Control and protection switching device

Abstract

The utility model belongs to the technical field of low-voltage apparatuses, and discloses a control and protection switching apparatus. Comprising a shell and a contact module, a pressing piece, an electromagnet module and an operating mechanism which are arranged in the shell, the contact module comprises a static contact and a moving contact, the pressing piece is in sliding connection with the shell, and the pressing piece is in contact with the moving contact; when the operating mechanism is switched on, the electromagnet module is used for selectively abutting against the abutting piece, and the abutting piece slides relative to the shell and drives the moving contact to move, so that the moving contact is separated from the static contact. And when the operating mechanism is tripped, the operating mechanism is used for pressing the pressing piece, so that the moving contact is separated from the static contact. Once a short-circuit fault occurs, the operating mechanism is tripped, and the operating mechanism presses the pressing piece before the electromagnet module, so that the moving contact and the static contact are controlled to be rapidly separated, the breaking capacity is improved, rapid breaking can be achieved, and the situation that the breaking action is slow due to the fact that the electromagnet module is influenced by residual magnetism is avoided.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage electrical technology, and in particular to a control and protection switch. Background Technology

[0002] Control and protection switchgear (CPS) is an electrical device that integrates control and protection functions. It is mainly used to replace traditional low-voltage electrical appliances such as circuit breakers, contactors, thermal relays and fuses.

[0003] In existing technologies, control and protection switching devices all utilize electromagnet modules to control opening and closing. When a short circuit fault occurs, the operating mechanism of the control and protection switching device trips, causing the micro switch or linkage contact in the control circuit connected in series with the electromagnet coil to open, thereby cutting off the power supply circuit of the electromagnet coil and de-energizing it. Even after the electromagnet coil is de-energized, the residual magnetism of the iron core and the follow current of the electromagnet coil can still maintain the iron core for a period of time, resulting in a slow separation speed of the moving and stationary contacts, leading to contact fusion, severe burn damage, and poor breaking capacity.

[0004] Therefore, there is an urgent need to provide a control and protection switchgear to improve the breaking capacity of the control and protection switchgear and enable it to quickly disconnect in the event of a short circuit fault. Utility Model Content

[0005] The purpose of this utility model is to provide a control and protection switchgear to improve the breaking capacity of the control and protection switchgear and enable rapid breaking in the event of a short circuit fault.

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

[0007] This utility model provides a control and protection switchgear, including a housing and a contact module, a pressing member, an electromagnet module and an operating mechanism disposed within the housing. The contact module includes a stationary contact and a moving contact. The pressing member is slidably connected to the housing and contacts the moving contact.

[0008] When the operating mechanism is closed, the electromagnet module is used to selectively press against the pressing member. The pressing member slides relative to the housing and drives the moving contact to move, so that the moving contact is separated from the stationary contact. When the operating mechanism is tripped, the operating mechanism is used to press against the pressing member, so that the moving contact is separated from the stationary contact.

[0009] As an optional technical solution for controlling and protecting switching electrical appliances, the pressing component includes a main pressure plate and a mounting structure connected to the main pressure plate. The mounting structure is slidably connected to the housing. The main pressure plate is in contact with the moving contact. The electromagnet module and the operating mechanism press against the main pressure plate respectively.

[0010] As an optional technical solution for controlling and protecting switching electrical appliances, the main pressure plate has a first platform and a second platform on one side. The first platform is used for the operating mechanism to press against it, and the second platform is used for the electromagnet module to press against it. The main pressure plate has a lower pressing surface on the other side, and the lower pressing surface is in contact with the moving contact.

[0011] As an optional technical solution for controlling and protecting switching electrical appliances, the electromagnet module includes an electromagnet assembly and a push plate. The first end of the push plate is rotatably connected to the electromagnet assembly, and the electromagnet assembly is used to drive the push plate to rotate so that the second end of the push plate presses against the second platform.

