Electric bicycle charging socket protection device

Abstract

The invention relates to the technical field of charging socket protection, and discloses an electric bicycle charging socket protection device which comprises a charging socket mechanism mounted on an electric bicycle and a charging plug inserted into the charging socket mechanism, and the charging socket mechanism comprises a sleeve frame fixedly mounted on the electric bicycle. The interior of the sleeve frame is fixedly connected with a connecting plate, and one side of the connecting plate is fixedly connected with at least two conductive insertion blocks used for being inserted into a charging plug. According to the electric bicycle charging socket protection device, the protection frame is arranged and used for conducting protection treatment on a conductive insertion block in the sleeve frame, rainwater invasion and damage to a charging part are effectively prevented, a through hole is shielded through the protection assembly, the conductive insertion block can be effectively prevented from being exposed, and the charging socket is protected. Even if a child inserts a finger or a metal part into the protection frame, the finger or the metal part cannot be in direct contact with the conductive insertion block, so that the protection performance of the charging socket is improved.

Description

Technical Field

[0001] The invention relates to the technical field of charging socket protection, and in particular to a charging socket protection device for an electric bicycle. Background Art

[0002] An electric bicycle is a vehicle that uses a battery as an auxiliary energy source and is based on an ordinary bicycle. It is equipped with a motor, controller, battery, handlebars, brake handles and other operating components and a display instrument system. The battery is one of the important components of an electric bicycle. When the battery of an electric bicycle is low on power, it is generally necessary to replace the battery or use a charging component to charge the electric bicycle.

[0003] At present, when charging, the existing electric bicycles use the charger to electrically connect the charging pile with the electric bicycle battery to form a charging operation; and the rechargeable electric bicycles generally have a charging socket at the front end of the seat cushion; in order to protect the charging socket, the existing electric bicycles provide a flip cover at the position of the charging socket, and the cover is used for protection. However, the protection performance of this method is poor, not only lacking the protection limitation function, but also non-users can arbitrarily open the cover to damage it, thereby causing dangers such as short circuit and electric shock. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the present invention provides an electric bicycle charging socket protection device, which is used to protect the conductive plug inside the frame through the provision of a protection frame, effectively preventing the intrusion of rainwater and causing damage to the charging components, and the protective component shields the through hole, which can effectively prevent the conductive plug from being exposed, so that even if children and other persons insert their fingers or metal parts into the protection frame, they cannot directly contact the conductive plug, thereby improving the protection performance of the charging socket, and solving the problem that the protection of the electric bicycle charging socket in the prior art generally adopts a single cover plate for protection, and the cover plate lacks a limiting function, so that some children can easily unfold the cover plate and cause dangers such as electric shock and short circuit, and when the cover plate is damaged and falls off, its conductive block is exposed and lacks further protection.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a charging socket protection device for an electric bicycle, comprising a charging socket mechanism installed on the electric bicycle and a charging plug inserted into the charging socket mechanism, wherein the charging socket mechanism comprises a sleeve frame fixedly installed on the electric bicycle, a connecting plate is fixedly connected to the interior of the sleeve frame, and at least two conductive plugs for inserting into the charging plug are fixedly connected to one side of the connecting plate, and the two conductive plugs are connected to a battery pack built into the electric bicycle through a wire;

[0008] A protective frame is telescopically arranged inside the sleeve frame, and at least two through holes are opened on one side of the protective frame. The charging plug is used to be inserted into the protective frame, and at least two conductive plugs are used to be inserted into the charging plug through the at least two through holes for power supply;

[0009] The protection frame is provided with two protection components for shielding at least two through holes.

[0010] Preferably, the protection component includes a movable frame fixed on both sides of the protection frame, and the interior of the movable frame is slidably connected to an L-shaped plate frame through a sliding rod, one end of the L-shaped plate frame is fixedly connected to a sealing baffle for shielding one of the through holes, and the other end of the L-shaped plate frame is fixedly connected to a touch block, and the inner side surface of the touch block extends to the interior of the protection frame;

[0011] The charging plug inserted into the protection frame is used to squeeze and push out the touch block protruding from the protection frame.

[0012] Preferably, movable openings are provided on both sides of the protective frame, and the inner side surface of the touch block extends into the interior of the protective frame through the movable opening, the inner side surface of the touch block is arranged as an inclined surface, and the interior of the movable frame is fixedly connected with a first spring for squeezing the touch block into the interior of the protective frame.

