Nitrogen-oxygen sensor mounting box and nitrogen-oxygen sensor

Abstract

The utility model relates to the field of sensors, and provides a nitrogen-oxygen sensor mounting box and a nitrogen-oxygen sensor.The nitrogen-oxygen sensor mounting box comprises an upper box body, a bottom cover, at least two clamping lugs and a pressing plate with the elastic deformation capacity, the upper box body is provided with a limiting groove, and the two clamping lugs are connected to the two sides of the bottom cover; a clamping groove is formed in one side, deviating from the limiting groove, of the upper box body; one end of the pressing plate is connected to the side wall, corresponding to the limiting groove, of the upper box body, a gap is reserved between the pressing plate and the side wall, corresponding to the limiting groove, of the upper box body, and the bottom cover is provided with a pressing groove corresponding to the pressing plate; when the upper box body is matched with the bottom cover, the bottom cover extends into the upper box body, when the bottom cover enters, the bottom cover presses the pressing plate, when the bottom cover abuts against the side wall, corresponding to the limiting groove, of the upper box body, the pressing plate abuts against the bottom cover due to the elastic deformation capacity, the clamping lugs are clamped to the clamping grooves, and the upper box body and the bottom cover can be conveniently installed in place and stably.

Description

Technical Field

[0001] The present application relates to the technical field of sensors, and in particular to a nitrogen oxygen sensor installation box and a nitrogen oxygen sensor. Background Art

[0002] Nitrogen oxides are produced during the driving of a car. At this time, a nitrogen oxide sensor is needed to detect and monitor the nitrogen oxide content.

[0003] The nitrogen oxide sensor includes a mounting box and a nitrogen oxide sensor electronic control unit. During installation, the nitrogen oxide sensor electronic control unit needs to be encapsulated in the mounting box. The mounting box includes an upper box body and a bottom cover. During installation, the nitrogen oxide sensor electronic control unit is placed and installed in the upper box body, the bottom cover is buckled with the upper box body, and then the bottom cover and the upper box body are fixed by screwing to install the nitrogen oxide sensor electronic control unit.

[0004] However, when the bottom cover and the upper box body are installed by screwing, the installation is more troublesome, and if the bolts are screwed in too much, it is easy to cause the bottom cover to deform and squeeze the nitrogen oxide sensor electronic control unit. If the bolts are not screwed in properly, the upper box body and the bottom cover will become loose, causing the nitrogen oxide sensor electronic control unit to easily collide internally.

[0005] Therefore, it is a problem that needs to be solved to study a nitrogen oxygen sensor installation box that can easily and stably install the upper box body and the bottom cover in place. Utility Model Content

[0006] To ensure that the upper box body and the bottom cover of the nitrogen oxygen sensor installation box can be easily installed in place.

[0007] On the one hand, the present application provides a nitrogen oxygen sensor installation box, which adopts the following technical solution:

[0008] A nitrogen oxygen sensor installation box comprises an upper box body, a bottom cover, at least two snap-on ears and a pressing plate with elastic deformation capability, wherein the upper box body is provided with a limiting groove, the two snap-on ears are connected to the two sides of the bottom cover, and the upper box body is provided with a snap-on groove on the side away from the limiting groove; one end of the pressing plate is connected to the side wall of the upper box body corresponding to the limiting groove, a distance is left between the pressing plate and the side wall of the upper box body corresponding to the limiting groove, and the bottom cover is provided with a pressing groove corresponding to the pressing plate;

[0009] When the upper box body cooperates with the bottom cover, the bottom cover extends into the upper box body. When the bottom cover enters, the bottom cover presses the pressing plate. When the bottom cover abuts against the side wall of the upper box body corresponding to the limiting groove, the pressing plate abuts against the bottom cover due to its elastic deformation ability, and the snap-on ear is snapped into the snap-on groove.

[0010] By adopting the above technical scheme, the position where the bottom cover extends into the upper box body can be limited by the limiting groove, so that the bottom cover can be easily installed in place, and the bottom cover and the upper box body can be fixed by the snap-fitting ear being snap-fitted into the snap-fitting groove. The setting of the pressing plate and the pressing groove can guide the position where the bottom cover extends into the box body, and due to the elastic deformation ability of the pressing plate, it abuts against the bottom cover, which can assist the snap-fitting ear to connect the bottom cover and the upper box body together more stably; therefore, the upper box body and the bottom cover can be easily installed in place, and the upper box body and the bottom cover can also be stably connected.

