CN200963691Y - Self-locking drill chuck - Google Patents
Self-locking drill chuck Download PDFInfo
- Publication number
- CN200963691Y CN200963691Y CN 200620139781 CN200620139781U CN200963691Y CN 200963691 Y CN200963691 Y CN 200963691Y CN 200620139781 CN200620139781 CN 200620139781 CN 200620139781 U CN200620139781 U CN 200620139781U CN 200963691 Y CN200963691 Y CN 200963691Y
- Authority
- CN
- China
- Prior art keywords
- self
- jaw
- connector
- back cover
- groove
- 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 new type of self-lock boring clamp head, comprising a clamping claw and a connection body which matches to the drive machine, and a clamping head and a rear sleeve which surrounds the connection body; the clamping head is connected to the rear sleeve; a protruding positioning step is arranged at the rear part of the connection body; a ring-shaped element with a spring blade around is arranged between the positioning step and the rear sleeve at the rear part of the positioning step; the spring blade is provided with a self-lock part; a concave groove which matches with the self-lock part of the spring blade is arranged at the inner wall of the rear sleeve; the clamping head is provided with a tilting clamping claw groove; the clamping claw is arranged in the clamping claw groove; the clamping claw is connected to the front of the connection body through screw thread. The utility model is of simple structure and is of self-lock function; after the clamping claw clamps the boring head, due to the match of the concave groove of the inner wall of the rear sleeve to the spring blade, the connection body can not rotate relatively to the clamping head, so the clamping claw can clamp the boring head when the boring clamp head is rotated positively and negatively.
Description
Technical field
The utility model relates to a kind of for example drill chuck of drilling machine or electric drill of plant equipment that is installed in.
Background technology
Drill chuck drives screw thread rotation driving jaw and moves forward and backward to clamp and the drill bit that gets loose by input torsion, and after clamping drill bit, drill chuck forward under the drive of driving device rotates at a high speed to be processed workpiece.But when the backward rotation drill chuck, or when drill chuck is dashed forward the chance impact in process, drive screw thread and can produce reverse becoming flexible, jaw is retreated, get loose the clamping of drill bit.
Summary of the invention
When providing a kind of the counter-rotating, technical problem to be solved in the utility model can not get loose to the new-type self-locking clamping chuck of drill bit of drill bit clamping.For this reason, the utility model is by the following technical solutions: the connector that it is provided with jaw and is connected with driving device, it also is provided with and is centered around outer collet body of connector and back cover, collet body is connected with the back cover, the rear portion of connector is provided with outstanding positioning step, between the back cover at positioning step and positioning step rear portion, be provided with the round element that periphery has spring leaf, spring leaf has the self-locking position, described back cover inwall is provided with the groove that cooperates with spring leaf self-locking position, described collet body is provided with the jaw groove of inclination, jaw is located in the jaw groove, and jaw is threaded with the connector front end.Owing to adopt the technical solution of the utility model, simple in structure, has auto-lock function, after jaw clamps drill bit, because back cover inboard wall groove cooperates with spring leaf, connector and collet body can't be produced relative rotation, and when making forward and backward rotation drill chuck, jaw can both keep the clamping to drill bit.
Description of drawings
The embodiment that Fig. 1 provides for the utility model partly cuts open figure.
Fig. 2 is the A-A cutaway view of Fig. 1.
Fig. 3 is the explosive view of Fig. 1.
The specific embodiment
With reference to accompanying drawing.The connector 3 that the utility model is provided with jaw 2 and is connected with driving device, it also is provided with and is centered around outer collet body of connector 1 and back cover 4, collet body is connected with the back cover, collet body and back cover are for being threaded in the present embodiment, the rear portion of connector is provided with outstanding positioning step 32, between the back cover at positioning step and positioning step rear portion, be provided with the round element 6 that periphery has spring leaf 61, spring leaf 61 has self-locking position 62, described back cover inwall is provided with the groove 41 that cooperates with spring leaf self-locking position, described collet body is provided with the jaw groove 11 of inclination, jaw is located in the jaw groove, and jaw is threaded with the connector front end.
Jaw groove 11 is located in the collet body, and it can be with collet body machine-shaping and installation.As shown in the figure, totally 3 of jaws, jaw groove 11 is obliquely installed and evenly is provided with along the collet body circumferencial direction, and jaw is threaded with the connector front end.The connecting thread 31 of jaw and connector front end is a reverse thread.
Be provided with ball 5 between described round element and the back cover, the main body of round element is the dish ring, and ball is located at the dish zone, and the round element of this shape can be simplified the structure that is provided with of ball, makes things convenient for the assembling of ball.
