Battery pack and circuit board card structure

Abstract

This application discloses a battery pack and circuit board locking structure, relating to the field of handheld vacuum cleaner technology. It includes a fixed frame for mounting the battery pack, with a connecting frame extending from the side wall of the fixed frame. A circuit board is mounted on top of the connecting frame. A fixing bracket for fixing the battery pack is provided within the fixed frame, and several insertion rods are provided on the top of the fixing bracket. The circuit board has fixing holes corresponding to the insertion rods. The connecting frame extending from the side wall of the fixed frame provides a stable mounting carrier for the circuit board, forming an integrated mounting structure between the battery pack and the circuit board, reducing the space occupied by both inside the device. The insertion rods on the top of the fixing bracket cooperate with the fixing holes of the circuit board, enabling precise alignment and installation of the circuit board and the fixing bracket, preventing misalignment during circuit board assembly, and facilitating easy assembly and disassembly of the circuit board.

Description

Technical Field

[0001] This application relates to the field of handheld vacuum cleaner technology, and in particular to the battery pack and circuit board locking structure. Background Technology

[0002] Handheld vacuum cleaners are widely used in homes, vehicles, and offices due to their flexibility, portability, and high cleaning efficiency. As consumers' demands for longer battery life, operational stability, and miniaturization continue to increase, the battery pack, as the core of the power supply, needs to continuously provide a stable power source for the device; the circuit board, as the control core, is responsible for battery management, motor control, and function switching. The connection structure between the two directly affects the device's power supply reliability, assembly efficiency, and overall lifespan, requiring high-precision and high-stability assembly within a limited internal space.

[0003] Currently, in handheld vacuum cleaners, the battery pack is fixed inside the body by a plastic bracket or metal clamp. The bracket has a basic positioning structure to prevent the battery pack from moving. The circuit board is fixed to a separate mounting base by screws. This mounting base is independent of the battery pack bracket and the two are distributed vertically or horizontally inside the body. The battery pack and the circuit board are electrically connected by multiple wires and terminal connectors.

[0004] Regarding the aforementioned technologies, the inventors believe that the circuit board assembly requires connecting it to the battery pack via wires, then precisely aligning the circuit board with the screw holes and fixing it with screws, which makes the circuit board assembly and disassembly operations difficult. Utility Model Content

[0005] The purpose of this application is to provide a battery pack and circuit board locking structure to improve the problem that the circuit board assembly requires connecting to the battery pack via wires, then precisely aligning the circuit board with screw holes and fixing it with screws, which makes the circuit board assembly and disassembly difficult.

[0006] The battery pack and circuit board locking structure provided in this application adopts the following technical solution: The battery pack and circuit board engaging structure includes a fixed frame for mounting the battery pack, a connecting frame extending from the side wall of the fixed frame, a circuit board mounted above the connecting frame, a fixing bracket for fixing the battery pack inside the fixed frame, a plurality of plug-in rods on the top of the fixing bracket, and fixing holes corresponding to the plug-in rods on the circuit board.

[0007] By adopting the above technical solution, the connecting frame extending from the side wall of the fixed frame provides a stable mounting carrier for the circuit board, enabling the battery pack and the circuit board to form an integrated mounting structure, reducing the space occupied by both inside the equipment; the plug-in rod at the top of the fixed bracket cooperates with the fixing hole of the circuit board, which can realize the precise alignment and installation of the circuit board and the fixed bracket, prevent the circuit board from shifting during assembly, and make the circuit board easy to disassemble and assemble.

[0008] Optionally, the top of the fixed bracket is provided with a support frame that abuts against the circuit board, and the side wall of the support frame is provided with a plurality of electrical connection pieces that are electrically connected to the battery pack and correspond to the circuit board.

[0009] By adopting the above technical solution, the support frame that abuts against the top of the fixed bracket can provide support from below the circuit board, preventing the circuit board from bending and deforming due to its own weight or external vibration; the electrical connection piece set on the side wall of the support frame can directly realize the physical connection and current transmission between the battery pack and the circuit board without the need for additional wire connection, reducing wire clutter and lowering the risk of poor wire contact.

