CN104625219A - Portable type cutting machine - Google Patents
Portable type cutting machine Download PDFInfo
- Publication number
- CN104625219A CN104625219A CN201310561226.4A CN201310561226A CN104625219A CN 104625219 A CN104625219 A CN 104625219A CN 201310561226 A CN201310561226 A CN 201310561226A CN 104625219 A CN104625219 A CN 104625219A
- Authority
- CN
- China
- Prior art keywords
- motor
- hole clipping
- portable cutter
- latch
- saw blade
- 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.)
- Pending
Links
Abstract
The invention provides a portable type cutting machine. The portable type cutting machine comprises a shell, a motor, a transmission mechanism and a saw blade, wherein the motor is contained in the shell, the transmission mechanism is driven by the motor, and the saw blade is driven by the transmission mechanism to rotate around a rotating axis line. The motor is provided with an output shaft. The transmission mechanism comprises a belt transmission mechanism body and a locking mechanism for limiting movement of the belt transmission mechanism body. According to the portable type cutting machine, saw blades can be replaced conveniently and safely.
Description
Technical field
The present invention relates to a kind of power tool, especially relate to a kind of portable cutter.
Background technology
Portable cutter, such as portable electric annular saw generally includes housing, the motor be contained in housing, by motor by transmission mechanism drive rotate saw blade, saw blade rotate can cut the workpiece of multiple material, be widely used.
The transmission mechanism of common portable cutter adopts gear drive usually, and to reach the effect of deceleration and drive motor power, gear drive cost is high and noise is large; And, saw blade in cutting process, run into larger resistance and stall time, gear drive stall with saw blade stall, easily causes motor lock-rotor and burns.
In addition, portable cutter operationally often needs to change saw blade, and existing portable cutter does not have locking mechanism, when changing saw blade, saw blade may be struck and rotate, and this is unfavorable for the operation changing saw blade very much, and the saw blade rotated may bring injury to operator.
Summary of the invention
For overcoming the defect of prior art, problem to be solved by this invention is to provide a kind of cost and the lower and portable cutter of use safety of noise.
For solving the problem, technical scheme of the present invention is:
A kind of portable cutter, comprise housing, be contained in the motor in described housing, the transmission mechanism driven by described motor, the saw blade rotated around a rotation is driven by described transmission mechanism, described motor has output shaft, described transmission mechanism comprises belt gear, described belt gear comprises the drive sprocket axle being driven rotation by described motor, be arranged on the driving wheel on described drive sprocket axle, the follower shaft be connected with described saw blade, be arranged on the driven pulley on described follower shaft and be stretched in the belt on described driving wheel and described driven pulley, described portable cutter also comprises the locking mechanism of the described belt gear motion of restriction.
Preferably, described locking mechanism is exercisable acts on described driven pulley or described follower shaft.
Preferably, described locking mechanism comprises the hole clipping be arranged on described belt gear, the latch be movably arranged on described housing, and described latch can move between the two positions, and in primary importance, described latch inserts in described hole clipping; In the second place, described latch and described hole clipping depart from.
Preferably, the number of described hole clipping is multiple, uniform being arranged on described driven pulley of described multiple hole clipping circumference.
Preferably, the number of described hole clipping is multiple, uniform being arranged on described follower shaft of described multiple hole clipping circumference.
Preferably, the number of described hole clipping is multiple, and described follower shaft is provided with girth member, uniform being arranged on described girth member of described multiple hole clipping circumference
Preferably, described locking mechanism also comprises the elastic component be arranged between described housing and described latch, and described elastic component makes described latch remain on the described second place to described latch force.
Preferably, described transmission mechanism also comprises bevel gear transmission, and described bevel gear transmission comprises the pinion driven by described motor, the gear wheel be connected with described drive sprocket axle, described pinion and the engagement of described gear wheel.
Preferably, described housing comprise arrange in turn front portion, grip part and rear portion, the at least part of saw blade of described front portion collecting, described rear portion lengthwise extends and accommodates described motor, described transmission mechanism also comprises the major axis for connecting described motor and described belt gear, and described major axis is housed in described grip part.
