Socket combination with freely detachable holder and fixing groove structure of socket

Abstract

The invention provides a socket combination with a freely detachable holder and a fixing groove structure of the socket. The socket is provided with a fixing surface, the fixing surface is provided with at least one fixing groove, the fixing groove is provided with a placing opening and a sliding section connected to the placing opening, the width of the placing opening is larger than that of the sliding section, and a head limiting groove which is concavely arranged towards the fixing surface is arranged in the sliding section. The head limiting groove is provided with a first retaining wall adjacent to the imbedding opening. A free assembling and disassembling clamping seat can be combined with the fixing groove through a tenon with a head so that the free assembling and disassembling clamping seat can be installed on the fixing face of the socket, the tenon with the head is provided with a head portion and a neck portion, the maximum width of the head portion is smaller than the imbedding opening but larger than the sliding section, the head portion penetrates into the fixing groove through the imbedding opening, and the head portion penetrates into the fixing groove through the neck portion. The neck portion slides on the sliding section, and the head portion enters the sliding section and then is clamped into the head portion limiting groove to be blocked by the first retaining wall, so that the tenon with the head cannot slide back to the placing opening from the sliding section.

Description

Technical Field

[0001] The present invention relates to a socket combination with a freely detachable and attachable clip seat and a fixing groove structure of the socket. In particular, when the freely detachable and attachable clip seat is installed on the socket by being combined with the fixing groove of the socket through a leading tenon, a head limiting groove for accommodating the head of the leading tenon is recessed in the sliding section of the fixing groove, and the head of the leading tenon is blocked by a first retaining wall in the head limiting groove, so that the leading tenon cannot slide back from the sliding section to the insertion opening of the fixing groove. Background Art

[0002] In order to facilitate the use of an extension cord socket on a desktop, in addition to directly placing the extension cord socket on the desktop, in order to avoid collision and dropping or to facilitate the insertion and removal of the plug of an electrical device, the extension cord socket is combined with a fixing device, and the extension cord socket is fixed to the table board through the fixing device.

[0003] Chinese Patent No. CN210224478U, "A Rotatable Table-Clamping Multi-Port Socket", in this case, the socket body is fixed to the desktop. In addition to using a clip seat and a clamping flap to jointly clamp the desktop, it is also necessary to use a support frame to fix the socket body. Among them, the socket body and the support frame need to be fixed through screws and nuts, and between the support frame and the clip seat, they also need to be connected to each other through a rotating shaft. That is to say, the above-mentioned support frame needs to fix the socket body with screws and nuts and also needs to be fixed to the clip seat with a rotating shaft, and the fixing operation is too complicated.

[0004] Chinese Patent No. CN214706483U, "Integrated Socket", in this case, a fixing frame is used to clamp the desktop, and the socket and the V-shaped plate of the fixing frame are fixed by two screws. Among them, the fixing holes of the socket are provided on the bottom shell, and the bottom shell is combined and fixed with the face cover and the end cover. In this fixing method, the socket cannot be easily detached from the V-shaped plate of the fixing frame. When the socket is moved away from the V-shaped plate of the fixing frame, the socket will carry the V-shaped plate at the same time, causing a burden when the socket is placed.

[0005] Taiwan, China Patent No. TW496597, "Fixing Member of Extension Cord Socket (Additional One)", in this case, a plate body pivotally connected to the extension cord socket body forms a fixture, and the extension cord socket is clamped to the table board through the fixture. The extension cord socket and the fixture in this case are integrated and cannot be disassembled for use as a general extension cord socket.

[0006] Previous cases such as Taiwan, China Application No. TW114201497, "Extension Cord Socket Structure with Multiple Freely Detachable and Attachab le Clip Seats" proposed by the inventor, are to combine the freely detachable and attachable clip seat with the sliding groove on the extension cord socket through a leading tenon. The leading tenon is inserted into the sliding groove from the insertion opening of the sliding groove and slides to the sliding section to be combined with the sliding groove. Summary of the Invention

[0007] The object of the present invention is to provide a socket combination with a freely detachable and attachable clip seat and a fixing groove structure of the socket, so as to prevent the leading tenon from slipping reversely from the sliding section of the chute to the insertion port due to unexpected external force, causing the freely detachable and attachable clip seat to disengage from the extension cord socket.

