Contact terminal of nitrogen-oxygen sensor

Abstract

The utility model discloses a contact terminal of a nitrogen-oxygen sensor, which comprises a contact terminal body, a contact terminal head part, two contact terminal R angles, a contact terminal inverted buckle and a contact terminal connecting sheet, wherein the contact terminal body is provided with a contact terminal head part, two contact terminal R angles, a contact terminal inverted buckle and a contact terminal connecting sheet. According to the utility model, the stainless steel material and the nickel electroplating material are adopted, so that the corrosion resistance, the mechanical strength and the heat resistance are excellent, the stable performance can be kept in a severe environment, and the service life is prolonged. The precise size specification meets the installation requirement and the performance requirement, it is ensured that the internal space layout of the sensor is reasonable, interference with other parts is avoided, and meanwhile the sensor has enough mechanical strength and stability.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to nitrogen oxide sensor contact terminals. Background Technology

[0002] With increasingly stringent vehicle emission standards, nitrogen oxide sensors play a crucial role in monitoring and controlling vehicle exhaust emissions. The core technologies of the nitrogen oxide sensor market have long been controlled by a few foreign companies. This has allowed foreign companies to dominate the global market and reap huge profits through high pricing strategies, while also limiting market competition and industry innovation.

[0003] To break this situation, companies around the world are increasing their R&D investment, focusing on the independent research and development and production of nitrogen oxide sensors and components. The contact terminals in this design are an important component developed to meet the operating conditions of automotive-grade nitrogen oxide sensors in high-temperature, high-corrosion, and vibration environments. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a nitrogen and oxygen sensor contact terminal.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] The nitrogen and oxygen sensor contact terminal includes a contact terminal body, a contact terminal head on the contact terminal body, two contact terminal R angles on the contact terminal body, a contact terminal inverted clip on the contact terminal body, and a contact terminal connecting piece on the contact terminal body.

[0007] Preferably, the contact terminal body is made of stainless steel, and the surface of the contact terminal body is electroplated with nickel.

[0008] Preferably, the contact terminal body has a length of 22.3 mm, a width of 0.65 mm, and a thickness of 0.25 mm.

[0009] Preferably, the height of the contact terminal head is 2.35mm, and the height of the R-angle of the two contact terminals is 0.45mm.

[0010] Preferably, the undercut height of the contact terminal is 2.26 mm, and the undercut width of the contact terminal is 0.8 mm.

[0011] Preferably, the contact terminal body and the contact terminal head portion are U-shaped, and the contact terminal body and the contact terminal connecting piece portion are also U-shaped.

[0012] The beneficial effects of this utility model are:

[0013] 1. Material advantages: Made of stainless steel and electroplated with nickel, it has excellent corrosion resistance, mechanical strength and heat resistance, and can maintain stable performance in harsh environments, thus extending its service life.

[0014] 2. Size optimization: Precise size specifications meet installation requirements and performance needs, ensuring reasonable layout within the sensor's internal space, avoiding interference with other components, while also possessing sufficient mechanical strength and stability.

[0015] 3. Reliable connection: The design of the contact terminal head and the snap-back design, as well as the U-shaped design of the connecting piece, provide a variety of reliable connection methods to prevent loosening or displacement in environments such as vibration, and ensure the stability of signal and current transmission.

[0016] 4. High signal transmission quality: The R-angle design makes the contact smooth and stable, reduces contact resistance, and improves signal transmission efficiency and quality.

[0017] 5. Prevent damage: The rounded corners prevent sharp edges from damaging the mating parts, extending the service life of the contact terminals and mating parts. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the nitrogen and oxygen sensor contact terminal proposed in this utility model;

[0019] Figure 2 for Figure 1 A schematic diagram of the structure viewed from below.

[0020] In the diagram: 1. Contact terminal body, 2. Contact terminal R-angle, 3. Contact terminal head, 4. Contact terminal inverted clip, 5. Contact terminal connecting piece. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figure 1-2

[0023] As a key component in the nitrogen and oxygen sensor assembly, the contact terminals of the nitrogen and oxygen sensor play a crucial role in ensuring the normal operation of the sensor and signal transmission.

[0024] The contact terminal body 1 is made of stainless steel, specifically SUS304 or SUS301. Stainless steel has excellent corrosion resistance, mechanical strength, and heat resistance, enabling it to maintain stable performance in harsh environments such as high temperature and high corrosion where the nitrogen-oxygen sensor operates. Based on the stainless steel material, the surface of the contact terminal body 1 is electroplated with nickel. The nickel plating layer not only further enhances the corrosion resistance of the contact terminal but also improves its surface conductivity, ensuring the stability and reliability of signal transmission. Simultaneously, the nickel plating treatment also gives the contact terminal body 1 a better appearance, preventing surface oxidation and rust.

