Single-live-wire power supply device applied to low-power-consumption equipment

Abstract

The invention 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, an input end, a step-down circuit, an output end and a control circuit, the input end, the step-down circuit, the output end and the control circuit are sequentially and electrically connected in the power supply body, and the input end and the output end both comprise binding posts fixedly arranged on the power supply body. The base is spirally arranged on the outer surface of the binding post, is used for mounting a winding wire base assembly and is arranged at the bottom end of the binding post; the wire fixing cylinder is in a hollow shape with an opening in the bottom end, the binding post is sleeved with the wire fixing cylinder, and a soft elastic insulator is arranged in the wire fixing cylinder and used for fixing a wire wound on the binding post; the fixed connection mechanism arranged between the base assembly and the wire fixing cylinder enables wiring of the single-live-wire power supply device to be very stable, the subsequent use stability and practicability of the single-live-wire power supply device are improved, and the wiring process and the wire removing process are very convenient and efficient.

Description

Technical Field

[0001] The invention relates to the field of power supply devices, in particular to a single live wire power supply device applied to low power consumption equipment. Background Art

[0002] Single-live-wire power supply refers to the use of only the switch in series with the lamp to control the live wire (phase line), and to directly power the electronic switch, smart switch and super switch installed on the wall without directly connecting the neutral wire. Single-live-wire power supply is mainly used in the power supply of electronic switches, smart switches and super switch products, especially for low-power devices that replace the original mechanical switches after decoration without changing the line. When wiring, traditional single-live-wire power supply devices often simply wrap the wires around the terminal and then fix them by screws or pressure plates. However, this fixing method is prone to loosening the wires due to factors such as vibration and temperature changes, thereby affecting the normal operation of the power supply device. For this reason, we propose a single-live-wire power supply device for low-power devices. Summary of the invention

[0003] 1. Technical issues to be solved

[0004] In view of the deficiencies in the prior art, the present invention provides a single live wire power supply device applied to low-power consumption equipment, which solves the above-mentioned problems.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a single live wire power supply device applied to low-power consumption equipment, comprising a power supply body and an input end, a step-down circuit, an output end and a control circuit electrically connected in sequence therein, wherein the input end and the output end both comprise a terminal fixedly mounted on the power supply body, and further comprising:

[0007] The wiring groove is spirally opened on the outer surface of the terminal and is used to install the winding wire;

[0008] A base assembly is arranged at the bottom end of the terminal, and a wire threading opening is provided on one side of the base assembly, which is used to pass the wire into the base assembly according to a uniformly specified position and wind the wire from bottom to top in the wiring groove provided on the terminal;

[0009] A wire fixing barrel, which is hollow with an open bottom, is sleeved on the terminal, and a soft elastic insulator is provided inside the wire fixing barrel for fixing the wires wound on the terminal;

[0010] A fastening mechanism is arranged between the base assembly and the wire fixing barrel, and is used to fix the wire fixing barrel in the base assembly, and the wire is connected to the terminal and fixed after being matched with the wire fixing barrel and the base assembly.

[0011] Preferably, the input end is used to receive a single live wire input, and includes 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 requirements of the device;

[0013] The output end is used to output the processed electric energy to a low-power consumption device for use;

[0014] The control circuit is responsible for monitoring and controlling the working state of the power supply device, including standby state, working state and protection function;

[0015] Preferably, the input end and the output end both include a rectifier filter circuit for converting the input alternating current into direct current and performing filtering to reduce ripple and noise.

[0016] Preferably, a wire holding notch aligned with the wire threading opening 1 is provided at the bottom end of the wire fixing barrel corresponding to the position of the wire threading opening 1 on the base assembly, and the height of the wire holding notch is the same as the width of the wire threading opening 1, and the wire holding notch is open corresponding to the bottom end of the wire fixing barrel.

