CN111215694A - Safety device for electric saw - Google Patents
Safety device for electric saw Download PDFInfo
- Publication number
- CN111215694A CN111215694A CN201911028831.9A CN201911028831A CN111215694A CN 111215694 A CN111215694 A CN 111215694A CN 201911028831 A CN201911028831 A CN 201911028831A CN 111215694 A CN111215694 A CN 111215694A
- Authority
- CN
- China
- Prior art keywords
- electric saw
- unlocking button
- lock pin
- pressed
- main body
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D47/00—Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts
- B23D47/08—Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts of devices for bringing the circular saw blade to the workpiece or removing same therefrom
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D59/00—Accessories specially designed for sawing machines or sawing devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/08—Protective coverings for parts of machine tools; Splash guards
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sawing (AREA)
Abstract
The invention discloses a safety device of an electric saw, which comprises: the unlocking button is arranged on the electric saw main body in a penetrating mode; the electric saw comprises an electric saw body, a saw blade shield, a saw blade, a lock pin, a pushing boss, a pushing spring, a swinging rod, a stirring head and a saw blade shield, wherein the lock pin is arranged in the electric saw body, the inner wall of the electric saw body shell is provided with a mounting seat with a mounting hole, one end of the lock pin is inserted into the mounting hole, the middle part of the lock pin is provided with the pushing boss, the lock pin between the pushing boss and the mounting seat is sleeved with the pushing spring, two ends of the pushing spring are respectively abutted against the mounting seat and the pushing boss, the swinging rod is hinged in the electric saw body, the lower end of the swinging rod is provided with the stirring head; the unlocking button is provided with a pressing block for pressing the upper part of the swing rod and a pressing rod for pressing the lower part of the swing rod, and the pressing block and the pressing rod are respectively positioned at the left side and the right side of the swing rod. The electric saw safety device can prevent the electric saw body from being pressed down by mistake.
Description
Technical Field
The invention relates to the field of electric tools, in particular to a safety device for an electric saw.
Background
The electric saw is a kind of existing electric tool, and the structure of electric saw includes: the electric saw main part is with the work bottom plate that is used for pressing the sawed article, the saw bit is installed in the preceding lower part of electric saw main part, the rear end of work bottom plate is articulated mutually with the lower part of electric saw main part, the saw bit is located between work bottom plate and the electric saw main part, be provided with the saw bit guard shield that can enclose the fender to the saw bit in the front portion of work bottom plate, be provided with compression spring or torsional spring between work bottom plate and electric saw main part, under compression spring or torsional spring's effect, the electric saw main part can upwards swing to the saw bit is located the top of work bottom plate, the saw bit can not cut the object that the work bottom plate pressed this moment, during the electric saw cutting, the workman need overcome compression spring or torsional spring elasticity and press the electric saw main part downwards, make the saw bit can be taken the downswing by the electric saw main part and pass the work bottom plate, only pass. However, the main body of the existing electric saw is easy to be pressed by workers by mistake and swing downwards, so that the saw blade penetrates through the working bottom plate when the saw blade does not cut, and great potential safety hazards exist.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: it is intended to provide a saw device capable of preventing a saw body from being erroneously pressed to swing downward.
In order to solve the problems, the technical scheme adopted by the invention is as follows: electric saw safety device, its characterized in that: the method comprises the following steps: the unlocking mechanism comprises an unlocking button, a lock pin and a swing rod, wherein the unlocking button is arranged on the electric saw main body in a penetrating mode, the left end and the right end of the unlocking button respectively extend out of the left side and the right side of the electric saw main body, so that the unlocking button can be pressed from the left side and the right side of the electric saw main body, and a resetting mechanism capable of resetting the unlocking button after the unlocking button is pressed is arranged between the unlocking button and the electric saw main body; the lock pin is positioned below the unlocking button and is arranged in the electric saw main body in a left-right direction, the inner wall of the electric saw main body casing is provided with a mounting seat, a mounting hole is arranged on the mounting seat, one end of the lock pin is inserted into the mounting hole, the middle part of the lock pin is provided with a pushing boss, a pushing spring is sleeved on the lock pin between the pushing boss and the mounting seat, two ends of the pushing spring are respectively abutted against the mounting seat and the pushing boss, the oscillating rod can be hinged in the electric saw main body in a left-right swinging mode, a hinged point is positioned in the middle part of the oscillating rod, the oscillating rod is positioned between the lock pin and the unlocking button, the lower end of the oscillating rod is provided with a toggle head, the toggle head is inserted between the pushing boss and the electric saw main body casing, under the pushing of the pushing spring, the toggle head can be pressed by the pushing boss and abutted against the electric saw main body casing, and the other end of the lock pin can pass through the electric, the other end of the lock pin can abut against the saw blade shield to prevent the electric saw body from swinging downwards, so that the saw blade is prevented from passing through the working bottom plate downwards; the unlocking button is provided with a pressing block used for pressing the upper part of the oscillating rod and a pressing rod used for pressing the lower part of the oscillating rod, the pressing block and the pressing rod are respectively positioned at the left side and the right side of the oscillating rod, when the unlocking button is pressed to move leftwards or rightwards, one of the pressing block and the pressing rod can always press the corresponding part of the oscillating rod, so that the oscillating rod swings, the poking head can poke the lock pin to move towards the direction of compressing the pushing spring through the pushing boss until the end part of the lock pin can leave the upper part of the saw blade shield and cannot prevent the electric saw main body from swinging downwards.
