A foldable plug
Patent Information
- Application Number
- CN202522104154.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-29
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2035-09-29
AI Technical Summary
现有的插头的插脚大多数都是固定设置在壳体的一侧，无法折叠收纳，携带过程中占用空间大
[0014]采用上述技术方案后，本实用新型有益效果为：在本实用新型中，第一插脚、第二插脚以及第三插脚转动装配在基座上；联动件用于实现第一插脚、第二插脚以及第三插脚之间的联动，且设有第一端以及与第一端相对设置的第二端。第一插脚一端的两侧分别装配在第一端上，第二插脚、第三插脚的一端分别装配在第二端的两侧上；基座的外壁上开设有分别用于收纳第一插脚、第二插脚以及第三插脚的第一收纳槽、第二收纳槽以及第三收纳槽。本可折叠插头具有收纳和使用两种状态；当本可折叠插头处于收纳状态时，第一插脚、第二插脚以及第三插脚分别收纳于第一收纳槽、第二收纳槽以及第三收纳槽内，以保护插脚、减少外力对插脚的损伤和减少空间的占用，同时也便于携带，收纳整洁，避免闲置时勾挂其他物件。当本可折叠插头处于使用状态时，第一插脚、第二插脚以及第三插脚的一端裸露出于第一收纳槽、第二收纳槽以及第三收纳槽外。
Smart Images
Figure CN224790051U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electrical technology, specifically to a foldable plug. Background Technology
[0002] A plug is a common type of electrical component used to connect appliances to a power source. Most existing plugs have their prongs fixed to one side of the casing, making them non-foldable and space-consuming during transport. Furthermore, even when not in use, the prongs remain exposed to the external environment, making them susceptible to moisture, dust, and other contaminants, potentially leading to poor contact or electrical leakage. Additionally, the prongs' long-term exposure to the external environment makes them vulnerable to impacts and pressure, causing bending and deformation, severely impacting their lifespan. Utility Model Content
[0003] The purpose of this utility model is to address the shortcomings and deficiencies of the existing technology by providing a foldable plug that is easy to carry, protects the plug pins, reduces damage to the plug pins from external forces, and reduces space occupation when not in use.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a foldable plug, characterized in that it includes: a base, a first pin, a second pin, a third pin, and a linkage component movably disposed within the base; The first pin, the second pin, and the third pin are rotatably assembled on the base; The linkage component is used to realize the linkage between the first pin, the second pin and the third pin, and is provided with a first end and a second end disposed opposite to the first end; The two sides of one end of the first pin are respectively assembled on the first end, and the two ends of the second pin and the third pin are respectively assembled on the two sides of the second end; The outer wall of the base is provided with a first storage slot, a second storage slot, and a third storage slot for accommodating the first pin, the second pin, and the third pin, respectively.
[0005] The present invention further provides that the linkage includes: a connecting rod having a first end and a second end, and a synchronous shaft; the connecting rod is movably disposed within the base, and there are two connecting rods; the synchronous shaft is used to connect the second ends of the two connecting rods; The first ends of the two connecting rods are respectively located on both sides of one end of the first pin, and are used to connect the two sides of one end of the first pin; The second ends of both connecting rods are located between the second pin and the third pin, and one end of the second pin and the third pin are respectively connected to the second ends of the two connecting rods.
[0006] The present invention is further provided that the first end has a first rotating hole and the second end has a second rotating hole; The first pin has a first connecting shaft on both sides of the first rotating end that is rotatably mounted on the base, with free ends inserted into the first rotating hole; The second pin has a second rotating end that is rotatably mounted on the base, and a second connecting shaft with its free end inserted into the second rotating hole is provided on the side near the connecting rod. The third pin has a third rotating end that is rotatably mounted on the base. On the side near the connecting rod, there is a third connecting shaft with a free end inserted into the second rotating hole.
[0007] The present invention is further provided with a limiting groove on the first rotating end and / or the second rotating end and / or the third rotating end, and a limiting protrusion on the base; the limiting groove and the limiting protrusion cooperate to realize the positioning of the first pin and / or the second pin and / or the third pin.
