CN107134380A - Limit switch cored structure - Google Patents
Limit switch cored structure Download PDFInfo
- Publication number
- CN107134380A CN107134380A CN201710416125.6A CN201710416125A CN107134380A CN 107134380 A CN107134380 A CN 107134380A CN 201710416125 A CN201710416125 A CN 201710416125A CN 107134380 A CN107134380 A CN 107134380A
- Authority
- CN
- China
- Prior art keywords
- movable contact
- spring
- contact spring
- pedestal
- expansion link
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/58—Electric connections to or between contacts; Terminals
-
- 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
-
- 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
- H01H3/38—Driving mechanisms, i.e. for transmitting driving force to the contacts using spring or other flexible shaft coupling
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Push-Button Switches (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
Cored structure is switched the invention discloses one kind, it includes：Drain pan, its bottom is provided with positioning boss, and positioning boss both sides are provided with grooved rail and surface is folding face；Base assembly, it is assemblied in drain pan；Movable component, it is assemblied in base assembly, movable component includes motion bar, elastic parts and movable contact spring component, elastic parts includes main spring, secondary spring and expansion link, secondary spring can drive expansion link axially retractable, movable contact spring component includes the counterbore that the through hole that can pass freely through expansion link is provided with movable contact spring pedestal, movable contact spring pedestal and rolling element is placed；Wherein, rolling element can be moved along grooved rail, and expansion link stress may pass through movable contact spring pedestal and positioning boss contact of incline plane.Occur powering off or scintillation in switching moment present invention effectively prevents switch, the frictional force that movable component motion is produced is reduced by slide mass, normally-open normally-close connector can easily shift one's position and quantity, improve switch motion mode and repeatable accuracy.
Description
Technical field
The present invention relates to switch, and in particular to a kind of limit switch cored structure.
Background technology
Existing limit switch core more use spring or shell fragment form, switch movable contact piece from it is normally closed contact be converted into often
Open Contact easily to occur all being not turned on or signal scintillation, this phenomenon, which is easily caused machinery equipment and misoperation occurs, to be caused
Machine surprisingly stops or started using may also result in elevator on elevator along bad, using door can be caused not open on motor-car,
Passenger needs emergency evacuation.Solve to use the scheme of this problem at present by the activity of making of metal movable contact spring again more plus little spring makes it
It is positioned on plastic stent, the power by big spring operation force much larger than little spring this problem occurs to alleviate, such a method band
It is that switch motion parameter ratio is much bigger without band little spring action parameter to carry out problem, and switch needs actuating length and total kilometres all to need
Increase, when switch head trigger mechanism, rubber deformation amount can be than larger in the case of Packed, and use time is long and action
Number of times increase is easily caused rubber fatigue rupture.Switch mounting hole site size itself has standard requirement, such switch cavity in the world
Body is also required for sufficient space and connected for connector, and this just determines that switch core can not be made very big, also just determines multiple
Position spring can not be made very long, and spring finite length needs big decrement to be easily caused elastic force decay or spring fatigue fracture.
Movable contact spring is positioned with little spring, and position is easily varied in movable contact spring motion process so that switching accuracy and action parameter tolerance become
Change big.
The content of the invention
Goal of the invention：The present invention provides a kind of limit switch cored structure, occurs in the application to solve long-term switch
Signal flicker or circut breaking, switch motion parameter it is big, the problem of switching accuracy and big action parameter tolerance variation.
Technical scheme：A kind of limit switch cored structure, it includes：
Drain pan, its bottom is provided with positioning boss, and the positioning boss both sides are provided with grooved rail, the positioning boss
Surface is folding face；
Base assembly, it is assemblied in the drain pan, and the base assembly includes static contact pedestal, the base assembly one
Side offers opening, and opposite side is provided with normally opened and normally closed connector assembly；
Movable component, it is assemblied in the opening, and the movable component includes motion bar, elastic parts and movable contact spring group
Part, the elastic parts is stuck on the motion bar and is assemblied in the movable contact spring component, and the elastic parts includes main bullet
Spring, secondary spring and expansion link, the secondary spring can drive the expansion link axially retractable, the movable contact spring component bag
Include and the through hole that can pass freely through the expansion link is provided with movable contact spring pedestal, the movable contact spring pedestal and rolling element is placed
Counterbore；
Wherein, the rolling element can make back and forth movement along the grooved rail, and the expansion link stress may pass through described dynamic
Contact pedestal is contacted with the positioning boss.
Described normally opened and normally closed connector assembly includes static contact connector and static contact fixture respectively, and the static contact connects
Plug-in unit is fixed in the way of being bumped on the static contact pedestal.
The movable component also includes back-moving spring and forces separation member, and the back-moving spring is abutted with the motion bar,
Between the drain pan for forcing separation member rotatably to set and the movable contact spring component.
