Isolation switch

Abstract

The utility model belongs to the technical field of low-voltage electric appliances, and discloses an isolating switch. The isolating switch comprises an operating mechanism, a static contact mechanism and a moving contact mechanism. The operating mechanism is rotatably arranged around a first direction, a first limiting piece is arranged on the operating mechanism, the moving contact mechanism is connected with the operating mechanism, and a second limiting piece is arranged on the moving contact mechanism; the operating mechanism rotates to drive the moving contact mechanism to move along a first direction, so that the moving contact mechanism and the static contact mechanism are contacted and conducted, and the isolating switch is switched on, or the moving contact mechanism and the static contact mechanism are disconnected, and the isolating switch is switched off; during normal opening, the second limiting piece is separated from the first limiting piece, and during abnormal opening, the second limiting piece is clamped with the first limiting piece to limit the operation mechanism to rotate around the first direction, so that warning of circuit abnormity can be realized, and the operation safety of operators is improved.

Description

disconnect switch Technical Field

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

[0002] A disconnecting switch is used to disconnect or close a circuit. After the circuit is disconnected, a reliable insulation gap is established, separating the equipment or line that needs maintenance from the power supply with a clear disconnection point to ensure the safety of maintenance personnel and equipment.

[0003] In the existing technology, without auxiliary contacts, when a circuit problem causes the moving and stationary contacts to fail to disconnect (i.e., the moving and stationary contacts become welded), the product handle can still be turned to close and open normally. However, the internal contacts of the product are always in a closed state. The existing switching device cannot accurately determine the current position of the moving contact through indication, which can easily lead to misjudgment by the operator. This can cause the operator to perform operations when the circuit is closed, posing a serious threat to the operator's personal safety.

[0004] Therefore, there is an urgent need for a disconnecting switch to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this utility model is to provide an isolating switch that can prevent the corresponding operating mechanism from operating when a circuit problem causes the moving and stationary contacts to fuse, thereby providing a warning of circuit abnormalities and improving the safety of operators.

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

[0007] A disconnecting switch includes an operating mechanism, a stationary contact mechanism, and a moving contact mechanism. The operating mechanism is rotatable about a first direction and is provided with a first limiting member. The moving contact mechanism is connected to the operating mechanism and is provided with a second limiting member.

[0008] The aforementioned operating mechanism rotates to drive the aforementioned moving contact mechanism to move along the first direction, so that the aforementioned moving contact mechanism makes contact with the aforementioned stationary contact mechanism to conduct electricity, thereby closing the aforementioned disconnecting switch; or it causes the aforementioned moving contact mechanism to separate from the aforementioned stationary contact mechanism, thereby opening the aforementioned disconnecting switch.

[0009] During normal circuit breaking, the second limiting member separates from the first limiting member. During abnormal circuit breaking, the second limiting member engages with the first limiting member to restrict the operation mechanism from rotating around the first direction.

[0010] Optionally, the first limiting member is disposed at one end of the operating mechanism facing the moving contact mechanism, and the first limiting member includes one of a limiting boss and a limiting groove. The second limiting member is disposed at one end of the moving contact mechanism facing the operating mechanism, and the second limiting member includes another of the limiting boss and the limiting groove. The limiting boss can be engaged in the limiting groove.

[0011] Optionally, the above-mentioned operating mechanism or the above-mentioned contact mechanism is provided with a plurality of protrusions, the plurality of protrusions are spaced apart around the first direction, the above-mentioned limiting groove is formed between two adjacent protrusions, and the above-mentioned limiting boss is correspondingly provided with the above-mentioned limiting groove.

[0012] Optionally, the above-mentioned operating mechanism includes:

[0013] The drive shaft has the aforementioned first limiting member at one end;

[0014] The driven component is connected to the moving contact mechanism, and the driven component has a limit hole, with one end of the drive shaft inserted into the limit hole;

[0015] An elastic element is connected to the drive shaft and the driven assembly; the rotation of the drive shaft drives the elastic element to store and release energy; when the elastic element releases energy, it can drive the driven assembly and the drive shaft to rotate in opposite directions to drive the moving contact mechanism to move along a first direction.

[0016] Optionally, the moving contact mechanism has a protruding post at one end facing the operating mechanism, and the second limiting member is disposed at one end of the protruding post, and the protruding post can be inserted into the limiting hole.

