CN103456568B - Electromagnetic relay - Google Patents

Abstract

Present invention offer is a kind of can further to improve the electromagnetic relay of reliability of contact.Electromagnetic relay (1) possesses：Armature (16), its excitation, non-excitation by electromagnet assembly (10) and swung；Moving contact portion (21), it possesses the fluid spring (moving contact maintaining part) (24) provided with a pair of (multiple) moving contacts (21a, 21a), and is installed on armature (16) and is swung with the swing of the armature (16)；Fixed contact portion (22), it has the fixed contact (22a, 22a) for contacting or separating with moving contact (21a, 21a).The linking part (24C) that fluid spring (24) possesses the first maintaining part (24A) provided with the first moving contact (21a), separated with the first maintaining part (24A) and is provided with the second maintaining part (24B) of the second moving contact (21a), links the first maintaining part (24A) and the second maintaining part (24B), the first maintaining part (24A) is configured to relatively move freely relative to the second maintaining part (24B).

Description

Electromagnetic relay

Technical field

The present invention relates to electromagnetic relay.

Background technology

It is used as existing electromagnetic relay, it is known to which electromagnetic relay described as follows, it possesses：Armature, it passes through electromagnetism The excitation of iron component, non-excitation and swung；Moving contact portion, it possesses the moving contact plate provided with a pair of moving contacts (moving contact maintaining part), and swung with the swing of armature；Fixed contact portion, its have with movable contact contacts or A pair of fixed contacts of separation (for example, referring to patent document 1).

【Patent document 1】Japanese Unexamined Patent Publication 2010-123545 publications

However, in the above prior art, being formed as a pair set on moving contact plate (moving contact maintaining part) The structure that moving contact is integrally acted.Therefore, if deposition, possible nothing occur for the contact (moving contact and fixed contact) of side Method contacts the contact (moving contact and fixed contact) of opposite side.Accordingly, it is possible to damage reliability of contact.

The content of the invention

Therefore, it is an object of the invention to obtain further improving the electromagnetic relay of reliability of contact.

To achieve these goals, the purport of fisrt feature of the invention is, the electromagnetic relay possesses：Armature, Its excitation, non-excitation by electromagnet assembly and swung；Moving contact portion, it possess provided with multiple moving contacts can Movable contact maintaining part, and be installed on the armature and swung with the swing of the armature；Fixed contact portion, its have with The movable contact contacts or the fixed contact of separation, the moving contact maintaining part possess first provided with the first moving contact Maintaining part, with first holding part from and provided with the second moving contact the second maintaining part, by first maintaining part The linking part linked with second maintaining part, first maintaining part is configured to relative relative to second maintaining part and moved Move freely.

The purport of second feature is that being formed with the moving contact maintaining part makes first maintaining part and described Two holding parts from slit.

The purport of third feature is that the moving contact maintaining part is made up of elastomer.

The purport of fourth feature is that first moving contact and the second moving contact are arranged on the moving contact and protected The one end in portion is held, and the linking part is arranged on the other end of the moving contact maintaining part.

The purport of fifth feature is that the moving contact portion possesses fixed part, the fixed part with the moving contact The mode that at least described linking part of maintaining part is overlapping is configured, and is engaged with the leading section of the linking part, in the moving contact Either one in the maintaining part opposed faces overlapping with the fixed part is provided with convex portion.

The purport of sixth feature is that the convex portion is arranged on the leading section side with the linking part in the opposed faces The end of opposite side.

The purport of seventh feature is that the fixed part is extended described first with the moving contact maintaining part Maintaining part and the overlapping position of the second maintaining part.

The purport of eighth feature is that the convex portion is formed as section arc-shaped.

【Invention effect】

According to the present invention, because the first maintaining part is configured to relatively move freely relative to the second maintaining part, therefore set There are the first maintaining part of the first moving contact and the second maintaining part provided with the second moving contact to carry out independent move respectively Make, can further improve reliability of contact.

Brief description of the drawings

Fig. 1 is the front view for representing the electromagnetic relay that the first embodiment of the present invention is related to.

Fig. 2 is the stereogram for the cover for representing the electromagnetic relay that the first embodiment of the present invention is related to.

Fig. 3 is the solid for covering the state after removing for representing the electromagnetic relay for being related to the first embodiment of the present invention Figure.

Fig. 4 is Fig. 1 A-A sectional views.

Fig. 5 is the stereogram for representing the state after locally removing Fig. 3 magnetic screen yoke and electric arc extinguishing arc portion.

Fig. 6 is to represent the figure after a part for the electromagnetic relay that is related to of first embodiment of the present invention is removed, and is Represent the stereogram in moving contact portion and fixed contact portion.

Fig. 7 is Fig. 4 B-B sectional views.

Fig. 8 is the figure for representing the moving contact maintaining part that the first embodiment of the present invention is related to, and (a) is stereogram, (b) It is the explanation figure for the independent action for representing moving contact.

Fig. 9 is the figure for representing existing moving contact maintaining part, and (a) is stereogram, and (b) is the one for representing moving contact Action explanation figure.

Figure 10 is the figure for the first variation for representing the moving contact maintaining part that the first embodiment of the present invention is related to.

Figure 11 is the figure for the second variation for representing the moving contact maintaining part that the first embodiment of the present invention is related to.

Figure 12 is the figure for the 3rd variation for representing the moving contact maintaining part that the first embodiment of the present invention is related to.

Figure 13 is the longitudinal sectional view for the electromagnetic relay that second embodiment of the present invention is related to.

Figure 14 is the longitudinal sectional view for the electromagnetic relay that third embodiment of the present invention is related to.

Figure 15 is the longitudinal sectional view for the electromagnetic relay that the 4th embodiment of the invention is related to.

Figure 16 is the longitudinal sectional view for the electromagnetic relay that the 5th embodiment of the invention is related to.

Figure 17 is the longitudinal sectional view for the electromagnetic relay that the 6th embodiment of the invention is related to.

Figure 18 is the figure for the moving contact maintaining part for representing the electromagnetic relay that the 7th embodiment of the present invention is related to, (a) it is side view, (b) is front view.

Figure 19 is the figure for the action for representing the moving contact maintaining part shown in Figure 18, and (a) is to represent to make moving contact and solid The figure of action during connection (ON) of fixed contact contact, (b) is the disconnection (OFF) for representing to make moving contact separate with fixed contact When action figure.

