Fuel tank cover and fuel tank structure

Abstract

The utility model relates to the technical field of automobiles, in particular to an oil tank cover and an oil tank structure. The fuel tank cover comprises an outer cover, a main piece and a spring piece, the outer cover is provided with a first lock nose in a protruding mode and used for being connected with a fuel tank, the main piece is of a circular structure, the top wall of the main piece is connected to the outer cover, the bottom wall of the main piece is provided with a circular truncated cone in a protruding mode, the spring piece is connected to the circular truncated cone, a first turned-over edge is arranged in the circumferential direction of the main piece, and the inner diameter of the first turned-over edge is the same as the outer diameter of a fuel tank opening. The main piece is provided with an annular groove, the oil tank opening can be formed in the annular groove, and the end of the oil tank opening can extrude the spring piece to abut against the annular groove. Compared with the prior art, the fuel tank cap is simple in structure, the outer cover is provided with the first lock nose in a protruding mode, the fuel tank cap is locked through the visible lock, operation is easy, the situation that the fuel tank cap cannot be opened due to the fact that the lock cylinder of the built-in lock is blocked is avoided, impurities can be prevented from entering the fuel tank from the lock cylinder, the fuel tank cap is suitable for different environments, and the universality of the fuel tank cap is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, in particular to a fuel tank cap and a fuel tank structure. Background Art

[0002] In the prior art, most fuel tank caps of medium and heavy commercial trucks are plastic fuel tank caps. An invisible lock cylinder is arranged in the middle of the fuel tank cap. The lower part of the fuel tank cap adopts a symmetrically arranged key-shaped structure for guiding assembly with a double groove on the fuel tank filling port, and then the fuel tank cap is rotated to lock the fuel tank cap. The structure of the fuel tank cap is complex. Moreover, for harsh environments, the invisible lock structure is easily blocked by dust, making the fuel tank cap unable to be opened. The lock cylinder is easily flooded with water, causing damage to the fuel tank cap and allowing dust or water to enter the fuel tank, contaminating the fuel.

[0003] Therefore, there is an urgent need for a fuel tank cap and a fuel tank structure to solve the above technical problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a fuel tank cap and a fuel tank structure, which can simplify the structure of the fuel tank cap and improve the versatility of the fuel tank cap.

[0005] To achieve the above object, the utility model adopts the following technical solutions:

[0006] A fuel tank cap includes: an outer cover, a main piece and a spring piece. The outer cover is convexly provided with a first lock nose for connecting with the fuel tank. The main piece is of a circular structure. The top wall of the main piece is connected to the outer cover. The bottom wall of the main piece is convexly provided with a frustum. The spring piece is connected to the frustum. A first flanging is arranged circumferentially on the main piece. The inner diameter of the first flanging is the same as the outer diameter of the fuel tank opening. The main piece is provided with an annular groove. The fuel tank opening can be arranged in the annular groove, and the end of the fuel tank opening can squeeze the spring piece to abut against the annular groove.

[0007] As a preferred technical solution of the above fuel tank cap, the fuel tank cap further includes a sealing gasket. The sealing gasket is arranged in the annular groove and between the bottom of the annular groove and the end of the fuel tank opening.

[0008] As a preferred technical solution of the above fuel tank cap, the cross section of the sealing gasket is V-shaped.

[0009] As a preferred technical solution of the above fuel tank cap, the sealing gasket is made of nitrile rubber.

[0010] As a preferred technical solution of the above-mentioned fuel tank cap, the fuel tank cap further includes a plurality of connecting pieces. The frustum is provided with a plurality of first connection holes, and the spring piece is provided with a plurality of second connection holes. The plurality of first connection holes, the plurality of second connection holes and the plurality of connecting pieces are arranged in one-to-one correspondence. The connecting piece passes through the first connection hole and the second connection hole to connect the frustum and the spring piece.

[0011] As a preferred technical solution of the above-mentioned fuel tank cap, the outer cover is provided with a plurality of reinforcing ribs, and the plurality of reinforcing ribs are arranged between the outer cover and the main piece.

[0012] As a preferred technical solution of the above-mentioned fuel tank cap, the outer surface of the outer cover is provided with a plurality of decals.

[0013] As a preferred technical solution of the above-mentioned fuel tank cap, the spring piece is provided with a plurality of claws and a plurality of second flanges. The plurality of claws and the plurality of second flanges are alternately arranged along the circumference of the spring piece, and an avoidance groove is arranged between the claw and the second flange, so that a plurality of the claws can be inserted into the inside of the fuel tank opening, and a plurality of the second flanges are located outside the fuel tank opening.

