CN2683290Y - Electric tool output shaft locking device - Google Patents
Electric tool output shaft locking device Download PDFInfo
- Publication number
- CN2683290Y CN2683290Y CN 200420047707 CN200420047707U CN2683290Y CN 2683290 Y CN2683290 Y CN 2683290Y CN 200420047707 CN200420047707 CN 200420047707 CN 200420047707 U CN200420047707 U CN 200420047707U CN 2683290 Y CN2683290 Y CN 2683290Y
- Authority
- CN
- China
- Prior art keywords
- output shaft
- electric tool
- locking device
- joint portion
- locking ring
- 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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Abstract
The utility model relates to an electric tool output shaft locking device which includes a fixed ring, a dynamic force disk, a locked ring and a plurality of lock pins. When an output shaft is acted on forward, the dynamic force disk receives the force and synchronously rotates the output shaft; when the output shaft is acted on reversely, the lock pins arranged between the dynamic force disk and the fixed ring are pulled to the locked ring so as to lock the output shaft for manual operating. The locking device of the utility model is easy to assemble and avoids the disadvantages of easy to upend and uneasy to assemble when assembling in existing device; meanwhile, because members of the forward force receiving and reversed force receiving are different, damage problems caused by concentrated force application on the same member in prior art can be avoided; furthermore, the shape of the output shaft is simple, which is favorable for manufacturing and reducing manufacturing cost.
Description
Technical field
The utility model is the locking device about a kind of main shaft, particularly about a kind of locking device that is applied to lock the electric tool output shaft.
Background technology
Like the doing it yourself people that assembles, keep in repair can't prepare the electric tool or the hand-operated tools of many special uses as the professional, only can prepare some simple hand-operated tools or knockdown electric tool; Tool manufacturer is developed various knockdown hand-operated tools or electric tool for adapting to the demand in this market.
With revolving electric tool is example, except being used for electric drill, also can be used as electric screw driver, as long as there is suitable chuck to be used to clamp drill bit or screwdriver, then this type of rotating electric tool just can have double duty.
The power resources of electric tool are electric power, just present, the useful plug of the power supply mode of electric tool directly and plug-in and rechargeable battery powered rechargeable two kinds of joining of civil power, these two kinds of different power supply modes in the use separately advantage all arranged, plug-in electric tool is owing to use civil power, as long as under the situation that machine can bear, almost can use continuously and the problem of power interruptions can not occur, but because necessary plug-in, then may must use extended line because of using the place can't obtain civil power, therefore use inconveniently, and have power line to impede and cause restriction in the use, the carrying out that hinders one's work; Though the impeding and limiting of rechargeable electric tool non-transformer line, make it that higher mobility be arranged, can under any situation, work, but can't continuously work because of using storage batteries, when being reduced in the time of can't working, electric energy then must charge, yet the time of charging is longer again, therefore influences the carrying out of work, so on using its inconvenience is arranged also.
With regard to the convenience of using, rechargeable electric tool is obviously many than plug-in convenience, but under the low situation that can't run well or can't turn round fully of electric energy, uses if can convert hand-operated tools to, then can solve the task of top priority; And existing electric tool is directly to drive anchor clamps by motor (motor) by reducing gear to rotate, if electric tool is an electric screw driver, then the screwdriver because of motor and anchor clamps end is direct transmission, when the screwdriver end directly is used for rotation screw, promptly cause the active force of counter-rotating for the output shaft of jockey, make motor therefore can't directly use along with rotation as hand-operated tools; For this reason, locking mechanism of output shaft installing at reducing gear, the motor that makes electric tool by this locking mechanism forward outputting power rotates to drive output shaft, and during this output shaft counter-rotating application of force, then this output shaft is locked and can't rotate, and so can use as hand-operated tools by the output shaft lock.Patent announcement No. 443165 utility model patent in Taiwan installed locking device to be transformed into the structure of hand-operated tools where necessary, shown in Fig. 3 to Fig. 4 B on the electric tool output shaft.
