CN208240517U - Automatic transfer switching electric appliance - Google Patents

Abstract

A kind of automatic transfer switching electric appliance, including pedestal and the conversion equipment being arranged in pedestal, contact mechanism and traction mechanism, contact mechanism includes two static contacts being oppositely arranged and the moving contact being rotatably provided between two static contacts, moving contact includes shaft, elastic parts with the movable touch knife of static contact cooperation and with movable touch knife cooperation, the elastic parts cavity for accommodating elastic parts is equipped at the middle part of shaft, the top of shaft is connect by traction mechanism with conversion equipment, pedestal is equipped with the supporter at hemispherical projections, the rotation slot cooperated with supporter and the centre bore being connected to elastic parts cavity are equipped in the bottom center of shaft, pass through the cooperation of rotation slot and supporter, reliable limit effect can not only be played for the movement of shaft, and the bottom end of shaft and pedestal interval are set, reduce the bottom end of shaft with Contact area, reduction frictional force between pedestal, prevent excessive wear from shaft being made to fail, improve the service life of product.

Description

Automatic transfer switching electric appliance

Technical field

The utility model relates to Low Voltage Electrical Apparatus, more particularly to a kind of automatic transfer switching electric appliance.

Background technique

Automatic transfer switching electric appliance is the switch electricity for switching load circuit between common side power supply and prepped side power supply Device, current many important events are all powered using automatic transfer switching electric appliance, and automatic transfer switching electric appliance is powered continuous Property and reliability have particularly significant, and the reliability of automatic transfer switching electric appliance is particularly important especially in emergency power supply system, but Existing Automatic-turning on-off electric-appliance structure is complicated, components are more, does not only result in that volume is too fat to move, assembly is cumbersome, and reliability Also poor.

Summary of the invention

The purpose of the utility model is to overcome the defect of the prior art, provide a kind of structure it is simple, it is high reliablity from Dynamic transfer switching equipment.

To achieve the above object, the utility model adopts the technical scheme that

A kind of automatic transfer switching electric appliance, including pedestal 2 and the switching mechanism being arranged in pedestal 2 100, contact mechanism 200 and traction mechanism 300, contact mechanism 200 includes two static contacts 210 being oppositely arranged and is rotatably provided in two stationary contacts Moving contact 220 between first 210, moving contact 220 include shaft 222, the movable touch knife 224 cooperated with static contact 210 and with it is dynamic The elastic parts 225 that contact knife 224 cooperates is equipped with the elastic parts cavity for accommodating elastic parts 225 at the middle part of shaft 222, turns The top of axis 222 is connect by traction mechanism 300 with switching mechanism 100, and pedestal 2 is equipped with the supporter at hemispherical projections 226, it is connected in the bottom center of shaft 222 equipped with the rotation slot 2260 cooperated with supporter 226 and with elastic parts cavity Centre bore 2250.

Optionally, the elastic parts 225 includes elastic slice bracket 2256, the centre bore that elastic slice bracket 2256 passes through strip 2250 be packed into shafts 222 elastic parts cavity in, set in the two sides that the bottom end of shaft 222 is located at centre bore 2250 there are two Semi-circular groove, semi-circular groove constitute circular rotation slot 2260 together with a part of centre bore 2250.

Optionally, the elastic parts 225 includes spring support 2251, the centre bore that spring support 2251 passes through strip In the elastic parts cavity of the 2250 loading shafts 222 and bottom end of spring support 2251 is located at outside shaft 222, the rotation slot 2260 are arranged in the outside of 2251 bottom of spring support.

Optionally, the middle part of the shaft 222 is equipped with the upper cavity 2231 and lower chamber being connected to elastic parts cavity 2232, movable touch knife 224 and elastic piece 2257 are equipped in upper cavity 2231 and lower chamber 2232, and 2256 sets of elastic slice bracket at two The outside of movable touch knife 224, two elastic pieces 2257 are separately positioned on the outside of elastic slice bracket 2256, and two movable touch knifes 224 are divided It is not against in upper cavity 2231 and lower chamber 2232, the elastic piece 2257 in lower chamber 2232 is arranged at movable touch knife 224 and center Between hole 2250.

Optionally, the middle part of the shaft 222 is equipped with the upper cavity 2231 and lower chamber being connected to elastic parts cavity 2232, movable touch knife 224 is equipped in upper cavity 2231 and lower chamber 2232, the spring support 2251 is at frame shape, two dynamic touchings Knife 224 passes through the inside of spring support 2251, the movable touch knife 224 in the inside of 2251 bottom of spring support and lower chamber 2232 Between be equipped with touch spring 2252, be equipped with the rotation slot that cooperates with supporter 226 in the outside of the bottom of spring support 2251 2260, the top side of spring support 2251 and the movable touch knife 224 in upper cavity 2231 cooperate.

Optionally, the cover board 4 for being equipped in the pedestal 2 and cooperating at the top of shaft 222, cover board 4 are equipped with right with shaft 222 The pilot hole 41 answered is equipped with the guiding axis 227 cooperated with pilot hole 41 at the top of shaft 222, and the top of guiding axis 227 exists It is connect after pilot hole 41 with traction mechanism 300.

Optionally, the contact groove 3 for accommodating contact mechanism 200 is equipped in the pedestal 2, static contact 210 is arranged in contact groove 3 Both ends, the rotary axis groove 31 for accommodating shaft 222 is equipped at the middle part of contact groove 3, movable touch knife 224 stretches out rotary axis groove 31 and two sides Static contact 210 be engaged, contact groove 3 the side of static contact 210 be equipped with arc-extinguishing mechanism 230.

Optionally, including two switching mechanisms 100 being arranged in pedestal 2, two switching mechanisms 100 pass through two tractions Mechanism 300 is connect with two contact mechanisms 200 respectively, and two contact mechanisms 200 are respectively connected to common side power supply and prepped side electricity Source, two switching mechanisms 100 are along the axially symmetric setting of pivot 1, and the transmission mechanism 123 of two switching mechanism 100 is along pivot In two sides, pivot 1 can drive one contact of the combined floodgate of switching mechanism 100 of side when rotating to side for the circumferentially opposed setting of axis 1 Mechanism 200, the switching mechanism 100 of the other side then another contact mechanism 200 of separating brake or are maintained at another contact mechanism 200 Gate-dividing state.

