A pin assembly and a folding extension socket

Abstract

The utility model relates to a kind of pin assembly, including support part and two movable pieces movably arranged on support part, two movable pieces can rotate along the same direction relative to support part, movable piece includes coaxially arranged roller part and gear part and is connected by the transmission member meshing with corresponding gear part, pin part is protrudingly arranged outside roller part, the pin assembly has first form and second form, in first form, pin part extends along the first direction perpendicular to base plate, in second form, pin part extends along the second direction parallel to base plate.The utility model also relates to folding type extension socket with the above-mentioned pin assembly, multiple pin parts on it can rotate along the same direction, user's finger is not easy to touch other pin parts when dialing any pin part, indirectly through transmission member transmission between two movable pieces, the rotation of two movable pieces can be more smooth, so as to be able to improve use experience.

Description

Technical Field

[0001] This utility model relates to the field of sockets, and more particularly to a plug assembly and a foldable extension socket having the plug assembly. Background Technology

[0002] To facilitate storage, many sockets and plugs adopt a folding design, meaning the prongs can be flipped back into the socket body when not in use to reduce size. For three-prong sockets or plugs, existing designs often use a fixed connection between the positive and negative prongs to form a single assembly. This assembly has a transmission relationship with the grounding prong, allowing the user to simultaneously retract or extend the grounding prong along with the positive and negative prongs by moving the assembly. However, in existing folding prong designs, the movement direction of the positive and negative prongs is opposite to that of the grounding prong, and the lateral distance between the positive and negative prongs and the grounding prong is small, making it easy for the grounding prong to bump into the user's fingers when moving the positive and negative prongs. Furthermore, the direct transmission between the prongs in existing folding designs results in less smooth prong movement. Both of these factors negatively impact the user experience. Utility Model Content

[0003] The primary objective of this invention is to provide a pin assembly with a better user experience.

[0004] The second objective of this invention is to provide a foldable extension socket having the aforementioned pin assembly.

[0005] To achieve the aforementioned first objective, this utility model provides a pin assembly, configured on a plug or socket, characterized in that it includes a support portion and two movable members movably disposed on the support portion. The two movable members can rotate relative to the support portion in the same direction. Each movable member includes a roller portion and a gear portion coaxially disposed. The two movable members are connected by a transmission member meshing with the corresponding gear portion. The support portion has a base plate, on which a first support portion that cooperates with the roller portion is provided. A pin portion is provided protruding from the outer side of the roller portion, and the extension direction of the pin portion is perpendicular to the axial direction of the roller portion.

[0006] The pin assembly has a first form and a second form. In the first form, the pin portion extends along a first direction perpendicular to the substrate, and in the second form, the pin portion extends along a second direction parallel to the substrate.

[0007] As can be seen from the above solution, the two moving parts are engaged with the same transmission component via gears, ensuring that they rotate synchronously in the same direction. This prevents the user's fingers from easily touching the pins of the other moving part when manipulating the pins of either part. Furthermore, the indirect transmission between the two moving parts via the transmission component makes their rotation smoother. Both of these aspects contribute to improving the user experience of the corresponding plug or socket product. The first form corresponds to the usage form of the socket or plug product, and the second form corresponds to the storage form. Therefore, the above-mentioned pin assembly is compatible with foldable plug or socket products.

[0008] A further embodiment is that the plug portion includes a positive plug portion, a negative plug portion, and a ground plug portion, and the moving parts include an active part and a driven part, with the positive plug portion and the negative plug portion located on the active part and the ground plug portion located on the driven part.

[0009] As can be seen from the above scheme, based on the arrangement of the positive, negative and ground pins in the standard three-pin system, the above configuration idea of ​​placing the positive and negative pins on the driving component and the ground pin on the driven component is more reasonable. It also makes it easier to set up a transmission component between the driving and driven components, and the tossing operation is also more labor-saving.

[0010] A further solution includes a locking structure that inhibits the rotation of the active component to maintain the first and second configurations of the pin assembly.

[0011] As can be seen from the above scheme, the introduction of a locking structure can increase the difficulty of switching the pin assembly between the two modes to a certain extent, thereby helping to keep the pin assembly in a specific mode and preventing the pin assembly from accidentally switching modes due to external forces.

