Wired power device for replacing power tool battery packs

Abstract

This utility model relates to the field of power tool technology, specifically a corded power supply device for replacing power tool battery packs. It includes a power tool body, a base mounted on the bottom of the body, a base box mounted on the bottom of the base, a power cord connected to one end of the base box, a plug mounted on the outer end of the power cord, a conductive plate installed inside the base, and a connector slot inside the base box. A clamping copper plate is installed in the connector slot, the conductive plate and the connector slot are engaged, and the clamping copper plate and the conductive plate are clamped together. This corded power supply device for replacing power tool battery packs significantly reduces the overall weight of the power tool and improves operating comfort. Compared to traditional battery packs, this corded power supply device eliminates the need for heavy battery cells, greatly reducing the load on the power tool. For heavy power tools such as those used in gardening, operator fatigue during prolonged use is significantly reduced, resulting in a significantly improved user experience.

Description

Technical Field

[0001] This utility model relates to the field of power tool technology, and more specifically, to a corded power supply device for replacing the battery pack of power tools. Background Technology

[0002] In the field of power tool technology, battery pack power supply is widely used. Typically, the battery pack is directly plugged into the power tool to provide the power it needs to operate. However, in practical use, this power supply method has many shortcomings. On the one hand, for some power tools that are already quite heavy, such as garden tools, the added weight of the battery pack can easily cause operator fatigue, severely impacting the user experience. On the other hand, the limited capacity of a single battery pack significantly restricts its discharge time. For example, in prolonged, high-intensity work scenarios, the battery pack often runs out of power quickly, requiring frequent charging or replacement, which not only reduces work efficiency but also increases operating costs. Furthermore, some battery packs can only power power tools on specific voltage platforms, resulting in poor versatility and low overall efficiency. Furthermore, the performance and quality of battery packs vary widely. Inferior battery packs not only affect the range of power tools but also negatively impact their power output. For example, some low-cost battery packs use cells with low discharge rates and low capacity, resulting in reduced peak power and insufficient power for the power tool. Moreover, inferior battery packs may have issues with overcharging and over-discharging without protective cycling, leading to capacity decay and severely shortening battery life. Utility Model Content

[0003] The purpose of this invention is to provide a corded power supply device to replace the battery pack of power tools, thereby solving the problem mentioned in the background art that for some power tools that are already heavy, such as garden tools, the added weight of the battery pack can easily cause operator fatigue during use, seriously affecting the user experience. On the other hand, the limited capacity of a single battery pack greatly restricts the discharge time.

[0004] To achieve the above objectives, this utility model provides a wired power supply device for replacing the battery pack of power tools, including a power tool body, a base mounted on the bottom of the power tool body, a base box mounted on the bottom of the base, a power cord connected to one end of the base box, a plug mounted on the outer end of the power cord, a conductive sheet mounted inside the base, and a insertion slot provided inside the base box. A clamping copper sheet is installed in the insertion slot, the conductive sheet is inserted into the insertion slot, and the clamping copper sheet is clamped to the conductive sheet.

[0005] This setup involves installing a base at the bottom of the power tool body, with a base box connected below the base. The power cord and plug extend from the base box, creating a power supply path from an external power source to the power tool. The conductive plates inside the base cooperate with the clamping copper plates in the socket slots of the base box to transmit current from the power cord through the base box to the power tool body.

[0006] Preferably, the conductive sheet is connected to the internal circuitry of the power tool body, the clamping copper sheet is connected to the circuit board inside the base box, and one end of the circuit board is connected to the power cord.

[0007] This feature connects the conductive plate to the internal circuitry of the power tool body, introducing external power into the internal circuitry of the power tool; the clamping copper plate connects to the circuit board inside the base box, and the circuit board is then connected to the power cord, forming a complete current path, ensuring that electrical energy travels from the plug through the power cord, circuit board, clamping copper plate, and conductive plate, and finally reaches the internal circuitry of the power tool body.

[0008] Preferably, the bottom box is provided with a snap-fit ​​component inside, and the base is snapped into the bottom box and fixed by the snap-fit ​​component.