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

[0018] Preferably, the end face diameter of the base ring disk is larger than that of the ring sleeve, and the ring sleeve is hollow and the port diameter is larger than 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 barrel, the outer surface of the wire fixing barrel is fitted on the inner wall of the ring sleeve, and the bottom end of the wire fixing barrel is fitted on the top outer wall of the base ring disk.

[0019] Preferably, the fixing mechanism comprises a collar, a return spring, a hemispherical slot and a cartridge ball, the base assembly corresponds to the outer surface of the ring sleeve and is fitted with a collar, and the collar corresponds to the position of the threading opening one on the base assembly and is provided with a threading opening two that is aligned and overlapped with the threading opening one, one side of the threading opening two corresponding to the collar is open-ended, an empty ring groove with an open bottom is provided inside the collar, the bottom end of the collar is lower than the bottom end of the base ring disk, the top end of the empty ring groove is higher than the base ring disk, and the corresponding empty ring groove in the collar is A plurality of groups of return springs equidistantly distributed in an annular shape are fixedly connected between the top inner wall of the annular groove and the base ring disk, the top of the collar member is flush with the top of the ring sleeve, and a plurality of groups of through-type arc grooves distributed in an annular shape are provided on the outer ring side of the ring sleeve corresponding to the collar member, and the corresponding groups of arc grooves of the ring sleeve are filled with cartridge balls, and a hemispherical groove is provided on the outer surface of the wire fixing barrel and the ring sleeve that are in contact with the position of each group of arc grooves, and the part of the cartridge ball protruding from the arc groove is clamped in the hemispherical groove provided on the wire fixing barrel.

[0020] Preferably, the annular side inner wall of the ring member corresponding to the empty ring groove is slidably fitted with the outer ring side wall of the base ring disk, the thickness of the ring sleeve is smaller than the diameter of the cartridge sphere, and the side of the cartridge sphere located in the curved groove is fitted with the annular inner wall of the ring member.

[0021] Preferably, the bottom of the wire barrel is in the shape of a frustum with the bottom end indented inwards.

[0022] (III) Beneficial effects

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

[0024] Beneficial effects:

[0025] 1. The single-live-wire power supply device applied to low-power consumption equipment has terminals included at its input and output ends that can replace the traditional nut and bolt wiring method. A wiring groove is provided on the terminal and a wire fixing barrel is provided on the outside. After the wire is squeezed and fitted on the terminal through the wire fixing barrel, the wire fixing barrel is fixed to complete the fixed wiring of the terminal, so that the wiring of the single-live-wire power supply device is very stable, which improves the subsequent use stability and practicality of the single-live-wire power supply device, and the wiring process and the wiring removal process are very convenient and efficient, which is convenient for the replacement or repair of the wires.

[0026] 2. The single-live-wire power supply device used for low-power consumption equipment is used to install winding wires through a wiring groove spirally opened on the outer surface of the terminal. Its design allows the wire to be spirally wound on the terminal, increasing the contact area between the wire and the terminal, thereby improving the stability of the connection.

[0027] 3. The single-live-wire power supply device applied to low-power consumption equipment can fix the wire on the terminal post by tightly fitting the outer surface of the terminal post and the wire wound on the terminal post through the soft elastic insulator inside the wire fixing barrel, and the elastic deformability of the soft elastic insulator can allow the thickness of the wire wound on the terminal post to be greater than the opening depth of the terminal groove, and the wire is fixed on the terminal post through the squeezing force of the inner wall of the soft elastic insulator, thereby improving the adaptability and practicality of the wiring of the single-live-wire power supply device.

[0028] 4. The single live wire power supply device applied to low-power consumption equipment ensures that the wires are inserted and wound in accordance with uniformly specified positions through the wire threading opening 1 of the base assembly, the wire clamping notch of the wire barrel and the wire threading opening 2 of the matching ring component, thereby further improving the standardization of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0031] Figure 3 It is a schematic diagram of the connection structure between the base assembly and the wire barrel of the present invention;

[0032] Figure 4 The wire-fixing barrel structure of the present invention and its cross-sectional schematic diagram;

[0033] Figure 5 It is a cross-sectional schematic diagram of the connection structure between the collar member and the wire barrel of the present invention;

[0034] Figure 6 for Figure 5 A local enlarged schematic diagram of point A in FIG.

