CN101971279B

CN101971279B - Electrical apparatus such as a switch

Info

Publication number: CN101971279B
Application number: CN200880118076.7A
Authority: CN
Inventors: T·贝莱; M·达科尔; J-N·纪尧姆; F·阿斯霍尔德; E·马内罗
Original assignee: Legrand SNC; Legrand France SA
Current assignee: Legrand SNC; Legrand France SA
Priority date: 2007-11-27
Filing date: 2008-11-27
Publication date: 2013-09-04
Anticipated expiration: 2028-11-27
Also published as: WO2009098397A2; EP2232516B1; CN101971279A; WO2009098397A3; FR2924266A1; FR2924266B1; BRPI0819033A2; EP2232516A2; MA31908B1; ES2606390T3

Abstract

Electrical apparatus comprises a first connection terminal (21A, 21B), a fixed contact (4A, 4B) connected electrically to said first connection terminal (21A, 21B), a second connection terminal, a movable contact (5), a conductive wiper (40) which carries said movable contact (5) and is connected electrically to said second connection terminal, a spring component for urging said wiper (40) towards either of two stable positions, specifically a conducting position in which said movable contact (5) is on the said fixed contact (4A, 4B) and an isolating position in which said movable contact (5) is not on the said fixed contact (4A, 4B), and a control member (60) connected mechanically to said conducting wiper (40); a fluid viscous substance (57B) being sandwiched between said fixed wall (12B) and said movable wall (69B) in each of said conducting and isolating positions as well as in each intermediate position between the latter.

Description

The electric equipment of switch for example

Technical field

The present invention relates generally to electric equipment, the electric equipment of the type comprises: first terminals; Be electrically connected to the fixed contact of described first terminals; Second terminals; Movable contact; Have described movable contact and be electrically connected to described second terminals conduction brush (balai conducteur), be used for actuating or another the flexible member that described conduction brush is shifted to two stable positions, described two stable positions are respectively a conductive site and an off position, at the described movable contact of this conductive site described fixed contact that reclines, separate a distance at the described movable contact of described off position and described fixed contact; And mechanical link is to the control member of described conduction brush.

Background technology

Especially from French Patent (FRP) FR2,564,234 and FR2,606,208 have known such electric equipment.

When operation, these electric equipments almost invariably are the generation sources that is harmful to the noise of amenity.

In brief, noise has just produced when the movable contact bump is gone up fixed contact, and this is to produce suddenly actually.Therefore this causes promptly passing to the strong or weak noise of the other parts of this equipment.

In order to reduce the noise of generation like this, French Patent (FRP) FR2,698,719 propose to arrange the leg of an elastically deformable, this leg guarantee movable contact enter with the fixed contact bump before temporarily braked.

Summary of the invention

The present invention is intended to further improve the comfort of this equipment.

For this reason, the present invention proposes a kind of electric equipment that comprises as the lower part:

-the first terminals;

-be electrically connected to the fixed contact of described first terminals;

-the second terminals;

-movable contact;

-have described movable contact and be electrically connected to the conduction brush of described second terminals;

-be used for impelling described conduction brush to shift to one or another flexible member of two stable positions, described two stable positions are respectively a conductive site and an off position, at the described movable contact of the described conductive site described fixed contact that reclines, separate a distance at the described movable contact of described off position and described fixed contact; And

-mechanical link arrives the control member of described conduction brush,

This electric equipment is characterised in that described electric equipment also comprises:

-fixation wall;

One is mechanically connected to the removable wall of described conduction brush, and described fixation wall and described removable wall are arranged for when described conduction brush from described conductive site and off position shifts to another, are prompted to carry out relative motion; And

-in each of described conductive site and off position and in each centre position of between, be interposed in the viscous fluid material between described fixation wall and the described removable wall.

This viscous fluid material makes the closing speed appropriateness of movable contact, thereby can slow down the impact between movable contact and the fixed contact, this upsprings with regard to the anything unexpected of having been avoided movable contact, and this accident is upspring to produce potentially and caused contact because of little molten electric arc that damages.

This impact slows down the noise that has also caused slowing down greatly generation, more generally causes both dexterous and comfortable especially operations stably.

Have, the advantage of the buffering that is produced by the viscous fluid material is not influence in conductive site applied pressure between fixed contact and movable contact again.In fact, in the position of this stop, movable contact is motionless (0 speed), no longer includes the action that any fluid friction power can be disturbed flexible member.

