CN2420103Y

CN2420103Y - Electric hand tool regulating head capable of optional locking

Info

Publication number: CN2420103Y
Application number: CN 00208964
Authority: CN
Inventors: 蔡逢春
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-04-07
Filing date: 2000-04-07
Publication date: 2001-02-21
Anticipated expiration: 2010-04-07

Abstract

The utility model relates to an electric hand tool regulating head which can be optionally locked, which is proposed for providing a maneuver hand tool part which is convenient to switch and can reduce damage to machine parts caused by switching. The utility model comprises a gear set, an inner gear, a torsional cover, a spaced seat, a locking switching ring, a tension spring, a plurality of supporting posts, a spring, a plurality of braking rods and a reverse stop structure, wherein the inner circumference, the top end and the outer circumference of the inner gear are respectively provided with an inner tooth surface, convex teeth and an outer tooth groove; the inner circumference and the bottom end of the torsional cover are provided with internal threads and a dial button; the spaced seat is uniformly provided with a plurality of step-shaped holes; the inner and outer ring faces of the locking switching ring in the shape of a ring are provided with a plurality of inclined pull holes and convex blocks. The tension spring is arranged between the locking switching ring and the spaced seat.

Description

The electronic hand-held tool that can arbitrarily lock is adjusted head

The utility model belongs to motor-driven hand-held tool parts, and particularly a kind of electronic hand-held tool that can arbitrarily lock is adjusted head.

On the torsion adjustment head of electronic hand-held tool locking mechanism is set usually, can exports fully through guaranteeing torsion.As shown in Figure 1, the electronic hand-held tool torsion adjustment head of commonly using is the rotation that utilizes torsion adjustment lid 2, place spring in it and steel ball etc. with compressing, use the pressure that changes spring, make steel ball close driving because of the relativeness of drag and spring pressure continues to do to push up or escape stops transmission in the structure of certain roof pressure face.So can solve the problem that produces destruction because of torsion is excessive.At torsion adjustment lid 2 by pine during to tight setting, by exterior visual, as with the torsion that sets be 1～10 grade with pine to tight class interval, torsion adjustment lid 2 delineates or is marked with 1～10 grade scale demonstration outside root edge 21, and after 10 grades, generally all be provided with lock class A, it act as the retraction space that no spring provides, and power is all exported.Generally all make spring be depressed into the limit in this keyed end in the 2 rotation drivings of torsion adjustment lid.Anyway, its position is to be positioned at after 10 grades.Yet according to general behaviour in service, the 1st, 2 grade is the most normal use with lock class.But the adjustment of the adjustment head of commonly using lid 2, if will use lock class A, then must be from the 1st, 2,3,4 ... just can switch to lock class A until afterbody.So, not only extremely effort, inconvenience in operation, and also if things go on like this, parts also damage easily.

The purpose of this utility model provides a kind of electronic hand-held tool adjustment head that can arbitrarily lock that switching causes parts to damage of being convenient to switch, reduce.

The utility model comprise with motor power output for planetary gear train, the internal gear with the gear train engagement, torsion lid, a seat, locking are switched ring, extension spring, counted fore-set, spring, count brake bar and non-return rotation structure; Internal gear is provided with the inner toothed surface with the gear train engagement, and its top and periphery are all established the lobe and the outer teeth groove of conflicting with the number fore-set; Torsion is covered with the internal thread of adjusting the spring press power, and its bottom is convexly equipped with toggle; Between the seat all establish the number ccontaining brake bars the scalariform hole; Locking is switched ring in the form of a ring, and its inner ring surface is provided with several cant holes, and its outer ring surface is convexly equipped with torsion lid bottom and pulls out the corresponding projection of button; Locking switching ring is gone up button and is provided with the extension spring that is about 270 ° of arc length; Between the other end of extension spring is buckled in the seat on.

Wherein:

Brake bar is rod-short, and its upper end and lower end all are spherical with semicircle, and forms prominent ring between upper and lower end, is arranged with spring in prominent ring below.

