CN104174896B - A kind of convenient electric drill - Google Patents
A kind of convenient electric drill Download PDFInfo
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- CN104174896B CN104174896B CN201410331823.2A CN201410331823A CN104174896B CN 104174896 B CN104174896 B CN 104174896B CN 201410331823 A CN201410331823 A CN 201410331823A CN 104174896 B CN104174896 B CN 104174896B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
- B23B45/02—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor driven by electric power
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/02—Construction of casings, bodies or handles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
Abstract
The invention belongs to electric tool technical field, relate to a kind of convenient electric drill.This convenient electric drill includes being fastened, by left casing and right casing, the casing formed, casing is made up of composite plastic, casing bottom is provided with battery bag assembly, be provided with in the middle part of casing have just switch, the switch assembly of auxiliary switch, speed reduction gearing and motor are installed in casing upper end, front end, casing upper end is sequentially installed with moment set inner ring, moment set back cover, moment set fore shell, impact sleeve, drill chuck, is provided with assist handle outward in the middle part of casing；Composite plastic is become to be grouped into by following parts by weight: PC:60 80 parts, PBT:10 20 parts, ABS:10 20 parts, reinforcing fiber: 5 20 parts, compatilizer: 2 10 parts, organic modification montmonrillonite: 15 parts, plasticizer: 2 10 parts, fire retardant: 5 15 parts, antioxidant: 0.5 2.5 parts.Electric drill machine shell performance of the present invention is high, and overall construction design is reasonable.
Description
Technical field
The invention belongs to electric tool technical field, relate to a kind of convenient electric drill.
Background technology
Electric drill is the drilling machine utilizing electricity to do power, is the conventional products in electric tool,
Also it is the electric tool series products of market demand amount maximum.Electric drill can be applicable to building,
The use occasions such as finishing, domestic, medical treatment, can be used for scraping material surface or pierce object.
The operation principle of electric drill is electromagnetic rotating formula or electromagnetic reciprocating low capacity motor
Rotor does magnetic field intercepts acting operating, drives apparatus for work, band by drive mechanism
Moving gear strengthens the power of drill bit so that drill bit preferably pierces object.Using electric drill
During people generally require and use to both hands simultaneously, but in prior art, great majority
Electric drill design is unreasonable, and hand-held inconvenience so that people use cumbersome is taken
Time laborious.
In sum, for solving the deficiency in existing electric drill structure, need to design one and set
Count convenient electric drill reasonable and easy to use.
Summary of the invention
It is an object of the invention to there are the problems referred to above for existing technology, it is proposed that a kind of
Convenient electric drill reasonable in design and easy to use.
The purpose of the present invention can be realized by following technical proposal: a kind of convenient electric drill,
Fastening, including by left casing and right casing, the casing formed, described casing is by composite plastic system
Become, battery bag assembly be installed in casing bottom and battery bag assembly is built-in with power supply,
Be provided with in the middle part of casing have just switch, the switch assembly of auxiliary switch, described just switch,
Auxiliary switch is located in the both sides in the middle part of casing the most respectively, in casing upper end
Being provided with speed reduction gearing and have the motor of motor output shaft, described motor exports
The tip of the axis is installed with a gear, the electrical connection of described motor, switch assembly, power supply and shape
Become closed-loop path, be sequentially installed with moment set inner ring, moment set in front end, casing upper end
Back cover, moment set fore shell, impact sleeve, drill chuck, described speed reduction gearing includes passing
Moving axis, change speed gear box fore shell, change speed gear box back cover, stir gear ring, ring gear, described speed change
Case fore shell is arranged on casing with change speed gear box back cover connected composition gearbox body and gearbox body
In, described gearbox body is arranged between moment set inner ring and motor, described gearbox body
Inside it is provided with the first speed change assembly, the second speed change assembly, the 3rd speed change assembly, described first
Speed change assembly include primary planet carrier and three be the most uniformly plugged in primary planet carrier
On primary planet pinion, described second speed change assembly includes secondary planet frame and three
The most uniformly be plugged in the secondary planetary gear on secondary planet frame, described in stir gear ring
Engage with the outer peripheral face of three primary planet pinions, three secondary planetary gears simultaneously and be connected,
The inner peripheral surface engagement of described head gear and three primary planet pinions connects, and the described 3rd becomes
Speed assembly include third-level planetary frame and three be the most uniformly plugged on third-level planetary frame
Three-stage planetary gear, described ring gear simultaneously with the outer peripheral face of three three-stage planetary gear
Engagement connects, and is installed with connection gear and connects gear and three in the middle part of described secondary planet frame
The inner peripheral surface engagement of individual three-stage planetary gear connects, and described power transmission shaft is located in casing,
Described power transmission shaft one end is stretched out outside drill chuck and has drill bit installing hole, and the other end is through becoming
Speed casing is also connected with third-level planetary frame, described power transmission shaft, primary planet carrier, two grades of row
Carrier, third-level planetary frame, motor output shaft are coaxially disposed, described left casing, right casing
Lateral surface on all offer some ventilation slots being obliquely installed, outer the most removable in the middle part of casing
Be provided with assist handle with unloading, described assist handle is by the hand grip portion being connected as a single entity and clamping
Portion is constituted, and the outer surface of described assist handle is uniformly coated with fluorescence coating, described clamping
Portion is set in the middle part of casing, is provided with and can regulate clamping section clamping journey in the middle part of described assist handle
The regulating part of degree, described drill chuck is arranged with dust cover.