As shown in the figure, the Taiwan patent announcement proposes a kind of locking device of electric tool output shaft for No. 443165, the locking device of this electric tool output shaft is to fix a retainer ring 21 in casing, the power plate 22 that suit can rotate flexibly in this retainer ring 21, and the output end face of this power plate 22 is provided with Plug Division 221 cylindraceous.The periphery of this Plug Division 221 is provided with a plurality of flutings 222, and is equipped with a plurality of fins 223 on the aperture surface of Plug Division 221, the output shaft 23 of then pegging graft in this Plug Division 221.Be provided with a plurality of grooves 231 on the link of output shaft 23 to the fin 223 on should Plug Division 221 inner faces, this power plate 22 can be inserted with output shaft 23 covers to be connected, and the input of this power plate 22 connects reducing gear and electro-motor (figure is mark not), making this power plate 22 can drive output shaft 23 rotates with outputting power, shown in Fig. 4 A.
Between the groove on the inserted terminal of output shaft 23 231, form arcuation face 232, and between the arcuation face 232 of the inner face of retainer ring 21 and output shaft 23, the direction that is positioned at the fluting 222 of power plate 22 and parallel output shafts 23 is incorporated with at least two and rolls pin 24, and groove 231 width on above-mentioned output shaft 23 links are slightly larger than the fin 223 in the Plug Division 221 of power plate 22.When these output shaft 23 reverse application of forces were rotated, this output shaft 23 is forward or reverse deflection slightly; And when output shaft 23 deflections, the arcuation face 232 of this output shaft 23 is that pin 24 is rolled in ejection, makes to roll pin 24 and push against on the inner ring surface of fixed retainer ring 21.Like this, shown in Fig. 4 B, this output shaft 23 is promptly locked fully and can't rotate, and converts hand-operated tools to use under the situation of electro-motor unregulated power supply, and electric screw driver promptly converts the screwdriver of manual usefulness to like this.
Yet, locking output shaft 23 rolls pin 24 for being inserted in the fluting 222 of power plate 22 during this backwards rotation, put into fluting 222 so when assembling, will roll pin 24 earlier, and then output shaft 23 is inserted in the Plug Division 221 of power plate 22, and the groove 231 of output shaft 23 is enclosed within on the fin 223 in the Plug Division 221 of power plate 22; And when output shaft 23 covers are inserted in the Plug Division 221 of power plate 22, there is no the structure of any back-up roller pin 24 in this fluting 222, and in the space of pin 24 is rolled in placement, there is one side to be open state, in each fluting 222, pack into two again and roll pin 24, make and roll pin 24 and be easy to generate the situation of toppling over, thereby be difficult to assembling.
Simultaneously, the Plug Division 221 of this power plate 22 is provided with a plurality of flutings 222, make Plug Division 221 only bear the counteractive torsion of output shaft 23 inserted terminals, this power plate 22 must be born simultaneously forward reach the strength of backward-acting in this output shaft 23 by the lamellar body of a plurality of its shapes of formation.So this kind prior art makes driving force concentrate on the same member such as power plate 22, make member bear excessive torsion easily and impaired.
In addition, be useful on the groove 231 of connection on the inserted terminal of this output shaft 23 and be used for the arcuation face 232 that pin 24 is rolled in ejection, make the global shape of output shaft 23 too complicated, thereby increased the difficulty in the processing and manufacturing, thereby improve manufacturing cost.
The utility model content
For overcoming the shortcoming of above-mentioned prior art, the locking device that main purpose of the present utility model is to provide a kind of output shaft of electric tool can disperse driving force.
Another purpose of the present utility model is to provide a kind of locking device of electric tool output shaft, can increase the assembling convenience.
A purpose more of the present utility model is to provide a kind of locking device of output shaft of electric tool, but simplified structure is to reduce manufacturing cost.
For reaching above-mentioned and other purpose, the locking device of electric tool output shaft of the present utility model is used to lock the output shaft of electric tool, and this locking device comprises: retainer ring, power plate, locking ring and a plurality of lock pin.
This locking ring has for first joint portion in conjunction with this output shaft, then is formed with ejection part in this locking ring outside.Wherein, this ejection part is made of cam surface connected to one another and flat face.
This power plate has should first joint portion forming and be used for forming with the restriction portion of sheathed this locking ring of side within it in conjunction with second joint portion of this output shaft and a plurality of interval, and adjacent spacing between respectively should restriction portion is greater than the external diameter of this lock pin.Wherein, first joint portion of this locking ring to the distance of this flat face less than first joint portion of this locking ring distance to this cam surface so that when the reverse stressed rotation of this output shaft, make this locking ring earlier deflection rotate to lock this output shaft.