[0012] A further embodiment is that the locking structure includes a floating block and a stop bar located on the driving member. The floating block is connected to the support part through a connecting spring that can elastically deform in the first direction. The stop bar is located at the end of the roller part and has two mutually perpendicular cut-off surfaces and a transition arc surface connecting the two cut-off surfaces. The floating block has a top arc surface at the end in the first direction. In the first and second configurations, the vertex of the top arc surface is located between the two edge lines of the same cut-off surface in the first direction.

[0013] As can be seen from the above scheme, the aforementioned stop bar and floating block can serve as a specific implementation of the locking structure. The driving member needs to overcome the deformation force of the connecting spring to rotate, thereby suppressing accidental rotation of the driving member caused by external forces. During the rotation of the driving member, the stop bar and the floating block cooperate through the transition arc surface and the top arc surface, thus enabling the rotational action of the pin assembly form switching to be executed relatively smoothly.

[0014] A further embodiment includes two rotating bodies connected to both ends of the stop lever. The positive and negative plugs are located on one rotating body, and each rotating body includes a roller and a gear. Each gear is located at the end of the corresponding roller away from the stop lever. The two rollers of the active component are coaxially arranged.

[0015] As can be seen from the above scheme, the stop rod can suppress the rotation of two rotating bodies at the same time. The two rotating bodies are connected by the stop rod to ensure rotational synchronization. The driving member is driven by the two gears at the end to ensure the rotational synchronization between the driving member and the driven member.

[0016] A further proposed solution is that the driven member has two gear sections located at both ends of the roller section, and the transmission member is a synchronous belt that surrounds the gear sections at the corresponding ends of the driving member and the driven member.

[0017] As can be seen from the above scheme, chain drive or gear drive can be used between the driving component and the driven component. Compared with gear (set) drive, using a synchronous belt as the transmission component based on the chain drive concept can eliminate the need to set up a rotating shaft, thus making it easier to implement.

[0018] To achieve the second objective mentioned above, this utility model provides a foldable extension socket, including a main body and the aforementioned pin assembly. The main body includes a housing, a support portion is disposed inside the housing, the housing includes a cover portion opposite to the support portion in a first direction, the cover portion is provided with a second support portion that cooperates with the roller portion, the pin portion has an external section that penetrates the cover portion, and the cover portion has a recessed receiving groove on the side opposite to the support portion that can accommodate the external section.

[0019] In the first configuration, the outer section protrudes out of the receiving groove in the first direction; in the second configuration, the outer section is located inside the receiving groove and coincides with the cover in the first direction.

[0020] As can be seen from the above solution, for application socket products corresponding to the aforementioned pin assembly, placing the support part inside the housing and providing two support parts on the support part and the cover part can effectively limit and guide the rotation of the roller part. The receiving slot can store the external section in the second form, and since the multiple external sections move in the same direction, the user's hand is less likely to touch other pins when operating the pin part.

[0021] A further option is that the receiving groove extends along the second direction, and at least one receiving groove has a flared portion at its first end in the second direction.

[0022] As can be seen from the above scheme, the flared part at one end of the receiving groove is equivalent to an operating area, which makes it easy for the user to insert their finger into it and apply it to the external section, thereby smoothly moving the pin and flipping it to the first form.

[0023] A further solution is to provide a limiting baffle at the second end of each receiving slot in the second direction, which can cooperate with the external segment in the first configuration.

[0024] As can be seen from the above scheme, the limiting barrier can suppress excessive rotation of the pin and can work with the locking structure to maintain the first shape of the pin.

[0025] A further embodiment is that the pin portion also has an internal section located inside the housing, and a copper clip is also provided inside the housing. In the first direction, the support portion is located between the copper clip and the cover portion. The support portion has a hollow portion in the area corresponding to the copper clip. In the first configuration, the internal section passes through the hollow portion and connects to the copper clip.

[0026] As can be seen from the above solution, placing the copper clip, which is part of the internal wiring of the socket, on the side of the support away from the cover and partially hollowing out the support can ensure that the built-in section is connected to the internal wiring of the socket only in the first state.

