CN219393276U - Relay capable of improving voltage resistance - Google Patents

Abstract

The utility model discloses a relay for improving pressure resistance, which comprises a base and a magnetic circuit part, wherein the magnetic circuit part comprises a coil rack, the coil rack comprises a first flange part, a second flange part and a winding part arranged between the first flange part and the second flange part, two first jacks are arranged on the first flange part, each jack is respectively inserted with a coil leading-out end, and the coil leading-out ends penetrate through second jacks correspondingly arranged on the base; and one end of the first jack of the first flange part, which is away from the second flange part, is provided with a glue storage groove surrounding the coil leading-out end, and when glue is dispensed for plastic packaging, the glue enters and fills the glue storage groove from a gap between the coil leading-out end and the second jack. The setting of glue storage groove has not only improved the plastic envelope effect, has still increased the creepage distance between coil and the contact, makes the withstand voltage performance between coil and the contact improve greatly.

Description

Relay capable of improving voltage resistance

Technical Field

The present utility model relates to a relay, and more particularly, to a relay with improved withstand voltage performance.

Background

The relay is an electronic control device, which has a control system (also called an input loop) and a controlled system (also called an output loop), is commonly applied to an automatic control circuit, and is actually an 'automatic switch' for controlling a large current by using a small current, so that the relay plays roles of automatic regulation, safety protection, a switching circuit and the like in the circuit.

The electromagnetic relay in the prior art generally comprises a base, a magnetic circuit part, a movable spring part and a static spring part, wherein the magnetic circuit part comprises a coil frame, a coil, an iron core, a yoke and an armature, the movable spring part comprises a movable spring and a movable contact arranged on the movable spring, the static spring part comprises a static spring and a static contact arranged on the movable spring, the movable contact and the static contact are mutually matched, the coil frame comprises two flange parts and a winding part positioned between the two flange parts, the coil is wound on the winding part, and two ends of the coil are respectively electrically connected with two coil leading-out ends of one of the flange parts, which are inserted. Along with the miniaturization development of electromagnetic relays, the volumes of the electromagnetic relays are smaller and smaller, the structures of the electromagnetic relays are compact, the creepage distance between a coil and a contact is short, and therefore the voltage withstand between the coil and the contact is insufficient.

Disclosure of Invention

Aiming at the technical problems existing in the prior art, the utility model provides a relay for improving the voltage withstand performance, which is used for improving the voltage withstand level between a coil and a contact.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides an improve withstand voltage performance's relay, includes base, magnetic circuit part, and magnetic circuit part includes the coil former, and the coil former includes first flange portion, second flange portion and sets up the wire winding portion between first flange portion and second flange portion, is equipped with two first jacks on the first flange portion, and each jack is inserted respectively and is equipped with a coil extraction end, the corresponding second jack that sets up on the base is passed to the coil extraction end; and when the glue is dispensed and packaged, the glue enters and fills the glue storage groove from a gap between the coil leading-out end and the second jack.

Furthermore, the inner side surfaces of the periphery of the glue storage groove are inclined surfaces with the root parts leaning against the coil leading-out ends respectively.

Further, a glue seepage groove is formed in the inner side face of the second jack, so that glue enters the glue storage groove along the glue seepage groove.

Further, two opposite inner side surfaces of the second jack in the width direction are respectively provided with a plurality of glue seepage grooves.

The magnetic circuit part also comprises a coil, an iron core, a yoke iron and an armature iron, wherein the coil is wound on the winding part, and two ends of the coil are respectively and electrically connected with the two coil leading-out ends; the movable spring part comprises a movable spring and a movable contact arranged on the movable spring, the movable spring is fixedly connected with the armature to form a movable spring armature component, and the coil frame, the iron core, the yoke iron and the movable spring armature component are assembled together according to a clapping structure; the fixed spring part comprises a fixed spring plate arranged on the first flange part and a fixed contact arranged on the fixed spring plate, and the movable contact is matched with the fixed contact; the first load leading-out end is electrically connected with the movable spring part, and the second load leading-out end is integrally formed or electrically connected with the static spring; the first load leading-out end and the second load leading-out end respectively penetrate through a third jack arranged on the base.

