KR101960325B1 - A fuel tank of bubble making apparatus - Google Patents

Abstract

The present invention relates to a fuel tank for a vehicle, having a device for suppressing the generation of air bubbles. The fuel tank for a vehicle prevents abnormal explosion of an engine, which occurs due to air bubbles when a fuel is supplied to the engine and combusted, by preventing the air bubbles contained in the fuel. Also, the fuel tank for a vehicle minimizes that the fuel leans to one side in a fuel tank or slops like waves. The fuel tank for a vehicle also offsets pressure applied to the fuel tank due to a collision of a vehicle and, therefore, can prevent the fuel tank from exploding due to the pressure. The fuel tank for a vehicle, having the device for suppressing the generation of air bubbles, includes: a housing (110) having a structure of a dual pipe including a hollow unit (114) having an outer wall (111) and an inner wall (112); a partition (130) in which the fuel can flow in the lower part, wherein both ends of the partition (130) are fixed to the upper part and the lower part in the housing; and an oil hole (120) installed on one side of the housing.

Description

Technical Field [0001] The present invention relates to a fuel tank for a bubble generator,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a fuel tank for a vehicle, and more particularly, to a fuel tank of a vehicle, which removes bubbles contained in the fuel and generates bubbles which can prevent an abnormal explosion of the engine caused by bubbles when the fuel is supplied to the engine And a fuel tank for a vehicle having a restraining device.

Generally, a fuel supply system of a vehicle plays a role of supplying fuel to an evaporator or a fuel injection apparatus optimally in accordance with the operating state of the engine, and it includes a fuel tank for storing the fuel, A fuel pump for feeding the fuel and a fuel supply pipe for supplying the fuel supplied from the fuel tank to the combustion chamber.

Conventional fuel tanks are made of steel or plastic, and a large-capacity fuel tank is provided with a baffle for preventing the fuel from leaning to one side during traveling on a curve road, and a ventilation device Is installed

1 is a schematic perspective view of a conventional fuel device.

As shown in the figure, the fuel tank 2 in which the fuel is filled is provided with fuel

And a fuel injection cap 6 is attached to an upper portion of the fuel injection pipe 4

Further, an evaporative gas separator 14 for collecting the fuel evaporated gas and a vent valve 16 for stopping the operation of the fuel injector when the fuel is filled are provided on the upper portion of the fuel tank 2

The evaporated gas separated in the evaporative gas separator 14 is sent to the canister 10 through the evaporative gas pipe 8. The canister 10 is filled with particulate activated carbon. Therefore, the evaporated gas generated in the fuel tank 2 is introduced into the canister through the evaporation gas pipe 8 and then adsorbed on the surface of the activated carbon particles. The adsorbed gas is separated from the activated carbon at the time of opening the purge control solenoid valve Next, a configuration is known in which the air is supplied to the intake manifold through the purge line 12 and burned.

However, since the fuel of the fuel tank includes bubbles, when the fuel is supplied to the engine, the bubbles cause an abnormal explosion of the engine.

Public Utility Model Publication No. 1999-0019556 (published June 15, 1999)

The present invention is intended to eliminate bubbles contained in the fuel so as to prevent an abnormal explosion of the engine caused by bubbles when the fuel is supplied to the engine and burned.

In addition, the present invention eliminates the iron content in the fuel and minimizes the likelihood of the fuel being squeezed or tumbled in the fuel tank.

Further, it is possible to prevent the fuel tank from being exploded by the pressure by canceling the pressure applied to the fuel tank due to collision of the vehicle or the like, to prevent the fuel tank from being broken by attenuating the vibration and noise caused by the traveling vehicle, While maintaining the strength of the weight.

