CN2463111Y

CN2463111Y - Dust-proof protecting cover with scissors linkage system

Info

Publication number: CN2463111Y
Application number: CN 01201946
Authority: CN
Inventors: 吴义均
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-02-02
Filing date: 2001-02-02
Publication date: 2001-12-05
Anticipated expiration: 2011-02-02

Abstract

The utility model relates to a dust-proof protective cover with a scissor type linkage device, which comprises a plurality of protective cover plates and a linkage device, wherein a plurality of protective cover plates are orderly sheathed with each other, the shapes of the protective cover plates are the same, and the dimensions are degressive; the bottom face of each protective cover plate is provided with a sliding slot; the linkage device is composed of a plurality of connecting rod units, and each connecting rod unit is provided with two rod members of equal lengths; the two rod members are mutually pivoted at a midpoint thereof so that both ends of the two rod members are respectively formed into a pair of open-close arms. The two open-close arms at each edge of each connecting rod unit are mutually pivoted with the two open-close arms of the other connecting rod unit to form two pivoting points, wherein one pivoting point is correspondingly pivoted at the bottom face of one protective cover plate, and the other pivoting point is sheathed in the sliding slot of the same protective cover plate.

Description

The dustproof protecting cover of tool scissors linkage

The utility model is that the dustproof protecting cover of using with work implements is relevant, particularly a kind of dustproof protecting cover of tool scissors linkage.

Press, the dustproof protecting cover of commonly using is depicted as the innovation structure of creator in a kind of dustproof holding protective cover device of previous proposition as figure l, and it is on record to have patented already, and it mainly is to be equiped with a chute 11 in protecting cover plate 10 bottom surfaces in this case; One parallel rod device 12, formed by some X-shaped linkage units, respectively this linkage unit has two isometric rod members, this two rod member articulates two ends that make this two rod member mutually with its midpoint and forms a pair of folding arm respectively, the two folding arms on each each limit of linkage unit articulate and form two pivoting points 13 mutually with two folding arms of another linkage unit again, this two pivoting point then correspondence is sheathed in the chute 11, and can be along the major axis of this chute to slippage with the effect of reaching this creation (detailed construction and see also this patent case specification, do not give unnecessary details) in this appearance as flowing mode.Though the properties of product that the effect of this patent case is commonly used are good, stability is high but still have it not attain to improve part, be for to make each pivoting point 13 can be in chute 11 slippage smoothly then the gap between this pivoting point and chute also just must broad, both mechanically the demand of so-called (LiberalAllowance) loose nargin was understood broad, and such space can allow each pivoting point enough produce the beat of vacillating in chute, and because the two pivoting points beat separately in each chute, or be flapped toward the side of this center line C simultaneously or be flapped toward the both sides of center line C as shown in Figure 2 respectively, therefore there are two beat volume productions to give birth in the time of can making its beat, again, dustproof protecting cover is a product that precision requirement is quite high, such beat deformation can produce certain influence to the smooth degree of the whole start of dustproof protecting cover, and in order to reduce the angle of its beat, make the dustproof protecting cover can be more smooth and easy when stretching, extension folds, error is littler, so the utility model people several times thinks deeply research and development proposition the utility model " the dustproof protecting cover of tool scissors linkage ".

The purpose of this utility model is at the dustproof protecting cover that a kind of tool scissors linkage is provided, and it can reduce protecting cover plate deflection angle.

In order to achieve the above object, the dustproof protecting cover of a kind of tool scissors linkage provided by the utility model includes: several shapes are identical but protecting cover plate socket in regular turn that size is successively decreased, make it form a structure that can axially stretch along, fold, vertical its start in these protecting cover plate bottom surfaces axially respectively be provided with at least one chute; At least one linkage, formed by some linkage units, respectively this linkage unit has two isometric rod members, this two rod member articulates two ends that make this linkage unit mutually with its midpoint and forms a pair of folding arm respectively, the two folding arms on each each limit of linkage unit articulate and form two pivoting points mutually with two folding arms of another linkage unit again, wherein a pivoting point is that correspondence is hubbed at a protecting cover plate bottom surface, another pivoting point then is sheathed in the chute of this protecting cover plate, should stretch the linkage of condensation by dustproof protecting cover but constitute an interlock with this.

Wherein each protecting cover plate also is provided with a pin joint seat, and this plug is to be located at this pin joint seat and to articulate with the protecting cover plate.

Wherein each protecting cover plate respectively has a top part, two side portion and a backboard portion, and this chute and this pin joint seat are the root edges of being located at backboard portion.

Purpose, effect and the feature of below lifting a preferred embodiment now and cooperating graphic explanation the utility model to be reached, wherein:

Fig. 1 is the bottom view of the innovation structure of the dustproof holding protective cover device of case before the patent.