[0010] Optionally, the electrical connector has a bent portion at its top, which is located above the circuit board and bent to connect with the circuit board.

[0011] By adopting the above technical solution, the bent part at the top of the electrical connector is bent above the circuit board and soldered to the circuit board, which increases the contact area between the electrical connector and the circuit board, improves conductivity stability, reduces contact resistance, and reduces energy loss during current transmission.

[0012] Optionally, the connecting frame is provided with a limiting side plate on the side wall of the circuit board, and the inner side wall of the limiting side plate is provided with a support protrusion for supporting the circuit board.

[0013] By adopting the above technical solution, the limiting side plate located on the side wall of the circuit board on the connecting frame can limit and constrain the circuit board in the lateral direction, preventing the circuit board from swaying left and right during equipment operation or transportation, and ensuring the relative position stability of the circuit board and the battery pack; the support protrusion on the inner side wall of the limiting side plate can provide auxiliary support from the bottom of the circuit board, preventing uneven force caused by the circuit board relying only on local support, and further preventing the circuit board from deforming.

[0014] Optionally, the side wall of the limiting side plate near the circuit board is sloped.

[0015] By adopting the above technical solution, the side wall of the limiting side plate near the circuit board is set with an incline, which can play a guiding role in the circuit board assembly process, so that the circuit board can slide smoothly into the installation position between the limiting side plates along the incline, reducing the assembly difficulty and improving the production assembly efficiency.

[0016] Optionally, the connecting frame has a connecting slot corresponding to the electrical connector at the bottom of the circuit board.

[0017] By adopting the above technical solution, the connecting slot in the connecting frame corresponding to the electrical connector at the bottom of the circuit board can provide a dedicated clearance space for the electrical connector, preventing structural interference between the electrical connector and the connecting frame, ensuring that the electrical connector can extend normally to connect with other parts of the handheld vacuum cleaner, and ensuring the connectivity of the overall circuit of the device.

[0018] Optionally, the connecting frame is provided with a connecting post facing the circuit board, the circuit board is provided with a relief groove corresponding to the connecting post, and the circumferential sidewall of the connecting post is provided with a support rib to support the circuit board.

[0019] By adopting the above technical solution, the connecting post of the connecting frame facing the circuit board cooperates with the clearance groove of the circuit board to perform circumferential positioning of the circuit board, preventing the circuit board from rotating and shifting after installation, and further improving the alignment accuracy of the circuit board and the battery pack; the support ribs on the circumferential sidewall of the connecting post can provide support force to the circuit board from the connecting post, increase the number of support points of the circuit board, and make the circuit board more uniformly stressed.

[0020] Optionally, the height of the supporting stiffener is consistent with the height of the supporting protrusion and the supporting frame.

[0021] By adopting the above technical solution, the height of the support rib plate is consistent with the height of the support protrusion and the support frame, which can ensure that the circuit board is on the same horizontal plane after installation and prevent the circuit board from tilting due to the height difference of different support points.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. The connecting frame extending from the side wall of the fixed frame provides a stable mounting carrier for the circuit board, making the battery pack and the circuit board an integrated mounting structure, reducing the space occupied by both inside the equipment; the plug-in rod on the top of the fixed bracket cooperates with the fixing hole of the circuit board to achieve precise alignment and installation of the circuit board and the fixed bracket, preventing the circuit board from shifting during assembly and making the circuit board easy to install and remove. 2. The support frame that abuts against the top of the fixed bracket can provide support from below the circuit board, preventing the circuit board from bending or deforming due to its own weight or external vibration; the electrical connection piece set on the side wall of the support frame can directly realize the physical connection and current transmission between the battery pack and the circuit board without the need for additional wire connection, reducing wiring clutter and lowering the risk of poor wiring contact. 3. The limiting side plate on the side wall of the circuit board on the connecting frame can limit and constrain the circuit board in the lateral direction to prevent the circuit board from swaying left and right during equipment operation or transportation, and ensure the relative position stability of the circuit board and the battery pack; the support protrusion on the inner side wall of the limiting side plate can provide auxiliary support from the bottom of the circuit board to prevent uneven force caused by the circuit board relying only on local support, and further prevent the circuit board from deforming. Attached Figure Description

[0023] Figure 1 This is an overall schematic diagram of the battery pack and circuit board interlocking structure; Figure 2 This is a partial schematic diagram of the connecting frame part in the battery pack and circuit board locking structure.