A fuel tank for a vehicle having a bubble generation suppressing device according to the present invention is a fuel tank for a vehicle having a structure of a double pipe structure having a hollow portion formed by an outer wall and an inner wall, both ends being fixed to upper and lower portions of the inside of the housing, A partition wall having a through-hole formed therein, and a discharge port provided at one side of the housing, The fuel filler has a hollow cylindrical structure, a body for injecting fuel into the fuel tank by inserting a nozzle of the lubricator, and a turbulent fuel which protrudes while having a straight plate structure on the inner surface of the body, A sponge for attaching to the outer surface of the air bubble suppressing vane and adsorbing air bubbles contained in the fuel to be injected to remove air bubbles; And a bubble removing hole penetrating the bubble removing mesh, wherein the bubble removing hole has a funnel shape having a diameter larger than that of the lower portion.

The housing includes a hollow portion formed by the outer wall and the inner wall, a sound insulating plate provided on the hollow portion, protrusions formed on the upper and lower surfaces of the unit cavity formed by the sound insulating plate, and an elastic body fitted to the protrusions; Wherein the sound insulating plate has a truss-shaped partition wall shape and further comprises a vibration damping portion; The other end of the vibration damping portion is fitted to a case which is slidably inserted into a through hole formed in the upper surface of the rod fixed to the reinforcing rib on the bottom surface of the housing of the fuel tank, , A movable plate integrally connected to the rod, a groove formed in the outer surface, a sealing ring inserted in the groove, a groove formed in the bottom, a partition plate provided on the inner side of the case and having micropores at the center, A first spring coupled between a groove formed on a bottom surface of the moving plate and a groove formed on an upper surface of the partition plate, a second spring provided between an upper surface of the moving plate and an upper bottom surface of the case, And a buffer space formed on the side surface with a communication hole.

Further, the housing further includes a coupling portion; The engaging portion is formed of an elastic seal ring inserted into an arcuate groove formed in one end surface of the second housing and having wings extending on both sides in contact with the first housing, Further comprising; The expansion part is made of a metal or a high strength plastic material and has a hollow cylindrical shape or a box shape and is fixed to the outer surface of the housing and is made of elastic or restorable material and is fixed to the outer surface of the housing, A ventilation hole penetrating the upper portion of the body and communicating with the outside air; an exhaust hole penetrating the outer surface of the housing and communicating the inside of the housing with the inside of the body; and a floating body further provided between the partition walls of the housing; The float body has an air bag provided therein and a communicating hole formed in the middle of the floating body; The diameter of the upper portion of the communication hole is larger than the diameter of the lower portion, and a wave preventing portion is further provided inside the housing; The anti-wave part includes: a support part fixed to an upper surface of the housing and having a groove formed at a central lower surface thereof; a cylindrical hollow structure having an upper surface fixed to the support part and a lower surface opened with an outer cylinder; An inner cylinder coupled to the outer cylinder so as to be movable, a pressing plate formed on the lower surface of the inner cylinder and pressing the float floating on the upper surface of the fuel, A spring which is fixed between a groove formed on a lower surface of the support portion and a groove formed on an upper surface of the support plate and which provides elasticity and restoring force to the inner cylinder and a space portion formed by the inner surface of the inner cylinder, And a hollow portion for reducing the weight of the inner cylinder.

The present invention relates to an effect of removing bubbles contained in a fuel to prevent an abnormal explosion of an engine caused by bubbles when the fuel is supplied to the engine and burned,

Removing the iron contained in the fuel, preventing the fuel from leaning in the fuel tank,

The effect of preventing the fuel tank from being exploded by the pressure by canceling the pressure applied to the fuel tank by collision of the vehicle or the like,

There is an effect that the fuel tank is prevented from being broken by attenuating the vibration and noise caused by the vehicle running, and the weight of the fuel tank is reduced while maintaining the strength of the fuel tank.