The elastic parts also includes front support rod and back stay, and the back stay is provided with through hole, the front support rod and stretches
Contracting bar is assemblied in the through hole of the back stay, and the front support rod is connected by secondary spring with the expansion link.
The movable contact spring component also includes movable contact spring and movable contact spring locating part, and the movable contact spring locating part is from the movable contact spring
Base central inserts the movable contact spring base interior with the fixed movable contact spring toward both sides.
The normally opened connector assembly includes the two normally opened connector assemblies in left and right and the normally opened connector in left and right two is adjacent
Be arranged on the static contact pedestal, the normally closed connector assembly include left and right two normally closed connectors and left and right have two it is normally closed
Connector is disposed adjacent on the static contact pedestal, wherein, the normally opened connector assembly is with the normally closed connector with ladder
The mode that type staggers is oppositely arranged on the static contact pedestal.
Beneficial effect：
(1) limit switch cored structure of the invention uses and constitutes bullet by front support rod, back stay, main spring, secondary spring
Property component, produce elastic force realize switch switching, and switch switch during, arc contact surface and convex on expansion link
The contact of incline plane of platform part and produce pressure and act on movable contact spring component, it is to avoid movable contact spring from it is normally closed jump to it is normally opened pass or it is normally opened jump
To it is normally closed when instantaneous there is dynamic balance and produce minute movement and occur flashing or circut breaking；
(2) elastic parts effectively prevent the elasticity member that single flexible member during switch use is easily caused in the present invention
Part aging, elastic force decay causes the phenomenons such as malfunctioning switch, loose contact；
(3) connector is fixed on static contact pedestal using mold insert form, is filled by connector size change over and movable contact spring
A variety of core combinations are easily realized with mode, such as：2 normally opened cored structures (2NO)；2 normally closed cored structures (2NC)；1 is normally opened
1 normally closed cored structure (1NO/1NC)；
(4) normally-open normally-close connector assembly uses trapezoidal arrangement of staggering, and external cabling more facilitates, and efficiency of assembling is higher.
Brief description of the drawings
Fig. 1 is overall structure exploded perspective view；
Fig. 2 is base assembly structural representation；
Fig. 3 is movable component structural representation；
Fig. 4 is movable contact spring modular construction schematic diagram；
Fig. 5 is connector assembly structural representation；
Fig. 6 is bottom case structure schematic diagram；
Fig. 7 is close-up schematic view；
Fig. 8 is elastic parts structural representation.
Embodiment
The present invention will be further described below in conjunction with the accompanying drawings.
As shown in Fig. 1-8, one kind switch cored structure, it includes：Drain pan 1, its bottom is provided with positioning boss 2, positioning
The both sides of boss 2 are provided with grooved rail 3, and the surface of positioning boss 2 is folding face；
Base assembly 4, it is assemblied in drain pan 1, and base assembly 4 includes static contact pedestal 18, and the side of base assembly 4 is opened up
There is opening, opposite side is provided with normally opened 5 and normally closed 6 connector assembly, and normally opened connector assembly 5 and normally closed connector assembly 6 are wrapped respectively
Static contact connector 16 and static contact fixture 17 are included, static contact connector 16 is fixed on static contact pedestal 18 in the way of being bumped into
On, using inset type fixed form, be easy to convert connector position feature and with the movable contact spring way of contact, as shown in figure 5, this
The normally opened connector assembly 5 of invention includes normally opened two connector assemblies in left and right, and the normally opened connector assembly in left and right two is disposed adjacent
On static contact pedestal, normally closed connector 6 includes normally closed two connector assemblies in left and right, and the normally closed connector assembly in left and right two is adjacent to be set
Put on static contact pedestal, and normally opened connector assembly 5 be oppositely arranged on normally closed connector assembly 6 in the way of trapezoidal stagger it is quiet
On contact pedestal 18, normally closed connector assembly whole is simultaneously come below housing, forms the two normally-closed contact ways of contact.It can also lead to
Conversion connector length is crossed, makes normally closed connector assembly whole and comes above housing, two normally opened contact connector contacts are formed
Mode.Connector can also be made to each one up and down, the 1 normally opened 1 normally closed contact connector way of contact is formed；
Movable component 7, it is assemblied in the opening of base assembly 4, and movable component 7 includes motion bar 8, elastic parts 9, moved
Contact assemblies 10, back-moving spring 19 and pressure separation member 20, elastic parts 9 are stuck on motion bar 8 and are assemblied in movable contact spring component
In 10, elastic parts 9 includes main spring 11, secondary spring 12, expansion link 13, front support rod 21 and back stay 22, secondary spring 12
Expansion link 13 can be driven axially retractable, movable contact spring component 10 includes movable contact spring 23, movable contact spring locating part 24 and movable contact spring pedestal
14, movable contact spring locating part 24 inserts to fix movable contact spring 23, movable contact spring pedestal 14 from the inside center of movable contact spring pedestal 14 toward both sides
On be provided with the through hole that can pass freely through expansion link 13 and place the hole of rolling element 15, rolling element 15 can lead 3 rails work along groove
Back and forth movement, the stress of expansion link 13 may pass through movable contact spring pedestal 14 and the contact of incline plane of positioning boss 2, and back stay 22 is provided with logical
Hole, front support rod 21 and expansion link 13 are assemblied in the through hole of back stay 22, and front support rod 21 passes through secondary spring 12 and expansion link 13
Connection, back-moving spring 19 is abutted with motion bar 7, forces the drain pan 1 that separation member 20 is rotatably set and movable contact spring component
Between 10.Wherein, the setting of rolling element 15 can reduce the frictional force that the motion of movable component 7 is produced, secondary spring 12, expansion link
13 and the setting of positioning boss 2 can make in the motion process of motion bar 7 expansion link cambered surface in the inclined-plane of positioning boss 2 and elastic component 9
Contact and produce extra small power to avoid switch from occurring powering off or scintillation in switching moment.Stretched during assembling in elastic parts 9
Contracting bar 13 is contacted with positioning boss 2, but is not contacted with movable contact spring pedestal 14, back stay 22 and movable contact spring pedestal in elastic parts 9
14 contacts, but do not contacted with positioning boss 2.