[0012] As an optional technical solution for controlling and protecting switching electrical appliances, the pressing member is provided with two second platforms spaced apart, the first platform is located between the two second platforms, and the second end of the push plate is provided with two pushing parts spaced apart, the pushing parts corresponding one-to-one with the second platforms;

[0013] When the operating mechanism is closed, the push plate rotates, which can drive the pushing part to press against the corresponding second platform; when the operating mechanism is disengaged, the operating mechanism presses against the first platform.

[0014] As an optional technical solution for controlling and protecting switching electrical appliances, the pushing part has an arc surface, the second platform is a plane, and the pushing part contacts the second platform through the arc surface.

[0015] As an optional technical solution for controlling and protecting switching electrical appliances, two second platforms are arranged side by side in the horizontal direction, and the first platform and the second platform are staggered in the horizontal direction.

[0016] As an optional technical solution for controlling and protecting switching electrical appliances, both the first platform and the second platform are planar and parallel to each other, with the first platform being higher than the second platform.

[0017] As an optional technical solution for controlling and protecting switching electrical appliances, the housing is provided with a sliding groove, and the mounting structure includes a connecting part and a sliding part. The sliding part is connected to the main pressure plate through the connecting part, and the sliding part is slidably inserted into the sliding groove.

[0018] As an optional technical solution for controlling and protecting switching electrical appliances, the operating mechanism includes a tripping component, a linkage component, a short-circuit protection component, and an operating component. The tripping component is connected to the operating component and the linkage component. One end of the linkage component is rotatably connected to the housing, and the other end is connected to the moving iron core of the short-circuit protection component. The movement of the moving iron core drives the linkage component to rotate, causing the tripping component to trip. The tripping component tripping causes the operating component to move to press against the pressing component.

[0019] Beneficial effects:

[0020] This utility model provides a control and protection switchgear, including a housing and a contact module, a pressing member, an electromagnet module, and an operating mechanism disposed within the housing. The contact module includes a stationary contact and a moving contact. The pressing member is slidably connected to the housing and contacts the moving contact. When the operating mechanism closes, the electromagnet module selectively presses the pressing member, causing the pressing member to slide relative to the housing and move the moving contact, thus separating the moving contact from the stationary contact. When the operating mechanism trips, the operating mechanism presses the pressing member, separating the moving contact from the stationary contact. By setting the pressing member, when the operating mechanism closes, the electromagnet module selectively presses the pressing member, thereby controlling the moving contact. In the event of a short circuit fault, the operating mechanism trips, and the operating mechanism presses the pressing member before the electromagnet module, thereby controlling the rapid separation of the moving contact from the stationary contact. This improves the breaking capacity and enables rapid breaking, avoiding the slow breaking action caused by residual magnetism in the electromagnet module. Attached Figure Description

[0021] Figure 1 This is a partial structural schematic diagram of the control and protection switching electrical appliance provided in this embodiment of the utility model;

[0022] Figure 2 This is a partially exploded view of the control and protection switchgear provided in this embodiment of the utility model;

[0023] Figure 3 This is a schematic diagram of the outer shell provided in an embodiment of the present utility model;

[0024] Figure 4 This is a structural schematic diagram of the outer shell and the pressing member provided in the embodiment of this utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the control and protection switch (operating mechanism in tripped state) provided in this embodiment of the utility model;

[0026] Figure 6 This is a schematic diagram of the structure of the control and protection switchgear (operating mechanism in closed state) provided in this embodiment of the utility model;

[0027] Figure 7This is a schematic diagram of the structure of the pressing member provided in this embodiment of the utility model;

[0028] Figure 8 This is a schematic diagram of the push plate provided in an embodiment of the present utility model;

[0029] Figure 9 This is a schematic diagram of the operating mechanism (disengaged state) provided in an embodiment of the present invention;

[0030] Figure 10 This is a schematic diagram of the operating mechanism (closed state) provided in an embodiment of the present utility model;

[0031] Figure 11 This is a schematic diagram of the structure of the tripping assembly and operating component provided in this embodiment of the utility model;

[0032] Figure 12 This is a schematic diagram of the linkage component provided in an embodiment of the present utility model.

