CN212380367U - Multi-contact high-power relay - Google Patents

Abstract

The utility model provides a high-power relay of multiunit contact belongs to relay technical field. The multi-contact high-power relay comprises a multi-contact relay main body and a heat dissipation type shell assembly. The heat dissipation type shell assembly comprises a bottom shell, an upper cover and a heat dissipation piece, the heat dissipation piece comprises a V-shaped metal radiating fin, a silica gel pad, a refrigeration piece, a heat dissipation cover and a heat dissipation fan, mounting grooves are formed in the bottom shell in pairs, the V-shaped metal radiating fin is connected to corresponding mounting groove inner walls, the silica gel pad is adhered to the outer wall of the V-shaped metal radiating fin, the heat absorption surface of the refrigeration piece is adhered to the inner wall of the V-shaped metal radiating fin, the heat dissipation cover is connected to the side wall of the multi-contact relay body, the heat dissipation fan is mounted on the bottom. The utility model discloses in, heat dissipation formula casing subassembly can have corresponding carries out the heat absorption heat dissipation by force to movable contact and stationary contact point contact position, and the radiating effect is better, reduces the probability of movable contact and stationary contact melting adhesion.

Description

Multi-contact high-power relay

Technical Field

The utility model relates to a relay field particularly, relates to a high-power relay of multiunit contact.

Background

The high-power relay with multiple contact points is an electric control device, mainly composed of an electromagnet, a tension spring, an armature, a movable reed, a movable contact point and a fixed contact point, when the electromagnet is electrified, the armature moves downwards and the movable reed and the movable contact point are contacted, so that the relay is electrified for a working circuit. When the movable contact and the fixed contact of the multi-contact high-power relay are contacted for a long time, the fixed contact is easy to deform and damage due to high temperature, and therefore the relay is damaged.

The existing relay adopts two heat dissipation structures, one is that a heat dissipation fan is directly installed on the inner wall of the relay, and heat dissipation holes are formed in the side wall of the relay, so that dust is easily adsorbed on the surfaces of a movable contact and a fixed contact, and the contact part cannot be well attached and electrified; the other type is that the metal radiating fins are arranged on the outer wall of the relay, so that the radiating efficiency is low, and the conventional relay is lack of a structure which can not influence the stable contact of the movable contact and the fixed contact and is convenient for quickly radiating the movable contact and the fixed contact in a pointed manner.

SUMMERY OF THE UTILITY MODEL

In order to compensate the above deficiency, the utility model provides a big power relay of multiunit contact aims at improving the problem that the movable contact and the stationary contact position radiating effect of present relay are not good.

The utility model discloses a realize like this:

the utility model provides a high-power relay of multiunit contact, including multicontact relay main part and heat dissipation formula casing assembly.

The heat dissipation type shell component comprises a bottom shell, an upper cover and a heat dissipation piece, wherein the upper cover is arranged on the upper portion of the bottom shell, a connection piece is further arranged between the upper cover and the bottom shell and comprises a metal elastic piece, a rubber clamping block and a butt joint groove, the metal elastic piece is connected to the inner wall of the upper cover, the rubber clamping block is connected to the outer end portion of the metal elastic piece, the butt joint groove is formed in the side wall of the bottom shell and is fixedly connected with the rubber clamping block in a buckling mode, the heat dissipation piece comprises a V-shaped metal cooling fin, a silica gel pad, a refrigeration piece, a heat dissipation cover and a heat dissipation fan, mounting grooves are formed in the bottom shell in pairs, the V-shaped metal cooling fin, the silica gel pad and the refrigeration piece are arranged in two numbers, the two V-shaped metal cooling fins are connected to the inner, the two refrigeration piece heat absorption surfaces are attached to the inner wall of the V-shaped metal radiating fin, the radiating cover is connected to the side wall of the multi-contact relay main body, the radiating fan is installed on the bottom side inside the radiating cover, and the upper portion of the radiating cover is communicated with a hot air discharge port.

In an embodiment of the present invention, the stepped groove is formed on the upper portion of the bottom casing, and the peripheral side of the bottom of the upper cover is adhered with the sealing rubber pad tightly attached to the bottom of the stepped groove.

The utility model discloses an in one embodiment, metal flexure strip and rubber fixture block and butt joint groove all set up to four, four the metal flexure strip divides into two sets ofly, and is two sets of the metal flexure strip is connected to upper cover inner wall both sides.

The utility model discloses an in an embodiment, the inside battery body, two of installing in pairs of heat exchanger that dispels the heat the positive negative pole wire of refrigeration piece is connected to respectively corresponding battery body positive negative pole terminal department.

The utility model discloses an in one embodiment, the multi-contact relay main part includes stationary reed and stationary contact, the stationary reed sets up to two, two the stationary reed all is connected to the drain pan inner wall, two the stationary reed bottom respectively with correspond surface contact is gone up to the silica gel.

