CN213583646U - Relay - Google Patents

Abstract

The utility model discloses a relay, which comprises a housin, permanent magnet contactor, and operating handle, permanent magnet contactor includes coil skeleton, twine in coil skeleton's coil, the permanent magnet, but the magnetic conduction iron core of relative coil skeleton removal, the catch bar that links to each other with magnetic conduction iron core, the magnetic conduction armature piece, and the magnetic conduction yoke, the catch bar links to each other with operating handle, be equipped with two at least fixed contacts in the casing, it includes the first fixed contact that links to each other with the input and decides the contact with the second that links to each other with the output, the catch bar is equipped with two at least movable contacts of locating on the same conductive metal piece, when the translation of magnetic conduction iron core, two at least fixed contacts and two at least movable contacts realize the face contact. The utility model designs the number of the fixed contacts and the movable contacts into a plurality of contacts, increases the opening distance between the contacts while increasing the contact area, and the withstand voltage value reaches higher value; the whole structure is simple and effective, and the stable structure is kept at all positions during operation.

Description

Relay

Technical Field

The utility model belongs to the technical field of components and parts and electrical, especially, relate to a relay.

Background

Magnetic latching relays in the market at present are all rotary structures, for example, chinese patent CN104377086 discloses "a bistable pulse relay", in which the rotation of an armature drives a push rod to move, and the rotary structure makes the contact pitch small and the arc extinguishing effect poor.

For another example, chinese patent CN111192796 discloses a magnetic latching relay for small-sized smart home, in which a planar moving contact is in contact with a planar stationary contact under the driving of a moving spring, and the rotary structure has a small contact pitch, and even if the number of the planar stationary contact and the planar moving contact is increased, the cross section of the contact is increased, so as to achieve the effect of larger bearing current, but the effect of increasing the contact pitch is not achieved, and the arc extinguishing effect is not good.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a small relay, the arc extinguishing effect is good, and withstand voltage value is high.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a relay, includes the casing, locates the permanent magnet contactor in the casing, and operating handle, permanent magnet contactor includes the coil skeleton, twines in the coil of coil skeleton, and the permanent magnet, but the magnetic conductive iron core of coil skeleton removal relatively, the catch bar that links to each other with magnetic conductive iron core, magnetic conductive armature piece, and magnetic conductive yoke, the catch bar links to each other with operating handle, be equipped with two at least stationary contacts in the casing, it includes the first stationary contact that links to each other with the input and the second stationary contact that links to each other with the output, the catch bar is equipped with two at least movable contacts of locating on the same conductive metal piece, when the translation of magnetic conductive iron core, two at least stationary contacts and two at least movable contacts realize the face contact.

Furthermore, the shell is provided with a first convex part and a second convex part which is arranged in parallel with the first convex part, the operating handle comprises a connecting rod and an operating part which is convenient for applying external force, the operating part is provided with a first groove body for the first convex part to extend into, the push rod is provided with a second groove body for the second convex part to extend into, and the connecting rod is connected with the push rod in a rotation stopping matching manner; or the shell is provided with a first groove body and a second groove body which is parallel to the first groove body, the operating part is provided with a first convex part which can extend into the first groove body, and the push rod is provided with a second convex part which can extend into the second groove body; or the shell is provided with a first groove body and a second convex part arranged in parallel with the first groove body, the operating part is provided with a first convex part capable of extending into the first groove body, and the push rod is provided with a second groove body for the second convex part to extend into; or, the casing is equipped with first convex part and the second cell body with first convex part parallel arrangement, the operation portion is equipped with the first cell body that supplies first convex part to stretch into, the catch bar is equipped with the second convex part that can stretch into the second cell body.

Further, the projection of the first convex part at least partially falls on the second convex part; the connecting point of the connecting rod and the push rod is arranged opposite to the second groove body; the first convex part and the second convex part are in a transverse strip shape, and the extending direction of the first convex part and the second convex part is parallel to the translation direction of the magnetic conduction iron core.

