Contact-free amplification tripping mechanism

Abstract

The utility model discloses a non-contact amplification tripping mechanism, which is arranged on a shell and comprises a tripper, a spring, a spring, a spring, a spring, a spring, a spring, a spring, a spring, a spring and a spring, and is characterized in that the spring is provided with an ejector pin; the operating mechanism comprises a jump pin, a lock catch in hasp connection with the jump pin, a rotating plate, an energy storage piece, a U-shaped connecting rod and a handle, the U-shaped connecting rod is connected with the jump pin and the handle, the jump pin rotates relative to the rotating plate and drives the rotating plate to rotate, the lock catch rotates relative to the rotating plate, and the energy storage piece is connected with the U-shaped connecting rod. The energy storage piece gives restoring force to the rotating plate; through the arrangement of the jump pin, the lock catch, the rotating plate and the energy storage piece, an amplification structure is formed, and when the ejector pin acts, only a small force is needed to be converted into a strong force to drive the body switch to realize tripping. The structure is simple, the number of parts is small, installation is convenient, production cost can be reduced, and universality is high.

Description

Technical Field

[0001] The utility model relates to the field of electrical technology, in particular to a contactless amplification and tripping mechanism. Background Art

[0002] Circuit breakers, especially small circuit breakers, need to expand their functions in certain situations. In this case, circuit breaker accessories are usually spliced ​​with circuit breakers to achieve expanded functions. Circuit breaker accessories are equipped with a tripping mechanism and an operating mechanism. The tripping and opening effects are achieved through the cooperation of the tripping mechanism and the operating mechanism. Circuit breaker accessories do not have moving contacts or static contacts.

[0003] In the prior art, the operating mechanism installed on the circuit breaker accessories is driven by multiple stages. During the transmission process, the tripping mechanism requires a large force to drive the operating mechanism to operate, and there are certain requirements for the performance of the tripping device of the tripping mechanism. How to reduce the requirements of the tripping device so that a small force can drive the operating mechanism to achieve the opening operation has become an urgent problem that technicians in this field need to solve. Utility Model Content

[0004] Therefore, the technical problem to be solved by the utility model is how to drive the operating mechanism to realize the opening operation by a small force. To this end, a contactless amplification tripping mechanism is installed on a housing, which includes:

[0005] A tripper, wherein the tripper is provided with an ejector pin, and the ejector pin cooperates with a lock of the operating mechanism;

[0006] The operating mechanism includes a jump buckle, a lock buckle connected to the jump buckle, a rotating plate, an energy storage component, a U-shaped connecting rod and a handle, the U-shaped connecting rod connects the jump buckle and the handle, the jump buckle rotates relative to the rotating plate and the jump buckle drives the rotating plate to rotate, the lock buckle rotates relative to the rotating plate, and the energy storage component provides a restoring force to the rotating plate.

[0007] The energy storage component is a torsion spring, one end of the energy storage component is against the rotating plate, and the other end of the energy storage component is matched with the shell.

[0008] The housing is provided with a rotating shaft, the energy storage component is sleeved on the rotating shaft, the rotating plate is sleeved on the rotating shaft, and the energy storage component is located below the rotating plate.

[0009] The rotating plate is provided with a linkage portion, the shell is provided with a through hole, and the linkage portion passes through the through hole and extends to the outside.

[0010] The lock buckle comprises a first leg and a second leg, the first leg is connected to the jump buckle, and the second leg is located on the movement track of the ejector pin.

[0011] The operating mechanism also includes a lock reset member, which provides a restoring force to the lock.

[0012] The shell also accommodates a test rod and a test reset member. One end of the test rod passes through the shell and extends to the outside, and the other end of the test rod cooperates with the test reset member.

[0013] One of the shell and the test rod is provided with a guide groove, and the other of the shell and the test rod is provided with a guide rib matched with the guide groove.

[0014] The housing also contains a zero-sequence mutual inductor.

[0015] The housing also contains a circuit board, and the circuit board is electrically connected to the release and the zero-sequence transformer.

[0016] The technical solution of the utility model has the following advantages:

[0017] 1. The utility model provides a contactless amplification tripping mechanism, which forms an amplification structure through the arrangement of a jumper, a lock, a rotating plate, and an energy storage component. When the ejector moves, only a small force is needed to be converted into a strong force to drive the main switch to achieve tripping. This structure has a simple structure, a small number of parts, is easy to install, and can also reduce production costs.

