CN201231349Y - Safe electric saw - Google Patents
Safe electric saw Download PDFInfo
- Publication number
- CN201231349Y CN201231349Y CNU2008201203978U CN200820120397U CN201231349Y CN 201231349 Y CN201231349 Y CN 201231349Y CN U2008201203978 U CNU2008201203978 U CN U2008201203978U CN 200820120397 U CN200820120397 U CN 200820120397U CN 201231349 Y CN201231349 Y CN 201231349Y
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- CN
- China
- Prior art keywords
- housing
- saw blade
- electric saw
- safe electric
- microswitch
- 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.)
- Expired - Lifetime
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Abstract
The utility model discloses a miniature hand electric saw. When a saw blade is replaced under the condition that an attaching plug is not pulled out or the electricity is not disconnected, larger potential safety hazard exists. The miniature hand electric saw comprises a shell and a motor arranged in the shell, wherein the output shaft of the motor is connected with the saw blade positioned outside the shell through a positive speed gearbox assembly, and the bottom part of the shell is axially connected with a movable protecting cap matching with the front end of the shell. The miniature hand electric saw is characterized in that the shell is internally provided with a microswitch and a deflector rod controlling the microswitch to work through moving up and down, the microswitch and the motor as well as a mains switch are connected in series. When the saw blade needs to be replaced, the movable protecting cap is completely opened, the front end of the movable protecting cap is separated from the shell, the deflector rod downwards moves to cause the microswitch to be disconnected, even if the mains switch is pressed negligently, the motor can not normally work, the saw blade can be safely replaced, thereby the potential safety hazard of replacing the saw blade is overcome.
Description
Technical field
The utility model relates to power supply saw, specifically a kind of small-sized hand held safety electric saw.
Background technology
The existing power supply saw that adopts extraneous power supply power supply because the bottom of its saw blade is exposed at outside the housing, is hurted sb.'s feelings easily, is also damaged by other hard thing easily; Saw blade is in the high speed rotation status when work, the people is injured with regard to running into saw blade easily unless you give your whole attention to it, and there is great potential safety hazard in present power supply saw.For this reason, a kind of electric saw with movable shield has appearred, overcome above-mentioned defective, but it does not pull out or when not changing saw blade under the disconnected situation of electricity at attaching plug, just in case run into power switch because of carelessness, makes machine operation, the saw blade rotation, and change the hand of saw blade owing to be subjected to stopping of movable shield and can't recall fast, finger is hurt or is cut off easily, has bigger potential safety hazard when changing saw blade.
The utility model content
Technical problem to be solved in the utility model is to overcome the defective that above-mentioned prior art exists, and a kind of safe electric saw is provided, and makes it not have replacing saw blade safety under the powering-off state.
For this reason, the utility model adopts following technical scheme: a kind of safe electric saw, comprise housing and place the interior motor of housing, the output shaft of described motor is connected by the reduction box assembly saw blade outer with being positioned at housing, the bottom of the housing movable shield that cooperates with the housing front end that is coupling, it is characterized in that being provided with in the housing microswitch and by moving up and down the driving lever of controlling microswitch work, described microswitch and motor and a power switch are in series.When needs are changed saw blade, movable shield to be opened fully, the front end of movable shield and housing break away from, driving lever moves down microswitch is disconnected, even pressed power switch because of carelessness, motor also can't be worked, can change saw blade safely, overcome the potential safety hazard that exists when changing saw blade.
As the further of technique scheme improved and replenish, the utility model is taked following technical measures:
Above-mentioned safe electric saw has a stage clip between the upper end of driving lever and the housing, conflict on the movable shield that is positioned at the place that is coupling in the lower end of driving lever.When movable shield was opened fully, promptly the front end of movable shield and housing broke away from, and in this process, stage clip makes the driving lever lower ends downward slide into the microswitch disconnection, can change saw blade safely; When movable shield was connected on the housing, in the rotation process of movable shield, the movable shield that is positioned at the place of being coupling was upwards slided the driving lever lower end, and microswitch is connected, and press power switch this moment can make machine operation.
Above-mentioned safe electric saw, the all oblique setting of microswitch and driving lever, the front end of stage clip is provided with a block that is fixed on the inner walls, and inner walls is provided with the slide rail that is positioned at the driving lever both sides and is located at the spacer in the driving lever outside, and this spacer is fixed on the inner walls by nut.Slide rail moves at driving lever in the process of (or slide) position-limiting action is played in its both sides, and spacer plays the role of positioning to driving lever.
