CN104416520B - Electric screwdriver - Google Patents
Electric screwdriver Download PDFInfo
- Publication number
- CN104416520B CN104416520B CN201310362568.3A CN201310362568A CN104416520B CN 104416520 B CN104416520 B CN 104416520B CN 201310362568 A CN201310362568 A CN 201310362568A CN 104416520 B CN104416520 B CN 104416520B
- Authority
- CN
- China
- Prior art keywords
- pin bushing
- guide pin
- electric screwdriver
- chuck
- axle sleeve
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/02—Arrangements for handling screws or nuts
- B25B23/08—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation
- B25B23/10—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means
- B25B23/105—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means the gripping device being an integral part of the driving bit
Abstract
The open a kind of electric screwdriver of the present invention, the motor including shell, being arranged in described shell and the guide shaft rotated by the driving of described motor.What described electric screwdriver also included being connected to described guide shaft holds up screw mechanism, described in hold up screw mechanism to include for helping the chuck of screw, driving what described chuck clamped to drive assembly and the elastic component driving described chuck to reset.When twisting screw, driving Component driver chuck pinching screw, it is not necessary to hand steered screw, singlehanded use electric screwdriver can complete to twist screw, easy to use, will not deviate, and more will not injure finger, and safety is ensured.
Description
Technical field
The present invention relates to electric tool, particularly relate to a kind of electric screwdriver.
Background technology
Electric screwdriver is for by screw-driving to workpiece, its generally include shell, the motor being arranged in shell,
The planetary reduction gear being connected with motor and the screwdriver being connected with planetary reduction gear.During operation, turning of motor
Square is delivered to screwdriver by planetary reduction gear, and screwdriver rotates, driver bit and head of screw slot fit, thus screw
Tightened rapidly.But, when screw-driving to workpiece (such as hard wood, sheet metal, plastic-steel, decoration Os Draconis etc.) is upper, need
With the finger locating screw of a hands, then operate screwdriver with another hands, very inconvenient during use, and be susceptible to partially
From, not do a good job and can injure finger, safety is difficult to ensure.
Summary of the invention
Based on this, it is provided that the electric screwdriver that a kind of operation is safer.
A kind of electric screwdriver, the motor including shell, being arranged in described shell and being driven by described motor rotates
Guide shaft, what described electric screwdriver also included being connected to described guide shaft holds up screw mechanism, described in hold up screw mechanism to include for holding up
Hold the chuck of screw, the driving assembly driving described chuck to clamp and the elastic component driving described chuck to reset.
Wherein in an embodiment, described chuck is a pair arm mutually arranged, and described elastic component is torsion spring, each
One end of arm is articulated in described torsion spring, and the other end is provided with the clamping part of clamp screws.
Wherein in an embodiment, described driving assembly includes the axle sleeve being sheathed on described guide shaft, overlaps slidably
The first guide pin bushing of being located on described axle sleeve and be sheathed on the second guide pin bushing on described first guide pin bushing slidably, described guide shaft can be slided
Dynamic is arranged in described axle sleeve, and described chuck and elastic component are installed on described second guide pin bushing, and described first guide pin bushing is arranged
There are the protuberance driving the clamping of described chuck and the stopper protruding out to described chuck front end.
Wherein in an embodiment, it is provided with between described first guide pin bushing and the second guide pin bushing and is set in described first guide pin bushing
On the first stage clip, drive during described first stage clip elastic reset described first guide pin bushing protuberance extrude described chuck.
Wherein in an embodiment, it is provided with described first guide pin bushing snap close between described first guide pin bushing and axle sleeve to institute
Stating the snap close piece of axle sleeve, after described first guide pin bushing is locked, described first stage clip is compressed.
Wherein in an embodiment, described snap close piece is the steel ball being arranged at described axle sleeve, and described first guide pin bushing sets
There is the clamping part coordinated with described steel ball.
