CN2520973Y - Drill chuck - Google Patents
Drill chuck Download PDFInfo
- Publication number
- CN2520973Y CN2520973Y CN 02212325 CN02212325U CN2520973Y CN 2520973 Y CN2520973 Y CN 2520973Y CN 02212325 CN02212325 CN 02212325 CN 02212325 U CN02212325 U CN 02212325U CN 2520973 Y CN2520973 Y CN 2520973Y
- Authority
- CN
- China
- Prior art keywords
- screw
- sleeve
- protheca
- drill body
- nut sleeve
- 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, which comprises a drill body, a clamping jaw, a bearing, a screw, a screw sleeve, a back sleeve and a front sleeve, wherein three clamping jaws are respectively arranged in three equante inclined holes on the drill body, the screw is arranged in a screw groove of the drill body, and the screw is engaged with the thread on the clamping jaw to form a thread transmission mechanism. The screw sleeve is interferentially engaged with the screw, the front sleeve is arranged outside the screw sleeve, a join key is arranged on the inner side of the front sleeve, a boss is arranged on the side wall of the joint key, a key groove is arranged on the bottom of the screw sleeve, a shoulder is arranged on the wall of the key groove, and the front sleeve is fixedly connected with the screw sleeve through the joint key and the boss on the joint key. The utility model has the advantages that the structure is reasonable, the connection is convenient and reliable, the front sleeve is not capable of playing and dropping, the using is safe and rapid, and the utility model is suitable to clamp 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, existing drill chuck is generally by drill body, jaw, screw, nut sleeve, bearing, bearing gasket, protheca, compositions such as back cover and door, the back cover, bearing gasket interference respectively is connected on the drill body, three jaws are installed in respectively in the inclined hole of three five equilibriums on the drill body, screw is installed in the screw groove of drill body, threaded engagement on screw and the jaw forms thread transmission, nut sleeve and screw interference fit, nut sleeve is provided with protheca outward, and the protheca inwall is provided with key, nut sleeve is provided with keyway, protheca is connected through key with nut sleeve, and is moving for preventing the protheca string, at drill body front end interference fit joint door, during use, hand is twisted the protheca rotation, and protheca drives screw through nut sleeve and rotates, and screw drives in the inclined hole of jaw on drill body through screw thread and moves forward and backward, thereby three-jaw is opened or closure, to reach the purpose of unclamping or clamping drilling tool.The deficiency of said structure is, drill chuck is when work, because vibration or impact, drill chuck and protheca easily become flexible, come off, and have a strong impact on operating efficiency, poor stability.
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, easy to connect, reliable, and protheca can play, come off, safe in utilization, drill chuck efficiently.
The technical scheme in the invention for solving the above technical problem is: a kind of drill chuck, include drill body, jaw, bearing, screw, nut sleeve, the back cover, protheca, back cover interference is connected on the drill body, three jaws are installed in respectively in the inclined hole of three five equilibriums on the drill body, screw is installed in the screw groove of drill body, threaded engagement on screw and the jaw forms thread transmission, nut sleeve and screw interference fit, nut sleeve is provided with protheca outward, it is characterized in that the protheca inboard is provided with connecting key, the connecting key sidewall is provided with boss, the nut sleeve bottom is provided with keyway, have shoulder on the keyway wall, protheca is connected to a fixed through connecting key and boss and nut sleeve on it.
The utility model is owing to adopt said structure, and the boss on the connecting key is fastened on the shoulder of nut sleeve keyway.Compared to existing technology, it is easy to connect, reliable, and protheca can play, come off.The utlity model has advantages such as rational in infrastructure, easy to assembly, stable performance, reliable operation, is a kind of desirable drill chuck, is 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 structural representation of the utility model protheca;
Fig. 3 is the structural representation of the utility model nut sleeve.
Label among the figure is: 1. back cover, 2. drill body, 3. protheca, 4. bearing, 5. screw, 6. nut sleeve, 7. jaw, 8. connecting key, 9. boss, 10. keyway, 11. shoulders.
The specific embodiment
As shown in Figure 1, a kind of drill chuck of the utility model, it is provided with back cover 1, drill body 2, protheca 3, bearing 4, screw 5, nut sleeve 6, jaw 7, wherein cover 1 interference in back is connected on the drill body 2, three jaws 7 are installed in respectively in the inclined hole of three five equilibriums on the drill body 2, and screw 5 is installed in the screw groove of drill body 2, and the threaded engagement on screw 5 and the jaw 7 forms thread transmission, nut sleeve 6 and screw 5 interference fit, the nut sleeve 6 outer prothecas 3 that are provided with.The structure of back cover 1, drill body 2, bearing 4, screw 5, jaw 7 etc. and the pass of coupled parts are prior art, and this does not describe in detail.
Characteristics of the present utility model are: protheca 3 inboards are axially arranged with some connecting keys 8, and connecting key 8 sidewalls are provided with boss 9, and boss 9 is provided with chamfering, with the assembling between convenient and the nut sleeve 6, as shown in Figure 2.Nut sleeve 6 bottoms are provided with keyway 10, and keyway 10 inboard walls are provided with shoulder 11, as shown in Figure 3.Protheca 3 is connected to a fixed through the keyway 10 and the shoulder 11 of connecting key 8 and boss on it 9 and nut sleeve 6.Nut sleeve 6 had both played Fixed Nut, the more important thing is that it plays connection protheca 3, drives the effect that screws rotate by protheca 3 then.Boss 9 on the connecting key 8 is fastened on the shoulder 11 of nut sleeve 6 inboards, 6 of protheca 3 and nut sleeves do not have loosening, obscission, a deficiency that overcome the easy play of protheca, comes off.
The utility model is when working, and with holding tight protheca 3 rotations, protheca drives screw through nut sleeve and rotates, and screw drives in the inclined hole of jaw on drill body through screw thread and moves forward and backward, thereby three-jaw is opened or closure, to reach the purpose of unclamping or clamping drilling tool.
Claims (2)
1. drill chuck, include drill body, jaw, bearing, screw, nut sleeve, the back cover, protheca, back cover interference is connected on the drill body, three jaws are installed in respectively in the inclined hole of three five equilibriums on the drill body, screw is installed in the screw groove of drill body, threaded engagement on screw and the jaw forms thread transmission, nut sleeve and screw interference fit, nut sleeve is provided with protheca outward, it is characterized in that: the protheca inboard is provided with connecting key, and the connecting key sidewall is provided with boss, and the nut sleeve bottom is provided with keyway, have shoulder on the keyway wall, protheca is connected to a fixed through connecting key and boss and nut sleeve on it.
2. drill chuck according to claim 1, it is characterized in that: boss is provided with chamfering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02212325 CN2520973Y (en) | 2002-01-22 | 2002-01-22 | Drill chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02212325 CN2520973Y (en) | 2002-01-22 | 2002-01-22 | Drill chuck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2520973Y true CN2520973Y (en) | 2002-11-20 |
Family
ID=33692017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02212325 Expired - Fee Related CN2520973Y (en) | 2002-01-22 | 2002-01-22 | Drill chuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2520973Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014022987A1 (en) * | 2012-08-08 | 2014-02-13 | 威海达旺五金制品有限责任公司 | Drill chuck |
-
2002
- 2002-01-22 CN CN 02212325 patent/CN2520973Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014022987A1 (en) * | 2012-08-08 | 2014-02-13 | 威海达旺五金制品有限责任公司 | Drill chuck |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |