CN104319146B - Single breakpoint quick-action assistant switch - Google Patents
Single breakpoint quick-action assistant switch Download PDFInfo
- Publication number
- CN104319146B CN104319146B CN201410531238.7A CN201410531238A CN104319146B CN 104319146 B CN104319146 B CN 104319146B CN 201410531238 A CN201410531238 A CN 201410531238A CN 104319146 B CN104319146 B CN 104319146B
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- contact
- movable contact
- spring
- moving
- movable
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
- H01H19/02—Details
- H01H19/10—Movable parts; Contacts mounted thereon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
- H01H19/02—Details
- H01H19/08—Bases; Stationary contacts mounted thereon
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
- H01H19/64—Encased switches adapted for ganged operation when assembled in a line with identical switches, e.g. stacked switches
Abstract
The invention discloses a single breakpoint quick-action assistant switch, and the single breakpoint quick-action assistant switch comprises a square shaft, a pull rod, a contact box, a cam, a movable contact spring, a static contact spring, a wiring device, a moving contact seat and a reset spring, the movable contact spring is the elastic metal sheet, one end of the movable contact spring is compressed in the wiring device, a moving contact is formed at the other end of the movable contact spring, a static contact matching with the moving contact is formed at one end of the static contact spring, one pair of moving contact and static contact is formed in the electric loop, the pressing force between the moving contact and the static contact can be kept through the reset spring pressure of the moving contact and the contact pressure of the reset spring in the moving contact seat, so that the contact resistance is low; for breaking, the lifting force to the middle of the moving contact from the moving contact seat can have lever effect for the moving contact, the moving contact can lift upwards fast for separating from the static contact, the separating speed is fast, the breaking capability is strong, the contact pull arc and burning phenomenon will not generated easily, the stability of the assistant switch is raised and the service life is prolonged.
Description
Technical field
The present invention relates to a kind of device for switching device for electric control loop, especially one kind are used for high-voltage switch gear two
Auxiliary switch (also known as permutator) in secondary control loop, belongs to device for switching technical field.
Background technology
Auxiliary switch is as a kind of conventional device for switching being applied in high-voltage switch gear secondary control loop, low by manipulating
The circuit of pressure side secondary circuit is opened and closed and to control the break-make of high-pressure side primary circuit, due to its be not only able to safe and reliable right
High-voltage switch gear is electrically accurately controlled moreover it is possible to precisely manipulate many control in switch electric interlock and relay protecting system
Signal, therefore auxiliary switch has become indispensable vitals in high and low voltage electrical equipment control system, and primary side is electrically set
Standby continuous, safe and reliable operation plays vital effect.Existing auxiliary switch adopts cam-type structure, bag mostly
Include square shaft, front and rear cover plate, pull bar and contact case assembly etc., its contact case assembly includes contact box, cam, moving contact again, moves and touch
Piece, static contact, back-moving spring and movable contact block etc..This kind of rotary cam type auxiliary switch is by the profile height of cam come division
The opening and closing of dynamic and static contact, realizes the switching of electric break-make in loop, generally adopts double breaking points bridge-type to touch in an electric loop
Header structure；A kind of auxiliary switch as disclosed in China's patent of invention cn200710049339.0, its contact contact is double breaking points bridge
Formula structure, as shown in figure 1, the rotation with moving cam 4 ＇ by the rotation of square shaft 3 ＇, utilizes in the rotary course of cam 4 ＇
The radius drop of cam 4 ＇ profile carrys out division two to dynamic/static contact 2 ＇；Its switch the opening away from the profile chi being limited to cam 4 ＇ of disjunction
Very little and contact box size, the detached ultimate range of dynamic/static contact 2 ＇ is equal to the difference of cam 4 ＇ profile radius；In addition, the combustion of switch
The arc time is directly related with the separating rate of dynamic/static contact 4 ＇, and such as separating rate is slow, then the degree of contact galvano-cautery is just serious, so
And the breaking speed of auxiliary switch of the prior art is by the gradient of the rotary speed of square shaft 3 ＇ and two sections of camber lines of cam 4 ＇
Emergency degree determines；The rotary speed of square shaft 3 ＇ is determined by the transmission speed of high-voltage switch gear mechanism case, if auxiliary to be improved is opened
The breaking speed closing, then can only optimize the profile gradient of cam 4 ＇；The gradient is delayed, and the precision of switch disjunction is low, and breaking speed is slow；Slope
Degree is anxious, and the rotating torque of switch is big, and the tangential forces acting on cam 4 ＇ are big, and contact is increased with the degree of wear of cam,
The mechanical life making auxiliary switch reduces.Double breaking points bridge-type auxiliary switch of the prior art, in disjunction, cam 4 ＇ arc
Face jacking movable contact block 1 ＇, movable contact block 1 ＇ are acted on by side force f1, always make a pair in two couples of dynamic/static contact 2 ＇ to touch
Head separates to contact prior to another, and the most electromagnetic energy in loop will formerly be released detached a pair of dynamic/static contact 2 ＇ side
Put, therefore the galvano-cautery of the two of auxiliary switch couples of dynamic/static contact 2 ＇ is just presented as that arcing scaling loss in side is serious, and other side scaling loss
Slightly, especially in the DC loop of larger perception, this defect becomes apparent from.Equally, in making process, movable contact block 1 ＇
In the presence of side force f1 that cam 4 ＇ gradient face gives, when synchronicity that two couples of dynamic/static contact 2 ＇ connect there is also certain
Difference, always occur a pair of contact prior to another to contact, this equally can cause dynamic/static contact 2 ＇ galvanic corrosion degree different, make
After a period of time, auxiliary switch can cause contact virtual connection because of the difference of both sides dynamic/static contact 2 ＇ galvanic corrosion degree, thus dropping
Its reliability low, reduction of service life.