[0008] The present invention further provides that the first rotating end, the second rotating end, and the third rotating end are all provided with the limiting groove; and three limiting protrusions are provided, each corresponding to one of the limiting grooves on the first rotating end, the second rotating end, and the third rotating end respectively. When all three limiting protrusions are placed into the limiting groove, one end of the first pin, the second pin, and the third pin is perpendicular to the outer plane of the first base.
[0009] The present invention further provides that the limiting protrusion is configured as an elastic protrusion.
[0010] The present invention is further provided with a first blocking part, a second blocking part and a third blocking part on the first rotating end, the second rotating end and the third rotating end; When the first pin, the second pin, and the third pin are respectively housed in the first storage slot, the second storage slot, and the third storage slot, the three limiting protrusions respectively abut against the first blocking part, the second blocking part, and the third blocking part.
[0011] The present invention further includes the following: the base includes a first cover and a second cover detachably mounted on the first cover; the first cover has a first storage groove, a second storage groove and a third storage groove.
[0012] The present invention further includes, wherein the foldable plug further includes: a first spring piece assembled on both sides of the first rotating end, a second spring piece assembled on one side of the second rotating end, and a third spring piece assembled on one side of the third rotating end; the first spring piece, the second spring piece, and the third spring piece are all disposed between the first cover and the second cover. The first rotating end is provided with a first extension shaft on both sides, the second rotating end is provided with a second extension shaft, and the third rotating end is provided with a third extension shaft; the first spring, the second spring, and the third spring respectively clamp the first extension shaft, the second extension shaft, and the third extension shaft.
[0013] The present invention further comprises that the cross-section of the end of the first extension shaft that is engaged with the first spring clip is rectangular; the cross-section of the end of the second extension shaft that is engaged with the second spring clip is rectangular; and the cross-section of the end of the third extension shaft that is engaged with the third spring clip is rectangular.
[0014] The beneficial effects of this utility model after adopting the above technical solution are as follows: In this utility model, the first pin, the second pin, and the third pin are rotatably assembled on the base; the linkage component is used to realize the linkage between the first pin, the second pin, and the third pin, and is provided with a first end and a second end opposite to the first end. The two sides of one end of the first pin are respectively assembled on the first end, and the two ends of the second pin and the third pin are respectively assembled on the two sides of the second end; the outer wall of the base is provided with a first storage slot, a second storage slot, and a third storage slot for storing the first pin, the second pin, and the third pin, respectively. This foldable plug has two states: storage and use. When this foldable plug is in the storage state, the first pin, the second pin, and the third pin are respectively stored in the first storage slot, the second storage slot, and the third storage slot to protect the pins, reduce damage to the pins from external forces, and reduce space occupation. It is also easy to carry, neatly stored, and avoids snagging other objects when not in use. When the foldable plug is in use, one end of the first, second, and third prongs is exposed outside the first, second, and third storage slots, respectively.
[0015] In addition, users only need to rotate one end of any one of the first, second, and third prongs toward the base or away from the base, and the other two prongs will rotate in tandem via the linkage. This allows the first, second, and third prongs to rotate simultaneously toward the first, second, and third storage slots (when folding), or simultaneously rotate toward the third storage slot (when extending), thus switching the foldable plug between the folded and retracted states. The overall operation is simple and quick. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the structure of this utility model in its stored state; Figure 2 This is a structural schematic diagram of the present invention in its stored state from another perspective; Figure 3 It corresponds Figure 2 A cross-sectional view along the AA direction; Figure 4 It corresponds Figure 3 A cross-sectional view along the BB direction; Figure 5 It corresponds Figure 4 A cross-sectional view along the CC direction; Figure 6 This is an exploded view of the structure of this utility model in its stored state; Figure 7 This is another exploded view of the structure of this utility model in its stored state; Figure 8 This is a structural schematic diagram of the present invention in use; Figure 9 It corresponds Figure 8 A cross-sectional view along the DD direction; Figure 10 It corresponds Figure 8 A cross-sectional view along the EE direction; Figure 11 It corresponds Figure 8 A cross-sectional view along the FF direction; Figure 12 This is a structural schematic diagram of the present invention in use from another perspective; Figure 13 This is an exploded view of the structure of this utility model in use; Figure 14 This is another exploded view of the structure of this utility model in use; Figure 15 This is an exploded view of another structure of this utility model in use; Figure 16 It corresponds Figure 15 A schematic diagram of the structure explosion from another perspective.