The self-locking position 62 of described spring leaf 61 is its lock end, and the lock end of spring leaf 61 outwards protrudes.The described back cover groove 41 that cooperates with the lock end can V-shaped groove.
In the present embodiment, the neighboring, middle part of connector cooperates with the centre bore of collet body location, has simplified the centre bore location structure of collet body and the assembly work of drill chuck.
In the present embodiment, be provided with the fixed cover 7 that can not rotate relative to connector in the outside of back cover, like this, be more convenient for operating drill chuck.As shown in Figure 1, fixed cover 7 and connector are connected so that fixed cover is circumferentially located by opposite side, and axially, fixed cover is matched in clearance by collar 8 axial limitings between back cover and the fixed cover.
When the operation collet body rotates, jaw is travelled forward, when being the downward direction motion of Fig. 1, connector can be subjected to reaction force backward, make round element 6 be squeezed, after jaw clamps drill bit, round element 6 by jam-packed between the back cover at positioning step 32 and positioning step rear portion, because the effect of frictional force, round element are difficult to rotate, by cooperating of back cover inboard wall groove and spring leaf, unless active backward rotation collet body, can not relatively rotate by the direction of the jaw that gets loose between connector and the collet body, when making forward and backward rotation drill chuck, jaw remains the clamping to drill bit.
Claims (6)
1, new-type self-locking clamping chuck of drill bit, it is characterized in that the connector that it is provided with jaw and is connected with driving device, it also is provided with and is centered around outer collet body of connector and back cover, collet body is connected with the back cover, the rear portion of connector is provided with outstanding positioning step, between the back cover at positioning step and positioning step rear portion, be provided with the round element that periphery has spring leaf, spring leaf has the self-locking position, described back cover inwall is provided with the groove that cooperates with spring leaf self-locking position, described collet body is provided with the jaw groove of inclination, jaw is located in the jaw groove, and jaw is threaded with the connector front end.
2, new-type self-locking clamping chuck of drill bit as claimed in claim 1 is characterized in that being provided with ball between described round element and the back cover, and the main body of round element is the dish ring, and ball is located at the dish zone.
3, new-type self-locking clamping chuck of drill bit as claimed in claim 1 is characterized in that the V-shaped groove of described groove.
4, new-type self-locking clamping chuck of drill bit as claimed in claim 1, the connecting thread that it is characterized in that jaw and connector front end is a reverse thread.
5, new-type self-locking clamping chuck of drill bit as claimed in claim 1 is characterized in that the neighboring, middle part of connector cooperates with the centre bore location of collet body.
6, new-type self-locking clamping chuck of drill bit as claimed in claim 1 is characterized in that being provided with in the outside of back cover the fixed cover that can not rotate relative to connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620139781 CN200963691Y (en) | 2006-11-07 | 2006-11-07 | Self-locking drill chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620139781 CN200963691Y (en) | 2006-11-07 | 2006-11-07 | Self-locking drill chuck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200963691Y true CN200963691Y (en) | 2007-10-24 |
Family
ID=38867706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620139781 Expired - Fee Related CN200963691Y (en) | 2006-11-07 | 2006-11-07 | Self-locking drill chuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200963691Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105798343A (en) * | 2016-06-03 | 2016-07-27 | 柳尧亭 | Internal thread self-tightening drill chuck |
| CN105855582A (en) * | 2016-06-03 | 2016-08-17 | 柳尧亭 | Flat-jaw self-tightened drill chunk |
| CN105880694A (en) * | 2016-06-03 | 2016-08-24 | 柳尧亭 | Self-tightening drill chuck provided with external threads |
| CN105904009A (en) * | 2016-06-03 | 2016-08-31 | 柳尧亭 | Self-tightening drill chuck with gears |
-
2006
- 2006-11-07 CN CN 200620139781 patent/CN200963691Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105798343A (en) * | 2016-06-03 | 2016-07-27 | 柳尧亭 | Internal thread self-tightening drill chuck |
| CN105855582A (en) * | 2016-06-03 | 2016-08-17 | 柳尧亭 | Flat-jaw self-tightened drill chunk |
| CN105880694A (en) * | 2016-06-03 | 2016-08-24 | 柳尧亭 | Self-tightening drill chuck provided with external threads |
| CN105904009A (en) * | 2016-06-03 | 2016-08-31 | 柳尧亭 | Self-tightening drill chuck with gears |
| US11097354B2 (en) | 2016-06-03 | 2021-08-24 | Yaoting Liu | Gear self-tightening 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 |