Special oxygen sensor for automobile

Abstract

The invention relates to the technical field of oxygen sensors, in particular to an automobile special oxygen sensor which comprises a second circular ring, an oxygen sensor body, a first circular rod and an auxiliary assembly. The circular ring I is rotationally connected with a circular ring II; the ring II is in threaded connection with an oxygen sensor; a first round rod is slidably connected to the second circular ring and connected with the first circular ring in a pluggable mode. A circular hole I is formed in the circular ring I; a circular hole II is formed in the circular ring I; the circular hole I and the circular hole II are positioned on the same diameter line of the circular ring I; one end of the round rod is located in the first round hole. During regular maintenance, the windward side and the leeward side of the oxygen sensor are interchanged by manually rotating the second circular ring, so that the single-side abrasion phenomenon of a protective layer can be relieved, the service life is prolonged, residual carbon deposits on the oxygen sensor can be blown away and cleaned through waste gas, the detection precision is ensured, and compared with a conventional interchange mode, the detection efficiency is improved. The oxygen sensor does not need to be detached, and operation is more convenient.

Description

Technical Field

[0001] This invention relates to the technical field of oxygen sensors. More specifically, this invention relates to an oxygen sensor specifically designed for automobiles. Background Technology

[0002] The automotive oxygen sensor is a key feedback element in the electronic fuel injection engine control system, primarily used to monitor the oxygen content in exhaust gas, and is an important sensing device in the field of automotive emission control. This sensor is typically mounted vertically in the exhaust pipe, causing exhaust gas to continuously flow over only one side of it.

[0003] Under long-term operation, this asymmetrical airflow impact exacerbates the non-uniform wear of the sensor: the windward side, continuously subjected to high-temperature, high-speed exhaust gas, experiences faster wear on its external protective layer, potentially leading to premature exposure of sensitive internal ceramic components; while the leeward side, with weaker airflow disturbance, is more prone to oil and carbon deposits. This uneven distribution of carbon deposits not only disrupts the thermal balance and gas diffusion characteristics of the sensor surface but also significantly reduces its response speed and detection accuracy, thereby affecting the precise control of the engine's air-fuel ratio and weakening emission control effectiveness. Summary of the Invention

[0004] To overcome the drawback that long-term unilateral exhaust gas impact on the sensor will exacerbate the non-uniform wear of the sensor, this invention provides an automotive-specific oxygen sensor.

[0005] The technical implementation of this invention is as follows: A special oxygen sensor for automobiles includes a first ring; the first ring is fixedly connected to an exhaust pipe; it also includes a second ring, an oxygen sensor, a first rod, and an auxiliary component; the second ring is rotatably connected to the first ring; the oxygen sensor is threadedly connected to the second ring; the first rod is slidably connected to the second ring, and the first rod is plugged into and pulled into the first ring; the first ring has a first hole; the first ring has a second hole; the first hole and the second hole are located on the same diameter line of the first ring; the end of the first rod is located inside the first hole; the auxiliary component is connected to the first ring; the auxiliary component is used to restrict the movement direction of the second ring.

[0006] Furthermore, a sealing ring is provided between ring one and ring two.

[0007] Furthermore, a sealing ring is provided between the second annular ring and the oxygen sensor.

[0008] Furthermore, the second ring has an oblique angle.

[0009] Furthermore, the auxiliary components include a third ring, a limiting block, a first spring, and a second spring; the third ring is fixedly connected to the first ring; the third ring is provided with several reverse teeth; the limiting block is slidably connected to the second ring; the first spring is fixedly connected to the limiting block, and the first spring is fixedly connected to the second ring; the second spring is sleeved on the outside of the first round rod, one end of the second spring is fixedly connected to the flange of the first round rod, and the other end of the second spring is fixedly connected to the second ring.

[0010] Furthermore, it also includes a counting component, which comprises a cylinder, a second round rod, a triangular prism, and elastic plates; two cylinders are fixedly connected to a third ring; a second round rod is provided on the inner side of each cylinder, and the second round rod is fixedly connected to the third ring; a triangular prism is rotatably connected to each second round rod; a mark is provided on each quadrilateral face of the triangular prism; several elastic plates are fixedly connected to the inner side of each cylinder, and the elastic plates are in contact with the triangular prism.

[0011] Furthermore, a hemispherical shape is provided at one end of the round rod.

[0012] Furthermore, both the circular ring and the limiting block are made of a smooth material.