Further, the safety device of electric saw, wherein: the middle part of the unlocking button is provided with a spring groove, a reset spring is placed in the spring groove, two ends of the reset spring are respectively abutted against the left end and the right end of the spring groove, one part of the reset spring is exposed out of the spring groove, when the unlocking button is pressed leftwards or rightwards, one end of the reset spring in the same direction as the moving direction can be abutted against the inner side of the shell of the electric saw main body, so that the reset spring can be pressed by the moving unlocking button, and the pressed reset spring can drive the unlocking button to reset after the unlocking button is not pressed.
Further, the safety device of electric saw, wherein: the unlocking button is also provided with an upper corrugated plate, the upper corrugated plate is positioned above the electric saw switch button, the electric saw switch button is provided with an avoidance groove for avoiding the upper corrugated plate when the switch button is pressed upwards to start the electric saw, the avoidance groove is internally provided with a lower corrugated plate, when the unlocking button is not pressed, the upper corrugated plate is positioned above the lower corrugated plate to prevent the lower corrugated plate from moving upwards, and at the moment, the switch button can not be pressed upwards due to the blockage of the upper corrugated plate to the lower corrugated plate, so that the electric saw cannot be started; when the unlocking button is pressed to enable the end part of the lock pin to leave the upper part of the saw blade shield, the upper corrugated plate can leave the upper part of the lower corrugated plate without blocking the upward movement of the lower corrugated plate, so that the switch button can be pressed upwards.
Further, the safety device of electric saw, wherein: and two ends of the spring groove are respectively provided with a positioning column which is used for being inserted into the return spring to position the end part of the return spring.
Further, the safety device of electric saw, wherein: the poking head is provided with a clamping groove, and when the poking head is inserted between the pushing boss and the electric saw main body casing, the lock pin is clamped into the clamping groove.
Further, the safety device of electric saw, wherein: a cross rod used for pressing the lower part of the swing rod is arranged at the lower end of the pressing rod.
The invention has the advantages that: the electric saw safety device can ensure that the electric saw main body can be pressed to swing downwards only under the condition that a worker specially presses the unlocking button, thereby avoiding the condition that the electric saw main body is pressed to swing downwards by mistake and greatly improving the safety of the electric saw. In addition, the electric saw safety device can enable the electric saw to be started only under the condition that the electric saw body is unlocked, so that the safety of the electric saw is further improved.
Drawings
Fig. 1 is a schematic perspective view of a safety device of an electric saw according to the present invention.
Fig. 2 is a schematic perspective view of another perspective view of the safety device of the electric saw of the present invention.
Fig. 3 is a schematic view of the locking pin and the mounting structure of the main body case of the electric saw according to the present invention.
Fig. 4 is a schematic structural view of the unlock button shown in fig. 1.
Fig. 5 is a schematic structural view of the swing lever shown in fig. 1.
Detailed Description
The present invention will be described in further detail below with reference to specific embodiments and the attached drawings.
In order to better show the structure of the safety device of the electric saw, a part of the housing of the main body 9 of the electric saw is not shown in fig. 1 and 2.
As shown in fig. 1, 2, 3, 4, and 5, the safety device for a power saw includes: the electric saw comprises an unlocking button 1, a lock pin 2 and a swing rod 3, wherein the unlocking button 1 is arranged on an electric saw main body 9 in a penetrating mode, and the left end and the right end of the unlocking button 1 respectively extend out of the left side and the right side of the electric saw main body 9, so that the unlocking button 1 can be pressed from the left side and the right side of the electric saw main body 9, and the unlocking button 1 can be conveniently pressed by a left-handed person and a right-handed person; a reset mechanism which can reset the unlocking button 1 after the pressing is finished is arranged between the unlocking button 1 and the electric saw body 9; the lock pin 2 is positioned below the unlocking button 1, the lock pin 2 is installed in the electric saw main body 9 in a left-right direction, an installation seat 4 is arranged on the inner wall of a machine shell of the electric saw main body 9, an installation hole 41 is arranged on the installation seat 4, one end of the lock pin 2 is inserted into the installation hole 41, a pushing boss 21 is arranged on the middle part of the lock pin 2, a pushing spring 22 is sleeved on the lock pin 2 between the pushing boss 21 and the installation seat 4, two ends of the pushing spring 22 are respectively abutted against the installation seat 4 and the pushing boss 21, the oscillating rod 3 can be hinged in the electric saw main body 9 in a left-right swinging mode, a hinge joint is positioned in the middle part of the oscillating rod 3, the oscillating rod 3 is positioned between the lock pin 2 and the unlocking button 1, a toggle head 31 is arranged at the lower end of the oscillating rod 3, the toggle head 31 is inserted between the pushing boss 21 and the machine shell of the electric saw main body, the toggle head 31 is pressed by the pushing boss 21 to abut against the casing of the electric saw main body 9, and the other end of the lock pin 2 can pass through the casing of the electric saw main body 9 and move to the upper part of the saw blade shield 92, so that the other end of the lock pin 2 can abut against the saw blade shield 92 to prevent the electric saw main body 9 from swinging downwards, and therefore the saw blade 93 is prevented from passing downwards through the working bottom plate 91; the unlocking button 1 is provided with a pressing block 11 for pressing the upper part of the swing rod 3 and a pressing rod 12 for pressing the lower part of the swing rod 3, the pressing block 11 and the pressing rod 12 are respectively positioned at the left side and the right side of the swing rod 3, when the unlocking button 1 is pressed to move leftwards, the pressing block 11 can press the upper part of the swing rod 3 leftwards, so that the swing rod 3 swings, the toggle head 31 can toggle the lock pin 2 to move towards the direction of compressing the jacking spring 22 through the jacking boss 21 until the end part of the lock pin 2 can leave the upper part of the saw blade shield 92 and cannot prevent the electric saw main body 9 from swinging downwards; when the unlocking button 1 is pressed to move rightwards, the pressing rod 12 can press the lower part of the swing rod 3 rightwards, so that the swing rod 3 swings, and the toggle head 31 can toggle the lock pin 2 to move towards the direction of compressing the pushing spring 22 through the pushing boss 21 until the end part of the lock pin 2 can leave the upper part of the saw blade shield 92 and cannot prevent the electric saw main body 9 from swinging downwards.
The electric saw safety device can ensure that the electric saw main body 9 can be pressed to swing downwards only under the condition that a worker specially presses the unlocking button 1, thereby avoiding the condition that the electric saw main body 9 is pressed by mistake to swing downwards and greatly improving the safety of the electric saw.
As shown in fig. 1 and 4, the reset mechanism has the following structure: a spring groove 13 is arranged in the middle of the unlocking button 1, a return spring 14 is arranged in the spring groove 13, two ends of the return spring 14 are respectively abutted against the left end and the right end of the spring groove 13, and a part of the return spring 14 is exposed out of the spring groove 13, so that when the unlocking button 1 is pressed leftwards or rightwards, one end of the return spring 14 in the same direction as the moving direction can be abutted against the inner side of the shell of the electric saw main body 9, the return spring 14 can be pressed by the moving unlocking button 1, and the pressed return spring 14 can drive the unlocking button 1 to reset after the unlocking button 1 is not pressed.
