CN2384744Y

CN2384744Y - Centrifugal device of electric tool

Info

Publication number: CN2384744Y
Application number: CN 99244119
Authority: CN
Inventors: 黄万章
Original assignee: YUJIN INDUSTRY Co Ltd
Current assignee: YUJIN INDUSTRY Co Ltd
Priority date: 1999-09-02
Filing date: 1999-09-02
Publication date: 2000-06-28
Anticipated expiration: 2009-09-02

Abstract

The utility model discloses a centrifugal device of an electric tool. A seat body is provided with a main shaft and a driving shaft; the main shaft is fixed on the seat body and the driving shaft can rotate relative to the seat body; the driving shaft is combined with an impact block; a peg column is drilled in a column hole arranged on the seat body; an elastic element is arranged between the peg column and the seat body; the seat body is provided with a centrifugal device. The centrifugal device comprises a linking element with a weight block; the seat body is additionally pivoted with a pressing plate; the pressing plate can be in contact with the end part of the peg column. The utility model has the advantages of simple structure, low cost, and reliable work.

Description

The centrifugal device of electric tool

The utility model provides a kind of centrifugal device of electric tool, You Zhiqi is applicable to whether control the hitching post that is located in pedestal by the height of centrifugal force stretches out pedestal, and then make this hitching post bump or do not clash into the impact block that is located at this pedestal, so that also be located at the driving shaft of this pedestal produces the impulsive force of moment in direction of rotation the centrifugal device of electric tool.

The instrument that tradition is used for loading and unloading nut can be divided into manual, electronic and pneumatic etc. three kinds substantially.Hand-operated tools wherein is general open-end wrench, box spanner or the like, and it is not high to be suitable for use amount, or need not expend when too great strength is loaded and unloaded bolt or nut and use.Another kind of pneumatic handling instrument then is to utilize compressed-air actuated power to come the main axis rotation of driven tool, and can provide shock effect, make the sleeve barrel tool that is located at main shaft when being placed in bolt head or nut, can unscrew, or lock bolt or nut very tight by bolt head or the nut that jarring forces will be locked very tightly.But, pneumatic compression devices cooperated because must having such as other relevant equipment such as air compressors, the weight of its integral device and volume are all bigger, so be suitable for that factory or heavy construction are on-the-spot to be used, and for the nut that generally is locked in vehicle tyre what for be inconvenience.

The sealed strength of the tire bolt of general vehicle and nut is very big, when wheel casts anchor need replacing or full capping, desire the demolition, installation screw and all very require great effort, the occasion that common vehicle casts anchor can't have pneumatic tool just like the maintenance place, so it is all very inconvenient to desire the demolition, installation tire.

In order to solve the above problems, the inventor once designed a series of electric tools that are used as loading and unloading bolt and nut, and for example the patent application case of No. 79211743 and No. 85210353 is applied in Taiwan.The feature of these two patent cases all is to include a pedestal in its structure, one clutch, one driving element and a passive device, when pedestal is subjected to motor to drive the centrifugal force that rotates and acquire a certain degree, clutch will move and make driving element clash into passive device, and then make driving shaft produce the impulsive force of moment and can produce impact so that it is unscrewed apace to bolt or nut in the direction of rotation, and when the rotating speed reduction of pedestal causes centrifugal force also to reduce, this clutch homing and make driving element can not clash into passive device then is so that driving shaft is in normal rotation status.Yet the clutch configuration of aforementioned two patent cases is all very complicated, and manufacturing cost is higher.So the utility model promptly is to overcome the shortcoming of the clutch of above-mentioned two patent cases, and provides a kind of extremely to be suitable for being applied in the brand-new clutch configuration of electric tool.

Main purpose of the present utility model is providing a kind of centrifugal device of electric tool, and the structure of its centrifugal device more traditional person more simplify, and more can reduce manufacturing cost.

