CN2237511Y

CN2237511Y - Tool grip holder

Info

Publication number: CN2237511Y
Application number: CN 95224108
Authority: CN
Inventors: 林原禾
Original assignee: Quanbao Industrial Co ltd
Current assignee: Quanbao Industrial Co ltd
Priority date: 1995-10-10
Filing date: 1995-10-10
Publication date: 1996-10-16
Anticipated expiration: 2005-10-10

Abstract

The utility model relates to a tool grip holder, which comprises a grip holder body, a plurality of jaws, a rotary screw cap, a positioning device and outer sleeve. The grip holder body is provided with oblique guide grooves which are alternately provided with equal angles; the jaws are respectively arranged in the guide grooves and are provided with dental formulas; the rotary screw cap is provided with a rotary ring, and an inner ring surface of the rotary ring is provided with inner screw threads which can be intermeshed with the dental formula of the jaws; the positioning device is provided with a fixedly installed first positioning element, and a second positioning element which can slide in a reciprocating mode and can be rotationally arranged on grip holder body; the outer sleeve is fixedly combined together with the second positioning element and can drive the rotary ring to rotate. The grip holder has simple structure and easy use.

Description

Hammer

The utility model relates to a kind of hammer of improvement, is meant especially a kind ofly to utilize hand then the no spoon hammer chuck bolt is tight or that loosen.

Installing screwdriver, nut driver, drill, grinding stone or other machining tool on electronic or pneumatic boring bar tool, with the technology that workpiece is processed, has been well known.But the shank of various machining tools all has different diameters or difform cross section, therefore develops many chucks with adjusting range of broad in prior art, with the various dissimilar instruments of clamping.

In the prior art, a kind of three-jaw geared chuck is arranged, be provided with three jaws that the space also tilts with 120 degree respectively on circumference in this chuck body, utilize nut being meshing with each other by threaded bullet and jaw, make that each jaw can be by the rotation of the screw thread in the nut, the tilt slide that enlarges or shrink, this nut then be by the spanner of the bevel gear on the chuck body carry out to the clamping of workpiece with loosen.

In addition, the general modal working method of boring bar tool is carried out the boring work except utilizing drill bit, also usually utilize some special tool(s)s carry out some other types work (for example: the lock screw, work such as sanding and polishing), so general boring bar tool is when carrying out aforementioned particular job, just must be originally take off, but and change the special tool(s) head of these special tool(s)s of clamping in order to the chuck of clamping drilling bit.

The jack that these existing special tool(s) head great majority have a special geometry, it is one identical with the jack shape of this special tool(s) head and can insert wherein pad that aforesaid special tool(s) then has, therefore these special tool(s)s can directly insert in this jack or from this jack and extract out, and make this special tool(s) can be clamped on this special tool(s) head.

Though clamping promptly of this kind special tool(s) head or replacing instrument must be pulled up the original chuck of this boring bar tool earlier when it uses, and change this special tool(s) head again, so it uses inconvenience considerably.

Though and general hammer also can utilize jaw to clamp aforesaid special tool(s), it must repeatedly screw or loosen jaw when changing special tool(s) at every turn, has therefore caused many temporal wastes.

Because the many disadvantages of existing chuck, main purpose of the present utility model is to propose a kind of frictional force that reduces the chuck internals, and then improves the no spoon chuck of the tight torsion of its bolt.

Another purpose of the present utility model is to propose a kind of assembling and is easy to hammer.

Another purpose of the present utility model is to propose a kind of fast changeable special tool(s), to reduce the hammer of time waste.

The utility model proposes a kind of like this hammer, it is characterized in that, comprising:

One chuck body, it can be installed on this rotating shaft along the central axis of a rotating shaft of aforementioned tools, and to be provided with a plurality of be that the center is the oblique guide groove that angle intervals ground is arranged with this central axis respectively;

A plurality of jaws are mounted slidably respectively among aforementioned guide groove; Has a denture respectively on these a plurality of jaws;

One change, it can be installed on the aforementioned body rotatably around aforesaid central axis, have on the inner ring surface of this change can with the intermeshing internal thread of the denture of jaw;

One overcoat, it can be arranged on this body rotatably around aforementioned central axis, and with this change can't counterrotating mode combining, to drive this ring rotation; And,

One location device is arranged on this body, can fix this rotating screw cap it can't be rotated, and these some jaws are located in the certain limit.

