CN105679582A - Waterproof dustproof steering wheel switch - Google Patents

Waterproof dustproof steering wheel switch Download PDF

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Publication number
CN105679582A
CN105679582A CN201610021132.1A CN201610021132A CN105679582A CN 105679582 A CN105679582 A CN 105679582A CN 201610021132 A CN201610021132 A CN 201610021132A CN 105679582 A CN105679582 A CN 105679582A
Authority
CN
China
Prior art keywords
button
vehicle steering
circuit board
control circuit
steering switch
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
Application number
CN201610021132.1A
Other languages
Chinese (zh)
Other versions
CN105679582B (en
Inventor
田斗星
姚冬梅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Le Star Automotive Technology (Wuxi) Co., Ltd.
Original Assignee
WUXI DAXING ELECTRONICS CO Ltd
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Publication date
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Priority to CN201610021132.1A priority Critical patent/CN105679582B/en
Publication of CN105679582A publication Critical patent/CN105679582A/en
Application granted granted Critical
Publication of CN105679582B publication Critical patent/CN105679582B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02Details
    • H01H13/04Cases; Covers
    • H01H13/06Dustproof, splashproof, drip-proof, waterproof or flameproof casings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00Making granules
    • B29B9/02Making granules by dividing preformed material
    • B29B9/06Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/76Measuring, controlling or regulating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/76Measuring, controlling or regulating
    • B29C45/78Measuring, controlling or regulating of temperature
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L69/00Compositions of polycarbonates; Compositions of derivatives of polycarbonates
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00Apparatus or processes specially adapted for the manufacture of electric switches
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/702Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
    • H01H13/705Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76Measuring, controlling or regulating
    • B29C2945/76494Controlled parameter
    • B29C2945/76531Temperature
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76Measuring, controlling or regulating
    • B29C2945/76494Controlled parameter
    • B29C2945/76551Time
    • B29C2945/76561Time duration
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76Measuring, controlling or regulating
    • B29C2945/76655Location of control
    • B29C2945/76732Mould
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00Specific properties of additives
    • C08K2201/011Nanostructured additives
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/03Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/14Polymer mixtures characterised by other features containing polymeric additives characterised by shape
    • C08L2205/16Fibres; Fibrils

Abstract

The invention relates to a waterproof dustproof steering wheel switch. The waterproof dustproof steering wheel switch comprises a substrate, an insulating thin film and keys, wherein heating sheets are embedded in the substrate; a control circuit board is mounted on the upper surface of the substrate; the control circuit board is connected with at least a microswitch; the control circuit board is covered with the insulating thin film; the keys are mounted above the insulating thin film close to the microswitches; the lower ends of the keys are close to the upper ends of the microswitches; parting strips are arranged between the keys; a compression spring is arranged between the keys and the substrate; clamping hooks are arranged at the lower ends of the keys; limiting clamping boards matched with the clamping hooks are fabricated on the substrate; and limiting clamping hooks are arranged at the upper ends of the limiting clamping boards. According to the waterproof dustproof steering wheel switch, the control circuit board is covered with the insulating thin film, so that the waterproof performance of the waterproof dustproof steering wheel switch is effectively improved, the switch failure caused by water in the control circuit board can be effectively prevented, and the service life of the steering wheel switch is prolonged.

Description

A kind of water proof and dust proof vehicle steering switch
Technical field
The present invention relates to a kind of water proof and dust proof vehicle steering switch, belong to switching arrangement technical field.
Background technology
Along with the development of science and technology, the annex of automobile auxiliary gets more and more, and automobile auxiliary ground annex has and can provide comfortable driving environment for the officer in automobile or passenger. When driving, these annexes provide convenient for officer or passenger, but simultaneously adjoint severe problem is the driving concentrated force decline of officer and hinders safe driving. Due to this reason, the bearing circle of automobile is intensively installed various switching arrangement.
At present, from high-grade automobile to common automobile, its bearing circle is all provided with various cabinet switch button, vehicle steering teleswitch is used always to become, driving person can be made when both hands hold bearing circle, conveniently handle safely peripheral equipment, not only it is possible to prevent to disperse sight line to handle peripheral equipment, thus disperse driving person's energy, and when holding bearing circle, realize the accessibility to operation of equipment by pressing switching push button easily, thus become indispensable device on high-grade automobile and be widely used.
