Modularized moving contact assembly and low-voltage switch

Abstract

The utility model relates to the technical field of low-voltage electric appliances, and particularly discloses a modularized moving contact assembly and a low-voltage switch, the modularized moving contact assembly comprises a module base frame with an accommodating space, a moving contact rod, an adapter, a first rotating shaft and an elastic piece are arranged in the accommodating space, the first rotating shaft is arranged on the moving contact rod and the adapter in a penetrating manner, and the elastic piece is arranged on the first rotating shaft. The moving contact rod and the adapter can respectively rotate around a first rotating shaft; the first rotating shaft is installed on the module base frame, and the module base frame is installed in a shell of the low-voltage switch and matched with a static contact assembly of the low-voltage switch to achieve opening or closing. All parts of the moving contact are integrally installed on the module base frame, space limitation of the shell is eliminated, the assembly difficulty can be effectively reduced, and the assembly efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of low-voltage electrical appliances, and in particular to a modular moving contact assembly and a low-voltage switch. Background Art

[0002] The prior art usually sets a mounting structure inside the housing of the low-voltage switch, so that the various components of the moving contact assembly are assembled and fixed through the mounting structure inside the housing. In actual production, it is necessary to install the various parts of the moving contact assembly into the housing in sequence. In this process, due to the limited internal space of the low-voltage switch housing, especially for the load switch or relay built into the electric meter, its volume is further reduced, and various assembly tools are usually difficult to enter, making it difficult for the staff to perform assembly operations, which ultimately leads to low assembly efficiency. In particular, for the assembly of elastic parts in the moving contact assembly, due to the small installation space, the difficulty of assembling the elastic parts increases, resulting in limited production efficiency. Utility Model Content

[0003] The purpose of the present application is to provide a modular moving contact assembly and a low-voltage switch, which integrate the moving contact components on a module base, eliminate the space limitations of the shell, and can effectively reduce the difficulty of assembly and improve assembly efficiency.

[0004] The embodiment of the present application is implemented as follows:

[0005] In the first aspect, an embodiment of the present application provides a modular moving contact assembly, including a module base frame having an accommodating space, wherein a moving contact rod, an adapter, a first rotating shaft and an elastic member are arranged in the accommodating space, wherein the first rotating shaft is passed through the moving contact rod and the adapter, and the moving contact rod and the adapter can rotate around the first rotating shaft respectively; the first rotating shaft is installed on the module base frame, and the module base frame is installed in the housing of the low-voltage switch, and is cooperated with the static contact assembly of the low-voltage switch to realize opening or closing of the switch.

[0006] As an optional implementation, the module base includes a first base and a second base arranged on both sides of the rotation plane of the moving contact rod, and the first base is connected to the second base via a plurality of connection components arranged at intervals.

[0007] As an optional embodiment, the first base frame is a first mounting plate, and the second base frame is a second mounting plate. The first mounting plate and the second mounting plate are parallel to the rotation plane. An accommodating space is formed between the first mounting plate and the second mounting plate for installing the moving contact rod, the adapter, the first rotating shaft and the elastic member. The first mounting plate and the second mounting plate are each provided with a first through hole for installing the first rotating shaft. One end of the elastic member abuts against the moving contact rod, and the other end abuts against the adapter.

[0008] As an optional embodiment, the connecting assembly includes at least one snap assembly and at least one guide assembly; the guide assembly includes a sleeve and a plug-in rod; the plug-in rod is plugged into the sleeve; the snap assembly includes a snap-in boss and a snap-in groove, and the snap-in boss is snap-in into the snap-in groove.

[0009] As an optional embodiment, a transmission assembly rotatably connected to the adapter is also provided in the accommodating space; a second rotating shaft parallel to and spaced apart from the first rotating shaft is provided between the first base frame and the second base frame, and the second rotating shaft is provided on the transmission assembly; the first mounting plate and the second mounting plate are each provided with a second through hole for installing the second rotating shaft.

