Rotary extending pin assembly and power supply plug

Abstract

The present application relates to a rotary extending pin assembly and a power supply plug. The rotary extending pin assembly comprises a housing, a pin support, and a pin assembly. The housing comprises a first housing wall. The pin support comprises a guide column and a support seat connected to the guide column. An accommodating cavity is formed between the support seat and the housing. A guide chute is provided on the guide column. The pin assembly comprises a base and a pin body. The base is provided with a sliding block slidably embedded in the guide chute. A limiting column connected to the first housing wall is arranged in the accommodating cavity. The base is provided with a limiting groove. The limiting column is slidably embedded in the limiting groove. The present application implements an extending action of the pin body, so that the pin body is convenient to carry, and further the pin body can be prevented from being exposed to an outside environment and being damaged.

Description

Rotating telescopic plug assembly and power plug

[0001] Related applications

[0002] This application claims priority to Chinese Utility Model Patent Application No. 202423068815.1, filed on December 11, 2024, entitled "Rotary Telescopic Plug Assembly and Power Plug". Technical Field

[0003] This application relates to the field of power supply devices, and more particularly to a rotary telescopic plug assembly and a power plug. Background Technology

[0004] A power plug is an electrical device that supplies power to electronic products by connecting to a socket. Commonly used power plugs consist of a main body with a circuit board and prongs for connecting to the socket. The prongs are mostly fixed and extend beyond the main body. This means that when carrying or not using the power plug, the prongs cannot be retracted into the main body. This not only makes it space-consuming and inconvenient to carry, but the fixed prongs are also prone to contact with other objects during transport, potentially causing scratches and damage to the prongs themselves. Furthermore, the fixed prongs, when exposed to the external environment for extended periods, are more susceptible to corrosion, scratches, and damage, increasing safety hazards during use. Summary of the Invention

[0005] To address the problems existing in the prior art, this application provides a rotary telescopic plug assembly and a power plug, which can realize the extension or retraction of the plug body. It can not only be smoothly plugged into the socket, but also take up less space and is easy to carry when the plug body is retracted. In addition, it can prevent the plug body from being exposed to the external environment and being damaged, thus helping to extend the service life of the power plug.

[0006] The objective of this application can be achieved using the following technical solutions:

[0007] This application provides a rotary telescopic pin assembly, the rotary telescopic pin assembly comprising:

[0008] The outer shell includes a first shell wall, on which a through hole is provided;

[0009] The pin bracket includes a guide post and a rotatably mounted support base. The support base is located at the bottom of the outer shell and is disposed opposite to the first shell wall. The support base and the outer shell enclose a receiving cavity. The guide post is located in the receiving cavity and one end of the guide post is connected to the support base. The other end of the guide post extends toward the first shell wall. The outer wall of the guide post has a circumferentially arranged spiral guide groove.

[0010] A pin assembly includes a base and a pin body disposed on the base. The base is sleeved on the guide post, and the inner wall of the base has at least one slider, which is slidably embedded in the guide groove.

[0011] A limiting post is provided in the accommodating cavity. One end of the limiting post is connected to the first shell wall, and the other end of the limiting post extends toward the support base. The base has a limiting groove, and the limiting post is slidably embedded in the limiting groove.

[0012] This application provides a power plug, which includes a PCB board and the aforementioned rotary telescopic pin assembly, wherein the PCB board is connected to the second conductive spring in the rotary telescopic pin assembly.

[0013] When the insert body in the rotary telescopic pin assembly is in the extended state, the insert body is electrically connected to the PCB board in sequence through the first conductive spring and the second conductive spring.

[0014] The beneficial effects of this application are:

[0015] 1. This rotary telescopic plug assembly, through the telescopic control of the plug body, not only allows for smooth insertion into the socket when the plug body is extended, but also has the advantages of occupying less space and being easy to carry when the plug body is retracted into the shell. In addition, when the plug body is retracted into the shell, it can also prevent the plug body from being exposed to the external environment and being damaged, thus helping to extend the service life of the power plug.

[0016] Second, in this rotary telescopic pin assembly, the guide post that drives the pin assembly to move vertically (i.e., the pin body performs telescopic movements) is located in the middle of the housing, while the conductive spring structure for connecting with the pin body is located on the outer periphery of the guide post. This ensures that driving the pin assembly will not interfere with the conductive structure inside the housing, guaranteeing smooth and stable docking between the pin body and the conductive spring. In addition, this layout provides more assembly space for electrical connection structures such as the conductive spring, and the movement of the pin assembly will not affect the stability of the circuit connection of the conductive spring and other structures, ensuring the stable operation of the pin assembly.

