CN201316989Y

CN201316989Y - Assembling and disassembling head with multiple screwdriver head

Info

Publication number: CN201316989Y
Application number: CNU2008201688358U
Authority: CN
Inventors: 陈会甫
Original assignee: Individual
Current assignee: NINGBO HANPU TOOLS CO Ltd
Priority date: 2008-11-26
Filing date: 2008-11-26
Publication date: 2009-09-30
Anticipated expiration: 2018-11-26

Abstract

The utility model relates to an assembling and disassembling head with multiple screwdriver heads, which is characterized in that: the assembling and disassembling head with multiple screwdriver heads comprises a rotating sleeve, a screwdriver head frame, an output shaft, a front locating sheet, a rear locating sheet, a spacing piece and a resetting piece; the rotating sleeve is opened with a thorough hole for popping out the screwdriver heads, at least two screwdriver heads are contained on the screwdriver head frame, the output shaft penetrates through the middle part of the rotating sleeve axially and can rotate, the head part is provided with a cavity for the installation of the screwdriver heads, the front locating sheet is arranged at the front end part of the screwdriver head, the rear locating sheet is arranged at the rear end part thereof, the spacing piece is elastically arranged at the bottom part of the screwdriver head, and the resetting piece acts on the rotating sleeve and forces the rotating sleeve to move outwards. Compared with the prior art, the assembling and disassembling head with multiple screwdriver heads has the advantages that: when the screwdriver head is needed to be replaced, the rotating sleeve is axially pressed inwards, the selected screwdriver head can be automatically separated from the screwdriver head frame and is popped out from the through hole of the rotating sleeve, thereby realizing that the screwdriver head is rapidly arranged at the end part of the output shaft and meeting the requirements of high working efficiency.

Description

Mounting and dismounting head with multiple screwdriver bits

Technical field

The utility model relates to a kind of loading and unloading head with a plurality of screwdriver bits, and this loading and unloading head can be applicable on the screwdriver of direct current electric power tools or AC electrical instrument.

Background technology

Common screwdriver or the instrument of other screwdriver bits is housed, usually, an instrument correspondence is provided with a screwdriver bit, so can only finish a kind of function, use relatively limitation, for reaching one-object-many-purposes, developed the instrument that much possesses a plurality of screwdriver bits, promptly a tool body is equipped with a plurality of screwdriver bits, can according to actual needs screwdriver bit be changed from tool body, has expanded its function greatly.

As the patent No. is Chinese utility model patent " replaceable multi-function the screwdriver " (Granted publication number: CN2245521Y) of ZL95221763.5, this patent is formed by connecting by main body, runner, handgrip, have on its runner and can lay the variform knife bar through hole of the various edges of a knife, a push rod that is interspersed in runner and main body through hole is installed on the handgrip, the circular draw-in groove that the arc dop of the end of knife bar is stuck on back body and the runner contact-making surface is interior with the runner rotation, by push rod knife bar is released through hole and uses.Similarly also as CN2073796U, CN2056118U etc.The screwdriver loading and unloading of above-mentioned open source literature are comparatively loaded down with trivial details, take the more working time, need to do further to improve.

Recently find, generally also all carry the mounting box of a plurality of screwdriver bits in the electric tool of Shi Yonging, mounting box generally is located at head, handle or the body side equipotential of electric tool and is put, need the opening installation box when changing screwdriver bit, selecting the screwdriver bit that needs then loads onto, the screwdriver bit of changing is put into mounting box, and same loading and unloading are comparatively inconvenience also, influences the progress of work.

The utility model content

Technical problem to be solved in the utility model is the mounting and dismounting head with multiple screwdriver bits that provides a kind of screwdriver bit to eject automatically at the above-mentioned state of the art.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: this mounting and dismounting head with multiple screwdriver bits is characterized in that comprising

Rotary sleeve has the through hole that ejects for screwdriver bit;

The screwdriver bit frame is located at above-mentioned rotary sleeve inner chamber, is equipped with at least two screwdriver bits;

Output shaft axially passes above-mentioned rotary sleeve middle part and rotatable, and head has can be for the cavity of above-mentioned screwdriver bit installation;

The predetermination bit slice flexibly is arranged at the leading section of above-mentioned screwdriver bit;

Back keeper is arranged at the rearward end of above-mentioned screwdriver bit;

Can impel the pad of above-mentioned screwdriver bit ejection under the axial motion state inward of rotary sleeve, flexibly be arranged at the bottom of above-mentioned screwdriver bit; And

Return unit acts on above-mentioned rotary sleeve and forces this rotary sleeve outwards to move all the time.

