Opening and closing indicating mechanism of residual current protection circuit breaker

Abstract

The utility model relates to a switch-on and switch-off indicating mechanism of a residual current protection circuit breaker, which comprises a transmission piece, a driving piece, a switch-on and switch-off indicating piece and a reset spring, one end of the switch-on and switch-off indicating piece is provided with an indicating part extending into an indicating hole of a surface cover, and the other end of the switch-on and switch-off indicating piece is provided with an ejector rod part abutting against the driving piece. The middle cover is internally provided with an auxiliary contact matched with the driving part, the driving part acts along with the transmission part and triggers the auxiliary contact, connection or disconnection of the auxiliary contact is achieved, one side of the driving part is provided with a driving arm matched with the transmission part, and the driving arm is connected with the driving part. The transmission piece is provided with a stirring groove matched with the driving arm, one end of the driving arm is provided with a boss matched with the stirring groove, and the boss is clamped in the stirring groove. The utility model has the advantages of simple structure, stable and reliable performance, convenient assembly, and reliable opening and closing indication.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, in particular to an opening and closing indicating mechanism of a residual current protection circuit breaker. Background Art

[0002] A circuit breaker is a distribution device used in power grids. It can connect, carry and disconnect current under normal circuit conditions, and can also connect, carry and disconnect current for a certain period of time under specified abnormal conditions (such as overload, short circuit, leakage, undervoltage and single-phase grounding fault). With the development of the electric power industry, the operating mechanism of molded case circuit breakers has gradually become the mainstream of current development, and the design is developing in the direction of miniaturization and intelligence. The automatic reclosing mechanism is a special accessory for molded case circuit breakers. After cooperating with the circuit breaker, it can remotely close, disconnect and re-lock the circuit breaker to realize the centralized and automatic control of the transmission and distribution network. The structural design of the opening and closing indication mechanism of the existing residual current protection circuit breaker is complex, and the opening and closing indication is unreliable. Summary of the invention

[0003] The utility model aims to overcome the defects of the prior art and provide an opening and closing indicating mechanism for a residual current protection circuit breaker with simple structure, stable and reliable performance, convenient assembly and reliable opening and closing indication.

[0004] To achieve the above-mentioned purpose, the utility model adopts an opening and closing indication mechanism of a residual current protection circuit breaker, including a transmission member that cooperates with an operating mechanism, a driving member that is rotatably arranged on a contact box of a base, an opening and closing indication member that is slidably arranged on a middle cover at a corresponding position of the driving member, and a reset spring that is arranged between the opening and closing indication member and the face cover, one end of the opening and closing indication member has an indication portion that extends into an indication hole of the face cover, the other end of the opening and closing indication member has a top rod portion that abuts against the driving member, and constitutes a linkage cooperation between the opening and closing indication member and the driving member, an auxiliary contact that cooperates with the driving member is arranged in the middle cover, the driving member moves with the transmission member and triggers the auxiliary contact, and realizes the connection or disconnection of the auxiliary contact, a driving arm that cooperates with the transmission member is arranged on one side of the driving member, a toggle groove that cooperates with the driving arm is arranged on the transmission member, one end of the driving arm has a boss that cooperates with the toggle groove, and the boss is engaged in the toggle groove.

[0005] The beneficial effect of the above structure is that when the opening and closing switch indicating mechanism is working, the operating mechanism drives the driving member to move through the transmission member, the driving member pushes the opening and closing switch indicating member to move and trigger the auxiliary contact, so as to realize the connection or disconnection of the auxiliary contact, and the opening and closing switch indicating member moves with the driving member, thereby realizing the opening and closing switch indication of the opening and closing switch indicating mechanism. The auxiliary contact can monitor the position of the driving member, and the auxiliary contact can send the opening and closing switch signal to the background, so as to realize the opening and closing switch remote monitoring of the opening and closing switch indicating mechanism, which is conducive to improving the working reliability of the opening and closing switch indicating mechanism. The driving member is engaged with the transmission member through the driving arm, so as to facilitate the assembly of the driving member and the transmission member, the assembly efficiency is higher, and the transmission of the driving member and the transmission member can be guaranteed to be more reliable. Therefore, the opening and closing switch indicating mechanism has the advantages of simple structure, stable and reliable performance, convenient assembly, and reliable opening and closing switch indication.

