Oil level sensor mounting structure with high stability
By setting a connection part and fastener positioning between the flange body and the housing of the oil level sensor, and setting a welding part, annular groove and sealing groove on the flange body, the welding misalignment problem is solved, and a stable and lightweight oil level sensor installation structure is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- RUIAN DONGYU AUTO PARTS CO LTD
- Filing Date
- 2025-07-16
- Publication Date
- 2026-05-19
AI Technical Summary
The flange body and housing of existing oil level sensors are prone to misalignment during welding, resulting in poor welding quality and a large sensor weight.
First and second connecting parts are provided between the flange body and the oil level sensor housing. After initial positioning with fasteners, they are welded. After welding, the fasteners are retained to prevent displacement. At the same time, welding parts, annular grooves and sealing grooves are provided on the flange body to disperse thermal stress and improve sealing performance. Weight reduction grooves and reinforcing ribs are opened on the flange body to reduce weight.
This design achieves a stable installation between the flange body and the oil level sensor housing, reducing the risk of welding misalignment and improving sealing performance and weight reduction.
Smart Images

Figure CN224262599U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of oil level sensor technology, and specifically to a highly stable oil level sensor mounting structure. Background Technology
[0002] A level sensor is a component that detects the position of oil in a container by converting the change in capacitance between the sensor housing and the sensing electrode caused by oil entering the container into a change in current. Currently, widely used oil level sensors include a sensing device and a wiring device. In the prior art, oil level sensors are installed by connecting a flange to the oil tank and welding the oil level sensor to the flange. Although this method has high strength, it is also relatively heavy, which will affect the weight of the product assembly using the oil level sensor.
[0003] To address the aforementioned issues, a lightweight, high-strength oil level sensor flange body mounting structure, disclosed in publication number "CN218564081U", includes a flange body mounted on the outer surface of a housing. The flange body is welded to the housing, and a through hole is provided in the middle of the flange body. The flange body is mounted on the outer surface of the housing through the through hole. An annular groove is provided on the front end face of the flange body, located outside the through hole. The annular groove is coaxially arranged with the through hole. At least two sets of reinforcing ribs are provided inside the annular groove. The rear end of the reinforcing rib is connected to the rear side of the annular groove, the outer end of the reinforcing rib is connected to the outer wall of the annular groove, and the inner end of the reinforcing rib is connected to the inner wall of the annular groove. A weight-relief groove is formed between adjacent reinforcing ribs.
[0004] However, in the aforementioned document, the flange body and the shell lack a positioning structure before welding. During the welding process, the position between the flange body and the shell may shift, resulting in poor welding quality. Summary of the Invention
[0005] The technical problem to be solved by this utility model is to provide a highly stable oil level sensor mounting structure that prevents the flange body and the housing from shifting during welding, in order to address the shortcomings of the prior art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a highly stable oil level sensor mounting structure, comprising an oil level sensor housing and a flange body mounted on the outer surface of the oil level sensor housing, wherein the flange body has a through hole in its middle portion for mounting on the outer wall of the oil level sensor housing, characterized in that: a first connecting portion is provided on the lower end face of the flange body, a second connecting portion is provided on the outer wall of the oil level sensor housing, an mounting groove for mounting the first connecting portion is provided at the upper end of the second connecting portion, a plurality of first mounting holes are provided along its circumferential direction at the edge of the upper end face of the second connecting portion, a second mounting hole corresponding to the first mounting hole is provided through the flange body, and a fastener is provided between the first mounting hole and the second mounting hole.
[0007] The above technical solution involves installing the flange body and the oil level sensor housing together during the welding process, positioning the first connection part in the mounting groove of the second connection part. Simultaneously, aligning the first and second mounting holes, fasteners are inserted to complete the initial installation and provide positioning, preventing misalignment during welding of the flange body and the oil level sensor housing. Welding is then performed, and the fasteners are retained after welding, eliminating the need for disassembly. This allows them to withstand the stress generated during operation for an extended period, resulting in a more stable installation between the flange body and the oil level sensor housing.
[0008] A further feature of this invention is that the upper end face of the flange body protrudes upward at the outer edge of the through hole, providing a welding part for welding the flange body and the oil level sensor, and the lower end of the flange body is connected to the second connecting part by welding.
[0009] The above technical solution facilitates welding between the flange body and the oil level sensor housing by setting up a welding section.
[0010] A further feature of this invention is that an annular groove is provided at the outer end of the second connecting part near the upper welding point.
[0011] The above technical solution is adopted: by setting the annular groove, the thermal stress is dispersed along the groove during welding, thus avoiding cracking of the second connection due to thermal deformation.
[0012] A further feature of this invention is that a first sealing groove is provided on the outer wall of the first connecting part, a sealing ring is embedded in the first sealing groove, and a second sealing groove corresponding to the sealing ring is provided on the inner wall of the mounting groove.
[0013] By adopting the above technical solution, the sealing performance between the flange body and the oil level sensor housing can be improved through the setting of the sealing ring.
[0014] A further feature of this invention is that a plurality of weight-reducing grooves are provided around the through hole on the lower end face of the first connecting part, and reinforcing ribs are provided between adjacent weight-reducing grooves.
[0015] By adopting the above technical solution, the weight of the flange body can be reduced by setting the weight reduction groove and the reinforcing rib, thus achieving the effect of lightweighting.
[0016] A further feature of this invention is that a plurality of third mounting holes are provided through the flange body near its outer edge, and the third mounting holes are spaced apart along the circumference of the flange body.
[0017] The above technical solution allows workers to easily install the flange body and oil level sensor into the oil tank through the third mounting hole.
