CN2119540U

CN2119540U - Auto-clutch for electrical rotary machines and tools

Info

Publication number: CN2119540U
Application number: CN 92204443
Authority: CN
Inventors: 李松敏
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-03-17
Filing date: 1992-03-17
Publication date: 1992-10-21

Abstract

The utility model relates to an automatic clutch for the electrical rotary machine, which comprises an outer sleeve component. A first spring is arranged in the outer sleeve component. The bottom end of an inner hole is provided with a brake tooth and one end is provided with a first rotary body penetrated with a multi-angle hole to load the end of the multi-angle hole into the outer sleeve component. A multi-angle rotation axle passes through the multi-angle hole of the first rotation body and the outer sleeve component and is fixed. A second rotation body whose one end is provided with an engaging tooth corresponding to the brake tooth and the other end is provided with the multi-angle hole sheathed and matched with a rotation tool is arranged in the inner hole of the first rotation body. A second spring is arranged in the inner hole of the first rotation body and pushes the end portion of the second rotation body. A sleeve cover is arranged on the end portion of the first rotation body to fix each component in the inner hole of the fist rotation body to enable the rotary tool in operation to automatically stop rotation in large resistance is order to prevent the rotary tool from abrasion and the motor from being burnt.

Description

Auto-clutch for electrical rotary machines and tools

The utility model relates to a kind of electric rotation facility automatic clutch, and You Zhiqi is fit to be matched with all kinds of electric rotating tools, makes throw in the work stop the rotation at once when running into big resistance and in order to protection instrument and motor.

Traditionally, general electric rotation facility such as electric drill, electric reamer, electric screw driver ... Deng structure system substantially directly with drill bit, reamer, screwdriver ... be socketed on the power source body Deng throw, power is provided and holes by it, work such as fraising or auger shell silk, but the traditional structure of this kind is because of being the constantly form of output of power, so when throw work is finished and touched the bottom or still rotate when meeting obstructions with keeping, to making drill bit, reamer often causes wearing and tearing because of brill touches the overfrequency of concrete floor number of times, or the chase of screw terminal is destroyed by the continuous rotation of bottle opener consequently in inconvenience dismounting in the future, these all are us in the easy personal problem of contact of institute at ordinary times, but fail to come into one's own, thereby make the inventor germinate the meaning of improvement, through constantly grinding think of, trial-production, can obtain the utility model eventually, operate the most easily so that the user to be provided.

Thereby, main purpose of the present utility model is to provide a kind of electric rotation facility automatic clutch, mainly be made for the power supply body of general electric rotating tool and the media that continues between throw, make throw directly not be socketed on the power supply body, and be to be socketed on one of the utility model end earlier, end in addition with the utility model is socketed on the power supply body again, by detecting big resistance automatically and dependence between separate power supplies body and throw and reach life-span of guaranteeing throw and the motor life of power supply body in the utlity model has, so the utility model, has more the extensive characteristics of using scope applicable to various electric rotating tool.

Based on this, the main structure of the utility model include a coating part ,-first spring ,-first turn ,-rotating shaft ,-second is turned ,-second spring and a upper shield, wherein, first spring system inserts in the coating part; First turns, and an end is preset with endoporus and the endoporus bottom is provided with the actuating tooth, and in addition end be provided with run through more than the hole, angle, and with first coating part and contacting of packing into of turning in first spring; Polygonal rotating shaft system is made as the form of corresponding polygonal hole and tool one head, be with its pass first turn more than hole, angle and coating part and fixing; The second end face periphery of turning an end is provided with the corresponding engaging tooth that activates tooth, and end is provided with polygonal hole in addition, with its be placed on first turn within hole and make and activate tooth and engaging tooth is engaged with each other; Second spring system cover insert first turn within hole and contact second end of turning, upper shield system is nested in first and turns the end with each member in the fixing endoporus, makes integral body have the actor of automatic clutch.

Other purposes of the utility model and function are done further explanation so that be easy to understand the utility model through cooperating following accompanying drawing; the following stated only is in order to explain the preferred embodiment of the utility model; but not attempt is done any formal restriction to the utility model according to this; be to have any modification all must be included in the scope of the utility model institute desire protection at the following relevant the utility model of being done of identical creation spirit with all; wherein

(1) accompanying drawing:

Fig. 1 is for showing the three-dimensional exploded view of the utility model each several part design of part; And

Fig. 2 is for showing the plan cross-section action diagram of the utility model combination back.

