KR102566575B1 - Fixing device for toroidal bombe with load divergence function - Google Patents

Abstract

The present invention relates to a toroidal fuel tank fixing device capable of improving structural stability when a vehicle and a toroidal cylinder are fastened, comprising: a body part disposed in a form surrounding a part of the upper part of a fuel tank; and extending from the body part to the outside. It is configured to include one or more mounting parts fastened to the trunk side side, and an elastic member disposed on the inner circumferential side of the central space of the fuel tank, one end supported by the connection part of the body part and the other end connected to the trunk base.

Description

Toroidal fuel tank fixing device with load distribution function {FIXING DEVICE FOR TOROIDAL BOMBE WITH LOAD DIVERGENCE FUNCTION}

The present invention relates to a tank mounting structure of a vehicle using LPG as a fuel, and more particularly, to a toroidal fuel tank fixing device capable of improving structural stability when a vehicle and a toroidal cylinder are fastened.

Since the fuel tank of an existing LPG vehicle has a cylindrical shape and is installed in the trunk of the vehicle, utilization of space in the trunk is very limited. However, recent LPG vehicles utilize a wide trunk space by adopting a structure in which a fuel tank is installed in a space where a spare tire was loaded on the trunk floor. As this structure is adopted, the fuel tank has a ring shape similar to that of a spare tire, so it is also called a donut tank.

Such an LPG fuel tank must have airtightness and structural robustness, and must satisfy safety conditions such as ensuring that unexpectedly leaked gas is discharged outside the vehicle so that fire or explosion does not occur due to unventilated residual gas.

Japanese Unexamined Patent Publication No. 2006-111166 discloses a tank support structure of the prior art, and FIG. 1 is a front cross-sectional view thereof.

Looking at this in detail, the fuel tank 12 is supported on the vehicle body by the tank support structure 10 . A bracket groove 26 is concavely formed in the center of the top plate 14 of the fuel tank 12, and the bracket 34 is inserted into the space. A concave portion 38 is also formed in the bottom plate 16, and a support plate 40 is fitted therein. Through-holes 30 are formed in the fuel tank, and bolts 44 pass through the top and bottom to fix and support the fuel tank 12 to the vehicle body.

Since the toroidal fuel tank has a predetermined space at the center and can be positioned at the location of the spare tire, space efficiency is high and the fastening structure is simple. Conventionally, it was common to fix with a one-point support structure as in the prior art.

However, in the case of adopting such a fixing method, there is a problem in that the support for the fuel tank is lowered and the fuel tank is displaced from its seat or damaged due to causes such as vibration caused by continuous operation or collision of a vehicle. In serious cases, fuel may leak or the fuel tank may come into the room in the event of an accident.

In order to solve this problem, attempts have been made to firmly support the fuel tank by additionally or selectively installing brackets on the bolts, but there are limitations in that design and construction are difficult due to space limitations.

On the other hand, there is an attempt to firmly fasten the vehicle with a member having high rigidity, but in this case, the vibration of the vehicle must be received as it is, and there is a risk of secondary damage when deformation is applied to the vehicle body due to impact.

Accordingly, the present invention has been made to solve the above problems, and provides a toroidal fuel tank fixing device having a structure in which the connection between the vehicle and the fuel tank is excellent and the function of guaranteeing safety against vibration or shock can be maximized aims to

In order to solve the above problems, the present invention is a fixing device for installing a toroidal fuel tank in a trunk, a front body portion 110 surrounding the front upper side of the fuel tank, and a rear body portion covering the rear upper side of the fuel tank. 120, a front mounting part 210 extending outside the front body part and fastened to the trunk side, a rear mounting part 220 extending outside the rear body part and fastening to the trunk side, and a fuel tank Provided is a fuel tank fixing device including an elastic member 420 disposed on an inner circumferential side of a central space and providing elastic force to the fuel tank toward a trunk base.

In addition, an adapter part 430 disposed above the tank bottom and inserted into the lower inner circumference of the elastic member and a fastening member 440 disposed through the adapter part and the tank bottom may be further included.

In addition, a connection part 300 connecting the front body part and the rear body part may be further included.

The connection part supports the upper side of the elastic member.

The connection part includes a top plate part 310 covering the central space, one or more leg parts 320 connecting the top plate part and the front body part and the rear body part, protruding from the bottom of the top plate part and being inserted into the upper inner circumference of the elastic member. It may be configured with a protrusion 330 .

