Charger

Abstract

The utility model provides a charger. The charger comprises a housing, a first pin, a second pin and a rack assembly. The first pin and the second pin are rotatably connected with the housing. The rack assembly is in sliding connection with the shell and engaged with the second pin, one of the rack assembly and the first pin is provided with a rotating column, the other one is provided with a rotating groove, the rotating column extends into the rotating groove, the first pin can rotate in the circumferential direction and drive the rack assembly to slide after obtaining the driving force, and the rack assembly drives the second pin to rotate reversely in the circumferential direction. According to the scheme, the rack assembly is used as a transmission structure, so that the transmission structure can be greatly simplified, the size is reduced, and meanwhile, the space utilization rate of the charger is further increased due to the fact that the first pin and the second pin rotate in opposite directions. Therefore, the charger provided by the utility model simplifies the transmission structure while meeting the folding requirement, and is higher in space utilization.

Description

Technical Field

[0001] This utility model relates to the field of charger technology, and in particular to a charger. Background Technology

[0002] A power charger is a device that connects electrical appliances and other devices to a power source. Power outlets and chargers vary in shape, grade, size, and type depending on the country and region. In particular, UK standard chargers are typically fixed in structure, taking up desk space and being easily damaged during transport. Among related technologies, chargers with multiple prongs that can be folded or unfolded simultaneously have a complex structure, are inconvenient to use, and have poor space utilization. Utility Model Content

[0003] The main purpose of this invention is to propose a charger that, while meeting the folding requirements, simplifies the transmission structure and makes better use of space.

[0004] To achieve the above objectives, the embodiments of this utility model adopt the following technical solutions:

[0005] Charger, including:

[0006] case;

[0007] The first pin rotates to connect to the housing.

[0008] The second pin rotates to connect to the housing.

[0009] The rack assembly slides through the housing and engages with the second pin.

[0010] The rack assembly and the first pin are provided with a rotating column and a rotating groove, respectively. The rotating column extends into the rotating groove. After the first pin obtains driving force, it can rotate in the circumferential direction and drive the rack assembly to slide. The rack assembly drives the second pin to rotate in the opposite direction in the circumferential direction.

[0011] In some embodiments, the first pin and the second pin are arranged at intervals along a first direction, the rack assembly extends along a second direction perpendicular to the first direction, the rack assembly is located between the first pin and the second pin along the first direction, and the second pin is provided with a mating gear on one side along the first direction, the mating gear meshing with the rack assembly.

[0012] In some embodiments, the rack assembly includes a first portion and a second portion connected to each other, the first portion engaging with a mating gear, a first pin including a shaft configured to rotate about the shaft, and a second portion defining a clearance groove into which the shaft extends.

[0013] In some embodiments, the rack assembly extends along a second direction perpendicular to the first direction, and along the direction perpendicular to both the first and second directions, a rotating groove is provided on one side of the second portion and a clearance groove is provided on the other side.

[0014] In some embodiments, the charger further includes a spring and a circuit board. The spring includes a first end and a second end. The first end is electrically connected to the second pin, and the second end is electrically connected to the circuit board. The first end is configured to deform and abut against the second pin during rotation.

[0015] In some embodiments, when the first pin is subjected to a circumferential driving force, the spring is configured to drive the second pin to rotate to the extreme position in the opposite direction of the circumferential direction, and the rack assembly can drive the first pin to rotate to the extreme position in the circumferential direction.

[0016] and / or;

[0017] After the first pin rotates to its circumferential limit position and the second pin rotates to its opposite circumferential limit position, when the first pin is subjected to a reverse circumferential driving force, the spring is configured to drive the second pin to rotate to its circumferential limit position, and the rack assembly can drive the first pin to rotate to its opposite circumferential limit position.

