CN111668070A

CN111668070A - High-power relay

Info

Publication number: CN111668070A
Application number: CN202010554018.1A
Authority: CN
Inventors: 杜欣洋
Original assignee: Sanyou Corp Ltd
Current assignee: Sanyou Corp Ltd
Priority date: 2020-06-17
Filing date: 2020-06-17
Publication date: 2020-09-15

Abstract

The invention relates to the technical field of relays, in particular to a high-power relay, which structurally comprises an insulating base, a magnetic circuit assembly, a normally open terminal assembly, a normally closed terminal assembly and a reed terminal assembly, wherein the magnetic circuit assembly, the normally open terminal assembly, the normally closed terminal assembly and the reed terminal assembly are arranged on the insulating base; the armature is rotatably arranged on the insulating base or the magnetic circuit component, two ends of the push card are used for respectively abutting against the armature and the reed terminal component, the magnetic circuit component is used for driving the armature to rotate, the rotated armature drives the reed terminal component to move through the push card, and the reed terminal component is used for conducting the normally open terminal component or the normally closed terminal component; the hook is used for applying reset force to the rotated armature, the normally open terminal assembly, the normally closed terminal assembly and the reed terminal assembly respectively comprise more than two terminal pieces, and the terminal pieces of the normally open terminal assembly, the normally closed terminal assembly and the reed terminal assembly are in one-to-one correspondence.

Description

High-power relay

Technical Field

The invention relates to the technical field of relays, in particular to a high-power relay.

Background

The relay is an automatic switch element with an isolation function, is used as an 'automatic switch' in a circuit, is one of essential basic elements in many electronic devices, is widely applied to the fields of communication, automobiles, automatic control, household appliances and the like, and is one of the most important control elements. The existing electromagnetic relay is generally a single-pole contact and cannot meet the requirement of high power. Moreover, the magnetic circuit component core and the yoke of the existing relay are unstable in structure and high in assembly difficulty.

Disclosure of Invention

Aiming at the technical problems in the prior art, the invention provides a high-power relay which can meet the high-power requirement and has a compact structure.

In order to achieve the purpose, the invention provides the following technical scheme.

The high-power relay comprises an insulating base, a magnetic circuit assembly and an output terminal assembly, wherein the magnetic circuit assembly and the output terminal assembly are arranged on the insulating base in a mutually separated mode;

the magnetic circuit assembly comprises an armature and a hook, the hook elastically limits the armature, the armature can rotate in the magnetic circuit assembly, a push card is connected between the armature and a reed terminal assembly, the magnetic circuit assembly is used for driving the armature to rotate, the rotated armature drives the reed terminal assembly to move through the push card so as to switch on a normally open terminal assembly and switch off the normally closed terminal assembly, the normally open terminal assembly, the normally closed terminal assembly and the reed terminal assembly all comprise more than two terminal pieces, and the terminal pieces of the normally open terminal assembly, the normally closed terminal assembly and the reed terminal assembly correspond to one another one by.

Preferably, magnetic circuit component includes iron core and coil, and the iron core is the U-shaped, and in the first stile of iron core inserted the coil, the second stile of iron core extended to the coil outside and towards the side bend form magnetism portion of inhaling, and magnetism portion of inhaling is equipped with the transition inclined plane of indent with linking part between the second stile.

Preferably, the insulating base is provided with a clamping groove and an accommodating groove, the bottom of the accommodating groove is abutted against the iron core, a first wedge-shaped bulge is arranged on the outer side of the iron core and clamped in the clamping groove, and therefore the iron core is clamped by the insulating base and the clamping groove together through the accommodating groove; the inboard of iron core is equipped with the boss, and the boss supports the tip of coil, and the inboard of iron core is equipped with the wedge of second arch, and the coil is equipped with the spacing groove, the protruding joint of second wedge in spacing groove to make the iron core pass through the protruding and the common chucking coil of boss of second wedge.

Preferably, the couple includes base member and shell fragment, and the base member is the range upon range of form of buckling and imbeds the chucking in magnetic circuit assembly, and shell fragment one end is fixed in the base member, and the other end downward sloping outwards extends and hangs, and armature is equipped with the wedge groove, and the shell fragment card is in the wedge groove to carry on spacingly to armature.

Preferably, a housing is buckled on the insulating base, the magnetic circuit assembly, the normally open terminal assembly, the normally closed terminal assembly, the reed terminal assembly and the push card are enclosed by the housing, an isolation plate is arranged on the inner side of the housing, a separation groove is formed in the insulating base, and the isolation plate is inserted into the separation groove, so that more than two terminal pieces of the normally open terminal assembly, the normally closed terminal assembly and the reed terminal assembly are separated.

Preferably, the housing is provided with a hollow protrusion, and the protrusion can form a spare air hole communicated with the inside of the housing by external cutting operation.