If officer because of carelessness by water on the steering wheel when drinking water, or is stopped and forgotten that closing window makes rainwater be splashed into bearing circle, although vehicle switch generally has certain water-proof function, still may having part water, to be seeped into vehicle steering switch inner. General bearing circle switch is closure design, and the moisture content being gathered in bearing circle switch inside does not leak in time, evaporates steam in inside, it is easy to causes the faults such as circuit burn into short circuit, affects reliability.
Summary of the invention
The technical problem to be solved in the present invention is, not enough for prior art, it is proposed to a kind of water resistance is good and the water proof and dust proof vehicle steering switch of long service life.
The present invention is the technical scheme solving the problems of the technologies described above proposition: a kind of water proof and dust proof vehicle steering switch, comprise substrate, insulation film and button, heating piece it is embedded with in substrate, upper surface of base plate is provided with control circuit board, control circuit board is connected with at least one vernier switch, insulation film covers on control circuit board, button is arranged on above insulation film near vernier switch place, the lower end of button and vernier switch upper end are close, parting bead also it is provided with between button, compression spring it is provided with between button and substrate, the lower end of button is shaped with card and hooks, substrate is shaped with the spacing clamp hooking with card and mating mutually, spacing clamp upper end is provided with spacing card and hooks,
In button, the mass percent of each composition is: ethylene-vinyl acetate copolymer: 0.75-0.86%, nanometer aluminium powder: 0.36-0.43%, nano zinc powder: 0.25-0.31%, nano silicon: 0.58-0.66%, fatty alcohol-polyoxyethylene ether: 0.16-0.33%, vinylformic acid: 0.17-0.26%, 1-Methoxy-2-propyl acetate: 0.29-0.44%, peroxidized t-butyl perbenzoate: 0.57-0.71%, tert-butyl hydroperoxide 2-ethylhexyl carbonate: 0.47-0.64%, 3-aminopropyl triethoxysilane: 0.66-73%, 3,5-di-tert-butyl-4-hydroxybenzoic acid cetyl ester: 0.12-0.24%, butyl rubber: 0.69-0.76%, diatomite: 0.33-0.45%, sorbitan fatty acid ester: 0.41-0.53%, acrylate: 0.85-0.92%, vinylbenzene: 0.34-0.57%, peroxidation butylacetate: 0.65-0.82%, Magnesium Stearate: 0.25-33%, yellow humic acid iron: 0.22-0.33%, calcium oxide: 0.42-0.53%, magnesium oxide: 0.35-0.47%, glass fibre: 0.26-0.57%, methyl ethyl diketone: 0.28-0.47%, polyamide resin: 0.48-0.67%, epoxy resin: 0.18-0.23%, vinyltrimethoxy silane: 0.33-0.39%, hydroxy silicon oil: 0.08-0.13%, bombax cotton: 0.35-0.64%, trevira: 0.67-0.72%, polyster fibre: 0.33-0.39%, polyoxymethylene resin: 1.13-1.22%, polyethylene terephthalate: 2.35-2.39%, polypropylene: 1.26-1.37%, surplus is poly-carbonic acid tree ester,
The complete processing of button comprises the following steps:
(i) pulverize: use pulverizer tentatively to be pulverized respectively by the raw material of above-mentioned button;
(ii) mixing and ball milling: raw material being put into mixing and ball milling instrument by mass percentage and carries out mixing and ball milling, after mixing and ball milling, the particle diameter of raw material is between 800-2500 order;
(iii) mix: by step (ii) the product of mixing and ball milling drop in reactor and be heated to 75-95 DEG C, stir 25-30min, stirring velocity 900-1200 rev/min;
(iv) extrude: by step (iii) gained mixture pour mixing granulator in double-screw extruding pelletizing machine into and make button injection moulding material, twin screw extruder is divided into three sections, i.e. entrance section, middle section and outlet section, and its temperature is controlled as: 90-95 DEG C, 112-152 DEG C, 89-93 DEG C;
(v) shaping: adopting double-shot moulding machine to carry out injection moulding, control at 180-210 DEG C when injection moulding to the temperature of mould cavity injection moulding, shaping cycle controlled in the 125-130 second, and the interval time of twice injection moulding is not less than 60 seconds;
(vi) corrosion-resistant finishes is applied: adopting the coating processes that surface treatment-bottoming-scale glue coating-face is coated with, concrete technique is:
Surface treatment: sandblasting or with angle grinding machine by button surface finish alligatoring, and remove the dust on base face, greasy dirt, moisture, make surface expose base material;
Bottoming: the pore in the construction surface of button, pitted skin anticorrosive adhesive are clogged closely knit, then applies BD417 corrosion protection coating glue as primary coat;
Scale glue applies: after solid at the beginning of primary coat, BD418 scale anticorrosion coating adhesive is coated on above primary coat, scrapes painting to a direction, just can be coated with next layer after solid at the beginning of front layer scale coating adhesive;
Face is coated with: apply BD417 corrosion protection coating glue as surface layer after solid at the beginning of last layer of scale coating adhesive.