[0018] In some embodiments, the housing is a plug-in side along a third direction, which is perpendicular to the first direction. The plug-in side is used to mate with a socket. Both the first and second pins can rotate to protrude from the plug-in side. The first end has multiple grooves. The second pin includes a connecting end and a protrusion. The connecting end is used to electrically connect to the socket. Along the direction of the connecting end pointing to the rotation axis of the second pin, the first end gradually extends toward the side closer to the plug-in side, so that during the rotation of the second pin, the protrusion can extend into any of the grooves.

[0019] In some embodiments, the housing defines a receiving cavity, a first opening, a second opening, and a third opening. The first opening and the second opening are both connected to the receiving cavity. The first pin and the second pin are both located in the receiving cavity. After the first pin receives driving force, the first pin can rotate to extend out of the first opening, and the second pin can rotate to extend out of the second opening. The plane where the third opening is located is adjacent to the planes where the first opening and the second opening are located. The first pin extends out of the third opening so that the first pin is suitable to be turned and receive driving force.

[0020] In some embodiments, the charger further includes a third pin, which has the same structure as the second pin. The second and third pins are symmetrically distributed on both sides of the first pin. The third pin is rotatably connected to the housing. The rack assembly includes a first rack group and a second rack group. The first rack group is located between the first and second pins along a first direction and engages with the first and second pins respectively. The second rack group is located between the first and third pins along the first direction and engages with the first and third pins respectively.

[0021] In some embodiments, the side of the housing along a third direction is the plug-in side, which is perpendicular to the first direction. The plug-in side is used to mate with a socket. After the first pin, the second pin, and the third pin are all rotated to protrude from the plug-in side, the size of the first pin is smaller than the size of the second pin and the third pin along the first direction, and the size of the first pin is larger than the size of the second pin and the third pin along the second direction which is perpendicular to the first direction and the third direction.

[0022] Compared with the prior art, the beneficial effects of this utility model are:

[0023] The charger of this invention includes a housing, a first plug, a second plug, and a rack assembly. The first and second plugs serve as the two prongs of the charger. A rack assembly is incorporated to accommodate the charger's folding mechanism. The rack assembly is slidably connected to the housing. One of the rack assembly and the first plug has a rotating post, and the other has a rotating groove. The rotating post extends into the rotating groove. When the first plug receives driving force, it rotates circumferentially, causing the rack assembly to slide. The rack assembly, in turn, causes the second plug to rotate in the opposite circumferential direction. Through this arrangement, as the first plug rotates, the interaction between the rotating post and the rotating groove allows the first plug to slide relative to the housing, and the sliding of the rack further drives the second plug to rotate. Compared to designs where both plugs rotate in the same direction and the transmission components are arranged along a first direction, this invention utilizes a rack assembly as the transmission structure, significantly simplifying the transmission structure and reducing volume. Furthermore, the opposite rotation of the first and second plugs further increases the charger's space utilization. Therefore, this charger satisfies the folding requirement while simplifying the transmission structure and achieving higher space utilization. Attached Figure Description

[0024] 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 the structures shown in these drawings without creative effort.

[0025] Figure 1 This is a perspective view of a charger provided in one embodiment of the present invention;

[0026] Figure 2 This is a perspective view of a charger provided in one embodiment of the present invention; wherein the plug is in an extended state;

[0027] Figure 3 This is a three-dimensional perspective view of the first side of the assembly of the first pin, the second pin, the third pin, and the rack assembly provided in one embodiment of the present invention.

[0028] Figure 4 This is a two-dimensional perspective view of the second side of the assembly of the first pin, the second pin, the third pin, and the rack assembly provided in one embodiment of the present invention.

[0029] Figure 5 This is a top view of the first pin, second pin, third pin, and rack assembly provided in one embodiment of the present invention.

[0030] Figure 6 This is a perspective view of a charger provided in one embodiment of the present invention; wherein, part of the housing has been removed, and the circuit board is represented by a dashed frame.