Above-mentioned safe electric saw, the reduction box assembly comprises reduction box, be installed in a pair of intermeshing bevel gear in the reduction box front portion and be positioned at the helical gear at reduction box rear portion, described helical gear and one of them bevel gear realize rotating synchronously by a gear shaft, and saw blade is connected with another bevel gear by a turning cylinder; The head of motor output shaft places in the reduction box, and its head helical teeth cooperates with helical gear.Motor output shaft drives helical gear and rotates, because a helical gear and a bevel gear all are fixedly mounted on the same gear shaft, thereby power is passed to saw blade by the turning cylinder that is installed on another bevel gear, by the bevel gear change rotation direction and the deceleration of pair of meshing.The utility model is converted to perpendicular saw blade rotation direction by the reduction box assembly with the rotation direction of motor output shaft, thereby makes the residing plane of saw blade parallel with motor output shaft.The utility model changes the vertical mode on present motor output shaft and saw blade plane of living in into parallel mode, has reduced the overall volume of electric saw more greatly, thereby has alleviated whole weight, and it is laborsaving to hold electric saw, and operation easily.
Above-mentioned safe electric saw, be provided with torsion spring between the bottom of housing and the movable shield, this movable shield is connected by a cage knob with the front end of housing, and the front end of housing has one and is used for the arc chute that move the cage knob lower end, and the bottom of movable shield has one and is used for the through hole that saw blade passes in and out.Under the normality, the cage knob lower end on the movable shield is in the lowest order of arc chute, has stoped movable shield to rotate, and movable shield covers the bottom of saw blade fully, prevents that saw blade is damaged, and has prevented that also the people from being hurt by saw blade; Under the duty, according to the depth of cut of reality the lower end of cage knob is moved around in chute, saw blade passes through hole and comes cut workpiece.
Above-mentioned safe electric saw, the upper end of movable shield forms a pedestal, a pressing plate is fixed at the top of pedestal, described cage knob comprises the button body of pin and sleeve on pedestal that runs through pedestal and pressing plate, form two on the outer wall of pin and be the projection that is symmetrically distributed and conflicts on pedestal, the button body is affixed by screw and pin, and a stage clip that is enclosed within on the pin is arranged between pressing plate and the projection, and the bottom of pin cooperates with chute.As long as make progress the pull-button body, stage clip is compressed, and the bottom of pin also moves upward until breaking away from chute, and at this moment movable shield can be opened fully, convenient for maintaining and replacing saw blade.
Above-mentioned safe electric saw, chute is built-in with an arc cutting-in adjusting slider movably, form a hollow mount pad on it, a nut is fixed in the bottom of this mount pad, cutting-in scale indicator collet is housed on the mount pad and runs through the height screw of indicator collet, the bottom of a high screw is connected with nut, have one to be positioned at mount pad and to be enclosed within stage clip on the screw between a nut and the high screw, the housing front end place that has chute is provided with many groove shape graduation marks, and many location convex tendons that are used with graduation mark are arranged at the bottom of indicator collet.Qie Ge the degree of depth as requested, come mobile adjusting slider and indicator collet by moving a high screw, when indicator collet moves to corresponding graduation mark place, tighten a high screw, stage clip is compressed, the convex tendon of indicator collet bottom is pressed in the groove of graduation mark formation, and indicator collet also plays the effect of locking except playing indicative function to adjusting slider.Unclamp a high screw in the opposite direction, stage clip resets, and the convex tendon of indicator collet bottom breaks away from groove, has removed the lockup state of adjusting slider.
Above-mentioned safe electric saw, a button spindle is equipped with on the top of inner walls, the upper end of this button spindle forms and is exposed at the outer hat button of housing under the normality, one stage clip that is enclosed within button spindle is arranged between button and the inner walls, the lower end of button spindle forms a ramp, be provided with in the housing one with the pivoted arm of button spindle interlock, the lower inclined plane that the formation one of one end and the ramp of this pivoted arm is used, the other end connection one of pivoted arm and the lock shaft of its interlock, this lock shaft runs through the sidewall of housing, its outer end cooperates with a breach on the movable shield, innerly cooperates with a stage clip.Under the normality, the outer end of lock shaft is exposed to outside the housing, place the breach on the movable shield, lock shaft has stoped movable shield upwards to be rotated, movable shield under being in the normal state like this is locked on the housing fully, can't rotate, and movable shield covers saw blade fully, so both avoid saw blade to hurt sb.'s feelings, and also avoided saw blade to be damaged.During work, push the hat button downwards, button spindle promotes pivoted arm and rotates, and inwardly moves thereby drive lock shaft, and stage clip is compressed, and when the outer face of lock shaft flushed with the housing outer wall, movable shield just can upwards be rotated.Button spindle, lock shaft utilization stage clip separately reset.
