A 40A relay cup body

Abstract

This utility model provides a 40A relay cup body, belonging to the technical field of relay cup bodies. It includes a hollow cup body with a snap-fit ​​opening along its inner wall at the top. A sealing snap, forming a step with the snap-fit ​​opening, is located on the inner wall of the hollow cup body. An integrally formed shaft support is fixed to the bottom of the inner wall of the arc-shaped cup cavity. During the relay's operation, the contact engagement and disengagement often require a rotating shaft to transmit power or achieve rotation. The shaft support provides a precise installation positioning reference for the rotating shaft, ensuring it remains stably centered, guaranteeing the accuracy and stability of the transmission, and making the relay's operation more reliable. Bossed connectors are fixed to the inner wall of the arc-shaped cup cavity on both sides of the shaft support. These bossed connectors not only fix related components but also improve the overall stability of the cup body, providing a reinforcement effect.

Description

Technical Field

[0001] This utility model relates to the field of relay cup technology, specifically a 40A relay cup. Background Technology

[0002] In relay equipment, the cup body is an important component. Its main function is to provide installation space for the internal contacts and coils of the relay, while also playing a key role in magnetic conduction, arc extinguishing, and insulation.

[0003] The following problems were found in the relevant technology: Currently, common relay cups have some structural deficiencies. For high-current relays such as 40A, the structural design of the cup is particularly important, as it directly affects the performance and service life of the relay. If the layout within the space is chaotic, it will affect the accuracy and stability of the contact engagement and disengagement. To address this, we have proposed a new type of 40A relay cup.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background section of this application, and therefore may include prior art information that does not constitute prior art information known to those skilled in the art. Utility Model Content

[0005] This utility model aims to solve at least one of the technical problems existing in the prior art or related technologies, and its specific technical solution is as follows: A relay cup body includes a hollow cup body. The top of the hollow cup body has a snap-fit ​​opening along its inner wall. The inner wall of the hollow cup body has a sealing snap that forms a step with the snap-fit ​​opening. The bottom of the hollow cup body is fixedly connected to a docking cup seat. The lower part of the inner wall of the hollow cup body and the docking cup seat form an inwardly converging arc-shaped cup cavity. The bottom of the inner wall of the arc-shaped cup cavity is fixedly connected to an integrally formed shaft support. The inner wall of the arc-shaped cup cavity is fixedly connected to boss connector seats located on both sides of the shaft support.

[0006] In the above technical solution, the outer wall of the hollow cup body is provided with a wiring port for connecting the inner cavity, and the inner wall of the wiring port is fixedly connected with a fixing seat integrally formed therewith.

[0007] The inner wall of the hollow cup body is provided with an arc-extinguishing rib located between the sealing slot and the arc-shaped cup cavity, and the arc-extinguishing rib is spirally arranged on the inner wall of the hollow cup body.

[0008] The hollow cup body is made of a magnetically conductive metal material.

[0009] The inner wall of the hollow cup is coated with an insulating coating.

[0010] The clasp of the cup is stepped.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. The inward-curving arc-shaped cup cavity formed by the lower part of the hollow cup body and the docking cup seat can guide the cooling airflow to concentrate in the arc area through the "airflow convergence effect", quickly remove the heat of the arc, reduce the temperature of the arc area by 80-120℃, and at the same time extend the arc movement path, accelerate the extinction of the arc, and avoid the risk of contact sticking or short circuit caused by the arc not being extinguished.

[0012] Second, the spiral arc-extinguishing ribs on the inner wall further guide the arc to move along the spiral path, extending the arc distance by 20%-30% and shortening the arc extinguishing time by 40%, significantly reducing the arc erosion of the contacts, extending the contact service life by more than 3 times, and ensuring reliable switching under 40A high current conditions.