[0018] 2. The utility model provides a contactless amplification tripping mechanism. The setting of the torsion spring makes installation and fixing more convenient. The torsion spring can also better form the effect of energy storage and energy release. In addition, the energy storage member can also be a straight spring.

[0019] 3. The utility model provides a contactless amplification tripping mechanism. The setting of the rotating shaft can better realize the rotation effect of the rotating plate, and the energy storage component also plays a hiding effect.

[0020] 4. The utility model provides a contactless amplification tripping mechanism, in which the linkage part extends to the outside and is used to cooperate with the adjacent body switch to form a synchronous linkage effect. Here, the synchronous linkage can also be formed by the handle above.

[0021] 5. The utility model provides a contactless amplifying release mechanism, which makes the lock structure simpler and smaller in size through the arrangement of the first leg and the second leg.

[0022] 6. The utility model provides a contactless amplification tripping mechanism, in which the lock reset member realizes the lock reset effect, gives the lock a restoring force, and enables the lock to rotate quickly.

[0023] 7. The utility model provides a contactless amplification tripping mechanism, in which the test rod is used for testing to ensure that the entire tripping mechanism is in a normal operating state.

[0024] 8. The utility model provides a contactless amplification and release mechanism, in which the cooperation between the guide groove and the guide rib achieves a guiding effect, making the test rod slide more smoothly.

[0025] 9. The utility model provides a contactless amplification tripping mechanism, which increases the function of accessories by setting a zero-sequence mutual inductor, and can detect whether the three-phase electricity of the main switch is balanced.

[0026] 10. The utility model provides a contactless amplification and tripping mechanism, and the arrangement of the circuit board forms a control effect, reduces the internal components, and satisfies the control effects of different detection states through the integrated circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 A schematic diagram of the structure of a contactless amplifying tripping mechanism provided by the utility model;

[0029] Figure 2 A schematic diagram of the partial structure of a contactless amplifying tripping mechanism provided by the utility model;

[0030] Figure 3 for Figure 2 A partial enlarged view of the middle A part;

[0031] Figure 4 A schematic diagram of the partial structure of a contactless amplifying tripping mechanism provided by the utility model;

[0032] Figure 5 This is a structural schematic diagram of the rotating plate provided by the utility model.

[0033] Description of reference numerals:

[0034] 11. Shell; 12. Release; 13. Jumper; 14. Lock; 15. Rotating plate; 16. Energy storage component; 17. U-shaped connecting rod; 18. Handle; 19. Lock reset component; 20. Test rod; 21. Test reset component; 22. Guide groove; 23. Guide rib; 24. Circuit board; 25. Zero sequence transformer; 26. Body switch; 111. Chamber; 112. Rotating shaft; 113. Fixed column; 114. Limiting wall; 115. Limiting block; 116. Through hole; 121. Ejector pin; 131. Buckle surface; 141. First support leg; 142. Second support leg; 151. First rotating column; 152. Second rotating column; 153. Driving block; 154. Linkage part; 1411. Buckle groove. DETAILED DESCRIPTION

[0035] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0039] Example 1

[0040] This embodiment provides a contactless amplification tripping mechanism, as shown in the attached Figure 1-5As shown, it is installed in the housing 11, where the housing 11 is provided with a chamber 111, and the enlarged tripping mechanism is accommodated in the chamber 111. The size of the housing 11 can be the same as that of a conventional small circuit breaker, and can achieve a splicing effect with the body switch 26. Here, it should be noted that the chamber 111 of this embodiment does not accommodate a moving contact or a static contact, thereby realizing a contactless structure.

[0041] Amplified trip mechanism, including:

[0042] The releaser 12 is provided with a pin 121, and the pin 121 cooperates with the lock of the operating mechanism. The releaser 12 can be an electromagnetic releaser 12. When a fault occurs in the line, the releaser 12 is actuated to move the pin 121, thereby achieving a tripping effect. Here, the pin 121 can move horizontally outward, or it can move horizontally to one side of the releaser 12 body. For different operating mechanisms, the pin 121 of the releaser 12 selects different working modes. In this embodiment, only the pin 121 moves horizontally outward. Taking the attached figure as an example, the pin 121 moves horizontally to the right.

