CN2776629Y - Locking device of electric tool output shaft - Google Patents
Locking device of electric tool output shaft Download PDFInfo
- Publication number
- CN2776629Y CN2776629Y CN 200520009023 CN200520009023U CN2776629Y CN 2776629 Y CN2776629 Y CN 2776629Y CN 200520009023 CN200520009023 CN 200520009023 CN 200520009023 U CN200520009023 U CN 200520009023U CN 2776629 Y CN2776629 Y CN 2776629Y
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- CN
- China
- Prior art keywords
- output shaft
- scotch
- locking device
- electric tool
- power output
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- 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 a locking device for the output shaft of electric tools, which comprises a stopper block, a dynamic force output disc, a stopper ring and a plurality of lock pins, wherein the stopper block comprises a plurality of first joint parts and at least one bridging part, the dynamic force output disc comprises a plurality of insertion parts formed with intervals, the stopper ring is sheathed on the outside of the insertion parts and the lock pins are respectively inserted in the dynamic force output disc arranged between the stopper block and the stopper ring. When the utility model is in use, the first joint parts of the stopper block are sheathed in the dynamic force output disc through the inner side of the insertion parts, the bridging parts of the stopper block are arranged on the top surfaces of the insertion parts and the stopper block deep penetrate into the disc surface of the dynamic force output disc. The thickness of the dynamic force output disc is reduced, and simultaneously the thickness of the stopper block is enlarged. In the moment, the output shaft is locked and the structure is strengthened. The utility model shortens the integral length of the locking device for the output shaft of electric tools.
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 in the electric tool output shaft.
The background skill originally
Rotating electric tool also can be used as electric screw driver except using as electric drill, as long as there is suitable chuck can select for use such as electronic or manual different purposes for clamping drill bit or screwdriver.
Existing electric tool is promptly directly to drive anchor clamps by motor after via reducing gear to rotate, if electric tool is as electric screw driver, the cutter of motor and anchor clamps end is direct transmission, when the cutter end directly is used for rotation screw, 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.
Therefore, at the output shaft of reducing gear installing locking mechanism, the motor that makes electric tool by this locking mechanism is outputting power forward, rotates to drive output shaft; When this output shaft counter-rotating application of force, this locking mechanism promptly locks this output shaft can't rotate this output shaft, this output shaft locking can be used as hand-operated tools like this.A kind of locking device that is installed in the electric tool output shaft that No. 443165 utility model patent of Taiwan patent announcement shown in Fig. 3 to Fig. 4 B proposes can be transformed to different purposes with this electric tool where necessary.
As shown in Figure 3, the locking device of this electric tool output shaft is to set firmly stopper ring 21 in casing (not marking), the power output panel (carrier) 22 that suit can rotate flexibly in this stopper ring 21, the output end face of this power output panel 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 this Plug Division 221, then can supply grafting output shaft (outputshaft) 23 in this Plug Division 221.Also be provided with a plurality of grooves 231 on the link of these output shaft 23 these Plug Divisions 221 of connection corresponding to fin 223 on these Plug Division 221 inner faces, this power output panel 22 can be inserted with these output shaft 23 covers to be connected, the input of this power output panel 22 connects reducing gear and electro-motor (not marking), drive this output shaft 23 by this power output panel 22 and rotate outputting power, shown in Fig. 4 A.
Form an arcuation face 232 respectively 231 of adjacent grooves, the direction of parallel this output shaft 23 is incorporated with at least two and rolls pin 24 in each fluting 222.Respectively the width of this groove 231 is slightly larger than respectively this fin 223.When the reverse application of force was rotated this output shaft 23, this output shaft 23 is forward or reverse deflection slightly; When these output shaft 23 deflections, the arcuation face 232 of this output shaft 23 be ejection this roll pin 24, make this roll pin 24 and push against on fixed stopper ring 21 inner ring surfaces.Shown in Fig. 4 B, promptly lock this output shaft 23 fully this output shaft 23 can't be rotated, under the situation that motor is not powered, convert electric tool to hand-operated tools and use, for example electric screw driver is converted into the manual screw cutter.