[0017] Optionally, the moving contact mechanism is provided with a recess, the protruding post is provided at the bottom of the recess, the sidewall of the recess is provided with a sliding block, at least a portion of the driven component is provided in the recess, the outer periphery of the driven component is provided with a spiral groove, the spiral groove extends spirally around a first direction, the sliding block is slidably connected to the spiral groove, and the driven component rotates to drive the moving contact mechanism to move along the first direction.

[0018] Optionally, the outer periphery of the drive shaft is provided with a first connecting portion, the driven component is provided with a second connecting portion, and the first connecting portion is connected to the second connecting portion.

[0019] Optionally, the driven component includes a mating shaft and a connecting rod. The mating shaft is connected to the moving contact mechanism, and the connecting rod is connected to the elastic element. The limiting hole includes a first hole on the mating shaft and a second hole on the connecting rod. The first end of the connecting rod is connected to the first end of the mating shaft. The second hole is coaxial with and communicates with the first hole. The first connecting portion includes a first protrusion and a second protrusion spaced apart along a first direction on the outer peripheral wall of the drive shaft. The second connecting portion includes a first limiting surface and a second limiting surface. The first limiting surface is located at the first end of the mating shaft, and the second limiting surface is located at the second end of the connecting rod. The drive shaft passes through the second hole and the first hole in sequence, and the second protrusion overlaps the second limiting surface, while the first protrusion overlaps the first limiting surface.

[0020] Optionally, it also includes a housing, in which the aforementioned operating mechanism, the aforementioned stationary contact mechanism, and the aforementioned moving contact mechanism are all disposed;

[0021] The aforementioned moving contact mechanism includes a mounting base and a plurality of moving contacts. The mounting base is slidably connected to the aforementioned housing, and the plurality of moving contacts are spaced apart on the mounting base.

[0022] The mounting base is provided with a plurality of first protruding ribs, which are disposed between adjacent moving contacts. The outer shell is provided with a plurality of partitions, which are disposed between adjacent moving contacts. The partitions are provided with a second protruding rib at one end facing the first protruding rib, and the second protruding rib extends to the side of the first protruding rib.

[0023] Optionally, the dimension of the second rib along the first direction is greater than the dimension of the first rib along the first direction.

[0024] Optionally, it also includes a housing, in which the operating mechanism, the stationary contact mechanism and the moving contact mechanism are all disposed, and the housing is provided with a plurality of heat dissipation holes.

[0025] The beneficial effects of this utility model are:

[0026] This utility model provides a disconnecting switch. By setting a first limiting member in the operating mechanism and a second limiting member in the moving contact mechanism, the moving and stationary contact mechanisms are in contact and conducting in the closed state, and disconnected in the normal open state. However, in an abnormal open state, such as when a circuit problem causes the moving and stationary contact mechanisms to weld together and become inseparable, the first and second limiting members interlock to restrict the rotation of the operating mechanism in a first direction. This achieves a rotation limit effect on the operating mechanism, preventing it from rotating to the open position in the abnormal open state. This serves as a warning to the operator, alerting them to the circuit malfunction and improving operator safety during operation. Attached Figure Description

[0027] Figure 1 is an exploded view of the disconnecting switch provided in a specific embodiment of this utility model;

[0028] Figure 2 is an isometric view of the disconnector switch in the closed state according to a specific embodiment of the present invention;

[0029] Figure 3 is an isometric view of the disconnector switch in the open state according to a specific embodiment of the present invention;

[0030] Figure 4 is an isometric view of the operating mechanism provided in a specific embodiment of this utility model;

[0031] Figure 5 is an exploded view of the operating mechanism provided in a specific embodiment of this utility model;

[0032] Figure 6 is a diagram illustrating the working process of the operating mechanism in a specific embodiment of this utility model, which rotates from the first position to the second position.

[0033] Figure 7 is an isometric view of the moving contact mechanism provided in a specific embodiment of this utility model;

[0034] Figure 8 is a partial structural schematic diagram of the disconnecting switch provided in a specific embodiment of this utility model;

[0035] Figure 9 is an isometric view of the upper housing provided in a specific embodiment of this utility model.

