Dual-power change-over switch with arc-isolating rotating plate

Abstract

The utility model discloses a dual-power change-over switch with an arc-isolating rotating plate, and the switch comprises a body which is provided with an accommodation cavity; the moving contact is accommodated in the accommodating cavity and comprises a first contact part and a second contact part; the first static contact, the second static contact and the third static contact are accommodated in the accommodating cavity; the first arc-isolating rotating plate rotates relative to the accommodating cavity, the first arc-isolating rotating plate is provided with a first arc-isolating plate, and the first arc-isolating plate is located between the first static contact and the second static contact; the second arc-isolating rotating plate rotates relative to the accommodating cavity, the second arc-isolating rotating plate is provided with a second arc-isolating plate, and the second arc-isolating plate is located between the second static contact and the third static contact; when the moving contact rotates, the arc-isolating rotating plate is driven to rotate, so that the arc-isolating rotating plate separates the electric arc generated between the contact part and the static contact, and the arc extinguishing and arc extinguishing effects are realized. Compared with an arc extinguishing assembly in the prior art, the arc extinguishing assembly is simpler in structure, low in production cost and capable of meeting the arc extinguishing effect and improving the market competitiveness of products.

Description

Technical Field

[0001] The utility model specifically relates to a dual-power supply conversion switch with an arc isolation rotating plate. Background Art

[0002] During the switching process of the dual power conversion switch, an arc will be generated between the moving contact and the static contact. The existing dual power conversion switch is equipped with an arc extinguishing component, and the arc can be extinguished by the arc extinguishing component.

[0003] However, due to market competition, the profit of the product has gradually decreased. Therefore, it is proposed to omit the arc extinguishing component to achieve the effect of reducing costs. The subsequent problem is how to achieve the arc extinguishing effect through a low-cost structure to prevent the contact from burning. Utility Model Content

[0004] The utility model mainly solves the technical problem of providing a dual power supply conversion switch with an arc isolation rotating plate.

[0005] The technical solution adopted by the utility model to solve the technical problem is: a dual power supply transfer switch with an arc isolation rotating plate, which includes:

[0006] A main body, wherein the main body is provided with a receiving cavity;

[0007] A moving contact, the moving contact is accommodated in the accommodating cavity, the moving contact comprises a first contact part and a second contact part, and the moving contact rotates in cooperation with the operating mechanism;

[0008] A first stationary contact, the first stationary contact is accommodated in the accommodating cavity;

[0009] A second stationary contact, the second stationary contact is accommodated in the accommodating cavity;

[0010] A third static contact, the third static contact is accommodated in the accommodating cavity, and the first static contact, the second static contact and the third static contact are all located on the motion track of the moving contact;

[0011] A first arc-isolating rotating plate, the first arc-isolating rotating plate is accommodated in the accommodating cavity, and the first arc-isolating rotating plate rotates relative to the accommodating cavity, the first arc-isolating rotating plate is provided with a first arc-isolating plate, and the first arc-isolating plate is located between the first static contact and the second static contact;

[0012] A second arc-isolating rotating plate, the second arc-isolating rotating plate is accommodated in the accommodating cavity, and the second arc-isolating rotating plate rotates relative to the accommodating cavity, the second arc-isolating rotating plate is provided with a second arc-isolating plate, and the second arc-isolating plate is located between the second static contact and the third static contact;

[0013] The first arc isolation rotating plate and the second arc isolation rotating plate are independently arranged, and both the first arc isolation rotating plate and the second arc isolation rotating plate are located on the movement track of the moving contact.

[0014] With this structural setting, when the moving contact rotates, it drives the arc isolation rotating plate to rotate, so that the arc isolation rotating plate separates the arc generated between the contact part and the static contact, thereby achieving the effect of arc extinguishing and arc extinction. Compared with the arc extinguishing components in the prior art, this structure is simpler, with low production cost, can meet the arc extinguishing effect, and improve the market competitiveness of the product.

