Circuit breaker housing and plug-in circuit breaker

Abstract

The application relates to the field of low-voltage electrical apparatus, in particular to a circuit breaker shell which is in a hexahedral structure as a whole; the circuit breaker shell comprises oppositely arranged front and rear side walls, a wire outlet hole, a button hole and a puller operating hole arranged on the front side wall, and a wire inlet hole arranged on the rear side wall; the circuit breaker shell is reasonable in structure design, compact in layout, and convenient for installation and use of the circuit breaker; the application also relates to an insertion type circuit breaker, wherein the insertion type circuit breaker comprises the circuit breaker shell, and the insertion type circuit breaker is convenient for installation and use.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of low-voltage electrical apparatus, in particular to a circuit breaker housing and an insertable circuit breaker comprising the same. BACKGROUND

[0002] The wide use of circuit breakers effectively improves the safety of electrical apparatus, and in order to meet the miniaturization trend of electrical apparatus, the overall structure and operation mode of the circuit breakers need to be continuously upgraded and improved; after fully investigating and researching the prior art, it is found that the existing circuit breakers have the following problems:

[0003] Firstly, the existing insertable circuit breakers generally have a separate opening and closing indication structure to indicate the opening and closing state of the circuit breaker, which causes the internal structure of the circuit breaker to be complex and the overall size to be large; moreover, the buttons of the operating mechanism are generally protruding outside the circuit breaker housing, which is easy to cause misoperation of the circuit breaker due to accidental touch, thereby affecting the stability and safety of power use.

[0004] Secondly, the existing insertable circuit breakers generally have two locking mechanisms, one is to prevent the circuit breaker from being closed when not installed in place, and the other is to prevent the circuit breaker from being inserted or pulled out of the cabinet in the closed state, both of which have complex structures and occupy a lot of internal space of the circuit breaker.

[0005] Thirdly, the existing insertable circuit breakers generally pull out the circuit breaker from the circuit breaker assembly position by pulling the button; when the user pulls the button to perform the opening operation, the circuit breaker may be directly pulled out of the circuit breaker assembly position due to inaccurate operation force, thereby affecting the stability and safety of power use of the user.

[0006] Fourthly, the circuit breaker housing of the existing insertable circuit breaker is not reasonably designed, and the openings provided on the housing are scattered, which is not convenient for the installation of the circuit breaker. SUMMARY

[0007] The present application aims to overcome the defects of the prior art and provide a circuit breaker housing with a reasonable structure design, compact layout and convenient installation and use, and an insertable circuit breaker comprising the same.

[0008] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0009] A circuit breaker housing has a hexahedral structure; it comprises a front side wall 1001 and a rear side wall 1002 arranged oppositely, a wire outlet hole 112, button holes 110-111 and a pulling piece operation hole 113 provided on the front side wall 1001, and a wire inlet hole 14 provided on the rear side wall 1002.

[0010] Preferably, the button holes 110-111 include a closing button hole 110 and an opening button hole 111 arranged side by side.

[0011] Preferably, the circuit breaker further comprises a pull-out piece notch 16 arranged on the front side wall 1001, the pull-out piece notch 16 being arranged between the outgoing line hole 112 and the pull-out piece operation hole 113 and communicating with the outgoing line hole 112 and the pull-out piece operation hole 113 at both ends, and the outgoing line wire inserted in the outgoing line hole 112 shielding the pull-out piece notch 16.

[0012] Preferably, the circuit breaker further comprises a pull-out piece notch 16 arranged on the front side wall 1001, the pull-out piece notch 16 being arranged between the outgoing line hole 112 and the pull-out piece operation hole 113 and communicating with the outgoing line hole 112 and the pull-out piece operation hole 113 at both ends, and the outgoing line wire inserted in the outgoing line hole 112 shielding the pull-out piece notch 16.

[0013] Preferably, the button holes 110-111 and the pull-out piece operation hole 113 are arranged at one end of the front side wall 1001, one outgoing line hole 112 is arranged at the other end of the front side wall 1001 as a first outgoing line hole, and another outgoing line hole 112 is arranged between the first outgoing line hole and the button holes 110-111 as a second outgoing line hole; the button holes 110-111 and the second outgoing line hole are located on the same side of the pull-out piece operation hole 113.

[0014] Preferably, the circuit breaker further comprises a wire removal hole 1120 arranged on the front side wall 1001 and a communication hole 15 arranged on the rear side wall 1002, the wire removal hole 1120 being matched with the outgoing line hole 112 one by one, and the communication hole 15 being located between the two incoming line holes 14.

[0015] Preferably, the circuit breaker further comprises a third side wall 1003 and a fourth side wall 1004 arranged oppositely, and a fifth side wall 1005 and a sixth side wall 1006 arranged oppositely; the third side wall 1003, the fourth side wall 1004, the fifth side wall 1005 and the sixth side wall 1006 are all located between the front side wall 1001 and the rear side wall 1002; one end of the third side wall 1003 close to the front side wall 1001 is provided with a locking piece opening hole 17 matched with the locking mechanism of the circuit breaker.

[0016] A plug-in circuit breaker comprising the circuit breaker shell 1.

[0017] Preferably, the plug-in circuit breaker further comprises a button mechanism 2 arranged in the circuit breaker shell 1, an operation mechanism connected with the button mechanism 2, and a locking mechanism matched with the button mechanism 2.

[0018] The button mechanism 2 comprises a closing button 20 and an opening button 21 which are respectively slidably arranged in the circuit breaker housing 1, pressing the closing button 20 can drive the operating mechanism to close the circuit breaker, and at the same time, the opening button 21 is moved to the outside of the circuit breaker housing 1; pressing the opening button 21 can drive the operating mechanism to open the circuit breaker, and at the same time, the closing button 20 is moved to the outside of the circuit breaker housing 1;

[0019] The locking mechanism comprises a first locking member 1a which protrudes outside the circuit breaker housing 1 through a locking member opening 17 of the circuit breaker housing 1; when the circuit breaker is in an open state, one end of the first locking member 1a protrudes outside the circuit breaker housing 1 from the locking member opening 17, the first locking member 1a can be retracted into the circuit breaker housing 1 under the retraction external force, and after the first locking member 1a is retracted, the first locking member 1a is limited to cooperate with the closing button 20 and / or the opening button 21, and the closing button 20 and / or the opening button 21 are locked to make the circuit breaker unable to be closed.

[0020] When the circuit breaker is in a closed state, the first locking member 1a protrudes outside the circuit breaker housing 1, and is limited by the closing button 20 and / or the opening button 21 and cannot be retracted into the circuit breaker housing 1.

[0021] Preferably, the unlocking mechanism which is connected with the driving of the first locking member 1a is further comprised, the unlocking mechanism comprises an independent pulling member 2a which is driven to cooperate with the first locking member 1a, when the circuit breaker is in an open state, one end of the first locking member 1a protrudes outside the circuit breaker housing 1 from the locking member opening 17, and pulling the pulling member 2a can drive the first locking member 1a to retract into the circuit breaker housing 1, and a pulling member operation part 20a of the pulling member 2a is arranged in a pulling member operation hole 113.

[0022] The closing button 20 and the opening button 21 are respectively slidably arranged in a closing button hole 110 and an opening button hole 111, and always do not protrude from the front side wall 1001 of the circuit breaker housing 1.

[0023] The circuit breaker housing of the application has reasonable structure design, compact layout, and is convenient for installation and use of the circuit breaker; and the wire outlet hole, the button hole and the pulling member operation hole of the circuit breaker housing are centrally arranged on the front side wall, which is more convenient for user operation, the wire inlet hole is arranged on the rear side wall opposite to the front side wall, which is beneficial to increase the creepage distance of the wire inlet end and the wire outlet end, and is beneficial to improve the insulation performance of the circuit breaker.

[0024] The plug-in circuit breaker of the application comprises the circuit breaker housing, is convenient for installation and use, has good insulation performance, and is beneficial to improve the power safety of the user. In addition, the circuit breaker of the application comprises the unlocking mechanism which is independent of the button mechanism, and avoids the situation that the circuit breaker is mistakenly pulled out from the circuit breaker assembly position due to the opening operation. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a structural schematic diagram of the circuit breaker of the present application, at least showing the structure of the operating mechanism;

[0026] Figure 2 is an enlarged structural schematic diagram of part A of the circuit breaker of the present application; Figure 1

[0027] Figure 3 is an exploded structural schematic diagram of the circuit breaker of the present application, at least showing the first track mechanism and the first embodiment of the second track mechanism;

[0028] Figure 4 is a structural schematic diagram of the first embodiment of the closing button of the present application;

[0029] Figure 5 is a structural schematic diagram of the first embodiment of the opening button of the present application;

[0030] Figure 6 is a structural schematic diagram of the transmission member of the present application;

[0031] Figure 7 is a structural schematic diagram of the circuit breaker housing of the present application, at least showing the second embodiment of the first track mechanism;

[0032] Figure 8 is a structural schematic diagram of the second embodiment of the closing button of the present application;

[0033] Figure 9 is a structural schematic diagram of the second embodiment of the opening button of the present application;

[0034] Figure 10 is an assembly structural schematic diagram of the pulling member and the first locking member of the present application;

[0035] Figure 11A is an assembly structural schematic diagram of the pulling member and the first locking member of the present application, the pulling member retaining magnet and the pulling member operation part of the pulling member are magnetically attracted and matched on the circuit breaker housing;

[0036] Figure 11B is an assembly structural schematic diagram of the pulling member and the first locking member of the present application, the pulling member spring limiting part of the pulling member and the pulling member limiting rib are provided with a pulling member reset spring;

[0037] Figure 12 is an assembly structural schematic diagram of the pulling member and the first locking member of the present application, at this time, the pulling member driving part drives the first locking member to move to the inside of the circuit breaker housing through the linkage member;

[0038] Figure 13 ​is the assembly structure diagram of the drawing member and the first locking member of the application, at this time the first locking member has been completely moved into the circuit breaker shell, and the circuit breaker can be pulled out from the circuit breaker assembly position by continuing to draw the drawing member;

[0039] Figure 14 is the cooperation diagram of the first locking member and the button mechanism of the application, at this time the circuit breaker is in the closed state, and the first locking member is prevented from moving towards the inside of the circuit breaker shell by the tripping button;

[0040] Figure 15 is the cooperation diagram of the first locking member and the button mechanism of the application, at this time the circuit breaker is in the open state, and the button limiting groove of the tripping button is opposite to the limiting table of the first locking member, and the first locking member can move towards the inside of the circuit breaker shell;