Furthermore, the at least two fixed contacts and the at least two movable contacts synchronously realize surface contact; the push rod forms a square protrusion, and the end part of the connecting rod forms a square groove for the square protrusion to be inserted in a tight fit mode.

Furthermore, the movable contacts are distributed on two sides of the push rod, and the push rod is connected with elastic pieces which enable the movable contacts to be abutted to the fixed contacts.

Furthermore, be equipped with the spacing cavity that supplies permanent magnet contactor card to go into in the casing, this spacing cavity has the trompil that supplies the catch bar to stretch out, the fixed contact is located the upper and lower both sides of trompil.

Furthermore, the magnetic conducting armature sheet and the magnetic conducting yoke are spliced to form a closed circle and are coated on the outer side of the coil framework, the splicing direction of the magnetic conducting armature sheet and the magnetic conducting yoke is the same as the moving direction of the magnetic conducting iron core, two opposite openings are formed after the magnetic conducting armature sheet and the magnetic conducting yoke are spliced, and pins connected with the coil extend out of the openings.

Furthermore, a limit cavity for the permanent magnet contactor to be clamped is arranged on the shell, and an opening for the pin to extend out is formed in the edge of the limit cavity; the two pins extend out of the lower part of the same opening, and the connecting line of the two pins is parallel to the moving direction of the magnetic conduction iron core.

Furthermore, the magnetic conducting armature sheet is of a flat plate structure, the magnetic conducting yoke is of a frame-shaped structure with a U-shaped cross section, and the cross section of the magnetic conducting armature sheet and the magnetic conducting yoke is square after being spliced; notch grooves are formed on two sides of the magnetic conducting armature sheet, and convex parts which can vertically extend into the notch grooves are formed at corresponding positions of the magnetic conducting yoke; the two pins extend out of the lower part of the same opening, and the connecting line of the two pins is parallel to the moving direction of the magnetic conduction iron core.

Furthermore, the permanent magnets are arranged on the coil framework in pairs and are symmetrically arranged by taking the magnetic conductive iron core as a center.

The utility model has the advantages that: 1) the number of the fixed contacts and the number of the movable contacts are designed to be multiple, the fixed contacts are connected in series, the area of the contacts is increased, the opening distance between the contacts is increased, and the withstand voltage value is higher;

2) the push rod and the connecting rod are in rigid connection and are in rotation stopping fit, so that the operating part drives the push rod to horizontally move without deflection, and then the push rod and the connecting rod are matched with a horizontal sliding groove between the first convex part and the first groove body and between the second convex part and the second groove body, the connecting point of the push rod and the connecting rod is opposite to the second groove body, and the three parts are matched to form a stable quadrilateral matching structure, so that the advantages of good arc extinguishing effect and high pressure resistance are achieved under the condition of ensuring small volume; 3) the whole structure is simple and effective, and the stable structure is kept at all positions during operation.

Drawings

Fig. 1 is a perspective view of the internal structure of the present invention.

Fig. 2 is a front view of the internal structure of the present invention.

Fig. 3 is a sectional view a-a in fig. 2.

Fig. 4 is a schematic view of the matching structure of the operating handle, the moving contact, the fixed contact and the pushing rod of the present invention.

Fig. 5 is a schematic view of the internal decomposition structure of the present invention.

Fig. 6 is a perspective view of the housing of the present invention.

Fig. 7 is a schematic view of the matching structure of the permanent magnet contactor of the present invention, the operating handle and the pushing rod.

Fig. 8 is a schematic diagram of the matching structure of the permanent magnet contactor of the present invention, the operating handle and the pushing rod.

Fig. 9 is a schematic back view of the housing of the present invention.

Fig. 10 is a side view of the housing of the present invention.

Fig. 11 is a perspective view of the permanent magnet contactor according to the present invention (excluding the magnetically conductive armature piece and the magnetically conductive yoke).

Fig. 12 is a schematic view of the internal structure of the present invention.

Fig. 13 is a sectional view taken along line B-B in fig. 12.

Fig. 14 is a first schematic diagram of the permanent magnet contactor according to the present invention with different pin orientations.

Fig. 15 is a schematic diagram two of the pins of the permanent magnet contactor according to the present invention in different orientations.

Fig. 16 is a third schematic diagram of the permanent magnet contactor according to the present invention with different pin orientations.

Detailed Description

In order to make the technical solution of the present invention better understood, the following figures in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

As shown in fig. 1 to 3, a relay includes a housing 4, a permanent magnet contactor disposed in a hollow portion inside the housing 4, and an operating handle 5 connected to the permanent magnet contactor.

As shown in fig. 11 and 12, the permanent magnet contactor includes a bobbin 1, a coil 11 wound around the bobbin 1, permanent magnets 12 provided in pairs on the bobbin 1, a magnetically conductive core 2 inserted into the bobbin 1 and movable relative to the bobbin 1, a push rod 21 connected to one end of the magnetically conductive core 2, a magnetically conductive armature plate 31, and a magnetically conductive yoke 32.

The magnetic conducting armature sheet 31 and the magnetic conducting yoke 32 are spliced to form a closed circle and then are coated on the outer side of the coil framework 1, the splicing direction of the magnetic conducting armature sheet 31 and the magnetic conducting yoke 32 is the same as the moving direction of the magnetic conducting iron core 2, two opposite openings 33 are formed after the magnetic conducting armature sheet 31 and the magnetic conducting yoke 32 are spliced, and a pin 13 connected with the leading-out end of the coil 11 extends out of the opening 33 instead of penetrating through the side wall of the magnetic conducting yoke 32.

Specifically, the magnetic conducting armature sheet 31 is a flat plate structure, and the magnetic conducting yoke 32 is a frame structure with a U-shaped cross section, so that the magnetic conducting armature sheet 31 and the magnetic conducting yoke 32 are spliced to form a frame structure with a cross section as a direction. Defining the direction shown in fig. 3 as a bottom view direction, the magnetic conducting armature plate 31 is vertically placed, and the magnetic conducting iron core 2 is transversely inserted into the coil framework 1, in this embodiment, the magnetic conducting iron core 2 is a flat strip-shaped plate-shaped structure, at least one pair of permanent magnets 12 is arranged on the front side and the rear side of the middle position of the coil framework 1, the pair of permanent magnets 12 are symmetrically arranged by taking the central axis of the magnetic conducting iron core 2 as a center, and a slot 14 for the permanent magnets 12 to be tightly inserted is formed on the coil framework 1.

In order to ensure the stability of the magnetic conducting armature plate 31 and the magnetic conducting yoke 32, a notch 311 is formed on each side of the magnetic conducting armature plate 31, a protrusion 321 is formed at the corresponding position of the magnetic conducting yoke 32 and can vertically extend into the notch 311, and the thickness of the protrusion 321 is equal to the depth of the notch 311.

In this embodiment, the cross section of the magnetic yoke 32 is U-shaped, so that the magnetic armature sheet 31 and the magnetic yoke 32 are spliced to form openings 33 on the upper and lower sides, respectively, two pins 13 connected to two ends of the coil extend out from the lower side of the same opening 33, respectively, and the connecting line of the two pins 13 is parallel to the moving direction of the magnetic core 2.

Of course, in other embodiments, two pins 13 may extend from above the upper opening, or one pin 13 may extend from the upper opening and the other pin 13 may extend from the lower opening.

In order to make the pins 13 extend from one side of the same opening, one of the pins has a bent part 131, the bent part 131 is L-shaped, the bent part 131 is parallel to the plane of the opening 33, one end of the bent part is vertically bent to form the pin 13, and the other end of the bent part is connected with the leading-out end of the coil in a winding manner.

The housing 4 is provided with a limiting cavity 41 for the permanent magnetic contactor to be clamped in, the size of the limiting cavity 41 is equivalent to that of the permanent magnetic contactor, the limiting cavity 41 is defined by four side walls, an opening 411 for the pin 13 to extend out is arranged at the edge of the bottom side wall of the limiting cavity 41, and as shown in fig. 2, the pin 13 extends out vertically from the bottom side wall.

The assembling direction of the limiting cavity 41 and the permanent magnet contactor can be changed as required, and the pins 13 can not only extend out from the bottom of the limiting cavity 41, but also extend out from the left side of the limiting cavity 41, or extend out from the right side of the limiting cavity 41, and also extend out from the top of the limiting cavity 41; of course, as shown in fig. 14 to 16, the stitch 13 is provided at the upper right of the coil bobbin 1, or at the lower right of the coil bobbin 1, or at the upper left of the coil bobbin 1, to increase the flexibility of assembly.

The working process is that when two pins 31 of the connecting coil 11 are electrified, the paired permanent magnets 12 realize the magnetization of the magnetic conducting armature sheet 31 and the magnetic conducting yoke 32, according to the principle that like poles repel each other and opposite poles attract each other, the magnetic conducting iron core 2 horizontally moves relative to the coil framework 1 under the action of the magnetic conducting armature sheet 31 and the magnetic conducting yoke 32, and the purpose of translational extension or retraction is realized by changing the current direction of the coil 11; because the magnetic yoke 32 is not provided with an opening for extending the pin 13, the magnetic circuit balance is high, and the action synchronism of the two contact ends connected with the push rod 21 is high in the process of extending or retracting the magnetic iron core 2.

As shown in fig. 4-13, the push rod 21 is connected to the operating handle 5, at least two fixed contacts 42 connected in series are disposed in the housing 4 on the upper and lower sides of the opening 411 of the limiting cavity 41 for the push rod 21 to extend out, and each fixed contact 42 includes a first fixed contact 421 connected to the output terminal 432 and a second fixed contact 422 connected to the input terminal 431, in this embodiment, the number of the fixed contacts 42 is two, that is, the first fixed contact 421 and the second fixed contact 422, and the spacing distance between the first fixed contact 421 and the second fixed contact 422 is 5-20mm, and the spacing distance is a vertical distance from the center of the first fixed contact 421 to the center of the second fixed contact 422; if a plurality of fixed contacts 42 are to be provided, the fixed contacts are further provided below the first fixed contact 421 and above the second fixed contact 422, while ensuring the distance therebetween.

The push rod 21 is provided with at least two movable contacts 211 which are arranged on the same conductive metal sheet 210, the positions of the movable contacts 211 and the fixed contacts 42 are corresponding, namely the movable contacts 211 are distributed on the upper side and the lower side of the push rod 21, in order to ensure the effective contact of the movable contacts 211 and the fixed contacts 42, the push rod 21 is connected with an elastic sheet 212, and the movable contacts 211 are abutted to the direction of the fixed contacts 42 by the elastic sheet 212. Specifically, the elastic piece 212 includes a body 213 vertically passing through the push rod 21, and an upper elastic piece 214 and a lower elastic piece 215 respectively extending to two sides of the body 213, the upper elastic piece 214 is further bifurcated into two elastic legs 216, and the two elastic legs 216 are respectively and symmetrically abutted against two sides of the movable contact 211.

When the magnetic conduction iron core 2 is translated, the at least two fixed contacts 42 and the at least two movable contacts 211 synchronously realize surface contact, that is, all the movable contacts 211 synchronously translate and contact the fixed contacts 42 as far as possible, and when the movable contacts 211 are contacted with the fixed contacts 42, an obvious sound prompt can be generated, so that an intuitive prompt effect is provided for a user.

In order to ensure the synchronous contact of all the movable contacts 211 and all the fixed contacts 42, as shown in fig. 5 and 6, a first projection 61 and a second projection 62 arranged in parallel with the first projection 61 are provided in the housing 4; the operating handle 5 comprises a connecting rod 51 and an operating part 52 which is convenient for applying external force, the connecting rod 51 is connected with the push rod 21 in a rotation stopping matching mode, a first groove body 63 which is used for the first convex part 61 to stretch into is arranged on the operating part 52, and a second groove body 64 which is used for the second convex part 62 to stretch into is arranged on the push rod 21.

