CN103715026A - Electromagnetic relay with contacts bias placed - Google Patents
Electromagnetic relay with contacts bias placed Download PDFInfo
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- CN103715026A CN103715026A CN201210382424.XA CN201210382424A CN103715026A CN 103715026 A CN103715026 A CN 103715026A CN 201210382424 A CN201210382424 A CN 201210382424A CN 103715026 A CN103715026 A CN 103715026A
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Abstract
The invention discloses an electromagnetic relay with contacts bias placed. The electromagnetic relay comprises a magnetic circuit part, a base, a pushing clamping part and a stationary spring assembly. The stationary spring assembly comprises a normally open stationary spring assembly and a normally closed stationary spring assembly. The magnetic circuit part comprises a coil, a yoke iron and an armature part. In the process of excitation, the armature part rotates forward or backward and drives the pushing clamping part to move forward or backward. The pushing clamping part comprises a pushing clamp, a normally open contact chip part, a normally closed contact chip part and a spring. A normally open movable contact and a normally closed movable contact respectively correspond to a normally open stationary contact and a normally closed stationary contact. When the armature part is neutral, the pushing clamp is installed on the base, and a contact gap L1 between the normally open movable contact and the normally open stationary contact is not equal to a contact gap L2 between the normally closed movable contact and the normally closed stationary contact. By means of such a structure, normally open contact ends and normally closed contact ends can acquire the same indexes such as contact over-travel, contact pressure and the like in the process of setting and release (resetting) while the relay does not need to be especially adjusted after being assembled, and therefore the normally open contact ends and the normally closed contact ends can be consistent in electrical property.
Description
Technical field
The present invention relates to a kind of electromagnetic relay, particularly relate to the electromagnetic relay that the biasing of a kind of contact is placed.
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 partly consists of magnetic circuit part, base portion and push card; 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 moving spring combination 18B ＇ and reset reed 20 ＇; Magnetic circuit part consists of coil 12 ＇, yoke 13 ＇ and armature part 14 ＇; Metal rotating shaft 19 ＇ of armature part 14 ＇Ke Yanqi center plug-in mountings rotate; Push card part is taken on by push card 15 ＇ with draw-in groove.When coil 12 ＇ energising rear drive armature rotate, armature drives push card to promote moving spring aggregate motion, thereby it is closed with the normally opened contact often starting on spring combination 18A ＇ to make often to open quiet spring combination 17A ＇, make the normally-closed contact on normally closed quiet spring combination 17B ＇ and normally closed moving spring combination 18B ＇ open simultaneously, realize the switching of contact; When coil 12 ＇ do not apply excitation, at reset reed 20 ＇ with often start under the effect of the mechanical counter-force that spring combination 18A ＇, normally closed moving spring combination 18B ＇ provide jointly, push card 15 ＇ are pushed back original position (position shown in Fig. 1), thereby drive the normally opened contact group of often starting spring combination 18A ＇ and often opening on quiet spring combination 17A ＇ to open, make the normally-closed contact group on normally closed quiet spring combination 17B ＇ and normally closed moving spring combination 18B ＇ closed simultaneously, realize the switching of contact.
Armature that Fig. 2 (a) is existing electromagnetic relay part is in neutral condition (so-called neutral condition here, refer to that armature part does not all have in positive direction or a reciprocal arbitrary direction with respect to push card, and armature partial parallel is in magnetic circuit part, now armature part is in vertical state) time schematic diagram, now, the distance L 1 of two moving contact 181 ＇, 182 ＇ to two fixed contact, 171 ＇, 172 ＇ equates with L2.The schematic diagram of the armature part that Fig. 2 (b) is existing electromagnetic relay when release condition, between armature that Fig. 2 (c) is existing electromagnetic relay part and push card, coordinate schematic diagram, wherein, armature part 14 ＇ of solid line represent to be in off-position N, and armature part 14 ＇ of dotted line represent to be in set position M; When coil electricity or power-off, as shown in Fig. 2 (b), armature part 14 ＇, around its rotating shaft 19 ＇ forwards or the identical angle value that reversed, make relay realize the function of normally opened contact closure (normally-closed contact disconnection) or normally opened contact disconnection (normally-closed contact is closed).
The deficiency of this kind of structure is:
1, in armature part during in neutral condition, due to the central shaft position of its armature part and the armature line of hook position and the direction of motion out of plumb of push card for coordinating with push card partly, 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, the stroke that its push card is moved is forward not identical with the stroke of motion backward, the Fig. 2 (b) of take is example, in the process of relay set and release, although the angle that its armature part turns over respect to its neutral condition around its rotating shaft is identical, but the words that the armature part neutral condition of take is calculated as motion starting point, the stroke that its push card is passed by with respect to its neutral condition when set is not identical with the stroke that its push card is passed by with respect to its neutral condition when discharging, that is to say, when when set, the stroke of moving contact 181 ＇ motions is with release, the stroke of moving contact 182 ＇ motions is not identical, thereby cause the overtravel of normally opened contact 181 ＇ different from the overtravel of normally-closed contact 182 ＇, and because it often starts spring and normally closed moving spring is fixed on base, therefore it is different from the deformation quantity of normally closed moving spring by causing it often to start spring that its moving spring is applied to different promotion strokes, thereby cause, often to start spring different from the counter-force producing due to deformation of normally closed moving spring, thereby cause the closing contact pressure of normally opened contact different with 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, thereby affect the consistency of relay performance; During actual production, normal adopt assemble rear adjusting move spring with the method for quiet spring so that contact overtravel and the contact force of relay normally open contact end and normally-closed contact end are identical, thereby make the performance of normally opened contact end and normally-closed contact end basic identical, but which affects production efficiency, and be difficult to guarantee the consistency of product.
2, owing to being that the hook portion of armature part coordinates with push card, so hook will produce the power of F1 direction as shown in Figure 2 (c) to push card in set process, in dispose procedure, hook will produce the power of F2 direction to push card, 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 is completely not parallel with the direction of motion (horizontal direction) of push card with F2, therefore partly drive in the process of push card set and release at armature, push card cannot be done horizontal movement reposefully, will there is play by the vertical direction in it, thereby affect the kinetic stability of whole mechanism, shorten the service life of motion, and make the moving contact that push card drives produce play with its in the vertical direction, thereby affect the electric property of relay.
Summary of the invention
The object of the invention is to overcome the deficiency of prior art, the electromagnetic relay that provides the biasing of a kind of contact to place, after assembling without 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), thereby 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), armature part is mainly the thrust of horizontal direction to the active force of push card, guaranteed that push card is moved in the horizontal direction smooth-going and stable, thereby avoided the play of moving contact in the vertical direction, improved the electricity function index of product.
The technical solution adopted for the present invention to solve the technical problems is: the electromagnetic relay that the biasing of a kind of contact is placed, comprises magnetic circuit part, base, push card part and the combination of quiet spring; Magnetic circuit part comprises coil, yoke and armature part, and wherein, armature is partly provided with the central rotating shaft that can make its rotation; Described quiet spring combination comprises often opens quiet spring combination and normally closed quiet spring combination, often opens quiet spring combination and normally closed quiet spring and combines respectively by static contact spring piece and the fixed contact that is fixed on static contact spring piece and form; Described push card partly comprises push card, often opens contact chip part and normally closed contact chip part, often opening contact chip part and normally closed contact chip partly consists of contact chip and the moving contact being 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; In armature part, be provided with the connecting portion of center line while 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 passes into forward or backwards exciting current, 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 and the armature of neutral condition partly match, often start contact and often open contact gap L1 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.
In described push card, be provided with for being nested with the projection of described spring, one end of described spring and described contact chip lean, and the other end of spring is nested with on described projection.
The inner side of described contact chip is simultaneously 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 the 3rd draw-in groove that packs described contact chip for activity into, in the inboard of the 3rd draw-in groove, be provided with for holding the holding tank of described spring, 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 that withstands 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, bottom in push card is provided with snap fit, in the corresponding position of base, be provided with the second draw-in groove of the snap fit that adapts to described push card, this the second draw-in groove along continuous straight runs arranges, and described push card is by being installed on described snap fit and coordinating of described the second draw-in groove on base and can sliding along described the second draw-in groove.