Figure 20 is the figure for the moving contact maintaining part for representing the electromagnetic relay that the 8th embodiment of the present invention is related to, (a) it is side view, (b) is front view.

Figure 21 is the figure for the moving contact maintaining part for representing the electromagnetic relay that the 9th embodiment of the present invention is related to, (a) it is side view, (b) is front view.

【Symbol description】

1 electromagnetic relay

10 electromagnet assemblies

16 armature

20th, 20A convex portions

21 moving contact portions

21a moving contacts (the first moving contact, the second moving contact)

22 fixed contact portions

22a fixed contacts

24 fluid springs (moving contact maintaining part)

The maintaining parts of 24A first

The maintaining parts of 24B second

24C linking parts

28 slits

Embodiment

Hereinafter, referring to the drawings, embodiments of the present invention are explained.It should be noted that it is following, by electromagnetism relay The side that the formation of device has electromagnet assembly is defined as on front side of fore-and-aft direction, by one provided with moving contact portion and fixed contact portion Side mark is set on rear side of fore-and-aft direction.In addition, the direction for installing housing is defined as into above-below direction.Also, will with fore-and-aft direction and The orthogonal direction of above-below direction is defined as width.

In addition, including same inscape in following multiple embodiments.Therefore, below, it is same to these The shared symbol of inscape mark, and the repetitive description thereof will be omitted.

[first embodiment]

Fig. 1~Fig. 8 is the figure for the first embodiment for representing electromagnetic relay of the present invention.As shown in fig. 7, this reality The electromagnetic relay 1 for applying mode possesses housing 2, matrix 30, electromagnet assembly 10, armature 16, moving contact portion 21 and fixes tactile Point portion 22.

Matrix 30 as the synthetic resin of insulating materials by forming, as shown in figure 5, being in the case where substantially central portion possesses vertical view Substantially U-shaped insulation wall 31.It is formed with the front-surface side (Fig. 7 left side) of the insulation wall 31 and stores electromagnet assembly 10 Electromagnet incorporating section 34.On the other hand, wall portion 32 is provided with back-surface side (Fig. 7 right side), so as to be formed by the He of insulation wall 31 The contact incorporating section 33 that wall portion 32 is surrounded.Moving contact portion 21 and fixed contact portion 22 are equipped in contact incorporating section 33.Separately Outside, insulation wall 31 has the effect for separating electromagnet assembly 10 and contact portion (moving contact portion 21 and fixed contact portion 22).

Electromagnet assembly 10 is made up of yoke 14, coil block 11 and iron core 15.

The bending of yoke 14 is shaped generally as L-shaped, is placed with the bottom plate 14a of yoke 14 by the way that coil 12 is wound into peace Loaded on coil block 11 formed by coil rack 13.In addition, the coil terminals 19 that coil 12 is arranged at matrix 30 with implantation connect Connect.Iron core 15 possess main part 15b, main part 15b header arrangement flange shape suction sheet 15a, and the iron core 15 with Main part 15b through the through hole 13a of coil rack 13 state are fixed on the bottom plate 14a of yoke 14 mounting hole 14b.

Armature 16, which possesses pole piece 16a and hung down, sets piece 16b, by pole piece 16a and hangs down and sets piece 16b and be formed as L-shaped. In the present embodiment, armature 16 is extended to top and generally in a horizontal direction under side view observation with pole piece 16a, hanging down sets piece 16b is to bottom and the mode that is substantially extends in the vertical direction is configured to inverted L shape.Also, by making from the upper end two of yoke 14 The holding piece 14c that side is provided projectingly engages with the notch recesses 16c formed in pole piece 16a both sides, so that by 16, armature Hold to swing freely.The pole piece 16a configurations of the armature 16 are in the position opposed with the suction sheet 15a of iron core 15.

Hinge spring 18 is installed between armature 16 and yoke 14, and the top to insulation division 17 described later is formed with top The spring leaf 18a pressed.Also, to coil 12 be not powered on it is non-energized when the non-excitation of electromagnet assembly 10 (when), By spring leaf 18a pressing force, the pole piece 16a of armature 16 is protected with the states pulled open of the suction sheet 15a from iron core 15 Hold.On the other hand, in the energization being powered to coil 12 (during the excitation of electromagnet assembly 10), the suction sheet 15a's of iron core 15 Magnetic force overcomes spring leaf 18a pressing force, so that the pole piece 16a of armature 16 is contacted with the suction sheet 15a of iron core 15.

Also, the moving contact portion 21 swung with the action (swing) of such armature 16 is via insulation division 17 It is installed on the vertical of armature 16 and sets piece 16b.

Moving contact 21a is provided with the moving contact portion 21, passes through pendulum of the moving contact 21a with moving contact portion 21 It is dynamic and contact or separate with the fixed contact 22a being arranged in fixed contact portion 22, thus carry out contact change-over.

In the present embodiment, moving contact portion 21 possesses：Set via insulation division 17 installed in the vertical of armature 16 on piece 16b Stator 23；One side links with the stator 23, and movable provided with a pair (multiple) moving contact 21a in another side Spring (moving contact maintaining part) 24.

The fluid spring 24 of present embodiment possesses：Company vertically extending and that mounting hole 24d is formed with upper end Sheeting 24a；The in the horizontal direction and rearward extended bottom plate 24b from connecting piece 24a lower end；From bottom plate 24b rear end The standing piece 24c erected upward.

Also, moving contact 21a is fixed in standing piece 24c in the way of towards rear.In the present embodiment, bottom plate 24b is in be branched off into two strands of shape, and is respectively formed with standing piece 24c in the rear end of each component.By being formed as so Moving contact portion 21, thus moving contact 21a turn into the state that is rearward protruded than insulation division 17, and moving contact 21a with Insulation division 17 is not overlapping under vertical view.

Also, as shown in fig. 6, the stator 23 and fluid spring 24 are respectively equipped with two groups.That is, in the electricity of present embodiment Provided with four moving contact 21a in magnetic relay 1.

Also, fixed contact portion 22 is made up of four fixed contact plates 26 for being respectively connected with a fixed contact 22a, and should Fixed contact portion 22 is installed on the contact incorporating section 33 of matrix 30.

Specifically, as shown in fig. 7, the bending of fixed contact plate 26 is formed as crank (crank) shape, in the fixed contact plate 26 upper end is connected with fixed contact 22a.It should be noted that fixed contact plate 26, which is not necessarily required to bending, is formed as crank shape, And can be formed as variously-shaped.It is, for example, possible to use fixed contact plate linearly under the side view formed without bending.