Another purpose of the present utility model is providing a kind of centrifugal device of electric tool, it is equipped with a hitching post at a pedestal, and be provided with link driving element and pressing plate at this pedestal, the centrifugal force that is produced when rotating by body rotates by the interlock pressing plate, and then it is outer and bump is located at the impact block of this pedestal that hitching post is released pedestal, causing the vibrating effect of moment, and centrifugal force allows this hitching post automatically reply original position and to make pedestal at free rotation state when reducing.

The centrifugal device of electric tool described in the utility model, it is provided with a main shaft and a driving shaft at a pedestal, and this pedestal is fixed in this main shaft system, and this driving shaft can be with respect to this pedestal rotation, this driving shaft is combined with an impact block, this pedestal is provided with a post hole, be equipped with a hitching post in this post hole, this pedestal is provided with centrifugal device, and this centrifugal device is connected with in this hitching post, centrifugal force centrifugal device in the season action that acquires a certain degree by the rotation of this main shaft drives pedestal, and then an end of this hitching post of interlock axially stretches out the post hole of pedestal and clashes into the side of this impact block, centrifugal force then makes the post hole of this hitching post retraction pedestal when reducing and does not clash into this impact block.

Aforesaid centrifugal device is to include:

One link driving element, its body is provided with pouring weight, and has extended connecting rod in this body, and this link driving element system is located at aforesaid pedestal, and makes the eccentric position of this pouring weight system with respect to this pedestal, is provided with flexible member between this link driving element and this pedestal.

One pressing plate is to be hubbed at aforesaid pedestal and to touch aforesaid hitching post end, and is subjected to aforesaid link driving element interlock.

One limiting element is to be located on this pedestal, in order to limit the scope of this link driving element at this pedestal.

Be provided with flexible member between aforesaid hitching post and the pedestal, make the post hole of this pedestal of end retraction of this hitching post by the elastic force of this flexible member.And during the centrifugal force that the rotation of this pedestal acquires a certain degree, make this link driving element overcome the elastic force of flexible member and penetrate direction at the width of cloth and outwards move, and then make aforesaid connecting rod interlock pressing plate rotate, make pressing plate press this hitching post and make an end of hitching post be pushed out the post hole of pedestal.

The centrifugal device of described electric tool, wherein, the connecting rod of aforementioned link driving element is provided with breach, and aforesaid pressing plate is formed with socket part, and this socket part is matched with in this breach, use when connecting rod moves can, this socket part and this pressing plate is rotated.

Aforesaid pedestal is provided with corresponding bearing in two, and aforesaid pressing plate is articulated in this two bearing.

This bearing is provided with pod, and aforesaid pressing plate is provided with the axial region that is positioned at relative two sides, this axial region is located in this pod and this pressing plate is articulated in this bearing.

This axial region is provided with roller, makes this axial region in this roller is inserted this pod, and covers cover plate to hide worn-out this pod in this bearing, breaks away from this pod to prevent this axial region and roller.

This pressing plate is the L shaped shape of one Cheng Kaiwei, and the end that this is L shaped also is made as the socket part of the breach that can be contained in aforementioned connecting rod, and this L shaped other end system is as compression part, and relative two sides of the vertical edges that it is L shaped then are split into and are aforesaid axial region.

Relative two sides of the body of this link driving element are respectively equipped with an alar part, and this alar part also is provided with groove, and this bearing is provided with protruded stigma in addition, are groove and this protruded stigma that aforesaid flexible member two ends is combined in this alar part respectively.

This flexible member is an extension spring.

Aforesaid limiting element is a kind of perforative space with Π shape that is bent into, and makes aforesaid link driving element pass this Π shape perforative space, and this limiting element is fixed on aforesaid pedestal.

Aforesaid hitching post one end is provided with flange, and aforesaid flexible member is the compression spring, is that this flexible member is placed in this hitching post and hitching post is penetrated the post hole of aforementioned pedestal, makes two ends of this flexible member be butted on this flange and pedestal respectively.

