CN102166663B - Quick-change drill chuck - Google Patents
Quick-change drill chuck Download PDFInfo
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- CN102166663B CN102166663B CN2011100977639A CN201110097763A CN102166663B CN 102166663 B CN102166663 B CN 102166663B CN 2011100977639 A CN2011100977639 A CN 2011100977639A CN 201110097763 A CN201110097763 A CN 201110097763A CN 102166663 B CN102166663 B CN 102166663B
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- collet body
- unlocking ring
- quick
- output shaft
- sleeve pipe
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Abstract
The invention relates to a quick-change drill chuck which belongs to the technical field of tools. The drill chuck mainly comprises a chuck body, a compression spring, an unlocking ring and an electric-drill output shaft; when the unlocking ring is shoved out by the compression spring, so that the unlocking ring is arranged away from the rear end face of the chuck body, and the tapered transition section of the unlocking ring is pressed against a meshing component, so that a radial elastic component is in a diameter expanding state, the radial elastic component is in the state that through carrying out diameter shrinkage and extrusion on the meshing component, the radial elastic component is close to the end of a slot hole away from the chuck body, and the radial elastic component is dropped into a groove and performed perforation by the unlocking ring so as to carry out radial constraint on the unlocking ring; when the unlocking ring overcoming the compression spring is arranged at the position close to the rear end face of the chuck body, the radial elastic component is subjected to axial displacement and diameter expanding with the unlocking ring along the tapered section of a sleeve so as to respectively break away the extrusion and radial constraint on the meshing component. After the quick change drill chuck provided by the invention is adopted, because the unlocking ring is not required to be controlled in the whole process of inserting the unlocking ring into the chuck body, and the forced direction acted on the unlocking ring and the pullout direction of the unlocking ring are consistent when the unlocking ring is pulled out from the chuck body, the operation of inserting the unlocking ring into the chuck body or pulling the unlocking ring out from the chuck body is handy and very convenient.
Description
Technical field
The present invention relates to a kind of drill chuck, especially a kind of Quick-change drill chuck belongs to technical field of tools.
Background technology
Hand held electric drill is a kind of electric tool very commonly used, for satisfy namely can hole, have can the turn of the screw the user demand people developed can quick-replaceable drill chuck.
The patent documentations such as EP1236538B1, EP1946894A1, US2010108338A1, US6550786B2, US7331738B2, US7793572B2 disclose respectively the Quick-change drill chuck of various typical structures.Yet it is comparatively complicated that these Quick-change drill chuck structures all seem.
The patent No. is the Deutsche Bundespatent of DE20016090U1, a kind of Quick-change drill chuck of simple in structure, cost economy is disclosed, this drill chuck is mainly by forming the collet body, Compress Spring of circumferential constraint with output shaft and separating retainer and the electric drill output shaft forms, the front end of described output shaft has the non-circle section that matches with described sleeve pipe counter structure, and the middle part has cylindrical section; Endoporus becomes matched in clearance with electric drill output shaft cylindrical section sleeve pipe is extended at the rear end face middle part of described collet body, the tube wall of described sleeve pipe has the perforation that at least two places settle joggle piece, described release snare is contained on the cylindrical of sleeve pipe, and described Compress Spring is between collet body rear end face and solution retainer; The rear end of described solution retainer has the little reducing hole of outer imperial palace; When the compressed spring of described solution retainer struts the position that is in away from the collet body rear end face, the punch position of the corresponding described sleeve pipe of the path section in described reducing hole, described joggle piece is subjected to radial constraint to stretch out perforation inwardly; When described solution retainer overcame Compress Spring and is in position near the collet body rear end face, the punch position of the corresponding described sleeve pipe of large footpath section in described reducing hole, described joggle piece broke away from the radial constraint perforation of can retracting.
