Plug-in miniature circuit breaker

Abstract

The present invention relates to the field of low-voltage electrical appliances, and in particular to a plug-in miniature circuit breaker, wherein an operating mechanism comprises an operating member with one end inserted in a shell and the other end protruding from the outside of the shell, and a contact system comprises a moving contact connected to the operating mechanism at one end and a static contact used in conjunction with the moving contact; the shell comprises an opening and closing indication window arranged thereon; and further comprises an opening and closing indication member arranged in the shell and used to indicate the opening and closing state of the plug-in miniature circuit breaker, wherein the opening and closing indication member is arranged on one side of the operating member and cooperates with the operating member; pressing the operating member causes the plug-in miniature circuit breaker to enter a closing state through the operating mechanism, and causes the opening and closing indication member to actuate, and indicates the closing state of the plug-in miniature circuit breaker through the opening and closing indication window; the plug-in miniature circuit breaker of the present invention has an opening and closing indication member arranged on one side of the operating member, and cooperates with the opening and closing indication window on the shell, so as to intuitively and clearly indicate the opening and closing state of the circuit breaker.

Description

Technical Field

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

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

[0003] 1. The opening and closing indicators of existing plug-in small circuit breakers are mostly arranged inside the operating part. When the circuit breaker is opened and closed, the opening and closing conditions inside the circuit breaker cannot be observed in time due to the obstruction of the body.

[0004] 2. Existing plug-in miniature circuit breakers only indicate the working status of the circuit breaker, but cannot indicate whether the circuit breaker is properly installed when it is installed. A circuit breaker that is not properly installed is difficult to ensure stability during operation and is very likely to fall out of the installation position, affecting the continuity and stability of the circuit. Summary of the invention

[0005] The object of the present invention is to overcome the defects of the prior art and provide a plug-in miniature circuit breaker, wherein the opening and closing indicator is arranged on one side of the operating member and cooperates with the opening and closing indicator window on the housing to intuitively and clearly indicate the opening and closing status of the circuit breaker.

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

[0007] A plug-in miniature circuit breaker, comprising a housing 6, an operating mechanism and a contact system, wherein the operating mechanism comprises an operating member 1 with one end inserted into the housing 6 and the other end protruding from the outside of the housing 6, and the contact system comprises a moving contact 900c with one end connected to the operating mechanism and a stationary contact 910c used in conjunction with the moving contact 900c;

[0008] The housing 6 includes an opening and closing indication window 62a arranged thereon; the plug-in small circuit breaker also includes an opening and closing indicator 2 arranged in the housing 6 and used to indicate the opening and closing state of the plug-in small circuit breaker, and the opening and closing indicator 2 is arranged on one side of the operating member 1 and cooperates with it; pressing the operating member 1 causes the plug-in small circuit breaker to enter the closing state through the operating mechanism, and causes the opening and closing indicator 2 to operate, and indicates the closing state of the plug-in small circuit breaker through the opening and closing indication window 62a.

[0009] Preferably, the opening and closing indicator 2 comprises an opening indication surface 22 and a closing indication surface 23 arranged thereon;

[0010] When the plug-in miniature circuit breaker is in the open state, the open indication surface 22 is visible through the open and close indication window 62a. Pressing the operating member 1 causes the plug-in miniature circuit breaker to enter the closed state from the open state, and the open and close indication member 2 is actuated to make the closed indication surface 23 visible through the open and close indication window 62a.

[0011] Preferably, the opening and closing indicator 2 is pivotally arranged on the housing 6, and the operating member 1 is pressed to make the plug-in miniature circuit breaker enter the closing state from the opening state, and the opening and closing indicator 2 rotates to make the closing indication surface 23 visible through the opening and closing indication window 62a.

[0012] Preferably, when the plug-in miniature circuit breaker is in the closed state, when the pull-out operating member 1 causes the plug-in miniature circuit breaker to enter the open state through the operating mechanism, the operating member 1 drives the opening and closing indicator 2 to rotate, so that the opening indicator surface 22 is visible through the opening and closing indicator window 62a;

[0013] Alternatively, when the plug-in miniature circuit breaker is in the closed state, pressing the operating member 1 causes the plug-in miniature circuit breaker to enter the open state through the operating mechanism, and at the same time the operating member 1 pops up, and the operating member 1 drives the opening and closing indicator 2 to rotate, so that the opening indicator surface 22 is visible through the opening and closing indicator window 62.

[0014] Preferably, the opening and closing indicator 2 includes a first indicator limit platform 21a arranged on one side thereof, and the operating member 1 includes a first operating member limit boss 11a arranged on one side thereof, and the first indicator limit platform 21a is limitedly matched with the first operating member limit boss 11a; pressing the operating member 1 causes the plug-in small circuit breaker to enter the closed state from the opening state, and the first operating member limit boss 11a moves to one side of the first indicator limit platform 21a, releasing the limit cooperation with the first indicator limit platform 21a, and the opening and closing indicator 2 rotates, so that the closing indication surface 23 is visible through the opening and closing indication window 62a.

[0015] Preferably, the opening and closing indicator 2 is a cylindrical structure, including a first indicator limiting platform 21a arranged on one side thereof, and an opening indicating surface 22 and a closing indicating surface 23 arranged on the other side of the opening and closing indicator 2. The middle part of the opening and closing indicator 2 is pivotally arranged on the housing 6, and the first indicator limiting platform 21a includes a first limiting plane 210a arranged on one side thereof;

[0016] The plug-in small circuit breaker enters the closed state from the open state, and 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 is separated from the first limiting plane 210a, thereby releasing the limiting cooperation between the first operating member limiting boss 11a and the first indicator member limiting platform 21a.

[0017] Preferably, the opening and closing indicator 2 also includes an indicator shaft hole 20 arranged in the middle thereof, and the opening and closing indicator 2 is sleeved on the first mounting shaft 63 of the housing 6 through the indicator shaft hole 20; the opening indication surface 22 and the closing indication surface 23 are both arc-shaped surfaces, and one end of the opening indication surface 22 is connected to one end of the closing indication surface 23; the plug-in small circuit breaker also includes an indicator torsion spring 3, which is sleeved on the first mounting shaft 63, one end of which is connected to the opening and closing indicator 2, and the other end is connected to the housing 6, providing rotational power for the opening and closing indicator 2.

[0018] Preferably, the switch opening and closing indicator 2 includes a first indicator actuated boss 21b disposed on one side thereof, and the operating member 1 includes a first operating member driving boss 11b disposed on one side thereof, and the first operating member driving boss 11b is drivingly matched with the first indicator actuated boss 21b;

[0019] Pressing the operating member 1 causes the plug-in miniature circuit breaker to enter the closed state from the open state, and the first operating member driving boss 11b drives the opening and closing indicator 2 to rotate through the first indicator driven boss 21b, so that the closing indicator surface 23 is visible through the opening and closing indicator window 62a.

[0020] Preferably, the opening and closing indicator 2 is a cylindrical structure, including a first indicator actuated boss 21b arranged on one side of the opening and closing indicator 2, an opening indicating surface 22 and a closing indicating surface 23 arranged on the other side of the opening and closing indicator 2, and an indicator shaft hole 20 arranged in the middle of the opening and closing indicator 2, and the opening and closing indicator 2 is sleeved on the first mounting shaft 63 of the housing 6 through the indicator shaft hole 20; the opening indicating surface 22 and the closing indicating surface 23 are both arc-shaped surfaces, one end of the opening indicating surface 22 is connected to one end of the closing indicating surface 23, and the first indicator actuated boss 21b is located between the other end of the opening indicating surface 22 and the other end of the closing indicating surface 23; the plug-in small circuit breaker also includes an indicator torsion spring 3, which is sleeved on the first mounting shaft 63, one end of which is connected to the opening and closing indicator 2, and the other end is connected to the housing 6.