[0041] Figure 16 is the structure diagram of the first embodiment of the first locking member of the application;

[0042] Figure 17 is the structure diagram of the second embodiment of the first locking member of the application;

[0043] Figure 18 is the structure diagram of the drawing member of the application;

[0044] Figure 19 is the structure diagram of the circuit breaker shell of the application, and the drawing member notch is arranged between the second outlet hole and the drawing member operation hole;

[0045] Figure 20 is the structure diagram of the circuit breaker shell of the application, and the drawing member notch is arranged between the tripping button hole and the drawing member operation hole;

[0046] Figure 21 is the assembly structure diagram of the second locking member of the application;

[0047] Figure 22 is the cooperation diagram of the second locking member and the button mechanism of the application, at this time the circuit breaker is in the open state, and the closing button drives the second locking member to rotate, so that the second locking end is retracted into the circuit breaker shell;

[0048] Figure 23 is the structure diagram of the closing button and the tripping button of the application, and the structure of the closing button driving part and the tripping button driving part is shown;

[0049] Figure 24 is the cooperation diagram of the second locking member and the button mechanism of the application, at this time the circuit breaker is in the closed state, and the tripping button drives the second locking member to rotate, so that the second locking end protrudes from the circuit breaker shell;

[0050] Figure 25is a structural schematic view of the circuit breaker shell of the present application, showing the positional relationship of the button hole, the outgoing line hole, the disconnection hole and the puller operating hole. DETAILED DESCRIPTION

[0051] The following embodiments are given to further illustrate the specific embodiments of the circuit breaker of the present application. The circuit breaker of the present application is not limited to the description of the following embodiments. Figures 1-25

[0052] As shown in the drawings, the circuit breaker of the present application, especially a plug-in circuit breaker, comprises a circuit breaker shell 1 and a button mechanism 2 arranged inside the circuit breaker shell 1, an operating mechanism connected with the button mechanism 2, a movable contact 60 connected with the operating mechanism and a fixed contact 61 used in cooperation with the movable contact 60; operating the button mechanism 2 can drive the circuit breaker to open / close through the operating mechanism, so as to make the movable contact 60 and the fixed contact 61 close / open. Figure 1 Of course, according to the needs, as shown in the drawings, the circuit breaker of the present application can further comprise a short-circuit protection mechanism 7 and an overload protection mechanism and an arc extinguishing system 8 arranged inside the circuit breaker shell 1; the short-circuit protection mechanism 7 and the overload protection mechanism respectively drive the operating mechanism to act when the circuit breaker appears short-circuit and overload faults, so as to trip the circuit breaker, to realize the basic circuit protection function; the arc extinguishing system 8 is used to extinguish the arc generated when the movable contact 60 and the fixed contact 61 are disconnected, which is beneficial to improve the breaking performance of the circuit breaker and improve the safety of electricity use.

[0053] Figure 1 As shown in the drawings, the circuit breaker shell 1 comprises a closing button hole 110 and an opening button hole 111 arranged thereon; the button mechanism 2 comprises a closing button 20 and an opening button 21 respectively slidingly arranged inside the circuit breaker shell 1, the closing button 20 comprises a closing button operating end arranged at one end thereof and slidingly arranged in the closing button hole 110, the opening button 21 comprises an opening button operating end arranged at one end thereof and slidingly arranged in the opening button hole 111; when the closing button operating end / opening button operating end is pressed to the inside of the circuit breaker shell 1 to drive the operating mechanism to close / open the circuit breaker, the corresponding opening button operating end / closing button operating end is moved to the outside of the circuit breaker shell 1 at the same time.

[0054] Further, as shown in the drawings, the circuit breaker shell 1 comprises a disconnection hole 112 and a puller operating hole 113 arranged thereon; the button mechanism 2 comprises a disconnection button 22 and a puller 30 respectively slidingly arranged inside the circuit breaker shell 1, the disconnection button 22 comprises a disconnection button operating end arranged at one end thereof and slidingly arranged in the disconnection hole 112, the puller 30 comprises a puller operating end arranged at one end thereof and slidingly arranged in the puller operating hole 113; when the disconnection button operating end is pressed to the inside of the circuit breaker shell 1 to drive the operating mechanism to disconnect the circuit breaker, the corresponding puller operating end is moved to the outside of the circuit breaker shell 1 at the same time. Figures 1-3

[0055] Figure 1 2 ​​​​​As shown, the operating mechanism includes a linkage mechanism, a transmission component 4 pivotally mounted within the circuit breaker housing 1, and a lever mechanism. The linkage mechanism includes a closing linkage 30, a opening linkage 31, and a transmission linkage 32. The other end of the closing button 20 is driven and connected to the transmission component 4 via the closing linkage 30, and the other end of the opening button 21 is driven and connected to the transmission component 4 via the opening linkage 31. The transmission component 4 is driven and connected to the lever mechanism via the transmission linkage 32. The lever mechanism is connected to the moving contact 60 of the circuit breaker. Pressing the closing button 20 causes the circuit breaker to open / close. When the circuit breaker is closed, the closing button 20 drives the transmission component 4 to rotate in the first direction via the closing linkage 30. Simultaneously, the rotation of the transmission component 4 drives the opening button 21 to move outwards from the circuit breaker housing 1 via the opening linkage 31. When the circuit breaker is opened by pressing the opening button 21, the opening button 21 drives the transmission component 4 to rotate in the second direction via the opening linkage 31. Simultaneously, the rotation of the transmission component 4 drives the closing button 20 to move outwards from the circuit breaker housing 1 via the closing linkage 30. The first and second directions are opposite to each other. The transmission component 4 functions similarly to the handle of a traditional miniature circuit breaker. The closing button 20 and the opening button 21 are linked to the transmission component 4 via a linkage. The linkage mechanism can employ existing four-bar or multi-bar designs.

[0056] An improvement of the circuit breaker of the present invention is that the button mechanism 2 includes a closing button 20 and an opening button 21. The user can press the closing button 20 / opening button 21 respectively to drive the circuit breaker to close / open. Furthermore, the closing button 20 and the opening button 21 move in opposite directions; that is, when the closing button 20 / opening button 21 is pressed towards the inside of the circuit breaker housing 1 to close / open the circuit breaker, the corresponding opening button 21 / closing button 20 simultaneously moves towards the outside of the circuit breaker housing 1. In other words, the user can observe the state of the closing button 20 and the opening button 21. The circuit breaker's state (closed or open) can be distinguished by its status. Firstly, compared to existing circuit breakers that use a push / pull button mechanism to achieve circuit breaker closing / opening, the circuit breaker of this invention achieves circuit breaker closing / opening by pressing a button, thus avoiding the situation where the circuit breaker is accidentally pulled out. Secondly, by observing the status of the closing button 20 and the opening button 21, the status of the circuit breaker can be determined, so there is no need to set up a separate closing / opening indicator device, which simplifies the structure of the circuit breaker and saves the internal space of the circuit breaker, and also contributes to the trend of miniaturization of circuit breakers.

[0057] Preferred, such as Figures 10-24 As shown, the circuit breaker of the present invention also includes a locking mechanism and an unlocking mechanism disposed inside the circuit breaker housing 1. Figures 10-18As shown, the locking mechanism includes a first locking member 1a protruding at one end outside the circuit breaker housing 1, and a locking member opening 17 on the circuit breaker housing 1 cooperating with the locking mechanism, and an assembly limiting hole on the assembly position shell of the circuit breaker assembly position, when the plug-in circuit breaker is assembled in place, the locking member opening 17 of the plug-in circuit breaker corresponds to the assembly limiting hole, when the plug-in circuit breaker is not installed in place, the locking member opening 17 of the plug-in circuit breaker is misaligned with the assembly limiting hole, and the assembly position shell will block the locking member opening 17, which is the prior art in the field, and will not be described here.

[0058] Another improvement of the present application is the structure of the locking cooperation, when the circuit breaker is in the open state, the first locking member 1a protrudes at one end outside the circuit breaker housing 1, and is subjected to a retracting external force to retract into the circuit breaker housing 1, and the first locking member 1a is limited to cooperate with the closing button 20 and / or the opening button 21, locking the closing button 20 and / or the opening button 21 to prevent the circuit breaker from closing; when the circuit breaker is in the closed state, the first locking member 1a protrudes at one end outside the circuit breaker housing 1, and is limited by the closing button 20 and / or the opening button 21 and cannot retract into the circuit breaker housing 1. When the first locking member 1a protrudes outside the circuit breaker housing 1, the first locking member 1a does not lock the closing button 20 and / or the opening button 21, and at this time the closing button 20 and / or the opening button 21 can normally operate the opening and closing.

[0059] Preferably, as shown in the drawings, Figures 10-17 As shown, before the circuit breaker is installed into the circuit breaker assembly position, if the circuit breaker is in the closed state, the first locking member 1a protrudes at one end outside the circuit breaker housing 1, and is limited by the closing button 20 and / or the opening button 21 and cannot retract into the circuit breaker housing 1, so that the circuit breaker cannot be inserted into the circuit breaker assembly position in the closed state;

[0060] When the circuit breaker is installed into the circuit breaker assembly position, the assembly position shell of the circuit breaker assembly position applies a retracting external force to the first locking member 1a during assembly, extruding the first locking member 1a to move it in the direction of the circuit breaker housing 1, retracting it into the circuit breaker housing 1, and making the first locking member 1a limited to cooperate with the closing button 20 and / or the opening button 21, locking the closing button 20 and / or the opening button 21 to prevent the circuit breaker from closing, so that the circuit breaker cannot be closed during assembly, improving safety;

[0061] After the circuit breaker is assembled, the locking hole 17 corresponds to the assembly limiting hole. The assembly housing does not apply a retracting force to the first locking member 1a. The first locking member 1a protrudes out of the circuit breaker housing 1 again. The unlocking button mechanism 2 is activated and the first locking member 1a is engaged with the assembly housing, so that the circuit breaker can be normally closed and opened by the closing button 20 or the opening button 21. It is not allowed to be pulled out of the circuit breaker assembly position at will, so that the vibration during transportation will not cause the circuit breaker to fall out of the circuit breaker assembly position.

[0062] After the circuit breaker is assembled in place, when the circuit breaker is in the closed state, the closing button 20 and / or the opening button 21 prevent the first locking member 1a from moving inward toward the inside of the circuit breaker housing 1, so that the circuit breaker cannot be pulled out from the assembly position when it is in the closed state.

