Contact system and automatic change-over switch

Abstract

The utility model belongs to the technical field of low-voltage electric appliances, and discloses a contact system and an automatic change-over switch. The contact system comprises a moving contact assembly, the moving contact assembly comprises a spring piece structure and two contact plates, the spring piece structure comprises a connecting piece and two contact pieces, the two contact pieces are oppositely arranged, the two ends of the connecting piece are connected to the two contact pieces respectively to form an installation cavity, the two contact plates are arranged in the installation cavity, the connecting piece supports the contact plates, and the contact plates are arranged in the installation cavity. The middle parts of the two contact plates are contacted, so that the two ends of the contact plates are respectively propped against the two ends of the contact pieces corresponding to the contact plates, and the opposite end parts of the two contact plates are arranged at intervals. The spring piece structure is integrally formed, so that the number of parts is reduced, pre-installation of the spring piece structure and the two contact plates is realized, the installation steps are simplified, the production efficiency is improved, the consistency of the two contact pieces when the moving contact assembly is installed is also improved, and the reliability of the spring piece structure is improved.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage electrical technology, and in particular to a contact system and an automatic transfer switch. Background Technology

[0002] An automatic transfer switch is a low-voltage electrical device that automatically switches between two or more power sources via electric or manual operation. In the contact system of an automatic transfer switch, the corresponding moving contact and stationary contact make the switch closed, while the corresponding moving contact and stationary contact opening makes the switch open.

[0003] The existing moving contact structure includes a fixed shaft, two contact plates, and two spring plates. The two contact plates are spaced apart to form a gap to accommodate the stationary contact. Spring plates are located on the outer sides of each contact plate, providing support to ensure sufficient contact area between the contact plates and the stationary contact, reducing poor contact and improving connection stability. However, during installation, both contact plates and spring plates require positioning via the fixed shaft. The inability of the contact plates and spring plates to automatically position themselves makes the installation process cumbersome and inefficient. Furthermore, due to machining errors in various components, inconsistencies in installation may occur, reducing product reliability.

[0004] Therefore, there is an urgent need for a contact system and an automatic transfer switch to solve the above-mentioned technical problems. Utility Model Content

[0005] One objective of this invention is to provide a contact system that simplifies installation steps, improves installation consistency, and enhances product reliability.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] The contact system includes a moving contact assembly, which comprises a spring sheet structure and two contact plates.

[0008] The aforementioned spring sheet structure includes a connecting piece and two contact pieces. The two contact pieces are arranged opposite to each other. The two ends of the connecting piece are respectively connected to the two contact pieces and form a mounting cavity. The two contact plates are disposed in the mounting cavity, and the connecting piece supports the contact plates. The middle parts of the two contact plates are in contact, so that the two ends of the contact plates abut against the two ends of the contact pieces corresponding to the contact plates. The opposite ends of the two contact plates are spaced apart.

[0009] The beneficial effects of this contact system are that by dividing the spring plate structure into a connecting piece and two contact pieces, with the connecting piece connecting the two contact pieces, the spring plate structure forms an integrally molded structure with a mounting cavity. This allows for direct installation of the two contact plates into the mounting cavity of the spring plate structure during the installation of the moving contact assembly. The connecting piece supports the contact plates, the two contact plates make contact at their midpoints, and each contact plate's ends are abutted by the ends of its corresponding contact piece, thus providing support and abutment. Simultaneously, it simplifies the number of parts, enables pre-installation of the spring plate structure and the two contact plates, simplifies the installation process, and improves production efficiency. Furthermore, the integral molding of the spring plate structure improves the consistency between the two contact pieces during the installation of the moving contact assembly, enhancing the reliability of the spring plate structure.

[0010] Optionally, the connecting piece has a partition protruding on the side facing the mounting cavity, the partition dividing the mounting cavity into two sub-chambers, each of the sub-chambers being provided with the contact plate, and the contact plate abutting against the partition.

