CN104942362B - Electric circular saw - Google Patents
Electric circular saw Download PDFInfo
- Publication number
- CN104942362B CN104942362B CN201410112074.4A CN201410112074A CN104942362B CN 104942362 B CN104942362 B CN 104942362B CN 201410112074 A CN201410112074 A CN 201410112074A CN 104942362 B CN104942362 B CN 104942362B
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- Prior art keywords
- shield
- locking piece
- circular saw
- electric circular
- push rod
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Abstract
Present invention is disclosed a kind of electric circular saw, including casing, extend the output shaft of casing, the saw blade being arranged on output shaft and the shield for housing saw blade.Above-mentioned shield includes and casing is fixed determines shield and can pivot the dynamic shield on shield is determined, and dynamic shield is provided with can be with determining the locking piece of protective guard lock locking/unlocking.In addition, electric circular saw also includes the driving switch component that locking piece can be made to determine protective guard lock locking/unlocking relatively.When driving switch component is moved, driving switch component can make locking piece produce change in displacement, so that locking piece releases the locking to moving shield.Above-mentioned electric circular saw only need to simply drive（Such as acted by pressing）Driving switch component is that can control locking/released state of shield, and it compares for prior art, and the man-machine using effect of electric circular saw can also be improved while with to operating personnel's safety protection function.
Description
Technical field
The present invention relates to electric-powered field of tool, more particularly to a kind of electric circular saw.
Background technology
Electric circular saw can be damaged in the case where saw blade rotates at a high speed to human body, and in order to avoid the generation of injury, industry is proposed
The safety shield of mobilizable shield is provided with outside the saw blade of electric circular saw, this structure enables to saw blade in free shape
It will not expose under state, human body would not also be damaged.But, in the prior art using artificial fixed form to movable shield
It is fixed, needs repeatedly action or multiple steps can be so that shield is moved in use, these cumbersome actions
The man-machine using effect brought to operator is poor.
The content of the invention
Based on this, it is necessary in view of the above-mentioned problems, man-machine using effect can be improved and with safeguard protection by providing one kind
The electric circular saw of function.
A kind of electric circular saw, including casing, extend the output shaft of the casing, the saw blade being arranged on the output shaft and
Shield for housing the saw blade；The shield includes and the casing is fixed determines shield and can pivot in the fixed shield
Dynamic shield on cover, the dynamic shield is provided with and can also wrapped with the locking piece for determining protective guard lock locking/unlocking, the electric circular saw
The relatively described driving switch component for determining protective guard lock locking/unlocking of the locking piece can be made by including；Drive the driving switch component
When mobile, the driving switch component can make the locking piece produce change in displacement, and the locking piece is released to the fixed shield
The locking of cover.
In one of the embodiments, the driving switch component include pivoting switch trigger on the housing, with
Being provided with the switch trigger securing rod abutted against and the push rod being connected with the securing rod, the casing is used to house described
The receiving space of securing rod, what the securing rod can be moved is arranged in the receiving space, one end of the push rod and institute
State locking piece abutting；When pressing the switch trigger movement, the switch spanner machine can drive the securing rod to move through
The push rod makes the locking piece produce change in displacement.
In one of the embodiments, the switch trigger is provided with the first contact surface, and the securing rod is provided with second
Contact surface, first contact surface abuts against with second contact surface and can be in the presence of the switch trigger pressing force
Relative motion.
In one of the embodiments, first contact surface and/or second contact surface are inclined-plane or cam surface.
In one of the embodiments, the push rod includes push rod main part, and the push rod main part is provided with and the machine
Fulcrum, the first free end being connected with the securing rod and the second free end abutted with the locking piece that shell is fixed, it is described
First free end and second free end can be around the fulcrums.
In one of the embodiments, the fulcrum is located at one end of the push rod main part, and second free end is set
The other end in the push rod main part is put, first free end is located between the fulcrum and second free end.
In one of the embodiments, first free end is located at one end of the push rod main part, and described second certainly
Be arranged on the other end of the push rod main part by end, the fulcrum be located at first free end and second free end it
Between.
In one of the embodiments, the dynamic shield also includes dynamic boot main body portion and solid with the dynamic boot main body portion
Surely the pressing plate connected, the locking piece is pivoted in the dynamic boot main body portion.
