Electric isolating switch

Abstract

The utility model discloses an electric disconnecting switch, which is characterized by comprising a base, two groups of insulating terminals are symmetrically arranged on the base, the insulating terminals are fixedly provided with a static contact seat, the static contact seat is provided with a static contact, the base is provided with a rotary contact device, and the rotary contact device is provided with a rotating shaft. The rotary contact device comprises conductive arms, a transmission rod and a rotary drum which are symmetrically arranged, the transmission rod is arranged in the rotary drum, the rotary drum is movably connected with the base, the conductive arms are arranged on the outer side of the rotary drum, a transmission gear is arranged below the base, the transmission gear is connected with the transmission rod, and the transmission gear is connected with a driving motor. According to the utility model, through the arrangement of the rotary contact device, the conductive arm can be rotated and retracted during opening and is far away from the static contact in a relatively limited space, so that the structure is more compact; according to the utility model, a single driving motor is used to realize segmented control of different motion states of unfolding, folding and rotating the conductive arm at a constant speed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of isolating switch, more specifically, it relates to a kind of electric isolating switch. BACKGROUND

[0002] At present, isolating switch is a kind of switch device mainly used for "isolating power supply, switching operation, to connect and cut off small current circuit", mainly through the circuit intercommunication condition of closing or opening.

[0003] At present, the Chinese patent with the publication number CN202223054051.1 discloses a high-voltage isolating switch, which comprises a base, a rubber pad, a first insulator, a contact connecting seat, a lifting switch, and a second insulator. The base is a four-edged rectangular channel steel with a rubber pad bonded to the bottom end. A threaded first insulator is installed on the top right side of the base. A bolt-fixed contact connecting seat is installed on the top end of the first insulator. A slidingly connected lifting switch is installed on the left end of the contact connecting seat. A second insulator is installed on the left end of the lifting switch.

[0004] However, the existing technology still has some defects. The distance of opening is small. When the switch is in the open state, the air insulation performance may decrease or be affected by external factors, causing arcing between the contacts, which may still be electrified even if the power should be cut off. This greatly increases the risk of electric shock when operating personnel accidentally touch the electrified part. The contact surface is small, and the electrical contact is poor when closing. Poor contact and overheating may further cause phase-to-phase short circuit or ground fault. INVENTION CONTENTS

[0005] To overcome the shortcomings of the prior art, the utility model provides an electric isolating switch.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a base is provided, two groups of insulating terminals are symmetrically arranged on the base, a static contact seat is fixedly installed on the insulating terminal, a static contact is arranged on the static contact seat, a rotary contact device is arranged on the base, the rotary contact device comprises symmetrically arranged conductive arms, a transmission rod, and a rotating drum, the transmission rod is arranged inside the rotating drum, the rotating drum is movably connected to the base, the conductive arms are arranged outside the rotating drum, a transmission gear is arranged below the base, the transmission gear is connected to the transmission rod, and a driving motor is connected to the transmission gear.

[0007] The utility model is further provided as follows: a conical gear A is arranged on the upper part of the transmission rod, a corresponding conical gear B is arranged on the conductive arm, and the conical gear A and the conical gear B are movably connected.

[0008] The utility model further sets up: the base is provided with the through groove, the rotary drum is provided with the buckle protruding, the transmission gear is provided with the card slot B that is suitable with buckle protruding, buckle protruding passes through contact contact card slot B.

[0009] The utility model further sets up: buckle protruding includes fixed part, movable part, spring A of contact fixed part, movable part includes connecting cavity, protruding piece, spring A sets up in connecting cavity, protruding piece is provided with inclined plane A with step.

[0010] The utility model further sets up: the groove is provided with the transition inclined plane that is suitable with inclined plane A.

