CN2902532Y - Drill clamping head having anti-loosing and back ward braking function - Google Patents
Drill clamping head having anti-loosing and back ward braking function Download PDFInfo
- Publication number
- CN2902532Y CN2902532Y CN 200620012256 CN200620012256U CN2902532Y CN 2902532 Y CN2902532 Y CN 2902532Y CN 200620012256 CN200620012256 CN 200620012256 CN 200620012256 U CN200620012256 U CN 200620012256U CN 2902532 Y CN2902532 Y CN 2902532Y
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- locking
- braking
- ratchet
- drive sleeve
- sleeve
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Abstract
The utility model discloses a drill chuck with function of anti-release and backward brake comprising a drill body, a plurality of gripping jaws, a nut, an external sleeve, a back sleeve, a driving sleeve which is sleeved on the nut and drives the nut to rotate, an actuating sleeve which is fixed on the external sleeve, drives the driving sleeve and is provided with a controlling portion, a brake locking disk which is capable of being connected slidably with the actuating sleeve and provided with ratchets and an actuating groove which contains the controlling portion, and a brake disk which is provided on the drill body, rotates synchronously with the drill body and is provided with clicks which match the ratchets, wherein an elastic blank is arranged between the brake disk and the actuating locking disk, the clicks and the ratchets are released from engage when the controlling portion is in the actuating groove while the clicks and the ratchets are engaged when the controlling portion is out of the actuating groove and the actuating locking disk is lifted. The utility model has the advantages that the design of the actuating disk and the actuating locking disk realizes the function of anti-release and backward brake. The utility model is applicable to the shock situation.
Description
Technical field
The utility model relates to a kind of throw clamping device, and especially a kind of have locking and drill chuck reverse direction brake function.
Background technology
Traditional throw clamping device is used for clamping various throws, for example drill bit, reamer, screw tap etc.These throws claim chuck again.Typical chuck, for example drill chuck comprises drill body, a plurality of (for example, three) jaw, nut, overcoat etc., drill body, its rear end is connected to the driving shaft of power source, and has the inclined hole of the circumferential five equilibrium in a plurality of edges; A plurality of jaws be installed in respectively in a plurality of corresponding inclined hole in the described drill body, and its outer surface have screw thread; Nut is sleeved on the described drill body, and its inner surface has screw thread, thus with described jaw on engage threads; Overcoat is set on the nut (also being arranged with nut sleeve in some cases on the nut), puts outward to have key, has on the nut and the corresponding keyway of key, so that overcoat can be connected with nut sleeve (nut) by key.Some chuck comprises that also the bearing assembly that is used to reduce to rub overlaps with the back.
In use, manual rotary sleeve, overcoat and then drive nut cover and/or nut, nut drives jaw and moves forward and backward in the inclined hole of drill body then, thereby three jaws is opened or closed, unclamps or clamping tool realizing.
Because drill chuck is generally operational under the operating mode of vibratory impulse, because inertia, nut is loosening easily, makes jaw back off tool handle.Therefore in operation, need the repeated multiple times clamp nut, cause obstacle to production.
In addition, drill chuck is installed on the coupling spindle of electric hand drill, and the operator usually grips electric drill on the other hand, grips the drill chuck overcoat on the other hand, starts electric drill and high speed reverse rotation jaw is retreated fast to final position.When carrying out above operation, the lower surface that the jaw middle part usually can appear in jaw under quick setback state screw thread stops half section and nut chokes, and produces that excessive frictional force is blocked and phenomenon that can't manual unlocking.
In view of the defective that above prior art exists, how to make three jaws of drill chuck keep firmly clamping drilling tool and make it can under the vibratory impulse operating mode, not get loose, and how to make jaw retreat braking to become urgent problem in the industry.
The utility model content
The purpose of this utility model is to provide a kind of and has locking and drill chuck reverse direction brake function, make under the state of the quick setback of jaw when starting electric drill and high speed reverse rotation, can avoid the screw thread termination half section at jaw middle part and the lower surface of nut to choke, realize reverse direction brake function, excessive frictional force is blocked and can't manual unlocking thereby avoid producing.
Another purpose of the present utility model is to provide a kind of and has locking and drill chuck reverse direction brake function, when jaw clamps drilling tool, can also lock lockingly, make a plurality of jaws of drill chuck keep in the course of the work clamping drilling tool securely, avoid getting loose under the vibratory impulse operating mode.
