CN104874859B - Electric circular saw - Google Patents
Electric circular saw Download PDFInfo
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- CN104874859B CN104874859B CN201410072787.2A CN201410072787A CN104874859B CN 104874859 B CN104874859 B CN 104874859B CN 201410072787 A CN201410072787 A CN 201410072787A CN 104874859 B CN104874859 B CN 104874859B
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- switch
- contact surface
- circular saw
- securing rod
- electric circular
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Abstract
Present invention is disclosed a kind of electric circular saw, including casing, motor, the driving switch for controlling motor and switch protection mechanism.Switch protection mechanism includes pivoting the securing rod that the switch trigger on casing is abutted against with switch trigger and the switch lever contacted with securing rod.When pressing switch trigger rotation, the securing rod movement abutted against with switch trigger, so that securing rod releases the locking to switch lever, now presses switch lever, and switch lever can be connected in driving switch and drive saw blade to operate.The conducting of motor needs the locking of first cancel switch bar to press switch lever again, so as to can avoid making saw blade damage human body due to unexpected triggering.Can control the break-make of motor, its prior art that compares the man-machine using effect of electric circular saw can also be improved while with safety protection function additionally, above-mentioned switch protection mechanism only needs to simple pressing twice.
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
Will not expose under state, human body would not also be damaged.But, prior art is entered using artificial fixed form to movable shield
Row is fixed, and either dismantles movable shield or installation activity shield is all very inconvenient.
Another safety approach, i.e., be in series with microswitch on the switch of electric circular saw, is used for controlling electric circular saw with this
The break-make of upper motor, so as to avoid making saw blade damage human body due to unexpected triggering.The fine motion that current industry is used
Switch needs repeatedly action or the multiple step can to run the break-make of motor in use, these cumbersome actions behaviour
The man-machine using effect that author brings is poor.
The content of the invention
Based on this, it is necessary to regarding to the issue above, there is provided one kind can improve man-machine using effect and with safeguard protection
The electric circular saw of function.
A kind of electric circular saw, including casing, be arranged on the motor of the casing internal, driven by the motor
Saw blade and the driving switch for controlling the motor；The electric circular saw also includes that the driving switch break-make can be controlled
Switch protection mechanism, the switch protection mechanism includes pivoting switch trigger and the switch trigger on the housing
The securing rod for abutting against, and by the switch lever for being used for pressing the driving switch of the locking rod lock；The switch lever can
Dynamic connection on the housing, is provided with the receiving space for housing the securing rod in the casing, the securing rod can
Mobile is arranged in the receiving space；When pressing the switch trigger movement, the switch spanner machine can drive the lock
Fixed pole is moved and releases the locking to the switch lever.
Wherein in one embodiment, the switch trigger is provided with the first contact surface, and the securing rod is provided with second
Contact surface and the 3rd contact surface, first contact surface is oblique with second contact surface to abut and can be in the switch trigger
Relative motion in the presence of pressing force, the switch lever is provided with fourth contact surface relative with the 3rd contact surface and can
It is connected to the 5th contact surface in the driving switch.
Wherein in one embodiment, first contact surface and/or second contact surface are inclined-plane or cam surface.
Wherein in one embodiment, the switch trigger is provided with the first projection, and first contact surface is formed at described
In first projection.
Wherein in one embodiment, there is the securing rod main part being housed in the receiving space, extension to set
The second raised and the 3rd projection on the main part is put, second contact surface is formed in second projection, described
3rd contact surface is formed in the 3rd projection.
Wherein in one embodiment, the switch lever is provided with the first dividing plate for extending to the securing rod, described to open
Close and be provided with first flexible member parallel with the main part between trigger and the dividing plate.
Wherein in one embodiment, the switch lever is provided with the first dividing plate, and the securing rod is provided with and described
The relative second partition of one dividing plate, first parallel with the main part is provided between first dividing plate and the second partition
Flexible member.
