Transmission structure and load switch

Abstract

The utility model relates to the technical field of low-voltage electric appliances, in particular to a transmission structure and a load switch, comprising an armature assembly, a transmission rod and an elastic element, the armature assembly is rotatably installed in a housing of the load switch and is driven by a coil assembly of the load switch. The armature assembly is provided with a sliding groove, and the sliding groove is formed in the side away from the coil assembly. The first end of the transmission rod is inserted into the sliding groove, and the second end of the transmission rod is used for being connected with the moving contact. The elastic element is connected with the armature assembly and the transmission rod; when the electromagnetic assembly drives the moving contact to be switched on through the armature assembly and the transmission rod, the elastic element deforms to generate contact pressure, the assembly difficulty is reduced, and the assembly convenience is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of low-voltage electrical apparatus, in particular to a transmission structure and a load switch. BACKGROUND

[0002] The load switch is a switch device specially designed to turn on and off the load current in the circuit, which is widely used in the distribution network of the power system, and usually has certain arc extinguishing capacity to ensure safe breaking under the load current. The prior art usually sets an elastic element on the moving contact to realize the overtravel design and contact pressure retention of the moving contact. This results in a relatively complex structure of the moving contact, increases the occupied space, and also increases the complexity and assembly difficulty of the entire device. CONTENT OF THE UTILITY MODEL

[0003] The purpose of the present application is to provide a transmission structure and a load switch which can reduce the assembly difficulty and improve the assembly convenience.

[0004] The embodiments of the present application are implemented as follows:

[0005] In a first aspect, the embodiments of the present application provide a transmission structure configured in a load switch, which comprises an armature assembly, a transmission rod and an elastic element; the armature assembly is rotationally installed in the housing of the load switch and is driven by a coil assembly of the load switch; a sliding slot is arranged on the armature assembly, and the sliding slot is arranged on the side away from the coil assembly; the first end of the transmission rod is inserted into the sliding slot, and the second end is used to connect with the moving contact; the elastic element connects the armature assembly and the transmission rod; when the transmission rod drives the moving contact to close under the driving of the armature assembly and the coil assembly, the elastic element deforms to provide contact pressure for the moving contact, and the first end moves in the sliding slot to provide contact overtravel for the moving contact.

[0006] As an optional implementation, the armature assembly comprises a rotating part and an extension part; the rotating part is close to the coil assembly, one end of the extension part is connected with the rotating part, and the other end extends away from the coil assembly; the sliding slot is arranged on the free end of the extension part, and the length of the sliding slot is greater than or equal to the contact overtravel.

[0007] As an optional implementation, the elastic element comprises a torsion spring element; a rotating shaft is arranged on the extension part, the torsion spring element is arranged on the rotating shaft, and one end of the torsion spring element abuts against the armature assembly and the other end abuts against the first end of the transmission rod.

[0008] As an optional implementation, the elastic element is arranged at one side of the extension part close to or away from the bottom of the shell, and the armature assembly is further provided with a first limiting part and a second limiting part, one end of the torsion spring element abuts against the first limiting part, and the other end can abut against the second limiting part, so as to realize installation and positioning of the torsion spring element when the transmission rod is not installed.

[0009] As an optional implementation, one end of the movable contact is rotatably installed on the shell, and the other end is provided with a contact and a connecting part and is arranged on two sides of the movable contact; the second end of the transmission rod is hingedly connected with the connecting part.

[0010] As an optional implementation, the application further comprises a suction-assisting elastic element; the suction-assisting elastic element is arranged on two sides of the extension part together with the movable contact.

[0011] In the open position, one side of the extension part away from the movable contact abuts against the suction-assisting elastic element, the suction-assisting elastic element is deformed to store energy to generate an acting force acting on the extension part, so as to assist the movable contact to close.

[0012] In the second aspect, the embodiments of the application provide a load switch, comprising a shell, a coil assembly, a movable contact, a static contact and the transmission structure described above; the coil assembly drives the armature assembly to move in the shell, and drives the movable contact to move to open and close through the transmission rod.