In one of the embodiments, the dynamic shield also includes the torsion spring in the dynamic boot main body portion, described
Torsion spring has the torsion spring main part being fixed in the dynamic boot main body portion, extended by the torsion spring main part two ends first
End and the second end, the first end are abutted against with the dynamic boot main body portion, the second end and the locking piece
Abut against.
In one of the embodiments, the locking piece is the flexible piece of flexible deformation recovery capability.
Above-mentioned electric circular saw includes being used to house the shield of saw blade and can make the driving switch group of protective guard lock locking/unlocking
Part.Wherein, shield includes and casing is fixed determines shield and can pivot the dynamic shield on shield is determined, and moves shield and is provided with energy
Enough locking pieces with determining protective guard lock locking/unlocking.When driving switch component is moved, driving switch component can produce locking piece
Change in displacement, so that locking piece releases the locking to moving shield.Above-mentioned electric circular saw only needs simply driving (such as dynamic by pressing
Make) driving switch component is that can control locking/released state of shield, it compares for prior art, with to behaviour
The man-machine using effect of electric circular saw can also be improved while making personal security defencive function.
Brief description of the drawings
Fig. 1 is front view of the electric circular saw under guard mode；
Fig. 2 is the front view of electric circular saw in the operating condition；
Fig. 3 be electric circular saw shield in locking piece in off position under main sectional view；
Fig. 4 is the main sectional view of locking piece in the on state in electric circular saw shield；
Fig. 5 is the main sectional view of Electrotrephine case；
Fig. 6 is Fig. 5 partial structurtes enlarged drawing；
Fig. 7 is the sectional view at A-A in Fig. 1 electric circular saws the first embodiments；
Fig. 8 is the sectional view at A-A in second of embodiment of Fig. 1 electric circular saws.
Wherein, specific element reference numeral is listed as follows：
100th, electric circular saw 110, casing 111, receiving space
112nd, pivotal axis 120, output shaft 130, saw blade
140th, shield 141,241, determine shield 142,242, dynamic shield
1421st, boot main body portion 1422, pressing plate 1423, supports block are moved
143rd, 243, locking piece 144, torsion spring 1441, torsion spring main part
1442nd, first end 1443, the second end 150, driving switch component
151st, 251, switch trigger 1511, the first contact surface 152,252, securing rod
1521st, the second contact surface 153,253, push rod 1531,2531, push rod main part
1532nd, 2532, fulcrum the 1533,2533, first free end 1534,2,534 second free ends
254th, connecting rod 161, the first flexible member 162, the second flexible member
Embodiment
Explanation：" front " described in present embodiment refers to the direction towards saw blade, and described " rear " refers to and saw blade
Opposite direction.
It please join Fig. 1 to Fig. 4, present embodiment discloses a kind of electric circular saw 100, including casing 110, extend casing 110
Output shaft 120, the saw blade 130 being arranged on output shaft 120, the shield 140 for housing saw blade 130 and shield can be made
The driving switch component 150 of 140 lock locking/unlockings.Shield 140 includes and casing 110 is fixed determines shield 141 and can pivot
Determine the dynamic shield 142 on shield 141, dynamic shield 142 is provided with can be with determining the locking piece 143 that shield 141 is locked or unlocked.Drive
One end of dynamic switch module 150 is mutually abutted with locking piece 143.
In present embodiment, moving shield 142 also includes dynamic boot main body portion 1421, and locking piece 143 can be pivoted in dynamic shield
On cover main part 1421.During use, during pressing driving switch component 150, one end of locking piece 143 is in driving switch component
Change in displacement is produced under 150 abutting power effect, and shield 142 is determined shield 141 relatively and unlocks, now moves shield
142 determine the rotary folding of shield 141 relatively, and electric circular saw 100 is in running order, please join Fig. 2 and Fig. 4.When driving switch component 150
When recovering initial position, driving switch component 150 releases the abutting power to locking piece 143, and locking piece 143 returns to initial bit
Put, and shield 142 is determined shield 141 relatively and recover locking, now move shield 142 and determine the rotary expansion of shield 141, electricity circle relatively
Saw 100 is in guard mode, please join Fig. 1 and Fig. 3.Above-mentioned 100 need of electric circular saw simply press driving switch component 150 and i.e. can
Locking/released state of shield 140 is controlled, it compares for prior art, with to operating personnel's safety protection function
While can also improve the man-machine using effect of electric circular saw 100.It is pointed out that in other embodiments, driving is opened
Closing can also be spaced a distance between one end of component 150 and locking piece 143, as long as it disclosure satisfy that when pressing driving is opened
When closing component 150, driving switch component 150 can be pushed against on locking piece 143 and produce locking piece 143 can be by dynamic shield
The function of 142 unblocks.