1 is a schematic perspective view of a conventional fuel device,
2 is a sectional view of the fuel tank of the present invention,
3 is an enlarged cross-sectional view of the fuel tank housing of the present invention,
4 is a sectional view of a vibration damping portion according to the present invention,
5 is an enlarged cross-sectional view of a coupling portion according to the present invention,
6 is an enlarged cross-sectional view of the expansion part of the present invention,
7 is an enlarged cross-sectional view of the scoop of the present invention,
8 is an enlarged cross-sectional view of a wave preventing part of the present invention,
9 is a cross-sectional view and a partially enlarged cross-sectional view of the inventive filling port;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. For reference, the size, line thickness, and the like of the components shown in the drawings referred to in describing the present invention may be somewhat exaggerated for ease of understanding.

The terms used in the description of the present invention are defined in consideration of the functions of the present invention, and thus may be changed depending on the user, the intention of the operator, customs, and the like. Therefore, the definition of this term should be based on the entire contents of this specification.

Also, in this application, the terms " comprises, " " having ", and the like refer to the presence of a particular number, step, operation, component, But do not preclude the presence or addition of a feature, a number, a step, an operation, an element, a component, or a combination thereof.

It is to be understood that the present invention is not limited to the disclosed embodiments, but may be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, It is provided to let you know completely.

Therefore, it is intended that the present invention covers the modifications and variations of this form, and that the embodiments herein be described in detail in the specification. It is to be understood, however, that the appended claims are intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the present invention, and that the singular forms " Includes plural representation unless expressly stated otherwise.

In the following description, well-known functions or constructions are not described in order to obscure the subject matter of the present invention

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.

2 is a sectional view of the fuel tank of the present invention.

As shown in the drawings, the fuel tank 100 of the present invention includes a housing 110, a gas inlet 120, a partition 130, a vibration damping unit 140, a floating body 150, an expansion unit 160, (170), and a coupling unit (180).

Since the conventional partition wall has a structure protruding from the lower surface of the inside of the fuel tank and is not connected to the upper and lower surfaces of the fuel tank, the partition wall 130 of this embodiment has no function of reinforcing, So that it has a function of minimizing the sluggishness of the fuel and a function of reinforcing the fuel tank.

It is needless to say that a flow hole 131 is formed in the lower end of the partition 130 to allow fuel to flow between the partition walls.

3 is an enlarged cross-sectional view of the fuel tank housing of the present invention.

As shown in the figure, the body of the housing 110 has a double pipe structure including a hollow portion 114 formed by the outer wall 111 and the inner wall 112, and the hollow portion 114 is provided with a sound insulating plate 113 Is formed.

The sound insulating plate 113 has a truss structure. In the unit cavity 116 formed by the sound insulating plate of the truss structure, incident sound waves generated in the noise source are reflected by the sound insulating plate 113, Resonance to attenuate it, so that the sound insulation performance is improved.

A protrusion 117 is formed on the upper and lower surfaces of the unit cavity 116. An elastic body 115 is fitted to the protrusion and is resiliently biased to add vibration and noise to the housing 110 .

Since the sound insulating plate 113 is formed in the shape of a partition wall constituted by a triangular unit space of a truss structure, the sound insulating plate 113 of the triangular structure can not easily be deformed due to impact or vibration, The housing 110 is formed as a double tube having an inner and an outer wall so that the weight of the housing 110 can be reduced while the overall weight of the housing 110 can be reduced and a high strength can be maintained.

4 is a cross-sectional view of a vibration damping portion of the present invention.

As shown in the figure, a reinforcing rib 118 having a recessed structure is formed on the bottom surface of the housing 110 to reinforce the fuel tank, thereby imparting strength to the housing. On the bottom surface of the reinforcing rib 118, (140), and is connected to the vehicle body (B).

The vibration damping unit 140 is divided into a case 141, a moving plate 143, a partition plate 144, first and second springs 145a and 145b, and a buffer space 146.

The case 141 is made of a metal or a high-strength plastic material, and has a hollow cylindrical or rectangular box shape, and one side is fixed to the vehicle body B.

