Plug-in Miniature Circuit Breaker

Abstract

The present invention relates to the field of low-voltage electrical appliances, and particularly to a plug-in miniature circuit breaker, which comprises a housing; the housing includes a in-place indication window and an extension port provided thereon; the plug-in miniature circuit breaker further comprises an in-place indication mechanism, the in-place indication mechanism includes a driven projection and an in-place indication end respectively provided at both ends thereof, the driven projection protrudes outside the housing through the extension port, and the in-place indication end is disposed opposite to the in-place indication window; after the plug-in miniature circuit breaker is installed to the circuit breaker assembly position and installed in place, the housing at the circuit breaker assembly position squeezes the driven projection, so that the in-place indication end indicates that the plug-in miniature circuit breaker is in the installed-in-place state through the in-place indication window; for the plug-in miniature circuit breaker of the present invention, its in-place indication mechanism can accurately indicate whether the circuit breaker is installed in place, improves the assembly efficiency of the circuit breaker, and ensures the working stability of the circuit breaker.

Description

Technical Field

[0001] The present invention relates to the field of low-voltage electrical appliances, and particularly to a plug-in miniature circuit breaker. Background Art

[0002] The use of circuit breakers can effectively improve the safety of electrical appliances. To meet the installation needs of different electrical equipment, the structures of plug-in miniature circuit breakers are various. With the development trend of miniaturization of electrical equipment, the overall structure and operation mode of the adapted plug-in miniature circuit breakers need to be further upgraded. The existing plug-in miniature circuit breakers generally have the following deficiencies:

[0003] 1. The opening and closing indicating parts of the existing plug-in miniature circuit breakers are mostly arranged inside the operating parts. When performing opening and closing operations on the circuit breaker, the opening and closing conditions inside the circuit breaker cannot be observed in time due to the obstruction of the limbs.

[0004] 2. The existing plug-in miniature circuit breakers only have the function of indicating the working state of the circuit breaker, and cannot indicate whether the installation is in place when installing the circuit breaker. A circuit breaker that is not installed in place is difficult to ensure stability during operation, and is extremely likely to come out of the installation position, affecting the continuity and stability of the circuit. Summary of the Invention

[0005] The purpose of the present invention is to overcome the defects of the prior art and provide a plug-in miniature circuit breaker with an in-place indicating mechanism that can accurately indicate whether the circuit breaker is installed in place, improve the assembly efficiency of the circuit breaker, and ensure the working stability of the circuit breaker.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A plug-in miniature circuit breaker includes a housing 6; the housing 6 includes an in-place indicating window 62b and an extending port 64 provided thereon; the plug-in miniature circuit breaker further includes an in-place indicating mechanism, and the in-place indicating mechanism includes a driven protrusion 51 and an in-place indicating end 4243 respectively provided at both ends thereof. The driven protrusion 51 protrudes outside the housing 6 through the extending port 64, and the in-place indicating end 4243 is disposed opposite to the in-place indicating window 62b; after the plug-in miniature circuit breaker is installed in the circuit breaker assembly position and installed in place, the housing at the circuit breaker assembly position presses the driven protrusion 51, so that the in-place indicating end 4243 indicates the installed state of the plug-in miniature circuit breaker through the in-place indicating window 62b.

[0008] Preferably, the in-place indication end 4243 includes a warning surface 42 and an in-place indication surface 43; when the plug-in miniature circuit breaker is not installed or is installed in the circuit breaker assembly position but not in place, the warning surface 42 is visible through the in-place indication window 62b, indicating that the plug-in miniature circuit breaker is not installed in place; after the plug-in miniature circuit breaker is installed in the circuit breaker assembly position and in place, the in-place indication surface 43 is visible through the in-place indication window 62b, indicating that the plug-in miniature circuit breaker is installed in place.

[0009] Preferably, the in-place indication mechanism includes an in-place indication member 4 and an in-place linkage member 5 pivotally provided on the housing 6 respectively. One end of the in-place indication member 4 is provided with an in-place indication end 4243, and the other end is in driving cooperation with one end of the in-place linkage member 5. The other end of the in-place linkage member 5 is provided with a driven projection 51.

[0010] Preferably, the middle of the in-place indication member 4 is pivotally provided on the housing 6, and includes an in-place indication end 4243 and an in-place driven projection 41 provided at both ends respectively; the middle of the in-place linkage member 5 is pivotally provided on the housing 6, and includes an in-place driving projection 52 and a driven projection 51 provided at both ends respectively. The in-place driving projection 52 is in driving cooperation with the in-place driven projection 41;

[0011] After the plug-in miniature circuit breaker is installed in the circuit breaker assembly position and in place, the housing at the circuit breaker assembly position presses the driven projection 51 to rotate the in-place linkage member 5. The in-place linkage member 5 drives the in-place indication member 4 to rotate through the in-place driving projection 52 and the in-place driven projection 41, so that the in-place indication surface 43 of the indication end 4243 is visible through the in-place indication window 62b, indicating that the plug-in miniature circuit breaker is installed in place.

[0012] Preferably, it further includes an operating mechanism and a contact system. The operating mechanism includes an operating member 1 with one end inserted into the housing 6 and the other end protruding outside the housing 6. The contact system includes a moving contact 900c with one end connected to the operating mechanism and a static contact 910c cooperating with the moving contact 900c;

[0013] The in-place linkage member 5 further includes a circuit breaker locking projection 53 provided on one side of the in-place driving projection 52. The circuit breaker locking projection 53 is in limit cooperation with the operating mechanism to prevent the operating member 1 from moving in the circuit breaker closing direction; after the plug-in miniature circuit breaker is installed in the circuit breaker assembly position and in place, the housing at the circuit breaker assembly position presses the driven projection 51 to rotate the in-place linkage member 5, releasing the limit cooperation between the circuit breaker locking projection 53 and the operating mechanism.

[0014] Preferably, the operating mechanism further includes a first connecting rod 7, and the first connecting rod 7 includes a first end 70 of the connecting rod inserted on the operating member 1; the operating member 1 is in limit fit with the circuit breaker locking projection 53, or the first end 70 of the connecting rod is in limit fit with the circuit breaker locking projection 53.

[0015] Preferably, it further includes a closing and opening indicating member 2 disposed in the housing 6 and used for indicating the closing and opening states of the plug-in miniature circuit breaker. The closing and opening indicating member 2 is disposed on one side of the operating member 1 and is in linkage cooperation therewith; pressing the operating member 1 causes the plug-in miniature circuit breaker to enter the closing state through the operating mechanism, and the closing and opening indicating member 2 acts, and the closing state of the plug-in miniature circuit breaker is indicated through the closing and opening indicating window 62a.

[0016] Preferably, the closing and opening indicating member 2 includes a tripping indication surface 22 and a closing indication surface 23 provided thereon; the housing 6 includes a closing and opening indicating window 62a provided thereon and cooperating with the closing and opening indicating member 2;

[0017] When the plug-in miniature circuit breaker is in the tripping state, the tripping indication surface 22 is visible through the closing and opening indicating window 62a. Pressing the operating member 1 causes the plug-in miniature circuit breaker to change from the tripping state to the closing state, and the closing and opening indicating member 2 acts to make the closing indication surface 23 visible through the closing and opening indicating window 62a.

[0018] Preferably, the closing and opening indicating member 2 is pivotally disposed on the housing 6. After pressing the operating member 1 to cause the plug-in miniature circuit breaker to change from the tripping state to the closing state, the closing and opening indicating member 2 rotates to make the closing indication surface 23 visible through the closing and opening indicating window 62a.

[0019] Preferably, the closing and opening indicating member 2 includes a first indicating member limiting platform 21a provided on one side thereof, and the operating member 1 includes a first operating member limiting boss 11a provided on one side thereof. The first indicating member limiting boss 21 is in limit fit with the first operating member limiting boss 11a; pressing the operating member 1 causes the plug-in miniature circuit breaker to change from the tripping state to the closing state, and the first operating member limiting boss 11a moves to one side of the first indicating member limiting platform 21a, releasing the limit fit with the first indicating member limiting platform 21a, and the closing and opening indicating member 2 rotates to make the closing indication surface 23 visible through the closing and opening indicating window 62a.

[0020] Preferably, both the in-place indicating member 4 and the closing and opening indicating member 2 are pivotally disposed on the housing 6 through the first mounting shaft 63 of the housing 6.