Content of the invention
For deficiencies of the prior art, the present invention proposes a kind of single-break quick action type auxiliary switch, and it includes
Square shaft, pull bar, contact box, cam, movable contact spring, static contact, termination, movable contact block and back-moving spring, its movable contact spring is bullet
Property sheet metal, one end of movable contact spring is pressed in termination, movable contact spring the other end arrange moving contact, in static contact
One end is provided with the static contact matching with moving contact, and the present invention is only provided with a pair of dynamic/static contact in an electric loop, profit
With the contact pressure to movable contact spring for the back-moving spring in the reset resilient pressure of movable contact spring and movable contact block, keep dynamic/static contact
Thrust after contact is so as to contact resistance is low；When requiring to disconnect, movable contact block can allow to the top lift in the middle part of movable contact spring
Contact forms leverage so as to moving contact can be lifted rapidly upward and instantaneously be separated with static contact, and its separating rate is fast, disjunction
Ability is strong, is not likely to produce contact arcing and burning phenomenon, improves the stability of auxiliary switch, extend service life.
The present invention solves its technical problem, be the technical scheme is that a kind of single-break quick action type auxiliary switch, including
Square shaft, pull bar and contact case assembly, its contact case assembly includes contact box and the cam being arranged in contact box, movable contact spring, quiet
Contact, termination, movable contact block and back-moving spring, open up fluted, back-moving spring is arranged on moving contact on movable contact block
In the groove of seat, its construction features is: movable contact spring is that have resilient sheet metal, and one end of movable contact spring is provided with moving contact,
The other end of movable contact spring is passed through termination and is pressed in termination, be provided with and moving contact phase in one end of static contact
The static contact joined；It is provided with boss in the groove of movable contact block, movable contact spring is passed through the groove of movable contact block and is pressed in dynamic touching
On the boss of headstock, when movable contact block moves to the direction of close square shaft with the rotation of cam, movable contact spring is in reset itself
Under the dual function of elastic force and return spring pressure, just drive the moving contact of movable contact spring one end mobile and final to static contact direction
It is pressed on the static contact of static contact；When movable contact block moves to the direction away from square shaft with the rotation of cam, movable contact spring
Under the lift-up pressure of movable contact block inner convex platform, just with the deformable supports point at its termination end as fulcrum, stick up rise movable contact spring
The moving contact of the other end, and drive moving contact to stick up completely from static contact.
Above-mentioned single-break quick action type auxiliary switch, is provided with lift limiting block in described contact box, and lift limiting block sets
Put in the contact box cavity between movable contact block and termination, when movable contact spring is in the lift-up pressure of movable contact block inner convex platform
Under, with the deformable supports point at termination end as fulcrum, stick up when rising the moving contact of the movable contact spring other end, lift limiting block can be
Moving contact sticks up and is pressed against after rising to certain distance sticking up the movable contact spring during rising.
Above-mentioned single-break quick action type auxiliary switch, described lift limiting block be arranged on the left of movable contact block or right side contact
In box cavity, lift limiting block adopts insulant to make, and forms one, its lift with contact box in the way of injection or clamp
The position that limiting block is contacted with movable contact spring is in ramped shaped, and the inclined-plane being formed after sticking up liter with movable contact spring is matched.
Above-mentioned single-break quick action type auxiliary switch, the boss of setting in described movable contact block groove, its end is arc
Structure.
Above-mentioned single-break quick action type auxiliary switch, the lower end of described movable contact block is in inverted trapezoidal or inverted cone, the end of lower end
Portion becomes arc surfaced, and the curved end of its small end is pressed in the cambered surface of cam；It is provided with chute, movable contact block energy in contact box
Move up and down in the chute of contact box.
Above-mentioned single-break quick action type auxiliary switch, on movable contact spring with movable contact block in boss contact point, with deformable supports
Point is starting point, and its contact point is located at its moving contact apart from 0.4 to 0.8 times of deformable supports point length.
Above-mentioned single-break quick action type auxiliary switch, on movable contact spring with movable contact block in boss contact point, be arranged on dynamic touching
Point midway between head and deformable supports point.
Above-mentioned single-break quick action type auxiliary switch, after moving contact is contacted with static contact, its contact pressure is 1 to 2n.
Above-mentioned single-break quick action type auxiliary switch, the radial difference of cam outline is 1.2 to 3 millimeters.
Above-mentioned single-break quick action type auxiliary switch, described movable contact spring is by having resilient beryllium-bronze, phosphor bronze or rustless steel
Material is made, and zinc-plated or silver-plated in its surface of stainless steel.
Above-mentioned single-break quick action type auxiliary switch, near the position of static contact in contact box, is provided with magnet steel, its magnet steel
The action of a magnetic field direction be so that the direction that electric arc moves towards moving contact is moved.
Above-mentioned single-break quick action type auxiliary switch, described magnet steel is cylindrical, square column type or tile shape, leans in contact box
The position of nearly static contact is provided with corresponding magnet steel putting hole, magnet steel is assembled to magnet steel in friction tight mode and places in the hole.
