Surface-mounted resistor of industrial motor controller

Abstract

The utility model provides a surface-mounted resistor of an industrial motor controller, which comprises a device main body, a cavity is arranged in the device main body, the inner wall of the device main body is connected with an insulating barrier plate, the outer walls of the two sides of the insulating barrier plate are connected with leads, and the outer wall of one end of each lead is connected with a thermistor. According to the surface-mounted resistor of the industrial motor controller, the positioning groove in the outer wall of the top end of the insulating barrier plate is matched with the clamping block on the outer wall of the bottom of the connecting rod, so that the insulating barrier plate, the lead and the thermistor are fixed; and meanwhile, the two lead wires are separated by virtue of the insulating barrier plate, so that the situation that the two lead wires are short-circuited when the device runs is prevented.

Description

Technical Field

[0001] This utility model relates to the field of temperature sensor devices, specifically disclosing a surface mount resistor for an industrial motor controller. Background Technology

[0002] NTC (Negative Temperature Coefficient) thermistors are electronic components widely used in temperature sensing. Their resistance decreases rapidly with increasing temperature, exhibiting fast response and high sensitivity. They are commonly used for temperature monitoring in industrial motor controllers and other fields. Traditional NTC temperature sensors typically consist of a mixture of two to three metal oxides sintered in a high-temperature furnace to form a dense ceramic structure. They offer flexible dimensions, ranging from as small as 0.010 inches, making them suitable for various applications.

[0003] However, existing NTC thermistors are typically fixed directly inside the device's housing. When the thermistor or its connecting leads fail, maintenance personnel cannot quickly disassemble and replace the damaged components, often requiring the replacement of the entire sensor device, significantly increasing maintenance costs and time. Furthermore, existing designs are inadequate in lead insulation and short-circuit protection, making them susceptible to leakage or short circuits that could affect the device's stability and safety, limiting their application in high-reliability scenarios. Additionally, the fact that existing NTC temperature sensors often have the thermistor directly fixed inside the housing means that when the thermistor and its connecting leads fail, rendering the NTC temperature sensor unusable, personnel cannot quickly remove and replace the damaged thermistor and its connecting leads. To save time, the entire device must be replaced, further increasing maintenance costs. Therefore, we propose a surface-mount resistor for industrial motor controllers. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies in the prior art, this application aims to provide a surface mount resistor for an industrial motor controller, including a device body, a cavity inside the device body, an insulating barrier plate connected to the inner wall of the device body, leads connected to both outer walls of the insulating barrier plate, and a thermistor connected to one end of the outer wall of the leads.

[0005] Preferably, an insulating ring block is connected to the outer wall of one end of the main body of the device.

[0006] Preferably, a thermally conductive sleeve is connected to the outer wall of one end of the insulating barrier plate, the thermally conductive sleeve contains the thermistor, and the interior of the thermally conductive sleeve is filled with a thermally conductive filler.

[0007] Preferably, the top outer wall of the insulating barrier plate is provided with a positioning groove.

[0008] Preferably, the inner wall of the main body of the device is provided with a storage groove.

[0009] Preferably, a connecting rod is slidably connected to the inner wall of the main body of the device, a lever is connected to the outer wall of the top end of the connecting rod, a locking block is connected to the outer wall of the bottom end of the connecting rod, a spring is connected to the outer wall of the top end of the locking block, and the outer wall of the other end of the spring is connected to the inner wall of the storage groove.

[0010] Beneficial effects:

[0011] 1. The surface mount resistor of this industrial motor controller uses a positioning groove on the top outer wall of the insulating barrier plate to cooperate with a locking block on the bottom outer wall of the connecting rod to fix the insulating barrier plate, the lead wires and the thermistor. This prevents the device from failing to operate due to unstable fixing of the replaced parts. At the same time, the insulating barrier plate separates the two lead wires to prevent short circuits when the device is running. Attached Figure Description

[0012] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a side view of the structure of this utility model;

[0015] Figure 3 This is a cross-sectional view of the structure of this utility model.

[0016] In the diagram: 1. Main body of the device; 2. Thermistor; 3. Lead wire; 4. Thermally conductive sheath; 5. Thermally conductive filler; 6. Insulating barrier plate; 7. Positioning groove; 8. Storage groove; 9. Connecting rod; 10. Toggle block; 11. Spring; 12. Locking block; 13. Insulating ring block. Detailed Implementation

[0017] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0018] The accompanying drawings in this utility model embodiment: different types of cross-sectional lines in the drawings are not labeled according to national standards, nor do they specify the material requirements of the components. They are used to distinguish the cross-sectional views of the components in the drawings.

[0019] Please see Figure 1-3A surface mount resistor for an industrial motor controller includes a device body 1, with a cavity inside the device body 1. An insulating barrier plate 6 is connected to the inner wall of the device body 1, and leads 3 are connected to both outer walls of the insulating barrier plate 6. A thermistor 2 is connected to the outer wall of one end of the leads 3.

[0020] An insulating ring block 13 is connected to one end of the outer wall of the main body 1. The insulating ring block 13 on one end of the outer wall of the main body 1 prevents leakage from the two leads 3 from affecting the main body 1.

[0021] The insulating barrier plate 6 has a thermally conductive sleeve 4 attached to one end of its outer wall. The thermally conductive sleeve 4 encloses the thermistor 2, and its interior is filled with a thermally conductive filler 5. Through the thermally conductive sleeve 4 and the thermally conductive filler 5, the external temperature is accurately transferred to the thermistor 2, allowing it to respond to the external temperature to the maximum extent. Simultaneously, the outermost thermally conductive sleeve 4 also protects the thermistor 2.

