A switching device

Abstract

This utility model belongs to the field of low-voltage electrical technology, specifically disclosing a switchgear. The switchgear provided by this utility model has an indicator window on its housing. An electromagnetic trip unit can simultaneously drive the latch and the indicator to rotate, causing the operating mechanism to trip. The trip latch then engages with a stop, keeping the operating mechanism in a tripped state. Simultaneously, the indicator is positioned at the indicator window to indicate that the switchgear has tripped due to a short circuit. A thermal-magnetic trip unit can drive the latch to rotate, causing the operating mechanism to trip. The trip latch then engages with a stop, keeping the operating mechanism in a tripped state. In this case, the indicator does not rotate, and the indicator window does not display the indicator, indicating that the switchgear has tripped due to an overload. This switchgear can clearly distinguish between short-circuit tripping and overload tripping faults, facilitating operator inspection and maintenance. Furthermore, the indicator is located inside the housing, eliminating the need for additional accessories and preventing an increase in the size of the switchgear.

Description

Technical Field

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

[0002] Existing motor protection switchgear generally features fault tripping protection functions such as short circuit and overload. The fault tripping indication uses an internal interlocking structure to keep the handle in the Trip position between ON and OFF. However, the existing switchgear structure can only indicate fault tripping, but cannot clearly distinguish the type of fault causing the tripping. In practical applications, if the application or special certification test requires clear fault type identification, additional accessories are needed to display short circuit and overload tripping on the switchgear. This not only increases material control costs but also raises operating costs. Furthermore, combined switchgear is larger than individual switchgear, requiring more installation space. Utility Model Content

[0003] The purpose of this utility model is to provide a switchgear that can display short-circuit tripping and overload tripping without increasing the size of the switchgear or the installation space required.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] A switching device, comprising:

[0006] The outer casing has a support inside and an indicator window on its surface.

[0007] An operating mechanism, located inside the housing, includes a latch and a trip latch. The latch and the trip latch are rotatably connected to the bracket. When the operating mechanism is in the closed state, the latch and the trip latch engage.

[0008] A stopper, which is connected to the bracket;

[0009] The indicator is rotatably connected to the bracket;

[0010] An electromagnetic trip unit is disposed inside the housing and is used to drive the latch to rotate and the indicator to rotate. The rotation of the latch causes the trip latch to unlock from the latch, and the rotation of the trip latch engages with the stop, so that the operating mechanism is in a disengaged state. At the same time, the indicator is placed at the indicator window.

[0011] A thermomagnetic trip unit is disposed inside the housing and is used to drive the latch to rotate. The rotation of the latch unlocks the trip latch from the latch, and the rotation of the trip latch engages with the stop, so that the operating mechanism is in a disengaged state.

[0012] As an optional technical solution for the aforementioned switchgear, the bracket is provided with a support member, and the support member has a rotating shaft on each of its opposite sides. The indicator has a connecting seat on one side, and the connecting seat has a mounting groove. The rotating shaft is rotatably connected to the groove wall of the mounting groove.

[0013] As an optional technical solution for the aforementioned switching device, the support member is provided with a first limiting surface, and the bottom of the mounting groove abuts against the first limiting surface to limit the rotation of the indicator member around a first direction. A limiting elastic member is connected between the indicator member and the support member, and the limiting elastic member limits the rotation of the indicator member around a second direction, wherein the second direction is opposite to the first direction, and the second direction is the direction in which the electromagnetic trip unit drives the indicator member to rotate.

[0014] As an optional technical solution for the aforementioned switching device, the support member has one side of the rotating shaft that is clearance-fitted with the first groove wall of the mounting groove, the other side of the support member with the rotating shaft has a sliding surface, the second groove wall of the mounting groove has a slider, the slider abuts against the sliding surface, and when the indicator rotates, the slider can slide relative to the sliding surface.

[0015] As an optional technical solution for the aforementioned switchgear, the second side wall of the mounting groove is provided with a limiting block, and the other side of the support member where the rotating shaft is located is provided with a limiting part. When the electromagnetic trip device drives the indicator to rotate into position, the limiting block engages with the limiting part.

[0016] As an optional technical solution for the aforementioned switching device, the support member has a boss on the other side of the rotating shaft, and the limiting part includes a limiting groove and a guide slope disposed on the boss. The guide slope connects the side of the support member and the groove wall of the limiting groove. When the indicator rotates, the limiting block slides into the limiting groove along the guide slope.