[0014] A fuel tank structure includes a fuel tank main body. The fuel tank structure further includes the fuel tank cap in any one of the above preferred technical solutions. The fuel tank main body is provided with the fuel tank opening. The fuel tank opening is provided with a plurality of notches and locking chutes. The plurality of notches are arranged in one-to-one correspondence with the plurality of claws, and the claws can pass through the notches and enter the locking chutes.

[0015] As a preferred technical solution of the above-mentioned fuel tank structure, the fuel tank main body is provided with a second lock nose, and the second lock nose can be aligned with the first lock nose.

[0016] Advantages of the present utility model:

[0017] The present utility model provides a fuel tank cap. The fuel tank cap includes: an outer cover, a main piece and a spring piece. The outer cover is convexly provided with a first lock nose for connecting with the fuel tank. The main piece is a circular structure. The top wall of the main piece is connected to the outer cover. The bottom wall of the main piece is convexly provided with a frustum. The spring piece is connected to the frustum. The circumferential direction of the main piece is provided with a first flange. The inner diameter of the first flange is the same as the outer diameter of the fuel tank opening. The main piece is provided with an annular groove. The fuel tank opening can be arranged in the annular groove, and the end of the fuel tank opening can squeeze the spring piece to abut against the annular groove. Compared with the prior art, the fuel tank cap has a simple structure. The outer cover is convexly provided with a first lock nose, and the fuel tank cap is locked by an exposed lock, which is simple to operate, avoids the blockage of the lock core of the hidden lock and makes the fuel tank cap unable to be opened, and at the same time can prevent impurities from entering the fuel tank from the lock core, is applicable to different environments, and improves the versatility of the fuel tank cap.

[0018] The present utility model also provides a fuel tank structure, which includes a fuel tank main body and the above-mentioned fuel tank cap. The fuel tank main body is provided with a fuel tank opening, and the fuel tank opening is provided with a plurality of notches and locking chutes. The plurality of notches are arranged in one-to-one correspondence with a plurality of claws, and the claws can pass through the notches and enter the locking chutes. Compared with the prior art, by providing an exposed lock, this fuel tank structure can prevent impurities from entering the fuel tank through the lock core, enabling the vehicle to be used normally in harsh environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for description in the embodiments of the present utility model. Obviously, the following-described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the content of the embodiments of the present utility model and these drawings.

[0020] Figure 1 is an exploded view of the structure of the fuel tank cap provided by the embodiment of the present utility model;

[0021] Figure 2 is a cross-sectional view of the structure of the fuel tank cap provided by the embodiment of the present utility model;

[0022] Figure 3 is a schematic diagram of the structure of the fuel tank opening provided by the embodiment of the present utility model.

[0023] In the figure:

[0024] 1. Outer cover; 11. First lock nose; 2. Main plate; 21. Round table; 211. First connection hole; 22. First flanging; 23. Annular groove; 3. Spring plate; 31. Second connection hole; 32. Claw; 33. Second flanging; 34. Avoidance groove; 4. Fuel tank opening; 41. Notch; 42. Second lock nose; 5. Sealing gasket; 6. Connecting piece. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following will further elaborate on the present utility model in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. Additionally, it should be noted that for the sake of description, only the parts related to the present utility model rather than all the structures are shown in the drawings.

[0026] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over", and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under", and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0028] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "left", and "right" are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0029] As Figures 1 to 3 shown, the present utility model provides a fuel tank cap. The fuel tank cap includes: an outer cover 1, a main piece 2, and a spring piece 3. The outer cover 1 is convexly provided with a first locking nose 11 for connecting to the fuel tank. The main piece 2 has a circular structure. The top wall of the main piece 2 is connected to the outer cover 1. The bottom wall of the main piece 2 is convexly provided with a frustum 21. The spring piece 3 is connected to the frustum 21. A first flanging 22 is provided on the circumference of the main piece 2. The inner diameter of the first flanging 22 is the same as the outer diameter of the fuel tank opening 4. The main piece 2 is provided with an annular groove 23. The fuel tank opening 4 can be arranged in the annular groove 23, and the end of the fuel tank opening 4 can press the spring piece 3 to abut against the annular groove 23. Compared with the prior art, this fuel tank cap has a simple structure. The outer cover 1 is provided with the first locking nose 11, and the fuel tank cap is locked by an exposed lock, which is simple to operate, avoids the blockage of the lock core of the hidden lock and makes the fuel tank cap unable to be opened, and at the same time can prevent impurities from entering the fuel tank from the lock core, is applicable to different environments, and improves the versatility of the fuel tank cap.