Preferably, the shell is provided with a ventilation structure, the ventilation structure comprises a first folding edge and a second folding edge which are formed in an injection molding mode, a ventilation gap with the width not larger than 0.2mm is reserved between the first folding edge and the second folding edge, and the first folding edge and the second folding edge are arranged in a staggered mode.

Preferably, the insulation base is provided with a plurality of mounting grooves, the groove walls of the mounting grooves are provided with limiting bulges, and the lower end parts of the normally open terminal component, the normally closed terminal component and the reed terminal component are abutted against the limiting bulges in the corresponding mounting grooves, so that the normally open terminal component, the normally closed terminal component and the reed terminal component are respectively inserted into different mounting grooves in an interference fit manner.

Preferably, the side portion of the reed terminal assembly is formed with an engagement hole through which the card is pushed, and a hole wall of the engagement hole is extended with a burring toward the normally-open terminal assembly.

Preferably, one end of the push card is provided with a hook part, the armature is provided with a limit groove, and the hook part is elastically embedded into the limit groove.

The invention has the beneficial effects that:

compared with the prior art, the high-power relay has the advantages that the normally open terminal assembly, the normally closed terminal assembly and the reed terminal assembly respectively comprise more than two terminal pieces, so that contacts are increased, and the use requirement of high power is met. In addition, the insulating base clamps the U-shaped iron core together through the accommodating groove and the clamping groove, and the iron core clamps the coil together through the second wedge-shaped protrusion and the boss, so that the installation structure of the iron core is compact and stable.

Drawings

Fig. 1 is a schematic structural diagram of a relay in the embodiment.

Fig. 2 is a schematic structural diagram of the relay in the embodiment after the housing is hidden.

Fig. 3 is an exploded view of the relay in an embodiment, with the housing hidden.

Fig. 4 is a cross-sectional view of the relay in the embodiment, with the housing hidden.

Fig. 5 is a schematic structural diagram of an iron core of the relay in the embodiment.

Fig. 6 is a sectional view of a housing of the relay in the embodiment.

Fig. 7 is an enlarged view at a in fig. 6.

Fig. 8 is a schematic structural diagram of an armature of the relay in the embodiment.

Fig. 9 is a schematic structural view of a hook of the relay in the embodiment.

Fig. 10 is another structural diagram of the push card in the embodiment.

The reference numerals include:

the air-permeable structure comprises a shell 1, a partition plate 11, a convex body 12, an air-permeable structure 13, a first folded edge 14 and a second folded edge 15;

the insulation base 2, a mounting groove 21, a limiting bulge 22, a clamping groove 23, a receiving groove 24, a separating groove 25 and a sliding rail 26;

the magnetic circuit component 3, the iron core 31, the magnetic part 311, the transition inclined plane 312, the first wedge-shaped protrusion 313, the second wedge-shaped protrusion 314, the boss 315, the coil 32 and the limit groove 321;

a normally open terminal assembly 4, a normally closed terminal assembly 5, a reed terminal assembly 6 and a flange 61;

the armature 7, the wedge-shaped groove 71 and the limit groove 72;

push the card 8, draw the hook 81, window 82, lug boss 83;

hook 9, base 91, shell fragment 92.

Detailed Description

The invention is described in detail below with reference to specific embodiments.

The relay of the present embodiment, as shown in fig. 1 to 9, includes an insulating base 2, and a magnetic circuit assembly 3, a normally open end assembly 4, a normally closed terminal assembly 5, and a reed terminal assembly 6 mounted to the insulating base 2, the reed terminal assembly 6 being located between the normally open end assembly 4 and the normally closed terminal assembly 5. The relay further comprises an armature 7, a pushing clamp 8 and a hook 9, the hook 9 applies inward elastic thrust to the lower end of the armature 7, the armature 7 is rotatably arranged on the magnetic circuit component 3, one end of the pushing clamp 8 is provided with two clamping hook parts 81, the clamping hook parts 81 have certain elasticity, the armature 7 is provided with a limiting groove 72, the armature 7 is inserted downwards during installation, the two clamping hook parts 81 are outwards unfolded, when the clamping hook parts 81 are aligned to the limiting groove 72, the clamping hook parts 81 are automatically embedded into the limiting groove 72, and the armature 7 is hooked by the pushing clamp 8. The other end of the push card 8 is provided with a step abutting against the reed terminal assembly 6. The magnetic circuit assembly 3 is used for driving the armature 7 to rotate by a small angle by taking the lower end of the armature as a rotating shaft, and the rotating armature 7 drives the reed terminal assembly 6 to move through the pushing card 8, so that the reed terminal assembly 6 conducts the normally-open terminal assembly 4 or the normally-closed terminal assembly 5. In use, after the magnetic circuit component 3 is electrified, attraction force is applied to the armature 7, the armature 7 rotates for a small time to push the push card 8 to move, and the push card 8 pushes the reed terminal component 6 and the normally open terminal component 4 to be closed mutually. After the magnetic circuit component 3 loses power, the reed terminal component 6 drives the push card 8 to reset by means of self elasticity, and the armature 7 swings and resets in a small range by taking the lower end part of the armature as a rotating shaft.

In this embodiment, the normally-open terminal assembly 4, the normally-closed terminal assembly 5, and the reed terminal assembly 6 each include two terminal pieces arranged in parallel, and the terminal pieces of the three are in one-to-one correspondence. The insulation base 2 is provided with a plurality of mounting grooves 21, the groove walls of the mounting grooves 21 are provided with limiting bulges 22, the lower end parts of the normally open terminal assembly 4, the normally closed terminal assembly 5 and the reed terminal assembly 6 are respectively inserted into different mounting grooves 21 and abut against the limiting bulges 22 in the corresponding mounting grooves 21, so that the normally open terminal assembly, the normally closed terminal assembly and the reed terminal assembly are mounted in the corresponding mounting grooves 21 in an interference fit manner. Each terminal piece of the reed terminal component 6 is divided into an upper part and a lower part, the lower parts of the two terminal pieces are integrally punched and formed during manufacturing, and the lower parts are installed with the corresponding upper parts after being cut and separated. The side part of the reed terminal component 6 is provided with an engagement hole for the push card 8 to pass through, and the hole wall of the engagement hole extends towards the normally-open end component 4 to form a flange 61, so that paper scraping caused by relative sliding can be reduced.

In this embodiment, the magnetic circuit component 3 includes the iron core 31 and the coil 32, the iron core 31 is U-shaped, the U-shaped iron core 31 includes the first vertical edge and the second vertical edge that are parallel to each other, the first vertical edge of the iron core 31 is inserted into the coil 32, the second vertical edge of the iron core 31 extends outside the coil 32, and the magnetic attraction part 311 is formed by bending towards the side, the thickness of the magnetic attraction part 311 is smaller than that of the two vertical edges, the connection part between the magnetic attraction part 311 and the second vertical edge is provided with the concave transition inclined plane 312, and when the transition inclined plane 312 can avoid the magnetic attraction part 311 to bend, the bending part arches outwards. The protruding part 83 between the two hook parts 81 of the push card 8 is used to limit the displacement of the push card 8 by the magnetic attraction part 311 of the iron core 31. The specific structure of the push card 8 can be changed into the structure shown in fig. 10, and the push card is filled into a plate-type structure, so that the strength is higher and more stable.

In this embodiment, the hook 9 includes a base 91 and an elastic sheet 92, the base 91 is bent and stacked and embedded in the magnetic circuit assembly 3, and the stacked structure can increase the strength and is easy to assemble. One end of the elastic sheet 92 is fixed on the base 91, the other end of the elastic sheet is outwards inclined downwards to extend and hang, the armature 7 is provided with a wedge-shaped groove 71, and the elastic sheet 92 is clamped in the wedge-shaped groove 71 to apply downward limiting force to the armature 7.

In this embodiment, the insulating base 2 is provided with the slot 23 and the accommodating groove 24, the bottom of the accommodating groove 24 abuts against the iron core 31, the outer side of the iron core 31 is provided with the first wedge-shaped protrusion 313, and the first wedge-shaped protrusion 313 is clamped in the slot 23, so that the insulating base 2 and the slot 23 clamp the iron core 31 together through the accommodating groove 24; the inboard of iron core 31 is equipped with boss 315, and boss 315 supports the tip of coil 32, and the inboard of iron core 31 is equipped with second wedge arch 314, and coil 32 is equipped with spacing groove 321, and second wedge arch 314 joint in spacing groove 321 to make iron core 31 through the common chucking coil 32 of second wedge arch 314 and boss 315. During the assembly, earlier the magnetic circuit subassembly 3, armature 7 and couple 9 assembly back, then whole horizontal slide rail 26 along insulating base 2 imbeds holding tank 24, first wedge-shaped protruding 313 can block in draw-in groove 23, and the protruding 314 joint of second wedge-shaped is in spacing groove 321, accomplishes the equipment of main part, and the equipment is convenient, and compact structure is stable. The push card 8 shown in fig. 2 is formed of a strip-shaped plate, and it is easy to observe whether the first wedge-shaped projection 313 is mounted in place, while the push card 8 shown in fig. 10 retains a window 82 through which the first wedge-shaped projection 313 can be observed.

