CN219583948U

CN219583948U - Sealing cover

Info

Publication number: CN219583948U
Application number: CN202321265702.3U
Authority: CN
Inventors: 詹和锋; 周尚燕
Original assignee: Chengdu Lingchuan Vehicle Oil Tank Co ltd
Current assignee: Chengdu Lingchuan Vehicle Oil Tank Co ltd
Priority date: 2023-05-24
Filing date: 2023-05-24
Publication date: 2023-08-25
Anticipated expiration: 2033-05-24

Abstract

The utility model provides a sealing cover, which relates to the technical field of fuel tanks and comprises a screwing part; a sealing part in a shape of a circular truncated cone; a threaded section having external threads; wherein: the diameter of the sealing part gradually decreases from top to bottom; the lower extreme of sealing portion is provided with the tube cap sealing washer. The sealing cover is matched with the oil inlet section of the oil filling pipe for use; the screw connection section of the sealing cover can be in threaded connection with the oil inlet section so as to better connect the sealing cover with the oil filling pipe; the sealing part is matched with the connecting groove of the oil inlet section; the diameter of the sealing part is gradually reduced from top to bottom, and the side wall of the sealing part can be attached to the side wall of the connecting groove so as to ensure the tightness between the sealing part and the connecting groove, thereby reducing the permeation and leakage of fuel in the fuel inlet section; the lower extreme of sealing portion can laminate mutually with the bottom of spread groove, through being provided with the tube cap sealing washer at the lower extreme of sealing portion, can further guarantee the leakproofness between sealing portion and the spread groove to further reduce advance oil section fuel infiltration and leak.

Description

Sealing cover

Technical Field

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

Background

The filler neck of fuel tank is used for filling the fuel, needs often to open and close the filler cap, and current filler cap closes most buckle formula and closes, and leakproofness and pressure-bearing nature are weaker, have the risk of infiltration leakage.

Patent document of application number CN201921763776.3 discloses a filler structure, and it is equipped with first lid, and first lid cooperates with the outer tip of filler tube, cooperates with the enclosing cover through the boss, first block portion cooperates with the second block portion, and first sealing washer seals, realizes firmly sealed lid and closes, can effectively reduce filler oil fuel infiltration and leakage.

The utility model aims to provide a sealing cover which has similar function as the first cover body so as to reduce fuel permeation and leakage of a fuel filling opening.

Disclosure of Invention

In view of the above, the present utility model provides a seal cap that functions similarly to the first cap body to reduce fuel permeation and leakage from the filler neck.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a sealing cover, which mainly comprises:

a screwing part;

a sealing part in a shape of a circular truncated cone; a kind of electronic device with high-pressure air-conditioning system

A threaded section having external threads;

wherein:

the diameter of the sealing part gradually decreases from top to bottom;

the lower extreme of sealing portion is provided with the tube cap sealing washer.

In some embodiments of the present utility model, the sealing cap further comprises a screwing connection section, and the screwing section, the screwing connection section, and the sealing section are sequentially connected.

In some embodiments of the utility model, the screwed connection section is cylindrical, the screwed connection section is connected with a compression ring in a threaded manner, and is sleeved with a limiting ring, the limiting ring is positioned below the compression ring, and the bottom of the limiting ring is provided with a plurality of limiting teeth.

In some embodiments of the utility model, the screw is cylindrical.

In some embodiments of the present utility model, the screw portion is provided with a plurality of arc-shaped notches circumferentially and at intervals.

In some embodiments of the utility model, the center of the screw is provided with a socket along its axial direction.

In some embodiments of the utility model, the guard cover is capable of shielding the socket.

In some embodiments of the present utility model, the protective cover is made of plastic material, and the inner side of the lower part of the protective cover is provided with a clamping block.

The embodiment of the utility model has at least the following advantages or beneficial effects:

1. the sealing cover is matched with the oil inlet section of the oil filling pipe for use; the screw connection section of the sealing cover can be in threaded connection with the oil inlet section so as to better connect the sealing cover with the oil filling pipe.

2. The sealing part is matched with the connecting groove of the oil inlet section; the diameter of the sealing part gradually reduces from top to bottom, and the side wall of the sealing part can be attached to the side wall of the connecting groove so as to ensure the tightness between the sealing part and the connecting groove, thereby reducing the fuel permeation and leakage of the oil inlet section.

3. The lower extreme of sealing portion can laminate mutually with the bottom of spread groove, through being provided with the tube cap sealing washer at the lower extreme of sealing portion, can further guarantee the leakproofness between sealing portion and the spread groove to further reduce advance oil section fuel infiltration and leak.

Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic structural view of a fuel filler structure;

FIG. 2 is an enlarged view of a portion of the position A of FIG. 1;

FIG. 3 is a schematic view of the structure of the seal cover and the protective cover;

FIG. 4 is a schematic structural view of a seal cover;

fig. 5 is a schematic structural view of the sealing cover.