Because the utility model comprises gear train, internal gear, torsion lid, a seat, locking and switches ring, extension spring, number fore-set, spring, number brake bar and non-return rotation structure; Internal gear is provided with the inner toothed surface with the gear train engagement, and its top and periphery are all established the lobe and the outer teeth groove of conflicting with the number fore-set; Torsion is covered with the internal thread of adjusting the spring press power, and its bottom is convexly equipped with toggle; Between the seat all establish the number ccontaining brake bars the scalariform hole; Locking is switched ring in the form of a ring, and its inner ring surface is provided with several cant holes, and its outer ring surface is convexly equipped with and the corresponding projection of torsion lid bottom toggle; Locking switching ring is gone up button and is provided with the extension spring that is about 270 ° of arc length; Between the other end of extension spring is buckled in the seat on.When adjusting outputting torsion, switch environmental protection when locking and be held in the normality position, cant hole aligns the brake bar upper end on it, brake bar is under the elastic force effect that is set in its upper spring, stretching into locking with its upper end switches in the cant hole of ring, and the lower end still remain between in the scalariform hole of seat, internal gear is locked and be the state of can adjusting.When desire locking the utility model can be exported fully with assurance torsion, oppositely turn torsion lid rotates to drive locking switching ring, cant hole presses down the brake bar upper end on it, and the compression spring, the intercalation of brake bar lower end is gone in the outer teeth groove of internal gear, internal gear is locked state, can lock internal gear in the arbitrfary point, not only be convenient to switch, and reduce to switch and cause parts to damage, thereby reach the purpose of this utility model.

Fig. 1, electronic hand-held tool adjustment header structure diagrammatic elevation view for commonly using.

Fig. 2, be the utility model structural representation cutaway view.

Fig. 3, be the utility model decomposition texture schematic isometric.

Fig. 4, be the utility model action schematic cross section (normally adjusting state).

Fig. 5, be the utility model action schematic cross section (lock-out state).

Fig. 6, be the utility model action signal partial sectional view (normally adjusting state).

Fig. 7, be the utility model action signal partial sectional view (lock-out state).

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

As Fig. 2, shown in Figure 3, the utility model comprises switching ring 6, extension spring 60, number fore-set 70, spring 4, counting brake bar 9 and non-return rotation structure for planetary gear train 5, the internal gear 8 with gear train 5 engagements, torsion lid 2, a seat 7, locking electric machine main shaft 1 power output.

Internal gear 8 is a cylindrical body, and its inwall is provided with the inner toothed surface 81 with gear train 5 engagements, all establishes the lobe 82 of conflicting with some fore-sets 70 in internal gear 8 tops, and its top periphery is all established outer teeth groove 83.

Torsion lid 2 is provided with the internal thread 20 that drives screw ring 3, and its bottom is convexly equipped with toggle 22.

Between seat 7 all establish several scalariforms hole 71.

Locking is switched ring 6 in the form of a ring, and its inner ring surface is provided with several cant holes 61, and its outer ring surface is convexly equipped with torsion and covers 2 bottom toggles, 22 corresponding projections 62.

Extension spring 60 is about 270 ° of arc length.

Brake bar 9 is rod-short, and its upper end 91 and lower end 93 all are spherical with semicircle, and forms prominent ring 92 between upper and

lower end

91,93, is arranged with spring 90 in prominent ring 92 belows.

Non-return rotation structure comprises rotatable cover 84, swivel 85, holder 86, pad 87, roller 88, bearing 89 and fastener 80 etc.

Fore-set 70 is to switch ring 6 compactings by locking, internal thread 22 by torsion lid 2 drives screw ring 3, driving screw ring 3 upper and lower moving act on locking with change spring 4 through spring shim 40 and switch the press power that encircles on 6, and put on the fore-set 70 through locking switching ring 6 press powers with spring 4.When axial torsion that main shaft bore during greater than the press power of spring 4, internal gear 8 top lobes 82 promptly can produce safe escape effect with fore-set 70 bottoms.

