One-piece solid-state relay

Abstract

The one-piece solid-state relay comprises a solid-state relay, two ends of which are provided with wiring terminals, and the lower end face of which is provided with a metal bottom plate; the upper end face of the radiator is fixedly connected with the metal bottom plate of the solid-state relay, and a plurality of radiating fins are arranged on the lower side of the lower end face of the radiator in an array mode in the axis direction; the fixing base is detachably connected with the lower end face of the radiator, a mounting sliding groove is formed in the bottom of the fixing base, a positioning clamping hook is arranged on one side of the mounting sliding groove, a buckle is oppositely arranged on the other side of the mounting sliding groove, and elastic arms are arranged between the two sides of the buckle and the fixing base. The elastic arm can drive the buckle to move towards the direction of the positioning clamping hook when bearing force away from the direction of the positioning clamping hook, and the buckle is integrally formed on the fixing base. The integrally-formed buckle is arranged at the bottom of the fixing base, the buckle has certain deformation capacity through the toughness of materials, when the buckle is installed on the guide rail, the buckle can be matched with the bottom positioning clamping hook to fix the guide rail, installation is convenient, and cost is low.

Description

Technical Field

[0001] The utility model specifically relates to a connected solid-state relay. Background Art

[0002] Solid-state relay (SOLIDSTATERELAYS, hereinafter referred to as "SSR") is a new type of contactless switching device composed entirely of solid-state electronic components. It uses the switching characteristics of electronic components (such as switching transistors, bidirectional thyristors and other semiconductor devices) to achieve the purpose of connecting and disconnecting the circuit without contact and sparks, so it is also called "contactless switch".

[0003] The one-piece solid-state relay, as shown in Chinese patent CN306052678S, is an integrated structure of the solid-state relay and the heat sink. As shown in the patent, the conventional one-piece solid-state relay has a notch or screw hole at the bottom of the heat sink for screw locking, and is fixed by screws. For the one-piece solid-state relay installed on the guide rail, the simple screw fixing method is not suitable for guide rail installation.

[0004] In response to this point, Chinese patent CN220400493U discloses a solid-state relay with temperature control protection. In order to enable it to be fixed on the guide rail, a fixing frame is provided at the bottom of the radiator, and two positioning hooks 91 relatively arranged on the fixing frame are used to achieve positioning and fixation with the guide rail. However, this method makes the structure of the entire fixing frame more complicated, increases the installation process, thereby increasing the production cost and reducing the installation efficiency. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a one-piece solid-state relay.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A conjoined solid-state relay, comprising:

[0008] A solid-state relay, with wiring terminals at both ends and a metal bottom plate at the lower end surface;

[0009] A heat sink, the upper end surface of which is fixedly connected to the metal bottom plate of the solid-state relay, and the lower side of the lower end surface of which is provided with a plurality of heat dissipation fins in an array along the axial direction;

[0010] A fixing base is detachably connected to the lower end surface of the radiator, a mounting groove is provided at the bottom of the fixing base, a positioning hook is provided on one side of the mounting groove, and a buckle is provided on the other side thereof, elastic arms are provided between the two sides of the buckle and the fixing base, the elastic arms can drive the buckle to move toward the positioning hook when subjected to a force away from the positioning hook, and the buckle is integrally formed on the fixing base.

[0011] The buckle comprises:

[0012] The main body can slide relative to the fixing seat, and the front end of the main body is configured to cooperate with the positioning hook to limit the guide rail to be fixed in the installation slide groove;

[0013] An elastic arm, one end of which is fixedly connected to the main body, and the other end of which is fixedly connected to the fixing seat;

[0014] The operating part is integrally formed at the rear end of the main body.

[0015] An S-shaped or U-shaped elastic portion is formed between the two ends of the elastic arm.

[0016] The middle position or both sides of the front end of the main body extend backwards and are connected to the operating part, and the middle section thereof is distributed in a straight line or a curve.

[0017] A protrusion is provided on one side of the main body facing the radiator, and the upper end surface of the protrusion contacts the lower end surface of the radiator.

[0018] The operating portion is provided with a through slot.

[0019] The upper side of the fixing seat is provided with a mounting groove for accommodating the lower end surface of the radiator.