And this overcoat can axially relatively move with respect to this change, and this positioner comprises: one is fixedly arranged at first setting element on this body; One second setting element, it can be arranged on this first setting element along the direction of aforementioned central axis slidingly back and forth, and combine regularly with this overcoat, also can axially contact simultaneously with this first setting element, and be respectively equipped with one on the surface that is bonded with each other of this first and second setting element can intermeshing linking part; And an elastic element, it is located on this body, in order to axially to promote this second setting element, itself and this first setting element is bonded with each other, and the aforementioned convergence part branch of this first and second setting element is engaged togather mutually.

And this body has a stopper section, and the surface that this stopper section is positioned at this rotating screw cap rear position by this body stretches out and constitutes; The such rotation nut can be resisted against the place ahead of this stopper section backward.

And this rotating screw cap further comprises:

One back of the body ring is arranged at the rear of aforementioned change, and can be resisted against the place ahead of the stopper section of aforementioned body backward; And a plurality of balls, be arranged between the composition surface of this change and this back of the body ring.

And this rotating screw cap further comprises: an interface components, use so that the change of this rotating screw cap and this back of the body encircle can counterrotating mode combining.

The invention allows for a kind of hammer, it is characterized in that, comprising:

One chuck body can be installed on this rotating shaft along the central axis of a rotating shaft of aforesaid instrument, and to be provided with a plurality of be that the center is an oblique guide groove that angle intervals ground is arranged and a stopper section with this central axis;

A plurality of jaws are mounted slidably respectively among aforementioned guide groove, and this jaw has a denture respectively;

One rotating screw cap has a change, and in the bearing mode and can be installed in the place ahead of aforesaid stopper section around aforesaid central axis rotatably;

And, have on the inner ring surface of this change can with the intermeshing internal thread of the denture of this jaw;

One location device comprises: one first setting element, and it is fixedly arranged on this body and is resisted against the front end of this rotating screw cap, and has an outward extending location division; And one second setting element, it can axially move back and forth and rotatably be sheathed on this body in the location division of this first setting element and the position between this rotating screw cap, and can be resisted against on this location division forward; An and elastic element, it is arranged at this second setting element rear, can apply forward a thrust and give this second setting element, this second setting element is resisted against forward on the location division of this first setting element, has a linking part that can be connected mutually respectively on the contact-making surface of this second setting element and this location division; And

One overcoat, itself and this second setting element combines regularly, and with the change of this rotating screw cap can't rotating relatively, but the mode that can move back and forth to axial combines.

And this rotating screw cap further comprises:

One back of the body ring, it is arranged at the rear of aforementioned change, and is resisted against the place ahead of aforementioned stopper section;

A plurality of balls are arranged between the rear and this back of the body ring of aforementioned change.

And, in described hammer, further comprise:

One flank, it reach out to be located at the back segment part of this change lateral border; One interface components, it is located at outside this back of the body ring and has one and extends the convergence part that coats this flank of fastening, and makes this back of the body ring and this change can counterrotating mode combining.

And, can be provided with one on the rear of this change and the surface that this ball contacts and be the center and can hold this ball in the ring-type ball orbit that wherein rolls with this central axis.

The hammer that the utility model proposes is simple in structure, and is easy to use.

Below in conjunction with accompanying drawing the utility model is described in detail.

Fig. 1 is a three-dimensional exploded view of the present utility model.

Fig. 2 is a cutaway view of the present utility model, in order to disclose the internal structure of chuck.

Fig. 3 is the longitudinal sectional view of the rotating screw cap in the utility model, in order to disclose its internal structure.

Fig. 4 is the stereogram of the keeper in the utility model.

Fig. 5 is a cutaway view, in order to the rotating screw cap in the utility model and the fit system of preceding overcoat to be shown.

Fig. 6 is the profile of the preceding overcoat in the utility model.

Fig. 7 is a profile, the hammer that the utility model proposes in order to announcement when screwing or loosen jaw, the position of its internals relation.

Fig. 8 is a profile, and the hammer that the utility model proposes in order to announcement utilizes positioner jaw to be positioned under the state of a specific stretching degree, the position of its internals relation.

Fig. 9 is a stereogram, the embodiment that the hammer that the utility model proposes in order to announcement cooperates a special tool(s) to use together.

Figure 10 is a profile, in order to a kind of practical cross sectional shape of the pad that discloses special tool(s) shown in Figure 9.

Figure 11 is a profile, in order to the practical cross sectional shape of the another kind of pad that discloses special tool(s) shown in Figure 9.

See also shown in Figure 1ly, the hammer that the utility model proposes roughly comprises: a body 10, a plurality of jaws of being located in the body 10 20, rotatably are sheathed on preceding overcoat 30 on the body 10, in order to the rotating screw cap 40, that drives these a plurality of jaws 20 fixing a back sleeve 50 and a location device 60.This chuck can be installed on the electronic or air tool driving shaft, clamps pad by overcoat 30 before rotating to drive jaw 20, so that workpiece is processed.It can be positioned at a certain ad-hoc location with aforementioned jaw by this positioner 60 simultaneously, is beneficial to promptly special tool(s) is installed on this chuck.

As shown in Figures 1 and 2, this body 10 is generally cylindrical shape, has a leading portion part 11 and a back segment part 12.Leading portion part 11 central authorities of this body 10 are formed with an axial hole 14, and this axial hole 14 has an aperture that is slightly larger than the diameter of these chuck 10 employed maximum pads approximately, so that the various tool handle all can be placed in it.Back segment part 12 central authorities of this body 10 form endoporus 15, and this endoporus 15 can cooperatively interact (end shows among the figure) with electronic or air tool rotating shaft, and are installed in this body on this rotating shaft and can rotate thereupon.This body 10 has a central axis 1, and is arranged at after the aforementioned rotating shaft, and 1 central axis with aforesaid rotating shaft of this central axis overlaps.

This axial hole 14 all is positioned on the aforementioned central axis 1 and mutually with this endoporus 15 and connects.Have an outward extending stopper section 16 between the leading portion part 11 of this body 10 and the back segment part 12 so that can sheathed aforesaid rotating screw cap 40 between this leading portion part 11 and the stopper section 16 etc. member (repeating after the appearance).

Among this body 10, have a plurality ofly in order to installing the oblique guide groove 17 of aforementioned jaw 20,, so on this body 10, only be provided with three aforesaid oblique guide grooves 17 among this embodiment because the general purpose tool chuck uses three jaws mostly.Each oblique guide groove 17 is center and the equal angles compartment of terrain is arranged on this body 10 with aforesaid central axis 1, and its lateral wall by this body 10 back segments part extends through among the madial wall of axial hole 14 of these body 10 leading portion parts 11 obliquely, therefore can ccontaining aforementioned each jaw 20, make each jaw 20 among this oblique guide groove 17 during, mutually polymerization and the sandwich serface 21 of each jaw 20 front end is met on the aforesaid central axis 1 to front slide; And slide backward when it, then can be separated from each other.

In addition, some penetrates out the outer surface of this body 10 the rough center section part branch of these some oblique guide grooves 17, and these a plurality of jaws 20 can be cooperatively interacted (repeating after the appearance) with aforesaid rotating screw cap 40, and is driven along should a plurality of oblique guide grooves 17 slips.

The leading portion of these a plurality of jaws 20 has a jaw face 21 respectively, and can cooperatively interact and a pad (for example bit sub, or bottle opener handle) is clamped and fastened on the aforesaid central axis 1.In addition, each jaw 20 has a denture 22 towards a side of the lateral surface of this body 10, in the time of among respectively this jaw 20 is placed in this oblique guide groove 17, each jaw has the outside that part that the side of aforementioned denture 22 penetrated the appearance of this body 10 owing to aforementioned oblique guide groove 17 is exposed to this body 10.

As shown in Figure 1 to Figure 3, comprise mainly in the such rotation nut 40 that a change 41, a back of the body encircle 42, reach some balls 43 that are arranged between this change 41 and the back of the body ring 42.As shown in Figure 2, this back of the body ring 42 is sheathed on this body 10, and abuts against in the place ahead of aforementioned stopper section 16, and this change 41 then is installed on the anterior position of this stopper section 16 in the mode of bearing with this ball 43 by this back of the body ring 42.