[0008] The present invention provides a fixing groove structure of a socket, comprising:

[0009] A socket, including at least one AC power socket and / or DC power socket. The socket has a fixing surface, and at least one fixing groove is provided on the fixing surface. The fixing groove has an insertion port and a sliding section connected to the insertion port. The width of the insertion port is greater than the width of the sliding section. There is a head limiting groove recessed towards the fixing surface in the sliding section, and a first retaining wall is formed in the head limiting groove.

[0010] A freely detachable and attachable clip seat can be combined with the fixing groove by a leading tenon to install the freely detachable and attachable clip seat on the fixing surface of the socket. Wherein, the leading tenon has a head and a neck. The maximum width of the head is less than the insertion port but greater than the sliding section. The head penetrates into the fixing groove from the insertion port, and the neck slides in the sliding section. After the head enters the sliding section, it is caught in the head limiting groove and blocked by the first retaining wall, so that the leading tenon cannot slide back from the sliding section to the insertion port.

[0011] Furthermore, two first retaining walls that taper towards the insertion port are formed on the periphery of the head limiting groove.

[0012] Furthermore, a second retaining wall is provided at an appropriate position in the sliding section. When the leading tenon is combined with the fixing groove, the head is caught in the head limiting groove and blocked by the first retaining wall, and the neck is blocked by the second retaining wall in the sliding section, so that the leading tenon cannot slide back from the sliding section to the insertion port. Further still, two opposite second retaining walls are provided at appropriate positions in the sliding section. The two second retaining walls are configured to taper from adjacent to the insertion port towards the sliding section to guide the neck into the sliding section.

[0013] Furthermore, the socket is an extension cord socket. The extension cord socket extends along a longitudinal direction, and a plurality of the aforementioned AC power sockets and / or DC power sockets are arranged at intervals along the longitudinal direction. Also, a plurality of the aforementioned fixing grooves are arranged at intervals along the longitudinal direction.

[0014] The present invention further provides a socket combination with a freely detachable and attachable clip seat, comprising:

[0015] A socket, comprising at least one AC power socket and / or DC power socket, the socket having a fixing surface on which at least one fixing groove is provided, the fixing groove having an insertion opening and a sliding section connected to the insertion opening, the width of the insertion opening being greater than the width of the sliding section, and on the sliding section there is a head limiting groove recessed towards the fixing surface, the head limiting groove being formed with a first retaining wall.

[0016] A freely detachable clamping seat, including: A fixing unit, including a first plate and a second plate opposite to each other, a first clamping space being defined between the first plate and the second plate, the first plate being provided with a headed tenon, the headed tenon having a head and a neck, the maximum width of the head being less than the width of the insertion opening but greater than the width of the sliding section, the first plate and the second plate jointly having a clamping force in an axial direction. A movable gasket, combined with the first plate, the first plate being axially displaceable relative to the movable gasket, and a second clamping space being defined between the movable gasket and the head of the headed tenon.

[0017] By combining the headed tenon with the fixing groove, the freely detachable clamping seat is installed on the fixing surface of the socket. Among them, the head of the headed tenon penetrates into the fixing groove through the insertion opening, and the neck slides on the sliding section. After the head enters the sliding section, the first plate is operated to axially displace relative to the movable gasket, so that the head is caught in the head limiting groove and blocked by the first retaining wall, thereby preventing the headed tenon from sliding back to the insertion opening from the sliding section; and then, an external object is clamped in the first clamping space by the clamping force, and the external object can push the first plate to axially displace relative to the movable gasket by the clamping force, so that the second clamping space synchronously clamps the extension cord socket.

[0018] Further, two first retaining walls that gradually taper towards the insertion opening are formed on the periphery of the head limiting groove.

[0019] Further, a second retaining wall is provided at an appropriate position on the sliding section. When the headed tenon is combined with the fixing groove, the head is caught in the head limiting groove and blocked by the first retaining wall, and the neck is blocked by the second retaining wall on the sliding section, so that the headed tenon cannot slide back to the insertion opening from the sliding section. Furthermore, two opposite second retaining walls are provided at appropriate positions on the sliding section, and the two second retaining walls are configured to gradually taper from adjacent to the insertion opening towards the sliding section to guide the neck into the sliding section.