Also, fixed contact plate 26 is inserted from below by being located in fixed contact 22a in the state of top and rear Fixed contact plate 26, is thus installed on the contact incorporating section 33 of matrix 30 by contact incorporating section 33.Now, four fixed contact plates 26 distinguish opposed mode with four fixed contact 22a with four moving contact 21a installs.Also, it is not powered on to coil 12 It is non-energized when (during the non-excitation of electromagnet assembly 10), four fixed contact 22a and four moving contact 21a are in matrix 30 Back-surface side (Fig. 7 right side) separation of contact incorporating section 33 is arranged.On the other hand, (the electricity in the energization being powered to coil 12 During the excitation of magnet assemblies 10), and when moving contact portion 21 is swung, four moving contact 21a are to mutually opposing four Fixed contact 22a is close and is abutted with them.

In addition, in the present embodiment, forming electric arc elongate space S, electric arc elongate space S in electromagnetic relay 1 The electric arc elongation produced when making moving contact 21a contact or separate with fixed contact 22a.

Specifically, as shown in Fig. 2 being provided with wall portion 2a and side wall 2b in the inner side of housing 2.Also, covered with housing 2 When being provided with the matrix 30 of each component, (what is contacted with each other or separate touches by a pair corresponding moving contact 21a and fixed contact 22a Point) surrounded by wall portion 2a and side wall 2b.In the present embodiment, electric arc is turned into by wall portion 2a, side wall the 2b space being separated out Elongate space S.Now, fixed contact 22a and insulation division 17 are demarcated by wall portion 2a.

Also, it is provided with what is produced when moving contact 21a is contacted or separated with fixed contact 22a on electromagnetic relay 1 The permanent magnet 50 as magnetic field generation mechanisms that electric arc is guided to electric arc elongate space S.As shown in Figures 4 and 5, the permanent magnetic Iron 50 is set in the way of extending above and below paired moving contact 21a and fixed contact the 22a side of width one.And And, the electric arc that moving contact 21a is produced when contacting or separate with fixed contact 22a is under the magnetic action of permanent magnet 50 by electricity Elongate arc elongate space S top.

Also, around at least fixed contact portion 22 in electric arc elongate space S in the way of housing fixed contact 22a Electric arc extinguishing arc portion 40 is set.In the present embodiment, the electric arc extinguishing arc portion 40 is in the box being open downwards, to cover fixed touch Point 22a mode is inserted into electric arc elongate space S.It should be noted that being formed with the roof 42 of electric arc extinguishing arc portion 40 Small opening 42a, so that electric arc is easily accessible in electric arc elongate space S.

Also, electric arc extinguishing arc portion 40 is by that can produce the insulating materials shape of electric arc arc gas when being abutted with electric arc Into.It is used as the insulating materials for constituting the electric arc extinguishing arc portion 40, preferably unsaturated polyester (UP), the addition metal hydrogen-oxygen in chain compound Material obtained from compound or hydrate.

Also, the electric arc extinguishing arc for housing contact (paired moving contact 21a and fixed contact 22a) in a covered manner Portion 40 and permanent magnet 50 cover top and width two ends by magnetic screen yoke 60.The magnetic screen yoke 60 is used for suppression pair The situation that the other contacts of 50 pairs of permanent magnet that certain contact is worked play a role.

In addition, movable in electric arc elongate space S wall portion (wall portion 2a, side wall 2b and housing 2 side wall) is marked off The downside for the wall portion 2a that the side of spring 24 is set, is formed with the opening portion that can be inserted for standing piece 24c.In the present embodiment, Opening portion 2c and opening portion 41a are formed by the downside of the antetheca 41 in wall portion 2a downside and electric arc extinguishing arc portion 40 respectively, by The standing piece 24c for being formed with moving contact 21a can be inserted into electric arc elongate space S by this.

Here, in the present embodiment, to the above-mentioned fluid spring provided with a pair (multiple) moving contacts 21a, 21a (moving contact maintaining part) 24 is made an effort, to be able to ensure that the action of moving contact 21a, 21a independently.

Specifically, as shown in Fig. 8 (a), in the present embodiment, a pair of moving contact 21a in fluid spring 24, Slit 28 is formed between 21a.Slit 28 extends to connecting piece 24a from the bottom plate 24b of fluid spring 24 in the present embodiment Above-below direction approximately mid way between, the connecting piece 24a, bottom plate 24b and standing piece 24c of fluid spring 24 are branched off into two strands Shape.By such structure, the first maintaining part 24A and first that the first moving contact 21a is set is formed on fluid spring 24 Maintaining part 24A is separated and is set the second moving contact 21a the second maintaining part 24B.In addition, on fluid spring 24, can at this Move spring 24 one end be provided with above-mentioned first and second moving contact 21a, 21a, the other end be provided with by first keep The linking part 24C that portion 24A and the second maintaining part 24B links.

So, in the present embodiment, the first maintaining part 24A and the second maintaining part are made by being formed on fluid spring 24 First maintaining part 24A, is thus configured to relative to the second maintaining part 24B relative movements freely by the slit 28 of 24B separation.Cause This, the first maintaining part 24A and the second maintaining part 24B of fluid spring 24 can carry out separate from the rift portion of slit 28 Action.

In addition, in the present embodiment, fluid spring 24 is formed by chromium-copper.Chromium-copper has spring (elasticity), by this The fluid spring 24 of sample itself can also promote the first moving contact 21a and the second moving contact 21a self contained function (relative to move It is dynamic).

Also, in the present embodiment, the base end side (connecting piece 24a sides) of the bottom plate 24b in fluid spring 24 is set The notch 29 of semicircle shape.Notch 29 illustrates the first maintaining part 24A for being arranged on fluid spring 24 in Fig. 8 (a), only Side, but actually notch 29 is additionally arranged at the second maintaining part 24B sides.By such notch 29, first and can be made The standing piece 24c of two maintaining parts 24A, 24B is easily acted, between contact (paired moving contact 21a and fixed contact 22a) CONTACT WITH FRICTION (wiping) effect can be obtained.

Then, the contact action to the electromagnetic relay 1 of such structure is illustrated.

