Dual-positioning nitrogen-oxygen sensor shell

Abstract

The utility model discloses a nitrogen oxygen sensor housing with double positioning, which comprises a bottom plate and an upper cover, a mounting groove for accommodating a circuit board is arranged in the lower side surface of the upper cover, and an inner retaining ring plate extending upwards is integrally formed at the edge of the upper side of the bottom plate. An inner ring groove matched with the inner retaining ring plate is formed in the lower side face of the upper cover, the bottom plate and the upper cover are positioned through two positioning assemblies including the inner retaining ring plate, the inner ring groove and the protruding part and the arc-shaped protruding plate respectively, the effects of accurate positioning and shaking avoiding can be effectively achieved during assembly, and on the basis, the inner ring groove matched with the inner retaining ring plate is formed in the bottom plate. According to the utility model, the bottom plate and the upper cover are connected through the lock catch assembly, the assembly is convenient, the maintenance is easy, the production cost is reduced, and the design of the inner ring groove is also convenient for gluing, so that the waterproof and dustproof grade of the product is further improved; according to the utility model, the protective plate is arranged on the upper cover, so that the socket can be protected and prevented from being impacted, and the service life of the socket is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of nitrogen and oxygen sensor technology, and in particular to a dual-positioning nitrogen and oxygen sensor housing. Background Technology

[0002] Nitrogen oxide sensors are commonly used in diesel vehicles to monitor the nitrogen oxide content in exhaust gases, helping the engine management system optimize combustion and reduce emissions.

[0003] Nitrogen-oxygen sensors generally consist of a base plate, a top cover, and a circuit board inside. Currently, the assembly method of the base plate and top cover in nitrogen-oxygen sensors is generally as follows: the base plate is provided with a protruding ring that is embedded in the inner ring groove of the top cover for limiting, and then it is fixed by applying glue.

[0004] However, this assembly method has certain drawbacks. First, the top cover is easily tilted and shaken because it is only limited by the convex ring and the ring groove. Second, the top cover is not subjected to force in the vertical direction. After applying the glue, the staff needs to manually press down the top cover for a period of time to wait for the glue to solidify, which is inconvenient. Therefore, it needs to be improved. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a dual-positioning nitrogen and oxygen sensor housing to solve the problems mentioned in the background section.

[0006] This utility model provides the following technical solution: a dual-positioning nitrogen and oxygen sensor housing, including a base plate and a top cover. The lower side of the top cover is provided with a mounting groove for accommodating a circuit board. An upwardly extending inner buckle plate is integrally formed at the upper edge of the base plate. The lower side of the top cover is provided with an inner ring groove adapted to the inner buckle plate. The inner ring groove is sleeved outside the mounting groove.

[0007] The four corners of the mounting groove protrude inward to form a protrusion, and the upper side of the base plate is provided with four arc-shaped protrusions that are rectangularly distributed and can be attached to the inner arc surface of the protrusion.

[0008] The top cover is pressed against the bottom plate by a locking assembly.

[0009] Preferably, the arc-shaped convex plate extends upward to the upper side of the inner buckle plate.

[0010] Preferably, the locking assembly includes curved plates disposed at the left and right ends of the base plate, the curved plates extending laterally and then bending upward, and a hook plate integrally formed on the vertical side of the curved plates;

[0011] The top cover has protrusions on its left and right sides, and the protrusions have grooves that fit the hook plate.

[0012] Preferably, the hook plate extends laterally and then bends downward so that the outer curved surface of the hook plate is an arc surface.

[0013] Preferably, the bent plate is trapezoidal in side view, and a through groove is provided inside the bent plate, and both the base plate and the bent plate are made of plastic.

[0014] Preferably, the upper side of the top cover is provided with a socket reserved slot communicating with the mounting groove, and two socket reserved slots are arranged in a left-right arrangement, and a limit protrusion ring is provided on the upper side of the top cover outside the socket reserved slot.

[0015] Preferably, the outer edge of the upper side of the top cover is recessed to form an outer ring groove. A protective plate group is provided on the lateral extension of the outer ring groove. Two protective plate groups are provided and distributed on the front and rear sides of the socket reserved groove. The protective plates in the protective plate group are at the same left and right position as the socket reserved groove, and the protective plates extend to the upper side of the top cover and the limiting protrusion ring.

