Locking mechanisms, fixing mechanisms, mounting assemblies and circuit breakers

Abstract

The present invention provides a locking mechanism, a fixing mechanism, an installation assembly and a circuit breaker. Each of the connecting member comprises a first arm and a second arm connected to each other, a rotating connection portion is provided between the first arm and the second arm, a first boss is formed on the first arm, an elastic arm is integrally extended on the first arm, the extension direction of the elastic arm is away from the first boss, a second boss is formed on the second arm, and the direction of the second boss is the same as the extension direction of the elastic arm. The connecting member provided by this scheme can be applied to both the locking mechanism for locking or unlocking a button and the fixing mechanism for fixing and unlocking a plug-in circuit breaker, thereby simplifying the structure, greatly reducing the difficulty of assembly, and occupying a small space, which can leave more space for arranging other components, making the distribution between components more reasonable, and suitable for miniaturized circuit breakers.

Description

Technical Field

[0001] The invention relates to the field of circuit breakers, and in particular to a locking mechanism, a fixing mechanism, a mounting assembly and a circuit breaker. Background Art

[0002] Circuit breakers are divided into three types according to the installation method: plug-in type, fixed type and drawer type. The use of plug-in circuit breakers can effectively improve the safety of the electrical equipment industry. With the widespread use of plug-in circuit breakers in various electrical equipment, in order to meet the installation needs of various different electrical equipment, the structure of plug-in circuit breakers has also developed into various types. At present, the layout of the existing traditional plug-in circuit breaker products at the installation position generally adopts the method of pressing the operation button to close the circuit breaker. After the operating force is removed, the operation button of the circuit breaker rebounds to its original position, and the circuit breaker is disconnected when the button is pressed again.

[0003] For plug-in circuit breakers, whether the circuit breaker is properly assembled and whether the installation is stable all affect the safety of the circuit breaker. The Chinese invention patent with application number 201711022046.3 discloses a locking mechanism for a circuit breaker operating device, in which a locking mechanism is provided in a housing, and the locking mechanism can lock or unlock the button; that is, when the circuit breaker is not inserted in place, the locking mechanism always locks the button so that it cannot be pressed and operated. When the circuit breaker is inserted in place, the locking mechanism unlocks the button and the button can be pressed normally. At the same time, the Chinese invention patent with application number 201711022048.2 discloses a fixing and unlocking mechanism for a plug-in circuit breaker, in which a locking mechanism is provided in a housing so that the plug-in circuit breaker cannot be pulled out of the installation cabinet, and an unlocking mechanism is also provided in the housing so that the locking mechanism can be unlocked so that the plug-in circuit breaker can be pulled out of the installation cabinet.

[0004] Although the above discloses a locking mechanism for locking or unlocking a button and a fixing and unlocking mechanism for fixing and unlocking a plug-in circuit breaker, the structures are relatively complicated, requiring at least a locking component and a torsion spring for applying elastic force, occupying a large space, having a wide variety of parts, and being difficult to assemble. Summary of the invention

[0005] To this end, the technical solution provided by the present invention can be applied to both a locking mechanism for locking or unlocking a button and a fixing mechanism for fixing and unlocking a plug-in circuit breaker (the fixing mechanism corresponds to the fixing and unlocking mechanism in the application number 201711022048.2) through the same component structure, thereby simplifying the structure, greatly reducing the difficulty of assembly, and occupying a small space, which is suitable for miniaturized circuit breakers.

[0006] To achieve the above purpose, the technical solution provided by the present invention is as follows:

[0007] A connecting piece includes a first arm and a second arm connected to each other, a rotating connecting part is provided between the first arm and the second arm, a first boss is formed on the first arm, an elastic arm is integrally extended from the first arm, the extension direction of the elastic arm is away from the first boss, a second boss is formed on the second arm, and the direction of the second boss is the same as the extension direction of the elastic arm.

[0008] A locking mechanism for a circuit breaker comprises a circuit breaker housing, a button and a locking piece, wherein a button insertion opening is provided on the circuit breaker housing, the button is retractably and movably inserted into the circuit breaker housing through the button insertion opening, the locking piece is the above-mentioned connecting piece, the locking piece is hinged in the circuit breaker housing through a rotating connecting portion, a clearance hole corresponding to a second boss of the locking piece is provided on the circuit breaker housing, the elastic support arm abuts against the inner wall of the circuit breaker housing and applies an elastic force to the first boss of the locking piece to touch the button, and the second boss of the locking piece is extended out of the circuit breaker housing through the clearance hole; the first boss of the locking piece is defined as a front end at the end facing the button insertion opening, and a limiting step corresponding to the front end of the first boss of the locking piece is provided on the button.

[0009] When the circuit breaker is not fully assembled, the first boss of the locking member always contacts the button under the action of the elastic arm. When the button is pressed, the limiting step on it is pressed by the first boss of the locking member and cannot be pressed normally, thereby ensuring safety. When the circuit breaker is fully assembled, the second boss of the locking member will be pressed down by the cabinet plate. The downward pressure of the second boss of the locking member drives the first boss of the locking member to overcome the elastic force of the elastic arm and detach from the button. The limiting step on the button loses the pressure of the first boss of the locking member and can achieve normal pressing operation.

