CN214336650U - Long-electric-life small-sized clapper type relay - Google Patents

Abstract

The utility model discloses a small clapper type relay with long electric service life, which comprises a coil rack, a normally open static spring and a normally closed static spring; the coil frame is provided with an iron core mounting hole; the normally open static spring and the normally closed static spring are respectively inserted on the coil rack corresponding to one end of the iron core mounting hole; the normally closed static spring is provided with two mounting legs at two sides of the width respectively, and a leading-out pin of the normally closed static spring is arranged in the middle between the two mounting legs and is arranged in the opposite direction of the mounting legs; in the coil rack, two blind holes are arranged at the insertion position corresponding to the normally closed static spring, and the normally closed static spring is respectively inserted into the two blind holes of the coil rack through the mounting legs at the two sides of the width and is in interference fit with the mounting legs. The utility model can avoid the bad influence on the relay performance caused by the inclination when the normally closed static spring is arranged in the coil rack; and excessive accumulation of scraps generated by erosion of the contact due to electric arc in the working process of the relay is avoided, and the effect of prolonging the electric service life of the relay is achieved.

Description

Long-electric-life small-sized clapper type relay

Technical Field

The utility model relates to a relay technical field especially relates to a long electric life's small-size clapping type relay.

Background

A relay is an electronic control device having a control system (also called an input loop) and a controlled system (also called an output loop), which is commonly used in automatic control circuits, and which is actually an "automatic switch" that uses a small current to control a large current. Therefore, the circuit plays the roles of automatic regulation, safety protection, circuit conversion and the like.

A small clapper type relay in the prior art is characterized in that a normally open static spring and a normally closed static spring of a contact part are arranged in a flange at one end of an iron core mounting hole of a coil rack of the relay in an inverted insertion mode, when the clapper type relay is inversely inserted, the contact part of the normally closed static spring is arranged at the upper part, the contact part of the normally open static spring is arranged at the lower part, the contact part of a movable spring is arranged in the middle, leading-out pins of the normally closed static spring and the normally open static spring are arranged upwards, and the leading-out pins of the normally closed static spring and the normally open static spring are arranged downwards when the clapper type relay is used, so that the contact part is positioned in the bottom area of the relay, the relay has the characteristics of short load current path and small heating amount when the relay works, but because the contact part of the relay is positioned at the bottom of the relay, the contact part of the normally open static spring, the contact part of the normally closed static spring and the contact part of the movable spring are gathered together, and the space is narrow, the following disadvantages exist:

firstly, the quiet spring of normal close is when the assembly, insert the coil former and can only unilateral atress (this is because the pin of drawing forth of the quiet spring of normal close designs in one side of quiet spring usually), and the small-size clapper type relay of this kind of flip-chip formula is because the space is compact, the area that can't accomplish the quiet spring of normal close and impress the force position is accomplished great, just so cause the assembly position slope of the quiet spring of normal close and coil former easily, and because this kind of assembly is out of position produces the contact skew, or because unilateral atress, lead to the quiet spring of normal close to insert the coil former and lead to the coil former to break, and then produce harmful effects to the performance of relay.

Secondly, in the working process of the relay, because the contacts are switched off and switched on to generate electric arcs to erode the contacts, a large amount of dust generated in the working process of the relay contacts is gathered in the bottom range of the relay in the working process, so that the voltage resistance and the insulation between the relay contacts are reduced, and the working electric service life of the relay is shortened.

Thirdly, in the relay production process, because the contact part of this type of relay is located the bottom of relay, the space is narrow, can't get rid of the foreign matter granule that the production process produced through the mode of blowing, leads to the relay to produce trouble such as contact nonconducting easily.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide a small clapper type relay with long electric service life, and through structural improvement, on one hand, the adverse effect on the performance of the relay caused by the inclination generated when a normally closed static spring is arranged in a coil frame can be avoided; on the other hand, the excessive accumulation of sweeps generated by corroding the contacts due to electric arcs in the working process of the relay can be avoided, the effect of prolonging the electric service life of the relay is achieved, foreign particles generated in the production process are conveniently removed, and therefore the probability of the non-conduction fault of the contacts generated by the relay is reduced.