[0021] Preferably, the switch-on / off indicator 2 is a cylindrical structure, including a plurality of circumferentially distributed indicator teeth arranged on the side of the switch-on / off indicator 2 ring, and the operating member 1 includes a plurality of side-by-side operating member teeth arranged on one side thereof, and the indicator teeth and the operating member teeth are meshed with each other;

[0022] Pressing the operating member 1 causes the plug-in miniature circuit breaker to enter the closed state from the open state, and the opening and closing indicator 2 is driven to rotate through the cooperation of the operating member teeth and the indicator teeth, so that the closing indicator surface 23 is visible through the opening and closing indicator window 62a.

[0023] Preferably, the opening and closing indicator 2 is a cylindrical structure, including three indicator teeth arranged on one side thereof, an opening indication surface 22 and a closing indication surface 23 arranged on the other side of the opening and closing indicator 2, and an indicator shaft hole 20 arranged in the middle of the opening and closing indicator 2; the three indicator teeth are a first indicator tooth 21c1, a second indicator tooth 21c2 and a third indicator tooth 21c3 arranged in sequence, the first indicator tooth 21c1 is close to one end of the opening indication surface 22, the other end of the opening indication surface 22 is connected to one end of the closing indication surface 23, and the other end of the closing indication surface 23 is close to the third indicator tooth 21c3; the opening and closing indicator 2 is sleeved on the first mounting shaft 63 of the housing 6 through the indicator shaft hole 20.

[0024] Preferably, the operating member 1 includes three operating member teeth arranged on one side thereof, which are a first operating member tooth 11c1, a second operating member tooth 11c2 and a third operating member tooth 11c3 arranged in sequence;

[0025] When the plug-in miniature circuit breaker is in the open state, the second indicator tooth 21c2 is located between the second operating member tooth 11c2 and the third operating member tooth 11c3, and the third operating member tooth 11c3 is located between the second indicator tooth 21c2 and the third indicator tooth 21c3; when the plug-in miniature circuit breaker is in the closed state, the first indicator tooth 21c1 is located between the first operating member tooth 11c1 and the second operating member tooth 11c2.

[0026] Preferably, the opening and closing indicator 2 is rotatably arranged at an inner corner of the housing 6, and a chamfered structure is provided at the top corner of the housing 6 corresponding to the inner corner, and an opening and closing indicator window 62a is provided on the chamfered structure.

[0027] The plug-in small circuit breaker of the present invention has an opening and closing indicator that cooperates with the operating part, so that the action of the opening and closing indicator is directly controlled by the operating part, and can accurately indicate the opening and closing state of the plug-in small circuit breaker, thereby improving the safety of electricity use; the opening and closing indicator is arranged on one side of the operating part, and cooperates with the opening and closing indicator window of the housing to indicate the opening and closing state of the plug-in small circuit breaker, which is more intuitive and clear. In addition, the opening and closing indicator is pivotally arranged on the housing, which is conducive to reducing the assembly space and action space of the opening and closing indicator, saving the internal space of the circuit breaker, and is conducive to the miniaturization of the plug-in small circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the projection structure of the plug-in miniature circuit breaker of the present invention, showing the structure of the first embodiment of the linkage cooperation between the opening and closing indicator and the operating member;

[0029] Figure 2 The present invention Figure 1 The enlarged structural diagram of part A at least shows the coordination relationship between the operating element and the opening and closing indicator when the circuit breaker is in the open state;

[0030] Figure 3 It is a three-dimensional structural schematic diagram of the plug-in miniature circuit breaker of the present invention, and at least shows the structure of the second embodiment of the linkage cooperation between the opening and closing indicator and the operating member;

[0031] Figure 4 The present invention Figure 3 The enlarged structural diagram of part B at least shows the coordination relationship between the operating member and the opening and closing indicator when the circuit breaker is in the open state;

[0032] Figure 5 It is a schematic diagram of the projection structure of the first embodiment of the linkage between the opening and closing indicator and the operating element of the present invention, showing the coordination relationship between the operating element and the opening and closing indicator when the circuit breaker is in the closed state;

[0033] Figure 6 It is a schematic structural diagram of a first embodiment of a switch opening and closing indicator of the present invention, and at least shows the structure of a limiting platform of a first indicator;

[0034] Figure 7 It is a schematic structural diagram of a first embodiment of an opening and closing indicator of the present invention, and at least shows the structures of an opening indication surface and a closing indication surface;

[0035] 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;

[0036] Fig. 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;

[0037] Fig.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;

[0038] Fig.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;

[0039] Fig.12 The present invention Fig.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;

[0040] Fig.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;

[0041] Fig.14 The present invention Fig.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;

[0042] Fig.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;

[0043] Fig.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;

[0044] Fig.17 The present invention Fig.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;

[0045] Fig.18 It is a schematic diagram of the projection structure of the plug-in miniature circuit breaker of the present invention, which at least shows the structure of the first embodiment of the in-place indication mechanism, and the circuit breaker is in a state of not being installed in place;

[0046] Fig.19 The present invention Fig.18 The enlarged structural diagram of the G portion at least shows the structure of the first embodiment of the in-place indication mechanism;

[0047] Fig. 20 It is a schematic diagram of the projection structure of the plug-in miniature circuit breaker of the present invention, which at least shows the structure of the first embodiment of the in-place indication mechanism, and the circuit breaker is in the in-place installation state;

[0048] Fig.21 The present invention Fig. 20 The enlarged structural schematic diagram of the H portion at least shows the structure of the first embodiment of the in-place indication mechanism;

[0049] Fig. 22 It is a schematic diagram of the coordination structure between the in-position linkage member and the operating mechanism of the in-position indication mechanism of the first embodiment of the present invention when the circuit breaker is in an uninstalled state;

[0050] Fig.23It is a schematic diagram of the coordination structure between the in-position linkage member and the operating mechanism of the in-position indication mechanism of the first embodiment of the present invention when the circuit breaker is in the in-position state;

[0051] Fig.24 It is a schematic diagram of the positional relationship between the opening and closing indicator and the in-position indicator of the present invention;

[0052] Fig.25 is a schematic diagram of the projection structure of the plug-in miniature circuit breaker of the present invention, at least showing the structure of the second embodiment of the in-position indication mechanism;

[0053] Fig.26 It is a structural schematic diagram of a second embodiment of the in-place indication mechanism of the present invention, which at least shows the matching relationship between the operating member and the in-place indication member when the circuit breaker is in a state where it is not installed in place;

[0054] Fig. 27 It is a structural schematic diagram of a second embodiment of the in-place indication mechanism of the present invention, which at least shows the matching relationship between the operating member and the in-place indication member when the circuit breaker is in the in-place installation state;

[0055] Fig.28 It is a structural schematic diagram of a third embodiment of the in-place indication mechanism of the present invention;

[0056] Fig.29 It is a structural schematic diagram of a circuit breaker locking member of the in-place indication mechanism of the present invention, and at least shows the matching relationship between the operating member and the circuit breaker locking member when the circuit breaker is in the installed in-place state. DETAILED DESCRIPTION

[0057] The following is combined with Figure 1-29 The following embodiments are provided to further illustrate the specific implementation of the plug-in type miniature circuit breaker of the present invention. The plug-in type miniature circuit breaker of the present invention is not limited to the description of the following embodiments.

[0058] like Figure 1 , 3 As shown in Figures , 8, 11, 13, 16, 19, 20 and 25, the plug-in miniature circuit breaker of the present invention comprises a housing 6, an operating mechanism and a contact system, the operating mechanism comprises an operating member 1 with one end inserted into the housing 6 and the other end protruding from the outside of the housing 6, the contact system comprises a moving contact 900c with one end connected to the operating mechanism and a stationary contact 910c used in conjunction with the moving contact 900c.

