CN103715026B - A kind of contact is biased the electromagnetic relay of placement - Google Patents
A kind of contact is biased the electromagnetic relay of placement Download PDFInfo
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- CN103715026B CN103715026B CN201210382424.XA CN201210382424A CN103715026B CN 103715026 B CN103715026 B CN 103715026B CN 201210382424 A CN201210382424 A CN 201210382424A CN 103715026 B CN103715026 B CN 103715026B
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Abstract
The invention discloses the electromagnetic relay that a kind of contact is biased placement, comprise the combination of magnetic circuit part, base, push card part and quiet spring; The combination of quiet spring comprise often open, normally closed quiet spring combination; Magnetic circuit part comprises coil, yoke and armature part, and during excitation, armature part is rotated forward or backwards and driven push card part along moving forward or backwards; Push card part comprises push card, Chang Kai, normally closed contact chip part and spring; Chang Kai, normally closed moving contact with often open, normally closed fixed contact is respectively corresponding; In being immediately, push card is contained on base armature part, and it is unequal often to start contact and the contact gap L1 often opened between fixed contact and the contact gap L2 between normally closed moving contact and normally closed fixed contact.This structure makes relay after mounting without the need to special adjustment, just can guarantee that normally opened contact end and normally-closed contact end obtain the indexs such as identical contact overtravel, contact force when set and release (involution), thus guarantee that normally opened contact end is consistent with the electric property of normally-closed contact end.
Description
Technical field
The present invention relates to a kind of electromagnetic relay, particularly relate to the electromagnetic relay that a kind of contact is biased placement.
Background technology
As shown in Figure 1, Fig. 1 is the structural representation of current typical a kind of electromagnetic relay to existing electromagnetic relay, and it is made up of magnetic circuit part, base portion and push card part; Wherein, base portion comprises base 16 ＇, often opens quiet spring combination 17A ＇, normally closed quiet spring combination 17B ＇, often starts spring combination 18A ＇, normally closed dynamic spring combination 18B ＇ and reset reed 20 ＇; Magnetic circuit part is made up of coil 12 ＇, yoke 13 ＇ and armature part 14 ＇; Metal rotating shaft 19 ＇ of armature part 14 ＇ Ke Yanqi center plug-in mounting rotates; Push card part is taken on by push card 15 ＇ of a band draw-in groove.When coil 12 ＇ is energized the rotation of rear drive armature, armature drives push card to promote dynamic spring aggregate motion, thus make often to open quiet spring combination 17A ＇ and often to start the normally opened contact that spring combine on 18A ＇ closed, the normally-closed contact simultaneously making normally closed quiet spring combination 17B ＇ and normally closed dynamic spring combine on 18B ＇ is opened, and realizes the switching of contact; When coil 12 ＇ does not apply excitation, at reset reed 20 ＇ with often start spring combination 18A ＇, under the effect of mechanical counter-force that normally closed dynamic spring combination 18B ＇ provides jointly, push card 15 ＇ is pushed back original position (shown in Fig. 1 position), thus drive and often start spring combination 18A ＇ and often open the normally opened contact group that quiet spring combines on 17A ＇ and open, make the normally-closed contact group on normally closed quiet spring combination 17B ＇ and normally closed dynamic spring combination 18B ＇ close simultaneously, realize the switching of contact.
The armature part that Fig. 2 (a) is existing electromagnetic relay is in neutral condition (so-called neutral condition here, refer to that armature part does not all tilt in positive direction or a reciprocal arbitrary direction relative to push card, and armature part is parallel to magnetic circuit part, now armature part is in vertical state) time schematic diagram, now, two moving contact 181 ＇, 182 ＇ are equal to distance L1 and the L2 of two fixed contact 171 ＇, 172 ＇.The armature part that Fig. 2 (b) is existing electromagnetic relay is in schematic diagram during release condition, the armature part that Fig. 2 (c) is existing electromagnetic relay and the schematic diagram that coordinates between push card, wherein, armature part 14 ＇ of solid line represents and is in off-position N, and armature part 14 ＇ of dotted line represents and is in set position M; When coil electricity or power-off, as shown in Fig. 2 (b), armature part 14 ＇ rotates forward or the identical angle value that reversed around its rotating shaft 19 ＇, makes relay realize the function of normally opened contact closed (normally-closed contact disconnection) or normally opened contact disconnection (normally-closed contact closes).
The deficiency of this kind of structure is:
1, when armature part is in neutral condition, cental axial position and armature part due to its armature part are used for the line of hook position that coordinates with push card and the direction of motion out of plumb of push card, but there is a deviant S(as shown in Figure 2 (a) shows), therefore when armature part turns over identical angle forward or backward around its central shaft, its push card stroke moved forward and the stroke moved are not identical backward, for Fig. 2 (b), in the process of relay set and release, although its armature part is identical around its rotating shaft relative to the angle that its neutral condition turns over, but with the words that armature part neutral condition calculates for motion starting point, the stroke that its push card stroke of passing by relative to wherein vertical state when set and its push card are passed by relative to state of wherein standing when discharging is not identical, that is, the stroke that when stroke that moving contact 181 ＇ moves when set and release, moving contact 182 ＇ moves is not identical, thus cause the overtravel of normally opened contact 181 ＇ different from the overtravel of normally-closed contact 182 ＇, and often start spring due to it and normally closed dynamic spring is fixed on base, therefore it is different from the deformation quantity of normally closed dynamic spring by causing it often to start spring to apply different promotion strokes to its dynamic spring, thus cause that often to start spring different from the counter-force produced due to deformation of normally closed dynamic spring, thus cause the closing contact pressure of normally opened contact different from the closing contact pressure of normally-closed contact.Different due to contact overtravel and contact force, finally cause relay normally open contact different from the performance of normally-closed contact end, thus affect the consistency of relay performance; During actual production, rear adjustment has been assembled in normal employing, and to move spring identical with the contact overtravel and contact force that make relay normally open contact end and normally-closed contact end with the method for quiet spring, thus make normally opened contact end substantially identical with the performance of normally-closed contact end, but which affects production efficiency, and be difficult to the consistency ensureing product.
2, owing to being that the hook portion of armature part coordinates with push card, so link up with the power in the F1 direction produced push card as shown in Figure 2 (c) in set process, in dispose procedure, link up with power push card being produced to F2 direction, the direction of F1 and F2 is always the tangential direction that push card hook place moves in a circle around its rotating shaft.Because F1 and F2 is completely not parallel with the direction of motion (horizontal direction) of push card, therefore drive in the process of push card set and release in armature part, push card cannot do horizontal movement reposefully, play will be there is by the vertical direction in it, thus affect the kinetic stability of whole mechanism, shorten the service life of motion, and the moving contact that push card is driven produces play with its in the vertical direction, thus affect the electric property of relay.
Summary of the invention
The object of the invention is to the deficiency overcoming prior art, a kind of contact is provided to be biased the electromagnetic relay of placement, after mounting without the need to special adjustment, just can guarantee that normally opened contact end and normally-closed contact end obtain the indexs such as identical contact overtravel, contact force when set and release (involution), thus guarantee that normally opened contact end is consistent with the electric property of normally-closed contact end; And in the process of set and release (involution), the active force of armature part to push card is mainly the thrust of horizontal direction, ensure that push card is moved in the horizontal direction smooth-going and stable, thus avoid the play of moving contact in the vertical direction, improve the electricity function index of product.
The technical solution adopted for the present invention to solve the technical problems is: a kind of contact is biased the electromagnetic relay of placement, comprises the combination of magnetic circuit part, base, push card part and quiet spring; Magnetic circuit part comprises coil, yoke and armature part, and wherein, armature part is provided with the central rotating shaft that it can be made to rotate; Described quiet spring combination comprises often opens the combination of quiet spring and normally closed quiet spring combination, often opens the combination of quiet spring and normally closed quiet spring and combines and be made up of static contact spring piece and the fixed contact be fixed on static contact spring piece respectively; Described push card part comprises push card, often opens contact chip part and normally closed contact chip part, often open contact chip part and normally closed contact chip part to be made up of contact chip and the moving contact be fixed on contact chip respectively, often open contact chip and normally closed contact chip is arranged in push card respectively, and make often to start contact, normally closed moving contact and often open fixed contact, normally closed fixed contact is corresponding respectively; Armature part is provided with the connecting portion of center line when departing from neutral condition, one in push card is provided with the first draw-in groove, the connecting portion of armature part is engaged in the first draw-in groove of push card, when coil pass into forward or backwards exciting current time, armature part is around its central rotating shaft along rotating forward or backwards and driving push card part along moving forward or backwards; When the first draw-in groove of push card matches with the armature part of neutral condition, often start contact and the contact gap L1 often opened between fixed contact and the contact gap L2 between normally closed moving contact and normally closed fixed contact, meet formula: L1 ≠ L2.
Described connecting portion is arc-shaped structure, and the arc-shaped structure of armature part is engaged in the first draw-in groove of push card.
Described push card part also comprises spring, described contact chip by spring fitting in push card.
Described contact chip passes through two spring fittings in push card.
Be provided with the projection for being nested with described spring in described push card, one end and the described contact chip of described spring lean, and the other end of spring is nested with on described projection.
The inner side one side of described contact chip is provided with pit, and one end of described spring is embedded in the pit of described contact chip.
The end of described push card is provided with for movable the 3rd draw-in groove loading described contact chip, the holding tank for holding described spring is provided with in the inboard of the 3rd draw-in groove, described projection is located in holding tank, described contact chip is inserted in the 3rd draw-in groove of push card, and spring is opened between the inboard wall of the holding tank withstanding on contact chip and described push card.
Described moving contact is fixed on the outside one side of contact chip, and the afterbody of moving contact shows especially in the pit of the inner side of contact chip one side, and the other end of described spring is embedded at the pit of described contact chip and is enclosed within the afterbody place of moving contact.