In above-mentioned convenient electric drill, as preferably, described composite plastic is by following weight portion
Count into and be grouped into: PC:60-80 part, PBT:10-20 part, ABS:10-20 part,
Reinforcing fiber: 5-20 part, compatilizer: 2-10 part, organic modification montmonrillonite: 1-5 part,
Plasticizer: 2-10 part, fire retardant: 5-15 part, antioxidant: 0.5-2.5 part.
Fastened, by left casing and right casing, the part that the casing formed is electric drill machine shell, rise
The effect of skeleton, in practice it has proved that, electric drill machine shell uses the composite plastic of high-quality to make tool
There is higher practicality.But, current electric drill machine shell mostly use PC+PBT material or
ABS material is made, and it is high that the performance such as intensity, high temperature resistant, wearability all cannot meet electric drill
The job requirements of intensity.In plastics, Merlon (PC) had both had similar non-ferrous metal
Intensity, has both again ductility and obdurability simultaneously, and its impact strength is high, uses ferrum
Hammer percussion can not be destroyed, and is able to take electric drill and works long hours the vibrations and friction brought
And spark.And PBT is non-reinforcing type thermoplastic polyester, its processing characteristics and electrical property are all
Preferably, and there is high-insulativity and temperature tolerance, with PC compound use, it is possible to increase electric drill
The intensity of casing and temperature tolerance.And as the ABS of one of five big synthetic resin, its density
Only 1.02-1.05g/cm3, nonpoisonous and tasteless, the product size of molding is stable and has preferably
Gloss, and it is steady to have fabulous impact strength, mechanical strength, wearability, chemistry
The performance such as qualitative, is the preferred material of electric drill machine shell of the present invention.But, the price of ABS
Higher than common plastics, it is relatively costly that simple employing ABS material prepares electric drill machine shell, and
And, ABS elongation at break is less, and melt viscosity is to temperature, the dependency of shear rate
The highest, fluidity of molten is poor, and processing characteristics is general.The present invention is in order to prepare thermal diffusivity
Good, the convenient electric drill that service life is more permanent, select to add on the basis of PC+PBT
Convenient electricity made by the rational composite plastics of compatibility such as ABS, reinforcing fibre, nano imvite
The casing bored, to improve the rigidity of electric drill machine shell, impact strength, high temperature resistant and size
The performances such as stability, so that the electric drill thermal diffusivity prepared is good, mechanical performance is high, with full
Foot electric drill high intensity, more permanent job requirements, and extend the service life of electric drill.
In above-mentioned convenient electric drill, as preferably, described reinforcing fiber is carbon fiber, glass
One or more in glass fiber, ultrafine titanium oxide fiber, the diameter of described reinforcing fiber
For 0.1-0.5 μm, draw ratio is (8-15): 1.Composite plastic of the present invention adds and increases
Strong fiber, can make composite plastic have the creep resistant of excellence, wet-heat resisting, ageing-resistant and anti-
Impact property, also can increase substantially stretching and the bending strength of composite, Jin Erti
The combination property of high electric drill machine shell.
In above-mentioned convenient electric drill, as preferably, described compatilizer be polyphenylene oxide resin,
One or more mixing in ABS-g-MAH, SMA compatilizer, described compatilizer
Percent grafting is 0.3-3%.Owing to the solubility parameter of PC is 20.3 (J/cm3)1/2, ABS
Being polarity, the polymer of random form, solubility parameter is 40.2～41.9 (J/cm3)1/2,
Two kinds of solubility parameter differ greatly, the most immiscible, there is the biggest phase boundary
Surface tension, so needing to add compatilizer to improve Miscibility, divides improving blend
Dissipate property, improve processability and the mechanical property of co-mixing system.The SMA that the present invention selects
Compatilizer and PC, PBT, ABS have a good compatible role, ABS-g-MAH with
ABS has good compatible role, polyphenylene oxide resin and PC and ABS to have good phase
Appearance effect.But, the content of compatilizer can not increase simply, show after deliberation,
In this composite plastic after the content of compatilizer is more than 10 parts, owing to compatilizer divides relatively
Protonatomic mass is less, and too much compatilizer produces deterioration to mechanical property in co-mixing system and makees
With, performance improves and tends to slow, and impact strength has declined.
In above-mentioned convenient electric drill, as preferably, the particle diameter of described organic modification montmonrillonite
For 2-8 μm.Organic modification montmonrillonite, under the promotion of compatilizer, is dispersed in continuously
In phase ABS and dispersion phase PC, PBT, improve degree of crystallinity and the crystallization speed of composite plastic
Rate, and improve its impact strength and multinomial system stretch modulus, increase its elongation at break.
Owing to physical entanglement effect forms boundary layer, along with increasing of organic modification montmonrillonite, multiple
The multinomial system of condensation material is strengthened, and makes composite have preferable comprehensive mechanical property.