A rod 142 is fixed to a reinforcing rib 118 provided on a bottom surface of the fuel tank and a moving plate 143 connected to the rod 142 is passed through a rod 142 formed on the upper surface of the case 141 So that the ball can slide.

The moving plate 143 is integrally connected to the rod 142. The rod 142 is fixed to the bottom surface of the reinforcing rib 118 of the fuel tank and has grooves formed on its outer surface, The seal ring 143a is inserted so that the moving plate 143 is slidably moved while maintaining the sealed state with the inner surface of the case 141. [

Further, a groove is formed in the bottom surface of the moving plate 143, and a first spring 145a, which will be described later, is engaged.

It goes without saying that the second spring 145b is formed between the upper surface of the moving plate 143 and the upper bottom surface of the case 141. [

The partition plate 144 protrudes inwardly of the case 141 to form a buffer space 146 to be described later and a micro hole 144a is formed at the center of the partition plate 144 And a groove is formed on the upper surface, and the first spring 145a, which will be described later, is engaged.

The first spring 145a is coupled between a groove formed on the bottom surface of the moving plate 143 and a groove formed on the upper surface of the partition plate 144 to elastically support the moving plate 143. [

The buffer space 146 is a space defined by the partition plate 144 that divides the case 141 upward and downward, and a communication hole 141a is formed on a side surface thereof.

As to the operation of the vibration damping unit 140,

Since the moving plate 143 is supported by the first and second springs 145a and 145b and the first and second springs 145a and 145b are supported by the moving plate 143, (145b) absorbs vibration while being elastically deformed and restored.

The minor vibration causes the elastic restoring force of the first and second springs 145a and 145b to attenuate.

The moving plate 143 is lowered to compress the air, and the compressed air is discharged through the micro holes 144a provided in the partition plate 144, The discharged air is discharged through the communication hole 141a formed in the outer surface of the buffering space 146. Therefore, when the air is compressed and discharged to the micropores 144a, the buffer space 146 and the communication hole 141a It is possible to smoothly attenuate the sudden vibration by the fluid resistance, so that vibration and noise of the fuel tank can be minimized, so that damage due to vibration can be minimized.

5 is an enlarged cross-sectional view of a coupling portion according to the present invention.

The housing 110 as a body constituting the fuel tank is divided into a first housing 110a and a second housing 110b (see FIG. 2). The first and second housings 110a and 110b are connected to the vehicle 110 The first and second housings 110a and 110b are slid and contracted with each other.

Therefore, it has the effect of attenuating the impact, thereby preventing the housing 110, which is the body of the fuel tank, from being damaged.

In this embodiment, the sealing structure of the coupling portion 180 to which the first and second housings 110a and 110b are coupled will be described.

The coupling part 180 is characterized by a sealing ring 200 of an elastic material inserted and fixed in an arc-shaped groove 210 formed at one end surface of the second housing 110b, 1, the wings 230 are formed on both sides of the portion contacting the housing 110a.

When the seal ring 200 of the engaging portion 180 having the above-described structure is pressed, the seal ring 200 is elastically deformed and inserted and fixed in the groove 210 formed in the second housing 110b, The wing portion 230 formed on the seal ring 200 has an effect of firmly fixing the ring 200 to the second housing 110b and the contact area between the first housing 110a and the seal ring 200 The first and second housings 110a and 110b are prevented from being leaked to the outside even if the first and second housings 110a and 110b are slid down to reduce the shock to buffer the impact. Effect.

6 is an enlarged cross-sectional view of the expansion part of the present invention.

The illustrated expanding portion has a function of interlocking with the engaging portion 180 of Fig. 5, and has a function of lowering the pressure in the fuel tank when the fuel tank is contracted due to collision or the like as described with reference to Fig.

As shown in the figure, the expansion unit 160 is divided into a body 161, an expansion plate 162, a vent hole 163, and an exhaust hole 164.

The body 161 is made of a metal or a high-strength plastic material and has a hollow cylindrical or box shape and is fixed to the outer surface of the housing 110. A vent hole 163 is formed in the upper portion of the body 161.

