Surface-mounted thermistor

Abstract

The utility model relates to thermistor technical field, concretely is a kind of surface mount type thermistor, including ceramic shell, the inside fixedly connected with thermistor body of ceramic shell, the side fixedly connected with extension plate of ceramic shell, the end of extension plate is equipped with round hole, the inside sleeve of round hole is connected with connecting screw, the outer surface sleeve of connecting screw is equipped with gasket;The left and right sides of the top of extension plate are all fixedly connected with fixed column, the outer surface sleeve of fixed column is equipped with connecting pipe.The utility model has the advantages of: when using, extension plate can be fixedly installed on circuit board by connecting screw, the position of thermistor body is limited at this time, it is convenient for the welding of thermistor body and circuit board in later period, avoid that thermistor body displacement occurs when welding;When welding, finger can press on gasket, at this time, thermistor body and circuit board are more closely connected, so that the welding of thermistor body is more stable.

Description

Technical Field

[0001] This utility model relates to the field of thermistor technology, and in particular to a surface mount thermistor. Background Technology

[0002] A thermistor is a type of sensor resistor whose resistance changes with temperature. Based on different temperature coefficients, it is divided into positive temperature coefficient thermistors and negative temperature coefficient thermistors. They both belong to semiconductor devices. Surface mount thermistors are a type of resistive element suitable for high-density surface mounting, and they are characterized by small size, high reliability, and fast response speed.

[0003] Research into existing technologies has revealed that conventional surface-mount thermistors are typically soldered directly onto circuit boards. While this method is not particularly difficult, the thermistors are prone to displacement during soldering, which increases installation speed. Therefore, this invention is proposed. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0005] The purpose of this invention is to overcome the shortcomings of the prior art, solve the problems mentioned in the background art, and provide a surface-mount thermistor.

[0006] The purpose of this utility model is achieved through the following technical solution: a surface mount thermistor, including a ceramic shell, a thermistor body fixedly connected inside the ceramic shell, an extension plate fixedly connected to one side of the ceramic shell, a round hole opened at the end of the extension plate, a connecting screw sleeved inside the round hole, and a washer sleeved on the outer surface of the connecting screw.

[0007] Fixed posts are fixedly connected to the left and right sides of the top of the extension plate. A connecting tube is sleeved on the outer surface of the fixed post. A connecting plate is fixedly connected to the top of the connecting tube. A pad is fixedly connected to the top of the connecting plate. A rubber layer is adhered to the top of the pad. The surface of the rubber layer is provided with anti-slip texture.

[0008] Preferably, the extension plate is a triangular plate with rounded corners at its ends, the extension plate is made of epoxy resin, and the extension plate is embedded in one side of the bottom of the ceramic shell.

[0009] By adopting the above technical solution, the extension board can be fixedly installed on the circuit board with connecting screws, which facilitates the subsequent soldering of the thermistor body to the circuit board.

[0010] Preferably, the diameter of the circular hole is larger than the diameter of the connecting screw, the inner diameter of the washer is larger than the diameter of the connecting screw, and the washer is annular.

[0011] By adopting the above technical solution, the setting of the gasket can prevent the connecting screws from damaging the extension plate.

[0012] Preferably, the fixing post is a cylinder, and there are two fixing posts, which are respectively fused to the center positions of the left and right sides of the top of the extension plate.

[0013] Preferably, the inner diameter of the connecting pipe is adapted to the outer diameter of the fixed column, and there are two connecting pipes. The two connecting pipes are respectively fused to the left and right sides of the bottom of the connecting plate, and the connecting plate is an L-shaped plate.

[0014] By adopting the above technical solution, the connecting plate can be connected to the two fixed posts at the top of the extension plate through two connecting pipes on both sides of the bottom. The pad is located on one side of the connecting plate, and the pad can be installed quickly by the connection method.