When in composite plastic, organic modification montmonrillonite is 1-5 part, the extension at break of composite plastic
Rate is about 8 times of identical unmodified montmorillonite composite material.
In above-mentioned convenient electric drill, as preferably, described fire retardant be triphenyl phosphate,
One in 2,4,5-trichlorine sodium sulfonate (STB), perfluorobutyl potassium sulfonate (PDFBS)
Or it is multiple.Further preferably, described fire retardant is triphenyl phosphate.On the one hand, organic
Modified montmorillonoid can also play flame retardant synergism with fire retardant triphenyl phosphate, there was added
The composite plastic of machine modified montmorillonoid and triphenyl phosphate shows well in pyrolytic process
Heat stability, the residual carbon content when 500 DEG C is increased to 11% by 6%.With the addition of
The flame-retarding composite plastic performance of organic modification montmonrillonite and triphenyl phosphate is significantly improved.
Cone calorimetry test display, adds in the used composite plastic of electric drill machine shell of the present invention simultaneously
When adding the triphenyl phosphate of the organic modification montmonrillonite of 1-5 part and 1-15 part, heat release speed
Rate peak value purer ABS or pure PC reduces 50-60%, the total heat release of pure ABS
Than the ABS composite wood after interpolation organic modification montmonrillonite and triphenyl phosphate fire retardant
Material exceeds 120MJ m-2, the peak of mass loss rate reduces more than 50%, life
The peak of cigarette speed reduces about 50%, and total raw smoke also has substantially reduction, improves
The fire resistance of composite plastic.
In above-mentioned convenient electric drill, as preferably, described plasticizer is N-butyl benzene sulphonyl
One or more in amine, dioctyl phthalate, dibutyl phthalate.
In above-mentioned convenient electric drill, as preferably, described antioxidant is Hinered phenols antioxygen
Agent and auxiliary antioxidant, wherein said Hinered phenols antioxidant is 2, tri-grades of butyl-4-of 6-
Methylphenol, double (3,5-tri-grades of butyl-4-hydroxy phenyls) thioether, antioxidant 1010
In one or more, described auxiliary antioxidant is DSTP, irgasfos 168, antioxidant
One or more in 1098.Antioxidant DSTP, irgasfos 168, antioxidant 1098
There is the function of peroxynitrite decomposition compound, can be as polyacrylic auxiliary antioxidant, its fusing point
Height, volatility are low, hot-working loss is little, can produce with Hinered phenols antioxidant simultaneously
Well synergism, more efficiently prevents from composite thermal degradation in injection, gives
The long-effective protection that material is extra.
In above-mentioned convenient electric drill, the preparation method of described casing comprises the following steps:
S1, as used by above-mentioned convenient electric drill machine shell the constituent of composite plastic and weight thereof
Number weighs raw material, and PC, ABS, PBT is placed in vacuum drying oven in 90-120 DEG C
Under be dried 2-4h；
S2, by the above-mentioned raw material mix homogeneously weighed the barrel adding injection machine to,
It is heated to molten condition；
S3, the raw material of above-mentioned molten condition is expelled to left casing and the right side respectively through nozzle
In the mould of casing, obtain left casing and right casing, by left casing and the right side through pressurize, cooling
Casing fastens and prepares convenient electric drill machine shell finished product.
As preferably, in the preparation method of said machine casing in step S2 before hopper
Duan Wendu is 260-280 DEG C, and stage casing temperature is 240-270 DEG C, and back segment temperature is
220-250℃.Processing temperature is one of key factor affecting composite plastic crystalline condition,
Thus affect the mechanical property of composite plastic.Therefore, the temperature of barrel in the course of processing
Control particularly important for the mechanical property of composite plastic.If temperature is too low, composite plastic
The melted effect of material is bad, poor fluidity, result the loosest in forming process, and
If temperature is too high, during melt cooling, the generation of nucleus is mainly homogeneous nucleation, crystallization speed
Rate is slow, easily generates big spherocrystal, cause goods fragility to increase, reduce in goods
Mechanical property.Hopper section temperature is controlled the melt flows when above-mentioned scope by the present invention
Property is good, and injection mo(u)lding is effective, and product surface is smooth, the generation of nucleus during melt cooling
Predominantly heterogeneous nucleation, crystalline rate is fast, and crystal is little and uniform, thus is conducive to improving
Its mechanical property.
As preferably, mould temperature described in step S3 in the preparation method of said machine casing
Degree is for 50-80 DEG C, and injection pressure is 80-140MPa, and injection time is 5-15s, pressurize
Pressure is 50-100MPa, and the dwell time is 10-40s, and cool time is 10-20s.Note
Blow pressure, time, dwell pressure, time and cool time are all to affect composite plastic to combine
Closing the key factor of performance, the present invention is by injection pressure, time, dwell pressure, time
Controlling within the above range with cool time, the mechanical property of its goods is good, energy consumption
Little, substandard products are few.
