CN2455441Y

CN2455441Y - Safety device for replacing sand wheel of hand abrader

Info

Publication number: CN2455441Y
Application number: CN 00266444
Authority: CN
Inventors: 纪文耀
Original assignee: CHEWANG ELECTRONIC Co Ltd
Current assignee: CHEWANG ELECTRONIC Co Ltd
Priority date: 2000-12-27
Filing date: 2000-12-27
Publication date: 2001-10-24
Anticipated expiration: 2010-12-27

Abstract

The utility model discloses a safety device for replacing grinding wheels of a hand-held grinder, which is arranged on a shell of a hand-held grinder and positioned between a sheathing connection end of a driving grinding wheel and a starting pushing button. In the utility model, a turn button is positioned above a bevel gear wheel on the sheathing connection end of the driving grinding wheel, the surface the turn button protrudes out from the shell of the grinder, and a brake pin is vertically extended out from the back end of the button surface; near to a wheel hub of the bevel gear wheel, a startup restricting connecting-rod is transversely extended out from a wall surface eccentrically around a safety button, and near to a startup pushing button, the rod body of the startup restricting connecting-rod and the neck part of the brake pin are respectively sheathed with a spring which respectively elastically butts the corresponding positions of the inner wall of the shell of the grinder. The utility model is convenient to removing and replacing grinding wheels, and simultaneously has the safety effect of preventing the grinder from being started by a contact by mistake.

Description

The emery wheel of hand-held abrasive machine changes safeties

The utility model is that a kind of emery wheel of hand-held abrasive machine changes safeties, particularly a kind ofly can produce locking emery wheel socket end simultaneously, and block starts the safeties that push button moves, be that the existing hand-held unexistent safety of abrasive machine is guaranteed device, reach and make things convenient for emery wheel to change, and have the maloperation of preventing and the safe effect that starts.

Because being convenient to the operator, removes by small and exquisite hand-held abrasive machine at the burr that carry out goods when participating in the cintest, or engraving multiple meticulous dress work such as repair a die, it is a kind of electronic hand-held tool that very generally uses, yet owing to grind the difference of angle, grinding scope, but the grinding wheel of its adapted also has multiple pattern can add grinding long afterwards for selecting for use, the wearing and tearing of grinding wheel shape, make abrasive machine can change different grinding wheels, could successfully carry out grinding operation.

Yet, present common hand-held abrasive machine, safeties without any safety with grinding wheel and the locking of startup push button, when emery wheel is changed, all the time must be to pin the button of clamping grinding wheel on the other hand, another hand tool using wrench loosen nut not only changes inconvenience, the startup push button of false touch abrasive machine more likely, cause the incised wound human body danger,

The emery wheel that the purpose of this utility model provides a kind of hand-held abrasive machine changes safeties, and it has the safe effect that makes things convenient for emery wheel to change to prevent simultaneously false touch from starting.

The purpose of this utility model is achieved in that a kind of emery wheel of hand-held abrasive machine changes safeties, comprise a knob, one banking pin, one restriction starts connecting rod, rod spring and banking pin spring, be located on the hand-held emery wheel casing, between transmission emery wheel socket end and startup push button, wherein knob is positioned at the bevel gear top of transmission emery wheel socket end, and the button face protrudes the emery wheel casing, button face back of the body end vertically stretches out this banking pin, close on this bevel gear wheel hub, peripheral wall surface in stop button off-centre, cross out this restriction and start connecting rod: close on the startup push button, start the sheathed rod spring of connecting rod shank in restriction, the sheathed banking pin spring of banking pin neck: the butted emery wheel shell inwall correspondence position of difference.During push-jump thus stop button, affect banking pin pintle hook lock bevel gear wheel hub, affect restriction to start connecting rod simultaneously and prop up the startup push button, produce locking emery wheel socket end and block and start push button and move.

Plurality of positions is arranged with for banking pin pin end and inserts several draw-in grooves of locking on the described bevel gear wheel hub.

Form inclined thrust surface around the described stop button button face back of the body end.

The utility model is owing to set up safeties, it is pulled and insures when changeing emery wheel, needn't button by a vertical compression, and staff false touch push button causes the harm of improper running in the time of can preventing to change grinding wheel, increased the existing hand-held unexistent insurance security function of abrasive machine, it is convenient and safe that emery wheel is changed.

Detailed construction of the present utility model, application principle, effect and effect please refer to the explanation shown in the following adjoint and can obtain complete understanding.

Fig. 1 changes the abrasive machine overall perspective view that safeties are implemented for the emery wheel of the hand-held abrasive machine of the utility model.

Fig. 2 is the three-dimensional exploded view of Fig. 1.

Fig. 3 is not changeing the cut-away view of grinding wheel when directly using emery wheel for Fig. 1 structure.