[0015] Preferably, the pad is a rectangular plate, which is attached to the top of the ceramic shell. The size of the pad is smaller than the size of the ceramic shell, and the size of the rubber layer is the same as the size of the pad.

[0016] By adopting the above technical solution, the rubber layer can prevent fingers from directly contacting the ceramic shell, and the anti-slip texture can increase the friction between the rubber layer and the fingers.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] 1. This surface mount thermistor has an extension plate. The extension plate is fixedly connected to one side of the ceramic housing. The end of the extension plate has a round hole. A connecting screw is fitted inside the round hole. A washer is fitted on the outer surface of the connecting screw. In use, the extension plate can be fixedly installed on the circuit board by the connecting screw. At this time, the position of the thermistor body is limited, which facilitates the subsequent soldering of the thermistor body to the circuit board and avoids displacement of the thermistor body during soldering.

[0019] 2. This surface-mount thermistor features a pad, a connecting tube fitted onto the outer surface of the mounting post, a connecting plate fixedly connected to the top of the connecting tube, and a pad fixedly connected to the top of the connecting plate. A rubber layer is adhered to the top of the pad, allowing the connecting tube to be fitted onto the mounting post. The pad overlaps the top of the ceramic housing. During soldering, fingers can be pressed against the pad, resulting in a tighter connection between the thermistor and the circuit board, thus ensuring more stable soldering of the thermistor. The pad prevents direct contact between fingers and the ceramic housing. After soldering, the pad can be easily removed, facilitating its use. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the extension plate of this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the pad of this utility model;

[0023] Figure 4 This utility model Figure 3 A schematic diagram of the internal structure at point A.

[0024] In the diagram: 1-Ceramic housing, 2-Thermistor body, 3-Extension plate, 4-Round hole, 5-Connecting screw, 6-Washer, 7-Fixing post, 8-Connecting tube, 9-Connecting plate, 10-Push plate, 11-Rubber layer, 12-Anti-slip texture. Detailed Implementation

[0025] Additional aspects and advantages of this invention will be further set forth in the description which follows in conjunction with the accompanying drawings, and in part will be obvious from the description or may be learned by practice of the invention.

[0026] like Figure 1-2 As shown, a surface mount thermistor includes a ceramic housing 1, a thermistor body 2 installed inside the ceramic housing 1, an extension plate 3 embedded in one side of the ceramic housing 1, a round hole 4 at the end of the extension plate 3, a connecting screw 5 sleeved inside the round hole 4, and a washer 6 sleeved on the outer surface of the connecting screw 5.

[0027] With the above settings, when in use, the extension plate 3 can be fixedly installed on the circuit board by connecting screw 5. At this time, the position of the thermistor body 2 is limited, which facilitates the subsequent soldering of the thermistor body 2 to the circuit board and avoids displacement of the thermistor body 2 during soldering.

[0028] like Figure 1 and Figure 3-4 As shown, fixing posts 7 are welded to the left and right sides of the top of the extension plate 3. A connecting pipe 8 is sleeved on the outer surface of the fixing post 7. A connecting plate 9 is welded to the top of the connecting pipe 8. A pad 10 is welded to the top of the connecting plate 9. A rubber layer 11 is bonded to the top of the pad 10. Anti-slip texture 12 is formed on the surface of the rubber layer 11.

[0029] With the above settings, the connecting tube 8 can be sleeved on the fixed post 7, and the pad 10 can be overlapped on the top of the ceramic shell 1. During welding, fingers can press on the pad 10. At this time, the thermistor body 2 is more tightly connected to the circuit board, which makes the welding of the thermistor body 2 more stable. The pad 10 can prevent fingers from directly contacting the ceramic shell 1. After welding, the pad 10 can be directly removed to achieve the purpose of easy use.

[0030] As a preferred technical solution of this utility model, the extension plate 3 is a triangular plate with rounded corners at the ends. The extension plate 3 is made of epoxy resin and is embedded in one side of the bottom of the ceramic shell 1.