[0010] As an optional embodiment, the transmission assembly includes a connecting rod and a rotating gear plate; the second rotating shaft is arranged on the rotating gear plate; one end of the connecting rod is rotatably connected to the rotating gear plate, and the other end is rotatably connected to the adapter; the rotating gear plate is driven to rotate, and the adapter and the moving contact rod are driven to rotate through the connecting rod; a first avoidance groove is arranged on the first base frame, and the extension arm of the connecting rod passes through the first avoidance groove, and cooperates with the position switch arranged on one side of the first base frame to indicate the opening and closing state; a second avoidance groove is arranged on the second base frame, and the connecting rod is inserted into the second avoidance groove.

[0011] As an optional embodiment, an installation chamber is provided on the module base frame, and a magnetic component is embedded in the installation chamber. The magnetic component is close to one end of the moving contact rod where the moving contact is provided; when the switch is closed, the magnetic component can generate an attractive force acting on the moving contact rod.

[0012] As an optional embodiment, a moving contact is provided at one end of the moving contact rod and a rotating connection part is provided at the other end; the first rotating shaft passes through the rotating connection part and the adapter, so that the rotating connection part and the adapter can rotate around the first rotating shaft; the rotating connection part is provided with a first blocking part extending radially along the first rotating shaft; the adapter is provided with a second blocking part; the elastic part is a torsion spring mounted on the first rotating shaft, and the two ends of the torsion spring are respectively abutted against the first blocking part and the second blocking part.

[0013] As an optional implementation, the second blocking portion is a U-shaped slot, and the opening of the U-shaped slot faces away from the first rotating shaft.

[0014] In the second aspect, an embodiment of the present application provides a low-voltage switch, comprising a shell, a static contact assembly and a modular moving contact assembly as described above, wherein the modular moving contact assembly is arranged inside the shell and is arranged in coordination with the static contact assembly; and further comprises a driving assembly for driving the moving contact on the moving contact rod and the static contact on the static contact assembly to open or close the switch.

[0015] The beneficial effects of the embodiments of the present application include:

[0016] In the first aspect, the embodiment of the present application provides a modular moving contact assembly, including a module base, a moving contact rod and an adapter; the embodiment of the present application rotatably mounts the moving contact rod and the adapter on the module base; the module base is installed in the housing of the low-voltage switch. Compared with the prior art, the embodiment of the present application directly mounts the various components of the moving contact assembly on the module base, integrates the moving contact assembly through the module base, and then fixes the entire integrated module into the housing. During installation, since the module base is independent of the housing, the limitation of the housing space can be removed, which is conducive to reducing the difficulty of assembly and facilitating installation by the staff.

[0017] In the second aspect, the embodiment of the present application also discloses a low-voltage switch, including a housing, a static contact assembly, and a modular moving contact assembly as described above, wherein the modular moving contact assembly is arranged inside the housing and is arranged in cooperation with the static contact assembly; and further includes a driving assembly for driving the moving contact on the moving contact rod to open or close the static contact on the static contact assembly. Compared with the prior art, the low-voltage switch of the embodiment of the present application adopts the above-mentioned modular moving contact assembly to avoid direct connection of the various components of the moving contact assembly with the housing. The embodiment of the present application integrates the various components of the moving contact on the module base frame, eliminating the space limitation of the housing, which can effectively reduce the difficulty of assembly and improve the assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is one of the structural schematic diagrams of the modular moving contact assembly of the embodiment of the present application;

[0020] Figure 2 This is the second structural schematic diagram of the modular moving contact assembly of the embodiment of the present application;

[0021] Figure 3 This is the third structural schematic diagram of the modular moving contact assembly of the embodiment of the present application;

[0022] Figure 4 This is the fourth structural schematic diagram of the modular moving contact assembly of the embodiment of the present application;

[0023] Figure 5 This is the fifth structural schematic diagram of the modular moving contact assembly of the embodiment of the present application.