The first convex part 61 and the second convex part 62 are both in a horizontal strip shape, the number of the first convex part 61 and the second convex part 62 is not limited, the extending direction is parallel to the translation direction of the magnetic conductive iron core 2, the projection of the first convex part 61 at least partially falls on the second convex part 62, namely, the projection of the first convex part 61 and the projection of the second convex part 62 in the vertical direction at least partially overlap, and the connection point of the connecting rod 51 and the push rod 21 and the second groove body 64 positioned on the back of the push rod 21 are arranged opposite to each other.

Of course, the positions of the first protrusion 61, the second protrusion 62, the first groove 63 and the second groove 64 may be interchanged, for example, the first groove and the second groove arranged in parallel to the first groove are arranged on the housing 4, the first protrusion capable of extending into the first groove is arranged on the operation portion 52, and the second protrusion capable of extending into the second groove is arranged on the push rod 21; or, a first groove body and a second convex part arranged in parallel with the first groove body are arranged on the shell 4, a first convex part capable of extending into the first groove body is arranged on the operation part 52, and a second groove body for extending the second convex part is arranged on the push rod 21; or, a first convex part and a second groove body parallel to the first convex part are arranged on the shell 4, a first groove body for the first convex part to extend into is arranged on the operation part 52, and a second convex part capable of extending into the second groove body is arranged on the push rod 21.

In order to realize the rotation-stop fit connection between the link 51 and the push lever 21, a square protrusion 217 is formed on the front surface of the push lever 21, and a square groove 511 into which the square protrusion 217 is inserted with tight fit is formed on the lower end portion of the link 51. Of course, the protrusions may be triangular or non-circular shaped structures as long as rigid connection and rotation-stop fit connection are achieved.

Therefore, the rigid connection between the connecting rod 51 and the pushing rod 21, the matching of the first protrusion 61 and the first groove 63, and the matching of the second protrusion 62 and the second groove 64, when the external force is applied to the toggle operation part 52, the pushing rod 21 can be driven to ensure horizontal movement, i.e. to do linear motion, so that the plurality of movable contacts 211 and the fixed contacts 42 simultaneously realize surface contact. In the case that the vertical distance between the center points of the first and second fixed contact points 421 and 422 is maintained at 5-20mm, preferably 11.3 mm; meanwhile, the contact distance between the first fixed contact 421 and the movable contact 211 matched with the first fixed contact reaches 1.2-3mm, the utility model discloses a withstand voltage value of relay can reach 1000-3000V, the arc extinguishing effect is good, the volume is smaller, as shown in fig. 9 and 10, the thickness is about 18mm, i.e. S is 18mm in fig. 10, the width of the part where the permanent magnet contactor is located is about 45mm, i.e. L is 45mm in fig. 9.

The above detailed description is provided for illustrative purposes, and is not intended to limit the present invention, and any modifications and variations of the present invention are within the spirit and scope of the following claims.

Claims (10)

1. The utility model provides a relay, includes casing (4), locates the permanent magnetic contactor in casing (4), and operating handle (5), permanent magnetic contactor includes coil skeleton (1), twines in coil (11) of coil skeleton (1), and permanent magnet (12), magnetic conductive core (2) that coil skeleton (1) relatively removed, catch bar (21) that link to each other with magnetic conductive core (2), magnetic conductive armature piece (31), and magnetic conductive yoke (32), its characterized in that: the push rod (21) is connected with the operating handle (5), at least two fixed contacts (42) are arranged in the shell (4) and comprise a first fixed contact (421) connected with the input end (431) and a second fixed contact (422) connected with the output end (432), at least two movable contacts (211) arranged on the same conductive metal sheet (210) are arranged on the push rod (21), and when the magnetic iron core (2) translates, the at least two fixed contacts (42) and the at least two movable contacts (211) realize surface contact.