On the other hand, the step portion 321 is formed so that the leg portion disposes the upper plate portion lower, and the front mounting portion and the rear mounting portion have a reinforced portion 202 bent so as to dispose the front body portion and the rear body portion lower. desirable.

According to the configuration of the present invention described above, by improving the one-point fixing method employed in the prior art, the fuel tank is secured through the relationship between the support of four parts on the trunk side and the support of one point elastically fixed on the center side. Accurate and solid support is possible, and it is possible to respond flexibly to accident situations, so there is an effect of preventing the problem of dislocation of the fuel tank and damage to property and human life due to damage of the fuel tank.

In addition, while meeting legal safety regulations, the load on the fuel tank itself can be minimized, and since there is no structural complexity, it is economical in manufacturing and construction, and has excellent effects on vibration and noise.

1 is a perspective view showing a tank support structure in the prior art.
2 is a plan view of a toroidal fuel tank fixing device having a load distribution function according to the present invention.
3 is an exploded perspective view of a toroidal fuel tank fixing device having a load distribution function according to the present invention.
4 is a side cross-sectional view illustrating a coupled state of a toroidal fuel tank fixing device having a load distribution function according to an additional embodiment of the present invention.
5 is a plan view of a coupled state in the embodiment of FIG. 4;

Hereinafter, a toroidal fuel tank fixing device having a load distribution function according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In the following description, when a part is said to be 'connected' to another part, this includes not only the case where it is directly connected but also the case where it is connected with other parts or devices interposed therebetween. In addition, when a certain part 'includes' a certain component, this means that it may further include other components without excluding other components unless otherwise stated.

The present invention is basically a fixing device for fixing and arranging a fuel tank disposed in a trunk of a vehicle, comprising: a body part disposed in a form surrounding a part of the upper side of the fuel tank; and a trunk side side extending from the body part to the outside. It is configured to include one or more mounting parts fastened to, and an elastic member disposed on the inner circumferential side of the central space of the fuel tank, one end supported by the connection part of the body part and the other end connected to the trunk base.

The type of car and the type of trunk described in the present invention do not limit the invention. The part of the trunk where the fuel tank is accommodated will be described as a main example of the part where the spare tire of the rear trunk is placed, but the trunk must be not only the rear trunk of a passenger car but also the trunk disposed in the front of the car, the loading space of a truck, or the interior of a van. It will be understood to include various spaces in which a fuel tank can be disposed, such as a space.

In addition, the fuel tank described in the present invention is formed in a ring shape as a whole and has a central space in the form of a groove or a hole in the center, but the size or shape is not limited to the illustrated example.

In the descriptions of the present invention, the side of the trunk in which the fuel tank is accommodated is defined as the trunk side, and the portion of the trunk facing the bottom of the fuel tank is defined as the trunk base.

2 is a plan view of a toroidal fuel tank fixing device having a load distribution function according to the present invention.

The fixed body 100, which functions as a frame for supporting the overall structure of the fuel tank, is made in correspondence with the shape of the donut-shaped fuel tank, and the upper surface portion 111 and the side portion of the body constituting the fixed body 100 ( 112) covers the top of the fuel tank. In one embodiment, the body portion may have a plate-shaped upper surface portion 111 facing the top plate of the fuel tank and a round side surface portion 112 corresponding to a portion going down along the side surface of the fuel tank.

For example, it may be considered that the body part has a ring shape surrounding the outer periphery of the fuel tank when viewed from above.

However, it is preferable to be disconnected from the equipment space 103 so that the portion of the fuel tank can be exposed in consideration of the arrangement of the check valve and the fuel pump and the connection relationship with the vehicle. In the illustrated state, the equipment space 103 is formed on the left side, and the spaced space 102 is formed on the right side opposite to this. The separation space 102 may function as a predetermined buffering space capable of maintaining a fastening force to the mounting part with the vehicle upon impact from the rear, and a detailed description thereof will be described later.

The front and rear body parts that can be in close contact with the fuel tank of the fixed body 100 are disconnected by the equipment space 103 and the separation space 102, and accordingly, the body part is separated from the front body part 110 and the rear body part ( 120) can be distinguished.

Based on the illustrated state, since the portion where the front mounting unit 210 is disposed is directed toward the front of the vehicle, the corresponding direction is defined as the front for description.