Further, described screwdriver bit frame is fixed on the gearbox drive axle, and described output shaft then is located at aforesaid gears case power transmission shaft leading section.

As preferably, described return unit is one to be sheathed on the back-moving spring on the described output shaft, and this back-moving spring front end and described rotary sleeve offset, and rear end and described gearbox drive axle front end face offset.

As preferably, the inwall of described rotary sleeve rearward end has draw-in groove, and a jump ring is located in this draw-in groove and is limited the described relatively gearbox drive axle of described rotary sleeve and axially break away from.

Be equipped with a plurality of screwdriver bits on the described screwdriver bit frame circumferencial direction, and the screwdriver bit central axis on the described screwdriver bit frame and the axis of output shaft are an acute angle.Be convenient to screwdriver bit like this and break away from the screwdriver bit frame, also be convenient to simultaneously install.

As preferably, that described predetermination bit slice is is circular, compression spring one end and described rotary sleeve internal chamber wall offset, and the other end and described predetermination bit slice offset.

As preferably, described pad comprises

Base portion is circular, is sheathed on the described output shaft and with described rotary sleeve inwall to offset;

By the rubber-like tongue piece portion that base portion radially extends, be located at described screwdriver bit bottom in order to eject screwdriver bit.Simple in structure, result of use is good.Certainly the structure of pad and concrete the setting are not limited thereto, and base portion and tongue piece portion also can the split designs, as long as the radial motion that the axially-movable of base portion is converted into tongue piece portion just can reach the requirement of the technical program.

As preferably, described back keeper is circular, and the edge has the flanging to described screwdriver bit direction bending, and the rearward end of described screwdriver bit then is positioned at this flanging.

Compared with prior art, advantage of the present utility model is: when needing to change screwdriver bit, as long as rotary sleeve is extruding inward axially, selected screwdriver bit will automatically break away from the screwdriver bit frame, and in the through hole of rotary sleeve, eject, and then realize that the screwdriver bit Fast Installation in output shaft end, satisfies the demand of high workload efficient.The overall structure advantages of simple, assembling is quick.

Description of drawings

Fig. 1 is the example structure schematic diagram.

Fig. 2 is the embodiment decomposition assembling figure.

Fig. 3 is the embodiment cutaway view.

Fig. 4 is a rotary sleeve structural representation among the embodiment.

Fig. 5 is embodiment user mode figure.

The specific embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

Embodiment: with reference to figure 1, Fig. 2 and shown in Figure 3, the mounting and dismounting head with multiple screwdriver bits in the present embodiment comprises rotary sleeve 2, screwdriver bit frame 8, output shaft 1, predetermination bit slice 71, back keeper 72, pad 6 and return unit 42.

Upwards have a long through-hole 21 and five short through holes in 2 weeks of rotary sleeve, after moving axially, can eject and assembling long through-hole 21 for screwdriver bit 81, short through hole then can not eject screwdriver bit, only determine the screwdriver bit position for the user, certainly short through hole also can adopt transparent material to cover, and rotary sleeve 2 relative output shafts 1 turn.The inwall of rotary sleeve 2 rearward end has draw-in groove 22 (with reference to shown in Figure 4), and a jump ring 9 is located in the draw-in groove 22 and restriction rotary sleeve 2 axially breaks away from (reference is shown in Figure 4).

Screwdriver bit frame 8 is located at rotary sleeve 2 inner chambers and is fixed on the gearbox drive axle 31, circumferencial direction is equipped with the screwdriver bit 81 of a plurality of different purposes, the central axis of ccontaining back screwdriver bit 81 and the axis of output shaft 1 are an acute angle, be being arranged on the screwdriver bit frame 8 of tilting of screwdriver bit 81, be convenient to screwdriver bit 81 like this and break away from screwdriver bit frame 8, also be convenient to simultaneously install.

Output shaft 1 axially passes rotary sleeve 2 middle parts and is located at gearbox drive axle 31 leading sections, and head has the cavity that can supply screwdriver bit 81 to plug.

Predetermination bit slice 71 is circular, flexibly is arranged at the leading section of screwdriver bit 81 by a compression spring 41, and compression spring 41 1 ends and rotary sleeve 2 internal chamber walls offset, the other end and predetermination bit slice 71 offset.

Back keeper 72 is circular, and the edge has the flanging to the bending of screwdriver bit 81 directions, and the rearward end of screwdriver bit 81 then is positioned at this flanging (as shown in Figure 3).Back keeper 72 in the present embodiment is a sheet, also can adopt by rotary sleeve 2 internal chamber walls to constitute.

