An output load protector

Abstract

The utility model relates to protector technical field provides an output no -load protector, including base plate, the top of base plate is fixed with circuit board, the edge position of base plate top is fixed with shell, the top of circuit board is provided with protection structure, the top of shell is fixed with heat dissipation structure, one side of shell inside evenly is provided with sealing structure. The utility model discloses is provided with sealing structure, sealing cover and sealing sleeve screw connection can block the gap connected between sealing sleeve and connecting wire, avoid dust into the inboard of sealing sleeve, the inner wall of sealing ring and the outer wall of sealing sleeve mutually rub against can avoid dust through the gap and enter the inboard of shell, simultaneously, the sealing sleeve and sealing ring of symmetrical distribution can provide structural support, prevent external force and pull and lead to line loose, realized the device has the function that dust enters the inboard of shell, improved the security and service life of the output no -load protector when using.

Description

Technical Field

[0001] This utility model relates to the field of protector technology, and in particular to an output no-load protector. Background Technology

[0002] In applications such as power electronic equipment, motor drive systems, switching power supplies, and inverters, if the output is in a no-load or light-load state, it may cause damage to the power supply or driver. Some circuits may burn out power devices due to voltage rise or abnormal current when no-load. Therefore, it is necessary to design an output no-load protector.

[0003] Traditional no-load protectors are prone to dust entering the wiring terminals during use, which can cause internal dust interference and affect the normal service life of the protector. Therefore, it is necessary to design a new type of no-load protector. Utility Model Content

[0004] The purpose of this utility model is to provide an output no-load protector to solve the defect that dust easily enters the wiring of the existing output no-load protector during use, causing dust interference inside the protector and affecting its normal service life.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an output no-load protector, including a substrate;

[0006] A circuit board is fixed to the top of the substrate, and a housing is fixed to the edge of the top of the substrate;

[0007] The top of the circuit board is provided with a protective structure, and the top of the outer casing is fixed with a heat dissipation structure.

[0008] A sealing structure is uniformly provided on one side of the interior of the outer shell. The sealing structure includes a connecting pipe fixed to one side of the interior of the outer shell, a sealing sleeve fixed on the inner wall of the connecting pipe, a sealing ring uniformly fixed on the inner wall of the sealing sleeve, one end of the sealing sleeve extending to the inner wall of the outer shell and fixed with a limit ring, and the other end of the sealing sleeve extending to the outer side of the outer shell and threadedly connected with a sealing cap.

[0009] Furthermore, the protection structure includes a detector, connecting wires, and connectors. The detector is fixed to the top of the circuit board, and connecting wires are fixed to both ends of the detector. One end of each connecting wire extends to the outside of the housing and is fixed with a connector.

[0010] Furthermore, the outer wall of the connecting wire and the inner wall of the sealing ring abut against each other, and the central axis of the connecting wire and the central axis of the sealing sleeve are collinear.

[0011] Furthermore, the heat dissipation structure includes heat dissipation holes, an adhesive layer, a heat-conducting plate, and heat sinks. The heat dissipation holes are evenly distributed on the top of the outer shell, the adhesive layer is fixed to the top of the outer shell, the heat-conducting plate is fixed to the top of the adhesive layer, and heat sinks are evenly fixed to the top of the heat-conducting plate.

[0012] Furthermore, the heat dissipation holes are evenly distributed on the top of the outer casing, and the heat sinks are evenly distributed on the top of the heat-conducting plate.

[0013] Furthermore, the inner diameter of the limiting ring is equal to the inner diameter of the sealing sleeve, and the central axis of the limiting ring and the central axis of the sealing sleeve are collinear.

[0014] Furthermore, the sealing sleeves are symmetrically distributed on both sides of the outer shell, and the sealing rings are evenly distributed on the inner wall of the sealing sleeves.

[0015] The present invention provides an output no-load protector, the advantages of which are:

[0016] By incorporating a sealing structure with a threaded connection between the sealing cover and the sealing sleeve, gaps between the sealing sleeve and the connecting wire can be blocked, preventing dust from entering the inside of the sealing sleeve. The inner wall of the sealing ring and the outer wall of the sealing sleeve abut against each other, preventing dust from entering the inside of the housing through gaps. At the same time, the symmetrically distributed sealing sleeve and sealing ring provide structural support, preventing external force from causing the circuit to loosen. This device achieves the function of preventing dust from entering the inside of the housing, improving the safety and service life of the output no-load protector during use.

