Shield structure of nitrogen-oxygen sensor

Abstract

The utility model discloses a protective cover structure of a nitrogen-oxygen sensor, which belongs to the field of nitrogen-oxygen sensor protective covers, and comprises a cover seat, a nitrogen-oxygen sensor is mounted in the cover seat, a cover top is mounted at the top end of the cover seat and positioned at the top end of the nitrogen-oxygen sensor, and the cover top is detachably connected with the cover seat; the cover seat comprises a base, a mounting groove is formed in the top end of the base, the mounting groove is matched with the nitrogen-oxygen sensor, a pair of grooves which are in bilateral symmetry is formed in the top end of the base, and the grooves are communicated with the mounting groove. According to the cover seat, the circular hole and the groove are arranged in a staggered manner, and when the nitrogen-oxygen sensor is mounted, a wiring harness connected with the nitrogen-oxygen sensor penetrates through the circular hole and the groove, so that water drops condensed by water vapor flow from the groove to the lower circular hole during working, and the water vapor is prevented from flowing to the nitrogen-oxygen sensor along the wiring harness connected with the nitrogen-oxygen sensor.

Description

Technical Field

[0001] The utility model relates to the field of nitrogen and oxygen sensor shields, and more particularly to a shield structure of a nitrogen and oxygen sensor. Background Art

[0002] A nitrogen oxide sensor is a sensor used to detect the nitrogen oxide content in engine exhaust. A nitrogen oxide sensor is generally composed of a sensing element, a signal processing circuit, and a housing. The sensing element usually uses specific chemical materials and can respond to nitrogen oxides and convert them into electrical signals. The signal processing circuit amplifies, filters, and digitizes the electrical signals output by the sensing element for easy transmission and analysis. However, during use, the nitrogen oxide sensor may be damaged by external influences and needs to be protected.

[0003] Chinese patent application number: CN202321050998.7, provides a nitrogen oxide sensor with an anti-foreign object protective cover structure. This solution reduces the impact of gravel, stones or other foreign objects on the road on the sensor body when the vehicle equipped with the nitrogen oxide sensor is driving on a rugged road, thereby improving the protection performance of the sensor body. However, due to the complexity of the working environment, the nitrogen oxide sensor is easily affected by external factors. For example, in a humid environment, water vapor may condense and flow into the sensor along the sensor wiring harness, thereby affecting the normal operation and service life of the sensor. In addition, falling objects may also damage the sensor, affecting its detection accuracy and reliability. On the other hand, the nitrogen oxide sensor will generate a certain amount of heat when working. If the heat cannot be dissipated in a timely and effective manner, it may cause the sensor performance to deteriorate or even be damaged.

[0004] Therefore, in order to solve the above problems, a protective cover structure of a nitrogen oxygen sensor is proposed. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the purpose of the present utility model is to provide a protective cover structure for a nitrogen oxide sensor, which facilitates the installation of the nitrogen oxide sensor by cooperating with various parts of a cover seat, wherein the cover seat utilizes the staggered arrangement of a circular hole and a groove. When installing the nitrogen oxide sensor, the wiring harness connected to the nitrogen oxide sensor is passed through the circular hole and the groove, so that during operation, water droplets condensed from water vapor flow from the groove to the lower circular hole, preventing water vapor from flowing along the wiring harness connected to the nitrogen oxide sensor onto the nitrogen oxide sensor.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] A protective cover structure for a nitrogen oxygen sensor includes a cover seat, a nitrogen oxygen sensor is installed inside the cover seat, a cover top is installed at the top of the cover seat and located at the top of the nitrogen oxygen sensor, and the cover top is detachably connected to the cover seat; the cover seat includes a base, a mounting groove is opened at the top of the base, and the mounting groove is adapted to the nitrogen oxygen sensor; a pair of left-right symmetrical grooves are opened at the top of the base, and the grooves are connected to the mounting grooves; side covers are fixedly connected to the left and right ends of the base, and a circular hole is opened on the outer wall of the side cover. The opening position is lower than the opening position of the groove; the cover top includes a cover body, the cover body is located at the top of the base, a cover is installed on the top of the cover body, the cover is adapted to the nitrogen oxygen sensor, the cover is installed on the top of the nitrogen oxygen sensor, the top of the cover is fixedly connected with a heat-conducting fin, the bottom end of the heat-conducting fin is in contact with the nitrogen oxygen sensor, the top of the cover and the center of the heat-conducting fin is fixedly connected with a cooling fan, the cooling fan passes through the cover and extends to the interior of the cover body, and the cooling fan is located above the nitrogen oxygen sensor.

[0008] Reference Figure 4 As shown, the front and rear ends of the top of the base are fixedly connected with a connecting plate, a C-shaped opening is opened in the center of the top of the connecting plate, and the C-shaped opening passes through the bottom end of the connecting plate. A plurality of circular holes are opened at the top of the connecting plate and on the left and right sides of the C-shaped opening and are arranged at equal distances, and the circular holes pass through the bottom end of the connecting plate.

[0009] The bottom end of the side cover is provided with a plurality of water-repellent holes which are arranged at equal distances.

[0010] Reference Figure 3 As shown, the bottom end of the cover body is provided with an arc groove adapted to the groove, the arc groove is communicated with the interior of the cover body, the arc groove is consistent in shape with the groove, and the arc groove and the groove are symmetrically distributed.

[0011] The front and rear ends of the cover body are both fixedly connected with mounting plates adapted to the connecting plate. The mounting plates have the same structure as the connecting plate, and the mounting plates are symmetrically distributed with the connecting plate.

[0012] The left and right ends of the cover body are both fixedly connected with protective covers that match the side covers, and the protective covers are located at the top ends of the side covers.

[0013] In summary, the present invention has the following beneficial effects:

[0014] (1) This solution facilitates the installation of the nitrogen oxide sensor by coordinating the various parts of the cover seat. The cover seat utilizes the staggered arrangement of the circular hole and the groove. When installing the nitrogen oxide sensor, the wiring harness connected to the nitrogen oxide sensor is passed through the circular hole and the groove. When the nitrogen oxide sensor is in operation, water droplets condensed from water vapor flow from the groove to the lower circular hole, preventing water vapor from flowing along the wiring harness connected to the nitrogen oxide sensor to the nitrogen oxide sensor.

[0015] (2) This solution provides wrapping protection for the nitrogen oxide sensor by cooperating with the cover top and the cover base, and uses the cover to protect the nitrogen oxide sensor to prevent it from being hit by falling objects. At the same time, the thermal fins conduct the heat generated by the nitrogen oxide sensor when it is working, and conduct the heat to the air for dissipation. The cooling fan also blows air to cool the nitrogen oxide sensor, further enhancing the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the overall structure of this embodiment;

[0017] Figure 2 This is a schematic diagram of the overall split structure in this embodiment;

[0018] Figure 3 This is a schematic diagram of the structure of the hood top being disassembled in this embodiment;

[0019] Figure 4 It is a schematic structural diagram of the cover seat disassembled in this embodiment.

[0020] In the figure, 1, cover base; 2, nitrogen oxide sensor; 3, cover top; 101, base; 102, connecting plate; 103, side cover; 301, cover body; 302, mounting plate; 303, protective cover; 304, cover; 305, thermal fins; 306, cooling fan. DETAILED DESCRIPTION

[0021] The present invention will be described in further detail below with reference to the accompanying drawings.

[0022] Identical components are denoted by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom," "top," "inner," and "outer" refer to directions toward or away from the geometric center of a particular component, respectively.