[0011] The utility model further sets up: bottom plate is provided with locking device, including protruding piece A, spring B, protruding piece B, protruding piece A, protruding piece B are provided with suitable inclined plane, bottom plate is provided with opening A, opening B, protruding piece A is provided with spring B, protruding piece A can from opening A stretch out contact buckle protruding, protruding piece B can from opening B stretch out contact rotary drum, rotary drum is provided with the card slot A that is suitable with protruding piece B, protruding piece B is provided with inclined plane B.

[0012] The utility model further sets up: conductive arm is provided with conductive protruding, conductive protruding (211) is close to the direction of conductive arm unfolding movement, rotary drum is suitable with conductive arm.

[0013] Summarized above, the utility model has following beneficial effect: the utility model discloses through setting rotary contact device, so that the utility model opens the gate, and conductive arm can rotate and be stored, and is away from static contact in more limited space, and the structure is more compact, closes the gate, and only needs small space to simply unfold conductive arm, and rotates conductive arm and completes quick closing, and the utility model uses single drive motor to realize the different motion state segmented control of uniform speed of unfolding conductive arm, storing conductive arm, rotating conductive arm, and the operation is simple and convenient, and is very labor-saving. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is the structural schematic diagram of this embodiment;

[0015] Fig. 2 It is the side sectional view at A-A of this embodiment;

[0016] Fig. 3 It is the partial sectional view at B of this embodiment;

[0017] Fig. 4 It is the sectional view at C-C of this embodiment;

[0018] Fig. 5 It is the closing state schematic diagram of this embodiment;

[0019] Fig. 6 This is a schematic diagram of the tripped state in this embodiment;

[0020] Reference numerals: 1. Base; 11. Groove; 111. Transition slope; 12. Locking device; 121. Protrusion A; 122. Spring B; 123. Protrusion B; 1231. Slope B; 2. Rotary contact device; 21. Conductive arm; 211. Conductive protrusion; 22. Transmission rod; 221. Bevel gear A; 222. Bevel gear B; 23. Rotary drum; 231. Slot A; 3. Buckle protrusion; 31. Fixed part; 32. Movable part; 321. Protrusion; 3211. Slope A; 322. Spring A; 4. Transmission gear; 41. Slot B; 5. Drive motor. Detailed Implementation

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

[0022] This embodiment discloses an electrically operated disconnect switch, such as... Figs. 1-2 As shown, the device includes a base 1, on which two sets of insulating terminals are symmetrically arranged. A stationary contact seat is fixedly mounted on each insulating terminal, and a stationary contact is mounted on the stationary contact seat. A rotary contact device 2 is mounted on the base 1. The rotary contact device 2 includes a symmetrically arranged conductive arm 21, a transmission rod 22, and a rotating drum 23. The transmission rod 22 is located inside the rotating drum 23, which is movably connected to the base 1 and can rotate freely relative to the base 1. The conductive arm 21 is located outside the rotating drum 23 and unfolds to simultaneously contact the two sets of stationary contacts when the circuit is closed. A transmission gear 4 is located below the base 1 and is connected to the transmission rod 22. Rotation of the transmission gear 4 causes the transmission rod 22 to rotate synchronously. The transmission gear 4 is connected to a drive motor 5. When the motor starts rotating, it drives the transmission gear 4 to move. This allows the device to be controlled by controlling the movement of the drive motor 5, making its use simple and convenient.

[0023] To further improve the design, a bevel gear A221 is provided on the upper part of the transmission rod 22, and a corresponding bevel gear B222 is provided on the conductive arm 21. The bevel gear A221 and the bevel gear B222 are movably connected. When the transmission rod rotates, it drives the bevel gear A221 to rotate, and the rotation of the bevel gear A221 drives the rotation of the bevel gear B222. The conductive arm 21 and the bevel gear B222 work together to unfold the conductive arm 21, so that when the transmission rod 22 rotates, it can drive and control the unfolding and closing of the conductive arm 21.

