A single-wire power supply device applied to low-power consumption equipment

Abstract

The application relates to the field of power supply devices, and discloses a single-live-wire power supply device applied to low-power-consumption equipment, which comprises a power supply body and an input end, a voltage reduction circuit, an output end and a control circuit which are sequentially and electrically connected inside, wherein the input end and the output end each comprise a binding post fixed on the power supply body, further comprising: a wiring slot which is helically arranged on the outer surface of the binding post and is used for mounting a winding wire base assembly, the base assembly is arranged at the bottom end of the binding post; a wire fixing cylinder which is hollow with an open bottom end, the wire fixing cylinder is sleeved on the binding post, the inside of the wire fixing cylinder is provided with a soft elastic insulator which is used for fixing the wire wound on the binding post; and a fixing mechanism arranged between the base assembly and the wire fixing cylinder, so that the single-live-wire power supply device is very stable in wiring, the subsequent use stability and practicability of the single-live-wire power supply device are improved, and the wiring process and the wire dismounting process are very convenient and efficient.

Description

Technical Field

[0001] This invention relates to the field of power supply devices, specifically a single-wire power supply device for use in low-power devices. Background Technology

[0002] Single-wire power supply refers to directly powering wall-mounted electronic switches, smart switches, and super switches by using only the live wire (phase wire) controlled by a switch connected in series with the light fixture, without directly connecting the neutral wire. Single-wire power supply is mainly used for powering electronic switches, smart switches, and super switches, especially for low-power devices replacing existing mechanical switches after renovation without altering the wiring. Traditional single-wire power supply devices often involve simply wrapping the wire around the terminal block and securing it with screws or clamps. However, this method is prone to loosening due to vibration, temperature changes, etc., affecting the normal operation of the power supply device. Therefore, we propose a single-wire power supply device for low-power devices. Summary of the Invention

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this invention provides a single live wire power supply device for low-power devices, thus solving the aforementioned problems.

[0005] (II) Technical Solution

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solution: a single-wire power supply device for low-power devices, comprising a power supply body and an input terminal, a step-down circuit, an output terminal, and a control circuit connected in sequence internally, wherein both the input terminal and the output terminal include terminals fixed on the power supply body, and further comprising:

[0007] A wiring groove, which is spirally formed on the outer surface of the terminal block, is used to install and wind wires.

[0008] The base assembly is located at the bottom of the terminal block, and a wire-passing opening is provided on one side of the base assembly for threading the wire into the base assembly in a uniformly prescribed position and wrapping it from bottom to top in the wiring groove opened on the terminal block.

[0009] A wire retainer is a hollow structure with an open bottom. The wire retainer is fitted onto a terminal block. The inside of the wire retainer is provided with a soft and elastic insulator for fixing the wire wound around the terminal block.

[0010] A fixing mechanism is provided between the base assembly and the wire retainer. This fixing mechanism is used to fix the wire retainer in the base assembly, and to fix the wire to the terminal block after the wire retainer and the base assembly are connected together.

[0011] Preferably, the input terminal is used to receive a single live wire input, including a fuse, a filter, and a surge protector, to protect the power supply device from external interference and damage;

[0012] The step-down circuit is used to step down the DC power to a suitable voltage range according to the needs of the equipment;

[0013] The output terminal is used to output the processed electrical energy to low-power devices.

[0014] The control circuit is responsible for monitoring and controlling the working status of the power supply device, including standby status, working status, and protection functions.

[0015] Preferably, both the input and output terminals include rectifier and filter circuits to convert the input AC power into DC power and perform filtering to reduce ripple and noise.

[0016] Preferably, at the bottom end of the wire-fixing tube, a wire-holding notch is provided at the position corresponding to the wire-threading opening on the base assembly, and the height of the wire-holding notch is the same as the width of the wire-threading opening. The wire-holding notch is open at the bottom end of the wire-fixing tube.

[0017] Preferably, the base assembly includes an integrated base ring and a ring sleeve. The base ring is fixedly sleeved on the terminal near the bottom end, and the ring sleeve is fixed on the top of the base ring. The wire threading opening is opened on one side of the ring sleeve and the top of the ring sleeve is open.

