A mechanism with rapid action in case of leakage

Abstract

The present invention discloses a mechanism with rapid action in case of leakage, including a housing, wherein a first circuit breaker and a second circuit breaker are sequentially arranged in the housing from front to back, a release mechanism is arranged between the first circuit breaker and the second circuit breaker, the release mechanism includes a detection mechanism, a linkage rod, and two sets of locking mechanisms corresponding to the first circuit breaker and the second circuit breaker respectively, the linkage rod is rotatably installed inside the housing, and the present invention arranges a release mechanism in the middle position of the two-pole circuit breaker, when the remaining current in the circuit reaches a specified value, the locks of the two circuit breakers can be disassembled in time, the moving and static contacts of the circuit breakers are separated, thereby cutting off the circuit, playing a role of personal protection, and providing guarantee for safe use of electricity. For specific application scenarios, it is also suitable for 3P and 4P circuit breakers to adapt to more complex circuit conditions.

Description

Technical Field

[0001] The invention relates to the technical field of circuit breakers, in particular to a mechanism capable of rapid action in the event of leakage. Background Art

[0002] A circuit breaker is a switch device that can close, carry and disconnect the current under normal circuit conditions and can close, carry and disconnect the current under abnormal circuit conditions within a specified time. Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to their scope of use. The boundary between high and low voltage is relatively vague. Generally, those above 3kV are called high-voltage electrical appliances. Due to the rapid development of terminal protection electrical appliances for power grids, industry and households, small residual current circuit breakers are widely used as protection devices in electrical circuits in various places. It can not only disconnect and connect normal load currents, but also automatically cut off the line when there are overload, short circuit, residual current and other faults in the line, protecting the safety of equipment, people and property. Most of the existing small residual current circuit breakers do not have N-pole instantaneous action and overload protection, but only L-pole protection. If the user connects the L\N-pole line in reverse during use, it cannot effectively play a protective role when a fault actually occurs. Summary of the invention

[0003] The object of the present invention is to provide a mechanism that can quickly act when there is leakage, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A mechanism with rapid action in case of leakage, comprising a shell, in which a first circuit breaker and a second circuit breaker are arranged in sequence from front to back, a release mechanism is arranged between the first circuit breaker and the second circuit breaker, the release mechanism comprises a detection mechanism, a linkage rod, and two sets of locking mechanisms corresponding to the first circuit breaker and the second circuit breaker respectively, the linkage rod is rotatably installed inside the shell, the linkage rod comprises a rod portion, front and rear ends of the rod portion are provided with symmetrically distributed positioning shafts, the inner surface of the shell is provided with a positioning hole, the positioning shaft is rotatably installed in the positioning hole, one end of the rod portion is provided with a fork head portion, the surface of the fork head portion is provided with a U-shaped opening, the fork head portion is sleeved on the outer periphery of the connecting rod through the U-shaped opening, and the top of the other end of the rod portion is provided with an inverted L-shaped release surface.

[0006] Preferably, the detection mechanism includes a bracket, the bracket is fixed on the circuit board, a mutual inductor is arranged on the circuit board, the mutual inductor is arranged on the rear side of the bracket, a coil is installed at the bottom end of the bracket, a connecting rod is slidably installed on the bracket, a moving iron core is fixedly installed on the top end of the connecting rod, and one end of the connecting rod is in contact with the connecting rod.

[0007] Preferably, a dismantling shaft is provided in contact with the top of one end of the linkage rod away from the detection mechanism, and two locking mechanisms are provided at the front and rear ends of the dismantling shaft.

[0008] Preferably, the locking mechanism includes a contact bracket, a locking accessory, a lock and a jump lock, the contact bracket is fixed inside the shell, the locking accessory is fixedly connected to the lock, the locking accessory is arranged at one end of the contact bracket facing the dismantling shaft, the lock is arranged at one end of the contact bracket away from the dismantling shaft, and the jump lock is located at the top of the lock.

[0009] Preferably, an arc-shaped slide groove corresponding to the dismantling shaft is formed on an end surface of the locking accessory facing the dismantling shaft, and an end portion of the dismantling shaft is arranged inside the arc-shaped slide groove. The locking accessory is rotatably mounted on the contact bracket via a first pin shaft, the locking buckle is rotatably mounted on the contact bracket via a second pin shaft, and the jumping buckle is rotatably mounted on the contact bracket via a third pin shaft.

[0010] Preferably, a notch is provided at the top end of the lock buckle, and a protruding beak corresponding to the notch is provided at the bottom end of the jump buckle.

[0011] Preferably, the dismantling shaft is placed on the top of the inverted L-shaped release surface.