[0017] Third, the rotating telescopic plug assembly meets the safety regulations (GB1002-2024). When the plug assembly extends to the normal use position, it locks in place to ensure normal use. In contrast, similar structures of existing plug assemblies will retract after being subjected to force. This application can ensure the stable use of the plug. Attached Figure Description

[0018] The following figures are intended only to illustrate and explain this application and do not limit the scope of this application. Wherein:

[0019] Figure 1 is a perspective view of the retracted state of the pins in the rotary telescopic pin assembly of this application;

[0020] Figure 2 is a schematic diagram of the internal structure of the rotary telescopic pin assembly of this application when the pin is in the retracted state;

[0021] Figure 3 is a schematic diagram of the rotating telescopic pin assembly of this application with the outer shell hidden and the pins in the retracted state.

[0022] Figure 4 is a perspective view of the pins in the extended state of the rotary telescopic pin assembly of this application;

[0023] Figure 5 is a schematic diagram of the internal structure of the rotary telescopic pin assembly of this application with the pins in the extended state.

[0024] Figure 6 is an exploded view of the rotary telescopic pin assembly of this application;

[0025] Figure 7 is a front cross-sectional view of the rotary telescopic pin assembly of this application with the outer casing hidden and the pins in the retracted state;

[0026] Figure 8 is a schematic cross-sectional view of the CC position in Figure 7;

[0027] Figure 9 is a magnified view of a portion of position A in Figure 2;

[0028] Figure 10 is a cross-sectional schematic diagram of the base location in the rotary telescopic pin assembly of this application;

[0029] Figure 11 is a front view of the rotary telescopic pin assembly of this application with the outer casing hidden and the pins in the retracted state;

[0030] Figure 12 is a schematic diagram showing the position of the slider when the pin is extended to its maximum position in the rotary telescopic pin assembly of this application;

[0031] Figure 13 is a front cross-sectional view of the slider position when the pin is extended to its maximum position in the rotary telescopic pin assembly of this application;

[0032] Figure 14 is a magnified view of a portion of position B in Figure 13;

[0033] Figure 15 is a partial schematic diagram of the location of the first conductive spring in the rotary telescopic pin assembly of this application;

[0034] Figure 16 is a schematic diagram showing the connection position between the first conductive block and the first conductive spring when the pin is extended to its maximum position in the rotary telescopic pin assembly of this application. Detailed Implementation

[0035] The technical solutions of this application will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate this application and are not intended to limit the scope of this application. After reading this application, any modifications of this application in various equivalent forms by those skilled in the art fall within the scope defined by the appended claims.

[0036] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intervening element. The terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., used herein to indicate direction, refer to the directions shown in Figure 5. These terms are used to more clearly illustrate the structure of this application and do not represent the only possible implementation.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0038] Implementation Method 1

