Fuel tank pressure sensor mounting structure

Abstract

The utility model relates to oil tank pressure sensor fixing technical field discloses an oil tank pressure sensor mounting structure, and the oil tank pressure sensor mounting structure includes: base, inserts the pipe with base fixed connection, and the oil tank casing is provided with the through -hole for inserting the pipe to extend into, two interval settings support board, and the accommodating space for accommodating the partial area of oil tank pressure sensor is formed between two support boards, and the oil tank pressure sensor and support board slide fit, the pressing plate is connected with support board, and is suitable for the side of oil tank pressure sensor deviating from base and carries out abutment limit position. The utility model provides the oil tank pressure sensor mounting structure sets up for inserting the pipe in the through -hole to be convenient for the quick positioning when installing base, and through two support boards, the oil tank pressure sensor is limited to the lateral position, and through the pressing plate and the oil tank pressure sensor are limited to the abutment position, to avoid the oil tank pressure sensor and separate installation structure.

Description

Technical Field

[0001] This utility model relates to the field of oil tank pressure sensor fixing technology, and specifically to an oil tank pressure sensor mounting structure. Background Technology

[0002] With increasingly stringent environmental requirements for fuel systems, OBD II (On-Board Diagnostics II) leak diagnosis of fuel evaporative emissions has become a core indicator. To meet these requirements, OEMs generally employ a negative pressure diagnostic strategy. The fuel vapor pressure sensor, used to detect the internal pressure of the fuel tank, is a key sensing element for implementing this strategy, and its proper placement and mounting within the fuel system are crucial. Currently, fuel tank pressure sensors are generally mounted in two ways: one is fixed to the fuel pump, and the other is fixed to the evaporator line. However, due to space constraints in the vehicle chassis layout and the installation positions of surrounding components (such as exhaust pipes and suspension systems), some fuel systems cannot achieve either of these mounting methods. In such cases, it is necessary to fix the pressure sensor to the fuel tank housing, thus requiring a mounting structure that can stably install the pressure sensor onto the fuel tank housing. Utility Model Content

[0003] In view of this, the present invention provides an oil tank pressure sensor mounting structure to solve the problems in the background art.

[0004] This utility model provides a fuel tank pressure sensor mounting structure for fixing a fuel tank pressure sensor to a fuel tank housing. The fuel tank pressure sensor mounting structure includes:

[0005] The base is suitable for fixed connection with the fuel tank housing;

[0006] An embedded tube is fixedly connected to the base on the side facing the tank housing. The tank housing has a through hole for the embedded tube to extend into. The detection port of the tank pressure sensor is adapted to communicate with the inner cavity of the tank housing through the embedded tube.

[0007] Two spaced-apart support plates are fixedly connected to the base, and a space is formed between the two support plates to accommodate a portion of the oil tank pressure sensor. The oil tank pressure sensor slides with the support plates, and the sliding direction of the oil tank pressure sensor is parallel to the axis of the embedded tube.

[0008] The pressure plate is connected to the support plate and is adapted to abut and limit the oil tank pressure sensor on the side away from the base.

[0009] In one alternative embodiment, the pressure plate has a through hole, the support plate is adapted to pass through the through hole, and the two opposite sides of the support plate abut against the inner wall of the through hole and the oil tank pressure sensor, respectively.

[0010] In one optional embodiment, a rubber tube is provided at the detection port of the oil tank pressure sensor. The rubber tube is adapted to extend into the embedded tube and abut against the inner wall of the embedded tube.

[0011] In one optional embodiment, the outer peripheral wall of the rubber tube is provided with a protrusion, which is arranged around the axis of the rubber tube, and a groove is provided in the inner wall of the tube to cooperate with the protrusion.

[0012] In one alternative embodiment, an annular surface is provided at the end of the rubber tube away from the oil tank pressure sensor. The annular surface is arranged around the axis of the rubber tube, and the diameter of the annular surface gradually decreases along the direction away from the oil tank pressure sensor.

[0013] In one alternative embodiment, the support plate is provided with a claw, which is adapted to abut against the side of the pressure plate opposite to the oil tank pressure sensor.

[0014] In one alternative embodiment, a perforated groove is provided on the support plate, one end of the claw is connected to the inner wall of the perforated groove, and a sliding pressure surface is provided on the side of the claw away from the base. The sliding pressure surface is adapted to slide in contact with the pressure plate when the pressure plate is installed.

[0015] In one alternative embodiment, the tank pressure sensor is provided with a limiting groove that extends axially parallel to the embedded tube, and the support plate is adapted to slide into the limiting groove.