Optionally, the conversion equipment 100 includes bracket 121 and the transmission mechanism 123 being arranged in bracket 121, branch The stored energy mechanism 122 cooperated with transmission mechanism 123 is respectively equipped in frame 121 in the two sides of transmission mechanism 123, in bracket 121 Top side is equipped with the differential attachment 110 with 123 one end fits of transmission mechanism, is equipped in the bottom side of bracket 121 another with transmission mechanism 123 The traction mechanism 300 of one end fits, the differential attachment 110 of two switching mechanism 100 are connect with the same pivot 1, traction mechanism 300 connect with moving contact 220.

Optionally, the differential attachment 110 includes what position-limiting drum 114 and being arranged in was connect in position-limiting drum 114 with pivot 1 Differential part 111, transmission mechanism 123 and differential part 111 cooperate, and differential piece cooperated with position-limiting drum 114 is equipped on differential part 111 116；Differential part 111 is equipped with sliding slot 115, and along the axial direction setting of differential part 111, differential piece 116 is arranged in sliding slot sliding slot 115 It is slidably matched in 115, the guide groove 117 cooperated with differential piece 116, guide groove 117 and differential part is equipped on position-limiting drum 114 111 rotation direction is obliquely installed；The transmission mechanism 123 includes two driving plates 1231 being oppositely arranged, and is connected to Two transmission shafts 1232 and two drive shafts 1233 of two 1231 insides of driving plate, transmission shaft 1232 and drive shaft 1233 are handed over For along the circumferential direction setting of differential part 111, drive shaft 1233 is connect with stored energy mechanism 122, and transmission shaft 1232 passes through position limit arm 1182 Cooperate with differential part 111, differential part 111 is corresponding to be equipped between sliding slot 115 and differential arm 112 and cooperate with transmission shaft 1232 Differential slot 113；Stored energy mechanism 122 includes the energy storage bar 1221 connecting with bracket 121, and is connected to energy storage bar 1221 and drives Guide rod 1222 between moving axis 1233 and the energy-stored spring 1225 in 1222 outside of guide rod is covered, there are two one end of guide rod 1222 is set The leading arm 1224 being oppositely arranged, the inside of two leading arms 1224 are against the two sides of drive shaft 1233, two leading arms respectively 1224 outside and one end of energy-stored spring 1225 offset, and the other end of energy-stored spring 1225 is against the circumference of energy storage bar 1221 On, the other end of guide rod 1222, which is equipped with, covers the swinging chute 1223 cooperated on energy storage bar 1221；The traction mechanism 300 include with The towing plate 310 of the cooperation of transmission mechanism 123, the operation panel 320 being fixedly connected with moving contact 220 and two are respectively hinged at The draw bar 330 of 220 two sides of towing plate 310 and moving contact；The top side of moving contact 220 is equipped with guiding axis 227, guiding axis 227 Top side is equipped with gear member 221, and the middle part of the operation panel 320 is equipped with and 221 meshed gears slot 321 of gear member, towing plate 310 Middle part be equipped with the tow pin hole 314 of evacuation pivot 1, set in the two sides of towing plate 310 there are two draft arm 311, two are led Draw arm 311 to be respectively articulated with two draw bars 330, is formed between the circumferential direction of two draft arms 311 and cooperated with transmission shaft 1232 Traction grooved 313, transmission shaft 1232 when for 122 energy storage of stored energy mechanism along traction grooved 313 slide.

The utility model automatic transfer switching electric appliance can not only be by the cooperation of rotation slot 2260 and supporter 226 Reliable limit effect is played in the movement of shaft 222, and the bottom end of shaft 222 and the interval of pedestal 2 is arranged, and reduces and turns Contact area, reduction frictional force between the bottom end and pedestal 2 of axis 222, prevent excessive wear from shaft 222 being made to fail, improve and produce The service life of product.In addition, being cooperated by the supporter 226 on the bottom of spring support 2251 and pedestal 2, spring support 2251 not only frictional force is smaller between the pedestal of plastics 2, but also the structural strength of spring support 2251 is also higher, antifatigue effect Fruit is more preferable, and shaft 222 is not allowed vulnerable.In addition, the cooperation for passing through limit hole 41 and limit shaft 227 can be the dynamic of shaft 222 Make to provide the effect of guidance and limit, balance the torque at both ends in shaft 222, connects shaft 222 when cooperating with supporter 226 Stress near contacting surface can be distributed, and preventing concentrated wear seriously causes shaft 222 to fail.

Detailed description of the invention

Fig. 1 is the exploded view of the utility model pedestal；

Fig. 2 is the cooperation schematic diagram of the utility model conversion equipment and pivot；

Fig. 3 is schematic diagram of the utility model conversion equipment by traction mechanism and contact mechanism cooperation；

Fig. 4 is the schematic diagram of the utility model pivoted position；

Fig. 5 is the explosive view of the utility model conversion equipment；

Fig. 6 is exploded view when the utility model conversion equipment is located at closing position；

Fig. 7 is exploded view when the utility model conversion equipment is located at open position；

Fig. 8 is the structural schematic diagram of the differential part of the utility model；

Fig. 9 is the structural schematic diagram of the utility model sleeve；

Figure 10 is the structural schematic diagram of another angle of the utility model sleeve；

Figure 11 is the structural schematic diagram of the utility model towing plate；

Figure 12 is the first embodiment of the utility model contact mechanism；

Figure 13 is second of embodiment of the utility model contact mechanism.

Specific embodiment

Below in conjunction with the embodiment that attached drawing 1 to 13 provides, the automatic transfer switching electric appliance of the utility model is further illustrated Specific embodiment.The automatic transfer switching electric appliance of the utility model is not limited to the following description.