Icon:

1-a fuel tank body, wherein the fuel tank body is provided with a plurality of fuel inlets,

21-an oil inlet section, 211-a lug, 212-a limit groove, 213-a connecting groove, 214-a pipe cover sealing ring, 22-an oil outlet section, 221-an oil pipe fixing piece, 222-a box pipe sealing ring, 223-a bevel part,

31-screwing part, 311-arc notch, 312-socket, 32-screwing connection section, 321-compression ring, 322-limit ring, 323-limit tooth, 33-sealing part, 34-screw connection section,

4-a protective cover, 41-a clamping block,

a 5-valve plate, wherein the valve plate is provided with a valve seat,

61-fixed rod, 62-movable rod, 621-retainer ring and 63-return spring.

Detailed Description

Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those of skill in the pertinent art, the described embodiments may be modified in numerous different ways without departing from the spirit or scope of the embodiments of the present utility model.

In describing embodiments of the present utility model, it will be understood that the term "plurality" means two or more, unless otherwise specifically defined.

In the embodiments of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and include, for example, either permanently connected, removably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances.

Embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

Examples

Referring to fig. 1 to 5, the present embodiment provides a fuel tank, which mainly includes a fuel tank body 1 and a filler structure.

The oil filler structure mainly comprises an oil filler pipe, a sealing cover, a protective cover 4, a valve plate 5 and a reset mechanism.

The oil filling pipe mainly comprises an oil inlet section 21 and an oil outlet section 22 which are vertically connected, wherein the oil inlet section 21 is vertically arranged, and the oil outlet section 22 is transversely arranged.

The outer edge of the inlet of the oil inlet section 21 is provided with a lug 211 along the radial direction thereof, the top of the lug 211 is provided with a limit groove 212, and a plurality of lugs 211 are arranged at intervals along the circumferential direction of the oil inlet section 21; the inner edge of the inlet of the oil inlet section 21 is provided with a connecting groove 213, the connecting groove 213 is coaxial with the oil inlet section 21, the diameter of the connecting groove 213 gradually decreases from top to bottom, and the bottom of the connecting groove 213 is provided with a pipe cover sealing ring 214; the inner wall of the oil inlet section 21 is provided with an internal thread, which is located below the connection groove 213.

The middle part of the oil outlet section 22 is provided with an oil pipe fixing piece 221, the oil pipe fixing piece 221 is connected with the fuel tank body 1 through a bolt, one end of the oil outlet section 22, which is far away from the oil inlet section 21, stretches into the fuel tank body 1, and a tank pipe sealing ring 222 is arranged at the joint of the oil outlet section 22 and the fuel tank body 1.

The sealing cover is detachably and hermetically connected with the oil inlet section 21, and mainly comprises a screwing part 31, a screwing connecting section 32, a sealing part 33 and a screwing section 34 which are sequentially connected from top to bottom.

The screwing part 31 is cylindrical, and a plurality of arc-shaped notches 311 are formed in the screwing part 31 along the circumferential direction at intervals; the center of the top of the screwing part 31 is provided with a socket 312 along the axial direction, and the shape of the socket 312 is similar to that of a key hole; it should be noted that, the socket 312 does not have the function of locking and unlocking with the key, which only plays a role of decoration and confusion for thieves who steal fuel in the fuel tank body 1, after all, even if the socket 312 is a true keyhole (i.e., the sealing cover has the function of locking and unlocking), the socket 312 is limited in the role that can play, so that the socket 312 is only provided with the function of decoration and confusion for thieves who have bad attempts to steal fuel.

The screwed connection section 32 is cylindrical, the screwed connection section 32 is connected with a compression ring 321 in a threaded manner, a limiting ring 322 is sleeved on the screwed connection section, the limiting ring 322 is positioned below the compression ring 321, and a plurality of limiting teeth 323 matched with the limiting grooves 212 are formed in the bottom of the limiting ring 322.

The sealing portion 33 is in a truncated cone shape, the diameter of the sealing portion is gradually reduced from top to bottom, the side wall of the sealing portion 33 can be attached to the side wall of the connecting groove 213, and the lower end of the sealing portion 33 can be attached to the bottom of the connecting groove 213.

The threaded section 34 has external threads that mate with internal threads.