[0021] Preferably, the housing 6 further includes an operating member socket 66 provided thereon. The side wall of the housing 6 provided with the operating member socket 66 is the first side wall, and the side wall of the housing 6 provided with the outlet 64 is the second side wall. One end of the first side wall is bent and connected to one end of the second side wall, and the on-off indication window 62a and the in-place indication window 62b are both provided at the connection of the first side wall and the second side wall.

[0022] For the plug-in miniature circuit breaker of the present invention, its in-place indication mechanism can accurately indicate whether the plug-in miniature circuit breaker is in the installed-in-place state, improving the electrical safety; the in-place indication end of the in-place indication mechanism cooperates with the in-place indication window of the housing to indicate whether the plug-in miniature circuit breaker is installed in place, which is more intuitive and clear; in addition, the circuit breaker locking protrusion of the in-place linkage member can prevent the operating member from moving in the circuit breaker closing direction when the plug-in miniature circuit breaker is in the uninstalled or not installed-in-place state, further improving the electrical safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic projection structure diagram of the plug-in miniature circuit breaker of the present invention, showing the structure of the first embodiment of the linkage cooperation between the on-off indication member and the operating member;

[0024] Figure 2 is of the present invention Figure 1 An enlarged structure diagram of part A, showing at least the cooperation relationship between the operating member and the on-off indication member in the circuit breaker tripped state;

[0025] Figure 3 is a schematic three-dimensional structure diagram of the plug-in miniature circuit breaker of the present invention, showing at least the structure of the second embodiment of the linkage cooperation between the on-off indication member and the operating member;

[0026] Figure 4 is of the present invention Figure 3 An enlarged structure diagram of part B, showing at least the cooperation relationship between the operating member and the on-off indication member in the circuit breaker tripped state;

[0027] Figure 5 is a schematic projection structure diagram of the first embodiment of the linkage cooperation between the on-off indication member and the operating member of the present invention, showing the cooperation relationship between the operating member and the on-off indication member in the circuit breaker closed state;

[0028] Figure 6 is a schematic structure diagram of the first embodiment of the on-off indication member of the present invention, showing at least the structure of the first indication member limiting platform;

[0029] Figure 7 is a schematic structure diagram of the first embodiment of the on-off indication member of the present invention, showing at least the structures of the tripping indication surface and the closing indication surface;

[0030] Figure 8 is a schematic diagram of the three-dimensional structure of the plug-in miniature circuit breaker of the present invention, showing the structure of the second embodiment in which the opening and closing indicator and the operating member are coordinated with each other, and the circuit breaker is in the opening state;

[0031] Figure 9 The present invention Figure 8 The enlarged structural diagram of the C part at least shows the coordination relationship between the opening and closing indicator and the operating member when the circuit breaker is in the open state;

[0032] Figure 10 It is a structural schematic diagram of a second embodiment of the present invention in which an operating member and an opening and closing indicator member cooperate in a coordinated manner in an opening state of a circuit breaker;

[0033] Figure 11 It is a three-dimensional structural schematic diagram of the plug-in miniature circuit breaker of the present invention, at least showing the structure of the second embodiment in which the opening and closing indicator and the operating member are linked and coordinated, and the circuit breaker is in the closed state;

[0034] Figure 12 The present invention Figure 11 The enlarged structural diagram of the D part at least shows the coordination relationship between the opening and closing indicator and the operating member when the circuit breaker is in the closed state;

[0035] Figure 13 is a schematic diagram of the three-dimensional structure of the plug-in miniature circuit breaker of the present invention, at least showing the structure of the third embodiment in which the opening and closing indicator and the operating member are coordinated, and the circuit breaker is in the opening state;

[0036] Figure 14 The present invention Figure 13 The enlarged structural diagram of part E at least shows the coordination relationship between the opening and closing indicator and the operating member when the circuit breaker is in the open state;

[0037] Figure 15 It is a structural schematic diagram of a third embodiment of the present invention in which an operating member in an open state of a circuit breaker and an opening and closing indicating member cooperate with each other;

[0038] Figure 16 is a schematic diagram of the three-dimensional structure of the plug-in miniature circuit breaker of the present invention, at least showing the structure of the third embodiment in which the opening and closing indicator and the operating member are linked and coordinated, and the circuit breaker is in the closed state;

[0039] Figure 17 The present invention Figure 16 The enlarged structural diagram of the F part at least shows the coordination relationship between the opening and closing indicator and the operating member when the circuit breaker is in the closed state;

[0040] Figure 18It is a schematic projection structure diagram of the plug-in miniature circuit breaker of the present invention, showing at least the structure of the first embodiment of the in-place indication mechanism, and the circuit breaker is in the state of not being installed in place;

[0041] Figure 19 It is the present invention Figure 18 An enlarged structure diagram of part G of, showing at least the structure of the first embodiment of the in-place indication mechanism;

[0042] Figure 20 It is a schematic projection structure diagram of the plug-in miniature circuit breaker of the present invention, showing at least the structure of the first embodiment of the in-place indication mechanism, and the circuit breaker is in the state of being installed in place;

[0043] Figure 21 It is the present invention Figure 20 An enlarged structure diagram of part H of, showing at least the structure of the first embodiment of the in-place indication mechanism;

[0044] Figure 22 It is a schematic diagram of the cooperation structure between the in-place linkage member of the in-place indication mechanism and the operating mechanism of the present invention when the circuit breaker is in the state of not being installed in place;

[0045] Figure 23 It is a schematic diagram of the cooperation structure between the in-place linkage member of the in-place indication mechanism and the operating mechanism of the present invention when the circuit breaker is in the state of being installed in place;

[0046] Figure 24 It is a schematic diagram of the positional relationship between the closing and opening indication member and the in-place indication member of the present invention;

[0047] Figure 25 It is a schematic projection structure diagram of the plug-in miniature circuit breaker of the present invention, showing at least the structure of the second embodiment of the in-place indication mechanism;

[0048] Figure 26 It is a schematic structure diagram of the second embodiment of the in-place indication mechanism of the present invention, showing at least the cooperation relationship between the operating member and the in-place indication member when the circuit breaker is in the state of not being installed in place;

[0049] Figure 27 It is a schematic structure diagram of the second embodiment of the in-place indication mechanism of the present invention, showing at least the cooperation relationship between the operating member and the in-place indication member when the circuit breaker is in the state of being installed in place;

[0050] Figure 28 It is a schematic structure diagram of the third embodiment of the in-place indication mechanism of the present invention;

[0051] Figure 29 It is a schematic structure diagram of the circuit breaker locking member of the in-place indication mechanism of the present invention, showing at least the cooperation relationship between the operating member and the circuit breaker locking member when the circuit breaker is in the state of being installed in place. Detailed implementation manners

[0052] The following combines with the Figure 1-29 illustrated embodiments to further describe the detailed implementation manners of the plug-in miniature circuit breaker of the present invention. The plug-in miniature circuit breaker of the present invention is not limited to the descriptions of the following embodiments.

[0053] As Figure 1 、 3 、8, 11, 13, 16, 19, 20, 25 show, the plug-in miniature circuit breaker of the present invention includes a housing 6, an operating mechanism and a contact system. The operating mechanism includes an operating member 1 with one end inserted into the housing 6 and the other end protruding outside the housing 6. The contact system includes a moving contact 900c connected to the operating mechanism at one end and a stationary contact 910c cooperating with the moving contact 900c.

[0054] Preferably, as Figure 1-17 shown, the housing 6 includes a closing and opening indication window 62a provided thereon; the plug-in miniature circuit breaker further includes a closing and opening indication member 2 provided inside the housing 6 and used for indicating the closing and opening states of the plug-in miniature circuit breaker. The closing and opening indication member 2 is arranged on one side of the operating member 1 and is in linkage cooperation with it; pressing the operating member 1 causes the plug-in miniature circuit breaker to enter the closing state through the operating mechanism, and the closing and opening indication member 2 acts to indicate the closing state of the plug-in miniature circuit breaker through the closing and opening indication window 62a. Further, as Figure 1-17 shown, the closing and opening indication member 2 includes a tripping indication surface 22 and a closing indication surface 23 provided thereon; when the plug-in miniature circuit breaker is in the tripping state, the tripping indication surface 22 is visible through the closing and opening indication window 62a. Pressing the operating member 1 causes the plug-in miniature circuit breaker to change from the tripping state to the closing state, and the closing and opening indication member 2 acts to make the closing indication surface 23 visible through the closing and opening indication window 62a. Further, as Figure 1-17 shown, the closing and opening indication member 2 is pivotally arranged on the housing 6. Pressing the operating member 1 causes the plug-in miniature circuit breaker to change from the tripping state to the closing state, and the closing and opening indication member 2 rotates to make the closing indication surface 23 visible through the closing and opening indication window 62a. Further, as Figure 1-17 shown, when the plug-in miniature circuit breaker is in the closing state, pulling out the operating member 1 causes the plug-in miniature circuit breaker to enter the tripping state through the operating mechanism. The operating member 1 drives the closing and opening indication member 2 to rotate, making the tripping indication surface 22 visible through the closing and opening indication window 62a; or, when the plug-in miniature circuit breaker is in the closing state, pressing the operating member 1 causes the plug-in miniature circuit breaker to enter the tripping state through the operating mechanism, and at the same time the operating member 1 pops up. The operating member 1 drives the closing and opening indication member 2 to rotate, making the tripping indication surface 22 visible through the closing and opening indication window 62a.

[0055] The plug-in miniature circuit breaker of the present invention has a closing and opening indicating member 2 that is linked and cooperated with an operating member 1, so that the action of the closing and opening indicating member 2 is directly controlled by the operating member 1, which can accurately indicate the closing and opening states of the plug-in miniature circuit breaker and improve the safety of power consumption. The closing and opening indicating member 2 is pivotally arranged on a housing 6, which is beneficial to reducing the assembly space and the movement space of the closing and opening indicating member 2, saving the internal space of the circuit breaker, and facilitating the miniaturization of the plug-in miniature circuit breaker. The closing and opening indicating window 62 of the housing 6 is used to indicate the closing and opening states of the plug-in miniature circuit breaker, which is more intuitive and clear.

[0056] Preferably, as Figure 18-24 shown, the housing 6 includes a in-place indicating window 62b and an extending port 64 provided thereon; the plug-in miniature circuit breaker further includes a in-place indicating mechanism, and the in-place indicating mechanism includes a driven projection 51 and a in-place indicating end 4243 respectively provided at both ends thereof. The driven projection 51 protrudes outside the housing 6 through the extending port 64, and the in-place indicating end 4243 is arranged opposite to the in-place indicating window 62b; after the plug-in miniature circuit breaker is installed in the circuit breaker assembly position and installed in place, the housing at the circuit breaker assembly position squeezes the driven projection 51, so that the in-place indicating end 4243 indicates that the plug-in miniature circuit breaker is in the installed-in-place state through the in-place indicating window 62b. Further, as Figure 18-24 shown, the in-place indicating end 4243 includes a warning surface 42 and a in-place indicating surface 43; when the plug-in miniature circuit breaker is not installed and when the plug-in miniature circuit breaker is installed in the circuit breaker assembly position but not installed in place, the warning surface 42 is visible through the in-place indicating window 62b, indicating that the plug-in miniature circuit breaker is in the not-installed-in-place state; after the plug-in miniature circuit breaker is installed in the circuit breaker assembly position and installed in place, the in-place indicating surface 43 is visible through the in-place indicating window 62b, indicating that the plug-in miniature circuit breaker is in the installed-in-place state. Further, as Figure 18-24 shown, the in-place indicating mechanism includes a in-place indicating member 4 and a in-place linkage member 5. One end of the in-place indicating member 4 is provided with a in-place indicating end 4243, and the other end is drivingly cooperated with one end of the in-place linkage member 5. The other end of the in-place linkage member 5 is provided with a driven projection 51. Further, the in-place linkage member 5 further includes a circuit breaker locking projection 53 arranged on one side of the in-place driving projection 52, and the circuit breaker locking projection 53 is in limit cooperation with the operating mechanism to prevent the operating member 1 from moving in the circuit breaker closing direction (i.e., preventing the operating member 1 from moving into the housing 6); after the plug-in miniature circuit breaker is installed in the circuit breaker assembly position and installed in place, the housing at the circuit breaker assembly position squeezes the driven projection 51, so that the in-place linkage member 5 rotates to release the limit cooperation between the circuit breaker locking projection 53 and the operating mechanism.

[0057] The plug-in miniature circuit breaker of the present invention has a in-place indication mechanism that can accurately indicate whether the plug-in miniature circuit breaker is in the installed-in-place state, improving the safety of electricity use and ensuring the working stability of the circuit breaker; the in-place indication window 62b of the housing is used to indicate whether the plug-in miniature circuit breaker is installed in place, which is more intuitive and clear; and the circuit breaker locking protrusion 53 of the in-place linkage member 5 can prevent the operating member 1 from moving in the circuit breaker closing direction when the plug-in miniature circuit breaker is in the uninstalled or not-installed-in-place state, further improving the safety of electricity use.

[0058] Preferably, as Figure 25-29 shown, the housing 6 includes an in-place indication window 62b and an extension opening 64 provided thereon; the plug-in miniature circuit breaker further includes an in-place indication mechanism disposed inside the housing 6, and the in-place indication mechanism includes an in-place indication member 4. The middle of the in-place indication member 4 is pivotally arranged on the housing 6. The in-place indication member 4 includes an indication end 4cd and an indication member driven end 4a respectively disposed at both ends thereof. The indication end 4cd is disposed opposite to the in-place indication window 62b, and the indication member driven end 4a protrudes outside the housing 6 through the extension opening 64; after the plug-in miniature circuit breaker is installed to the circuit breaker assembly position and installed in place, the housing at the circuit breaker assembly position presses the indication member driven end 4a, so that the indication end 4cd indicates that the plug-in miniature circuit breaker is in the installed-in-place state through the in-place indication window 62b. Further, as Figure 25-29 shown, the indication end 4cd includes a warning side surface 4c and an in-place indication side surface 4d; when the plug-in miniature circuit breaker is not installed and when the plug-in miniature circuit breaker is installed to the circuit breaker assembly and not installed in place, the warning side surface 4c is visible through the in-place indication window 62b, indicating that the plug-in miniature circuit breaker is in the not-installed-in-place state; after the plug-in miniature circuit breaker is installed to the circuit breaker assembly position and installed in place, the in-place indication side surface 4d is visible through the in-place indication window 62b, indicating that the plug-in miniature circuit breaker is in the installed-in-place state. Further, as Figure 25-29 shown, the plug-in miniature circuit breaker further includes a circuit breaker locking member 8 pivotally arranged in the middle on the housing 6. The circuit breaker locking member 8 includes a locking boss 81 and a locking member driven end 80 respectively disposed at both ends thereof. The locking boss 81 is in limit cooperation with the operating mechanism to prevent the operating member 1 from moving in the circuit breaker closing direction (that is, preventing the operating member 1 from moving into the housing 6); after the plug-in miniature circuit breaker is installed to the circuit breaker assembly position and installed in place, the housing at the circuit breaker assembly position presses the locking member driven end 80, causing the circuit breaker locking member 8 to rotate, releasing the limit cooperation between the locking boss 81 and the operating mechanism, and pressing the operating member 1 to close the moving contact 900c and the static contact 910c through the operating mechanism.

[0059] The plug-in miniature circuit breaker of the present invention, its in-place indicating mechanism includes an in-place indicating member 4, and the in-place indicating member 4 is in driving cooperation with the housing at the circuit breaker assembly position, which can accurately indicate whether the plug-in miniature circuit breaker is installed in place, improving the electrical safety, ensuring the working stability of the circuit breaker, and moreover, the structure of the in-place indicating member 4 is simple, facilitating assembly and having stable operation; the circuit breaker locking member 8 can prevent the operating member 1 from moving in the closing direction of the circuit breaker when the plug-in miniature circuit breaker is not installed or not installed in place, which is beneficial to further improving the electrical safety.

[0060] The following is an embodiment of the plug-in miniature circuit breaker of the present invention.

[0061] As Figure 1 、 3 、8, 11, 13, 16, 19, 20, 25 show, the plug-in miniature circuit breaker of the present invention includes a housing 6, an operating mechanism and a contact system. The operating mechanism includes an operating member 1 with one end inserted into the housing 6 and the other end protruding outside the housing 6. The contact system includes a moving contact 900c with one end connected to the operating mechanism and a static contact 910c cooperating with the moving contact 900c. Specifically, as Figure 3 shown in the direction, for the plug-in miniature circuit breaker of the present invention, both the operating mechanism and the contact system are arranged in the housing 6. The operating mechanism is arranged in the upper part of the housing 6, and the contact system is arranged below the operating mechanism. The operating member 1 of the operating mechanism is inserted into the upper end of the housing 6, the upper end of the operating member 1 protrudes above the housing 6, and the lower end is inserted into the housing 6. The moving contact 900c of the contact system is arranged below the operating mechanism and connected thereto, and the static contact 910c is arranged on the left side of the moving contact 900c and cooperates with it.

[0062] It should be noted that both the operating mechanism and the contact system can be realized by the prior art and will not be elaborated in detail here. Preferably, the operating mechanism includes an operating member 1, a first connecting rod 7, a transmission plate 100, a second connecting rod 200, a tripping latch 300, a locking latch 400 and a support plate. The lower end of the operating member 1 is connected to one end of the first connecting rod 7, the other end of the first connecting rod 7 is connected to the transmission plate 100, the transmission plate 100 is connected to the tripping latch 300 through the second connecting rod 200, the tripping latch 300 and the locking latch 400 are respectively rotatably arranged on the support plate, the tripping latch 300 and the locking latch 400 are in locking cooperation, and the support plate is connected to the moving contact 900c. Further, for the plug-in miniature circuit breaker of the present invention, pressing / pulling the operating member 1 can make the moving contact 900c and the static contact 910c close (switch on) / open (switch off) through the operating mechanism, or pressing the operating member 1 can make the moving contact 900c and the static contact 910c close / open through the operating mechanism. When pressing the operating member 1 makes the moving contact 900c and the static contact 910c open through the operating mechanism, the operating member 1 will automatically bounce up (i.e., bounce towards the outside of the housing 6).

[0063] Of course, as Figure 3 shown, the plug-in miniature circuit breaker of the present invention may further include a short-circuit protection device 600, an overload protection device 500, an arc extinguishing chamber 700, an outgoing line terminal 900, and an incoming line terminal 800. The outgoing line terminal 900 is disposed on the left side of the operating member 1. The short-circuit protection device 600 and the arc extinguishing chamber 700 are disposed below the operating mechanism. The arc extinguishing chamber 700 is located on the left side of the short-circuit protection device 600. The overload protection device 500 is disposed on the left side of the operating mechanism and above the arc extinguishing chamber 700. Preferably, the short-circuit protection device 600 is an electromagnetic release and is used in cooperation with the latch 400. The overload protection device 500 is a bimetal and is used in cooperation with the latch 400.

[0064] Preferably, as Figure 1-17 shown, the plug-in miniature circuit breaker of the present invention further includes a closing and opening indicating member 2 disposed in the housing 6 and used for indicating the closing and opening states of the plug-in miniature circuit breaker. The closing and opening indicating member 2 is disposed on one side of the operating member 1 and is linked and cooperated therewith. The housing 6 includes a closing and opening indicating window 62a disposed thereon. Pressing the operating member 1 causes the plug-in miniature circuit breaker to enter the closing state through the operating mechanism. The closing and opening indicating member 2 acts, and the closing state of the plug-in miniature circuit breaker is indicated through the closing and opening indicating window 62a. Further, as Figure 1-17 shown, the closing and opening indicating member 2 includes a tripping indicating surface 22 and a closing indicating surface 23 disposed thereon. When the plug-in miniature circuit breaker is in the tripping state, the tripping indicating surface 22 is visible through the closing and opening indicating window 62a. Pressing the operating member 1 causes the plug-in miniature circuit breaker to change from the tripping state to the closing state. The closing and opening indicating member 2 acts to make the closing indicating surface 23 visible through the closing and opening indicating window 62a. Further, as Figure 1-17 shown, the closing and opening indicating member 2 is pivotally disposed on the housing 6. Pressing the operating member 1 causes the plug-in miniature circuit breaker to change from the tripping state to the closing state. The closing and opening indicating member 2 rotates to make the closing indicating surface 23 visible through the closing and opening indicating window 62a.

[0065] Preferably, as Figure 1-17 shown, the closing and opening indicating member 2 is rotatably disposed at an inner corner of the housing 6. A chamfer structure is provided at the top corner of the housing 6 corresponding to the inner corner. The closing and opening indicating window 62a is provided on the chamfer structure.

[0066] Specifically, as Figure 1-5 shown in FIGS. 8-17, the closing and opening indicating member 2 is pivotally disposed at the right top corner of the upper end of the housing 6, on the right side of the operating member 1. A chamfer structure is provided at the connection between the upper side wall and the right side wall of the housing 6. The closing and opening indicating window 62a is provided on the chamfer structure. The closing and opening indicating window 62a is correspondingly disposed and used in cooperation with the closing and opening indicating member 2.

[0067] It should be noted that the closing and opening indicating member 2 is not limited to being pivotally arranged on the housing 6. The closing and opening indicating member 2 can also be arranged on the housing 6 in a manner of cooperation between a slide rail and a slideway. The operating member 1 drives the closing and opening indicating member 2 to move up and down to indicate the open / closed state of the plug-in miniature circuit breaker.

[0068] It should be noted that the "linkage cooperation between the closing and opening indicating member 2 and the operating member 1" in the present invention means that the closing and opening indicating member 2 and the operating member 1 move synchronously, or the closing and opening indicating member 2 moves following the movement of the operating member 1.

[0069] As Figure 1-7 shown, it is the first embodiment of the linkage cooperation between the closing and opening indicating member 2 and the operating member 1.

[0070] As Figure 2 and 4 shown, the closing and opening indicating member 2 includes a first indicating member limiting platform 21a arranged on one side thereof, and the operating member 1 includes a first operating member limiting boss 11a arranged on one side thereof. The first indicating member limiting platform 21a is in limiting cooperation with the first operating member limiting boss 11a. Press the operating member 1 to make the plug-in miniature circuit breaker enter the closed state from the open state. The first operating member limiting boss 11a moves to one side of the first indicating member limiting platform 21a, releasing the limiting cooperation with the first indicating member limiting platform 21a, and the closing and opening indicating member 2 rotates, making the closing indicating surface 23 visible through the closing and opening indicating window 62a.

[0071] Preferably, as Figure 4-7 shown, the closing and opening indicating member 2 is of a cylindrical structure, including a first indicating member limiting platform 21a arranged on one side thereof and a tripping indicating surface 22 and a closing indicating surface 23 arranged at the other end of the closing and opening indicating member 2. The middle of the closing and opening indicating member 2 is pivotally arranged on the housing 6. The first indicating member limiting platform 21a includes a first limiting plane 210a arranged on one side thereof. When the plug-in miniature circuit breaker enters the closed state (as Figure 4 shown) from the open state (as Figure 5 shown), the first operating member limiting boss 11a moves from one end of the first limiting plane 210a to the other end of the first limiting plane 210a until the first operating member limiting boss 11a disengages from the first limiting plane 210a, releasing the limiting cooperation between the first operating member limiting boss 11a and the first indicating member limiting platform 21a.

[0072] Preferably, as Figure 1-5As shown, the opening / closing indicating member 2 further includes an indicating member shaft hole 20 provided in the middle thereof. The opening / closing indicating member 2 is sleeved on the first mounting shaft 63 of the housing 6 through the indicating member shaft hole 20. The plug-in miniature circuit breaker further includes an indicating member torsion spring 3. The indicating member torsion spring 3 is sleeved on the first mounting shaft 63, with one end connected to the opening / closing indicating member 2 and the other end connected to the housing 6, providing power for the rotation of the opening / closing indicating member 2.

[0073] Specifically, as Figure 2 and 4 shown, the plug-in miniature circuit breaker is in the open state. The opening / closing indicating member 2 is arranged on the right side of the operating member 1. The first operating member limiting boss 11a is arranged on the right side of the operating member 1. The first indicating member limiting platform 21a is arranged on the left side of the opening / closing indicating member 2. The first limiting plane 210a is arranged on the left side of the first indicating member limiting platform 21a. The first operating member limiting boss 11a is in pressing fit with the upper end of the first limiting plane 210a, preventing the opening / closing indicating member 2 from rotating counterclockwise. At this time, the open indicating surface 22 of the opening / closing indicating member 2 faces the opening / closing indicating window 62a, and the open indicating surface 22 is visible through the opening / closing indicating window 62a. As Figure 5 shown, the plug-in miniature circuit breaker is in the closed state. The first operating member limiting boss 11a is located below the first indicating member limiting platform 21a (the first operating member limiting boss 11a is located below the lower end of the first limiting plane 210a). At this time, the closed indicating surface 23 of the opening / closing indicating member 2 faces the opening / closing indicating window 62a, and the closed indicating surface 23 is visible through the opening / closing indicating window 62a. Combining Figure 2 、 4 and 5, pressing the operating member 1 causes the plug-in miniature circuit breaker to change from the open state to the closed state through the operating mechanism. The operating member 1 drives the first operating member limiting boss 11a to move from the upper end of the first limiting plane 210a to the lower end of the first limiting plane 210a until the first operating member limiting boss 11a separates from the first limiting plane 210a, releasing the limiting cooperation between the first operating member limiting boss 11a and the first indicating member limiting platform 21a. The indicating member torsion spring 3 drives the opening / closing indicating member 2 to rotate counterclockwise, making the closed indicating surface 23 face the opening / closing indicating window 62a, and the closed indicating surface 23 is visible through the opening / closing indicating window 62a, indicating that the plug-in miniature circuit breaker is in the closed state.

[0074] As Figure 6 and 7 shown, it is the first embodiment of the opening / closing indicating member 2.

[0075] As Figure 6 and 7As shown, the opening and closing indicating member 2 is of a cylindrical structure, including a first indicating member limiting platform 21a provided on one side of the opening and closing indicating member 2, a tripping indicating surface 22, a closing indicating surface 23 provided on the other side of the opening and closing indicating member 2, and an indicating member shaft hole 20 provided in the middle of the opening and closing indicating member 2; both the tripping indicating surface 22 and the closing indicating surface 23 are arc surfaces, one end of the tripping indicating surface 22 is close to one end of the first indicating member limiting platform 21a, the other end is connected to the closing indicating surface 23, and the other end of the closing indicating surface 23 is close to the other end of the first indicating member limiting platform 21a; the length of the first indicating member limiting platform 21a > the outer diameter of the opening and closing indicating member 2, and a first limiting plane 210a is provided on one side of the first indicating member limiting platform 21a.

[0076] Specifically, as Figure 6 shown, the first indicating member limiting platform 21a is provided on the left side of the opening and closing indicating member 2 and to the left of the rotation center of the opening and closing indicating member 2, the tripping indicating surface 22 and the closing indicating surface 23 are provided on the right side of the opening and closing indicating member 2 and to the right of the rotation center of the opening and closing indicating member 2, the first limiting plane 210a is provided on the left side of the first indicating member limiting platform 21a, and the radius of the tripping indicating surface 22 > the radius of the closing indicating surface 23.

[0077] It should be noted that in order to make the tripping indicating surface 22 and the closing indicating surface 23 respectively correspond to the tripping state and the closing state of the plug-in miniature circuit breaker, the tripping indicating surface 22 and the closing indicating surface 23 can be of different colors or carry different text markings, or both have different colors and carry different text markings.

[0078] As Figure 8-12 shown, it is the second embodiment of the linkage cooperation between the opening and closing indicating member 2 and the operating member 1.

[0079] As Figure 8-12 shown, the opening and closing indicating member 2 includes a first indicating member driven boss 21b provided on one side thereof, the operating member 1 includes a first operating member driving boss 11b provided on one side thereof, and the first operating member driving boss 11b is in driving cooperation with the first indicating member driven boss 21b; pressing the operating member 1 causes the plug-in miniature circuit breaker to enter the closing state from the tripping state, and the first operating member driving boss 11b drives the opening and closing indicating member 2 to rotate through the first indicating member driven boss 21b, so that the closing indicating surface 23 is visible through the opening and closing indicating window 62a.

[0080] Specifically, as Figure 9 and 10As shown, the plug-in miniature circuit breaker is in the tripped state. A first operating member driving boss 11b is provided on the right side of the operating member 1, and a first indicating member driven boss 21b is provided on the left side of the closing and tripping indicating member 2. The first operating member driving boss 11b is disposed above the first indicating member driven boss 21b. At this time, the tripping indicating surface 22 of the closing and tripping indicating member 2 faces the closing and tripping indicating window 62a, and the tripping indicating surface 22 is visible through the closing and tripping indicating window 62a; As Figure 12 shown, the plug-in miniature circuit breaker is in the closed state. The first operating member driving boss 11b is located on the left side of the first indicating member driven boss 21b. At this time, the closing indicating surface 23 of the closing and tripping indicating member 2 faces the closing and tripping indicating window 62a, and the closing indicating surface 23 is visible through the closing and tripping indicating window 62a; Combining Figure 9 , 10 , 12, when the plug-in miniature circuit breaker changes from the tripped state to the closed state, the operating member 1 is pressed. The operating member 1 drives the closing and tripping indicating member 2 to rotate counterclockwise through the first operating member driving boss 11b and the first indicating member driven boss 21b, so that the closing indicating surface 23 is visible through the closing and tripping indicating window 62a.

[0081] As Figure 10 shown, it is the second embodiment of the closing and tripping indicating member 2.

[0082] The closing and tripping indicating member 2 is of a cylindrical structure, including a first indicating member driven boss 21b provided on one side of the closing and tripping indicating member 2, a tripping indicating surface 22 and a closing indicating surface 23 provided on the other side of the closing and tripping indicating member 2, and an indicating member shaft hole 20 provided in the middle of the closing and tripping indicating member 2. The closing and tripping indicating member 2 is sleeved on the first mounting shaft 63 of the housing 6 through the indicating member shaft hole 20; The plug-in miniature circuit breaker further includes an indicating member torsion spring 3. The indicating member torsion spring 3 is sleeved on the first mounting shaft 63, one end is connected to the closing and tripping indicating member 2, and the other end is connected to the housing 6 to provide power for the rotation of the indicating member 2. Further, both the tripping indicating surface 22 and the closing indicating surface 23 are arc-shaped surfaces. One end of the tripping indicating surface 22 is connected to one end of the closing indicating surface 23. The first indicating member driven boss 21b is located between the other end of the tripping indicating surface 22 and the other end of the closing indicating surface 23. Further, the radius of the tripping indicating surface 22 > the radius of the closing indicating surface 23.

[0083] Specifically, as Figure 10 shown, the first indicating member driven boss 21b is provided on the left side of the closing and tripping indicating member 2 and to the left of the rotation center of the closing and tripping indicating member 2. The tripping indicating surface 22 and the closing indicating surface 23 are provided on the right side of the closing and tripping indicating member 2 and to the right of the rotation center of the closing and tripping indicating member 2. Further, as Figure 10 shown, a torsion spring limiting protrusion connected to the indicating member torsion spring 3 is further provided at the front end of the closing and tripping indicating member 2.

[0084] As shown Figure 13-17 in FIG. [not provided], it is the third embodiment of the linkage cooperation between the opening / closing indicating member 2 and the operating member 1.

[0085] As shown Figure 13-17 in FIG. [not provided], the opening / closing indicating member 2 has a cylindrical structure and includes a plurality of circumferentially distributed indicating member teeth provided on the circumferential side surface of the opening / closing indicating member 2. The operating member 1 includes a plurality of operating member teeth arranged side by side on one side thereof. The indicating member teeth and the operating member teeth are meshed with each other. Pressing the operating member 1 causes the plug-in miniature circuit breaker to change from the open state to the closed state. Through the cooperation of the operating member teeth and the indicating member teeth, the opening / closing indicating member 2 is driven to rotate, so that the closing indicating surface 23 is visible through the opening / closing indicating window 62a.

[0086] As shown Figure 15 in FIG. [not provided], it is the third embodiment of the opening / closing indicating member 2.

[0087] The opening / closing indicating member 2 has a cylindrical structure and includes three indicating member teeth provided on one side thereof, an opening indicating surface 22 and a closing indicating surface 23 provided on the other side of the opening / closing indicating member 2, and an indicating member shaft hole 20 provided in the middle of the opening / closing indicating member 2. The three indicating member teeth are respectively a first indicating member tooth 21c1, a second indicating member tooth 21c2, and a third indicating member tooth 21c3 arranged in sequence. One end of the first indicating member tooth 21c1 is close to the opening indicating surface 22. The other end of the opening indicating surface 22 is connected to one end of the closing indicating surface 23. The other end of the closing indicating surface 23 is close to the third indicating member tooth 21c3. The opening / closing indicating member 2 is sleeved on the first mounting shaft 63 of the housing 6 through the indicating member shaft hole 20.

[0088] Preferably, as shown Figure 15 in FIG. [not provided], the operating member 1 includes three operating member teeth provided on one side thereof, which are respectively a first operating member tooth 11c1, a second operating member tooth 11c2, and a third operating member tooth 11c3 arranged in sequence. Specifically, the first operating member tooth 11c1, the second operating member tooth 11c2, and the third operating member tooth 11c3 are provided on one side from top to bottom.

[0089] Specifically, as shown Figure 14-15 in FIG. [not provided], the plug-in miniature circuit breaker is in the open state. A plurality of operating member teeth are distributed from top to bottom on the right side of the operating member 1. A plurality of indicating member teeth are axially distributed on the left side of the indicating member 2. The operating member teeth and the indicating member teeth are meshed with each other. At this time, the opening indicating surface 22 of the opening / closing indicating member 2 is opposite to the opening / closing indicating window 62a, and the opening indicating surface 22 is visible through the opening / closing indicating window 62a. As shown Figure 17 in FIG. [not provided], the plug-in miniature circuit breaker is in the closed state. At this time, the closing indicating surface 23 of the opening / closing indicating member 2; combinedFigure 14 , 15 17. When the plug - in miniature circuit breaker changes from the tripped state to the closed state, press the operating member 1 downward. The operating member 1 drives the indicating member 2 to rotate counterclockwise through the engagement of the operating member ratchet and the indicating member ratchet, so that the closing indication surface 23 faces the opening - closing indication window 62a, and the closing indication surface 23 is visible through the opening - closing indication window 62. Further, when the plug - in miniature circuit breaker is in the tripped state, the second indicating member ratchet 21c2 is located between the second operating member ratchet 11c2 and the third operating member ratchet 11c3, and the third operating member ratchet 11c3 is located between the second indicating member ratchet 21c2 and the third indicating member ratchet 21c3; when the plug - in miniature circuit breaker is in the closed state, the first indicating member ratchet 21c1 is located between the first operating member ratchet 11c1 and the second operating member ratchet 11c2.

[0090] Preferably, as Figure 18-29 shown, the plug - in miniature circuit breaker of the present invention further includes a positioning indication mechanism for indicating whether the plug - in miniature circuit breaker is installed in place.

[0091] Preferably, as Figure 18-24 shown, it is the first implementation manner of the positioning indication mechanism.

[0092] As Figure 18-24 shown, the housing 6 includes a positioning indication window 62b and an extension port 64 provided thereon; the positioning indication mechanism includes a driven protrusion 51 and a positioning indication end 4243 respectively provided at both ends thereof. The driven protrusion 51 protrudes outside the housing 6 through the extension port 64, and the positioning indication end 4243 is disposed opposite to the positioning indication window 62b; after the plug - in miniature circuit breaker is installed in the circuit breaker assembly position and installed in place, the housing at the circuit breaker assembly position squeezes the driven protrusion 51, so that the positioning indication end 4243 indicates that the plug - in miniature circuit breaker is in the installed - in - place state through the positioning indication window 62b. Further, as Figure 18-24 shown, the positioning indication end 4243 includes a warning surface 42 and a positioning indication surface 43; when the plug - in miniature circuit breaker is not installed or is installed in the circuit breaker assembly position but not installed in place, the warning surface 42 is visible through the positioning indication window 62b, indicating that the plug - in miniature circuit breaker is in the not - installed - in - place state; after the plug - in miniature circuit breaker is installed in the circuit breaker assembly position and installed in place, the positioning indication surface 43 is visible through the positioning indication window 62b, indicating that the plug - in miniature circuit breaker is in the installed - in - place state. Further, as Figure 18-24 shown, the positioning indication mechanism includes a positioning indication member 4 and a positioning linkage member 5 respectively pivotally provided on the housing 6. One end of the positioning indication member 4 is provided with a positioning indication end 4243, and the other end is in driving cooperation with the positioning linkage member 5. The other end of the positioning linkage member 5 is provided with a driven protrusion 51.

[0093] Specifically, as Figure 18-24 shown, the in-place indicating window 62b is provided at the right-angled top corner of the upper end of the housing 6, and the outlet 64 is provided on the right side wall of the housing 6; the in-place indicating member 4 is pivotally provided at the right-angled top corner of the upper end of the housing 6, the in-place linkage member 5 is pivotally provided on the right side of the housing 6 and below the in-place indicating member 4. The upper end of the in-place indicating member 4 is provided with an in-place indicating end 4243, and the lower end is in driving cooperation with the in-place linkage member 5. The lower end of the in-place linkage member 5 is provided with a driven protrusion 51, and the driven protrusion 51 protrudes from the right side of the housing 6 through the outlet 64; after the plug-in miniature circuit breaker is assembled to the circuit breaker assembly position and installed in place, the housing at the circuit breaker assembly position presses the driven protrusion 51 to move it inward of the housing 6, causing the in-place linkage member 5 to rotate clockwise. The upper end of the in-place linkage member 5 drives the lower end of the in-place indicating member 4 to cause the in-place indicating member 4 to rotate counterclockwise, so that the in-place indicating surface 43 of the in-place indicating end 4243 faces the in-place indicating window 62b, and the in-place indicating surface 43 is visible through the in-place indicating window 62b, indicating that the plug-in miniature circuit breaker is in the installed-in-place state. Further, as Figure 19 , 21 , as shown in 23, a chamfer structure is provided at the connection between the upper side wall and the right side wall of the housing 6, and the in-place indicating window 62b is provided on the chamfer structure.

[0094] Preferably, as Figure 19 shown, the in-place indicating member 4 is pivotally provided on the housing 6 through the second mounting shaft 63 of the housing 6, that is, the in-place indicating member 4 is coaxially installed with the closing and opening indicating member 2, which is beneficial to simplifying the installation structure and operation of the plug-in miniature circuit breaker of the present invention, beneficial to simplifying the structure of the housing 6, and saving the production cost of the housing 6.

[0095] Preferably, as Figure 22-23 shown, the in-place linkage member 5 further includes a circuit breaker locking protrusion 53 provided on one side of the in-place driving protrusion 52. The circuit breaker locking protrusion 53 is in limit cooperation with the operating mechanism to prevent the operating member 1 from moving in the circuit breaker closing direction (prevent the operating member 1 from moving downward); after the plug-in miniature circuit breaker is installed to the circuit breaker assembly position and installed in place, the housing at the circuit breaker assembly position presses the driven protrusion 51, causing the in-place linkage member 5 to rotate and releasing the limit cooperation between the circuit breaker locking protrusion 53 and the operating mechanism; further, as Figure 22-23 shown, the operating mechanism further includes a first link 7, and the first link 7 includes a first end 70 of the link inserted on the operating member 1; the operating member 1 is in limit cooperation with the circuit breaker locking protrusion 53, or the first end 70 of the link is in limit cooperation with the circuit breaker locking protrusion 53.

[0096] Specifically, as Figure 22-23As shown, the circuit breaker locking projection 53 is arranged on the left side of the in-place driving projection 52, below the first end 70 of the connecting rod and in limit cooperation with it, preventing the operating member 1 from moving downward. After the plug-in miniature circuit breaker is installed on the circuit breaker assembly and installed in place, the housing at the circuit breaker assembly position presses the actuated projection 51 to move it into the housing 6, causing the in-place linkage member 5 to rotate clockwise. The circuit breaker locking projection 53 moves to the right side of the first end 70 of the connecting rod, releasing the limit cooperation with the first end 70 of the connecting rod. Pressing the operating member 1 downward can close the plug-in miniature circuit breaker through the operating mechanism.

[0097] Preferably, as Figure 18-24 shown, the middle part of the in-place indicating member 4 is pivotally arranged on the housing 6, including an in-place indicating end 42, 43 and an actuated projection 41 respectively arranged at both ends thereof; the middle part of the in-place linkage member 5 is pivotally arranged on the housing 6, including an in-place driving projection 52 and an actuated projection 51 respectively arranged at both ends thereof, and the in-place driving projection 52 is in driving cooperation with the actuated projection 41.

[0098] As Figure 24 shown, it is the first embodiment of the in-place indicating member 4.