The pedestal 2 of the automatic transfer switching electric appliance of the utility model as show Fig. 1-3 is set in the cavity on right side in pedestal 2 There is driver, is set in the cavity in left side there are two upper and lower symmetrically arranged conversion module in pedestal 2, each conversion module wraps Include switching mechanism 100 and contact mechanism 200 and the traction mechanism being connected between switching mechanism 100 and contact mechanism 200 300, pivot 1 passes through the switching mechanism 100 of two conversion modules, and the contact mechanism 200 of two conversion modules is respectively connected to commonly use Side power supply and prepped side power supply, driver can be motor, and pivot 1 can be connect by retarder or directly with driver, Pivot 1 can also be directly as the output shaft of motor, the contrary setting of the combined floodgate of two switching mechanisms 100 and can be simultaneously The corresponding power supply of disjunction, pivot 1 can drive one contact mechanism 200 of combined floodgate of switching mechanism 100 of side when rotating to side, Another contact mechanism 200 of 100 separating brake of switching mechanism of the other side, or two contact mechanisms 200 is made to be held at separating brake shape State enables automatic transfer switching electric appliance to close a floodgate three and work in dual power supply separating brake, common side power supply combined floodgate and prepped side power supply It is converted between state.

A kind of embodiment of switching mechanism 100 is shown referring to Fig. 4, switching mechanism 100 includes bracket 121, in bracket 121 Top side be equipped with the differential attachment 110 that connect with pivot 1, in the bottom side of bracket 121 equipped with the traction being connect with contact mechanism 200 Mechanism 300 is being equipped with the transmission mechanism 123, Yi Jifen being connected between differential attachment 110 and traction mechanism 300 in bracket 121 The stored energy mechanism 122 of 123 two sides of transmission mechanism, pivot 1 while the differential attachment 110 with two switching mechanism 100 are not set Connection, it is 122 energy storage of stored energy mechanism that differential attachment 110, which is able to drive the rotation of transmission mechanism 123, and stored energy mechanism 122 is turning over extremely The closing position or open position that can and drive transmission mechanism 123 to go to the other side are released when point, transmission mechanism 123 passes through dragger Structure 300 drives the movement of contact mechanism 200 combined floodgate or separating brake corresponding power, when transmission mechanism 123 is located at open position, differential machine Structure 110 can avoid 123 flexible rotating certain angle of transmission mechanism, continue to rotate along separating brake direction, another guaranteeing not interfering Side conversion equipment 110 avoids the power supply of two sides while closing a floodgate while combined floodgate.

Referring to Fig. 5, when the differential attachment 110 of common side power supply goes to sub-gate position 1 by closing position under the drive of pivot 1, Differential attachment 110 acts separating brake by triggering stored energy mechanism 122 and often uses side power supply, while the differential attachment 110 of prepped side power supply Sub-gate position 1 is gone to by sub-gate position 2, differential attachment 110 does not trigger the movement of stored energy mechanism 122, and prepped side power supply is still in separating brake shape State, product are transformed into dual power supply gate-dividing state by common side power supply "on" position；The differential attachment 110 of common side power supply continues to turn Dynamic, when going to sub-gate position 2 by sub-gate position 1, differential attachment 110 does not trigger the movement of stored energy mechanism 122, commonly use side power supply still in Gate-dividing state, while the differential attachment 110 of prepped side power supply goes to closing position by sub-gate position 1, differential attachment 110 passes through triggering storage Energy mechanism 122 acts combined floodgate prepped side power supply, and product is transformed into prepped side power supply "on" position by dual power supply gate-dividing state.

Referring to Fig. 4, differential attachment 110 is including position-limiting drum 114 and the difference connecting in position-limiting drum 114 with pivot 1 is arranged in Moving part 111, differential part 111 are connect with transmission mechanism 123, and differential piece 116, on the differential part 111 is equipped on differential part 111 Equipped with the sliding slot 115 for accommodating differential piece 116, the guide groove 117 cooperated with differential piece 116, guide groove are equipped on position-limiting drum 114 117 are obliquely installed with the rotation direction of differential part 111, and pivot 1 drives differential part 111 to rotate time difference motion block 116 with differential part 111 While rotation under the guiding role of guide groove 117 in sliding slot 115 sliding axially along differential part 111, guide groove 117 Side wall in circumferential direction limits differential piece 116, limits the slewing area of differential part 111.

A kind of embodiment of differential attachment 110 is shown referring to Fig. 4, the circumference of differential part 111 is equipped with and transmission mechanism 123 cooperation differential slots 113 and with position-limiting drum 114 cooperate differential piece 116, differential piece 116 of circular arc lateral wall is equipped with The slide bar 1161 of protrusion is equipped with the guide groove 117 cooperated with differential piece of 116 upper slide bars 1161, pivot on the inner wall of position-limiting drum 114 When axis 1 drives differential part 111 to rotate, differential piece 116 of slide bar 1161 drives differential piece under the guiding role of guide groove 117 116 in sliding slot 115 sliding axially along differential part 111, when slide bar 1161 is against the inner wall in 117 circumferential direction of guide groove to difference The rotation of moving part 111 is limited, and differential attachment 110 passes through differential part 111, the guide groove of differential piece 116 and position-limiting drum 114 117 cooperations, differential part 111 drive 200 switch closing and switch opening power supply of contact mechanism by transmission mechanism 123 in rotation.Differential part 111 differential slot 113 is in the arc-shaped and is greater than the transmission shaft 1232 of transmission mechanism 123, differential when other side power supply closes a floodgate Slot 113, which can avoid transmission mechanism 123, enables differential part 111 to rotate the not switching mechanism with other side power supply with pivot 1 100 interference, differential piece 116 on differential part 111 when being rotated with differential part 111 by with the guide groove 117 on position-limiting drum 114 Differential part 111 can either be limited in closing position, and differential part 111 can be enable freely to turn in open position by cooperation Dynamic certain angle, has the characteristics that have that structure is simple, occupies little space, is convenient for assembling, high reliablity.

