CN2403526Y

CN2403526Y - Chuck structure with locking positioning

Info

Publication number: CN2403526Y
Application number: CN 00216393
Authority: CN
Inventors: 谢春菊
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-02-01
Filing date: 2000-02-01
Publication date: 2000-11-01
Anticipated expiration: 2010-02-01

Abstract

The utility model relates to a chuck structure with locking positioning, which comprises a circular column body with a head end and a tail end, a plurality of clamping jaws, a spacing ring, a drive seat and outer casing, wherein, the middle of the circular column body is provided with a plurality of channels with inclination angles; the clamping jaws are arranged in the channels; the spacing ring is sheathed at the middle of the circular column body, and the center of the spacing ring is provided with a plurality of penetrating grooves at equal interval for being penetrated by the clamping jaws; the drive seat is sheathed at the head end of the circular column body in a rotary mode, and is covered and engaged on the clamping jaws; the outer casing is covered on the drive seat and is provided with an upper casing and a lower casing. Users can rotate the upper casing to drive the clamping jaws to shrink inwards to clamp a tool tightly, and the clamping jaws are not largely loosened because of shock or torque force through the positioning generated by the outer casing and the spacing ring.

Description

The chuck structure of tool locking positioning

The utility model relates to a kind of chuck structure, and the electronic or pneumatic type drilling tool use for collocation tool line shaft more particularly, relates to a kind of chuck structure by manual locking and tool locking positioning function.

The general drill bit clamp structure of being commonly used on the market, it mainly is to be connected with a chuck body on a rotating shaft, this body is provided with a rotatable shell and the fixed housing turned outward, and is equipped with the jaw of several squints in this body; The user turns shell by rotating this, and the control jaw is oblique to advance or shrink back to drive can to cooperate the thread rotation, with clamping that reaches drill bit or the purpose that unclasps.

Yet; the drill bit clamp structure that this kind commonly used is after locking; this is turned shell and still is under the no positioning states; therefore this turns shell easily because of vibrations or the commentaries on classics of the excessive generation pine of torsion; so that jaw produces loosening phenomenon, so easily causes drill bit to get loose and drops, and uses to such an extent that the user often in use shuts down and locks drill bit again; thereby not only cause user's inconvenience greatly, and easily cause user's danger.

The utility model is because overcome the defective of prior art, the positive research and development so that self-locking chuck structure improvement to be provided.

Main purpose of the present utility model provides a kind of chuck structure of tool locking positioning, this chuck structure grips upper shell by hand and rotates, be provided with driving the rotation of this driving seat, make to drive seat and drive that this jaw is oblique to advance or shrink back, with the clamping that reaches drill bit or unclasp; And this spacing ring can produce clutch action with upper shell, only need behind the locking drill bit the past bottom offset of upper shell, to make itself and spacing ring produce engagement, and by the chimeric location of holding ring of the groove and the lower house of upper shell, can consolidate the structure of locker head integral body, thereby make this jaw not because of vibrations or the excessive generation of torsion get loose, to keep the fastening strength of jaw.

The further purpose of the utility model provides a kind of chuck structure of tool locking positioning, this chuck structure is slidingly equipped with a bearing group on this body top end face, wherein this bearing block can be made by the rubber material, and interior extension is provided with the flexure strip of a tool radial openings, but elasticity fixes this drill bit, release must grip the trouble of drill bit with hand, and can prevent that drill bit from dropping after chuck unclasps.

The purpose of this utility model realizes that by following main technical schemes the chuck structure that promptly has locking positioning comprises: one has the cylindrical body of head end and tail end, is provided with the passage at several inclination angles in the middle of this body; Several are installed on the jaw in the passage; One tool rotating manner is sheathed on the body head end and coats the driving seat that meshes on the jaw; One is coated on the shell body that drives seat; It is characterized in that this chuck with locking positioning comprises that also one is sheathed on the spacing ring in the middle of this cylinder, its central authorities equidistantly are arranged with several and wear groove for what jaws wore; This shell body is provided with upper shell and lower house.