[0013] Preferably, a sliding groove is provided at the bottom of the sleeve frame, and an L-shaped sliding block is fixedly connected to the bottom of one side of the protective frame. The bottom of the L-shaped sliding block extends to the bottom of the sleeve frame through the sliding groove, and the bottom of the sleeve frame is fixedly connected to an extrusion spring for extruding the L-shaped sliding block.

[0014] Preferably, at least one limiting component for limiting the position of the shrunk protective frame is provided inside the sleeve frame.

[0015] Preferably, the limiting assembly comprises a sleeve block fixed to one side edge of the protective frame and an extrusion cylinder fixedly connected to the outer side of the sleeve frame, and a circular hole is opened inside the sleeve block;

[0016] The extrusion cylinder is slidably connected to a T-shaped protrusion for inserting into the circular hole, and the protruding end of the T-shaped protrusion is hemispherical. The extrusion cylinder is fixedly connected to a second spring for moving the T-shaped protrusion toward the inside of the sleeve frame.

[0017] Preferably, a protective cover plate is hinged at the opening of the protective frame, and a torsion spring is installed at the hinged end of the protective cover plate. A locking member for locking the protective cover plate is provided at the bottom of the protective frame.

[0018] Preferably, the locking member comprises an L-shaped limit block fixed to the bottom of the protective cover plate and a locking groove at the bottom of the protective frame, the bottom of the L-shaped limit block is provided with a limit opening, and the interior of the locking groove is slidably connected with a T-shaped latch block made of a metal material, and the bottom of the T-shaped latch block extends to the interior of the protective frame, and the bottom of the T-shaped latch block extends to the interior of the limit opening;

[0019] A spring group for pressing the T-shaped latch block downward is fixedly connected inside the locking groove, and an electromagnet for adsorbing the T-shaped latch block upward after power is turned on is fixedly connected to the top of the locking groove.

[0020] (III) Beneficial effects

[0021] Compared with the prior art, the present invention provides an electric bicycle charging socket protection device, which has the following beneficial effects:

[0022] 1. The present invention provides a protective frame to protect the conductive plug inside the casing, effectively preventing rainwater from intruding and damaging the charging components, and shielding the through hole by the protective component to effectively prevent the conductive plug from being exposed. Even if a child or other person inserts a finger or a metal component into the protective frame, the conductive plug cannot directly contact the conductive plug, thereby improving the protection performance of the charging port. This solves the problem that the protection of the electric bicycle charging port in the prior art generally adopts a single cover plate for protection, and the cover plate lacks a limiting function, so that some children can easily unfold the cover plate to cause electric shock, short circuit and other dangers, and when the cover plate is damaged and falls off, the conductive block is exposed and lacks further protection.

[0023] 2. The present invention can squeeze the T-shaped protrusion through the elastic force of the second spring itself, so that the T-shaped protrusion is inserted into the inside of the circular hole, thereby locking the sleeve block, and further ensuring the stability of the protective frame when it is retracted into the inside of the sleeve frame. The protruding end of the T-shaped protrusion is hemispherical, which is convenient for simple locking of the sleeve block, not only ensuring the stability of the protective frame when it is retracted into the inside of the sleeve frame, and preventing the squeezing force of the extrusion spring on the protective frame, which causes the charging plug to gradually fall off during the charging process, but also making it convenient for the user to pull the charging plug after charging is completed to lose the limit work, thereby facilitating the unfolding protection work of the protective frame.

[0024] 3. The present invention can squeeze the T-shaped latch block downward through the elastic force of the spring group itself, so that the T-shaped latch block moves downward. The downward movement of the T-shaped latch block can be inserted into the limiting opening at the bottom of the L-shaped limiting block, forming a locking of the L-shaped limiting block, thereby ensuring the protection of the protective cover plate on the opening of the protective frame to prevent malicious opening by non-users, thereby improving the protection performance. Through the adsorption force of the electromagnet on the T-shaped latch block upward, the T-shaped latch block can be removed from the limiting opening at the temporal part of the L-shaped limiting block through the upward movement of the T-shaped latch block. In combination with the setting of the torsion spring, the protective cover plate can be unfolded and charged, and has the function of automatic unfolding. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the installation of the electric bicycle charging socket protection device of the present invention;

