JP3218164U - Heat dissipation structure of relay - Google Patents

Abstract

A heat dissipation structure for a relay is provided.
A heat dissipation structure of a relay includes a relay main body, two contact pieces, and a first end of the two contact pieces is located in the relay main body and a second end of the relay main body. Exposed outside. The second ends of the two contact pieces 20 are connected to the two connecting pieces 30, respectively, and the contact piece 20 and the connecting piece 30 are an integral structure or a separated structure connected by welding. On at least two contact pieces 20 or connecting pieces 30, a heat dissipating body 40 capable of expanding the heat dissipating area is installed. The heat generated during operation of the relay is effectively absorbed and dissipated through the heat dissipating body 40, thus lowering the temperature of the relay body 10 and the connection point, protecting the relay and extending the life, and safety of electricity use. To improve.
[Selection] Figure 3

Description

  The present invention relates to a relay, and more particularly to a heat dissipation structure of the relay.

  A relay is a kind of electric control device. When the change in the input amount reaches the specified requirement, the electric output circuit is an electric device that causes a predetermined step change by the control amount. The operation principle of the relay is that a coil is mounted on a “U” -shaped magnetic conductor, a movable armature is provided on the upper surface of the magnetic conductor, and two rows of contact point bullets are provided on both sides of the magnetic conductor. Under non-actuated conditions, the contact point bullet lifts the armature upwards, thereby maintaining a constant gap between the armature and the conductor. When the electromagnetic torque in the air gap exceeds the reaction torque, the armature is attracted to the magnetic conductor, and at the same time, the armature pushes and moves the contact point bullet. Thereby, the normally closed contact point is opened, the normally open contact point is closed, and the relay operation is completed. When the electromagnetic torque is reduced to a certain value, the contact point and the armature return to their original positions due to the reaction torque of the contact point bullet, and prepare for the next operation.

  The connecting pieces of relays currently used are generally connected to an external power source by metal pieces and / or copper stranded wires having the same width from end to end. Since this type of system has a small heat dissipation area, the heat generated during the operation of the relay cannot be taken out immediately, the temperature of the relay contact piece and the connecting piece becomes too high, the product temperature rises, Unable to meet quality requirements.

  In the prior art, since the heat dissipating area is small, the heat generated in the operation process of the relay cannot be taken out immediately, the temperature of the relay contact piece and the connecting piece becomes too high, the product temperature rises, There is a disadvantage that quality requirements cannot be achieved.

  The present invention relates to a heat dissipating structure of a relay that can solve the temperature rise problem of the relay and connecting piece in a limited size relay.

  The heat dissipating structure of the relay according to the present invention has a relay body and two contact pieces. The first ends of the two contact pieces are both located in the relay body, and the second ends are both exposed outside the relay body. The second ends of the two contact pieces are respectively connected to the two connecting pieces, and a heat dissipating body capable of expanding the heat dissipating area is installed on at least two contact pieces or connecting pieces.

  Compared with the prior art, the present invention has the following advantages. Through the heat dissipating body installed on the contact piece or the connecting piece, directly or indirectly, the surface area of the contact piece and the connecting piece is increased, thus increasing the cross-sectional area, reducing the electric resistance, and increasing the heat dissipating area. The heat generated during the operation of the relay is effectively absorbed and dissipated through the heat dissipating body, thus lowering the temperature of the relay body and the contact point, protecting the relay and extending the life, Can be improved. In particular, this type of design eliminates the need to increase the volume of the relay, solves the temperature rise problem of the relay and the connecting piece within a limited size relay, and effectively suppresses the temperature rise of the connecting piece. The electrical resistance and voltage drop of the connecting piece can be reduced and the expected technical effect can be achieved.

It is a three-dimensional schematic diagram of the first embodiment of the present invention. It is another type | mold solid schematic diagram of 1st embodiment of this invention. It is an exploded view of a first embodiment of the present invention. It is a three-dimensional schematic diagram of 2nd embodiment of this invention. It is another type | mold solid schematic diagram of 2nd embodiment of this invention. It is another kind of structure schematic diagram of a second embodiment of the present invention.

(First embodiment)
As shown in FIGS. 1 to 3, the specific structure of the first embodiment of the present invention is a heat dissipation structure of a relay, and has a relay main body 10 and two contact pieces 20. The two contact pieces 20 are in contact with each other and are movable contact pieces 21 and static contact pieces 22 that are separable from each other, and turn on / off the electric device.