[0033] In the picture:

[0034] 1. Outer shell; 11. Slide groove;

[0035] 2. Contact module; 21. Stationary contact; 22. Moving contact; 23. First elastic element; 24. Contact support;

[0036] 3. Pressing component; 31. Main pressure plate; 311. First platform; 312. Second platform; 313. Lower pressing surface; 32. Mounting structure; 321. Connecting part; 322. Sliding part;

[0037] 4. Electromagnet module; 41. Electromagnet assembly; 42. Push plate; 421. Pushing part; 422. Clearance groove;

[0038] 5. Operating mechanism; 51. Tripping assembly; 511. Rocker arm; 512. Pushing component; 513. Lock; 514. Second elastic component; 515. First connecting rod; 516. Second connecting rod; 52. Linkage component; 521. Connecting arm; 522. U-shaped groove; 53. Short circuit protection assembly; 54. Operating component. Detailed Implementation

[0039] 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.

[0040] 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 mechanical connection or an electrical connection; 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.

[0041] 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.

[0042] In the description of this embodiment, the terms "upper," "lower," "left," and "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.

[0043] like Figures 1 to 6 As shown, this embodiment provides a control and protection switchgear, which includes a housing 1 and a contact module 2, a pressing member 3, an electromagnet module 4, and an operating mechanism 5 disposed within the housing 1. The contact module 2 includes a stationary contact 21 and a moving contact 22. The pressing member 3 is slidably connected to the housing 1 and contacts the moving contact 22. When the operating mechanism 5 is closed, the electromagnet module 4 is used to selectively press the pressing member 3, which slides relative to the housing 1 and drives the moving contact 22 to move, causing the moving contact 22 to separate from the stationary contact 21. When the operating mechanism 5 is tripped, the operating mechanism 5 is used to press the pressing member 3, causing the moving contact 22 to separate from the stationary contact 21.

[0044] By setting the pressure member 3, when the operating mechanism 5 closes, the electromagnet module 4 selectively presses the pressure member 3, thereby controlling the moving contact 22; once a short circuit fault occurs, the operating mechanism 5 trips, and the operating mechanism 5 presses the pressure member 3 before the electromagnet module 4, thereby controlling the moving contact 22 to quickly separate from the stationary contact 21, which improves the breaking capacity and enables rapid breaking, and avoids the electromagnet module 4 being affected by residual magnetism, which would cause the breaking action to be slow.

[0045] See Figure 5 and Figure 6 The contact module 2 also includes a first elastic element 23 and a contact support 24. The moving contact 22 is disposed on the contact support 24, and the stationary contact 21 is fixed to the housing 1 and located directly above the moving contact 22. A pressing element 3 is disposed on the contact support 24. When the pressing element 3 is pressed, it drives the contact support 24 and the moving contact 22 to move away from the stationary contact 21, thereby compressing the first elastic element 23. The first elastic element 23 can be a spring. In this embodiment, the moving contact 22 and the stationary contact 21 are spaced apart in the vertical direction. When the contact support 24 and the moving contact 22 move in the vertical direction and gradually move away from the stationary contact 21, the first elastic element 23 is in a compressed state.

[0046] See Figure 5 and Figure 8 Furthermore, the electromagnet module 4 includes an electromagnet assembly 41 and a push plate 42. The first end of the push plate 42 is rotatably connected to the electromagnet assembly 41. The electromagnet assembly 41 is used to drive the push plate 42 to rotate to press against the pressing member 3.

[0047] When the electromagnet assembly 41 is energized, the moving and stationary iron cores of the electromagnet module 4 attract each other, causing the push plate 42 to rotate and move upward. Under the action of the first elastic member 23, the moving contact 22 moves closer to the stationary contact 21 until the moving and stationary contacts are connected. The movement of the moving contact 22 also causes the contact support 24 and the pressing member 3 to move together. When the electromagnet assembly 41 is de-energized, the moving and stationary iron cores of the electromagnet module 4 separate, causing the push plate 42 to rotate and move downward. The pressing member 3 is pressed, causing the contact support 24 and the moving contact 22 to move. The moving contact 22 moves away from the stationary contact 21 and separates from the stationary contact 21. The first elastic member 23 is in a compressed state.

