CN108213478B - Drill chuck capable of increasing loosening torque - Google Patents
Drill chuck capable of increasing loosening torque Download PDFInfo
- Publication number
- CN108213478B CN108213478B CN201810125483.6A CN201810125483A CN108213478B CN 108213478 B CN108213478 B CN 108213478B CN 201810125483 A CN201810125483 A CN 201810125483A CN 108213478 B CN108213478 B CN 108213478B
- Authority
- CN
- China
- Prior art keywords
- self
- locking
- drill chuck
- locking state
- inclined plane
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 229910000639 Spring steel Inorganic materials 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000013011 mating Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
- B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
- B23B31/1207—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving obliquely to the axis of the chuck in a plane containing this axis
- B23B31/123—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving obliquely to the axis of the chuck in a plane containing this axis with locking arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gripping On Spindles (AREA)
Abstract
The invention provides a drill chuck for increasing loosening torque, which is characterized in that a self-locking and anti-loosening structure is further arranged between a rotating sleeve and a nut sleeve; the self-locking anti-loosening structure comprises an inclined plane and a matching part matched with the inclined plane, wherein the matching part and the inclined plane can relatively rotate in the circumferential direction of the drill chuck to be separated and combined, when the drill chuck is in a self-locking state, the matching part and the inclined plane are in a squeeze friction matching state, and when the drill chuck is in a self-locking state to a non-self-locking state, the matching part and the inclined plane are separated. The invention provides high anti-back friction force in a self-locking state through the cooperation of the clutchable inclined planes, increases the loosening torque, plays a role in preventing loosening, and can prevent the drill chuck from exiting the self-locking state due to the inertia effect in the emergency stop under the occasion of high-speed rotation. And the nut sleeve is not required to be made of spring steel and heat treatment is not required. Compared with the prior art, the locking device has the advantages of reasonable structure, simplicity in manufacture and good locking and anti-loosening performances.
Description
Technical Field
The invention relates to a drill chuck.
Background
In the prior art, a drill body, clamping jaws, nuts, bearings, gaskets, a rotary sleeve and a rear sleeve are arranged in a drill chuck, and the clamping jaws are driven to move forwards or backwards by rotating the nuts so as to clamp or loosen a drilling tool. The self-locking structure in the drill chuck is a structure for preventing the drill chuck from being loosened by the reaction force applied to the drill chuck during operation, and is generally matched by a part with a spring piece and teeth on the drill body. The self-locking drill chuck can exit from a self-locking state under the inertia effect once suddenly stopping under the occasion of high-speed rotation.
The locking structure of the hand drill chuck of U.S. patent No. 5765839a is based on the existing hand drill chuck, the outer circular ratchet at the front end of the drill body is added, a spring piece is arranged on a nut sleeve, a locking bulge is arranged on the spring piece, a lock head is arranged at the end of the locking bulge, a groove and a bulge in the front sleeve are matched with the bulge on the spring piece, and the locking structure has the defects of small locking moment and unlocking moment and easy release of the front sleeve during clutch vibration test and real impact test. The hand drill chuck of Chinese patent No. 201521060623.4 is formed by adding one or two elastic bulges on the basis of the hand drill chuck of the U.S. Pat. No. 5765839A, and the parts provided with the elastic bulges are generally made of spring steel materials such as 65Mn and the like, can be used after heat treatment and have elasticity, and have higher requirements on heat treatment, and the elastic bulges always have an elastic compression and release process in the process of clamping and loosening the drill chuck, so that the service life of the elastic bulges has a certain limitation.
Disclosure of Invention
The invention aims to provide a drill chuck capable of increasing loosening torque so as to solve the problem that the drill chuck exits from a self-locking state due to sudden stop under the condition of high-speed rotation. For this purpose, the invention adopts the following technical scheme:
The drill chuck comprises a rotary sleeve, a drill body, a nut sleeve, clamping jaws and a self-locking structure, wherein the self-locking structure comprises teeth and a spring piece, the teeth are positioned on the drill body or on a part fixed on the drill body, the spring piece is provided with a locking end matched with the teeth, the rotary sleeve is provided with a part connected with the spring piece in a self-locking state and a part connected with the spring piece in an non-self-locking state, and a cam structure for controlling the spring piece to be matched with the locking end, and the drill chuck is further provided with a self-locking and anti-loosening structure between the rotary sleeve and the nut sleeve; the method is characterized in that: the self-locking anti-loosening structure comprises an inclined plane and a matching part matched with the inclined plane, the matching part and the inclined plane can relatively rotate in the circumferential direction of the drill chuck to be separated and combined, when the drill chuck is in a self-locking state, the matching part and the inclined plane are in a squeeze friction matching state, and when the drill chuck is out of the self-locking state to be in a non-self-locking state, the matching part and the inclined plane are separated.