[0012] Compared with the prior art, the invention has the following beneficial effects: by setting a release mechanism in the middle of the two-pole circuit breaker, when the residual current in the circuit reaches a specified value, the locks of the two circuit breakers can be promptly released to separate the moving and static contacts of the circuit breaker, thereby cutting off the circuit, playing a role in personal protection and providing guarantee for safe use of electricity. For specific application scenarios, it is also suitable for 3P and 4P circuit breakers to adapt to more complex circuit conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The figure is a schematic diagram of the appearance of a mechanism with rapid action in case of leakage;

[0014] Figure 2 It is a schematic diagram of the internal structure of a mechanism with rapid action in case of leakage;

[0015] Figure 3 It is a structural schematic diagram of a buckle-removing mechanism in a mechanism with rapid action in case of leakage;

[0016] Figure 4 It is a structural schematic diagram of a lock buckle and a trip buckle in a mechanism with rapid action in case of leakage;

[0017] Figure 5 The present invention is a schematic diagram of the structure of a linkage rod in a mechanism with rapid action in case of leakage.

[0018] In the figure: 1-housing, 2-first circuit breaker, 3-second circuit breaker, 4-detection mechanism, 5-linking rod, 6-locking mechanism, 7-bracket, 8-coil, 9-linking rod, 10-moving iron core, 11-contact bracket, 12-disassembly shaft, 13-locking attachment, 14-first pin shaft, 15-locking, 16-second pin shaft, 17-third pin shaft, 18-jump buckle, 19-notch, 20-convex beak, 21-rod, 22-positioning shaft, 23-inverted L-shaped tripping surface, 24-fork head. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figures 1 to 5 The present invention provides a technical solution: a mechanism with rapid action when leakage occurs, comprising a housing 1, wherein a first circuit breaker 2 and a second circuit breaker 3 are sequentially arranged in the housing 1 from front to back, a release mechanism is arranged between the first circuit breaker 2 and the second circuit breaker 3, the release mechanism comprises a detection mechanism 4, a linkage rod 5, and two sets of locking mechanisms 6 corresponding to the first circuit breaker 2 and the second circuit breaker 3 respectively, the linkage rod 5 is rotatably installed inside the housing 1, the linkage rod 5 comprises a rod portion 21, and symmetrically distributed positioning shafts 22 are arranged at the front and rear ends of the rod portion 21, a positioning hole is opened on the inner surface of the housing 1, and the positioning shaft 22 is rotatably installed in the positioning hole, a fork head 24 is arranged at one end of the rod portion 21, a U-shaped opening is opened on the surface of the fork head 24, the fork head 24 is sleeved on the outer periphery of the connecting rod 9 through the U-shaped opening, and an inverted L-shaped release surface 23 is arranged on the top of the other end of the rod portion 21.

[0021] The detection mechanism 4 includes a bracket 7, which is fixed on a circuit board. A mutual inductor is arranged on the circuit board, and the mutual inductor is arranged on the rear side of the bracket 7. A coil 8 is installed at the bottom end of the bracket 7. A connecting rod 9 is slidably installed on the bracket 7. A moving iron core 10 is fixedly installed on the top of the connecting rod 9. One end of the connecting rod 5 is in contact with the connecting rod 9.

[0022] The top of the end of the linkage rod 5 away from the detection mechanism 4 is provided with a dismantling shaft 12 , and two locking mechanisms 6 are provided at the front and rear ends of the dismantling shaft 12 .

[0023] The locking mechanism 6 includes a contact bracket 11, a locking accessory 13, a lock 15 and a jump lock 18. The contact bracket 11 is fixed inside the housing 1. The locking accessory 13 is fixedly connected to the lock 15. The locking accessory 13 is arranged at one end of the contact bracket 11 facing the dismantling shaft 12. The lock 15 is arranged at one end of the contact bracket 11 away from the dismantling shaft 12. The jump lock 18 is located at the top of the lock 15.

[0024] The locking accessory 13 is provided with an arc-shaped sliding groove corresponding to the dismantling shaft 12 on one end surface facing the dismantling shaft 12, and the end of the dismantling shaft 12 is arranged inside the arc-shaped sliding groove. The locking accessory 13 is rotatably mounted on the contact bracket 11 through the first pin shaft 14, the locking buckle 15 is rotatably mounted on the contact bracket 11 through the second pin shaft 16, and the jumping buckle 18 is rotatably mounted on the contact bracket 11 through the third pin shaft 17.

[0025] The top end of the lock buckle 15 is provided with a notch 19 , and the bottom end of the jump buckle 18 is provided with a protruding beak 20 corresponding to the notch 19 .

