Charger with enclosing protective structure
Patent Information
- Application Number
- CN202522477440.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-21
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-11-21
AI Technical Summary
Traditional chargers have insufficient connection strength between the charging interface and the casing, and the interface area is poorly protected, which can easily lead to the interface becoming loose, displaced or damaged, and it is also prone to deformation when dropped or impacted.
The system adopts a combination structure of interface protection plate and protective frame. The interface protection plate provides secondary fixation for the charging interface terminals, while the protective frame forms an enclosed protection, enhancing the connection strength and impact resistance of the interface area.
It improves the connection stability and protection performance of the charging interface, reduces the risk of interface loosening and damage, and enhances the overall stability and assembly precision of the structure.
Smart Images
Figure CN224935406U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of charger technology, specifically a charger with an enclosed protective structure. Background Technology
[0002] As a core power supply component for electronic devices, the charger's casing design directly affects the product's durability, protection, and lifespan. Currently, most mainstream chargers on the market use a one-piece injection-molded casing: typically consisting of a front and rear shell fixed by clips, screws, or ultrasonic welding. The charging interface (such as USB-A or USB-C) is directly embedded in a pre-drilled opening in the front shell, with the interface's outer perimeter tightly fitting against the edge of the opening, without any independent protective components.
[0003] This traditional shell structure has significant design flaws in practical applications: 1. Insufficient connection strength between the interface and the housing: The charging interface of conventional chargers is only fixed by the edge of the opening in the housing, and there is no reinforced connection structure between the interface and the housing. When plugging or unplugging the charging cable, the lateral pulling or torsional force is directly applied to the contact point between the interface and the housing. Long-term repeated operation can easily cause the interface to loosen or shift, and even cause the edge of the opening in the housing to crack, resulting in poor contact or detachment of the interface. 2. Weak protection in the interface area: The interface area of the integrated casing is only basically protected by the outer shell of the interface itself, with no additional enclosure structure around the interface. In daily use, if the charger is accidentally dropped or bumped, the interface shell is easily deformed and the internal terminals are damaged.
[0004] Therefore, it is necessary to propose a new technical solution to address the above problems. Utility Model Content
[0005] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.
[0006] A charger with an enclosed protective structure includes: The charger body has at least one charging interface terminal at its front end; An interface protection plate is fixedly connected to the front end face of the charger body, and the interface protection plate has charging interface mounting through holes corresponding to the charging interface terminals one by one, and the charging interface terminals are inserted into the corresponding charging interface mounting through holes. The protective frame is a frame structure adapted to the outer periphery of the interface protection plate. It surrounds the outer periphery of the interface protection plate, and one end of the protective frame is fixedly connected to the front end of the charger body. The other end extends along the thickness direction of the interface protection plate to form a protective enclosure around the outer periphery of the interface protection plate.
[0007] As a further embodiment of this utility model: the thickness of the protective frame is not less than the thickness of the interface protection plate, so that the end of the protective frame away from the charger body protrudes from the outer surface of the interface protection plate.
[0008] As a further embodiment of this utility model: after the interface protection plate is fixed to the front end face of the charger body, a stepped groove is formed in the outer peripheral area of the front end face of the charger body that is not covered by the interface protection plate, and one end of the protective frame is adapted to be embedded in the stepped groove.
[0009] As a further embodiment of this utility model: the interface protection plate and the front end face of the charger body are in surface contact fit, the protective frame and the front end face of the charger body are also in surface contact fit, and the fit surfaces of the surface contact are all flat contact surfaces.
[0010] As a further embodiment of this utility model: the charger body is equipped with at least two different types of charging interface terminals, and the interface protection plate is provided with at least two different types of charging interface mounting through holes for mounting different types of charging interface terminals respectively.
[0011] As a further embodiment of this utility model: the end of the protective frame away from the charger body is recessed inward to form a transition part, and the transition part is smoothly connected to the surface of the interface protection plate.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention provides secondary fixation to the charging interface terminals through an interface protection plate, dispersing the lateral tensile and torsional forces generated when plugging and unplugging the charging cable. This solves the problem of insufficient connection strength caused by traditional charger interfaces relying solely on openings in the housing for positioning. The protective frame enhances the impact resistance of the interface area through its enclosed protective structure, while reducing the accumulation of dust and debris around the interface. The surface contact fit between the interface protection plate, the protective frame, and the charger body, along with the limiting design of the stepped groove, improves the stability and assembly precision of the overall structure.
[0013] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is an exploded structural diagram of the present invention; Figure 3 This is a schematic diagram of the structure of the charger body and the interface protection plate in this utility model.
[0016] The reference numerals and names in the figure are as follows: 1. Charger body; 2. Charging interface terminal; 3. Interface protection plate; 4. Charging interface mounting through hole; 5. Protective frame; 6. Step groove; 7. Transition part. Detailed Implementation
[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0018] Please see Figure 1-3 In this embodiment of the utility model, a charger with an enclosed protective structure is mainly composed of three parts: the charger body 1, the interface protection plate 3, and the protective frame 5. The components work together to improve the connection strength and protection performance of the charger interface area.
[0019] The charger body 1 provides the mounting base and power supply core for the overall structure. It integrates a circuit module that enables charging. The front end face is machined to a flat structure, serving as the mounting reference surface for the interface protection plate 3 and the protective frame 5. The front end of the charger body 1 has at least one charging interface terminal 2, which is electrically connected to the internal circuit module to form a conductive connection with the external charging cable connector, enabling power transmission. Depending on the actual usage scenario, the charger body 1 can be configured with at least two different types of charging interface terminals 2, such as common interface types like USB-A and USB-C, to adapt to the charging needs of different electronic devices.