Therefore, when the solution retainer was pressed to the position of collet body rear end face by external force, owing to joggle piece can radial outward be deviate from, so collet body can freely be extracted or insert from output shaft.And form with it circumferential constraint when collet body inserts output shaft, and after the release external force, separate the compressed spring of retainer and strut the position that is in away from the collet body rear end face, this moment, joggle piece was subjected to radial constraint to stretch out perforation inwardly, snapped in the groove of output shaft correspondence position, thereby made collet body and output shaft after forming circumferentially constraint, consist of again axial constraint, both are able to reliable connection, and the moment of torsion of output shaft is passed to collet body, realize required drilling operation.Afterwards, when the position of separating retainer and again pressed to by external force the collet body rear end face, and after it is extracted from output shaft because the termination of output shaft has the tool of revolving jack, therefore can insert required revolve tool after, be used for quick the turn of the screw.
The structures shape of this quick chuck no matter collet body is pulled up or is inserted from output shaft, all need to apply external force and will separate retainer and press to collet body.When extracting, owing to be applied to the external force of separating retainer and to extract direction consistent, so easy to operate, one hand can be finished.But, when inserting, because it is opposite with direction of insertion to be applied to the external force of separating retainer, therefore operate awkward, convenient not.
Summary of the invention
The object of the invention is to: for the deficiency that above-mentioned prior art exists, propose a kind of no matter very easily Quick-change drill chuck is extracted or insert all to collet body from output shaft.
In order to reach above purpose, Quick-change drill chuck of the present invention is mainly by forming with collet body, Compress Spring, solution retainer and the electric drill output shaft that output shaft forms circumferential constraint; Endoporus becomes matched in clearance with output shaft sleeve pipe is extended in the rear end of described collet body, and the tube wall of described sleeve pipe has the perforation that at least two places settle joggle piece; The termination of described output shaft has the tool of revolving plug structure, and the front portion has the non-circle section that can consist of with described sleeve pipe counter structure circumferentially constraint, and the cylindrical section at middle part has annular groove; Described release snare is contained on the cylindrical of sleeve pipe, and described Compress Spring is between collet body rear end face and solution retainer; The non-circle section of described output shaft is connected with cylindrical section by the transition cone section of flaring; The tube wall perforation of described sleeve pipe extends to slotted hole vertically, and the sleeve pipe cylindrical of correspondence position has towards the tapering of sleeve pipe bearing of trend convergent, and cover has radial elastic spare; Be in when making described radial elastic spare be in the hole enlargement state away from a collet body rear end and described transition cone section pushing and pressing joggle piece when the compressed spring of described solution retainer struts, described radial elastic spare presents by undergauge extruding joggle piece and relies on described slotted hole away from collet body one end and fall into the trend that described groove is unlocked circle perforation radial constraint; When described solution retainer overcame Compress Spring and is in position near the collet body rear end, along the axially displaced hole enlargement of described sleeve pipe tapered section, the radial constraint of retainer was conciliate in the extruding that described joggle piece breaks away from radial elastic spare to described radial elastic spare with described solution retainer.
Therefore, when collet body being inserted on the electric drill output shaft, the transition cone section on the output shaft can make the hole enlargement of radial elastic spare by the pushing and pressing joggle piece, produces undergauge extruding joggle piece and relies on the sleeve pipe slotted hole away from collet body one end and fall into the trend of output shaft groove.In case output shaft is injected fully the endoporus of sleeve pipe, after non-circle section consists of circumferentially constraint with the engagement of sleeve pipe counter structure, under the effect of above-mentioned trend, joggle piece will fall into the output shaft groove and be unlocked circle perforation radial constraint, thereby consist of collet body and output shaft axial constraint trend, this moment, output shaft can pass to collet body with moment of torsion, realized required drilling operation.When the retainer of drawing solution outwardly, separate retainer under the effect of drawing external force, press to the position of collet body rear end face, radial elastic spare is with separating retainer along the axially displaced hole enlargement of sleeve pipe tapered section, and joggle piece will break away from respectively simultaneously the axial compression constraint of radial elastic spare and conciliate the radial constraint that retainer is bored a hole, and remove the axial constraint between collet body and the output shaft, make collet body be easy to pull up, because the termination of output shaft has the tool of revolving jack, therefore can insert required revolve tool after, be used for quick the turn of the screw.
All need not control and separate retainer owing to inserting the whole process of collet body, and when pulling up collet body, act on separate retainer is subjected to force direction consistent with slotting outgoing direction, so it is all handy, very convenient to extract or insert collet body.