[0009] This feature includes a locking mechanism inside the base box. When the base is inserted into the base box, the locking mechanism activates, firmly securing the base to the base box and preventing them from separating during use due to shaking, vibration, or other reasons.

[0010] Preferably, the buckle component includes a connecting plate, a pressing plate is installed at one end of the connecting plate, a locking block is installed at the other end of the connecting plate, and a locking groove is provided at the bottom of the base, with the locking block engaging with the locking groove.

[0011] This design incorporates a connecting plate in the snap-fit ​​component, with a pressing plate at one end and a locking block at the other. A locking groove is located at the bottom of the base. When the base is snapped into the base box, the locking block engages with the locking groove to secure it. When the operator presses the pressing plate, the connecting plate causes the locking block to disengage from the locking groove, thus releasing the locking mechanism.

[0012] Preferably, the side of the card block that is close to the base is sloped to facilitate the card block's insertion into the slot, and a spring is provided at the bottom of the connecting plate.

[0013] This design features a beveled side for the locking block near the base. As the base is inserted into the base box, the bevel acts as a guide, making it easier for the locking block to slide into the slot. The spring tab at the bottom of the connecting plate provides elastic support. Once the locking block is in the slot, the spring force ensures that the locking block and the slot are tightly engaged and not easily loosened.

[0014] Preferably, the clamping copper sheet has an arc-shaped protrusion in the middle.

[0015] This feature includes an arc-shaped protrusion in the center of the clamping copper sheet. When the conductive sheet is inserted into the insertion slot and engages with the clamping copper sheet, the arc-shaped protrusion can better fit the conductive sheet, increasing the contact area and contact pressure between the two.

[0016] Preferably, the top of the pressing plate is equipped with an anti-slip strip.

[0017] This feature includes an anti-slip strip installed on the top of the press plate. When the operator presses the press plate, the anti-slip strip increases the friction between the fingers and the press plate, allowing the operator to apply force more easily and stably.

[0018] Preferably, a base plate is installed at the bottom of the base box, and the circuit board is mounted on the base plate.

[0019] This feature includes a base plate mounted at the bottom of the box, on which the circuit board is mounted. The base plate provides a stable mounting platform for the circuit board, allowing it to be securely fixed inside the box.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows: (1) This corded power supply device, used to replace the battery pack of power tools, significantly reduces the overall weight of the power tools and improves operating comfort. Compared with traditional battery packs, this corded power supply device does not require heavy battery cells, greatly reducing the load on the power tools. For power tools such as garden tools that are inherently heavy, the operator's fatigue will be significantly reduced during long-term use, and the operating experience will be significantly improved. (2) Achieve continuous power supply and improve work efficiency. By connecting to an external power source via a power cord, this device can provide a continuous supply of power to power tools, completely eliminating the limitations of traditional battery packs. In long-term, high-intensity work scenarios, there is no need to frequently stop work to charge or replace the battery pack, effectively avoiding the decline in work efficiency caused by power outages and greatly improving work continuity. (3) Enhanced power supply stability and reliability, ensuring power tool performance. The conductive sheet inside the device fits tightly with the clamping copper sheet, and the arc-shaped protrusion in the middle of the clamping copper sheet further improves the tightness of the contact, ensuring stable current transmission. At the same time, through the reasonable design of the circuit board, the power supply can be effectively regulated, reducing the adverse effects of unstable power supply on the power of the power tool, and ensuring that the power tool is always in good working condition. In addition, compared with battery packs of varying quality, the power supply performance of this wired power supply device is more stable, and there are no problems such as reduced peak power and insufficient power common in inferior battery packs. (4) Improved ease and stability of connection. The base and the bottom box are quickly and securely fastened by a snap-fit ​​mechanism. The beveled design of the snap-fit ​​block near the base allows the base to easily snap into the bottom box. The spring clip ensures a tight fit between the snap-fit ​​block and the slot, effectively preventing the base and bottom box from loosening or detaching during use. At the same time, the anti-slip strip on the top of the pressing plate makes it easy for operators to press and release the device, improving the ease of assembly and disassembly. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the bottom box in this utility model; Figure 3 This is a schematic diagram of the bottom structure of the bottom box in this utility model; Figure 4 This is a schematic diagram of the base structure in this utility model; Figure 5 This is a schematic diagram of the buckle component in this utility model; Figure 6 This is a schematic diagram of the structure for holding the copper sheet in this utility model; The meanings of the labels in the diagram are as follows: 1. Power tool body; 2. Base; 21. Conductive sheet; 22. Slot; 3. Base box; 31. Buckle component; 311. Connecting plate; 312. Pressing plate; 313. Anti-slip strip; 314. Locking block; 315. Spring; 32. Plug slot; 321. Clamping copper sheet; 3211. Protrusion; 33. Circuit board; 34. Base plate; 4. Power cord; 41. Plug. Detailed Implementation

[0022] 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.

[0023] This utility model provides a wired power supply device for replacing the battery pack of power tools, such as... Figure 1 , Figure 2 , Figure 3As shown, the device includes a power tool body 1, a base 2 mounted on the bottom of the power tool body 1, a base box 3 mounted on the bottom of the base 2, a power cord 4 connected to one end of the base box 3, a plug 41 mounted on the outer end of the power cord 4, a conductive sheet 21 mounted inside the base 2, and a plug slot 32 provided inside the base box 3. A clamping copper sheet 321 is installed in the plug slot 32, and the conductive sheet 21 is plugged into the plug slot 32, and the clamping copper sheet 321 is clamped into the conductive sheet 21.

[0024] By installing a base 2 at the bottom of the power tool body 1, and connecting a base box 3 below the base 2, a power supply path from an external power source to the power tool is established through the base box 3, with a power cord 4 and a plug 41 extending from the base box 3. The conductive plate 21 inside the base 2 cooperates with the clamping copper plate 321 in the insertion slot 32 of the base box 3 to transmit current from the power cord 4 through the base box 3 to the power tool body 1. This provides a completely new power supply structure to replace the battery pack, allowing the power tool to break free from the limitations of battery pack power supply and instead utilize an external power source, laying the foundation for subsequent technical improvements and functional implementation.

[0025] In this embodiment, the conductive sheet 21 is connected to the internal circuit of the power tool body 1, the clamping copper sheet 321 is connected to the circuit board 33 inside the bottom box 3, and one end of the circuit board 33 is connected to the power line 4.

[0026] The conductive plate 21 connects to the internal circuitry of the power tool body 1, introducing external power into the internal circuitry. The clamping copper plate 321 connects to the circuit board 33 inside the base box 3, and the circuit board 33 is then connected to the power cord 4, forming a complete current path. This ensures that electrical energy travels from the plug 41 through the power cord 4, circuit board 33, clamping copper plate 321, and conductive plate 21, ultimately reaching the internal circuitry of the power tool body 1. This clarifies the electrical connections between the components, ensuring the accuracy and stability of current transmission, enabling the power tool to operate stably, and providing a reliable power supply for its normal operation.

[0027] Specifically, such as Figure 2 As shown, the bottom box 3 has a snap-fit ​​component 31 inside, and the base 2 is snapped into the bottom box 3 and then secured by the snap-fit ​​component 31.

[0028] The base box 3 is equipped with a latching component 31. When the base 2 is inserted into the base box 3, the latching component 31 functions to firmly fix the base 2 to the base box 3, preventing them from separating due to shaking or vibration during use. This enhances the stability of the connection between the base 2 and the base box 3, making the entire wired power supply device more reliable during use. It avoids problems such as power outages or poor contact caused by loose connections, thus improving the overall stability and safety of the device.

[0029] Furthermore, such as Figure 4 , Figure 5As shown, the buckle component 31 includes a connecting plate 311, a pressing plate 312 is installed at one end of the connecting plate 311, a locking block 314 is installed at the other end of the connecting plate 311, and a locking groove 22 is provided at the bottom of the base 2, with the locking block 314 engaging with the locking groove 22.