In an embodiment of the present invention, the number of the static contacts is two, and two of the static contacts are respectively connected to the corresponding static reed.

In an embodiment of the present invention, the multi-contact relay main body includes a support rod, a tension spring, an armature, and an electromagnet, and the support rod is connected to the bottom in the bottom case.

In an embodiment of the present invention, the armature is hinged to the supporting rod, and two ends of the tension spring are respectively connected to the bottom of the armature and the bottom of the bottom casing.

In an embodiment of the present invention, the armature outer end is connected to a movable spring, and both sides of the movable spring outer end are connected to movable contacts.

In an embodiment of the present invention, the electromagnet is installed at the bottom in the bottom case, and the electromagnet is in electrical contact with the armature.

The utility model has the advantages that: the utility model discloses a high-power relay of multiunit contact that above-mentioned design obtained, during the use, utilize the silica gel pad with two stationary contacts contact to absorb and lead to V-arrangement metal fin with the heat that stationary contact and the long-time contact of movable contact produced, the endothermic one side of refrigeration piece is pasted at V-arrangement metal fin inner wall, utilize the setting of refrigeration piece can be with V-arrangement metal fin absorbed heat emission to the cooling jacket in, utilize radiator fan can blow off the cooling jacket with hot-air from the steam discharge port fast simultaneously in, it need not open the louvre on the drain pan and dispel the heat by force to set up like this, the heat dissipation pertinence, and it is higher for connecting the radiating efficiency of metal on the drain pan.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a multi-contact high-power relay according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a heat sink according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a connection relationship between the connecting member and the upper cover and the bottom case according to an embodiment of the present invention;

fig. 4 is a schematic view of a main structure of a multi-contact relay according to an embodiment of the present invention.

In the figure: 10-a multi-contact relay body; 110-stationary reed; 120-stationary contact; 130-strut; 140-tension spring; 150-an armature; 160-an electromagnet; 170-movable reed; 180-moving contact; 20-a heat dissipating housing assembly; 210-a bottom shell; 220-upper cover; 230-a heat sink; 231-V-shaped metal fins; 232-silica gel pad; 233-refrigerating plate; 234-heat dissipation cover; 235-a heat dissipation fan; 236-hot gas vent; 237-a battery body; 240-a splice member; 241-metal elastic sheet; 242-rubber clips; 243-docking slot; 250-step groove; 260-sealing rubber gasket; 270-mounting groove.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are 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 work belong to the protection scope of the present invention.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", 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 to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Examples

Referring to fig. 1, the present invention provides a multi-contact high-power relay, which includes a multi-contact relay main body 10 and a heat dissipation type housing assembly 20.

The multi-contact relay main body 10 is a mature technology in the prior art, and the electromagnet 160 is electrified by an external low-voltage power supply to be adsorbed on the armature 150, so that the movable contact 180 is contacted with the corresponding fixed contact 120, and further, the multi-contact relay main body is electrified for use by a working circuit; the heat dissipation type shell assembly 20 can perform forced heat absorption and dissipation on the contact part of the movable contact 180 and the fixed contact 120 in a targeted manner, the heat dissipation effect is good, and the probability of fusion and adhesion of the movable contact 180 and the fixed contact 120 is reduced.

Referring to fig. 1 to 3, the heat dissipating housing assembly 20 includes a bottom housing 210, an upper cover 220 and a heat dissipating member 230, the upper cover 220 is disposed on the top of the bottom housing 210, a connecting member 240 is further disposed between the upper cover 220 and the bottom housing 210, the connecting member 240 includes a metal elastic sheet 241, a rubber latch 242 and an opposing slot 243, the metal elastic sheet 241 is connected to an inner wall of the upper cover 220, the rubber latch 242 is connected to an outer end of the metal elastic sheet 241, the rubber latch 242 is fixed to an outer end of the corresponding metal elastic sheet 241 by a strong adhesive, the opposing slot 243 is formed in a side wall of the bottom housing 210 and is fastened to the rubber latch 242, and the rubber latch 242 is attached to an inner wall of the opposing slot 243 to reduce the possibility of dust adhering to the surfaces.

When specifically setting up, stepped groove 250 has been seted up on bottom shell 210 upper portion, the sealing rubber pad 260 that the bottom clings to mutually with the bottom in stepped groove 250 is glued inherently to upper cover 220 bottom week side, the cooperation that utilizes sealing rubber pad 260 and stepped groove 250 can increase bottom shell 210 and the tightness that upper cover 220 is connected, reduce the probability that the dust attaches on movable contact 180 and stationary contact 120 surface, metal flexure 241 and rubber fixture block 242 and butt joint groove 243 all set up to four, four metal flexure 241 divide into two sets ofly, two sets of metal flexure 241 are connected to upper cover 220 inner wall both sides, metal flexure 241 passes through screw or bolt fastening with upper cover 220.