The improvement of technique scheme is: insulation film and control circuit board sealing are arranged.
The improvement of technique scheme is: substrate edge has been offered and led water groove.
The improvement of technique scheme is: vernier switch is five, and parting bead has two.
The improvement of technique scheme is: the zygomorphy of the lower end of button is shaped with two cards and hooks.
The improvement of technique scheme is: in button, the mass percent of each composition is: ethylene-vinyl acetate copolymer: 0.79%, nanometer aluminium powder: 0.38%, nano zinc powder: 0.27%, nano silicon: 0.59%, fatty alcohol-polyoxyethylene ether: 0.17%, vinylformic acid: 0.18%, 1-Methoxy-2-propyl acetate: 0.31%, peroxidized t-butyl perbenzoate: 0.58%, tert-butyl hydroperoxide 2-ethylhexyl carbonate: 0.49%, 3-aminopropyl triethoxysilane: 0.67%, 3,5-di-tert-butyl-4-hydroxybenzoic acid cetyl ester: 0.13%, butyl rubber: 0.69%, diatomite: 0.34%, sorbitan fatty acid ester: 0.42%, acrylate: 0.85%, vinylbenzene: 0.34%, peroxidation butylacetate: 0.67%, Magnesium Stearate: 0.26%, yellow humic acid iron: 0.23%, calcium oxide: 0.42%, magnesium oxide: 0.36%, glass fibre: 0.29%, methyl ethyl diketone: 0.32%, polyamide resin: 0.53%, epoxy resin: 0.18%, vinyltrimethoxy silane: 0.34%, hydroxy silicon oil: 0.08%, bombax cotton: 0.36%, trevira: 0.69%, polyster fibre: 0.33%, polyoxymethylene resin: 1.15%, polyethylene terephthalate: 2.36%, polypropylene: 1.28%, surplus is poly-carbonic acid tree ester.
The improvement of technique scheme is: in button, the mass percent of each composition is: ethylene-vinyl acetate copolymer: 0.85%, nanometer aluminium powder: 0.42%, nano zinc powder: 0.31%, nano silicon: 0.64%, fatty alcohol-polyoxyethylene ether: 0.32%, vinylformic acid: 0.25%, 1-Methoxy-2-propyl acetate: 0.43%, peroxidized t-butyl perbenzoate: 0.71%, tert-butyl hydroperoxide 2-ethylhexyl carbonate: 0.62%, 3-aminopropyl triethoxysilane: 0.71%, 3,5-di-tert-butyl-4-hydroxybenzoic acid cetyl ester: 0.19%, butyl rubber: 0.73%, diatomite: 0.42%, sorbitan fatty acid ester: 0.52%, acrylate: 0.91%, vinylbenzene: 0.56%, peroxidation butylacetate: 0.81%, Magnesium Stearate: 0.32%, yellow humic acid iron: 0.27%, calcium oxide: 0.52%, magnesium oxide: 0.45%, glass fibre: 0.57%, methyl ethyl diketone: 0.44%, polyamide resin: 0.62%, epoxy resin: 0.22%, vinyltrimethoxy silane: 0.37%, hydroxy silicon oil: 0.13%, bombax cotton: 0.61%, trevira: 0.71%, polyster fibre: 0.38%, polyoxymethylene resin: 1.21%, polyethylene terephthalate: 2.38%, polypropylene: 1.37%, surplus is poly-carbonic acid tree ester.
The improvement of technique scheme is: step (iii) in reactor Heating temperature be 85 DEG C, stir 27min, stirring velocity 1100 revs/min.
The improvement of technique scheme is: step (iv) in, in twin screw extruder, the temperature of three sections is controlled as: 95 DEG C, 135 DEG C, 90 DEG C.