[0063] Furthermore, such as Figures 10-13 As shown in Figure 18, when the circuit breaker is in the open state, the operation unlocking mechanism can drive the first locking member 1a to move towards the inside of the circuit breaker housing 1, retract into the inside of the circuit breaker housing 1, release the limiting cooperation between the first locking member 1a and the assembly housing, and limit the cooperation between the first locking member 1a and the button mechanism 2.

[0064] The locking mechanism of the circuit breaker of the present invention, in cooperation with the closing button 20 and / or the opening button 21, locks the closing button 20 and / or the opening button 21 when the circuit breaker is installed in the assembly position. This prevents the circuit breaker from being closed due to user misoperation / accidental contact during installation, thus ensuring user safety. Moreover, when the circuit breaker is in the closed state, the closing button 20 and / or the opening button 21 prevent the first locking member 1a from moving inward toward the inside of the circuit breaker housing 1. In other words, once the circuit breaker is closed, it cannot be installed in the assembly position or can not be arbitrarily pulled out of the assembly position. This ensures that the circuit breaker is installed in the open state or can be pulled out of the assembly position, thereby ensuring user safety.

[0065] It should be noted that the "locking / unlocking button mechanism 2" refers to the mechanism that, by engaging / releasing the limit engagement between the first locking member 1a and the button mechanism 2, it prevents / allows the closing button 20 and / or the opening button 21 to move in the designed direction (i.e., the closing direction or the opening direction).

[0066] The circuit breaker is assembled to the circuit breaker assembly position and after being assembled to the position, the first locking member 1a is in limited cooperation with the assembly position shell of the circuit breaker assembly position; the unlocking mechanism comprises a separate pulling member 2a which is in driving cooperation with the first locking member 1a, and when the circuit breaker is in the open state, pulling the pulling member 2a can drive the first locking member 1a to move towards the inside of the circuit breaker shell 1, retract into the inside of the circuit breaker shell 1, release the limited cooperation of the first locking member 1a with the assembly position shell, and the circuit breaker can be pulled out of the circuit breaker assembly position. Further, as shown in Figures 10-13 the unlocking mechanism further comprises a linkage member 3a which is in driving cooperation with the first locking member 1a at one end and in driving cooperation with the pulling member 2a at the other end, and pulling the pulling member 2a can drive the linkage member 3a to rotate, drive the first locking member 1a to move towards the inside of the circuit breaker shell 1, retract into the inside of the circuit breaker shell 1 and release the limited cooperation with the assembly position shell. Compared with the existing circuit breaker which adopts the pulling button to release the limited cooperation with the assembly position shell, another improvement point of the present application is that the circuit breaker is separately provided with the pulling member 2a of the unlocking mechanism, and the button mechanism is not used to unlock the first locking member, so that the situation of mistakenly pulling out the circuit breaker due to pulling the button is avoided. Moreover, the unlocking mechanism of the present application, the pulling member 2a is in driving cooperation with the first locking member 1a through the linkage member 3a, so that the fault tolerance of the unlocking mechanism is improved, the structural precision requirement of the pulling member 2a, the linkage member 3a and the first locking member 1a is reduced, the production difficulty is reduced and the production efficiency is improved.

[0067] Preferably, as shown in Figures 21-24 the locking mechanism comprises a second locking member 1b which is pivotally arranged on the circuit breaker shell 1 and comprises a second locking end 13b; pressing the closing button 20 drives the operating mechanism to close the circuit breaker, at the same time, the opening button 21 is moved towards the outside of the circuit breaker shell 1, the closing button 20 and / or the opening button 21 drives the second locking member 1b to rotate, the second locking end 13b protrudes outside the circuit breaker shell 1, and the second locking member 1b is limited by the closing button 20 and / or the opening button 21 and cannot retract into the inside of the circuit breaker shell 1; pressing the opening button 21 drives the operating mechanism to open the circuit breaker, at the same time, the closing button 20 is moved towards the outside of the circuit breaker shell 1, the opening button 21 and / or the closing button 20 drives the second locking member 1b to reversely rotate, and the second locking end 13b retracts into the circuit breaker shell 1.

[0068] Further, as shown in Figure 22 and 24As shown, when the circuit breaker is closed, the opening button 21 drives the second locking member 1b to rotate, so that the second locking end 13b protrudes outside the circuit breaker shell 1; when the circuit breaker is opened, the closing button 20 drives the second locking member 1b to rotate, so that the second locking end 13b is retracted into the circuit breaker shell 1. Of course, when the circuit breaker is closed, the second locking end 13b can also be driven by the closing button 20 to protrude outside the circuit breaker shell 1, and when the circuit breaker is opened, the second locking end 13b can be driven by the opening button 21 to retract into the circuit breaker shell 1. The circuit breaker of the present application further comprises a second locking member 1b, and the second locking end 13b of the second locking member 1b protrudes outside the circuit breaker shell 1 when the circuit breaker is closed, thereby avoiding the situation that the circuit breaker is installed into the circuit breaker assembly position in the closed state or pulled out of the circuit breaker assembly position in the closed state, and ensuring the electrical safety and personal safety of the user.

[0069] It should be noted that the first locking member 1a and the second locking member 1b of the locking mechanism of the present application have certain overlapping functions, and also have differences, and can exist simultaneously to improve the electrical safety of the circuit breaker. Of course, only the first locking member 1a or the second locking member 1b can also be provided. When the first locking member 1a and the second locking member 1b are provided simultaneously, the circuit breaker is closed outside the circuit breaker assembly position, then the first locking member 1a and the second locking member 1b both protrude outside the circuit breaker shell, and the circuit breaker cannot be installed into the circuit breaker assembly position; when the circuit breaker is installed into the circuit breaker assembly position, the first locking member 1a is pressed back into the circuit breaker shell by the assembly position shell to prevent the closing button from closing; when the circuit breaker is installed into the circuit breaker assembly position and closed, the first locking member 1a and the second locking member 1b both protrude outside the circuit breaker shell, and cannot be unlocked, and cannot be pulled out of the circuit breaker assembly position; when the circuit breaker is installed into the circuit breaker assembly position and opened, the second locking member 1b is retracted into the circuit breaker shell, and the first locking member 1a still protrudes outside the circuit breaker shell to prevent the circuit breaker from being separated from the circuit breaker assembly position in the case of shaking during transportation; when the circuit breaker is installed into the circuit breaker assembly position and opened, the pulling member 2a is pulled outward, the pulling member 2a pulls the first locking member 1a back into the circuit breaker shell to unlock, and the first locking member 1a is continuously pulled to pull the circuit breaker out of the cabinet.

[0070] Preferably, as shown in FIGS. Figure 19 、 20 and 25, it is an embodiment of the circuit breaker shell 1.

[0071] The circuit breaker housing 1 is a whole hexahedron mechanism, which comprises oppositely arranged front side wall 1001 and rear side wall 1002, outgoing line hole 112, button hole 110-111 and puller operation hole 113 arranged on the front side wall 1001, and incoming line hole 14 arranged on the rear side wall 1002. The outgoing line hole 112, button hole 110-111 and puller operation hole 113 of the circuit breaker housing 1 are centrally arranged on the front side wall 1001, which is more convenient for user operation. The incoming line hole 14 is arranged on the rear side wall 1002 opposite to the front side wall 1001, which is beneficial to increase the creepage distance of the incoming line end and outgoing line end, and is beneficial to improve the insulation performance of the circuit breaker. Further, as shown in Figure 25 The button hole 110-111 comprises side-by-side arranged closing button hole 110 and opening button hole 111. The above structure is beneficial to separately arrange the closing button and opening button of the circuit breaker, so that the closing / opening operation of the circuit breaker is realized by different structures. Compared with the existing circuit breaker, in which the closing / opening operation is realized by pressing / pulling the button, the circuit breaker avoids the situation that the circuit breaker is pulled out due to too much force when the circuit breaker is opened by pulling the button.

[0072] The circuit breaker of the present application will be further described below in combination with the drawings and specific embodiments.

[0073] As shown in Figures 1-3 The circuit breaker of the present application is an insertion type circuit breaker, which comprises circuit breaker housing 1, button mechanism 2 arranged inside the circuit breaker housing 1, operation mechanism connected with the button mechanism 2, movable contact 60 connected with the operation mechanism, and static contact 61 cooperated with the movable contact 60. The operation of the button mechanism 2 can drive the closing / opening of the circuit breaker through the operation mechanism, so that the movable contact 60 and the static contact 61 are closed / opened. Of course, according to the need, as shown in Figure 1 The circuit breaker of the present application can further comprise short-circuit protection mechanism 7 and overload protection mechanism arranged inside the circuit breaker housing 1, and arc extinguishing system 8. The short-circuit protection mechanism 7 and overload protection mechanism respectively drive the operation mechanism to act to trip the circuit breaker when the circuit breaker appears short-circuit and overload faults, so as to realize the basic circuit protection function. The arc extinguishing system 8 is used to extinguish the arc generated when the movable contact 60 and the static contact 61 are disconnected, which is beneficial to improve the breaking performance of the circuit breaker and improve the safety of electricity use. Further, the short-circuit protection mechanism 7 and overload protection mechanism are respectively electromagnetic release and bimetallic strip cooperated with the operation mechanism. The arc extinguishing system 8 is arc chamber arranged on one side of the movable contact and the static contact 61, which comprises arc chamber side wall and multiple arc grid plates arranged between the arc chamber side wall.

[0074] Preferably, as shown in Figures 1-9 It is an embodiment of the operation mechanism.

[0075] AsFigure 1 and 2 As shown in

[0076] Further, as shown in Figure 1 and 2 The operating mechanism comprises a link mechanism, a transmission member 4 pivotally arranged on the circuit breaker housing 1 and a lever mechanism, the link mechanism comprises a closing link 30, an opening link 31 and a transmission link 32; the closing button 20 is drivingly connected with the transmission member 4 through the closing link 30 at the other end, the opening button 21 is drivingly connected with the transmission member 4 through the opening link 31 at the other end, the transmission member 4 is drivingly connected with the lever mechanism through the transmission link 32, and the lever mechanism is connected with the movable contact 60 of the circuit breaker; when the closing button 20 is pressed towards the inside of the circuit breaker housing 1 to close the circuit breaker, the closing button 20 drives the transmission member 4 to rotate in a first direction through the closing link 30, and the rotation of the transmission member 4 drives the opening button 21 to move towards the outside of the circuit breaker housing 1 through the opening link 31; when the opening button 21 is pressed towards the inside of the circuit breaker housing 1 to open the circuit breaker, the opening button 21 drives the transmission member 4 to rotate in a second direction through the opening link 31, and the rotation of the transmission member 4 drives the closing button 20 to move towards the outside of the circuit breaker housing 1 through the closing link 30, the first direction and the second direction are opposite directions.

