CN2387994Y - Self-locking clamping chuck with revolving shaft - Google Patents

Abstract

A self-locking clamping chuck with revolving shaft contains an identity. One end of the identity is connected with a rotary axle. The other end of the identity is tipsily filled with a plurality of clamping jaws with flanks on their exterior edges along axis direction. Spiral base is engaged with the clamping jaws with its conicity flank of the interior edge. A body case divides into an upper case and a lower case. The upper case and the lower case coat the head end part and the back end part of the identity respectively. An elastic sinker loop group is arranged in the lower case. The elastic sinker loop group is differentiated as a spring and a sinker loop. The ordinary state elasticity underprops the upper case. The clamping jaws perform forward moving or backward moving along spiral direction following the motive power while using in order to clamp or loose the concave bit. Then with the control of the upper case, the sinking model of the spiral base and the sinker loop can be adjusted to achieve automatic locking of the clamping jaws.

Description

The self-locking chuck that the collocation rotating shaft uses

The utility model relates to a kind of chuck structure, uses with the electronic or pneumatic type transmission device of collocation dynamical type, more particularly, is meant a kind of sleeve function that has concurrently, but and mat manually or automatic mode, reach and improve the chuck new structure that clamps strength.

Electric drill commonly use clamp structure, see also shown in Figure 1, it mainly has a body that is connected with rotating shaft 1, this body 1 is outer be provided with one can only rotate in the original place turn shell 2, and a fixed housing 3, and the interior ring of this body 1 is established the jaw 4 of several squints, when turning shell 2 and rotate, can control that these jaws 4 are oblique to advance or shrink back, reach the clamping of drill bit 5 or unclasp.

But the drill bit clamp structure that this kind commonly used; must rotate this with user's the singlehanded application of force and turn shell 2; the another hand then helps drill bit 5 to insert in the jaw 4; when locking, can decontrol; not only operation inconvenience; littler because of turning shell 2 application of force areas; often cause to keep really the chucking power between drill bit 5 and the jaw 4; and the chucking power that drill bit 5 takes place is when not enough; then need shutdown to use hand rotation in addition and turn shell 2 application of force clamping again, cause quite inconvenience of user, moreover in use; it turns shell 2; fixed housing 3 all can rotate, the danger that easily causes the user to operate.

The purpose of this utility model is to overcome the defective of prior art, the self-locking chuck that provides a kind of rotating shaft of arranging in pairs or groups to use.

The purpose of this utility model is realized that by following technical scheme according to the self-locking chuck that the collocation rotating shaft that the utility model proposes uses, this chuck comprises a body and several jaws, and characteristics are:

A. this body is cylindric and distinguishes cephalic par, ring seat and tail end, is provided with the axis hole of hollow form in this cephalic par, and sets up the guide groove of angle assortment on the ring seat separately, and for crossing with axis hole, and this tail end can be assembled the rotating shaft of transmission device;

B. these several jaws slidably in each guide groove on this body, form flank outside each jaw;

And also have: a spiral shell seat is to coat to rotate on the ring seat of this body, and screws togather with the flank of jaw;

One spiral shell seat guard ring, be axial location on this body, closely screw togather to make spiral shell seat and jaw;

One housing is to be provided with upper shell and lower house, is coated on the cephalic par and the tail end of this body respectively;

One elastic impact ring group is to be located in this lower house, and distinguishing has spring and impact ring, shores this upper shell in order to normality elasticity, and this impact ring can be rotated by upper shell, and produces clutch with the spiral shell seat;

One receiver is the cephalic par that is fixed in this body, in order to upper shell and spiral shell seat guard ring axial limiting;

Two bearing assemblies are to be located on this spiral shell seat and the ring seat respectively and between receiver and the upper shell;

One contiguous block is to be located in the lower house, can be arranged in outer and links into an integrated entity with transmission device, uses to safeguard that middle shell is unlikely to rotate with rotating shaft;

By this,, can conflict and impact ring axial displacement up and down, produce clutch, reach jaw respectively and run well and auto lock with order and spiral shell seat when the user rotates upper shell.

