CN202716198U - Hand-held screwdriver - Google Patents
Hand-held screwdriver Download PDFInfo
- Publication number
- CN202716198U CN202716198U CN 201220245285 CN201220245285U CN202716198U CN 202716198 U CN202716198 U CN 202716198U CN 201220245285 CN201220245285 CN 201220245285 CN 201220245285 U CN201220245285 U CN 201220245285U CN 202716198 U CN202716198 U CN 202716198U
- Authority
- CN
- China
- Prior art keywords
- shell
- screwdriver
- tooth bar
- freewheel clutch
- shaft
- 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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- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The utility model provides a hand-held screwdriver which comprises an outer shell; an overrunning clutch (8) is arranged in the outer shell; a rack (3) is inserted into the outer shell and is toe-jointed with a gear (7) on the overrunning clutch (8); a screwdriver shaft is inserted on the overrunning clutch (8); and both ends of the screwdriver shaft extend out of the outer shell. The screwdriver is in pure mechanical transmission, so that the manufacturing cost can be reduced while a screwdriver head quickly rotates.
Description
Technical field
The utility model belongs to and relates to the hardware ﹠ tools field, particularly relates to a kind of screwdriver.
Background technology
Screw and screwdriver are described as maximum gizmo, appear at the every aspect of life, for people's life brought greatly convenient.Along with social development, household electrical appliances are also more and more universal.Household electrical appliances have used a little minor issues of unavoidable appearance of a specified duration, simply repair technical ability and are known by most people.This gizmo of screwdriver indispensable instrument of family that also just gets married.Since being invented the till now existing centuries, really perform meritorious deeds never to be obliterated.Though the normal screws cutter is cheap. durable, use clumsiness, efficient is low.Do not satisfied the productive life rhythm that instantly constantly accelerates.Existing electronic, the fast high efficiency of pneumatic screw driver speed, but expensive, and need to connect electric wire or air pump during work is used loaded down with trivial detailsly and restricted, dangerous, is only applicable to factory and professional repair shop, is difficult to serve the general public.And Universal-purpose screwdriver has increased the cutter head of different size, has expanded the scope of application, but similar with the normal screws cutter when using, operating efficiency is not high.
Summary of the invention
Technical problem to be solved in the utility model is: a kind of hand held screwdriver is provided, and this screwdriver adopts pure machine driving, can reduce manufacturing cost in the cutter head quick rotation.
The technical solution adopted in the utility model: the hand held screwdriver comprises shell, is provided with freewheel clutch in the shell, tooth bar insert shell and with freewheel clutch on gear toe joint mutually, be inserted with screwdriver shaft on the freewheel clutch, shell is stretched out at the two ends of screwdriver shaft.
Described screwdriver, shell comprise fore shell and back cover, connect by screw between fore shell and the back cover.
Described screwdriver also is provided with spring between tooth bar and the shell.
Described screwdriver, screwdriver shaft comprise turning cylinder and cutter head, and turning cylinder inserts freewheel clutch, and turning cylinder also socket-connects by adapter sleeve and cutter head.
The both sides of stretching out near screwdriver shaft in the described screwdriver, shell respectively are provided with a groove, are provided with bearing in the groove, and screwdriver shaft passes bearing.
Described screwdriver, the strip end of tooth bar inserts shell by the groove hole, the distolateral H-shaped step that is provided with of strip of close tooth bar in the shell.
The positive beneficial effect that the utility model has:
Advantage one: use laborsaving.Wrist twisting action when finger is mediated the old-fashioned screwdriver use of action replacement.The cooperation of rack and pinion is converted into the tooth bar horizontal movement rotation of axle.Exempted unnecessary complicated action.
Advantage two: action is succinct.Utilize freewheel clutch single-direction transmission principle, after cutter head inserts screw, only need back and forth to mediate action, need not extract cutter head, disposable finishing the work.
Three: one axle one-directional rotation of advantage, parbuckle screw is neglected neither.The rotational axis direction that is driven among the design is unique, axle two ends direction of rotation when utilizing axle to rotate, and exchange cutter head installation site just can solve respectively the problem of parbuckle screw.
Advantage four: can lay the different model cutter head.Drawn the advantage of Universal-purpose screwdriver, the scope of application is wide, has strengthened the usage range of holding the hand held screwdriver.
Advantage five: volume is small and exquisite.Be equivalent to the regular handset size, do not have electronic. the heaviness of pneumatic screw driver, can be not too small as the normal screws cutter yet.Made things convenient for and used and deposit.
In a word, operational advantages electronic, pneumatic screw driver that the utility model is drawn adopts pure machine driving, energy-conserving and environment-protective.The utility model can be accelerated the screwdriver operating efficiency, and cost is lower, and is safe and convenient to use, is applicable to repair the common household electrical appliance such as television set, computer, flashlight, electric fan.The circulation grip of the utility model by hand converts rectilinear motion to and rotatablely moves, band dynamic cutter head one-directional rotation; And cutter head can turn down always, and having twisted a circle unlike the normal screws cutter needs cutter head extracted and connecting.
Description of drawings
Fig. 1 is right view of the present utility model.
Fig. 2 is front view of the present utility model.
Fig. 3 is the enclosure component diagram.
Fig. 4 is the back cover front view.
Fig. 5 is the back cover left view.
Fig. 6 is the back cover top view.
Among the figure, 1: fore shell; 2: back cover; 3: tooth bar; 4: spring; 5: bearing; 6: turning cylinder; 7: gear; 8: freewheel clutch; 9: adapter sleeve; 10: cutter head; 11: groove; 12:h shape step; 13: the groove hole; 14: screw seat.
The specific embodiment
Shown in Fig. 1-6, the hand held screwdriver comprises shell, is provided with freewheel clutch 8 in the shell, tooth bar 3 insert shells and with freewheel clutch 8 on gear 7 toe joint mutually, be inserted with screwdriver shaft on the freewheel clutch 8, screwdriver shaft stretches out shell.Shell comprises fore shell 1 and back cover 2, and the screw seat 14 that passes on it by screw between fore shell 1 and the back cover 2 connects.Also be provided with spring 4 between tooth bar 7 and the shell.Screwdriver shaft comprises turning cylinder 6 and cutter head 10, and turning cylinder 6 inserts freewheel clutch 8, and turning cylinder 6 also socket-connects by adapter sleeve 9 and cutter head 10.The both sides of stretching out near screwdriver shaft in the shell respectively are provided with a groove 11, are provided with bearing 5 in the groove, and screwdriver shaft 6 passes bearing 5.The strip end of tooth bar 3 inserts shell by groove hole 13, the distolateral H-shaped step 12 that is provided with of strip of close tooth bar 3 in the shell.
Shell of the present utility model two ends U-shaped groove 11 blocks two rolling bearings 5, and turning cylinder 6 is worked the effect of being fixedly connected with.Two half slot holes 13 of back cover 2 are the tooth bar entrance, 12 tooth bar guide effects of middle two H-shaped steps.
Two directional overrunning clutch 8 among Fig. 3 comprise clutch case, and following clutch has drawn the clutch case on it.Freewheel clutch, claim again mono-directional overrun clutch, it is to rely on its unidirectional locking principle to bring into play fixing and link effect, the direction of transfer of moment is unidirectional, its connection and fixing fully connect original paper and determined by force direction by being attached thereto, when being attached thereto when connecing original paper and being subjected to force direction identical with the locking direction, this original paper namely is fixed or links when being subjected to force direction and locking direction to inverse time, and this original paper namely is released or breaks away from connection; Namely between driving shaft and driven shaft, can only make driven shaft do a direction revolution, have the idle running function in the other direction.The utility model adopts the ball-type freewheel clutch.
Shell of the present utility model for reducing difficulty of processing, alleviates product weight because of complex contour, and the aluminium alloy material is made, by CNC milling machine processing, and with surface finish.Turning cylinder 6 is main stressed part because of it, selects No. 45 steels to do, by numerically controlled lathe, and CNC milling machine processing.Tooth bar 3 is complicated because of profile of tooth, is convenient processing, and the aluminium alloy is made.Utilize the line cutting processing.
Motion process analysis of the present utility model:
1) cooperation of rack and pinion is converted into axle with horizontal movement and rotates.
