Universal locking-cover-free refueling system

Abstract

The utility model discloses a universal lock-cover-free refueling system, and relates to the technical field of refueling pipelines of automobile fuel systems. Comprising an oil filling pipe body and an uncovered system assembly. The cover-free system assembly is used for being connected to a pipe opening of an oil filling pipe body, the cover-free system assembly comprises a main body without a lock cover, the main body without the lock cover is cylindrical, an outward annular convex edge is arranged on a top opening of the main body without the lock cover, and the annular convex edge is located above the pipe opening; an upper small door is movably arranged at the upper part of the lock-cover-free main body, and a lower small door is movably arranged at the lower part of the lock-cover-free main body; and a guide wall is arranged in the middle of the lock-cover-free main body. The uncovered system assembly can be arranged in a plastic oil filling pipe and a metal oil filling pipe and has universality.

Description

Technical Field

[0001] This utility model relates to the field of automotive fuel system refueling pipeline technology, and in particular to a universal capless refueling system. Background Technology

[0002] The capless refueling system is a strategy to improve customer convenience because it avoids customers having to rotate the fuel cap by hand, avoids contact with dust and oil stains on the fuel cap, and also prevents customers from forgetting to tighten the cap. Therefore, it has been widely used in gasoline vehicles.

[0003] The capless refueling system is installed or welded to the end of the refueling hose. Conventional refueling hoses are divided into two types: metal refueling hoses and plastic refueling hoses. Due to the differences in structure and space dimensions between the two different materials, capless refueling systems on the market are designed and developed separately for these two types of refueling hoses.

[0004] The current challenge is to develop a universal capless refueling system. Utility Model Content

[0005] To address the above problems, this utility model provides a simple, versatile, lockless refueling system with improved adaptability.

[0006] The technical solution of this utility model is: a universal capless refueling system, including a refueling pipe body and a capless system component;

[0007] The capless system component is used to connect to the inlet of the refueling hose body.

[0008] The capless system component includes a capless body, which is cylindrical and has an outward-facing annular protrusion at the top opening, which is located above the tube opening.

[0009] The upper part of the unlocked cover body is provided with an upper small door, and the lower part is provided with a lower small door.

[0010] The lockless main body has a guide wall in the middle.

[0011] It also includes a cap with a central hole, the cap having an outer ring and an inner ring located inside the central hole of the cap;

[0012] The inner ring is located inside the top opening of the unlocked main body and above the upper small door, while the outer ring is located outside the refueling pipe body.

[0013] The refueling pipe body is provided with positioning rings around its perimeter, and the bottom of the outer ring is provided with a hook for connecting the positioning rings.

[0014] The upper small door is movably connected to the unlocked cover body via an upper torsion spring, and a Y-shaped sealing ring is connected to the upper small door.

[0015] The lower small door is movably connected to the unlocked cover body via a lower torsion spring, and a Y-shaped sealing ring is connected to the lower small door.

[0016] The diameter of the passageway used for sealing by the upper small door ranges from ∅23.44 to 23.59 mm.

[0017] An upper O-ring is provided between the upper part of the capless body and the refueling pipe body.

[0018] A lower lip-shaped sealing ring is provided between the lower part of the unlocked body and the refueling pipe body.

[0019] The outer ring is provided with a drain outlet.

[0020] In operation, this invention incorporates a capless system within the refueling pipe body, positioned by an annular convex edge, ensuring convenience and reliability. During refueling, there is no need to disassemble the refueling cap; the upper and lower small doors can be flipped to simplify the refueling process, save time, and guarantee reliability.

[0021] Under the constraint of the guide wall, the nozzle of the fuel dispenser is confined within a designated area. In this area, the fuel sprayed from the fuel dispenser directly enters the interior of the fuel pipe without impacting the pipe wall, thus avoiding the problem of premature nozzle disconnection caused by splashing fuel droplets.

[0022] The capless system component in this invention can be installed inside both plastic and metal refueling pipes, making it versatile. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In the drawings, the parts are not necessarily drawn to scale.

