CN2703596Y - Drill clamp - Google Patents
Drill clamp Download PDFInfo
- Publication number
- CN2703596Y CN2703596Y CN 200420041129 CN200420041129U CN2703596Y CN 2703596 Y CN2703596 Y CN 2703596Y CN 200420041129 CN200420041129 CN 200420041129 CN 200420041129 U CN200420041129 U CN 200420041129U CN 2703596 Y CN2703596 Y CN 2703596Y
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- CN
- China
- Prior art keywords
- locking
- ratchet
- drill body
- screw
- drill
- 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 - Fee Related
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Abstract
The utility model relates to a drill chuck, comprising a drill body, gripping jaws, a screw nut, a screw nut cover, a bearing, a front cover and a rear cover. Three gripping jaws are respectively arranged in the three uniformly divided inclined holes of the drill body, a screw gear is formed by the screw nut and the gripping jaws; axial teeth are arranged on the inner side of the rear end of the screw nut cover, and are peripherally distributed. A locking ring is arranged between the bearing and the drill body, an intermediate cover is provided between the front cover and the rear over; locking ratchet jaws are arranged upwards on the lateral surface of the circumference of the locking ring, an unblocking convex area and an elastic positioning convex area are arranged on the rear side of the locking ratchet jaws. The axial ratchet bars of the screw nut cover engage with the locking ratchet, the unblocking convex area and the elastic positioning convex area match with the unblocking and positioning mechanism arranged inside the intermediate cover, and control the looseness of the locking ratchet jaws or the ratchet bars inserting the screw nut cover; a locking mechanism is formed. The utility model has the advantages that the application and the operation are convenient, fast, and reliable; the drilling tool can not be loosened under vibration or impact; the utility model with locking function adapts to the clamping of various drilling tools.
Description
Technical field
The utility model relates to a kind of drilling tool clamping device, specifically a kind of drill chuck.
Background technology
We know that existing hand fastening drill clutch generally is made up of drill body, jaw, screw, nut sleeve, bearing, protheca, back cover.Three jaws are installed in respectively in three five equilibrium inclined holes of drill body, screw is installed in the screw groove of drill body, the screw thread of screw and the screw thread of jaw form thread transmission, nut sleeve is fixedlyed connected with screw, protheca is connected with screw or nut sleeve key, bearing places between the end face and screw of drill body screw groove, and the back cover is fixedlyed connected with drill body, and there are screwed hole or taper hole in the drill body rear portion.When installing and using, the screwed hole at drill body rear portion is connected with the power transmission shaft screw rod of power equipment, drives drill body drive three-jaw and folded instrument when power transmission shaft rotates and rotates synchronously.During clamping tool, hold and relatively rotate protheca and back cover, make with the jaw of screw in drill body that protheca connects and rotates,, make jaw mobile forward or backward and clamp or the back off tool handle in the inclined hole of drill body through the screw thread transmission of the screw thread and the jaw one side external surface screw thread of screw inboard.Drill chuck is when work, because vibration or impact, drill chuck is easily loosening, has a strong impact on operating efficiency, poor stability.Drill chuck tight mechanism with lock is arranged, and structure is too complicated, the cost height is difficult for forming and produces in enormous quantities.
Summary of the invention
Technical problem to be solved in the utility model is to overcome above-mentioned the deficiencies in the prior art, provides a kind of rational in infrastructure, can realize the drill chuck locking function, and assembling is easy, stable performance, reliable operation, easy to use, the drill chuck that cost is low.
The technical scheme that the above-mentioned technical problem that solves the utility model adopts is: a kind of drill chuck, include drill body, jaw, screw, nut sleeve, bearing, protheca, the back cover, three jaws are installed in respectively in three five equilibrium inclined holes of drill body, screw is installed in the screw groove of drill body, bearing is installed between drill body and the screw, screw and jaw form thread transmission, nut sleeve is fixedlyed connected with screw, protheca is connected with the nut sleeve key, it is characterized in that: the rear inside of nut sleeve is provided with the axial ratchet of circle distribution, be provided with a retaining ring between the end face of bearing and drill body screw groove, be provided with intermediate sleeve between protheca and the back cover, retaining ring is positioned at intermediate sleeve and axial ratchet inboard, retaining ring circumference side circumferentially is provided with the locking ratchet that plurality of outward tilts, the locking ratchet rear side is provided with release projection and elasticity positioning convex, the axial ratchet engagement of locking ratchet and nut sleeve, release projection and elasticity positioning convex cooperate with release and the detent mechanism that the intermediate sleeve inboard is provided with, the ratchet of nut sleeve is thrown off or inserted to the control locking ratchet, forms retaining mechanism.
The said retaining ring of the utility model is fixedlyed connected with drill body, that is to say between itself and the drill body not rotate.Release that the intermediate sleeve inboard is provided with and detent mechanism include the locking dead slot and uncage projection and locking positioning groove and the locating slot that uncages.When locking ratchet is inserted the ratchet of nut sleeve inboard, the release projection and the elasticity positioning convex of retaining ring lay respectively in the locking dead slot and locking positioning groove of intermediate sleeve inboard, has only trend to the clamping direction rotation, not to unclamping the possibility that direction is unclamped, form reliable retaining mechanism, reach the self-locking purpose; Backward rotation intermediate sleeve, release projection are subjected to the uncage compressing of projection of intermediate sleeve inboard, and the ratchet of locking ratchet and nut sleeve inboard is thrown off, the elasticity positioning convex is arranged in the locating slot that uncages of intermediate sleeve inboard, at this moment, protheca and back cover form hand-tight structure, have hand-tight big moment function.
The utility model is because the nut sleeve inboard is provided with axial ratchet, and the elastic pawl of retaining ring inserts or bullet is realized self-locking from the axial ratchet of nut sleeve, has overcome the deficiency that present drill chuck does not have locking device.It manipulates fast, reliable, convenient, have advantages such as rational in infrastructure, easy to assembly, stable performance, reliable operation, be applicable to the clamping of various drilling tools.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described further:
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the utility model nut sleeve structural representation.
Fig. 3 is the utility model retaining ring structural representation.
Fig. 4 is the vertical view of Fig. 3.
Fig. 5 is the utility model intermediate sleeve structural representation.
Fig. 6 is the schematic cross-section of Fig. 5.
Label among the figure is: 1. drill body, 2. back cover, 3. screw, 4. jaw, 5. nut sleeve, the axial ratchet of 5-1., 6. protheca, 7. bearing, 8. jump ring, 9. retaining ring, 9-1. locking ratchet, 9-2. release projection, 9-3. the elasticity positioning convex, 10. intermediate sleeve, 10-1. locks dead slot, the locating slot 10-2. the projection of uncaging, 10-3. locking positioning groove, 10-4. are uncaged.
The specific embodiment
As can be seen from Figure 1, a kind of drill chuck of the utility model includes drill body 1, back cover 2, screw 3, jaw 4, nut sleeve 5, protheca 6, bearing 7.Three jaws 4 are installed in respectively in three five equilibrium inclined holes of drill body 4, screw 3 is installed in the screw groove of drill body 1, the screw thread of the screw thread of screw 3 and jaw 4 forms thread transmission, nut sleeve 5 is fixedlyed connected with screw 3, protheca 6 is connected with nut sleeve 5 keys, bearing 7 places between the end face and screw 3 of drill body 1 screw groove, and back cover 2 is fixedlyed connected with drill body, and there are screwed hole or taper hole in the drill body rear portion.When installing and using, the screwed hole at drill body rear portion is connected with the power transmission shaft screw rod of power equipment, drives drill body drive three-jaw and folded instrument when power transmission shaft rotates and rotates synchronously.During clamping tool, hold and relatively rotate protheca and back cover, make with the jaw of screw in drill body that protheca connects and rotates,, make jaw mobile forward or backward and clamp or the back off tool handle in the inclined hole of drill body through the screw thread transmission of the screw thread and the jaw one side external surface screw thread of screw inboard.The pass of said structure and each parts is a prior art, and this does not describe in detail.