[0010] Furthermore, the rotating connection portion of the locking member is an axial hole, a hinge shaft is provided in the circuit breaker housing, and the axial hole of the locking member is sleeved on the hinge shaft, thereby realizing the hinged setting of the locking member.

[0011] Furthermore, the second boss of the locking member has an insertion surface facing the cabinet when the circuit breaker is inserted, and the insertion surface is an inclined surface.

[0012] A fixing mechanism for a circuit breaker comprises a circuit breaker housing, a button and a fixing piece, wherein a button insertion opening is provided on the circuit breaker housing, and the button is inserted into the circuit breaker housing in a telescopic manner through the button insertion opening, and the fixing piece is the above-mentioned connecting piece, and the fixing piece is hinged in the circuit breaker housing through a rotating connecting part, and a clearance hole corresponding to a second boss of the fixing piece is provided on the circuit breaker housing, and the elastic support arm abuts against the inner wall of the circuit breaker housing to apply an elastic force to the first boss of the fixing piece to touch the button, and the second boss of the fixing piece is extended out of the circuit breaker housing through the clearance hole; the first boss of the fixing piece is defined as the rear end at the end away from the button insertion opening, and a limiting step corresponding to the rear end of the first boss of the fixing piece is provided on the button.

[0013] When the circuit breaker is installed into the cabinet, the second boss of the fixing piece will be pressed down by the cabinet, so that the circuit breaker can be installed smoothly. After the installation is completed, the cabinet has a through hole corresponding to the second boss of the fixing piece. The second boss of the fixing piece loses the pressure of the cabinet and pops out again and is inserted into the through hole on the cabinet to complete the assembly. At this time, the circuit breaker cannot be pulled out normally. When the circuit breaker needs to be pulled out, the button is pulled outward so that the limiting step on the button contacts the rear end of the first boss of the fixing piece. At this time, the button is continued to be pulled. The movement of the limiting step can push the first boss of the fixing piece outward, so that the fixing piece overcomes the elastic force of the elastic support arm and swings, thereby causing the second boss of the fixing piece to retract a distance and disengage from the through hole on the cabinet. The circuit breaker is unlocked from the cabinet, and the circuit breaker can be easily pulled out of the cabinet.

[0014] Furthermore, the rotating connection portion of the fixing member is an axial hole, a hinge shaft is provided in the circuit breaker housing, and the axial hole of the fixing member is sleeved on the hinge shaft, thereby realizing the hinged setting of the fixing member.

[0015] Furthermore, the second boss of the fixing member has an insertion surface facing the cabinet when the circuit breaker is inserted, and the insertion surface is an inclined surface.

[0016] A circuit breaker mounting assembly, comprising a circuit breaker housing, a button, a locking piece and a fixing piece, wherein the circuit breaker housing is provided with a button insertion opening, the button is inserted into the circuit breaker housing in a telescopic manner through the button insertion opening, the locking piece and the fixing piece are both the above-mentioned connecting pieces, and the locking piece and the fixing piece are both hinged in the circuit breaker housing through a rotating connecting part; the circuit breaker housing is provided with a first clearance hole corresponding to a second boss of the locking piece and a second clearance hole corresponding to a second boss of the fixing piece; the elastic arm of the locking piece contacts the inner wall of the circuit breaker housing to secure the first clearance hole of the locking piece The boss exerts an elastic force against the button, and the second boss of the locking member extends out of the circuit breaker housing through the first clearance hole; the elastic arm of the fixing member contacts the inner wall of the circuit breaker housing to exert an elastic force against the button on the first boss of the fixing member, and the second boss of the fixing member extends out of the circuit breaker housing through the second clearance hole; the first boss is defined as the front end facing the button insertion port, and the rear end away from the button insertion port; the button is provided with a first limiting step corresponding to the front end of the first boss of the locking member and a second limiting step corresponding to the rear end of the first boss of the fixing member.

[0017] Furthermore, the rotating connection part of the locking member and the rotating connection part of the fixing member are both axial holes, a hinge shaft is provided in the circuit breaker housing, the axial hole of the locking member and the axial hole of the fixing member are both sleeved on the hinge shaft, and the first arms of the locking member and the fixing member overlap on the vertical projection plane in the axial direction of the hinge shaft.

[0018] Furthermore, the second boss of the locking member and the second boss of the fixing member both have an insertion surface facing the cabinet when the circuit breaker is inserted, and the insertion surface is an inclined surface.

[0019] Furthermore, the button is provided with a connecting protruding ring for linkage connection with the moving contact of the circuit breaker, and the connecting protruding ring protrudes from the outer surface of the button and serves as the second limiting step.

[0020] Furthermore, the connecting protruding ring also extends to a position corresponding to the rear end of the first boss of the locking member, and the first boss of the locking member is limited by the first limiting step and the connecting protruding ring.

[0021] A circuit breaker comprises at least the locking mechanism of the circuit breaker described above, or the fixing mechanism of the circuit breaker described above, or the mounting assembly of the circuit breaker described above.