In the electromagnetic relay 1, when electromagnet assembly 10 is the state of non-excitation, the spring leaf 18a of hinge spring 18 The upper surface of insulation division 17 is pressed, thus armature 16 into Fig. 7 rotationally clockwise.Therefore, the magnetic of armature 16 Pole piece 16a turns into the state from the suction sheet 15a separation of iron core 15.In this condition, as shown in fig. 7, moving contact 21a and solid Fixed contact 22a is also separated.

When making 10 excitation of electromagnet assembly being powered to coil 12, produced by yoke 14, iron core 15 and armature 16 The magnetic force that the pole piece 16a of armature 16 is attracted to the suction sheet 15a of iron core 15.Now, the pole piece 16a of armature 16 overcomes hinge The spring force (pressing force) of chain spring 18 and by iron core 15 suction sheet 15a attract so that armature 16 is counterclockwise into Fig. 7 Direction is rotated.It is accompanied by this, fluid spring 24 is also moved counterclockwise, four moving contact 21a consolidate with opposed respectively Fixed contact 22a is contacted.

Stopping, to during the energization of coil 12, carrying out opposite action, so that 22a points of moving contact 21a and fixed contact From.

So, by the on/off for the energization for cutting commutating coil 12, so that moving contact 21a and fixed contact 22a Contact is separated, and electric arc is produced sometimes when moving contact 21a is contacted or separated with fixed contact 22a.

In the case of such generation electric arc, electric arc is guided from permanent magnet 50 to electric arc elongate space S.I.e., movably Space (electric arc elongate space of the electric arc that contact 21a is produced when contacting or separate with fixed contact 22a in electric arc extinguishing arc portion 40 S extended in).Now, electric arc is advanced and extended in the way of the inner surface of electric arc extinguishing arc portion 40 is licked to lick.That is, electric arc with electric arc The inner surface of extinguishing arc portion 40 extends while abutting.Therefore, the gas of electric arc extinguishing arc is produced from electric arc extinguishing arc portion 40, by this Gas is by electric arc extinguishing arc.

On the other hand, in the present embodiment, by setting above-mentioned electric arc elongate space S etc., thus, it is possible to improve electricity Arc interrupting performance, it is also possible to making moving contact 21a and fixed contact 22a depositions because of electric arc.Especially it is being arranged at and can moving In the case that deposition occurs for the moving contact 21a of the side in a pair of moving contacts 21a, 21a of spring 24, possibly it can not make in the past The moving contact 21a of opposite side with and its opposed fixed contact 22a contact.However, in the present embodiment, can solve the problem that this Problem.

That is, it is to install movable tactile without elasticity on fluid spring 24 in the past the conventional example as shown in Fig. 9 (a) Plate 25 is put as the structure of moving contact maintaining part.In such a configuration, it is believed that when side moving contact 21a depositions in During its opposed fixed contact 22a, by stopping the energization to coil 12, thus the spring force of hinge spring 18 is to moving contact Plate 25 is inputted, so that as shown in Fig. 9 (b), and moving contact plate 25 twists deformation.In such a state, though again to Coil 12 is powered and makes the excitation of electromagnet assembly 10, and because moving contact plate 25 is without elasticity, therefore moving contact plate 25 is in dimension Enter line slip movement while the state for holding the deformation (a pair of moving contacts 21a, 21a are integrally acted).Thus, although it can make The moving contact 21a of side is contacted again with fixed contact 22a, but the moving contact 21a and fixed contact 22a of opposite side turn into The state also separated even if energization, it is impossible to make the contact of above-mentioned opposite side contact again.

On the other hand, in the present embodiment, as shown in Fig. 8 (a), set on fluid spring 24 (moving contact maintaining part) Slit 28 is put, and fluid spring 24 is made up of elastomer, and the first maintaining part 24A is configured to relative to the second maintaining part 24B And relatively move freely.Therefore, the deformation even if fluid spring 24 twists, provided with a pair of moving contact (the first moving contacts With the second moving contact) 21a, 21a the first maintaining part 24A and the second maintaining part 24B can also carry out independent action respectively. Therefore, although the first maintaining part 24A moving contact (the first moving contact) 21a with and its opposed fixed contact 22a because turn round Change shape and turn into the state of separation, but as shown in Fig. 8 (b), the first maintaining part 24A progress can be made from the state by being powered Relatively move and be pressed into first maintaining part 24A.Thereby, it is possible to the moving contact that makes the first maintaining part 24A, (first movable touches Point) 21a with and its opposed fixed contact 22a contact again, the problem of can solve the problem that conventional.

As described above, in the present embodiment, is formed on fluid spring (moving contact maintaining part) 24 One maintaining part 24A, the second maintaining part 24B and linking part 24C, and the first maintaining part 24A is configured to relative to the second maintaining part 24B is relatively moved freely.Therefore, the first maintaining part 24A provided with the first moving contact 21a and provided with the second moving contact 21a The second maintaining part 24B be able to carry out independent action, so as to further improve reliability of contact.

In addition, in the present embodiment, being formed on fluid spring (moving contact maintaining part) 24 makes the first maintaining part 24A The slit 28 separated with the second maintaining part 24B.Therefore, it is possible to make the first maintaining part 24A and the second maintaining part 24B more reliably phase To movement, it is possible to increase the reliability of independent action.

In addition, in the present embodiment, because fluid spring (moving contact maintaining part) 24 is made up of elastomer, therefore energy Enough make fluid spring 24 that there is spring (elasticity), the first maintaining part 24A and the second maintaining part 24B self contained function can be promoted (relative movement).In addition, so using as the fluid spring 24 of moving contact maintaining part by the case that elastomer is constituted, also With being readily obtained advantage as CONTACT WITH FRICTION effect.It should be noted that CONTACT WITH FRICTION effect refer to it is (paired in contact Moving contact 21a and fixed contact 22a) after contact, moving contact 21a is slided and struck off on fixed contact 22a surfaces raw Into impurity etc. effect.

Especially in the present embodiment, cut due to being provided with the bottom plate 24b for the fluid spring 24 being made up of elastomer Oral area 29, therefore, it is possible to easily act the standing piece 24c provided with moving contact 21a, so as to more reliably be rubbed Contact effect.

