CN107553415B - Electric tool protection casing adjusting device and dispose device's electric tool - Google Patents
Electric tool protection casing adjusting device and dispose device's electric tool Download PDFInfo
- Publication number
- CN107553415B CN107553415B CN201711009966.1A CN201711009966A CN107553415B CN 107553415 B CN107553415 B CN 107553415B CN 201711009966 A CN201711009966 A CN 201711009966A CN 107553415 B CN107553415 B CN 107553415B
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- ring gear
- cover
- electric tool
- lower ring
- adjusting device
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- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 abstract description 10
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
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- Drilling And Boring (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The application discloses an electric tool protection cover adjusting device and an electric tool provided with the same, wherein the electric tool protection cover adjusting device comprises a front cover and a cover body rotationally connected to the front cover, an upper gear ring is fixedly connected to the cover body, a lower gear ring capable of axially moving and a wave washer elastically clamped between the lower gear ring and the front cover are connected to the front cover, the lower gear ring and the upper gear ring are coaxially arranged, and a circle of mutually meshed clamping teeth are arranged on axially opposite sides of the lower gear ring and the upper gear ring respectively. Aiming at the problems, the protective cover has more adjusting angles while guaranteeing the use safety of the electric tool.
Description
Technical Field
The present application relates to a protective cover adjusting device for an electric tool and an electric tool provided with the same.
Background
The cover body of the electric tool protective cover is generally rotatably arranged on a front cover of the electric tool, a wrench with a clamping tongue and a return spring connected with the wrench are arranged on the cover body, and a plurality of clamping teeth are arranged on the front cover. Normally, the clamping tongue at the end part of the wrench is clamped into the clamping tooth under the action of the elastic force of the return spring, so that the cover body is prevented from rotating. When the angle of the cover body on the front cover needs to be adjusted, the clamping tongue at the end part of the wrench needs to be manually pressed to enable the clamping tongue at the end part of the wrench to move out of the clamping tooth, the wrench is loosened after the cover body rotates to a required angle, and the clamping tongue on the wrench is clamped into a new clamping tooth position again under the action of the return spring, so that the angle of the cover body is adjusted.
However, in view of the strength requirement, a certain wall thickness is required between the latches on the front cover, so that the number of the latches cannot be set too much, and the adjusting angle of the cover body is generally only 5 to 6. If too many adjusting angles are arranged, the partition wall thickness of the latch is reduced, and the safety is poor.
Disclosure of Invention
The application aims at: in view of the above, the present application provides a novel structure of a protective cover adjusting device for an electric tool and an electric tool equipped with the same, which aims to ensure safety and simultaneously enable the protective cover to have a plurality of adjusting angles.
The technical scheme of the application is as follows:
The utility model provides an electric tool protection casing adjusting device, includes the protecgulum and rotates connect in cover on the protecgulum, fixedly connected with goes up the ring gear on the cover, be connected with but axial displacement's lower ring gear and elasticity clamp locate down the ring gear with wave washer between the protecgulum, down the ring gear with go up the coaxial arrangement of ring gear, and both axial opposite sides all are equipped with round intermeshing's latch, works as go up the ring gear with down the ring gear rotates relatively, go up the ring gear and can produce axial roof pressure down the axial thrust of ring gear.
The application also provides a protective cover adjusting device for the electric tool, which comprises the following preferable schemes:
Further comprises:
A wrench which can be moved into/out of a space between the front cover and the lower ring gear by an external force, and
And a wrench return spring connected to the wrench and applying an elastic force to the wrench to move the wrench into a space between the front cover and the lower ring gear.
The upper gear ring and the cover body are fixed together through screws.
The wave washer is coaxially disposed with the lower ring gear.
The wave washer and the lower gear ring are connected to the front cover through the same set of screws.
An electric tool comprises the electric tool protective cover adjusting device with the structure.
The application has the following beneficial effects: the protective cover adjusting device for the electric tool enables the cover body to have more adjusting angles, and the angle adjusting operation is very simple and convenient.
Drawings
The application is further described with reference to the drawings and the specific embodiments below:
FIG. 1 is an exploded view of a power tool guard adjustment device in accordance with an embodiment of the present application;
Fig. 2 is a cross-sectional view of a power tool guard adjustment device in accordance with an embodiment of the present application.
Wherein: the novel electric tool comprises a front cover, a cover body, an upper gear ring, a lower gear ring, a 5-wrench, a 6-wrench return spring, a 7-electric tool body and a wave washer, wherein the front cover is arranged on the front cover, the cover body is arranged on the cover body, the upper gear ring is arranged on the cover body, the lower gear ring is arranged on the cover body, and the wave washer is arranged on the cover body.
Detailed Description
Fig. 1 and 2 show a specific embodiment of the present application for a protective cover adjusting device for a power tool, which, like a conventional protective cover adjusting device for a power tool, also includes a front cover 1 and a cover body 2 rotatably coupled to the front cover. Wherein the front cover 1 is fixedly mounted on the electric tool body 7.
The key improvement of the embodiment is that the upper gear ring 3 is locked and fixed on the cover body 2 through screws, and the lower gear ring 4 and the wave washer 8 are connected on the front cover 1 through two screws. The lower gear ring 4 can move in a small range relative to the front cover 1 in the axial direction, and the wave washer 8 is axially clamped between the lower gear ring 4 and the front cover 1 and has certain elastic energy storage. The lower ring gear 4 and the upper ring gear 3 are coaxially arranged, and the axially opposite sides of the lower ring gear 4 and the upper ring gear 3 are respectively provided with a circle of mutually meshed latch teeth, when the upper ring gear 3 and the lower ring gear 4 (around the axes of the upper ring gear and the lower ring gear) relatively rotate, the upper ring gear 3 can generate axial thrust for axially propping against the lower ring gear 4.
In a normal state, the lower gear ring 4 is engaged and clamped with the upper gear ring 3 due to the axial elastic force of the wave washer 8, so that the cover body 2 is stably at a corresponding angle position. When the angle of the cover body 2 needs to be adjusted, the cover body 2 is manually rotated by force, the torsion force is transmitted to the upper gear ring 3, so that downward axial thrust is applied to the lower gear ring 4 in fig. 2, the axial thrust is increased as long as the torsion force applied to the cover body 2 is large enough, the lower gear ring 4 is subjected to the axial thrust of the upper gear ring 3 and presses the wave washer 8 downwards in fig. 2, the wave washer 8 is axially deformed, the lower gear ring 4 moves downwards a certain distance away from the upper gear ring 3, the clamping teeth on the upper gear ring 3 and the lower gear ring 4 are separated from each other, the cover body 2 can smoothly rotate, and after the cover body 2 rotates to a required angle, the rotation of the cover body 2 is stopped, and the cover body 2 is firmly at a new angle position.
Considering the above-mentioned structural form of the adjusting device, there is such a problem: if the housing 2 is accidentally subjected to a large torsion force, an angular change occurs, which causes the housing 2 to be accidentally rotated, thereby reducing the safety of the power tool. In this regard, the present embodiment further improves the adjusting device as follows: a wrench 5 and a wrench return spring 6 connected to the wrench are specially provided, the wrench 5 can be moved into or out of the space between the front cover 1 and the lower ring gear 4 by an external force applied thereto, and the wrench return spring 6 applies an elastic force to the wrench 5 to move the wrench into the space between the front cover 1 and the lower ring gear 4.
In a normal state, the wrench 5 extends into the space between the front cover 1 and the lower gear ring 4 under the action of the elastic force of the wrench return spring 6, so that the wrench 5 can prevent the lower gear ring 4 from moving close to the front cover 1 by a large distance, the lower gear ring 4 can only axially move by a very small distance no matter how large torsion force is applied to the cover 2 by the outside, and the latches of the upper gear ring 3 and the lower gear ring 4 are always in a meshed state and cannot be separated, so that the cover 2 cannot rotate.
When the installation angle of the cover body 2 on the front cover 1 needs to be adjusted, the spanner 5 is manually pressed to enable the spanner to overcome the elasticity of the spanner return spring 6 and move out of the space between the front cover 1 and the lower gear ring 4, the spanner 5 loses the limiting effect on the axial displacement of the lower gear ring 4, and at the moment, a certain torsion force is applied to the cover body 2, so that the angle adjustment of the cover body 2 can be realized.
The wrench 5 is rotatably connected to a rotating shaft fixed to the electric tool body 7, and one end of the wrench return spring 6 abuts against the wrench 5, and the other end abuts against the electric tool body 7.
The foregoing embodiments are merely illustrative of the technical concept and features of the present application, and are not intended to limit the scope of the application. All equivalent changes or modifications made according to the spirit of the main technical proposal of the application should be covered in the protection scope of the application.
Claims (6)
1. The utility model provides an electric tool protection casing adjusting device, includes protecgulum (1) and rotate connect in cover body (2) on the protecgulum, its characterized in that, fixedly connected with goes up ring gear (3) on cover body (2), be connected with on protecgulum (1) but axial displacement's lower ring gear (4) and elasticity clamp locate lower ring gear with wave washer (8) between the protecgulum, lower ring gear (4) with go up ring gear (3) coaxial arrangement, and both axial opposite sides all are equipped with round intermeshing's latch, works as go up ring gear (3) with when lower ring gear (4) rotate relatively, go up ring gear (3) can produce axial roof pressure the axial thrust of lower ring gear (4).
2. The power tool guard adjustment device of claim 1, further comprising:
a wrench (5), the wrench (5) being capable of moving into/out of a space between the front cover (1) and the lower ring gear (4) by an external force, and
And a spanner return spring (6) which is connected to the spanner (5) and applies an elastic force to the spanner (5) to move the spanner (5) into a space between the front cover (1) and the lower ring gear (4).
3. The power tool protection cover adjusting device according to claim 1, wherein the upper gear ring (3) and the cover body (2) are fixed together by screws.
4. The power tool protection cover adjusting device according to claim 1, characterized in that the wave washer (8) is arranged coaxially with the lower ring gear (4).
5. The power tool protection cover adjusting device according to claim 1, characterized in that the wave washer (8) and the lower ring gear (4) are connected to the front cover (1) by the same set of screws.
6. A power tool comprising the power tool guard adjustment device of any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711009966.1A CN107553415B (en) | 2017-10-25 | 2017-10-25 | Electric tool protection casing adjusting device and dispose device's electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711009966.1A CN107553415B (en) | 2017-10-25 | 2017-10-25 | Electric tool protection casing adjusting device and dispose device's electric tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107553415A CN107553415A (en) | 2018-01-09 |
| CN107553415B true CN107553415B (en) | 2024-05-31 |
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ID=60987359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711009966.1A Active CN107553415B (en) | 2017-10-25 | 2017-10-25 | Electric tool protection casing adjusting device and dispose device's electric tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107553415B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI723507B (en) | 2019-08-22 | 2021-04-01 | 車王電子股份有限公司 | Protective device for electric tools |
| CN112440210B (en) * | 2019-08-28 | 2022-04-08 | 车王电子股份有限公司 | Protective device of electric tool |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009024427A1 (en) * | 2009-06-09 | 2010-12-16 | Metabowerke Gmbh | Protective casing for accommodating drive shaft of angle grinder, has adjusting ring rotatable in peripheral direction opposite to collar, so that ring is adjusted between engaging position and non-engaging position |
| CN201889718U (en) * | 2010-08-04 | 2011-07-06 | 上海锐奇工具股份有限公司 | Fixing device for protective cover |
| CN203109739U (en) * | 2013-01-29 | 2013-08-07 | 张爱明 | Multifunctional dust-free sander |
| CN203197745U (en) * | 2011-09-03 | 2013-09-18 | 浙江皇冠电动工具制造有限公司 | Integrated mechanism used for installing and changing grinding wheel and rotating protective cover for corner grinding type electric tool |
| CN207373102U (en) * | 2017-10-25 | 2018-05-18 | 锐奇控股股份有限公司 | A kind of electric tool protective cover regulating device and the electric tool for configuring the device |
-
2017
- 2017-10-25 CN CN201711009966.1A patent/CN107553415B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009024427A1 (en) * | 2009-06-09 | 2010-12-16 | Metabowerke Gmbh | Protective casing for accommodating drive shaft of angle grinder, has adjusting ring rotatable in peripheral direction opposite to collar, so that ring is adjusted between engaging position and non-engaging position |
| CN201889718U (en) * | 2010-08-04 | 2011-07-06 | 上海锐奇工具股份有限公司 | Fixing device for protective cover |
| CN203197745U (en) * | 2011-09-03 | 2013-09-18 | 浙江皇冠电动工具制造有限公司 | Integrated mechanism used for installing and changing grinding wheel and rotating protective cover for corner grinding type electric tool |
| CN203109739U (en) * | 2013-01-29 | 2013-08-07 | 张爱明 | Multifunctional dust-free sander |
| CN207373102U (en) * | 2017-10-25 | 2018-05-18 | 锐奇控股股份有限公司 | A kind of electric tool protective cover regulating device and the electric tool for configuring the device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107553415A (en) | 2018-01-09 |
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