The expansion plate 162 is formed of an elastic and restorable material and is fixed to the outer surface of the housing 110 while dividing the inside of the body 161 into upper and lower portions.

The air vent 163 penetrates the upper part of the body and functions to communicate the inside of the body 161 with the outside air.

The exhaust hole 164 is provided through the outer surface of the housing 110 to communicate the inside of the body 110 with the inside of the body 110.

The first and second housings 110a and 110b of the fuel tank are pressed by the collision of the vehicle and the like so that the first and second housings 110a and 110b The pressure inside the fuel tank is increased, and the air inside the fuel tank due to the increased pressure is discharged to the exhaust hole 164, where the expansion plate 162 is inflated by the pressure of the exhausted air So that the area of the fuel tank is enlarged. As a result, the pressure can be lowered.

7 is an enlarged cross-sectional view of the attachment of the present invention.

The float body 150 of the present embodiment is provided between the partitions 130 of the fuel tank and is floated on top of the fuel to prevent the fuel from jarring as if the fuel is swollen due to vibration, (See Figure 2).

As shown in the figure, the floating body 150 is formed of a soft synthetic resin, and an air bag 151 is formed therein to have buoyancy. A communication hole 152 is formed in the middle of the floating body, And the diameter D2 of the upper portion of the communication hole 152 is larger than the diameter D1 of the lower portion.

As a result, the fuel floats as if the fuel rushes due to vibration, rapid acceleration, and sudden stop of the vehicle. Since the floating body 150 is floated on the upper surface of the fuel, So that the outer surface of the body 150 is attenuated to minimize the occurrence of swelling of the fuel as a wave.

In addition, since the communication hole formed in the floating body 150 has a funnel-shaped structure in which the diameter D2 of the upper portion is larger than the diameter D1 of the lower portion, the fuel is prevented from flowing back from the lower portion to the upper portion, The flow from the upper part to the lower part has a function of smoothness.

8 is an enlarged sectional view of a wave preventing part of the present invention.

As described with reference to FIG. 7, the floating body 150 prevents a certain portion of the fuel from being shaken. However, if a sudden change in speed such as rapid acceleration, sudden braking, or collision occurs, the floating body 150 may be churned like fuel In this embodiment, a wave preventing part 170 for minimizing the swinging of the float body 150 is proposed.

As shown in the figure, the wave preventing part 170 includes a support part 171, an outer cylinder 172, an inner cylinder 173, a pressure plate 174, a spring 175, a support plate 176, and a hollow part 177 Respectively.

The support portion 171 is fixed to the upper surface of the inside of the housing 110, which is the body of the fuel tank, and a groove is formed at the central lower surface thereof, and a spring 175 described later is fixed.

The outer cylinder 172 has a hollow cylindrical structure. The upper surface of the outer cylinder 172 is fixed to the support portion 171, and the lower surface of the outer cylinder 172 is opened so that an inner cylinder 173 described later is slidably engaged.

The inner cylinder 173 has a hollow cylindrical structure, and is inserted into the outer cylinder 172 and coupled to be movable.

The pressure plate 174 is formed on the lower surface of the inner cylinder 173 and has a flat plate shape and functions to press the floating body 150 floating on the upper surface of the fuel.

The spring 175 is fixed between a groove formed on the lower surface of the support portion 171 and a groove formed on the upper surface of a support plate 176 to be described later so as to impart elasticity and restoring force to the inner cylinder 173.

The support plate 176 is provided on the upper portion of the inner cylinder 173 and a groove is formed on the upper surface of the support plate 176 to fix the spring 175.

