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CN-224232529-U - Connecting terminal of circuit breaker

CN224232529UCN 224232529 UCN224232529 UCN 224232529UCN-224232529-U

Abstract

The utility model discloses a wiring terminal of a circuit breaker, which comprises a bracket and a plurality of wiring terminal units arranged on the bracket side by side, wherein the wiring terminal units comprise a terminal shell, a metal contact piece and a metal spring piece, the bracket is provided with a mounting cavity and an inlet and an outlet, the terminal shell of the wiring terminal unit is connected with the bracket through at least two groups of buckle components, the buckle components comprise lock bars arranged on the terminal shell, lock holes matched with the lock bars are arranged at positions of the bracket corresponding to the inner ends of the mounting cavities, and when the lock bars are matched with the lock holes, the lock bars have a first state of being locked in the lock holes in a free state and a second state of being deformed under the action of external force so as to be separated from the lock holes under the drive of the terminal shell. The utility model has stable and reliable structure and good universality, the same wiring terminal unit can be matched with brackets with different structures, the requirements of different clients on the number of the wiring terminal units and the bracket structure can be met, and the utility model has the advantage of flexible assembly.

Inventors

  • XIA KETE
  • XIA QIYUAN
  • XIA LEHAO

Assignees

  • 浙江永奇电气科技有限公司

Dates

Publication Date
20260512
Application Date
20250425

Claims (8)

  1. 1. The wiring terminal of the circuit breaker comprises a bracket (1) and a plurality of wiring terminal units (2) which are arranged on the bracket (1) side by side, wherein the wiring terminal units (2) comprise a terminal shell (3) and a metal contact piece (4) and a metal spring piece (5) which are arranged in the terminal shell (3), the metal contact piece (4) and the metal spring piece (5) are electrically connected, a mounting cavity (6) for accommodating the wiring terminal units (2) is arranged on the bracket (1), an inlet and outlet (7) for accommodating the wiring terminal units (2) in the mounting cavity (6) is arranged on the side part of the bracket (1), the circuit breaker is characterized in that the terminal shell (3) of the wiring terminal units (2) is connected with the bracket (1) through at least two groups of buckle components (8), the buckle components (8) comprise locking bars (9) which are arranged on the terminal shell (3), the bracket (1) is provided with locking holes (10) which are matched with the locking bars (9) at positions corresponding to the inner ends of the mounting cavity (6), and the locking bars (9) are in a free locking state (10) when the locking holes (10) are matched with the locking holes, and a second state in which the terminal housing (3) is driven to deform under the action of external force so as to be separated from the lock hole (10).
  2. 2. The wiring terminal of the circuit breaker according to claim 1, wherein the lock lever (9) comprises a lever body (11) and at least one barb portion (12) arranged at the end of the lever body (11), and a limiting step (13) which is in limiting fit with the barb portion (12) is arranged in the lock hole (10).
  3. 3. The connecting terminal of the circuit breaker according to claim 2, wherein the number of the barb portions (12) is two, and a relief groove (14) is arranged between the two barb portions (12).
  4. 4. The terminal of a circuit breaker according to claim 2, wherein the outer diameter of the rod body (11) corresponds to the inner diameter of the locking hole (10).
  5. 5. The terminal of a circuit breaker according to claim 2, characterized in that the direction of movement of the terminal unit (2) into the mounting cavity (6) is the same as the direction of movement of the locking bar (9) into the corresponding locking hole (10).
  6. 6. The terminal block of a circuit breaker according to claim 1, characterized in that the terminal housings (3) of every adjacent two terminal units (2) are in a clearance fit.
  7. 7. The connecting terminal of the circuit breaker according to any one of claims 1-6, wherein a protruding portion (15) is arranged at the upper end of a terminal housing (3) of the connecting terminal unit (2), an upper pressing plate (16) used for abutting against the upper end of the protruding portion (15) is arranged at a position, corresponding to the upper end of the mounting cavity (6), of the bracket (1), a limiting plate (17) used for abutting against the front side of the protruding portion (15) is downwards extended on the upper pressing plate (16), and the protruding portion (15) is connected with the limiting plate (17) through the clamping assembly (8).
  8. 8. The connecting terminal of the circuit breaker according to claim 7, wherein a plurality of first limit grooves (18) are formed in the position, corresponding to the lower end of the mounting cavity (6), of the bracket (1), a plurality of second limit grooves (19) are formed in the position, close to one side of the mounting cavity (6), of the upper pressing plate (16), the first limit grooves (18) and the second limit grooves (19) extend inwards from the inlet and outlet (7), the extending directions of the first limit grooves (18) and the second limit grooves (19) are the same as the mounting direction of the connecting terminal unit (2), and a first limit protrusion (20) which is matched with the first limit groove (18) and a second limit protrusion (21) which is matched with the second limit groove (19) are respectively formed at the lower end of the terminal housing (3) and the upper end of the protruding portion (15).