[0036] In the picture:

[0037] 10. Operating mechanism; 11. Drive shaft; 111. First limiting member; 1111. Limiting boss; 112. First connecting part; 1121. First protrusion; 1122. Second protrusion; 12. Driven component; 1201. Limiting hole; 12011. First hole; 12012. Second hole; 1202. Second connecting part; 12021. First limiting surface; 12022. Second limiting surface; 121. Mating shaft; 1211. Spiral groove; 1212. Annular groove; 1213. Slot; 1214. Limiting block; 122. Connecting rod; 1221. Assembly hole; 1222. Snap ring; 1223. Snap block; 13. Elastic element;

[0038] 20. Moving contact mechanism; 21. Mounting base; 211. Second limiting member; 2111. Limiting groove; 2112. Protrusion; 212. Protruding column; 213. Recess; 214. Sliding block; 215. First rib; 22. Moving contact;

[0039] 30. Stationary contact mechanism; 31. Stationary contact;

[0040] 40. Outer shell; 41. Lower shell; 411. Partition plate; 412. Second rib; 42. Upper shell; 421. Heat dissipation hole; 422. Through hole; 423. Third limiting surface;

[0041] 50. Arc extinguishing chamber. Detailed Implementation

[0042] 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.

[0043] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0044] 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.

[0045] 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.

[0046] The disconnecting switch provided by this utility model is described below with reference to Figures 1 to 9.

[0047] It should be noted that in this embodiment, the first direction is the X direction in Figure 1, which is also the extension direction of the rotation axis of the operating mechanism 10.

[0048] This embodiment provides an isolating switch for controlling the closing or opening of a circuit, thereby providing an alert for circuit abnormalities and improving the operational safety of operators.

[0049] Referring to Figures 1 to 3, specifically, the disconnecting switch includes an operating mechanism 10, a stationary contact mechanism 30, and a moving contact mechanism 20. The operating mechanism 10 is rotatable around a first direction and is provided with a first limiting member 111. The moving contact mechanism 20 is connected to the operating mechanism 10 and is provided with a second limiting member 211. The rotation of the operating mechanism 10 drives the moving contact mechanism 20 to move along the first direction, so that the moving contact mechanism 20 makes contact with the stationary contact mechanism 30 and conducts electricity. At this time, the disconnecting switch is in the closed state, or the moving contact mechanism 20 is disconnected from the stationary contact mechanism 30, so that the disconnecting switch is in the open state. During normal opening, the second limiting member 211 separates from the first limiting member 111. During abnormal opening, the second limiting member 211 engages with the first limiting member 111 to restrict the rotation of the operating mechanism 10 around the first direction.

[0050] In this embodiment, the disconnecting switch, by providing a first limiting member 111 on the operating mechanism 10 and a second limiting member 211 on the moving contact mechanism 20, ensures that the moving contact mechanism 20 and the stationary contact mechanism 30 are in contact and conducting in the closed state, and disconnected from the stationary contact mechanism 30 in the normal open state. However, in an abnormal open state, such as when a circuit problem causes the moving contact mechanism 20 and the stationary contact mechanism 30 to be welded together and unable to separate, the first limiting member 111 and the second limiting member 211 engage with each other to restrict the rotation of the operating mechanism 10 around a first direction. This achieves a rotational limiting effect on the operating mechanism 10 in the abnormal open state, preventing it from rotating to the open position, thus providing a warning to the operator of the circuit malfunction and improving operator safety during operation.

[0051] It should be noted that the normal tripping described above means that the moving contact mechanism 20 and the stationary contact mechanism 30 move away from each other and disconnect. The abnormal tripping described above occurs when a problem with the circuit causes the moving contact mechanism 20 and the stationary contact mechanism 30 to become welded together and unable to separate.

[0052] The first limiting member 111 is disposed at one end of the operating mechanism 10 facing the moving contact mechanism 20. The first limiting member 111 includes one of a limiting boss 1111 and a limiting groove 2111. The second limiting member 211 is disposed at one end of the moving contact mechanism 20 facing the operating mechanism 10. The second limiting member 211 includes the other of a limiting boss 1111 and a limiting groove 2111. The limiting boss 1111 can be engaged in the limiting groove 2111. When the moving contact mechanism 20 and the stationary contact mechanism 30 are in contact and conducting, the limiting boss 1111 is engaged with the limiting groove 2111. The groove wall of the limiting groove 2111 has a certain locking effect on the limiting boss 1111, so that the moving contact mechanism 20 and the stationary contact mechanism 30 cannot be separated during abnormal tripping, so that the limiting boss 1111 and the limiting groove 2111 cannot rotate relative to each other, thereby locking the moving contact mechanism 20 and the limiting boss 1111 relative to each other, thus achieving the restriction on the rotation of the operating mechanism 10 around the first direction.

[0053] Optionally, in this embodiment, the first limiting member 111 includes a limiting boss 1111 and the second limiting member 211 includes a limiting groove 2111, which can restrict the rotation of the operating mechanism 10 around the first direction during abnormal tripping.

