CN2808375Y - Torque-transferring reliable hand-operated drill chuck - Google Patents
Torque-transferring reliable hand-operated drill chuck Download PDFInfo
- Publication number
- CN2808375Y CN2808375Y CN 200520013053 CN200520013053U CN2808375Y CN 2808375 Y CN2808375 Y CN 2808375Y CN 200520013053 CN200520013053 CN 200520013053 CN 200520013053 U CN200520013053 U CN 200520013053U CN 2808375 Y CN2808375 Y CN 2808375Y
- Authority
- CN
- China
- Prior art keywords
- nut
- rotary sleeve
- protruding key
- width
- 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 provides a hand-tightening drill chuck with reliable torque force transference, which comprises a drill body, a chuck jaw, a nut forming a screw-thread connection with the chuck jaw, and a rotary sleeve restricted in the axial direction for operating the nut, wherein the lower end of the nut is molded with convex keys along the circumferential direction. Grooves are formed between convex keys, and the width of each groove is longer than the width of each convex key. The inner wall of the rotary sleeve is molded with a configuration meshing with the convex keys and the grooves on the nut. The utility model can simplify the torque force transference structure of the rotary sleeve and the nut. The torque force transference is reliable, and larger torque force can be transferred.
Description
Technical field
The utility model relates to a kind of drill chuck, relates in particular to a kind of for example drill chuck on the drilling machine of machining equipment and electric tool that is installed in.
Background technology
In the prior art, hand fastening drill clutch generally comprises drill body, jaw, the rotary sleeve of axial location and the nut piece that drives by rotary sleeve, three jaws are separately positioned in three inclined holes that are distributed on the drill body, adopt between nut piece and the jaw and be threaded, nut piece can be an independent nut or by nut and close-fitting the nut sleeve outside nut constitutes, rotary sleeve can directly drive the nut piece rotation and transmit torsion, also can drive the nut piece rotation and transmit torsion by the transmission of one or several parts, thereby drive the jaw motion by screw thread, clamp or the drilling tool that gets loose, the back cover also can be set at the rear of rotary sleeve in a lot of hand fastening drill clutch.Therefore be provided with the connecting hole that cooperates with driving device in the rear end of drill body, drill chuck obtains power and rotates from driving device, by the drilling tool processing work of clamping.With regard to the use of drill chuck, can the reliability of torsion transmission directly influence clamp operation and normally carry out between rotary sleeve and the nut, and can obtain larger clamping force, but, tend to increase the difficulty of manufacturing and the complexity of structure in order to obtain satisfied torsion transmission effect to drill bit.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of easily manufactured reliable hand fastening drill clutch of torsion transmission simple in structure.For this reason, the utility model is by the following technical solutions: it comprises the rotary sleeve of drill body, jaw, the nut that is threaded with jaw, axial limited operating nut, the lower end edge circumferencial direction of described nut forms protruding key, form groove between the protruding key, the width of groove is greater than the width of protruding key, the rotary sleeve inwall form with nut on protruding key and the configuration of engagement.Owing to adopt above technical scheme, can simplify the torsion transferring structure of rotary sleeve and nut, the quantity of the protruding key on the nut can be reduced to a pair of, the most after a little while, even the quantity of protruding key is as long as one also passable, thereby the manufacturing of nut and the assembling between nut and the rotary sleeve have been made things convenient for, and, because the width of groove is greater than the width of nut, therefore, the configuration that matches with groove on the rotary sleeve has bigger width, can adopt plastic material and rotary sleeve one-shot forming manufacturing, make conveniently, and have enough shear strengths, thereby the torsion transmission is reliable and can transmit bigger torsion.
When the quantity of the protruding key on the nut was one, above-mentioned " forming groove between the protruding key " was meant the along the circumferential direction formed groove of one side of protruding key to another side.But, when the quantity of protruding key is a pair of, can make the reliability of torsion transmission and the simplicity of drill chuck structure and assembling reach reasonable optimizing.
The technical solution of the utility model can be applicable to the hand fastening drill clutch of duplex shell structure, promptly has the hand fastening drill clutch of back cover, also applicable to the hand fastening drill clutch of single shell structure, does not promptly have the hand fastening drill clutch of back cover.
Description of drawings
Fig. 1 partly cuts open schematic diagram for a kind of embodiment's of the utility model.
Fig. 2 is the A-A cutaway view of Fig. 1.
Fig. 3 is a nut schematic diagram embodiment illustrated in fig. 1.
The specific embodiment
With reference to accompanying drawing.The utility model comprises the rotary sleeve 2 of drill body 1, jaw 4, the nut 3 that is threaded with jaw, axial limited operating nut, the lower end edge circumferencial direction of described nut forms protruding key 31, form groove 32 between the protruding key, the width of groove is greater than the width of protruding key, the rotary sleeve inwall form with nut on protruding key and the configuration of engagement.
As shown in Figure 2, the moulding of rotary sleeve inwall with nut on protruding key and engagement be configured as sunk part that cooperates with protruding key 31 and the projection that cooperates with groove 32.As shown in the figure, the quantity of protruding key is a pair of.Drawing reference numeral 5 is and the nut sleeve of nut interference fit that like this, but nut dimidiation formula structure is installed more convenient.Drawing reference numeral 6,7 is respectively bearing, packing ring.
The axial location mode of rotary sleeve can adopt multiple, such as forming rotating axial location relation between rotary sleeve and the drill body, perhaps establish a part at the front end of drill body, rotary sleeve and this part form rotating axial location relation, perhaps this part is in the place ahead of rotary sleeve, the axially-movable of other part engagement limits rotary sleeves on this part and the drill chuck.Present embodiment is an example with the drill chuck of duplex shell structure, it also is provided with the back cover 8 of fixedlying connected with drill body, the axial location of rotary sleeve adopts the rear end of rotary sleeve and the front end clamping realization of back cover, like this, both guaranteed rotating in a circumferential direction and axial location of rotary sleeve, simultaneously, make the axial positioning structure of rotary sleeve more simply assemble convenient.
Claims (3)
1, the reliable hand fastening drill clutch of a kind of torsion transmission, comprise the rotary sleeve that drill body, jaw, the nut that is threaded with jaw, axial limited drive nut rotate, the lower end edge circumferencial direction that it is characterized in that described nut forms protruding key, form groove between the protruding key, the width of groove is greater than the width of protruding key, the rotary sleeve inwall form with nut on protruding key and the configuration of engagement.
2, the reliable hand fastening drill clutch of a kind of torsion transmission as claimed in claim 1, it is characterized in that described nut excircle have one with the nut sleeve of its close-fitting.
3, the reliable hand fastening drill clutch of a kind of torsion transmission as claimed in claim 1 or 2 is characterized in that it also is provided with the back cover of fixedlying connected with drill body, the front end clamping of the rear end of rotary sleeve and back cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520013053 CN2808375Y (en) | 2005-07-06 | 2005-07-06 | Torque-transferring reliable hand-operated drill chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520013053 CN2808375Y (en) | 2005-07-06 | 2005-07-06 | Torque-transferring reliable hand-operated drill chuck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2808375Y true CN2808375Y (en) | 2006-08-23 |
Family
ID=36924554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520013053 Expired - Fee Related CN2808375Y (en) | 2005-07-06 | 2005-07-06 | Torque-transferring reliable hand-operated drill chuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2808375Y (en) |
-
2005
- 2005-07-06 CN CN 200520013053 patent/CN2808375Y/en not_active Expired - Fee Related
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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 |