CN105679582B - A kind of water proof and dust proof vehicle steering wheel switch - Google Patents
A kind of water proof and dust proof vehicle steering wheel switch Download PDFInfo
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- CN105679582B CN105679582B CN201610021132.1A CN201610021132A CN105679582B CN 105679582 B CN105679582 B CN 105679582B CN 201610021132 A CN201610021132 A CN 201610021132A CN 105679582 B CN105679582 B CN 105679582B
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- key
- steering wheel
- vehicle steering
- butyl
- water proof
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-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/78—Measuring, controlling or regulating of temperature
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
-
- 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
- H01H13/70—Switches 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
- H01H13/702—Switches 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
- H01H13/705—Switches 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76531—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76551—Time
- B29C2945/76561—Time duration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76655—Location of control
- B29C2945/76732—Mould
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The present invention relates to a kind of water proof and dust proof vehicle steering wheel switches, including substrate, insulation film and key, heating sheet is embedded in the substrate, the upper surface of base plate is equipped with control circuit board, the control circuit board is connected at least one microswitch, the insulation film is covered in the control circuit board, the key is mounted on above the insulation film at the microswitch, key lower end is close with microswitch upper end, parting bead is additionally provided between key, compressed spring is provided between key and substrate, key lower end is formed with hook, the limit card board to match with hook is formed on substrate, limit card board upper end is provided with limit hook；Water proof and dust proof vehicle steering wheel switch of the invention effectively increases the waterproof performance of water proof and dust proof vehicle steering wheel switch, can effectively prevent water inlet at control circuit board leads to switch failure, extends service life due to being covered with insulation film in control circuit board.
Description
Technical field
The present invention relates to a kind of water proof and dust proof vehicle steering wheel switches, belong to switching device technical field.
Background technique
With the development of science and technology, the attachment of automobile auxiliary is more and more, automobile auxiliary attachment have can be in automobile
Driver or passenger provide comfortable driving environment.When driving, these attachmentes provide convenience for driver or passenger, but companion simultaneously
With serious problem be driver driving concentrated force decline and interfere safe driving.Due to this reason, the steering wheel of automobile
On various switching devices are intensively installed.
Currently, being fitted with various manipulation switch buttons from superior automobile to general-utility car, on steering wheel, automobile is used
Steering wheel remote control switch assembly, can make driver in the state of both hands hold steering wheel, conveniently safely manipulate periphery
Equipment can not only prevent from dispersing sight to manipulate peripheral equipment, to disperse driver's energy, and hold direction
It in the state of disk, facilitates the operation of the equipment, thus becomes on superior automobile by easily pressing the switch button
Indispensable device and be widely used.
If driver drinking-water when accidentally by water on the steering wheel, or parking forget close window make the rainwater side of being splashed into
To disk, although vehicle switch generally has certain water-proof function, it still might have part water and be seeped into vehicle steering wheel switch
It is internal.General steering wheel switch is closure design, is gathered in the moisture content inside steering wheel switch and does not leak in time, inside
Steam is evaporated in portion, be easy to cause the failures such as circuit etch, short circuit, influences reliability.
Summary of the invention
The technical problem to be solved by the present invention is in view of the shortcomings of the prior art, propose that a kind of waterproof performance is good and uses
The water proof and dust proof vehicle steering wheel switch of service life length.