[0031] Explanation of icon numbers:

[0032] Charger 100;

[0033] Housing 110; Insertion side 111; Receiving cavity 112; First opening 113; Second opening 114; Third opening 115;

[0034] First pin 120; Rotating column 121; Shaft 122;

[0035] Second pin 130; mating gear 131;

[0036] Rack assembly 140; first rack group 140A; second rack group 140B; rotary groove 141; first part 142; second part 143; clearance groove 1431;

[0037] Spring 150; First end 151; Groove 1511; Second end 152;

[0038] The third pin is 160;

[0039] Circuit board 170;

[0040] First direction X;

[0041] Second direction Y;

[0042] Third direction Z;

[0043] Zhou Xiang R.

[0044] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0045] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0046] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0047] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or," "and / or," or "and / or" throughout the text implies three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where A and B are simultaneously satisfied. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0048] In related technologies, chargers with multiple prongs that can be folded or unfolded simultaneously have a complex structure, are inconvenient to use, and have poor space utilization.

[0049] Specifically, the applicant initially considered that gears could be used to drive the pins to fold or unfold. In addition, corresponding to the distribution direction of each pin, multiple parallel and meshing gears could be set to connect each pin of the charger, so that each pin could move simultaneously. However, the above setup would easily occupy a large amount of internal space in the charger, which is not conducive to the compact design of the charger.

[0050] In view of this, see Figures 1-6This utility model provides a charger 100. In this application, the charger 100 has a plug structure with pins to enable electrical connection between the charger 100 and a socket, so that the charger 100 can supply power to electronic devices. The charger 100 includes a housing 110, a first pin 120, a second pin 130, and a rack and pinion assembly 140.

[0051] For details, see Figures 1-2 The housing 110 is the outer shell structure of the charger 100, and other components of the charger 100 can be connected to the housing 110. The housing 110 can have any suitable structural shape as needed.

[0052] See Figures 1-2 The first prong 120 is rotatably connected to the housing 110, and similarly, the second prong 130 is rotatably connected to the housing 110. Thus, both the first prong 120 and the second prong 130 can serve as prong structures for the charger 100. The structures of the first prong 120 and the second prong 130 can be the same or different, and the first prong 120 and / or the second prong 130 can be adapted for electrical connection with a socket, or can only serve as a safety door for positioning or unlocking the socket after the charger 100 is engaged with the socket. Depending on the requirements, the charger 100 can be any suitable structural shape and standard charger 100, such as a two-prong charger 100 or a three-prong charger 100 (in which case the charger 100 also has additional prongs).

[0053] See Figures 3-5 The rack assembly 140 is slidably connected to the housing 110 and engages with the second pin 130. To enable the rack assembly 140 to perform a transmission function, one of the rack assembly 140 and the first pin 120 is provided with a rotating post 121, and the other with a rotating groove 141. The rotating post 121 extends into the rotating groove 141. After receiving driving force, the first pin 120 can rotate in the circumferential direction R, causing the rack assembly 140 to slide. The rack assembly 140 also causes the second pin 130 to rotate in the opposite direction in the circumferential direction R. It can be understood that while the first pin 120 rotates, the engagement between the rotating post 121 and the rotating groove 141 allows the first pin 120 to drive the rack assembly 140 to slide relative to the housing 110. The sliding of the rack further drives the second pin 130 to rotate. In this invention, using the rack and pinion assembly 140 as the transmission structure can greatly simplify the transmission structure and reduce the volume. At the same time, the first pin 120 and the second pin 130 rotate in opposite directions, which further increases the space utilization of the charger 100.

[0054] It should be noted that the driving force obtained by the first pin 120 can be provided directly by the user (e.g., the user moves the first pin 120 by hand) or it can be provided by other driving devices, and the rack assembly 140 can slide in any suitable direction. The following description uses an embodiment in which the rack assembly 140 slides horizontally along the length direction of the first pin 120 as an example.

[0055] As can be seen, the charger 100 of this utility model includes a housing 110, a first plug 120, a second plug 130, and a rack assembly 140. The first plug 120 and the second plug 130 can each serve as two plugs of the charger 100. The rack assembly 140 is provided to accommodate the folding requirement of the charger 100. The rack assembly 140 is slidably connected to the housing 110. One of the rack assembly 140 and the first plug 120 has a rotating post 121, and the other has a rotating groove 141. The rotating post 121 extends into the rotating groove 141. After receiving driving force, the first plug 120 can rotate in the circumferential direction R, causing the rack assembly 140 to slide. The rack assembly 140 also causes the second plug 130 to rotate in the opposite direction in the circumferential direction R. With the above-described configuration, as the first pin 120 rotates, the engagement between the rotating column 121 and the rotating groove 141 allows the first pin 120 to drive the rack assembly 140 to slide relative to the housing 110. The sliding of the rack further drives the second pin 130 to rotate. Compared to a design where both pins rotate in the same direction and the transmission components are arranged along the first direction X, the present invention utilizes the rack assembly 140 as the transmission structure, which significantly simplifies the transmission structure and reduces the size. Furthermore, the fact that the first pin 120 and the second pin 130 rotate in opposite directions further increases the space utilization of the charger 100. Therefore, the charger 100 of this invention satisfies the folding requirement while simplifying the transmission structure and achieving higher space utilization.

[0056] For ease of description, the following description uses an embodiment where the first pin 120 has a rotating post 121 and the rack assembly 140 has a rotating groove 141. For the specific mating configuration of the rack assembly 140, please refer to... Figure 3In some embodiments, in the scheme of this application, the first direction X is the direction from the geometric center of the first pin 120 to the geometric center of the second pin 130. The first pin 120 and the second pin 130 are arranged at intervals along the first direction X. The rack assembly 140 extends along the second direction Y perpendicular to the first direction X. The rack assembly 140 is located between the first pin 120 and the second pin 130 along the first direction X (the rack assembly 140 may be entirely located between the first pin 120 and the second pin 130, or it may be partially located). The second pin 130 is provided with a mating gear 131 on one side along the first direction X. The mating gear 131 meshes with the rack assembly 140. The mating gear 131 is the part of the second pin 130 that meshes with the rack assembly 140. The mating gear 131 may include a gear body and a gear shaft. The gear shaft is connected to the second pin 130, and the connection can be an integral connection (glue injection connection, integral molding, etc.) or a detachable connection. With the above arrangement, the gap between the first pin 120 and the second pin 130 along the first direction X can be fully utilized. Since this gap needs to be designed according to the specifications of the charger 100, placing the rack assembly 140 in this gap does not occupy additional internal space of the charger 100, resulting in high space utilization. Furthermore, the arrangement of meshing the gear 131 with the rack assembly 140 does not significantly alter the structure of the second pin 130, thus reducing manufacturing costs.

[0057] For the specific structure of the rack assembly 140, see [link to relevant documentation]. Figures 3-5 In some embodiments, the rack assembly 140 includes a first portion 142 and a second portion 143 connected to each other. On the one hand, the first portion 142 meshes with a mating gear, so that only the first portion 142 may have a toothed structure. On the other hand, the first pin 120 includes a shaft 122, which is configured to rotate about the shaft 122. The second portion 143 defines a clearance groove 1431 into which the shaft 122 extends. Thus, while the shaft 122 is provided to facilitate the rotation of the first pin 120, the clearance groove 1431 can provide clearance for the shaft 122, preventing interference between the movements of the first pin 120, the second pin 130, and the rack assembly 140. More specifically, regarding the arrangement of the clearance groove 1431, in some embodiments, the rack assembly 140 extends along a second direction Y perpendicular to the first direction X. Along directions perpendicular to both the first direction X and the second direction Y, one side of the second portion 143 is provided with a rotating groove 141, and the other side with a clearance groove 1431. This arrangement allows for a more reasonable placement of the clearance groove 1431. Specifically, in... Figure 3In the embodiment shown, within the rotation angle range of the first pin 120, both the rotating groove 141 and the rotating column 121 can always be located on the side of the shaft 122 away from the clearance groove 1431. According to the above arrangement, the clearance groove 1431 can be more easily designed, and the driving effect of the first pin 120 rotating and driving the rack assembly 140 (or vice versa) is better.

