Charger resistant to external shocks

Abstract

This utility model relates to the field of charger technology, and in particular to a charger resistant to external impact. It includes a housing and a main control circuit board disposed inside the housing. The housing includes an impact-resistant layer and a reinforcing layer disposed within the impact-resistant layer. The housing has an inner cavity for accommodating the main control circuit board. A first abutment strip is provided at the upper part of the inner cavity, a second abutment strip is provided below the first abutment strip and fixed to the lower part of the inner cavity, and a third abutment strip is provided on one side of the second abutment strip. All three abutment strips have rubber buffer strips. A first buffer assembly and a second buffer assembly are respectively provided on both sides of the main control circuit board. The upper part of the first buffer assembly abuts against one side of the inner cavity, and the lower part of the second buffer assembly abuts against the other side of the inner cavity. This utility model provides a charger resistant to external impact, improving the charger's impact resistance and meeting the protection requirements in practical use.

Description

Technical Field

[0001] This utility model relates to the field of charger technology, and in particular to a charger that is resistant to external impact. Background Technology

[0002] A charger is a device that provides power to electronic devices for charging. It typically works by connecting to an external power source, converting the current into a voltage and current suitable for the electronic device, and then transmitting it to the device through a specific interface to replenish its power. Chargers can come in different types and specifications to suit the needs of various electronic devices.

[0003] Existing chargers are susceptible to external impacts such as drops and collisions during daily use, leading to problems such as broken internal circuit boards, loose components, and damaged interfaces. Traditional chargers have insufficient shock resistance in their outer shells and lack a systematic internal cushioning structure, failing to effectively protect core components. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a charger that is resistant to external impact, improve the charger's impact resistance, and meet the protection requirements in actual use.

[0005] The present invention adopts the following technical solution:

[0006] A charger resistant to external impact includes a housing and a main control circuit board disposed inside the housing. The housing includes an impact-resistant layer and a reinforcing layer disposed inside the impact-resistant layer. The housing has an inner cavity for accommodating the main control circuit board. A first abutment strip is provided at the upper part of the inner cavity, a second abutment strip is provided below the first abutment strip and fixed to the lower part of the inner cavity, and a third abutment strip is provided on one side of the second abutment strip. The first abutment strip, the second abutment strip, and the third abutment strip are all provided with rubber buffer strips. A first buffer assembly and a second buffer assembly are respectively provided on both sides of the main control circuit board. The upper part of the first buffer assembly abuts against one side of the inner cavity, and the lower part of the second buffer assembly abuts against the other side of the inner cavity.

[0007] A further improvement to the above technical solution is that an output hole is provided on one side of the outer casing, and the output hole is covered with a dust cover. The number of dust covers is set to two, and the two dust covers are connected as one unit by a connecting strip.

[0008] A further improvement to the above technical solution is that the outer shell is connected to a cover plate and a transparent plate; the cover plate has a slot, and the slot is connected to an LED circuit board; the transparent plate is embedded in the cover plate, and the transparent plate is used to transmit the display light emitted by the LED circuit board to realize the visualization display of information.

[0009] A further improvement to the above technical solution is that the impact-resistant layer is a PC / ABS alloy plastic layer, and the reinforcing layer is a carbon fiber resin composite layer.

[0010] A further improvement to the above technical solution is that the main control circuit board extends outward and is provided with two metal pins, which pass through the outer casing and are used to connect and cooperate with an external power supply.

[0011] A further improvement to the above technical solution is that the upper surface of the main control circuit board is provided with electronic components, and a terminal circuit board is provided on one side of the electronic components. The terminal circuit board is connected to the main control circuit board through several snap-fit ​​blocks.

[0012] A further improvement to the above technical solution is that the terminal circuit board is connected to an output terminal, the output terminal is connected to an output hole, and the output terminal is used to connect to electrical equipment.

[0013] A further improvement to the above technical solution is that a snap-fit ​​groove is provided on one side of the terminal circuit board, the snap-fit ​​groove is composed of two strip structures, and the lower strip structure is provided with an inclined guide surface to guide the terminal circuit board to slide in for installation; an abutment block is provided on the rear side of the terminal circuit board, and after the terminal circuit board is installed in place, its back abuts against the abutment block to limit the displacement of the terminal circuit board within the housing.

[0014] A further improvement to the above technical solution is that the first abutting strip and the second abutting strip abut against one side of the main control circuit board, and the third abutting strip abuts against one side of the output terminal.

