CN106783250B - A kind of cam switch - Google Patents
A kind of cam switch Download PDFInfo
- Publication number
- CN106783250B CN106783250B CN201611227742.3A CN201611227742A CN106783250B CN 106783250 B CN106783250 B CN 106783250B CN 201611227742 A CN201611227742 A CN 201611227742A CN 106783250 B CN106783250 B CN 106783250B
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- Prior art keywords
- cam
- movable contact
- diving board
- driving member
- contact
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
- H01H3/16—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. for a door switch, a limit switch, a floor-levelling switch of a lift
- H01H3/161—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. for a door switch, a limit switch, a floor-levelling switch of a lift for actuation by moving a closing member, e.g. door, cover or lid
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/02—Contacts characterised by the material thereof
- H01H1/021—Composite material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
- H01H3/42—Driving mechanisms, i.e. for transmitting driving force to the contacts using cam or eccentric
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- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Conductive Materials (AREA)
- Contacts (AREA)
Abstract
The present invention provides a kind of cam switches, belong to opening or closing of elevator door lock.Cam switch of the present invention includes fixed seat, driving member, cam, movable contact diving board；Wherein, driving member is equipped with above fixed seat, the driving member and fixed seat riveting axis connection, and driving member can be dynamic around riveting shaft rotation, when by right cam bruising certain position, it is electrically connected so that with the first contact shoe touching formula occurs for movable contact diving board right end, so that the control circuit work of the cam switch, when cam switch resets, need the left cam of bruising so that movable contact diving board and the first contact shoe are detached from, and the control circuit of cam switch is stopped, so that the cam switch has more stability, and then preferably evade elevator safety accident.And movable contact diving board is made up using the rational aluminium alloy of compatibility and of the casting technique in six stages, further increases its conductivity and mechanical property, especially increases substantially the intensity of movable contact diving board, and then improve the service life of cam switch.
Description
Technical field
The invention belongs to opening or closing of elevator door lock, are related to a kind of cam switch.
Background technology
Travel switch is a kind of common low current master control electrical apparatus, is to make it using the collision of manufacturing machine moving component
Contact action realizes connection or disjunction control circuit, reaches certain control purpose.
Cam switch is the one kind for belonging to travel switch, and such travel switch is to be used to limit mechanical in use
The position of movement or stroke, so that movable machinery is automatically stopped by certain position or stroke, counter motion, variable motion or automatic past
Return movement etc., therefore, most of such travel switch be for the product with mechanical movement, in particular on elevator, and
In the prior art, most travel switch is that single-wheel restores formula travel switch automatically, is the collision block pressure with movable machinery
When on to the idler wheel of travel switch, transmission bar rotates together together with shaft, when collision block by idler wheel bruising to certain position when, be used for
The control circuit start-up operation that the single-wheel restores formula travel switch automatically is controlled, after collision block is removed, resetting spring just makes single-wheel
The automatic formula travel switch that restores resets, if resetting spring because of usage time too long or standing time is long, and cause it automatic
Telescopic weakens so that the single-wheel restores formula travel switch and is unable to normal reset automatically, breaks down so as to cause product, especially
It is that such travel switch is installed on elevator, may result in elevator cisco unity malfunction, and then elevator is allowed to cause danger thing
Therefore.
Invention content
The purpose of the present invention is there is the above problem in view of the prior art, it is proposed that one kind is simple in structure, stability is good
Cam switch.
Object of the invention can be realized by the following technical scheme：A kind of cam switch, including：
Fixed seat, the fixed seat left side top are equipped with riveting axis, and fixed seat right end is equipped with the first contact shoe；
Driving member, the driving member are set to above the fixed seat, the driving member and fixed seat riveting axis connection, and are passed
Moving part can be dynamic around riveting shaft rotation；
Cam, the cam are set at the top of driving member, and cam is rotatablely connected with driving member；
Movable contact diving board, through driving member right end, which is fixedly arranged on described the movable contact diving board
Fixed seat left end, movable contact diving board right end is electrically connected with the first contact shoe touching formula, and movable contact diving board is conductive.
