CN1023088C

CN1023088C - Electric toal for screw assemble and disassemble

Info

Publication number: CN1023088C
Application number: CN 90109107
Authority: CN
Inventors: 黄陈淑霞
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-11-09
Filing date: 1990-11-09
Publication date: 1993-12-15
Anticipated expiration: 2005-11-09
Also published as: CN1061178A

Abstract

The present invention relates to an electric tool for assembling and disassembling screws, which comprises a motor, a base and a passive element, wherein the first end of the base is combined with a clutch; the output shaft of the motor penetrates through the clutch and the first end of the base; a driving element is arranged in the hollow side edge of the base; the first end of the driving element is provided with a pair of concave holes. After a pair of bolt columns are sheathed with a spring, the bolt columns extending from the first end of the base are embedded into the concave holes of the driving element; the first end of the passive element is provided with a groove to form a pair of dentate parts. The side plate of the clutch is outwards thrown off through the high-speed rotation of the motor. When the clutch retreats outwards, the bolt columns also retreat outwards so as to leave the concave holes for swinging the driving element. Therefore, the passive element rotates through the shock of the high-speed rotation to assemble and disassemble screws.

Description

Electric toal for screw assemble and disassemble

The present invention relates to a kind of electric toal for screw assemble and disassemble, refer to that especially a kind of utilization bump reaches the structure of transmission rotation, to be used for the tire screw that driver's tool loads and unloads automotive wheel.

The sealed strength of the tire screw of general vehicle is very big, need to change or during full capping when wheel casts anchor, and desires all efforts very of demolition, installation screw, and general occasion has pneumatic tool unlike the maintenance field, so it is all very inconvenient to desire the demolition, installation tire.Because automobile itself has battery, thus my announcement in No. 4727780 United States Patent (USP) of application on March 1 in 1988 Christian era a kind of with the automobile storage battery be driving force with the vehicle tyre handling instrument, load and unload the screw on the tire.Yet because the driving force of this battery is not very powerful, and with manual control output, the time grabs inaccurate, so sometimes have the facts of changeing motionless.

I further provide a kind of with the vehicle tyre handling instrument in No. 4920831 United States Patent (USP) of application on April 19 in 1988 Christian era, have that a clutch is incorporated into motor output end and a driving element rotates jointly, when turning over, motor reaches a specific speed when above, clutch mat rotary centrifugal force opens, clutch is retreated, and support the driving control element of fixed drive element to swing, clash into the passive device of output rotation, utilize high-speed rotation to add knock-on effect, the strength of output is heightened, and reach loading and unloading tire screw purpose.Load and unload screw though can obtain enough strength in this design use, but because inner member is a lot of, cause the trouble of making assembling, and driving element utilizes side to swing in the tooth-like part tabling of passive device and clashes into and reaches the purpose that drives rotation, so as swing in that action is slightly delayed or ahead of time, will undermine the side of driving element and the tooth-like part of passive device.

Therefore, purpose of the present invention just provides the lightest and the handiest, effective a kind of electric toal for screw assemble and disassemble, successfully uses for the user is convenient, and the producer also can simplify fabrication schedule and reduce manufacturing cost.

According to electric toal for screw assemble and disassemble of the present invention, comprise a motor, be connected to the power source of automobile storage battery, one pedestal, first end of pedestal is in conjunction with clutch, and supply motor output end to penetrate, with driven rotary, the pedestal side is established a drive unit, first end of drive unit is provided with a pair of shrinkage pool, the a pair of hitching post that is with screw stretches into and embeds the shrinkage pool from first end of pedestal, and with the fixed drive device, the centre of drive unit is established a through hole, stretch into and pass through hole from second end of pedestal for a supporting pillar, supporting drive unit, a passive device has two tooth-like parts and stretches into the pedestal from second end of pedestal, and tooth-like part just is positioned at side within the driving element, when motor drives pedestal together with driving element, during the clutch rotation, when not being very fast, driving element is fixed by hitching post and is not contacted passive device at motor speed, forms idle running; After motor speed speeds, the biside plate of clutch is outwards thrown away, retreat at clutch and hitching post, but driving element forms swing state, embed the tooth-like part of passive device with the side of driving element, utilize the impact of rotation at a high speed to drive this passive device rotation and export powerful strength, load and unload the screw of tire.

But the present invention's electric toal for screw assemble and disassemble further within the driving element side side be provided with the steel ball of retraction, cooperate the tooth-like part periphery of passive device to be thicker shape, with side surface outside steel ball contact passive device one tooth-like part of driving element one side, another side of driving element is embedded in another tooth-like part of passive device exactly, to transmit the rotation of output.

The present invention significantly reduces on component number, except reducing manufacturing cost, simplifies and makes outside the linkage editor, also alleviate overall weight, very help the speed that pedestal is driven to rotate, that is be to reach higher speed in the shorter time, clutch retreats, to drive the passive device rotation.

Below lift a preferred embodiment now, and give explanation, make the present invention's feature and advantage more clear by accompanying drawing is detailed.

Fig. 1 is the present invention's a cut-away view, shows the tectonic relationship of inactive state,

Fig. 2 is the present invention's a part exploded view,

Fig. 3 and Fig. 4 are profiles, show that hitching post embeds and leave the driving element shrinkage pool,

Fig. 5 and Fig. 6 are profiles, the chimeric driving of display driver element and passive device.