The improvement of technique scheme is: step (v) in, control at 190 DEG C when injection moulding to the temperature of mould cavity injection moulding, shaping cycle controls at 130 seconds, and the interval time of twice injection moulding is not less than 60 seconds.
The present invention adopts the useful effect of technique scheme to be: (1) is owing to being coated with insulation film on control circuit board, effectively improve the water resistance of water proof and dust proof vehicle steering switch, can also prevent dust from entering control circuit board simultaneously, can effectively prevent from the water inlet of control circuit board place or cover dirt causing switch failure, extend work-ing life; (2) owing to being embedded with heating piece in substrate, when water proof and dust proof vehicle steering switch place is wet by water, heating piece can be opened, water proof and dust proof vehicle steering switch is heated, make water rapid evaporation, ensureing the drying at water proof and dust proof vehicle steering switch place, the significant points preventing water from infiltrating in switch causes switch failure; (3) button of this batching has high temperature resistant, corrosion-resistant, light weight and the high advantage of intensity, the button of the water proof and dust proof vehicle steering switch of the present invention adds nanometer aluminium powder and nano zinc powder etc., effectively improve the heat-resisting of button and corrosion resistance nature, prevent when opening heating piece, button is due to the too high generation oxidation of temperature or is corroded, and extends the work-ing life of water proof and dust proof vehicle steering switch; (4) owing to the button of the water proof and dust proof vehicle steering switch of the present invention adding nano silicon, significantly improve the mechanical property of button, extend work-ing life; (5) raw material of the button of the water proof and dust proof vehicle steering switch of the present invention is by pulverizing, mixing and ball milling, the step that mixes and extrude, raw material is fully smashed mixing, the button injection moulding material quality obtained is closely even, what obtain after making injection moulding is higher by bonding strength, and corrosion-and high-temp-resistant performance is better; (6) owing to adopting double-shot moulding machine to carry out injection moulding, reduce shaping product unrelieved stress, increase the surface properties of physical strength and product, it is not necessary to follow-up spraying radium carving; (7) due to button surface-coated corrosion-resistant finishes, further increase corrosion resistance nature, extend work-ing life; (8) offered due to substrate edge and led water groove, it is possible to the water at water proof and dust proof vehicle steering switch place is discharged rapidly, and arranged due to insulation film and control circuit board sealing, effectively prevented water from infiltrating control circuit board place and cause switch to damage; (9) owing to being also provided with parting bead between button, can effectively prevent dust and water from entering control circuit board from side, prevent from the water inlet of control circuit board place or cover dirt causing switch failure, extend work-ing life; (10) hooked by card and the cooperation of spacing clamp can prevent button from coming off, thus prevent the button circuit card place caused that comes off from intaking into ash.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described:
Fig. 1 is the blast structural representation of embodiment of the present invention water proof and dust proof vehicle steering switch;
Fig. 2 is the structural representation of the substrate of embodiment of the present invention water proof and dust proof vehicle steering switch;
Fig. 3 is the partial enlargement figure at the button place of embodiment of the present invention water proof and dust proof vehicle steering switch;
Wherein: 1-button;1a-card hooks; 2-insulation film; 3-control circuit board; 4-substrate; 5-leads water groove; 6-heating piece; 7-parting bead; 8-compression spring; 9-vernier switch; The spacing clamp of 10-.
