CN203236409U - Electric torque-adjustable screwdriver - Google Patents
Electric torque-adjustable screwdriver Download PDFInfo
- Publication number
- CN203236409U CN203236409U CN 201320182098 CN201320182098U CN203236409U CN 203236409 U CN203236409 U CN 203236409U CN 201320182098 CN201320182098 CN 201320182098 CN 201320182098 U CN201320182098 U CN 201320182098U CN 203236409 U CN203236409 U CN 203236409U
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- torque
- electric
- adjustable
- motor
- connecting rod
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- Expired - Fee Related
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- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The utility model discloses an electric torque-adjustable screwdriver which mainly comprises front and rear housings, a DC torque motor in the rear housing, a flexible coupler connecting the protruding end of the motor and a connecting rod, a connecting rod for connecting a general chuck, a general chuck, an adjustable DC regulated power supply, electric screwdriver blades and other fittings. Since the DC torque motor can work under a locked rotor condition for a long time, and voltage applied corresponds to the output torque, a screw can be tightened to a desirable tightening torque. The electric torque-adjustable screwdriver is simple in structure, stably controls output torque and can adjust torque. The electric torque-adjustable screwdriver is applicable to the field with high requirements on tightening torque.
Description
Affiliated technical field
The utility model relates to field of power tools, refers to especially the electric screw driver that a kind of moment of torsion is adjustable.
Background technology
Existing electric screw driver major part does not possess the adjustable function of moment of torsion, all is the speed that simply represents rotating speed with gear, is difficult to adapt to the requirement of the different screw-down torque of screw under the different situations.But the electric screw driver that the minority moment of torsion is adjustable, structure is more complicated all, and installation and maintenance are also inconvenient, and are difficult to guarantee the precision of output torque.
Summary of the invention
In order to overcome the baroque shortcoming of the adjustable electric screw driver of existing moment of torsion, the utility model provides a kind of moment of torsion adjustable electric screw driver, and is not only simple in structure, and can stably control the moment of torsion of output, and moment of torsion that can regulation output.
The technical scheme that the utility model technical solution problem adopts is: provide a kind of moment of torsion adjustable electric screw driver, housing before and after it comprises, be arranged in the direct current torque motor of back casing, the connecting rod that is connected with general chuck, the flexible clutch that connects motor external part and connecting rod, also have the adjustable D. C regulated that links to each other with motor and an angular contact ball bearing, general chuck, switch, screw, electric wire, the first-class accessory of electric screw driver, general chuck just uses the common electric screwdriver chuck to get final product, and the required electric screw cutter head that screw matches of tightening is followed in clamping in the chuck.
Utilize direct current torque motor can work long hours in the stall situation, and when stall, can keep a constant output torque, and the moment of torsion during stall has this characteristic of continuous functional relation with the voltage that is added in the motor two ends, in the process of tighten the screws, resistance increases gradually, when resistance equals the motor output torque, motor rotation blockage, the moment of torsion of the moment of torsion of the resistance that bears on the screw and electric screw driver output reaches balance, can take electric screw driver away, at this moment the screw-down torque of screw is the output torque of electric screw driver.And because DC Torque Motor Speed is lower, saved the mechanism that general electric screw driver slows down, greatly saved the space.
The invention has the beneficial effects as follows, can export continuously the moment of torsion that needs, satisfy the requirement to the required different screw-down torques of different screws, and saving simple in structure space, because the use of flexible clutch and angular contact ball bearing has reduced the impact to motor greatly, prolonged the service life of motor simultaneously.The utility model can be applicable to the field that the size to the screw-down torque of screw has higher requirements.
Description of drawings
Below in conjunction with drawings and Examples this novel practical is further specified.
Fig. 1 is the internal structure schematic diagram of this novel practical.
Fig. 2 is the front view of electric screw driver.
(1) procapsid among the figure, (2) angular contact ball bearing, (3) connecting rod, (4) general chuck, (5) flexible clutch, (6) direct current torque motor, (7) back casing, (8) handle, (9) flat head screw, (10) sunk screw, (11) switch, (12) electric wire, (13) D.C. regulated power supply, (14) electric screw cutter head
The specific embodiment
In Fig. 1, direct current torque motor (6) is connected 7 with back casing) connect with sunk screw (10), again an end of the external part of motor and flexible clutch (5) is carried screw with shaft coupling and be connected.Then angular contact ball bearing (2) is assembled in the procapsid (1), connecting rod (3) is passed bearing inner race, then carry screw with shaft coupling and connect flexible clutch (5) and connecting rod (3).Bearing inner race and connecting rod (3) adopt interference fit, and bearing outer ring and procapsid also (1) adopt interference fit.Connecting rod (3) and motor external part and flexible clutch (5) adopt matched in clearance.
In Fig. 2, the both positive and negative polarity with direct current torque motor (6) links to each other with electric wire first, and electric wire is passed hole in the handle (8), and connects with switch, then electric wire is connected with adjustable D. C regulated (13) to get final product.Handle (8) is connected with flat head screw (9) with back casing, and procapsid (1) is connected with flat head screw (9) with back casing (7).
Claims (1)
1. electric screw driver that moment of torsion is adjustable, housing before and after it comprises, be arranged in the direct current torque motor of back casing, the connecting rod that is connected with general chuck, the flexible clutch that connects motor external part and connecting rod, also have an adjustable D. C regulated that links to each other with motor and angular contact ball bearing, general chuck, switch, screw, electric wire, the first-class accessory of electric screw driver, it is characterized in that: direct current torque motor is positioned at electric screw driver, is used for the control output torque.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320182098 CN203236409U (en) | 2013-04-12 | 2013-04-12 | Electric torque-adjustable screwdriver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320182098 CN203236409U (en) | 2013-04-12 | 2013-04-12 | Electric torque-adjustable screwdriver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203236409U true CN203236409U (en) | 2013-10-16 |
Family
ID=49313738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320182098 Expired - Fee Related CN203236409U (en) | 2013-04-12 | 2013-04-12 | Electric torque-adjustable screwdriver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203236409U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105437137A (en) * | 2014-07-23 | 2016-03-30 | 国际商业机器公司 | Screw screw-in method and device |
| CN108274227A (en) * | 2018-03-05 | 2018-07-13 | 王聪 | Automatic take-up and its working method for bolt connecting elements |
| CN112171252A (en) * | 2020-09-08 | 2021-01-05 | 上海市建筑科学研究院科技发展有限公司 | Multifunctional assembly rotary table with fixed-moment tightening mechanism and assembly method |
-
2013
- 2013-04-12 CN CN 201320182098 patent/CN203236409U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105437137A (en) * | 2014-07-23 | 2016-03-30 | 国际商业机器公司 | Screw screw-in method and device |
| CN108274227A (en) * | 2018-03-05 | 2018-07-13 | 王聪 | Automatic take-up and its working method for bolt connecting elements |
| CN108274227B (en) * | 2018-03-05 | 2023-09-26 | 王聪 | Automatic tightening device for bolt connecting member and working method thereof |
| CN112171252A (en) * | 2020-09-08 | 2021-01-05 | 上海市建筑科学研究院科技发展有限公司 | Multifunctional assembly rotary table with fixed-moment tightening mechanism and assembly method |
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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: 20131016 Termination date: 20140412 |
|
| EXPY | Termination of patent right or utility model |