CN107045957A - One kind switch core anti-oil structure, core assembly and vehicle-mounted switch - Google Patents
One kind switch core anti-oil structure, core assembly and vehicle-mounted switch Download PDFInfo
- Publication number
- CN107045957A CN107045957A CN201710126688.1A CN201710126688A CN107045957A CN 107045957 A CN107045957 A CN 107045957A CN 201710126688 A CN201710126688 A CN 201710126688A CN 107045957 A CN107045957 A CN 107045957A
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- China
- Prior art keywords
- switch
- seal
- hole
- oil structure
- vehicle
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/04—Cases; Covers
- H01H13/06—Dustproof, splashproof, drip-proof, waterproof or flameproof casings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/12—Movable parts; Contacts mounted thereon
Landscapes
- Push-Button Switches (AREA)
Abstract
The invention discloses one kind switch core anti-oil structure, core assembly and vehicle-mounted switch, wherein, switch core anti-oil structure includes caulking gum part and contact head；Through hole is provided with the middle part of caulking gum part, there is tubulose thickened area along the circumference of the through hole；Contact head has seal face and bar portion, and the bar portion is connected through through hole and with gasket seal.The first sealing is formed between seal face and the caulking gum part, the 3rd sealing of formation between the second sealing, gasket seal and the caulking gum part is formed between the bar portion and caulking gum part.By setting contact head, the active force of big spring is acted on contact head, rather than is directly acted on rubber seal, it is to avoid being stressed directly for rubber seal, can extend the service life of rubber seal；Meanwhile, three sealings are formed between contact head and rubber seal, seal request is technically disclosure satisfy that.
Description
Technical field
The present invention relates to switching technique, especially vehicle-mounted switching technique.
Background technology
Vehicle-mounted switch is usually that motion is realized using the cooperation of elastomer structure and plastic casing.In gear arrangement
In, vehicle-mounted switch has considerable effect.The service behaviour of vehicle-mounted switch being capable of long-term safety for speed changer and vehicle
Reliably run significant.
Vehicle-mounted switch needs to work in complex situations：In high temperature, temperature of gear-shifting box up to more than 130 DEG C, and
In some cases, temperature is at subzero 40 DEG C or so, under extreme temperature, switch can safe and stable operation be directly connected to vehicle
Safety traffic；Secondly, the oil in gearbox can produce oil pressure in high temperature；Furthermore, the current margin of switch is big, reverses gear out
Powered-down stream is big, and neutral position switch electric current is small；Finally, the vibration of vehicle is larger.That is it is vehicle-mounted switch local environment temperature because
Element, electricabsorption agent and mechanical factor make it that the difficulty of its steady operation is very big.
Found after applicant's research, switch the rubber sealing structure of core due to by from the frequent reciprocal pressure of big spring
Power, its easy fatigue rupture or failure, particularly when temperature of gear-shifting box is very high, rubber seal is easier to damage.It is existing
There is sealing structure easily from side oil leak.This researchs and analyses process and will described in detail in embodiment part.
The content of the invention
Goal of the invention：A kind of switch core anti-oil structure is provided, and further provided for a kind of with the grease proofing knot of above-mentioned core
The switch core assembly of structure, and a kind of vehicle-mounted switch with above-mentioned switch core anti-oil structure, are deposited with solving prior art
Above mentioned problem.
Technical scheme：One kind switch core anti-oil structure, including：
Caulking gum part, its middle part is provided with through hole, has tubulose thickened area along the circumference of the through hole；
Contact head, with seal face and bar portion, the bar portion is connected through through hole and with gasket seal.
The first sealing, shape between the bar portion and caulking gum part are formed between seal face and the caulking gum part
Into the second sealing, the 3rd sealing is formed between gasket seal and the caulking gum part.
In a further embodiment, it is provided with shell fragment between gasket seal and the caulking gum part.The contact head
For metallic contact, composite matter contact or plastics matter contact.The diameter of the seal face is not more than tubulose thickened area
External diameter.The rubber seal is provided with the thickened section with switch case shape adaptation, lug boss or kink.The bar portion
Diameter is more than the diameter of through hole, forms interference fit.