[0023] Reference Figure 1-Figure 4As shown, a protective cover structure of a nitrogen oxygen sensor in a preferred embodiment of the present invention includes a cover seat 1, a nitrogen oxygen sensor 2 is installed inside the cover seat 1, a cover top 3 is installed at the top of the cover seat 1 and located at the top of the nitrogen oxygen sensor 2, and the cover top 3 is detachably connected to the cover seat 1; the cover seat 1 includes a base 101, a mounting groove is provided at the top of the base 101, and the mounting groove is adapted to the nitrogen oxygen sensor 2, a pair of left-right symmetrical grooves are provided at the top of the base 101, and the grooves are connected to the mounting grooves, and side covers 103 are fixedly connected to the left and right ends of the base 101, and a circular hole is provided on the outer wall of the side cover 103, and the opening position of the circular hole is lower than the recess The opening position of the groove; the cover top 3 includes a cover body 301, the cover body 301 is located at the top of the base 101, and a cover 304 is installed on the top of the cover body 301, the cover 304 is adapted to the nitrogen oxygen sensor 2, and the cover 304 is covered on the top of the nitrogen oxygen sensor 2, and the top of the cover 304 is fixedly connected with a thermal fin 305, and the bottom end of the thermal fin 305 is in contact with the nitrogen oxygen sensor 2, and the top of the cover 304 and the center of the thermal fin 305 are fixedly connected with a cooling fan 306, the cooling fan 306 passes through the cover 304 and extends to the interior of the cover body 301, and the cooling fan 306 is located above the nitrogen oxygen sensor 2.

[0024] Reference Figure 4 As shown, the front and rear ends of the top of the base 101 are fixedly connected to a connecting plate 102, a C-shaped opening is opened in the center of the top of the connecting plate 102, and the C-shaped opening passes through the bottom end of the connecting plate 102. A plurality of circular holes are opened on the top of the connecting plate 102 and on the left and right sides of the C-shaped opening and are arranged at equal distances, and the circular holes pass through the bottom end of the connecting plate 102.

[0025] The bottom end of the side cover 103 is provided with a plurality of drainage holes which are arranged at equal intervals.

[0026] Reference Figure 3 As shown, the bottom end of the cover body 301 is provided with an arc groove adapted to the groove, the arc groove is communicated with the interior of the cover body 301, the arc groove has the same shape as the groove, and the arc groove and the groove are symmetrically distributed.

[0027] The front and rear ends of the cover body 301 are fixedly connected with mounting plates 302 adapted to the connecting plate 102 . The mounting plates 302 have the same structure as the connecting plate 102 , and are symmetrically distributed with the connecting plate 102 .

[0028] The left and right ends of the cover body 301 are fixedly connected with protective covers 303 adapted to the side cover 103 , and the protective covers 303 are located at the top of the side cover 103 .

[0029] Specific implementation process: First, the nitrogen oxygen sensor 2 is placed in the installation groove of the base 101 of the cover seat 1. Next, pass the wiring harness connected to the nitrogen oxygen sensor 2 through the circular hole on the outer wall of the side cover 103 and the groove on the top of the base 101. The staggered arrangement of the circular hole and the groove ensures that during operation, the water droplets formed by condensation of water vapor on the wiring harness can flow from the groove to the lower circular hole, thereby effectively preventing water vapor from flowing along the wiring harness to the nitrogen oxygen sensor 2. Then, place the cover body 301 of the cover top 3 on the top of the base 101, so that the arc-shaped groove at the bottom end of the cover body 301 matches the groove on the base 101 to limit the position of the wiring harness and prevent the wiring harness from displacement. At the same time, the mounting plates 302 at the front and rear ends of the cover body 301 correspond to the connecting plates 102 at the front and rear ends of the base 101. Since the mounting plates 302 and the connecting plates 102 have the same structure and are symmetrically distributed, they can be fixed by a suitable connection method to ensure that the cover top 3 is firmly connected to the cover base 1. The cover cover 304 of the cover top 3 is installed on the top of the nitrogen oxygen sensor 2 The end is used to protect the nitrogen oxygen sensor 2 to prevent falling objects from hitting the sensor. The heat-conducting fins 305 on the top of the cover 304 are in contact with the nitrogen oxygen sensor 2, so they can promptly conduct the heat generated by the nitrogen oxygen sensor 2 during operation and dissipate it into the air for heat dissipation. The cooling fan 306 located at the center of the heat-conducting fins 305 passes through the cover 304 and extends to the inside of the cover body 301, and is located above the nitrogen oxygen sensor 2. After being turned on, it can blow air to cool the nitrogen oxygen sensor 2, further enhancing the heat dissipation effect. In addition, the multiple equally spaced hydrophobic holes opened at the bottom of the side cover 103 can further discharge moisture when water vapor enters the protective cover structure. The protective covers 303 at the left and right ends of the cover body 301 are located at the top of the side cover 103 and are adapted to the side cover 103, so as to protect the side cover 103, prevent debris or rainwater from entering the inside of the protective side cover 103, and enhance the stability of the entire protective cover structure.