[0013] Third, the curved surface of the cup cavity smoothly transitions the connection between the hollow cup body and the docking cup seat, dispersing the concentrated stress in this area to 2-3 times the contact area, avoiding the sharp stress inflection point of the straight wall structure. At the same time, the arc structure forms a "mechanical support arch", which can transfer the vertical impact load along the curved surface to the docking cup seat, reducing the probability of cup body deformation by 40%, ensuring the relative position stability of internal components, and avoiding relay failure due to structural deformation.

[0014] Fourth, the one-piece molded shaft support at the bottom of the arc-shaped cup cavity provides a circular positioning reference for the relay shaft. The coaxiality error of the shaft installation is ≤0.1mm, ensuring the transmission accuracy of the contact engagement and disengagement action and avoiding poor contact due to shaft misalignment. At the same time, compared with the traditional welded support, the one-piece molded structure improves the connection strength and prevents the support from loosening after the shaft has been rotating for a long time. Attached Figure Description

[0015] Figure 1 This is a front view structural diagram of a 40A relay cup body according to the present invention; Figure 2 This is a top view of a 40A relay cup body according to the present invention; Figure 3 This is a right-side structural schematic diagram of a 40A relay cup body according to the present invention; in, Figures 1 to 3 The correspondence between the reference numerals and component names in the attached drawings is as follows: 1-Hollow cup body, 2-Snap-fit ​​cup mouth, 3-Sealing bayonet, 4-Matching cup seat, 5-Arc-shaped cup cavity, 6-Shaft support, 7-Boss connector seat, 8-Wire connection port, 9-Fixing seat, 10-Arc extinguishing rib, 11-Mounting hole, 12-Matching hole. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] The following are specific implementation cases and appendices. Figure 1-3 The present invention will be further described below, but the present invention is not limited to these embodiments.

[0018] A 40A relay cup body includes a hollow cup body 1. The top of the hollow cup body 1 has a snap-fit ​​opening 2 along the inner wall. The inner wall of the hollow cup body 1 has a sealing slot 3 that forms a step with the snap-fit ​​opening 2. The snap-fit ​​opening 2 and the sealing slot 3 form a series of steps. The position of the steps is used to fit the sealing ring, which can effectively prevent dust, moisture and other substances from entering the cup body and protect the internal components of the relay from the corrosion of the external environment.

[0019] The bottom of the hollow cup body 1 is fixedly connected to a docking cup seat 4, and the lower part of the inner wall of the hollow cup body 1 forms an inwardly converging arc-shaped cup cavity 5 between the docking cup seat 4. The converging shape of the arc-shaped cup cavity 5 can create an "airflow convergence effect." When the relay is working, the internal air is heated by the electric arc, generating convection. The arc-shaped surface can guide the cooling airflow to converge towards the electric arc area, quickly carrying away the heat of the electric arc and reducing the temperature of the electric arc. In actual measurements, the temperature of the electric arc area can be reduced by 80-120℃, further suppressing the continuous burning of the electric arc, improving the arc extinguishing reliability of the relay, and avoiding the risk of contact adhesion or short circuit due to unextinguished electric arc. The connection between the bottom of the hollow cup body 1 and the docking cup seat 4 is a critical area of ​​stress concentration. A straight-walled structure is prone to producing sharp stress inflection points in this area, while the arc-shaped structure can smoothly transition through the curved surface, dispersing the stress to a larger contact area, increasing the stress distribution area by 2-3 times, and preventing the cup body from cracking due to long-term vibration or impact.

[0020] The bottom of the inner wall of the arc-shaped cup cavity 5 is fixed with an integrally formed shaft support 6. During the operation of the relay, the action of contact engagement and disengagement often requires the shaft to transmit power or realize the rotation function. The shaft support 6 provides a precise installation positioning reference for the shaft, ensuring that the shaft can be stably located in the center position, ensuring the accuracy and stability of the transmission, and making the operation of the relay more reliable.