A kind of core assembly that switchs includes the switch core anti-oil structure described in any of the above-described embodiment.One kind is vehicle-mounted to be opened
Close, including the switch core assembly.
A kind of vehicle-mounted switch, including the switch core anti-oil structure described in any of the above-described embodiment.
Beneficial effect：By setting contact head, the active force of big spring is acted on contact head, rather than directly acts on rubber
On glue seal, it is to avoid being stressed directly for rubber seal, the service life of rubber seal can be extended；Meanwhile, contact
Three sealings are formed between head and rubber seal, seal request is technically disclosure satisfy that.
Brief description of the drawings
Fig. 1 is the exploded view of the present invention.
Fig. 2 is the sectional view of the present invention.
Fig. 3 is the partial enlarged drawing of the present invention.
Fig. 4 is the structural representation for switching core assembly.
Fig. 5 and Fig. 6 are the structural representations of two kinds of vehicle-mounted switches of the invention.
Embodiment
In order to solve the problem of prior art is present, applicant existing vehicle-mounted switching technique has been carried out in depth analysis and
Research, it has been found that the rubber seal in vehicle-mounted switch core assembly is easier to damage failure.To find out its cause, main
It is that compression spring drives expansion link (motion bar) impact contact rubber seal, therefore the speed of its fatigue/rupture/failure repeatedly
Faster；Simultaneously, it is contemplated that the working environment very severe of vehicle-mounted switch, at high temperature, the speed of rubber seal aging/fatigue
Faster.
For example, prior art 1 discloses a kind of rubber sealing structure, its mainly the rubber seal including monolithic structure,
Movable holddown, movable contact spring, back-moving spring and metal shell etc..Movable holddown is abutted in rubber seal under the action of the spring.
Prior art 2 is coordinated using rubber seal with plastic seal with groove.It is living in the rubber seal using full slice system
Motion block is directly acted on rubber seal, and power is transferred into movable contact spring component by the rubber seal, movable contact spring is promoted
It is mobile, so as to realize switch.In this kind of technical scheme, because rubber has certain thickness and elasticity, with what be can not ignore
Deflection, the deflection influences whether switch over travel parameter, when especially environment temperature is especially high, and larger deflection can make to hold
Pass action spot size is unstable, and tolerance is larger.In Equations of The Second Kind technical scheme, by the elastic tightening of rubber seal in plastics
In the groove of part.Because rubber seal keeps very big expansion state for a long time, the extension of working time, rubber seal at any time
Elasticity weakens, and causes to switch oil-feed.Simultaneously as the temperature of gearbox may be very high, there is certain oil pressure, when rubber is close
When sealing elasticity weakens, oil also can be inside access switch.
In terms of such scheme, existing various schemes not can solve the problem that rubber in long-term impact and the building ring of high temperature
In border, it is easier to rupture or damages, causes failure.
In order to solve the above problems, present applicant proposes a kind of new scheme.It is different from existing mentality of designing, the application
Using assembly type rubber sealing structure.As shown in Figure 1 to Figure 3, the structure mainly include contact head 402, rubber seal 401,
Elastic component 404 and gasket seal 403.As depicted in figs. 1 and 2, a through hole, the week of the through hole are provided with the middle part of rubber seal
Enclose with a tubulose thickened area 401a.Annular buildup area 401b is provided with rubber seal.The edge of rubber seal bottom
With outward extending flange 401c.As can be seen from Figure 2, contact head has seal face and bar portion, the bar portion through through hole and with
Elastic component (shell fragment) is fixedly connected with gasket seal.It was found from from the enlarged drawing shown in Fig. 3, seal face and rubber seal
Three sealing structures are formed between the lower wall of the annular sidewall of upper side wall, bar portion and through hole, shell fragment and caulking gum part, can
Effectively improve the sealing effectiveness of seal assembly.In a preferred embodiment, the diameter of bar portion is more than the internal diameter of through hole, forms a mistake
It is full of fit structure, further improves the sealing effectiveness of component.In other embodiments, it can be increased by bonding or similar fashion
Plus sealing effectiveness.
