CN103456568A - Electromagnetic relay - Google Patents
Electromagnetic relay Download PDFInfo
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- CN103456568A CN103456568A CN2013102146766A CN201310214676A CN103456568A CN 103456568 A CN103456568 A CN 103456568A CN 2013102146766 A CN2013102146766 A CN 2013102146766A CN 201310214676 A CN201310214676 A CN 201310214676A CN 103456568 A CN103456568 A CN 103456568A
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- moving contact
- maintaining part
- contact
- electric arc
- electromagnetic relay
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Abstract
The invention provides an electromagnetic relay which can further improve the reliability of a contact point. The electromagnetic relay (1) comprises an armature (16) which swings through the excitation and non-excitation of an electromagnet assembly (10), a movable contact point part (21) which includes a movable spring (24) having a pair of (a plurality of) movable contact points (21a, 21a) and is disposed at the armature (16) and swings along with the swinging of the armature (16), a fixed contact point part (22) which comprises fixed contact points (22a, 22a) contacting with or separating from the movable contact points (21a, 21a). The movable spring (24) comprises a first retaining part (24A) of a first movable contact point (21a), a second retaining part (24B) which is separated from the first retaining part (24A) and is provided with a second movable contact point (21a), and a connecting part (24C) which connects the first retaining part (24A) and the second retaining part (24B). The first retaining part (24A) freely moves with respect to the second retaining part (24B).
Description
Technical field
The present invention relates to electromagnetic relay.
Background technology
As existing electromagnetic relay, known have an electromagnetic relay described as follows, and it possesses: armature, and its excitation by electromagnet assembly, non-excitation are swung; Moving contact section, it possesses the moving contact plate (moving contact maintaining part) that is provided with a pair of moving contact, and follows the swing of armature and swung; Fixed contact section, it has the pair of fixed contacts (for example,, with reference to patent documentation 1) that contacts or separate with moving contact.
[patent documentation 1] TOHKEMY 2010-123545 communique
Yet, in above-mentioned prior art, form the structure at upper a pair of moving contact one body action arranged of moving contact plate (moving contact maintaining part).Therefore, deposited if the contact of a side (moving contact and fixed contact) occurs, possibly can't make the contact (moving contact and fixed contact) of opposite side contact.Therefore, can be detrimental to reliability of contact.
Summary of the invention
Therefore, the object of the invention is to obtain further improving the electromagnetic relay of reliability of contact.
To achieve these goals, the purport of First Characteristic of the present invention is, described electromagnetic relay possesses: armature, and its excitation by electromagnet assembly, non-excitation are swung; Moving contact section, it possesses the moving contact maintaining part that is provided with a plurality of moving contacts, and is installed on described armature and follows the swing of this armature to be swung; Fixed contact section, it has the fixed contact that contacts or separate with described moving contact, described moving contact maintaining part possess the first maintaining part of being provided with the first moving contact, with described the first retaining part from and be provided with the second moving contact the second maintaining part, will described the first maintaining part and the linking part of described the second maintaining part link, described the first maintaining part is configured to respect to described the second maintaining part and relatively moves freely.
The purport of Second Characteristic is, described moving contact maintaining part be formed with make described the first maintaining part and described the second retaining part from slit.
The purport of the 3rd feature is, described moving contact maintaining part consists of elastomer.
The purport of the 4th feature is, described the first moving contact and the second moving contact are arranged on an end of described moving contact maintaining part, and described linking part is arranged on the other end of described moving contact maintaining part.
The purport of the 5th feature is, described moving contact section possesses fixed part, this fixed part is to configure with the overlapping mode of at least described linking part of described moving contact maintaining part, and with the leading section of this linking part, engage, the either party in described moving contact maintaining part and the overlapping opposed faces of described fixed part is provided with protuberance.
The purport of the 6th feature is, described protuberance is arranged on the end of leading section side opposition side in described opposed faces and described linking part.
The purport of the 7th feature is, described fixed part extends and is set to and described first maintaining part of described moving contact maintaining part and the overlapping position of the second maintaining part.
The purport of the 8th feature is, it is circular-arc that described protuberance forms section.
[invention effect]
According to the present invention, because being configured to respect to the second maintaining part, the first maintaining part relatively moves freely, therefore the first maintaining part that is provided with the first moving contact can independently be moved respectively with the second maintaining part that is provided with the second moving contact, can further improve reliability of contact.
The accompanying drawing explanation
Fig. 1 means the front view of the electromagnetic relay that the first execution mode of the present invention relates to.
Fig. 2 means the stereogram of the cover of the electromagnetic relay that the first execution mode of the present invention relates to.
Fig. 3 means the stereogram of the state after the cover of the electromagnetic relay that the first execution mode of the present invention is related to is removed.
Fig. 4 is the A-A cutaway view of Fig. 1.
Fig. 5 means the stereogram of the state after the local removal of the magnetic screen yoke of Fig. 3 and electric arc extinguishing arc section.
Fig. 6 means the figure after the part of the electromagnetic relay that the first execution mode of the present invention is related to is removed, and means the stereogram of moving contact section and fixed contact section.
Fig. 7 is the B-B cutaway view of Fig. 4.
Fig. 8 means the figure of the moving contact maintaining part that the first execution mode of the present invention relates to, and (a) is stereogram, (b) means the independently key diagram of action of moving contact.
Fig. 9 means the figure of existing moving contact maintaining part, is (a) stereogram, (b) means the key diagram of action of the one of moving contact.
Figure 10 means the figure of the first variation of the moving contact maintaining part that the first execution mode of the present invention relates to.
Figure 11 means the figure of the second variation of the moving contact maintaining part that the first execution mode of the present invention relates to.
Figure 12 means the figure of the 3rd variation of the moving contact maintaining part that the first execution mode of the present invention relates to.
Figure 13 is the longitudinal sectional view of the electromagnetic relay that relates to of the second execution mode of the present invention.
Figure 14 is the longitudinal sectional view of the electromagnetic relay that relates to of the 3rd execution mode of the present invention.
Figure 15 is the longitudinal sectional view of the electromagnetic relay that relates to of the 4th execution mode of the present invention.
Figure 16 is the longitudinal sectional view of the electromagnetic relay that relates to of the 5th execution mode of the present invention.