[0018] A further feature of this invention is that one end of the oil level sensor housing is provided with an end cap, and the other end is provided with a socket assembly.
[0019] The above technical solution facilitates assembly by providing end caps, while the socket assembly ensures the usability of the oil level sensor.
[0020] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0022] Figure 2 This is an exploded view of the entire utility model.
[0023] Figure 3 This is a partial exploded view of the present invention.
[0024] Figure 4 These are exploded views of the present invention from different perspectives.
[0025] Labeling: Oil level sensor housing 1, second connecting part 11, mounting groove 111, second sealing groove 111a, first mounting hole 112, annular groove 113, end cap 12, socket assembly 13, flange body 2, through hole 21, first connecting part 22, first sealing groove 221, sealing ring 222, weight reduction groove 223, reinforcing rib 224, second mounting hole 23, welding part 24, third mounting hole 25. Detailed Implementation
[0026] In the accompanying drawings of this specific embodiment and the disclosed embodiments, only the structures involved in the disclosed embodiments are involved. Other structures can be referred to with ordinary design. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of this utility model, they are protected by patent law.
[0027] like Figure 1-4The diagram shows a highly stable oil level sensor mounting structure, including an oil level sensor housing 1 and a flange body 2 mounted on the outer surface of the oil level sensor housing 1. The flange body 2 has a through hole 21 in the middle, which allows it to be mounted on the outer wall of the oil level sensor housing 1. The lower end face of the flange body 2 is provided with a first connecting part 22, and the outer wall of the oil level sensor housing 1 is provided with a second connecting part 11. The upper end of the second connecting part 11 is provided with a mounting groove 111 for mounting the first connecting part 22. Several first mounting holes 112 are provided along the circumferential direction at the edge of the upper end face of the second connecting part 11. The flange body 2 is provided with a second mounting hole 23 corresponding to the first mounting hole 112. Fasteners are provided between the first mounting hole 112 and the second mounting hole 23.
[0028] like Figure 1-3 The flange body 2 shown has a welding part 24 that protrudes upward at the outer edge of the through hole 21 on the upper end face for welding the flange body 2 and the oil level sensor. The lower end of the flange body 2 is connected to the second connecting part 11 by welding.
[0029] like Figure 2-4 The second connecting part 11 shown has an annular groove 113 near the upper welding point on its outer end. The first connecting part 22 has a first sealing groove 221 on its outer wall. A sealing ring 222 is embedded in the first sealing groove 221. The inner wall of the mounting groove 111 has a second sealing groove 111a corresponding to the sealing ring 222.
[0030] like Figure 4 The lower end face of the first connecting part 22 shown has a plurality of weight-reducing grooves 223 surrounding the through hole 21, and reinforcing ribs 224 are provided between adjacent weight-reducing grooves 223; as shown Figure 1-4 The flange body 2 shown has several third mounting holes 25 through it near the outer edge, and each third mounting hole 25 is distributed at intervals along the circumference of the flange body 2. One end of the oil level sensor housing 1 is provided with an end cap 12, and the other end is provided with a socket assembly 13.
[0031] In use, the flange body 2 and the oil level sensor housing 1 are installed together, so that the first connecting part 22 is located in the mounting groove 111 of the second connecting part 11. At the same time, the first mounting hole 112 and the second mounting hole 23 are aligned, and the fasteners are installed to complete the initial installation and play a positioning role, preventing the flange body 2 and the oil level sensor housing 1 from shifting during welding. Then welding is carried out. After welding, the fasteners are retained and do not need to be disassembled. They can withstand the stress generated during operation for a long time, making the installation between the flange body 2 and the oil level sensor housing 1 more stable.
Claims
1. A highly stable oil level sensor mounting structure, comprising an oil level sensor housing and a flange body mounted on the outer surface of the oil level sensor housing, wherein the flange body has a through hole in its middle portion for mounting onto the outer wall of the oil level sensor housing, characterized in that: The flange body has a first connecting part on its lower end face, and the oil level sensor housing has a second connecting part on its outer wall. The upper end of the second connecting part has an installation groove for the first connecting part to be installed. The upper end face of the second connecting part has a plurality of first mounting holes along its circumferential direction at its edge. The flange body has a second mounting hole corresponding to the first mounting hole through it. Fasteners are provided between the first mounting hole and the second mounting hole.
2. The highly stable oil level sensor mounting structure according to claim 1, characterized in that: The upper end face of the flange body is provided with a welding part that protrudes upward at the outer edge of the through hole for welding the flange body and the oil level sensor. The lower end of the flange body is connected to the second connecting part by welding.
3. The oil level sensor mounting structure with high stability according to claim 2, characterized in that: The outer end of the second connecting part is provided with an annular groove near the upper welding point.
4. The oil level sensor mounting structure with high stability according to claim 3, characterized in that: A first sealing groove is provided on the outer wall of the first connecting part, and a sealing ring is embedded in the first sealing groove. A second sealing groove corresponding to the sealing ring is provided on the inner wall of the mounting groove.
5. A highly robust oil level sensor mounting structure according to any one of claims 1-4, characterized in that: The lower end face of the first connecting part is provided with a plurality of weight-reducing grooves around the through hole, and reinforcing ribs are provided between adjacent weight-reducing grooves.
6. The highly stable oil level sensor mounting structure according to claim 5, characterized in that: The flange body has several third mounting holes that penetrate near its outer edge, and these third mounting holes are spaced apart along the circumference of the flange body.
7. The oil level sensor mounting structure with high stability according to claim 6, characterized in that: The oil level sensor housing has an end cap at one end and a socket assembly at the other end.