Oxygen sensor mounting structure

Abstract

The utility model discloses an oxygen sensor mounting structure, which belongs to the field of oxygen sensors and comprises a first connecting part arranged on a carrier and a second connecting part arranged on an oxygen sensor body and used for being inserted into the first connecting part, the oxygen sensor body comprises a first connecting part and a second connecting part, the first connecting part is in threaded connection with the second connecting part, the second connecting part is rotationally connected with the sensor body, the oxygen sensor body axially penetrates through the second connecting part, and a limiting structure used for limiting axial movement of the oxygen sensor body is arranged between the oxygen sensor body and the second connecting part. According to the oxygen sensor mounting structure, by arranging the first connecting part, the second connecting part and the limiting structure, the problem of cable damage caused by winding of a cable on the top of the oxygen sensor during mounting of the oxygen sensor is solved, the utilization rate of the oxygen sensor is increased, meanwhile, rapid lubrication between the first connecting part and the second connecting part is achieved by forming the through hole, and the service life of the oxygen sensor is prolonged. The service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of oxygen sensors, and particularly to an installation structure of an oxygen sensor. Background Technique

[0002] The oxygen sensor is a standard configuration on automobiles. It uses a ceramic sensitive element to measure the oxygen potential in the automobile exhaust pipe, calculates the corresponding oxygen concentration based on the chemical equilibrium principle, and achieves the measurement element for monitoring and controlling the combustion air-fuel ratio to ensure product quality and compliance of exhaust emissions. The oxygen sensor is widely used in the atmosphere control of various furnace bodies such as coal combustion, oil combustion, and gas combustion. It is currently the best way to measure the combustion atmosphere, with the advantages of simple structure, rapid response, easy maintenance, convenient use, accurate measurement, etc.

[0003] The Chinese utility model patent with the publication number CN207161184U discloses an installation structure of an oxygen sensor. In this patent, a convex portion is provided on the outer wall of the extension portion of the oxygen sensor, and a through groove is provided in the second connection portion of the carrier. When installing the two, it is necessary to align the convex portion with the through groove and pass through the through groove, so as to initially ensure the coaxial docking of the two, and then rotate and tighten with a power tool; the above structure is beneficial to forcing the operator's attention to be concentrated, improving the installation accuracy, avoiding the damage of the screw teeth caused by skew placement, reducing the loss of parts. At the same time, it also reasonably increases the difference of the oxygen sensor structure, reduces the universality of the oxygen sensor installation structure, and reduces the possibility of being stolen. However, in the installation of the oxygen sensor in this patent, the oxygen sensor is threadedly assembled with the screw hole on the installed component through the thread provided on the outer peripheral surface of the oxygen sensor. However, since the threaded assembly requires the turnover of the oxygen sensor, it is easy to cause the situation that the wire at the tail end of the oxygen sensor is twisted and wound. In severe cases, there will be poor contact of the wire after twisting, and the oxygen sensor fails due to incorrect installation.

[0004] Therefore, the utility model provides an installation structure of an oxygen sensor to solve the above problems. Content of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] The utility model provides an installation structure of an oxygen sensor, aiming to solve the problems in the background technique that in the installation of the existing oxygen sensor, the oxygen sensor is threadedly assembled with the screw hole on the installed component through the thread provided on the outer peripheral surface of the oxygen sensor. However, since the threaded assembly requires the turnover of the oxygen sensor, it is easy to cause the situation that the wire at the tail end of the oxygen sensor is twisted and wound. In severe cases, there will be poor contact of the wire after twisting, and the oxygen sensor fails due to incorrect installation.

[0007] (2) Technical Solutions

[0008] To achieve the above object, the utility model provides the following technical solution: An oxygen sensor mounting structure, including a first connecting portion provided on a carrier and a second connecting portion provided on an oxygen sensor body for inserting into the first connecting portion, and the first connecting portion is screwed with the second connecting portion; in use, first, the oxygen sensor body is slidably clamped along the first connecting portion opened on the top of the carrier. At this time, in order to avoid the connection wire at the top of the oxygen sensor body being easily wound when directly screwing the oxygen sensor body, the reasonable installation can be achieved by rotating the second connecting portion rotatably connected to the oxygen sensor body.

[0009] In order to achieve rapid installation while preventing the oxygen sensor body from rotating; the second connecting portion is rotatably connected to the sensor body, the oxygen sensor body axially penetrates through the second connecting portion, and a limiting structure for restricting the axial movement of the oxygen sensor body is provided between the oxygen sensor body and the second connecting portion; by rotating the second connecting portion to screw it inside the first connecting portion, the installation and fixation of the first connecting portion and the second connecting portion are achieved.

[0010] Preferably, in order to achieve the reasonable fixation of the oxygen sensor and the second connecting portion; the limiting structure includes limiting rods symmetrically arranged inside the oxygen sensor body, limiting grooves opened on the inner wall of the second connecting portion, and a driving member provided inside the sensor body for driving the limiting rods to move radially along the oxygen sensor body into the limiting grooves, and the limiting rods are slidably connected to the second connecting portion; the reasonable limitation can be achieved by using the limiting structure, and after rotation, the limiting rods are driven by the driving member to slide and insert into the limiting grooves to fix the oxygen sensor body and the second connecting portion.

[0011] Preferably, in order to achieve the reasonable insertion of the limiting rods; the limiting grooves are annular grooves opened on the inner surface wall of the second connecting portion; it is achieved by opening an annular groove with a box-shaped interface shape.

[0012] Preferably, in order to achieve the automatic driving of the movement of the limiting rods; the driving member includes a telescopic rod fixedly arranged on one side of the limiting rod away from the limiting groove and fixedly connected to the central position inside the oxygen sensor body, and a spring sleeved on the telescopic rod, and both ends of the spring are fixedly connected to the limiting rod and the oxygen sensor body respectively; when the second connecting portion rotates to the position where it coincides with the limiting groove of the oxygen sensor body, the spring's own elasticity can be used to drive the telescopic rod to extend, and then drive the entire limiting rod to slide and insert into the limiting groove to achieve reasonable and rapid fixation.

[0013] Preferably, in order to avoid the problem of jamming and wear between the second connecting part and the first connecting part during the rotation of the second connecting part; the second connecting part is composed of a top rotating block and a bottom thread, and a through hole for facilitating the pouring of lubricating oil is provided at the top of the second connecting part; the lubricating oil can be introduced into the connecting part along the through hole to achieve reasonable connection.

[0014] (III) Advantageous Effects

[0015] The oxygen sensor installation structure realizes the problem of avoiding damage to the cable caused by winding of the top cable of the oxygen sensor during the installation of the oxygen sensor by setting the first connecting part, the second connecting part and the limiting structure, improves the utilization rate of the oxygen sensor, and at the same time achieves rapid lubrication between the first connecting part and the second connecting part by opening a through hole, thereby improving the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG. is a three-dimensional structural schematic diagram of an oxygen sensor installation structure;

[0017] Figure 2 FIG. is a partial structural schematic diagram of an oxygen sensor installation structure;

[0018] Figure 3 FIG. is a cross-sectional structural schematic diagram of an oxygen sensor installation structure;

[0019] In the figure:

[0020] 1. Carrier; 2. Oxygen sensor body; 3. First connecting part;

[0021] 4. Second connecting part; 41. Through hole;

[0022] 5. Limiting structure; 51. Limiting rod; 52. Limiting groove;

[0023] 53. Driving part; 531. Spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] The present invention provides an oxygen sensor installation structure, as Figures 1 - 3As shown in the figure, the oxygen sensor mounting structure includes a first connecting portion 3 provided on the carrier 1 and a second connecting portion 4 provided on the oxygen sensor body 2 for inserting into the first connecting portion 3. The first connecting portion 3 is screwed to the second connecting portion 4. The second connecting portion 4 is rotatably connected to the sensor body 2. The oxygen sensor body 2 axially penetrates through the second connecting portion 4. A limiting structure 5 for restricting the axial movement of the oxygen sensor body 2 is provided between the oxygen sensor body 2 and the second connecting portion 4.

[0026] During use, first, the oxygen sensor body 2 is slidably clamped along the first connecting portion 3 opened at the top of the carrier 1. At this time, in order to avoid the problem that directly screwing the oxygen sensor body 2 easily causes the connection wire at the top of the oxygen sensor body 2 to be wound, the reasonable installation can be achieved by rotating the second connecting portion 4 rotatably connected to the oxygen sensor body 2. By rotating the second connecting portion 4, it is screwed inside the first connecting portion 3 to achieve the installation and fixation of the first connecting portion 3 and the second connecting portion 4.