Further, the guide groove 117 on 114 inner wall of position-limiting drum and the rotation direction of differential part 111 are obliquely installed, guiding The inner wall of slot 117 radially can be pushed in differential piece 116 rotation differential piece 116 axially move closer to or far from transmission mechanism 123, the guide groove 117 includes the upper guide groove 1172 of the lower guide channel 1171 and opening upwards that Open Side Down, lower guide channel 1171 It being connected to upper guide groove 1172, lower guide channel 1171 is corresponding to go to the sub-gate position 1 of this i.e. side of closing position to closing position in open position, Make differential piece 116 slide downward in sliding slot 115, upper guide groove by lower guide channel 1171 and the cooperation of differential piece 116 of slide bar 1161 The sub-gate position 1 that the 1172 corresponding open positions in the other side go to this i.e. side of closing position passes through upper guide groove 1172 to sub-gate position 2 The cooperation of slide bar 1161 with differential piece 116 makes differential piece 116 upward sliding in sliding slot 115.Further, in differential part 111 Locating part 118 is equipped between transmission mechanism 123, motion block 116 of being on duty is rotated to closing position with differential part 111 and led under Slot 1171 guiding driving under in sliding slot 115 along the axially downwardly sliding of differential part 111 when, by locating part 118 to differential The side limit of block 116 prevents differential part 111 toward back rotation to limit the slewing area of differential part 111, while passing through lower guide channel 1171 side wall limits differential piece 116 of the other side, differential part 111 is reliably limited in closing position, motion block 116 of being on duty It is rotated with differential part 111 to open position and under the driving of the guiding of upper guide groove 1172 when upward sliding, avoids locating part 118 Enable differential part 111 that certain angle to be freely rotated in open position.Specifically, being equipped with evacuation at the middle part of locating part 118 The limit pivot hole 1181 of pivot 1 is equipped with the position limit arm 1182 connecting with transmission mechanism 123 on the circumference of locating part 118, Position limit arm 1182 is equipped with the limit notch 1185 cooperated with transmission mechanism 123, and transmission mechanism 123 is worn by limit notch 1185 It crosses position limit arm 1182 and reaches in differential slot 113 and cooperate with differential part 111, differential part 111 is corresponding the two of 113 circumferential direction of differential slot Side is respectively equipped with sliding slot 115 and differential arm 112, and along the axial direction setting of differential part 111, differential piece 116 is arranged in cunning sliding slot 115 It is slidably matched in slot 115, the corresponding side in the side of sliding slot 115 protrusion and position limit arm 1182 axially downward of differential arm 112 Cooperating limit, differential arm 112 and differential piece 116 are circumferentially disposed at the two sides of position limit arm 1182,.The locating part of present embodiment 118 have the characteristics that contact area is big, reliable transmission, are breached in differential 111 structure of part by the cooperation with differential piece 116 Limitation can improve limit effect to differential part 111 in closing position and differential attachment 110 and driver The reliability that structure 123 cooperates, while differential part 111 can avoid locating part 118 again to open position rotation time difference motion block 116, Locating part 118 and other mechanical interferences will not be led to the problem of, it is of course also possible to it is not provided with locating part 118, differential piece 116 It can be directly wholely set with the cooperation of transmission mechanism 123 or locating part 118 with transmission mechanism 123, belong to the utility model Protection scope, limit and rotational freedom are opposite just poorer so certainly.

A kind of specific embodiment of differential part 111 is shown referring to Fig. 8, differential part 111 is ring flange comprising at cylinder The pivot plate 1112 of the pivot post 1111 of shape and two center symmetric settings in 1111 two sides of pivot post, pivot post 1111 Middle part be equipped with the pivot hole 1114 that cooperate with pivot 1, the cross sectional shape cooperation of heteromorphism part on pivot hole 1114 and pivot 1 can To be kidney ellipsoid, it is also possible to other polygons, bearing part 119 is equipped between the top and position-limiting drum 114 of pivot post 1111, The space from end of the head end of pivot plate 1112 and another pivot plate 1112 is arranged and is formed sliding slot 115,1112 head end of pivot plate Bottom side be equipped with differential arm 112, the bottom side of pivot plate 1112 is corresponding to be equipped with differential slot between differential arm 112 and sliding slot 115 113, two differential arms 112 and two differential slots 113 are symmetrically arranged at the two sides of pivot post 1111.

A kind of embodiment of transmission mechanism 123 is shown referring to Fig. 4, the bracket 121 is including snap-gauge 1211 and at U Type tips upside down on the support 1212 of 1211 top side of snap-gauge, and transmission mechanism 123 includes two driving plates 1231 that are coaxial and being oppositely arranged, And it is connected to two transmission shafts 1232 and two drive shafts 1233 of two driving plates, 1231 inside, transmission shaft 1232 and driving Axis 1233 is arranged alternately along the circumferential direction of differential part 111, and transmission shaft 1232 and drive shaft 1233 are able to drive driving plate 1231 with pivot It is circumferentially rotated centered on the axis of axis 1, drive shaft 1233 is connect with stored energy mechanism 122, naturally it is also possible to be not provided with drive shaft 1233, stored energy mechanism 122 can also directly be connect with transmission shaft 1232；

The top of transmission shaft 1232 passes through driving plate 1231 and support 1212 extendes back and cooperates in differential slot 113, transmission shaft 1232 bottom end cooperates after passing through driving plate 1231 and snap-gauge 1211 with traction mechanism 300, on snap-gauge 1211 and support 1212 It is respectively equipped with two limiting slots 1213 for cooperating camber with transmission shaft 1232, the angle and contact mechanism 200 of limiting slot 1213 Moving contact 210 rotational angle matching, and on snap-gauge 1211 and support 1212 correspondence set between two limiting slots 1213 There is the bracket pivot hole 1214 of evacuation pivot 1, two limiting slots 1213 are with 1214 center symmetric setting of bracket pivot hole, limiting slot 1213 angle is about twice of differential slot 113, guarantees that transmission mechanism 123 can reach behind the dead point for turning over stored energy mechanism 122 Onto differential part 111, the operation of three sections is realized.

