CN117059427A - Electrical isolation switch capable of avoiding incomplete contact of gate - Google Patents

Abstract

The invention relates to the field of isolating switches and discloses an electric isolating switch capable of avoiding incomplete contact of a gate.

Description

Electrical isolation switch capable of avoiding incomplete contact of gate

Technical Field

The invention relates to the field of isolating switches, in particular to an electric appliance isolating switch capable of avoiding incomplete contact of a gate.

Background

The isolating switch is a common protection element in a high-voltage electrical appliance circuit, has a simple working principle and structure, directly and obviously cuts off the circuit by a manual or electric method, is convenient for local maintenance and debugging of the circuit for workers, has various types and different application scenes;

because the force that needs when isolator opens and shuts is great, consequently when some non-professionals operate (private place, individual operation place use often do not have professional to operate), often can appear isolator opening or close the condition in place, the switch has small area contact, and the circuit is not disconnected completely like this when opening the floodgate, has the potential safety hazard, and when closing, the gate department resistance grow, has abnormal current, influences normal use, and average temperature also can be far above normal value), therefore we propose an electric appliance isolator who avoids the gate to incompletely contact to solve the problem.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide the electric isolating switch which can avoid incomplete contact of the gate, the V-shaped closing push plate and the V-shaped opening push plate are arranged on the switch shaft, so that the switch shaft is driven by the handle to move in the closing process, the connecting contact piece is close to the wiring contact piece until the connecting contact piece and the connecting contact piece are contacted, the extrusion rod extrudes the opening push plate in the process, the opening push plate and the closing push plate slide downwards together, the inclination angle of the connecting slide block compresses the pressure spring, the opening push plate and the closing push plate move to the other side of the extrusion rod along with the movement of the switch shaft, if the closing is not in place, the pressure spring pushes the closing push plate to arch again through the connecting slide block, the extrusion rod is propped against the closing push plate, the opening push plate and the opening push plate are pushed leftwards along the inclined plane, the switch shaft also follows the movement to enable the connecting contact piece and the wiring contact piece to be tightly pressed together, and the situation that the opening is not in place is avoided, the wiring contact piece and the connecting contact piece are virtually connected when the opening is opened, so that the safety and the service life of the isolating switch are improved.

2. Technical proposal

In order to solve the problems, the invention adopts the following technical scheme.

An electric isolating switch for preventing gate from incomplete contact comprises a top shell and a bottom shell, wherein wiring contact pieces are arranged at the upper side and the lower side of the top shell, a switch shaft is connected in the top shell in a sliding manner, connecting contact pieces are arranged at the upper side and the lower side of the switch shaft, a handle for controlling the switch shaft is arranged in front of the top shell, a sliding opening is arranged on the front surface of the top shell, the handle covers the front of the sliding opening, a control sliding groove is arranged on the back surface of the handle, the distances from the two ends of the control sliding groove to the center of the handle are different, a control shaft penetrating through the sliding opening is arranged on the front surface of the switch shaft, the other end of the control shaft extends into the handle, a pressure mechanism is arranged in the top shell and comprises a mounting groove arranged at the upper side and the lower side of the switch shaft, pressure springs are fixedly connected at the two sides of the inside of the mounting groove, a connecting sliding block is fixedly connected with the other side of the pressure springs, and the connecting sliding block is in the mounting groove, the other ends of the two connecting sliding blocks are rotationally connected with a closing push plate and an opening push plate in a distributed and rotating way, the closing push plate and the opening push plate are connected together in a V shape, the pressure mechanism also comprises an extension table fixedly connected to the inner side of the top shell, the outer side of the extension table is provided with an extrusion rod which is propped against the surface of the opening push plate, the V-shaped closing push plate and the V-shaped opening push plate are arranged on the switch shaft, the switch shaft is driven to move by using a handle in the closing process, the connecting contact piece is close to the wiring contact piece until the connecting contact piece is contacted, the extrusion rod extrudes the opening push plate, the opening push plate and the closing push plate slide downwards together, the inclination angle of the connecting sliding block is reduced, the connecting sliding block compresses a pressure spring, the opening push plate and the closing push plate move to the other side of the extrusion rod along with the movement of the switch shaft, if the closing is not in place in the process, the pressure spring pushes the closing push plate to arch again through the connecting sliding block, so that the extrusion rod is propped against the closing push plate, the push plate and the push plate are pushed leftwards along the inclined plane, the switch shaft also follows the movement to enable the connecting contact piece and the wiring contact piece to be tightly pressed together, and when the disconnecting switch is opened, the situation that the disconnecting switch is opened or closed is not in place is avoided, the wiring contact piece and the connecting contact piece are in virtual connection (small-area contact exists, when the disconnecting switch is opened, a circuit is not completely disconnected, potential safety hazards exist, when the disconnecting switch is closed, the resistance of the gate is increased, normal use is influenced, and the average temperature is far higher than a normal value), so that the use safety and stability of the disconnecting switch are improved, and the service life is prolonged.