Above-mentioned single-break quick action type auxiliary switch, is provided with heavy platform in described contact box, heavy platform be arranged on movable contact spring with
The afterbody that termination connects, heavy platform forms a skewed slot with the cavity inner wall of contact box, and one end of movable contact spring passes through termination
Afterwards, the bending deformation of its afterbody is clamped in this skewed slot.
Above-mentioned single-break quick action type auxiliary switch, described heavy platform forms one with contact box, and heavy platform is flat column or wedge
Shape.
Above-mentioned single-break quick action type auxiliary switch, the cavity that contact box is placed termination is in teapot shape, in its spout
Position opens up the skewed slot of arc, and the cavity of described teapot shape can accommodate instrument to carry out bending deformation operation by the afterbody of movable contact spring.
Above-mentioned single-break quick action type auxiliary switch, at the contact box back side, is provided with the sealing strip of projection；In contact box front
Corresponding site, be provided with the seal groove matching therewith, when multilamellar contact case assembly is assembled into one, the upper layer of contact box back side
Raised sealing strip can stick in the seal groove in lower layer of contact box front.
Above-mentioned single-break quick action type auxiliary switch, is additionally provided with return spring holder between movable contact block and back-moving spring,
Described back-moving spring is pressed on movable contact spring by return spring holder.
Above-mentioned single-break quick action type auxiliary switch, contact case assembly is provided with multilamellar altogether, and the front of each layer of contact box sets
It is equipped with the locating dowel of projection, the back side is provided with the location hole matching therewith, when multilamellar contact case assembly is assembled into one, lower floor
The raised locating dowel of contact box can fasten and position in the hole accordingly into upper layer of contact box.
Above-mentioned single-break quick action type auxiliary switch, described locating dowel is cylinder, elliptical cylinder-shape, Pedicellus et Pericarpium Trapae cylindricality or inverted cone.
Above-mentioned single-break quick action type auxiliary switch, described moving contact and static contact all using silver-nickel slider material, and
Contact surface is done gold-plated process, in the way of riveting or welding, contact is fixed on movable contact spring or static contact.
Compared with prior art, the invention has the beneficial effects as follows: single-break quick action type auxiliary switch proposed by the present invention, by
Made using elastic sheet metal in movable contact spring, and be only provided with a pair of sound contact in an electric loop, its with mutually have skill
Art is made movable contact spring using non-resilient sheet metal and is provided with two pairs of sound contacts in an electric loop and compares, the present invention's
Performance is more excellent, and work is more reliable, is embodied in: when movable contact block moves near the direction of square shaft with the rotation of cam
When, the movable contact spring that shell fragment material is made, under the dual function of reset itself elastic force and return spring pressure, just drives movable contact spring
On the static contact that the moving contact of one end moves and is finally pressed on static contact to static contact direction, due to the original shape of movable contact spring
In flat, its position contacting with termination and with setting moving contact position keeping parallelism, when its occur elastic deformation
Afterwards, the movable contact spring itself that its shell fragment material makes will produce an automatically reset elastic force, to make every effort to recover its straightened condition,
Its elastic force that automatically resets adds the pressure of back-moving spring in movable contact block, can guarantee that the close contact of dynamic/static contact, it puts on
Contact pressure on dynamic/static contact relies only on back-moving spring better than prior art and applies contact pressure to dynamic/static contact；Therefore its sound
The contact of contact is tightr, contact resistance is less, and reliability is higher.When movable contact block with the rotation of cam to away from square shaft
When direction is mobile, movable contact spring, under the lift-up pressure of movable contact block inner convex platform, just with the deformable supports point at its termination end is
Fulcrum, sticks up the moving contact rising the movable contact spring other end, and final drive moving contact sticks up completely from static contact, the movable contact spring energy of the present invention
Form lever construction with the boss contact point in movable contact block, improve separating rate and the separating distance of sound contact, therefore open
The breaking capacity closed strengthens.In addition, switch on-off only being completed by a pair of contact, be also not in showing of virtual connection in life-time service
As, it is to avoid prior art using the two pairs of contacts easily because the contact of two pairs of contacts is asynchronous, separate asynchronous and lead to draw
The problem of arc, scaling loss contact and virtual connection, improves the reliability of switch disjunction；Simultaneously because the present invention is in an electric loop
Only it is provided with a pair of sound contact, compared with prior art, decreases amount of parts, reduce small product size, saved auxiliary
Help the installing space of switch.
The present invention is provided with lift limiting block in contact box, when movable contact spring is in the lift-up pressure of movable contact block inner convex platform
Under, with the deformable supports point at termination end as fulcrum, stick up when rising the moving contact of the movable contact spring other end, lift limiting block can be
Moving contact sticks up and is pressed against after rising to certain distance sticking up the movable contact spring during rising, and its advantage is to prevent moving of movable contact spring end
Contact sticks up rise too high and the cavity wall that touches contact box, and prevents from movable contact spring from sticking up rising excessively and reduce its elastic reset
Energy.
The present invention is provided with heavy platform in described contact box, and heavy platform is arranged on the afterbody that movable contact spring is connected with termination,
And forming one with contact box, heavy platform forms a skewed slot with the cavity inner wall of contact box, is beneficial to and passes through one end of movable contact spring
After termination, by the afterbody of movable contact spring carry out bending deformation ramp-like and be clamped on that heavy platform and contact box cavity wall constitute oblique
In groove, its advantage is to prevent movable contact spring from moving left and right and positioning in the course of the work, it is to avoid alter about movable contact spring
Move and allow the joint of dynamic/static contact that error occurs.Heavy platform is arranged to flat column or wedge shape, its advantage is to allow touch
Fixing more firm, the more accurate positioning of afterbody after the bending of piece one end.As the intermediate location of heavy platform or skewed slot is made arc-shaped,
The afterbody of movable contact spring is then easily allowed to produce sliding and cause positioning.
