A waterproof temperature sensor

Abstract

This application provides a waterproof temperature sensor, including a mounting base, a sensing body, and wires extending from within the sensing body. The sensing body includes a thermistor, a waterproof layer, and a protective shell. The protective shell is fitted over the thermistor, and the waterproof layer is disposed inside the protective shell and fills the gap between the protective shell and the thermistor. One end of the thermistor is fixedly connected to the mounting base, and the other end extends at least partially out of the protective shell with an adjustable extension length. One end of the protective shell is threaded to the mounting base, and the other end has a sealing ring that fits tightly against the thermistor. By providing a waterproof layer and a protective shell around the thermistor, the waterproof performance of the thermistor is effectively improved. The sealing ring at one end of the protective shell is in close contact with the thermistor, preventing liquid from entering the sensor.

Description

Technical Field

[0001] The present application relates to a sensor, and more particularly to a waterproof temperature sensor. Background Art

[0002] Temperature sensor refers to a sensor that can detect temperature and convert it into a usable output signal. It is one of the most commonly used types of sensors. Temperature sensors are the core part of temperature measuring instruments. There are many varieties. According to the sensor material and electronic component characteristics, they are divided into two categories: thermal resistors and thermocouples. The working principle of thermal resistor temperature sensors is that as the temperature of metal changes, its resistance value also changes. For different metals, the resistance value changes differently for every degree of temperature change, and the resistance value can be directly used as an output signal. Thermistors have the advantages of small size and high stability, and will not cause heat load. Therefore, thermistor type temperature sensors are widely used, but they are easily affected by high humidity environments, resulting in a shortened lifespan. Summary of the invention

[0003] The present application provides a waterproof temperature sensor.

[0004] Specifically, the present application provides a waterproof temperature sensor, comprising a mounting seat, a sensing body and a wire led out from the sensing body; the sensing body comprises a thermistor, a waterproof layer and a protective shell; the protective shell is sleeved on the outside of the thermistor, the waterproof layer is arranged on the inside of the protective shell and fills the gap between the protective shell and the thermistor; one end of the thermistor is fixedly connected to the mounting seat, and the other end at least partially extends out of the protective shell and the extension length is adjustable; one end of the protective shell is threadedly connected to the mounting seat, and the other end is provided with a sealing ring that is tightly attached to the thermistor.

[0005] Furthermore, a groove is provided on one side of the mounting seat, an internal thread is provided in the groove, and an external thread matching the internal thread is provided at one end of the protective shell.

[0006] Furthermore, a cylindrical protrusion is provided on one side of the mounting seat, a thread is provided on the protrusion, and an internal thread matching the external thread is provided at one end of the protective shell.

[0007] Furthermore, a through hole for the wire to pass through is provided on the other side of the mounting seat, and the through hole is filled with waterproof glue.

[0008] Furthermore, the waterproof layer is provided with a limiting groove, and the protective shell is provided with a limiting block cooperating with the limiting groove.

[0009] Furthermore, at least one of the internal thread and the external thread is a locking thread.

[0010] The beneficial effects of the present application are: by arranging a waterproof layer and a protective shell on the periphery of the thermistor, the waterproof performance of the thermistor is effectively improved, and the sealing ring at one end of the protective shell is in close contact with the thermistor to prevent liquid from entering the sensor. On the other hand, the protective shell is connected to the mounting seat by threads, and the length of the thermistor extending out of the protective shell can be adjusted by adjusting the length of the thread engagement between the protective shell and the mounting seat, thereby improving the applicability of the temperature sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of the waterproof temperature sensor of this application;

[0012] Figure 2 yes Figure 1 Schematic diagram of the explosion structure of the waterproof temperature sensor;

[0013] Figure 3 yes Figure 1 Schematic diagram of the cross-sectional structure of the waterproof temperature sensor;

[0014] Figure 4 Schematic diagram of the cross-sectional structure of a waterproof temperature sensor in another embodiment.

[0015] Figure numerals: 100, mounting seat; 200, sensing body; 210, thermistor; 220, waterproof layer; 221, limiting groove; 230, protective shell; 231, limiting block; 232, external thread; 233, sealing ring; 300, wire. DETAILED DESCRIPTION

[0016] Here, exemplary embodiments will be described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application.

[0017] The terms used in this application are only for the purpose of describing specific embodiments and are not intended to limit this application. Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, similar words such as "one" or "one" do not indicate a quantity limit, but indicate that there is at least one. "Multiple" or "several" means two and more than two. Unless otherwise specified, similar words such as "front", "rear", "lower" and / or "upper" are only for the convenience of explanation and are not limited to a position or a spatial orientation. Similar words such as "include" or "include" mean that the elements or objects appearing in front of "include" or "include" include the elements or objects listed after "include" or "include" and their equivalents, and do not exclude other elements or objects. Similar words such as "connect" or "connected" are not limited to physical or mechanical connections, and can include electrical connections, whether direct or indirect. The singular forms "a", "said" and "the" used in this specification and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0018] Embodiment 1

[0019] Please combine Figures 1 to 3 The present application provides a waterproof temperature sensor, comprising a mounting seat 100, a sensing body 200 and a wire 300 led out from the sensing body 200; the sensing body 200 comprises a thermistor 210, a waterproof layer 220 and a protective shell 230; the protective shell 230 is sleeved on the outside of the thermistor 210, the waterproof layer 220 is arranged on the inner side of the protective shell 230 and fills the gap between the protective shell 230 and the thermistor 210; one end of the thermistor 210 is fixedly connected to the mounting seat 100, and the other end at least partially extends out of the protective shell 230 and the extension length is adjustable; one end of the protective shell 230 is threadedly connected to the mounting seat 100, and the other end is provided with a sealing ring 233 that is tightly attached to the thermistor 210. The waterproof layer 220 is provided with a limiting groove 221, and the protective shell 230 is provided with a limiting block 231. When the waterproof layer 220 is installed in the protective shell 230, the limiting block 231 cooperates with the limiting groove 221 to prevent the waterproof layer 220 from being out of place and thus affecting the waterproof performance of the sensor.

[0020] Based on the above, please refer to Figure 2 and Figure 3, a groove is provided on one side of the mounting seat 100, and an internal thread is provided in the groove. An external thread 232 that matches the internal thread is provided at one end of the protective shell 230. In actual use, the thread engagement length between the protective shell 230 and the mounting seat 100 can be adjusted according to needs, thereby adjusting the length of the thermistor 210 extending out of the protective shell 230. In this embodiment, the external thread 232 on the protective shell 230 is a locking thread. In another embodiment, the internal thread of the mounting seat is a locking thread.

[0021] On the basis of the above, a through hole is provided on the other side of the mounting seat 100 for the wire 300 to pass through, and the through hole is filled with waterproof glue to prevent liquid from entering the sensor from the wire outlet.

[0022] Embodiment 2

[0023] The difference between this embodiment and the first embodiment is that the threaded cooperation mode between the mounting seat 100 and the protective shell 230 is different. Specifically, a cylindrical protrusion is provided on one side of the mounting seat 100, and a thread is provided on the protrusion. One end of the protective shell 230 is provided with an internal thread that cooperates with the external thread.

[0024] The above is only a preferred embodiment of the present application and does not constitute any form of limitation to the present application. Although the present application has been disclosed as a preferred embodiment as above, it is not intended to limit the present application. Any technician familiar with the profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present application. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application still falls within the scope of the technical solution of the present application.

Claims

1. A waterproof temperature sensor, characterized in that: It comprises a mounting seat, a sensing body and a wire led out of the sensing body; the sensing body comprises a thermistor, a waterproof layer and a protective shell; the protective shell is sleeved on the outside of the thermistor, the waterproof layer is arranged on the inside of the protective shell and fills the gap between the protective shell and the thermistor; one end of the thermistor is fixedly connected to the mounting seat, and the other end at least partially extends out of the protective shell and the extension length is adjustable; one end of the protective shell is threadedly connected to the mounting seat, and the other end is provided with a sealing ring tightly attached to the thermistor.

2. A waterproof temperature sensor according to claim 1, characterized in that: A groove is provided on one side of the mounting seat, an internal thread is provided in the groove, and an external thread matching the internal thread is provided at one end of the protective shell.

3. A waterproof temperature sensor according to claim 1, characterized in that: A cylindrical protrusion is provided on one side of the mounting seat, an external thread is provided on the protrusion, and an internal thread matching the external thread is provided at one end of the protective shell.

4. A waterproof temperature sensor according to claim 2 or 3, characterized in that: A through hole is provided on the other side of the mounting seat for the wire to pass through, and the through hole is filled with waterproof glue.

5. The waterproof temperature sensor according to claim 1, characterized in that: The waterproof layer is provided with a limiting groove, and the protective shell is provided with a limiting block matched with the limiting groove.

6. A waterproof temperature sensor according to claim 2 or 3, characterized in that: At least one of the internal thread and the external thread is a locking thread.

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