This retainer ring has the 3rd joint portion that is combined in this restriction portion outside.Respectively this lock pin then is plugged on respectively between this power plate and this retainer ring and with respectively should restriction portion spaced apart.
When the stressed rotation of this power plate, this power plate forward acts on this output shaft and rotates synchronously; And when the reverse stressed rotation of this output shaft, then drive this locking ring deflection by this output shaft, respectively this lock pin backup contact is to respectively should restriction portion, thereby limit the respectively displacement of this lock pin, and make respectively this this locking ring of lock pin stopper, lock this output shaft by this locking ring, to carry out manual operation.
Because assembling the time is to put between two adjacent restriction portions of inboard, the power plate of retainer ring the direct plug-in mounting of this lock pin and the enclosure space of the formation that ejection part encloses in the locking ring outside, so the situation that lock pin is toppled over can avoid assembling the time.
In sum, the utility model assembling has avoided existing apparatus to topple over and not easy-to-assemble shortcoming easily.Simultaneously, forward stressed and reverse stressed member difference can avoid prior art to concentrate the application of force to cause the problem of damage at same member.And the shape of this output shaft is simpler than prior art, more helps processing and manufacturing, reduces manufacturing cost.
Description of drawings
Fig. 1 is the three-dimensional exploded view of the locking device of electric tool output shaft of the present utility model;
Fig. 2 A is the cross-sectional schematic of forward outputting power of the locking device of electric tool output shaft of the present utility model;
Fig. 2 B is the cross-sectional schematic of Inverted Output power of the locking device of electric tool output shaft of the present utility model;
Fig. 3 is the three-dimensional exploded view of the locking device of existing electric tool output shaft;
Fig. 4 A is the cross-sectional schematic of forward outputting power of the locking device of existing electric tool output shaft; And
Fig. 4 B is the cross-sectional schematic of Inverted Output power of the locking device of existing electric tool output shaft.
The specific embodiment
Embodiment
Following examples are to further specify viewpoint of the present utility model, are not to limit category of the present utility model anyways.
See also Fig. 1, the utility model mainly comprises: retainer ring 11, power plate 12, locking ring 13 and a plurality of lock pin 14.Wherein, the locking device of electric tool output shaft of the present utility model be with the locking electric tool main shaft (output shaft 15 shown in present embodiment) be that example describes, because existing electric tool all is an applicable object, and its structure and action principle all do not change, institute thinks becomes apparent feature of the present utility model, will omit with structure and explanation that the utility model has nothing to do.
This retainer ring 11 is installed in the electric tool tooth case (figure is mark not), is fixed member, and the 3rd joint portion 11a such as perforation is arranged on this retainer ring 11, is installed in power plate 12, locking ring 13 and lock pin 14 by the 3rd joint portion 11a.
One side of this power plate 12 connects power gear group (figure is mark), then is equipped with a plurality of restriction 12a of portion on the opposite side, this power plate 12 is limited in by the 12a of the restriction portion outside in the 3rd joint portion 11a of retainer ring 11 rotates.This power plate 12 also has for example second joint portion 12b of D type lockhole, supplies in conjunction with this output shaft 15.
Be the 12a of restriction portion of projection though be formed with four in the present embodiment, still, structure and the quantity of the restriction 12a of portion of the present utility model are not as limit.For example, also can form three, five or more should the 12a of restriction portion, the 12a of this restriction portion can be again such as recess, flange or other equivalent structure.In addition, the structure of this second joint portion 12b is also non-as limit.
This locking ring 13 be sleeved on power plate 12 the 12a of restriction portion around in the space that forms, make this locking ring 13 can be, and the ejection part that is combined with cam surface 13b institute by a plurality of flat face 13a connected to one another arranged on the outer peripheral face of this locking ring 13 at this space intrinsic deflection.This locking ring 13 also has the first joint portion 13c, and this first joint portion 13c can select corresponding this second joint portion 12b and for the structure in conjunction with this output shaft 15, for example D type lockhole.Simultaneously, the first joint portion 13c of this locking ring 13 is to the distance of this flat face 13a, less than the distance of this first joint portion 13c to this cam surface 13b.
Respectively 14 of this lock pins are packed between adjacent two 12a of restriction portion of the inner face 11b, power plate 12 of retainer ring 11 and in the space of the ejection part formation that 13a encloses of locking ring 13, and the distance between adjacent two 12a of restriction portion of this power plate 12 makes this lock pin 14 can be offset rolling greater than the external diameter of lock pin 14.