The snap fit of the bottom of described push card is made as two, described two snap fits are the symmetrical both sides that come and go moving direction along push card that are located at respectively, in the corresponding position of base, be respectively equipped with two place's the second draw-in grooves, by described two snap fits, active card is clipped on base described push card with described two the second coordinating of draw-in groove.
On described base, be also provided with the first opening being connected with described the second draw-in groove, the snap fit of described push card packs in the second draw-in groove of described base by the first opening of base, and making push card when packing base into, the first draw-in groove of push card partly matches with the armature of neutral condition.
The bottom center of described push card is provided with the guiding rib that comes and goes moving direction along push card, in the position corresponding with guiding rib push card base, is provided with gathering sill, and the guiding rib activity of described push card is engaged in the gathering sill of base.
In described push card, be also provided with guiding breach, in the corresponding position of base, be provided with guiding protuberance, the guiding breach of described push card packs in the correspondence position of base push card into by the guiding protuberance of base, and making push card when packing base into, the draw-in groove of push card partly matches with the armature of neutral condition.
The guiding breach of described push card is two, described two guiding breach are the symmetrical both sides that come and go moving direction along push card that are located at respectively, in the corresponding position of base, be respectively equipped with two guiding protuberances, two guiding breach of described push card pack in the correspondence position of base push card into by two guiding protuberances of base respectively.
The electromagnetic relay that a kind of contact biasing of the present invention is placed, its armature is partly provided with the arc-shaped structure of the use that matches 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, coordinating of the first draw-in groove by armature part and push card part, clockwise or counterclockwise the rotatablely moving in a circumferential direction of armature part is converted to the reciprocating motion of push card part in rectilinear direction, thereby drives connection or the disjunction of moving contact realization and fixed contact.Relay provided by the present invention, after its armature part is assembled with push card, 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, push card is by the horizontal thrust being 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, thereby guaranteed the stability that push card is moved in the horizontal direction, avoid the play of moving contact in the vertical direction, improved the electricity function index of product.
The electromagnetic relay that a kind of contact biasing of the present invention is placed, when armature part is during in neutral condition, contact gap L1 between its normally opened contact and the contact gap L2 between normally-closed contact are that size is unequal, thereby compensated problems different with respect to neutral condition stroke while there is push card set that bias causes and release (involution) due to armature partial arc shape structure and its spindle central, thereby after having guaranteed that relay has assembled, without special adjustment, just can guarantee that the contact overtravel of its normally opened contact end equates with normally-closed contact terminal contacts overtravel; And, due to relay provided by the present invention, similar other conventional relays are not set and are fixed on like that the movable contact spring on base, but contact chip (being equivalent to movable contact spring) is arranged in push card reciprocating with push card, therefore, push card set during from release (involution) problem different with respect to neutral condition stroke can not cause the existing different problem of the reed closing of contact pressure that produce different from normally closed movable contact spring deformation quantity of often starting owing to its moving spring being applied to different promotion strokes and causing of similar other conventional relays.Relay provided by the present invention, its contact chip is arranged in push card, the contact chip back side is provided with spring and withstands contact chip part, moving contact on contact chip just started with quiet spring on fixed contact when closed, contact chip starts the pressure that is subject to transmitting from fixed contact, thereby further compress the spring at its back side, start to produce closing contact pressure, in the present invention, no matter relay set or release (involution), under the drive of contact chip part in push card, move to after moving contact and the complete closure of fixed contact, due on base between normally opened contact between contact gap and normally-closed contact contact gap asymmetric problems different with respect to neutral condition stroke when having compensated armature partial arc shape structure and its spindle central and having push card set that bias causes and release (involution) is set, therefore, no matter be normally opened contact end or normally-closed contact end, when moving, after the complete closure of fixed contact, its decrement that spring is produced is identical, therefore, no matter be normally opened contact end or normally-closed contact end, the closing of contact pressure of its generation is also identical, thereby guaranteed the consistency of relay normally open end and normal-closed end electric property.