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

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

[0037] In the figure: 1. power supply body; 2. terminal; 3. base assembly; 4. collar; 5. wire barrel; 6. wiring slot; 7. base ring disk; 8. ring sleeve; 9. threading opening one; 10. wire clamping notch; 11. threading opening two; 12. empty ring groove; 13. reset spring; 14. curved arc groove; 15. hemispherical clamping groove; 16. clamping barrel sphere; 17. soft elastic insulator; 18. input end; 19. step-down circuit; 20. output end; 21. control circuit. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] See also Figure 1-8 A single live wire power supply device for low power consumption equipment 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 which are electrically connected in sequence, wherein the input terminal 18 and the output terminal 20 both include a terminal 2 fixedly mounted on the power supply body 1, and further includes:

[0040] The wiring groove 6 is spirally opened on the outer surface of the terminal 2 and is used to install the winding wire. The design of the wiring groove 6 allows the wire to be spirally wound on the terminal, increasing the contact area between the wire and the terminal, thereby improving the stability of the connection;

[0041] A base component 3 is arranged at the bottom end of the terminal 2, and a wire threading opening 9 is provided on one side of the base component 3, for inserting the wire into the base component 3 according to a uniformly specified position and winding the wire from bottom to top in the wiring groove 6 provided on the terminal 2;

[0042] The wire barrel 5 is hollow with an open bottom. The wire barrel 5 is sleeved on the terminal 2. A soft elastic insulator 17 is provided inside the wire barrel 5 for fixing the wires wound around the terminal 2. The material of the soft elastic insulator 17 can be rubber.

[0043] A fastening mechanism is provided between the base assembly 3 and the wire barrel 5, and is used to fix the wire barrel 5 in the base assembly 3, and the wires are connected to the terminal 2 and then fixed by the cooperation of the wire barrel 5 and the base assembly 3. At the same time, the design of the fastening mechanism allows the wire barrel to be easily removed from or installed on the base assembly, which is convenient for replacement or repair of the wires.

[0044] The input terminal 18 is used to receive a single live wire input, and includes a fuse, a filter, and a surge protector to protect the power supply device 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 requirements of the device;

[0046] The output terminal 20 is used to output the processed electric energy to a low-power consumption device;

[0047] The control circuit 21 is responsible for monitoring and controlling the working state of the power supply device, including the standby state, working state and protection function, etc., and reduces the standby power consumption by selecting low-power components and optimizing circuit design, for example, using low-power switch tubes, control chips and power management modules, etc.;

[0048] The input terminal 18 and the output terminal 20 both include a rectifier filter circuit for converting the input AC power into DC power and performing filtering processing to reduce ripple and noise. The power conversion efficiency is improved by optimizing the design of the rectifier filter circuit and the buck circuit, for example, by adopting a high-efficiency rectifier filter circuit and buck circuit topology.

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

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

[0051] The end face diameter of the base ring disk 7 is larger than the ring sleeve 8. The ring sleeve 8 is hollow and the port diameter is larger than 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, and the difference between the inner and outer diameters of the annular groove is the same as the overall thickness of the wire fixing barrel 5. The outer surface of the wire fixing barrel 5 is fitted on the inner wall of the ring sleeve 8, and the bottom end of the wire fixing barrel 5 is fitted on the top outer wall of the base ring disk 7.

