CN206312823U

CN206312823U - Lower casing attachment structure on HVDC relay metal

Info

Publication number: CN206312823U
Application number: CN201621330557.2U
Authority: CN
Inventors: 林茂豪
Original assignee: Churod Electronics Co Ltd
Current assignee: Churod Electronics Co Ltd
Priority date: 2016-12-02
Filing date: 2016-12-02
Publication date: 2017-07-07
Anticipated expiration: 2026-12-02

Abstract

The utility model discloses lower casing attachment structure on a kind of HVDC relay metal, including metal upper shell and metal lower shell, the surrounding of the upper wall of the metal upper shell extends downwardly out upper side wall, the surrounding of the lower wall of the metal lower shell extends upward lower wall, when the metal upper shell is placed on the metal lower shell, the lower end of the upper side wall is coated on the outside of the upper end of the lower wall；Laser layer is provided between the upper side wall and the lower wall, the laser layer is hermetically connected with the upper side wall and the lower wall.Lower casing attachment structure has the advantages that good seal performance on the utility model HVDC relay metal.

Description

Lower casing attachment structure on HVDC relay metal

Technical field

The utility model is related to lower casing on a kind of relay metal shell, more particularly to a kind of HVDC relay metal Attachment structure.

Background technology

Relay application in various environment, when relay application requires that it has in the environment with fuel gas Good sealing property, this be due to relay operationally, when internal movable contact spring and static contact activity, it is possible to produce electricity Arc, once and the shell of relay can not be effectively isolated the fuel gas in the external world, will enter fuel gas internal so that Set off an explosion accident.

The shell 200 of existing high-current relay is usually to be made up of housing 201 and lid 202, as shown in figure 1, logical Cross the shell for housing 201 and lid 202 being combined and forming inner hollow, then gap between housing 201 and lid 202 makes Be fixedly connected housing 201 and lid 202 with the mode of encapsulating, and form sealant layer 203 so that the inside of housing 201 with Outside sealing, reaches the purpose being isolated from the outside to relay1 case inside.However, because the sealant layer 203 for connecting is easy It is aging, therefore sealing property is unstable.Thus, the sealing effectiveness of existing high-current relay shell 200 is not ideal enough.Although Argon arc welding can also be used in the prior art and the modes such as weldering are punched, and housing 201 and lid 202 are attached, but this side Formula can cause larger destruction to the structure of relay1 case, should not use and the sealing property of shell is also not good enough.

Utility model content

The purpose of this utility model is lower casing connection on the HVDC relay metal for provide a kind of good seal performance Structure.

To achieve these goals, lower casing attachment structure includes on the HVDC relay metal that the utility model is provided Metal upper shell and metal lower shell, the surrounding of the upper wall of the metal upper shell extend downwardly out upper side wall, under the metal lower shell The surrounding of wall extends upward lower wall, when the metal upper shell is placed on the metal lower shell, the lower end cladding of the upper side wall In the outside of the upper end of the lower wall；Laser layer, the laser layer are provided between the upper side wall and the lower wall Hermetically it is connected with the upper side wall and the lower wall.

Compared with prior art, because the utility model is extended downwardly out by by the surrounding of the upper wall of the metal upper shell Upper side wall, the surrounding of the lower wall of the metal lower shell extends upward lower wall, then the lower end of the upper side wall is coated on into institute The outside of the upper end of lower wall is stated, such that it is able to form one by laser welding between the upper side wall and the lower wall Laser layer, and then the upper side wall is firmly coupled with the lower wall, the upper side wall can be made again Reached between the lower wall and be tightly connected, effectively improve the sealing property of relay metal shell, good sealing effect.

It is preferred that the laser layer be the upper side wall with the lower wall laser welding after the articulamentum that is formed.

It is preferred that the shape of the metal upper shell and the metal lower shell is square.

Specifically, the metal upper shell is in tabular, interior box-like or deep-draw shape.

Brief description of the drawings

Fig. 1 is the structure chart of existing high-current relay shell.

Fig. 2 is the exploded view of lower casing attachment structure on the utility model HVDC relay metal.