The utility model provides a technical scheme that its technical problem adopted is: a small clapper type relay with long electric service life comprises a coil rack, a normally open static spring and a normally closed static spring; the coil frame is provided with an iron core mounting hole; the normally open static spring and the normally closed static spring are respectively inserted on the coil rack corresponding to one end of the iron core mounting hole; the normally closed static spring is provided with two mounting legs at two sides of the width respectively, and a leading-out pin of the normally closed static spring is arranged in the middle between the two mounting legs and is arranged in the opposite direction of the mounting legs; in the coil former, be equipped with two blind holes corresponding to the cartridge position of quiet spring of normally closed, the quiet spring of normally closed passes through the installation leg on width both sides cartridge respectively in two blind holes of coil former and interference fit to utilize the balanced application of force in both sides when the quiet spring of normally closed assembles, thereby appear crooked in avoiding the quiet spring of normally closed and the coil former assembly.

The coil frame comprises an upper flange, a lower flange and a winding window which is connected between the upper flange and the lower flange and is wound with an enameled wire, and the iron core mounting hole penetrates through the upper flange and the lower flange; the opposite two sides of the upper flange are respectively provided with a first protruding part and a second protruding part in an upward protruding way, and the normally open static spring and the normally closed static spring are respectively inserted in the first protruding part and the second protruding part; the blind hole is arranged in the second protruding part.

The relay further includes a moving spring armature member; the normally open static spring, the normally closed static spring and the dynamic spring armature component are respectively provided with a contact part provided with a contact, the normally open static spring is inserted in the first protruding part to enable the contact part of the normally open static spring to be positioned on the upper surface of the upper flange, the normally closed static spring is inserted in the second protruding part to enable the contact part of the normally closed static spring to be positioned above the contact part of the normally open static spring, and the contact part of the dynamic spring armature component is arranged between the contact part of the normally open static spring and the contact part of the normally closed static spring; the surrounding spaces of the contact portions of the normally open stationary spring, the normally closed stationary spring and the movable spring armature member are isolated from the winding window side space of the bobbin by the upper flange.

In the second protruding part, in the area between the two blind holes, a through hole which leads to the outside of the side edge and corresponds to the moving direction of the electric arc when the contact is disconnected is further arranged, so that the air in the space around the contact can be led out through the through hole by utilizing the movement of the electric arc, the air ionization degree of the space around the contact is reduced, and the service life of a product is prolonged.

And a notch communicated with the through hole is further arranged at the outer side end of the through hole corresponding to the second protruding part in the upper flange of the coil frame, so that air in the space around the contact is guided to the space at the side of the winding window by utilizing the notch and the through hole.

The upper end of the through hole is close to the top end of the second protruding portion, and the lower end of the through hole is connected to the upper surface of the upper flange, so that foreign particles generated in the relay assembling process can be blown out by the through hole.

The contact part of the normally closed static spring is vertical to the mounting leg of the normally closed static spring, and the mounting leg of the normally closed static spring is also provided with a shoulder protruding outwards from the side edge; in the second protruding extension part, a sunken step surface is arranged at the hole edge of the blind hole; and when the mounting leg of the normally closed static spring is inserted and matched with the blind hole of the coil rack, the shoulder of the mounting leg is propped against the step surface of the second protruding part.

Shoulders of two mounting legs of the normally closed static spring are respectively arranged on two sides corresponding to the width of the normally closed static spring.

The two mounting legs of the normally closed static spring are respectively provided with a convex part which is used for being in interference fit with the blind hole of the coil rack, and the convex parts are in barb structures; the convex portion and the shoulder are respectively provided on opposite sides of the mounting leg.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model adopts the normally closed static spring, two sides of the width are respectively provided with a mounting leg, and the leading-out foot of the normally closed static spring is arranged in the middle between the two mounting legs and is arranged in the opposite direction of the mounting legs; in the coil rack, two blind holes are arranged at the insertion position corresponding to the normally closed static spring, and the normally closed static spring is respectively inserted into the two blind holes of the coil rack through the mounting legs at the two sides of the width and is in interference fit with the mounting legs. The utility model discloses a both sides balanced application of force when can utilizing the quiet spring of normal close to assemble to appearing crooked in avoiding the quiet spring of normal close and the coil former assembly, and the quiet spring of normal close pin-outs is located between two installation legs, can also improve the creepage distance that pin-outs were drawn forth to coil pin-outs and the quiet spring of normal close.

2. The utility model discloses owing to adopted in the protruding portion of stretching of second, in corresponding to the region between two blind holes, still be equipped with and lead to the side outer and be the through-hole that electric arc moving direction when corresponding to the contact disconnection to and in the upper flange of coil former, at the outside end that corresponds to the through-hole of the protruding portion of second, still be equipped with the breach that the through-hole is linked together. The utility model discloses a this kind of structure can utilize electric arc to remove and lead to wire winding window side space through the passageway that through-hole and breach are constituteed with the air in space around the contact to reduce the air ionization degree in space around the contact, make the sweeps that produces in the relay electricity life-span process effectively spread, improve product electric durability, avoid adopting the volume around the sacrificial contact to reduce the air ionization degree among the prior art simultaneously, and then realize the miniaturization.

3. The utility model discloses owing to adopted and be close to the upper end of through-hole the top of the protruding portion of second, the lower extreme of through-hole links to the upper surface of upper flange. The utility model discloses a this kind of structure can utilize the through-hole can blow off the foreign matter granule that relay assembling process produced.

4. The utility model adopts the technical proposal that the mounting leg of the normally closed static spring is also provided with a shoulder which extends outwards from the side edge; in the second protruding extension part, a sunken step surface is arranged at the hole edge of the blind hole; and when the mounting leg of the normally closed static spring is inserted and matched with the blind hole of the coil rack, the shoulder of the mounting leg is propped against the step surface of the second protruding part. The utility model discloses a this kind of structure can utilize the cooperation of circular bead and step face, further prevents that the quiet spring of normal close and coil former from appearing crooked in the assembly, and force application position and blind hole position are on same axis when making the quiet spring of normal close insert the coil former, avoid taking place the quiet spring of normal close and insert the phenomenon of slope.

The present invention will be described in further detail with reference to the accompanying drawings and examples; however, the present invention is not limited to the embodiment, and a small clapper relay with a long electrical life is provided.

Drawings

Fig. 1 is an exploded perspective view (upside-down, i.e. with the lead pins facing upward) of an embodiment of the present invention;

fig. 2 is a schematic perspective view of an embodiment of the present invention (in an upside-down state, without a housing and a bottom plate, and with a normally closed static spring to be installed in a coil bobbin);

fig. 3 is a top view of an embodiment of the invention (without the housing and base plate);

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;

fig. 5 is a schematic perspective view of a coil according to an embodiment of the present invention;

fig. 6 is a schematic perspective view of a coil (with lead pins facing down) according to an embodiment of the present invention;

fig. 7 is a schematic perspective view of a coil (with lead pins facing forward) according to an embodiment of the present invention;

fig. 8 is a perspective view of the bottom plate according to the embodiment of the present invention.

Detailed Description

Examples

Referring to fig. 1 to 8, the small clapper relay with long electrical life of the present invention includes a housing 1, a coil portion, a normally open static spring 2, a normally closed static spring 3, an iron core 41, a yoke 42, a movable spring and armature component 5, a bottom plate 61 and a partition plate 62; the coil part includes the bobbin 7, the enamel wire 81 and the coil terminal 82 (shown in fig. 1); the coil rack 7 is provided with an iron core mounting hole 71, the iron core 41 is mounted in the iron core mounting hole 71 of the coil rack 7, an enameled wire 81 is wound at a winding window of the coil rack 7, the yoke 42 is matched with the coil rack 7, one end of the yoke 42 is fixed with the iron core 41, the other end of the yoke 42 is provided with a knife edge, and the movable spring armature component 5 is matched at the knife edge of the yoke 42; the normally open static spring 2 and the normally closed static spring 3 are respectively inserted on a coil rack 7 corresponding to one end of the iron core mounting hole; in the normally closed static spring 3, two sides of the width are respectively provided with a mounting leg 31, and a leading-out pin 32 of the normally closed static spring 3 is arranged in the middle between the two mounting legs 31 and is arranged in the opposite direction of the mounting legs 31; in the coil former 7, be equipped with two blind holes 72 corresponding to the cartridge position of normally closed static spring 3, the installation leg 31 on normally closed static spring 3 both sides through the width is cartridge respectively in two blind holes 72 of coil former 7 and interference fit to utilize the balanced application of force on both sides when normally closed static spring 3 assembles, thereby appear crooked in avoiding normally closed static spring 3 and the assembly of coil former 7. After the normally open static spring 2, the normally closed static spring 3, the iron core 41, the yoke 42, the movable spring armature component 5 and other components are assembled with the coil frame 7, the normally open static spring 2, the normally closed static spring 3 and the coil terminal 82 are arranged upwards, and the partition plate 62 is arranged between the yoke 42 and the enameled wire 81, wherein the normally open static spring 2, the normally closed static spring 3, the yoke 42 and the movable spring armature component 5 are arranged in the shell 1 and covered with the bottom plate 61.