[0054] Specifically, the operating mechanism 10 or the contact mechanism is provided with a plurality of protrusions 2112, which are spaced apart around the first direction. A limiting groove 2111 is formed between two adjacent protrusions 2112. The limiting boss 1111 is correspondingly set with the limiting groove 2111, so that the limiting groove 2111 can be formed. The protrusions 2112 also limit and block the limiting boss 1111, thereby limiting the rotation of the operating mechanism 10 around the first direction during abnormal tripping.

[0055] It should be noted that the number of limiting bosses 1111 and limiting grooves 2111 is one, two, or more, and their specific number can be adapted according to actual needs, and is not specifically limited here. Of course, in this embodiment, there are two limiting bosses 1111 and two limiting grooves 2111, and the two are symmetrically arranged, so that when the operating mechanism 10 rotates, the first limiting member 111 and the second limiting member 211 are subjected to uniform force when locking, avoiding damage; it also increases the reliability of locking and improves the restriction effect on the rotation of the operating mechanism 10 around the first direction during abnormal tripping.

[0056] Referring to Figures 2 to 5, in this embodiment, the operating mechanism 10 includes a drive shaft 11, a driven component 12, and an elastic element 13. One end of the drive shaft 11 is provided with a first limiting member 111. The driven component 12 is connected to the moving contact mechanism 20. The driven component 12 has a limiting hole 1201, and one end of the drive shaft 11 is inserted into the limiting hole 1201. The elastic element 13 is connected to the drive shaft 11 and the driven component 12. The rotation of the drive shaft 11 is used to drive the elastic element 13 to store energy and then release energy. When the elastic element 13 releases energy, the elastic element 13 can drive the driven component 12 and the drive shaft 11 to rotate in opposite directions, so as to drive the moving contact mechanism 20 to move along the first direction.

[0057] Specifically, the drive shaft 11 has a first position and a second position. When the drive shaft 11 is in the first position, the moving contact mechanism 20 and the stationary contact mechanism 30 are disconnected. When the drive shaft 11 is in the second position, the moving contact mechanism 20 and the stationary contact mechanism 30 are in contact and connected.

[0058] Referring to Figure 6, during operation, the drive shaft 11 is driven to rotate from the first position to the second position or from the second position to the first position. The rotation of the drive shaft 11 causes the elastic element 13 to be compressed and store energy until the elastic element 13 reaches the dead point position, that is, the elastic element 13 is compressed to the final state. After that, the elastic element 13 begins to release energy to drive the driven component 12 and the drive shaft 11 to rotate in opposite directions until the elastic element 13 returns to the free state. At this time, the drive shaft 11 has also completed the position change.

[0059] Please refer to Figures 2 through 5. The drive shaft 11 also includes a drive groove into which a drive key can be inserted. In use, the drive key is installed in the drive groove, and rotating the drive key drives the rotation of the drive shaft 11. Optionally, the drive groove is a non-circular groove, i.e., it can be an irregularly shaped groove, a square groove, etc., to achieve circumferential limiting between the drive key and the drive shaft 11, thereby facilitating the operation of the drive key.

[0060] Referring to Figure 7, specifically, the moving contact mechanism 20 has a protruding post 212 at one end facing the operating mechanism 10, and a second limiting member 211 is disposed at one end of the protruding post 212. The protruding post 212 can be inserted into the limiting hole 1201. This allows the protruding post 212 to slide axially along the limiting hole 1201 when the moving contact mechanism 20 moves in the first direction, thus guiding the moving contact mechanism 20. At the same time, it also provides a certain degree of support for the second limiting member 211, allowing it to approach and engage with the first limiting member 111.

[0061] Specifically, the moving contact mechanism 20 has a recess 213, a protruding post 212 is disposed at the bottom of the recess 213, and a sliding block 214 is disposed on the side wall of the recess 213. At least a portion of the driven component 12 is disposed in the recess 213, and a spiral groove 1211 is formed on the outer periphery of the driven component 12. The spiral groove 1211 extends spirally in a first direction, and the sliding block 214 is slidably connected to the spiral groove 1211. The driven component 12 rotates to drive the moving contact mechanism 20 to move in the first direction. During operation, the driven component 12 rotates, causing the sliding block 214 to slide along the spiral groove 1211. Since the spiral groove 1211 extends spirally, the sliding block 214 can move in the first direction, thereby driving the moving contact mechanism 20.

