Switching power supply power-off protection device

Abstract

The utility model discloses a switching power supply power-off protection device, which relates to the technical field of circuits and comprises a protection device main body, wiring holes are arranged at two ends of the protection device main body, conductive contacts are fixedly arranged on one sides of the interiors of the wiring holes, and grooves are arranged on one sides, far away from the conductive contacts, of the interiors of the wiring holes. A rotating rod is rotatably arranged on the inner side of the groove, the rod wall of the rotating rod is fixedly sleeved with a cam, fixing blocks are fixedly arranged on the outer walls of the two sides of the protection device body, the outer walls of the fixing blocks are movably sleeved with lantern rings, and the inner walls of the sides, away from the cam, of the lantern rings abut against the outer walls of the fixing blocks; the two ends of the rotating rod extend to the outer side of the groove and are fixedly connected with connecting rods, and one ends of the connecting rods on the two sides are fixedly connected with the corresponding lantern rings. And a cavity is formed in the fixed block. According to the utility model, lines can be disassembled and assembled without the help of tools, and the working efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuits, in particular to a switching power supply power failure protection device. Background Art

[0002] The power switch is used to control the switch tube through the circuit to achieve high-speed on and off. The direct current is converted into high-frequency alternating current and provided to the transformer for transformation, thereby generating the required one or more sets of voltages. Nowadays, there are more and more household appliances, and the amount of electricity required is increasing, which will cause the circuit to overload and cause danger. Air switches are now commonly used to protect the circuit from overload power-off.

[0003] Among them, announcement number CN211428110U discloses an overload power-off protection structure for a switching power supply, which relates to the field of circuit technology, including: a switch body, a protective cover movably connected to the front of the switch body, and a switch is arranged inside the protective cover. There are still defects in this technical solution:

[0004] In this technical solution, bolts are used to compress the circuits and contacts to achieve wiring. Therefore, when the wiring is removed and repaired in the junction box, tools need to be removed. When tools are not carried, it is difficult to perform wiring and removal operations, which is inconvenient to use. Utility Model Content

[0005] In view of the above problems existing in the existing overload power-off protection structure for switching power supplies, the present utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide a switching power supply power-off protection device, which solves the problem that in the overload power-off protection structure used for the switching power supply in the prior art, bolts are used to compress the circuit and the contact to achieve wiring. Therefore, when the wiring is removed and repaired in the junction box, tools need to be removed. When the tools are not carried, it is difficult to carry out wiring and removal operations, which is inconvenient to use.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A switching power supply power-off protection device, comprising a protection device body, both ends of the protection device body are provided with wiring holes, a conductive contact is fixedly arranged on one side of the wiring hole, a groove is provided inside the wiring hole and on a side away from the conductive contact, a rotating rod is rotatably arranged on the inner side of the groove, a cam is fixedly sleeved on the rod wall of the rotating rod, fixed blocks are fixedly arranged on the outer walls of both sides of the protection device body, a collar is movably sleeved on the outer wall of the fixing block, the inner wall of the collar away from the cam is in conflict with the outer wall of the fixing block, both ends of the rotating rod extend to the outside of the groove and are fixedly connected with connecting rods, and one end of the connecting rods on both sides is fixedly connected to the corresponding collars;

[0009] A cavity is provided inside the fixing block, and a limiting mechanism for limiting the movement of the ring is arranged inside the cavity.

[0010] Preferably, the limiting mechanism includes a stopper and a clamping block, wherein the stopper is slidably arranged inside the cavity, the clamping block is fixedly arranged on one side of the stopper, one end of the clamping block extends to the outside of the cavity, and the outer end of the clamping block is in conflict with the side of the ring away from the main body of the protective device.

[0011] Preferably, a spring is fixedly provided on one side of the stopper away from the clamping block, and the other end of the spring is fixedly connected to the inner wall of the cavity.

[0012] Preferably, a slope is provided on a side of the block away from the protection device body.

[0013] Preferably, the longitudinal sections of the block and the cavity are both rectangular.

[0014] Preferably, the cam is a rubber block.

[0015] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0016] The utility model connects the connected line to the wire plug hole and then rotates the rotating rod to rotate the cam. During the rotation of the cam, the connected line is gradually squeezed so that the connected line is tightly pressed against the conductive contact. At the same time, the collar is rotated and sleeved on the corresponding fixed block with the rotating rod as the axis until the inner wall of the collar away from the cam abuts against the outer wall of the fixed block. At this time, one end of the clamping block moves out of the cavity under the elastic force of the spring, and the side of the clamping block close to the main body of the protection device abuts against the side of the collar away from the main body of the protection device, thus completing the limiting of the rotating rod and further realizing the limiting of the cam, that is, realizing the installation of the line without the aid of tools, which can improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 This is a structural schematic diagram of a switching power supply power-off protection device proposed by the utility model;

[0019] Figure 2 for Figure 1 Schematic diagram of the internal structure;

[0020] Figure 3 for Figure 2Schematic diagram of the enlarged structure of part A in the middle.

[0021] Description of reference numerals:

[0022] 1. Main body of the protective device; 2. Rotating rod; 3. Fixed block; 4. Spring; 5. Ring; 6. Connecting rod; 7. Cam; 8. Conductive contact; 9. Stop block; 10. Card block. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0024] The utility model embodiment discloses a switching power supply power failure protection device.

