CN2832373Y - Locking drill chuck - Google Patents
Locking drill chuck Download PDFInfo
- Publication number
- CN2832373Y CN2832373Y CNU200520014801XU CN200520014801U CN2832373Y CN 2832373 Y CN2832373 Y CN 2832373Y CN U200520014801X U CNU200520014801X U CN U200520014801XU CN 200520014801 U CN200520014801 U CN 200520014801U CN 2832373 Y CN2832373 Y CN 2832373Y
- Authority
- CN
- China
- Prior art keywords
- nut
- protheca
- spring leaf
- drill chuck
- drill body
- 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
Links
Images
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)
Abstract
The utility model provides a kind of novel lock locking drill chuck.It comprises drill body, jaw, the protheca of the nut that is threaded with jaw, axial limited operating nut, axial and circumferential can not relative drill body motion back cover, it also comprises the element of being with spring leaf, this element and nut are connected and rotate synchronously with nut, spring leaf has the lock end, the front end of back cover is provided with the lock of spring leaf holds that unidirectional tooth lock cooperates and one encloses sawtooth, and the protheca inwall is provided with the configuration that is connected with spring leaf and the configuration of control spring sheet and sawtooth mated condition.The utility model by make nut with can not be relative at axial and circumferential the back cover locking of drill body motion cooperate the self-locking problem that solves drill chuck, structure is more simple, and is also more convenient when mounted.
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 in the hand fastening drill clutch, jaw, nut, the protheca of operating nut, at the axial and circumferential back cover of drill body motion relatively, 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, jaw passes in and out in inclined hole to clamp or the drilling tool that gets loose thereby the operation protheca drives nut rotation drive, the mode of protheca operating nut can be that protheca directly is connected with nut and drives nut, also can be to be connected indirectly with nut, and torsion be passed to nut to drive nut by intermediary element by one or several intermediary element.The shortcoming of this drill chuck 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.
For this reason, the hand fastening drill clutch of band auto-lock function is arranged at present, overcoming above-mentioned defective, but the structure more complicated is installed inconvenience, and is not strong from latching operation and clamp operation continuity, the convenience that influence is operated.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of novel lock locking drill chuck simple in structure.For this reason, the utility model is by the following technical solutions: it comprises drill body, jaw, the protheca of the nut that is threaded with jaw, axial limited operating nut, axial and circumferential can not relative drill body motion back cover, it also comprises the element of being with spring leaf, this element and nut are connected and rotate synchronously with nut, spring leaf has the lock end, the front end of back cover is provided with the lock of spring leaf holds that unidirectional tooth lock cooperates and one encloses sawtooth, and the protheca inwall is provided with the configuration that is connected with spring leaf and the configuration of control spring sheet and sawtooth mated condition.The utility model by make nut with can not be relative at axial and circumferential the back cover locking of drill body motion cooperate the self-locking problem that solves drill chuck, structure is more simple, and is also more convenient when mounted.
In the utility model, the element of band spring leaf can be realized and being connected of nut by the round element, round element and nut interference fit, and the element of described band spring leaf is provided with the installation position, and the installation position is sandwiched between round element and the nut.Like this, the installation of the element of nut and band spring leaf is all simpler, and the torsion transmission is also more reliable.
Description of drawings
Fig. 1 partly cuts open schematic diagram for a kind of embodiment's of the present utility model.
Fig. 2 is the A-A cutaway view of Fig. 1 under non-self-locking state.
Fig. 3 is the B-B cutaway view of Fig. 1 under non-self-locking state.
Fig. 4 is the schematic diagram of blowing of Fig. 1.
Fig. 5 is the cutaway view of protheca front end axial limiting structure among Fig. 1.
Fig. 6 partly cuts open figure for another kind of drill chuck front-end architecture provided by the utility model.
Fig. 7 is the schematic diagram of blowing of drill chuck front-end architecture shown in Figure 6.
The specific embodiment
With reference to accompanying drawing.The utility model comprises drill body 1, jaw 4, the protheca 2 of the nut 3 that is threaded with jaw, axial limited operating nut, axial and circumferential can not relative drill body motion back cover 6, it also comprises the element 70 of being with spring leaf 7, this element and nut are connected and rotate synchronously with nut, spring leaf has lock end 73, the front end of back cover is provided with the lock of spring leaf holds that unidirectional tooth lock cooperates and one encloses sawtooth 61, and the protheca inwall is provided with the configuration that is connected with spring leaf and the configuration of control spring sheet and sawtooth mated condition.
With regard to " the front end one circle sawtooth 61 of back cover ", can adopt multiple structure to realize, both can adopt the front end surface of sawtooth 61 direct forming, and also can adopt sawtooth 61 is formed on the independent round element, the round element of band saw tooth had been embedded in the front end surface of back cover at the back cover.What present embodiment adopted is former structure.
