Anti-loosening mobile phone charger

Abstract

The utility model discloses an anti-loosening mobile phone charger, which comprises a shell and a plug arranged at the end part of the shell, sliding mechanisms are symmetrically arranged on the two sides of the shell, and the sliding mechanisms are connected with suction cup assemblies capable of moving along the extension direction of the plug; displacement cavities are formed in the two sides of the shell corresponding to the motion trail of the suction cup assembly, hinge covers are arranged at the opening ends of the displacement cavities, the edges of the hinge covers are connected with the shell through elastic hinges, the hinge covers are pushed to be opened when the suction cup assembly displaces, and the hinge covers are automatically closed when the suction cup assembly resets. The technical scheme of the utility model aims to solve the problem that the existing charger is easy to loosen.

Description

Technical Field

[0001] This utility model relates to the field of mobile phone charger technology, and in particular to an anti-loosening mobile phone charger. Background Technology

[0002] Current mobile phone charger technology has achieved high-speed charging, multi-protocol compatibility, and miniaturization, but its physical connection structure still generally uses the traditional plug form. When existing charger plugs contact wall sockets, they mainly rely on the clamping force of the metal springs inside the socket for fixation. However, long-term plugging and unplugging or frequent use can easily lead to fatigue and deformation of the metal springs, resulting in a decrease in clamping force. In addition, as fast charging power increases, although the size of chargers shrinks, their weight increases significantly (especially high-power fast charging heads). When it is inserted vertically into a wall socket, the charger body is continuously pressed down by gravity, further aggravating the imbalance of friction between the plug and the socket, causing the plug to gradually slide down or even fall off with slight contact. When the plug is easily loosened due to gravity or external force, causing charging interruption, it severely affects the user experience; more seriously, intermittent power on and off may produce an electric arc effect, posing a potential electrical fire hazard. Utility Model Content

[0003] The main purpose of this utility model is to provide a mobile phone charger that prevents loosening, aiming to solve the problem of existing mobile phone chargers being easily loosened.

[0004] To achieve the above objectives, the present invention provides an anti-loosening mobile phone charger, comprising a housing and a plug located at the end of the housing.

[0005] The housing is symmetrically provided with sliding mechanisms on both sides, and the sliding mechanisms are connected to suction cup assemblies that can be displaced along the extension direction of the plug.

[0006] The housing has displacement cavities on both sides corresponding to the movement trajectory of the suction cup assembly. The opening end of the displacement cavity is provided with a hinged cover, the edge of which is connected to the housing through an elastic hinge. When the suction cup assembly moves, it pushes the hinged cover to open, and when the suction cup assembly returns to its original position, the hinged cover automatically closes.

[0007] In one possible implementation, the two side walls of the housing are recessed inward to form a sunken area, the horizontal height of the sunken area is lower than the horizontal height of the central boss of the housing, and the unfolded height of the hinged cover in the open state does not exceed the height of the boss.

[0008] In one possible implementation, the sliding mechanism includes a groove on the side of the housing and a sliding member assembled therein, the sliding member being fixedly connected to the suction cup assembly.

[0009] In a possible implementation, the suction cup assembly comprises a base and a plurality of suction cup bodies, the base is slidably arranged in the displacement cavity and fixedly connected with the sliding mechanism, and each of the suction cup bodies is arranged on the side of the base facing the plug.

[0010] In a possible implementation, the base extends to form a connecting portion adjacent to one side of the plug, a surface of the connecting portion is covered with an elastic silica gel layer, and each of the suction cup bodies is integrally formed on a surface of the elastic silica gel layer and arranged at equal intervals along a length direction of the connecting portion.

[0011] The technical scheme of the utility model discloses a sliding mechanism and a suction cup assembly are arranged on both sides of the shell of the mobile phone charger, the sliding mechanism can push the suction cup assembly to automatically extend when the plug is inserted into the socket, and the suction cup assembly is tightly attached to the wall surface of the socket to form mechanical anchoring, thereby effectively preventing the charger from falling off due to gravity or external force. The problem that the metal spring sheet of the traditional plug is deformed due to fatigue caused by long-term plugging and unpluging and the charger is loosened is solved. The automatic opening and closing system of the hinge cover and the displacement cavity realizes dynamic sealing during the extension and retraction of the suction cup, and prevents the suction cup from losing the adsorption function due to dust accumulation. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to the structures shown in the drawings without creative labor for those skilled in the art.

[0013] Fig. 1 It is a side view of an embodiment of the utility model;

[0014] Fig. 2 It is a structure schematic view of the suction cup assembly of the utility model when not working;

[0015] Fig. 3 It is a structure schematic view of the suction cup assembly of the utility model when working.

[0016] EXPLANATION OF DRAWINGS:

[0017] 1, shell;11, displacement cavity;12, sunken area;2, plug;3, sliding mechanism;31, sliding groove;32, sliding part;4, suction cup assembly;41, base;411, connecting portion;412, elastic silica gel layer;42, suction cup body;51, hinge cover;52, elastic hinge.

