the power line needs to be bent to match the direction of the socket. In this way, it is easy to damage the insulation layer of the power line, thereby causing electric leakage or short circuit easily. 
     Furthermore, the Power Line Communication (PLC) technologies allow the network data to be transmitted by the power cables. The PLC technologies requires modems installed on sockets or network bridge with PLC functions, however it&#39;s inconvenient to attach an adapter on the plug, and occupy more space as well. 
     SUMMARY 
     To solve the above problem, the present disclosure provides a modular replaceable socket device and an adapter. The replaceable socket device is capable of selecting the required adapting element and installing it on the adapter according to the different requirements of specification and type. In addition, the adapting element and the adapter of the present disclosure respectively have a fool-proofing structure, which is helpful to improve the user experience and power safety. Furthermore, the adapting element can adjust the direction according to the position and the space of the electrical appliance while ensuring the safety of power consumption, and a safety device can also be added to the replaceable socket device, which can not only save the trouble of using additional adapter or external transformer but also have beauty and safety at the same time. 
     According to a first aspect of the present disclosure, a replaceable socket device includes at least one adapting element and an adapter. Each of the at least one adapting element comprises a first polarity terminal having a first polarity, a second polarity terminal having a second polarity, and a third polarity terminal having a third polarity. The adapter comprises at least one adapter interface, a first polarity adapting member, a second polarity adapting member, and a third polarity adapting member. The adapter interface is used to engage with the at least one adapting element, and at least one first polarity interface, at least one second polarity interface, and a third polarity interface are disposed in each of the at least one adapter interface. The first polarity adapting member is electrically connected to the at least one first polarity interface. The second polarity adapting member is electrically connected to the at least one second polarity interface. The third polarity adapting member is electrically connected to the third polarity interface. When the at least one adapting element and the at least one adapter interface are engaged with each other, the first polarity terminal is electrically connected to the at least one first polarity interface, the second polarity terminal is electrically connected to the at least one second polarity interface, and the third polarity terminal is electrically connected to the third polarity interface. 
     According to a second aspect of the present disclosure, an adapter adapted to at least one replaceable adapting element, includes at least one adapter interface, a first polarity adapting member, a second polarity adapting member, and a third polarity adapting member. The at least one adapter interface is engaged with the at least one adapting element. Each of the at least one adapter interface includes a first polarity interface, a second polarity interface, and a third polarity interface. The first polarity adapting member is electrically connected to the at least one first polarity interface. The second polarity adapting member is electrically connected to the at least one second polarity interface. The third polarity adapting member is electrically connected to the third polarity interface. When the at least one adapting element and the at least one adapter interface are engaged with each other, the at least one adapting element is electrically connected to the at least one adapter interface. 
     Compared with the prior art, the replaceable socket device and the adapter of the present disclosure can replace the adapting element according to the requirement, or change the installation direction according to the use situation. In addition, the adapter can also have different shapes for a user to choose from. The detachable adapter cable of the cable interface can also be pulled out when not in use, which facilitates the overall storage of the replaceable socket device and reduces the occupation of space. Furthermore, due to the assemblies being modular, the user can select only the needed part or choose to purchase only the damaged part, so that the cost can be reduced during manufacturing, and the user can also reduce the cost during purchase. Therefore, the replaceable socket device and the adapter of the present disclosure have the advantages of power safety, beauty, space-saving, and cost-effectiveness. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       To describe the technical solutions in the embodiments of this application more clearly, the following briefly introduces the accompanying drawings required for describing the embodiments. Apparently, the accompanying drawings in the following description show merely some embodiments of this application, and a person of ordinary skill in the art may still derive other drawings from these accompanying drawings without creative efforts. 
         FIGS.  1  to  4    are schematic diagrams of a replaceable socket device according to one embodiment of the present disclosure. 
         FIG.  5    is a three-dimensional schematic diagram of a perspective of an adapting element and an adapter according to first embodiment of the present disclosure. 