The movable contact diving board is made of the aluminium alloy of high conductivity, the aluminium alloy include Fe0.2-0.6%,
Si1.8-2.5%, Cu0.05-0.12%, Mg0.1-0.25%, Zn0.12-0.22%, Ti0.005-0.015%, B0.08-
0.15%, Zr0.08-0.15%, V0.005-0.012%, surplus are Al and inevitable impurity.
Al alloys of the present invention are Al-Mg-Si-Cu-Fe based alloys, although the addition of Mg can reduce conductivity, Mg exists
In alloy with a large amount of Mg of base aluminum Element generation5Al phases, and whole Mg can be made by heat treatment5Al phases are dissolved into alloy matrix aluminum α
Xiang Zhong so that there is alloy higher intensity and excellent mechanical property especially to be used while Mg is with Si, Zn, Mg and Si
Form Mg2Si hardening constituents, Mg and Zn form MgZn2 hardening constituents, hence it is evident that increase tensile strength and yield strength, and Si and Al can shape
It is the main component for improving aluminium alloy casting fluidity at Al+Si eutectic liquid phases.Similarly, although Cu can cause conductivity small
Width reduces, but adds suitable Cu, Mg, can enhance the disperse degree of particle, enhance the intensity of the particle of instant precipitated phase,
The interphase η ' of part coherence and the areas G.P of coherence are enhanced significantly, therefore in the base, the phase particle that when timeliness is precipitated is main
It is by the slightly thick areas coherence G.P and tiny η ' phase compositions, and then raising alloy strength, so in movable contact diving board aluminium of the present invention
0.05-0.12%Cu is added in alloy and further increases its intensity while ensureing movable contact diving board electric conductivity.Although crossing
The Si of amount can influence the electric conductivity of alloy, but contain the elements such as Zn, Zr, Ti, V, B, member in movable contact diving board aluminium alloy of the present invention
It will produce various synergistic effects between element, so the present invention substantially increases Si contents, still can further improve alloy
Intensity.The present invention forms Al-Si-Zn-Mg-Cu systems alloy by each basic element, is ensureing movable contact diving board electric conductivity
In the case of, increase substantially the intensity of movable contact diving board.
Fe is impurity in general aluminium alloy, even if containing Fe in pack alloy, in order to be conducive to demould, the content of Fe is general
Metallic compound can be generated higher than 1.2% because being unfavorable for demoulding less than 0.7% for 0.8-1.0%, formed hard spot, reduced and close
Golden mobility damages product quality, shortens life of product.However 0.2- is added in movable contact diving board aluminium alloy of the present invention plus only
0.6%, it crystallizes or is precipitated using the form of the intermetallic compounds such as Al-Fe, Al-Fe-Si, the crystal or precipitate are as knot
The miniaturization material of crystal grain and play a role, intensity and mechanical property are improved while ensureing conductivity.In contact bullet of the present invention
If the content of Fe is more than 0.7% in plate aluminum alloy, the conductivity of alloy can be seriously affected.
Cr, Mn are not contained in movable contact diving board aluminium alloy of the present invention, containing Zr, Ti, V, B, by being generated between each element
Synergistic effect, crystal grain thinning further increases the intensity of alloy.Wherein, Zr and Al forms ZrAl3Compound can hinder
Recrystallization process refines recrystal grain, refines cast sturcture, and Ti and B while adds, Ti and Al formation TiAl2Phase becomes
Heterogeneous necleus when crystallization plays a part of to refine cast sturcture and seam organization.Although can be only containing one in Zr, Ti, V, B
Kind is several, but the present invention while the element containing there are four types of, and the effect of refinement crystal structure is made to be enhanced.
Preferably, the mass ratio of Mg and Si meets 0.05≤Mg/Si≤0.1 in movable contact diving board aluminium alloy of the present invention.
Because being made by the collaboration between each element simultaneously added with suitable Zr, Ti, B, V in movable contact diving board aluminium alloy of the present invention
With improve aluminium alloy conductivity and intensity, so in movable contact diving board aluminium alloy of the present invention when Mg/Si be less than 0.05 when, then
Mg, which can not be played, can improve the effect of intensity, and when Mg/Si is more than 0.1, then conductivity will be caused to be greatly reduced.