Embodiment
Embodiment one
The water proof and dust proof vehicle steering switch of the present embodiment, as illustrated in fig. 1 and 2, comprise substrate 4, insulation film 2 and five buttons 1, heating piece 6 it is embedded with in substrate 4, substrate 4 upper surface is provided with control circuit board 3, control circuit board 3 is connected with five vernier switches 9, insulation film 2 covers on control circuit board 3, five buttons 1 are arranged on above insulation film 2 respectively near five vernier switch 9 places, button 1 time end and vernier switch 9 upper end are close, two parting beads 7 also it are provided with between button 1, compression spring 8 it is provided with between button 1 and substrate 4, the zygomorphy of button 1 time end is shaped with two cards and hooks 1a, substrate 4 is shaped with the spacing clamp 10 hooking 1a phase mate with card, spacing clamp 10 upper end is provided with spacing card and hooks, insulation film 2 seals with control circuit board 3 and arranges, even interval, substrate 4 edge has been offered and has been led water groove 5,
In button, the mass percent of each composition is: ethylene-vinyl acetate copolymer: 0.79%, nanometer aluminium powder: 0.38%, nano zinc powder: 0.27%, nano silicon: 0.59%, fatty alcohol-polyoxyethylene ether: 0.17%, vinylformic acid: 0.18%, 1-Methoxy-2-propyl acetate: 0.31%, peroxidized t-butyl perbenzoate: 0.58%, tert-butyl hydroperoxide 2-ethylhexyl carbonate: 0.49%, 3-aminopropyl triethoxysilane: 0.67%, 3,5-di-tert-butyl-4-hydroxybenzoic acid cetyl ester: 0.13%, butyl rubber: 0.69%, diatomite: 0.34%, sorbitan fatty acid ester: 0.42%, acrylate: 0.85%, vinylbenzene: 0.34%, peroxidation butylacetate: 0.67%, Magnesium Stearate: 0.26%, yellow humic acid iron: 0.23%, calcium oxide: 0.42%, magnesium oxide: 0.36%, glass fibre: 0.29%, methyl ethyl diketone: 0.32%, polyamide resin: 0.53%, epoxy resin: 0.18%, vinyltrimethoxy silane: 0.34%, hydroxy silicon oil: 0.08%, bombax cotton: 0.36%, trevira: 0.69%, polyster fibre: 0.33%, polyoxymethylene resin: 1.15%, polyethylene terephthalate: 2.36%, polypropylene: 1.28%, surplus is poly-carbonic acid tree ester,
The complete processing of button comprises the following steps:
(i) pulverize: use pulverizer tentatively to be pulverized respectively by the raw material of above-mentioned button;
(ii) mixing and ball milling: raw material being put into mixing and ball milling instrument by mass percentage and carries out mixing and ball milling, after mixing and ball milling, the particle diameter of raw material is between 800-2500 order;
(iii) mix: by step (ii) the product of mixing and ball milling drop in reactor and be heated to 75-95 DEG C, stir 25-30min, stirring velocity 900-1200 rev/min;
(iv) extrude: by step (iii) gained mixture pour mixing granulator in double-screw extruding pelletizing machine into and make button injection moulding material, twin screw extruder is divided into three sections, i.e. entrance section, middle section and outlet section, and its temperature is controlled as: 90-95 DEG C, 112-152 DEG C, 89-93 DEG C;
(v) shaping: adopting double-shot moulding machine to carry out injection moulding, control at 180-210 DEG C when injection moulding to the temperature of mould cavity injection moulding, shaping cycle controlled in the 125-130 second, and the interval time of twice injection moulding is not less than 60 seconds;
(vi) corrosion-resistant finishes is applied: adopting the coating processes that surface treatment-bottoming-scale glue coating-face is coated with, concrete technique is:
Surface treatment: sandblasting or with angle grinding machine by button surface finish alligatoring, and remove the dust on base face, greasy dirt, moisture, make surface expose base material;
Bottoming: the pore in the construction surface of button, pitted skin anticorrosive adhesive are clogged closely knit, then applies BD417 corrosion protection coating glue as primary coat;
Scale glue applies: after solid at the beginning of primary coat, BD418 scale anticorrosion coating adhesive is coated on above primary coat, scrapes painting to a direction, just can be coated with next layer after solid at the beginning of front layer scale coating adhesive;
Face is coated with: apply BD417 corrosion protection coating glue as surface layer after solid at the beginning of last layer of scale coating adhesive.
The water proof and dust proof vehicle steering switch of the present embodiment is in use, owing to control circuit board being coated with insulation film, effectively improve the water resistance of water proof and dust proof vehicle steering switch, can effectively prevent the water inlet of control circuit board place from causing switch failure, extend work-ing life; Owing to being embedded with heating piece in substrate, when water proof and dust proof vehicle steering switch place is wet by water, heating piece can be opened, water proof and dust proof vehicle steering switch is heated, make water rapid evaporation, ensureing the drying at water proof and dust proof vehicle steering switch place, the significant points preventing water from infiltrating in switch causes switch failure; Offer due to substrate edge and led water groove, it is possible to the water at water proof and dust proof vehicle steering switch place is discharged rapidly, and due to insulation film and control circuit board sealing setting, effectively prevented water from infiltrating control circuit board place and cause switch to damage; Owing to being also provided with parting bead between button, can effectively prevent dust and water from entering control circuit board from side, prevent from the water inlet of control circuit board place or cover dirt causing switch failure, extend work-ing life; Hooked by card and the cooperation of spacing clamp can prevent button from coming off, thus prevent the button circuit card place caused that comes off from intaking into ash.