Further, in the utility model, the spiral shell seating face also is provided with several slotted eyes and the root edge face is provided with several tooth pieces; Impact ring system and be a ring-type, be provided with several tooth bars, and rim surface is provided with several tooth pieces in lateral margin, can be for engaging mutually with the tooth piece of this spiral shell seat; This upper shell is established a perforation, and the root edge face is provided with several dark, shallow slot holes of shape at interval, can embed for the tooth bar head end that impacts ring, side forms the wedge shape rib in order to the lower house axial limiting in addition, and the wear-resisting ring of establishing a relative shape is also filled out in dark, the shallow slot hole of upper shell; The inner face of lower house then is provided with some longitudinal channels, can endwisely slip in this conduit for the tooth bar that impacts on the ring; Two sides at the under shed of lower house extend to form relative fan groove; Said again contiguous block is to be ring body, dashes forward downwards and establishes some joint pins, and this joint pin can be extended through outside the two above-mentioned fan grooves, and links into an integrated entity with transmission device; At last, establish polygonal notch in the said receiver, can be for being inserted in the nut dismounting or for the spanner sheathed application of force, and the collocation rod-shaped tool penetrates slotted eye and imposed the reverse application of force by perforation, to make the flank tight engagement of spiral shell seat and jaw.

The utility model has the advantages that: 1, since available hold to be held in adjust its swing offset on the upper shell, use the depth troughed belt of wear-resisting ring, make and impact ring and spiral shell seat generation clutch action, and reach the jaw normal running respectively and impact the locking double-mode automatically, therefore have tangible practical value; 2, owing to contiguous block be set be connected with transmission device, make that housing is unlikely in use rotates with rotating shaft, thereby, assurance user's safety; 3, owing to can polygonal notch can be enclosed within on the nut,, reach dismounting to nut through the rotating of transmission device by the receiver of body packing connection; 4, owing to can stretch into rod-shaped tool in the slotted eye of spiral shell seat, and the cooperating of spanner and receiver, enable therefore, can manually improve the drill bit clamping force or give dismounting with the relative reverse operating of holding of rod-shaped tool with spanner.

Accompanying drawing of the present utility model is simply described as follows:

Fig. 1 is a stereo appearance figure of commonly using electric drill and chuck thereof.

Fig. 2 is the perspective exploded view of the utility model chuck structure.

Fig. 3 is the generalized section of the utility model chuck structure.

Fig. 4 is the cross-sectional schematic of the utility model regular event pattern.

Fig. 5 is the cross-sectional schematic of the utility model percussion action pattern.

Fig. 6 is the operation chart that the utility model cooperates rod-shaped tool and spanner.

Fig. 7 is the sheathed nut dismounting of a utility model schematic diagram.

Below, provide better embodiment of the utility model according to Fig. 2～Fig. 7.

See also Fig. 2 and shown in Figure 3, the utility model chuck comprises:

One cylindrical body 10, this body 10 is distinguished cephalic par 11, ring seat 12 and tail end 13, wherein be provided with the axis hole 14 of hollow form in this cephalic par 11, and establish the guide groove 15 of angle assortment on this ring seat 12 respectively, intersect axis hole 14 to be communicated with, this tail end 13 is provided with screwed hole 16 in addition, can screw togather for the rotating shaft 91 of transmission device 90, and is provided with locating slot 17 in the bottom;

Several jaws 20, slidably in each guide groove 15, each jaw 20 outside forms flank 21, and front end then forms clamping face 22;

One spiral shell seat 30 is to coat to rotate on the ring seat 12 of body 10, is provided with taper thread face 31 in it, uses the flank 21 with jaw 20 to screw togather, and the surface is provided with several slotted eyes 32, and is provided with several tooth pieces 33 at the root edge face;

One spiral shell seat guard ring 34 is that axial location is on the cephalic par 11 of body 10, with conflict spiral shell seat 30;

One elastic impact ring group 40, system distinguishes spring 41 and impacts ring 42, wherein, impacting ring 42 is to be a ring-type, vertically is provided with some tooth bars 43 at lateral margin, and these tooth bar 43 head ends two sides are formed with the conical surface, and impact ring 42 rim surface and then be provided with several tooth pieces 44, can engage mutually for the tooth piece 33 of spiral shell seat 30, spring 41 is to be arranged on to impact on the ring 42 root edge faces in addition, shores in order to normality elasticity and impacts ring 42 to top offset;

One housing 50, system is provided with upper shell 51 and lower house 57, wherein this upper shell 51 is the case that goes to upper and lower end opening, be provided with being coated on the cephalic par 11 of body 10, its upper shed inner edge convexes with retainer ring 52, under shed edge face then is provided with several dark, shallow slot holes 53,54 of shape at interval, can be chimeric for tooth bar 43 head ends that impact ring 42, and outer side edges forms wedge shape rib 55; Lower house 57 is the case that goes to upper and lower end opening, be provided with being coated on the tail end 13 of body 10, its upper shed can be socketed on the wedge shape rib 55 of upper shell 51, to keep the axial limiting of lower house 57, and inner face convexes with several longitudinal channels 58 of shape at interval, can endwisely slip in interior for the tooth bar 43 that impacts ring 42, and under shed can wear for tail end 13, and be fixed in the locating slot 17 by keeper 18, extend to form relative fan groove 59 under shed two sides in addition, so that contiguous block 80 stretches through.

