Building block type power unit
By using the inclined design of the plastic snap-fit connector and the fixed base, along with the limiting components, and combining the transmission plate and spring mechanism, the cover plate of the building block power unit can be quickly disassembled and locked by hand, solving the problem of cumbersome operation in the existing technology and improving maintenance efficiency and user experience.
Patent Information
- Application Number
- CN202522718526.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-23
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-12-23
AI Technical Summary
The existing modular power unit requires special tools to remove screws during maintenance, which is cumbersome and difficult for ordinary users to complete independently, thus affecting the user experience.
The cover plate is designed with a plastic snap-fit connector and a beveled base. Combined with the cooperation of the limiting component and the limiting base, the elastic telescopic mechanism of the transmission plate and spring enables the cover plate to be opened and closed quickly by hand and locked without the need for tools.
Users can open, close, and lock the cover in seconds without tools, improving maintenance efficiency, lowering the operating threshold, and ensuring a smooth assembly experience and reliable locking.
Smart Images

Figure CN223930681U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of power technology for building block toys, specifically a building block-type power unit. Background Technology
[0002] Modular power units are power systems built under the standard modular design concept. The core idea is to design different functional subsystems of the power unit as standardized, quick-disassembly and assembly independent modules, like building blocks, and integrate them through standardized mechanical and electrical interfaces. Modular power units are commonly found in educational toys, robot models or small mechanical equipment.
[0003] When performing internal maintenance on existing modular power units, special tools are required to remove and install multiple screws. This process is lengthy, cumbersome, and difficult for ordinary users to complete independently, thus affecting the user experience. Utility Model Content
[0004] The purpose of this invention is to provide a modular power unit to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a modular power unit, comprising a power box, a cover plate, and a power switch. The top of the inner wall of the power box is connected to the cover plate, and the power switch is slidably connected to the middle of the top of the cover plate. A charging port is provided on one side of the top of the cover plate, and an output interface is embedded on the other side of the top of the cover plate. A connector is connected to the outer wall of the output interface, and a wire is fixedly connected to the middle of the outer wall of the connector. An electric motor is installed on one side of the outer wall of the wire. A plastic snap-fit is fixedly connected to one side of the bottom of the cover plate, and a limiting member is fixedly connected to the other side of the bottom of the cover plate. A limiting seat is fixedly connected to one side of the top of the inner wall of the power box, and a fixing seat is connected to the other side of the top of the inner wall of the power box.
[0006] The limiting member can be inserted into the limiting seat to restrict the cover plate; the bottom end of the plastic snap-fit member cooperates with the fixing seat to lock the cover plate.
[0007] With the help of components such as the transmission plate, plastic clips and fixing base, users can open and close the cover by hand in seconds without any tools, which greatly improves maintenance efficiency.
[0008] Preferably, the plastic snap-fit component has an "L" shaped structure, and the bottom end of the plastic snap-fit component and the top end of the fixing seat are provided with matching inclined surfaces. The plastic snap-fit component and the limiting component are symmetrically distributed about the transverse midline of the cover plate.
[0009] The lower cover moves the plastic snap-fit connector and the limiting component until the limiting component is inserted into the limiting seat, thus restricting the cover. Since the bottom end of the plastic snap-fit connector and the top side of the fixed seat have matching inclined surfaces, the bottom end of the plastic snap-fit connector will deform to a certain extent when it contacts the fixed seat. As the cover moves down, the bottom end of the plastic snap-fit connector moves to below the fixed seat, and the plastic snap-fit connector will return to its original position. At this time, the plastic snap-fit connector and the fixed seat are engaged and locked.
[0010] Preferably, a base is provided below the fixing seat, and a spring is fixedly connected to one side of the bottom end of the base, and crossbars are fixedly connected to both sides of the top end of the base, and the crossbars are slidably connected to the power box.
[0011] The crossbar drives the base to squeeze the plastic clip, causing the plastic clip to deform until the bottom of the plastic clip moves away from under the fixed seat, thereby releasing the lock on the cover plate. At this time, the user moves the cover plate up, causing the limiting part to disengage from the limiting seat, and the cover plate can be removed.
[0012] Preferably, one side of the outer wall of the spring is fixedly connected to the inner wall of the power supply box, and the base, spring and crossbar form an elastic telescopic mechanism, with the base and crossbar having a "U" shaped structure.
[0013] The movement of the base stretches the spring, causing it to deform, and then the spring resets to help the base return to its original position.
[0014] Preferably, a transmission plate is fixedly connected to one side of the outer wall of the crossbar, and a slide plate is connected to the top of the outer wall of the transmission plate. Slide rails are slidably connected to both sides inside the slide plate, and the bottom of the outer wall of the slide rails is fixedly connected to the top of the power supply box. The transmission plate and the slide plate form an "L" shape.
[0015] By pressing the transmission plate close to the cover plate, the transmission plate moves, causing the crossbar and the slide to move together. At this time, the slide slides along the slide rail, guiding the transmission plate to move smoothly.