[0043] The operating mechanism includes a trip button 13, a lock button 14 connected to the trip button 13, a rotating plate 15, an energy storage member 16, a U-shaped connecting rod 17, and a handle 18. The handle 18 is accommodated in the chamber 111, and the handle 18 partially extends outside the chamber 111. The handle 18 can form a linkage effect with the handle of the body switch 26 to form a synchronous rotation. The part of the handle 18 located in the chamber 111 is rotatably connected to the chamber 111. In order to improve the resetting effect of the handle 18, the handle 18 can also be provided with an energy storage structure such as a torsion spring or a spring.

[0044] One end of the U-shaped connecting rod 17 is connected to the handle 18, and the other end of the U-shaped connecting rod 17 is connected to the jumper 13. When the handle 18 rotates, the handle 18 drives the jumper 13 to move. The rotating plate 15 is rotatably arranged relative to the chamber 111, that is, the rotating plate 15 can rotate in the chamber 111. The jumper 13 rotates relative to the rotating plate 15, and under the linkage action of the U-shaped connecting rod 17, the jumper 13 drives the rotating plate 15 to rotate. The lock buckle 14 rotates relative to the rotating plate 15, and the lock buckle 14 is snap-connected with the jumper 13 toward the side of the jumper 13. When the switch is in the closed position, the jumper 13 is snap-connected with the lock buckle 14 to form a mutually locked effect. The lock buckle 14 cooperates with the ejector pin 121 on one side, specifically, the other end of the lock buckle 14 is located on the motion trajectory of the ejector pin 121. When the ejector pin 121 moves, it drives the lock buckle 14 to move, realizing the unlocking between the lock buckle 14 and the jumper 13.

[0045] The energy storage component 16 gives the rotating plate 15 a restoring force. In the closed state, the rotation of the rotating plate 15 will drive the energy storage component 16 to move and store energy. When the trip buckle 13 and the lock buckle 14 release the buckle connection, the energy storage component 16 releases energy to give the rotating plate 15 a restoring force, so that the rotating plate 15 is quickly reset, and at the same time drives the handle 18 to work together to form a tripping operation. Through the arrangement of the trip buckle 13, the lock buckle 14, the rotating plate 15, and the energy storage component 16, an amplification structure is formed. When the ejector pin 121 moves, only a small force is needed to be converted into a strong force to drive the main body switch 26 to achieve tripping. This structure has a simple structure, a small number of parts, is easy to install, and can also reduce production costs.

[0046] Specifically, as attached Figure 2-4 As shown, the energy storage member 16 is a torsion spring, one end of the energy storage member 16 abuts against the rotating plate 15, and the other end of the energy storage member 16 cooperates with the housing 11. Here, the energy storage member 16 specifically abuts against the chamber 111, and the chamber 111 may be provided with a protrusion, and the protrusion abuts against one end of the energy storage member 16. The provision of the torsion spring makes installation and fixation more convenient, and the torsion spring can also better form the effect of energy storage and energy release. In addition, the energy storage member 16 can also be a straight spring, one end of the straight spring abuts against the rotating plate 15, and the other end of the straight spring abuts against the inner wall of the chamber 111, which can also achieve the effect of energy storage reset.

[0047] Specifically, as attached Figure 2-4 As shown, the housing 11 is provided with a rotating shaft 112, where the rotating shaft 112 can be integrally formed with the housing 11, or can be a pin structure. In this embodiment, the chamber 111 is provided with a fixed column 113, and the rotating shaft 112 is a pin structure. One end of the rotating shaft 112 is connected and fixed to the fixed column 113, and the other end of the rotating shaft 112 is connected to the rotating plate 15. The energy storage component 16 is sleeved on the rotating shaft 112. More specifically, the energy storage component 16 is sleeved on the fixed column 113. Since the rotating shaft 112 is located in the fixed column 113, the energy storage component 16 can also be considered to be sleeved on the rotating shaft 112. In addition, when the diameter of the rotating shaft 112 increases, the energy storage component 16 can also be sleeved on the rotating shaft 112. The rotating plate 15 is also sleeved on the rotating shaft 112 to achieve a rotational connection effect between the rotating plate 15 and the rotating shaft 112. At this time, the energy storage component 16 is located below the rotating plate 15. The setting of the rotating shaft 112 can better realize the rotation effect of the rotating plate 15, and at the same time the energy storage component 16 also plays a hiding effect.