[0016] In one optional embodiment, a vent cap is provided on the side of the oil tank pressure sensor away from the oil tank housing, and a clearance groove is provided on the pressure plate corresponding to the vent cap.

[0017] The technical solution of this utility model has the following advantages:

[0018] 1. The oil tank pressure sensor mounting structure provided by this utility model is designed to quickly position the oil tank pressure sensor when installing it on the base by inserting a tube into the through hole, and to laterally limit the oil tank pressure sensor by using two support plates, and to abut and limit the oil tank pressure sensor by using a pressure plate, so as to prevent the oil tank pressure sensor from detaching from the mounting structure.

[0019] 2. The oil tank pressure sensor mounting structure provided by this utility model uses two opposite sides of the support plate to abut against the inner wall of the through hole and the oil tank pressure sensor, thereby restricting the lateral sway of the support plate by the inner wall of the through hole, which helps to ensure the constraint effect of the support plate on the oil tank pressure sensor.

[0020] 3. The fuel tank pressure sensor mounting structure provided by this utility model improves the sealing effect at the joint between the detection port and the embedded tube by setting a rubber tube and making it abut against the inner wall of the embedded tube. It also avoids the wear of components caused by rigid collision between the detection port of the fuel tank pressure sensor and the inner wall of the embedded tube when the vehicle vibrates. This helps to extend the service life of the fuel tank pressure sensor and the embedded tube, while reducing the impact of vibration on the fuel tank pressure sensor and improving the stability of the detection data.

[0021] 4. The oil tank pressure sensor mounting structure provided by this utility model uses a convex-concave sealing structure composed of protrusions and grooves to enhance the overall sealing effect and connection stability between the rubber tube and the embedded tube.

[0022] 5. The oil tank pressure sensor mounting structure provided by this utility model has an annular surface that serves as a guide when inserting the rubber tube into the embedded tube, facilitating the smooth insertion of the rubber tube into the embedded tube and effectively avoiding jamming caused by misalignment of the tube opening.

[0023] 6. The oil tank pressure sensor mounting structure provided by this utility model provides elastic deformation space for the claws by opening a hollow groove on the support plate, which helps to reduce the deformation of the support plate during the assembly of the pressure plate, thereby reducing the impact of fatigue deformation on the structural strength of the support plate.

[0024] 7. The oil tank pressure sensor mounting structure provided by this utility model, by setting a limiting groove, provides guidance for the oil tank pressure sensor during installation, and further restricts the shaking of the oil tank pressure sensor in the direction perpendicular to the axial direction of the embedded tube. This helps to improve the installation stability of the oil tank pressure sensor on the mounting structure and reduce the impact on the detection data.

[0025] 8. The oil tank pressure sensor mounting structure provided by this utility model avoids interference between the mounting structure and the structure on the oil tank pressure sensor by setting a clearance groove. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the mounting structure of a fuel tank pressure sensor and the assembly of a fuel tank pressure sensor according to an embodiment of the present invention.

[0028] Figure 2 for Figure 1 Exploded view of the fuel tank pressure sensor mounting structure shown. Figure 1 ;

[0029] Figure 3 for Figure 1 Exploded view of the fuel tank pressure sensor mounting structure shown. Figure 2 ;

[0030] Figure 4 for Figure 1 The diagram shows the structural design of the fuel tank pressure sensor mounting structure.

[0031] Figure 5 for Figure 1 The diagram shows the mounting structure of the oil tank pressure sensor and the assembly diagram of the oil tank housing.

[0032] Figure 6 for Figure 5 The diagram shows the structure of the fuel tank casing.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Base; 2. Tank housing; 201. Through hole; 3. Embedded tube; 4. Support plate; 401. Hollowed-out groove; 5. Pressure plate; 501. Through hole; 502. Leaving groove; 6. Tank pressure sensor; 601. Limiting groove; 602. Vent cap; 7. Rubber tube; 8. Protrusion; 9. Annular surface; 10. Claw; 101. Sliding surface; 11. Connecting hole. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0036] The following is combined with Figures 1 to 6 The following describes embodiments of the present invention.

[0037] According to an embodiment of the present invention, a fuel tank pressure sensor mounting structure is provided for fixing a fuel tank pressure sensor 6 to a fuel tank housing 2. The fuel tank pressure sensor mounting structure includes:

[0038] Base 1 is adapted to be fixedly connected to the fuel tank housing 2;

[0039] The embedded tube 3 is fixedly connected to the side of the base 1 facing the oil tank housing 2. The oil tank housing 2 has a through hole 201 for the embedded tube 3 to extend into. The detection port of the oil tank pressure sensor 6 is adapted to communicate with the inner cavity of the oil tank housing 2 through the embedded tube 3.

