A urea sensor protection structure

Abstract

The utility model discloses a urea sensor protection structure belongs to urea sensor technical technical field, including mounting seat, is provided with sensing assembly and protective sleeve on the mounting seat, and the protective sleeve is located sensing assembly outer surface, and the both ends of mounting seat top surface all have opened first installation groove, and the both ends of protective sleeve bottom all are fixed with first elastic mounting block in first installation groove, and the side of first elastic mounting block has opened first clamping slot, and the side wall of first installation groove is fixed with first clamping block in first clamping slot, uses urea sensor protection structure, and installation is very firm, avoids the traditional protection structure and the sensor, and the mounting seat appears loose between.

Description

Technical Field

[0001] This utility model relates to the field of urea sensor technology, and in particular to a protective structure for a urea sensor. Background Technology

[0002] As a core detection component of the SCR (Selective Catalytic Reduction) exhaust gas treatment system in diesel vehicles, the urea sensor is responsible for real-time monitoring of the urea solution level, concentration, and temperature parameters in the urea tank. Its detection accuracy directly determines the injection quantity control accuracy of the SCR system, thus affecting the conversion efficiency of nitrogen oxides (NOx) in the exhaust gas and whether emissions meet standards. However, the urea sensor operates in harsh environments—urea solution is corrosive, and impurities and crystal particles easily mix into the tank. Furthermore, vibrations, bumps, and sudden temperature changes (-40℃ to 80℃) during vehicle operation all cause severe wear and tear on the sensor. Traditional protective structures have many technical defects, resulting in high sensor failure rates and short lifespans, becoming a key bottleneck restricting the stable operation of the SCR system.

[0003] Currently, the protective structure for urea sensors is not securely installed and has a high probability of detachment due to vibration. Continuous vibrations generated during vehicle operation (especially on bumpy roads) can cause loosening between the traditional protective structure and the sensor and mounting base. Therefore, there is an urgent need to design a protective structure for urea sensors to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a protective structure for urea sensors to solve the problems of existing urea sensor protective structures not being securely installed, having a high probability of detachment due to vibration, and the continuous vibration generated during vehicle operation causing loosening between the traditional protective structure and the sensor and mounting base.

[0005] To solve the above technical problems, this utility model provides a protective structure for a urea sensor, including a mounting base, on which a sensing component and a protective sleeve are disposed, the protective sleeve being located on the outer surface of the sensing component; The top surface of the mounting base has a first mounting groove at both ends, and the bottom end of the protective sleeve is fixed with a first elastic mounting block located in the first mounting groove. The side of the first elastic mounting block has a first slot, and the side wall of the first mounting groove is fixed with a first locking block located in the first slot.

[0006] As a further improvement to the above technical solution: Optionally, the mounting base has a second mounting groove, the bottom of the protective sleeve is fixed with a second elastic mounting block located in the second mounting groove, the side of the second elastic mounting block has a second slot, and the side wall of the second mounting groove is fixed with a second locking block located in the second slot.

[0007] Optionally, the sensing assembly includes a connector, an ultrasonic probe, and a reflector, wherein the ultrasonic probe is located in the connector and the reflector is fixed to the side of the connector.

[0008] Optionally, the mounting base has two mounting holes.

[0009] In the urea sensor protection structure provided by this utility model, a sensing component and a protective sleeve are provided on the mounting base. The protective sleeve is located on the outer surface of the sensing component. A first mounting groove is opened at both ends of the top surface of the mounting base. A first elastic mounting block located in the first mounting groove is fixed at both ends of the bottom of the protective sleeve. A first slot is opened on the side of the first elastic mounting block. A first locking block located in the first slot is fixed on the side wall of the first mounting groove. Using the urea sensor protection structure, the installation is very firm, avoiding loosening between the traditional protection structure and the sensor and mounting base. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the protective structure for the urea sensor provided by this utility model; Figure 2 This is a schematic diagram of the protective structure of the urea sensor provided by this utility model. Detailed Implementation

[0011] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0012] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0013] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0014] This utility model provides a protective structure for a urea sensor, the structure of which is as follows: Figure 1 , Figure 2 As shown, the device includes a mounting base 1, on which a sensing component 2 and a protective sleeve 12 are mounted. The protective sleeve 12 is located on the outer surface of the sensing component 2. First mounting grooves 3 are formed at both ends of the top surface of the mounting base 1. First elastic mounting blocks 4 located in the first mounting grooves 3 are fixed at both ends of the bottom of the protective sleeve 12. First slots 5 are formed on the sides of the first elastic mounting blocks 4. First locking blocks 6 located in the first slots 5 are fixed to the side walls of the first mounting grooves 3. Using this urea sensor protective structure ensures a very secure installation, avoiding loosening between the traditional protective structure and the sensing component 2 and the mounting base 1.