In a further embodiment, rubber seal is provided with thickened section with switch case shape adaptation, lug boss
Or kink.
Oil in this scheme, forms double to oil sideways except that can also enter core from side from middle this side oil-feed
Layer sealing, can also enter core to rear portion waterproof.That is, using annular buildup area and/or kink, such as annular increases
Thick area 401b forms double sealing structure with side, can further enhance the sealing effectiveness of rubber seal.Such as Fig. 5 and Fig. 6 institutes
Show, annular buildup area and neighbouring kink form dual or multi-sealing structure, annular buildup area, kink and the housing and
The periphery adaptation of core assembly, the i.e. inner side of shell body, the outside of core assembly have some raised, grooves and/bending, rubber
Seal is pressed in therebetween, and the water or oil of contact head and caulking gum component, trigger mechanism and case inside can be blocked,
It is cannot be introduced into switch internal, form secondary seal.When core assembly is installed with shell body, the lower casing in core assembly
Body one annular boss of formation, the inner side of shell body forms the depressed part being adapted to therewith, after both assemble, and compresses rubber seal
Part, realizes sealing.Multiple sealing structures for bending/having convexed to form polyline shaped, it is possible to increase the sealing effectiveness of seal.
A kind of embodiment of switch core assembly is described with reference to Fig. 4, it is necessary to which explanation, the embodiment is merely illustrative
, it is not intended to limit core anti-oil structure or switchs the scope of core assembly.Switch core anti-oil structure in this application is also
In the switch core assembly that can be applied to other types or other structures.
In this embodiment, switch core assembly mainly includes switch core motion, upper shell 209 and upper shell
Lower house 207, haptic element 3 and the caulking gum component 4 of adaptation.Core motion is switched to be located between upper shell and lower house
In accommodating cavity, rubber seal element is enclosed on the outside of upper shell and seals the joint gap between upper shell and lower house；Haptic element
One end is extended in lower house, and the end is provided with stationary contact.Seal plug 5 is provided with below lower house.Switch core fortune
Motivation structure mainly includes upper cover body 201, lower cover 202, motion bar 203, flexible member 204, movable contact spring 205 and return springs
206。
Wherein upper cover body has hollow boss portion, and upper cover body both sides are symmetrically arranged with positioning hole.The upside of lower cover is symmetrical
Positioning convex is provided with, upper cover body and lower cover are connected by positioning convex and positioning hole.Motion bar, movable contact spring and flexible member
(buffer spring) is arranged between upper cover body and lower cover, and motion bar positioning hole, motion bar are provided with upper cover body and lower cover
Two ends be plugged in wherein, buffer spring is socketed on motion bar, and one end of buffer spring is connected to upper cover body or lower cover
Inner side, the other end is connected on movable contact spring.Movable contact is respectively fixed with the two-arm of movable contact spring.Work is provided with the middle part of movable contact spring
Dynamic hole, motion bar may pass through the hole.
The inner side of lower cover, for example, be provided with raised or sunken portion, the bottom of movable contact spring and side wall on side wall and bottom wall
Depressions or protrusions portion is correspondingly arranged on, the scope of activities of movable contact spring is limited by way of male-female engagement, movable contact spring fortune is improved
Dynamic stability.The exterior bottom of lower cover is symmetrically arranged with boss, and return springs are fixed by socket on the boss.
Above-mentioned switch core assembly is arranged in vehicle-mounted switch, that is, obtains a kind of new vehicle-mounted switch.
As shown in Figure 5 and Figure 6, in a still further embodiment, the present invention further provides the vehicle-mounted switch of one kind.The car
Load switch has above-mentioned switch head trigger mechanism.In addition, in a further embodiment, the vehicle-mounted switch also includes car
Load switch main part 10 and switch core assembly；The first holding part and the second holding part are provided with vehicle-mounted switch main body portion, is opened
Moment portion's trigger mechanism is installed in the first holding part, and the switch core assembly is installed in the second holding part.Vehicle-mounted switch
Main part is mainly a housing, and switch head trigger mechanism and switch core assembly are installed therein.Wherein, core assembly is switched
It is main to include switch core motion, upper shell 209, the lower house 207 being adapted to upper shell, haptic element 3 and caulking gum group
Part.In finished product, one end of expansion link 104 is abutted with contact head 402.