[0024] Icons: 100-module base; 101-moving contact rod; 102-adapter; 103-elastic member; 104-housing; 105-first base; 106-second base; 107-first mounting plate; 108-second mounting plate; 109-accommodating space; 110-plug-in rod; 111-sleeve; 112-clamping boss; 113-clamping slot; 114-installation chamber; 115-magnetic member; 116-moving contact; 117-rotating connection part; 118-first rotating shaft; 119-first blocking part; 120-second blocking part; 121-connecting rod; 122-rotating gear disc; 123-second rotating shaft; 124-U-shaped clamping slot. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0027] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0028] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0029] The prior art usually sets a mounting structure in the housing 104 of the low-voltage switch, so that the various components of the moving contact assembly are assembled and fixed through the mounting structure inside the housing 104. In actual production, it is necessary to install the various parts of the moving contact assembly into the housing 104 in sequence. In this process, due to the limited internal space of the low-voltage switch housing 104, various assembly tools are usually difficult to enter, which makes it difficult for the staff to perform assembly operations, and ultimately leads to low assembly efficiency. In particular, for the assembly of the elastic member 103 in the moving contact assembly, due to the small installation space, the assembly difficulty of the elastic member 103 increases, resulting in limited production efficiency.

[0030] In order to solve the above technical problems, the embodiments of the present application disclose a modular moving contact assembly and a low-voltage switch.

[0031] First, refer to Figure 1 , Figure 2 as well as Figure 3 As shown, the embodiment of the present application provides a modular moving contact assembly, including a module base frame 100 with an accommodating space 109, in which a moving contact rod 101, an adapter 102, a first rotating shaft 118 and an elastic member 103 are arranged, the first rotating shaft 118 is penetrated through the moving contact rod 101 and the adapter 102, and the moving contact rod 101 and the adapter 102 can rotate around the first rotating shaft 118 respectively; one end of the elastic member 103 abuts against the moving contact rod 101, and the other end abuts against the adapter 102; the module base frame 100 is installed in the housing 104 of the low-voltage switch, and is arranged in cooperation with the static contact assembly of the low-voltage switch to realize opening or closing. Among them, the first rotating shaft 118 is rotatably connected to the module base frame 100.

[0032] It should be noted that the module base 100 of the embodiment of the present application can be directly installed in the housing 104 of the low-voltage switch, and all parts of the moving contact assembly can be integrated and installed on the module base 100.

[0033] It should be noted that the module base 100 can be clamped with the housing 104 of the low-voltage switch through a clamping assembly, or the module base 100 and the low-voltage switch can be fixed through other connecting assemblies. For example, bolts and other connecting members can be used for fixing.

[0034] It should be noted that the module base frame 100 of the embodiment of the present application can be selected by those skilled in the art according to their needs, and there is no special limitation on this.

[0035] Among them, the movable contact rod 101, the adapter 102 and the elastic member 103 of the embodiment of the present application are directly installed on the module base 100. During installation, the staff performs assembly operations outside the housing 104. Therefore, the space limitation of the housing 104 can be removed, which is conducive to reducing the difficulty of assembly and facilitating installation by the staff. After the modular movable contact assembly is assembled, the modular movable contact assembly is installed as a whole into the housing 104 structure, so that the modular movable contact assembly cooperates with other components such as the static contact assembly to realize the on-off control of the circuit.

[0036] Reference Figure 1 , Figure 2 as well as Figure 3 As shown, the embodiment of the present application provides a modular moving contact assembly, including a module base 100, a moving contact rod 101, a first rotating shaft 118 and an adapter 102; the embodiment of the present application rotatably mounts the moving contact rod 101, the first rotating shaft 118 and the adapter 102 on the module base 100; the module base 100 is also provided with an elastic member 103, one end of the elastic member 103 abuts against the moving contact rod 101, and the other end abuts against the adapter 102; the module base 100 is installed in the housing 104 of the low-voltage switch. Compared with the prior art, the embodiment of the present application directly mounts the various components of the moving contact assembly on the module base 100, integrates the moving contact assembly through the module base 100, and then fixes the entire integrated module into the housing 104. During installation, since the module base 100 is independent of the housing 104, the space limitation of the housing 104 can be removed, which is conducive to reducing the difficulty of assembly and facilitating installation by the staff.