         FIG.  6    is a three-dimensional schematic diagram of another perspective of the adapting element and the adapter according to first embodiment of the present disclosure. 
         FIG.  7    is a three-dimensional schematic diagram of a perspective of an adapting element and an adapter according to second embodiment of the present disclosure. 
         FIG.  8    is a three-dimensional schematic diagram of another perspective of the adapting element and the adapter according to second embodiment of the present disclosure. 
         FIG.  9    is a three-dimensional schematic diagram of a perspective of an adapting element and an adapter according to third embodiment of the present disclosure. 
         FIG.  10    is a three-dimensional schematic diagram of another perspective of the adapting element and the adapter according to third embodiment of the present disclosure. 
         FIG.  11    is a three-dimensional schematic diagram of a perspective of an adapting element and an adapter according to fourth embodiment of the present disclosure. 
         FIG.  12    is a three-dimensional schematic diagram of another perspective of the adapting element and the adapter according to fourth embodiment of the present disclosure. 
         FIG.  13    is a three-dimensional schematic diagram of a first fool-proofing structure of the adapting element and a second fool-proofing structure of the adapter according to first embodiment of the present disclosure. 
         FIG.  14    is a three-dimensional schematic diagram of a first fool-proofing structure of the adapting element and a second fool-proofing structure of the adapter according to second embodiment of the present disclosure. 
         FIG.  15    is a three-dimensional schematic diagram of a first fool-proofing structure of the adapting element and a second fool-proofing structure of the adapter according to third embodiment of the present disclosure. 
         FIG.  16    is a three-dimensional schematic diagram of a first fool-proofing structure of the adapting element and a second fool-proofing structure of the adapter according to fourth embodiment of the present disclosure. 
         FIG.  17    is a three-dimensional schematic diagram of a first fool-proofing structure of the adapting element and a second fool-proofing structure of the adapter according to fifth embodiment of the present disclosure. 
         FIG.  18    is a top view of a power socket of the replaceable socket device according to one embodiment of the present disclosure. 
         FIG.  19    is a top view of a female interface of the replaceable socket device according to one embodiment of the present disclosure. 
     
    
    
     DESCRIPTION OF THE EMBODIMENTS 
     In order to facilitate understanding the technical features, content and advantages of the invention and the efficacy it can achieve, the present disclosure is hereby combined with the accompanying drawings, and the expression of the embodiment is described in detail as follows, and the scheme used therein, the main purpose of which is only for illustrative and auxiliary explanation purposes, may not be the true proportion and precise configuration of the embodiment of the present disclosure, so the proportion and configuration relationship of the attached drawing should not be interpreted, limiting the scope of rights of the invention in the actual implementation. 
     Spatially relative terms, such as “beneath”, “below”, “lower”, “above”, “upper” and the like, may be used herein for ease of description to describe one element or feature&#39;s relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. 
     The following will refer to the relevant drawings, illustrating various embodiments of the replaceable socket device according to the present disclosure, for ease of understanding, the same components in the following embodiments are illustrated by the same symbols. 
     Please refer to  FIGS.  1  to  4   ,  FIGS.  1  to  4    are schematic diagrams of a replaceable socket device  10  according to one embodiment of the present disclosure. The replaceable socket device  10  comprises at least one adapting element  20 , an adapter  30 , and a cable interface  32 . In other embodiments, the adapting element  20  can also be multiple. In addition, the replaceable socket device  10  and its assemblies can also be modular, thereby replacing easily. The cable interface  32  can be electrically connected to the socket of the indoor power supply to receive the AC of the indoor power supply. The cable interface  32  may be a detachable cable interface, which can be separated from the adapter  30  when it is not in use. The other end of the cable interface  32  may be a power plug of general electric supply 110 V to 120 V or 220 V to 240 V, or a power plug conforming to different specifications, such as type A power plug, type B power plug, type C power plug, type D power plug, type E power plug, type F power plug, type G power plug, type H power plug, type I power plug, type J power plug, type K power plug, and type L power plug. The adapter  30  can have different shapes. As shown in  FIGS.  2  to  4   , the adapter  30  may be shaped as a common long strip, or a square, a ring, a triangle, and other shapes. While the adapter assemblies  20  located on the adapter  30  can be a matrix arrangement in the same direction as shown in  FIG.  2   , or a circular permutation in different directions as shown in  FIGS.  3  and  4   . The shape of the adapter  30  and the arrangement of the adapter assemblies  20  in  FIGS.  2  to  4    are only examples and are not used to limit the present disclosure. Any of the shape of adapter  30  and the arrangement of adapter assemblies  20  (such as the array arrangement of adapter assemblies on a triangular adapter) are within the scope of the present disclosure. 
