CN2196525Y - Improved structure for single change-over ring of torsion-vibration electrical drillor - Google Patents

Abstract

The utility model relates to a torsional vibration electric drill, belonging to the field of mechanical processing. The utility model is characterized in that two ring walls are arranged in the switching ring, and the outer ring walls are also provided with slope sections; the mainshaft which is sheathed at the center of the ring is assembled with a switching block and a vibrating block; the grooves around the switching block are inlaid on the key of the inner ring walls of the switching ring, and the switching block is provided with a trapezium and can fall into the trapezoidal groove of a ratchet seat or climb up to disengage from the trapezoidal groove. When the switching block falls into trapezoidal groove, the main shaft and the vibration block are pressed in the ratchet seat because of the reaction force of the working substance; the vibration block can be in contact with the ratchet section (1323) of the ratchet seat, so the vibration can generated when the mainshaft (121) rotates.

Description

Improved structure for single change-over ring of torsion-vibration electrical drillor

The utility model belongs to a kind of torsional vibrations type electric drill of field of machining, refers in particular to a kind of can the ring as the torsion regulatory function and the vibrating function that switch electric drill with a switching.

Common used torsional vibrations type electric drill, it must use two functional mapping rings when switching torsion function and vibrating function.As shown in Figure 8, in the time of need not vibrating only needing to use the torsion function, need earlier changing ring (11) to be threaded to the torsion shelves, that is to say, make arrow (612) point to drill bit and indicate (111), and then regulate another changing ring (12) to required torsion, even also arrow (613) is aimed at one of them figure notation 1,2,3,4,5 or the arrow (614) on the changing ring, the different torque magnitude of its representative, when being threaded to drill bit symbol (614), representing it is maximum work torsion.And when using vibrating function, must earlier changing ring (11) be threaded to the vibration shelves.That is to say that make arrow (612) refer to go up another mark in changing ring (11), i.e. iron hammer mark (611), and changing ring (12) must be threaded to drill bit symbol (614) position so that maximum torsion to be provided.

Early stage electric drill does not have changing ring (11) and inner related accessory thereof, as shown in Figure 9.It only has the torsion regulatory function, and when rotation transformation ring (12), then packing ring (615), the spring (616) under it just can be oppressed in the interior set slope (117) of changing ring (12), and steel ball pad (617) and steel ball (618) etc. are used adjustment work torsion.And above-mentioned torsional vibrations type electric drill, it is can regulate more additional devices on the electric drill of torque magnitude one as can be known with its internal structure of its profile, mat rotation transformation ring (11), key (112), (113) set in it drive this pawl seat (114).The pawl seat bottom periphery is provided with slope (115), after fit with the inclined-plane of vibrating mass (119) bottom in this slope (115), pawl seat (114) is driven to rotate, because of inclined plane principle event vibrating mass (119) up moves, make vibrating mass (119) bottom no longer contact with the ratchet portion (116) of pawl seat (114), that is to say the ratchet portion (116) that has broken away from pawl seat, therefore main shaft (120) can not vibrated when rotated simultaneously.The defective of this function switching mode is: the one, and palpus is regulated two changing rings (11), (12) are comparatively bothersome; The 2nd, when regulating a changing ring and forgotten to regulate another changing ring, cause the operation error; The 3rd because will be on changing ring add ons, so the electric drill entire length is bigger, makes it the moment of reaction that rotary head produced and make the operability of going smoothly to electric drill relatively poor when operation.

The purpose of this utility model is to provide a kind of structure-improved that switches the single switching ring of torsional vibrations type electric drill that ring, reduction box, main shaft group and pawl seat form that consists predominantly of, and it can only reach the effect of switching torsion regulatory function and vibrating function with single switching ring.Thereby the deficiencies in the prior art have been solved.