[0027] The plug assembly and foldable extension socket of this utility model have multiple plug parts that can rotate in the same direction. When the user moves any plug part, it is not easy for their fingers to touch other plug parts. The two moving parts are indirectly transmitted through a transmission part, which can make the rotation of the two moving parts smoother, thereby improving the user experience. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0030] Figure 1 This is a structural diagram of the first embodiment of the pin assembly of this utility model.

[0031] Figure 2 This is a structural diagram of the active component in an embodiment of the pin assembly of this utility model.

[0032] Figure 3 This is a structural diagram of the driven component in an embodiment of the pin assembly of this utility model.

[0033] Figure 4 This is a structural diagram of the support portion in an embodiment of the plug assembly of this utility model.

[0034] Figure 5This is a structural diagram of the embodiment of the foldable extension socket of this utility model corresponding to the first form.

[0035] Figure 6 This is a structural diagram of the second embodiment of the foldable extension socket of this utility model.

[0036] Figure 7 This is a structural diagram of the cover in an embodiment of the foldable extension socket of this utility model.

[0037] Figure 8 This is a rear structural diagram of the embodiment of the foldable extension socket of this utility model, corresponding to the first form.

[0038] Figure 9 yes Figure 8 AA sectional view.

[0039] Figure 10 It corresponds to Figure 9 The second sectional view.

[0040] Reference numerals: 100, pin assembly; 110, support portion; 111, base plate; 112, first support portion; 113, cutout portion; 120, moving part; 120a, driving part; 120b, driven part; 121, roller portion; 122, gear portion; 123, pin portion; 123a, positive pin portion; 123b, negative pin portion; 123c, ground pin portion; 1231, external section; 1 232. Built-in section; 130. Transmission component; 200. Main body; 210. Outer shell; 211. Cover; 212. Second support; 213. Receiving groove; 214. Flared opening; 215. Limiting baffle; 220. Power supply interface; 300. Locking structure; 310. Floating block; 311. Top arc surface; 320. Stop bar; 321. Cut-off surface; 322. Transition arc surface; 330. Connecting spring. Detailed Implementation

[0041] The preferred embodiments of this application will now be described in detail with reference to the accompanying drawings. In the following description, the same reference numerals are used for the same components, and repeated descriptions are omitted. Furthermore, the drawings are merely schematic diagrams, and the proportions of the components or their shapes may differ from actual dimensions. It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0042] It should also be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component present. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component present.

[0043] In existing folding plug designs, the positive and negative plugs move in the opposite direction to the ground plug, and the lateral distance between the positive / negative and ground plugs is small. This makes it easy for the ground plug to bump into the user's fingers when the positive / negative plugs are moved. Furthermore, the direct transmission between the plugs in existing folding designs results in less smooth plug movement. Both of these factors negatively impact the user experience.

[0044] See Figure 1 , 5 The foldable extension socket provided in this embodiment includes a pin assembly 100 and a main body 200. See also... Figures 1-4 The pin assembly 100 includes a support portion 110 and two movable members 120 movably disposed on the support portion 110. The two movable members 120 can rotate relative to the support portion 110 in the same direction. Each movable member 120 includes a roller portion 121 and a gear portion 122 coaxially disposed. The two movable members 120 are connected by a transmission member 130 that meshes with the corresponding gear portion. The support portion 110 has a base plate 111. The base plate 111 is provided with a first support portion 112 that cooperates with the roller portion 121. A pin portion 123 is provided protruding from the outer side of the roller portion 121. The extending direction of the pin portion 123 is perpendicular to the axial direction of the roller portion 121.

[0045] The pin assembly 100 has a first configuration and a second configuration. In the first configuration, the pin portion 123 extends along a first direction D1 perpendicular to the substrate 111. In the second configuration, the pin portion 123 extends along a second direction D2 parallel to the substrate 111.

[0046] See Figures 5-10 The main body 200 includes a housing 210, and a support portion 110 is disposed within the housing 210. The housing 210 includes a cover portion 211 opposite to the support portion 110 in a first direction D1. The cover portion 211 is provided with a second support portion 212 that cooperates with the roller portion 121. The insert portion 123 has an external section 1231 that penetrates through the cover portion 211. The cover portion 211 has a recessed receiving groove 213 on the side opposite to the support portion 110 to accommodate the external section 1231. In a first configuration, the external section 1231 protrudes beyond the receiving groove 213 in the first direction D1. In a second configuration, the external section 1231 is located within the receiving groove 213 and coincides with the cover portion 211 in the first direction D1.