[0015] A further improvement to the above technical solution is that the first buffer assembly includes a support column, a support sleeve, and a first buffer spring; the top end of the support column is connected to one side of the inner cavity; the support sleeve is slidably fitted with the support column; the two ends of the first buffer spring are respectively connected to the support column and the support sleeve, and are used to provide elastic buffering force when the support column slides relative to the support sleeve; there are multiple second buffer assemblies, each of which includes a telescopic column, a buffer sleeve, and a second buffer spring; the top end of the telescopic column is connected to the main control circuit board, and the bottom end of the telescopic column extends to form a slider; the buffer sleeve is slidably fitted with the telescopic column, and both sides of the inner wall of the buffer sleeve are provided with movable grooves adapted to the sliding of the slider; the two ends of the second buffer spring are respectively connected to the telescopic column and the buffer sleeve, and are used to provide elastic buffering force when the telescopic column slides relative to the buffer sleeve.

[0016] The beneficial effects of this utility model are as follows:

[0017] This invention employs a multi-layered, multi-dimensional impact-resistant design to construct a three-dimensional protective system encompassing shell reinforcement, contact cushioning, and elastic absorption. First, the impact-resistant composite layer of the shell structurally enhances overall strength, resisting external impacts. Second, the inner cavity contact structure, combined with rubber buffer strips, weakens impact transmission through physical restriction and material buffering. Finally, the first and second buffer components absorb remaining impact energy with an elastic mechanical structure, protecting the internal core circuitry. Simultaneously, details such as the dust cover design and robust connection structure further enhance the charger's dustproof performance, connection reliability, and component stability. The synergistic effect of these multiple technical features enables the charger to effectively protect internal components from drops, collisions, and other external impacts, maintaining normal operation, extending service life, and meeting users' practical needs for high reliability and strong protection in chargers. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the charger that is resistant to external impact according to this utility model;

[0019] Figure 2 for Figure 1 An exploded diagram of a charger designed to withstand external impacts;

[0020] Figure 3 for Figure 1 A schematic diagram of the internal structure of a charger designed to withstand external impacts;

[0021] Figure 4 for Figure 1 A partial structural diagram of the charger's casing designed to withstand external impacts;

[0022] Figure 5 for Figure 4 A partial structural diagram of the outer shell from another angle;

[0023] Figure 6 for Figure 1 A schematic diagram of the main control circuit board of a charger designed to withstand external impacts;

[0024] Figure 7 for Figure 6 A structural schematic diagram of the main control circuit board from another angle;

[0025] Figure 8 for Figure 1 A schematic diagram of the structure of the first buffer component of the charger that protects against external impacts;

[0026] Figure 9 for Figure 1 A schematic diagram of the structure of the second buffer component of the charger that protects against external impacts.

[0027] The numbers on the map are:

[0028] 10. Outer shell; 11. Impact-resistant layer; 12. Reinforcing layer; 13. Inner cavity; 14. First abutment strip; 15. Second abutment strip; 16. Third abutment strip; 17. Rubber buffer strip; 20. Main control circuit board; 21. Metal pin; 22. Electronic component; 23. Terminal circuit board; 24. Snap-fit ​​block; 25. Output terminal; 26. Abutment block; 30. First buffer assembly; 31. Support column; 32. Support sleeve; 33. First buffer spring; 40. Second buffer assembly; 41. Telescopic column; 42. Buffer sleeve; 43. Second buffer spring; 44. Slider; 45. Movable slide groove; 50. Output hole; 51. Dust cover; 52. Connecting strip; 60. Cover plate; 61. Transparent plate; 62. Slot; 63. LED circuit board; 70. Snap-fit ​​slide groove; 71. Strip structure; 72. Inclined guide surface. Detailed Implementation

[0029] 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.

[0030] In the description of this utility model, it should be noted that the terms "vertical direction," "up," "down," and "horizontal," 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, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] like Figures 1 to 9The diagram illustrates an embodiment of the present invention, relating to a charger resistant to external impacts. It includes a housing 10 and a main control circuit board 20 disposed inside the housing 10. The housing 10 includes an impact-resistant layer 11 and a reinforcing layer 12 disposed inside the impact-resistant layer 11. The housing 10 has an inner cavity 13 for accommodating the main control circuit board 20. A first abutment strip 14 is provided at the upper part of the inner cavity 13, and a second abutment strip 15 is provided below the first abutment strip 14 and fixed to the lower part of the inner cavity 13. A third abutment strip 16 is provided on one side of the second abutment strip 15. Each of the first abutment strip 14, the second abutment strip 15, and the third abutment strip 16 is provided with a rubber buffer strip 17. A first buffer assembly 30 and a second buffer assembly 40 are respectively provided on both sides of the main control circuit board 20. The upper part of the first buffer assembly 30 abuts against one side of the inner cavity 13, and the lower part of the second buffer assembly 40 abuts against the other side of the inner cavity 13.

