CN201091927Y - Self-locking hand-holding drill chuck - Google Patents
Self-locking hand-holding drill chuck Download PDFInfo
- Publication number
- CN201091927Y CN201091927Y CNU200720176912XU CN200720176912U CN201091927Y CN 201091927 Y CN201091927 Y CN 201091927Y CN U200720176912X U CNU200720176912X U CN U200720176912XU CN 200720176912 U CN200720176912 U CN 200720176912U CN 201091927 Y CN201091927 Y CN 201091927Y
- Authority
- CN
- China
- Prior art keywords
- locking
- self
- rotary sleeve
- drill
- nut
- 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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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
-
- 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
- B23B31/1238—Jaws movement actuated by a nut with conical screw-thread
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2231/00—Details of chucks, toolholder shanks or tool shanks
- B23B2231/38—Keyless chucks for hand tools
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gripping On Spindles (AREA)
- Drilling And Boring (AREA)
Abstract
The utility model provides a self-locking hand drill chuck, comprising a drill body, a claw, an axially positioned rotary sleeve, a nut, and a rear sleeve behind the rotary sleeve; the claw is connected with the nut by a thread; the rear end of the rotary sleeve is internally provided with a concave trough which participates in the self-locking; the drill chuck is provided with a ring-shaped element which can not be rotated corresponding to the drill body at the rear part of the drill body; the ring-shaped element is provided with a spring leaf which also participates in the self-locking; the spring leaf is provided with a self-locking position which is matched with the internal concave trough at the rear end of the rotary sleeve; the rear sleeve can be rotatable in the circumferential direction; the front end in the rear sleeve is provided with a control structure which controls the locking match state between the spring leaf and the internal concave trough at the rear end of the rotary sleeve and a control structure which controls the non-locking match state of the spring leaf and the internal concave trough at the rear end of the rotary sleeve; the external surface at the front part of the drill body is connected with a fixed central gear; the drill chuck is also provided with a plurality of planetary gears which are matched with a central gear and connected with the nut between the rotary sleeve and the drill body; the internal surface of the rotary sleeve is provided with a tooth which is matched with the planetary gear; the self-locking hand drill chuck has the advantages of reasonable structure, high clamping force, and having the self-locking function.
Description
Technical field
The utility model relates to a kind of drill chuck, relates in particular to a kind of for example drill chuck on drilling machine, the electric drill of machining equipment and electric tool that is installed in.
Background technology
In the prior art, be provided with drill body, jaw, nut, rotatable rotary cover, back cover in the hand fastening drill clutch, rotary sleeve axially is positioned, three jaws are separately positioned in three inclined holes that are distributed on the drill body, adopt between nut and the jaw and be threaded, thereby driving nut rotation drive jaw by the operation rotary sleeve passes in and out in inclined hole to clamp or the drilling tool that gets loose, the shortcoming of these drill chucks is: under the load that the is hit effect, the drill bit of jaw clamping is easily loosening to skid even comes off, and is difficult to keep the continuity of processing.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of loosening self-locking type clamping head of hand-locking drill that skids that is difficult under impact loading.For this reason, the utility model is by the following technical solutions: it comprise drill body, jaw, axial location rotary sleeve, nut, be in the back cover at rotary sleeve rear, jaw is connected with nut thread, be provided with the groove that participates in self-locking in the rear end of described rotary sleeve, described drill chuck is provided with the round element that can not rotate relative to drill body at the rear portion of drill body, described round element is provided with the spring leaf that participates in self-locking, and described spring leaf is provided with the self-locking position that cooperates with described rotary sleeve rear end inner groovy; Described back cover is circumferentially rotatable, and the front end in the cover of back is provided with control spring sheet and the control configuration of rotary sleeve rear end inner groovy locking mated condition and the control configuration of control spring sheet and the non-locking mated condition of rotary sleeve rear end inner groovy; The forward outer surface of described drill body is connected with motionless central gear, and described drill chuck also is provided with the planetary gears that are connected with nut some and that central gear cooperates between rotary sleeve and drill body, and the inner surface of described rotary sleeve is provided with the tooth that cooperates with planetary gear.Owing to adopt the technical solution of the utility model, the utility model is rational in infrastructure, the cooperation that can pass through rotary sleeve, planetary gear and nut obtains higher clamping force, and, can also spring leaf be cooperated with rotary sleeve rear end inner groovy by back cover control, realize auto-lock function, even make to be subjected under the impact loading, the drill bit of jaw clamping is difficult for loosening skidding and comes off.