[0047] It should be noted that the plug assembly 100, as a set of components, can be applied to plugs, sockets, and various electrical products that integrate plugs and require the introduction of foldable plugs. The foldable extension socket here is only a specific application case of the plug assembly 100 and does not constitute a limitation on the application scenario of the plug assembly 100. In this embodiment, the body 200 of the foldable extension socket is generally rectangular in shape and has power supply interfaces 220 on different sides. These power supply interfaces 220 include three-hole plug positions, two-hole plug positions, and USB interfaces.

[0048] The two movable parts 120 are engaged with the same transmission member 130 via the gear part 122, ensuring that they rotate synchronously in the same direction. This prevents the user's fingers from easily touching the pin part 123 of the other movable part 120 when manipulating the pin part 123 of either movable part 120. Furthermore, the indirect transmission between the two movable parts 120 via the transmission member 130 results in smoother rotation compared to a direct transmission between them. Both of these aspects contribute to improving the user experience of the retractable extension socket. The first form of the pin assembly 100 corresponds to the usage form of the retractable extension socket, while the second form corresponds to the storage form.

[0049] To mount the plug assembly 100 onto the housing 210, the support portion 110 needs to be placed inside the housing 210, allowing a portion of the plug portion 123 to protrude from the housing 210 as an external section 1231 that can be connected to a wall socket. Simultaneously, a receiving groove 213 for accommodating the external section 1231 in its second configuration needs to be provided on the outer side of the cover portion 211. The placement of the first support portion 112 and the second support portion 212 on the support portion 110 and the cover portion 211 respectively provides good positioning and rotational guidance for the roller portion 121. In this embodiment, both the first support portion 112 and the second support portion 212 have a raised structure with a semi-circular groove, and the diameter of this semi-circular groove needs to be slightly larger than the diameter of the roller portion 121.

[0050] See Figures 1-4 In this embodiment, the plug portion 123 includes a positive plug portion 123a, a negative plug portion 123b, and a ground plug portion 123c. The movable member 120 includes an active member 120a and a driven member 120b. The positive plug portion 123a and the negative plug portion 123b are located on the active member 120a, and the ground plug portion 123c is located on the driven member 120b.

[0051] Based on the arrangement of the positive, negative, and ground pins in the standard three-pin connector, placing the positive pin 123a and negative pin 123b on the driving member 120a and configuring the ground pin 123c on the driven member 120b allows for co-directional rotation of the three types of pins through a relatively simple transmission structure design. Furthermore, since the driving member 120a is relatively larger than the driven member 120b, the driven member 120b does not impose excessive load on the operation of the driving member 120a, making operation less strenuous. Therefore, the above-mentioned arrangement of the three types of pins and the driving / driven configuration is relatively reasonable.

[0052] The pin assembly 100 also includes a locking structure 300 that inhibits the rotation of the driving member 120a to maintain the first and second configurations of the pin assembly 100. The introduction of the locking structure can increase the difficulty of switching the pin assembly 100 between the two configurations to a certain extent, thereby helping to keep the pin assembly 100 in the first or second configuration and preventing accidental switching of the configuration of the pin assembly 100 due to external forces.

[0053] The locking structure 300 of this embodiment includes a floating block 310 and a stop bar portion 320 located on the active member 120a. The floating block 310 is connected to the support portion 110 through a connecting spring 330 that can elastically deform in the first direction D1. The stop bar portion 320 is provided at the end of the roller portion 121. The stop bar portion 320 has two mutually perpendicular cut-off surfaces 321 and a transition arc surface 322 connecting the two cut-off surfaces 321. The floating block 310 is provided with a top arc surface 311 at the end in the first direction D1. In the first and second forms, the vertex of the top arc surface 311 is located between the two edge lines of the same cut-off surface 321 in the first direction D1.