The technical scheme that the utility model adopted is that it consists predominantly of switching ring, pawl seat, reduction box, main shaft group, motor, chuck, chuck cover and battery pack and forms.It is provided with a reduction box before motor shaft, utilize that the slope is intersegmental to be met compressing steel ball and then compressing internal gear B and reach torsion and regulate, and utilizes a vibrating mass to produce vibration with contacting of pawl seat ratchet part.The structure that produces this function is to establish inside and outside two ring walls in switching ring, an interior sheathed main shaft group, have a handoff block and a vibrating mass on the main shaft of main shaft group, around handoff block, be provided with groove, just be embedded in the set key of inwall that switches ring, also be provided with three trapezoidal projections on the handoff block, can fall into trapezoidal groove or climb from this groove and break away from trapezoidal groove, when falling into trapezoidal groove, main shaft moves down vibrating mass is contacted with the ratchet part of pawl seat, and climb time-out, no space moves down for main shaft in the handoff block, and then the permanent ratchet part that breaks away from of vibrating mass.The external annulus bottom of switching ring is provided with the slope section, it is to be set in outside the pawl seat that its below is sequentially provided with thrust plate, steel loop, spring, steel ball pad, and the steel ball of spaced set is respectively to place pawl seat each set hole, garden on every side, just between steel ball pad and internal gear B, and also be provided with several teats on the internal gear B.This structure-improved just can reach the effect of switching torsion regulatory function and vibrating function with single switching ring.

The utility model can be controlled vibration and work torsion respectively because switching is equipped with inside and outside ring wall, that is to say only to switch to encircle with one to possess the function of regulating torsion and vibration.The member of the member of control vibration and the work of adjusting torsion is arranged on around the main shaft, i.e. its configuration is to development radially and non axial development, thereby can shorten electric drill length.Because the reduction box that pawl seat is penetrated moulding by the plastic cement bag coats, therefore reduced the position of the ratchet part of pawl seat again at whole electric drill.

Fig. 1 is a stereo appearance figure of the present utility model.

Fig. 2 is a leading portion part three-dimensional exploded view of the present utility model.

Fig. 3 is a back segment part three-dimensional exploded view of the present utility model.

Fig. 4 is the three-dimensional exploded view of shell of the present utility model and battery pack.

Fig. 5 is the profile at switching ring of the present utility model, main shaft group, pawl seat and reduction box shell position.

Fig. 6 is in full state for handoff block of the present utility model (125), and main shaft (121) profile of the motor fore-end during pressed status not.Wherein vibrating mass (126) still keeps and ratchet part (1323) disengaged position.

Fig. 7 rises the profile of the motor fore-end of main shaft (121) can't press down the time for the utility model when handoff block (125) is in.Wherein vibrating mass (126) is permanent keeps and ratchet part (1323) disengaged position.

Fig. 8 is the stereogram of prior art torsional vibrations type electric drill.

Fig. 9 is the profile of motor fore-end of the torsional vibrations type electric drill of prior art.

Further specify preferred embodiment of the present utility model in conjunction with above-mentioned each accompanying drawing now.The utility model is mainly by chuck cover (1), chuck screw (2), chuck (3), switching ring (4), left shell (47), right casing (45), battery pack (50), vibrating mass (126), main shaft (121) and pawl seat accessories such as (132) constitute.In Fig. 1, switching ring (4) when rotation points to arrow (401) to switch ring when going up each numeral or drill bit mark (402), can regulate the work torque magnitude, at this moment drill bit is when the driller crop, and friction, and when switching ring (4) and be threaded to vibration shelves (403), its torsion be maximum, and chuck (3) is when rotating and do porpoise.

Except chuck cover (1), outside chuck screw (2) and the chuck (3), all the other elements are to be assembled in left shell (47) and the formed space of right casing (45) clamping, as Fig. 2 and shown in Figure 4.The top of battery pack (50) just is embedded in the space, bottom of left and right shell clamping formation and the left and right sides conducting element (501) of battery pack, each contact on two conducting strips (421) of terminal group shown in Figure 3 (42), (422), required energy so that electric drill work to be provided.Chuck cover (1) normally plastics is made, and electric drill can not cover at chuck (3) upward with the protection chuck by the time spent.Sleeve (301) on the rotary chuck (3) then can make each fixture block (302) step back and form a space between each fixture block, to clamp drill bit.Chuck screw (2) be after each fixture block (302) is retracted into fully backward again in chuck (3) screw lock go into the screw that main shaft (121) front end face is offered, make the chuck can be with main shaft (121) forward or reverse, unlikely getting loose.