The hollow portion 177 is a space formed by the inner surface of the inner cylinder 177 and functions to lighten the weight of the inner cylinder 173. [

The inner cylinder 173 is slidable into the outer cylinder 172 so that the inner cylinder 173 descends due to its own weight to hold the upper surface of the floating body 150 will be. In this state, the fuel is swung by an external sudden shock to generate waves, and the floating body is prevented by the elastic force of the spring 175 so that the floating body is lifted upward, so that the floating body is located at the floating position of the upper surface of the fuel, This has the effect of continuously preventing the fuel from swirling like a wave.

Hereinafter, the structure of the fuel supply port according to the second embodiment of the present invention will be described.

9 is a cross-sectional view of the oil port.

As shown in the figure, the air supply port 120 includes a body 121, a bubble suppression vane 122, a sponge 123, a backflow prevention plate 124, a bubble removal net 125, a lid 126, .

The body 121 has a hollow cylindrical structure, and a nozzle of a lubricator is inserted to inject fuel into the fuel tank. A flow sensor S is formed on the lower side of the body 121. When the flow sensor S senses that fuel is injected into the fuel inlet, the control unit transmits a signal to a control unit When fuel is injected from the flow rate sensor S, it is determined whether or not the start of the vehicle is turned off upon receiving the sensed signal. When the vehicle is started, an alarm sound is generated, It has the function to prevent.

A seat 124C is formed on the inner surface of the body 121 to selectively seal the oil port 120 in conjunction with the backflow prevention plate 124 described later.

The air bubble suppression vane 122 protrudes from the inner surface of the body 121 while having a straight plate structure. Since the bubble inhibiting vane 122 having such a structure is injected while the fuel injected from the fuel injection port rapidly forms turbulence, a large amount of air bubbles are contained in the fuel, and the fuel injected in the turbulent flow is injected into the air bubbles So that the inhibiting vanes 122 are injected with laminar flow so that bubble generation is minimized.

The fuel with the minimum bubbles is supplied to the engine and can prevent an abnormal explosion of the engine caused by the bubbles when it is burned.

The sponge 123 is attached to the outer surface of the air bubble suppression vane 122 and has a function of adsorbing air bubbles contained in the fuel to be injected and removing air bubbles.

The backflow preventing plate 124 is rotatably coupled to the inside of the body 121 by a hinge 124a at one side thereof and a chain 127 is coupled to an upper surface of the backflow preventing plate 124, A torsion spring 124b is provided to provide an elastic force in a direction in which the backflow prevention plate closes the air supply port. When the lid 126, which will be described later, is screwed to the main body 121, the oil port is sealed in contact with the seat 124C.

Therefore, even if the fuel tank is tilted or turned over due to collision or rollover of the vehicle, the fuel does not flow out through the injection port.

The bubble removing net 125 has a hemispherical shape and is coupled to an end portion of the body 121 in the fuel tank direction, and a bubble removing hole 125a penetrates the hemispherical surface. Such a bubble removing hole 125a serves to crush the bubbles contained in the fuel, thereby minimizing the generation of bubbles in the fuel.

Since the bubble removing hole 125a has a funnel-shaped structure in which the upper diameter D2 is larger than the lower diameter D1, it is possible to prevent the fuel from flowing from the upper portion to the lower portion Is a function to smooth out.

In addition, the bubble removing network has a function of filtering foreign matters in the fuel, and has a function of removing iron powder contained in the fuel by forming the bubble removing net 125 as a permanent magnet.

A chain 127 is fixed to the lower surface of the lid 126 by screwing the lid 126 with the body 121 to open and close the supply port and the other side of the chain 127 is connected to the upper portion of the backflow prevention plate 124 Lt; / RTI >

Accordingly, when the user opens the lid 126 and removes the lid 126 from the fuel supply port for lubrication, the check valve 124 connected to the bottom of the lid is opened and the fuel can be injected.

The chain 127 is fixed to the bottom surface of the lid 126 and the upper surface of the backflow prevention plate 124 so as to selectively open and close the oil supply port in conjunction with opening and closing of the lid 126.

