CN215008040U - Isolating switch - Google Patents

Abstract

The utility model provides an isolating switch, which comprises a shell, a shell cover, an operating mechanism, a contact system and a switching-on/off indicator, the contact system comprises a bracket, wherein the bracket is provided with a mounting groove, the bracket is provided with a sliding seat which is matched with the mounting groove and slides, an energy storage spring is arranged between the sliding seat and the moving contact, the operating mechanism comprises a handle, a stop piece and a second return spring, the handle is provided with a linkage lug which is used for driving the sliding seat to drive the support to move, the right side of the upper part of the support in the shell is provided with a containing groove, the second return spring is positioned in the containing groove and is abutted against one end of the stopping piece, the stopping piece is provided with a limiting block for blocking the closing movement track of the linkage lug, the support is provided with a clamping hook of which the top is bent towards one side of the accommodating groove, and the stop piece is provided with a stop block on the downward displacement track of the clamping hook. The utility model discloses simple structure, be convenient for assembly, stability height and be convenient for operate.

Description

Isolating switch

Technical Field

The utility model relates to the technical field of electrical apparatus, concretely relates to isolator.

Background

The small-sized isolating switch is suitable for a power distribution and control loop with the alternating current of 50Hz or 60Hz and the rated working voltage of 220/380V or below, is mainly used as a main switch of terminal electrical appliances, can also be used for controlling various heterogeneous motors, small-power electrical appliances, illumination and the like, and is widely applied to places such as industrial and mining enterprises, high-rise buildings, businesses, families and the like.

The isolating switch comprises a shell, an operating mechanism, a contact system and a switching-on/off indicating mechanism, the existing isolating switch operating mechanism is unreasonable in design, the switching-on time of the switch is easily overlong, arcing is easily caused between a moving contact and a static contact, even the contact is burnt, the switch loses effectiveness, the capability of protecting equipment cannot be realized, and the service life of a product is short, the safety performance is low and the performance is unreliable.

The application numbers are: CN201721172991.7, patent name: the Chinese patent of the isolating switch discloses an isolating switch, which comprises a shell, an operating mechanism, a contact system and a switching-on and switching-off indicating piece, wherein the contact system comprises a moving contact support, a moving contact, a fixed contact and a return spring, the moving contact is arranged in a linkage manner with the moving contact support, the fixed contact is matched with the moving contact, the return spring is matched with the moving contact support, the operating mechanism comprises a handle, a driving seat and an energy storage spring, the driving seat is arranged in a linkage manner with the handle and is used for driving the moving contact support, the energy storage spring is connected between the handle and the driving seat, a limiting piece is movably arranged in the shell and is blocked on the closing motion track of the driving seat, a limiting lug matched with the limiting piece is arranged on the driving seat, an energy storage limiting groove and an energy release guide surface which are matched with the limiting lug are sequentially arranged on one side of the limiting piece, when the driving seat rotates along with the handle to the closing direction, spacing lug on the drive seat slides to energy storage spacing inslot and makes the energy storage spring energy storage, and when handle drive seat and unblock locating part, spacing lug on the drive seat slides on to the energy release spigot surface and makes energy storage spring release, and drive seat can rotate fast to the switching-on position, the casing in be provided with the matched with torsional spring with the locating part, the opposite side department that corresponds the locating part in the casing is provided with the locating lever, torsional spring suit on the locating lever, the one end of torsional spring is contradicted on the locating part, the other end of torsional spring is contradicted on the gag lever post in the casing. When the energy storage limiting device is operated, an operator rotates the handle, the handle drives the driving seat to rotate, when the limiting lug on the driving seat slides to the energy storage limiting groove, the handle compresses the energy storage spring, after the energy storage of the energy storage spring is finished, the handle drives the driving seat and unlocks the limiting part, the limiting lug on the driving seat slides to the energy release guide surface from the energy storage limiting groove, the driving seat loses the limitation of the limiting part, the driving seat rapidly rotates to the switching-on position, and the rapid switching-on of the switch is realized. ' it realizes quick combined floodgate through the cooperation of handle, drive seat, energy storage spring, spacing subassembly, torsional spring, moving contact support and reset spring, and its spare part is many, and the installation is too concentrated, leads to workman assembly switch inefficiency. Energy storage spring and torsional spring all carry out energy storage and spacing through the torsion of circumference, and its stability is low, and leads to the rotation moment of torsion increase of handle, and the control switch is opened and close labouring.