[0052] The fixing mechanism includes a collar part 4, a reset spring 13, a hemispherical groove 15 and a cartridge ball 16. The base component 3 is fitted with a collar part 4 on the outer surface of the ring sleeve 8, and the collar part 4 is provided with a threading opening 2 11 aligned with and overlapping with the threading opening 1 9 at the position of the threading opening 1 9 on the base component 3. The threading opening 2 11 corresponds to one side of the collar part 4 and is open-ended. An empty ring groove 12 with an open bottom is provided inside the collar part 4. The bottom end of the collar part 4 is lower than the bottom end of the base ring disk 7, and the top of the empty ring groove 12 is higher than the base ring disk 7. A plurality of groups of reset springs 13 distributed in an annular shape and at equal intervals are fixedly connected between the top inner wall of the collar part 4 corresponding to the empty ring groove 12 and the base ring disk 7. The top of the collar part 4 is flush with the top of the ring sleeve 8, and the ring sleeve 8 fits the collar part 4 accordingly. A plurality of groups of through-type arc grooves 14 distributed in an annular shape are provided on the outer ring side of the component 4, and the corresponding groups of arc grooves 14 of the ring sleeve 8 are filled with clamping cylinder balls 16, and the outer surface of the fixed wire barrel 5 and the ring sleeve 8 are fitted with hemispherical clamping grooves 15 corresponding to the position of each group of arc grooves 14, and the part of the clamping cylinder ball 16 protruding from the arc groove 14 is clamped in the hemispherical clamping groove 15 provided on the fixed wire barrel 5, and by opening the clamping notch 10, the clamping notch 10 is aligned with the threading opening 9, and the fixed wire barrel 5 can be sleeved until it fits the base ring disk 7 at the bottom. Due to the opening of the clamping notch 10, its position is unique, so when the fixed wire barrel 5 is sleeved, the multiple groups of hemispherical clamping grooves 15 provided on the fixed wire barrel 5 can be aligned one by one with the multiple groups of arc grooves 14 provided on the ring sleeve 8.

[0053] The annular side inner wall of the ring member 4 corresponding to the empty annular groove 12 is slidably fitted with the outer ring side wall of the base ring disk 7, the thickness of the ring sleeve 8 is smaller than the diameter of the cartridge sphere 16, and the side of the cartridge sphere 16 located in the curved groove 14 is fitted with the annular inner wall of the ring member 4.

[0054] The bottom of the wire fixing barrel 5 is in the shape of a cone with the bottom end indented inward. By designing the bottom end of the wire fixing barrel 5 into a cone shape, when the bottom end of the wire fixing barrel 5 is moved into the ring sleeve 8, the multiple groups of cartridge balls 16 embedded and filled in the ring sleeve 8 can be squeezed toward the outside of the ring sleeve 8 until the side surfaces of the cartridge balls 16 are flush with the inner wall of the ring sleeve 8.