Wherein in one embodiment, the second flexible member, the switch are provided between the switch trigger and securing rod
The 3rd flexible member is provided between bar and securing rod.
Wherein in one embodiment, the switch lever is provided with the 4th raised, and the 4th contact surface is formed at described the
In four projections.
Wherein in one embodiment, one end of the switch lever and the casing are rotated and are connected, the switch lever it is another
One end is extended with support platform, and the 5th contact surface is formed in the support platform.
Above-mentioned electric circular saw includes controlling the switch protection mechanism of driving switch break-make, when pressing switch trigger rotation
When, the securing rod movement abutted against with switch trigger, and the space that switch lever can be made to be moved along driving switch direction is reserved, from
And securing rod is released the locking to switch lever, and switch lever is now pressed, switch lever can be connected in driving switch and drive saw
Piece is operated.The conducting of motor needs the locking of first cancel switch bar to press switch lever again, so as to can avoid being touched due to unexpected
Send out and saw blade is damaged human body.Additionally, above-mentioned switch protection mechanism only needs to simple pressing twice can to control to drive
The break-make of dynamic motor, its prior art that compares can also improve the man-machine of electric circular saw while with safety protection function to be made
Use effect.
Brief description of the drawings
Fig. 1 is electric circular saw main sectional view in a non-operative state；
Fig. 2 is the partial structurtes enlarged drawing at Figure 1A；
Fig. 3 be electric circular saw in working order under main sectional view；
Fig. 4 is the partial structurtes enlarged drawing at Fig. 3 B.
Wherein, specific element reference numeral is listed as follows：
100th, electric circular saw 110, casing 111, switch pin
120th, motor 130, saw blade 140, driving switch
150th, switch trigger 151, the first contact surface 152, first are raised
160th, securing rod 161, main part 162, the second contact surface
163rd, the 3rd contact surface 164, the second projection the 165, the 3rd are raised
166th, second partition 170, switch lever 171, the 4th contact surface
172nd, the 5th contact surface 173, the 4th projection 174, support platform
175th, the first dividing plate 181, the first flexible member 182, the second flexible member
183rd, the 3rd flexible member
Specific embodiment
（Explanation：" front " described in present embodiment refers to the direction towards saw blade, and described " rear " refers to and saw blade
Opposite direction.）
Please join Fig. 1, present embodiment discloses a kind of electric circular saw 100, the electric circular saw 100 includes casing 110, is arranged on machine
Motor 120 inside shell 110, the saw blade 130 driven by motor 120 and the drive for controlling motor 120
Dynamic switch 140, wherein, it is electrically connected between driving switch 140 and motor 120.During use, driving switch is pressed
140 and drive motor 120 to operate, and then drive saw blade 130 to rotate and carry out cutwork.
Please join Fig. 2, electric circular saw 100 also includes that the switch protection mechanism of the break-make of driving switch 140 can be controlled.Electric circular saw
100 have working condition and off working state：When electric circular saw 100 is in running order, pressed by external force is in switch protection machine
On structure and drive driving switch 140, driving switch 140 drives saw blade 130 to rotate；When electric circular saw 100 is in off working state,
The pressing active force to switching protection mechanism is removed, is now electrically connected between driving switch 140 and motor 120 and disconnected,
Saw blade 130 remains static.Wherein, switch protection mechanism include pivoting switch trigger 150 on casing 110 and
The securing rod 160 of the switch contact of trigger 150 and the switch lever 170 abutted against with securing rod 160.Driving switch 140 is provided with
The salient point 141 that can be contacted with switch lever 170.The receiving space for housing securing rod 160 is provided with inside casing 110, is locked
Bar 160 is movably disposed inside above-mentioned receiving space.In present embodiment, before securing rod 160 can be in the receiving space
After move.
Casing 110 is provided with switch pin 111, and one end of one end and switch lever 170 for switching trigger 150 is respectively relative to
Above-mentioned switch pin 111 is pivoted on casing 110.It is pointed out that in other embodiments, can also be in other manners
To realize switching the pivoting action of trigger 150 and switch lever 170 on casing 110, it is not specifically limited herein.