In the illustrated example, the rear body portion 120 is shorter in the circumferential direction than the front body portion 110, but this is variable depending on the shape and type of a fuel tank disposed in the trunk of a vehicle.

A handle hole 101 may be further formed in a portion of the front body 110 and the rear body 120 so that the handle of the fuel tank may be exposed to the outside.

The connection part 300 is disposed to interconnect the front body part 110 and the rear body part 120 from the inner circumferential side. The connection part 300 has a predetermined connection structure to the trunk base. A predetermined elastic member capable of providing or deforming downward elastic force is provided between the trunk base and the connection part 300 in order to transmit and buffer forces applied up and down. may be intervened. Examples related to this will be described later.

A pair of front mounting parts 210 may be configured in the front body part 110 to fasten with the trunk side, and a pair of rear mounting parts 220 in order to fasten with the trunk side also in the rear body part 120. ) can be configured. A mounting hole for passing a fastening member may be formed in each of the mounting parts.

Directions of the front mounting part 210 and the rear mounting part 220 may be determined according to the mounting part of the trunk, more precisely, the shape of the trunk side. In the illustrated embodiment, the front mounting portion 210 extends radially from the front body portion 110, but the rear mounting portion 220 is configured to extend left and right in consideration of spatial limitations in the front and rear directions. Considering the impact from the rear, the front mounting part 210 can distribute the force obliquely with respect to the longitudinal direction of the vehicle, and the rear mounting part 220 can maintain the fixing force from the side, so this directionality improves safety. can be effective for

The above-mentioned front body part 110, rear body part 120, front mounting part 210 and rear mounting part 220 can be mutually coupled in a way that plate-shaped members are bent, cut and welded, and 'for automobiles' It can be formed with a thickness of 3.2T or more to satisfy the crash performance of 'Regulations on Safety of Pressure-Resistant Containers'.

In the prior art, the fuel tank is fixed to the vehicle by directly fastening it to the accommodating part of the trunk. In this case, problems in case of an accident and limitations of durability are as described above.

In the present invention, the fuel tank is not directly fastened to the part of the vehicle, but is connected through the fixed body 100. As described above, the mounting holes that are the points of the front mounting part 210 on both sides and the mounting hole of the rear mounting part 220 Since the trunk base is supported at the bottom of the trunk base and the connection part 300 connecting the front body part 110 and the rear body part 120, a total of 5 points of support is achieved.

3 is an exploded perspective view of a toroidal fuel tank fixing device having a load distribution function according to the present invention.

As described above, in the concept of the present invention, the fuel tank fixing device is supported at 5 points for the trunk area, and in addition to the 4-point support at each mounting portion of the fixing body 100, 1 point support is made at the approximately center side. are losing Accordingly, it should be noted that the fuel tank is not directly coupled to the trunk part.

The added center side support is made by a member for connecting the trunk base and the fixed body 100, mainly the connection part 300 connecting the front body part 110 and the rear body part 120 An elastic member 420 is interposed to connect between the bottom of the trunk and the trunk base.

The elastic member 420 is connected upwardly to the fixed body 100 and downwardly connected to the bottom of the fuel tank and the trunk base. The stone part is composed of

In addition, a fastening member 440 is added to connect the elastic member 420 to the bottom of the fuel tank and the trunk base. An adapter unit 430 may be added for connectivity between the fastening member 440 and the elastic member 420 , and the adapter unit 430 may be inserted into the lower inner circumference of the elastic member 420 .

The fastening member 440 may pass through the top and bottom of the adapter part 430 and be connected to the bottom of the fuel tank and the trunk base. An embodiment related to the connection relationship of the elastic member 420 will be described later.

Meanwhile, the lower surfaces of the front body part 110 and the rear body part 120 may be in contact with the upper part of the fuel tank 12, but friction between metals may undesirably occur when shock and vibration occur according to the operation of the vehicle. There is a possibility. In order to buffer this, it is preferable that an anti-vibration member 410 is interposed between the lower surface of the body part and the upper surface of the fuel tank. The material of the anti-vibration member 410 is not limited, and various materials such as synthetic resin, sponge, rubber, and paper may be applied.

4 is a cross-sectional side view illustrating a coupled state of a toroidal fuel tank fixing device having a load distribution function according to an additional embodiment of the present invention, and FIG. 5 is a plan view thereof.