     In addition, the adapter  30  can have one or more switches. As shown in  FIGS.  1  and  5   , the adapter  30  comprises at least one adapter interface  34  and a switch  320  arranged next to and pair with each of the at least one adapter interface  34  to control whether the power supply of the adapter interface  34  is turned on. In one embodiment, the adapter interface  34  may be a socket, a recessed storage space, or other adapter interface suitable for engagement with the adapting element  20 , and the present disclosure is not limited thereto. The adapter  30  may also be arranged with a main switch  310  to control whether the power supply of all adapter interfaces  34  on the adapter  30  is turned on. The main switch  310  and the sub switch  320  can be set with a load control. When the load is exceeded, it will automatically switch off and turn it into an open circuit. 
     The Embodiments of an Adapting Element and an Adapter 
     In the following description, for ease of understanding, the icons in the following embodiments, such as the cable interface  32 , the main switch  310 , and the sub switch  320  are omitted. Please refer to  FIGS.  1 ,  5 , and  6    together.  FIG.  5    is a three-dimensional schematic diagram of a perspective of an adapting element  20  and an adapter  30  according to first embodiment of the present disclosure.  FIG.  6    is a three-dimensional schematic diagram of another perspective of the adapting element  20  and the adapter  30  according to first embodiment of the present disclosure. In the first embodiment, one top surface of the adapting element  20  of the replaceable socket device  10  of the present disclosure is provided with a female interface  22 , which can be inserted by the plug of an electronic device to obtain power supply. The adapting element  20  comprises a first polarity terminal  201 , a second polarity terminal  202 , and a third polarity terminal  203 . The first polarity terminal  201  has a first polarity, the second polarity terminal  202  has a second polarity, and the third polarity terminal  203  has a third polarity. The adapter  30  comprises the at least one adapter interface  34  and at least one first polarity interface  301 , at least one second polarity interface  303 , and a third polarity interface  305 , which are disposed in the at least one adapter interface  34 . The at least one adapter interface  34  is used to engage with the at least one adapting element  20 . When the at least one adapter  34  and the at least one adapting element  20  are engaged with each other, the at least one adapting element  20  is electrically connected to the at least one adapter  34 . The at least one first polarity interface  301  corresponds to the first polarity terminal  201  and has the first polarity, the at least one second polarity interface  303  corresponds to the second polarity terminal  202  and has the second polarity, and the third polarity interface  305  corresponds to the third polarity terminal  203  and has the third polarity. In one embodiment, the number of the at least one adapter interface  34  is a plural number, and the number of the at least one first polarity interface  301  and the at least one second polarity interface  303  are respectively two, but the present disclosure is not limited thereto. 