[0062] Referring to Figures 4, 5, and 7, optionally, the number of spiral grooves 1211 and sliding blocks 214 is one, two, or more, respectively. The specific number can be further limited according to actual needs, and no specific limitation is made here. For example, in this embodiment, the number of spiral grooves 1211 and sliding blocks 214 is two, and the two are symmetrically arranged. That is, sliding blocks 214 are provided on the symmetrical sidewalls of the recess 213, and spiral grooves 1211 are symmetrically provided on the outer periphery of the corresponding driven component 12. This increases the number of connection points between the driven component 12 and the moving contact mechanism 20, improves the connection strength between the two, and makes the movement of the moving contact mechanism 20 more stable.

[0063] To limit the drive shaft 11 along the first direction and prevent it from falling through the limiting hole 1201 and causing jamming, the drive shaft 11 is specifically provided with a first connecting portion 112 on its outer periphery, and the driven assembly 12 is provided with a second connecting portion 1202. The first connecting portion 112 and the second connecting portion 1202 are connected to limit the drive shaft 11 along the first direction and prevent it from falling through the limiting hole 1201 and causing jamming.

[0064] More specifically, the driven component 12 includes a mating shaft 121 and a connecting rod 122. The mating shaft 121 is connected to the moving contact mechanism 20, and the connecting rod 122 is connected to the elastic element 13. The limiting hole 1201 includes a first hole 12011 provided on the mating shaft 121 and a second hole 12012 provided on the connecting rod 122. The first end of the connecting rod 122 is connected to the first end of the mating shaft 121, and the second hole 12012 is coaxial with and communicates with the first hole 12011. The first connecting portion 112 includes portions spaced along the first direction on the drive shaft 11. The outer peripheral wall has a first protrusion 1121 and a second protrusion 1122. The second connecting portion 1202 includes a first limiting surface 12021 and a second limiting surface 12022. The first limiting surface 12021 is disposed at the first end of the mating rotating shaft 121, and the second limiting surface 12022 is disposed at the second end of the connecting rod 122. The drive shaft 11 passes through the second hole 12012 and the first hole 12011 in sequence, and the second protrusion 1122 overlaps with the second limiting surface 12022, and the first protrusion 1121 overlaps with the first limiting surface 12021. The two protrusions and the two limiting surfaces, which are spaced apart along the first direction, overlap one-to-one, so that there is a limiting effect along the first direction between the drive shaft 11 and the mating rotating shaft 121, and between the drive shaft 11 and the connecting rod 122, thereby improving the limiting effect on the drive shaft 11.

[0065] Optionally, a first groove is recessed at the first end of the rotating shaft 121, and a first protrusion 1121 is disposed within the first groove. The bottom of the first groove serves as a first limiting surface 12021, thereby limiting and guiding the first protrusion 1121, so that when the drive shaft 11 rotates, the first protrusion 1121 rotates and slides within the first groove. Similarly, a second groove is recessed at the second end of the connecting rod 122, and a second protrusion 1122 is disposed within the second groove. The bottom of the second groove serves as a second limiting surface 12022, thereby limiting and guiding the second protrusion 1122, so that when the drive shaft 11 rotates, the second protrusion 1122 rotates and slides within the second groove.

[0066] Of course, in order to realize the installation of the drive shaft 11, the first limiting surface 12021 may optionally be provided with an assembly hole 1221. The assembly hole 1221 is provided in a one-to-one correspondence with the first protrusion 1121. The first protrusion 1121 can pass through the assembly hole 1221 to realize the assembly of the drive shaft 11 and the driven component 12.

[0067] Specifically, the rotating shaft 121 is a ring structure, with its inner circumference serving as the first hole 12011 of the limiting hole 1201, and its outer circumference having a spiral groove 1211, so as to achieve a sliding connection with the sliding block 214 of the moving contact mechanism 20, thereby driving the movement of the moving contact mechanism 20 along the first direction.

[0068] Furthermore, the rotating shaft 121 is provided with an annular groove 1212, and the first end of the connecting rod 122 is provided with a retaining ring 1222. The retaining ring 1222 is inserted into the annular groove 1212, thereby realizing the connection between the rotating shaft 121 and the connecting rod 122. The portion of the rotating shaft 121 located on the inner circumference of the annular groove 1212 serves as the setting position for the second limiting surface 12022 and the second sliding groove.

[0069] Optionally, one of the outer periphery of the snap ring 1222 and the groove wall of the annular groove 1212 is provided with a snap block 1223 and the other is provided with a snap groove 1213. The snap block 1223 snaps into the snap groove 1213, thereby realizing circumferential limiting between the mating shaft 121 and the connecting rod 122.

[0070] Alternatively, the first end edge of the mating shaft 121 is provided with a plurality of limiting blocks 1214, and the connecting rod 122 can be disposed in the mounting groove formed by the plurality of limiting blocks 1214, thereby further strengthening the connection between the mating shaft 121 and the connecting rod 122.

[0071] Specifically, the elastic element 13 is connected between the connecting rod 122 and the drive shaft 11 to realize the rotation of the drive shaft 11 and the driven assembly 12. More specifically, the connecting rod 122 includes two opposing side walls, the two ends of which are connected by end walls. The two side walls and the two end walls enclose a mounting cavity for mounting the elastic element 13. Furthermore, each of the two opposing side walls has a second hole 12012, through which the drive shaft 11 passes, thus realizing the connection function of the connecting rod 122.

[0072] Specifically, there are two elastic elements 13 arranged opposite each other. The two ends of each elastic element 13 are connected to the connecting rod 122 and the drive shaft 11, respectively. The elastic element 13 is tangential to the drive shaft 11. When the drive shaft 11 is in the first position, the elastic element 13 is in a free state. When the drive shaft 11 rotates from the first position to the second position, the elastic element 13 will be compressed and store energy until it reaches the dead point position. Then, as it continues to rotate, the elastic element 13 will release energy, so that the drive shaft 11 and the connecting rod 122 rotate in opposite directions until the drive shaft 11 reaches the second position. The elastic element 13 then returns to a free state, thus enabling the elastic element 13 to transmit the driving force of the drive shaft 11 to the connecting rod 122.

[0073] Optionally, the elastic element 13 can be a spring, which has a simple structure, low cost, good durability, and can realize the storage and release of energy.

[0074] Referring to Figures 2, 3, and 7, in this embodiment, the moving contact mechanism 20 includes a plurality of moving contacts 22, and the stationary contact mechanism 30 includes a plurality of stationary contacts 31. When the operating mechanism 10 rotates to drive the moving contact mechanism 20 to move along the first direction, the moving contacts 22 and the stationary contacts 31 make contact and conduction in a one-to-one correspondence to close the circuit and realize the closing function of the isolating switch, or the moving contacts 22 and the stationary contacts 31 disconnect in a one-to-one correspondence to open the circuit and realize the opening function of the isolating switch.

[0075] It is understandable that the number of stationary contacts 31 and moving contacts 22 can be adapted to actual needs, and no specific limit is made here.

[0076] Specifically, the moving contact mechanism 20 includes a mounting base 21 and a plurality of moving contacts 22. The mounting base 21 is connected to the operating mechanism 10. The protruding post 212, the second limiting member 211, the recess 213, and the sliding block 214 are all disposed on the mounting base 21, and the plurality of moving contacts 22 are spaced apart on the mounting base 21. During operation, the operating mechanism 10 drives the mounting base 21 to move in the first direction, thereby driving the moving contacts 22 and realizing the contact conduction and disconnection between the moving contacts 22 and the stationary contact 31.

[0077] To achieve insulation between the disconnecting switch and the outside, please refer to Figures 1, 2, 3, 8 and 9. In this embodiment, the disconnecting switch also includes a housing 40. The operating mechanism 10, the stationary contact mechanism 30 and the moving contact mechanism 20 are all disposed inside the housing 40. This arrangement can protect the operating mechanism 10, the stationary contact mechanism 30 and the moving contact mechanism 20.

[0078] Furthermore, the mounting base 21 is provided with several first protruding ribs 215, which are positioned between adjacent moving contacts 22. The outer shell 40 is provided with several partitions 411, which are positioned between adjacent moving contacts 22. That is, insulation between each group of moving contacts 22 can be achieved through the first protruding ribs 215 and the partitions 411. Optionally, a second protruding rib 412 is provided at the end of the partition 411 facing the first protruding rib 215, and the second protruding rib 412 extends to the side of the first protruding rib 215. This arrangement not only improves the insulation effect between each group of moving contacts 22, but also guides the movement of the moving contact mechanism 20, making its movement more stable.

[0079] Optionally, the dimension of the second rib 412 along the first direction is larger than the dimension of the first rib 215 along the first direction. This arrangement ensures that even if the mounting base 21 moves along the first direction, the first rib 215 and the second rib 412 are partially opposite to each other, thereby ensuring the insulation effect and guiding function between them and improving the reliability of their use.

[0080] Optionally, the housing 40 is provided with a number of heat dissipation holes 421 to dissipate heat inside the housing 40, so that the heat generated when the circuit is closed and opened inside the disconnecting switch can be dissipated as soon as possible, and to prevent damage to the internal components of the disconnecting switch due to excessive temperature.

