Leakage-proof sealing structure of automobile fuel tank

Abstract

The utility model discloses an automobile fuel tank leakproof sealing structure which comprises a fuel tank body, a sealing assembly is installed on the fuel tank body, and the sealing assembly comprises a sealing pipe, a sealing ring, a sealing ball, a spring, a baffle, a pull rod, a limiting ring, a groove, a connecting rod, a sealing plate, a sealing column and a guide strip. The spring pushes the sealing ball to reset, the sealing column blocks and seals the through hole, first sealing of the sealing pipe is achieved, meanwhile, the sealing ball is tightly attached to the inner wall of the sealing ring, and second sealing of the sealing pipe is achieved. Through cooperation of the sealing column, the baffle, the sealing plate, the sealing ball, the sealing ring and other structures, double sealing of the sealing pipe is achieved, the sealing effect is improved, fuel oil leakage is effectively prevented, and the sealing mode is not affected by the fuel oil amount.

Description

TECHNICAL FIELD

[0001] The utility model relates to a sealing structure, concretely is automobile oil tank leakproof sealing structure, belongs to oil tank sealing technical field. BACKGROUND

[0002] With the development of science and technology, the car enters every household, and the power of the car comes from the engine, and the operation of the engine cannot do without fuel, and the operation of the car cannot do without fuel, and then needs a sealed device to store its fuel, that is, the oil tank. When driving on rough road, the car will be jolted, and the oil tank will be jolted, so that the internal fuel will flow to the oil inlet, and if the sealing cover of the oil inlet is loose and aging, the fuel will leak.

[0003] It is known that the Chinese authorized utility model (announcement number: CN219257065U) discloses a kind of oil inlet self-sealing leakproof oil tank, which is sealed by setting up sealing ball, when refueling, fuel enters into oil tank body inside by sealing pipe, when oil tank is filled, fuel will lift sealing ball, and then block sealing pipe, and then complete the sealing of oil tank body, effectively improve the sealing effect of oil tank body, reduce fuel leakage;

[0004] Although it can realize the sealing of oil tank by sealing ball, in actual sealing process, it always depends on the buoyancy of fuel, and this sealing mode has an obvious limitation: when oil tank is not completely filled with fuel, and oil tank is jolted on bumpy road with the driving of car, the fluctuation and jolt of oil in oil tank will cause the change of buoyancy suffered by sealing ball, since buoyancy is no longer stable, sealing ball cannot always tightly adhere to the sealing port of oil tank, so that oil leaks out from sealing gap during jolt, therefore, an automobile oil tank leakproof sealing structure is proposed. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing an automobile oil tank leakproof sealing structure to solve one of the problems in the above background technology.

[0006] The utility model is implemented by the following technical solutions: an automobile oil tank leakproof sealing structure, comprising an oil tank body, a sealing assembly is installed on the oil tank body, the sealing assembly comprises a sealing pipe, a sealing ring, a sealing ball, a spring, a baffle, a pull rod, a limiting ring, a groove, a connecting rod, a sealing plate, a sealing column and a guide strip;

[0007] The sealing ring is fixedly connected to the top of the inner side wall of the sealing pipe, the two ends of the connecting rod are fixedly connected with the sealing ball and the sealing plate respectively, the baffle is fixedly connected to the inner side wall of the sealing pipe, the through holes are uniformly arranged in the inner part of the baffle, the sealing columns are fixedly connected to the upper surface of the sealing plate, the limiting ring is fixedly connected with the sealing plate through the connecting rod, the grooves are symmetrically arranged in the outer side wall of the limiting ring, the guide strips are symmetrically fixedly connected to the bottom of the inner side wall of the sealing pipe, and the spring is sleeved with the outer side wall of the pull rod.

[0008] As a further preferred of the technical solution, the outer side wall of the sealing ball is attached to the inner side wall of the sealing ring, and the pull rod is slidingly connected to the inner part of the baffle.

[0009] As a further preferred of the technical solution, the upper surface of the sealing plate is attached to the lower surface of the baffle, and the sealing column is slidingly connected to the inner side wall of the through hole.

[0010] As a further preferred of the technical solution, one end of the spring abuts against the outer side wall of the sealing ball, and the other end of the spring abuts against the upper surface of the baffle.

[0011] As a further preferred of the technical solution, the limiting ring is slidingly connected to the inner side wall of the sealing pipe, and the guide strip is slidingly connected to the inner side wall of the groove.

[0012] As a further preferred of the technical solution, the lower surface of the sealing pipe is fixedly connected with the blocking ring.

[0013] As a further preferred of the technical solution, the upper surface of the sealing pipe is fixedly connected with the oil inlet pipe, and the oil tank cover is mounted at the end of the oil inlet pipe away from the sealing pipe.

[0014] As a further preferred of the technical solution, the sealing pipe is mounted to the outer side wall of the oil tank body and communicates with the oil tank body.

[0015] The advantages of the utility model are:

[0016] 1. After the oil tank body is filled with fuel, the sealing ball is reset by the spring, the sealing plate is driven upward by the pull rod, the sealing plate is tightly attached to the baffle, the sealing column seals the through hole, the first resealing of the sealing pipe is realized, at the same time, the spring pushes the sealing ball upward, the sealing ball is tightly attached to the inner wall of the sealing ring, and the second resealing of the sealing pipe is realized.

[0017] 2. The double sealing of the sealing pipe is realized through the cooperation of the sealing column, the baffle, the sealing plate, the sealing ball and the sealing ring, the sealing effect is improved, fuel leakage is effectively prevented, and the sealing mode is not affected by the fuel quantity. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings described in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0019] Figure 1 It is a structural schematic diagram of the present application;

[0020] Figure 2 It is a structural schematic diagram of the sealing assembly of the present application;

[0021] Figure 3 It is an exploded schematic diagram of the sealing assembly structure of the present application;

[0022] Figure 4 It is a structural schematic diagram of the limiting ring of the present application;

[0023] Figure 5 It is a schematic diagram of the installation position of the guide bar of the present application.

[0024] In the figure: 101, sealing assembly; 11, sealing tube; 12, sealing ring; 13, sealing ball; 14, spring; 15, baffle; 16, through hole; 17, pull rod; 18, blocking ring; 19, limiting ring; 20, groove; 21, connecting rod; 22, sealing plate; 23, sealing column; 24, guide bar; 31, oil tank main body; 32, oil tank cover; 33, oil inlet pipe. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings of the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0026] EMBODIMENT

[0027] Please refer to Figures 1-5 The present application provides a technical solution: an automobile oil tank leak-proof sealing structure, comprising an oil tank main body 31, the oil tank main body 31 is installed with a sealing assembly 101, the sealing assembly 101 is used for realizing the sealing of the oil tank;

[0028] The sealing assembly 101 comprises a sealing pipe 11, a sealing ring 12, a sealing ball 13, a spring 14, a baffle 15, a pull rod 17, a limiting ring 19, a groove 20, a connecting rod 21, a sealing plate 22, a sealing column 23 and a guide strip 24;

[0029] The sealing ring 12 is fixedly connected to the top of the inner side wall of the sealing pipe 11, and the outer side wall of the sealing ball 13 is attached to the inner side wall of the sealing ring 12; the sealing pipe 11 can be sealed by the cooperation of the sealing ball 13 and the sealing ring 12, thereby avoiding the leakage of fuel in the fuel tank body 31;

[0030] The two ends of the connecting rod 21 are fixedly connected with the sealing ball 13 and the sealing plate 22 respectively, the baffle 15 is fixedly connected to the inner side wall of the sealing pipe 11, the baffle 15 is uniformly provided with through holes 16 in the inside, the sealing column 23 is fixedly connected to the upper surface of the sealing plate 22, the upper surface of the sealing plate 22 is attached to the lower surface of the baffle 15, and the sealing column 23 is slidingly connected to the inner side wall of the through hole 16; the through hole 16 can be sealed by the sealing column 23, thereby avoiding the leakage of fuel from the sealing pipe 11;

[0031] The pull rod 17 is slidingly connected to the inside of the baffle 15, the spring 14 is sleeved on the outer side wall of the pull rod 17, one end of the spring 14 abuts against the outer side wall of the sealing ball 13, and the other end of the spring 14 abuts against the upper surface of the baffle 15; the sealing ball 13 is pushed by the spring 14, the sealing plate 22 is driven by the sealing ball 13 through the pull rod 17, the sealing plate 22 is tightly attached to the baffle 15, and the sealing column 23 seals the through hole 16; at this time, the first resealing of the sealing pipe 11 is realized; at the same time, the sealing ball 13 is pushed upward by the spring 14, the sealing ball 13 is tightly attached to the inner wall of the sealing ring 12, and the second resealing of the sealing pipe 11 is realized;

[0032] Compared with the prior art, the double sealing of the sealing pipe 11 is realized by the cooperation of the sealing column 23, the baffle 15, the sealing plate 22, the sealing ball 13 and the sealing ring 12, the sealing effect is improved, and the fuel leakage is effectively prevented;

[0033] The limiting ring 19 is fixedly connected with the sealing plate 22 through the connecting rod 21, the groove 20 is symmetrically provided on the outer side wall of the limiting ring 19, and the guide strip 24 is symmetrically fixedly connected to the bottom of the inner side wall of the sealing pipe 11; the limiting ring 19 is slidingly connected to the inner side wall of the sealing pipe 11, and the guide strip 24 is slidingly connected to the inner side wall of the groove 20; when the fuel is added into the fuel tank body 31, the fuel enters the sealing pipe 11 and pushes the sealing ball 13 and the sealing ring 12 apart, the sealing plate 22 is driven by the sealing ball 13 through the pull rod 17, the sealing column 23 is separated from the through hole 16, the fuel flows into the sealing pipe 11 through the sealing ring 12, and then flows into the fuel tank body 31 through the through hole 16;

[0034] When the sealing plate 22 moves downward, the sealing plate 22 drives the limiting ring 19 through the connecting rod 21, the limiting ring 19 slides along the guide strip 24, and the guide strip 24 can play a guiding role, when the sealing plate 22 resets, the sealing column 23 can be accurately inserted into the through hole 16.