Preferably, in movable contact diving board aluminium alloy of the present invention Ti, B, Zr, V summation≤0.3%.
Preferably, the conductivity of movable contact diving board aluminium alloy of the present invention is more than 63%IACS.
Preferably, movable contact diving board Aluminum alloy tensile intensity of the present invention is 150-220MPa.
Preferably, movable contact diving board of the present invention is molded by low pressure casting, specially：By aluminium alloy solution by directly pouring
Road injects in mold, and injection pressure gradually rises to 0.32MPa, is then down to 0MPa, it is movable contact diving board that demoulding, which is taken out,.
Further preferably, rise and decline process and be divided into following several stages：
Rise the liquid stage：The liquid stage is risen in preceding 15s, relative pressure rises to 0.08MPa from 0MPa；
Fill the type stage：The type stage is filled in 15-35s, and relative pressure rises to 0.12MPa from 0.08MPa；
The crust stage：For crust in 35-50s, relative pressure rises to 0.18MPa from 0.12MPa；
Pressurization stages：For crust in 50-70s, relative pressure rises to 0.32MPa from 0.18MPa；
Pressurize crystallization stage：For pressurize crystallization stage in 20-250s, relative pressure is maintained at 0.32MPa；
The release stage：The release stage, relative pressure dropped to 0MPa from 0.32MPa in 250-350s.
The dense structure's property that movable contact diving board is further increased by the casting technique in six stages, further increases movable contact
The conductivity and mechanical property of diving board.
In a kind of above-mentioned cam switch, the cam includes left cam, right cam, and the left cam is set to driving member
Top left side, and left cam is rotatablely connected with driving member, the right cam is set to driving member top right side, and right cam and transmission
Part is rotatablely connected.
In a kind of above-mentioned cam switch, the driving member top left side is equipped with the left riveting for installing left cam
Axis, and left cam can be dynamic around left riveting shaft rotation, driving member top right side is equipped with the right riveting axis for installing right cam, and right convex
Wheel can be dynamic around right riveting shaft rotation.
In a kind of above-mentioned cam switch, the movable contact diving board right end is installed with movable contact, movable contact diving board upper end
Equipped with the pressing plate for making movable contact diving board that there is the trend that moves downward.
In a kind of above-mentioned cam switch, first contact shoe upper end is equipped with the stationary contact of corresponding movable contact, and dynamic
Contact is electrically connected with stationary contact point touch formula, and the first contact shoe lower end is equipped with pressure block.
In a kind of above-mentioned cam switch, the fixed seat right end is additionally provided with the second contact shoe and spring base, described
Second contact shoe is located on the left of the first contact shoe, and the second contact shoe is electrically connected with movable contact diving board left end, the spring seat
Between the first contact shoe and the second contact shoe, and at least two springs are equipped between spring base and the driving member.
In a kind of above-mentioned cam switch, first contact shoe bottom end is equipped with the first pan head screw, first disk
Head screw is electrically connected with the first contact shoe contact, and second contact shoe lower end is equipped with the second pan head screw, second disk
Head screw is electrically connected with the second contact shoe contact.
In a kind of above-mentioned cam switch, driving member left end bottom is equipped with bolt, the fixed seat left end top
Equipped with the nut for nested bolt, the central shaft of the bolt is Chong Die with the central shaft of nut, and above and below bolt opposing nut
It is mobile.
In a kind of above-mentioned cam switch, translucent cover, the translucent cover and fixed seat spiral shell are equipped with outside the fixed seat
Line connects.
Compared with prior art, the invention has the advantages that：
1, in the present invention, it is equipped with driving member, the driving member and fixed seat riveting axis connection above fixed seat, and is driven
Part can be dynamic around riveting shaft rotation, when by right cam bruising certain position so that movable contact diving board right end and the first contact shoe occur to touch
Formula electrical connection is touched, so that the control circuit work of the cam switch needs the left cam of bruising when cam switch resets so that
Movable contact diving board and the first contact shoe are detached from, and the control circuit of cam switch is stopped so that the cam switch is more stablized
Property, and then preferably evade elevator safety accident.
