CN219945280U - Dustproof drill chuck - Google Patents
Dustproof drill chuck Download PDFInfo
- Publication number
- CN219945280U CN219945280U CN202321190690.2U CN202321190690U CN219945280U CN 219945280 U CN219945280 U CN 219945280U CN 202321190690 U CN202321190690 U CN 202321190690U CN 219945280 U CN219945280 U CN 219945280U
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- CN
- China
- Prior art keywords
- arc
- wall
- shaped
- sealing
- front sleeve
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- 238000007789 sealing Methods 0.000 claims description 44
- 238000002347 injection Methods 0.000 claims description 17
- 239000007924 injection Substances 0.000 claims description 17
- 239000000428 dust Substances 0.000 claims description 6
- 238000001746 injection moulding Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000005553 drilling Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004568 cement Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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- Gripping On Spindles (AREA)
Abstract
The utility model relates to the technical field of drill chucks, in particular to a dustproof drill chuck, which comprises a drill body, a nut, clamping jaws and a front sleeve, wherein the clamping jaws are inserted into the drill body through clamping jaw holes and are in threaded connection with the nut, and the front sleeve is sleeved on the outer side of the nut.
Description
Technical Field
The utility model relates to the technical field of drill chucks, in particular to a dustproof drill chuck.
Background
As is well known, the drill chuck is generally used for clamping a working head such as a drilling tool, and the like, and can be arranged on a lathe, a milling machine, a drilling machine, a woodworking planer, an electric drill and the like for use, the drill chuck comprises a drill body, a nut, clamping jaws and a front sleeve, the clamping jaws are inserted into the drill body through clamping jaw holes, the clamping jaws are in threaded connection with the nut, the front sleeve is sleeved on the outer side of the nut, a plurality of injection points for injection molding are uniformly distributed in the circumferential direction of the inner side of the front sleeve for the attractiveness of the front sleeve, but the inner wall of the front sleeve around the injection points is uneven due to the existence of the injection points, so that gaps are formed by the combination between the front sleeve and the front end of the drill body, and in the use process, dust such as cement, wood cutting enters the chuck through the gaps between the front sleeve and the drill body, so that the clamping jaws and the nut do not move flexibly and even are blocked.
Disclosure of Invention
The utility model aims to solve the defects of the prior art and provides the dustproof drill chuck which is simple in structure, good in dustproof effect and strong in sealing performance.
The technical scheme adopted for solving the technical problems is as follows:
the dustproof drill chuck comprises a drill body, a screw nut, clamping jaws and a front sleeve, wherein the clamping jaws are inserted into the drill body through clamping jaw holes, the clamping jaws are in threaded connection with the screw nut, the front sleeve is sleeved on the outer side of the screw nut, at least two arc-shaped protrusions integrally formed with the front sleeve are arranged on the circumferential direction of the front end part of the inner wall of the front sleeve, a gap between every two adjacent arc-shaped protrusions is provided with a sealing protrusion integrally formed with the arc-shaped protrusions and the front sleeve, and the inner wall radian of the sealing protrusion or the inner wall radian of the arc-shaped protrusion or the inner wall radian of the sealing protrusion and the inner wall radian of the arc-shaped protrusion are matched with the outer wall radian of the drill body and are in gap connection.
The closing protrusions are arranged at the front side, the rear side or the middle part of a gap between adjacent arc-shaped protrusions.
The gap between the arc plate-shaped bulges is an injection area for injection molding.
The inner diameter of the sealing bulge is the same as that of the arc plate-shaped bulge.
The utility model discloses an arc plate-shaped bulge or a front cover with an opening in the middle is arranged between a drill body and a front sleeve on the front side of the arc plate-shaped bulge or the front side of the closed bulge, the inner wall of the front cover is connected with the front end of the drill body in an interference fit manner, and the outer wall of the front cover is connected with the inner wall of the front sleeve in a clearance fit manner, so that the front cover, the closed bulge, the arc plate-shaped bulge, the drill body and the front sleeve form a closed shape.
The inner diameter of the sealing bulge is the same as that of the arc plate-shaped bulge, or the inner diameter of the sealing bulge is larger than that of the arc plate-shaped bulge, or the inner diameter of the sealing bulge is smaller than that of the arc plate-shaped bulge.
The arc plates are uniformly distributed on the circumferential direction of the inner wall of the front sleeve.
Due to the adoption of the structure, the utility model has the advantages of simple structure, good dustproof effect, strong sealing performance and the like.
Drawings
Fig. 1 is a schematic structural view of embodiment 1 of the present utility model.
Fig. 2 is a schematic view of the front cover of fig. 1.