[0048] In this embodiment, a micro switch or linkage contact switch is also provided between the operating mechanism 5 and the electromagnet module 4. The micro switch or linkage contact switch is linked with the operating mechanism 5. When the operating mechanism 5 is tripped, the micro switch or linkage contact switch is disconnected to de-energize the electromagnet assembly 41 of the electromagnet module 4. By setting the micro switch or linkage contact switch, when the operating mechanism 5 is tripped, the micro switch or linkage contact switch is disconnected, causing the push plate 42 to rotate and move downward to press against the pressing member 3.

[0049] See Figure 6 , Figure 9 and Figure 10 Furthermore, the operating mechanism 5 includes a tripping assembly 51, a linkage 52, a short-circuit protection assembly 53, and an operating member 54. The tripping assembly 51 is connected to the operating member 54 and the linkage 52. One end of the linkage 52 is rotatably connected to the housing 1 and the other end is connected to the moving iron core of the short-circuit protection assembly 53. The movement of the moving iron core drives the linkage 52 to rotate, causing the tripping assembly 51 to trip. The tripping assembly 51 trips, causing the operating member 54 to move to press against the pressing member 3.

[0050] By setting the moving iron core of the short-circuit protection component 53 to move, the linkage component 52 is driven to rotate. The rotation of the linkage component 52 triggers the tripping component 51 to trip. The tripping component 51 trips and drives the operating component 54 to rotate to press against the pressing component 3. Thus, the short-circuit protection component 53 and the tripping component 51 are linked by the linkage component 52, and the rotation of the operating component 54 is directly controlled to press against the pressing component 3, thereby controlling the moving contact 22 to quickly separate from the stationary contact 21.

[0051] See Figure 11 Specifically, the tripping assembly 51 includes a bracket, a rocker arm 511, a pusher 512, a latch 513, and a second elastic member 514. The bracket is fixed to the housing 1. The rocker arm 511, the latch 513, and the operating member 54 are all pivotally connected to the bracket. The pusher 512 is located between the rocker arm 511, the latch 513, and the operating member 54. The pusher 512 has a push shaft in the middle. The bracket has a guide groove. The push shaft is slidably disposed in the guide groove and can rotate in the guide groove. The push shaft is connected to the rocker arm 511 through a first connecting rod 515. One end of the pusher 512 is engaged with the latch 513, and the other end of the pusher 512 is connected to the operating member 54 through a second connecting rod 516. The second elastic member 514 is connected to the operating member 54.

[0052] During normal operation, the rocker arm 511 rotates to push the first connecting rod 515, which in turn pushes the pusher 512 to slide and rotate along the guide groove. One end of the pusher 512 pushes the operating member 54 (the operating member 54 is in a position where...). Figure 10 In this state, the moving contact 22 moves and approaches the stationary contact 21, the other end of the pushing member 512 locks with the latch 513, and the second elastic member 514 is constrained in the energy storage state; once a short circuit fault occurs, when the moving iron core of the short circuit protection component 53 moves and drives the linkage member 52 to rotate, the linkage member 52 rotates and drives the latch 513 to rotate and unlock, so that the overlapping part of the pushing member 512 and the latch 513 separates from each other, the second elastic member 514 is released and drives the operating member 54 (the operating member 54 is in the energy storage state). Figure 9 (State), to achieve the tripping of the operating mechanism 5, the operating element 54 presses against the pressing element 3, thereby separating the moving contact 22 and the stationary contact 21. It is understood that the tripping assembly 51 can be set with reference to existing technology, and the specific principle and design details will not be elaborated here.