2, it is equipped with spring base between the first contact shoe and the second contact shoe, at least two are equipped between the spring base and driving member
Root spring, when cam switch does resetting movement, spring promotes driving member to reset, so, it is ensured that the movable contact bullet on driving member
Plate is detached from the first contact shoe so that the control circuit of cam switch is stopped, to allow the cam switch to have more stability.
3, movable contact diving board is made up using the rational aluminium alloy of compatibility and of the casting technique in six stages, further increases
Its conductivity and mechanical property especially increase substantially the intensity of movable contact diving board, and then improve the use longevity of cam switch
Life.
Description of the drawings
Fig. 1 is the structural schematic diagram of a preferred embodiment of the present invention.
Fig. 2 is the vertical view of the present invention.
Fig. 3 is the internal structure schematic diagram of the present invention.
Specific implementation mode
Following is a specific embodiment of the present invention in conjunction with the accompanying drawings, technical scheme of the present invention will be further described,
However, the present invention is not limited to these examples.
As shown in Figure 1-Figure 3, a kind of cam switch of the present invention includes fixed seat 100, driving member 400, cam 200, moves and touch
Point diving board 300.
100 left side top of fixed seat is equipped with riveting axis 110, and 100 right end of fixed seat is equipped with the first contact shoe 150；Driving member
400 are set to 100 top of fixed seat, which connect with the riveting axis 110 of fixed seat 100, and driving member 400 can be around riveting
Spindle 110 rotates；Cam 200 includes left cam 210, right cam 220, which is set to 400 top left side of driving member,
And left cam 210 is rotatablely connected with driving member 400, which is set to 400 top right side of driving member, and right cam 220 with
Driving member 400 is rotatablely connected；Movable contact diving board 300 is fixedly arranged on through 400 right end of driving member, 300 left end of movable contact diving board
100 left end of fixed seat, 300 right end of movable contact diving board is electrically connected with the first contact shoe 150 touching formula, and movable contact diving board 300 has
It is conductive；In the course of work of cam switch, the right cam of bruising 220 is needed so that driving member 400 is around riveting 110 up time of axis
Needle rotates, and then allows 300 right end of movable contact diving board that touching formula occurs with the first contact shoe 150 and be electrically connected so that the cam switch
Control circuit work.
400 top left side of driving member is equipped with the left riveting axis 120 for installing left cam 210, and left cam 210 can be around a left side
It rivets axis 120 to rotate, 400 top right side of driving member is equipped with the right riveting axis 130 for installing right cam 220, and right cam 220
It can be rotated around right riveting axis 130, the setting of left riveting axis 120 and right riveting axis 130 so that left cam 210 has with right cam 220
There is flexibility, at work, the right cam of bruising 220 can be such that right cam 220 is rotated around right riveting axis 130, to increase right cam
220 bruising area, reduces the damaged condition of right cam 220 so that the service life of right cam 220 increases, similarly, convex at this
Wheel switch is when doing resetting movement, and the left cam of bruising 210 can be such that left cam 210 is rotated around left riveting axis 120, to increase left cam
210 bruising area, reduces the damaged condition of left cam 210 so that the service life of left cam 210 increases.
300 right end of movable contact diving board is installed with movable contact 310, and 150 upper end of the first contact shoe is equipped with corresponding movable contact 310
Stationary contact 151, and movable contact 310 and stationary contact 151 are touched formula and be electrically connected, touching formula, which is electrically connected, can not only allow the control of cam switch
Circuit normal work processed, also can be such that the control circuit is more flexible, and then the cam switch is allowed to be suitable for wider array of market；It is dynamic
Diving board 300 upper end in contact is equipped with the pressing plate 320 for making movable contact diving board 300 have the trend that moves downward, and during the work time, moves and touches
Point diving board 300 too long or overuses because of usage time, causes movable contact diving board 300 to deform, leads to front contact diving board and first
150 poor contact of contact shoe, and pressing plate 320 can effectively evade the defect so that the work of cam switch has more stability.
