A mobile power supply with a fall-proof mechanism
By setting an air layer between the front and back shells of the power bank and using a secondary molding process, the power bank's drop resistance is enhanced, solving the problems of shell damage and battery safety hazards during drops, and achieving higher drop resistance and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FAB CHAIN SERVICE CO LTD
- Filing Date
- 2025-07-30
- Publication Date
- 2026-06-26
AI Technical Summary
Existing power banks are prone to cracking and deformation of the casing, battery damage and fire when dropped, posing a safety hazard.
The design incorporates a first air layer between the hard and soft outer shells, and a second air layer between the hard and soft bottom shells. This secondary molding process forms a cushioning air layer, which is then secured by fasteners, adhesive application, or ultrasonic welding to enhance drop resistance.
It improves the drop resistance and safety of the power bank, reducing the risk of casing damage and battery breakage caused by drops.
Smart Images

Figure CN224417884U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of portable power bank products, specifically a portable power bank with a drop-proof mechanism. Background Technology
[0002] A power bank, also known as a portable power bank, is a portable power system consisting of a lithium-ion battery or battery pack, circuitry, and a casing. It provides a stable DC output to digital devices such as mobile phones and tablets. Its core function is to solve the battery life problem for mobile devices outdoors or in situations without power.
[0003] Currently, most power banks on the market use hard plastic materials, a combination of hard plastic and soft plastic materials, or metal casings to encase electronic components. When dropped, these casings are prone to cracking and deformation. If the casing squeezes the battery, the battery may break or catch fire, posing safety hazards. Utility Model Content
[0004] The purpose of this invention is to provide a portable power bank with a drop-proof mechanism to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a mobile power supply with a drop-proof mechanism, comprising a front shell assembly and a bottom shell assembly, wherein a battery is disposed within the bottom shell assembly, the front shell assembly comprises a hard front shell and a soft front shell, wherein a first air layer is disposed between the hard front shell and the soft front shell, and the bottom shell assembly comprises a hard bottom shell and a soft bottom shell, wherein a second air layer is disposed between the hard bottom shell and the soft front shell.
[0006] As a preferred embodiment of this invention, the front shell assembly and the bottom shell assembly are fixed together by one of the following methods: fastening, adhesive application, or ultrasonic welding.
[0007] As a preferred embodiment of this invention, the hard outer shell and soft outer shell, as well as the hard bottom shell and soft bottom shell, are all formed using a two-stage molding process.
[0008] As a preferred embodiment of the present invention, the first air layer and the second air layer are formed by an air-assisted method.
[0009] As a preferred embodiment of the present invention, the bottom shell assembly is provided with a PCBA board, and the PCBA board is electrically connected to the battery.
[0010] Compared with the prior art, the beneficial effects of this utility model are:
[0011] This power bank with a drop-proof mechanism uses a secondary molding process, where hard plastic is molded into soft plastic, and then a cushioning air pad is injected using an air-assisted molding method. This adds an air protection layer to the product surface, making the product more drop-resistant and safer. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of a portable power bank with a drop-proof mechanism according to the present invention.
[0013] Figure 2 This is a cross-sectional view of a portable power bank with a drop-proof mechanism according to the present invention.
[0014] In the diagram: 1. Front shell assembly; 2. Back shell assembly; 3. Battery; 4. Hard adhesive for front shell; 5. Soft adhesive for front shell; 6. First air layer; 7. Hard adhesive for back shell; 8. Soft adhesive for back shell; 9. Second air layer; 10. PCBA board. Detailed Implementation
[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0016] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, 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 utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0018] Please see Figure 1-2 The present invention provides an embodiment of a mobile power supply with a drop-proof mechanism, comprising a front shell assembly 1 and a bottom shell assembly 2. The bottom shell assembly 2 contains a battery 3. The front shell assembly 1 includes a hard front shell 4 and a soft front shell 5, with a first air layer 6 between the hard front shell 4 and the soft front shell 5. The bottom shell assembly 2 includes a hard bottom shell 7 and a soft bottom shell 8, with a second air layer 9 between the hard bottom shell 7 and the soft front shell 5.
[0019] refer to Figure 1 The front shell assembly 1 and the bottom shell assembly 2 are fixed together by one of the following methods: fastening, adhesive application, or ultrasonic welding.
[0020] As a technical optimization of this utility model, a sealed space can be formed to enclose the battery 3.
[0021] refer to Figure 2 The hard plastic 4 and soft plastic 5 of the front shell, and the hard plastic 7 and soft plastic 8 of the bottom shell are all formed by a two-stage molding process.
[0022] As a technical optimization of this utility model, an air layer is formed in the middle through secondary molding and coating.
[0023] refer to Figure 2 The first air layer 6 and the second air layer 9 are formed by air-assisted process.
[0024] As a technical optimization of this utility model, the air layer can increase the buffering force and improve the impact resistance.
[0025] refer to Figure 1 The bottom shell assembly 2 contains a PCBA board 10, which is electrically connected to the battery 3.
[0026] As a technical optimization of this utility model, PCBA board 10 is used as a connection port for input power and output power.
[0027] The working principle of a power bank with a drop-proof mechanism is described in detail below: the front shell assembly 1 and the bottom shell assembly 2 are prepared by a secondary molding process, and an air layer is set inside the front shell assembly 1 and the bottom shell assembly 2. The soft rubber material on the outside of the front shell assembly 1 and the bottom shell assembly 2 forms a buffer, and the internal air layer forms a secondary buffer. The battery 3 is placed between the front shell assembly 1 and the bottom shell assembly 2, and the front shell assembly 1 and the bottom shell assembly 2 are fixed to protect the battery 3.
[0028] 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 illustrative 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. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A portable power bank with a drop-proof mechanism, comprising a front shell assembly (1) and a bottom shell assembly (2), characterized in that: The bottom shell assembly (2) contains a battery (3), the top shell assembly (1) includes a hard top shell (4) and a soft top shell (5), a first air layer (6) is provided between the hard top shell (4) and the soft top shell (5), the bottom shell assembly (2) includes a hard bottom shell (7) and a soft bottom shell (8), a second air layer (9) is provided between the hard bottom shell (7) and the soft top shell (5).
2. A portable power bank with a drop-proof mechanism according to claim 1, characterized in that: The front shell assembly (1) and the bottom shell assembly (2) are fixed together by one of the following methods: fastening, adhesive application, or ultrasonic welding.
3. A portable power bank with a drop-proof mechanism according to claim 1, characterized in that: The hard plastic shell (4) and soft plastic shell (5), and the hard plastic shell (7) and soft plastic shell (8) are all formed by a two-stage molding process.
4. A portable power bank with a drop-proof mechanism according to claim 1, characterized in that: The first air layer (6) and the second air layer (9) are formed by air-assisted method.
5. A portable power bank with a drop-proof mechanism according to claim 1, characterized in that: The bottom shell assembly (2) contains a PCBA board (10), which is electrically connected to the battery (3).