[0006] In particular, a toggle arm matched with the switch-on / off indicator is provided on the other side of the driving member, and the toggle arm has a toggle slope matched with the top rod, and the top rod abuts against the toggle slope. The toggle slope matched with the switch-on / off indicator is provided on the driving member, which can avoid the toggle slope and the switch-on / off indicator from getting stuck or stuck, and can ensure that the transmission between the driving member and the switch-on / off indicator is more reliable.

[0007] In particular, the contact box is provided with a positioning shaft, the driving member is provided with a positioning hole matched with the positioning shaft, the positioning shaft is inserted into the positioning hole, and a rotational connection and cooperation between the driving member and the positioning shaft is formed. The driving member is rotationally arranged on the positioning shaft of the contact box, thereby facilitating the assembly of the driving member and the contact box, and the assembly efficiency is higher.

[0008] In particular, a guide conduit connected to the indicating hole is provided in the face cover, a positioning convex ring is provided on the switch-on / off indicating member, the reset spring is sleeved on the indicating member, one end of the reset spring abuts against the positioning convex ring, and the other end of the reset spring abuts against the guide sleeve of the face cover. The reset spring is engaged between the guide conduit of the face cover and the positioning convex ring of the switch-on / off indicating member, thereby ensuring that the switch-on / off indicating member can be reliably reset, which is beneficial to improving the working reliability of the switch-on / off indicating mechanism.

[0009] In particular, a guide hole is provided in the middle cover, and the top rod of the opening and closing indicator is inserted into the guide hole, and a sliding connection is formed between the opening and closing indicator and the middle cover. The guide hole guides the opening and closing indicator, and can ensure that the opening and closing indicator can reliably perform the opening and closing indication action, which is conducive to improving the working reliability of the opening and closing indicator mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a three-dimensional diagram of a residual current protection circuit breaker according to an embodiment of the utility model.

[0011] Figure 2 This is a cross-sectional view of the residual current protection circuit breaker according to the embodiment of the present utility model.

[0012] Figure 3 This is a perspective view of the embodiment of the present utility model. Specific embodiments

[0013] Such as Figures 1 to 3As shown, the embodiment of the utility model is an opening and closing indication mechanism of a residual current protection circuit breaker, including a transmission member 11 that cooperates with an operating mechanism 10, a driving member 14 that is rotatably arranged on a contact box 13 of a base 12, an opening and closing indication member 16 that is slidably arranged on a middle cover 15 corresponding to the driving member 14, and a reset spring 18 that is arranged between the opening and closing indication member 16 and a surface cover 17, one end of the opening and closing indication member 16 has an indication portion 161 that extends into an indication hole 171 of the surface cover 17, the other end of the opening and closing indication member 16 has a top rod portion 162 that abuts against the driving member 14, and constitutes a linkage cooperation between the opening and closing indication member 16 and the driving member 14, an auxiliary contact 19 that cooperates with the driving member 14 is arranged in the middle cover 15, the driving member 14 moves with the transmission member 11 and triggers the auxiliary contact 19, and realizes the connection or disconnection of the auxiliary contact 19. A driving arm 141 matched with the transmission member 11 is provided on one side of the driving member 14, and a toggle groove 111 matched with the driving arm 141 is provided on the transmission member 11. One end of the driving arm 141 has a boss 1411 matched with the toggle groove 111, and the boss 1411 is engaged in the toggle groove 111. The driving member is engaged with the transmission member through the driving arm, so that the assembly of the driving member and the transmission member is convenient, the assembly efficiency is higher, and the transmission of the driving member and the transmission member can be ensured to be more reliable. A toggle arm 142 matched with the opening and closing indicator 16 is provided on the other side of the driving member 14, and the toggle arm 142 has a toggle inclined surface 1421 matched with the top rod portion 162, and the top rod portion 162 abuts against the toggle inclined surface 1421. The driving member is provided with a toggle inclined surface matched with the opening and closing indicator, which can avoid the toggle inclined surface and the opening and closing indicator from getting stuck or stuck, and can ensure that the transmission between the driving member and the opening and closing indicator is more reliable. The contact box 13 is provided with a positioning shaft 131, and the driving member 14 is provided with a positioning hole 143 matched with the positioning shaft 131. The positioning shaft 131 is inserted into the positioning hole 143, and constitutes a rotational connection and cooperation between the driving member 14 and the positioning shaft 131. The driving member is rotatably arranged on the positioning shaft of the contact box, so as to facilitate the assembly of the driving member and the contact box, and the assembly efficiency is higher. The face cover 17 is provided with a guide conduit 172 connected to the indicating hole 171, the switch-on / off indicating member 16 is provided with a positioning convex ring 163, the reset spring sleeve 18 is mounted on the indicating portion 161, one end of the reset spring 18 abuts against the positioning convex ring 163, and the other end of the reset spring 18 abuts against the guide sleeve 172 of the face cover 17. The reset spring is engaged between the guide conduit of the face cover and the positioning convex ring of the switch-on / off indicating member, thereby ensuring that the switch-on / off indicating member can be reliably reset, which is beneficial to improving the working reliability of the switch-on / off indicating mechanism.

