A power supply with switchable output voltage
By incorporating a knob handle and a reset spring into the power supply, the problem of accidental voltage switching caused by accidental activation of the rotary button is solved, achieving stable voltage switching and preventing accidental activation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEFEI XINSHENG DIANDA ELECTRONIC TECH CO LTD
- Filing Date
- 2025-07-21
- Publication Date
- 2026-06-05
AI Technical Summary
The rotary knobs on existing power supplies lack anti-accidental-touch features, which can easily lead to abnormal switching of the output voltage due to accidental touches.
A power supply with switchable output voltage was designed. By setting a knob handle and a reset spring, the plug can be separated from the slot, realizing the function of preventing accidental contact and ensuring stable voltage switching.
It effectively prevents abnormal voltage switching caused by accidental contact, provides good protection against accidental contact, and ensures the stability and safety of the power supply output voltage.
Smart Images

Figure CN224328632U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of power supply technology, and in particular to a power supply with switchable output voltage. Background Technology
[0002] With the development of the power supply technology industry, various types of power supplies have appeared on the market. These power supplies originate from the principle of "magnetism generating electricity" and are generated from renewable energy sources such as hydropower, wind power, tidal power, water pressure difference in dams, and solar energy, as well as from burning coal and oil residue. Common power supplies are dry cell batteries (DC) and household 110V-220V AC power supplies.
[0003] Some power supplies can switch the output voltage, such as AC / DC regulated power supplies, which mainly adjust the output voltage by rotating the adjustment knob.
[0004] However, since the aforementioned rotary buttons are mostly direct rotations and do not have an anti-accidental-touch function, accidental touches may cause the rotary buttons to rotate abnormally, resulting in changes in the output voltage and potentially causing accidents. Therefore, we propose a power supply with switchable output voltage. Utility Model Content
[0005] The purpose of this utility model is to provide a power supply with switchable output voltage. By setting a knob handle, a reset spring can be used to separate the plug from the slot, thereby creating a good anti-accidental contact function and facilitating the later docking of the plug with the slot, thus making it easier to drive the rotary button to rotate.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a power supply with switchable output voltage, comprising a power supply body and a rotary button disposed on the power supply body, wherein one end of the rotary button is provided with a knob handle, and the knob handle comprises:
[0007] A rotating cover is provided on one side of a rotary button, and a connecting component is provided between the rotating cover and the rotary button. The connecting component is used to connect the rotating cover and the rotary button, and the rotating cover can move along the connecting component.
[0008] A rotating assembly is disposed on one side of a rotating dome, and a positioning assembly is disposed between the rotating assembly and the rotating dome;
[0009] The insert block is fixedly connected to one side of the rotating cover, and the end of the rotary button is provided with a slot that matches the insert block;
[0010] A reset spring is sleeved on the outer surface of the insert block.
[0011] Preferably, the connection component includes:
[0012] A connecting sleeve is fixedly connected to the middle of the rotating dome;
[0013] A connecting rod is inserted into the inside of a connecting sleeve. One end of the connecting rod is fixedly connected to a threaded post. A threaded groove is provided in the middle of the rotary button, and the inside of the threaded groove is threadedly connected to one end of the threaded post.
[0014] A limiting block is fixedly connected to the other end of the connecting rod, and a cross-shaped groove is formed on the outer surface of the limiting block.
[0015] Preferably, the insert includes a limiting block fixedly connected to the outer surface of the rotating cover and a docking block fixedly connected to one end of the limiting block, with one end of the docking block close to the slot.
[0016] Preferably, the slot includes a mating groove formed on one side of the threaded groove and a limiting groove formed on one side of the mating groove, wherein the inner contour of the mating groove is adapted to the outer contour of the mating block, and the inner contour of the limiting groove is adapted to the outer contour of the limiting block.
[0017] Preferably, the rotating assembly includes a turntable and a protrusion fixedly connected to the outer surface of the turntable, and the positioning assembly includes:
[0018] A positioning post is fixedly connected to one side of the turntable. A connecting block is fixedly connected to one end of the positioning post, and a cylinder is fixedly connected to one side of the connecting block. A rubber sleeve is fixedly connected to the outer surface of the cylinder.
[0019] Positioning holes are provided on the side of the rotating cover.
[0020] Preferably, a pointer is fixedly connected to the side of the rotary button, and the distance between the pointer and the rotating cover is greater than the movement distance of the rotating cover.