[0026] Figure 2 For the present invention Figure 1 A schematic diagram of the structure of the protection device for the charging socket of an electric bicycle;

[0027] Figure 3 For the present invention Figure 2 A bottom view of the structure of the protective device for the charging socket of the electric bicycle;

[0028] Figure 4 For the present invention Figure 1 A structural cross-sectional view of the charging socket mechanism;

[0029] Figure 5 For the present invention Figure 1 A cross-sectional top view of the middle charging socket mechanism;

[0030] Figure 6 For the present invention Figure 4 A partial enlarged view of the middle A;

[0031] Figure 7 For the present invention Figure 5 Combination diagram of the middle protection component and the protection frame;

[0032] Figure 8 For the present invention Figure 7 A combined side view of the middle protection assembly and the protection frame;

[0033] Fig. 9 For the present invention Figure 8 A schematic diagram of the structure of the middle protection frame;

[0034] Fig.10 For the present invention Figure 8 Schematic diagram of the structure of the protection component.

[0035] In the figure: 1. Charging plug; 2. Frame; 3. Connecting plate; 4. Conductive plug;

[0036] 5. Protective frame; 51. Through hole; 52. Movable opening; 53. L-shaped sliding block; 54. Extrusion spring;

[0037] 6. Limiting assembly; 61. Bushing block; 62. Extrusion cylinder; 63. T-shaped protrusion; 64. Second spring;

[0038] 7. Protective assembly; 71. Movable frame; 72. Sliding rod; 73. L-shaped plate frame; 74. Sealing baffle; 75. Touch block; 76. First spring;

[0039] 8. Protective cover; 81. L-shaped limit block; 82. T-shaped latch block; 83. Spring assembly; 84. Electromagnet. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] Embodiment 1:

[0042] See attached Figure 1-10 , a charging socket protection device for an electric bicycle, comprising a charging socket mechanism installed on the electric bicycle and a charging plug 1 inserted into the charging socket mechanism, the charging socket mechanism comprising a sleeve frame 2 fixedly installed on the electric bicycle, a connecting plate 3 fixedly connected to the inside of the sleeve frame 2, and at least two conductive plug blocks 4 for inserting into the charging plug 1 are fixedly connected to one side of the connecting plate 3, and the two conductive plug blocks 4 are connected to a battery pack built into the electric bicycle through a wire;

[0043] The connection plate 3 is provided to facilitate installation of the conductive plug block 4 for current transmission. By inserting the conductive plug block 4 into the charging plug 1, the current can be transmitted to the conductive plug block 4 through the wire on the charging plug 1, and then the current is transmitted to the battery pack built into the electric bicycle through the wire on the conductive plug block 4, thereby forming a charging operation.

[0044] A protective frame 5 is telescopically arranged inside the sleeve frame 2, and at least two through holes 51 are opened on one side of the protective frame 5. The charging plug 1 is used to be inserted into the protective frame 5, and at least two conductive plugs 4 are used to be inserted into the charging plug 1 through the at least two through holes 51 for power supply;

[0045] The protective frame 5 is provided to protect the conductive plug 4 inside the sleeve frame 2, which not only prevents the intrusion of rainwater and damage to the charging components, but also prevents the conductive plug 4 from being exposed, further improving the protection performance of the charging socket;

[0046] The protection frame 5 is provided with two protection components 7 for shielding at least two through holes 51;

[0047] The protection component 7 is provided to shield the through hole 51 to prevent at least two conductive plugs 4 from being exposed. Even if a child or other person inserts a finger or a metal component into the protection frame 5, it cannot directly contact the conductive plug 4, thereby improving the protection performance of the charging socket.

[0048] The invention solves the problem that the protection of the charging socket of an electric bicycle in the prior art generally adopts a single cover plate for protection, and the cover plate lacks a limiting function, so that some children may easily unfold the cover plate and cause dangers such as electric shock and short circuit, and when the cover plate is damaged and falls off, its conductive block is exposed and lacks further protection;

[0049] It not only prevents water from entering on rainy days, but also prevents children from poking with screwdrivers or other similar metal tools to cause a short circuit, thereby damaging the battery and injuring the children.

