CN217768223U - High-power relay with heat dissipation function - Google Patents

Abstract

The utility model discloses a high-power relay with heat dissipation function, including casing, contact branch and electro-magnet, the internally mounted of casing has the electro-magnet, the internally mounted of electro-magnet one end casing has the fin, the contact mounting panel is installed in the front of fin, contact branch is installed in the front of contact mounting panel, the second contact is installed in the front of contact branch one side contact mounting panel, the third contact is installed to one side of second contact, and the movable iron core through adopting the electro-magnet pushes up movable contact branch, makes second contact third contact in the first contact extrusion contact mounting panel, replaces original armature structure, and when high tension circuit opened, inside second contact third contact was located the contact mounting panel simultaneously, the electric arc heat that second contact third contact produced dispersed to the relay casing outside through the fin, and the heat that produces on the assurance movable contact can be fine gived off.

Description

High-power relay with heat dissipation function

Technical Field

The utility model relates to a relay technical field specifically is a high-power relay with heat dissipation function.

Background

The relay can be divided into an electromagnetic relay, a solid relay, a stable relay, a reed relay, a time relay, a high-frequency relay, an excitation relay and the like according to the working principle or characteristics, wherein the electromagnetic relay is a switch for controlling the on-off of a working circuit by utilizing an electromagnet, and the main components comprise the electromagnet, an armature, a spring, a movable contact and a static contact;

through retrieval application number 20202226 6023.0, the name is a high-power relay with heat dissipation function, and this application includes the shell, the bottom of shell is provided with heat dissipation formula mounting panel, heat dissipation formula mounting panel is made for aluminium system material, a plurality of louvres have been seted up on the heat dissipation formula mounting panel, the louvre distributes the upper surface of heat dissipation formula mounting panel and run through the setting of heat dissipation formula mounting panel, and this application has increased the louvre and has carried out the heat dissipation in step, has reduced the inside temperature of relay, but still has following problem to a certain extent:

the relay can not produce more heat when voltage and electric current access are normal in the normal use process, but when using the relay in high frequency switch circuit, frequent break-make of contact among the high tension line, the electric arc that the contact switching in-process formed can make the relay generate heat, the position that the relay heat production is the most is in the contact position, but the movable contact is located the relay inside not with the contact of relay casing, the heat that produces on the movable contact when adopting the heating panel heat dissipation is inside by the relay casing that gives out that can not be fine.

SUMMERY OF THE UTILITY MODEL

In order to achieve the above object, the utility model provides a following technical scheme: a high-power relay with a heat dissipation function comprises a shell, a contact supporting rod and an electromagnet, wherein the electromagnet is installed inside the shell, a heat dissipation fin is installed inside the shell at one end of the electromagnet, a contact mounting plate is installed on the front surface of the heat dissipation fin, the contact supporting rod is installed on the front surface of the contact mounting plate, and a second contact is installed on the front surface of the contact mounting plate at one side of the contact supporting rod;

the limiting ring is installed to the one end of the inside second contact of contact mounting panel, the one side that the second contact was kept away from to the limiting ring is connected with the spring, the inside cover of spring is equipped with the third contact, the plastic slab is installed to the one end that the second contact was kept away from to the third contact, the one side that the third contact was kept away from to the plastic slab is connected with the fin.

Preferably, the casing includes base, top cap, mount, wire casing and wiring row mounting groove, and the top cap is installed at the top of base, and the both sides of base all are equipped with the mount, and the wiring row mounting groove has been seted up to the bottom of base, and the wire casing has been seted up at the interior top of base.

Preferably, the internally mounted of wiring row mounting groove has the wiring row, and the bottom is installed to the bottom of wiring row, and the wiring mouth is installed to one side at wiring row one side casing top.

Preferably, the electro-magnet includes enameled wire, coil support, iron core and insulating cover, and the enameled wire is installed in the periphery winding of coil support, and coil support's inside cover is equipped with the iron core, and the iron core is close to the one end of contact mounting panel and installs insulating cover.

Preferably, the top of the contact supporting rod is provided with a rotating shaft sleeve, the bottom end of the contact supporting rod is provided with a first contact, and a rotating shaft is rotatably arranged in the rotating shaft sleeve.

Preferably, the telescopic one end of pivot is kept away from to the pivot is connected with the contact mounting panel, and the periphery cover of pivot is equipped with the torsional spring, and the both ends of torsional spring are connected with contact branch and contact mounting panel respectively.

The utility model has the advantages that:

the utility model discloses an electro-magnet, the contact mounting panel, contact branch and fin cooperation are used, adopt the moving iron core of electro-magnet to push up moving contact branch, make second contact third contact in the first contact extrusion contact mounting panel, replace original armature structure, when high tension circuit opened, second contact third contact is located inside the contact mounting panel simultaneously, the electric arc heat that second contact third contact produced is dispersed to the relay casing outside through the fin, guarantee that the heat that produces on the moving contact can be fine by giving off.

Drawings

FIG. 1 is a schematic side sectional view of the present invention;

fig. 2 is a schematic top view of the present invention;

fig. 3 is a schematic sectional top view of the present invention;

fig. 4 is an internal schematic view of the contact mounting plate of the present invention.

In the figure: 1. a housing; 101. a base; 102. a top cover; 103. a fixed mount; 104. a wire slot; 105. a wiring bar mounting groove; 2. a line bank; 201. a bottom cover; 202. a wiring port; 3. a contact mounting plate; 4. a contact strut; 401. a rotating shaft sleeve; 402. a first contact; 403. a rotating shaft; 5. an electromagnet; 501. enameled wires; 502. a coil support; 503. an iron core; 504. an insulating sleeve; 6. a second contact; 601. a limiting ring; 7. a plastic panel; 8. a heat sink; 9. a torsion spring; 10. a spring; 11. and a third contact.

Detailed Description

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1-4, the present invention provides an embodiment: a high-power relay with a heat dissipation function comprises a shell 1, a contact supporting rod 4 and an electromagnet 5, wherein the electromagnet 5 is installed inside the shell 1, a heat dissipation fin 8 is installed inside the shell 1 at one end of the electromagnet 5, a contact mounting plate 3 is installed on the front surface of the heat dissipation fin 8, the contact supporting rod 4 is installed on the front surface of the contact mounting plate 3, and a second contact 6 is installed on the front surface of the contact mounting plate 3 on one side of the contact supporting rod 4;

the spacing ring 601 is installed to the inside one end of second contact 6 of contact mounting panel 3, and the one side that second contact 6 was kept away from to spacing ring 601 is connected with spring 10, and the inside cover of spring 10 is equipped with third contact 11, and the plastic slab 7 is installed to the one end that second contact 6 was kept away from to third contact 11, and the one side that third contact 11 was kept away from to plastic slab 7 is connected with fin 8.

Specifically, when the electromagnet 5 is switched on and off, the output end pushes the contact supporting rod 4 forwards, the contact supporting rod 4 rotates along the front face of the contact mounting plate 3, the first contact 402 at the lower end of the contact mounting plate 3 moves along with the contact mounting plate 3, the first contact 402 moves to be extruded to the second contact 6, and the second contact 6 moves towards the inside of the contact mounting plate 3 and is in contact with the third contact 11 after being extruded;

in the closing process of the high-voltage line, the first contact 402 moves to press the second contact 6, the second contact 6 is not connected to the high-voltage line, so that electric arcs cannot be generated, the second contact 6 and the third contact 11 are contacted with each other or separated from each other, namely, more heat can be generated by the second contact 6 and the third contact 11 at the mounting plate 3, and the heat is conducted to the outside of the shell 1 through the plastic plate 7 and the radiating fins 8;

wherein plastic slab 7, scribble heat conduction silicone grease between fin 8 and the third contact 11, two trough have been seted up to the inside of mounting panel 3, high-voltage line positive and negative line passes the trough and connects first contact 402 and third contact 11 respectively, fin 8 is the crowded type fin of aluminium, plastic slab 7 can avoid fin 8 to concatenate and get into the circuit, spring 10 can separate second contact 6 and third contact 11 bullet when first contact 402 resets, spacing ring 601 adopts riveting mode and second contact 6 interconnect for the plastics material, first contact 402, second contact 6 and third contact 11 all are the copper post, and second contact 6 top possesses the circular arc structure, be used for guaranteeing that first contact 402 can be smooth and easy to push down second contact 6.

Further, the housing 1 includes a base 101, a top cover 102, a fixing frame 103, a wire slot 104 and a wiring bar installation slot 105, the top of the base 101 is provided with the top cover 102, both sides of the base 101 are provided with the fixing frame 103, the bottom of the base 101 is provided with the wiring bar installation slot 105, and the inner top of the base 101 is provided with the wire slot 104;

the inside of the wire connecting bank mounting groove 105 is provided with a wire connecting bank 2, the bottom cover 201 is arranged at the bottom end of the wire connecting bank 2, and a wire connecting port 202 is arranged at one side of the top of the shell 1 at one side of the wire connecting bank 2.

Specifically, base 101, top cap 102 and mount 103 are the plastics material, and the hot welding is connected between base 101 and the top cap 102, and terminal row mounting groove 105 provides the mounted position for terminal row 2, and electro-magnet 5, first contact 402 and third contact 11 pass through the wire and connect line connection 202 copper sheet that corresponds in the terminal row 2 and connect, then pass through line connection that line connection 202 and outside correspond, and bottom 201 can protect terminal row 2 bottom.

Further, the electromagnet 5 includes an enamel wire 501, a coil support 502, an iron core 503 and an insulating sleeve 504, the enamel wire 501 is wound around the outer periphery of the coil support 502, the iron core 503 is sleeved inside the coil support 502, and the insulating sleeve 504 is installed at one end of the iron core 503 close to the contact mounting plate 3.