This change 41 can be around 1 rotation of aforesaid central axis, and has internal thread 47 in its inner ring surface, and can with the denture 22 of aforementioned each jaw 20 in expose these body 10 outer surfaces part be meshing with each other.The external screw thread that can cooperatively interact with the internal thread 47 of aforesaid change 41 inner ring surfaces that is shaped as of the denture 22 of this jaw 20 is cut apart the back rest parts with circumferencial direction, therefore this denture 22 can mesh with the internal thread 47 on these change 41 inner ring surfaces, and when making this change 41 rotations, can drive jaw 20 along aforementioned oblique guide groove 17 linear slide.

As shown in Figure 3, among this rotating screw cap 40, the rear end of these change 41 lateral walls is a flank 44 that outwards protrudes, the outside of this back of the body ring 42 then is coated with an interface components 45, with so that this change 41 encircles 42 can counterrotating mode combining with this back of the body, the lateral border of this interface components 45 extends one forward and is coated on the lateral wall of this change 41 and is fastened on convergence part 46 on this flank 44, and therefore the holding section 48 that is sticked in the back of this back of the body ring 42 that extends internally out, its outer rim rear end makes this change 41, back of the body ring 42, and ball 43 is combined into as a whole assembly.

As Fig. 2 and shown in Figure 6, should before the front part of overcoat 30 have a hole 31 of diameter that is slightly larger than the leading portion part 11 of this body 10, and the internal diameter of its back segment part is greater than the diameter of aforementioned body 10, jaw 20 and rotating screw cap 40, thereby these members can be coated on wherein, and can engrave decorative pattern on its outer surface, gripping rotation in order to the operator should preceding overcoat 30.The internal face of overcoat 30 comprises an inner ring surface 32 before being somebody's turn to do, and this inner ring surface 32 can closely be sleeved on one second setting element 64 of positioner 60.

In addition, as Fig. 1, Fig. 2 and shown in Figure 5, the madial wall of overcoat 30 is provided with a plurality of protruding longitudinally keys 33 before being somebody's turn to do, and the lateral wall of the leading portion of the change 41 of this rotating screw cap part is provided with the keyway 411 of a plurality of openings longitudinally towards the place ahead, this keyway 411 can engage mutually with this protruding key 33, and the two can slide relatively along the direction of this central axis 1, therefore makes this change 41 also can relatively be slided vertically between overcoat 30 and this change 41 before being somebody's turn to do simultaneously by these preceding overcoat 30 driven rotary.

When the operator grips this preceding overcoat 30 when the locking direction is rotated, can drive these change 41 rotations and drive these some jaws 20 and extend forward and draw close mutually, and aforesaid pad can be clamped.And when 30 courts of overcoat before this loosened the direction rotation, 41 of this changes can drive jaw 20 and retreat, and loosen the pad of its clamping.

As Fig. 1, Fig. 2 and shown in Figure 4, first setting element 61 that positioner 60 is had is a column type sleeve, and can be to closely cooperate or alternate manner is fixedly arranged on the leading portion part 11 of this body 10, this first setting element 61 has an extension 62 that extends back and contact with this rotating screw cap 40, and one is located at these extension 62 front ends and outward extending location division 63.

Positioner 60 also comprises second setting element 64, it is a ring bodies, and can be sheathed on the outer of this extension 62 vertically slidably and place, and make its leading portion part 11 that is located in this body 10 on the position between this rotating screw cap 40 and this location division 63.

Positioner also comprises an elastic element 65, it is arranged between this rotating screw cap 40 and this second setting element 64, and can apply the back side that a pressure is given this second setting element 64, and force this second setting element 64 to keep and the contacting of the location division 63 of this first setting element 61.

As Fig. 2, Fig. 4, Fig. 5 and shown in Figure 6, this second setting element 64 can be sleeved among the inner ring surface 32 of this preceding overcoat 30 regularly, and delineation has densely covered vertical indentation 641 on the outer surface of this second setting element 64, and makes and should combine regularly with this second setting element 64 by preceding overcoat 30.Therefore, this preceding overcoat 30 just can be by this second setting element 64 with can be in a specific stroke range slidingly back and forth mode be set on the extension 62 of this positioner 60.

As Fig. 2 and shown in Figure 4, be respectively arranged with the linking

part

66,67 that can mesh relatively on the location division 63 of this first setting element 61 and the contact-making surface of this second setting element 64, when this second setting element 64 is promoted by this elastic element 65 and when pressing on this location division 63, this linking

part

66,67 just is meshing with each other, can't rotate relatively between this second setting element 64 and this first setting element 61 and make, therefore make the change 41 of this preceding overcoat 30 and this rotating screw cap 40 be fixed jointly and can't rotate.

As shown in Figure 7, hammer of the present utility model before rotation is aforementioned overcoat 30 when driving 20 clampings of aforementioned jaw or loosening the aforementioned tools handle, the operator must be earlier with hand should preceding overcoat 30 to pusher, so that this first and

second setting element

61,64 is separated, so, should before overcoat 30 and this change 41 just can the person of being operated rotate, and then drive these some jaws 20 and clamp the action of loosening pad.

As shown in Figure 8, after the operator loosens this preceding overcoat 30, the elastic element 65 of this positioner 60 just can promote this second setting element 64 is meshing with each other itself and this first setting element 61, so just can with should before overcoat 30 and change 41 fixing and can't rotate, make that therefore these some jaws 20 are fixed in jointly on the certain location and can't move.

By the effect of this positioner 60, after the operator can be opened to the jaw 20 of this hammer one specific stretching degree, utilize this positioner 60 to be fixed on this stretching degree by some jaws 20.And when making this chuck by aforesaid electric tool driven rotary, jaw 20 still can not move.

The utility model is provided with the purpose of this positioner 60, is to make this hammer when using some special tool(s)s (for example bottle opener, tap, stropping bevel), can promptly change these instruments.As shown in Figure 9, this hammer can be used with a special tool(s) 70, this special tool(s) 70 has a pad 71, this pad 71 has the cross section that can be engaged mutually by aforementioned three jaws 20 and can't counterrotating special geometry, hexagon for example shown in Figure 10, and croze shape cross section shown in Figure 11.And this hammer is when using, the operator can be opened to aforementioned jaw 20 can engage this pad 71, it can't be rotated, simultaneously can allow this pad 71 directly to insert, extract out the stretching degree among this jaw 20, the operator can promptly directly install aforesaid various special tool(s)s on this hammer then, and needn't screw and loosen aforesaid jaw 20 and just can change this special tool(s) 70.

The utility model proposes hammer on using, the special tool(s) 70 of the pad with aforementioned special geometry 71 of number Zhi Butong of can arranging in pairs or groups is sold with complete collocation mode, when the operator uses the electric tool work that is equiped with the hammer that the utility model proposes, if run under the situation of the use occasion that must in the short time, change multiple different special tool(s), just can directly utilize the aforementioned special tool(s) of this hammer clamping, do not change special tool heads and will chuck on the rotating shaft of this electric tool, do not pull down, and can reach the effect of the fast changeable special tool(s) identical with the special hammer of this kind, therefore its use is upward more convenient, can save the working time significantly simultaneously.

Claims

1, a kind of hammer is characterized in that, comprising:

2, hammer as claimed in claim 1 is characterized in that, this overcoat can axially relatively move with respect to this change, and this positioner comprises: one is fixedly arranged at first setting element on this body; One second setting element, it can be arranged on this first setting element along the direction of aforementioned central axis slidingly back and forth, and combine regularly with this overcoat, also can axially contact simultaneously with this first setting element, and be respectively equipped with one on the surface that contains of this first and second setting element phase mutual connection can intermeshing linking part; And an elastic element, it is located on this body, in order to axially to promote this second setting element, itself and this first setting element is bonded with each other, and the aforementioned convergence part branch of this first and second setting element is engaged togather mutually.

3, hammer as claimed in claim 1 is characterized in that, this body has a stopper section, and the surface that this stopper section is positioned at this rotating screw cap rear position by this body stretches out and constitutes; The such rotation nut can be resisted against the place ahead of this stopper section backward.

4, hammer as claimed in claim 3 is characterized in that, this rotating screw cap further comprises:

5, hammer as claimed in claim 4 is characterized in that, this rotating screw cap further comprises: an interface components, use so that the change of this rotating screw cap and this back of the body encircle can counterrotating mode combining.

6, a kind of hammer is characterized in that, comprising:

Have on the inner ring surface of this change can with the intermeshing internal thread of the denture of this jaw;

7, hammer as claimed in claim 6 is characterized in that, this rotating screw cap further comprises:

8, hammer as claimed in claim 7 is characterized in that, further comprises:

9, hammer as claimed in claim 7 is characterized in that, the surface that the rear of this change contacts with this ball is provided with one and is the center and can holds this ball in the ring-type ball orbit that wherein rolls with this central axis.