[0050] See attached Figure 5 , Figure 7 , Figure 8 and Fig.10 The protection assembly 7 includes a movable frame 71 fixed on both sides of the protection frame 5, and the interior of the movable frame 71 is slidably connected to an L-shaped plate frame 73 through a sliding rod 72, one end of the L-shaped plate frame 73 is fixedly connected to a sealing baffle 74 for shielding one of the through holes 51, and the other end of the L-shaped plate frame 73 is fixedly connected to a touch block 75, and the inner side surface of the touch block 75 extends to the interior of the protection frame 5;

[0051] The sealing baffle 74 is provided to seal and shield the through hole 51, which not only prevents the intrusion of rainwater when not charging, but also prevents children from poking with screwdrivers or other similar metal tools to cause short circuit danger;

[0052] The sealing baffle 74 is fixedly connected to the touch block 75 by using an L-shaped plate frame 73, so that when the charging plug 1 drives the touch block 75, the sealing baffle 74 can be driven synchronously, so that the sealing baffle 74 can be automatically deployed;

[0053] The charging plug 1 inserted into the protection frame 5 is used to squeeze and push out the touch block 75 protruding from the protection frame 5;

[0054] When the charging plug 1 is inserted into the protective frame 5, the charging plug 1 can squeeze the touch block 75 protruding from the protective frame 5, thereby moving the touch block 75 out from the protective frame 5. Through the movement of the touch block 75, the sealing baffle 74 can be driven to move sideways through the L-shaped plate frame 73, thereby losing the obstruction of the through hole 51, thereby facilitating the insertion of the conductive plug 4 into the charging plug 1 for charging.

[0055] See attached Figure 4 , Figure 5 , Figure 7 , Fig. 9 and Fig.10 , both sides of the protective frame 5 are provided with movable openings 52, and the inner side surface of the touch block 75 extends to the inside of the protective frame 5 through the movable opening 52, the inner side surface of the touch block 75 is set as an inclined surface, and the inside of the movable frame 71 is fixedly connected with a first spring 76 for pressing the touch block 75 into the inside of the protective frame 5;

[0056] The movable opening 52 is provided to facilitate the movement of the touch block 75 from the inside of the movable frame 71 to the inside of the protective frame 5, so that when the charging plug 1 is inserted into the inside of the protective frame 5, the charging plug 1 can synchronously drive the touch block 75;

[0057] By setting the inner side surface of the touch block 75 as an inclined surface, it is not only convenient for the charging plug 1 to be better inserted into the protection frame 5, but also convenient for the charging plug 1 to drive the touch block 75 to form the expansion work of the sealing baffle 74;

[0058] Through the elastic force of the first spring 76 itself, the L-shaped limit block 81 can be squeezed, which can not only drive the touch block 75 to reinsert into the interior of the protective frame 5 through the movable opening 52, but also can synchronously drive the sealing baffle 74 to perform a reset movement, and re-seal and block the through hole 51. It has the function of automatic expansion or shielding, which further improves the protection performance of the charging socket.

[0059] See attached Figure 3 and Figure 4 A sliding groove is provided at the bottom of the sleeve frame 2, an L-shaped sliding block 53 is fixedly connected to the bottom of one side of the protection frame 5, the bottom of the L-shaped sliding block 53 extends to the bottom of the sleeve frame 2 through the sliding groove, and an extrusion spring 54 for extruding the L-shaped sliding block 53 is fixedly connected to the bottom of the sleeve frame 2;

[0060] By slidingly connecting the L-shaped sliding block 53 inside the sliding groove, the smoothness of the contraction or expansion of the protective frame 5 can be improved. The protective frame 5 can be squeezed by the elastic force of the squeezing spring 54 itself, so that when the charging plug 1 is moved out from the inside of the protective frame 5, the protective frame 5 can be moved out from the inside of the sleeve frame 2 at the same time.

[0061] Embodiment 2: Based on embodiment 1, the difference is that;

[0062] See attached Figure 5 At least one limiting component 6 for limiting the position of the retracted protective frame 5 is provided inside the sleeve frame 2;

[0063] The limiting assembly 6 is provided to limit the retracted protection frame 5 , thereby ensuring the stability of the charging plug 1 during charging.