Figure 17 is the longitudinal sectional view of the electromagnetic relay that relates to of the 6th execution mode of the present invention.
Figure 18 means the figure of the moving contact maintaining part of the electromagnetic relay that the 7th execution mode of the present invention relates to, and (a) is end view, is (b) front view.
Figure 19 means the figure of the action of the moving contact maintaining part shown in Figure 18, (a) figure of the action while meaning the connection (ON) that moving contact is contacted with fixed contact, the figure of the action while (b) meaning the disconnection (OFF) that moving contact is separated with fixed contact.
Figure 20 means the figure of the moving contact maintaining part of the electromagnetic relay that the 8th execution mode of the present invention relates to, and (a) is end view, is (b) front view.
Figure 21 means the figure of the moving contact maintaining part of the electromagnetic relay that the 9th execution mode of the present invention relates to, and (a) is end view, is (b) front view.
[symbol description]
1 electromagnetic relay
10 electromagnet assemblies
16 armature
20,20A protuberance
21 moving contact sections
21a moving contact (the first moving contact, the second moving contact)
22 fixed contact sections
The 22a fixed contact
24 fluid springs (moving contact maintaining part)
24A the first maintaining part
24B the second maintaining part
The 24C linking part
28 slits
Embodiment
Below, with reference to accompanying drawing, explain embodiments of the present invention.It should be noted that, below, a side mark that is formed with electromagnet assembly of electromagnetic relay is decided to be to the fore-and-aft direction front side, a side mark that is provided with moving contact section and fixed contact section is decided to be to the fore-and-aft direction rear side.In addition, by the direction dictates of holder housing, be above-below direction.And, will with the direction dictates of fore-and-aft direction and above-below direction quadrature, be Width.
In addition, comprise same inscape in following a plurality of execution modes.Therefore, below, to these, same inscape marks shared symbol, and the repetitive description thereof will be omitted.
[the first execution mode]
Fig. 1～Fig. 8 means the figure of the first execution mode of the electromagnetic relay the present invention relates to.As shown in Figure 7, the electromagnetic relay 1 of present embodiment possesses housing 2, matrix 30, electromagnet assembly 10, armature 16, moving contact section 21 and fixed contact section 22.
Yoke 14 bendings form roughly L word shape, at the base plate 14a of yoke 14, upload and are equipped with by coil 12 is reeled and is installed on the coil block 11 that coil rack 13 forms.In addition, coil 12 is connected with the coil terminals 19 that implantation is arranged at matrix 30.Unshakable in one's determination 15 possess main part 15b, at the flange shape suction sheet 15a of the header arrangement of main part 15b, and this iron core 15 is fixed in the installing hole 14b of the base plate 14a of yoke 14 through the state of the through hole 13a of coil rack 13 with main part 15b.
Hinge spring 18 is installed between armature 16 and yoke 14, is formed with the spring leaf 18a that the top of insulation division 17 described later is pressed on top.And, at non-when energising of not switching on to coil 12 the non-excitation of the electromagnet assembly 10 (time), by the pressing force of this spring leaf 18a, the state that the pole piece 16a of armature 16 is pulled open with the suction sheet 15a from unshakable in one's determination 15 keeps.On the other hand, when the energising to coil 12 energising the excitation of the electromagnet assembly 10 (time), the magnetic force of unshakable in one's determination 15 suction sheet 15a overcomes the pressing force of spring leaf 18a, thereby the pole piece 16a of armature 16 is contacted with the suction sheet 15a of iron core 15.
And the moving contact section 21 swung is installed on the vertical sheet 16b that establishes of armature 16 via insulation division 17 along with the action (swing) of such armature 16.
Be provided with moving contact 21a in this moving contact section 21, by moving contact 21a along with the swing of moving contact section 21 be arranged on fixed contact section 22 on fixed contact 22a contact or separate, carry out thus contact change-over.
In the present embodiment, moving contact section 21 possesses: the vertical stator 23 of establishing on sheet 16b that is arranged on armature 16 via insulation division 17; One distolateral and these stator 23 links, and at another distolateral fluid spring (moving contact maintaining part) 24 that is provided with a pair of (a plurality of) moving contact 21a.
The fluid spring 24 of present embodiment possesses: the link sheet 24a that extends and be formed with in upper end along the vertical direction installing hole 24d; From the lower end edge horizontal direction that links sheet 24a and the base plate 24b that rearward extends setting; What from the rear end of base plate 24b, towards top, erect erects sheet 24c.
And moving contact 21a is to be fixed in and to erect sheet 24c towards rearward mode.In the present embodiment, base plate 24b is the shape that is branched off into two strands, and is formed with respectively and erects sheet 24c in the rear end of each component.By forming such moving contact section 21, moving contact 21a becomes than insulation division 17 outstanding state rearward thus, and moving contact 21a and insulation division 17 not overlapping under overlooking.
And as shown in Figure 6, this stator 23 and fluid spring 24 are respectively equipped with two groups.That is, be provided with four moving contact 21a in the electromagnetic relay 1 of present embodiment.
And fixed contact section 22 consists of four fixed contact plates 26 that respectively are connected with a fixed contact 22a, and this fixed contact section 22 is installed on the incorporating section, contact 33 of matrix 30.
Particularly, as shown in Figure 7,26 bendings of fixed contact plate form crank (crank) shape, in the upper end of this fixed contact plate 26, are connected with fixed contact 22a.It should be noted that, fixed contact plate 26 may not need bending to form the crank shape, and can form various shapes.For example, can use linearly fixed contact plate under the side-looking that does not have bending to form.
And, by under the state that is positioned at top and rear at fixed contact 22a by fixed contact plate 26 from below insert incorporating section, contact 33, thus fixed contact plate 26 is installed on to the incorporating section, contact 33 of matrix 30.Now, four fixed contact plates 26 with four fixed contact 22a and four moving contact 21a respectively opposed mode install.And, at non-when energising of not switching on to coil 12 the non-excitation of the electromagnet assembly 10 (time), four fixed contact 22a separate and set in the 33 rear surface, incorporating section, contact of matrix 30 side (right side of Fig. 7) with four moving contact 21a.On the other hand, when the energising to coil 12 energising the excitation of the electromagnet assembly 10 (time), and when moving contact section 21 swings, four moving contact 21a to opposed four fixed contact 22a mutually approach and with they butts.
