Programmable DC power supply

Abstract

The invention relates to the field of direct-current power supplies, in particular to a programmable direct-current power supply which comprises a dustproof component, a direct-current power supply body, an interface arranged on the power supply body, a protective sleeve arranged at the outer end of the interface, a connector arranged at the outer end of the protective sleeve and an insulating head arranged on the connector. The wire rod is arranged on the insulating head, the four sealing plates are arranged in the protective sleeve, and the four sealing plates rotate to seal an interface; the rotating component comprises a containing assembly arranged at the outer end of the protective sleeve, a gear tooth assembly arranged in the containing assembly, a butt joint assembly arranged on the sealing plate, a guiding assembly arranged in the containing assembly and a pushing assembly arranged in the containing assembly. And the anti-falling part comprises an elastic assembly arranged on the pushing assembly, and the device can perform dust prevention without using an interface, and can prevent loosening between the connector and the interface.

Description

Technical Field

[0001] The invention relates to the field of direct current power supplies, in particular to a programmable direct current power supply. Background Art

[0002] Programmable DC power supply is the abbreviation of programmable DC power supply. A display screen, multiple buttons and multiple power interfaces are set on the front end of the DC power supply device. When using it, first plug the connector into the power interface, and then use multiple buttons to program and control the DC power output and input, and display real-time data on the display screen.

[0003] During use, the power interface of the existing programmable DC power supply is always in an open state. When multiple interfaces are not needed, dust easily enters some interfaces due to the lack of connectors. Over time, dust accumulates. When the interface is needed next time, the dust may cause abnormal connection. Although sealing plugs can be used to seal unused interfaces, it is necessary to find the plugs each time, which is inconvenient. Summary of the invention

[0004] In view of the fact that in the above or prior art there is a problem that when there is no need to use multiple interfaces, dust can easily enter some interfaces due to the lack of connectors. When the interface is needed next time, the dust can easily cause connection abnormalities. The present invention is proposed.

[0005] It is therefore an object of the present invention to provide an electrical component for a rotary transformer.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: including dust-proof components, including a DC power supply body, an interface arranged on the power supply body, a protective cover arranged at the outer end of the interface, a connector arranged at the outer end of the protective cover, an insulating head arranged on the connector, a wire arranged on the insulating head, and four sealing plates arranged in the protective cover, and the four sealing plates are rotated to close the interface; a rotating component, including a accommodating component arranged at the outer end of the protective cover, a gear component arranged in the accommodating component, a docking component arranged on the sealing plate, a guide component arranged in the accommodating component, and a pushing component arranged in the accommodating component; an anti-slip component, including an elastic component arranged on the pushing component, and a clamping component arranged on the accommodating component; a reinforcing component, including a pump air component arranged in the accommodating component, and an abutting component arranged on the pump air component.

[0007] As a preferred solution of the programmable DC power supply of the present invention, the accommodating component includes a mounting ring fixedly connected to the outer wall of the protective cover, the mounting ring is provided with a mounting groove, the mounting groove is provided with a rotating ring rotatably connected to the protective cover, and the rotating ring is provided with an annular groove extending to the inner side of the protective cover.

[0008] As a preferred solution of the programmable DC power supply of the present invention, wherein: the gear tooth assembly includes an adapter block fixedly connected to the sealing plate, the adapter block is rotatably connected to the inner wall of the annular groove through a rotating shaft, the adapter block is provided with an arc edge, a plurality of meshing teeth are fixedly connected to the arc edge, and a gear ring meshing with the meshing teeth is fixedly connected to the inner wall of the annular groove.

[0009] As a preferred solution of the programmable DC power supply of the present invention, the docking assembly includes a first arc edge arranged on a sealing plate, a second arc edge is arranged on the sealing plate, and the first arc edges on two adjacent sealing plates cooperate with the second arc edges.

[0010] As a preferred solution of the programmable DC power supply of the present invention, the guide assembly includes a first guide groove arranged on the inner wall of the rotating ring, an arc groove is connected to the first guide groove, a second guide groove is connected to the arc groove, and a guide rod slides in the first guide groove.