[0017] With a protective structure, the detector has current and voltage sensors inside, which can be used to detect the load status of the device output. When there is no load or abnormal load, the circuit is quickly cut off to prevent the power device from being damaged due to abnormal voltage / current. This makes the device easy to protect the power device and improves the safety of the output no-load protector during use.

[0018] By incorporating a heat dissipation structure, the heat generated by the electronic components inside the housing can be transferred to the heat-conducting plate and heat sink through the equally spaced heat dissipation holes and adhesive layer. The heat sink enhances convective heat dissipation, prevents overheating of the internal components of the protector, reduces the aging effect of high temperature on electronic components, and improves overall reliability. This enables the device to facilitate heat dissipation of the equipment and improves the safety of the output no-load protector during use. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0020] Figure 2 This is a three-dimensional structural schematic diagram of the main cross-section of this utility model;

[0021] Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0022] Figure 4 This is a three-dimensional structural schematic diagram of the main cross-section of this utility model;

[0023] Figure 5 This is a side view cross-sectional three-dimensional structural schematic diagram of the present invention;

[0024] Figure 6 This is a top-view cross-sectional three-dimensional structural diagram of the present invention.

[0025] The reference numerals in the figure are as follows: 1. Substrate; 2. Circuit board; 3. Housing; 4. Protective structure; 41. Detector; 42. Connecting wire; 43. Terminal; 5. Heat dissipation structure; 51. Heat dissipation hole; 52. Adhesive layer; 53. Heat conduction plate; 54. Heat sink; 6. Sealing structure; 61. Connecting pipe; 62. Limiting ring; 63. Sealing sleeve; 64. Sealing ring; 65. Sealing cover. Detailed Implementation

[0026] 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.

[0027] Please see Figures 1-6 The present invention provides an output no-load protector, comprising a base plate 1.

[0028] Reference Figures 1-6 A circuit board 2 is fixed to the top of the substrate 1, and a housing 3 is fixed to the edge of the top of the substrate 1. A protective structure 4 is provided at the top of the circuit board 2. The protective structure 4 includes a detector 41, a connecting wire 42 and a terminal 43. The detector 41 is fixed to the top of the circuit board 2. The connecting wire 42 is fixed to both ends of the detector 41. One end of the connecting wire 42 extends to the outside of the housing 3 and is fixed with a terminal 43. The outer wall of the connecting wire 42 and the inner wall of the sealing ring 64 abut against each other. The central axis of the connecting wire 42 and the central axis of the sealing ring 63 are collinear.

[0029] The detector 41 is connected to an external device via the connecting cable 42 to monitor the operation of the external device's output in real time. When there is no load on the output, the circuit is quickly cut off to prevent damage to the power device.

[0030] Reference Figure 1 , Figure 2 , Figure 4 and Figure 5 The top of the outer shell 3 is fixed with a heat dissipation structure 5. The heat dissipation structure 5 includes heat dissipation holes 51, an adhesive layer 52, a heat-conducting plate 53, and heat sinks 54. The heat dissipation holes 51 are evenly distributed on the top of the outer shell 3. The adhesive layer 52 is fixed to the top of the outer shell 3. The heat-conducting plate 53 is fixed to the top of the adhesive layer 52. The heat sinks 54 are evenly fixed to the top of the heat-conducting plate 53. The heat dissipation holes 51 are evenly distributed on the top of the outer shell 3. The heat sinks 54 are evenly distributed on the top of the heat-conducting plate 53.

[0031] The heat generated by the power device is conducted to the heat-conducting plate 53 through the heat dissipation holes 51 and the adhesive layer 52. The heat sink 54 is fixed to the top of the heat-conducting plate 53, which can increase the contact area between the heat-conducting plate 53 and the air, forming natural convection. The equidistant design ensures that the heat is evenly dissipated and avoids local heat accumulation.

