CN1236693A - Improved electric screw driver - Google Patents
Improved electric screw driver Download PDFInfo
- Publication number
- CN1236693A CN1236693A CN 99113655 CN99113655A CN1236693A CN 1236693 A CN1236693 A CN 1236693A CN 99113655 CN99113655 CN 99113655 CN 99113655 A CN99113655 A CN 99113655A CN 1236693 A CN1236693 A CN 1236693A
- Authority
- CN
- China
- Prior art keywords
- screw driver
- electric screw
- output sleeve
- supporting device
- head
- 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.)
- Pending
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- Motor Or Generator Frames (AREA)
Abstract
An improved electric screw driver is composed of casing, electric motor, gear mechanism, output axle and output axle sleevel. Said output axle sleeve has a tail supported by a thrust bearing, and a head supported by a bearing mechanism arranged between it and casing head. Said bearing mechanism may be rollers, bearing, or limiting ring. Its advantages are its axle sleeve stabilized at both ends, no axial loose and jump when it is used, and low fitting requirement.
Description
The present invention relates to a kind of electric screw driver.
Electric screw driver generally is used for the assembling line of factory, generally comprise housing and be installed on the interior motor of housing, gear mechanism, output shaft and axle sleeve thereof, tool heads is promptly inserted solid on output sleeve, in existing electric screw driver, unlikely generation radially reaches axial becoming flexible when rotating for the assurance output shaft, alignment pin and output shaft that output sleeve and output shaft must close-fitting merga pass one run through fix, the output sleeve root is supported by a single thrust bearing simultaneously, yet there is such defective in so single-ended location structure: during screwdriver work, because the size of the reaction force of workpiece and the uncertainty of direction, having a radial component puts on the output shaft, make output shaft produce flexural deformation, cause output sleeve to produce circular runout, cause the tool heads running that is installed on the output sleeve unstable, both influenced operating efficiency, influence service life again, and being connected between such structural requirement output shaft and the output sleeve must be closely, thereby be not easy to assembling.
Purpose of the present invention provides a kind of output sleeve location electric screw driver firm, easy to assembly with regard to being at the present situation of above-mentioned prior art.
The object of the present invention is achieved like this: electric screw driver comprises housing and is installed on housing interior motor, gear mechanism, output shaft and output sleeve, the afterbody of output sleeve has single thrust bearing supporting, it is characterized in that also being provided with supporting device between described output sleeve head and the housing head; This supporting device can be simple ball, also can be a bearing, or a spacing ring.
Compared with prior art, output sleeve of the present invention all has supporting at two ends end to end, thereby the location is firm, can not cause axial becoming flexible, no longer have jumping phenomena in use, the matching requirements to output sleeve and output shaft simultaneously decrease, and have therefore also made things convenient for assembling.
Description of drawings:
Fig. 1 is the structural representation (broken section) of the embodiment of the invention.
Fig. 2 is the A-A cutaway view of Fig. 1.
Fig. 3 is the structural representation (part) of another embodiment of the present invention.
Fig. 4 is the structural representation (part) of another embodiment of the present invention.
Embodiment is described in further detail the present invention below in conjunction with accompanying drawing.
As shown in Figure 1 and Figure 2, electric screw driver comprises housing 8 and is installed on housing interior motor, gear mechanism (not shown), output shaft 7 and output sleeve 1, the afterbody of output sleeve 1 fixes with output shaft 7 by an alignment pin that runs through 5 and is supported by a single thrust bearing 6 at its root, one circle ball 2 then is set between the head of output sleeve 1 and housing head 4, both make output sleeve 1 head supported, do not influenced its rotation again; For ball 2 is located better, also can one flange 3 be set at output sleeve 1 correspondence position.
Fig. 3, Figure 4 shows that the supporting device of other two kinds of output sleeve heads, respectively with bearing 2 ' and spacing ring 2 " substitute above-mentioned ball 2, the former better effects if but cost is slightly high comparatively speaking, latter's cost is lower but effect is slightly poor;
Invention main points of the present invention are except having the supporting at the output sleeve afterbody; at its head supporting device is set also; not necessarily being confined to several shown in the accompanying drawing embodiment as for the concrete structure of supporting device, can be other various rational structure, all within protection scope of the present invention.
Claims (5)
1. modified electric screw driver, comprise housing and be installed on housing interior motor, gear mechanism, output shaft and output sleeve, the afterbody of output sleeve has single thrust bearing supporting, it is characterized in that also being provided with supporting device between described output sleeve head and the housing head.
2. electric screw driver as claimed in claim 1 is characterized in that described supporting device is output sleeve head and the spacing ball of housing head by a circle.
3. electric screw driver as claimed in claim 1 is characterized in that described supporting device is a bearing.
4. electric screw driver as claimed in claim 1 is characterized in that described supporting device is a spacing ring.
5. as the described electric screw driver of arbitrary claim in the claim 1 to 4, it is characterized in that being provided with a flange, make described supporting device spacing better at the position of the corresponding described supporting device of described output sleeve head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99113655 CN1236693A (en) | 1999-04-22 | 1999-04-22 | Improved electric screw driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99113655 CN1236693A (en) | 1999-04-22 | 1999-04-22 | Improved electric screw driver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1236693A true CN1236693A (en) | 1999-12-01 |
Family
ID=5276821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99113655 Pending CN1236693A (en) | 1999-04-22 | 1999-04-22 | Improved electric screw driver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1236693A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103586818A (en) * | 2013-10-23 | 2014-02-19 | 舟山市派德龙科技有限公司 | Stabilizing structure of tool bar of automatic screwdriver |
-
1999
- 1999-04-22 CN CN 99113655 patent/CN1236693A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103586818A (en) * | 2013-10-23 | 2014-02-19 | 舟山市派德龙科技有限公司 | Stabilizing structure of tool bar of automatic screwdriver |
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Legal Events
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|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| REG | Reference to a national code |
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