[0024] Figure 1 This is a structural schematic diagram of the present invention.

[0025] Figure 2 yes Figure 1 Top view,

[0026] Figure 3 yes Figure 2 Sectional view of plane AA.

[0027] Figure 4 This is a structural diagram of the lidless system components.

[0028] Figure 5 yes Figure 4 Left view,

[0029] Figure 6 yes Figure 4 A schematic diagram of the three-dimensional structure.

[0030] Figure 7 yes Figure 4 sectional view,

[0031] Figure 8 yes Figure 4 An explosion diagram;

[0032] Figure 1 shows the refueling hose body.

[0033] 2 is a lidless system component.

[0034] 21 is the unlocked main body, 22 is the annular protruding edge, 23 is the upper small door, 24 is the lower small door, and 25 is the guide wall.

[0035] 3 is the cap, 31 is the outer ring, and 32 is the inner ring.

[0036] 4 is the positioning ring, and 5 is the locking hook.

[0037] 6 is the upper torsion spring, 7 is the Y-type sealing ring, 8 is the O-type sealing ring, 9 is the lower lip sealing ring, 10 is the pin, and 11 is the drain outlet. Detailed Implementation

[0038] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0039] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," "right," "vertical," "horizontal," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] This utility model is as follows Figure 1-8 As shown, a universal capless refueling system includes a refueling pipe body 1 and a capless system component 2.

[0042] The capless system component 2 is used to connect to the inlet of the refueling pipe body 1.

[0043] The capless system component 2 includes a capless body 21, which is cylindrical and has an outward-facing annular protrusion 22 at its top opening. The annular protrusion is located above the pipe opening. The capless body is embedded in the refueling pipe body through the annular protrusion.

[0044] The upper part of the unlocked cover body is provided with an upper small door 23, and the lower part is provided with a lower small door 24.

[0045] The lockless main body is provided with a guide wall 25 in the middle.

[0046] In operation, this invention incorporates a capless system within the refueling pipe body, positioned by an annular convex edge, ensuring convenience and reliability. During refueling, there is no need to disassemble the refueling cap; the upper and lower small doors can be flipped to simplify the refueling process, save time, and guarantee reliability.

[0047] After entering through the upper small door, the fuel nozzle reliably enters the lower small door under the constraint of the guide wall. The nozzle barrel is confined within a designated range. In this area, the fuel sprayed from the nozzle directly enters the interior of the fuel pipe without impacting the pipe wall, thus avoiding the problem of premature nozzle disconnection caused by splashing oil droplets.

[0048] This utility model has a compact structure, which can significantly reduce costs and shorten the design and development cycle.

[0049] In practical applications, the capless system components can be installed inside both plastic and metal fuel filler pipes, offering versatility. This utility model... Figure 1 The image shows a plastic refueling hose.

[0050] It also includes a cap 3 with a central hole, the cap having an outer ring 31, and an inner ring 32 located inside the central hole of the cap.

[0051] The inner ring 32 is located inside the top opening of the unlocked main body 21 and above the upper small door 23, while the outer ring 32 is located outside the refueling pipe body 1.

[0052] The refueling pipe body is provided with positioning rings 4 around its perimeter, and the bottom of the outer ring is provided with hooks 5, which are used to connect the positioning rings.

[0053] A cap is provided, which is connected by a hook and a positioning ring for easy assembly and disassembly.

[0054] The space between the inner and outer rings is used to position the unlocked body, which is convenient and reliable.

[0055] In application, special caps for metal parts or special caps for plastic parts are used for fixing to form capless metal refueling pipes and plastic refueling pipes, improving adaptability.

[0056] The upper small door 23 is movably connected to the unlocked cover body through the upper torsion spring 6, and a Y-shaped sealing ring 7 is connected to the upper small door.

[0057] The upper torsion spring drives the upper small door to flip, making it easy to operate; in application, a pin 10 passes through a pair of lugs on the upper torsion spring and the upper small door for connection.

