Relay structure with high fireproof function
Patent Information
- Application Number
- CN202421093028.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-17
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-05-17
AI Technical Summary
After a long time of use, existing relays are prone to carbonization of plastic parts due to splashes generated by contact consumption, which in turn causes short circuits and fires. However, their own body size is small and lacks fire resistance, and cannot effectively resist fires.
A high fire-proof function relay structure is designed, including a relay body, a first housing and a second housing. The first shell seals the relay body through the first accommodation space, the second shell seals the first shell through the second accommodation space, and the second shell is made of metal material, which can effectively isolate the flames and prevent the fire from spreading.
When the relay is ignited internally, the second shell can quickly cover the first shell, effectively isolate the flames, prevent the flames from spreading outward, ensure that the surrounding parts do not ignite, and significantly improve the fire resistance.
Smart Images
Figure CN222483227U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of relays, in particular to a high fire-proof function relay structure. Background Art
[0002] A relay is an electrical control device. When the change in input quantity reaches the specified requirements, the controlled quantity in the electrical output circuit undergoes a predetermined step change. It has an interactive relationship between the input circuit and the output circuit. It is usually used in automated control circuits. In fact, it is an automatic switch that uses a small current to control a large current. Therefore, it plays the role of automatic adjustment, safety protection, and circuit conversion in the circuit. After the relay is used for a long time, the spatter produced by the consumption of the contacts will adhere to the surrounding plastic parts, which is easy to cause carbonization of the plastic parts. The carbonized plastic parts further cause the relay to short-circuit and catch fire. The existing relay itself is small in size and does not have fireproof performance. Even if the relay catches fire, it cannot resist the fire. Utility Model Content
[0003] The purpose of the utility model is to provide a high fire-proof function relay structure to address the deficiencies of the prior art. When the internal part of the relay ignites, the fire source can be quickly extinguished. The second shell completely covers the first shell, effectively isolating the flames and preventing the flames from spreading outward and causing the surrounding parts to ignite. The fire-proof performance is strong.
[0004] To achieve the above-mentioned purpose, the utility model provides a high fire-proof function relay structure, including a relay body, a first shell arranged on the relay body, and a second shell arranged on the first shell, the first shell being provided with a first accommodating space for accommodating the relay body, the second shell being provided with a second accommodating space for accommodating the first shell, the first shell being covered on the outside of the relay body through the first accommodating space so that the first shell seals the relay body, and the second shell being covered on the outside of the first shell through the second accommodating space so that the second shell seals the first shell.
[0005] Preferably, the first shell is detachably connected to the second shell, the first shell is provided with a card block, the card block is protruded from the outer wall of the first shell, the second shell is provided with a card slot, the card slot is recessed from the outer wall of the second shell, and the card block protrudes into the card slot.
[0006] Preferably, the outer periphery of the first shell and the outer periphery of the second shell are both provided with an outwardly convex arc surface.
[0007] Preferably, the first shell is made of plastic material.
[0008] Preferably, the second shell is made of metal.
[0009] The utility model has the beneficial effects that when the inside of the relay ignites, the fire source can be quickly extinguished, and the second shell completely covers the first shell, effectively isolating the flames, preventing the flames from spreading outwards and causing surrounding parts to ignite, and has strong fireproof performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a structural schematic diagram of the utility model.
[0011] Figure 2 It is a schematic diagram of the exploded structure of the utility model.
[0012] Figure 3 It is a schematic diagram of the bottom structure of the utility model.
[0013] Reference numerals include:
[0014] 1——First housing 11——Card block
[0015] 2——Second housing 21——Card slot
[0016] 3——Relay body 4——Arc surface. DETAILED DESCRIPTION
[0017] The utility model is described in detail below with reference to the accompanying drawings.
[0018] like Figures 1 to 3 As shown, a high fire protection function relay structure of the utility model includes a relay body 3, a first shell 1 arranged on the relay body 3, and a second shell 2 arranged on the first shell 1, the first shell 1 is provided with a first accommodating space for accommodating the relay body 3, the second shell 2 is provided with a second accommodating space for accommodating the first shell 1, the first shell 1 is covered on the outside of the relay body 3 through the first accommodating space, so that the first shell 1 seals the relay body 3, and the second shell 2 is covered on the outside of the first shell 1 through the second accommodating space, so that the second shell 2 seals the first shell 1.