[0058] To achieve the electrical connection between the first pin 120 and the second pin 130, see [link to documentation]. Figures 3-6 In some embodiments, the charger 100 further includes a spring contact 150 and a circuit board 170. The spring contact 150 includes a first end 151 and a second end 152. The first end 151 is electrically connected to the second pin 130, and the second end 152 is electrically connected to the circuit board 170. The first end 151 is configured to deform and abut against the second pin 130 during rotation. Thus, the spring contact 150 serves two purposes: firstly, it electrically connects the second pin 130 to the circuit board 170; secondly, by deforming and abutting against the second pin 130 during rotation, the spring contact 150 also serves to position the second pin 130. Specifically, the spring contact 150 ensures that the pin is securely fixed when inserted into the socket and smoothly disengages from the socket when retracted, preventing accidental electric shock. Additionally, the spring contact 150 provides assistance when the second pin 130 moves, reducing the user's effort and improving the user experience. Furthermore, in some embodiments, the first end 151 has a plurality of grooves 1511, and the second pin 130 includes a connecting end and a protrusion. The connecting end is used for electrical connection to the socket. Along the direction of the connecting end pointing towards the rotation axis of the second pin 130, the first end 151 gradually extends towards the side closer to the insertion side 111, so that during the rotation of the second pin 130, the protrusion can extend into any of the grooves 1511. The above arrangement can make the rotation position of the second pin 130 more stable and the rotation adjustment more convenient.

[0059] Based on the setting of spring 150, in order to make spring 150 provide better assist driving effect on the pin, see [link to relevant documentation]. Figures 3-6Regarding the process of rotating the first pin 120 and the second pin 130 to the unfolded state, in some embodiments, when the first pin 120 is subjected to a driving force along the circumferential direction R, the spring 150 is configured to drive the second pin 130 to rotate to the extreme position in the opposite direction along the circumferential direction R, and the rack assembly 140 can drive the first pin 120 to rotate to the extreme position along the circumferential direction R. It is understandable that, for the above-mentioned movement process, initially, the driving force can drive the first pin 120 to rotate, and drive the second pin 130 to rotate. When the first pin 120 (or the second pin 130) rotates to a certain angle (for example, after rotating 70°), through the eccentric structure of the spring 150 and the pin, the deformed spring 150 drives the second pin 130 to continue moving, and drives the first pin 120 to rotate. At this time, the second pin 130 and the first pin 120 can be driven by the spring 150 alone, or the driving force and the spring 150 can be used together to drive the second pin 130 and the first pin 120, that is, the spring 150 plays an assisting role. Similarly, regarding the process of rotating the first pin 120 and the second pin 130 to the folded state, in some embodiments, after the first pin 120 rotates to its extreme position along the circumferential direction R and the second pin 130 rotates to its extreme position in the opposite direction along the circumferential direction R, based on the aforementioned unfolded state, when it is necessary to cover the first pin 120 and the second pin 130, that is, when the first pin 120 is subjected to a driving force in the opposite direction along the circumferential direction R, the spring 150 is configured to drive the second pin 130 to rotate to its extreme position along the circumferential direction R, and the rack assembly 140 can drive the first pin 120 to rotate to its extreme position in the opposite direction along the circumferential direction R. The process of rotating to the folded state is the opposite of the process of rotating to the use state, therefore, please refer to the relevant description in the foregoing embodiments. Based on the driving action of the spring 150 during the above two movements, the switching between the unfolded and folded states of the charger 100 can be made more convenient and effortless. In addition, since the initial driving force is provided to the first pin 120, the spring 150 can further drive the second pin 130 through the transmission action. That is, the object of the driving force (all or part) is transferred to the second pin 130, so that the force on the first pin 120 and the second pin 130 is more uniform, the driving load is lower, and the driving effect is better.