Above-mentioned safe electric saw, the hat button is positioned at the front end of housing grip part, conveniently uses finger manipulation, can finish pushing of button spindle when holding electric saw; Tumbler shaft is connected on the sidewall of a pivoted arm bearing, and this pivoted arm bearing is fixed on the inner walls, and pivoted arm is rotated flexibly.
Above-mentioned safe electric saw is equipped with a perpendicular auxiliary lever on the housing, this lever and saw blade are in the same side, and one holds housing, and another is held lever, and is more stable when making saw blade work like this.
The utlity model has following beneficial effect: under powering-off state not, the replacing of saw blade or maintenance safety; The front end of movable shield can be fully and housing throw off, saw blade is changed and is easy to maintenance; Volume is little, and is in light weight, and rapid operation is easy to carry.
Below in conjunction with specification drawings and specific embodiments the utility model is further described.
Description of drawings
Fig. 1 removes structural representation (movable shield is opened fully) behind the reduction box assembly for the utility model.
Fig. 2 is a structural representation of the present utility model.
Fig. 3 is the structural representation of the utility model reduction box assembly.
Fig. 4 be among Fig. 3 B-B to cutaway view.
Fig. 5 is the structural representation of the utility model cage knob.
Fig. 6 is the side view of Fig. 2.
Fig. 7 is the front view of Fig. 2.
Illustration: 1～housing, 2～motor, 3～reduction box assembly, 4～saw blade, 5～auxiliary lever, 6～secure shroud, 7～movable shield, 8～torsion spring, 9～lock knob, 10～arc chute, 11～pedestal, 12～pressing plate, 13～cutting-in adjusting slider, 14～mount pad, 15～indicator collet, a 16～high screw, 17～graduation mark, 18～button spindle, 19～pivoted arm, 20～lock shaft, 22～pivoted arm bearing, 23～microswitch, 24～driving lever, 26～power switch, 27～block, 28～spacer, 30～slide rail, 31～reduction box, 32,33～bevel gear, 34～helical gear, 35～gear shaft, 36～turning cylinder, 37～installation foot, 91～pin, 92～button body, 93～projection.
The specific embodiment
A kind of safe electric saw as shown in the figure places the output shaft of the motor 2 in the housing 1 to be connected by reduction box assembly 3 saw blade 4 outer with being positioned at housing, and a perpendicular auxiliary lever 5 is housed on the housing 1, and this lever 5 and saw blade 4 are in the same side of housing 1.Secure shroud 6 is housed on the housing 1, and its first half with saw blade 4 covers.Described reduction box assembly 3 is made up of reduction box 31, a helical gear 34 being installed in a pair of intermeshing bevel gear 32,33 in the reduction box front portion and being positioned at the reduction box rear portion.Described helical gear 34 is realized rotating synchronously by gear shaft 35 with one of them bevel gear 33, and helical gear 34 is affixed by flat key and gear shaft 35, and saw blade 4 is connected with another bevel gear 32 by turning cylinder 36.Change the rotation direction of motor output shaft into perpendicular rotation direction by a pair of intermeshing bevel gear, make the residing plane of saw blade parallel with motor output shaft.The head of motor 2 output shafts places in the reduction box 31, the skewed slot that the helical teeth that its outer wall forms cooperates with helical gear 34, and reduction box 31 is contained on the inwall of housing 1 by the installation foot on it 37.
The bottom center place of housing 1 movable shield 7 that is coupling, torsion spring 8 is housed between the two, this movable shield 7 is connected by cage knob 9 with the front end of housing 1, the front end of housing 1 has one and is used for the arc chute 10 that move cage knob 9 lower ends, and the bottom of movable shield 7 has a through hole (not shown) that is used for the saw blade turnover.The upper end of movable shield 7 forms a pedestal 11, the top of pedestal 11 is fixed with pressing plate 12, described cage knob 9 is made up of pin 91 that runs through pedestal 11, pressing plate 12 and the button body 92 that is enclosed within on the pedestal 11, form two on the outer wall of pin 91 and be the projection 93 that is symmetrically distributed and conflicts on pedestal, button body 92 is affixed by screw and pin 91, one stage clip that is enclosed within on the pin 91 is arranged between pressing plate 12 and the projection 93, and the bottom of pin 91 cooperates with arc chute 10.