[0017] As an optional technical solution for the aforementioned switchgear, the connector is provided with a first overlapping portion, and the latch is provided with a second overlapping portion;

[0018] The electromagnetic release device includes a push plate and an electromagnetic drive assembly. The push plate is slidably connected to the housing. The push plate is provided with a third overlapping part and a fourth overlapping part. The third overlapping part is connected to the first overlapping part, and the fourth overlapping part is connected to the second overlapping part. The electromagnetic drive assembly is used to drive the push plate to slide, so that the push plate drives the latch to rotate and the indicator to rotate.

[0019] As an optional technical solution for the aforementioned switching device, the operating mechanism and the indicator are disposed on both sides of the bracket;

[0020] The operating mechanism further includes a gear rocker arm and an upper connecting rod. The gear rocker arm is rotatably connected to the bracket. The first end of the upper connecting rod is hinged to the gear rocker arm, and the second end of the upper connecting rod is hinged to the jump buckle. The bracket is provided with a first sliding groove and a second sliding groove. The first end of the upper connecting rod passes through the first sliding groove, and the second end of the upper connecting rod passes through the second sliding groove.

[0021] The first end of the indicator protrudes a reset block towards the side of the bracket. The second end of the indicator can be placed at the indicator window. When the second end of the indicator is placed at the indicator window, the first end of the upper connecting rod stops the reset block. When the operating mechanism switches from the tripped state to the open state, the gear rocker rotates, causing the first end of the upper connecting rod to drive the indicator to rotate around the first direction, and the second end of the indicator moves away from the indicator window.

[0022] As an optional technical solution for the aforementioned switching device, the reset block has a clearance surface on the side facing the second end of the indicator. The shape of the clearance surface matches the movement trajectory of the first end of the upper connecting rod. When the second end of the indicator is in a state away from the indicator window, the first end of the upper connecting rod can move along the clearance surface when the operating mechanism switches between the open state and the closed state.

[0023] As an optional technical solution for the aforementioned switchgear, the stop includes a stop body, one end of which is connected to the bracket, and the other end of which is set at an angle to the bracket. A stop block is provided on the side of the other end of the stop body away from the bracket, and the jumper can pass over the stop block and engage with the stop block.

[0024] The beneficial effects of this utility model are:

[0025] The switchgear provided by this utility model has an indicator window on its housing. The electromagnetic trip unit can simultaneously drive the latch to rotate and the indicator to rotate, causing the operating mechanism to trip. The trip latch rotates and engages with the stop, keeping the operating mechanism in the tripped state. At the same time, the indicator is placed at the indicator window to indicate that the switchgear has tripped due to a short circuit. The thermal magnetic trip unit can drive the latch to rotate, causing the operating mechanism to trip. The trip latch rotates and engages with the stop, keeping the operating mechanism in the tripped state. In this case, the indicator does not rotate, and the indicator is not displayed at the indicator window, indicating that the switchgear has tripped due to an overload. This switchgear can clearly distinguish between short circuit tripping faults and overload tripping faults, making it convenient for operators to check and perform maintenance. Moreover, the indicator is set inside the housing, eliminating the need for additional accessories and not increasing the size of the switchgear, thus eliminating the need to increase the installation space of the switchgear. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the switching device provided in this embodiment of the utility model;

[0027] Figure 2 This is a schematic diagram of the internal structure of the switching device provided in this embodiment of the utility model;

[0028] Figure 3 This is a schematic diagram of the operating mechanism in the open state provided in this embodiment of the utility model;

[0029] Figure 4 This is a schematic diagram of the state structure of the indicator when the operating mechanism is in the open state, provided by an embodiment of this utility model;

[0030] Figure 5 This is a schematic diagram of the operating mechanism in the disengaged state provided in this embodiment of the utility model;

[0031] Figure 6 This is a structural schematic diagram showing the positional relationship between the stop and the bracket provided in this embodiment of the utility model;

[0032] Figure 7 This is a schematic diagram of the structure of the stop provided in this embodiment of the utility model;

[0033] Figure 8 This is a schematic diagram of the structure of the bracket provided in an embodiment of the present utility model;

[0034] Figure 9 This is a schematic diagram of the state structure of the indicator when the operating mechanism is in an overload tripping state, as provided in this embodiment of the utility model.