[0011] As a preferred solution of the programmable DC power supply of the present invention, wherein: the pushing component includes two openings arranged on the mounting ring, L-shaped bars are slidably connected in the two openings, a support ring is fixedly connected between the two L-shaped bars, a semicircular plate is fixedly connected to the rear end side wall of the L-shaped bar, the guide rod is fixedly connected to the semicircular plate, the outer side wall of the insulating head is fixedly connected to a dial ring that cooperates with the support ring, and the semicircular plate is elastically connected to the inner wall of the mounting groove through a first spring.

[0012] As a preferred solution of the programmable DC power supply of the present invention, the elastic component includes a limiting ring fixedly connected to a semicircular plate, an expansion groove is provided in the limiting ring, a slider is slidably connected in the expansion groove, the slider is elastically connected to the inner wall of the expansion groove through a second spring, an insert block is fixedly connected to the slider, and the insert block is provided with a bevel.

[0013] As a preferred solution of the programmable DC power supply of the present invention, wherein: the locking assembly includes a cylinder fixedly connected to the inner wall of the mounting groove, a first frustum fixedly connected to the cylinder, a second frustum slidably connected to the cylinder, the first frustum and the second frustum are symmetrically arranged, there is a gap between the first frustum and the second frustum, and the second frustum is elastically connected to the inner wall of the mounting groove through a third spring.

[0014] As a preferred solution of the programmable DC power supply of the present invention, the pump air component includes an arc-shaped air bag fixedly connected to the inner wall of the installation groove, and a pump air cavity is provided in the protective cover, and the pump air cavity is sealed and connected to the arc-shaped air bag through a pipeline.

[0015] As a preferred solution of the programmable DC power supply of the present invention, wherein: the abutment assembly includes a piston sealingly and slidably connected in the pump air cavity, the pump air cavity is provided with a guide port, a stop block fixedly connected to the piston is slidably connected in the guide port, an elastic rubber pad is fixedly connected to the outer end of the stop block, and the piston is elastically connected to the inner wall of the pump air cavity through a fourth spring.

[0016] The beneficial effects of the programmable DC power supply of the present invention are as follows: by setting a sealing plate and a rotating component, when the interface is not in use, the front side of the interface is automatically sealed to prevent dust from entering, and the sealing plate is directly set together with the protective cover, and there is no need to specifically find a plug. At the same time, when the interface needs to be used, only the connector needs to be pushed toward the interface to automatically rotate the sealing plate to open the interface, which is convenient to use. A reinforcing component is also provided, which can automatically reinforce the connector after the connector and the interface are plugged in to prevent the connector and the interface from loosening, thereby solving the problem that when there is no need to use multiple interfaces, dust easily enters some interfaces due to the lack of connector obstruction, and the next time the interface is needed, it is easy to cause connection abnormalities due to dust, thereby achieving the effect of dustproofing the unused interface and preventing the connector and the interface from loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0018] Figure 1 Schematic diagram of the external structure of the programmable DC power supply.

[0019] Figure 2 The first cross-sectional structural diagram of the mounting ring of the programmable DC power supply is shown.

[0020] Figure 3 It is a schematic diagram of the cross-sectional structure of the gear tooth assembly of the programmable DC power supply.

[0021] Figure 4 This is a schematic diagram of the external structure of the guide component of the programmable DC power supply.

[0022] Figure 5 It is a schematic diagram of the second cross-sectional structure of the mounting ring of the programmable DC power supply.

[0023] Figure 6 It is a schematic diagram of the cross-sectional structure of the anti-dropping component of the programmable DC power supply.

[0024] Figure 7 It is a schematic diagram of the cross-sectional structure of the reinforcement components of the programmable DC power supply.

[0025] Figure 8 for Figure 7 A schematic diagram of the enlarged structure of .