Major advantage of the present utility model has:

1. chuck of the present utility model in use can be because of vibrations or the excessive generation of the torsion phenomenon that gets loose, thereby having avoided in use shutting down locks drill bit again or cause user's personal injury.

2. the utility model can make drill bit remain in the axis hole center when jaw tightens up, and does not need separately more can to prevent drill bit dropping after chuck unclasps with hand steered positive drill bit, thereby also can avoid because the accident that drill bit drops and causes.

Below be the utility model brief description of drawings:

Fig. 1 is the three-dimensional exploded view of the utility model chuck.Be clearly shown that wherein the utility model chuck plays the key member of locking positioning effect as driving seat (40), upper shell 61, lower house 65 and spacing ring 30 etc.

Fig. 2 is the cutaway view of the utility model chuck.

Fig. 3 is the cutaway view of the utility model chuck locking drill bit.

Fig. 4 is the cutaway view of locating behind the utility model chuck locking drill bit, and the holding ring 66 that wherein demonstrates lower house 65 is pushed in the groove 64 of upper shell 61 and reaches the location.

Fig. 5 is the cutaway view of the utility model second embodiment.

Fig. 6 is the vertical view of the utility model second embodiment.

In above-mentioned Fig. 5 and Fig. 6, demonstrated a bearing group 50 ', can realize the 2nd purpose of the present utility model by it.

Fig. 7 is the schematic diagram that the utility model cooperates spanner to use.

Below in conjunction with accompanying drawing the utility model is done further explanation.

See also Figure 1 and Figure 2, the chuck structure of a kind of tool locking positioning of the present utility model, wherein this chuck structure mainly is to include:

One body 10, it is one to have the cylinder of head end and tail end, its central authorities axially are equipped with axis hole 11, put for drill bit 70, in the middle of this body 10, be provided with the passage 12 at several inclination angles, and be provided with shallow slot 121, when making, produce the burr phenomenon to prevent this passage 12 in each passage 12 stomatodeum; Wherein these body 10 head ends are provided with an arc groove 13, equidistantly are equipped with several axial grooves 14 in its tail end surface, and are concaved with a C shape annular groove 15 in tail end, for C shape ring folder 151 holdings installing;

Several jaws 20 are installed among the passage 12, and these jaw 20 front ends are provided with clamping face 21, and are provided with flank 22 in its tail end;

One spacing ring 30, it is sheathed for this body 10 that its central authorities are provided with centre bore 31, equidistantly be concaved with several in these centre bore 31 peripheries and wear groove 32, for wearing with jaw 20, and in these spacing ring 30 centre bores 31, equidistantly convex with several geosynclinal blocks 33, be provided with being sleeved in the axial groove 14 of body 10, wherein these spacing ring 30 peripheries are provided with outer groove 34;

One drives seat 40, and it is to be sheathed on the head end of body 10 with rotating manner, is provided with taper thread 41 in its inboard, bottom, is provided with coating on the flank 22 that is engaged in jaw 20, makes to drive to drive synchronously when seat 40 rotates that each jaw 20 is oblique to advance or shrink back; And be provided with locating hole 42 in driving seat 40 tops, be provided with a built-in ball 421, to make this ball 421 protruding being exposed in the arc groove 13, wherein the locating hole 42 outer tight fits of this driving seat 40 have a ring 422, be provided with forming the radially spacing of ball 421, but for driving seat 40 sliding sleeves outside body 10; Be concaved with several pod 43 in these driving seat 40 outer peripheral edges; And the top in this driving seat 40 is provided with polygonal trough rim 44, for cooperating spanner 80 to use with the user, with the clamping strength that improves drill bit 70 or be easy to dismantle;

One bearing group 50 is provided with one in this driving seat 40 and comprises bearing block 51, bearing ball 52 and packing ring] 53 bearing group 50, be provided with being slidedly arranged on the end surface of body 10;

