A practical new type of isolating switch

Abstract

The present application relates to the field of low-voltage disconnecting switch, a practical new type of disconnecting switch, wherein the handle drive connects the translation of the block, the translation of the block connects the lever, the upper end of the damping accumulator and the air bag assembly is respectively hinged with both ends of the lever, the lower end of the damping accumulator and the air bag assembly is respectively hinged with the mechanism shell, the air bag assembly has arc extinguishing exhaust pipe; single pole assembly in rotation block and moving contact assembly connection and synchronous rotation, arc extinguishing exhaust pipe and tubular airway butt joint, rotating handle can simultaneously drive translation of the block translation and rotation of the block rotation, when the rotating handle drives the moving contact assembly to rotate, so that the static contact piece and moving contact assembly realize contact and separation, and through the translation of the block translation drive air bag assembly compression, make the air bag assembly from tubular airway to the contact point of static contact piece and moving contact assembly blow, make arc lead into arc chamber. The disconnecting switch can blow the arc to the arc chamber, and the timing of blowing can be controlled through the linkage control of switch operation.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of low-voltage disconnecting switch, in particular to a practical new type of disconnecting switch. BACKGROUND

[0002] Low-voltage disconnecting switch is used for low-voltage switching circuit, which is the most frequently used electrical appliance in our daily life, and the low-voltage disconnecting switch can also change the operation mode of the circuit.

[0003] The low-current disconnecting switch commonly seen in the market cannot completely absorb the arc generated during the opening of the switch by the arc extinguishing grid, and the remaining arc continues to burn between the contacts, so that the performance of the switch cannot reach the ideal effect, and the service life of the switch is shortened with the extension of the use time. SUMMARY

[0004] To solve the above problems, the present application provides a practical new type of disconnecting switch, which can blow the arc to the arc extinguishing chamber and control the timing of blowing by linkage control of the switch operation.

[0005] To achieve the above-mentioned purposes, the technical scheme adopted by the present application is as follows:

[0006] A practical new type of disconnecting switch, comprising an operating mechanism and a single-pole assembly, wherein the operating mechanism comprises a mechanism housing, and a handle, a translation knob, a lever, a damping accumulator, a rotation knob and an air bag assembly installed in the mechanism housing, wherein the handle is drivingly connected to the translation knob, the translation knob is connected to the lever, the mechanism housing is provided with a chamber corresponding to both ends of the lever, the damping accumulator and the air bag assembly are respectively arranged in the two chambers, the upper ends of the damping accumulator and the air bag assembly are respectively hinged to both ends of the lever, the lower ends of the damping accumulator and the air bag assembly are respectively hinged to the mechanism housing, the air bag assembly is hollow, and the air bag assembly has an arc extinguishing exhaust pipe;

[0007] The single-pole assembly comprises an assembly housing, and a static contact, an arc extinguishing chamber and a movable contact assembly arranged in the assembly housing, the movable contact assembly of the rotation knob rotates synchronously with the rotation knob, the assembly housing has a tubular air channel, and the contact point of the static contact and the movable contact assembly is arranged between the tubular air channel and the arc extinguishing chamber;

[0008] The arc extinguishing exhaust pipe is connected to the tubular air channel, and the rotation of the handle can simultaneously drive the translation of the translation knob and the rotation of the rotation knob, when the handle is rotated, the movable contact assembly is rotated, so that the static contact and the movable contact are contacted and separated, and the air bag assembly is compressed by the translation of the translation knob, so that the air bag assembly blows air from the tubular air channel to the contact point of the static contact and the movable contact assembly, and the arc is introduced into the arc extinguishing chamber.

[0009] As preferred, the air bag assembly comprises an elastically deformable cavity body and a return spring, the return spring is arranged in the inner cavity of the elastically deformable cavity body, the top and bottom of the elastically deformable cavity body are respectively provided with a first hinge hole and a second hinge hole.

[0010] As preferred, the elastically deformable cavity body is a cylindrical elastically deformable rubber cavity body.

[0011] As preferred, the inner cavity of the elastically deformable cavity body is of a variable cross-section shape, the cross-sectional area of the middle part of the inner cavity is larger than that of the two sides, and the inner cavity is of a spindle shape.

[0012] As preferred, the damping accumulator has an energy storage critical point, when the lever drives the damping accumulator to swing over the energy storage critical point, the damping accumulator is quickly released to compress the air bag assembly.