[0030] The connecting plate 311 in the snap-fit ​​component 31 is connected to the pressing plate 312 at one end and a locking block 314 is installed at the other end. The bottom of the base 2 has a locking groove 22. When the base 2 is snapped into the bottom box 3, the locking block 314 engages with the locking groove 22 to achieve fixation. When the operator presses the pressing plate 312, the connecting plate 311 drives the locking block 314 to disengage from the locking groove 22, thereby releasing the fixation. This specific snap-fit ​​structure design makes the connection and separation of the base 2 and the bottom box 3 simple and convenient, improving the ease of use of the device. At the same time, the clear structural design facilitates manufacturing and subsequent maintenance, reducing product costs and maintenance difficulty.

[0031] Furthermore, such as Figure 5 As shown, the side of the card block 314 that is close to the base 2 is inclined, which makes it easy for the card block 314 to be inserted into the card slot 22. A spring piece 315 is provided at the bottom of the connecting plate 311.

[0032] The side of the locking block 314 closest to the base 2 is sloped. This slope guides the locking block 314 as it slides into the slot 22, making it easier for it to engage. The spring tab 315 at the bottom of the connecting plate 311 provides elastic support. Once the locking block 314 is engaged in the slot 22, the spring force of the spring tab 315 ensures a tight fit between the locking block 314 and the slot 22, preventing loosening. The sloped design reduces the difficulty of installing the base 2 and improves installation efficiency. The spring tab 315 enhances the stability of the engagement, further ensuring the reliability of the connection between the base 2 and the slot 3, and reducing the possibility of loosening due to vibration or other factors.

[0033] Furthermore, such as Figure 6 As shown, an arc-shaped protrusion 3211 is provided in the middle of the clamping copper sheet 321.

[0034] An arc-shaped protrusion 3211 is provided in the middle of the clamping copper sheet 321. When the conductive sheet 21 is inserted into the insertion slot 32 and mates with the clamping copper sheet 321, the arc-shaped protrusion 3211 can better fit the conductive sheet 21, increasing the contact area and contact pressure between the two. This improves the tightness of the contact between the conductive sheet 21 and the clamping copper sheet 321, thereby enhancing the stability and reliability of current transmission, reducing problems such as increased resistance and overheating caused by poor contact, and ensuring that the power tool can stably obtain sufficient electrical energy.

[0035] Furthermore, such as Figure 5 As shown, an anti-slip strip 313 is installed on the top of the pressing plate 312.

[0036] The top of the pressing plate 312 is equipped with an anti-slip strip 313. When the operator presses the pressing plate 312, the anti-slip strip 313 increases the friction between the fingers and the pressing plate 312, allowing the operator to apply force more easily and stably. This improves the convenience and comfort of operation, making it easier for the operator to press the pressing plate 312 quickly and accurately, achieving the separation of the base 2 and the bottom box 3, and enhancing the user experience of the device.

[0037] Furthermore, such as Figure 3 As shown, a base plate 34 is installed at the bottom of the base box 3, and a circuit board 33 is installed on the base plate 34.

[0038] A base plate 34 is installed at the bottom of the base box 3, and the circuit board 33 is mounted on the base plate 34. The base plate 34 provides a stable mounting platform for the circuit board 33, allowing the circuit board 33 to be firmly fixed inside the base box 3. The optimized internal structural layout of the base box 3 makes the installation of the circuit board 33 more secure, which helps protect the circuit board 33 from external vibrations, collisions and other factors. It also facilitates the later inspection and maintenance of the circuit board 33, improving the maintainability of the device.

[0039] When using the corded power supply device of this utility model, which is used to replace the battery pack of power tools, the operator first aligns the base 2 at the bottom of the power tool body 1 with the opening of the base box 3 and slowly inserts it downwards. During the insertion process, the bottom of the base 2 will contact the inclined surface of the locking block 314 in the locking component 31. As the base 2 continues to be pressed down, the inclined surface guides the locking block 314 to move to one side, and the spring piece 315 at the bottom of the connecting plate 311 is compressed. When the base 2 is fully inserted into the base box 3, the locking block 314 is reset under the elastic force of the spring piece 315 and locks into the slot 22 at the bottom of the base 2, thus firmly fixing the base 2 to the base box 3. At the same time, the conductive sheet 21 inside the base 2 is inserted into the insertion slot 32 of the base box 3 and contacts the clamping copper sheet 321 in the insertion slot 32. The arc-shaped protrusion 3211 in the middle of the clamping copper sheet 321 will tightly fit the conductive sheet 21, ensuring good electrical contact.