First contact shoe, 150 lower end is equipped with pressure block 153, which makes for carrying and fixing stationary contact 151
The multiple touching of movable contact 310 can be sustained by obtaining stationary contact 151, without making the first contact shoe 150 deform, so, it is ensured that this is convex
The control circuit energy steady operation of switch is taken turns, secondly, also reduces the error generated when movable contact 310 is touched with stationary contact 151.
100 right end of fixed seat is additionally provided with the second contact shoe 160, and it is left which is located at the first contact shoe 150
Side, and the second contact shoe 160 is electrically connected with 300 left end of movable contact diving board when work, is touched by movable contact diving board 300 and first
Point seat 150 touches formula electrical connection, and movable contact diving board 300 is conductive, in this way, may make the first contact shoe 150, movable contact
Diving board 300 and the second contact shoe 160 constitute series circuit, to allow the control circuit of cam switch to work normally.
Spring base 170, and spring base 170 and driving member 400 are equipped between first contact shoe 150 and the second contact shoe 160
Between be equipped at least two springs 171, when cam switch does resetting movement, spring 171 promote driving member 400 reset, in this way,
Ensure that the movable contact diving board 300 on driving member 400 is detached from the first contact shoe 150 so that the control circuit of cam switch stops work
Make, to allow the cam switch to have more stability.
First contact shoe, 150 bottom end is equipped with the first pan head screw 152, first pan head screw 152 and the first contact shoe 150
Contact is electrically connected, and 160 lower end of the second contact shoe is equipped with the second pan head screw 161, second pan head screw 161 and the second contact
Control circuit one end of cam switch, when installation, need to be electrically connected, control by seat 160 contacts electrical connection with the first pan head screw 152
The circuit other end processed is electrically connected with the second pan head screw 161, and in work, movable contact diving board 300 and the second contact shoe 160 touch formula
Electrical connection so that the first contact shoe 150, movable contact diving board 300, the second contact shoe 160 and control circuit constitute circuit, to
Cam switch is allowed to work normally.
400 left end bottom of driving member is equipped with bolt 410, and the spiral shell for nested bolt 410 is equipped at the top of 100 left end of fixed seat
Mother 140, the central shaft of the bolt 410 is Chong Die with the central shaft of nut 140, and 410 opposing nut 140 of bolt moves up and down, and
Bolt 410 and 140 clearance fit of nut；When cam switch works, the right cam 220 of bruising is so that 300 right end of movable contact diving board
It moves downward, and 300 left end of movable contact diving board moves upwards, at this point, also opposing nut 140 moves upwards bolt 410, works as cam
When switch does homing action, the left cam 210 of bruising is so that 300 left end of movable contact diving board moves downward, and movable contact diving board 300 is right
End moves upwards, at this point, also opposing nut 140 moves downward bolt 410, and bolt 410 is connected with nut 140 by screw thread
It connects, in this way, when driving member 400 may make to contact fixed seat 100, driving member 400 has buffering effect, and then protects driving member
400 with fixed seat 100.
100 outside of fixed seat is equipped with translucent cover 500, which is threadedly coupled with fixed seat 100, the translucent cover 500
Setting, avoid external dust and enter the inside of cam switch, and then ensure the cam switch energy steady operation.
It is the operation principle of the present invention below：
In the course of work of cam switch, the right cam of bruising 220 so that driving member 400 turns clockwise around riveting axis 110
It is dynamic, and when movable contact diving board 300 and the first contact shoe 150 contact, movable contact 310 occurs touching formula with stationary contact 151 and is electrically connected
It connects so that the first contact shoe 150, movable contact diving board 300, the second contact shoe 160 and control circuit constitute circuit, convex to allow
The control circuit of wheel switch controls elevator.
In the reseting procedure of cam switch, the left cam of bruising 210 so that driving member 400 turns counterclockwise around riveting axis 110
Dynamic, movable contact 310 is separated with stationary contact 151, and movable contact diving board 300 also separates therewith with the first contact shoe 150, meanwhile, spring
Spring 171 on seat 170 has promoted driving member 400 to reset.
