[0042] The following describes the technical solutions of the present invention clearly and completely with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
[0043] Such as figure 1 , figure 2 with image 3 As shown, the high-voltage circuit breaker with self-locking function provided by the present invention includes: a lower casing 5 and an upper casing 31 matching the lower casing 5, the lower casing 5 and the upper casing 31 are connected to form a complete The four corners of the housing, the lower housing 5 and the upper housing 31 are connected by threads.
[0044] The upper and lower ends of the lower casing 5 are provided with two symmetrical installation grooves 27. The upper installation groove 27 of the lower casing 5 is symmetrical with the lower casing 5 installation groove 27, and the four installation grooves 27 pass through. After the lower housing 5, the two mounting slots 27 at the upper end of the lower housing 5 are used to install the output wire 13, the two mounting slots 27 located at the lower end of the lower housing 5 are used to install the input wire 30, and the inside of the mounting slot 27 is installed There is a protective cover 16 penetrated by the output lead 13 and the input lead 30, and the protective cover 16 is a rubber protective cover, which can protect the output lead 13 and the input lead 30 and improve their service life.
[0045] The upper and lower sides of the lower shell 5 are respectively symmetrically installed with a first fixed horizontal plate 33 and a second fixed horizontal plate 34. The first fixed horizontal plate 33 is symmetrically provided with two grooves for installing two first Connecting the guide rod 12, one side of the groove opening of the first fixing horizontal plate 33 is detachably fixed to the first fixing plate 14 so that the groove of the first fixing horizontal plate 33 and the first fixing plate 14 A first tightening space is formed to fix the first connecting guide rod 12; the specific first fixed horizontal plate 33 and the first fixing plate 14 are fixed by screws; the first connecting guide rod 12 is close to the top of the lower housing 5. One end is correspondingly connected to the output wire 13 on the same side, and the other end of the first connecting rod 12 is respectively installed with a second contact 15.
[0046] Two grooves are symmetrically provided on the second fixed horizontal plate 34 for mounting the third connecting guide rod 29, and the second fixed plate 28 is detachably fixed on one side of the groove opening of the second fixed horizontal plate 34 , So that a second tightening space is formed between the groove of the second fixed horizontal plate 34 and the second fixed plate 28 to fix the third connecting guide rod 29; specifically, the second fixed horizontal plate 34 and the second fixed plate 28 They are fixed by screws; the ends of the two third connecting rods 29 facing the bottom of the lower casing 5 are respectively connected to an input wire 30.
[0047] Continue to refer figure 1 with figure 2 , The middle of the lower housing 5 is fixed with a vertical guide rod 32, the guide rod 32 is a rectangular parallelepiped structure, the upper and lower ends of the guide rod 32 are installed with a mounting block 26, the middle of the guide rod 32 is movably sleeved with a sliding plate 35 , Used to prevent the sliding plate 35 from deviating during movement; the outer side of the guide rod 32 located below the sliding plate 35 is movably sleeved with the first spring 2; the left and right sides of the sliding plate 35 are fixedly provided with a second connecting guide penetrating the slider 35 Rod 24, and the two second connecting guide rods 24 are symmetrical to the two first connecting guide rods 12; the upper end of the second connecting guide rod 24 is provided with a first contact 11, a first contact 11 and a second contact 15 are in contact; an elastic wire 1 is installed between the lower end of the second connecting guide rod 24 and the third connecting guide rod 29 on the same side. figure 1 with figure 2 When the sliding plate 35 in the middle is stationary (the high-voltage circuit breaker is in a normal working state), the first contact 11 and the second contact 15 are in contact.
[0048] Further reference figure 2 , image 3 with Figure 4 A fixed plate 10 is installed at the left end of the sliding plate 35, and the sliding plate 35 and the fixed plate 10 are formed as an integral structure, which can enhance the connection strength and improve the stability of use. The upper part of the fixing plate 10 is provided with a fixing hole 9, and a fixing device matching the fixing plate 10 is installed on the left side of the lower housing 5. When the sliding plate 35 slides on the guide rod 32 to a certain position, the sliding plate 35 can be fixed.