SUMMERY OF THE UTILITY MODEL

Based on the problem, the utility model aims to provide a simple structure, be convenient for assembly, stability height and be convenient for the isolator of operation.

Aiming at the problems, the following technical scheme is provided: an isolating switch comprises a shell, a shell cover, an operating mechanism, a contact system and a switching-on and switching-off indicating piece, wherein the contact system comprises a support, a moving contact, a fixed contact and a first reset spring, the moving contact is arranged in a linkage manner with the support, the fixed contact is matched with the moving contact, the first reset spring is matched with the support, the support is provided with a mounting groove, the moving contact is clamped in the mounting groove, the support is provided with a sliding seat which is matched with the mounting groove in a sliding manner, an energy storage spring is arranged between the sliding seat and the moving contact, the operating mechanism comprises a handle, a stop piece and a second reset spring, the handle is provided with a linkage lug which is used for driving the sliding seat to drive the support to move, the stop piece is horizontally arranged between the handle and the sliding seat, the right side of the shell, which is positioned above the support, is provided with a containing groove, the second reset spring is positioned in the containing groove and abutted against one end of the stop piece, and a limit block is arranged on a switching-on motion track of the linkage lug, the support is provided with a clamping hook of which the top is bent towards one side of the accommodating groove, the stop piece is provided with a stop block on the downward displacement track of the clamping hook, and the stop piece can drive the stop block to move towards the accommodating groove through the cooperation of the linkage lug and the limiting block.

In the structure, the utility model discloses an energy storage formula structure can effectively improve the combined floodgate speed of switch, and the effectual combined floodgate that has protected moving contact and static contact has prolonged the utility model discloses a life. During operation, an operator rotates the handle, the handle drives the linkage boss to rotate, the linkage boss controls the driving seat to drive the support to move downwards, so that the moving contact is driven to move towards the static contact, when the clamping hook abuts against the stop block, the support is limited, the handle is continuously rotated, the linkage boss controls the driving seat to move relative to the support, so that the energy storage spring performs compression energy storage, when the handle rotates until the linkage boss abuts against the stop block, and when the handle is continuously rotated, the linkage boss drives the stop block to move towards the inside of the accommodating groove through the stop block driving stop piece, so that the stop block is separated from the clamping hook, the energy storage spring releases energy, the support drives the moving contact to move downwards instantly to abut against the static contact, the rapid switching-on of the utility model is realized, the damage to the contact due to overlong switching-on time is avoided, and the service life of the contact of the utility model is prolonged; realize through the reversal handle the utility model discloses a separating brake, the support resets through the drive of first reset spring with the handle, and the retainer resets through second reset spring. Compared with the existing isolating switch, the utility model has fewer parts and is convenient to assemble, thereby improving the assembly efficiency of the utility model; the retainer carries on spacingly through horizontal displacement to the trip on the support, and first reset spring adopts the column type spring with energy storage spring, has improved the utility model discloses the stability of linkage between each spare part has reduced handle pivoted moment of torsion, is convenient for the utility model discloses divide, combined floodgate operation.

The utility model discloses further set up to, be connected through U type connecting rod between handle and the slide, U type connecting rod one end is connected on the linkage lug, and the other end is connected on the upper end of slide.

Adopt above-mentioned structure, the assembly of handle and slide can be convenient for to improved the utility model discloses an assembly efficiency.

The utility model discloses further set up to, stopper one end is located the storage tank, and the other end extends to the support left side and offsets with shells inner wall, forms the reset section, be equipped with the reset block that blocks on the separating brake movement track of linkage lug on the reset section.

Adopt above-mentioned structure, can improve the stability of stopper displacement, and operating handle when breaking brake, drive the stopper through linkage lug and reset block cooperation and reset to can guarantee the reseing of stopper when second reset spring damages or when not having elasticity, the card is dead when preventing to close a floodgate next time, has improved the utility model discloses a reliability.

The utility model discloses further set up to, the section that resets is offered the tip towards one side of casing and is the spacing mouth of open-ended, be equipped with on the casing with spacing limit of mouthful looks adaptation.

In the structure, cooperate the location installation that can be convenient for the retainer through spacing mouthful and spacing, and stability when just can improving the retainer displacement, thereby improved the utility model discloses an assembly efficiency has improved the utility model discloses a reliability.

The utility model discloses further set up to, the storage tank is equipped with the baffle that relative dog set up from top to bottom near the one end of storage tank towards the opening part of cap one side.