Characteristics of the present utility model are: the rear inside of nut sleeve 5 is provided with the axial ratchet 5-1 of circle distribution, as shown in Figure 2.It had both had the effect that Fixed Nut connects protheca the utility model nut sleeve, had the effect by retaining ring and drill body locking again.
Fig. 3 is the structural representation of the utility model retaining ring 9.As shown in Figure 3, Figure 4, retaining ring 9 is between bearing 7 and drill body 1.That is to say between the end face of bearing 7 and drill body 1 screw groove to be provided with a retaining ring 9, retaining ring 9 is fixedlyed connected with drill body 1, does not rotate between itself and the drill body.Retaining ring 9 is positioned at intermediate sleeve 10 and axial ratchet 5-1 inboard.Retaining ring 9 has the plane of a hollow, and the circumference side circumferentially is provided with the locking ratchet 9-1 that plurality of outward tilts, and locking ratchet 9-1 rear side is provided with release projection 9-2 and elasticity positioning convex 9-3.Release projection 9-2 and elasticity positioning convex 9-3 made progress in same week, were symmetrical arranged.The axial ratchet engagement of locking ratchet and nut sleeve, release projection 9-2 and elasticity positioning convex 9-3 cooperate with release and the detent mechanism that the intermediate sleeve inboard is provided with, and the ratchet of nut sleeve is thrown off or inserted to the control locking ratchet, forms retaining mechanism.
The utility model retaining ring 9 plays bearing gasket on the one hand, and the axial ratchet engagement of itself and nut sleeve has locking effect on the other hand.
Be provided with intermediate sleeve 10 between the utility model protheca 6 and the back cover 2, Fig. 5 is the utility model intermediate sleeve structural representation.As Fig. 5, shown in Figure 6, release that intermediate sleeve 10 inboards are provided with and detent mechanism include locking dead slot 10-1 and uncage protruding 10-2 and locking positioning groove 10-3 and the locating slot 10-4 that uncages.
New connection has been adopted in the axial constraint location of the utility model protheca 6, and it can be to be provided with annular groove on drill body 1, also is provided with annular groove in the protheca inboard accordingly, and jump ring 8 is housed in the annular groove, and protheca is connected with drill body by jump ring 8.As shown in Figure 1.Jump ring is used for stoping protheca axially to break away from drill body, and does not influence rotatablely moving of the relative drill body of protheca.The utility model also can be to be provided with annular groove on drill body, is provided with endoporus in the protheca inboard accordingly, and jump ring is housed in the endoporus, and protheca is connected with drill body by jump ring.
During the utility model work, protheca 6 drives nut sleeve 5 and rotates, and realizes that drill chuck unclamps, clamps mainly action.If do not want to be used for impact function, electric drill is in non-impact conditions, gets final product work.When changing drilling tool, only need to rotate protheca 6 and get final product.
The utility model is if want to be used for impact function, its locking and releasing process are: rotate intermediate sleeve 10 along the locking direction, ratchet 9-1 on the retaining ring 9 is inserted on the ratchet 5-1 of band tooth nut sleeve 5, form locking device, when clamping drill bit, bearing 7 is pressed on the retaining ring 9, locking member ring 9 is motionless with drill body 1, screw 3 and nut sleeve 5 are rotated further simultaneously, the elastic pawl 9-1 of projection on the retaining ring 9, just turn to the another one internal tooth to the internal tooth of ratchet 5-1 from the nut sleeve inner shafts, produce " " sound, up to revolve motionless till, at this moment, the release projection 9-2 and the elasticity positioning convex 9-3 of retaining ring 9 lay respectively among the locking dead slot 10-1 and locking positioning groove 10-3 of intermediate sleeve inboard, have only trend,, do not form reliable retaining mechanism to unclamping the possibility that direction is unclamped to the clamping direction rotation, reach the self-locking purpose, can or not impact making drilling tool loosening because of vibration.When need unclamp drill bit, direction is rotated intermediate sleeve 10 along unblanking, release projection 9-2 is subjected to the uncage compressing of protruding 10-2 of intermediate sleeve inboard, the ratchet 5-1 of locking ratchet 9-1 and nut sleeve inboard throws off, elasticity positioning convex 10-3 is arranged in the locating slot 10-4 that uncages of intermediate sleeve inboard, at this moment, and successful release, protheca and back cover form hand-tight structure, have hand-tight big moment function.
