Self-resetting sliding contact type change-over switch applied to dual-mode power supply

Abstract

The utility model relates to a self-resetting sliding contact type change-over switch applied to dual-mode power supply, which utilizes a connecting rod matched with a battery pack and a spring to drive a sliding block to slide in two states of assembling the battery pack and disassembling the battery pack so as to replace different power supply circuits, thereby avoiding the technical problem of simultaneous power supply of the battery pack and commercial power. Technical support is provided for power supply of the electric tool through two modes of the battery pack and the mains supply, so that the use performance of the electric tool is improved.

Description

Technical Field

[0001] This utility model belongs to the field of switch technology, specifically relating to a self-resetting sliding contact switch for dual-mode power supply. Background Technology

[0002] With the increasing demand for convenience in power tools, many have adopted lithium-ion battery power, eliminating the need for users to drag long power cords and greatly simplifying their experience. However, lithium-ion battery-powered tools generally suffer from limitations in battery life and power output. Therefore, if both AC power and lithium-ion battery power could be integrated into the power tool, users could choose different power sources according to their needs, further improving the performance of the power tool.

[0003] However, in power tools that inherit both power supply modes, it is necessary to avoid the problem of users accidentally operating the mains power and lithium battery power simultaneously, as this may damage the lithium battery or electronic components. Therefore, a technical solution is needed to overcome the above-mentioned technical problems. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a self-resetting sliding contact switch for dual-mode power supply, which solves the technical problem of damage to the battery pack or electronic components caused by simultaneous lithium battery power supply and mains power supply.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a self-resetting slide switch, comprising a circuit board with two terminals and conductors embedded inside, a switch box integrally formed on the surface of the circuit board, a slider slidably disposed inside the switch box, and multiple spring contacts for connecting the terminals and conductors on the circuit board disposed on the slider. The multiple terminals and conductors on the circuit board extend into the switch box and are arranged sequentially and discretely. When the slider drives the multiple spring contacts to slide from one end of the switch box to the other end, the spring contacts connect and conduct different terminals and conductors, realizing circuit switching. Push rods extending along the sliding direction of the slider are respectively connected to both ends of the slider. The connecting rod extends out of the switch box along the same direction through the side wall and connects to both ends of the same connecting rod. Multiple pre-compressed springs are installed between the connecting rod and the switch box. The spring force drives the connecting rod to move away from the switch box. The connecting rod, via a push rod, moves a slider to one end of the switch box. Two terminals and two conductors form a battery pack power supply circuit via spring contacts. The conductors also form a mains power supply circuit via spring contacts. The connecting rod is used to cooperate with the battery pack. When the battery pack is installed, pushing the connecting rod towards the switch box connects the battery pack power supply circuit and disconnects the mains power supply circuit. When the battery pack is removed, the connecting rod and slider reset, connecting the mains power supply circuit and disconnecting the battery pack power supply circuit.

[0006] As a preferred embodiment, each spring is a long strip-shaped U-shaped groove structure. The outer bottom surface of the spring is used to connect the terminal and the conductor. The top of the middle part of the two side walls of the groove is respectively provided with an outward flange. The slider has a long hole corresponding to each spring. The middle end of each long hole facing away from the circuit board has a limiting groove that cooperates with the outward flange. The middle end of each long hole facing away from the circuit board also has two crimping grooves. The two crimping grooves are respectively located on both sides of the limiting groove. A compression spring is provided in each of the two crimping grooves. An inner cover is detachably fastened to the middle end of the slider facing away from the circuit board. The inner cover presses the compression spring tightly in the crimping groove. The other end of the compression spring is crimped onto the spring. Each spring is inserted into the long hole in a corresponding manner. The outward flange in the middle of the spring abuts against the bottom of the limiting groove. The two ends of the spring are pressed by the compression spring and keep extending out of the long hole and close to the circuit board, maintaining contact with the exposed terminals or conductors on the circuit board.

[0007] As a preferred embodiment, the top opening of the switch box is used to install the slider. A top cover is detachably connected to the top opening of the switch box. Two sliding grooves extending along the sliding direction of the slider are opened on the inner surface of the top cover. Two sliding rails corresponding to the sliding grooves are opened on the upper surface of the inner cover. When the top cover is placed on the switch box, the sliding rails slide and engage in the corresponding sliding grooves, so that the slider slides along the axial direction of the sliding groove.

[0008] As a preferred embodiment, the switch box has multiple spring mounting holes on the side facing the connecting rod. The spring mounting holes are blind holes. The connecting rod is provided with positioning posts that correspond one-to-one with the spring mounting holes and extend in the direction of the spring mounting holes. The springs are coil springs, with one end of the spring sleeved on the positioning post and the other end embedded in the spring mounting hole.

