Breathable relay

Abstract

The utility model discloses a ventilation type relay comprising a relay main body which is internally provided with an arc extinguish chamber. The bottom end of the relay main body is provided with a supporting part and at least one air hole corresponding to the arc extinguish chamber, the air hole is located below the arc extinguish chamber and is communicated with the arc extinguish chamber, and the supporting part is used for supporting the relay main body and lifting the bottom end of the relay main body so that the air hole is communicated with the outside. According to the utility model, the ventilation function is realized, and the ventilation holes are hidden, so that the possibility that foreign matters enter the relay is greatly reduced.

Description

Technical Field

[0001] This utility model relates to relays, and in particular to a ventilated relay. Background Technology

[0002] With the rapid development of new energy-related industries, higher demands are being placed on the power of power distribution circuits. Traditional 12VDC~48VDC / 20A power distribution can no longer meet the needs of social development. Currently, the voltage level in the new energy industry has reached 450VDC and even 1000VDC, making the development of high-power electromagnetic relays a future requirement. However, when a relay disconnects a 450VDC load of 20A or higher, an extremely high-energy arc is generated between the relay contacts, easily burning the contacts and surrounding plastic materials. This means that most high-power relays cannot handle high-voltage, high-current loads. To address this, existing high-voltage relays typically incorporate arc-extinguishing functions, using high-temperature resistant arc-extinguishing chambers to elongate and change the arc's direction, thereby extinguishing it. Due to the high arc temperature, the gas in the arc-extinguishing chamber expands due to heat, easily causing the casing to burst. Therefore, existing technologies usually incorporate vents on the relay casing. However, because these vents are typically located on the top or side walls of the casing, foreign objects can easily enter the relay through them. Utility Model Content

[0003] This utility model addresses the technical problems existing in the prior art by providing a breathable relay.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a ventilated relay, including a relay body, the relay body having an arc-extinguishing chamber; the bottom end of the relay body has a support part and at least one vent hole corresponding to the arc-extinguishing chamber, the vent hole is located below the arc-extinguishing chamber and communicates with the arc-extinguishing chamber, the support part is used to support the relay body and raise the bottom end of the relay body so that the vent hole communicates with the outside.

[0005] Furthermore, the relay body has a baffle located above the vent hole, and the baffle and the vent hole form a vent gap that connects to the arc-extinguishing chamber.

[0006] Furthermore, the vent is an elongated vent, or the vent includes multiple grid holes.

[0007] Furthermore, the support portion includes a plurality of bosses, which are spaced apart along the periphery of the relay body.

[0008] Furthermore, there are four protrusions, which are distributed at the four corners of the bottom of the relay body.

[0009] Furthermore, the relay body includes a contact assembly, the arc-extinguishing chamber is located outside the contact assembly, and the arc generated by the breakage of the contact assembly enters the arc-extinguishing chamber from the top or upper middle part of the arc-extinguishing chamber.

[0010] Furthermore, the relay body also includes a housing, a base, and an electromagnetic component, with the electromagnetic component mounted on the base; the bottom of the housing has an opening, the housing connects to the base and / or the electromagnetic component, and encloses the electromagnetic component, the base, and the contact component therein, with the arc-extinguishing chamber formed between the housing and the base; the housing and / or the base are provided with the support portion, the coil frame of the electromagnetic component and / or the base are provided with the vent hole, and the coil frame of the electromagnetic component and / or the base are provided with the partition portion.

[0011] Furthermore, the contact assembly includes a movable spring portion and a stationary spring portion that cooperate with each other. The movable spring portion is disposed on the armature of the electromagnetic assembly and connected to the yoke of the electromagnetic assembly, while the stationary spring portion is mounted on the base.

[0012] Furthermore, there are two arc-extinguishing chambers, and the contact assembly forms two sets of contacts arranged in parallel. The two arc-extinguishing chambers are located on the opposite sides of the two sets of contacts of the contact assembly. Each arc-extinguishing chamber is connected to the outside through at least one of the vent holes.

[0013] Furthermore, the electromagnetic component is laterally inserted into the base, and the bottom of the coil frame of the electromagnetic component is exposed, with the vent hole located at the bottom of the coil frame.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. Because the present invention has a support part and at least one vent hole corresponding to the arc-extinguishing chamber at the bottom end of the relay body, the vent hole is located below the arc-extinguishing chamber and communicates with the arc-extinguishing chamber. The support part is used to support the relay body and raise the bottom end of the relay body so that the vent hole communicates with the outside. Therefore, the present invention achieves the ventilation function while making the vent hole setting relatively concealed, thereby greatly reducing the possibility of foreign objects entering the relay.