     The adapter  30  further comprises a first polarity adapting member  302 , a second polarity adapting member  304 , and a third polarity adapting member  306 . The first polarity adapting member  302  is electrically connected to the at least one first polarity interface  301 , the second polarity adapting member  304  is electrically connected to the at least one second polarity interface  303 , and the third polarity adapting member  306  is electrically connected to the third polarity interface  305 . When the at least one adapting element  20  and the at least one adapter interface  34  are engaged with each other, the first polarity terminal  201  is electrically connected to the at least one first polarity interface  301 , the second polarity terminal  202  is electrically connected to the at least one second polarity interface  303 , and the third polarity terminal  203  is electrically connected to the at least one third polarity interface  305 . That is, while in use, when the plug of the electronic device is inserted into the female interface  22 , and then the adapting element  20  is inserted into the adapter interface  34 , so that the first polarity terminal  201 , the second polarity terminal  202 , and the third polarity terminal  203  are in contact with the first polarity adapting member  302 , the second polarity adapting member  304 , and the third polarity adapting member  306 , respectively. The electronic device is electrically connected to the first polarity adapting member  302  through the at least one first polarity interface  301  through the first polarity terminal  201  of the adapting element  20 , the second polarity adapting member  304  through the at least one second polarity interface  303  through the second polarity terminal  202  of the adapting element  20 , and the third polarity adapting member  306  through the at least one third polarity interface  305  through the third polarity terminal  203  of the adapting element  20 , respectively. The cable interface  32  of the adapter  30  is electrically connected to the phase line (also known as fire wire or live wire), neutral line, and ground line of the electric supply, respectively, to provide AC. 
     The electric potentials of the first polarity terminal  201 , the second polarity terminal  202 , and the third polarity terminal  203  are different from those of the first polarity adapting member  302 , the second polarity adapting member  304 , and the third polarity adapting member  306 , and can generally be divided into phase line, neutral line, and ground line. In one embodiment, the first polarity adapting member  302  and the second polarity adapting member  304  can have a first potential or a second potential respectively corresponding to the phase line or the neutral line, while the third polarity adapting member  306  can correspond to the ground line and have a third potential. However, the present disclosure is not limited thereto. As long as the design can ensure that the polarity of each of the polarity terminals in the adapting element  20  is consistent with that of each of the polarity adapting members of the adapter  30  electrically connected. 
     As shown in  FIGS.  5  and  6   , the adapting element  20  may be installed into the adapter interface  34  on the adapter  30  in a first installation direction or a second installation direction. For example, installing in the first installation direction (an X direction) is to set the adapting element  20  perpendicular to the X direction, while installing in the second installation direction (a Y direction) is to set the adapting element  20  parallel to the X direction. The first installation direction and the second installation direction are perpendicular to each other, so as to ensure that the adapting element  20  is installed in either the first installation direction or the second installation direction, the polarity of each of the polarity terminals in the adapting element  20  is consistent with that of each of the polarity adapting members of the adapter  30  electrically connected, thereby ensuring the normal operation of the power protection switch and increasing the safety of power consumption. 
     The first polarity terminal  201 , the third polarity terminal  203 , and the second polarity terminal  202  are sequentially arranged diagonally on a bottom surface opposite to the female interface  22  on the adapting element  20 , and can be arranged equidistant from each other. In addition, the first polarity terminal  201 , the second polarity terminal  202 , and the third polarity terminal  203  are respectively cylindrical and have the same shape as each other. The at least one first polarity interface  301 , the at least one second polarity interface  303 , and the third polarity interface  305  of the adapter  30  can be respectively arranged corresponding to the first polarity terminal  201 , the second polarity terminal  202 , and the third polarity terminal  203 , and be grooves or slots capable of holding their cylindrical shape, but the present disclosure is not limited thereto. In addition, the at least one first polarity interface  301  and the at least one second polarity interface  303  are also arranged diagonally to each other. That is, as shown in  FIG.  5   , when the number of the first polarity interface  301  and the second polarity interface  303  is respectively two, the first polarity interface  301  and the second polarity interface  303  can present in an “X” shape, and the third polarity interface  305  is disposed at the intersection of diagonal lines. 
     As shown in  FIGS.  5  and  6   , the first polarity adapting member  302  and the second polarity adapting member  304  are arranged to be lower than the third polarity adapting member  306  in a Z direction (vertical direction) and parallel to each other, so as to avoid short circuit caused by contact between the every polarity adapting members, thereby improving power safety. In addition, the first polarity adapting member  302 , the second polarity adapting member  304 , and the third polarity adapting member  306  are disposed of a plurality of U-shaped receiving portions (not labeled in the figures) to respectively fit the shape of the first polarity terminal  201 , the second polarity terminal  202 , and the third polarity terminal  203 , so that the every polarity terminals can be engaged with the every polarity adapting members more stable. 