Fig. 4 is the cut-away view of Fig. 1 structure when changing grinding wheel.

As shown in Figure 1, change the abrasive machine overall perspective view of safeties enforcement for the emery wheel of the hand-held abrasive machine of the utility model, and please be simultaneously with reference to the three-dimensional exploded view of Fig. 2, by these figure as can be known, the emery wheel of the hand-held abrasive machine of this kind of the present utility model changes safeties, be to be located at hand-held emery wheel casing, between transmission emery wheel socket end 53 and startup push button 60, mainly comprise: a knob 10, one banking pin 20, one restriction starts connecting rod 30, rod spring 40 and banking pin spring 50, wherein stop button 10 is positioned at bevel gear 51 tops of transmission emery wheel socket end 53, and the button face protrudes the emery wheel casing, offer the inserting hole 55 that button body sinking space 54 central authorities offer to snap in casing, around button face back of the body end, form inclined thrust surface again, and the appropriate location vertical direction overlaps this banking pin 20 on every side, pass the straight open-work 63 that the casing correspondence position is offered, the other end by these pin 20 these buttons 10 of overlap joint, close on the wheel hub of this bevel gear 51, the appropriate location, many places is arranged with the several draw-in grooves 58 that insert for banking pin 20 pin ends on these bevel gear 51 wheel hubs, 59, lock to provide this pin 20 to intert, in addition in the peripheral wall surface of stop button 10 off-centre, horizontal this restriction startup connecting rod 30 of stretching, pass the horizontal open-work 62 that the casing correspondence position is offered, bar 30 overlaps the other end of these button 10 peripheral wall surface thus, close on this startup push button 60, start the sheathed rod spring 40 of connecting rod 30 shafts in restriction again, and in the sheathed banking pin spring 50 of banking pin 20 necks, with the butted emery wheel shell inwall correspondence position of difference.

Do not change grinding wheel when directly using emery wheel, shown in the cut-away view of Fig. 3, allot stop button 10 rotation directions, make the button back of the body not push banking pin 20, banking pin 20 is bounced up by banking pin spring 50, withdraw from stopper to bevel gear 51, knob 10 surrounding walls are not also pushed restriction startup connecting rod 30 simultaneously, make this bar 30 moved back by rod spring 40 bullets, withdraw from the passing space that starts push button 60, can pull and move startup push button 60, push the pull bar 56 of these button 60 lower ends and connect power, make the gear-box 57 in the body drive bevel gear 51, the grinding wheel (not shown) of drive and bevel gear 51 sockets rotates, and carries out abrasion wheel grinding.

When shutdown is desired to change grinding wheel; shown in Fig. 4 cut-away view; rotation stop button 10; the button back of the body can be in the middle of rotation; push banking pin 20 compression second spring 50 that rebounds; snap in the arbitrary draw-in groove (58 or 59) on bevel gear 51 wheel hubs; produce locking emery wheel socket end, it can't be rotated, reach the effect of being convenient to change the grinding wheel (not shown); and knob 10 surrounding walls are also in the middle of 10 groups of commentaries on classics of knob simultaneously; push restriction and start connecting rod 30, these bar 30 extruding rod springs 40 are stretched out, prop up startup push button 60 and fill up the passing space; startup push button 60 can't be passed; can't connect power supply, and very end bevel gear 51 idle running, be convenient to grinding wheel and change by banking pin 20; and change in the grinding wheel process; although false touch starts push button 60, and the startup push button 60 that can't promote can not cause the emery wheel running yet, produces the human body harm under the improper running; and the situation of destruction motor and bevel gear 51, have the safe effect of insurance.

Claims

1, a kind of emery wheel of hand-held abrasive machine changes safeties, it is characterized in that: comprise a knob, one banking pin, one restriction starts connecting rod, rod spring and banking pin spring, be located on the hand-held emery wheel casing, between transmission emery wheel socket end and startup push button, wherein knob is positioned at the bevel gear top of transmission emery wheel socket end, and the button face protrudes the emery wheel casing, button face back of the body end vertically stretches out this banking pin, close on this bevel gear wheel hub, peripheral wall surface in stop button off-centre, cross out this restriction and start connecting rod, close on the startup push button, start the sheathed rod spring of connecting rod shank in restriction, the sheathed banking pin spring of banking pin neck, butted emery wheel shell inwall correspondence position respectively.

2, the emery wheel of hand-held abrasive machine as claimed in claim 1 changes safeties, it is characterized in that: plurality of positions is arranged with for banking pin pin end and inserts several draw-in grooves of locking on the described bevel gear wheel hub.

3, the emery wheel of hand-held abrasive machine as claimed in claim 1 or 2 changes safeties, it is characterized in that: form inclined thrust surface around the described stop button button face back of the body end.