[0021] The inner wall of the arc-shaped cup cavity 5 is fixedly connected with boss connectors 7 located on both sides of the shaft support 6. The boss connectors 7 can not only be used to fix related components, but also improve the stability of the entire cup body, thus achieving a reinforcement effect.

[0022] The hollow cup body 1 has a wiring port 8 on its outer wall for connecting to the inner cavity, and a fixed base 9 integrally formed therewith is fixed to the inner wall of the wiring port 8. Through the wiring port 8 on the side, the wires of the external circuit can be connected to the wiring terminals inside the relay, thereby realizing the circuit's on and off control.

[0023] It is worth noting that the inner wall of the hollow cup body 1 is provided with an arc-extinguishing rib 10 located between the sealing slot 3 and the arc-shaped cup cavity 5, and the arc-extinguishing rib 10 is spirally arranged on the inner wall of the hollow cup body 1. When an electric arc is generated, the arc-extinguishing rib 10 can guide the electric arc to move along the spiral path, extend the movement distance of the electric arc, and accelerate the extinguishing of the electric arc.

[0024] When the contacts of a 40A relay disconnect a large current, an electric arc will be generated. The internal space design of the hollow cup body 1 can increase the arcing space and extend the arcing distance, making it easier for the electric arc to be broken inside the cup body. This protects the contacts from excessive damage by the electric arc, extends the service life of the contacts, and thus improves the service life of the entire relay.

[0025] In addition, the hollow cup body 1 is made of a magnetically conductive metal. The metal is an iron alloy, which has magnetic properties. When the relay is working, it can cooperate with other magnetically conductive components to form a complete and efficient magnetic circuit, so that the magnetic field generated by the coil is effectively applied to the contacts, ensuring the accuracy of the contact engagement and disengagement.

[0026] In addition, the inner wall of the hollow cup body 1 is coated with an insulating coating. The insulating coating is an epoxy resin coating with a thickness of approximately 0.5 mm. This coating has insulating properties and can prevent short circuits or leakage in internal components such as contacts and coils, ensuring the safe operation of the relay.

[0027] The cup opening 2 is stepped.

[0028] Furthermore, mounting holes 11 are evenly distributed on the cup holder 4, and the cup body can be connected to components such as the base of the relay through the central mounting hole 11 at the bottom of the cup.

[0029] The top of the hollow cup body 1 is evenly provided with docking holes 12, which are used to connect the top cover.

[0030] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A 40 A relay cup characterized in that, The utility model relates to a hollow cup (1) is provided with the sealing mouth (3) of step of forming across the buckle cup mouth (2) of top along the inner wall of hollow cup (1) is opened, the bottom of hollow cup (1) is fixedly connected with the butt cup seat (4), and the inner wall lower part of hollow cup (1) and butt cup seat (4) between form the arc cup cavity (5) of inwardly converging, the inner wall bottom of arc cup cavity (5) is fixedly connected with the shaft body support (6) of integral moulding with it, the inner wall of arc cup cavity (5) is fixedly connected with the boss connector seat (7) of being located the two sides of shaft body support (6).

2. A 40A relay cup body according to claim 1, characterized in that: The outer wall of the hollow cup (1) is provided with a connection inner cavity wiring port (8), and the inner wall of the wiring port (8) is fixedly connected with a fixed seat (9) integrally formed therewith.

3. The 40A relay cup body of claim 1, wherein: The inner wall of the hollow cup (1) is provided with an arc extinguishing convex rib (10) between the sealing mouth (3) and the arc cup cavity (5), and the arc extinguishing convex rib (10) is spirally arranged on the inner wall of the hollow cup (1).

4. The 40A relay cup body of claim 1, wherein: The hollow cup (1) is made of a metal material with magnetic conductivity.

5. The 40A relay cup body of claim 1, wherein: The inner wall of the hollow cup (1) is coated with an insulating coating.

6. The 40A relay cup body of claim 1, wherein: The buckle cup mouth (2) is in a stepped shape.

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