[0018] Preferably, the end face diameter of the base ring is larger than that of the ring sleeve, the ring sleeve is hollow and the port diameter is larger than that of the end face diameter of the terminal, that is, an annular groove is formed between the inner wall of the ring sleeve and the outer surface of the terminal, and the difference between the inner and outer diameters of the annular groove is the same as the overall thickness of the wire-fixing tube, the outer surface of the wire-fixing tube is attached to the inner wall of the ring sleeve, and the bottom end of the wire-fixing tube is attached to the top outer wall of the base ring.

[0019] Preferably, the fixing mechanism includes a collar, a return spring, a hemispherical groove, and a retaining ball. The collar is fitted onto the outer surface of the sleeve corresponding to the base assembly. A second threading opening, aligned with and overlapping the first threading opening on the base assembly, is provided on the collar. One side of the second threading opening on the collar is open through. An open-bottomed hollow ring groove is provided inside the collar. The bottom of the collar is lower than the bottom of the base ring, and the top of the hollow ring groove is higher than the base ring. The collar has a corresponding hollow... Multiple sets of equidistant, annularly distributed return springs are fixedly connected between the top inner wall of the annular groove and the base annular disc. The top end of the collar is flush with the top end of the annular sleeve. Multiple sets of through-type curved arc grooves are opened on the outer ring side of the annular sleeve corresponding to the collar. Each set of curved arc grooves on the annular sleeve is filled with a retaining ball. A hemispherical retaining groove is opened on the outer surface of the wire tube that is in contact with the annular sleeve, corresponding to the position of each set of curved arc grooves. The part of the retaining ball protruding from the curved arc groove is engaged in the hemispherical retaining groove opened on the wire tube.

[0020] Preferably, the inner wall of the annular side of the collar component corresponding to the empty annular groove slides and fits against the outer annular side wall of the base annular disk, the thickness of the annular sleeve is less than the diameter of the clamping ball, and the side of the clamping ball located in the curved through groove fits against the annular inner wall of the collar component.

[0021] Preferably, the bottom of the wire-fixing cylinder is a frustum-shaped cone with the bottom end recessed inward.

[0022] (III) Beneficial Effects

[0023] Compared with the prior art, the present invention provides a single live-wire power supply device for low-power devices, which has the following features:

[0024] Beneficial effects:

[0025] 1. This single-wire power supply device for low-power devices features terminals at its input and output ends that can replace traditional nut and bolt wiring methods. The terminals have grooves and are fitted with wire-fixing sleeves. The wires are pressed and adhered to the terminals by the wire-fixing sleeves, which then secure the sleeves, thus completing the fixed wiring. This ensures very stable wiring for the single-wire power supply device, improving its subsequent stability and practicality. Furthermore, the wiring and disconnection processes are very convenient and efficient, facilitating wire replacement or repair.

[0026] 2. This single-wire power supply device for low-power devices uses a spirally formed wiring groove on the outer surface of the terminal block for mounting and winding wires. Its design allows the wires to be wound spirally around the terminal block, increasing the contact area between the wires and the terminal block, thereby improving the stability of the connection.

[0027] 3. This single-wire power supply device for low-power devices uses a soft, elastic insulator inside the wire-fixing cylinder to tightly fit the outer surface of the terminal block and the wire wound on the terminal block. This allows the wire to be fixed to the terminal block. The elastic deformation of the soft, elastic insulator allows the thickness of the wire wound on the terminal block to be greater than the depth of the wiring groove. Furthermore, the compressive force of the inner wall of the soft, elastic insulator fixes the wire to the terminal block, improving the adaptability and practicality of the wiring of this single-wire power supply device.