[0033] Furthermore, the outer casing 10 adopts a composite structure design of an impact-resistant layer 11 and a reinforcing layer 12. The impact-resistant layer 11 can initially resist external impact forces, while the reinforcing layer 12 further enhances the overall structural strength and deformation resistance of the casing, forming the first protective barrier. The first abutment strip 1414, the first abutment strip 14, the second abutment strip 15, and the third abutment strip 16 provided in the inner cavity 13, together with the rubber buffer strip 17, can physically restrict the displacement of internal components such as the main control circuit board 20 and the output terminals 25, while using the elastic deformation of the rubber material to absorb impact energy and weaken the force of the impact transmitted inward. The first buffer assembly 30 and the second buffer assembly 40 on both sides of the main control circuit board 20, through the elastic structure design, can further absorb residual impact energy through the sliding and spring deformation inside the assembly when an impact occurs, preventing the main control circuit board 20 from experiencing severe vibration or hard collision due to impact, thus providing all-round protection for the internal core circuit components.

[0034] Furthermore, an output hole 50 is provided on one side of the outer casing 10. Two dust covers 51 are provided, connected together by a connecting strip 52. Specifically, the dust covers 51 at the output hole 50 effectively prevent dust, moisture, and foreign objects from entering the charger, preventing oxidation, short circuits, or poor contact at the output terminals 25 due to contaminant accumulation, thus extending the charger's lifespan. The design of connecting the two dust covers 51 together via the connecting strip 52 ensures the synchronous opening and closing of the dust covers 51 and prevents the loss of a single dust cover 51, improving user convenience and experience.

[0035] Furthermore, the outer casing 10 is connected to a cover plate 60 and a transparent plate 61; the cover plate 60 has a slot 62, and the slot 62 is connected to an LED circuit board 63; the transparent plate 61 is embedded in the cover plate 60, and the transparent plate 61 is used to transmit the display light emitted by the LED circuit board to achieve the visualization of information. Specifically, by transmitting the display light of the LED circuit board through the transparent plate 61, users can intuitively obtain the working status of the charger, such as charging in progress or fully charged, improving the convenience of human-computer interaction; the transparent plate 61 embedded in the cover plate 60 can not only prevent dust, moisture and other foreign objects from contacting the LED circuit board, preventing component damage or short circuit; at the same time, the LED circuit board is snapped onto one side of the terminal circuit board 23 to ensure that the display module is installed firmly, and maintain the fixed position of each component during daily use or when subjected to vibration or impact, ensuring the long-term reliability of the display function.

[0036] Furthermore, the impact-resistant layer 11 is a PC / ABS alloy plastic layer, and the reinforcing layer 12 is a carbon fiber resin composite layer. Specifically, the impact-resistant layer 11 is made of PC / ABS alloy plastic, which has good toughness, impact resistance, and processing performance, and can absorb energy through its own deformation when impacted; the reinforcing layer 12 is made of carbon fiber resin composite, whose lightweight and high-strength characteristics can further enhance the shell's bending and compression resistance, so that the shell can still have excellent impact resistance while being thin and light, and can easily cope with complex usage scenarios such as drops and collisions; the impact-resistant layer 11 and the reinforcing layer 12 can be combined through co-injection molding, lamination-molding composite process, structural adhesive composite, etc.

[0037] Furthermore, the first abutment strip 14 and the second abutment strip 15 abut against one side of the main control circuit board 20, and the third abutment strip 16 abuts against one side of the output terminal 25. Specifically, the abutment strips 14 and 15 abut against one side of the main control circuit board 20, which can limit the displacement of the main control circuit board 20 and, together with the rubber buffer strip 17, absorb impact energy; the third abutment strip 16 abuts against one side of the output terminal 25, specifically protecting the output terminal 25 and preventing it from shifting or being damaged under impact. This partitioned abutment buffer design achieves precise protection for different components, improving the targeting and effectiveness of the overall impact protection system.

[0038] Furthermore, the main control circuit board 20 extends outward with two metal pins 21, which protrude from the housing 10 and are used to connect to an external power source. Specifically, the metal pins 21 extending from the main control circuit board 20 pass through the housing 10 and are used to connect to an external power source. This structural design ensures stable power transmission while, through a secure fit with the housing 10, ensuring that the metal pins 21 will not loosen, deform, or detach under impact, thus maintaining the reliability of the power input and preventing circuit interruptions or poor contact caused by pin displacement.