In addition, in the present embodiment, first and second moving contact 21a, 21a are arranged on into fluid spring (movable to touch Point maintaining part) 24 one end, and linking part 24C is arranged on to the other end of fluid spring (moving contact maintaining part) 24. Therefore, can be by the first maintaining part 24A compared with linking part 24C to be for example arranged on to the structure of pars intermedia of fluid spring 24 With the second maintaining part 24B longer ground branch, so as to make the first maintaining part 24A and the second maintaining part 24B easily with respect to movement.

Then, 10~Figure 12 of reference picture, the variation for the moving contact maintaining part being related to first embodiment is said It is bright.

Figure 10 is the figure of the first variation for the fluid spring 24A for being denoted as moving contact maintaining part, this variation with The main difference of above-mentioned first embodiment is, the reducing diameter part set on the linking part 24C of fluid spring 24 is abolished.

In this variation of structure more than, the effect same with above-mentioned first embodiment, effect can be also obtained.

It is and above-mentioned it should be noted that in the case where connecting piece 24a is formed as into rectangular shape as this variation The fluid spring 24 provided with reducing diameter part of first embodiment is compared, although spring constant becomes big, but being capable of easy to manufacture.

Figure 11 is the figure of the second variation for the fluid spring 24B for being denoted as moving contact maintaining part, this variation with The main difference of above-mentioned first variation is, the hole portion 28a of arc-shaped is provided with the crack of slit 28.

In this variation of structure more than, it can also obtain same with above-mentioned first embodiment and the first variation Effect, effect.

Figure 12 is the figure for the 3rd variation for representing moving contact maintaining part, this variation and above-mentioned first embodiment Main difference is, the moving contact plate 25 as moving contact maintaining part is provided with fluid spring 24.

This variation is same with conventional example, be formed as being mounted with fluid spring 24 provided with a pair of moving contact 21a, The structure of 21a moving contact plate 25, but it is formed with slit 28 on fluid spring 24 and moving contact plate 25.

That is, fluid spring 24 possesses the connecting piece 24a of the branch via slit 28, and moving contact plate 25 possesses installation A pair of web 25a, bottom plate 25b and standing piece 25c on the connecting piece 24a of the branch.

In this variation of structure more than, it can also obtain deforming with above-mentioned first embodiment and first, second The same effect of example, effect.

It should be noted that in the case of this variation, part number of packages adds the amount of moving contact plate 25.Change speech It, is only being made up of in the above-mentioned first embodiment and first, second variation of moving contact maintaining part fluid spring 24, tool Advantage as part number of packages can be cut down by having.

[second embodiment]

Electromagnetic relay 1A of the present embodiment is with substantially same with the electromagnetic relay 1 of above-mentioned first embodiment The structure of sample.

I.e., as shown in figure 13, the electromagnetic relay 1A of present embodiment possess housing 2, matrix 30, electromagnet assembly 10, Armature 16, moving contact portion 21, fixed contact portion 22, electric arc elongate space S and the permanent magnet 50 as magnetic field generation mechanisms.

Here, the electromagnetic relay 1 of the electromagnetic relay 1A of present embodiment and above-mentioned first embodiment it is main not It is with putting, electric arc extinguishing arc portion 40 is not provided with electric arc elongate space S.

In the present embodiment of structure more than, it can also play a part of, effect same with above-mentioned first embodiment Really.That is, the electricity of the electric arc produced when by permanent magnet 50 moving contact 21a can be made to contact or separate with fixed contact 22a Arc length elongation, can further improve electric arc arc performance (electric arc interrupting performance).

Even if in addition, making the moving contact 21a set on moving contact plate 25 (moving contact maintaining part) because of electric arc In side (such as the second moving contact 21a) occur deposition, due to being formed with slit 28 on moving contact plate 25, therefore, Also can make the first maintaining part 24A provided with a pair of moving contacts (the first moving contact and the second moving contact) 21a, 21a and Second maintaining part 24B carries out independent action respectively, so as to further improve reliability of contact.

It should be noted that in the present embodiment, being applicable the moving contact maintaining part that above-mentioned 3rd variation is related to (structure that moving contact plate 25 is provided with fluid spring 24), but can certainly be applicable above-mentioned first embodiment or on State the moving contact maintaining part (fluid spring 24,24A, 24B) that first, second variation is related to.

In addition, in the electromagnetic relay 1A shown in Figure 13, wall portion 2a can be by that can produce electricity when being abutted with electric arc Insulating materials (with the identical material of electric arc extinguishing arc portion 40 shown in the above-mentioned first embodiment) formation of arc arc gas, and Wall portion 2a doubles as electric arc extinguishing arc portion.Can be as the electric arc extinguishing arc portion 40 shown in above-mentioned first embodiment in addition, housing 2 is overall Identical material is formed.

[the 3rd embodiment]

Electromagnetic relay 1B of the present embodiment has with above-mentioned second embodiment in electric arc elongate space S It is not provided with the substantially same structures of the electromagnetic relay 1A of electric arc extinguishing arc portion 40.

Here, the electromagnetic relay 1A of the electromagnetic relay 1B of present embodiment and above-mentioned second embodiment it is main not It is with putting, as shown in figure 14, provided with the separates walls 70 split to electric arc elongate space S.

Specifically, in the present embodiment, the sky that the wall portion 2a and side wall 2b formed by the inner side in housing 2 is separated out Between turn into electric arc elongate space S.Also, a pair are configured with each electric arc elongate space S being separated out corresponding movable to touch Point 21a and fixed contact 22a (contact for contacting with each other or separating), and it is respectively equipped with separates walls in each electric arc elongate space S 70。

In the present embodiment, separates walls 70 are provided projectingly from the upper wall portions 2d of housing 2 towards fixed contact 22a sides, will Prolonging directions of the electric arc elongate space S along electric arc A is longitudinally divided into two parts.

It should be noted that in the present embodiment, a separates walls 70 are set respectively in each electric arc elongate space S, Electric arc elongate space S is divided into two parts, but it is also possible to which multiple separates walls 70 are set respectively in each electric arc elongate space S, Electric arc elongate space S is divided into more than three parts.

Present embodiment more than, can also play a part of, effect same with first and second above-mentioned embodiment Really.

In addition, in the present embodiment, provided with the separates walls 70 split to electric arc elongate space S.Therefore, with it is above-mentioned First and second embodiment is compared, and electric arc A can be made to unroll separates walls 70 and electric arc A length is further increased, So as to further improve electric arc arc performance (electric arc interrupting performance).