[0013] Furthermore, both the round rod and the triangular prism are made of wear-resistant material.

[0014] Furthermore, the cylinder is made of a transparent material.

[0015] The present invention has the following advantages: First, during regular maintenance, the windward and leeward sides of the oxygen sensor can be interchanged by manually rotating the second ring. This can reduce the wear of the protective layer on one side, improve its lifespan, and remove the carbon deposits remaining on the oxygen sensor by the exhaust gas, thus ensuring detection accuracy. Compared with the conventional interchange method, this method does not require disassembling the oxygen sensor, making the operation more convenient. Second, when the manual operation of exchanging the windward and leeward sides of the oxygen sensor is interrupted, the limit block, spring one and spring two work together to ensure that the operator can only rotate the oxygen sensor in the previous direction, and it will be self-locked after rotating 180 degrees. The operator does not need to confirm the direction and angle of the oxygen sensor rotation, which further improves the convenience of manual operation. Third, the round rod used to fix the oxygen sensor can also be used to drive the triangular prism to rotate, so that the triangular prism counts the interchange operations, making it convenient for manual judgment of the oxygen sensor's service life. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of the automotive-specific oxygen sensor of the present invention is shown; Figure 2 A cross-sectional view of the automotive-specific oxygen sensor of the present invention is shown; Figure 3 A left view of the automotive-specific oxygen sensor of the present invention is shown; Figure 4 A schematic diagram of the structure of the three rings of the present invention is shown; Figure 5 The present invention is shown. Figure 4 Enlarged view of point A in the middle; Figure 6 The present invention is shown. Figure 4 Enlarged view of point B in the middle; Figure 7 A schematic diagram of the counting component of the present invention is shown.

[0017] The components in the attached diagram are labeled as follows: 1-Ring 1, 2-Ring 2, 3-Oxygen sensor, 4-Ring 1, 5-Exhaust pipe, 6-Ring 3, 7-Limiting block, 8-Spring 1, 9-Spring 2, 10-Cylinder, 11-Ring 2, 12-Triangular prism, 13-Elastic sheet, 91-Ring hole 1, 92-Ring hole 2, 93-Reverse tooth, 94-Through hole. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings. It is hereby declared that the directional terms such as up, down, left, right, front, back, inside, and outside used in this text are based solely on the accompanying drawings and are not intended to specifically limit the invention.

[0019] Example 1: A car-specific oxygen sensor, such as... Figures 1-6 As shown, it includes a first ring 1; the first ring 1 is welded to the exhaust pipe 5; it also includes a second ring 2, an oxygen sensor 3, a first rod 4 and auxiliary components; the second ring 2 is rotatably connected to the inner side of the first ring 1; the oxygen sensor 3 is threadedly connected to the inner side of the second ring 2; the first rod 4 is slidably connected to the second ring 2, and the first rod 4 is plugged into and pulled out of the first ring 1; the first ring 1 has a first hole 91 and a second hole 92; the first hole 91 and the second hole 92 are located on the same diameter line of the first ring 1; the end of the first rod 4 is located inside the first hole 91; the auxiliary components are connected to the first ring 1.

[0020] A sealing ring is provided between ring 1 and ring 2 to seal the space between them.

[0021] A sealing ring is provided between the second annulus 2 and the oxygen sensor 3 to seal the connection between them.

[0022] The second ring 2 has an angled opening, making it easier for the oxygen sensor 3 to be inserted into the second ring 2.

[0023] The auxiliary components include a third ring 6, a limiting block 7, a first spring 8, and a second spring 9; the third ring 6 is welded to the outside of the first ring 1, and the third ring 6 contacts the second ring 2; the third ring 6 is provided with several reverse teeth 93; the limiting block 7 is slidably connected to the second ring 2; the first spring 8 is fixed between the limiting block 7 and the second ring 2; the second spring 9 is sleeved on the outside of the first rod 4, one end of the second spring 9 is fixed to the flange of the first rod 4, and the other end of the second spring 9 is fixed to the second ring 2.