[0016] As can be seen from the above, the modular power unit provided by this utility model has the following beneficial effects.
[0017] With the help of components such as the transmission plate, plastic clips and fixing base, users can open and close the cover by hand in seconds without any tools, which greatly improves maintenance efficiency and lowers the operating threshold.
[0018] The cover plate is initially positioned by the cooperation of the limiting component and the limiting seat; the inclined guide design of the plastic snap-fit component and the fixed seat enables the entire process of compression, sliding in, and resetting and locking to be completed automatically when the cover plate is pressed down, achieving one-click locking, smooth assembly experience and reliable locking; and the cooperation of the slide plate and the slide rail ensures smooth linear movement of the opening action; the spring provides reliable reset force, enabling the mechanism to automatically return to its original position. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;
[0020] Figure 2 This is a top view of the three-dimensional structure of the cover plate of this utility model;
[0021] Figure 3 This is a schematic diagram of the main structure of the power supply box of this utility model;
[0022] Figure 4 This is a schematic diagram of the main view sectional structure of the power supply box of this utility model;
[0023] Figure 5 This is a bottom-view perspective view of the cover plate of this utility model.
[0024] Figure 6 This is a top-view perspective view of the power supply box of this utility model.
[0025] Figure 7 This is a schematic diagram of the main structure of the base of this utility model;
[0026] Figure 8 This is a schematic diagram of the front sectional view of the limiting seat of this utility model;
[0027] Figure 9 This is a schematic diagram of the three-dimensional structure of the base of this utility model.
[0028] In the diagram: 1. Power supply box; 2. Cover plate; 3. Power switch; 4. Charging port; 5. Output interface; 6. Connector; 7. Wire; 8. Electric motor; 9. Plastic snap-fit component; 10. Limiting component; 11. Limiting seat; 12. Base; 13. Spring; 14. Crossbar; 15. Transmission plate; 16. Slide plate; 17. Slide rail; 18. Fixing base. 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] Please see Figures 1-9This utility model provides a technical solution: a modular power unit, including a power box 1, a cover plate 2 and a power switch 3. The cover plate 2 is connected to the top of the inner wall of the power box 1, and the power switch 3 is slidably connected to the middle of the top of the cover plate 2. A charging port 4 is opened on one side of the top of the cover plate 2, and an output interface 5 is embedded on the other side of the top of the cover plate 2. A connector 6 is connected to the outer wall of the output interface 5, and a wire 7 is fixedly connected to the middle of the outer wall of the connector 6. An electric motor 8 is installed on one side of the outer wall of the wire 7. A plastic snap-fit 9 is fixedly connected to one side of the bottom of the cover plate 2, and a limiting member 10 is fixedly connected to the other side of the bottom of the cover plate 2. A limiting seat 11 is fixedly connected to one side of the top of the inner wall of the power box 1, and a fixing seat 18 is connected to the other side of the top of the inner wall of the power box 1.
[0031] The limiting member 10 can be inserted into the limiting seat 11 to limit the cover plate 2; the bottom end of the plastic snap-fit member 9 cooperates with the fixing seat 18 to lock the cover plate 2.
[0032] The plastic clip 9 has an "L" shaped structure, and the bottom end of the plastic clip 9 and the top side of the fixed base 18 are provided with matching inclined surfaces. The plastic clip 9 and the limiting member 10 are symmetrically distributed about the horizontal midline of the cover plate 2. A base 12 is provided below the fixed base 18, and a spring 13 is fixedly connected to one side of the bottom end of the base 12. A crossbar 14 is fixedly connected to both sides of the top end of the base 12. The crossbar 14 is slidably connected to the power box 1. One side of the outer wall of the spring 13 is fixedly connected to the inner wall of the power box 1. The base 12, the spring 13 and the crossbar 14 form an elastic telescopic mechanism. The base 12 and the crossbar 14 have a "U" shaped structure. A transmission plate 15 is fixedly connected to one side of the outer wall of the crossbar 14, and a slide plate 16 is connected to the top of the outer wall of the transmission plate 15. Slide rails 17 are slidably connected to both sides inside the slide plate 16, and the bottom end of the outer wall of the slide rail 17 is fixedly connected to the top of the power box 1. The transmission plate 15 and the slide plate 16 have an "L" shaped structure.
[0033] For specific implementation, please refer to Figure 1 and Figure 2 First, connect the power cord connector to the charging port 4 to charge the power box 1. After charging is complete, unplug the power cord connector and move the wire 7 so that its connector 6 connects to the output interface 5. Then, turn on the power switch 3. The power in the power box 1 is transmitted to the electric motor 8 through the wire 7, which drives the output end of the electric motor 8 to rotate, thereby providing power to the building block toy connected to it.