[0018] Explanation of reference numerals in the attached drawings: 100, base; 110, first cover; 111, first storage slot; 112, second storage slot; 113, third storage slot; 114, first through hole; 115, second through hole; 116, third through hole; 117, first rotating slot; 118, second rotating slot; 119, third rotating slot; 120, second cover; 200, first pin; 210, first rotating end; 220, first connecting shaft; 230, first blocking part; 240, first extension shaft; 250, first rotating part; 260, first insertion end; 300, second pin; 310, second rotating end; 320, second connecting shaft. ; 330, Second blocking part; 340, Second extension shaft; 350, Second rotating part; 360, Second insertion end; 400, Third pin; 410, Third rotating end; 420, Third connecting shaft; 430, Third blocking part; 440, Third extension shaft; 450, Third rotating part; 460, Third insertion end; 500, Linkage member; 510, Connecting rod; 511, First end; 5111, First rotating hole; 512, Second end; 5121, Second rotating hole; 520, Synchronous shaft; 610, Limiting groove; 620, Limiting protrusion; 710, First spring; 720, Second spring; 730, Third spring. Detailed Implementation
[0019] The present invention will be further described in detail below with reference to the accompanying drawings.
[0020] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive element, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.
[0021] This embodiment relates to a foldable plug, see reference... Figures 1-16The system includes: a base 100, a first pin 200, a second pin 300, a third pin 400, and a linkage 500 movably disposed within the base 100. The first pin 200, second pin 300, and third pin 400 are rotatably mounted on the base 100. The linkage 500 is used to achieve linkage between the first pin 200, second pin 300, and third pin 400, and the linkage 500 has a first end 511 and a second end 512 opposite to the first end 511. One end of the first pin 200 is respectively mounted on both sides of the first end 511, and one end of the second pin 300 and third pin 400 is respectively mounted on both sides of the second end 512. The outer wall of the base 100 has a first storage groove 111, a second storage groove 112, and a third storage groove 113 respectively for accommodating the first pin 200, second pin 300, and third pin 400. Specifically, this foldable plug has two states: storage and use. When the foldable plug is in the storage state, the first prong 200, the second prong 300, and the third prong 400 are respectively stored in the first storage slot 111, the second storage slot 112, and the third storage slot 113 to protect the prongs, reduce damage to the prongs from external forces, and reduce space occupation. It is also easy to carry, neatly stored, and avoids snagging on other objects when not in use. When the foldable plug is in the use state, one end of the first prong 200, the second prong 300, and the third prong 400 is exposed outside the first storage slot 111, the second storage slot 112, and the third storage slot 113. In addition, users only need to rotate one end of any one of the first pin 200, the second pin 300, and the third pin 400 toward the base 100 or away from the base 100. This will cause the other two pins to rotate via the linkage 500. This allows the first pin 200, the second pin 300, and the third pin 400 to rotate simultaneously toward the first storage slot 111, the second storage slot 112, and the third storage slot 113, i.e., to retract synchronously when folding, or to rotate simultaneously toward the direction away from the first storage slot 111, the second storage slot 112, and the third storage slot 113, i.e., to unfold synchronously when extending. This completes the switching between the foldable plug's storage state and the storage state. The overall operation process is simple and quick.
[0022] In this embodiment, refer to Figure 12 as well as Figures 15-16 The base 100 includes a first cover 110 and a second cover 120. The second cover 120 is detachably mounted on the first cover 110. The first cover 110 has a first storage groove 111, a second storage groove 112, and a third storage groove 113. In this embodiment, the first cover 110 and the second cover 120 are snap-fitted together and then locked in place using screws or other fasteners.