Described push card part is installed on base by push card, snap fit is provided with in the bottom of push card, the second draw-in groove of the snap fit adapting to described push card is provided with in the corresponding position of base, this second draw-in groove is arranged in the horizontal direction, and described push card to be installed on by described snap fit and described second coordinating of draw-in groove on base and can to slide along described second draw-in groove.
The snap fit of the bottom of described push card is set to two, described two snap fits are symmetrical is respectively located at the both sides reciprocating direction along push card, be respectively equipped with two place second draw-in grooves in the corresponding position of base, described push card by described two snap fits with described two the second coordinating of draw-in groove and active card is clipped on base.
Described base is also provided with the first opening be connected with described second draw-in groove, the snap fit of described push card loads in the second draw-in groove of described base by the first opening of base, and making push card when loading base, the first draw-in groove of push card matches with the armature part of neutral condition.
The bottom center of described push card is provided with the guiding rib reciprocating direction along push card, is provided with gathering sill in the position corresponding with the guiding rib of push card of base, and the guiding rib activity of described push card is engaged in the gathering sill of base.
Described push card is also provided with guiding breach, guiding protuberance is provided with in the corresponding position of base, the guiding breach of described push card makes push card load in the correspondence position of base by the guiding protuberance of base, and making push card when loading base, the draw-in groove of push card matches with the armature part of neutral condition.
The guiding breach of described push card is two, described two guiding breach are symmetrical is respectively located at the both sides reciprocating direction along push card, be respectively equipped with two guiding protuberances in the corresponding position of base, two guiding breach of described push card make push card load in the correspondence position of base respectively by two guiding protuberances of base.
A kind of contact of the present invention is biased the electromagnetic relay of placement, its armature part is provided with the arc-shaped structure matched with the first draw-in groove of push card, armature part coil electromagnetic force driving under, clockwise or counterclockwise rotation is carried out in rotating shaft around its center, by coordinating of the first draw-in groove of armature part and push card part, clockwise or the counterclockwise rotary motion in a circumferential direction of armature part is converted to the reciprocating motion in the straight direction of push card part, thus drives moving contact to realize and the connection of fixed contact or disjunction.Relay provided by the present invention, after its armature part and push card are assembled, the arc-shaped structure of armature part is placed in the first draw-in groove of push card all the time, therefore when the arc-shaped structure of armature part moves reciprocatingly with push card, except small frictional force, the horizontal thrust that push card will be subject to all the time perpendicular to the first draw-in groove inwall, this thrust is consistent with the push card direction of motion all the time, thus ensure that the stability that push card is moved in the horizontal direction, avoid the play of moving contact in the vertical direction, improve the electricity function index of product.
A kind of contact of the present invention is biased the electromagnetic relay of placement, when armature part is in neutral condition, contact gap L1 between its normally opened contact and the contact gap L2 between normally-closed contact is that size is unequal, thus compensate for due to problems different relative to neutral condition stroke when armature partial arc shape structure and its spindle central exist the push card set and release (involution) that bias causes, thus after ensure that relay has assembled, without the need to special adjustment, just can ensure that the contact overtravel of its normally opened contact end is equal with normally-closed contact terminal contacts overtravel; And, due to relay provided by the present invention, other conventional relays similar are not set and are fixed on movable contact spring on base like that, but contact chip (being equivalent to movable contact spring) is arranged in push card reciprocating with push card, therefore, problems different relative to neutral condition stroke when push card set and release (involution) can not cause existing for other conventional relays similar cause owing to applying different promotion strokes to its dynamic spring often start reed and problem that produce closing of contact pressure different different with normally closed movable contact spring deformation quantity.Relay provided by the present invention, its contact chip is arranged in push card, the contact chip back side is provided with spring to withstand contact chip part, when the moving contact on contact chip has just started to close with the fixed contact on quiet spring, contact chip starts the pressure being subject to transmitting from fixed contact, thus compress the spring at its back side further, start to produce closing contact pressure, in the present invention, no matter relay set or release (involution), when move under the drive of contact chip part in push card moving contact and fixed contact completely closed after, due on base between normally opened contact between contact gap from normally-closed contact the asymmetric setting of contact gap compensate for problems different relative to neutral condition stroke when armature partial arc shape structure and its spindle central exist the push card set and release (involution) that bias causes, therefore, no matter be normally opened contact end or normally-closed contact end, when dynamic, after fixed contact is completely closed, it is identical to the decrement that spring produces, therefore, no matter be normally opened contact end or normally-closed contact end, its closing of contact pressure produced also is identical, thus ensure that the consistency of relay normally open end and normal-closed end electric property.
The invention has the beneficial effects as follows:
1, due to have employed to be provided with in armature part depart from neutral condition time center line connecting portion, and when the first draw-in groove of push card matches with the armature part of neutral condition, often start contact and the contact gap L1 often opened between fixed contact and the contact gap L2 between normally closed moving contact and normally closed fixed contact, meet formula: L1 ≠ L2, thus compensate for due to problems different relative to neutral condition stroke when armature partial arc shape structure and its spindle central exist the push card set and release (involution) that bias causes, thus after ensure that relay has assembled, without the need to special adjustment, just can ensure that the contact overtravel of its normally opened contact end is equal with normally-closed contact terminal contacts overtravel.