[0039] As shown in Figures 1 to 16, this application provides a rotary telescopic plug assembly, which includes a housing 1, a plug bracket 2, and a plug assembly 3. The housing 1 has a cylindrical structure with an open bottom and a closed top. The housing 1 includes a first housing wall 103 and a rotatably disposed support base 203. The bottom of the housing 1 has an opening, and the first housing wall 103 is located at the top of the housing 1 (on the side opposite to the opening). A through hole 101 is provided on the first housing wall 103, through which the plug body 302 described below in the plug assembly extends to the outside of the housing 1. The plug bracket 2 includes a guide post 201 and a rotatably disposed support base 203, which is located at the bottom of the housing 1. The support base 203 is arranged opposite to the first shell wall 103 and has an annular structure. The support base 203 is rotatably disposed at the opening (the support base 203 and the opening of the outer shell 1 are rotatably connected). The support base 203 and the outer shell 1 enclose a receiving cavity 5. When the outer shell 1 and the plug bracket 2 are assembled, the guide post 201 is located in the receiving cavity 5. The bottom end of the guide post 201 is connected to the support base 203. The guide post 201 extends vertically to its top end near the first shell wall 103 (that is, the top end of the guide post 201 extends in the direction close to the first shell wall 103). The outer wall of the guide post 201 has a spiral guide groove 20 arranged circumferentially along the guide post 201. 2; The pin assembly 3 includes a ring-shaped base 301 and a pin body 302 disposed on the base 301. The bottom end of the pin body 302 is connected to the base 301, and the top end of the pin body 302 extends vertically upward. The base 301 is movably fitted onto the guide post 201. The inner wall of the base 301 has at least one slider 3012, which is slidably embedded in the guide groove 202. A limiting post 102 is vertically disposed in the accommodating cavity 5. The top end of the limiting post 102 is fixedly connected to the first shell wall 103, and the bottom end of the limiting post 102 extends toward the support base 203 (i.e., extends vertically downward). The base 301 has a limiting groove 3011 for limiting... The post 102 is slidably embedded in the limiting groove 3011. By rotating the outer shell 1 and / or the pin bracket 2, the slider 3012 will slide in the guide groove 202. However, since the sliding engagement of the limiting post 102 and the limiting groove 3011 can limit the pin assembly 3 in the circumferential direction, when the outer shell 1 and / or the pin bracket 2 are subjected to the driving force of circumferential rotation, the circumferential sliding of the slider 3012 in the guide groove 202 will be transformed into the axial movement of the pin body 302 along the guide post 201, thereby enabling the pin assembly 3 to move along the axial direction of the guide post 201, so that the pin body 302 on the pin assembly 3 can extend out of the outer shell 1 or retract into the outer shell 1 through the through hole 101.

[0040] In practical operation, the extension and retraction of the insert body 302 can be controlled by rotating only the plug bracket 2, while the outer shell 1 can be fixed in different static states. For example, rotating the plug bracket 2 clockwise will cause the insert body 302 to extend out of the outer shell 1, and rotating the plug bracket 2 counterclockwise will cause the insert body 302 to retract into the outer shell 1. Alternatively, the extension and retraction of the insert body 302 can be controlled by rotating only the outer shell 1, while the plug bracket 2 can be fixed in different static states. For example, rotating the outer shell 1 clockwise will cause the insert body 302 to extend out of the outer shell 1, and rotating the outer shell 1 counterclockwise will cause the insert body 302 to retract into the outer shell 1. Of course, the plug bracket 2 and the outer shell 1 can also be rotated simultaneously (ensuring that the rotation direction of the plug bracket 2 is opposite to the rotation direction of the outer shell 1). For example, rotating the plug bracket 2 clockwise and the outer shell 1 counterclockwise will cause the insert body 302 to extend out of the outer shell 1, and rotating the plug bracket 2 counterclockwise and the outer shell 1 clockwise will cause the insert body 302 to retract into the outer shell 1.

[0041] This application utilizes a spiral guide groove 202 on the outer wall of the guide post 201 to slide and engage with the slider 3012 on the pin assembly 3, and a limiting post 102 to slide and engage with the limiting groove 3011 on the base 301 of the pin assembly 3, to limit the circumferential rotation of the pin assembly 3. Therefore, when the outer shell 1 and / or the pin bracket 2 are rotated, the pin bracket 2 only moves axially along the guide post 201, thereby allowing the pin body 302 on the pin assembly 3 to be accessed via the through-hole on the outer shell 1. The hole 101 extends out of the outer shell 1 or retracts into the outer shell 1 to realize the extension and retraction of the plug body 302. The plug assembly in this application can not only be smoothly connected to the socket through the plug body 302 in the extended state, but also has the advantages of occupying less space and being easy to carry when the plug body 302 is retracted into the outer shell 1. In addition, when the plug body 302 is retracted into the outer shell 1, it can also prevent the plug body 302 from being exposed to the external environment and being damaged, which helps to extend the service life of the power plug.

[0042] In an optional embodiment of this application, as shown in Figures 2, 3, 5 to 7, 11, and 13, in the vertical direction, the guide post 201 extends from the support base 203 to a position close to the first shell wall 103, and the guide groove 202 extends from the bottom end of the guide post 201 to the top end of the guide post 201. A circular stop plate 206 is provided at the top end of the guide post 201. The stop plate 206 is horizontally disposed at the top end of the guide post 201 and is connected to the guide post 201 by screws 207. The stop plate 206 is used to block the top end of the guide groove 202. When the slider 3012 slides to the top position of the guide groove 202, it can abut against the stop plate 206, thereby limiting the upward movement of the slider 3012 in the guide groove 202 and preventing the slider 3012 from slipping out of the guide groove 202. When the slider 3012 slides to the top of the guide groove 202, the length of the insert body 302 extending out of the outer shell 1 reaches its maximum. Of course, if the bottom of the guide groove 202 is not blocked, a stop plate 206 with the same structure can be set at the bottom of the guide groove 202, which also serves to prevent the slider 3012 from slipping out of the guide groove 202.