Embodiment two
The water proof and dust proof vehicle steering switch of the present embodiment and embodiment one are substantially identical, and the mass percent that difference is in button each composition is: ethylene-vinyl acetate copolymer: 0.85%, nanometer aluminium powder: 0.42%, nano zinc powder: 0.31%, nano silicon: 0.64%, fatty alcohol-polyoxyethylene ether: 0.32%, vinylformic acid: 0.25%, 1-Methoxy-2-propyl acetate: 0.43%, peroxidized t-butyl perbenzoate: 0.71%, tert-butyl hydroperoxide 2-ethylhexyl carbonate: 0.62%, 3-aminopropyl triethoxysilane: 0.71%, 3,5-di-tert-butyl-4-hydroxybenzoic acid cetyl ester: 0.19%, butyl rubber: 0.73%, diatomite: 0.42%, sorbitan fatty acid ester: 0.52%, acrylate: 0.91%, vinylbenzene: 0.56%, peroxidation butylacetate: 0.81%, Magnesium Stearate: 0.32%, yellow humic acid iron: 0.27%, calcium oxide: 0.52%, magnesium oxide: 0.45%, glass fibre: 0.57%, methyl ethyl diketone: 0.44%, polyamide resin: 0.62%, epoxy resin: 0.22%, vinyltrimethoxy silane: 0.37%, hydroxy silicon oil: 0.13%, bombax cotton: 0.61%, trevira: 0.71%, polyster fibre: 0.38%, polyoxymethylene resin: 1.21%, polyethylene terephthalate: 2.38%, polypropylene: 1.37%, surplus is poly-carbonic acid tree ester.
The present invention is not limited to above-described embodiment. All employings are equal to the technical scheme replaced and formed, and all drop on the protection domain of requirement of the present invention.

Claims (10)

1. a water proof and dust proof vehicle steering switch, it is characterized in that: comprise substrate, insulation film and button, it is embedded with heating piece in described substrate, described upper surface of base plate is provided with control circuit board, described control circuit board is connected with at least one vernier switch, described insulation film covers on described control circuit board, described button is arranged on above described insulation film near described vernier switch place, the lower end of described button and described vernier switch upper end are close, parting bead also it is provided with between described button, it is provided with compression spring between described button and described substrate, the lower end of described button is shaped with card and hooks, described substrate is shaped with and hooks, with described card, the spacing clamp mated mutually, described spacing clamp upper end is provided with spacing card and hooks,
In described button, the mass percent of each composition is: ethylene-vinyl acetate copolymer: 0.75-0.86%, nanometer aluminium powder: 0.36-0.43%, nano zinc powder: 0.25-0.31%, nano silicon: 0.58-0.66%, fatty alcohol-polyoxyethylene ether: 0.16-0.33%, vinylformic acid: 0.17-0.26%, 1-Methoxy-2-propyl acetate: 0.29-0.44%, peroxidized t-butyl perbenzoate: 0.57-0.71%, tert-butyl hydroperoxide 2-ethylhexyl carbonate: 0.47-0.64%, 3-aminopropyl triethoxysilane: 0.66-73%, 3,5-di-tert-butyl-4-hydroxybenzoic acid cetyl ester: 0.12-0.24%, butyl rubber: 0.69-0.76%, diatomite: 0.33-0.45%, sorbitan fatty acid ester: 0.41-0.53%, acrylate: 0.85-0.92%, vinylbenzene: 0.34-0.57%, peroxidation butylacetate: 0.65-0.82%, Magnesium Stearate: 0.25-33%, yellow humic acid iron: 0.22-0.33%, calcium oxide: 0.42-0.53%, magnesium oxide: 0.35-0.47%, glass fibre: 0.26-0.57%, methyl ethyl diketone: 0.28-0.47%, polyamide resin: 0.48-0.67%, epoxy resin: 0.18-0.23%, vinyltrimethoxy silane: 0.33-0.39%, hydroxy silicon oil: 0.08-0.13%, bombax cotton: 0.35-0.64%, trevira: 0.67-0.72%, polyster fibre: 0.33-0.39%, polyoxymethylene resin: 1.13-1.22%, polyethylene terephthalate: 2.35-2.39%, polypropylene: 1.26-1.37%, surplus is poly-carbonic acid tree ester,
The complete processing of described button comprises the following steps:
(i) pulverize: use pulverizer tentatively to be pulverized respectively by the raw material of above-mentioned button;