Further, the movable spring part further comprises a flexible connecting wire, the flexible connecting wire is located at one side of the movable reed opposite to the movable contact, one end of the flexible connecting wire is electrically connected with the movable contact, and the other end of the flexible connecting wire is electrically connected with the first load leading-out end.

Further, the movable reed is made of stainless steel, the soft connecting wire is made of annealed copper wires, and the load leading-out end is made of copper or copper alloy.

Further, the number of the movable contacts is multiple, the movable contacts are arranged in parallel, the number of the static contacts and the number of the flexible connecting wires are respectively the same as the number of the movable contacts, and each movable contact is electrically connected with the first load leading-out end through a flexible connecting wire.

Further, of the plurality of flexible connecting wires, two flexible connecting wires at the outermost side are respectively hung on limiting hooks arranged at two opposite ends of the movable reed.

Further, the first load leading-out terminal is in contact connection with the yoke; an insulating spacer positioned between the coil and the yoke is arranged on the coil frame; the movable spring is L-shaped, one side of the movable spring is fixedly connected with the armature, one side end of the movable spring is provided with the movable contact, and the other side of the movable spring is fixedly connected with the yoke.

Compared with the prior art, the utility model has the following beneficial effects:

1. the first jack of first flange portion is equipped with the glue storage groove around coil leading-out end, and glue is followed when the plastic envelope is glued to the point clearance between coil leading-out end and the first jack gets into and fill in glue storage groove to not only improved the plastic envelope effect, still increased the creepage distance between coil and the contact, made the resistance performance between coil and the contact improve greatly.

2. The inner side surfaces around the glue storage groove are inclined surfaces with the root leaning against the coil leading-out end respectively, so that the volume of the glue storage groove is smaller, the glue consumption is reduced, and the glue is ensured to effectively wrap the periphery of the coil leading-out end.

3. The inner side of the first jack is provided with a glue seepage groove, so that the glue seepage speed can be improved, and the glue seepage effect can be improved.

4. The movable spring part also comprises the flexible connecting wire, so that the load capacity can be conveniently adjusted through the selection of the wire diameter, the flexibility between contacts can be increased, and the contact gap consistency is improved.

5. The coil frame is provided with an insulating spacer positioned between the coil and the yoke, so that an air gap between the coil and the yoke can be separated, and the creepage distance is increased.

The utility model is described in further detail below with reference to the drawings and examples; however, the relay of the present utility model for improving withstand voltage performance is not limited to the embodiment.

Drawings

FIG. 1 is an exploded schematic view of the present utility model;

FIG. 2 is a schematic perspective view of the present utility model (without the base, housing);

FIG. 3 is a top view of FIG. 2;

FIG. 4 is a schematic perspective view showing a combination of a bobbin and two coil terminals according to the present utility model;

FIG. 5 is an enlarged schematic view of portion A of FIG. 4;

FIG. 6 is a bottom view of the base of the present utility model;

FIG. 7 is an enlarged schematic view of portion B of FIG. 6;

FIG. 8 is a bottom view of the present utility model;

FIG. 9 is a cross-sectional view A-A of FIG. 8;

FIG. 10 is an enlarged schematic view of portion C of FIG. 9;

fig. 11 is a schematic perspective view of the moving spring portion, the static spring portion, etc. of the present utility model in a fitted state;

fig. 12 is a front view of fig. 11;

fig. 13 is a schematic perspective view of the movable contact spring of the present utility model;

fig. 14 is a schematic perspective view of a first load terminal of the present utility model;

fig. 15 is a schematic perspective view of a second load lead-out terminal and a static reed of the present utility model;

FIG. 16 is a schematic view of a second perspective construction of the present utility model;

wherein 1, magnetic circuit part, 11, coil former, 111, first flange portion, 1111, first jack, 1112, glue storage tank, 112, second flange portion, 113, winding portion, 12, coil, 13, iron core, 14, yoke, 15, armature, 16, coil leading-out end, 2, moving spring part, 21, moving reed, 211, spacing couple, 212, support piece, 22, moving contact, 23, flexible connection wire, 3, static spring part, 31, static reed, 32, static contact, 4, first load leading-out end, 5, second load leading-out end, 41, welding piece, 42, support leg, 6, base, 61, second jack, 62, third jack, 621, glue permeation tank, 7, housing, 8, insulating spacer.

Detailed Description

In the present disclosure, the terms "first," "second," and the like are used merely to distinguish between similar objects and not necessarily to describe a particular sequence or order, nor are they to be construed as indicating or implying a relative importance. In the description of the present application, unless otherwise indicated, "a plurality" means two or more.

Referring to fig. 1-16, a relay for improving withstand voltage performance of the present utility model includes a base 6, a housing 7, a magnetic circuit portion 1, a moving spring portion 2, a static spring portion 3, a first load lead-out terminal 4, and a second load lead-out terminal 5, the magnetic circuit portion 1 includes a bobbin 11, a coil 12, an iron core 13, a yoke 14, and an armature 15, the bobbin 11 includes a first flange portion 111, a second flange portion 112, and a winding portion 113 disposed between the first flange portion 111 and the second flange portion 112, the coil 12 is wound on the winding portion 113, the first flange portion 111 is provided with two first insertion holes 1111, each of the first insertion holes 1111 is respectively inserted with one or two coil lead-out terminals 16, and the two coil lead-out terminals 16 are respectively electrically connected with both ends of the coil 12. The movable spring part 2 comprises a movable spring 21 and a movable contact 22 arranged on the movable spring 21, the movable spring 21 is fixedly connected with the armature 15 to form a movable spring armature component, and the coil frame 11, the iron core 13, the yoke 14 and the movable spring armature component are assembled together according to a clapping structure. Specifically, the movable spring 21 and the yoke 14 are respectively L-shaped, one side of the yoke 14 is fixedly connected with one end of the iron core 13, the other side of the yoke 14 is matched with the outer side surface of the coil frame 11, one side of the movable spring 21 is fixedly connected with the armature 15, one side end of the movable spring 21 is provided with the movable contact 22, the other side of the movable spring 21 is fixedly connected with the other side of the yoke 14, and the armature 15 is propped against a knife edge of the other side of the yoke 14. The fixed connection mode is riveting, but is not limited to the method. In this way, the movable spring 21 also acts to provide a restoring reaction force to the armature 15, thereby avoiding the need for an additional restoring spring or the like. The stationary spring part 3 includes a stationary spring piece 31 mounted on the first flange part 111 and a stationary contact 32 provided on the stationary spring piece 31, and the movable contact 22 is mated with the stationary contact 32. The first load leading-out end 4 is electrically connected with the movable spring part 2, and the second load leading-out end 5 is electrically connected with the static spring 31 or integrally formed. The two coil outlets 16 respectively pass through second insertion holes 61 correspondingly arranged on the base 6, and the first load outlet 4 and the second load outlet 5 respectively pass through third insertion holes 62 correspondingly arranged on the base 6. The bottom end of the shell 7 is provided with an opening and is connected with the base 6 to contain the magnetic circuit part 1, the movable spring part 2 and the static spring part 3. The first insertion hole 1111 of the first flange 111 is provided with a glue storage groove 114 surrounding the coil lead-out end 16 at one end facing away from the second flange 112, and glue enters and fills the glue storage groove 114 from a gap between the coil lead-out end 16 and the first insertion hole 61 during dispensing and plastic packaging.

In this embodiment, as shown in fig. 4 and 5, the inner side surfaces around the glue storage groove 114 are inclined surfaces with the root portion leaning against the coil leading-out end 16, so that the volume of the glue storage groove 114 is smaller, the glue consumption is reduced, and the glue is ensured to effectively wrap around the coil leading-out end 16.

In this embodiment, the inner side of the second insertion hole 61 is provided with a glue penetration groove 521, so that glue enters the glue storage groove 114 along the glue penetration groove 521. As shown in fig. 6 and 7, a plurality of glue penetrating grooves 521 are respectively formed on two opposite inner sides of the second insertion hole 61 in the width direction. The glue seepage groove 521 can improve the glue seepage speed and the glue seepage effect.

In this embodiment, as shown in fig. 11 and 12, the movable spring part 2 further includes a flexible connection wire 23, the flexible connection wire 23 is located at a side of the movable contact 22 opposite to the movable contact 21, one end of the flexible connection wire 23 is electrically connected to the movable contact 22, and the other end of the flexible connection wire 23 is electrically connected to the first load lead-out terminal 4. Therefore, the utility model is convenient to adjust the load current capacity by selecting the wire diameter of the flexible connecting wire 23, and can also increase the flexibility between contacts and improve the consistency of contact gaps. The movable contact spring 21 is made of stainless steel, is basically free from current, and has better mechanical and fatigue resistance performance than copper alloy. The flexible connection wires 23 are annealed copper wires, and the first load leading-out end 4 and the second load leading-out end 5 are respectively made of copper or copper alloy materials, so that the flexible connection wires have good conductive performance.

In this embodiment, the number of the movable contacts 22 is a plurality, the plurality of movable contacts 22 are arranged in parallel, the number of the stationary contacts 32 is the same as the number of the flexible connection wires 23 and the number of the movable contacts 22, and each movable contact is electrically connected with the first load leading-out terminal 4 through a flexible connection wire. The movable contact point-provided part of the movable contact spring 21 forms a plurality of support pieces 212 through bifurcation, and each support piece 212 is provided with a movable contact point 22. The movable reed 21 adopts a bifurcated design, which is beneficial to improving the flexibility of the movable reed 21. The number of the movable contacts 22 is greater than or equal to three, specifically, in the present embodiment, the number of the movable contacts 22 is four, but not limited to this. Thus, the number of stationary contacts 32 is four and the number of flexible connector wires is four. Therefore, the utility model forms a multi-group contact parallel structure, realizes multi-path flow division, reduces contact resistance, improves current carrying, and simultaneously reduces electric repulsive force through flow division and improves short-circuit current resistance.

In this embodiment, two outermost flexible wires 23 of the plurality of flexible wires are respectively hooked to limiting hooks 211 disposed at two opposite ends of the movable reed 21, as shown in fig. 11-13. Thus, the movable range of the two outermost flexible connection wires 23 can be limited, and the short creepage distance caused by overlapping the coil lead-out ends 16 beside can be prevented.

In this embodiment, as shown in fig. 14, the first load lead-out terminal 4 is provided with a soldering tab 41 extending in the direction of the movable contact 22, and the other end of the flexible connection wire 23 is soldered to the soldering tab 41. The number of the welding pieces 41 is two, but not limited to, the two welding pieces 41 are arranged in parallel, the four flexible connection wires 23 are divided into two groups, and the other ends of the two flexible connection wires 23 of each group are respectively welded on the same welding piece 41.

In this embodiment, the second load leading-out end 5 and the static spring plates 31 are integrally formed, as shown in fig. 15, the number of the static spring plates 31 is specifically two, the two static spring plates 31 are distributed in parallel, and each static spring plate 31 is provided with two static contacts 32 respectively.

In this embodiment, the first load leading-out end 4 is in contact with and connected to the yoke 14, specifically, the first load leading-out end 4 extends to form two legs 42, and as shown in fig. 14, the two legs 42 are respectively connected to the other side of the yoke 14 by riveting or welding. In this way, the first load leading-out end 4 is connected with the yoke 14, the iron core 13, the armature 15 and the movable reed 21 into a whole, so that heat generated by a current-carrying loop can be quickly conducted to metal parts such as the yoke 14, the iron core 13 and the like connected with the first load leading-out end 4, thereby enlarging a radiating surface and preventing heat concentration.

In this embodiment, as shown in fig. 16, the coil frame 11 is provided with the insulating spacer 8 between the coil 12 and the other side of the yoke 14, so that the creepage distance can be increased. The insulating spacer 8 has a substantially rectangular shape, and both ends thereof are respectively engaged with the first flange 111 and the second flange 112 of the bobbin 11.

In this embodiment, the first load lead-out terminal 4, the second load lead-out terminal 5 and the two coil lead-out terminals 16 are dispersed on four sides of the first flange portion 111, so that a sufficient electrical gap and creepage distance between the lead-out terminals are ensured, and the voltage withstand performance of the coil lead-out terminals is improved.

