CN218513383U - All-in-one electromagnetic relay - Google Patents

Abstract

The utility model discloses an all-in-one electromagnetic relay, including the casing part with install in a plurality of relay main parts of this casing part, each relay main part includes magnetic circuit and contact system respectively, the contact system of a plurality of relay main parts is in proper order the series connection in the casing part forms series circuit, perhaps, a plurality of relay main parts distribute along the preset direction, and along the preset direction, the contact system of every two adjacent relay main parts is equipped with the public part, makes the contact system of a plurality of relay main parts form series circuit; the contact leading-out pins at the two ends of the series circuit are respectively exposed outside the shell part. The utility model is favorable for reducing the whole board occupation area on one hand, thereby being favorable for the miniaturization of the terminal product of the electromagnetic relay; on the other hand, the number of the contact leading-out pins welded with the PCB is reduced, so that the welding risk is reduced, the using amount of the contact leading-out pins is reduced, and the cost is reduced.

Description

All-in-one electromagnetic relay

Technical Field

The utility model relates to an electromagnetic relay especially relates to an all-in-one electromagnetic relay.

Background

According to the characteristics of the photovoltaic inverter application, in order to meet the safety regulation requirement of the whole machine, a scheme that two relays are connected in series for use is needed, and the two relays are independent coils for controlling respective contact groups. Of course, besides the photovoltaic inverter, the control of many other power sources also requires a solution in which two relays are connected in series. At present, when two relays which are independently installed respectively are used in series, contact leading-out pins of each relay need to be respectively welded on a PCB, and then a copper foil is adopted to conduct and connect one contact leading-out pin of each of the two relays which are used for realizing the series connection on the PCB.

However, the above-described manner of connecting two independently installed relays in series has the following disadvantages: the two relays are mutually independent, and the area of the occupied board on the PCB board is large, so that the miniaturization of a terminal product of the electromagnetic relay is not facilitated; in addition, because of the requirement of large current, the contact leading-out pins of the relay are wider and thicker, and the requirement on a welding process is higher; for the mode of connecting two relays in series, four contact leading-out pins need to be welded, and for the mode of connecting more than two relays in series, more contact leading-out pins need to be welded, so that the whole welding points are more, and the welding risk is relatively higher.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the technical problem that prior art exists, provide an all-in-one electromagnetic relay, it forms series structure with a plurality of relay main parts are integrated together in advance, reaches and reduces the purpose such as occupation of area and reduction contact pin-outs.

The utility model provides a technical scheme that its technical problem adopted is: an all-in-one electromagnetic relay comprises a shell part and a plurality of relay main bodies installed in the shell part, wherein each relay main body comprises a magnetic circuit system and a contact system, the contact systems of the relay main bodies are sequentially connected in series in the shell part to form a series circuit, or the relay main bodies are distributed along a preset direction, and the contact systems of every two adjacent relay main bodies are provided with a common part along the preset direction, so that the contact systems of the relay main bodies form a series circuit; the contact leading-out pins at the two ends of the series circuit are respectively exposed outside the shell part.

Furthermore, the contact system comprises a movable spring part and a static spring part, wherein the movable spring part is provided with a first movable contact and a second movable contact, the static spring part is provided with a first static contact, the public part is a static conducting strip which is provided with a second static contact and a third static contact, the first movable contact is correspondingly matched with the first static contact, and the second static contact and the third static contact are respectively correspondingly matched with the second movable contacts of the two adjacent movable spring parts.

Furthermore, the contact leading-out pin is a leading-out pin of the static spring part, and the movable spring part is relatively fixed with the armature of the magnetic circuit system to form a movable spring armature part.

Furthermore, the movable spring part comprises a movable spring piece and a movable conducting piece, one end of the movable spring piece is fixed with the armature, the other end of the movable spring piece is connected with the movable conducting piece, and the movable conducting piece is provided with the first movable contact and the second movable contact.

Further, the common portion is electrically connected with a detection lead-out pin exposed outside the housing portion.

Further, the shell body part comprises a base and a shell with an opening at the bottom end, the plurality of relay main bodies are respectively arranged on the base, and the bottom of the shell is connected with the base and contains the plurality of relay main bodies.

Furthermore, a heat dissipation structure is arranged at the position between every two adjacent relay main bodies in the shell.

Furthermore, the heat dissipation structure comprises a ventilation channel arranged in the shell, one end of the ventilation channel is communicated with the outside through a heat dissipation port arranged on the shell, the other end of the ventilation channel is hermetically communicated with a heat dissipation through groove arranged on the base, and the heat dissipation through groove is communicated with the outside.

Furthermore, the number of the heat dissipation ports is multiple, and the multiple heat dissipation ports are located on different wall bodies of the shell; the heat dissipation through groove avoids the contact systems of the two adjacent relay main bodies, and a separation wall is arranged between the contact systems of the two adjacent relay main bodies on the base.

Further, the number of the relay main bodies is two, and the two relay main bodies are arranged along the length direction of the housing part.

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

1. the utility model integrates the relay main bodies together in advance to form a series structure and shares the same shell part, thereby being beneficial to reducing the whole board occupation area on one hand and being beneficial to the miniaturization of the terminal product of the electromagnetic relay; on the other hand, the number of the contact leading-out pins welded with the PCB is reduced, so that the welding risk is reduced, the using amount of materials used for the contact leading-out pins is reduced, and the cost is reduced.

2. The common part is the static conductive sheet, so that the number of the integral contact leading-out pins is halved, and the material cost of the contact leading-out pins is reduced by 50 percent.

3. Public part electricity is connected with detects the pin, can be used for detecting the state of relay, and should detect and draw the foot and only detect the use for the signal, therefore should detect and draw the foot whole thinner, the welding degree of difficulty is low, and the welding risk is also low.

4. The position between every two adjacent relay main parts in the shell is provided with a heat radiation structure respectively, and the heat radiation capability of an electromagnetic relay product can be improved. Particularly, the heat dissipation structure comprises the ventilation channel, and is simple in structure and convenient to machine.

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 an exploded view of the present invention;

FIG. 2 is a schematic view of the movable conducting strip, the static conducting strip and the static reed of the present invention in a matching state;

FIG. 3 is a top view of FIG. 2;

FIG. 4 is a front view of FIG. 2;

fig. 5 is a schematic perspective view of the base and the two relay bodies in an assembled state according to the present invention;

FIG. 6 is a top view of FIG. 5;

fig. 7 is a first perspective view of the housing of the present invention;

fig. 8 is a schematic perspective view of the housing of the present invention;

fig. 9 is a first perspective view of the present invention;

fig. 10 is a schematic perspective view of the second embodiment of the present invention;

fig. 11 is a bottom view of the present invention;

fig. 12 is a top view of the present invention;

FIG. 13 isbase:Sub>A sectional view A-A of FIG. 12;

FIG. 14 is a cross-sectional view B-B of FIG. 12;

the detection device comprises a base 1, a base 11, a heat dissipation through groove 12, a separation wall 2, a shell 21, a ventilation channel 22, a heat dissipation opening 3, a magnetic circuit system 31, a coil frame 32, a coil 33, an iron core 34, a yoke 35, an armature 36, a reset reed 37, a coil leading-out pin 38, an insulating piece 4, a movable spring part 41, a movable reed 42, a movable conducting strip 43, a first movable contact 44, a second movable contact 5, a static reed 51, a first static contact 52, a contact leading-out pin 6, a static conducting strip 61, a second static contact 62, a third static contact 7 and a detection leading-out pin.

Detailed Description

The terms "first," "second," and the like in the present application are used solely to distinguish similar objects from one another, and are not necessarily used to describe a particular order or sequence, nor are they to be construed as indicating or implying relative importance. In the description, the directions or positional relationships indicated by "up", "down", "left", "right", "front", and "rear" are used as the directions or positional relationships indicated on the drawings, and are only for convenience of description of the present invention, and do not indicate or imply that the device referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the scope of the present invention. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate. In addition, in the description of the present application, "a plurality" means two or more unless otherwise specified.

Referring to fig. 1-14, an all-in-one electromagnetic relay of the present invention includes a housing and a plurality of relay bodies installed in the housing, each of the relay bodies includes a magnetic circuit 3 and a contact system, and therefore, each of the relay bodies has an individual coil and an individual contact, and the plurality of relay bodies share the same housing. The shell body part specifically comprises a base 1 and a shell 2 with an opening formed in the bottom end, and the plurality of relay main bodies are respectively installed on the base 1. The bottom end of the shell 2 is connected with the base 1 in a buckling connection mode and contains the relay main bodies. The relay bodies are distributed along a preset direction, and a common part is arranged on the contact system of each two adjacent relay bodies along the preset direction, so that the contact systems of the relay bodies form a series circuit; the contact leading-out pins 52 at the two ends of the series circuit are respectively exposed out of the shell part, and specifically, the contact leading-out pins 52 respectively penetrate downwards through the base 1. In other embodiments, the contact systems of the plurality of relay bodies are connected in series in sequence within the housing portion to form a series circuit, in which case a portion of the contact pin leads may be shorted or not, thereby eliminating the need for soldering to a PCB.

In this embodiment, the contact system includes a movable spring part 4 and a stationary spring part, the movable spring part 4 is provided with a first movable contact 43 and a second movable contact 44, the stationary spring part is provided with a first stationary contact 51, the common part is a stationary conductive sheet 6, the stationary conductive sheet 6 is mounted on the base 1, and is provided with a second stationary contact 61 and a third stationary contact 62, the first movable contact 43 is correspondingly matched with the first stationary contact 51, and the second stationary contact 61 and the third stationary contact 62 are respectively correspondingly matched with the second movable contacts 44 of two adjacent movable spring parts 4. The contact leading-out pin 52 is a leading-out pin of the static spring part, specifically, the static spring part includes a static spring 5, the first static contact 51 is riveted on the static spring 5, the contact leading-out pin 52 and the static spring 5 are integrally formed, but not limited to this, in other embodiments, the contact leading-out pin 52 and the static spring 5 are fixedly connected, and the connection manner may be riveting or the like. The moving spring part 4 is fixed relative to the armature 35 of the magnetic circuit system 3 to form a moving spring armature 35 component. In other embodiments, the movable spring part is inserted into the base, and the armature is in linkage fit with the movable spring part by adopting a pushing clamp.

In this embodiment, the movable spring portion 4 includes a movable spring 41 and a movable conductive plate 42, and one end of the movable spring 41 is fixed to the armature 35 and separated from the armature 35 by an insulating member 38 injection-molded on the armature 35. The other end of the movable contact spring 41 is connected to the movable conductive strip 42, the movable conductive strip 42 is provided with the first movable contact 43 and the second movable contact 44, and the first movable contact 43 and the second movable contact 44 are arranged along the length direction of the movable conductive strip 42, as shown in fig. 1 to 4.

In this embodiment, the number of the relay main bodies is two, and the two relay main bodies are arranged along the length direction of the housing portion. Therefore, the present invention has two movable conductive strips 42, the two movable conductive strips 42 are also arranged along the length direction of the housing portion, the number of the static spring pieces 5 is also two, the two static spring pieces 5 are also distributed along the length direction of the housing portion, and the static conductive strip 6 is located between the two static spring pieces 5, as shown in fig. 2 to 4.

In this embodiment, the common portion (i.e., the static conductive sheet 6) is electrically connected to a detection pin 7, the detection pin 7 is exposed outside the housing portion, and specifically, the detection pin 7 passes through the base 1 downward. The detection pin 7 can be used for detecting the state of the relay, and in particular, can form a separate detection loop with the left contact pin 52 and the right contact pin 52, so as to be used for detecting the contact condition of the contact systems of the left and right relay main bodies. Therefore, the detection pin 7 is only used for signal detection, so that the detection pin 7 can be made thinner as a whole, and the welding difficulty and the welding risk of the detection pin 7 are reduced. The connection mode of the static conductive sheet 6 and the detection lead-out pin 7 can be riveting or welding and the like.