Preferably, the output shaft axis of described motor is vertical with the rotation of described saw blade.
Compared with prior art, the transmission mechanism of portable cutter of the present invention comprises belt gear, effectively can reduce cost and the operating noise of portable cutter, and, belt gear saw blade run into larger resistance and stall time can automatically skid, prevent motor lock-rotor, extend the service life of motor and portable cutter.More excellent, portable cutter of the present invention also comprises the locking mechanism of locking belt gear, and when belt gear locks, saw blade no longer rotates, can be convenient and safe change saw blade.
Accompanying drawing explanation
Below in conjunction with drawings and embodiments, the invention will be further described.
Fig. 1 is the front view of the portable cutter that first embodiment of the invention provides, and its middle shell grip part and rear portion are cut open internal structure is shown;
Fig. 2 is the top view of the portable cutter shown in Fig. 1, and the anterior partly cut-away of its middle shell is to illustrate internal structure;
Fig. 3 is the enlarged diagram of the part A of the portable cutter shown in Fig. 2;
Fig. 4 is the top view of the portable cutter that second embodiment of the invention provides, and the anterior partly cut-away of its middle shell is to illustrate internal structure.
Wherein,
Detailed description of the invention
Incorporated by reference to Fig. 1 and Fig. 2, the portable cutter 100 of the present embodiment, comprise housing 20, the motor 22 be contained in housing, by motor 22 by transmission mechanism drive rotate saw blade 26.Saw blade 26 rotates and can cut the workpiece of various material.
Housing 20 comprise arrange in turn front portion 28, grip part 30 and rear portion 32, at least part of saw blade 26 of anterior 28 collecting, rear portion 32 lengthwise extends and accommodates motor 22.
Transmission mechanism comprises the bevel gear transmission 36 and belt gear 38 that connect in turn.Transmission mechanism also comprises and is finally connected the major axis 34 of belt gear 38 for connecting motor with bevel gear transmission 36, and major axis 34 is housed in grip part 30.Because motor 22, bevel gear and belt gear are heavier, motor 22, bevel gear and belt gear are separately positioned on front portion 28 and the rear portion 32 of housing 20, and grip part 30 is arranged between anterior 28 and rear portion 32, the distribution of weight of portable cutter 100 can be made comparatively to balance, and center of gravity is positioned at grip part 30, comfortable and labour-saving portable cutter 100 can be gripped and cut workpiece.And major axis 34 is housed in grip part 30, therefore, other volume larger transmission mechanism is not set in grip part 30, significantly can reduces the volume of grip part 30, further increase the gripping comfortableness of portable cutter 100, thus handled easily.
Bevel gear transmission 36 comprises intermeshing pinion 40 and gear wheel 42, and pinion 40 is arranged on major axis 34, can be integrally formed with major axis 34, also can be fixedly connected with major axis 34.Gear wheel 42 has gear shaft 44, and gear shaft 44 is vertical with major axis 34.
Belt gear 38 comprise drive the drive sprocket axle 52 of rotation by motor 22, the driving wheel 46 be arranged on drive sprocket axle 52, the follower shaft 54 be connected with saw blade 26, the belt 50 that is arranged on the driven pulley 48 on follower shaft 54 and is stretched on driving wheel 36 and driven pulley 38.In the present embodiment, drive sprocket axle 52 is coaxially arranged with the gear shaft 44 of gear wheel 42, and both also can be wholely set, thus gear wheel 42 Direct driver drive sprocket axle 52 and driving wheel 46 are rotated.Follower shaft 54 be arranged in parallel with drive sprocket axle 52, vertical with major axis 34, saw blade 36 is connected on follower shaft 54.
Thus motor 22 is when driving major axis 34 to rotate, pinion 40 also drives the gear wheel 42 be engaged with to rotate with major axis 34 synchronous rotary, gear wheel 42 rotates driven gear axle 44, drive sprocket axle 52, driving wheel 46 synchronous rotary successively, driving wheel 46 is rotated through belt 50 and drives driven pulley 48 and follower shaft 54 to rotate, and follower shaft 54 rotarily drives saw blade 26 and rotates thus cut workpiece.