In this embodiment, the bobbin 7 includes an upper flange 73, a lower flange 74, and a winding window wound with an enamel wire and connected between the upper flange and the lower flange, and the core mounting hole 71 penetrates through the upper and lower flanges; the two opposite sides of the upper flange 73 are respectively provided with a first protruding part 75 and a second protruding part 76 in an upward protruding way, and the normally open static spring 2 and the normally closed static spring 3 are respectively inserted into the first protruding part 75 and the second protruding part 76; the blind hole 72 of the bobbin 7 is provided in said second projection 76. It should be noted that the upper and lower equal orientation definitions in the present invention only indicate the relative positional relationship between the components or structures, and the upper flange 73 and the lower flange 74 indicate the positional distribution of the two flanges of the bobbin when the static spring is flipped.

In this embodiment, the normally open static spring 2, the normally closed static spring 3 and the moving spring armature component 5 respectively have contact parts with contacts, that is, the normally open static spring 2 has a contact part 22 with contacts, the normally closed static spring 3 has a contact part 33 with contacts, the moving spring armature component 5 comprises a moving spring 51 and an armature 52, and the contact part with contacts of the moving spring armature component 5 is a tail end section of the moving spring 51 with contacts; the normally open static spring 2 is inserted into the first protruding part 75 so that the contact part 22 of the normally open static spring 2 is positioned on the upper surface of the upper flange 73, the normally closed static spring 3 is inserted into the second protruding part 76 so that the contact part 33 of the normally closed static spring 3 is positioned above the contact part 22 of the normally open static spring 2, and the contact part 53 of the movable spring armature component 5 is arranged between the contact part 22 of the normally open static spring 2 and the contact part 33 of the normally closed static spring 3; the contact portion 22 of the normally open stationary spring 2, the contact portion 33 of the normally closed stationary spring 3, and the surrounding space 91 of the contact portion 53 of the moving spring armature member 5 are isolated from the winding window side space 92 of the bobbin 7 by the upper flange 75.

In this embodiment, the second protrusion 76 is further provided with a through hole 761, which is opened to the outside of the side and corresponds to the moving direction of the arc when the contact is opened, in the area corresponding to the space between the two blind holes 72, so that the air in the space 91 around the contact can be guided out through the through hole 761 by the arc movement, thereby reducing the ionization degree of the air in the space around the contact and improving the service life of the product.

In this embodiment, the upper flange 73 of the bobbin 7 is further provided with a notch 731 communicating with the through hole 761 at an outer end corresponding to the through hole 761 of the second protrusion 76, so that the air in the contact surrounding space 91 is guided to the winding window side space 92 by the notch 731 and the through hole 761.

In this embodiment, the upper end of the through hole 761 is close to the top end of the second protrusion 76, and the lower end of the through hole 761 is connected to the upper surface of the upper flange 73, that is, the mounting surface of the contact portion 22 of the normally open stationary spring 2, so that foreign particles generated during the relay assembling process can be blown out by the through hole 761.

In this embodiment, the contact portion 33 of the normally closed static spring 3 is perpendicular to the mounting leg 31 of the normally closed static spring, and the mounting leg 31 of the normally closed static spring 3 is further provided with a shoulder 311 protruding outwards from the side; a recessed step surface 762 is provided in the second projecting portion 76 at the hole edge of the blind hole 72; when the mounting leg 31 of the normally closed stationary spring 3 is inserted into the blind hole 72 of the bobbin 7, the shoulder 311 of the mounting leg 31 abuts against the step surface 762 of the second protrusion 76.

In the present embodiment, the shoulders 311 of the two mounting legs 31 of the normally closed stationary spring 3 are respectively provided on both sides corresponding to the width of the normally closed stationary spring 3.

In this embodiment, the two mounting legs 31 of the normally closed static spring 3 are further respectively provided with a convex portion 312 for interference fit with the blind hole 72 of the coil former 7, and the convex portions 312 are provided with a barb structure; the projection 312 and the shoulder 311 are provided on opposite sides of the mounting leg 31, respectively.

The utility model discloses a long electric life's small-size clapper type relay, adopted in the said normally closed static spring 3, there is a mounting leg 31 respectively at both sides of the width, the pin 32 of drawing forth of the normally closed static spring is set up in the middle between two mounting legs 31 and is opposite to mounting leg 31; two blind holes 72 are formed in the coil rack 7 corresponding to the insertion position of the normally closed static spring 3, and the normally closed static spring 3 is respectively inserted into the two blind holes 72 of the coil rack 7 through the mounting legs 31 on two sides of the width and is in interference fit with the mounting legs. The utility model discloses a both sides balanced application of force when can utilizing the quiet spring of normal close to assemble to appearing crooked in avoiding the quiet spring of normal close and the coil former assembly, and the quiet spring of normal close pin-outs is located between two installation legs, can also improve the creepage distance that pin-outs were drawn forth to coil pin-outs and the quiet spring of normal close.

The utility model discloses a long electric life's small-size clapping type relay has adopted in the protruding portion 76 of second, in corresponding to the region between two blind holes 72, still be equipped with and access to the side outer and be corresponding to the through-hole 761 of arc moving direction when the contact breaks off to and in the last flange 73 of coil former 7, in the outside end of the through-hole 761 corresponding to the protruding portion 76 of second, still be equipped with breach 731 that the through-hole is linked together. The utility model discloses a this kind of structure can utilize electric arc to remove and lead to wire winding window side space 92 through the passageway that through-hole and breach are constituteed with the air of contact surrounding space 91 to reduce the air ionization degree of contact surrounding space, make the sweeps effective diffusion that produces among the relay electricity life-span process, improve product electric durability, avoid adopting the volume around the sacrificial contact to reduce the air ionization degree among the prior art simultaneously, and then realize the miniaturization.

The utility model discloses a long electric life's small-size clapper formula relay has adopted the upper end with through-hole 761 to be close to the top of second protruding portion 76, the lower extreme of through-hole 761 link to go up the higher authority of flange 73. The utility model discloses a this kind of structure can utilize through-hole 761 can blow off the foreign matter granule that relay assembling process produced.

The utility model discloses a small clapper type relay with long electric service life, which adopts the technical scheme that a shoulder 311 protruding outwards from the side edge is arranged on a mounting leg 31 of a normally closed static spring 3; a recessed step surface 762 is provided in the second projecting portion 76 at the hole edge of the blind hole 72; when the mounting leg 31 of the normally closed stationary spring 3 is inserted into the blind hole 72 of the coil bobbin 7, the shoulder 311 of the mounting leg 31 abuts against the step surface 762 of the second protrusion. The utility model discloses a circular bead 311 and the cooperation of step face 762 can be utilized to this kind of structure, further prevent that the quiet spring of normal close and coil former from appearing crooked in the assembly, and force application position and blind hole position are on same axis when making the quiet spring of normal close insert the coil former, avoid taking place the quiet spring of normal close and insert the phenomenon of slope.

The foregoing is illustrative of the preferred embodiment of the present invention and is not to be construed as limiting the invention in any way. Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. The technical solutions disclosed above can be used by those skilled in the art to make many possible variations and modifications, or to modify equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention should fall within the protection scope of the technical solution of the present invention.

Claims (9)

1. A small clapper type relay with long electric service life comprises a coil rack, a normally open static spring and a normally closed static spring; the coil frame is provided with an iron core mounting hole; the normally open static spring and the normally closed static spring are respectively inserted on the coil rack corresponding to one end of the iron core mounting hole; the method is characterized in that: the normally closed static spring is provided with two mounting legs at two sides of the width respectively, and a leading-out pin of the normally closed static spring is arranged in the middle between the two mounting legs and is arranged in the opposite direction of the mounting legs; in the coil former, be equipped with two blind holes corresponding to the cartridge position of quiet spring of normally closed, the quiet spring of normally closed passes through the installation leg on width both sides cartridge respectively in two blind holes of coil former and interference fit to utilize the balanced application of force in both sides when the quiet spring of normally closed assembles, thereby appear crooked in avoiding the quiet spring of normally closed and the coil former assembly.

2. A long electrical life miniature clapper relay according to claim 1, wherein: the coil frame comprises an upper flange, a lower flange and a winding window which is connected between the upper flange and the lower flange and is wound with an enameled wire, and the iron core mounting hole penetrates through the upper flange and the lower flange; the opposite two sides of the upper flange are respectively provided with a first protruding part and a second protruding part in an upward protruding way, and the normally open static spring and the normally closed static spring are respectively inserted in the first protruding part and the second protruding part; the blind hole is arranged in the second protruding part.

3. A long electrical life miniature clapper relay according to claim 2, wherein: the relay further includes a moving spring armature member; the normally open static spring, the normally closed static spring and the dynamic spring armature component are respectively provided with a contact part provided with a contact, the normally open static spring is inserted in the first protruding part to enable the contact part of the normally open static spring to be positioned on the upper surface of the upper flange, the normally closed static spring is inserted in the second protruding part to enable the contact part of the normally closed static spring to be positioned above the contact part of the normally open static spring, and the contact part of the dynamic spring armature component is arranged between the contact part of the normally open static spring and the contact part of the normally closed static spring; the surrounding spaces of the contact portions of the normally open stationary spring, the normally closed stationary spring and the movable spring armature member are isolated from the winding window side space of the bobbin by the upper flange.

4. A long electrical life miniature clapper relay according to claim 3, wherein: in the second protruding part, in the area between the two blind holes, a through hole which leads to the outside of the side edge and corresponds to the moving direction of the electric arc when the contact is disconnected is further arranged, so that the air in the space around the contact can be led out through the through hole by utilizing the movement of the electric arc, the air ionization degree of the space around the contact is reduced, and the service life of a product is prolonged.

5. The long electrical life miniature clapper relay of claim 4, wherein: and a notch communicated with the through hole is further arranged at the outer side end of the through hole corresponding to the second protruding part in the upper flange of the coil frame, so that air in the space around the contact is guided to the space at the side of the winding window by utilizing the notch and the through hole.

6. The long electrical life miniature clapper relay of claim 4, wherein: the upper end of the through hole is close to the top end of the second protruding portion, and the lower end of the through hole is connected to the upper surface of the upper flange, so that foreign particles generated in the relay assembling process can be blown out by the through hole.

7. The long electrical life miniature clapper relay of claim 4, wherein: the contact part of the normally closed static spring is vertical to the mounting leg of the normally closed static spring, and the mounting leg of the normally closed static spring is also provided with a shoulder protruding outwards from the side edge; in the second protruding extension part, a sunken step surface is arranged at the hole edge of the blind hole; and when the mounting leg of the normally closed static spring is inserted and matched with the blind hole of the coil rack, the shoulder of the mounting leg is propped against the step surface of the second protruding part.

8. The long electrical life miniature clapper relay of claim 7, wherein: shoulders of two mounting legs of the normally closed static spring are respectively arranged on two sides corresponding to the width of the normally closed static spring.

9. A long electrical life miniature clapper relay according to claim 7 or 8, wherein: the two mounting legs of the normally closed static spring are respectively provided with a convex part which is used for being in interference fit with the blind hole of the coil rack, and the convex parts are in barb structures; the convex portion and the shoulder are respectively provided on opposite sides of the mounting leg.

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