CN103151668A - Protective device of electric tool commutator - Google Patents
Protective device of electric tool commutator Download PDFInfo
- Publication number
- CN103151668A CN103151668A CN2013100434542A CN201310043454A CN103151668A CN 103151668 A CN103151668 A CN 103151668A CN 2013100434542 A CN2013100434542 A CN 2013100434542A CN 201310043454 A CN201310043454 A CN 201310043454A CN 103151668 A CN103151668 A CN 103151668A
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- CN
- China
- Prior art keywords
- contact chip
- elastomeric element
- commutator
- electric tool
- power supply
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- 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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Abstract
The invention provides a protective device of an electric tool commutator. The protective device comprises the commutator and an electrical carbon assembly, wherein the commutator is arranged inside a motor of an electric tool and the electrical carbon assembly abuts against the commutator. The electrical carbon assembly comprises a brush holder and electrical carbon, a guide groove is formed on the brush holder, the electrical carbon is positioned inside the guide groove and the front end of the electric carbon abuts against the commutator. An elastic part which is used for abutting the electrical carbon against the commutator is arranged inside the guide groove, and a contact chip is arranged at the front end of the guide groove. The elastic part and the contact chip are conductors, and the contact chip is not contacted with the electrical carbon. The electrical carbon assembly further comprises a power source and an alarming device. The elastic part, the contact chip and the alarming device are connected with the power source in an electric mode, when the elastic part is contacted with the contact chip, the alarming device raises an alarm. The protective device of the electric tool commutator has the advantages of being simple in structure, small in size, convenient to install and use, good in protective effects and low in manufacturing cost.
Description
Technical field
The present invention relates to the field of power tools with spring, disc spring or the spacing electrical carbon of torsion spring, be specifically related to a kind of protective device of electric tool commutator.
Background technology
Electrical carbon is electric tool a kind of materials and parts commonly used, and in casing, people usually in use do not know the life-span of electrical carbon because electrical carbon is in, and produce very large spark, the life-span that very large infringement can reduce motor to commutator to last.Though have on market now can auto-breaking electrical carbon, be half of self electrical carbon useful life, expensive, greatly increased cost.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of protective device of electric tool commutator, and is simple in structure, volume is little, and is easy to install, protects effectively, and cost of manufacture is low.
for solving above-mentioned existing technical problem, the present invention adopts following scheme: a kind of protective device of electric tool commutator, comprise the commutator that is located in electric tool motor and the electrical carbon assembly that is against on commutator, described electrical carbon assembly comprises brush carrier and electrical carbon, described brush carrier is provided with guide groove, described electrical carbon is positioned in guide groove and front end is against on commutator, be provided with in described guide groove electrical carbon is against elastomeric element on commutator, described guide groove front end is provided with contact chip, described elastomeric element and contact chip are conductor, described contact chip does not contact with electrical carbon, also comprise power supply and alarm device, described elastomeric element, contact chip and alarm device all are electrically connected to power supply, alarm device alarm when elastomeric element contacts with contact chip.
As preferably, described elastomeric element, power supply, alarm device, contact chip be electricity serial connection or described elastomeric element, alarm device, power supply, contact chip electricity serial connection successively successively, and elastomeric element, power supply, alarm device, contact chip are connected into closed series loop when elastomeric element contacts with contact chip.
As preferably, described electrical carbon assembly is two groups.
As preferably, described brush carrier is conductor, and described elastomeric element contacts with brush carrier and connects by brush carrier and alarm device, power supply and contact chip electricity, insulate by insulator between described brush carrier and contact chip.
As preferably, described brush carrier insulation.
As preferably, described elastomeric element electricity is concatenated into power supply one end, the contact chip electricity is concatenated into the power supply other end, and described alarm device and elastomeric element, contact chip are in parallel, alarm device short circuit when elastomeric element contacts with contact chip.
As preferably, described motor is also started building to do by Power supply belt.
As preferably, described elastomeric element is spring, torsion spring or disc spring.
As preferably, described alarm device is LED lamp or thumper.The LED lamp can be by bright or go out and play alarm function, and thumper can be by the alarm function of sounding.
Beneficial effect:
The present invention adopts the protective device of a kind of electric tool commutator that technique scheme provides, and is simple in structure, volume is little, and is easy to install, protects effectively, and cost of manufacture is low.