Pad 6 flexibly is arranged at the bottom of screwdriver bit 81, particularly: pad 6 comprises base portion 62 that is circular and a plurality of tongue piece portion 61 of rubber-like of radially being extended by base portion 62, base portion 62 is sheathed on the output shaft 1 and is positioned at rotary sleeve 2, and a plurality of tongue piece portion 61 are located at screwdriver bit 81 bottoms in order to eject screwdriver bit 81.

The screwdriver bit 81 of six different purposes is housed on the screwdriver bit frame 8 in the present embodiment, and accordingly, tongue piece portion 61 also is six.

Return unit 42 is one to be sheathed on the back-moving spring on the output shaft 1, acts on rotary sleeve 2 and forces this rotary sleeve 2 outwards to move all the time, and return unit 42 front ends and rotary sleeve inwall 2 offset, and rear end and gearbox drive axle 31 front end faces offset.Also be provided with swivel nut 32 on the gear housing 3, in order to screwdriver bit loading and unloading head is connected on the gear housing 3.

With reference to shown in Figure 5, mounting and dismounting head with multiple screwdriver bits 101 is located at hand held electric drill 100 heads, selected good screwdriver bit 81, rotating rotary sleeve 2 makes this screwdriver bit 81 aim at the long through-hole 21 of rotary sleeve, the application of force makes axially motion inward of rotary sleeve 2 then, through hole 21 just in time moves to and satisfies the position that screwdriver bit 81 ejects, simultaneously, rotary sleeve 2 drives predetermination bit slice 71, the base portion 62 of screwdriver bit 81 and pad moves slightly inwards, the tongue piece portion 61 of screwdriver bit 81 extruding pads, thereby make tongue piece portion 61 accumulation of energys of pad, tongue piece portion 61 forces in screwdriver bit 81 bottoms, when the application of force during greater than the active force of predetermination bit slice 71 and back keeper 72, impel screwdriver bit 81 to break away from screwdriver bit frame 8, and then from the through hole 21 of rotary sleeve, eject automatically, unclamping rotary sleeve 2, rotary sleeve 2 resets under return unit 42 effects.After using up, during dress screwdriver bit 81,, overcome the elastic force of tongue piece portion 61 simultaneously, just can accurately install spacing as long as screwdriver bit 81 is inserted screwdriver bit frame 8.

Claims

1, a kind of mounting and dismounting head with multiple screwdriver bits is characterized in that comprising

Rotary sleeve has the through hole that ejects for screwdriver bit;

Back keeper is arranged at the rearward end of above-mentioned screwdriver bit;

2, mounting and dismounting head with multiple screwdriver bits according to claim 1 is characterized in that described screwdriver bit frame is fixed on the gearbox drive axle, and described output shaft then is located at aforesaid gears case power transmission shaft leading section.

3, mounting and dismounting head with multiple screwdriver bits according to claim 2 is characterized in that described return unit is one to be sheathed on the back-moving spring on the described output shaft, and this back-moving spring front end and described rotary sleeve offset, and rear end and described gearbox drive axle front end face offset.

4, mounting and dismounting head with multiple screwdriver bits according to claim 2 is characterized in that the inwall of described rotary sleeve rearward end has draw-in groove, and a jump ring is located in this draw-in groove and is limited the described relatively gearbox drive axle of described rotary sleeve and axially break away from.

5,, it is characterized in that being equipped with a plurality of screwdriver bits on the described screwdriver bit frame circumferencial direction, and the screwdriver bit central axis on the described screwdriver bit frame and the axis of output shaft are an acute angle according to the described mounting and dismounting head with multiple screwdriver bits of arbitrary claim in the claim 1 to 4.

6, according to the described mounting and dismounting head with multiple screwdriver bits of arbitrary claim in the claim 1 to 4, it is characterized in that described predetermination bit slice is circular, compression spring one end and a described rotary sleeve internal chamber wall and offsets, the other end and described predetermination bit slice offset.

7,, it is characterized in that described pad comprises according to the described mounting and dismounting head with multiple screwdriver bits of arbitrary claim in the claim 1 to 4

By the rubber-like tongue piece portion that base portion radially extends, be located at described screwdriver bit bottom in order to eject screwdriver bit.

8, according to the described mounting and dismounting head with multiple screwdriver bits of arbitrary claim in the claim 1 to 4, it is characterized in that described back keeper is circular, the edge has the flanging to described screwdriver bit direction bending, and the rearward end of described screwdriver bit then is positioned at this flanging.