Yet, this prior art is to bear all by this power output panel 22 and Plug Division 221 thereof forward to reach the torsion of backward-acting in this output shaft 23, when driving force concentrates on same member such as power output panel 22, must make this member bear excessive torsion and impaired.So regular meeting causes shorten service life and causes using inconvenience because of this power output panel 22 damages and can't use when using this prior art.Be used to place this simultaneously and roll respectively slotting 222 one side is arranged being Unclosing structure of pin 24, make this roll pin 24 and topple over easily, therefore also increased the difficulty of assembling.
In addition, someone also proposes the locking device of another kind of electric tool output shaft, as shown in Figure 5, the locking device of this electric tool output shaft has at least: power output panel 31, scotch (lock plate) 33, stopper ring (lock ring) 35 and a plurality of lock pin (lock pin) 37.This power output panel 31 has the Plug Division 311 of the Plug Division 221 on similar above-mentioned prior art medium power output panel 22 output end faces, and respectively this Plug Division 311 is provided with at interval.These 311 inboards, Plug Division can supply ccontaining this scotch 33, this scotch 33 is arranged on the card of this power output panel 31, these 311 outsides, Plug Division then can supply this stopper ring 35 of socket, and the part and the space between this stopper ring 35 of this Plug Division 311 can supply to be provided with respectively respectively this lock pin 37 to make this scotch 33 expose outside respectively.Simultaneously, this scotch 33 is roughly the same with the thickness of this stopper ring 35, for example is h1.
Yet, this existing locking device is the card of holding this power output panel 31 with this scotch 33, in moment during rotary output axis 23, because the weight of this power output panel 31 is lighter or rough, can't pin this output shaft 23 immediately, must turn over certain angle and could pin this output shaft 23.And, the entire length of this existing locking device is the thick thickness that adds this scotch 33 of the dish of this power output panel 31, but the thinner thickness of this scotch 33 bears behind the torsion easily impairedly, has that the card of this power output panel 31 is too thin can to make also respectively this lock pin 37 is easy to again.Simultaneously, no matter rotating or during locking, this existing locking device all has only the Plug Division 311 of this power output panel 31 stressed, and causing respectively, this Plug Division 311 has same problem easily from using with the card junction fracture of this power output panel 31 with above-mentioned prior art.
Therefore, because the locking device of existing electric tool output shaft can cause shorten service life and cause using inconvenience, so, how to design and can and have the locking device of the electric tool output shaft of reinforced structure at instantaneous-locking, be problem anxious to be inquired in fact.
The utility model content
For overcoming the shortcoming of above-mentioned prior art, main purpose of the present utility model is to provide a kind of can and have the locking device of the electric tool output shaft of reinforced structure at instantaneous-locking.
Another purpose of the present utility model is to provide a kind of locking device that can shorten the electric tool output shaft of entire length.
For reaching above-mentioned and other purpose, the utility model provides a kind of locking device of electric tool output shaft, and this locking device mainly comprises: scotch has a plurality of first joint portions and at least one cross-over connection portion; Power output panel has the Plug Division of a plurality of spaces, and this scotch to should first joint portion and be set in this inboard, Plug Division, and be made the cross-over connection portion of this scotch stride being located at this Plug Division end face; Stopper ring is sheathed on this outside, Plug Division; And a plurality of lock pins, be inserted in the interval of a plurality of Plug Divisions respectively, and corresponding between this scotch and this stopper ring.
Respectively this first joint portion is groove or guide rail.This cross-over connection portion is from the outward extending structure of this scotch end face.This Plug Division is formed with wherein a kind of structure of projection, fin, recess or flange., the thickness of this scotch is smaller or equal to the thickness of this power output panel, and the thickness of this scotch also can be more than or equal to the thickness of this power output panel.
This stopper ring is provided with second joint portion and is set in this outside, Plug Division, and this power output panel also has for the 3rd joint portion that this scotch is set.This second joint portion for example is perforation, and the 3rd joint portion also may be selected to be perforation, and this scotch also can have the 4th joint portion, for example is D type lockhole.