The relay for improving the voltage resistance of the utility model forms a clapping relay, and the arrangement of the glue storage groove 114 not only improves the plastic packaging effect, but also increases the creepage distance between the coil 12 and the contact after plastic packaging and dispensing, thereby greatly improving the voltage resistance between the coil 12 and the contact.

The relay for improving the voltage resistance of the utility model has no related parts which are the same as or can be realized by adopting the prior art.

The above embodiment is only used to further illustrate a relay for improving voltage resistance of the present utility model, but the present utility model is not limited to the embodiment, and any simple modification, equivalent variation and modification of the above embodiment according to the technical substance of the present utility model falls within the protection scope of the technical solution of the present utility model.

Claims (10)

1. The utility model provides an improve withstand voltage performance's relay, includes base, magnetic circuit part, and magnetic circuit part includes the coil former, and the coil former includes first flange portion, second flange portion and sets up the wire winding portion between first flange portion and second flange portion, is equipped with two first jacks on the first flange portion, and each jack is inserted respectively and is equipped with a coil extraction end, the corresponding second jack that sets up on the base is passed to the coil extraction end; the method is characterized in that: and when the glue is dispensed and packaged, the glue enters and fills the glue storage groove from a gap between the coil leading-out end and the second jack.

2. The relay for improving withstand voltage performance according to claim 1, wherein: the inner side surfaces of the periphery of the glue storage groove are inclined surfaces with the root leaning against the coil leading-out end respectively.

3. The relay for improving withstand voltage performance according to claim 1, wherein: and the inner side surface of the second jack is provided with a glue seepage groove so that glue enters the glue storage groove along the glue seepage groove.

4. A relay for improving withstand voltage performance according to claim 3, wherein: and two opposite inner side surfaces of the second jack in the width direction are respectively provided with a plurality of glue seepage grooves.

5. The relay for improving withstand voltage performance according to any one of claims 1 to 4, wherein: the magnetic circuit part also comprises a coil, an iron core, a yoke iron and an armature iron, wherein the coil is wound on the winding part, and two ends of the coil are respectively and electrically connected with the two coil leading-out ends; the movable spring part comprises a movable spring and a movable contact arranged on the movable spring, the movable spring is fixedly connected with the armature to form a movable spring armature component, and the coil frame, the iron core, the yoke iron and the movable spring armature component are assembled together according to a clapping structure; the fixed spring part comprises a fixed spring plate arranged on the first flange part and a fixed contact arranged on the fixed spring plate, and the movable contact is matched with the fixed contact; the first load leading-out end is electrically connected with the movable spring part, and the second load leading-out end is integrally formed or electrically connected with the static spring; the first load leading-out end and the second load leading-out end respectively penetrate through a third jack arranged on the base.

6. The relay for improving withstand voltage performance according to claim 5, wherein: the movable spring part further comprises a flexible connecting wire, the flexible connecting wire is located on one side of the movable reed, which is opposite to the movable contact, one end of the flexible connecting wire is electrically connected with the movable contact, and the other end of the flexible connecting wire is electrically connected with the first load leading-out end.

7. The relay for improving withstand voltage performance according to claim 6, wherein: the movable reed is made of stainless steel, the soft connecting wire is made of annealed copper wires, and the load leading-out end is made of copper or copper alloy.

8. The relay for improving withstand voltage performance according to claim 6, wherein: the number of the movable contacts is multiple, the movable contacts are arranged in parallel, the number of the static contacts and the number of the flexible connecting wires are respectively the same as the number of the movable contacts, and each movable contact is electrically connected with the first load leading-out end through one flexible connecting wire.

9. The relay for improving withstand voltage performance according to claim 6, wherein: and two outermost flexible connecting wires among the plurality of flexible connecting wires are respectively hung on limiting hooks arranged at two opposite ends of the movable reed.

10. The relay for improving withstand voltage performance according to claim 5, wherein: the first load leading-out end is in contact connection with the yoke; an insulating spacer positioned between the coil and the yoke is arranged on the coil frame; the movable spring is L-shaped, one side of the movable spring is fixedly connected with the armature, one side end of the movable spring is provided with the movable contact, and the other side of the movable spring is fixedly connected with the yoke.