[0043] In an optional embodiment of this application, as shown in Figures 13 and 14, a first positioning groove 2021 is provided on the outer wall of the guide post 201 near the end of the first shell wall 103. The first positioning groove 2021 communicates with the guide slide 202. At least part of the stop plate 206 is located at the top of the first positioning groove 2021. A preset corner is formed between the first positioning groove 2021 and the guide slide 202. When the slider 3012 slides along the guide slide 202 to its top and changes its sliding trajectory at the corner position, it enters the first positioning groove 2021 and abuts against the bottom wall of the first positioning groove 2021. The first positioning groove 2021 supports the slider 3012 and prevents the slider 3012 from rotating backward and retracting along the guide slide 202.

[0044] Furthermore, as shown in Figure 14, there is a backstop protrusion 2022 on the inner wall of the position where the first positioning groove 2021 connects with the guide slide groove 202. When the insert body 302 extends out of the outer shell 1 through the through hole 101, the slider 3012 enters the first positioning groove 2021 through the guide slide groove 202. When the slider 3012 retracts, it abuts against the backstop protrusion 2022. The backstop protrusion 2022 stops the slider 3012, thereby realizing the positioning of the insert body 302 in the extended state, ensuring that the insert body 302 can maintain a stable position after extending out of the outer shell 1, thereby ensuring the stability of the plug assembly after docking with the socket. In addition, when the user operates the extension and retraction of the insert body 302, when the slider 3012 passes the anti-retraction protrusion 2022 and enters the first positioning groove 2021, the user will receive feedback in terms of operation feel. At this time, the user can know that the insert body 302 has extended to the preset length of the outer shell 1 and that the insert body 302 will not automatically rotate and retract at this position.

[0045] In an optional embodiment of this application, as shown in Figures 3, 6, 7, 11 to 13, 15, and 16, multiple surrounding plates 204 are provided on the support base 203. The surrounding plates 204 are vertically arranged plate-like structures, and their bottom ends are fixedly connected to the support base 203. The multiple surrounding plates 204 are arranged at intervals along the circumference of the guide post 201, that is, the surrounding plates 204 surround the guide post 201 in the middle. There is a certain distance between the surrounding plates 204 and the guide post 201. The guide post 201 and the retracted pin assembly 3 are both located inside the multiple surrounding plates 204, which provides a certain degree of protection for the guide post 201 and the retracted pin assembly 3. Moreover, the surrounding plates 204 can provide a placement position for the conductive spring and corresponding wires, ensuring the rational utilization of the space within the accommodating cavity 5.

[0046] Furthermore, as shown in Figures 5, 6, 12, 15, and 16, a first conductive spring 6 is provided on the inner wall of the enclosure 204, and a second conductive spring 7 is provided on the support base 203. The top end of the first conductive spring 6 is located at the top of the enclosure 204, and the bottom end of the first conductive spring 6 extends to the support base 203 and connects with the second conductive spring 7. The second conductive spring 7 is used for electrical connection with the PCB board. When the insert body 302 extends out of the outer shell 1 through the through hole 101, the insert body 302 contacts the top end of the first conductive spring 6, thereby realizing the electrical connection between the insert body 302 and the PCB board through the first conductive spring 6 and the second conductive spring 7. For ease of assembly and disassembly, the first conductive spring 6 and the second conductive spring 7 are arranged as two separate parts. Of course, in some embodiments, the first conductive spring 6 and the second conductive spring 7 can also be set as an integral structure, as long as it can smoothly connect the insert body 302 and the PCB board.