[0009] The beneficial effects of this utility model are: This utility model utilizes a connecting rod that cooperates with the battery pack and a spring-driven slider to slide in two states, namely, assembling and removing the battery pack, to switch between different power supply circuits, thereby avoiding the technical problem of simultaneous power supply from the battery pack and mains power. It provides technical support for powering power tools through both battery pack and mains power modes, thereby improving the performance of power tools. Attached Figure Description

[0010] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0011] Figure 1 This is an exploded view of the structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the assembly structure of the spring clip;

[0013] Figure 3 This is a structural diagram of the top cover;

[0014] Figure 4This is a schematic diagram of the circuit connection structure inside the circuit board;

[0015] Figures 1-4 In the middle: 1. Circuit board; 2. Switch box; 3. Slider; 4. Spring; 5. Push rod; 6. Connecting rod; 7. Spring; 8. Outward flange; 9. Long hole; 10. Limiting groove; 11. Crimping groove; 12. Compression spring; 13. Inner cover; 14. Top cover; 15. Slide groove; 16. Slide rail; 17. Spring mounting hole; 18. Positioning post; 19. Positive terminal; 20. Negative terminal; 21. First connecting conductor; 22. Second connecting conductor; 23. Third connecting conductor; 24. Fourth connecting conductor; 25. Fifth connecting conductor; 26. Common conductor; 27. Baffle. Detailed Implementation

[0016] The specific implementation scheme of this utility model will now be described in detail with reference to the accompanying drawings.

[0017] like Figures 1-3 The self-resetting slide-touch switch shown is used for dual-mode power supply. It includes a circuit board 1 with two internally embedded terminals and multiple conductors. A switch box 2 is integrally formed on the surface of the circuit board. A slider 3 is slidably disposed inside the switch box 2. Multiple spring contacts 4 are provided on the slider 3 for connecting the terminals and conductors on the circuit board 1. The multiple terminals and conductors on the circuit board 1 extend into the switch box 2 and are arranged sequentially and discretely. When the slider 3 drives the multiple spring contacts 4 to slide from one end of the switch box 2 to the other, the spring contacts 4 connect and conduct different terminals and conductors, realizing circuit switching. Push rods 5 extending along the sliding direction of the slider 3 are connected to both ends of the slider 3. The two push rods 5 extend out of the switch box 2 through the side wall in the same direction and are simultaneously connected to both ends of the same connecting rod 6. The connecting rod 6 and the switch box 2... Multiple pre-compressed springs 7 are installed between the switch box 2 and the switch box 2. The elastic force of the springs 7 drives the connecting rod 6 to move away from the switch box 2. The connecting rod 6 drives the slider 3 to move to one end of the switch box 2 through the push rod 5. The two terminals and two conductors form the battery pack power supply circuit through the spring sheet 4. The multiple conductors form the mains power supply circuit through the spring sheet 4. The connecting rod 6 is used to cooperate with the battery pack. When the battery pack is installed, the connecting rod 6 is pushed to move towards the switch box 2 to connect the battery pack power supply circuit and disconnect the mains power supply circuit. When the battery pack is removed, the connecting rod 6 and the slider 3 are reset to connect the mains power supply circuit and disconnect the battery pack power supply circuit. The circuit board 1 is also provided with a baffle 27 to block the connecting rod 6. The baffle 27 is located on the side of the connecting rod 6 away from the switch box 2. The baffle 27 can limit the maximum distance of the connecting rod 6 away from the switch box 2 and play a positioning role.

[0018] In this embodiment, any one of the spring pieces 4 is a long strip-shaped U-shaped groove structure. The outer bottom surface of the spring piece 4 is used to connect the terminal and the conductor. The top of the middle part of the two side walls of the groove is respectively provided with an outward flange 8. The slider 3 is provided with elongated holes 9 corresponding to the spring pieces 4. The middle end of any one of the elongated holes 9 facing away from the circuit board 1 is provided with a limiting groove 10 that cooperates with the outward flange 8. The middle end of any one of the elongated holes 9 facing away from the circuit board is also provided with two crimping grooves 11. The two crimping grooves 11 are respectively provided on both sides of the limiting groove 10. Each of the 11 is provided with a compression spring 12. The end of the slider 3 facing away from the circuit board 1 is detachably fastened with an inner cover 13. The inner cover 13 presses the compression spring 12 tightly into the crimping groove 11. The other end of the compression spring 12 is crimped onto the spring piece 4. The spring pieces 4 are inserted into the elongated holes 9 one by one. The outer flange 8 in the middle of the spring piece 4 abuts against the bottom of the limiting groove 10. The two ends of the spring piece 4 are pressed by the compression spring 12 and keep the end extending out of the elongated hole 9 close to the circuit board and abut against the exposed terminals or conductors on the circuit board 1.