Usually, this fluid friction power is proportional in the fixation wall that inserts and puts this flowing material and the removable wall minimum one surface area values, the dynamic viscosity of flowing material and the speed of related movement between this two walls, and be inversely proportional to described two walls distance each other, according to the restoring force of spring and the stationarity of relevant operation these parameters are selected.

According to preferable feature, for make and use simple and convenient:

-in each of described conductive site and off position and in each centre position of between, the viscous fluid material soaks into the surface of described fixation wall and the surface of described removable wall, and the surface of described fixation wall is relative and the spacing of spaced constant with the surface of described removable wall;

The described surface of being soaked into of the described surface of being soaked into of-described fixation wall and described removable wall all is the plane;

The described surface of being soaked into of the described surface of being soaked into of-described fixation wall and described removable wall all is crooked;

-described electric equipment comprises groove that described viscous fluid material is housed and is immersed in blade in the described groove, in described groove and the described blade one comprise described fixation wall, and comprise described removable wall for another;

-described blade comprises described removable wall, and described groove comprises described fixation wall;

-described blade rigid is connected to the lateral member of described control member;

-described blade and described control member form a monomer spare;

-described groove comprises two walls, forms the first described fixation wall and the second described fixation wall respectively, arranges the described blade that comprises described removable wall between described fixation wall;

-described electric equipment also comprises the groove that another is similar except described groove, be furnished with another blade similar with described blade in described another similar groove;

-described groove and described another groove are disposed in the both sides of described control member; And/or

-described control member is a button, and this button forms a monomer spare with two described blades that are positioned at the both sides of described button, and each in the described blade all is immersed in other groove of branch that described viscous fluid material is housed.

Description of drawings

Now by to hereinafter as example and the detailed description of a unrestricted embodiment who provides, continue to describe the present invention, wherein:

-Fig. 1 is the perspective view according to the simplification of electric equipment of the present invention;

-Fig. 2 is the view similar with Fig. 1, but the part that is positioned at the V-V right side, plane is removed;

-Fig. 3 is the view similar with Fig. 1, and just the visual angle is slightly different, and wherein the remainder of control member and this electric equipment separates a distance;

-Fig. 4 is the perspective view of simplification of sub-assembly that comprises conduction brush and be hinged with the mounting of this conduction brush thereon;

-Fig. 5 and Fig. 6 are that the electric equipment of Fig. 1 is along the view of the simplification of being dissectd by the plane of V-V and VI-VI mark respectively;

-Fig. 7 is the enlarged drawing of the thin VII of portion of Fig. 6;

-Fig. 8 is the perspective view according to the simplification of the electric equipment of an enforcement modification of the present invention; And

-Fig. 9 is the enlarged perspective according to an element of the electric equipment of the enforcement modification of Fig. 8.

Embodiment

Be the switch of a duplex at the electric equipment 1 shown in Fig. 1 to Fig. 7, this switch comprises: be pivoted on button 60 on the housing 3, be arranged in the first fixed contact 4A (Fig. 5) on the housing 3, also be arranged on the housing 3 and be positioned at the first fixed contact 4A opposite the second fixed contact 4B and with button 60 rigidly connected movable contacts 5.

Movable contact 5 can alternately be in two stable positions:

-primary importance is at the recline first fixed contact 4A and separate a distance with the second fixed contact 4B of this primary importance movable contact; And

-in the second place shown in Fig. 5, at the recline second fixed contact 4B and separate a distance with the first fixed contact 4A of this second place movable contact.

Housing 3 comprises the antetheca 10 of the rectangle that totally is the plane, and this antetheca has depressed part 11 at central part.

This depressed part 11 by two relative

vertical wall

12A and 12B, two also be that relative

transverse wall

13A and 13B and diapire 14 define (Fig. 3).This totally is slightly less than the length of antetheca 10 for the length of the depressed part 11 of parallelepiped shape, and its width equals about 1/3 of same antetheca 10 width.

Vertically wall 12A (be 12B respectively) depressed part 11 on the contrary to prolonging (therefore giving prominence to from antetheca 10) by edge 15A (being 15B respectively).

Diapire 14 comprises core 16, and this core 16 is parallel to antetheca 10 layouts and comprises foursquare central recess 17.

Core 16 is prolonged by two

side direction parts

18 and 19 in both sides, and described two side direction part tilts and joins

transverse wall

13A and 13B respectively to along the direction opposite with antetheca 10.