In order to ensure when driving switch component 150 recovers initial position, locking piece 143 can also be returned to initially therewith
Position.Dynamic shield 142 also includes the torsion spring 144 in dynamic boot main body portion 1421.Torsion spring 144, which has, is fixed on dynamic shield master
Torsion spring main part 1441 in body portion 1421, the end of first end 1442 and second extended by the two ends of torsion spring main part 1441
Portion 1443.Dynamic boot main body portion 1421 is provided with a supports block 1423, and first end 1442 passes through above-mentioned supports block 1423 and dynamic shield
Main part 1421 is abutted against, and one end of the second end 1443 and locking piece 143 is abutted against.It is pointed out that in other implementations
In mode, locking piece 143 can also be the flexible piece of inherently flexible deformation recovery capability, as long as it disclosure satisfy that locking
The function that part 143 can reset after external force removal.
It please join Fig. 5 and Fig. 6, driving switch component 150 includes pivoting switch trigger 151 and switch spanner on casing 110
Securing rod 152 that machine 151 is abutted against and the push rod 153 being connected with securing rod 152.Being provided with casing is used to house securing rod 152
Receiving space 111, what securing rod 152 can be moved is arranged in receiving space 111, one end of push rod 153 and locking piece 143
Mutually abut.Casing 110 is provided with pivotal axis 112, and one end of switch trigger 151 is fixed on pivotal axis 112 and can be with pivot
Rotating shaft 112 moves pivotally for axle center.When pressing switch trigger 151 produces pivoting action, switch trigger 151 can drive locking
Bar 152, which moves through push rod 153, makes locking piece 143 produce change in displacement, and makes shield 142 determine shield 141 relatively to release
Locking.It is pointed out that in other embodiments, one end and the locking piece 143 of push rod 153 can also be spaced it is certain away from
From, as long as it disclosure satisfy that one end of push rod 153 can be pushed against on locking piece 143 and make lock when pressing switch trigger 151
Determine part 143 and produce the function that dynamic shield 142 can be unlocked.
It please join Fig. 6, switch trigger 151 is provided with the first contact surface 1511, and securing rod 152 is provided with the second contact surface
1521, the first contact surface 1511 abuts with the second contact surface 1521 and can be relative in the presence of the switch pressing force of trigger 151
Motion.When external force drives switch trigger 151 to rotate, relative fortune is produced between the second contact surface 1521 and the first contact surface 1511
Dynamic, this motion can drive securing rod 152 to move forward.In order that the relative fortune between switch trigger 151 and securing rod 152
Dynamic more smooth, in present embodiment, the first contact surface 1511 is with the second contact surface 1521 in the mutual rough surface for abutting place
Degree is relatively low, and the first contact surface 1511 and the second contact surface 1521 can be the inclined-plane mutually abutted, or cam surface.
It is pointed out that in other embodiments, the shape of the first contact surface 1511 and the second contact surface 1521 does not do specific limit
It is fixed, as long as disclosure satisfy that the function that can make that relative motion is produced between switch trigger 151 and securing rod 152.
It please join Fig. 7, the first flexible member 161 and the second elasticity are additionally provided between switch trigger 151 and securing rod 152
Element 162, the first flexible member 161 is consistent with the moving direction of securing rod 152, and the second flexible member 162 and switch trigger
151 pivotal orientation is consistent.When pressing switch trigger 151, the first contact surface 1511 with the second contact surface 1521 is oblique abuts,
Locking piece 143 is moved in the presence of above-mentioned abutting power.Now, the first flexible member 161 and the second flexible member 162 are located
In compressive state；After pressing force on cancel switch trigger 151, in the effect of the elastic restoring force of the second flexible member 162
Under, switch trigger 151 is resetted, at the same time, in the presence of the elastic restoring force of the first flexible member 161, and securing rod 152 is answered
Position.First flexible member 161 and the second flexible member 162 can be but be not limited to spring part.