[0026] In the figure: 100, dustproof component; 101, DC power supply body; 102, interface; 103, protective cover; 104, connector; 105, insulating head; 106, wire; 107, sealing plate; 200, rotating component; 201, accommodating component; 201a, mounting ring; 201b, mounting groove; 201c, rotating ring; 201d, annular groove; 202, gear assembly; 202a, adapter block; 202b, rotating shaft; 202c, arc edge; 202d, meshing tooth; 202e, gear ring; 203, docking component; 203a, first arc edge; 203b, second arc edge; 204, guide component; 204a, first guide groove; 204b, arc groove; 204c, second guide groove; 204d, guide rod; 205, pushing component ; 205a, opening; 205b, L-shaped strip; 205c, support ring; 205d, semicircular plate; 205e, dial ring; 205f, first spring; 300, anti-slip component; 301, elastic component; 301a, limit ring; 301b, expansion groove; 301c, slider; 301d, second spring; 301e, plug block; 301f, bevel; 302, locking component; 302a, cylinder; 302b, first frustum; 302c, second frustum; 302d, third spring; 400, reinforcement component; 401, pump air component; 401a, arc-shaped air bag; 401b, pump air cavity; 401c, pipeline; 402, abutment component; 402a, piston; 402b, guide port; 402c, abutment block; 402d, fourth spring. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0028] Example 1, reference Figure 1 to Figure 7, which is the first embodiment of the present invention, and provides a programmable DC power supply, which can realize the automatic dustproofing of the interface 102 after the interface 102 and the connector 104 are separated, without the need to find a sealing plug to seal the effect, and includes a dustproof component 100, including a DC power supply body 101, an interface 102 arranged on the power supply body, a protective cover 103 arranged at the outer end of the interface 102, a connector 104 arranged at the outer end of the protective cover 103, an insulating head 105 arranged on the connector 104, a wire 106 arranged on the insulating head 105, and four sealing plates 107 arranged in the protective cover 103, and the four sealing plates 107 are rotated to seal the interface 102 is closed; the rotating component 200 includes a containing component 201 arranged at the outer end of the protective sleeve 103, a gear component 202 arranged in the containing component 201, a docking component 203 arranged on the sealing plate 107, a guide component 204 arranged in the containing component 201, and a pushing component 205 arranged in the containing component 201; the anti-slip component 300 includes an elastic component 301 arranged on the pushing component 205, and a locking component 302 arranged on the containing component 201; the reinforcing component 400 includes a pump air component 401 arranged in the containing component 201, and a contact component 402 arranged on the pump air component 401.

[0029] Specifically, a plurality of buttons are provided on the DC power supply body 101 for controlling the direct power output, a display screen is provided on the DC power supply body 101 for displaying the output data, and a plurality of interfaces 102 are provided, a protective cover 103 is fixedly connected to the interface 102, and a connector 104 is fixedly connected to the insulating head 105. This is the prior art and will not be elaborated here.

[0030] Furthermore, the accommodating assembly 201 includes a mounting ring 201a fixedly connected to the outer wall of the protective sleeve 103, a mounting groove 201b is provided in the mounting ring 201a, a rotating ring 201c rotatably connected to the protective sleeve 103 is provided in the mounting groove 201b, and an annular groove 201d extending to the inner side of the protective sleeve 103 is provided on the rotating ring 201c; the gear assembly 202 includes a transfer block 202a fixedly connected to the sealing plate 107, and the transfer block 202a is connected to the annular groove through a rotating shaft 202b. The inner wall of 201d is rotatably connected, an arcuate edge 202c is provided on the adapter block 202a, a plurality of meshing teeth 202d are fixedly connected on the arcuate edge 202c, a gear ring 202e meshing with the meshing teeth 202d is fixedly connected on the inner wall of the annular groove 201d; the docking assembly 203 includes a first arcuate edge 203a arranged on the sealing plate 107, a second arcuate edge 203b is provided on the sealing plate 107, and the first arcuate edges 203a and the second arcuate edges 203b on two adjacent sealing plates 107 cooperate with each other.

[0031] Among them, a gap is left between the rotating ring 201c and the inner wall of the installation groove 201b, and the first arc edge 203a and the second arc edge 203b on the two adjacent sealing plates 107 are abutted against each other to achieve the closure of the outer end of the interface 102, thereby achieving a dust-proof effect. The length of the protective cover 103 here is greater than the length of the interface 102, and the sealing plate 107 is completely on the front side of the interface 102.