  The first ends of the two contact pieces 20 are both located in the relay body 10, and the second ends are both exposed to the outside of the relay body 10. The second ends of the two contact pieces 20 are connected to the two connecting pieces 30, respectively. The contact piece and the connecting piece have an integral structure or a separated structure that is connected by welding. As shown in FIG. 3, as the two connecting pieces 30, a first series connecting piece 31 and a second connecting piece 32 connected to the power source are used. The first connecting piece 31 and the second connecting piece 32 are spaced apart from each other. The dynamic contact piece 21 and the static contact piece 22 extend from the top of the relay body 10 and bend to the left and right sides, respectively. One end of the first contact piece 31 and the moving contact piece 21 are welded, the opposite end extends rearward, and the first tangent portion 311 is formed at the end through a large number of curves. One end of the second connecting piece 32 and the static contact piece 22 are welded, the opposite end extends rearward, and a second tangent portion 321 is formed at the end through numerous curves. A U-shaped engagement tank 33 for fixing is installed on both the first tangent portion 311 and the second tangent portion 321.

  With the above as a basic structure, the heat dissipating body 40 is installed on at least two contact pieces 20 or connecting pieces 30. Through the installation of the heat dissipating body 40, heat can be quickly dissipated, and the temperature rise problem of the relay can be effectively solved. In the present embodiment, the heat dissipating body 40 is a heat dissipating plate 41 having heat dissipating fins 411. The heat dissipation plate 41 is preferably an aluminum plate. The heat dissipating plate 41 is fixed by screwing onto the contact piece 20 or the connecting piece 30 with screws 412. For example, in order to secure a sufficient space for accommodating the two heat dissipating plates 41 at the time of attachment, one heat dissipating plate 41 is installed on the contact piece 20 and the other heat dissipating plate 41 is installed on the connecting piece 30. You can also.

  When the relay generates a large amount of heat during operation, the heat is transferred onto the contact piece 20 and further directly or indirectly dissipated into the air through the heat dissipating plate 41. Furthermore, since the heat dissipating plate 41 has a heat dissipating fin 411 structure, it is possible to effectively increase the heat dissipating area, thereby further enhancing the heat dissipating effect.

(Second embodiment)
As shown in FIGS. 4 to 6, the specific structure of the second embodiment of the present invention is a kind of relay heat dissipation structure. The relay of the present embodiment and the relay of the first embodiment are basically homologous, and only the type of the heat dissipating body 40 is different. The heat dissipating body 40 uses an integral flat surface heat dissipating piece 42 that is larger in the two connecting pieces 30 and forms a larger heat dissipating area. Thereby, the connecting piece 30 not only has a conventional conductive function but also has a heat dissipation function. In order to achieve a better heat dissipation effect, the local area of the connecting piece 30 is expanded several times the original, through the expanded conductive area, the voltage drop is reduced, the heat dissipation area is increased, and the temperature of the relay connection contact is increased. Reduce. In addition, according to a situation, the heat dissipation hole 421 can also be installed in the heat dissipation piece 42 (refer FIG. 6). Thereby, the air of external environment flows in from the heat dissipation hole 421, can carry away heat, and can enhance the heat dissipation effect.

  When a large amount of heat is generated during operation of the relay, the heat is transferred onto the contact piece 20, and the heat is effectively dissipated into the air through the heat dissipating piece 42 having an increased heat dissipating area. By enlarging the surface area of the connecting piece 30, the cross-sectional area can be increased, the electrical resistance can be reduced, and the heat dissipation area can be increased. The connecting piece 30 not only has a conductive function, but can also be used as a heat dissipating piece 42 at the same time, is rational in design, does not require assembly, is low in cost, and is convenient to produce.

  The relay of the first embodiment and the second embodiment described above is suitable for application to an electric meter, particularly a smart electric meter, and protects the electric meter and performs energization and disconnection.

  The above-described embodiments of the present invention do not limit the present invention. Therefore, the scope protected by the present invention is based on the scope of claims for utility model registration to be described later.

DESCRIPTION OF SYMBOLS 10 Relay main body 20 Two contact pieces 21 Dynamic contact piece 22 Static contact piece 30 Two connection pieces 31 1st connection piece 311 1st tangent part 32 2nd connection piece 321 2nd tangent part 33 U-type engagement tank 40 Heat dissipating body 41 Heat dissipating plate 411 Heat dissipating fin 412 Chain screw 42 Heat dissipating piece 421 Heat dissipating hole

Claims (1)

The heat dissipation structure of the relay,
It has a relay body and two contact pieces,
The first ends of the two contact pieces are both located in the relay body, and the second ends of the two contact pieces are both exposed to the outside of the relay body,
The second ends of the two contact pieces are connected to the two connecting pieces, respectively,
A heat dissipating structure for a relay, wherein a heat dissipating body capable of expanding the heat dissipating area is provided on at least the two contact pieces or the two connecting pieces.

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