[0022] The technical solution provided by the present invention has the following beneficial effects:

[0023] It is also applicable to a locking mechanism for locking or unlocking a button and a fixing mechanism for fixing and unlocking a plug-in circuit breaker, thereby simplifying the structure, greatly reducing the difficulty of assembly, and occupying a small space, leaving more space for arranging other components, making the distribution between components more reasonable, and being suitable for miniaturized circuit breakers. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Shown is a schematic diagram of the three-dimensional structure of the connecting member in the first embodiment;

[0025] Figure 2 Shown is a schematic diagram of the three-dimensional structure of another connecting member in the first embodiment;

[0026] Figure 3 The figure shows the assembly diagram of the button and the locking member in the locking mechanism of the circuit breaker in the second embodiment;

[0027] Figure 4 The figure is a schematic diagram of the structure of the locking mechanism of the circuit breaker in the second embodiment;

[0028] Figure 5 The figure shows a schematic structural diagram of the locking mechanism of the circuit breaker after the circuit breaker is assembled in the second embodiment;

[0029] Figure 6 The figure shows the assembly diagram of the button and the fixing member in the fixing mechanism of the circuit breaker in the third embodiment;

[0030] Figure 7 The figure shows a schematic structural diagram of the fixing mechanism of the circuit breaker after the circuit breaker is assembled in the third embodiment;

[0031] Figure 8 The figure is a schematic diagram of the structure of the fixing mechanism of the circuit breaker in the third embodiment when it is separated from the cabinet;

[0032] Fig. 9 The figure is a three-dimensional schematic diagram of the assembly of the locking member, the fixing member and the button in the installation assembly of the circuit breaker in the fourth embodiment;

[0033] Fig.10 Shown Fig. 9 Schematic diagram of structural decomposition in;

[0034] Fig.11 The figure is a schematic diagram of the structure of the installation assembly of the circuit breaker in the fourth embodiment;

[0035] Fig.12 Shown is a schematic diagram of the appearance of a circuit breaker having a mounting assembly for the circuit breaker in the fourth embodiment;

[0036] Fig.13 Shown is a schematic diagram of a circuit breaker with a mounting assembly for the circuit breaker in the fourth embodiment being assembled in a cabinet. DETAILED DESCRIPTION

[0037] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0038] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods.

[0039] Embodiment 1

[0040] Reference Figure 1 As shown, a connecting member 10 provided in this embodiment includes a first arm 11 and a second arm 12 connected to each other. A rotating connection portion is provided between the first arm 11 and the second arm 12. In this specific embodiment, the rotating connection portion is an axis hole 13. In other embodiments, it is not limited to this. The rotating connection portion can also be a hinge axis, etc. A first boss 111 is formed on the first arm 11. An elastic arm 14 is integrally extended from the first arm 11. The extension direction of the elastic arm 14 is away from the first boss 111, for example Figure 1 In the embodiment, the first boss 111 extends to the left, while the elastic arm 14 extends to the right. The second arm 12 is formed with a second boss 121, and the direction of the second boss 121 is the same as the extension direction of the elastic arm. Figure 1 The middle also extends to the right.

[0041] Specifically, in this embodiment, the material of the connecting member 10 is a plastic part, which can be integrally formed by injection molding, and is easy to manufacture. Of course, in other embodiments, the material of the connecting member 10 may not be limited to this.

[0042] Specifically, Figure 2 Also shown is a connecting member 10, Figure 1 , Figure 2 In the connector 10 shown, the structures and connection relationships of the components are the same, except that: Figure 1 , Figure 2 The included angles of the first arm 11 and the second arm 12 of the connecting member 10 are different, and at the same time, Figure 1 The length of the second arm 12 of the connecting member 10 is shorter than Figure 2 The length of the second arm 12 of the connecting member 10 in FIG.

[0043] Embodiment 2

[0044] Reference Figure 3 , Figure 4 As shown, this embodiment provides a locking mechanism for a circuit breaker, including a circuit breaker housing 300, a button 100 and a locking member 20. The circuit breaker housing 300 is provided with a button insertion port (not shown), and the button 100 is retractably and movably inserted into the circuit breaker housing 300 through the button insertion port. The locking member 20 is the connecting member 10 described in the first embodiment, and specifically adopts the connecting member 10 described in the first embodiment. Figure 1 The connecting member 10 shown in the figure, namely the first arm 21, the second arm 22, the first boss 211, the second boss 221, the shaft hole 23 and the elastic arm 24 of the locking member 20 are respectively Figure 1 The first arm 11, the second arm 12, the first boss 111, the second boss 121, the shaft hole 13 and the elastic arm 14 of the connecting member 10 are provided; but not limited thereto. The locking member 20 is hinged in the circuit breaker housing 300 through the shaft hole 23. Specifically, a hinge shaft 3001 is provided in the circuit breaker housing 300, and the shaft hole 23 of the locking member 20 is sleeved on the hinge shaft 3001, thereby realizing the hinged setting of the locking member 20.