Description of drawings
The present invention is further illustrated below in conjunction with accompanying drawing.
Fig. 1 is the stereo decomposing structural representation of the embodiment of the invention one.
Fig. 2 is the radial elastic spare of Fig. 1 embodiment---the ring spring structural representation.
Fig. 3 is Fig. 1 embodiment collet body plug-in mounting structure schematic diagram.
Fig. 4 is the complete structural representation of Fig. 1 embodiment plug-in mounting.
Fig. 5 is the A-A cutaway view of Fig. 4.
Fig. 6 is the collet body released state schematic diagram of Fig. 1 embodiment.
Fig. 7 is the radial elastic spare of the embodiment of the invention two---opening elastic cycle structure schematic diagram.
Fig. 8 is the bore state structural representation.
Fig. 9 is the turn of the screw status architecture schematic diagram.
The specific embodiment
Embodiment one
The Quick-change drill chuck of the present embodiment as shown in Figure 1, mainly by can with output shaft form circumferential constraint collet body 1, Compress Spring 3, separate retainer 6 and electric drill output shaft 5 forms.Sleeve pipe 1-1 and the outer ring 1-3 of 5 one-tenth matched in clearance of endoporus and output shaft are extended in the rear end face middle part of collet body 1, and the tube wall of this sleeve pipe 1-1 has two places that are uniformly distributed along the circumference and settles joggle piece---and perforation 1-2 is grown in extending axially of steel ball 4.The outer end of sleeve pipe 1-1 is equipped with circlip for shaft 7.
The termination of output shaft 5 has interior hexagonal screwing tool jack 5-1, and the front portion has the non-circle section of the outer-hexagonal 5-2 that can consist of with the sleeve pipe counter structure circumferentially constraint, and the cylindrical section tool 5-3 at middle part has the annular groove 5-4 that matches with steel ball.The non-circle section of outer-hexagonal 5-2 is connected with cylindrical section 5-3 by flaring transition cone section 5-7.Be spacing shoulder 5-5 after the annular groove and be used for being clamped in gripping section 5-6 on the electric drill.Separate retainer 6 and be the plate-like with the recessed 6-1 of middle part circle, the perforation by the center is sleeved on the cylindrical of sleeve pipe 1-1, the internal diameter of separating the retainer perforation with fall into that the envelope external diameter of steel ball 4 matches behind the groove 5-4, therefore can form reliable radial constraint.The internal diameter of the recessed 6-1 of circle and the outer ring 1-3 external diameter of collet body match, mutually form plug bush structure, Compress Spring 3 is at the rear end face of collet body 1 and separate between the recessed end face of circle of retainer 6, and is included in the sleeve space of separating the recessed 6-1 of lock collar circle and collet body outer ring 1-3 formation.The sleeve pipe cylindrical of the long perforation of sleeve pipe tube wall 1-2 correspondence position has towards the tapering of sleeve pipe bearing of trend convergent, and cover has the ring spring 2 (referring to Fig. 2) as radial elastic spare.
When chuck enters the plug-in mounting state, as shown in Figure 3, separate retainer 6 compressed springs 3 and strut, spacing by back-up ring 7, be in away from collet body 1 rear end face position, the transition of output shaft 5 cone section 5-7 pushing and pressing steel ball 4 makes ring spring 2 be in the hole enlargement state.At this moment, needn't control and separate lock collar 6, need not additional move, ring spring 2 naturally presents by undergauge extruding steel ball 4 and relies on collet body slotted hole 1-2 away from collet body one end and along with the propelling of collet body 1 falls into output shaft groove 5-4, is unlocked the trend of circle 6 perforation radial constraints.
Then, directly push collet body 1 to output shaft 5, the end face of sleeve pipe 1-1 is resisted against on the spacing shoulder 5-5 of output shaft, the non-circle section 5-2 of the procephalic outer-hexagonal of output shaft 5 ends and sleeve pipe counter structure---when the inner hexagonal hole section consists of circumferentially constraint, as shown in Figure 4, the position that steel ball 4 reaches corresponding annular groove 5-4 falls into wherein, consists of the axial constraint of collet body 1 and output shaft 5, realizes locking.Ring spring 2 undergauges rely on the steel ball 4 that falls into groove.After this, the output shaft on the clamping electric drill can pass to moment of torsion collet body 1, realizes required drilling operation (referring to Fig. 8).
