CN220031694U

CN220031694U - Fuel tank fuel cap

Info

Publication number: CN220031694U
Application number: CN202321130609.1U
Authority: CN
Inventors: 赵小春; 殷先栋; 陈万吉; 胡泽杨
Original assignee: Anhui Renchi Automobile Electronic Appliance Co ltd
Current assignee: Anhui Renchi Automobile Electronic Appliance Co ltd
Priority date: 2023-05-11
Filing date: 2023-05-11
Publication date: 2023-11-17
Anticipated expiration: 2033-05-11

Abstract

The utility model relates to the technical field of sealing covers, in particular to a fuel cover of a fuel tank, which comprises an outer cover, an inner plug, a first spring, a second spring, a first-stage pressure relief assembly, a second-stage pressure relief assembly and a liquid blocking assembly.

Description

Fuel tank fuel cap

Technical Field

The utility model relates to the technical field of sealing covers, in particular to a fuel cover of a fuel tank.

Background

The fuel tank cap refers to a case for storing gasoline on an automobile. The shape is square, and the sealing performance is good because the sealing device is made of stainless steel. There is only a small circular inlet which is just as large as the cap of the bottle for storage. Typically at the rear of the vehicle.

The existing fuel tank cap structure has the following defects:

in the running process of the vehicle, the fuel oil is easy to overflow due to shaking of the vehicle body, so that waste is caused, and certain potential safety hazard is also caused.

Due to shaking, weather and other reasons, the oil pressure in the oil tank can change, so that the pressure difference with the outside is unbalanced, and the problem of negative pressure suction collapse easily occurs.

Disclosure of Invention

The utility model aims to provide a fuel cover of a fuel tank, which is used for solving the problems of negative pressure shrinkage and liquid leakage in the fuel tank.

To achieve the purpose, the utility model adopts the following technical scheme:

the fuel cap of the fuel tank comprises an outer cap and an inner plug, wherein the inner plug is fixedly arranged at the bottom of the outer cap through three bolts, threads are arranged on the outer wall of the inner plug,

still include first spring, the second spring, one-level pressure release subassembly, second grade pressure release subassembly and hinder the liquid subassembly, the inside of interior stopper is equipped with the mounting groove, the inside of mounting groove is fixed through a plurality of strengthening rib and is equipped with first sleeve, first telescopic inside is fixed and is equipped with the second sleeve, one-level pressure release subassembly is established at the telescopic top of second, first spring is established between the telescopic inside of second and one-level pressure release subassembly, the laminating of second telescopic top is provided with the packing ring, second grade pressure release subassembly is established at the top of packing ring and hinder between the liquid subassembly, the second spring is established on second grade pressure release subassembly, the inside center of enclosing cover is equipped with the round hole, hinder the liquid subassembly and establish between round hole and second grade pressure release subassembly.

Preferably, the first-stage pressure release subassembly includes first fly leaf and four first through-holes, and four equidistant setting of first through-holes are in the inboard bottom of mounting groove, and four first through-holes all are located the telescopic inside of second, and first fly leaf is established in telescopic inside of second, and telescopic inside of second and the bottom of first fly leaf all are equipped with first location boss, and two first location bosses peg graft with the both ends of first spring respectively, are equipped with first clearance between the outer fringe of first fly leaf and the telescopic inner wall of second.

Preferably, the second-stage pressure relief assembly comprises a second movable plate, a sealing plate and four second through holes, the second movable plate is attached to the top of the gasket, a second gap is formed between the outer edge of the second movable plate and the inner wall of the first sleeve, the sealing plate is inserted into the top of the first sleeve, the four second through holes are arranged on the outer wall of the sealing plate at equal intervals, second positioning bosses are arranged at the bottoms of the sealing plate and the top of the second movable plate, and the two second positioning bosses are inserted into two ends of the second spring respectively.