[0053] See Figure 12 In this embodiment, one end of the linkage 52 is provided with two connecting arms 521 spaced apart, and the two connecting arms 521 are rotatably connected to the outer casing 1. The other end of the linkage 52 is provided with a U-shaped groove 522, and the U-shaped groove 522 is provided one-to-one with the moving iron core of the short circuit protection component 53. The top of the moving iron core is T-shaped and inserted into the U-shaped groove 522. The latch 513 extends to the bottom of the linkage 52, and the bottom of the linkage 52 is provided with a trigger protrusion, which overlaps with the latch 513. In the event of a short circuit, the moving iron core of the short circuit protection component 53 moves, thereby causing the linkage component 52 to rotate relative to the outer casing 1, triggering the protruding locking latch 513, which rotates relative to the bracket to unlock. The operating component 54 then presses against the pressing component 3, thereby causing the moving contact 22 and the stationary contact 21 to separate quickly. At the same time, the coil of the short circuit protection component 53 generates an induction signal to control the electromagnet component 41 of the electromagnet module 4 to be de-energized. The electromagnet component 41 drives the push plate 42 to rotate to press against the pressing component 3.

[0054] Furthermore, the pressing component 3 includes a main pressing plate 31 and a mounting structure 32 connected to the main pressing plate 31. The mounting structure 32 is slidably connected to the outer casing 1. The main pressing plate 31 contacts the moving contact 22. The electromagnet module 4 and the operating mechanism 5 press against the main pressing plate 31 respectively. By setting the main pressing plate 31 and the mounting structure 32, and utilizing the slidable connection between the mounting structure 32 and the outer casing 1, the electromagnet module 4 and the operating mechanism 5 can press against the main pressing plate 31, thereby driving the moving contact 22 to move. This not only restricts the movement direction of the main pressing plate 31 but also allows it to cooperate with the electromagnet module 4 and the operating mechanism 5.

[0055] In this embodiment, the outer casing 1 is provided with a sliding groove 11, and the mounting structure 32 includes a connecting part 321 and a sliding part 322. The sliding part 322 is connected to the main pressure plate 31 through the connecting part 321, and the sliding part 322 is slidably inserted into the sliding groove 11 in the vertical direction. By providing a sliding groove 11 on the outer casing 1 and using the sliding part 322 to slide and be inserted into the sliding groove 11, the movement direction of the sliding part 322 is restricted, thereby effectively restricting the movement direction of the pressing member 3.

[0056] In this embodiment, the sliding part 322 is flat; two U-shaped blocks are fixed on the outer shell 1, and the two U-shaped blocks are arranged at intervals relative to each other. The two sides of the sliding part 322 are respectively slidably inserted into one of the U-shaped blocks.

[0057] See Figure 7Optionally, the main pressure plate 31 has a first platform 311 and a second platform 312 on one side. The first platform 311 is used for the operating mechanism 5 to press against, and the second platform 312 is used for the electromagnet module 4 to press against. The other side of the main pressure plate 31 has a lower pressing surface 313. The movement of the main pressure plate 31 pushes the moving contact 22 to move through the lower pressing surface 313. By setting the first platform 311 and the second platform 312 on one side of the main pressure plate 31, they can cooperate with the operating mechanism 5 and the electromagnet module 4 respectively. The main pressure plate 31 will move when the operating mechanism 5 presses against the first platform 311 or the electromagnet module 4 presses against the second platform 312. The lower pressing surface 313 is set on the other side of the main pressure plate 31. When the main pressure plate 31 moves, the lower pressing surface 313 pushes the moving contact 22 to move. The first platform 311 and the second platform 312 are set separately so that the operating mechanism 5 and the electromagnet module 4 press against different positions of the main pressure plate 31, avoiding mutual interference.

[0058] Optionally, the pressing member 3 is provided with two second platforms 312 spaced apart, and the first platform 311 is located between the two second platforms 312. The second end of the push plate 42 is provided with two pushing parts 421 spaced apart, and the pushing parts 421 correspond one-to-one with the second platforms 312. When the operating mechanism 5 closes, the push plate 42 rotates and can drive the pushing parts 421 to press against the corresponding second platform 312. When the operating mechanism 5 is released, the operating mechanism 5 presses against the first platform 311.