[0015] Among them, the first arc isolation rotating plate includes a first leg and a second leg, and the first leg and the second leg are located on the movement trajectory of the first contact part; the second arc isolation rotating plate includes a third leg and a fourth leg, and the third leg and the fourth leg are located on the movement trajectory of the second contact part.

[0016] The first leg, the second leg, the third leg, and the fourth leg are set to achieve a better driving effect. In addition, only one leg can be set to achieve a reset effect through a reset tool such as a torsion spring.

[0017] The first support leg and the first arc isolation plate are located on the same plane, and the fourth support leg and the second arc isolation plate are located on the same plane.

[0018] The first support leg and the first arc isolation plate are arranged front and back, and the two are arranged in parallel, so as to better form a space for accommodation, so that the structure of the first arc isolation rotating plate is more streamlined and the processing is more convenient. The second arc isolation rotating plate here also has the same structure. In addition, it should be noted that there is a gap between the first support leg and the first arc isolation plate.

[0019] The length of the first leg is greater than the length of the first arc isolation plate, and the length of the fourth leg is greater than the length of the second arc isolation plate.

[0020] The length limitation forms a better driving effect. Here, when the moving contact rotates, the moving contact first contacts the first leg to form a driving effect. Similarly, the moving contact also first contacts the fourth leg to form a driving effect.

[0021] The moving contact comprises a first driving part and a second driving part, the first leg is located on the motion track of the first driving part, and the fourth leg is located on the motion track of the second driving part.

[0022] The first driving part and the second driving part form a corresponding driving effect, so that the first arc-isolating rotating plate and the second arc-isolating rotating plate are rotated into place, which is convenient for the coordination effect during the subsequent rotation.

[0023] The accommodating cavity is provided with a limiting portion, which is located on the motion trajectory of the second driving portion; or the moving contact includes a third driving portion, and the limiting portion is located on the motion trajectory of the third driving portion.

[0024] In addition to driving the second arc-isolating rotating plate to rotate, the second driving part also has a limiting effect to prevent the moving contact from rotating excessively as a whole. Alternatively, the moving contact is provided with a third driving part, which is independently provided with the second driving part to form a limiting effect.

[0025] Wherein, a first flange is provided at the end of the first arc isolation plate, and a second flange is provided at the end of the second arc isolation plate.

[0026] The setting of the flange improves the strength of the arc isolation plate and enhances the arc isolation effect.

[0027] The size of the second static contact facing the moving contact is larger than the size of the first static contact facing the moving contact; the size of the second static contact facing the moving contact is larger than the size of the third static contact facing the moving contact.

[0028] The second stationary contact is a common contact, so the size is increased, thereby improving the stability of the electrical connection.

[0029] The second static contact has an arc surface on the side facing the moving contact, and the arc surface is concave on the side away from the moving contact.

[0030] The setting of the arc surface forms a certain guiding effect, so that the second static contact can better cooperate with the moving contact.

[0031] Among them, the main body includes an upper cover, a middle cover, a base and a bottom sealing plate. The upper cover and the middle cover cooperate to form a first rotating shaft hole, and the first arc-isolating rotating plate is provided with a first rotating shaft portion that cooperates with the first rotating shaft hole; the bottom sealing plate and the base cooperate to form a second rotating shaft hole, and the second arc-isolating rotating plate is provided with a second rotating shaft portion that cooperates with the second rotating shaft hole.

[0032] The setting of the rotating shaft hole is adopted to better achieve the rotation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0034] Figure 2 It is a cross-sectional view of Example 1 of the utility model;

[0035] Figure 3 It is a partial structural schematic diagram of Example 1 of the utility model;

[0036] Figure 4 It is a cross-sectional view of Example 1 of the utility model;

[0037] Figure 5 It is a partial structural schematic diagram of Example 1 of the utility model;

[0038] Figure 6 It is a cross-sectional view of Example 1 of the utility model;

[0039] Figure 7 It is a partial structural schematic diagram of Example 1 of the utility model;

[0040] Figure 8 It is a cross-sectional view of Example 1 of the utility model;