It please join Fig. 7 and Fig. 8, Fig. 7 and Fig. 8 discloses securing rod 152,252, push rod 153,253 and locking piece 143,243
Between two kinds of different attachment structure schematic diagrams.Wherein, push rod 153,253 include push rod main part 1531,2531, push rod main body
The first free end that portion 1531,2531 is connected provided with the fulcrum 1532,2532 that can be fixed with casing, with securing rod 152,252
1533,2533 and the second free end 1534 for being abutted against with locking piece 143,243, the 2534, first free end 1533,2533 and the
Two free ends 1534,2534 can be around fulcrum.
Fig. 7 show the branch in the first attachment structure between securing rod 152, push rod 153 and locking piece 143, figure
Point 1532 is located at one end of push rod main part 1531, and the first free end 1533 is located at the middle part of push rod main part 1531, and second certainly
The other end of push rod main part 1531 is arranged on by end 1534.During use, during pressing switch trigger 151, securing rod 152 exists
The first free end 1533 is driven to move forward in the presence of switch trigger 151, now work of second free end 1534 in above-mentioned power
Move forward, be finally pushed against on locking piece 143 around fulcrum under, and shield 142 is determined shield 141 relatively and release lock
It is fixed.
Fig. 8 show the branch in second of attachment structure between securing rod 252, push rod 253 and locking piece 243, figure
Point 2532 is located at the middle part of push rod main part 2531, and the first free end 2533 is located at one end of push rod main part 2531, and second certainly
The other end of push rod main part 2531 is arranged on by end 2534.In present embodiment, also connect between securing rod 252 and push rod 253
It is connected to the connecting rod 254 for playing guide effect.During use, during pressing switch trigger 251, securing rod 252 is in switch spanner
Drive the first free end 2533 to move forward in the presence of machine 251, now the second free end 2534 under the above-mentioned force around
Fulcrum to be moved rearwards by, be finally pushed against on locking piece 143, and shield 242 is determined shield 241 relatively and unlock.
In addition, the pressing plate 1422 that shield 141 also includes being fixedly connected with dynamic boot main body portion 1421 is moved.Using
Cheng Zhong, after dynamic shield 142 determines shield 141 relatively to unlock, pressing plate 1422 is pressed against on workpiece to be processed by operating personnel,
Pressing plate 1422 can make shield 142 determine the rotary folding of shield 141, now, saw blade relatively in the presence of above-mentioned pressing force
It is exposed in 130 driven shields 142 and cutting operation can be carried out to workpiece, electric circular saw 100 is in the work shape shown in Fig. 2
State.When operating personnel release the effect to the pressing force of pressing plate 1422, pressing plate 1422 resets and makes the rotary expansion of shield 142
And saw blade 130 is housed in dynamic shield 142, now by releasing the pressing force to switching trigger 151, so as to make shield
Cover 142 determines shield 141 and recovers lock-out state relatively, and electric circular saw 100 is in the guard mode shown in Fig. 1.
Embodiment described above only expresses the several embodiments of the present invention, and it describes more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (9)
1. a kind of electric circular saw, including casing, extend the output shaft of the casing, the saw blade being arranged on the output shaft and use
In the shield for housing the saw blade；It is characterized in that：The shield includes and the casing is fixed determines shield and can pivot
In the dynamic shield determined on shield, the dynamic shield provided with can with the locking piece for determining protective guard lock locking/unlocking, it is described
Electric circular saw also includes that the relatively described driving switch component for determining protective guard lock locking/unlocking of the locking piece can be made；Driving is described to drive
During dynamic switch module movement, the driving switch component can make the locking piece produce change in displacement, and the locking piece is released
To the locking for determining shield, the driving switch component includes pivoting switch trigger and the switch on the housing
Being provided with securing rod that trigger is abutted against and the push rod being connected with the securing rod, the casing is used to house the securing rod
Receiving space, what the securing rod can be moved is arranged in the receiving space, one end of the push rod and the locking piece
Abut；When pressing the switch trigger movement, the switch spanner machine can drive the securing rod to move through the push rod
The locking piece is set to produce change in displacement.
2. electric circular saw according to claim 1, it is characterised in that the switch trigger is provided with the first contact surface, described
Securing rod is provided with the second contact surface, and first contact surface abuts against with second contact surface and can be in the switch spanner
Relative motion in the presence of machine pressing force.