As illustrated, switch core motion is located in the accommodating cavity between upper shell and lower house, rubber seal group
Part is enclosed on the outside of upper shell and seals the joint gap between upper shell and lower house；One end of haptic element is extended in lower house,
The end is provided with stationary contact.Seal plug 5 is provided with below lower house.
Switch core motion is described in detail with reference to Fig. 4, as can be seen from Figure 4, switch core motion mainly includes upper
Lid 201, lower cover 202, motion bar 203, flexible member 204, movable contact spring 205 and return springs 206.
Wherein upper cover body has hollow boss portion, and upper cover body both sides are symmetrically arranged with positioning hole.The upside of lower cover is symmetrical
Positioning convex is provided with, upper cover body and lower cover are connected by positioning convex and positioning hole.Motion bar, movable contact spring and flexible member
(buffer spring) is arranged between upper cover body and lower cover, and motion bar positioning hole, motion bar are provided with upper cover body and lower cover
Two ends be plugged in wherein, buffer spring is socketed on motion bar, and one end of buffer spring is connected to upper cover body or lower cover
Inner side, the other end is connected on movable contact spring.Movable contact is respectively fixed with the two-arm of movable contact spring.Work is provided with the middle part of movable contact spring
Dynamic hole, motion bar may pass through the hole.
The inner side of lower cover, for example, be provided with raised or sunken portion, the bottom of movable contact spring and side wall on side wall and bottom wall
Depressions or protrusions portion is correspondingly arranged on, the scope of activities of movable contact spring is limited by way of male-female engagement, movable contact spring fortune is improved
Dynamic stability.The exterior bottom of lower cover is symmetrically arranged with boss, and return springs are fixed by socket on the boss.
Using boss come retaining spring, make spring position more precisely reliable, it is to avoid spring acts directly on sheet metal, keeps away
Exempt from because spring is in compression process, movable contact spring movement or dislocation, the influence that contact of its spring force to sound contact is powered.Avoid
Spring fatigue, while readily satisfying the requirement of different clients switch motion power.
Lid uses split-type structural up and down, is easy to put buffer spring and alignment pin, so that overall dimensions are compacter,
Core interior space is reduced, model versatility is more preferably；Movable contact spring and spring assembling accurate positioning, it is to avoid movable contact spring or spring are because shaking
It is dynamic to cause dislocation or obscission, improve production efficiency, positioning precision and movable contact spring reliability.Kept using buffer spring to dynamic
The pressure of contact, one is easy for contact adjusting flexibility between sound contact, and two be work when can reduce active and static contact contact
Firmly, the life-span of extension sound contact.
As shown in Figure 5 to Figure 6, haptic element includes plug-in pin and contact, and one end of the plug-in pin has a boss, the boss
Side form a notch part, boss has a blind hole, and the contact grafting is fixed in blind hole；Contact is located at plug-in pin axis
The outside of line.In other words, contact to away from inserting foot axis direction.When two inserting foots are arranged in lower house, lack
The relative part of oral area forms the accommodation space of an expansion, in order to other elements installation and hold, be that this can reduce
Switch overall volume.
As shown in Figure 5 to Figure 6, caulking gum component includes caulking gum part 401 and contact head 402；The caulking gum
Through hole is provided with the middle part of part, there is tubulose thickened area along the circumference of the through hole；Contact head has seal face and bar portion, the bar
Portion is connected through through hole and with gasket seal.The middle part of rubber seal has annular buildup area 401b, and the region and rubber are close
The side of sealing forms dual-seal.Contact head is metal contact.Contact head is interference fitted with rubber seal formation.Sealed end
The first sealing is formed between face and caulking gum part, the second sealing, gasket seal are formed between bar portion and caulking gum part
The 3rd sealing is formed between caulking gum part.First, form three-layer sealed by the mode such as interference fit and riveting, solve
The problems such as prior art oil leak is failed.What is more important, in this structure, the contact head of expansion link and metallic hits,
Without being contacted with rubber seal, therefore the service life of rubber seal is longer, more difficult generation fracture by fatigue.