[0021] The technical effects and advantages of this utility model are as follows:
[0022] The rotating cover is connected to the rotary button via a connecting component. Pushing the rotating component along the connecting component moves the rotating cover, allowing the plug to align with the slot. Rotating the rotating component, using the mutual limiting of the plug and slot, causes the rotating cover to rotate along with the rotary button, thus switching the output voltage of the power supply. When the rotating cover is no longer in use, a reset spring resets the rotating cover, separating the plug from the slot. At this point, even if the rotating cover is rotated, the rotary button will not rotate abnormally, thus preventing abnormal voltage switching. This design utilizes a knob handle, providing good protection against accidental contact. Attached Figure Description
[0023] Figure 1This is a three-dimensional structural diagram of the present invention.
[0024] Figure 2 This utility model Figure 1 A magnified schematic diagram of the structure at point A in the middle.
[0025] Figure 3 This is a schematic diagram of the knob handle structure of this utility model.
[0026] Figure 4 This utility model Figure 3 A magnified schematic diagram of the structure at point B in the middle.
[0027] Figure 5 This utility model Figure 3 A magnified schematic diagram of the structure at point C.
[0028] Figure 6 This is a schematic diagram of the insert structure of this utility model.
[0029] In the diagram: 1. Power supply body; 2. Rotary button; 3. Pointer; 4. Rotating cover; 5. Rotating assembly; 501. Turntable; 502. Protrusion; 6. Connecting assembly; 601. Connecting sleeve; 602. Threaded groove; 603. Threaded post; 604. Connecting rod; 605. Limiting block; 7. Return spring; 8. Insert block; 801. Connecting block; 802. Limiting block; 9. Slot; 901. Connecting groove; 902. Limiting groove; 10. Positioning assembly; 1001. Positioning post; 1002. Connecting block; 1003. Cylinder; 1004. Rubber sleeve; 1005. Positioning hole. Detailed Implementation
[0030] 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.
[0031] This utility model provides, for example Figure 1-6 The diagram shows a power supply with switchable output voltage.
[0032] Example 1: Includes a power supply body 1 and a rotary button 2 mounted on the power supply body 1. One end of the rotary button 2 has a knob handle, which includes a rotating cover 4. The rotating cover 4 is located on one side of the rotary button 2, and a connecting component 6 is provided between the rotating cover 4 and the rotary button 2. The connecting component 6 connects the rotating cover 4 and the rotary button 2, allowing the rotating cover 4 to move along the connecting component 6. A rotating component 5 is located on one side of the rotating cover 4, and a positioning component 10 is provided between the rotating component 5 and the rotating cover 4. A plug 8 is fixedly connected to one side of the rotating cover 4. The end of the rotary button 2 has a slot 9 that matches the plug 8. A return spring 7 is sleeved on the outer surface of the plug 8. The rotating cover 4 and the rotary button 2 are connected by the connecting component 6. Rotate button 2 to connect, then push rotating component 5 along connecting component 6, thereby moving rotating cover 4 so that plug 8 and slot 9 are inserted. Then rotate rotating component 5, and using the mutual limiting of plug 8 and slot 9, rotating cover 4 drives rotating button 2 to rotate together, thereby switching the output voltage of power supply body 1. When rotating cover 4 is not used later, reset spring 7 drives rotating cover 4 to reset, so that plug 8 and slot 9 are separated. At this time, even if rotating cover 4 is rotated, rotating button 2 will not rotate abnormally, thus preventing abnormal voltage switching. This design uses a knob handle, thus having a good anti-accidental contact function. The specific way rotating button 2 switches the output voltage is existing technology and will not be described in detail here.
[0033] Furthermore, the connecting assembly 6 includes a connecting sleeve 601, which is fixedly connected to the middle of the rotating cover 4. A connecting rod 604 is inserted into the inside of the connecting sleeve 601. One end of the connecting rod 604 is fixedly connected to a threaded post 603. A threaded groove 602 is provided in the middle of the rotary button 2, and the inside of the threaded groove 602 is threadedly connected to one end of the threaded post 603. The other end of the connecting rod 604 is fixedly connected to a limiting block 605, and a cross-shaped groove is provided on the outer surface of the limiting block 605. By inserting the connecting rod 604 into the connecting sleeve 601 and then inserting a screwdriver into the cross-shaped groove, the limiting block 605 is rotated, thereby causing the threaded post 603 to engage with the threaded groove 602, thus fixing the rotating cover 4 to the side of the rotary button 2.
[0034] Furthermore, the insert 8 includes a limiting block 802 fixedly connected to the outer surface of the rotating cover 4 and a mating block 801 fixedly connected to one end of the limiting block 802. One end of the mating block 801 is close to the slot 9. The slot 9 includes a mating groove 901 opened on one side of the threaded groove 602 and a limiting groove 902 opened on one side of the mating groove 901. The inner contour of the mating groove 901 matches the outer contour of the mating block 801, and the inner contour of the limiting groove 902 matches the outer contour of the limiting block 802. By moving the rotating cover 4 inward, the mating block 801 is inserted into the mating groove 901 until the limiting block 802 and the limiting groove 902 mutually limit each other. Then, by rotating the rotating assembly 5, the rotating button 2 can be driven to rotate. When the reset spring 7 drives the rotating cover 4 to reset, the limiting block 802 and the limiting groove 902 separate. At this time, there is no limiting effect between the insert 8 and the slot 9.