[0099] The in-place indicating member 4 includes a rotating disk 40, and an in-place indicating end 42, 43 and an actuated projection 41 respectively arranged at both ends of the rotating disk 40; a in-place indicating member shaft hole is provided in the middle of the rotating disk 40, and the rotating disk 40 is sleeved on the first mounting shaft 63 of the housing 6 through the in-place indicating member shaft hole; the in-place indicating end 42, 43 includes a warning surface 42 and an in-place indicating surface 43, both the warning surface 42 and the in-place indicating surface 43 are arc surfaces, and the radius of the warning surface 42 > the radius of the in-place indicating surface 43. Further, the warning surface 42 and the in-place indicating surface 43 can be of different colors to indicate the non-installed-in-place state and the installed-in-place state of the circuit breaker, or different text markings are carried on the warning surface 42 and the in-place indicating surface 43 to indicate the non-installed-in-place state and the installed-in-place state of the circuit breaker. Of course, different colors and text markings can be respectively provided on the warning surface 42 and the in-place indicating surface 43.

[0100] It should be noted that the in-place indicating member 4 may not be provided with the in-place indicating surface 43, but only the warning surface 42 is provided. When the warning surface 42 cannot be seen through the in-place indicating window 62b, it means that the plug-in miniature circuit breaker is in the installed-in-place state, which is beneficial to simplifying the structure of the in-place indicating member 4 and saving costs.

[0101] As Figure 22-23 shown, it is an embodiment of the in-place linkage member 5.

[0102] The in-place linkage member 5 is a rod-shaped structure, including an in-place driving protrusion 52 and a driven protrusion 51 respectively provided at both ends thereof, and a circuit breaker locking protrusion 53 provided on one side of the in-place driving protrusion 52; the driven protrusion 51 and the circuit breaker locking protrusion 53 are respectively located on both sides of the in-place linkage member 5, the driven protrusion 51 is located on one side of the rotation center of the in-place linkage member 5, and the circuit breaker locking protrusion 53 and the in-place driving protrusion 52 are located on the other side of the rotation center of the in-place linkage member 5.

[0103] As Figure 25-27 shown, it is the second embodiment of the in-place indicating mechanism.

[0104] The housing 6 includes an in-place indicating window 62b and an extension port 64 provided thereon; the in-place indicating mechanism includes an in-place indicating member 4, the middle part of the in-place indicating member 4 is pivotally arranged on the housing 6, the in-place indicating member 4 includes an indicating end 4cd and an indicating member driven end 4a respectively provided at both ends thereof, the indicating end 4cd is arranged opposite to the in-place indicating window 62b, and the indicating member driven end 4a protrudes outside the housing 6 through the extension port 64; after the plug-in miniature circuit breaker is installed to the circuit breaker assembly position and installed in place, the housing at the circuit breaker assembly position presses the indicating member driven end 4a, so that the indicating end 4cd indicates that the plug-in miniature circuit breaker is in the installed-in-place state through the in-place indicating window 62b. Further, the indicating end 4cd includes a warning side surface 4c and an in-place indicating side surface 4d; when the plug-in miniature circuit breaker is not installed or the plug-in miniature circuit breaker is installed to the circuit breaker assembly position and not installed in place, the warning side surface 4c is visible through the indicating window 62b, indicating that the plug-in miniature circuit breaker is not installed in place; after the plug-in miniature circuit breaker is installed to the circuit breaker assembly position and installed in place, the in-place indicating side surface 4d is visible through the in-place indicating window 62b, indicating that the plug-in miniature circuit breaker is in the installed-in-place state.

[0105] Specifically, as Figure 25-27 shown, the indicating end 4cd and the indicating member driven end 4a are respectively arranged at the upper and lower ends of the in-place indicating member 4, and the middle part of the in-place indicating member 4 is pivotally arranged on the housing 6; as Figure 25-26 shown, the plug-in miniature circuit breaker is not installed or installed to the circuit breaker assembly position and not installed in place. At this time, the warning side surface 4c of the indicating end 4cd is opposite to the in-place indicating window 62b, and the warning side surface 4c is visible through the in-place indicating window 62b; as Figure 27 shown, the plug-in miniature circuit breaker is installed to the circuit breaker assembly position and installed in place. At this time, the in-place indicating side surface 4d of the indicating end 4cd is opposite to the in-place indicating window 62b, and the in-place indicating side surface 4d is visible through the in-place indicating window 62b; combined with Figure 25-27When the plug-in miniature circuit breaker changes from the state of not being installed in place to the state of being installed in place, the housing at the circuit breaker assembly position presses the driven end 4a of the indicating member to move it into the housing 6, causing the in-place indicating member 4 to rotate clockwise. The indicating end 4cd moves to the right, making the in-place indicating side 4d visible through the in-place indicating window 62b.

[0106] Preferably, as Figure 25-27 shown, the in-place indicating member 4 further includes a circuit breaker locking boss 4b. The circuit breaker locking boss 4b is in limit cooperation with the operating mechanism to prevent the operating member 1 from moving in the closing direction of the circuit breaker (prevent the operating member 1 from moving downward). After the plug-in miniature circuit breaker is installed in the circuit breaker assembly position and is in place, the housing at the circuit breaker assembly position presses the driven end 4a of the indicating member, causing the in-place indicating member 4 to rotate, releasing the limit cooperation between the operating mechanism and the circuit breaker locking boss 4b. Pressing the operating member 1 causes the moving contact 900c to be closed with the static contact 910c through the operating mechanism. Further, as Figure 25-27 shown, the operating member 1 includes a connecting rod mounting table 12 provided on one side thereof. The first connecting rod 7 of the operating mechanism includes a first end 70 of the connecting rod inserted into the connecting rod mounting table 12. The connecting rod mounting table 12 is in limit cooperation with the circuit breaker locking boss 4b, or the first end 70 of the connecting rod is in limit cooperation with the circuit breaker locking boss 4b.

[0107] Specifically, as Figure 25-27 shown, a connecting rod mounting table 12 is provided on the right side of the operating member 1. A jack 120 for inserting the first connecting rod 7 is provided on the connecting rod mounting table 12. A circuit breaker locking boss 4b is provided on the left side of the in-place indicating member 4. The circuit breaker locking boss 4b is located below the connecting rod mounting table 12 or below the first end 70 of the connecting rod and is in limit cooperation with the connecting rod mounting table 12 or the first end 70 of the connecting rod. After the plug-in miniature circuit breaker is installed in the circuit breaker assembly position and is in place, the housing at the circuit breaker assembly position presses the driven end 4a of the indicating member to move it into the housing 6. The in-place indicating member 4 rotates clockwise, causing the circuit breaker locking boss 4b to move to the right side of the connecting rod mounting table 12 or the first end 70 of the connecting rod, releasing the limit cooperation with the connecting rod mounting table 12 or the first end 70 of the connecting rod. Of course, it can also be that other parts of the operating member 1 are in limit cooperation with the circuit breaker locking boss 4b. When the in-place indicating member 4 rotates clockwise, the operating member 1 comes into contact with the circuit breaker locking boss 4b for limit cooperation.

[0108] As Figure 26 shown, it is the second embodiment of the in-place indicating member 4.

[0109] The in-place indicator 4 includes an indicating end 4cd, a driven end 4a of the indicator, and a circuit breaker locking boss 4b. The indicating end 4cd and the driven end 4a of the indicator are respectively arranged at the upper and lower ends of the in-place indicator 4. The circuit breaker locking boss 4b is arranged in the middle of the in-place indicator 4. The circuit breaker locking boss 4b and the driven end 4a of the indicator are respectively located on both sides of the in-place indicator 4. The circuit breaker locking boss 4b is located between the rotation center of the in-place indicator 4 and the indicating end 4cd. Further, the in-place indicator 4 is pivotally arranged on the housing 6 through a second mounting shaft 65 of the housing 6. Specifically, as Figure 26 shown in the direction, the indicating end 4cd and the driven end 4a of the indicator are respectively arranged at the upper and lower ends of the in-place indicator 4. The circuit breaker locking boss 4b and the driven end 4a of the indicator are respectively located on the left and right sides of the in-place indicator 4. The circuit breaker locking boss 4b is located below the indicating end 4cd and above the rotation center of the in-place indicator 4. As Figure 28-29 shown, it is the third embodiment of the in-place indicating mechanism. The difference between the in-place indicating mechanism of this embodiment and the second embodiment is that: it further includes a circuit breaker locking member 8, and the in-place indicator 4 does not have a circuit breaker locking boss 4b; the circuit breaker locking member 8 includes a locking boss 81 and a driven end 80 of the locking member respectively arranged at both ends thereof. The locking boss 81 is in limit cooperation with the operating mechanism to prevent the operating member 1 from moving in the closing direction of the circuit breaker. After the plug-in miniature circuit breaker is installed to the circuit breaker assembly position and installed in place, the housing at the circuit breaker assembly position presses the driven end 80 of the locking member, so that the circuit breaker locking member 8 rotates to release the limit cooperation between the locking boss 81 and the operating mechanism, and pressing the operating member 1 closes the moving contact 900c and the static contact 910c through the operating mechanism. Further, the operating member 1 includes a connecting rod mounting table 12 arranged on one side thereof. The first connecting rod 7 of the operating mechanism includes a first end 70 of the connecting rod inserted into the connecting rod mounting table 12. The connecting rod mounting table 12 is in limit cooperation with the locking boss 81, or the first end 70 of the connecting rod is in limit cooperation with the locking boss 81.

