Relay with shielding shell

Abstract

This application provides a relay with a shielding shell, which includes a case 1 and a contact structure provided in the case 1, with a shielding shell 2 connected to the case 1. The shielding shell 2 includes a bottom plate 21 that can be fitted tightly to the bottom of a wattmeter to be attached, and the bottom plate 21 of the shielding shell 2 is fitted tightly to the bottom surface of the case 1. The bottom plate 21 of the shielding shell 2 is formed with heat-dissipating wings 211 extending toward the side edges, and the outer extension range of the heat-dissipating wings 211 relative to the bottom plate 21 is configured to cover at least the orthographic projection area of ​​the contact structure on the bottom surface of the case 1. Because the bottom plate of the shielding shell is directly joined to the bottom of the wattmeter, the heat-dissipating wings corresponding to the contact structure inside the case can effectively improve the efficiency of heat conduction between the bottom of the case and the bottom of the wattmeter.

Description

Technical Field

[0001] [Cross - reference to Related Applications] This disclosure claims priority based on a Chinese patent application with application number 202211251896.1 filed on October 13, 2022, and all the contents of the Chinese patent application are incorporated herein by reference.

[0002] [Technical Field] This disclosure relates to the field of relay technology, and particularly to a relay with a shielding shell.

Background Art

[0003] Chinese Patent Document CN209216895U (Filing Date: December 14, 2018) discloses a multi-circuit magnetic holding relay comprising a base body made of insulating material, the base body having a magnetic holding mechanism, multiple sets of movable and fixed contacts, and an even number of conductive pins mounted on it, a push assembly mounted on the base body, a cover body further fixedly connected to the base body, all conductive pins fitted into the base body along the same direction, every pair of conductive pins being electrically connected or disconnected from each other by a set of movable and fixed contacts, a U-shaped shielding cover connected to the outer end face of the cover body and the outer end face of the base body, positioning posts provided on both the outer end face of the cover body and the outer end face of the base body, positioning holes provided on both arms of the U-shaped shielding cover, two positioning holes each matched to two positioning posts, and the U-shaped shielding cover covers the magnetic circuit of the magnetic holding mechanism, thereby disclosing a multi-circuit magnetic holding relay. However, in this invention, the U-shaped shielding cover primarily performs a magnetic shielding function, and the coverage area of ​​the U-shaped shielding cover clearly does not correspond to the internal contact structure of the multi-circuit magnetic holding relay. That is, the internal contact structure of the multi-circuit magnetic holding relay is outside the coverage area of ​​the U-shaped shielding cover, and furthermore, when the magnetic holding relay is installed inside a power meter, the bottom of the U-shaped shielding cover is directly attached to the bottom plate of the power meter, which narrows the heat dissipation space between the multi-circuit magnetic holding relay and the bottom plate of the power meter, making the magnetic holding relay more susceptible to heat dissipation defects and affecting the safety of use and service life of the magnetic holding relay. [Overview of the project]

[0004] In light of such shortcomings of the prior art, this disclosure provides a shielded shell relay primarily aimed at solving the technical problem that conventional magnetic holding relays tend to suffer from poor heat dissipation at the bottom when mounted inside a power meter.

[0005] To achieve the above objectives, this disclosure is implemented by the following technical solutions.

[0006] In other words, the shielded relay of the present disclosure includes a case and a contact structure provided inside the case, wherein the shielded shell is connected to the case, and the shielded shell includes a bottom plate that can be in close contact with the bottom of a power meter to which it is mounted, the bottom plate of the shielded shell is in close contact with the bottom surface of the case, and at least the bottom plate of the shielded shell has heat dissipation side wings that extend outward from the side edges, and the outward extension of the heat dissipation side wings relative to the bottom plate is configured to cover at least the orthographic region of the contact structure on the bottom surface of the case.

[0007] According to one embodiment of the present disclosure, heat dissipation wings are formed on both the left and right sides of the bottom plate, and the two heat dissipation wings correspond to two sets of contact structures inside the case.

[0008] According to one embodiment of the present disclosure, the shielding shell has a generally U-shaped structure and further includes a top plate that is in close contact with the top surface of the case, and side plates that connect the bottom plate and the top plate and are in close contact with the rear side of the case.

[0009] According to one embodiment of the present disclosure, the top surface of the case is provided with a positioning structure for positioning the top plate of the shielding shell, the shielding shell is placed over the case from the rear side (back side) and fixed by positioning matching between the top plate and the positioning structure on the top surface of the case.

[0010] According to one embodiment of the present disclosure, the relay with the shielding shell is a magnetic holding relay.

[0011] According to one embodiment of the present disclosure, if the width dimension of the bottom plate of the shielding shell is defined as D, the width dimension of the heat dissipation side wing on the side of the bottom plate is configured to be approximately the same as the width dimension D of the bottom plate.

[0012] According to one embodiment of the present disclosure, the heat dissipation side wing has a positioning lug that extends toward the rear side of the case.

[0013] According to one embodiment of the present disclosure, a positioning projection is formed on the front side of the case for positional matching with the power meter to be mounted.

[0014] According to one embodiment of the present disclosure, a heat-conducting gel for heat transfer is provided on the inner and / or outer surface of the bottom plate of the shielding shell.

[0015] The above invention has the following advantages or beneficial effects.

[0016] In the shielded relay described herein, the bottom plate of the shielding shell has heat dissipation wings that extend laterally, and the outward extension of the heat dissipation wings covers the projected position of the contact structure inside the case on the bottom surface of the case. As a result, when the relay is mounted inside a power meter, the bottom plate of the shielding shell is in direct contact with the bottom of the power meter. The heat dissipation wings added to the shielding shell do not increase the heat dissipation space between the bottom of the relay and the bottom of the power meter. However, because the bottom plate of the shielding shell is in direct contact with the bottom of the power meter, the heat dissipation wings corresponding to the contact structure inside the case can effectively improve the heat conduction efficiency between the bottom of the case and the bottom of the power meter. This allows for a change from heat dissipation in the existing narrow space to heat dissipation by direct conduction to the bottom of the power meter via the heat dissipation wings. This effectively improves the heat dissipation efficiency of the relay without changing the original magnetic shielding effect of the shielding shell, and further ensures the safety and lifespan of the relay. [Brief explanation of the drawing]

[0017] The features, other features, and advantages described herein will become more apparent by describing the exemplary embodiments in detail with reference to the drawings.

[0018] [Figure 1] This is a schematic diagram of the three-dimensional structure of an embodiment of a relay with a shielding shell in the present disclosure. [Figure 2] This is a plan view of Figure 1. [Figure 3] This is a bottom view of Figure 1. [Figure 4]This is a right side view of Figure 1. [Modes for carrying out the invention]

[0019] The following exemplary embodiments will be described in more detail with reference to the drawings. However, the exemplary embodiments can be carried out in various forms and should not be understood as being limited to the embodiments described herein. In this specification, relative terms, such as “top” and “bottom,” are used to describe the relative relationship of an illustrated assembly to another assembly, and these terms are, for convenience in this specification, based, for example, on the illustrative orientation shown in the drawings. If the illustrated device is turned upside down, it can be understood that the assembly described as “top” becomes the assembly described as “bottom.” Other relative terms, such as “top” and “bottom,” have similar meanings. When one structure is “on” another structure, it may mean that one structure is integrally formed on the other structure, that one structure is “directly” mounted on the other structure, or that one structure is “indirectly” mounted on the other structure by another structure.

[0020] The terms "one," "1," "the said," and "the said" mean that there is one or more elements / components / etc. The terms "includes" and "have" mean open inclusion, and that there may be other elements / components / etc. in addition to the listed elements / components / etc. The terms "first," "second," etc. do not limit the number of objects and are used merely as markers.

[0021] Referring to Figures 1 to 4, one embodiment of the present disclosure provides a relay with a shielding shell, including a case 1 and a contact structure provided within the case 1. The shielding shell 2 is connected to the case 1, and one side that is in close contact with the bottom of a power meter (not shown) to which the shielding shell 2 is attached is defined as the bottom plate 21 of the shielding shell 2, the bottom plate 21 of the shielding shell 2 is in close contact with the bottom surface of the case 1, and at least the bottom plate 21 of the shielding shell 2 has heat dissipation side wings 211 that extend outward from the side edge, and the outward extension of the heat dissipation side wings 211 relative to the bottom plate 21 is configured to cover at least the orthographic region of the contact structure on the bottom surface of the case 1.