[0024] When the car is running, exhaust gas flows in from the left end of exhaust pipe 5 and flows out from the right end. This means the left side of oxygen sensor 3 is the windward side, and the right side is the leeward side. This causes the protective layer on the left side of oxygen sensor 3 to wear out faster, affecting its lifespan, while the right side accumulates more carbon, affecting detection accuracy. Therefore, during regular maintenance, the round rod 4 is manually pulled out of the round hole 91, causing oxygen sensor 3 to rotate 180 degrees. Oxygen sensor 3 then rotates the ring 2 180 degrees, which in turn rotates the round rod 4 180 degrees, aligning it with the round hole 92. Then, the round rod 4 is manually screwed back into the round hole 92, re-aligning it. Ring 2 is fixed onto ring 1, thus re-fixing the oxygen sensor 3. At this time, the windward and leeward sides of the oxygen sensor 3 are interchanged. This can reduce the wear of the protective layer on one side, improve its lifespan, and allow the exhaust gas to blow away and clean the carbon deposits remaining on the oxygen sensor 3, ensuring detection accuracy. During use, during regular maintenance, the windward and leeward sides of the oxygen sensor 3 are manually interchanged by rotating ring 2. This can reduce the wear of the protective layer on one side, improve its lifespan, and allow the exhaust gas to blow away and clean the carbon deposits remaining on the oxygen sensor 3, ensuring detection accuracy. Compared with the conventional interchange method, this method does not require disassembling the oxygen sensor 3, making the operation more convenient.

[0025] During routine maintenance, the windward and leeward sides of the oxygen sensor 3 are manually swapped by rotating ring 2. If this operation is interrupted, the angle and direction of rotation of the oxygen sensor 3 cannot be confirmed when the swapping is resumed, leading to swapping failure. This forces the operator to remove the oxygen sensor 3 from ring 2 to determine its position, significantly reducing efficiency. Therefore, an auxiliary component is installed on ring 1. During the swapping operation, the operator pulls the rod 4 out of the hole 91 and adjusts the spring... The second ring (2) is stretched, and then the oxygen sensor (3) is manually rotated. The oxygen sensor (3) rotates the second ring (2), which in turn rotates the first rod (4) in a circular motion, causing the lower end of the first rod (4) to move away from the first hole (91). At this point, the manual pulling of the first rod (4) stops, and the second spring (9) rebounds, causing the first rod (4) to move downwards. This causes the lower end of the first rod (4) to abut against the upper side of the second ring (2). That is, the second spring (9) presses the first rod (4) against the upper side of the second ring (2) through its elastic force. At the same time, the second ring (2) drives the limiting block (7) to move. Under the limiting action of the reverse tooth (93), when viewed from above... The limiting block 7 can only move counterclockwise. During this process, the reverse tooth 93 forces the limiting block 7 to move to the inside of the second ring 2 and compresses the spring 8. During this period, the manual operation is interrupted. When the manual operation is resumed, under the limiting action of the limiting block 7 and the reverse tooth 93, the manual operation can only drive the oxygen sensor 3 to continue to rotate counterclockwise, and there will be no problem of reverse rotation. Furthermore, when the round rod 4 moves to the top of the second hole 92, the spring 92 rebounds and drives the round rod 4 to move downward, so that the round rod 4 automatically inserts into the second hole 92. In step 2, the fixed operation is completed, meaning that the oxygen sensor 3 will be self-locked after rotating 180 degrees, and the operator does not need to confirm the direction and angle of rotation of the oxygen sensor 3. During use, if the operation of manually exchanging the windward and leeward sides of the oxygen sensor 3 is interrupted, the limit block 7, spring 1 8 and spring 2 9 work together to ensure that the operator can only drive the oxygen sensor 3 to rotate in the previous direction, and it will be self-locked after rotating 180 degrees. The operator does not need to confirm the direction and angle of rotation of the oxygen sensor 3, further improving the convenience of manual operation.

[0026] Example 2, based on Example 1, such as Figure 4 and Figure 7 As shown, it also includes a counting component, which includes a cylinder 10, a second round rod 11, a triangular prism 12, and an elastic sheet 13; two cylinders 10 are fixedly connected to a third ring 6; a second round rod 11 is fixedly connected to a third ring 6, and the second round rod 11 is located inside the cylinder 10; a triangular prism 12 is rotatably connected to each second round rod 11; a mark is provided on each quadrilateral face of the triangular prism 12; two elastic sheets 13 are welded to the inside of each cylinder 10, and the elastic sheets 13 are in contact with the triangular prism 12.

[0027] The end of the round rod 4 is hemispherical, making it easier to insert the round rod 4 into the round hole 91 and the round hole 92.

[0028] Both the circular ring 6 and the limiting block 7 are made of smooth material to reduce frictional resistance.

[0029] Both the round rod 14 and the triangular prism 12 are made of wear-resistant material to improve their lifespan.