In the above-described embodiment, one leg part 320 is connected in front and behind the connection part 300 to connect between the front body part 110 and the rear body part 120. The number and arrangement of these leg parts 320 are optional, and in the following embodiment, a form in which a pair of leg parts 320 are radially connected in front and behind the connecting part 300 will be described.

In the illustration of FIG. 4, a state of being cut across the front and back of the center in the width direction is shown, and for convenience, the front portion is rotated to the right.

The connection part 300 is disposed between the front body part 110 and the rear body part 120 as described above, and the plate-shaped upper plate part 310 in which the connection part 300 is formed at the center side, ) and leg parts 320 connecting the inner circumferential side of each body part.

The fuel tank 12 is formed in a ring shape as a whole and has an accommodation space for storing fuel therein, and the center space 30 is formed at the center side and can be coupled to the trunk base as described above.

An upper plate portion 310 may be disposed on the upper portion of the central space 30 to cover it, and the upper plate portion 310 is disposed lower than the leg portion 320 so as to conform in shape to the fuel tank 12. it is desirable to be Accordingly, a stepped portion 321 is formed at a portion of the upper plate portion 310 connected to the leg portion 320, and as shown, the side of the leg portion 320 connected to the upper plate portion 310 is bent to form a stepped portion 321 ) to form

A protruding part 330 protruding downward is formed on the lower side of the upper plate part 310, and the protruding part 330 is inserted into the upper inner circumference of the elastic member 420 to fix the position of the elastic member 420. . In addition, the protruding part 330 may function as a predetermined stopper capable of preventing the fuel tank from moving forward and backward or left and right when an impact occurs.

A plate-shaped tank bottom 31 is formed at the bottom of the central space 30 . A through hole through which the fastening member 440 can pass is formed at the center of the tank bottom 31, and the adapter unit 430 is seated on the upper surface of the tank bottom 31. And the fastening member 440 may be inserted through the tank bottom 31 .

The lower side of the fastening member 440 may be screwed into a predetermined groove or hole formed in the trunk base, for example, and may be made in the form of a pin in some cases to perform a guide function allowing vertical movement. may be considered.

In this way, the adapter part 430 is inserted into the lower part of the elastic member 420, and the adapter part 430 is fixed to the fuel tank 12 and the trunk base by the fastening member 440.

As shown, a predetermined separation distance exists between the lower end of the protruding part 330 and the upper end of the adapter part 430 . It is possible to contract the elastic member 420 at the distance, and the load directly received from the fuel tank 12 through the relationship between the elastic member 420 and the method in which the fixing body 100 surrounds and supports the fuel tank 12 can be distributed.

That is, the elastic member 420 transmits the force from the top to the tank bottom 31 of the fuel tank 12 and performs a function of pushing downward toward the trunk base, thereby buffering the load applied directly. At the same time, it is possible to maintain the position of the fuel tank.

For example, considering a situation in which a load or impact is applied to the upper side of the fixed body 100 and a downward movement or deformation occurs, the fuel A force may be applied directly to the top of the tank 12 . The anti-vibration member 410 can perform a primary buffering function, but in the event of deformation due to an accident, there is a limit to the buffering ability, and results such as deformation of the fuel tank 12, occurrence of cracks, or displacement of the seat may occur. can happen At this time, the elastic member 420 can perform a function of preventing this, and since the elastic member 420 buffers the load applied from the fixed body 100 and pushes the fuel tank 12 toward the trunk base, the deformation It is possible to distribute the load downward while allowing some play for the

On the other hand, considering the case where a rear collision occurs in a vehicle, deformation of the trunk side or the fixed body 100 may occur, and a change in each support point may be expected. In the present invention, the front body portion 110 and the rear body portion 120 are disposed to surround the fuel tank 12 at the upper surface portion 111 and the side portion 112, and when force is generated in the side, the elastic member 420 ) will be deformed in the vertical and horizontal directions to maintain the supported state.

As described above, since the present invention fixes and buffers the fuel tank 12 at five support points through the fixing body 100 without directly fastening the fuel tank 12 to the trunk, the fuel tank 12 is deformed, displaced, or damaged. etc. can be eliminated.

In addition, the fixing body 100 should be designed with a thickness that satisfies legal safety conditions as a whole. In particular, there is a possibility that the greatest stress acts between the body parts and the mounting parts fastened to the trunk side. In consideration of this, the thickness of the connected parts of the front mounting part 210 and the rear mounting part 220 and the front body part 110 and the rear body part 120 is larger than other parts and the bent form of the reinforcing part 202 ) is preferably formed.

In a preferred embodiment, the mounting part may have a downwardly bent shape so that the part connected to each body part is formed lower than the part connected to the trunk side of the mounting part, and the reinforcing part 202 may be formed at the bent part. there is. The bent portion may be formed in a round shape in consideration of load distribution.

According to the above-described embodiment, the part of the mounting part where the mounting hole 201 is disposed is disposed at the highest position, and the upper surface part 111 of the front body part 110 and the rear body part 120 has a lower height than that. , and it can be seen that the upper plate portion 310 of the connection portion 300 is disposed lower than that by the stepped portion 321 of the leg portion 320. By adopting this shape, it is possible to be supported by being optimized for the shape of the fuel tank 12 having a donut shape, but when shock or vibration occurs, it is possible to effectively disperse it vertically and sideways to respond flexibly.

In addition, in the case of the mounting hole 201, it is formed in the form of a predetermined through hole that can be fastened to the trunk side 50, and may be formed long in the longitudinal direction of the mounting portion. A mounting bolt 203 provides a fastening force between the mounting hole 201 and the trunk side. When the shape of the mounting hole 201 is adopted, it is possible to respond flexibly to the shape of the trunk side 50 and the position of the fastening hole during construction, as well as to the deformation of the trunk side 50 and/or the fixed body 100. Since it can be adapted, the protection performance of the fuel tank 12 will be further maximized.

By the toroidal fuel tank fixing device having the load distributing function of the present invention described above, the one-point fixing method employed in the prior art is improved to support four parts on the trunk side and fix through elasticity at the center side. Accurate and solid support of the fuel tank is possible through the relationship of point support, and it is possible to respond flexibly to accident situations, thereby preventing the problem of the fuel tank being displaced and the damage to property and human life due to the damage of the fuel tank. There is an advantage to being

In addition, while meeting legal safety regulations, it is economical in manufacturing and construction and excellent in vibration and noise.

In the above, the present invention has been described in detail based on examples and accompanying drawings. However, the scope of the present invention is not limited by the above embodiments and drawings, and the scope of the present invention will be limited only by the content described in the claims below.

12 ... fuel tank 30 ... through hole
31 ... tank bottom 50 ... trunk side
100 ... fixed body 101 ... handle part
102 ... separation space 103 ... equipment space
110... Front body 111... Upper surface
112... side part 120... rear body part
201 ... mounting hole 202 ... reinforcement part
203 ... mounting bolt 210 ... front mounting part
220 ... rear mounting portion 300 ... connection portion
310... top plate 320... leg part
321 ... step portion 330 ... protrusion
410 ... anti-vibration member 420 ... elastic member
430 ... adapter part 440 ... fastening member

Claims (5)

A fixing device for installing a toroidal fuel tank in a trunk,
a front body portion 110 surrounding the upper front side of the fuel tank;
a rear body portion 120 surrounding the rear upper portion of the fuel tank;
a front mounting part 210 extending outside the front body part and fastened to the trunk side;
a rear mounting part 220 extending outside the rear body part and fastened to the trunk side;
A fuel tank fixing device including an elastic member (420) disposed on an inner circumferential side of a central space of the fuel tank and providing elastic force to the fuel tank toward the trunk base.
According to claim 1,
an adapter unit 430 disposed on the upper side of the tank bottom and inserted into the inner circumference of the lower side of the elastic member; and
The fuel tank fixing device further comprising a fastening member 440 disposed through the adapter part and the tank bottom.
According to claim 2,
A connection part 300 connecting the front body part and the rear body part; further comprising,
The connection part,
A fuel tank fixing device supporting the upper side of the elastic member.
According to claim 3,
The connection part,
An upper plate portion 310 covering the central space, one or more leg portions 320 connecting the upper plate portion to the front body portion and the rear body portion, and a protruding portion 330 protruding from the bottom portion of the top plate portion and inserted into the upper inner circumference of the elastic member A fuel tank fixing device having a.
According to claim 4,
In the leg part, a stepped part 321 is formed so as to dispose the upper plate part lower,
The fuel tank fixing device having a reinforcement part (202) bent so that the front mounting part and the rear mounting part dispose the front body part and the rear body part lower.

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