[0077] Further, as shown in Figure 1 and 2As shown, the lever mechanism includes a trip latch 50, a latch 51, and a rotating plate 52. The rotating plate 52 is pivotally mounted on the circuit breaker housing 1. The trip latch 50 and the latch 51 are locked together and pivotally mounted on the rotating plate 52. The rotating plate 52 is connected to the moving contact 60. The transmission component 4 is driven to the trip latch 50 via the transmission link 32. The rotation of the transmission component 4 in the first direction drives the lever mechanism to rotate in the first direction via the transmission link 32. The lever mechanism causes the moving contact 60 to swing, thereby closing the circuit breaker. The rotation of the transmission component 4 in the second direction drives the trip latch 50 to rotate in the second direction via the transmission link 32, thereby releasing the latch 50 from the latch 51 and opening the circuit breaker. When the circuit breaker experiences a short circuit or overload fault, the short circuit protection mechanism 7 or the overload protection mechanism activates the latch 51 to release the latch 50 from the latch 51, thereby tripping the circuit breaker and providing protection. Furthermore, the moving contact 60 is connected to the rotating plate 52 via an elastic element to achieve overtravel of the moving contact 60. Of course, the linkage mechanism can also employ other solutions, all of which fall within the scope of protection of this invention. Preferably, such as... Figure 6 The image shows one embodiment of the transmission component 4.

[0078] like Figure 6 As shown, the transmission component 4 includes a transmission component shaft hole 400, a first connecting hole 40, a second connecting hole 41, and a third connecting hole 42. The first connecting hole 41, the second connecting hole 41, and the third connecting hole 42 are located at the three vertices of a triangle. The transmission component shaft hole 400 is located in the middle of the transmission component 4. The first connecting hole 40 and the third connecting hole 42 are located on one side of the transmission component shaft hole 400, and the second connecting hole 41 is located on the other side of the transmission component shaft hole 400. The transmission component 4 is pivotally mounted on the circuit breaker housing 1 through its transmission component shaft hole 400. The transmission component 4 is connected to the closing linkage 30, the opening linkage 31, and the transmission linkage 32 through the first connecting hole 40, the second connecting hole 41, and the third connecting hole 42, respectively.

[0079] Specifically, such as Figure 1 In the direction shown, with Figure 1 The top, bottom, left, and right sides refer to the top, bottom, left, and right sides of the circuit breaker. Figure 1The side facing the reader is the front side of the circuit breaker; the upper side wall of the circuit breaker housing 1 is provided with a closing button hole 110 and an opening button hole 111; the upper end of the closing button 20 is a closing button operating end, which is slidingly arranged in the closing button hole 110, and the upper end of the opening button 21 is an opening button operating end, which is slidingly arranged in the opening button hole 111; the lower end of the closing button 20 is drivingly connected with the first connecting hole 40 at the right end of the transmission member 4 through a closing link 30, and the lower end of the opening button 21 is drivingly connected with the second connecting hole 41 at the left end of the transmission member 4 through an opening link 31, the third connecting hole 42 at the right end of the transmission member 4 is drivingly connected with the jump catch 50 through a transmission link 32, and the transmission member 4 is pivotally arranged on the transmission member mounting shaft 104 on the circuit breaker housing 1 through the transmission member shaft hole 400 in the transmission member 4; when the closing button 20 is pressed downward, the closing button 20 drives the transmission member 4 to rotate in the clockwise direction (first direction) through the closing link 30, and the transmission member 4 simultaneously drives the movable contact 60 to swing clockwise through the transmission link 31, the jump catch 50 and the lock catch 51 matched with the lock catch 51, and the rotating plate 52, and the movable contact 60 is closed with the static contact 61, so that the circuit breaker enters the closing state; when the opening button 21 is pressed downward, the opening button 21 drives the transmission member 4 to rotate in the counterclockwise direction (second direction) through the opening link 31, and the transmission member 4 drives the jump catch 50 to swing counterclockwise through the transmission link 31, so that the lock catch cooperation between the jump catch 50 and the lock catch 51 is released, and the rotating plate 52 drives the movable contact 60 to swing counterclockwise, so that the movable contact 60 is disconnected with the static contact 61, and the circuit breaker enters the opening state.

[0080] Preferably, the closing button operating end and the opening button operating end are respectively provided with a first mark and a second mark for identifying the closing and opening states, the first mark and the second mark both include color marks and / or symbol marks, the first mark is used for identifying the closing state, and the corresponding second mark is used for identifying the opening; or the first mark is used for identifying the opening state, and the second mark is used for identifying the closing state. Further, the color marks and the text marks of the closing button operating end and the opening button operating end are different; for example, the color mark and the symbol mark of the closing button operating end can be red and an opening symbol (O) respectively, and the color mark and the symbol mark of the opening button operating end can be green and a closing symbol (I) respectively; when the circuit breaker is closed, the closing button operating end enters the closing button hole 110, and the opening button operating end protrudes on the opening button hole 111, so that the green color mark and / or the closing symbol (I) can be used to judge that the circuit breaker is in the closing state; conversely, when the circuit breaker is opened, the opening button operating end enters the opening button hole 111, and the closing button operating end protrudes on the closing button hole 110, so that the red color mark and / or the opening symbol (O) can be used to judge that the circuit breaker is in the opening state. The first mark and the second mark on the closing button operating end and the opening button operating end are beneficial to the user to more intuitively observe and judge the state of the circuit breaker, and are beneficial to improving the safety of the user in using electricity.

[0081] Preferably, as shown in Figures 3-5 , 7-9, the closing button 20 and the opening button 21 of the circuit breaker of the present application are both in the shape of a strip, and the closing button 20 and the opening button 21 are arranged in parallel and installed linearly in the circuit breaker housing 1, and further comprising a first track mechanism and a second track mechanism for defining the moving path of the closing button 20 and the opening button 21 respectively.

[0082] Preferably, as shown in Figures 3-5 , the first track mechanism and the second track mechanism are the first embodiment.

[0083] Preferably, as shown in Figures 3-5 , the first track mechanism comprises a closing button track platform 201 arranged on the closing button 20 and a closing button track slot 101 arranged on the circuit breaker housing, and the closing button track platform 201 is arranged slidingly in the closing button track slot 101; the second track mechanism comprises an opening button track slot arranged on the circuit breaker housing 1, and the opening button 21 is arranged slidingly in the opening button track slot. Further, as shown in Figure 3 , the circuit breaker housing 1 comprises a first rib 105, and the closing button track slot 101 and the opening button track slot are arranged on both sides of the first rib 105; the closing button track slot 101 is surrounded by the first rib 105 and a side wall of the circuit breaker housing 1 opposite to the first rib 105; the circuit breaker housing 1 further comprises a second rib 102 opposite to the first rib 105, and the opening button track slot is surrounded by the first rib 105 and the second rib 102.

[0084] Preferably, as shown in Figure 4 , the closing button 20 comprises a closing button operating part 202 and a closing button transmission part 203, one end of the closing button operating part 202 is a closing button operating end, and the other end is connected to the closing button transmission part 203 in a stacked manner, and the other end of the closing button transmission part 203 is provided with a closing button connecting hole 204 and a closing button track platform 201, the closing button connecting hole 204 is connected to one end of the closing link 30 of the operating mechanism, and the closing button track platform 201 and the closing button operating part 202 are located on the same side of the closing button transmission part 203. Specifically, as shown in the direction of Figure 4 , the left end of the closing button operating part 202 is a closing button operating end, and the right end is connected to the left end of the closing button transmission part 203 in a stacked manner, and the right end of the closing button transmission part 203 is provided with a closing button connecting hole 204 and a closing button track platform 201, and the closing button transmission part 202 and the closing button track platform 201 are located on the lower side of the closing button transmission part 203. Of course, the other end of the closing button operating part 202 can also be connected to the closing button transmission part 203 horizontally, located in the same plane, rather than a stacked connection structure.

[0085] Preferably, as shown inFigure 5 As shown in the figure, the opening button 21 comprises an opening button operating part 212 and an opening button transmission part 213. One end of the opening button operating part 212 is an opening button operating end, and the other end is connected with one end of the opening button transmission part 213. The other end of the opening button transmission part 213 is provided with an opening button connecting hole 214, which is connected with one end of the opening link 31 of the operating mechanism. Specifically, as shown in the figure, Figure 5 As shown in the figure, the opening button 21 is in the shape of a long strip as a whole. The left end of the opening button operating part 212 is the opening button operating end, and the right end is connected with the opening button transmission part 213. The right end of the opening button transmission part 213 is provided with the opening button connecting hole 214, which is located at the lower side of the opening button transmission part 213.

[0086] Specifically, as shown in the figure, Figure 3 As shown in the figure, the first rib 105 is arranged on the circuit breaker shell 1 to form a closing button track groove 101 with the left side wall of the circuit breaker shell 1. The second rib 102 is arranged on the right side of the first rib 105, and the two ribs form an opening button track groove. The closing button operating end is slidingly arranged in the closing button hole 110, and the closing button track table 201 is slidingly arranged in the closing button track groove 101 to limit the movement path of the closing button 20. The opening button operating end is slidingly arranged in the opening button hole 111, and the opening button transmission part 213 is slidingly arranged between the first rib 105 and the second rib 102 to limit the movement path of the opening button 21.

[0087] As shown in the figure, Figures 7-9 As shown in the figure, the first track mechanism and the second track mechanism are the second embodiment.

[0088] As shown in the figure, Figures 7-9 As shown in the figure, the first track mechanism comprises a closing button track table 201 arranged on the closing button 20 and a closing button track groove 101 arranged on the circuit breaker shell 1. The closing button track table 201 is slidingly arranged in the closing button track groove 101. The second track mechanism comprises an opening button track strip 205 arranged on the closing button 20 along the length direction of the closing button 20 and an opening button track groove 2150 arranged on the opening button 21. The opening button track groove 2150 slidingly cooperates with the opening button track strip 205.