As shown in fig. 2, an upper corrugated plate 15 is further arranged on the unlocking button 1, the upper corrugated plate 15 is located above the electric saw switch button 5, an avoiding groove 51 for avoiding the upper corrugated plate 15 when the switch button 5 is pressed upwards to start the electric saw is arranged on the electric saw switch button 5, a lower corrugated plate 52 is arranged in the avoiding groove 51, when the unlocking button 1 is not pressed, the upper corrugated plate 15 is located above the lower corrugated plate 52 and can block the lower corrugated plate 52 from moving upwards, and at the moment, the switch button 5 can not be pressed upwards due to the blocking of the upper corrugated plate 15 to the lower corrugated plate 52, so that the electric saw cannot be started; when the unlocking button 1 is pressed to make the end of the locking pin 2 leave the upper side of the blade guard 92, the upper corrugated sheet 15 leaves the upper side of the lower corrugated sheet 52 without blocking the upward movement of the lower corrugated sheet 52, so that the switch button 5 can be pressed upward. When the electric saw main body 9 is blocked and cannot swing downwards, the electric saw cannot be started, so that the saw blade cannot rotate, and the electric saw can be safer after the starting of the electric saw and the downward swing of the electric saw main body 9 are interlocked.
As shown in fig. 4, a positioning post 16 for inserting into the return spring 14 to position the end of the return spring 14 is provided at each end of the spring groove 13. The lower end of the pressing rod 12 is provided with a cross rod 17 used for pressing the lower part of the swing rod 3, and the pressing rod 12 and the swing rod 3 can be arranged in a staggered mode after the cross rod 17 is arranged, so that the electric saw can be more compact and reasonable in layout.
As shown in fig. 5, a locking groove 32 is formed in the toggle head 31, when the toggle head 31 is inserted between the pushing boss 21 and the casing of the electric saw main body 9, the lock pin 2 is locked into the locking groove 32, and the locking groove 32 enables the toggle head 31 to be installed more reliably.
Claims (6)
1. Electric saw safety device, its characterized in that: the method comprises the following steps: the unlocking mechanism comprises an unlocking button, a lock pin and a swing rod, wherein the unlocking button is arranged on the electric saw main body in a penetrating mode, the left end and the right end of the unlocking button respectively extend out of the left side and the right side of the electric saw main body, so that the unlocking button can be pressed from the left side and the right side of the electric saw main body, and a resetting mechanism capable of resetting the unlocking button after the unlocking button is pressed is arranged between the unlocking button and the electric saw main body; the lock pin is positioned below the unlocking button and is arranged in the electric saw main body in a left-right direction, the inner wall of the electric saw main body casing is provided with a mounting seat, a mounting hole is arranged on the mounting seat, one end of the lock pin is inserted into the mounting hole, the middle part of the lock pin is provided with a pushing boss, a pushing spring is sleeved on the lock pin between the pushing boss and the mounting seat, two ends of the pushing spring are respectively abutted against the mounting seat and the pushing boss, the oscillating rod can be hinged in the electric saw main body in a left-right swinging mode, a hinged point is positioned in the middle part of the oscillating rod, the oscillating rod is positioned between the lock pin and the unlocking button, the lower end of the oscillating rod is provided with a toggle head, the toggle head is inserted between the pushing boss and the electric saw main body casing, under the pushing of the pushing spring, the toggle head can be pressed by the pushing boss and abutted against the electric saw main body casing, and the other end of the lock pin can pass through the electric, the other end of the lock pin can abut against the saw blade shield to prevent the electric saw body from swinging downwards, so that the saw blade is prevented from passing through the working bottom plate downwards; the unlocking button is provided with a pressing block used for pressing the upper part of the oscillating rod and a pressing rod used for pressing the lower part of the oscillating rod, the pressing block and the pressing rod are respectively positioned at the left side and the right side of the oscillating rod, when the unlocking button is pressed to move leftwards or rightwards, one of the pressing block and the pressing rod can always press the corresponding part of the oscillating rod, so that the oscillating rod swings, the poking head can poke the lock pin to move towards the direction of compressing the pushing spring through the pushing boss until the end part of the lock pin can leave the upper part of the saw blade shield and cannot prevent the electric saw main body from swinging downwards.
2. The power saw safety device of claim 1, wherein: the reset mechanism has the structure that: the middle part of the unlocking button is provided with a spring groove, a reset spring is placed in the spring groove, two ends of the reset spring are respectively abutted against the left end and the right end of the spring groove, one part of the reset spring is exposed out of the spring groove, when the unlocking button is pressed leftwards or rightwards, one end of the reset spring in the same direction as the moving direction can be abutted against the inner side of the shell of the electric saw main body, so that the reset spring can be pressed by the moving unlocking button, and the pressed reset spring can drive the unlocking button to reset after the unlocking button is not pressed.