Between brake bar 9 is slidingly installed in seat 7 the scalariform hole 71, its upper and

lower end

91,93 can be respectively to switch the outer teeth groove 83 of cant hole 61 on the ring 6 and internal gear 8 chimeric with locking.

An end that is about the extension spring 60 of 270 ° of arc length fastens locking and switches ring 6, between its other end then is buckled on the seat 7.

As shown in Figure 4, extension spring 60 is relaxed state.As shown in Figure 5,, switch projection 62 corresponding toggles 22 on the ring 6, switch ring 6 button fastening positions locking by its bottom and locking when rotary torsion lid 2.

As Fig. 6, shown in Figure 7, ring 6 turns displacement is switched in locking, by cant hole 61 on it brake bar is pushed away for 9 times, makes it fasten the outer teeth groove 83 of internal gear 8 peripheries.

As Fig. 4, shown in Figure 6, when locking switching ring 6 remains on the normality position, cant hole 61 aligns brake bar 9 upper ends 91 on it, brake bar 9 is under the elastic force effect that is set in its upper spring 90, stretching into locking with its upper end switches in the cant hole 61 of ring 6, and lower end 93 still remain between in seat 7 the scalariform hole 71, internal gear 8 is locked and be the state of can adjusting.

As Fig. 5, shown in Figure 7, when ring 6 turns were switched in locking, cant hole 61 pressed down brake bar 9 upper ends 91 on it, and compression spring 90, brake bar 9 lower ends, 93 intercalations are gone in the outer teeth groove 83 of internal gear 8, and internal gear 8 is locked state, and its power is exported fully and is not subjected to the influence of anti-torsion.

The utility model mainly provides a kind of reverse turn torsion lid 2 that utilizes, switch ring 6 can stir locking, making locking switch ring 6 set some cants holes 61, to compress brake bar 9 descending, go into intercalation in the outer teeth groove 83 of internal gear 8, internal gear 8 can't be rotated, promptly be in the state in the adjustable space of torsionless, and then the power of main shaft can be exported fully, and make the position is set can be restricted of its keyed end.

In sum, the utility model not only is that the torsion of rotatable and multiple spot fastening is adjusted head, adjust outputting torsion with the rotation of adjusting head by torsion, and can only to do local oppositely turn be the lockable internal gear, adjusts the space with locking torsion, realizes that torsion exports fully, so can be arranged on torsion class interval side commonly used, the torsion class interval that the lock class vicinity is used always, be convenient to switch and use, and thereby can reduce the problem that causes parts to damage because of switching.

Claims

1, a kind of electronic hand-held tool that can arbitrarily lock is adjusted head, it comprise with motor power output for planetary gear train, the internal gear with the gear train engagement, torsion lid, a seat, locking are switched ring, extension spring, counted fore-set, spring, count brake bar and non-return rotation structure; Internal gear is provided with the inner toothed surface with the gear train engagement, and its top and periphery are all established the lobe and the outer teeth groove of conflicting with the number fore-set; Torsion is covered with the internal thread of adjusting the spring press power, and its bottom is convexly equipped with toggle; Between the seat all establish the number ccontaining brake bars the scalariform hole; It is characterized in that described locking switching ring in the form of a ring, its inner ring surface is provided with several cant holes, and its outer ring surface is convexly equipped with torsion lid bottom and pulls out the corresponding projection of button; Locking switching ring is gone up button and is provided with the extension spring that is about 270 ° of arc length; Between the other end of extension spring is buckled in the seat on.

2, the electronic hand-held tool that can arbitrarily lock according to claim 1 is adjusted head, it is characterized in that described brake bar is rod-short, and its upper end and lower end all are spherical with semicircle, and forms prominent ring between upper and lower end, is arranged with spring in prominent ring below.