2) one-way driving mechanism.Mediate tooth bar, the class ratchet that is fixedly connected with gear rotates, and steel ball enters the ratchet boss, is stuck in the iron covering inwall, produces the locking phenomenon.And rotated by iron covering band moving axis.When tooth bar returns, the counter-rotating of class ratchet, steel ball returns the ratchet recesses place, without the locking phenomenon.Therefore realized single-direction transmission.
3) an axle one-directional rotation, parbuckle screw is neglected neither.Two ends direction of rotation when utilizing bar to rotate, exchange cutter head installation direction just can solve respectively the problem of screw tightness.
Using method of the present utility model
1) open the switch that blocks tooth bar on the shell, tooth bar is ejected to outer spring.
2) driver bit is contained in the interface that shell is marked with " tightly " word one end.
3) cutter head vertically is inserted in screw head, holds shell, and finger is inwardly mediated tooth bar
4) kneading is complete, need not to extract cutter head, only need repeat to mediate action.
5) in the time of need loosening the screw a little, cutter head is changed at the shell other end, indicate the interface of " pine " word.Repeat finger and mediate action.
6) finish using, tooth bar is mediated enclosure, promote the switch on the shell, tooth bar is blocked.
Finish a screw and install and to mediate about 10 times by hand, can estimate thus that for general screw hand is mediated tooth bar and can be installed for five to ten times.
Claims (6)
1. hand held screwdriver, it is characterized in that: comprise shell, be provided with freewheel clutch (8) in the shell, tooth bar (3) insert shell and with freewheel clutch (8) on gear (7) toe joint mutually, freewheel clutch is inserted with screwdriver shaft on (8), and shell is stretched out at the two ends of screwdriver shaft.
2. screwdriver according to claim 1, it is characterized in that: shell comprises fore shell (1) and back cover (2), connects by screw between fore shell (1) and the back cover (2).
3. screwdriver according to claim 1 is characterized in that: also be provided with spring (4) between tooth bar (7) and the shell.
4. screwdriver according to claim 1, it is characterized in that: screwdriver shaft comprises turning cylinder (6) and cutter head (10), and turning cylinder (6) inserts freewheel clutch (8), and turning cylinder (6) also socket-connects by adapter sleeve (9) and cutter head (10).
5. screwdriver according to claim 1 is characterized in that: the both sides of stretching out near screwdriver shaft in the shell respectively are provided with a groove (11), are provided with bearing (5) in the groove, and screwdriver shaft (6) passes bearing (5).
6. screwdriver according to claim 1 is characterized in that: the strip end of tooth bar (3) inserts shell by groove hole (13), in the shell near the distolateral H-shaped step (12) that is provided with of strip of tooth bar (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220245285 CN202716198U (en) | 2012-05-29 | 2012-05-29 | Hand-held screwdriver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220245285 CN202716198U (en) | 2012-05-29 | 2012-05-29 | Hand-held screwdriver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202716198U true CN202716198U (en) | 2013-02-06 |
Family
ID=47618036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220245285 Expired - Fee Related CN202716198U (en) | 2012-05-29 | 2012-05-29 | Hand-held screwdriver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202716198U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103753463A (en) * | 2014-01-03 | 2014-04-30 | 河南科技大学 | Grip drive type screwdriver |
| CN104339296A (en) * | 2013-07-24 | 2015-02-11 | 苏州宝时得电动工具有限公司 | Ratchet wheel screwdriver |
| CN111660239A (en) * | 2020-04-27 | 2020-09-15 | 湖州职业技术学院 | Magnet type deformed head screwdriver bit and screwdriver |
-
2012
- 2012-05-29 CN CN 201220245285 patent/CN202716198U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104339296A (en) * | 2013-07-24 | 2015-02-11 | 苏州宝时得电动工具有限公司 | Ratchet wheel screwdriver |
| CN104339296B (en) * | 2013-07-24 | 2016-04-27 | 苏州宝时得电动工具有限公司 | Ratchet screw driver |
| CN103753463A (en) * | 2014-01-03 | 2014-04-30 | 河南科技大学 | Grip drive type screwdriver |
| CN103753463B (en) * | 2014-01-03 | 2016-05-18 | 河南科技大学 | Hold drive-type screwdriver |
| CN111660239A (en) * | 2020-04-27 | 2020-09-15 | 湖州职业技术学院 | Magnet type deformed head screwdriver bit and screwdriver |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130206 Termination date: 20130529 |