In the course of work of cam switch and reseting procedure, when pressing plate 320 is avoided that movable contact diving board 300 because using
Between too long or overuse, cause movable contact diving board 300 to deform；Bolt 410 can make driving member 400 and fixed seat with nut 140
There is buffering effect between 100；The setting of shell is avoided that extraneous dust is flown into cam switch, it is ensured that the cam switch energy
Steady operation.
Movable contact diving board 300 is made of the aluminium alloy of the rational high conductivity of compatibility, below by specific embodiment into one
Walk explanation.
Embodiment 1
The movable contact diving board is made of the aluminium alloy of high conductivity, the aluminium alloy include Fe0.4%,
Si2.0%, Cu0.08%, Mg0.15%, Zn0.15%, Ti0.008%, B0.12%, Zr0.10%, V0.008%, surplus are
Al and inevitable impurity.
Aluminium alloy as described above is melt into solution and is injected in mold by sprue, six stage casting and formings are passed through：
Rise the liquid stage：The liquid stage is risen in preceding 15s, relative pressure rises to 0.08MPa from 0MPa；Fill the type stage：The type stage is filled
In 15-35s, relative pressure rises to 0.12MPa from 0.08MPa；The crust stage：Crust in 35-50s, relative pressure from
0.12MPa rises to 0.18MPa；Pressurization stages：In 50-70s, relative pressure rises to crust from 0.18MPa
0.32MPa；Pressurize crystallization stage：For pressurize crystallization stage in 20-250s, relative pressure is maintained at 0.32MPa；Release rank
Section：The release stage, relative pressure dropped to 0MPa from 0.32MPa in 250-350s；Demoulding is taken out opens up to cam of the present invention
The movable contact diving board in the Central Shanxi Plain.
Embodiment 2
The movable contact diving board is made of the aluminium alloy of high conductivity, the aluminium alloy include Fe0.3%,
Si2.2%, Cu0.06%, Mg0.18%, Zn0.20%, Ti0.01%, B0.1%, Zr0.14%, V0.006%, surplus Al
And inevitable impurity.
Aluminium alloy as described above is melt into solution and is injected in mold by sprue, six stage casting and formings are passed through：
Rise the liquid stage：The liquid stage is risen in preceding 15s, relative pressure rises to 0.08MPa from 0MPa；Fill the type stage：The type stage is filled
In 15-35s, relative pressure rises to 0.12MPa from 0.08MPa；The crust stage：Crust in 35-50s, relative pressure from
0.12MPa rises to 0.18MPa；Pressurization stages：In 50-70s, relative pressure rises to crust from 0.18MPa
0.32MPa；Pressurize crystallization stage：For pressurize crystallization stage in 20-250s, relative pressure is maintained at 0.32MPa；Release rank
Section：The release stage, relative pressure dropped to 0MPa from 0.32MPa in 250-350s；Demoulding is taken out opens up to cam of the present invention
The movable contact diving board in the Central Shanxi Plain.
Embodiment 3
The movable contact diving board is made of the aluminium alloy of high conductivity, the aluminium alloy include Fe0.25%,
Si2.5%, Cu0.05%, Mg0.1%, Zn0.12%, Ti0.015%, B0.08%, Zr0.08%, V0.012%, surplus are
Al and inevitable impurity.
Aluminium alloy as described above is melt into solution and is injected in mold by sprue, six stage casting and formings are passed through：
Rise the liquid stage：The liquid stage is risen in preceding 15s, relative pressure rises to 0.08MPa from 0MPa；Fill the type stage：The type stage is filled
In 15-35s, relative pressure rises to 0.12MPa from 0.08MPa；The crust stage：Crust in 35-50s, relative pressure from
0.12MPa rises to 0.18MPa；Pressurization stages：In 50-70s, relative pressure rises to crust from 0.18MPa
0.32MPa；Pressurize crystallization stage：For pressurize crystallization stage in 20-250s, relative pressure is maintained at 0.32MPa；Release rank
Section：The release stage, relative pressure dropped to 0MPa from 0.32MPa in 250-350s；Demoulding is taken out opens up to cam of the present invention
The movable contact diving board in the Central Shanxi Plain.
Embodiment 4
The movable contact diving board is made of the aluminium alloy of high conductivity, the aluminium alloy include Fe0.6%,
Si1.8%, Cu0.12%, Mg0.25%, Zn0.22%, Ti0.008%, B0.15%, Zr0.15%, V0.012%, surplus are
Al and inevitable impurity.
Aluminium alloy as described above is melt into solution and is injected in mold by sprue, six stage casting and formings are passed through：
Rise the liquid stage：The liquid stage is risen in preceding 15s, relative pressure rises to 0.08MPa from 0MPa；Fill the type stage：The type stage is filled
In 15-35s, relative pressure rises to 0.12MPa from 0.08MPa；The crust stage：Crust in 35-50s, relative pressure from
0.12MPa rises to 0.18MPa；Pressurization stages：In 50-70s, relative pressure rises to crust from 0.18MPa
0.32MPa；Pressurize crystallization stage：For pressurize crystallization stage in 20-250s, relative pressure is maintained at 0.32MPa；Release rank
Section：The release stage, relative pressure dropped to 0MPa from 0.32MPa in 250-350s；Demoulding is taken out opens up to cam of the present invention
The movable contact diving board in the Central Shanxi Plain.
Comparative example 1
Movable contact diving board in cam switch made from common processing methods is passed through using common aluminum alloy in the prior art.
Comparative example 2
The cam switch of six stage casting and formings as described in example 1 above is passed through using common aluminum alloy in the prior art
In movable contact diving board.
Comparative example 3
Movable contact bullet in cam switch made from common processing methods is passed through using aluminium alloy as described in example 1 above
Plate.
Movable contact diving board in embodiment 1-4 and comparative example 1-3 is tested for the property, test result is as shown in table 1.
Table 1：The performance of movable contact diving board in embodiment 1-4 and comparative example 1-3
In conclusion cam switch movable contact diving board of the present invention is using the rational aluminium alloy of compatibility and passes through the casting in six stages
It makes technique to be made, further increases its conductivity and mechanical property, especially increase substantially the intensity of movable contact diving board, in turn
Improve the service life of cam switch.
Specific embodiment described herein is only an example for the spirit of the invention.Technology belonging to the present invention is led
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Claims (10)
1. a kind of cam switch, which is characterized in that including
Fixed seat, the fixed seat left side top are equipped with riveting axis, and fixed seat right end is equipped with the first contact shoe；
Driving member, the driving member are set to above the fixed seat, the driving member and fixed seat riveting axis connection, and driving member
It can be dynamic around riveting shaft rotation；
Cam, the cam are set at the top of driving member, and cam is rotatablely connected with driving member；
Movable contact diving board, the movable contact diving board are fixedly arranged on the fixation through driving member right end, the movable contact diving board left end
Seat left end, movable contact diving board right end is electrically connected with the first contact shoe touching formula, and movable contact diving board is conductive.
2. cam switch according to claim 1, which is characterized in that the movable contact diving board is closed by the aluminium of high conductivity
Gold is made, the aluminium alloy include Fe0.2-0.6%, Si1.8-2.5%, Cu0.05-0.12%, Mg0.1-0.25%,
Zn0.12-0.22%, Ti0.005-0.015%, B0.08-0.15%, Zr0.08-0.15%, V0.005-0.012%, surplus
For Al and inevitable impurity.
3. cam switch according to claim 2, which is characterized in that 0.05≤Mg/Si of mass ratio satisfaction of Mg and Si≤
0.1, Ti, summation≤0.3% of B, Zr, V.
4. cam switch according to claim 2 or 3, which is characterized in that movable contact diving board is molded by low pressure casting, tool
Body is：Aluminium alloy solution to be injected by sprue in mold, injection pressure gradually rises to 0.32MPa, is then down to 0MPa,
It is movable contact diving board that demoulding, which is taken out,.