[0037] Reference Figure 3 as well as Figure 4 As shown, as an optional embodiment, the module base 100 includes a first base 105 and a second base 106 arranged on both sides of the rotation plane of the moving contact rod 101, and the first base 105 and the second base 106 are connected through a plurality of spaced connection components.

[0038] The module base frame 100 of the embodiment of the present application is composed of two parts, including a first base frame 105 and a second base frame 106. The first base frame 105 and the second base frame 106 are connected by spaced connection components, and the specific structure can be selected by those skilled in the art according to needs.

[0039] Reference Figure 3 as well as Figure 4As shown, as an optional embodiment, the first base frame 105 is a first mounting plate 107, the second base frame 106 is a second mounting plate 108, the first mounting plate 107 and the second mounting plate 108 are parallel to the rotation plane, and an accommodation space 109 is formed between the first mounting plate 107 and the second mounting plate 108 for mounting the moving contact rod 101, the adapter 102, the first rotating shaft 118 and the elastic member 103. The first mounting plate 107 and the second mounting plate 108 are each provided with a first through hole for mounting the first rotating shaft 118.

[0040] Specifically, in the embodiment of the present application, the first mounting plate 107 and the second mounting plate 108 are parallel to the rotation plane, so that an accommodation space 109 can be formed between the first mounting plate 107 and the second mounting plate 108. The formation of the accommodation space 109 allows for quick assembly of components such as the moving contact rod 101, the adapter 102, the first rotating shaft 118, and the elastic member 103. Furthermore, the first mounting plate 107 and the second mounting plate 108 are each provided with a first through hole for mounting the first rotating shaft 118.

[0041] Compared with the prior art, the embodiment of the present application integrates the moving contact components into the accommodating space 109 of the module base 100, which can eliminate the space limitation of the housing 104 of the low-voltage switch during installation, thereby effectively reducing the assembly difficulty and improving the assembly efficiency.

[0042] Reference Figure 3 as well as Figure 4 As shown, as an optional embodiment, the connecting assembly includes at least one snap-fit ​​assembly and at least one guide assembly; the guide assembly includes a sleeve 111 and a plug-in rod 110, which are respectively arranged on the first base 105 and the second base 106, or respectively arranged on the second base 106 and the first base 105; the plug-in rod 110 is plugged in with the sleeve 111; the snap-fit ​​assembly includes a snap-fit ​​boss 112 and a snap-fit ​​groove 113, the snap-fit ​​boss 112 and the snap-fit ​​groove 113 are snap-fitted, and are respectively arranged on the first base 105 and the second base 106, or respectively arranged on the second base 106 and the first base 105.

[0043] The first base frame 105 and the second base frame 106 are connected by at least one buckle assembly and at least one guide assembly, so that the modular moving contact assembly has good positioning and ensures the reliability of the mechanism. During the specific assembly and installation process, the staff can first install the moving contact rod 101, the adapter 102, the elastic member 103 and other parts on the first base frame 105 / the second base frame 106, and then use the second base frame 106 / the first base frame 105 to buckle with it, and the two are stably connected through the connecting assembly. Those skilled in the art can make a choice according to their needs, and there is no special limitation on this. Preferably, the connecting assembly is two guide assemblies and a buckle assembly, so that the number of parts is small and the connection between the first mounting plate 107 and the second mounting plate 108 is more stable.

[0044] Reference Figure 1 As shown, as an optional embodiment, an installation chamber 114 is set on the module base 100, and a magnetic member 115 is embedded in the installation chamber 114. The magnetic member 115 is close to one end of the moving contact rod 101 where the moving contact 116 is set; when the switch is closed, the magnetic member 115 can generate an attractive force acting on the moving contact rod 101.

[0045] It should be noted that in the embodiment of the present application, a magnetic member 115 is embedded in the mounting chamber 114 on the module base 100. When the switch is closed, the current is conducted to form a magnetic field, and the magnetic member 115 can generate an attractive force on the moving contact rod 101 to ensure that the switch has a high contact force.