Specifically, the electromagnet 5 is a frame-type electromagnet with an iron core 503 extending out when being powered on, the enameled wire 501 is wound outside the coil support 502 to form a coil structure, the enameled wire 501 generates a magnetic field after being powered on to enable the iron core 503 to generate axial linear motion, so that the functions of pushing and pulling an external load device are achieved, the insulating sleeve 504 is an insulating sleeve wrapped at one end of the iron core 503 close to the contact mounting plate 3, and the iron core 503 is prevented from being connected into a high-voltage circuit when being abutted against the contact supporting rod 4.

Further, a rotating shaft sleeve 401 is arranged at the top of the contact supporting rod 4, a first contact 402 is arranged at the bottom end of the contact supporting rod 4, and a rotating shaft 403 is rotatably arranged in the rotating shaft sleeve 401;

one end of the rotating shaft 403 far away from the rotating shaft sleeve 401 is connected with the contact mounting plate 3, a torsion spring 9 is sleeved on the periphery of the rotating shaft 403, and two ends of the torsion spring 9 are respectively connected with the contact supporting rod 4 and the contact mounting plate 3.

Specifically, the rotating shaft 403 and the contact mounting plate 3 are welded to each other, the rotating shaft 403 is sleeved inside the rotating shaft sleeve 401, the torsion spring 9 is in a reset state when the contact supporting rod 4 is in a vertically downward position, and when the iron core 503 of the electromagnet 5 pushes the contact supporting rod 4, the torsion spring 9 is in an elastic deformation state.

The working principle is as follows: the output can be to the preceding movable contact branch 4 of propping when electro-magnet 5 break-make, contact branch 4 can rotate along the front of contact mounting panel 3, the first contact 402 of the low side of contact mounting panel 3 can follow the motion of contact mounting panel 3, in the high-tension line closure process, first contact 402 moves extrusion second contact 6, second contact 6 does not insert high-tension line, second contact 6 and third contact 11 produce electric arc when contacting each other or separating, second contact 6 and third contact 11 contact can produce more heat at mounting panel 3 promptly, the heat conducts to the outside of casing 1 through plastic slab 7 and fin 8.

Claims (6)

1. The utility model provides a high-power relay with heat dissipation function, includes casing (1), contact branch (4) and electro-magnet (5), its characterized in that: an electromagnet (5) is installed inside the shell (1), a radiating fin (8) is installed inside the shell (1) at one end of the electromagnet (5), a contact mounting plate (3) is installed on the front face of the radiating fin (8), a contact supporting rod (4) is installed on the front face of the contact mounting plate (3), and a second contact (6) is installed on the front face of the contact mounting plate (3) on one side of the contact supporting rod (4);

spacing ring (601) are installed to the one end of contact mounting panel (3) inside second contact (6), one side that second contact (6) were kept away from in spacing ring (601) is connected with spring (10), the inside cover of spring (10) is equipped with third contact (11), the one end that second contact (6) were kept away from in third contact (11) is installed plastic slab (7), one side that third contact (11) were kept away from in plastic slab (7) is connected with fin (8).

2. The high-power relay with the heat dissipation function as claimed in claim 1, wherein: casing (1) includes base (101), top cap (102), mount (103), wire casing (104) and wiring row mounting groove (105), and top cap (102) are installed at the top of base (101), and the both sides of base (101) all are equipped with mount (103), and wiring row mounting groove (105) have been seted up to the bottom of base (101), and wire casing (104) have been seted up at the interior top of base (101).

3. The high-power relay with the heat dissipation function according to claim 2, wherein: the internally mounted of line bank mounting groove (105) has line bank (2), and bottom (201) are installed to the bottom of line bank (2), and one side at line bank (2) one side casing (1) top installs wiring mouth (202).

4. The high-power relay with the heat dissipation function according to claim 1, wherein: electromagnet (5) include enameled wire (501), coil bracket (502), iron core (503) and insulating cover (504), and enameled wire (501) are installed in the periphery winding of coil bracket (502), and the inside cover of coil bracket (502) is equipped with iron core (503), and iron core (503) are close to the one end of contact mounting panel (3) and install insulating cover (504).

5. The high-power relay with the heat dissipation function as claimed in claim 1, wherein: the top of contact branch (4) is equipped with pivot sleeve (401), and the bottom of contact branch (4) is equipped with first contact (402), and pivot sleeve (401) inside rotatory installation has pivot (403).

6. The high-power relay with the heat dissipation function according to claim 5, wherein: the one end that pivot sleeve (401) was kept away from in pivot (403) is connected with contact mounting panel (3), and the periphery cover of pivot (403) is equipped with torsional spring (9), and the both ends of torsional spring (9) are connected with contact branch (4) and contact mounting panel (3) respectively.

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