When needs are pulled down collet body 1, separate retainer 6 towards extracting the direction pulling, overcome the active force of Compress Spring 3, when making it be in position near collet body 1 rear end, as shown in Figure 6, ring spring 2 is with separating retainer 6 along the axially displaced hole enlargement of sleeve pipe 1-1 tapered section, the extruding constraint that 4 of steel ball breaks away from ring spring breaks away from solution retainer 6 radial constraints simultaneously, can from groove, deviate from, thereby remove the axial constraint between collet body 1 and the output shaft 5, finish release, continue to pull release circle 6, will from output shaft 1, easily pull up together with collet body 1.To revolve afterwards the jack that tool inserts the output shaft termination, namely can be used for quick the turn of the screw (referring to Fig. 9).Since the release application of force of separating retainer and collet body to extract direction consistent, so release and extracting by once, very convenient.
In the present embodiment, because long perforation base, the both sides b of sleeve pipe tube wall shrinks (referring to Fig. 5), the spacing on base, both sides is less than steel ball size, even therefore collet body 1 is extracted output shaft 5, steel ball can not come off inwardly yet.And when the front end of separating retainer 6 reached capacity the position against collet body 1, less than steel ball size (referring to Fig. 6), so steel ball 4 can not deviate from outwardly yet away from the spacing of collet body one end for its rear end and collet body slotted hole 1-2.
Embodiment two
The difference of the present embodiment and embodiment one is that radial elastic spare adopts opening bullet circle shown in Figure 7, and its used effect is similar to the ring spring of embodiment one, can analogize.Other structure is identical with embodiment one, does not give unnecessary details in addition.
Above radial elastic spare is except ring spring, opening bullet circle, can also adopt other to change structure, for example adopt and have the ring plate structure of internal tooth, this ring plate has the elasticity inner blade towards axioversion, when inner blade was subject to the distortion of axial force generation axial elasticity, the envelope internal diameter that the inner blade tooth top forms also can the elasticity hole enlargement.
In addition to the implementation, the present invention can also have other embodiments.For example, the output shaft termination revolve the tool plug structure except inner hexagonal hole, also can be outer-hexagonal or other can with revolve the tool counter structure and consist of the circumferentially structure of constraint; Joggle piece also can be cuphead pilotage etc. except steel ball.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.
Claims (9)
1. Quick-change drill chuck mainly is comprised of the collet body, Compress Spring, solution retainer and the electric drill output shaft that form circumferential constraint with output shaft; Endoporus becomes matched in clearance with output shaft sleeve pipe is extended in the rear end of described collet body, and the tube wall of described sleeve pipe has the perforation that at least two places settle joggle piece; The termination of described output shaft has the tool of revolving plug structure, and the front portion has the non-circle section that consists of circumferentially constraint with described sleeve pipe counter structure, and the cylindrical section at middle part has annular groove; Described release snare is contained on the cylindrical of sleeve pipe, and described Compress Spring is between collet body rear end face and solution retainer; It is characterized in that: the non-circle section of described output shaft is connected with cylindrical section by the transition cone section of flaring; The tube wall perforation of described sleeve pipe extends to slotted hole vertically, and the sleeve pipe cylindrical of correspondence position has towards the tapering of sleeve pipe bearing of trend convergent, and cover has radial elastic spare; Be in when making described radial elastic spare be in the hole enlargement state away from a collet body rear end and described transition cone section pushing and pressing joggle piece when the compressed spring of described solution retainer struts, described radial elastic spare presents by undergauge extruding joggle piece and relies on described slotted hole away from collet body one end and fall into the trend that described groove is unlocked circle perforation radial constraint; When described solution retainer overcame Compress Spring and is in position near the collet body rear end, along the axially displaced hole enlargement of described sleeve pipe tapered section, the radial constraint of retainer was conciliate in the extruding that described joggle piece breaks away from radial elastic spare to described radial elastic spare with described solution retainer.