Preferably, the liquid blocking assembly comprises a foam-rubber cushion and a third spring, wherein the third spring is inserted into the round hole, the foam-rubber cushion is attached to the top of the sealing plate, and the top of the foam-rubber cushion is contacted with the bottom of the third spring.

Preferably, the bottom of the outer cover is provided with three positioning rods at equal intervals, the top of the inner plug is provided with three positioning holes at equal intervals, each positioning rod is inserted into one positioning hole, and a third gap is arranged between the top of the inner plug and the bottom of the outer cover.

Preferably, the top of the inner plug is symmetrically provided with two third through holes.

The utility model has the beneficial effects that:

according to the utility model, through designing the first gap, the second gap, the third gap, the first spring, the second spring, the first-stage pressure relief assembly, the second-stage pressure relief assembly and the liquid blocking assembly, three times of pressure relief can be performed until the pressure in the oil tank is relieved to the outside of the oil tank cover, so that the balance of the pressure inside and outside the oil tank is ensured, and the problem of negative pressure suction shrinkage cannot occur.

According to the utility model, the liquid blocking assembly is designed, the third spring plays roles of supporting and limiting, the foam-rubber cushion is firmly abutted against the top of the sealing plate, meanwhile, oil overflow caused by shaking of a vehicle is prevented, a leakage-proof effect is achieved, waste is avoided, running cost is reduced, potential safety hazards are reduced, and a certain dustproof effect is achieved.

According to the utility model, by designing the three positioning rods and the three positioning holes, the outer cover and the inner plug are convenient to accurately butt joint, the disassembly and assembly speeds of the outer cover and the inner plug are improved, and meanwhile, when the fuel oil cover fails, the fuel oil cover is convenient to quickly open, repair or replace parts, and the service life of the fuel oil cover is prolonged.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present utility model, the following description briefly describes the drawings in the embodiments of the present utility model.

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a plan cross-sectional view of the present utility model;

FIG. 3 is an enlarged view at A in FIG. 2;

FIG. 4 is an enlarged view at B in FIG. 2;

FIG. 5 is a cut-away view of the outer cap and inner plug of the present utility model;

FIG. 6 is a schematic diagram of a second perspective structure of the present utility model;

in the figure: the sealing device comprises an outer cover 1, an inner plug 2, a bolt 3, threads 4, a first spring 5, a second spring 6, a primary pressure relief assembly 7, a secondary pressure relief assembly 8, a liquid blocking assembly 9, a reinforcing rib 10, a first sleeve 11, a second sleeve 12, a gasket 13, a round hole 14, a first movable plate 15, a first through hole 16, a first positioning boss 17, a first gap 18, a second movable plate 19, a sealing plate 20, a second through hole 21, a second gap 22, a second positioning boss 23, a foam cushion 24, a third spring 25, a positioning rod 26, a positioning hole 27, a third gap 28 and a third through hole 29.

Description of the embodiments

The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings.

Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to be limiting of the present patent; for the purpose of better illustrating embodiments of the utility model, certain elements of the drawings may be omitted, enlarged or reduced in size and do not represent the actual product dimensions.

Referring to fig. 1 to 6, a fuel cap for a fuel tank comprises an outer cap 1 and an inner plug 2, wherein the inner plug 2 is fixedly arranged at the bottom of the outer cap 1 through three bolts 3, three screw holes corresponding to the bolts 3 are arranged in the outer cap 1 at equal intervals, so that the outer cap 1 and the inner plug 2 are conveniently and tightly connected, threads 4 are arranged on the outer wall of the inner plug 2, the threads 4 facilitate the fixed connection between the inner plug 2 and a thread 4 groove in a filling port of the fuel tank,

