High-temperature-resistant oxygen sensor detection device
By setting up a heat-insulating tube sleeve and heat-insulating material on the outside of the cable of the oxygen sensor detection device, combined with structures such as fastening bolts and buffer shells, the problem of the existing oxygen sensor cable lacking high temperature resistance is solved, and the device's high temperature resistance and measurement accuracy are significantly improved.
Patent Information
- Application Number
- CN202420970719.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-07
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-05-07
AI Technical Summary
The cables of existing oxygen sensors lack high temperature resistance. Long-term high temperature erosion will damage the sensor and cable, resulting in an increase in line resistance, affecting measurement accuracy, and may even short circuit or breakage.
A high-temperature resistant oxygen sensor detection device is designed. By setting a heat-insulating tube sleeve and heat-insulating material on the outside of the cable, combined with structures such as fastening bolts and buffer shells, the device's high-temperature resistance and shock absorption performance are improved.
Through the use of thermal insulation materials, the high temperature resistance of the oxygen sensor detection device is significantly improved, and the line resistance value caused by high temperature is avoided and potential short circuit or circuit breaker problems are potentially short circuit or circuit breaker problems are ensured, ensuring measurement accuracy and device stability.
Smart Images
Figure CN222618549U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of oxygen sensors, and in particular relates to a high temperature resistant oxygen sensor detection device. Background Art
[0002] Oxygen sensor is a standard configuration on automobiles. It uses ceramic sensitive elements to measure the oxygen potential in the automobile exhaust pipe, and calculates the corresponding oxygen concentration based on the principle of chemical equilibrium, so as to monitor and control the combustion air-fuel ratio to ensure product quality and tail gas emission standards. Oxygen sensor is an indispensable component in engines that use three-way catalytic converters to reduce exhaust pollution. Once the air-fuel ratio of the mixture deviates from the theoretical air-fuel ratio, the purification capacity of the three-way catalyst for CO, HC and NOx will drop sharply. Therefore, an oxygen sensor is installed in the exhaust pipe to detect the concentration of oxygen in the exhaust gas and send a feedback signal to the ECU, which then controls the increase or decrease of the amount of fuel injected by the injector, thereby controlling the air-fuel ratio of the mixture near the theoretical value.
[0003] The existing oxygen sensors still have some defects when used. The cables often do not have high temperature resistance. When used in an environment above 200°C, long-term high temperature corrosion will damage the sensor and the cable at the tail of the sensor, causing the line resistance to increase and affect the measurement accuracy, and even cause short circuits and open circuits. For this reason, we propose a high-temperature resistant oxygen sensor detection device. Utility Model Content
[0004] The purpose of the utility model is to provide a high temperature resistant oxygen sensor detection device to solve the problem that the cable proposed in the above background technology does not have the high temperature resistance function, and long-term high temperature corrosion will damage the sensor and the cable at the tail of the sensor, resulting in an increase in line resistance, affecting the measurement accuracy, and even causing short circuits, open circuits, etc.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-temperature resistant oxygen sensor detection device, comprising an oxygen sensor body and a cable, a cable is provided at one end of the oxygen sensor body, the cable is fixedly connected to one end of the oxygen sensor body, an insulating sleeve is provided on the outside of the cable, an insulating material is provided inside the insulating sleeve, the insulating material is fixedly arranged on the inner wall of the insulating sleeve, the insulating sleeve is movably connected to the outside of the cable, the insulating material is fitted with the outer surface of the cable, an opening is provided at one end of the insulating sleeve, the opening extends to the inside of the insulating sleeve, a No. 1 connecting strip is provided on the left side of the opening, a No. 2 connecting strip is provided on the right side of the opening, the No. 1 connecting strip and the No. 2 connecting strip have the same specifications, the No. 1 connecting strip and the No. 2 connecting strip are movably connected, and the No. 1 connecting strip and the No. 2 connecting strip are both made of insulating material.
[0006] Preferably, fastening bolts are provided inside the No. 1 connecting strip and the No. 2 connecting strip, and the fastening bolts are movably connected inside the No. 1 connecting strip and the No. 2 connecting strip. There are several fastening bolts, and a nut is provided at one end of the fastening bolt.
[0007] Preferably, a plurality of through holes are provided inside the No. 1 connecting strip and the No. 2 connecting strip, internal threads are provided inside the through holes and the nuts, external threads are provided outside the fastening bolts, and the internal threads are adapted to the external threads.