A kind of embodiment of stored energy mechanism 122 is shown referring to Fig. 4, two 122 center symmetric settings of stored energy mechanism are passing The two sides of motivation structure 123, stored energy mechanism 122 include the energy storage bar 1221 being connected between snap-gauge 1211 and support 1212, and The guide rod 1222 being connected between energy storage bar 1221 and drive shaft 1233 and the energy-stored spring 1225 being set on the outside of guide rod 1222, One end of guide rod 1222 is set there are two the leading arm 1224 being oppositely arranged, and the inside of two leading arms 1224 is against drive shaft respectively 1233 two sides, the outside of two leading arms 1224 and one end of energy-stored spring 1225 offset, the other end of energy-stored spring 1225 It is against on the circumference of energy storage bar 1221, the other end of guide rod 1222, which is equipped with, covers the swinging chute cooperated in the middle part of energy storage bar 1221 1223, swinging chute 1223 along guide rod 1222 length direction be arranged, guide rod 1222 can centered on energy storage bar 1221 along week To while rotation, compressed energy-storage spring 1225 is moved radially along energy storage bar 1221, when the active force side of energy-stored spring 1225 To it is just tangent with the rotation direction of drive shaft 1233 when as dead-centre position, the decrement of energy-stored spring 1225 is maximum at this time, If drive shaft 1233 continues that energy-stored spring 1225 is driven to turn over dead-centre position, energy-stored spring 1225 ifs, which can start to release, can accelerate drive Moving axis 1233 rotates.

As shown in Fig. 1,3,12-13, four groups of contact grooves 3 arranged side by side, the both ends point of contact groove 3 are equipped in pedestal 2 Do not set there are two the static contact 210 that is oppositely arranged, the middle part of contact groove 3 be equipped with the moving contact 220 that cooperates with static contact 210 with And the rotary axis groove 31 of moving contact 220 is accommodated, moving contact 220 includes the shaft 222 being rotatably provided in rotary axis groove 31, in shaft It is radially equipped on 222 and stretches out the movable touch knife 224 that rotary axis groove 31 and two sides static contact 210 are engaged, at the middle part of shaft 222 Equipped with the elastic parts 225 and the axially disposed elastic parts chamber for being used to accommodate elastic parts 225 cooperated with movable touch knife 224 Body, the bottom end of shaft 222 and the bottom wall interval of rotary axis groove 31 are arranged, and are equipped on the bottom wall of rotary axis groove 31 to 222 protrusion of shaft And at hemispheric supporter 226, the bottom center of shaft 222 be equipped with the rotation slot 2260 cooperated with supporter 226 and with The hemispherical to cooperate supporter 226 is arranged at arc shape for the centre bore 2250 of elastic parts cavity connection, rotation slot 2260, By the cooperation of rotation slot 2260 and supporter 226, reliable limit effect can not only be played for the movement of shaft 222, and And the bottom end of shaft 222 and the interval of pedestal 2 are set, reduce contact area, drop between the bottom end of shaft 222 and pedestal 2 Low-frictional force prevents excessive wear from shaft 222 being made to fail, improves the service life of product.

2 the first embodiment for showing moving contact 220, the elastic parts 225 include into the spring of frame shape referring to Fig.1 Bracket 2251 and the touch spring 2252 that 2251 inside of spring support is arranged in, spring support 2251 pass through in strip Heart hole 2250 is packed into the elastic parts cavity of shaft 222, and the middle part of the shaft 222 radially offers and elastic parts The upper cavity 2231 and lower chamber 2232 of cavity connection, are equipped with movable touch knife 224, bullet in upper cavity 2231 and lower chamber 2232 Spring bracket 2251 includes being arranged in bottom into circular spring retaining plate 2253, and be oppositely arranged on spring retaining plate 2253 The spring clip plate 2254 at both ends, 2254 l-shaped of spring clip plate, one end, which is respectively perpendicular, is connected to the two of spring retaining plate 2253 Side, the other end is equipped with spring top plate 2255 made of extending towards, on spring retaining plate 2253, spring clip plate 2254 and spring top The space for accommodating touch spring 2252 is surrounded between plate 2255, is equipped in the inside of spring retaining plate 2253 and is used for fixed contact bullet The bottom end of the fixed block (not shown) of spring 2252, spring support 2251 is located at outside shaft 222, and the rotation slot 2260 is set Set and cooperate in the outside of 2251 bottom of spring support and supporter 226, present embodiment by the bottom of spring support 2251 with Supporter 226 on pedestal 2 cooperates, and can be effectively reduced the abrasive effect of shaft 222, and spring support 2251 is preferably metal Material, not only frictional force is smaller between the pedestal of plastics 2 for metal material, but also the structural strength of metal material is also higher, resists Tired effect is more preferable, and the service life is longer.Specifically, 224 sets of movable touch knife in upper cavity 2231 and lower chamber 2232 are in spring The inside of bracket 2251, touch spring 2252 are against bottom side and the spring retaining plate 2253 of the movable touch knife 224 in lower chamber 2232 Between, it is moved down by 2252 push the spring fixed plate 2253 of touch spring, while epicoele is pulled by spring top plate 2255 Movable touch knife 224 in body 2231 is guaranteed and static contact with guaranteeing all to apply certain pressing force to two movable touch knifes 224 The end pressure of reliable fit.

3 second of embodiment for showing moving contact 220, the elastic parts 225 include into the elastic slice of frame shape referring to Fig.1 Bracket 2256 and the elastic piece 2257 that 2256 outside of elastic slice bracket is set, the center that elastic slice bracket 2256 passes through strip Hole 2250 is packed into the elastic parts cavity of shaft 222, and the middle part of shaft 222 is radially offered to be connected to elastic parts cavity Upper cavity 2231 and lower chamber 2232, be equipped with movable touch knife 224 and elastic piece 2257 in upper cavity 2231 and lower chamber 2232, 2256 sets of the elastic slice bracket outsides in two movable touch knifes 224, two elastic pieces 2257 are separately positioned on the outer of elastic slice bracket 2256 Two movable touch knifes 224 are against the inside of upper cavity 2231 and lower chamber 2232 when cooperating to provide with static contact by side respectively End pressure, the elastic piece 2257 in lower chamber 2232 is arranged between movable touch knife 224 and centre bore 2250, at the bottom of shaft 222 The two sides that end is located at centre bore 2250 are set there are two semi-circular groove, and semi-circular groove constitutes circle together with a part of centre bore 2250 The rotation slot 2260 of shape can reduce the frictional force between 222 bottom end of shaft and supporter 226, extend the use of shaft 222 In the service life, relative to the first embodiment, elastic piece 2257 is capable of providing bigger pressing force, with meet movable touch knife 224 with it is quiet Bigger end pressure demand when contacts mates, but elastic piece 2257 setting can not be arranged on elastic slice bracket 2256 on the outside and The rotation slot 2260 that supporter 226 cooperates.

The top side of 2-13 referring to Fig.1, the shaft 222 are equipped at cylindrical limit shaft 227, on the top of limit shaft 227 Side is equipped with the gear member 221 connecting with traction mechanism 300, and the limit hole with 227 clearance fit of limit shaft is equipped on cover board 4 41, the effect of guidance and limit can be provided for the movement of shaft 222 by the cooperation of limit hole 41 and limit shaft 227, balanced The torque at both ends in shaft 222, stress when shaft 222 being enable to cooperate with supporter 226 near contact surface are distributed, and are prevented Only concentrated wear seriously causes shaft 222 to fail.

A kind of embodiment of traction mechanism 300 is shown referring to Fig. 3, traction mechanism 300 includes cooperating with transmission mechanism 123 Towing plate 310, the operation panel 320 that is fixedly connected with moving contact 220 and two be respectively hinged at towing plate 310 and dynamic touching The middle part of the draw bar 330 of first 220 two sides, operation panel 320 is equipped with and 221 meshed gears slot 321 of gear member, transmission mechanism 123 drive two 330 reverse motions of draw bar by towing plate 310, to drive the rotation of moving contact 220 to connect the stationary contact at both ends First 210, when the both ends of moving contact 220 and the static contact 210 of two sides contact can power switch, separate when disconnect power supply.

Further, the middle part of the towing plate 310 is equipped with the tow pin hole 314 of evacuation pivot 1, in towing plate 310 Two sides set there are two draft arm 311, the side of draft arm 311 is hinged with draw bar 330 respectively, in two draft arms 311 The traction grooved 313 cooperated with transmission shaft 1232 on transmission shaft 1232 is formed between circumferential direction, transmission shaft 1232 is for stored energy mechanism It is slided when 122 energy storage along traction grooved 313, prevents 220 breaking speed of moving contact from pulling out electric arc slowly excessively and burn contact mechanism 200, pass Moving axis 1232 pushes draft arm 311 that towing plate 310 is driven to rotate when stored energy mechanism 122 releases energy, guarantees that moving contact 220 can be fast Fast switch closing and switch opening.

Closing position referring to shown in Fig. 6, pivot 1 drive differential part 111 to rotate, and differential piece 116 in lower guide channel 1171 It pushes and moves down (the differential arm 112 that Fig. 6 shows the other side), transmission mechanism 123 between position limit arm 1182 and differential arm 112 Transmission shaft 1232 drive position limit arm 1182 to differential piece 116 rotate, while transmission shaft 1232 also drives stored energy mechanism 122 storage Can, drive transmission shaft 1232 quickly to rotate to closing position when stored energy mechanism 122 turns over dead point, transmission shaft 1232 passes through traction Mechanism 300 drives contact mechanism 200 to close a floodgate corresponding power supply, while transmission shaft 1232 drives on differential part 111 differential piece 116 turns It moves until differential piece 116 of side and the side wall of guide groove 117 offset, differential part 111 can not continue to rotate, while transmission shaft 1232 drive position limit arms 1182 are against differential piece 116 of the other side, and differential part 111 realizes also without normal direction back rotation to the side Differential attachment 110 is in the limit of closing position, while 110 (not shown) of differential attachment of the other side passes through difference in the process Dynamic slot 113 avoids stored energy mechanism 122, and the other side remains at gate-dividing state.

Open position referring to shown in Fig. 7, the mechanism in Fig. 6 rotate counterclockwise, and pivot 1 drives differential part 111, differential The side wall in the left side of differential slot 113 pushes transmission shaft 1232 on part 111, while differential piece 116 left side for also pushing position limit arm 1182, Driving the rotation of transmission mechanism 123 by transmission shaft 1232 is 122 energy storage of stored energy mechanism of two sides, when the effect of stored energy mechanism 122 Power and the circumferential direction of transmission mechanism 123 are tangent, as dead-centre position, if transmission mechanism 123, which continues to rotate, drives stored energy mechanism 122 Dead-centre position is turned over, the active force of two stored energy mechanisms 122 can be made to be changed to identical as 123 rotation direction of transmission mechanism, energy storage machine Structure 122 starts to release energy after the blocking effect for losing transmission mechanism 123, and the bottom end of transmission shaft 1232 circumferentially passes through lead rapidly Traction grooved 313 on corbel back slab 310 is against the side of draft arm slot 311, drives the combined floodgate pair of contact mechanism 200 by draw bar 330 The power supply of side is answered, the top of transmission shaft 1232 drives position limit arm 1182 to leave differential piece 116, and is against the difference of the other side rapidly Differential part 111 is driven to go to open position on swing arm 112, meanwhile, the differential part 111 of other side switching mechanism 100 is in pivot 1 Also open position is gone under drive, differential arm 112 is also made to offset with position limit arm 1182, and the process is kept away by differential slot 113 Allow stored energy mechanism 122, contact mechanism 200 is failure to actuate, and power supply remains at gate-dividing state, in the position when two sides two storages Can mechanism 122 acted on pivot 1 from two opposite directions respectively, play the limit effect to pivot 1, pivot 1 is to up time If needle or either direction counterclockwise rotate, 122 energy storage of stored energy mechanism corresponding to the side will be triggered.

Then mechanism is continued to rotate counterclockwise by the position of Fig. 7, what differential part 111 drove differential piece 116 circumferentially to rotate Meanwhile upper guide groove 1172 can push differential piece 116 to move the differential arm 112 for exposing left side vertically, avoid position limit arm 1182 It is acted to avoid triggering stored energy mechanism 122, so that the side power supply is maintained at gate-dividing state, while the switching mechanism 100 of the other side is closed The corresponding power supply of lock.

A kind of specific embodiment referring to shown in Fig. 4, transmission mechanism 123 and support 1212 are mounted on snap-gauge 1212, The lower end of transmission shaft 1232 is installed on the limiting slot 1213 of snap-gauge 1212 and by the lower surface of bottom end protrusion snap-gauge 1212, is passed The upper end of moving axis 1232 is installed on the limiting slot 1213 of support 1212 and by the upper surface of top protrusion support 1212, is driven Mechanism 123 can rotate between snap-gauge 1212 and support 1212, and rotational travel is corresponding to the limiting slot 1213 of snap-gauge 1212 Angular dimension, the installation of two transmission shafts 1232 and motion profile are centrosymmetric distribution, and transmission mechanism 123 includes transmission shaft 1232, driving plate 1231 and fixing axle 1233, fixing axle 1233 are connect with upper and lower two driving plates 1231, and welding, riveting can be used It connects or other connection types is fixed；Stored energy mechanism 122 includes energy-stored spring 1225, and energy storage bar 1221 and guide rod 1222 are formed, led One end of bar 1222 is set there are two leading arm 1224, formed between leading arm 1224 with the arc groove that cooperates with fixing axle 1233, 1221 both ends of energy storage bar are respectively equipped with the mounting groove 1226 of annular, are equipped with and mounting groove 1226 on snap-gauge 1212 and support 1212 The mounting hole 1227 of cooperation, in 123 rotation process of transmission mechanism, guide rod 1222 using the center line of energy storage bar 1221 as axis, with It is rotated together with fixing axle 1233, in rotation process, the continuous compressed energy-storage of energy-stored spring 1225, after turning over dead point, energy-stored spring The release of 1225 energy, makes transmission mechanism 123 quickly go to another location by spring force；Locating part 118 is mounted on support 1212 Upper surface, limiting groove 1185 and the top of transmission shaft 1232 be engaged, and locating part 118 follows transmission mechanism always 123 rotate together, and differential part 111 is mounted on locating part 118, and differential piece 116 is mounted in the sliding slot 115 of differential part 111, poor Motion block 116 follows differential part 111 to rotate together always, and bearing part 119 is mounted on the circumference of the pivot post 1111 of differential part 111 On, position-limiting drum 114 is fixedly connected on the top side of support 1212 by screw.Fig. 7 is the gate-dividing state of conversion equipment 100, differential Part 111 pushes the top rotation of transmission shaft 1232 by the inner wall of differential slot 113, so that entire transmission mechanism 123 is driven to rotate, So that conversion equipment 100 is gone to closing position, under gate-dividing state, differential part 111 can flexible rotating certain angle, rotation Track is circular arc corresponding to the differential slot 113 of differential part 111, and during rotation, differential piece 116 follows differential part always 111 move together, and differential piece 116 of slide bar 1161 is moved along the lower guide channel 1171 of position-limiting drum 114.Fig. 6 is switching mechanism 100 "on" position, switching mechanism 100 is by separating brake to combined floodgate stage, and differential piece 116 of slide bar 1161 is along position-limiting drum 114 Upper guide groove 1172 moves, and during the motion, the inner wall of 1172 circumferential direction of upper guide groove offsets with differential piece 116 of slide bar 1161, limits It makes differential piece 116 to continue to move, another side limits differential piece 116 by the side of locating part 118 and back move, and realizes The limit of differential piece 116 and the direction of rotation in closing position of differential part 111.Pivot 1 can pass through differential attachment when rotating 110 drive the transmission mechanism 123 of side to rotate to the position of another final drive gear 123, while other side differential attachment 110 Avoid transmission mechanism 123.

Switching mechanism 100 pushes the draft arm on towing plate 310 in divide-shut brake rotation process, through transmission shaft 1232 313 drive the rotation of towing plate 310, and towing plate 310 is matched by axis of traction 1228 with the traction axis hole 1229 on draw bar 330 Crossed belt moves two 330 or so reverse motions of draw bar, and draw bar 330 is cooperated by operation axis hole 1229a and operation panel 320, band Dynamic operation panel 320 and the rotary motion together of moving contact 220, thus can realize the division campaign of dynamic/static contact.

It, cannot the above content is specific preferred embodiment further detailed description of the utility model is combined Assert that the specific implementation of the utility model is only limited to these instructions.For the ordinary skill of the utility model technical field For personnel, without departing from the concept of the premise utility, a number of simple deductions or replacements can also be made, should all regard To belong to the protection scope of the utility model.

Claims (10)

1. a kind of automatic transfer switching electric appliance, including pedestal (2) and the switching mechanism (100) being arranged in pedestal (2), contact Mechanism (200) and traction mechanism (300), it is characterised in that: contact mechanism (200) includes two static contacts being oppositely arranged (210) and the moving contact (220) that is rotatably provided between two static contacts (210), moving contact (220) include shaft (222), Elastic parts (225) with the movable touch knife (224) of static contact (210) cooperation and with movable touch knife (224) cooperation, in shaft (222) middle part is equipped with the elastic parts cavity for accommodating elastic parts (225), and the top of shaft (222) passes through traction mechanism (300) it is connect with switching mechanism (100), pedestal (2) is equipped with the supporter (226) at hemispherical projections, in shaft (222) It rotation slot (2260) and the centre bore that is connected to elastic parts cavity that bottom center, which is equipped with cooperate with supporter (226), (2250)。

2. automatic transfer switching electric appliance according to claim 1, it is characterised in that: the elastic parts (225) includes bullet Plate rack (2256), elastic slice bracket (2256) are packed into the elastic parts chamber of shaft (222) by the centre bore (2250) of strip In vivo, semi-circular groove, semi-circular groove and centre bore there are two being set in the two sides that the bottom end of shaft (222) is located at centre bore (2250) (2250) a part constitutes circular rotation slot (2260) together.

3. automatic transfer switching electric appliance according to claim 1, it is characterised in that: the elastic parts (225) includes bullet Spring bracket (2251), spring support (2251) are packed into the elastic parts chamber of shaft (222) by the centre bore (2250) of strip In vivo and the bottom end of spring support (2251) is located at shaft (222) outside, and the rotation slot (2260) is arranged in spring support (2251) outside of bottom.

4. automatic transfer switching electric appliance according to claim 2, it is characterised in that: the middle part of the shaft (222) is equipped with The upper cavity (2231) and lower chamber (2232) being connected to elastic parts cavity, in upper cavity (2231) and lower chamber (2232) Equipped with movable touch knife (224) and elastic piece (2257), elastic slice bracket (2256) is covered in the outside of two movable touch knifes (224), two bullets Property piece (2257) is separately positioned on the outside of elastic slice bracket (2256), and two movable touch knifes (224) are against upper cavity respectively (2231) and in lower chamber (2232), the elastic piece (2257) in lower chamber (2232) is arranged in movable touch knife (224) and centre bore (2250) between.