[0034] See Figure 4 and Figure 7When the circuit board on the top of the power box 1 needs maintenance, the user presses the transmission plate 15 to move it toward the cover plate 2. The transmission plate 15 drives the crossbar 14 and the slide plate 16 to move synchronously. The slide plate 16 slides along the slide rail 17 to ensure that the transmission plate 15 moves smoothly. The crossbar 14 then pushes the base 12, causing it to squeeze the plastic snap-fit 9 to deform elastically. At the same time, it stretches the spring 13 to store energy. Then, the spring 13 releases energy to assist the base 12 in resetting.
[0035] See Figure 5 and Figure 9 The above actions cause the bottom of the plastic clip 9 to detach from the base 18, releasing the lock on the cover 2. The user can lift the cover 2 upwards to disengage the limiting member 10 from the limiting base 11, and then remove the cover 2 to expose the components inside the top of the power box 1. This process does not require the use of tools to remove screws, enabling quick disassembly of the cover 2, facilitating internal maintenance, effectively saving time and improving work efficiency.
[0036] See Figure 6 and Figure 8 After maintenance, press down the cover plate 2, causing the plastic snap-fit part 9 and the limiting part 10 to move down together. When the limiting part 10 is inserted into the limiting seat 11, the cover plate 2 is initially limited. Since the bottom end of the plastic snap-fit part 9 and the corresponding side of the top end of the fixing seat 18 are designed with matching guide slopes, the bottom end of the plastic snap-fit part 9 will produce elastic deformation when it contacts the fixing seat 18 during the pressing process. As the cover plate 2 continues to move down, the bottom end of the plastic snap-fit part 9 slides into the bottom of the fixing seat 18 and quickly returns to its original shape, forming a snap-fit connection with the fixing seat 18, and finally locking the cover plate 2. Thus, the installation and locking of the cover plate 2 can be completed in one go by pressing down.
[0037] With the transmission plate 15, plastic clip 9 and fixing base 18, users can open and close the cover plate 2 by hand in a few seconds without any tools, which greatly improves maintenance efficiency and lowers the operating threshold.
[0038] The cooperation between the limiting component 10 and the limiting seat 11 achieves the initial positioning of the cover plate 2; the inclined guide design of the plastic snap-fit component 9 and the fixed seat 18 enables the cover plate 2 to automatically complete the entire process of compression, sliding in, and resetting when pressed down, achieving one-click locking, smooth assembly experience and reliable locking; and the cooperation between the slide plate 16 and the slide rail 17 ensures the smooth linear movement of the opening action; the spring 13 provides a reliable restoring force, enabling the mechanism to automatically return to its original position.
[0039] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.
Claims
1. A modular power unit, comprising a power supply box (1), a cover plate (2), and a power switch (3), wherein the cover plate (2) is connected to the top of the inner wall of the power supply box (1), and the power switch (3) is slidably connected to the middle of the top of the cover plate (2), characterized in that: A charging port (4) is provided on one side of the top of the cover plate (2), and an output interface (5) is embedded on the other side of the top of the cover plate (2). A connector (6) is connected to the outer wall of the output interface (5), and a wire (7) is fixedly connected to the middle of the outer wall of the connector (6). An electric motor (8) is installed on one side of the outer wall of the wire (7). A plastic snap-fit (9) is fixedly connected to one side of the bottom of the cover plate (2), and a limiting piece (10) is fixedly connected to the other side of the bottom of the cover plate (2). A limiting seat (11) is fixedly connected to one side of the top of the inner wall of the power box (1), and a fixing seat (18) is connected to the other side of the top of the inner wall of the power box (1). The limiting member (10) can be inserted into the limiting seat (11) to limit the cover plate (2); the bottom end of the plastic snap-fit member (9) cooperates with the fixing seat (18) to lock the cover plate (2).
2. The modular power unit according to claim 1, characterized in that: The plastic snap fastener (9) has an "L" shaped structure, and the bottom end of the plastic snap fastener (9) and the top end of the fixing seat (18) are provided with matching inclined surfaces. The plastic snap fastener (9) and the limiting member (10) are symmetrically distributed about the transverse midline of the cover plate (2).
3. The modular power unit according to claim 2, characterized in that: A base (12) is provided below the fixed seat (18), and a spring (13) is fixedly connected to one side of the bottom end of the base (12), and a crossbar (14) is fixedly connected to both sides of the top end of the base (12). The crossbar (14) is slidably connected to the power box (1).
4. The modular power unit according to claim 3, characterized in that: The outer wall of the spring (13) is fixedly connected to the inner wall of the power box (1). The base (12), the spring (13) and the crossbar (14) form an elastic telescopic mechanism. The base (12) and the crossbar (14) have a "U" shaped structure.
5. The modular power unit according to claim 4, characterized in that: A transmission plate (15) is fixedly connected to one side of the outer wall of the crossbar (14), and a slide plate (16) is connected to the top of the outer wall of the transmission plate (15). Slide rails (17) are slidably connected to both sides inside the slide plate (16), and the bottom of the outer wall of the slide rail (17) is fixedly connected to the top of the power box (1). The transmission plate (15) and the slide plate (16) form an "L" shape.