Fig. 3 is the sectional view of lower casing attachment structure on the utility model HVDC relay metal.

Fig. 4 is the enlarged drawing of part A in Fig. 3.

Fig. 5 is the knot of the flat metal upper shell of lower casing attachment structure on the utility model HVDC relay metal Composition.

Fig. 6 is the knot of the metal upper shell of the deep-draw shape of lower casing attachment structure on the utility model HVDC relay metal Composition.

Specific embodiment

It is the effect for describing technology contents of the present utility model, structural feature in detail, realized, below in conjunction with implementation method And coordinate accompanying drawing to be explained in detail.

Shown as shown in Figure 2, Figure 3 and Figure 4, lower casing attachment structure 100 includes on the utility model HVDC relay metal Metal upper shell 1 and metal lower shell 2, the surrounding of the upper wall 11 of the metal upper shell 1 extend downwardly out upper side wall 12, under the metal The surrounding of the lower wall 21 of shell 2 extends upward lower wall 22, when the metal upper shell 1 is placed on the metal lower shell 2, the upside The lower end of wall 12 is coated on the outside of the upper end of the lower wall 22；It is provided with sharp between the upper side wall 12 and the lower wall 22 Light layer 3, the laser layer 3 is hermetically connected with the upper side wall 12 and the lower wall 22.The laser layer 3 is institute State between the end of upper side wall 12 and the lower wall 22 due to the upper side wall 12 and lower wall 22 after laser welding because of height Temperature and there are small material melts at pad, and the articulamentum for being formed after the cooling period.Because material melts are very small, The outward appearance of the metal shell of relay and structure will not thus be impacted.The metal upper shell 1 and the metal lower shell 2 Shape is square, and square structure can be conducive to the welding between the metal upper shell 1 and the metal lower shell 2.The metal The square structure of upper casing 1 is connected with the metal lower shell 2 and is in interior box-like；Certainly, the metal upper shell 1 can also be in tabular Or deep-draw shape, Fig. 5 is that, in flat metal upper shell 1, Fig. 6 is in the metal upper shell 1 of deep-draw shape.

Compared with prior art, due to the utility model by by the surrounding of the upper wall 11 of the metal upper shell 1 to downward Stretch out upper side wall 12, the surrounding of the lower wall 21 of the metal lower shell 2 extends upward lower wall 22, then by the upper side wall 12 Lower end is coated on the outside of the upper end of the lower wall 22, such that it is able to lead between the upper side wall 12 and the lower wall 22 Cross laser welding and form a laser layer 3, and then the upper side wall 12 is connected securely with the lower wall 22 Pick up and, can make to be reached between the upper side wall 12 and the lower wall 22 again to be tightly connected, effectively improve outside relay metal The sealing property of shell, good sealing effect.

Above disclosed is only preferred embodiments of the present utility model, can not limit the utility model with this certainly Interest field, therefore equivalent variations made according to present utility model application the scope of the claims still fall within the utility model and are covered Scope.

Claims

1. lower casing attachment structure on a kind of HVDC relay metal, it is characterised in that：Including metal upper shell and metal lower shell, The surrounding of the upper wall of the metal upper shell extends downwardly out upper side wall, and the surrounding of the lower wall of the metal lower shell is extended upward down Side wall, when the metal upper shell is placed on the metal lower shell, the lower end of the upper side wall is coated on the upper end of the lower wall It is outside；Be provided with laser layer between the upper side wall and the lower wall, the laser layer and the upper side wall and it is described under Side wall is hermetically connected.

2. lower casing attachment structure on HVDC relay metal as claimed in claim 1, it is characterised in that：The Laser Welding Layer is the articulamentum formed after the upper side wall and the lower wall laser welding.

3. lower casing attachment structure on HVDC relay metal as claimed in claim 1, it is characterised in that：On the metal The shape of shell and the metal lower shell is square.

4. lower casing attachment structure on HVDC relay metal as claimed in claim 3, it is characterised in that：On the metal Shell is in tabular, interior box-like or deep-draw shape.