[0016] This utility model provides a dual-positioning nitrogen and oxygen sensor housing, which has the following beneficial effects:

[0017] This utility model includes a base plate and a top cover. The base plate and the top cover are positioned by two sets of positioning components: an inner buckle plate-inner ring groove and a protrusion-arc protrusion plate. During assembly, these components can effectively ensure accurate positioning and prevent shaking. Furthermore, the base plate and the top cover are connected by a locking assembly, which facilitates assembly, maintenance, and reduces production costs. The inner ring groove design also facilitates the application of adhesive, further improving the product's waterproof and dustproof rating.

[0018] This utility model also has a protective plate on the top cover to protect the socket from impact and improve its service life. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the appearance of this utility model;

[0020] Figure 2 yes Figure 1 A bottom view of the upper middle cover;

[0021] Figure 3 yes Figure 1 A schematic diagram of the midsole plate;

[0022] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0023] Figure 5 yes Figure 1 A schematic diagram of the upper and middle covers.

[0024] In the picture:

[0025] 11. Base plate; 12. Top cover; 13. Mounting groove; 14. Inner buckle plate; 15. Inner ring groove; 16. Protrusion; 17. Arc-shaped protrusion; 18. Bend plate; 19. Hook plate; 20. Boss; 21. Groove; 22. Socket reserved groove; 23. Limiting protrusion; 24. Outer ring groove; 25. Protective plate; 26. Through groove. Detailed Implementation

[0026] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] Reference Figures 1-5According to an embodiment of the dual-positioning nitrogen and oxygen sensor housing of the present invention, it includes a base plate 11 and a top cover 12. The lower side of the top cover 12 is provided with a mounting groove 13 for accommodating a circuit board. An upwardly extending inner buckle plate 14 is integrally formed at the upper edge of the base plate 11. The lower side of the top cover 12 is provided with an inner ring groove 15 adapted to the inner buckle plate 14. The inner ring groove 15 is fitted outside the mounting groove 13, thereby positioning the base plate 11 and the top cover 12 mutually.

[0031] In addition, to achieve dual positioning, the four vertical corners of the mounting groove 13 protrude inward to form protrusions 16. The upper side of the base plate 11 is provided with rectangularly distributed arc-shaped protrusions 17 that can fit against the inner arc surface of the protrusions 16 to increase the assembly limit with the upper cover 12 and prevent shaking.

[0032] When the base plate 11 and the top cover 12 are combined, the arc-shaped protrusion 17 first applies to the curved surface of the four protrusions 16 to pre-position the top cover 12. The arc-shaped protrusion 17 extends upward to the upper side of the inner buckle plate 14 to better pre-position. Then the inner buckle plate 14 enters the inner ring groove 15 to fully form the positioning.

[0033] Furthermore, the upper cover 12 is pressed onto the base plate 11 by a locking assembly.

[0034] In this embodiment, the locking assembly includes bent plates 18 disposed at the left and right ends of the base plate 11. The bent plates 18 extend laterally and then bend upward, and a hook plate 19 is integrally formed at the upper edge of the vertical side of the bent plates 18.

[0035] In contrast, the upper cover 12 has protrusions 20 on its left and right sides, and the protrusions 20 have grooves 21 that are adapted to the hook plate 19. The hook plate 19 can abut against the bottom surface of the groove 21, thereby locking the bottom plate 11 and the upper cover 12.

[0036] The hook plate 19 can be further configured such that after extending laterally, the hook plate 19 bends downward, so that the outer curved surface of the hook plate 19 is an arc surface. With this configuration, when the upper cover 12 is fastened downward relative to the bottom plate 11, the lower edge of the upper cover 12 will first adhere to the arc surface of the hook plate 19, so that the bent plate 18 bends outward. After the fastening is completed, the bent plate 18 will return to its original position inward under its own elasticity, and the hook plate 19 will enter the groove 21.

[0037] To improve the elasticity of the bending plate 18, the bending plate 18 is trapezoidal in side view, and a through groove 26 is provided inside the bending plate 18. Both the base plate 11 and the bending plate 18 are made of plastic.

[0038] The upper side of the top cover 12 is provided with a socket reserved slot 22 that communicates with the mounting groove 13. There are two socket reserved slots 22 arranged on the left and right sides. The upper side of the top cover 12 outside the socket reserved slot 22 is provided with a limiting protrusion ring 23. After the circuit board is installed in the top cover 12, the socket can be inserted into the socket reserved slot 22 and connected to the circuit board, thereby facilitating data transmission. The limiting protrusion ring 23 is used to limit the socket.

[0039] To further protect the socket within the socket pre-reserved slot 22, the outer edge of the upper side of the upper cover 12 is recessed to form an outer ring groove 24. The boss 20 is located within the outer ring groove 24, and a protective plate assembly is provided on the lateral extension of the outer ring groove 24. Two sets of protective plates are provided and distributed on the front and rear sides of the socket pre-reserved slot 22. The protective plate 25 within the protective plate assembly is at the same left and right position as the socket pre-reserved slot 22, and the protective plate 25 extends to the upper side of the upper cover 12 and the boss ring to protect the socket from impact.

[0040] In addition, two fixed pin seats 27 are arranged in front and behind on the upper side of the base plate 11. The fixed pin seats 27 play a fixed positioning role, and the socket reserved slot 22 on the right side is provided with assembly notches that are distributed vertically with the fixed pin seats 27.

[0041] The above description is only a specific embodiment of the present utility model, but the technical features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the patent scope of the present utility model.

Claims

1. A dual-positioning nitrogen and oxygen sensor housing, comprising a base plate (11) and a top cover (12), wherein the lower side of the top cover (12) is provided with a mounting groove (13) for accommodating a circuit board, characterized in that: An upwardly extending inner buckle plate (14) is integrally formed on the upper edge of the base plate (11), and an inner ring groove (15) adapted to the inner buckle plate (14) is provided on the lower side of the upper cover (12), and the inner ring groove (15) is fitted outside the mounting groove (13). The four corners of the mounting groove (13) protrude inward to form a protrusion (16), and the upper side of the base plate (11) is provided with four arc-shaped protrusions (17) that are rectangularly distributed and can be attached to the inner arc surface of the protrusion (16). The upper cover (12) is pressed onto the base plate (11) by a locking assembly.

2. The dual-positioning nitrogen and oxygen sensor housing according to claim 1, characterized in that: The arc-shaped protrusion (17) extends upward to the upper side of the inner buckle plate (14).

3. The nitrogen and oxygen sensor housing with dual positioning according to claim 1, characterized in that: The locking assembly includes bent plates (18) located at the left and right ends of the base plate (11). The bent plates (18) extend laterally and then bend upwards, and hook plates (19) are integrally formed on the vertical side of the bent plates (18). The upper cover (12) has protrusions (20) on its left and right sides, and the protrusions (20) have grooves (21) adapted to the hook plate (19).

4. The dual-positioning nitrogen and oxygen sensor housing according to claim 3, characterized in that: The hook plate (19) extends laterally and then bends downward so that the outer curved surface of the hook plate (19) is an arc surface.

5. The dual-positioning nitrogen and oxygen sensor housing according to claim 3, characterized in that: In a side view, the bent plate (18) is trapezoidal, and a through groove (26) is provided inside the bent plate (18) that runs from left to right. Both the base plate (11) and the bent plate (18) are made of plastic.

6. The dual-positioning nitrogen and oxygen sensor housing according to claim 1, characterized in that: The upper side of the cover (12) is provided with a socket reserved slot (22) that is connected to the mounting groove (13). There are two socket reserved slots (22) arranged on the left and right sides, and a limit protrusion ring (23) is provided on the upper side of the cover (12) outside the socket reserved slot (22).

7. The dual-positioning nitrogen and oxygen sensor housing according to claim 6, characterized in that: The outer edge of the upper side of the top cover (12) is recessed to form an outer ring groove (24). A protective plate group is provided on the lateral extension of the outer ring groove (24). There are two sets of protective plates distributed on the front and rear sides of the socket reserved groove (22). The protective plate (25) in the protective plate group is at the same left and right position as the socket reserved groove (22), and the protective plate (25) extends to the upper side of the top cover (12) and the limiting protrusion (23).

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