Wherein in an embodiment, described guide shaft is provided with groove, when described steel ball falls into described groove, described
One guide pin bushing unlocks, and when described steel ball departs from described groove, described first guide pin bushing is snapped.
Wherein in an embodiment, it is provided with, between described second guide pin bushing and axle sleeve, second be set on described axle sleeve
Stage clip, is provided with the 3rd stage clip being set on described guide shaft between described guide shaft and described axle sleeve.
Wherein in an embodiment, described axle sleeve is provided with the first anti-wear gasket coordinated with described second stage clip, institute
State and on guide shaft, be provided with the second anti-wear gasket coordinated with described 3rd stage clip.
Wherein in an embodiment, one end of described guide shaft is connected with described deceleration system, the other end of described guide shaft
It is provided with the installation portion that can install various screwdriver bit.
Above-mentioned electric screwdriver, when twisting screw, drives Component driver chuck pinching screw, it is not necessary to hand steered screw, singlehanded
Use electric screwdriver can complete to twist screw, easy to use, will not deviate, more will not injure finger, safety is protected
Barrier.
Accompanying drawing explanation
Fig. 1 is the structural representation of present embodiment electric screwdriver；
Fig. 2 is the Fig. 1 cross-sectional schematic along line A-A；
Fig. 3 is partial cutaway view schematic shown in Fig. 2；
Fig. 4 is partial cutaway view schematic when just unlocking of the steel ball shown in Fig. 3；
Fig. 5 is the partial cutaway view schematic during clamping of chuck shown in Fig. 4；
Fig. 6 is the structural representation of present embodiment electric screwdriver guide shaft；
Fig. 7 is the structural representation of present embodiment electric screwdriver the first guide pin bushing；
Fig. 8 is the structural representation of present embodiment electric screwdriver the second guide pin bushing；
Fig. 9 is the structural representation of present embodiment electric screwdriver axle sleeve；
Figure 10-Figure 16 is the signal that work process when securing the screw on workpiece criticized by present embodiment battery type screw
Figure.
Electric screwdriver, 100 handles, 110 cylindrical body, 120
Motor, 130 deceleration systems, 140 guide shafts, 150
Installation portion, 151 stoppers, 1642 grooves, 152
Second anti-attrition part, 154 hold up screw mechanism, 160 chucks, and 161
Clamping part, 1611 elastic components, 162 axle sleeves, 163
First anti-wear gasket, 1,632 first guide pin bushings, 164 protuberances, 1641
Clamping part, 1,642 second guide pin bushings, 165 first stage clips, 166
Snap close piece, 164 second stage clips, 168 the 3rd stage clips, 169
Screwdriver bit, 200 sunk screws, 300 workpiece, 400
Axis, X perforation 1631
Detailed description of the invention
Please join Fig. 1 and Fig. 2, present embodiment discloses a kind of electric screwdriver 100, it is preferred that for battery type screwdriver, whole
Body is the structure of leader's gun-type and has shell.Shell includes handle 110 and is connected to the cylindrical body 120 of handle 110.Electronic
Screwdriver 100 also includes the battery (not shown) being arranged in handle 110, the motor 130 being arranged in cylindrical body 120 and horse
The deceleration system 140 reaching 130 connections and the guide shaft 150 being connected with deceleration system 140.Handle 110 is used for when operator uses
Grip, it is additionally provided with switch 111, control the Push And Release of electric screwdriver 100.Battery is for providing the electricity of whole part
Source.Deceleration system 140 is preferably planetary gear reducing mechanism.One end of guide shaft 150 is connected with deceleration system 150, guide shaft 150
The other end is provided with can be installed the installation portion 151(of various screwdriver bit 200 and please join Fig. 3).Push switch 111, motor 130 starts and leads to
The deceleration crossing deceleration system 140 is delivered to guide shaft 150, causes guide shaft 150 to pass through screwdriver bit 200 by various screw-drivings to workpiece
(such as hard wood, sheet metal, plastic-steel, decoration Os Draconis etc.).