The technical solution that the present invention proposes to solve above-mentioned technical problem is：A kind of water proof and dust proof vehicle steering wheel switch,
Including substrate, insulation film and key, heating sheet is embedded in substrate, upper surface of base plate is equipped with control circuit board, control electricity
Road plate is connected at least one microswitch, and insulation film is covered in control circuit board, and key is mounted on above insulation film
At the microswitch, key lower end is close with microswitch upper end, is additionally provided with parting bead between key, key and substrate it
Between be provided with compressed spring, key lower end is formed with hook, the limit card board to match with hook is formed on substrate, in limit card board
End is provided with limit hook；
The mass percent of each ingredient is in key：Ethylene-vinyl acetate copolymer:0.75-0.86%, nanometer aluminium powder:
0.36-0.43%, nano zinc powder:0.25-0.31%, nano silica:0.58-0.66%, fatty alcohol polyoxyethylene ether:
0.16-0.33%, acrylic acid:0.17-0.26%, propylene glycol methyl ether acetate:The tertiary fourth of 0.29-0.44%, perbenzoic acid
Ester: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%, benzene second
Alkene：0.34-0.57%, peracetic acid butyl ester：0.65-0.82%, magnesium stearate：0.25-33%, fulvic acid iron：0.22-
0.33%, calcium oxide：0.42-0.53%, magnesia：0.35-0.47%, glass fibre：0.26-0.57%, acetylacetone,2,4-pentanedione：
0.28-0.47%, polyamide：0.48-0.67%, epoxy resin：0.18-0.23%, vinyltrimethoxysilane：
0.33-0.39%, hydroxy silicon oil：0.08-0.13%, bombax cotton：0.35-0.64%, polyester fiber：0.67-0.72%, it washs
Synthetic fibre fiber：0.33-0.39%, polyoxymethylene resin：1.13-1.22%, polyethylene terephthalate：2.35-2.39%, gather
Propylene：1.26-1.37%, surplus are poly- carbonic acid resin；
The processing technology of key includes the following steps：
(i) it crushes：The raw material of above-mentioned key is tentatively crushed respectively using pulverizer；
(ii) mixing and ball milling：Raw material is put into mixing and ball milling instrument by mass percentage and carries out mixing and ball milling, original after mixing and ball milling
The partial size of material is between 800-2500 mesh；
(iii) it mixes：It will be heated to 75-95 DEG C in step (ii) the product investment reaction kettle of mixing and ball milling, stirs 25-30min,
900-1200 revs/min of mixing speed；
(iv) it squeezes out：By step, (iii) gained mixture pours into mixing granulator in double-screw extruding pelletizing machine key injection article is made
Material, double screw extruder are divided into three sections, i.e. entrance, interlude and outlet section, temperature is controlled as：90-95 DEG C, 112-
152 DEG C, 89-93 DEG C；
(v) it forms：Injection molding is carried out using double coloured plastic injection machine, the temperature control being molded in injection molding to mould cavity exists
180-210 DEG C, molding cycle controlled the interval time being molded twice at 125-130 seconds not less than 60 seconds；
(vi) corrosion-resistant finishes is coated：The coating processes applied using surface treatment-bottoming-scale glue coating-face, concrete technology
For：
Surface treatment：Keytop polishing is roughened by sandblasting with angle grinder, and removes the dust on basal plane, greasy dirt, water
Point, expose the surface substrate；
Bottoming：Stomata, pitted skin in the construction surface of key is clogged closely knit, then coating BD417 anti-corrosion painting with dope
Layer glue is as primary coat；
The coating of scale glue：BD418 scale anticorrosion coating adhesive is scraped coated on above primary coat to a direction after primary coat is just solid
It applies, next layer can be applied after front layer scale anticorrosion coating adhesive is just solid；
Face applies：Coating BD417 corrosion-inhibiting coating glue is as surface layer after the last layer scale anticorrosion coating adhesive is just solid.
The improvement of above-mentioned technical proposal is：Insulation film and control circuit board sealed set.
The improvement of above-mentioned technical proposal is：Substrate edge offers water guide groove.
The improvement of above-mentioned technical proposal is：Microswitch is five, and there are two parting beads.
The improvement of above-mentioned technical proposal is：It symmetrically makes there are two hook the two sides of key lower end.
The improvement of above-mentioned technical proposal is：The mass percent of each ingredient is in key：Ethylene-vinyl acetate copolymer:
0.79%, nanometer aluminium powder:0.38%, nano zinc powder:0.27%, nano silica:0.59%, fatty alcohol polyoxyethylene ether:
0.17%, acrylic acid:0.18%, propylene glycol methyl ether acetate:0.31%, peroxidized t-butyl perbenzoate:0.58%, tert-butyl
Peroxidating 2- ethylhexyl carbonate:0.49%, 3- aminopropyl triethoxysilane:0.67%, 3,5- di-t-butyl -4- hydroxyl
Benzoic acid cetyl ester:0.13%, butyl rubber:0.69%, diatomite:0.34%, sorbitan fatty acid ester:
0.42%, acrylate:0.85%, styrene：0.34%, peracetic acid butyl ester：0.67%, magnesium stearate：0.26%, yellow
Humic acid iron：0.23%, calcium oxide：0.42%, magnesia：0.36%, glass fibre：0.29%, acetylacetone,2,4-pentanedione：0.32%,
Polyamide：0.53%, epoxy resin：0.18%, vinyltrimethoxysilane：0.34%, hydroxy silicon oil：0.08%,
Bombax cotton：0.36%, polyester fiber：0.69%, polyester fiber：0.33%, polyoxymethylene resin：1.15%, poly- terephthaldehyde
Sour glycol ester：2.36%, polypropylene：1.28%, surplus is poly- carbonic acid resin.