[0026] The dismantling shaft 12 is placed on the top of the inverted L-shaped release surface 23 .

[0027] The working principle of the present invention is as follows: a detection circuit board is arranged inside the shell, and the coil 8 is connected to the circuit board. When the circuit board detects a residual current exceeding the threshold value, the coil 8 is energized to generate magnetic force, attracting the moving iron core 10 to move downward, and the moving iron core 10 drives the right end of the linkage rod 5 to descend. At this time, the linkage rod 5 rotates around the positioning shaft 22, and the left end pries the dismantling shaft 12 to rise. The dismantling shaft 12 drives the lock attachment 13 to rotate around the first pin shaft 14, and the lock attachment 13 drives the lock 15 to rotate around the second pin shaft 16, so that the notch 19 is staggered with the convex beak 20, and the lock 15 is disengaged from the trip buckle 18, so that the moving and static contacts of the circuit breaker are separated, so as to achieve the effect of cutting off the circuit. A two-stage switch is used in this embodiment. For specific application scenarios, it is also suitable for 3P and 4P circuit breakers to adapt to more complex circuit conditions.

[0028] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0029] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A mechanism capable of rapid action in case of leakage, comprising a housing (1), characterized in that: A first circuit breaker (2) and a second circuit breaker (3) are arranged in sequence from front to back in the housing (1); a release mechanism is arranged between the first circuit breaker (2) and the second circuit breaker (3); the release mechanism comprises a detection mechanism (4), a linkage rod (5), and two sets of locking mechanisms (6) corresponding to the first circuit breaker (2) and the second circuit breaker (3), respectively; the linkage rod (5) is rotatably mounted inside the housing (1); the linkage rod (5) comprises a rod portion (21); symmetrically distributed positioning shafts (22) are arranged at the front and rear ends of the rod portion (21); a positioning hole is provided on the inner surface of the housing (1); the positioning shaft (22) is rotatably mounted in the positioning hole; a fork head portion (24) is provided at one end of the rod portion (21); a U-shaped opening is provided on the surface of the fork head portion (24); the fork head portion (24) is sleeved on the outer periphery of the connecting rod (9) through the U-shaped opening; and an inverted L-shaped release surface (23) is provided at the top of the other end of the rod portion (21).

2. A mechanism with rapid action in case of leakage according to claim 1, characterized in that: The detection mechanism (4) comprises a bracket (7), the bracket (7) is fixed on a circuit board, a mutual inductor is arranged on the circuit board, the mutual inductor is arranged on the rear side of the bracket (7), a coil (8) is installed at the bottom end of the bracket (7), a connecting rod (9) is slidably installed on the bracket (7), a moving iron core (10) is fixedly installed at the top end of the connecting rod (9), and one end of the connecting rod (5) is in contact with the connecting rod (9).

3. A mechanism with rapid action in case of leakage according to claim 2, characterized in that: A dismantling shaft (12) is provided at the top of one end of the linkage rod (5) away from the detection mechanism (4), and two locking mechanisms (6) are provided at the front and rear ends of the dismantling shaft (12).

4. A mechanism with rapid action in case of leakage according to claim 3, characterized in that: The locking mechanism (6) comprises a contact support (11), a locking accessory (13), a locking buckle (15) and a jump buckle (18); the contact support (11) is fixed inside the housing (1); the locking accessory (13) is fixedly connected to the locking buckle (15); the locking accessory (13) is arranged at one end of the contact support (11) facing the dismantling shaft (12); the locking buckle (15) is arranged at one end of the contact support (11) away from the dismantling shaft (12); and the jump buckle (18) is located at the top of the locking buckle (15).

5. A mechanism with rapid action in case of leakage according to claim 4, characterized in that: An arc-shaped slide groove corresponding to the dismantling shaft (12) is formed on one end surface of the lock accessory (13) facing the dismantling shaft (12); the end of the dismantling shaft (12) is arranged inside the arc-shaped slide groove; the lock accessory (13) is rotatably mounted on the contact bracket (11) via a first pin shaft (14); the lock (15) is rotatably mounted on the contact bracket (11) via a second pin shaft (16); and the jumper (18) is rotatably mounted on the contact bracket (11) via a third pin shaft (17).

6. A mechanism with rapid action in case of leakage according to claim 5, characterized in that: The top end of the lock buckle (15) is provided with a notch (19), and the bottom end of the jump buckle (18) is provided with a protruding beak (20) corresponding to the notch (19).

7. A mechanism with rapid action in case of leakage according to claim 6, characterized in that: The dismantling shaft (12) is placed on the top of the inverted L-shaped release surface (23).

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