What electric screwdriver 100 also included being connected to guide shaft 150 holds up screw mechanism 160, hold up screw mechanism 160 include for
Help the chuck 161 of screw, drive the elastic component 162 driving assembly and driving chuck 161 to reset of chuck 161 clamping.Twist spiral shell
During nail, driving Component driver chuck 161 pinching screw, it is not necessary to hand steered screw, singlehanded use electric screwdriver 100 can complete
Twist screw, easy to use, will not deviate, more will not injure finger, safety is ensured.
Please join Fig. 3 to Fig. 5, chuck 161 is a pair arm mutually arranged, and elastic component 162 is torsion spring.One end pivot of arm
Being connected to torsion spring, the other end is provided with the clamping part 1611 of clamp screws.Drive assembly effect arm, cause arm to clamp, clamping
Portion 1611 clamp screws, after driving assembly not act on arm, torsion spring elastic return, arm opens again.
Please join Fig. 6 to Fig. 9, drive assembly to include the axle sleeve 163 being sheathed on guide shaft 150, be sheathed on axle sleeve slidably
The first guide pin bushing 164 on 163 and the second guide pin bushing 165 being sheathed on slidably on the first guide pin bushing 164.Guide shaft 150 is slidably
Being arranged in axle sleeve 163, chuck 161 and elastic component 162 are installed on the second guide pin bushing 165.It is provided with driving on first guide pin bushing 164
The protuberance 1641 of chuck 161 clamping and protrude out to the stopper 1642 of chuck 161 front end.First guide pin bushing 164 is relative to the second guide pin bushing
During 165 slip, protuberance 1641 can be driven chuck 161 arm, be shunk by oblique top, and contractility pinching screw 300 realizes automatically holding up
Screw function.It is provided with, between first guide pin bushing 164 and the second guide pin bushing 165, the first stage clip 166 being set on the first guide pin bushing 164,
The protuberance 1641 driving the first guide pin bushing 164 during the first stage clip 166 elastic reset extrudes chuck 161.
It is provided with the snap close piece 167 of the first guide pin bushing 164 snap close to axle sleeve 163 between first guide pin bushing 164 and axle sleeve 163,
After first guide pin bushing 164 is locked, the first stage clip 166 is compressed.It is provided with between second guide pin bushing 165 and axle sleeve 163 and is set in axle sleeve
The second stage clip 168 on 163, the second stage clip 168 is compressed and in the second stage clip 168 elastic return after moving by the second guide pin bushing 165
Time the second guide pin bushing 165 is resetted.The 3rd stage clip 169 being set on guide shaft 150 it is provided with between guide shaft 150 and axle sleeve 163, can
Guide shaft 150 is helped to reset after moving.The first anti-wear gasket 1632 coordinated with the second stage clip it is provided with, to protect axle on axle sleeve 163
Set 163 and the second stage clip 168.The second anti-wear gasket 153 coordinated with the 3rd stage clip 169 it is provided with, to protect guide shaft on guide shaft 150
150 and the 3rd stage clip 169.
Specifically, axle sleeve 163 offers perforation 1631, and snap close piece 167 is the steel ball being arranged in perforation 1631.Corresponding
, the first guide pin bushing 164 is provided with the clamping part 1643 coordinated with steel ball.Being provided with groove 152 on guide shaft 150, steel ball falls into recessed
During groove 152, the first guide pin bushing 164 unlocks, and when steel ball departs from groove 152, the first guide pin bushing 164 is snapped.In detail, original state
Time, steel ball coordinates with clamping part 1642, and by the first guide pin bushing 164 snap close in axle sleeve 163, now the first stage clip 166 is compressed in
Between one guide pin bushing 164 and the second guide pin bushing 165, and the second guide pin bushing 165 is compressed by the second stage clip 168, and the elastic force of the second stage clip 168
More than the elastic force of the first stage clip 166, so the first stage clip 166 is compressed and the second guide pin bushing 165 cannot be driven to move.Because of arm not
Stress, therefore chuck 161 is in the state opened.When guide shaft 150 along axis X towards deceleration system 140 namely after being moved rearwards by, steel
Pearl is fallen in the groove 152 of guide shaft 150 by perforation 1631, and steel ball unlocks with clamping part 1642, and the first guide pin bushing 164 is released
After, the first stage clip 166 elastic return and then driving the first guide pin bushing 164 move forward, and make protuberance 1641 drive arm, cause folder
161 shrink clamping.When guide shaft 150 moves forward relative to axle sleeve 163, steel ball can depart from groove 152 and and buckle again
Portion 1642 coordinates, and can recover to original state.