When the sealing cover is connected with the oil filling pipe, the screw section 34 of the sealing cover can be screwed into the oil inlet section 21 firstly, so that the side wall of the sealing part 33 is tightly attached to the side wall of the connecting groove 213, the lower end of the sealing part 33 is tightly attached to the bottom of the connecting groove 213, meanwhile, under the action of the pipe cover sealing ring 214, fuel is prevented from overflowing from the inlet of the oil inlet section 21, then, the limiting ring 322 can be moved downwards firstly, the limiting teeth 323 of the limiting ring 322 are inserted into the limiting groove 212, the pressing ring 321 is screwed again, the pressing ring 321 is tightly pressed on the limiting ring 322, the upward movement of the limiting ring 322 is limited by the pressing ring 321 so as to prevent the limiting teeth 323 from accidentally separating from the limiting groove 212, and the rotation of the sealing cover is limited by the cooperation of the limiting teeth 323 and the limiting groove 212, so that the sealing cover is prevented from loosening and oil seepage is effectively prevented. When the sealing cover needs to be disassembled, the pressing ring 321 and the limiting ring 322 can be moved upwards to separate the limiting teeth 323 and the limiting grooves 212, and then the screwing part 31 of the sealing cover is rotated to disassemble the sealing cover from the oil inlet section 21.

The protective cover 4 is used for protecting the sealing cover, the protective cover 4 can shield the socket 312, the lower inner side of the protective cover 4 is provided with a clamping block 41, the protective cover 4 is made of plastic materials, and the clamping block 41 can be abutted to the bottom of the protruding block 211 so as to limit the upward movement of the clamping block 41 and the protective cover 4 through the protruding block 211.

The valve plate 5 is obliquely arranged, the side wall of the valve plate 5 is in sliding sealing fit with the inner wall of the oil inlet section 21, and the valve plate 5 can move along the axial direction of the oil inlet section 21; the valve plate 5 is used for blocking the connection between the oil inlet section 21 and the oil outlet section 22, or the valve plate 5 is used for communicating the oil inlet section 21 and the oil outlet section 22, specifically, after the valve plate 5 moves downwards along the axial direction of the oil inlet section 21, the oil inlet section 21 is communicated with the oil outlet section 22; after the valve plate 5 moves upward in the axial direction of the oil intake section 21 and is reset, the connection between the oil intake section 21 and the oil discharge section 22 is interrupted by the valve plate 5. The inner wall of the oil outlet section 22 is provided with a bevel portion 223 matched with the upper side of the valve plate 5, and the upper side of the valve plate 5 can be attached to the bevel portion 223 so as to ensure the sealing performance of the valve plate 5.

The return mechanism is used for moving and returning the valve plate 5 upward in the axial direction of the oil inlet section 21, and may mainly include a fixed rod 61, a movable rod 62, and a return spring 63.

The fixing rod 61 is fixed to the oil inlet section 21.

The movable rod 62 is inserted into the fixed rod 61, and a retainer ring 621 is provided on the upper portion of the movable rod 62.

The return spring 63 is used for moving the valve plate 5 upward and returning, and is sleeved on the movable rod 62, one end of the return spring 63 is connected with the retainer 621, and the other end is connected with the fixed rod 61.

The working principle of the valve plate 5 and the reset mechanism is as follows: when the fuel is injected into the fuel tank body 1, the sealing cover can be detached firstly, then the fuel gun is inserted into the fuel inlet section 21 and the valve plate 5 is pushed downwards so as to communicate the fuel inlet section 21 with the fuel outlet section 22, and the valve plate 5 is obliquely arranged, so that the valve plate 5 can not block the fuel gun, and the fuel can be smoothly injected into the fuel tank body 1 through the fuel filling pipe.

As is clear from the above, the purpose of preventing oil seepage in this embodiment is achieved by the sealing engagement of the connecting groove 213 and the sealing portion 33, and by the tube cover seal 214 and the box tube seal 222, and further, the oil backflow from the oil outlet section 22 to the oil inlet section 21 can be prevented by the engagement of the valve plate 5 and the inclined surface portion 223.

Finally, it should be noted that: the above is only a preferred embodiment of the present utility model, and it is not intended to limit the present utility model, and various modifications and variations of the present utility model may be possible to those skilled in the art, and the embodiments of the present utility model and features in the embodiments may be arbitrarily combined with each other without collision. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A sealing cover, characterized by comprising the following components connected in sequence:

a screwing part;

A threaded section having external threads;

wherein:

the diameter of the sealing part gradually decreases from top to bottom;

2. The seal cap of claim 1, further comprising a screw-on connection section, wherein the screw-on portion, the screw-on connection section, and the seal portion are connected in sequence.

3. The sealing cover according to claim 2, wherein the screwing connection section is cylindrical, the screwing connection section is connected with a compression ring in a threaded manner, and is sleeved with a limiting ring, the limiting ring is located below the compression ring, and the bottom of the limiting ring is provided with a plurality of limiting teeth.

4. The seal cap of claim 1 wherein the screw is cylindrical.

5. The seal cap of claim 4 wherein the screw portion is formed with a plurality of arcuate notches circumferentially and at intervals.

6. A closure as claimed in any one of claims 1 to 5, wherein the screw portion is centrally provided with a socket along its axial direction.

7. The seal of claim 6 further comprising a protective cover capable of shielding said socket.

8. The sealing cover according to claim 7, wherein the protective cover is made of plastic material, and a clamping block is arranged on the inner side of the lower part of the protective cover.