Switch trigger 150 is provided with the first contact surface 151, and securing rod 160 is provided with the second contact surface 162 and the 3rd and connects
Contacting surface 163, the first contact surface 151 is oblique with the second contact surface 162 to abut, and switch lever 170 is provided with and the phase of the 3rd contact surface 163
To the 4th contact surface 171 and the 5th contact surface 172 that can be connected in driving switch 140.
When electric circular saw 100 is in off working state, even if there is external force to order about the rotation of switch lever 170, due to the 4th contact
Face 171 is connected on the 3rd contact surface 163 under the revolving force effect of switch lever 170 such that it is able to hinder switch lever 170 to continue
Moved to the direction of driving switch 140.
Please join Fig. 3 and Fig. 4, when external force orders about switch trigger 150 to be rotated, the second contact surface 162 and the first contact surface 151
Between produce the relative motion, this motion securing rod 160 can be driven to move forward.At the same time, the 3rd contact surface 163 is relative
4th contact surface 171 is moved forward, and the space that can be moved along the direction of driving switch 140, locking are reserved to switch lever 170
Bar 160 releases the locking to switch lever 170.If pressing switch lever 170, switch lever 170 can be connected in driving switch 140, and
Saw blade 130 is driven to rotate.Now, electric circular saw 100 is in running order.
In order that the relative motion between switch trigger 150 and securing rod 160 is more smooth, the first contact surface 151 and the
Surface roughness of two contact surfaces 162 at mutual abutting is relatively low, and the first contact surface 151 and the second contact surface 162 can be with
It is the mutual inclined-plane for abutting, or cam surface.It is pointed out that in other embodiments, the first contact surface 151 with
The shape of the second contact surface 162 is not specifically limited, and can make between switch trigger 150 and securing rod 160 as long as disclosure satisfy that
Produce the function of relative motion.In present embodiment, the 3rd contact surface 163 and the 4th contact surface 171 are plane.
Please join Fig. 2 and Fig. 4, the switch trigger 150 in present embodiment is provided with the first projection 152, the first contact surface 151
It is formed in the first projection 152.Securing rod 160 has main part 161, the second projection 164 being extended on main part 161
And the 3rd projection 165, the second contact surface 162 is formed in the second projection 164, and it is raised that the 3rd contact surface 163 is formed at the 3rd
On 165.Switch lever 170 is provided with the 4th projection 173, and the 4th contact surface 171 is formed in the 4th projection 173.3rd projection 165
The smooth of the edge transition at edge and the 4th projection 173.So that switch lever 170 is in depressed effect, the 4th projection 173 exists
Interference will not be produced towards in the direction moving process of switch lever 170 with the 3rd raised 165.One end of switch lever 170 and casing
110 rotate connection, and its other end is extended with support platform 174, and the 5th contact surface 172 is formed in above-mentioned support platform 174.
Switch lever 170 is provided with the first dividing plate 175, and securing rod 160 is provided with the second partition relative with the first dividing plate 170
166, first flexible member 181 parallel with main part 161 is provided between the first dividing plate 175 and second partition 166.It may be noted that
, in other embodiments, through hole being also provided with securing rod 160, switch lever 170 is provided with and extends to above-mentioned through hole
First dividing plate 175 at place, first flexible member 181 parallel with main part 161 is provided between the side wall and dividing plate 175 of through hole.
In addition, be provided with the second flexible member 182 between switch trigger 150 and securing rod 160, switch lever 170 and securing rod 160 it
Between be provided with the 3rd flexible member 183.In present embodiment, the first flexible member 181, the second flexible member 182 and the 3rd bullet
Property element 183 be spring part.First flexible member 181, the second flexible member 182 and the 3rd flexible member 183 are able to ensure that
Switch trigger 150, securing rod 160 and switch lever 170 can be reset to respective original state in the state of external force releasing.