[0020] The interface protection plate 3 is a plate-shaped component with a certain structural strength. Its dimensions are designed according to the installation area of the front end face of the charger body 1. The plate has charging interface mounting through holes 4 that correspond one-to-one with the charging interface terminals 2. The shape and diameter of each charging interface mounting through hole 4 are precisely matched with the outer periphery of the corresponding charging interface terminal 2. When the charging interface terminal 2 is of different types and specifications, the corresponding charging interface mounting through holes 4 are also designed with corresponding types and specifications to ensure that the charging interface terminal 2 can be smoothly inserted and form a stable fit. The interface protection plate 3 is fixedly connected to the front end face of the charger body 1 by conventional fixing methods such as bolt fastening, snap connection, or adhesive bonding. After connection, the interface protection plate 3 and the front end face of the charger body 1 form a surface contact fit, and the contact surface is a flat contact surface to ensure the tightness of the connection between the two and avoid gaps or loosening. At the same time, the interface protection plate 3 limits the charging interface terminal 2, enhancing the connection stability between the charging interface terminal 2 and the charger body 1.
[0021] The protective frame 5 is a frame structure, and its inner contour is adapted to the outer contour of the interface protection plate 3, so that it can be tightly enclosed on the outer periphery of the interface protection plate 3. One end of the protective frame 5 is fixedly connected to the front end face of the charger body 1. The connection method can be the same as the fixing method of the interface protection plate 3. The protective frame 5 and the front end face of the charger body 1 are also surface contact fits together. The contact surface is a flat contact surface to ensure the flatness of the overall structure and the reliability of the connection after installation.
[0022] In terms of structural design, after the interface protection plate 3 is fixed to the front end face of the charger body 1, the outer peripheral area of the front end face of the charger body 1 not covered by the interface protection plate 3 naturally forms a stepped groove 6. The depth of the stepped groove 6 matches the thickness of one end of the protective frame 5. One end of the protective frame 5 is fitted into the stepped groove 6. Through the limiting effect of the stepped groove 6, the displacement of the protective frame 5 in the plane is further restricted, improving the stability of the connection between the protective frame 5 and the charger body 1. The protective frame 5 extends along the thickness direction of the interface protection plate 3, and its thickness is not less than the thickness of the interface protection plate 3, so that the end of the protective frame 5 away from the charger body 1 protrudes from the outer surface of the interface protection plate 3, forming a protective structure surrounding the interface area. When the charger is dropped or collided, the protective frame 5 can preferentially withstand the impact of external forces, avoiding direct damage to the interface protection plate 3 and the charging interface terminal 2.
[0023] In addition, the protective frame 5 is recessed inward at the end opposite to the charger body 1 to form a transition part 7. The inner wall of the transition part 7 adopts a smooth arc or inclined surface design, and the transition part 7 is smoothly connected to the outer surface of the interface protection plate 3. This will not hinder the plugging and unplugging operation of the charging cable connector, ensuring the smoothness of the plugging and unplugging process, and will also prevent the edge of the protective frame 5 from forming a sharp structure, reducing the risk of scratching the user or the charging cable during use.
[0024] Through the above structural design, the interface protection plate 3 provides secondary fixation for the charging interface terminal 2, dispersing the lateral tension and torsional forces generated when plugging and unplugging the charging cable. This solves the problem of insufficient connection strength caused by the traditional charger interface relying solely on the opening of the housing for limitation. The protective frame 5 enhances the impact resistance of the interface area through its enclosed protective structure, while reducing the accumulation of dust and debris around the interface. The surface contact fit between the interface protection plate 3, the protective frame 5, and the charger body 1, along with the limiting design of the stepped groove 6, improves the stability and assembly precision of the overall structure.
[0025] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.
Claims
1. A charger with an enclosed protective structure, characterized in that, include: The charger body has at least one charging interface terminal at its front end; An interface protection plate is fixedly connected to the front end face of the charger body, and the interface protection plate has charging interface mounting through holes corresponding to the charging interface terminals one by one, and the charging interface terminals are inserted into the corresponding charging interface mounting through holes. The protective frame is a frame structure adapted to the outer periphery of the interface protection plate. It surrounds the outer periphery of the interface protection plate, and one end of the protective frame is fixedly connected to the front end of the charger body. The other end extends along the thickness direction of the interface protection plate to form a protective enclosure around the outer periphery of the interface protection plate.
2. A charger with an enclosed protective structure according to claim 1, characterized in that, The thickness of the protective frame is not less than the thickness of the interface protection plate, so that the end of the protective frame away from the charger body protrudes from the outer surface of the interface protection plate.
3. A charger with an enclosed protective structure according to claim 1, characterized in that, After the interface protection plate is fixed to the front end face of the charger body, a stepped groove is formed in the outer peripheral area of the front end face of the charger body that is not covered by the interface protection plate, and one end of the protective frame is adapted to be embedded in the stepped groove.
4. A charger with an enclosed protective structure according to claim 1, characterized in that, The interface protection plate is in a surface contact fit with the front end face of the charger body, and the protective frame is also in a surface contact fit with the front end face of the charger body, and the contact surfaces are all flat contact surfaces.
5. A charger with an enclosed protective structure according to claim 1, characterized in that, The charger body is equipped with at least two different types of charging interface terminals, and the interface protection plate has at least two different types of charging interface mounting through holes for mounting different types of charging interface terminals.
6. A charger with an enclosed protective structure according to claim 1, characterized in that, The protective frame is recessed inward at the end opposite to the charger body to form a transition section, and the transition section is smoothly connected to the surface of the interface protection plate.