[0046] Reference Figure 5 As shown, as an optional embodiment, a moving contact 116 is provided at one end of the moving contact rod 101, and a rotating connection part 117 is provided at the other end; a first rotating shaft 118 is provided on the module base 100, and the first rotating shaft 118 passes through the rotating connection part 117 and the adapter 102, so that the rotating connection part 117 and the adapter 102 can rotate around the first rotating shaft 118; a first blocking part 119 extending radially along the first rotating shaft 118 is provided on the rotating connection part 117; a second blocking part 120 is provided on the adapter 102; the elastic part 103 is a torsion spring sleeved on the first rotating shaft 118, and the two ends of the torsion spring are respectively abutted against the first blocking part 119 and the second blocking part 120.

[0047] Reference Figure 5As shown, further, a transmission assembly rotatably connected to the adapter 102 is also provided in the accommodation space 109; a second rotating shaft 123 is provided between the first base frame 105 and the second base frame 106 and is parallel to and spaced from the first rotating shaft 118, and the first mounting plate 107 and the second mounting plate 108 are each provided with a second through hole for mounting the second rotating shaft 123; the second rotating shaft 123 is provided on the transmission assembly, and the transmission assembly is connected to the first base frame 105 and the second base frame 106 through the second rotating shaft 123, so that the transmission assembly can be stably installed in the accommodation space 109. By further integrating the transmission assembly and the moving contact assembly in the accommodation space 109, these parts are integrated into a whole module, and the staff can complete the installation by directly connecting it with the drive assembly.

[0048] Furthermore, the transmission assembly includes a connecting rod 121 and a rotating gear plate 122; a second rotating shaft 123 is arranged on the rotating gear plate 122; one end of the connecting rod 121 is rotatably connected to the rotating gear plate 122, and the other end is rotatably connected to the adapter 102; the rotating gear plate 122 is driven to rotate, and the adapter 102 and the moving contact rod 101 are driven to rotate through the connecting rod 121.

[0049] Furthermore, a first avoidance groove is provided on the first base frame 105 of the embodiment of the present application, and an extension arm of the connecting rod 121 extending away from the second base frame 106 passes through the first avoidance groove, and cooperates with a position switch provided on one side of the first base frame 105 to indicate the opening and closing state; a second avoidance groove is provided on the second base frame 106, and the connecting rod 121 is accommodated in the second avoidance groove, so that the modular moving contact assembly is smaller in size.

[0050] In the embodiment of the present application, the extension arm of the connecting rod 121 passes through the first avoidance groove and can be linked with the position switch. When the end of the connecting rod 121 is rotated to the closing position or the opening position, the position switch can be triggered to realize the position detection of the opening and closing. It should be noted that the position switch can be selected by technicians in the field according to needs, and there is no special limitation on this.

[0051] The connecting rod 121 of the embodiment of the present application is accommodated in the second avoidance groove, which is beneficial to reducing the distance between the first base frame 105 and the second base frame 106, thereby reducing the volume of the entire module base frame 100 and facilitating integrated arrangement.

[0052] Reference Figure 1 as well as Figure 5 As shown, as an optional implementation, the second blocking portion 120 is a U-shaped slot 124 , and the opening of the U-shaped slot 124 faces away from the first rotation axis 118 .

[0053] Second, refer to Figure 1 as well as Figure 2As shown, an embodiment of the present application also discloses a low-voltage switch, including a shell 104, a static contact assembly and a modular moving contact assembly as described above, wherein the modular moving contact assembly is arranged inside the shell 104 and is arranged in cooperation with the static contact assembly; and also includes a driving assembly for driving the moving contact 116 on the moving contact rod 101 to open or close the static contact on the static contact assembly.

[0054] It should be noted that the driving assembly can drive the rotating gear disc 122 to rotate, and then drive the adapter 102 and the moving contact rod 101 to rotate through the connecting rod 121.

[0055] Compared with the prior art, the low-voltage switch of the embodiment of the present application adopts the above-mentioned modular moving contact assembly to avoid the direct connection of the various components of the moving contact assembly with the shell 104. The embodiment of the present application integrates the various moving contact components on the module base 100, eliminates the space limitation of the shell 104, and can effectively reduce the difficulty of assembly and improve assembly efficiency.