5. cam switch according to claim 4, which is characterized in that the rising and decline of the relative pressure of movable contact diving board
Process is divided into following several stages：
Rise the liquid stage：The liquid stage is risen in preceding 15s, relative pressure rises to 0.08MPa from 0MPa；
Fill the type stage：The type stage is filled in 15-35s, and relative pressure rises to 0.12MPa from 0.08MPa；
The crust stage：For crust in 35-50s, relative pressure rises to 0.18MPa from 0.12MPa；
Pressurization stages：For crust in 50-70s, relative pressure rises to 0.32MPa from 0.18MPa；
Pressurize crystallization stage：For pressurize crystallization stage in 70-250s, relative pressure is maintained at 0.32MPa；
The release stage：The release stage, relative pressure dropped to 0MPa from 0.32MPa in 250-350s.
6. cam switch according to claim 1, which is characterized in that the cam includes left cam, right cam, the left side
Cam is set to driving member top left side, and left cam is rotatablely connected with driving member, and the right cam is set to driving member top right side,
And right cam is rotatablely connected with driving member.
7. cam switch according to claim 6, which is characterized in that the driving member top left side is equipped with for installing a left side
The left riveting axis of cam, and left cam can be dynamic around left riveting shaft rotation, driving member top right side is equipped with the right side for installing right cam
Axis is riveted, and right cam can be dynamic around right riveting shaft rotation.
8. cam switch according to claim 1, which is characterized in that the movable contact diving board right end is installed with movable contact,
Movable contact diving board upper end is equipped with the pressing plate for making movable contact diving board have the trend that moves downward；First contact shoe upper end be equipped with pair
The stationary contact of movable contact is answered, and movable contact is electrically connected with stationary contact point touch formula, the first contact shoe lower end is equipped with pressure block.
9. cam switch according to claim 1, which is characterized in that the fixed seat right end be additionally provided with the second contact shoe with
And spring base, second contact shoe is located on the left of the first contact shoe, and the second contact shoe is electrically connected with movable contact diving board left end,
The spring base is equipped at least two between the first contact shoe and the second contact shoe between spring base and the driving member
Spring；First contact shoe bottom end is equipped with the first pan head screw, first pan head screw and the first contact shoe contact electricity
Connection, second contact shoe lower end are equipped with the second pan head screw, second pan head screw and the second contact shoe contact electricity
Connection.
10. cam switch according to claim 1, which is characterized in that driving member left end bottom is equipped with bolt, described
The nut for nested bolt is equipped at the top of fixed seat left end, the central shaft of the bolt is Chong Die with the central shaft of nut, and spiral shell
Bolt opposing nut moves up and down；Translucent cover is equipped with outside the fixed seat, the translucent cover is threadedly coupled with fixed seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611227742.3A CN106783250B (en) | 2016-12-27 | 2016-12-27 | A kind of cam switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611227742.3A CN106783250B (en) | 2016-12-27 | 2016-12-27 | A kind of cam switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106783250A CN106783250A (en) | 2017-05-31 |
| CN106783250B true CN106783250B (en) | 2018-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611227742.3A Active CN106783250B (en) | 2016-12-27 | 2016-12-27 | A kind of cam switch |
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| CN (1) | CN106783250B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5937618A (en) * | 1982-08-25 | 1984-03-01 | 株式会社日立製作所 | Structure of switch |
| CN2084653U (en) * | 1991-01-04 | 1991-09-11 | 李玉海 | General position switch |
| CN2146777Y (en) * | 1993-01-20 | 1993-11-17 | 黄培植 | High-capacity universal overtravel-limit switch |
| DE19834432A1 (en) * | 1998-07-30 | 2000-02-10 | Fuss Fritz Gmbh & Co | Device for the selective transmission of energy between two transmission units |
| CN202523585U (en) * | 2012-03-21 | 2012-11-07 | 俞志华 | Stroke switch |
| CN202585158U (en) * | 2012-04-18 | 2012-12-05 | 宁波市鄞州利搏机械有限公司 | Limit switch |
| CN203165679U (en) * | 2013-04-08 | 2013-08-28 | 西安开天铁路电气股份有限公司 | Auxiliary contact with adjustable opening travel |
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2016
- 2016-12-27 CN CN201611227742.3A patent/CN106783250B/en active Active
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| CN106783250A (en) | 2017-05-31 |
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