In the above-mentioned convenient electric drill of one, it is additionally provided with in the middle part of casing and just can control motor
The push rod of reversion and the two ends of push rod are each passed through left casing and right casing, described push rod with
Just switch, the line of auxiliary switch is vertically arranged, described push rod, motor, switch assembly,
Power supply electrical connection and formation closed-loop path, be provided with in described switch assembly and can make respectively just to open
Pass, the first back-moving spring of auxiliary switch reset, the second back-moving spring.
In the above-mentioned convenient electric drill of one, described hand grip portion has can place at least one
Be hingedly connected with the headkerchief that can close cavity volume on the cavity volume of drill bit and hand grip portion, described in hold
Some anti-skidding projections it are provided with on the outer surface in portion.
In the above-mentioned convenient electric drill of one, sheath body before front end is also equipped with in the middle part of casing
And just switching and extending through front sheath body, described in stir and on gear ring, be additionally provided with compensation gear ring.
In the above-mentioned convenient electric drill of one, it is provided with between described impact sleeve and drill chuck
Damping cover plate.
In the above-mentioned convenient electric drill of one, described casing is provided with relay indicating light, institute
State relay indicating light, motor, switch assembly, power supply electrical connection and form closed-loop path,
The outer surface of described drill chuck is provided with at least one Warning Mark.
Compared with prior art, overall construction design of the present invention is reasonable, and each parts
Compact in design, electric drill stable working, operator hold the most comfortable；And present invention choosing
Select addition ABS, reinforcing fibre, nano imvite etc. on the basis of being used in PC+PBT to join
The casing of convenient electric drill made by 5 rational composite plastics, with improve electric drill machine shell rigidity,
The performances such as impact strength, high temperature resistant and dimensional stability, so that the electric drill prepared dissipates
Hot good, mechanical performance is high, to meet electric drill high intensity, more permanent job requirements,
And extend the service life of electric drill.
Accompanying drawing explanation
Fig. 1 is the structural representation of a preferred embodiment of the present invention.
Fig. 2 is the structural representation at another visual angle of Fig. 1.
Fig. 3 is the structural representation at another visual angle of Fig. 2.
Fig. 4 is the explosive view of a preferred embodiment of the present invention.
Fig. 5 is the explosive view of assist handle in a preferred embodiment of the present invention.
Fig. 6 is the explosive view of casing in a preferred embodiment of the present invention.
Fig. 7 is the explosive view of a preferred embodiment of the present invention breaker in middle assembly.
Fig. 8 is the explosive view of drill chuck in a preferred embodiment of the present invention.
In figure, 11, left casing；12, right casing；13, ventilation slot；14, front sheath body；
20, battery bag assembly；21, power supply；30, switch assembly；31, just switch；32、
Auxiliary switch；40, speed reduction gearing；41, power transmission shaft；411, drill bit installing hole；42、
Change speed gear box fore shell；43, change speed gear box back cover；44, gear ring is stirred；45, ring gear；46、
First speed change assembly；461, primary planet carrier；462, primary planet pinion；47,
Two speed change assemblies；471, secondary planet frame；472, secondary planetary gear；48, the 3rd
Speed change assembly；481, third-level planetary frame；482, three-stage planetary gear；49, tooth is compensated
Circle；50, motor；61, moment set inner ring；62, moment set back cover；63, moment set
Fore shell；64, impact sleeve；65, drill chuck；651, Warning Mark；66, damping cover plate；
70, assist handle；71, hand grip portion；711, anti-skidding projection；72, clamping section；73、
Regulating part；80, dust cover；90, push rod；100, relay indicating light.
Detailed description of the invention
The following is the specific embodiment of the present invention and combine accompanying drawing, the technical side to the present invention
Case is further described, but the present invention is not limited to these embodiments.