In a further embodiment, can according to actual conditions select contact material, for example with plastics matter contact,
Composite contact, metal contact etc..Plastics matter contact is by end thermal deformation so as to form fixed structure, thermal deformation with pad
Hot melting way can specifically be used.
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. one kind switch core anti-oil structure, it is characterised in that including：
Caulking gum part, its middle part is provided with through hole, has tubulose thickened area along the circumference of the through hole；
Contact head, with seal face and bar portion, the bar portion is connected through through hole and with gasket seal.
2. switch core anti-oil structure as claimed in claim 1, it is characterised in that the gasket seal and caulking gum part it
Between be provided with shell fragment.
3. as claimed in claim 1 or 2 switch core anti-oil structure, it is characterised in that the contact head be metallic contact,
Composite matter contact or plastics matter contact.
4. core anti-oil structure is switched as claimed in claim 1 or 2, it is characterised in that the diameter of the seal face is little
External diameter in tubulose thickened area.
5. as claimed in claim 1 or 2 switch core anti-oil structure, it is characterised in that the rubber seal be provided with
Thickened section, lug boss or the kink of switch case shape adaptation.
6. core anti-oil structure is switched as claimed in claim 1 or 2, it is characterised in that the diameter of the bar portion is more than through hole
Diameter, formed interference fit.
7. one kind switch core assembly, it is characterised in that including the grease proofing knot of switch core described in any one of claim 1 to 6
Structure.
8. a kind of vehicle-mounted switch, it is characterised in that including the switch core anti-oil structure described in any one of claim 1 to 6.
9. a kind of vehicle-mounted switch, it is characterised in that including the switch core assembly described in claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710126688.1A CN107045957B (en) | 2017-03-03 | 2017-03-03 | Grease proofing structure of switch core, core subassembly and on-vehicle switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710126688.1A CN107045957B (en) | 2017-03-03 | 2017-03-03 | Grease proofing structure of switch core, core subassembly and on-vehicle switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107045957A true CN107045957A (en) | 2017-08-15 |
| CN107045957B CN107045957B (en) | 2020-08-14 |
Family
ID=59544030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710126688.1A Active CN107045957B (en) | 2017-03-03 | 2017-03-03 | Grease proofing structure of switch core, core subassembly and on-vehicle switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107045957B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108320958A (en) * | 2018-01-10 | 2018-07-24 | 东风商用车有限公司 | Sealing structure of auxiliary starting and stopping switch |
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| CN204089415U (en) * | 2014-09-24 | 2015-01-07 | 温州市飞扬电气有限公司 | With the automotive air conditioning fan motor of water-tight device |
| CN204732352U (en) * | 2015-07-02 | 2015-10-28 | 北京佩特来电器有限公司 | A kind of electromagnetic switch and apply the vehicle starter of this electromagnetic switch |
| CN105757334A (en) * | 2016-05-09 | 2016-07-13 | 嘉兴科奥电磁技术有限公司 | Electrical valve dynamic sealing structure and electrical valve thereof |
| CN205692705U (en) * | 2016-06-06 | 2016-11-16 | 锦州凯美能源有限公司 | A kind of super capacitor upper cover |
| CN205752013U (en) * | 2016-06-17 | 2016-11-30 | 上海奉申制冷控制器有限公司 | A kind of differential pressure controller |
| CN106098445A (en) * | 2016-06-30 | 2016-11-09 | 维沃移动通信有限公司 | A kind of press-key structure and electronic equipment |
| CN206546793U (en) * | 2017-03-03 | 2017-10-10 | 漳州聚安美电气科技有限公司 | Switch core anti-oil structure, core assembly and vehicle-mounted switch |
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| CN108320958A (en) * | 2018-01-10 | 2018-07-24 | 东风商用车有限公司 | Sealing structure of auxiliary starting and stopping switch |
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