2, owing to have employed the arc-shaped structure of armature part in the first draw-in groove being engaged in push card, make the horizontal thrust that push card is subject to perpendicular to the first draw-in groove inwall all the time, this thrust is consistent with the push card direction of motion all the time, thus ensure that the stability that push card is moved in the horizontal direction, avoid the play of moving contact in the vertical direction, improve the electricity function index of product.
3, owing to have employed, contact chip (being equivalent to movable contact spring) is arranged in push card reciprocating with push card, because of upper, problems different relative to neutral condition stroke when push card set and release (involution) can not cause existing for other conventional relays similar cause owing to applying different promotion strokes to its dynamic spring often start reed and problem that produce closing of contact pressure different different with normally closed movable contact spring deformation quantity.
4, owing to have employed dual spring at the contact chip back side to withstand contact chip part, be compared to a spring structure when carrying out ejection contact chip part, have the advantages that action is more stable, on the other hand, on base, between normally opened contact, between contact gap from normally-closed contact, the asymmetric setting of contact gap compensate for problems different relative to neutral condition stroke when armature partial arc shape structure and its spindle central exist the push card set and release (involution) that bias causes, therefore, no matter be normally opened contact end or normally-closed contact end, when dynamic, after fixed contact is completely closed, it is identical to the decrement that stage clip produces, therefore, no matter be normally opened contact end or normally-closed contact end, its closing of contact pressure produced also is identical, thus ensure that the consistency of relay normally open end and normal-closed end electric property.
5, snap fit is provided with owing to have employed in the bottom of push card, base is then provided with the second corresponding draw-in groove, and be provided with guiding rib in push card bottom center, on base, relevant position is provided with gathering sill, by coordinating of snap fit and the second draw-in groove, guiding rib coordinates with gathering sill, carries out spacing to the motion process of push card, thus ensure that smooth-going on base during high-speed motion of push card and stable.
Below in conjunction with drawings and Examples, the present invention is described in further detail; But the electromagnetic relay that a kind of contact of the present invention is biased placement is not limited to embodiment.
Accompanying drawing explanation
Fig. 1 be a kind of electromagnetic relay of prior art structural representation;
Fig. 2 (a) is the armature part of the electromagnetic relay of prior art schematic diagram when being in neutral condition;
The armature part that Fig. 2 (b) is existing electromagnetic relay is in schematic diagram during release condition;
The armature part that Fig. 2 (c) is existing electromagnetic relay and the schematic diagram that coordinates between push card;
Fig. 3 is the D structure schematic diagram of electromagnetic relay of the present invention;
Fig. 4 is the schematic diagram of the push card part loading base of electromagnetic relay of the present invention;
Fig. 5 is the organigram of armature part of the present invention;
Fig. 6 be armature part of the present invention when being in neutral condition push card part combine with magnetic circuit part, quiet spring coordinate (vertically analysing and observe) schematic diagram;
Fig. 7 be armature part of the present invention when being in neutral condition push card part combine with armature part, quiet spring coordinate schematic diagram;
Fig. 8 (a) be armature part of the present invention when being in neutral condition push card part combine with magnetic circuit part, quiet spring coordinate (laterally analysing and observe) schematic diagram;
Fig. 8 (b) be armature part of the present invention when being in SM set mode push card part combine with magnetic circuit part, quiet spring coordinate (laterally analysing and observe) schematic diagram;
Fig. 8 (c) be armature part of the present invention when being in involution state push card part combine with magnetic circuit part, quiet spring coordinate (laterally analysing and observe) schematic diagram;
Fig. 9 (a) is the D structure schematic diagram of push card of the present invention (front to);
Fig. 9 (b) is the D structure schematic diagram of push card of the present invention (rear to);
Figure 10 (a) is the D structure schematic diagram of contact chip part (lateral surface) of the present invention;
Figure 10 (b) is the D structure schematic diagram of contact chip part (medial surface) of the present invention;
Figure 11 is the assembling schematic diagram of push card part of the present invention;
Figure 12 is the D structure schematic diagram of push card part of the present invention;
Figure 13 is the D structure schematic diagram of base of the present invention and the combination of quiet spring;
Figure 14 (a) is the structural representation of the present invention's (intermediateness);
Figure 14 (b) is the structural representation of the present invention's (SM set mode);
Figure 14 (c) is the structural representation of the present invention's (involution state);
Figure 15 is the D structure schematic diagram of another kind of push card (snap fit is in outward direction) of the present invention.