3. electric circular saw according to claim 2, it is characterised in that first contact surface and/or second contact surface
For inclined-plane or cam surface.
4. electric circular saw according to claim 1, it is characterised in that the push rod includes push rod main part, the push rod master
Body portion is provided with the fulcrum fixed with the casing, the first free end being connected with the securing rod and abutted with the locking piece
Second free end, first free end and second free end can be around the fulcrums.
5. electric circular saw according to claim 4, it is characterised in that the fulcrum is located at one end of the push rod main part,
Second free end is arranged on the other end of the push rod main part, and first free end is located at the fulcrum and described the
Between two free ends.
6. electric circular saw according to claim 4, it is characterised in that first free end is located at the push rod main part
One end, second free end is arranged on the other end of the push rod main part, the fulcrum be located at first free end with
Between second free end.
7. electric circular saw according to claim 1, it is characterised in that the dynamic shield also include dynamic boot main body portion and with institute
The pressing plate that boot main body portion is fixedly connected is stated, the locking piece is pivoted in the dynamic boot main body portion.
8. electric circular saw according to claim 7, it is characterised in that the dynamic shield also includes being located at the dynamic boot main body
Torsion spring in portion, the torsion spring has the torsion spring main part being fixed in the dynamic boot main body portion, by the torsion spring main part
First end and the second end that two ends are extended, the first end are abutted against with the dynamic boot main body portion, and described second
End is abutted against with the locking piece.
9. electric circular saw according to claim 1, it is characterised in that the locking piece is flexible deformation recovery capability
Flexible piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410112074.4A CN104942362B (en) | 2014-03-24 | 2014-03-24 | Electric circular saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410112074.4A CN104942362B (en) | 2014-03-24 | 2014-03-24 | Electric circular saw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104942362A CN104942362A (en) | 2015-09-30 |
| CN104942362B true CN104942362B (en) | 2017-08-25 |
Family
ID=54157717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410112074.4A Active CN104942362B (en) | 2014-03-24 | 2014-03-24 | Electric circular saw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104942362B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017124462A (en) * | 2016-01-13 | 2017-07-20 | 株式会社マキタ | Cutting machine |
| CN107283368B (en) * | 2016-04-01 | 2021-09-07 | 苏州宝时得电动工具有限公司 | Hand-held tool and method for operating same |
| CN105904024B (en) * | 2016-06-20 | 2018-12-04 | 宁波市天铭工具有限公司 | Electric circular saw |
| CN105921811B (en) * | 2016-06-20 | 2018-08-24 | 宁波市天铭工具有限公司 | A kind of hand electric annular saw |
| CN105921812B (en) * | 2016-06-20 | 2018-12-04 | 宁波市天铭工具有限公司 | Hand electric annular saw |
| CN110508868A (en) * | 2019-07-31 | 2019-11-29 | 浙江开创电气股份有限公司 | Electric circular saw |
| CN113385318A (en) * | 2020-03-12 | 2021-09-14 | 苏州宝时得电动工具有限公司 | Spray gun and spray gun control method |
| GB2600961B (en) * | 2020-11-12 | 2023-05-03 | Evolution Power Tools Ltd | A handheld circular saw |
| TWI745199B (en) * | 2020-12-21 | 2021-11-01 | 力山工業股份有限公司 | Foldable miter saw with safety device |
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| CN201855998U (en) * | 2010-08-04 | 2011-06-08 | 上海锐奇工具股份有限公司 | Cutting saw with safety shield |
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| TW554813U (en) * | 2002-09-26 | 2003-09-21 | P & F Brother Ind Corp | Lifting structure for eye shielding cover of cutting machine |
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| US5537748A (en) * | 1991-07-09 | 1996-07-23 | Ryobi Limited | Cover structure for electric circular saw |
| CN2535174Y (en) * | 2002-01-31 | 2003-02-12 | 胡桂强 | Electric cutting machine |
| CN2631679Y (en) * | 2003-06-30 | 2004-08-11 | 苏州宝时得电动工具有限公司 | Movable cover rapid-opening mechanism of shearing saw |
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| Publication number | Publication date |
|---|---|
| CN104942362A (en) | 2015-09-30 |
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