[0020] Further, the socket is an extension cord socket, the extension cord socket extends along a longitudinal direction, a plurality of the aforementioned AC power sockets and / or DC power sockets are arranged at intervals along the longitudinal direction, and a plurality of the aforementioned fixing grooves are also arranged at intervals along the longitudinal direction.

[0021] Furthermore, the fixing unit includes an opening seat and a clamping rod. The opening seat includes the first plate and the second plate, and a side plate connecting the first plate and the second plate. The clamping rod has an operating end and a pressing end. The pressing end is located in the first clamping space. A threaded rod is connected between the operating end and the pressing end. The threaded rod is screwed onto the second plate in the axial direction to provide the clamping force.

[0022] Furthermore, the movable gasket includes a first gasket and a second gasket connected to each other. An activity space is formed between the first gasket and the second gasket. The activity space has an activity width between the first gasket and the second gasket. The first plate is located in the activity space. The aforementioned activity width is greater than the thickness of the first plate, so that there is a displacement distance between the first plate and the movable gasket in the axial direction and they can displace relative to each other.

[0023] The following effects can be achieved according to the above technical features:

[0024] 1. When the free loading and unloading clamp seat is installed on the socket by being combined with the fixing groove of the socket through the leading tenon, the head of the leading tenon is inserted into the fixing groove from the placing port and slides to the sliding section and then is stuck in the head limiting groove and blocked by the first retaining wall, so that the leading tenon cannot slide back from the sliding section to the placing port of the fixing groove. Thus, the free loading and unloading clamp seat can be stably installed on the socket and will not detach from the socket.

[0025] 2. By additionally providing a second retaining wall on the sliding section, when the leading tenon is combined with the fixing groove and the head is stuck in the head limiting groove and blocked by the first retaining wall, the neck is simultaneously blocked by the second retaining wall on the sliding section, making the fixing effect of the leading tenon fixed in the fixing groove better and further preventing the free loading and unloading clamp seat from detaching from the socket due to unexpected external forces.

[0026] 3. The leading tenon is arranged on the first plate of the free loading and unloading clamp seat. By combining the movable gasket on the first plate, and there is a displacement distance between the first plate and the movable gasket and they can displace relative to each other, it is thus possible to conveniently operate the head of the leading tenon to enter the sliding section and then be stuck in the head limiting groove. When the socket is fixed to an external object such as a tabletop, the first plate can also be displaced in the activity space synchronously to eliminate the gap between the free loading and unloading clamp seat and the socket after the free loading and unloading clamp seat is installed on the socket. When the free loading and unloading clamp seat tightly clamps the tabletop, the socket is simultaneously tightly clamped by the free loading and unloading clamp seat.

[0027] 4. The free loading and unloading clamp seat and the socket are movably combined. When the socket is provided with multiple fixing grooves, any free loading and unloading clamp seat can be combined with the most suitable fixing groove position on the socket according to the requirements of the installation environment to obtain the best fixing effect. Description of the Drawings

[0028] Figure 1 The socket of the present invention is made into a three-dimensional external view of an extension cord socket.

[0029] Figure 2A is Figure 1 a cross-sectional view of, showing that a head limiting groove is provided in the sliding section of the fixing groove.

[0030] Figure 2B is Figure 1 a three-dimensional cross-sectional view of, showing the shape of the fixing groove.

[0031] Figure 3 is Figure 2A a cross-sectional view of, showing that the head limiting groove has a first retaining wall.

[0032] Figure 4 is Figure 1 a rear view of, showing that the sliding section of the fixing groove has a second retaining wall.

[0033] Figure 5 The three-dimensional exploded view of the free loading and unloading clamp seat of the present invention assembled on the extension cord socket.

[0034] Figure 6 The three-dimensional combined external view of the free loading and unloading clamp seat of the present invention assembled on the extension cord socket.

[0035] Figure 7 One of the operation schematic diagrams of the free loading and unloading clamp seat of the present invention assembled on the extension cord socket.

