Temperature sensor convenient for replacing temperature measuring assembly

Abstract

According to the temperature sensor convenient for replacing the temperature measuring assembly, the temperature measuring assembly and other parts of the temperature sensor are independently arranged, the thermistor can be directly subjected to injection molding production and then subjected to screening test, the screening test efficiency is improved, and even if the thermistor fails, only a small number of injection molding parts are lost; the resource waste caused by the invalidation of the hot surface resistor is effectively reduced; in the subsequent maintenance process of the temperature sensor, the temperature measuring assembly can be independently replaced, and the maintenance cost is reduced. The utility model has the advantages that the temperature measuring assembly and other parts of the temperature sensor are independently arranged, the thermistor can be directly subjected to injection molding production and then subjected to screening test, the screening test efficiency is improved, only a small number of injection molding parts are lost even if the thermistor fails, and the resource waste caused by the failure of the thermistor is effectively reduced; in the subsequent maintenance process of the temperature sensor, the temperature measuring assembly can be independently replaced, and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of temperature sensor technology, and in particular to a temperature sensor that is easy to replace. Background Technology

[0002] Currently, thermistors and housings in temperature sensors are typically integrated. However, thermistors manufactured in the industry are typically produced using industrial-grade methods, meaning their failure rate cannot be guaranteed. Thermistors are usually purchased in large quantities, and given their small size, individually screening and testing each thermistor would be extremely time-consuming and labor-intensive. Conversely, if the temperature sensor is manufactured first and then tested, the entire sensor might be rendered unusable due to thermistor failure, resulting in significant resource waste. Furthermore, during subsequent maintenance, if thermistor fails, the entire temperature sensor needs to be replaced, leading to high maintenance costs. Summary of the Invention

[0003] This invention primarily addresses the aforementioned problems by providing a temperature sensor with an easily replaceable temperature sensing component. This allows the temperature sensing component to be independently configured from other parts of the temperature sensor, enabling direct injection molding of the thermistors followed by screening and testing, thus improving screening and testing efficiency. Even if thermistor failure occurs, only a small number of injection-molded parts are lost, effectively reducing resource waste caused by thermistor failure. Furthermore, the temperature sensing component can be replaced separately during subsequent maintenance of the temperature sensor, reducing maintenance costs.

[0004] The technical solution adopted by this utility model to solve its technical problem is a temperature sensor with an easy-to-replace temperature measuring component, including a limiting sleeve, a temperature measuring component, a spring, and a mounting plate. The mounting plate has a first protrusion in the middle, the limiting sleeve is fitted on the first protrusion, the temperature measuring component is disposed in the limiting sleeve and the detection end of the temperature measuring component extends out of the limiting sleeve, the temperature measuring component includes a temperature measuring element, a wire, an element housing, and a plug-in post, the element housing is injection molded on the temperature measuring element, one end of the wire is connected to the temperature measuring element, and the other end of the wire passes through the plug-in post, the plug-in post passes through the first protrusion, and the spring is disposed between the element housing and the first protrusion.

[0005] As a preferred embodiment of the above solution, a second boss is provided at the center of the first boss, and a through hole for the insertion post is provided at the center of the second boss.

[0006] As a preferred embodiment of the above solution, the limiting sleeve is hollow inside and has a first opening and a second opening distributed at both ends. The first opening is fitted onto the first protrusion, and the diameter of the second opening is smaller than the inner diameter of the hollow sleeve.

[0007] As a preferred embodiment of the above solution, the component housing includes a probe and a limiting body connected in sequence. The limiting body is located in a limiting sleeve, the temperature measuring element is disposed on the end face of the probe, and the probe extends out of the limiting sleeve through the second opening.

[0008] As a preferred embodiment of the above solution, the end of the limiting body away from the detector is provided with a columnar body, the first end of the spring is sleeved on the columnar body, and the second end of the spring is sleeved on the second protrusion.

[0009] As a preferred embodiment of the above solution, the limiting sleeve is provided with a first sealing ring on its side.

[0010] As a preferred embodiment of the above solution, a second sealing ring is provided around the first boss on the mounting plate.

[0011] As a preferred embodiment of the above solution, the mounting plate is provided with a plurality of mounting holes surrounding the first boss.

[0012] The advantages of this invention are: the temperature measuring component is set independently from other components of the temperature sensor, allowing thermistors to be directly injection molded and then screened for testing, thus improving screening and testing efficiency. Even if thermistor failure occurs, only a small number of injection molded parts are lost, effectively reducing resource waste caused by thermistor failure. Furthermore, the temperature measuring component can be replaced separately during subsequent maintenance of the temperature sensor, reducing maintenance costs. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the temperature sensor.

[0014] Figure 2 This is a schematic diagram of the exploded structure of a temperature sensor.

[0015] Figure 3 This is a cross-sectional view of the temperature sensor.

[0016] 1-Mounting pressure plate 2-Limiting sleeve 3-Temperature measuring component 4-Spring 11-Mounting hole 12-Second sealing ring 13-First boss 14-Second boss 15-Through hole 21-First sealing ring 31-Temperature measuring element 32-Element housing 33-Wire 34-Plug-in post. Detailed Implementation

[0017] The technical solution of this utility model will be further described below through embodiments and in conjunction with the accompanying drawings.

[0018] Example:

[0019] This embodiment provides a temperature sensor that facilitates the replacement of temperature sensing components, such as... Figures 1 to 3As shown, the device includes a limiting sleeve 2, a temperature measuring component 3, a spring 4, and a mounting plate 1. The mounting plate 1 has a first protrusion 13 in the middle. The limiting sleeve 2 is fitted onto the first protrusion 13. The temperature measuring component 3 is located in the limiting sleeve 2, and the detection end of the temperature measuring component 3 extends out of the limiting sleeve 2. The temperature measuring component 3 includes a temperature measuring element 31, a wire 33, an element housing 32, and a plug-in post 34. The element housing 32 is injection molded onto the temperature measuring element 31. One end of the wire 33 is connected to the temperature measuring element 31, and the other end of the wire 33 passes through the plug-in post 34. The plug-in post 34 passes through the first protrusion 13. The spring 4 is located between the element housing 32 and the first protrusion 13.

[0020] The limiting sleeve 2 has a first sealing ring 21 on its side. The limiting sleeve 2 is hollow inside and has a first opening and a second opening at both ends. The first opening is fitted onto the first boss 13. A second boss 14 is provided in the center of the first boss 13. A through hole 15 for the insertion post 34 is provided in the center of the second boss 14. The second end of the spring 4 is fitted onto the second boss 14 and is located in the gap between the side wall of the second boss and the inner wall of the limiting sleeve 2.

[0021] The diameter of the second opening of the limiting sleeve 2 is smaller than the inner diameter of the hollow part inside the limiting sleeve. Specifically, the inner diameter of the hollow part inside the limiting sleeve gradually decreases near the second opening to form a frustum-shaped limiting section. The component housing 32 includes a probe and a limiting body connected in sequence. The probe is cylindrical and the limiting body is frustum-shaped. The limiting body is located in the limiting sleeve and matches the limiting section. The temperature sensing element 31 is disposed on the end face of the probe. The probe extends out of the limiting sleeve 2 through the second opening. The limiting body abuts against the second opening. A columnar body is provided at the end of the limiting body away from the probe. The first end of the spring is sleeved on the columnar body. The first end of the spring 4 is located in the gap between the side wall of the columnar body and the limiting sleeve 2.

[0022] In addition, a second sealing ring 12 is provided around the first boss 13 on the mounting plate 1, and a plurality of mounting holes 11 are provided around the first boss 13 on the mounting plate 1, with the mounting holes 11 located outside the second sealing ring 12.

[0023] In this embodiment, the temperature sensor is manufactured by first injection molding a housing onto the temperature sensing element. Workers then inspect and screen the temperature sensing elements within the housing. Because the housing is much larger than the sensing element, it is easy to handle, and the housing has built-in wires, allowing for rapid inspection and screening. This improves efficiency, and even if a thermistor fails, only a small number of injection-molded parts are lost, effectively reducing resource waste caused by thermistor failure. During maintenance after the temperature sensor is put into use, the temperature sensing component can be replaced individually without replacing the entire sensor, reducing maintenance costs.

[0024] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A temperature sensor with easily replaceable temperature sensing components, characterized in that: The device includes a limiting sleeve, a temperature measuring component, a spring, and a mounting plate. The mounting plate has a first protrusion in the middle. The limiting sleeve is fitted onto the first protrusion. The temperature measuring component is located in the limiting sleeve, with its detection end extending out of the limiting sleeve. The temperature measuring component includes a temperature measuring element, a wire, an element housing, and a plug-in post. The element housing is injection molded onto the temperature measuring element. One end of the wire is connected to the temperature measuring element, and the other end of the wire passes through the plug-in post. The plug-in post passes through the first protrusion. The spring is located between the element housing and the first protrusion.

2. The temperature sensor with easily replaceable temperature sensing components according to claim 1, characterized in that: The first boss has a second boss at its center, and the second boss has a through hole at its center for the insertion post.

3. The temperature sensor with easily replaceable temperature sensing components according to claim 2, characterized in that: The limiting sleeve is hollow inside and has a first opening and a second opening distributed at both ends. The first opening is fitted onto the first protrusion, and the diameter of the second opening is smaller than the inner diameter of the hollow sleeve.

4. The temperature sensor with easily replaceable temperature sensing components according to claim 3, characterized in that: The component housing includes a probe and a limiting body connected in sequence. The limiting body is located in a limiting sleeve. The temperature measuring element is disposed on the end face of the probe. The probe extends out of the limiting sleeve through the second opening.

5. The temperature sensor with easily replaceable temperature sensing components according to claim 4, characterized in that: The limiting body has a columnar body at the end away from the detector, the first end of the spring is sleeved on the columnar body, and the second end of the spring is sleeved on the second protrusion.

6. The temperature sensor with easily replaceable temperature sensing components according to claim 1, characterized in that: The limiting sleeve is provided with a first sealing ring on its side.

7. The temperature sensor with easily replaceable temperature sensing components according to claim 1, characterized in that: A second sealing ring is provided around the first boss on the mounting plate.

8. The temperature sensor with easily replaceable temperature sensing components according to claim 1, characterized in that: The mounting plate has several mounting holes arranged around the first boss.

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