Solid state relay with protective cover

Abstract

A solid-state relay with a protective cover comprises a relay body and a protective cover, the relay body is recessed at least in one section to form a terminal, the terminal extends upward on both sides to form side walls, the inner wall of the side wall is provided with a positioning groove, and the end of the side wall is provided with an avoiding groove; the protective cover comprises a cover plate for covering the terminal, one end of the cover plate extends backward on both sides to form a hinged part, the hinged part extends into the avoiding groove, and the cover plate is rotatably arranged with the relay body, the other end of the cover plate is provided with a positioning protrusion matched with the positioning groove, when the protective cover is closed, the positioning protrusion is clamped into the positioning groove, so that the protective cover is fixedly covered above the terminal. Through the cooperation of the side wall, the avoiding groove, the hinged part and the clamping structure, stable rotation and firm closure of the protective cover are realized, the overall structure is compact, the number of parts is small, and the production cost is low.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage electrical appliances, specifically to a solid-state relay with a protective cover. Background Technology

[0002] Solid-state relays are a new type of contactless switching device. By utilizing the switching characteristics of semiconductor devices such as switching transistors and thyristors, they can achieve contactless and sparkless connection and disconnection of circuits. Due to their advantages such as low control power, high reliability, long lifespan, and high sensitivity, they have been widely used.

[0003] Conventional solid-state relays have exposed terminals. To protect these terminals, some existing solid-state relays have protective covers installed at the terminals to prevent damage caused by direct exposure.

[0004] The most common protective cover design, such as the solid-state relay with protective flip cover disclosed in Chinese patent CN202373521U, protects the terminals by setting flip covers on the two terminals of the housing and opening and closing the flip covers. However, this common flip cover relies solely on the interference fit of the rotating shaft and fits on top of the terminals, making it prone to opening due to vibration.

[0005] To address this issue, Chinese patent CN 218769303 U discloses a surface-mount solid-state relay that utilizes the inward contraction of the front and rear ends of the housing to form a step, placing both the hinge point and the snap-fit ​​point of the flip cover on one side of the flip cover, thereby limiting the flip cover's movement. However, this method results in the force points for both opening and closing the flip cover being at the hinge point, which can lead to breakage at this location after prolonged use, thus affecting the normal operation of the flip cover.

[0006] Meanwhile, since the hinges of the aforementioned flip-top designs are all close to the housing, gaps or unevenness may exist between the flip-top and the housing in order for the flip-top to open properly, which will affect the overall aesthetics and the quality of the equipment. Utility Model Content

[0007] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a solid-state relay with a protective cover.

[0008] To achieve the above objectives, the present invention provides the following technical solution: A solid-state relay with a protective cover includes a relay body and a protective cover. At least one section of the relay body is recessed to form a terminal, and both sides of the terminal extend upward to form sidewalls. The inner wall of the sidewall is provided with a positioning groove, and the end of the sidewall is provided with a clearance groove. The protective cover includes a cover plate for covering the terminal block. One end of the cover plate extends rearward on both sides to form a hinge portion, and the hinge portion extends into the clearance groove and is rotatably disposed with the relay body. The other end of the cover plate is provided with a positioning protrusion that cooperates with the positioning groove. When the protective cover is closed, the positioning protrusion is engaged in the positioning groove, so that the protective cover is fixedly covering the terminal block.

[0009] The clearance groove extends toward the middle of the relay body and forms a rotating surface at the end of the side wall.

[0010] The hinge extends from the side of the cover plate and is embedded in the clearance groove, and is rotatably connected to the rotating surface.

[0011] The hinge portion has a lateral extension section that fits into the inner wall of the clearance groove.

[0012] The lateral extension section is connected to the cover plate by a rounded transition.

[0013] The hinge part is provided with a rotating shaft at its end, which is rotatably engaged with the rotating surface.

[0014] The top of the sidewall is flush with the upper surface of the relay body.

[0015] The relay body is provided with recessed terminals, side walls, and protective covers at both the front and rear ends.

[0016] The beneficial effects of this utility model are: through the cooperation of the side wall, the clearance groove, the hinge and the buckle structure, the protective cover can be rotated stably and closed firmly. The overall structure is compact, with fewer parts and low production cost.

[0017] The protective cover opens and closes via a rotating shaft, making it easy to operate. It locks in place by using the snap-fit ​​between the positioning protrusions and the positioning groove, providing a clear tactile feedback and a secure closure that is not easily dislodged by vibration. At the same time, the force point is far from the hinge point, so the force it receives will not affect the hinge point. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a side view of the present invention.

[0020] Figure 3 This is a schematic diagram of the contactor body of this utility model.

[0021] Figure 4 This is a schematic diagram of the structure of the protective cover of this utility model. Detailed Implementation

[0022] 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.

[0023] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0024] like Figure 1 As shown, this utility model discloses a solid-state relay with a protective cover, which includes a relay body 100 and a protective cover 200. The relay body includes a base and a top cover, which together form a hollow cavity. The cavity is provided with components for realizing the relay function. The left side shows the protective cover when it is open, and the right side shows the protective cover when it is closed.

[0025] like Figure 3 As shown, at least one section of the relay body 100 is recessed to form a terminal 110. At least two spaced terminals are provided at the terminal for connecting wires. Due to the recessed ends, the relay body is approximately U-shaped. The two sides of the terminal 110 extend upwards to form sidewalls 120. The top of the sidewalls 120 is flush with the upper surface 150 of the relay body 100, resulting in a smooth overall appearance. The inner wall of the sidewalls 120 has a positioning groove 121, and the end of the sidewalls 120 has a clearance groove 130. The clearance groove 130 extends towards the middle of the relay body 100 and forms a rotating surface 140 at the end of the sidewalls 120. That is, the clearance groove partially communicates with the space above the terminal to form a notch 131, and partially covers the relay body 100, thus forming a rotating surface 140 inside.

[0026] like Figure 4 As shown, the protective cover 200 includes a cover plate for covering the terminal 110, with hinge portions 210 extending rearward (i.e., towards the outside of the relay body) from both rear sides of the cover plate. In this embodiment, the hinge portion 210 is generally L-shaped and has a lateral extension extending laterally from the cover plate, which smoothly connects to the cover plate by a downward transition of an arc.

[0027] Two hinges are symmetrically arranged on both sides of the cover plate and located on both sides in the width direction. They are misaligned with the outer surface of the cover plate. That is, when the protective cover is opened, the main stress point of the hinge is the connection point with the cover plate, which is relatively thick, so its reliability is high.

[0028] Furthermore, the hinge portion 210 extends into the clearance groove 130 through the notch 131, such as Figure 2 As shown, the extension extends along the length of the clearance groove and is rotatably mounted with the relay body 100. The end of the lateral extension section is provided with a rotating shaft 211. The rotating surface is provided with a through hole, and the rotating shaft is rotatably placed in the through hole. The other end of the cover plate is provided with a positioning protrusion 220 that cooperates with the positioning groove 121. When the protective cover 200 is closed, the positioning protrusion 220 is engaged in the positioning groove 121, so that the protective cover 200 is fixedly covered above the terminal 110.

[0029] The hinge portion 210 has a lateral extension section that fits against the inner wall of the clearance groove 130. During assembly, the hinge portion 210 is embedded into the clearance groove of the side wall, so that the rotating shaft and the hinge surface in the clearance groove form a rotational engagement, thereby allowing the protective cover to rotate around the hinge shaft. At the same time, the lateral extension section fits against the inner wall of the clearance groove, which limits the maximum closed position.

[0030] The lateral extension section is connected to the cover plate by an arc transition and extends downward, thereby increasing the rotation angle of the cover plate. As a result, when it is opened, its opening angle is larger, and when it is closed, the cover plate can fit closer to the upper surface of the circuit breaker body.

[0031] On both sides of the front end of the cover plate, there are positioning protrusions 220. When the protective cover needs to be closed, rotate the cover plate downwards until its front end contacts the top of the side wall. At this time, the positioning protrusions will slide into and lock into the positioning grooves on the inner wall of the side wall by means of their inclined or arc surfaces, accompanied by a clear "click" sound, indicating that it has been locked. At this time, the protective cover is firmly fixed, effectively protecting the internal wiring terminals. When the protective cover needs to be opened, simply pull the front end of the protective cover upwards with a little force to disengage the positioning protrusions from the positioning grooves.

[0032] In this embodiment, the relay body 100 is provided with recessed wiring terminals 110, side walls 120 and protective covers 200 at both the front and rear ends.

[0033] The embodiments should not be regarded as limitations on the present invention, but any improvements made based on the spirit of the present invention should be within the protection scope of the present invention.

Claims

1. A solid-state relay with a protective cover, comprising a relay body (100) and a protective cover (200), characterized in that: At least one section of the relay body (100) is recessed to form a terminal (110), and the two sides of the terminal (110) extend upward to form a sidewall (120). The inner wall of the sidewall (120) is provided with a positioning groove (121), and the end of the sidewall (120) is provided with a clearance groove (130). The protective cover (200) includes a cover plate for covering the terminal (110). One end of the cover plate extends backward on both sides to form a hinge (210), and the hinge (210) extends into the clearance groove (130) and is rotatably disposed with the relay body (100). The other end of the cover plate is provided with a positioning protrusion (220) that cooperates with the positioning groove (121). When the protective cover (200) is closed, the positioning protrusion (220) is engaged in the positioning groove (121), so that the protective cover (200) is fixedly covering the terminal (110).

2. A solid-state relay with a protective cover according to claim 1, characterized in that: The clearance groove (130) extends toward the middle of the relay body (100) and forms a rotating surface (140) at the end of the side wall (120).

3. A solid-state relay with a protective cover according to claim 2, characterized in that: The hinge (210) extends laterally from the cover plate and is embedded in the clearance groove (130), and is rotatably connected to the rotating surface (140).

4. A solid-state relay with a protective cover according to claim 3, characterized in that: The hinge (210) has a lateral extension section that fits against the inner wall of the clearance groove (130).

5. A solid-state relay with a protective cover according to claim 4, characterized in that: The lateral extension section is connected to the cover plate by a rounded transition.

6. A solid-state relay with a protective cover according to claim 3, characterized in that: The hinge (210) has a rotating shaft (211) at its end, which rotates in conjunction with the rotating surface (140).

7. A solid-state relay with a protective cover according to claim 1, characterized in that: The top height of the sidewall (120) is flush with the upper surface (150) of the relay body (100).

8. A solid-state relay with a protective cover according to claim 1, characterized in that: The relay body (100) is provided with recessed terminals (110), side walls (120) and protective covers (200) at both the front and rear ends.

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