Operation principle：Original state movable contact spring keeps contacting shape under the effect of movable component pressure with normally closed connector assembly
State, movable contact spring component keeps contacting under the effect of elastic component pressure with normally closed connector assembly.When motion bar under external force
When down moving, elastic parts starts compression, when elastic parts vertically with movable contact spring pedestal side when, main spring be in most
Big decrement, now main spring elastic force is maximum, and main spring does not produce pressing force to movable contact spring component, because positioning boss is carried
Surface is folding face, and expansion link circular arc and positioning boss surface are still not at plumbness on elastic component, now secondary spring pair
Movable contact spring component can also produce the power pushed, thus avoid main spring there may be when being in dynamic balance switch do not have also saltus step dynamic but
There is minim gap in stationary contact, cause switch no power or flicker failure situation occur, when motion bar continue down it is small away from
From when main spring produce upward power rapidly, simultaneous retractable bar is now also at perpendicular positioning boss surface, and secondary spring is touched to dynamic
The piece component not pressure under generation, because main spring force is much larger than secondary spring power, so that promote movable contact spring component to move upwards,
Now normally-closed contact is powered off, normally opened connector contacting.Motion bar continues down to move, and motion bar boss is with forcing separation member
Contact, forces separation member to be rotated around cylinder, when movable contact spring occurs, without under up motion conditions, now forcing separation member once in a while
It can force movable contact spring and normally closed connector contact separation, so as to ensure that movable contact spring is powered off with normally closed connector contact.Motion bar
Under return spring force effect back in motion process, when elastic parts vertically with movable contact spring when, main spring is in maximum compression
Amount, now main spring elastic force is maximum, and when motion bar continues past slight distance, now main spring produces rapidly downward force, simultaneous retractable
Bar is also at perpendicular positioning boss folding face, and secondary spring is to the movable contact spring component not pressure under generation, because main spring force is long-range
In secondary spring power, so as to promote movable contact spring component to move downward, now normally opened contact is powered off, and normally-closed contact is connected, motion bar
Continuation is up moved until motion bar stops.
The preferred embodiment of the present invention described in detail above, still, the present invention are not limited in above-mentioned embodiment
Detail, in the range of the technology design of the present invention, a variety of equivalents can be carried out to technical scheme, this
A little equivalents belong to protection scope of the present invention.It is further to note that described in above-mentioned embodiment
Each particular technique feature, in the case of reconcilable, can be combined by any suitable means.In order to avoid not
Necessary repetition, the present invention no longer separately illustrates to various possible combinations.
Claims (9)
1. a kind of limit switch cored structure, it is characterised in that it includes：
Drain pan (1), its bottom is provided with positioning boss (2), and positioning boss (2) both sides are provided with grooved rail (3), described
Positioning boss (2) surface is folding face；
Base assembly (4), it is assemblied in, and the drain pan (1) is inner, and the base assembly includes static contact pedestal (18), the pedestal
Component (4) side offers opening, and opposite side is provided with normally opened connector assembly (5) and normally closed (6) connector assembly；
Movable component (7), it is assemblied in the opening, and the movable component includes motion bar (8), elastic parts (9) and moved
Contact assemblies (10), the elastic parts (9) is stuck on the motion bar (8) and to be assemblied in the movable contact spring component (10) inner,
The elastic parts (9) includes main spring (11), secondary spring (12) and expansion link (13), and the secondary spring (12) can drive
Make the expansion link (13) axially retractable, the movable contact spring component (10) includes movable contact spring pedestal (14), the movable contact spring base
The through hole that can pass freely through the expansion link and the counterbore for placing rolling element (15) are provided with seat (14)；
Wherein, the rolling element (15) can make back and forth movement along the grooved rail (3), and expansion link (13) stress may pass through
The movable contact spring pedestal (14) and the positioning boss contact of incline plane.