In addition, in the present embodiment, form electric arc elongate space S in electromagnetic relay 1, the electric arc elongation that this electric arc elongate space S makes moving contact 21a with fixed contact 22a contact or produces while separating.
Particularly, as shown in Figure 2, be provided with the 2a of wall section and sidewall 2b in the inboard of housing 2.And, when with housing 2 coverings, the matrix 30 of each member being installed, the moving contact 21a of a pair of correspondence and fixed contact 22a (contact that is in contact with one another or separates) are surrounded by the 2a of wall section and sidewall 2b.In the present embodiment, the space be separated out by the 2a of this wall section, sidewall 2b becomes electric arc elongate space S.Now, by the 2a of wall section, fixed contact 22a and insulation division 17 are demarcated.
And, on electromagnetic relay 1, be provided with moving contact 21a and fixed contact 22a contact or the electric arc that produces while separating produces the permanent magnet 50 of mechanism to electric arc elongate space S guiding as magnetic field.As shown in Figures 4 and 5, this permanent magnet 50 distolateral with the Width one of the moving contact 21a paired and fixed contact 22a on the mode of downward-extension arrange.And moving contact 21a and fixed contact 22a contact or the electric arc produced while separating are elongated under the magnetic action of permanent magnet 50 above electric arc elongate space S.
And, around at least fixed contact section 22 in electric arc elongate space S, in the mode of accommodating fixed contact 22a, electric arc extinguishing arc section 40 is set.In the present embodiment, this electric arc extinguishing arc section 40 is the box of opening downwards, in the mode that covers fixed contact 22a, is inserted in electric arc elongate space S.It should be noted that, be formed with little opening 42a on the roof 42 of electric arc extinguishing arc section 40, so that electric arc easily enters in electric arc elongate space S.
And electric arc extinguishing arc section 40 is formed by the insulating material that can produce the electric arc arc gas with the electric arc butt time.As the insulating material that forms this electric arc extinguishing arc section 40, preferably unsaturated polyester (UP), add metal hydroxides or hydrate and the material that obtains in the chain type compound.
And the electric arc extinguishing arc section 40 that contact (paired moving contact 21a and fixed contact 22a) accommodated in a covered manner and permanent magnet 50 cover top and Width two ends by magnetic screen yoke 60.The situation that this magnetic screen yoke 60 plays a role to other contact for the permanent magnet 50 that suppresses to be worked in certain contact.
In addition, the downside of the 2a of wall section that fluid spring 24 sides in the wall section that marks off electric arc elongate space S (sidewall of the 2a of wall section, sidewall 2b and housing 2) arrange, being formed with can be for the peristome that erects sheet 24c insertion.In the present embodiment, the downside of the antetheca 41 by the downside at the 2a of wall section and electric arc extinguishing arc section 40 forms respectively peristome 2c and peristome 41a, the sheet 24c that erects that is formed with moving contact 21a can be inserted in electric arc elongate space S thus.
At this, in the present embodiment, the above-mentioned fluid spring (moving contact maintaining part) 24 that is provided with a pair of (a plurality of) moving contact 21a, 21a is made an effort, can guarantee moving contact 21a, 21a independently action respectively.
Particularly, as shown in Fig. 8 (a), in the present embodiment, between a pair of moving contact 21a, the 21a of fluid spring 24, be formed with slit 28.Slit 28 extends to the roughly centre position of the above-below direction that links sheet 24a in the present embodiment from the base plate 24b of fluid spring 24, by link sheet 24a, the base plate 24b of fluid spring 24 and erect sheet 24c and be branched off into two strands of shapes.By such structure, form the first maintaining part 24A that the first moving contact 21a is set, the second maintaining part 24B that separates and arrange the second moving contact 21a with the first maintaining part 24A on fluid spring 24.In addition, on fluid spring 24, be provided with above-mentioned first and second moving contact 21a, 21a in an end of this fluid spring 24, be provided with in the other end the linking part 24C of the first maintaining part 24A and the second maintaining part 24B link.
Like this, in the present embodiment, by form the slit 28 that the first maintaining part 24A is separated with the second maintaining part 24B on fluid spring 24, thus the first maintaining part 24A is configured to respect to the second maintaining part 24B and relatively moves freely.Therefore, the first maintaining part 24A of fluid spring 24 and the second maintaining part 24B can carry out separate action from the crack part of slit 28.
In addition, in the present embodiment, fluid spring 24 is formed by chromium-copper.Chromium-copper has springiness (elasticity), self also can promote the self contained function (relatively moving) of the first moving contact 21a and the second moving contact 21a by such fluid spring 24.
And in the present embodiment, the base end side of the base plate 24b in fluid spring 24 (linking sheet 24a side) arranges the notch 29 of semicircle shape.Notch 29, in Fig. 8 (a), only illustrate the first maintaining part 24A side that is arranged on fluid spring 24, but in fact notch 29 also is arranged on the second maintaining part 24B side.By such notch 29, can make the sheet 24c that erects of the first and second maintaining part 24A, 24B easily move, can access CONTACT WITH FRICTION (wiping) effect between contact (paired moving contact 21a and fixed contact 22a).
Then, the contact action of the electromagnetic relay 1 of such structure described.
In this electromagnetic relay 1, during the state that is non-excitation at electromagnet assembly 10, the spring leaf 18a of hinge spring 18 is pressed the upper surface of insulation division 17, thereby armature 16 rotates to the clockwise direction in Fig. 7.Therefore, the pole piece 16a of armature 16 becomes the state separated from unshakable in one's determination 15 suction sheet 15a.Under this state, as shown in Figure 7, moving contact 21a also separates with fixed contact 22a.
When to coil 12 energisings, making electromagnet assembly 10 excitation, by yoke 14, iron core 15 and armature 16, produce the magnetic force to the suction sheet 15a attraction of iron core 15 by the pole piece 16a of armature 16.Now, the pole piece 16a of armature 16 overcomes the spring force (pressing force) of hinge spring 18 and is attracted by the suction sheet 15a of iron core 15, thereby armature 16 is rotated to the counter clockwise direction in Fig. 7.Follow in this, fluid spring 24 is also to counterclockwise mobile, and four moving contact 21a contact with opposed fixed contact 22a respectively.
