Environment temperature compensation sensor

Abstract

An environment temperature compensation sensor comprises a thermistor and a wire, one end of the wire is provided with two first leading-out pins, the first leading-out pins are connected with corresponding pins of the thermistor, the environment temperature compensation sensor further comprises a metal shell and a buffering silicon rubber sleeve, and the metal shell is provided with a containing cavity with an opening in the front side. The buffer silicon rubber case is arranged in the accommodating cavity, the interior of the buffer silicon rubber case is arranged in a through manner, the buffer silicon rubber case wraps the thermistor and the joint of the first lead-out pin and the pin, and filling layers are also poured between the accommodating cavity and the buffer silicon rubber case and between the buffer silicon rubber case and the thermistor. The utility model has the advantages of long service life, safer use, better protection effect and simple structure.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, in particular to an environmental temperature compensation sensor. Background Art

[0002] Temperature sensors are used as monitoring tools in the boxes of common household electrical appliances such as dishwashers, water heaters, rice cooker covers, microwave ovens, and air fryers. They are exposed to water and steam in a high temperature, high humidity, and high and low temperature environment with frequent alternations for a long time, which poses a risk of leakage, and therefore has high requirements for electrical safety. At present, temperature sensors will add a grounding wire to meet electrical requirements, but this method makes the grounding wire connection cumbersome and not completely reliable. The packaging shells made of other materials such as plastic shells can themselves play a role in strengthening insulation, but as they age on electrical appliances, and as they have problems with their own structural design and material strength defects, there is a risk of damage and water seepage during use, causing the sensor to fail. Utility Model Content

[0003] In view of the shortcomings of the above-mentioned prior art, the purpose of the utility model is to provide an environmental temperature compensation sensor with a simple structure, a long service life, safer use and better protection effect.

[0004] The utility model adopts a technical solution to solve its technical problem. It is an ambient temperature compensation sensor, including a thermistor and a wire. One end of the wire is provided with two first lead pins, and the first lead pins are connected to the corresponding pins of the thermistor. It also includes a metal shell and a buffer silicone sleeve. The metal shell is provided with a accommodating cavity with a front opening. The buffer silicone sleeve is arranged in the accommodating cavity and is through-set inside. The buffer silicone sleeve covers the thermistor and the connection between the first lead pin and the pin. A filling layer is also poured between the accommodating cavity and the buffer silicone sleeve, and between the buffer silicone sleeve and the thermistor.

[0005] The advantages of adopting the above technical solution are as follows: by setting up a metal shell and a buffer silicone sleeve, and encapsulating the thermistor in the accommodating cavity, anti-collision protection for the thermistor is formed, and a filling layer with a wall thickness that meets the requirements of enhanced insulation is provided between the thermistor, the buffer silicone sleeve and the metal shell. It also has high insulation and high pressure resistance while ensuring thermal conductivity, meeting the requirements of enhanced insulation electronic components, so that the metal shell will not conduct electricity even if it is in direct contact with water during operation, and can form a good grounding protection to protect the thermistor without the risk of leakage, and the traditional grounding wire can be eliminated. Therefore, the product has a long service life, is safer to use, has better protection effect, and has a simple structure.

[0006] Furthermore, the wire portion is located in the accommodating cavity, and at least one arc convex portion is provided on the opposite wall surfaces at the opening of the accommodating cavity, and the arc convex portion is recessed into the accommodating cavity, and the arc convex portion tightens the wire.

[0007] The advantages of adopting the above technical solution are as follows: by providing a convex arc portion at the opening of the accommodating cavity, the metal shell can achieve good position fixing and protection for the wire and thermistor, which is also beneficial to the pouring of the filling layer, and the molding is simple and the structural design is reasonable.

[0008] Furthermore, the other end of the wire is provided with two second pins, and the ends of the second pins are connected to a plug with corresponding terminals.