[0036] Figure 8A Another operation schematic diagram of the free loading and unloading clamp seat of the present invention assembled on the extension cord socket.

[0037] Figure 8B is Figure 8A a three-dimensional schematic diagram of, showing that the head with a protruding tenon is inserted into the fixing groove from the insertion opening of the fixing groove.

[0038] Figure 9A is Figure 8A a cross-sectional view of, showing that the neck of the head with a protruding tenon is guided by two opposite second retaining walls and enters the sliding section of the fixing groove.

[0039] Figure 9B is Figure 9A a three-dimensional schematic diagram of, showing that the neck of the head with a protruding tenon is guided by two opposite second retaining walls and enters the sliding section of the fixing groove.

[0040] Figure 10A Another operation schematic diagram of the free loading and unloading clamp seat of the present invention assembled on the extension cord socket.

[0041] Figure 10B is Figure 10ASchematic three-dimensional view, showing the head with a tenon entering the sliding section of the fixing groove.

[0042] Figure 11 is Figure 10A Cross-sectional view, showing that after the neck of the head with a tenon enters the sliding section of the fixing groove, it is guided and stopped by two opposite second retaining walls.

[0043] Figure 12A This is the fourth operation schematic diagram of the free loading and unloading clip seat of the present invention assembled on an extension socket.

[0044] Figure 12B is Figure 12A Schematic three-dimensional view, showing that after the head of the head with a tenon enters the sliding section of the fixing groove, it is snapped into the head limiting groove.

[0045] Figure 13 is Figure 12A Cross-sectional view, showing that after the head of the head with a tenon enters the sliding section of the fixing groove and is snapped into the head limiting groove, it is stopped by the first retaining wall.

[0046] Figure 14 When implementing the present invention, this is one of the operation schematic diagrams for fixing an extension socket to a tabletop through a free loading and unloading clip seat.

[0047] Figure 15 When implementing the present invention, this is the second operation schematic diagram for fixing an extension socket to a tabletop through a free loading and unloading clip seat.

[0048] Figure 16 When implementing the present invention, this is the three-dimensional external view of fixing an extension socket to a tabletop through a free loading and unloading clip seat.

[0049] Explanation of reference numerals: 1 - extension socket; 10 - fixing surface; 11 - fixing groove; 111 - insertion opening; 112 - sliding section; 113 - head limiting groove; 114 - first retaining wall; 115 - second retaining wall; 2 - free loading and unloading clip seat; 21 - opening seat; 211 - first plate; 212 - second plate; 213 - side plate; 22 - clamping rod; 221 - operating end; 222 - pressing end; 223 - threaded rod; 23 - first clamping space; 24 - head with a tenon; 241 - head; 242 - neck; 25 - second clamping space; 3 - tabletop; 4 - movable gasket; 41 - first gasket; 42 - second gasket; 43 - movable space; P - axial direction; D - longitudinal direction; D1 - movable width; D2 - displacement distance; T - thickness of the first plate. Detailed implementation manners

[0050] The following embodiments are only used to assist in explaining the socket combination with a free loading and unloading clip seat and the fixing groove structure of the socket of the present invention, and are not intended to limit the present invention.

[0051] Please refer toFigures 1 to 4 As shown, an embodiment of the present invention provides a fixing groove structure for a socket, including:

[0052] A socket, which is made as an extension cord socket 1 in this embodiment. The extension cord socket 1 extends along a longitudinal direction D and is provided with a plurality of AC power sockets and / or DC power sockets arranged at intervals along the longitudinal direction D (not shown in the figure). The extension cord socket 1 has a fixing surface 10, and a plurality of fixing grooves 11 are arranged at intervals along the longitudinal direction D on the fixing surface 10. Each fixing groove 11 has an insertion port 111 and a sliding section 112 connected to the insertion port 111. The width of the insertion port 111 is greater than the width of the sliding section 112. In the sliding section 112, there is a head limiting groove 113 recessed towards the fixing surface 10. The head limiting groove 113 is formed with a first retaining wall 114. In this embodiment, the head limiting groove 113 is a circular groove, and two first retaining walls 114 that taper towards the insertion port 111 are formed on the periphery of the head limiting groove 113. At an appropriate position of the sliding section 112, a second retaining wall 115 is also provided. For example, in this embodiment, two opposite second retaining walls 115 are provided on the sliding section 112. The two second retaining walls 115 are configured to taper from the adjacent insertion port 111 towards the sliding section 112, and the distance between the two second retaining walls 115 is slightly smaller than the width of the neck 242.