Description of drawings
Fig. 1 is the structural representation of brush carrier in the embodiment of the present invention one;
Fig. 2 is the structural representations of the embodiment of the present invention one Elastic parts when not touching contact chip;
Fig. 3 is the structural representations of the embodiment of the present invention one Elastic parts when touching contact chip;
Fig. 4 is the circuit connection diagram of the embodiment of the present invention one;
Fig. 5 is the circuit connection diagram of the embodiment of the present invention three.
Embodiment
Embodiment one:
as shown in Figures 1 to 4, a kind of protective device of electric tool commutator, comprise the commutator that is located in electric tool motor and the electrical carbon assembly that is against on commutator, described electrical carbon assembly comprises brush carrier 5 and electrical carbon 6, described brush carrier 5 is provided with guide groove, described electrical carbon 6 is positioned in guide groove and front end is against on commutator, be provided with in described guide groove electrical carbon 6 is against elastomeric element 4 on commutator, described guide groove front end is provided with contact chip 1, described elastomeric element 4 and contact chip 1 are conductor, described contact chip 1 does not contact with electrical carbon 6, also comprise power supply 2 and alarm device 3, described elastomeric element 4, contact chip 1 and alarm device 3 all are electrically connected to power supply 2, alarm device 3 alarms when elastomeric element 4 contacts with contact chip 1.Described elastomeric element 4, power supply 2, alarm device 3, contact chip 1 be electricity serial connection or described elastomeric element 4, alarm device 3, power supply 2, contact chip 1 electricity serial connection successively successively, elastomeric element 4, power supply 2, alarm device 3, the contact chip 1 closed series loop of formation when elastomeric element 4 contacts with contact chip 1.Described electrical carbon assembly is two groups.Described brush carrier 5 is conductor, and described elastomeric element 4 contacts with brush carrier 5 and passes through brush carrier 5 and connect with alarm device 3, power supply 2 and contact chip 1 electricity, insulate by insulator 51 between described brush carrier 5 and contact chip 1.Described motor is also by power supply 2 drive work.Described elastomeric element 4 is spring, torsion spring or disc spring.Described alarm device 3 is LED lamp or thumper.
In the present embodiment, alarm device 3, elastomeric element 4 and contact chip 1 are connected on power supply 2, do not contact with contact chip 1 when elastomeric element 4 and make, circuit disconnects, during machine operation along with the described elastomeric element of the wearing and tearing of electrical carbon 4 ends gradually near contact chip 1 and finally contact with contact chip 1, when elastomeric element 4 contacts with contact chip 1, series circuit formation closed-loop path, alarm device 3 gives the alarm, and as bright in the LED lamp or thumper sends the sound.Power supply 2 can also can be DC power supply for AC power, can break down to prevent series circuit by the elements such as loaded switches, electric capacity, resistance in circuit.When the present embodiment adopted two groups of electrical carbon assemblies, power supply also can an end be electrically connected to contact chip 1 on one group of electrical carbon assembly, the other end is electrically connected to another brush carrier 5 of organizing on electrical carbon assembly.
Embodiment two:
Be with the difference of embodiment one: described brush carrier 5 insulation.
Embodiment three:
As shown in Figure 5, be with the difference of embodiment one: described elastomeric element 4 electricity are concatenated into power supply 2 one ends, contact chip 1 electricity is concatenated into power supply 2 other ends, described alarm device 3 and elastomeric element 4, contact chip 1 are in parallel, alarm device 3 short circuits when elastomeric element 4 contacts with contact chip 1.Described alarm device 3 is the LED lamp.Alarm device 3 short circuits when elastomeric element 4 contacts with contact chip 1, the LED lamp is to extinguish as alarm.
Claims (9)
1. the protective device of an electric tool commutator, comprise the commutator that is located in electric tool motor and the electrical carbon assembly that is against on commutator, described electrical carbon assembly comprises brush carrier (5) and electrical carbon (6), described brush carrier (5) is provided with guide groove, described electrical carbon (6) is positioned in guide groove and front end is against on commutator, be provided with in described guide groove electrical carbon (6) is against elastomeric element (4) on commutator, it is characterized in that: described guide groove front end is provided with contact chip (1), described elastomeric element (4) and contact chip (1) are conductor, described contact chip (1) does not contact with electrical carbon (6), also comprise power supply (2) and alarm device (3), described elastomeric element (4), contact chip (1) and alarm device (3) all are electrically connected to power supply (2), when elastomeric element (4) and contact chip (1) alarm device (3) alarm when contacting.