[0024] like Figs. 3-4As shown, the base 1 is provided with a through groove 11, the rotating drum 23 is provided with a buckle protrusion 3, the transmission gear 4 is provided with a buckle slot B41 adapted to the buckle protrusion 3, and the buckle protrusion 3 penetrates to contact the buckle slot B41. The groove 11 is provided so that the buckle protrusion 3 can slide in the groove 11. When the buckle protrusion 3 contacts the buckle slot B41 to achieve connection, the transmission gear 4 drives the rotating drum 23 to rotate synchronously, so that the conductive arm 21 contacts the static contact to achieve closing conduction.

[0025] Further improvement, the buckle protrusion 3 includes a fixed part 31, a movable part 32, a spring A322 contacting the fixed part 31, the movable part 32 includes a connecting cavity and a protruding block 321, and the spring A322 is arranged in the connecting cavity. The spring is arranged so that the buckle protrusion 3 can stretch and contract to a certain extent, and the protruding block is provided with a stepped slope A3211. The stepped slope is arranged so that the protruding block can effectively resist the lateral force when the transmission gear 4 rotates.

[0026] Further improvement, the groove 11 is provided with a transition slope 111 adapted to the slope A3211. When the new type is opened, the transition slope 111 contacts the slope A3211 when the transmission gear 4 rotates, and under the action of the rotating force, the transition slope 111 applies a pressure to the slope A3211, which overcomes the elastic force of the spring A322, so that the buckle protrusion 3 is retracted.

[0027] Further improvement, the bottom plate is provided with a locking device 12 including a protruding block A121, a spring B, and a protruding block B. The protruding block A121 and the protruding block B123 are provided with adapted slopes, the bottom plate is provided with openings A and B, the protruding block A121 is provided with a spring B122, the protruding block A121 can extend from the opening A to contact the buckle protrusion 3, the spring B122 pushes the protruding block A121 to extend from the opening A, the buckle protrusion 3 pushes the protruding block A121 to retract, and when the protruding block A121 moves left and right, it pushes the protruding block B123 to move up and down under the action of the slope. The protruding block B can extend from the opening B to contact the rotating drum 23, the rotating drum 23 is provided with a buckle slot A231 adapted to the protruding block B, the protruding block B is provided with a slope B1231, and the slope B1231 is arranged so that the protruding block B can smoothly enter the buckle slot A231 without jamming. When the conductive arm 21 needs to be expanded or closed, the protruding block B123 will extend to the buckle slot A231 to cooperate with the rotating drum 23, and the rotating drum 23 will be in a relatively static state with the bottom plate, eliminating the interference of the synchronous action of the rotating drum 23 and the traditional rod on the expansion and closing of the conductive arm 21.

[0028] As shown in the drawings, Figs. 5-6As shown, the conductive arm 21 is provided with a conductive protrusion 211 close to the unfolding movement direction of the conductive arm 21, when the conductive arm 21 is unfolded and closed, the conductive protrusion 211 will be close to and contact the static contact under the action of gravity, so that the utility has better electrical contact, the rotating drum 23 is adapted to the conductive arm 21, in the open state, the conductive arm 21 can be well stored.

[0029] The working principle of the utility model

[0030] When closing, the rotary contact device 2 of the utility model will start to work, the driving motor 5 is started to rotate to drive the transmission gear 4 to rotate, the transmission rod 22 connected with the transmission gear 4 rotates, the bevel gear A 221 arranged on the transmission rod 22 drives the bevel gear B 222 to rotate, the protrusion B will block the rotating drum 23 so that the rotating drum 23 does not rotate with the transmission rod 22, so that the conductive arm 21 will be unfolded stably, the transmission gear 4 continues to rotate, the clamping groove B 41 is close to the groove 11, the buckle protrusion 3 is elongated into the clamping groove B 41 under the action of the spring A 322 elastic force, the protrusion A is stretched out under the action of the spring B 122 elastic force, the protrusion B descends under the action of gravity, the rotating drum 23 will rotate with the transmission gear 4, so that the conductive arm 21 rotates and contacts the static contact, and the closing is completed.