[0060] For the specific configuration of housing 110, see [link to relevant documentation]. Figures 1-2 as well as Figure 6In some embodiments, the housing 110 defines a receiving cavity 112, a first opening 113, and a second opening 114, both of which communicate with the receiving cavity 112. A first pin 120 and a second pin 130 are both located within the receiving cavity 112. After receiving a driving force, the first pin 120 can rotate to extend beyond the first opening 113, and the second pin 130 can rotate to extend beyond the second opening 114. It is understood that the receiving cavity 112 is an internal cavity structure of the housing 110 itself. The first opening 113 and the second opening 114 allow the first pin 120 and the second pin 130 to extend out of the receiving cavity 112, respectively, so that the first pin 120 and the second pin 130 protrude from the insertion side 111. It should be noted that the extension of the first opening 113 and the second opening 114 described above can be fully extended or partially extended.

[0061] For the method of obtaining driving force from the first pin 120, see [link / reference]. Figures 1-2 In some embodiments, the housing 110 further defines a third opening 115, the plane of which is adjacent to the planes of the first opening 113 and the second opening 114. The first pin 120 extends out of the third opening 115 to be adapted to be turned and to obtain driving force. It is understood that since the third opening 115 is located beside the first opening 113 and the second opening 114, and the first pin 120 extends out of the third opening 115, a user can use their finger to press the protruding part of the first pin 120, causing the first pin 120 to rotate and extend out of the first opening 113. Simultaneously, through the transmission action of the gear assembly, the second pin 130 rotates to extend out of the second opening 114, thus completing the unfolding operation of the charger 100. The folding operation of the charger 100 is the reverse. In other embodiments, the first pin 120 can also be driven by a driving device, for example, by the user pressing a button and indirectly driving the first pin 120 through other transmission structures, or by a control system.

[0062] See Figures 1-5In some embodiments, the charger 100 further includes a third pin 160, which has the same structure as the second pin 130. The second pin 130 and the third pin 160 are symmetrically distributed on both sides of the first pin 120. The third pin 160 is rotatably connected to the housing 110. The rack assembly 140 includes a first rack group 140A and a second rack group 140B. The first rack group 140A is located between the first pin 120 and the second pin 130 along the first direction X and engages with the first pin 120 and the second pin 130 respectively. The second rack group 140B is located between the first pin 120 and the third pin 160 along the first direction X and engages with the first pin 120 and the third pin 160 respectively. It is understood that the third pin 160, together with the first pin 120 and the second pin 130, can form a three-pin charger 100. The structures of the first rack group 140A and the second rack group 140B can be the same, the only difference being the driving pin. The other structures and settings of the third pin 160 can be referred to the relevant descriptions of the first pin 120 and the second pin 130 in the above embodiments, and will not be repeated here.

[0063] For the specific structure of the first pin 120, the second pin 130, and the third pin 160, please refer to [link / reference]. Figures 1-5 In some embodiments, after the first pin 120, the second pin 130, and the third pin 160 are all rotated to protrude beyond the insertion side 111, along the first direction X, the size of the first pin 120 is smaller than the sizes of the second pin 130 and the third pin 160, and along the second direction Y, which is perpendicular to the first direction X and the third direction Z, the size of the first pin 120 is larger than the sizes of the second pin 130 and the third pin 160. Furthermore, the cross-sectional shape of the first pin 120, the second pin 130, and the third pin 160 along the first direction X can all be rectangular. Based on the above configuration, the charger 100 can be a British standard three-prong charger 100. The first prong 120 corresponds to the grounding electrode, which is thicker and longer than the other two prongs 130 and 160. Its main function is to conduct any leakage current that may occur in the electrical equipment to the ground, ensuring electrical safety. The second prong 130 and the third prong 160 correspond to the live wire and the neutral wire, respectively. These two prongs are relatively similar in thickness and length and are square in shape. They are responsible for transmitting electrical energy so that the electrical appliance can work normally.