[0030] The cylinder 10 is made of transparent material, making it easier for people to observe the triangular prism 12.

[0031] During the interchange operation, the round rod 4 will pass under the triangular prism 12, so as to... Figure 7 For example, the round rod 4 moves from the front to the rear of the triangular prism 12. During this process, the upper end of the round rod 4 passes through the through hole 94 and contacts the lower part of the front inclined surface of the triangular prism 12. Then, it pushes the triangular prism 12 to move, causing the triangular prism 12 to rotate around the round rod 11 and compress the elastic plate 13. This causes the original upper side of the triangular prism 12 to move to the front side and the original rear side of the triangular prism 12 to move to the upper side. Then, the elastic plate 13 rebounds to limit and fix the triangular prism 12 again. That is, every time the round rod 4 passes through the triangular prism 12, the triangular prism 12 will rotate 120 degrees. After that, the number of rotations of the triangular prism 12 can be determined by reading the mark on the triangular prism 12, thereby determining the number of times the oxygen sensor 3 has been replaced, and thus determining the service life of the oxygen sensor 3. In use, the round rod 4 used to fix the oxygen sensor 3 can also be used to drive the triangular prism 12 to rotate, so that the triangular prism 12 counts the replacement operations, which makes it convenient for manual judgment of the service life of the oxygen sensor 3.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that variations may be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automotive-specific oxygen sensor, comprising a circular ring (1); the circular ring (1) is fixedly connected to an exhaust pipe (5); characterized in that: It also includes a second ring (2), an oxygen sensor (3), a first rod (4) and an auxiliary component; the second ring (2) is rotatably connected to the first ring (1); the oxygen sensor (3) is threadedly connected to the second ring (2); the first rod (4) is slidably connected to the second ring (2), and the first rod (4) is plugged into the first ring (1); the first ring (1) has a first hole (91); the first ring (1) has a second hole (92); the first hole (91) and the second hole (92) are located on the same diameter line of the first ring (1); the end of the first rod (4) is located inside the first hole (91); the auxiliary component is connected to the first ring (1); the auxiliary component is used to limit the movement direction of the second ring (2).

2. The automotive-specific oxygen sensor according to claim 1, characterized in that: A sealing ring is provided between the first ring (1) and the second ring (2).

3. An automotive-specific oxygen sensor according to claim 2, characterized in that: A sealing ring is provided between the second ring (2) and the oxygen sensor (3).

4. An automotive-specific oxygen sensor according to claim 3, characterized in that: An oblique angle is provided on the second ring (2).

5. An automotive-specific oxygen sensor according to claim 3, characterized in that: The auxiliary components include a ring three (6), a limiting block (7), a spring one (8) and a spring two (9); a ring three (6) is fixedly connected to a ring one (1); a number of reverse teeth (93) are provided on a ring three (6); a limiting block (7) is slidably connected to a ring two (2); a spring one (8) is fixedly connected to a limiting block (7), and the spring one (8) is fixedly connected to a ring two (2); a spring two (9) is sleeved on the outside of a rod one (4), one end of the spring two (9) is fixedly connected to the flange of the rod one (4), and the other end of the spring two (9) is fixedly connected to a ring two (2).

6. An automotive-specific oxygen sensor according to claim 5, characterized in that: It also includes a counting component, which includes a cylinder (10), a second round rod (11), a triangular prism (12), and an elastic sheet (13); two cylinders (10) are fixedly connected to the ring three (6); a second round rod (11) is provided on the inner side of each cylinder (10), and the second round rod (11) is fixedly connected to the ring three (6); a triangular prism (12) is rotatably connected to each second round rod (11); a mark is provided on each quadrilateral face of the triangular prism (12); several elastic sheets (13) are fixedly connected on the inner side of each cylinder (10), and the elastic sheets (13) are in contact with the triangular prism (12).

7. An automotive-specific oxygen sensor according to any one of claims 1-6, characterized in that: A hemispherical shape is provided at the end of the round rod (4).

8. An automotive-specific oxygen sensor according to claim 5, characterized in that: Both the three rings (6) and the limiting block (7) are set to a smooth material.

9. An automotive-specific oxygen sensor according to claim 8, characterized in that: Both the round rod (4) and the triangular prism (12) are made of wear-resistant material.

10. An automotive-specific oxygen sensor according to claim 9, characterized in that: The cylinder (10) is set to a transparent material.

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