Please join Figure 10 to Figure 16, with by sunk screw 300(it is, of course, also possible to be other screws) be tightened to workpiece 400(such as
Plank) upper as a example by, the work process of electric screwdriver 100 is described.
Please join Figure 10, sunk screw 300 does not installs on electric screwdriver 100.Screw mechanism 160 is held up to be in original state,
Chuck 161 is clamping, and steel ball is in snap close state, and the first stage clip 166 is in compressive state, the second stage clip 168 and the 3rd stage clip
169 are in release conditions.
Please join Figure 11, manually hold the screwdriver bit 200 that sunk screw 300 pushes up on guide shaft 150, guide shaft 150 is retreated 1.5 millimeters,
Steel ball unlocks in the groove 152 falling into guide shaft 150.
Please join Figure 12, after steel ball unlocks, the first stage clip 166 precompression release promotes the first guide pin bushing 164 to slide, protuberance 1641
Driving chuck tightens up, and clamping part 1611 clamps sunk screw 300.
Please join Figure 13, advance and squeeze into sunk screw 300 to workpiece 400, stopper 1642 is compressed rear first guide pin bushing 164 backward
Mobile, and make the first stage clip 166 compress, chuck 161 synchronizes to open.First stage clip 166 is compressed to the second guide pin bushing 165, and second leads
Set 165 is moved rearwards by making the second stage clip 168 be compressed.
Please join Figure 14, be sunk by sunk screw 300 end face into workpiece 400, guide shaft 150 formation of sliding reaches at utmost.The
Three stage clips 169 are compressed.
Please join Figure 15, the first guide pin bushing 164 leaves workpiece 400 surface, the 3rd stage clip 169 precompression release, promotes guide shaft 150
Reset the 1.5 millimeters of extrusion steel balls that advance.
Please join Figure 16, the second stage clip 168 release promotes the second guide pin bushing 165 to slide, and the first stage clip 166 is compressed, and holds up screw
Mechanism 160 is returned to original state.
Above action is first use circulation.Utilization holds up screw mechanism 160 can liberate another hands, and one hand can be by various
Screw is screwed onto on various workpiece, safe ready.
Embodiment described above only have expressed the several embodiments of the present invention, and it describes more concrete and detailed, but also
Therefore the restriction to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that, for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, it is also possible to make some deformation and improvement, these broadly fall into the guarantor of the present invention
Protect scope.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (9)
1. an electric screwdriver, the motor including shell, being arranged in described shell and leading by the driving rotation of described motor
Axle, it is characterised in that what described electric screwdriver also included being connected to described guide shaft holds up screw mechanism, described in hold up screw mechanism bag
Include for helping the chuck of screw, the driving assembly driving described chuck to clamp and the elastic component driving described chuck to reset, institute
State driving assembly include the axle sleeve being sheathed on described guide shaft, the first guide pin bushing being sheathed on described axle sleeve slidably and can slide
Being sheathed on the second guide pin bushing on described first guide pin bushing, described guide shaft is slidably arranged in described axle sleeve, described chuck dynamicly
It is installed on described second guide pin bushing with elastic component, described first guide pin bushing is provided with and drives the protuberance of described chuck clamping and protrude out
Stopper to described chuck front end.
Electric screwdriver the most according to claim 1, it is characterised in that described chuck is a pair arm mutually arranged,
Described elastic component is torsion spring, and one end of each arm is articulated in described torsion spring, and the other end is provided with the clamping part of clamp screws.
Electric screwdriver the most according to claim 1, it is characterised in that arrange between described first guide pin bushing and the second guide pin bushing
There is the first stage clip being set on described first guide pin bushing, during described first stage clip elastic reset, drive the protuberance of described first guide pin bushing
Extrude described chuck.
Electric screwdriver the most according to claim 3, it is characterised in that be provided with between described first guide pin bushing and axle sleeve by
The snap close piece of described first guide pin bushing snap close extremely described axle sleeve, after described first guide pin bushing is locked, described first stage clip is compressed.
Electric screwdriver the most according to claim 4, it is characterised in that be provided with perforation, described snap close on described axle sleeve
Part is the steel ball being arranged in described perforation, and described first guide pin bushing is provided with the clamping part coordinated with described steel ball.
Electric screwdriver the most according to claim 5, it is characterised in that be provided with groove, described steel ball on described guide shaft
When falling into described groove, described first guide pin bushing unlocks, and when described steel ball departs from described groove, described first guide pin bushing is snapped.
Electric screwdriver the most according to claim 5, it is characterised in that be provided with set between described second guide pin bushing and axle sleeve
The second stage clip being located on described axle sleeve, is provided with the 3rd pressure being set on described guide shaft between described guide shaft and described axle sleeve
Spring.
Electric screwdriver the most according to claim 7, it is characterised in that be provided with on described axle sleeve and described second stage clip
The first anti-wear gasket coordinated, described guide shaft is provided with the second anti-wear gasket coordinated with described 3rd stage clip.
Electric screwdriver the most according to claim 1, it is characterised in that described electric screwdriver also includes and described motor
The deceleration system connected, one end of described guide shaft is connected with described deceleration system, and the other end of described guide shaft is provided with can be installed
The installation portion of various screwdriver bits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310362568.3A CN104416520B (en) | 2013-08-19 | 2013-08-19 | Electric screwdriver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310362568.3A CN104416520B (en) | 2013-08-19 | 2013-08-19 | Electric screwdriver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104416520A CN104416520A (en) | 2015-03-18 |
| CN104416520B true CN104416520B (en) | 2016-11-23 |
Family
ID=52967213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310362568.3A Active CN104416520B (en) | 2013-08-19 | 2013-08-19 | Electric screwdriver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104416520B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108237498B (en) * | 2016-12-27 | 2024-04-09 | 苏州宝时得电动工具有限公司 | Clamping head |
| CN107553385B (en) * | 2017-10-18 | 2023-03-24 | 贵州佛施特电力配套有限公司 | Screw clamp holder |
| CN109159068B (en) * | 2018-10-30 | 2020-05-22 | 淮阴工学院 | Bolt tightening unit for gun bolt tightening device |
| CN112571361A (en) * | 2020-12-21 | 2021-03-30 | 王翔 | Screw drapes over one's shoulders head self-lock device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3965950A (en) * | 1975-03-20 | 1976-06-29 | Macdonald Murdo A | Fastener driver and fastener holding nosepiece |
| JP3632567B2 (en) * | 2000-06-19 | 2005-03-23 | 株式会社デンソー | Automatic screw tightening device |
| CN201227800Y (en) * | 2008-06-03 | 2009-04-29 | 刘安庭 | Turning tool with function of holding element |
| CN102950567B (en) * | 2011-08-20 | 2015-07-01 | 苏州宝时得电动工具有限公司 | Screw support device and screw tool assembled with screw support device |
| KR101304284B1 (en) * | 2011-11-15 | 2013-09-11 | 박창배 | A Motor-driven Driver |
| CN202878214U (en) * | 2012-03-12 | 2013-04-17 | 孟祥甫 | Practical clamp nozzle of hand-held automatic locking screw machine |
-
2013
- 2013-08-19 CN CN201310362568.3A patent/CN104416520B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104416520A (en) | 2015-03-18 |
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