[0030] Optionally, the fuel tank cap further includes a gasket 5, which is disposed in the annular groove 23, and is arranged between the bottom of the annular groove 23 and the end of the fuel tank opening 4. Specifically, in order to improve the sealing performance between the fuel tank cap and the fuel tank opening 4, a gasket 5 is provided in the annular groove 23. When the fuel tank cap is closed, the annular groove 23 of the fuel tank cap presses against the gasket 5 at the top of the fuel tank opening 4, preventing impurities from entering the fuel tank through the gap between the fuel tank cap and the fuel tank opening 4 and preventing fuel from being contaminated.

[0031] Furthermore, the cross-section of the gasket 5 is V-shaped, which can increase the deformation amount of the gasket 5, thereby increasing the interaction force between the gasket 5 and the annular groove 23 of the fuel tank cap and the top of the fuel tank opening 4, further improving the sealing effect and enhancing the impact resistance of the fuel tank cap.

[0032] Still further, the material of the gasket 5 is nitrile rubber, which has excellent oil resistance, high wear resistance, good heat resistance, and strong adhesion, and can prevent the gasket 5 from being corroded by fuel and increase the service life of the gasket 5.

[0033] Optionally, the fuel tank cap further includes a plurality of connecting members 6. The frustum 21 is provided with a plurality of first connection holes 211, and the spring piece 3 is provided with a plurality of second connection holes 31. The plurality of first connection holes 211, the plurality of second connection holes 31, and the plurality of connecting members 6 are arranged in one-to-one correspondence. The connecting member 6 passes through the first connection hole 211 and the second connection hole 31 to connect the frustum 21 and the spring piece 3. Specifically, in this embodiment, the fuel tank cap is provided with three connecting members 6, the frustum 21 is provided with three first connection holes 211, the three first connection holes 211 are evenly distributed on a pitch circle, the spring piece 3 is provided with three second connection holes 31, the three second connection holes 31 are evenly distributed on a pitch circle, and the connecting member 6 passes through the first connection hole 211 and the second connection hole 31 to connect the frustum 21 and the spring piece 3, improving the connection stability between the main piece 2 and the spring piece 3. Of course, in some other embodiments, the number of the connecting members 6, the first connection holes 211, and the second connection holes 31 is determined according to actual needs and will not be elaborated here.

[0034] Furthermore, the connecting member 6 is a rivet, which can improve the firmness of the connection between the main piece 2 and the spring piece 3.

[0035] Optionally, the outer cover 1 is provided with a plurality of reinforcing ribs, which are arranged between the outer cover 1 and the main piece 2, and can improve the connection strength between the outer cover 1 and the main piece 2 and increase the service life of the fuel tank cap.

[0036] Optionally, the outer surface of the outer cover 1 is provided with a plurality of patterns, which can improve the friction between the fuel tank cap and the user's palm when rotating and prevent slipping.

[0037] Optionally, the outer cover 1 is formed by stamping a stainless steel plate, which can improve the strength of the outer cover 1, prevent the outer cover 1 from rusting, and increase the service life of the outer cover 1.

[0038] Optionally, the spring piece 3 is provided with a plurality of claws 32 and a plurality of second flanges 33. The plurality of claws 32 and the plurality of second flanges 33 are alternately arranged along the circumferential direction of the spring piece 3, and an avoidance groove 34 is arranged between the claw 32 and the second flange 33, so that a plurality of claws 32 can be inserted into the inside of the fuel tank opening 4, and a plurality of second flanges 33 are located outside the fuel tank opening 4. Specifically, in this embodiment, the spring piece 3 is provided with three claws 32 and three second flanges 33. The three claws 32 and the three second flanges 33 are alternately arranged along the circumferential direction of the spring piece 3. Avoidance grooves 34 are arranged on both of the two claws 32. With such an arrangement, when the three claws 32 are inserted into the inside of the fuel tank opening 4, the three second flanges 33 can be located outside the fuel tank opening 4, which can increase the locking force between the spring piece 3 and the fuel tank opening 4, prevent the fuel tank cap from separating from the fuel tank opening 4, and ensure the sealing performance of the fuel tank. Of course, in some other embodiments, the number of the claws 32 and the second flanges 33 is determined according to actual needs, which will not be elaborated here.

[0039] The utility model provides a fuel tank structure, including a fuel tank main body. The fuel tank structure further includes the fuel tank cap in the above embodiment. The fuel tank main body is provided with a fuel tank opening 4. The fuel tank opening 4 is provided with a plurality of notches 41 and a locking slide way. The plurality of notches 41 are arranged in one-to-one correspondence with the plurality of claws 32, and the claws 32 can pass through the notches 41 and enter the locking slide way. Specifically, in this embodiment, a locking slide way is arranged inside the fuel tank opening 4. Three notches 41 are arranged at the top of the fuel tank opening 4. The end face of the fuel tank opening 4 is a sealing arc surface. Place the three claws 32 of the spring piece 3 in the corresponding three notches 41 of the fuel tank opening 4 at the correct positions, press vertically into the fuel tank opening 4 with force, compress the sealing gasket 5 and twist the fuel tank cap, so that the three claws 32 of the spring piece 3 can smoothly enter the locking slide way, and twist the fuel tank cap tightly along the slide way. The fuel tank structure further includes other necessary components that make up the fuel tank structure in the prior art. Of course, in some other embodiments, the number and position of the notches 41 are determined according to the number and position of the claws 32, which will not be elaborated here.