Further, the handle and the top shell diameter are provided with two metal elastic pieces, and the metal elastic pieces are distributed in the pointing direction when the handle is in an open state and a closed state, so that when the handle is rotated to the open state or the closed state, the metal elastic pieces can be stirred to make sounds, and an operator is reminded, so that the handle is more convenient to use.

Further, the open length of the mounting groove is smaller than the whole length of the mounting groove, and the pressure spring and the connecting sliding block are limited in the mounting groove so as to avoid derailment.

Further, the left-right span of the push plate and the push plate under the V-shaped state is larger than the distance from the wiring contact piece to the switch shaft, so that the push plate and the push plate can push the connecting contact piece to a specified position when the switch is opened or closed, the connecting contact piece and the wiring contact piece are completely separated when the switch is opened, and the connecting contact piece and the wiring contact piece are comprehensively attached when the switch is closed, so that the switch operates more stably.

Further, the storage groove is formed in the surface of the extension table, the pushing spring is arranged in the storage groove, one end of the extrusion rod is inserted into the storage groove and connected with the pushing spring, the force required by compression of the pushing spring is larger than the force required by compression of the pressure spring, so that when any part of the pressure spring, the connecting sliding block, the closing pushing plate and the opening pushing plate encounters a clamping shell, the closing pushing plate and the opening pushing plate can push the extrusion rod to enter the pushing spring in the moving process of the switch shaft, the pushing rod pushes the pushing plate and the inclined plane of the opening pushing plate under the influence of the pushing spring, the purpose of pushing the switch shaft is further achieved, the situation that the clamping shell occurs during use is avoided, and the switch is more stable in use.

Furthermore, the pressure spring and the pushing spring are made of insulating materials, so that the influence of the pressure spring and the pushing spring on current when the switch is electrified is avoided.

Further, the inside of closing the push pedal is provided with adjustment mechanism, adjustment mechanism includes the interior axle and the outer axle that play the linking effect between closing the push pedal and opening the push pedal, interior axle and closing push pedal fixed connection, the outer axle rotates with opening the push pedal to be connected, and the junction sets up outer torsional spring, the outer axle cup joints in the outside of interior axle, and both junctions set up interior torsional spring, the tensile required power of interior torsional spring is less than the tensile required power of outer torsional spring, the centre bore has been seted up in the axle center department of interior axle, the adjustment tank with centre bore intercommunication is seted up in the outside of interior axle, the draw-in groove that corresponds with the adjustment tank has been seted up to the inboard of outer axle, the inside fixedly connected with of adjustment tank pulls the spring, the other end fixedly connected with clamping lever of pulling the spring, the surface of adjustment tank has inlayed the air cushion, the one end that is close to the clamping tank communicates with the centre bore, through setting up two rotation points between closing the push pedal and opening the push pedal, so when closing the push pedal and interior axle is fixed, the push pedal passes through outer torsional spring drive around rotation, interior torsional spring is stretched, the required power of interior torsional spring and opening push pedal deflection, the process of making the closing is more convenient, the process of closing is further reduced, the condition that does not appear to the position, the card when opening the push pedal and the clamping lever is pushed down, the axial when the inner axle is pushed out, the high-pressure when the air cushion is pushed, the external air cushion is pushed to the high-pressure when the internal-pressure is required, the air cushion is pushed, and the internal-pressure when the external air cushion is pushed, and the external air is pushed, and the high-pressure is required to be pushed, and when the internal-pressure and when the air is pushed.