[0011] Optionally, it also includes a snap-in block, which is arranged in a one-to-one correspondence with the snap-in ear, and the snap-in block is connected to one side of the snap-in ear. The upper box body is provided with a fixing groove, and the fixing groove and the snap-in groove are interconnected, and the opening depth of the fixing groove is greater than the opening depth of the snap-in groove; when the upper shell body is matched with the bottom cover, the connecting ear is snapped into the snap-in groove, and the snap-in block is snapped into the fixing groove.

[0012] By adopting the above technical solution, through the cooperation of the clamping block and the fixing groove, the connection between the bottom cover and the upper box body is made more stable, so that the electronic control unit of the nitrogen oxide sensor can be installed in the installation box more stably.

[0013] Optionally, the snap-on ear is provided with a deformation groove along the length direction.

[0014] By adopting the above technical solution, the deformation groove can increase the deformation capacity of the snap-in ear, so that when the bottom cover and the upper box body are matched, the snap-in ear can be snapped into the snap-in groove more conveniently.

[0015] Optionally, at least two pressing plates are arranged at intervals along the side wall of the upper box body corresponding to the limiting groove, and the pressing grooves and the pressing plates are opened in a one-to-one correspondence.

[0016] By adopting the above technical solution, the upper box body and the bottom cover can be connected more stably.

[0017] Optionally, the pressing plate is provided with a guide strip along the length direction, and a guide groove is provided on a side wall of the bottom cover corresponding to the pressing groove, and when the upper box body is matched with the bottom cover, the guide strip extends into the guide groove.

[0018] By adopting the above technical solution, the extension direction of the bottom cover can be guided by the guide bar and the guide groove. At the same time, when the pressing plate abuts against the bottom cover, the cooperation of the guide bar and the guide groove can limit the bottom cover, reducing the possibility of misalignment of the bottom cover, so that the bottom cover and the upper box body can be installed more stably.

[0019] Optionally, at least two guide bars are arranged at intervals, and the guide grooves are arranged in one-to-one correspondence with the guide bars.

[0020] By adopting the above technical solution, the bottom cover can be better guided, and the pressing plate can accurately enter the pressing groove, so that the bottom cover and the upper box body are better aligned, and the contact area between the pressing plate and the bottom cover can be increased, increasing the friction force, so that a more stable connection can be achieved.

[0021] Optionally, a sealing ring is further included, wherein the sealing ring is connected to the wall surface of the upper box body corresponding to the limiting groove, and when the upper box body is matched with the bottom cover, the bottom cover extends into the upper box body and abuts against the sealing ring.

[0022] By adopting the above technical solution, the bottom cover abuts against the sealing ring, so that the connection between the bottom cover and the upper box body is more stable and tight, so as to better protect the electronic control unit of the nitrogen oxide sensor.

[0023] On the other hand, the present application also provides a nitrogen oxygen sensor, which adopts the following technical solution:

[0024] A nitrogen oxygen sensor comprises the above-mentioned nitrogen oxygen sensor installation box and a nitrogen oxygen sensor electronic control unit, wherein the nitrogen oxygen sensor electronic control unit is installed in the nitrogen oxygen sensor installation box.

[0025] By adopting the above technical solution, the electronic control unit of the nitrogen oxide sensor can be more stably installed in the nitrogen oxide sensor installation box, and the electronic control unit of the nitrogen oxide sensor can be better protected.

[0026] In summary, the present application includes at least one of the following beneficial effects:

[0027] 1. The limiting groove can limit the position where the bottom cover extends into the upper box body, so that the bottom cover can be easily installed in place. The bottom cover and the upper box body can be fixed by the snap-fitting ear snapping into the snap-fitting groove. The setting of the pressing plate and the pressing groove can guide the position where the bottom cover extends into the box body. Due to the elastic deformation ability of the pressing plate, it abuts against the bottom cover, which can assist the snap-fitting ear to more stably connect the bottom cover and the upper box body together. Therefore, the upper box body and the bottom cover can be easily installed in place, and the upper box body and the bottom cover can also be stably connected.

[0028] 2. Through the cooperation of the clamping block and the fixing groove, the connection between the bottom cover and the upper box body is made more stable, so that the electronic control unit of the nitrogen oxide sensor can be installed in the installation box more stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 1 is an exploded schematic diagram of a nitrogen oxygen sensor installation box according to an embodiment of the present application;

[0030] Figure 2 1 is a cross-sectional schematic diagram showing the cooperation between the connecting ear and the upper box body in the nitrogen oxygen sensor installation box of the embodiment of the present application;

[0031] Figure 3 is an exploded schematic diagram of the nitrogen oxygen sensor installation box from another perspective of the embodiment of the present application;

[0032] Figure 4 yes Figure 3 The enlarged schematic diagram of point A in the middle;

[0033] Figure 5 Schematic diagram of the explosion of the nitrogen oxygen sensor according to the embodiment of the present application.

[0034] Explanation of the accompanying drawings: 1. Upper box body; 2. Bottom cover; 3. Snap-on ear; 4. Snap-on groove; 5. Snap-on block; 6. Fixing groove; 7. Deformation groove; 8. Limiting groove; 9. Sealing ring; 10. Pressing plate; 11. Pressing groove; 12. Guide strip; 13. Guide groove; 14. Electronic control unit of nitrogen oxide sensor. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-5 This application is described in further detail.

[0036] The present application embodiment discloses a nitrogen oxygen sensor installation box. Figure 1 The nitrogen oxide sensor installation box includes an upper box body 1, a bottom cover 2, and at least two snap-on ears 3, the two snap-on ears 3 are connected to both sides of the bottom cover 2, and the upper box body 1 is provided with a snap-on groove 4. When installing, the bottom cover 2 is installed on the upper box body 1. In this embodiment, the nitrogen oxide sensor electronic control unit is installed in the bottom cover 2 and the upper box body 1, and the two snap-on ears 3 are snap-on in the snap-on groove 4, that is, the snap-on ears 3 are snap-on with the wall surface of the upper box body 1 corresponding to the snap-on groove 4, so as to limit the movement between the bottom cover 2 and the upper box body 1, and fix the bottom cover 2 to the upper box body 1.

[0037] In some embodiments, the snap-in ear 3 is provided with a deformation groove 7 along the length direction, so as to increase the deformation capacity of the snap-in ear 3 and make it more convenient to snap the snap-in ear 3 into the snap-in groove 4 .

[0038] Reference Figure 2In some embodiments, the nitrogen oxygen sensor installation box further includes a clamping block 5, which is arranged in a one-to-one correspondence with the clamping ear 3, and the clamping block 5 is connected to one side of the clamping ear 3. In this embodiment, the clamping block 5 and the clamping ear 3 are integrally formed. The upper box body 1 is provided with a fixing groove 6, and the fixing groove 6 and the clamping groove 4 are mutually connected, and the opening depth of the fixing groove 6 is greater than the opening depth of the clamping groove 4, and the fixing groove 6 is used to clamp on the clamping block 5. When the upper box body 1 is matched with the bottom cover 2, the clamping ear 3 is clamped in the clamping groove 4, and the clamping block 5 is clamped into the fixing groove 6, so that the clamping ear 3 can clamp the bottom cover 2 to the upper box body 1 more stably, so that the connection between the bottom cover 2 and the upper box body 1 is more stable.

[0039] Reference Figure 3 A limiting groove 8 is provided on one side of the upper box body 1 away from the clamping groove 4. The limiting groove 8 is used to limit the position of the bottom cover 2 extending into the upper box body 1, so that the bottom cover 2 and the upper box body 1 can be easily installed in place, so as to avoid the bottom cover 2 from squeezing the nitrogen oxide sensor electronic control unit 14 as much as possible, and the nitrogen oxide sensor electronic control unit can be better protected.

[0040] In some embodiments, the nitrogen oxide sensor installation box further includes a sealing ring 9, which is connected to the wall surface of the upper box body 1 corresponding to the limiting groove 8, and the sealing ring 9 is bonded to the upper box body 1. When the upper box body 1 is matched with the bottom cover 2, the bottom cover 2 extends into the upper box body 1 and abuts against the sealing ring 9. The sealing ring 9 can better seal the bottom cover 2 and the upper box body 1, and when the sealing ring 9 is squeezed, the connection stability between the bottom cover 2 and the upper box body 1 can also be increased.

[0041] The nitrogen oxide sensor installation box also includes a pressing plate 10 with elastic deformation ability. In this embodiment, the pressing plate 10 is made of plastic material with elastic deformation ability. One end of the pressing plate 10 is connected to the side wall of the upper box body 1 corresponding to the limiting groove 8. There is a gap between the pressing plate 10 and the side wall of the upper box body 1 corresponding to the limiting groove 8, so that the pressing plate 10 can be pressed. The bottom cover 2 is provided with a pressing groove 11 corresponding to the pressing plate 10, and the pressing groove 11 is for the pressing plate 10 to extend into, and the opening depth of the pressing groove 11 is slightly smaller than the distance between the side where the pressing plate 10 abuts against the bottom cover 2 and the inner wall of the upper box body 1, so that the pressing plate 10 can abut against the bottom cover 2 more stably.

[0042] When the upper box body 1 is matched with the bottom cover 2, the bottom cover 2 extends into the upper box body 1. When the bottom cover 2 enters, the bottom cover 2 will press the pressing plate 10, so that the bottom cover 2 enters along the pressing plate 10. When the bottom cover 2 abuts against the side wall of the upper box body 1 corresponding to the limiting groove 8, the bottom cover 2 is installed in place. The pressing plate 10 recovers toward the bottom cover 2 due to its elastic deformation ability and abuts against the bottom cover 2. The snap-fit ​​ear 3 is snapped into the snap-fit ​​groove 4. Through the cooperation of the snap-fit ​​ear 3 and the pressing plate 10, the connection between the bottom cover 2 and the upper box body 1 can be more stable.

[0043] In some embodiments, at least two pressing plates 10 are arranged at intervals along the side walls of the upper box body 1 corresponding to the limiting grooves 8. In this embodiment, four pressing plates 10 are arranged, which are respectively arranged on the four inner side walls of the upper box body 1; the pressing grooves 11 are opened one by one corresponding to the pressing plates 10, that is, four pressing grooves 11 are also arranged, which respectively correspond to the positions of the pressing plates 10. The four sides of the bottom cover 2 and the upper box body 1 can be pressed by the pressing plates 10, so that the force is evenly applied, and the bottom cover 2 can be installed on the upper box body 1 more stably.

[0044] Reference Figure 4 In some embodiments, the pressing plate 10 is provided with a guide bar 12 along the length direction, and the guide bar 12 plays a guiding role when the bottom cover 2 is pressed into the upper box body 1. A guide groove 13 is provided on the side wall of the bottom cover 2 corresponding to the pressing groove 11. When the upper box body 1 and the bottom cover 2 are matched, the guide bar 12 extends into the guide groove 13, and can better limit the movement of the bottom cover 2, so that the bottom cover 2 can be more stably connected to the upper box body 1, and the guide bar 12 and the guide groove 13 can increase the contact area between the pressing block and the bottom cover 2, increase the friction between the two, so as to enhance the connection stability between the bottom cover 2 and the box body.

[0045] In some embodiments, at least two guide bars 12 are arranged at intervals, and the guide grooves 13 are arranged one-to-one corresponding to the guide bars 12, so as to increase the contact area between the pressing block and the bottom cover 2, increase the friction force, and make the connection more stable.

[0046] The implementation principle of a nitrogen oxygen sensor installation box of the embodiment of the present application is as follows: the limiting groove 8 can limit the insertion position of the bottom cover 2 into the upper box body 1, so that the bottom cover 2 can be easily installed in place, and the bottom cover 2 and the upper box body 1 can be fixed by the snap-fitting ear 3 being snap-fitted into the snap-fitting groove 4. The setting of the pressing plate 10 and the pressing groove 11 can guide the position where the bottom cover 2 is inserted into the box body, and due to the elastic deformation ability of the pressing plate 10, it abuts against the bottom cover 2, which can assist the snap-fitting ear 3 to more stably connect the bottom cover 2 and the upper box body 1 together; therefore, the upper box body 1 and the bottom cover 2 can be easily installed in place, and the upper box body 1 and the bottom cover 2 can also be stably connected.

[0047] The present application also discloses a nitrogen oxygen sensor. Figure 5 The nitrogen oxygen sensor includes the above-mentioned nitrogen oxygen sensor installation box and the nitrogen oxygen sensor electronic control unit 14, and the nitrogen oxygen sensor electronic control unit 14 is installed in the nitrogen oxygen sensor installation box. The nitrogen oxygen sensor installation box makes the installation of the nitrogen oxygen sensor electronic control unit 14 more stable, so that the nitrogen oxygen sensor electronic control unit 14 can be better protected.

[0048] The implementation principle of a nitrogen oxide sensor in an embodiment of the present application is to make the installation of the nitrogen oxide sensor electronic control unit 14 by the nitrogen oxide sensor mounting box more stable, so as to better protect the nitrogen oxide sensor electronic control unit 14.

[0049] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A nitrogen oxygen sensor installation box, characterized in that: The invention comprises an upper box body (1), a bottom cover (2), at least two snap-on ears (3) and a pressing plate (10) with elastic deformation capability, wherein the upper box body (1) is provided with a limiting groove (8), the two snap-on ears (3) are connected to two sides of the bottom cover (2), and a snap-on groove (4) is provided on a side of the upper box body (1) away from the limiting groove (8); one end of the pressing plate (10) is connected to a side wall of the upper box body (1) corresponding to the limiting groove (8), a distance is left between the pressing plate (10) and the side wall of the upper box body (1) corresponding to the limiting groove (8), and the bottom cover (2) is provided with a pressing groove (11) corresponding to the pressing plate (10); When the upper box body (1) is matched with the bottom cover (2), the bottom cover (2) extends into the upper box body (1). When the bottom cover (2) enters, the bottom cover (2) presses the pressing plate (10). When the bottom cover (2) abuts against the side wall of the upper box body (1) corresponding to the limiting groove (8), the pressing plate (10) abuts against the bottom cover (2) due to its elastic deformation ability, and the snap-on ear (3) is snap-fitted into the snap-on groove (4).

2. A nitrogen oxygen sensor installation box according to claim 1, characterized in that: The invention also comprises a snap-in block (5), wherein the snap-in block (5) is arranged in a one-to-one correspondence with the snap-in ear (3), and the snap-in block (5) is connected to one side of the snap-in ear (3). The upper box body (1) is provided with a fixing groove (6), and the fixing groove (6) and the snap-in groove (4) are mutually connected, and the opening depth of the fixing groove (6) is greater than the opening depth of the snap-in groove (4); when the upper box body (1) is matched with the bottom cover (2), the snap-in ear (3) is snap-fitted to the snap-in groove (4), and the snap-in block (5) is snap-fitted into the fixing groove (6).

3. A nitrogen oxygen sensor installation box according to claim 1 or 2, characterized in that: The snap-on ear (3) is provided with a deformation groove (7) along the length direction.

4. The nitrogen oxide sensor installation box according to claim 1, characterized in that: At least two pressing plates (10) are arranged at intervals along the side wall of the upper box body (1) corresponding to the limiting groove (8), and the pressing grooves (11) are opened in a one-to-one correspondence with the pressing plates (10).

5. The nitrogen oxide sensor installation box according to claim 4, characterized in that: The pressing plate (10) is provided with a guide strip (12) along the length direction, and a guide slot (13) is provided on the side wall of the bottom cover (2) corresponding to the pressing slot (11); when the upper box body (1) is matched with the bottom cover (2), the guide strip (12) extends into the guide slot (13).

6. A nitrogen oxygen sensor installation box according to claim 5, characterized in that: At least two of the guide bars (12) are arranged at intervals, and the guide grooves (13) are arranged in a one-to-one correspondence with the guide bars (12).

7. The nitrogen oxygen sensor installation box according to claim 1, characterized in that: It also includes a sealing ring (9), which is connected to the wall surface of the upper box body (1) corresponding to the limiting groove (8), and when the upper box body (1) is matched with the bottom cover (2), the bottom cover (2) extends into the upper box body (1) and abuts against the sealing ring (9).

8. A nitrogen oxygen sensor, characterized in that: It comprises a nitrogen oxide sensor installation box and a nitrogen oxide sensor electronic control unit (14) as claimed in any one of claims 1 to 7, wherein the nitrogen oxide sensor electronic control unit (14) is installed in the nitrogen oxide sensor installation box.

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