[0023] Furthermore, referring to Figures 15-16The linkage 500 is configured as a crank connecting rod 510. Specifically, the linkage 500 includes: a connecting rod 510 with a first end 511 and a second end 512, and a synchronous shaft 520. The connecting rod 510 is movably disposed within the base 100, and there are two of them; the synchronous shaft 520 connects the second ends 512 of the two connecting rods 510; the first ends 511 of the two connecting rods 510 are respectively located on both sides of one end of the first pin 200, and are used for connection to both sides of one end of the first pin 200; the second ends 512 of the two connecting rods 510 are both located between the second pin 300 and the third pin 400, and one end of the second pin 300 and the third pin 400 are respectively connected to the second ends 512 of the two connecting rods 510. The two connecting rods 510 cooperate with the synchronous shaft 520 to achieve synchronous rotation of the first pin 200, the second pin 300, and the third pin 400, avoiding jamming of a single pin when switching between retracted and retracted states. Furthermore, the two connecting rods 510 are integrated with the synchronous shaft 520 to ensure accurate power transmission, guarantee synchronous movement of the two connecting rods 510, and avoid jamming or misalignment when the various pins are linked.
[0024] In this embodiment, the first end 511 has a first rotating hole 5111, and the second end 512 has a second rotating hole 5121. The end of the first pin 200 that is rotatably mounted on the base 100 is designated as a first rotating end 210. First connecting shafts 220 are provided on both sides of the first rotating end 210, and the free ends of the first connecting shafts 220 are inserted into the first rotating hole 5111. The end of the second pin 300 that is rotatably mounted on the base 100 is designated as a second rotating end 310. A second connecting shaft 320 is provided on the side of the second rotating end 310 near the connecting rod 510, and the free end of the second connecting shaft 320 is inserted into the second rotating hole 5121. The end of the third pin 400 that is rotatably mounted on the base 100 is designated as a third rotating end 410. A third connecting shaft 420 is provided on the side of the third rotating end 410 near the connecting rod 510, and the free end of the third connecting shaft 420 is inserted into the second rotating hole 5121. When any one of the first pin 200, the second pin 300, or the third pin 400 is rotated, the connecting rod 510 and the synchronous shaft 520 are driven to rotate via the first connecting shaft 220, the second connecting shaft 320, or the third connecting shaft 420, thereby driving the other two pins to rotate.
[0025] In this embodiment, refer to Figure 7 as well as Figure 14The first cover 110 is provided with a first through hole 114, a second through hole 115 and a third through hole 116 that connect the first storage groove 111, the second storage groove 112 and the third storage groove 113 respectively. Furthermore, the first cover 110 has a first rotating groove 117 on the side facing the second cover 120 and located on both sides of the first through hole 114, for the first rotating end 210 of the first pin 200 to rotate; the first cover 110 has a second rotating groove 118 on the side facing the second cover 120 and located on both sides of the second through hole 115, for the second rotating end 310 of the second pin 300 to rotate; the first cover 110 has a third rotating groove 119 on the side facing the second cover 120 and located on both sides of the third through hole 116, for the third rotating end 410 of the third pin 400 to rotate; the first rotating end 210, the second rotating end 310, and the third rotating end 410 are respectively provided with a first rotating part 250, a second rotating part 350, and a third rotating part 450 that rotatably cooperate with the first rotating groove 117, the second rotating groove 118, and the third rotating groove 119. The cross-section of the first rotating part 250, the second rotating part 350, and the third rotating part 450 is circular. In this embodiment, the first connecting shaft 220, the second connecting shaft 320, and the third connecting shaft 420 are respectively disposed on the first rotating part 250, the second rotating part 350 near the connecting rod 510, and the third rotating part 450 near the connecting rod 510. When the first pin 200, the second pin 300, and the third pin 400 rotate, the movement trajectories of the first connecting shaft 220, the second connecting shaft 320, and the third connecting shaft 420 are respectively arcs centered on the axes of the first rotating part 250, the second rotating part 350, and the third rotating part 450.