[0041] Fig. 9 It is a structural schematic diagram of the first arc-isolating rotating plate in Embodiment 1 of the present utility model;

[0042] Fig.10 It is a partial structural schematic diagram of Example 1 of the utility model;

[0043] Fig.11 It is a cross-sectional view of Example 1 of the utility model;

[0044] Fig.12 It is a structural schematic diagram of the first arc-isolating rotating plate in Example 2 of the utility model. DETAILED DESCRIPTION

[0045] Embodiment 1:

[0046] A dual power transfer switch with an arc isolation plate, as shown in the attached Figure 1-12 As shown, including:

[0047] The body 11 is provided with a receiving cavity 111 .

[0048] The moving contact 12 is accommodated in the accommodating chamber 111. The moving contact 12 rotates in cooperation with the operating mechanism. Here, the moving contact 12 specifically cooperates with the square shaft to achieve the effect of rotation. The square shaft can be electrically rotated or manually rotated, and those skilled in the art can adjust it according to actual needs. The operating mechanism here is the prior art, so it is not described in detail here. The moving contact 12 includes a first contact part 121 and a second contact part 122. The first contact part 121 and the second contact part 122 are used to cooperate with the static contact to achieve the cooperation effect in different states. Here, the first contact part 121 and the second contact part 122 are specifically a clamping groove structure, that is, the static contact extends into the clamping groove, thereby achieving the electrical connection effect. This is also the prior art, so it is not described in detail.

[0049] The first static contact 13 is accommodated in the accommodating cavity 111 . In this embodiment, the first static contact 13 is located on one side above the accommodating cavity 111 and extends vertically downward, that is, it can be considered to be located directly above the moving contact 12 .

[0050] The second static contact 14 is accommodated in the accommodating cavity 111. In this embodiment, the second static contact 14 is located on the right side of the accommodating cavity 111 and extends horizontally to the left side, that is, it can be considered to be located on the right side of the moving contact 12, specifically, in the middle position of the right side of the moving contact 12.

[0051] The third static contact 15 is accommodated in the accommodating cavity 111. In the present embodiment, the third static contact 15 is located on one side below the accommodating cavity 111 and extends vertically and vertically upward, that is, it can be considered to be located directly below the moving contact 12. The third static contact 15 is symmetrically arranged with the first static contact 13. The second static contact 14 is located on the symmetrical center line of the first static contact 13 and the third static contact 15. Therefore, the moving contact 12 can achieve the effect of electrical connection by rotating 90°. The first static contact 13, the second static contact 14, and the third static contact 15 are all located on the movement trajectory of the moving contact 12.

[0052] For example, in the first state, the first contact part 121 is connected and matched with the first static contact 13 to realize electrical connection, and the second contact part 122 is connected and matched with the second static contact 14 to realize electrical connection. The movable contact 12 is rotated 90° to the second state. At this time, the first contact part 121 is connected and matched with the second static contact 14 to realize electrical connection, and the second contact part 122 is connected and matched with the third static contact 15 to realize electrical connection. Here, the first state can be a common circuit, and the second state can be a standby circuit; or the first state is a standby circuit, and the second state is a common circuit, that is, a conversion between a common circuit and a standby circuit is formed. In addition, when the movable contact 12 is rotated 45°, it can be realized that the first contact part 121 is not electrically connected to any static contact, and the second contact part 122 is not electrically connected to any static contact. Here, specifically in the first state, it is rotated 45°.

[0053] The first arc-isolating rotating plate 16 is accommodated in the accommodating chamber 111, and the first arc-isolating rotating plate 16 rotates relative to the accommodating chamber 111, and the first arc-isolating rotating plate 16 is provided with a first arc-isolating plate 161. In this embodiment, the first arc-isolating rotating plate 16 is specifically located at the upper right of the accommodating chamber 111, that is, located in the area between the first static contact 13 and the second static contact 14, so that the first arc-isolating plate 161 is also located between the first static contact 13 and the second static contact 14. Here, the first arc-isolating rotating plate 16 is specifically made of insulating material, which has the effect of extinguishing and extinguishing arcs. In addition, its material can also be a gas-generating material. When the electric arc contacts it, gas will be generated to improve the arc-extinguishing effect.