Switch (39) is connected with a fin (43), as shown in Figure 3.During trigger (391) on depress switch (39), then passed through by the electric power that battery pack provided, switch transfers to motor (34), and motor shaft (341) provides power output of the present utility model.Be installed with a motor gear (33) on this motor shaft (341), motor (34) is to be fixed on the motor fixed plate (31), the front of motor fixed plate (31) is sequentially provided with three groups of planetary gearsets, use as a reduction box, it comprises internal gear A(29), change-speed gearing (28), planet tooth A(27), toothed disc pad (26), planetary plate A(25), planet tooth B(24), planetary plate B(23), planet tooth C(22), planetary plate C(21), C type clasp (20), packing ring (19) and internal gear B(18) etc. element.And the forward and backward of the changeable motor of transfer strip (619) (34) rotating shaft.Gear lever shown in Figure 3 (15), the two ends of its below guide rod of establishing (14) that connects are to penetrate in the hole of reduction box shell (133) both sides, and be stuck in the annular groove (281) of change-speed gearing (28), use and stir this change-speed gearing (28) and do forward and backward move and speed change.

Main shaft shown in Figure 2 (121) passes between packing ring (122), tower spring (123), pad (101), each steel ball (124) in regular turn, pad (102), handoff block (125), again vibrating mass (126) is press-fit on the main shaft (121), then constitutes main shaft group shown in Figure 5 (1210).In conjunction with Fig. 3 and Fig. 5, six steel balls (61) are to place pawl seat (132) hole, six gardens (62) on every side, again main shaft group (1210) is passed pawl seat (132) in regular turn, reduction box shell (133), axle bush (134), packing ring (16), fixing with C type clasp (17) again, pass the internal gear B(18 that places reduction box shell (133) again), be inserted in packing ring (19) again, again with C type clasp (20) fixed annulus B(18), and make this internal gear B(18) be fixed in the reduction box shell (133), and internal gear B itself still can rotate freely, and the end of last main shaft (121) is to be inserted in planetary plate C(21) in the axis hole offered of central authorities.

In conjunction with Fig. 2,3 and Fig. 5,6, in switching ring (4), be provided with two ring walls (405), (406), ring wall (406) is near switching ring central authorities, ring wall (405) is away from switching ring central authorities, ring wall (405) is provided with three slopes, on each slope and be divided into six sections, be wavy, just in time 1,2,3,4,5 sections of cooperating torque magnitude and acrotorque are one section.Because thrust plate (7) is disposed under the ring wall (405), doing at 3 with ring wall contacts, each contact point is on contour slope section, this switching ring (4) can be oppressed this thrust plate (7) when rotated, steel loop (9), spring (8), steel ball pad (10) and steel ball (61), because steel ball (61) is to be pressed in steel ball pad (10) and internal gear B(18) between, and the distributing position of steel ball (61) is just at internal gear B(18) go up between each teat, for example wherein a steel ball (61) will be positioned at teat (181), (182) between, switch in the process of ring (4) in rotation, when switching ring (4) when rotating to the limit, thrust plate (7) is on slope section (4051) with contacting of ring wall (405), therefore, ring (4) is switched in rotation more, steel ball (61) is pressed in steel ball pad (10) and internal gear B(18 more) between, make internal gear B(18) each teat, reach the compressing that (182) will be subjected to each steel ball (61) more as teat (181), thereby the rotation of internal gear B is more blocked, therefore, it is motionless that internal gear B also changes more, internal gear B(18) changes motionless, then main shaft (121) is tending towards rotating more, again because of internal gear B(18) be provided with inner circular tooth, and three planet tooth C(22) be engaged in this inner circular tooth, these three planet tooth C(22) medium pore is fixedly arranged on planetary plate C(21 again) on set three tips in back, the torque that is come by motor shaft (341) will make this planetary plate B(23 indirectly) rotate and then drive three planet tooth C(22) rotation, if internal gear B is pressed and does not rotate, three planet tooth C(22 then) except that rotation, also will revolve round the sun, and then make planetary plate C(21) rotate, and then will drive be placed on planetary plate C(21) main shaft (121).Otherwise, if switching ring (4) is threaded to the most loose, make thrust plate (7) and three contact points that switch ring highly in slope section (4052), then steel ball pad (10) and internal gear B(18) between each teat (181), (182) etc., or say internal gear B(18) be not subjected to blocking between the steel ball more, thereby main shaft (121) will be tending towards stopping more.

