CN105855582A - Flat-jaw self-tightened drill chunk - Google Patents
Flat-jaw self-tightened drill chunk Download PDFInfo
- Publication number
- CN105855582A CN105855582A CN201610397677.2A CN201610397677A CN105855582A CN 105855582 A CN105855582 A CN 105855582A CN 201610397677 A CN201610397677 A CN 201610397677A CN 105855582 A CN105855582 A CN 105855582A
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- CN
- China
- Prior art keywords
- jaw
- drill chuck
- precursor
- rear body
- flat
- 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.)
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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
Abstract
The invention relates to the machining machinery field and the electric tool field, in particular to a flat-jaw self-tightened drill chunk. The flat-jaw self-tightened drill chunk comprises a back sleeve, a back body, a threaded rod, a front body and multiple clamping jaws; one end of the back body is provided with an inner hole which is a threaded hole; the threaded rod is arranged in the inner hole and is in threaded connection with the inner hole; the end, far away from the back body, of the threaded rod is provided with a clamping jaw positioning portion; the clamping jaw positioning portion is provided with multiple clamping jaw positioning grooves; the other end of the back body is provided with a connecting portion; one end of the back sleeve is fixedly connected with the front body; the front body is provided with clamping jaw slide ways which can enable the clamping jaws to be only capable of sliding in the clamping jaw slide ways; the back sleeve, the back body, the front body, the threaded rod and the clamping jaw positioning portion are coaxially arranged; an inner thread of the inner hole and an outer thread of the threaded rod are both multiple threads. According to the flat-jaw self-tightened drill chunk, it is guaranteed that the drill chunk can be conveniently loosened after being closed in a clamping mode at work, the purpose that the clamping jaws of the drill chunk can be manually opened is achieved, and operation is easy and convenient.
Description
Technical field
The present invention relates to machine instrument field and field of power tools, especially relate to a kind of flat pawl certainly
Locking drill chuck.
Background technology
Drill chuck is the instrument that mechanical processing industry and Power Tools Industries commonly use clamping drilling tool.
Drill chuck is usually and is made up of drill point set, degree of tightness ring, contiguous block, bonnet.In drill point overlaps,
It axially utilizes contiguous block to realize in location, by circumference to stirring jack, makes at degree of tightness ring
Move axially under the effect of female thread, accurately self-centering clamp drilling tool, need during work to use
During equipped with the drill chuck of different drilling tools (such as centre drill, drill bit, reamer, screw tap etc.), can unclamp
Location screw, after rotation segment to desired location, fastening location screw, it is achieved drill chuck multistation
Movement.
Drill chuck currently on the market, is divided three classes from big to small according to chucking power: hand fastening drill clutch,
Spanner drill chuck and keyless drill chuck.Three kinds of drill chucks are respectively arranged with pluses and minuses.Wherein, hand fastening drill clutch becomes
This is low, easy to operate, lightweight, is widely used, but its chucking power is little, and precision is relatively low；Spanner
The cost of drill chuck is relatively low, is widely used, but its operation is more inconvenient；Keyless drill chuck clamps
Power is big, and precision is higher, but it is relatively costly, and weight is relatively big, and inconvenient operation.
Along with the development in epoch, it is made to apply owing to the precision of keyless drill chuck is higher more and more,
The keyless drill chuck of existing existing market mainly has four kinds of structures, the most flat pawl keyless drill chuck,
Gear keyless drill chuck and female thread and external screw thread keyless drill chuck.Wherein only has flat pawl keyless drill chuck
Apply more, the most only see document for other three kinds, lose or seldom see product.
The drill chuck of these four structure is all to transfer power on jaw by one start screw, it is achieved folder
Pawl in precursor jaw hole before and after move, and then realize clamping or unclamp drilling tool.
But it does not the most break away from aforesaid shortcoming, and because clamping force is big, usually makes transmission power
Between screw thread, form excessive extruding force and frictional force even asphyxia by external pressure on the chest and abdomen, it is necessary to by specific purpose tool ability
Unclamp self-tightening and unclamp the drawback of drill chuck, operate very inconvenient, and specific purpose tool is easily lost, should
Drill chuck is scrapped because not opening, and causes waste.
How by the existing suitable clamping meeting job requirement of the keyless drill chuck of screw thread transmission power
Power, can realize again simple to operate, the manual keyless drill chuck that just can conveniently unclamp of use, be the most urgently
The technical barrier solved.
Summary of the invention
It is an object of the invention to provide flat pawl keyless drill chuck, to solve skill present in prior art
Art problem.
The flat pawl keyless drill chuck that the present invention provides, including rear enclosure, rear body, screw rod, precursor and multiple
Jaw；
One end of described rear body is provided with endoporus, and described endoporus is screwed hole；
Described screw rod is arranged in described endoporus, and is connected with described inner hole thread；
Described screw rod is provided with jaw location division away from one end of described rear body；
Multiple jaw locating slot it is provided with, it is possible to make the described jaw can only be in institute on described jaw location division
State and slide on jaw location division；
The other end of described rear body is provided with the connecting portion for being connected with external equipment；
One end of described rear enclosure is fixing with described precursor to be connected, for being fixed in the rear by described rear body
Set in, it is possible to make rear body can only in rear enclosure radial rotating, without axially moving；
Jaw slideway it is provided with, it is possible to make the described jaw can only be in described jaw slideway on described precursor
Slide；
Described rear enclosure, described rear body, described precursor, described screw rod and described jaw location division coaxially set
Put；
The female thread of described endoporus and the external screw thread of described screw rod are multiple thread.
Further, described jaw is triangle platy structure；
Three limits of described jaw are respectively arranged with the location that can coordinate with described jaw locating slot and slide
Portion, can with described jaw slideway coordinate slideway sliding part and can be with adjacent described jaws contact
Two clamping faces；
Described clamping face is parallel with the axis of described precursor；
The angle of two described clamping faces is 120 °.
Further, described multiple-threaded lead angle α is 2.4 °≤α≤13.5 °.
Further, described precursor is arranged in protheca, is used for preventing described jaw sliding at described jaw
Skid off in road；
One end of described protheca is fixing with described rear enclosure to be connected.
Further, described protheca is threadeded with described rear enclosure.
Further, described jaw slideway is provided with jaw dismounting hole near one end of described rear body.
Further, described rear body is provided with ball or bearing away from one end of described precursor, it is possible to
Described rear enclosure carries out Structure deformation.
Further, described rear enclosure is provided with bonnet away from one end of described precursor；
Described bonnet and described rear body are connected away from one end of described precursor is fixing, be used for driving described after
Body rotates in described precursor and described rear enclosure, it is possible to before drill chuck works and after work, just
Begin clamp and unclamp drilling tool.
Further, it is threaded connection between described precursor and described rear enclosure.
Further, described connecting portion is to have female straight hole or the taper hole of the conical surface.
The flat pawl keyless drill chuck that the present invention provides, is driven and rear body spiral shell by the rotation of body after driving
Stricture of vagina connect screw rod, screw rod is limited by jaw, can only before and after move axially, will not radial rotating,
Further during screw rod moves, drive the movement of jaw, it is achieved that the Guan Bi of jaw and unclamping,
And multiple thread will be used between rear body and screw rod to be attached, it is ensured that press from both sides at work at drill chuck
After closing conjunction, it is possible to unclamp very easily, it is achieved manually can open the mesh of the jaw of drill chuck
, simple to operation.
Accompanying drawing explanation
In order to be illustrated more clearly that the specific embodiment of the invention or technical scheme of the prior art, under
The accompanying drawing used required in detailed description of the invention or description of the prior art will be briefly described by face,
It should be evident that the accompanying drawing in describing below is some embodiments of the present invention, general for this area
From the point of view of logical technical staff, on the premise of not paying creative work, it is also possible to obtain according to these accompanying drawings
Obtain other accompanying drawing.
The explosive view of the flat pawl keyless drill chuck that Fig. 1 provides for the present invention；
The front view of the flat pawl keyless drill chuck that Fig. 2 provides for the present invention；
Fig. 3 is the A-A sectional view of the flat pawl keyless drill chuck shown in Fig. 2；
The front view of the protheca of the flat pawl keyless drill chuck that Fig. 4 provides for the present invention；
Fig. 5 is the B-B sectional view of the flat pawl keyless drill chuck shown in Fig. 4；
The axonometric chart of the flat pawl keyless drill chuck that Fig. 6 provides for the present invention；
The different number of starts of the flat pawl keyless drill chuck that Fig. 7 provides for the present invention and different spiral liter
Torque curve figure under angle.
Reference:
1: bonnet 2: lock ring 3: rear enclosure
4: jaw 4-1: location sliding part 4-2: slideway sliding part
4-3: clamping face 5: bolt 6: rear body
6-1: connecting portion 6-2: endoporus 7: screw rod
8: jaw location division 8-1: jaw locating slot 9: precursor
9-1: jaw dismounting hole 9-2: jaw slideway 10: protheca
11: ball
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme is clearly and completely described, it is clear that
Described embodiment is a part of embodiment of the present invention rather than whole embodiments.Based on this
Embodiment in bright, those of ordinary skill in the art are obtained under not making creative work premise
Every other embodiment, broadly fall into the scope of protection of the invention.
In describing the invention, it should be noted that term " " center ", " on ", D score, " left ",
The orientation of the instruction such as " right ", " vertically ", " level ", " interior ", " outward " or position relationship are for based on accompanying drawing institute
The orientation shown or position relationship, be for only for ease of the description present invention and simplify description rather than instruction
Hint indication device or element must have specific orientation, with specific azimuth configuration and operation,
Therefore it is not considered as limiting the invention.
Additionally, term " first ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that refer to
Show or imply relative importance.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, art
Language " is installed ", " being connected ", " connection " should be interpreted broadly, and connects for example, it may be fixing, it is also possible to
It is to removably connect, or is integrally connected；Can be to be mechanically connected, it is also possible to be electrical connection；Permissible
It is to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be the connection of two element internals.
For the ordinary skill in the art, above-mentioned term can be understood in the present invention with concrete condition
Concrete meaning.
As shown in figures 1-6, the invention provides a kind of flat pawl keyless drill chuck, including rear enclosure 3, after
Body 6, screw rod 7, precursor 9 and multiple jaw 4；
It is screwed hole that one end of described rear body 6 is provided with endoporus 6-2, described endoporus 6-2；
Described screw rod 7 is arranged in described endoporus 6-2, and threadeds with described endoporus 6-2；
Described screw rod 7 is provided with jaw 4 location division away from one end of described rear body 6；
Multiple jaw locating slot 8-1 it is provided with, it is possible to make described jaw 4 on described jaw 4 location division
Can slide on described jaw 4 location division；
The other end of described rear body 6 is provided with the connecting portion 6-1 for being connected with external equipment；
One end of described rear enclosure 3 is fixing with described precursor 9 to be connected, for being fixed on by described rear body 6
In described rear enclosure, it is possible to make rear body can only in rear enclosure radial rotating, it is impossible to move in the axial direction；
Jaw slideway 9-2 it is provided with, it is possible to make the described jaw 4 can only be at described jaw on described precursor 9
Slide in slideway 9-2；
Described rear enclosure 3, described rear body 6, described precursor 9, described screw rod 7 and described jaw 4 position
Portion is coaxially disposed；
The female thread of described endoporus 6-2 and the external screw thread of described screw rod 7 are multiple thread.
The present invention be applicable to all by power directly or indirectly through screw thread, directly or indirectly be delivered to folder
On pawl 4, drive the keyless drill chuck that claw is movable.
One start screw is conducive to self-locking, is unfavorable for unclamping.Multiple thread is conducive to the transmission of power, both
For facilitate gripping by, be more beneficial for unclamping.And because the contact area increased between screw thread, make and single head
The same clamping force of screw thread is dispersed in bigger contact area, makes the contact pressure of screw thread unit afterwards
Or frictional force is little compared with one start screw a lot, the most easily open drill chuck.Therefore, exist
In the present invention, employ multiple thread as the motion thread between rear body 6 and screw rod 7.
One end of rear body 6 is arranged in the metapore of precursor 9, and one end of screw rod 7 is also disposed at precursor 9
Metapore in, the other end of screw rod 7 is arranged in the endoporus 6-2 of rear body 6, with endoporus 6-2 screw thread even
Connect.
Owing to rear body 6 is arranged in the metapore of precursor 9, and rear body 6 is rotationally connected with precursor 9, for
The body 6 stability in precursor 9 after guarantee, it is to avoid it is scurried out during rotating in metapore,
At rear body 6, rear enclosure 3 is set away from one end of precursor 9, and rear enclosure 3 and precursor 9 company of being threadably secured
Connect, and then rear body 6 is fixed in the metapore of the front endoporus of rear enclosure, precursor, make rear body 6 to enter
Row radial rotating and can not move axially, it is ensured that stability during rear body 6 operation.
In use, by body 6 after rotating, after drive, the endoporus 6-2 of body 6 rotates, and is further driven to
The screw rod 7 being connected by multiple thread with endoporus 6-2 is moved up and down, and then further by screw rod 7
Jaw 4 is driven to move up and down in the jaw slideway 9-2 of precursor 9, to complete the Guan Bi of jaw 4 or to open
Open.
Flat pawl keyless drill chuck is bored by applicant in the impact of 1050W, with rushing of a diameter of 12mm
Hit drill bit, respectively with same lead angle 2.4 °, 4.7 °, 13.5 °, on the jaw 4 of same diameter,
Use single head and multiple thread, cement plate has been the punching contrast experiment of a WANLIANG more than thousand time,
Go out the data of lower list.
Contrast in following chart and data coordinates figure, it is possible to find out that multiple thread is when drill chuck is opened
Advantage.
Table one
| Number of starts | Plant capacity | The diameter of drill hammer | Lead angle | Unclamp moment of torsion (meansigma methods) |
| Single head | 1050W | Φ12mm | 2.4° | 11.2N.m |
| Two | 1050W | Φ12mm | 2.4° | 8.5N.m |
| Three | 1050W | Φ12mm | 2.4° | 6.4N.m |
Table two
| Number of starts | Plant capacity | The diameter of drill hammer | Lead angle | Unclamp moment of torsion (meansigma methods) |
| Single head | 1050W | Φ12mm | 4.7° | 9.5N.m |
| Two | 1050W | Φ12mm | 4.7° | 5.2N.m |
| Three | 1050W | Φ12mm | 4.7° | 3.7N.m |
Table three
| Number of starts | Plant capacity | The diameter of drill hammer | Lead angle | Unclamp moment of torsion (meansigma methods) |
| Single head | 1050W | Φ12mm | 13° | 9.2N.m |
| Two | 1050W | Φ12mm | 13° | 5.0N.m |
| Three | 1050W | Φ12mm | 13° | 3.5N.m |
It can be seen that lead angle is the biggest from table one above, table two, table three and accompanying drawing 7,
The head number of screw thread is the most, unclamps moment of torsion required during jaw 4 the least, say, that unclamp jaw 4
Time the most laborsaving.And conventional wisdom is that in industry: the moment of torsion of the hands of common operator is 6N.m.So
Drill chuck unclamps moment more than 6N.m's, and common operator hands is Song Bukai, can only be by special
Instrument just can unclamp.And less than 6N.m unclamp moment, operator just can easily open with hands.
It is preferred embodiment that described jaw 4 is triangle platy structure；
Three limits of described jaw 4 are respectively arranged with the location that can coordinate with described jaw locating slot 8-1
Sliding part 4-1, can with described jaw slideway 9-2 coordinate slideway sliding part 4-2 and can be with adjacent
Described jaw 4 contact two clamping face 4-3；
Described clamping face 4-3 is parallel with the axis of described precursor 9；
The angle of two described clamping face 4-3 is 120 °.
In the present embodiment, jaw 4 is set to the platy structure of triangle, a triangle wherein limit
On be provided with the location sliding part 4-1 coordinated with jaw locating slot 8-1.In the present embodiment, location is sliding
Dynamic portion 4-1 is T-type structure, and jaw locating slot 8-1 is T-slot, and then under both cooperations,
Can make jaw 4 under the effect of jaw locating slot 8-1, carry out closer or far from screw rod 7 axis direction
Movement.
It is pointed out that location sliding part 4-1 is T-shaped in the present embodiment, jaw locating slot 8-1
For T-slot, but it is not limited solely to this kind of fit structure, and it can also is that and will position sliding part
4-1 is set to trapezoidal, is set to and the trapezoidal dovetail groove coordinated by jaw locating slot 8-1, say, that
As long as jaw 4 can be made at screw rod 7 by positioning coordinating of sliding part 4-1 and jaw locating slot 8-1
Jaw 4 location division on can only do the movement closer or far from screw rod 7 axis direction.
In the present embodiment, another limit of jaw 4 is provided with the slideway coordinated with jaw slideway 9-2
Sliding part 4-2.In the present embodiment, slip sliding part is T-type structure, and jaw slideway 9-2 is T
Type groove, and then under both cooperations, it is possible to make jaw 4 under the effect of jaw slideway 9-2, carry out
Movement closer or far from rear body 6 direction.
In the present embodiment, jaw 4 is provided with clamping face 4-3 on the limit of precursor 9 axis.At this
In embodiment, jaw 4 is set to 3, three jaw 4 totally six clamping face 4-3, and then by folder
Hold the cooperation of face 4-3, it is possible to achieve clamped completely by object.
It is pointed out that in the present embodiment, the quantity of jaw 4 is 3, therefore on jaw 4
The angle of two clamping face 4-3 be 120 °, but the quantity of jaw 4 is not limited solely to 3, its
Can also is that 4,5 etc., it is only necessary to the angle of clamping face 4-3 is revised as 90 °, 72 ° accordingly
Deng, it is possible to fit the most completely in the one end making all of jaw 4 have clamping face 4-3.
It is preferred embodiment that described multiple-threaded lead angle α is 2.4 °≤α≤13.5 °.
By repeated multiple times experiment, when lead angle α is less than 2.4 °, clamping force will be excessive, i.e.
Multiple thread is made to strike with the hand open；And lead angle α more than 13.5 ° time, clamping force the most significantly contracts
Little, even the most not clamping drilling tool of one start screw (drill bit).
Therefore the present invention is both can guarantee that clamping drilling tool meets industrial requirement, can realize again using hands
Just can operate requirement easily, it was concluded that having to comply with two conditions, i.e. lead angle α is
2.4°≤α≤13.5°。
It is preferred embodiment that described precursor 9 is arranged in protheca 10, is used for preventing described jaw
4 skid off in described jaw slideway 9-2；
One end of described protheca 10 is fixing with described rear enclosure 3 to be connected.
Owing to jaw slideway 9-2 can only make jaw 4 move up along the side closer or far from rear body 6,
But it cannot ensure that jaw 4 does not comes off on precursor 9.
At precursor 9 peripheral hardware protheca 10, by protheca 10 by fully wrapped around for precursor 9, and then ensure to arrange
Jaw 4 on precursor 9 can not come off from jaw slideway 9-2, it is ensured that normally entering of clamping operation
OK.
It is preferred embodiment that described protheca 10 is threadeded with described rear enclosure 3, described precursor 9
And it is threaded connection between described rear enclosure 3.
In the present embodiment, protheca 10 is fixing with rear enclosure 3 to be connected, and its connected mode is threaded,
I.e. it is respectively arranged with female thread and external screw thread, female thread and precursor 9 near one end of precursor 9 in rear enclosure 3
Connecting, external screw thread is connected with protheca 10.
It is preferred embodiment that described jaw slideway 9-2 is provided with folder near one end of described rear body 6
Pawl dismounting hole 9-1.
At jaw slideway 9-2, jaw dismounting hole 9-1 is set near one end of rear body 6, needs at jaw 4
Safeguard or change and make, open jaw 4, make jaw 4 move in body 6 direction backward, and then make location slide
Aliging with jaw dismounting hole 9-1 in the upper end of portion 4-1, and then can be by jaw 4 from jaw slideway 9-2
Take out.
It is preferred embodiment that described rear body 6, away from the end face of one end of described precursor 9, is arranged
There are ball 11 or bearing, it is possible to carry out Structure deformation with the end face of described rear enclosure 3.
If rear body 6 directly contacts with the end face of rear enclosure 3, when drill chuck works, because of
The counteracting force of jaw 4 makes between rear body 6 and the end face of rear enclosure 3 because of huge frictional force and extruding
Power, and affect the transmission of power, and then both it had been unfavorable for the clamping of drill chuck, also it is unfavorable for drill chuck
Unclamp, the most only do not open with the strength of hands pine especially.
For solving the problems referred to above, in the present embodiment, the connecing of plane of end face and the rear enclosure 3 of rear body 6
Tactile mode is set to Structure deformation, is i.e. provided with ball 11 or bearing between rear body 6 and rear enclosure 3, this
Sample not only improves the good communication of power and clamps, and is more beneficial for just to unclamp with hands or clamping drill point
The requirement of the simple operations of head.
It is preferred embodiment that described rear enclosure 3 is provided with bonnet 1 away from one end of described precursor；
Described bonnet 1 and described rear body 6 are connected away from one end of described precursor 9 is fixing, are used for driving
Described rear body 6 rotates in described precursor 9, it is possible to before drill chuck works and after work, just
Begin clamp and unclamp drilling tool.
In the present embodiment, rear enclosure 3 arranges bonnet 1, bonnet 1 and rear body 6 away from one end of precursor 9
Tight fit, and then can be readily accessible, can also prevent rear enclosure 3 from departing from from rear body simultaneously, it is ensured that
The stability of whole flat pawl drill chuck.
In the present embodiment, bonnet 1 is provided with fastening bolt 5, it is possible to locked with rear body 6 by bonnet 1
Fixed, to ensure will not relatively rotate between bonnet 1 and rear body 6.
It is preferred embodiment that described connecting portion 6-1 is for having female screwed hole or conical surface cone
Hole.
In the present embodiment, rear body 6 is attached with equipment by screwed hole or conical surface taper hole.But
In it is pointed out that rear body 6 is the most a lot of with the connected mode of equipment, as can also is that, bearing pin is even
Connect, hinged etc., say, that as long as rear body 6 can be linked together by it with equipment.
The flat pawl keyless drill chuck that the present invention provides, is driven and rear body 6 by the rotation of body 6 after driving
Threaded screw rod 7, screw rod 7 is limited by jaw 4, can only front and back move axially, will not be radially
Rotate, further during screw rod 7 moves, drive the movement of jaw 4, it is achieved that jaw 4
Guan Bi and unclamp, and will between rear body 6 and screw rod 7 use multiple thread be attached, it is ensured that
After drill chuck at work clamped closed, it is possible to unclamp very easily, it is achieved manually can beat
Spud in the purpose of jaw 4 of chuck, simple to operation.
Last it is noted that various embodiments above is only in order to illustrate technical scheme, rather than
It is limited；Although the present invention being described in detail with reference to foregoing embodiments, this area
Those of ordinary skill is it is understood that the technical scheme described in foregoing embodiments still can be entered by it
Row amendment, or the most some or all of technical characteristic is carried out equivalent；And these amendment or
Person replaces, and does not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a flat pawl keyless drill chuck, it is characterised in that include rear enclosure, rear body, screw rod, precursor
With multiple jaws；
One end of described rear body is provided with endoporus, and described endoporus is screwed hole；
Described screw rod is arranged in described endoporus, and is connected with described inner hole thread；
Described screw rod is provided with jaw location division away from one end of described rear body；
Multiple jaw locating slot it is provided with, it is possible to make the described jaw can only be in institute on described jaw location division
State and slide on jaw location division；
The other end of described rear body is provided with the connecting portion for being connected with external equipment；
One end of described rear enclosure is fixing with described precursor to be connected, for being fixed in the rear by described rear body
Set in, it is possible to make rear body can only in rear enclosure radial rotating, without axially moving；
Jaw slideway it is provided with, it is possible to make the described jaw can only be in described jaw slideway on described precursor
Slide；
Described rear enclosure, described rear body, described precursor, described screw rod and described jaw location division coaxially set
Put；
The female thread of described endoporus and the external screw thread of described screw rod are multiple thread.
Flat pawl keyless drill chuck the most according to claim 1, it is characterised in that described jaw is
Triangle platy structure；
Three limits of described jaw are respectively arranged with the location that can coordinate with described jaw locating slot and slide
Portion, can with described jaw slideway coordinate slideway sliding part and can be with adjacent described jaws contact
Two clamping faces；
Described clamping face is parallel with the axis of described precursor；
The angle of two described clamping faces is 120 °.
Flat pawl keyless drill chuck the most according to claim 1, it is characterised in that described bull spiral shell
Lead angle α of stricture of vagina is 2.4 °≤α≤13.5 °.
Flat pawl keyless drill chuck the most according to claim 1, it is characterised in that described precursor sets
Put in protheca, be used for preventing described jaw from skidding off in described jaw slideway；
One end of described protheca is fixing with described rear enclosure to be connected.
Flat pawl keyless drill chuck the most according to claim 4, it is characterised in that described protheca with
Described rear enclosure is threaded.
Flat pawl keyless drill chuck the most according to claim 1, it is characterised in that described jaw is sliding
Road is provided with jaw dismounting hole near one end of described rear body.
Flat pawl keyless drill chuck the most according to claim 1, it is characterised in that described rear body is remote
One end of described precursor is provided with ball or bearing, it is possible to carry out Structure deformation with described rear enclosure.
Flat pawl keyless drill chuck the most according to claim 1, it is characterised in that described rear enclosure is remote
One end of described precursor is provided with bonnet；
Described bonnet and described rear body are connected away from one end of described precursor is fixing, be used for driving described after
Body rotates in described precursor and described rear enclosure, it is possible to before drill chuck works and after work, just
Begin clamp and unclamp drilling tool.
Flat pawl keyless drill chuck the most according to claim 1, it is characterised in that described precursor with
It is threaded connection between described rear enclosure.
10. according to the flat pawl keyless drill chuck described in any one of claim 1-9, it is characterised in that institute
Stating connecting portion is to have female straight hole or the taper hole of the conical surface.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610397677.2A CN105855582A (en) | 2016-06-03 | 2016-06-03 | Flat-jaw self-tightened drill chunk |
| PCT/CN2016/111129 WO2017206491A1 (en) | 2016-06-03 | 2016-12-20 | Flat jaw self-tightening drill chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610397677.2A CN105855582A (en) | 2016-06-03 | 2016-06-03 | Flat-jaw self-tightened drill chunk |
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| Publication Number | Publication Date |
|---|---|
| CN105855582A true CN105855582A (en) | 2016-08-17 |
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ID=56677175
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610397677.2A Pending CN105855582A (en) | 2016-06-03 | 2016-06-03 | Flat-jaw self-tightened drill chunk |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106984970A (en) * | 2016-12-20 | 2017-07-28 | 朱湘冀 | A kind of mechanical concentric parts with modular construction |
| WO2017206491A1 (en) * | 2016-06-03 | 2017-12-07 | 柳尧亭 | Flat jaw self-tightening drill chuck |
| WO2018103177A1 (en) * | 2016-12-08 | 2018-06-14 | 柳尧亭 | Gear self-tightening drill chuck and flat jaw self-tightening drill chuck |
| KR20220086022A (en) * | 2020-12-16 | 2022-06-23 | (주)전진티티에스 | Keyless drill chuck |
| WO2024036484A1 (en) * | 2022-08-16 | 2024-02-22 | 福比特精工科技有限公司 | Drill chuck and power tool |
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| WO2014019148A1 (en) * | 2012-07-31 | 2014-02-06 | 威海达旺五金制品有限责任公司 | Novel drill chuck |
| CN205660179U (en) * | 2016-06-03 | 2016-10-26 | 柳尧亭 | Flat claw self -tightening drill chuck |
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| CN2334533Y (en) * | 1998-04-07 | 1999-08-25 | 游友容 | Self-locking type drill chuck |
| CN2843690Y (en) * | 2005-11-23 | 2006-12-06 | 浙江三鸥机械股份有限公司 | Tightened drill cartridge by hand |
| CN200963691Y (en) * | 2006-11-07 | 2007-10-24 | 浙江三鸥机械股份有限公司 | Self-locking drill chuck |
| CN201091928Y (en) * | 2007-05-30 | 2008-07-30 | 浙江三鸥机械股份有限公司 | Novel self-tightening drill chuck |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017206491A1 (en) * | 2016-06-03 | 2017-12-07 | 柳尧亭 | Flat jaw self-tightening drill chuck |
| WO2018103177A1 (en) * | 2016-12-08 | 2018-06-14 | 柳尧亭 | Gear self-tightening drill chuck and flat jaw self-tightening drill chuck |
| CN106984970A (en) * | 2016-12-20 | 2017-07-28 | 朱湘冀 | A kind of mechanical concentric parts with modular construction |
| CN106984970B (en) * | 2016-12-20 | 2019-05-10 | 朱湘冀 | A kind of mechanical concentric parts with modular construction |
| KR20220086022A (en) * | 2020-12-16 | 2022-06-23 | (주)전진티티에스 | Keyless drill chuck |
| KR102485576B1 (en) * | 2020-12-16 | 2023-01-06 | (주)전진티티에스 | Keyless drill chuck |
| WO2024036484A1 (en) * | 2022-08-16 | 2024-02-22 | 福比特精工科技有限公司 | Drill chuck and power tool |
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Application publication date: 20160817 |