[0031] As a preferred embodiment of this utility model, the diameter of the circular hole 4 is larger than the diameter of the connecting screw 5, the inner diameter of the washer 6 is larger than the diameter of the connecting screw 5, and the washer 6 is annular.

[0032] As a preferred technical solution of this utility model, the fixing column 7 is a cylinder, and there are two fixing columns 7. The two fixing columns 7 are respectively fused to the center positions of the left and right sides of the top of the extension plate 3.

[0033] As a preferred technical solution of this utility model, the inner diameter of the connecting pipe 8 is adapted to the outer diameter of the fixing column 7, and there are two connecting pipes 8. The two connecting pipes 8 are respectively fused to the left and right sides of the bottom of the connecting plate 9, and the connecting plate 9 is an L-shaped plate.

[0034] As a preferred technical solution of this utility model, the pad 10 is a rectangular plate, which is attached to the top of the ceramic shell 1. The size of the pad 10 is smaller than the size of the ceramic shell 1, and the size of the rubber layer 11 is the same as the size of the pad 10.

[0035] The working process of this utility model is as follows:

[0036] S1. The extension plate 3 can be fixedly installed on the circuit board by connecting screw 5. At this time, the position of the thermistor body 2 is limited, which facilitates the subsequent soldering of the thermistor body 2 to the circuit board and avoids displacement of the thermistor body 2 during soldering.

[0037] S2. The connecting pipe 8 can be sleeved on the fixed post 7, and the pad 10 can be overlapped on the top of the ceramic shell 1.

[0038] S3. During soldering, fingers can be pressed on the pad 10. At this time, the thermistor body 2 is more tightly connected to the circuit board, which makes the soldering of the thermistor body 2 more stable.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A surface-mount thermistor, characterized in that: Includes a ceramic shell (1), a thermistor body (2) is fixedly connected inside the ceramic shell (1), an extension plate (3) is fixedly connected to one side of the ceramic shell (1), a round hole (4) is opened at the end of the extension plate (3), a connecting screw (5) is sleeved inside the round hole (4), and a washer (6) is sleeved on the outer surface of the connecting screw (5). The extension plate (3) has fixed posts (7) on both the left and right sides of the top. The outer surface of the fixed posts (7) is fitted with connecting pipes (8). The top of the connecting pipes (8) is fixedly connected with connecting plates (9). The top of the connecting plates (9) is fixedly connected with pads (10). The top of the pads (10) is bonded with rubber layers (11). The surface of the rubber layers (11) is provided with anti-slip textures (12).

2. A surface-mount thermistor according to claim 1, characterized in that: The extension plate (3) is a triangular plate with rounded corners at its ends. The material of the extension plate (3) is epoxy resin. The extension plate (3) is embedded in one side of the bottom of the ceramic shell (1).

3. A surface-mount thermistor according to claim 1, characterized in that: The diameter of the circular hole (4) is larger than the diameter of the connecting screw (5), the inner diameter of the washer (6) is larger than the diameter of the connecting screw (5), and the washer (6) is annular.

4. A surface-mount thermistor according to claim 1, characterized in that: The fixing column (7) is a cylinder, and there are two fixing columns (7). The two fixing columns (7) are respectively fused to the center positions of the left and right sides of the top of the extension plate (3).

5. A surface-mount thermistor according to claim 1, characterized in that: The inner diameter of the connecting pipe (8) is adapted to the outer diameter of the fixed column (7). There are two connecting pipes (8), which are respectively fused to the left and right sides of the bottom of the connecting plate (9). The connecting plate (9) is an L-shaped plate.

6. A surface-mount thermistor according to claim 1, characterized in that: The pad (10) is a rectangular plate, which is attached to the top of the ceramic shell (1). The size of the pad (10) is smaller than that of the ceramic shell (1), and the size of the rubber layer (11) is the same as that of the pad (10).

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