As shown in Figures 1 to 8, this convenient electric drill includes by left casing 11 and right casing
12 fasten the casing formed, and are provided with battery bag assembly 20 and battery in casing bottom
Bag assembly 20 is built-in with power supply 21, be provided with in the middle part of casing have just switch 31, pair is opened
Close the switch assembly 30 of 32, just switch 31, auxiliary switch 32 wears the most respectively
Both sides in the middle part of casing, be provided with in casing upper end speed reduction gearing 40 and
Having the motor 50 of motor output shaft, the end of motor output shaft is installed with a gear, electricity
Machine 50, switch assembly 30, power supply 21 electrically connect and form closed-loop path, in casing
Front end, end is sequentially installed with moment set inner ring 61, moment set back cover 62, moment set fore shell
63, impact sleeve 64, drill chuck 65, speed reduction gearing 40 includes power transmission shaft 41, becomes
Speed case fore shell 42, change speed gear box back cover 43, stir gear ring 44, ring gear 45, change speed gear box
Fore shell 42 composition gearbox body connected with change speed gear box back cover 43 and gearbox body are arranged on machine
In shell, gearbox body is arranged between moment set inner ring 61 and motor 50, gearbox body
Inside it is provided with first speed change assembly the 46, second speed change assembly the 47, the 3rd speed change assembly 48,
First speed change assembly 46 include primary planet carrier 461 and three be the most uniformly plugged in
Primary planet pinion 462 on primary planet carrier 461, the second speed change assembly 47 includes two
Level planet carrier 471 and three two be the most uniformly plugged on secondary planet frame 471
Level planetary gear 472, stir gear ring 44 simultaneously with three primary planet pinions 462, three
The outer peripheral face engagement of individual secondary planetary gear 472 connects, head gear and three primary planet
The inner peripheral surface engagement of gear 462 connects, and the 3rd speed change assembly 48 includes third-level planetary frame
481 and three third-level planetary teeth being the most uniformly plugged on third-level planetary frame 481
Wheel 482, ring gear 45 engages with the outer peripheral face of three three-stage planetary gear 482 even simultaneously
Connect, be installed with connection gear in the middle part of secondary planet frame 471 and connect gear and three three grades
The inner peripheral surface engagement of planetary gear 482 connects, and power transmission shaft 41 is located in casing, transmission
Axle 41 one end is stretched out outside drill chuck 65 and has drill bit installing hole 411, and the other end passes
Gearbox body is also connected with third-level planetary frame 481, power transmission shaft 41, primary planet carrier 461,
Secondary planet frame 471, third-level planetary frame 481, motor output shaft are coaxially disposed, left casing
11, multiple ventilation slot 13 being obliquely installed all is offered on the lateral surface of right casing 12,
Removably being provided with assist handle 70 outside in the middle part of casing, assist handle 70 is by being linked as
Hand grip portion 71 and the clamping section 72 of one are constituted, on the outer surface of assist handle 70 uniformly
Being coated with fluorescence coating, clamping section 72 is set in the middle part of casing, sets in the middle part of assist handle 70
There is the regulating part 73 that can regulate clamping section 72 clamping degree, drill chuck 65 is arranged with anti-
Dust hood 80.
In the present invention, it is internal that power supply 21 is built in battery bag assembly 20, battery bag assembly
20 serve storing and storage line function, it is to avoid outside lines are the most random, it is simple to user is received
Line, offers convenience to remote work.
Before and after switch assembly 30, position is respectively equipped with just switch 31 and the auxiliary switch of series connection
32, its using method is: when user palm pushes down auxiliary switch 32 finger simultaneously
Pushing down and just switch 31, home loop turns on, and this convenient electric drill is started working.Add one
With regard to many one layer of safety devices after individual auxiliary switch 32, need in use to use finger pressure simultaneously
Living just switching 31, palm is pushed down auxiliary switch 32 and just can be worked, reasonable in design and operation letter
Single.This case just can be integrated into and just switchs 31 or auxiliary switch 32 by switch assembly 30
In, it is possible to independent design switch assembly 30 according to actual needs, reasonable in design and practicality
By force.
Overall speed reduction gearing 40 includes three groups of speed change assemblies, and reasonable in design, each is zero years old
Component layouts is tight, and this speed reduction gearing 40 can realize three-step gear shift, and work efficiency is high.
The driving force of motor 50 is sent on power transmission shaft 41 by speed reduction gearing 40, work
During, motor 50 synchronizes to drive power transmission shaft 41 to rotate, and then rotary shaft drives drill bit
Work so that electric drill realizes scraping material surface, pierces the functions such as object.
In an initial condition, the drill bit installing hole 411 of power transmission shaft 41 is used for this convenient electric drill
Drill bit, simple in construction and frock are installed convenient.
In the present invention, generate heat when the Position Design of ventilation slot 13 works generally proximate to electric drill position
Putting, the heat that ventilation slot 13 makes inner body distribute can be diffused into the external world in time, keeps away
Exempt from motor 50 or speed reduction gearing 40 is overheated and burn the generation of phenomenon.
Assist handle 70 is removably installed in the middle part of casing, electric drill works when,
Assist handle 70 can realize the function of operator's two-handed hand-held electric drill work, increases work
Stability so that electric drill stable working, operator hold easily.Regulating part 73 can be adjusted
The clamping degree of joint clamping section 72, to be applicable to the use demand of different crowd.Additionally,
Assist handle 70 also acts the effect of certain Shockproof damping.
Wherein, the outer surface of assist handle 70 is uniformly coated with fluorescence coating, in power-off or
In the case of person is dark it can also be seen that the position at electric drill place, simple in construction and adding
Work is convenient, it is to avoid user is stumbled the events such as electric drill generation scratch.
Dust cover 80 it is arranged with, when dust cover 80 can prevent electric drill from working on drill chuck 65
The chip splash enters into casing internal, and then affects electric drill and normally work, easy for installation
And practical, good dustproof effect.Additionally, dust cover 80 is preferably by flexible material system
Become, the degree of depth of electric drill boring can't be affected while dust-proof.
Preferably, it is additionally provided with in the middle part of casing and can control the push rod 90 of motor 50 rotating
And the two ends of push rod 90 are each passed through left casing 11 and right casing 12, push rod 90 with just
Switch 31, the line of auxiliary switch 32 are vertically arranged, and push rod 90, motor 50, switch are total
One-tenth 30, power supply 21 electrically connect and are formed closed-loop path, be provided with and can divide in switch assembly 30
Do not make just to switch 31, the first back-moving spring that auxiliary switch 32 resets, the second back-moving spring.