(ii) mixing and ball milling: by described mass percent, raw material being put into mixing and ball milling instrument and carries out mixing and ball milling, after mixing and ball milling, the particle diameter of raw material is between 800-2500 order;
(iii) mix: by step (ii) the product of mixing and ball milling drop in reactor and be heated to 75-95 DEG C, stir 25-30min, stirring velocity 900-1200 rev/min;
(iv) extrude: by step (iii) gained mixture pour mixing granulator in double-screw extruding pelletizing machine into and make button injection moulding material, twin screw extruder is divided into three sections, i.e. entrance section, middle section and outlet section, and its temperature is controlled as: 90-95 DEG C, 112-152 DEG C, 89-93 DEG C;
(v) shaping: adopting double-shot moulding machine to carry out injection moulding, control at 180-210 DEG C when injection moulding to the temperature of mould cavity injection moulding, shaping cycle controlled in the 125-130 second, and the interval time of twice injection moulding is not less than 60 seconds;
(vi) corrosion-resistant finishes is applied: adopting the coating processes that surface treatment-bottoming-scale glue coating-face is coated with, concrete technique is:
Surface treatment: sandblasting or with angle grinding machine by button surface finish alligatoring, and remove the dust on base face, greasy dirt, moisture, make surface expose base material;
Bottoming: the pore in the construction surface of button, pitted skin anticorrosive adhesive are clogged closely knit, then applies BD417 corrosion protection coating glue as primary coat;
Scale glue applies: after solid at the beginning of primary coat, BD418 scale anticorrosion coating adhesive is coated on above primary coat, scrapes painting to a direction, just can be coated with next layer after solid at the beginning of front layer scale coating adhesive;
Face is coated with: apply BD417 corrosion protection coating glue as surface layer after solid at the beginning of last layer of scale coating adhesive.
2. water proof and dust proof vehicle steering switch according to claim 1, it is characterised in that: described insulation film and the sealing of described control circuit board are arranged.
3. water proof and dust proof vehicle steering switch according to claim 2, it is characterised in that: described substrate edge has been offered and has been led water groove.
4. water proof and dust proof vehicle steering switch according to claim 3, it is characterised in that: described vernier switch is five, and described parting bead has two.
5. water proof and dust proof vehicle steering switch according to claim 4, it is characterised in that: the zygomorphy of the lower end of described button is shaped with two cards and hooks.
6. water proof and dust proof vehicle steering switch according to claim 5, it is characterised in that: in described button, the mass percent of each composition is: ethylene-vinyl acetate copolymer: 0.79%, nanometer aluminium powder: 0.38%, nano zinc powder: 0.27%, nano silicon: 0.59%, fatty alcohol-polyoxyethylene ether: 0.17%, vinylformic acid: 0.18%, 1-Methoxy-2-propyl acetate: 0.31%, peroxidized t-butyl perbenzoate: 0.58%, tert-butyl hydroperoxide 2-ethylhexyl carbonate: 0.49%, 3-aminopropyl triethoxysilane: 0.67%, 3,5-di-tert-butyl-4-hydroxybenzoic acid cetyl ester: 0.13%, butyl rubber: 0.69%, diatomite: 0.34%, sorbitan fatty acid ester: 0.42%, acrylate: 0.85%, vinylbenzene: 0.34%, peroxidation butylacetate: 0.67%, Magnesium Stearate: 0.26%, yellow humic acid iron: 0.23%, calcium oxide: 0.42%, magnesium oxide: 0.36%, glass fibre: 0.29%, methyl ethyl diketone: 0.32%, polyamide resin: 0.53%, epoxy resin: 0.18%, vinyltrimethoxy silane: 0.34%, hydroxy silicon oil: 0.08%, bombax cotton: 0.36%, trevira: 0.69%, polyster fibre: 0.33%, polyoxymethylene resin: 1.15%, polyethylene terephthalate: 2.36%, polypropylene: 1.28%, surplus is poly-carbonic acid tree ester.