[0028] 4. This single-wire power supply device for low-power devices ensures that the wires are threaded and wound in a uniformly prescribed manner through the wire-threading opening one of the base assembly, the wire-clamping notch of the wire-fixing tube, and the wire-threading opening two of the matching collar, further improving the standardization of the connection. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of the present invention;

[0030] Figure 2 This is a schematic diagram of the terminal block structure of the present invention;

[0031] Figure 3 This is a schematic diagram of the connection structure between the base assembly and the cable retainer of the present invention;

[0032] Figure 4 This is a schematic cross-sectional view of the fixed tube structure of the present invention;

[0033] Figure 5 This is a cross-sectional schematic diagram of the connection structure between the collar and the wire-fixing cylinder of the present invention;

[0034] Figure 6 for Figure 5 A magnified view of part A in the diagram;

[0035] Figure 7 This is a schematic diagram of the internal circuit module framework of the present invention;

[0036] Figure 8 This is a schematic diagram of the power supply circuit logic of the present invention.

[0037] In the diagram: 1. Power supply body; 2. Terminal block; 3. Base assembly; 4. Sleeve ring; 5. Wire retainer; 6. Wiring groove; 7. Base ring disc; 8. Ring sleeve; 9. Wire threading opening one; 10. Wire clamping notch; 11. Wire threading opening two; 12. Empty ring groove; 13. Return spring; 14. Bent arc through groove; 15. Hemispherical clamping groove; 16. Clamping ball; 17. Soft elastic insulator; 18. Input terminal; 19. Step-down circuit; 20. Output terminal; 21. Control circuit. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] Please see Figure 1-8 A single-wire power supply device for low-power devices includes a power supply body 1 and an input terminal 18, a step-down circuit 19, an output terminal 20, and a control circuit 21 connected in sequence inside the power supply body 1. The input terminal 18 and the output terminal 20 both include terminals 2 fixed to the power supply body 1. The device also includes:

[0040] The wiring groove 6, which is spirally formed on the outer surface of the terminal 2, is used to install and wrap the wire. The design of the wiring groove 6 allows the wire to be spirally wrapped around the terminal, increasing the contact area between the wire and the terminal, thereby improving the stability of the connection.

[0041] The base assembly 3 is located at the bottom of the terminal block 2, and a wire-passing opening 9 is provided on one side of the base assembly 3 for threading wires into the base assembly 3 in a uniformly prescribed position and winding them from bottom to top into the wiring groove 6 opened on the terminal block 2.

[0042] The wire retainer 5 is hollow with an open bottom. The wire retainer 5 is sleeved on the terminal block 2. The inside of the wire retainer 5 is provided with a soft and elastic insulator 17 for fixing the wire wound on the terminal block 2. The soft and elastic insulator 17 can be made of rubber.

[0043] A fixing mechanism is provided between the base assembly 3 and the wire retainer 5. This fixing mechanism is used to fix the wire retainer 5 in the base assembly 3. The wire is connected to the terminal block 2 and fixed by the cooperation between the wire retainer 5 and the base assembly 3. At the same time, the design of the fixing mechanism allows the wire retainer to be easily removed or installed from the base assembly, which is convenient for the replacement or maintenance of the wire.

[0044] Input terminal 18 is used to receive single live wire input, including fuses, filters, and surge protectors, to protect the power supply unit from external interference and damage;

[0045] The step-down circuit 19 is used to step down the DC power to a suitable voltage range according to the needs of the equipment;

[0046] Output terminal 20 is used to output the processed electrical energy to low-power devices;

[0047] The control circuit 21 is responsible for monitoring and controlling the working status of the power supply device, including standby status, working status and protection functions. By selecting low-power components and optimizing circuit design, standby power consumption is reduced. For example, low-power switching transistors, control chips and power management modules are used.

[0048] Both input terminal 18 and output terminal 20 include rectifier and filter circuits to convert the input AC power into DC power and perform filtering to reduce ripple and noise. By optimizing the design of the rectifier and filter circuits and the buck circuit, the power conversion efficiency is improved. For example, a high-efficiency rectifier and filter circuit and buck circuit topology are adopted.

[0049] At the bottom end of the wire-fixing tube 5, a wire-holding notch 10 is provided at the position corresponding to the wire-threading opening 9 on the base assembly 3. The wire-holding notch 10 is aligned with the wire-threading opening 9, and the height of the wire-holding notch 10 is the same as the width of the wire-threading opening 9. The wire-holding notch 10 is open at the bottom end of the wire-fixing tube 5.