In that this power output panel is stressed when forward rotating, its forward this output shaft of start rotate synchronously; When the stressed backwards rotation of this output shaft, then drive this scotch deflection by this output shaft, will be respectively this lock pin backup contact to respectively should restriction portion, thereby limit the respectively displacement of this lock pin, and make respectively this this scotch of lock pin stopper, and lock this output shaft by this scotch, carry out manual operation.
The utility model makes this scotch go deep into the card of this power output panel, reduce this power output panel thickness same season this scotch the thickness lengthening, can solve scotch and the too thin problem of deriving of power output panel card in the prior art, so can strengthen this scotch and this power output panel, it the time can not be broken in locking, and can lock and have a reinforced structure in moment.
Simultaneously, this scotch is to sink in the card of this power output panel, can shorten the height of this Plug Division, but can not influence bulk strength.In addition, the cross-over connection portion of this scotch can make this power output panel stressed evenly, and the Plug Division that makes this power output panel is easy fracture not, solve cross-over connection portion in the prior art with the problem of this power output panel junction fracture.And, during assembling the direct plug-in mounting of this lock pin is put between the inboard, the adjacent Plug Division of power output panel of this stopper ring and enclosure space that the scotch outside surrounds, lock pin is toppled in the time of can avoiding assembling.
Description of drawings
Fig. 1 is a three-dimensional exploded view of the present utility model;
Fig. 2 is an assembling schematic diagram of the present utility model;
Fig. 3 is the three-dimensional exploded view of existing electric tool lock device of output shaft;
Fig. 4 A is the forward cutaway view of outputting power of existing electric tool lock device of output shaft;
Fig. 4 B is the cutaway view of existing electric tool lock device of output shaft Inverted Output power; And;
Fig. 5 is the three-dimensional exploded view of another existing electric tool lock device of output shaft.
The specific embodiment
Embodiment
See also Fig. 1, the utility model mainly comprises stopper ring 11, power output panel 12, scotch 13 and a plurality of lock pin 14.It should be noted, the locking device of electric tool output shaft of the present utility model be with the locking electric tool main shaft (output shaft 15 as shown in this embodiment) be the example explanation.
As shown in Figure 1, this stopper ring 11 is installed in the electric tool tooth case (not marking), and it is a fixed member.One side of this power output panel 12 connects power gear group (not marking), and opposite side is equipped with the Plug Division 121 that a plurality of intervals form, and wherein this Plug Division 121 can be formed with for example projection, fin or other equivalent structure.This scotch 13 has a plurality of first joint portions 131 and a plurality of cross-over connection portion 133, this first joint portion 131 can be groove, guide rail or other to should Plug Division 121 projections or the equivalent structure of fin, and 133 in this cross-over connection portion is from the outward extending structure of these scotch 13 end faces.
As shown in Figure 2, when assembling, first joint portion 131 of this scotch 13 can be set in this power output panel 12 by these 121 inboards, Plug Division, and the cross-over connection portion 133 that makes this scotch 13 is crossed on this Plug Division 121 end faces, this stopper ring 11 is set in this 121 outsides, Plug Division, and this lock pin 14 is plugged on respectively in the power output panel 12 of 11 of this scotch 13 and this stopper rings.Simultaneously, on this stopper ring 11, can be provided with second joint portion 111 such as perforation, be installed in this power output panel 12, this scotch 13 and this lock pin 14 by this second joint portion 111,12 of this power output panels also can have for example the 3rd joint portion 123 of perforation, for this scotch 13 is set.
Be formed with five for example Plug Divisions 121 of projection or fin in the present embodiment, but, the structure of this Plug Division 121 and quantity are not as limit, also can form three, four or more this Plug Divisions 121, this Plug Division 121 can be again such as recess, flange or other equivalent structure, but not such as among the embodiment limit.Simultaneously, though in the present embodiment to a plurality of cross-over connection portion 133 should first joint portion 131 be set, but a cross-over connection portion 133 also can be set in other embodiments, as long as make this cross-over connection portion 133 stretch out and be crossed on this Plug Division 121 end faces perpendicular to this first joint portion 131; In other words, as long as at least one cross-over connection portion 133 is set, the structure of this cross-over connection portion 133 protrudes in outside this first joint portion 131 and is enough to be crossed on these Plug Division 121 end faces and just is applicable to the utility model.In addition, the structure of the 3rd joint portion 123 also can be such as triangular form, cross, rectangle, sawtooth pattern or other equivalent structure that can make this scotch 13 and this output shaft 15 be fitted to each other.
