Oxygen sensor

Abstract

The utility model provides an oxygen sensor and belongs to the technical field of sensors. The problem that the tail end wire of an oxygen sensor is twisted and wound due to the fact that the oxygen sensor needs to be turned over in existing thread assembly is solved. The oxygen sensor comprises a pipe body and a sensor body, the pipe body is provided with a mounting part for mounting the sensor body, the sensor body is provided with a connecting part, the lower end of the sensor body is provided with a detection part, and one end of the detection part extends into the pipe body for detection. A positioning part fixedly connected with the pipe body is arranged at the lower end of the connecting part, a limiting assembly used for positioning the connecting part is arranged on the mounting part, and the limiting assembly is composed of a limiting piece, a sliding part and a reset spring. The utility model has the advantage of convenient installation.

Description

Technical Field

[0001] The utility model belongs to the technical field of sensors and relates to an oxygen sensor. Background Art

[0002] Oxygen sensors are essential components for engines that use three-way catalytic converters to reduce exhaust pollution. Traditional oxygen sensors are installed by threading the threads on the outer surface of the oxygen sensor with the screw holes on the installed component. However, the problem with this method is that since the threaded assembly requires the oxygen sensor to rotate, the wires at the tail end of the oxygen sensor may be twisted and entangled. In severe cases, the wires may have poor contact after twisting, and the oxygen sensor may fail due to incorrect installation. Summary of the invention

[0003] The purpose of the utility model is to provide an oxygen sensor which is easy to install in view of the above problems existing in the prior art.

[0004] The purpose of the utility model can be achieved through the following technical solutions: an oxygen sensor, comprising a tube body and a sensor body, characterized in that a mounting portion for mounting the sensor body is provided on the tube body, a connecting portion is provided on the sensor body, a detection portion is provided at the lower end of the sensor body, and one end of the detection portion extends into the tube body for detection, a positioning portion fixedly connected to the tube body is provided at the lower end of the connecting portion, a limiting assembly for positioning the connecting portion is provided on the mounting portion, the limiting assembly consists of a limiting member, a sliding portion and a reset spring, a mounting groove for mounting the limiting assembly is provided on the mounting portion, a limiting groove matching one end of the limiting member is provided on the positioning portion, the sliding portion and the reset spring are both provided in the mounting groove, and the sliding portion slides in the mounting groove under the action of the reset spring, the sliding portion is provided on the limiting member, one end of the limiting member extends out of the mounting portion, and one end of the limiting member extends out of the mounting groove and corresponds to the limiting groove of the positioning portion.

[0005] In the above oxygen sensor, a pull rod is connected to the limit member extending out of the mounting portion, and the sliding portion slides in the mounting groove by pulling the pull rod.

[0006] In the above oxygen sensor, there are two limit assemblies, which are respectively arranged at the left and right ends of the mounting portion, and the number of the limit assemblies corresponds to the number of the limit members.

[0007] In the above oxygen sensor, the positioning portion and the mounting portion are integrally formed, and a groove is provided in the mounting portion for the positioning portion to extend into for positioning.

[0008] Compared with the prior art, the oxygen sensor of the present invention uses a limit assembly to install and disassemble the sensor on the tube body, and changes the original installation method of installing by thread, thereby avoiding twisting and entanglement of the wires at the tail end of the oxygen sensor during installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural schematic diagram of the utility model.

[0010] Figure 2 It is a cross-sectional structural schematic diagram of the utility model.

[0011] In the figure, 1. tube body; 2. sensor body; 3. mounting part; 4. connecting part; 5. detecting part; 6. positioning part; 7. limiting assembly; 8. limiting member; 9. sliding part; 10. reset spring; 11. mounting groove; 12. pull rod. DETAILED DESCRIPTION

[0012] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0013] like Figure 1 , Figure 2 As shown, the oxygen sensor comprises a tube body 1 and a sensor body 2, wherein the tube body 1 is provided with a mounting portion 3 for mounting the sensor body 2, the sensor body 2 is provided with a connecting portion 4, the lower end of the sensor body 2 is provided with a detecting portion 5, and one end of the detecting portion 5 extends into the tube body 1 for detection, the lower end of the connecting portion 4 is provided with a positioning portion 6 fixedly connected to the tube body 1, the mounting portion 3 is provided with a limiting assembly 7 for positioning the connecting portion 4, and the limiting assembly 7 is composed of a limiting member 8, a sliding portion 9 and The mounting portion 3 is composed of a mounting groove 11 for installing the limit assembly 7, the positioning portion 6 is provided with a limit groove matched with one end of the limit member 8, the sliding portion 9 and the reset spring 10 are both provided with the mounting groove 11, and the sliding portion 9 slides in the mounting groove 11 under the action of the reset spring 10, the sliding portion 9 is arranged on the limit member 8, one end of the limit member 8 extends out of the mounting portion 3, and one end of the limit member 8 extends out of the mounting groove 11 and corresponds to the limit groove of the positioning portion 6.