[0031] When opening, the driving motor 5 reverses to rotate, drives the transmission gear 4 to reverse, the transmission gear 4 will drive the rotating drum 23 to reverse, so that the conductive arm 21 is separated from the two static contacts at the same time, the transmission gear 4 continues to rotate, the buckle protrusion 3 contacts the transition slope 111, under the action of the transition slope 111 of the rotating thrust, the buckle protrusion 3 obtains the compression force of the force, the spring A 322 elastic force is overcome, the buckle protrusion 3 is compressed, the buckle protrusion 3 is separated from the clamping groove B 41, when the buckle protrusion 3 is compressed, the protrusion A will be pushed, so that the protrusion A moves transversely and lifts the protrusion B, the lifted protrusion B will fix the rotating drum 23, the transmission gear 4 continues to rotate, the unfolded conductive arm 21 will be stored.

[0032] The above only for the preferred embodiment of the utility model, and not for limiting the utility model, any modification, equivalent replacement, improvement etc. within the design concept of the utility model, should be included in the protection scope of the utility model.

Claims

1. An electric isolating switch comprising a base (1), two sets of insulation terminals are symmetrically arranged on the base (1), a static contact seat is fixedly installed on the insulation terminal, and the static contact seat is provided with a static contact, characterized in that: The base (1) is provided with a rotary contact device (2), the rotary contact device (2) includes symmetrical conductive arms (21), a transmission rod (22), a rotating drum (23), the transmission rod (22) is arranged inside the rotating drum (23), the rotating drum (23) is movably connected with the base (1), the conductive arms (21) are arranged outside the rotating drum (23), a transmission gear (4) is arranged below the base (1), the transmission gear (4) is connected with the transmission rod (22), and the transmission gear (4) is connected with a driving motor (5).

2. An electrically operated isolating switch according to claim 1, characterised in that: The upper portion of the transmission rod (22) is provided with a bevel gear A (221), the conductive arms (21) are provided with a corresponding bevel gear B (222), and the bevel gear A (221) is movably connected with the bevel gear B (222).

3. An electrically operated isolating switch according to claim 1, characterised in that: The base (1) is provided with a through groove (11), the rotating drum (23) is provided with a buckle protrusion (3), the transmission gear (4) is provided with a buckle groove B (41) corresponding to the buckle protrusion (3), and the buckle protrusion (3) penetrates and contacts the buckle groove B (41).

4. An electrically operated isolating switch according to claim 3, characterised in that: The buckle protrusion (3) includes a fixed part (31), a movable part (32), a spring A (322) contacting the fixed part (31), the movable part (32) includes a connecting cavity and a protruding block (321), the spring A (322) is arranged in the connecting cavity, and the protruding block (321) is provided with a stepped inclined surface A (3211).

5. An electrically operated isolating switch according to claim 3, characterised in that: The groove (11) is provided with a transition inclined surface (111) corresponding to the inclined surface A (3211).

6. An electrically operated isolating switch according to claim 3, characterised in that: The bottom plate is provided with a locking device (12) including a protruding block A (121), a spring B (122) and a protruding block B (123) with an inclined surface, the protruding block A (121) and the protruding block B (123) are provided with corresponding inclined surfaces, the bottom plate is provided with openings A and B, the protruding block A (121) is provided with the spring B (122), the protruding block A (121) can be extended from the opening A to contact the buckle protrusion (3), the protruding block B can be extended from the opening B to contact the rotating drum (23), the rotating drum (23) is provided with a buckle groove A (231) corresponding to the protruding block B, and the protruding block B is provided with an inclined surface B (1231).

7. An electrically operated isolating switch according to claim 1, characterised in that: The conductive arms (21) are provided with conductive protrusions (211), the conductive protrusions (211) are close to the extension movement direction of the conductive arms (21), and the rotating drum (23) is corresponding to the conductive arms (21).

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