Fig. 2 is the deflection angle schematic diagram of this chute and pivoting point among Fig. 1.

Fig. 3 is a bottom view of the present utility model;

Stereogram of bottom view when Fig. 4 is the utility model stretching, extension;

Stereogram of bottom view when Fig. 5 is the utility model condensation;

The general same Fig. 2 of Fig. 6 is the angle schematic diagram of the utility model chute and plug articulated section.

Please refer to Fig. 3, the dustproof protecting cover 20 of a kind of tool scissors linkage provided by the utility model includes:

Six shape is identical but protecting cover plate 30 socket in regular turn that size is successively decreased makes it form a structure that can axially stretch along, fold, and each protecting cover plate respectively has a top part 31, two side portion 32 and a backboard portion 33, and is identical with the person of commonly using.

Each protecting cover plate 30 is provided with:

One chute 40 is an elongate slots, vertically should stretch the axial of condensation by dustproof protecting cover 20, is located at the root edge of protecting cover backboard board 33.

One pin joint seat 50 is a projection, is located at the root edge of protecting cover backboard board, with this chute 40 distances one preset space length.

Should more be provided with by dustproof protecting cover:

One linkage 60, formed by five linkage units 61, each linkage unit is made of two isometric rod members, each articulates this two rod member mutually with its mid point, make this linkage unit become X-shaped and form a pair of folding arm 62 respectively in its two end, and can this pivoting point be the mutual folding in axle center, the folding arm at each X-shaped linkage unit two ends then articulates with the folding arm of other two linkage units respectively again, and be inserted with a plug 63 in its articulated section, 64, to form the structure of an extensible condensation, corresponding respectively being sheathed in the chute 40 of a protecting cover plate 30 of plug 63 with this linkage the same side, make this plug can be along the major axis of this chute to slippage, be arranged at the respectively pin joint seat 50 of this protecting cover plate 30 with the plug 64 of opposite side is corresponding respectively again, should stretch by dustproof protecting cover but articulate so continuously to form an interlock, the serial verb construction of condensation.

With above-mentioned structure, dustproof protecting cover 20 of the present utility model is the phase closing by each linkage unit 61 folding arm when stretching, the plug 63 that one side is sheathed in the chute 40 is drawn close along this chute slippage and to the plug 64 that opposite side is articulated in the protecting cover plate, push away with interlock each protecting cover plate is axially stretched along one, and reach the action of stretching, extension, as shown in Figure 3.Then be by the opening of linkage 60 each linkage unit 61 folding arm when dustproof protecting cover 20 is desired condensations, make plug in the chute along this chute slippage and reach the action of condensation away from the plug that a side articulates retracts each protecting cover plate with interlock, as shown in Figure 4.And owing to be plug 64 pivot joints with a side when linkage unit of linkage is connected with this protecting cover plate in the utility model, therefore, though its (Liberal Allowance) loose nargin was identical with the person of commonly using but be to be sheathed in the chute owing to only the plug 63 of a side being arranged when the utility model chute 40 cooperated with this plug 63, opposite side plug 64 then is not install in the mode that articulates to produce beat, so, as Fig. 5, shown in Figure 6, the generation of a beat amount when cooperating with this chute, this plug 63 only can be arranged, with this, the utility model just can significantly improve the problem of dustproof protecting cover beat of integral body when start, reaches the creation purpose of smooth and easy dustproof protecting cover action.

Claims

1. the dustproof protecting cover of a tool scissors linkage comprises:

Several shapes are identical but protecting cover plate socket in regular turn that size is successively decreased makes it form a structure that can axially stretch along, fold, it is characterized in that, these protecting cover plate bottom surfaces vertically dustproof protecting cover start axially respectively be provided with at least one chute;

At least one linkage, formed by some linkage units, respectively this linkage unit has two isometric rod members, this two rod member articulates two ends that make this linkage unit mutually with its midpoint and forms a pair of folding arm respectively, the two folding arms on each each limit of linkage unit articulate and form two pivoting points mutually with two folding arms of another linkage unit again, and be inserted with a plug in the pivoting point place, and wherein a plug is to be hubbed at a protecting cover plate, another plug is then corresponding to be sheathed in the chute of this protecting cover plate.

2. according to the dustproof protecting cover of the described tool scissors of claim 1 linkage, it is characterized in that wherein each protecting cover plate also is provided with a pin joint seat, this plug is to be located at this pin joint seat and to articulate with the protecting cover plate.

3. according to the dustproof protecting cover of the described tool scissors of claim 2 linkage, it is characterized in that wherein each protecting cover plate respectively has a top part, two side portion and a backboard portion, this chute and this pin joint seat are the root edges of being located at backboard portion.