[0035] Figure 10 This is a schematic diagram of the state structure of the indicator when the operating mechanism is in a short-circuit tripping state according to an embodiment of the present utility model;

[0036] Figure 11 This is a schematic diagram showing the positional structure between the indicator, the bracket, and the operating mechanism provided in this embodiment of the utility model;

[0037] Figure 12 This is a structural schematic diagram of the bracket, indicator, and support provided in an embodiment of the present utility model;

[0038] Figure 13 This is a first axonometric view of the indicator provided in this embodiment of the utility model;

[0039] Figure 14 This is a first axonometric view of the support member provided in an embodiment of the present utility model;

[0040] Figure 15 This is a second axonometric view of the indicator provided in this embodiment of the utility model;

[0041] Figure 16 This is a second axonometric view of the support member provided in an embodiment of the present invention;

[0042] Figure 17 This is a schematic diagram of the structure of the push plate, indicator and locking element provided in the embodiment of this utility model.

[0043] In the picture:

[0044] 1. Housing; 2. Bracket; 3. Operating mechanism; 4. Stop; 5. Indicator; 6. Electromagnetic trip unit; 7. Thermomagnetic trip unit; 8. Support component; 9. Limiting elastic component; 10. Operating handle;

[0045] 11. Indicator window;

[0046] 21. First slide groove; 22. Second slide groove; 23. Insertion interface; 24. Connection notch;

[0047] 31. Lock; 311. Second lap joint; 32. Jumper lock; 33. Gear rocker arm; 34. Upper connecting rod; 35. Lower connecting rod; 36. Push rod; 37. Push rod torsion spring;

[0048] 41. Stop body; 42. Stop block; 43. Limiting rib;

[0049] 51. Connecting seat; 511. Mating hole; 512. First slot; 52. Mounting slot; 53. Slider; 54. Limiting block; 55. First overlapping part; 56. Reset block; 561. Clearance surface; 57. Display block; 58. Protrusion;

[0050] 61. Push plate; 62. Third lap joint; 63. Fourth lap joint;

[0051] 81. Rotating shaft; 82. First limiting surface; 83. Sliding surface; 84. Limiting part; 841. Limiting groove; 842. Guide slope; 85. Boss; 86. Connecting groove; 87. Connecting rib; 88. Second slot. Detailed Implementation

[0052] 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.

[0053] 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.

[0054] 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.

[0055] In the description of this embodiment, the terms "upper," "lower," "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.

[0056] This embodiment provides a switching device for motor protection. For example... Figures 1 to 4As shown, the switchgear includes a housing 1, an operating mechanism 3, a stop 4, an indicator 5, an electromagnetic trip unit 6, and a thermal-magnetic trip unit 7. A bracket 2 is located inside the housing 1, and an indicator window 11 is provided on the housing 1. The operating mechanism 3 is located inside the housing 1 and includes a latch 31 and a trip latch 32. The latch 31 and trip latch 32 are rotatably connected to the bracket 2. When the operating mechanism 3 is in the closed state, the latch 31 and trip latch 32 are engaged. The stop 4 is connected to the bracket 2, and the indicator 5 is rotatably connected to the bracket 2. The electromagnetic trip unit 6 is located inside the housing 1 and is used to drive the latch 31 and the indicator 5 to rotate. The rotation of the latch 31 unlocks the trip latch 32 from the latch 31, and the rotation of the trip latch 32 engages with the stop 4, putting the operating mechanism 3 in the tripped state. At the same time, the indicator 5 is positioned at the indicator window 11. The thermal magnetic trip unit 7 is installed inside the housing 1. The thermal magnetic trip unit 7 is used to drive the latch 31 to rotate. The rotation of the latch 31 unlocks the trip latch 32 from the latch 31, and the rotation of the trip latch 32 engages with the stop 4, so that the operating mechanism 3 is in the tripped state.

[0057] The housing 1 is provided with an indicator window 11. The electromagnetic trip unit 6 can simultaneously drive the latch 31 to rotate and the indicator 5 to rotate, causing the operating mechanism 3 to trip. The trip latch 32 rotates and engages with the stop 4, keeping the operating mechanism 3 in the tripped state. At the same time, the indicator 5 is placed at the indicator window 11 to indicate that the switchgear has a short circuit trip. The thermal magnetic trip unit 7 can drive the latch 31 to rotate, causing the operating mechanism 3 to trip. The trip latch 32 rotates and engages with the stop 4, keeping the operating mechanism 3 in the tripped state. In this case, the indicator 5 does not rotate, and the indicator 5 is not displayed at the indicator window 11, indicating that the switchgear has an overload trip. This switchgear can clearly distinguish between short circuit trip faults and overload trip faults, making it convenient for operators to check and perform maintenance. Moreover, the indicator 5 is set inside the housing 1, eliminating the need for additional accessories and not increasing the size of the switchgear, thus eliminating the need to increase the installation space of the switchgear.