As described above, the backflow preventing plate interlocking with the lid has a simple structure and effectively seals the gas supply port, so that it is possible to reduce the production cost, minimize the defective product, equalize and standardize the product, , Raw materials and labor costs can be reduced, and productivity and productivity can be increased by reducing defective products and increasing utilization rate.

Further, since the structure is simple, the assembling and transferring operations are smooth and simplified, and the cycle time of the assembling process is shortened, so that the productivity can be further improved

Hereinafter, the material of the seal ring 200 according to the third embodiment of the present invention will be described.

Fuel tanks installed in vehicles are susceptible to salty water caused by salt water because they can come into contact with the same salt water as sea water when operating in coastal areas. As a cause of salt damage, salinity scattered in the atmosphere accompanied by tidal winds is blown into the fuel tank and adheres to the surface of the seal ring, or salinity floating in the atmosphere at the time of rainfall When the seal ring 200 is corroded by brine, the seal ring 200 may be less effective in sealing the fuel tank. Thus, in this embodiment, the material of the seal ring 200 Thereby minimizing corrosion to salt water.

The sealing ring may be made of a material comprising 25 to 40 parts by weight of a fatty acid amide compound as a water repellent agent, 40 to 80 parts by weight of carbon black, 0.01 to 3 parts by weight of cobalt, 5 to 10 parts by weight of a quinone- And a rubber component.

Such a rubber composition has improved heat aging resistance, can prevent deterioration of rubber, has an effect of reinforcing, has salt like marine, and has excellent durability even when used for a long time in a high temperature and high humidity region .

By adopting a rubber composition as a seal ring material that can minimize the prevention of corrosion and aging of rubber in a high temperature / high humidity environment with severe external conditions, it is possible to continuously maintain the sealing force of the fuel tank equipped with the seal ring .

Industrial Applicability As described above, the present invention prevents the fuel from leaking out of the fuel tank when the vehicle is rollover, thereby preventing the occurrence of bubbles in the fuel and preventing the generation of air bubbles in the fuel, An effect of preventing the fuel from leaking to one side in the fuel tank or swinging like a wave, an effect of preventing the fuel tank from exploding due to pressure by canceling the pressure applied to the fuel tank by collision of the vehicle or the like , It is possible to prevent the fuel tank from being damaged by attenuating vibration and noise caused by the vehicle running, and to reduce the weight while maintaining the strength of the fuel tank.

100: fuel tank 110: housing
110a: first housing 110b: second housing
111: outer wall 112: inner wall
113: Sound insulating plate 114: Hollow portion
115: elastic body 116: unit cavity
117: projection 118: reinforcing rib
120: oil port 121: body
122: air bubble suppression wing 123: sponge
124: backflow prevention plate 124a: hinge
124b: Torsion spring 124c: Sheet
125: Air bubble prevention network 125a: Air bubble removal ball
125: lid 127: chain
130: partition 131:
140: Vibration damping part 141: Case
141a: communicating hole 142: rod
143: moving plate 143a: sealing ring
144: partition plate 144a:
145a: first spring 145b: second spring
150:
151: air bag 152: communication hole
160: Expansion unit 161: Body
162: Expansion plate 163:
164: exhaust hole 170: anti-wave part
171: Support part 172: Outer cylinder
173: inner cylinder 174:
175: spring 176:
177: hollow part 180: engaging part
200: seal ring 210: groove
220: protruding portion 230: wing portion
B: Body S: Flow sensor

Claims (3)

