Quick break switch rotary cutout structure

Abstract

The utility model relates to electric appliance element technical field, especially quick open switch rotary cut -off structure of breaking, including casing, the top of casing is completely open, the top of casing is fixedly installed with end cover, the left side of casing is provided with two through -holes, two through -holes symmetrically are arranged, fixedly install the binding post in the through -hole, the inner bottom of casing is provided with rotary switch, and rotary switch includes first gear and second gear, and first gear and second gear are all rotationally installed at the bottom of casing, and the number of teeth of first gear is more than three times the number of teeth of second gear, and the top eccentricity of second gear is provided with insulating sleeve, and the connecting rod is sleeved on the insulating sleeve, because the transmission ratio of first gear and second gear is greater than three, so when the first gear is twisted through the shaft rod, the first gear rotates a circle, and the second gear rotates more than three circles, thereby can make the insulating sleeve of second gear dislocation, thereby make the connecting rod quickly separate the binding post, realize quick open breaking.

Description

Technical Field

[0001] This utility model relates to the field of electrical component technology, and in particular to a rotary cut-off structure for a fast-opening switch. Background Technology

[0002] The main advantages of quick-cut switches lie in three aspects: safety, reliability, and emergency response efficiency. Quick-cut switches can cut off power or fluids in a very short time (e.g., within one second), effectively preventing the escalation of serious accidents such as fires and explosions. For example, in the event of a flammable gas leak or equipment overheating, they can quickly isolate the hazardous source. Using pneumatic or electronic drive technology, they are unaffected by power failures, ensuring continuous operation in emergencies. Compared to electric or hydraulic devices, they have a simpler structure, lower maintenance costs, and a lower failure rate. One-button operation allows for rapid power cut-off, making them particularly suitable for scenarios involving frequent travel or requiring rapid equipment isolation (such as installation in entryways or hallways), significantly improving emergency response speed.

[0003] Currently, Chinese patent CN222380485U discloses a fast mechanical switch for a double-pole DC circuit breaker, belonging to the field of fast mechanical switches. It includes: a switch body, an electromagnetic repulsion operating mechanism, a drive circuit, a position detection unit, and a control unit. The switch body comprises a vacuum interrupter, at least one stationary contact, and at least one moving contact. A positive switch break is located on the DC positive busbar, and a negative switch break is located on the DC negative busbar. The stationary contacts are respectively located at both ends of the positive and negative switch breaks, and the moving contact is opposite to the stationary contact. The control unit controls the drive circuit to drive the electromagnetic repulsion operating mechanism to close or open the fast mechanical switch based on the closed or open state of the fast mechanical switch detected by the position detection unit. Reliable disconnection of the DC busbar break is achieved through the driving of two series-connected coils on the DC positive and DC negative busbar sides, improving the consistency of mechanical switch operation and reducing product size and cost.

[0004] The aforementioned existing technical solutions have the following drawbacks: they achieve rapid breaking through electromagnetic force, which is essentially not a mechanical process and has lower reliability compared to purely mechanical methods. Utility Model Content

[0005] The purpose of this invention is to provide a quick-opening switch rotary cutting structure to solve the problems existing in the prior art.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A quick-opening rotary cut-off structure includes a housing with a completely open top. An end cap is fixedly installed on the top of the housing. Two through holes are provided on the left side of the housing, symmetrically arranged front and back. A terminal post is fixedly installed in each through hole, and a sealing ring is fitted on the terminal post to completely block the middle section of the through hole. A rotary switch is provided at the inner bottom of the housing. The rotary switch includes a first gear and a second gear, both of which are rotatably mounted at the bottom of the housing, with their axes vertically aligned. The first and second gears mesh, and the number of teeth on the first gear is more than three times the number of teeth on the second gear. Both the first and second gears are rotatably mounted at the inner bottom of the housing via shafts. The top end of the shaft of the first gear passes through the end cap and extends above the end cap. An insulating sleeve is eccentrically provided on the top of the second gear, and a connecting rod is fitted on the insulating sleeve.