Said structure is reasonable in design and each parts compact in design, has heightened the work effect of electric drill
Rate.
Preferably, hand grip portion 71 has cavity volume and the hand grip portion that can place at least one drill bit
The headkerchief that can close cavity volume it is hingedly connected with on 71.After electric drill works long hours, easily
The phenomenons such as drill bit blunt occur, needs more bit change in time, therefore can receive in cavity volume
For the drill bit changed, open headkerchief when needs are changed, save the time, design
Reasonable and easy to use.Additionally, drill bit is also acted as by cavity volume prevents depreciation effect, moreover it is possible to
Prevent drill bit be exposed to outer accidental injury other people.It is noted that can also be loaded it in cavity volume
His small-sized accessory, in order to electric drill job demand, improves space availability ratio.
Additionally, it is further preferred that be provided with multiple anti-skidding on the outer surface of hand grip portion 71
Protruding 711.In the present invention, anti-skidding protruding 711 can be chosen as strip projected parts or point
Shape is protruding, and anti-skidding protruding 711 add intensity and the comfort of assist handle 70,
When the work of this convenient electric drill, assist handle 70 comfortable feel and hold firm, design is closed
Reason, improves work efficiency and the service life of assist handle 70.
Preferably, sheath body 14 and just switching 31 and pass through before front end is also equipped with in the middle part of casing
Front sheath body 14 is crossed in break-through, stirs and is additionally provided with compensation gear ring 49 on gear ring 44.Front sheath body
14 play the effects reinforcing casing, compensate gear ring 49 and can widen and stir gear ring 44 so that
Stir gear ring 44 stable working, improve work efficiency.
It is known that electric drill work can produce vibrations, it is preferable that at impact sleeve 64
And it is provided with damping cover plate 66 between drill chuck 65.Damping cover plate 66 is preferably soft
Material, during use, damping cover plate 66 can absorb the vibrations that electric drill produces, thus decreases shake
The transmission of trend human body, reasonable in design, improve comfort and operating accuracy.
Preferably, casing is provided with relay indicating light 100, relay indicating light 100, motor
50, switch assembly 30, power supply 21 electrically connect and are formed closed-loop path, drill chuck 65
Outer surface is provided with at least one Warning Mark 651.Relay indicating light 100 and indicateing arm
Will 651 all plays indicative function, when electric drill carries out bore operation, can point out operation
The duty of person's electric drill, facilitates operator and carries out operation, improve work efficiency.
Wherein, described casing is prepared by composite, and described composite plastic is by following weight
Number becomes to be grouped into: PC:60-80 part, PBT:10-20 part, ABS:10-20 part,
Reinforcing fiber: 5-20 part, compatilizer: 2-10 part, organic modification montmonrillonite: 1-5 part,
Plasticizer: 2-10 part, fire retardant: 5-15 part, antioxidant: 0.5-2.5 part.
Table 1: embodiment 1-3 is for preparing constituent and the parts by weight thereof of casing
Wherein, a diameter of 0.1-0.5 μm of described reinforcing fiber, draw ratio is (8-15):
1；The percent grafting of described compatilizer is 0.3-3%；The particle diameter of described organic modification montmonrillonite
For 2-8 μm.
Embodiment 1
Constituent and parts by weight thereof by composite plastic described in table 1 embodiment 1 claim
Take raw material, and be dried at 90 DEG C in PC, ABS, PBT are placed in vacuum drying oven
2h；
By in the above-mentioned raw material mix homogeneously weighed the barrel adding injection machine to, it is heated to
Molten condition；Wherein hopper front-end temperature is 260 DEG C, and stage casing temperature is 240 DEG C, after
Duan Wendu is 220 DEG C.
The raw material of above-mentioned molten condition is expelled to left casing and right casing respectively through nozzle
Mould in, wherein mold temperature is 50 DEG C, and injection pressure is 80MPa, and injection time is
5s, dwell pressure is 50MPa, and the dwell time is 10s, and cool time is 10s；Through pressurize,
Obtain left casing and right casing after cooling, left casing and right casing are fastened and prepares convenient electric drill
Casing finished product.
Embodiment 2
Constituent and parts by weight thereof by composite plastic described in table 1 embodiment 2 claim
Take raw material, and be dried at 110 DEG C in PC, ABS, PBT are placed in vacuum drying oven
3h；
By in the above-mentioned raw material mix homogeneously weighed the barrel adding injection machine to, it is heated to
Molten condition；Wherein hopper front-end temperature is 270 DEG C, and stage casing temperature is 255 DEG C, after
Duan Wendu is 235 DEG C.
The raw material of above-mentioned molten condition is expelled to left casing and right casing respectively through nozzle
Mould in, wherein mold temperature is 65 DEG C, and injection pressure is 110MPa, injection time
For 10s, dwell pressure is 80MPa, and the dwell time is 25s, and cool time is 15s；Warp
Obtain left casing and right casing after pressurize, cooling, left casing and right casing are fastened and prepares just
Prompt electric drill machine shell finished product.