[0030] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A protective cover structure for a nitrogen and oxygen sensor, comprising a cover seat (1), characterized in that: A nitrogen oxide sensor (2) is installed inside the cover seat (1), a cover top (3) is installed at the top of the cover seat (1) and located at the top of the nitrogen oxide sensor (2), and the cover top (3) is detachably connected to the cover seat (1); The cover seat (1) includes a base (101), a top end of the base (101) is provided with a mounting groove, the mounting groove is adapted to the nitrogen oxide sensor (2), a top end of the base (101) is provided with a pair of left-right symmetrical grooves, the grooves are communicated with the mounting grooves, the left and right ends of the base (101) are fixedly connected to side covers (103), the outer wall of the side cover (103) is provided with a circular hole, and the opening position of the circular hole is lower than the opening position of the groove; The cover top (3) includes a cover body (301), the cover body (301) is located at the top of the base (101), a cover (304) is installed at the top of the cover body (301), the cover (304) is adapted to the nitrogen oxide sensor (2), the cover (304) is installed on the top of the nitrogen oxide sensor (2), the top of the cover (304) is fixedly connected with a heat conducting fin (305), the bottom end of the heat conducting fin (305) is in contact with the nitrogen oxide sensor (2), the top of the cover (304) and the center of the heat conducting fin (305) are fixedly connected with a cooling fan (306), the cooling fan (306) passes through the cover (304) and extends to the inside of the cover body (301), and the cooling fan (306) is located above the nitrogen oxide sensor (2).

2. The protective cover structure of a nitrogen oxide sensor according to claim 1, characterized in that: The front and rear ends of the top of the base (101) are fixedly connected to a connecting plate (102); a C-shaped opening is provided at the center of the top of the connecting plate (102); the C-shaped opening passes through the bottom of the connecting plate (102); a plurality of circular holes are provided at the top of the connecting plate (102) and on both sides of the C-shaped opening and are arranged at equal intervals; the circular holes pass through the bottom of the connecting plate (102).

3. The protective cover structure of a nitrogen oxide sensor according to claim 1, characterized in that: The bottom end of the side cover (103) is provided with a plurality of water-repellent holes which are arranged at equal intervals.

4. The protective cover structure of a nitrogen oxide sensor according to claim 1, characterized in that: The bottom end of the cover body (301) is provided with an arc-shaped groove adapted to the groove, the arc-shaped groove is communicated with the interior of the cover body (301), the arc-shaped groove is consistent with the groove in shape, and the arc-shaped groove and the groove are symmetrically distributed.

5. The protective cover structure of a nitrogen oxide sensor according to claim 4, characterized in that: The front and rear ends of the cover body (301) are both fixedly connected with mounting plates (302) adapted to the connecting plate (102); the mounting plates (302) and the connecting plate (102) have the same structure, and the mounting plates (302) and the connecting plate (102) are symmetrically distributed.

6. The protective cover structure of a nitrogen oxide sensor according to claim 5, characterized in that: The left and right ends of the cover body (301) are both fixedly connected with protective covers (303) adapted to the side covers (103), and the protective covers (303) are located at the top of the side covers (103).

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