[0018] The realization, functional characteristics and advantages of the utility model will be further explained by combining with the embodiments and referring to the drawings. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0020] In order to solve the problems in the background art, the utility model provides a kind of anti-loosening mobile phone charger, including shell 1 and the plug 2 of being arranged at the end of shell 1, the sliding mechanism 3 of being symmetrically provided with on the both sides of shell 1, the suction cup assembly 4 of being connected with the displacement of plug 2 extension direction;Displacement cavity 11 is equipped with on the both sides of shell 1 corresponding the movement track of suction cup assembly 4, the opening end of displacement cavity 11 is equipped with hinged cover 51, its edge is connected with shell 1 by elastic hinge 52, suction cup assembly 4 is opened when pushing hinged cover 51 when displacement, hinged cover 51 is automatically closed when suction cup assembly 4 resets.

[0021] Combined with reference Figs. 1-3 As shown in the figure, in the present embodiment, shell 1 is made of flame-retardant PC material and is injection molded into a cuboid structure, and a charging circuit module is integrated inside the shell 1. The front end of the shell 1 is provided with a plug 2, which is a flat double-pole metal plug and is in electrical communication with the internal circuit of the shell 1. The sliding mechanism 3 is symmetrically arranged on both sides of the shell 1 and is composed of a side-pushing structure formed by a sliding rail and a sliding block. The sliding rail is fixed to the inner surface of the side wall of the shell 1 along the extension direction of the plug 2, and the sliding block is slidingly connected with the sliding rail and is rigidly connected with the suction cup assembly 4 on the inner side.

[0022] The suction cup assembly 4 includes a flexible silica gel suction cup and a support base 41. The support base 41 is an ABS plastic frame, the front end (i.e. the end facing the plug 2) is fixedly bonded with the suction cup, and is fixedly connected with the sliding mechanism 3. A long strip-shaped displacement cavity 11 is provided on the both side walls of the shell 1 corresponding to the movement path of the suction cup assembly 4, the length direction of the displacement cavity 11 is consistent with the sliding rail, the opening end thereof faces one side of the plug 2, and the cavity depth is two-thirds of the length of the shell 1. The opening end of the displacement cavity 11 is covered with a hinged cover 51, which is an arc-shaped sheet made of the same material as the shell 1, and the edge thereof is connected with the side wall of the shell 1 through an elastic hinge 52. The elastic hinge 52 is integrally formed with TPU material, and in normal state, it drives the hinged cover 51 to close to cover the displacement cavity 11.

[0023] When the user inserts the plug 2 into the wall socket, the shell 1 is manually pushed in the direction of the socket. At this time, the sliding mechanism 3 on both sides of the shell 1 is subjected to an axial thrust, and the sliding block slides along the sliding rail in the direction of the plug 2 extension, and the suction cup assembly 4 is synchronously pushed forward. When the suction cup is pushed to the opening end of the displacement cavity 11 with the support base 41, the support base 41 contacts and pushes the hinged cover 51 at the front end, overcomes the closing torque of the elastic hinge 52, and makes the hinged cover 51 flip open outward around the hinge axis, and the suction cup extends out of the displacement cavity 11 to the outside of the shell 1. When the plug 2 is completely inserted into the socket, the suction cup is tightly attached to the socket under the push of the support base 41. When the charger is pulled out, the user pulls the shell 1 in the opposite direction, the suction cup is pulled away from the wall under the tension, and the sliding block is reversely reset on the sliding rail. The support base 41 pulls the suction cup assembly 4 to retract into the displacement cavity 11. When the suction cup is completely in the cavity, the restoring force of the elastic hinge 52 drives the hinged cover 51 to automatically close, restoring the complete closed state of the side wall of the shell 1, and preventing dust from entering the displacement cavity 11.

[0024] In a possible implementation, the two side walls of the shell 1 are inwardly recessed to form a sunken area 12, the horizontal height of the sunken area 12 is lower than the horizontal height of the middle boss of the shell 1, and the unfolded height of the hinged cover 51 in the open state does not exceed the height of the boss.

[0025] For reference Figs. 1-3 As shown, in the present embodiment, the two side walls of the shell 1 are inwardly recessed to form symmetrically distributed sunken areas 12, the horizontal height of the sunken areas 12 is lower than the horizontal height of the middle boss of the shell 1, and the boss is located at the central position of the top surface of the shell 1 and is integrally formed as an upwardly protruding platform structure during injection molding of the shell 1. The height difference between the top surface of the boss and the bottom surface of the sunken area 12 is five to six millimeters. The hinged cover 51 is completely embedded in the sunken area 12 when it is normally closed, and its outer surface is flush with the outer surface of the side wall of the shell 1. When the suction cup assembly 4 is pushed outward, the hinged cover 51 is pushed by the support base 41 and flipped outward around the axis of the elastic hinge 52 to an unfolded angle of ninety to one hundred degrees. At this time, the unfolded height of the outer edge of the hinged cover 51 from the bottom surface of the sunken area 12 is four to four and a half millimeters, which does not exceed two-thirds of the height of the top surface of the boss. This structure design makes the unfolded part of the hinged cover 51 always be limited within the height of the boss in the fully open state, avoiding bumping damage or conspicuous appearance caused by excessive outward protrusion of the hinged cover 51.