[0055] Working principle: When wiring the single-live-wire power supply device applied to low-power consumption equipment, the wire can be inserted into the ring sleeve 8 through the wire threading opening 2 11 opened on one side of the ring member 4 and the wire threading opening 1 9 opened on one side of the base assembly 3, and then the wire is wound onto the terminal 2 from bottom to top according to the wiring groove 6, and the excess part is cut off, and then the wire fixing barrel 5 can be sleeved onto the terminal 2, and the soft elastic insulator 17 inside the wire fixing barrel 5 will fit tightly to the outer surface of the terminal 2 and the wire wound on the terminal 2, so that the wire can be fixed on the terminal 2, and the elastic deformability of the soft elastic insulator 17 can allow the thickness of the wire wound on the terminal 2 to be greater than the opening depth of the wiring groove 6, and the wire is fixed by the squeezing force of the inner wall of the soft elastic insulator 17. The present invention is fixed on the terminal 2, which improves the adaptability and practicality of the wiring of the single-live-wire power supply device. By opening the wire clamping notch 10, the wire clamping notch 10 is aligned with the threading opening 9, and the wire fixing barrel 5 can be sleeved until the bottom end fits the base ring disk 7. Due to the opening of the wire clamping notch 10, its position is unique, so when the wire fixing barrel 5 is sleeved, the multiple groups of hemispherical clamping grooves 15 opened on the wire fixing barrel 5 can be aligned one by one with the multiple groups of curved arc grooves 14 opened on the ring sleeve 8. In the process of sleeve-fitting the wire fixing barrel 5, it is necessary to press the collar member 4 downward to cause the multiple reset springs 13 to be compressed and deformed, and the top of the collar member 4 is lower than the curved arc grooves 14 opened on the ring sleeve 8. At this time, the sleeve balls 16 in the multiple groups of curved arc grooves 14 are movable, that is, the sleeve balls 16 can move toward the ring sleeve 8. The outer side of the sleeve 8 is displaced, and the bottom end of the wire barrel 5 is designed to be a frustum, which can facilitate the displacement of the bottom end of the wire barrel 5 into the ring sleeve 8, and can facilitate the extrusion of the multiple groups of cartridge balls 16 embedded and filled in the ring sleeve 8 to the outside of the ring sleeve 8, until the side of the cartridge balls 16 is flush with the inner wall of the ring sleeve 8. After that, when the bottom end of the wire barrel 5 is in contact with the base ring disk 7, the collar member 4 can be loosened, and under the action of the multiple groups of reset springs 13, the collar member 4 can be moved up and reset, and the collar member 4 can squeeze the part of the cartridge balls 16 protruding from the side of the ring sleeve 8, so that the multiple groups of cartridge balls 16 are displaced into the inside of the ring sleeve 8 and one side protrudes from the inner wall of the ring sleeve 8, and the part of the cartridge balls 16 protruding from the inner wall of the ring sleeve 8 can be snapped into the wire barrel 5 opened on the wire barrel 5. Thereby, the wire barrel 5 sleeved on the terminal 2 is fixed. The terminal 2 included in the input terminal 18 and the output terminal 20 in the single-live-wire power supply device can replace the traditional nut and bolt type wiring method. A wiring groove 6 is opened on the terminal 2 and a wire barrel 5 is sleeved on the outside. After the wire is squeezed and fitted on the terminal 2 by the wire barrel 5, the wire barrel 5 is fixed to complete the fixed wiring of the terminal 2. The structural design of the base assembly 3 and the wire barrel 5 takes into account the close fit with the terminal 5, reduces the possibility of looseness and wear, and improves the durability of the power supply device, so that the wiring of the single-live-wire power supply device is very stable, improves the subsequent use stability and practicality of the single-live-wire power supply device, and the wiring process and the wiring removal process are very convenient and efficient.

Claims

1. A single live wire power supply device for low power consumption equipment, comprising a power supply body (1) and an input end (18), a step-down circuit (19), an output end (20) and a control circuit (21) electrically connected in sequence therein, wherein the input end (18) and the output end (20) both comprise a terminal (2) fixedly mounted on the power supply body (1), characterized in that: Also includes: A wiring groove (6) is spirally formed on the outer surface of the wiring post (2) and is used for installing a winding wire; A base assembly (3) is arranged at the bottom end of the terminal (2), and a wire threading opening (9) is provided on one side of the base assembly (3) for inserting the wire into the base assembly (3) at a uniformly specified position and winding the wire from bottom to top into a wire threading groove (6) provided on the terminal (2); A wire fixing barrel (5) which is hollow with an open bottom end, the wire fixing barrel (5) being sleeved on the terminal (2), and a soft elastic insulator (17) being arranged inside the wire fixing barrel (5) for fixing the wire wound on the terminal (2); A fastening mechanism is provided between the base assembly (3) and the wire fixing barrel (5), and is used to fix the wire fixing barrel (5) in the base assembly (3), and to connect the wire to the terminal (2) and then fix it through the cooperation between the wire fixing barrel (5) and the base assembly (3).

2. A single live wire power supply device for low power consumption equipment according to claim 1, characterized in that: The input end (18) is used to receive a single live wire input, and includes a fuse, a filter, and a surge protector, and is used to protect the power supply device from external interference and damage; The step-down circuit (19) is used to step down the direct current to a suitable voltage range according to the requirements of the device; The output end (20) is used to output the processed electric energy to a low-power consumption device for use; The control circuit (21) is responsible for monitoring and controlling the working state of the power supply device, including standby state, working state and protection function; The input end (18) and the output end (20) both include a rectifier filter circuit for converting input alternating current into direct current and performing filtering to reduce ripple and noise.