[0054] The stop bar 320, the floating block 310, and the connecting spring 330 can be considered as a specific implementation of the locking structure 300. The active member 120a needs to overcome the deformation force of the connecting spring 330 to rotate, thereby suppressing the accidental rotation of the active member 120a caused by external forces. During the rotation of the active member 120a, the stop bar 320 and the floating block 310 cooperate through the transition arc surface 322 and the top arc surface 311, so the rotation action of the pin assembly 100 changing shape can be executed relatively smoothly. In this embodiment, the connecting spring 330 and the floating block 310 are integrally formed with the substrate 111. Therefore, the connecting spring 330 can be regarded as part of the substrate 111. Its opposite sides are separated from other parts of the substrate 111 by through slots, so it can undergo a certain degree of deformation in the first direction D1. The floating block 310 connected to the connecting spring can also move slightly in the first direction D1.

[0055] The active member 120a also includes two rotating bodies connected to both ends of the stop lever portion 320. The positive terminal plug portion 123a and the negative terminal plug portion 123b are respectively located on one rotating body. Each rotating body includes a roller portion 121 and a gear portion 122. Each gear portion 122 is located at the end of the corresponding roller portion 121 away from the stop lever portion 320. The two roller portions 121 of the active member 120a are coaxially arranged.

[0056] The stop lever 320 can simultaneously suppress the rotation of two rotating bodies. The two rotating bodies are connected by the stop lever 320 to ensure rotational synchronization. The driving member 120a is driven by the driven member 120b through the two gears 122 at its end, which can ensure the rotational synchronization between the driving member 120a and the driven member 120b.

[0057] The driven member 120b has two gear portions 122 located at both ends of the roller portion 121, and the transmission member 130 is a synchronous belt surrounding the gear portions 122 at the corresponding ends of the driving member 120a and the driven member 120b. To ensure rotation in the same direction and synchronization, theoretically, chain drive or gear drive can be used between the driving member 120a and the driven member 120b. However, compared with gear (set) drive, using a synchronous belt as the transmission member 130 based on the chain drive concept eliminates the need for a rotating shaft, thus making it easier to implement.

[0058] See Figures 5-10 The receiving groove 213 extends along the second direction D2, and at least one receiving groove 213 is provided with a flared portion 214 at its first end in the second direction D2. Each receiving groove 213 is provided with a limiting baffle 215 at its second end in the second direction D2, which can cooperate with the external segment 1231 in the first configuration.

[0059] The introduction of the flared portion 214 is equivalent to setting an operating area at the end of the receiving groove 213, so that the user can insert his / her finger into it and act on the outer section 1231, thereby smoothly turning the plug portion 123 and flipping it to the first position. The flared portion 214 can be set in the receiving groove 213 corresponding to any one of the positive plug portion 123a, negative plug portion 123b, or ground plug portion 123c, and the number can be two or three. The flared portion 214 can be set as a recessed structure located outside the cover portion 211 and communicating with the receiving groove 213. The shape and size of such a recessed structure are not particularly required, as long as the user's fingertip can be inserted and contact the plug portion 123.

[0060] The limiting baffle 215 can suppress excessive rotation of the plug portion 123 and can cooperate with the locking structure 300 to maintain the first shape of the plug portion 123. In this embodiment, the movable member 120 where the positive plug portion 123a and the negative plug portion 123b are located is used as the active member 120a. Therefore, two flared portions 214 are respectively provided at the first end of the receiving groove 213 corresponding to the positive plug portion 123a and the negative plug portion 123b in the second direction D2. The first end corresponds to the movable end of the positive plug portion 123a and the negative plug portion 123b, and the second end of the receiving groove 213 where the limiting baffle 215 is located in the second direction D2 corresponds to the fixed end of the plug portion 123.

[0061] The pin portion 123 also has an internal section 1232 located inside the housing 210. The housing 210 also has a copper clip (not shown in the figure). In the first direction D1, the support portion 110 is located between the copper clip and the cover portion 211. The support portion 110 has a hollow portion 113 in the area corresponding to the copper clip. In the first state, the internal section 1232 passes through the hollow portion 113 and connects to the copper clip.

[0062] By placing the copper clip, which is part of the internal wiring of the socket, on the side of the support portion 110 away from the cover portion 211 and partially hollowing out the support portion 110, it can be ensured that the built-in section 1232 is connected to the internal wiring of the socket only in the first state.

[0063] In the above embodiments, the descriptions of each embodiment have their own emphasis. Parts not described in detail in a particular embodiment can be referred to in the relevant descriptions of other embodiments. The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0064] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

[0065] Although the present invention has been specifically described above in conjunction with the accompanying drawings and embodiments, it is to be understood that the above description does not limit the present invention in any way. Those skilled in the art can make modifications and variations to the present invention as needed without departing from the essential spirit and scope of the present invention, and all such modifications and variations fall within the scope of the present invention.

Claims

1. A pin assembly disposed on a plug or socket, characterized in that: The device includes a support portion and two movable members movably mounted on the support portion. The two movable members are rotatable relative to the support portion in the same direction. Each movable member includes a coaxially arranged roller portion and a gear portion. The two movable members are connected by a transmission member meshing with a corresponding gear portion. The support portion has a base plate, on which a first support portion mates with the roller portion. A protruding pin portion protrudes from the outer side of the roller portion, and the extending direction of the pin portion is perpendicular to the axial direction of the roller portion. The pin assembly has a first form and a second form. In the first form, the pin portion extends along a first direction perpendicular to the substrate, and in the second form, the pin portion extends along a second direction parallel to the substrate.

2. The pin assembly as described in claim 1, characterized in that: The plug portion includes a positive plug portion, a negative plug portion, and a ground plug portion. The movable component includes an active component and a driven component. The positive plug portion and the negative plug portion are located on the active component, and the ground plug portion is located on the driven component.

3. The pin assembly as described in claim 2, characterized in that: It also includes a locking structure that inhibits the rotation of the active component to maintain the first and second configurations of the pin assembly.

4. The pin assembly as described in claim 3, characterized in that: The locking structure includes a floating block and a stop bar located on the active member. The floating block is connected to the support portion via a connecting spring that can elastically deform in a first direction. The stop bar is located at the end of the roller portion. The stop bar has two mutually perpendicular cut-off surfaces and a transition arc surface connecting the two cut-off surfaces. The floating block has a top arc surface at its first direction end. In the first and second configurations, the vertex of the top arc surface is located between two edges of the same cut-off surface in the first direction.

5. The pin assembly as described in claim 4, characterized in that: The active component further includes two rotating bodies connected to both ends of the stop lever portion. The positive terminal plug portion and the negative terminal plug portion are respectively located on one of the rotating bodies. Each rotating body includes a roller portion and a gear portion. Each gear portion is located at the end of the corresponding roller portion away from the stop lever portion. The two roller portions of the active component are coaxially arranged.

6. The pin assembly as described in claim 5, characterized in that: The driven member has two gear portions located at both ends of the roller portion, and the transmission member is a synchronous belt surrounding the gear portions at the corresponding ends of the driving member and the driven member.

7. A foldable extension socket, comprising a main body and a pin assembly as described in any one of claims 1-6, characterized in that: The main body includes a housing, and the support portion is disposed within the housing. The housing includes a cover portion opposite to the support portion in a first direction. The cover portion is provided with a second support portion that mates with the roller portion. The pin portion has an external section that penetrates the cover portion. The cover portion has a recessed receiving groove on the side opposite to the support portion to accommodate the external section. In the first configuration, the external segment protrudes beyond the receiving groove in the first direction; in the second configuration, the external segment is located inside the receiving groove and coincides with the cover in the first direction.

8. The foldable extension socket as described in claim 7, characterized in that: The receiving groove extends along a second direction, and at least one of the receiving grooves has a flared portion at its first end in the second direction.

9. The foldable extension socket as described in claim 8, characterized in that: Each of the receiving slots is provided with a limiting baffle at its second end in the second direction, which can cooperate with the external segment in the first configuration.

10. The foldable extension socket as described in claim 7, characterized in that: The pin portion also has an internal section located inside the housing, and a copper clip is also provided inside the housing. In a first direction, the support portion is located between the copper clip and the cover portion. The support portion has a hollow portion in the area corresponding to the copper clip. In the first state, the internal section passes through the hollow portion and connects to the copper clip.

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