This scotch 13 is sleeved in the space that 121 inboards, power output panel 12 Plug Divisions encompass, and makes this scotch 13 can be at this space intrinsic deflection, and has at interval the ejection part 135 that this first joint portion 131 respectively is provided with on the outer peripheral face of this scotch 13.It is corresponding structures in conjunction with this output shaft 15 that this scotch 13 also can have 137, the four joint portions 137, the 4th joint portion, for example is D type lockhole or other equivalent structure.
Respectively this lock pin 14 is packed in the space that the ejection part 135 of 121 of the adjacent Plug Divisions of inner peripheral, this power output panel 12 of this stopper ring 11 and this scotch 13 surrounds, and can make distance between these power output panel 12 adjacent two Plug Divisions 121 greater than the external diameter of this lock pin 14, make this lock pin 14 be offset rolling.
This output shaft 15 interts to this power output panel 12 and this scotch 13, and the structure that this output shaft 15 interts this power output panel 12 and this scotch 13 can be as mentioned below, but be not as limit.As shown in Figure 1, first end 151 of these output shaft 15 interspersed these power output panels 12 and this scotch 13, can corresponding be incorporated into the 4th joint portion 137 of this scotch 13 and pass the 3rd joint portion 123 of this power output panel 12,153 installings of second end of this output shaft 15 are such as the hammer (all not marking) that clamps instruments such as screwdriver or drill bit.
In that this power output panel 12 is stressed when forward rotating, make forward this output shaft 15 of start of this power output panel 12, this output shaft 15 is rotated synchronously; When these output shaft 15 stressed backwards rotation, then drive these scotch 13 deflections by this output shaft 15, the ejection part 135 of this scotch 13 can be pushed this lock pin 14 respectively to respectively this Plug Division 121, respectively these lock pin 14 backups contact extremely respectively this Plug Division 121, limit the respectively displacement of this lock pin 14, and make respectively this this scotch 13 of lock pin 14 stoppers, by these scotch 13 these output shafts 15 of locking, carry out manual operation.
Like this, the ejection part 135 of this scotch 13 can be pushed this lock pin 14 respectively to latched position, the purpose of this output shaft 15 of lockable when reaching this output shaft 15 reverse application of forces.In other words, when this output shaft 15 of start forward, these power output panel 12 these output shafts 15 of stressed synchronous rotation; During reverse this output shaft 15 of start,, lock this output shaft 15, under motorless situation, electric tool is converted into hand-operated tools by respectively this is plugged on this power output panel 12 and contacts to this scotch 13 with lock pin 14 backups of 11 of this stopper rings.
As Fig. 2 and Fig. 5 relatively shown in the back, with scotch 33 thickness of prior art is that h1 compares, scotch 13 of the present utility model can go deep into the card of this power output panel 12, the thickness that makes this scotch 13 is that h1 adds h2 (for example equaling H), much larger than the thickness h 1 of the scotch 33 of prior art, and the end face of this scotch 13 can keep substantially flush with the end face of this stopper ring 11 or a little less than the end face of this stopper ring 11 after the assembling.Therefore, use the utility model and not only improved the shortcoming of the Plug Division 121 stressed easy fractures of power output panel 12, and can shorten the entire length of electric tool lock device of output shaft effectively.
Simultaneously, because the outwardly directed cross-over connection of this scotch 13 portion 133 is to contact at whole thickness direction with this power output panel 12, make that this power output panel 12 is stressed even, the Plug Division 121 that more makes this power output panel 12 is easy fracture not, but, shortening in service life, awkward shortcoming in the prior art have been solved so use the utility model instantaneous-locking and have reinforced structure.In addition, this cross-over connection portion 133 protruding backs and stride and be located at this power output panel 12 respectively, both can when rotating this output shaft 15, reduce the frictional force of 12 of this scotch 13 and this power output panels, also can strengthen these scotch 13, be difficult for breaking when making these scotch 13 lockings in this cross-over connection portion 133 protruding backs respectively.
