Relay sealing structure

Abstract

A relay sealing structure comprises a shell and an insulating head cover matched with the shell, the insulating head cover is provided with a through hole for a winding pin to pass through, a hollow rivet is arranged in the through hole, and a sealing ring is arranged between the rivet and the insulating head cover. According to the principle of the utility model, the hollow rivet is additionally arranged at the through hole, so that the winding pin can penetrate through the hollow rivet, and the strength of the through hole can be enhanced; on the basis of the hollow rivet, the sealing ring is additionally arranged, the winding contact pin penetrates through the hollow rivet and the sealing ring, and after the hollow rivet extrudes the sealing ring, not only can the hollow rivet and the insulating head cover be sealed, but also the hollow rivet and the winding contact pin can be sealed, and water vapor is effectively prevented from entering the relay from the through hole.

Description

TECHNICAL FIELD

[0001] The utility model relates to relay technical field especially a relay sealing structure. BACKGROUND

[0002] The relay mainly includes an insulating head cover, a shell matched with the insulating head cover, a coil holder arranged in the shell, an iron core matched with the coil holder and a contact piece assembly arranged on the insulating head cover. For example, a relay insulating head cover disclosed in Chinese patent No. CN213877955U, the relay insulating head cover is matched with the relay shell, and the relay insulating head cover comprises a plastic body, a tapered hole for a winding pin to pass through is arranged at the bottom of the plastic body, the small end diameter of the tapered hole is substantially the same as the diameter of the winding pin, so that the winding pin can not only pass through the top of the insulating head cover to make a connection, but also can be limited to swing. Since the main components of the relay are installed in the shell, the sealing performance of the shell and the insulating head cover is very important, and water vapor is easy to enter the tapered hole on the existing relay insulating head cover, which affects the service life of the relay. SUMMARY

[0003] The utility model wants to solve the technical problem to provide a kind of relay sealing structure, and sealing performance is better.

[0004] To solve the above technical problems, the technical scheme of the utility model is as follows: a relay sealing structure, comprising a shell and an insulating head cover matched with the shell, a through hole for a winding pin to pass through is arranged on the insulating head cover, a hollow rivet is arranged in the through hole, and a sealing ring is arranged between the rivet and the insulating head cover. The principle of the utility model is that a hollow rivet is added at the through hole, which not only allows the winding pin to pass through, but also can reinforce the strength of the through hole. On the basis of the hollow rivet, a sealing ring is added, the winding pin passes through the hollow rivet and the sealing ring, and after the hollow rivet extrudes the sealing ring, it can not only seal between the hollow rivet and the insulating head cover, but also seal between the hollow rivet and the winding pin, effectively preventing water vapor from entering the relay from the through hole.

[0005] As an improvement, the hollow rivet comprises a rod portion and a head portion arranged at both ends of the rod portion, one end head portion or both end head portions are arranged with the sealing ring between the head portion and the insulating head cover, and the rod portion is a hollow structure.

[0006] As an improvement, the top surface and the bottom surface of the insulating head cover corresponding to the through hole are flat surfaces, and the sealing ring is pressed on the flat surfaces.

[0007] As an improvement, the head portion is umbrella-shaped.

[0008] The utility model compared with prior art brings the beneficial effect that:

[0009] Adding a hollow rivet to the perforation not only allows the winding pin to pass through but also strengthens the perforation. A sealing ring is added to the hollow rivet; the winding pin passes through both the hollow rivet and the sealing ring. The hollow rivet compresses the sealing ring, sealing not only the hollow rivet and the insulating cap but also the hollow rivet and the winding pin, effectively preventing moisture from entering the relay through the perforation. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of a relay.

[0011] Figure 2 This is a partial exploded view of the relay. Detailed Implementation

[0012] The present invention will be further described below with reference to the accompanying drawings.

[0013] like Figure 1 , 2 As shown, a relay sealing structure includes a housing 2 and an insulating head cover 1 that fits tightly against the housing 2. The insulating head cover 1 is integrally injection molded and has two through holes 6 for winding pins 3 to pass through. The winding pins 3 of the coil frame inside the housing 2 extend out through the through holes 6. A hollow rivet 4 is provided in the through hole 6. The hollow rivet 4 includes a rod and heads at both ends of the rod. The winding pins 3 pass through the hollow rod and are clamped and fixed by the umbrella-shaped heads at both ends. A sealing ring 5 is provided between one or both heads and the insulating head cover 1. The top and bottom surfaces of the insulating head cover 1 corresponding to the through holes 6 are flat, and the sealing ring 5 is pressed on the flat surface by the heads.

[0014] The principle of this invention is as follows: A hollow rivet 4 is added at the through hole 6, which not only allows the winding pin 3 to pass through, but also strengthens the strength of the through hole 6. Based on the hollow rivet 4, a sealing ring is added. The winding pin 3 passes through the hollow rivet 4 and the sealing ring. After the hollow rivet 4 compresses the sealing ring, it can not only seal the hollow rivet 4 and the insulating head cover 1, but also seal the hollow rivet 4 and the winding pin 3, effectively preventing moisture from entering the relay from the through hole 6.

Claims

1. A relay sealing structure, comprising a housing and an insulating head cover that mates with the housing, wherein the insulating head cover has a through hole for a winding pin to pass through, characterized in that: The hollow rivet is arranged in the through hole, and a sealing ring is arranged between the hollow rivet and the insulating head cover.

2. A relay sealing structure according to claim 1, characterized in that: The hollow rivet comprises a rod part and head parts arranged at two ends of the rod part, and a sealing ring is arranged between one end head part or both end head parts and the insulating head cover, and the rod part is a hollow structure.

3. The relay seal structure of claim 1, wherein: The top surface and the bottom surface of the insulating head cover corresponding to the through hole are flat surfaces, and the sealing ring is pressed on the flat surfaces.

4. The relay seal structure of claim 2, wherein: The head part is in the shape of an umbrella.

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