A button spindle 18 is equipped with on the top of housing 1 inwall, the upper end of this button spindle 18 forms and is exposed at the outer hat button of housing under the normality, button is positioned at the front end of housing grip part, one stage clip that is enclosed within button spindle 18 is arranged between button and the inner walls, the lower end of button spindle 18 forms inclined-plane ramp down, be provided with in the housing 1 one with the pivoted arm 19 of button spindle 18 interlock, the lower inclined plane that the formation one of one end and the ramp of this pivoted arm 19 is used, the inclined-plane of lower inclined plane up, the other end of pivoted arm 19 connects the lock shaft 20 with its interlock.This lock shaft 20 runs through the sidewall of housing, and its outer end cooperates with a breach on the movable shield 7, innerly cooperates (not shown) with a stage clip.Pivoted arm 19 is coupling on the sidewall of pivoted arm bearing 22, and this pivoted arm bearing 22 is fixed on the inner walls.
The microswitch 23 of one oblique setting and the driving lever 24 that can slide up and down are arranged in the housing 1, realize control, microswitch is disconnected or closed microswitch by moving up and down of driving lever.One stage clip is arranged between the upper end of driving lever 24 and the housing, conflict on the movable shield 7 that is positioned at the place that is coupling in the lower end of driving lever 24, the front end of stage clip is provided with a block 27 that is fixed on the inner walls, block plays the effect of location to stage clip, and inner walls is provided with slide rail 30 that is positioned at the driving lever both sides and the spacer 28 that is located at the driving lever outside.Microswitch 23, motor 2 and power switch 26 threes are in series.
The course of work that the utility model is changed saw blade is as follows: as long as make progress the pull-button body, stage clip is compressed, the bottom of pin also moves upward until breaking away from chute, at this moment movable shield can be opened fully, in this process, the elastic force of stage clip makes the driving lever lower ends downward slide into the microswitch disconnection, power cut-off, and can change saw blade this moment safely.
The above only is preferred embodiment of the present utility model, is not structure of the present utility model is done any pro forma restriction.Every foundation technical spirit of the present utility model all falls in the protection domain of the present utility model any simple modification, equivalent variations and modification that above embodiment did.
Claims (10)
1, a kind of safe electric saw, comprise housing and place the interior motor of housing, the output shaft of described motor is connected by the reduction box assembly saw blade outer with being positioned at housing, the bottom of the housing movable shield that cooperates with the housing front end that is coupling, it is characterized in that being provided with in the housing microswitch and by moving up and down the driving lever of controlling microswitch work, described microswitch and motor and a power switch are in series.
2, safe electric saw according to claim 1 is characterized in that between the upper end of described driving lever and the housing stage clip being arranged, and conflicts on the movable shield that is being positioned at the place that is coupling in the lower end of driving lever.
3, safe electric saw according to claim 2, it is characterized in that all oblique setting of microswitch and driving lever, the front end of stage clip is provided with a block that is fixed on the inner walls, and inner walls is provided with the slide rail that is positioned at the driving lever both sides and is located at the spacer in the driving lever outside.
4, safe electric saw according to claim 1, it is characterized in that described reduction box assembly comprises reduction box, is installed in a pair of intermeshing bevel gear in the reduction box front portion and is positioned at the helical gear at reduction box rear portion, described helical gear and one of them bevel gear realize rotating synchronously by a gear shaft, and saw blade is connected with another bevel gear by a turning cylinder; The head of motor output shaft places in the reduction box, and its head helical teeth cooperates with helical gear.
5, safe electric saw according to claim 1, it is characterized in that being provided with torsion spring between the bottom of housing and the movable shield, this movable shield is connected by a cage knob with the front end of housing, the front end of housing has one and is used for the arc chute that move the cage knob lower end, and the bottom of movable shield has one and is used for the through hole that saw blade passes in and out.
6, safe electric saw according to claim 5, the upper end that it is characterized in that movable shield forms a pedestal, a pressing plate is fixed at the top of pedestal, described cage knob comprises the button body of pin and sleeve on pedestal that runs through pedestal, pressing plate, form two on the outer wall of pin and be the projection that is symmetrically distributed and conflicts on pedestal, the button body is affixed by screw and pin, and a stage clip that is enclosed within on the pin is arranged between pressing plate and the projection, and the bottom of pin cooperates with chute.