The improvement of above-mentioned technical proposal is：The mass percent of each ingredient is in key：Ethylene-vinyl acetate copolymer:
0.85%, nanometer aluminium powder:0.42%, nano zinc powder:0.31%, nano silica:0.64%, fatty alcohol polyoxyethylene ether:
0.32%, acrylic acid:0.25%, propylene glycol methyl ether acetate:0.43%, peroxidized t-butyl perbenzoate:0.71%, tert-butyl
Peroxidating 2- ethylhexyl carbonate:0.62%, 3- aminopropyl triethoxysilane:0.71%, 3,5- di-t-butyl -4- hydroxyl
Benzoic acid cetyl ester:0.19%, butyl rubber:0.73%, diatomite:0.42%, sorbitan fatty acid ester:
0.52%, acrylate:0.91%, styrene：0.56%, peracetic acid butyl ester：0.81%, magnesium stearate：0.32%, yellow
Humic acid iron：0.27%, calcium oxide：0.52%, magnesia：0.45%, glass fibre：0.57%, acetylacetone,2,4-pentanedione：0.44%,
Polyamide：0.62%, epoxy resin：0.22%, vinyltrimethoxysilane：0.37%, hydroxy silicon oil：0.13%,
Bombax cotton：0.61%, polyester fiber：0.71%, polyester fiber：0.38%, polyoxymethylene resin：1.21%, poly- terephthaldehyde
Sour glycol ester：2.38%, polypropylene：1.37%, surplus is poly- carbonic acid resin.
The improvement of above-mentioned technical proposal is：(iii) heating temperature is 85 DEG C to step in reaction kettle, stirs 27min, mixing speed
1100 revs/min.
The improvement of above-mentioned technical proposal is：Step (iv) in, three sections of temperature is controlled as in double screw extruder：95
DEG C, 135 DEG C, 90 DEG C.
The improvement of above-mentioned technical proposal is：Step (v) in, injection molding when to mould cavity be molded temperature control 190
DEG C, molding cycle was controlled at 130 seconds.
The beneficial effect of the present invention by adopting the above technical scheme is：(1) due to being covered with insulation film in control circuit board,
The waterproof performance of water proof and dust proof vehicle steering wheel switch is effectively increased, while can also prevent dust from entering control circuit board, energy
It effectively prevent intaking at control circuit board or illiteracy dirt leads to switch failure, extend service life；(2) due to being embedded in substrate
Heating sheet can open heating sheet when wet by water at water proof and dust proof vehicle steering wheel switch, to water proof and dust proof automobile steering
Disk switch is heated, so that water rapid evaporation, guarantees the drying at water proof and dust proof vehicle steering wheel switch, prevented water infiltration
Significant points in switch cause switch failure；(3) key of the ingredient has high temperature resistant, corrosion-resistant, light weight and intensity
High advantage joined nanometer aluminium powder and nano zinc powder etc. in the key of water proof and dust proof vehicle steering wheel switch of the invention, have
Effect improves the heat-resisting and corrosion resistance of key, prevents when opening heating sheet, key aoxidized due to the excessively high generation of temperature or
Person is corroded, and extends the service life of water proof and dust proof vehicle steering wheel switch；(4) due to water proof and dust proof automobile side of the invention
It joined nano silica in the key switched to disk, significantly improve the mechanical property of key, extend service life；
(5) raw material of the key of water proof and dust proof vehicle steering wheel of the invention switch passes through crushing, mixing and ball milling, the step of mixing and extrusion
Suddenly, raw material is sufficiently smashed to mixing, obtained key injection material quality is closely uniform so that injection molding after obtain by bond strength
Higher, corrosion-and high-temp-resistant can be more preferable；(6) due to carrying out injection molding using double coloured plastic injection machine, molded product remnants is reduced and are answered
Power, the surface nature for increasing mechanical strength and product are not necessarily to subsequent spraying laser carving；(7) since keytop coating is corrosion-resistant
Coating further improves corrosion resistance, extends service life；It (8), can be with since substrate edge offers water guide groove
The water at water proof and dust proof vehicle steering wheel switch is discharged rapidly, and due to insulation film and control circuit board sealed set,
Effectivelying prevent water to penetrate at control circuit board leads to switching damage；(9) it due to being additionally provided with parting bead between key, can effectively prevent
Dust and water enter control circuit board from side, and preventing from dirt is intake or covered at control circuit board leads to switch failure, and extending makes
Use the service life；(10) it can prevent key from falling off by the cooperation of hook and limit card board, thus circuit caused by preventing key from falling off
It is intake at plate into ash.