One wear-resisting ring 60; system is made by high-abrasive material; be located at the under shed of upper shell 51; dark relatively, shallow slot hole 53,54 is provided with relative dark, shallow slot band 61,62; for protecting upper shell 51 with mutual scarf; and dark, shallow slot band 61,62 2 sides are provided with the conical surface that matches with tooth bar 43 head ends, so that wear-resisting ring 60 when rotating, is beneficial to the upper and lower displacement of tooth bar 43.

One receiver 70, system is provided with Fixed Division 71 and sleeve part 72, this Fixed Division 71 is to be hollow cylindrical, inner wall surface thereof is convexly equipped with some location splines 73, is provided with packing and is inserted in the cephalic par 11 of body 10 and forms fixingly, and outside wall surface more is provided with spacing ring 74, so that when making Fixed Division 71 be inserted in cephalic par 11, can form the abutment face location with the retainer ring 52 of upper shell 51, establish a polygonal notch 75 in the sleeve part 72 in addition, be provided with nut 94 sheathed (referring to Fig. 7);

Two bearing assemblies are to be provided with steel ball circle 76 and packing ring 77, are provided with stacking mutually, and place spacing ring 74 and retainer ring 52 respectively, and between spiral shell seat 30 and the ring seat 12, to increase the smooth-going degree of running and the power of reducing friction;

One contiguous block 80, it is body in the form of a ring, be arranged between spring 41 and the lower house 57, be equipped with some joint pins 81 downwards, this joint pin 81 can be extended through outside two fan grooves 59, and with bolt 92 clampings of transmission device 90, and be subjected to the elastic force of spring 41, and normality and transmission device 90 front end faces are conflicted, and clamping fuses.

After understanding said structure, existing as follows with the utility model action specification:

The utility model is done explanation with a drill bit 93 for the main embodiment that is held instrument; One drill bit 93 is inserted between the clamping face 22 of the axis hole 14 of these bodies 10 and each jaw 20.When rotating shaft 91 is the action direction quick rotation, promptly drive this body 10 and on jaw 20 and then moment rotates, by the taper thread face 31 of spiral shell seat 30 and cooperating of jaw 20 flanks 21, can make 20 moments of jaw turn forward mobile, form the gradually form of past center closing of jaw 20 outer ends, and clamp this drill bit 93, and increase frictional force with clamping face 22, make clamping more firm; And jaw 20 just can't move forward because of gripping this drill bit 93 again, its flank 21 promptly meshes with the taper thread face 31 generation location of spiral shell seat 30, that is locking state, this spiral shell seat 30 begins and then then, and body 10 rotates synchronously, and upper shell 51, lower house 57, spring 41 and impact ring 42 because contiguous block 80 is the relation that the location is sticked in the bolt 92 of transmission device 90, are integral and be connected to each other, unlikelyly rotate, use and quite have practical value and security with rotating shaft 91.

See also shown in Figure 4, it is the action schematic diagram of regular event pattern of the present utility model, the user can force in upper shell 51 and adjust its swing offset, select the shallow slot band 62 and tooth bar 43 scarves location of wear-resisting ring 60, at this moment, impact ring 42 can be subjected to contacting of wear-resisting ring 60 and displacement downwards, the tooth piece 44 that then impacts ring 42 can break away from tooth piece 33 engagements of spiral shell seat 30 synchronously downwards, forms 30 runnings of spiral shell seat and is not subjected to any contact impact.

See also shown in Figure 5; it is the action schematic diagram of the utility model percussion action pattern; when this drill bit 93 is carried out the boring action towards the action direction rotation; when being subjected to the load damping force than big or drill bit 93 chucking powers deficiency; can rotate upper shell 51 in using or in shutting down; because of upper shell 51 does not rotate for user system; therefore; do not have safe misgivings; wear-resisting ring 60 is rotated to deep trouth band 61; at this moment, impact ring 42 can be subjected to spring 41 elastic reset and to top offset, and tooth bar 43 promptly can with deep trouth band 61 chimeric location; and tooth piece 44 also can be engaged in the tooth piece 33 of spiral shell seat 30 synchronously; when making its spiral shell seat 30 rotations, its tooth piece 33 can impact with the tooth piece 44 that impacts ring 42, and the impact ring 42 of rotation direction location then can be gone up; move back and forth in the conduit 58 of lower house 57 down; with the flank 21 of the flank 31 that makes spiral shell seat 39 and jaw 20 firm locking more; thereby, eliminate the gap between screw thread, and provide drill bit 93 to obtain the output of more firm chucking power and heavy torsion.