Embodiment
Embodiment, see shown in Fig. 3 to Figure 15, a kind of contact of the present invention is biased the electromagnetic relay of placement, comprises magnetic circuit part 1, base 21, the combination of quiet spring and push card part 3; Magnetic circuit part 1 comprises coil 11, yoke 12 and armature part 13, wherein, armature part is provided with the central rotating shaft 131 that it can be made to rotate, armature part 13 is rotatably positioned on base 21 by the central rotating shaft 131 be located in armature part, can certainly be positioned at other can on supporter; Described quiet spring combination comprises often opens quiet spring combination 22 and normally closed quiet spring combination 23, often open quiet spring combination 22 to form by often opening static contact spring piece 221 and being fixed on the fixed contact 222 of often opening often opened on static contact spring piece, normally closed quiet spring combination 23 is made up of normally closed static contact spring piece 231 and the normally closed fixed contact 232 be fixed on normally closed static contact spring piece; Often open static contact spring piece 221 and normally closed static contact spring piece 231 is arranged on base 21 respectively; Described push card part 3 comprises push card 31, often opens contact chip part 32, normally closed contact chip part 34 and spring 33, often open contact chip part 32 to form by often opening contact chip 321 and being fixed on the contact 322 of often starting of often opening on contact chip, normally closed contact chip part 34 is made up of normally closed contact chip 341 and the normally closed moving contact 342 be fixed on normally closed contact chip, often opens contact chip 321 and normally closed contact chip 341 is arranged in push card 31 respectively by spring 33; And make often to start contact 322, normally closed moving contact 342 and often open fixed contact 222, normally closed fixed contact 232 is corresponding respectively; Armature part is provided with the connecting portion of center line when departing from neutral condition, one in push card is provided with the first draw-in groove 317, the connecting portion of armature part is engaged in the first draw-in groove 317 of push card, when coil 11 pass into forward or backwards exciting current time, armature part 13 is around its central rotating shaft 131 along rotating forward or backwards and driving push card part 3 along moving forward or backwards; ; Described push card part 3 is installed on base 21 by push card 31, and make when the first draw-in groove 317 of push card matches with the armature part of neutral condition, often start contact 322 and the contact gap L1 often opened between the fixed contact 222 and contact gap L2 between normally closed moving contact 342 and normally closed fixed contact 232, meet formula: L1 ≠ L2.
Described connecting portion is arc-shaped structure 132, and the arc-shaped structure 132 of armature part is engaged in the first draw-in groove 317 of push card.
Described armature part 13 is H type shape, and described connecting portion and arc-shaped structure 132 are located at a side of H type shape.
Described push card part 3 is installed on base by push card 31, be provided with snap fit 311 in the bottom of push card, the second draw-in groove 211 of the snap fit adapting to described push card is provided with in the corresponding position of base, this second draw-in groove 211 is arranged in the horizontal direction, and described push card 31 to be installed on by described snap fit and described second coordinating of draw-in groove 211 on base 21 and can to slide along described second draw-in groove 211.
The snap fit 311 of the bottom of described push card is set to two, described two snap fits 311 are symmetrical is respectively located at the both sides reciprocating direction along push card, and the eave tile of two snap fits is towards direction, inner side, certainly, the eave tile of two snap fits also can be designed to direction (as shown in figure 15) toward the outer side; Be respectively equipped with two place second draw-in grooves 211 in the corresponding position of base, described push card 31 by described two snap fits 311 with described two the second coordinating of draw-in groove 211 and active card is clipped on base 21.
Described base is also provided with the first opening 212 be connected with described second draw-in groove 211, the snap fit 311 of described push card loads in the second draw-in groove of described base by the first opening 212 of base, and making push card 31 when loading base 21, the first draw-in groove 317 of push card matches with the armature part 13 of neutral condition.
The bottom center of described push card is provided with the guiding rib 315 reciprocating direction along push card, be provided with gathering sill 213 in the position corresponding with the guiding rib of push card of base, guiding rib 315 activity of described push card is engaged in the gathering sill 213 of base.
The both ends of described push card are respectively equipped with for movable the 3rd draw-in groove 312 loading described contact chip, 3rd draw-in groove 312 is used for loading often opens contact chip 321, 3rd draw-in groove 312 is used for loading normally closed contact chip 341, the holding tank 313 for holding described spring is respectively equipped with in the inboard of two the 3rd draw-in grooves 312, the inboard wall of holding tank all outwards protrudes out the useful projection 314 being nested with described spring, at contact chip (often to open contact chip 321, normally closed contact chip 341 is also identical) inner side one side be provided with pit 3211, two contact chips (often opening contact chip 321 and normally closed contact chip 341) are inserted in two the 3rd draw-in grooves 312 of push card respectively, spring 33 respectively elasticity is opened between the inboard wall of the holding tank withstanding on contact chip and described push card, one end of spring 33 is placed on the projection 314 of described push card, the other end of spring 33 is embedded at the pit 3211 of described contact chip.
Often to open contact chip 321, described moving contact 322 is fixed on the outside one side of contact chip 321, the afterbody 3221 of moving contact shows especially in the pit 3211 of the inner side of contact chip 321 one side, and the other end of described spring 33 is embedded at the pit 3211 of described contact chip and is enclosed within afterbody 3221 place of moving contact.