[0081] To facilitate operation, the end of the drive shaft 11 away from the mating shaft 121 can be inserted into the housing 40 to facilitate the operation of the drive shaft 11.

[0082] Specifically, the outer casing 40 has a through hole 422, through which the drive shaft 11 passes.

[0083] The outer casing 40 is provided with a third limiting surface 423, and a second protrusion 1122 is sandwiched between the third limiting surface 423 and the second limiting surface 12022, thereby achieving axial limiting of the drive shaft 11 and preventing the drive shaft 11 from falling out of the through hole 422 of the outer casing 40.

[0084] Specifically, the outer casing 40 includes an upper casing 42 and a lower casing 41. The upper casing 42 and the lower casing 41 are interlocked to form a cavity for accommodating the installation and operation mechanism 10, the stationary contact mechanism 30 and the moving contact mechanism 20, which also facilitates the assembly and disassembly of the outer casing 40.

[0085] Since both closing and opening of the stationary contact 31 and the moving contact 22 may generate an electric arc, in order to improve the safety of the disconnecting switch, in this embodiment, the disconnecting switch also includes several arc-extinguishing chambers 50, which are arranged one-to-one with the stationary contact 31 to extinguish the electric arc and prevent damage to the disconnecting switch.

[0086] The following describes the closed and open states of the disconnecting switch provided by this utility model, as well as the switching between the two, with reference to Figures 1 to 9.

[0087] When the disconnecting switch is closed, the operator rotates the drive shaft 11, causing it to rotate from the first position. The elastic element 13 is in an energy-storing state until it passes the dead center position. At this point, the elastic element 13 releases energy and drives the drive shaft 11 and the corresponding driven component 12 to rotate in opposite directions. The drive shaft 11 rotates to the second position, causing the mounting base 21 to move along the first direction toward the stationary contact mechanism 30 until the moving contact 22 and the stationary contact 31 make contact and conduct, thus closing the circuit. At this time, the limiting boss 1111 and the limiting groove 2111 engage.

[0088] When the disconnecting switch is normally open, the operator rotates the drive shaft 11 in the reverse direction, causing the drive shaft 11 to rotate from the second position. The elastic element 13 is in an energy-storing state until the elastic element 13 passes the dead point position. At this time, the elastic element 13 releases energy, and the drive shaft 11 and the corresponding driven component 12 rotate in opposite directions. The drive shaft 11 rotates to the first position, causing the mounting base 21 to move away from the stationary contact mechanism 30 along the first direction. The moving contact 22 and the stationary contact 31 break apart, thus realizing the circuit disconnection. At this time, the limiting boss 1111 and the limiting groove 2111 are far apart from each other, so they do not affect the rotation of the drive shaft 11.

[0089] When the disconnecting switch is abnormally tripped, that is, when an abnormality occurs in the circuit causing the moving contact 22 and the stationary contact 31 to be welded together, the disconnecting switch will remain in the closed state, and the limiting boss 1111 and the limiting groove 2111 will be engaged, thereby preventing the drive shaft 11 from continuing to rotate in the reverse direction, that is, the drive shaft 11 cannot rotate to the second position, which can serve as a warning to the operator to remind them of the circuit abnormality.

[0090] 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 disconnecting switch, characterized in that, The device includes an operating mechanism (10), a stationary contact mechanism (30), and a moving contact mechanism (20). The operating mechanism (10) is rotatably arranged about a first direction and has a first limiting member (111). The moving contact mechanism (20) is connected to the operating mechanism (10) and has a second limiting member (211). The rotation of the operating mechanism (10) drives the moving contact mechanism (20) to move along the first direction, so that the moving contact mechanism (20) moves along the first direction. When the moving contact mechanism (20) makes contact with the stationary contact mechanism (30) to conduct electricity, the disconnecting switch is closed; or when the moving contact mechanism (20) is disconnected from the stationary contact mechanism (30), the disconnecting switch is opened. During normal opening, the second limiting member (211) is separated from the first limiting member (111). During abnormal opening, the second limiting member (211) is engaged with the first limiting member (111) to restrict the operation mechanism (10) from rotating around the first direction.

2. The disconnecting switch according to claim 1, characterized in that, The first limiting member (111) is disposed at one end of the operating mechanism (10) facing the moving contact mechanism (20). The first limiting member (111) includes one of a limiting boss (1111) and a limiting groove (2111). The second limiting member (211) is disposed at one end of the moving contact mechanism (20) facing the operating mechanism (10). The second limiting member (211) includes the other of the limiting boss (1111) and the limiting groove (2111). The limiting boss (1111) can be engaged in the limiting groove (2111).