[0032] Preferably, the guide assembly 204 includes a first guide groove 204a arranged on the inner wall of the rotating ring 201c, an arc groove 204b is connected to the first guide groove 204a, a second guide groove 204c is connected to the arc groove 204b, and a guide rod 204d slides in the first guide groove 204a; the pushing assembly 205 includes two openings 205a arranged on the mounting ring 201a, L-shaped strips 205b are slidably connected in the two openings 205a, a support ring 205c is fixedly connected between the two L-shaped strips 205b, a semicircular plate 205d is fixedly connected to the rear end side wall of the L-shaped strip 205b, the guide rod 204d is fixedly connected to the semicircular plate 205d, the outer side wall of the insulating head 105 is fixedly connected to a dial ring 205e that cooperates with the support ring 205c, and the semicircular plate 205d is elastically connected to the inner wall of the mounting groove 201b through a first spring 205f.

[0033] It should be noted that a gap greater than the thickness of the L-shaped bar 205b is left between the rotating ring 201c and the inner wall of the mounting groove 201b, so that the L-shaped bar 205b will not be stuck when it moves. The diameter of the dial ring 205e is greater than the diameter of the protective sleeve 103, so that when it moves toward the protective sleeve 103, it will not collide with the protective sleeve 103, thereby preventing the connector 104 from being unable to be inserted into the required position. At the same time, the support ring 205c cooperates with the dial ring 205e, and when the dial ring 205e moves toward the protective sleeve 103, it can push the support ring 205c to provide power for the movement of the L-shaped bar 205b. The first guide groove 204a and the second guide groove 204c are transverse grooves.

[0034] When in use, when the connector 104 is not inserted into the interface 102, the first arc edge 203a and the second arc edge 203b on the four sealing plates 107 abut against each other to seal the front side of the interface 102 and prevent dust. When the connector 104 needs to be connected, the pull ring 205e and the support ring 205c are first abutted against each other, and then the insulating head 105 is squeezed to make the pull ring 205e move toward the protective sleeve 103, so that the support ring 205c moves toward the protective sleeve 103. When the support ring 205c moves, it drives the L-shaped strip 205b to move toward the rear end, and the L The L-shaped strip 205b cooperates with the opening 205a to guide the movement of the insulating head 105, ensuring that the connector 104 is aligned with the interface 102. At the same time, when the L-shaped strip 205b moves backward, the semicircular plate 205d moves toward the rear end, so that the first spring 205f contracts. During the movement of the semicircular plate 205d toward the rear end, the guide rod 204d on the semicircular plate 205d first cooperates with the first guide groove 204a. When the connector 104 enters the protective sleeve 103, the guide rod 204d cooperates with the arc groove 204b, so that the rotating ring 201c The gear ring 202e rotates counterclockwise (from the direction of looking directly at the protective cover 103, the same below), so that the gear ring 202e rotates counterclockwise, driving the meshing teeth 202d to move, so that the four adapter blocks 202a rotate, driving the four sealing plates 107 to rotate, so that the shielding of the interface 102 is released. When the guide rod 204d moves to the connection between the second guide groove 204c and the arc groove 204b, the shielding of the interface 102 is completely released, and the sealing plate 107 moves into the annular groove 201d, and then continues to squeeze the insulating head 105, and the guide rod 204d is in the second guide groove 204c. When the connector 104 leaves the interface 102, the connector 104 can be pulled out in the reverse direction to make the first arc edge 203a on the four sealing plates 107 cooperate with the first arc edge 203b to seal the front side of the interface 102 and prevent dust. There is damping between the connector 104 and the interface 102 to prevent the semicircular plate 205d from automatically resetting under the action of the first spring 205f.

[0035] In summary, the four sealing plates 107 and the rotating component 200 automatically rotate the four sealing plates 107 to open the front side of the connector 104 during the process of inserting the connector 104 into the interface 102, which will not affect the insertion of the connector 104. When the connector 104 leaves the interface 102, the four sealing plates 107 can automatically form a closed interface 102 to achieve dustproofing of the interface 102, thereby facilitating use without having to find a sealing plug.