2. limit switch cored structure according to claim 1, the normally opened connector assembly (5) and normally closed connector assembly
(6) static contact connector (16) and static contact fixture (17), side of the static contact connector (16) to be bumped into are included respectively
Formula is fixed on the static contact pedestal (18).
3. limit switch cored structure according to claim 1, the movable component also includes back-moving spring (19) and strong
Separation member (20) processed.
4. limit switch cored structure according to claim 3, the back-moving spring (19) is supported with the motion bar (7)
Connect, between the drain pan (1) for forcing separation member (20) rotatably to set and the movable contact spring component (10).
5. limit switch cored structure according to claim 1, the elastic parts (9) also include front support rod (21) and after
Pole (22), the back stay (22) is provided with through hole.
6. limit switch cored structure according to claim 5, the front support rod (21) and expansion link (13) are assemblied in institute
In the through hole for stating back stay (22).
7. limit switch cored structure according to claim 5, the front support rod (21) passes through secondary spring (12) and institute
State expansion link (13) connection.
8. limit switch cored structure according to claim 1, the movable contact spring component (10) also includes movable contact spring (23)
With movable contact spring locating part (24), the movable contact spring locating part (24) is inserted from movable contact spring pedestal (14) inside center toward both sides
With the fixed movable contact spring (23).
9. limit switch cored structure according to claim 1, the normally opened connector assembly (5) includes left and right two often
Open the normally opened connector of connector assembly and left and right two to be disposed adjacent on the static contact pedestal, the normally closed connector assembly
(6) include the two normally closed connectors in left and right and left and right there are two normally closed connectors to be disposed adjacent on the static contact pedestal, its
In, the normally opened connector assembly is oppositely arranged on the static contact pedestal with the normally closed connector in the way of ladder type staggers
On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710416125.6A CN107134380B (en) | 2017-06-05 | 2017-06-05 | Limit switch cored structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710416125.6A CN107134380B (en) | 2017-06-05 | 2017-06-05 | Limit switch cored structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107134380A true CN107134380A (en) | 2017-09-05 |
| CN107134380B CN107134380B (en) | 2019-08-02 |
Family
ID=59733686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710416125.6A Active CN107134380B (en) | 2017-06-05 | 2017-06-05 | Limit switch cored structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107134380B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109243891A (en) * | 2018-09-05 | 2019-01-18 | 庆安集团有限公司 | A kind of switch triggering mechanism |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4578549A (en) * | 1983-09-08 | 1986-03-25 | Square D Starkstrom Gmbh | Snap action electrical switch |
| GB2208037A (en) * | 1987-07-01 | 1989-02-15 | Redcliffe Electronics Limited | Electrical switches |
| US5047628A (en) * | 1990-03-26 | 1991-09-10 | Illinois Tool Works Inc. | Hybrid switch with solid-state condition |
| DE4324763A1 (en) * | 1993-07-23 | 1995-01-26 | Georg Dipl Ing Emken | Electrical snap-action switch having duplicated break and make contacts, and a lock which secures its operation (ensures its operation) |
| DE69902484T2 (en) * | 1998-11-03 | 2003-05-22 | Crouzet Automatismes, Valence | SNAP SWITCH WITH FORCED CONTACT OPENING WITH IMPROVED MOUNTING TOLERANCE |
-
2017
- 2017-06-05 CN CN201710416125.6A patent/CN107134380B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4578549A (en) * | 1983-09-08 | 1986-03-25 | Square D Starkstrom Gmbh | Snap action electrical switch |
| GB2208037A (en) * | 1987-07-01 | 1989-02-15 | Redcliffe Electronics Limited | Electrical switches |
| US5047628A (en) * | 1990-03-26 | 1991-09-10 | Illinois Tool Works Inc. | Hybrid switch with solid-state condition |
| DE4324763A1 (en) * | 1993-07-23 | 1995-01-26 | Georg Dipl Ing Emken | Electrical snap-action switch having duplicated break and make contacts, and a lock which secures its operation (ensures its operation) |
| DE69902484T2 (en) * | 1998-11-03 | 2003-05-22 | Crouzet Automatismes, Valence | SNAP SWITCH WITH FORCED CONTACT OPENING WITH IMPROVED MOUNTING TOLERANCE |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109243891A (en) * | 2018-09-05 | 2019-01-18 | 庆安集团有限公司 | A kind of switch triggering mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107134380B (en) | 2019-08-02 |
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