[0045] The circuit breaker housing 300 is provided with a clearance hole 3002 corresponding to the second boss 221 of the locking member 20. The elastic arm 24 abuts against the inner wall of the circuit breaker housing 300 to exert an elastic force on the first boss 211 of the locking member 20 to contact the button 100, and the second boss 221 of the locking member 20 extends out of the circuit breaker housing 300 through the clearance hole 3002. Figure 4 shown.

[0046] The first protrusion 211 of the locking member 20 is defined as the front end facing the button insertion port, and the button 100 is provided with a limiting step 1001 corresponding to the front end of the first protrusion 211 of the locking member 20. Specifically, as Figure 4 In the embodiment, the insertion opening of the button 100 is located above the first boss 211 of the locking member 200, and the front end of the first boss 211 is Figure 4 The button 100 is provided with a limiting step 1001 above the first boss 211 of the locking member 20 , that is, the limiting step 1001 is located above the first boss 211 .

[0047] When the circuit breaker is not assembled in place, the first boss 211 of the locking member 20 always contacts the button 100 under the action of the elastic arm 24. Figure 4 In the state shown, when the button 100 is pressed, the limiting step 1001 on it is resisted by the first boss 211 of the locking member 20 and cannot be pressed normally, thus ensuring safety. Figure 5In the state shown in FIG. 1 , the second boss 221 of the locking member 20 is pressed down by the cabinet 1 , and the pressing down of the second boss 221 of the locking member 20 causes the locking member 20 to swing at the hinge point, as shown in FIG. Figure 5 In order to overcome the elastic force of the elastic support arm, the locking member 20 swings clockwise, and the clockwise swing of the locking member 20 drives the first boss 211 to disengage from the button 100. The limiting step 1001 on the button 100 loses the pressing restriction of the first boss 211 of the locking member 20 and the normal pressing operation of the button 100 can be achieved.

[0048] The button 100 is locked or unlocked by an integrally connected connector 10, which simplifies the structure, greatly reduces the difficulty of assembly, occupies a small space, and can leave more space for arranging other components, making the distribution between components more reasonable, which is suitable for miniaturized circuit breakers.

[0049] Specifically, in this embodiment, the elastic arm 24 of the locking member 20 is arranged at an end angle position of the circuit breaker housing 300, such as Figure 4 As shown, the space inside the circuit breaker housing 300 is fully utilized, and more space can be left for arranging other components, making the structure more compact and reasonable.

[0050] Specifically, in this embodiment, the hinged arrangement of the locking member 20 is realized by the sleeve arrangement of the shaft hole 23 thereon and the hinge shaft 3001 in the circuit breaker housing 300. Of course, in other embodiments, the shaft hole 23 of the locking member 20 can also be replaced by a hinged rotating connection part such as a hinge shaft that can realize hinged arrangement.

[0051] Furthermore, in this embodiment, the second boss 221 of the locking member 20 has an insertion surface 222 facing the cabinet 1 when the circuit breaker is inserted, and the insertion surface 222 is an inclined surface. When in contact with the cabinet 1, the insertion surface 222 forms a guide structure, which enables the second boss 22 of the locking member 20 to retract more smoothly without causing jamming.

[0052] This embodiment also provides a circuit breaker, comprising the locking mechanism of the circuit breaker described above.

[0053] Embodiment 3

[0054] Reference Figures 6 to 8 As shown, this embodiment provides a fixing mechanism for a circuit breaker, including a circuit breaker housing 300, a button 100 and a fixing member 30. The circuit breaker housing 300 is provided with a button insertion port (not shown). The button 100 is inserted into the circuit breaker housing 300 in a telescopic manner through the button insertion port. The fixing member 30 is the connecting member 10 described in the first embodiment, specifically the connecting member 10 described in the first embodiment. Figure 2The connecting member 10 shown in the figure, that is, the first arm 31, the second arm 32, the first boss 311, the second boss 321, the shaft hole 33 and the elastic arm 34 of the fixing member 30 are respectively Figure 2 The first arm 11, the second arm 12, the first boss 111, the second boss 121, the shaft hole 13 and the elastic arm 14 of the connecting member 10; but not limited thereto.

[0055] The fixing member 30 is hinged in the circuit breaker housing 300 through the shaft hole 33 . Specifically, a hinge shaft 3001 is provided in the circuit breaker housing 300 , and the shaft hole 33 of the fixing member 30 is sleeved on the hinge shaft 3001 , thereby realizing the hinged setting of the fixing member 30 .

[0056] The circuit breaker housing 300 is provided with a clearance hole 3003 corresponding to the second boss 321 of the fixing member 30. The elastic arm 34 abuts against the inner wall of the circuit breaker housing 300 to exert an elastic force on the first boss of the fixing member 30 to contact the button, and the second boss 321 of the fixing member 30 extends out of the circuit breaker housing 300 through the clearance hole 3003. Figure 7 shown.

[0057] The end of the first boss 311 of the fixing member 30 away from the button insertion port is defined as the rear end, and the button 100 is provided with a limiting step 1002 corresponding to the rear end of the first boss 311 of the fixing member 30. Specifically, as Figure 7 As shown, the button insertion port is located above the first boss 311, and the rear end of the first boss 311 is Figure 7 The button 100 is provided with a limiting step 1002 below the first boss 311 of the fixing member 30 , that is, the limiting step 1002 is located below the first boss 311 .

[0058] When the circuit breaker is installed into the cabinet 1, the second boss 321 of the fixing member 30 will be pressed down by the cabinet 1, so that the circuit breaker can be installed smoothly. After the installation is completed, the cabinet 1 has a through hole 2 corresponding to the second boss 321 of the fixing member 30. The second boss 321 of the fixing member 30 loses the pressure of the cabinet 1 and pops out again and is stuck in the through hole 2 on the cabinet 1 to complete the assembly. At this time, the circuit breaker cannot be pulled out normally; when the circuit breaker needs to be pulled out, the button 100 is pulled outward so that the limiting step 1002 on the button 100 contacts the rear end of the first boss 311 of the fixing member 30. At this time, the button 100 is continued to be pulled. The movement of the limiting step 1002 can push the first boss 311 of the fixing member 30 outward, so that the fixing member 30 overcomes the elastic force of the elastic support arm 34 and swings. Figure 8 As shown in Figure 7The circuit breaker is then swung clockwise on the basis of the rotation of the switch 30 , thereby causing the second boss 321 of the fixing member 30 to retract a certain distance and disengage from the through hole 2 on the cabinet 1 . The circuit breaker is unlocked from the cabinet 1 , and the circuit breaker can be easily pulled out of the cabinet 1 .

[0059] The circuit breaker is fixed and unlocked by an integrally connected connector 10, which simplifies the structure, greatly reduces the difficulty of assembly, occupies a small space, and can leave more space for arranging other components, making the distribution between components more reasonable, which is suitable for miniaturized circuit breakers.

[0060] Specifically, in this embodiment, the elastic arm 34 of the fixing member 30 is arranged at the end corner position of the circuit breaker housing 300, so that the space inside the circuit breaker housing 300 is fully utilized, and more space can be freed up for arranging other components, making the structure more compact and reasonable.

[0061] Specifically, in this embodiment, the hinged arrangement of the fixing member 30 is realized by the sleeve arrangement of the shaft hole 33 thereon and the hinge shaft 3001 in the circuit breaker housing 300. Of course, in other embodiments, the shaft hole 33 of the fixing member 30 can also be replaced by a hinge shaft or other rotating connection part capable of realizing hinged arrangement.

[0062] Furthermore, in this embodiment, the second boss 321 of the fixing member 30 has an insertion surface 322 facing the cabinet 1 when the circuit breaker is inserted, and the insertion surface 322 is an inclined surface. When in contact with the cabinet, the insertion surface 322 forms a guide structure, which enables the second boss 321 of the fixing member 30 to retract more smoothly without causing jamming.

[0063] This embodiment also provides a circuit breaker, including the fixing mechanism of the circuit breaker described above.

[0064] Embodiment 4

[0065] Reference Figures 9 to 12 As shown, this embodiment provides a circuit breaker installation assembly, including a circuit breaker housing 300, a button 100, a locking member 20 and a fixing member 30. The circuit breaker housing 300 is provided with a button insertion port (not shown), and the button 100 is retractably and movably inserted into the circuit breaker housing 300 through the button insertion port. The locking member 20 and the fixing member 30 are both the connecting member 10 described in the first embodiment. Specifically, the locking member 20 adopts the connecting member 10 described in the first embodiment. Figure 1 The connecting member 10 shown in the figure, namely the first arm 21, the second arm 22, the first boss 211, the second boss 221, the shaft hole 23 and the elastic arm 24 of the locking member 20 are respectively Figure 1The first arm 11, the second arm 12, the first boss 111, the second boss 121, the shaft hole 13 and the elastic arm 14 of the connecting member 10; the fixing member 30 adopts the embodiment of the first embodiment Figure 2 The connecting member 10 shown in the figure, that is, the first arm 31, the second arm 32, the first boss 311, the second boss 321, the shaft hole 33 and the elastic arm 34 of the fixing member 30 are respectively Figure 2 The first arm 11, the second arm 12, the first boss 111, the second boss 121, the shaft hole 13 and the elastic arm 14 of the connecting member 10; but not limited thereto.

[0066] The locking member 20 and the fixing member 30 are both hinged in the circuit breaker housing through the axial hole; specifically, a hinge shaft 3001 is provided in the circuit breaker housing 300, and the axial hole 23 of the locking member 20 and the axial hole 33 of the fixing member 30 are both sleeved on the hinge shaft 3001, thereby realizing the hinged setting of the locking member 20 and the fixing member 30.

[0067] The circuit breaker housing 300 is provided with a first paving hole 3002 corresponding to the second boss 221 of the locking member 20 and a second paving hole 3003 corresponding to the second boss 321 of the fixing member 30 .

[0068] The elastic arm 24 of the locking member 20 abuts against the inner wall of the circuit breaker housing 300 to exert an elastic force on the first boss 211 of the locking member 20 to contact the button 100, and the second boss 221 of the locking member 20 extends out of the circuit breaker housing 300 through the first clearance hole 3002.