[0054] The second arc-isolating rotating plate 17 is accommodated in the accommodating chamber 111, and the second arc-isolating rotating plate 17 rotates relative to the accommodating chamber 111, and the second arc-isolating rotating plate 17 is provided with a second arc-isolating plate 171. In the present embodiment, the second arc-isolating rotating plate 17 is specifically located at the lower right of the accommodating chamber 111, that is, located in the area between the second static contact 14 and the third static contact 15, so that the second arc-isolating plate 171 is located between the second static contact 14 and the third static contact 15. Here, the second arc-isolating rotating plate 17 is specifically made of insulating material, which has the effect of extinguishing and extinguishing arcs. In addition, its material can also be a gas-producing material. When the electric arc contacts it, gas will be generated to improve the arc-extinguishing effect. It should also be noted that the structures of the first arc-isolating rotating plate 16 and the second arc-isolating rotating plate 17 are the same, and the only difference is the position.

[0055] The first arc isolation rotating plate 16 and the second arc isolation rotating plate 17 are independently arranged, and the independent arrangement specifically means that there is no transmission connection relationship between the two. The first arc isolation rotating plate 16 and the second arc isolation rotating plate 17 are both located on the motion trajectory of the moving contact 12. The first arc isolation rotating plate 16 and the second arc isolation rotating plate 17 are driven to rotate by the rotation of the moving contact 12. For example, when the moving contact 12 rotates from the first state to the second state, the first arc isolation plate 161 will isolate the arc between the first static contact 13 and the second static contact 14, and the second arc isolation plate 171 will isolate the arc between the second static contact 14 and the third static contact 15. Conversely, the same arc isolation operation is performed.

[0056] With this structural setting, when the moving contact 12 rotates, it drives the arc isolation rotating plate to rotate, so that the arc isolation rotating plate separates the arc generated between the contact part and the static contact, thereby achieving the effect of arc extinguishing and arc extinction. Compared with the arc extinguishing assembly in the prior art, this structure is simpler and has a low production cost, can meet the arc extinguishing effect, and improve the market competitiveness of the product.

[0057] Specifically, as attached Figure 3-12As shown, the first arc-isolating rotating plate 16 includes a first leg 162 and a second leg 163, and the first leg 162 and the second leg 163 are located on the motion track of the first contact part 121. Here, the first leg 162 and the second leg 163 extend radially outward, and the first leg 162 and the second leg 163 form a certain angle, and the angle of the angle here can be adjusted according to actual needs. For example, when the moving contact 12 rotates forward, the first contact part 121 drives the second leg 163 to rotate, so that the entire first arc-isolating rotating plate 16 rotates. At this time, the first arc-isolating plate 161 and the first leg 162 rotate at the same time. When the moving contact 12 is reversed, the first contact part 121 drives the first leg 162 to rotate. At this time, the first arc-isolating plate 161 and the second leg 163 rotate at the same time, that is, a two-way driving effect is formed. The second arc isolation rotating plate 17 includes a third leg 172 and a fourth leg 173, and the third leg 172 and the fourth leg 173 are located on the motion trajectory of the second contact part 122. The third leg 172 and the fourth leg 173 also extend radially outward, and the third leg 172 and the fourth leg 173 form a certain angle, and the angle of the angle here can be adjusted according to actual needs. For example, when the moving contact 12 rotates forward, the second contact part 122 drives the fourth leg 173 to rotate, so that the entire second arc isolation rotating plate 17 rotates. At this time, the second arc isolation plate 171 and the third leg 172 rotate at the same time. When the moving contact 12 is reversed, the second contact part 122 drives the third leg 172 to rotate. At this time, the second arc isolation plate 171 and the fourth leg 173 rotate at the same time, that is, a two-way driving effect is formed. The setting of the first leg 162, the second leg 163, the third leg 172, and the fourth leg 173 forms a two-way drive, which better achieves the driving effect. In addition, an arc-isolating rotating plate may be provided with only one support leg, and a resetting effect may be achieved through a resetting tool such as a torsion spring. This structure has the disadvantage that the resetting tool is made of metal, which may affect the direction of the arc.

