CN201076918Y - Novel self-tightening drill chuck - Google Patents
Novel self-tightening drill chuck Download PDFInfo
- Publication number
- CN201076918Y CN201076918Y CNU200720114882XU CN200720114882U CN201076918Y CN 201076918 Y CN201076918 Y CN 201076918Y CN U200720114882X U CNU200720114882X U CN U200720114882XU CN 200720114882 U CN200720114882 U CN 200720114882U CN 201076918 Y CN201076918 Y CN 201076918Y
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- CN
- China
- Prior art keywords
- connector
- face
- drill chuck
- claw
- circular element
- 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 self-fasten drill chuck, comprising a connector connected with a drive machine, a screw connected in reverse-thread with the center hole of the connector, a claw, a front sleeve, a claw bracket and a joint sleeve connected with the claw bracket. The utility model is characterized in that, an outward boss is arranged at the central section of the connector; a first circular element equipped with internal teeth is arranged between the boss and the joint sleeve; the first circular element is equipped with an end face which can bear backward force; each of the first circular element and the joint sleeve is equipped with a locking end face matching to each other; a second circular element provided with a spring piece and capable of moving together with the connector is arranged outside the connector of the drill chuck; one end of the spring piece tilts or bulges towards the direction of the internal teeth; the tilt or the bulge is inserted among the internal teeth; a circle of ball bearings are arranged between the rear end face of the boss and the end face of the first circular element that can bear backward force. The utility model has the advantages of convenient operation and self lock function; when the drill bit is clamped fixedly by the claw, even the drill chuck rotates reversely, loosening of the claw can be prevented as the first circular element is matched with the self locking end face of the joint sleeve, and the claw can still clamp the drill bit.
Description
Technical field
The utility model relates to a kind of keyless drill chuck.
Background technology
In the prior art, keyless drill chuck is provided with connector, jaw, jaw frame that is connected with driving device and a plurality of bodies that are centered around the drill chuck surface.Reverse thread is connected with the screw rod that is connected with jaw in the centre bore of connector, moves forward and backward and clamps or the drilling tool that gets loose thereby the advance and retreat by screw rod drive jaw.This drill chuck, when drill chuck reversed, such as after the boring when withdrawing from drill bit, jaw might become flexible and get loose to the clamping of drill bit.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of features simple structure and help avoid the loosening new-type keyless drill chuck of jaw when drill chuck reverses.For this reason, the utility model is by the following technical solutions: it comprises the connector that connects driving device, the screw rod that is connected with connector centre bore reverse thread, jaw, protheca, the jaw frame, the adapter sleeve that is connected with the jaw frame, the middle part of connector is provided with the step to outer lug, be provided with the first lap linear element of band internal tooth between described step and adapter sleeve, described first lap linear element has the end face of the power of the backward directions of bearing, described first lap linear element has the locking end face that matches with adapter sleeve, described drill chuck is provided with the second round element of the band spring leaf that moves with connector outside connector, one end of spring leaf has protrusion to the internal tooth direction to the perk of internal tooth direction or spring leaf, described perk or protrusion are inserted in described interior between cog, have a circle ball between the end face of the power of bearing backward directions of the rear end face of described step and first lap linear element.Because adopt the technical solution of the utility model, the utility model is easy to operate, has auto-lock function, after jaw clamps drill bit, though the drill chuck reverse rotation, because the first lap linear element cooperates with the locking end face of adapter sleeve, can help to prevent that jaw is loosening, make jaw still clamp drill bit.
Description of drawings
Fig. 1 partly cuts open schematic diagram for a kind of embodiment of the utility model.
Fig. 2 is the explosive view of Fig. 1.
Fig. 3 is the A-A cutaway view of Fig. 1.
The specific embodiment
With reference to accompanying drawing.The utility model comprises the connector 1 that connects driving device, the screw rod 8 that is connected with connector centre bore 11 reverse threads, jaw 95, protheca 9, jaw frame 7, the adapter sleeve 3 that is connected with the jaw frame, the middle part of connector is provided with the step 12 to outer lug, be provided with the first lap linear element 4 of band internal tooth 41 between described step and adapter sleeve, described first lap linear element has the end face 42 of the power of the backward directions of bearing, described first lap linear element has the locking end face 43 that matches with adapter sleeve, 32, described drill chuck is provided with the second round element 5 of the band spring leaf 51 that moves with connector outside connector, one end of spring leaf is to internal tooth direction perk 53, described perk is inserted in described interior between cog, has a circle ball 97 between the end face of the power of bearing backward directions of the rear end face of described step and first lap linear element.In the utility model, with the head of drill chuck be before, after the afterbody of drill chuck is.
Described perk 53 also can change on the spring leaf protrusion to the internal tooth direction into, protrudes to be inserted in the described internal tooth.
