CN110614562A - Protection device for angle grinder - Google Patents
Protection device for angle grinder Download PDFInfo
- Publication number
- CN110614562A CN110614562A CN201810634771.4A CN201810634771A CN110614562A CN 110614562 A CN110614562 A CN 110614562A CN 201810634771 A CN201810634771 A CN 201810634771A CN 110614562 A CN110614562 A CN 110614562A
- Authority
- CN
- China
- Prior art keywords
- pull rod
- piece
- angle grinder
- shield
- protection device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 230000001681 protective effect Effects 0.000 claims description 8
- 239000000428 dust Substances 0.000 description 4
- 208000014674 injury Diseases 0.000 description 3
- 208000012260 Accidental injury Diseases 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
- B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
- B24B23/028—Angle tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
- B24B55/04—Protective covers for the grinding wheel
- B24B55/05—Protective covers for the grinding wheel specially designed for portable grinding machines
- B24B55/052—Protective covers for the grinding wheel specially designed for portable grinding machines with rotating tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
- B24B55/06—Dust extraction equipment on grinding or polishing machines
- B24B55/10—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided
- B24B55/102—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided with rotating tools
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention provides a protection device for an angle grinder, which comprises a handle, a first shield and a second shield, and further comprises a switch positioned on the handle, a pull rod seat coaxial with the handle and positioned between the switch and the first shield, a pull rod positioned in the pull rod seat and a locking mechanism, wherein one end of the pull rod is connected with the switch, the other end of the pull rod is connected with the locking mechanism, and the locking mechanism is arranged on the first shield and is controlled by the operation of the switch, so that the second shield can be limited to be switched between at least two positions. The protection device for the angle grinder improves the safety coefficient of the angle grinder, prolongs the service life of the angle grinder, enlarges the application range of the angle grinder and meets the requirements of users on different occasions.
Description
Technical Field
The invention relates to an accidental protection device in a working process, in particular to a protection device for an angle grinder.
Background
An angle grinder, also called an angle grinder or a disc grinder, is an abrasive tool used for cutting and grinding. The electric angle grinder is a machine for grinding, cutting, removing rust, and polishing metal members using a high-speed rotating sheet wheel, a rubber wheel, a wire wheel, or the like. The angle grinder is very convenient to use, and can be used for processing workpieces by hand-held multi-angle grinding, cutting, derusting, polishing and the like. However, the hand-held machining operation is prone to accidental situations such as foreign matter entanglement, unstable hand-held tools, and falling or breakage of saw blades, which cause accidental injury accidents.
Because the angle grinder can be applied to different occasions and can be used for meeting different user requirements, the requirements of users on the protection device are diversified. The product that discloses at present is comparatively single, and the user can not purchase the angle mill that satisfies different demands respectively of many money when having different work demands because can produce higher capital investment like this, and can bring huge investment for storage and later stage's maintenance etc..
Disclosure of Invention
The invention aims to provide a multipurpose protection device for an angle grinder, which has high safety coefficient.
In order to achieve the above object, according to one aspect of the present invention, there is provided a protection device for an angle grinder, comprising: a handle located on one side of the angle grinder; the first protective cover is fixedly connected with the handle; the second shield is connected with the first shield in a relatively rotatable manner; a switch located on the handle; a pull rod seat coaxial with the handle and located between the switch and the first shield; the pull rod is positioned in the pull rod seat, one end of the pull rod is connected with the switch, and the other end of the pull rod is connected with the locking mechanism; a locking mechanism disposed on the first shield and controlled by the switch operation to restrict the second shield from being switchable between a first position and a second position.
Furthermore, the locking mechanism comprises a control piece, a locking piece and a support piece, wherein the control piece is used for connecting the locking piece and the pull rod, the locking piece is L-shaped, the middle part of the locking piece is rotatably fixed on the support piece, and the other end of the locking piece, which is opposite to the pull rod, is matched and connected with the second shield.
Furthermore, the locking mechanism further comprises an elastic piece, and the elastic piece is positioned below one end where the locking piece and the control piece are connected and used for supporting the locking piece.
Further, the locking mechanism further comprises an outer sleeve, and the connecting part of the locking member and the control member and the elastic member can be accommodated in the outer sleeve.
Furthermore, a rotating shaft is arranged on the supporting piece, and the locking piece is rotatably fixed on the rotating shaft.
Furthermore, a concave part and a through groove are arranged on the pull rod seat and at the matching part of the pull rod seat and the pull rod, and the concave part and the through groove are vertically arranged.