[0058] In some embodiments, such as Figure 3 and Figure 4As shown, the operating mechanism 3 also includes a gear lever 33 and an upper connecting rod 34. The gear lever 33 is rotatably connected to the bracket 2, and a gear torsion spring connects the gear lever 33 and the bracket 2. The first end of the upper connecting rod 34 is hinged to the gear lever 33, and the second end of the upper connecting rod 34 is hinged to the jump buckle 32. The bracket 2 is provided with a first sliding groove 21 and a second sliding groove 22. The first end of the upper connecting rod 34 passes through the first sliding groove 21, and the second end of the upper connecting rod 34 passes through the second sliding groove 22. When the gear lever 33 rotates, the first end of the upper connecting rod 34 slides along the first sliding groove 21, and the second end of the upper connecting rod 34 slides along the second sliding groove 22, which limits the rotation of the gear lever 33 and realizes the rotatable connection between the jump buckle 32 and the bracket 2. The shape of the first sliding groove 21 is adapted to the movement trajectory of the first end of the upper connecting rod 34, and the shape of the second sliding groove 22 is adapted to the movement trajectory of the second end of the upper connecting rod 34.

[0059] The operating mechanism 3 also includes a lower connecting rod 35 and a push rod 36. The push rod 36 is rotatably connected to the bracket 2. One end of the lower connecting rod 35 is hinged to the jump buckle 32, and the other end of the lower connecting rod 35 is hinged to the push rod 36. A push rod torsion spring 37 connects the push rod 36 and the bracket 2. The gear rocker arm 33 and... Figure 2 The operating handle 10 of the switchgear shown is connected to the transmission. Rotating the operating handle 10 can drive the gear lever 33 to rotate, thereby putting the operating mechanism 3 into the closed or open state.

[0060] When the operating handle 10 is rotated to the closed position, the rotation of the operating handle 10 drives the gear rocker arm 33 to rotate, the jump buckle 32 is limited by the lock buckle 31, the first end of the upper connecting rod 34 moves along the first slide groove 21, the second end of the upper connecting rod 34 moves along the second slide groove 22, the jump buckle 32 rotates along the limit point of the lock buckle 31, the jump buckle 32 drives the lower connecting rod 35 to rotate, the lower connecting rod 35 pulls the top rod 36, the top rod 36 rotates, the top rod torsion spring 37 connected to the top rod 36 stores energy, the gear torsion spring connected to the gear rocker arm 33 stores force, and the operating mechanism 3 closes after the upper connecting rod 34 passes the dead point. Figure 3 and Figure 4 These are all schematic diagrams showing the operating mechanism 3 in the open state. Continue to refer to... Figure 3 and Figure 4 As shown, when the operating handle 10 is rotated to the open position, the latch 31 engages with the trip latch 32, the gear lever 33 rotates, causing the upper connecting rod 34 to pass the dead point, the push rod torsion spring 37 releases energy to drive the push rod 36 to rotate, the push rod 36 drives the lower connecting rod 35 to rotate, and the gear torsion spring releases energy to drive the gear lever 33 to the open position. During normal closing and opening, the stop 4 and the indicator 5 do not cooperate with the operating mechanism 3.

[0061] like Figure 5As shown, when the operating mechanism 3 trips, including short-circuit tripping and overload tripping, the trip lever 32 rotates and engages with the stop 4. Specifically, during tripping, the latch 31 rotates, unlocking the latch 31 from the trip lever 32. The push rod torsion spring 37 releases energy, driving the push rod 36 to rotate. The push rod 36 drives the trip lever 32 to rotate via the lower connecting rod 35. The trip lever 32 engages with the stop 4, preventing the trip lever 32 from swinging back under the force of the gear torsion spring, thus putting the operating mechanism 3 in the tripped state.

[0062] In some embodiments, such as Figure 6 and Figure 7 As shown, the stop 4 and the operating mechanism 3 are located on the same side of the bracket 2. The stop 4 includes a stop body 41. One end of the stop body 41 is connected to the bracket 2, and the other end of the stop body 41 is set at an angle to the bracket 2. The other end of the stop body 41 is provided with a stop block 42 on the side away from the bracket 2. The jump buckle 32 can pass over the stop block 42 and engage with the stop block 42. Since the other end of the stop body 41 is set at an angle to the bracket 2, the jump buckle 32 squeezes the stop block 42 during rotation, causing the other end of the stop body 41 to undergo elastic deformation and move toward the bracket 2. The jump buckle 32 can pass over the stop block 42. After no pressure is applied to the stop block 42, the other end of the stop body 41 returns to its original position. Under the action of the gear torsion spring, the jump buckle 32 swings back and is stopped by the stop block 42. The force applied by the gear torsion spring to the jump buckle 32 is insufficient to make the jump buckle 32 pass over the stop block 42, thereby putting the operating mechanism 3 in a disengaged state. The structure of the stop 4 is simple.