When the energising stopped to coil 12, carry out contrary action, thereby moving contact 21a separates with fixed contact 22a.
Like this, the on/off by switching to the energising of coil 12, thus make moving contact 21a with fixed contact 22a contact or separate, sometimes produce electric arc with fixed contact 22a contact or while separating at moving contact 21a.
In the situation that such generation electric arc, electric arc is guided to electric arc elongate space S by permanent magnet 50.That is, in moving contact 21a and fixed contact 22a contact or the space (electric arc elongate space S) of electric arc electric arc extinguishing arc section 40 in that produce while separating, extend.Now, electric arc is advanced and extends in the mode of licking the inner surface of licking electric arc extinguishing arc section 40.That is, electric arc extends in the inner surface butt with electric arc extinguishing arc section 40.Therefore, produce the gas of electric arc extinguishing arcs from electric arc extinguishing arc section 40, by this gas by the electric arc extinguishing arc.
On the other hand, in the present embodiment, by above-mentioned electric arc elongate space S etc. is set, can improve thus the electric arc interrupting performance, but also may because of electric arc make moving contact 21a and fixed contact 22a deposited.Especially in the situation that the moving contact 21a of the side in being arranged at a pair of moving contact 21a, the 21a of fluid spring 24 occur deposited, the moving contact 21a that in the past possibly can't make opposite side with its opposed fixed contact 22a, contact.Yet, in the present embodiment, can address this problem.
That is, the conventional example as shown in Fig. 9 (a) is such, in the past, is to install and there is no the structure of flexible moving contact plate 25 as the moving contact maintaining part on fluid spring 24.In such structure, think when the moving contact 21a of a side deposited in its opposed fixed contact 22a the time, by stopping to the energising of coil 12, the spring force of hinge spring 18 is to 25 inputs of moving contact plate thus, thereby as shown in Fig. 9 (b), moving contact plate 25 distortion that twists.Under such state, even again to coil 12 energisings, make electromagnet assembly 10 excitations, because moving contact plate 25 does not have elasticity, so moving contact plate 25 slide when maintaining the state of this distortion mobile (a pair of moving contact 21a, 21a mono-body action).Thereby, although can make the moving contact 21a of a side again contact with fixed contact 22a, even the moving contact 21a of opposite side becomes with fixed contact 22a the state that energising also separates, can't make the contact of above-mentioned opposite side again contact.
On the other hand, in the present embodiment, as shown in Fig. 8 (a), on fluid spring 24 (moving contact maintaining part), slit 28 is set, and fluid spring 24 consists of elastomer, the first maintaining part 24A is configured to respect to the second maintaining part 24B and relatively moves freely.Therefore, the distortion even fluid spring 24 twists, the first maintaining part 24A and the second maintaining part 24B that are provided with a pair of moving contact (the first moving contact and the second moving contact) 21a, 21a also can independently move respectively.Therefore, although the moving contact of the first maintaining part 24A (the first moving contact) 21a and the state separated because torsional deflection becomes with its opposed fixed contact 22a, but, as shown in Fig. 8 (b), by energising, can make the first maintaining part 24A be relatively moved and this first maintaining part 24A is pressed into from this state.Thus, moving contact (the first moving contact) 21a that can make the first maintaining part 24A with its opposed fixed contact 22a, again contact, can solve problem in the past.
As described above, in the present embodiment, form the first maintaining part 24A, the second maintaining part 24B and linking part 24C on fluid spring (moving contact maintaining part) 24, and the first maintaining part 24A is configured to respect to the second maintaining part 24B and relatively moves freely.Therefore, the first maintaining part 24A that is provided with the first moving contact 21a can independently move respectively with the second maintaining part 24B that is provided with the second moving contact 21a, thereby can further improve reliability of contact.
In addition, in the present embodiment, form the slit 28 that the first maintaining part 24A is separated with the second maintaining part 24B on fluid spring (moving contact maintaining part) 24.Therefore, can make the first maintaining part 24A and the second maintaining part 24B relatively move more reliably, can improve the independently reliability of action.
In addition, in the present embodiment, because fluid spring (moving contact maintaining part) 24 consists of elastomer, therefore can make fluid spring 24 there is springiness (elasticity), can promote the self contained function (relatively moving) of the first maintaining part 24A and the second maintaining part 24B.In addition, in the situation that will be formed by elastomer as the fluid spring 24 of moving contact maintaining part like this, also have advantages of that easily to obtain the CONTACT WITH FRICTION effect such.It should be noted that, the CONTACT WITH FRICTION effect refers to after contact (paired moving contact 21a and fixed contact 22a) contacts, and moving contact 21a slides and strike off the effect of the impurity that generates etc. on fixed contact 22a surface.
Especially in the present embodiment, on the base plate 24b due to the fluid spring 24 being formed by elastomer, be provided with notch 29, therefore can easily make the sheet 24c that erects that is provided with moving contact 21a move, thereby can obtain more reliably the CONTACT WITH FRICTION effect.
In addition, in the present embodiment, first and second moving contact 21a, 21a are arranged on to an end of fluid spring (moving contact maintaining part) 24, and linking part 24C are arranged on to the other end of fluid spring (moving contact maintaining part) 24.Therefore, with the structure that for example linking part 24C is arranged on to the pars intermedia of fluid spring 24, compare, can be by the first maintaining part 24A and the second maintaining part 24B branch more longways, thus can make the first maintaining part 24A and the second maintaining part 24B easily relatively move.
Then, with reference to Figure 10～Figure 12, the variation of the moving contact maintaining part that the first execution mode is related to describes.
Figure 10 means the figure as the first variation of the fluid spring 24A of moving contact maintaining part, and this variation is with the main difference point of above-mentioned the first execution mode, the reducing diameter part abolishment that will arrange on the linking part 24C of fluid spring 24.
In this variation of above structure, also can access effect, the effect same with above-mentioned the first execution mode.
It should be noted that, in the situation that will link sheet 24a as this variation, form rectangular shape, compare with the fluid spring that is provided with reducing diameter part 24 of above-mentioned the first execution mode, although spring constant becomes greatly, can easily manufacture.
Figure 11 means the figure as the second variation of the fluid spring 24B of moving contact maintaining part, and this variation is with the main difference point of above-mentioned the first variation, at the place, crack of slit 28, is provided with the circular-arc 28a of hole section.