[0040] Two spaced-apart support plates 4 are fixedly connected to the base 1. A space is formed between the two support plates 4 to accommodate a portion of the oil tank pressure sensor 6. The oil tank pressure sensor 6 is slidably engaged with the support plates 4. The sliding direction of the oil tank pressure sensor 6 is parallel to the axial direction of the embedded tube 3.

[0041] The pressure plate 5 is connected to the support plate 4 and is adapted to abut and limit the oil tank pressure sensor 6 on the side away from the base 1.

[0042] The fuel tank pressure sensor mounting structure provided in this embodiment is designed to quickly position the fuel tank pressure sensor 6 when mounting the base 1 by inserting the tube 3 into the through hole 201, and to laterally limit the fuel tank pressure sensor 6 by using two support plates 4, and to abut and limit the fuel tank pressure sensor 6 by using a pressure plate 5, so as to prevent the fuel tank pressure sensor 6 from detaching from the mounting structure.

[0043] Specifically, the base 1 is sealed and fixedly connected to the outer surface of the tank housing 2 to prevent gas leakage between the base 1 and the tank housing 2. The embedded tube 3 is integrally formed with the base 1. When the tank pressure sensor 6 is installed, the embedded tube 3 extends into the through hole 201 along its axial direction. The base 1 has a connecting hole 11 corresponding to the channel of the embedded tube 3, and the junction of the end face of the base 1 away from the tank housing 2 and the connecting hole 11 is constructed as an arc-shaped transition surface. Furthermore, an annular sealing groove is formed on the mating surface of the base 1 and the tank housing 2, and a sealing ring is embedded inside to enhance the sealing effect between the base 1 and the outer surface of the tank housing 2.

[0044] Two support plates 4 are arranged opposite each other. The support plates 4 and the base 1 can be integrally formed or separately fixedly connected. For example... Figures 2 to 4 As shown, the main plane of the support plate 4 is parallel to the axial direction of the embedded tube 3. The distance between the two support plates 4 is adapted to the size of the oil tank pressure sensor 6, so that the oil tank pressure sensor 6 can slide along the axial direction of the embedded tube 3 and fall between the two support plates 4. The pressure plate 5 can be detachably fixed to the support plate 4, or it can be abutted and limited by the claws 10 set on the support plate 4 as described below, so that the pressure plate 5 can abut and limit the side of the oil tank pressure sensor 6 away from the base 1. By limiting the oil tank pressure sensor 6 by the pressure plate 5, surface contact is achieved, which helps to avoid deformation of the oil tank pressure sensor 6 housing caused by high pressure in the contact area. The pressure plate 5 can be a plate-like structure set between the two support plates 4, or it can be constructed as a frame structure surrounding the two support plates 4 as described below.

[0045] In one embodiment, combined Figures 1 to 4 As shown, the pressure plate 5 has a through hole 501, the support plate 4 is adapted to pass through the through hole 501, and the two opposite sides of the support plate 4 abut against the inner wall of the through hole 501 and the oil tank pressure sensor 6, respectively.

[0046] The oil tank pressure sensor mounting structure provided in this embodiment uses the two opposite sides of the support plate 4 to abut against the inner wall of the through hole 501 and the oil tank pressure sensor 6, thereby restricting the lateral sway of the support plate 4 by the inner wall of the through hole 501, which helps to ensure the constraint effect of the support plate 4 on the oil tank pressure sensor 6.

[0047] Specifically, a through hole 501 is provided on the pressure plate 5 so that the pressure plate 5 is constructed as a frame structure surrounding the two support plates 4, which can limit the tilt of the two support plates 4 in the direction away from each other, thereby ensuring the contact stability of the support plates 4 with the oil tank pressure sensor 6. Compared with the limitation of the space between the support plates 4 alone, it can more effectively reduce the vibration displacement of the oil tank pressure sensor 6 in the lateral direction and improve the overall installation stability.

[0048] In one embodiment, combined Figure 2 and Figure 3 As shown, a rubber tube 7 is provided at the detection port of the oil tank pressure sensor 6. The rubber tube 7 is adapted to extend into the embedded tube 3 and abut against the inner wall of the embedded tube 3.

[0049] The fuel tank pressure sensor mounting structure provided in this embodiment improves the sealing effect at the joint between the detection port and the embedded tube 3 by setting a rubber tube 7 and making it abut against the inner wall of the embedded tube 3. It also avoids component wear caused by rigid collision between the detection port of the fuel tank pressure sensor 6 and the inner wall of the embedded tube 3 when the vehicle vibrates. This helps to extend the service life of the fuel tank pressure sensor 6 and the embedded tube 3, while reducing the impact of vibration on the fuel tank pressure sensor 6 and improving the stability of the detection data.