Further, the mating portion is located on the swivel sleeve and the bevel is located on the nut sleeve.
Further, the mating portion and the bevel are on the swivel sleeve and the nut sleeve, respectively.
Further, a driving groove is formed in the nut sleeve, a driving key matched with the driving groove is arranged on the rotating sleeve, the groove length of the driving groove is larger than that of the driving key, and the difference value of the groove length is consistent with the rotating angle of the rotating sleeve when the drill chuck is in a self-locking state from a non-self-locking state.
Further, the driving groove is positioned between the inner circular arc walls at the front end of the nut sleeve, and the inclined surface is positioned on the inner circular arc walls.
By adopting the technical scheme of the invention, the self-locking friction force is high in the self-locking state through the cooperation of the clutchable inclined planes, the loosening torque is increased, the anti-loosening effect is achieved, and the drill chuck can be prevented from exiting the self-locking state due to the inertia effect in the emergency stop under the occasion of high-speed rotation. And the nut sleeve is not required to be made of spring steel and heat treatment is not required. Compared with the prior art, the locking device has the advantages of reasonable structure, simplicity in manufacture and good locking and anti-loosening performances.
Drawings
Fig. 1 is a schematic semi-sectional view of example 1 provided by the present invention.
Fig. 2 is an exploded view of the embodiment shown in fig. 1.
Fig. 3 is a schematic view of the swivel case of the embodiment of fig. 1.
Fig. 4 is a top view of the swivel case of the embodiment of fig. 1.
Fig. 5 is a schematic view of the nut case of the embodiment shown in fig. 1.
Fig. 6 is a schematic view of the spring plate of the embodiment shown in fig. 1.
Fig. 7 is a schematic view of the drill body of the embodiment of fig. 1.
Fig. 8 is a schematic diagram showing the cooperation of the self-locking and anti-loosening structure in the unlocked state.
Fig. 9 is a schematic diagram of the self-locking and anti-loosening structure in the locked state.
Detailed Description
Reference is made to the accompanying drawings. The invention provides a drill chuck for increasing loosening torque, which comprises a rotary sleeve 8, a drill body 1, a nut 2, a nut sleeve 7, clamping jaws 3 and a self-locking structure, wherein the self-locking structure comprises teeth 11 and a spring piece 6, the teeth 11 are positioned on the drill body 1, the spring piece 6 is provided with a locking end 61 matched with the teeth, the rotary sleeve 8 is provided with a part 84 connected with the spring piece 6 in a self-locking state and a part 83 connected with the spring piece in an unlocking state, two sides of the spring piece 6 are respectively provided with a locking end bulge 62 and a positioning bulge 63, the locking end bulge 62 and the positioning bulge 63 are respectively clamped on two mounting holes 72 on the nut sleeve, and a cam surface 85 for the locking end bulge 62 is also arranged in the rotary sleeve.
The drill chuck is further provided with a self-locking and anti-loosening structure between the rotary sleeve 8 and the nut sleeve 7, the self-locking and anti-loosening structure comprises an inclined surface 73 and a matching part 81 matched with the inclined surface 73, the matching part 81 and the inclined surface 73 can relatively rotate in the circumferential direction of the drill chuck to be separated and combined, when the drill chuck is in a self-locking state, the matching part 81 and the inclined surface 73 are in a squeezed friction matching state, and when the drill chuck exits from the self-locking state to a non-self-locking state, the matching part 81 and the inclined surface 73 are separated.
The engagement portion 81 may be a solid body in the form of a bar or a block, preferably on the rotating sleeve 8, and the inclined surface 73 is preferably on the nut sleeve 7. The nut sleeve 7 is provided with a mating part disengaging concave area 74 corresponding to the non-self-locking state before the inclined surface 73, and when the mating part 81 is disengaged from the inclined surface 73, the mating part 81 is rotated to be disengaged from the concave area 74.