[0050] The base assembly 3 includes an integrated base ring 7 and a ring sleeve 8. The base ring 7 is fixedly sleeved on the terminal block 2 near the bottom end, and the ring sleeve 8 is fixed on the top of the base ring 7. The wire threading opening 9 is opened on one side of the ring sleeve 8 and the top of the ring sleeve 8 is open.

[0051] The end face diameter of the base ring 7 is larger than that of the ring sleeve 8. The ring sleeve 8 is hollow and its port diameter is larger than that of the end face diameter of the terminal 2. That is, an annular groove is formed between the inner wall of the ring sleeve 8 and the outer surface of the terminal 2. The difference between the inner and outer diameters of the annular groove is the same as the overall thickness of the wire-fixing tube 5. The outer surface of the wire-fixing tube 5 is attached to the inner wall of the ring sleeve 8, and the bottom end of the wire-fixing tube 5 is attached to the top outer wall of the base ring 7.

[0052] The fixing mechanism includes a collar 4, a return spring 13, a hemispherical groove 15, and a retaining ball 16. The collar 4 is fitted onto the outer surface of the ring sleeve 8 of the base assembly 3. The collar 4 has a second threading opening 11 that is aligned and coincident with the first threading opening 9 on the base assembly 3. The second threading opening 11 is open through one side of the collar 4. The collar 4 has an open-bottomed hollow ring groove 12 inside. The bottom of the collar 4 is lower than the bottom of the base ring plate 7, and the top of the hollow ring groove 12 is higher than the base ring plate 7. Multiple sets of return springs 13 are fixedly connected between the top inner wall of the hollow ring groove 12 and the base ring plate 7 in an annular arrangement. The top of the collar 4 is flush with the top of the ring sleeve 8. The ring sleeve 8 is fitted onto the collar. Multiple sets of through-type curved grooves 14 are provided on the outer ring side of component 4, and each set of curved grooves 14 on the ring sleeve 8 is filled with a retaining ball 16. On the outer surface of the wire-fixing tube 5 that is in contact with the ring sleeve 8, a hemispherical groove 15 is provided at the position of each set of curved grooves 14. The part of the retaining ball 16 protruding from the curved groove 14 is engaged in the hemispherical groove 15 on the wire-fixing tube 5. By opening the wire-locking notch 10, the wire-locking notch 10 is aligned with the wire-threading opening 9, and the wire-fixing tube 5 can be sleeved to the bottom end and attached to the base ring 7. Since the position of the wire-locking notch 10 is unique, when the wire-fixing tube 5 is sleeved, the multiple sets of hemispherical grooves 15 on the wire-fixing tube 5 can be aligned one by one with the multiple sets of curved grooves 14 on the ring sleeve 8.

[0053] The inner wall of the annular side of the collar 4 corresponding to the empty annular groove 12 slides and fits against the outer annular side wall of the base annular disk 7. The thickness of the annular sleeve 8 is less than the diameter of the clamping ball 16. The side of the clamping ball 16 located in the curved through groove 14 fits against the annular inner wall of the collar 4.

[0054] The bottom of the wire-fixing cylinder 5 is a truncated cone shape with the bottom end recessed inward. Designing the bottom end of the wire-fixing cylinder 5 as a truncated cone shape makes it easier for the bottom end of the wire-fixing cylinder 5 to be displaced into the ring sleeve 8. This facilitates the pressing of the multiple sets of clamping balls 16 embedded in the ring sleeve 8 to the outside of the ring sleeve 8 until the side of the clamping balls 16 is flush with the inner wall of the ring sleeve 8.

