CN203171037U

CN203171037U - Suspended single-fastener projected-key inner-connected keyless drill chuck

Info

Publication number: CN203171037U
Application number: CN 201220449579
Authority: CN
Inventors: 陈肇和
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-08-27
Filing date: 2012-08-27
Publication date: 2013-09-04
Anticipated expiration: 2022-08-27

Abstract

The utility model relates to a suspended single-fastener projected-key inner-connected keyless drill chuck of a drill gun, which comprises the following components: a chuck member which is assembled in the front housing, an inner conical nut, a clamping foot, a front housing and a back housing. A locking board is equipped in the back housing. A middle square hole of the locking board is sleeved on the outer diameter of the back part of the chuck member. The inner side of the lower end of the square hole is movably inserted into a through hole below the chuck member, and is partially exposed from the hole wall. The exposed part can be inserted into a groove of a drill gun main shaft when the drill chuck is mounted. A spring is sleeve inside the upper end of the square hole and causes the locking board to reset automatically and move. The upper end of the locking board is provided with a button for pressing by hand. A projected key is provided at the inner end of the inner hole at the back part of the chuck member. The projected key can be buckled with a cross-shaped gap on the outer diameter of the front part of the drill gun main shaft. The suspended single-fastener projected-key inner-connected keyless drill chuck of the drill gun is characterized in that: a planar bearing is provided behind a front backup ring; and the planar bearing can reduce friction resistance of the bracket to the gasket and the back backup ring. Therefore the suspended single-fastener projected-key inner-connected keyless drill chuck of the drill gun has the following advantages: reasonable structure, high convenience in detachment, and high convenience in use.

Description

Connect hand fastening drill clutch in the protruding key of the single button of suspension type

Technical field

The utility model relates to the drill chuck on the hand-held drill gun, especially is adapted at hanging on the drill gun band drilling tool conversion equipment drill chuck of selective use.

Background technology

The drill gun of band drilling tool conversion equipment, because it is hung with the drill chuck of a plurality of band drilling tools, the different drilling tools that hanging can be selected to use on demand, therefore be popular, but in use the suspension type drill chuck is found some problems, frictional heating takes place to the pad at high-speed rotation drill chuck rear portion just together with the back back-up ring in support sometimes that have drilling tool during as operation, even the wearing and tearing apparent surface, bring unnecessary too much power consumption, therefore must solve for the weak point that exists.

Summary of the invention

Technical problem to be solved in the utility model is at above-mentioned prior art present situation, and a kind of negative consequence that can avoid the energy resource consumption that relatively friction brings is provided, adopt plane bearing substitute original relative friction pad and after back-up ring.

The utility model solves the technical scheme that above technical problem takes: comprise that the front portion is provided with three inclined holes, the rear portion has the collet body of endoporus, insert three pinches of collet body front portion, interior flare nut with pinch top threaded engagement, procapsid tightly overlaps interior flare nut and interior flare nut is inlaid in the groove of collet body, the procapsid rear portion is back casing, back casing is blocked by preceding back-up ring, the collet body extension external diameter of preceding back-up ring back is set with plane bearing and back back-up ring, plane bearing is blocked by the back back-up ring, be provided with lockplate in the back casing, spring, endoporus inner end, collet body rear portion is provided with protruding key, this protruding key can with the anterior external diameter of drill gun main shaft on " ten " word breach be interlocked, being shaped on square hole in the middle of the described lockplate is linked on the rear end external diameter of collet body, the inboard, middle square hole lower end of lockplate is inlaid in the through hole of the collet body back lower place, and has part to expose in hole wall, and this exposed part can be entrenched in when drill chuck is installed in the groove of drill gun main shaft; Inboard, square hole upper end is embedded with spring, spring can reset lockplate certainly in through hole movement, the lockplate upper end exposes in the side opening of back casing external diameter one side, and there is part to expose on the surface, it is the button of pressing for hand, the extension external diameter of the collet body of back-up ring back is set with plane bearing and back back-up ring before it is characterized in that, before the intermediate outer of back-up ring and plane bearing be installed in suspension in the hole on the drilling tool conversion support of drill gun when using afterwards, set plane bearing can reduce the frictional resistance with bracket end face, avoids causing influence to rotating speed because of misoperation.