Embodiment 3
Constituent and parts by weight thereof by composite plastic described in table 1 embodiment 3 claim
Take raw material, and be dried at 120 DEG C in PC, ABS, PBT are placed in vacuum drying oven
4h；
By in the above-mentioned raw material mix homogeneously weighed the barrel adding injection machine to, it is heated to
Molten condition；Wherein hopper front-end temperature is 280 DEG C, and stage casing temperature is 270 DEG C, after
Duan Wendu is 250 DEG C.
The raw material of above-mentioned molten condition is expelled to left casing and right casing respectively through nozzle
Mould in, wherein mold temperature is 80 DEG C, and injection pressure is 140MPa, injection time
For 15s, dwell pressure is 100MPa, and the dwell time is 40s, and cool time is 20s；Warp
Obtain left casing and right casing after pressurize, cooling, left casing and right casing are fastened and prepares just
Prompt electric drill machine shell finished product.
The casing prepared in embodiment 1-3 is carried out performance test, test result such as table 2
Shown in.
Table 2: the performance test results of the casing that embodiment of the present invention 1-3 prepares
Comparative example is employing PC60, ABS20, SAN20, PBT3 in prior art,
Through double screw extruder that melt temperature is 200-260 DEG C extrusion, pelletize.Concrete ginseng
See Chinese invention patent application file (publication number: CN101508833A).
Knowable to Tables 1 and 2, the casing of the convenient electric drill of the present invention is by PC and PBT
Add the rational composite plastics of compatibility such as ABS, reinforcing fibre, nano imvite to make,
Improve the rigidity of this electric drill machine shell, impact strength, high temperature resistant and dimensional stability etc.
Performance, is applied and makes electric drill thermal diffusivity good in this electric drill, and mechanical performance is high, makes
Use the life-span long.
Specific embodiment described herein is only to present invention spirit theory for example
Bright.Those skilled in the art can be to described specific embodiment
Make various amendment or supplement or use similar mode to substitute, but without departing from
The spirit of the present invention or surmount scope defined in appended claims.
Claims (10)
1. a convenient electric drill, fastens, including by left casing and right casing, the casing formed,
It is characterized in that, described casing is made up of composite plastic, is provided with electricity in casing bottom
Pond bag assembly and battery bag assembly are built-in with power supply, be provided with in the middle part of casing have just switch,
The switch assembly of auxiliary switch, described just switchs, auxiliary switch is located in the most respectively
Both sides in the middle part of casing, are provided with speed reduction gearing in casing upper end and have
The motor of motor output shaft, the end of described motor output shaft is installed with a gear, described
The electrical connection of motor, switch assembly, power supply and formation closed-loop path, before casing upper end
End be sequentially installed with moment set inner ring, moment set back cover, moment set fore shell, impact sleeve,
Drill chuck, after described speed reduction gearing includes power transmission shaft, change speed gear box fore shell, change speed gear box
Shell, stirring gear ring, ring gear, described change speed gear box fore shell is connected with change speed gear box back cover and constitutes
Gearbox body and gearbox body are arranged in casing, and described gearbox body is arranged on moment set
Between inner ring and motor, in described gearbox body, it is provided with the first speed change assembly, the second speed change
Assembly, the 3rd speed change assembly, described first speed change assembly includes primary planet carrier and three
The individual primary planet pinion being the most uniformly plugged on primary planet carrier, described second becomes
Speed assembly include secondary planet frame and three be the most uniformly plugged on secondary planet frame
Secondary planetary gear, described in stir gear ring simultaneously with three primary planet pinions, three
The outer peripheral face engagement of secondary planetary gear connects, described head gear and three primary planet teeth
The inner peripheral surface engagement of wheel connects, and described 3rd speed change assembly includes third-level planetary frame and three
The individual three-stage planetary gear being the most uniformly plugged on third-level planetary frame, described ring gear
Engage with the outer peripheral face of three three-stage planetary gear simultaneously and be connected, in described secondary planet frame
Portion is installed with and connects gear and connect the inner peripheral surface engagement of gear and three three-stage planetary gear
Connecting, described power transmission shaft is located in casing, and described power transmission shaft one end is stretched out outside drill chuck
And there is drill bit installing hole, the other end is connected through gearbox body and with third-level planetary frame,
Described power transmission shaft, primary planet carrier, secondary planet frame, third-level planetary frame, motor export
Axle is coaxially disposed, described left casing, right casing lateral surface on all offer some inclinations
The ventilation slot arranged, is removably provided with assist handle outward in the middle part of casing, described auxiliary
Assistant's handle is made up of the hand grip portion being connected as a single entity and clamping section, the appearance of described assist handle
Uniformly being coated with fluorescence coating on face, described clamping section is set in the middle part of casing, described auxiliary
Middle handle is provided with the regulating part that can regulate clamping section clamping degree, and described drill chuck overlaps
It is provided with dust cover.
The convenient electric drill of one the most according to claim 1, it is characterised in that described
The composite plastic of casing is become to be grouped into by following parts by weight: PC:60-80 part, PBT:
10-20 part, ABS:10-20 part, reinforcing fiber: 5-20 part, compatilizer: 2-10 part,
Organic modification montmonrillonite: 1-5 part, plasticizer: 2-10 part, fire retardant: 5-15 part,
Antioxidant: 0.5-2.5 part.