Further, the air hole has been seted up to the one end that the air cushion is close to the centre bore, so when the air cushion surface slides from left to right at the extrusion pole, the air in the air cushion is discharged from the air hole in, can not produce the influence to the card pole, only the extrusion pole slides from right to left, the card pole just has to be triggered, so lets the switching time of closing the push pedal and opening the rotation point between the push pedal more accurate.

Further, the width of the extrusion rod is the same as that of the air cushion, so that the condition that air leakage occurs when the extrusion rod pushes the air cushion is avoided.

Further, the force required by compression of the pressure spring and the pushing spring is not more than one third of the force required by stretching of the inner torsion spring and the outer torsion spring, so that most of the force generated when the push plate is closed and the push plate is opened and arched (the force for pushing the switch shaft) comes from the inner torsion spring and the outer torsion spring, the action of the pressure spring and the pushing spring in the working process is reduced, and the force difference required by stretching of the inner torsion spring and the outer torsion spring is highlighted.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

1. according to the scheme, the V-shaped closing push plate and the V-shaped opening push plate are arranged on the switch shaft, the switch shaft is driven to move by the handle in the closing process, the connecting contact piece is close to the wiring contact piece until the connecting contact piece and the connecting contact piece are contacted, the extrusion rod extrudes the opening push plate, the opening push plate and the closing push plate slide downwards together, the inclination angle of the connecting slide block compresses the pressure spring, the opening push plate and the closing push plate move to the other side of the extrusion rod along with the movement of the switch shaft, if the closing is not in place in the process, the pressure spring pushes the closing push plate to arch again through the connecting slide block, the extrusion rod is pushed to the closing push plate and the opening push plate leftwards along an inclined plane, the switch shaft also follows the movement to enable the connecting contact piece and the wiring contact piece to be tightly pressed together, and when the switch is opened, the situation that the opening or closing is not in place is avoided, the wiring contact piece and the connecting contact piece are connected (small-area contact is avoided, a circuit is not completely disconnected when the switch is opened, potential safety hazards exist, resistance at the closing position is increased, normal use is affected, and the average temperature is also can be far higher than an isolation value), and the service life is prolonged.

2. The handle and the top shell diameter are provided with two metal elastic pieces, and the metal elastic pieces are distributed in the pointing direction when the handle is in an opening state and a closing state, so that when the handle rotates to the opening state or the closing state, the metal elastic pieces can be stirred to make sounds, and an operator is reminded, so that the handle is more convenient to use.

3. The left-right span of the opening push plate and the closing push plate under the V-shaped state is larger than the distance from the wiring contact piece to the switch shaft, so that the connection contact piece can be pushed to a specified position by the closing push plate and the opening push plate when opening or closing a switch, the connection contact piece and the wiring contact piece are completely separated when opening the switch, and the connection contact piece and the wiring contact piece are comprehensively attached when closing the switch, so that the switch operates more stably.

4. The surface of extension platform has been seted up and has been accomodate the groove, accomodate the internally mounted in groove and has been accomodate the spring, the extrusion pole one end inserts and accomodates inslot and be connected with the spring that bulldozes, the required power of spring compression is greater than the required power of pressure spring compression, so when pressure spring, the connection slider, close the push pedal and open the push pedal arbitrary part and meet the card shell, the switch shaft removes the in-process, close the push pedal and open the push pedal and can bulldoze the extrusion pole and get into the spring that bulldozes, the inclined plane of extrusion pole top pressfitting push pedal and open the push pedal under the influence of bulldoze spring, accomplish the purpose of further propelling movement switch shaft, the condition of card shell appears when avoiding the use like this, it is more stable to make the switch use.