[0019] This embodiment further provides an opening at the top of the switch box 2 for mounting the slider 3, thereby improving the ease of assembly of the slider 3. A top cover 14 is detachably connected to the top opening of the switch box 2. Two grooves 15 extending along the sliding direction of the slider 3 are formed on the inner surface of the top cover 14. Two slide rails 16 corresponding to the grooves 15 are formed on the upper surface of the inner cover 13. When the top cover 14 is placed on the switch box 2, the slide rails 16 slide and engage within the corresponding grooves 15, allowing the slider 3 to slide axially along the grooves 15. This improves the sliding stability of the slider 3 and the accuracy of the sliding position of the spring 4.

[0020] In this embodiment, multiple spring mounting holes 17 are provided on the side of the switch box 2 facing the connecting rod 6. The spring mounting holes 17 are blind holes. The connecting rod 6 is provided with positioning posts 18 that correspond one-to-one with the spring mounting holes 17 and extend in the direction of the spring mounting holes 17. The spring 7 is a coil spring. One end of the spring 7 is sleeved on the positioning post 18 and the other end is embedded in the spring mounting hole 17, thereby stabilizing the position of the spring and preventing the spring 7 from falling off and causing the slider 3 to fail to reset.

[0021] like Figure 4 As shown, in this embodiment, the two terminals are a positive terminal 19 and a negative terminal, respectively. The conductors include a first connecting conductor 21, a second connecting conductor 22, a third connecting conductor 23, a fourth connecting conductor 24, a fifth connecting conductor 25, and a common conductor 26. The first connecting conductor 21 extends into the switch box 2 and maintains a contact relationship with one end of a spring 4. The positive terminal 19 and the common conductor 26 are respectively disposed on one side of the first connecting conductor 21 and arranged along the sliding direction of the spring 4 and corresponding to the other end of the spring 4. When the spring 4 slides, it connects the positive terminal 19 and the first connecting conductor 21 or the common conductor 26 and the first connecting conductor 21, respectively.

[0022] The second connecting conductor 22 extends into the switch box 2 and maintains abutment with one end of another spring 4. The third connecting conductor 23 extends into the switch box 2 and is arranged side by side on one side of the positive terminal 19. The other end of the spring 4 that abuts against the second connecting conductor 22 corresponds to the third connecting conductor 23 and the common conductor 26. When the spring 4 slides, it connects the second connecting conductor 22 and the third connecting conductor 23 or the second connecting conductor 22 and the common conductor 26 respectively.

[0023] The third connecting conductor 23 extends to a normally closed end 23a, which corresponds to the third spring 4. The fourth connecting conductor 24 is arranged parallel to the third connecting conductor 23 and maintains a contact relationship with the fourth spring 4. The negative terminal 20 and the fifth connecting conductor 25 are both arranged between the third connecting conductor 23 and the fourth connecting conductor 24 and are arranged along the sliding direction of the spring 4. The negative terminal 20 and the positive terminal 19 are located at the same end of the switch box 2. The fifth connecting conductor 25 and the common conductor 26 are located at the other end of the switch box 2. When the third spring 4 slides to connect the third connecting conductor 23 and the fifth connecting conductor 25, the fourth spring 4 also connects the fifth connecting conductor 25 and the fourth connecting conductor 24, so that the third connecting conductor 23, the fourth connecting conductor 24, and the fifth connecting conductor 25 are interconnected. When the fourth spring 4 slides to connect the fourth connecting conductor 24 and the negative terminal 20, the third spring 4 slides away from the normally closed end 23a and the fifth connecting conductor 25, forming an unoccupied state.

[0024] Both the positive terminal 19 and the negative terminal 20 are located at the end of the switch box 2 furthest from the spring 7. When the connecting rod 6 is pushed close to the switch box 2 by the battery pack, all four spring contacts 4 are pushed to the end of the switch box 2 furthest from the spring 7, making the positive terminal 19 connected to the first connecting conductor 21 and the negative terminal 20 connected to the fourth connecting conductor 24. The positive terminal 19 and the negative terminal 20 are then connected to the positive and negative terminals of the battery pack, thus enabling the battery pack power supply circuit to be turned on and power to the battery pack. At this time, since the fifth connecting terminal 25, which is used to connect to the mains power wire, is not connected to the circuit, the mains power supply circuit is disconnected, so it will not affect the normal operation of the battery pack power supply circuit.