[0049] The fixing device includes a U-shaped plate 8 and a turntable 6. The two ends of the opening of the U-shaped plate 8 are fixedly connected to the inner left side of the lower shell 5, and the open end of the U-shaped plate 8 is higher than the height of the sliding plate 35 at rest. 8 The other end of the opening is lower than the height of the sliding plate 35 at rest. The U-shaped plate 8 includes a bottom plate 81 and side plates 82 respectively connected to both ends of the bottom plate 81. The two side plates 82 and the bottom plate 81 form a U-shaped plate 8. The middle of the bottom plate 81 is penetrated with a pin 39 that matches the fixing hole 9 One end of the plunger 39 passes through the bottom plate 81, and the other end of the plunger 39 is installed with a limit plate 38. Two connected second springs 37 are provided between the two sides of the limit plate 38 and the bottom plate 81. The second spring One end of the second spring 37 is fixedly connected to the two ends of the limiting plate 38 facing the bottom plate 81, and the other end of the second spring 37 is fixedly connected to the bottom plate 81. The inner side wall of the lower shell 5 is provided with an opening, and an upright turntable 6 is provided at the opening. A connecting rod 36 is connected to the edge of the turntable 6 to rotate toward the limit plate 38. The other end of the connecting rod 36 is connected to the plug through a pin. The other end of the rod 39 is rotatably connected; an edge of the turntable 6 facing the lower housing 5 is fixedly installed with a pull rod 7, and the other end of the pull rod 7 extends out of the lower housing 5 through the opening. When the plunger 39 is stuck in the fixing hole 9, by pulling the pull rod 7, the turntable 6 drives the plunger 39 away from the fixing hole 9, so that the sliding plate 35 returns to its static state.
[0050] Further reference figure 2 , A pushing device is installed on the right side of the lower shell 5, and a transformer 25 is installed in the pushing device. When the voltage of the transformer 25 is too high, the sliding plate 35 is pushed down and fixed by the fixing device to realize the self-locking function.
[0051] The pushing device includes a transformer 25 and an iron core 18 fixedly connected to the lower casing 5. The input end of the transformer 25 is connected to the input wire 30, and the iron core 18 is arranged above the transformer 25. A coil 17 is wound on the outside of the iron core 18. Both ends of 17 are connected to the output end of the transformer 25.
[0052] The pushing device also includes a rotating rod 19, the middle of the rotating rod 19 is rotatably connected with the inner wall of the front of the lower housing 5; the middle of the sliding plate 35 is provided with a first push head 3, and the left end of the rotating rod 19 is provided with the first push head 3. Match the first push slot 4. The pushing device also includes a sliding groove 23 arranged on the inner wall of the upper housing 31. A slider 20 is installed inside the sliding groove 23. A second pusher 22 is fixedly installed on the side of the slider 20 facing the upper housing 31, and a rotating rod The right end of 19 is provided with a second pushing groove 21 matching the second pushing head 22. When the slider 20 slides up and down in the sliding groove 23, the second push head 22 is driven to slide in the second push groove 21 to rotate the rotating rod 19. When the right end of the rotating rod 19 moves upward, the left end of the rotating rod 19 moves downward ; When the first push head 3 slides to the bottom end of the first push groove 4, the first push groove 4 will drive the first push head 3 and the slide plate 35 to slide down, and when they slide down to a certain position, the plunger 39 is inserted into the slide plate 35 In the fixing hole 9, the sliding plate 35 is thereby clamped, and has a self-locking function.
[0053] The working principle of the high-voltage circuit breaker with self-locking function of the present invention is described in detail, so that those skilled in the art can better understand the present invention:
[0054] When in use, when the voltage output by the transformer 25 is too large, the voltage output by the coil 17 is too large, which makes the magnetism of the iron core 18 stronger, and the iron core 18 attracts the slider 20 to move upward in the chute 23, and the slider 20 drives the first The second push head 22 moves upward, and the upward movement of the second push head 22 drives the end of the second push groove 21 to move upward, that is, drives the rotating rod 19 to rotate counterclockwise. When the rotating rod 19 rotates to a certain position, the first push groove 4 The bottom of the groove (the other end of the rotating rod 19) clamps the first push head 3. The rotating rod 19 continues to rotate counterclockwise. The rotating rod 19 clamps the first push head 3 through the first push groove 4 to drive the sliding plate 35 on the guide rod 32 Move up and down to separate the first contact 11 and the second contact 15 to realize a circuit break; at the same time, the sliding plate 35 drives the fixed plate 10 to move down, and when the fixing hole 9 moves to be flush with the plunger 39, the plunger 39 is inserted and fixed Hole 9 to fix the fixed plate 10, that is, to fix the slide plate 35, so as to realize the self-locking function; when unlocking, push the lever 7 upward, the lever 7 drives the turntable 6 to rotate, the turntable 6 drives the connecting rod 36 to move left, and the connecting rod 36 drives Drive the plunger 39 to move to the left to separate the plunger 39 from the fixing hole 9. The slide plate 35 is restored to its original state through the first spring 2, that is, the normal state. When unlocking, it needs to be manually unlocked to prevent the transformer 25 from being output voltage after the automatic unlocking. The excessively large state prevents the change from the open circuit to the path, and has strong practicability, which greatly improves the safety of the circuit breaker and is worthy of popularization. It can be seen that the invented high-voltage circuit breaker has sensitive action, high reliability, simple structure and low manufacturing cost.
[0055] In summary, the high-voltage circuit breaker with self-locking function of the present invention has simple structure, convenient use, good use effect and high stability.
[0056] What has been disclosed above are only specific implementations of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or modifications within the technical scope disclosed in the present invention. It should be covered within the protection scope of the present invention.