Description of drawings
Fig. 1 partly cuts open schematic diagram for a kind of embodiment of the utility model.
Fig. 2 is the A-A cutaway view of Fig. 1 under the locking state.
Fig. 3 is the B-B cutaway view of Fig. 1.
Fig. 4 is the explosive view of Fig. 1.
Fig. 5 is the stereogram of round element embodiment illustrated in fig. 1.
Fig. 6 is the stereogram of back embodiment illustrated in fig. 1 cover.
Fig. 7 is nut embodiment illustrated in fig. 1 and planetary cooperation schematic diagram.
Fig. 8 is the stereogram of rotary sleeve embodiment illustrated in fig. 1.
The specific embodiment
With reference to accompanying drawing.The utility model comprise drill body 1, jaw 4, axial location rotary sleeve 2, nut 3, be in the back cover 6 at rotary sleeve rear, jaw is connected with nut thread, be provided with the groove 21 that participates in self-locking in the rear end of described rotary sleeve, described drill chuck is provided with the round element 5 that can not rotate relative to drill body at the rear portion of drill body, described round element is provided with the spring leaf 51 that participates in self-locking, and described spring leaf is provided with the self-locking position 53 that cooperates with described rotary sleeve rear end inner groovy; Described back cover is circumferentially rotatable, and the front end in the cover of back is provided with control spring sheet and the control configuration 61 of rotary sleeve rear end inner groovy locking mated condition and the control configuration 62 of control spring sheet and the non-locking mated condition of rotary sleeve rear end inner groovy; The forward outer surface of described drill body is connected with motionless central gear 11, described drill chuck also is provided with the planetary gears that are connected with nut 7 some and that central gear cooperates between rotary sleeve and drill body, the inner surface of described rotary sleeve is provided with the tooth 22 that cooperates with planetary gear.
Described round element 5 can realize in the following way that it can not rotate relative to drill body: as shown in Figure 5, the inner ring of round element 5 has rotation stop edge 54, and is corresponding, and drill body also has the limit that cooperates with rotation stop edge 54.
In the present embodiment, the self-locking position 53 of described spring leaf is a projection outside on the spring leaf, and the groove 21 that cooperates with the self-locking position can be a deep-slotted chip breaker as shown in the figure.The self-locking position of described spring leaf also can be the perk of spring leaf end, and groove 21 can be the serrate slot that is formed by tooth.Described control configuration 62 and 61 adopts groove, and as shown in the figure, the groove that control configuration 61 is adopted is compared with the groove that control configuration 62 is adopted, and the distance between its bottom land and the drill chuck center line is bigger.
In the present embodiment, be positive direction with the direction of rotation of clamping work pieces, the control configuration of the non-locking mated condition of described correspondence is on the opposite direction of control configuration of corresponding locking mated condition.Like this, when the operation drill chuck, be convenient to grip back cover operation rotary sleeve, use more convenient.
Described round element is provided with towards the key with rotary spacing effect 52 of back cover perk, after be arranged with spacing hole or the groove 63 that cooperates with described key.Key 52 and can limit the rotation of back cover cooperating of spacing hole 63 can only rotate the back cover in locking position and non-locking interdigit, is beneficial to from latching operation and the releasing control from latching operation.If key 52 is the radial direction perks towards drill chuck, it can also play the axial limiting effect to the back cover.
In the present embodiment, described back cover can be installed in the rear end of drill body in the following way: described back cover has bonnet 64, and described bonnet is passed through collar 93 axial location on the step of drill body rear end.The bonnet direction perk that the set key 52 of described round element can overlap backward, described spacing hole 63 or groove are located on the bonnet.
Described central gear 11 can be a direct forming at a circle tooth on drill body surface, and is connected on the drill body in the mode of integral type, and described central gear 11 also can be an independently part and being connected with drill body.
The central shaft 71 of described planetary gear 7 is connected on the nut, and realize being connected of planetary gear 7 and nut with this, as shown in the figure, described nut is provided with the mounting groove 31 of planetary gear and central shaft thereof, described planetary gear and central shaft thereof are installed on this, mounting groove is empty thoroughly with respect to the position of gear, and like this, planetary gear can be connected and can be connected with central gear with the tooth 22 of rotary sleeve inner surface.Described planetary gear also can be installed on the tooth rest, and tooth rest is connected with nut, and realizes being connected of planetary gear 7 and nut with this.Also can be provided with the tooth that cooperates with planetary gear on the described nut, realize being connected with planetary.
Planetary quantity described in the utility model is 3, circumferentially evenly is provided with along drill chuck.
Drawing reference numeral 91 is a bearing, and drawing reference numeral 92 is a packing ring, and they are between the drill body step of nut and rear nut.Drawing reference numeral 94 is the collar at front end qualification rotary sleeve that is connected with drill body.The axial qualification in the rear end of rotary sleeve can be by the cooperate realization of rotary sleeve with nut or back cover.Drawing reference numeral 95 is a nut sleeve.
During clamping tool, turn rotary sleeve, tooth 22 drive planetary gears, move thereby drive nut along circumferential movement on the central gear surface, clamping tool, and can import bigger torsion, make drill chuck have bigger clamping force.
During clamping tool, from the front end of drill chuck, rotary sleeve is to clockwise rotate, and the rotation of drive nut makes the jaw clamping tool; Back cover spacing hole one sidewall and key 52 are close to, and are to rotate counterclockwise trend, and at this moment, self-locking position 53 is in the groove 72 and with groove 21 and is in disengaged condition, and drill chuck is in non-locking state.Behind clamping tool, clockwise rotate the back cover and be close to back cover another sidewall of spacing hole and key 52, self-locking position 53 changes in the groove 61 and falls into groove 21, thereby realizes self-locking locking.When locking state, even drill chuck is subjected to shock loading, because of cooperating of self-locking position 53 and groove 21, drill body is loosening relatively for nut, and jaw keeps the clamped condition to instrument.In the time will taking out instrument, rotate counterclockwise afterwards earlier and overlap, self-locking position 53 and groove 21 are thrown off, just rotatable rotary sleeve unclamps jaw.
Claims (7)
1. self-locking type clamping head of hand-locking drill, comprise drill body, jaw, axial location rotary sleeve, nut, be in the back cover at rotary sleeve rear, jaw is connected with nut thread, it is characterized in that being provided with in the rear end of described rotary sleeve the groove that participates in self-locking, described drill chuck is provided with the round element that can not rotate relative to drill body at the rear portion of drill body, described round element is provided with the spring leaf that participates in self-locking, and described spring leaf is provided with the self-locking position that cooperates with described rotary sleeve rear end inner groovy; Described back cover is circumferentially rotatable, and the front end in the cover of back is provided with control spring sheet and the control configuration of rotary sleeve rear end inner groovy locking mated condition and the control configuration of control spring sheet and the non-locking mated condition of rotary sleeve rear end inner groovy; The forward outer surface of described drill body is connected with motionless central gear, and described drill chuck also is provided with the planetary gears that are connected with nut some and that central gear cooperates between rotary sleeve and drill body, and the inner surface of described rotary sleeve is provided with the tooth that cooperates with planetary gear.
2. a kind of self-locking type clamping head of hand-locking drill as claimed in claim 1 is characterized in that described round element is provided with towards the key with rotary spacing effect of back cover perk, after be arranged with spacing hole or the groove that cooperates with described key.
3. a kind of self-locking type clamping head of hand-locking drill as claimed in claim 2, it is characterized in that described back cover has bonnet, described bonnet is axially located in the drill body rear end, the bonnet direction perk that the set key of described round element overlaps backward, and described spacing hole or groove are located on the bonnet.