The invention has the beneficial effects as follows:
1, owing to having adopted the connecting portion that is provided with center line while departing from neutral condition in armature part, and when the first draw-in groove of push card and the armature of neutral condition partly match, often start contact and often open contact gap L1 between fixed contact and the contact gap L2 between normally closed moving contact and normally closed fixed contact, meet formula: L1 ≠ L2, thereby compensated problems different with respect to neutral condition stroke while there is push card set that bias causes and release (involution) due to armature partial arc shape structure and its spindle central, thereby after having guaranteed that relay has assembled, without special adjustment, the contact overtravel that just can guarantee its normally opened contact end equates with normally-closed contact terminal contacts overtravel.
2, owing to having adopted the arc-shaped structure of armature part to be engaged in the first draw-in groove of push card, make push card be subject to all the time the horizontal thrust perpendicular to the first draw-in groove inwall, this thrust is consistent with the push card direction of motion all the time, thereby guaranteed the stability that push card is moved in the horizontal direction, avoid the play of moving contact in the vertical direction, improved the electricity function index of product.
3, owing to having adopted, contact chip (being equivalent to movable contact spring) is arranged in push card reciprocating with push card, because of upper, push card set during from release (involution) problem different with respect to neutral condition stroke can not cause the existing different problem of the reed closing of contact pressure that produce different from normally closed movable contact spring deformation quantity of often starting owing to its moving spring being applied to different promotion strokes and causing of similar other conventional relays.
4, owing to having adopted dual spring to withstand contact chip part at the contact chip back side, when being compared to a spring structure and carrying out ejection contact chip part, there is the more stable feature of action, on the other hand, on base, between normally opened contact, between contact gap and normally-closed contact, contact gap asymmetric arranges problems different with respect to neutral condition stroke when having compensated armature partial arc shape structure and its spindle central and having push card set that bias causes and release (involution), therefore, no matter be normally opened contact end or normally-closed contact end, when moving, after the complete closure of fixed contact, its decrement that stage clip is produced is identical, therefore, no matter be normally opened contact end or normally-closed contact end, the closing of contact pressure of its generation is also identical, thereby guaranteed the consistency of relay normally open end and normal-closed end electric property.
5, owing to having adopted the bottom in push card to be provided with snap fit, on base, be 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, the motion process of push card carried out spacing, thereby guaranteed push card smooth-going and stable during high-speed motion on base.
Below in conjunction with drawings and Examples, the present invention is described in further detail; But the electromagnetic relay that a kind of contact biasing of the present invention is placed is not limited to embodiment.
Accompanying drawing explanation
Fig. 1 be prior art a kind of electromagnetic relay structural representation;
Fig. 2 (a) is the armature part of electromagnetic relay of the prior art schematic diagram when neutral condition;
The schematic diagram of the armature part that Fig. 2 (b) is existing electromagnetic relay when release condition;
Between armature that Fig. 2 (c) is existing electromagnetic relay part and push card, coordinate schematic diagram;
Fig. 3 is the D structure schematic diagram of electromagnetic relay of the present invention;
Fig. 4 is the schematic diagram that the push card of electromagnetic relay of the present invention partly packs base into;
Fig. 5 is the organigram of armature part of the present invention;
Fig. 6 be armature of the present invention part when neutral condition push card part and magnetic circuit part, the combination of quiet spring coordinate (vertically analysing and observe) schematic diagram;
Fig. 7 is the schematic diagram that coordinates of armature of the present invention part push card part and armature part, combination of quiet spring when neutral condition;
Fig. 8 (a) be armature of the present invention part when neutral condition push card part and magnetic circuit part, the combination of quiet spring coordinate (laterally analysing and observe) schematic diagram;
Fig. 8 (b) be armature of the present invention part when SM set mode push card part and magnetic circuit part, the combination of quiet spring coordinate (laterally analysing and observe) schematic diagram;
Fig. 8 (c) be armature of the present invention part when involution state push card part and magnetic circuit part, the combination of 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 (the place ahead 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 of the present invention (lateral surface);
Figure 10 (b) is the D structure schematic diagram of contact chip part of the present invention (medial surface);
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 of the present invention (snap fit is in outward direction).