[0064] The limiting assembly 6 includes a sleeve block 61 fixed to one side edge of the protection frame 5 and an extrusion cylinder 62 fixedly connected to the outer side of the sleeve frame 2, and a circular hole is opened inside the sleeve block 61; a T-shaped protrusion 63 for inserting into the circular hole is slidably connected inside the extrusion cylinder 62, and the protruding end of the T-shaped protrusion 63 is hemispherical, and a second spring 64 for moving the T-shaped protrusion 63 toward the inside of the sleeve frame 2 is fixedly connected inside the extrusion cylinder 62;

[0065] The elastic force of the second spring 64 can squeeze the T-shaped protrusion 63, so that the T-shaped protrusion 63 extends to the inside of the sleeve frame 2, and then is inserted into the inside of the circular hole, so as to lock the sleeve block 61, thereby ensuring the stability of the protection frame 5 contracted to the inside of the sleeve frame 2;

[0066] The protruding end of the T-shaped protrusion 63 is hemispherical, which facilitates the simple locking of the sleeve block 61. It not only ensures the stability of the protection frame 5 when it is retracted into the sleeve frame 2, but also prevents the squeezing force of the extrusion spring 54 on the protection frame 5, which causes the charging plug 1 to gradually fall off during the charging process. Moreover, after charging is completed, the user can pull the charging plug 1 to lose the limit work, thereby facilitating the unfolding of the protection frame 5.

[0067] Embodiment 3: Based on embodiment 1, the difference is that;

[0068] See attached Figure 1 , Figure 3 , Figure 4 and Figure 6 A protective cover plate 8 is hinged at the opening of the protective frame 5, and a torsion spring is installed at the hinged end of the protective cover plate 8. A locking member for locking the protective cover plate 8 is provided at the bottom of the protective frame 5;

[0069] The protective cover 8 is connected to the opening of the protective frame 5 in a hinged manner, so as to facilitate the fan-shaped expansion or closing of the protective cover 8, so as to form a protective operation when charging and not charging. The torsion spring is provided to improve the stability of the protective cover 8 in protecting the opening of the protective frame 5;

[0070] It should be noted here that the initial state of the torsion spring is the closed state of the protective cover plate 8 .

[0071] The locking member includes an L-shaped limit block 81 fixed to the bottom of the protective cover plate 8 and a locking groove at the bottom of the protective frame 5. A limit opening is provided at the bottom of the L-shaped limit block 81, and a metal T-shaped latch block 82 is slidably connected inside the locking groove. The bottom of the T-shaped latch block 82 extends to the inside of the protective frame 5, and the bottom of the T-shaped latch block 82 extends to the inside of the limit opening.

[0072] The T-shaped latch block 82 can be extended to the bottom of the protection frame 5 by moving downward, and then can be inserted into the limiting opening at the bottom of the L-shaped limiting block 81, so as to lock the L-shaped limiting block 81, thereby ensuring the protection work of the protective cover plate 8 on the opening of the protection frame 5;

[0073] A spring assembly 83 is fixedly connected inside the locking groove for pressing the T-shaped latch block 82 downward, and an electromagnet 84 is fixedly connected to the top of the locking groove for sucking the T-shaped latch block 82 upward after power is turned on.

[0074] Through the elastic force of the spring group 83 itself, the T-shaped latch block 82 can be squeezed downward, so that the T-shaped latch block 82 moves downward. The downward movement of the T-shaped latch block 82 can be inserted into the limiting opening at the bottom of the L-shaped limiting block 81, forming a locking of the L-shaped limiting block 81, thereby ensuring the protection of the protective cover plate 8 on the opening of the protective frame 5, preventing malicious opening by non-users, and improving the protection performance.

[0075] The electromagnet 84 adopts an electromagnetic mechanism in the prior art that generates magnetic attraction when powered on, and is connected to the power supply and control system of the electric bicycle, and is used to generate an adsorption force for the T-shaped latch block 82 to be adsorbed upward. The T-shaped latch block 82 can be moved away from the limiting opening of the temporal part of the L-shaped limiting block 81 by the upward movement of the T-shaped latch block 82. With the setting of the torsion spring, the protective cover plate 8 can be unfolded and charged, and has the function of automatic unfolding;

[0076] It should be noted here that the initial state of the torsion spring is the protective cover plate 8 being in an unfolded state.