[0063] Optionally, such as Figure 7 and Figure 8 As shown, one end of the stop body 41 is inserted into the bracket 2. Specifically, a T-shaped limiting rib 43 protrudes from one end of the stop body 41 towards the bracket 2. The vertical portion of the limiting rib 43 is connected to the bracket 2, and an insertion groove is formed between the horizontal portion of the limiting rib 43 and the stop body 41. One end of the bracket 2 is provided with an insertion interface 23, and the vertical portion of the limiting rib 43 is inserted into the insertion interface 23. The horizontal portion of the limiting rib 43 and the stop body 41 are positioned on both sides of the bracket 2. One end of the stop body 41 is fitted to the bracket 2 to improve the stability of the connection between the limiting rib 43 and the bracket 2.

[0064] See Figure 5 and Figure 9As shown, when the switchgear needs to be re-closed, it is necessary to first switch the switchgear from the tripped state to the open state, so that the latch 31 and the trip latch 32 can re-engage. Specifically, when the operating mechanism 3 switches from the tripped state to the open state, the operating handle 10 is rotated. The operating handle 10 drives the gear rocker arm 33 to rotate. The gear rocker arm 33 drives the trip latch 32 to rotate through the upper connecting rod 34. The trip latch 32 overcomes the locking force of the stop 4 and separates from the stop 4. The top rod torsion spring 37 continues to release energy, causing the trip latch 32 to rotate toward the latch 31, so that the trip latch 32 and the latch 31 can engage. Figure 9 This is a schematic diagram of the indicator of the operating mechanism 3 in an overload tripped state. Figure 10 This is a schematic diagram showing the status of the indicator 5 when the operating mechanism 3 is in the short-circuit tripped state. If it is in the short-circuit tripped state, when switching from the tripped state to the open state, the operating mechanism 3 drives the indicator 5 to reset, i.e., from... Figure 10 The state shown has been restored to Figure 9 The state shown indicates that indicator 5 is far from indicator window 11 and is no longer displayed.

[0065] like Figure 5 , Figure 10 and Figure 11 As shown, the operating mechanism 3 and the indicator 5 are disposed on both sides of the bracket 2. To enable the operating mechanism 3 to drive the indicator 5 to reset, in some embodiments, a reset block 56 protrudes from the first end of the indicator 5 towards the side of the bracket 2, and the second end of the indicator 5 can be positioned at the indicator window 11. When the second end of the indicator 5 is positioned at the indicator window 11, the first end of the upper connecting rod 34, which passes through the first sliding groove 21, stops the reset block 56. When the operating mechanism 3 switches from the tripped state to the open state, the gear lever 33 rotates, causing the first end of the upper connecting rod 34 to drive the indicator 5 to rotate around a first direction, and the second end of the indicator 5 moves away from the indicator window 11, thus resetting the indicator 5. The direction in which the electromagnetic trip unit 6 drives the indicator 5 to rotate is the second direction, and the first direction is opposite to the second direction. In this embodiment, the upper connecting rod 34 limits the range of rotation of the indicator 5 around the second direction by limiting the indicator 5. The upper connecting rod 34 abuts against the reset block 56 by passing through the first sliding groove 21. When the operating mechanism 3 switches from the tripped state to the open state, the upper connecting rod 34 can also drive the indicator 5 to reset, which reduces the number of parts and thus reduces the cost and simplifies the structure of the switchgear.

[0066] The other end of the indicator 5 is provided with a display block 57 facing the indicator window 11. When the indicator 5 is in the indicating state, the display block 57 can cover the indicator window 11. In order to facilitate observation of the status of the switching device, the display block 57 has a distinct color, such as red.

[0067] The reset block 56 has a clearance surface 561 on the side facing the second end of the indicator 5. The shape of the clearance surface 561 matches the movement trajectory of the first end of the upper connecting rod 34. When the second end of the indicator 5 is in a state away from the indicator window 11, and the operating mechanism 3 switches between the open and closed states, the first end of the upper connecting rod 34 can move along the clearance surface 561. During normal opening and closing, the indicator 5 does not interfere with the movement of the upper connecting rod 34, and the indicator 5 is not displayed in the indicator window 11, indicating that the switchgear is in a normal working state.