Detailed description of the invention
The present invention will be further explained below with reference to the attached drawings：
Fig. 1 is the configuration schematic diagram of water proof and dust proof vehicle steering wheel of embodiment of the present invention switch；
Fig. 2 is the structural schematic diagram of the substrate of water proof and dust proof vehicle steering wheel of embodiment of the present invention switch；
Fig. 3 is the partial enlarged view at the key of water proof and dust proof vehicle steering wheel of embodiment of the present invention switch；
Wherein：1- key；1a- hook；2- insulation film；3- control circuit board；4- substrate；5- water guide groove；6- heating
Piece；7- parting bead；8- compressed spring；9- microswitch；10- limit card board.
Specific embodiment
Embodiment one
The water proof and dust proof vehicle steering wheel of the present embodiment switchs, as illustrated in fig. 1 and 2, including substrate 4, insulation film 2 and five
A key 1 is embedded with heating sheet 6 in substrate 4, and 4 upper surface of substrate is equipped with control circuit board 3, and control circuit board 3 is connected with five
A microswitch 9, insulation film 2 are covered in control circuit board 3, and it is close that five keys 1 are separately mounted to 2 top of insulation film
At five microswitches 9,1 lower end of key is close with 9 upper end of microswitch, is also set up between key 1 there are two parting bead 7, is pressed
Be provided with compressed spring 8 between key 1 and substrate 4, the two sides of 1 lower end of key are symmetrically made there are two hook 1a, be formed on substrate 4 with
The limit card board 10 that hook 1a matches, 10 upper end of limit card board are provided with limit hook；Insulation film 2 and control circuit board 3
Sealed set；4 edge uniform intervals of substrate offer water guide groove 5；
The mass percent of each ingredient is in key：Ethylene-vinyl acetate copolymer:0.79%, nanometer aluminium powder:
0.38%, nano zinc powder:0.27%, nano silica:0.59%, fatty alcohol polyoxyethylene ether:0.17%, acrylic acid:
0.18%, propylene glycol methyl ether acetate:0.31%, peroxidized t-butyl perbenzoate:0.58%, tert-butyl hydroperoxide 2- ethyl hexyl
Base carbonic ester: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%, styrene：0.34%, peracetic acid butyl ester：0.67%, magnesium stearate：0.26%, fulvic acid iron：0.23%,
Calcium oxide：0.42%, magnesia：0.36%, glass fibre：0.29%, acetylacetone,2,4-pentanedione：0.32%, polyamide：
0.53%, epoxy resin：0.18%, vinyltrimethoxysilane：0.34%, hydroxy silicon oil：0.08%, bombax cotton：
0.36%, polyester fiber：0.69%, polyester fiber：0.33%, polyoxymethylene resin：1.15%, polyethylene terephthalate
Ester：2.36%, polypropylene：1.28%, surplus is poly- carbonic acid resin；
The processing technology of key includes the following steps：
(i) it crushes：The raw material of above-mentioned key is tentatively crushed respectively using pulverizer；
(ii) mixing and ball milling：Raw material is put into mixing and ball milling instrument by mass percentage and carries out mixing and ball milling, original after mixing and ball milling
The partial size of material is between 800-2500 mesh；
(iii) it mixes：It will be heated to 75-95 DEG C in step (ii) the product investment reaction kettle of mixing and ball milling, stirs 25-30min,
900-1200 revs/min of mixing speed；
(iv) it squeezes out：By step, (iii) gained mixture pours into mixing granulator in double-screw extruding pelletizing machine key injection article is made
Material, double screw extruder are divided into three sections, i.e. entrance, interlude and outlet section, temperature is controlled as：90-95 DEG C, 112-
152 DEG C, 89-93 DEG C；
(v) it forms：Injection molding is carried out using double coloured plastic injection machine, the temperature control being molded in injection molding to mould cavity exists
180-210 DEG C, molding cycle controlled the interval time being molded twice at 125-130 seconds not less than 60 seconds；
(vi) corrosion-resistant finishes is coated：The coating processes applied using surface treatment-bottoming-scale glue coating-face, concrete technology
For：
Surface treatment：Keytop polishing is roughened by sandblasting with angle grinder, and removes the dust on basal plane, greasy dirt, water
Point, expose the surface substrate；
Bottoming：Stomata, pitted skin in the construction surface of key is clogged closely knit, then coating BD417 anti-corrosion painting with dope
Layer glue is as primary coat；
The coating of scale glue：BD418 scale anticorrosion coating adhesive is scraped coated on above primary coat to a direction after primary coat is just solid
It applies, next layer can be applied after front layer scale anticorrosion coating adhesive is just solid；
Face applies：Coating BD417 corrosion-inhibiting coating glue is as surface layer after the last layer scale anticorrosion coating adhesive is just solid.