2. The relay according to claim 1, characterized in that: the shell (4) is provided with a first convex part (61) and a second convex part (62) which is arranged in parallel with the first convex part (61), the operating handle (5) comprises a connecting rod (51) and an operating part (52) which is convenient for applying external force, the operating part (52) is provided with a first groove body (63) for the first convex part (61) to extend into, the push rod (21) is provided with a second groove body (64) for the second convex part (62) to extend into, and the connecting rod (51) is connected with the push rod (21) in a rotation stopping matching manner; or the shell (4) is provided with a first groove body and a second groove body which is parallel to the first groove body, the operating part is provided with a first convex part which can extend into the first groove body, and the push rod is provided with a second convex part which can extend into the second groove body; or the shell is provided with a first groove body and a second convex part arranged in parallel with the first groove body, the operating part is provided with a first convex part capable of extending into the first groove body, and the push rod is provided with a second groove body for the second convex part to extend into; or, the casing is equipped with first convex part and the second cell body with first convex part parallel arrangement, the operation portion is equipped with the first cell body that supplies first convex part to stretch into, the catch bar is equipped with the second convex part that can stretch into the second cell body.

3. The relay according to claim 2, characterized in that: the projection of the first convex part (61) at least partially falls on the second convex part (62); the connecting point of the connecting rod (51) and the push rod (21) is arranged opposite to the second groove body (64); the first convex part (61) and the second convex part (62) are in a transverse strip shape, and the extending direction of the first convex part and the second convex part is parallel to the translation direction of the magnetic conduction iron core (2).

4. The relay according to claim 2, characterized in that: the at least two fixed contacts (42) and the at least two movable contacts (211) synchronously realize surface contact; the push rod (21) forms a square protrusion (217), and the end part of the connecting rod (51) forms a square groove (511) for the square protrusion (217) to be inserted in a tight fit mode.

5. The relay according to claim 1, characterized in that: the movable contacts (211) are distributed on two sides of the push rod (21), the push rod (21) is connected with an elastic sheet (212), and the movable contacts (211) are abutted to the direction of the fixed contacts (42) by the elastic sheet (212).

6. The relay according to claim 1, characterized in that: be equipped with spacing cavity (41) that supply permanent magnet contactor card to go into in casing (4), this spacing cavity (41) have supply trompil (411) that catch bar (21) stretched out, decide contact (42) and be located the upper and lower both sides of trompil (411).

7. The relay according to claim 1, characterized in that: magnetic conduction armature piece (31) and magnetic conduction yoke (32) amalgamation form confined round, cladding in the outside of coil skeleton (1), the amalgamation direction of magnetic conduction armature piece (31) and magnetic conduction yoke (32) with the moving direction of magnetic conduction iron core (2) is the same, form two just right openings (33) after magnetic conduction armature piece (31) and magnetic conduction yoke (32) amalgamation, stitch (13) that link to each other with coil (11) stretch out from opening (33).

8. The relay according to claim 7, wherein: a limiting cavity (41) for the permanent magnet contactor to be clamped is arranged on the shell (4), and an opening (411) for the pin (13) to extend out is formed in the edge of the limiting cavity (41); the two pins (13) extend out of the lower part of the same opening (33), and the connecting line of the two pins (13) is parallel to the moving direction of the magnetic conductive iron core (2).

9. The relay according to claim 7, wherein: the magnetic conducting armature sheet (31) is of a flat plate structure, the magnetic conducting yoke (32) is of a frame-shaped structure with a U-shaped cross section, and the cross section of the magnetic conducting armature sheet (31) and the magnetic conducting yoke (32) is square after being spliced; notched grooves (311) are formed on two sides of the magnetic conducting armature sheet (31), and convex parts (321) which can vertically extend into the notched grooves (311) are formed at corresponding positions of the magnetic conducting yoke (32); the two pins (13) extend out of the lower part of the same opening (33), and the connecting line of the two pins (13) is parallel to the moving direction of the magnetic conductive iron core (2).

10. The relay according to claim 7, wherein: the permanent magnets (12) are arranged on the coil framework (1) in pairs and are arranged symmetrically by taking the magnetic conductive iron core (2) as a center.

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