[0068] In some embodiments, such as Figures 12 to 14 As shown, the bracket 2 is provided with a support member 8, and rotating shafts 81 are respectively provided on opposite sides of the support member 8. A connecting seat 51 is provided on one side of the indicator 5, and a mounting groove 52 is provided on the connecting seat 51. The rotating shaft 81 is rotatably connected to the groove wall of the mounting groove 52. Optionally, the connecting seat 51 is provided with a mating hole 511 communicating with the mounting groove 52. The wall of the mating hole 511 has a notch in the shape of a flared mouth. The rotating shaft 81 is inserted into the mating hole 511 through the notch, realizing the rotatable connection between the rotating shaft 81 and the groove wall of the mounting groove 52. This structure realizes the coupling connection between the indicator 5 and the support member 8, improving the stability of the rotatable connection of the indicator 5 and the compactness of the rotatable connection structure of the indicator 5.

[0069] Part of the support member 8 is placed within the mounting groove 52, and the portion of the support member 8 located outside the mounting groove 52 is provided with a connecting groove 86, within which a connecting rib 87 is provided, such as... Figure 8 The bracket 2 shown has a connection notch 24. The bracket 2 is inserted into the connection groove 86, and the connecting rib 87 is inserted into the connection notch 24, thereby realizing the connection between the support member 8 and the bracket 2.

[0070] The support member 8 is provided with a first limiting surface 82. The bottom of the mounting groove 52 abuts against the first limiting surface 82 to limit the rotation of the indicator 5 around a first direction. A limiting elastic member 9 is connected between the indicator 5 and the support member 8, and the limiting elastic member 9 limits the rotation of the indicator 5 around a second direction. The limiting elastic member 9 and the first limiting surface 82 cooperate to restrict the indicator 5, so that the indicator 5 is in a relatively balanced state without the action of other external forces, and to prevent the indicator 5 from swinging back and forth. When the indicator 5 rotates around the second direction and is in the indicating state, the limiting elastic member 9 stores energy. However, the energy stored in the limiting elastic member 9 is not enough to reset the indicator 5 around the first direction. The aforementioned upper connecting rod 34 is still needed to drive the indicator 5 to reset.

[0071] Optionally, the connecting seat 51 of the indicator 5 is provided with a first slot 512, the support member 8 is provided with a second slot 88, and the limiting elastic member 9 is a torsion spring. The limiting elastic member 9 is sleeved on the support member 8, with one end of the limiting elastic member 9 engaged in the first slot 512 and the other end of the limiting elastic member 9 engaged in the second slot 88. During the rotation of the indicator 5 relative to the support member 8, the limiting elastic member 9 stores or releases energy.

[0072] like Figure 15 and Figure 16 As shown, one side of the support member 8 with a rotating shaft 81 is clearance-fitted with the first groove wall of the mounting groove 52. The other side of the support member 8 with the rotating shaft 81 is provided with a sliding surface 83. The second groove wall of the mounting groove 52 is provided with a slider 53, which abuts against the sliding surface 83. When the indicator 5 rotates, the slider 53 can slide relative to the sliding surface 83. The indicator 5 has a certain amount of axial movement relative to the support member 8 along the rotating shaft 81 to prevent the indicator 5 from getting stuck during rotation. The cooperation between the slider 53 and the sliding surface 83 reduces the contact area between the mounting groove 52 and the support member 8, thereby reducing the frictional resistance between the indicator 5 and the support member 8 during rotation and ensuring the smoothness of the rotation of the indicator 5.

[0073] Optionally, continue to refer to Figure 13 As shown, the first groove wall of the mounting groove 52 is provided with a protrusion 58. The protrusion 58 and one side of the support member 8 with the rotating shaft 81 are clearance-fitted to reduce the contact area between the support member 8 and the first groove wall of the mounting groove 52, thereby reducing the frictional resistance between the indicator 5 and the support member 8 during the rotation process and ensuring the smooth rotation of the indicator 5.

[0074] After indicator 5 has rotated to its position in the second direction, it needs to be in the display state. Continue to refer to... Figure 15 and Figure 16 As shown, in some embodiments, a limiting block 54 is provided on the second side wall of the mounting groove 52, and a limiting part 84 is provided on the other side of the support member 8 where the rotating shaft 81 is located. When the electromagnetic trip device 6 drives the indicator 5 to rotate into position, the limiting block 54 engages with the limiting part 84. When the upper connecting rod 34 rotates to drive the indicator 5 to reset, the force of the upper connecting rod 34 rotation can separate the limiting block 54 from the limiting part 84, thereby causing the indicator 5 to be in a state of no longer indicating.