[0039] Furthermore, the upper surface of the main control circuit board 20 is provided with electronic components 22, and a terminal circuit board 23 is provided on one side of the electronic components 22. The terminal circuit board 23 is connected to the main control circuit board 20 through several snap-fit ​​blocks 24. Specifically, this connection method not only achieves a stable electrical connection between the two, but also enhances the fixing strength of the terminal circuit board 23 through the mechanical snap-fit ​​structure. When subjected to impact, the snap-fit ​​blocks 24 can restrict the displacement of the terminal circuit board 23, prevent it from detaching from the main control circuit board 20, ensure the continuity of signal and power transmission, and avoid line contact failures caused by impact; the electronic components 22 include cylindrical capacitors, transformers, and other components.

[0040] Furthermore, the terminal circuit board 23 is connected to an output terminal 25, which communicates with an output hole 50 and is used to connect electrical equipment. Specifically, the output terminal 25 connected to the terminal circuit board 23 communicates with the output hole 50, and the reasonable layout design facilitates the connection of electrical equipment by the user. At the same time, combined with the dust cover 51, the output terminal 25 can be protected when not in use, preventing physical damage to the output terminal 25 caused by external impacts, as well as functional failures caused by dust and moisture intrusion, ensuring the long-term stability and safety of the output interface.

[0041] Furthermore, a snap-fit ​​groove 70 is slidably provided on one side of the terminal circuit board 23. The snap-fit ​​groove 70 consists of two strip-shaped structures 71, and one side of the lower strip-shaped structure 71 is provided with an inclined guide surface 72 to guide the terminal circuit board 23 to slide into the installation. An abutment block 26 is provided on the rear side of the terminal circuit board 23. After the terminal circuit board 23 is installed in place, its back abuts against the abutment block 26 to limit the displacement of the terminal circuit board 23 within the housing. Specifically, the snap-fit ​​groove 70 on one side of the terminal circuit board 23 adopts a double strip-shaped structure 71, and the lower strip-shaped structure 71 is provided with an inclined guide surface 72. This design greatly reduces the installation difficulty of the terminal circuit board 23 and guides it to be positioned quickly and accurately. After installation, the rear abutment block 26 abuts against the back of the terminal circuit board 23, which can limit the front and rear displacement of the terminal circuit board 23 when an impact occurs, preventing it from shaking inside the housing due to the impact, thereby protecting the components and solder joints on the terminal circuit board 23 and preventing breakage or poor contact caused by displacement; in some embodiments, the snap-fit ​​groove 70 and the two strip structures 71 are provided with elastic buffer layers to reduce the impact force on the terminal circuit board 23 when it is subjected to impact.

[0042] Further, the first buffer assembly 30 includes a support column 31, a support sleeve 32, and a first buffer spring 33; the top end of the support column 31 is connected to one side of the inner cavity 13; the support sleeve 32 is slidably engaged with the support column 31; the two ends of the first buffer spring 33 are respectively connected to the support column 31 and the support sleeve 32, and are used to provide elastic buffering force when the support column 31 slides relative to the support sleeve 32; there are multiple second buffer assemblies 40, each of which includes a telescopic column 41, a buffer sleeve 42, and a second buffer spring 43; the top end of the telescopic column 41 is connected to the main control circuit board 20, and the bottom end of the telescopic column 41 extends to form a slider 44; the buffer sleeve 42 is slidably engaged with the telescopic column 41, and both sides of the inner wall of the buffer sleeve 42 are provided with movable grooves 45 that are adapted to the sliding of the slider 44; the two ends of the second buffer spring 43 are respectively connected to the telescopic column 41 and the buffer sleeve 42, and are used to provide elastic buffering force when the telescopic column 41 slides relative to the buffer sleeve 42. Specifically, the first buffer assembly 30, through the cooperation of the support column 31, the support sleeve 32, and the first buffer spring 33, allows the support column 31 to slide relative to the support sleeve 32 during an impact, while the first buffer spring 33 compresses or extends, converting the impact energy into the elastic potential energy of the spring and reducing the direct impact on the main control circuit board 20. The second buffer assembly 40, with its telescopic column 41, buffer sleeve 42, and second buffer spring 43, provides cushioning for the main control circuit board 20 in the vertical direction through the sliding cooperation of the slider 44 and the movable groove 45, combined with the elastic deformation of the second buffer spring 43. These two sets of buffer assemblies absorb impact energy from different directions, forming a three-dimensional buffer protection that minimizes the impact on the main control circuit board 20 and protects the safety of the precision electronic components 22 on the circuit board.