In use, be pushed against hand on switch trigger 150 first, and cause securing rod 160 by above-mentioned electric circular saw 100
Under direction movement from the rotary motion power of switch trigger 150 to saw blade 130 and switch lever 170 unlocked, now by compressing switch
Bar 170 simultaneously makes it be abutted with driving switch 140, and driving switch 140 is opened and drives the saw blade 130 to carry out cutwork.Now, open
Close trigger 150 to be resetted under the elastic restoring force of the second flexible member 182, Continued depression switch lever 170 can ensure saw
The persistent movement of piece 130.When saw blade 130 need to shut down, releasing is applied to the active force on switch lever 170, in the 3rd bullet
Property element 183 elastic restoring force under, switch lever 170 resets and releases itself and active force between driving switch 140,
Now, securing rod 160 resets under the elastic restoring force of the first flexible member 181, and then electric circular saw 100 is in non-work
Make state.
It may be noted that when, driving switch 140 employed in present embodiment produces power drives for Continued depression
Structure, in other embodiments, driving switch 140 is the power drives structure that single depression is generation, and it is with respect to switch lever
170 mode of operation is also slightly different.
Present embodiment is provided with switch protection mechanism in the driving switch of electric circular saw, so that when motor is turned on
The locking of first cancel switch bar is needed to press switch lever again, this structure can avoid making saw blade due to the unexpected triggering of electric circular saw
Human body is damaged.Additionally, above-mentioned switch protection mechanism only needs to simple pressing twice can control the logical of motor
Disconnected, its prior art that compares can also improve the man-machine using effect of electric circular saw while with safety protection function.
It is pointed out that the switch protection mechanism described in present embodiment not only goes for electric circular saw structure
In, and can be applicable to electric angle grinder etc. other cutting classes electric tool in, as long as can reach by twice
Simple pressing can improve man-machine using effect, but the effect with safety protection function this patent protection domain it
It is interior.
Embodiment described above only expresses several embodiments of the invention, and its description is 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 guarantor of the invention
Shield scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of electric circular saw, including casing, the motor for being arranged on the casing internal, the saw driven by the motor
Piece and the driving switch for controlling the motor；It is characterized in that：The electric circular saw also includes that the drive can be controlled
The switch protection mechanism of dynamic switch on and off, the switch protection mechanism includes pivoting switch trigger on the housing and institute
The securing rod that switch trigger is abutted against is stated, and by the switch lever for being used for pressing the driving switch of the locking rod lock；Institute
State switch lever to be movably attached on the casing, the receiving space for housing the securing rod is provided with the casing, it is described
What securing rod can be moved is arranged in the receiving space；When pressing the switch trigger movement, the switch spanner machine can
Drive the securing rod to move and release the locking to the switch lever.
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 the 3rd contact surface, and first contact surface is oblique with second contact surface to abut and energy
Enough relative motions in the presence of the switch trigger pressing force, the switch lever is provided with relative with the 3rd contact surface
4th contact surface and the 5th contact surface that can be connected in the driving switch.
3. electric circular saw according to claim 2, it is characterised in that first contact surface and/or second contact surface
It is inclined-plane or cam surface.
4. electric circular saw according to claim 2, it is characterised in that the switch trigger is provided with first raised, described first
Contact surface is formed in first projection.
5. the electric circular saw according to any one of claim 2 to 4, it is characterised in that the securing rod has and is housed in institute
State the main part in receiving space, second be extended on main part projection and the 3rd raised, second contact
Face is formed in second projection, and the 3rd contact surface is formed in the 3rd projection.
6. electric circular saw according to claim 5, it is characterised in that the switch lever is provided with and extends to the securing rod
First dividing plate, is provided with first flexible member parallel with the main part between the switch trigger and the dividing plate.
7. electric circular saw according to claim 5, it is characterised in that the switch lever is provided with the first dividing plate, the locking
Bar is provided with the second partition relative with first dividing plate, be provided between first dividing plate and the second partition with it is described
The first parallel flexible member of main part.