To achieve these goals,, provide a kind of and had locking and drill chuck reverse direction brake function, having comprised according to an aspect of the present utility model: drill body, a plurality of jaws, nut, overcoat, the back cover, and drive sleeve is set on the nut and drive nut rotates; Actuating sleeve is fixed in overcoat and drives drive sleeve; The braking and locking dish can be connected on the drive sleeve axially slidably, which is provided with ratchet; Brake disc is installed on the described drill body and with described drill body and rotates synchronously, which is provided with the ratchet that matches with described ratchet, is provided with partition adjustable between wherein said brake disc and the described braking and locking dish; Wherein, ratchet and ratchet are meshed when the jaw jack-up that the braking and locking dish is retreated.
Preferably, above-mentioned drive sleeve is provided with horizontal key, and the braking and locking dish is provided with axially extended keyway, and the braking and locking dish can be connected on the drive sleeve axially slidably by keyway and cooperating of horizontal key.
Preferably, be provided with the spring that is used for partition adjustable between above-mentioned brake disc and the braking and locking dish.
Preferably, above-mentioned brake disc is provided with a plurality of elastic claws that extend towards braking and locking dish direction.
To achieve these goals,, provide a kind of and had locking and drill chuck reverse direction brake function, having comprised: drill body according to another aspect of the present utility model, a plurality of jaws, nut, overcoat, back cover, and drive sleeve is set on the described nut and drives described nut and rotates; Actuating sleeve is fixed in described overcoat and drives described drive sleeve, which is provided with control part; The braking and locking dish can be connected on the described drive sleeve driver slot which is provided with ratchet and hold described control part axially slidably; Brake disc is installed on the described drill body and with described drill body and rotates synchronously, which is provided with the ratchet that matches with described ratchet, is provided with partition adjustable between wherein said brake disc and the described braking and locking dish; Wherein, described ratchet and ratchet are thrown off engagement when described control part is arranged in described driver slot; Described control part holds up described braking and locking dish, described ratchet and ratchet engagement when leaving described driver slot.
Preferably, above-mentioned control part has the edge of surface blending.
Preferably, above-mentioned drive sleeve is provided with horizontal key, and the braking and locking dish is provided with axially extended keyway, and the braking and locking dish can be connected on the drive sleeve axially slidably by keyway and cooperating of horizontal key.
Preferably, be provided with the spring that is used for partition adjustable between above-mentioned brake disc and the braking and locking dish.
Preferably, above-mentioned brake disc is provided with a plurality of elastic claws that extend towards braking and locking dish direction.
Preferably, above-mentioned drive sleeve is provided with forward and backward drive hole, and actuating sleeve is provided with the forward and backward projection that drives forward and backward drive hole respectively.
The utlity model has following advantage, had locking functions and reverse direction brake function simultaneously by being provided with of brake disc and braking and locking dish.Because be respectively equipped with ratchet and ratchet on brake disc and the braking and locking dish, when jaw retreated into extreme position, ratchet was in the same place with ratchet engagement, can prevent effectively that jaw from excessively retreating; Under the locking duty, ratchet is in the same place with ratchet engagement, thereby can effectively prevent jaw back off tool handle.
Description of drawings
Below specific embodiment of the utility model is elaborated.The embodiment that is not limited to provide but the utility model can have multiple different embodiment.This description taken in conjunction accompanying drawing carries out, and same parts is represented with same label in the accompanying drawings.In the accompanying drawing:
Fig. 1 is the cutaway view according to the drill chuck that the utlity model has locking and reverse direction brake function;
Fig. 2 shows the half sectional view of brake disc;
Fig. 3 is the vertical view of brake disc shown in Figure 2;
Fig. 4 shows the half sectional view of another kind of brake disc;
Fig. 5 is the vertical view of brake disc shown in Figure 4;
Fig. 6 shows the half sectional view of braking and locking dish;
Fig. 7 is the vertical view of braking and locking dish shown in Figure 6;
Fig. 8 shows the front view of drive sleeve;
Fig. 9 is the vertical view of drive sleeve shown in Figure 8;
Figure 10 shows the front view of actuating sleeve;
Figure 11 is the vertical view of actuating sleeve shown in Figure 10;
Figure 12 is the broken section enlarged drawing along H-H line among Fig. 1, and wherein the ratchet of the ratchet of brake disc and braking and locking dish is in disengaged position;
Figure 13 is the broken section enlarged drawing along H-H line among Fig. 1, and it shows the plugging state of the utility model drill chuck, and wherein the ratchet of the ratchet of brake disc and braking and locking dish is in the position of engagement;
Figure 14 is that wherein the control part of actuating sleeve is arranged in the driver slot of braking and locking dish along the broken section enlarged drawing of the J-J line among Fig. 1, and the ratchet of the ratchet of brake disc and braking and locking dish is in a disengaged position;
Figure 15 is the broken section enlarged drawing along the J-J line among Fig. 1, and it shows the locking state of locking of the present utility model, the control part jack-up braking and locking dish of actuating sleeve wherein, and the ratchet of the ratchet of braking and locking dish and braking and locking dish is in the position of engagement;
Figure 16 is the cutaway view of the jump ring that is located by connecting in the utility model;
Figure 17 is the vertical view of the jump ring that is located by connecting shown in Figure 16;
Figure 18 is the cutaway view along the A-A line among Fig. 1, and wherein the rear drive hole of the back projection of actuating sleeve and drive sleeve is combined together;
Figure 19 is the cutaway view along the A-A line among Fig. 1, and wherein the front wheel driving hole of the preceding projection of actuating sleeve and drive sleeve is combined together.
The specific embodiment
Of the present utility model have that locking and drill chuck reverse direction brake function has the locking locking functions and jaw retreats braking function.The locking locking functions makes the jaw of drill chuck keep firmly clamping drilling tool and can not get loose under the vibratory impulse operating mode; Jaw retreats braking function can prevent jaw under the state of fast setback, and the lower surface that the screw thread at its middle part stops half section and nut chokes, and produces that excessive frictional force is blocked and can't the manual unlocking drill chuck.
Referring to Fig. 1, show cutaway view according to the drill chuck that the utlity model has locking and reverse direction brake function.This drill chuck comprises drill body 1, and this drill body 1 is the single-revolution body, and its rear portion is provided with internal thread hole, external cylindrical surface.Screwed hole is used for being connected with the screw rod of the power output shaft of electric drill, and communicates with centre bore that the front portion of drill body 1 is provided with.External cylindrical surface is used for cooperating with the center positioning hole of overcoat 9, thereby support overcoat 9, and the keyway 101 that also is provided with the keyway 102 of annular on the external cylindrical surface and extends vertically, keyway 102 be used for and the jump ring 11 that is located by connecting (as Figure 16, shown in Figure 17) annular lip 113 clampings cooperate, keyway 101 is used for and key 112 grafting of the jump ring 11 that is located by connecting cooperate, and another key 111 on the jump ring 11 that is located by connecting inserts again in the keyhole on the overcoat 9, thereby by the jump ring that is located by connecting, overcoat 9 is rotated with drill body 1 synchronously by not only axially but also the circumferential rear end that is fixed on drill body 1.
Overcoat 4 is sleeved on outside the drill body, which is provided with the slot and the draw-in groove 41 of pegging graft for actuating sleeve 7, and the front end of overcoat also is provided with jump ring, is used for the axial location of overcoat 4.In addition, the outside of overcoat also is provided with front shroud 12, and an end of front shroud 12 snaps in the draw-in groove 41, and the other end is connected on the drill body 1.
Be provided with three its axes intersect any inclined hole on the drill body axis on the drill body 1, be equiped with movably jaw 2 respectively in three inclined holes on drill body 1, one side of jaw 2 is provided with the part screw thread, and another side is provided with the seamed edge parallel with the axis of drill body 1, is used for the clamping tool handle.Nut 3 is sleeved on the drill body 1, the part threaded engagement on internal thread on it and the jaw 2, and rotating nut 3 can make jaw 2 slide up and down in the inclined hole of drill body 1, thereby jaw 2 can be clamped or the back off tool handle.The medium position of drill body 1 outer surface is provided with the force-bearing table 105 of annular protrusion, is provided with thrust bearing component 10 between force-bearing table 105 and nut 3.
Referring to Fig. 2 and Fig. 3, it shows a kind of structure of brake disc 6.On brake disc 6, be provided with from downward a plurality of elastic pawls 61 that extend of body and the positioning key 63 that extends internally.Referring to Fig. 4 and Fig. 5, it shows the brake disc of another kind of structure, promptly composite braking dish 6 '.This composite braking dish 6 ' be with brake disc 6 differences, this composite braking dish 6 ' on also be provided with a plurality of elastic claws 26 of downward extension ', here, the number of elastic pawl and elastic claw is three, the number of positioning key is one, elastic claw, elastic pawl and the positioning key of other number can be set as required, in other embodiments.