In this variation of above structure, also can access and above-mentioned the first execution mode and same effect, the effect of the first variation.
Figure 12 means the figure of the 3rd variation of moving contact maintaining part, and this variation is with the main difference point of above-mentioned the first execution mode, the moving contact plate 25 as the moving contact maintaining part is installed on fluid spring 24.
This variation is same with conventional example, forms the structure that the moving contact plate 25 that is provided with a pair of moving contact 21a, 21a has been installed on fluid spring 24, but be formed with slit 28 on fluid spring 24 and moving contact plate 25.
That is, fluid spring 24 possesses the link sheet 24a of branch via slit 28, and moving contact plate 25 possesses a pair of web 25a, the base plate 25b on the link sheet 24a that is arranged on this branch and erects sheet 25c.
In this variation of above structure, also can access and above-mentioned the first execution mode and same effect, the effect of first, second variation.
It should be noted that, in the situation that this variation, the parts number of packages has increased the amount of moving contact plate 25.In other words, in above-mentioned the first execution mode and first, second variation that only by fluid spring 24, are formed the moving contact maintaining part, have advantages of that can to cut down the parts number of packages such.
[the second execution mode]
The electromagnetic relay 1A that present embodiment relates to has and the electromagnetic relay 1 of above-mentioned the first execution mode same structure roughly.
That is, as shown in figure 13, the electromagnetic relay 1A of present embodiment possesses housing 2, matrix 30, electromagnet assembly 10, armature 16, moving contact section 21, fixed contact section 22, electric arc elongate space S and produces the permanent magnet 50 of mechanism as magnetic field.
At this, the main difference point of the electromagnetic relay 1A of present embodiment and the electromagnetic relay 1 of above-mentioned the first execution mode is, electric arc extinguishing arc section 40 is not set in electric arc elongate space S.
In the present embodiment of above structure, also can play effect, the effect same with above-mentioned the first execution mode.That is, can make moving contact 21a and fixed contact 22a contact or the arc length elongation of the electric arc that produces while separating by permanent magnet 50, can further improve electric arc arc performance (electric arc interrupting performance).
In addition, even for example, occur deposited because electric arc makes the side (the second moving contact 21a) in the upper moving contact 21a arranged of moving contact plate 25 (moving contact maintaining part), owing to being formed with slit 28 on moving contact plate 25, therefore, also can make the first maintaining part 24A and the second maintaining part 24B that are provided with a pair of moving contact (the first moving contact and the second moving contact) 21a, 21a independently move respectively, thereby can further improve reliability of contact.
It should be noted that, in the present embodiment, be suitable for the moving contact maintaining part (structure of moving contact plate 25 is installed on fluid spring 24) that above-mentioned the 3rd variation relates to, but can certainly be suitable for the moving contact maintaining part ( fluid spring 24,24A, 24B) that above-mentioned the first execution mode or above-mentioned first, second variation relate to.
In addition, in the electromagnetic relay 1A shown in Figure 13, the 2a of wall section can be formed by the insulating material that can produce the electric arc arc gas with the electric arc butt time (material identical with the electric arc extinguishing arc section 40 shown in above-mentioned the first execution mode), and the 2a of wall section doubles as electric arc extinguishing arc section.In addition, the material that housing 2 integral body can be identical by the electric arc extinguishing arc section 40 with shown in above-mentioned the first execution mode forms.
[the 3rd execution mode]
The electromagnetic relay 1B that present embodiment relates to has the same structure roughly with the electromagnetic relay 1A of the electric arc extinguishing arc section 40 that do not arrange in electric arc elongate space S of above-mentioned the second execution mode.
At this, the main difference point of the electromagnetic relay 1B of present embodiment and the electromagnetic relay 1A of above-mentioned the second execution mode is, as shown in figure 14, is provided with the separates walls 70 that electric arc elongate space S is cut apart.
Particularly, in the present embodiment, the space that the 2a of wall section formed by the inboard at housing 2 and sidewall 2b are separated out becomes electric arc elongate space S.And, dispose moving contact 21a and the fixed contact 22a (contact that is in contact with one another or separates) of a pair of correspondence in each electric arc elongate space S be separated out at this, and be respectively equipped with separates walls 70 in each electric arc elongate space S.
In the present embodiment, separates walls 70 towards the side-prominent setting of fixed contact 22a, longitudinally is divided into two parts by electric arc elongate space S along the prolonging direction of electric arc A from the upper wall portions 2d of housing 2.
It should be noted that, in the present embodiment, in each electric arc elongate space S, a separates walls 70 is set respectively, electric arc elongate space S is divided into to two parts, but also can in each electric arc elongate space S, a plurality of separates walls 70 be set respectively, more than electric arc elongate space S is divided into to three parts.
By above present embodiment, also can play effect, the effect same with above-mentioned first and second execution mode.
In addition, in the present embodiment, be provided with the separates walls 70 that electric arc elongate space S is cut apart.Therefore, with above-mentioned first and second execution mode, compare, can make electric arc A unroll separates walls 70 and correspondingly make electric arc A length further increase, thereby can further improve electric arc arc performance (electric arc interrupting performance).
In addition, improve like this electric arc arc performance (electric arc interrupting performance), have advantages of that the voltage that raising can produce at the partition voltage cut off between moving contact 21a and fixed contact 22a between two contact 21a, 22a is such.
In addition, in the present embodiment, the space that the 2a of wall section that will be formed by the inboard at housing 2 and sidewall 2b are separated out is as electric arc elongate space S, and in this electric arc elongate space S, separates walls 70 is set.Therefore, also have advantages of as follows: can make electric arc elongate space S form the extinguishing arc bulk same with above-mentioned first and second execution mode, and increase electric arc A length simultaneously.Therefore, contribute to the miniaturization of electromagnetic relay 1B.
[the 4th execution mode]
The electromagnetic relay 1C that present embodiment relates to has the same structure roughly with the electromagnetic relay 1B that is provided with the separates walls 70 that electric arc elongate space S is cut apart of above-mentioned the 3rd execution mode.
At this, the main difference point of the electromagnetic relay 1B of the electromagnetic relay 1C of present embodiment and above-mentioned the 3rd execution mode is, as shown in figure 15, on the wall of facing with electric arc elongate space S, is provided with jog 73.