In addition, if so improving electric arc arc performance (electric arc interrupting performance), can be in moving contact 21a with improving Advantage as the voltage that the cut-off voltage separated between fixed contact 22a is produced between two contact 21a, 22a.

In addition, in the present embodiment, the space that the wall portion 2a formed by the inner side in housing 2 and side wall 2b are separated out As electric arc elongate space S, and the setting separates walls 70 in electric arc elongate space S.Therefore, it is excellent also with as follows Point：Electric arc elongate space S-shaped can be made to turn into the extinguishing arc bulk same with first and second above-mentioned embodiment, and simultaneously Increase electric arc A length.Therefore, electromagnetic relay 1B miniaturization is contributed to.

[the 4th embodiment]

Electromagnetic relay 1C of the present embodiment has extends sky with being provided with for above-mentioned 3rd embodiment to electric arc Between the substantially same structures of the electromagnetic relay 1B of separates walls 70 split of S.

Here, the electromagnetic relay 1B of the electromagnetic relay 1C of present embodiment and above-mentioned 3rd embodiment it is main not It is with point, as shown in figure 15, jog 73 is provided with the wall faced with electric arc elongate space S.

Specifically, in the present embodiment, the sky that the wall portion 2a and side wall 2b formed by the inner side in housing 2 is separated out Between also turn into electric arc elongate space S.Also, be configured with each electric arc elongate space S being separated out a pair it is corresponding movable Contact 21a and fixed contact 22a (contact for contacting with each other or separating), and the setting separation respectively in each electric arc elongate space S Wall 70 and jog 73.

In the present embodiment, jog 73 is formed in the wall faced with electric arc elongate space S the i.e. upper wall portions of housing 2 On 2d inner surface.Also, by so housing 2 upper wall portions 2d across separates walls 70 and the left and right sides set jog 73, the concave and convex surfaces of jog 73 are thus formed along electric arc A prolonging direction.

Present embodiment more than, can also play a part of, effect same with the above-mentioned first~the 3rd embodiment Really.

In addition, in the present embodiment, jog 73 is provided with the wall faced with electric arc elongate space S.Therefore, with Above-mentioned 3rd embodiment is compared, and electric arc A can be made to unroll jog 73 and electric arc A length is further increased, from And can further improve electric arc arc performance (electric arc interrupting performance).Also, relative to above-mentioned 3rd embodiment, additionally it is possible to Further improve cut-off voltage.

In addition, in the present embodiment, because the prolonging direction along electric arc A forms jog 73, therefore, it is possible to make Electric arc A more reliably enters jog 73, can reliably increase electric arc A length.

It should be noted that in the present embodiment, will be applied to be provided with separates walls as the jog 73 of characteristic 70 above-mentioned 3rd embodiment, but it is also possible to first and second above-mentioned embodiment suitable for being not provided with separates walls 70.

[the 5th embodiment]

Electromagnetic relay 1D of the present embodiment has with above-mentioned second embodiment in electric arc elongate space S It is not provided with the substantially same structures of the electromagnetic relay 1A of electric arc extinguishing arc portion 40.

Here, the electromagnetic relay 1A of the electromagnetic relay 1D of present embodiment and above-mentioned second embodiment it is main not It is with putting, as shown in figure 16, provided with the separates walls 70A for being partitioned into electric arc elongate space S1, S2.

Specifically, in the present embodiment, the opening portion 2c formed in wall portion 2a downside is than above-mentioned second embodiment party Formula is widened to upside.Also, make wall portion 2a as separates walls 70A function, will be from separates walls 70A to fixed contact 22a The space of side (Figure 16 right side) as the first electric arc elongate space S1, and will from separates walls 70A to insulation division 17 sides (Figure 16's Left side) space be used as the second electric arc elongate space S2.Therefore, in the present embodiment, moving contact 21a corresponding with a pair And fixed contact 22a is corresponded to and formed multiple first electric arc elongate space S1, in contrast, the second electric arc elongate space S2 is in shell The inner side of body 2 only forms one and shared.

Present embodiment more than, can also play a part of, effect same with the above-mentioned first~the 4th embodiment Really.

In addition, in the present embodiment, setting the separates walls 70A for being partitioned into electric arc elongate space S1, S2.Therefore, with it is upper State the first~the 4th embodiment to compare, electric arc A can be made to unroll separates walls 70A and electric arc A length is further increased It is long, so as to further improve electric arc arc performance (electric arc interrupting performance).Also, implement relative to the above-mentioned first~the 4th Mode, additionally it is possible to further improve cut-off voltage.

It should be noted that in the present embodiment, by separates walls 70A be partitioned into electric arc elongate space S1, S2 this two Part, but it is also possible to the separates walls 70 of additional above-mentioned 3rd embodiment for example in the first electric arc elongate space S1, and by electricity Arc elongate space is divided into more than three parts.

[the 6th embodiment]

Electromagnetic relay 1E of the present embodiment has to be stretched provided with being partitioned into electric arc with above-mentioned 5th embodiment Structure substantially same long spacing S1, S2 separates walls 70A electromagnetic relay 1D.

Here, the electromagnetic relay 1D of the electromagnetic relay 1E of present embodiment and above-mentioned 5th embodiment it is main not It is with point, as shown in figure 17, jog 73 is provided with the wall faced with electric arc elongate space S1, S2.

Specifically, in the present embodiment, also the opening portion 2c formed in wall portion 2a downside is widened to upside, and Make wall portion 2a as separates walls 70A function.Also, it regard the space of the side from separates walls 70A to fixed contact 22a as One electric arc elongate space S1, using the space of 17 sides from separates walls 70A to insulation division as the second electric arc elongate space S2, and upper Jog 73 is set respectively in first and second electric arc elongate space S1, the S2 stated.

In the present embodiment, jog 73 be respectively formed at as with electric arc elongate space S1, S2 face it is wall, On the face of the side of fluid spring 24 of the upper wall portions 2d of housing 2 inner surface and the median wall 35 of matrix 30.Also, above-mentioned a pair Jog 73 forms the concave and convex surfaces of jog 73 all along electric arc A prolonging direction.

Present embodiment more than, can also play a part of, effect same with the above-mentioned first~the 5th embodiment Really.

In addition, in the present embodiment, jog 73 is set on the wall faced with electric arc elongate space S1, S2.Cause This, compared with above-mentioned 5th embodiment, can make electric arc A unroll jog 73 and electric arc A length is further increased It is long, so as to further improve electric arc arc performance (electric arc interrupting performance).Also, relative to above-mentioned 5th embodiment, Cut-off voltage can also further be improved.