[0027] Specifically, the limiting structure 5 includes limiting rods 51 symmetrically arranged inside the oxygen sensor body 2, limiting grooves 52 opened on the inner wall of the second connecting portion 4, and a driving member 53 provided inside the sensor body 2 for driving the limiting rods 51 to move radially along the oxygen sensor body 2 into the limiting grooves 52. The limiting rods 51 are slidably connected to the second connecting portion 4. The limiting grooves 52 are annular grooves opened on the inner surface wall of the second connecting portion 4. After the fixation is completed, in order to achieve the reasonable fixation of the oxygen sensor 2 and the second connecting portion 4, the reasonable limiting can be achieved by using the limiting structure 5. After rotation, the driving member 53 is used to drive the limiting rods 51 to slide and insert into the limiting grooves 52 to achieve the fixation of the oxygen sensor body 2 and the second connecting portion 4.

[0028] Among them, in order to achieve reasonable driving; the driving member 53 includes a telescopic rod fixedly arranged on the side of the limiting rod 51 away from the limiting groove 52 and fixedly connected to the central position inside the oxygen sensor body 2, and a spring 531 sleeved on the telescopic rod. The two ends of the spring 531 are respectively fixedly connected to the limiting rod 51 and the oxygen sensor body 2. When the second connecting portion 4 rotates to the position where it coincides with the limiting groove 52 of the oxygen sensor body 2, the self-elasticity of the spring 531 can be used to drive the telescopic rod 532 to extend, and then drive the entire limiting rod 51 to slide and insert into the limiting groove 52 to achieve reasonable and rapid fixation.

[0029] Furthermore, the second connecting portion 4 is composed of a top rotating block and a bottom thread. A through hole 41 for facilitating the pouring of lubricating oil is opened at the top of the second connecting portion 4. In order to avoid the problem of jamming and wear between the second connecting portion 4 and the first connecting portion 3 during the rotation of the second connecting portion 4, the lubricating oil can be introduced along the through hole 41 to make the lubricating oil enter the connecting part to achieve reasonable connection.

[0030] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, making equivalent substitutions or changes, shall be covered by the protection scope of the present utility model.

Claims

1. An oxygen sensor mounting structure, comprising a first connecting portion (3) arranged on a carrier (1) and a second connecting portion (4) arranged on an oxygen sensor body (2) and used for being inserted into the first connecting portion (3), wherein the first connecting portion (3) and the second connecting portion (4) are screwed together; Features: The second connecting portion (4) is rotatably connected to the sensor body (2); The oxygen sensor body (2) axially penetrates the second connecting portion (4), and a limiting structure (5) for limiting axial movement of the oxygen sensor body (2) is provided between the oxygen sensor body (2) and the second connecting portion (4).

2. The oxygen sensor mounting structure according to claim 1, characterized in that: The limiting structure (5) comprises a limiting rod (51) symmetrically arranged inside the oxygen sensor body (2), a limiting groove (52) provided on the inner wall of the second connecting portion (4), and a driving member (53) arranged inside the sensor body (2) for driving the limiting rod (51) to move radially along the oxygen sensor body (2) to the limiting groove (52), and the limiting rod (51) is slidably connected to the second connecting portion (4).

3. The oxygen sensor mounting structure according to claim 2, characterized in that: The limiting groove (52) is an annular groove formed on the inner surface wall of the second connecting portion (4).

4. The oxygen sensor mounting structure according to claim 2, characterized in that: The driving member (53) comprises a telescopic rod fixedly arranged on a side of the limiting rod (51) away from the limiting groove (52) and fixedly connected to the inner center position of the oxygen sensor body (2), and a spring (531) sleeved on the telescopic rod, wherein two ends of the spring (531) are respectively fixedly connected to the limiting rod (51) and the oxygen sensor body (2).

5. The oxygen sensor mounting structure according to claim 4, characterized in that: The second connecting part (4) is composed of a top rotating block and a bottom thread, and a through hole (41) is provided at the top of the second connecting part (4) for pouring lubricating oil.

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