[0016] 2. The present invention further provides the partition part, which blocks the vent hole to further reduce the possibility of foreign objects entering the relay through the vent hole. At the same time, it provides a venting gap between the partition part and the vent hole to connect the arc-extinguishing chamber, thus ensuring venting performance.

[0017] 3. The arc-extinguishing chamber is located outside the contact assembly, and the electric arc generated by the breakage of the contact assembly enters the arc-extinguishing chamber from the top or upper middle part of the arc-extinguishing chamber. This makes the position of the vent hole far away from the arc blowing point, and the arc blowing direction is not consistent with the axial direction of the vent hole. This can prevent the electric arc from leaking out through the vent hole, which is conducive to the dense installation of multiple relays on the circuit board and reduces the space occupied.

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments; however, the present invention is not limited to the embodiments. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention (bottom facing upwards).

[0020] Figure 2 This is a bottom view of the present invention;

[0021] Figure 3 yes Figure 2 AA section view;

[0022] Figure 4 yes Figure 2 BB cross-sectional view;

[0023] In the figure, 1 is the outer shell; 11 is the boss; 2 is the base; 21 is the second partition; 22 is the first vent gap; 3 is the coil frame; 31 is the first vent hole; 32 is the second vent hole; 33 is the first partition; 34 is the second vent gap; 4 is the armature; 5 is the yoke; 6 is the moving spring part; 7 is the stationary spring part; and 8 is the arc extinguishing chamber. Detailed Implementation

[0024] In this utility model, the terms "first," "second," etc., are used only to distinguish similar objects, not to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0025] Please see Figures 1-4 As shown, a ventilated relay of this utility model includes a relay body, an arc-extinguishing chamber 8 inside the relay body, a support part at the bottom end of the relay body and at least one vent hole corresponding to the arc-extinguishing chamber 8, the vent hole being located below the arc-extinguishing chamber 8 and communicating with the arc-extinguishing chamber 8; the support part is used to support the relay body and raise the bottom end of the relay body so that the vent hole always remains in a state of communicating with the outside.

[0026] As a preferred embodiment, the relay body has a baffle located above the vent hole, and the baffle and the vent hole form a vent gap that connects to the arc-extinguishing chamber 8.

[0027] The aforementioned vent is either an elongated hole or includes multiple grid holes. In this embodiment, one arc-extinguishing chamber 8 corresponds to multiple vents. Specifically, the accompanying drawings illustrate one arc-extinguishing chamber 8 with two vents as an example. For ease of distinction, the two vents are named the first vent 31 and the second vent 32, respectively. The first vent 31 is an elongated hole, and the second vent 32 includes multiple grid holes. The partition above the first vent 31 is named the first partition 21, and the ventilation gap between the first vent 31 and the first partition 21 is named the first ventilation gap 22. The partition above the second vent 32 is named the second partition 33, and the ventilation gap between the second vent 32 and the second partition 33 is named the second ventilation gap 34. In other embodiments, one arc-extinguishing chamber corresponds to one vent, i.e., the first vent or the second vent.

[0028] In this embodiment, the support portion includes multiple protrusions 11, which are spaced apart along the periphery of the relay body. Specifically, there are four protrusions 11, which are located at the four corners of the bottom of the relay body, and each protrusion 11 is approximately L-shaped.

[0029] In this embodiment, the relay body includes a contact assembly, and the arc-extinguishing chamber 8 is located outside the contact assembly. The arc generated by the breakage of the contact assembly enters the arc-extinguishing chamber 8 from the top or upper middle part. This ensures that the vent is located far from the arc-blowing point, and the arc-blowing direction is not aligned with the axial direction of the vent, thus preventing the arc from leaking out through the vent. This facilitates the dense mounting of multiple relays on the circuit board, reducing space requirements.

[0030] The relay body also includes a housing 1, a base 2, and an electromagnetic component, with the electromagnetic component mounted on the base 2. The housing 1 has an opening at its bottom, connecting the base 2 and / or the electromagnetic component, and enclosing the electromagnetic component, base 2, and contact component within it. An arc-extinguishing chamber 8 is formed between the housing 1 and the base 2. The housing 1 and / or base 2 have supporting parts, the coil frame 3 of the electromagnetic component and / or base 2 have vent holes, and the coil frame 3 and / or base 2 have partitions. Specifically, the four protrusions 11 are located at the four corners of the bottom of the housing 1. The electromagnetic component is laterally inserted into the base 2, with the bottom of the coil frame 3 exposed. Each vent hole (i.e., the first vent hole 31 and the second vent hole 32) is located at the bottom of the coil frame 3, and the first partition 21 corresponding to the first vent hole 31 is located on the base 2, while the second partition 33 corresponding to the second vent hole 32 is located at the bottom of the coil frame 3.

