CN213150675U

CN213150675U - Relay assembly

Info

Publication number: CN213150675U
Application number: CN202022286599.3U
Authority: CN
Inventors: 陈永兵; 谭忠华; 刘金枪; 邱桂林
Original assignee: Zhangzhou Hongfa Electron Wave Music Co ltd
Current assignee: Zhangzhou Hongfa Electron Wave Music Co ltd
Priority date: 2020-10-14
Filing date: 2020-10-14
Publication date: 2021-05-07
Anticipated expiration: 2030-10-14

Abstract

The utility model discloses a relay assembly, including electromagnetic relay and PTC thermistor, PTC thermistor sets up in electromagnetic relay, and PTC thermistor's one end is connected with electromagnetic relay's movable spring part electricity, and PTC thermistor's the other end is connected with electromagnetic relay's quiet spring part electricity. The utility model discloses when making electromagnetic relay and PTC thermistor parallelly connected be applied to the PCB board, two need not separately the welding, and only need electromagnetic relay's pin-outs all can with the welding of PCB board to the reduction occupies the PCB board area, is favorable to whole control module's miniaturization.

Description

Relay assembly

Technical Field

The utility model relates to a relay field especially relates to a relay assembly.

Background

A circuit structure of a surge suppressor is commonly used in a switching power supply, and the circuit structure includes a PTC thermistor, a relay, and the like. When the power switch is switched on, the capacitor starts to generate larger impulse current when charging is started, the relay contact is in an off state, and the PTC thermistor limits the impulse current to a lower level. After the capacitor is charged, the contact of the electric appliance acts to short circuit the PTC thermistor and switch on the load. In some states, the relay may fail without shorting the PTC thermistor, at which time a load is applied to the PTC thermistor and the PTC thermistor heats up to a certain extent, and the PTC thermistor enters a high resistance state, thereby limiting the fault current to a lower level.

In an electronic circuit, the relay and the PTC thermistor are separately separated and welded on a PCB, so that a large area of the PCB is occupied, and the miniaturization of the whole control module is not facilitated.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the technical problem that prior art exists, provide a relay assembly, it is in the same place electromagnetic relay and PTC thermistor combination, avoids the two separately welding on the PCB board.

The utility model provides a technical scheme that its technical problem adopted is: a relay assembly comprises an electromagnetic relay and a PTC thermistor, wherein the PTC thermistor is arranged on the electromagnetic relay, one end of the PTC thermistor is electrically connected with a movable spring part of the electromagnetic relay, and the other end of the PTC thermistor is electrically connected with a static spring part of the electromagnetic relay.

Furthermore, the PTC thermistor is located on the top surface of the housing of the electromagnetic relay, and one end of the PTC thermistor is electrically connected to the movable spring portion through a first conductive member, and the other end of the PTC thermistor is electrically connected to the stationary spring portion through a second conductive member.

Furthermore, the first conducting piece is a first lead, the second conducting piece is a second lead, and the first lead and the second lead respectively penetrate through a yielding through hole formed in the shell of the electromagnetic relay.

Furthermore, one end of the first lead wire positioned in the shell is welded to the movable spring plate of the movable spring part, and one end of the second lead wire positioned in the shell is welded to the static spring plate of the static spring part.

Further, one end of the first lead wire, which is located outside the housing, is welded to one end of the PTC thermistor, and one end of the second lead wire, which is located outside the housing, is welded to the other end of the PTC thermistor.

Furthermore, the PTC thermistor is located in the length direction of the top surface of the shell, a plurality of limiting blocks are arranged on the top surface of the shell, and the PTC thermistor is limited among the limiting blocks.

Further, the PTC thermistor also comprises a cover, wherein the cover is connected with the shell and covers the PTC thermistor.

Further, the housing is connected with the shell in a buckling mode.

Furthermore, the top surface of the shell is provided with a plurality of buckles, the bottom of the side wall of the housing is provided with a plurality of clamping holes, and the buckles are buckled with the clamping holes one by one.

Furthermore, the plurality of buckles are distributed at two ends of the width direction of the top surface of the shell, and guide blocks are respectively arranged at two ends of the top surface of the shell in the length direction and used for guiding when the shell is connected with the shell.

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

1. because PTC thermistor sets up in electromagnetic relay, and PTC thermistor's one end is connected with electromagnetic relay's movable spring part electricity, and PTC thermistor's the other end is connected with electromagnetic relay's quiet spring part electricity for when electromagnetic relay and PTC thermistor parallelly connected be applied to the PCB board, two need not separately the welding, and only need with each pin of electromagnetic relay with the welding of PCB board can, thereby the reduction occupies the PCB board area, is favorable to realizing whole control module's miniaturization.

2. Preferably, the PTC thermistor is located on the top surface of the housing of the electromagnetic relay, so that the PTC thermistor and the electromagnetic relay are stacked in the height direction, thereby not only avoiding changing the original structure inside the electromagnetic relay, but also minimizing the occupied area of the whole relay combination on the PCB board.

3. The first conducting piece is a first lead, and the second conducting piece is a second lead, so that the PTC thermistor is more conveniently connected with a movable spring part and a static spring part of the electromagnetic relay, and the cost is lower.

4. The utility model discloses utilize a plurality of stoppers are spacing at the shell top surface with PTC thermistor, and fixed mode is simple, and is fixed firm.

5. The utility model discloses still include a housing, this housing with the shell is connected, will PTC thermistor covers, can not only play the guard action to PTC thermistor, still makes whole outward appearance succinct more, pleasing to the eye. Particularly, the housing is connected with the housing in a buckling manner, so that the housing is very convenient to assemble and disassemble without tools.

The present invention will be described in further detail with reference to the accompanying drawings and examples; however, the present invention is not limited to the embodiment.

Drawings

FIG. 1 is a schematic perspective view of the present invention before the housing is connected to the housing;

FIG. 2 is a right side view of the present invention before the housing is attached to the housing;

FIG. 3 is a front view of the present invention with the housing hidden;

FIG. 4 is a right side view of the present invention with the housing hidden;

fig. 5 is a schematic perspective view of the housing of the present invention after being connected to the housing.

Detailed Description

In an embodiment, please refer to fig. 1 to 5, the relay assembly of the present invention includes an electromagnetic relay 1 and a PTC thermistor 2, the PTC thermistor 2 is disposed in the electromagnetic relay 1, and one end of the PTC thermistor 2 is electrically connected to a movable spring portion of the electromagnetic relay 1, and the other end of the PTC thermistor 2 is electrically connected to a static spring portion of the electromagnetic relay 1. The movable spring part and the static spring part are respectively inserted in a base 13 of the electromagnetic relay 1, and a magnetic circuit part 12 of the electromagnetic relay 1 adopts a vertical magnetic circuit and is connected with the movable spring part through a pushing clamp 16.

In this embodiment, the PTC thermistor 2 is located on the top surface of the housing 11 of the electromagnetic relay 1, and one end of the PTC thermistor is electrically connected to the movable spring portion through a first conductive member, and the other end of the PTC thermistor is electrically connected to the stationary spring portion through a second conductive member. Specifically, the first conductive member is a first lead 3, the second conductive member is a second lead 4, and the first lead 3 and the second lead 4 respectively pass through a yielding through hole 111 formed in the housing 11 of the electromagnetic relay 1. The number of the yielding through holes 111 is two, and the yielding through holes correspond to the first lead 3 and the second lead 4 respectively, and at this time, the first lead 3 and the second lead 4 can be rigid bare copper wires respectively or flexible connecting wires with insulating layers. In other embodiments, the number of the yielding through holes is one, so that the first lead and the second lead can pass through the yielding through holes together, and at the moment, the first lead and the second lead are flexible connecting wires with insulating layers, so that the first lead and the second lead are prevented from being in contact short circuit.

In this embodiment, as shown in fig. 3, one end of the first lead wire 3 located in the case 11 is welded to the movable spring 14 of the movable spring portion, and one end of the second lead wire 4 located in the case 11 is welded to the stationary spring 15 of the stationary spring portion. The movable spring pieces 14 are flexible spring pieces, the number of the movable spring pieces is two, the two movable spring pieces 14 are overlapped together, one movable spring piece is close to the static spring piece 15 and has an arch structure, the other movable spring piece is a straight spring piece, and the bottom of one side of the other movable spring piece, back to the one movable spring piece, and one end, located in the shell 11, of the other movable spring piece is welded and fixed with the first lead 3. In other embodiments, the number of movable springs is one. The end of the second lead 4 in the housing 11 is specifically welded to the bottom of the side of the static spring 15 opposite to one of the movable springs.

In this embodiment, as shown in fig. 4, one end of the first lead wire 3 located outside the case 11 is welded to one end of the PTC thermistor 2, and one end of the second lead wire 4 located outside the case 11 is welded to the other end of the PTC thermistor 2.