Particularly, in the present embodiment, the space that the 2a of wall section formed by the inboard at housing 2 and sidewall 2b are separated out also becomes electric arc elongate space S.And, dispose moving contact 21a and the fixed contact 22a (contact that is in contact with one another or separates) of a pair of correspondence in each electric arc elongate space S be separated out at this, and in each electric arc elongate space S, separates walls 70 and jog 73 be set respectively.
In the present embodiment, jog 73 is formed on the inner surface of upper wall portions 2d that the wall of facing with electric arc elongate space S is housing 2.And, across separates walls 70, jog 73 is set in the left and right sides by the upper wall portions 2d at housing 2 like this, thus along the prolonging direction of electric arc A and form concave surface and the convex surface of jog 73.
By above present embodiment, also can play effect, the effect same with above-mentioned the first～three execution mode.
In addition, in the present embodiment, on the wall of facing with electric arc elongate space S, be provided with jog 73.Therefore, with above-mentioned the 3rd execution mode, compare, can make electric arc A unroll jog 73 and correspondingly make electric arc A length further increase, thereby can further improve electric arc arc performance (electric arc interrupting performance).And, with respect to above-mentioned the 3rd execution mode, can also further improve partition voltage.
In addition, in the present embodiment, because the prolonging direction along electric arc A has formed jog 73, therefore can make electric arc A enter more reliably jog 73, can increase reliably electric arc A length.
It should be noted that, in the present embodiment, will be applicable to as the jog 73 of characteristic be provided with above-mentioned the 3rd execution mode of separates walls 70, but also go for not arranging above-mentioned first and second execution mode of separates walls 70.
[the 5th execution mode]
The electromagnetic relay 1D that present embodiment relates to has the same structure roughly with the electromagnetic relay 1A of the electric arc extinguishing arc section 40 that do not arrange in electric arc elongate space S of above-mentioned the second execution mode.
At this, the main difference point of the electromagnetic relay 1D of present embodiment and the electromagnetic relay 1A of above-mentioned the second execution mode is, as shown in figure 16, is provided with the separates walls 70A that is partitioned into electric arc elongate space S1, S2.
Particularly, in the present embodiment, the peristome 2c formed at the downside of the 2a of wall section widens to upside than above-mentioned the second execution mode.And, make the 2a of wall section bring into play function as separates walls 70A, by the space from separates walls 70A to fixed contact 22a side (right side of Figure 16) as the first electric arc elongate space S1, and will be from separates walls 70A to insulation division the space of 17 sides (left side of Figure 16) as the second electric arc elongate space S2.Therefore, in the present embodiment, corresponding and form a plurality of the first electric arc elongate space S1 with a pair of corresponding moving contact 21a and fixed contact 22a, with respect to this, the second electric arc elongate space S2 only forms one and share in the inboard of housing 2.
By above present embodiment, also can play effect, the effect same with above-mentioned the first～four execution mode.
In addition, in the present embodiment, the separates walls 70A that is partitioned into electric arc elongate space S1, S2 is set.Therefore, with above-mentioned the first～four execution mode, compare, can make electric arc A unroll separates walls 70A and correspondingly make electric arc A length further increase, thereby can further improve electric arc arc performance (electric arc interrupting performance).And, with respect to above-mentioned the first～four execution mode, can also further improve partition voltage.
It should be noted that, in the present embodiment, be partitioned into electric arc elongate space S1, these two parts of S2 by separates walls 70A, but the separates walls 70 that also can for example in the first electric arc elongate space S1, append above-mentioned the 3rd execution mode, and more than the electric arc elongate space is divided into to three parts.
[the 6th execution mode]
The electromagnetic relay 1E that present embodiment relates to has the electromagnetic relay 1D same structure roughly that is partitioned into the separates walls 70A of electric arc elongate space S1, S2 with being provided with of above-mentioned the 5th execution mode.
At this, the main difference point of the electromagnetic relay 1D of the electromagnetic relay 1E of present embodiment and above-mentioned the 5th execution mode is, as shown in figure 17, on the wall of facing with electric arc elongate space S1, S2, is provided with jog 73.
Particularly, in the present embodiment, the peristome 2c that also will form at the downside of the 2a of wall section widens to upside, and makes the 2a of wall section bring into play function as separates walls 70A.And, by the space from separates walls 70A to fixed contact 22a side as the first electric arc elongate space S1, will be from separates walls 70A to insulation division the space of 17 sides as the second electric arc elongate space S2, and in above-mentioned the first and second electric arc elongate space S1, S2, jog 73 is set respectively.
In the present embodiment, jog 73 is respectively formed on the face as fluid spring 24 sides of the median wall 35 of the inner surface of wall, upper wall portions 2d housing 2 faced with electric arc elongate space S1, S2 and matrix 30.And above-mentioned a pair of jog 73 is all along the prolonging direction of electric arc A and form concave surface and the convex surface of jog 73.
By above present embodiment, also can play effect, the effect same with above-mentioned the first～five execution mode.
In addition, in the present embodiment, on the wall of facing with electric arc elongate space S1, S2, jog 73 is set.Therefore, with above-mentioned the 5th execution mode, compare, can make electric arc A unroll jog 73 and correspondingly make electric arc A length further increase, thereby can further improve electric arc arc performance (electric arc interrupting performance).And, with respect to above-mentioned the 5th execution mode, can also further improve partition voltage.
In addition, in the present embodiment, because the prolonging direction along electric arc A forms jog 73, therefore can make electric arc A enter more reliably jog 73,73, can increase reliably electric arc A length.
[the 7th execution mode]
The electromagnetic relay 1 that present embodiment relates to has and the electromagnetic relay 1 of above-mentioned the first execution mode same structure roughly.
That is, the electromagnetic relay 1 of present embodiment possesses housing 2, matrix 30, electromagnet assembly 10, armature 16, moving contact section 21, fixed contact section 22, electric arc elongate space S and produces the permanent magnet 50 of mechanism as magnetic field.
And, as shown in Fig. 7 and Figure 18 (a), (b), moving contact section 21 possesses tabular stator (fixed part) 23, with at least linking part 24C with fluid spring (moving contact maintaining part) 24, overlapping mode configures this stator 23, and engages with upper end (leading section) 24f of this linking part 24C.