[0059] Preferably, Figure 1-17As shown, the housing 6 includes an opening and closing indication window 62a arranged thereon; the plug-in small circuit breaker also includes an opening and closing indication member 2 arranged in the housing 6 and used to indicate the opening and closing state of the plug-in small circuit breaker, and the opening and closing indication member 2 is arranged on one side of the operating member 1 and cooperates with it; pressing the operating member 1 causes the plug-in small circuit breaker to enter the closing state through the operating mechanism, and the opening and closing indication member 2 is actuated, indicating the closing state of the plug-in small circuit breaker through the opening and closing indication window 62a. Further, as Figure 1-17 As shown, the opening and closing indicator 2 includes an opening indication surface 22 and a closing indication surface 23 arranged thereon; when the plug-in small circuit breaker is in the opening state, the opening indication surface 22 is visible through the opening and closing indication window 62a, and the operating member 1 is pressed to make the plug-in small circuit breaker enter the closing state from the opening state, and the opening and closing indicator 2 is actuated so that the closing indication surface 23 is visible through the opening and closing indication window 62a. Further, as Figure 1-17 As shown, the switch-on / off indicator 2 is pivotally mounted on the housing 6, and the operating member 1 is pressed to make the plug-in miniature circuit breaker enter the closed state from the open state, and the switch-on / off indicator 2 rotates so that the closing indication surface 23 is visible through the switch-on / off indication window 62a. Figure 1-17 As shown, when the plug-in miniature circuit breaker is in the closed state, the pulling operating member 1 causes the plug-in miniature circuit breaker to enter the open state through the operating mechanism, and the operating member 1 drives the opening and closing indicator 2 to rotate, so that the opening indication surface 22 is visible through the opening and closing indication window 62a; or, when the plug-in miniature circuit breaker is in the closed state, the pressing operating member 1 causes the plug-in miniature circuit breaker to enter the open state through the operating mechanism, and at the same time the operating member 1 pops up, and the operating member 1 drives the opening and closing indicator 2 to rotate, so that the opening indication surface 22 is visible through the opening and closing indication window 62a.

[0060] The plug-in miniature circuit breaker of the present invention has an opening and closing indicator 2 that cooperates with the operating member 1, so that the action of the opening and closing indicator 2 is directly controlled by the operating member 1, and can accurately indicate the opening and closing state of the plug-in miniature circuit breaker, thereby improving the safety of electricity use; the opening and closing indicator 2 is pivotally arranged on the housing 6, which is beneficial to reducing the assembly space and action space of the opening and closing indicator 2, saving the internal space of the circuit breaker, and is beneficial to the miniaturization of the plug-in miniature circuit breaker; the opening and closing indicator window 62 of the housing 6 is used to indicate the opening and closing state of the plug-in miniature circuit breaker, which is more intuitive and clear.

[0061] Preferably, Figure 18-24As shown, the housing 6 includes an in-place indication window 62b and a protruding opening 64 arranged thereon; the plug-in miniature circuit breaker also includes an in-place indication mechanism, which includes an actuated protrusion 51 and an in-place indication end 4243 respectively arranged at both ends thereof, the actuated protrusion 51 protrudes outside the housing 6 through the protruding opening 64, and the in-place indication end 4243 is arranged 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 of the circuit breaker assembly position squeezes the actuated protrusion 51, so that the in-place indication end 4243 indicates that the plug-in miniature circuit breaker is in the installed state through the in-place indication window 62b. Further, as Figure 18-24 As shown, 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 the plug-in miniature circuit breaker 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 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 in place. Further, as Figure 18-24 As shown, the in-position indicating mechanism includes an in-position indicating member 4 and an in-position linkage member 5. One end of the in-position indicating member 4 is provided with an in-position indicating end 4243, and the other end is drivingly matched with one end of the in-position linkage member 5. The other end of the in-position linkage member 5 is provided with an actuated protrusion 51. Further, the in-position linkage member 5 also includes a circuit breaker locking protrusion 53 arranged on one side of the in-position driving protrusion 52. The circuit breaker locking protrusion 53 is limitedly matched 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 in position, the housing of the circuit breaker assembly position squeezes the actuated protrusion 51, so that the in-position linkage member 5 rotates, and the limiting match between the locking protrusion 53 and the operating mechanism is released.

[0062] The plug-in miniature circuit breaker of the present invention has an in-place indication mechanism that can accurately indicate whether the plug-in miniature circuit breaker is in a fully installed state, thereby 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 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 not installed or not in place, thereby further improving the safety of electricity use.

[0063] Preferably, Figure 25-29As shown, the housing 6 includes an in-place indication window 62b and a protruding opening 64 arranged thereon; the plug-in miniature circuit breaker also includes an in-place indication mechanism arranged in the housing 6, the in-place indication mechanism includes an in-place indicator 4, the middle part of which is pivotally arranged on the housing 6, the in-place indicator 4 includes an indication end 4cd and an indicator actuated end 4a respectively arranged at both ends thereof, the indication end 4cd is arranged opposite to the in-place indication window 62b, and the indicator actuated end 4a is protruded and arranged outside the housing 6 through the protruding opening 64; after the plug-in miniature circuit breaker is installed to the circuit breaker assembly position and installed in place, the housing of the circuit breaker assembly position squeezes the indicator actuated end 4a, so that the indication end 4cd passes through the in-place indication window 62b to indicate that the plug-in miniature circuit breaker is in the installed state. Further, as Figure 25-29 As shown, the indicating end 4cd includes a warning side 4c and an in-place indicating side 4d; when the plug-in miniature circuit breaker is not installed and the plug-in miniature circuit breaker is installed in the circuit breaker assembly but not in place, the warning side 4c is visible through the in-place indicating window 62b, indicating that the plug-in miniature circuit breaker is in an in-place state; after the plug-in miniature circuit breaker is installed in the circuit breaker assembly position and in place, the in-place indicating side 4d is visible through the in-place indicating window 62b, indicating that the plug-in miniature circuit breaker is in a in-place installed state. Further, as Figure 25-29 As shown, the plug-in miniature circuit breaker further includes a circuit breaker locking member 8 pivotally disposed in the middle on the housing 6, and the circuit breaker locking member 8 includes a locking boss 81 and a locking member actuated end 80 respectively disposed at both ends thereof, and the locking boss 81 is limitedly matched 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 to the circuit breaker assembly position and is installed in place, the housing of the circuit breaker assembly position squeezes the locking member actuated end 80, so that the circuit breaker locking member 8 rotates, the limiting cooperation between the locking boss 81 and the operating mechanism is released, and the operating member 1 is pressed to close the moving contact 900c and the static contact 910c through the operating mechanism.

[0064] The plug-in miniature circuit breaker of the present invention has an in-place indication mechanism including an in-place indication member 4, which cooperates with the housing driving of the circuit breaker assembly position to accurately indicate whether the plug-in miniature circuit breaker is installed in place, thereby improving the safety of electricity use and ensuring the working stability of the circuit breaker. In addition, the in-place indication member 4 has a simple structure, is easy to assemble, and works stably. 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, thereby further improving the safety of electricity use.

[0065] The following is an implementation of the plug-in miniature circuit breaker of the present invention.

[0066] like Figure 1 , 3As shown in , 8, 11, 13, 16, 19, 20, and 25, the plug-in miniature circuit breaker of the present invention comprises a housing 6, an operating mechanism, and a contact system. The operating mechanism comprises an operating member 1 with one end inserted into the housing 6 and the other end protruding from the outside of the housing 6. The contact system comprises a moving contact 900c with one end connected to the operating mechanism and a stationary contact 910c used in conjunction with the moving contact 900c. Specifically, Figure 3 In the direction shown, the plug-in miniature circuit breaker of the present invention, the operating mechanism and the contact system are both arranged in the housing 6, the operating mechanism is arranged on the upper part of the housing 6, the contact system is arranged below the operating mechanism, the operating member 1 of the operating mechanism is inserted at the upper end of the housing 6, the upper end of the operating member 1 protrudes on the upper side of the housing 6, and the lower end is inserted in 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 for use therewith.

