Anti-falling charger

Abstract

The invention relates to the technical field of charging equipment, and discloses an anti-falling charger, which comprises a shell, a cover body, an insertion piece assembly and a locking device, and is characterized in that the cover body is connected with the shell, and an insertion piece hole is formed in the cover body; the insertion piece assembly is arranged in the shell in a sliding mode, the insertion piece assembly comprises a base, a conductive insertion piece fixed to the base and an anti-falling structure arranged at the rear end of the conductive insertion piece, the anti-falling structure wraps the periphery of part of the conductive insertion piece, and the cross section size of the anti-falling structure is larger than that of the conductive insertion piece; the locking device comprises a fixing piece, first fixing teeth arranged at the bottom of the fixing piece and second fixing teeth arranged at the top of the base, the fixing piece has a locking state and an unlocking state, and in the locking state, the first fixing teeth are meshed with the second fixing teeth; in the unlocking state, the first fixing teeth and the second fixing teeth are disengaged. According to the invention, the connection stability of the charger and the socket is improved, the charger is effectively prevented from loosening and falling off, and reliable fixation of the position of the insertion piece assembly is realized.

Description

Technical Field

[0001] This invention relates to the field of charging equipment technology, and more particularly to a charger that prevents it from falling off. Background Technology

[0002] Mobile phones and other electronic devices require chargers to ensure normal operation. However, in some scenarios, such as long-distance travel, although there are charging sockets on high-speed trains or sleeper trains, these sockets are often worn out due to frequent use. The internal springs may loosen, and with the development of super-fast charging technology, chargers are becoming increasingly heavier. This makes it difficult for ordinary fast-charging USB chargers to be inserted into these sockets. They may easily loosen after insertion, fall out with a slight touch, or simply not be inserted at all, preventing charging.

[0003] Therefore, there is an urgent need for a charger that prevents it from falling off, in order to solve the above-mentioned technical problems. Summary of the Invention

[0004] Based on the above, the purpose of this invention is to provide a charger that prevents detachment, which can be compatible with both normal and aging sockets, effectively improving the connection reliability between the charger and the socket and preventing the charger from loosening and falling off after being inserted into the socket; at the same time, it can reliably fix the position of the plug assembly.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A charger designed to prevent detachment, comprising:

[0007] case;

[0008] A cover body, connected to the housing, is provided with insert holes;

[0009] An insert assembly is slidably disposed within the housing along a first direction. The insert assembly includes a base, a conductive insert fixed on the base, and an anti-detachment structure disposed at the rear end of the conductive insert. The anti-detachment structure covers a portion of the outer periphery of the conductive insert. The insert assembly has a first position and a second position. When the insert assembly is in the first position, the conductive insert extends out of the insert hole. When the insert assembly is in the second position, both the conductive insert and the anti-detachment structure extend out of the insert hole. The cross-sectional dimension of the anti-detachment structure is larger than the cross-sectional dimension of the conductive insert.

[0010] The locking device includes a fixing member disposed within the housing, a first fixing tooth disposed at the bottom of the fixing member, and a second fixing tooth disposed at the top of the base. One end of the fixing member is fixed to the housing, and the other end is suspended. The fixing member has a locked state and an unlocked state. When the fixing member is in the locked state, the first fixing tooth and the second fixing tooth are engaged. When the fixing member is in the unlocked state, the first fixing tooth and the second fixing tooth are disengaged.

[0011] In some possible implementations, the anti-detachment structure and the base are integrally formed, and the conductive insert extends from the anti-detachment structure toward the side away from the base along a first direction.

[0012] In some possible implementations, both the first fixing tooth and the second fixing tooth are unidirectional ratchet teeth, and the tooth surfaces of the first fixing tooth and the second fixing tooth have the same inclination angle; the inclination tooth surface of the second fixing tooth is located on the side closer to the conductive insert, and the inclination tooth surface of the first fixing tooth is located on the side closer to the fixing end of the fixing member.

[0013] In some possible implementations, the fastener is provided with a lever, the cover is provided with a lever hole, and the lever extends out of the lever hole.