7. water proof and dust proof vehicle steering switch according to claim 5, it is characterised in that: in described button, the mass percent of each composition is: ethylene-vinyl acetate copolymer: 0.85%, nanometer aluminium powder: 0.42%, nano zinc powder: 0.31%, nano silicon: 0.64%, fatty alcohol-polyoxyethylene ether: 0.32%, vinylformic acid: 0.25%, 1-Methoxy-2-propyl acetate: 0.43%, peroxidized t-butyl perbenzoate: 0.71%, tert-butyl hydroperoxide 2-ethylhexyl carbonate: 0.62%, 3-aminopropyl triethoxysilane: 0.71%, 3,5-di-tert-butyl-4-hydroxybenzoic acid cetyl ester: 0.19%, butyl rubber: 0.73%, diatomite: 0.42%, sorbitan fatty acid ester: 0.52%, acrylate: 0.91%, vinylbenzene: 0.56%, peroxidation butylacetate: 0.81%, Magnesium Stearate: 0.32%, yellow humic acid iron: 0.27%, calcium oxide: 0.52%, magnesium oxide: 0.45%, glass fibre: 0.57%, methyl ethyl diketone: 0.44%, polyamide resin: 0.62%, epoxy resin: 0.22%, vinyltrimethoxy silane: 0.37%, hydroxy silicon oil: 0.13%, bombax cotton: 0.61%, trevira: 0.71%, polyster fibre: 0.38%, polyoxymethylene resin: 1.21%, polyethylene terephthalate: 2.38%, polypropylene: 1.37%, surplus is poly-carbonic acid tree ester.
8. water proof and dust proof vehicle steering switch according to claim 1, it is characterised in that: described step (iii) in reactor Heating temperature be 85 DEG C, stir 27min, stirring velocity 1100 revs/min.
9. water proof and dust proof vehicle steering switch according to claim 1, it is characterised in that: described (iv) in, in twin screw extruder, the temperature of three sections is controlled as: 95 DEG C, 135 DEG C, 90 DEG C.
10. water proof and dust proof vehicle steering switch according to claim 1, it is characterized in that: described step (v) in, controlling at 190 DEG C when injection moulding to the temperature of mould cavity injection moulding, shaping cycle controls at 130 seconds, and the interval time of twice injection moulding is not less than 60 seconds.
CN201610021132.1A 2016-01-13 2016-01-13 A kind of water proof and dust proof vehicle steering wheel switch Active CN105679582B (en)

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Publication number Priority date Publication date Assignee Title
CN107104008A (en) * 2017-05-17 2017-08-29 乐星汽车电子(无锡)有限公司 A kind of waterproof automobile seat heating switching
CN107118508A (en) * 2017-05-17 2017-09-01 乐星汽车电子(无锡)有限公司 A kind of anti-static and abrasion-resistant vehicle steering switch
CN108793764A (en) * 2018-07-02 2018-11-13 黄长青 The surface treatment method and glassware of glassware
CN112951637A (en) * 2021-02-05 2021-06-11 方玄 Integrated form light weight type motion control case

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CN204537908U (en) * 2015-04-30 2015-08-05 湖北中生汽车电器有限公司 A kind of steering wheel for vehicle switch
CN105038018A (en) * 2015-07-24 2015-11-11 南通慧源塑胶有限公司 Thin-film material with high hydrolytic property

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Publication number Priority date Publication date Assignee Title
CN1906977A (en) * 2004-02-18 2007-01-31 信越聚合物公司 EL sheet and component for lighting type push-button switch
JP4194963B2 (en) * 2004-03-11 2008-12-10 信越ポリマー株式会社 Manufacturing method for illumination type pushbutton switch member
CN103269852A (en) * 2010-10-25 2013-08-28 拜耳知识产权有限责任公司 Multilayer plastic structure having low energy transmission
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* Cited by examiner, † Cited by third party
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CN107104008A (en) * 2017-05-17 2017-08-29 乐星汽车电子(无锡)有限公司 A kind of waterproof automobile seat heating switching
CN107118508A (en) * 2017-05-17 2017-09-01 乐星汽车电子(无锡)有限公司 A kind of anti-static and abrasion-resistant vehicle steering switch
CN108793764A (en) * 2018-07-02 2018-11-13 黄长青 The surface treatment method and glassware of glassware
CN112951637A (en) * 2021-02-05 2021-06-11 方玄 Integrated form light weight type motion control case

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