[0047] Furthermore, as shown in Figures 6, 7, 12, 15, and 16, a first conductive block 3013 extends from the outer wall of the base 301. The first conductive block 3013 is connected to the insert body 302. The top of the first conductive spring 6 has a second conductive block 601. When the insert body 302 extends out of the outer shell 1 through the through hole 101, the first conductive block 3013 and the second conductive block 601 are aligned. Through the pairing of the first conductive block 3013 and the second conductive block 601, the insert body 302 and the first conductive spring 6 are precisely aligned, ensuring the stability of conductivity. There are two first conductive springs 6 and two second conductive springs 7, each corresponding to one other. The two first conductive springs 6 are symmetrically arranged on the inner walls of the two oppositely arranged enclosures 204. When the insert body 302 extends out of the outer shell 1 through the through hole 101, the tops of the two first conductive springs 6 contact the bottoms of the two insert bodies 302.

[0048] In an optional embodiment of this application, as shown in Figures 2, 3, 5 to 7, 11 to 13, 15, and 16, first positioning protrusions 205 are respectively provided on the bottom outer walls of the multiple enclosure plates 204; the rotary telescopic pin assembly also includes an annular pressure cap 4, the inner diameter of which matches the outer diameter of the annular column formed by the multiple enclosure plates 204. The pressure cap 4 is fitted around the outer periphery of the multiple enclosure plates 204, and the top of the pressure cap 4 abuts against the bottom of the first positioning protrusion 205, and the bottom of the pressure cap 4 abuts against the top of the support base 203, thereby realizing the assembly and positioning of the pressure cap 4. The opening of the outer shell 1 and the pressure cap 4 can be engaged by an annular groove and an annular protrusion. The support base 203 is rotatably connected to the opening of the outer shell 1 through the pressure cap 4, thereby realizing the rotatable connection between the outer shell 1 and the pin bracket 2.

[0049] In an optional embodiment of this application, as shown in Figure 8, the bottom of the enclosure 204 has a second positioning protrusion 208, and the outer wall of the base 301 has a second positioning groove. When the insert body 302 retracts into the outer shell 1 through the through hole 101, the second positioning protrusion 208 is embedded in the second positioning groove. Thus, in the retracted state of the insert body 302, the circumferential rotation of the pin assembly 3 is restricted by the cooperation between the second positioning protrusion 208 and the second positioning groove, thereby achieving circumferential positioning of the pin assembly 3 and preventing the insert body 302 from protruding out of the outer shell 1 when the pin assembly is not in use. Since the second positioning protrusion 208 has a certain elasticity, when the user rotates the outer shell 1 and / or the pin bracket 2 with force, the second positioning protrusion 208 can slide out of the second positioning groove. At this time, continuing to rotate the outer shell 1 and / or the pin bracket 2 will allow the insert body 302 to protrude out of the outer shell 1. Of course, the second positioning protrusion 208 can also be set at the bottom of the support base 203 to perform circumferential positioning of the insert body 302 in the retracted state.

[0050] Furthermore, the number of second positioning protrusions 208 can be multiple (such as two symmetrically arranged), and the number of second positioning slots can also be multiple. Multiple second positioning slots correspond one-to-one with multiple second positioning protrusions 208, thereby improving the stability of circumferential positioning of the insert body 302 in the contracted state.

[0051] In another optional embodiment of this application, as shown in Figure 7, a circular boss 2011 is provided at the bottom of the guide post 201 along the circumference of the guide post 201. When the insert body 302 retracts into the housing 1 through the through hole 101, the bottom of the base 301 abuts against the top of the boss 2011, thereby achieving axial positioning of the pin assembly 3 and ensuring that the pin assembly 3 cannot continue to move downward. In this application, when the insert body 302 retracts into the housing 1 through the through hole 101, circumferential and axial positioning of the pin assembly 3 can be achieved. Therefore, when the insert body 302 is retracted into the housing 1, the insert body 302 will only extend out of the housing 1 if the user provides sufficient external force to drive the housing 1 and / or the pin bracket 2 to rotate. This ensures the stable positioning of the insert body 302 within the housing 1, avoids the danger of the insert body 302 accidentally extending out of the housing 1 during carrying, causing scratches to foreign objects or the user, and also avoids damage to the insert body 302.

[0052] Furthermore, as shown in Figures 8 and 10, there are two limiting grooves 3011 and two limiting posts 102. The two limiting grooves 3011 correspond one-to-one with the two limiting posts 102. The two limiting grooves 3011 are symmetrically arranged on the outer wall of the base 301, and the two limiting posts 102 are slidably embedded in the corresponding limiting grooves 3011, thereby playing a role in providing stable guidance for the pin assembly 3 in the vertical direction.