In the structure, the limit of the accommodating groove to the retainer can be improved by arranging the baffle, so that the displacement stability of the retainer is further improved.

The utility model discloses further set up to, be equipped with the instruction mouth with the corresponding position department of divide-shut brake indicator on the casing, be equipped with the locating lever in the casing, divide-shut brake indicator cover is located on the locating lever, and sets up with the trip linkage, the trip top is equipped with the drive block towards one side of cap, set up on the divide-shut brake indicator with drive block complex bayonet socket in the relative drive block displacement direction.

In the structure, when the switch is switched on or switched off, the support controls the rotation of the switch-on/off indicating piece through the matching of the driving block on the clamping hook and the clamping opening on the switch-on/off indicating piece, so that a user can observe and confirm the state of the current switch through the indicating opening. Adopt above-mentioned structure, the installation of divide-shut brake indicator of can being convenient for, and linkage nature is high, thereby improved the utility model discloses the convenience and the reliability of assembly.

The utility model discloses further set up to, be equipped with the block groove with mounting groove inner wall looks block on the lateral wall of moving contact, it is equipped with the cushion to be located the block groove below towards cap one side in the mounting groove, the top surface of cushion is the inclined plane that sets up towards the casing downward sloping.

Adopt above-mentioned structure, the installation of moving contact can be convenient for, and the stability of moving contact can be improved, thereby improved the utility model discloses a reliability.

The utility model discloses further set up to, the cap is equipped with rather than being an organic whole setting and be used for pressing respectively and establish retainer, connecting rod, dog, second reset spring's clamp plate, limiting plate, locating plate and picture peg towards one side of casing, the picture peg is located one side of locating plate towards the casing.

Adopt above-mentioned structure, stability when can improve the fastness and the displacement of retainer, connecting rod, dog, second reset spring installation to improved the utility model discloses a reliability.

The utility model discloses further set up to, the handle both ends all are equipped with casing and cap pin joint complex connecting axle, the linkage lug is an organic whole setting with the handle.

Adopt above-mentioned structure, the installation of handle of can being convenient for, its setting that can reduce spare part has improved the utility model discloses the convenience of assembly.

The utility model discloses further set up as, the one end that the retainer is located the storage tank is equipped with the reference column that is used for the cover to establish second reset spring.

In the structure, the positioning columns are arranged, so that the second reset spring can be conveniently installed, the second reset spring can be limited, and the stability of the second reset spring is improved.

The utility model discloses further set up to, the cap is equipped with rather than being an organic whole setting and with the corresponding spacing post of locating lever towards one side of casing, the cross is personally submitted to the transversal of spacing post.

Adopt above-mentioned structure, can improve the fastness of divide-shut brake indicator, thereby improved the utility model discloses a reliability.

The utility model discloses further set up to, the slide bottom is equipped with the spacing mouth with energy storage spring looks adaptation, be equipped with on the moving contact with energy storage spring matched with arch.

Adopt above-mentioned structure, can improve energy storage spring's stability, and the installation that can be convenient for energy storage spring, thereby improved the utility model discloses a reliability and convenience.

The utility model discloses further set up to, be equipped with on the support with first reset spring matched with gag lever post, be equipped with the fixed plate that offsets with first reset spring on the casing, be equipped with on the fixed plate with first reset spring matched with spacing groove.

Adopt above-mentioned structure, the installation of first reset spring of can being convenient for, and can improve first reset spring's stability, thereby improved the utility model discloses a reliability.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the three-dimensional structure inside the middle housing of the present invention.

Fig. 3 is a schematic view of the interior of the middle housing according to the present invention.

Fig. 4 is a schematic view of the split structure of the middle operating mechanism and the contact system of the present invention.

Fig. 5 is a schematic structural view of the housing and the housing cover of the present invention.

Fig. 6 is a schematic structural diagram of the cooperation between the operating mechanism and the contact system of the present invention.

Fig. 7 is a schematic structural view of the middle support of the present invention.

Fig. 8 is a schematic structural view of the stopper of the present invention.

Fig. 9 is a schematic structural diagram of the closing of the present invention.