The present invention is provided with boss in the groove of described movable contact block, and the end of its boss is arcuate structure, and it has
Beneficial effect is: in division course of action, movable contact spring can be contacted with the boss in movable contact block and be born it auxiliary switch
Compress, the boss of arcuate structure can allow movable contact spring stick up rise and reseting procedure in, its with movable contact block in boss contact point not
Disconnected change, thus improve the wear resistance of movable contact block, it is to avoid movable contact spring is as compressed one on boss for a long time
Fixing point and allow the boss unstable wear of movable contact block shorten its life-span, meanwhile, the boss of arcuate structure is moreover it is possible to allow movable contact spring
The arm of force be continually changing, effectively improve the stress of movable contact spring, slow down its fatigue state, extend service life.
The lower end of movable contact block is arranged to inverted trapezoidal or inverted cone by the present invention, and the end of lower end is arranged to arc surfaced, its
The curved end of small end is pressed in the cambered surface of cam, and its advantage is to be beneficial to be contacted with cam face, arc transition
Frictional resistance and the contact pressure of movable contact block and cam contact can be reduced, thus reducing the rotational resistance of cam and reducing cam
Abrasion, simultaneously also be beneficial to movable contact block more flexible moving up and down in the chute of contact box with the rotation of cam.Touching
Setting chute in head cartridge, is to be guided and left and right is spacing to moving up and down of movable contact block, preventing movable contact block from moving
Deflect during dynamic or interfere.
The movable contact spring of the present invention is made using having resilient beryllium-bronze, phosphor bronze or stainless steel material, and stainless at it
Steel material surface is zinc-plated or silver-plated it is well known that copper has the electric conductivity of brilliance, and beryllium-bronze or phosphor bronze are except having copper
Outside the excellent electric conductivity that material possesses, also there is the elastic deformation of brilliance and the performance that automatically resets；Rustless steel has good
Good elastic deformation and recovery capability, but its electric conductivity is more inferior than copper, carries out zinc-plated or silver-plated on stainless steel substrates surface, can protect
It is obviously improved its electric conductivity, that is, the beneficial effect of the technical program is both to can guarantee that on the basis of holding its own favorable elasticity
Movable contact spring has excellent electric conductivity, can guarantee that it has excellent elastic deformation and the performance that automatically resets again.
On the movable contact spring of the present invention with movable contact block in boss contact point, with deformable supports point as starting point, its contact point
Boss contact point shape positioned at its moving contact apart from 0.4 to 0.8 times of deformable supports point length, in its movable contact spring and movable contact block
Become lever construction, this lever with deformable supports point for deform starting point, when movable contact block sticks up under the promotion of cam up or down
During dynamic movable contact spring, because the contact point of itself and boss is located at the middle part between deformable supports point and moving contact, then movable contact spring is another
The moving contact at end rises or falls 1.25 to 2.5 times that distance is exactly movable contact block and moves up or down distance, and that is, sound is touched
Head combines and detached speed is 1.25 to 2.5 times of cam contour pace of change, it is, of course, preferable to value be will on movable contact spring with move
Boss contact point in contact base, is arranged on the point midway between moving contact and deformable supports point, and now, dynamic/static contact combines
And detached speed is 2 times of cam contour pace of change, that is, fast again than the separating rate of prior art it is well known that opening
The arc time closed is directly related with the separating rate of sound contact, and speed is faster, and the arc time is shorter, not even arcing, that is,
The beneficial effect of the technical program is the arc time substantially reducing between sound contact, drastically reduce the area the galvano-cautery of contact
Degree, extends the service life of contact, improves the response speed of switch.
Contact pressure after moving contact is contacted by the present invention with static contact arranges and is adjusted to 1 to 2n, is through repeatedly real
Checking, the optimum pressure value that this contact pressure value combines for dynamic/static contact, as excessive in contact pressure, easily aggravate the mill of contact
Damage；As contact pressure is too small, then contact resistance increases, and can cause to generate heat, or even the problem of virtual connection.
The radial difference of cam outline is set as 1.2 to 3 millimeters by the present invention, is also to have passed through many experiments checking,
This radial difference coordinates the movable contact spring structure of lever principle, can allow auxiliary switch quick response, realizes instantaneously cut-offfing；Again can be real
Show being sufficiently separated and effectively combining of sound contact, this radial difference is better than the semidiameter of prior art cam outline simultaneously
Value, the radius drop of its cam outline is less, and rotary resistance is less, and abrasion is also less, and response speed is faster.
The present invention near the position of stationary contact, is provided with magnet steel, the action of a magnetic field direction of its magnet steel is to make in contact box
The direction that electric arc moves towards moving contact is moved, and its advantage is: the magnetic field energy that magnet steel produces by between sound contact because relatively
High current disjunction and issuable electric arc elongate, and accelerate arc extinction, improve connecting-disconnecting function and the reliability of auxiliary switch.
Magnet steel is assembled to the placement in the hole near the setting of the position of stationary contact in contact box in friction tight mode, is for the ease of life
Produce and assemble, and friction tight mounting means also can guarantee that magnet steel is difficult in use.