See also shown in Figure 6, slotted eye 32 positions of these upper shell 51 relative spiral shell seats 30 wherein, offer a perforation 56, be fastened in the slotted eye 32 after can inserting for rod-shaped tool 96, engage sleeves cylinder base 70 is inserted in a spanner 95, imposes reverse operating, with the flank 31 that makes spiral shell seat 30 flank 21 with jaw 20, firm locking reaches the manual teardown of drill bit 93 or increases the clamping effect more.

Moreover, see also shown in Figure 7ly, the inner edge of the utility model receiver 70 forms polygonal notch 75, and it is sheathed to be provided with nut 94, and the running of mat rotating shaft 91 also can reach nut 94 lockings and the effect that gets loose.

Claims (9)

1, a kind of self-locking chuck of the rotating shaft use of arranging in pairs or groups, this chuck comprises body (10) and several jaws (20), it is characterized in that:

A. this body (10) is cylindric and distinguishes cephalic par (11), ring seat (12) and tail end (13), the axis hole (14) of prominent shape in being provided with in this cephalic par (11), and establish the guide groove (15) of angle assortment on the ring seat (12), itself and axis hole (14) intersect, and this tail end (13) can be assembled the rotating shaft (91) of transmission device (90);

B. these several jaws (20) slidably in each guide groove (15), form flank (21) outside each jaw (20);

C. and also have: a spiral shell seat (30) is to coat to rotate on the ring seat (12) of body (10), and screws togather with the flank (21) of this jaw (20);

One spiral shell seat guard ring (34), be axial location on body (10), closely screw togather to make spiral shell seat (30) and jaw (20);

One housing (50) is to be provided with upper shell (51) and lower house (57), is coated on the cephalic par (11) and tail end (13) of body (10) respectively;

One elastic impact ring group (40) is to be located in the lower house (51), and distinguishing has spring (41) and to impact ring (42), and normality elasticity shores upper shell (51), and this impacts ring (42) can be subjected to upper shell (51) rotation, with spiral shell seat (30) generation clutch;

One receiver (70) is the cephalic par (11) that is fixed in this body (10), in order to upper shell (51) and spiral shell seat guard ring (34) axial limiting;

Two bearing assemblies, be located at respectively that this spiral shell seat (34) and ring seat (12) go up and receiver (70) and upper shell (51) between;

One contiguous block (80) is to be located in the lower house (51), and can be arranged in outer and link into an integrated entity with transmission device (90).

2, the self-locking chuck of collocation rotating shaft use according to claim 1 it is characterized in that spiral shell seat (30) surface is provided with several slotted eyes (32), and the root edge face is provided with several tooth pieces (33).

3, the self-locking chuck of collocation rotating shaft use according to claim 1 and 2, it is characterized in that, impacting ring (42) is to be a ring-type, be provided with several tooth bars (43) in lateral margin, and rim surface is provided with several tooth pieces (44), and these tooth pieces (44) engage mutually with the tooth piece (33) of this spiral shell seat (30).

4, the self-locking chuck of collocation rotating shaft use according to claim 1, it is characterized in that, upper shell (51) is established a perforation (56), and the root edge face is provided with several can be for interval shape dark, shallow slot hole (53), (54) of tooth bar (43) the head end embedding of impacting ring (42), and side forms the wedge shape rib (55) to lower house (57) axial limiting in addition.

5, the self-locking chuck that uses of collocation rotating shaft according to claim 4 is characterized in that, the wear-resisting ring (60) of establishing a relative shape is filled out in dark, shallow slot hole (53), (54) of upper shell (51).

6, the self-locking chuck of collocation rotating shaft use according to claim 1 is characterized in that the inner face of lower house (57) is provided with several conduits (58) longitudinally, and the tooth bar (43) that impacts ring (42) endwisely slips in interior.

7, the self-locking chuck of collocation rotating shaft use according to claim 1 is characterized in that two sides of lower house (57) under shed extend to form relative fan groove (59).

8, the self-locking chuck that uses according to claim 1 or 7 described collocation rotating shafts, it is characterized in that contiguous block (80) is to be ring body, the prominent some joint pins (81) of establishing downwards, this joint pin (81) can be extended through outside two fan grooves (59), and links into an integrated entity with transmission device (90).

9, the self-locking chuck of collocation rotating shaft use according to claim 1 is characterized in that, establishes polygonal notch (75) in this receiver (70).

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