[0067] It should be pointed out that the operating mechanism and the contact system can be realized by the existing technology, which 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 jumper 300, a lock 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 jumper 300 through the second connecting rod 200, the jumper 300 and the lock 400 are respectively rotatably arranged on the support plate, the jumper 300 is locked with the lock 400, and the support plate is connected to the moving contact 900c. Furthermore, in the plug-in miniature circuit breaker of the present invention, the pressing / pulling operating member 1 can close (closing) / disconnect (opening) the moving contact 900c and the static contact 910c through the operating mechanism, or the pressing operating member 1 can close / disconnect the moving contact 900c and the static contact 910c through the operating mechanism. When the pressing operating member 1 disconnects the moving contact 900c and the static contact 910c through the operating mechanism, the operating member 1 will automatically pop up (i.e., pop up toward the outside of the shell 6).

[0068] Of course, if Figure 3 As shown, the plug-in miniature circuit breaker of the present invention may also include a short-circuit protection device 600, an overload protection device 500, an arc extinguishing chamber 700, an outlet terminal 900 and an inlet terminal 800, wherein the outlet terminal 900 is arranged on the left side of the operating member 1, the short-circuit protection device 600 and the arc extinguishing chamber 700 are arranged below the operating mechanism, the arc extinguishing chamber 700 is located on the left side of the short-circuit protection device 600, and the overload protection device 500 is arranged 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, used in conjunction with the trip button 400, and the overload protection device 500 is a bimetallic strip, used in conjunction with the trip button 400.

[0069] Preferably, Figure 1-17As shown, the plug-in small circuit breaker of the present invention also includes an opening and closing indicator 2 arranged in the housing 6 and used to indicate the opening and closing state of the plug-in small circuit breaker. The opening and closing indicator 2 is arranged on one side of the operating member 1 and cooperates with it; the housing 6 includes an opening and closing indicator window 62a arranged thereon; pressing the operating member 1 causes the plug-in small circuit breaker to enter the closing state through the operating mechanism, and the opening and closing indicator 2 is actuated, indicating the closing state of the plug-in small circuit breaker through the opening and closing indicator window 62a. Further, as Figure 1-17 As shown, the opening and closing indicator 2 includes an opening indication surface 22 and a closing indication surface 23 arranged thereon; when the plug-in small circuit breaker is in the opening state, the opening indication surface 22 is visible through the opening and closing indication window 62a, and the operating member 1 is pressed to make the plug-in small circuit breaker enter the closing state from the opening state, and the opening and closing indicator 2 is actuated so that the closing indication surface 23 is visible through the opening and closing indication window 62a. Further, as Figure 1-17 As shown, the opening and closing indicator 2 is pivotally arranged on the housing 6, and the operating member 1 is pressed to make the plug-in miniature circuit breaker enter the closing state from the opening state, and the opening and closing indicator 2 rotates so that the closing indication surface 23 is visible through the opening and closing indication window 62a.

[0070] Preferably, Figure 1-17 As shown, the switch opening and closing indicator 2 is rotatably arranged at an inner corner of the housing 6, and a chamfered structure is arranged at the top corner of the housing 6 corresponding to the inner corner, and a switch opening and closing indicator window 62a is arranged on the chamfered structure.

[0071] Specifically, Figure 1-5 As shown in Figures 8-17, the switch opening and closing indicator 2 is pivotally arranged at the right top corner of the upper end of the shell 6, and is located on the right side of the operating member 1. A chamfered structure is provided at the connection between the upper side wall and the right side wall of the shell 6, and the switch opening and closing indicator window 62a is provided on the chamfered structure. The switch opening and closing indicator window 62a is correspondingly arranged and used in conjunction with the switch opening and closing indicator 2.

[0072] It should be pointed out that the opening and closing indicator 2 is not limited to being pivotally arranged on the housing 6. The opening and closing indicator 2 can also be arranged on the housing 6 by means of a slide rail and a slideway. The operating member 1 drives the opening and closing indicator 2 to move up and down to indicate the opening / closing state of the plug-in small circuit breaker.

[0073] It should be pointed out that, in the present invention, “the opening and closing indicator 2 cooperates with the operating element 1 ” means that the opening and closing indicator 2 and the operating element 1 move synchronously, or the opening and closing indicator 2 moves following the movement of the operating element 1 .

[0074] like Figure 1-7 As shown, it is a first embodiment of the linkage cooperation between the opening and closing indicator 2 and the operating member 1.

[0075] like Figure 2 and 4 As shown, the opening and closing indicator 2 includes a first indicator limit platform 21a arranged on one side thereof, and the operating member 1 includes a first operating member limit boss 11a arranged on one side thereof, and the first indicator limit platform 21a is limitedly matched with the first operating member limit boss 11a; pressing the operating member 1 causes the plug-in small circuit breaker to enter the closed state from the opening state, and the first operating member limit boss 11a moves to one side of the first indicator limit platform 21a, releasing the limit cooperation with the first indicator limit platform 21a, and the opening and closing indicator 2 rotates, so that the closing indication surface 23 is visible through the opening and closing indication window 62a.

[0076] Preferably, Figure 4-7 As shown, the opening and closing indicator 2 is a cylindrical structure, including a first indicator limiting platform 21a arranged on one side thereof and an opening indicating surface 22 and a closing indicating surface 23 arranged at the other end of the opening and closing indicator 2. The middle part of the opening and closing indicator 2 is pivotally arranged on the housing 6, and the first indicator limiting platform 21a includes a first limiting plane 210a arranged on one side thereof; the plug-in miniature circuit breaker is in an opening state (such as Figure 4 As shown) enter the closing state (as shown) Figure 5 As shown in the figure), 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 is disengaged from the first limiting plane 210a, thereby releasing the limiting cooperation between the first operating member limiting boss 11a and the first indicator member limiting platform 21a.

[0077] Preferably, Figure 1-5 As shown, the opening and closing indicator 2 also includes an indicator shaft hole 20 arranged in the middle thereof, and the opening and closing indicator 2 is sleeved on the first mounting shaft 63 of the housing 6 through the indicator shaft hole 20; the plug-in miniature circuit breaker also includes an indicator torsion spring 3, which is sleeved on the first mounting shaft 63, one end of which is connected to the opening and closing indicator 2, and the other end is connected to the housing 6, providing rotational power for the opening and closing indicator 2.

[0078] Specifically, Figure 2 and 4As shown, the plug-in miniature circuit breaker is in the open state, the opening and closing indicator 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 indicator limiting platform 21a is arranged on the left side of the opening and closing indicator 2, the first limiting plane 210a is arranged on the left side of the first indicator limiting platform 21a, the first operating member limiting boss 11a is pressed and matched with the upper end of the first limiting plane 210a, and the opening and closing indicator 2 is prevented from rotating counterclockwise. At this time, the opening indication surface 22 of the opening and closing indicator 2 is opposite to the opening and closing indication window 62a, and the opening indication surface 22 is visible through the opening and closing indication window 62a; as shown Figure 5 As shown, the plug-in miniature circuit breaker is in the closed state, the first operating member limiting boss 11a is located below the first indicator 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 closing indication surface 23 of the opening and closing indicator 2 is opposite to the opening and closing indication window 62a, and the closing indication surface 23 is visible through the opening and closing indication window 62a; combined with Figure 2 , 4 and 5. Pressing the operating member 1 causes the plug-in small circuit breaker to enter the closed state from the open 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 is separated from the first limiting plane 210a, releasing the limiting cooperation between the first operating member limiting boss 11a and the first indicator member limiting platform 21a. The indicator member torsion spring 3 drives the opening and closing indicator 2 to rotate counterclockwise, so that the closing indication surface 23 is opposite to the opening and closing indication window 62a. The closing indication surface 23 is visible through the opening and closing indication window 62a, indicating that the plug-in small circuit breaker is in the closed state.

[0079] like Figure 6 and 7 The figure shows a first embodiment of the opening and closing indicator 2.