The present invention at the contact box back side, is provided with the sealing strip of projection, in the corresponding site in contact box front, be provided with
The seal groove matching, the raised seals bar at the upper layer of contact box back side can stick in lower layer of contact box seal groove, be for
Guarantee adjacent contact case assembly enables to seal, preventing dust and water droplet to be immersed in the cavity of contact box after assembly
And cause the electric fault of auxiliary switch.
The present invention lift limiting block is arranged on the left of movable contact block or the contact box cavity on right side in, its effect and effect
All similar, lift limiting block is arranged in the contact box cavity between movable contact block and moving contact, its spacing contact site is just
On the movable contact spring of moving contact one end, when lift limiting block is arranged on opposite side, its spacing contact site be located in away from
On the other end movable contact spring of moving contact, but its effect and effect be all limit movable contact spring excessive stick up liter, in case stop contact end
The moving contact in portion sticks up rise too high and the cavity wall that touches contact box, and prevent movable contact spring stick up rise excessively and to reduce its elasticity multiple
Position performance.Lift limiting block is made using insulant and is to ensure that the electric property of auxiliary switch is unaffected, to be molded
Or lift limiting block and contact box are formed one by the mode of clamp, be for the ease of producing and processing, by lift limiting block with
The position setting of movable contact spring contact is ramp-like, is in order to the inclined-plane being formed after sticking up liter with movable contact spring is matched.
The cavity placing termination on contact box is arranged to teapot shape by the present invention, and its spout position opens up the oblique of arc
Groove, its advantage be in order to accommodate instrument by the afterbody of movable contact spring carry out bend deformation operation, that is, the technical program be in order to
Be conducive to the needs of technological operation.
The present invention is additionally provided with return spring holder between movable contact block and back-moving spring, and described back-moving spring passes through to reset
Spring base and be pressed on the middle part of movable contact spring, be to increase the reliability that back-moving spring contacted with movable contact spring it is clear that by multiple
The face contact that position spring base is realized directly compresses the linear contact lay of formation better than back-moving spring.
Auxiliary switch of the present invention, its contact case assembly is provided with multilamellar altogether, is to be realized by a switch
Various control function, each layer of contact case assembly all can form two independent electric loops.In each layer of contact case assembly
The raised locating dowel of front setting, the location hole that back side setting matches therewith, is to allow the raised locating dowel of lower layer of contact box
Can fasten and position in the hole accordingly into upper layer of contact box, to realize precise positioning and the company of consolidating of the assembling of multilamellar contact case assembly
Connect, certainly, described locating dowel all can achieve this function using cylinder, elliptical cylinder-shape, Pedicellus et Pericarpium Trapae cylindricality or inverted cone.
The moving contact of the present invention and static contact are all using silver-nickel slider material, and contact surface is done gold-plated process,
It is to strengthen the electric conductivity between contact, reducing its contact resistance, in the way of riveting or welding, contact is fixed on dynamic touching
On piece or static contact, it is in order that contact firmly forms one with movable contact spring and static contact, to prevent it in the course of the work
Come off.
Brief description
With specific embodiment, the present invention is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of double breaking points bridge-type auxiliary switch of the prior art.
Fig. 2 is the structure chart of the contact case assembly in single-break quick action type auxiliary switch of the present invention.
Fig. 3 is the location diagram of the movable contact spring in the present invention and movable contact block and return spring holder.
Fig. 4 is the structure chart at the contact box back side in the present invention.
Fig. 5 is the overall structure figure of the present invention.
In figure: the movable contact block of 1 ＇ prior art；The dynamic/static contact of 2 ＇ prior arts；The side of 3 ＇ prior arts
Axle；The cam of 4 ＇ prior arts；F1 prior art cam is applied to the side force of movable contact block；
1 square shaft；2 pull bars；3 front shrouds；4 baffle plates；5 contact case assemblies；6 contact boxs；7 back shrouds；
8 movable contact springs；8a moving contact；9 screws；10 static contacts；10a static contact；11 terminations；12 cams；
R1 cam path；The big footpath of r2 cam；13 movable contact blocks；13a boss；14 back-moving springs；15 return spring holders；
20 magnet steel；601 lift limiting blocks (601)；602 heavy platforms；603 locating dowels；604 magnet steel putting holes；605 is convex
Platform sealing strip；607 location holes；610 seal grooves；X deformable supports point；B skewed slot；C chute.
Specific embodiments
As shown in Figures 2 to 5, the first specific embodiment of the present invention is, a kind of single-break quick action type auxiliary switch,
It includes square shaft 1, pull bar 2, front shroud 3, back shroud 7 and multilamellar contact case assembly 5, in the head and the tail two of multilamellar contact case assembly 5
End is respectively provided with a baffle plate 4 respectively, and square shaft 1 runs through each layer contact case assembly 5, by two pull bars 2 by each layer contact case assembly 5
Tension is integral, forms auxiliary switch.
Contact case assembly 5 include contact box 6 and the cam 12 being arranged in contact box 6 cavity, movable contact spring 8, static contact 10,
Termination 11, movable contact block 13, back-moving spring 14 and return spring holder 15, square shaft 1 pierces in the square hole at cam 12 middle part, its
Cam 12 is controlled 1.2 to 3 using the disc cam with semidiameter, the radial difference of its cam big footpath r2 and cam path r1
Between millimeter preferably, present embodiment adopts 2 millimeters of radial difference.The lower end of movable contact block 13 is arranged to inverted trapezoidal, also may be used
Setting is in an inverted cone, and the end of lower end becomes arc surfaced, and the curved end of its small end is pressed in the cambered surface of cam 12；In contact box
It is provided with chute c, movable contact block 13 can move up and down in the chute c of contact box 6 in 6.
The groove installing movable contact spring 8 is offered on movable contact block 13, back-moving spring 14 is pacified by return spring holder 15
It is contained in the groove of movable contact block 13, movable contact spring 8 is made using having resilient beryllium-bronze material, and certainly, movable contact spring 8 is acceptable
Made using the resilient phosphor bronze of tool or stainless steel material, or other have the metal material of favorable elasticity and electric conductivity,
When movable contact spring 8 is made using stainless steel material, for improving the electric conductivity of movable contact spring 8, should in stainless plating zinc on surface or
Silver-plated.The original shape of movable contact spring 8 be in flat, its position contacting with termination 11 and with arrange moving contact 10a portion
Position keeping parallelism, after it occurs elastic deformation, the movable contact spring 8 itself that its shell fragment material makes will produce one and automatically reset
Elastic force, to make every effort to recover its straightened condition, be fixed with moving contact 8a in the way of riveting or welding in one end of movable contact spring 8,
The other end of movable contact spring 8 is pressed in termination 11 through termination 11 and by screw 9, other end termination 11
Interior compression static contact 10, is fixed with, in one end of static contact 10, the static contact matching with moving contact 8a in the way of riveting or welding
10a, moving contact 8a and static contact 10a are all made using silver-nickel slider material, and contact surface are done gold-plated process, to carry
Its electric conductivity high, reduces its contact resistance.
The present embodiment is provided with boss 13a in the groove of movable contact block 13, and the end of its boss 13a is that semicircle is spherical
Arcuate structure, movable contact spring 8 is passed through the groove of movable contact block 13 and be stuck in return spring holder 15 and movable contact block boss 13a it
Between, the end of its boss 13a adopts the spherical arcuate structure of semicircle, can allow movable contact spring 8 stick up rise and reseting procedure in, its with dynamic
The contact point of the boss 13a in contact base constantly changes, to improve the wear resistance of movable contact block 13, it is to avoid dynamic touch
Piece 8 compresses a fixing point on boss 13a for a long time and allows the boss 13a unstable wear of movable contact block shorten its life-span, with
When, the boss 13a of the spherical arcuate structure of semicircle, moreover it is possible to allow the arm of force of movable contact spring 8 to be continually changing, effectively improves movable contact spring 8
Stress, alleviate its fatigue state, extend its service life.On movable contact spring 8 with movable contact block in boss 13a
Contact point, with deformable supports point x as starting point, its contact point be located at its moving contact 8a apart from deformable supports point x length 0.4 to
0.8 times is preferred, and its contact point is arranged on the point midway between moving contact 8a and deformable supports point x, this reality by present embodiment
Apply in mode, movable contact spring 8 can form lever construction with the contact point of movable contact block inner convex platform 13a, and this lever is with deformable supports point x
For sticking up a liter starting point, when movable contact block 13 tilting movable contact spring 8 up or down under the promotion of cam 12, due to itself and boss
The contact point of 13a is located at the middle part between its deformable supports point x and moving contact 8a, then on the moving contact 8a of movable contact spring 8 other end
Rise or dropping distance is exactly that movable contact block 13 moves up or down distance 1.25 to 2.5 times, that is, dynamic/static contact combine and point
From speed be 1.25 to 2.5 times of cam contour pace of change, present embodiment by movable contact spring with movable contact block inner convex platform
The contact point of 13a is arranged on the point midway between moving contact 8a and deformable supports point x, and now, dynamic/static contact combines and separates
Speed be 2 times of cam contour pace of change, that is, fast again than the separating rate of prior art.
When movable contact block 13 moves to the direction of close square shaft 1 with the rotation of cam 12, movable contact spring 8 is in reset itself
Under the dual function of elastic force and return spring pressure, the moving contact 8a of movable contact spring 8 one end is just driven to move to static contact 10a direction
And be finally pressed on the static contact 10a of static contact 10；In present embodiment, after moving contact 8a is contacted with static contact 10a, it connects
Touch pressure is set as 1 to 2n.
When movable contact block 13 moves to the direction away from square shaft 1 with the rotation of cam 12, movable contact spring 8 is in movable contact block
Under the lift-up pressure of arc boss 13a in 13, just with the deformable supports point x at its termination 11 end as fulcrum, tilt dynamic touching
The moving contact 8a of piece 8 other end, rapid drive moving contact 8a sticks up completely from static contact 10a.
Present embodiment is provided with lift limiting block 601 in contact box 6, and lift limiting block 601 is arranged on movable contact block
In contact box cavity between 13 and termination 11, and form one with contact box 6 by the way of injection, its lift is spacing
Gear 601 is made by fire retardant insulating plastic material nylon pa66 or Merlon pc material with contact box 6, lift limiting block 601
Can be arranged in movable contact block 13 left side or the contact box cavity on right side, lift limiting block 601 is arranged on by present embodiment
In the contact box cavity on movable contact block 13 right side, that is, it is arranged on the contact box cavity between movable contact block 13 and deformable supports point x
Interior, when movable contact spring 8 is under the lift-up pressure of movable contact block inner convex platform 13a, with the deformable supports point x at termination 11 end for
Point, stick up rise movable contact spring 8 other end moving contact 8a when, lift limiting block 601 can be after moving contact 8a sticks up and rises to certain distance
It is pressed against sticking up the movable contact spring 8 during rising, in case the moving contact 8a of stop contact end sticks up the too high of liter and touches contact box 6
Cavity wall, and prevent from movable contact spring 8 from sticking up rising excessively and reduce its elastic reset performance, lift limiting block 601 is contacted with movable contact spring 8
Position is in ramped shaped, and the inclined-plane being formed after sticking up liter with movable contact spring 8 is matched.