It should be noted that, as mentioned above, be formed with a pair of installing hole 24d (with reference to Fig. 8 (a)) at the upper end of fluid spring 24 24f, the installing hole (not shown) of this installing hole 24d and stator 23 is for example riveted joint by fixed component 27.Stator 23 is installed on the vertical sheet 16b that establishes of armature 16 via insulation division 17, thus, follow the swing of armature 16 and stator 23 and the fluid spring 24 of moving contact section 21 swing integratedly.
At this, the electromagnetic relay of present embodiment 1 is with the main difference point of the electromagnetic relay 1 of above-mentioned the first execution mode, at fluid spring 24 and the overlapping opposed faces 24g of stator 23, the either party in 23a, is provided with protuberance 20.
Particularly, as shown in Figure 18 (a), (b), in the present embodiment, protuberance 20 is set on the opposed faces 23a of stator 23, and this protuberance 20 from this opposed faces 23a towards fluid spring 24 sides be section circular-arc give prominence to.Now, preferably protuberance 20 is arranged on the end 23b of in a pair of opposed faces 24g, 23a and upper end linking part 24C (leading section) 24f side opposition side.
Figure 19 means the figure of the action of fluid spring 24, the figure of the action while (a) meaning the connection that moving contact 21a is contacted with fixed contact 22a, the figure of the action while (b) meaning the disconnection that moving contact 21a is separated with fixed contact 22a.
When the pole piece 16a that makes armature 16 to coil 12 energisings attracts the suction sheet 15a of iron core 15 to go up, fluid spring 24 rotates to the direction of the arrow a of Figure 19 (a) from the state of Fig. 7 and armature 16 interlocks, becomes the state of connection thereby moving contact 21a contacts with fixed contact 22a.On the other hand, when the energising that stops to coil 12, carry out contrary action, fluid spring 24 rotates to the direction of the arrow b of Figure 19 (b) with armature 16 interlocks, become the state of disconnection thereby moving contact 21a separates with fixed contact 22a, return to the state of Fig. 7.
Now, in the present embodiment, at fluid spring 24 and the overlapping opposed faces 24g of stator 23, the either party in 23a, protuberance 20 is set.Therefore, even occur deposited because electric arc makes moving contact 21a and fixed contact 22a like that in the situation that above-mentioned, also can be to fluid spring 24 to arrow b direction (that is, from fixed contact 22a, dragging the direction of moving contact 21a) active force by protuberance 20.Thereby, by fluid spring 24 effects that make the previous status shown in 20 pairs of double dot dash lines of protuberance, can easily from fixed contact 22a, drag moving contact 21a thus, thereby can further improve reliability of contact.
By above present embodiment, also can play effect, the effect same with above-mentioned the first～six execution mode.
In addition, in the present embodiment, moving contact section 21 possesses stator (fixed part) 23, and with at least linking part 24C with fluid spring (moving contact maintaining part) 24, overlapping mode configures this stator 23, and engages with upper end (leading section) 24f of this linking part 24C.And, at fluid spring (moving contact maintaining part) 24 and the overlapping opposed faces 24g of stator (fixed part) 23, the either party in 23a, protuberance 20 is set.Therefore, during the disconnection of the contact of separating from fixed contact 22a at moving contact 21a, as shown in Figure 19 (b), can be by 20 pairs of fluid springs 24 of protuberance to arrow b direction (direction of from fixed contact 22a, dragging moving contact 21a) active force.Thereby, even in the situation that because of electric arc make moving contact 21a and fixed contact 22a deposited, also can easily from fixed contact 22a, drag moving contact 21a, thereby can further improve reliability of contact.
And, in the present embodiment, protuberance 20 is arranged on the end 23b of in a pair of opposed faces 24g, 23a and upper end linking part 24C (leading section) 24f side opposition side.Therefore therefore, the position that can make 20 pairs of fluid springs 24 of protuberance apply power more approaches the contact side, can increase drag force and is more prone to drag moving contact 21a from fixed contact 22a.
In addition, in the present embodiment, it is circular-arc that the protuberance 20 that will arrange on the opposed faces 23a of stator 23 forms section.Therefore, when protuberance 20 contacts with the opposed faces 24g of fluid spring 24, can suppress the scraping equivalent damage of protuberance 20 or opposed opposed faces 24g side, and simultaneously can effectively to pulling direction, apply power in the front that is the circular-arc outstanding protuberance 20 of section.
[the 8th execution mode]
The electromagnetic relay 1 that present embodiment relates to has and the electromagnetic relay 1 of above-mentioned the 7th execution mode same structure roughly.
At this, the electromagnetic relay 1 of present embodiment is with the main difference point of the electromagnetic relay 1 of above-mentioned the 7th execution mode, and stator (fixed part) 23A is extended and is set to and the first maintaining part 24A of fluid spring (moving contact maintaining part) 24 and the overlapping position of the second maintaining part 24B.
Particularly, as shown in Figure 20 (a), (b), in the present embodiment, protuberance 20 also is set on the opposed faces 23a of stator 23, and this protuberance 20 from this opposed faces 23a towards fluid spring 24 sides be section circular-arc give prominence to.In addition, protuberance 20 is arranged on the end 23b of in a pair of opposed faces 24g, 23a and upper end linking part 24C (leading section) 24f side opposition side.
And stator 23A extends and to be set to and the first maintaining part 24A that is branched off into two strands of shapes from linking part 24C and the overlapping position of the second maintaining part 24B, extend in the present embodiment the base plate 24b that is set to fluid spring 24 near.
By above present embodiment, also can play effect, the effect same with above-mentioned the first～seven execution mode.That is, during the disconnection of the contact of separating from fixed contact 22a at moving contact 21a, can be by 20 pairs of fluid springs 24 of protuberance to drag the directive effect power of moving contact 21a from fixed contact 22a.Therefore, even, in the situation that moving contact 21a and fixed contact 22a are occurred is deposited because of electric arc, also can easily from fixed contact 22a, drag moving contact 21a, can further improve reliability of contact.
In addition, in the present embodiment, stator (fixed part) 23A is extended and to be set to and the first maintaining part 24A of fluid spring (moving contact maintaining part) 24 and the overlapping position of the second maintaining part 24B.Therefore therefore, the position that can make 20 pairs of fluid springs 24 of protuberance apply power further approaches the contact side, can increase drag force and further easily from fixed contact 22a, drags moving contact 21a.