[0011] Optionally, the connecting piece includes two pieces, one end of which is connected to the corresponding contact piece, and the other ends of the two pieces extend toward each other and are spaced apart. The separating portion includes two spacers, which are disposed between the two pieces, one end of which is connected to the other end of which is connected to the other end of the corresponding piece.

[0012] Optionally, the contact piece includes a connecting portion and two abutting portions. The connecting portion is connected to the connecting piece, and the two abutting portions are respectively connected to the two ends of the connecting portion. Limiting grooves are formed at both ends of the contact plate, and the abutting portions are placed in the limiting grooves and abut against the bottom of the limiting grooves.

[0013] Optionally, the contact system further includes a rotating shaft with a mounting base. The mounting base has a mounting groove, and at least one of the two oppositely arranged groove walls of the mounting groove has a limiting protrusion that engages with the contact piece.

[0014] Optionally, the moving contact assembly further includes a fixed shaft, which is sequentially disposed through one of the contact pieces, two of the contact plates and another contact piece, and the two ends of the fixed shaft are respectively slidably connected to the two groove walls of the mounting groove.

[0015] Optionally, both walls of the mounting groove are provided with sliding grooves, which are connected to the end face of the mounting groove. The two ends of the fixed shaft are slidably connected to the side walls of the two sliding grooves respectively.

[0016] Optionally, the above-mentioned spring sheet structure further includes a first riveting part, which is connected to the side of the contact piece facing the bottom of the mounting groove or the connecting piece. The bottom of the mounting groove is provided with a second riveting part, and the first riveting part and the second riveting part are riveted together.

[0017] Optionally, the first riveting part includes a riveting piece, which is connected to the side of the contact piece facing the bottom of the mounting groove or the side of the connecting piece facing the bottom of the mounting groove. The bottom of the mounting groove has an insertion hole, the riveting piece is inserted into the insertion hole, and one end of the riveting piece extending out of the insertion hole is bent to form a riveting angle, which is riveted to the outer wall of the bottom of the mounting groove.

[0018] Optionally, the first riveting part includes a riveting hole, which is formed in the contact piece or the connecting piece. A riveting post protrudes from the bottom of the mounting groove, and the riveting post is inserted into the riveting hole and thermally riveted to the connecting piece.

[0019] Another objective of this invention is to provide an automatic transfer switch that simplifies installation steps, improves installation consistency, and enhances product reliability.

[0020] To achieve this objective, the present invention adopts the following technical solution:

[0021] An automatic changeover switch includes a base, an operating mechanism, and the aforementioned contact system. Both the contact system and the operating mechanism are disposed within the base. The operating mechanism is used to drive the moving contact assembly of the contact system to rotate.

[0022] The beneficial effects of this automatic transfer switch are that by adopting an integrated spring sheet structure, the manufacturing process of the contact system is simplified and production efficiency is improved; it also improves the consistency between the two contact sheets when the moving contact assembly is installed, and improves the reliability of the spring sheet structure. Attached Figure Description

[0023] Figure 1 This is an isometric view of the moving contact assembly provided in an optional embodiment of the present invention;

[0024] Figure 2 This is an isometric view of the spring sheet structure provided in an optional embodiment of this utility model;

[0025] Figure 3 This is an isometric view of the spring sheet structure provided in another optional embodiment of the present invention;

[0026] Figure 4 This is a front view of a spring sheet structure provided in an optional embodiment of the present invention;

[0027] Figure 5 This is an isometric view of the contact system provided in an optional embodiment of the present invention. Figure 1 ;

[0028] Figure 6 yes Figure 5 A magnified view of a section at point A in the middle;

[0029] Figure 7 This is an isometric view of the rotating shaft provided in an optional embodiment of the present invention;

[0030] Figure 8 This is a top view of a contact system provided in an optional embodiment of the present invention;

[0031] Figure 9 This is a top view of the contact system provided in another optional embodiment of the present invention;

[0032] Figure 10 This is an isometric view of the contact system provided in an optional embodiment of the present invention. Figure 2 ;

[0033] Figure 11 This is an isometric view of an automatic transfer switch provided in an optional embodiment of this utility model.