Present embodiment is also provided with heavy platform 602 in contact box 6, and the shape of its heavy platform 602 adopts square column type or wedge
Shape is advisable, and present embodiment uses the heavy platform of wedge shape, and heavy platform 602 is arranged on the tail that movable contact spring 8 is connected with termination 11
Portion, and form one with contact box 6, heavy platform 602 forms a skewed slot b with the cavity inner wall of contact box 6, and one end of movable contact spring 8 is worn
After crossing termination 11, the afterbody of movable contact spring 8 is carried out bending and deforms ramp-like and be clamped on heavy platform 602 and contact box cavity wall
In the skewed slot b constituting, can prevent movable contact spring 8 from moving left and right and positioning in the course of the work, thus avoiding because movable contact spring 8
Left and right play and allow the joint of dynamic/static contact that error occurs.In order to be able to accommodate bending operation instrument (generally using be cut bottle opener make
For bending tool) afterbody of movable contact spring 8 is carried out bending deformation operation, present embodiment also will place wiring dress on contact box 6
The cavity putting 11 has been arranged to teapot shape, opens up the skewed slot b of arc at its spout position.
Present embodiment near the position of stationary contact 10a, is provided with magnet steel putting hole 604, in this magnetic also in contact box 6
In steel putting hole 604, magnet steel 20 is provided with friction tight mode, the shape of its magnet steel 20 can be cylindrical, square column type or
Tile shape, present embodiment adopts square column type magnet steel, and the action of a magnetic field direction of its magnet steel 20 is so that electric arc is transported towards moving contact 8a
Dynamic direction is moved, the magnetic field energy that its magnet steel 20 produces by between sound contact because of larger current disjunction issuable electric arc
Elongate, accelerate arc extinction, improve breaking capacity and the reliability of auxiliary switch.
Present embodiment, at contact box 6 back side, is provided with the sealing strip 605 of projection, in the corresponding portion in contact box 6 front
Position, is provided with the seal groove 610 matching therewith, after multilamellar contact case assembly 5 is assembled together, raised on its upper strata contact box 6
Sealing strip 605 can stick in the seal groove 610 of lower layer of contact box 6, to prevent dust and water droplet from invading the chamber in contact box 6 front
In vivo.Present embodiment is also provided with the locating dowel 603 of projection in the front of each layer of contact box 6 simultaneously, and its locating dowel 603 can
So that using cylinder, elliptical cylinder-shape, Pedicellus et Pericarpium Trapae cylindricality or inverted cone, using cylinder, the back side is provided with and matches therewith present embodiment
Location hole 607, when by multilamellar contact case assembly 5 be assembled together formation auxiliary switch after, the positioning of lower layer of contact box 6 projection
Post 603 can fasten in the corresponding location hole 607 of upper layer of contact box 6, to realize the precise positioning of multilamellar contact case assembly 5 assembling
With firm connection.
Auxiliary switch of the present invention, its contact case assembly 5 is provided with multilamellar altogether, is to be realized by a switch
Various control function, each layer of contact case assembly 5 all can form two independent electric loops.An electric loop is arranged
There is a moving contacting plate being made up of elastic metallic material 8, the contact point shape of the boss 13a in its movable contact spring 8 and movable contact block
Become lever construction, improve separating rate and the separating distance of sound contact, therefore the breaking capacity of switch strengthens.And the present invention exists
One moving contact 8a is only provided with moving contacting plate 8, that is, the present invention is only provided with a pair of sound contact in an electric loop,
Switch on-off and only completed by a pair of contact, life-time service is also not in the phenomenon of virtual connection, compared with prior art, it is to avoid
Prior art easily leads to arcing, scaling loss to be touched because the contact of two pairs of contacts is asynchronous, separately asynchronous using two pairs of contacts
Head and the problem of virtual connection, improve the electric property of auxiliary switch and the reliability of disjunction；And decrease amount of parts, reduce
Small product size, has saved the installing space of auxiliary switch.
Above-described be only presently preferred embodiments of the present invention, be not limited to present disclosure, every
Any modification, equivalent and improvement of being made within the spirit and principles in the present invention etc., should be included in the protection of the present invention
Within the scope of.
Claims (7)
1. a kind of single-break quick action type auxiliary switch, including square shaft (1), pull bar (2) and contact case assembly (5), its contact box group
Part (5) includes contact box (6) and the cam (12) being arranged in contact box (6), movable contact spring (8), static contact (10), termination
(11), movable contact block (13) and back-moving spring (14), open up fluted on movable contact block (13), and back-moving spring (14) is arranged on
In the groove of movable contact block (13), movable contact spring (8) is that have resilient sheet metal, and one end of movable contact spring (8) is provided with dynamic touching
Head (8a), the other end of movable contact spring (8) is passed through termination (11) and is pressed in termination (11), in static contact (10)
One end be provided with the static contact (10a) matching with moving contact (8a)；It is provided with boss in the groove of movable contact block (13)
(13a) it is characterised in that: the end of described boss (13a) is the spherical arcuate structure of semicircle, and movable contact spring (8) is passed through dynamic touching
The groove of headstock (13) is simultaneously pressed on the boss (13a) of movable contact block (13), when movable contact block (13) is with the rotation of cam (12)
And to when moving in the direction of close square shaft (1), movable contact spring (8) is in the dual work of reset itself elastic force and back-moving spring (14) pressure
With under, just drive the moving contact (8a) of movable contact spring (8) one end mobile and be finally pressed on static contact to static contact (10a) direction
(10) on static contact (10a)；When movable contact block (13) moves to the direction away from square shaft (1) with the rotation of cam (12)
When, movable contact spring (8) under the lift-up pressure of movable contact block (13) inner convex platform (13a), just with the deformable supports at its termination end
Point is (x) fulcrum, sticks up the moving contact (8a) rising movable contact spring (8) other end, and drives moving contact (8a) to stick up completely from static contact
(10a)；It is provided with lift limiting block (601) in described contact box (6), lift limiting block (601) is arranged on movable contact block
(13) in the contact box cavity and termination (11) between, when movable contact spring (8) is on the top of movable contact block (13) inner convex platform (13a)
Rise under pressure, with the deformable supports point at termination end (x) as fulcrum, stick up the moving contact (8a) rising movable contact spring (8) other end
When, lift limiting block (601) can be pressed against sticking up the movable contact spring (8) during rising after moving contact (8a) sticks up and rise to certain distance；
It is provided with heavy platform (602) in contact box (6), the shape of this heavy platform (602) adopts square column type or wedge shape, and heavy platform (602) sets
Put the afterbody being connected with termination (11) in movable contact spring (8), and form one, heavy platform (602) and contact box with contact box (6)
(6) cavity inner wall forms a skewed slot (b), after one end of movable contact spring (8) passes through termination (11), by the tail of movable contact spring (8)
Portion carries out bending and deforms ramp-like and be clamped in the skewed slot (b) that heavy platform (602) and contact box (6) cavity wall are constituted；Contact box
(6) the upper cavity placing termination (11) is in teapot shape, opens up the skewed slot (b) of arc, described teapot shape at its spout position
Cavity can accommodate instrument by the afterbody of movable contact spring (8) carry out bend deformation operation.
2. a kind of single-break quick action type auxiliary switch according to claim 1 it is characterised in that: described lift limiting block
(601) it is arranged on the left of movable contact block (13) or in contact box (6) cavity on right side, lift limiting block (601) adopts insulation material
Material makes, and forms one with contact box (6), its lift limiting block (601) is contacted with movable contact spring (8) in the way of injection or clamp
Position be in ramped shaped, and with movable contact spring (8) stick up rise after formed inclined-plane match.
3. a kind of single-break quick action type auxiliary switch according to claim 1 it is characterised in that: movable contact spring (8) is upper and dynamic
The contact point of contact base inner convex platform (13a), with deformable supports point (x) as starting point, its contact point is located at its moving contact (8a) distance
0.4 to 0.8 times of deformable supports point (x) length.
4. a kind of single-break quick action type auxiliary switch according to claim 3 it is characterised in that: movable contact spring (8) is upper and dynamic
The contact point of contact base inner convex platform (13a), be arranged on moving contact (8a) and deformable supports point (x) between point midway.
5. a kind of single-break quick action type auxiliary switch according to any one of claim 1 to 4 it is characterised in that: dynamic touch
After head (8a) is contacted with static contact (10a), its contact pressure is 1 to 2n.
6. a kind of single-break quick action type auxiliary switch according to any one of claim 1 to 4 it is characterised in that: cam
(12) radial difference of outline is 1.2 to 3 millimeters.
7. a kind of single-break quick action type auxiliary switch according to any one of claim 1 to 4 it is characterised in that: described
Movable contact spring (8) is by having resilient beryllium-bronze, phosphor bronze or stainless steel material are made, and its surface of stainless steel zinc-plated or
Silver-plated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410531238.7A CN104319146B (en) | 2014-10-11 | 2014-10-11 | Single breakpoint quick-action assistant switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410531238.7A CN104319146B (en) | 2014-10-11 | 2014-10-11 | Single breakpoint quick-action assistant switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104319146A CN104319146A (en) | 2015-01-28 |
| CN104319146B true CN104319146B (en) | 2017-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410531238.7A Active CN104319146B (en) | 2014-10-11 | 2014-10-11 | Single breakpoint quick-action assistant switch |
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| Country | Link |
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| CN (1) | CN104319146B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA3081661C (en) * | 2017-11-22 | 2023-05-09 | Oetiker Ny, Inc. | Technologies for verifying a fluid connection |
| CN108987147B (en) * | 2018-09-17 | 2023-12-15 | 北京博瑞莱智能科技集团有限公司 | Voltage regulating switch device and voltage regulating transformer |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE504868A (en) * | 1955-01-11 | |||
| US3836742A (en) * | 1973-07-02 | 1974-09-17 | Lake Shore Electric Corp | Switch with peripheral cam actuator |
| CN201252032Y (en) * | 2008-09-26 | 2009-06-03 | 成都瑞联电气股份有限公司 | Split-level type auxiliary switch |
| CN201438434U (en) * | 2009-06-11 | 2010-04-14 | 台州市轩业电气设备有限公司 | Multi-contact travel switch |
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2014
- 2014-10-11 CN CN201410531238.7A patent/CN104319146B/en active Active
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| CN104319146A (en) | 2015-01-28 |
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