A solid state relay

Abstract

The utility model discloses a solid-state relay, comprising a solid-state relay body, a contact piece arranged on the solid-state relay body, a hexagonal screw threadedly connected to the contact piece, and a pressing piece sleeved on the outside of the hexagonal screw. A limit frame is detachably installed on the top of the solid-state relay body, a circular groove is provided inside the limit frame, a limit ring is installed inside the circular groove, an inner hexagonal groove is penetrated through the middle of the limit ring and matched with the hexagonal screw, and a plurality of anti-rotation blocks which are equidistantly distributed in annular shapes are fixedly connected to the outer side of the limit ring. The utility model can prevent the hexagonal screw from rotating due to vibration, resulting in loosening of the wire, and ensure that the wire is firmly connected, and can limit the limit ring by means of the provided protrusion and the stop block, so as to prevent the limit ring from being separated from the limit frame due to vibration, thereby improving its reliability.

Description

Technical Field

[0001] The utility model relates to the technical field of solid-state relays, in particular to a solid-state relay. Background Art

[0002] A solid-state relay is an electronic switching device used to control electrical loads. Unlike traditional mechanical relays, which rely on electromagnetic coils and mechanical contacts for operation, it uses semiconductor devices to achieve the switching function of the circuit. Compared with traditional mechanical relays, it has the advantages of fast response, long life, low noise, small size and high reliability.

[0003] When wiring existing solid-state relays, the wire is generally placed between the contact piece and the pressure piece, and then the screw is tightened to make the pressure piece press the wire to complete the wiring work. However, due to the huge heat generated by the solid-state relay, it is generally installed on a dedicated radiator in actual use. However, the fan on the radiator will vibrate during operation. After long-term use, the vibration will loosen the screw, making the wire connection not firm, resulting in poor contact and even wire falling off. Utility Model Content

[0004] The purpose of the utility model is to provide a solid-state relay to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a solid-state relay, comprising a solid-state relay body, a contact piece arranged on the solid-state relay body, a hexagonal screw threadedly connected to the contact piece, and a pressure piece sleeved on the outside of the hexagonal screw, the top of the solid-state relay body is detachably installed with a limit frame, the interior of the limit frame is provided with a circular groove, the interior of the circular groove is provided with a limit ring, the middle part of the limit ring is penetrated by an inner hexagonal groove compatible with the hexagonal screw, the outer side of the limit ring is fixedly connected with a plurality of stop blocks distributed in an equidistant ring shape, the inner wall of the circular groove is provided with a plurality of stop grooves matching the stop blocks, and the inner wall of the circular groove is provided with a stop block and a protrusion.

[0006] As a preferred solution of the utility model, the protrusion is a hemispherical structure.

[0007] As a preferred solution of the utility model, a buckle is provided at the bottom of the limit frame, and a slot matching with the buckle is provided at the solid-state relay body.

[0008] As a preferred solution of the utility model, the top and the bottom of the limiting ring are both chamfered.

[0009] As a preferred solution of the utility model, a notch is provided on one side of the limiting frame, and the notch is communicated with the circular groove.

[0010] As a preferred solution of the utility model, fixing holes are provided at both ends of the solid-state relay body.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the utility model can prevent the hexagonal screw from rotating due to vibration and causing the wire to loosen by means of the limit frame, stop groove, limit ring, stop block and hexagonal socket, thereby ensuring that the wire is firmly connected, and the limit ring can be limited by the protrusions and blocks provided to prevent the limit ring from separating from the limit frame due to vibration, thereby improving its reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0013] Figure 2 It is an exploded view of the utility model;

[0014] Figure 3 It is a structural schematic diagram of the limit frame of the utility model;

[0015] Figure 4 It is a structural schematic diagram of the limit ring of the utility model.

[0016] In the figure: 1. solid-state relay body; 2. fixing hole; 3. hexagonal screw; 4. limit frame; 5. limit ring; 6. buckle; 7. hexagonal socket; 8. anti-rotation block; 9. pressure piece; 10. contact piece; 11. chamfer; 12. slot; 13. round groove; 14. anti-rotation groove; 15. protrusion; 16. block; 17. notch. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figures 1 to 4The utility model provides a technical solution: a solid-state relay, comprising a solid-state relay body 1, a contact piece 10 arranged on the solid-state relay body 1, a hexagonal screw 3 threadedly connected to the contact piece 10, and a pressing piece 9 sleeved on the outside of the hexagonal screw 3, a limit frame 4 is detachably installed on the top of the solid-state relay body 1, a circular groove 13 is opened inside the limit frame 4, a limit ring 5 is installed inside the circular groove 13, the limit ring 5 cannot rotate under the action of the stop groove 14 and the stop block 8, the limit ring 5 is sleeved on the outside of the hexagonal screw 3 through the inner hexagonal groove 7, so as to limit the hexagonal screw 3 and prevent the hexagonal screw 3 from rotating due to vibration Movement, causing the wire to loosen, to ensure that the wire is firmly connected, a hexagonal groove 7 compatible with the hexagonal screw 3 is penetrated through the middle of the limit ring 5, and a plurality of stop blocks 8 distributed in an equidistant ring are fixedly connected to the outer side of the limit ring 5, and a plurality of stop grooves 14 matched with the stop blocks 8 are provided on the inner wall of the circular groove 13. By setting a plurality of stop grooves 14 and stop blocks 8, the limit ring 5 can limit the hexagonal screw 3 when the hexagonal screw 3 is rotated to various angles, and the inner wall of the circular groove 13 is provided with a stop block 16 and a protrusion 15. The protrusion 15 cooperates with the stop block 16 to block the limit ring 5 and prevent the limit ring 5 from separating from the limit frame 4.