[0014] The installation and disassembly of the sensor body 2 are further described in detail. When the sensor body 2 needs to be installed, the pull rod 12 extending out of the mounting portion 3 is pulled, the reset spring 10 is compressed, the sliding portion 9 slides in the mounting groove 11, and the limit member 8 extends into the mounting groove 11, and the positioning portion 6 of the sensor body 2 is aligned with the slot of the mounting portion 3 and extends therein, the pull rod 12 is released, the reset spring 10 rebounds, and the front end of the limit member 8 extends into the limiting groove of the positioning portion 6 to fix the sensor body 2 on the tube body 1. When the sensor body 2 needs to be disassembled, the pull rod 12 extending out of the mounting portion 3 is pulled, the reset spring 10 is compressed, the sliding portion 9 slides in the mounting groove 11, and the limit member 8 is separated from the limiting groove to release the positioning of the sensor body 2.

[0015] To be more specific, a pull rod 12 is connected to the limiting member 8 extending out of the mounting portion 3 , and the sliding portion 9 slides in the mounting groove 11 by pulling the pull rod 12 .

[0016] To elaborate further, there are two limit assemblies 7 , which are respectively disposed at the left and right ends of the mounting portion 3 , and the number of the limit assemblies 7 corresponds to the number of the limit members 8 .

[0017] To further elaborate, the positioning portion 6 and the mounting portion 3 are integrally formed, and a groove is provided in the mounting portion 3 for the positioning portion 6 to extend into for positioning.

[0018] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0019] Although the terms such as tube body 1, sensor body 2, mounting part 3, connecting part 4, detecting part 5, positioning part 6, position limiting assembly 7, position limiting member 8, sliding part 9, return spring 10, mounting groove 11, and pull rod 12 are used more frequently in this article, the possibility of using other terms is not excluded. The use of these terms is only for more convenient description and explanation of the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. An oxygen sensor, comprising a tube (1) and a sensor body (2), characterized in that: The tube body (1) is provided with a mounting portion (3) for mounting the sensor body (2), the sensor body (2) is provided with a connecting portion (4), the lower end of the sensor body (2) is provided with a detecting portion (5), and one end of the detecting portion (5) extends into the tube body (1) for detection, the lower end of the connecting portion (4) is provided with a positioning portion (6) fixedly connected to the tube body (1), the mounting portion (3) is provided with a limiting component (7) for positioning the connecting portion (4), the limiting component (7) is composed of a limiting member (8), a sliding portion (9) and a return spring (10), and the The mounting portion (3) is provided with a mounting groove (11) for mounting the limiting assembly (7); the positioning portion (6) is provided with a limiting groove matched with one end of the limiting member (8); the sliding portion (9) and the return spring (10) are both provided in the mounting groove (11), and the sliding portion (9) slides in the mounting groove (11) under the action of the return spring (10); the sliding portion (9) is provided on the limiting member (8), one end of the limiting member (8) extends out of the mounting portion (3), and one end of the limiting member (8) extends out of the mounting groove (11) and corresponds to the limiting groove of the positioning portion (6).

2. An oxygen sensor according to claim 1, characterized in that: The limiting member (8) extending outside the mounting portion (3) is connected to a pull rod (12), and the sliding portion (9) slides in the mounting groove (11) by pulling the pull rod (12).

3. An oxygen sensor according to claim 1, characterized in that: There are two limit assemblies (7), which are respectively arranged at the left and right ends of the mounting portion (3), and the number of the limit assemblies (7) corresponds to the number of the limit members (8).

4. An oxygen sensor according to claim 1, characterized in that: The positioning portion (6) and the mounting portion (3) are integrally formed, and a slot is provided in the mounting portion (3) for the positioning portion (6) to extend into for positioning.

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