In this embodiment, the PTC thermistor 2 is located on the top surface of the housing 11 in the length direction, the top surface of the housing 11 is provided with a plurality of limit blocks 112, and the PTC thermistor 2 is limited between the limit blocks 112. The number of the limiting blocks 112 is two, and the two limiting blocks 112 are distributed at intervals along the width direction of the top surface of the housing 11.

In this embodiment, the present invention further comprises a housing 5, wherein the housing 5 is connected to the housing 11, and the PTC thermistor 2 is covered by the housing. Specifically, the housing 5 is connected to the housing 11 by a snap: the top surface of the shell 11 is provided with a plurality of fasteners 113, the bottom of the side wall of the housing 5 is provided with a plurality of fastening holes 51, and the fasteners 113 are fastened with the fastening holes 51 one by one. The plurality of buckles 113 are distributed at two ends of the top surface of the shell 11 in the width direction, and the two ends of the top surface of the shell 11 in the length direction are respectively provided with a guide block 114 for guiding the shell 5 when being connected with the shell 11, so that the buckles 113 and the clamping holes 51 are prevented from being aligned. The number of the buckles 113 is specifically two, the two buckles 113 are respectively located at two ends of the top surface of the housing 11 in the width direction, the two limit blocks 112 are respectively located at the opposite inner sides of the two buckles 113, and the limit blocks 112 and the buckles 113 located at the same side are integrally connected.

The utility model discloses a relay assembly, it is in the same place electromagnetic relay 1 and PTC thermistor 2 combination, avoids the two separately to weld on the PCB board to the reduction occupies PCB board area, is favorable to realizing whole control module's miniaturization. Particularly, the PTC thermistor 2 and the electromagnetic relay 1 are overlapped in the height direction, so that the original structure in the electromagnetic relay 1 is not changed, and the occupied area of the whole relay combination on a PCB board is minimized.

The above embodiments are only used to further illustrate the relay assembly of the present invention, but the present invention is not limited to the embodiments, and any simple modification, equivalent change and modification of the above embodiments by the technical entity of the present invention all fall into the protection scope of the technical solution of the present invention.

Claims

1. A relay assembly, characterized by: the electromagnetic relay comprises an electromagnetic relay and a PTC thermistor, wherein the PTC thermistor is arranged on the electromagnetic relay, one end of the PTC thermistor is electrically connected with a movable spring part of the electromagnetic relay, and the other end of the PTC thermistor is electrically connected with a static spring part of the electromagnetic relay.

2. The relay assembly of claim 1, wherein: the PTC thermistor is positioned on the top surface of the shell of the electromagnetic relay, one end of the PTC thermistor is electrically connected with the movable spring part through a first conductive piece, and the other end of the PTC thermistor is electrically connected with the static spring part through a second conductive piece.

3. The relay assembly of claim 2, wherein: the first conducting piece is a first lead, the second conducting piece is a second lead, and the first lead and the second lead respectively penetrate through yielding through holes formed in a shell of the electromagnetic relay.

4. The relay assembly of claim 3, wherein: one end of the first lead wire, which is positioned in the shell, is welded on the movable spring plate of the movable spring part, and one end of the second lead wire, which is positioned in the shell, is welded on the static spring plate of the static spring part.

5. The relay assembly of claim 3, wherein: the first lead is positioned at one end outside the shell and welded at one end of the PTC thermistor, and the second lead is positioned at one end outside the shell and welded at the other end of the PTC thermistor.

6. The relay assembly of claim 2, wherein: the PTC thermistor is located in the length direction of the top surface of the shell, a plurality of limiting blocks are arranged on the top surface of the shell, and the PTC thermistor is limited among the limiting blocks.

7. The relay assembly of any of claims 2-6, wherein: the PTC thermistor also comprises a cover shell which is connected with the shell and covers the PTC thermistor.

8. The relay assembly of claim 7, wherein: the housing is connected with the shell in a buckling mode.

9. The relay assembly of claim 8, wherein: the top surface of the shell is provided with a plurality of buckles, the bottom of the side wall of the housing is provided with a plurality of clamping holes, and the buckles are buckled with the clamping holes one by one.

10. The relay assembly of claim 9, wherein: the plurality of buckles are distributed at two ends of the width direction of the top surface of the shell, and guide blocks are respectively arranged at two ends of the top surface of the shell in the length direction and used for guiding when the shell is connected with the shell.