[0069] Similarly, the elastic arm 34 of the fixing member 30 abuts against the inner wall of the circuit breaker housing 300 to exert an elastic force on the first boss 311 of the fixing member 30 to contact the button 100, and the second boss 321 of the fixing member 30 extends out of the circuit breaker housing 300 through the second clearance hole 3003.

[0070] The first protrusion is defined as the front end at the end facing the button insertion port, and the rear end away from the button insertion port; the button 100 is provided with a first limiting step 1001 corresponding to the front end of the first protrusion 211 of the locking member 20 and a second limiting step 1002 corresponding to the rear end of the first protrusion 311 of the fixing member 30. Specifically, as Fig.11As shown, the first boss 211 of the locking member 20 and the first boss 311 of the fixing member 30 are almost overlapped, so the orientation is the same, and the button insertion opening is located above the first boss 211 of the locking member 20 and the first boss 311 of the fixing member 30. Therefore, the front end of the first boss 211 of the locking member 20 and the first boss 311 of the fixing member 30 is the upper end surface, and the rear end is the lower end surface. The first limiting step 1001 is located above the first boss 211 of the locking member 20, and the second limiting step 1002 is located below the first boss 311 of the fixing member 30.

[0071] like Fig.13 3 is a schematic diagram of the process of being installed into the cabinet. When the circuit breaker is installed into the cabinet, the second boss 321 of the fixing member 30 will be pressed down by the cabinet 1, so that the circuit breaker can be installed smoothly. In this process, because the second boss 221 of the locking member 20 is located behind the second boss 321 of the fixing member 30, it will not be pressed down. The first boss 221 of the locking member 20 is always in contact with the button 100 under the action of the elastic support arm 24. When the button 100 is pressed, the first limiting step 1001 thereon is resisted by the first boss 211 of the locking member 20 and cannot be pressed normally, thereby ensuring safety.

[0072] When the circuit breaker is assembled in place, the second boss 221 of the locking piece 20 will be pressed down by the cabinet 1. The downward pressure of the second boss 221 of the locking piece 20 drives the first boss 211 of the locking piece 20 to overcome the elastic force of the elastic arm 24 and disengage from the button 100. The first limiting step 1001 on the button 100 loses the pressure of the first boss 211 of the locking piece 20 and can achieve a normal pressing operation.

[0073] At the same time, the cabinet 1 has a through hole 2 corresponding to the second boss 321 of the fixing member 30. The second boss 321 of the fixing member 30 loses the pressure of the cabinet 1 and pops out again and is stuck in the through hole 2 on the cabinet 1 to complete the assembly. At this time, the circuit breaker cannot be pulled out normally; when the circuit breaker needs to be pulled out, the button 100 is pulled outward so that the second limiting step 1002 on the button 100 abuts against the rear end of the first boss 311 of the fixing member 30. At this time, the button 100 is continued to be pulled. The movement of the second limiting step 1002 can push the first boss 311 of the fixing member 30 outward, so that the fixing member 30 overcomes the elastic force of the elastic support arm 34 and swings, thereby causing the second boss 321 of the fixing member 30 to retract a distance and disengage from the through hole 2 on the cabinet 1. The circuit breaker is unlocked from the cabinet 1, and the circuit breaker can be easily pulled out of the cabinet 1.

[0074] Specifically, in this embodiment, the axial hole 23 of the locking member 20 and the axial hole 33 of the fixing member 30 are both sleeved on the same hinge shaft 3001, thereby realizing a coaxial hinged arrangement, and the locking member 20 and the fixing member 30 can be arranged side by side, saving layout space. At the same time, the first arm 21 of the locking member 20 and the first arm 31 of the fixing member 30 are basically overlapped on the vertical projection plane (i.e., the vertical projection plane in the axial direction of the hinge shaft 3001), that is, the elastic arm 24 of the locking member 20 and the elastic arm 34 of the fixing member 30 are simultaneously against a plane inner wall of the circuit breaker housing 300, and the first boss 211 of the locking member 20 and the first boss 311 of the fixing member 30 are simultaneously against a plane side wall of the button 100, without the need to set up different matching structures for matching respectively.

[0075] More specifically, in order to prevent the second boss 221 of the locking member 20 and the second boss 321 of the fixing member 30 from interfering with each other, in this embodiment, the distance between the second boss of the locking member and the second boss of the fixing member is lengthened. The specific implementation method is that the locking member 20 and the fixing member 30 are respectively Figure 1 and Figure 2 The connecting member 10 shown in the figure makes the angle between the first arm 21 and the second arm 22 of the locking member 20 smaller than the angle between the first arm 31 and the second arm 32 of the fixing member 30. When the first arm 21 of the locking member 20 and the first arm 31 of the fixing member 30 are substantially overlapped, the second arm 22 of the locking member 20 and the second arm 32 of the fixing member 30 are offset on the vertical projection plane in the axial direction of the hinge shaft 3001, thereby achieving the distance between the second boss 221 of the locking member 20 and the second boss 321 of the fixing member 30 being lengthened. Of course, since the locking member 20 and the fixing member 30 are arranged side by side, the second boss 221 of the locking member 20 and the second boss 321 of the fixing member 30 are also offset by a certain distance. In other embodiments, the second arm 22 of the locking member 20 and the second arm 32 of the fixing member 30 may also overlap on the vertical projection plane in the axial direction of the hinge shaft 3001.