2. the protective device of a kind of electric tool commutator according to claim 1; it is characterized in that: described elastomeric element (4), power supply (2), alarm device (3), contact chip (1) be electricity serial connection or described elastomeric element (4), alarm device (3), power supply (2), contact chip (1) electricity serial connection successively successively, when elastomeric element (4) and contact chip (1) when contacting elastomeric element (4), power supply (2), alarm device (3), contact chip (1) be connected into closed series loop.
3. the protective device of a kind of electric tool commutator according to claim 2, it is characterized in that: described electrical carbon assembly is two groups.
4. the protective device of according to claim 1 and 2 or 3 described a kind of electric tool commutators; it is characterized in that: described brush carrier (5) is conductor; described elastomeric element (4) contacts with brush carrier (5) and passes through brush carrier (5) and connect with alarm device (3), power supply (2) and contact chip (1) electricity, insulate by insulator (51) between described brush carrier (5) and contact chip (1).
5. the protective device of according to claim 1 and 2 or 3 described a kind of electric tool commutators, is characterized in that: described brush carrier (5) insulation.
6. the protective device of a kind of electric tool commutator according to claim 1; it is characterized in that: described elastomeric element (4) electricity is concatenated into power supply (2) one ends, contact chip (1) electricity is concatenated into power supply (2) other end; described alarm device (3) and elastomeric element (4), contact chip (1) are in parallel, when elastomeric element (4) and contact chip (1) alarm device (3) short circuit when contacting.
7. the protective device of according to claim 1 and 2 or 3 or 6 described a kind of electric tool commutators, it is characterized in that: described motor is also by power supply (2) drive work.
8. the protective device of according to claim 1 and 2 or 3 or 6 described a kind of electric tool commutators, it is characterized in that: described elastomeric element (4) is spring, torsion spring or disc spring.
9. the protective device of according to claim 1 and 2 or 3 or 6 described a kind of electric tool commutators, it is characterized in that: described alarm device (3) is LED lamp or thumper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100434542A CN103151668A (en) | 2013-01-31 | 2013-01-31 | Protective device of electric tool commutator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100434542A CN103151668A (en) | 2013-01-31 | 2013-01-31 | Protective device of electric tool commutator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103151668A true CN103151668A (en) | 2013-06-12 |
Family
ID=48549603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100434542A Pending CN103151668A (en) | 2013-01-31 | 2013-01-31 | Protective device of electric tool commutator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103151668A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109713852A (en) * | 2019-02-21 | 2019-05-03 | 芜湖杰诺瑞汽车电器系统有限公司 | A kind of low-loss automobile current generator of drop |
| US11566675B2 (en) | 2018-03-21 | 2023-01-31 | Ab Dynamoborstfabriken | Intelligent graphite device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201075562Y (en) * | 2007-08-17 | 2008-06-18 | 王一旭 | Automatic alarm carbon brush holder |
| CN201122782Y (en) * | 2007-11-26 | 2008-09-24 | 黄理 | Carbon brush abrasion reminding device of carbon brush electric motor |
| CN201378673Y (en) * | 2009-03-16 | 2010-01-06 | 浙江恒友机电有限公司 | Wear limit alarm device for carbon brush for electric machine |
| CN202231536U (en) * | 2011-09-26 | 2012-05-23 | 白树春 | DC motor carbon brush device |
| CN203180285U (en) * | 2013-01-31 | 2013-09-04 | 浙江亚特电器有限公司 | Electric tool commutator protective device |
-
2013
- 2013-01-31 CN CN2013100434542A patent/CN103151668A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201075562Y (en) * | 2007-08-17 | 2008-06-18 | 王一旭 | Automatic alarm carbon brush holder |
| CN201122782Y (en) * | 2007-11-26 | 2008-09-24 | 黄理 | Carbon brush abrasion reminding device of carbon brush electric motor |
| CN201378673Y (en) * | 2009-03-16 | 2010-01-06 | 浙江恒友机电有限公司 | Wear limit alarm device for carbon brush for electric machine |
| CN202231536U (en) * | 2011-09-26 | 2012-05-23 | 白树春 | DC motor carbon brush device |
| CN203180285U (en) * | 2013-01-31 | 2013-09-04 | 浙江亚特电器有限公司 | Electric tool commutator protective device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11566675B2 (en) | 2018-03-21 | 2023-01-31 | Ab Dynamoborstfabriken | Intelligent graphite device |
| CN109713852A (en) * | 2019-02-21 | 2019-05-03 | 芜湖杰诺瑞汽车电器系统有限公司 | A kind of low-loss automobile current generator of drop |
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Application publication date: 20130612 |