[0059] By setting two second platforms 312 at intervals and setting two push parts 421 on the corresponding push plate 42, the first platform 311 is located between the two second platforms 312. When the operating mechanism 5 closes, the two push parts 421 can press against the corresponding second platform 312. When the operating mechanism 5 trips, the operating mechanism 5 presses against the first platform 311, which improves the stability of the force on the pressing part 3 and ensures that the pressing part 3 moves flexibly and smoothly.

[0060] In this embodiment, the first end of the push plate 42 of the electromagnet module 4 is rotatably connected to the electromagnet assembly 41, and the second end is provided with two pushing parts 421 for pressing against the second platform 312. There is an avoidance groove 422 between the two pushing parts 421, so that the push plate 42 can avoid the position movement of the first platform 311; the operating part 54 of the operating mechanism 5 is used to press against the first platform 311.

[0061] Optionally, two second platform surfaces 312 are arranged side by side in the horizontal direction, and the first platform surface 311 and the second platform surface 312 are staggered in the horizontal direction; both the first platform surface 311 and the second platform surface 312 are planar and parallel to each other, with the first platform surface 311 being higher than the second platform surface 312. By arranging the two second platform surfaces 312 side by side in the horizontal direction and staggering the first platform surface 311 and the second platform surface 312 in the horizontal direction, it is possible to adapt to the positions of the push plate 42 and the operating member 54, providing space for arranging the push plate 42 and the operating member 54 in the horizontal direction; by setting the first platform surface 311 and the second platform surface 312 as parallel planes and setting the first platform surface 311 higher than the second platform surface 312, the pressing member 3 can cooperate with the push plate 42 and the operating member 54 located at different heights, thereby providing a certain rotation space for the push plate 42 in the vertical direction.

[0062] In this embodiment, the push plate 42 is located on one side of the pressing member 3, and the position of the pushing part 421 of the push plate 42 matches the position of the second table 312; the operating member 54 is located above the pressing member 3 and matches the position of the first table 311.

[0063] Optionally, the pushing part 421 has an arc surface, and the pushing part 421 contacts the second platform 312 through the arc surface. By providing an arc surface, as the pushing part 421 rotates, the arc surface on the pushing part 421 can maintain line contact with the second platform 312, which helps in the transmission of force. In this embodiment, the operating member 54 also has an arc surface, and the operating member 54 contacts the first platform 311 through the arc surface.

[0064] The following is a detailed description of the operation of control and protection switching devices:

[0065] Under normal operating conditions, when the operating mechanism 5 is closed, the operating element 54 separates from the pressing element 3, and the moving and stationary contacts are controlled to open and close by the electromagnet module 4. If the electromagnet assembly 41 is energized, the moving and stationary iron cores of the electromagnet module 4 are attracted together, causing the push plate 42 to rotate upward, so that the moving contact 22 moves closer to the stationary contact 21 under the action of the first elastic element 23 until the moving and stationary contacts are connected, and the movement of the moving contact 22 drives the contact support 24 and the pressing element 3 to move together. If the electromagnet assembly 41 is de-energized, the push plate 42 rotates downward, causing the moving and stationary contacts to separate.

[0066] When a short circuit fault occurs, the short circuit protection component 53 drives the linkage component 52 to rotate, the linkage component 52 triggers the trip component 51 to trip, the trip component 51 trips and drives the operating component 54 to move to press against the first platform 311 of the pressing component 3, thereby achieving rapid disconnection. At the same time, the short circuit protection component 53 generates an induction signal to control the electromagnet component 41 of the electromagnet module 4 to de-energize, and the electromagnet component 41 drives the push plate 42 to rotate to press against the pressing component 3.