5. Through setting up two rotation points between closing the push pedal and opening the push pedal, so when closing, close the push pedal and interior axle is fixed, it is fixed with the push pedal through outer torsional spring drive outer axle around interior axle rotation, interior torsional spring is stretched to close the push pedal and open the required power of push pedal deflection at this time less, the process of making a floodgate is more convenient, further reduce the condition that the closing is not in place in appearance, and when opening the floodgate, the air in the air cushion gets into the centre bore and promotes the clamping lever to the draw-in groove, the clamping lever is fixed with interior axle and outer axle together, so close the push pedal and open the push pedal and deflect when, it is rotated around the outer axle to open the push pedal, the internal stretching of outer torsional spring, required power is big, avoid receiving external interference factor to lead to the switching shaft to appear removing like this, the communicating effect of switch.

6. The air hole has been seted up to the one end that the air cushion is close to the centre bore, so when the air cushion surface slides from left to right at the extrusion pole, the air in the air cushion is discharged from the air hole in, can not exert an influence to the card pole, only the extrusion pole slides from right to left, the card pole just has to be triggered, so lets the switching time of closing the push pedal and opening the rotation point between the push pedal more accurate.

7. The force required by compression of the pressure spring and the pushing spring is not more than one third of the force required by stretching of the inner torsion spring and the outer torsion spring, so that most of the force generated when the push plate is closed and the push plate is opened and arched (the force for pushing the switch shaft) comes from the inner torsion spring and the outer torsion spring, the action of the pressure spring and the pushing spring in the working process is reduced, and the difference of the force required by stretching of the inner torsion spring and the outer torsion spring is highlighted.

Drawings

FIG. 1 is an external display view of a switch of the present invention;

FIG. 2 is a front view showing the switch of the present invention after disassembly;

FIG. 3 is a rear view showing the switch of the present invention with the switch broken away;

fig. 4 is a bottom case internal display view of the present invention;

FIG. 5 is an enlarged view of a portion of FIG. 4 in accordance with the present invention;

FIG. 6 is a complete representation of the pressure mechanism of the present invention;

fig. 7 is an explanatory view of a switching shaft closing process of the present invention;

fig. 8 is a diagram showing a switching shaft closing state of the present invention;

FIG. 9 is a view showing the junction of the push-push plate and push-push plate;

FIG. 10 is a diagram showing the rotational state of the adjusting mechanism according to the present invention;

fig. 11 is an external rotation state diagram of the adjusting mechanism of the present invention.

The reference numerals in the figures illustrate:

1. a top shell; 2. a bottom case; 3. a wiring contact piece; 4. a switching shaft; 5. a contact piece is connected; 6. a sliding port; 7. a handle; 8. controlling the chute; 9. a control shaft; 10. a pressure mechanism; 101. a mounting groove; 102. a pressure spring; 103. the connecting slide block; 104. a pushing plate; 105. a push plate is opened; 106. an extension table; 107. an extrusion rod; 108. a storage groove; 109. a pushing spring; 11. an adjusting mechanism; 111. an inner shaft; 112. an outer shaft; 113. a central bore; 114. an adjustment tank; 115. a clamping groove; 116. pulling the spring; 117. a clamping rod; 118. and (5) an air cushion.

Detailed Description

The technical scheme of the embodiment is clearly and completely described by combining the disclosed drawings, so that the purposes, technical scheme and beneficial effects of the embodiment of the disclosure are more clear. It will be apparent that the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments, which can be made by one of ordinary skill in the art without the need for inventive faculty, are within the scope of the present disclosure, based on the described embodiments of the present disclosure.

Unless otherwise defined, technical or scientific terms used in this disclosure should be given the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure pertains. The terms "first," "second," and the like, as used in this disclosure, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" and the like means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof without precluding other elements or items. "upper", "lower", "inner", "outer", etc. are used merely to denote relative positional relationships, which may also change accordingly when the absolute position of the object to be described changes.