[0050] Specifically, the outer peripheral wall of the rubber tube 7 is press-fitted with the inner peripheral wall of the embedded tube 3 to effectively prevent fuel vapor from leaking from the fit, thus avoiding safety hazards and environmental pollution caused by fuel vapor loss. At the same time, it prevents external impurities from entering the fuel tank or the detection path of the fuel tank pressure sensor 6, thereby ensuring detection accuracy.

[0051] In one embodiment, combined Figure 2 and Figure 3 As shown, the outer peripheral wall of the rubber tube 7 is provided with a protrusion 8, which is arranged around the axis of the rubber tube 7, and the inner wall of the tube 3 is provided with a groove that matches the protrusion 8.

[0052] The oil tank pressure sensor mounting structure provided in this embodiment uses a convex-concave sealing structure composed of protrusions 8 and grooves to enhance the overall sealing effect and connection stability between the rubber tube 7 and the embedded tube 3.

[0053] Specifically, the interlocking of the protrusions 8 and the grooves enhances the relative stability of the tank pressure sensor 6 and the tank pressure sensor mounting structure along the axial direction of the embedded tube 3. There is at least one protrusion 8; in a preferred embodiment, there are multiple protrusions 8, which are equidistantly distributed along the axial direction of the rubber tube 7.

[0054] Furthermore, the edge region of the protrusion 8 is constructed as a sloping straight surface or an arc-shaped surface, so that when the rubber tube 7 is inserted into the embedded tube 3, the protrusion 8 is compressed and contracted so that it enters the embedded tube 3.

[0055] In one embodiment, combined Figure 2 and Figure 3 As shown, an annular surface 9 is provided at the end of the rubber tube 7 away from the oil tank pressure sensor 6. The annular surface 9 is arranged around the axis of the rubber tube 7, and the diameter of the annular surface 9 gradually decreases along the direction away from the oil tank pressure sensor 6.

[0056] The oil tank pressure sensor mounting structure provided in this embodiment uses an annular surface 9 to guide the rubber tube 7 when it is inserted into the embedded tube 3, thus facilitating the smooth insertion of the rubber tube 7 into the embedded tube 3 and effectively avoiding jamming caused by misalignment of the tube opening.

[0057] In one embodiment, combined Figures 1 to 4 As shown, a claw 10 is provided on the support plate 4, which is adapted to abut against the side of the pressure plate 5 away from the oil tank pressure sensor 6.

[0058] Specifically, the claw 10 is used to abut and limit the side of the pressure plate 5 away from the base 1, thereby limiting the oil tank pressure sensor 6 through the pressure plate 5, preventing the oil tank pressure sensor 6 from detaching from the mounting structure, and improving the installation stability of the oil tank pressure sensor 6.

[0059] In one embodiment, combined Figures 2 to 4 As shown, a hollow groove 401 is provided on the support plate 4, and one end of the claw 10 is connected to the inner wall of the hollow groove 401. A sliding pressure surface 101 is provided on the side of the claw 10 away from the base 1. The sliding pressure surface 101 is suitable for sliding contact with the pressure plate 5 when the pressure plate 5 is installed.

[0060] The oil tank pressure sensor mounting structure provided in this embodiment has a hollowed-out groove 401 on the support plate 4 so that the claw 10 can be stamped and formed when it is manufactured.

[0061] Specifically, one end of the claw 10 is fixedly connected to the support plate 4 as a fixed end, and the other end of the claw 10 is inclined towards the base 1 and away from the hollow groove 401 as a free end. The other end of the claw 10 is inclined towards the side away from the other support plate 4. The sliding pressure surface 101 of the claw 10 can slide in contact with the pressure plate 5 when the pressure plate 5 is installed. The installation thrust of the pressure plate 5 presses the free end of the claw 10 and the upper part of the support plate 4 towards the other support plate 4, so that the pressure plate 5 can be assembled without manual bending. After the assembly is completed, the support plate 4 automatically resets and abuts against the side of the pressure plate 5 away from the base 1 through the claw 10, thereby improving the convenience and efficiency of assembly.

[0062] In one embodiment, combined Figure 2 and Figure 3 As shown, the oil tank pressure sensor 6 is provided with a limiting groove 601, which extends along the axial direction parallel to the embedded tube 3, and the support plate 4 is adapted to slide into the limiting groove 601.