[0064] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the contents of this utility model specification and drawings under the application concept of this utility model, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A charger, characterized in that, include: case; The first pin is rotatably connected to the housing; The second pin is rotatably connected to the housing. The rack and pinion assembly is slidably connected to the housing and engages with the second pin; The rack assembly and the first pin are provided with a rotating post and a rotating groove, respectively. The rotating post extends into the rotating groove. After the first pin receives driving force, it can rotate circumferentially and drive the rack assembly to slide. The rack assembly drives the second pin to rotate in the opposite direction of the circumferential direction.

2. The charger according to claim 1, characterized in that, The first pin and the second pin are arranged at intervals along a first direction. The rack assembly extends along a second direction perpendicular to the first direction. The rack assembly is located between the first pin and the second pin along the first direction. The second pin is provided with a mating gear on one side along the first direction. The mating gear meshes with the rack assembly.

3. The charger according to claim 2, characterized in that, The rack assembly includes a first portion and a second portion connected to each other, the first portion engaging with the mating gear, the first pin including a shaft configured to rotate about the shaft, and the second portion defining a clearance groove into which the shaft extends.

4. The charger according to claim 3, characterized in that, The rack assembly extends along a second direction perpendicular to the first direction. Along the direction perpendicular to both the first and second directions, the second part has the rotating groove on one side and the clearance groove on the other side.

5. The charger according to claim 2, characterized in that, The charger also includes a spring contact and a circuit board. The spring contact includes a first end and a second end. The first end is electrically connected to the second pin, and the second end is electrically connected to the circuit board. The first end is configured to deform and abut against the second pin during rotation of the second pin.

6. The charger according to claim 5, characterized in that, When the first pin is subjected to a driving force along the circumferential direction, the spring is configured to drive the second pin to rotate to an extreme position in the opposite direction along the circumferential direction, and the rack assembly can drive the first pin to rotate to an extreme position along the circumferential direction. and / or; After the first pin rotates to its limit position along the circumference and the second pin rotates to its limit position in the opposite direction along the circumference, when the first pin is subjected to a driving force in the opposite direction along the circumference, the spring is configured to drive the second pin to rotate to its limit position along the circumference, and the rack assembly is configured to drive the first pin to rotate to its limit position in the opposite direction along the circumference.

7. The charger according to claim 5, characterized in that, The housing has a plug-in side along a third direction, which is perpendicular to the first direction. The plug-in side is used to mate with a socket. Both the first and second pins can rotate to protrude from the plug-in side. The first end has multiple grooves. The second pin includes a connecting end and a protrusion. The connecting end is used to electrically connect to the socket. Along the rotation axis of the connecting end pointing to the second pin, the first end gradually extends towards the plug-in side so that during the rotation of the second pin, the protrusion can extend into any of the grooves.

8. The charger according to claim 1, characterized in that, The housing defines a receiving cavity, a first opening, a second opening, and a third opening. The first opening and the second opening are both connected to the receiving cavity. The first pin and the second pin are both located in the receiving cavity. After the first pin receives driving force, the first pin can rotate to extend out of the first opening, and the second pin can rotate to extend out of the second opening. The plane where the third opening is located is adjacent to the planes where the first opening and the second opening are located. The first pin extends out of the third opening so that the first pin is suitable for being turned and receiving driving force.

9. The charger according to claim 2, characterized in that, The charger also includes a third pin, which has the same structure as the second pin. The second pin and the third pin are symmetrically distributed on both sides of the first pin. The third pin is rotatably connected to the housing. The rack assembly includes a first rack group and a second rack group. The first rack group is located between the first pin and the second pin along the first direction and engages with the first pin and the second pin respectively. The second rack group is located between the first pin and the third pin along the first direction and engages with the first pin and the third pin respectively.

10. The charger according to claim 9, characterized in that, The housing has a plug-in side along a third direction, which is perpendicular to the first direction. The plug-in side is used to mate with a socket. After the first pin, the second pin, and the third pin are all rotated to protrude from the plug-in side, the size of the first pin is smaller than the size of the second pin and the third pin along the first direction, and the size of the first pin is larger than the size of the second pin and the third pin along the second direction, which is perpendicular to the first direction and the third direction.

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