Furthermore, a switching piece coaxial with the pull rod is arranged on the pull rod, two convex parts protruding outwards are arranged on the switching piece along the radial direction, the two convex parts are arranged on an axis extension line, and the switching piece can rotate relative to the pull rod.
Furthermore, the switching piece and the pull rod seat form a first position and a second position through rotation, wherein a convex part of the switching piece is matched and connected with the through groove of the pull rod seat to form the first position, and a convex part of the switching piece is matched and connected with a concave part of the pull rod seat to form the second position.
Furthermore, the end part of the second protective cover is provided with a limiting groove at a position close to the end part, and the limiting groove is matched and connected with the locking piece to limit the rotation of the second protective cover.
Furthermore, the second shield is provided with a rack on the excircle far away from the end part, and the rack is matched and connected with the locking piece to limit the rotation of the second shield.
After the technical scheme is adopted, the invention has the following advantages:
1. when opening protection device, drive the pull rod motion through operating switch, drive the locking piece swing among the locking mechanical system, along with the rotation of second guard shield, the limiting groove (or the rack) that final locking piece passes through the second guard shield fixes the second guard shield in the position of opening, when meetting emergency and unclamping both hands, the switch loosens, the locking piece returns to initial position and unclamps the spacing to the second guard shield promptly, make the second guard shield kick-back to the closed position, protect the blade of angle grinder, reduce the unexpected injury because of unexpected the taking off hand produces, the factor of safety of angle grinder work has been improved.
2. The elastic piece is arranged below one end, connected with the pull rod, of the locking piece, and the locking piece cannot further rotate towards the second shield after the hand is accidentally loosened due to resistance of the elastic piece, so that the locking piece can be stably kept at a tangent position along the second shield, and the stability of the protection device is improved.
3. The connecting portion of locking piece and pull rod in locking mechanical system sets up the overcoat with the outside of elastic component, can completely cut off the dust that the angle mill produced because of work effectively, reduces dust etc. in the outside operational environment effectively, and the entering that reduces the pollution can prolong the life of angle mill, more can improve the stability of protection device security performance.
4. The position of the concave part and the through groove corresponding to the pull rod seat on the pull rod is provided with the switching piece capable of rotating relatively, the pull rod seat limits the movement of the switching piece along the axial direction through rotating the switching piece, and then a user can select whether to start the protection device according to different occasions, if the angle grinder is fixed on a workbench and continuously cuts, the protection device can be selected to be closed through the switching piece if the second shield is required to be opened all the time. The application range of the angle grinder is expanded, and the requirements of users on different occasions are met.
5. Through set up circular-arc rack on the excircle at this second guard shield for arbitrary angle can be opened to the second guard shield and fixed by locking piece at arbitrary angle, has enlarged the application scope of angle mill, has satisfied the demand of the different occasions of user.
Drawings
The invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is an enlarged view of a portion a in fig. 1.
Fig. 3 is a sectional view taken along line B-B in fig. 1.
Fig. 4 is a first position partial cross-sectional view of a second shield in accordance with an embodiment of the present invention.
Fig. 5 is a second position partial cross-sectional view of a second shield according to an embodiment of the present invention.
The names of the components marked in the figures are as follows:
1. a handle; 2. a switch; 3. a first shield; 31. a through hole; 4. a second shield; 41. a limiting groove; 42. a rack; 43. an end portion; 5. a locking mechanism; 6. a pull rod seat; 61. a recessed portion; 62. a through groove; 7. a pull rod; 71. a switching member; 8. a tube; 9. a jacket; 10. a control member; 11. a support member; 12. a rotating shaft; 13. a locking member; 14. an elastic member.
Detailed Description
A protective device for an angle grinder according to an embodiment of the present invention, as shown in fig. 1 to 5, includes a handle 1, a first shield 3, and a second shield 4. The handle 1 is positioned on the handle 1 on one side of the angle grinder, so that a user can control the angle grinder more conveniently and more stably when operating the angle grinder. The handle 1 is arranged vertically and relatively fixed with the first shield 3. The second shield 4 is coaxially arranged with the first shield and can rotate relative to the second shield 4 along the axis, an end 43 far away from the first shield 3 is arranged on the second shield 4, a limiting groove 41 is arranged near the end 43, and a rack 41 is arranged on the end 43 far away along the circumferential direction of the second shield close to the first shield.