[0076] Specifically, in this embodiment, the elastic arm 34 of the fixing member 30 and the elastic arm 24 of the locking member 20 are both arranged at the end angle position of the circuit breaker housing 300, so that the space inside the circuit breaker housing 300 is fully utilized, and more space can be freed up for the layout of other components, making the structure more compact and reasonable.

[0077] Specifically, in this embodiment, the hinged arrangement of the fixing member 30 and the locking member 20 is realized by the sleeve arrangement of the shaft hole thereon and the hinge shaft 3001 in the circuit breaker housing 300. Of course, in other embodiments, the shaft hole 23 of the locking member 20 or the shaft hole 33 of the fixing member 30 can also be replaced by a hinge shaft or other rotating connection parts that can realize hinged arrangement. If the rotating connection part of the fixing member is a hinge shaft, and the rotating connection part of the locking member is a shaft hole, during assembly, the shaft hole of the locking member can be sleeved on the hinge shaft of the fixing member first, and then the hinge shaft of the fixing member can be rotatably assembled in the circuit breaker housing, so that the fixing member and the locking member can be arranged side by side; or, the fixing member and the locking member can be arranged separately, that is, not arranged side by side, etc.

[0078] Furthermore, in this embodiment, the second boss 221 of the locking member 20 and the second boss 321 of the fixing member 30 both have an insertion surface facing the cabinet 1 when the circuit breaker is inserted, that is, the insertion surface 222 of the locking member 20 and the insertion surface 322 of the fixing member 30. The insertion surfaces 222 and 322 are both inclined surfaces. When in contact with the cabinet 1, the insertion surfaces 222 and 322 form a guiding structure, which can make the second boss 221 of the locking member 20 and the second boss 321 of the fixing member 30 retract more smoothly without causing jamming.

[0079] Furthermore, in this embodiment, the button 100 is provided with a connecting protruding ring for linkage connection with the moving contact of the circuit breaker, and the connecting protruding ring protrudes from the outer surface of the button 100 and serves as the second limiting step 1002. During assembly, a U-shaped rod as a linkage component can be inserted into the through hole of the connecting protruding ring, and the button 100 can be linked with the moving contact of the driving circuit breaker through the transmission of the U-shaped rod. At the same time, the connecting protruding ring also serves as the second limiting step 1002 for cooperating with the first boss 311 of the fixing member 30; the structure is fully utilized, the structural design is ingenious, and the structural complexity of the button 100 can be well reduced.

[0080] Furthermore, the connecting protrusion also extends to the position of the rear end of the first protrusion 211 of the corresponding locking piece 20. The first protrusion 211 of the locking piece 20 is limited by the first limiting step 1001 and the connecting protrusion. On the one hand, it satisfies the connection between the connecting protrusion and the U-shaped rod. On the other hand, limiting the front and rear ends of the first protrusion 211 of the locking piece 20 can better position the first protrusion 211 of the locking piece 20 and improve the assembly accuracy.

[0081] In this solution, the locking member 20 and the fixing member 30 are arranged side by side, and the second limiting step 1002 is used to simultaneously link with the moving contact of the driving circuit breaker and cooperate with the fixing member 30; all functional parts can be integrated in the area on one side of the button 100, so that the button can leave more space for cooperation with other parts, which greatly optimizes the layout space of the circuit breaker.

[0082] This embodiment also provides a circuit breaker, including the installation assembly of the circuit breaker described above.

[0083] The connector 10 provided in this solution can be used as a locking mechanism for locking or unlocking the button 100 and a fixing mechanism for fixing and unlocking the plug-in circuit breaker, thereby simplifying the structure, greatly reducing the difficulty of assembly, and occupying a small space, leaving more space for arranging other components, making the distribution between components more reasonable, and being suitable for miniaturized circuit breakers.

[0084] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, it should be understood by those skilled in the art that various changes may be made to the present invention in form and details without departing from the spirit and scope of the present invention as defined by the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A locking mechanism for a circuit breaker, comprising a circuit breaker housing, a button and a locking member, wherein the circuit breaker housing is provided with a button insertion opening, and the button is retractably and movably inserted into the circuit breaker housing through the button insertion opening, characterized in that: The locking piece is a connecting piece, including a first arm and a second arm connected to each other, a rotating connecting part is provided between the first arm and the second arm, a first boss is formed on the first arm, an elastic arm is integrally extended from the first arm, the extension direction of the elastic arm is away from the first boss, and a second boss is formed on the second arm, and the direction of the second boss is the same as the extension direction of the elastic arm; the locking piece is hinged in the circuit breaker housing through the rotating connecting part, and a clearance hole corresponding to the second boss of the locking piece is provided on the circuit breaker housing, the elastic arm abuts against the inner wall of the circuit breaker housing and applies an elastic force to the first boss of the locking piece to touch the button, and the second boss of the locking piece extends out of the circuit breaker housing through the clearance hole; the first boss of the locking piece is defined as the front end at the end facing the button insertion port, and the button is provided with a limiting step corresponding to the front end of the first boss of the locking piece.

