CN202462312U - DC electric wrench - Google Patents
DC electric wrench Download PDFInfo
- Publication number
- CN202462312U CN202462312U CN2012200747641U CN201220074764U CN202462312U CN 202462312 U CN202462312 U CN 202462312U CN 2012200747641 U CN2012200747641 U CN 2012200747641U CN 201220074764 U CN201220074764 U CN 201220074764U CN 202462312 U CN202462312 U CN 202462312U
- Authority
- CN
- China
- Prior art keywords
- reduction box
- motor
- output shaft
- electric wrench
- transmission mechanism
- 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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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The utility model discloses a DC electric wrench which comprises a DC motor (1) and an eccentric type clutch transmission mechanism (2), and also comprises a speed reduction box (3), wherein an output shaft (1.1) of the DC motor (1) extends into the speed reduction box (3), and an output shaft (3.1) of the speed reduction box (3) extends into the eccentric type clutch transmission mechanism (2). The DC electric wrench has the advantages of small energy consumption and small volume.
Description
Technical field
The utility model relates to mechanical field, specifically is a kind of direct current electric wrench.
Background technology
Direct current electric wrench is the electric tool that is used for tightening or unscrewing screw; It comprises dc motor, centrifugal clutching transmission mechanism and eccentric shaft; The output shaft of dc motor stretches into centrifugal clutching transmission mechanism;, rotate to the eccentric shaft transmission through centrifugal clutching transmission mechanism thereby drive eccentric shaft.Need tighten with direct current electric wrench, when unscrewing screw; One end of sleeve is linked in and makes sleeve and eccentric shaft circumferentially spacing on the eccentric shaft; The other end of sleeve is linked in screw head makes sleeve and screw head circumferentially spacing, at this moment, eccentric rotation axis; Just can drive the screw rotation, realize tightening or unscrewing the purpose of screw through sleeve.
The rotating speed and the moment of torsion of the input of the centrifugal clutching transmission mechanism of the direct current electric wrench of prior art (just stretching into the output shaft of the dc motor of centrifugal clutching transmission mechanism) have requirement; Will be like input shaft rotational speed at 6500 commentaries on classics/min; The moment of torsion of power shaft will like this, just must adopt the dc motor of high-power (like 80W) about 65N.m; This dc motor volume is big; So increased the overall dimensions of this direct current electric wrench, and energy consumption is big, battery consumption is big.
Summary of the invention
The technical problem that the utility model will solve is that the direct current electric wrench that a kind of energy consumption is little, volume is little is provided.
The technical solution of the utility model is; A kind of direct current electric wrench is provided, and it comprises dc motor and centrifugal clutching transmission mechanism, and it also comprises a reduction box; The output shaft of dc motor stretches into reduction box, and the output shaft of reduction box stretches into centrifugal clutching transmission mechanism.
The direct current electric wrench of the utility model compared with prior art has the following advantages:
Owing to also be provided with reduction box between dc motor and the centrifugal clutching transmission mechanism; And reduction box can play the effect that reduces rotating speed increase moment of torsion; Like this; This direct current electric wrench is the high power direct-current motor that rotating speed is little, moment of torsion is big of the ability small-power dc motor that enough rotating speeds are big, moment of torsion is little replacement prior art just; As can to adopt rotating speed be that 12000 commentaries on classics/min, moment of torsion are that 25N.m, power are the small DC motor of 50W, after this small machine adds moment of torsion through the deceleration of reduction box, still can satisfy rotating speed and the requirement of moment of torsion of the input (just stretching into the output shaft of the reduction box of centrifugal clutching transmission mechanism) of centrifugal clutching transmission mechanism; The overall dimensions of direct current electric wrench has been dwindled in this event, has reduced energy consumption.
As improvement, reduction box also comprises pinion and gear wheel, and pinion is fixed on the output shaft of dc motor, gear wheel and pinion, and gear wheel is fixed on the output shaft of reduction box, and such is simple in structure, reliable in function.
Description of drawings
Fig. 1 is that the utility model direct current electric wrench removes the structural representation of facing behind the shell.
Shown in the figure 1, dc motor, 1.1, the output shaft of dc motor, 2, centrifugal clutching transmission mechanism, 3, reduction box, 3.1, the output shaft of reduction box, 3.2, pinion, 3.3, gear wheel.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is described further.
As shown in Figure 1, the utility model direct current electric wrench, it comprises dc motor 1, centrifugal clutching transmission mechanism 2 and reduction box 3.Reduction box 3 comprises output shaft 3.1, pinion 3.2 and the gear wheel 3.3 of reduction box 3.The output shaft 1.1 of dc motor 1 stretches into reduction box 3; Be fixed with pinion 3.2 on the output shaft 1.1 of dc motor 1; Pinion 3.2 and gear wheel 3.3 engagements, gear wheel 3.3 is fixed on the output shaft 3.1 of reduction box 3, and the output shaft 3.1 of reduction box 3 stretches into centrifugal clutching transmission mechanism 2.The centrifugal clutching transmission mechanism 2 and the dc motor 1 of this direct current electric wrench are prior art; The improvement of the utility model is exactly between the dc motor 1 of prior art and centrifugal clutching transmission mechanism 2, to have added reduction box 3; In order to reduce the rotating speed of dc motor 1, increase its moment of torsion.
Claims (2)
1. direct current electric wrench; It comprises dc motor (1) and centrifugal clutching transmission mechanism (2); It is characterized in that: it also comprises a reduction box (3); The output shaft (1.1) of dc motor (1) stretches into reduction box (3), and the output shaft (3.1) of reduction box (3) stretches into centrifugal clutching transmission mechanism (2).
2. direct current electric wrench according to claim 1; It is characterized in that: reduction box (3) also comprises pinion (3.2) and gear wheel (3.3); Pinion (3.2) is fixed on the output shaft (1.1) of dc motor (1); Gear wheel (3.3) and pinion (3.2) engagement, gear wheel (3.3) is fixed on the output shaft (3.1) of reduction box (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200747641U CN202462312U (en) | 2012-03-02 | 2012-03-02 | DC electric wrench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200747641U CN202462312U (en) | 2012-03-02 | 2012-03-02 | DC electric wrench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202462312U true CN202462312U (en) | 2012-10-03 |
Family
ID=46910505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200747641U Expired - Fee Related CN202462312U (en) | 2012-03-02 | 2012-03-02 | DC electric wrench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202462312U (en) |
-
2012
- 2012-03-02 CN CN2012200747641U patent/CN202462312U/en not_active Expired - Fee Related
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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: 20121003 Termination date: 20150302 |
|
| EXPY | Termination of patent right or utility model |