[0008] By adopting the above technical solution, since the transmission ratio of the first gear and the second gear is greater than three, when the first gear is turned by the shaft, the first gear rotates one revolution while the second gear rotates more than three revolutions. This causes the insulating sleeve of the second gear to be misaligned, thereby allowing the connecting rod to quickly disengage from the terminal block and achieve rapid disconnection.

[0009] In a further embodiment, a first limiting rod and a second limiting rod located inside the housing are fixedly installed at the bottom of the end cap, and a first arc-shaped groove and a second arc-shaped groove are provided at the top of the first gear. The first limiting rod and the second limiting rod are used to limit the rotation angle of the first gear with the first arc-shaped groove and the second arc-shaped groove, respectively.

[0010] By adopting the above technical solution, limiting the rotation angle of the first gear can avoid incomplete disconnection caused by excessive rotation angle of the first gear, thus ensuring the function of rapid disconnection.

[0011] In a further embodiment, the central shaft of the first gear is made of an insulating material.

[0012] In a further embodiment, a sealant is provided at the joint between the end cap and the housing, and a through hole is provided at the top of the end cap, in which a valve core is installed.

[0013] By adopting the above technical solution, the valve core can fill the sealed housing with arc-extinguishing gas, making the device suitable for switching on and off high-voltage circuits.

[0014] In a further embodiment, the bottom of the end cap and the inner wall of the housing are both coated with an insulating coating with a thickness of 0.1-0.2 mm.

[0015] In a further embodiment, each of the four bottom corners of the housing is provided with a protrusion, and the top of the protrusion is provided with a downward through mounting hole.

[0016] In summary, this utility model has the following beneficial effects:

[0017] 1. By setting the transmission ratio of the first gear and the second gear to be greater than three, this device has a rapid cutting effect. When the first gear is turned by the shaft, the first gear rotates one revolution while the second gear rotates more than three revolutions. This causes the insulating sleeve of the second gear to misalign, thereby allowing the connecting rod to quickly disengage from the terminal block and achieve a rapid cutting effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram illustrating the internal structure of the shell of this utility model.

[0020] In the diagram, 1 is the housing; 2 is the end cap; 3 is the terminal block; 4 is the sealing ring; 5 is the rotary switch; 51 is the first gear; 52 is the second gear; 6 is the insulating sleeve; 7 is the connecting rod; 8 is the first limiting rod; and 9 is the second limiting rod. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings.

[0022] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to the attached figures. Figure 1 In this specification, the terms "bottom surface" and "top surface," "inner" and "outer" refer to the direction toward or away from the geometry of a specific component. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this specification, "a plurality of" means two or more, unless otherwise explicitly and specifically defined by the direction of the center.

[0023] Example 1:

[0024] like Figures 1-2As shown, a quick-opening switch rotary cut-off structure includes a housing 1, the top of which is completely open. An end cap 2 is fixedly installed on the top of the housing 1. The bottom of the end cap 2 and the inner wall of the housing 1 are coated with an insulating coating with a thickness of 0.1-0.2 mm. Each of the four corners of the bottom of the housing 1 has a protrusion, the top of which has a downward-through mounting hole. Sealant is applied to the contact area between the end cap 2 and the housing 1. A through hole is provided on the top of the end cap 2, and a valve core is installed inside the through hole. Two through holes are provided on the left side of the housing 1, symmetrically arranged front and back. A terminal post 3 is fixedly installed inside the through hole, and a sealing ring 4 is fitted on the terminal post 3 to completely seal the middle section of the through hole. A rotary switch 5 is provided at the inner bottom of the housing 1. The rotary switch 5 includes a first gear 51 and a second gear 52, both of which are rotatably mounted. At the bottom of the housing 1, the axes of the first gear 51 and the second gear 52 are vertically arranged, and the first gear 51 and the second gear 52 mesh. The number of teeth of the first gear 51 is more than three times the number of teeth of the second gear 52. The first gear 51 and the second gear 52 are rotatably mounted on the inner bottom of the housing 1 via shafts. The top end of the shaft of the first gear 51 passes through the end cover 2 and extends above the end cover 2. An insulating sleeve 6 is eccentrically arranged on the top of the second gear 52, and a connecting rod 7 is sleeved on the insulating sleeve 6. The bottom of the end cover 2 is fixedly installed with a first limiting rod 8 and a second limiting rod 9 located inside the housing 1. The top of the first gear 51 is provided with a first arc-shaped groove and a second arc-shaped groove. The first limiting rod 8 and the second limiting rod 9 are used to limit the rotation angle of the first gear 51 with the first arc-shaped groove and the second arc-shaped groove, respectively. The shaft at the center of the first gear 51 is made of insulating material.