[0013] As an optional implementation, the application further comprises a movable contact lead-out sheet and a flexible element; one end of the flexible element is connected with the movable contact lead-out sheet, and the other end is connected with the rotating end of the movable contact.

[0014] As an optional implementation, the application further comprises an arc extinguishing assembly, the arc extinguishing assembly is arranged close to the static contact, and the arc extinguishing assembly comprises a U-shaped arc extinguishing chamber and a plurality of arc extinguishing sheets arranged at intervals and inserted into two side plates of the U-shaped arc extinguishing chamber.

[0015] As an optional implementation, the movable contact is arranged between the coil assembly and the movable contact lead-out sheet; and the arc extinguishing assembly is arranged close to the movable contact.

[0016] As an optional implementation, the movable contact is provided with a first magnetic enhancer on one side away from the static contact; and the movable contact lead-out sheet is provided with a second magnetic enhancer on one side away from the movable contact.

[0017] The beneficial effects of the embodiments of the application include:

[0018] The transmission structure provided by the embodiment of the application is configured in the load switch, and the transmission structure comprises an armature assembly, a transmission rod and an elastic element; the armature assembly is rotatably installed in a housing of the load switch and is driven by a coil assembly of the load switch; the armature assembly is provided with a sliding groove, and the sliding groove is arranged on a side away from the coil assembly; a first end of the transmission rod is inserted into the sliding groove, and a second end is used for being connected with a movable contact; when the electromagnetic assembly drives the movable contact to close by the armature assembly and the transmission rod, the elastic element is deformed to generate contact pressure, and then, by the design of the sliding groove, overtravel can be provided for the contact of the movable contact and a static contact. The structure of the application is simple, which is conducive to reducing assembly difficulty and improving assembly convenience.

[0019] The embodiment of the application provides a load switch, which comprises a housing, a coil assembly, a movable contact and the above-mentioned transmission structure; the coil assembly drives the armature assembly to move in the housing and drives the movable contact to open and close by the transmission rod. The load switch provided by the embodiment of the application not only can solve the wear problem of the transmission rod and the armature and improve the service life, but also can reduce assembly difficulty and be conducive to improving assembly convenience. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the application, and therefore should not be regarded as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0021] Figure 1 FIG. 1 is a structural schematic diagram of a load switch according to an embodiment of the application;

[0022] Figure 2 FIG. 2 is another structural schematic diagram of the load switch according to the embodiment of the application;

[0023] Figure 3 FIG. 3 is a third structural schematic diagram of the load switch according to the embodiment of the application;

[0024] Figure 4 FIG. 4 is a fourth structural schematic diagram of the load switch according to the embodiment of the application;

[0025] Figure 5 FIG. 5 is a fifth structural schematic diagram of the load switch according to the embodiment of the application;

[0026] Figure 6 FIG. 6 is a sixth structural schematic diagram of the load switch according to the embodiment of the application.

[0027] FIG. 1 is a structural schematic diagram of a load switch according to an embodiment of the application;

[0028] 100 - armature assembly; 101 - transmission rod; 102 - housing; 103 - coil assembly; 104 - sliding slot; 105 - first end; 106 - second end; 107 - movable contact; 108 - rotating part; 109 - extension part; 110 - torsion spring element; 111 - rotating shaft; 112 - suction assisting elastic element; 113 - connecting part; 114 - movable contact lead-out piece; 115 - arc extinguishing assembly; 116 - stationary contact; 117 - first magnetic enhancer; 118 - second magnetic enhancer; 119 - first limiting part; 120 - second limiting part. DETAILED DESCRIPTION

[0029] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the accompanying drawings for the embodiments of the present application to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only some 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 accompanying drawings can be arranged and designed in various different configurations.

[0030] 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 claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0031] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, 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" and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "setting", "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or detachably connected, or integrally connected; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0033] The prior art usually designs elastic elements on the movable contact to achieve the overtravel design and contact pressure retention required by the load switch, resulting in a relatively complex structure of the movable contact, increasing the occupied space, and also increasing the complexity and assembly difficulty of the entire device.

[0034] To solve the above technical problems, the embodiment of the present application provides a transmission structure and a load switch.

[0035] Referring to Figure 1 The transmission structure provided by the embodiment of the present application is configured in the load switch, and includes an armature assembly 100, a transmission rod 101 and an elastic element. The armature assembly 100 is rotatably installed in a housing 102 of the load switch and is driven by a coil assembly 103 of the load switch. The armature assembly 100 is provided with a sliding groove 104, which is arranged on the side away from the coil assembly 103. A first end 105 of the transmission rod 101 is inserted into the sliding groove 104, and a second end 106 is used for connecting with a moving contact 107. The elastic element connects the armature assembly 100 and the transmission rod 101. When the coil assembly 103 drives the moving contact 107 to close through the armature assembly 100 and the transmission rod 101, the elastic element is deformed to provide contact pressure for the moving contact 107, and the first end 105 moves in the sliding groove 104 to provide contact overtravel for the moving contact 107. The elastic element and the first end 105 store elastic potential energy and generate elastic force to block the sliding of the first end 105 in the sliding groove 104.

[0036] It should be noted that the embodiment of the present application sets the sliding groove 104 on the armature assembly 100 and arranges the sliding groove 104 on the side away from the coil assembly 103. This design allows the first end 105 of the transmission rod 101 to freely slide in the sliding groove 104, thereby providing a more flexible working environment for the elastic element. The sliding of the first end 105 of the transmission rod 101 in the sliding groove 104 realizes overtravel design, and the contact pressure during closing is maintained by the abutting of the elastic element and the first end 105.

[0037] The existing conventional technology often sets a push card on the armature assembly 100, which directly pushes a moving contact assembly. The moving contact assembly is often an elastic element, such as a copper foil, which uses the deformation of the elastic element itself to generate contact pressure. This design is high in cost when used in high-current products.

[0038] The second conventional technology also uses an elastic element in the contact accessory. On the one hand, the reliability of the elastic element may be reduced due to the influence of high temperature caused by electric arc. The embodiment of the present application uses a conventional torsion spring, which has a relatively stable spring force value and is easy to manufacture.

[0039] Unlike the prior art, the elastic element of the embodiment of the application is directly connected between the armature assembly 100 and the transmission rod 101, and when the movable contact 107 is closed, the elastic element can store elastic potential energy and generate an elastic force that prevents the first end 105 from sliding in the sliding groove 104. It should be noted that the spring element of the embodiment of the application directly applies an elastic force to the transmission rod 101, which has higher transmission efficiency. Therefore, the embodiment of the application reduces the dependence on large torsional springs and reduces the size and complexity of the overall device.

[0040] The technical effects that can be achieved by the embodiment of the application are as follows:

[0041] When the electromagnetic assembly of the embodiment of the application drives the movable contact to be closed through the armature assembly and the transmission rod, the elastic element deforms to generate contact pressure, and then through the design of the sliding groove, an overtravel can be provided for the contact between the movable and static contacts. The structure of the application is simple, which is conducive to reducing assembly difficulty and improving assembly convenience.

[0042] The embodiment of the application improves the reliability and service life of the device: by reducing the risk of wear and fatigue failure of the connection point between the key component transmission rod 101 and the armature, the service life of the entire device is significantly prolonged. In addition, the problem of transmission efficiency reduction caused by transmission ratio change due to wear can be avoided.

[0043] The embodiment of the application saves space and reduces complexity: the small elastic element is used instead of the traditional large torsional spring, so that the entire transmission structure is more compact, the required space is reduced, and the manufacturing and assembly complexity is reduced.

[0044] The embodiment of the application enhances the operation stability and efficiency: the reasonable configuration of the elastic element ensures stable contact pressure during the closing process of the movable contact 107, which improves the operation performance and stability of the switch.

[0045] Referring to Figure 2 and Figure 3 As an optional embodiment, the armature assembly 100 includes a rotating part 108 and an extension part 109; the rotating part 108 is close to the coil assembly 103, the extension part 109 is connected at one end to the rotating part 108 and extends in a direction away from the coil assembly 103 at the other end; the sliding groove 104 is opened at the free end of the extension part 109, and the length of the sliding groove 104 is greater than or equal to the contact overtravel.

[0046] It should be noted that the rotating part 108 of the embodiment of the application is arranged close to the coil assembly 103, which facilitates efficient driving of the coil assembly 103 and is conducive to improving the compactness of the structure.

[0047] The extension 109 is connected to the rotating part 108 at one end and extends away from the coil assembly 103 at the other end. The sliding groove 104 is arranged at the free end of the extension 109, i.e. away from the coil assembly 103. This design allows the sliding groove 104 to work without being directly affected by the coil assembly 103, increasing the flexibility and practicality of the design.

[0048] Since the sliding groove 104 is located at the free end of the extension 109, the elastic element can more effectively act on the first end 105 of the transmission rod 101, thereby providing precise control and adjustment capabilities. This helps to ensure the required contact pressure and stability when the moving contact 107 is closed.

[0049] Referring to Figure 2 and Figure 3 , as an optional embodiment, the elastic element includes a torsion spring element 110; the extension 109 is provided with a rotating shaft 111, and the torsion spring element 110 is sleeved on the rotating shaft 111, with one end abutting against the armature assembly 100 and the other end abutting against the first end 105 of the transmission rod 101.

[0050] It should be noted that the present embodiment is provided with the rotating shaft 111 on the extension 109, and the torsion spring element 110 is sleeved on the rotating shaft 111, with one end abutting against the armature assembly 100 and the other end abutting against the first end 105 of the transmission rod 101, i.e. the end inserted into the sliding groove 104. In this way, when the moving contact 107 is closed, the torsion spring element 110 can generate an elastic force to prevent the first end 105 from sliding excessively in the sliding groove 104.

[0051] Specifically, when the coil assembly 103 drives the armature assembly 100 to rotate, the first end 105 of the transmission rod 101 slides in the sliding groove 104, while the torsion spring element 110 stores elastic potential energy and provides a reverse force when needed, ensuring the stability of the pressure when the moving contact 107 is in contact.

[0052] The present embodiment forms a compact and effective force transmission path by arranging the torsion spring element 110 on the rotating shaft 111 and abutting its two ends against the armature assembly 100 and the transmission rod 101, respectively. The torsion spring element 110 of the present embodiment can provide a stable elastic force during the closing of the moving contact 107, ensuring the stability of the contact pressure and reducing the operation failure caused by poor contact. In addition, this design of the present embodiment also reduces the wear between key components, prolonging the service life of the equipment. Compared with the traditional large torsion spring arrangement, this design is more compact, saving space, so that the overall size of the load switch can be reduced to meet the needs of more application scenarios.

[0053] In addition, the torsion spring element 110 cooperates with the sliding groove 104 and the transmission rod 101, so that the movement of the movable contact 107 is more accurate and stable during the closing process, and the reliability and consistency of the operation are improved.

[0054] The movable contact 107 is rotatably installed at one end of the housing 102, and the other end is provided with a contact and a connecting portion 113, and the two are arranged on both sides of the extension direction of the movable contact 107; the second end 106 of the transmission rod 101 is hinged with the connecting portion 113.

[0055] It should be noted that the spring element can be arranged on any side of the extension portion 109.

[0056] For example, as shown in Figure 1 , Figure 3 and Figure 4 , the elastic element is arranged on the side of the extension portion 109 close to the base of the housing 102. For example, as shown in Figure 5 , the elastic element is arranged on the side of the extension portion 109 away from the base of the housing 102.

[0057] Further, as shown in Figure 5 , the armature assembly 100 of the present application is provided with a first limiting portion 119 and a second limiting portion 120, one end of the torsion spring element 110 abuts against the first limiting portion 119, and the other end abuts against the second limiting portion 120. The second limiting portion 120 is used to realize stable positioning of the torsion spring element 110 when the first end 105 of the transmission rod 101 has not been installed into the sliding groove 104, so as to facilitate installation of the transmission rod 101. Further, the first limiting portion 119 is arranged on the rotating portion 108, and the second limiting portion 120 is arranged on the extension portion 109.