The element 70 of described band spring leaf had both played the effect of transmitting torsion when the protheca operating nut and had also played the effect that cooperates the self-locking of realization drill chuck with sawtooth.Element 70 can be located at the front end face or the rear end face of nut.Present embodiment is realized and being connected of nut by round element 8, round element and nut interference fit, and the element of described band spring leaf is provided with installation position 74, and the installation position is sandwiched between round element and the nut, thereby realizes and being connected of nut.Owing to adopt this mode installation elements 70, because round element and nut interference fit, the utility model nut can be two halves formula structure, the installation of the nut of being more convenient for like this.As described in Fig. 1 and 4, nut is installed on the shaft shoulder 100 at drill body middle part.Be provided with a circle ball 5 between the step at the rear end face of nut and drill body middle part
The configuration of configuration that the protheca inwall is connected with spring leaf and control spring sheet and sawtooth mated condition can be to be molded directly within the protheca inwall, also can be to be connected with the protheca inwall, thereby make the protheca inwall have above-mentioned configuration by a part with respective surfaces configuration.These configurations of present embodiment are molded directly within the protheca inwall.
Spring leaf is provided with outside positioning convex 72, and described protheca inwall is connected with spring leaf is configured as groove 23 that cooperates with positioning convex 72 and the groove 22 that cooperates with positioning convex when non-self-locking state when self-locking state.Spring leaf also is provided with the projection 71 that matches with the configuration of sawtooth circle mated condition with the control spring sheet of protheca.The control spring sheet of protheca is configured as and projection 71 grooves that cooperate 21 and groove 21 protheca inner surface on every side with sawtooth circle mated condition.Like this, the self-locking operational motion is identical with the clamp operation direction of action, becomes the continuity of clamp operation action, more meets use habit, and it is more convenient to operate, and feel is very good.
The protheca inwall is provided with transposition groove 25, and nut is provided with the transposition key 31 that is in the transposition groove.Like this, the clamping force in the time of improving the drill chuck clamping.
The axial limiting of protheca can adopt multiple mode, and is spacing such as adopting with the protecgulum of drill body interference fit at front end, and the rear end is by being connected with it in the drill chuck or the part of adjacency carries out spacing.As shown in Figure 1, the front end axial limiting mode of another kind of protheca is provided, the installation sleeve that be provided with rolling element 103 10 of described axial limiting spare for fixedlying connected with the drill body front end, installation sleeve comprises inwall 101 and outer wall 102, rolling element is located between the inner and outer wall, and the front end of protheca is blocked by axial limiting spare, and the inwall of protheca front end abuts on the outer wall 102, like this, can also play balance and stabilization to protheca.Described rolling element adopts needle roller in the present embodiment.Installation sleeve can adopt inwall 101 to be fixedly connected on the drill body with drill body front end cylindrical interference fit, owing to outer wall 102 can rotate on the surface of needle roller, like this, the frictional force when adopting this position limiting structure to reduce to operate protheca.Certainly, adopt the mode of protheca inwall and installation sleeve outer wall 102 interference fit, also can play the axial limiting effect protheca.
With reference to Fig. 6 and 7.Demonstrated another kind of axial location mode to protheca in this two width of cloth figure again, described axial limiting spare is a ring-type element 13, and ring-type element is provided with corresponding arc groove 131,14 with the drill body front end, is provided with ball 12 in the arc groove.Drawing reference numeral 132 is the hole of installation ball set on the ring-type element.Shown in Fig. 6 and 7, the front inner wall of protheca is provided with inserts 27, inserts 27 and ring-type element 13 interference fit, thereby the axial limiting of realization protheca, frictional force when adopting this position limiting structure also can reduce to operate protheca can also play balance and stabilization to protheca.As shown in the figure, it is provided with two circle balls 12.Certainly, ring-type element also can be that ring-type element only blocks protheca at the front end of protheca with cooperating of protheca, plays the effect of front end axial limiting.
It also is provided with the protective cap 9 of protheca in Fig. 1, and protective cap encases the effect of playing the protection protheca with the front end cylindrical of protheca.In Fig. 1, protective cap 9 and drill body interference fit.
With reference to Fig. 6 and 7.Demonstrated another kind of syndeton to protective cap 9 and drill body in this two width of cloth figure again, described protective cap and drill body front end are rotationally connected.Be provided with the ring-type element 15 of fixedlying connected with protective cap between protective cap and the drill body front end, ring-type element is provided with corresponding arc groove 151,17 with the drill body front end, is provided with ball 16 in the arc groove.
During use, when being in non-self-locking state, the lock end 73 and the sawtooth circle 61 of spring leaf are in disengaged condition, and projection 72 is in the groove 22, when put into drilling tool in jaw after, from the drill chuck lower end, clockwise rotate protheca and since element 70 relatively nut be connected with nut rotationally, torsion passes to nut successively by protheca, element 70, drive nut and rotate simultaneously, jaw is drawn in gradually clamp drilling tool.Be rotated further protheca, at this moment, nut and element 70 temporarily stop operating, after protheca turns over certain angle, and the transposition key 31 of the back wall for leaning of transposition groove 25 and nut, simultaneously, spring leaf is by protheca inwall jack-up, and the lock end enters in the serrated slot, and projection 72 is in the groove 23.Be rotated further protheca, drive nut and element 7 rotations, the lock end of spring leaf slips on the serrated slot surface, the another tooth of a tooth, and clamping force is increasing, until complete clamping tool.At this moment, unless during power cut-off, operation protheca reverse rotation is by the step opposite with the above-mentioned steps drilling tool that gets loose, because the lock end of spring leaf is withstood by sawtooth, under the situation of not handling protheca, nut can't backward rotation, thereby realizes self-locking, even make drill chuck be subjected to shock loading at work, nut can not become flexible yet, and keeps the clamping of drill chuck to drilling tool.
Claims (10)
1, novel lock locking drill chuck, the nut that comprises drill body, jaw, is threaded with jaw, the protheca of axial limited operating nut, axial and circumferential can not relative drill body motion back cover, it is characterized in that it also comprises the element of being with spring leaf, this element and nut are connected and rotate synchronously with nut, spring leaf has the lock end, the front end of back cover is provided with the lock of spring leaf holds that unidirectional tooth lock cooperates and one encloses sawtooth, and the protheca inwall is provided with the configuration that is connected with spring leaf and the configuration of control spring sheet and sawtooth mated condition.
2, novel lock locking drill chuck as claimed in claim 1 is characterized in that it also is provided with round element with the nut interference fit, and the element of described band spring leaf is provided with the installation position, and the installation position is sandwiched between round element and the nut.
3, novel lock locking drill chuck as claimed in claim 1, it is characterized in that spring leaf is provided with outside positioning convex, described protheca inwall is connected with spring leaf is configured as groove that cooperates with positioning convex and the groove that cooperates with positioning convex when non-self-locking state when self-locking state.
4, novel lock locking drill chuck as claimed in claim 1 is characterized in that spring leaf also is provided with the projection that matches with the configuration of sawtooth circle mated condition with the control spring sheet of protheca.
5, novel lock locking drill chuck as claimed in claim 1 is characterized in that the rotary sleeve inwall is provided with the transposition groove, and nut is provided with the transposition key that is in the transposition groove.
6, novel lock locking drill chuck as claimed in claim 1, it is characterized in that it also is provided with the axial limiting spare of protheca, the installation sleeve that be provided with rolling element of described axial limiting spare for fixedlying connected with the drill body front end, installation sleeve comprises inner and outer wall, rolling element is located between the inner and outer wall.
7, novel lock locking drill chuck as claimed in claim 6 is characterized in that described rolling element is needle roller or ball.
8, novel lock locking drill chuck as claimed in claim 1 is characterized in that it also is provided with the axial limiting spare of protheca, and described axial limiting spare is a ring-type element, and ring-type element is provided with corresponding arc groove with the drill body front end, is provided with ball in the arc groove.
9, novel lock locking drill chuck as claimed in claim 1 is characterized in that it also is provided with the protective cap of protheca, and described protective cap and drill body front end are rotationally connected.
10, novel lock locking drill chuck as claimed in claim 9 is characterized in that being provided with the ring-type element of fixedlying connected with protective cap between protective cap and the drill body front end, and ring-type element is provided with corresponding arc groove with the drill body front end, is provided with ball in the arc groove.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200520014801XU CN2832373Y (en) | 2005-09-09 | 2005-09-09 | Locking drill chuck |
| PCT/CN2005/002349 WO2007028287A1 (en) | 2005-09-09 | 2005-12-28 | A self-locking drill chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200520014801XU CN2832373Y (en) | 2005-09-09 | 2005-09-09 | Locking drill chuck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2832373Y true CN2832373Y (en) | 2006-11-01 |
Family
ID=37196689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200520014801XU Expired - Fee Related CN2832373Y (en) | 2005-09-09 | 2005-09-09 | Locking drill chuck |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN2832373Y (en) |
| WO (1) | WO2007028287A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008080271A1 (en) * | 2006-12-30 | 2008-07-10 | Xinping Li | A self-locking type manually tightened 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 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015102241B4 (en) * | 2015-02-17 | 2024-10-02 | Röhm Gmbh | Drill chuck |
| GB2551208B (en) * | 2016-06-09 | 2020-04-22 | Syngenta Participations Ag | Pesticidal formulation |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6102411A (en) * | 1998-08-14 | 2000-08-15 | Power Tool Holders, Inc. | Chuck with locking sleeve |
| JP2000301402A (en) * | 1999-04-20 | 2000-10-31 | Murakkusu:Kk | Tool chuck |
| EP1170079B2 (en) * | 2000-07-03 | 2010-10-06 | Röhm GmbH | 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 |
| CN2602857Y (en) * | 2003-03-25 | 2004-02-11 | 山东威达机械股份有限公司 | Self-locking drill chuck |
| CN2604260Y (en) * | 2003-04-01 | 2004-02-25 | 台州市三鸥钻夹头制造有限公司 | Locking drill chuck |
-
2005
- 2005-09-09 CN CNU200520014801XU patent/CN2832373Y/en not_active Expired - Fee Related
- 2005-12-28 WO PCT/CN2005/002349 patent/WO2007028287A1/en active Application Filing
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008080271A1 (en) * | 2006-12-30 | 2008-07-10 | Xinping Li | A self-locking type manually tightened 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2007028287A1 (en) | 2007-03-15 |
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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: 20061101 |