[0034] In the picture:

[0035] 1. Spring sheet structure; 101. Mounting cavity; 1011. Divided chamber; 102. Mounting hole; 110. Connecting piece; 111. Separator; 1111. Partition; 112. Sheet body; 120. Contact piece; 121. Connecting part; 122. Abutting part; 130. Riveting piece; 131. Riveting angle; 140. Riveting hole;

[0036] 2. Contact plate; 201. Limiting groove;

[0037] 3. Fixed shaft;

[0038] 4. Rotating shaft; 410. Mounting base; 411. Mounting groove; 412. Limiting protrusion; 413. Sliding groove; 414. Insertion hole; 415. Riveting post;

[0039] 1000, Contact system; 2000, Base; 3000, Operating mechanism. Detailed Implementation

[0040] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0041] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0043] In the description of this embodiment, the terms "upper," "lower," "left," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0044] The following reference Figures 1 to 11 This invention introduces the contact system 1000 and the automatic transfer switch provided by this utility model.

[0045] This embodiment provides a contact system 1000, which provides effective support for the contact plates 2 by setting the spring sheet structure 1 as an integrally formed structure for pre-positioning the two contact plates 2, and is convenient to install and highly reliable.

[0046] Please refer to Figures 1 to 4Specifically, the contact system 1000 includes a moving contact assembly, which includes a spring sheet structure 1 and two contact plates 2. The spring sheet structure 1 includes a connecting piece 110 and two contact pieces 120. The two contact pieces 120 are arranged opposite to each other. The two ends of the connecting piece 110 are respectively connected to the two contact pieces 120 and form a mounting cavity 101. The two contact plates 2 are disposed in the mounting cavity 101, and the connecting piece 110 supports the contact plates 2. The middle parts of the two contact plates 2 are in contact, so that the two ends of the contact plates 2 respectively abut against the two ends of the contact pieces 120 corresponding to the contact plates 2. The opposite ends of the two contact plates 2 are spaced apart.

[0047] The contact system 1000 in this embodiment is composed of a spring sheet structure 1 consisting of a connecting piece 110 and two contact pieces 120. The connecting piece 110 connects the two contact pieces 120, making the spring sheet structure 1 an integrally formed structure with a mounting cavity 101. This allows the two contact plates 2 to be directly installed into the mounting cavity 101 of the spring sheet structure 1 during the installation of the moving contact assembly. At this time, the connecting piece 110 supports the contact plates 2, the two contact plates 2 are in contact at the middle, and the two ends of each contact plate 2 are respectively abutted by the two ends of the corresponding contact piece 120, thus achieving abutment and support for the contact plates 2. Simultaneously, it simplifies the number of parts, enables pre-installation of the spring sheet structure 1 and the two contact plates 2, simplifies the installation steps, and improves production efficiency. Furthermore, the integral molding of the spring sheet structure 1 also improves the consistency between the two contact pieces 120 during the installation of the moving contact assembly, thus improving the reliability of the spring sheet structure 1.

[0048] Please refer to Figures 2 to 4 Specifically, the contact piece 120 includes a connecting part 121 and two abutting parts 122. The connecting part 121 is connected to the connecting piece 110, and the two abutting parts 122 are respectively connected to the two ends of the connecting part 121 and abut against the two ends of the corresponding contact plate 2, so as to realize the abutting connection between the contact piece 120 and the contact plate 2.

[0049] More specifically, limit grooves 201 are provided at both ends of the contact plate 2, and the abutment portion 122 is placed in the limit groove 201 and abuts against the bottom of the limit groove 201. The setting of the limit groove 201 also increases the limitation of the abutment portion 122 of the contact piece 120, thereby avoiding misalignment or other problems when the abutment portion 122 abuts against the contact plate 2, and improving the reliability of the installation of the spring sheet structure 1 and the contact plate 2.