The transmission mechanism of the present embodiment comprises bevel gear transmission 36, can commutate to the Power output of major axis 34, and driving wheel 46 is coaxial with gear wheel 42, saw blade 26 is connected on the wheel shaft 54 of driven pulley 48, thus make the rotation of saw blade 26 and the axes normal of motor 22 output shaft, motor output shaft and the major axis 34 of the present embodiment are wholely set, and topology layout is reasonable, portable cutter easy to use.Certainly, except the bevel gear transmission of the present embodiment, also other gear drive can be adopted, as face gear transmissions mechanism commutates to the Power output of motor output shaft.
The transmission mechanism of the present embodiment comprises belt gear 38, and belt gear 38 effectively can reduce cost and the operating noise of portable cutter.For reducing cost and the operating noise of portable cutter further, it may occur to persons skilled in the art that, can also bevel gear transmission be cancelled, only transmit the power of motor with belt gear.
More excellent, belt gear saw blade run into larger resistance and stall time can automatically skid, prevent motor lock-rotor, extend the service life of motor and portable cutter.Specific to the present embodiment, when saw blade 26 runs into larger resistance and turns motionless, follower shaft 54 stall of saw blade 26 is installed, driven pulley 48 stall synchronous with follower shaft 54, and motor 22 remains in operation and by bevel gear transmission 36 drive driving wheel 46 continue rotate, due to driven pulley 48 stall, the belt 50 be stretched on driving wheel 46 and driven pulley 48 skids, belt 50 stall or slowly rotate, although it can not drive driven pulley 48 to rotate but also can not affect driving wheel 46 continue motion under motor 22 drives, thus motor can not stall and being burnt, extend the life-span of motor and portable cutter.
In the present embodiment, the driven pulley of belt gear only has one, it may occur to persons skilled in the art that, the power adopting plural driven pulley to transmit motor output also can.
Incorporated by reference to Fig. 2 and Fig. 3, portable cutter 100 also comprises the locking mechanism 56 that restriction belt gear 38 moves.
The locking mechanism 56 of the present embodiment is exercisable to be acted on driven pulley 48, driven pulley 48 can be made when locking mechanism 56 works no longer to rotate, when driven pulley 48 no longer rotates, saw blade 26 also no longer rotates, replacing saw blade 26 that can be safe, change the workpiece that different saw blades can cut different materials, changing saw blade also can be replace the saw blade worn and torn.
Locking mechanism 56 comprises the hole clipping 58 be arranged on driven pulley 48, the latch 60 be movably arranged on housing 20, and latch 60 can move between the two positions.As shown in Figure 3, in primary importance, shown in dotted line, latch 60 inserts in hole clipping 58, and driven pulley 48 locks by locking mechanism 56, replacing saw blade that can be safe; In the second place, as shown by the solid line, latch 60 and hole clipping 58 depart from, and driven pulley 48 is free to rotate, thus saw blade can rotate freely with cut workpiece.
In the present embodiment, the number of hole clipping 58 is multiple, uniform being arranged on driven pulley 48 of multiple hole clipping 58 circumference.Therefore, during locking belt gear, when operator rotates saw blade 26 and rotates driven pulley 48, can be very fast find the hole clipping 58 can inserted for latch 60, easy to use, save time.It may occur to persons skilled in the art that, only arranging a hole clipping 58 does not also affect result of use, and all employings and the similar technical scheme of the present embodiment all should be encompassed in protection scope of the present invention.
In the present embodiment, the front portion 28 of housing 20 is provided with the through hole 64 that can pass for latch 60, and latch 60 stretches out outside the front portion 28 of housing 20 away from one end of hole clipping 58 through through hole 64, and for convenience of operation, the one end away from hole clipping 58 is fixed with operating parts 66 with latch 60.The surface area of operating parts 66 is greater than the area of section of latch 60.Therefore, promote operating parts 66 and indirectly promote latch 60 and move and compare that directly to promote latch 60 conveniently moving laborsaving.In addition, for locking belt gear reliably, latch 60 adopts metal to make, and as steel is made, and operating parts 66 is adopted made of plastic, and relative to metal bolt 60, Plastic process part 66 can provide more comfortable sense of touch.
