CN210305808U - Hand fastening drill chuck - Google Patents
Hand fastening drill chuck Download PDFInfo
- Publication number
- CN210305808U CN210305808U CN201822056694.7U CN201822056694U CN210305808U CN 210305808 U CN210305808 U CN 210305808U CN 201822056694 U CN201822056694 U CN 201822056694U CN 210305808 U CN210305808 U CN 210305808U
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- CN
- China
- Prior art keywords
- nut
- drill chuck
- axial positioning
- hand
- 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 closeness drill chuck, its front portion of boring the body is provided with first axial positioning slot, and the anterior inner wall of its swivel mount is provided with second axial positioning slot around pressing close to the boring the body and corresponding first axial positioning slot, drill chuck still is provided with open-ended elasticity rand, elasticity rand at free state or be close free state under with first, second axial positioning slot joint, elasticity rand can embolia and enter into from the front portion of boring the body when being expanded to warp in the first axial positioning slot, second axial positioning slot have the degree of depth of deepening, the degree of depth of deepening lets the space as the deformation of rand when emboliaing the boring the body front end. The utility model discloses can not only let the hidden setting of rand in drill chuck front portion inside, and install one step and target in place, it is very convenient to can directly carry out axial location to the swivel sleeve, can cooperate with other structures of drill chuck, provide the structure simpler, keep the low-cost drill chuck of precision.
Description
Technical Field
The utility model relates to a hand-tight drill chuck.
Background
The hand-tightened drill chuck is internally provided with a drill body, a clamping jaw and a nut, the nut is in threaded connection with the clamping jaw, a rotating sleeve is arranged in the hand-tightened drill chuck, the rotating sleeve is directly connected with the nut or is connected with the nut through a connecting structure, and the rotating sleeve is operated by hand to rotate the nut so as to drive the clamping jaw to move forwards or backwards to enable the clamping jaw to clamp or loosen the drill bit. In order to axially position the rotating sleeve, the front end of the rotating sleeve is axially limited through the front end cap, the rear end of the rotating sleeve is limited through other structures, and a backward concave groove is usually formed in the front end cap and used for placing a clamp spring connected with the drill body and used for limiting the front end of the front end cap. This structure has many mounting steps related to the front end restriction, and the front end restriction structure is exposed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a closefisted drill chuck, its limit structure is simple, the installation procedure is few and can hidden setting. Therefore, the utility model adopts the following technical scheme.
A kind of hand-tightened drill chuck, there are bit bodies, clamping jaw, nut, swivel sleeve, have oblique clamping jaw hole in the bit body, the nut is connected with clamping jaw screw thread, the swivel sleeve is connected with nut directly or through the linkage; the drill chuck is characterized in that a first axial positioning clamping groove is formed in the front portion of the drill body, a second axial positioning clamping groove is formed in the inner wall of the front portion of the rotary sleeve, the inner wall of the front portion of the rotary sleeve surrounds the drill body and corresponds to the first axial positioning clamping groove, an open elastic clamping ring is further arranged on the drill chuck, the elastic clamping ring is clamped with the first axial positioning clamping groove and the second axial positioning clamping groove in a free state or a state close to the free state, the elastic clamping ring can be sleeved into the first axial positioning clamping groove from the front portion of the drill body when being expanded and deformed, the second axial positioning clamping groove is provided with a deepened depth, and the deepened depth is used as a deformation yielding space of the clamping ring when the front end of the.
Further, the rear part of the rotating sleeve abuts against the nut or a nut sleeve outside the nut.
Furthermore, a collar narrowing part is arranged on the inner side of the middle part of the collar.
Further, the nut is limited from the front by the rotating sleeve.
Further, the drill body of the drill chuck is not provided with a nut groove.
Further, the rotating sleeve is connected with the nut or a nut sleeve outside the nut in an interference fit mode.
Furthermore, the drill chuck is provided with a structure for limiting the radial periphery of the nut.
Furthermore, a circle of steel balls are padded behind the nut, the steel balls are padded on a gasket, the gasket is supported on a step in the middle of the drill body, a bent part is arranged on the periphery of the gasket, and the bent part forms a structure for limiting the radial periphery of the nut.
Further, the inner peripheral wall of the washer and the drill body are in interference fit, the inclined jaw hole is formed by punching the combination of the washer and the drill 1 as a whole, the washer also has a jaw groove at a portion where the jaw passes, the jaw groove has an inclined profile wall extending from the jaw hole, and the partial profile wall is an inclined circular arc wall.
Owing to adopt the technical scheme of the utility model, can not only let the hidden setting of rand in the anterior inside first axial positioning slot and the second axial positioning slot of drill chuck, and install one step and target in place, it is very convenient to can directly carry out axial location to the swivel sleeve, can cooperate with other structures of drill chuck, provide the structure simple more, keep the low-cost drill chuck of precision.
Drawings
Fig. 1 is a cross-sectional view of an embodiment provided by the present invention.
Fig. 2 is an exploded view of an embodiment of the present invention.
Fig. 3 is a schematic view of a collar according to an embodiment of the present invention.
Detailed Description
Referring to the drawings, the utility model provides a closefisted drill chuck, including swivel mount 1, bore the body 5, nut 2 and three clamping jaws 6, nut 2 and the 6 threaded connection of three clamping jaws, bore the body 5 and set up the clamping jaw hole 52 of slope, clamping jaw 6 passes clamping jaw hole 51, can slide around clamping jaw hole 52 under the drive of nut 2. A circle of steel balls 3 are padded around the drill body 5 at the rear part of the nut 2, the drill body 5 is provided with a middle step 50, and a gasket 7 sleeved outside the drill body is arranged on the middle step.
The front part of the drill body is provided with a first axial positioning clamping groove 51, the inner wall 10 of the front part of the rotary sleeve surrounds and is close to the drill body and is provided with a second axial positioning clamping groove 11 corresponding to the first axial positioning clamping groove 51, the drill chuck is also provided with an open elastic retainer ring 8, the elastic retainer ring 8 is clamped with the first axial positioning clamp groove 51 and the second axial positioning clamp groove 11 in a free state or a state close to the free state, for example, the inner diameter of the elastic retainer ring 8 is smaller than the diameter of a notch of the first axial positioning clamp groove 51 or an inward bulge is arranged, the outer diameter of the rotary sleeve is larger than the inner diameter of the front part of the rotary sleeve, so that the rotary sleeve 1 is limited in the front and back direction and is axially positioned, the collar 8 can telescope from the front of the drill body into the first axial detent 51 when being expanded and deformed, the second axial positioning slot 11 has a deepened depth 111, and the deepened depth 111 is used as a deformation yielding space for the collar 8 when being sleeved into the front end of the drill body.
During installation, the clamping ring can be firstly installed and clamped in the second axial positioning clamping groove 11 of the rotary sleeve to form a pre-assembly body, then the pre-assembly body is sleeved in from the front part of the drill body 5, the clamping ring 8 deforms and expands, and when the pre-assembly body slides to be aligned with the first axial positioning clamping groove 51, the clamping ring returns to be clamped in the first axial positioning clamping groove 51 and simultaneously keeps clamping with the second axial positioning clamping groove 11. The installation is in place by one step, is very convenient, and can directly carry out axial location to the rotating sleeve.
The inner side of the middle part of the clamping ring 8 is provided with a clamping ring narrowing part 81 to facilitate the expansion deformation and the recovery of the clamping ring, so that the installation becomes easier.
The rotating sleeve can be connected with the nut through key groove matching to drive the nut to rotate. In cooperation with the above axial structure, preferably, the rear portion of the rotary sleeve 1 abuts against the nut 2 or a nut sleeve outside the nut 2. The handling drill body continues to act as a central axis for the nut and the drill chuck is further provided with a structure for limiting the radial periphery of the nut, so that the nut 2 is not inclined even if the drill body 5 is not provided with a nut groove and has a reduced diameter. In case the drill body is not provided with nut grooves to limit the nut, the nut 2 can be limited from the front by the rotating sleeve 1 and from the rear by the drill body middle step 50. A circle of steel balls 3 are padded behind the nut, the steel balls 3 are padded on a gasket 7, the gasket 7 is supported on a middle step 50 of the drill body,
the ring of steel balls 3 can be combined with the bearing frame 30 to form a bearing component, and the ring frame 30 is not arranged. The steel ball 3 can wrap bearing grease.