[0058] It should be noted that, as shown in Figure 5 , the second limiting portion 120 of the present application is arranged close to the free end of the extension portion 109, so that the end of the torsion spring element 110 abuts against the second limiting portion 120 before the transmission rod 101 is installed, ensuring the stability of the torsion spring element 110. When the first end 105 of the transmission rod 101 is installed, the leg portion of the torsion spring element 110 is pushed away from the second limiting portion 120 by the first end 105, so that the torsion spring element 110 abuts against the first end 105.

[0059] Unlike the above Figure 5 embodiment, as shown in Figure 6 , the arrangement position of the second limiting portion 120 is adjusted, and the second limiting portion 120 is arranged between the sliding groove 104 and the rotating shaft 111. Before the transmission rod 101 is installed, the pre-installation of the torsion spring element 110 can be realized, which is beneficial to reduce the installation difficulty of the transmission rod 101.

[0060] As an optional implementation, the elastic element comprises a tension spring; one end of the tension spring is connected with the first end 105 of the transmission rod 101, and the other end is connected with the armature assembly 100.

[0061] Unlike the above arrangement, the linear tension provided by the tension spring can directly act on the transmission rod 101, reducing the loss in the force transmission process and improving the working efficiency of the entire transmission structure. The optional implementation of using a tension spring as an elastic element in the embodiment of the application not only simplifies the structure, reduces the occupied space, but also significantly improves the stability and consistency of operation, and enhances the durability and adaptability of the equipment.

[0062] Referring to Figure 4 As an optional implementation, the load switch further comprises an auxiliary suction elastic element 112; the auxiliary suction elastic element 112 and the movable contact 107 are arranged on both sides of the extension part 109 respectively.

[0063] In the off position, the side of the extension part 109 away from the movable contact 107 abuts against the auxiliary suction elastic element 112, the auxiliary suction elastic element 112 is deformed and compressed to generate an acting force acting on the extension part 109, so as to make the movable contact 107 have a tendency to generate a closing movement, and provide an auxiliary force for the movement of the armature assembly 100 in the initial closing stage.

[0064] It should be noted that the auxiliary suction elastic element 112 can be a metal elastic sheet or other types of elastic elements, such as a spring element.

[0065] The embodiment of the application provides an additional acting force through the auxiliary suction elastic element 112, so as to ensure that the armature assembly 100 can be quickly started when closing, and the acting force generated by the auxiliary suction elastic element 112 can help the movable contact 107 to complete the closing action more quickly and stably in the closing process, thereby reducing the operation time and improving the overall operation efficiency.

[0066] In addition, the embodiment of the application realizes elastic blocking of the armature assembly 100 through the auxiliary suction elastic element 112, avoids rigid collision between the armature assembly 100 and the shell 102, is beneficial to avoiding unnecessary collision wear, and thereby improves the service life.

[0067] Referring to Figure 1 As shown in the figure, the embodiment of the application provides a load switch, which comprises a shell 102, a coil assembly 103, a movable contact 107, a static contact 116 and the above-mentioned transmission structure; the coil assembly 103 drives the armature assembly 100 to move in the shell 102, and drives the movable contact 107 to open and close movement through the transmission rod 101.

[0068] Among them, referring to Figure 4As shown, the moving contact 107 is rotatably mounted on the shell 102 at one end, and is provided with a contact and a connecting portion 113 at the other end; the second end 106 of the transmission rod 101 is hingedly connected to the connecting portion 113; and the moving contact lead-out sheet 114 and the flexible member are further included; one end of the flexible member is connected to the moving contact lead-out sheet 114, and the other end is connected to the rotating end of the moving contact 107.

[0069] It should be noted that the contact and the connecting portion 113 are respectively arranged on both sides of the extension direction of the moving contact 107. Among them, the contact is used to abut and close with the static contact provided on the static contact 116.

[0070] It should be noted that the end of the flexible member is connected to the rotating end of the moving contact 107 in the embodiment of the application, so that the flexible member is closer to the rotating center of the moving contact 107, which is beneficial to reduce the stress generated by the movement of the flexible member. Therefore, the design of the flexible member in the embodiment of the application ensures that even in the case of frequent rotation of the moving contact 107, good electrical connection can be maintained, and the problem of open circuit or poor contact caused by mechanical movement is avoided.