In addition, in the present embodiment, due to the prolonging direction formation jog 73 along electric arc A, therefore, it is possible to make electricity Arc A more reliably enters jog 73,73, can reliably increase electric arc A length.

[the 7th embodiment]

Electromagnetic relay 1 of the present embodiment is with substantially same with the electromagnetic relay 1 of above-mentioned first embodiment The structure of sample.

That is, the electromagnetic relay 1 of present embodiment possesses housing 2, matrix 30, electromagnet assembly 10, armature 16, movable touched Point portion 21, fixed contact portion 22, electric arc elongate space S and the permanent magnet 50 as magnetic field generation mechanisms.

, should also, as shown in Fig. 7 and Figure 18 (a), (b), moving contact portion 21 possesses the stator (fixed part) 23 of tabular Stator 23 is configured in the mode overlapping with least linking part 24C of fluid spring (moving contact maintaining part) 24, and with the company Knot 24C upper end (leading section) 24f engagements.

It should be noted that as described above, being formed with a pair of mounting hole 24d (references in the upper end 24f of fluid spring 24 Fig. 8 (a)), the mounting hole (not shown) of mounting hole 24d and stator 23 for example carries out riveting engagement by fixing component 27. Stator 23 is installed on the vertical of armature 16 and sets piece 16b via insulation division 17, thus, the moving contact with the swing of armature 16 The stator 23 and fluid spring 24 in portion 21 are integratedly swung.

Here, the main difference of the electromagnetic relay 1 of present embodiment and the electromagnetic relay 1 of above-mentioned first embodiment Point is that either one in opposed faces 24g, 23a overlapping with stator 23 of fluid spring 24 is provided with convex portion 20.

Specifically, as shown in Figure 18 (a), (b), in the present embodiment, set on the opposed faces 23a of stator 23 Convex portion 20, and the convex portion 20 from opposed faces 23a towards the side of fluid spring 24 in section arc-shaped it is prominent.Now, it is preferably convex Portion 20 is arranged on the end of the side opposite with linking part 24C upper end (leading section) 24f sides in a pair of opposed faces 24g, 23a On 23b.

Figure 19 is the figure for the action for representing fluid spring 24, and (a) is to represent to meet moving contact 21a and fixed contact 22a The figure of action during tactile connection, action when (b) is the disconnection for representing to separate moving contact 21a and fixed contact 22a Figure.

When being powered to coil 12 and the pole piece 16a of armature 16 is attracted on the suction sheet 15a of iron core 15, it can move Spring 24 is interlocked from Fig. 7 state and armature 16 and the direction of arrow a to Figure 19 (a) is rotated, so that moving contact 21a and fixation Contact 22a contacts and turned into the state connected.On the other hand, when energization of the stopping to coil 12, opposite action is carried out, can Move that spring 24 and armature 16 are interlocked and the direction of arrow b to Figure 19 (b) is rotated, so that moving contact 21a and fixed contact 22a Separate and as the state disconnected, returned to Fig. 7 state.

Now, in the present embodiment, any in opposed faces 24g, 23a overlapping with stator 23 of fluid spring 24 Side sets convex portion 20.Therefore, moving contact 21a and fixed contact 22a is made to occur deposition because of electric arc like that even in above-mentioned In the case of, lower moving contact also to arrow b directions (that is, can be dragged from fixed contact 22a to fluid spring 24 by convex portion 20 21a direction) active force.Thus, the fluid spring 24 of the original state shown in double dot dash line is acted on by making convex portion 20, thus Lower moving contact 21a easily can be dragged from fixed contact 22a, so as to further improve reliability of contact.

Present embodiment more than, can also play a part of, effect same with the above-mentioned first~the 6th embodiment Really.

In addition, in the present embodiment, moving contact portion 21 possesses stator (fixed part) 23, the stator 23 with can The overlapping modes of at least linking part 24C of spring (moving contact maintaining part) 24 of moving are configured, and with linking part 24C upper end (leading section) 24f is engaged.Also, in opposed overlapping with stator (fixed part) 23 of fluid spring (moving contact maintaining part) 24 Either one in face 24g, 23a sets convex portion 20.Therefore, in moving contact 21a from the disconnections of the fixed contact 22a contacts separated When, shown in such as Figure 19 (b), (lower movable can be dragged from fixed contact 22a to arrow b directions to fluid spring 24 by convex portion 20 Contact 21a direction) active force.Thus, in the case of moving contact 21a and fixed contact 22a depositions is made because of electric arc, Also lower moving contact 21a easily can be dragged from fixed contact 22a, so as to further improve reliability of contact.

Also, in the present embodiment, by convex portion 20 be arranged in a pair of opposed faces 24g, 23a with linking part 24C's On the end 23b of the opposite side in upper end (leading section) 24f sides.Therefore, it is possible to make convex portion 20 to the portion of the applying power of fluid spring 24 Position is more prone to drag lower moving contact 21a from fixed contact 22a closer to contact side therefore, it is possible to increase drag force.

In addition, in the present embodiment, the convex portion 20 set on the opposed faces 23a of stator 23 is formed as into section circle Arcuation.Therefore, when being contacted in convex portion 20 with the opposed faces 24g of fluid spring 24, convex portion 20 or opposed opposed faces can be suppressed The scraping equivalent damage of 24g sides, and simultaneously can the convex portion 20 protruded in section arc-shaped front effectively to pulling side To applying power.

[the 8th embodiment]

Electromagnetic relay 1 of the present embodiment is with substantially same with the electromagnetic relay 1 of above-mentioned 7th embodiment The structure of sample.

Here, the main difference of the electromagnetic relay 1 of present embodiment and the electromagnetic relay 1 of above-mentioned 7th embodiment Point is, stator (fixed part) 23A is extended into the first maintaining part with fluid spring (moving contact maintaining part) 24 24A and the overlapping positions of the second maintaining part 24B.

Specifically, as shown in Figure 20 (a), (b), in the present embodiment, also set on the opposed faces 23a of stator 23 Put convex portion 20, and the convex portion 20 from opposed faces 23a towards the side of fluid spring 24 in section arc-shaped it is prominent.In addition, convex portion 20 are arranged on the end 23b of the side opposite with linking part 24C upper end (leading section) 24f sides in a pair of opposed faces 24g, 23a On.