[0022] The insulating barrier plate 6 has a positioning groove 7 on its top outer wall. The positioning groove 7 serves to assist in fixing the plate.

[0023] The inner wall of the main body 1 of the device has a storage groove 8. The storage groove 8 serves to store the spring 11.

[0024] The inner wall of the main body 1 of the device is slidably connected to a connecting rod 9, the top outer wall of the connecting rod 9 is connected to a lever 10, the bottom outer wall of the connecting rod 9 is connected to a locking block 12, the top outer wall of the locking block 12 is connected to a spring 11, and the other end of the outer wall of the spring 11 is connected to the inner wall of the storage groove 8. When the thermistor 2 and its connected lead 3 malfunction, the connecting rod 9 and the locking block 12 are moved upward by the lever 10. At this time, the spring 11 at the top of the locking block 12 is compressed in the receiving groove 8. Then, a new thermistor 2 is replaced. After the thermistor 2 is replaced, the insulating barrier plate 6, which is connected to the thermistor 2 through the thermally conductive filler 5, enters the device body 1. At this time, the lever 10 is released, and the elastic force accumulated when the spring 11 is compressed drives the connecting rod 9 and the locking block 12 to move downward. The locking block 12 is finally inserted into the positioning groove 7 at the top of the insulating barrier plate 6, thereby fixing the position of the insulating barrier plate 6, the thermistor 2 and the lead 3 and making the device start operating.

[0025] It should be noted that this utility model provides a surface mount resistor for an industrial motor controller, the working principle of which is as follows:

[0026] Temperature Sensing and Conduction: A thermistor 2 is installed inside the main body of the device. The thermistor 2 is encased in a thermally conductive sheath 4, which is filled with a thermally conductive filler 5. The temperature of the external environment is efficiently and accurately transferred to the thermistor 2 through the thermally conductive sheath 4 and the thermally conductive filler 5. The thermistor 2 utilizes the characteristic that its resistance decreases rapidly with increasing temperature to sense changes in ambient temperature in real time and converts the temperature information into an electrical signal output, thereby achieving high-precision temperature measurement. The thermally conductive sheath 4 ensures efficient heat conduction while also providing physical protection for the thermistor 2, extending its service life.

[0027] Insulation and Safety Protection: An insulating ring block 13 is provided on the outer wall of one end of the main body of the device to isolate the leads and prevent damage to the main body of the device due to leakage of the leads. The thermistor 2 is connected to the external circuit through the leads, and an insulating barrier plate 6 is set between the leads to effectively prevent short circuits caused by lead contact during operation, thereby improving the safety and stability of the device.

[0028] The structural design facilitates maintenance: The inner wall of the main body of the device has a storage groove 8, in which a spring 11, a connecting rod 9, and a locking block 12 are installed. The locking block 12 is connected to the top lever 10 via the connecting rod 9. A positioning groove 7 is formed on the top of the insulating barrier plate 6, which cooperates with the locking block 12 for fixation. When the thermistor 2 or the lead wire 3 malfunctions and needs replacement, the upward movement of the lever 10 moves the connecting rod 9 and the locking block 12, compressing the spring 11 within the storage groove 8 and releasing the insulating barrier plate 6. After replacing the thermistor 2 and related components, the insulating barrier plate 6 is reinserted into the main body 1, the lever 10 is released, the spring 11 returns to its original position, and the locking block 12 is inserted into the positioning groove 7, quickly fixing the insulating barrier plate 6, the thermistor 2, and the lead wire 3, ensuring the device returns to normal operation.

[0029] This device achieves precise temperature conduction through a thermally conductive sheath and thermally conductive filler, ensures electrical safety through insulating rings and insulating barriers, and enables quick assembly and disassembly through a spring-locking mechanism. It has the advantages of high measurement accuracy, strong safety, and convenient maintenance, and is suitable for the temperature monitoring needs of industrial motor controllers.

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A surface mount resistor for an industrial motor controller, comprising a main body (1), characterized in that: The device body (1) has an internal cavity. An insulating barrier plate (6) is connected to the inner wall of the device body (1). Lead wires (3) are connected to both outer walls of the insulating barrier plate (6). A thermistor (2) is connected to one end of the lead wire (3).

2. The surface mount resistor for an industrial motor controller according to claim 1, characterized in that: An insulating ring block (13) is connected to one end of the outer wall of the main body (1) of the device.

3. The surface mount resistor for an industrial motor controller according to claim 1, characterized in that: One end of the insulating barrier plate (6) is connected to a thermally conductive sleeve (4), which contains the thermistor (2), and the interior of the thermally conductive sleeve (4) is filled with a thermally conductive filler (5).

4. The surface mount resistor for an industrial motor controller according to claim 1, characterized in that: The top outer wall of the insulating barrier plate (6) is provided with a positioning groove (7).

5. A surface mount resistor for an industrial motor controller according to claim 1, characterized in that: The inner wall of the main body (1) of the device is provided with a storage groove (8).

6. A surface mount resistor for an industrial motor controller according to claim 5, characterized in that: A connecting rod (9) is slidably connected to the inner wall of the main body (1) of the device. A lever (10) is connected to the outer wall of the top end of the connecting rod (9). A locking block (12) is connected to the outer wall of the bottom end of the connecting rod (9). A spring (11) is connected to the outer wall of the top end of the locking block (12). The outer wall of the other end of the spring (11) is connected to the inner wall of the storage groove (8).

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