[0058] Specifically, as attached Figure 3-12As shown, the first leg 162 and the first arc isolation plate 161 are located on the same plane. In this embodiment, the first leg 162 is located at the rear side of the first arc isolation plate 161, that is, the first arc isolation plate 161 is in front. The fourth leg 173 and the second arc isolation plate 171 are located on the same plane. In this embodiment, the fourth leg 173 is located at the front side of the second arc isolation plate 171. The setting of this structure is mainly to give way to the first static contact 13 and the third static contact 15, that is, the first leg 162 will not directly contact the first static contact 13, and the fourth leg 173 will not directly contact the third static contact 15. The first leg 162 and the first arc isolation plate 161 are arranged front and back, and the two are arranged in parallel, so as to better form spatial accommodation, so that the structure of the first arc isolation rotating plate 16 is more streamlined and the processing is more convenient. Here, the second arc isolation rotating plate 17 also has the same structure. In addition, a gap is provided between the first leg 162 and the first arc isolation plate 161. It should also be noted that the second leg 163 and the third leg 172 can also have an arc-isolating effect. Normally, the first arc-isolating plate 161 and the second arc-isolating plate 171 cut off the arc between one of the contact parts and the static contact, which can achieve arc cutting of the entire circuit. When the second leg 163 and the third leg 172 can also have an arc-isolating effect, a double cutting effect can be achieved, that is, a cut-off of two breakpoints is formed, which can improve the arc-isolating efficiency. The heights of the first arc-isolating plate 161, the second arc-isolating plate 171, the second leg 163, and the third leg 172 are all greater than the height of the clamping groove, so that the arc cannot continue, and a cutting effect can be achieved.

[0059] Specifically, the length of the first leg 162 is greater than the length of the first arc isolation plate 161, and the length of the fourth leg 173 is greater than the length of the second arc isolation plate 171. The length limitation forms a better driving effect. Here, when the moving contact 12 rotates, the moving contact 12 first contacts the first leg 162 to form a driving effect. Similarly, the moving contact 12 also first contacts the fourth leg 173 to form a driving effect.

[0060] Specifically, as attached Figure 3-12As shown, the moving contact 12 includes a first driving part 123 and a second driving part 124, and the first leg 162 is located on the motion track of the first driving part 123. When the moving contact 12 rotates forward, the first contact part 121 drives the second leg 163 to rotate, and the first leg 162 also moves accordingly. After the first contact part 121 is separated from the second leg 163, the first driving part 123 drives the first leg 162 to continue to rotate, providing better arc isolation conditions during reverse rotation. The fourth leg 173 is located on the motion track of the second driving part 124. When the moving contact 12 is reversed, the second contact part 122 drives the third leg 172 to rotate, and the fourth leg 173 also moves accordingly. After the second contact part 122 is separated from the third leg 172, the second driving part 124 drives the fourth leg 173 to continue to rotate, providing better arc isolation conditions during forward rotation. In this embodiment, the movement positions of the first contact part 121 and the second contact part 122 can be adjusted according to actual needs, so that the first arc isolation rotating plate 16 and the second arc isolation rotating plate 17 can be rotated to a suitable position, and can also be directly moved to a limit position, that is, the second support leg 163 abuts against the inner wall of the accommodating cavity 111 to form a limit effect, and the third support leg 172 abuts against the inner wall of the accommodating cavity 111 to form a limit effect.

[0061] Specifically, as attached Figure 3-12 As shown, the accommodating chamber 111 is provided with a limiting portion 112, and the limiting portion 112 is located on the movement trajectory of the second driving portion 124. In addition to the function of driving the second arc-isolating rotating plate 17 to rotate, the second driving portion 124 also has a limiting effect to prevent the moving contact 12 from excessively rotating as a whole. Specifically, when the moving contact 12 rotates forward, the first driving portion 123 cooperates with the first support leg 162, so that the second support leg 163 fits against the inner wall of the accommodating chamber 111. At this time, the second driving portion 124 has not yet abutted against the limiting portion 112. When the moving contact 12 rotates excessively as a whole, the second driving portion 124 abuts against the limiting portion 112. In this embodiment, the limiting portion 112 is a protruding structure. In addition, it can also be a columnar structure.