2. The locking mechanism of the circuit breaker according to claim 1, characterized in that: The rotating connection part of the locking member is an axial hole, a hinge shaft is arranged in the circuit breaker housing, and the axial hole of the locking member is sleeved on the hinge shaft, thereby realizing the hinged setting of the locking member.

3. The locking mechanism of the circuit breaker according to claim 1, characterized in that: The second boss of the locking member has an insertion surface facing the cabinet when the circuit breaker is inserted, and the insertion surface is an inclined surface.

4. A fixing mechanism for a circuit breaker, comprising a circuit breaker housing, a button and a fixing member, wherein the circuit breaker housing is provided with a button insertion opening, and the button is retractably and movably inserted into the circuit breaker housing through the button insertion opening, characterized in that: The fixing member is a connecting member, including a first arm and a second arm connected to each other, a rotating connecting portion is provided between the first arm and the second arm, a first boss is formed on the first arm, an elastic arm is integrally extended from the first arm, the extension direction of the elastic arm is away from the first boss, a second boss is formed on the second arm, and the direction of the second boss is the same as the extension direction of the elastic arm; the fixing member is hinged in the circuit breaker housing through the rotating connecting portion, a clearance hole corresponding to the second boss of the fixing member is provided on the circuit breaker housing, the elastic arm abuts against the inner wall of the circuit breaker housing and applies an elastic force to the first boss of the fixing member to touch the button, and the second boss of the fixing member extends out of the circuit breaker housing through the clearance hole; the first boss of the fixing member is defined as the rear end at the end away from the button insertion port, and a limiting step corresponding to the rear end of the first boss of the fixing member is provided on the button.

5. The fixing mechanism of the circuit breaker according to claim 4, characterized in that: The rotating connection part of the fixing member is an axial hole, a hinge shaft is arranged in the circuit breaker housing, and the axial hole of the fixing member is sleeved on the hinge shaft, thereby realizing the hinged setting of the fixing member.

6. The fixing mechanism of the circuit breaker according to claim 4, characterized in that: The second boss of the fixing member has an insertion surface facing the cabinet when the circuit breaker is inserted, and the insertion surface is an inclined surface.

7. A circuit breaker mounting assembly, comprising a circuit breaker housing, a button, a locking member and a fixing member, wherein the circuit breaker housing is provided with a button insertion opening, and the button is retractably and movably inserted into the circuit breaker housing through the button insertion opening, characterized in that: The locking member and the fixing member are both connecting members, including a first arm and a second arm connected to each other, a rotating connecting portion is provided between the first arm and the second arm, a first boss is formed on the first arm, an elastic arm is integrally extended from the first arm, the extension direction of the elastic arm is away from the first boss, a second boss is formed on the second arm, and the direction of the second boss is the same as the extension direction of the elastic arm; the locking member and the fixing member are both hinged in the circuit breaker housing through the rotating connecting portion; a first clearance hole corresponding to the second boss of the locking member and a second clearance hole corresponding to the second boss of the fixing member are provided on the circuit breaker housing; The elastic arm of the locking member abuts against the inner wall of the circuit breaker housing to exert an elastic force on the first boss of the locking member to contact the button, and the second boss of the locking member extends out of the circuit breaker housing through the first clearance hole; The elastic arm of the fixing member abuts against the inner wall of the circuit breaker housing to exert an elastic force on the first boss of the fixing member to contact the button, and the second boss of the fixing member extends out of the circuit breaker housing through the second slot; The first boss is defined as having a front end facing the button insertion port and a rear end facing away from the button insertion port; the button is provided with a first limiting step corresponding to the front end of the first boss of the locking member and a second limiting step corresponding to the rear end of the first boss of the fixing member.

8. The circuit breaker mounting assembly according to claim 7, characterized in that: The rotating connection part of the locking member and the rotating connection part of the fixing member are both axial holes, a hinge shaft is provided in the circuit breaker housing, the axial hole of the locking member and the axial hole of the fixing member are both sleeved on the hinge shaft, and the first arms of the locking member and the fixing member overlap on the vertical projection plane in the axial direction of the hinge shaft.

9. The circuit breaker mounting assembly according to claim 7, characterized in that: The second boss of the locking member and the second boss of the fixing member both have an insertion surface facing the cabinet when the circuit breaker is inserted, and the insertion surface is an inclined surface.

10. The circuit breaker mounting assembly according to claim 7, characterized in that: The button is provided with a connecting protruding ring for linkage connection with the moving contact of the circuit breaker, and the connecting protruding ring protrudes from the outer surface of the button and serves as the second limiting step.

11. The circuit breaker mounting assembly according to claim 10, characterized in that: The connecting protruding ring also extends to a position corresponding to the rear end of the first boss of the locking member, and the first boss of the locking member is limited by the first limiting step and the connecting protruding ring.

12. A circuit breaker, characterized in that: At least includes the locking mechanism of the circuit breaker described in any one of claims 1 to 3, or the fixing mechanism of the circuit breaker described in any one of claims 4 to 6, or the mounting assembly of the circuit breaker described in any one of claims 7 to 11.

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