The heat dissipating member 230 includes V-shaped metal heat dissipating fins 231, silica gel pads 232, cooling fins 233, a heat dissipating cover 234 and a heat dissipating fan 235, the bottom case 210 is provided with two mounting grooves 270 in pairs, the two V-shaped metal heat dissipating fins 231, the silica gel pads 232 and the cooling fins 233 are arranged in two, the two V-shaped metal heat dissipating fins 231 are connected to the inner walls of the corresponding mounting grooves 270, the V-shaped metal heat dissipating fins 231 and the inner walls of the mounting grooves 270 are integrally formed, the two silica gel pads 232 are adhered to the outer walls of the V-shaped metal heat dissipating fins 231, the heat absorbing surface of the cooling fins 233 is adhered to the inner walls of the V-shaped metal heat dissipating fins 231, the heat dissipating surface of the cooling fins 233 faces the inside of the heat dissipating cover 234, the heat dissipating cover 234 is connected to the side wall of the multi-contact relay main body 10, the heat dissipating cover 234 is, the bottom of the heat dissipation cover 234 is provided with a vent hole at the rear side of the heat dissipation fan 235, and the upper part of the heat dissipation cover 234 is communicated with a hot air discharge port 236.

When the cooling device is specifically arranged, the storage battery bodies 237 are installed in the cooling cover 234 in pairs, the positive and negative leads of the two cooling plates 233 are respectively connected to the positive and negative terminals of the corresponding storage battery bodies 237, and the storage battery bodies 237 can provide power for the cooling plates 233.

Referring to fig. 4, the multi-contact relay main body 10 includes two stationary springs 110 and two stationary contacts 120, the two stationary springs 110 are both connected to the inner wall of the bottom case 210, the bottoms of the two stationary springs 110 are respectively in contact with the upper surfaces of the corresponding silicone pads 232, so as to absorb heat generated by the stationary contacts 120 and the movable contacts 180, the two stationary contacts 120 are respectively connected to the corresponding stationary springs 110, and the stationary contacts 120 are welded to the outer walls of the stationary springs 110.

The multi-contact relay main body 10 comprises a supporting rod 130, a tension spring 140, an armature 150 and an electromagnet 160, wherein the supporting rod 130 is connected to the inner bottom of the bottom case 210, the supporting rod 130 is fixed at the inner bottom of the bottom case 210 through a screw or a bolt, the armature 150 is hinged to the supporting rod 130, the armature 150 is rotatably connected with the top end of the supporting rod 130 through a pin shaft, two ends of the tension spring 140 are respectively connected with the bottom of the armature 150 and the inner bottom of the bottom case 210, the outer end of the armature 150 is connected with a movable spring 170, two sides of the outer end of the movable spring 170 are respectively connected with a movable contact 180.

When the electromagnet 160 is connected with a low-voltage power supply through a coil, the armature 150 is adsorbed by the electromagnet 160, so that the movable contact 180 at the bottom is contacted with the corresponding fixed contact 120 at the bottom for electrification, namely, an operating circuit controlled by the movable contact 180 and the fixed contact 120 at the bottom is electrified; when the electromagnet 160 is powered off, the armature 150 is separated from the iron core of the electromagnet 160, so that the upper movable contact 180 and the upper corresponding fixed contact 120 are in contact and powered on, i.e., the working circuit controlled by the upper movable contact 180 and the fixed contact 120 is powered on.

The working principle of the multi-contact high-power relay is as follows: when the multi-contact relay is used, the metal elastic pieces 241 on the two sides of the upper cover 220 are pressed inwards, the upper cover 220 moves towards the bottom case 210 until the rubber clamping blocks 242 at the outer ends of the metal elastic pieces 241 are buckled with the corresponding butting grooves 243, so that the assembly of the bottom case 210 and the upper cover 220 is completed quickly, namely the installation of the multi-contact relay main body 10 is completed, and only the rubber clamping blocks 242 are pushed towards the inner side of the bottom case 210 during the disassembly, so that the bottom case 210 and the upper cover 220 can be separated quickly, and the follow-up quick maintenance of the multi-contact relay main body 10 can be facilitated;

when the multi-contact relay main body 10 works, the silica gel pads 232 in contact with the two fixed contacts 120 are used for absorbing heat generated by long-time contact of the fixed contacts 120 and the movable contacts 180 and guiding the heat to the V-shaped metal radiating fins 231, the heat absorbing surface of the refrigerating fins 233 is attached to the inner wall of the V-shaped metal radiating fins 231, the heat absorbed by the V-shaped metal radiating fins 231 can be discharged into the radiating cover 234 by the aid of the refrigerating fins 233, meanwhile, hot air can be blown out of the radiating cover 234 from the hot air discharge port 236 quickly by the aid of the radiating fan 235, the bottom shell 210 does not need to be provided with radiating holes for forced radiating, and radiating pertinence and radiating effect are good.