[0089] Preferably, as shown in the figure, Figure 8As shown, the closing button 20 includes a closing button operating part 202, a closing button transmission part 203, and a tripping button rail strip 205. One end of the closing button operating part 202 is a closing button operating end, and the other end is connected to one end of the closing button transmission part 203 in a stacked manner. The other end of the closing button transmission part 203 is provided with a closing button connecting hole 204 and a closing button rail platform 201. The tripping button rail strip 205 is arranged on one side of the closing button transmission part 203, and the tripping button rail strip 205 and the closing button operating part 202 are located on the same side of the closing button transmission part 203. The closing button connecting hole is connected to one end of the closing link 30 of the operating mechanism. Specifically, as shown in Figure 8 As shown in the direction, the upper end of the closing button operating part 202 is a closing button operating end, and the lower end is connected to the upper end of the closing button transmission part 203 in a stacked manner. The lower end of the closing button transmission part 203 is provided with a closing button rail platform 201 and a closing button connecting hole 204. The tripping button rail strip 205 is arranged between the closing button operating part 202 and the closing button connecting hole 204 and located on the right side of the closing button transmission part 203, and is connected to the two respectively. The tripping button rail platform 201 is arranged on the left side of the closing button transmission part 203. Further, as shown in Figure 8 As shown in the direction, the upper end of the closing button operating part 202 is a closing button operating end, and the lower end is connected to the upper end of the closing button transmission part 203 in a stacked manner. The lower end of the closing button transmission part 203 is provided with a closing button rail platform 201 and a closing button connecting hole 204. The tripping button rail strip 205 is arranged between the closing button operating part 202 and the closing button connecting hole 204 and located on the right side of the closing button transmission part 203, and is connected to the two respectively. The tripping button rail platform 201 is arranged on the left side of the closing button transmission part 203. Further, as shown in

[0090] Preferably, as shown in Figure 9 As shown, the tripping button 21 includes a tripping button operating part 212, a tripping button transmission part 213, a tripping button rail part 215, and a tripping button connecting hole 214. One end of the tripping button operating part 212 is a tripping button operating end, and the other end is connected to one end of the tripping button transmission part 213. The other end of the tripping button transmission part 213 is provided with a tripping button connecting hole 214. The tripping button rail part 215 is arranged on one side of the tripping button transmission part 213. The side of the tripping button rail part 215 facing the closing button transmission part 203 is provided with a tripping button rail groove 2150. Specifically, as shown in Figure 9 As shown in the direction, the left end of the tripping button operating part 212 is a tripping button operating end, and the right end is connected to the left end of the tripping button transmission part 213. The right end of the tripping button transmission part 213 is provided with a tripping button connecting hole 214. The tripping button rail part 215 is arranged on the back side of the right end of the tripping button transmission part 213. The lower side of the tripping button rail part 215 is provided with a tripping button rail groove 2150.

[0091] Specifically, as shown in Figure 7 As shown, the first rail mechanism includes a third rib 1010 arranged on the circuit breaker housing 1. A closing button rail groove 101 is arranged in the middle of the third rib 1010 along the length direction of the third rib 1010; as shown in Figure 8As shown, the closing button 20 further comprises a closing button bottom foot 206, which is arranged at one end of the closing button transmission part 203 connected with the closing button operation part 202, and the closing button operation part 202 is arranged at both ends of the closing button transmission part 203 respectively, and the closing button rail strip 205 is arranged between the closing button operation part 202 and the closing button connecting hole 204 and connected with both of them respectively; the closing button operation end is slidingly arranged in the closing button hole 110, the closing button bottom foot 206 is slidingly matched with the third rib 1010, the closing button rail platform 201 is slidingly arranged in the closing button rail groove 101, and the moving path of the closing button 20 is defined; the opening button operation end is slidingly arranged in the opening button hole 111, the opening button rail part 215 is arranged on one side of the closing button operation part 203, the opening button rail groove 2150 is slidingly matched with the opening button rail strip 205, and the moving path of the opening button is defined.

[0092] Preferably, as shown in the drawings, Figures 10-24 As shown, the circuit breaker of the application further comprises a locking mechanism arranged inside the circuit breaker shell 1, and the locking design of the locking mechanism is one of the improvements of the application.

[0093] Preferably, as shown in the drawings, Figures 10-17 As shown, the locking mechanism comprises a first locking member 1a protruding outside the circuit breaker shell 1 at one end, the circuit breaker shell 1 comprises a locking member opening 17 matched with the first locking member 1a, the first locking member 1a extends outside the circuit breaker shell 1 at one end through the locking member opening 17, and when the circuit breaker is in the open state, the first locking member 1a can be retracted into the circuit breaker shell 1 under the retraction external force; for example, when the circuit breaker is installed in the circuit breaker assembly position, during the assembly process, the assembly position shell of the circuit breaker assembly position extrudes the first locking member 1a to move it in the direction of the circuit breaker shell 1 (the assembly position shell applies the retraction external force to the first locking member 1a), so that the first locking member 1a is limited and matched with the closing button 20 and / or the opening button 21, and the closing button 20 and / or the opening button 21 are locked to make the circuit breaker unable to close; after the circuit breaker is assembled, the locking member opening 17 corresponds to the assembly limiting hole of the assembly position shell, the first locking member 1a protrudes outside the circuit breaker shell 1 again from the locking member opening 17 and releases the limiting cooperation with the closing button 20 and / or the opening button 21, the button mechanism is unlocked, and the first locking member 1a is limited and matched with the assembly limiting hole of the assembly position shell, so that the circuit breaker can be normally closed and opened through the closing button 20 or the opening button 21, and it is not allowed to be pulled out from the assembly position at will.

[0094] Further, as shown in the drawings, Figures 14-17As shown in the drawings, the closing button 20 and / or the opening button 21 comprises a button limiting slot 216 for limiting cooperation with the first locking member 1a, and the first locking member 1a comprises a first locking member limiting platform 14a matched with the button limiting slot 216; when the circuit breaker is in the closing state, the button limiting slot 216 is arranged in dislocation with the first locking member limiting platform 14a, and the closing button 20 and / or the opening button 21 prevents the first locking member 1a from moving towards the inside of the circuit breaker shell 1; when the circuit breaker is in the opening state, the button limiting slot 216 is arranged opposite to the first locking member limiting platform 14a, and the first locking member 1a can move towards the inside of the circuit breaker shell 1, so that the first locking member limiting platform 14a slides into the button limiting slot 216.

[0095] Preferably, as shown in the drawings, Figures 10-15 As shown in the drawings, the closing button 20 and the opening button 21 are arranged in parallel and linearly slidably installed in the circuit breaker shell 1, the first locking member 1a is linearly movably installed in the shell 6, and the moving direction of the closing button 20 and the opening button 21 is perpendicular to the moving direction of the first locking member 1a. Further, as shown in the drawings, Figures 10-15 As shown in the drawings, the locking mechanism further comprises a first reset spring 5a arranged between the first locking member 1a and the circuit breaker shell 1, and the first reset spring 5a applies a force to the first locking member 1a, so that one end of the first locking member 1a remains protruding outside the circuit breaker shell 1 without other external force intervention; when the circuit breaker is in the opening state, the first locking member 1a is subjected to a retracting force and can retract into the circuit breaker shell 1.

[0096] Specifically, as shown in the drawings, Figure 14 and 15 As shown in the drawings, the closing button 20 and the opening button 21 can move left and right and move in opposite directions synchronously, and the first locking member 1a can move up and down; as shown in the drawings, Figure 14 As shown in the drawings, when the circuit breaker is in the closing state, the button limiting slot 216 of the opening button 21 is arranged in dislocation with the first locking member limiting platform 14a of the first locking member 1a, and the first locking member 1a cannot move to the downside; as shown in the drawings, Figure 15 As shown in the drawings, when the circuit breaker is in the opening state, the button limiting slot 216 of the opening button 21 is arranged opposite to the first locking member limiting platform 14a of the first locking member 1a, and the first locking member 1a can move downwards, so that the first locking member limiting platform 14a slides into the button limiting slot, thereby limiting the left and right movement of the opening button 21 and the closing button 20. It should be noted that the button limiting slot 216 can also be arranged on the closing button 20, as long as the button limiting slot 216 is arranged in dislocation with the first locking member limiting platform 14a when the circuit breaker is in the closing state, and the button limiting slot 216 is arranged opposite to the first locking member limiting platform 14a when the circuit breaker is in the opening state.

[0097] Further, as shown in the drawings,Figure 14 and 15 As shown in the figure, the closing button 20 is arranged in parallel with the opening button 21, the closing button 20 and the first locking member 1a are both above the opening button 21, that is, the closing button 20 and the first locking member 1a are both between the opening button 21 and the locking member opening 17, the first locking member 1a is on one side of the closing button 20, the opening button 21 comprises a button limiting groove 216 for limiting cooperation with the first locking member 1a, the first locking member 1a comprises a first locking member limiting table 14a matched with the button limiting groove 216, the closing button 20 is provided with a closing button avoiding groove 206 for avoiding the first locking member limiting table 14a of the first locking member 1a. When the first locking member 1a extends outside the circuit breaker shell 1, the first locking member limiting table 14a is located in the closing button avoiding groove 206, the width of the closing button avoiding groove 206 is much larger than the width of the first locking member limiting table 14a in the moving direction of the closing button 20, so that the closing button 20 will not contact the first locking member limiting table 14a when the closing button 20 moves, and the closing button 20 and the opening button 21 can move to drive the circuit breaker to close and open; when the circuit breaker is in the closing state, the button limiting groove 216 and the first locking member limiting table 14a are arranged in dislocation, and the first locking member limiting table 14a is located in the closing button avoiding groove 206, the opening button 21 prevents the first locking member 1a from moving to the inside of the circuit breaker shell 1; when the circuit breaker is in the opening state, the button limiting groove 216 and the first locking member limiting table 14a are arranged in opposition, the first locking member 1a can move to the inside of the circuit breaker shell 1 under the inward compression force, so that the first locking member limiting table 14a slides into the button limiting groove 216.

[0098] In the preferred embodiment, the closing button 20 and the first locking member 1a are arranged in the same plane and are both above the opening button 21, so that the structure is more compact, the closing button 20 is provided with the closing button avoiding groove 206 for avoiding the first locking member limiting table 14a of the first locking member 1a, so that the closing button 20 can move without influence when closing or opening; and the first locking member 1a can also abut against the opening button 21 to cooperate in unlocking and locking, so that the first locking member 1a needs to move a short distance, the first locking member limiting table 14a corresponds to the button limiting groove 216 of the opening button 21 when opening, so that the first locking member 1a can be compressed into the circuit breaker shell 1, the first locking member limiting table 14a is limited by the opening button 21 when closing, so that the first locking member 1a cannot be compressed into the circuit breaker shell 1 and cannot be pulled out from the circuit breaker assembly position in the closing state.