[0026] In a possible implementation, the sliding mechanism 3 includes a sliding groove 31 arranged on the side surface of the shell 1 and a sliding piece 32 fitted therein, and the sliding piece 32 is fixedly connected with the suction cup assembly 4.

[0027] For reference Figs. 1-3As shown, in the embodiment, the sliding groove 31 is opened on the side wall of the shell 1 along the extension direction of the plug 2, and has a dovetail shape in cross section, and the upper and lower sides of the groove are provided with guide rails. The sliding member 32 adopts a side push key structure, and the exposed end face is provided with anti-skid lines, and is embedded in the sliding groove 31 and is in sliding cooperation with the guide rails, and the bottom is fixedly connected with the suction cup assembly 4 through bolts. When the user pushes and pulls the sliding member 32, the sliding member 32 translates along the sliding groove 31 to the plug 2 direction, driving the suction cup assembly 4 to displace synchronously; when the force is reversed, the sliding member 32 retreats and resets along the sliding groove 31.

[0028] In a possible implementation, the suction cup assembly 4 includes a base 41 and a suction cup body 42, the base 41 is slidably arranged in the displacement cavity 11 and fixedly connected with the sliding mechanism 3, and each of the suction cup bodies 42 is arranged on the side end face of the base 41 facing the plug 2.

[0029] In combination with reference Figs. 1-3 As shown, in the embodiment, the base 41 is made of aluminum alloy by pressure casting and has a long strip structure. The two sides are provided with dovetail-shaped guide grooves which are in sliding cooperation with the guide rails on the inner wall of the displacement cavity 11, so as to ensure that the base 41 does not deviate when linearly displacing along the extension direction of the plug 2. The front end face of the base 41 towards the plug 2 side is provided with two symmetrically distributed circular mounting holes, and the holes are fixedly provided with the suction cup bodies 42 which are integrally injection molded by flexible silica gel material. The rear end of the base 41 is rigidly connected with the sliding block of the sliding mechanism 3 through stainless steel bolts, and the bolt heads are embedded in the counterbores reserved in the inside of the base 41, so as to avoid interfering with the sliding action.

[0030] In a possible implementation, the base 41 is extended to form a connecting part 411 adjacent to one side of the plug 2, the surface of the connecting part 411 is covered with an elastic silica gel layer 412, the suction cup body 42 is integrally formed on the surface of the elastic silica gel layer 412, and each of the suction cup bodies 42 is arranged at equal intervals along the length direction of the connecting part 411. Specifically, the side of the base 41 adjacent to the plug 2 is horizontally extended along the extension direction of the plug 2 to form a plate-shaped connecting part 411. The surface of the connecting part 411 is covered with an elastic silica gel layer 412 with a thickness of 0.8mm to 1mm by insert injection molding process, and the suction cup body 42 is integrally formed with the silica gel layer. The suction cup body 42 includes two conical suction cup units arranged at equal intervals along the length direction of the connecting part 411.

[0031] The same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components; in the description of the present application, it is understood that if the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right" and the like are based on the orientations or positional relationships shown in the drawings, they are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationships in the drawings are only used for exemplary illustration, and cannot be understood as a limitation on the present patent, for those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0032] The above is only a preferred embodiment of the present application, and is not used to limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A mobile phone charger with anti-loosening feature, comprising a housing and a plug disposed at the end of the housing, characterized in that, The housing is symmetrically provided with sliding mechanisms on both sides, and the sliding mechanisms are connected to suction cup assemblies that can be displaced along the extension direction of the plug. The housing has displacement cavities on both sides corresponding to the movement trajectory of the suction cup assembly. The opening end of the displacement cavity is provided with a hinged cover, the edge of which is connected to the housing through an elastic hinge. When the suction cup assembly moves, it pushes the hinged cover to open, and when the suction cup assembly returns to its original position, the hinged cover automatically closes.

2. The anti-loosening mobile phone charger according to claim 1, characterized in that, The two side walls of the housing are recessed inward to form a sunken area. The horizontal height of the sunken area is lower than the horizontal height of the central boss of the housing, and the unfolded height of the hinged cover in the open state does not exceed the height of the boss.

3. The anti-loosening mobile phone charger according to claim 1, characterized in that, The sliding mechanism includes a groove on the side of the housing and a sliding member assembled therein, the sliding member being fixedly connected to the suction cup assembly.

4. The anti-loosening mobile phone charger according to claim 1, characterized in that, The suction cup assembly includes a base and suction cup bodies. The base is slidably disposed in the displacement cavity and fixedly connected to the sliding mechanism. Each suction cup body is disposed on the end face of the base facing the plug.

5. The anti-loosening mobile phone charger according to claim 4, characterized in that, The base extends to one side of the plug to form a connecting portion. The surface of the connecting portion is covered with an elastic silicone layer. The suction cups are integrally formed on the surface of the elastic silicone layer, and the suction cups are arranged at equal intervals along the length of the connecting portion.

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