The handle 1 is provided with a switch 2, and the switch 2 is used for opening or closing the protection device. The handle 1 is connected with the first shield 3 by a pull rod seat 6 and a pull rod 7. The pull rod seat 6 is coaxial with the handle 1 and is located between the switch 2 and the first shield 3, the pull rod 7 is located in the pull rod seat 6, and one end of the pull rod seat is connected with the switch 3 while the other end is connected with the locking mechanism 5. The pull rod seat 6 provided by the present embodiment is provided with a recessed portion 61 and a through groove 62 at a matching portion with the pull rod 7, and the recessed portion 61 is perpendicular to the through groove 62. The pull rod 7 is provided with a switching member 71 coaxial with the pull rod 7, and the switching member 7 is rotatable relative to the pull rod 7. The switching member 71 is provided with two protrusions protruding outward in the radial direction, the two protrusions being on an axis extension. Therefore, in the process of rotating the switching piece 71, the switching piece 71 and the pull rod form a first position where the convex part of the switching piece is matched and connected with the through groove of the pull rod seat and a second position where the convex part of the switching piece is matched and connected with the concave part of the pull rod seat.
The locking mechanism 5 for locking the second shield is fixedly provided on the first shield 3, and includes a control member 10, a locking member 13, and a support member 11. The control member 10 is used for connecting the locking member 13 and the pull rod 7, the control member of the embodiment preferentially adopts a tension spring, and the tension spring has elasticity, so that the pull rod is stretched after the switch 2 is opened, and the control member 10 fixedly connected with the tension spring can be quickly reset under the action of the elastic restoring force of the tension spring after the switch 2 is closed. Therefore, the present invention is intended to cover all equivalent substitutions, modifications and the like of the present embodiment.
The locking member 13 is L-shaped, the middle part of the locking member 13 is rotatably fixed on the rotating shaft 12 of the supporting member 11, one end of the locking member 13 is connected with the control member 10, and the other end of the locking member 13 passes through the through hole 31 of the first shield 3 to be matched and connected with the limiting groove 41 or the rack 42 of the second shield 4, so that the second shield can be fixed at any position.
The present embodiment provides a locking mechanism further comprising an elastic member 14 and an outer sleeve 9. Wherein, the elastic member 14 is located below the end of the locking member 13 connected with the control member 10, and is used for supporting the locking member 13 when the locking member 13 is restored to the original position when the switch 2 is closed, and limiting the locking member 13 from further moving towards the second shield 4, so that the locking member 13 can be stably kept at the tangential position along the second shield 4, and the stability of the protection device is improved. The outer sleeve 9 can accommodate the connecting parts of the locking piece 13 and the control piece 10 and the elastic piece 14 in the outer sleeve, so that dust generated by the angle grinder due to work can be effectively blocked, dust and the like in the external working environment can be effectively reduced, pollution entering is reduced, the service life of the angle grinder can be prolonged, and the stability of the safety performance of the protection device can be improved.
In the course of the work, through rotatory switching piece to the logical groove of pull rod seat in, protection device has been opened promptly, open switch pulling control piece, and then drive the locking piece rotatory until closely cooperating with the second guard shield, the second guard shield is rotated manually, select the angle between the second guard shield that needs to open and the first guard shield according to the demand, fix the second guard shield through rack or spacing groove, when taking place unexpected condition angle mill and taking place to take off the hand, the switch loses user's operation and resumes to the closed condition, the locking piece resumes to the initial position under the elastic force effect owing to losing the pulling force, release is spacing to the second guard shield, the second guard shield resumes to the closed condition.
According to the angle grinder protection device, when a user looses hands in an emergency, the second protective cover rebounds to the closed position to protect the blades of the angle grinder, so that accidental injury caused by accidental hand release is reduced, and the safety coefficient of the angle grinder is improved. The service life of the angle grinder is prolonged, the application range of the angle grinder is expanded, and the requirements of users on different occasions are met.
The disclosed embodiments are not limited to the embodiments shown herein. Any modification, equivalent replacement, improvement and the like made on the invention shall fall into the protection scope of the invention.
Claims (10)
1. A protection device for an angle grinder is characterized by comprising: a handle located on one side of the angle grinder; the first protective cover is fixedly connected with the handle; the second shield is connected with the first shield in a relatively rotatable manner; a switch located on the handle; a pull rod seat coaxial with the handle and located between the switch and the first shield; the pull rod is positioned in the pull rod seat, one end of the pull rod is connected with the switch, and the other end of the pull rod is connected with the locking mechanism; a locking mechanism disposed on the first shield and controlled by the switch operation to restrict the second shield from being switchable between at least two positions.