8. electric circular saw according to claim 2, it is characterised in that be provided with the second bullet between the switch trigger and securing rod
Property element, is provided with the 3rd flexible member between the switch lever and securing rod.
9. electric circular saw according to claim 2, it is characterised in that the switch lever is provided with the 4th raised, and the described 4th connects
Contacting surface is formed in the 4th projection.
10. electric circular saw according to claim 2, it is characterised in that one end of the switch lever and the casing are rotated and connected
Connect, the other end of the switch lever is extended with support platform, and the 5th contact surface is formed in the support platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410072787.2A CN104874859B (en) | 2014-02-28 | 2014-02-28 | Electric circular saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410072787.2A CN104874859B (en) | 2014-02-28 | 2014-02-28 | Electric circular saw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104874859A CN104874859A (en) | 2015-09-02 |
| CN104874859B true CN104874859B (en) | 2017-06-27 |
Family
ID=53942679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410072787.2A Active CN104874859B (en) | 2014-02-28 | 2014-02-28 | Electric circular saw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104874859B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106808017B (en) * | 2015-12-01 | 2019-07-30 | 苏州宝时得电动工具有限公司 | Electric circular saw and electric circular saw control method |
| CN107042334B (en) * | 2017-05-02 | 2019-04-12 | 宁波天和电动工具有限公司 | A kind of electric circular saw with switch protection mechanism |
| CN108115190B (en) * | 2017-05-31 | 2019-03-19 | 新疆北新路桥集团股份有限公司 | A kind of improved bridge to maintain equipment |
| CN111215694A (en) * | 2019-10-28 | 2020-06-02 | 张家港市创基机械设备制造有限公司 | Safety device for electric saw |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4589208A (en) * | 1983-08-13 | 1986-05-20 | Matsushita Electric Works, Ltd. | Portable electric circular saw |
| US5755147A (en) * | 1992-06-30 | 1998-05-26 | Tsune Seiki Co., Ltd. | Circular saw |
| CN2825224Y (en) * | 2005-08-25 | 2006-10-11 | 叶伟豪 | Handle structure with safety lock |
| CN201077064Y (en) * | 2007-09-04 | 2008-06-25 | 黄寅初 | Single-hand operable pneumatic tool safety switch device |
| CN201841530U (en) * | 2010-09-10 | 2011-05-25 | 鹏泽企业股份有限公司 | Safety trigger structure of power tool |
| CN202479602U (en) * | 2012-02-06 | 2012-10-10 | 南京德朔实业有限公司 | Electric circular saw with switch protecting mechanism |
| CN203397963U (en) * | 2013-07-23 | 2014-01-15 | 宁波卡伦特电器有限公司 | Switching device of angle grinder |
-
2014
- 2014-02-28 CN CN201410072787.2A patent/CN104874859B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4589208A (en) * | 1983-08-13 | 1986-05-20 | Matsushita Electric Works, Ltd. | Portable electric circular saw |
| US5755147A (en) * | 1992-06-30 | 1998-05-26 | Tsune Seiki Co., Ltd. | Circular saw |
| CN2825224Y (en) * | 2005-08-25 | 2006-10-11 | 叶伟豪 | Handle structure with safety lock |
| CN201077064Y (en) * | 2007-09-04 | 2008-06-25 | 黄寅初 | Single-hand operable pneumatic tool safety switch device |
| CN201841530U (en) * | 2010-09-10 | 2011-05-25 | 鹏泽企业股份有限公司 | Safety trigger structure of power tool |
| CN202479602U (en) * | 2012-02-06 | 2012-10-10 | 南京德朔实业有限公司 | Electric circular saw with switch protecting mechanism |
| CN203397963U (en) * | 2013-07-23 | 2014-01-15 | 宁波卡伦特电器有限公司 | Switching device of angle grinder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104874859A (en) | 2015-09-02 |
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