7, according to claim 5 or 6 described safe electric saws, it is characterized in that described chute is built-in with an arc cutting-in adjusting slider movably, form a hollow mount pad on it, a nut is fixed in the bottom of this mount pad, cutting-in scale indicator collet is housed on the mount pad and runs through the height screw of indicator collet, the bottom of a high screw is connected with nut, have one to be positioned at mount pad and to be enclosed within stage clip on the screw between a nut and the high screw, the housing front end place that has chute is provided with many groove shape graduation marks, and many location convex tendons that are used with graduation mark are arranged at the bottom of indicator collet.
8, safe electric saw according to claim 1, a button spindle is equipped with on the top that it is characterized in that inner walls, the upper end of this button spindle forms and is exposed at the outer hat button of housing under the normality, one stage clip that is enclosed within button spindle is arranged between button and the inner walls, the lower end of button spindle forms a ramp, be provided with in the housing one with the pivoted arm of button spindle interlock, the lower inclined plane that the formation one of one end and the ramp of this pivoted arm is used, the other end connection one of pivoted arm and the lock shaft of its interlock, this lock shaft runs through the sidewall of housing, its outer end cooperates with a breach on the movable shield, innerly cooperates with a stage clip.
9, safe electric saw according to claim 8 is characterized in that described hat button is positioned at the front end of housing grip part, and tumbler shaft is connected on the sidewall of a pivoted arm bearing, and this pivoted arm bearing is fixed on the inner walls.
10, safe electric saw according to claim 1 is characterized in that being equipped with on the housing a perpendicular auxiliary lever, and this lever and saw blade are in the same side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201203978U CN201231349Y (en) | 2008-06-27 | 2008-06-27 | Safe electric saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201203978U CN201231349Y (en) | 2008-06-27 | 2008-06-27 | Safe electric saw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201231349Y true CN201231349Y (en) | 2009-05-06 |
Family
ID=40617724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201203978U Expired - Lifetime CN201231349Y (en) | 2008-06-27 | 2008-06-27 | Safe electric saw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201231349Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102310222A (en) * | 2011-09-06 | 2012-01-11 | 南京德朔实业有限公司 | Electric tool capable of safely replacing blade |
| CN102632280A (en) * | 2012-05-15 | 2012-08-15 | 庄永雷 | Hand-held cutting and milling machine |
| WO2013117159A1 (en) * | 2012-02-06 | 2013-08-15 | Chervon (Hk) Limited | Electric circular saw |
| CN105458398A (en) * | 2014-09-09 | 2016-04-06 | 苏州宝时得电动工具有限公司 | Portable circular saw |
| CN109702900A (en) * | 2019-03-01 | 2019-05-03 | 冀凯河北机电科技有限公司 | A kind of power head device for being applicable to cut ore |
| CN113580290A (en) * | 2021-07-30 | 2021-11-02 | 江苏东成工具科技有限公司 | Chain saw |
-
2008
- 2008-06-27 CN CNU2008201203978U patent/CN201231349Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102310222A (en) * | 2011-09-06 | 2012-01-11 | 南京德朔实业有限公司 | Electric tool capable of safely replacing blade |
| CN103394748B (en) * | 2011-09-06 | 2016-04-27 | 南京德朔实业有限公司 | Can the electric tool of safe allowing blade replacement |
| WO2013117159A1 (en) * | 2012-02-06 | 2013-08-15 | Chervon (Hk) Limited | Electric circular saw |
| CN102632280A (en) * | 2012-05-15 | 2012-08-15 | 庄永雷 | Hand-held cutting and milling machine |
| CN105458398A (en) * | 2014-09-09 | 2016-04-06 | 苏州宝时得电动工具有限公司 | Portable circular saw |
| CN109702900A (en) * | 2019-03-01 | 2019-05-03 | 冀凯河北机电科技有限公司 | A kind of power head device for being applicable to cut ore |
| CN113580290A (en) * | 2021-07-30 | 2021-11-02 | 江苏东成工具科技有限公司 | Chain saw |
| CN113580290B (en) * | 2021-07-30 | 2023-03-03 | 江苏东成工具科技有限公司 | Chain saw |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090506 |
|
| CX01 | Expiry of patent term |