CN207097726U - A kind of reliable D.C. high-current appliance switch - Google Patents
A kind of reliable D.C. high-current appliance switch Download PDFInfo
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- CN207097726U CN207097726U CN201720736723.7U CN201720736723U CN207097726U CN 207097726 U CN207097726 U CN 207097726U CN 201720736723 U CN201720736723 U CN 201720736723U CN 207097726 U CN207097726 U CN 207097726U
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- static contact
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- spring
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Abstract
The utility model discloses a kind of reliable D.C. high-current appliance switch, including depression bar assembly, plunger, upper lid, shell, F springs, movable contact spring component and static contact component；The movable contact spring component includes moving contact and movable contact spring；The static contact component is split modular structure, and the static contact component includes static contact, static contact two and static contact one；The upper right side of static contact one is provided with boss, and boss is located at below static contact, and the movable contact spring has together constituted with dual conducting loop with static contact, and dual conducting loop includes conducting loop one and conducting loop two.The reliable D.C. high-current appliance switch is reasonable in design, and static contact component is split-type structural, prevents spring from producing the adhesion that electric arc causes；Static contact component is dual conducting structure, it is ensured that reliability when high current is persistently powered.
Description
Technical field
A kind of switch is the utility model is related to, specifically a kind of reliable D.C. high-current appliance switch.
Background technology
When load voltage reaches more than 60V, and electric current is more than 20A, the mechanical on-off switch of direct current is in contact break-make moment
Caused electric arc and heat caused by switch internal resistance turns into and influences switch performance and the main original in life-span when being electrified for a long time
Cause.Prior art has the following disadvantages：First, switch is during connection, such as contact closure instantaneous touch hypotony, between contact
It can generate heat serious, when particularly service speed is low, electrical current is big, quiet Welding Phenomena can be produced；In the wink that switch contact disconnects
Between, high-current switch can produce very serious electric arc, if not fast enough the electric arc sustained combustion of opening velocity, can produce dynamic melting welding；
Generation melting welding can make switch failure between switching dynamic and static contact.2nd, in ON operating process is switched, depression bar is quickly across fulcrum
Moment, the dynamic pressure from depression bar suffered by movable contact spring can be reduced slightly, and Simultaneous Switching is connected moment movable contact spring and quickly turned over
Turn, moving contact strikes static contact, due to the inertia in movable contact spring motion process, can take off movable contact spring generation moment from terminal
From trend, further, since the factor of the placed angle switched during work, place instrument vibrations etc., movable contact spring during switch connection
The electric arc of moment occurs between terminal, phenomena such as producing slight electroerosion or melting welding, long term accumulation can cause switch to produce
Heating, use reliability reduce the problems such as.
Therefore, the utility model provides a kind of reliable D.C. high-current appliance switch, can realize that high reliability break-make is cut
Change, and can effectively mitigate caloric value when high current is powered, can be applied in various direct current hand-helds or the instrument such as desk-top.
Utility model content
The purpose of this utility model is to provide a kind of reliable D.C. high-current appliance switch, to solve above-mentioned background skill
The problem of being proposed in art.