[0014] In some possible implementations, the fastener is L-shaped and includes a first connecting arm extending along a first direction and a second connecting arm extending upward from the first connecting arm. The first connecting arm is fixedly connected to the housing, and the paddle is fixed to the front side of the second connecting arm.

[0015] In some possible implementations, one of the cover and the housing is provided with a slot and the other with a buckle, and the cover and the housing are connected by the engagement of the slot and the buckle.

[0016] In some possible implementations, slide rails extending along a first direction are provided on both sides of the cover, and sliders are provided on both sides of the base, with the sliders slidably connected to the slide rails.

[0017] In some possible implementations, the housing is provided with a receiving cavity, the insert assembly is located within the receiving cavity, and the cover is provided with a connecting plate extending into the receiving cavity along a first direction, the connecting plate abutting against the inner wall of the receiving cavity.

[0018] In some possible implementations, the base is provided with conductive terminals, the receiving cavity is provided with conductive springs extending in a first direction, the connecting plate is provided with clearance openings, and the conductive terminals pass through the clearance openings to be electrically connected to the conductive springs.

[0019] In some possible implementations, an expansion joint is provided between adjacent connecting plates.

[0020] The beneficial effects of this invention are:

[0021] The anti-detachment charger provided by this invention, when used with a normal socket, keeps the plug assembly in the first position, and the charger can be charged by inserting the conductive plug into the socket socket. When used with an aging socket, by pulling the conductive plug outward, the plug assembly moves to the second position. At this point, not only can the conductive plug be inserted into the socket socket, but the anti-detachment structure can also be inserted into the socket socket. Because the cross-sectional dimension of the anti-detachment structure is larger than that of the conductive plug, the anti-detachment structure can be completely locked into the socket socket with almost no gaps in the top, bottom, left, and right directions. At this time, the charger is no longer fixed by relying on the loose spring clips inside the socket to clamp the conductive plug, but by relying on the tight connection between the socket and the anti-detachment structure. Thus, the charger can be adapted to aging sockets and will not fall off due to its own weight or lateral external forces. Only a horizontal pulling force can pull it out. This invention effectively improves the connection reliability between the charger and the socket, preventing the charger from loosening and falling off after being inserted into the socket. In addition, the present invention also includes a locking device. When the fixing member is in the locked state, the engagement of the first fixing tooth and the second fixing tooth enables reliable fixing of the insert assembly in the first and second positions, preventing the insert assembly from retracting under external force and ensuring the reliability of the charger charging process. Since one end of the fixing member is fixed to the housing and the other end is suspended, the fixing member can be switched to the unlocked state by bending it upward. At this time, the first fixing tooth and the second fixing tooth separate, thereby unlocking the insert assembly and facilitating the adjustment of the position of the insert assembly. The locking device has a simple structure and is easy to operate. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the anti-detachment charger (when the anti-detachment structure does not extend out of the plug hole and the support plate does not extend out of the slide groove) provided in an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the anti-detachment charger (when the anti-detachment structure extends out of the insert hole and the support plate extends out of the slide groove) provided in an embodiment of the present invention;

[0024] Figure 3 This is an exploded view of the anti-detachment charger provided in an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the first angle structure of the housing provided in an embodiment of the present invention;

[0026] Figure 5This is a schematic diagram of the second angle structure of the housing provided in an embodiment of the present invention;

[0027] Figure 6 This is a structural schematic diagram of the fastener provided in an embodiment of the present invention;

[0028] Figure 7 This is a schematic diagram of the first angle structure of the cover provided in an embodiment of the present invention;

[0029] Figure 8 This is a schematic diagram of the second angle structure of the cover provided in an embodiment of the present invention;

[0030] Figure 9 This is a schematic diagram of the insert assembly provided in an embodiment of the present invention;

[0031] Figure 10 This is an assembly diagram of the insert assembly and the cover provided in an embodiment of the present invention;

[0032] Figure 11 This is a schematic diagram of the first angle structure of the support plate provided in an embodiment of the present invention;

[0033] Figure 12 This is a schematic diagram of the second angle structure of the support plate provided in an embodiment of the present invention;

[0034] Figure 13 This is a schematic diagram of a charger plugged into a socket using existing technology.