3. The disconnecting switch according to claim 2, characterized in that, The operating mechanism (10) or the moving contact mechanism (20) is provided with a plurality of protrusions (2112), the plurality of protrusions (2112) are spaced apart around a first direction, and the limiting groove (2111) is formed between two adjacent protrusions (2112), and the limiting boss (1111) is correspondingly provided with the limiting groove (2111).

4. The disconnecting switch according to claim 2, characterized in that, The operating mechanism (10) includes: a drive shaft (11) with a first limiting member (111) at one end; a driven component (12) connected to the moving contact mechanism (20), the driven component (12) having a limiting hole (1201), and one end of the drive shaft (11) inserted into the limiting hole (1201); and an elastic member (13) connected to the drive shaft (11) and the driven component (12); the drive shaft (11) rotates to drive the elastic member (13) to store energy and then release energy; when the elastic member (13) releases energy, the elastic member (13) can drive the driven component (12) and the drive shaft (11) to rotate in opposite directions to drive the moving contact mechanism (20) to move along a first direction.

5. The disconnecting switch according to claim 4, characterized in that, The moving contact mechanism (20) has a protruding post (212) at one end facing the operating mechanism (10), and the second limiting member (211) is disposed at one end of the protruding post (212). The protruding post (212) can be inserted into the limiting hole (1201).

6. The disconnecting switch according to claim 5, characterized in that, The moving contact mechanism (20) has a recess (213), the protruding post (212) is disposed at the bottom of the recess (213), the side wall of the recess (213) is provided with a sliding block (214), at least part of the driven component (12) is disposed in the recess (213), the outer periphery of the driven component (12) is provided with a spiral groove (1211), the spiral groove (1211) extends spirally around a first direction, the sliding block (214) is slidably connected to the spiral groove (1211), and the driven component (12) rotates to drive the moving contact mechanism (20) to move along the first direction.

7. The disconnecting switch according to claim 4, characterized in that, The drive shaft (11) has a first connecting part (112) on its outer periphery, and the driven component (12) has a second connecting part (1202), and the first connecting part (112) is connected to the second connecting part (1202).

8. The disconnecting switch according to claim 7, characterized in that, The driven component (12) includes a mating shaft (121) and a connecting rod (122). The mating shaft (121) is connected to the moving contact mechanism (20), and the connecting rod (122) is connected to the elastic element (13). The limiting hole (1201) includes a first hole (12011) disposed on the mating shaft (121) and a second hole (12012) disposed on the connecting rod (122). The first end of the connecting rod (122) is connected to the first end of the mating shaft (121). The second hole (12012) is coaxial with and communicates with the first hole (12011). The first connecting part (112) includes a portion spaced along a first direction on the drive shaft ( 11) A first protrusion (1121) and a second protrusion (1122) on the outer peripheral wall. The second connecting part (1202) includes a first limiting surface (12021) and a second limiting surface (12022). The first limiting surface (12021) is disposed at the first end of the mating shaft (121), and the second limiting surface (12022) is disposed at the second end of the connecting rod (122). The drive shaft (11) passes through the second hole (12012) and the first hole (12011) in sequence. The second protrusion (1122) overlaps on the second limiting surface (12022), and the first protrusion (1121) overlaps on the first limiting surface (12021).

9. The disconnecting switch according to any one of claims 1-8, characterized in that, It also includes a housing (40), in which the operating mechanism (10), the stationary contact mechanism (30) and the moving contact mechanism (20) are all disposed. The moving contact mechanism (20) includes a mounting base (21) and a plurality of moving contacts (22). The mounting base (21) is slidably connected to the housing (40), and the plurality of moving contacts (22) are spaced apart from each other on the mounting base (21). The mounting base (21) is provided with a plurality of first ribs (215), which are disposed between adjacent moving contacts (22). The housing (40) is provided with a plurality of partitions (411), which are disposed between adjacent moving contacts (22). The partitions (411) have a second rib (412) at one end facing the first rib (215), which extends to the side of the first rib (215).

10. The disconnecting switch according to claim 9, characterized in that, The dimension of the second rib (412) along the first direction is greater than the dimension of the first rib (215) along the first direction.

11. The disconnecting switch according to any one of claims 1-8, characterized in that, It also includes a housing (40), in which the operating mechanism (10), the stationary contact mechanism (30) and the moving contact mechanism (20) are all disposed, and the housing (40) is provided with a plurality of heat dissipation holes (421).

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