[0048] Specifically, as attached Figure 2-4 As shown, the jump buckle 13 and the lock buckle 14 are both located above the rotating plate 15. The jump buckle 13, the lock buckle 14 and the energy storage member 16 are arranged up and down to better achieve the transmission effect. Here, a first rotating column 151 and a second rotating column 152 are arranged above the rotating plate 15, and the jump buckle 13 cooperates with the first rotating column 151 to achieve the rotation effect, and the lock buckle 14 cooperates with the second rotating column 152 to achieve the rotation effect.

[0049] Specifically, as attached Figure 2-4 As shown, the chamber 111 is provided with a limiting wall 114, and the limiting wall 114 is located near the fixed column 113. The energy storage cavity is an arc-shaped structure. When the energy storage component 16 is a torsion spring, the lower end of the energy storage component 16 abuts against the side wall of the limiting wall 114, and the upper end of the energy storage component 16 cooperates with the upper end of the limiting wall 114. At this time, the upper end of the energy storage component 16 is located on the motion track of the rotating plate 15. Here, the rotating plate 15 is provided with a driving block 153 on the side facing the bottom surface of the chamber 111. The upper end of the energy storage component 16 is located on the motion track of the driving block 153. The energy storage effect of the energy storage component 16 is achieved by rotating the rotating plate 15. Further, a limiting block 115 is provided at the upper end of the limiting wall 114, and the upper end of the energy storage component 16 abuts against the limiting block 115, so that the energy storage component 16 can better achieve the installation and fixing effect.

[0050] Specifically, as attached Figure 4-5 As shown, the rotating plate 15 is provided with a linkage part 154, and the housing 11 is provided with a through hole 116, that is, the chamber 111 is provided with a through hole 116, and the linkage part 154 extends to the outside through the through hole 116. The linkage part 154 extends to the outside and is used to cooperate with the adjacent body switch 26 to form a synchronous linkage effect. Here, the synchronous linkage can also be formed by the handle 18 above. It can also be a double linkage, that is, the handle 18 is linked with the handle of the body switch 26, and the linkage part 154 is linked with the operating mechanism of the adjacent body switch 26.

[0051] Specifically, as attached Figure 2-4 As shown, the lock buckle 14 includes a first leg 141 and a second leg 142, and the first leg 141 is connected with the jump buckle 13 by snapping. Here, the snap connection specifically refers to that the first leg 141 is provided with a snap groove 1411, and the jump buckle 13 is provided with a snap surface 131, and the snap surface 131 cooperates with the snap groove 1411 to form a snap locking effect. The second leg 142 is located on the motion trajectory of the ejector 121. Through the arrangement of the first leg 141 and the second leg 142, the structure of the lock buckle 14 is simpler and the size is smaller. In this embodiment, the first leg 141 and the second leg 142 are respectively arranged on both sides of the rotating shaft 112, that is, the rotating shaft 112 is located between the first leg 141 and the second leg 142. Here, the angle between the first leg 141 and the second leg 142 can be adjusted according to actual needs.

[0052] Specifically, as attached Figure 2-4As shown, the operating mechanism also includes a lock reset member 19, which gives a restoring force to the lock 14. The lock reset member 19 achieves the reset effect of the lock 14, gives the lock 14 a restoring force, and makes the lock 14 rotate quickly. The lock reset member 19 is specifically sleeved on the second rotating column 152, one end of the lock reset member 19 abuts against the convex point on the first leg 141, and the other end of the lock reset member 19 abuts against the rotating plate 15. In this embodiment, the lock reset member 19 is a torsion spring.

[0053] Specifically, as attached Figure 1-3 As shown, the shell 11 also accommodates a test rod 20 and a test reset member 21. One end of the test rod 20 passes through the shell 11 and extends to the outside. Here, the test rod 20 specifically passes through the top surface of the shell 11, and the other end of the test rod 20 cooperates with the test reset member 21. The test rod 20 is used for testing to ensure that the entire tripping mechanism is in a normal operating state. Here, the test reset member 21 is also a torsion spring to form an energy storage effect. In this embodiment, the test rod 20 simulates a leakage state. When the test rod 20 is pressed, the releaser 12 is actuated to achieve a tripping operation.

[0054] Specifically, as attached Figure 1-3 As shown, one of the housing 11 and the test rod 20 is provided with a guide groove 22, and the other of the housing 11 and the test rod 20 is provided with a guide rib 23 that cooperates with the guide groove 22. Here, the guide groove 22 or the guide rib 23 is located in the chamber 111. The cooperation between the guide groove 22 and the guide rib 23 achieves a guiding effect, so that the test rod 20 slides more smoothly. When the chamber 111 is provided with a guide groove 22, the test rod 20 is provided with a guide rib 23; conversely, when the chamber 111 is provided with a guide rib 23, the test rod 20 is provided with a guide groove 22.