[0040] After installation, the operator inserts the plug 41 at the outer end of the power cord 4 into an external power socket. At this time, the current is transmitted through the power cord 4 to the circuit board 33 inside the base box 3. The circuit board 33 rectifies and regulates the input mains power, converting it into voltage and current suitable for the operation of the power tool body 1. The current processed by circuit board 33 is transmitted to the clamping copper plate 321 that is connected to circuit board 33. Since the clamping copper plate 321 is tightly clamped to the conductive plate 21, the current is conducted to the conductive plate 21 through the contact point between the two. The conductive plate 21 is connected to the internal circuit of the power tool body 1, and the current finally enters the circuit system of the power tool body 1 to power the motor and other components of the power tool, enabling the power tool to start and run normally. When it is necessary to stop using or replace the power tool, the operator presses the anti-slip strip 313 on the top of the press plate 312 with their finger. The anti-slip strip 313 increases the friction and makes it easier to apply force. The press plate 312 drives the connecting plate 311 to rotate, causing the locking block 314 to disengage from the locking groove 22 of the base 2, and the spring piece 315 returns to its original position. At this point, the operator can easily remove the base 2 from the base box 3, the conductive sheet 21 separates from the clamping copper sheet 321, the current transmission is interrupted, and the power tool stops working. Then, unplug the plug 41 to complete the power-off operation of the entire device.

[0041] Finally, it should be noted that the electronic components in the circuit board 33 and other components in this embodiment are all general standard parts or parts known to those skilled in the art. Their structure and principle can be known to those skilled in the art through technical manuals or conventional experimental methods. In the idle space of this device, all the above-mentioned electrical components are connected by wires. The specific connection method should refer to the working order of each electrical component in the above working principle to complete the electrical connection. All of these are technologies known in the art.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A corded power supply device for replacing the battery pack of a power tool, comprising the power tool body (1), characterized in that: The power tool body (1) has a base (2) installed at the bottom, and a base box (3) installed at the bottom of the base (2). One end of the base box (3) is connected to a power cord (4), and a plug (41) is installed at the outer end of the power cord (4). A conductive sheet (21) is installed inside the base (2), and a plug slot (32) is provided inside the base box (3). A clamping copper sheet (321) is installed in the plug slot (32). The conductive sheet (21) is plugged into the plug slot (32), and the clamping copper sheet (321) is clamped to the conductive sheet (21).

2. The corded power supply device for replacing power tool battery packs according to claim 1, characterized in that: The conductive sheet (21) is connected to the internal circuit of the power tool body (1), the clamping copper sheet (321) is connected to the internal circuit board (33) of the bottom box (3), and one end of the circuit board (33) is connected to the power cord (4).

3. The corded power supply device for replacing power tool battery packs according to claim 1, characterized in that: The bottom box (3) is provided with a buckle component (31) inside. After the base (2) is inserted into the bottom box (3), it is locked and fixed by the buckle component (31).

4. The corded power supply device for replacing power tool battery packs according to claim 3, characterized in that: The buckle component (31) includes a connecting plate (311), a pressing plate (312) is installed at one end of the connecting plate (311), a locking block (314) is installed at the other end of the connecting plate (311), and a locking groove (22) is provided at the bottom of the base (2), and the locking block (314) engages with the locking groove (22).

5. The corded power supply device for replacing power tool battery packs according to claim 4, characterized in that: The side of the card block (314) that is close to the base (2) is inclined, which makes it easy for the card block (314) to be inserted into the card slot (22). The bottom of the connecting plate (311) is provided with a spring piece (315).

6. The corded power supply device for replacing power tool battery packs according to claim 1, characterized in that: The clamping copper sheet (321) has an arc-shaped protrusion (3211) in the middle.

7. The corded power supply device for replacing power tool battery packs according to claim 4, characterized in that: The top of the pressing plate (312) is fitted with an anti-slip strip (313).

8. The corded power supply device for replacing power tool battery packs according to claim 2, characterized in that: The bottom of the bottom box (3) is fitted with a base plate (34), and the circuit board (33) is mounted on the base plate (34).

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