[0053] Please refer to Figure 5 and Figure 6 As shown, an embodiment of the present invention provides a socket combination with a freely detachable clip seat, including the aforementioned extension cord socket 1 and two freely detachable clip seats 2.

[0054] Each of the free loading and unloading clamp seats 2 has a fixing unit and a movable gasket 4. In this embodiment, the fixing unit includes an opening seat 21 and a clamping rod 22. The opening seat 21 is in a C shape and has a first plate 211, a second plate 212, and a side plate 213 connecting the first plate 211 and the second plate 212. A headed tenon 24 is provided on the first plate 211. The headed tenon 24 can be combined with and disassembled from the aforementioned fixing groove 11 correspondingly. The first plate 211, the second plate 212, and the side plate 213 surround and define a first clamping space 23. The clamping rod 22 extends into the first clamping space 23 from the outside of the second plate 212. Specifically, the clamping rod 22 has an operating end 221 and a pressing end 222. The pressing end 222 is located in the first clamping space 23. A threaded rod 223 is connected between the operating end 221 and the pressing end 222. The threaded rod 223 is screwed onto the second plate 212 of the opening seat 21. The aforementioned movable gasket 4 is combined with the first plate 211. Each of the free loading and unloading clamp seats 2 is respectively combined with different fixing grooves 11 by the headed tenon 24 in an axial direction P, so that each of the free loading and unloading clamp seats 2 can be detachably fixed to the extension socket 1 at different positions in the longitudinal direction D.

[0055] Please refer to Figure 5 、 Figure 7 、 Figure 8A 、 Figure 8B As shown, the headed tenon 24 of the free loading and unloading clamp seat 2 has a head 241 and a neck 242. The maximum width of the head 241 is smaller than the insertion port 111 but larger than the sliding section 112. When installing the free loading and unloading clamp seat 2 on the extension socket 1, first insert the head 241 into the fixing groove 11 through the insertion port 111.

[0056] Please refer to Figure 5 、 Figure 8A 、 Figure 9A 、 Figure 9B As shown, after the head 241 of the headed tenon 24 is inserted into the fixing groove 11 through the insertion port 111, then the neck 242 slides on the sliding section 112. Among them, since the two second retaining walls 115 are tapered from adjacent to the insertion port 111 towards the sliding section 112, the neck 242 can be guided to cross the two second retaining walls 115 so that the headed tenon 24 enters the sliding section 112.

[0057] Please refer to Figure 5 、 Figure 10A 、 Figure 10B 、 Figure 11 As shown, when the neck 242 of the headed tenon 24 crosses the two second retaining walls 115 and enters the sliding section 112, it will be blocked by the two second retaining walls 115 when sliding in the reverse direction.

[0058] Please refer toFigure 5 , Figure 10A , Figure 12A , Figure 12B , Figure 13 As shown in Figure 13 , in this embodiment, the movable gasket 4 includes a first gasket 41 and a second gasket 42 connected to each other. An activity space 43 is formed between the first gasket 41 and the second gasket 42. There is an activity width D1 between the first gasket 41 and the second gasket 42 in the activity space 43. The first plate 211 is located in the activity space 43. The aforementioned activity width D1 is greater than the thickness T of the first plate, so that there is a displacement distance D2 between the first plate 211 and the movable gasket 4 in the axial direction P and they can relatively displace. A second clamping space 25 is defined between the first gasket 41 of the movable gasket 4 and the head 241 of the leading tenon 24. Therefore, the first plate 211 can be operated to displace relative to the movable gasket 4 in the axial direction P, so that the head 241 is caught in the head limiting groove 113 and blocked by the first retaining wall 114.