5. automatic transfer switching electric appliance according to claim 3, it is characterised in that: the middle part of the shaft (222) is equipped with The upper cavity (2231) and lower chamber (2232) being connected to elastic parts cavity, in upper cavity (2231) and lower chamber (2232) It is equipped with movable touch knife (224), the spring support (2251) passes through spring support (2251) at frame shape, two movable touch knifes (224) Inside, between the movable touch knife (224) in the inside and lower chamber (2232) of spring support (2251) bottom be equipped with contact bullet Spring (2252) is equipped with the rotation slot (2260) cooperated with supporter (226), spring in the outside of the bottom of spring support (2251) The top side of bracket (2251) and the movable touch knife (224) in upper cavity (2231) cooperate.

6. automatic transfer switching electric appliance according to claim 1, it is characterised in that: be equipped in the pedestal (2) and shaft (222) cover board (4) that top cooperates, cover board (4) is equipped with pilot hole (41) corresponding with shaft (222), in shaft (222) Top is equipped with the guiding axis (227) that cooperate with pilot hole (41), the top of guiding axis (227) across pilot hole (41) afterwards with lead Draw mechanism (300) connection.

7. -5 any automatic transfer switching electric appliance according to claim 1, it is characterised in that: be equipped in the pedestal (2) The contact groove (3) of contact mechanism (200) is accommodated, static contact (210) is arranged at the both ends of contact groove (3), in contact groove (3) Portion is equipped with the rotary axis groove (31) for accommodating shaft (222), and movable touch knife (224) stretches out the static contact (210) of rotary axis groove (31) and two sides It is engaged, contact groove (3) is equipped with arc-extinguishing mechanism (230) in the side of static contact (210).

8. -5 any automatic transfer switching electric appliance according to claim 1, it is characterised in that: including being arranged in pedestal (2) In two switching mechanisms (100), two switching mechanisms (100) by two traction mechanisms (300) respectively with two contact machines Structure (200) connection, two contact mechanisms (200) are respectively connected to common side power supply and prepped side power supply, two switching mechanisms (100) Along the axially symmetric setting of pivot (1), and the transmission mechanism (123) of two switching mechanisms (100) is along the circumferential phase of pivot (1) To setting in two sides, pivot (1) can drive switching mechanism (100) one contact mechanism of combined floodgate of side when rotating to side (200), the switching mechanism (100) of the other side then another contact mechanism (200) of separating brake or make another contact mechanism (200) protect It holds in gate-dividing state.

9. -5 any automatic transfer switching electric appliance according to claim 1, it is characterised in that: the switching mechanism (100) Including bracket (121) and the transmission mechanism (123) being arranged in bracket (121), bracket (121) is interior in transmission mechanism (123) Two sides be respectively equipped with transmission mechanism (123) cooperation stored energy mechanism (122), the top side of bracket (121) be equipped with and transmission The differential attachment (110) of mechanism (123) one end fits is equipped in the bottom side of bracket (121) and matches with transmission mechanism (123) other end The differential attachment (110) of the traction mechanism (300) of conjunction, two switching mechanisms (100) is connect with the same pivot (1), dragger Structure (300) is connect with moving contact (220).

10. automatic transfer switching electric appliance according to claim 9, it is characterised in that: the differential attachment (110) includes limit The differential part (111) that position cylinder (114) and setting are connect in the position-limiting drum (114) with pivot (1), transmission mechanism (123) with it is poor Moving part (111) cooperation, is equipped with differential piece (116) cooperated with position-limiting drum (114) on differential part (111)；On differential part (111) Equipped with sliding slot (115), sliding slot (115) is arranged along the axial direction of differential part (111), and differential piece (116) setting is sliding in sliding slot (115) Dynamic cooperation, is equipped with the guide groove (117) cooperated with differential piece (116), guide groove (117) and differential part on position-limiting drum (114) (111) rotation direction is obliquely installed；The transmission mechanism (123) includes two driving plates being oppositely arranged (1231), and Two transmission shafts (1232) and two drive shafts (1233) being connected on the inside of two driving plates (1231), transmission shaft (1232) and Alternately along the circumferential direction setting of differential part (111), drive shaft (1233) connect with stored energy mechanism (122), is driven drive shaft (1233) Axis (1232) passes through position limit arm (1182) and differential part (111) and cooperates, and differential part (111) is corresponding in sliding slot (115) and differential arm (112) differential slot (113) cooperated with transmission shaft (1232) is equipped between；Stored energy mechanism (122) includes connecting with bracket (121) Energy storage bar (1221), and the guide rod (1222) that is connected between energy storage bar (1221) and drive shaft (1233) and cover in guide rod (1222) energy-stored spring (1225) on the outside of, one end of guide rod (1222) are set there are two the leading arm (1224) that is oppositely arranged, and two The inside of a leading arm (1224) is against the two sides of drive shaft (1233), the outside of two leading arms (1224) and energy storage bullet respectively One end of spring (1225) offsets, and the other end of energy-stored spring (1225) is against on the circumference of energy storage bar (1221), guide rod (1222) The other end be equipped with cover the swinging chute (1223) cooperated on energy storage bar (1221)；The traction mechanism (300) includes and transmission The towing plate (310) of mechanism (123) cooperation, the operation panel (320) being fixedly connected with moving contact (220) and two cut with scissors respectively Connect the draw bar (330) in towing plate (310) and moving contact (220) two sides；The top side of moving contact (220) is equipped with guiding axis (227), the top side of guiding axis (227) is equipped with gear member (221), and the middle part of the operation panel (320) is equipped with and gear member (221) Meshed gears slot (321), the middle part of towing plate (310) is equipped with the tow pin hole (314) of evacuation pivot (1), in towing plate (310) two sides are set there are two draft arm (311), and two draft arms (311) are respectively articulated with two draw bars (330), two Between the circumferential direction of a draft arm (311) formed with transmission shaft (1232) cooperation traction grooved (313), transmission shaft (1232) for store up It can be slided when mechanism (122) energy storage along traction grooved (313).