[0050] Optionally, the end of the abutment portion 122 away from the connecting portion 121 is inclined toward another contact piece 120, so that the abutment portion 122 abuts against the contact plate 2, and the connecting portion 121 is used for installation and positioning with the mounting base 410 in the contact system 1000.

[0051] Optionally, the connecting piece 110 has a partition 111 protruding on the side facing the mounting cavity 101. The partition 111 divides the mounting cavity 101 into two sub-cavities 1011. Each sub-cavity 1011 is provided with a contact plate 2, and the contact plate 2 abuts against the partition 111. This can realize the installation and positioning of the two contact plates 2, and also ensure that each contact plate 2 can be pressed against by the partition 111 and the corresponding contact piece 120, thereby realizing the pre-fixation and pre-support of each contact plate 2.

[0052] Specifically, the connecting piece 110 includes two pieces 112, one end of which is connected to the corresponding contact piece 120. The other ends of the two pieces 112 extend towards each other and are spaced apart. The separating part 111 includes two spacers 1111, which are disposed between the two pieces 112. One end of the two spacers 1111 is connected to each other, and the other end of the spacers 1111 is connected to the other end of the corresponding piece 112. This arrangement not only achieves the separation and installation positioning of the contact plates 2, but also makes the connecting piece 110 more elastic, thereby helping to firmly support the two contact plates 2.

[0053] To further improve the connection between the two contact pieces 120 and the two contact plates 2, optionally, the contact piece 120 is provided with a mounting hole 102, and the contact plate 2 is provided with a corresponding through hole. By passing a fixed shaft 3 through the mounting hole 102 of one contact piece 120, the through hole of the two contact plates 2 and the mounting hole 102 of the other contact piece 120 in sequence, the connection between the two contact pieces 120 and the two contact plates 2 can be further improved.

[0054] Furthermore, the middle part of the contact plate 2 is provided with a protrusion, and the protrusions in the middle of the two contact plates 2 contact each other. This not only enables the two contact plates 2 to make contact between them, so that the two contact plates 2 and the two contact pieces 120 of the spring plate structure 1 cooperate with each other to realize the pre-installation of the spring plate structure 1 on the two contact plates 2, but also ensures that a gap for connecting the stationary contact is formed between the two contact plates 2.

[0055] Please refer to Figures 5 to 7 The contact system 1000 also includes a rotating shaft 4, on which a mounting base 410 is provided. The moving contact assembly is placed in the mounting base 410 to realize the installation of the moving contact assembly, thereby realizing the control of the opening and closing of the switch circuit.

[0056] It should be noted that the number of moving contact assembly and mounting base 410 can be set to one, two or more according to actual needs, so as to achieve simultaneous control of opening and closing of different numbers of switch circuits.

[0057] Specifically, the mounting base 410 has a mounting groove 411. At least one of the two opposing groove walls of the mounting groove 411 has a limiting protrusion 412. The limiting protrusion 412 engages with the contact piece 120, so that the moving contact assembly is connected within the mounting groove 411. That is, after the moving contact assembly is installed, during the process of installing it into the mounting groove 411, the moving contact assembly is first pressed downward from the opening of the mounting groove 411, so that at least one contact piece 120 of the spring sheet structure 1 contacts the limiting protrusion 412 and undergoes slight deformation. This reduces the distance between the two contact pieces 120, allowing the moving contact assembly to pass over the limiting protrusion 412 and be installed into the mounting groove 411. Then, the contact piece 120 returns to its original position based on its elasticity and engages with the limiting protrusion 412, thereby achieving the installation limitation of the moving contact assembly.

[0058] Optionally, the limiting protrusion 412 has a guide slope on the side facing the groove of the mounting groove 411 to guide the installation of the moving contact assembly.

[0059] Please return to the reference. Figure 1 Furthermore, the moving contact assembly also includes a fixed shaft 3, which is sequentially inserted through one contact piece 120, two contact plates 2 and another contact piece 120, thereby achieving further positioning and fixing between the contact plates 2 and the contact pieces 120.

[0060] Please refer to Figures 7 to 9 Specifically, the fixed shaft 3 is slidably connected to the wall of the mounting groove 411, so that during installation, the moving contact assembly can be guided and limited by the sliding cooperation between the fixed shaft 3 and the wall of the mounting groove 411. At the same time, the fixed shaft 3 is limited by the wall of the mounting groove 411, eliminating the need to rivet the fixed shaft 3 to the spring sheet structure 1, simplifying the production process and improving assembly convenience and production efficiency.

[0061] More specifically, both groove walls are provided with sliding grooves 413, which are connected to the end faces of the mounting grooves 411. The two ends of the fixed shaft 3 are slidably connected to the side walls of the two sliding grooves 413 respectively. During installation, the fixed shaft 3 is placed in the sliding groove 413, and the sliding of the fixed shaft 3 and the sliding groove 413 guides the installation of the moving contact assembly. At the same time, the cooperation between the fixed shaft 3 and the sliding groove 413 also limits its movement. Thus, the limiting protrusion 412 limits the spring sheet structure 1, and the sliding groove 413 limits the fixed shaft 3, thereby achieving the installation and positioning of the moving contact assembly by the mounting base 410. No additional installation steps for fixing are required, thus simplifying the production process.

[0062] Optionally, the number of fixed shafts 3 can be set to one, two, or more according to actual needs to improve the fixing effect of the moving contact assembly. Correspondingly, the number of sliding grooves 413 on the groove wall of each mounting groove 411 can also be set to one, two, or more, thereby realizing a one-to-one sliding connection with the fixed shafts 3.

[0063] To further secure the moving contact assembly and the mounting base 410, ensuring stable movement without wobbling when the moving contact assembly moves with the rotating shaft 4 after installation, alternatively, the moving contact assembly and the mounting base 410 can be secured by other methods, such as riveting, bolting, or bonding, without specific limitations.

[0064] Specifically, the spring sheet structure 1 also includes a first riveting part, which is connected to the contact piece 120 or the connecting piece 110. The bottom of the mounting groove 411 is provided with a second riveting part, and the first riveting part and the second riveting part are riveted together. Through the riveting connection between the two, the moving contact assembly and the mounting base 410 can be further fixed, improving the stability of the connection between the two.

[0065] Please refer to Figure 3 and Figure 10 Specifically, in an optional embodiment, the first riveting part includes a riveting piece 130. The riveting piece 130 is connected to the side of the contact piece 120 facing the bottom of the mounting groove 411. The bottom of the mounting groove 411 has an insertion hole 414. The riveting piece 130 is inserted into the insertion hole 414, and one end of the riveting piece 130 extending out of the insertion hole 414 is bent to form a riveting angle 131. The riveting angle 131 is riveted to the outer wall of the bottom of the mounting groove 411, thereby realizing the riveting and fixing connection between the moving contact assembly and the mounting base 410 on the back, and the connection is more stable.

[0066] In another optional embodiment, the first riveting part includes a riveting piece 130, which is connected to the side of the connecting piece 110 facing the bottom of the mounting groove 411. The bottom of the mounting groove 411 has an insertion hole 414, and the riveting piece 130 is inserted into the insertion hole 414. The end of the riveting piece 130 extending out of the insertion hole 414 is bent to form a riveting angle 131, which is riveted to the outer wall of the bottom of the mounting groove 411. This achieves a riveting and fixing connection between the moving contact assembly and the mounting base 410 on the back, and the connection is more stable.