Examples:

referring to fig. 1 to 8, an electrical isolation switch for preventing a gate from being in incomplete contact comprises a top shell 1 and a bottom shell 2, wherein wiring contact pieces 3 are arranged on the upper side and the lower side of the top shell 1, a switch shaft 4 is connected in a sliding manner in the top shell 1, connecting contact pieces 5 are arranged on the upper side and the lower side of the switch shaft 4, a handle 7 for controlling the switch shaft 4 is arranged in front of the top shell 1, a sliding opening 6 is formed in the front of the top shell 1, the handle 7 covers the front of the sliding opening 6, a control sliding groove 8 is formed in the back of the handle 7, the distances from the two ends of the control sliding groove 8 to the center of the handle 7 are different, a control shaft 9 penetrating through the sliding opening 6 is arranged on the front of the switch shaft 4, the other end of the control shaft 9 extends into the handle 7, a pressure mechanism 10 is arranged in the top shell 1, the pressure mechanism 10 comprises a mounting groove 101 formed in the upper side and the lower side of the switch shaft 4, pressure springs 102 are fixedly connected on the two sides in the mounting groove 101, a connecting sliding block 103 is fixedly connected to the other side of the pressure spring 102, the connecting sliding block 103 is connected in the mounting groove 103, two connecting blocks are connected with a pressing plate 105 and a pressing table 105 is arranged on the inner side of the pressing plate 105, and the pressing plate 105 is connected with the pressing table 105 and the pressing table 107 extends together, and the pressing table 105 is arranged on the outer side of the pressing table 106;

when the switch is closed, the handle 7 is rotated, the handle 7 pushes the control shaft 9 leftwards through the control chute 8, the control shaft 9 drives the switch shaft 4 to leftwards, the connecting contact piece 5 is close to the wiring contact piece 3, as shown in fig. 7, the extrusion rod 107 extrudes the switch-off push plate 105 in the process, the switch-off push plate 105 drives the switch-off push plate 104 to downwards deflect, the connecting slide block 103 compresses the pressure spring 102 to slide to two sides, the inclination angles of the switch-off push plate 105 and the switch-off push plate are reduced until the extrusion rod 107 slides from the highest point of the switch-off push plate 104 and the switch-off push plate 105 to the upper side of the switch shaft 105, if the switch shaft 4 continues to move, the connecting contact piece 5 is driven to contact the wiring contact piece 3, the circuit is connected, if closing is stopped at the moment, the pressure spring 102 pushes the connecting slide block 103 to reset, the switch-off push plate 104 and the switch-off push plate 105 are pushed to rise, as shown in fig. 8, under the guidance of the extrusion rod 107, the switch-off push plate 104 and the switch shaft 4 is driven to go through the travel under the process of opening of closing the switch-off push plate 105.

The diameters of the handle 7 and the top shell 1 are provided with two metal elastic pieces, and the metal elastic pieces are distributed in the pointing direction when the handle 7 is in an opening state and a closing state, so that when the handle 7 rotates to the opening state or the closing state, the metal elastic pieces can be stirred to make sounds to remind an operator, and the use is more convenient; the opening length of the mounting groove 101 is smaller than the complete length of the mounting groove 101, so that the pressure spring 102 and the connecting sliding block 103 are limited in the mounting groove 101, and derailment is avoided; the left-right span of the opening push plate 105 and the closing push plate 104 in the V-shaped state is larger than the distance from the wiring contact piece 3 to the switch shaft 4, so that the connection contact piece 5 can be pushed to a specified position when the opening push plate 104 and the opening push plate 105 are opened or closed, the connection contact piece 5 and the wiring contact piece 3 are completely separated when the opening switch is opened, the connection contact piece 5 and the wiring contact piece 3 are comprehensively attached when the closing switch is closed, and the switch operation is more stable.

As shown in fig. 9, a storage groove 108 is formed on the surface of the extension table 106, a pushing spring 109 is mounted in the storage groove 108, one end of a pressing rod 107 is inserted into the storage groove 108 and connected with the pushing spring 109, and the force required for compressing the pushing spring 109 is larger than the force required for compressing the pressure spring 102, so that when any part of the pressure spring 102, the connecting sliding block 103, the closing pushing plate 104 and the opening pushing plate 105 encounters a clamping shell, in the moving process of the switch shaft 4, the closing pushing plate 104 and the opening pushing plate 105 can push the pressing rod 107 to enter the pushing spring 109, and the pressing rod 107 pushes the inclined surfaces of the closing pushing plate 104 and the opening pushing plate 105 under the influence of the pushing spring 109, so that the purpose of pushing the switch shaft 4 is further achieved; the pressure spring 102 and the pushing spring 109 are made of insulating materials, so that the pressure spring 102 and the pushing spring 109 can not influence the current when the switch is electrified.