Embodiment
Embodiment, referring to shown in Fig. 3 to Figure 15, the electromagnetic relay that a kind of contact biasing of the present invention is placed, 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 is partly provided with the central rotating shaft 131 that can make its rotation, armature part 13 is rotatably positioned on base 21 by the central rotating shaft 131 being located in armature part, can certainly be positioned at other can supporter on; Described quiet spring combination comprises often opens quiet spring combination 22 and normally closed quiet spring combination 23, often open quiet spring combination 22 and form by often opening static contact spring piece 221 and being fixed on the fixed contact 222 of often opening of often opening on static contact spring piece, normally closed quiet spring combination 23 consists of normally closed static contact spring piece 231 and the normally closed fixed contact 232 being fixed on normally closed static contact spring piece; Often opening static contact spring piece 221 and normally closed static contact spring piece 231 is arranged on respectively on base 21; 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 opening contact chip part 32 forms 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 consists of normally closed contact chip 341 and the normally closed moving contact 342 being fixed on normally closed contact chip, often opens contact chip 321 and normally closed contact chip 341 and by spring 33, is arranged in push card 31 respectively; And make often to start contact 322, normally closed moving contact 342 and often open fixed contact 222, normally closed fixed contact 232 corresponding respectively; In armature part, be provided with the connecting portion of center line while 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 passes into forward or backwards exciting current, 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 partly matches with the armature of neutral condition, often start contact 322 and often open contact gap L1 between fixed contact 222 and the 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 is the side that arc-shaped structure 132 is located at H type shape.
Described push card part 3 is installed on base by push card 31, to be provided with snap fit 311 in the bottom of push card, in the corresponding position of base, be provided with the second draw-in groove 211 of the snap fit that adapts to described push card, these the second draw-in groove 211 along continuous straight runs settings, described push card 31 is by being installed on described snap fit and coordinating of described the second draw-in groove 211 on base 21 and can sliding along described the second draw-in groove 211.
The snap fit 311 of the bottom of described push card is made as two, described two snap fits 311 are the symmetrical both sides that come and go moving direction along push card that are located at respectively, and the eave tile of two snap fits is towards interior side direction, and certainly, the eave tile of two snap fits also can be designed to direction (as shown in figure 15) toward the outer side; In the corresponding position of base, be respectively equipped with two place's the second draw-in grooves 211, by described two snap fits 311, active card is clipped on base 21 described push card 31 with described two the second coordinating of draw-in groove 211.
On described base, be also provided with the first opening 212 being connected with described the second draw-in groove 211, the snap fit 311 of described push card packs in the second draw-in groove of described base by the first opening 212 of base, and making push card 31 when packing base 21 into, 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 that comes and goes moving direction along push card, in the position corresponding with guiding rib push card base, be provided with gathering sill 213, guiding rib 315 activities of described push card are engaged in the gathering sill 213 of base.
The both ends of described push card are provided with respectively the 3rd draw-in groove 312 that packs described contact chip for activity into, the 3rd draw-in groove 312 is used for packing into often opens contact chip 321, the 3rd draw-in groove 312 is used for packing into normally closed contact chip 341, in the inboard of two the 3rd draw-in grooves 312, be respectively equipped with for holding the holding tank 313 of described spring, the inboard wall of holding tank all outwards protrudes out the useful projection 314 that is nested with described spring, at contact chip, (take and often open contact chip 321 as example, normally closed contact chip 341 is also identical) inner side be simultaneously provided with pit 3211, two contact chips (often opening contact chip 321 and normally closed contact chip 341) are inserted into respectively in two the 3rd draw-in grooves 312 of push card, spring 33 respectively elasticity is opened between the inboard wall of the holding tank that withstands 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.
Take and often open contact chip 321 as example, 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 places of moving contact.
The peripheral size of described the 3rd draw-in groove is greater than the peripheral size of described contact chip.
In described push card 31, be also provided with guiding breach 316, in the corresponding position of base, be provided with guiding protuberance 214, the guiding breach 314 of described push card packs in the correspondence position of base push card into by the guiding protuberance 214 of base, and making push card when packing base into, the draw-in groove of push card partly matches with the armature of neutral condition.
The guiding breach 316 of described push card is two, described two guiding breach 316 are the symmetrical both sides that come and go moving direction along push card that are located at respectively, in the corresponding position of base, be respectively equipped with two guiding protuberances 214, two guiding breach 316 of described push card pack in the correspondence position of base push card into by two guiding protuberances 214 of base respectively.
As shown in Figure 6, the electromagnetic relay that a kind of contact biasing of the present invention is placed, when armature part 13 is during in neutral condition, contact gap L1 between its normally opened contact and the contact gap L2 between normally-closed contact are that size is unequal, the angle that its occurrence turns over respect to neutral condition in the time of can be according to the set of armature part and involution is combined the bias L3 of armature partial arc shape structure 132 and its spindle central, and the method for calculating by dimension chain is specifically calculated.
In the process of relay set and involution, although its armature part 13 is identical with respect to neutral condition forward or the angle of reversing, but because armature partly has bias L3, so its push card 31 is advanced during with respect to neutral condition or the stroke that retreats is different, by contact gap L1 between different normally opened contacts and the contact gap L2 between normally-closed contact are set, thereby compensated the push card problem different from the stroke retreating of advancing, therefore, after relay has assembled, without special adjustment, the contact contact overtravel that just can guarantee its normally opened contact end equates 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, and when armature part 13 is during 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, be all close on the barricade of the 3rd draw-in groove 312 of push card; When relay is during in set position, as shown in Figure 8 (b) shows, it often starts contact 322 and is subject to often opening the pressure transmitting on fixed contact 222 and drives and often open contact chip 321 Compress Spring 33 backward, thereby form gap X1 often opening between the 3rd draw-in groove barricade of contact chip 321 and push card, the value of X1 is the overtravel of this Chang Kaiduan contact, be also armature combination when SM set mode its spring with respect to the decrement of armature combination spring when the neutral condition; When relay is during in involution position, as shown in Fig. 8 (c), its normally closed moving contact 342 is subject to the pressure transmitting on normally closed fixed contact 232 and drives normally closed contact chip 341 Compress Spring 33 backward, thereby form gap X2 between the 3rd draw-in groove barricade of normally closed contact chip 341 and push card, the value of X2 is the overtravel of this normal-closed end contact, is also the decrement that armature combines stage clip when its stage clip combines in neutral condition with respect to armature when involution state.Because the present invention is by arranging contact gap L1 between different normally opened contacts and the contact gap L2 between normally-closed contact, compensated the push card problem different from the stroke retreating of advancing, thereby the contact overtravel X1 that can guarantee Chang Kaiduan equals the contact overtravel X2 of normal-closed end, so, at SM set mode lower spring, with respect to the decrement X1 under neutral condition, also equal the decrement X2 with respect to neutral condition at involution state lower spring, therefore, the present invention can guarantee no matter at set or involution state, spring is owing to by compression contact force between the closing contact of the contact generation on contact chip being equated, be that Chang Kaiduan contact force equates all the time with normal-closed end contact force.
The electromagnetic relay that a kind of contact biasing of the present invention is placed, its armature part 13 is provided with the arc-shaped structure 132 of the use that matches 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, coordinating of the first draw-in groove 317 by armature part and push card part, clockwise or counterclockwise the rotatablely moving in a circumferential direction of armature part is converted to the reciprocating motion of push card part in rectilinear direction, thereby drive connection or the disjunction of moving contact realization and fixed contact.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, push card is by the horizontal thrust being 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, thereby guaranteed the stability that push card is moved in the horizontal direction, avoided the play of moving contact in the vertical direction, thereby improved the electricity function index of product.
The electromagnetic relay that a kind of contact biasing of the present invention is placed, when armature part is during in neutral condition, contact gap L1 between its normally opened contact and the contact gap L2 between normally-closed contact are that size is unequal, thereby compensated problems different with respect to neutral condition stroke while there is push card set that bias causes and release (involution) due to armature partial arc shape structure and its spindle central, thereby after having guaranteed that relay has assembled, without special adjustment, just can guarantee that the contact overtravel of its normally opened contact end equates with normally-closed contact terminal contacts overtravel; And, due to relay provided by the present invention, similar other conventional relays are not set and are fixed on like that the movable contact spring on base, but contact chip (being equivalent to movable contact spring) is arranged in push card reciprocating with push card, therefore, push card set during from release (involution) problem different with respect to neutral condition stroke can not cause the existing different problem of the reed closing of contact pressure that produce different from normally closed movable contact spring deformation quantity of often starting owing to its moving spring being applied to different promotion strokes and causing of similar other conventional relays.Relay provided by the present invention, its contact chip is arranged in push card, the contact chip back side is provided with spring and withstands contact chip part, moving contact on contact chip just started with quiet spring on fixed contact when closed, contact chip starts the pressure that is subject to transmitting from fixed contact, thereby further compress the spring at its back side, start to produce closing contact pressure, in the present invention, no matter relay set or release (involution), under the drive of contact chip part in push card, move to after moving contact and the complete closure of fixed contact, due on base between normally opened contact between contact gap and normally-closed contact contact gap asymmetric problems different with respect to neutral condition stroke when having compensated armature partial arc shape structure and its spindle central and having push card set that bias causes and release (involution) is set, therefore, no matter be normally opened contact end or normally-closed contact end, when moving, after the complete closure of fixed contact, its decrement that spring is produced is identical, therefore, no matter be normally opened contact end or normally-closed contact end, the closing of contact pressure of its generation is also identical, thereby guaranteed 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 biasing of the present invention is placed; but the present invention is not limited to embodiment; any simple modification, equivalent variations and modification that every foundation technical spirit of the present invention is done above embodiment, all fall in the protection range of technical solution of the present invention.
Claims (14)
1. the electromagnetic relay that contact biasing is placed, comprises magnetic circuit part, base, push card part and the combination of quiet spring; Magnetic circuit part comprises coil, yoke and armature part, and wherein, armature is partly provided with the central rotating shaft that can make its rotation; Described quiet spring combination comprises often opens quiet spring combination and normally closed quiet spring combination, often opens quiet spring combination and normally closed quiet spring and combines respectively by static contact spring piece and the fixed contact that is fixed on static contact spring piece and form; Described push card partly comprises push card, often opens contact chip part and normally closed contact chip part, often opening contact chip part and normally closed contact chip partly consists of contact chip and the moving contact being 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 that is provided with center line while 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 passes into forward or backwards exciting current, 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 and the armature of neutral condition partly match, often start contact and often open contact gap L1 between fixed contact and the contact gap L2 between normally closed moving contact and normally closed fixed contact, meet formula: L1 ≠ L2.
2. the electromagnetic relay that contact according to claim 1 biasing is placed, 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. the electromagnetic relay that contact according to claim 1 biasing is placed, is characterized in that: described push card part also comprises spring, described contact chip by spring fitting in push card.
4. the electromagnetic relay that contact according to claim 3 biasing is placed, is characterized in that: described contact chip passes through two spring fittings in push card.
5. the electromagnetic relay of placing according to the contact biasing described in claim 3 or 4, it is characterized in that: in described push card, be provided with for being nested with the projection of described spring, one end of described spring and described contact chip lean, and the other end of spring is nested with on described projection.
6. the electromagnetic relay that contact according to claim 5 biasing is placed, is characterized in that: the inner side of described contact chip is simultaneously provided with pit, one end of described spring is embedded in the pit of described contact chip.
7. the electromagnetic relay that contact according to claim 6 biasing is placed, it is characterized in that: the end of described push card is provided with the 3rd draw-in groove that packs described contact chip for activity into, in the inboard of the 3rd draw-in groove, be provided with for holding the holding tank of described spring, 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 that withstands on contact chip and described push card.
8. the electromagnetic relay of placing according to the contact biasing described in claim 6 or 7, 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. the electromagnetic relay that contact according to claim 1 biasing is placed, it is characterized in that: described push card part is installed on base by push card, bottom in push card is provided with snap fit, in the corresponding position of base, be provided with the second draw-in groove of the snap fit that adapts to described push card, this the second draw-in groove along continuous straight runs arranges, and described push card is by being installed on described snap fit and coordinating of described the second draw-in groove on base and can sliding along described the second draw-in groove.
10. the electromagnetic relay that contact according to claim 9 biasing is placed, it is characterized in that: the snap fit of the bottom of described push card is made as two, described two snap fits are the symmetrical both sides that come and go moving direction along push card that are located at respectively, in the corresponding position of base, be respectively equipped with two place's the second draw-in grooves, by described two snap fits, active card is clipped on base described push card with described two the second coordinating of draw-in groove.
The electromagnetic relay that 11. contact according to claim 9 biasings are placed, it is characterized in that: on described base, be also provided with the first opening being connected with described the second draw-in groove, the snap fit of described push card packs in the second draw-in groove of described base by the first opening of base, and making push card when packing base into, the first draw-in groove of push card partly matches with the armature of neutral condition.
The electromagnetic relay that 12. contact according to claim 9 biasings are placed, it is characterized in that: the bottom center of described push card is provided with the guiding rib that comes and goes moving direction along push card, in the position corresponding with guiding rib push card base, be provided with gathering sill, the guiding rib activity of described push card is engaged in the gathering sill of base.
The electromagnetic relay that 13. contact according to claim 9 biasings are placed, it is characterized in that: in described push card, be also provided with guiding breach, in the corresponding position of base, be provided with guiding protuberance, the guiding breach of described push card packs in the correspondence position of base push card into by the guiding protuberance of base, and making push card when packing base into, the draw-in groove of push card partly matches with the armature of neutral condition.
The electromagnetic relay that 14. contact according to claim 13 biasings are placed, it is characterized in that: the guiding breach of described push card is two, described two guiding breach are the symmetrical both sides that come and go moving direction along push card that are located at respectively, in the corresponding position of base, be respectively equipped with two guiding protuberances, two guiding breach of described push card pack in the correspondence position of base push card into by two guiding protuberances of base respectively.
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| Application Number | Priority Date | Filing Date | Title |
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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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| Application Number | Priority Date | Filing Date | Title |
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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 true CN103715026A (en) | 2014-04-09 |
| CN103715026B CN103715026B (en) | 2015-10-28 |
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| CN201210382424.XA Active CN103715026B (en) | 2012-09-29 | 2012-09-29 | A kind of contact is biased the electromagnetic relay of placement |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108511272A (en) * | 2018-04-09 | 2018-09-07 | 三友联众集团股份有限公司 | A kind of upright magnetic latching relay of Improvement type |
| CN108962686A (en) * | 2018-08-08 | 2018-12-07 | 漳州宏发电声有限公司 | A kind of electromagnetic relay for dual power supply switching |
| CN109585226A (en) * | 2018-11-30 | 2019-04-05 | 漳州宏发电声有限公司 | It is a kind of can the multiple groups contact electromagnetic relay that falls of shock resistance and drop resistant |
| 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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| CN201549449U (en) * | 2009-12-01 | 2010-08-11 | 李健全 | Single-phase magnetic latching relay |
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| 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 |
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| CN108511272A (en) * | 2018-04-09 | 2018-09-07 | 三友联众集团股份有限公司 | A kind of upright magnetic latching relay of Improvement type |
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| CN108962686A (en) * | 2018-08-08 | 2018-12-07 | 漳州宏发电声有限公司 | A kind of electromagnetic relay for dual power supply switching |
| CN109585226A (en) * | 2018-11-30 | 2019-04-05 | 漳州宏发电声有限公司 | It is a kind of can the multiple groups contact electromagnetic relay that falls of shock resistance and drop resistant |
| 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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|---|---|
| CN103715026B (en) | 2015-10-28 |
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