[0024] In the diagram, 1. Fixed frame; 2. Battery pack; 3. Connecting frame; 31. Limiting side plate; 32. Support protrusion; 33. Connecting slot; 34. Connecting column; 341. Supporting rib; 4. Circuit board; 41. Fixing hole; 42. Electrical connector; 43. Clearance slot; 5. Fixed bracket; 51. Insert rod; 52. Support frame; 53. Electrical connector piece; 531. Bending part. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1 -Appendix Figure 2 This application will be described in further detail below.

[0026] Battery pack and circuit board locking structure, refer to Figure 1 and Figure 2 It includes a fixed frame 1 for mounting the battery pack 2, one side wall of the fixed frame 1 extends horizontally to form a connecting frame 3, the connecting frame 3 and the fixed frame 1 are integrally molded structures made of plastic; the top of the connecting frame 3 is used to mount the circuit board 4, the size of the circuit board 4 is adapted to the top surface size of the connecting frame 3.

[0027] Reference Figure 1 and Figure 2 The fixed frame 1 is equipped with a fixed bracket 5 for fixing the battery pack 2. The fixed bracket 5 includes two clamping plates (not shown in the figure) arranged opposite to each other, which can clamp and fix the battery pack 2 therein. Several plug-in rods 51 are arranged on the top of the fixed bracket 5 extending vertically upward. The plug-in rods 51 are evenly distributed at the four corners and the middle of the top of the fixed bracket 5. Correspondingly, the circuit board 4 is provided with fixing holes 41 that correspond one-to-one with the plug-in rods 51. The plug-in rods 51 can be inserted into the fixing holes 41 to achieve the initial positioning of the circuit board 4 and the fixed bracket 5.

[0028] Reference Figure 1 and Figure 2 A support frame 52 is also provided on the top of the fixed bracket 5. The support frame 52 is located between adjacent plug-in rods 51. The top of the support frame 52 abuts against the bottom surface of the circuit board 4. The height of the support frame 52 is the same as the height of the plug-in rods 51 to ensure that the circuit board 4 remains horizontal after installation. Several electrical connecting pieces 53 are provided vertically on the side wall of the support frame 52. One end of the electrical connecting piece 53 is fixedly connected to the electrode of the battery pack 2 by welding, and the other end is set towards the circuit board 4. The position of the electrical connecting piece 53 corresponds to the connection contact point on the circuit board 4.

[0029] Reference Figure 1 and Figure 2 The top of the electrical connector 53 is provided with a bending part 531, which bends towards the circuit board 4 at a bending angle of 90 degrees. When the circuit board 4 is installed in place, the bottom surface of the bending part 531 fits against the connection point on the circuit board 4, and a fixed connection is achieved by welding or pressing. The connecting frame 3 is provided with limiting side plates 31 on both sides of the circuit board 4. The limiting side plates 31 are perpendicular to the top surface of the connecting frame 3, and the distance between the two limiting side plates 31 is adapted to the width of the circuit board 4, which can restrict the displacement of the circuit board 4 from both sides.

[0030] Reference Figure 1 and Figure 2 The inner wall of the limiting side plate 31 protrudes outward in the horizontal direction to form a support protrusion 32. The top surface of the support protrusion 32 is flush with the top surface of the support frame 52, and can be supported from the bottom of both sides of the circuit board 4. The side wall of the limiting side plate 31 near the circuit board 4 is set with an incline. The incline slopes from the top of the limiting side plate 31 inward, and the inclination angle of the incline is 15 degrees, which facilitates the sliding of the circuit board 4.

[0031] Reference Figure 1 and Figure 2 A connecting slot 33 is provided in the middle of the connecting frame 3. The position of the connecting slot 33 corresponds to the electrical connector 42 at the bottom of the circuit board 4. The electrical connector 42 can extend through the connecting slot 33 to the bottom of the connecting frame 3. A connecting post 34 is also provided on the side of the connecting frame 3 facing the circuit board 4. The connecting post 34 is arranged vertically and located at the edge of the connecting frame 3. Correspondingly, a relief groove 43 is provided on the circuit board 4, which corresponds to the connecting post 34. The connecting post 34 can be inserted into the relief groove 43. A support rib 341 extends radially outward on the circumferential side wall of the connecting post 34. The top surface of the support rib 341 is flush with the top surface of the support protrusion 32, which can support the circuit board 4 from the connecting post 34.

[0032] The implementation principle of this application embodiment is as follows: The battery pack 2 is installed in the fixed bracket 5 inside the fixed frame 1. Then, the circuit board 4 is placed on top of the connecting frame 3. During placement, the circuit board 4 slides along the inclined surface of the limiting side plate 31 between the two limiting side plates 31. At this time, the connecting post 34 on the connecting frame 3 is inserted into the relief groove 43 of the circuit board 4, and at the same time, the plug rod 51 at the top of the fixed bracket 5 is inserted into the fixing hole 41 of the circuit board 4. The circuit board 4 moves downward under the action of gravity until the bottom surface of the circuit board 4 abuts against the top surface of the support frame 52, the top surface of the support protrusion 32, and the top surface of the support rib 341. At this time, the circuit board 4 remains horizontal. Then, the bent part 531 at the top of the electrical connecting piece 53 is bent towards the circuit board 4 so that the bent part 531 fits with the contact point on the circuit board 4 and is fixed by welding to realize the electrical connection between the battery pack 2 and the circuit board 4. The electrical connector 42 at the bottom of the circuit board 4 extends through the connecting slot 33 on the connecting frame 3 and can be connected to other functional modules of the handheld vacuum cleaner to realize the overall circuit connection. The plug rod 51 at the top of the fixed bracket 5 cooperates with the fixing hole 41 of the circuit board 4 to achieve precise alignment and installation of the circuit board 4 and the fixed bracket 5, preventing the circuit board 4 from shifting during assembly and making the circuit board 4 easy to install and remove.

[0033] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A battery pack and circuit board locking structure, characterized in that: The device includes a fixed frame (1) for mounting the battery pack (2), a connecting frame (3) extending from the side wall of the fixed frame (1), a circuit board (4) mounted on the top of the connecting frame (3), a fixed bracket (5) for fixing the battery pack (2) inside the fixed frame (1), a plurality of plug-in rods (51) on the top of the fixed bracket (5), and a fixing hole (41) corresponding to the plug-in rod (51) on the circuit board (4).

2. The battery pack and circuit board engaging structure according to claim 1, characterized in that: The top of the fixed bracket (5) is provided with a support frame (52) that abuts against the circuit board (4), and the side wall of the support frame (52) is provided with a plurality of electrical connection pieces (53) that are electrically connected to the battery pack (2) and correspond to the circuit board (4).

3. The battery pack and circuit board engaging structure according to claim 2, characterized in that: The electrical connector (53) has a bend (531) at its top, and the bend (531) is located above the circuit board (4) and bends to connect with the circuit board (4).

4. The battery pack and circuit board engaging structure according to claim 3, characterized in that: The connecting frame (3) is provided with a limiting side plate (31) on the side wall of the circuit board (4), and the inner side wall of the limiting side plate (31) is provided with a supporting protrusion (32) for supporting the circuit board (4).

5. The battery pack and circuit board engaging structure according to claim 4, characterized in that: The limiting side plate (31) is inclined near the side wall of the circuit board (4).

6. The battery pack and circuit board engaging structure according to claim 5, characterized in that: The connecting frame (3) has a connecting slot (33) corresponding to the electrical connector (42) at the bottom of the circuit board (4).

7. The battery pack and circuit board engaging structure according to claim 6, characterized in that: The connecting frame (3) is provided with a connecting post (34) facing the circuit board (4), the circuit board (4) is provided with a relief groove (43) corresponding to the connecting post (34), and the circumferential sidewall of the connecting post (34) is provided with a support rib (341) to support the circuit board (4).

8. The battery pack and circuit board engaging structure according to claim 7, characterized in that: The height of the supporting rib plate (341) is the same as the height of the supporting protrusion (32) and the supporting frame (52).

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