Referring to fig. 9 to 11, an adjusting mechanism 11 is disposed in the push plate 104, the adjusting mechanism 11 includes an inner shaft 111 and an outer shaft 112 which are connected between the push plate 104 and the push plate 105, the inner shaft 111 is fixedly connected with the push plate 104, the outer shaft 112 is rotatably connected with the push plate 105, an outer torsion spring is disposed at the connection position, the outer shaft 112 is sleeved on the outer side of the inner shaft 111, an inner torsion spring is disposed at the connection position, the force required by stretching the inner torsion spring is smaller than the force required by stretching the outer torsion spring, a central hole 113 is disposed at the axis center of the inner shaft 111, an adjusting groove 114 communicated with the central hole 113 is disposed at the outer side of the inner shaft 111, a clamping groove 115 corresponding to the adjusting groove 114 is disposed at the inner side of the outer shaft 112, a pulling spring 116 is fixedly connected at the inner side of the adjusting groove 114, a clamping rod 117 is fixedly connected at the other end of the pulling spring 116, and an air cushion 118 is embedded on the surface of the adjusting groove 114, the air cushion 118 is close to one end of the clamping groove 115 and is communicated with the central hole 113, two rotation points are arranged between the closing push plate 104 and the opening push plate 105, so that when the closing push plate 104 and the inner shaft 111 are fixed, the opening push plate 105 drives the outer shaft 112 to rotate around the inner shaft 111 through the outer torsion spring, the inner torsion spring is stretched, the force required by deflection of the closing push plate 104 and the opening push plate 105 is smaller, the closing process is more convenient, the situation that the closing is not in place is further reduced, the pressing rod 107 presses the air cushion 118 when the opening is carried out, air in the air cushion 118 enters the central hole 113 to push the clamping rod 117 into the clamping groove 115, the clamping rod 117 fixes the inner shaft 111 and the outer shaft 112 together, when the closing push plate 104 and the opening push plate 105 deflect, the opening push plate 105 rotates around the outer shaft 112, the required force is large, and the phenomenon that the switch shaft 4 moves due to external interference factors is avoided.

The air hole is opened to the one end that the air cushion 118 is close to the centre bore 113, so when the squeeze lever 107 slides from left to right at the air cushion 118 surface, the air in the air cushion 118 is discharged from the air hole, can not exert an influence on the clamping rod 117, and only when the squeeze lever 107 slides from right to left, the clamping rod 117 is triggered, so that the conversion time of the rotation point between the push closing plate 104 and the push opening plate 105 is more accurate.

The width of the extrusion rod 107 is the same as that of the air cushion 118, so that the condition of air leakage when the extrusion rod 107 pushes the air cushion 118 is avoided; the force required by compression of the pressure spring 102 and the pushing spring 109 is not more than one third of the force required by stretching of the inner torsion spring and the outer torsion spring, so that the force when the push plate 104 and the push plate 105 are closed and arched (the force for pushing the switch shaft 4) is mostly from the inner torsion spring and the outer torsion spring, the action of the pressure spring 102 and the pushing spring 109 in the working process is reduced, and the force difference required by stretching of the inner torsion spring and the outer torsion spring is highlighted.

The above description is only of the preferred embodiments of the present invention; the scope of the invention is not limited in this respect. Any person skilled in the art, within the technical scope of the present disclosure, may apply to the present invention, and the technical solution and the improvement thereof are all covered by the protection scope of the present invention.

Claims (10)