The utility model installation or removal are convenient, are connected firmly, and are rational in infrastructure, easy to use.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the assembling half sectional view of the utility model embodiment.

Fig. 2 is Figure 1A-A cutaway view.

Fig. 3 is the cutaway view of Figure 1B-B.

Fig. 4 is the front view of drill gun front end.

1. pinch, 2. collet body, 3. in flare nut, 4. procapsid, 5. back casing, 501. side openings, 6. lockplate, 601. buttons, 201. protruding keys, 202. through holes, 203. holes, 204. symmetrical planes, 7. spring, 8. before back-up ring, 9. plane bearing, 10. back back-up ring.

The specific embodiment

Collet body 2 front ends of the present utility model are shaped on the endoporus of three inclinations, are fitted with threaded three pinches 1 in the endoporus, by the interior flare nut of procapsid 4 tight covers; Interior flare nut is entrenched in the groove of collet body 2, when rotating procapsid 4, three pinch 1 scalable movements, one side of the back face 203 of collet body 2 has the through hole 202 that is interlinked to the outside in, the square hole of lockplate 6 is sleeved on 203 external diameters of hole, inboard, square hole lower end is entrenched in the through hole 202, and exposed in hole 203 by part, be fitted with spring 7 in the middle of lockplate square hole upper end is inboard, when button 601 is pressed, be inlaid in lockplate 6 through hole 202 in and on endoporus 203 walls, can reveal and can flood with the groove fastening of drill gun main shaft or separate; Endoporus inner end, collet body rear portion is provided with protruding key, this protruding key can with the anterior external diameter of drill gun main shaft on " ten " word breach be interlocked; Back casing 5 ring bodies one side has side opening 501, and lockplate 6 is inlaid in the side opening 501 and has button 601 to expose outer surface at back casing 5, and the space of plane bearing 9 fronts is apart from hanging for installing at the drill gun conversion support.

When needs use this drill chuck, hold and press the button 601 of back casing 5 sides, at this moment lockplate in ask that former the exposing at the quilt on the wall surface of the hole of part of square hole inside lower end return in through hole, after being inserted in the drill gun main shaft, push away only terminal smoothly, meanwhile the protruding key of inner end, hole and " ten " word breach on the drill gun main shaft are interlocked, decontrol pressing button 601 this moment, button resets under the effect of spring 7 certainly, again embedded in the drill gun main shaft groove sealed by the lockplate 6 of returning and flooding in through hole 202, finish the installation of drill chuck of the present utility model, if dismounting then can be dismantled with same mode of operation and simultaneously outside pulling.

Claims

1. connect hand fastening drill clutch in the protruding key of the single button of suspension type, comprise that the front portion is provided with three inclined holes, the rear portion has the collet body (2) of endoporus, insert three pinches (1) of collet body front portion, interior flare nut (3) with pinch top threaded engagement, procapsid (4) tightly overlaps interior flare nut and interior flare nut is inlaid in the groove of collet body, the procapsid rear portion is back casing (5), back casing is blocked by preceding back-up ring, the collet body extension external diameter of preceding back-up ring back is set with plane bearing and back back-up ring, plane bearing (9) is blocked by back back-up ring (10), be provided with lockplate (6) in the back casing, spring (7), endoporus inner end, collet body rear portion is provided with protruding key (201), this protruding key can with the anterior external diameter of drill gun main shaft on " ten " word breach be interlocked, being shaped on square hole in the middle of the described lockplate is linked on the rear end external diameter of collet body, the inboard, middle square hole lower end of lockplate is inlaid in the through hole (202) of the collet body back lower place, and having part to expose in hole wall, this exposed part can be entrenched in when drill chuck is installed in the groove of drill gun main shaft; Inboard, square hole upper end is embedded with spring, spring can reset lockplate certainly in through hole movement, the lockplate upper end exposes in the side opening (501) of back casing external diameter one side, and there is part to expose on the surface, it is the button of pressing for hand (601), the extension external diameter of collet body of back-up ring back is set with plane bearing and back back-up ring before it is characterized in that, the intermediate outer of preceding back-up ring and plane bearing is installed in suspension in the hole on the drilling tool conversion support of drill gun when using afterwards.