2. The protection device for an angle grinder of claim 1, wherein: the locking mechanism comprises a control piece, a locking piece and a support piece, wherein the control piece is used for connecting the locking piece and the pull rod, the locking piece is L-shaped, the middle part of the locking piece is rotatably fixed on the support piece, and the other end, opposite to the pull rod, of the locking piece is matched and connected with the second shield.
3. The protection device for an angle grinder of claim 2, wherein: the locking mechanism further comprises an elastic piece, wherein the elastic piece is located below one end, connected with the control piece, of the locking piece and is used for supporting the locking piece.
4. The protection device for an angle grinder of claim 3, wherein: the locking mechanism further comprises an outer sleeve, and the connecting part of the locking piece and the control piece and the elastic piece can be contained in the outer sleeve.
5. The protection device for an angle grinder of claim 4, wherein: the supporting piece is provided with a rotating shaft, and the locking piece is rotatably fixed on the rotating shaft.
6. The protection device for an angle grinder of claim 1, wherein: the pull rod seat is provided with a concave part and a through groove at the matching part of the pull rod seat and the pull rod, and the concave part and the through groove are vertically arranged.
7. The protection device for an angle grinder of claim 6, wherein: the switching piece is coaxial with the pull rod and is provided with two convex parts protruding outwards along the radial direction, the two convex parts are arranged on one axial line extension line, and the switching piece can rotate relative to the pull rod.
8. The protection device for an angle grinder of claim 7, wherein: the switching piece and the pull rod seat form a first position and a second position through rotation, wherein the convex part of the switching piece is matched and connected with the through groove of the pull rod seat to form the first position, and the convex part of the switching piece is matched and connected with the concave part of the pull rod seat to form the second position.
9. The protection device for an angle grinder of claim 8, wherein: the end part of the second protective cover is provided with a limiting groove at a position close to the end part, and the limiting groove is matched and connected with the locking piece to limit the rotation of the second protective cover.
10. The protection device for an angle grinder of claim 8, wherein: the second guard shield is kept away from be equipped with the rack on the excircle of tip, the rack with the locking piece cooperation is connected the restriction the rotation of second guard shield.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810634771.4A CN110614562A (en) | 2018-06-20 | 2018-06-20 | Protection device for angle grinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810634771.4A CN110614562A (en) | 2018-06-20 | 2018-06-20 | Protection device for angle grinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110614562A true CN110614562A (en) | 2019-12-27 |
Family
ID=68920950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810634771.4A Pending CN110614562A (en) | 2018-06-20 | 2018-06-20 | Protection device for angle grinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110614562A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111409000A (en) * | 2020-04-29 | 2020-07-14 | 南京机电职业技术学院 | Shield and angle grinder |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201128029Y (en) * | 2007-10-08 | 2008-10-08 | 南京搏峰电动工具有限公司 | Cutting saw with safety guard |
| US20140174272A1 (en) * | 2012-12-22 | 2014-06-26 | Robert Bosch Gmbh | Power Saw with Blade Guard Retraction Device |
| CN104369109A (en) * | 2014-12-10 | 2015-02-25 | 苏州市诚品精密机械有限公司 | Grinder grinding wheel protection cover |
| CN205057803U (en) * | 2015-07-14 | 2016-03-02 | 宿州学院 | Abrasive machine protection casing with adjustable |
| CN208614474U (en) * | 2018-06-20 | 2019-03-19 | 浙江皇冠电动工具制造有限公司 | A kind of angle grinder protective device |
-
2018
- 2018-06-20 CN CN201810634771.4A patent/CN110614562A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201128029Y (en) * | 2007-10-08 | 2008-10-08 | 南京搏峰电动工具有限公司 | Cutting saw with safety guard |
| US20140174272A1 (en) * | 2012-12-22 | 2014-06-26 | Robert Bosch Gmbh | Power Saw with Blade Guard Retraction Device |
| CN104369109A (en) * | 2014-12-10 | 2015-02-25 | 苏州市诚品精密机械有限公司 | Grinder grinding wheel protection cover |
| CN205057803U (en) * | 2015-07-14 | 2016-03-02 | 宿州学院 | Abrasive machine protection casing with adjustable |
| CN208614474U (en) * | 2018-06-20 | 2019-03-19 | 浙江皇冠电动工具制造有限公司 | A kind of angle grinder protective device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111409000A (en) * | 2020-04-29 | 2020-07-14 | 南京机电职业技术学院 | Shield and angle grinder |
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