The nut sleeve 7 is provided with a driving groove 70, the rotary sleeve 8 is provided with a driving key 82 matched with the driving groove 70, the groove length of the driving groove 70 is longer than the length of the driving key 82, and the difference value of the groove length is consistent with the rotating angle of the rotary sleeve 8 when the drill chuck is in a self-locking state from a non-self-locking state. The drive groove 70 is located between the inner circular arc walls 71 at the front end of the nut housing, and the inclined surface 73 is located on the inner circular arc walls 71.
The above embodiments are merely examples of the present invention, but the present invention is not limited thereto, and any changes or modifications made by those skilled in the art are included in the scope of the present invention.
Claims (3)
1. The drill chuck comprises a rotary sleeve, a drill body, a nut sleeve, clamping jaws and a self-locking structure, wherein the self-locking structure comprises teeth and a spring piece, the teeth are positioned on the drill body or on a part fixed on the drill body, the spring piece is provided with a locking end matched with the teeth, the rotary sleeve is provided with a part connected with the spring piece in a self-locking state and a part connected with the spring piece in an non-self-locking state, and a cam structure for controlling the spring piece to be matched with the locking end, and the drill chuck is further provided with a self-locking and anti-loosening structure between the rotary sleeve and the nut sleeve; the method is characterized in that: the self-locking anti-loosening structure comprises an inclined plane and a matching part matched with the inclined plane, the matching part and the inclined plane can relatively rotate in the circumferential direction of the drill chuck to be separated and combined, when the drill chuck is in a self-locking state, the matching part and the inclined plane are in a squeeze friction matching state, and when the drill chuck is out of the self-locking state to be in a non-self-locking state, the matching part and the inclined plane are separated;
the matching part is positioned on the rotary sleeve, and the inclined plane is positioned on the nut sleeve;
The nut is sleeved on the inclined surface, the nut is provided with a corresponding non-self-locking state matching part separating concave area in front of the inclined surface, and the matching part is rotated to be separated from the inclined surface when separating from the concave area.
2. The drill chuck for increasing loosening torque as set forth in claim 1, wherein the nut sleeve is provided with a driving groove, the rotating sleeve is provided with a driving key matched with the driving groove, the groove length of the driving groove is longer than the length of the driving key, and the difference value is consistent with the rotating angle of the rotating sleeve when the drill chuck is from a non-self-locking state to a self-locking state.
3. A drill chuck for increasing loosening torque as in claim 2, wherein said drive slot is located between inner arcuate walls at the forward end of the nut housing, said chamfer being located on said inner arcuate walls.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820096090 | 2018-01-19 | ||
| CN2018200960902 | 2018-01-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108213478A CN108213478A (en) | 2018-06-29 |
| CN108213478B true CN108213478B (en) | 2024-07-12 |
Family
ID=62670769
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810125483.6A Active CN108213478B (en) | 2018-01-19 | 2018-02-08 | Drill chuck capable of increasing loosening torque |
| CN201820219141.6U Expired - Fee Related CN208019448U (en) | 2018-01-19 | 2018-02-08 | A kind of drill chuck increasing release torque |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820219141.6U Expired - Fee Related CN208019448U (en) | 2018-01-19 | 2018-02-08 | A kind of drill chuck increasing release torque |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN108213478B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108213478B (en) * | 2018-01-19 | 2024-07-12 | 浙江三鸥机械股份有限公司 | Drill chuck capable of increasing loosening torque |