These output shaft 15 interspersed power plate 12 and locking rings 13, the structure of these output shaft 15 interspersed power plates 12 and locking ring 13 is as described below, but is not as limit.
One end 15a of these output shaft 15 interspersed power plates 12 and locking ring 13 can corresponding be combined in first joint portion 13c of this locking ring 13 and the second joint portion 12b of this power plate 12, and this output shaft 15 other end 15b are then for being equiped with such as the hammer that clamps instruments such as screwdriver or drill bit (all figure marks).
When these power plate 12 stressed rotations, make this power plate 12 forward act on this output shaft 15 and rotate synchronously, shown in Fig. 2 A; When the reverse stressed rotation of this output shaft 15, then drive these locking ring 13 deflections by this output shaft 15, the ejection part of this locking ring 13 can be pushed this lock pin 14 respectively to respectively should the 12a of restriction portion, will be respectively this lock pin 14 backups contact to respectively should the 12a of restriction portion, thereby limit the respectively displacement of this lock pin 14, and make respectively this this locking ring 13 of lock pin 14 stoppers, by these locking ring 13 these output shafts 15 of locking, to carry out manual operation, shown in Fig. 2 B.
Like this, the ejection part of this locking ring 13 can be pushed this lock pin 14 respectively to the latched position shown in Fig. 2 B, the purpose of this output shaft 15 of lockable when reaching this output shaft 15 reverse application of forces.In other words, stressed and rotate this output shaft 15 synchronously by this power plate 12 when forward acting on this output shaft 15, when forward acting on this output shaft 15,, under motorless situation, convert electric tool to hand-operated tools and use then by respectively this is plugged on this power plate 12 and contacts with lock pin 14 backups of 11 of this retainer rings to locking ring 13 and lock this output shaft 15.
Because respectively this lock pin 14 is inserted between two adjacent 12a of restriction portion of the inboard, power plate 12 of retainer ring 11 and locking ring 13 outsides (being flat face 13a and cam surface 13b) encloses in the enclosure space of formation, topple over thereby can when this enclosure space is avoided putting into respectively this lock pin 14, cause, so can assemble easily, avoid the existing shortcoming of toppling over easily and being inconvenient to assemble of constructing.
Simultaneously, in the utility model, be stressed and rotate when forward acting on this output shaft 15 rotation synchronously by this power plate 12, then drive these locking ring 13 deflections during reverse stressed this output shaft 15 of rotation by this output shaft 15, so will forward be used as power and reverse stressed sharing to different component, accept strong and flimsy shortcoming by this power plate thereby can solve in the prior art.
In addition, this power plate 12 and locking ring 13 are that the shape by the second joint portion 12b and the first joint portion 13c matches with an end 15a of output shaft 15, and the construction profile of this output shaft 15 is simplified, and not only are convenient to processing, more can reduce manufacturing cost.
Claims (9)
1. the locking device of an electric tool output shaft is characterized in that, this locking device comprises:
Locking ring has for first joint portion in conjunction with this output shaft;
Power plate has should first joint portion forming and be used for forming with the restriction portion of sheathed this locking ring of side within it in conjunction with second joint portion of this output shaft and a plurality of interval;
Retainer ring has the 3rd joint portion that is incorporated into this restriction portion outside; And
A plurality of lock pins, be plugged on respectively between this power plate and this retainer ring, with respectively should restriction portion spaced apart, forward acting on this output shaft when the stressed rotation of this power plate rotates synchronously, then drive this locking ring deflection by this output shaft when the reverse stressed rotation of this output shaft, to respectively should restriction portion and limit the respectively displacement of this lock pin, order is this this locking ring of lock pin stopper respectively with this lock pin backup contact respectively, lock this output shaft by this locking ring, to carry out manual operation.
2. the locking device of electric tool output shaft as claimed in claim 1 is characterized in that, this locking ring outside is formed with ejection part.
3. the locking device of electric tool output shaft as claimed in claim 2 is characterized in that, this ejection part is made of cam surface connected to one another and flat face.
4. the locking device of electric tool output shaft as claimed in claim 1, it is characterized in that, first joint portion of this locking ring to the distance of this flat face less than first joint portion of this locking ring distance to this cam surface, so that when the reverse stressed rotation of this output shaft, make this locking ring earlier deflection rotate to lock this output shaft.