[0031] The aforementioned contact assembly includes a moving spring portion 6 and a stationary spring portion 7 that cooperate with each other. The moving spring portion 6 is located on the armature 4 of the electromagnetic assembly and connected to the yoke 5 of the electromagnetic assembly. The stationary spring portion 7 is mounted on the base 2. There are two arc-extinguishing chambers 8, and the contact assembly forms two sets of contacts arranged in parallel. The two arc-extinguishing chambers 8 are located on the opposite outer sides of the two sets of contacts of the contact assembly. Each arc-extinguishing chamber 8 is connected to the outside through two vent holes (i.e., the first vent hole 31 and the second vent hole 32).

[0032] When the contact assembly breaks and generates an electric arc, the arc enters the arc-extinguishing chamber 8 for extinguishing, causing the gas inside the arc-extinguishing chamber 8 to expand due to heat and be discharged from the first vent 31 and the second vent 32. Figure 3 , Figure 4 As shown, the arrows indicate the gas discharge path.

[0033] This invention discloses a ventilated relay in which the vent is located at a low position, making the vent more concealed and greatly reducing the possibility of foreign objects entering the relay. Furthermore, this invention includes a baffle that blocks the vent, further reducing the possibility of foreign objects entering the relay through the vent. Simultaneously, a ventilated gap connecting the baffle and the vent to the arc-extinguishing chamber ensures proper ventilation.

[0034] The present invention relates to a breathable relay, and the parts not covered (such as the specific structure and working principle of the electromagnetic components) are the same as or can be implemented using existing technologies.

[0035] The above embodiments are only used to further illustrate a breathable relay of the present invention, but the present invention is not limited to the embodiments. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims

1. A permeable relay, comprising a relay body, wherein the relay body has an arc-extinguishing chamber inside; characterized in that: The bottom end of the relay body is provided with a support part and at least one vent hole corresponding to the arc-extinguishing chamber. The vent hole is located below the arc-extinguishing chamber and communicates with the arc-extinguishing chamber. The support part is used to support the relay body and raise the bottom end of the relay body so that the vent hole communicates with the outside.

2. The ventilated relay according to claim 1, characterized in that: The relay body has a baffle located above the vent hole, and a vent gap is formed between the baffle and the vent hole to connect the arc-extinguishing chamber.

3. The ventilated relay according to claim 1, characterized in that: The vent is an elongated hole, or the vent includes multiple grid holes.

4. The ventilated relay according to claim 1, characterized in that: The support portion includes multiple bosses, which are spaced apart along the periphery of the relay body.

5. The ventilated relay according to claim 4, characterized in that: The four protrusions are located at the four corners of the bottom of the relay body.

6. The ventilated relay according to claim 2, characterized in that: The relay body includes a contact assembly, the arc-extinguishing chamber is located outside the contact assembly, and the arc generated by the breakage of the contact assembly enters the arc-extinguishing chamber from the top or upper middle part of the arc-extinguishing chamber.

7. The ventilated relay according to claim 6, characterized in that: The relay body also includes a housing, a base, and an electromagnetic component, with the electromagnetic component mounted on the base. The housing has an opening at its bottom end, connects to the base and / or the electromagnetic component, and encloses the electromagnetic component, the base, and the contact component therein, with the arc-extinguishing chamber formed between the housing and the base. The housing and / or the base are provided with the support portion, the coil frame of the electromagnetic component and / or the base are provided with the vent hole, and the coil frame of the electromagnetic component and / or the base are provided with the partition portion.

8. The ventilated relay according to claim 7, characterized in that: The contact assembly includes a movable spring portion and a stationary spring portion that cooperate with each other. The movable spring portion is located on the armature of the electromagnetic assembly and connected to the yoke of the electromagnetic assembly, while the stationary spring portion is mounted on the base.

9. The ventilated relay according to claim 7 or 8, characterized in that: The arc-extinguishing chamber is provided in two parts, and the contact assembly forms two sets of contacts arranged in parallel. The two arc-extinguishing chambers are located on the opposite outer sides of the two sets of contacts of the contact assembly. Each arc-extinguishing chamber is connected to the outside through at least one of the vent holes.

10. The ventilated relay according to claim 7, characterized in that: The electromagnetic component is laterally inserted into the base, and the bottom of the coil frame of the electromagnetic component is exposed, with the vent hole located at the bottom of the coil frame.

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