CN220762114U - Hand-held angle grinder - Google Patents
Hand-held angle grinder Download PDFInfo
- Publication number
- CN220762114U CN220762114U CN202321748126.8U CN202321748126U CN220762114U CN 220762114 U CN220762114 U CN 220762114U CN 202321748126 U CN202321748126 U CN 202321748126U CN 220762114 U CN220762114 U CN 220762114U
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- China
- Prior art keywords
- angle grinder
- circuit board
- protective cover
- stator
- control switch
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- 230000001681 protective effect Effects 0.000 claims abstract description 30
- 238000009434 installation Methods 0.000 abstract description 8
- 238000003825 pressing Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 4
- 238000005498 polishing Methods 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 241001659652 Discus catskillensis Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 n Species 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
Landscapes
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The utility model discloses a handheld angle grinder, which comprises an angle grinder body, a stator, a rotor, a control device, a safety piece and a protective cover, wherein the stator is arranged on the angle grinder body; the stator is arranged in the front part of the body, and the rotor is arranged in the stator; the control device comprises a control switch, a circuit board and a cable, wherein the control switch and the circuit board are arranged in the rear part of the body, the cable penetrates through the rear part of the body to be connected with the circuit board, and the control switch is connected with the circuit board through a safety piece; the safety piece is respectively and electrically connected with the control switch and the circuit board; the protective cover is connected with the front part of the body and is abutted with the safety piece; the installation parts of the protection cover and the angle grinder head control the electric circuit by utilizing a mechanical click button structure, and the angle grinder can be normally started and used only when the power supply is switched on under the condition that the angle grinder protection cover is forcibly installed; the electric interlocking is realized through the mechanical pressing of the protective cover installation, the control circuit is connected, and the normal operation of other buttons is realized.
Description
Technical Field
The utility model relates to the technical field of angle grinders, in particular to a handheld angle grinder.
Background
The hand-held angle grinder is one of the most commonly used electric tools in construction; whether the installation is reasonable or not and whether the installation meets the safety requirement or not; whether the using method is correct or not and whether the using method accords with the safety operation rules or not are directly related to the personal safety of each worker, so that enough attention must be paid in actual use; according to 3.104.1 in the safety second part of GB/T3883.3-2007 hand-held power tools, the angle grinder is defined as: the rotating shaft is at right angle with the motor shaft, and the tool for polishing the peripheral surface and the end surface is also of the same type as a standard angular disc sander and an angular polisher;
according to incomplete statistics, ten reasons for accidents of the angle grinder in the operation process are as follows:
NO.1, removing the protective cover of the angle grinder;
the NO.2 cutting sheet and the angle grinding wheel sheet are used in a mixed mode;
no.3 using a wheel sheet that does not match the angle grinder and has a defective quality;
NO.4, mounting a non-angle grinder wheel piece for cutting operation;
NO.5 "reverse" pull cut;
6, cutting by an angle grinder;
cutting the NO.7 material overhead;
NO.8 single hand operation angle grinder;
NO.9, polishing the thin wall and the flexible material by using a grinding wheel abrasive disc;
NO.10, slotting and polishing included angle cracks by using a grinding wheel abrasive disc;
the angle grinder/hand-held grinder always stably houses the first name of the killer list of the electric tool, and the casualties caused by the fact that the protective cover is not installed are the first name of the accident of the angle grinder; there is a clear rule that the protection cover is installed in the angle grinder, but in actual use, the accident of injury caused by the angle grinder without the protection cover is still the highest in proportion, and serious personal injury and death is caused.
Disclosure of Invention
In view of this, the utility model provides a hand-held angle grinder, which can only start the main switch of the angle grinder to operate after the protective cover is installed in place, so as to ensure that the protective cover of the angle grinder can be forcibly installed in place, prevent the artificial random disassembly and avoid the use of the angle grinder without the protective cover, and essentially improve the safety standard of the angle grinder.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
a hand-held angle grinder comprises an angle grinder body, a stator, a rotor, a control device, a safety piece and a protective cover;
the angle grinder body comprises a body front part and a body rear part which are connected with each other;
the stator is arranged in the front part of the body, and the rotor is arranged in the stator;
the control device comprises a control switch, a circuit board and a cable, wherein the control switch and the circuit board are arranged in the rear part of the body, the cable penetrates through the rear part of the body to be connected with the circuit board, and the control switch is connected with the circuit board through the safety piece;
the safety piece is respectively and electrically connected with the control switch and the circuit board and is used for controlling the switch of the circuit;
the protective cover is connected with the front part of the body and is abutted with the safety piece.
Preferably, the safety element is a click normally open switch.
Preferably, the protective cover is fixed to the front end of the front portion of the body by a fastener.
Preferably, the fastener is a hoop, through holes are formed in two ends of the hoop, and two ends of the hoop are connected through the through holes in a threaded mode.
Preferably, the button of the safety piece is located between the anchor ear and the front portion of the body, and the anchor ear is connected with the front portion of the body and abuts against and presses down the button.
Preferably, the motor rotor further comprises a grinding wheel, and the grinding wheel is fixedly connected with the rotor.
Compared with the prior art, the utility model discloses a handheld angle grinder, which has the following beneficial effects:
1. the utility model designs a safety piece which is respectively and electrically connected with a control switch and a circuit board and is used for controlling the switch of a circuit; the installation parts of the protection cover and the angle grinder head utilize a mechanical click button structure to control an electric circuit, and the angle grinder can be normally started and used only when the power supply is switched on under the condition that the angle grinder protection cover is forcibly installed; the safety piece comprises a normally open switch button which is turned on, is arranged at the installation position of the connecting protective cover of the angle grinder head, and a secondary switch button which is connected to the control main line of the angle grinder; the electric interlocking is realized through the mechanical pressing of the protective cover installation, the control circuit is connected, and the normal operation of other buttons is realized.
2. The protection cover is fixed at the front end of the front part of the body through the anchor ear, and the protection cover can be better fixed through the anchor ear, so that the protection effect is good.
3. The rotor is provided with a rotating shaft protruding out of the stator, the protruding direction of the rotating shaft is arranged towards the front end of the front part of the body, and the grinding wheel is fixedly connected with the rotating shaft; the structure design is simple and reasonable, and the use and the replacement are convenient.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the overall structure of a hand-held angle grinder of the present utility model;
FIG. 2 is a schematic view of a safety member structure of a hand-held angle grinder according to the present utility model;
FIG. 3 is a schematic view of a protective cover structure of a hand-held angle grinder according to the present utility model;
FIG. 4 is a schematic diagram of a circuit diagram of a hand held angle grinder according to the present utility model;
wherein,
1. an angle grinder body; 2. a safety member; 3. a protective cover; 4. a front part of the body; 5. the rear part of the body; 6. a cable; 7. a fastener; 8. grinding wheel.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-4, an embodiment of the utility model discloses a hand-held angle grinder, which comprises an angle grinder body 1, a stator, a rotor, a control device, a safety piece 2 and a protective cover 3;
the angle mill body 1 comprises a body front part 4 and a body rear part 5 which are connected with each other;
the stator is arranged in the front part 4 of the body, and the rotor is arranged in the stator;
the control device comprises a control switch, a circuit board and a cable 6, wherein the control switch and the circuit board are arranged in the rear part 5 of the body, the cable 6 passes through the rear part 5 of the body to be connected with the circuit board, and the control switch is connected with the circuit board through the safety piece 2;
the safety piece 2 is respectively and electrically connected with the control switch and the circuit board and is used for controlling the switch of the circuit;
the protective cover 3 is connected to the body front 4 and abuts against the safety element 2.
In the embodiment, a button-operated normally open switch is added at the position where the protective cover 3 is arranged on the head body of the angle grinder, and only after the protective cover 3 is arranged in place, the button switch is pressed down to switch on a power supply, so that the main switch of the angle grinder can be started to operate; the safety piece 2 comprises a normally open switch button which is turned on and turned off, is arranged at the installation position of the angle grinder head connecting protective cover 3, and a secondary switch button which is connected to the angle grinder control main line; the electric interlocking is realized by the mechanical pressing of the protective cover 3, the control circuit is connected, and the normal operation of other buttons is realized; the safety member 2 is electrically connected to the control switch and the circuit board, respectively, and the operation method of the control circuit switch is a conventional method, which is not described herein.
