CN2726771Y - Fixation fastening chuck - Google Patents
Fixation fastening chuck Download PDFInfo
- Publication number
- CN2726771Y CN2726771Y CN 200420067851 CN200420067851U CN2726771Y CN 2726771 Y CN2726771 Y CN 2726771Y CN 200420067851 CN200420067851 CN 200420067851 CN 200420067851 U CN200420067851 U CN 200420067851U CN 2726771 Y CN2726771 Y CN 2726771Y
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- China
- Prior art keywords
- spin
- drill chuck
- hole
- support member
- fixing
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- Expired - Fee Related
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Abstract
The utility model relates to a fixation fastening drill chuck, comprising a back cap, a main body, rolling balls, a helicoid, clucking jaws, a front cap and a baffling cover. The end surface of the pressure bearing convex shoulder on the main body is produced with a plurality of evenly distributed rolling ball pits in which a plurality of rolling bolls are arranged. Three chucking jaws are respectively arranged in three inclined holes mutually separated with 120 degrees on the main body. The two-half split helicoid sheathed in the slot of the middle part of the main body matches with screw threads on the chucking jaws, so as to form a screw thread drive mechanism. The metal front cap is pressed, matched and sheathed on the helicoid, so that the metal front cap and the helicoid are formed into an integration. The fixation fastening drill chuck has the functions of fixation and fastening and the advantages of simple and compact structure, safe and reliable using and reliable tool chucking keeping under the function of impact vibration. The fixation fastening drill chuck is suitable for all sorts of drill chucks with or without a key.
Description
Technical field
The utility model relates to a kind of self-locking drill chuck that is used for electric percussion drill clamping tool handle, particularly can keep the fixing and locking formula drill chuck of reliable grip instrument under the impact shock effect.
Background technology
The various forms of key-free drill chucks of having produced both at home and abroad generally comprise back cap, body, bearer ring, bearing assembly, bung flange, jaw, preceding cap and door etc. at present.Three jaws place respectively in three inclined holes of 120 ° of spaces on the body, and bung flange is installed in the intermediate channel of body, and form thread transmission with threads engaged on the jaw.Jaw is flexible under in bung flange rotation and by the taper thread effect, and bung flange is by the moving rotation of preceding hatband.Current cap is during with manual rotation, and drill chuck is not for there being spoon, and drill chuck can be connected with the electric drill driving shaft by screw thread or taper hole.
Because the not only rotatable motion of electric percussion drill, and to bear reciprocal impact shock, have the common drawback of spoon or key-free drill chuck to be at present: the clamping of bung flange and jaw only forms by the rotation of screw thread, because the axial impact vibration of transmitting by drill chuck and instrument in the work, jaw has loosening trend.Make instrument produce skidding, have a strong impact on operating efficiency, poor stability.Therefore, how to provide a kind of self-locking drill chuck that under the impact shock effect, still can keep the reliable grip instrument, just become an important topic in present technique field.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art and defective, and a kind of locking function that has is provided, and is safe in utilization, reliable, the fixing and locking formula drill chuck that is used for bearing reciprocal impact shock and is difficult for getting loose.
For achieving the above object, the utility model provides a kind of fixing and locking formula drill chuck.Be provided with back cap, body, spin, bung flange, jaw, preceding cap and door, three jaws are separately positioned in three inclined holes of 120 ° of spaces on the body.Bung flange is installed in the intermediate channel of body, and the formation thread transmission that matches with taper thread on the jaw.Be shaped on uniform a plurality of spin hole on the pressure-bearing convex shoulder end face of described body, be placed with spin in this spin hole.Between spin and the spin hole is matched in clearance, freely rotates in the spin hole in order to spin.Preceding cap sleeve is put on bung flange.The body rear end is equipped with the back cap, and the body front end sleeve is equipped with door.
The quantity in the spin hole on the pressure-bearing convex shoulder end face on the described body is 6～30.
Described spin hole be shaped as hemispherical hole or garden post flat shape hole.
Described bung flange be two halves to opening structure, be sleeved on metal on the bung flange by interference fit before cap it is integrated.
As another kind of embodiment, the utility model also provides another fixing and locking formula drill chuck, comprise back cap, body, spin, bung flange, jaw, preceding cap and door, wherein, also comprise a spin support member, this spin support member places between body and the bung flange, this spin support member is the flat circle ring-type, peritreme is provided with equally distributed 3～6 inner earn keys within it, by means of the material hardness of the spin support member material hardness greater than body, the spin support member is fixedlyed connected by the interference fit of inner earn key with body.
The end face of described spin support member is provided with around equally distributed 6～30 cylindrical holes of central shaft, is matched in clearance between this cylindrical hole and the spin.
The cross sectional shape of described inner earn key is selected from triangle, semicircle, have rounded triangle one of them.
During assembling, the spin support member that will have inner earn key directly is fitted on the corresponding cylindrical section of body, and this cylindrical section surface will be by the inner earn key spline a keyway of spin support member.Thereby fix the spin support member, it can not be rotated around body axis.
First kind of above-mentioned fixing and locking formula drill chuck that is used for the clamping tool handle is behind the clamping tool handle, because spin can not rotate around the body central axis.Spin can only be rotated or slip in the original place, thereby has limited because impact shock causes the trend that bung flange rotates around the body central axis, and then has prevented getting loose of instrument.The fixing and locking formula drill chuck that provides according to the utility model compared with prior art, also has following advantage: owing to directly adopt spin to realize relatively rotating between bung flange and the body, saved bearer ring, saved the spin frame in the bearing assembly, make the drill chuck structure more simple, compactness has also reduced manufacturing cost simultaneously.
Above-mentioned another kind is used for the fixing and locking formula drill chuck of clamping tool handle, behind the clamping tool handle, because spin support member and body are fixed, spin can only rotation in the spin hole of spin support member, and can not revolve round the sun around the body central axis, so, limited because impact shock causes the trend that bung flange rotates around the body central axis, and then prevented getting loose of instrument.
The utility model has overcome the deficiency that existing drill chuck does not have locking device owing to adopt said structure.It manipulates fast, reliable, safety, convenience, has stable performance, advantages such as reliable operation, and being applicable to all kinds ofly has spoon or key-free drill chucks.
Description of drawings
Fig. 1 is the axial section schematic diagram of the utility model fixing and locking formula drill chuck;
Fig. 2 A is the axial section schematic diagram of fixing and locking formula drill chuck body;
Fig. 2 B is that F-F among Fig. 2 A is to cross-sectional schematic;
Fig. 3 is the axial section schematic diagram of the another kind of fixing and locking formula of the utility model drill chuck;
Fig. 4 is the schematic perspective view of spin support member.
The specific embodiment
Further describe the specific embodiment of the present utility model below in conjunction with drawings and Examples.
As shown in Figure 1, the utility model provides a kind of fixing and locking formula drill chuck.Be provided with in three inclined holes that back cap 1, body 2, spin 3, bung flange 4, jaw 5, preceding cap 6 and 7, three jaws 5 of door are separately positioned on 120 ° of spaces on the body 2.Bung flange 4 is installed in the intermediate channel of body 2, and the formation thread transmission that matches with taper thread on the jaw 5.Shown in Fig. 2 A and 2B, be shaped on uniform a plurality of spin hole 22 on the pressure-bearing convex shoulder end face 21 of described body 2, be placed with spin 3 in this spin hole 22.Between spin 3 and the spin hole 22 is matched in clearance, freely rotates in spin hole 22 in order to spin 3.Preceding cap 6 is nested with on bung flange 4.Body 2 rear ends are equipped with back cap 1, and body 2 front end sleeves are equipped with door 7.
The quantity in the spin hole 22 on the pressure-bearing convex shoulder end face 21 on the described body 2 is 6～30, and minimum is 6, mostly is 30 most, and Fig. 2 B is depicted as preferable 20, and the size of visual drill chuck diameter and spin 3 is selected in this scope.
Described spin hole 22 be shaped as hemispherical hole or garden post flat shape hole, be illustrated as the hemispherical hole, for easy to process, also can select post flat shape hole, garden.
Described bung flange 4 be two halves to opening structure, be sleeved on before the metal on the bung flange 4 cap 6 by interference fit it be integrated.
As another kind of embodiment, as shown in Figure 3, the utility model also provides another fixing and locking formula drill chuck, comprise back cap 1, body 2, spin 3, bung flange 4, jaw 5, preceding cap 6 and door 7, wherein, also comprise a spin support member 31, this spin support member 31 places between body 2 and the bung flange 4, as shown in Figure 4, this spin support member 31 is the flat circle ring-type, peritreme is provided with equally distributed 3～6 inner earn keys 311 within it, and by means of the material hardness of the spin support member 31 material hardness greater than body 2, spin support member 31 is fixedlyed connected by the interference fit of inner earn key 311 with body 2.Preceding cap 6 is nested with on bung flange 4.Body 2 rear ends are equipped with back cap 1, and body 2 front end sleeves are equipped with door 7.
The end face 312 of described spin support member 31 is provided with around equally distributed 6～30 cylindrical holes 313 of central shaft, be matched in clearance between this cylindrical hole 313 and the spin 3, being beneficial to spin 3 freely rotates in cylindrical hole 313 or slides, its number is minimum to be 6, mostly be most 30, Figure 4 shows that 20 preferable cylindrical holes 313, the size of visual drill chuck diameter and spin 3 is selected in this scope.
The cross sectional shape of described inner earn key 311 is selected from triangle, semicircle, have rounded triangle one of them.