The reference numbers in the figures mean: 1-a shell; 2-a shell cover; 3-an operating mechanism; 4-a contact system; 5-opening and closing indicating piece; 41-a bracket; 42-moving contact; 43-a stationary contact; 44-a first return spring; 45-mounting grooves; 6-a slide seat; 61-a stored energy spring; 31-a handle; 32-a stop; 33-a second return spring; 311-linkage lug; 11-a receiving groove; 321-a limiting block; 411-hook; 322-a stop block; 7-U-shaped connecting rods; 323-reset segment; 324-a reset block; 3231-limit port; 12-a limit bar; 111-a baffle; 13-indicator port; 14-positioning rods; 4111-a drive block; 51-bayonet; 421-a clamping groove; 412-a cushion block; 22-a platen; 23-a limiting plate; 24-a positioning plate; 25-inserting plates; 312-a connecting shaft; 325-positioning column; 26-a limiting column; 62-a limiting port; 422-bump; 413-a limiting rod; 15-fixing the plate; 151-limiting groove.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

As shown in fig. 1 to 9, an isolating switch includes a housing 1, a housing cover 2, an operating mechanism 3, a contact system 4, and a switching indicator 5, where the contact system 4 includes a support 41, a movable contact 42 linked with the support 41, a fixed contact 43 matched with the movable contact 42, and a first return spring 44 matched with the support 41, the support 41 is provided with an installation groove 45, the movable contact 42 is clamped in the installation groove 45, the support 41 is provided with a sliding seat 6 sliding in fit with the installation groove 45, an energy storage spring 61 is arranged between the sliding seat 6 and the movable contact 42, the operating mechanism 3 includes a handle 31, a stopper 32, and a second return spring 33, the handle 31 is provided with a linking protrusion 311 for driving the sliding seat 6 to drive the support 41 to move, the stopper 32 is horizontally arranged between the handle 31 and the sliding seat 6, the right side of the housing 1 above the support 41 is provided with an accommodation groove 11, the second return spring 33 is located in the accommodating groove 11 and abuts against one end of the stopper 32, the stopper 321 blocking the closing movement track of the linkage protrusion 311 is arranged on the stopper 32, the hook 411 bending towards one side of the accommodating groove 11 is arranged on the support 41, the stopper 322 blocking the downward displacement track of the hook 411 is arranged on the stopper 32, and the stopper 322 is driven by the cooperation of the linkage protrusion 311 and the stopper 321 to displace towards the accommodating groove 11 by the stopper 32.

In the structure, the utility model discloses an energy storage formula structure can effectively improve the combined floodgate speed of switch, the effectual combined floodgate that has protected moving contact 42 and static contact 43 has prolonged the utility model discloses a life. During operation, an operator rotates the handle 31, the handle 31 drives the linkage boss to rotate, the linkage boss controls the driving seat to drive the bracket 41 to move downwards, thereby driving the moving contact 42 to move towards the fixed contact 43, when the hook 411 abuts against the stopper 322, the bracket 41 is limited, the handle 31 is continuously rotated, the linkage boss controls the driving seat to move relative to the bracket 41, so that the energy storage spring 61 stores energy in a compression manner, when the handle 31 rotates until the linkage boss abuts against the stopper 321, and when the handle 31 is continuously rotated, the linkage boss drives the stopper 32 to drive the stopper 322 to move towards the containing groove 11 through the stopper 321, so that the stopper 322 is separated from the hook 411, the energy storage spring 61 releases energy, the bracket 41 drives the moving contact 42 to move downwards instantly to abut against the fixed contact 43, thereby realizing the rapid closing of the utility model, and avoiding damage to the contact due to overlong closing time, the service life of the contact of the utility model is prolonged; realize through reversal handle 31 the utility model discloses a separating brake, support 41 resets through the drive of first reset spring 44 with handle 31, and retainer 32 resets through second reset spring 33. Compared with the existing isolating switch, the utility model has fewer parts and is convenient to assemble, thereby improving the assembly efficiency of the utility model; retainer 32 carries on spacingly through horizontal displacement to the trip 411 on the support 41, and first reset spring 44 adopts the column type spring with energy storage spring 61, has improved the utility model discloses the stability of linkage between each spare part has reduced handle 31 pivoted moment of torsion, is convenient for the utility model discloses divide, close a floodgate the operation.

In this embodiment, the handle 31 is connected to the slide carriage 6 through a U-shaped link, one end of the U-shaped link is connected to the linkage protrusion 311, and the other end of the U-shaped link is connected to the upper end of the slide carriage 6.

Adopt above-mentioned structure, the assembly of handle 31 and slide 6 can be convenient for, thereby improved the utility model discloses an assembly efficiency.