[0099] Preferably, as Figures 10-13, 18, the circuit breaker further comprises an unlocking mechanism connected with the first locking member 1a; when the circuit breaker is in the open state, operating the unlocking mechanism can drive the first locking member 1a to move towards the inside of the circuit breaker shell 1, retract into the inside of the circuit breaker shell 1, and release the limiting cooperation with the assembly position shell and the limiting cooperation with the button mechanism 2; when the circuit breaker is in the closed state, the closing button 20 and / or the opening button 21 prevent the first locking member 1a from moving towards the inside of the circuit breaker shell 1, ensuring that the closed state cannot be unlocked, and ensuring the safety of power use.

[0100] Further, as shown in Figures 10-13 , the unlocking mechanism comprises a separate pulling member 2a cooperating with the first locking member 1a; when the circuit breaker is in the open state, pulling the pulling member 2a can drive the first locking member 1a to move towards the inside of the circuit breaker shell 1, so that the first locking member 1a releases the limiting cooperation with the assembly position shell. Further, as shown in Figures 10-13 , the unlocking mechanism further comprises a linkage member 3a and a lever support 4a arranged on the circuit breaker shell 1, one end of the linkage member 3a is connected with the first locking member 1a, the other end cooperates with the pulling member 2a, and the middle part cooperates with the lever support 4a; pulling the pulling member 2a can drive the linkage member 3a to rotate around the lever support 4a, and the linkage member 3a drives the first locking member 1a to move towards the inside of the circuit breaker shell 1 and release the limiting cooperation with the assembly position shell. As another embodiment, the unlocking mechanism can also not be provided with the lever support 4a, but the linkage member 3a is rotatably installed in the circuit breaker shell 1 through the cooperation of a waist-shaped hole arranged on the linkage member 3a and a linkage member rotating shaft fixed on the circuit breaker shell 1, one end cooperates with the pulling member 2a, and the other end cooperates with the first locking member 1a; when the pulling member 2a is pulled, the linkage member 3a is driven to rotate, the other end of the linkage member 3a acts on the first locking member 1a, and the first locking member 1a retracts into the inside of the circuit breaker shell 1.

[0101] Compared with the existing circuit breaker which releases the limiting cooperation with the assembly position shell by pulling the button, the circuit breaker of the present application has another improvement, that is, the circuit breaker is separately provided with the pulling member 2a of the unlocking mechanism, and the first locking member is not unlocked by the button mechanism, so that the situation of mistakenly pulling out the circuit breaker by pulling the button is avoided. It should be pointed out that the independent pulling member 2a of the present application is not only applicable to the scheme of the closing button 20 and the opening button 21 of the present application, but also can be used in the case of one button realizing the opening and closing operation.

[0102] It should be pointed out that as a transformed embodiment, the first locking member 1a can not be provided with the first locking member limiting table 14a, so that no matter whether the circuit breaker is closed or opened, pulling the pulling member 2a can drive the first locking member 1a to move towards the inside of the circuit breaker shell 1.

[0103] Preferably, as shown in Figure 17 , it is a first embodiment of the first locking member 1a.

[0104] As shown in Figure 17 , the first locking member 1a comprises a first locking member body 10a, a first locking member stop 11a, a first locking member limiting platform 14a and a locking member spring limiting structure 15a; the first locking member stop 11a and the first locking member limiting platform 14a are respectively arranged on both sides of the first locking member body 10a, and the locking member spring limiting structure 15a is arranged on the side of the first locking member body 10a away from the locking member opening 17; one end of the first locking member body 10a protrudes outside the circuit breaker shell 1 through the locking member opening 17 arranged on the circuit breaker shell 1, and the other end is connected with the first reset spring 5a through the locking member spring limiting structure 15a; one end of the first reset spring 5a is limitedly matched with the locking member limiting structure 15a, and the other end is limitedly matched with the circuit breaker shell 1; the first locking member stop 11a is limitedly matched with the circuit breaker shell 1 to prevent the first locking member 1a from being pulled out through the locking member opening 17. Further, as shown in Figure 17 , the first locking member 1a further comprises a first locking member driven part 130a connected with the linkage 3a of the unlocking mechanism; the first locking member driven part 130a is provided with a first locking member connecting hole 13a in the middle, and one end of the linkage 3a is inserted into the first locking member connecting hole 13a; the first locking member driven part 130a is arranged on one side of the first locking member body 10a and between the first locking member body 10a and the lever support 4a. Further, as shown in the figure, the locking member spring limiting structure 15a is a spring limiting groove.

[0105] Preferably, as shown in Figure 16 , it is a second embodiment of the first locking member 1a.

[0106] As shown in Figure 16 , the difference between the first locking member 1a of the present embodiment and the first embodiment is that the protruding first locking member driven part 130a is not arranged, but one end of the first locking member body 10a protrudes outside the circuit breaker shell 1, and the other end is provided with a first locking member connecting hole 13a as the first locking member driven part 130a. Further, as shown in Figure 17 , the locking member spring limiting structure 15 is a spring limiting boss. Obviously, the first locking member 1a can also be provided with other similar structures according to needs.

[0107] Preferably, as shown in Figure 10 , 11A , 11B and 18, it is a plurality of embodiments of the pulling member 2a.

[0108] The pulling member 2a comprises a pulling member operation part 20a, a pulling member first transition part 21a, and a pulling member driving part 24a, the pulling member operation part 20a is connected with the pulling member first transition part 21a vertically, and the pulling member driving part 24a is obliquely connected with the pulling member first transition part 21a; the pulling member operation part 20a is an operation part for being pulled by hands or tools, the pulling member first transition part 21a is a sliding support parallel to the moving direction of the pulling member 2a, and the pulling member driving part 24a is obliquely arranged for driving the linkage member 3a to retract the first locking member 1a into the circuit breaker housing 1. One embodiment is that the pulling member 2a only comprises the pulling member operation part 20a, the pulling member first transition part 21a, and the pulling member driving part 24a, at this time, the pulling member 2a forms a Z-shaped structure or a U-shaped structure, the Z-shaped structure occupies a relatively large space, and the U-shaped structure has poor sliding stability with the locking mechanism.

[0109] Further preferred embodiments are shown in Figure 11A The pulling member 2a further comprises a pulling member second transition part 22a connected between the pulling member first transition part 21a and the pulling member driving part 24a, the pulling member second transition part 22a is parallel to the pulling member operation part 20a and perpendicular to the pulling member first transition part 21a, the pulling member second transition part 22a and the pulling member operation part 20a are located on one side of the pulling member first transition part 21a to form a U-shaped structure, the space occupied by the pulling member 2a is reduced by bending, the pulling member second transition part 22a can be used to pull out the circuit breaker and limit the position of the pulling member 2a, and the pulling member driving part 24a is obliquely bent away from the pulling member operation part 20a and close to the pulling member first transition part 21a.

[0110] Further preferred embodiments are shown in Figure 11B The pulling member 2a further comprises a pulling member third transition part 23a arranged between the pulling member second transition part 22a and the pulling member driving part 24a, the pulling member third transition part 23a is arranged parallel to the pulling member first transition part 21a, for balancing the sliding of the pulling member 2a and adjusting the position of the pulling member driving part 24a; and / or a pulling member retaining part 25a connected with the pulling member driving part 24a, the pulling member retaining part 25a is parallel to the pulling member first transition part 21a, after the oblique pulling member driving part 24a gradually drives the linkage member 3a to retract the first locking member 1a into the circuit breaker housing 1, the pulling member retaining part 25a keeps the linkage member 3a and the first locking member 1a in the retracted position.

[0111] As Figure 18The preferred embodiment of the pulling piece 2a shown comprises a pulling piece operation part 20a, a pulling piece first transition part 21a, a pulling piece second transition part 22a, a pulling piece third transition part 23a, a pulling piece driving part 24a and a pulling piece holding part 25a connected in sequence; the pulling piece operation part 20a and the pulling piece second transition part 22a are arranged in parallel, the pulling piece first transition part 21a, the pulling piece third transition part 23a and the pulling piece holding part 25a are arranged in parallel and perpendicularly to the pulling piece operation part 20a, the pulling piece driving part 24a is arranged obliquely, one end connected to the pulling piece third transition part 23a by bending is the driving part first end, one end connected to the pulling piece holding part 25a by bending is the driving part second end, and the driving part first end is away from the driving part second end relative to the first locking piece 1a. Further, the pulling piece 2a is integrally formed by stamping and bending from a metal material.

[0112] Preferably, as shown in Figures 10-13 The circuit breaker housing 1 further comprises a pulling piece limiting rib 6a arranged between the pulling piece operation part 20a and the pulling piece second transition part 22a; after the pulling of the pulling piece 2a drives the first locking piece 1a to retract inside the circuit breaker housing 1 and release the limiting cooperation with the assembly position shell, the pulling of the pulling piece 2a is continued to make it limit cooperate with the pulling piece limiting rib 6a, and the circuit breaker is pulled out from the circuit breaker assembly position.

[0113] Specifically, as shown in the directions of Figure 10 , 11A and 11B, the right end of the first locking piece 1a protrudes outside the circuit breaker housing 1, the left end is connected to the right end of the linkage 3a and connected to the circuit breaker housing 1 through the first reset spring 5a, the middle part of the linkage 3a is in contact with the lever support 4a arranged above the first locking piece 1a, the left end of the linkage 3a is drivingly cooperated with the pulling piece driving part 24a, and the upper end and the lower end of the pulling piece driving part 24a are the driving part first end and the driving part second end respectively; when the circuit breaker is in the open state, the pulling piece 2a is pulled upward until the pulling piece driving part 24a contacts the left end of the linkage 3a (as shown in Figure 12 , and as shown in Figure 13 , the pulling of the pulling piece 2a is continued to drive the linkage 3a to rotate clockwise with the lever support 4a as the fulcrum, then the right end of the linkage 3a drives the first locking piece 1a to move to the left side, and the right end of the first locking piece 1a is completely retracted into the circuit breaker housing 1 and limit cooperates with the button mechanism 2, thereby releasing the limiting cooperation between the first locking piece 1a and the assembly position shell, and the pulling piece holding part 25a limit cooperates with the left end of the linkage 3a, so that the first locking piece 1a is kept inside the circuit breaker housing 1.