[0013] As preferred, the static contact piece is provided with a static contact head adjacent to the arc extinguishing chamber, the static contact head is provided with a gas passing hole, the gas passing hole is communicated with the tubular gas duct, the static contact head is located above the opening of the arc extinguishing chamber, and the contact point is located between the gas passing hole and the arc extinguishing chamber.

[0014] As preferred, the monopole assembly is internally provided with two symmetrically arranged static contact pieces.

[0015] As preferred, the monopole assembly has two groups, and the two groups of monopole assemblies are respectively installed on the two sides of the operating mechanism.

[0016] The beneficial effects of using the present application are:

[0017] The isolating switch drives the air bag assembly to compress and release through the parallel movement of the operating mechanism, the compression of the air bag assembly generates air flow to blow to the static contact heads of the left and right monopole bodies, the closing of the operating mechanism drives the monopole body to realize current on-off, and the air flow blows the arc generated by the monopole to the arc extinguishing chamber.

[0018] The isolating switch only needs to move the operating mechanism to realize the compression and release of the air bag, and the spring is arranged in the elastically deformable cavity body, the elastically deformable cavity body releases air flow after the spring is compressed, the present switch does not need to rely on an additional air bag to realize this function, and the operating mechanism can drive the air bag assembly to realize the air suction and blowing effect. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the isolating switch of the present application.

[0020] Figure 2 It is an exploded schematic diagram of the operating mechanism of the isolating switch of the present application.

[0021] Figure 3 Figure 4 is an internal schematic diagram of the single-pole assembly in the closed state of the operating mechanism of the utility model.

[0022] Figure 4 Figure 5 is an internal schematic diagram of the operating mechanism in the closed state of the utility model.

[0023] Figure 5 Figure 6 is an internal schematic diagram of the single-pole assembly in the open state of the operating mechanism of the utility model.

[0024] Figure 6 Figure 7 is an internal schematic diagram of the operating mechanism in the open state of the utility model.

[0025] Figure 7 Figure 8 is a schematic diagram of the air bag assembly in the operating mechanism of the utility model.

[0026] The reference signs include:

[0027] 10 - operating mechanism, 11 - upper cover, 12 - handle, 13 - translation knob, 14 - upper shell, 15 - lever, 16 - damping accumulator, 17 - rotation knob, 18 - base, 19 - air bag assembly, 191 - arc extinguishing exhaust pipe, 192 - elastic deformation cavity, 193 - first hinge hole, 194 - second hinge hole, 20 - single-pole assembly, 21 - tubular air duct, 22 - static contact piece, 221 - static contact, 222 - contact point, 223 - air passage hole, 23 - arc extinguishing chamber, 24 - right shell, 25 - movable contact assembly, 251 - movable contact. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the technical solution more clear and obvious, the technical solution will be further described in detail below in combination with specific embodiments. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the technical solution.

[0029] As Figures 1-7As shown, the utility model discloses a disconnecting switch, including operating mechanism 10 and single pole subassembly 20, wherein operating mechanism 10 includes mechanism shell and handle 12, translation shift block 13, shift lever 15, damping accumulator 16, rotary shift block 17 and air bag assembly 19 installed in mechanism shell, handle 12 drive connection translation shift block 13, translation shift block 13 connects shift lever 15, mechanism shell is provided with chamber at both ends of shift lever 15, and damping accumulator 16 and air bag assembly 19 are placed in two chambers respectively, the upper end of damping accumulator 16 and air bag assembly 19 is articulated with both ends of shift lever 15 respectively, and the lower end of damping accumulator 16 and air bag assembly 19 is articulated with mechanism shell respectively, air bag assembly 19 is hollow inside, and air bag assembly 19 has arc extinguishing exhaust pipe 191, single pole subassembly 20 includes subassembly shell 24 and static contact piece 22, arc extinguishing chamber 23 and movable contact assembly 25 arranged in subassembly shell 24, rotary shift block 17 and movable contact assembly 25 are connected and synchronous rotation, and subassembly shell 24 has tubular air passage 21, and the contact point 222 of static contact piece 22 and movable contact assembly 25 is arranged between tubular air passage 21 and arc extinguishing chamber 23, in the utility model, single pole subassembly 20 has two symmetrical static contact pieces 22 inside, arc extinguishing exhaust pipe 191 is docked with tubular air passage 21, and rotating handle 12 can simultaneously drive translation shift block 13 to translate and rotary shift block 17 to rotate, when rotating handle 12, static contact piece 22 and movable contact assembly 25 realize opening and closing, shift lever 15 is driven to move in parallel by translation shift block 13, and air bag assembly 19 is compressed, thereby generating airflow. Air bag assembly 19 is blown by tubular air passage 21 to the contact point 222 of static contact piece 22 and movable contact assembly 25, and arc is introduced into arc extinguishing chamber 23.