3. A single live wire power supply device for low power consumption equipment according to claim 1, characterized in that: A wire clamping notch (10) aligned with the wire threading opening (9) is provided at the bottom end of the wire fixing barrel (5) at a position corresponding to the wire threading opening (9) provided on the base assembly (3), and the height of the wire clamping notch (10) is the same as the width of the wire threading opening (9), and the wire clamping notch (10) is open at the bottom end of the wire fixing barrel (5) corresponding to the position of the wire threading opening (9).

4. A single live wire power supply device for low power consumption equipment according to claim 1, characterized in that: The base assembly (3) comprises an integrated base ring disk (7) and a ring sleeve (8); the base ring disk (7) is fixedly sleeved on the terminal post (2) near the bottom end, and the ring sleeve (8) is fixedly arranged on the top end of the base ring disk (7); the threading opening (9) is provided on one side of the ring sleeve (8) and corresponds to the top end of the ring sleeve (8) being open.

5. A single live wire power supply device for low power consumption equipment according to claim 4, characterized in that: The end face diameter of the base ring disk (7) is larger than that of the ring sleeve (8); the ring sleeve (8) is hollow and has a port diameter larger than the end face diameter of the terminal (2); that is, an annular hollow groove is formed between the inner wall of the ring sleeve (8) and the outer surface of the terminal (2); and the difference between the inner and outer diameters of the annular hollow groove is the same as the overall thickness of the wire fixing barrel (5); the outer surface of the wire fixing barrel (5) is fitted on the inner wall of the ring sleeve (8), and the bottom end of the wire fixing barrel (5) is fitted on the top outer wall of the base ring disk (7).

6. A single live wire power supply device for low power consumption equipment according to claim 5, characterized in that: The fixing mechanism comprises a collar (4), a return spring (13), a hemispherical groove (15) and a cartridge ball (16); the collar (4) is fitted and sleeved on the outer surface of the corresponding ring sleeve (8) of the base component (3); and the collar (4) is provided with a threading opening (11) aligned and overlapped with the threading opening (9) at a position corresponding to the threading opening (9) on the base component (3); the threading opening (11) is open on one side corresponding to the collar (4); an empty ring groove (12) with an open bottom is provided inside the collar (4); the bottom end of the collar (4) is lower than the bottom end of the base ring disk (7); the top end of the empty ring groove (12) is higher than the base ring disk (7); the corresponding empty ring groove (12) in the collar (4) is A plurality of groups of return springs (13) equidistantly distributed in an annular shape are fixedly connected between the top inner wall of the annular groove (12) and the base ring disk (7); the top end of the collar member (4) is flush with the top end of the annular sleeve (8); the outer ring side of the annular sleeve (8) corresponding to the collar member (4) is provided with a plurality of groups of through-type curved grooves (14) distributed in an annular shape, and the corresponding groups of curved grooves (14) of the annular sleeve (8) are all filled with cartridge balls (16); the outer surface of the fixed wire barrel (5) and the annular sleeve (8) are provided with hemispherical clamping grooves (15) at the position corresponding to each group of curved grooves (14), and the part of the cartridge ball (16) protruding from the curved groove (14) is clamped in the hemispherical clamping groove (15) provided on the fixed wire barrel (5).

7. A single live wire power supply device for low power consumption equipment according to claim 6, characterized in that: The inner wall of the annular side surface of the collar member (4) corresponding to the empty annular groove (12) is slidably fitted with the outer ring side wall of the base ring disk (7); the thickness of the annular sleeve (8) is smaller than the diameter of the cartridge ball (16); and the side surface of the cartridge ball (16) located in the curved groove (14) is fitted with the annular inner wall of the collar member (4).

8. The single live wire power supply device for low power consumption equipment according to claim 1, characterized in that: The bottom of the wire fixing barrel (5) is in the shape of a frustum with the bottom end indented inwards.

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