The water proof and dust proof vehicle steering wheel switch of the present embodiment is when in use, thin due to being covered with insulation in control circuit board
Film effectively increases the waterproof performance of water proof and dust proof vehicle steering wheel switch, and can effectively prevent water inlet at control circuit board causes
Switch failure extends service life；Due to being embedded with heating sheet in substrate, by water at water proof and dust proof vehicle steering wheel switch
When drenching, heating sheet can be opened, water proof and dust proof vehicle steering wheel switch is heated, so that water rapid evaporation, guarantees anti-
Drying at water dustproof automotive steering wheel switch, the significant points for preventing water from penetrating into switch cause switch failure；Due to base
Edges of boards can be such that the water at water proof and dust proof vehicle steering wheel switch is discharged rapidly along water guide groove is offered, and due to insulation
Film and control circuit board sealed set, effectivelying prevent water to penetrate at control circuit board leads to switching damage；Due between key
It is additionally provided with parting bead, dust and water is can effectively prevent from side and enters control circuit board, prevents from intaking or covering at control circuit board
Dirt leads to switch failure, extends service life；It can prevent key from falling off by the cooperation of hook and limit card board, to prevent
It is intake at circuit board caused by key falls off into ash.
Embodiment two
The water proof and dust proof vehicle steering wheel switch of the present embodiment is basically the same as the first embodiment, the difference is that in key
The mass percent of each ingredient is：Ethylene-vinyl acetate copolymer:0.85%, nanometer aluminium powder:0.42%, nano zinc powder:
0.31%, nano silica:0.64%, fatty alcohol polyoxyethylene ether:0.32%, acrylic acid:0.25%, propylene glycol monomethyl ether vinegar
Acid esters: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%, styrene：0.56%,
Peracetic acid butyl ester：0.81%, magnesium stearate：0.32%, fulvic acid iron：0.27%, calcium oxide：0.52%, magnesia：
0.45%, glass fibre：0.57%, acetylacetone,2,4-pentanedione：0.44%, polyamide：0.62%, epoxy resin：0.22%, ethylene
Base trimethoxy silane：0.37%, hydroxy silicon oil：0.13%, bombax cotton：0.61%, polyester fiber：0.71%, terylene is fine
Dimension：0.38%, polyoxymethylene resin：1.21%, polyethylene terephthalate：2.38%, polypropylene：1.37%, surplus is
Poly- carbonic acid resin.
The present invention is not limited to the above embodiment.All technical solutions formed using equivalent replacement, are all fallen within the present invention and wanted
The protection scope asked.
Claims (10)
1. a kind of water proof and dust proof vehicle steering wheel switch, it is characterised in that：Including substrate, insulation film and key, the substrate
It is inside embedded with heating sheet, the upper surface of base plate is equipped with control circuit board, and it is micro- that the control circuit board is connected at least one
Dynamic switch, the insulation film are covered in the control circuit board, and the key is mounted on close above the insulation film
At the microswitch, the key lower end is close with the microswitch upper end, is additionally provided with parting bead between the key,
Compressed spring is provided between the key and the substrate, the key lower end is formed with hook, is formed on the substrate and institute
The limit card board that hook matches is stated, limit card board upper end is provided with limit hook；
The mass percent of each ingredient is in the key：Ethylene-vinyl acetate copolymer:0.75-0.86%, nanometer aluminium powder:
0.36-0.43%, nano zinc powder:0.25-0.31%, nano silica:0.58-0.66%, fatty alcohol polyoxyethylene ether:0.16-
0.33%, acrylic acid:0.17-0.26%, propylene glycol methyl ether 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%, styrene：0.34-0.57%, mistake
Acetic oxide butyl ester：0.65-0.82%, magnesium stearate：0.25-33%, fulvic acid iron：0.22-0.33%, calcium oxide：
0.42-0.53%, magnesia：0.35-0.47%, glass fibre：0.26-0.57%, acetylacetone,2,4-pentanedione：0.28-0.47%, polyamides
Polyimide resin：0.48-0.67%, epoxy resin：0.18-0.23%, vinyltrimethoxysilane：0.33-0.39%, hydroxyl silicon
Oil：0.08-0.13%, bombax cotton：0.35-0.64%, polyester fiber：0.67-0.72%, polyester fiber：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 resin；
The processing technology of the key includes the following steps：
(i) it crushes：The raw material of above-mentioned key is tentatively crushed respectively using pulverizer；
(ii) mixing and ball milling：Raw material is put into mixing and ball milling instrument by the mass percent and carries out mixing and ball milling, original after mixing and ball milling
The partial size of material is between 800-2500 mesh；
(iii) it mixes：It will be heated to 75-95 DEG C in step (ii) the product investment reaction kettle of mixing and ball milling, stirs 25-30min, stirring
900-1200 revs/min of speed；
(iv) it squeezes out：By step, (iii) gained mixture pours into mixing granulator in double-screw extruding pelletizing machine key injection material is made,
Double screw extruder is divided into three sections, i.e. entrance, interlude and outlet section, temperature is controlled as：90-95 DEG C, 112-
152 DEG C, 89-93 DEG C；
(v) it forms：Injection molding is carried out using double coloured plastic injection machine, the temperature being molded in injection molding to mould cavity is controlled in 180-
210 DEG C, molding cycle controlled the interval time being molded twice at 125-130 seconds not less than 60 seconds；
(vi) corrosion-resistant finishes is coated：The coating processes applied using surface treatment-bottoming-scale glue coating-face, concrete technology are：
Surface treatment：Keytop polishing is roughened by sandblasting with angle grinder, and removes the dust on basal plane, greasy dirt, moisture, is made
Expose substrate in surface；
Bottoming：Stomata, pitted skin in the construction surface of key is closely knit with dope filling, then apply BD417 corrosion-inhibiting coating glue
As primary coat；
The coating of scale glue：BD418 scale anticorrosion coating adhesive is scratched coated on above primary coat to a direction after primary coat is just solid,
Next layer can be applied after front layer scale anticorrosion coating adhesive is just solid；
Face applies：Coating BD417 corrosion-inhibiting coating glue is as surface layer after the last layer scale anticorrosion coating adhesive is just solid.
2. water proof and dust proof vehicle steering wheel switch according to claim 1, it is characterised in that：The insulation film with it is described
Control circuit board sealed set.
3. water proof and dust proof vehicle steering wheel switch according to claim 2, it is characterised in that：The substrate edge offers
Water guide groove.
4. water proof and dust proof vehicle steering wheel switch according to claim 3, it is characterised in that：The microswitch is five
A, there are two the parting beads.
5. water proof and dust proof vehicle steering wheel switch according to claim 4, it is characterised in that：The two sides of the key lower end
There are two hooks for symmetrical system.
6. water proof and dust proof vehicle steering wheel switch according to claim 5, it is characterised in that：Each ingredient in the key
Mass percent is：Ethylene-vinyl acetate copolymer:0.79%, nanometer aluminium powder:0.38%, nano zinc powder:0.27%, nano-silica
SiClx:0.59%, fatty alcohol polyoxyethylene ether:0.17%, acrylic acid:0.18%, propylene glycol methyl ether acetate:0.31%, peroxidating
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%, it loses
Water Span:0.42%, acrylate:0.85%, styrene：0.34%, peracetic acid butyl ester：0.67%, hard
Fatty acid magnesium：0.26%, fulvic acid iron：0.23%, calcium oxide：0.42%, magnesia：0.36%, glass fibre：0.29%,
Acetylacetone,2,4-pentanedione：0.32%, polyamide：0.53%, epoxy resin：0.18%, vinyltrimethoxysilane：0.34%,
Hydroxy silicon oil：0.08%, bombax cotton：0.36%, polyester fiber：0.69%, polyester fiber：0.33%, polyoxymethylene resin：
1.15%, polyethylene terephthalate：2.36%, polypropylene：1.28%, surplus is poly- carbonic acid resin.