The rotating sleeve 1 can also be connected with the nut 2 or a nut sleeve outside the nut in an interference fit manner to drive the nut to rotate, and meanwhile, the nut and the rotating sleeve are supported at the rear part.
The inner peripheral wall of the washer 7 is in interference fit with the drill body, the connection strength is high, the washer 7 can be used as an integrated structure combined together, the drilling operation can be endured, the inclined clamping jaw hole 51 is formed by drilling when the combination of the washer 7 and the drill body 1 is viewed as a whole, the washer 7 is also provided with a clamping jaw groove 71 at the part where the clamping jaw 6 passes through, the clamping jaw groove 71 is provided with an inclined profile wall 711 extending from the clamping jaw hole 51, the partial profile wall 711 is an inclined arc wall, and the central angle is larger than 180 degrees, so that the packing effect on the clamping jaw is better, and the posture of the clamping jaw is more stable.
The periphery of the gasket 7 is provided with a bent part 70, and the bent part 70 forms the structure for limiting the radial periphery of the nut.
The above description is only an embodiment of the present invention, but the structural features of the present invention are not limited thereto, and any changes or modifications within the scope of the present invention by those skilled in the art are covered by the present invention.
Claims (9)
1. A kind of hand-tightened drill chuck, there are bit bodies, clamping jaw, nut, swivel sleeve, have oblique clamping jaw hole in the bit body, the nut is connected with clamping jaw screw thread, the swivel sleeve is connected with nut directly or through the linkage; the drill chuck is characterized in that a first axial positioning clamping groove is formed in the front portion of the drill body, a second axial positioning clamping groove is formed in the inner wall of the front portion of the rotary sleeve, the inner wall of the front portion of the rotary sleeve surrounds the drill body and corresponds to the first axial positioning clamping groove, an open elastic clamping ring is further arranged on the drill chuck, the elastic clamping ring is clamped with the first axial positioning clamping groove and the second axial positioning clamping groove in a free state or a state close to the free state, the elastic clamping ring can be sleeved into the first axial positioning clamping groove from the front portion of the drill body when being expanded and deformed, the second axial positioning clamping groove is provided with a deepened depth, and the deepened depth is used as a deformation yielding space of the clamping ring when the front end of the.
2. A hand-held drill chuck according to claim 1, wherein the rear portion of said rotary sleeve abuts against said nut or a nut sleeve external to said nut.
3. A hand drill chuck according to claim 1, wherein the collar is provided with a collar narrowing region on the inner side of the middle portion of the collar.
4. A hand-held drill chuck according to claim 1, wherein the nut is retained from the front by a rotary sleeve.
5. A hand-held drill chuck according to claim 1, wherein the drill body of the drill chuck is not provided with nut grooves.
6. A hand-held drill chuck according to claim 1, wherein the rotary sleeve is in interference fit with the nut or a nut sleeve outside the nut.
7. A hand-held drill chuck according to claim 1, 2, 3, 4, 5 or 6, characterised in that the drill chuck is provided with means for limiting the radial periphery of the nut.
8. The hand-held drill chuck according to claim 7, wherein a ring of steel balls are padded behind the nut, the steel balls are padded on a gasket, the gasket is supported on a step in the middle of the drill body, the periphery of the gasket is provided with a bent part, and the bent part forms the structure for limiting the radial periphery of the nut.
9. A hand drill chuck according to claim 8, wherein the inner peripheral wall of the spacer is interference fitted with the drill body, the inclined jaw holes are formed by drilling the combination of the spacer and the drill body as a whole, the spacer also has jaw grooves at the portions where the jaws pass, the jaw grooves have inclined profile walls from which the jaw holes extend, the inclined profile walls being inclined circular arc walls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822056694.7U CN210305808U (en) | 2018-12-07 | 2018-12-07 | Hand fastening drill chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822056694.7U CN210305808U (en) | 2018-12-07 | 2018-12-07 | Hand fastening drill chuck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210305808U true CN210305808U (en) | 2020-04-14 |
Family
ID=70121427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822056694.7U Expired - Fee Related CN210305808U (en) | 2018-12-07 | 2018-12-07 | Hand fastening drill chuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210305808U (en) |
-
2018
- 2018-12-07 CN CN201822056694.7U patent/CN210305808U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200414 Termination date: 20201207 |