still include first spring 5, second spring 6, one-level pressure release subassembly 7, second grade pressure release subassembly 8 and hinder liquid subassembly 9, the inside of inside stopper 2 is equipped with the mounting groove, the inside of mounting groove is fixed through a plurality of strengthening rib 10 and is equipped with first sleeve 11, the inside of first sleeve 11 is fixed and is equipped with second sleeve 12, one-level pressure release subassembly 7 is established at the top of second sleeve 12, first spring 5 is established between the inside of second sleeve 12 and one-level pressure release subassembly 7, the laminating of the top of second sleeve 12 is provided with packing ring 13, second grade pressure release subassembly 8 is established between the top of packing ring 13 and hinder liquid subassembly 9, second spring 6 is established on second grade pressure release subassembly 8, the inside center of enclosing cover 1 is equipped with round hole 14, hinder liquid subassembly 9 and establish between round hole 14 and second grade pressure release subassembly 8.

Referring to fig. 4 and 5, the first-stage pressure relief assembly 7 includes a first movable plate 15 and four first through holes 16, the four first through holes 16 are disposed at the bottom of the inner side of the installation groove at equal intervals, and the four first through holes 16 are all located in the second sleeve 12, the first movable plate 15 is disposed in the second sleeve 12, the first positioning bosses 17 are disposed in the second sleeve 12 and at the bottom of the first movable plate 15, the two first positioning bosses 17 are respectively inserted into two ends of the first spring 5, a first gap 18 is disposed between the outer edge of the first movable plate 15 and the inner wall of the second sleeve 12, and when the pressure in the oil tank is too large during the running process of the vehicle, the internal air pressure enters the second sleeve 12 through the four first through holes 16, so that the first movable plate 15 is jacked up, and at this time, the first spring 5 is converted from a tight state to a stretched state.

Referring to fig. 4 and 5, the second pressure relief assembly 8 includes a second movable plate 19, a sealing plate 20 and four second through holes 21, the second movable plate 19 is attached to the top of the gasket 13, a second gap 22 is provided between the outer edge of the second movable plate 19 and the inner wall of the first sleeve 11, the sealing plate 20 is inserted into the top of the first sleeve 11, the four second through holes 21 are equally spaced on the outer wall of the sealing plate 20, the bottom of the sealing plate 20 and the top of the second movable plate 19 are both provided with second positioning bosses 23, the two second positioning bosses 23 are respectively inserted into two ends of the second spring 6, when the first movable plate 15 is jacked up, since the bottom of the second movable plate 19 and the top of the first movable plate 15 are attached to the top and the bottom of the gasket 13, the two second positioning bosses 23 are respectively inserted into two ends of the second spring 6, so that the second spring 6 is converted from a stretched state to a stretched state, and the first gap 18 is located between the inner wall of the first movable plate 15 and the second sleeve 12, so that the second air pressure enters the second gap 18 from the first movable plate 15 and the second sleeve 11 to the second gap 22, and the second air pressure pad 1 from the top of the second movable plate 1 to the fourth through the second gap 1.

Referring to fig. 5, the liquid blocking assembly 9 includes a foam-rubber cushion 24 and a third spring 25, the third spring 25 is inserted in the round hole 14, the foam-rubber cushion 24 is attached to the top of the sealing plate 20, the top of the foam-rubber cushion 24 contacts with the bottom of the third spring 25, the third spring 25 plays a role in supporting and limiting, the foam-rubber cushion 24 is firmly abutted against the top of the sealing plate 20, and meanwhile, oil is prevented from overflowing due to shaking of a vehicle, so that a leakage-proof effect is achieved.

Referring to fig. 6, three positioning rods 26 are arranged at equal intervals on the bottom of the outer cover 1, three positioning holes 27 are arranged at equal intervals on the top of the inner plug 2, each positioning rod 26 is connected with one positioning hole 27 in an inserting mode, a third gap 28 is arranged between the top of the inner plug 2 and the bottom of the outer cover 1, when air pressure enters between the top of the circular groove and the inner part of the outer cover 1 through the foam-rubber cushion 24, the air pressure is conveyed to the third gap 28 due to the fact that the third gap 28 is arranged between the top of the inner plug 2 and the bottom of the outer cover 1, the three positioning rods 26 are connected with the three positioning holes 27 in an inserting mode, accurate butt joint of the outer cover 1 and the inner plug 2 is facilitated, and the dismounting speed is improved.

Referring to fig. 3 and 6, two third through holes 29 are symmetrically formed at the top of the inner plug 2, and when air pressure is conveyed to the third gap 28, the air pressure is discharged out of the outer cover 1 due to the fact that the two third through holes 29 are located in the third gap 28, pressure relief is achieved, balance of internal pressure and external pressure of the oil tank is ensured, and negative pressure suction and deflation cannot occur.

Claims

1. The utility model provides a fuel tank fuel lid, includes enclosing cover (1) and interior stopper (2), and interior stopper (2) are fixed to be established in the bottom of enclosing cover (1) through three bolt (3), are equipped with screw thread (4) on the outer wall of interior stopper (2), its characterized in that:

still include first spring (5), second spring (6), one-level pressure release subassembly (7), second grade pressure release subassembly (8) and hinder liquid subassembly (9), the inside of interior stopper (2) is equipped with the mounting groove, the inside of mounting groove is fixed through a plurality of strengthening rib (10) is equipped with first sleeve (11), the inside of first sleeve (11) is fixed and is equipped with second sleeve (12), the top at second sleeve (12) is established in one-level pressure release subassembly (7), first spring (5) are established between the inside of second sleeve (12) and one-level pressure release subassembly (7), the top laminating of second sleeve (12) is provided with packing ring (13), second grade pressure release subassembly (8) are established between the top of packing ring (13) and hinder liquid subassembly (9), the inside center of enclosing cover (1) is equipped with round hole (14), hinder liquid subassembly (9) are established between round hole (14) and second grade pressure release subassembly (8).

2. A fuel tank cap as claimed in claim 1, wherein: the first-stage pressure relief assembly (7) comprises a first movable plate (15) and four first through holes (16), wherein the four first through holes (16) are arranged at the inner bottom of the mounting groove at equal intervals, the four first through holes (16) are all positioned in the second sleeve (12), the first movable plate (15) is arranged in the second sleeve (12), first positioning bosses (17) are arranged in the second sleeve (12) and at the bottom of the first movable plate (15), the two first positioning bosses (17) are respectively inserted into the two ends of the first spring (5), and a first gap (18) is formed between the outer edge of the first movable plate (15) and the inner wall of the second sleeve (12).

3. A fuel tank cap as claimed in claim 2, wherein: second grade pressure release subassembly (8) include second fly leaf (19), shrouding (20) and four second through-holes (21), second fly leaf (19) laminating sets up at the top of packing ring (13), be equipped with second clearance (22) between the outer fringe of second fly leaf (19) and the inner wall of first sleeve (11), shrouding (20) are inserted and are established at the top of first sleeve (11), four equidistant settings of second through-holes (21) are on the outer wall of shrouding (20), the bottom of shrouding (20) and the top of second fly leaf (19) all are equipped with second location boss (23), two second location boss (23) peg graft with the both ends of second spring (6) respectively.

4. A tank fuel cap as claimed in claim 3, wherein: the liquid blocking assembly (9) comprises a foam-rubber cushion (24) and a third spring (25), the third spring (25) is inserted into the round hole (14), the foam-rubber cushion (24) is attached to the top of the sealing plate (20), and the top of the foam-rubber cushion (24) is in contact with the bottom of the third spring (25).

5. A fuel tank cap as defined in claim 4, wherein: the bottom equidistant of enclosing cover (1) is provided with three locating lever (26), and the top equidistant of interior stopper (2) is provided with three locating hole (27), and every locating lever (26) all is pegged graft with one locating hole (27), is equipped with third clearance (28) between the top of interior stopper (2) and the bottom of enclosing cover (1).

6. A fuel tank cap as defined in claim 5, wherein: the top of the inner plug (2) is symmetrically provided with two third through holes (29).