See also Figure 1 and Figure 2, the present invention's electric toal for screw assemble and disassemble 100 is to connect jack from automobile cigarette lighter with joint, to accept the electric power of automobile storage battery, one of electric toal for screw assemble and disassemble 100 end is provided with motor 101 to drive rotation, the other end (outer end) is then in conjunction with outwarding winding joint, with loading and unloading screw or nut.

The present invention's feature comprises a pedestal 10 at electric toal for screw assemble and disassemble 100, and first end of pedestal 10 is in conjunction with clutch 20 and supply the output shaft of motor 101 to penetrate to drive pedestal 10 rotations.This clutch 20 has pair of side plates 21 all to be held by spring, and when fast rotational, this side plate 21 can be thrown away by centrifugal force, clutch 20 can outwards be omited move back.The side of pedestal 10 hollows out, and embeds for a driving element 30, and penetrates and pass the default through hole 31 of driving element 30 central authorities to support driving element 30 with a post 13 from pedestal 10 second ends, driving element 30 is can swings shape.Through hole 31 two ends of this driving element 30 slightly thicken, and are smoothly in order to swing.First end surfaces of driving element 30 is provided with a pair of shrinkage pool 32, first end of pedestal 10 relatively is provided with a pair of through hole and penetrates and embed in the shrinkage pool 32 for the hitching post 11 that is with spring 12, with fixed drive element 30, driving element 30 can't be swung, and first end (outer end) of hitching post 11 just contact clutch 26(as shown in Figure 3).First end of one passive device 40 is provided with short slot and forms a pair of tooth-like part 41, and the footpath is slightly larger than footpath outside other parts outside the tooth-like part 41, first end of passive device 40 is inserted in second end of pedestal 10, just be positioned at the below of driving element 30, and when pedestal 10 rotation, driving element 30 fails to drive this passive device 40(such as Fig. 5) second end connect the joint (not shown) of outwarding winding.

When motor 101 rotations, under the still not high state of commencing speed, pedestal 10 is together with clutch 20 and driving element 30 rotations, but hitching post 11 fixed drive elements 30 make it and can not swing, can't drive passive device 40, that is only form idle running (as shown in Figures 3 and 4).When motor 101 rotates to a certain speed when above again, the biside plate 21 of clutch 20 can outwards be thrown away (because of the event of centrifugal force), so clutch 20 outwards withdraws from, make hitching post 11 outwards move back (because of the power of spring 12), this moment, driving element 30 was to swing, and with the tooth-like part 41 of side embedding passive device 40, utilized rotation at a high speed to add impact and drove passive device 40 rotations (as Fig. 4 and Fig. 6), be to export powerful strength, with the loading and unloading screw.And after 40 rotations of ram drive passive device, the rotating speed of motor 101 slows down again, clutch 20 inwardly advances, and driving element 30 is separated, again after motor 101 rotating speeds are accelerated again with passive device 40, impact to transmit driving revolving force once more, after rotation for several times, can load and unload screw.

Please consult shown in Figure 2 again, but the present invention's driving element 30 is equipped with the steel ball 33 of a retraction in the two side ends medial surface, when driving element 30 can be swung, one of the steel ball 33 contact passive devices 40 of one side tooth-like part 41 outer surfaces, make another tooth-like part 41 of another side embedding passive device 40 of driving element 30, with these passive device 40 rotations of smooth driving.

Because all elements of pedestal 10 significantly reduce, weight also alleviates a lot of, so desire to reach easier fast during motor 101 rotations, takes also shortlyer, more helps reaching and impacts the purpose that drives rotation at a high speed.

The above is with a preferred embodiment the present invention to be described, the displacement of the change of number and equivalence element such as must be subordinate to the present invention's category.

Claims

1, a kind of electric toal for screw assemble and disassemble comprises:

One motor is connected to the power source of automobile storage battery;

One pedestal, first end are in conjunction with a clutch, and the output shaft of motor penetrates first end of clutch and pedestal, to drive the pedestal rotation, this clutch has biside plate lives with the spring traction, and side plate can be thrown away because of pedestal rotates by centrifugal force at a high speed, and clutch is drawn back;

One driving element is located in the side that pedestal hollows out, and passes the default through hole of driving element central authorities with a post from pedestal second end, to hold on driving element;

One passive device, first end are provided with fluting and form a pair of tooth-like part, and the footpath is slightly larger than footpath outside other parts outside the tooth-like part, and second end of passive device links the joint of outwarding winding of releasing open screw; First end of passive device is inserted in second end of pedestal, and tooth-like part just is positioned at the driving element below;

It is characterized in that:

First end of described driving element is provided with a pair of shrinkage pool in addition, behind a pair of hitching post cover upper spring, stretch into and embed in the shrinkage pool of driving element from pedestal first end, with the fixed drive element, and first end of two hitching posts contacts with clutch, rotate at a high speed with motor, the clutch side plate is outwards thrown away, clutch outwards moves back, make hitching post also outwards move back and leave shrinkage pool, then driving element is swung, and embeds the tooth-like part of passive device with one of driving element side, bump with rotation at a high speed drives this passive device rotation, and the loading and unloading screw.

2, electric toal for screw assemble and disassemble according to claim 1 is characterized in that: but this actuator is further established the steel ball of a retraction at the medial surface of each side, with surface outside the contact tooth-like part, another side is embedded in another tooth-like part smoothly.