[0035] Figure 14 This is a schematic diagram illustrating the process of a charger detaching from its socket using existing technology.

[0036] Figure 15 This is a schematic diagram of a charger in the prior art rotating around a pivot point to a stop tilting position;

[0037] Figure 16 This is a schematic diagram of the connection between the charger and the socket with the anti-disconnection structure provided in an embodiment of the present invention;

[0038] Figure 17 This is a schematic diagram of the connection between a charger and a socket with a support plate provided in an embodiment of the present invention;

[0039] Figure 18 This is a schematic diagram of a charger with a support plate rotating around a fulcrum to a stop tilting position, as provided in an embodiment of the present invention.

[0040] In the picture:

[0041] 1. Housing; 11. Receiving cavity; 12. Fixing component; 121. First connecting arm; 122. Second connecting arm; 123. First fixing tooth; 124. Paddle; 14. Slide groove; 141. Stop block; 15. Slot; 16. Conductive spring; 17. USB interface;

[0042] 2. Cover; 21. Insertion hole; 22. Paddle hole; 23. Connecting plate; 231. Clearance opening; 24. Buckle; 25. Slide rail; 26. Expansion joint;

[0043] 3. Insert assembly; 31. Base; 311. Slider; 312. Second fixing tooth; 313. Conductive terminal; 32. Conductive insert; 33. Anti-detachment structure;

[0044] 4. Support plate; 41. Sliding part; 42. Blocking part; 43. Anti-slip texture; 44. Limiting protrusion;

[0045] 100′, charger; 200′, socket; 300′, fulcrum; 3′, insert assembly;

[0046] 100, charger; 200, socket; 300, fulcrum. Detailed Implementation

[0047] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0048] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0049] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0050] In the description of this invention, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used merely for distinction in description and have no special meaning.

[0051] This invention provides an anti-detachment charger for charging electronic products such as mobile phones, tablets, Bluetooth headsets, and handheld fans, to solve the problem of chargers easily becoming loose or detaching when plugged into a socket in the prior art.

[0052] like Figures 1 to 12 As shown, the anti-detachment charger provided in this embodiment of the invention includes a housing 1, a cover 2, and a plug assembly 3. A receiving cavity 11 is provided inside the housing 1 near the front side. The cover 2 is disposed at the opening of the receiving cavity 11 and is detachably connected to the housing 1. Two plug holes 21 are provided on the cover 2. The plug assembly 3 is located inside the receiving cavity 11. The plug assembly 3 includes a base 31 and two conductive plugs 32 fixed to the base 31. The two conductive plugs 32 extend from the two plug holes 21 of the cover 2 and are used to connect to the socket on the receptacle to conduct current. The plug assembly 3 can slide within the housing 1 along a first direction to drive the conductive plugs 32 forward or backward along the first direction. The first direction in this invention refers to the front-rear direction of the housing 1, that is, the extension direction of the conductive plugs 32.

[0053] Optionally, in some embodiments, the cover 2 has a square structure, with connecting plates 23 extending into the receiving cavity 11 along the first direction on its four sides. The connecting plates 23 are tightly connected to the inner wall of the receiving cavity 11 to improve the tightness of the connection between the cover 2 and the shell 1. To facilitate the installation of the cover 2, an expansion joint 26 is provided between each adjacent connecting plate 23, thus providing a certain deformation space for the connecting plates 23, allowing the cover 2 to be smoothly installed in the shell 1. Further, in some embodiments, the inner wall of the shell 1 is provided with a slot 15, and the outer wall of the connecting plate 23 is provided with a buckle 24. The cover 2 and the shell 1 are detachably connected by the snap-fit ​​of the buckle 24 and the slot 15, which is convenient to assemble and reliable in connection. Of course, in other embodiments, a buckle can also be provided on the shell 1 and a slot can be provided on the connecting plate 23, which can also achieve the snap-fit ​​fixation of the shell 1 and the cover 2. Furthermore, in some embodiments, slide rails 25 extending along a first direction are provided on both sides of the cover 2, and sliders 311 are provided on both sides of the base 31, with the sliders 311 slidably connected to the slide rails 25. Through the above structure, smooth sliding of the insert assembly 3 within the housing 1 is achieved, improving its motion accuracy. Specifically, the slide rails 25 on both sides are respectively disposed on the inner walls of the connecting plates 23 on both sides.

[0054] In some embodiments, the insert assembly 3 further includes an anti-disengagement structure 33, which is disposed at the rear end of the conductive insert 32 (i.e., the end where the conductive insert 32 is connected to the base 31) and covers a portion of the outer periphery of the conductive insert 32. Optionally, the anti-disengagement structure 33 is cuboid in shape, and its cross-sectional dimension is larger than that of the conductive insert 32 and slightly smaller than that of the socket's opening. During the stroke of the insert assembly 3 moving in the first direction, it has a first position and a second position. When the insert assembly 3 is in the first position, the conductive insert 32 extends out of the insert hole 21; when the insert assembly 3 is in the second position, both the conductive insert 32 and the anti-disengagement structure 33 extend out of the insert hole 21.

[0055] The charger of this invention can be used with both normal and aging sockets. When the charger is used with a normal socket, the plug assembly 3 is held in the first position, and the charger is charged by inserting the conductive plug 32 into the socket. When the charger is used with an aging socket, the plug assembly 3 is moved to the second position by pulling the conductive plug 32 outward. At this position, not only can the conductive plug 32 be inserted into the socket, but the anti-detachment structure 33 can also be inserted into the socket. Since the cross-sectional dimension of the anti-detachment structure 33 is larger than that of the conductive plug 32, the anti-detachment structure 33 can be completely inserted into the socket with almost no gaps in the top, bottom, left, and right. At this time, the charger is no longer fixed by the loose spring inside the socket clamping the conductive plug 32, but by the tight combination of the socket and the anti-detachment structure 33. This allows the charger to be used with aging sockets and will not fall off due to its own weight or external forces. Only a horizontal pulling force can pull it out. This invention effectively improves the connection reliability between the charger and the socket, preventing the charger from becoming loose or falling off after being inserted into the socket.

[0056] Optionally, the anti-detachment structure 33 and the base 31 are integrally molded, and the conductive insert 32 extends from the anti-detachment structure 33 away from the base 31 along the first direction. This arrangement results in a simple structure and convenient manufacturing. Furthermore, the anti-detachment structure 33, the conductive insert 32, and the base 31 can also be integrally molded using insert injection molding, thereby further simplifying the manufacturing process and improving the stability of the structure.

[0057] Furthermore, a conductive terminal 313 is also provided on the base 31, and a conductive spring piece 16 extending along the first direction is provided in the receiving cavity 11 of the housing 1. A clearance opening 231 is provided on the connecting plate 23, and the conductive terminal 313 passes through the clearance opening 231 and is electrically connected to the conductive spring piece 16. Since the conductive spring piece 16 extends a certain length along the first direction, it ensures that the conductive terminal 313 always maintains good contact with the conductive spring piece 16 during the movement of the plug assembly 3, so that the plug assembly 3 can guide current in both the first and second positions. A USB interface 17 is also provided on the housing 1, and the conductive spring piece 16 is electrically connected to the USB interface 17, so that current can flow from the plug assembly 3 to the USB interface 17; the USB interface 17 is connected to electronic products through a data cable to charge the electronic products. Of course, a circuit board electrically connected to the conductive spring piece 16 is also provided inside the housing 1, which is a mature technology in the field and will not be described in detail here.

[0058] In some embodiments, the anti-detachment charger further includes a locking device for locking the position of the plug assembly 3. Specifically, the locking device includes a fixing member 12 disposed within the housing 1, a first fixing tooth 123 disposed at the bottom of the fixing member 12, and a second fixing tooth 312 disposed at the top of the base 31. One end of the fixing member 12 is fixedly connected to the housing 1, and the other end is suspended. The fixing member 12 has a locked state and an unlocked state. When the fixing member 12 is in the locked state, the first fixing tooth 123 and the second fixing tooth 312 engage, thereby locking the position of the plug assembly 3 and keeping it in a first position or a second position, preventing the plug assembly 3 from retracting under external force, and ensuring the reliability of the charger charging process. The fixing member 12 is elastic. By bending the fixing member 12 upward, the fixing member 12 can be switched to the unlocked state. At this time, the first fixing tooth 123 and the second fixing tooth 312 disengage, thereby unlocking the plug assembly 3 and facilitating the adjustment of the position of the plug assembly 3. The locking device has a simple structure and is easy to operate. It reliably fixes the insert assembly 3 and prevents the insert assembly 3 from shifting during use.

[0059] Optionally, both the first fixing tooth 123 and the second fixing tooth 312 are unidirectional ratchet teeth, and the tooth surface inclination angles of the first fixing tooth 123 and the second fixing tooth 312 are the same; the inclined tooth surface of the second fixing tooth 312 is located on the side close to the conductive insert 32, and the inclined tooth surface of the first fixing tooth 123 is located on the side close to the fixing end of the fixing member 12 (i.e. the end fixed to the housing 1). Through the mutual cooperation of the first fixing tooth 123 and the second fixing tooth 312, the insert assembly 3 can only extend outward in the first direction and cannot retract backward in the unlocked state. This setting makes it easier for the user to pull the conductive insert 32 outward, saving the unlocking steps. The above configuration allows the insert assembly 3 to move entirely from the first position to the second position along the first direction when subjected to an outward pulling force, fully exposing the anti-disengagement structure 33 to the housing 1 for easy connection with an aging socket. When the insert assembly 3 is subjected to an inward pushing force, it cannot retract due to the restraint of the first fixing tooth 123 and the second fixing tooth 312, ensuring the reliability of the charging process and preventing the insert assembly 3 from retracting under force. Furthermore, both the first fixing tooth 123 and the second fixing tooth 312 are wedge-shaped teeth. For example, the first fixing tooth 123 can be shaped like a ◢, and the second fixing tooth 312 can be shaped like a ◤. The first fixing tooth 123 and the second fixing tooth 312 form a ◢◤ fit to achieve unidirectional movement of the insert assembly 3. In practical applications, when the charger needs to be plugged into an aging socket, simply pull the conductive plug 32 forward with a little force to slide the plug assembly 3 outward, so that the anti-disconnection structure 33 is fully exposed in the housing 1. The anti-disconnection structure 33 is tightly inserted into the socket, thereby achieving a reliable connection between the charger and the socket and preventing loosening or detachment.

[0060] Optionally, the fixing member 12 is further provided with a lever 124, and the cover 2 is provided with a lever hole 22, through which the lever 124 extends. With this configuration, when it is necessary to unlock the insert assembly 3, simply manually push the lever 124 upwards, causing the fixing member 12 to bend upwards, thus separating the first fixing tooth 123 and the second fixing tooth 312. Then, by pushing the insert assembly 3 inwards, the insert assembly 3 can be restored from the second position to the first position. In an optional embodiment, the fixing member 12 is L-shaped, including a first connecting arm 121 extending along a first direction and a second connecting arm 122 extending upwards from the first connecting arm 121. The first connecting arm 121 is fixedly connected to the housing 1, and the first fixing tooth 123 is located at the bottom of the first connecting arm 121; the lever 124 is fixed to the front side of the second connecting arm 122. Through the above configuration, a certain torque is formed between the lever 124 and the first connecting arm 121, allowing the fixing member 12 to be moved more easily via the lever 124.

[0061] In some embodiments, the charger further includes a support plate 4. The support plate 4 is slidably disposed on the housing 1 along a second direction, and has an extended position extending below the housing 1 along the second direction and a retracted position retracted into the housing 1 along the second direction. When the charger is plugged into the socket, by sliding the support plate 4 along the second direction, the support plate 4 can extend downward to below the housing 1. The extended support plate 4 can lower the center of gravity of the charger, reduce the fulcrum position where the charger abuts against the socket when it becomes loose, thereby reducing the degree of looseness of the charger and effectively preventing the charger from falling off. Specifically, the second direction of the present invention is a vertical direction. Further, the support plate 4 is located below the cover 2, and the outer surface of the support plate 4 is flush with the outer surface of the cover 2. This ensures that during the plugging and unplugging process of the charger, both the cover 2 and the support plate 4 can be tightly connected to the surface of the socket, further improving the stability of the connection and helping to reduce the fulcrum position where the charger abuts against the socket when it becomes loose.

[0062] Optionally, the housing 1 is provided with a sliding groove 14, which extends through the bottom end of the housing 1. Sliding portions 41 are provided on both sides of the support plate 4. The support plate 4 is slidably connected to the sliding groove 14 via the sliding portions 41 to achieve smooth sliding of the support plate 4. In some embodiments, the sliding groove 14 can be a dovetail groove. Optionally, the support plate 4 has an internal gap, and its upper end is closed to form a blocking portion 42. A stop block 141 is provided at the bottom of the sliding groove 14. When the support plate 4 slides downwards along the second direction to the bottom of the sliding groove 14, the blocking portion 42 engages with the stop block 141 to prevent the support plate 4 from moving further downwards and to prevent the support plate 4 from detaching from the housing 1. Further, the sliding groove 14 is located below and communicates with the receiving cavity 11. The bottom of the cover 2 is sealed at the top of the sliding groove 14. When the support plate 4 moves upwards to its limit position, the blocking portion 42 of the support plate 4 abuts against the bottom of the cover 2 to limit the support plate 4 from above.

[0063] Optionally, the outer surface of the support plate 4 is provided with anti-slip texture 43 to increase the friction between the hand and the support plate 4, facilitating the sliding of the support plate 4. Further, the sliding portion 41 of the support plate 4 is also provided with a limiting protrusion 44, which is interference-fitted with the inner wall of the groove 14 to restrict the position of the support plate 4 when it does not need to extend, preventing the support plate 4 from sliding out automatically. For example, the limiting protrusion 44 can be a spherical protrusion with a certain degree of elasticity.

[0064] like Figures 13-18 As shown, the following content of this invention explains the principle of the anti-detachment charger of this invention by comparing it with the chargers in the prior art.

[0065] refer to Figure 13 and Figure 14 In the existing technology, the plug assembly 3' and the socket 200' have a clearance fit. The charger 100' does not fall smoothly in a vertical plane when it loosens and slips off. Instead, it rotates around the lowest point of contact between the bottom of the charger 100' and the panel of the socket 200' as a fulcrum 300', and only slips off after reaching a certain angle under the influence of gravity. (Reference) Figure 15 If the front end of the plug assembly 3' abuts against the top of the plug after the charger 100' rotates outward by a first angle α around the fulcrum 300', causing the charger 100' to stop tilting, then the charger 100' will not slide down because the rotation angle of the charger 100' has not reached the sliding angle.

[0066] refer to Figure 16The charger 100 provided in one embodiment of the present invention has an anti-disengagement structure 33 in the plug assembly 3. When the plug assembly 3 is inserted into the socket 200, the anti-disengagement structure 33 can also enter the socket 200 and fit tightly with the socket, with almost no gap between them. This prevents the charger 100 from being easily shaken by external forces in the up, down, left, or right directions. Only horizontal forces can make the charger 100 insert and pull out. This achieves effective fixation of the charger 100, allowing the charger 100 to be used in aging sockets 200 and preventing the charger 100 from becoming loose.

[0067] refer to Figure 17 In another embodiment of the present invention, a charger 100 is provided. By providing a support plate 4, when the charger 100 is plugged into the socket 200, the support plate 4 is pushed downwards, causing it to extend a certain length downwards relative to the housing 1. At this time, the point where the lower end of the support plate 4 contacts the panel of the socket 200 is the fulcrum 300. Clearly, the present invention lowers the center of gravity of the charger 100 by extending the support plate 4, thus lowering the position of the fulcrum 300 where the charger 100 contacts the socket 200 when it becomes loose, thereby effectively preventing the charger 100 from falling off.

[0068] refer to Figure 18 In this embodiment of the invention, after the charger 100 rotates around the fulcrum 300 by a second angle β, the front end of the insert assembly 3 touches the top, causing the charger 100 to stop tilting. This second angle β is less than... Figure 15 The first angle α in the equation. (By referring to...) Figure 15 As can be seen from the comparison of the charger 100' shown, although both rotate around the fulcrum, the present invention, due to the function of the support plate 4, has a longer rotation radius of the front end of the plug assembly 3 relative to the fulcrum 300. Therefore, a smaller tilt angle will raise the same height so that the front end of the plug assembly 3 touches the top and stops tilting. Since the charger 100 will not loosen or fall off if a sufficient tilt angle is not reached, the present invention effectively reduces the degree of loosening of the plug assembly 3 by setting the support plate 4, and improves the connection stability between the charger 100 and the socket 200.

[0069] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A charger designed to prevent detachment, characterized in that, include: case; A cover body, connected to the housing, is provided with insert holes; An insert assembly is slidably disposed within the housing along a first direction. The insert assembly includes a base, a conductive insert fixed on the base, and an anti-detachment structure disposed at the rear end of the conductive insert. The anti-detachment structure covers a portion of the outer periphery of the conductive insert. The insert assembly has a first position and a second position. When the insert assembly is in the first position, the conductive insert extends out of the insert hole. When the insert assembly is in the second position, both the conductive insert and the anti-detachment structure extend out of the insert hole. The cross-sectional dimension of the anti-detachment structure is larger than the cross-sectional dimension of the conductive insert. The locking device includes a fixing member disposed within the housing, a first fixing tooth disposed at the bottom of the fixing member, and a second fixing tooth disposed at the top of the base. One end of the fixing member is fixed to the housing, and the other end is suspended. The fixing member has a locked state and an unlocked state. When the fixing member is in the locked state, the first fixing tooth and the second fixing tooth are engaged. When the fixing member is in the unlocked state, the first fixing tooth and the second fixing tooth are disengaged.

2. The anti-detachment charger according to claim 1, characterized in that, The anti-detachment structure and the base are integrally formed, and the conductive insert extends from the anti-detachment structure to the side away from the base along the first direction.

3. The anti-detachment charger according to claim 1, characterized in that, Both the first fixing tooth and the second fixing tooth are unidirectional ratchet teeth, and the tooth surface inclination angles of the first fixing tooth and the second fixing tooth are the same; the inclined tooth surface of the second fixing tooth is located on the side closer to the conductive insert, and the inclined tooth surface of the first fixing tooth is located on the side closer to the fixing end of the fixing member.

4. The anti-detachment charger according to claim 3, characterized in that, The fixing component is provided with a lever, and the cover is provided with a lever hole, through which the lever extends.

5. The anti-detachment charger according to claim 4, characterized in that, The fastener is L-shaped and includes a first connecting arm extending along a first direction and a second connecting arm extending upward from the first connecting arm. The first connecting arm is fixedly connected to the housing, and the lever is fixed to the front side of the second connecting arm.

6. The anti-detachment charger according to claim 1, characterized in that, The cover and the housing are provided with a slot and a buckle, respectively, and are connected by the engagement of the slot and the buckle.

7. The anti-detachment charger according to claim 1, characterized in that, The cover has slide rails extending along a first direction on both sides, and the base has sliders on both sides, with the sliders slidably connected to the slide rails.

8. The anti-detachment charger according to claim 1, characterized in that, The housing is provided with a receiving cavity, the insert assembly is located in the receiving cavity, and the cover is provided with a connecting plate extending into the receiving cavity along a first direction, the connecting plate abutting against the inner wall of the receiving cavity.

9. The anti-detachment charger according to claim 8, characterized in that, The base is provided with conductive terminals, the receiving cavity is provided with conductive springs extending in a first direction, the connecting plate is provided with clearance openings, and the conductive terminals pass through the clearance openings to be electrically connected to the conductive springs.

10. The anti-detachment charger according to claim 8, characterized in that, An expansion joint is provided between adjacent connecting plates.

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