[0114] Preferably, as shown in Figure 11AAs shown, the pull-out member 2a is made of a metallic magnetic material. The unlocking mechanism also includes a pull-out member retaining magnet disposed inside the circuit breaker housing 1 and cooperating with the pull-out member operating part 20a. The retaining magnet is installed in a groove 105 on the circuit breaker housing 1 and magnetically engages with the pull-out member operating part 20a. The pull-out member retaining magnet can reliably hold the pull-out member operating part 20a inside the circuit breaker housing. When the pull-out member 2a is not operated, it ensures the clean and aesthetically pleasing appearance of the circuit breaker and prevents the pull-out member 2a from unintentionally protruding from the circuit breaker housing 1, which could lead to misoperation or damage to the pull-out member 2a. Furthermore, when the pull-out member 2a is pulled out to the correct position, the second transition part 22a of the pull-out member can also magnetically engage with the pull-out member retaining magnet, keeping the pull-out member in the pulled-out position outside the circuit breaker housing 1.

[0115] It should be noted that the "magnetic attraction" refers to the fact that the operating part 20a of the drawing member is attracted by the holding magnet of the drawing member. The fact that the drawing member 2a is made of a metallic magnetic material means that it can be magnetically attracted by the holding magnet of the drawing member, and it does not necessarily have to be a magnet.

[0116] Preferred, such as Figure 1 , 19 As shown in Figures 20 and 25, the circuit breaker housing 1 also includes a line outlet hole 112 and a pull-out component operation hole 113. The line outlet hole 112, the pull-out component operation hole 113, the closing button hole 110, and the opening button hole 111 are located on the same side wall of the circuit breaker housing 1. The circuit breaker housing 1 also includes a pull-out component slot 16. The pull-out component operation part 20a of the pull-out component 2a is disposed in the pull-out component operation hole 113, so that the pull-out component 2a does not protrude outside the circuit breaker housing 1 when it is not pulled outward. The pull-out component slot 16 communicates with the pull-out component operation hole 113, and the pull-out operation is performed through the pull-out component slot 16.

[0117] Further, preferably, the pulling member notch 16 is arranged between the outgoing line hole 112 and the pulling member operation hole 113 and is shielded by the outgoing line, and the pulling member notch 16 is in communication with the outgoing line hole 112 and the pulling member operation hole 113 at both ends, respectively, and the pulling member operation part 20a can be pulled out of the pulling member operation hole 113 at the pulling member notch 16 only when the outgoing line is removed; or, as another preferred solution, the pulling member notch 16 is arranged between the disconnecting button hole 111 and the pulling member operation hole 113, and the disconnecting button 21 shields the pulling member notch 16 when the circuit breaker is in the closed state, and the disconnecting button 21 moves to the inside of the circuit breaker shell 1 when the circuit breaker is in the open state, and the pulling member notch 16 is opened, so that the pulling member operation part 20a can be pulled out of the pulling member operation hole 113 at the pulling member notch 16. When the outgoing line is removed, the pulling member can be pulled out only when the circuit breaker is in the open state, and the above structure ensures that only when the circuit breaker is in the open state, the unlocking mechanism can unlock the first locking member 1a and the limiting fit of the assembly position shell, so as to avoid the situation that the pulling member 2a is pulled when the circuit breaker is in the closed state, which causes the pulling member 2a to be damaged or the circuit breaker to be pulled out under the live condition, thereby ensuring the safety of the user in use.

[0118] Preferably, as shown in another embodiment of the pulling member, Figure 11B the pulling member 2a further comprises a pulling member spring limiting part 26a, which is arranged in parallel with the pulling member operation part 20a and is located at both ends of the pulling member 2a, respectively; and the unlocking mechanism further comprises a pulling member reset spring 7a arranged between the pulling member spring limiting part 26a and the pulling member limiting rib 6a. The pulling member reset spring 7a can reliably hold the pulling member holding part 20a of the pulling member 2a in the circuit breaker shell. The pulling member spring limiting part 26a is bent to be connected with the pulling member holding part 25a, or is directly bent to be connected with the pulling member driving part 24a.

[0119] Further, as shown in Figures 10-13As shown, the pulling member 2a is arranged in the thickness direction of the circuit breaker and stacked with the closing button 20 and the opening button 21 to save space. The moving direction of the pulling member 2a is parallel to the moving direction of the closing button 20 and the opening button 21 and perpendicular to the moving direction of the first locking member 1a which moves in the width direction of the circuit breaker. The first transition part 21a of the pulling member 2a moves against the side wall of the locking member opening 17 of the circuit breaker shell 1, is limited between the pulling member limiting rib 6a and the lever support 4a in the moving direction and is limited by the one end of the pulling member limiting rib 6a and the circuit breaker shell 1 in the direction perpendicular to the moving direction. The first transition part 21a and the first locking member 1a are arranged on both sides of the lever support 4a respectively, and the linkage member 3a is located between the first locking member 1a and the lever support 4a. The pulling member 2a, the linkage member 3a and the first locking member 1a are all arranged in the thickness direction of the circuit breaker and stacked above the closing button 20 and the opening button 21, and the first locking member limiting platform 14a of the first locking member 1a protrudes into the closing button avoiding slot 206 of the closing button 20.

[0120] Preferably, the linkage member 3a is a Z or U shaped pulling rod, one end of which is inserted into the first locking member 1a and the other end extends to the sliding position of the pulling member driving part 24a of the pulling member 2a. The linkage member 3a drives the first locking member 1a to retract into the circuit breaker shell 1 by taking the lever support 4a as the rotating support, and the installation structure is relatively simple. The lever support 4a simultaneously plays the role of limiting the first locking member 1a and supporting the linkage member 3a.

[0121] Preferably, as shown in the drawings, Figures 21-24 The locking mechanism further comprises a second locking member 1b.

[0122] As shown in the drawings, Figures 21-24 The second locking member 1b is pivotally arranged on the circuit breaker shell 1 and comprises a second locking end 13b. When the circuit breaker is closed, the closing button 20 or the opening button 21 drives the second locking member 1b to rotate (in the second direction) so that the second locking end 13b protrudes outside the circuit breaker shell 1. When the circuit breaker is opened, the opening button 21 or the closing button 20 drives the second locking member 1b to rotate (in the first direction) so that the second locking end 13b retracts into the circuit breaker shell 1.

[0123] Further, as shown in the drawings, Figures 22-24 The closing button 20 comprises a closing button driving part 207 which is driven by the second locking member 1b, and the opening button 21 comprises an opening button driving part 217 which is driven by the second locking member 1b, as shown in the drawings, Figure 24As shown, when the circuit breaker is closed, the second locking member 1b is rotated by the tripping button 21 through the tripping button driving part 217, so that the second locking end 13b protrudes outside the circuit breaker housing 1, and the second locking end 13b is prevented from retracting into the circuit breaker housing 1 by the tripping button driving part 217. Figure 22 As shown, when the circuit breaker is opened, the second locking member 1b is rotated by the closing button 20 through the closing button driving part 207, so that the second locking end 13b retracts into the circuit breaker housing 1, and the second locking end 13b is limited by the closing button driving part 207 to remain inside the circuit breaker housing 1. Specifically, as shown in the direction of the arrow, when the circuit breaker is closed, the tripping button 21 drives the second locking member 1b to rotate counterclockwise (in the second direction), so that the second locking end 13b protrudes outside the circuit breaker housing 1. Figure 24 As shown, when the circuit breaker is opened, the second locking member 1b is rotated by the closing button 20 through the closing button driving part 207, so that the second locking end 13b retracts into the circuit breaker housing 1, and the second locking end 13b is limited by the closing button driving part 207 to remain inside the circuit breaker housing 1. Specifically, as shown in the direction of the arrow, when the circuit breaker is closed, the tripping button 21 drives the second locking member 1b to rotate counterclockwise (in the second direction), so that the second locking end 13b protrudes outside the circuit breaker housing 1. Figure 22 As shown, when the circuit breaker is opened, the second locking member 1b is rotated by the closing button 20 through the closing button driving part 207, so that the second locking end 13b retracts into the circuit breaker housing 1, and the second locking end 13b is limited by the closing button driving part 207 to remain inside the circuit breaker housing 1. Specifically, as shown in the direction of the arrow, when the circuit breaker is closed, the tripping button 21 drives the second locking member 1b to rotate counterclockwise (in the second direction), so that the second locking end 13b protrudes outside the circuit breaker housing 1.

[0124] Preferably, as shown in the direction of the arrow, when the circuit breaker is closed, the tripping button 21 drives the second locking member 1b to rotate counterclockwise (in the second direction), so that the second locking end 13b protrudes outside the circuit breaker housing 1. Figures 22-24 As shown, the second locking member 1b includes a second locking member mounting part 10b pivotally connected to the circuit breaker housing 1, a first driven part 11b for driving cooperation with the tripping button 21, a second driven part 12b for driving cooperation with the closing button 20, and a second locking end 13b. When the circuit breaker is closed, the tripping button 21 drives the second locking member 1b to rotate through the first driven part 11b, so that the second locking end 13b protrudes outside the circuit breaker housing 1. When the circuit breaker is opened, the closing button 20 drives the second locking member 1b to rotate through the second driven part 12b, so that the second locking end 13b retracts into the circuit breaker housing 1. In this embodiment, the first driven part 11b and the second locking end 13b are two cooperating end parts. As another embodiment, the second locking end 13b and the second locking end 13b can also be the same cooperating end part. Figure 22 and 24As shown, the first locking part 11b includes a locking first driven protrusion 110b protruding to the side of the opening button 21, the second locking part 12b includes a locking second driven protrusion 120b protruding to the side of the closing button 20, the locking first driven protrusion 110b and the locking second driven protrusion 120b are located on the same side of the second locking part 1b, when the circuit breaker is closing, the side of the opening button driving part 217 drives the second locking part 1b to rotate through the locking first driven protrusion 110b, so that the second locking end 13b protrudes outside the circuit breaker housing 1; when the circuit breaker is opening, the side of the closing button driving part 207 drives the second locking part 1b to rotate through the locking second driven protrusion 120b, so that the second locking end 13b is retracted into the circuit breaker housing 1.