To achieve the above object, the utility model provides following technical scheme：
A kind of reliable D.C. high-current appliance switch, including depression bar assembly, plunger, upper lid, shell, F springs, movable contact spring
Component and static contact component；Upper lid forms switch case with shell, and upper lid is provided with rail cavity with enclosure, and plunger is arranged on upper
In the rail cavity that lid is formed with shell, depression bar assembly is arranged in plunger, and plunger right-hand member is provided with F springs；The movable contact spring group
Part includes moving contact and movable contact spring, and moving contact is riveted on movable contact spring, and movable contact spring is buckled on the terminal on shell by F reeds,
The swing of certain amplitude can be made around the fulcrum of terminal, depression bar assembly driving moving contact is contacted or separated with static contact；The stationary contact
Piece component is split modular structure, and the static contact component includes static contact, static contact two and static contact one；Static contact one is solid
Dingan County is on shell, and the upper end of static contact one is connected with static contact two, and the other end riveting of static contact two has static contact, stationary contact
Head is below moving contact；The upper right side of static contact one is provided with boss, and boss is located at below static contact, the movable contact spring with it is quiet
Dual conducting loop is constituted between contact one；Dual conducting loop includes conducting loop one and conducting loop two；Turn on loop one：
Movable contact spring → moving contact → static contact → two → static contact of static contact one；Turn on loop two：Movable contact spring → moving contact → static contact
→ static contact one；The static contact two is made by high conductivity copper alloy；The static contact two is using riveting or welding manner
Reliably it is fixed on static contact one, the riveting position of static contact two and static contact is in 180 ° of reflexeds.
As further program of the utility model：The static contact one is in " 7 " character form structure.
As further program of the utility model：The F reeds are jump ring.
As further program of the utility model：The depression bar assembly includes swing rod, C springs, C reeds and depression bar；Pendulum
C springs are provided with inside bar, C lower spring ends are connected to depression bar, and the insertion of depression bar upper end is connected in swing rod, the left and right ends of C reeds
The flexible terminal of each independent cantilever beam structure is equipped with, is fixedly connected at the top of flexible terminal on swing rod, two swing arms
Pretightning force is produced by compression respectively.
As further program of the utility model：5. a is equal by the size L of the size L of the plunger 3. a and swing rod, post
5. b is equal by the size L of the size L of plug 3. b and swing rod.
Compared with prior art, the beneficial effects of the utility model are：
The reliable D.C. high-current appliance switch is reasonable in design, compact-sized, and static contact component is split-type structural, tool
Flexible terminal structure absorbable connection moment comes from the impulsive force of moving contact, prevents spring moment from producing electric arc and causing it
Adhesion；Static contact component is dual conducting structure, and in addition to flexible terminal forms galvanic circle, contact forms conductive again up and down
Loop, it is ensured that reliability when high current is persistently powered.
Brief description of the drawings
Fig. 1 is the overall structure diagram of reliable D.C. high-current appliance switch.
Fig. 2 is one of assembling structure schematic diagram of depression bar assembly in reliable D.C. high-current appliance switch.
Fig. 3 is two of the assembling structure schematic diagram of depression bar assembly in reliable D.C. high-current appliance switch.
Fig. 4 is three of the assembling structure schematic diagram of depression bar assembly in reliable D.C. high-current appliance switch.
Fig. 5 is one of work structure diagram of depression bar assembly in reliable D.C. high-current appliance switch.
Fig. 6 is two of the work structure diagram of depression bar assembly in reliable D.C. high-current appliance switch.
Fig. 7 is the operation principle structural representation of depression bar assembly in reliable D.C. high-current appliance switch.
Fig. 8 is the position view after reliable D.C. high-current appliance switch is connected.
Fig. 9 is one of structural representation of movable contact spring component in reliable D.C. high-current appliance switch.
Figure 10 is two of the structural representation of movable contact spring component in reliable D.C. high-current appliance switch.
Figure 11 is one of structural representation of static contact component in reliable D.C. high-current appliance switch.
Figure 12 is two of the structural representation of static contact component in reliable D.C. high-current appliance switch.
Figure 13 is that static contact component is encased in the schematic diagram after shell in reliable D.C. high-current appliance switch.
Structural representation when Figure 14 is reliable D.C. high-current appliance switch fully switched on state.
Wherein：Covered on 1-；2-F springs；3- plungers；4- dust rings；5- swing rods；6- C springs；7- C reeds；8- depression bars；
9- F reeds；10- terminals；11- movable contact springs；12- moving contacts；13- static contacts；14- static contacts two；15- static contacts one；Outside 16-
Shell；17- blowout magnets；X- fulcrums one；Y- fulcrums two.
