Guide rail type switching power supply
By introducing a reinforced heat dissipation structure and a mating design into the DIN rail switching power supply, the problem of insufficient heat dissipation under high load is solved, achieving effective heat management and stable equipment operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN YISHIDA POWER TECHNOLOGY CO LTD
- Filing Date
- 2025-05-13
- Publication Date
- 2026-05-12
AI Technical Summary
Existing rail-mounted switching power supplies are prone to heat buildup and damage under high loads, and their small size limits their ability to dissipate heat effectively.
The power supply features an enhanced heat dissipation structure design, with multiple heat dissipation holes at both ends and an intake fan at the top. Combined with the convenient assembly and disassembly structure of the rail bracket, this ensures easy installation and effective heat dissipation for the power supply.
Ensuring the power supply operates within its normal operating temperature range improves the reliability and lifespan of the equipment.
Smart Images

Figure CN224233536U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of switching power supply technology, specifically a rail-mounted switching power supply. Background Technology
[0002] A rail-mounted switching power supply is a type of switching power supply that is installed via a DIN rail. It is typically designed with a plug-in structure, allowing for easy insertion into the DIN rail for installation without the need for complex wiring or fixing operations. It is mainly used in fields such as industrial automation control systems to convert the electrical energy from the mains power supply into a power output suitable for specific applications, providing stable DC power to various electronic devices.
[0003] Existing DIN rail switching power supplies still have the following problems when in use: Compared with traditional switching power supplies, DIN rail switching power supplies are often installed in distribution boxes due to their DIN rail mounting structure design. Due to the actual safety space, their overall size is smaller. They use complex and highly integrated switching circuits inside, and they are prone to heat accumulation and damage when operating under high load. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] To address the shortcomings of existing technologies, this invention provides a rail-mounted switching power supply, which solves the problems mentioned in the background section.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, this utility model provides the following technical solution: a rail-mounted switching power supply, including a rail bracket, a power supply body is provided at the front end of the rail bracket, the rail bracket includes a frame, a locking mechanism is provided at the rear end of the frame, a fitting block is fixedly connected to the lower middle part of the front end of the frame, two fitting rods are symmetrically fixedly connected to the top of the fitting block, the power supply body includes a main body that slides against the front end of the frame, a first fitting groove for the fitting block to slide into is provided at the middle of the bottom end of the main body, and two second fitting grooves for the fitting rods to slide into are symmetrically provided on the top wall of the first fitting groove.
[0008] As a further improvement of this utility model: a set of heat dissipation holes are provided at both ends of the main body, and each set of heat dissipation holes consists of multiple holes and is equidistant from top to bottom. Two through slots are symmetrically provided at the top of the main body, and an air intake fan is fixedly installed in each through slot.
[0009] As a further embodiment of this utility model: an output interface panel is provided on one side of the front end of the main body, and multiple output interfaces are arranged in a rectangular array on the front end of the output interface panel; an input interface socket is provided in the middle of the other side of the front end of the main body, and an input interface is provided on the other side of the input interface socket; a wire harness guide frame is provided on the front end of the main body and on the other side of the input interface socket; an indicator light is provided above the other side of the front end of the main body; and a toggle switch is provided below the other side of the front end of the main body.
[0010] As a further improvement of this utility model: multiple auxiliary heat dissipation holes are provided between the center positions of the front and rear side walls of the frame, the card seat mechanism includes two guide rail card seats that are symmetrically and fixedly connected above the rear end of the frame, and the card seat mechanism also includes two assembly slots that are symmetrically opened below the rear end of the frame, and each assembly slot is fixedly installed with an elastic telescopic card seat.
[0011] Compared with the prior art, the beneficial effects of this utility model are:
[0012] 1. In this utility model, by adopting a reinforced heat dissipation structure design, a set of heat dissipation holes are opened at both ends of the power supply body. Each set of heat dissipation holes consists of multiple holes and is equidistant from top to bottom. Two through slots are symmetrically opened at the top of the power supply body, and an air intake fan is fixedly installed in each through slot. The air intake fan can actively guide the air to blow the heat inside the power supply body out through the heat dissipation holes on both sides, ensuring that the power supply operates within the normal operating temperature range.