[0075] Optionally, the support member 8 has a boss 85 on the other side of the rotating shaft 81. The limiting part 84 includes a limiting groove 841 and a guide slope 842 disposed on the boss 85. The guide slope 842 connects the side of the support member 8 and the groove wall of the limiting groove 841. When the indicator 5 rotates, the limiting block 54 slides into the limiting groove 841 along the guide slope 842, so that the indicator 5 is in the indicating state. When the upper connecting rod 34 rotates to drive the indicator 5 to reset, the force of the upper connecting rod 34 rotation can cause the limiting block 54 to slide out of the limiting groove 841, thereby so that the indicator 5 is in the no-indicating state. In some other embodiments, the limiting part 84 includes an elastic buckle. The elastic buckle is connected to the side of the support member 8. When the indicator 5 rotates, it squeezes the elastic buckle, causing the elastic buckle to deform, and the indicator 5 can pass over the elastic buckle. After the indicator 5 passes over the elastic buckle, it is stopped by the elastic buckle, so that the indicator 5 is in the indicating state.

[0076] When a short-circuit current occurs, the electromagnetic trip unit 6 actuates, causing the latch 31 to rotate and the indicator 5 to rotate. For example... Figure 17 As shown, in some embodiments, the connecting seat 51 is provided with a first overlapping portion 55, and the latch 31 is provided with a second overlapping portion 311. The electromagnetic trip unit 6 includes a push plate 61 and an electromagnetic drive assembly. The push plate 61 is slidably connected to the housing 1. The push plate 61 is provided with a third overlapping portion 62 and a fourth overlapping portion 63. The third overlapping portion 62 is connected to the first overlapping portion 55, and the fourth overlapping portion 63 is connected to the second overlapping portion 311. The electromagnetic drive assembly is used to drive the push plate 61 to slide, so that the push plate 61 drives the latch 31 to rotate and the indicator 5 to rotate, realizing the synchronous action of the latch 31 and the indicator 5. When the short circuit trips, the indicator 5 is in the indicating state. Moreover, the latch 31 and the indicator 5 are controlled to move simultaneously by the same component, which reduces the number of components and improves the stability of the switching equipment operation. The structure of the electromagnetic drive assembly and the cooperation structure between the electromagnetic drive assembly and the push plate 61 are existing technologies and will not be described in detail here.

[0077] Optionally, the first overlapping part 55 includes a first overlapping block disposed on the connecting seat 51, and the third overlapping part 62 includes a third overlapping block connected to the push plate 61. The third overlapping block is connected to the first overlapping block. The push plate 61 moves linearly under the action of the electromagnetic drive assembly. The third overlapping block drives the first overlapping block to rotate, thereby driving the indicator 5 to rotate.

[0078] The second overlapping part 311 includes a second overlapping block disposed on the latch 31, and the fourth overlapping part 63 includes an overlapping hole disposed on the push plate 61. The second overlapping block is placed in the overlapping hole and abuts against the hole wall of the overlapping hole. The hole wall of the overlapping hole is adapted to the rotation trajectory of the second overlapping block. The push plate 61 moves linearly under the action of the electromagnetic drive assembly, driving the second overlapping block to rotate, thereby driving the latch 31 to rotate.

[0079] Other structures of the switchgear are existing technologies and will not be described in detail here.

[0080] 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 switching device, characterized in that, include: The outer casing (1) has a bracket (2) inside it and an indicator window (11) on it. The operating mechanism (3) is located inside the housing (1) and includes a latch (31) and a trip latch (32). The latch (31) and the trip latch (32) are rotatably connected to the bracket (2). When the operating mechanism (3) is in the closed state, the latch (31) and the trip latch (32) overlap. Stop (4), the stop (4) is connected to the bracket (2); The indicator (5) is rotatably connected to the bracket (2); An electromagnetic trip unit (6) is installed inside the housing (1) to drive the latch (31) to rotate and the indicator (5) to rotate. The rotation of the latch (31) causes the jumper (32) to unlock from the latch (31), and the rotation of the jumper (32) engages with the stop (4), so that the operating mechanism (3) is in the tripped state. At the same time, the indicator (5) is placed at the indicator window (11). A thermomagnetic trip unit (7) is installed inside the housing (1) and is used to drive the latch (31) to rotate. The rotation of the latch (31) causes the jumper (32) to unlock from the latch (31), and the rotation of the jumper (32) engages with the stop (4), so that the operating mechanism (3) is in the tripped state.