Referring to Fig. 6 and Fig. 7, it shows braking and locking dish 5.On the card of braking and locking dish 5, be provided with ratchet 51 that is arranged in plate-like and the driver slot 54 that is recessed into from the card edge, the bottom of braking and locking dish is a guide part 53, the sidewall of guide part 53 extends radially inwardly, form root edge 55, when jaw retreated, this root edge 55 can contact with the top of jaw 2.Also be provided with longitudinal extension on the sidewall of guide part 53, run through the keyway 52 of root edge 55.Here, the number of keyway is two, as required, in other embodiments, can offer the keyway of other number.
Referring to Fig. 8 and Fig. 9, it shows drive sleeve 7, and the sidewall of drive sleeve 7 is provided with rear drive hole 72 and front wheel driving hole 76, and has certain circumferential interval between the forward and backward drive hole.The bottom of drive sleeve 7 is set on the nut 3 and with nut 3 and is fixed together, and drives to divide body nut 3 to rotate.The cavity 74 of admitting guide part 53 and the horizontal keys 78 that extend to cavity 74 inside are formed at the top of drive sleeve 7, and horizontal key 78 is used for and keyway 52 cooperates.When the guide part 53 of braking and locking dish was positioned at the cavity 74 of drive sleeve, keyway 52 just can be contained in horizontal key 78 wherein, and like this, the braking and locking dish not only can be along the endwisely slipping of drive sleeve, and can be stable remain in the drive sleeve.
Referring to Figure 10 and Figure 11, it shows actuating sleeve 8.The bottom of actuating sleeve 8 is provided with a plurality of slotting keys 84, is used for inserting the keyhole of overcoat 4, thereby rotates synchronously with overcoat.The top of actuating sleeve 8 is control part 81, and the both sides of control part are Transition edges 85, and Transition edges 85 can be the part of linearity, circular-arc or cam curved surface.Control part than lower position, be provided with back protruding 82 and preceding protruding 83 of setting at interval, forward and backward protruding 83,82 cooperate with forward and backward drive hole 76,72 respectively, are used to drive the rotating of drive sleeve 7, thus the clamping of locking or unclamping 2 pairs of pads of jaw., be provided with two control parts on the actuating sleeve here, according to actual needs, the number of control part can change, and the circumferential interval of front and back projection also can correspondingly change like this.
The realization of the utility model reverse direction brake function is described below in conjunction with Fig. 1, Figure 12 and Figure 13.As shown in figure 12, be provided with spring 26 between brake disc 6 and the braking and locking dish 5, the two ends of spring 26 hold out against brake disc 6 and braking and locking dish 5 respectively, thereby be partition adjustable between brake disc 6 and the braking and locking dish 5, ratchet 61 on the brake disc and the ratchet 51 on the braking and locking dish are in disengaged condition at this moment.Certainly above-mentioned partition adjustable can also otherwise be realized, composite braking dish 6 as shown in Figure 4 and Figure 5 '.A plurality of elastic claws 26 of this composite braking dish 6 ' extension downwards ' can realize the purpose of partition adjustable equally expect that easily elastic claw can also be arranged on the braking and locking dish.
In this preferred embodiment, grip the drill chuck overcoat on the other hand, start electric drill and high speed reverse rotation when jaw is retreated fast, the top of the jaw 2 that retreats holds out against the root edge 55 of braking and locking dish 5, and the braking and locking dish upwards slides at the axis of the effect lower edge of pressure drive sleeve, finally, ratchet and ratchet engagement as shown in figure 13, retreat jaw if be rotated further overcoat this moment, then following situation can appear, i.e. the relative motion of ratchet and ratchet.Since ratchet ratchet motion relatively in one direction, and in the opposite direction, the motion of the relative ratchet of ratchet then is prevented from.In this preferred embodiment, can set like this, ratchet ratchet relatively clockwise rotates, then ratchet is prevented from relative to rotating of ratchet in the counterclockwise direction, according to the principle of relative motion, promptly the relative ratchet of ratchet is rotatable in the counterclockwise direction, and cannot rotate in the clockwise direction.Thereby rotating counterclockwise of brake disc can be delivered on the braking and locking dish by the engagement of ratchet and ratchet, realize that braking and locking dish and brake disc rotate synchronously, because brake disc and drill body are the relations of rotating synchronously, braking and locking dish and drive sleeve also are the relations of rotating synchronously, drive sleeve also is the relation of rotating synchronously with dividing body nut, jaw and drill body also are the relations of rotating synchronously, thereby divide body nut and jaw not to have relative motion, divide body nut not retreat at the driving jaw.Promptly when ratchet and ratchet engagement, the jaw setback stops.
Specify actuating sleeve 8 below in conjunction with Fig. 1, Figure 18 and Figure 19 and how to drive drive sleeve 7.Drive sleeve 7 is positioned at the inboard of actuating sleeve 8.As shown in figure 18, back protruding 82 of actuating sleeve with rear drive hole 72 engagement of drive sleeve.As shown in figure 19, preceding protruding 83 with front wheel driving hole 76 engagement.The forward rotation overcoat, i.e. rotating jacket counterclockwise, actuating sleeve can forward position shown in Figure 19 to from position shown in Figure 180, be rotated further overcoat, then actuating sleeve and drive sleeve synchronous forward rotation.Otherwise the backward rotation overcoat promptly clockwise rotates overcoat, and actuating sleeve can forward position shown in Figure 19 to from position shown in Figure 180, be rotated further overcoat, and then actuating sleeve and drive sleeve synchronous backward rotate.
In addition, rotate position shown in Figure 19, perhaps forward position shown in Figure 180 to, need overcome certain resistance from position shown in Figure 19 from position shown in Figure 180.In the course of the work, this resistance can prevent that the overcoat backward rotation from unclamping jaw, avoids causing the accident.
Above-mentioned actuating sleeve drives drive sleeve by the engagement of projection and drive hole, in other optional embodiment, can also have multiple drives structure, be provided with elastic bumps as drive sleeve, be respectively equipped with outward extending load key in the circumferential both sides of elastic bumps, and actuating sleeve is provided with the correspondingly driving key between two load keys, can rotates by both forward and reverse directions thereby drive key, and respectively with the load key contacts, drive drive sleeve.
The realization of the utility model locking locking functions is described below in conjunction with Fig. 1, Figure 14 and Figure 15.As shown in figure 14, when back projection 82 and 72 cooperations of rear drive hole, the control part 81 on the actuating sleeve 8 is arranged in driver slot 54.When rear drive hole 72 transpositions of the relative drive sleeve 7 of back projection of actuating sleeve are deviate from, the control part of actuating sleeve is owing to be provided with Transition edges 85, and the braking and locking dish can endwisely slip on drive sleeve, thereby the control part of actuating sleeve can be with braking and locking dish jack-up in rotation process.In rotation process, easily from driver slot, produce in order to make control part, on the one hand Transition edges can have the shape that reduces resistance, as the inclined-plane that tilts, arcwall face, cam curved surface etc.On the other hand, can allow the cell wall at driver slot two ends also have Transition edges, as inclined-plane, arcwall face or the cam curved surface that matches with inclined-plane, arcwall face, cam curved surface.
Shown in 15, control part produces from driver slot, the upper end jack-up braking and locking dish of this control part, spring 26 is compressed, and ratchet and ratchet are in the position of engagement, at this moment, preceding projection 83 can be arranged in front wheel driving hole 76, thus actuating sleeve forward drive drive sleeve rotation once more.Though ratchet and ratchet engagement, but because the relative brake disc of braking and locking dish is the relation that rotates counterclockwise, as mentioned above, ratchet and ratchet can relative motions, thereby the engagement of ratchet and ratchet can not hinder the rotation of drive sleeve, thereby can continue to strengthen moment, make jaw clamping tool handle, the relative ratchet of jaw this moment is beated, and sends click, click sound, to show locking.
In the course of the work, because ratchet and ratchet mesh, thereby drive sleeve retreats the trend of unclamping jaw and is prevented from.Up to the backward rotation overcoat, make the relative drive sleeve backward rotation of actuating sleeve, at this moment, preceding protruding 83 relative front wheel driving hole 76 transpositions are deviate from, along with the rotation of actuating sleeve, the control part of actuating sleeve comes back in the driver slot of braking and locking dish, meanwhile, the braking and locking dish is thrown off with brake disc under the effect of the elastic restoring force of spring 26, thereby braking sleeve can continue to be reversed rotation, makes jaw back off tool handle.When continuing the backward rotation overcoat, can repeat Figure 12, plugging process shown in Figure 13 again.
The above is a specific embodiment of the utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Description of reference numerals
1 drill body, 2 jaws, 26 springs
26 ' elastic claw, 3 nuts, 4 overcoats
41 draw-in grooves, 5 braking and locking dishes, 51 ratchets
52 keyways, 53 guide parts, 54 driver slots
55 root edges, 6 brake discs, 61 ratchets
63 positioning keys, 6 ' composite brake disc, 7 drive sleeve
76 front wheel driving holes, 72 rear drive holes, 78 horizontal keys
8 actuating sleeves, 81 control parts, 82 rear projections
83 front protruding 85 Transition edges 84 are inserted key
9 rear cover 10 thrust bearing components 11 jump ring that is located by connecting
111 keys, 112 keys, 101 keyways
102 keyways, 12 front shrouds, 13 jump rings
105 force-bearing tables, 113 annular flange flange
Claims (10)
1. one kind has locking and drill chuck reverse direction brake function, comprising: drill body, and a plurality of jaws, nut, overcoat, the back cover is characterized in that: also comprise
Drive sleeve is set on the described nut and drives described nut and rotates;
Actuating sleeve is fixed in described overcoat and drives described drive sleeve;
The braking and locking dish can be connected on the described drive sleeve axially slidably, which is provided with ratchet;
Brake disc is installed on the described drill body and with described drill body and rotates synchronously, which is provided with the ratchet that matches with described ratchet, is provided with partition adjustable between wherein said brake disc and the described braking and locking dish;
Wherein, described ratchet is meshed with described ratchet when the described jaw jack-up that described braking and locking dish is retreated.
2. according to claim 1 have locking and drill chuck reverse direction brake function, it is characterized in that, described drive sleeve is provided with horizontal key, described braking and locking dish is provided with axially extended keyway, and described braking and locking dish can be connected on the described drive sleeve axially slidably by described keyway and cooperating of described horizontal key.
3. according to claim 1 and 2 have locking and drill chuck reverse direction brake function, it is characterized in that, is provided with the spring that is used for partition adjustable between described brake disc and the braking and locking dish.
4. according to claim 1 and 2 have locking and drill chuck reverse direction brake function, it is characterized in that, described brake disc is provided with a plurality of elastic claws that extend towards described braking and locking dish direction.
5. one kind has locking and drill chuck reverse direction brake function, comprising: drill body, and a plurality of jaws, nut, overcoat, the back cover is characterized in that: also comprise
Drive sleeve is set on the described nut and drives described nut and rotates;
Actuating sleeve is fixed in described overcoat and drives described drive sleeve, which is provided with control part;
The braking and locking dish can be connected on the described drive sleeve driver slot which is provided with ratchet and hold described control part axially slidably;
Brake disc is installed on the described drill body and with described drill body and rotates synchronously, which is provided with the ratchet that matches with described ratchet, is provided with partition adjustable between wherein said brake disc and the described braking and locking dish;
Wherein, described ratchet and ratchet are thrown off engagement when described control part is arranged in described driver slot; Described control part holds up described braking and locking dish, described ratchet and ratchet engagement when leaving described driver slot.
6. according to claim 5 have locking and drill chuck reverse direction brake function, it is characterized in that described control part has the edge of surface blending.
7. describedly has locking and drill chuck reverse direction brake function according to claim 5 or 6, it is characterized in that, described drive sleeve is provided with horizontal key, described braking and locking dish is provided with axially extended keyway, and described braking and locking dish can be connected on the described drive sleeve axially slidably by described keyway and cooperating of described horizontal key.
8. according to claim 7 have locking and drill chuck reverse direction brake function, it is characterized in that, is provided with the spring that is used for partition adjustable between described brake disc and the braking and locking dish.
9. according to claim 7 have locking and drill chuck reverse direction brake function, it is characterized in that, described brake disc is provided with a plurality of elastic claws that extend towards described braking and locking dish direction.
10. according to each described drill chuck with locking and reverse direction brake function in the claim 5,8 or 9, it is characterized in that drive sleeve is provided with forward and backward drive hole, actuating sleeve is provided with the forward and backward projection that drives described forward and backward drive hole respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620012256 CN2902532Y (en) | 2006-04-21 | 2006-04-21 | Drill clamping head having anti-loosing and back ward braking function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620012256 CN2902532Y (en) | 2006-04-21 | 2006-04-21 | Drill clamping head having anti-loosing and back ward braking function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2902532Y true CN2902532Y (en) | 2007-05-23 |
Family
ID=38077935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620012256 Expired - Fee Related CN2902532Y (en) | 2006-04-21 | 2006-04-21 | Drill clamping head having anti-loosing and back ward braking function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2902532Y (en) |
-
2006
- 2006-04-21 CN CN 200620012256 patent/CN2902532Y/en not_active Expired - Fee Related
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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: 20070523 |