[0077] It should be noted that the term "comprises" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to such process, method, article, or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0078] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A charging socket protection device for an electric bicycle, comprising a charging socket mechanism mounted on the electric bicycle and a charging plug (1) inserted into the charging socket mechanism, characterized in that: The charging socket mechanism comprises a sleeve frame (2) fixedly mounted on the electric bicycle, a connecting plate (3) fixedly connected to the interior of the sleeve frame (2), and at least two conductive plug blocks (4) for inserting into the interior of the charging plug (1) fixedly connected to one side of the connecting plate (3), the two conductive plug blocks (4) being connected to a battery pack built into the electric bicycle via a wire; A protective frame (5) is telescopically arranged inside the sleeve frame (2), at least two through holes (51) are opened on one side of the protective frame (5), the charging plug (1) is used to be inserted into the interior of the protective frame (5), and at least two conductive plug blocks (4) are used to be inserted into the interior of the charging plug (1) through the at least two through holes (51) to conduct electricity; The protection frame (5) is provided with two protection components (7) for shielding at least two through holes (51).

2. The electric bicycle charging socket protection device according to claim 1, characterized in that: The protection component (7) comprises a movable frame (71) fixed on both sides of the protection frame (5), and the interior of the movable frame (71) is slidably connected to an L-shaped plate frame (73) via a sliding rod (72), one end of the L-shaped plate frame (73) is fixedly connected to a sealing baffle (74) for shielding one of the through holes (51), and the other end of the L-shaped plate frame (73) is fixedly connected to a touch block (75), and the inner side surface of the touch block (75) extends to the interior of the protection frame (5); The charging plug (1) inserted into the protection frame (5) is used to squeeze and push out the contact block (75) protruding from the protection frame (5).

3. The electric bicycle charging socket protection device according to claim 2, characterized in that: Both sides of the protective frame (5) are provided with movable openings (52), and the inner side surface of the touch block (75) extends into the interior of the protective frame (5) through the movable opening (52), the inner side surface of the touch block (75) is arranged as an inclined surface, and a first spring (76) for pressing the touch block (75) into the interior of the protective frame (5) is fixedly connected to the interior of the movable frame (71).

4. The electric bicycle charging socket protection device according to claim 1, characterized in that: A sliding groove is provided at the bottom of the sleeve frame (2); an L-shaped sliding block (53) is fixedly connected to the bottom of one side of the protection frame (5); the bottom of the L-shaped sliding block (53) extends to the bottom of the sleeve frame (2) through the sliding groove; and a compression spring (54) for compressing the L-shaped sliding block (53) is fixedly connected to the bottom of the sleeve frame (2).

5. The electric bicycle charging socket protection device according to claim 4, characterized in that: At least one limiting component (6) for limiting the position of the retracted protection frame (5) is arranged inside the sleeve frame (2).

6. The electric bicycle charging socket protection device according to claim 5, characterized in that: The limiting assembly (6) comprises a sleeve block (61) fixed to one side edge of the protection frame (5) and an extrusion cylinder (62) fixedly connected to the outer side of the sleeve frame (2), and a circular hole is opened inside the sleeve block (61); The extrusion cylinder (62) is slidably connected to a T-shaped protrusion (63) for inserting into the circular hole, and the protruding end of the T-shaped protrusion (63) is hemispherical. The extrusion cylinder (62) is fixedly connected to a second spring (64) for moving the T-shaped protrusion (63) toward the inside of the sleeve frame (2).

7. The electric bicycle charging socket protection device according to claim 1, characterized in that: A protective cover plate (8) is hinged at the opening of the protective frame (5), and a torsion spring is installed at the hinged end of the protective cover plate (8). A locking piece for locking the protective cover plate (8) is arranged at the bottom of the protective frame (5).

8. The electric bicycle charging socket protection device according to claim 8, characterized in that: The locking member comprises an L-shaped limit block (81) fixed to the bottom of the protective cover plate (8) and a locking groove at the bottom of the protective frame (5); a limit opening is provided at the bottom of the L-shaped limit block (81); a T-shaped latch block (82) made of metal is slidably connected inside the locking groove; the bottom of the T-shaped latch block (82) extends to the inside of the protective frame (5); and the bottom of the T-shaped latch block (82) extends to the inside of the limit opening; A spring group (83) for pressing the T-shaped latch block (82) downward is fixedly connected inside the locking groove, and an electromagnet (84) for sucking the T-shaped latch block (82) upward after power is supplied is fixedly connected to the top of the locking groove.

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