[0056] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A modular moving contact assembly, characterized in that: It includes a module base with an accommodating space, in which a moving contact rod, an adapter, a first rotating shaft and an elastic member are arranged, the first rotating shaft is penetrated by the moving contact rod and the adapter, and the moving contact rod and the adapter can rotate around the first rotating shaft respectively; the first rotating shaft is installed on the module base, and the module base is installed in the housing of the low-voltage switch, and is arranged in cooperation with the static contact assembly of the low-voltage switch to realize opening or closing.

2. The modular moving contact assembly according to claim 1, characterized in that: The module base frame includes a first base frame and a second base frame arranged on both sides of the rotation plane of the moving contact rod, and the first base frame is connected to the second base frame through a plurality of spaced connection components.

3. The modular moving contact assembly according to claim 2, characterized in that: The first base frame is a first mounting plate, and the second base frame is a second mounting plate. The first mounting plate and the second mounting plate are parallel to the rotating plane. An accommodating space is formed between the first mounting plate and the second mounting plate for installing the moving contact rod, the adapter, the first rotating shaft and the elastic member. The first mounting plate and the second mounting plate are each provided with a first through hole for installing the first rotating shaft. One end of the elastic member abuts against the moving contact rod, and the other end abuts against the adapter.

4. The modular moving contact assembly according to claim 2, characterized in that: The connecting assembly includes at least one buckle assembly and at least one guide assembly; the guide assembly includes a sleeve and a plug-in rod; the plug-in rod is plugged in with the sleeve; the buckle assembly includes a snap-in boss and a slot, and the snap-in boss is snap-in with the slot.

5. The modular moving contact assembly according to claim 3, characterized in that: A transmission assembly rotatably connected to the adapter is also provided in the accommodating space; a second rotating shaft parallel to and spaced apart from the first rotating shaft is provided between the first base frame and the second base frame, the second rotating shaft is provided on the transmission assembly, and the first mounting plate and the second mounting plate are each provided with a second through hole for mounting the second rotating shaft.

6. The modular moving contact assembly according to claim 5, characterized in that: The transmission assembly includes a connecting rod and a rotating gear plate; the second rotating shaft is arranged on the rotating gear plate; one end of the connecting rod is rotatably connected to the rotating gear plate, and the other end is rotatably connected to the adapter; the rotating gear plate is driven to rotate, and the adapter and the moving contact rod are driven to rotate through the connecting rod; a first avoidance groove is arranged on the first base frame, and the extension arm of the connecting rod passes through the first avoidance groove, and cooperates with the position switch arranged on one side of the first base frame to indicate the opening and closing state; a second avoidance groove is arranged on the second base frame, and the connecting rod is inserted into the second avoidance groove.

7. The modular moving contact assembly according to any one of claims 1 to 4, characterized in that: An installation chamber is arranged on the module base frame, and a magnetic component is embedded in the installation chamber. The magnetic component is close to one end of the moving contact rod where the moving contact is arranged. When the switch is closed, the magnetic component can generate an attractive force acting on the moving contact rod.

8. The modular moving contact assembly according to any one of claims 1 to 4, characterized in that: A moving contact is provided at one end of the moving contact rod, and a rotating connection part is provided at the other end; the first rotating shaft passes through the rotating connection part and the adapter, so that the rotating connection part and the adapter can rotate around the first rotating shaft; a first blocking part extending radially along the first rotating shaft is provided on the rotating connection part; a second blocking part is provided on the adapter; the elastic part is a torsion spring sleeved on the first rotating shaft, and the two ends of the torsion spring are respectively abutted against the first blocking part and the second blocking part.

9. The modular moving contact assembly according to claim 8, characterized in that: The second blocking portion is a U-shaped slot, and the opening of the U-shaped slot faces away from the first rotating shaft.

10. A low voltage switch, characterized in that: It includes a shell, a static contact assembly and a modular moving contact assembly as described in any one of claims 1 to 9, wherein the modular moving contact assembly is arranged inside the shell and is arranged in coordination with the static contact assembly; it also includes a driving assembly for driving the moving contact on the moving contact rod and the static contact on the static contact assembly to open or close the switch.

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