Embodiment
The technical scheme of this patent is described in more detail with reference to embodiment.
Refer to Fig. 1-14, a kind of reliable D.C. high-current appliance switch, including it is depression bar assembly, plunger 3, upper lid 1, outer
Shell 16, F springs 2, movable contact spring component and static contact component；Upper lid 1 and shell 16 form switch case, upper lid 1 with shell 16
Portion is provided with rail cavity, and plunger 3 is arranged in the rail cavity that upper lid 1 is formed with shell 16, and depression bar assembly is arranged in plunger 3, post
Fill in 3 left ends and be connected to external force connecting rod, the right-hand member of plunger 3 is provided with F springs 2, and passing through external force connecting rod during work applies operating physical force
On plunger 3, drive plunger 3 and its depression bar assembly to slide to the right and compress F springs 2, operating physical force cancel after F springs 2 bullet
Automatic realize resets power effect lower plunger 3 to the left；The enclosure interior of shell 16 is provided with blowout magnet 17；The plunger 3 with it is outer
The junction of shell 16 is provided with dust ring 4, and dust ring 4 is enclosed on plunger 3；
The movable contact spring component includes moving contact 12 and movable contact spring 11, and the lower-left end of shell 16 is provided with terminal 10, described
Moving contact 12 is riveted on movable contact spring 11, and movable contact spring 11 is buckled on the terminal 10 on shell 16 by F reeds 9；Movable contact spring 11 can
Make the swing of certain amplitude with the fulcrum around terminal 10, but in working both without departing from；
The static contact component includes static contact 13, static contact 2 14 and static contact 1；Static contact 1 is in " 7 " font
Structure, static contact 1 are fixedly mounted on shell 16, are connected with static contact 2 14 on static contact 1, static contact 2 14 it is another
One end riveting has static contact 13；During work, terminal 10 is current input terminal, and static contact 1 is current output terminal, passes through pressing
Plunger 3 connects circuit, and release plunger 3 carrys out disconnecting circuit；Static contact 13 is located at the lower section of moving contact 12；
The movable contact spring 11 is provided with arc convex, the central axis position of arc convex axial centerline and the Y of fulcrum two
Put coincidence, the tip of the lower section of depression bar 8 is withstood on the left of the arc convex of movable contact spring 11 during initial position, and branch is provided with the top of depression bar assembly
Point one X, the X of fulcrum one support for circular arc, and the center line that depression bar assembly can support around circular arc makees the swing of low-angle, swings
Direction depending on the direction that plunger 3 moves, utilize the depression bar assembly that can be swung by designated magnitude, lifted movable contact spring 11
Mechanical dead point is eliminated while reversal rate；
Fig. 2-4 is the assembling structure schematic diagram of depression bar assembly, and the depression bar assembly includes swing rod 5, C springs 6, the and of C reeds 7
Depression bar 8；The inside of swing rod 5 is provided with C springs 6, and the lower end of C springs 6 is connected to depression bar 8, and the insertion of the upper end of depression bar 8 is connected in swing rod 5, C
The left and right ends of reed 7 are La with being equipped with the flexible terminal of each independent cantilever beam structure, elastic tip at Lb illustrated dimensions
The top of son is fixedly connected on swing rod 5, and two swing arms produce pretightning force by compression respectively；Simultaneously in structure, the chi of plunger 3
5. a is equal by the size L of very little L 3. a and swing rod, and 5. b is equal by the size L of the size L of plunger 3 3. b and swing rod 5, so before depression bar 8
When end is not by side force, depression bar assembly is in neutral condition；The top of swing rod 5 is provided with the X of fulcrum one；
Shown in Fig. 5-7, because the elastic force of C springs 6 acts on, the front end of depression bar 8 will be acted on by frictional force f and normal pressure N,
The afterbody of depression bar 8 will be acted on by the contact pressure F for coming from plunger 3；When plunger 3 is moved right by operating physical force, it is pressurized