[0030] The specific structure of the disconnecting switch is described below in detail.

[0031] As shown in Figure 1 , operating mechanism 10 has one, single pole subassembly 20 has two groups, and the two groups of single pole subassembly 20 are respectively installed on both sides of operating mechanism 10.

[0032] As shown in Figure 2 , operating mechanism 10 includes upper cover 11, handle 12, translation shift block 13, upper shell 14, shift lever 15, damping accumulator 16, rotary shift block 17, base 18 and air bag assembly 19, please combine Figure 4 , the upper shell 14 and the base 18 are combined to form two cavities inside, the air bag assembly 19 and the damping accumulator 16 are arranged in the two cavities respectively, and the shift lever 15 is arranged inside the upper shell 14. The upper cover 11 covers the top of the upper shell 14, and a cavity is formed between the upper cover 11 and the upper shell 14, and the handle 12 and the translation shift block 13 are arranged in the cavity between the upper cover 11 and the upper shell 14.

[0033] As shown in Figure 7As shown, in this embodiment, the airbag assembly 19 includes an elastic deformable cavity 192 and a return spring. The return spring is disposed in the internal cavity of the elastic deformable cavity 192. The top and bottom of the elastic deformable cavity 192 have a first hinge hole 193 and a second hinge hole 194, respectively.

[0034] like Figure 3 As shown, when the moving contact 251 of the moving contact assembly 25 contacts the stationary contact 221 of the stationary contact piece 22, the disconnecting switch is in the closed state. Figure 4 As shown, when the circuit is closed, the airbag assembly 19 in the operating mechanism 10 is oriented to the right, the reset spring inside the elastic deformable cavity 192 is in a fully released state, the damping accumulator 16 is in a nearly vertical state, but the top is slightly biased to the right, and the spring on the damping accumulator 16 is in a compressed state.

[0035] like Figure 5 When the moving contact 251 of the moving contact assembly 25 separates from the stationary contact 221 of the stationary contact piece 22, this disconnecting switch is in the open state. For example... Figure 6 As shown, when the circuit is open, the stationary contact 221 and the moving contact 251 are separated.

[0036] Combination Figure 4 and Figure 6 As shown, preferably, the damping accumulator 16 has an energy storage critical point. When the lever 15 drives the damping accumulator 16 to swing past the energy storage critical point, the damping accumulator 16 quickly releases, causing the airbag assembly 19 to compress rapidly. During the process of this disconnecting switch changing from the closed state to the open state, the damping accumulator 16 first... Figure 4 The energy storage process involves the accumulator transitioning from a slightly right-leaning position to an upright position. After the damping accumulator 16 passes the upright position, it releases its energy. At this point, the stationary contact 221 and the moving contact 251 completely disengage, potentially generating an electric arc. Due to the action of its internal spring, the damping accumulator 16 rapidly changes from an upright position to a position with its top tilted to the left. During this process, the return spring in the airbag assembly 19 is gradually compressed, reducing the volume of the internal chamber of the elastic deformation cavity 192. Air inside the elastic deformation cavity 192 is blown out through the arc-extinguishing exhaust pipe 191, and the blown gas is introduced into the monopole assembly 20 through the tubular air passage 21. The gas flow path during this process is as follows: Figure 3 As indicated by the middle arrow, the arc is ultimately directed to the arc-extinguishing chamber 23 and discharged from the monopole assembly 20 through the vent on the assembly housing 24. At this point, the damping accumulator 16 is fully released, and the interior of the monopole assembly 20 is as follows: Figure 6 The state shown.

[0037] like Figure 4As shown, as preferred, the elastic deformation cavity body 192 is a columnar elastic rubber cavity body. The internal cavity of the elastic deformation cavity body 192 is of a variable cross-section shape, the cross-sectional area of the middle part of the internal cavity of the elastic deformation cavity body 192 is larger than that of the two sides, and the internal cavity of the elastic deformation cavity body 192 is spindle-shaped. During compression of the elastic deformation cavity body 192, the elastic deformation cavity body 192 can be deformed and expanded outward along the part with a larger cross-sectional area, so that the compression state of the elastic deformation cavity body 192 can be controlled, and the elastic deformation cavity body 192 becomes a short columnar structure as a whole.

