Temperature and pressure sensor NTC welding protection device

Abstract

The invention relates to a temperature and pressure sensor NTC welding protection device. The device comprises a welding protection ring and a boss. The protective ring comprises a protective ring body, bosses corresponding to the NTC welding points are arranged at the two ends of the protective ring body, and oblique notches are formed in one sides of the bosses. The protection ring body plays a role in enclosing, the bosses provide protection for NTC welding points, and the oblique notches provide convenience for the welding points after assembly and welding are completed. And the glue filling groove is formed in the boss, so that a space surrounding a welding point can be provided, and glue filling operation can be carried out. During glue pouring, proper pouring sealant needs to be selected, it is ensured that the position of the protection ring is accurate and free of pollutants, glue pouring is uniform and slow, bubbles are avoided, and it is ensured that glue liquid is fully cured. The welding protection device is combined with glue pouring, double protection is provided for the NTC welding point of the temperature and pressure sensor, and compared with a protection ring in the market, the protection ring can protect the welding point more comprehensively and has wide application prospects.

Description

Technical Field

[0001] The invention relates to the technical field of sensor protection, in particular to an NTC welding protection device for a temperature and pressure sensor. Background Art

[0002] In the production and use of temperature and pressure sensors, welding quality is crucial to the performance and reliability of the sensors. However, current welding technology often makes it difficult to effectively protect welding points, which are easily affected by external environmental factors such as air conditioning refrigeration and moisture, thereby reducing the performance and service life of the sensors. Therefore, an innovative welding protection device is needed to solve this problem. Summary of the invention

[0003] The object of the present invention is to provide a NTC welding protective device for a temperature and pressure sensor to improve the performance and reliability of the temperature and pressure sensor. The protective device consists of a welding protective ring and a boss. The protective ring includes a protective ring body, bosses at both ends of the protective ring body corresponding to the NTC welding points, an oblique cut is provided on each side of the boss, and a glue filling groove is provided in the boss. On the one hand, the protective ring body provides an extrusion sealing function for the gap between the ceramic surface of the ceramic capacitor and the shell, and on the other hand, it provides a containment function for the glue filling groove after glue filling. The boss is specifically used to protect the raised NTC welding point, and the groove is provided in the boss to provide a protective space and glue filling space for the welding point. After the NTC welding point is welded, the oblique cut allows the boss with the groove to be unfolded, which provides convenience for the NTC welding point after assembly welding, further enhances the protection effect, avoids the welding point from being directly exposed to the external environment, and effectively blocks the air conditioning refrigeration gas, moisture, etc. from entering the sensor.

[0004] Compared with the protective rings on the market, the NTC welding protective devices for temperature and pressure sensors on the market currently lack the boss part of the present invention, and cannot completely surround the raised NTC welding points, which has a significant shortcoming in the protective effect. In contrast, the protective device of the present invention can protect the welding points more comprehensively by virtue of the unique design of the boss and the glue injection groove, greatly improving the reliability of the protection. By combining the installation of the protective device with the glue injection, double protection is created for the NTC welding points, which effectively improves the performance and reliability of the temperature and pressure sensor.

[0005] When pouring glue, you should choose a potting glue with good insulation, moisture resistance, corrosion resistance and anti-aging properties to ensure long-term and effective protection of the NTC welding points. Before pouring glue, make sure that the position of the protective ring is accurate, the boss completely surrounds the welding point, and there are no impurities, dust and other pollutants in the protective ring to avoid affecting the performance of the potting glue. The pouring process should be carried out evenly and slowly to avoid bubbles. Because the boss has an oblique cut, it may cause glue leakage. Before pouring glue, a temporary bracket can be set to fix the boss to solve the problem. Finally, after pouring glue, make sure that the glue is fully cured, and control the curing temperature and time according to the characteristics of the potting glue to ensure the protection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is the structural front view of the present invention.

[0007] Figure 2 It is a top view of the structure of the present invention.

[0008] Figure 3 It is the front view of the structure after assembly of the present invention.

[0009] Figure 4 It is a top view of the structure after assembly of the present invention.

[0010] In the figure, 1 is the protective ring body, 2 is the boss, 3 is the oblique cut, 4 is the glue filling groove, 5 is the NTC welding point, and 6 is the ceramic capacitor. DETAILED DESCRIPTION

[0011] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0012] The present invention is further described in detail below based on the accompanying drawings and embodiments.

[0013] Example

[0014] Please refer to Figure 3 to Figure 4 shown.

[0015] The embodiment of the present application provides an NTC welding protection device for a temperature and pressure sensor, including a welding protection ring body 1, a boss 2 connected to the protection ring body 1, an oblique cut 3 on each side of the boss 2, and a glue filling groove 4 in the boss 2.

[0016] After welding is completed, the protective ring body 1 is mounted on the ceramic capacitor 6, and the position is adjusted so that the bosses 2 at both ends of the protective ring body 1 are respectively located on both sides of the NTC welding point 5 of the sensor, and the bosses 2 are expanded through the oblique cut 3 to completely surround the NTC welding point 5, and then the glue pouring operation is performed in the glue pouring groove 4 to ensure that the glue fully fills the groove to form a good protective layer.

[0017] The NTC welding protection device of the temperature and pressure sensor of the present invention provides double protection for the NTC welding point of the temperature and pressure sensor by combining the welding protection device with glue potting, effectively improves the performance and reliability of the sensor, and has broad application prospects.

Claims

1. A temperature and pressure sensor NTC welding protection device, characterized in that: It comprises a welding protection ring body (1) and bosses (2) arranged at two ends of the protection ring body (1) corresponding to the raised NTC welding points (5).

2. A temperature and pressure sensor NTC welding protection device as claimed in claim 1, characterized in that: An oblique cutout (3) is provided on one side of each of the bosses (2), and a glue-filling groove (4) is provided inside the bosses (2).

3. A temperature and pressure sensor NTC welding protection device as claimed in claim 1, characterized in that: The protective ring body (1) can provide an effective extrusion sealing function for the gap between the ceramic surface of the ceramic capacitor (6) and the shell.

4. A temperature and pressure sensor NTC welding protection device as claimed in claim 2, characterized in that: The glue injection groove (4) provided in the boss (2) can provide a safe protection space and glue injection space for the NTC welding point (5).

5. A temperature and pressure sensor NTC welding protection device as described in claims 1-4, characterized in that: The protective ring body (1) can provide a stable enclosure for the glue-filling groove (4) after glue-filling.

6. A temperature and pressure sensor NTC welding protection device as described in claims 1-5, characterized in that: The oblique cut (3) can expand the boss (2) to provide a convenient passage for the NTC welding point after assembly welding is completed.

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