In this embodiment, one end of the stopper 32 is located in the accommodating groove 11, and the other end extends to the left side of the bracket 41 and abuts against the inner wall of the housing 1, so as to form a reset section, and the reset section is provided with a reset block blocking the opening motion track of the linkage protrusion 311.

Adopt above-mentioned structure, can improve the stability of stopper 32 displacement, and operating handle 31 when separating brake, drive stopper 32 through linkage lug 311 and reset block cooperation and reset to can guarantee the reseing of stopper 32 when second reset spring 33 damages or when not having elasticity, the card is dead when preventing next combined floodgate, has improved the utility model discloses a reliability.

In this embodiment, the tip is seted up towards one side of casing 1 in the section that resets and is the spacing mouth 62 of open-ended, be equipped with the spacing strip with spacing mouthful 62 looks adaptation on casing 1.

In the structure, can be convenient for the location installation of retainer 32 through spacing mouthful 62 and spacing cooperation, and stability when can improving the displacement of retainer 32 has thereby improved the utility model discloses an assembly efficiency has improved the utility model discloses a reliability.

In this embodiment, the opening of the accommodating groove 11 facing the housing cover 2 is provided with a baffle plate disposed up and down relative to one end of the stopper 322 close to the accommodating groove 11.

In the above structure, the stopper 32 is more limited by the accommodating groove 11 by the baffle, so that the displacement stability of the stopper 32 is further improved.

In this embodiment, the position department corresponding with divide-shut brake indicator 5 on casing 1 is equipped with instruction mouth 13, be equipped with locating lever 14 in the casing 1, divide-shut brake indicator 5 cover is located on locating lever 14, and sets up with the linkage of trip 411, trip 411 top is equipped with drive block 4111 towards one side of cap 2, set up bayonet socket 51 with drive block 4111 complex on the divide-shut brake indicator 5 in the relative drive block 4111 displacement direction.

In the above structure, during switching on and off, the bracket 41 is matched with the bayonet 51 on the switching-on and switching-off indicator 5 through the driving block 4111 on the hook 411 to control the rotation of the switching-on and switching-off indicator 5, so that a user can observe and confirm the current state of the switch through the indicating port 13. Adopt above-mentioned structure, the installation of divide-shut brake indicator 5 of can being convenient for, and linkage nature is high, thereby improved the utility model discloses the convenience and the reliability of assembly.

In this embodiment, the side wall of the movable contact 42 is provided with an engaging groove 421 engaging with the inner wall of the mounting groove 45, a cushion block 412 is disposed below the engaging groove 421 facing the housing cover 2 in the mounting groove 45, and a top surface of the cushion block 412 is an inclined surface inclined downward toward the housing 1.

Adopt above-mentioned structure, the installation of moving contact 42 can be convenient for, and the stability of moving contact 42 can be improved, thereby improved the utility model discloses a reliability.

In this embodiment, one side of the housing cover 2 facing the housing 1 is provided with a pressing plate 22, a limiting plate 23, a positioning plate 24 and an inserting plate 25, which are integrally disposed with the housing cover 2 and are respectively used for pressing the stop member 32, the connecting rod, the stop block 322 and the second return spring 33, and the inserting plate 25 is located on one side of the positioning plate 24 facing the housing 1.

Adopt above-mentioned structure, stability when can improve the fastness and the displacement of retainer 32, connecting rod, dog 322, the installation of second reset spring 33, thereby improved the utility model discloses a reliability.

In this embodiment, the two ends of the handle 31 are both provided with a connecting shaft 312 pivotally connected to the housing 1 and the housing cover 2, and the linking protrusion 311 and the handle 31 are integrally disposed.

Adopt above-mentioned structure, the installation of handle 31 of can being convenient for, its setting that can reduce spare part has improved the utility model discloses the convenience of assembly.

In this embodiment, a positioning column 325 for sleeving the second return spring 33 is disposed at one end of the stopper 32 located in the accommodating groove 11.

In the above structure, the positioning column 325 is convenient for the installation of the second return spring 33, and can limit the installation, thereby improving the stability of the second return spring 33.

In this embodiment, a limiting post 26 integrally disposed on one side of the housing cover 2 facing the housing 1 and corresponding to the positioning rod 14 is disposed, and a cross-section of the limiting post 26 is cross-shaped.

Adopt above-mentioned structure, can improve the fastness of divide-shut brake indicator 5, thereby improved the utility model discloses a reliability.