[0038] As shown in the drawings, Figure 3 As shown, the static contact piece 22 has a static contact 221 arranged close to the moving contact assembly 25, the static contact 221 is provided with a gas passing hole 223, the gas passing hole 223 is in communication with the tubular air duct 21, the static contact 221 is located above the opening of the arc extinguishing chamber 23, and the contact point 222 is located between the gas passing hole 223 and the arc extinguishing chamber 23, which can further enhance the strength and directionality of the gas during arc striking.

[0039] The disconnector is compressed and released by the movement of the operating mechanism 10, and the compression of the air bag assembly 19 generates air flow to the static contacts of the left and right single pole bodies, the closing of the operating mechanism 10 drives the single pole body to realize current on-off, and the air flow blows the arc generated by the single pole to the arc extinguishing chamber 23, the arc extinguishing effect is far superior to that of the prior art, and the blowing action is synchronized with the switching action, and the blowing timing is accurate, without additional blowing mechanism.

[0040] The above is only the preferred embodiment of the present application, and those skilled in the art can make many changes in specific implementation and application range according to the technical content of the present application, as long as these changes do not deviate from the concept of the present application, they all belong to the protection scope of the present patent.

Claims

1. A practical new type of disconnecting switch, characterized in that: The device includes an operating mechanism and a single-pole assembly. The operating mechanism includes a housing, a handle, a translation block, a lever, a damping accumulator, a rotating block, and an airbag assembly installed within the housing. The handle is driven by the translation block, which is connected to the lever. The housing has chambers at both ends corresponding to the lever. The damping accumulator and the airbag assembly are respectively placed in the two chambers. The upper ends of the damping accumulator and the airbag assembly are hinged to both ends of the lever, and the lower ends of the damping accumulator and the airbag assembly are hinged to the housing. The airbag assembly is hollow and has an arc-extinguishing exhaust pipe. The single-pole assembly includes an assembly housing, and a stationary contact piece, an arc-extinguishing chamber, and a moving contact assembly disposed inside the assembly housing. The moving contact assembly of the rotating toggle block rotates synchronously with it. The assembly housing has a tubular air passage, and the contact point of the stationary contact piece and the moving contact assembly is disposed between the tubular air passage and the arc-extinguishing chamber. The arc-extinguishing exhaust pipe is connected to the tubular air passage. Turning the handle can simultaneously drive the translation block to move and the rotation block to rotate. When the handle is turned, the moving contact assembly rotates, thereby enabling the stationary contact piece and the moving contact to make contact and separate. The translation block drives the airbag assembly to compress, causing the airbag assembly to blow air from the tubular air passage to the contact point between the stationary contact piece and the moving contact assembly, thus introducing the electric arc into the arc-extinguishing chamber.

2. The novel disconnecting switch according to claim 1, characterized in that: The airbag assembly includes an elastic deformable cavity and a return spring. The return spring is disposed in the internal cavity of the elastic deformable cavity. The top and bottom of the elastic deformable cavity have a first hinge hole and a second hinge hole, respectively.

3. The novel disconnecting switch according to claim 2, characterized in that: The elastic deformable cavity is a columnar elastic rubber cavity.

4. The novel disconnecting switch according to claim 2, characterized in that: The internal cavity of the elastic deformable cavity has a variable cross-sectional shape, the cross-sectional area of ​​the middle part of the internal cavity is larger than the cross-sectional area of ​​the internal cavities on both sides, and the internal cavity of the elastic deformable cavity is spindle-shaped.

5. The novel disconnecting switch according to claim 1, characterized in that: The damping accumulator has an energy storage critical point. When the lever drives the damping accumulator to swing past the energy storage critical point, the damping accumulator releases rapidly, so that the airbag assembly is compressed quickly.

6. The novel disconnecting switch according to claim 1, characterized in that: The stationary contact piece has a stationary contact located near the arc-extinguishing chamber. An air passage is formed on the stationary contact, which is connected to a tubular air channel. The stationary contact is located above the opening of the arc-extinguishing chamber, and the contact point is located between the air passage and the arc-extinguishing chamber.

7. The novel disconnecting switch according to claim 1, characterized in that: The unipolar component has two symmetrically arranged static contact plates inside.

8. The novel disconnecting switch according to claim 1, characterized in that: There are two sets of unipolar components, and the two sets of unipolar components are respectively installed on both sides of the operating mechanism.

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