[0059] In the embodiment of the present invention, the head 241 of the leading tenon 24 is caught in the head limiting groove 113 and blocked by the first retaining wall 114, and the neck 242 is blocked by the second retaining wall 115. The leading tenon 24 cannot freely slide back from the sliding section 112 to the insertion port 111. Thereby, the leading tenon 24 is combined with the fixing groove 11 and the free loading and unloading clamp seat 2 is stably installed on the fixing surface 10 of the extension socket 1, and the free loading and unloading clamp seat 2 will not be detached from the extension socket 1 when subjected to an unexpected external force. Among them, in this embodiment, although the head 241 of the leading tenon 24 is blocked by the two opposite first retaining walls 114 and the neck 242 of the leading tenon 24 is blocked by the two opposite second retaining walls 115, it is not limited thereto. For example, only one first retaining wall 114 and only one second retaining wall 115 are provided, and the functions of blocking the head 241 and the neck 242 of the leading tenon 24 can also be achieved.

[0060] Please refer to Figures 14 to 16 As shown in Figures 14 to 16 , the free loading and unloading clamp seat 2 is laterally moved into the periphery of a tabletop 3, so that the periphery of the tabletop 3 enters the first clamping space 23 of the opening seat 21 until the periphery of the tabletop 3 abuts against the side plate 213 of the opening seat 21. Then, the operating end 221 of the clamping rod 22 is rotated, and the threaded rod 223 is screwed into the first clamping space 23 along the axial direction P until the pressing end 222 presses against the lower edge of the tabletop 3 and provides a clamping force between the first plate 211 and the second plate 212 along the axial direction P to clamp the tabletop 3. At the same time, the second clamping space 25 synchronously clamps the extension socket 1. Thereby, the extension socket 1 is fixed on the tabletop 3 through the free loading and unloading clamp seat 2.

[0061] Referring to the foregoing figures, when it is necessary to remove the free loading and unloading clamp base 2 from the extension socket 1, the first plate 211 can be displaced relative to the movable gasket 4 in the reverse direction, so that the head 241 of the headed tenon 24 is disengaged from the head limiting groove 113, and then a slight force is applied to the headed tenon 24 so that the neck 242 can reversely cross the second retaining wall 115 of the sliding section 112, and the head 241 can be withdrawn from the placing port 111 to remove the free loading and unloading clamp base 2 from the extension socket 1.

[0062] Based on the descriptions of the above embodiments, the operation, use and effects of the present invention should be fully understood. The above embodiments are only the preferred embodiments of the present invention, and the scope of the implementation of the present invention should not be limited thereby. That is, all simple equivalent changes and modifications made according to the content of the present invention fall within the scope covered by the present invention.

Claims

1. A fixing groove structure of a socket, characterized in that, Comprising: A socket, including at least one AC power socket and / or DC power socket. The socket has a fixing surface, on which at least one fixing groove is provided. The fixing groove has an insertion opening and a sliding section connected to the insertion opening. The width of the insertion opening is greater than that of the sliding section. Inside the sliding section, there is a head limiting groove recessed towards the fixing surface, and the head limiting groove forms a first retaining wall; A freely detachable clamping seat can be installed on the fixing surface of the socket by being combined with the fixing groove through a headed tenon. Wherein, the headed tenon has a head and a neck. The maximum width of the head is less than the insertion opening but greater than the sliding section. The head penetrates into the fixing groove from the insertion opening, and the neck slides in the sliding section. After the head enters the sliding section, it is caught in the head limiting groove and blocked by the first retaining wall, so that the headed tenon cannot slide back from the sliding section to the insertion opening.

2. The fixing groove structure of the socket according to claim 1, characterized in that, Two first retaining walls that gradually taper towards the insertion opening are formed on the periphery of the head limiting groove.

3. The fixing groove structure of the socket according to claim 1, characterized in that, A second retaining wall is provided at an appropriate position in the sliding section. When the headed tenon is combined with the fixing groove, the head is caught in the head limiting groove and blocked by the first retaining wall, and the neck is blocked by the second retaining wall in the sliding section, so that the headed tenon cannot slide back from the sliding section to the insertion opening.