[0025] Specific implementation process: By setting the transmission ratio of the first gear and the second gear to be greater than three, this device has a rapid cutting effect. When the first gear is turned by the shaft, the first gear rotates one revolution while the second gear rotates more than three revolutions. This causes the insulating sleeve of the second gear to misalign, thereby allowing the connecting rod to quickly disengage from the terminal block and achieve a rapid cutting effect.

[0026] When this switch needs to be used in high-voltage applications, the terminals need to be symmetrically arranged on the left and right sides. A socket needs to be provided on the shaft above the end cover. The first gear is rotated by inserting an insulating rod into the socket.

[0027] The first gear and the second gear are respectively mounted on two shafts. The bottom ends of the two shafts are installed at the bottom of the housing through bearings. Therefore, rotating the shafts will drive the first gear to rotate. The first gear meshes with the second gear, realizing the function of meshing transmission.

[0028] like Figure 2As shown, when the terminal block is located at one end inside the housing and is installed on the same side, it needs to have a certain degree of flexibility, such as by installing a flexible contact piece, and the length relationship between the two terminals needs to be as follows: Figure 2 The setup shown is to prevent the connecting rod from being blocked during rotation, thus preventing it from rotating.

[0029] In the embodiments disclosed in this utility model, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments disclosed in this utility model according to the specific circumstances.

[0030] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A quick-start switch rotary cut-off structure, characterized in that: The enclosure includes a housing (1) with its top completely open. An end cap (2) is fixedly installed on the top of the housing (1). Two through holes are provided on the left side of the housing (1), arranged symmetrically front to back. A terminal post (3) is fixedly installed in each through hole, and a sealing ring (4) is fitted on the terminal post (3) to completely block the middle section of the through hole. A rotary switch (5) is provided at the bottom inner side of the housing (1). The rotary switch (5) includes a first gear (51) and a second gear (52), both of which are rotatable. The first gear (51) and the second gear (52) are mounted on the bottom of the housing (1) and their axes are vertically arranged. The first gear (51) and the second gear (52) mesh with each other. The number of teeth of the first gear (51) is more than three times the number of teeth of the second gear (52). The first gear (51) and the second gear (52) are both rotatably mounted on the inner bottom of the housing (1) through a shaft. The top end of the shaft of the first gear (51) passes through the end cover (2) and extends to the top of the end cover (2). An insulating sleeve (6) is eccentrically arranged on the top of the second gear (52). A connecting rod (7) is sleeved on the insulating sleeve (6).

2. The rotary cutting structure for a quick-opening switch according to claim 1, characterized in that: The bottom of the end cap (2) is fixedly installed with a first limiting rod (8) and a second limiting rod (9) located inside the housing (1). The top of the first gear (51) is provided with a first arc groove and a second arc groove. The first limiting rod (8) and the second limiting rod (9) are used to limit the rotation angle of the first gear (51) with the first arc groove and the second arc groove, respectively.

3. The rotary cutting-off structure for a quick-opening switch according to claim 1, characterized in that: The shaft at the center of the first gear (51) is made of insulating material.

4. The rotary cutting structure for a quick-opening switch according to claim 1, characterized in that: The end cap (2) is fitted with sealant at the joint with the housing (1), and the top of the end cap (2) is provided with a through hole, in which a valve core is installed.

5. The rotary cutting structure for a quick-opening switch according to claim 1, characterized in that: The bottom of the end cap (2) and the inner wall of the housing (1) are both coated with an insulating coating with a thickness of 0.1-0.2 mm.

6. The rotary cutting-off structure for a quick-opening switch according to claim 1, characterized in that: The bottom four corners of the housing (1) are provided with protrusions, and the top of the protrusions is provided with downward through mounting holes.

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