[0025] The contact terminal body 1 has a length of 22.3 mm, a width of 0.65 mm, and a thickness of 0.25 mm. These precise dimensions have been carefully designed and optimized to meet the installation requirements and performance needs of the nitrogen-oxygen sensor assembly. Appropriate dimensions ensure a reasonable spatial layout of the contact terminal body 1 within the sensor, preventing interference with other components, while also guaranteeing sufficient mechanical strength and stability during operation.

[0026] The contact terminal head 3 is an important part of the contact terminal body 1 for connection or fixation to the outside. Its height is 2.35mm, and it is designed with specific dimensions and shapes to facilitate reliable connection with other components.

[0027] The contact terminal head 3 has a U-shaped design. The contact terminal head 3 is typically used to hang or fix to an object, such as other components in a nitrogen-oxygen sensor assembly or a mounting bracket. The bending structure of the head securely fixes the contact terminal body 1 in a specific position, preventing loosening or displacement under conditions of vibration or other factors.

[0028] The contact terminal body 1 is provided with two contact terminal R-angles 2. The R-angle refers to the rounded transition at the edge of the contact terminal body 1. This design reduces stress concentration and improves the mechanical strength and fatigue resistance of the contact terminal. The height of both contact terminal R-angles 2 is 0.45mm. This dimension was determined through precise calculation and testing to ensure that the structural strength and reliability are maximized without affecting other performance characteristics of the contact terminal.

[0029] The radius (R) of the contact terminal plays a crucial role in its operation. It contacts the mating component, forming a conductive circuit to transmit signals. The R-angle design makes the contact smoother and more stable, reducing contact resistance and improving signal transmission efficiency and quality. Simultaneously, the R-angle prevents sharp edges from damaging the mating component, extending the service life of both the contact terminal and the mating component.

[0030] The contact terminal body 1 is provided with a contact terminal buckle 4. The contact terminal buckle 4 has a height of 2.26 mm and a width of 0.8 mm. The buckle is designed to provide an additional fixing and connection method during installation. The buckle structure can be inserted into or fixed to an object, increasing the installation stability of the contact terminal body 1 and preventing it from falling off under conditions such as vibration.

[0031] The inverted contact terminal 4 plays a crucial role in the installation and use of the nitrogen-oxygen sensor assembly. Together with the contact terminal head 3, it ensures the stable position of the contact terminal inside the sensor, preventing displacement or loosening due to external forces.

[0032] The contact terminal body 1 is also provided with a contact terminal connecting piece 5. The contact terminal connecting piece 5 is also U-shaped. This design can increase the elasticity and deformation capacity of the contact terminal connecting piece 5, allowing it to better adapt to different wire sizes and installation conditions when connected to the wire. The U-shaped design can also provide a larger contact area, enhance the connection stability with the wire, and ensure the reliability of current transmission.

[0033] In use, the contact terminal body 1 is made of stainless steel (SUS304 or SUS301) with nickel electroplated on the surface. The contact terminal head 3 and the contact terminal buckle 4 are provided on the upper cover of the contact terminal body 1, so that it can be hung or fixed on an object. The R angle 2 of the two contact terminals contacts the mating part to form a conductive circuit to realize signal transmission. The contact terminal buckle 4 is inserted into or fixed on the object to increase the installation stability. The U-shaped design of the contact terminal connecting piece 5 enhances the connection stability with the wire and ensures the reliability of current transmission.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A nitric oxide sensor contact terminal comprising a contact terminal body (1), characterized in that The contact terminal body (1) is provided with a contact terminal head (3), two contact terminal R angles (2), a contact terminal undercut (4) and a contact terminal connecting piece (5).

2. The nitric oxide sensor contact terminal of claim 1, wherein, The contact terminal body (1) is made of stainless steel, and the surface of the contact terminal body (1) is electroplated with nickel.

3. The nitric oxide sensor contact terminal of claim 2, wherein, The length of the contact terminal body (1) is 22.3 mm, the width of the contact terminal body (1) is 0.65 mm, and the thickness of the contact terminal body (1) is 0.25 mm.

4. The nitric oxide sensor contact terminal of claim 3, wherein, The height of the contact terminal head (3) is 2.35 mm, and the height of each of the two contact terminal R angles (2) is 0.45 mm.

5. The nitric oxide sensor contact terminal of claim 4, wherein, The height of the contact terminal undercut (4) is 2.26 mm, and the width of the contact terminal undercut (4) is 0.8 mm.

6. The nitric oxide sensor contact terminal of claim 5, wherein, The contact terminal body (1) and the contact terminal head (3) are partially designed in a U shape, and the contact terminal body (1) and the contact terminal connecting piece (5) are also partially designed in a U shape.

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