When intensity of the present utility model is enough, also can be corresponding this scotch 13 be deep into the certain depth of these power output panel 12 cards, shortened the entire length of electric tool lock device of output shaft.In other words, the thickness H of this scotch 13 is smaller or equal to the thickness of this power output panel 12 in the present embodiment, but the thickness H of this scotch 13 also can be more than or equal to the thickness of this power output panel 12 in other embodiments.
In addition, because respectively this lock pin 14 is inserted in the enclosure space that inboard, these power output panel 12 121 of adjacent two Plug Divisions and scotch 13 outsides of this stopper ring 11 surround, just can when this enclosure space is avoided putting into respectively this lock pin 14, causes and topple over.Like this, can assemble the shortcoming of having avoided existing structure to topple over, be inconvenient to assemble easily easily.
Claims (13)
1. the locking device of an electric tool output shaft is characterized in that, this device comprises at least:
Scotch has a plurality of first joint portions and at least one cross-over connection portion;
Power output panel has the Plug Division of a plurality of spaces, and this scotch to should first joint portion and be set in this inboard, Plug Division, and be made the cross-over connection portion of this scotch stride being located at this Plug Division end face;
Stopper ring is sheathed on this outside, Plug Division; And
A plurality of lock pins are inserted in the interval of a plurality of Plug Divisions respectively, and corresponding between this scotch and this stopper ring.
2. the locking device of electric tool output shaft as claimed in claim 1 is characterized in that, this first joint portion is a groove.
3. the locking device of electric tool output shaft as claimed in claim 1 is characterized in that, this first joint portion is a guide rail.
4. the locking device of electric tool output shaft as claimed in claim 1 is characterized in that, this cross-over connection portion is from the outward extending structure of this scotch end face.
5. the locking device of electric tool output shaft as claimed in claim 1 is characterized in that, this Plug Division is formed with wherein a kind of structure of projection, fin, recess or flange.
6. the locking device of electric tool output shaft as claimed in claim 1 is characterized in that, the thickness of this scotch is smaller or equal to the thickness of this power output panel.
7. the locking device of electric tool output shaft as claimed in claim 1 is characterized in that, the thickness of this scotch is more than or equal to the thickness of this power output panel.
8. the locking device of electric tool output shaft as claimed in claim 1 is characterized in that, this stopper ring is provided with second joint portion, is set in this outside, Plug Division.
9. the locking device of electric tool output shaft as claimed in claim 8 is characterized in that, this second joint portion is perforation.
10. the locking device of electric tool output shaft as claimed in claim 1 is characterized in that, this power output panel also has for the 3rd joint portion that this scotch is set.
11. the locking device of electric tool output shaft as claimed in claim 10 is characterized in that, the 3rd joint portion is perforation.
12. the locking device of electric tool output shaft as claimed in claim 1 is characterized in that, this scotch also has the 4th joint portion.
13. the locking device of electric tool output shaft as claimed in claim 12 is characterized in that, the 4th joint portion is a D type lockhole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520009023 CN2776629Y (en) | 2005-03-24 | 2005-03-24 | Locking device of electric tool output shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520009023 CN2776629Y (en) | 2005-03-24 | 2005-03-24 | Locking device of electric tool output shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2776629Y true CN2776629Y (en) | 2006-05-03 |
Family
ID=36744015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520009023 Expired - Lifetime CN2776629Y (en) | 2005-03-24 | 2005-03-24 | Locking device of electric tool output shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2776629Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103894989A (en) * | 2012-12-25 | 2014-07-02 | 苏州宝时得电动工具有限公司 | Main shaft self-locking mechanism |
-
2005
- 2005-03-24 CN CN 200520009023 patent/CN2776629Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103894989A (en) * | 2012-12-25 | 2014-07-02 | 苏州宝时得电动工具有限公司 | Main shaft self-locking mechanism |
| CN103894989B (en) * | 2012-12-25 | 2017-02-08 | 苏州宝时得电动工具有限公司 | Main shaft self-locking mechanism |
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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: 20150324 Granted publication date: 20060503 |