The convenient electric drill of one the most according to claim 2, it is characterised in that described
Reinforcing fiber is one or more in carbon fiber, glass fibre, ultrafine titanium oxide fiber,
A diameter of 0.1-0.5 μm of described reinforcing fiber, draw ratio is (8-15): 1.
The convenient electric drill of one the most according to claim 2, it is characterised in that described
The preparation method of casing comprises the following steps:
S1, as described in claim 2 composition of composite plastic used by convenient electric drill machine shell
Composition and parts by weight thereof weigh raw material, and PC, ABS, PBT are placed in vacuum drying
At 90-120 DEG C, 2-4h it is dried in case；
S2, by the above-mentioned raw material mix homogeneously weighed the barrel adding injection machine to, add
Heat is to molten condition；
S3, the raw material of above-mentioned molten condition is expelled to left casing and right machine respectively through nozzle
In the mould of shell, obtain left casing and right casing, by left casing and right machine through pressurize, cooling
Shell fastens and prepares convenient electric drill machine shell finished product.
The convenient electric drill of one the most according to claim 4, it is characterised in that upper
State in the preparation method of casing hopper front-end temperature in step S2 and be 260-280 DEG C,
Stage casing temperature is 240-270 DEG C, and back segment temperature is 220-250 DEG C；Described in step S3
Mold temperature is 50-80 DEG C, and injection pressure is 80-140MPa, and injection time is 5-15s,
Dwell pressure is 50-100MPa, and the dwell time is 10-40s, and cool time is 10-20s.
The convenient electric drill of one the most according to claim 1, it is characterised in that at machine
The two ends being additionally provided with the push rod and push rod that can control motor positive and inverse in the middle part of shell are each passed through a left side
Casing and right casing, described push rod with just switch, the line of auxiliary switch is vertically arranged, institute
State push rod, motor, switch assembly, power supply electrical connection and formed closed-loop path, described in open
Close in assembly be provided with can make respectively just to switch, auxiliary switch resets the first back-moving spring, the
Two back-moving springs.
The convenient electric drill of one the most according to claim 6, it is characterised in that described
Hand grip portion has to place and is hingedly connected with energy on the cavity volume of at least one drill bit and hand grip portion
Close the headkerchief of cavity volume, the outer surface of described hand grip portion is provided with some anti-skidding projections.
The convenient electric drill of one the most according to claim 7, it is characterised in that at machine
In the middle part of shell, front end is also equipped with front sheath body and is just switching and extend through front sheath body, described in stir
Compensation gear ring it is additionally provided with on gear ring.
The convenient electric drill of one the most according to claim 8, it is characterised in that described
Damping cover plate it is provided with between impact sleeve and drill chuck.
The convenient electric drill of one the most according to claim 9, it is characterised in that institute
State casing and be provided with relay indicating light, described relay indicating light, motor, switch assembly,
Power supply electrical connection and formation closed-loop path, the outer surface of described drill chuck is provided with at least one
Individual Warning Mark.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410331823.2A CN104174896B (en) | 2014-07-11 | 2014-07-11 | A kind of convenient electric drill |
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| CN201410331823.2A CN104174896B (en) | 2014-07-11 | 2014-07-11 | A kind of convenient electric drill |
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| CN104174896B true CN104174896B (en) | 2017-01-04 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105196259B (en) * | 2015-10-22 | 2017-08-11 | 苏州金莱克精密机械有限公司 | A kind of retaining mechanism of the power tool battery bag of one-handed performance |
| CN106001711A (en) * | 2016-06-29 | 2016-10-12 | 苏州博来喜电器有限公司 | Lithium electric gun |
| US11084006B2 (en) | 2017-03-23 | 2021-08-10 | Milwaukee Electric Tool Corporation | Mud mixer |
| CN110238799A (en) * | 2018-03-07 | 2019-09-17 | 苏州宝时得电动工具有限公司 | Electric hammer |
| CN110052642A (en) * | 2019-05-24 | 2019-07-26 | 任航萱 | Grooved bit and drilling device with the grooved bit |
| US11590593B2 (en) * | 2019-11-28 | 2023-02-28 | Makita Corporation | Power tool |
| EP4313494A1 (en) | 2021-03-25 | 2024-02-07 | Milwaukee Electric Tool Corporation | Side handle for power tool |
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| DE20221651U1 (en) * | 2001-01-23 | 2006-10-05 | Black & Decker Inc., Newark | Drive train for power tool e.g. rotary drill, power screwdriver, has actuator portion, included in speed selector mechanism, which moves reduction gear set between active and inactive modes |
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Address after: 315145 Zhejiang city of Ningbo province Yinzhou District Binhai Investment Center East Yin Road No. 188 Patentee after: Zhejiang Minglei lithium energy technology Co., Ltd Address before: 315145 Zhejiang city of Ningbo province Yinzhou District Binhai Investment Center East Yin Road No. 188 Patentee before: ZHEJIANG MINGLEI TOOLS INDUSTRY Co.,Ltd. |