     Please refer to  FIGS.  7  and  8   .  FIG.  7    is a three-dimensional schematic diagram of a perspective of an adapting element  20  and an adapter  30  according to second embodiment of the present disclosure.  FIG.  8    is a three-dimensional schematic diagram of another perspective of the adapting element  20  and the adapter  30  according to second embodiment of the present disclosure. The second embodiment of the present disclosure is directed to a replaceable socket device  10 ′, which is different from the replaceable socket device  10  of the first embodiment at least in that the first polarity terminal  201 , the second polarity terminal  202 , and the third polarity terminal  203  are disposed in a straight line (perpendicular or parallel to the X direction in the first installation direction), and the at least one first polarity interface  301 , the at least one second polarity interface  303 , and the third polarity interface  305  may be disposed in a cross shape corresponding to the first polarity terminal  201 , the second polarity terminal  202 , and the third polarity terminal  203 , respectively. 
     As shown in  FIGS.  7  and  8   , in the second embodiment, the first polarity adapting member  302  and the second polarity adapting member  304  are arranged to be higher than the third polarity adapting member  306  in the Z direction (vertical direction), and are in a special shape in coordination with the cross shape of the first polarity interface  301  and the second polarity interface  303 , so as to avoid short circuit caused by contact between the every polarity adapters. Other technical features of the adapting element  20  and the adapter  30  of the second embodiment have been described in the first embodiment, so they will not be repeated here. 
     Please refer to  FIGS.  9  and  10   .  FIG.  9    is a three-dimensional schematic diagram of a perspective of an adapting element  20  and an adapter  30  according to third embodiment of the present disclosure.  FIG.  10    is a three-dimensional schematic diagram of another perspective of the adapting element  20  and the adapter  30  according to third embodiment of the present disclosure. The third embodiment of the present disclosure is directed to a replaceable socket device  10 ″, which is different from the replaceable socket device  10  of the first embodiment at least in that the first polarity terminal  201  and the second polarity terminal  202  are respectively rectangular columnar, and the shapes are the same as each other, while the third polarity terminal  203  is cylindrical. The at least one first polarity interface  301  and the at least one second polarity interface  303  of the adapter  30  are grooves or slots capable of holding a rectangular cylindrical shape, but the present disclosure is not limited thereto. 
     As shown in  FIGS.  9  and  10   , in the third embodiment, the first polarity adapting member  302  and the second polarity adapting member  304  are arranged to be lower than the third polarity adapter  306  in the Z direction (vertical direction), and are in a special shape in coordination with the “X” shape setting of the first polarity interface  301  and the second polarity interface  303 , so as to avoid short circuit caused by contact between the every polarity adapters. Other technical features of the adapting element  20  and the adapter  30  of the third embodiment have been described in the first embodiment, so they will not be repeated here. 
     Please refer to  FIGS.  11  and  12   .  FIG.  11    is a three-dimensional schematic diagram of a perspective of an adapting element  20  and an adapter  30  according to fourth embodiment of the present disclosure.  FIG.  12    is a three-dimensional schematic diagram of another perspective of the adapting element  20  and the adapter  30  according to fourth embodiment of the present disclosure. The fourth embodiment of the present disclosure is directed to a replaceable socket device  10 ′″. The replaceable socket device  10 ′″ of the fourth embodiment is different from the replaceable socket device  10  of the first embodiment at least in that the first polarity terminal  201  and the second polarity terminal  202  are respectively rectangular columnar, and the shapes are the same as each other, while the third polarity terminal  203  is cylindrical. The at least one first polarity interface  301  and at least one second polarity interface  303  of the adapter  30  are grooves or slots capable of holding a rectangular cylindrical shape, but the present disclosure is not limited thereto. The at least one first polarity interface  301 , the at least one second polarity interface  303 , and the third polarity interface  305  of the adapter  30  may be disposed in a cross shape corresponding to the first polarity terminal  201 , the second polarity terminal  202 , and the third polarity terminal  203 , respectively. 