[0067] 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. Control and protection switchgear, characterized in that, The utility model relates to a contactor, which comprises a housing (1) and a contact module (2), a pressing piece (3), an electromagnet module (4) and an operating mechanism (5) arranged in the housing (1), the contact module (2) comprises a static contact (21) and a dynamic contact (22), the pressing piece (3) is in sliding connection with the housing (1), and the pressing piece (3) is in contact with the dynamic contact (22); When the operating mechanism (5) is closed, the electromagnet module (4) is used for selectively pressing the pressing piece (3), the pressing piece (3) slides relative to the housing (1) and drives the dynamic contact (22) to move, so that the dynamic contact (22) is separated from the static contact (21); when the operating mechanism (5) is tripped, the operating mechanism (5) is used for pressing the pressing piece (3), so that the dynamic contact (22) is separated from the static contact (21).

2. - A control and protection switchgear according to claim 1, characterized in that, The pressing piece (3) comprises a main pressing plate (31) and a mounting structure (32) connected to the main pressing plate (31), the mounting structure (32) is in sliding connection with the housing (1), the main pressing plate (31) is in contact with the dynamic contact (22), and the electromagnet module (4) and the operating mechanism (5) press the main pressing plate (31) respectively.

3. Control and protection switchgear according to claim 2, characterized in that, One side of the main pressing plate (31) is provided with a first table top (311) and a second table top (312), the first table top (311) is used for being pressed by the operating mechanism (5), the second table top (312) is used for being pressed by the electromagnet module (4), and the other side of the main pressing plate (31) is provided with a lower pressing surface (313), and the lower pressing surface (313) is in contact with the dynamic contact (22).

4. Control and protection switchgear according to claim 3, characterized in that, The electromagnet module (4) comprises an electromagnet assembly (41) and a push plate (42), a first end of the push plate (42) is in rotary connection with the electromagnet assembly (41), and the electromagnet assembly (41) is used for driving the push plate (42) to rotate so that a second end of the push plate (42) presses the second table top (312).

5. Control and protection switchgear according to claim 4, characterized in that, Two second table tops (312) are arranged at intervals on the pressing piece (3), the first table top (311) is located between the two second table tops (312), and a second end of the push plate (42) is provided with two push parts (421) at intervals, and the push parts (421) correspond to the second table tops (312) one by one. When the operating mechanism (5) is closed, the push plate (42) can drive the push parts (421) to press the corresponding second table tops (312) by rotating; when the operating mechanism (5) is tripped, the operating mechanism (5) presses the first table top (311).

6. Control and protection switcher according to claim 5, characterized in that, The push part (421) is provided with a circular arc surface, the second table top (312) is a plane, and the push part (421) is in contact with the second table top (312) through the circular arc surface.

7. Control and protection switchgear according to claim 5, characterized in that, The two second table tops (312) are arranged side by side along the horizontal direction, and the first table top (311) and the second table top (312) are arranged in a staggered mode in the horizontal direction.

8. Control and protection switchgear according to claim 3, characterized in that, The first mesa (311) and the second mesa (312) are both flat and parallel to each other, and the first mesa (311) is arranged higher than the second mesa (312).

9. Control and protection switcher according to claim 2, characterized in that, The shell (1) is provided with a sliding groove (11), the mounting structure (32) comprises a connecting part (321) and a sliding part (322), the sliding part (322) is connected with the main pressing plate (31) through the connecting part (321), and the sliding part (322) is slidably inserted into the sliding groove (11).

10. Control and protection switchgear according to any of claims 1-6, characterized in that, The operating mechanism (5) comprises a tripping assembly (51), a linkage (52), a short-circuit protection assembly (53) and an operating piece (54), the tripping assembly (51) is connected with the operating piece (54) and the linkage (52), one end of the linkage (52) is rotatably connected with the shell (1) and the other end is connected with a moving iron core of the short-circuit protection assembly (53), the moving iron core moves to drive the linkage (52) to rotate so that the tripping assembly (51) is tripped, and the tripping of the tripping assembly (51) drives the operating piece (54) to move to press the pressing piece (3).

Images