The utility model simple structure, work is sensitive, and reliable, cost is low.

Fig. 1 is the stereogram of centrifugal device configuration described in the utility model;

Fig. 2 is the three-dimensional exploded view of each element syntagmatic of the utility model centrifugal device;

Section plan when Fig. 3 does not stretch out pedestal for the utility model centrifugal device hitching post;

When Fig. 4 does not stretch out pedestal for the hitching post that shows Fig. 3, the side plan view that impact block can rotate freely with main shaft;

Fig. 5 is the plan cross-section action diagram of Fig. 3, and it shows the state when this hitching post stretches out pedestal;

When Fig. 6 stretched out pedestal for the hitching post that shows Fig. 5, impact block struck the state of hitching post.

The figure number explanation

1 pedestal, 11 post holes

12 bearings, 121 first screws

122 pods, 123 protruded stigmas

13 second screws, 14 limiting elements

141 holes, 142 screws

15 flexible members, 16 cover plates

161 holes, 162 screws

2 main shafts, 21 croze holes

3 hitching posts, 31 flanges

4 flexible members, 5 driving shafts

51 impact blocks, 511 recesses

52 bearings, 6 link driving element

61 bodies, 611 alar parts

6110 grooves, 612 connecting rods

6121 lack 62 pressing plates

621 axial regions, 622 compression parts

623 socket parts, 63 pouring weights

64 rollers

The utility model is described in further detail below in conjunction with embodiment shown in the drawings:

As shown in Figures 1 and 2, electric tool centrifugal device provided by the utility model, on a pedestal 1, be provided with a main shaft 2 and a driving shaft 5, this main shaft 2 is a side of being fixed in pedestal 1, and the end of this main shaft 2 is formed with croze hole 21, is utilize this croze hole 21 to be arranged in the power transmission shaft of motor (not shown); And driving shaft 5 is to cooperate a bearing 52 to be located at the relative another side of pedestal 1, makes that driving shaft 5 can be with respect to this pedestal 1 rotation; Driving shaft 5 is combined with a rectangular impact block 51 regularly, and driving shaft 5 is to be fixed on the position of this impact block 51 near the one end; Relative two sides of this impact block 51 are formed with the recess 511 of corresponding aftermentioned hitching post 3 surperficial radians respectively; This driving shaft 5 is for loading and unloading nut or bolt in order to sheathed instrument sleeve (not shown).Pedestal 1 is provided with a post hole 11 that connects, and is equipped with the hitching post 3 of a circular bar shape in this post hole 11, and an end of hitching post 3 is provided with diameter and is big flange 31 than hitching post 3, and hitching post 3 is after being matched with a flexible member 4, this hitching post 3 is arranged in this post hole 11 again; At present embodiment, flexible member 4 is the compression spring, and makes hitching post 3 pass the compression spring; Make the two ends of flexible member 4 be butted on the flange 31 and pedestal 1 of hitching post 3 respectively; Flexible member 4 is to make between flange 31 and the pedestal 1 to remain on ultimate range when free state, thereby makes the post hole 11 with respect to hitching post 3 other end retraction pedestals 1 of this flange 31.This pedestal 1 that is same as the direction of this main shaft 2 is provided with two bearings 12 that are positioned at relative position.Bearing 12 is provided with the pod 122 that connects to side, outstanding protruded stigma 123 and screw 121; Be provided with two screws 13 that are positioned at relative position on this pedestal 1 in addition.Pedestal 1 is provided with centrifugal device, and this centrifugal device is connected with in this hitching post 3, centrifugal force centrifugal device in the season action that acquires a certain degree by motor drive shaft 2 and pedestal 1 rotate simultaneously, and then an end of interlock hitching post 3 stretches out the post hole 11 of pedestal and the recess 511 of impact piece 51 sides, and centrifugal force then makes the post hole 11 of these hitching post 3 retraction pedestals 1 when reducing and no longer clashes into this impact block 51.