Vertically

wall

12A, 12B and

transverse wall

13A, 13B are beyond

side direction part

18 and 19 places extend to depressed part 11, to hold

terminals

20,21A and 21B.

Terminals

20 and 21A are arranged side by side near the transverse wall 13A, and terminals 21B then is arranged in the opposite of terminals 21A and is arranged near the transverse wall 13B.

Housing 3 is also comprising a posterior elements 22 with core 16 vertical places.

This rear portion element 22 comprises two

wall

23A and 23B, and described two walls are parallel to

transverse wall

13A and 13B extension along

terminals

20,21A and 21B toward each other and respectively.

Two wall 23A and the 23B of element 22 are connected to each other by wall 24, and the core 16 that this wall 24 is parallel to diapire 14 extends.

For relevant conductor is connected rapidly,

terminals

20,21A and 21B are automatic insert type terminals, but in implementing modification, these terminals are dissimilar, for example are the terminals with hole and screw.

In the embodiment shown, terminals 20 are electrically connected to and button 60 rigidly connected movable contacts 5, and terminals 21A is electrically connected to fixed contact 4A, and terminals 21B then is connected to fixed contact 4B.Contact 4A and 4B are arranged in the both sides of movable contact 5 relative to one another, and recline respectively

wall

23A and 23B.

The fixed contact 4A (being 4B respectively) of an end that is positioned at the conductive strips 25A (respectively for 25B) of bending comprises contact pearl (grain de contact) 26A (being 26B respectively), and this contact pearl from then on conductive strips 25A (be 25B respectively) is given prominence to.

The other end of the conductive strips 25A of bending (being 25B respectively) is connected to terminals 21A (being 21B respectively).

Simple for the use that makes switch, remove or do not use 21A or 21B and corresponding fixed contact 4A or 4B in the terminals.

Metal mounting 30 (more specifically referring to Fig. 4) is arranged on the periphery of groove 17.Described mounting comprises two

triangular plate

31A and 31B, and described two triangular plates are arranged opposite to each other and are parallel to

vertical wall

12A and 12B extends towards the direction of antetheca 10.Each

triangular plate

31A and 31B comprise notch 32A, a 32B at its top.

This mounting 30 also comprises two

crossbeams

33 and 34 that are connected with second end with first end of the bottom of

triangular plate

31A and 31B respectively.

Crossbeam 33 is connected to tongue piece 35, and this tongue piece extends side direction part 18 against diapire 14 towards the direction of transverse wall 13A.The leg 36 that is planted in tongue piece 35 centers passes side direction part 18 and extends, until terminals 20 are connected to terminals 20 by welding or the described leg of mold pressing.

Bar 37 extends towards the direction of crossbeam 33 and diapire 14 from the core of crossbeam 34, and the far-end of bar 37 has notch 38.

The conduction brush 40 that includes flat (plat) of movable contact 5 is provided for being hinged with the mounting 30 of housing 3.

Conduction brush 40 comprises head 41, this head is provided with the notch 42 that protrudes from the convex shoulder 43, two

column

44A and 44B begin to extend towards the direction of depressed part 11 from this convex shoulder, the far-end of described two columns is engaged by herringbone rafter spare 45, and this herringbone rafter spare constitutes movable contact and its most advanced and sophisticated wall 24 that points to.Near the tip of herringbone rafter spare, herringbone rafter spare 45 all has contact pearl 46A, a 46B on its each face.Conduction brush 40 also comprises two

plush copper

47A and 47B, and described plush copper is two side-prominent and can cooperate with

notch

32A, 32B from convex shoulder 43, connects with respect to the pivot of mounting 30 in order to realize conduction brush 40.

Conduction brush 40 remains on the mounting 30 and guarantees that by spring 48 this spring comprises spiral helicine core, and from two side-prominent two hooks of this spiral helicine core, described two hooks engage with the notch 38 of bar 37 and the notch 42 of head 41 respectively.

In Fig. 4, spring 48 is in unsettled position, and the distance between these two hooks in unsettled position is maximum.In fact, this spring 48 tends to by conduction brush 40 is pivoted to take this conduction brush to primary importance or the second place, and be in more the position of withdrawal, in described primary importance, the contact pearl 46A of movable contact 5 electrically contacts with the pearl 26A that contacts of fixed contact 4A, and in the described second place, the contact pearl 46B of movable contact 5 electrically contacts (Fig. 5) with the pearl 26B that contacts of fixed contact 4B.

Two vertical wall 12A of depressed part 11 comprise two

outstanding groove

50A and 50B similar and that be arranged opposite to each other respectively with 12B.

Groove 50A (respectively for 50B) by vertical wall 12A (being 12B respectively), be parallel to vertical wall 51A (being 51B respectively) on the plane of lateral sidewall 12A (being 12B respectively), also be that the transverse wall 52A (being 52B respectively) on parallel two planes and the diapire 54A (being 54B respectively) on 53A (being 53B respectively) and plane define.

Groove 50A (being 50B respectively) with shape of parallelepiped along the core of lateral sidewall 12A (being 12B respectively), extends from the free end of edge 15A (being 15B respectively) and towards the direction of diapire 14.

Inwall 51A (being 51B respectively) comprises the central recess 56A (being 56B respectively) of rectangle at its free end 55A (being 55B respectively) that is positioned at antetheca 10 places.

Groove 50A (being 50B respectively) is equipped with a certain amount of viscous fluid material 57A (being 57B respectively), for example grease and silicone grease.This material 57A (respectively for 57B) has sufficiently high dynamic viscosity, makes how no matter this material can not flow out from

groove

50A and 50B towards in the space of groove yet.Material 57A (being identical with material 57B here) is more stable in time, so that its viscosity keeps constant or almost constant in the lifetime of this electric equipment 1, and this has nothing to do with the mechanical load that is applied on the described viscous fluid material.

Button 60 comprises

end wall

62A, 62B and recessed slightly plate 63 of

vertical wall

61A, 61B two planes and parallel to each other, two bendings respect to one another.Vertical wall 61A (being 61B respectively) heart portion therein comprises a slit (invisible in the figure that execution mode is relevant therewith, but similar with the slit 64B ' of the enforcement modification shown in Fig. 9, it will be described below).The direction of this slit from its free edge 65A (being 65B respectively) towards plate 63 extends on half of about its width.

Extend two

lateral member

66A and 66B from the both sides of button 60.

Lateral member 66A (being 66B respectively) comprises the wall 67A (being 67B respectively) with semi-circular cross-section, this wall is planted on the outer surface of vertical wall 61A (being 61B respectively) at the place, the inner of slit 64B, and transverse to vertically wall 61A (being 61B respectively) extension.

Lateral member 66A (respectively for 66B) also comprises blade 68A (being 68B respectively), and this blade is parallel to vertical wall 61A (being 61B respectively) from the far-end of wall 67A (being 67B respectively) with semi-circular cross-section and extends.This blade 68A (being 68B respectively) comprises wall 69A (being 69B respectively), and the thickness of described wall is slightly smaller than the insied width of groove 50A (being 50B respectively).

Special in seeing in Fig. 5, wall 69B comprises two part 70B and 71B.That part 70B has is triangular in shape, be the profile of isosceles triangle herein, and extends towards the direction of the free edge 65B of vertical wall 61B.The top 72B of this leg-of-mutton 70B of first and the far-end of wall 67B are integrated, and its bottom 73B then is parallel to free edge 65B.

The second portion 71B of profile with semi-disc extends from the center of the bottom 73B of the leg-of-mutton 70B of first towards the opposite direction of top 72B of same leg-of-mutton part 70B therewith.

Wall 69A and wall 69B are similar.

The slit that is inserted into

vertical wall

61A, 61B by the convex shoulder 43 with conduction brush 40 for example makes button 60 in place on housing 3 up to stop position among the 64B '.

Simultaneously, blade 68A (being 68B respectively) enters into groove 50A (being 50B respectively) and is immersed in viscous fluid material 57A (being 57B respectively).

In case install to finish, the inner surface of plate 63 is positioned near the head 41 of conduction brush 40, and the wall 67A (being 67B respectively) with semi-circular cross-section is positioned at the rectangular recess 56A (being 56B respectively) of inwall 51A (being 51B respectively) and locates.

As for blade 68A (being 68B respectively), it almost entirely is immersed among the groove 50A (being 50B respectively), contacts with viscous fluid material 57A (being 57B respectively).

When button 60 from two stable positions shifted to another, blade 68A (being 68B respectively) was between these two vertical walls of vertical wall 51A (being 50B respectively) of vertically wall 12A (being 12B respectively) and groove 50A (being 50B respectively) and be parallel to described two vertical wall shifts and move.

Each side from wall 69A (being 69B respectively), for each and some centre position in two stable positions, viscous fluid material 57A (being 57B respectively) cubical content be sandwiched between this wall and on the one hand vertically between the wall 12A (being 12B respectively) and should and on the other hand between vertical wall 51A (51B respectively).

As clearly visible in Fig. 7, a certain amount of viscous fluid material 57B is positioned between vertical wall 12B (being 51B respectively) and the wall 69B, soaked into the surperficial 76B (being 78B respectively) of the face of the surperficial 75B (being 77B respectively) of inner face of this vertical wall 12B (being 51B respectively) and the wall 69B relative with surperficial 75B (being 77B respectively), the spacing maintenance constant between these two surperficial 75B (be 77B respectively) and the 76B (being 78B respectively).

When blade 68B moves in groove 50B, with by the surperficial 75B that soaked into (being 77B respectively) fluid in contact material 57B layer and, apply fluid friction power each other with the surperficial 76B that is soaked into (being 78B respectively) fluid in contact material 57B layer.

The surperficial 76B that the quilt that this fluid friction power is proportional to blade 68B soaks into (being 78B respectively) area, the viscosity of viscous fluid material 57B and the speed of blade 68B are inversely proportional to the distance between the surface of being soaked into.

By suffix " A " is replaced with " B ", the explanation of carrying out for the blade 68B of proof Fig. 7 just also is applicable to blade 68A.

Because fluid friction power, make

blade

68A and 68B, so button 60, conduction brush 40 and movable contact 5 translational speed under the effect of spring 48 keeps appropriateness, thereby the use of switch is comfortable especially.

Be similar with the switch 1 ' shown in Fig. 9 to switch 1 at Fig. 8, just the lateral member of button is different with the shape of groove.Below and in the accompanying drawings, keep identical Reference numeral and represent components identical, add then that for similar element one is cast aside " ' ".

Blade 68B ' comprises the part 80B ' with rectangular profile, and this part 80B ' is parallel to vertical wall 61B ' extension towards the direction of free edge 65B '.Blade 68B ' also comprises crooked plate 81B ', and this crooked plate is planted in the far-end of the part 80B ' with rectangular profile, and along extending transverse to the part 80B ' that this has rectangular profile in the opposite direction with button 60 ' side.

Groove 50B ' has big width holding plate 81B ', and its diapire is introversion, and is coated with the viscous fluid material.

Length to part 80B ' with rectangular profile is selected, and makes in case finish to install, and plate 81B ' contacts with the viscous fluid material near being located in the diapire of groove 50B '.

When another stable position was shifted in the stable position of button 60B ' from two stable positions, plate 81B ' drew pendular motion.

Therefore in two stable positions each and in each centre position of between, a certain amount of viscous fluid material is interposed between the plate 81B ' of the diapire of groove 50B ' and blade 68B '.

This a certain amount of viscous fluid material soaked into groove 50B ' diapire inner face the surface and be positioned at the surface of plate 81B ' face on the surperficial opposite of groove 50B ' diapire inner face, the spacing between these two surfaces keeps constant.

In an enforcement modification that does not illustrate, blade 68A (respectively for 68B) (fully as the same with its rigidly connected button 60) presents irrotational rectilinear motion.

In the enforcement modification that another does not illustrate, be connected versatilely with button such as 60 such as the groove of 50A or 50B, then fix such as the blade of 68A or 68B.

In the other enforcement modification that does not illustrate---wherein, the restoring force of 48 spring big (or less) for example:

-make the groove of for example 50A, 50B and the size of for example blade of 68A, 68B strengthen (or reducing), to increase (or reducing) for example area on the surface soaked into of the quilt of 75B, 76B, increase the fluid friction power that (or reducing) produces thus;

-increase (or reducing) is the degree of depth and for example length of the blade of 68A, 68B of the groove of 50A, 50B for example, so that the part that

blade

68A, 68B contact with the viscous fluid material of for example 57A, 57B is away from (or close) rotating shaft of 60 button for example, so increase (or reducing) for example speed of the quilt of the blade of 68A, the 68B part of soaking into, thereby increase the fluid friction power that (or reducing) produces; And/or

-for example making, the viscous fluid material of 57A, 57B has the dynamic viscosity of big (or less), the fluid friction power that makes increase (or reducing) generation.

In the enforcement modification that another does not illustrate, this electric equipment and switch, for example remote control switch are different.

Certainly, according to circumstances, it also is feasible that many other implemented modification, to note in this regard the invention is not restricted to describe with shown in example.