[0043] This utility model constructs a three-dimensional protection system through multi-layered and multi-dimensional impact-resistant design, featuring a reinforced outer shell, shock absorption, and elastic absorption. First, the impact-resistant composite layer of the outer shell 10 structurally enhances overall strength, resisting external impacts. Second, the inner cavity 13's shock-absorbing structure, combined with the rubber buffer strip 17, weakens impact transmission through physical restriction and material buffering. Finally, the first buffer component 30 and the second buffer component 40 absorb remaining impact energy with an elastic mechanical structure, protecting the internal core circuitry. Simultaneously, details such as the dust cover 51 design and robust connection structure further enhance the charger's dustproof performance, connection reliability, and component stability. The synergistic effect of these multiple technical features enables the charger to effectively protect internal components from drops, collisions, and other external impacts, maintaining normal operation, extending service life, and meeting users' actual needs for high reliability and strong protection in chargers.

[0044] The above description merely illustrates the preferred technical solution of this utility model, and while the description is relatively specific and detailed, it should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and this utility model also intends to include these modifications and variations.

Claims

1. An external impact resistant charger comprising an outer housing, a master control circuit board disposed inside the outer housing, characterized in that, The outer casing includes an impact-resistant layer and a reinforcing layer disposed inside the impact-resistant layer. The outer casing has an inner cavity for accommodating the main control circuit board. A first abutment strip is provided at the upper part of the inner cavity, a second abutment strip is provided below the first abutment strip and fixed to the lower part of the inner cavity, and a third abutment strip is provided on one side of the second abutment strip. The first abutment strip, the second abutment strip, and the third abutment strip are all provided with rubber buffer strips. A first buffer assembly and a second buffer assembly are respectively provided on both sides of the main control circuit board. The upper part of the first buffer assembly abuts against one side of the inner cavity, and the lower part of the second buffer assembly abuts against the other side of the inner cavity.

2. The shock-resistant charger according to claim 1, characterized by, An output hole is provided on one side of the outer casing. The output hole is covered with a dust cover. There are two dust covers, which are connected as one unit by a connecting strip.

3. The shock-resistant charger of claim 1, wherein The outer casing is connected to a cover plate and a transparent plate; the cover plate has a slot, and the slot is connected to an LED circuit board; the transparent plate is embedded in the cover plate, and the transparent plate is used to transmit the display light emitted by the LED circuit board to realize the visualization display of information.

4. The shock-resistant charger of claim 1, wherein The impact-resistant layer is a PC / ABS alloy plastic layer, and the reinforcing layer is a carbon fiber resin composite layer.

5. The shock-resistant charger of claim 1, wherein The main control circuit board extends outward and has two metal pins that protrude from the outer casing. These metal pins are used to connect and cooperate with an external power source.

6. The charger resistant to external impact according to claim 1, characterized in that, The upper surface of the main control circuit board is provided with electronic components, and a terminal circuit board is provided on one side of the electronic components. The terminal circuit board is connected to the main control circuit board through several snap-fit ​​blocks.

7. The shock-resistant charger according to claim 6, characterized by The terminal circuit board is connected to an output terminal, which is connected to an output hole and is used to connect electrical equipment.

8. The shock-resistant charger of claim 6, wherein The terminal circuit board has a sliding engagement groove on one side, which consists of two strip structures. The lower strip structure has an inclined guide surface on one side to guide the terminal circuit board into the installation. The terminal circuit board has an abutment block on its rear side. After the terminal circuit board is installed in place, its back abuts against the abutment block to limit the displacement of the terminal circuit board within the housing.

9. The shock-resistant charger of claim 1, wherein The first and second abutting strips abut against one side of the main control circuit board, and the third abutting strip abuts against one side of the output terminal.

10. The shock-resistant charger of claim 1, wherein The first buffer assembly includes a support column, a support sleeve, and a first buffer spring; the top end of the support column is connected to one side of the inner cavity; the support sleeve is slidably fitted with the support column; the two ends of the first buffer spring are respectively connected to the support column and the support sleeve, and are used to provide elastic buffering force when the support column slides relative to the support sleeve; there are multiple second buffer assemblies, each of which includes a telescopic column, a buffer sleeve, and a second buffer spring; the top end of the telescopic column is connected to the main control circuit board, and the bottom end of the telescopic column extends to form a slider; the buffer sleeve is slidably fitted with the telescopic column, and both sides of the inner wall of the buffer sleeve are provided with movable grooves adapted to the sliding of the slider; the two ends of the second buffer spring are respectively connected to the telescopic column and the buffer sleeve, and are used to provide elastic buffering force when the telescopic column slides relative to the buffer sleeve.

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