Housing front portion 28 is extruded with cylindricality host cavity 70 to accommodate part and the part operation part 66 that latch 60 exposes housing front portion 28, can provide good operation interface for operator.
Dust can affect the normal of transmission mechanism by housing anterior 28 for the through hole 64 that latch 60 passes enters in housing anterior 28, and for this reason, anterior 28 surfaces of housing are provided with seal washer 68 with dust-proof at through hole 64 place.
Locking mechanism 56 also comprises the elastic component 62 be arranged between housing 20 and latch 60, and elastic component 62 pairs of latch 60 forces make latch 60 remain on the second place.Therefore, locking mechanism 56 can not lock belt gear 38 under normal conditions and make cutting machine 100 can cut workpiece at any time.When saw blade 26 changed by needs, the elastic force that only need overcome elastic component 62 makes latch 60 insert in hole clipping 58, and driven pulley 48 keeps the state of not rotating, thus safety changes saw blade.
The elastic component 62 of the present embodiment is helical spring, screw thread spring is set on latch 60, helical spring is in compressive state all the time, one end abuts with seal washer 68 and finally abuts with housing 20, ensure the dust-proof effect of seal washer 68, the other end abuts with operating parts 66 and exerts a force to operating parts 66 along the direction away from hole clipping 58, thus makes the relatively-stationary latch 60 with operating parts 66 remain on the second place away from hole clipping 58.In order to prevent latch 60 from departing from housing under elastic component 62 acts on, the part that latch 60 is positioned at housing is provided with step surface 72, and step surface 72 abuts with the shell inner surface of through hole 64 side and can prevent latch 60 and housing from departing from.
Fixing helical spring for convenience, operating parts 66 is provided with the cannelure 74 of collecting helical spring one end, and thus, helical spring is positioned between seal washer 68 and operating parts 66 reliably.It may occur to persons skilled in the art that, adopt the elastic component of other form and corresponding elastic component thereof to connect relation and also can reach similar effect, all employings and the similar technical scheme of the present embodiment all should be encompassed in protection scope of the present invention.
The using method of the cutting machine 100 of the present embodiment is described below.
Under normal conditions, operator's starter, namely motor drives saw blade 26 to rotate by bevel gear transmission 36 and belt gear 38 and cuts workpiece.
When preparing to change saw blade 26, first close motor.
If do not use locking mechanism 56 and directly change saw blade 26, change the operation of saw blade 26 and saw blade 26 can be made to rotate, saw blade 26 rotation can drive the major axis 34 of belt gear 38, bevel gear transmission 36 and motor 22 to rotate, and uses inconvenience and dangerous.
For convenience of the replacing saw blade of safety, operator need use locking mechanism 56 to lock belt gear 38.Concrete, operator can along the direction pressing operation part 66 towards hole clipping 58, thus the effect overcoming elastic component 62 drives latch 60 to move along the direction towards hole clipping 58, when latch 60 and hole clipping 58 are on time, latch 60 enters in hole clipping 58, driven pulley 48 no longer rotates, and saw blade 26 and major axis 34 and rotations all between the two all stop, the replacing saw blade that operator can be convenient and safe.
If pressing operation part 66, but latch 60 and hole clipping 58 are not aimed at when cannot lock, and operator can rotate saw blade 26, saw blade 26 rotates and drives driven pulley 48 to rotate, the corresponding rotation of hole clipping 58 on driven pulley 48, when hole clipping 58 and latch 60 are on time, both can coordinate locking driven pulley 48.
The cutting machine of the present embodiment is owing to being provided with the locking mechanism of locking belt gear, and when belt gear locks, saw blade no longer rotates, can be convenient and safe change saw blade.
Fig. 4 shows the portable cutter 200 of second embodiment of the invention.