7. water proof and dust proof vehicle steering wheel switch according to claim 5, it is characterised in that：Each ingredient in the key
Mass percent is：Ethylene-vinyl acetate copolymer:0.85%, nanometer aluminium powder:0.42%, nano zinc powder:0.31%, nano-silica
SiClx:0.64%, fatty alcohol polyoxyethylene ether:0.32%, acrylic acid:0.25%, propylene glycol methyl ether acetate:0.43%, peroxidating
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%, it loses
Water Span:0.52%, acrylate:0.91%, styrene：0.56%, peracetic acid butyl ester：0.81%, hard
Fatty acid magnesium：0.32%, fulvic acid iron：0.27%, calcium oxide：0.52%, magnesia：0.45%, glass fibre：0.57%,
Acetylacetone,2,4-pentanedione：0.44%, polyamide：0.62%, epoxy resin：0.22%, vinyltrimethoxysilane：0.37%,
Hydroxy silicon oil：0.13%, bombax cotton：0.61%, polyester fiber：0.71%, polyester fiber：0.38%, polyoxymethylene resin：
1.21%, polyethylene terephthalate：2.38%, polypropylene：1.37%, surplus is poly- carbonic acid resin.
8. water proof and dust proof vehicle steering wheel switch according to claim 1, it is characterised in that：The step is (iii) in reaction kettle
Heating temperature be 85 DEG C, stir 27min, 1100 revs/min of mixing speed.
9. water proof and dust proof vehicle steering wheel switch according to claim 1, it is characterised in that：The step (iv) in, double spiral shells
Three sections of temperature is controlled as in bar extruder：95 DEG C, 135 DEG C, 90 DEG C.
10. water proof and dust proof vehicle steering wheel switch according to claim 1, it is characterised in that：The step (v) in, infusing
At 190 DEG C, molding cycle was controlled at 130 seconds for the temperature control being molded when modeling to mould cavity.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610021132.1A CN105679582B (en) | 2016-01-13 | 2016-01-13 | A kind of water proof and dust proof vehicle steering wheel switch |
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|---|---|---|---|
| CN201610021132.1A CN105679582B (en) | 2016-01-13 | 2016-01-13 | A kind of water proof and dust proof vehicle steering wheel switch |
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| CN105679582A CN105679582A (en) | 2016-06-15 |
| CN105679582B true CN105679582B (en) | 2018-11-27 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| 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 |
| CN108793764B (en) * | 2018-07-02 | 2021-12-24 | 黄长青 | Surface treatment method for glass product and glass product |
| CN112951637A (en) * | 2021-02-05 | 2021-06-11 | 方玄 | Integrated form light weight type motion control case |
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| 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 |
| WO2012055757A1 (en) * | 2010-10-25 | 2012-05-03 | Bayer Materialscience Ag | Multilayer plastic structure having low energy transmission |
| CN202008943U (en) * | 2010-11-02 | 2011-10-12 | 无锡大星电子有限公司 | Rearview mirror switching device |
| CN104795265B (en) * | 2015-03-31 | 2017-07-18 | 乐星汽车电子（无锡）有限公司 | A kind of automobile fills switch and its production technology soon |
| 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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Address after: 214101 Xishan economic and Technological Development Zone, Jiangsu, unity Road, No. 36, No. Applicant after: Joy Star Automotive Electronics (Wuxi) Co., Ltd. Address before: 214101 Xishan economic and Technological Development Zone, Jiangsu, unity Road, No. 36, No. Applicant before: Wuxi Daxing Electronics Co.,Ltd. |
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Effective date of registration: 20180207 Address after: 214101 Xishan economic and Technological Development Zone, Jiangsu, unity Road, No. 36, No. Applicant after: Le Star Automotive Technology (Wuxi) Co., Ltd. Address before: 214101 Xishan economic and Technological Development Zone, Jiangsu, unity Road, No. 36, No. Applicant before: Joy Star Automotive Electronics (Wuxi) Co., Ltd. |
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