| CN110961666B (en) * | 2018-09-29 | 2024-12-17 | 浙江三鸥机械股份有限公司 | Self-locking drill chuck |
| CN109158628A (en) * | 2018-10-04 | 2019-01-08 | 台州市益福机械制造有限公司 | A kind of New type bit holder |
| CN110508839A (en) * | 2019-07-02 | 2019-11-29 | 山东威达雷姆机械有限公司 | A kind of anti-loosening locking drill chuck |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206200161U (en) * | 2016-11-07 | 2017-05-31 | 浙江三鸥机械股份有限公司 | A kind of Self-locking drill-chuck |
| CN208019448U (en) * | 2018-01-19 | 2018-10-30 | 浙江三鸥机械股份有限公司 | A kind of drill chuck increasing release torque |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4238503C1 (en) * | 1992-11-14 | 1993-11-25 | Roehm Guenter H | Drill chuck |
| CN2582790Y (en) * | 2002-11-25 | 2003-10-29 | 山东威达机械股份有限公司 | Self-locking drill chuck |
| CN2585725Y (en) * | 2002-12-09 | 2003-11-12 | 山东威达机械股份有限公司 | Self-locking drill chuck |
| CN2776598Y (en) * | 2005-03-08 | 2006-05-03 | 山东威达机械股份有限公司 | Self-locking anti-loose drill chuck |
| CN2865943Y (en) * | 2006-03-08 | 2007-02-07 | 浙江三鸥机械股份有限公司 | Hand tightening drill chuck with boosting |
| CN101077536B (en) * | 2006-05-23 | 2010-12-01 | 山东威达机械股份有限公司 | Slanting wedge face locking drill clamping chuck |
| DE102010001013B4 (en) * | 2009-01-19 | 2022-07-07 | Shandong Weida Machinery Co. Ltd. | Power-increasing self-locking drill chuck and its self-locking device |
| CN102001006B (en) * | 2009-09-01 | 2015-06-10 | 山东威达机械股份有限公司 | Reinforcing self-locking drill chuck and self-locking mechanism thereof |
| CN201493496U (en) * | 2009-07-10 | 2010-06-02 | 山东威达机械股份有限公司 | Hand tight drill chuck |
| CN201677051U (en) * | 2010-01-18 | 2010-12-22 | 山东威达机械股份有限公司 | Force increasing self-locking drill chuck and self-locking mechanism thereof |
| CN202779945U (en) * | 2012-08-01 | 2013-03-13 | 山东威达机械股份有限公司 | Drill chuck |
| CN203900573U (en) * | 2014-06-30 | 2014-10-29 | 李新平 | Clamping self-locking mechanism on hand-tight drill chuck |
-
2018
- 2018-02-08 CN CN201810125483.6A patent/CN108213478B/en active Active
- 2018-02-08 CN CN201820219141.6U patent/CN208019448U/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206200161U (en) * | 2016-11-07 | 2017-05-31 | 浙江三鸥机械股份有限公司 | A kind of Self-locking drill-chuck |
| CN208019448U (en) * | 2018-01-19 | 2018-10-30 | 浙江三鸥机械股份有限公司 | A kind of drill chuck increasing release torque |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108213478A (en) | 2018-06-29 |
| CN208019448U (en) | 2018-10-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108213478B (en) | Drill chuck capable of increasing loosening torque | |
| CN100574993C (en) | Hand-held power tools with tool clamps | |
| JP5043687B2 (en) | Tool including swing bolt structure | |
| WO2021000550A1 (en) | Anti-loosening locking drill chuck | |
| WO2002100584A9 (en) | Chuck | |
| US7125021B2 (en) | Self-locking drill chuck | |
| JPS63185503A (en) | Chuck for machine tool | |
| JPH0325282B2 (en) | ||
| JP2006326831A (en) | Clamp structure for tool with handle | |
| JPS60213402A (en) | Bite attaching apparatus | |
| JP7274593B2 (en) | CLUTCH DEVICE, DRILL CHUCK, POWER TOOL AND METHOD OF TWO-DIRECTIONAL ROTATING OF DRILL CHUCK | |
| KR100487273B1 (en) | Adjustable reaction arm for torque power tool, and torque power tool provided therewith | |
| CN112388342B (en) | Anti-loose clamping chuck structure | |
| CN101386164B (en) | Tool screwdriver head torsion releasing and clutch structure | |
| CN110000738B (en) | Assembling tool for bolt | |
| JP4156976B2 (en) | Connecting device for tire molding drum | |
| US11173586B2 (en) | Disengaging socket extension | |
| JPS62271609A (en) | Device for fixing work holder operated by power to rotary spindle of machine tool in exchangeable manner | |
| WO2022057945A9 (en) | Engagement and release device having range of motion, and angle grinder having same | |
| EP1779948A1 (en) | A manual self-locking drill chuck | |
| CN201493496U (en) | Hand tight drill chuck | |
| JPS61501790A (en) | clutch device | |
| CN218030193U (en) | Hob assembly | |
| CN112901621A (en) | Multipurpose expansion screw and tightening tool | |
| KR20180130224A (en) | Hexagonal one-touch chuck for electric drill |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |