A disconnector

Abstract

The utility model provides a disconnecting switch relates to electrical equipment technical field. Disconnecting switch includes installation shell body and setting in installation shell body's binding post, drive shaft and sealing assembly, installation shell body is used for installing in panel, drive shaft is used for under the drive action of handle or electric drive spare drive contact mechanism to close or open the gate, sealing assembly includes at least one of first sealing piece, second sealing piece and third sealing piece, wherein, first sealing piece sets up in installation shell body, to be located between installation shell body and panel, second sealing piece sets up between binding post and installation shell body, third sealing piece sets up between drive shaft and installation shell body. Visible, disconnecting switch sealing structure is reliable, protection level is high and is convenient for maintenance, can effectively block the invasion of external contaminant, promotes the durability and safety of product under the harsh environment, prolongs the life.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, and more specifically, to a disconnecting switch. Background Technology

[0002] Disconnect switches are important devices in power systems used to isolate power sources and ensure maintenance safety. They are often installed in complex working conditions such as outdoor or industrial environments. The sealing performance of their housing directly affects the operational reliability and service life of the internal electrical components.

[0003] However, existing disconnect switches generally suffer from imperfect sealing structure design. Effective sealing measures are lacking at the joints of the housing, the shaft hole of the operating handle, the terminal block, and the connection of the cover plate. During long-term use, dust, moisture, rainwater, and corrosive particles from the external environment can easily penetrate into the switch, potentially causing poor contact, partial discharge, or creepage. Moisture entering the switch not only accelerates the oxidation and corrosion of metal parts but may also lead to a decrease in insulation performance. In severe cases, it can cause short circuits, leakage, or even arcing faults, threatening equipment and personal safety. Utility Model Content

[0004] The purpose of this utility model is to provide an isolating switch with a reliable sealing structure, high protection level and easy maintenance. It can effectively block the intrusion of external pollutants, improve the durability and safety of the product in harsh environments, and extend its service life.

[0005] The embodiments of this utility model are implemented as follows: In a first aspect, this utility model provides an isolating switch, comprising: Mounting housing, the mounting housing being used for mounting to the panel; A wiring terminal, wherein the wiring terminal is disposed in the mounting housing; A drive shaft is movably disposed in the mounting housing, and the drive shaft is used to drive the contact mechanism to close or open under the driving action of a handle or an electric drive component. A sealing assembly, the sealing assembly including at least one of a first seal, a second seal, and a third seal, wherein the first seal is disposed on the mounting housing and located between the mounting housing and the panel, the second seal is disposed between the terminal block and the mounting housing, and the third seal is disposed between the drive shaft and the mounting housing.

[0006] In an optional embodiment, the mounting housing is provided with a first mounting plate and a mounting groove, the first mounting plate being used to fit and mount the panel, the mounting groove being disposed on the first mounting plate, and the first sealing member being disposed on the mounting groove.

[0007] In an optional embodiment, the mounting groove is located at the edge of the first mounting plate and is arranged in a ring shape.

[0008] In an optional embodiment, the second seal is fitted onto the terminal block, and the second seal is interference-fitted with the terminal block.

[0009] In an optional embodiment, the terminal block includes a second mounting plate and a terminal base. One end of the terminal base is connected to the second mounting plate, and the other end is used to connect to a wire or electronic component. The second mounting plate is connected to the mounting housing, and the second sealing element is sleeved on the end of the terminal base connected to the second mounting plate.

[0010] In an optional embodiment, the mounting housing is provided with a mounting cavity, the terminal block is accommodated in the mounting cavity, and the second mounting plate is located at one end within the mounting cavity.

[0011] In an optional embodiment, the sidewall of the mounting cavity is recessed with a mounting portion, the second seal is located in the mounting portion, and the shape of the second seal is adapted to the shape of the mounting portion and is stepped.

[0012] In an optional embodiment, the third seal is fitted onto the drive shaft.

[0013] In an optional embodiment, the drive shaft is provided with an annular groove, and the third seal is fitted into the groove.

[0014] In an optional embodiment, the disconnecting switch further includes a contact mechanism and a drive shaft, one end of which is connected to the drive shaft and the other end of which is connected to the contact mechanism.

[0015] The beneficial effects of the disconnecting switch provided in this embodiment include: by providing at least one of a first sealing element, a second sealing element, and a third sealing element on the mounting housing to form at least one sealing point, it can be flexibly configured according to actual application needs, improving product adaptability. Specifically, the first sealing element is provided between the mounting housing and the panel to seal the gap in the outer circumference of the housing; the second sealing element is provided between the terminal block and the mounting housing to seal the gap between the two connection interfaces, preventing dust or moisture from entering the housing through the terminal block; the third sealing element is provided between the drive shaft and the mounting housing to form a dynamic seal at the drive shaft. It is evident that the disconnecting switch significantly improves sealing performance while ensuring basic electrical functions, thereby enhancing environmental adaptability and operational safety, extending product lifespan, and reducing maintenance costs. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the disconnector switch structure provided in an embodiment of the present utility model; Figure 2 A cross-sectional view of the disconnecting switch provided in an embodiment of this utility model; Figure 3 A schematic diagram of the wiring terminal and the second sealing element provided in an embodiment of this utility model; Figure 4 A schematic diagram of the drive shaft and third seal provided in an embodiment of this utility model; Figure 5 This is a schematic diagram of the disconnector switch structure provided in an embodiment of the present utility model.

[0018] Icons: 10-Disconnecting switch; 100-Mounting housing; 110-First mounting plate; 120-Mounting groove; 130-Mounting cavity; 140-Mounting part; 200-Terminal; 210-Second mounting plate; 220-Terminal base; 300-Drive shaft; 310-Groove; 400-Sealing assembly; 410-First seal; 420-Second seal; 430-Third seal; 500-Contact mechanism; 600-Drive shaft. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, 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," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0024] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of 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.

[0025] Disconnect switches are important devices in power systems used to isolate power sources and ensure maintenance safety. They are often installed in complex working conditions such as outdoor or industrial environments. The sealing performance of their housing directly affects the operational reliability and service life of the internal electrical components.

[0026] However, existing disconnect switches generally suffer from imperfect sealing structure design. Effective sealing measures are lacking at the joints of the housing, the shaft hole of the operating handle, the terminal block, and the connection of the cover plate. During long-term use, dust, moisture, rainwater, and corrosive particles from the external environment can easily penetrate into the switch, potentially causing poor contact, partial discharge, or creepage. Moisture entering the switch not only accelerates the oxidation and corrosion of metal parts but may also lead to a decrease in insulation performance. In severe cases, it can cause short circuits, leakage, or even arcing faults, threatening equipment and personal safety.

[0027] Therefore, there is an urgent need to provide a design scheme for disconnecting switches that has a reliable sealing structure, a high level of protection, and is easy to maintain, so as to effectively block the intrusion of external pollutants, improve the durability and safety of the product in harsh environments, and extend its service life.

[0028] Please see Figures 1 to 5 This utility model provides a disconnecting switch 10, including a mounting housing 100, a terminal block 200, a drive shaft 300, and a sealing assembly 400. The terminal block 200 is disposed in the mounting housing 100, and the drive shaft 300 is movably disposed in the mounting housing 100. The drive shaft 300 is used to drive the contact mechanism 500 to close or open under the driving action of a handle or an electric drive component.

[0029] The mounting housing 100 serves as the core load-bearing structure, used to secure internal transmission and electrical components and mounted on the external panel. At least a portion of the mounting housing 100 must be fixedly connected to the external panel. During this assembly process, a gap inevitably exists between the mounting housing 100 and the panel. Without effective sealing measures, external contaminants will penetrate the housing along this path, affecting the normal operation of critical components such as the contact mechanism 500. Therefore, the sealing assembly 400 is configured to address multiple high-risk leakage points and improve its sealing performance.

[0030] It is understood that the panel is installed by the user of the disconnector switch 10 on various electrical equipment according to the user's needs. For example, the mounting housing 100 can be installed on the high-voltage box panel. Of course, in other embodiments, the mounting housing 100 can also be installed on the panel of other devices or equipment, which is not specifically limited here.

[0031] The sealing assembly 400 includes at least one of a first seal 410, a second seal 420, and a third seal 430, wherein the first seal 410 is disposed on the mounting housing 100 between the mounting housing 100 and the panel, the second seal 420 is disposed between the terminal block 200 and the mounting housing 100, and the third seal 430 is disposed between the drive shaft 300 and the mounting housing 100.

[0032] Specifically, the first seal 410 is disposed between the mounting housing 100 and the panel to seal the circumferential gap of the housing. The second seal 420 is disposed between the terminal 200 and the mounting housing 100 to seal the gap between their connection interface, preventing dust or moisture from entering the housing through the terminal. The third seal 430 is disposed between the drive shaft 300 and the mounting housing 100 to form a dynamic seal at the drive shaft 300. This not only ensures the continuity of the electrical connection of the disconnect switch 10 but also guarantees the integrity of the enclosure of the mounting housing 100.

[0033] Therefore, the sealing assembly 400 includes at least one of the first seal 410, the second seal 420, and the third seal 430, allowing for flexible configuration according to actual application needs, whether using a single sealing point or a multi-combination sealing scheme, thus improving product adaptability. Furthermore, by setting corresponding seals at three key interfaces—the mounting housing 100 and the panel, the terminal block 200 and the mounting housing 100, and the drive shaft 300 and the mounting housing 100—a multi-layered, fully covered sealing system is formed, effectively blocking both static and dynamic leakage paths.

[0034] Therefore, the disconnector 10 provided in this embodiment of the present invention significantly improves sealing performance while ensuring basic electrical functions, thereby improving environmental adaptability and operational safety, extending product service life, and reducing maintenance costs.

[0035] For example, in humid or outdoor environments, rainwater or high-concentration water mist may continuously act on the equipment surface. If the seal is insufficient, moisture will seep into the interior, leading to decreased insulation, metal corrosion, or even short-circuit failure. In dusty environments, the accumulation of conductive particles may also cause creepage or malfunctions. The sealing structure provided in this application can withstand such harsh operating conditions, meeting the requirements of IP67 and above protection levels, ensuring stable operation of the disconnector switch 10 in complex environments.

[0036] Furthermore, the mounting housing 100 is provided with a first mounting plate 110 and a mounting groove 120. The first mounting plate 110 is used to fit and install on the panel, the mounting groove 120 is provided on the first mounting plate 110, and the first sealing member 410 is provided in the mounting groove 120.

[0037] The mounting housing 100 is provided with a first mounting plate 110 and a mounting groove 120. The first mounting plate 110 is used to fit and install on the panel. That is, it is the structural part of the mounting housing 100 that directly contacts and fixes to the panel, and undertakes the functions of positioning, supporting and sealing the base surface.

[0038] The mounting groove 120, as a recessed structure accommodating the first seal 410, provides it with limiting and support functions, preventing the first seal 410 from shifting, twisting, or being squeezed out during assembly. When the mounting housing 100 is locked to the panel by screws or other fastening methods, the first mounting plate 110 adheres to the panel surface and applies pressure, causing the first seal 410 located in the mounting groove 120 to undergo moderate deformation, filling the microscopic unevenness between the two, thereby eliminating the gas-liquid flow path and effectively improving the sealing performance.

[0039] It is worth mentioning that the mounting groove 120 is located at the edge of the first mounting plate 110 and is arranged in a ring shape, so that the first sealing member 410 housed therein can be arranged in a ring shape to cover the entire outer boundary of the contact surface between the mounting housing 100 and the panel.

[0040] Specifically, when the mounting housing 100 is pressed against the panel, the first sealing element 410 contained in the annular mounting groove 120 is synchronously deformed under pressure in the entire circumferential direction, generating uniform contact stress, thereby establishing a continuous and seamless sealing barrier between the mounting housing 100 and the panel.

[0041] Furthermore, the second seal 420 is sleeved on the terminal 200, and the second seal 420 and the terminal 200 are interference fit, that is, the second seal 420 forms a compression contact with the outer peripheral surface of the terminal 200 through its inner diameter, and generates a continuous radial preload force by relying on the elastic deformation of the material, thereby establishing a stable interface seal, and thus enabling the second seal 420 to fit tightly against the surface of the terminal 200, eliminating the gap between the two, and effectively blocking the channel for medium to penetrate between the terminal 200 and the mounting housing 100.

[0042] In detail, the terminal block 200 includes a second mounting plate 210 and a terminal block 220. One end of the terminal block 220 is connected to the second mounting plate 210, and the other end is used to connect to a wire or electronic component. The second mounting plate 210 is connected to the mounting housing 100. The second seal 420 is sleeved on the end of the terminal block 220 connected to the second mounting plate 210. That is, the second seal 420 is located in the root area near the inside of the mounting housing 100, rather than in the exposed section or intermediate transition area. This not only allows the second seal 420 to be securely mounted on the terminal block 220, but also avoids the second seal 420 being exposed outside the mounting housing 100, thus reducing the risk of failure of the second seal 420 due to aging, wear or mechanical damage.

[0043] It is worth mentioning that the mounting housing 100 is provided with a mounting cavity 130, the terminal block 220 is housed in the mounting cavity 130, and the second mounting plate 210 is located at one end inside the mounting cavity 130. Therefore, the mounting housing 100 can completely enclose the terminal block 220 and the second mounting plate 210 inside it to form a physical barrier. The second mounting plate 210 is fixedly connected to one end of the structure inside the mounting cavity 130, thereby ensuring the installation stability of the terminal block 220.

[0044] Furthermore, the side wall of the mounting cavity 130 is recessed with a mounting portion 140, the second seal 420 is located in the mounting portion 140, and the shape of the second seal 420 is adapted to the shape of the mounting portion 140 and both are stepped.

[0045] Specifically, the shape of the second seal 420 is adapted to the shape of the mounting part 140 and both are stepped, which means that the two have a multi-step profile in cross-section. They achieve dual axial and radial limiting by interlocking with each other, so that the second seal 420 can be accurately positioned during assembly and maintain a stable posture during subsequent tightening, avoiding seal failure due to misalignment.

[0046] Furthermore, the third seal 430 is fitted onto the drive shaft 300.

[0047] As can be seen, the third seal 430 is arranged around the drive shaft 300 and is located in the mating area between the drive shaft 300 and the mounting housing 100. When the drive shaft 300 rotates under the action of the handle or electric drive, the third seal 430, through the contact between its inner ring and the outer circumferential surface of the drive shaft 300, can maintain the contact pressure with the shaft surface during the rotation or axial movement of the drive shaft 300, thereby maintaining an effective physical sealing effect in motion and preventing contaminants from penetrating into the internal space of the mounting housing 100 with the airflow or droplets.

[0048] It is worth mentioning that the drive shaft 300 is provided with an annular groove 310, and the third seal 430 is sleeved in the groove 310. The groove 310 is a narrowed section that extends continuously along the outer periphery of the drive shaft 300, which is used to accommodate and limit the third seal 430 so that the third seal 430 can be stably installed on the drive shaft 300, thereby improving the installation stability of the third seal 430.

[0049] Specifically, by assembling the third seal 430 into the groove 310, its two sides are axially constrained by the groove wall, effectively preventing slippage or detachment due to axial thrust, vibration or rotational centrifugal force during assembly or subsequent operation.