The peripheral size of described 3rd draw-in groove is greater than the peripheral size of described contact chip.
Described push card 31 is also provided with guiding breach 316, guiding protuberance 214 is provided with in the corresponding position of base, the guiding breach 314 of described push card makes push card load in the correspondence position of base by the guiding protuberance 214 of base, and making push card when loading base, the draw-in groove of push card matches with the armature part of neutral condition.
The guiding breach 316 of described push card is two, described two guiding breach 316 are symmetrical is respectively located at the both sides reciprocating direction along push card, be respectively equipped with two guiding protuberances 214 in the corresponding position of base, two guiding breach 316 of described push card make push card load in the correspondence position of base respectively by two guiding protuberances 214 of base.
As shown in Figure 6, a kind of contact of the present invention is biased the electromagnetic relay of placement, when armature part 13 is in neutral condition, contact gap L1 between its normally opened contact and the contact gap L2 between normally-closed contact is that size is unequal, its occurrence according to the angle turned over relative to neutral condition when armature portion set and involution in conjunction with the bias L3 of armature partial arc shape structure 132 with its spindle central, specifically can be calculated by the method for dimension chain calculating.
In the process of relay set and involution, although its armature part 13 rotates forward relative to neutral condition or the angle of reversing is identical, but because armature part has bias L3, so its push card 31 is different relative to the stroke advanced during neutral condition or retreat, by arranging the contact gap L1 between different normally opened contacts and the contact gap L2 between normally-closed contact, thus compensate for the push card advance problem different from the stroke retreated, therefore, after relay has assembled, without the need to special adjustment, just can ensure that the contact contact overtravel of its normally opened contact end is equal with the contact overtravel of normally-closed contact end.And, as shown in figure 12, because contact chip of the present invention (often opening contact chip 321 and normally closed contact chip 341) is arranged in push card 31, the back side of contact chip is provided with spring 33 and withstands contact chip part, therefore, when armature part 13 is in neutral condition, as shown in Figure 8 (a), the now no matter moving contact of Chang Kaiduan or the moving contact of normal-closed end, under the effect of the spring 33 at its back side, is all close on the barricade of the 3rd draw-in groove 312 of push card; When relay is in set position, as shown in Figure 8 (b) shows, it often starts contact 322 and is subject to often opening pressure that fixed contact 222 transmits and drives and often open contact chip 321 Compress Spring 33 backward, thus form gap X1 often opening between contact chip 321 and the 3rd draw-in groove barricade of push card, namely the value of X1 is the overtravel of this Chang Kaiduan contact, is also the decrement of armature combination spring when its spring is in neutral condition relative to armature combination when being in SM set mode; When relay is in involution position, as shown in Fig. 8 (c), its normally closed moving contact 342 is subject to pressure that normally closed fixed contact 232 transmits and drives normally closed contact chip 341 Compress Spring 33 backward, thus gap X2 is formed between normally closed contact chip 341 and the 3rd draw-in groove barricade of push card, namely the value of X2 is the overtravel of this normal-closed end contact, is also the decrement of armature combination stage clip when its stage clip is in neutral condition relative to armature combination when being in involution state.Because the present invention is by arranging the contact gap L1 between different normally opened contacts and the contact gap L2 between normally-closed contact, compensate for the problem that push card advance is different from the stroke retreated, thus can guarantee that the contact overtravel X1 of Chang Kaiduan equals the contact overtravel X2 of normal-closed end, so, also equal at the decrement X2 of involution state lower spring relative to neutral condition at SM set mode lower spring relative to decrement X1 in a neutral state, therefore, the present invention can guarantee no matter in set or involution state, spring due to by compression and on contact chip contact produce closing contact between contact force equal, namely Chang Kaiduan contact force is equal all the time with normal-closed end contact force.
A kind of contact of the present invention is biased the electromagnetic relay of placement, its armature part 13 is provided with the arc-shaped structure 132 matched with the first draw-in groove 317 of push card, armature part coil electromagnetic force driving under, clockwise or counterclockwise rotation is carried out in rotating shaft 131 around its center, by coordinating of the first draw-in groove 317 of armature part and push card part, clockwise or the counterclockwise rotary motion in a circumferential direction of armature part is converted to the reciprocating motion in the straight direction of push card part, thus drive moving contact to realize and the connection of fixed contact or disjunction.Relay provided by the present invention, as shown in Figure 7, after its armature part 13 is assembled with push card, the arc-shaped structure 132 of armature part is placed in the first draw-in groove 317 of push card all the time, therefore when the arc-shaped structure 132 of armature part moves reciprocatingly with push card, except small frictional force, the horizontal thrust that push card will be subject to all the time perpendicular to the first draw-in groove inwall, this thrust is consistent with the push card direction of motion all the time, as the thrust F3 in Fig. 7 or F4, thus ensure that the stability that push card is moved in the horizontal direction, avoid the play of moving contact in the vertical direction, thus improve the electricity function index of product.
A kind of contact of the present invention is biased the electromagnetic relay of placement, when armature part is in neutral condition, contact gap L1 between its normally opened contact and the contact gap L2 between normally-closed contact is that size is unequal, thus compensate for due to problems different relative to neutral condition stroke when armature partial arc shape structure and its spindle central exist the push card set and release (involution) that bias causes, thus after ensure that relay has assembled, without the need to special adjustment, just can ensure that the contact overtravel of its normally opened contact end is equal with normally-closed contact terminal contacts overtravel; And, due to relay provided by the present invention, other conventional relays similar are not set and are fixed on movable contact spring on base like that, but contact chip (being equivalent to movable contact spring) is arranged in push card reciprocating with push card, therefore, problems different relative to neutral condition stroke when push card set and release (involution) can not cause existing for other conventional relays similar cause owing to applying different promotion strokes to its dynamic spring often start reed and problem that produce closing of contact pressure different different with normally closed movable contact spring deformation quantity.Relay provided by the present invention, its contact chip is arranged in push card, the contact chip back side is provided with spring to withstand contact chip part, when the moving contact on contact chip has just started to close with the fixed contact on quiet spring, contact chip starts the pressure being subject to transmitting from fixed contact, thus compress the spring at its back side further, start to produce closing contact pressure, in the present invention, no matter relay set or release (involution), when move under the drive of contact chip part in push card moving contact and fixed contact completely closed after, due on base between normally opened contact between contact gap from normally-closed contact the asymmetric setting of contact gap compensate for problems different relative to neutral condition stroke when armature partial arc shape structure and its spindle central exist the push card set and release (involution) that bias causes, therefore, no matter be normally opened contact end or normally-closed contact end, when dynamic, after fixed contact is completely closed, it is identical to the decrement that spring produces, therefore, no matter be normally opened contact end or normally-closed contact end, its closing of contact pressure produced also is identical, thus ensure that the consistency of relay normally open end and normal-closed end electric property.
Above-described embodiment is only used for further illustrating the electromagnetic relay that a kind of contact of the present invention is biased placement; but the present invention is not limited to embodiment; every above embodiment is done according to technical spirit of the present invention any simple modification, equivalent variations and modification, all fall in the protection range of technical solution of the present invention.
Claims (14)
1. contact is biased an electromagnetic relay for placement, comprises the combination of magnetic circuit part, base, push card part and quiet spring; Magnetic circuit part comprises coil, yoke and armature part, and wherein, armature part is provided with the central rotating shaft that it can be made to rotate; Described quiet spring combination comprises often opens the combination of quiet spring and normally closed quiet spring combination, often opens the combination of quiet spring and normally closed quiet spring and combines and be made up of static contact spring piece and the fixed contact be fixed on static contact spring piece respectively; Described push card part comprises push card, often opens contact chip part and normally closed contact chip part, often open contact chip part and normally closed contact chip part to be made up of contact chip and the moving contact be fixed on contact chip respectively, often open contact chip and normally closed contact chip is arranged in push card respectively, and make often to start contact, normally closed moving contact and often open fixed contact, normally closed fixed contact is corresponding respectively; It is characterized in that: the connecting portion being provided with center line when departing from neutral condition in armature part, one in push card is provided with the first draw-in groove, the connecting portion of armature part is engaged in the first draw-in groove of push card, when coil pass into forward or backwards exciting current time, armature part is around its central rotating shaft along rotating forward or backwards and driving push card part along moving forward or backwards; When the first draw-in groove of push card matches with the armature part of neutral condition, often start contact and the contact gap L1 often opened between fixed contact and the contact gap L2 between normally closed moving contact and normally closed fixed contact, meet formula: L1 < L2.
2. contact according to claim 1 is biased the electromagnetic relay of placement, it is characterized in that: described connecting portion is arc-shaped structure, and the arc-shaped structure of armature part is engaged in the first draw-in groove of push card.
3. contact according to claim 1 is biased the electromagnetic relay of placement, it is characterized in that: described push card part also comprises spring, described contact chip by spring fitting in push card.
4. contact according to claim 3 is biased the electromagnetic relay of placement, it is characterized in that: described contact chip passes through two spring fittings in push card.
5. the contact according to claim 3 or 4 is biased the electromagnetic relay of placement, it is characterized in that: in described push card, be provided with the projection for being nested with described spring, one end and the described contact chip of described spring lean, and the other end of spring is nested with on described projection.
6. contact according to claim 5 is biased the electromagnetic relay of placement, it is characterized in that: the inner side one side of described contact chip is provided with pit, and one end of described spring is embedded in the pit of described contact chip.
7. contact according to claim 6 is biased the electromagnetic relay of placement, it is characterized in that: the end of described push card is provided with for movable the 3rd draw-in groove loading described contact chip, the holding tank for holding described spring is provided with in the inboard of the 3rd draw-in groove, described projection is located in holding tank, described contact chip is inserted in the 3rd draw-in groove of push card, and spring is opened between the inboard wall of the holding tank withstanding on contact chip and described push card.
8. the contact according to claim 6 or 7 is biased the electromagnetic relay of placement, it is characterized in that: described moving contact is fixed on the outside one side of contact chip, the afterbody of moving contact shows especially in the pit of the inner side of contact chip one side, and the other end of described spring is embedded at the pit of described contact chip and is enclosed within the afterbody place of moving contact.
9. contact according to claim 1 is biased the electromagnetic relay of placement, it is characterized in that: described push card part is installed on base by push card, snap fit is provided with in the bottom of push card, the second draw-in groove of the snap fit adapting to described push card is provided with in the corresponding position of base, this second draw-in groove is arranged in the horizontal direction, and described push card to be installed on by described snap fit and described second coordinating of draw-in groove on base and can to slide along described second draw-in groove.
10. contact according to claim 9 is biased the electromagnetic relay of placement, it is characterized in that: the snap fit of the bottom of described push card is set to two, described two snap fits are symmetrical is respectively located at the both sides reciprocating direction along push card, be respectively equipped with two place second draw-in grooves in the corresponding position of base, described push card by described two snap fits with described two the second coordinating of draw-in groove and active card is clipped on base.
11. contacts according to claim 9 are biased the electromagnetic relay of placement, it is characterized in that: described base is also provided with the first opening be connected with described second draw-in groove, the snap fit of described push card loads in the second draw-in groove of described base by the first opening of base, and making push card when loading base, the first draw-in groove of push card matches with the armature part of neutral condition.
12. contacts according to claim 9 are biased the electromagnetic relay of placement, it is characterized in that: the bottom center of described push card is provided with the guiding rib reciprocating direction along push card, be provided with gathering sill in the position corresponding with the guiding rib of push card of base, the guiding rib activity of described push card is engaged in the gathering sill of base.
13. contacts according to claim 9 are biased the electromagnetic relay of placement, it is characterized in that: described push card is also provided with guiding breach, guiding protuberance is provided with in the corresponding position of base, the guiding breach of described push card makes push card load in the correspondence position of base by the guiding protuberance of base, and making push card when loading base, the draw-in groove of push card matches with the armature part of neutral condition.
14. contacts according to claim 13 are biased the electromagnetic relay of placement, it is characterized in that: the guiding breach of described push card is two, described two guiding breach are symmetrical is respectively located at the both sides reciprocating direction along push card, be respectively equipped with two guiding protuberances in the corresponding position of base, two guiding breach of described push card make push card load in the correspondence position of base respectively by two guiding protuberances of base.
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| CN201210382424.XA CN103715026B (en) | 2012-09-29 | 2012-09-29 | A kind of contact is biased the electromagnetic relay of placement |
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| CN201210382424.XA CN103715026B (en) | 2012-09-29 | 2012-09-29 | A kind of contact is biased the electromagnetic relay of placement |
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| CN103715026A CN103715026A (en) | 2014-04-09 |
| CN103715026B true CN103715026B (en) | 2015-10-28 |
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| CN108511272B (en) * | 2018-04-09 | 2024-02-20 | 三友联众集团股份有限公司 | Improved vertical magnetic latching relay |
| CN108962686B (en) * | 2018-08-08 | 2024-08-09 | 漳州宏发电声有限公司 | Electromagnetic relay for switching dual power supplies |
| CN109585226B (en) * | 2018-11-30 | 2024-09-27 | 漳州宏发电声有限公司 | Impact-resistant and falling-resistant multi-contact electromagnetic relay |
| CN109920701A (en) * | 2019-01-18 | 2019-06-21 | 厦门宏发信号电子有限公司 | A kind of high small-sized clapper-type electromagnetic relay of insulation |
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| CN2344868Y (en) * | 1998-09-07 | 1999-10-20 | 保定天威雷诺尔电气有限公司 | Small-sized large-capacity electromagnetic relay for electric power |
| CN201549449U (en) * | 2009-12-01 | 2010-08-11 | 李健全 | Single-phase magnetic latching relay |
| CN202839475U (en) * | 2012-09-29 | 2013-03-27 | 厦门宏发电声股份有限公司 | Electromagnetic relay with contacts bias placed |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2727639B2 (en) * | 1989-04-07 | 1998-03-11 | オムロン株式会社 | Electromagnetic relay |
| WO2010090619A2 (en) * | 2009-02-04 | 2010-08-12 | Clodi L.L.C. | Electromagnetic relay assembly |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2344868Y (en) * | 1998-09-07 | 1999-10-20 | 保定天威雷诺尔电气有限公司 | Small-sized large-capacity electromagnetic relay for electric power |
| CN201549449U (en) * | 2009-12-01 | 2010-08-11 | 李健全 | Single-phase magnetic latching relay |
| CN202839475U (en) * | 2012-09-29 | 2013-03-27 | 厦门宏发电声股份有限公司 | Electromagnetic relay with contacts bias placed |
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