[0013] 2. In this utility model, the power supply body and the guide rail bracket adopt a disassembly-friendly structural design. A fitting block is fixedly connected to the lower center of the front end of the guide rail bracket, and two fitting rods are symmetrically fixedly connected to the top of the fitting block. The bottom end of the power supply body is provided with a first fitting groove matching the fitting block and a second fitting groove matching the fitting rod. The power supply body can be conveniently disassembled and assembled on the guide rail bracket, which is quite convenient. Attached Figure Description
[0014] Figure 1 This is a perspective view of the entire utility model;
[0015] Figure 2 This utility model provides a three-dimensional guide rail bracket. Figure 1 ;
[0016] Figure 3 This utility model provides a three-dimensional guide rail bracket. Figure 2 ;
[0017] Figure 4 The power supply body of this utility model is three-dimensional. Figure 1 ;
[0018] Figure 5The power supply body of this utility model is three-dimensional. Figure 2 .
[0019] In the diagram: 1. Guide rail bracket; 2. Power supply body; 11. Frame; 12. Guide rail bracket; 13. Auxiliary heat dissipation hole; 14. Assembly slot; 15. Elastic telescopic bracket; 16. Fitting block; 17. Fitting rod; 21. Main body; 22. Air intake fan; 23. Heat dissipation hole; 24. Output interface panel; 25. Indicator light; 26. Input interface socket; 27. Toggle switch; 28. Wiring harness guide frame; 29. First fitting groove; 210. Second fitting groove. Detailed Implementation
[0020] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.
[0021] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0023] Please see Figures 1-5In this embodiment of the utility model, a rail-mounted switching power supply includes a rail bracket 1. A power supply body 2 is located at the front end of the rail bracket 1. The rail bracket 1 includes a frame 11, with a locking mechanism at the rear end. A fitting block 16 is fixedly connected to the lower middle of the front end of the frame 11. Two fitting rods 17 are symmetrically fixedly connected to the top of the fitting block 16. The power supply body 2 includes a main body 21 that slides against the front end of the frame 11. A first fitting groove 29 is formed at the middle of the bottom end of the main body 21 for the fitting block 16 to slide into. The inner top wall of the power supply body 2 has two symmetrically arranged second fitting grooves 210 for sliding fitting rods 17. The power supply body 2 and the guide rail bracket 1 adopt a disassembly-friendly structural design. The lower middle part of the front end of the guide rail bracket 1 is fixedly connected to a fitting block 16, and the top of the fitting block 16 is symmetrically fixedly connected to two fitting rods 17. The bottom end of the power supply body 2 has a first fitting groove 29 matching the fitting block 16 and a second fitting groove 210 matching the fitting rods 17. The power supply body 2 can be easily disassembled and assembled on the guide rail bracket 1, which is quite convenient.
[0024] The main body 21 has a set of heat dissipation holes 23 at both ends. Each set of heat dissipation holes 23 consists of multiple holes and is equidistant from top to bottom. The top of the main body 21 has two through slots symmetrically arranged, and each through slot has an intake fan 22 fixedly installed. The overall structure adopts a reinforced heat dissipation design. The power supply body 1 has a set of heat dissipation holes 23 at both ends. Each set of heat dissipation holes 23 consists of multiple holes and is equidistant from top to bottom. The top of the power supply body 2 has two through slots symmetrically arranged, and each through slot has an intake fan 22 fixedly installed. The intake fan 22 can actively guide airflow and blow the heat inside the power supply body 2 out through the heat dissipation holes 23 on both sides to ensure that the power supply operates within the normal operating temperature range.
[0025] An output interface panel 24 is provided on one side of the front of the main body 21. The front of the output interface panel 24 has multiple output interfaces arranged in a rectangular array. An input interface socket 26 is provided in the middle of the other side of the front of the main body 21. An input interface is provided on the other side of the input interface socket 26. A wire harness guide bracket 28 is provided on the front of the main body 21 and on the other side of the input interface socket 26 to guide the wire harness. An indicator light 25 is provided on the upper part of the other side of the front of the main body 21. A toggle switch 27 is provided on the lower part of the other side of the front of the main body 21. The main body 21 can be connected to AC power equipment through the input interface socket 26. After rectification, filtering, high-frequency inversion, transformation and secondary rectification of the main body 21, a stable DC output voltage is obtained. At this time, the power equipment can be connected through multiple output interfaces to provide stable power supply.