[0080] like Figure 6 and 7 As shown, the opening and closing indicator 2 is a cylindrical structure, including a first indicator limiting platform 21a arranged on one side of the opening and closing indicator 2, an opening indicating surface 22 and a closing indicating surface 23 arranged on the other side of the opening and closing indicator 2, and an indicator shaft hole 20 arranged in the middle of the opening and closing indicator 2; the opening indicating surface 22 and the closing indicating surface 23 are both arc-shaped surfaces, one end of the opening indicating surface 22 is close to one end of the first indicator limiting platform 21a, and 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 indicator platform 21a; the length of the first indicator limiting platform 21a is greater than the outer diameter of the opening and closing indicator 2, and a first limiting plane 210a is provided on one side of the first indicator limiting platform 21a.

[0081] Specifically, Figure 6 As shown, the first indicator limiting platform 21a is arranged on the left side of the opening and closing indicator 2 and is located on the left side of the rotation center of the opening and closing indicator 2, the opening indicating surface 22 and the closing indicating surface 23 are arranged on the right side of the opening and closing indicator 2 and are located on the right side of the rotation center of the opening and closing indicator 2, the first limiting plane 210a is arranged on the left side of the first indicator limiting platform 21a, and the radius of the opening indicating surface 22 is greater than the radius of the closing indicating surface 23.

[0082] It should be pointed out that in order to make the opening indication surface 22 and the closing indication surface 23 correspond to the opening state and the closing state of the plug-in miniature circuit breaker respectively, the opening indication surface 22 and the closing indication surface 23 can be different colors or carry different text logos, or have different colors and carry different text logos.

[0083] like Figure 8-12 As shown, it is a second embodiment of the linkage cooperation between the opening and closing indicator 2 and the operating member 1.

[0084] like Figure 8-12 As shown, the opening and closing indicator 2 includes a first indicator actuated boss 21b arranged on one side thereof, and the operating member 1 includes a first operating member driving boss 11b arranged on one side thereof, and the first operating member driving boss 11b is driven and cooperated with the first indicator actuated boss 21b; pressing the operating member 1 causes the plug-in small circuit breaker to enter the closed state from the opening state, and the first operating member driving boss 11b drives the opening and closing indicator 2 to rotate through the first indicator actuated boss 21b, so that the closing indication surface 23 is visible through the opening and closing indication window 62a.

[0085] Specifically, Fig. 9 and 10 As shown, the plug-in miniature circuit breaker is in the open state, a first operating member driving boss 11b is provided on the right side of the operating member 1, a first indicator actuated boss 21b is provided on the left side of the opening and closing indicator 2, and the first operating member driving boss 11b is arranged above the first indicator actuated boss 21b. At this time, the opening indicating surface 22 of the opening and closing indicator 2 is opposite to the opening and closing indicating window 62a, and the opening indicating surface 22 is visible through the opening and closing indicating window 62a; as shown in FIG. Fig.12 As 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 indicator member driven boss 21b, at this time, the closing indication surface 23 of the opening and closing indicator 2 is opposite to the opening and closing indication window 62a, and the closing indication surface 23 is visible through the opening and closing indication window 62a; Fig. 9 , 10, 12, the plug-in miniature circuit breaker enters the closed state from the open state, and the operating member 1 is pressed. The operating member 1 drives the opening and closing 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 opening and closing indicating window 62a.

[0086] like Fig.10 The figure shows a second embodiment of the opening and closing indicator 2.

[0087] The switch-on / off indicator 2 is a cylindrical structure, including a first indicator actuated boss 21b arranged on one side of the switch-on / off indicator 2, a switch-on indicating surface 22 and a switch-on indicating surface 23 arranged on the other side of the switch-on / off indicator 2, and an indicator shaft hole 20 arranged in the middle of the switch-on / off indicator 2, and the switch-on / off indicator 2 is sleeved on the first mounting shaft 63 of the housing 6 through the indicator shaft hole 20; the plug-in miniature circuit breaker also includes an indicator torsion spring 3, which is sleeved on the first mounting shaft 63, one end of which is connected to the switch-on / off indicator 2, and the other end of which is connected to the housing 6, to provide rotational power for the indicator 2. Further, the switch-on indicating surface 22 and the switch-on indicating surface 23 are both arc-shaped surfaces, one end of the switch-on indicating surface 22 is connected to one end of the switch-on indicating surface 23, and the first indicator actuated boss 21b is located between the other end of the switch-on indicating surface 22 and the other end of the switch-on indicating surface 23. Furthermore, the radius of the opening indication surface 22 is greater than the radius of the closing indication surface 23 .

[0088] Specifically, Fig.10 As shown, the first indicator member actuated boss 21b is arranged on the left side of the opening and closing indicator member 2 and on the left side of the rotation center of the opening and closing indicator member 2, and the opening indication surface 22 and the closing indication surface 23 are arranged on the right side of the opening and closing indicator member 2 and on the right side of the rotation center of the opening and closing indicator member 2. Fig.10 As shown, the front end of the opening and closing indicator 2 is also provided with a torsion spring limiting protrusion connected to the indicator torsion spring 3.

[0089] like Figure 13-17 As shown, it is a third embodiment of the linkage cooperation between the opening and closing indicator 2 and the operating member 1.

[0090] like Figure 13-17 As shown, the opening and closing indicator 2 is a cylindrical structure, including a plurality of circumferentially distributed indicator teeth arranged on the side surface of the opening and closing indicator 2 ring, and the operating member 1 includes a plurality of side-by-side operating member teeth arranged on one side thereof, and the indicator teeth and the operating member teeth are engaged with each other; pressing the operating member 1 causes the plug-in small circuit breaker to enter the closed state from the opening state, and the opening and closing indicator 2 is driven to rotate through the cooperation of the operating member teeth and the indicator teeth, so that the closing indication surface 23 is visible through the opening and closing indication window 62a.

[0091] like Fig.15 As shown, a third embodiment of the opening and closing indicator 2 is shown.

[0092] The opening and closing indicator 2 is a cylindrical structure, including three indicator teeth arranged on one side thereof, an opening indication surface 22 and a closing indication surface 23 arranged on the other side of the opening and closing indicator 2, and an indicator shaft hole 20 arranged in the middle of the opening and closing indicator 2; the three indicator teeth are respectively a first indicator tooth 21c1, a second indicator tooth 21c2 and a third indicator tooth 21c3 arranged in sequence, the first indicator tooth 21c1 is close to one end of the opening indication surface 22, the other end of the opening indication surface 22 is connected to one end of the closing indication surface 23, and the other end of the closing indication surface 23 is close to the third indicator tooth 21c3; the opening and closing indicator 2 is sleeved on the first mounting shaft 63 of the housing 6 through the indicator shaft hole 20.

[0093] Preferably, Fig.15 As shown, the operating member 1 includes three operating member teeth arranged on one side thereof, which are the first operating member teeth 11c1, the second operating member teeth 11c2 and the third operating member teeth 11c3 arranged in sequence. Specifically, the first operating member teeth 11c1, the second operating member teeth 11c2 and the third operating member teeth 11c3 are arranged from top to bottom.

[0094] Specifically, Figure 14-15 As shown, 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 indicator member teeth are axially distributed on the left side of the indicator member 2, the operating member teeth and the indicator member teeth are engaged with each other, at this time, the opening indication surface 22 of the opening and closing indicator member 2 is opposite to the opening and closing indication window 62a, and the opening indication surface 22 is visible through the opening and closing indication window 62a; Fig.17 As shown, the plug-in miniature circuit breaker is in the closed state, at this time, the closing indication surface 23 of the opening and closing indicator 2; Fig.14 , 1517, the plug-in type miniature circuit breaker enters the closed state from the open state, and the operating member 1 is pressed downward. The operating member 1 drives the indicator 2 to rotate counterclockwise through the meshing of the operating member teeth and the indicator teeth, so that the closing indication surface 23 is opposite to the opening and closing indication window 62a, and the closing indication surface 23 is visible through the opening and closing indication window 62. Further, when the plug-in type miniature circuit breaker is in the open state, the second indicator teeth 21c1 are located between the second operating member teeth 11c2 and the third operating member teeth 11c3, and the third operating member teeth 11c3 are located between the second indicator teeth 21c2 and the third indicator teeth 21c3; when the plug-in type miniature circuit breaker is in the closed state, the first indicator teeth 21c1 are located between the first operating member teeth 11c1 and the second operating member teeth 11c2.

[0095] Preferably, Figure 18-29 As shown, the plug-in miniature circuit breaker of the present invention further comprises a position indicating mechanism, which is used to indicate whether the plug-in miniature circuit breaker is installed in place.

[0096] Preferably, Figure 18-24 The figure shows a first implementation of the in-place indication mechanism.

[0097] like Figure 18-24 As shown, the housing 6 includes an in-place indication window 62b and a protruding opening 64 arranged thereon; the in-place indication mechanism includes an actuated protrusion 51 and an in-place indication end 4243 respectively arranged at both ends thereof, the actuated protrusion 51 protrudes outside the housing 6 through the protruding opening 64, and the in-place indication end 4243 is arranged 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 of the circuit breaker assembly position squeezes the actuated protrusion 51, so that the in-place indication end 4243 indicates that the plug-in miniature circuit breaker is in the installed state through the in-place indication window 62b. Further, as Figure 18-24 As shown, 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 the plug-in miniature circuit breaker 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 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 in place. Further, as Figure 18-24 As shown, the in-place indicating mechanism includes an in-place indicating member 4 and an in-place linkage member 5 pivotally arranged on the shell 6 respectively. One end of the in-place indicating member 4 is provided with an in-place indicating end 4243, and the other end is driven and cooperated with the in-place linkage member 5. The other end of the in-place linkage member 5 is provided with an actuated protrusion 51.

[0098] Specifically, Figure 18-24 As shown, the in-position indicating window 62b is arranged at the right top corner of the upper end of the shell 6, and the extension opening 64 is arranged on the right side wall of the shell 6; the in-position indicating member 4 is pivotally arranged at the right top corner of the upper end of the shell 6, and the in-position linkage member 5 is pivotally arranged on the right side of the shell 6 and is located below the in-position indicating member 4. The upper end of the in-position indicating member 4 is provided with an in-position indicating end 4243, and the lower end is driven and matched with the in-position linkage member 5. The lower end of the in-position linkage member 5 is provided with an actuated protrusion 51, and the actuated protrusion 51 protrudes from the right side of the shell 6 through the extension opening 64. side; after the plug-in miniature circuit breaker is installed in the circuit breaker assembly position, the housing of the circuit breaker assembly position squeezes the actuated protrusion 51 to move it toward the inside of the housing 6, so that the in-position linkage member 5 rotates clockwise, and the upper end of the in-position linkage member 5 drives the lower end of the in-position indicator member 4 to rotate the in-position indicator member 4 counterclockwise, so that the in-position indication surface 43 of the in-position indication end 4243 is opposite to the in-position indication window 62b, and the in-position indication surface 43 is visible through the in-position indication window 62b, indicating that the plug-in miniature circuit breaker is in the installed state. Further, as Fig.19 , 21 As shown in FIG. 23 , a chamfered structure is provided at the connection between the upper side wall and the right side wall of the shell 6, and the position indicating window 62b is provided on the chamfered structure.

[0099] Preferably, Fig.19 As shown, the in-position indicator 4 is pivotally arranged on the housing 6 through the second mounting shaft 63 of the housing 6, that is, the in-position indicator 4 is coaxially mounted with the opening and closing indicator 2, which is beneficial to simplifying the mounting structure and operation of the plug-in miniature circuit breaker of the present invention, and is beneficial to simplifying the structure of the housing 6 and saving the production cost of the housing 6.

[0100] Preferably, Figure 22-23 As shown, the in-position linkage member 5 also includes a circuit breaker locking protrusion 53 arranged on one side of the in-position driving protrusion 52, and the circuit breaker locking protrusion 53 cooperates with the operating mechanism to prevent the operating member 1 from moving in the circuit breaker closing direction (preventing the operating member 1 from moving downward); 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 squeezes the driven protrusion 51, so that the in-position linkage member 5 rotates, and the locking protrusion 53 is released from the limited cooperation with the operating mechanism; further, as Figure 22-23 As shown, the operating mechanism further includes a first connecting rod 7, which includes a connecting rod first end 70 inserted on the operating member 1; the operating member 1 is limitedly matched with the circuit breaker locking protrusion 53, or the connecting rod first end 70 is limitedly matched with the circuit breaker locking protrusion 53.

[0101] Specifically, Figure 22-23As shown, the circuit breaker locking protrusion 53 is arranged on the left side of the in-place driving protrusion 52, and is located below the first end 70 of the connecting rod and cooperates with its limit position to prevent the operating member 1 from moving downward. After the plug-in small circuit breaker is installed in the circuit breaker assembly and installed in place, the shell of the circuit breaker assembly position squeezes the driven protrusion 51 to move it into the shell 6, so that the in-place linkage member 5 rotates clockwise, and the circuit breaker locking protrusion 53 moves to the right side of the first end 70 of the connecting rod, releasing the limit position cooperation with the first end 70 of the connecting rod, pressing the operating member 1 downward, and the plug-in small circuit breaker can be closed through the operating mechanism.

[0102] Preferably, Figure 18-24 As shown, the middle part of the in-position indicator 4 is pivotally arranged on the shell 6, including an in-position indicator end 4243 and an in-position actuated protrusion 41 respectively arranged at its two ends; the middle part of the in-position linkage member 5 is pivotally arranged on the shell 6, including an in-position driving protrusion 52 and an actuated protrusion 51 respectively arranged at its two ends, and the in-position driving protrusion 52 is driven to cooperate with the in-position actuated protrusion 41.

[0103] like Fig.24 FIG. 2 shows a first embodiment of the in-place indicator 4 .

[0104] The in-place indicator 4 includes a rotating disk 40, and an in-place indicator end 4243 and an in-place actuated protrusion 41 respectively arranged at both ends of the rotating disk 40; an in-place indicator shaft hole is arranged in the middle of the rotating disk 40, and the rotating disk 40 is sleeved on the first installation shaft 63 of the housing 6 through the in-place indicator shaft hole; the in-place indicator end 4243 includes a warning surface 42 and an in-place indicator surface 43, and both the warning surface 42 and the in-place indicator surface 43 are arc-shaped surfaces, and the radius of the warning surface 42 is greater than the radius of the in-place indicator surface 43. Further, the warning surface 42 and the in-place indicator surface 43 can be different colors to indicate the uninstalled in-place state and the installed in-place state of the circuit breaker, or the warning surface 42 and the in-place indicator surface 43 carry different text marks to indicate the uninstalled in-place state and the installed in-place state of the circuit breaker, and of course the warning surface 42 and the in-place indicator surface 43 can have different colors and text marks respectively.

[0105] It should be pointed out that the in-place indicator 4 may not be provided with the in-place indicator surface 43, but only with the warning surface 42. When the warning surface 42 cannot be seen through the in-place indicator window 62b, it means that the plug-in miniature circuit breaker is in the installed in-place state, which is conducive to simplifying the structure of the in-place indicator 4 and saving costs.

[0106] like Figure 22-23 FIG. 1 is an embodiment of the in-place linkage member 5 .

[0107] The in-place linkage member 5 is a rod-shaped structure, including an in-place driving protrusion 52 and a driven protrusion 51 respectively arranged at both ends thereof, and a circuit breaker locking protrusion 53 arranged 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.

[0108] like Figure 25-27 FIG. 2 shows a second embodiment of the in-place indication mechanism.