In this embodiment, the bottom of the sliding seat 6 is provided with a limiting opening 62 adapted to the energy storage spring 61, and the moving contact 42 is provided with a protrusion 422 matched with the energy storage spring 61.

Adopt above-mentioned structure, can improve energy storage spring 61's stability, and can be convenient for energy storage spring 61's installation, thereby improved the utility model discloses a reliability and convenience.

In this embodiment, the support 41 is provided with a limiting rod 413 matched with the first return spring 44, the housing 1 is provided with a fixing plate 15 abutting against the first return spring 44, and the fixing plate 15 is provided with a limiting groove 151 matched with the first return spring 44.

With the above structure, the installation of first reset spring 44 can be convenient for, and first reset spring 44's stability can be improved, thereby has improved the utility model discloses a reliability.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations of the above assumption should also be regarded as the protection scope of the present invention.

Claims (10)

1. The utility model provides an isolating switch, includes casing, cap, operating device, contact system, divide-shut brake indicator, the contact system include the support, with the moving contact of support linkage setting, with moving contact matched with static contact, with support matched with first reset spring, its characterized in that: the support is provided with an installation groove, the moving contact is clamped in the installation groove, the support is provided with a sliding seat which is matched with the installation groove to slide, an energy storage spring is arranged between the sliding seat and the moving contact, the operating mechanism comprises a handle, a stop piece and a second return spring, the handle is provided with a linkage lug for driving the sliding seat to drive the support to move, the stop piece is horizontally arranged between the handle and the sliding seat, a containing groove is arranged on the right side of the shell above the bracket, the second return spring is positioned in the containing groove and is propped against one end of the retainer, the stop piece is provided with a limit block which blocks the closing movement track of the linkage lug, the bracket is provided with a clamping hook the top of which is bent towards one side of the accommodating groove, the stop piece is provided with a stop block on the downward displacement track of the clamping hook, and the stop piece can drive the stop block to move towards the accommodating groove through the cooperation of the linkage lug and the stop block.

2. A disconnector according to claim 1, characterized in that: the handle is connected with the sliding seat through a U-shaped connecting rod, one end of the U-shaped connecting rod is connected to the linkage lug, and the other end of the U-shaped connecting rod is connected to the upper end of the sliding seat.

3. A disconnector according to claim 2, characterized in that: one end of the stop piece is located in the containing groove, the other end of the stop piece extends to the left side of the support and abuts against the inner wall of the shell to form a reset section, and a reset block which blocks the opening motion trail of the linkage lug is arranged on the reset section.

4. A disconnector according to claim 3, characterized in that: the reset section is provided with a limiting opening with an opened end part towards one side of the shell, and the shell is provided with a limiting strip matched with the limiting opening.

5. A disconnector according to claim 4, characterized in that: and a baffle plate which is arranged up and down relative to one end of the stop block close to the accommodating groove is arranged at the opening of the accommodating groove on one side of the shell cover.

6. A disconnector according to claim 2, characterized in that: the device comprises a shell and is characterized in that an indicating port is arranged at a position corresponding to a switching-off and switching-on indicating piece on the shell, a positioning rod is arranged in the shell, the switching-off and switching-on indicating piece is sleeved on the positioning rod and is in linkage with a clamping hook, a driving block is arranged at the top end of the clamping hook towards one side of the shell cover, and a bayonet matched with the driving block is arranged on the switching-off and switching-on indicating piece in the displacement direction relative to the driving block.

7. A disconnector according to claim 1, characterized in that: the side wall of the moving contact is provided with a clamping groove clamped with the inner wall of the mounting groove, a cushion block is arranged below the clamping groove on one side of the shell cover in the mounting groove, and the top surface of the cushion block is an inclined surface inclined downwards towards the shell.

8. A disconnector according to claim 5, characterized in that: one side of the shell cover towards the shell is provided with a pressing plate, a limiting plate, a positioning plate and a plug board which are integrally arranged with the shell cover and are respectively used for pressing a stop piece, a connecting rod, a stop block and a second reset spring, and the plug board is positioned on one side of the positioning plate towards the shell.

9. A disconnector according to claim 1, characterized in that: the two ends of the handle are respectively provided with a connecting shaft which is pivoted and matched with the shell and the shell cover, and the linkage lug and the handle are integrally arranged.

10. A disconnector according to claim 5, characterized in that: and one end of the retainer, which is positioned in the accommodating groove, is provided with a positioning column for sleeving the second return spring.

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