Aforesaid centrifugal device is to include: a link driving element 6, a pressing plate 62 and a limiting element 14; Wherein, link driving element 6 has a body 61, and a side-line of this body 61 forms the opening shape, and a metal pouring weight 63 is inserted in the body 61 to increase the weight of body 61 by this opening; Relative both sides in this body 61 are respectively equipped with connecting rod 612, and this two connecting rod 612 is respectively equipped with a breach 6121 near the same position of a free-ended side; The relative both sides of body 61 are respectively equipped with an alar part 611 in addition, and the limit, lower end of this alar part 611 is provided with groove 6110.Pressing plate 62 is the one-body molded L shaped shape that is, this L shaped end is made as the socket part 623 of the breach 6121 that can be contained in aforementioned connecting rod 612, and this L shaped other end system is as compression part 622, relative two sides of the vertical edges that it is L shaped then form axial region 621, this two axial region 621 can cooperate a roller 64 respectively, and roller 64 can freely be rotated with respect to this axial region 621.Aforesaid limiting element 14 is to be bent into the perforative space with Π shape with the metal sheet one, and is formed with ear in its two side, is provided with hole 141 in this ear again.

Aforesaid link driving element 6 is to place on this pedestal 1, and make its two connecting rod 612 simultaneously between two bearings 12, again the socket part 623 of pressing plate 62 is inserted the breach 6121 of this connecting rod 612, the pod 122 that makes the roller 64 that cooperates aforementioned axial region 621 insert this bearing 12 together simultaneously, then a cover plate 16 is covered in and covers this pod 122 on this two bearing 12, pass these cover plate 16 set holes 161 with screw 162 again and lock screw 121 on the bearing 12, break away from pods 122 to prevent this axial region 621 and roller 64 so that cover plate 16 is fixing; Make the compression part 622 of pressing plate 62 be contacted with flange 31 ends of this hitching post 3 simultaneously.In addition again the Π shape perforative space of this limiting element 14 is covered in link driving element 6, and pass these limiting element 14 set holes 141 and lock screw 13 on the pedestal 1, in order to the moving range of restriction link driving element 6 on pedestal 1 with screw 142; That is under the state that link driving element 6 does not move,, limiting element 14 limits link driving element 6 at preposition by blocking the alar part 611 of link driving element 6.After link driving element 6 was located on the pedestal 1, the position at its pouring weight 63 places system was with respect to the eccentric position of this pedestal 1.Between pedestal 1 and link driving element 6, flexible member 15 is set again at last; In the present embodiment, flexible member 15 is an extension spring, its two end is respectively equipped with clasp, it is the groove 6110 that the clasp of its two end is buckled in this protruded stigma 123 and alar part 611 respectively, bestow pulling force by 15 pairs of link driving element 6 of this flexible member, and allow this link driving element 6 be in the precalculated position by aforesaid limiting element 14 blocks this alar part 611.

Above-mentioned device described in the utility model, when pedestal 1 in halted state or driven by motor and do not reach to a certain degree rotating speed so that centrifugal force when not enough, hitching post 3 will be subjected to the effect of flexible member 4 and make its end with respect to flange 31 maintain state in the post hole 11 of retraction pedestal 1, as shown in Figure 3; The pedestal 1 of this moment can freely rotate with impact block 51 mutually noninterferes, as shown in Figure 4.Arrive to a certain degree and when producing the centrifugal force of the pulling force that is enough to overcome

flexible member

15 and 4 and elastic force up to the rotating speed of pedestal 1, the body 61 of this link driving element 6 will move toward the outer direction of width of cloth directive because of action of centrifugal force, make the socket part 623 of connecting rod 612 plate dynamic pressure plates 62 and crush board 62 rotates, and then flange 31 ends that make compression part 622 promote hitching post 3, feasible hitching post 3 other ends with respect to this flange 31 stretch out post hole 11, as shown in Figure 5, thereby under the high speed rotation of pedestal 1, will make this hitching post 3 strike the recess 511 of impact block 51, as shown in Figure 6, and then make and put forward the powerful impulsive force that driving shaft 5 produces moment, thus, the sleeve that is matched with driving shaft 5 can unscrew bolt or the cap of locking very tightly apace, or revolves bolt or cap very tight during reverse rotation.