[0025] Reference Figure 1-3 A switching power supply power-off protection device comprises a protection device body 1, both ends of the protection device body 1 are provided with wiring holes, a conductive contact 8 is fixedly arranged on one side of the wiring hole, a groove is provided inside the wiring hole and on the side away from the conductive contact 8, a rotating rod 2 is rotatably arranged on the inner side of the groove, a cam 7 is fixedly sleeved on the rod wall of the rotating rod 2, the cam 7 is a rubber block, and the connected line is prevented from being crushed as much as possible, the outer walls of both sides of the protection device body 1 are fixedly provided with fixed blocks 3, the outer wall of the fixed block 3 is movably sleeved with a collar 5, the inner wall of the collar 5 away from the cam 7 is in conflict with the outer wall of the fixed block 3, both ends of the rotating rod 2 extend to the outside of the groove and are fixedly connected with connecting rods 6, and one end of the connecting rods 6 on both sides is fixedly connected to the corresponding collar 5.

[0026] Reference Figure 1-3 A cavity is provided inside the fixed block 3, and a limiting mechanism for limiting the movement of the collar 5 is provided inside the cavity. The limiting mechanism includes a stopper 9 and a clamping block 10. The stopper 9 is slidably arranged inside the cavity, and the clamping block 10 is fixedly arranged on one side of the stopper 9. One end of the clamping block 10 extends to the outside of the cavity, and the outer end of the clamping block 10 conflicts with the side of the collar 5 away from the protective device body 1. A spring 4 is fixedly provided on the side of the stopper 9 away from the clamping block 10, and the other end of the spring 4 is fixedly connected to the inner wall of the cavity, so that the stopper 9 drives the clamping block 10 to reset. The longitudinal sections of the stopper 9 and the cavity are both rectangular, so that the stopper 9 cannot rotate, that is, it can slide stably.

[0027] Reference Figure 1-3 The block 10 has an inclined surface on one side away from the protective device body 1 , so that the block 10 can be squeezed into the cavity when the ring 5 is sleeved on the fixing block 3 , so that the ring 5 can be smoothly sleeved on the outer wall of the fixing block 3 .

[0028] In the utility model, when in use, the connected line is connected to the wire plug hole, and then the rotating rod 2 is rotated to rotate the cam 7. During the rotation of the cam 7, the connected line is gradually squeezed so that the connected line is tightly pressed against the conductive contact 8. At the same time, the ring 5 is rotated and sleeved on the corresponding fixed block 3 with the rotating rod 2 as the axis, until the inner wall of the ring 5 away from the cam 7 abuts against the outer wall of the fixed block 3. At this time, one end of the block 10 moves out of the cavity under the elastic force of the spring 4, and the side of the block 10 close to the protective device body 1 abuts against the side of the ring 5 away from the protective device body 1, that is, the limiting of the rotating rod 2 is completed, and then the limiting of the cam 7 is realized, that is, the installation of the line is realized without the help of tools. The above steps are reversed to realize the disassembly of the line without the help of tools, which can greatly improve the work efficiency.

[0029] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A switching power supply power failure protection device, comprising a protection device body (1), characterized in that: Both ends of the protective device body (1) are provided with wiring holes, a conductive contact (8) is fixedly arranged on one side of the wiring hole, a groove is arranged inside the wiring hole and on the side away from the conductive contact (8), a rotating rod (2) is rotatably arranged inside the groove, a cam (7) is fixedly sleeved on the rod wall of the rotating rod (2), fixed blocks (3) are fixedly arranged on the outer walls of both sides of the protective device body (1), a collar (5) is movably sleeved on the outer wall of the fixing block (3), the inner wall of the collar (5) away from the cam (7) is in contact with the outer wall of the fixing block (3), both ends of the rotating rod (2) extend to the outside of the groove and are fixedly connected to connecting rods (6), and one end of the connecting rods (6) on both sides is fixedly connected to the corresponding collar (5); A cavity is provided inside the fixing block (3), and a limiting mechanism for limiting the movement of the sleeve ring (5) is provided inside the cavity.

2. The switching power supply power-off protection device according to claim 1, characterized in that: The limiting mechanism comprises a stopper (9) and a clamping block (10), wherein the stopper (9) is slidably arranged inside the cavity, and the clamping block (10) is fixedly arranged on one side of the stopper (9), and one end of the clamping block (10) extends to the outside of the cavity, and the outer end of the clamping block (10) contacts the side of the ring (5) away from the protective device body (1).

3. The switching power supply power-off protection device according to claim 2, characterized in that: A spring (4) is fixedly arranged on one side of the stopper (9) away from the clamping block (10), and the other end of the spring (4) is fixedly connected to the inner wall of the cavity.

4. The switching power supply power-off protection device according to claim 2, characterized in that: A slope is provided on the side of the clamping block (10) away from the protection device body (1).

5. The switching power supply power-off protection device according to claim 2, characterized in that: The longitudinal sections of the stopper (9) and the cavity are both rectangular.

6. The switching power supply power-off protection device according to claim 1, characterized in that: The cam (7) is a rubber block.

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