[0040] Optionally, the fuel tank main body is provided with a second lock nose 42, and the second lock nose 42 can be aligned with the first lock nose 11. Specifically, the outer wall of the fuel tank opening 4 is provided with the second lock nose 42. When the fuel tank cap is tightened, the second lock nose 42 is aligned with the first lock nose 11, and the fuel tank cap is fixed by a visible lock, and together with the reaction force of the sealing gasket 5, the sealing performance of the fuel tank structure is ensured.

[0041] In addition, the above are only the preferred embodiments of the present utility model and the applied technical principles. Those skilled in the art will understand that the present utility model is not limited to the specific embodiments described herein, and various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present utility model. Therefore, although the present utility model has been described in more detail through the above embodiments, the present utility model is not limited to the above embodiments only. Without departing from the concept of the present utility model, more other equivalent embodiments can be included, and the scope of the present utility model is determined by the scope of the appended claims.

Claims

1. A fuel tank cap, characterized in that: include: An outer cover (1), a main plate (2) and a spring plate (3), wherein the outer cover (1) is provided with a first locking nose (11) for connecting with an oil tank, the main plate (2) is a circular structure, the top wall of the main plate (2) is connected to the outer cover (1), the bottom wall of the main plate (2) is provided with a truncated cone (21), the spring plate (3) is connected to the truncated cone (21), the main plate (2) is provided with a first flange (22) in the circumferential direction, the inner diameter of the first flange (22) is the same as the outer diameter of the oil tank port (4), the main plate (2) is provided with an annular groove (23), the oil tank port (4) can be arranged in the annular groove (23), and the end of the oil tank port (4) can squeeze the spring plate (3) to abut against the annular groove (23).

2. A fuel tank cap according to claim 1, characterized in that: The fuel tank cover also includes a sealing gasket (5), which is arranged in the annular groove (23), and the sealing gasket (5) is arranged between the groove bottom of the annular groove (23) and the end of the fuel tank port (4).

3. A fuel tank cap according to claim 2, characterized in that: The cross section of the sealing gasket (5) is V-shaped.

4. A fuel tank cap according to claim 2, characterized in that: The sealing pad (5) is made of nitrile rubber.

5. The fuel tank cap according to claim 1, characterized in that: The fuel tank cover also includes a plurality of connecting members (6); the truncated platform (21) is provided with a plurality of first connecting holes (211); the spring sheet (3) is provided with a plurality of second connecting holes (31); the plurality of first connecting holes (211) are arranged in a one-to-one correspondence with the plurality of second connecting holes (31) and the plurality of connecting members (6); the connecting members (6) pass through the first connecting holes (211) and the second connecting holes (31) to connect the truncated platform (21) with the spring sheet (3).

6. A fuel tank cap according to any one of claims 1 to 5, characterized in that: The outer cover (1) is provided with a plurality of reinforcing ribs, and the plurality of reinforcing ribs are arranged between the outer cover (1) and the main sheet (2).

7. A fuel tank cap according to any one of claims 1 to 5, characterized in that: The outer surface of the outer cover (1) is provided with a plurality of patterns.

8. A fuel tank cap according to any one of claims 1 to 5, characterized in that: The spring sheet (3) is provided with a plurality of claws (32) and a plurality of second flanges (33), and the plurality of claws (32) and the plurality of second flanges (33) are alternately arranged along the circumference of the spring sheet (3), and an avoidance groove (34) is arranged between the claws (32) and the second flanges (33), so that the plurality of claws (32) can be inserted into the interior of the oil tank port (4), and the plurality of second flanges (33) are located outside the oil tank port (4).

9. A fuel tank structure, comprising a fuel tank body, characterized in that: The oil tank structure also includes the oil tank cover as claimed in claim 8, the oil tank body is provided with the oil tank port (4), the oil tank port (4) is provided with a plurality of notches (41) and a locking slideway, the plurality of notches (41) and the plurality of claws (32) are arranged in a one-to-one correspondence, and the claws (32) can pass through the notches (41) and enter the locking slideway.

10. The fuel tank structure according to claim 9, characterized in that: The oil tank body is provided with a second locking nose (42), and the second locking nose (42) can be aligned with the first locking nose (11).

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