[0032] Reference Figures 1-6 A sealing structure 6 is uniformly arranged on one side inside the outer shell 3. The sealing structure 6 includes a connecting pipe 61 fixed to one side inside the outer shell 3, and a sealing sleeve 63 fixed on the inner wall of the connecting pipe 61. A sealing ring 64 is uniformly fixed on the inner wall of the sealing sleeve 63. One end of the sealing sleeve 63 extends to the inner wall of the outer shell 3 and is fixed with a limiting ring 62. The other end of the sealing sleeve 63 extends to the outer side of the outer shell 3 and is threadedly connected with a sealing cap 65. The inner diameter of the limiting ring 62 is equal to the inner diameter of the sealing sleeve 63. The central axis of the limiting ring 62 and the central axis of the sealing sleeve 63 are collinear. The sealing sleeves 63 are symmetrically distributed on both sides of the outer shell 3. The sealing rings 64 are evenly distributed on the inner wall of the sealing sleeve 63.

[0033] After the sealing ring 64 is screwed on, it fits tightly against the inner wall of the sealing sleeve 63, forming multiple sealing barriers. The connecting tube 61 is fixed inside the housing. The limiting ring 62 is coaxial with the sealing sleeve 63 to offset the impact of vibration on the connecting parts. The threaded connection makes it easy to disassemble, clean or replace. The sealing rings 64 are evenly distributed, and the inner wall of the sealing ring 64 and the outer wall of the connecting line 42 abut against each other, which can effectively prevent dust from entering the inner side of the housing 3 through the gap between the sealing sleeve 63 and the connecting line 42.

[0034] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An output no-load protector, comprising a substrate (1); Its features are: A circuit board (2) is fixed to the top of the substrate (1), and a shell (3) is fixed to the edge of the top of the substrate (1). The top of the circuit board (2) is provided with a protective structure (4), and the top of the outer shell (3) is fixed with a heat dissipation structure (5). A sealing structure (6) is uniformly provided on one side inside the outer shell (3). The sealing structure (6) includes a connecting pipe (61) fixed to one side inside the outer shell (3), and a sealing sleeve (63) fixed on the inner wall of the connecting pipe (61). A sealing ring (64) is uniformly fixed on the inner wall of the sealing sleeve (63). One end of the sealing sleeve (63) extends to the inner wall of the outer shell (3) and is fixed with a limit ring (62). The other end of the sealing sleeve (63) extends to the outer side of the outer shell (3) and is threadedly connected with a sealing cap (65).

2. An output load protector according to claim 1, characterized in that: The protective structure (4) includes a detector (41), a connecting line (42), and a connector (43). The detector (41) is fixed to the top of the circuit board (2). Both ends of the detector (41) are fixed with connecting lines (42). One end of each connecting line (42) extends to the outside of the outer shell (3) and is fixed with a connector (43).

3. An output load protector according to claim 2, wherein: The outer wall of the connecting line (42) and the inner wall of the sealing ring (64) abut against each other, and the central axis of the connecting line (42) and the central axis of the sealing sleeve (63) are collinear.

4. The output no-load protector of claim 1, wherein: The heat dissipation structure (5) includes heat dissipation holes (51), adhesive layer (52), heat-conducting plate (53) and heat sink (54). The heat dissipation holes (51) are evenly opened on the top of the outer shell (3). The adhesive layer (52) is fixed to the top of the outer shell (3). The heat-conducting plate (53) is fixed to the top of the adhesive layer (52). The heat sink (54) is evenly fixed to the top of the heat-conducting plate (53).

5. An output load protector according to claim 4, wherein: The heat dissipation holes (51) are evenly distributed on the top of the outer shell (3), and the heat sinks (54) are evenly distributed on the top of the heat-conducting plate (53).

6. An output load protector as claimed in claim 1, wherein: The inner diameter of the limiting ring (62) is equal to the inner diameter of the sealing sleeve (63), and the central axis of the limiting ring (62) and the central axis of the sealing sleeve (63) are collinear.

7. An output load protector as claimed in claim 1, wherein: The sealing sleeves (63) are symmetrically distributed on both sides of the outer shell (3), and the sealing rings (64) are evenly distributed on the inner wall of the sealing sleeves (63).

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