In this embodiment, the insulating base 2 is buckled with the housing 1, the housing 1 encloses the magnetic circuit assembly 3, the normally open terminal assembly 4, the normally closed terminal assembly 5, the reed terminal assembly 6, the armature 7, the push card 8 and the hook 9, the inner side of the housing 1 is provided with the isolation plate 11, the insulating base 2 is formed with the separation groove 25, and the isolation plate 11 is inserted into the separation groove 25, so that the two terminal pieces of the normally open terminal assembly 4, the normally closed terminal assembly 5 and the reed terminal assembly 6 are separated, and the insulating performance is improved. The housing 1 is provided with a hollow protrusion 12, which protrusion 12 is closed at the time of shipment. When increasing ventilative volume when using, then cut off convex body 12 through external cutting operation, convex body 12 can form the inside reserve gas pocket of intercommunication shell 1 promptly, and application scope is wider, satisfies the user demand of different environment. The existing relay is generally provided with air holes, so that the air holes are small to prevent small animals such as insects from entering the relay. The prior art forms the bleeder vent through the mode of cutting, because the bleeder vent of little aperture corresponds the very little tool bit of needs diameter, the tool bit is easy disconnected during the cutting, consequently is difficult to accomplish the bleeder vent of little aperture in the actual manufacturing, and this embodiment is through following realization: the shell 1 is opened there is ventilative structure 13, and ventilative structure 13 is including injection moulding's first hem 14 and second hem 15, leaves ventilative gap between first hem 14 and the second hem 15, and the width in ventilative gap is not more than 0.2mm, preferred 0.15mm, and first hem 14 and second hem 15 are arranged at high stagger, the drawing of patterns of being convenient for.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A high-power relay is characterized in that:

the reed terminal assembly is positioned between the normally open terminal assembly and the normally closed terminal assembly;

2. A high power relay according to claim 1, wherein: magnetic circuit component includes iron core and coil, and the iron core is the U-shaped, and in the first stile of iron core inserted the coil, the second stile of iron core extended to the coil outside and bend towards side and form magnetism portion of inhaling, and magnetism portion of inhaling is equipped with the transition inclined plane of indent with linking part between the second stile.

3. A high power relay according to claim 2, wherein: the insulating base is provided with a clamping groove and an accommodating groove, the bottom of the accommodating groove is abutted against the iron core, a first wedge-shaped bulge is arranged on the outer side of the iron core and clamped in the clamping groove, and therefore the iron core is clamped by the insulating base and the clamping groove together through the accommodating groove; the inboard of iron core is equipped with the boss, and the boss supports the tip of coil, and the inboard of iron core is equipped with the wedge of second arch, and the coil is equipped with the spacing groove, the protruding joint of second wedge in spacing groove to make the iron core pass through the protruding and the common chucking coil of boss of second wedge.

4. A high power relay according to claim 1, wherein: the couple includes base member and shell fragment, and the base member is the range upon range of form of buckling and imbeds the chucking in magnetic circuit assembly, and shell fragment one end is fixed in the base member, and the other end downward sloping outwards extends and hangs, and armature is equipped with the wedge groove, and the shell fragment card is in the wedge groove to carry on spacingly to armature.

5. A high power relay according to claim 1, wherein: the insulation base is buckled with a shell, the shell encloses the magnetic circuit assembly, the normally open terminal assembly, the normally closed terminal assembly, the reed terminal assembly and the pushing clamp, the inner side of the shell is provided with a separation plate, a separation groove is formed in the insulation base, and the separation plate is inserted into the separation groove, so that more than two terminal pieces of the normally open terminal assembly, the normally closed terminal assembly and the reed terminal assembly are separated.

6. A high power relay according to claim 5, wherein: the shell is provided with a hollow convex body, and the convex body can form a standby air hole communicated with the inside of the shell under the action of external cutting operation.

7. A high power relay according to claim 5, wherein: the shell is opened there is ventilative structure, and ventilative structure includes injection moulding's first hem and second hem, leaves the ventilative gap that the width is not more than 0.2mm between first hem and the second hem, and first hem and second hem arrange at high stagger.

8. A high power relay according to claim 1, wherein: the insulation base is provided with a plurality of mounting grooves, the groove walls of the mounting grooves are provided with limiting bulges, and the lower end parts of the normally open terminal component, the normally closed terminal component and the reed terminal component are propped against the limiting bulges in the corresponding mounting grooves, so that the normally open terminal component, the normally closed terminal component and the reed terminal component are respectively inserted into different mounting grooves in an interference fit manner.

9. A high power relay according to claim 1, wherein: the side part of the reed terminal component is provided with an engagement hole for the pushing card to pass through, and the hole wall of the engagement hole extends towards the normally-open terminal component to form a flanging.

10. A high power relay according to claim 1 or 9, wherein: one end of the push card is provided with a hook part, the armature is provided with a limit groove, and the hook part is elastically embedded into the limit groove.