[0008] Preferably, a buffer shell is provided on the outer side of the oxygen sensor body, and the buffer shell is movably connected to the outer side of the oxygen sensor body.
[0009] Preferably, a spring shock absorber is provided inside the buffer shell, one end of the spring shock absorber is fixedly connected to the inner wall of the buffer shell, and the other end of the spring shock absorber is fixedly connected to the outside of the oxygen sensor body, and there are several spring shock absorbers.
[0010] Preferably, anti-sliding blocks are provided on both sides of the buffer shell, and the number of the anti-sliding blocks is several.
[0011] Preferably, a high temperature resistant gasket is installed at the connection between the thermal insulation sleeve and the oxygen sensor body.
[0012] Preferably, the outer side of the thermal insulation pipe sleeve is provided with heat dissipation holes, and the number of the heat dissipation holes is several.
[0013] Compared with the prior art, the beneficial effects of the utility model are:
[0014] 1. Put the cable into the insulation sleeve through the opening, then connect the No. 1 connecting strip and the No. 2 connecting strip, and put the insulation sleeve on the outside of the cable. The high temperature resistance function is achieved by the provided insulation material. After a period of use, the insulation sleeve is damaged and can be replaced with other insulation sleeves to ensure the heat resistance of the insulation sleeve, avoid the increase of the resistance of the heated line to affect the measurement accuracy, and even the occurrence of short circuit, open circuit, etc., to improve the high temperature resistance of the device.
[0015] 2. By connecting the fastening bolt into the through hole and connecting the nut to one end of the fastening bolt, the stability of the fastening bolt connection is improved through the provided internal and external threads, and the provided buffer shell and spring shock absorber can achieve shock absorption, thereby improving the shock absorption effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the split structure of the oxygen sensor body and the heat insulation sleeve of the utility model;
[0017] Figure 2 It is a schematic diagram of the overall structure of the utility model;
[0018] Figure 3 This is a schematic diagram of the internal structure of the buffer shell of the utility model.
[0019] In the figure: 1. Oxygen sensor body; 2. Cable; 3. Insulation sleeve; 4. Opening; 5. No. 1 connecting strip; 6. No. 2 connecting strip; 7. Fastening bolt; 8. Nut; 9. Through hole; 10. Internal thread; 11. External thread; 12. Buffer shell; 13. Spring shock absorber; 14. Anti-sliding block; 15. High temperature resistant gasket. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] See also Figure 1-3 The utility model provides a technical solution for a high temperature resistant oxygen sensor detection device: it includes an oxygen sensor body 1 and a cable 2, one end of the oxygen sensor body 1 is provided with the cable 2, the cable 2 is fixedly connected to one end of the oxygen sensor body 1, an insulating sleeve 3 is provided on the outside of the cable 2, an insulating material is provided inside the insulating sleeve 3, the insulating material is fixedly arranged on the inner wall of the insulating sleeve 3, the insulating sleeve 3 is movably connected to the outside of the cable 2, the insulating material is fitted with the outer surface of the cable 2, an opening 4 is provided at one end of the insulating sleeve 3, the opening 4 extends to the inside of the insulating sleeve 3, a No. 1 connecting strip 5 is provided on the left side of the opening 4, a No. 2 connecting strip 6 is provided on the right side of the opening 4, the No. 1 connecting strip 5 and the No. 2 connecting strip 6 have the same specifications, the No. 1 connecting strip 5 and the No. 2 connecting strip 6 are movably connected, and the No. 1 connecting strip 5 and the No. 2 connecting strip 6 are both made of insulating materials.
[0022] Specifically, fastening bolts 7 are provided inside the No. 1 connecting strip 5 and the No. 2 connecting strip 6 , and the fastening bolts 7 are movably connected inside the No. 1 connecting strip 5 and the No. 2 connecting strip 6 . There are several fastening bolts 7 , and a nut 8 is provided at one end of the fastening bolt 7 .
[0023] Specifically, a plurality of through holes 9 are provided inside the No. 1 connecting strip 5 and the No. 2 connecting strip 6 , internal threads 10 are provided inside the through holes 9 and the nuts 8 , external threads 11 are provided outside the fastening bolts 7 , and the internal threads 10 match the external threads 11 .
[0024] Specifically, a buffer shell 12 is provided on the outer side of the oxygen sensor body 1 , and the buffer shell 12 is movably connected to the outer side of the oxygen sensor body 1 .