One shell body 60, it is coated on and drives outside the seat 40, and wherein this shell body 60 includes: a upper shell 61, these upper shell 61 inboards convex with several rail bars 62, are provided with sliding sleeve in the pod 43 that drives seat 40, this upper shell 61 can be driven drive seat 40 rotations; Wherein these upper shell 61 bottom inner faces are provided with groove groove 63, produce the clutch effect for the outer groove 34 with spacing ring 30; And be provided with a groove 64 in these upper shell 61 bottom outer rims; One lower house 65, these lower house 65 inner faces are convexly equipped with a holding ring 66, produce location mechanism for the groove 64 with upper shell 61, and are provided with several contact posts 67 in these lower house 65 center rings, are provided with these spacing ring 30 fits of contact and are fixed on the body 10; Wherein, this lower house 65 is to be installed in the tail end that drives seat 40 in friction tight mode, is combined into one with this driving seat 40;

Behind the bright Liao said structure, be described in detail as follows with regard to action of the present utility model more now:

See also shown in Figure 3, when using, the user earlier drill bit 70 is inserted in the axis hole 11 of body 10, two hands can grip housing 61 and lower house 65 respectively, rotating upper shell 61, and by the cooperating of this rail bar 62 and pod 43, drive this drivings 40 synchronously and rotate, the flank 22 of this jaw 20 is driven taper thread 41 drivings of seat 40 simultaneously, make each jaw 20 produce oblique advancing synchronously, the clamping face 21 that orders about this jaw 20 grips drill bit 70, to reach the purpose of drill bit 70 clamping lockings.

The utility model is behind this drill bit 70 of locking, upper shell 61 is promoted (as shown in Figure 4) toward lower house 65 directions, make the groove 64 of upper shell 61 admit holding ring 66 and the fit fixing, order about the groove groove 63 engagement location of outer groove 34 with the upper shell 61 of this spacing ring 30 synchronously, because this lower house 65 is to be fixedly arranged on the body 10 with spacing ring 30, so can make this chuck structure closely be consolidated into one, so that this upper shell 61 is because of vibrations or the commentaries on classics of excessive generations of torsion pine, to keep the fastening strength of jaw 20.

Otherwise, when the user desires to pull down drill bit 70, then need up to promote earlier upper shell 61 in order to groove 64 is broken away from holding ring 66, the groove groove 63 that makes this upper shell 61 forms with the outer groove of spacing ring 30 34 and separates shape, but make these upper shell 61 backward rotation, order about this jaw 20 oblique shrinking back synchronously, to reach the purpose that unclasps drill bit 70.

As shown in Figure 7, these driving seat 40 front ends are provided with a polygonal trough rim 44, can be thereon for spanner 80 sockets, the user can conveniently lock this drill bit 70 like this, provide drill bit 70 bigger fastening strength, drive seat 40 with certain locking drill bit 70 or more convenient user's backward rotation, with the drill bit 70 that takes off packing.

See also Fig. 5 and shown in Figure 6 again, it is the 2nd embodiment of the present utility model, wherein, this driving seat 40 ' is to be sheathed on the head end of body 10 with rotating manner, be provided with taper thread 41 ' in its inboard, bottom, be provided with coating and be engaged on the flank 22 of jaw 20, and be concaved with several pod 43 ' in these driving seat 40 ' outer peripheral edges; And this driving seat 40 ' its can further design and be the open shape in top, and tight fit has a ring 422 ' outside the locating hole 42 ' of this drivings 40 ', is provided with forming the radially spacing of ball 421 '; The top of this ring 422 ' is provided with dihedral hitching post 423 ', cooperates spanner 80 to use for the user, with the clamping strength that improves drill bit 70 or be easy to dismounting;

One bearing group 50 ', be provided with a bearing group 50 ' that comprises bearing block 51 ', bearing ball 52 ' and packing ring 53 ' in this driving seat 40 ', be provided with being slidedly arranged on the end surface of body 10, wherein, this bearing block 51 ' can be made by the rubber material, its central authorities' extension is provided with a flexure strip 511 ', and the heart offers a radial opening 512 ' among flexure strip 511 '; Because the flexure strip 511 ' in this bearing block 51 ' has suitable flexible, produce elastic bending in the time of in drill bit 70 is inserted axis hole 11, use the size that changes this opening 512 ', with the drill bit 70 that is applicable to various sizes, and this drill bit 70 of generation elastic force fixing, can make drill bit 70 remain in axis hole 11 centers when jaw 20 tightens up, not need separately with hand steered positive drill bit 70, it is impaired to prevent that more drill bit 70 from dropping after jaw 20 unclasps.

Taking a broad view of above institute says, the utility model utilizes this spacing ring 30 and upper shell 61,61 ' cooperate and produce clutch action, only need behind locking drill bit 70 holding ring 66 pushed groove 64 in and locate, can fix whole chuck structure fast, and this drill bit 70 is not got loose because of vibrations or the excessive generation of torsion, to keep the fastening strength of jaw 20; And by the setting of flexure strip 511 ' radial openings 512 ', fix drill bit 70, can prevent that drill bit 70 from dropping after chuck unclasps with elasticity.

Claims

1, a kind of chuck structure with locking positioning, this chuck comprises:

One has the cylindrical body (10) of head end and tail end, is provided with the passage (12) at several inclination angles in the middle of this body (10);

Several are installed on the jaw (20) in the passage (12);

One tool rotating manner is sheathed on body (10) head end and coats the driving seat (40) that meshes on the jaw (20);

One is coated on the shell body (60) that drives seat (40); It is characterized in that this chuck comprises that also one is sheathed on the spacing ring (30) in the middle of this cylindrical body (10), its central authorities equidistantly are arranged with several and wear groove (32) for what jaws (20) wore;

This shell body (60) is provided with upper shell (61) and lower house (65).

2, a kind of chuck structure with locking positioning as claimed in claim 1 is characterized in that, the end end to end of this body (10) is respectively equipped with an arc groove (13) and several axial grooves (14), and is provided with shallow slot (121) in each passage (12) stomatodeum of body (10).

3, a kind of chuck structure with locking positioning as claimed in claim 1, it is characterized in that, this driving seat (40) be provided with can built-in ball (421) locating hole (42), this ball (421) is also protruding to be exposed in the arc groove (13), and the radially spacing ring (422) of this locating hole (42) outer close-fitting unification formation ball (421).

4, a kind of chuck structure with locking positioning as claimed in claim 1 is characterized in that, this driving seat (40) top is provided with polygonal trough rim (44), and its outer peripheral edges equidistantly are provided with several pod (43).

5, a kind of chuck structure with locking positioning as claimed in claim 4, it is characterized in that, be provided with in this driving seat (40) one comprise bearing block (51), bearing ball (52) and packing ring (53) be provided with being slidedly arranged on bearing group (50) on body (10) end surface.

6, a kind of chuck structure with locking positioning as claimed in claim 1 is characterized in that, this spacing ring (30) central authorities equidistantly are convexly equipped with the several geosynclinal blocks (33) that are provided with being sleeved in the axial groove (14), and outside its periphery is provided with groove (34).

7, a kind of chuck structure with locking positioning as claimed in claim 1, it is characterized in that, this upper shell (61) inboard convexes with for the several rail bars (62) that are sleeved in the pod (43), and be provided with the groove groove (63) that supplies to produce with spacing ring (30) the clutch effect in upper shell (61) bottom inner face, wherein this upper shell (61) bottom outer rim is provided with a groove (64).

8, a kind of chuck structure with locking positioning as claimed in claim 1, it is characterized in that, this lower house (65) inner face is convexly equipped with one and supplies to block the holding ring (66) of setting the position with groove (64), and is equipped with the contact post (67) that several are provided with contact spacing ring (30) location in its central authorities.

9, a kind of chuck structure with locking positioning as claimed in claim 1, it is characterized in that, this driving seat (40 ') top can be an open end face, and tight fit one is provided with forming the radially spacing ring (422 ') with dihedral hitching post (423 ') of ball (421 ') on it.

10, a kind of chuck structure with locking positioning as claimed in claim 1 is characterized in that, this bearing block (51 ') can be made by the rubber material, and its central authorities establish the flexure strip (511 ') of a tool radial openings (512 ').