The front end active force of bar 8（Frictional force f and normal pressure N）The effect of torque, depression bar 8 rotate by axle of the center line that circular arc supports,
Until encounter the side wall of plunger 3 at the side spacing place A of swing rod 5；
In the deflection of depression bar 8, the size La of C reeds 7 is produced elastic force Fa, the wherein head of depression bar 8 by compression
The moment of torsion of active force is greater than moment of torsion caused by the directed force F a of C reeds 7, it is ensured that resultant moment M make the component of depression bar 8 move when depression bar group
Part produces deflection to the left；
Plunger 3 continues to move to, and is crossed the Y of fulcrum two moment in depression bar 8, the reversion of the Moment direction of movable contact spring 11, moves and touches
Piece 11 is begun turning so that the angle between sliding surface and horizontal direction is changed into β from θ；Now, the malleation suffered by the head of depression bar 8
The size and Orientation of power and frictional force also changes therewith（As shown in f` in figure and N`）So that the resultant moment of depression bar assembly reversely becomes
For M`, the elastic potential energy release of C reeds 7 is changed into the kinetic energy of depression bar 8 so that depression bar assembly quickly deflects to the right；
Fig. 8 is the position view after switch connection, and the moving contact 12 of depression bar 8 and movable contact spring 11 is fast from the Y location of fulcrum two
The position that it is L2 with the Y of fulcrum two distances that speed, which jumps to, while making the movable contact spring 11 quickly overturn, it is ensured that the dynamic of moment is connected in loop
The pressure value N of contact 12 is L2/（L1+L2）× F, thus avoid mechanical dead point in sound contact（That is the Y of fulcrum two）,
So that reliability when there is the contact pressure of abundance the moment that switching circuitry is connected to ensure that switch is powered.Same work is former
Reason, after the operating physical force being applied on plunger 3 is unclamped, under by the rebound effect of compression F springs 2, plunger 3 drives depression bar group
Part is moved to the left, and the Lb of C reeds 7 part produces elastic potential energy by compression, in depression bar 8 to the left across after the Y of fulcrum two, C reeds 7
Elastic potential energy be changed into the kinetic energy of movable contact spring 11, it is quickly overturn, so that moving contact 13 and static contact 13 are from contact condition
It is separated to and is fully disconnected（Refer to the minimum space distance for reaching breaking arc）The required time accelerates to arrive several milliseconds.
Fig. 9-10 is movable contact spring component structure diagram, and the F reeds 9 that high-yield strength material makes are stuck on terminal 10,
The frame of movable contact spring 11 is on terminal 10, while F reeds 9 are pressed at two arc convex of movable contact spring 11, the central shaft of arc convex
The central axis coaxial that line rotates with movable contact spring 11 around terminal 10, in the rotary course of movable contact spring 11, by the pressure of F reeds 9
F1, F2 are constant, and in the presence of this pressure, it is that inversion or side are put and may insure terminal 10 at work no matter to switch
Can reliably it be contacted between movable contact spring 11；The F reeds 9 are jump ring.The movable contact spring 11 is pressed in terminal 10 by F reeds 9
On, movable contact spring 11 overturns reliable contacts discharge off between moment and terminal 10, and what solution movable contact spring 11 departed from from terminal 10 asks
Topic；
Such as Figure 11-12, the static contact component is split modular structure, and elastic construction can absorb the impact for connecting moment
Power, prevent spring from producing the adhesion that electric arc causes.The static contact 2 14 is by relatively thin high conductivity copper alloy making, is realized
Conductive capability is improved while low elastic coefficient, mitigates temperature rising degree when high current is powered；The static contact 2 14 is adopted
Reliably it is fixed on static contact 1 with riveting or welding manner, both form one；Riveted simultaneously on static contact 2 14
There is static contact 13, for increase riveting intensity and heat dispersion, the riveting position of static contact 2 14 and static contact 13 is in 180 ° of reflexeds,
Reach double thickness；