[0053] In an optional embodiment of this application, the pin assembly 3 is an AC pin assembly, with two pin bodies 302 and two through holes 101, each corresponding to one pin body 302. A chamfered structure 1011 is provided on the inner wall of the housing 1, around the through holes 101. The chamfered structure 1011 guides the pin body 302 as it extends out of the through holes 101, preventing collisions between the pin body 302 and the inner wall of the housing 1, which could cause unnecessary damage to the pin body 302 and / or the housing 1.

[0054] During use, when the outer shell 1 and / or the plug bracket 2 are rotated by external force (such as manual rotation by the user), the plug assembly 3 slides along the guide groove 2021 on the guide post 201 to control the plug body 302 to extend outward from the outer shell 1. When the plug body 302 extends to its maximum length, the slider 3012 on the base 301 moves into the first positioning groove 202, and at the same time, the first conductive spring 6 connects with the first conductive block 3013 to achieve conductivity, and the plug body 302 smoothly connects to the AC terminal of the charger or adapter. When the outer shell 1 and / or the plug bracket 2 are rotated in the opposite direction by external force, the plug assembly 3 retracts along the guide post 201, and the plug body 302 retracts into the outer shell 1, thus protecting the plug body 302.

[0055] The features and advantages of the rotary telescopic pin assembly of this application are:

[0056] 1. This rotary telescopic plug assembly, through the telescopic control of the plug body 302, not only allows for smooth insertion into the socket when the plug body 302 is in the extended state, but also has the advantages of occupying less space and being easy to carry when the plug body 302 is retracted into the outer shell 1. In addition, when the plug body 302 is retracted into the outer shell 1, it can also prevent the plug body 302 from being exposed to the external environment and being damaged, thus helping to extend the service life of the power plug.

[0057] Second, in this rotary telescopic plug assembly, the guide post 201 that drives the vertical movement of the plug assembly 3 (i.e., the plug body 302 performs telescopic movements) is located in the middle of the outer shell 1, while the conductive spring structure for connecting with the plug body 302 is located on the surrounding plate 204 on the outer periphery of the guide post 201. This ensures that the driving of the plug assembly 3 will not interfere with the conductive structure inside the outer shell 1, guaranteeing smooth and stable docking between the plug body 302 and the conductive spring. In addition, this layout provides more assembly space for the conductive spring and other electrical connection structures, and the movement of the plug assembly 3 will not affect the stability of the connection of the conductive spring and other circuit structures, ensuring the stable working state of the plug assembly.

[0058] Third, the rotating telescopic plug assembly meets the safety regulations (GB1002-2024). When the plug assembly 3 is extended to the normal use position, it is locked to ensure normal use. In contrast, similar structures of existing plug assemblies will retract after being subjected to force. This application can ensure the stable use of the plug.

[0059] Implementation Method 2

[0060] This application provides a power plug, which includes a PCB board and a rotary telescopic plug assembly as described in any of the above embodiments. The PCB board is connected to the second conductive spring 7 in the rotary telescopic plug assembly. When the plug body 302 in the rotary telescopic plug assembly is in the extended state, the plug body 302 is electrically connected to the AC terminal of the PCB board through the first conductive spring 6 and the second conductive spring 7 in sequence.

[0061] The power plug of this application is suitable for electrical components such as chargers and adapters. It not only ensures a stable connection with the socket, but is also easy to carry, avoids damage caused by long-term exposure of the plug pins, and effectively extends the service life of the power plug.

[0062] The power plug of this application has the same features and advantages as the aforementioned rotary telescopic plug assembly, which will not be repeated here.

[0063] It should be noted that in the description of this application, the terms "first," "second," etc., are used only for descriptive purposes and to distinguish similar objects; there is no order between them, nor should they be construed as indicating or implying relative importance. Furthermore, in the description of this application, unless otherwise stated, "multiple" means two or more.

[0064] The various embodiments described in this specification are presented in a progressive manner. The same or similar parts between the embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0065] The above are merely a few embodiments of this application. Although the embodiments disclosed in this application are as described above, the content is only for the purpose of facilitating understanding of this application and is not intended to limit this application. Any person skilled in the art to which this application pertains may make any modifications and changes in the form and details of the embodiments without departing from the spirit and scope disclosed in this application, but the scope of patent protection of this application shall still be determined by the scope defined in the appended claims.