[0036] Example 2, reference Figure 1 to Figure 6, which is the second embodiment of the present invention. Different from the previous embodiment, this embodiment provides a programmable DC power supply anti-drop component 300, which solves the problem of looseness between the dustproof connector 104 and the interface 102. It includes an elastic component 301, including a limit ring 301a fixedly connected to the semicircular plate 205d, and an expansion groove 301b is provided in the limit ring 301a. A slider 301c is slidably connected in the expansion groove 301b. The slider 301c is elastically connected to the inner wall of the expansion groove 301b through a second spring 301d. The slider 30 1c is fixedly connected with an insert block 301e, and the insert block 301e is provided with a bevel 301f. The locking assembly 302 includes a cylinder 302a fixedly connected to the inner wall of the mounting groove 201b, a first truncated cone 302b is fixedly connected to the cylinder 302a, a second truncated cone 302c is slidably connected to the cylinder 302a, the first truncated cone 302b and the second truncated cone 302c are symmetrically arranged, a gap is provided between the first truncated cone 302b and the second truncated cone 302c, and the second truncated cone 302c is elastically connected to the inner wall of the mounting groove 201b through a third spring 302d.

[0037] Specifically, the gap between the first truncated cone 302b and the second truncated cone 302c is larger than the width of the insert block 301e, thereby ensuring that the insert block 301e can be accommodated. The setting of the bevel 301f prevents the insert block 301e from getting stuck with the first truncated cone 302b and the second truncated cone 302c. At the same time, the second spring 301d is elastic enough to ensure that there is sufficient pressure to drive the second truncated cone 302c to slide when the insert block 301e pushes against the second truncated cone 302c to drive the second truncated cone 302c to move.

[0038] When in use, while the semicircular plate 205d moves toward the rear end, it can drive the limiting ring 301a to move toward the cylinder 302a. When the guide rod 204d moves into the second guide groove 204c, the cylinder 302a just moves into the limiting ring 301a. As the semicircular plate 205d continues to move, the plug block 301e abuts against the side wall of the first truncated cone 302b, and the bevel 301f cooperates with the first truncated cone 302b to avoid jamming. When the plug block 301e abuts against the side wall of the first truncated cone 302b, the plug block 301e can move toward the second spring 301d, so that the slider 301c moves in the direction of the second spring 301d, compressing the second spring 301d. When the joint 104 is completely matched with the interface 102 When the connector 104 and the interface 102 are closed, the plug block 301e completely moves to the rear end of the first truncated cone 302b. At this time, under the action of the second spring 301d, the slider 301c is reset, driving the plug block 301e to reset, so that the non-beveled edge 301f of the plug block 301e is against the first truncated cone 302b, preventing the plug block 301e from resetting forward, so that the limit ring 301a cannot be reset forward, and the semicircular plate 205d cannot be reset forward, thereby ensuring the stability of the joint 104 and the interface 102, and preventing the joint 104 and the interface 102 from loosening. When the joint 104 and the interface 102 need to be disassembled, it is only necessary to move the L-shaped strip 205b again. At this time, the semicircular plate 205d continues to move backward. In this process, the beveled edge 301f of the plug block 301e and the second truncated cone 302b are pressed against each other. The truncated cone 302c cooperates with the plug block 301e to move toward the second spring 301d, and the second spring 301d is compressed through transmission. When the plug block 301e abuts against the side wall of the second truncated cone 302c, the first spring 205f cannot continue to be compressed. At this time, the L-shaped strip 205b is loosened. Under the action of the first spring 205f, the semicircular plate 205d moves forward, causing the limit ring 301a to move forward, causing the plug block 301e to move forward. At this time, the plug block 301e abuts against the side wall of the second truncated cone 302c, driving the second truncated cone 302c to move forward, and the third spring 302d is extended. Here, due to the sufficient elasticity of the second spring 301d, while the plug block 301e supports the second truncated cone 302c and drives the second truncated cone 302c to move, it is ensured that Sufficient pressure drives the second truncated cone 302c to slide. When the front end surface of the second truncated cone 302c abuts against the rear end surface of the first truncated cone 302b, the second truncated cone 302c cannot continue to move forward. At this time, the plug block 301e continues to move forward. The first spring 205f here is elastic enough to ensure that the movement of the plug block 301e will not be blocked. The plug block 301e moves along the side wall of the second truncated cone 302c to the side wall of the first truncated cone 302b, and finally continues to reset forward. Then, the second truncated cone 302c is reset under the action of the third spring 302d for next use. When the L-shaped strip 205b resets forward, the support ring 205c pushes the dial ring 205e to move, which can drive the insulating head 105 to move outward, and then drive the connector 104 to leave the interface 102.Of course, if the connector 104 and the interface 102 are tightly engaged, the connector 104 can also be removed by pulling the insulating head 105 by hand.