[0062] Specifically, as attached Figure 10-11 As shown, the moving contact 12 includes a third driving part 125, and the limiting part 112 is located on the motion trajectory of the third driving part 125. The third driving part 125 and the second driving part 124 and the first driving part 123 are independently arranged, and the third driving part 125 and the limiting part 112 form a limiting and fixing effect.

[0063] Specifically, as attached Figure 3-12As shown, a first flange 1611 is provided at the end of the first arc isolation plate 161, and a second flange 1711 is provided at the end of the second arc isolation plate 171. The provision of the flanges improves the strength of the arc isolation plate and increases the arc isolation effect. The first flange 1611 is located on the side of the first arc isolation plate 161 facing the first contact part 121, and the second flange 1711 is located on the side of the second arc isolation plate 171 facing the second contact part 122.

[0064] Specifically, as attached Figure 3-12 As shown, the size of the second static contact 14 facing the moving contact 12 is larger than the size of the first static contact 13 facing the moving contact 12; the size of the second static contact 14 facing the moving contact 12 is larger than the size of the third static contact 15 facing the moving contact 12. Here, it specifically refers to the size of the matching position of the static contact and the moving contact 12, and the size of the second static contact 14 matching the moving contact 12 is the largest. Since the second static contact 14 is a common contact, the size is increased, thereby improving the stability of the electrical connection.

[0065] Specifically, as attached Figure 3-12 As shown, the angle formed by the first contact part 121 and the second contact part 122 can be an acute angle, an obtuse angle, or a flat angle, which is specifically defined by the positional relationship between the first static contact 13, the second static contact 14, and the third static contact 15. For example, when the size of the second static contact 14 is large, it is sufficient to meet the electrical connection effect. At this time, the angle formed by the first contact part 121 and the second contact part 122 can be an obtuse angle or a flat angle; when the sizes of the three static contacts are small, resulting in a smaller creepage standard, the angle formed by the first contact part 121 and the second contact part 122 can be an acute angle. Those skilled in the art can adjust according to actual needs. In this embodiment, the angle formed by the first contact part 121 and the second contact part 122 specifically refers to the angle formed by the imaginary center line of the clamping groove of the first contact part 121 and the imaginary center line of the clamping groove of the second contact part 122. In this embodiment, the angle formed by the first contact part 121 and the second contact part 122 specifically refers to the angle formed by the imaginary center line of the clamping groove of the first contact part 121 and the imaginary center line of the clamping groove of the second contact part 122 .

[0066] Specifically, as attached Figure 3-12 As shown, the side of the second stationary contact 14 facing the moving contact 12 is an arc surface, and the arc surface is concave toward the side away from the moving contact 12, that is, the arc surface is an inwardly concave arc. The setting of the arc surface forms a certain guiding effect, so that the second stationary contact 14 can better cooperate with the moving contact 12. In addition, the side of the second stationary contact 14 facing the moving contact 12 can also be a plane.

[0067] Specifically, as attached Figure 2As shown, the accommodating cavity 111 is provided with a first rotating shaft hole 113 and a second rotating shaft hole 114. The first rotating shaft hole 113 is located at the upper right of the accommodating cavity 111, and the second rotating shaft hole 114 is located at the lower right of the accommodating cavity 111. The first arc-isolating rotating plate 16 is provided with a first rotating shaft portion 164 that cooperates with the first rotating shaft hole 113. The first rotating shaft portion 164 cooperates with the first rotating shaft hole 113 to form a relative rotation effect. Here, the first support leg 162, the second support leg 163 and the first arc-isolating plate 161 are all connected to the first rotating shaft portion 164, that is, the overall structure of the first arc-isolating rotating plate 16 is formed. Here, the first arc-isolating rotating plate 16 is integrally injection molded. The second arc-isolating rotating plate 17 is provided with a second rotating shaft portion 174 that cooperates with the second rotating shaft hole 114. The second rotating shaft portion 174 cooperates with the second rotating shaft hole 114 to form a relative rotation effect. Here, the third support leg 172 , the fourth support leg 173 and the second arc isolation plate 171 are all connected to the second rotating shaft portion 174 , forming the overall structure of the second arc isolation rotating plate 17 . Here, the second arc isolation rotating plate 17 is integrally injection molded.