3. The power saw safety device of claim 2, wherein: the unlocking button is also provided with an upper corrugated plate, the upper corrugated plate is positioned above the electric saw switch button, the electric saw switch button is provided with an avoidance groove for avoiding the upper corrugated plate when the switch button is pressed upwards to start the electric saw, the avoidance groove is internally provided with a lower corrugated plate, when the unlocking button is not pressed, the upper corrugated plate is positioned above the lower corrugated plate to prevent the lower corrugated plate from moving upwards, and at the moment, the switch button can not be pressed upwards due to the blockage of the upper corrugated plate to the lower corrugated plate, so that the electric saw cannot be started; when the unlocking button is pressed to enable the end part of the lock pin to leave the upper part of the saw blade shield, the upper corrugated plate can leave the upper part of the lower corrugated plate without blocking the upward movement of the lower corrugated plate, so that the switch button can be pressed upwards.
4. A power saw safety device as defined in claim 2 or 3, wherein: and two ends of the spring groove are respectively provided with a positioning column which is used for being inserted into the return spring to position the end part of the return spring.
5. A power saw safety device as defined in claim 1, 2 or 3, wherein: the poking head is provided with a clamping groove, and when the poking head is inserted between the pushing boss and the electric saw main body casing, the lock pin is clamped into the clamping groove.
6. A power saw safety device as defined in claim 1, 2 or 3, wherein: a cross rod used for pressing the lower part of the swing rod is arranged at the lower end of the pressing rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911028831.9A CN111215694A (en) | 2019-10-28 | 2019-10-28 | Safety device for electric saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911028831.9A CN111215694A (en) | 2019-10-28 | 2019-10-28 | Safety device for electric saw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111215694A true CN111215694A (en) | 2020-06-02 |
Family
ID=70825763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911028831.9A Pending CN111215694A (en) | 2019-10-28 | 2019-10-28 | Safety device for electric saw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111215694A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011083859A (en) * | 2009-10-15 | 2011-04-28 | Ryobi Ltd | Cutter |
| CN203076698U (en) * | 2012-12-05 | 2013-07-24 | 正阳实业投资有限公司 | Handheld mini-saw |
| CN204525393U (en) * | 2014-01-31 | 2015-08-05 | 日立工机株式会社 | Portable cutter |
| CN104827342A (en) * | 2015-05-19 | 2015-08-12 | 正阳实业投资有限公司 | Handheld mini saw protective cover protection device |
| CN104874859A (en) * | 2014-02-28 | 2015-09-02 | 苏州宝时得电动工具有限公司 | Electric circular saw |
| CN205703493U (en) * | 2016-05-06 | 2016-11-23 | 江苏金鼎电器有限公司 | Handheld electric circular saw shield structure |
| CN206509587U (en) * | 2016-12-31 | 2017-09-22 | 苏州宝时得电动工具有限公司 | Hand-hold power tool |
| CN208866497U (en) * | 2018-08-23 | 2019-05-17 | 创科（澳门离岸商业服务）有限公司 | Cut-in type annular saw |
-
2019
- 2019-10-28 CN CN201911028831.9A patent/CN111215694A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011083859A (en) * | 2009-10-15 | 2011-04-28 | Ryobi Ltd | Cutter |
| CN203076698U (en) * | 2012-12-05 | 2013-07-24 | 正阳实业投资有限公司 | Handheld mini-saw |
| CN204525393U (en) * | 2014-01-31 | 2015-08-05 | 日立工机株式会社 | Portable cutter |
| CN104874859A (en) * | 2014-02-28 | 2015-09-02 | 苏州宝时得电动工具有限公司 | Electric circular saw |
| CN104827342A (en) * | 2015-05-19 | 2015-08-12 | 正阳实业投资有限公司 | Handheld mini saw protective cover protection device |
| CN205703493U (en) * | 2016-05-06 | 2016-11-23 | 江苏金鼎电器有限公司 | Handheld electric circular saw shield structure |
| CN206509587U (en) * | 2016-12-31 | 2017-09-22 | 苏州宝时得电动工具有限公司 | Hand-hold power tool |
| CN208866497U (en) * | 2018-08-23 | 2019-05-17 | 创科（澳门离岸商业服务）有限公司 | Cut-in type annular saw |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200602 |