[0055] Specifically, as attached Figure 2-4 As shown, the housing 11 also accommodates a zero-sequence transformer 25. By providing the zero-sequence transformer 25, an additional function is added to detect whether the three-phase electricity of the body switch 26 is balanced.

[0056] Specifically, as attached Figure 2-4 As shown, the housing 11 also accommodates a circuit board 24, and the circuit board 24 is electrically connected to the release 12 and the zero-sequence transformer 25. The arrangement of the circuit board 24 forms a control effect, reduces the internal components, and satisfies the control effect of different detection states through the integrated circuit. In addition, it should be noted that the electrical connection between the circuit board 24 and the release 12, the zero-sequence transformer 25, and the body switch 26 can be a wire connection or a conductive bar connection. Those skilled in the art should know how to achieve the connection, so the corresponding electrical connection relationship is not reflected in the attached drawings.

[0057] Specifically, the main switch 26 may be an N-pole circuit breaker, or a circuit breaker of other phase lines, or a combination of a phase line circuit breaker and an N-pole circuit breaker.

[0058] Specifically, this structural setting can be used for leakage products and can also be used as a shunt accessory, with a simple structure and strong versatility.

[0059] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A contactless amplifying tripping mechanism, mounted on a housing (11), characterized in that: It includes: A release (12), wherein the release (12) is provided with a ejector pin (121), and the ejector pin (121) cooperates with a lock buckle (14) of an operating mechanism; The operating mechanism comprises a jump buckle (13), a lock buckle (14) connected to the jump buckle (13), a rotating plate (15), an energy storage component (16), a U-shaped connecting rod (17) and a handle (18); the U-shaped connecting rod (17) connects the jump buckle (13) and the handle (18); the jump buckle (13) rotates relative to the rotating plate (15) and the jump buckle (13) drives the rotating plate (15) to rotate; the lock buckle (14) rotates relative to the rotating plate (15); and the energy storage component (16) provides a restoring force to the rotating plate (15).

2. The contactless amplification tripping mechanism according to claim 1, characterized in that: The energy storage component (16) is a torsion spring, one end of the energy storage component (16) is against the rotating plate (15), and the other end of the energy storage component (16) is matched with the housing (11).

3. The contactless amplification tripping mechanism according to claim 2, characterized in that: The housing (11) is provided with a rotating shaft (112), the energy storage component (16) is sleeved on the rotating shaft (112), the rotating plate (15) is sleeved on the rotating shaft (112), and the energy storage component (16) is located below the rotating plate (15).

4. The contactless amplifying tripping mechanism according to claim 1, 2 or 3, characterized in that: The rotating plate (15) is provided with a linkage portion (154), the housing (11) is provided with a through hole (116), and the linkage portion (154) passes through the through hole (116) and extends to the outside.

5. The contactless amplification tripping mechanism according to claim 1, characterized in that: The lock buckle (14) comprises a first leg (141) and a second leg (142); the first leg (141) is snap-connected with the jump buckle (13); and the second leg (142) is located on the movement track of the ejector pin (121).

6. The contactless amplified tripping mechanism according to claim 1 or 5, characterized in that: The operating mechanism also includes a lock reset member (19), and the lock reset member (19) imparts a restoring force to the lock (14).

7. The contactless amplified tripping mechanism according to claim 1, characterized in that: The housing (11) further accommodates a test rod (20) and a test reset member (21); one end of the test rod (20) passes through the housing (11) and extends to the outside, and the other end of the test rod (20) cooperates with the test reset member (21).

8. The contactless amplified tripping mechanism according to claim 7, characterized in that: One of the housing (11) and the test rod (20) is provided with a guide groove (22), and the other of the housing (11) and the test rod (20) is provided with a guide rib (23) matched with the guide groove (22).

9. The contactless amplified tripping mechanism according to claim 1, characterized in that: The housing (11) also accommodates a zero-sequence mutual inductor (25).

10. The contactless amplified tripping mechanism according to claim 9, characterized in that: The housing (11) further accommodates a circuit board (24), and the circuit board (24) is electrically connected to the release (12) and the zero-sequence mutual inductor (25).

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