[0071] The load switch provided by the embodiment of the application can realize efficient opening and closing operation. The coil assembly 103 rotates in the shell 102 by driving the armature assembly 100, and then drives the moving contact 107 to complete the opening and closing movement through the transmission rod 101.

[0072] Among them, the setting of the elastic element and the suction-assisting elastic member 112 can ensure the efficiency and accuracy of the operation. The suction-assisting elastic member 112 can provide additional closing assistance at the initial stage of the closing action, which can improve the closing speed. Through optimization design, the direct stress between the key components is reduced, and the wear risk of these components is reduced, thereby prolonging the service life of the entire device.

[0073] Referring to Figure 4 As an optional implementation, the arc extinguishing assembly 115 is further included, which is arranged close to the static contact 116. The arc extinguishing assembly 115 includes a U-shaped arc extinguishing chamber and a plurality of arc extinguishing sheets arranged at intervals and inserted into the two side plates of the U-shaped arc extinguishing chamber. The arrangement direction of the plurality of arc extinguishing sheets is consistent with the extension direction of the static contact 116.

[0074] It should be noted that the opening formed by the moving contact 107 and the static contact 116 of the static contact is directed to the arc extinguishing assembly 115.

[0075] It should be noted that the arrangement direction of the arc extinguishing sheets of the arc extinguishing assembly 115 and the extension path of the static contact 116 can be arranged on a straight line according to needs.

[0076] Referring to Figure 4As shown, as an optional embodiment, the arc extinguishing assembly 115 is arranged close to the connecting portion 113, and an arc striking sheet is arranged close to the static contact 116 in the arc extinguishing assembly 115 to facilitate arc striking.

[0077] It should be noted that the moving contact arc striking sheet 114 and the static contact are connected with the wiring row outside the shell 102, and the wiring row is electrically connected with the wiring terminal of the external equipment.

[0078] The above arrangement of the embodiment of the application is beneficial to improving the compactness of assembly, thereby reducing the volume of the entire switch.

[0079] Referring to Figure 4 As an optional embodiment, the first magnetic enhancement member 117 is arranged on the side of the moving contact 107 away from the static contact 116, and / or the second magnetic enhancement member 118 is arranged at the moving contact arc striking sheet 114, which can be arranged separately or simultaneously.

[0080] Preferably, the second magnetic enhancement member 118 is in two pieces and has a split structure, and the two second magnetic enhancement members 118 can cooperate to form a U-shaped structure. Referring to Figure 4 As shown, in the closed position, part of the structure of the moving contact arc striking sheet 114 and part of the structure of the moving contact 107 pass through the middle of the U-shaped structure, forming a strong attraction effect. In addition, the U-shaped structure formed by the two second magnetic enhancement members 118 is convenient to install.

[0081] Referring to Figure 5 As shown, the opening direction of the U-shaped structure formed by the two second magnetic enhancement members 118 is away from the moving contact 107, and the moving contact arc striking sheet 114 is arranged in the U-shaped structure.

[0082] Preferably, the first magnetic enhancement member 117 and the second magnetic enhancement member 118 are arranged simultaneously and oppositely. It should be noted that the first magnetic enhancement member 117 of the embodiment of the application is in a sheet structure, which is attached to the surface of the moving contact 107 and does not occupy a large installation space. In addition, the second magnetic enhancement member 118 is installed on both sides of the moving contact 107 and is also in a sheet structure.

[0083] The arrangement of the first magnetic enhancement member 117 and the second magnetic enhancement member 118 significantly enhances the attraction force between the moving contact 107 and the static contact, ensuring that the two can be in close contact when closed. This design of the embodiment of the application reduces the operation failure caused by poor contact and improves the reliability of the system. The enhanced attraction force helps to reduce the rebound phenomenon of the moving contact 107 after contacting the static contact, ensuring the stability and consistency of the contact.

[0084] The enhanced attraction force makes the moving contact 107 and the static contact 116 not easily repel, thereby improving the short-circuit current resistance of the load switch.

[0085] The above descriptions are only the preferred embodiments of the present application, and are not intended to limit the present application. The present application can have various modifications and changes for those skilled in the art. Any modifications, equivalent replacements, improvements, 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 transmission structure configured in a load switch, characterized by, The transmission structure comprises an armature assembly (100), a transmission rod (101) and an elastic element; the armature assembly (100) is movably mounted in a housing (102) of a load switch and is driven by a coil assembly (103) of the load switch; a sliding groove (104) is arranged on the armature assembly (100); a first end (105) of the transmission rod (101) is inserted into the sliding groove (104), and a second end (106) is used for being connected with a movable contact (107); the elastic element connects the armature assembly (100) and the transmission rod (101); when the transmission rod (101) drives the movable contact (107) to close under the drive of the armature assembly (100) and the coil assembly (103), the elastic element is deformed to provide contact pressure for the movable contact (107), and the first end (105) moves in the sliding groove (104) to provide contact overtravel for the movable contact (107).

2. The transmission arrangement of claim 1, wherein, The armature assembly (100) comprises a rotating part (108) and an extension part (109); the rotating part (108) is close to the coil assembly (103), one end of the extension part (109) is connected with the rotating part (108), and the other end extends away from the coil assembly (103); the sliding groove (104) is arranged on the extension part (109), and the length of the sliding groove (104) is greater than or equal to the contact overtravel.

3. The transmission arrangement of claim 2, wherein, The elastic element comprises a torsion spring element (110); a rotating shaft (111) is arranged on the extension part (109), the torsion spring element (110) is arranged on the rotating shaft (111), and one end of the torsion spring element (110) abuts against the armature assembly (100), and the other end abuts against the first end (105) of the transmission rod (101).

4. The transmission arrangement of claim 3, wherein, The elastic element is arranged on one side of the extension part (109) close to or away from the bottom of the housing (102), the armature assembly (100) further comprises a first limiting part (119) and a second limiting part (120), one end of the torsion spring element (110) abuts against the first limiting part (119), and the other end can abut against the second limiting part (120), so as to realize the installation and positioning of the torsion spring element (110) when the transmission rod (101) is not installed.

5. The transmission arrangement of claim 1, wherein, One end of the movable contact (107) is rotatably mounted on the housing (102), the other end is provided with a contact and a connecting part (113) and is arranged on two sides of the movable contact (107); the second end (106) of the transmission rod (101) is hingedly connected with the connecting part (113).

6. The transmission arrangement of claim 1, wherein, Further comprising an auxiliary suction elastic element (112); the auxiliary suction elastic element (112) and the movable contact (107) are arranged on two sides of the extension part (109) respectively; In the open position, one side of the extension part (109) away from the movable contact (107) abuts against the auxiliary suction elastic element (112), the auxiliary suction elastic element (112) is deformed to store energy and generate an acting force acting on the extension part (109), so as to assist the movable contact (107) to close.

7. A load break switch characterized by The drive structure comprises a shell (102), a coil assembly (103), a moving contact (107), a static contact (116), and the drive structure of any one of claims 1-6; the coil assembly (103) moves in the shell (102) through a driving armature assembly (100) and drives the moving contact (107) to open and close through a transmission rod (101).

8. The load switch of claim 7, wherein, The drive structure further comprises a moving contact leading-out sheet (114) and a flexible member; one end of the flexible member is connected to the moving contact leading-out sheet (114), and the other end is connected to a rotating end of the moving contact (107).

9. The load switch of claim 7, wherein, The drive structure further comprises an arc extinguishing assembly (115) arranged close to the static contact (116); the arc extinguishing assembly (115) comprises a U-shaped arc extinguishing chamber and a plurality of arc extinguishing sheets arranged at intervals and inserted into two side plates of the U-shaped arc extinguishing chamber.

10. The load switch of claim 8, wherein, The moving contact (107) is provided with a first magnetic enhancement member (117) on a side away from the static contact (116), and / or the moving contact leading-out sheet (114) is provided with a second magnetic enhancement member (118) on a side away from the moving contact (107).

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