With embodiment one unlike, the locking mechanism 256 of the present embodiment is exercisable to be acted on the follower shaft 254 of driven pulley 248.For locking follower shaft 254 reliably, follower shaft 254 is provided with girth member 255, the hole clipping 258 that can connect with latch 260 is arranged on girth member 255.When operating parts pressing bolt 260 makes latch 260 insert hole clipping 258, follower shaft 254 no longer rotates, and accordingly, saw blade 226 no longer rotates, can the changing saw blade of safe ready.
Similar with embodiment one, the number of the present embodiment hole clipping 258 is multiple, uniform being arranged on girth member 255 of multiple hole clipping 258 circumference.Therefore, during locking belt gear, when operator rotates saw blade 226 and rotates follower shaft 254, can be very fast find the hole clipping 258 can inserted for latch 260, easy to use, save time.
It may occur to persons skilled in the art that, follower shaft 254 does not arrange girth member 255, and hole clipping 258 is set directly at the object that follower shaft 254 also can realize locking follower shaft 254.
It may occur to persons skilled in the art that, the present invention can also have other implementation, as long as but its technical spirit adopted is identical with the present invention or close, or any change of making based on the present invention and replacing all within protection scope of the present invention.
Claims (10)
1. a portable cutter, comprise housing, be contained in the motor in described housing, the transmission mechanism driven by described motor, the saw blade rotated around a rotation is driven by described transmission mechanism, described motor has output shaft, it is characterized in that: described transmission mechanism comprises belt gear, described belt gear comprises the drive sprocket axle being driven rotation by described motor, be arranged on the driving wheel on described drive sprocket axle, the follower shaft be connected with described saw blade, be arranged on the driven pulley on described follower shaft and be stretched in the belt on described driving wheel and described driven pulley, described portable cutter also comprises the locking mechanism of the described belt gear motion of restriction.
2. portable cutter as claimed in claim 1, is characterized in that: described locking mechanism is exercisable to be acted on described driven pulley or described follower shaft.
3. portable cutter as claimed in claim 1, it is characterized in that: described locking mechanism comprises the hole clipping be arranged on described belt gear, the latch be movably arranged on described housing, described latch can move between the two positions, in primary importance, described latch inserts in described hole clipping; In the second place, described latch and described hole clipping depart from.
4. portable cutter as claimed in claim 3, is characterized in that: the number of described hole clipping is multiple, uniform being arranged on described driven pulley of described multiple hole clipping circumference.
5. portable cutter as claimed in claim 3, is characterized in that: the number of described hole clipping is multiple, uniform being arranged on described follower shaft of described multiple hole clipping circumference.
6. portable cutter as claimed in claim 3, is characterized in that: the number of described hole clipping is multiple, and described follower shaft is provided with girth member, uniform being arranged on described girth member of described multiple hole clipping circumference.
7. portable cutter as claimed in claim 3, is characterized in that: described locking mechanism also comprises the elastic component be arranged between described housing and described latch, and described elastic component makes described latch remain on the described second place to described latch force.
8. portable cutter as claimed in claim 1, it is characterized in that: described transmission mechanism also comprises bevel gear transmission, described bevel gear transmission comprises the pinion driven by described motor, the gear wheel be connected with described drive sprocket axle, described pinion and the engagement of described gear wheel.
9. portable cutter as claimed in claim 1, it is characterized in that: described housing comprise arrange in turn front portion, grip part and rear portion, the at least part of saw blade of described front portion collecting, described rear portion lengthwise extends and accommodates described motor, described transmission mechanism also comprises the major axis for connecting described motor and described belt gear, and described major axis is housed in described grip part.