[0019] Among them, the protrusion 15 is a hemispherical structure, which prevents the protrusion 15 from completely blocking the limit ring 5. When the limit ring 5 is pressed down hard, the limit ring 5 will push the protrusion 15 to deform the limit frame 4, and the limit ring 5 can be smoothly installed in the circular groove 13.

[0020] The bottom of the limit frame 4 is provided with a buckle 6 , the solid-state relay body 1 is provided with a slot 12 matched with the buckle 6 , and the stopper 16 cooperates with the slot 12 to fix the limit frame 4 on the solid-state relay body 1 .

[0021] The top and bottom of the limiting ring 5 are both provided with chamfers 11 , and the chamfers 11 make it easier for the limiting ring 5 to be installed in the circular groove 13 .

[0022] Among them, a notch 17 is opened on one side of the limit frame 4. When the limit ring 5 is installed in the circular groove 13, the limit ring 5 will squeeze the protrusion 15 to deform the limit frame 4. The set notch 17 makes the limit frame 4 easier to deform, thereby facilitating the installation of the limit ring 5, and the notch 17 is connected to the circular groove 13.

[0023] Wherein, fixing holes 2 are provided at both ends of the solid-state relay body 1, and the fixing holes 2 are convenient for fixing the solid-state relay body 1 with screws.

[0024] Specifically, when wiring, place the wire between the pressure piece 9 and the contact piece 10, turn the hexagonal screw 3 to make the pressure piece 9 press the wire tightly. After the wire is fixed, take the limit frame 4, and install the solid-state relay body 1 on the solid-state relay body 1 through the buckle 6, and then take the limit ring 5, align the inner hexagonal groove 7 with the hexagonal screw 3, and put the limit ring 5 on the outside of the hexagonal screw 3. At this time, the limit ring 5 will be blocked by the protrusion 15. If the stop block 8 is not aligned with the stop groove 14 at this time, the hexagonal screw 3 can be slightly rotated, and the hexagonal screw 3 drives the limit ring 5 to rotate so that the stop block 8 is aligned with the stop groove 14, and then press the limit ring 5 downward with force to press the limit ring 5 into the circular groove 13. The limit ring 5 drives the stop block 8 to move, and the stop block 8 is stuck in the stop groove 14, so that the limit ring 5 cannot rotate, thereby restricting the hexagonal screw 3 to prevent the hexagonal screw 3 from loosening due to vibration.

[0025] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] In addition, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", "third" and "fourth" may explicitly or implicitly include at least one of such features.

[0027] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A solid-state relay, comprising a solid-state relay body (1), a contact piece (10) arranged on the solid-state relay body (1), a hexagonal screw (3) threadedly connected to the contact piece (10), and a pressing piece (9) sleeved on the outside of the hexagonal screw (3), characterized in that: A limit frame (4) is detachably mounted on the top of the solid-state relay body (1), a circular groove (13) is provided inside the limit frame (4), a limit ring (5) is installed inside the circular groove (13), a hexagonal groove (7) matching the hexagonal screw (3) is penetrated through the middle of the limit ring (5), a plurality of stop blocks (8) equidistantly distributed in an annular pattern are fixedly connected to the outer side of the limit ring (5), a plurality of stop grooves (14) matching the stop blocks (8) are provided on the inner wall of the circular groove (13), and a stop block (16) and a protrusion (15) are provided on the inner wall of the circular groove (13).

2. A solid-state relay according to claim 1, characterized in that: The protrusion (15) is a hemispherical structure.

3. A solid-state relay according to claim 1, characterized in that: A buckle (6) is provided at the bottom of the limit frame (4), and a clamping groove (12) matching with the buckle (6) is provided on the solid-state relay body (1).

4. A solid-state relay according to claim 1, characterized in that: The top and bottom of the limiting ring (5) are both provided with chamfers (11).

5. A solid state relay according to claim 1, characterized in that: A notch (17) is provided on one side of the limiting frame (4), and the notch (17) is communicated with the circular groove (13).

6. A solid state relay according to claim 1, characterized in that: Both ends of the solid-state relay body (1) are provided with fixing holes (2).

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