[0019] The first housing 1 is covered on the outside of the relay body 3 through the first accommodating space, so that the first housing 1 seals the relay body 3. The second housing 2 is covered on the outside of the first housing 1 through the second accommodating space, so that the second housing 2 seals the first housing 1. Both the first accommodating space and the second accommodating space are square structures, which are more matched with the shape of the relay body 3, and can better and completely cover the relay body 3, with high protection performance. The first housing 1 uses a plastic material with strong glow-wire ability, which can quickly extinguish the fire source when the inside of the relay is ignited. The second housing 2 is added to the outside of the relay, and the second housing 2 completely covers the first housing 1, which can effectively isolate the flames. When the relay is on fire, it will not cause the surrounding parts to ignite, so that the flames cannot burn other external parts, preventing the fire from becoming more and more serious. The utility model can quickly extinguish the fire source when the inside of the relay is ignited, and the second housing 2 completely covers the first housing 1, effectively isolating the flames, preventing the flames from spreading outward and causing the surrounding parts to ignite, and has strong fireproof performance.
[0020] The first shell 1 and the second shell 2 of this embodiment are detachably connected, the first shell 1 is provided with a card block 11, the card block 11 is formed by protruding from the outer wall of the first shell 1, the second shell 2 is provided with a card slot 21, the card slot 21 is formed by recessed from the outer wall of the second shell 2, and the card block 11 protrudes into the card slot 21. Specifically, when the first shell 1 and the second shell 2 are assembled, the card block 11 and the card slot 21 are used for assembly and fixing, which can effectively prevent the accidental separation between the first shell 1 and the second shell 2. When the first shell 1 and the second shell 2 need to be disassembled, it is only necessary to press the card block 11 so that the card block 11 is withdrawn from the card slot 21, thereby facilitating the separation of the second shell 2 from the first shell 1. The structure is simple and compact, and the installation and disassembly are convenient, which improves the loading and unloading efficiency between the first shell 1 and the second shell 2.
[0021] In this embodiment, the outer periphery of the first shell 1 and the outer periphery of the second shell 2 are both provided with a convex curved surface 4. Specifically, the outer periphery of the first shell 1 and the outer periphery of the second shell 2 are both provided with a convex curved surface 4. Compared with the traditional angular surfaces with sharp edges, the provision of the curved surface 4 can reduce the probability of scratch damage between the outer periphery of the first shell 1 and the outer periphery of the second shell 2, and between the second shell 2 and other parts, improve the protection performance, and effectively avoid the angular surfaces from cracking and damage due to excessive stress concentration, thereby extending the service life.
[0022] The first housing 1 of this embodiment is made of plastic material. Specifically, as a preferred material, the plastic material is selected from high glow-wire flame-retardant PP plastic or high CTI flame-retardant PP plastic. High glow-wire flame-retardant PP plastic means that the glow-wire test can reach 850-900°C, and it also has excellent high temperature resistance, electrical insulation, flame retardant, mechanical properties and corrosion resistance. When the relay is overloaded or short-circuited, it will cause the relay to catch fire and even cause a fire. High glow-wire flame-retardant PP plastic is a flame-retardant material that is not easy to burn or extinguish itself in a fire or high temperature environment. High glow-wire performance means safer use performance. The flame-retardant V0 grade PP material with high CTI characteristics of high CTI flame-retardant PP plastic is halogen-free and flame-retardant, and the glow-wire ignition temperature can reach 850°C, and the flammability index reaches 960°C.
[0023] The second housing 2 of the present embodiment is made of metal. Specifically, as a preference, the metal material is steel, iron or aluminum, wherein the second housing 2 made of steel has good pressure resistance and corrosion resistance and can be used in relatively harsh environments. The second housing 2 made of iron is light in weight and has high thermal conductivity, and is suitable for applications in high-temperature environments. The second housing 2 made of aluminum is lightweight and highly rust-resistant, and is suitable for high-speed operation. When the relay body 3 catches fire, the second housing 2 made of metal can isolate the flames, preventing the flames from spreading outward and burning surrounding components.
[0024] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.
Claims
1. A high fire protection function relay structure, characterized in that: The invention comprises a relay body, a first shell arranged on the relay body and a second shell arranged on the first shell, wherein the first shell is provided with a first accommodating space for accommodating the relay body, the second shell is provided with a second accommodating space for accommodating the first shell, the first shell is covered on the outside of the relay body through the first accommodating space so that the first shell seals the relay body, and the second shell is covered on the outside of the first shell through the second accommodating space so that the second shell seals the first shell.
2. A high fire protection function relay structure according to claim 1, characterized in that: The first shell is detachably connected to the second shell. The first shell is provided with a card block, which is protruded from the outer wall of the first shell. The second shell is provided with a card slot, which is recessed from the outer wall of the second shell. The card block protrudes into the card slot.
3. A high fire protection function relay structure according to claim 2, characterized in that: The outer periphery of the first shell and the outer periphery of the second shell are both provided with an outwardly convex arc surface.
4. A high fire protection function relay structure according to claim 1, characterized in that: The first housing is made of plastic material.
5. A high fire protection function relay structure according to claim 1, characterized in that: The second shell is made of metal.