In switch connection, movable contact spring 11 is overturn, moving contact 12 hit static contact 13, static contact 2 14 withstand shocks power when
Produce the deformation of certain amplitude, static contact 13 is close to moving contact 12 and make experiencing small oscillating movements, mitigate spring cause moving contact 12 with
Electric arc between static contact 13, prevent two contacts from adhering；Figure 13 is that static contact component is encased in the schematic diagram after shell 16, thick dashed line
The flow path signal of electrode current when just being closed for contact；
The static contact component is dual conducting structure, except flexible terminal form galvanic circle in addition to, static contact 13 with
Static contact 1, which directly contacts, forms an other galvanic circle, it is ensured that reliability when high current is persistently powered；Shown in Figure 14
To switch fully switched on state, the upper right side of static contact 1 is provided with boss, and boss is located at below static contact 13, switchs from connecing
Logical moment is persistently mobile during being pressed into bottom to plunger 3, and the pressure of movable contact spring 11 is applied to substantially not in depression bar 8
On the premise of change, depression bar 8 moves from Figure 13 close to the Y of fulcrum two position at moving contact 12, depression bar 8 and the fulcrum two of terminal 10
The arm of force becomes larger, and pressure component can gradually increase between moving contact 12 and static contact 13, causes static contact 2 14 to produce change
Shape, the bottom of final static contact 13 force to contact with the boss of static contact 1 at G points.
Exemplified by as shown in Figure 14, the power suffered by static contact 13 has following three：A：Come from the downward power of moving contact 12；
B：Come from the upward power of static contact 2 14；C：Come from the upward power of static contact 1.Its relativeness is A=B+C, stationary contact
The coefficient of elasticity design load of piece 2 14 is relatively low, and B force value is set as less than the 1/2 of A, has between static contact 13 and static contact 1 and fills
The contact pressure of foot makes its contact reliable, and caloric value is low during energization；The flow path of electrode current when thick dashed line is contact closure,
Dual conducting is constituted between movable contact spring 11 and static contact 1, reduces line resistance；Turn on the C1 of loop one：Movable contact spring 11 → dynamic tactile
2 14 → static contact of first 12 → static contact, 13 → static contact 1；Turn on the C2 of loop two：Movable contact spring 11 → moving contact, 12 → stationary contact
First 13 → static contact 1.
The reliable D.C. high-current appliance switch is reasonable in design, compact-sized, using can be swung by designated magnitude
Depression bar assembly, lifted movable contact spring reversal rate while eliminate mechanical dead point；Movable contact spring is buckled on terminal with reed, both
Between all the time force contact, even in upset moment movable contact spring and terminal between same reliable contacts；Static contact component is split
Formula structure, flexible terminal structure absorbable connection moment come from the impulsive force of moving contact, prevent spring from producing electric arc
The adhesion caused；Static contact component is dual conducting structure, except flexible terminal form galvanic circle in addition to, contact up and down again structure
Into galvanic circle, it is ensured that reliability when high current is persistently powered.
, it is necessary to which explanation, is provided unless otherwise clear and definite in the description of this reliable D.C. high-current appliance switch
And restriction, term " setting ", " connected " and " connection " should be interpreted broadly, for example, it may be being fixedly connected or removable
Unload connection, or integrally connected；Can be joined directly together, can also be indirectly connected by intermediary, can be in two elements
The connection in portion.For the ordinary skill in the art, can regard concrete condition understands above-mentioned term in the utility model
In concrete meaning.
The better embodiment of this patent is explained in detail above, but this patent is not limited to above-mentioned embodiment party
Formula, can also be on the premise of this patent objective not be departed from one skilled in the relevant art's possessed knowledge
Make a variety of changes.