[0068] Specifically, as attached Figure 1-2 As shown, the body 11 includes an upper cover 18, a middle cover 19, a base 20 and a bottom sealing plate 21. The upper cover 18, the middle cover 19, the base 20 and the bottom sealing plate 21 are arranged from top to bottom, that is, the middle cover 19 is located between the upper cover 18 and the base 20, and the connection and fixing method here can be bolt connection. The upper cover 18, the middle cover 19 and the base 20 cooperate to form a receiving cavity 111. The bottom sealing plate 21 cooperates with the lower end of the base 20 to form a fixing effect. The first static contact 13 is located between the upper cover 18 and the middle cover 19, and the second static contact 14 and the third static contact 15 are located between the middle cover 19 and the base 20. It should also be noted here that the first static contact 13, the second static contact 14 and the third static contact 15 are partially extended to the outside, for forming an electrical connection effect with an external conductive member. The upper cover 18 and the middle cover 19 cooperate to form a first shaft hole 113. The bottom sealing plate 21 and the base 20 cooperate to form a second shaft hole 114. The setting of the rotating shaft hole can better achieve the rotation effect. In addition, a pin fixing method can also be adopted, that is, the arc isolation rotating plate is provided with a through hole, and the pin passes through to achieve the effect of rotation connection.

[0069] The specific working principle is that in the first state, the first contact part 121 is connected and matched with the first static contact 13 to realize electrical connection, and the second contact part 122 is connected and matched with the second static contact 14 to realize electrical connection. The moving contact 12 is rotated, the first contact part 121 is separated from the first static contact 13, and then the first contact part 121 is abutted against the second leg 163, driving the first arc isolation rotating plate 16 to rotate, and the first arc isolation plate 161 is also rotated to the position between the first static contact 13 and the second static contact 14 to form an arc isolation effect. The second contact part 122 is also rotated synchronously, the second contact part 122 is separated from the second static contact 14, and then the second contact part 122 is abutted against the fourth leg 173, driving the second arc isolation rotating plate 17 to rotate, and the third leg 172 is rotated to the position between the second static contact 14 and the third static contact 15 to form an arc isolation effect.

[0070] The first contact part 121 continues to rotate, and the second leg 163 separates, and the first driving part 123 drives the first leg 162 to continue to rotate. The second contact part 122 keeps driving the fourth leg 173 to rotate.

[0071] When the first contact part 121 is electrically connected to the second stationary contact 14 and the second contact part 122 is electrically connected to the third stationary contact 15 , the third leg 172 is located between the second stationary contact 14 and the third stationary contact 15 , and the second leg 163 abuts against the side wall of the accommodating cavity 111 .

[0072] Then, it rotates 90° in the opposite direction, that is, it rotates from the second state to the first state, the second contact part 122 drives the third leg 172 to rotate, and the first contact part 121 drives the first leg 162 to rotate continuously, and then the second driving part 124 drives the fourth leg 173 to rotate. The final state is that the first contact part 121 is electrically connected to the first static contact 13, and the second contact part 122 is electrically connected to the second static contact 14. At this time, the third leg 172 is against the side wall of the accommodating cavity 111, and the second leg 163 is located between the first static contact 13 and the second static contact 14.

[0073] Embodiment 2:

[0074] As attached Fig.12 As shown, the difference between Example 2 and Example 1 is that the first support leg 162 is connected to the first arc isolation plate 161 without a gap therebetween; and the first arc isolation plate 161 is not provided with a flange.