Claims

1. electric equipment, it comprises:

-the first terminals (21A, 21B);

-be electrically connected to the fixed contact (4A, 4B) of described first terminals (21A, 21B);

-the second terminals (20);

-movable contact (5);

-have described movable contact (5) and be electrically connected to the conduction brush (40) of described second terminals (20);

-be used for impelling described conduction brush (40) to shift to one or another flexible member (48) of two stable positions, described two stable positions are respectively a conductive site and an off position, at the described movable contact of described conductive site (5) the described fixed contact (4A, 4B) that reclines, separate a distance at the described movable contact of described off position (5) and described fixed contact (4A, 4B); And

-be mechanically connected to the control member (60) of described conduction brush (40),

It is characterized in that described electric equipment also comprises:

-fixation wall (12A, 12B, 51A, 51B);

-be mechanically connected to the removable wall (69A, 69B, 81B ') of described conduction brush (40), described fixation wall (12A, 12B, 51A, 51B) and described removable wall (69A, 69B, 81B ') are arranged for when described conduction brush (40) from described conductive site and off position shifts to another, are prompted to carry out relative motion; And

In-each centre position in each of described conductive site and off position and between described conductive site and off position, be interposed in the viscous fluid material (57A, 57B) between described fixation wall (12A, 12B, 51A, 51B) and the described removable wall (69A, 69B, 81B ').

2. according to the described electric equipment of claim 1, it is characterized in that, in each centre position in described conductive site and off position each and between described conductive site and off position, described viscous fluid material (57A, 57B) soaks into the surface (75B, 77B) of described fixation wall (12A, 12B, 51A, 51B) and a surface (76B, 78B) of described removable wall (69A, 69B), and the surface that the quilt of described fixation wall soaks into is that face mutually each other and the spacing of spaced constant with the surface that the quilt of described removable wall soaks into.

3. according to the described electric equipment of claim 2, it is characterized in that the described surface of being soaked into (75B, 77B) of described fixation wall (12A, 12B, 51A, 51B) and the described surface of being soaked into (76B, 78B) of described removable wall (69A, 69B) all are the planes.

4. according to the described electric equipment of claim 2, it is characterized in that the described surface of being soaked into of the described surface of being soaked into of described fixation wall and described removable wall (81B ') all is crooked.

5. according to each described electric equipment in the claim 1 to 4, it is characterized in that, described electric equipment comprises the groove (50A, 50B, 50B ') that described viscous fluid material (57A, 57B) is housed and is immersed in blade (68A, 68B, 68B ') in the described groove (50A, 50B, 50B '), described groove (50A, 50B, 50B ') comprises described removable wall (69A, 69B, 81B '), and described blade (68A, 68B, 68B ') comprises described fixation wall (12A, 12B, 51A, 51B).

6. according to each described electric equipment in the claim 1 to 4, it is characterized in that, described electric equipment comprises the groove (50A, 50B, 50B ') that described viscous fluid material (57A, 57B) is housed and is immersed in blade (68A, 68B, 68B ') in the described groove (50A, 50B, 50B '), described blade (68A, 68B, 68B ') comprises described removable wall (69A, 69B, 81B '), and described groove (50A, 50B, 50B ') comprises described fixation wall (12A, 12B, 51A, 51B).

7. according to the described electric equipment of claim 6, it is characterized in that described blade (68A, 68B, 68B ') is rigidly connected to the lateral member (67A, 67B) of described control member (60).

8. according to the described electric equipment of claim 7, it is characterized in that described blade (68A, 68B, 68B ') forms a monomer spare with described control member (60).

9. according to the described electric equipment of claim 6, it is characterized in that, described groove (50A, 50B) comprises two walls (12A, 12B, 51A, 51B), these two walls form the first described fixation wall (12A, 12B) and the second described fixation wall (51A, 51B) respectively, arrange the described blade (68A, 68B) that comprises described removable wall (69A, 69B) between described fixation wall.

10. according to the described electric equipment of claim 9, it is characterized in that, described electric equipment also comprises similar another groove (50B) except described groove (50A), be furnished with another blade (68B) similar with described blade (68A) in similar described another groove.

11., it is characterized in that described groove (50A) and described another groove (50B) are disposed in the both sides of described control member (60) according to the described electric equipment of claim 10.

12. according to the described electric equipment of claim 11, it is characterized in that, described control member is a button (60), this button forms a monomer spare with two described blades (68A, 68B) of the both sides that are positioned at described button (60), and each in the described blade (68A, 68B) all is immersed in the corresponding groove (50A, 50B) that described viscous fluid material (57A, 57B) is housed.