CN201026597Y - Electric driven spanners - Google Patents
Electric driven spanners Download PDFInfo
- Publication number
- CN201026597Y CN201026597Y CNU2007201083045U CN200720108304U CN201026597Y CN 201026597 Y CN201026597 Y CN 201026597Y CN U2007201083045 U CNU2007201083045 U CN U2007201083045U CN 200720108304 U CN200720108304 U CN 200720108304U CN 201026597 Y CN201026597 Y CN 201026597Y
- Authority
- CN
- China
- Prior art keywords
- motor
- fly wheel
- output shaft
- buffer gear
- flywheel
- 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 - Lifetime
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- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
Abstract
The utility model belonging to electric tools, in particular to an electric watch wrench, comprises an electric motor, a fly wheel, a centrifugal block and an output shaft. The electric watch wrench is characterized in that the motor is provided with a small gear which meshes with a buffer gear which is connected with the fly heel. Steel balls and a buffer spring are arranged between the buffer gear and the fly wheel and the two sides of the fly wheel are provided with the centrifugal block which is provided with a reset torsion spring. The output shaft is arranged in the middle of the fly wheel. The utility model is designed to separate the motor from the fly wheel, so the fly wheel drives the output shaft to impact the screw cap when the screw cap is unlocked and the screw cap transiently stops under the reaction force of the impact. Because the motor drives the buffer gear to rotate by the small gear, the buffer gear is separated from the fly wheel in the process of impact so the motor is not affected by the fly wheel, and the screw cap can be taken down with enough torques after the impact. The torque ratio of the utility model is 10% to 20% larger than that of the similar electric watch wrenches and besides the electric watch wrench needs small motor power, is small in volume, light in weight, more reliable in structure and convenient to use.
Description
Technical field
The utility model belongs to the electric tool class, specifically is a kind of electric wrench.
Background technology
Existing electric wrench is of a great variety, and its structure is roughly the same, all directly drives flywheel by motor and rotates, and centrifugal is moved under the centrifugal action of flywheel, just closes the output shaft rotation with output shaft.When opening nut, flywheel drives output shaft nut is unclamped in nut generation impact, unloads nut by the rotation of motor.The electric wrench of this structure is because motor directly drives the flywheel rotation, inevitable instantaneous generation pauses under the reaction of impacting, just can't unload nut if motor torque is little, thus require motor that enough big power is arranged, so the general volume ratio of the electric wrench on the market is bigger.
Summary of the invention
The purpose of this utility model is the deficiency at existing technology, provides the more reasonable structure of a kind of motor and flywheel separate design, nut easily to open, volume is little, lightweight electric wrench.
The technical solution of the utility model is as follows:
A kind of electric wrench, comprise motor, flywheel, centrifugal, output shaft, it is characterized in that: motor has pinion, pinion and buffer gear cold engagement, buffer gear cold is connected with flywheel, and steel ball and buffering spring are housed between buffer gear cold and the flywheel, and centrifugal is installed in the flywheel both sides, on centrifugal reduction torsion spring is housed, output shaft is contained in the middle of the flywheel.
Motor of the present utility model drives the buffer gear cold rotation by pinion, flywheel rotation under buffer gear cold drives, centrifugal is moved under the centrifugal action of flywheel, just close with output shaft, the output shaft rotation, end at output shaft can be installed various standard cartridges, and output shaft drives sleeve nut is produced impact unlatching nut during use.
The utility model is because with motor and flywheel separate design, flywheel drives output shaft nut is produced impact when opening nut, instantaneous stopping under the reaction force that impacts, because motor drives the buffer gear cold rotation by pinion, during impact buffer gear cold and divided flywheel from, motor is not influenced by flywheel, has enough torques to unload nut after the buffering.The similar electric wrench of torque ratio of the present utility model is big by 10%～20%, and required motor power is little, and volume is little, and is in light weight, more reasonable structure, use more convenient.
Description of drawings
Fig. 1 is the utility model structural representation.
The specific embodiment
As shown in Figure 1, a kind of electric wrench, comprise motor 1, flywheel 6, centrifugal 7, output shaft 9, it is characterized in that: motor 1 has pinion 2, pinion 2 and a buffer gear cold 3 engagements, and buffer gear cold 3 is connected with flywheel 6, steel ball 4 and buffering spring 5 are housed between buffer gear cold 3 and the flywheel 6, be installed in flywheel 6 both sides for centrifugal 7, reduction torsion spring 8 be housed on centrifugal 7, output shaft 9 is contained in the middle of the flywheel 6.
The utility model can be installed various standard cartridges at an end of output shaft 9.
Claims (2)
1. electric wrench, comprise motor (1), flywheel (6), centrifugal (7), output shaft (9), it is characterized in that: motor (1) has pinion (2), pinion (2) and a buffer gear cold (3) engagement, buffer gear cold (3) is connected with flywheel (6), and steel ball (4) and buffering spring (5) are housed between buffer gear cold (3) and the flywheel (6), and centrifugal (7) are installed in flywheel (6) both sides, reduction torsion spring (8) is housed on centrifugal (7), and output shaft (9) is contained in the middle of the flywheel (6).
2. electric wrench according to claim 1 is characterized in that: the end at output shaft (9) is installed various standard cartridges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201083045U CN201026597Y (en) | 2007-04-16 | 2007-04-16 | Electric driven spanners |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201083045U CN201026597Y (en) | 2007-04-16 | 2007-04-16 | Electric driven spanners |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201026597Y true CN201026597Y (en) | 2008-02-27 |
Family
ID=39130798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201083045U Expired - Lifetime CN201026597Y (en) | 2007-04-16 | 2007-04-16 | Electric driven spanners |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201026597Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102712075A (en) * | 2009-10-23 | 2012-10-03 | 株式会社牧田 | Shock absorbing mechanism for gear train |
| CN103567939A (en) * | 2012-08-02 | 2014-02-12 | 吴中华 | Improved electric wrench |
| CN105451943A (en) * | 2013-08-08 | 2016-03-30 | 阿特拉斯·科普柯工业技术公司 | Torque delivering power tool with flywheel |
-
2007
- 2007-04-16 CN CNU2007201083045U patent/CN201026597Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102712075A (en) * | 2009-10-23 | 2012-10-03 | 株式会社牧田 | Shock absorbing mechanism for gear train |
| CN102712075B (en) * | 2009-10-23 | 2014-11-19 | 株式会社牧田 | Shock absorbing mechanism for gear train |
| CN103567939A (en) * | 2012-08-02 | 2014-02-12 | 吴中华 | Improved electric wrench |
| CN105451943A (en) * | 2013-08-08 | 2016-03-30 | 阿特拉斯·科普柯工业技术公司 | Torque delivering power tool with flywheel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080227 |
|
| CX01 | Expiry of patent term |