[0125] Further, as shown in the figure, Figures 22-24 The closing button driving part 207 includes a closing button driving slope 2070 matched with the locking second driven protrusion 120b, the opening button driving part 217 includes an opening button driving slope 21700 matched with the locking first driven protrusion 110b, the inclination directions of the closing button driving slope 2070 and the opening button driving slope 21700 are opposite, the locking first driven protrusion 110b and the locking second driven protrusion 120b are located between the opening button driving slope 21700 and the closing button driving slope 2070;

[0126] When the circuit breaker is closing by pressing the closing button 20, the closing button driving slope 2070 moves to avoid the second locking part 1b in the direction of the inside of the circuit breaker housing 1, at the same time, the opening button driving slope 21700 moves in the direction of the outside of the circuit breaker housing 1, the opening button driving slope 21700 drives the second locking part 1b to rotate through the locking first driven protrusion 110b, so that the second locking end 13b protrudes outside the circuit breaker housing 1, and the opening button driving slope 21700 stops the locking first driven protrusion 110b, so that the second locking part 1b cannot retract into the circuit breaker housing 1;

[0127] When the circuit breaker is opening by pressing the opening button 21, the opening button driving slope 21700 moves to avoid the second locking part 1b in the direction of the inside of the circuit breaker housing 1, at the same time, the closing button driving slope 2070 moves in the direction of the outside of the circuit breaker housing 1, the closing button driving slope 2070 drives the second locking end 13b to retract into the circuit breaker housing 1 through the locking second driven protrusion 120b, and the closing button driving slope 2070 limits the second locking part 1b to keep inside the circuit breaker housing 1. Further, as shown in the figure, Figure 22 and 23As shown, the closing button driving slope 2070 is formed by a closing button driving protrusion provided on the closing button 20, and the opening button driving slope 21700 is formed by an opening button driving groove provided on the opening button 21, and the closing button driving slope 2070 and the opening button driving slope 21700 form a funnel structure when the circuit breaker is in the open state.

[0128] Preferably, as shown in Figures 22-24 As shown, the opening button driving part 217 includes an opening button driving part first step 2170 provided on one side of the opening button 21 and an opening button driving part second step 2171 provided on the side of the opening button driving part first step 2170 away from the opening button 21, and the opening button driving part first step 2170 is in a triangular structure as a whole, and the opening button driving part second step 2171 is provided at one of the vertices of the triangular structure close to the closing button 20.

[0129] Further, as shown in Figure 22 and 24 As shown, the second locking member 11b is in a shape similar to a H-beam structure, the second locking member mounting part 10b and the locking member first driven part 11b are located at one end of the second locking member 1b, constituting one of the horizontal edges of the H-beam structure, and the locking member second driven part 12b and the second locking end 13b are located at the other end of the second locking member 1b, constituting the other horizontal edge of the H-beam structure.

[0130] Further, as shown in Figure 3 , 21 As shown, the second locking member 11b is stacked with the closing button 20 and the opening button 21 in the thickness direction of the circuit breaker to save space. In the thickness direction of the circuit breaker, the second locking member 11b is above the closing button 20 and the opening button 21, and the pulling member 2a is above the second locking member 11b; the first locking member 1a is above the second locking end 13b of the second locking member 11b, and one end of the first locking member 1a and the second locking end 13b share a large locking member opening 17, and of course, two independent locking member openings can also be used. In the moving direction of the closing button 20 and the opening button 21, the first locking member 1a is closer to the inside of the circuit breaker housing 1 than the second locking member 11b.

[0131] As shown in Figure 25 is an embodiment of the circuit breaker housing 1.

[0132] As shown in Figure 25As shown, the circuit breaker housing 1 is in a hexahedral structure as a whole, which comprises oppositely arranged front side wall 1001 and rear side wall 1002, outgoing line hole 112, button hole 110-111 and puller operating hole 113 arranged on the front side wall 1001, and incoming line hole 14 arranged on the rear side wall 1002.

[0133] Preferably, as shown in the drawings, Figure 25 As shown, the button hole 110-111 comprises side-by-side arranged closing button hole 110 and opening button hole 111. Further, the closing button operating end of the closing button 20 and the opening button operating end of the opening button 21 are respectively slidingly arranged in the closing button hole 110 and the opening button hole 111, and always do not protrude from the front side wall 1001 of the circuit breaker housing 1, so as to avoid the circuit breaker closing / opening caused by the user accidentally touching the closing button operating end / opening button operating end, and ensure the stability and safety of the user's electricity use.

[0134] Preferably, as shown in the drawings, Figure 25 As shown, the button hole 110-111 and the puller operating hole 113 are arranged at one end of the front side wall 1001, one outgoing line hole 112 is arranged at the other end of the front side wall 1001 as a first outgoing line hole, and the other outgoing line hole 112 is arranged between the first outgoing line hole and the button hole 110-111 as a second outgoing line hole; the button hole 110-111 and the second outgoing line hole are located on the same side of the puller operating hole 113. Further, as shown in the drawings, Figure 19 The circuit breaker housing 1 further comprises puller slot 16 arranged on the front side wall 1001, the puller slot 16 is arranged between the second outgoing line hole and the puller operating hole 113 and communicates with the second outgoing line hole and the puller operating hole 113 at both ends, and the outgoing line wire inserted in the second outgoing line hole blocks the puller slot 16; or, as shown in the drawings, Figure 20 The puller slot 16 is arranged between the opening button hole 111 and the puller operating hole 113, and the opening button 21 of the circuit breaker blocks the puller slot 16 when the circuit breaker is in the closing state.

[0135] Preferably, as shown in the drawings, Figure 25 The circuit breaker housing 1 further comprises dismounting hole 1120 arranged on the front side wall 1001 and communication hole 15 arranged on the rear side wall 1002, the dismounting hole 1120 is one-to-one matched with the outgoing line hole 112, and the communication hole 15 is located between the two incoming line holes 14.

[0136] Preferably, as shown in the drawings, Figure 25As shown, the circuit breaker housing 1 further comprises a third side wall 1003 and a fourth side wall 1004 arranged oppositely, and a fifth side wall 1005 and a sixth side wall 1006 arranged oppositely; the third side wall 1003, the fourth side wall 1004, the fifth side wall 1005 and the sixth side wall 1006 are all located between the front side wall 1001 and the rear side wall 1002. Further, as shown, Figure 25 As shown, one end of the third side wall 1003 close to the front side wall 1001 is provided with a locking member opening 17.

[0137] The above is a further detailed description of the present application in combination with specific preferred embodiments, and the specific implementation of the present application should not be limited to these descriptions. For those of ordinary skill in the art to which the present application belongs, without departing from the concept of the present application, a number of simple deductions or substitutions can be made, which should be considered as falling within the scope of protection of the present application.

Claims

1. A circuit breaker housing, which is integrally hexahedral in structure; characterized in that, It includes a front sidewall (1001) and a rear sidewall (1002) arranged opposite to each other, a wire outlet hole (112), a button hole (110-111) and a pull-out member operation hole (113) provided on the front sidewall (1001), and a wire inlet hole (14) provided on the rear sidewall (1002); the circuit breaker housing also includes a pull-out member slot (16) provided on the front sidewall (1001); The puller slot (16) is located between the wire outlet hole (112) and the puller operation hole (113) and its two ends are respectively connected to the wire outlet hole (112) and the puller operation hole (113). The wire outlet inserted in the wire outlet hole (112) blocks the puller slot (16). Alternatively, the button holes (110-111) include a closing button hole (110) and a tripping button hole (111) arranged side by side; the pull-out member slot (16) is arranged between the tripping button hole (111) and the pull-out member operation hole (113). When the circuit breaker is in the closed state, the circuit breaker's tripping button (21) blocks the pull-out member slot (16).

2. The circuit breaker housing according to claim 1, characterized in that: The button hole (110-111) and the puller operation hole (113) are located at one end of the front sidewall (1001), and a wire outlet hole (112) is located at the other end of the front sidewall (1001), which is the first wire outlet hole. Another wire outlet hole (112) is located between the first wire outlet hole and the button hole (110-111), which is the second wire outlet hole. The button hole (110-111) and the second wire outlet hole are located on the same side of the puller operation hole (113).

3. The circuit breaker housing according to claim 1, characterized in that: It also includes a wire removal hole (1120) on the front side wall (1001) and a communication hole (15) on the rear side wall (1002). The wire removal hole (1120) and the wire outlet hole (112) are matched one-to-one, and the communication hole (15) is located between the two wire inlets (14).

4. The circuit breaker housing according to claim 1, characterized in that: It also includes a third sidewall (1003) and a fourth sidewall (1004) arranged opposite to each other, and a fifth sidewall (1005) and a sixth sidewall (1006) arranged opposite to each other; the third sidewall (1003), the fourth sidewall (1004), the fifth sidewall (1005) and the sixth sidewall (1006) are all located between the front sidewall (1001) and the rear sidewall (1002); the third sidewall (1003) has a locking opening (17) for cooperating with the locking mechanism of the circuit breaker at one end near the front sidewall (1001).

5. A plug-in circuit breaker, characterized in that, It includes the circuit breaker housing (1) as described in any one of claims 1-4.

6. The plug-in circuit breaker according to claim 5, characterized in that: The plug-in circuit breaker also includes a button mechanism (2) disposed in the circuit breaker housing (1), an operating mechanism connected to the button mechanism (2), and a locking mechanism cooperating with the button mechanism (2); The button mechanism (2) includes a closing button (20) and a tripping button (21) that are respectively slidably disposed inside the circuit breaker housing (1). Pressing the closing button (20) can drive the operating mechanism to close the circuit breaker, and at the same time move the tripping button (21) to the outside of the circuit breaker housing (1); pressing the tripping button (21) can drive the operating mechanism to trip the circuit breaker, and at the same time move the closing button (20) to the outside of the circuit breaker housing (1). The locking mechanism includes a first locking member (1a) with one end protruding from the outside of the circuit breaker housing (1) through a locking member opening (17); when the circuit breaker is in the open state, one end of the first locking member (1a) protrudes from the locking member opening (17) outside the circuit breaker housing (1), and the first locking member (1a) can be retracted into the circuit breaker housing (1) by a retraction force, and after the first locking member (1a) is retracted, it cooperates with the closing button (20) and / or the opening button (21) to lock the closing button (20) and / or the opening button (21) so that the circuit breaker cannot be closed; When the circuit breaker is in the closed state, the first locking member (1a) protrudes outside the circuit breaker housing (1) and is limited by the closing button (20) and / or the opening button (21) and cannot be retracted into the circuit breaker housing (1).

7. The plug-in circuit breaker according to claim 6, characterized in that: It also includes an unlocking mechanism that is driven and connected to the first locking member (1a). The unlocking mechanism includes an independent pull member (2a) that is driven and cooperates with the first locking member (1a). When the circuit breaker is in the open state, one end of the first locking member (1a) extends out of the circuit breaker housing (1) from the locking member opening (17). Pulling the pull member (2a) can drive the first locking member (1a) to retract into the circuit breaker housing (1). The pull member operation part (20a) of the pull member (2a) is provided in the pull member operation hole (113). The closing button (20) and the opening button (21) are slidably disposed in the closing button hole (110) and the opening button hole (111) respectively, and neither of them protrudes from the front side wall (1001) of the circuit breaker housing (1).

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