[0020] A limiting block for limiting the lower end surface of the radiator is provided on one side of the mounting groove corresponding to the buckle, and a fixing hole for fixedly connecting with the radiator is provided on the other side.

[0021] Both ends of the solid-state relay are provided with flip covers, which are buckled on the wiring terminals and hinged with the shell of the solid-state relay.

[0022] The beneficial effects of the utility model are as follows: an integrally formed buckle is provided at the bottom of the fixing seat, and the toughness of the material itself is utilized to make the buckle have a certain deformation ability. When installed on the guide rail, it can cooperate with the bottom positioning hook to fix the guide rail, and its installation is convenient and low in cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the utility model.

[0024] Figure 2 It is a schematic diagram of the bottom structure of the utility model.

[0025] Figure 3 It is a structural schematic diagram of the fixing seat of the utility model.

[0026] Figure 4 It is a structural schematic diagram of the fixing seat of the utility model from another angle.

[0027] Figure 5 It is a front view of the fixing seat of the utility model.

[0028] Figure 6 It is a structural schematic diagram of the solid-state relay of the utility model. DETAILED DESCRIPTION

[0029] 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 of 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.

[0030] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0031] The utility model provides a conjoined solid-state relay, which comprises:

[0032] The solid-state relay 1 has connection terminals at both ends, and a metal bottom plate 12 at the lower end thereof. The metal bottom plate 12 is used to connect to a radiator and discharge heat through the radiator to improve the heat dissipation effect. The metal bottom plate is directly fixedly connected to the bottom shell of the solid-state relay by screws or other means, and the relevant circuit inside the metal bottom plate is in contact with the metal bottom plate. The metal bottom plate is made of aluminum or other metals;

[0033] The heat sink 2 has an upper end surface fixedly connected to the metal bottom plate of the solid-state relay, and a plurality of heat dissipation fins are arranged in an array along the axial direction on the lower side of the lower end surface. The heat dissipation fins of the heat sink can be distributed in a fishbone shape along the axial direction, that is, the upper end surface and the lower end surface are in an I-shaped shape, and the heat dissipation fins are distributed between the upper end surface and the lower end surface, and the downwardly inclined setting is more conducive to heat discharge;

[0034] A fixing seat 3 is detachably connected to the lower end surface of the radiator, and a mounting groove 31 is provided at the bottom of the fixing seat, and the mounting groove is used for guide rail installation. A positioning hook 32 is provided on one side of the mounting groove, and a buckle 33 is provided on the other side thereof. The positioning hook 32 cooperates with the buckle 33 to fix the guide rail so that it is firmly fixed in the mounting groove. Elastic arms are provided between the two sides of the buckle and the fixing seat, and the elastic arms can drive the buckle to move toward the positioning hook when subjected to a force away from the positioning hook, and the buckle is integrally formed on the fixing seat.

[0035] When fixing, the guide rail gives the buckle a force to move away from the positioning hook, and after it enters the installation slide groove, the force of the buckle is released, the elastic arm is reset, and the buckle moves toward the positioning hook, thereby fixing the guide rail. The elastic arm's own toughness is directly used to give the buckle a reset force, which eliminates the previous step of additional installation of the fixing buckle, improves production efficiency, and at the same time eliminates materials such as springs, which can further reduce costs.

[0036] The buckle comprises:

[0037] The main body 35 can slide relative to the fixing seat, and its front end is set to cooperate with the positioning hook to limit the guide rail to be fixed in the installation slide groove. The outer side of the limiting part is an inclined surface, which is convenient for the guide rail to be inserted. The main body is relatively moved by using the wedge surface, wherein the main body part is higher than the surface of the installation slide groove, so that a gap is formed between it and the installation slide groove, thereby fixing the guide rail;

[0038] An elastic arm 34, one end of which is fixedly connected to the main body, and the other end of which is fixedly connected to the fixing seat. The elastic arm utilizes its own material toughness to cause the main body to move due to deformation during installation;

[0039] The operating part 37 is integrally formed at the rear end of the main body, and is convenient for use during disassembly. The operating part is driven by a screwdriver to move relatively, thereby releasing the limitation of the main body on the guide rail.