     As shown in  FIGS.  11  and  12   , in the fourth embodiment, the first polarity adapting member  302  and the second polarity adapting member  304  are arranged to be higher than the third polarity adapting member  306  in the Z direction (vertical direction), and are in a special shape in coordination with the cross shape of the first polarity interface  301  and the second polarity interface  303 , so as to avoid short circuit caused by contact between the every polarity adapters. Other technical features of the adapting element  20  and the adapter  30  of the fourth embodiment have been described in the first embodiment, so they will not be repeated here. 
     In particular, the shapes of the above polarity terminals, polarity interfaces, and polarity adapting members of the present disclosure are only examples, which can also be oval, triangular, or other shapes, and can be configured according to actual needs. The present disclosure is not limited to specific shapes and setting methods. 
     The Embodiments of a Fool-Proof Structure 
     In the following description, for ease of understanding, the icons in the following embodiments, such as the cable interface  32 , the main switch  310 , and the sub switch  320  are omitted, and the adapting element  20  and the adapter interface  34  are only illustrated in one group. The at least one adapting element  20  of the replaceable socket device  10 ,  10 ′,  10 ″,  10 ′″ of the present disclosure further comprises at least one first fool-proofing structure  210 . The adapter  30  of the present disclosure further comprises at least one second fool-proofing structure  330 , which is respectively disposed in the at least one adapter interface  34 , and the at least one second fool-proofing structure  330  is adapted to the at least one first fool-proofing structure  210 . As mentioned above, in order to make the polarity consistent, the adapting element  20  of the present disclosure can be installed in the first installation direction or the second installation direction. Please refer to  FIGS.  5 ,  6 , and  13   .  FIG.  13    is a three-dimensional schematic diagram of a first fool-proofing structure  210  of the adapting element  20  and a second fool-proofing structure  330  of the adapter  30  according to first embodiment of the present disclosure. As shown in  FIG.  13   , the at least one first fool-proofing structure  210  is a groove, and the at least one second fool-proofing structure  330  is a protrusion structure adapted to the groove. For example, the top surface of the adapting element  20  as a rectangle, the first fool-proofing structure  210  may be two grooves respectively arranged on both adjacent sides of the adapting element  20 , while the second fool-proofing structure  330  may be a protrusion structure arranged in the adapter interface  34  (e. g., one side). Alternatively, in another embodiment, the first fool-proofing structure  210  may be two protrusion structures respectively arranged on both adjacent sides of the adapting element  20 , while the second fool-proofing structure  330  may be a groove arranged in the adapter interface  34 . The present disclosure is not limited to the shape of the protrusion structure and the groove. 
     Please refer to  FIG.  14   , which is a three-dimensional schematic diagram of a first fool-proofing structure  210  of the adapting element  20  and a second fool-proofing structure  330  of the adapter  30  according to second embodiment of the present disclosure. The at least one first fool-proofing structure  210  is at least one lead angle, and the at least one second fool-proofing structure  330  is at least one concave structure adapted to the at least one lead angle. For example, the top surface of the adapting element  20  as a rectangle, for example, the first fool-proofing structure  210  can be two lead angles formed at two adjacent corners of the adapting element  20 , while the second fool-proofing structure  330  can be a concave structure arranged in the adapter interface  34  (e. g., one corner). The present disclosure is not limited to the shape or angle of the concave structure and the lead angle. 