[0022] What can be understood is that, in this embodiment, the bottom plate 21 of the shielding shell 2 has heat dissipation side wings 211 that extend laterally, and the outward extension of the heat dissipation side wings 211 covers the projected position of the contact structure inside the case 1 on the bottom surface of case 1, and in this way, when the relay is mounted inside the power meter, the bottom plate 21 of the shielding shell 2 is directly joined to the bottom of the power meter, and the heat dissipation side wings 211 added to the shielding shell 2 do not increase the heat dissipation space between the bottom of the relay and the bottom of the power meter, but the bottom plate 21 of the shielding shell 2, Because it is in direct contact with the bottom of the power meter, the heat dissipation wing 211, which corresponds to the contact structure inside the case 1, can effectively improve the heat conduction efficiency between the bottom of the case 1 and the bottom of the power meter. This changes the heat dissipation from existing heat dissipation in a narrow space to direct conduction to the bottom of the power meter via the heat dissipation wing 211. As a result, the heat dissipation efficiency of the relay can be effectively improved without changing the original magnetic shielding effect of the shielding shell 2, and furthermore, the safety and lifespan of the relay can be guaranteed.

[0023] Referring to FIGS. 2 and 3, in a preferred embodiment, heat dissipation side wings 211 are respectively formed on both the left and right sides of the bottom plate 21, and the two heat dissipation side wings 211 respectively correspond to two sets of contact structures in the case 1. However, those skilled in the art should understand that in other embodiments, when a plurality of sets of contact structures are provided in the relay case 1, the outer extension range of the heat dissipation side wings 211 is arranged to cover the orthographic projection area of the contact structures at the bottom of all the cases 1. In this way, the heat radiated by the contact structures to the corresponding area at the bottom of the case 1 by the heat dissipation side wings 211 can be directly and efficiently conducted to the bottom of the power meter to improve the heat dissipation effect.

[0024] Referring to FIGS. 1 to 4, in a preferred embodiment, the shielding shell 2 generally has a U-shaped structure. The shielding shell 2 includes a bottom plate 21 that is in close contact with the bottom surface of the case 1, a top plate 22 that is in close contact with the upper surface of the case 1, and a side plate 23 that connects the bottom plate 21 and the top plate 22 and is in close contact with the rear side of the case 1. On the upper surface of the case 1, a positioning structure for positioning the top plate 22 of the shielding shell 2 is provided. The shielding shell 2 is covered (provided) on the case 1 from the rear side direction (from the back side), and is fixed by the positioning matching between the top plate 22 and the positioning structure on the upper surface of the case 1.

[0025] It can be understood that in this embodiment, a plurality of positioning ribs are provided at the top of the case 1, and each of these plurality of positioning ribs matches (cooperates) with each other to surround a positioning slot structure. Therefore, the top plate 22 of the shielding shell 2 can be adaptively inserted into the corresponding positioning slot structure for positioning. Also, a positioning bump (positioning protrusion) can be provided in the positioning slot structure, and a positioning hole corresponding to the positioning bump at the top of the case 1 is opened in the top plate 22 of the shielding shell 2. After the top plate 22 is inserted into the positioning slot structure at the top of the case 1, the positioning matching of the positioning bump and the positioning hole plays an anti-retreat function for the top plate 22, and further, the top plate 22 can be more firmly connected to the case 1. Thereby, the connection stability and adhesion between the shielding shell 2 and the case 1 can be ensured. However, those skilled in the art should understand that in other embodiments, the shielding shell 2 may be detachably connected to the case 1 by other methods such as snap-fit connection, and is not limited to the specific embodiments disclosed in this embodiment.

[0026] Referring to FIGS. 1 to 4, in a preferred embodiment, the relay with the shielding shell is a magnetic holding relay.

[0027] Referring to FIGS. 1 and 3, in a preferred embodiment, if the width dimension of the bottom plate 21 of the shielding shell 2 is defined as D, the width dimension of the heat dissipation side wing 211 on the side of the bottom plate 21 is configured to be substantially the same as the width dimension D of the bottom plate 21. In this embodiment, preferably, the heat dissipation side wing 211 is a strip-shaped structure (elongated strip-shaped structure), the heat dissipation side wing 211 is integrally formed with the bottom plate 21, and the width dimension of the heat dissipation side wing 211 is the same as or close to the width dimension D of the bottom plate 21. However, those skilled in the art should understand that in other embodiments, the shape of the heat dissipation side wing 211 is not limited to the specific embodiments disclosed in this embodiment, and as long as the outer extension range of the heat dissipation side wing 211 can cover at least the orthographic projection area of the contact structure on the bottom surface of the case 1, other structures may also be used.