1. The utility model provides an avoid electrical apparatus isolator of gate incomplete contact, includes top shell (1) and drain pan (2), wiring contact (3) are installed to the upper and lower both sides of top shell (1), and the inside sliding connection of top shell (1) has switch shaft (4), link contact (5) are installed to the upper and lower both sides of switch shaft (4), handle (7) of control switch shaft (4) are installed in the place ahead of top shell (1), its characterized in that: the utility model discloses a top shell, which is characterized in that a sliding opening (6) is formed in the front of the top shell (1), a handle (7) is covered in front of the sliding opening (6), a control sliding groove (8) is formed in the back of the handle (7), distances from two ends of the control sliding groove (8) to the center of the handle (7) are different, a control shaft (9) penetrating through the sliding opening (6) is assembled on the front of a switch shaft (4), the other end of the control shaft (9) extends into the handle (7), a pressure mechanism (10) is arranged in the top shell (1), the pressure mechanism (10) comprises a mounting groove (101) formed in the upper side and the lower side of the switch shaft (4), pressure springs (102) are fixedly connected to two sides in the mounting groove (101), connecting sliding blocks (103) are fixedly connected to the other sides of the pressure springs (102), the connecting sliding blocks (103) are slidably connected in the mounting groove (101), the other ends of the two connecting blocks (103) are rotationally connected with a pushing plate (104) and a pushing plate (105), the pushing plate (104) and the pushing plate (105) are rotationally connected with the pushing plate (104) to the inner side of the pushing plate (105) and the pressure mechanism (10) in a shape which is also fixedly connected with the top shell (106), the outer side of the extension table (106) is provided with an extrusion rod (107) which is pressed on the surface of the push plate (105).

2. An electrical disconnector for avoiding incomplete contact of a shutter as claimed in claim 1, characterized in that: the diameter of the handle (7) and the diameter of the top shell (1) are provided with two metal elastic pieces, and the metal elastic pieces are distributed in the pointing directions of the handle (7) in an opening state and a closing state.

3. An electrical disconnector for avoiding incomplete contact of a shutter as claimed in claim 1, characterized in that: the opening length of the mounting groove (101) is smaller than the whole length of the mounting groove (101).

4. An electrical disconnector for avoiding incomplete contact of a shutter as claimed in claim 1, characterized in that: the left-right span of the opening pushing plate (105) and the closing pushing plate (104) in the V-shaped state is larger than the distance from the wiring contact piece (3) to the switch shaft (4).

5. An electrical disconnector for avoiding incomplete contact of a shutter as claimed in claim 1, characterized in that: the surface of extension platform (106) has seted up and has accomodate groove (108), the internally mounted of accomodating groove (108) has bulldozes spring (109), extrusion pole (107) one end inserts and accomodates in groove (108) and be connected with bulldozes spring (109), the required power of bulldozes spring (109) compression is greater than the required power of compression of pressure spring (102).

6. An electrical disconnector for avoiding incomplete contact of a shutter as defined in claim 5, characterized in that: the pressure spring (102) and the pushing spring (109) are made of insulating materials.

7. An electrical disconnector for avoiding incomplete contact of a shutter as defined in claim 5, characterized in that: the inside of closing push pedal (104) is provided with adjustment mechanism (11), adjustment mechanism (11) include in closing interior axle (111) and outer axle (112) of push pedal (105) play the connection effect between push pedal (104) and opening, interior axle (111) and close push pedal (104) fixed connection, outer axle (112) rotate with opening push pedal (105) and be connected, and the junction sets up outer torsional spring, and outer axle (112) cup joints in the outside of interior axle (111), and in the junction sets up interior torsional spring, the tensile required power of interior torsional spring is less than the tensile required power of outer torsional spring, centre bore (113) have been seted up in the axle center department of interior axle (111), adjustment groove (114) with centre bore (113) intercommunication have been seted up in the outside of interior axle (111), draw-in groove (115) with adjustment groove (114) corresponding are seted up to the inboard of adjustment groove (114), the inside fixedly connected with of adjustment groove (114) pulls spring (116), the other end fixedly connected with kelly (117), the surface of adjustment groove (114) is inlayed in the outside of interior torsional spring (118), be close to air cushion (118).

8. An electrical disconnector for avoiding incomplete contact of a shutter as claimed in claim 7, characterized in that: an air hole is formed in one end, close to the center hole (113), of the air cushion (118).

9. An electrical disconnector for avoiding incomplete contact of a shutter as claimed in claim 7, characterized in that: the width of the extrusion rod (107) is the same as the width of the air cushion (118).

10. An electrical disconnector for avoiding incomplete contact of a shutter as claimed in claim 7, characterized in that: the force required for compression of the pressure spring (102) and the pushing spring (109) is not more than one third of the force required for stretching of the inner torsion spring and the outer torsion spring.