A housing 110 having a double pipe structure having a hollow portion 114 formed by the outer wall 111 and the inner wall 112,
Both ends are fixed to the upper and lower ends of the housing, and a partition wall 130 having a flow hole 131 through which fuel can flow,
(120) provided at one side of the housing;
The fuel supply port 120,
A body 121 having a hollow cylindrical structure and having a nozzle of a lubricator inserted therein to inject fuel into the fuel tank,
A bubble suppression vane 122 protruding from the inner surface of the body 121 with a straight plate structure for injecting the turbulent fuel rapidly injected from the air inlet with laminar flow,
A sponge 123 attached to the outer surface of the air bubble suppression vane 122 to adsorb air bubbles contained in the fuel to be injected to remove air bubbles,
A hemispherical bubble removal net 125 of permanent magnet material coupled to an end of the body 121 in the direction of the fuel tank,
The bubble removing net 125 is passed through a bubble removing hole 125a,
Wherein the bubble removing hole (125a) has a funnel-shaped structure in which the upper diameter (D2) is larger than the lower diameter (D1). The method according to claim 1,
The housing (110)
A hollow portion 114 formed by the outer wall 111 and the inner wall 112,
A sound insulating plate 113 provided in the hollow portion 114,
A protrusion 117 is formed on the upper and lower surfaces of the unit cavity 116 formed by the sound insulating plate, and an elastic body 115 is fitted to the protrusion.
The sound insulating plate 113 has a truss-shaped partition wall shape,
Further comprising a vibration damping part (141);
The vibration damping section (141)
And a rod 142 fixed to the reinforcing rib 118 of the bottom surface of the housing 110 of the fuel tank is fixed to a through hole formed in the upper surface of the fuel tank, A combined case 141,
A moving plate 143 integrally connected to the rod 142, a groove formed in the outer surface of which a sealing ring 143a is inserted,
A minute hole 144a is formed at the center of the case 141, a partition plate 144 having a groove is formed on the upper surface thereof,
A first spring 145a coupled between the groove formed on the bottom surface of the moving plate 143 and the groove formed on the upper surface of the partition plate 144,
A second spring 145b provided between the upper surface of the moving plate 143 and the upper bottom surface of the case 141,
And a buffer space (146) formed by a partition plate (144) dividing the case (141) upward and downward and having a communication hole (141a) formed on a side surface thereof. Tank. 3. The method of claim 2,
The housing 110 is further provided with a coupling portion 180;
The engaging portion (180)
A sealing ring 210 made of an elastic material having a wing portion 230 that is inserted into and fixed to an arc-shaped groove 210 formed at one end surface of the second housing 110b, (200)
The housing (110) further includes an expansion part (160) on an outer surface thereof;
The expanding portion (160)
A body 161 made of a metal or high-strength plastic material, hollow cylindrical or box-shaped and fixed to the outer surface of the housing 110,
An expansion plate 162 fixed to the outer surface of the housing 110 while separating the inside of the body 161 from the upper and the lower sides,
A vent hole 163 penetrating the upper portion of the body for communicating the outside air,
And an exhaust hole 164 which penetrates the outer surface of the housing 110 and communicates the inside of the body 110 with the inside of the body 161,
A floating body 150 is further provided between the partitions of the housing 110;
The float (150)
An air bag 151 provided inside,
A communicating hole 152 is formed in the middle of the floating body; The diameter D2 of the upper portion of the communication hole 152 is larger than the diameter D1 of the lower portion,
The housing 110 further includes an anti-wave part 170;
The anti-wave portion 170,
A support portion 171 fixed to the upper surface of the inside of the housing 110,
The upper surface is fixed to the support portion 171, and the lower surface is an outer cylindrical tube 172 which is opened,
An inner cylinder 173 having a hollow cylindrical structure and inserted into the outer cylinder 172 so as to be movable,
A press plate 174 formed on the lower surface of the inner cylinder 173 and having a flat plate shape and pressing the floating body 150 floating on the upper surface of the fuel,
A support plate 176 provided on the upper portion of the inner cylinder 173 and having a groove formed on the upper surface thereof,
A spring 175 fixed between the groove formed on the lower surface of the support portion 171 and the groove formed on the upper surface of the support plate 176 and giving elasticity and restoring force to the inner cylinder 173,
And a hollow portion (177) formed by an inner surface of the inner cylindrical portion (173), the hollow portion (177) for reducing the weight of the inner cylindrical portion (173).

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