Detailed Description
The utility model is further described below with reference to the accompanying drawings:
as shown in the attached drawing, the dustproof drill chuck comprises a drill body 1, a nut 8, clamping jaws 7 and a front sleeve 4, wherein the clamping jaws 7 are inserted into the drill body 1 through clamping jaw holes, the clamping jaws 7 are in threaded connection with the nut 8, the front sleeve 4 is sleeved on the outer side of the nut 8, the dustproof drill chuck is characterized in that at least two arc-shaped protrusions 9 which are integrally formed with the front sleeve 4 are arranged on the circumferential direction of the front end part of the inner wall of the front sleeve 4, a gap 11 between every two adjacent arc-shaped protrusions 9 is provided with a sealing protrusion 10 which is integrally formed with the arc-shaped protrusions 9 and the front sleeve 4, and the inner wall radian of the sealing protrusion 10 or the inner wall radian of the sealing protrusion 10 and the inner wall radian of the arc-shaped protrusions 9 are matched with the outer wall radian of the drill body 1 to form clearance connection.
In the scheme, the connection between the arc plate-shaped bulge 9 and the sealing bulge 10 and the outer wall of the drill body 1 is divided into the following three conditions: 1. the inner wall radian of the sealing bulge 10 is matched with the outer wall radian of the drill body 1 and is in clearance connection, 2, the inner wall radian of the arc plate-shaped bulge 9 is matched with the outer wall radian of the drill body 1 and is in clearance connection, 3, the inner wall radian of the sealing bulge 10 and the inner wall radian of the arc plate-shaped bulge 9 are matched with the outer wall radian of the drill body 1 and are in clearance connection, when no front cover exists, the connection condition between the arc plate-shaped bulge 9, the sealing bulge 10 and the outer wall of the drill body is the 3 rd, so that the sealing dustproof connection between the front cover and the drill body can be realized, the uneven plane formed by injection points can be avoided, and when the front cover exists, the connection condition between the arc plate-shaped bulge 9, the sealing bulge 10 and the outer wall of the drill body can be any one of the conditions in the 3.
Further, the closing projection 10 is provided at the front side, the rear side or the middle of the gap 11 between the adjacent arc-shaped projections 9.
Further, the gaps 11 between the arc plate-shaped bulges 9 are injection areas for injection molding.
Further, the inner diameter of the closing protrusion 10 is the same as the inner diameter of the arc-shaped protrusion 9.
Further, a front cover 3 with an opening in the middle is arranged between the drill body 1 and the front sleeve 4 at the front side of the arc plate-shaped bulge 9 or the sealing bulge 10, the inner wall of the front cover 3 is connected with the front end of the drill body 1 in an interference fit manner, and a gap 11 is connected between the outer wall of the front cover 3 and the inner wall of the front sleeve 4 in a fit manner, so that the front cover 3, the sealing bulge 10, the arc plate-shaped bulge 9, the drill body 1 and the front sleeve 4 form a sealing shape.
Further, the inner diameter of the closing protrusion 10 is the same as the inner diameter of the arc-shaped protrusion 9, or the inner diameter of the closing protrusion 10 is larger than the inner diameter of the arc-shaped protrusion 9, or the inner diameter of the closing protrusion 10 is smaller than the inner diameter of the arc-shaped protrusion 9.
When the front cover is provided, the relationship between the closing protrusion 10 and the inner diameter of the arc-shaped protrusion 9 is as follows: 1. the inner diameters of the sealing bulge 10 and the arc plate-shaped bulge 9 are the same, the sealing bulge 10 and the drill body are connected in a clearance fit manner, the inner diameter of the sealing bulge 10 is larger than the inner diameter of the arc plate-shaped bulge 9, at the moment, the radian of the inner wall of the arc plate-shaped bulge 9 is in clearance fit with the radian of the inner wall of the drill body, the sealing bulge 10 seals a gap between the front cover and the front sleeve, the inner diameter of the sealing bulge 10 is smaller than the inner diameter of the arc plate-shaped bulge 9, at the moment, the radian of the inner wall of the sealing bulge 10 is in clearance fit with the radian of the inner wall of the drill body, and the arc plate-shaped bulge 9 seals a gap between the front cover and the front sleeve.
Further, the arc plates are uniformly distributed on the circumferential direction of the inner wall of the front sleeve 4.