Claims

1. A dual power transfer switch with an arc isolation plate, characterized in that: include: A main body, wherein the main body is provided with a receiving cavity; A moving contact, the moving contact is accommodated in the accommodating cavity, the moving contact comprises a first contact part and a second contact part, and the moving contact rotates in cooperation with the operating mechanism; A first stationary contact, the first stationary contact is accommodated in the accommodating cavity; A second stationary contact, the second stationary contact is accommodated in the accommodating cavity; A third static contact, the third static contact is accommodated in the accommodating cavity, and the first static contact, the second static contact and the third static contact are all located on the motion track of the moving contact; A first arc-isolating rotating plate, the first arc-isolating rotating plate is accommodated in the accommodating cavity, and the first arc-isolating rotating plate rotates relative to the accommodating cavity, the first arc-isolating rotating plate is provided with a first arc-isolating plate, and the first arc-isolating plate is located between the first static contact and the second static contact; A second arc-isolating rotating plate, the second arc-isolating rotating plate is accommodated in the accommodating cavity, and the second arc-isolating rotating plate rotates relative to the accommodating cavity, the second arc-isolating rotating plate is provided with a second arc-isolating plate, and the second arc-isolating plate is located between the second static contact and the third static contact; The first arc isolation rotating plate and the second arc isolation rotating plate are independently arranged, and both the first arc isolation rotating plate and the second arc isolation rotating plate are located on the movement track of the moving contact.

2. A dual power transfer switch with arc isolation plate as claimed in claim 1, characterized in that: The first arc-isolating rotating plate includes a first leg and a second leg, and the first leg and the second leg are located on the movement trajectory of the first contact part; the second arc-isolating rotating plate includes a third leg and a fourth leg, and the third leg and the fourth leg are located on the movement trajectory of the second contact part.

3. A dual power transfer switch with arc isolation plate as claimed in claim 2, characterized in that: The first support leg and the first arc isolation plate are located on the same plane, and the fourth support leg and the second arc isolation plate are located on the same plane.

4. A dual power transfer switch with an arc isolation plate as claimed in claim 2 or 3, characterized in that: The length of the first leg is greater than the length of the first arc isolation plate, and the length of the fourth leg is greater than the length of the second arc isolation plate.

5. A dual power transfer switch with arc isolation plate as claimed in claim 1, characterized in that: The moving contact comprises a first driving part and a second driving part, the first support leg is located on the movement track of the first driving part, and the fourth support leg is located on the movement track of the second driving part.

6. A dual power transfer switch with arc isolation plate as claimed in claim 5, characterized in that: The accommodating cavity is provided with a limiting portion, which is located on the motion track of the second driving portion; or the moving contact includes a third driving portion, and the limiting portion is located on the motion track of the third driving portion.

7. A dual power transfer switch with arc isolation plate as claimed in claim 1, characterized in that: A first flange is provided at the end of the first arc isolation plate, and a second flange is provided at the end of the second arc isolation plate.

8. A dual power transfer switch with an arc isolation plate as claimed in claim 1, characterized in that: The size of the second static contact facing the moving contact is larger than the size of the first static contact facing the moving contact; the size of the second static contact facing the moving contact is larger than the size of the third static contact facing the moving contact.

9. A dual power transfer switch with arc isolation plate as claimed in claim 8, characterized in that: The second static contact has an arc surface on the side facing the moving contact, and the arc surface is concave on the side away from the moving contact.

10. A dual power transfer switch with an arc isolation plate as claimed in claim 1, characterized in that: The main body includes an upper cover, a middle cover, a base and a bottom sealing plate. The upper cover and the middle cover cooperate to form a first rotating shaft hole, and the first arc-isolating rotating plate is provided with a first rotating shaft portion that cooperates with the first rotating shaft hole; the bottom sealing plate and the base cooperate to form a second rotating shaft hole, and the second arc-isolating rotating plate is provided with a second rotating shaft portion that cooperates with the second rotating shaft hole.

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