It should be noted that the specific model specifications of the multi-contact relay main body 10, the cooling plate 233, the cooling fan 235 and the storage battery body 237 need to be determined by type selection according to the actual specification of the device, and the specific type selection calculation method adopts the prior art, so detailed description is omitted.

The power supply of the multi-contact relay main body 10 and the cooling plate 233 as well as the cooling fan 235 and the battery body 237 and the principle thereof will be apparent to those skilled in the art and will not be described in detail herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A multi-contact high-power relay is characterized by comprising

Multi-contact relay body (10):

the heat dissipation type shell assembly (20) comprises a bottom shell (210), an upper cover (220) and a heat dissipation member (230), wherein the upper cover (220) is arranged at the upper part of the bottom shell (210), a connecting piece (240) is arranged between the upper cover (220) and the bottom shell (210), the connecting piece (240) comprises a metal elastic sheet (241), a rubber clamping block (242) and a butt joint groove (243), the metal elastic sheet (241) is connected to the inner wall of the upper cover (220), the rubber clamping block (242) is connected to the outer end part of the metal elastic sheet (241), and the butt joint groove (243) is arranged on the side wall of the bottom shell (210) and is fixedly buckled with the rubber clamping block (242);

the heat dissipation member (230) comprises a V-shaped metal heat dissipation sheet (231), a silica gel pad (232), a refrigeration sheet (233), a heat dissipation cover (234) and a heat dissipation fan (235), mounting grooves (270) are formed in the bottom shell (210) in pairs, the number of the V-shaped metal radiating fins (231), the silicon rubber pads (232) and the number of the refrigerating fins (233) are two, the two V-shaped metal radiating fins (231) are connected to the inner walls of the corresponding mounting grooves (270), the two silicon rubber pads (232) are fixedly attached to the outer walls of the V-shaped metal radiating fins (231), the heat absorbing surfaces of the two refrigerating fins (233) are attached to the inner walls of the V-shaped metal radiating fins (231), the heat dissipation cover (234) is connected to a side wall of the multi-contact relay main body (10), the heat radiation fan (235) is arranged at the bottom side in the heat radiation cover (234), and the upper part of the heat radiation cover (234) is also communicated with a hot air discharge opening (236).

2. The multi-contact high-power relay as claimed in claim 1, wherein a stepped groove (250) is formed at the upper part of the bottom shell (210), and a sealing rubber gasket (260) closely attached to the bottom of the stepped groove (250) is adhered to the periphery of the bottom of the upper cover (220).

3. The multi-contact high-power relay according to claim 1, wherein the number of the metal elastic pieces (241), the rubber latch (242) and the abutting groove (243) is four, the four metal elastic pieces (241) are divided into two groups, and the two groups of metal elastic pieces (241) are connected to two sides of the inner wall of the upper cover (220).

4. The multi-contact high-power relay as claimed in claim 1, wherein the heat dissipation cover (234) is provided with battery bodies (237) in pairs, and positive and negative leads of the two cooling fins (233) are respectively connected to positive and negative terminals of the battery bodies (237).

5. The multi-contact high-power relay is characterized in that the multi-contact relay main body (10) comprises two static springs (110) and two static contacts (120), the two static springs (110) are connected to the inner wall of the bottom shell (210), and the bottoms of the two static springs (110) are respectively in contact with the upper surfaces of the corresponding silica gel pads (232).

6. The multi-contact high-power relay as claimed in claim 5, wherein the number of the static contacts (120) is two, and the two static contacts (120) are respectively connected to the corresponding static springs (110).

7. The multi-contact high-power relay is characterized in that the multi-contact relay main body (10) comprises a support rod (130), a tension spring (140), an armature (150) and an electromagnet (160), wherein the support rod (130) is connected to the inner bottom of the bottom shell (210).

8. The multi-contact high-power relay as claimed in claim 7, wherein the armature (150) is hinged to the support rod (130), and two ends of the tension spring (140) are respectively connected with the bottom of the armature (150) and the bottom inside the bottom shell (210).

9. The multi-contact high-power relay as claimed in claim 7, wherein a movable spring (170) is connected to the outer end of the armature (150), and movable contacts (180) are connected to both sides of the outer end of the movable spring (170).

10. The multi-contact high-power relay according to claim 7, wherein the electromagnet (160) is installed at the bottom in the bottom shell (210), and the electromagnet (160) is electrically contacted with the armature (150).

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