[0026] In this embodiment, refer to Figure 12 The first pin 200, the second pin 300 and the third pin 400 are respectively housed in the first storage slot 111, the second storage slot 112 and the third storage slot 113. One end of each slot is respectively set as the first insertion end 260, the second insertion end 360 and the third insertion end 460. The first insertion end 260, the second insertion end 360 and the third insertion end 460 are used to connect to electrical devices such as sockets.
[0027] Furthermore, referring to Figures 2-5 as well as Figures 8-10The first rotating end 210 and / or the second rotating end 310 and / or the third rotating end 410 are provided with limiting grooves 610, and the base 100 is provided with limiting protrusions 620; the limiting grooves 610 and the limiting protrusions 620 cooperate to position the first pin 200 and / or the second pin 300 and / or the third pin 400. In this embodiment, the first rotating end 210, the second rotating end 310 and the third rotating end 410 are provided with limiting grooves 610, and the base 100 is provided with limiting protrusions 620; the limiting grooves 610 and the limiting protrusions 620 cooperate to position the first pin 200, the second pin 300 and the third pin 400. Specifically, the first rotating end 210, the second rotating end 310, and the third rotating end 410 are all provided with limiting grooves 610; three limiting protrusions 620 are provided, each corresponding to a limiting groove 610 on the first rotating end 210, the second rotating end 310, and the third rotating end 410 respectively; when all three limiting protrusions 620 are placed in the limiting grooves 610, one end of the first pin 200, the second pin 300, and the third pin 400 is perpendicular to the outer plane of the first base 100. At this time, the foldable plug is in use, that is, the first insertion end 260, the second insertion end 360, and the third insertion end 460 have respectively disengaged from the first storage slot 111, the second storage slot 112, and the third storage slot 113. Three limiting protrusions 620 respectively engage with limiting grooves 610 on the first rotating end 210, the second rotating end 310, and the third rotating end 410 to limit and fix the first insertion end 200, the second insertion end 300, and the third insertion end 400, ensuring that the first insertion end 260, the second insertion end 360, and the third insertion end 460 remain perpendicular to the outer plane of the first cover 110, preventing accidental retraction of the first insertion end 260, the second insertion end 360, and the third insertion end 460 during use. In some embodiments, the first rotating end 210, the second rotating end 310, or the third rotating end 410 is provided with a limiting groove 610, and the base 100 is provided with a limiting protrusion 620; the limiting groove 610 and the limiting protrusion 620 engage to position the first insertion end 200, the second insertion end 300, or the third insertion end 400. In this embodiment, the limiting protrusion 620 is configured as an elastic protrusion.
[0028] Furthermore, referring to Figures 2-5 as well as Figures 8-10The first rotating end 210, the second rotating end 310, and the third rotating end 410 are each provided with a first blocking part 230, a second blocking part 330, and a third blocking part 430. When the first pin 200, the second pin 300, and the third pin 400 are respectively stored in the first storage groove 111, the second storage groove 112, and the third storage groove 113, the three limiting protrusions 620 respectively abut against the first blocking part 230, the second blocking part 330, and the third blocking part 430 to prevent the first pin 200, the second pin 300, and the third pin 400 from accidentally disengaging from the first storage groove 111, the second storage groove 112, and the third storage groove 113 when the foldable plug is in the stored state. That is, the first insertion end 260, the second insertion end 360, and the third insertion end 460 are accidentally disengaged from the first storage groove 111, the second storage groove 112, and the third storage groove 113. In this embodiment, the side between the limiting groove 610 on the first rotating end 210 and the first blocking part 230 is set as an arc surface; the side between the limiting groove 610 on the second rotating end 310 and the second blocking part 330 is set as an arc surface; the side between the limiting groove 610 on the third rotating end 410 and the third blocking part 430 is set as an arc surface; when any one of the first insertion end 260, the second insertion end 360 and the third insertion end 460 is moved, causing the other two to rotate as well, so that the foldable plug switches from the use state to the storage state, the limiting protrusion 620 engages with the limiting groove 610, passes through the arc surface on each rotating end, and then abuts against each blocking part, so that there is a damping effect during the rotation. The first blocking part 230, the second blocking part 330, and the third blocking part 430 are used to prevent the various insertion ends from accidentally disengaging from their respective grooves when the foldable plug is in the retracted state, ensuring that the various insertion ends can only disengage from their respective grooves when the user manually moves the first insertion end 260, the second insertion end 360, or the third insertion end 460.
[0029] In this embodiment, refer to Figures 6-7 as well as Figures 13-14The foldable plug further includes: a first spring contact 710 mounted on both sides of the first rotating end 210, a second spring contact 720 mounted on one side of the second rotating end 310, and a third spring contact 730 mounted on one side of the third rotating end 410; the first spring contact 710, the second spring contact 720, and the third spring contact 730 are all disposed between the first cover 110 and the second cover 120. The first rotating end 210 has a first extension shaft 240 on both sides, the second rotating end 310 has a second extension shaft 340, and the third rotating end 410 has a third extension shaft 440; the first spring contact 710, the second spring contact 720, and the third spring contact 730 respectively clamp the first extension shaft 240, the second extension shaft 340, and the third extension shaft 440. Regardless of whether the foldable plug is in use or in storage, the first spring contact 710, the second spring contact 720, and the third spring contact 730 always clamp the first extension shaft 240, the second extension shaft 340, and the third extension shaft 440 respectively to ensure power conduction. In this embodiment, the first pin 200 is the ground pin, and the second pin 300 and the third pin 400 are respectively a live pin and a neutral pin. In this embodiment, the first spring 710, the second spring 720, and the third spring 730 are all configured as hairpin-type metal springs.
[0030] Furthermore, referring to Figures 15-16 The cross-section of the end of the first extension shaft 240 that clamps with the first spring piece 710 is rectangular. The cross-section of the end of the second extension shaft 340 that clamps with the second spring piece 720 is rectangular. The cross-section of the end of the third extension shaft 440 that clamps with the third spring piece 730 is rectangular. Specifically, the cross-section of the end of the first extension shaft 240 that clamps with the first spring piece 710 is square. The cross-section of the end of the second extension shaft 340 that clamps with the second spring piece 720 is square. The cross-section of the end of the third extension shaft 440 that clamps with the third spring piece 730 is square. When the rotation angle of each pin is greater than 45°, the apex of one end of the first extension shaft 240, the second extension shaft 340, and the third extension shaft 440 respectively press against the first spring 710, the second spring 720, and the third spring 730. The first spring 710, the second spring 720, and the third spring 730 exert a compressive force on the first extension shaft 240, the second extension shaft 340, and the third extension shaft 440 to position each pin.
[0031] The above is only used to illustrate the technical solution of this utility model and not to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.
Claims
1. A foldable plug, characterized in that, include: The base (100), the first pin (200), the second pin (300), the third pin (400), and the linkage (500) movably disposed within the base (100); The first pin (200), the second pin (300), and the third pin (400) are rotatably mounted on the base (100); The linkage component (500) is used to realize the linkage between the first pin (200), the second pin (300) and the third pin (400), and is provided with a first end (511) and a second end (512) disposed opposite to the first end (511); The two sides of one end of the first pin (200) are respectively assembled on the first end (511), and the two ends of the second pin (300) and the third pin (400) are respectively assembled on the two sides of the second end (512); The outer wall of the base (100) is provided with a first storage slot (111), a second storage slot (112), and a third storage slot (113) for accommodating the first pin (200), the second pin (300), and the third pin (400).
2. The foldable plug according to claim 1, characterized in that, The linkage (500) includes: a connecting rod (510) having a first end (511) and a second end (512) and a synchronous shaft (520); the connecting rod (510) is movably disposed within the base (100) and there are two of them; the synchronous shaft (520) is used to connect the second ends (512) of the two connecting rods (510); The first ends (511) of the two connecting rods (510) are respectively located on both sides of one end of the first pin (200) and are connected to both sides of one end of the first pin (200); The second ends (512) of both connecting rods (510) are located between the second pin (300) and the third pin (400), and one end of the second pin (300) and the third pin (400) are respectively connected to the second ends (512) of the two connecting rods (510).
3. The foldable plug according to claim 2, characterized in that, The first end (511) has a first rotating hole (5111), and the second end (512) has a second rotating hole (5121); The first pin (200) has a first rotating end (210) on the base (100) for rotatable assembly, and the two sides are provided with a first connecting shaft (220) with free ends inserted into the first rotating hole (5111); The second pin (300) has a second rotating end (310) for rotatably mounted on the base (100) and a second connecting shaft (320) with its free end inserted into the second rotating hole (5121) on the side near the connecting rod (510). The third rotating end (410) on the third pin (400) is rotatably mounted on the base (100), and a third connecting shaft (420) with its free end inserted into the second rotating hole (5121) is provided on the side near the connecting rod (510).
4. The foldable plug according to claim 3, characterized in that, The first rotating end (210) and / or the second rotating end (310) and / or the third rotating end (410) are provided with a limiting groove (610), and the base (100) is provided with a limiting protrusion (620); the limiting groove (610) and the limiting protrusion (620) cooperate to realize the positioning of the first pin (200) and / or the second pin (300) and / or the third pin (400).
5. The foldable plug according to claim 4, characterized in that, The first rotating end (210), the second rotating end (310), and the third rotating end (410) are all provided with the limiting groove (610); there are three limiting protrusions (620), which correspond one-to-one with the limiting grooves (610) on the first rotating end (210), the second rotating end (310), and the third rotating end (410); When all three limiting protrusions (620) are placed in the limiting groove (610), one end of the first pin (200), the second pin (300) and the third pin (400) are perpendicular to the outer plane of the base (100).
6. The foldable plug according to claim 4, characterized in that, The limiting protrusion (620) is configured as an elastic protrusion.
7. The foldable plug according to claim 5, characterized in that, The first rotating end (210), the second rotating end (310) and the third rotating end (410) are each provided with a first blocking part (230), a second blocking part (330) and a third blocking part (430); When the first pin (200), the second pin (300) and the third pin (400) are respectively housed in the first storage slot (111), the second storage slot (112) and the third storage slot (113), the three limiting protrusions (620) respectively abut against the first blocking part (230), the second blocking part (330) and the third blocking part (430).
8. The foldable plug according to any one of claims 3-7, characterized in that, The base (100) includes: a first cover (110) and a second cover (120) detachably mounted on the first cover (110); the first cover (110) is provided with a first storage slot (111), a second storage slot (112) and a third storage slot (113).
9. The foldable plug according to claim 8, characterized in that, The foldable plug further includes: a first spring piece (710) assembled on both sides of the first rotating end (210), a second spring piece (720) assembled on one side of the second rotating end (310), and a third spring piece (730) assembled on one side of the third rotating end (410); the first spring piece (710), the second spring piece (720), and the third spring piece (730) are all disposed between the first cover (110) and the second cover (120); The first rotating end (210) is provided with a first extension shaft (240) on both sides, the second rotating end (310) is provided with a second extension shaft (340), and the third rotating end (410) is provided with a third extension shaft (440); the first spring piece (710), the second spring piece (720), and the third spring piece (730) respectively clamp the first extension shaft (240), the second extension shaft (340), and the third extension shaft (440).
10. The foldable plug according to claim 9, characterized in that, The cross-section of the end of the first extension shaft (240) that clamps with the first spring piece (710) is rectangular; the cross-section of the end of the second extension shaft (340) that clamps with the second spring piece (720) is rectangular; and the cross-section of the end of the third extension shaft (440) that clamps with the third spring piece (730) is rectangular.