[0035] In the embodiment, specifically, the lower surface of the sealing pipe 11 is fixedly connected with the blocking ring 18, and the displacement distance of the sealing plate 22 can be limited through the blocking ring 18.

[0036] In the embodiment, specifically, the upper surface of the sealing pipe 11 is fixedly connected with the oil inlet pipe 33, the oil tank cover 32 is installed at the end of the oil inlet pipe 33 away from the sealing pipe 11, the sealing pipe 11 is installed on the outer side wall of the oil tank body 31 and communicates with the oil tank body 31, and fuel can be added into the oil inlet pipe 33 by opening the oil tank cover 32, and the fuel flows into the oil tank body 31.

[0037] Working principle or structural principle, when fuel is added, the oil tank cover 32 is opened, the fuel is added into the oil inlet pipe 33, then the fuel enters the sealing pipe 11, the sealing ball 13 is separated from the sealing ring 12, the sealing ball 13 drives the sealing plate 22 through the pull rod 17, the sealing column 23 is separated from the through hole 16, at this time, the fuel flows into the sealing pipe 11 through the sealing ring 12, and then flows into the oil tank body 31 through the through hole 16.

[0038] When the fuel is added, the sealing ball 13 is reset by the spring 14, the sealing ball 13 drives the sealing plate 22 to move upward through the pull rod 17, the sealing plate 22 is tightly attached to the baffle 15, and the sealing column 23 seals the through hole 16, at this time, the first resealing of the sealing pipe 11 is realized, at the same time, the spring 14 pushes the sealing ball 13 upward, the sealing ball 13 is tightly attached to the inner wall of the sealing ring 12, the second resealing of the sealing pipe 11 is realized, and the fuel in the oil tank body 31 can be prevented from leaking, and the sealing mode will not be affected by the fuel amount.

[0039] The above only describes the preferred embodiment of the utility model, and does not limit the utility model, any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An automotive fuel tank leak-proof seal structure, characterized by comprising: The oil tank body (31) is provided with a sealing assembly (101), and the sealing assembly (101) comprises a sealing pipe (11), a sealing ring (12), a sealing ball (13), a spring (14), a baffle (15), a pull rod (17), a limiting ring (19), a groove (20), a connecting rod (21), a sealing plate (22), a sealing column (23) and a guide strip (24). The sealing ring (12) is fixedly connected to the top of the inner side wall of the sealing pipe (11), the two ends of the connecting rod (21) are fixedly connected with the sealing ball (13) and the sealing plate (22) respectively, the baffle (15) is fixedly connected to the inner side wall of the sealing pipe (11), the through holes (16) are uniformly arranged in the baffle (15), the sealing columns (23) are fixedly connected to the upper surface of the sealing plate (22), the limiting ring (19) is fixedly connected with the sealing plate (22) through the connecting rod (21), the grooves (20) are symmetrically arranged on the outer side wall of the limiting ring (19), the guide strips (24) are symmetrically fixedly connected to the bottom of the inner side wall of the sealing pipe (11), and the spring (14) is sleeved on the outer side wall of the pull rod (17).

2. The automobile fuel tank leakproof sealing structure according to claim 1, characterized in that, The outer side wall of the sealing ball (13) is attached to the inner side wall of the sealing ring (12), and the pull rod (17) is slidingly connected to the inside of the baffle (15).

3. The automobile fuel tank leakproof sealing structure according to claim 2, characterized in that, The upper surface of the sealing plate (22) is attached to the lower surface of the baffle (15), and the sealing column (23) is slidingly connected to the inner side wall of the through hole (16).

4. The automobile fuel tank leakproof sealing structure according to claim 3, characterized in that, One end of the spring (14) abuts against the outer side wall of the sealing ball (13), and the other end of the spring (14) abuts against the upper surface of the baffle (15).

5. The automotive fuel tank leak-proof sealing structure according to claim 4, wherein The limiting ring (19) is slidingly connected to the inner side wall of the sealing pipe (11), and the guide strip (24) is slidingly connected to the inner side wall of the groove (20).

6. The automotive fuel tank leak-proof sealing structure according to claim 1, wherein The lower surface of the sealing pipe (11) is fixedly connected with a blocking ring (18).

7. The automotive fuel tank leak-proof sealing structure according to claim 1, wherein The upper surface of the sealing pipe (11) is fixedly connected with an oil inlet pipe (33), and the oil inlet pipe (33) is provided with an oil tank cover (32) away from the sealing pipe (11).

8. The automotive fuel tank leak-proof sealing structure according to claim 1, wherein The sealing pipe (11) is installed on the outer side wall of the oil tank body (31) and communicates with the oil tank body (31).

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