[0015] Furthermore, the mounting base 1 has a second mounting groove 7, the bottom of the protective sleeve 12 is fixed with a second elastic mounting block 8 located in the second mounting groove 7, the side of the second elastic mounting block 8 has a second slot 9, and the side wall of the second mounting groove 7 is fixed with a second locking block 10 located in the second slot 9.

[0016] Specifically, the sensing component 2 includes a connector 21, an ultrasonic probe 22, and a reflector 23. The ultrasonic probe 22 is located in the connector 21, and the reflector 23 is fixed to the side of the connector 21.

[0017] Furthermore, the mounting base 1 has two mounting holes 11.

[0018] Operating procedures Holding the protective sleeve 12, align the first elastic mounting block 4 at the bottom of the sleeve with the first mounting groove 3 of the mounting base 1 and the second elastic mounting block 8 with the second mounting groove 7. Slowly press the protective sleeve 12 downwards. The first elastic mounting block 4 will deform elastically under pressure and smoothly enter the first mounting groove 3. When the first slot 5 is aligned with the first locking block 6, the elastic mounting block will reset and the first locking block 6 will be embedded in the first slot 5. At the same time, the second elastic mounting block 8 will enter the second mounting groove 7 and the second locking block 10 will be embedded in the second slot 9, thus completing the rapid fixation of the protective sleeve 12.

[0019] After installation, gently pull the protective sleeve 12 to confirm that it is not loose and that there is no contact or interference between the inner wall of the protective sleeve 12 and the sensing component 2.

[0020] Beneficial effects This device effectively solves the problem of insecure installation of traditional protective structures. The double elastic snap-fit ​​structure, combined with the deformation buffering effect of the elastic mounting block, can absorb the vibration energy during vehicle operation, preventing the sensor component 2 from becoming loose or shifting position. The relative position accuracy between the ultrasonic probe 22 and the reflector plate 23 remains stable, ensuring the accuracy of the SCR system's injection volume control and preventing the vehicle from being limited in torque and speed due to sensor failure. Moreover, it is easy to install and remove without damaging the sensor component 2.

[0021] Overall, this urea sensor protection structure has significantly improved in terms of adaptability and ease of maintenance, comprehensively solving the pain points of traditional protection structures and providing strong support for the stable operation of the SCR system.

[0022] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A protective structure for a urea sensor, characterized in that, Includes a mounting base (1), on which a sensing component (2) and a protective sleeve (12) are disposed, the protective sleeve (12) being located on the outer surface of the sensing component (2); The mounting base (1) has a first mounting groove (3) at both ends of its top surface. The protective sleeve (12) has a first elastic mounting block (4) fixed at both ends of its bottom surface in the first mounting groove (3). The first elastic mounting block (4) has a first slot (5) on its side. The first mounting groove (3) has a first locking block (6) fixed on its side wall in the first slot (5).

2. The urea sensor protection structure as described in claim 1, characterized in that, The mounting base (1) has a second mounting groove (7), and the bottom of the protective sleeve (12) is fixed with a second elastic mounting block (8) located in the second mounting groove (7). The side of the second elastic mounting block (8) has a second slot (9), and the side wall of the second mounting groove (7) is fixed with a second locking block (10) located in the second slot (9).

3. The urea sensor protection structure as described in claim 1, characterized in that, The sensing component (2) includes a connector (21), an ultrasonic probe (22) and a reflector (23). The ultrasonic probe (22) is located in the connector (21), and the reflector (23) is fixed to the side of the connector (21).

4. The urea sensor protection structure as described in claim 1, characterized in that, The mounting base (1) has two mounting holes (11).

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