[0039] In summary, by setting the anti-drop component 300, when the connector 104 is inserted into the interface 102, the position of the semicircular plate 205d can be limited, thereby preventing the L-shaped strip 205b from moving forward and preventing the connector 104 and the interface 102 from loosening due to transmission, thereby ensuring the stability of the connection between the connector 104 and the interface 102.

[0040] Example 3, reference Figures 1 to 8 , which is the third embodiment of the present invention. Different from the previous embodiment, this embodiment provides a reinforcing component 400 of a programmable DC power supply, which solves the problem of how to further prevent the connector 104 and the interface 102 from loosening. It includes a pump air component 401, including an arc-shaped air bag 401a fixedly connected to the inner wall of the mounting groove 201b, a pump air cavity 401b is provided in the protective sleeve 103, and the pump air cavity 401b is sealed and connected to the arc-shaped air bag 401a through a pipeline 401c. The abutment component 402 includes a piston 402a sealed and slidably connected to the pump air cavity 401b, a guide port 402b is provided on the pump air cavity 401b, and a stop block 402c fixedly connected to the piston 402a is slidably connected in the guide port 402b, and an elastic rubber pad is fixedly connected to the outer end of the stop block 402c, and the piston 402a is elastically connected to the inner wall of the pump air cavity 401b through a fourth spring 402d. Specifically, the inner wall of the arc-shaped airbag 401a does not contact the rotating ring 201c, so as to avoid wear caused by friction of the arc-shaped airbag 401a when the rotating ring 201c rotates. The length of the pipe 401c on the arc-shaped airbag 401a is sufficient, and the pipe 401c will not be pulled when the rotating ring 201c moves. The setting of the semi-circular ball avoids the joint 104 from being too tightly abutted, causing the joint 104 to be unable to move when inserted into the interface 102.

[0041] When in use, when the semicircular plate 205d moves backward and slowly moves toward the arc-shaped airbag 401a, when the guide rod 204d slides in the second guide groove 204c, the semicircular plate 205d will squeeze the arc-shaped airbag 401a, so that the gas in the arc-shaped airbag 401a is pumped into the pump air chamber 401b through the pipe 401c, so that the piston 402a moves, thereby moving the block 402c, and moving the elastic rubber pad. The elastic rubber pad is against the side wall of the joint 104. Since the elastic rubber pad is elastic, when the joint 104 moves, it will not cause the joint 104 to be unable to move. When the joint 104 is fully matched with the interface 102, the elastic rubber pad is against the side wall of the joint 104, applying resistance to the movement of the joint 104, avoiding the joint 104 from automatically loosening, and further ensuring the stability of the connection between the joint 104 and the interface 102.

[0042] In summary, by setting the reinforcing component 400, when the semicircular plate 205d moves, it can also squeeze the arc-shaped airbag 401a, and by pumping air, the elastic rubber pad is pressed against the side wall of the joint 104, applying resistance to the movement of the joint 104, preventing the joint 104 from loosening automatically, and making the connection between the joint 104 and the interface 102 more stable.

[0043] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A programmable DC power supply, characterized in that: include, The dustproof component (100) comprises a DC power supply body (101), an interface (102) arranged on the power supply body, a protective cover (103) arranged at the outer end of the interface (102), a connector (104) arranged at the outer end of the protective cover (103), an insulating head (105) arranged on the connector (104), a wire (106) arranged on the insulating head (105), and four sealing plates (107) arranged in the protective cover (103), wherein the four sealing plates (107) are rotated to seal the interface (102); The rotating component (200) comprises a receiving assembly (201) arranged at the outer end of the protective sleeve (103), a gear assembly (202) arranged in the receiving assembly (201), a docking assembly (203) arranged on the sealing plate (107), a guiding assembly (204) arranged in the receiving assembly (201), and a pushing assembly (205) arranged in the receiving assembly (201); The anti-drop component (300) comprises an elastic component (301) arranged on the pushing component (205) and a locking component (302) arranged on the containing component (201); The reinforcing component (400) comprises a pumping component (401) arranged in the containing component (201), and an abutting component (402) arranged on the pumping component (401).