4. a kind of self-locking type clamping head of hand-locking drill as claimed in claim 1, the self-locking position that it is characterized in that described spring leaf is a projection outside on the spring leaf, described control is configured as groove.
5. as claim 1,2,3 or 4 described a kind of self-locking type clamping head of hand-locking drill, it is characterized in that the direction of rotation with clamping work pieces is a positive direction, the control configuration of the non-locking mated condition of described correspondence is on the opposite direction of control configuration of corresponding locking mated condition.
6. a kind of self-locking type clamping head of hand-locking drill as claimed in claim 1 is characterized in that described nut is provided with the mounting groove of planetary gear and central shaft thereof, and described planetary gear and central shaft thereof are installed on this, and mounting groove is empty thoroughly with respect to the position of gear.
7. a kind of self-locking type clamping head of hand-locking drill as claimed in claim 1 is characterized in that described planetary quantity is 3, circumferentially evenly is provided with along drill chuck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720176912XU CN201091927Y (en) | 2007-05-30 | 2007-09-21 | Self-locking hand-holding drill chuck |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200720109834.1 | 2007-05-30 | ||
| CN200720109834 | 2007-05-30 | ||
| CNU200720176912XU CN201091927Y (en) | 2007-05-30 | 2007-09-21 | Self-locking hand-holding drill chuck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201091927Y true CN201091927Y (en) | 2008-07-30 |
Family
ID=39899887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720176912XU Expired - Fee Related CN201091927Y (en) | 2007-05-30 | 2007-09-21 | Self-locking hand-holding drill chuck |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN201091927Y (en) |
| WO (1) | WO2008144965A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7722300B1 (en) * | 2006-06-13 | 2010-05-25 | Jerry Alvin Corcoran | Chuck with internal geared tightening mechanism |
| WO2010057397A1 (en) * | 2008-11-24 | 2010-05-27 | 浙江三鸥机械股份有限公司 | A self-lock manual tightening drill chuck |
| WO2014082194A1 (en) * | 2012-11-27 | 2014-06-05 | 浙江三鸥机械股份有限公司 | Self-locking inner cone drill chuck |
| CN107138774A (en) * | 2017-06-23 | 2017-09-08 | 浙江三鸥机械股份有限公司 | A kind of Self-locking drill-chuck |
| CN109351995A (en) * | 2018-11-05 | 2019-02-19 | 台州市益福机械制造有限公司 | Hand-tight drill chuck with locking function |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6729812B2 (en) * | 1999-12-06 | 2004-05-04 | Theodore G. Yaksich | Power driver having geared tool holder |
| US6913429B1 (en) * | 2002-07-31 | 2005-07-05 | Porter-Cable Corporation | Tooless bit retaining assembly |
-
2007
- 2007-06-25 WO PCT/CN2007/001973 patent/WO2008144965A1/en active Application Filing
- 2007-09-21 CN CNU200720176912XU patent/CN201091927Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7722300B1 (en) * | 2006-06-13 | 2010-05-25 | Jerry Alvin Corcoran | Chuck with internal geared tightening mechanism |
| WO2010057397A1 (en) * | 2008-11-24 | 2010-05-27 | 浙江三鸥机械股份有限公司 | A self-lock manual tightening drill chuck |
| WO2014082194A1 (en) * | 2012-11-27 | 2014-06-05 | 浙江三鸥机械股份有限公司 | Self-locking inner cone drill chuck |
| CN107138774A (en) * | 2017-06-23 | 2017-09-08 | 浙江三鸥机械股份有限公司 | A kind of Self-locking drill-chuck |
| CN107138774B (en) * | 2017-06-23 | 2023-11-28 | 浙江三鸥机械股份有限公司 | Self-locking drill chuck |
| CN109351995A (en) * | 2018-11-05 | 2019-02-19 | 台州市益福机械制造有限公司 | Hand-tight drill chuck with locking function |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2008144965A1 (en) | 2008-12-04 |
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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: 20080730 Termination date: 20130921 |