[0063] The oil tank pressure sensor mounting structure provided in this embodiment, by setting a limiting groove 601, provides guidance for the oil tank pressure sensor 6 when it is installed, and further restricts the shaking of the oil tank pressure sensor 6 in the direction perpendicular to the axial direction of the embedded tube 3. This helps to improve the installation stability of the oil tank pressure sensor 6 on the mounting structure and reduce the impact on the detection data.

[0064] Specifically, the limiting groove 601 is a through groove, which is suitable for the support plate 4 to extend into the limiting groove 601 from one end and extend out from the other end along the axial direction of the embedded tube 3.

[0065] In one embodiment, combined Figures 1 to 4 As shown, the oil tank pressure sensor 6 is provided with a vent cap 602 on the side opposite to the oil tank housing 2, and the pressure plate 5 is provided with a relief groove 502 corresponding to the vent cap 602.

[0066] The oil tank pressure sensor mounting structure provided in this embodiment uses a clearance groove 502 to avoid interference between the mounting structure and the structure on the oil tank pressure sensor 6.

[0067] Specifically, the clearance groove 502 passes through the pressure plate 5 along the axial direction of the embedded tube 3 and communicates with the through hole 501.

[0068] Obviously, the above embodiments are merely examples for clear illustration and are not intended to limit the implementation. Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and all such modifications and variations fall within the scope defined by the present invention.

Claims

1. A mounting structure for a fuel tank pressure sensor, characterized in that, The tank pressure sensor mounting structure is used to fix the tank pressure sensor (6) to the tank housing (2), and includes: The base (1) is adapted to be fixedly connected to the oil tank housing (2); An embedded tube (3) is fixedly connected to the side of the base (1) facing the oil tank housing (2). The oil tank housing (2) has a through hole (201) for the embedded tube (3) to extend into. The detection port of the oil tank pressure sensor (6) is adapted to communicate with the inner cavity of the oil tank housing (2) through the embedded tube (3). Two spaced-apart support plates (4) are fixedly connected to the base (1). A space is formed between the two support plates (4) to accommodate a portion of the oil tank pressure sensor (6). The oil tank pressure sensor (6) is slidably engaged with the support plates (4). The sliding direction of the oil tank pressure sensor (6) is parallel to the axial direction of the embedded tube (3). The pressure plate (5) is connected to the support plate (4) and is adapted to abut and limit the oil tank pressure sensor (6) on the side away from the base (1).

2. The fuel tank pressure sensor mounting structure according to claim 1, characterized in that, The pressure plate (5) has a through hole (501), the support plate (4) is adapted to pass through the through hole (501), and the two opposite sides of the support plate (4) abut against the inner wall of the through hole (501) and the oil tank pressure sensor (6) respectively.

3. The tank pressure sensor mounting structure according to claim 1, characterized in that, The oil tank pressure sensor (6) is provided with a rubber tube (7) at the detection port. The rubber tube (7) is adapted to extend into the embedded tube (3) and abut against the inner wall of the embedded tube (3).

4. The tank pressure sensor mounting structure according to claim 3, characterized in that, The outer peripheral wall of the rubber tube (7) is provided with a protrusion (8), the protrusion (8) is arranged around the axis of the rubber tube (7), and the inner wall of the embedded tube (3) is provided with a groove that matches the protrusion (8).

5. The tank pressure sensor mounting structure according to claim 4, characterized in that, The rubber tube (7) has an annular surface (9) at the end away from the oil tank pressure sensor (6). The annular surface (9) is arranged around the axis of the rubber tube (7), and the diameter of the annular surface (9) gradually decreases along the direction away from the oil tank pressure sensor (6).

6. The tank pressure sensor mounting structure according to claim 1, characterized in that, The support plate (4) is provided with a claw (10), which is adapted to abut against the side of the pressure plate (5) away from the oil tank pressure sensor (6).

7. The tank pressure sensor mounting structure according to claim 6, characterized in that, The support plate (4) has a hollow groove (401) and one end of the claw (10) is connected to the inner wall of the hollow groove (401). The claw (10) has a sliding pressure surface (101) on the side away from the base (1). The sliding pressure surface (101) is adapted to slide in contact with the pressure plate (5) when the pressure plate (5) is installed.

8. The tank pressure sensor mounting structure according to claim 1, characterized in that, The oil tank pressure sensor (6) is provided with a limiting groove (601), the limiting groove (601) extends along the axial direction parallel to the embedded tube (3), and the support plate (4) is adapted to slide into the limiting groove (601).

9. The tank pressure sensor mounting structure according to any one of claims 1 to 8, characterized in that, The oil tank pressure sensor (6) is provided with a vent cap (602) on the side away from the oil tank housing (2), and the pressure plate (5) is provided with a relief groove (502) corresponding to the vent cap (602).

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