In this embodiment, a heat dissipation structure is disposed at a position between each two adjacent relay main bodies in the housing 2. As shown in fig. 7 and 8, the heat dissipation structure includes a ventilation channel 21 disposed in the housing 2, one end of the ventilation channel 21 is communicated with the outside through a heat dissipation port 22 disposed on the housing 2, the other end of the ventilation channel 21 is hermetically connected to a heat dissipation through groove 11 disposed on the base 1, the heat dissipation through groove 11 is through from top to bottom, and the lower end of the heat dissipation through groove 11 is communicated with the outside, as shown in fig. 13 and 14. Because the bottom end of the base 1 is provided with a plurality of support legs, the lower end of the heat dissipation through groove 11 is suspended in the air, and the smooth state can be kept. The number of the heat dissipation openings 22 is plural, and the plural heat dissipation openings 22 are located on different wall bodies of the housing 2. Specifically, the number of thermovents 22 is three, and one of them thermovent 22 is located the roof of shell 2 to be followed the rectangular form that the width direction of shell 2 extends, remaining two thermovents 22 are located respectively the preceding lateral wall and the back lateral wall of shell 2, so, when dispelling the heat, the air current can be followed a plurality of directions business turn over ventilation channel 21 to improve the radiating efficiency. The heat dissipation leads to groove 11 and avoids the contact system of two adjacent relay main parts, just set up division wall 12 on base 1 between the contact system of two adjacent relay main parts, this division wall 12 can realize the electric arc of controlling the contact group and keep apart, prevents to switch the electric arc that the load produced and influences each other, has effectively prevented drawing the arc of heavy current, adopts division wall 12 design simultaneously, makes the space of electric arc increase, makes electric arc can not directly burn inside base 1, prevents to cause risks such as insulating reduction or catching fire, improves electromagnetic relay's use reliability.

In this embodiment, the magnetic circuit systems 3 of the relay main bodies are vertical. As shown in fig. 1, the magnetic circuit system 3 specifically includes a coil frame 31, a coil 32, an iron core 33 inserted into the coil frame 31, an L-shaped yoke 34, a restoring spring 36, and the armature 35, wherein the coil 32 is wound around the coil frame 31 and connected to two coil lead-out pins 37, and the two coil lead-out pins 37 respectively penetrate downward through the base 1. One side of the yoke 34 is riveted and fixed with the lower end of the iron core 33 below the coil rack 31, and the other side of the yoke 34 is fitted to the outer side of the coil rack 31. The armature 35 and the movable spring part 4 are combined into a movable spring armature 35 part, then the movable spring armature 35 is placed on the other side of the yoke 34 through the armature 35, and the limit is provided by a restoring spring piece 36 inserted on the yoke 34 and the base 1.

The utility model discloses an all-in-one electromagnetic relay, its theory of operation as follows: when the coil of each relay main body is excited, under the action of electromagnetic attraction, the armature 35 is attracted with the upper end of the iron core 33, the armature 35 rotates to drive the first movable contact 43 on the movable spring part 4 to be attracted with the first fixed contact 51, and the second movable contact 44 is attracted with the second fixed contact 61/the third fixed contact 62, so that a series circuit formed by the contact systems of the two relay main bodies is in a conducting state; when the coil of each relay body is deenergized, the armature 35 is rotated back to the original state by the restoring reaction force, the first movable contact 43 is disconnected from the first fixed contact 51, and the second movable contact 44 is also disconnected from the second fixed contact 61/the third fixed contact 62, thereby breaking the series circuit formed by the contact system of the two relay bodies. When the heat dissipation is carried out, the heat generated by the work of the two relay main bodies is respectively conducted to the ventilation channel 21 between the two relay main bodies and taken away by the outside air flow entering the ventilation channel 21, so that a good heat dissipation effect is achieved.

The utility model discloses an all-in-one electromagnetic relay, it integrates a plurality of relay main parts together in advance and forms the series structure to share same casing part, be favorable to reducing holistic area of taking up the board on the one hand (occupy the area of PCB board promptly), thereby be favorable to electromagnetic relay's terminal product's miniaturization; on the other hand, the number of the contact leading pins 52 welded with the PCB is reduced, so that the welding risk is reduced, the material consumption of the contact leading pins 52 is reduced, and the cost is reduced. Specifically, the utility model discloses reduce four contact pins originally into two, inside by quiet conducting strip 6 communicates, and need not communicate through PCB board welding. For a large-current relay, because the contact leading-out pins (which can be called as power leading-out pins) are thicker, the welding difficulty is higher, and the larger the current is, the larger the heat is, the welding of the two contact leading-out pins is omitted, so that the welding difficulty, the welding cost and the risks caused by welding are greatly reduced. In order to realize controlling the detection of two relay contact states originally, the utility model discloses draw forth a detection pin 7 from middle quiet conducting strip 6 for the detection of signal, whether the contact state of distinguishable left and right sides has unusually.