Claims (4)
1. a kind of reliable D.C. high-current appliance switch, it is characterised in that including depression bar assembly, plunger（3）, upper lid（1）, it is outer
Shell（16）, F springs（2）, movable contact spring component and static contact component；Upper lid（1）With shell（16）Form switch case, upper lid（1）
With shell（16）Inside is provided with rail cavity, plunger（3）Installed in upper lid（1）With shell（16）In the rail cavity of composition, depression bar group
Part is arranged on plunger（3）In, horizontally slipped with plunger, plunger（3）Right-hand member is provided with F springs（2）；The movable contact spring component includes
Moving contact（12）And movable contact spring（11）, moving contact（12）It is riveted on movable contact spring（11）On, movable contact spring（11）Pass through F reeds（9）Button
In shell（16）On terminal（10）On, can be around terminal（10）Fulcrum make the swing of certain amplitude, depression bar assembly driving is dynamic to touch
Head（12）With static contact（13）Contact or separation；The static contact component is split modular structure, the static contact component bag
Include static contact（13）, static contact two（14）With static contact one（15）；Static contact one（15）It is fixedly mounted on shell（16）On, stationary contact
Piece one（15）Upper end by riveting or welding and static contact two（14）Connection, static contact two（14）The other end riveting have stationary contact
Head（13）, static contact（13）Positioned at moving contact（12）Lower section；The static contact one（15）Upper right side is provided with boss, and boss is positioned at quiet
Contact（13）Lower section, the movable contact spring（11）With static contact one（15）Between constitute dual conducting loop；Dual conducting loop bag
Include conducting loop one and conducting loop two；Turn on loop one：Movable contact spring（11）→ moving contact（12）→ static contact（13）→ stationary contact
Piece two（14）→ static contact one（15）；Turn on loop two：Movable contact spring（11）→ moving contact（12）→ static contact（13）→ static contact
One（15）；The static contact two（14）It is to be made by high conductivity copper alloy；The static contact two（14）Using riveting or welding
Mode is reliably fixed on static contact one（15）On, static contact two（14）With static contact（13）Riveting position be in 180 ° of reflexeds.
2. reliable D.C. high-current appliance switch according to claim 1, it is characterised in that the static contact one（15）
In " 7 " character form structure.
3. reliable D.C. high-current appliance switch according to claim 1, it is characterised in that the F reeds（9）For card
Spring.
4. according to any described reliable D.C. high-current appliance switches of claim 1-3, it is characterised in that the depression bar group
Part includes swing rod（5）, C springs（6）, C reeds（7）And depression bar（8）；Swing rod（5）Inside is provided with C springs（6）, C springs（6）Lower end
It is connected to depression bar（8）, depression bar（8）Upper end insertion is connected to swing rod（5）In, C reeds（7）Left and right ends be equipped with respective independence
Cantilever beam structure flexible terminal, be fixedly connected on swing rod at the top of flexible terminal（5）On, two swing arms are produced by compression respectively
Raw pretightning force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720736723.7U CN207097726U (en) | 2017-06-23 | 2017-06-23 | A kind of reliable D.C. high-current appliance switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720736723.7U CN207097726U (en) | 2017-06-23 | 2017-06-23 | A kind of reliable D.C. high-current appliance switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207097726U true CN207097726U (en) | 2018-03-13 |
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ID=61553793
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720736723.7U Active CN207097726U (en) | 2017-06-23 | 2017-06-23 | A kind of reliable D.C. high-current appliance switch |
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| Country | Link |
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| CN (1) | CN207097726U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109119294A (en) * | 2018-09-26 | 2019-01-01 | 上海苏慧电气有限公司 | A kind of magnetic latching relay |
-
2017
- 2017-06-23 CN CN201720736723.7U patent/CN207097726U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109119294A (en) * | 2018-09-26 | 2019-01-01 | 上海苏慧电气有限公司 | A kind of magnetic latching relay |
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