As shown in the figure, evenly be provided with 3 jaw gathering sills on the jaw frame, 3 jaws are divided in the jaw gathering sill and with screw rod 8 and are connected.The front end of adapter sleeve 3 is threaded with protheca 9, and the front end of adapter sleeve 3 is connected with key 71 by groove 31 with the jaw frame.
The rear portion of described first lap linear element is to connector direction bending 40, the end face 42 that bears the power of backward directions is the front end face of bending 40, the locking end face 43 of described first lap linear element is the rear end face of bending 40, and the locking end face 32 that adapter sleeve has is the end face in the face of self-locking end face 43.
Between the rear end face that the part at described second round element rear portion or rear portion is in described step and the ball and be the arc section 54 that cooperates with ball, described step is the arc surface that matches with the arc section corresponding position, like this, can help the power that connector is subjected to is backward passed to ball.
Described connector is provided with mounting groove 13, and this mounting groove 13 is in boss 12 places, and the described second round element comprises body 50 and the connecting portion 52 that is connected with spring leaf, and described connecting portion is provided with the fitting key 55 that cooperates with mounting groove.
In the present embodiment, its rear end is provided with adapter sleeve matched in clearance and the back cover 2 that moves with connector.Drawing reference numeral 96 is its location collar.
Be provided with the anti-turnbuckle 6 that hangs with the centre bore matched in clearance in the connector centre bore, make drill chuck can be applied to the pistol electric drill better.
When the operation drill chuck makes jaw clamp drill bit, connector is subjected to power backward, and power is passed to the first lap linear element by the end face that ball and first lap linear element bear the power of backward directions, the first lap linear element has the trend of motion backward, when drill chuck clamps drill bit, the power maximum backward that connector and first lap linear element are subjected to is close between the locking end face of described first lap linear element and adapter sleeve; Because of the perk end 53 of the spring leaf cooperation and the second round element with internal tooth moves with connector, first lap linear element, the second round element move with connector; Like this, during reverse rotation, the frictional resistance between the locking end face can help to prevent that jaw is loosening, makes jaw still clamp drill bit after drill chuck clamps drill bit.
Claims (5)
1. new-type keyless drill chuck, comprise the connector that connects driving device, the screw rod that is connected with connector centre bore reverse thread, jaw, protheca, the jaw frame, the adapter sleeve that is connected with the jaw frame, the middle part that it is characterized in that connector is provided with the step to outer lug, be provided with the first lap linear element of band internal tooth between described step and adapter sleeve, described first lap linear element has the end face of the power of the backward directions of bearing, described first lap linear element has the locking end face that matches with adapter sleeve, described drill chuck is provided with the second round element of the band spring leaf that moves with connector outside connector, one end of spring leaf has protrusion to the internal tooth direction to the perk of internal tooth direction or spring leaf, described perk or protrusion are inserted in described interior between cog, have a circle ball between the end face of the power of bearing backward directions of the rear end face of described step and first lap linear element.
2. a kind of new-type keyless drill chuck as claimed in claim 1, between the rear end face that a part that it is characterized in that described second round element rear portion or rear portion is in described step and the ball and be the arc section that cooperates with ball, described step is the arc surface that matches with the arc section corresponding position.
3. a kind of new-type keyless drill chuck as claimed in claim 1 or 2, it is characterized in that described connector is provided with mounting groove, the described second round element comprises body and the connecting portion that is connected with spring leaf, and described connecting portion is provided with the fitting key that cooperates with mounting groove.
4. a kind of new-type keyless drill chuck as claimed in claim 1 or 2, the rear end that it is characterized in that it are provided with adapter sleeve matched in clearance and the back cover that moves with connector.
5. a kind of new-type keyless drill chuck as claimed in claim 1 or 2 is characterized in that being provided with in the connector centre bore the anti-turnbuckle that hangs with the centre bore matched in clearance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720114882XU CN201076918Y (en) | 2007-09-14 | 2007-09-14 | Novel self-tightening drill chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720114882XU CN201076918Y (en) | 2007-09-14 | 2007-09-14 | Novel self-tightening drill chuck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201076918Y true CN201076918Y (en) | 2008-06-25 |
Family
ID=39568969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720114882XU Expired - Fee Related CN201076918Y (en) | 2007-09-14 | 2007-09-14 | Novel self-tightening drill chuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201076918Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017206491A1 (en) * | 2016-06-03 | 2017-12-07 | 柳尧亭 | Flat jaw self-tightening drill chuck |
-
2007
- 2007-09-14 CN CNU200720114882XU patent/CN201076918Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017206491A1 (en) * | 2016-06-03 | 2017-12-07 | 柳尧亭 | Flat jaw self-tightening 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: 20080625 Termination date: 20091014 |