The utility model discloses be equipped with fore-and-aft ventilation channel 21 on shell 2, let inside heat can from the following toward outer diffusion, increase the radiating effect, if in addition other auxiliary measure such as forced air cooling, the radiating effect is more obvious. The base 1 is provided with a skylight type heat dissipation through groove 11, which can effectively promote the heat dissipation of the internal structure and form a heat dissipation channel communicated from the bottom to the top through matching with the shell 2. Because relay power is great, and load current is great, and the relay generates heat obviously, consequently, prior art generally needs the welding position of contact pin-out to increase the supplementary heat dissipation of copper bar. The utility model discloses a after the contact pin-out halved, can reduce the quantity that is used for supplementary radiating copper bar simultaneously to further reduction in production cost. Meanwhile, the utility model discloses a heat radiation structure assists the heat dissipation, can ensure the utility model discloses effectively dispel the heat, can not influence holistic heat dispersion because of the reduction of supplementary radiating copper bar quantity.

The utility model discloses an all-in-one electromagnetic relay does not relate to the part and all is the same with prior art or can adopt prior art to realize.

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

Claims (10)

1. An all-in-one electromagnetic relay is characterized in that: the relay comprises a shell part and a plurality of relay bodies arranged in the shell part, wherein each relay body respectively comprises a magnetic circuit system and a contact system, the contact systems of the relay bodies are sequentially connected in series in the shell part to form a series circuit, or the relay bodies are distributed along a preset direction, and the contact systems of every two adjacent relay bodies are provided with a common part along the preset direction, so that the contact systems of the relay bodies form a series circuit; the contact leading-out pins at the two ends of the series circuit are respectively exposed outside the shell part.

2. The all-in-one electromagnetic relay according to claim 1, characterized in that: the contact system comprises a movable spring part and a static spring part, wherein the movable spring part is provided with a first movable contact and a second movable contact, the static spring part is provided with a first static contact, the public part is a static conducting strip which is provided with a second static contact and a third static contact, the first movable contact is correspondingly matched with the first static contact, and the second static contact and the third static contact are respectively correspondingly matched with the second movable contacts of the two adjacent movable spring parts.

3. The all-in-one electromagnetic relay according to claim 2, characterized in that: the contact leading-out pin is a leading-out pin of the static spring part, and the movable spring part is relatively fixed with the armature of the magnetic circuit system to form a movable spring armature part.

4. The all-in-one electromagnetic relay according to claim 3, characterized in that: the movable spring part comprises a movable spring piece and a movable conducting strip, one end of the movable spring piece is fixed with the armature, the other end of the movable spring piece is connected with the movable conducting strip, and the movable conducting strip is provided with the first movable contact and the second movable contact.

5. The all-in-one electromagnetic relay according to any one of claims 1 to 4, characterized in that: the public part is electrically connected with a detection lead-out pin which is exposed outside the shell part.

6. The all-in-one electromagnetic relay according to any one of claims 1 to 4, characterized in that: the shell body part comprises a base and a shell with an opening at the bottom end, the plurality of relay main bodies are respectively arranged on the base, and the bottom of the shell is connected with the base and contains the plurality of relay main bodies.

7. The all-in-one electromagnetic relay according to claim 6, characterized in that: and a heat dissipation structure is arranged at the position between every two adjacent relay main bodies in the shell.

8. The all-in-one electromagnetic relay according to claim 7, characterized in that: the heat dissipation structure comprises a ventilation channel arranged in the shell, one end of the ventilation channel is communicated with the outside through a heat dissipation port arranged on the shell, the other end of the ventilation channel is hermetically communicated with a heat dissipation through groove arranged on the base, and the heat dissipation through groove is communicated with the outside.

9. The all-in-one electromagnetic relay according to claim 8, characterized in that: the number of the heat dissipation openings is multiple, and the multiple heat dissipation openings are located on different wall bodies of the shell; the heat dissipation through groove avoids the contact systems of the two adjacent relay main bodies, and a separation wall is arranged between the contact systems of the two adjacent relay main bodies on the base.

10. The all-in-one electromagnetic relay according to claim 1, characterized in that: the number of the relay main bodies is two, and the two relay main bodies are arranged along the length direction of the shell part.

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