(2) figure number part:

(1) upper shield (42) circular groove

(11) embedding edge (43) clasp

(2) second springs (5) first are turned

(3) second turn (51) run through polygonal hole

(31) flange (52) embedding ditch

(32) polygonal hole (53) activate tooth

(33) trepanning (6) first springs

(34) engaging tooth (7) coating part

(35) hold ring (8) power supply body

(4) rotating shaft (9) throw

(41) head

Shown in each figure, the composition member of the utility model includes that upper shield (1), second spring (2), an end face periphery that an end is provided with embedding edge (11) are provided with engaging tooth (34) and central authorities are provided with trepanning (33), and in addition end be provided be provided with in polygonal hole (32) and polygonal hole (32) hold second of ring (35) turn (3), one be polygonal rod type and tool head (41) and the rotating shaft (4), of circular groove (42) and be preset with first of endoporus and turn (5), run through polygonal hole (51) in what the one end was provided with corresponding rotating shaft (4).This polygonal hole (51) is through to endoporus, and endoporus bottom periphery is provided with the actuating tooth (53) of corresponding engaging tooth (34), and it holds embedding ditch (52) ,-first spring (6), an end of the embedding edge (11) that is provided with corresponding upper shield (1) to have external member outside the penetration hole (7) in addition; Its assembling mode is the coating part (7) of earlier first spring (6) being packed into, again with first turn (5) have and run through pack into coating part 7 and conflicting of one of polygonal hole (51) end to first spring (6), then rotating shaft (4) is passed first turn polygonal hole of running through of (1) (51) and the head (41) by endoporus and be stuck in its periphery, and fasten circular groove (42) and fix with clasp (43), utilize polygonal rotating shaft, with run through polygonal hole (51) can make rotating shaft (4) and first turn (5) combine and can rotate synchronously, in addition with second one of (3) tool engaging tooth (34) end coating part (7) of packing into of turning, and pack into trepanning (33) and activate tooth (53) and engaging tooth (34) engagement of the head (41) that makes rotating shaft (4), again second spring (2) is inserted endoporus and be enclosed within second and turn on (3) default flange (31), the upper shield (1) made of plastic material cooperates with embedding ditch (52) to overlap by embedding edge (11) and is fixed in first turn (5) end and be fixed on that each part in the endoporus is outer to be fallen subsequently, uses being combined into the utility model.

The utility model is when practical application; system makes rotating shaft (4) engage with power supply body (8); and throw (9) is as drill bit; bottle opener; reamer ... in the polygonal hole (32) of then packing into; and block default circular groove on throw (9) handle and be engaged in work by the ring (35) that holds of tool telescopic resilience; under normal circumstances; when power supply starts; rotating shaft (4) will drive first (5) rotation synchronously of turning; again by first turn (5) drive second turn (3) rotate and then make throw (9) rotate; and when throw axial force distribution work constantly but run into big resistance; as when getting into hard thing or the clip phenomenon being arranged; first turn (5) and upper shield (1) will to coating part (7) in, move and make activate tooth (53) and engaging tooth (34) disengaging and make first turn (5) be idle running; causing second turn (3) and the throw (9) all stops operating with the unlikely abrasion of protection throw (9); and when recovering nominal operating condition, then will make by the effect of first spring (6) and second spring (2) and activate the row engagement and can drive work again of tooth (53) and engaging tooth (34).

Comprehensive speech, the utility model is applicable to the motor-driven socket of no-clutch equipment in any electric rotating tool, has very good use value, and does not see in the past that the product that same structure is arranged was open, so the utility model meets the requirement of patent fully, file an application in the whence in accordance with the law.

Claims

A kind of electric rotation facility automatic clutch is characterized in that it comprises:

It is cylindric that-coating part is, and its bottom has a penetration hole,

-the first spring is loaded in the coating part,

-the first turns is preset with endoporus, and the one end is provided with one and runs through polygonal hole, and the endoporus bottom peripheral edge is provided with the actuating tooth, and the periphery of end then is provided with the embedding ditch in addition,

-rotating shaft one end is provided with head, and axial system is shaped to and corresponding above-mentionedly run through the form in polygonal hole and be provided with a circular groove at appropriate location, and also through first turn within nose end pass this and run through, the penetration hole of polygonal hole and coating part,

-clasp setting fastening is in the circular groove of above-mentioned rotating shaft and fixed rotating shaft,

-the second turn external diameter turn corresponding to first within the hole, the periphery of one end is provided with the engaging tooth of corresponding above-mentioned actuating tooth, and central authorities are provided with the trepanning of a corresponding shaft head, so that its pack into first turn within behind the hole, activate tooth and be engaged in engaging tooth and the head trepanning of packing into, in addition end then is provided with flange and central authorities are provided with polygonal hole, and appropriate location is provided with and holds ring so that the default circular groove of the throw of packing into is held and do not drop out in the polygonal hole

-the second spring places first body opening of turning and entangles second flange of turning; And

-upper shield, an end are provided with the embedding edge of the corresponding first embedding ditch of turning, and sentence each part of fixing in its endoporus and make one of second spring end contact its interior edge face in order to be nested in first end of turning, and can hold the hole that throw passes and hold to be provided with in addition;

By this automatic clutch of above-mentioned each part composition, can make moving tooth separate when bumping to big resistance and that an instrument that revolves is stopped the rotation is not impaired with protection throw and motor with engaging tooth when the throw axial pressure.