Also, stator 23A is extended and the first maintaining part 24A that two strand are branched off into from linking part 24C and Position overlapping two maintaining part 24B, is extended the bottom plate 24b of fluid spring 24 vicinity in the present embodiment.

Present embodiment more than, can also play a part of, effect same with the above-mentioned first~the 7th embodiment Really.That is, can be by convex portion 20 to fluid spring 24 in disconnections of the moving contact 21a from the fixed contact 22a contacts separated To the direction active force that lower moving contact 21a is dragged from fixed contact 22a.Therefore, even in make because of electric arc moving contact 21a and In the case that deposition occurs for fixed contact 22a, also lower moving contact 21a easily can be dragged from fixed contact 22a, can be further Improve reliability of contact.

In addition, in the present embodiment, stator (fixed part) 23A is extended and fluid spring (moving contact Maintaining part) 24 the overlapping position of the first maintaining part 24A and the second maintaining part 24B.Therefore, it is possible to make convex portion 20 to fluid spring The position of 24 applying powers is further easy from fixed contact 22a therefore, it is possible to increase drag force further close to contact side Drag lower moving contact 21a.

[the 9th embodiment]

Electromagnetic relay 1 of the present embodiment has the electromagnetic relay 1 with above-mentioned 7th and the 8th embodiment Substantially same structure.

Here, the master of the electromagnetic relay 1 of present embodiment and the electromagnetic relay 1 of above-mentioned 7th and the 8th embodiment Want difference to be, convex portion 20A, and convex portion 20A are set on the opposed faces 24g of fluid spring (moving contact maintaining part) 24 From opposed faces 24g towards the side of stator (fixed part) 23 in section arc-shaped it is prominent.

As shown in Figure 21 (a), (b), convex portion 20A is formed by the way that a part for fluid spring 24 is bent, in this implementation In mode, convex portion 20A is also disposed at upper end (leading section) 24f sides phase with linking part 24C in a pair of opposed faces 24g, 23a On the end 23b tossed about.

Also, when in the present embodiment, under moving contact 21a dragging, convex portion 20A and stator 23 opposed faces 23a is contacted, and the power for pulling direction is thus inputted to fluid spring 24.

Present embodiment more than, can also play a part of, effect same with the above-mentioned first~the 8th embodiment Really.That is, can be by convex portion 20A to fluid spring in disconnections of the moving contact 21a from the fixed contact 22a contacts separated 24 to the direction active force that lower moving contact 21a is dragged from fixed contact 22a.Therefore, even in because electric arc make moving contact 21a and In the case of fixed contact 22a depositions, also lower moving contact 21a easily can be dragged from fixed contact 22a, can further improved Reliability of contact.

It should be noted that in the present embodiment, convex portion 20A is arranged on the linking part 24C of fluid spring 24, but Convex portion 20A can certainly be arranged on the first maintaining part 24A and the second maintaining part 24B, and stator 23 is extended To the position overlapping with the first maintaining part 24A and the second maintaining part 24B.

More than, to being preferred embodiment illustrated for the present invention, but the present invention is not defined to above-mentioned embodiment party Formula, can carry out various modifications.

For example, in the respective embodiments described above, being illustrated and moving contact portion 21 being installed on into rank via insulation division 17 The structure of iron 16, but it is also possible to moving contact portion 21 is installed on armature 16 not via insulation division 17.

In addition, in electromagnetic relay 1A~1E that the above-mentioned second~the 6th embodiment is related to, being applicable the above-mentioned 3rd The moving contact maintaining part that variation is related to (installs the moving contact plate 25 as moving contact maintaining part on fluid spring 24 Structure).But, it is not limited to this, naturally it is also possible to be applicable above-mentioned first embodiment or above-mentioned first, second variation The moving contact maintaining part (fluid spring 24,24A, 24B) being related to.

In addition, convex portion 20 or convex portion 20A can be arranged on fluid spring 24 and solid one or not by way of consubstantiality Either one in overlapping opposed faces 24g, 23a of stator 23.

In addition, the specification (shape, size, layout etc.) of armature 16, hinge spring 18 or other discreet portions can also be fitted When being changed.

Claims (6)

1. a kind of electromagnetic relay, it is characterised in that possess：

Armature, its excitation, non-excitation by electromagnet assembly and swung；

Moving contact portion, it possesses the moving contact maintaining part provided with multiple moving contacts, and is installed on the armature and adjoint The swing of the armature is swung；

Fixed contact portion, its have with the multiple movable contact contacts or the multiple fixed contacts separated,

The moving contact maintaining part possesses the first maintaining part provided with the first moving contact and first holding part from simultaneously And the linking part for being provided with the second maintaining part of the second moving contact, linking first maintaining part and second maintaining part,

First maintaining part and second maintaining part of the moving contact maintaining part possess：Link with the linking part, Vertically extending and lower end is branched off into two strands of connecting piece；Divide in the horizontal direction and rearward from the lower end of the connecting piece Not Yan Shenshezhi a pair of bottom plates；Erect and be respectively equipped with an opposition of the moving contact upward from the rear end of each bottom plate Playing piece,

The moving contact maintaining part be formed with make first maintaining part and second holding part from slit,

The moving contact maintaining part is made up of elastomer,

When the multiple moving contact and the multiple fixed contact are contacted, first maintaining part is configured to relative to described Second maintaining part and action freely can be relatively moved.

2. electromagnetic relay according to claim 1, it is characterised in that

First moving contact and the second moving contact are arranged on the one end of the moving contact maintaining part, and the company Knot is arranged on the other end of the moving contact maintaining part.

3. electromagnetic relay according to claim 1 or 2, it is characterised in that

The moving contact portion possesses fixed part, and the fixed part is with least described linking part weight with the moving contact maintaining part Folded mode is configured, and is engaged with the leading section of the linking part,

Either one in the moving contact maintaining part opposed faces overlapping with the fixed part is provided with convex portion.

4. electromagnetic relay according to claim 3, it is characterised in that

The convex portion is arranged on the end of the side opposite with the leading section side of the linking part in the opposed faces.

5. electromagnetic relay according to claim 3, it is characterised in that

The fixed part is extended overlapping with first maintaining part of the moving contact maintaining part and the second maintaining part Position.

6. electromagnetic relay according to claim 3, it is characterised in that

The convex portion is formed as section arc-shaped.