The above in order to explain preferred embodiment of the present utility model, is not that the utility model is done any pro forma restriction, so any modification or the change of all relevant utility models all must be included in protection domain of the present utility model only.

Claims

1. the centrifugal device of an electric tool, be to be provided with a main shaft and a driving shaft at a pedestal, and this pedestal is fixed in this main shaft system, and this driving shaft is positioned at the opposite side of pedestal, and driving shaft is combined with impact block, and the seat pedestal is provided with a post hole, Yu Zhukong is equipped with a hitching post, pedestal is provided with centrifugal device, and this centrifugal device is connected with in hitching post, it is characterized in that:

Centrifugal device system includes:

One link driving element, its body is provided with pouring weight, and has extended connecting rod in this body, and this link driving element system is located at aforesaid pedestal, and makes this pouring weight system relatively and the eccentric position of this pedestal, and this link driving element is provided with flexible member between this pedestal;

One pressing plate is to be hubbed at aforesaid pedestal and to touch aforesaid hitching post end, and is subjected to aforesaid link driving element interlock;

One limiting element is to be located on this pedestal, in order to limit the moving range of this link driving element at this pedestal;

Be provided with flexible member between aforesaid hitching post and the pedestal, make the post hole of this pedestal of end retraction of this hitching post by the elastic force of this flexible member.

2. by the centrifugal device of the described electric tool of claim 1, it is characterized in that: the connecting rod of aforementioned link driving element is provided with breach, and aforesaid pressing plate is formed with socket part, and this socket part is matched with in the breach.

3. by the centrifugal device of claim 1 or 2 described electric tools, it is characterized in that: aforesaid pedestal is provided with two and is corresponding bearing, and aforesaid pressing plate is articulated in this two bearing.

4. by the centrifugal device of the described electric tool of claim 3, it is characterized in that: this bearing is provided with pod, and aforesaid pressing plate is provided with the axial region that is positioned at relative two sides, this axial region is located in this pod and this pressing plate is articulated in this bearing.

5. by the centrifugal device of the described electric tool of claim 4, it is characterized in that: this axial region is provided with roller, and this axial region and covers cover plate in this bearing in this roller is inserted this pod.

6. press the centrifugal device of the described electric tool of claim 4, it is characterized in that: this pressing plate is the one-body molded L shaped shape that is, the end that this is L shaped also is made as the socket part of the breach that can be contained in aforementioned connecting rod, and this L shaped other end is as compression part, and relative two sides of the vertical edges that it is L shaped then form aforesaid axial region.

7. press the centrifugal device of the described electric tool of claim 3, it is characterized in that: relative two sides of the body of this link driving element are respectively equipped with an alar part, this alar part also is provided with groove, and this bearing is provided with protruded stigma in addition, aforesaid flexible member two ends is combined in groove and this protruded stigma of this alar part respectively.

8. by the centrifugal device of the described electric tool of claim 7, it is characterized in that: this flexible member is an extension spring.

9. press the centrifugal device of the described electric tool of claim 1, it is characterized in that: aforesaid limiting element is that one is bent into the perforative space with Π shape, just aforesaid link driving element is passed this Π shape perforative space, and this limiting element is fixed on aforesaid pedestal.

10. press the centrifugal device of the described electric tool of claim 1, it is characterized in that: aforesaid hitching post one end is provided with flange, and aforesaid flexible member is the compression spring, this flexible member is placed in hitching post and hitching post is penetrated the post hole of aforementioned pedestal, make two ends of this flexible member be butted on flange and pedestal respectively.