[the 9th execution mode]
The electromagnetic relay 1 that present embodiment relates to has and the above-mentioned the 7th and the electromagnetic relay 1 of the 8th execution mode same structure roughly.
At this, the electromagnetic relay 1 of present embodiment with the above-mentioned the 7th and the main difference point of the electromagnetic relay 1 of the 8th execution mode be, on the opposed faces 24g of fluid spring (moving contact maintaining part) 24, protuberance 20A is set, and this protuberance 20A from this opposed faces 24g towards stator (fixed part) 23 sides be section circular-arc give prominence to.
As shown in Figure 21 (a), (b), protuberance 20A forms by the part by fluid spring 24 is crooked, in the present embodiment, protuberance 20A also is arranged on the end 23b of in a pair of opposed faces 24g, 23a and upper end linking part 24C (leading section) 24f side opposition side.
And in the present embodiment, in dragging in the lower time of moving contact 21a, protuberance 20A contacts with the opposed faces 23a of stator 23, thus fluid spring 24 is inputted to the power that pulls directions.
By above present embodiment, also can play effect, the effect same with above-mentioned the first～eight execution mode.That is, during the disconnection of the contact of separating from fixed contact 22a at moving contact 21a, can be by protuberance 20A to fluid spring 24 to drag the directive effect power of moving contact 21a from fixed contact 22a.Therefore, even in the situation that because of electric arc make moving contact 21a and fixed contact 22a deposited, also can easily from fixed contact 22a, drag moving contact 21a, can further improve reliability of contact.
It should be noted that, in the present embodiment, protuberance 20A is arranged on the linking part 24C of fluid spring 24, but it is upper protuberance 20A can certainly to be arranged on to the first maintaining part 24A and the second maintaining part 24B, and stator 23 is extended and is set to and the first maintaining part 24A and the overlapping position of the second maintaining part 24B.
Above, to of the present invention, preferred embodiment be illustrated, but the present invention is not defined as above-mentioned execution mode, can carry out various distortion.
For example, in the respective embodiments described above, exemplified the structure that via insulation division 17, moving contact section 21 is installed on to armature 16, but also can via insulation division 17, moving contact section 21 be installed on to armature 16.
In addition, in the electromagnetic relay 1A～1E related at above-mentioned the second～six execution mode, be suitable for the moving contact maintaining part (structure as the moving contact plate 25 of moving contact maintaining part is installed on fluid spring 24) that above-mentioned the 3rd variation relates to.But, be not defined in this, can certainly be suitable for the moving contact maintaining part ( fluid spring 24,24A, 24B) that above-mentioned the first execution mode or above-mentioned first, second variation relate to.
In addition, protuberance 20 or protuberance 20A can by one or not the mode of consubstantiality be arranged on fluid spring 24 and the overlapping opposed faces 24g of stator 23, the either party in 23a.
In addition, the specification of armature 16, hinge spring 18 or other trickle part (shape, size, layout etc.) also can suitably be changed.
Claims (8)
1. an electromagnetic relay is characterized in that possessing:
Armature, its excitation by electromagnet assembly, non-excitation are swung;
Moving contact section, it possesses the moving contact maintaining part that is provided with a plurality of moving contacts, and is installed on described armature and follows the swing of this armature to be swung;
Fixed contact section, it has the fixed contact that contacts or separate with described moving contact,
Described moving contact maintaining part possess the first maintaining part of being provided with the first moving contact, with described the first retaining part from and be provided with the second moving contact the second maintaining part, will described the first maintaining part and the linking part of described the second maintaining part link,
Described the first maintaining part is configured to respect to described the second maintaining part and relatively moves freely.
2. electromagnetic relay according to claim 1, is characterized in that,
Described moving contact maintaining part be formed with make described the first maintaining part and described the second retaining part from slit.
3. electromagnetic relay according to claim 1 and 2, is characterized in that,
Described moving contact maintaining part consists of elastomer.
4. according to the described electromagnetic relay of any one in claim 1～3, it is characterized in that,
Described the first moving contact and the second moving contact are arranged on an end of described moving contact maintaining part, and described linking part is arranged on the other end of described moving contact maintaining part.
5. according to the described electromagnetic relay of any one in claim 1～4, it is characterized in that,
Described moving contact section possesses fixed part, and this fixed part to be to configure with the overlapping mode of at least described linking part of described moving contact maintaining part, and engages with the leading section of this linking part,
Either party in described moving contact maintaining part and the overlapping opposed faces of described fixed part is provided with protuberance.
6. electromagnetic relay according to claim 5, is characterized in that,
Described protuberance is arranged on the end of leading section side opposition side in described opposed faces and described linking part.
7. according to the described electromagnetic relay of claim 5 or 6, it is characterized in that,
Described fixed part extends and is set to and described first maintaining part of described moving contact maintaining part and the overlapping position of the second maintaining part.
8. according to the described electromagnetic relay of any one in claim 5～7, it is characterized in that, it is circular-arc that described protuberance forms section.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-126726 | 2012-06-04 | ||
| JP2012126726 | 2012-06-04 | ||
| JP2012282006A JP6124173B2 (en) | 2012-06-04 | 2012-12-26 | Electromagnetic relay |
| JP2012-282006 | 2012-12-26 |
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| Publication Number | Publication Date |
|---|---|
| CN103456568A true CN103456568A (en) | 2013-12-18 |
| CN103456568B CN103456568B (en) | 2017-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310214676.6A Active CN103456568B (en) | 2012-06-04 | 2013-05-31 | Electromagnetic relay |
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| CN110168692A (en) * | 2017-01-18 | 2019-08-23 | 安电株式会社 | Contact making device and electromagnetic relay |
| CN110556269A (en) * | 2018-05-31 | 2019-12-10 | 富士通电子零件有限公司 | Electromagnetic relay |
| CN113745060A (en) * | 2021-09-01 | 2021-12-03 | 安徽中骄智能科技有限公司 | New forms of energy high voltage direct current relay based on it is insulating and arc extinguishing |
| CN110556269B (en) * | 2018-05-31 | 2024-04-30 | 富士通电子零件有限公司 | Electromagnetic relay |
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| CN103456568B (en) | 2017-10-27 |
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