2. The programmable DC power supply according to claim 1, wherein: The accommodating assembly (201) comprises a mounting ring (201a) fixedly connected to the outer wall of the protective sleeve (103); a mounting groove (201b) is provided in the mounting ring (201a); a rotating ring (201c) rotatably connected to the protective sleeve (103) is provided in the mounting groove (201b); and an annular groove (201d) extending to the inner side of the protective sleeve (103) is provided on the rotating ring (201c).

3. The programmable DC power supply according to claim 2, wherein: The gear assembly (202) comprises an adapter block (202a) fixedly connected to the sealing plate (107); the adapter block (202a) is rotatably connected to the inner wall of the annular groove (201d) via a rotating shaft (202b); an arcuate edge (202c) is provided on the adapter block (202a); a plurality of meshing teeth (202d) are fixedly connected to the arcuate edge (202c); and a gear ring (202e) meshing with the meshing teeth (202d) is fixedly connected to the inner wall of the annular groove (201d).

4. The programmable DC power supply according to claim 3, wherein: The docking assembly (203) comprises a first arc edge (203a) arranged on the sealing plate (107), a second arc edge (203b) is arranged on the sealing plate (107), and the first arc edges (203a) and the second arc edges (203b) on two adjacent sealing plates (107) cooperate with each other.

5. The programmable DC power supply according to claim 4, characterized in that: The guide assembly (204) comprises a first guide groove (204a) arranged on the inner wall of the rotating ring (201c), the first guide groove (204a) being connected to an arc groove (204b), the arc groove (204b) being connected to a second guide groove (204c), and a guide rod (204d) slidingly arranged in the first guide groove (204a).

6. The programmable DC power supply according to claim 5, characterized in that: The pushing assembly (205) comprises two openings (205a) arranged on the mounting ring (201a), L-shaped strips (205b) are slidably connected in the two openings (205a), a support ring (205c) is fixedly connected between the two L-shaped strips (205b), a semicircular plate (205d) is fixedly connected to the rear end side wall of the L-shaped strip (205b), the guide rod (204d) is fixedly connected to the semicircular plate (205d), a dial ring (205e) matched with the support ring (205c) is fixedly connected to the outer side wall of the insulating head (105), and the semicircular plate (205d) is elastically connected to the inner wall of the mounting groove (201b) via a first spring (205f).

7. The programmable DC power supply according to claim 6, characterized in that: The elastic component (301) comprises a limiting ring (301a) fixedly connected to the semicircular plate (205d), an expansion groove (301b) being provided in the limiting ring (301a), a slider (301c) being slidably connected in the expansion groove (301b), the slider (301c) being elastically connected to the inner wall of the expansion groove (301b) via a second spring (301d), an insert block (301e) being fixedly connected to the slider (301c), and a bevel (301f) being provided on the insert block (301e).

8. The programmable DC power supply according to claim 7, wherein: The snap-fit ​​assembly (302) comprises a cylinder (302a) fixedly connected to the inner wall of the mounting groove (201b), a first truncated cone (302b) fixedly connected to the cylinder (302a), a second truncated cone (302c) slidably connected to the cylinder (302a), the first truncated cone (302b) and the second truncated cone (302c) being symmetrically arranged, a gap being provided between the first truncated cone (302b) and the second truncated cone (302c), and the second truncated cone (302c) being elastically connected to the inner wall of the mounting groove (201b) via a third spring (302d).

9. The programmable DC power supply according to claim 7 or 8, characterized in that: The pump air assembly (401) comprises an arc-shaped air bag (401a) fixedly connected to the inner wall of the mounting groove (201b), and a pump air cavity (401b) is provided in the protective sleeve (103). The pump air cavity (401b) is sealed and connected to the arc-shaped air bag (401a) via a pipe (401c).

10. The programmable DC power supply according to claim 9, wherein: The abutment assembly (402) comprises a piston (402a) sealingly and slidably connected in a pump air cavity (401b); a guide opening (402b) is provided on the pump air cavity (401b); a stop block (402c) fixedly connected to the piston (402a) is slidably connected in the guide opening (402b); an elastic rubber pad is fixedly connected to the outer end of the stop block (402c); and the piston (402a) is elastically connected to the inner wall of the pump air cavity (401b) via a fourth spring (402d).

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