[0025] When the battery pack is removed, the connecting rod 6 loses its thrust and then resets under the restoring force of the spring 7, driving the spring 4 to move to the other end of the switch box 2, disconnecting the battery pack power supply circuit. Conversely, it connects the mains power supply circuit, supplying power to the power tool through the mains power. Since the battery pack is not connected at this time, the mains power supply will not affect the safety of the battery pack.

[0026] The self-resetting sliding switch for dual-mode power supply described in this embodiment is designed to be installed on the battery pack mounting base or battery clip. As for the specific structure of how the battery pack drives the connecting rod 6, it is a conventional linkage mechanism. As long as a component that abuts against the connecting rod 6 is provided on the battery pack, and the battery pack assembly direction is set to be consistent with the sliding direction of the slider 3, the connecting rod 6 can be pushed to move when the battery pack is assembled. Therefore, its structure will not be described in this embodiment. Those skilled in the art can easily make corresponding structural design schemes based on the description of this embodiment.

[0027] The above embodiments are merely illustrative of the principles and effects of the present invention, as well as some examples of its application, and are not intended to limit the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of the present invention, and these modifications and improvements are all within the scope of protection of the present invention.

Claims

1. A self-resetting slide-touch switch for dual-mode power supply, comprising a circuit board with two terminals and a conductor internally embedded, characterized in that, A switch box is integrally formed on the surface of the circuit board. A slider is slidably mounted inside the switch box, and multiple spring contacts are mounted on the slider for connecting terminals and conductors on the circuit board. The terminals and conductors on the circuit board extend into the switch box and are arranged sequentially and discretely. When the slider moves the multiple spring contacts from one end of the switch box to the other, the spring contacts connect and conduct different terminals and conductors, achieving circuit switching. Each end of the slider is connected to a push rod extending along the sliding direction of the slider. The two push rods extend out of the switch box through the side wall in the same direction and are simultaneously connected to the same... Multiple pre-compressed springs are installed at both ends of the connecting rod and between the connecting rod and the switch box. The spring force drives the connecting rod to move away from the switch box. The connecting rod drives the slider to one end of the switch box via a push rod. The two terminals and two conductors form a battery pack power supply circuit through spring contacts. The conductors form a mains power supply circuit through spring contacts. The connecting rod is used to cooperate with the battery pack. When the battery pack is installed, the connecting rod is pushed towards the switch box to connect the battery pack power supply circuit and disconnect the mains power supply circuit. When the battery pack is removed, the connecting rod and slider reset to connect the mains power supply circuit and disconnect the battery pack power supply circuit.

2. The self-resetting sliding contact switch according to claim 1, characterized in that, Each spring has a long strip-shaped U-shaped groove structure. The outer bottom surface of the spring is used to connect the terminal and the conductor. The top of the middle part of the two side walls of the groove is respectively provided with an outward flange. The slider has a long hole corresponding to the spring. The middle end of each long hole facing away from the circuit board has a limiting groove that cooperates with the outward flange. The middle end of each long hole facing away from the circuit board also has two crimping grooves. The two crimping grooves are located on both sides of the limiting groove. A compression spring is provided in each of the two crimping grooves. The middle end of the slider facing away from the circuit board is detachably fastened with an inner cover. The inner cover presses the compression spring tightly in the crimping groove. The other end of the compression spring is crimped onto the spring. The springs are inserted into the long holes one by one. The outward flange in the middle of the spring abuts against the bottom of the limiting groove. The two ends of the spring are pressed by the compression spring and keep extending out of the long hole and close to the circuit board, and keep abutting against the exposed terminals or conductors on the circuit board.

3. The self-resetting sliding contact switch according to claim 2, characterized in that, The top opening of the switch box is used to install the slider. A top cover is detachably connected to the top opening of the switch box. Two sliding grooves extending along the sliding direction of the slider are opened on the inner surface of the top cover. Two sliding rails corresponding to the sliding grooves are opened on the upper surface of the inner cover. When the top cover is on the switch box, the sliding rails slide and engage in the corresponding sliding grooves, so that the slider slides along the axial direction of the sliding groove.

4. The self-resetting sliding contact switch according to claim 1, characterized in that, The switch box has multiple spring mounting holes on the side facing the connecting rod. The spring mounting holes are blind holes. The connecting rod is provided with positioning posts that correspond one-to-one with the spring mounting holes and extend in the direction of the spring mounting holes. The springs are coil springs, with one end of the spring sleeved on the positioning post and the other end embedded in the spring mounting hole.

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