[0067] Since the extension direction of the contact piece 120 is similar to that of the rivet piece 130, it can extend directly outward from the side of the contact piece 120 facing the bottom of the mounting groove 411. Therefore, in this embodiment, the rivet piece 130 is connected to the side of the contact piece 120 facing the bottom of the mounting groove 411, which makes it easier to process and shape the rivet piece 130.

[0068] Optionally, multiple riveting tabs 130 and insertion holes 414 are provided in a one-to-one correspondence, which can increase the stability of the connection between the moving contact assembly and the mounting base 410.

[0069] Please refer to Figure 2 and Figure 9 Specifically, in an optional embodiment, the first riveting part includes a riveting hole 140, which is formed in the connecting piece 110. A riveting post 415 is protruding from the bottom of the mounting groove 411. The riveting post 415 is inserted into the riveting hole 140 and thermally riveted to the connecting piece 110. This allows for a front-end riveting and fixing connection between the moving contact assembly and the mounting base 410, eliminating the need for riveting on the other side. This is more convenient and provides a more stable connection.

[0070] In another optional embodiment, the first riveting part includes a riveting hole 140, which is formed in the contact piece 120. Specifically, the contact piece 120 has a fixing part formed by bending towards the mounting cavity 101 on the side facing the bottom of the mounting groove 411. The riveting hole 140 is formed in the fixing part. A riveting post 415 is protruding from the bottom of the mounting groove 411. The riveting post 415 is inserted into the riveting hole 140 and thermally riveted to the connecting piece 110. This achieves a front-end riveting and fixing connection between the moving contact assembly and the mounting base 410, eliminating the need for riveting on the other side, which is more convenient and provides a more stable connection.

[0071] To facilitate the forming of the riveting hole 140, the riveting hole 140 can optionally be formed on the connecting piece 110, so that the riveting hole 140 can be directly formed on the two pieces 112 of the connecting piece 110 without adding a fixing part on the contact piece 120, which makes it easier to form the riveting hole 140.

[0072] Optionally, multiple riveting holes 140 and riveting posts 415 are provided in a one-to-one correspondence, which can increase the connection stability between the moving contact assembly and the mounting base 410.

[0073] Of course, to further improve the connection strength between the moving contact assembly and the mounting base 410, in other optional embodiments, the spring sheet structure 1 includes a riveting piece 130 and a riveting hole 140; the bottom of the mounting groove 411 is provided with an insertion hole 414 and a riveting post 415, the riveting piece 130 is connected to the contact piece 120, the riveting hole 140 is opened in the connecting piece 110, the riveting piece 130 is inserted into the insertion hole 414 and riveted to the outer wall of the bottom of the mounting groove 411, and the riveting post 415 is inserted into the riveting hole 140 and thermally riveted to the connecting piece 110. This double riveting structure can further improve the connection stability between the spring sheet structure 1 and the mounting base 410 while achieving the fixation of the spring sheet structure 1.

[0074] Please refer to Figure 11This embodiment also provides an automatic changeover switch, which includes a base 2000, an operating mechanism 3000, and a contact system 1000 as described in any of the above embodiments. Both the contact system 1000 and the operating mechanism 3000 are disposed within the base 2000. The operating mechanism 3000 is used to drive the moving contact assembly of the contact system 1000 to rotate. By employing an integrally molded spring sheet structure 1, the manufacturing process of the contact system 1000 is simplified, and production efficiency is improved; it also improves the consistency between the two contact pieces 120 when the moving contact assembly is installed, thereby improving the reliability of the spring sheet structure 1.

[0075] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A contact system, characterized in that The moving contact assembly comprises a spring sheet structure (1) and two contact plates (2), The spring sheet structure (1) comprises a connecting sheet (110) and two contact sheets (120), the two contact sheets (120) are oppositely arranged, the two ends of the connecting sheet (110) are connected to the two contact sheets (120) respectively, and a mounting cavity (101) is formed, the two contact plates (2) are arranged in the mounting cavity (101), and the connecting sheet (110) supports the contact plates (2), the middle parts of the two contact plates (2) are in contact, the two ends of the contact plates (2) respectively abut against the two ends of the contact sheets (120) corresponding to the contact plates (2), and the opposite ends of the two contact plates (2) are arranged at intervals.

2. The contact system of claim 1, wherein, The side of the connecting sheet (110) facing the mounting cavity (101) is provided with a partition (111), the partition (111) equally divides the mounting cavity (101) into two sub-chambers (1011), each of the sub-chambers (1011) is provided with the contact plate (2), and the contact plate (2) abuts against the partition (111).

3. The contact system of claim 2, wherein, The connecting sheet (110) comprises two sheet bodies (112), one end of the sheet body (112) is connected to the corresponding contact sheet (120), the other ends of the two sheet bodies (112) extend towards each other and are arranged at intervals, the partition (111) comprises two partition sheets (1111), the two partition sheets (1111) are arranged between the two sheet bodies (112), one end of the two partition sheets (1111) is connected, and the other end of the partition sheet (1111) is connected to the other end of the corresponding sheet body (112).

4. The contact system of claim 1, wherein, The contact sheet (120) comprises a connecting portion (121) and two abutting portions (122), the connecting portion (121) is connected to the connecting sheet (110), the two abutting portions (122) are connected to the two ends of the connecting portion (121) respectively, the two ends of the contact plate (2) are provided with limiting grooves (201), and the abutting portions (122) are arranged in the limiting grooves (201) and abut against the groove bottoms of the limiting grooves (201).

5. The contact system of claim 1, wherein, The contact system (1000) further comprises a rotating shaft (4), the rotating shaft (4) is provided with a mounting seat (410), the mounting seat (410) is provided with a mounting groove (411), at least one of the two opposite groove walls of the mounting groove (411) is provided with a limiting protrusion (412), and the limiting protrusion (412) is connected with the contact sheet (120).

6. The contact system of claim 5, wherein, The moving contact assembly further comprises a fixing shaft (3), the fixing shaft (3) is sequentially arranged in one of the contact sheets (120), the two contact plates (2) and the other contact sheet (120), and the two ends of the fixing shaft (3) are respectively connected to the two groove walls of the mounting groove (411).

7. The contact system of claim 6, wherein, Two groove walls of the mounting groove (411) are provided with sliding grooves (413) penetrating the groove opening end surface of the mounting groove (411), and two ends of the fixed shaft (3) are respectively slidably connected to the side walls of the two sliding grooves (413).

8. The contact system of any of claims 5-7, wherein, The spring sheet structure (1) further comprises a first riveting part connected to the contact sheet (120) or the connecting sheet (110), and the groove bottom of the mounting groove (411) is provided with a second riveting part, and the first riveting part and the second riveting part are riveted and connected.

9. The contact system of claim 8, wherein, The first riveting part comprises a riveting sheet (130) connected to one side of the contact sheet (120) or one side of the connecting sheet (110) facing the groove bottom of the mounting groove (411), the groove bottom of the mounting groove (411) is provided with an insertion hole (414), the riveting sheet (130) is inserted into the insertion hole (414), and one end of the riveting sheet (130) protruding out of the insertion hole (414) is bent to form a riveting corner (131), and the riveting corner (131) is riveted to the outer wall of the groove bottom of the mounting groove (411).

10. The contact system of claim 8, wherein, The first riveting part comprises a riveting hole (140) provided in the contact sheet (120) or the connecting sheet (110), the groove bottom of the mounting groove (411) is provided with a riveting column (415), the riveting column (415) is inserted into the riveting hole (140) and is hot riveted to the connecting sheet (110).

11. An automatic transfer switch characterized in that, The contact system (1000) and the operating mechanism (3000) are arranged in the base (2000), and the operating mechanism (3000) is used for driving the movable contact assembly of the contact system (1000) to rotate.

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