[0110] Preferably, as Figure 28-29 shown, both the in-place indicator 4 and the circuit breaker locking member 8 are pivotally arranged on the housing 6 through the second mounting shaft 65.

[0111] The above content is a further detailed description of the present invention in combination with specific preferred embodiments. It cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, without departing from the concept of the present invention, several simple deductions or substitutions can still be made, which should all be regarded as belonging to the protection scope of the present invention.

Claims

1. A plug-in miniature circuit breaker, which comprises a housing (6); characterized in that: The housing (6) includes an in-place indication window (62b) and an outlet (64) provided thereon; the plug-in miniature circuit breaker further includes an in-place indication mechanism, the in-place indication mechanism includes a driven protrusion (51) and an in-place indication end (4243) respectively provided at both ends thereof, the driven protrusion (51) protrudes outside the housing (6) through the outlet (64), and the in-place indication end (4243) is disposed opposite to the in-place indication window (62b); after the plug-in miniature circuit breaker is installed to the circuit breaker assembly position and installed in place, the housing at the circuit breaker assembly position squeezes the driven protrusion (51), so that the in-place indication end (4243) indicates that the plug-in miniature circuit breaker is in the installed-in-place state through the in-place indication window (62b).

2. The plug-in miniature circuit breaker according to claim 1, characterized in that: The in-place indication end (4243) includes a warning surface (42) and an in-place indication surface (43); when the plug-in miniature circuit breaker is not installed and when the plug-in miniature circuit breaker is installed to the circuit breaker assembly position but not installed in place, the warning surface (42) is visible through the in-place indication window (62b), indicating that the plug-in miniature circuit breaker is in the not-installed-in-place state; after the plug-in miniature circuit breaker is installed to the circuit breaker assembly position and installed in place, the in-place indication surface (43) is visible through the in-place indication window (62b), indicating that the plug-in miniature circuit breaker is in the installed-in-place state.

3. The plug-in miniature circuit breaker according to claim 1 or 2, characterized in that: The in-place indication mechanism includes an in-place indication member (4) and an in-place linkage member (5) respectively pivotally provided on the housing (6), one end of the in-place indication member (4) is provided with an in-place indication end (4243), the other end is in driving cooperation with one end of the in-place linkage member (5), and the other end of the in-place linkage member (5) is provided with a driven protrusion (51).

4. The plug-in miniature circuit breaker according to claim 3, characterized in that: The middle of the in-place indication member (4) is pivotally provided on the housing (6), and includes an in-place indication end (4243) and an in-place driven protrusion (41) respectively provided at both ends thereof; the middle of the in-place linkage member (5) is pivotally provided on the housing (6), and includes an in-place driving protrusion (52) and a driven protrusion (51) respectively provided at both ends thereof, and the in-place driving protrusion (52) is in driving cooperation with the in-place driven protrusion (41); After the plug-in miniature circuit breaker is installed to the circuit breaker assembly position and installed in place, the housing at the circuit breaker assembly position squeezes the driven protrusion (51) to rotate the in-place linkage member (5), and the in-place linkage member (5) drives the in-place indication member (4) to rotate through the in-place driving protrusion (52) and the in-place driven protrusion (41), so that the in-place indication surface (43) of the indication end (4243) is visible through the in-place indication window (62b), indicating that the plug-in miniature circuit breaker is in the installed-in-place state.

5. The plug-in miniature circuit breaker according to claim 4, characterized in that: It further includes an operating mechanism and a contact system, the operating mechanism includes an operating member (1) with one end inserted into the housing (6) and the other end protruding outside the housing (6), the contact system includes a moving contact (900c) with one end connected to the operating mechanism and a static contact (910c) used in cooperation with the moving contact (900c); The in-place linkage member (5) further includes a circuit breaker locking projection (53) provided on one side of the in-place driving projection (52). The circuit breaker locking projection (53) is in limit cooperation with the operating mechanism to prevent the operating member (1) from moving in the closing direction of the circuit breaker. After the plug-in miniature circuit breaker is installed in the circuit breaker assembly position and installed in place, the housing of the circuit breaker assembly position presses the driven projection (51), causing the in-place linkage member (5) to rotate and releasing the limit cooperation between the circuit breaker locking projection (53) and the operating mechanism.

6. The plug-in miniature circuit breaker according to claim 5, characterized in that: The operating mechanism further includes a first connecting rod (7). The first connecting rod (7) includes a first end of the connecting rod (70) inserted on the operating member (1). The operating member (1) is in limit cooperation with the circuit breaker locking projection (53), or the first end of the connecting rod (70) is in limit cooperation with the circuit breaker locking projection (53).

7. The plug-in miniature circuit breaker according to claim 5, characterized in that: It further includes a closing and opening indicating member (2) provided in the housing (6) and used to indicate the closing and opening states of the plug-in miniature circuit breaker. The closing and opening indicating member (2) is provided on one side of the operating member (1) and is in linkage cooperation with it. Pressing the operating member (1) causes the plug-in miniature circuit breaker to enter the closing state through the operating mechanism. The closing and opening indicating member (2) acts and indicates the closing state of the plug-in miniature circuit breaker through the closing and opening indicating window (62a).

8. The plug-in miniature circuit breaker according to claim 7, characterized in that: The closing and opening indicating member (2) includes a tripping indicating surface (22) and a closing indicating surface (23) provided thereon. The housing (6) includes a closing and opening indicating window (62a) provided thereon and cooperating with the closing and opening indicating member (2). When the plug-in miniature circuit breaker is in the tripping state, the tripping indicating surface (22) is visible through the closing and opening indicating window (62a). Pressing the operating member (1) causes the plug-in miniature circuit breaker to enter the closing state from the tripping state. The closing and opening indicating member (2) acts to make the closing indicating surface (23) visible through the closing and opening indicating window (62a).

9. The plug-in miniature circuit breaker according to claim 8, characterized in that: The closing and opening indicating member (2) is pivotally provided on the housing (6). After pressing the operating member (1) to cause the plug-in miniature circuit breaker to enter the closing state from the tripping state, the closing and opening indicating member (2) rotates to make the closing indicating surface (23) visible through the closing and opening indicating window (62a).

10. The plug-in miniature circuit breaker according to any one of claims 7-9, characterized in that: The closing and opening indicating member (2) includes a first indicating member limiting platform (21a) provided on one side thereof. The operating member (1) includes a first operating member limiting boss (11a) provided on one side thereof. The first indicating member limiting boss (21) is in limit cooperation with the first operating member limiting boss (11a). Pressing the operating member (1) to cause the plug-in miniature circuit breaker to enter the closing state from the tripping state, the first operating member limiting boss (11a) moves to one side of the first indicating member limiting platform (21a), releasing the limit cooperation with the first indicating member limiting platform (21a), and the closing and opening indicating member (2) rotates to make the closing indicating surface (23) visible through the closing and opening indicating window (62a).

11. The plug-in miniature circuit breaker according to claim 7, wherein: Both the in-place indicating member (4) and the closing and opening indicating member (2) are pivotally provided on the housing (6) through the first mounting shaft (63) of the housing (6).

12. The plug-in miniature circuit breaker according to claim 7, characterized in that: The housing (6) further includes an operating member socket (66) provided thereon. The side wall of the housing (6) provided with the operating member socket (66) is the first side wall, and the side wall of the housing (6) provided with the extension port (64) is the second side wall. One end of the first side wall is bent and connected to one end of the second side wall. The opening / closing indication window (62a) and the in-place indication window (62b) are both provided at the connection of the first side wall and the second side wall.

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