[0009] Advantages of adopting the above technical solution: The setting of the plug realizes the effective fixation of the sensor, and compared with the welding method, the installation and disassembly is also more convenient.

[0010] Furthermore, the metal shell is a stainless steel metal shell.

[0011] The advantages of adopting the above technical solution are: the stainless steel metal shell is used, so that the sensor has higher impact resistance and strength. During use, the internal thermistor will not be deformed or damaged due to impact.

[0012] Furthermore, the filling layer is a thermal conductive silicone grease layer or an epoxy resin layer.

[0013] Advantages of adopting the above technical solution: thermal conductive silicone grease or epoxy resin is used as the filling material, and the filled sensor has good thermal conductivity and sealing effects, is safer to use, and has a longer service life.

[0014] Furthermore, the longitudinal section of the metal shell is U-shaped, and the shape of the accommodating cavity is consistent with the shape of the metal shell.

[0015] The advantages of adopting the above technical solution are: under the premise of ensuring the impact resistance of the metal shell, after the thermistor with the buffer silicone sleeve is placed in place, it maintains an appropriate distance from the wall surface of the concave part of the accommodating cavity, which is conducive to the full filling of the filling layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 for Figure 1 Enlarged view of part A in the middle.

[0018] In the figure: 1-thermistor, 2-conducting wire, 3-first pin, 4-metal shell, 5-buffering silicone sleeve, 6-accommodating cavity, 7-filling layer, 8-arc convex part, 9-second pin, 10-plug. DETAILED DESCRIPTION

[0019] In order to more clearly illustrate the embodiments of the utility model and / or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work. In addition, the orientation only represents the relative position relationship between the components, not the absolute position relationship.

[0020] See also Figure 1 to Figure 2 As shown, an environmental temperature compensation sensor includes a thermistor 1 and a wire 2, one end of the wire 2 is provided with two first lead pins 3, the first lead pins 3 are connected to the corresponding pins of the thermistor 1, more specifically, the first lead pins 3 are welded to the corresponding pins of the thermistor 1, and also includes a metal shell 4 and a buffer silicone sleeve 5, the metal shell 4 is provided with a accommodating cavity 6 with a front opening, the buffer silicone sleeve 5 is arranged in the accommodating cavity 6 and the interior is through-type, the buffer silicone sleeve 5 forms a covering for the thermistor 1 and the connection between the first lead pin 3 and the pin, and a filling layer 7 is poured between the accommodating cavity 6 and the buffer silicone sleeve 5, as well as between the buffer silicone sleeve 5 and the thermistor 1, because the interior of the buffer silicone sleeve 5 is through-type, that is, the interior of the buffer silicone sleeve 5 is connected to the accommodating cavity 6, when the filling layer 7 is poured through the front opening, As the filling layer 7 flows, effective filling can be formed between the accommodating cavity 6 and the buffer silicone sleeve 5, and between the buffer silicone sleeve 5 and the thermistor 1. In the above structure, the metal shell 4 and the buffer silicone sleeve 5 are set, and the thermistor 1 is encapsulated in the accommodating cavity 6 to form anti-collision protection for the thermistor 1, and a filling layer 7 with a wall thickness that meets the requirements of enhanced insulation is provided between the thermistor 1, the buffer silicone sleeve 5 and the metal shell 4. While ensuring the thermal conductivity, it also has high insulation and high pressure resistance, meeting the requirements of enhanced insulation electronic components, so that the metal shell 4 will not have electrical conduction even if it is in direct contact with water during operation, and can form a good grounding protection to protect the thermistor 1, without the risk of leakage, and the traditional grounding wire can be eliminated. Therefore, the product has a long service life, is safer to use, has better protection effect, and has a simple structure.

[0021] In this embodiment, one end portion of the wire 2 is located in the accommodating cavity 6, and at least one arc convex portion 8 is provided on the relative wall surfaces at the opening of the accommodating cavity 6. The arc convex portion 8 is recessed into the accommodating cavity 6. The arc convex portion 8 secures the wire 2. That is, the first lead pin 3 will not be exposed outside the metal shell 4 after being connected to the corresponding pin of the thermistor 1. At the same time, the arc convex portion 8 can be formed by stamping, and the molding is also simple. The arc convex portion 8 will form a tight clamping fit with the wire 2, so that the metal shell 4 can achieve good position fixing and protection for the wire 2 and the thermistor 1. At the same time, such a setting will also form a gap between the corresponding side wall surface of the accommodating cavity 6 and the peripheral wall surface of the buffer silicone sleeve 5, which is also beneficial to the perfusion of the filling layer 7, and the structural design is reasonable.

[0022] In this embodiment, two second pins 9 are provided at the other end of the wire 2, and the ends of the second pins 9 are connected to a plug 10 with corresponding terminals. The second pins 9 and the terminals on the plug 10 are also welded. During installation, the plug can be matched with the socket on the panel to effectively fix the sensor. Compared with the welding method, the installation and disassembly between the sensor and the panel is also more convenient.

[0023] In this embodiment, the metal shell 4 is a stainless steel metal shell. The stainless steel metal shell makes the sensor have higher impact resistance and strength. During use, the internal thermistor 1 will not be deformed or damaged due to impact.

[0024] In this embodiment, the filling layer 7 is a thermal grease layer or an epoxy resin layer. By using thermal grease or epoxy resin as the filling material, the filled sensor has good thermal conductivity and sealing effects, is safer to use, and has a longer service life.

[0025] In this embodiment, the longitudinal section of the metal shell 4 is U-shaped, and the shape of the accommodating cavity 6 is consistent with the shape of the metal shell 4. Under the premise of ensuring the impact resistance of the metal shell 4, after the thermistor 1 with the buffer silicone sleeve 5 is placed in place, it will also maintain an appropriate distance from the wall surface of the concave part of the accommodating cavity 6. In this way, when pouring the filling material, the filling material can be conveniently injected into the buffer silicone sleeve 5, which is conducive to the full filling of the filling layer 7.

[0026] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. An ambient temperature compensation sensor, comprising a thermistor (1) and a wire (2), wherein one end of the wire (2) is provided with two first lead pins (3), and the first lead pins (3) are connected to corresponding pins of the thermistor (1), characterized in that: The device further comprises a metal shell (4) and a buffer silicone sleeve (5), wherein the metal shell (4) is provided with a receiving cavity (6) with a front opening, the buffer silicone sleeve (5) is arranged in the receiving cavity (6) and is provided with a through-going arrangement inside, the buffer silicone sleeve (5) covers the thermistor (1) and the connection between the first lead pin (3) and the lead pin, and a filling layer (7) is poured between the receiving cavity (6) and the buffer silicone sleeve (5), and between the buffer silicone sleeve (5) and the thermistor (1).

2. An ambient temperature compensation sensor according to claim 1, characterized in that: The wire (2) is partially located in the accommodating cavity (6), and at least one arc convex portion (8) is provided on the opposite wall surfaces at the opening of the accommodating cavity (6), and the arc convex portion (8) is recessed into the accommodating cavity (6), and the arc convex portion (8) secures the wire (2).

3. The ambient temperature compensation sensor according to claim 1, characterized in that: The other end of the wire (2) is provided with two second pins (9), and the ends of the second pins (9) are connected to a plug (10) with corresponding terminals.

4. The ambient temperature compensation sensor according to claim 1, characterized in that: The metal shell (4) is a stainless steel metal shell.

5. The ambient temperature compensation sensor according to claim 1, characterized in that: The filling layer (7) is a thermally conductive silicone grease layer or an epoxy resin layer.

6. The ambient temperature compensation sensor according to claim 1, characterized in that: The longitudinal section of the metal shell (4) is U-shaped, and the shape of the accommodating cavity (6) is consistent with the shape of the metal shell (4).

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