During assembling, the spin support member 31 that will have inner earn key 311 directly is fitted on the body 2 corresponding cylindrical sections, because the material hardness of spin support member 31 is greater than the material hardness of body 2, the cylindrical section surface of body 2 will be by inner earn key 311 spline a keywaies of spin support member 31, thereby fix spin support member 31 firmly, it can not be rotated around the axis of body 2.
Claims (6)
1. fixing and locking formula drill chuck, comprise back cap (1), body (2), spin (3), bung flange (4), jaw (5), preceding cap (6) and door (7), it is characterized in that, be shaped on uniform a plurality of spin holes (22) on the pressure-bearing convex shoulder end face (21) of described body (2), being placed with spin (3) in this spin hole (22), is matched in clearance between spin hole (22) and the spin (3).
2. fixing and locking formula drill chuck according to claim 1, wherein, the quantity in described spin hole (22) is 6～30.
3. according to claim 1 or the described fixing and locking formula of claim 2 drill chuck, wherein, described spin hole (22) be shaped as hemispherical hole or garden post flat shape hole.
4. fixing and locking formula drill chuck, comprise back cap (1), body (2), spin (3), bung flange (4), jaw (5), preceding cap (6) and door (7), it is characterized in that, the spin support member (31) that also comprises a flat circle ring-type, on the end face (312) of this spin support member (31), be provided with around the equally distributed cylindrical hole of central shaft (313), be placed with spin (3) in this cylindrical hole (313), between itself and the spin (3) is matched in clearance, this spin support member (31) places between body (2) and the bung flange (4), peritreme is provided with equally distributed 3～6 inner earn keys (311) within it, by means of the material hardness of spin support member (31) the material hardness greater than body (2), spin support member (31) is fixedlyed connected by the interference fit of inner earn key (311) with body (2).
5. fixing and locking formula drill chuck according to claim 4, wherein, the number of described cylindrical hole (313) is 6～30.
6. fixing and locking formula drill chuck according to claim 4, wherein, the cross sectional shape of described inner earn key (311) is selected from triangle, semicircle, have rounded triangle one of them.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420067851 CN2726771Y (en) | 2004-06-15 | 2004-06-15 | Fixation fastening chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420067851 CN2726771Y (en) | 2004-06-15 | 2004-06-15 | Fixation fastening chuck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2726771Y true CN2726771Y (en) | 2005-09-21 |
Family
ID=35042794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420067851 Expired - Fee Related CN2726771Y (en) | 2004-06-15 | 2004-06-15 | Fixation fastening chuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2726771Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008009170A1 (en) * | 2006-07-11 | 2008-01-24 | Zhenqian Hu | Hand fastening drill chuck and bearing collar self-locking mechanism for the same |
| EP1772219A3 (en) * | 2005-10-10 | 2009-06-17 | Shanxi Huifeng Machine Industrial Co., Ltd. | A shock-resistant drill chunk of hand tightening type |
| CN103028765A (en) * | 2012-12-27 | 2013-04-10 | 浙江贝力得夹头工业有限公司 | Self-tightening drill chuck |
| CN103143755A (en) * | 2013-03-18 | 2013-06-12 | 山西惠丰机械工业有限公司 | Sliding friction self-locking drill chuck |
| CN104690696A (en) * | 2013-12-05 | 2015-06-10 | 苏州宝时得电动工具有限公司 | Supporting device and power tool provided with same |
| CN105798360A (en) * | 2014-12-31 | 2016-07-27 | 苏州宝时得电动工具有限公司 | Working head support device and power tool |
-
2004
- 2004-06-15 CN CN 200420067851 patent/CN2726771Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1772219A3 (en) * | 2005-10-10 | 2009-06-17 | Shanxi Huifeng Machine Industrial Co., Ltd. | A shock-resistant drill chunk of hand tightening type |
| WO2008009170A1 (en) * | 2006-07-11 | 2008-01-24 | Zhenqian Hu | Hand fastening drill chuck and bearing collar self-locking mechanism for the same |
| CN103028765A (en) * | 2012-12-27 | 2013-04-10 | 浙江贝力得夹头工业有限公司 | Self-tightening drill chuck |
| CN103143755A (en) * | 2013-03-18 | 2013-06-12 | 山西惠丰机械工业有限公司 | Sliding friction self-locking drill chuck |
| CN104690696A (en) * | 2013-12-05 | 2015-06-10 | 苏州宝时得电动工具有限公司 | Supporting device and power tool provided with same |
| CN105798360A (en) * | 2014-12-31 | 2016-07-27 | 苏州宝时得电动工具有限公司 | Working head support device and power tool |
| CN105798360B (en) * | 2014-12-31 | 2017-12-29 | 苏州宝时得电动工具有限公司 | Work head supporting device and power tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050921 Termination date: 20110615 |