[0058] A Y-shaped sealing ring is provided to achieve a sealing function. The upper small door flip structure is a conventional structure, as disclosed in the applicant's patent application number 202321108084.1 filed on September 12, 2023, entitled "Built-in Lockless Oiling Structure".

[0059] The lower small door 24 is movably connected to the unlocked cover body via a lower torsion spring, and a Y-shaped sealing ring is connected to the lower small door.

[0060] The operating principle of the lower small door is the same as that of the upper small door, so it will not be repeated here. A channel seal is formed between the two Y-shaped sealing rings of the upper and lower small doors.

[0061] The upper small door 23 is used to close the channel with a diameter ranging from ∅23.44 to 23.59 mm.

[0062] The outer diameter of the gasoline nozzle is between ∅20.50 and ∅21.34, while the minimum outer diameter of the diesel nozzle is ∅23.6. The maximum dimension of the nozzle limiting channel is ∅23.44. After accounting for the maximum tolerance of 0.15, the dimension is ∅23.59, which is still smaller than the minimum allowable dimension of the diesel nozzle. Therefore, the diesel nozzle will not be able to pass through the nozzle limiting channel, effectively preventing the refueling of the wrong fuel.

[0063] An upper O-ring 8 is provided between the upper part of the unlocked body and the refueling pipe body.

[0064] This achieves a sealing effect between the unlocked cap body and the refueling pipe body.

[0065] A lower lip-shaped sealing ring 9 is provided between the lower part of the unlocked body and the refueling pipe body.

[0066] Furthermore, the sealing between the unlocked cap body and the refueling pipe body is improved.

[0067] The outer ring 31 is provided with a drain outlet 11. By adding a drainage design, water can be drained through the drain outlet during rainy days or when washing the car, ensuring that no water will enter the refueling pipe during refueling.

[0068] Regarding the information disclosed in this case, the following points need to be clarified:

[0069] (1) The accompanying drawings of the embodiments disclosed in this case only involve the structures involved in the embodiments disclosed in this case. Other structures can refer to the general design.

[0070] (2) Where there is no conflict, the embodiments and features disclosed in this case can be combined with each other to obtain new embodiments;

[0071] The above are merely specific embodiments disclosed in this case, but the scope of protection of this disclosure is not limited thereto. The scope of protection disclosed in this case shall be determined by the scope of protection of the claims.

Claims

1. A universal capless refueling system, comprising a refueling hose body, characterized in that, It also includes lidless system components; The capless system component is used to connect to the inlet of the refueling hose body. The capless system component includes a capless body, which is cylindrical and has an outward-facing annular protrusion at the top opening, which is located above the tube opening. The upper part of the unlocked cover body is provided with an upper small door, and the lower part is provided with a lower small door. The lockless main body has a guide wall in the middle.

2. The universal capless refueling system according to claim 1, characterized in that, It also includes a cap with a central hole, the cap having an outer ring and an inner ring located inside the central hole of the cap; The inner ring is located inside the top opening of the unlocked main body and above the upper small door, while the outer ring is located outside the refueling pipe body. The refueling pipe body is provided with positioning rings around its perimeter, and the bottom of the outer ring is provided with a hook for connecting the positioning rings.

3. The universal capless refueling system according to claim 1, characterized in that, The upper small door is movably connected to the unlocked cover body via an upper torsion spring, and a Y-shaped sealing ring is connected to the upper small door.

4. A universal capless refueling system according to claim 1, characterized in that, The lower small door is movably connected to the unlocked cover body via a lower torsion spring, and a Y-shaped sealing ring is connected to the lower small door.

5. A universal capless refueling system according to claim 1, characterized in that, The diameter of the passageway used for sealing by the upper small door ranges from ∅23.44 to 23.59 mm.

6. A universal capless refueling system according to claim 1, characterized in that, An upper O-ring is provided between the upper part of the capless body and the refueling pipe body.

7. A universal capless refueling system according to claim 1, characterized in that, A lower lip-shaped sealing ring is provided between the lower part of the unlocked body and the refueling pipe body.

8. A universal capless refueling system according to claim 2, characterized in that, The outer ring is provided with a drain outlet.

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