Claims

1. A rotary telescopic pin assembly, wherein, The rotary telescopic pin assembly includes: The outer shell includes a first shell wall, on which a through hole is provided; The pin bracket includes a guide post and a rotatably mounted support base. The support base is located at the bottom of the outer shell and is disposed opposite to the first shell wall. The support base and the outer shell enclose a receiving cavity. The guide post is located in the receiving cavity and one end of the guide post is connected to the support base. The other end of the guide post extends toward the first shell wall. The outer wall of the guide post has a circumferentially arranged spiral guide groove. A pin assembly includes a base and a pin body disposed on the base. The base is sleeved on the guide post, and the inner wall of the base has at least one slider, which is slidably embedded in the guide groove. A limiting post is provided in the accommodating cavity. One end of the limiting post is connected to the first shell wall, and the other end of the limiting post extends toward the support base. The base has a limiting groove, and the limiting post is slidably embedded in the limiting groove.

2. The rotary telescopic pin assembly as described in claim 1, wherein, A stop plate is provided at one end of the guide post, and the stop plate abuts against the slider that has slid to the end of the guide groove.

3. The rotary telescopic pin assembly as described in claim 2, wherein, The guide post has a first positioning groove on its outer wall near the first shell wall. The first positioning groove is connected to the guide slide groove, and the inner wall of the position where the first positioning groove is connected to the guide slide groove has a backstop protrusion. When the insert body extends out of the shell through the through hole, the slider enters the first positioning groove from the guide slide groove and abuts against the backstop protrusion.

4. The rotary telescopic pin assembly as described in claim 1, wherein, The support base is provided with multiple enclosures, one end of each enclosure is connected to the support base, and the multiple enclosures are distributed at intervals along the circumference of the guide post. The guide post and the pin assembly in the retracted state are both located inside the multiple enclosures. A first conductive spring is provided on the inner wall of the enclosure, and a second conductive spring is provided on the support base. The top end of the first conductive spring is located at the top of the enclosure, and the bottom end of the first conductive spring extends to the support base and is connected to the second conductive spring. The second conductive spring is used for electrical connection with the PCB board. When the insert body extends out of the outer shell through the through hole, the insert body comes into contact with the top of the first conductive spring.

5. The rotary telescopic pin assembly as described in claim 4, wherein, A first conductive block extends from the outer wall of the base and is connected to the insert body. The top of the first conductive spring has a second conductive block. When the insert body extends out of the outer shell through the through hole, the first conductive block and the second conductive block are in contact.

6. The rotary telescopic pin assembly as described in claim 4, wherein, Each of the multiple enclosure panels has a first positioning protrusion on its bottom outer wall; The rotary telescopic pin assembly also includes an annular pressure cap, which is sleeved on the outer periphery of the plurality of enclosure plates. The top and bottom of the pressure cap abut against the bottom of the first positioning protrusion and the top of the support base, respectively. The support base is rotatably connected to the opening of the outer shell through the pressure cap.

7. The rotary telescopic pin assembly as described in claim 4, wherein, The bottom of the enclosure or the bottom of the support base has a second positioning protrusion, and the outer wall of the base has a second positioning groove. When the insert body retracts into the outer shell through the through hole, the second positioning protrusion is embedded in the second positioning groove.

8. The rotary telescopic pin assembly as described in claim 1 or 7, wherein, The bottom of the guide post is provided with an annular boss along the circumference. When the insert body retracts into the housing through the through hole, the bottom of the base abuts against the top of the boss.

9. The rotary telescopic pin assembly as claimed in claim 1, wherein, The pin assembly is an AC pin assembly, and there are two pin bodies and two through holes, with each of the two through holes corresponding to one of the two pin bodies. The inner wall of the outer casing and the area surrounding the through hole have a chamfered structure.

10. A power plug, wherein, The power plug includes a PCB board and a rotary telescopic pin assembly as described in any one of claims 1 to 9, wherein the PCB board is connected to a second conductive spring in the rotary telescopic pin assembly; When the insert body in the rotary telescopic pin assembly is in the extended state, the insert body is electrically connected to the PCB board in sequence through the first conductive spring and the second conductive spring.

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