     Please refer to  FIG.  15   , which is a three-dimensional schematic diagram of a first fool-proofing structure  210  of the adapting element  20  and a second fool-proofing structure  330  of the adapter  30  according to third embodiment of the present disclosure. The at least one first fool-proofing structure  210  is at least one columnar structure, and the at least one second fool-proofing structure  330  is at least one containing structure adapted to the at least one columnar structure. For example, the first fool-proofing structure  210  may be a columnar structure protruding on the bottom surface of the adapting element  20  relative to the female interface  22 , while the second fool-proofing structure  330  may be two containing structures arranged on one surface of the adapter interface  34  (e.g., the adapter interface  34  is provided with one surface of the first polarity interface  301 , the second polarity interface  303 , and the third polarity interface  305 ). Alternatively, in another embodiment, the first fool-proofing structure  210  may be a containing structure arranged on the bottom surface of the adapting element  20  relative to the female interface  22 , while the second fool-proofing structure  330  may be two columnar structures protruding on one surface of the adapter interface  34 . The present disclosure is not limited to the shape of the columnar structure and the containing structure. 
     Please refer to  FIG.  16   , which is a three-dimensional schematic diagram of a first fool-proofing structure  210  of the adapting element  20  and a second fool-proofing structure  330  of the adapter  30  according to fourth embodiment of the present disclosure. A size of the first polarity terminal  201  is larger than that of the second polarity terminal  202 . The first polarity terminal  201  is used as the at least one first fool-proofing structure  210 , and the at least one second fool-proofing structure  330  is the at least one containing structure adapted to the first polarity terminal  201 . That is, in the fourth embodiment, the adapting element  20  and the adapter  30  do not need to be respectively provided with the first fool-proofing structure  210  and the second fool-proofing structure  330 , but adjust the size of the first polarity terminal  201  and the corresponding first polarity interface  301  (e.g., adjust its cylindrical volume), so that the first polarity terminal  201  cannot be inserted into the second polarity interface  303 , to use it as the first fool-proofing structure  210  and the second fool-proofing structure  330 , thereby reducing the production cost, reducing steps, and improving yield rate. In another embodiment, the size of the second polarity terminal  202  may be larger than the first polarity terminal  201 , the second polarity terminal  202  is used as the at least one first fool-proofing structure  210 , and the at least one second fool-proofing structure  330  is at least one containing structure adapted to the second polarity terminal  202 . However, the present disclosure is not limited thereto. 
     Please refer to  FIG.  17   , which is a three-dimensional schematic diagram of a first fool-proofing structure  210  of the adapting element  20  and a second fool-proofing structure  330  of the adapter  30  according to fifth embodiment of the present disclosure. The first polarity terminal  201  comprises a sleeve structure, a part of which is sleevedly disposed on the first polarity terminal  201 , so that the size of one end (or bottom end) of the first polarity terminal  201  close to the bottom surface of the adapting element  20  is greater than that of the second polarity terminal  202 , and the size of one end (or tip) away from the bottom surface of the adapting element  20  is equal to that of the second polarity terminal  202 , so that the first polarity terminal  201  is used as the at least one first fool-proofing structure  210 , and the at least one second fool-proofing structure  330  is at least one containing structure adapted to the first polarity terminal  201 . That is, in the fifth embodiment, the adapting element  20  and the adapter base do not need to be respectively provided with the first fool-proofing structure  210  and the second fool-proofing structure  330 , but adjust the sleeve structure (the size of part of the cylindrical volume) partially sleeved on the bottom end of the first polarity terminal  201  and the corresponding first polarity interface  301 , so that the first polarity terminal  201  cannot be completely inserted into the second polarity interface  303 , to use it as the first fool-proofing structure  210  and the second fool-proofing structure  330 , thereby reducing the production cost, reducing steps, and improving yield rate. In another embodiment, the second polarity terminal  202  may also comprises a sleeve structure, a part of which is sleevedly disposed on the first polarity terminal  201 , so that the second polarity terminal  202  is used as the at least one first fool-proofing structure  210 , and the at least one second fool-proofing structure  330  is at least one containing structure adapted to the second polarity terminal  202 . However, the present disclosure is not limited thereto. 
