CN219583946U

CN219583946U - Oil filler structure

Info

Publication number: CN219583946U
Application number: CN202321265703.8U
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 fuel filler structure, which relates to the technical field of fuel tanks and comprises a fuel tank body; the oil filling pipe comprises an oil inlet section and an oil outlet section which are vertically connected, and the oil outlet section is connected with the fuel tank body; the sealing cover is detachably and hermetically connected with the oil inlet section; the side wall of the valve plate is in sliding sealing fit with the inner wall of the oil inlet section, and the valve plate can longitudinally move; the reset mechanism is used for enabling the valve plate to move upwards and reset; wherein: the inner wall of the oil outlet section is provided with an inclined surface part matched with the upper side of the valve plate, and the upper side of the valve plate can be attached to the inclined surface part; after the valve plate moves downwards, the oil inlet section is communicated with the oil outlet section. The sealing cover is detachably and hermetically connected with the oil inlet section to reduce the permeation and leakage of the fuel at the oil inlet; the fuel can be better prevented from flowing backwards from the oil outlet section to the oil inlet section through the matching of the valve plate and the inclined surface part.

Description

Oil filler structure

Technical Field

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

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 CN201921763776.3 discloses a fuel filler structure which adopts a double sealing strategy to effectively reduce fuel permeation and leakage from the fuel filler.

It is an object of the present utility model to provide another fuel filler structure to reduce fuel filler fuel permeation and leakage.

Disclosure of Invention

In view of the above, the present utility model provides a fuel filler structure, and aims to solve the technical problem of providing another fuel filler structure to reduce fuel permeation and leakage of the fuel filler.

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

the utility model provides a fuel filler structure, which mainly comprises:

a fuel tank body;

the oil filling pipe comprises an oil inlet section and an oil outlet section which are vertically connected, and the oil outlet section is connected with the fuel tank body;

the sealing cover is detachably and hermetically connected with the oil inlet section;

the side wall of the valve plate is in sliding sealing fit with the inner wall of the oil inlet section, and the valve plate can longitudinally move; and

The reset mechanism is used for enabling the valve plate to move upwards and reset;

wherein:

the inner wall of the oil outlet section is provided with an inclined surface part matched with the upper side of the valve plate, and the upper side of the valve plate can be attached to the inclined surface part;

after the valve plate moves downwards, the oil inlet section is communicated with the oil outlet section; after the valve plate moves upwards and resets, the connection between the oil inlet section and the oil outlet section can be blocked by the valve plate.

In some embodiments of the utility model, the reset mechanism comprises:

the fixed rod is fixed on the oil inlet section;

the movable rod is spliced with the fixed rod; and

And the return spring is used for enabling the valve plate to move upwards and return.

In some embodiments of the utility model, the upper part of the movable rod is provided with a retainer ring;

the reset spring is sleeved on the movable rod, one end of the reset spring is connected with the check ring, and the other end of the reset spring is connected with the fixed rod.

In some embodiments of the utility model, the middle of the oil outlet section is provided with an oil pipe fixing piece, the oil pipe fixing piece is connected with the fuel tank body, and one end of the oil outlet section, which is far away from the oil inlet section, extends into the fuel tank body.

In some embodiments of the utility model, a tank tube gasket is provided at the junction of the delivery segment and the fuel tank body.

In some embodiments of the utility model, a connecting groove is arranged at the inner edge of the inlet of the oil inlet section, the connecting groove is coaxial with the oil inlet section, and the diameter of the connecting groove gradually decreases from top to bottom;

the inner wall of the oil inlet section is provided with an internal thread, and the internal thread is positioned below the connecting groove;

the sealing cover comprises the following components in sequence:

a screwing part;

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; and

The screw-on section is provided with external threads matched with the internal threads.

In some embodiments of the utility model, the lower end of the sealing part can be attached to the bottom of the connecting groove, and the bottom of the connecting groove is provided with a pipe cover sealing ring.

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

In some embodiments of the utility model, the outer edge of the inlet of the oil inlet section is provided with a lug along the radial direction thereof, the top of the lug is provided with a limit groove, and a plurality of lugs are arranged at intervals along the circumferential direction of the oil inlet section;

the sealing cover further comprises a screwing connection section, and the screwing part, the screwing connection section and the sealing part are sequentially connected;

the rotary sealing connecting section is cylindrical, the rotary sealing connecting 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 matched with the limiting grooves.

In some embodiments of the present utility model, the fuel filler structure further includes a protecting cover, wherein a clamping block is provided on an inner side of a lower portion of the protecting cover, the protecting cover is made of plastic material, and the clamping block can be abutted against a bottom of the protruding block, so that movement of the clamping block and the protecting cover is limited by the protruding block.

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

1. the sealing cover is detachably and hermetically connected with the oil inlet section to reduce the permeation and leakage of the fuel in the oil inlet section.

2. The cooperation through valve plate and inclined plane portion can prevent better that the fuel from going out oily section refluence to advance oily section, when the upside of valve plate and inclined plane portion looks laminating, can guarantee the sealing performance of valve plate to further reduce advance oily 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 fuel filler structure comprising:

a fuel tank body;

the side wall of the valve plate is in sliding sealing fit with the inner wall of the oil inlet section, and the valve plate can move longitudinally; and

wherein:

2. The fuel filler structure of claim 1, wherein the reset mechanism comprises:

the fixed rod is fixed on the oil inlet section;

the movable rod is spliced with the fixed rod; and

3. The fuel filler structure of claim 2, wherein,

a retainer ring is arranged at the upper part of the movable rod;

4. The fuel filler structure of claim 1, wherein the middle portion of the fuel delivery segment has a fuel tube securing member, the fuel tube securing member being connected to the fuel tank body, and wherein an end of the fuel delivery segment remote from the fuel inlet segment extends into the fuel tank body.

5. The fuel filler structure of claim 4, wherein a tank seal is provided at the junction of the fuel outlet section and the fuel tank body.

6. The fuel filler structure of any one of claims 1-5, wherein,

a connecting groove is arranged at the inner edge of the inlet of the oil inlet section, the connecting groove is coaxial with the oil inlet section, and the diameter of the connecting groove is gradually reduced from top to bottom;

the sealing cover comprises the following components which are connected in sequence:

a screwing part;

And the screw-connection section is provided with external threads matched with the internal threads.

7. The fuel filler structure of claim 6, wherein the lower end of the sealing portion is adapted to engage the bottom of the connecting channel, and wherein a tube cap seal is provided at the bottom of the connecting channel.

8. The fuel filler structure of claim 6, wherein a top center of the screw portion is axially formed with a socket.

9. The fuel filler structure of claim 6, wherein,

the outer edge of the inlet of the oil inlet section is provided with a lug along the radial direction of the inlet, the top of the lug is provided with a limit groove, and a plurality of lugs are arranged at intervals along the circumferential direction of the oil inlet section;

the rotary sealing connecting section is cylindrical, the rotary sealing connecting 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 a plurality of limiting teeth matched with the limiting grooves are formed in the bottom of the limiting ring.

10. The fuel filler structure of claim 9, further comprising a protective cover of plastic material, the lower inner side of the protective cover having a latch that can abut against the bottom of the tab to limit movement of the latch and the protective cover through the tab.