Advantages such as that the utility model had when using is rational in infrastructure, easy to assembly, stable performance, reliable operation, feel are obvious, easy to use, safe are applicable to the clamping of various drilling tools.
Claims (5)
1, a kind of drill chuck, include drill body, jaw, screw, nut sleeve, bearing, protheca, the back cover, three jaws are installed in respectively in three five equilibrium inclined holes of drill body, screw is installed in the screw groove of drill body, bearing is installed between drill body and the screw, screw and jaw form thread transmission, nut sleeve is fixedlyed connected with screw, protheca is connected with the nut sleeve key, it is characterized in that: the rear inside of nut sleeve is provided with the axial ratchet of circle distribution, be provided with a retaining ring between the end face of bearing and drill body screw groove, be provided with intermediate sleeve between protheca and the back cover, retaining ring is positioned at intermediate sleeve and axial ratchet inboard, and retaining ring circumference side circumferentially is provided with the locking ratchet that plurality of outward tilts, and the locking ratchet rear side is provided with release projection and elasticity positioning convex, the axial ratchet engagement of locking ratchet and nut sleeve, release projection and elasticity positioning convex cooperate with release and the detent mechanism that the intermediate sleeve inboard is provided with, and the ratchet of nut sleeve is thrown off or inserted to the control locking ratchet, forms retaining mechanism.
2, drill chuck as claimed in claim 1 is characterized in that: retaining ring is fixedlyed connected with drill body.
3, drill chuck as claimed in claim 1 is characterized in that: release that the intermediate sleeve inboard is provided with and detent mechanism include the locking dead slot and uncage projection and locking positioning groove and the locating slot that uncages.
4, drill chuck as claimed in claim 1, it is characterized in that: drill body is provided with annular groove, also is provided with annular groove in the protheca inboard accordingly, and jump ring is housed in the annular groove, and protheca is connected with drill body by jump ring.
5, drill chuck as claimed in claim 1 is characterized in that: release projection and elasticity positioning convex on the retaining ring made progress in same week, were symmetrical arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420041129 CN2703596Y (en) | 2004-06-03 | 2004-06-03 | Drill clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420041129 CN2703596Y (en) | 2004-06-03 | 2004-06-03 | Drill clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2703596Y true CN2703596Y (en) | 2005-06-08 |
Family
ID=34774557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420041129 Expired - Fee Related CN2703596Y (en) | 2004-06-03 | 2004-06-03 | Drill clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2703596Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105499667A (en) * | 2016-02-23 | 2016-04-20 | 威海达旺五金制品有限责任公司 | Drill chuck protecting device and drill chuck |
| CN106583527A (en) * | 2016-11-15 | 2017-04-26 | 成都陵川特种工业有限责任公司 | Clamping sleeve assembly for spinning machine |
| CN110039083A (en) * | 2019-04-25 | 2019-07-23 | 山东威达雷姆机械有限公司 | A kind of locking drill chuck |
-
2004
- 2004-06-03 CN CN 200420041129 patent/CN2703596Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105499667A (en) * | 2016-02-23 | 2016-04-20 | 威海达旺五金制品有限责任公司 | Drill chuck protecting device and drill chuck |
| CN106583527A (en) * | 2016-11-15 | 2017-04-26 | 成都陵川特种工业有限责任公司 | Clamping sleeve assembly for spinning machine |
| CN110039083A (en) * | 2019-04-25 | 2019-07-23 | 山东威达雷姆机械有限公司 | A kind of locking drill chuck |
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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: 20050608 Termination date: 20100603 |