5. the locking device of electric tool output shaft as claimed in claim 1 is characterized in that, this first joint portion is a lockhole.
6. the locking device of electric tool output shaft as claimed in claim 1 is characterized in that, adjacent spacing between respectively should restriction portion is greater than the external diameter of this lock pin.
7. the locking device of electric tool output shaft as claimed in claim 1 is characterized in that, this second joint portion is a lockhole.
8. the locking device of electric tool output shaft as claimed in claim 1 is characterized in that, this restriction portion is a projection.
9. the locking device of electric tool output shaft as claimed in claim 1 is characterized in that, the 3rd joint portion is perforation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420047707 CN2683290Y (en) | 2004-03-25 | 2004-03-25 | Electric tool output shaft locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420047707 CN2683290Y (en) | 2004-03-25 | 2004-03-25 | Electric tool output shaft locking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2683290Y true CN2683290Y (en) | 2005-03-09 |
Family
ID=34608105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420047707 Expired - Lifetime CN2683290Y (en) | 2004-03-25 | 2004-03-25 | Electric tool output shaft locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2683290Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8057134B2 (en) | 2007-06-26 | 2011-11-15 | Techtronic Power Tools Technology Limited | Chuck assembly |
| US8075229B2 (en) | 2007-06-26 | 2011-12-13 | Techtronic Power Tools Technology Limited | Multi-speed drill and chuck assembly |
| WO2013020485A1 (en) * | 2011-08-06 | 2013-02-14 | 苏州宝时得电动工具有限公司 | Power tool and operating method therefor |
| CN104354133A (en) * | 2014-09-24 | 2015-02-18 | 郑州跃博汽车电器有限公司 | Locking plate, locking device and electric screwdriver by adopting locking device |
| CN104802117A (en) * | 2014-07-17 | 2015-07-29 | 苏州斯坦科机电有限公司 | Automated manual screwdriver, accommodation seat of automated manual screwdriver and charging circuit |
| CN102186632B (en) * | 2008-10-14 | 2016-01-20 | 罗伯特·博世有限公司 | There is the hand held power machine of automatic spindle locking |
| WO2016008321A1 (en) * | 2014-07-17 | 2016-01-21 | 苏州斯坦科机电有限公司 | Manual-automatic integration screwdriver and accommodating base thereof, and charging loop |
| US10391624B2 (en) | 2011-08-06 | 2019-08-27 | Positec Power Tools (Suzhou) Co., Ltd. | Power tool |
-
2004
- 2004-03-25 CN CN 200420047707 patent/CN2683290Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8057134B2 (en) | 2007-06-26 | 2011-11-15 | Techtronic Power Tools Technology Limited | Chuck assembly |
| US8075229B2 (en) | 2007-06-26 | 2011-12-13 | Techtronic Power Tools Technology Limited | Multi-speed drill and chuck assembly |
| CN102186632B (en) * | 2008-10-14 | 2016-01-20 | 罗伯特·博世有限公司 | There is the hand held power machine of automatic spindle locking |
| US10086507B2 (en) | 2008-10-14 | 2018-10-02 | Robert Bosch Gmbh | Hand-held machine tool having automatic shaft locking |
| WO2013020485A1 (en) * | 2011-08-06 | 2013-02-14 | 苏州宝时得电动工具有限公司 | Power tool and operating method therefor |
| US10391624B2 (en) | 2011-08-06 | 2019-08-27 | Positec Power Tools (Suzhou) Co., Ltd. | Power tool |
| CN104802117A (en) * | 2014-07-17 | 2015-07-29 | 苏州斯坦科机电有限公司 | Automated manual screwdriver, accommodation seat of automated manual screwdriver and charging circuit |
| WO2016008321A1 (en) * | 2014-07-17 | 2016-01-21 | 苏州斯坦科机电有限公司 | Manual-automatic integration screwdriver and accommodating base thereof, and charging loop |
| CN104354133A (en) * | 2014-09-24 | 2015-02-18 | 郑州跃博汽车电器有限公司 | Locking plate, locking device and electric screwdriver by adopting locking device |
| CN104354133B (en) * | 2014-09-24 | 2016-08-24 | 郑州跃博汽车电器有限公司 | A kind of lock plate and locking system and use the electric screw driver of this locking system |
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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 | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140325 Granted publication date: 20050309 |