10. portable cutter as claimed in claim 1, is characterized in that: the output shaft axis of described motor is vertical with the rotation of described saw blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310561226.4A CN104625219A (en) | 2013-11-12 | 2013-11-12 | Portable type cutting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310561226.4A CN104625219A (en) | 2013-11-12 | 2013-11-12 | Portable type cutting machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104625219A true CN104625219A (en) | 2015-05-20 |
Family
ID=53204712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310561226.4A Pending CN104625219A (en) | 2013-11-12 | 2013-11-12 | Portable type cutting machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104625219A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4467896A (en) * | 1983-06-17 | 1984-08-28 | Black & Decker Inc. | Locking mechanism for a rotary power machine |
| CN1396848A (en) * | 2000-12-02 | 2003-02-12 | 罗伯特·博施有限公司 | Hand machine tool |
| DE102004043397A1 (en) * | 2004-09-03 | 2006-03-23 | Flex-Elektrowerkzeuge Gmbh | Hand-held machine tool for machining in narrow areas has tool holder with movable extending arm whereby belt is stretched in working position of the extending arm and unwound in one or more positions beyond working position |
| CN101767223A (en) * | 2008-12-31 | 2010-07-07 | 创科电动工具科技有限公司 | Hand-held power tool |
| CN102335785A (en) * | 2010-07-21 | 2012-02-01 | 苏州宝时得电动工具有限公司 | Handheld tool |
| CN203621617U (en) * | 2013-11-12 | 2014-06-04 | 苏州宝时得电动工具有限公司 | Portable cutting machine |
-
2013
- 2013-11-12 CN CN201310561226.4A patent/CN104625219A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4467896A (en) * | 1983-06-17 | 1984-08-28 | Black & Decker Inc. | Locking mechanism for a rotary power machine |
| CN1396848A (en) * | 2000-12-02 | 2003-02-12 | 罗伯特·博施有限公司 | Hand machine tool |
| DE102004043397A1 (en) * | 2004-09-03 | 2006-03-23 | Flex-Elektrowerkzeuge Gmbh | Hand-held machine tool for machining in narrow areas has tool holder with movable extending arm whereby belt is stretched in working position of the extending arm and unwound in one or more positions beyond working position |
| CN101767223A (en) * | 2008-12-31 | 2010-07-07 | 创科电动工具科技有限公司 | Hand-held power tool |
| CN102335785A (en) * | 2010-07-21 | 2012-02-01 | 苏州宝时得电动工具有限公司 | Handheld tool |
| CN203621617U (en) * | 2013-11-12 | 2014-06-04 | 苏州宝时得电动工具有限公司 | Portable cutting machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109249453B (en) | Two unification filament cutting combiner and rotation type filament cutter | |
| CN203621617U (en) | Portable cutting machine | |
| CN209774188U (en) | Cutting mechanism for round bar machine | |
| CN203621618U (en) | Portable cutting machine | |
| CN204108466U (en) | Porous intersection position flash trimmer | |
| CN104625219A (en) | Portable type cutting machine | |
| EP2754542B1 (en) | Cutting saw with safety protection device | |
| CN104625218A (en) | Portable type cutting machine | |
| CN210476569U (en) | Grinder convenient to speed governing | |
| CN210147060U (en) | Hand-held electric drill with protective device | |
| US20080201961A1 (en) | Electric nibbler | |
| CN110549122B (en) | Boring and milling dual-purpose switching processing equipment | |
| US20110297767A1 (en) | One-way driving mechanism for the paper removal device of a shredder | |
| CN205614461U (en) | Multi -functional automatic protection angle mill of slipping out of hand | |
| CN208246875U (en) | Charged electric scissors | |
| CN112207620A (en) | Automatic blank handle mechanism | |
| CN111113729A (en) | Cable recovery device | |
| CN110181719A (en) | A kind of plastic crushing disintegrating mechanism | |
| CN213794450U (en) | PCD spiral milling cutter | |
| CN110202385A (en) | A kind of brill mill integrated mechanical system of processing of Anti-splash | |
| CN108908512A (en) | A kind of intelligence hard wooden floor block process equipment | |
| CN204658716U (en) | A kind of crucible process tool | |
| CN2638886Y (en) | Automatic electric bevelling machine | |
| CN204658051U (en) | External-expanding type C type pipeline automatic beveling machine | |
| CN219705372U (en) | Large-feeding-port electric vegetable cutter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150520 |
|
| RJ01 | Rejection of invention patent application after publication |