In order to further optimize the technical scheme, the safety piece 2 is a point-operated normally open switch. In this embodiment, the normally open switch is a conventional structure, the control circuit is not self-locking, and the control circuit is powered off when the start button is released.
In order to further optimise the solution described above, the protective cover 3 is fixed to the front end of the front body part 4 by means of fasteners 7. In the embodiment, the fastening piece 7 is a hoop, through holes are formed in two ends of the hoop, and two ends of the hoop are in threaded connection through the through holes; the protection cover 3 is fixed at the front end of the front part 4 of the body through the anchor ear, and the protection cover 3 can be better fixed through the anchor ear, so that the protection effect is good.
In order to further optimise the above technical solution, the button of the safety element 2 is located between the anchor ear and the body front 4, the anchor ear being connected to the body front 4 and abutting against the push button. In the embodiment, the safety piece 2, namely a button-operated normally open switch, is positioned at the position of the angle grinder head body where the protective cover 3 is arranged, after the protective cover 3 is arranged in place, the protective cover 3 can press down the button switch, the secondary switch button is connected to the control main line of the angle grinder, and the control circuit can realize electric interlocking by pressing down the machine arranged on the protective cover 3, and the control circuit is connected to realize the normal operation of other buttons; if the protective cover 3 is not installed, the button switch can spring up, so that other buttons cannot be operated normally, and an angle grinder cannot be used; the protection cover 3 of the angle grinder can be forcibly installed in place, the angle grinder without the protection cover 3 is prevented from being used by people to be disassembled randomly, and the safety standard of the angle grinder can be improved basically.
In order to further optimize the technical scheme, the grinding wheel machine further comprises a grinding wheel 8, and the grinding wheel 8 is fixedly connected with the rotor. In the embodiment, the rotor is provided with a rotating shaft protruding from the stator, the protruding direction of the rotating shaft is arranged towards the front end of the front part 4 of the body, and the grinding wheel 8 is fixedly connected with the rotating shaft; the structure design is simple and reasonable, and the use and the replacement are convenient.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. The hand-held angle grinder is characterized by comprising an angle grinder body, a stator, a rotor, a control device, a safety piece and a protective cover;
the angle grinder body comprises a body front part and a body rear part which are connected with each other;
the stator is arranged in the front part of the body, and the rotor is arranged in the stator;
the control device comprises a control switch, a circuit board and a cable, wherein the control switch and the circuit board are arranged in the rear part of the body, the cable penetrates through the rear part of the body to be connected with the circuit board, and the control switch is connected with the circuit board through the safety piece;
the safety piece is respectively and electrically connected with the control switch and the circuit board and is used for controlling the switch of the circuit;
the protective cover is connected with the front part of the body and is abutted with the safety piece.
2. A hand held angle grinder according to claim 1, wherein the safety member is a normally open click switch.
3. A hand held angle grinder according to claim 1, wherein the protective cover is secured to the front end of the front portion of the body by fasteners.
4. A hand held angle grinder according to claim 3, wherein the fastener is a hoop, through holes are provided at both ends of the hoop, and both ends of the hoop are screwed through the through holes.
5. The hand held angle grinder of claim 4, wherein the button of the safety member is located between the anchor ear and the front portion of the body, the anchor ear being connected to the front portion of the body and abutting against the button.
6. The hand held angle grinder of claim 1, further comprising a grinding wheel fixedly coupled to the rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321748126.8U CN220762114U (en) | 2023-07-05 | 2023-07-05 | Hand-held angle grinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321748126.8U CN220762114U (en) | 2023-07-05 | 2023-07-05 | Hand-held angle grinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220762114U true CN220762114U (en) | 2024-04-12 |
Family
ID=90611906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321748126.8U Active CN220762114U (en) | 2023-07-05 | 2023-07-05 | Hand-held angle grinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220762114U (en) |
-
2023
- 2023-07-05 CN CN202321748126.8U patent/CN220762114U/en active Active
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| GR01 | Patent grant |