[0109] The housing 6 includes an in-place indication window 62b and a protruding opening 64 arranged thereon; the in-place indication mechanism includes an in-place indication member 4, the middle part of which is pivotally arranged on the housing 6, and the in-place indication member 4 includes an indication end 4cd and an indication member actuated end 4a respectively arranged at both ends thereof, the indication end 4cd is arranged opposite to the in-place indication window 62b, and the indication member actuated end 4a is protruded and arranged on the outside of the housing 6 through the protruding opening 64; after the plug-in small circuit breaker is installed to the circuit breaker assembly position and installed in place, the housing of the circuit breaker assembly position squeezes the indication member actuated end 4a, so that the indication end 4cd passes through the in-place indication window 62b to indicate that the plug-in small circuit breaker is in the installed state. Furthermore, the indicating end 4cd includes a warning side 4c and an in-place indicating side 4d; when the plug-in miniature circuit breaker is not installed and the plug-in miniature circuit breaker is installed in the circuit breaker assembly position and is in place, the warning side 4c is visible through the indicating window 62b, indicating that the plug-in miniature circuit breaker is not in a state of being installed in place; after the plug-in miniature circuit breaker is installed in the circuit breaker assembly position and is in place, the in-place indicating side 4d is visible through the in-place indicating window 62b, indicating that the plug-in miniature circuit breaker is in a state of being installed in place.

[0110] Specifically, Figure 25-27 As shown, the indicating end 4cd and the indicating member actuated end 4a are respectively arranged at the upper and lower ends of the in-position indicating member 4, and the middle part of the in-position indicating member 4 is pivotally arranged on the housing 6; Figure 25-26 As shown, the plug-in miniature circuit breaker is not installed or is installed to the circuit breaker assembly position and is not installed in place. At this time, the warning side 4c of the indicator end 4cd is opposite to the in-place indication window 62b, and the warning side 4c is visible through the in-place indication window 62b; Fig. 27 As shown, the plug-in miniature circuit breaker is installed in the circuit breaker assembly position and installed in place, at this time, the in-place indicating side 4d of the indicating end 4cd is opposite to the in-place indicating window 62b, and the in-place indicating side 4d is visible through the in-place indicating window 62b; combined with Figure 25-27The plug-in miniature circuit breaker enters the installed state from the uninstalled state, the housing squeeze indicator actuated end 4a of the circuit breaker assembly position moves into the housing 6, causing the in-place indicator 4 to rotate clockwise, and the indicator end 4cd moves to the right so that the in-place indicator side 4d is visible through the in-place indicator window 62b.

[0111] Preferably, Figure 25-27 As shown, the in-position indicator 4 also includes a circuit breaker locking boss 4b, which cooperates with the operating mechanism to prevent the operating member 1 from moving in the circuit breaker closing direction (preventing the operating member 1 from moving downward); 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 squeezes the indicator receiving end 4a, causing the in-position indicator 4 to rotate, releasing the limiting cooperation between the operating mechanism and the circuit breaker locking boss 4b, and pressing the operating member 1 to close the moving contact 900c and the static contact 910c through the operating mechanism. Further, as Figure 25-27 As shown, the operating member 1 includes a connecting rod mounting platform 12 arranged on one side thereof, and the first connecting rod 7 of the operating mechanism includes a connecting rod first end 70 inserted on the connecting rod mounting platform 12, and the connecting rod mounting platform 12 is limitedly matched with the circuit breaker locking boss 4b, or the connecting rod first end 70 is limitedly matched with the circuit breaker locking boss 4b.

[0112] Specifically, Figure 25-27 As shown, a connecting rod mounting platform 12 is provided on the right side of the operating member 1, and a plug hole for inserting the first connecting rod 7 is provided on the connecting rod mounting platform 12. A circuit breaker locking boss 4b is provided on the left side of the in-place indicator 4. The circuit breaker locking boss 4b is located below the connecting rod mounting platform 12 or below the connecting rod first end 70 and is limitedly matched with the connecting rod mounting platform 12 or the connecting rod first end 70. After the plug-in small circuit breaker is installed to the circuit breaker assembly position and is installed in place, the housing of the circuit breaker assembly position squeezes the indicator driven end 4a to move it into the housing 6, and the in-place indicator 4 rotates clockwise to move the circuit breaker locking boss 4b to the right side of the connecting rod mounting platform 12 or the connecting rod first end 70, and releases the limited match with the connecting rod mounting platform 12 or the connecting rod first end 70. Of course, other parts of the operating member 1 can also be limitedly matched with the circuit breaker locking boss 4b. When the in-place indicator 4 rotates clockwise, the operating member 1 contacts the circuit breaker locking boss 4b for limited matching.

[0113] like Fig.26 FIG. 2 shows a second embodiment of the in-place indicator 4 .

[0114] The in-place indicator 4 includes an indicating end 4cd, an indicating end 4a and a circuit breaker locking boss 4b. The indicating end 4cd and the indicating end 4a 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 indicating end 4a are respectively arranged on both sides of the in-place indicator 4, and 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 the second mounting shaft 65 of the housing 6. Specifically, as Fig.26 In the direction shown, the indicating end 4cd and the indicating member actuated end 4a are respectively arranged at the upper and lower ends of the in-place indicating member 4, the circuit breaker locking boss 4b and the indicating member actuated end 4a are respectively located at the left and right sides of the in-place indicating member 4, and the circuit breaker locking boss 4b is located below the indicating end 4cd and above the rotation center of the in-place indicating member 4. Figure 28-29 The third embodiment of the in-position indicating mechanism is shown in FIG. The difference between the in-position indicating mechanism of this embodiment and the second embodiment is that: the circuit breaker locking member 8 is further included, and the in-position indicating member 4 is not provided with the circuit breaker locking boss 4b; the circuit breaker locking member 8 includes a locking boss 81 and a locking member actuated end 80 respectively provided at both ends thereof, and the locking boss 80 is limitedly matched with the operating mechanism to prevent the operating member 1 from moving in the circuit breaker closing direction, and after the plug-in miniature circuit breaker is installed to the circuit breaker assembly position and installed in place, the housing of the circuit breaker assembly position presses the locking member actuated end 80, so that the circuit breaker locking member 8 rotates to release the limited matching between the locking boss 81 and the operating mechanism, and the operating member 1 is pressed to close the moving contact 900c and the static contact 910c through the operating mechanism. Furthermore, the operating member 1 includes a connecting rod mounting platform 12 arranged on one side thereof, and the first connecting rod 7 of the operating mechanism includes a connecting rod first end 70 inserted into the connecting rod mounting platform 12, and the connecting rod mounting platform 12 is limitedly matched with the locking boss 81, or the connecting rod first end 70 is limitedly matched with the locking boss 81.

[0115] Preferably, Figure 28-29 As shown, the position indicator 4 and the circuit breaker locking member 8 are both pivotally arranged on the housing 6 via a second mounting shaft 65 .

[0116] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A plug-in miniature circuit breaker, comprising a housing (6), an operating mechanism and a contact system, wherein the operating mechanism comprises an operating member (1) having one end inserted into the housing (6) and the other end protruding outside the housing (6), and the contact system comprises a moving contact (900c) having one end connected to the operating mechanism and a stationary contact (910c) used in conjunction with the moving contact (900c); Features: The housing (6) includes an opening / closing indication window (62a) arranged thereon; the plug-in small circuit breaker also includes an opening / closing indication member (2) arranged in the housing (6) and used to indicate the opening / closing state of the plug-in small circuit breaker, the opening / closing indication member (2) being arranged on one side of the operating member (1) and cooperating with the operating member; pressing the operating member (1) causes the plug-in small circuit breaker to enter a closing state through an operating mechanism, and causes the opening / closing indication member (2) to actuate, and indicates the closing state of the plug-in small circuit breaker through the opening / closing indication window (62a); when the plug-in small circuit breaker is in a closing state, pulling out the operating member (1) causes the plug-in small circuit breaker to enter an opening state through the operating mechanism, or pressing the operating member (1) causes the plug-in small circuit breaker to enter an opening state through the operating mechanism; the opening / closing indication member (2) is rotatably arranged at an inner corner of the housing (6), and a chamfered structure is provided at a top corner of the housing (6) corresponding to the inner corner, and the opening / closing indication window (62a) is provided on the chamfered structure.