[0050] It should also be noted that the isolating switch 10 provided in this embodiment of the present invention has a split structure. For details, please refer to [link / reference needed]. Figure 5 The disconnector switch 10 also includes a contact mechanism 500 and a drive shaft 600. One end of the drive shaft 600 is connected to the drive shaft 300 and the other end is connected to the contact mechanism 500, so as to realize that the mounting housing 100 and the contact mechanism 500 are spaced apart, which can be applied to the application scenarios of the split disconnector switch 10.

[0051] In summary, this utility model provides a disconnecting switch 10. By providing at least one of a first sealing element 410, a second sealing element 420, and a third sealing element 430 in the mounting housing 100, at least one sealing point is formed. This allows for flexible configuration according to actual application requirements, improving product adaptability. Specifically, the first sealing element 410 is disposed between the mounting housing 100 and the panel to seal the circumferential gap of the housing; the second sealing element 420 is disposed between the terminal block 200 and the mounting housing 100 to seal the gap between their connection interface, preventing dust or moisture from entering the housing along the terminal block; and the third sealing element 430 is disposed between the drive shaft 300 and the mounting housing 100 to form a dynamic seal at the drive shaft 300. Therefore, the disconnecting switch 10 significantly improves sealing performance while ensuring basic electrical functions, thereby enhancing environmental adaptability and operational safety, extending product lifespan, and reducing maintenance costs.

[0052] The above description is merely an optional embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A disconnecting switch, characterized in that, include: Mounting housing (100) for mounting to panel; Terminal block (200), wherein the terminal block (200) is disposed on the mounting housing (100); A drive shaft (300) is movably disposed in the mounting housing (100). The drive shaft (300) is used to drive the contact mechanism (500) to close or open under the driving action of a handle or an electric drive unit. A sealing assembly (400) includes at least one of a first seal (410), a second seal (420), and a third seal (430), wherein the first seal (410) is disposed on the mounting housing (100) between the mounting housing (100) and the panel, the second seal (420) is disposed between the terminal block (200) and the mounting housing (100), and the third seal (430) is disposed between the drive shaft (300) and the mounting housing (100).

2. The disconnecting switch according to claim 1, characterized in that, The mounting housing (100) is provided with a first mounting plate (110) and a mounting groove (120). The first mounting plate (110) is used to fit and install on the panel. The mounting groove (120) is provided on the first mounting plate (110). The first sealing element (410) is provided on the mounting groove (120).

3. The disconnecting switch according to claim 2, characterized in that, The mounting groove (120) is located at the edge of the first mounting plate (110) and is arranged in a ring.

4. The disconnecting switch according to claim 1, characterized in that, The second seal (420) is fitted onto the terminal (200), and the second seal (420) is interference-fitted with the terminal (200).

5. The disconnecting switch according to claim 4, characterized in that, The terminal block (200) includes a second mounting plate (210) and a terminal block (220). One end of the terminal block (220) is connected to the second mounting plate (210), and the other end is used to connect to a wire or electronic component. The second mounting plate (210) is connected to the mounting housing (100), and the second sealing member (420) is sleeved on the end of the terminal block (220) connected to the second mounting plate (210).

6. The disconnecting switch according to claim 5, characterized in that, The mounting housing (100) is provided with a mounting cavity (130), the terminal block (220) is housed in the mounting cavity (130), and the second mounting plate (210) is located at one end within the mounting cavity (130).

7. The disconnecting switch according to claim 6, characterized in that, The mounting cavity (130) has a recessed mounting portion (140) on its side wall. The second seal (420) is located in the mounting portion (140), and the shape of the second seal (420) is adapted to the shape of the mounting portion (140) and both are stepped.

8. The disconnecting switch according to claim 1, characterized in that, The third seal (430) is fitted onto the drive shaft (300).

9. The disconnecting switch according to claim 8, characterized in that, The drive shaft (300) is provided with an annular groove (310), and the third seal (430) is sleeved in the groove (310).

10. The disconnecting switch according to any one of claims 1-9, characterized in that, The disconnecting switch also includes a contact mechanism (500) and a drive shaft (600), one end of which is connected to the drive shaft (300) and the other end is connected to the contact mechanism (500).

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