4. The fixing groove structure of the socket according to claim 3, characterized in that, Two opposite second retaining walls are provided at an appropriate position in the sliding section. The two second retaining walls are configured to gradually taper from adjacent to the insertion opening towards the sliding section to guide the neck into the sliding section.

5. The fixing groove structure of the socket according to claim 1, characterized in that, The socket is an extension cord socket, which extends along a longitudinal direction. A plurality of the aforementioned AC power sockets and / or DC power sockets are arranged at intervals along the longitudinal direction, and a plurality of the aforementioned fixing grooves are also arranged at intervals along the longitudinal direction.

6. A socket combination with a freely detachable and attachable holder, characterized in that, Comprising: A socket, including at least one AC power socket and / or DC power socket. The socket has a fixing surface, on which at least one fixing groove is provided. The fixing groove has an insertion opening and a sliding section connected to the insertion opening. The width of the insertion opening is greater than that of the sliding section. Inside the sliding section, there is a head limiting groove recessed towards the fixing surface, and the head limiting groove forms a first retaining wall; A freely detachable clamping seat, including: A fixing unit, including a first plate and a second plate opposite to each other. A first clamping space is defined between the first plate and the second plate. The first plate is provided with a headed tenon, which has a head and a neck. The maximum width of the head is less than the insertion opening but greater than the sliding section. The first plate and the second plate jointly have a clamping force in an axial direction; A movable gasket is combined with the first plate. The first plate can displace relative to the movable gasket in the axial direction, and a second clamping space is defined between the movable gasket and the head of the headed tenon; The freely detachable clamp base is installed on the fixing surface of the socket by combining the head tenon with the fixing groove. Among them, the head of the head tenon penetrates into the fixing groove through the insertion port, and the neck slides on the sliding section. After the head enters the sliding section, the first plate is operated to displace axially relative to the movable gasket, so that the head is snapped into the head limiting groove and blocked by the first retaining wall, thereby preventing the head tenon from sliding back to the insertion port from the sliding section; then, an external object is clamped in the first clamping space by the clamping force, and the external object can push the first plate to displace relative to the movable gasket by the clamping force, so that the second clamping space synchronously clamps the extension cord socket.

7. The socket combination with a freely detachable clamping seat according to claim 6, characterized in that, Two first retaining walls that taper towards the insertion port are formed on the periphery of the head limiting groove.

8. The socket combination with a freely detachable clamping seat as claimed in claim 6, wherein, A second retaining wall is provided at an appropriate position on the sliding section. When the head tenon is combined with the fixing groove, the head is snapped into the head limiting groove and blocked by the first retaining wall, and the neck is blocked by the second retaining wall on the sliding section, so that the head tenon cannot slide back to the insertion port from the sliding section.

9. The socket combination with a freely detachable and attachable holder according to claim 8, wherein Two opposite second retaining walls are provided at appropriate positions on the sliding section. The two second retaining walls are tapered from adjacent to the insertion port towards the sliding section to guide the neck into the sliding section.

10. The socket combination with a freely detachable and attachable clamp base according to claim 6, characterized in that, The socket is an extension cord socket. The extension cord socket extends along a longitudinal direction, and a plurality of the aforementioned AC power sockets and / or DC power sockets are arranged at intervals along the longitudinal direction, and a plurality of the aforementioned fixing grooves are also arranged at intervals along the longitudinal direction.

11. The socket combination with a freely detachable and attachable clamp seat as claimed in claim 6, characterized in that, The fixing unit includes an opening seat and a clamping rod. The opening seat includes the first plate and the second plate, and a side plate connecting the first plate and the second plate. The clamping rod has an operating end and a pressing end. The pressing end is located in the first clamping space. A threaded rod is connected between the operating end and the pressing end. The threaded rod is screwed onto the second plate axially to provide the clamping force.

12. The socket combination with a freely detachable and attachable holder according to claim 6, wherein, The movable gasket includes a first gasket and a second gasket connected to each other. An activity space is formed between the first gasket and the second gasket. The activity space has an activity width between the first gasket and the second gasket. The first plate is located in the activity space. The aforementioned activity width is greater than the thickness of the first plate, so that there is a displacement distance axially between the first plate and the movable gasket and they can displace relative to each other.

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