2. The plug-in miniature circuit breaker according to claim 1, characterized in that: The opening and closing indicator (2) comprises an opening indication surface (22) and a closing indication surface (23) arranged thereon; When the plug-in small circuit breaker is in an open state, the open indication surface (22) is visible through the open / close indication window (62a); when the operating element (1) is pressed, the plug-in small circuit breaker enters a closed state from the open state, and the open / close indication element (2) is actuated so that the closed indication surface (23) is visible through the open / close indication window (62a).

3. The plug-in miniature circuit breaker according to claim 2, characterized in that: The opening and closing indicator (2) is pivotally arranged on the housing (6); pressing the operating member (1) causes the plug-in small circuit breaker to enter a closed state from an opening state; the opening and closing indicator (2) rotates so that the closing indicator surface (23) is visible through the opening and closing indicator window (62a).

4. The plug-in miniature circuit breaker according to claim 3, characterized in that: When the plug-in miniature circuit breaker is in a closed state, the operating member (1) is pulled out to cause the plug-in miniature circuit breaker to enter an open state through an operating mechanism, and the operating member (1) drives the opening and closing indicator (2) to rotate, so that the opening indicator surface (22) is visible through the opening and closing indicator window (62a); Alternatively, when the plug-in small circuit breaker is in a closed state, the operating member (1) is pressed to cause the plug-in small circuit breaker to enter an open state through the operating mechanism, and at the same time the operating member (1) pops up, and the operating member (1) drives the opening and closing indicator (2) to rotate, so that the opening indicator surface (22) is visible through the opening and closing indicator window (62).

5. The plug-in miniature circuit breaker according to any one of claims 2 to 4, characterized in that: The opening and closing indicator (2) comprises a first indicator limiting platform (21a) arranged on one side thereof, and the operating member (1) comprises a first operating member limiting boss (11a) arranged on one side thereof, and the first indicator limiting platform (21a) and the first operating member limiting boss (11a) are in limiting cooperation; the operating member (1) is pressed to make the plug-in small circuit breaker enter the closing state from the opening state, the first operating member limiting boss (11a) moves to one side of the first indicator limiting platform (21a), and the limiting cooperation with the first indicator limiting platform (21a) is released, and the opening and closing indicator (2) rotates, so that the closing indicator surface (23) is visible through the opening and closing indicator window (62a).

6. The plug-in miniature circuit breaker according to claim 5, characterized in that: The opening and closing indicator (2) is a cylindrical structure, comprising a first indicator limiting platform (21a) arranged on one side thereof, and an opening indicating surface (22) and a closing indicating surface (23) arranged on the other side of the opening and closing indicator (2); the middle part of the opening and closing indicator (2) is pivotally arranged on the housing (6), and the first indicator limiting platform (21a) comprises a first limiting plane (210a) arranged on one side thereof; The plug-in small circuit breaker enters the closed state from the open state, and 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) is disengaged from the first limiting plane (210a), thereby releasing the limiting cooperation between the first operating member limiting boss (11a) and the first indicator member limiting platform (21a).

7. The plug-in miniature circuit breaker according to claim 6, characterized in that: The opening and closing indicator (2) further comprises an indicator shaft hole (20) arranged in the middle thereof, and the opening and closing indicator (2) is sleeved on the first mounting shaft (63) of the housing (6) through the indicator shaft hole (20); the opening indicator surface (22) and the closing indicator surface (23) are both arc-shaped surfaces, and one end of the opening indicator surface (22) is connected to one end of the closing indicator surface (23); the plug-in small circuit breaker further comprises an indicator torsion spring (3), and the indicator torsion spring (3) is sleeved on the first mounting shaft (63), one end of which is connected to the opening and closing indicator (2), and the other end of which is connected to the housing (6), so as to provide rotational power for the opening and closing indicator (2).

8. The plug-in miniature circuit breaker according to any one of claims 2 to 4, characterized in that: The switch opening and closing indicator (2) comprises a first indicator actuated boss (21b) arranged on one side thereof, and the operating member (1) comprises a first operating member driving boss (11b) arranged on one side thereof, and the first operating member driving boss (11b) is drivingly matched with the first indicator actuated boss (21b); Pressing the operating member (1) causes the plug-in small circuit breaker to enter a closed state from an open state, and the first operating member driving boss (11b) drives the opening and closing indicating member (2) to rotate via the first indicating member receiving boss (21b), so that the closing indicating surface (23) is visible through the opening and closing indicating window (62a).

9. The plug-in miniature circuit breaker according to claim 8, characterized in that: The switch-on / off indicator (2) is a cylindrical structure, comprising a first indicator actuated boss (21b) arranged on one side of the switch-on / off indicator (2), an opening indicator surface (22) and a closing indicator surface (23) arranged on the other side of the switch-on / off indicator (2), and an indicator shaft hole (20) arranged in the middle of the switch-on / off indicator (2). The switch-on / off indicator (2) is sleeved on a first mounting shaft (63) of the housing (6) through the indicator shaft hole (20); the switch-on / off indicator surface The first indicator member (22) and the closing indicator surface (23) are both arc-shaped surfaces, one end of the opening indicator surface (22) is connected to one end of the closing indicator surface (23), and the first indicator member actuated boss (21b) is located between the other end of the opening indicator surface (22) and the other end of the closing indicator surface (23); the plug-in miniature circuit breaker further comprises an indicator member torsion spring (3), the indicator member torsion spring (3) is sleeved on the first mounting shaft (63), one end of the indicator member (2) is connected to the opening and closing indicator (2), and the other end is connected to the housing (6).

10. The plug-in miniature circuit breaker according to any one of claims 2 to 4, characterized in that: The switch-on / off indicator (2) is a cylindrical structure, comprising a plurality of circumferentially distributed indicator teeth arranged on the side surface of the switch-on / off indicator (2) ring, and the operating member (1) comprises a plurality of parallelly arranged operating member teeth arranged on one side thereof, the indicator teeth and the operating member teeth meshing with each other; Pressing the operating member (1) causes the plug-in miniature circuit breaker to enter a closed state from an open state, and the opening and closing indicating member (2) is driven to rotate through the cooperation of the operating member teeth and the indicating member teeth, so that the closing indicating surface (23) is visible through the opening and closing indicating window (62a).

11. The plug-in miniature circuit breaker according to claim 10, characterized in that: The switch-on / off indicator (2) is a cylindrical structure, comprising three indicator teeth arranged on one side thereof, a switch-on indicating surface (22) and a switch-on indicating surface (23) arranged on the other side of the switch-on / off indicator (2), and an indicator shaft hole (20) arranged in the middle of the switch-on / off indicator (2); the three indicator teeth are a first indicator tooth (21c1), a second indicator tooth (21c2) and a third indicator tooth (21c3) arranged in sequence, the first indicator tooth (21c1) is close to one end of the switch-on indicating surface (22), the other end of the switch-on indicating surface (22) is connected to one end of the switch-on indicating surface (23), and the other end of the switch-on indicating surface (23) is close to the third indicator tooth (21c3); the switch-on / off indicator (2) is sleeved on a first mounting shaft (63) of the housing (6) through the indicator shaft hole (20).

12. The plug-in miniature circuit breaker according to claim 11, characterized in that: The operating member (1) comprises three operating member teeth arranged on one side thereof, which are a first operating member tooth (11c1), a second operating member tooth (11c2) and a third operating member tooth (11c3) arranged in sequence; When the plug-in small circuit breaker is in an open state, the second indicator tooth (21c2) is located between the second operating member tooth (11c2) and the third operating member tooth (11c3), and the third operating member tooth (11c3) is located between the second indicator tooth (21c2) and the third indicator tooth (21c3); when the plug-in small circuit breaker is in a closed state, the first indicator tooth (21c1) is located between the first operating member tooth (11c1) and the second operating member tooth (11c2).

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