[0026] Multiple auxiliary heat dissipation holes 13 are provided between the center positions of the front and rear side walls of the frame 11 to assist in heat dissipation from the back of the power supply body 2. The mounting mechanism includes two guide rail mounting seats 12 that are symmetrically fixedly connected above the rear end of the frame 11. The mounting mechanism also includes two assembly slots 14 that are symmetrically opened below the rear end of the frame 11. Each assembly slot 14 is fixedly installed with an elastic telescopic mounting seat 15. The entire switching power supply can be installed on the guide rail to be installed through the two upper guide rail mounting seats 12 and the two lower elastic telescopic mounting seats 15.
[0027] The working principle of this utility model is as follows: The overall switching power supply can be installed on the guide rail to be installed through the two upper guide rail brackets 12 and the two lower elastic telescopic brackets 15. It can be connected to the mains equipment through the input interface 26. After rectification, filtering, high-frequency inversion, transformation and secondary rectification of the main body 21, a stable DC output voltage is obtained. At this time, it can be connected to the power equipment through multiple output interfaces to provide stable power supply. Due to the overall reinforced heat dissipation structure design, each end of the power supply body 1 has a set of heat dissipation holes 23. Each set of heat dissipation holes 23 has multiple holes and is equidistant from top to bottom. The top of the power supply body 2 has two through slots symmetrically opened, and each through slot has an intake fan 22 fixedly installed. The intake fan 22 can actively guide the air to blow the heat inside the power supply body 2 out through the heat dissipation holes 23 on both sides, ensuring that the power supply operates within the normal operating temperature range.
[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A rail-mounted switching power supply, comprising a rail bracket (1), wherein a power supply body (2) is provided at the front end of the rail bracket (1); Its features are: The guide rail bracket (1) includes a frame (11), a card seat mechanism is provided at the rear end of the frame (11), and a fitting block (16) is fixedly connected to the lower middle part of the front end of the frame (11). Two fitting rods (17) are fixedly connected to the top of the fitting block (16) in a symmetrical manner. The power supply body (2) includes a main body (21) that slides against the front end of the frame (11). The bottom center of the main body (21) is provided with a first fitting groove (29) for the fitting block (16) to slide into. The top wall of the first fitting groove (29) is symmetrically provided with two second fitting grooves (210) for the fitting rod (17) to slide into. The main body (21) has a set of heat dissipation holes (23) at each end. Each set of heat dissipation holes (23) consists of multiple holes and is equidistant from top to bottom. The top of the main body (21) has two through slots symmetrically arranged, and each through slot is fixedly installed with an air intake fan (22).
2. The rail-mounted switching power supply according to claim 1, characterized in that: The main body (21) has an output interface panel (24) on one side of its front end, and the front end of the output interface panel (24) has multiple output interfaces arranged in a rectangular array.
3. The rail-mounted switching power supply according to claim 1, characterized in that: An input interface seat (26) is provided in the middle of the other side of the front end of the main body (21), and an input interface is provided on the other side of the input interface seat (26). A wire harness guide frame (28) is provided at the front end of the main body (21) and on the other side of the input interface seat (26).
4. A rail-mounted switching power supply according to claim 1, characterized in that: An indicator light (25) is provided on the upper side of the other front end of the main body (21), and a toggle switch (27) is provided on the lower side of the other front end of the main body (21).
5. A rail-mounted switching power supply according to claim 1, characterized in that: Multiple auxiliary heat dissipation holes (13) are provided between the center positions of the front and rear side walls of the frame (11).
6. A rail-mounted switching power supply according to claim 1, characterized in that: The card holder mechanism includes two guide rail card holders (12) that are symmetrically and fixedly connected above the rear end of the frame (11).
7. A rail-mounted switching power supply according to claim 1, characterized in that: The card holder mechanism also includes two symmetrically arranged assembly slots (14) below the rear end of the frame (11), and each assembly slot (14) is fixedly installed with an elastic telescopic card holder (15).