     Thus, through the first fool-proofing structure  210  and the second fool-proofing structures  330  matched with each other, the adapting element  20  can be limited to be installed on the adapter  30  only in the first installation direction or the second installation direction, and the user can directly see how the adapting element  20  should be installed visually, so as to avoid the user&#39;s wrong insertion when using the replaceable socket device  10 ,  10 ′,  10 ″,  10 ′″, and reduce the risk of short circuit or electric leakage. 
     In addition, please refer to  FIGS.  1 ,  5 , and  18   ,  FIG.  18    is a top view of a power socket of the replaceable socket device according to one embodiment of the present disclosure. The female interface  22  arranged on the top surface of the adapting element  20  of the replaceable socket device  10  can be the power socket  220  of general electric supply 110 V to 120 V or 220 V to 240 V, and the power socket  220  can also be a power socket of different specifications. As shown in  FIG.  18   , the female interface  22  can be a power socket conforming to different specifications, such as type A power socket  220 A, type B power socket  220 B, type C power socket  220 C, type D power socket  220 D, type E power socket  220 E, type F power socket  220 F, type G power socket  220 G, type H power socket  220 H, type I power socket  2201 , type J power socket  220 J, type K power socket  220 K, type L power socket  220 CL, etc., or universal power sockets, such as type A and type C universal socket  220 M, multinational universal sockets  220 N and  2200 , can be applied to power sockets of various specifications. However, the present disclosure is not limited thereto. 
     Please refer to  FIG.  19   , which is a top view of a female interface  22  of the replaceable socket device  10  according to one embodiment of the present disclosure. The female interface  22  can also be a universal serial bus (USB) socket  222  to supply power to USB 2.0, USB 2.0 Standard A, USB 2.0 Type C, USB 3.0, USB 3.1, etc., and other electronic devices suitable for USB, and the female interface  22  can also be a 12V cigarette lighter socket  228 . In addition, the replaceable socket device  10  may also have the function of power line communication to process network data and transmit and receive signals from other power line communication devices, electronic devices, the internet, etc. Therefore, the female interface  22  can also be a network socket  224  of RJ45 and other specifications. In this way, the replaceable socket device of the present disclosure can provide network signals to electronic devices while providing power supply. In addition to providing power and network signals, the adapting element  20  can also be a light emitting diode (LED) lamp  226 , which can be used for lighting or as an indicator, such as displaying the load on the replaceable socket device  10 ,  10 ′,  10 ″,  10 ′″ in different LED colors, or displaying the online status of the network with long light or flashing. It should be noted that, the present disclosure is not limited to the example of the female interface  22  described above. 
     To sum up, the replaceable socket device  10 ,  10 ′,  10 ″,  10 ′″ can replace the adapting element  20  according to the requirement, or change the installation direction according to the use situation. In addition, the adapter  30  can also have different shapes for a user to choose from. The detachable adapter cable of the cable interface  32  can also be pulled out when not in use, which facilitates the overall storage of the replaceable socket device  10 ,  10 ′,  10 ″,  10 ′″ and reduces the occupation of space. Furthermore, due to the assemblies being modular, the user can select only the needed parts or choose to purchase only the damaged part, so that the cost can be reduced during manufacturing, and the user can also reduce the cost during purchase. In addition, through the first fool-proofing structure  210  and the second fool-proofing structure  330 , the adapting element  20  can be limited to be installed on the adapter  30  only in the first installation direction or the second installation direction, and the user can directly see how the adapting element  20  should be installed visually, so as to avoid the user&#39;s wrong insertion when using the replaceable socket device  10 ,  10 ′,  10 ″,  10 ′″, and reduce the risk of short circuit or electric leakage. Therefore, the replaceable socket device  10 ,  10 ′,  10 ′,  10 ″ and adapter  30  of the present disclosure have the advantages of power safety, beauty, space-saving and cost-effectiveness. 
     While the present invention has been described in connection with what is considered the most practical and preferred embodiments, it is understood that this invention is not limited to the disclosed embodiments but is intended to cover various arrangements made without departing from the scope of the broadest interpretation of the appended claims.