[0025] Specifically, a spring shock absorber 13 is provided inside the buffer shell 12 , one end of the spring shock absorber 13 is fixedly connected to the inner wall of the buffer shell 12 , and the other end of the spring shock absorber 13 is fixedly connected to the outside of the oxygen sensor body 1 , and there are several spring shock absorbers 13 .
[0026] Specifically, anti-sliding blocks 14 are provided on both sides of the buffer shell 12 , and the number of anti-sliding blocks 14 is several.
[0027] Specifically, a high temperature resistant gasket 15 is installed at the connection between the heat insulating sleeve 3 and the oxygen sensor body 1 .
[0028] Specifically, the outer side of the heat-insulating pipe sleeve 3 is provided with a plurality of heat-dissipating holes.
[0029] In the present embodiment, when the high temperature detection device of the oxygen sensor is used, the cable 2 is inserted into the inside of the thermal insulation sleeve 3 through the opening 4, and then the No. 1 connecting strip 5 and the No. 2 connecting strip 6 are connected, and the thermal insulation sleeve 3 is sleeved on the outside of the cable 2. The high temperature resistance function is achieved by the provided insulation material. After a period of use, if the thermal insulation sleeve 3 is damaged, other thermal insulation sleeves 3 can be replaced for use to ensure the heat resistance of the thermal insulation sleeve 3, avoid the increase of the resistance of the heated line to affect the measurement accuracy, and even the occurrence of short circuit, open circuit, etc., thereby improving the high temperature resistance of the device.
[0030] By connecting the fastening bolt 7 into the through hole 9 and connecting the nut 8 to one end of the fastening bolt 7, the stability of the fastening bolt 7 during connection is improved through the provided internal thread 10 and external thread 11, and shock absorption can be achieved through the provided buffer shell 12 and spring shock absorber 13, thereby improving the shock absorption effect of the device.
[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".
[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A high temperature resistant oxygen sensor detection device, comprising an oxygen sensor body and a cable, characterized in that: A cable is provided at one end of the oxygen sensor body, and the cable is fixedly connected to one end of the oxygen sensor body. An insulating sleeve is provided on the outside of the cable, and an insulating material is provided inside the insulating sleeve. The insulating material is fixedly arranged on the inner wall of the insulating sleeve, and the insulating sleeve is movably connected to the outside of the cable. The insulating material is fitted with the outer surface of the cable. An opening is provided at one end of the insulating sleeve, and the opening extends to the inside of the insulating sleeve. A No. 1 connecting strip is provided on the left side of the opening, and a No. 2 connecting strip is provided on the right side of the opening. The No. 1 connecting strip and the No. 2 connecting strip have the same specifications, and the No. 1 connecting strip and the No. 2 connecting strip are movably connected, and the No. 1 connecting strip and the No. 2 connecting strip are both made of insulating materials.
2. A high temperature resistant oxygen sensor detection device according to claim 1, characterized in that: The No. 1 connecting strip and the No. 2 connecting strip are provided with fastening bolts inside, and the fastening bolts are movably connected inside the No. 1 connecting strip and the No. 2 connecting strip. There are several fastening bolts, and a nut is provided at one end of the fastening bolt.
3. A high temperature resistant oxygen sensor detection device according to claim 2, characterized in that: The No. 1 connecting strip and the No. 2 connecting strip are provided with a plurality of through holes inside, the through holes and the inside of the nuts are both provided with internal threads, the outside of the fastening bolts are provided with external threads, and the internal threads are adapted to the external threads.
4. A high temperature resistant oxygen sensor detection device according to claim 1, characterized in that: A buffer shell is arranged outside the oxygen sensor body, and the buffer shell is movably connected to the outside of the oxygen sensor body.
5. A high temperature resistant oxygen sensor detection device according to claim 4, characterized in that: A spring shock absorber is arranged inside the buffer shell, one end of the spring shock absorber is fixedly connected to the inner wall of the buffer shell, and the other end of the spring shock absorber is fixedly connected to the outside of the oxygen sensor body, and there are several spring shock absorbers.
6. A high temperature resistant oxygen sensor detection device according to claim 4, characterized in that: Anti-sliding blocks are arranged on both sides of the buffer shell, and the number of the anti-sliding blocks is several.
7. A high temperature resistant oxygen sensor detection device according to claim 1, characterized in that: A high temperature resistant gasket is installed at the connection between the heat insulation sleeve and the oxygen sensor body.
8. The high temperature resistant oxygen sensor detection device according to claim 1, characterized in that: The outer side of the heat-insulating pipe sleeve is provided with heat dissipation holes, and the number of the heat dissipation holes is several.