[0014] like Figure 2As shown, a guiding hole 151 is provided in the middle cover 15. The ejector rod portion 162 of the closing and opening indicating member 16 is inserted into the guiding hole 151, forming a sliding connection and cooperation between the closing and opening indicating member 16 and the middle cover 15. The guiding hole plays a guiding role for the closing and opening indicating member, which can ensure that the closing and opening indicating member can reliably perform the closing and opening indicating actions, and is beneficial to improving the working reliability of the closing and opening indicating mechanism.

[0015] When the closing and opening indicating mechanism is working, the operating mechanism drives the driving member to act through the transmission member. The driving member pushes the closing and opening indicating member to act and triggers the auxiliary contact, realizing the connection or disconnection of the auxiliary contact. The closing and opening indicating member acts with the driving member, thereby realizing the closing and opening indication of the closing and opening indicating mechanism. The auxiliary contact can monitor the position of the driving member, and the auxiliary contact can send the closing and opening signal to the background, thereby realizing the remote monitoring of the closing and opening of the closing and opening indicating mechanism, which is beneficial to improving the working reliability of the closing and opening indicating mechanism. Therefore, the closing and opening indicating mechanism has the advantages of simple structure, stable and reliable performance, convenient assembly, and reliable closing and opening indication.

Claims

1. A switch-on / off indication mechanism for a residual current protection circuit breaker, characterized in that: It includes a transmission member that cooperates with the operating mechanism, a driving member that is rotatably arranged on the contact box of the base, an opening and closing indicator that is slidably arranged on the middle cover at the corresponding driving member, and a reset spring that is arranged between the opening and closing indicator and the face cover. One end of the opening and closing indicator has an indicating portion that extends into the indicating hole of the face cover, and the other end of the opening and closing indicator has a top rod portion that abuts against the driving member, and constitutes the linkage cooperation between the opening and closing indicator and the driving member. An auxiliary contact that cooperates with the driving member is arranged in the middle cover, and the driving member moves with the transmission member and triggers the auxiliary contact, and realizes the connection or disconnection of the auxiliary contact. A driving arm that cooperates with the transmission member is arranged on one side of the driving member, and a toggle groove that cooperates with the driving arm is arranged on the transmission member. One end of the driving arm has a boss that cooperates with the toggle groove, and the boss is engaged in the toggle groove.

2. The opening and closing indicating mechanism of the residual current protection circuit breaker according to claim 1, characterized in that: A toggle arm matched with the switch opening and closing indicator is arranged on the other side of the driving member, and the toggle arm has a toggle inclined surface matched with the push rod part, and the push rod part abuts against the toggle inclined surface.

3. The opening and closing indicating mechanism of the residual current protection circuit breaker according to claim 1 or 2, characterized in that: The contact box is provided with a positioning shaft, the driving member is provided with a positioning hole matched with the positioning shaft, the positioning shaft is inserted into the positioning hole, and a rotational connection is formed between the driving member and the positioning shaft.

4. The opening and closing indicating mechanism of the residual current protection circuit breaker according to claim 1 or 2, characterized in that: A guide conduit connected to the indicating hole is arranged inside the face cover, a positioning convex ring is arranged on the opening and closing indicating member, the reset spring is sleeved on the indicating member, one end of the reset spring abuts against the positioning convex ring, and the other end of the reset spring abuts against the guide sleeve of the face cover.

5. The opening and closing indicating mechanism of the residual current protection circuit breaker according to claim 1 or 2, characterized in that: A guide hole is arranged in the middle cover, and the top rod of the switch-opening and closing indicator is inserted into the guide hole, thereby forming a sliding connection between the switch-opening and closing indicator and the middle cover.

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