On another ring wall (406) that switches ring (4), equidistantly be provided with three keys, as seeing two keys (4061), (4062) wherein among Fig. 5, be rectangular bulk.On the other hand, equidistantly be provided with three grooves on the handoff block (125), Fig. 5 can see one of them groove (1251), after the utility model assembling is that these three keys are embedded in these three grooves, therefore rotate this switching ring (4) with hand, to directly drive handoff block (125) and rotate, and make peripheral set three the trapezoidal projections (1252) of handoff block (125) also along with rotation.On the other hand, the nearly upper end of pawl seat (132) inwall offers three so-called trapezoidal grooves identical shaped with trapezoidal projection, two trapezoidal grooves (1322) as shown in Figure 5, (1321), the result that handoff block (125) is rotated makes trapezoidal projection can be embedded in the trapezoidal groove, also can leave trapezoidal groove.Generally speaking, during handoff block (125) rotation trapezoidal projection (1252) is moved toward Fig. 5 left, trapezoidal projection (1252) falls into trapezoidal groove (1322) at last, if trapezoidal projection continues towards equidirectional rotation again, then trapezoidal projection (1252) will be climbed on the ladder (620) by having climbed in this trapezoidal groove (1322).In fact, because handoff block (125) is provided with three trapezoidal projections, and have three trapezoidal grooves on the pawl seat (132), the position of trapezoidal groove position and trapezoidal projection in correspondence with each other, therefore the above-mentioned action that falls or climbed, three trapezoidal projections are synchronization actions, and effect simultaneously makes handoff block (125) to descend or to rise.

Ring (4) is switched in rotation, make piece change piece (125) and be in full state, main shaft shown in Fig. 6 (121) is in pressed status not, so vibrating mass (126) still keeps the state with ratchet part (1323) disengaging, when working when the bit heading working substance, working substance can apply a reaction force to drill bit and main shaft (121), make main shaft (121) move down, and then the vibrating mass (126) that is press-fit in main shaft (121) with main shaft (121) toward moving down, and then this vibrating mass (126) can contact ratchet part (1323), so main shaft (121) in rotation, is done with contacting of ratchet part (1323) because of vibrating mass (126) on the one hand on the other hand, following vibration.

Otherwise, as shown in Figure 7, ring (4) is switched in rotation makes handoff block (125) in propradation, at this moment, even if in working order, this main shaft (121) still can't move down, so state that permanent maintenance of vibrating mass (126) and ratchet part (1323) break away from, so main shaft (121) when rotated, and vibrating mass (126) and ratchet part (1323) can not contact, and main shaft (121) will can not vibrate.

The utility model can reach the effect of switching torsion regulatory function and vibrating function with single switching ring, and pawl seat (132) is penetrated integrated reduction box shell (132) coating, the position of ratchet portion in whole electric drill that has reduced pawl seat by plastic cement.

Claims (2)

1, a kind of mainly by switching ring (4), pawl seat (132), motor (34), reduction box, chuck cover (1), the structure-improved of the single switching ring of torsional vibrations type electric drill that chuck (3) and main shaft group (1210) are formed, be at the preceding reduction box that is provided with of a motor shaft (341), utilize that the slope is intersegmental to be met compressing steel ball (61) and then compressing internal gear B (18) and reach torsion and regulate, and utilize a vibrating mass (126) to produce vibration with contacting of pawl seat ratchet part (1323), in it is characterized in that being provided with in this switching ring (4), outer two ring walls (406), (405), an interior sheathed main shaft group (1210), have a handoff block (125) and vibrating mass (126) on the main shaft (121) of this main shaft group (1210), this handoff block (125) is provided with groove (1251) on every side and just is embedded in the set key (4061) of inwall that switches ring (4), (4062) etc. above, handoff block (125) is provided with three trapezoidal projections (1252), can fall into trapezoidal groove (1321), (1322) or climbed and break away from trapezoidal groove (1321), (1322), falling into trapezoidal groove (1321), (1322) time, main shaft (121) moves down vibrating mass (126) is contacted with the ratchet part (1323) of pawl seat (132), and climb time-out, no space moves down for main shaft (121) in the handoff block (125), and then the permanent ratchet part (1323) that breaks away from of vibrating mass (126), external annulus (405) end of switching ring (4), be provided with the slope section, the thrust plate (7) that its below is sequentially provided with, steel loop (9), spring (8), steel ball pad (10) all is to be set in outside the pawl seat (132), and equidistant steel ball (61) is each hole, garden (62) that respectively places pawl seat (132) set on every side, just be positioned between steel ball pad (10) and the internal gear B (18), and internal gear B (18) is provided with some teats (181), (182) etc.

2,, it is characterized in that said reduction box shell (133) is to coat this pawl seat (132) and be made into integration with plastic cement according to the single switching ring of the said torsional vibrations type of claim 1 electric drill structure-improved.

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