[0028] Referring to Figures 2 and 3, in one preferred embodiment, the heat dissipation wing 211 has a positioning lug 212 extending toward the rear of the case 1. On the front of the case 1, a positioning projection 11 is formed for positional matching with the power meter to be mounted. It can be understood that in this embodiment, the positional matching between the positioning lug 212 on the shielding shell 2 and the positioning projection 11 on the case 1 and the corresponding positioning structure inside the power meter allows the relay to be more firmly fixed to the power meter, and the relay to be in close contact with the power meter's built-in heat dissipation fins (not shown), thereby enhancing the heat dissipation effect. However, those skilled in the art will understand that in other embodiments, the installation position and external structure of the positioning lug 212 on the heat dissipation wing 211 and the positioning projection 11 on the case 1 are not limited to the specific embodiments disclosed in this embodiment, and it is sufficient that the relay is more firmly connected to the power meter and that the relay and the power meter's built-in heat dissipation fins are in better contact for heat dissipation.

[0029] In a preferred embodiment, preferably, a heat-conducting gel for heat transfer is provided on the inner surface (one surface in close contact with the bottom surface of the relay case 1) and / or outer surface (one surface in close contact with the bottom of the power meter) of the bottom plate 21 of the shielding shell 2. The heat-conducting gel can be selected from heat-dissipating silicon or a heat-conducting silicon sheet to improve the heat dissipation efficiency between the bottom of the relay and the bottom of the power meter.

[0030] It should be understood that this disclosure is not limited to the detailed structure and arrangement of the components proposed herein. This disclosure may have other embodiments and may be realized and performed in a variety of forms.

[0031] The aforementioned variations and modifications are included within the scope of this disclosure. It should be understood that the scope of this disclosure and the limited scope of this disclosure also extends to all alternative combinations of two or more apparent individual features referred to herein and / or in the drawings. All these different combinations constitute multiple alternative forms of this disclosure. The embodiments described herein illustrate well-known and optimal forms for realizing this disclosure and are available to those skilled in the art.

[0032] [Explanation of symbols] 1: Case 2: Shielding shell 11: Positioning protrusion 21: Bottom plate 22: Top plate 23: Side panel 211: Heat radiation side wing 212: Positioning lug

Claims

1. A relay with a shielding shell, the relay with the shielding shell is The device includes a case (1) and a contact structure provided inside the case (1), and a shielding shell (2) is connected to the case (1). The shielding shell (2) includes a bottom plate (21) that can be in close contact with the bottom of the power meter to which it is mounted, the bottom plate (21) of the shielding shell (2) is in close contact with the bottom surface of the case (1), and at least the bottom plate (21) of the shielding shell (2) has heat dissipation side wings (211) that extend outward from the side edge. The outward extension of the heat dissipation side wing (211) relative to the bottom plate (21) is configured to cover at least the orthographic region of the contact structure on the bottom surface of the case (1). A relay with a shielding shell.

2. The relay with a shielded shell according to claim 1, wherein the heat dissipation side wings (211) are formed on both the left and right sides of the bottom plate (21), and the two heat dissipation side wings (211) each correspond to two sets of contact structures in the case (1).

3. The shielding shell (2) has a generally U-shaped structure, and the shielding shell (2) further includes a top plate (22) that is in close contact with the upper surface of the case (1), and a side plate (23) that connects the bottom plate (21) and the top plate (22) and is in close contact with the rear side of the case (1), as described in claim 1.

4. A positioning structure for positioning the top plate (22) of the shielding shell (2) is provided on the upper surface of the case (1), the shielding shell (2) is provided on the case (1) from the rear side direction of the case (1), and is fixed by positioning matching between the top plate (22) and the positioning structure on the upper surface of the case (1), as described in claim 3.

5. The relay with the shielding shell is a magnetic holding relay, as described in claim 1.

6. The relay with a shielding shell according to claim 1, wherein, if the width dimension of the bottom plate (21) of the shielding shell (2) is defined as D, the width dimension of the heat dissipation side wing (211) on the side of the bottom plate (21) is configured to be approximately the same as the width dimension D of the bottom plate (21).

7. A relay with a shielding shell according to any one of claims 1 to 6, wherein a positioning lug (212) extending toward the rear side of the case (1) is formed on the heat dissipation side wing (211).

8. A relay with a shielded shell according to any one of claims 1 to 6, wherein a positioning projection (11) for position matching with a power meter to be mounted is formed on the front side of the case (1).

9. A relay with a shielding shell according to any one of claims 1 to 6, wherein a heat conductive gel for heat transfer is provided on the inner surface and / or outer surface of the bottom plate (21) of the shielding shell (2).

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