[0055] Working Principle: When wiring this single-wire power supply device for low-power devices, the wire is passed through the wire-passing opening 11 on one side of the collar 4 and the wire-passing opening 9 on the other side of the base assembly 3 into the collar sleeve 8. Then, the wire is wound from bottom to top along the wiring groove 6 onto the terminal 2, and any excess is trimmed. The fixing sleeve 5 is then fitted onto the terminal 2. The soft, elastic insulator 17 inside the fixing sleeve 5 tightly conforms to the outer surface of the terminal 2 and the wire wound on the terminal 2, thus fixing the wire to the terminal 2. The elastic deformation of the soft, elastic insulator 17 allows the wire thickness wound on the terminal 2 to be greater than the depth of the wiring groove 6, and the compressive force of the inner wall of the soft, elastic insulator 17 secures the wire to the terminal 2. Fixed to terminal 2, this improves the adaptability and practicality of the wiring of the single-wire power supply device. The wire-clamping notch 10, aligned with the wire-passing opening 9, allows the wire-fixing cylinder 5 to be fitted onto the bottom edge of the base ring disc 7. Because the wire-clamping notch 10 is uniquely positioned, when fitting the wire-fixing cylinder 5, the multiple sets of hemispherical slots 15 on the wire-fixing cylinder 5 can be aligned one-to-one with the multiple sets of curved through slots 14 on the ring sleeve 8. During the fitting process, the collar 4 needs to be pressed down, causing the multiple return springs 13 to compress and deform, and the top of the collar 4 to be lower than the curved through slots 14 on the ring sleeve 8. At this time, the clamping balls 16 in the multiple curved through slots 14 can move, meaning the clamping balls 16 can move towards the ring... The outer displacement of the sleeve 8, with the bottom end of the wire-fixing cylinder 5 designed as a frustum, facilitates the movement of the bottom end of the wire-fixing cylinder 5 into the annular sleeve 8. This allows the multiple sets of retaining balls 16 embedded in the annular sleeve 8 to be pressed outwards until the sides of the retaining balls 16 are flush with the inner wall of the annular sleeve 8. After the bottom end of the wire-fixing cylinder 5 is in contact with the base ring disc 7, the collar 4 can be released. Under the action of multiple sets of return springs 13, the collar 4 can move upwards and return to its original position. The collar 4 can also press the portion of the retaining balls 16 protruding from the side of the annular sleeve 8, causing the multiple sets of retaining balls 16 to move inwards into the annular sleeve 8 and protrude from the inner wall of the annular sleeve 8 on one side. The portion of the retaining balls 16 protruding from the inner wall of the annular sleeve 8 can then be engaged with the wire-fixing cylinder 5. This allows the wire retainer 5, which is sleeved on the terminal block 2, to be fixed. The terminal block 2, which includes the input end 18 and the output end 20 of the single-wire power supply device, can replace the traditional nut and bolt wiring method. The terminal block 2 has a wiring groove 6 and is sleeved with the wire retainer 5. After the wire is pressed and adhered to the terminal block 2 by the wire retainer 5, the wire retainer 5 is fixed, thus completing the fixed wiring of the terminal block 2. The structural design of the base assembly 3 and the wire retainer 5 takes into account the tight fit with the terminal block 2, reducing the possibility of loosening and wear, improving the durability of the power supply device, making the wiring of the single-wire power supply device very stable, improving the subsequent stability and practicality of the single-wire power supply device, and the wiring and disconnection processes are very convenient and efficient.

Claims

1. A single-wire power supply device for low-power devices, comprising a power supply body (1) and an input terminal (18), a step-down circuit (19), an output terminal (20), and a control circuit (21) connected in sequence internally, wherein the input terminal (18) and the output terminal (20) both include terminals (2) fixed on the power supply body (1), characterized in that: Also includes: A wiring groove (6) is spirally opened on the outer surface of the terminal block (2) for installing and winding wires; a base assembly (3) is set at the bottom end of the terminal block (2), and a wire-passing opening (9) is opened on one side of the base assembly (3) for passing the wires into the base assembly (3) in a uniformly prescribed position and winding them from bottom to top into the wiring groove (6) opened on the terminal block (2); a wire-fixing tube (5) is hollow with an open bottom end, and the wire-fixing tube (5) is sleeved on the terminal block (2), and a soft elastic insulator (17) is provided inside the wire-fixing tube (5) for fixing the wires wound on the terminal block (2); a fixing mechanism is set between the base assembly (3) and the wire-fixing tube (5), which is used to fix the wire-fixing tube (5) in the base assembly (3), and the wires are connected to the terminal block (2) and fixed through the cooperation of the wire-fixing tube (5) and the base assembly (3); The base assembly (3) includes an integrated base ring disc (7) and a ring sleeve (8). The base ring disc (7) is fixedly sleeved on the terminal block (2) near the bottom end, and the ring sleeve (8) is fixed on the top of the base ring disc (7). The wire threading opening (9) is opened on one side of the ring sleeve (8) and the top of the ring sleeve (8) is open. The end face diameter of the base ring disc (7) is larger than that of the ring sleeve (8). The ring sleeve (8) is hollow and its port diameter is larger than that of the end face diameter of the terminal (2). That is, an annular groove is formed between the inner wall of the ring sleeve (8) and the outer surface of the terminal (2). The difference between the inner and outer diameters of the annular groove is the same as the overall thickness of the wire tube (5). The outer surface of the wire tube (5) is attached to the inner wall of the ring sleeve (8), and the bottom end of the wire tube (5) is attached to the top outer wall of the base ring disc (7). The fixing mechanism includes a collar (4), a return spring (13), a hemispherical groove (15), and a retaining ball (16). The collar (4) is fitted onto the outer surface of the ring sleeve (8) of the base assembly (3). The collar (4) has a second threading opening (11) aligned with the first threading opening (9) on the base assembly (3). The second threading opening (11) is open on one side of the collar (4). The collar (4) has a bottom-opening hollow ring groove (12) inside. The bottom of the collar (4) is lower than the bottom of the base ring disc (7), and the top of the hollow ring groove (12) is higher than the base ring disc (7). Multiple sets of equidistant, annularly distributed reset springs (13) are fixedly connected between the top inner wall of the annular groove (12) and the base annular disc (7). The top end of the collar (4) is flush with the top end of the annular sleeve (8). Multiple sets of annularly distributed through curved grooves (14) are opened on the outer ring side of the annular sleeve (8) corresponding to the collar (4). Each set of curved grooves (14) of the annular sleeve (8) is filled with a retaining ball (16). A hemispherical retaining groove (15) is opened on the outer surface of the fixed tube (5) that is in contact with the annular sleeve (8) at the position of each set of curved grooves (14). The part of the retaining ball (16) protruding from the curved groove (14) is engaged in the hemispherical retaining groove (15) opened on the fixed tube (5).

2. The single-wire power supply device for low-power devices according to claim 1, characterized in that: The input terminal (18) is used to receive single live wire input, including fuses, filters, and surge protectors, to protect the power supply device from external interference and damage; The step-down circuit (19) is used to step down the DC power to a suitable voltage range according to the needs of the device; the output terminal (20) is used to output the processed electrical energy to low-power devices; the control circuit (21) is responsible for monitoring and controlling the working status of the power supply device, including standby status, working status and protection function; both the input terminal (18) and the output terminal (20) include rectifier and filter circuits to convert the input AC power into DC power and perform filtering to reduce ripple and noise.

3. A single-wire power supply device for low-power devices according to claim 1, characterized in that: At the bottom end of the wire-fixing tube (5), a wire-holding notch (10) is provided corresponding to the wire-threading opening (9) on the base assembly (3), and the height of the wire-holding notch (10) is the same as the width of the wire-threading opening (9). The wire-holding notch (10) is open at the bottom end of the wire-fixing tube (5).

4. A single-wire power supply device for low-power devices according to claim 1, characterized in that: The inner wall of the annular side of the collar (4) corresponding to the empty annular groove (12) slides and fits against the outer annular side wall of the base ring disk (7). The thickness of the ring sleeve (8) is less than the diameter of the clamping ball (16). The side of the clamping ball (16) located in the curved through groove (14) fits against the annular inner wall of the collar (4).

5. A single-wire power supply device for low-power devices according to claim 1, characterized in that: The bottom of the fixed wire cylinder (5) is a truncated cone shape with the bottom end recessed inward.

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