[0040] An S-shaped or U-shaped elastic portion is formed between the two ends of the elastic arm, and a multi-stage bending design is utilized to improve the deformation capacity of the elastic arm itself, thereby preventing the elastic arm from breaking due to long-term use and improving its service life.

[0041] The middle position or both sides of the front end of the main body extend backwards and are connected to the operating part, and the middle section thereof is distributed in a straight line or a curve, and can be designed as a single or multiple pieces according to needs.

[0042] A protrusion 311 is provided on one side of the main body facing the radiator, and the upper end surface of the protrusion contacts the lower end surface of the radiator. The contact between the protrusion and the radiator plays a supporting role. When installing the guide rail, the main body will not move downward due to the vertical force, thereby affecting the installation.

[0043] The operating portion is provided with a through slot 312 to facilitate the insertion of a screwdriver to drive the snapping action.

[0044] The upper side of the fixing seat is provided with a mounting groove 39 for accommodating the lower end surface of the radiator. The radiator is directly fixed in the mounting groove, which makes the fixing of the two more convenient and also enables detachable matching.

[0045] A limiting block 310 for limiting the lower end surface of the radiator is provided on one side of the mounting groove corresponding to the buckle, and a fixing hole 38 for fixed connection with the radiator is provided on the other side.

[0046] The limit block serves to limit the lower end surface of the radiator, that is, one end of the radiator is fixed in the mounting groove, while the other end is fixedly connected to the radiator through the fixing hole by screws, thereby achieving a stable connection between the two and easy disassembly.

[0047] Both ends of the solid-state relay are provided with flip covers 11, which are buckled on the wiring terminals and hinged with the housing of the solid-state relay, and the flip covers play a role in protecting the wiring terminals.

[0048] The embodiments should not be regarded as limiting the present invention, but any improvements based on the spirit of the present invention should be within the protection scope of the present invention.

Claims

1. A conjoined solid-state relay, characterized in that: It includes: A solid-state relay, with wiring terminals at both ends and a metal bottom plate at the lower end surface; A heat sink, the upper end surface of which is fixedly connected to the metal bottom plate of the solid-state relay, and the lower side of the lower end surface of which is provided with a plurality of heat dissipation fins in an array along the axial direction; A fixing base is detachably connected to the lower end surface of the radiator, a mounting groove is provided at the bottom of the fixing base, a positioning hook is provided on one side of the mounting groove, and a buckle is provided on the other side thereof, elastic arms are provided between the two sides of the buckle and the fixing base, the elastic arms can drive the buckle to move toward the positioning hook when subjected to a force away from the positioning hook, and the buckle is integrally formed on the fixing base.

2. The one-piece solid-state relay according to claim 1, characterized in that: The buckle comprises: The main body can slide relative to the fixing seat, and the front end of the main body is configured to cooperate with the positioning hook to realize the limiting part of limiting the guide rail to be fixed in the installation slide groove; An elastic arm, one end of which is fixedly connected to the main body, and the other end of which is fixedly connected to the fixing seat; The operating part is integrally formed at the rear end of the main body.

3. The conjoined solid-state relay according to claim 2, characterized in that: An S-shaped or U-shaped elastic portion is formed between the two ends of the elastic arm.

4. The conjoined solid-state relay according to claim 2 or 3, characterized in that: The middle position or both sides of the front end of the main body extend backwards and are connected to the operating part, and the middle section thereof is distributed in a straight line or a curve.

5. The conjoined solid-state relay according to claim 4, characterized in that: A protrusion is provided on one side of the main body facing the radiator, and the upper end surface of the protrusion contacts the lower end surface of the radiator.

6. The conjoined solid-state relay according to claim 2, characterized in that: The operating portion is provided with a through slot.

7. The conjoined solid-state relay according to claim 2, 3 or 6, characterized in that: The upper side of the fixing seat is provided with a mounting groove for accommodating the lower end surface of the radiator.

8. The conjoined solid-state relay according to claim 7, characterized in that: A limiting block for limiting the lower end surface of the radiator is provided on one side of the mounting groove corresponding to the buckle, and a fixing hole for fixedly connecting with the radiator is provided on the other side.

9. The conjoined solid-state relay according to claim 1, characterized in that: Both ends of the solid-state relay are provided with flip covers, which are buckled on the wiring terminals and hinged with the shell of the solid-state relay.

Images