CN203180285U - Electric tool commutator protective device - Google Patents
Electric tool commutator protective device Download PDFInfo
- Publication number
- CN203180285U CN203180285U CN 201320062933 CN201320062933U CN203180285U CN 203180285 U CN203180285 U CN 203180285U CN 201320062933 CN201320062933 CN 201320062933 CN 201320062933 U CN201320062933 U CN 201320062933U CN 203180285 U CN203180285 U CN 203180285U
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- CN
- China
- Prior art keywords
- contact chip
- elastomeric element
- commutator
- electric tool
- electrical carbon
- 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.)
- Expired - Fee Related
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Abstract
The utility model provides an electric tool commutator protective device comprising a commutator arranged in a motor of the electric tool and an electrical carbon component bearing against the commutator. The electrical carbon component comprises a brush holder and an electrical carbon. A guide groove is provided on the brush holder. The electrical carbon is positioned in the guide groove, and the front end of the electrical carbon bears against the commutator. An elastic part used for pressing the electrical carbon on the commutator is arranged in the guide groove. A contact piece is arranged on the front end of the guide groove. The elastic part and the contact piece are both conductors. The contact piece does not contact the electrical carbon. The device also comprises a power source and an alarming device. The elastic part, the contact piece, and the alarming device are all electrically connected with the power source. When the elastic part connects the contact piece, the alarming device gives alarm. The device provided by the utility model has the advantages of simple structure, small volume, convenient assembly and application, good protection effect, and low manufacturing cost.
Description
Technical field
The utility model relates to the field of power tools with spring, disc spring or the spacing electrical carbon of torsion spring, is 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, because electrical carbon is in the life-span that the interior people of casing usually in use do not know electrical carbon, produces very big spark, the life-span that very big infringement can reduce motor to commutator to last.Though on the market electrical carbon that can cut off the power supply is automatically arranged now, be half of self electrical carbon useful life, expensive, increased cost greatly.
Summary of the invention
Technical problem to be solved in the utility model 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 utility model adopts following scheme: a kind of protective device of electric tool commutator; comprise the commutator that is located in the electric tool motor and the electrical carbon assembly that is against on the 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 the guide groove and front end is against on the commutator; be provided with in the described guide groove electrical carbon is against elastomeric element on the 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 with 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 the 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 the alarm effect, and thumper can be by the alarm effect of sounding.
Beneficial effect:
The utility model 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 among the utility model embodiment one;
Structural representation when Fig. 2 does not touch contact chip for elastomeric element among the utility model embodiment one;
Structural representation when Fig. 3 touches contact chip for elastomeric element among the utility model embodiment one;
Fig. 4 is the circuit connection diagram of the utility model embodiment one;
Fig. 5 is the circuit connection diagram of the utility model embodiment three.
Embodiment
Embodiment one:
Shown in Fig. 1 to 4; a kind of protective device of electric tool commutator; comprise the commutator that is located in the electric tool motor and the electrical carbon assembly that is against on the 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 the guide groove and front end is against on the commutator; be provided with in the described guide groove electrical carbon 6 is against elastomeric element 4 on the 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 with 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 closed series loop of contact chip 1 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 connects with alarm device 3, power supply 2 and contact chip 1 electricity by brush carrier 5, insulate by insulator 51 between described brush carrier 5 and the 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 the power supply 2, when not contacting with contact chip 1, elastomeric element 4 do not make, circuit disconnects, along with the described elastomeric element of the wearing and tearing of electrical carbon 4 ends also finally contact with contact chip 1 near contact chip 1 gradually, when elastomeric element 4 contacted with contact chip 1, series circuit formed the closed-loop path during machine operation, alarm device 3 gives the alarm, and bright or thumper sends the sound as the LED lamp.Power supply 2 can also can be DC power supply for AC power, can break down to prevent series circuit by elements such as loaded switches, electric capacity, resistance in circuit.When present embodiment adopted two groups of electrical carbon assemblies, power supply also can an end be electrically connected with contact chip 1 on one group of electrical carbon assembly, the other end is electrically connected with brush carrier 5 on another group 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 the electric tool motor and the electrical carbon assembly that is against on the 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 the guide groove and front end is against on the commutator; be provided with in the described guide groove electrical carbon (6) is against elastomeric element (4) on the 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 with 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. according to the protective device of claim 1 or 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 connects with alarm device (3), power supply (2) and contact chip (1) electricity by brush carrier (5), insulate by insulator (51) between described brush carrier (5) and the contact chip (1).
5. according to the protective device of claim 1 or 2 or 3 described a kind of electric tool commutators, it 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. according to claim 1 or 2 or the protective device of 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. according to claim 1 or 2 or the protective device of 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. according to claim 1 or 2 or the protective device of 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 |
|---|---|---|---|
| CN 201320062933 CN203180285U (en) | 2013-01-31 | 2013-01-31 | Electric tool commutator protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320062933 CN203180285U (en) | 2013-01-31 | 2013-01-31 | Electric tool commutator protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203180285U true CN203180285U (en) | 2013-09-04 |
Family
ID=49076945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320062933 Expired - Fee Related CN203180285U (en) | 2013-01-31 | 2013-01-31 | Electric tool commutator protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203180285U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103151668A (en) * | 2013-01-31 | 2013-06-12 | 浙江亚特电器有限公司 | Protective device of electric tool commutator |
-
2013
- 2013-01-31 CN CN 201320062933 patent/CN203180285U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103151668A (en) * | 2013-01-31 | 2013-06-12 | 浙江亚特电器有限公司 | Protective device of electric tool commutator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130904 Termination date: 20160131 |
|
| EXPY | Termination of patent right or utility model |