2. Quick-change drill chuck according to claim 1, it is characterized in that: the rear end face of described collet body also extends the outer ring, and described solution retainer is and has the recessed plate-like of middle part circle; The internal diameter that described circle is recessed and the external diameter of described outer ring match, and mutually form plug bush structure; Described Compress Spring is included in the sleeve space that described solution lock collar circle is recessed and the collet body outer ring forms.
3. Quick-change drill chuck according to claim 2, it is characterized in that: described radial elastic spare is ring spring.
4. Quick-change drill chuck according to claim 2, it is characterized in that: described radial elastic spare is opening bullet circle.
5. Quick-change drill chuck according to claim 2, it is characterized in that: described radial elastic spare is the ring plate that has towards axioversion elasticity inner blade.
6. according to claim 3,4 or 5 described Quick-change drill chucks, it is characterized in that: the internal diameter of described solution retainer perforation with fall into that the envelope external diameter of joggle piece matches behind the groove.
7. Quick-change drill chuck according to claim 6, it is characterized in that: described joggle piece is steel ball.
8. Quick-change drill chuck according to claim 7 is characterized in that: when the front end of described solution retainer is in against the collet body position, the rear end of described solution retainer and collet body slotted hole away from the spacing of collet body one end less than described steel ball size.
9. Quick-change drill chuck according to claim 8, it is characterized in that: the tool plug structure that revolves of described output shaft termination is interior hexagonal screwing tool jack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100977639A CN102166663B (en) | 2011-04-19 | 2011-04-19 | Quick-change drill chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100977639A CN102166663B (en) | 2011-04-19 | 2011-04-19 | Quick-change drill chuck |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102166663A CN102166663A (en) | 2011-08-31 |
| CN102166663B true CN102166663B (en) | 2013-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100977639A Active CN102166663B (en) | 2011-04-19 | 2011-04-19 | Quick-change drill chuck |
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| CN (1) | CN102166663B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103231094B (en) * | 2013-04-24 | 2015-04-15 | 山东威达机械股份有限公司 | Quick-change drill chuck |
| CN105345100B (en) * | 2015-12-18 | 2019-09-24 | 山东威达机械股份有限公司 | A kind of closefisted drill chuck with lock of releasable deformation force |
| CN108372485B (en) * | 2018-02-22 | 2023-06-06 | 南京久驰机电实业有限公司 | Multifunctional output mechanism of electric tool |
| CN111941379B (en) * | 2020-08-26 | 2023-06-06 | 江西昌河航空工业有限公司 | Device for scribing special-shaped hollow section bar |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20016090U1 (en) * | 2000-09-15 | 2000-11-16 | Ceka Elektrowerkzeuge Ag + Co. Kg, Wattwil | Device for releasably attaching a drill chuck to a drill spindle |
| CN2778444Y (en) * | 2004-10-14 | 2006-05-10 | 陈月辉 | Quick safety connecting mechanism |
| CN201399593Y (en) * | 2009-03-31 | 2010-02-10 | 无锡桥联风电科技有限公司 | Screw tap holder used for machining |
| CN201659551U (en) * | 2009-02-27 | 2010-12-01 | 布莱克和戴克公司 | Head element retaining device |
| CN202010797U (en) * | 2011-04-19 | 2011-10-19 | 南京久驰机电实业有限公司 | Quick-change drill chuck |
-
2011
- 2011-04-19 CN CN2011100977639A patent/CN102166663B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20016090U1 (en) * | 2000-09-15 | 2000-11-16 | Ceka Elektrowerkzeuge Ag + Co. Kg, Wattwil | Device for releasably attaching a drill chuck to a drill spindle |
| CN2778444Y (en) * | 2004-10-14 | 2006-05-10 | 陈月辉 | Quick safety connecting mechanism |
| CN201659551U (en) * | 2009-02-27 | 2010-12-01 | 布莱克和戴克公司 | Head element retaining device |
| CN201399593Y (en) * | 2009-03-31 | 2010-02-10 | 无锡桥联风电科技有限公司 | Screw tap holder used for machining |
| CN202010797U (en) * | 2011-04-19 | 2011-10-19 | 南京久驰机电实业有限公司 | Quick-change drill chuck |
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| CN102166663A (en) | 2011-08-31 |
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