2. The switching device according to claim 1, characterized in that, The bracket (2) is provided with a support member (8), and the support member (8) is provided with a rotating shaft (81) on each of its opposite sides. The indicator (5) is provided with a connecting seat (51) on one side, and the connecting seat (51) is provided with a mounting groove (52). The rotating shaft (81) is rotatably connected to the groove wall of the mounting groove (52).

3. The switching device according to claim 2, characterized in that, The support member (8) is provided with a first limiting surface (82), and the bottom of the mounting groove (52) abuts against the first limiting surface (82) to limit the rotation of the indicator (5) around the first direction. A limiting elastic member (9) is connected between the indicator (5) and the support member (8). The limiting elastic member (9) limits the rotation of the indicator (5) around the second direction, wherein the second direction is opposite to the first direction and the second direction is the direction in which the electromagnetic trip device (6) drives the indicator (5) to rotate.

4. The switching device according to claim 2, characterized in that, The support member (8) has one side of the rotating shaft (81) that is in clearance fit with the first groove wall of the mounting groove (52). The other side of the support member (8) with the rotating shaft (81) has a sliding surface (83). The second groove wall of the mounting groove (52) has a slider (53). The slider (53) abuts against the sliding surface (83), and when the indicator (5) rotates, the slider (53) can slide relative to the sliding surface (83).

5. The switching device according to claim 2, characterized in that, The second side wall of the mounting groove (52) is provided with a limiting block (54), and the other side of the support member (8) with the rotating shaft (81) is provided with a limiting part (84). When the electromagnetic trip device (6) drives the indicator (5) to rotate into place, the limiting block (54) engages with the limiting part (84).

6. The switching device according to claim 5, characterized in that, The support member (8) has a boss (85) on the other side of the rotating shaft (81). The limiting part (84) includes a limiting groove (841) and a guide slope (842) disposed on the boss (85). The guide slope (842) connects the side of the support member (8) and the groove wall of the limiting groove (841). When the indicator (5) rotates, the limiting block (54) slides into the limiting groove (841) along the guide slope (842).

7. The switching device according to claim 2, characterized in that, The connecting seat (51) is provided with a first overlapping part (55), and the latch (31) is provided with a second overlapping part (311); The electromagnetic trip unit (6) includes a push plate (61) and an electromagnetic drive assembly. The push plate (61) is slidably connected to the housing (1). The push plate (61) is provided with a third overlapping part (62) and a fourth overlapping part (63). The third overlapping part (62) is connected to the first overlapping part (55), and the fourth overlapping part (63) is connected to the second overlapping part (311). The electromagnetic drive assembly is used to drive the push plate (61) to slide, so that the push plate (61) drives the latch (31) to rotate and the indicator (5) to rotate.

8. The switching device according to claim 1, characterized in that, The operating mechanism (3) and the indicator (5) are disposed on both sides of the bracket (2); The operating mechanism (3) further includes a gear swing rod (33) and an upper connecting rod (34). The gear swing rod (33) is rotatably connected to the bracket (2). The first end of the upper connecting rod (34) is hinged to the gear swing rod (33), and the second end of the upper connecting rod (34) is hinged to the jump buckle (32). The bracket (2) is provided with a first sliding groove (21) and a second sliding groove (22). The first end of the upper connecting rod (34) passes through the first sliding groove (21), and the second end of the upper connecting rod (34) passes through the second sliding groove (22). The first end of the indicator (5) has a reset block (56) protruding on the side facing the bracket (2). The second end of the indicator (5) can be placed at the indicator window (11). When the second end of the indicator (5) is placed at the indicator window (11), the first end of the upper connecting rod (34) stops the reset block (56). When the operating mechanism (3) switches from the tripped state to the open state, the gear swing rod (33) rotates, causing the first end of the upper connecting rod (34) to drive the indicator (5) to rotate around the first direction, and the second end of the indicator (5) moves away from the indicator window (11).

9. The switching device according to claim 8, characterized in that, The reset block (56) has a clearance surface (561) on the side facing the second end of the indicator (5). The shape of the clearance surface (561) matches the movement trajectory of the first end of the upper connecting rod (34). When the second end of the indicator (5) is in a state away from the indicator window (11), the first end of the upper connecting rod (34) can move along the clearance surface (561) when the operating mechanism (3) switches between the open state and the closed state.

10. The switching device according to claim 1, characterized in that, The stop (4) includes a stop body (41), one end of which is connected to the bracket (2), and the other end of which is set at an angle to the bracket (2). A stop block (42) is provided on the side of the other end of the stop body (41) away from the bracket (2). The jump buckle (32) can pass over the stop block (42) and engage with the stop block (42).

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