Description

Connecting terminal of circuit breaker Technical Field The utility model relates to the technical field of piezoelectric devices, in particular to a wiring terminal of a fixed circuit breaker. Background When the circuit has dangerous faults such as short circuit, serious overload, voltage loss and the like, the low-voltage circuit breaker can automatically cut off the fault circuit, and the electric equipment connected in series behind the circuit can be effectively protected. Therefore, a low voltage circuit breaker is a very important type of protection appliance in a low voltage distribution network. Compared with a drawer-type circuit breaker, the fixed-type circuit breaker with the same model and the same current level has the advantages of consistent technical performance index, small volume and low price. Therefore, the fixed circuit breaker is widely used. At present, the binding post of the fixed circuit breaker that is used in the market often includes the support and sets up a plurality of binding post units on the support, and a plurality of binding post units set up side by side on the support, through transversely run through support and a plurality of binding post units with the screw rod along the screw rod, tighten up through the nut at the screw rod both ends, fix a plurality of binding post units on the support. However, in the actual production process, the number of the terminal units and the shape structure of the bracket are required to be different from each other, and the conventional structure is adopted, so that the terminal cannot flexibly cope with the adaptive assembly of different brackets, and the situation that the terminal units are not tightly matched to generate shake due to improper size or the screw rod with corresponding size needs to be produced to adapt to different brackets causes the increase of cost. Therefore, there is a need in the market for a wiring terminal for a fixed circuit breaker with higher versatility and flexible assembly to meet the requirements of different customers on the number of wiring terminal units and the bracket structure. Disclosure of utility model The utility model aims to provide the wiring terminal of the circuit breaker, which has the advantages of stable and reliable structure, good universality, capability of matching the same wiring terminal unit with brackets with different structures, capability of meeting the requirements of different clients on the number of the wiring terminal units and the bracket structures, and flexible assembly. The wiring terminal of the circuit breaker comprises a support and a plurality of wiring terminal units arranged on the support side by side, wherein each wiring terminal unit comprises a terminal shell, a metal contact piece and a metal spring piece which are arranged in the terminal shell, the metal contact piece is electrically connected with the metal spring piece, a mounting cavity for accommodating the wiring terminal unit is arranged on the support, an inlet and an outlet for accommodating the wiring terminal unit in the mounting cavity are arranged on the side of the support, the terminal shell of the wiring terminal unit is connected with the support through at least two groups of buckle components, each buckle component comprises a lock rod arranged on the terminal shell, a lock hole matched with the lock rod is arranged at the position of the support corresponding to the inner end of the mounting cavity, and when the lock rod is matched with the lock hole, the lock rod is in a first state of being locked in the lock hole in a free state, and a second state of being deformed to enable the lock rod to be separated from the lock hole under the driving of the terminal shell under the action of external force. Through adopting above-mentioned technical scheme, every binding post unit is installed on the support through the mode of buckle connection alone, inserts the lockrod on the terminal casing of binding post unit in the lockhole of support during the installation promptly, lockrod and lockhole locking cooperation realize the fixed of binding post unit, and during the dismantlement, only need apply effort to the lockrod and make it take place deformation, release the locking of lockrod and lockhole, outwards pull out the terminal casing and can realize the separation of binding post unit and support, easy dismounting. The wiring terminal units can be uniformly and orderly arranged on the support according to the requirements, mutual interference is avoided, and the structure is stable and reliable. The same wiring terminal unit can be matched with the mounting brackets with different appearance structures, can meet the requirements of different customers on the number of the wiring terminal units and the bracket structures, and has the advantage of flexible assembly. The lock rod further comprises a rod body part and at least one barb part arranged at the end part of the rod body part, a