[0035] Furthermore, the rotating assembly 5 includes a turntable 501 and a protrusion 502 fixedly connected to the outer surface of the turntable 501. The positioning assembly 10 includes a positioning post 1001, which is fixedly connected to one side of the turntable 501. A connecting block 1002 is fixedly connected to one end of the positioning post 1001, and a cylinder 1003 is fixedly connected to one side of the connecting block 1002. A rubber sleeve 1004 is fixedly connected to the outer surface of the cylinder 1003. A positioning hole 1005 is opened on the side of the rotating cover 4. By moving the rotating assembly 5 outward, the rubber sleeve 1004 is separated from the positioning hole 1005, thereby exposing the cross-shaped groove to facilitate the disassembly of the connecting assembly 6. Later, the rubber sleeve 1004 can be inserted into the positioning hole 1005, and then the protrusion 502 can be rotated to make the turntable 501 rotate.
[0036] Example 2: Example 2 further discloses that, based on Example 1, a pointer 3 is fixedly connected to the side of the rotary button 2, and the distance between the pointer 3 and the rotating cover 4 is greater than the movement distance of the rotating cover 4; this makes it convenient for the rotary button 2 to rotate, thereby making it easy for the pointer 3 to point to the corresponding output voltage mark, thus making it easy to quickly understand the current output voltage.
[0037] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A power supply with switchable output voltage, comprising a power supply body (1) and a rotary button (2) disposed on the power supply body (1), characterized in that, One end of the rotary button (2) is provided with a knob handle, the knob handle comprising: A rotating cover (4) is provided on one side of the rotary button (2), and a connecting component (6) is provided between the rotating cover (4) and the rotary button (2). The connecting component (6) is used to connect the rotating cover (4) and the rotary button (2). The rotating cover (4) can move along the connecting component (6). A rotating component (5) is disposed on one side of the rotating cover (4), and a positioning component (10) is disposed between the rotating component (5) and the rotating cover (4); Insert (8), the insert (8) is fixedly connected to one side of the rotating cover (4), and the end of the rotary button (2) is provided with a slot (9) that is compatible with the insert (8); A reset spring (7) is sleeved on the outer surface of the insert block (8).
2. The power supply with switchable output voltage according to claim 1, characterized in that, The connection component (6) includes: A connecting sleeve (601) is fixedly connected to the middle part of the rotating dome (4); A connecting rod (604) is inserted into the inside of a connecting sleeve (601). One end of the connecting rod (604) is fixedly connected to a threaded post (603). A threaded groove (602) is provided in the middle of the rotary button (2), and the inside of the threaded groove (602) is threadedly connected to one end of the threaded post (603). A limiting block (605) is fixedly connected to the other end of the connecting rod (604), and a cross-shaped groove is provided on the outer surface of the limiting block (605).
3. The power supply with switchable output voltage according to claim 2, characterized in that, The insert (8) includes a limiting block (802) fixedly connected to the outer surface of the rotating cover (4) and a docking block (801) fixedly connected to one end of the limiting block (802), and one end of the docking block (801) is close to the slot (9).
4. A power supply with switchable output voltage according to claim 3, characterized in that, The slot (9) includes a mating groove (901) opened on one side of the threaded groove (602) and a limiting groove (902) opened on one side of the mating groove (901), and the inner contour of the mating groove (901) is adapted to the outer contour of the mating block (801), and the inner contour of the limiting groove (902) is adapted to the outer contour of the limiting block (802).
5. A power supply with switchable output voltage according to claim 1, characterized in that, The rotating assembly (5) includes a turntable (501) and a protrusion (502) fixedly connected to the outer surface of the turntable (501). The positioning assembly (10) includes: A positioning post (1001) is fixedly connected to one side of a turntable (501). A connecting block (1002) is fixedly connected to one end of the positioning post (1001). A cylinder (1003) is fixedly connected to one side of the connecting block (1002). A rubber sleeve (1004) is fixedly connected to the outer surface of the cylinder (1003). Positioning hole (1005) is provided on the side of rotating cover (4).
6. A power supply with switchable output voltage according to claim 1, characterized in that, A pointer (3) is fixedly connected to the side of the rotary button (2), and the distance between the pointer (3) and the rotating cover (4) is greater than the movement distance of the rotating cover (4).