Example 1:
the dustproof drill chuck comprises a drill body 1, a nut 8, clamping jaws 7, a front sleeve 4, a rear sleeve 2, a steel pad 5, a bearing 6 and a front cover 3, wherein the three clamping jaws 7 are respectively arranged in three equally divided clamping jaw holes of the drill body 1 and are matched with the nut 8 by virtue of threads; the screw 8 and the screw 8 are connected by means of concave-convex grooves, the drill body 1 at the rear side of the screw 8 is sequentially sleeved with a bearing 6 and a steel pad 5, the rear sleeve 2 is covered behind the front sleeve 4 and is fixed on the drill body 1, six arc-shaped bulges 9 integrally formed with the front sleeve 4 are arranged on the circumferential direction of the front end part of the inner wall of the front sleeve 4, the six arc-shaped bulges 9 are uniformly distributed on the circumferential direction of the inner wall of the front sleeve 4, gaps 11 between adjacent arc-shaped bulges 9 are six, the gaps 11 between adjacent arc-shaped bulges 9 are provided with closed bulges 10 integrally formed with the arc-shaped bulges 9 and the front sleeve 4, the radian of the inner wall of the closed bulges 10 is matched with the radian of the outer wall of the drill body 1 and is in gap connection, the sealing bulges 10 are arranged at the front sides (preferably at the front sides and can also be arranged at the rear sides or the middle parts) of the gaps 11 between the adjacent arc-shaped bulges 9, the gaps 11 between the arc-shaped bulges 9 are injection areas in injection molding, three or six of the gaps 11 between the arc-shaped bulges 9 are injection areas, the injection areas are uniformly distributed on the circumferential direction of the front sleeve 4, any point of the inner wall of the front sleeve 4 in the injection area is an injection point in injection molding, a front cover 3 with an opening in the middle part is arranged between the drill body 1 at the front side of the arc-shaped bulges 9 or the sealing bulges 10 and the front sleeve 4, the inner wall of the front cover 3 is connected with the interference fit of the front end of the drill body 1, the outer wall of the front cover 3 is connected with the gap 11 between the inner wall of the front sleeve 4 in a matching manner, and the front cover 3 is in interference fit with the front end of the drill body 1, so that parts such as the steel pad 5, the bearing 6, the nut 8, the front sleeve 4 and the like are axially positioned.
The gap 11 between the adjacent arc-shaped bulges 9 is used for avoiding injection points formed in the injection process, the injection points are hidden in the injection area, the matching precision between the front sleeve 4 and the drill body 1 is improved, the arc-shaped bulges 9 are sealed by the sealing bulges 10, the sealing bulges 10 and the arc-shaped bulges 9 seal the space between the front sleeve 4 and the drill body 1, and the front cover 3 covers the sealing bulges 10 and the arc-shaped bulges 9, so that the front cover 3, the sealing bulges 10, the arc-shaped bulges 9, the drill body 1 and the front sleeve 4 form a sealing shape, the sealing performance is good, dust is prevented from entering, and the dust is prevented from entering the drill chuck.
Claims (7)
1. The dustproof drill chuck comprises a drill body, a screw nut, clamping jaws and a front sleeve, wherein the clamping jaws are inserted into the drill body through clamping jaw holes, the clamping jaws are in threaded connection with the screw nut, the front sleeve is sleeved on the outer side of the screw nut, at least two arc-shaped protrusions integrally formed with the front sleeve are arranged on the circumferential direction of the front end part of the inner wall of the front sleeve, a gap between every two adjacent arc-shaped protrusions is provided with a sealing protrusion integrally formed with the arc-shaped protrusions and the front sleeve, and the radian of the inner wall of the sealing protrusion or the radian of the inner wall of the arc-shaped protrusion or the radian of the inner wall of the sealing protrusion is matched with the radian of the outer wall of the drill body and is in gap connection.
2. A dust drill chuck according to claim 1, wherein the closing projection is provided on the front side, the rear side or the middle of the gap between adjacent arc-shaped projections.
3. A dust drill chuck according to claim 1, wherein the gap between adjacent arcuate projections is an injection molded injection region.
4. A dust drill chuck according to claim 1, wherein the inner diameter of the closing projection is the same as the inner diameter of the arc-shaped projection.
5. The dustproof drill chuck according to claim 1, wherein a front cover with an opening in the middle is arranged between the drill body and the front sleeve on the front side of the arc plate-shaped bulge or the sealing bulge, the inner wall of the front cover is connected with the front end of the drill body in an interference fit manner, and the outer wall of the front cover is connected with the inner wall of the front sleeve in a clearance fit manner, so that the front cover, the sealing bulge, the arc plate-shaped bulge, the drill body and the front sleeve form a sealing shape.
6. The dustproof drill chuck according to claim 5, wherein the inner diameter of the sealing protrusion is the same as the inner diameter of the arc-shaped protrusion, or the inner diameter of the sealing protrusion is larger than the inner diameter of the arc-shaped protrusion, or the inner diameter of the sealing protrusion is smaller than the inner diameter of the arc-shaped protrusion.
7. The dustproof drill chuck according to claim 1, wherein the arc plates are uniformly distributed in the circumferential direction of the inner wall of the front sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321190690.2U CN219945280U (en) | 2023-05-17 | 2023-05-17 | Dustproof drill chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321190690.2U CN219945280U (en) | 2023-05-17 | 2023-05-17 | Dustproof drill chuck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219945280U true CN219945280U (en) | 2023-11-03 |
Family
ID=88544649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321190690.2U Active CN219945280U (en) | 2023-05-17 | 2023-05-17 | Dustproof drill chuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219945280U (en) |
-
2023
- 2023-05-17 CN CN202321190690.2U patent/CN219945280U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |