KR102601023B1 - Fixing device for toroidal bombe with load divergence function - Google Patents

Abstract

The present invention relates to a donut-shaped fuel tank fixing device that can improve structural stability when connecting a vehicle and a donut-shaped bomb. It is a fixing device for installing a donut-shaped fuel tank on a trunk base, and is a fixing device for installing a donut-shaped fuel tank on a trunk base. It is a fixing device for installation in the front body part 110 surrounding the front upper side of the fuel tank, the rear body part 120 surrounding the rear upper side of the fuel tank, and extends to the outside of the front body part and is fastened to the trunk side. a front mounting part 210, a rear mounting part 220 extending to the outside of the rear body part and fastened to the trunk side, a top part 310 covering the central space of the fuel tank, the top part, the front body part, and the rear A plurality of leg parts 320 connecting the body parts, a protruding part 330 protruding downward to prevent the fuel tank from moving forward or left and right, and a connecting part 300 connected to the trunk base at the lower side of the upper plate part, A fuel tank fixing device including an elastic member 420 connecting the bottom of the connection portion and the trunk base is provided.

Description

Donut-shaped 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 for a vehicle using LPG as fuel, and more specifically, to a donut-shaped fuel tank fixing device that can improve structural stability when fastening a vehicle and a donut-shaped bomb.

The fuel tank of existing LPG vehicles is cylindrical and is installed in the trunk of the vehicle, so the space utilization of the trunk was very limited. However, recent LPG vehicles have adopted a structure in which the fuel tank is installed in the space where the spare tire was stored on the bottom of the trunk, making wide use of the trunk space. By adopting this structure, the fuel tank has a ring shape similar to a spare tire, so it is also called a donut tank.

These LPG fuel tanks must have airtightness and structural rigidity, and must meet safety conditions such as ensuring that unexpectedly leaked gas is discharged outside the vehicle to prevent fire or explosion due to residual gas that cannot be ventilated.

Japanese Patent Laid-Open No. 2006-111166 discloses a tank support structure of the prior art, and Figure 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 formed concavely in the center of the top plate 14 of the fuel tank 12, and a 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 inserted therein. A through hole 30 is formed in the fuel tank, and bolts 44 pass through the top and bottom to secure and support the fuel tank 12 to the vehicle body.

In this way, the donut-shaped fuel tank has a predetermined space at the center so that it can be placed at the location of the spare tire, so not only does it have high spatial efficiency, but its fastening structure also has the advantage of being simple. In the past, it was common to fix it with a one-point support structure as in the prior art described above.

However, when this fixing method is adopted, the support force for the fuel tank is reduced due to vibration caused by continuous operation or vehicle collision, and a problem occurs in which the fuel tank is dislodged from its seat or damaged. In serious cases, fuel may leak or the fuel tank may enter the room during 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 that make design and construction difficult due to space limitations.

On the other hand, there are attempts to firmly fasten the vehicle to a member with high rigidity, but in this case, not only must the vehicle's vibration be directly received, but there is also a risk of secondary damage occurring if the vehicle body is deformed by impact, etc.

Accordingly, the present invention was developed to solve the above problems, and provides a donut-shaped fuel tank fixing device that has a structure that has excellent connectivity between the vehicle and the fuel tank and maximizes the function of ensuring safety against vibration or impact. The purpose is to

In order to solve the above problems, the present invention is a fixing device for a donut-shaped fuel tank forming a central space, including a front body portion 110 surrounding the front upper side of the fuel tank; A rear body portion 120 surrounding the rear upper side of the fuel tank; A front mounting portion 210 extending to the outside of the front body portion and fastened to the trunk side; A rear mounting portion 220 extending outside the rear body portion and fastened to the trunk side; A fuel tank fixing device including a connecting portion 300 that connects the front body portion and the rear body portion to each other and penetrates the tank bottom formed in the central space and is connected to the trunk base.

The connection part includes an upper plate portion 310 covering the central space of the fuel tank, a plurality of leg portions 320 connecting the upper plate and the front body portion and the rear body portion, and a protrusion 330 protruding downward from the upper plate portion. It can be provided.

In addition, the protrusion is inserted into the inner circumference from the upper side and an elastic member 420 is supported on the lower side of the tank bottom.

According to one embodiment, the protrusion may function as a stopper to prevent the fuel tank from being separated back and forth or left and right due to external shock.

The elastic member functions to push the tank bottom in the direction of the trunk base.

In addition, it may further include a vibration isolation member 410 interposed between the bottom surface of the front body portion and the rear body portion and the upper surface of the fuel tank.

The vibration isolation member primarily cushions the force applied from the bottom of the front body portion and the rear body portion to the top of the fuel tank, but the elastic member cushions the force and can simultaneously push the fuel tank downward and distribute the load.

Meanwhile, the present invention is a fixing device for a donut-shaped fuel tank forming a central space, including a front body portion 110 surrounding the front upper side of the fuel tank; A rear body portion 120 surrounding the rear upper side of the fuel tank; A front mounting portion 210 extending to the outside of the front body portion and fastened to the trunk side; A rear mounting portion 220 extending outside the rear body portion and fastened to the trunk side; An upper plate portion 310 covering the central space, a plurality of leg portions 320 connecting the upper plate and the front body portion and the rear body portion, and a protrusion that protrudes downward from the upper plate portion and prevents the fuel tank from moving forward, backward, or left and right. A fuel tank fixing device including a connection portion 300 provided (330) is provided.

In addition, the protrusion is inserted into the inner circumference from the upper side and an elastic member 420 is supported on the lower side of the tank bottom.

It is preferable to further include an adapter part 430 disposed on the upper side of the tank bottom and inserted into the lower inner periphery of the elastic member, and a fastening member 440 that penetrates the adapter part and the tank bottom and is connected to the trunk base.

Additionally, a step portion 321 may be formed in the leg portion to place the upper plate portion further downward.

The front mounting portion and the rear mounting portion may have a reinforcement portion 202 bent to dispose the front body portion and the rear body portion further downward.

By the configuration of the present invention described above, the one-point fixation method adopted in the prior art is improved, and the fuel tank is secured through the relationship of support at four parts on the trunk side and support at one point elastically fixed at the center side. It is capable of providing accurate and solid support while also being able to respond flexibly to accident situations, which has the effect of preventing the problem of fuel tank displacement and damage to property and life due to damage to the fuel tank.

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

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

Hereinafter, a donut-shaped fuel tank fixing device with a load distribution function according to a preferred embodiment of the present invention will be described in detail with reference to the attached 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 another part or device in between. Additionally, when a part is said to 'include' a certain component, this does not mean that other components are excluded, but that it can further include other components, unless specifically stated to the contrary.

The present invention is basically a fixing device for fixing a fuel tank disposed in the trunk of a car, comprising a body portion disposed in a form that surrounds a portion of the upper side of the fuel tank, and a body portion extending outward from the body portion to the trunk side side. It is composed of one or more mounting parts fastened to and an elastic member disposed on the inner circumference of the central space of the fuel tank, one end of which is supported by the connection part of the body part, and the other end of which is 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 is explained as the main example of the part where the spare tire of the rear trunk is placed. However, the trunk must be not only the rear trunk of a passenger car, but also a trunk located at 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 where fuel tanks can be placed, such as spaces.

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

In the descriptions of the present invention, the side of the trunk where 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.

Figure 2 is a plan view of a donut-shaped fuel tank fixing device with a load distribution function of the present invention.

The fixed body 100, which functions as a frame to support the overall structure of the fuel tank, is made to correspond to the shape of a donut-shaped fuel tank, and includes the upper surface 111 and the side portion (111) of the body part constituting the fixed body 100. 112) surrounds the upper side of the fuel tank. In one embodiment, the body portion may have a plate-shaped upper surface portion 111 facing the upper plate of the fuel tank and a rounded side portion 112 to correspond to a portion running down the side of the fuel tank.

For example, the body part may be considered to be formed in the form of a ring surrounding the outside of the fuel tank when viewed from above.

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

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

Since the area where the front mounting unit 210 is placed based on the illustrated state is oriented toward the front of the vehicle, the direction is defined as forward for explanation.

In the illustrated example, the rear body portion 120 is formed to have a shorter circumferential length than the front body portion 110, but this varies depending on the shape and type of the fuel tank disposed in the trunk of the car.

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

A connecting portion 300 is disposed to connect the front body portion 110 and the rear body portion 120 to each other on the inner circumference side. This connection part 300 has a predetermined connection structure to the trunk base. In order to transmit and cushion the force applied upward and downward, there is a predetermined elastic member between the trunk base and the connection part 300 that provides downward elastic force or is capable of deformation. may be involved. Examples related to this will be described later.

The front body portion 110 may include a pair of front mounting portions 210 for fastening to the trunk side, and the rear body portion 120 may also include a pair of rear mounting portions 220 for fastening to the trunk side. ) can be configured. Each of the mounting portions may be provided with a mounting hole for penetration of a fastening member.

The direction of the front mounting portion 210 and the rear mounting portion 220 may be determined depending on the location of the trunk, more precisely, the shape of the trunk side. In the illustrated embodiment, the front mounting part 210 extends radially of the front body part 110, and the rear mounting part 220 extends in the left and right directions in consideration of spatial limitations in the front and rear directions. Considering the impact from the rear, the front mounting part 210 can distribute force diagonally in the longitudinal direction of the vehicle, and the rear mounting part 220 can maintain a fixing force on the side, so this directionality improves safety. can be effective.

The front body portion 110, rear body portion 120, front mounting portion 210, and rear mounting portion 220 can be coupled to each other by bending, cutting, and welding plate-shaped members, and are referred to as 'car It can be formed to a thickness of 3.2T or more to satisfy the collision performance of the ‘Regulations on Safety of Pressure-Resistant Containers’.

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

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

Figure 3 is an exploded perspective view of a donut-shaped fuel tank fixing device with a load distribution function of the present invention.

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

Support at the additional center point is achieved by a member for connecting the trunk base and the fixed body 100, mainly the connection part 300 connecting the front body 110 and the rear body 120. An elastic member 420 is interposed to connect the bottom of the and the trunk base.

The elastic member 420 is connected to the fixing body 100 on the upper side and with the bottom of the fuel tank and the trunk base on the lower side, and is provided on the lower side of the connecting portion 300 for support of the elastic member 420. The stone part is made up.

Additionally, 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 part 430 may be added to connect the fastening member 440 and the elastic member 420, and the adapter part 430 may be inserted into the lower inner periphery 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. Embodiments related to the connection relationship of these elastic members 420 will be described later.

Meanwhile, the bottom of the front body 110 and the rear body 120 may be in contact with the upper part of the fuel tank 12, and when shock and vibration occur during vehicle operation, undesirable friction between metals may occur. There is a possibility. In order to cushion this, it is preferable that a vibration isolation member 410 is interposed between the bottom of the body and the top of the fuel tank. The material of the vibration isolation member 410 is not limited, and various materials such as synthetic resin, sponge, rubber, and paper may be applied.

Figure 4 is a side cross-sectional view for explaining the combined state of a donut-shaped fuel tank fixing device with a load distribution function according to an additional embodiment of the present invention, and Figure 5 is a plan view thereof.

In the above-described embodiment, one leg portion 320 is connected to the front and rear of the connection portion 300 to connect the front body portion 110 and the rear body portion 120. The number and arrangement of the leg portions 320 are optional, and in the following embodiments, a form in which a pair of leg portions 320 are radially connected before and after the connecting portion 300 will be described.

The illustration in FIG. 4 shows a state in which it is cut across the front and rear of the width direction center, and for convenience, the front portion is rotated to the right.

As described above, the connection portion 300 is disposed between the front body portion 110 and the rear body portion 120, and the connection portion 300 includes a plate-shaped upper plate portion 310 formed at the center, and the upper plate portion 310. ) and leg parts 320 connecting the inner circumference of each body part.

As described above, the fuel tank 12 is formed in an overall ring shape and has an accommodating space for storing fuel therein, and a central space 30 is formed at the center side so that it can be coupled to the trunk base.

The upper part 310 may be arranged to cover the upper part of the central space 30, and the upper part 310 is disposed lower than the leg part 320 so as to correspond morphologically to the fuel tank 12. It is desirable to be Accordingly, a step portion 321 is formed in the 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. ) is achieved.

A protrusion 330 protruding downward is formed on the lower side of the upper plate 310, and the protrusion 330 is inserted into the upper inner periphery of the elastic member 420 to fix the position of the elastic member 420. . Additionally, the protrusion 330 may function as a stopper that can prevent the fuel tank from moving forward, 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 on the center side of the tank bottom 31. When the adapter part 430 is seated on the upper surface of the tank bottom 31, the adapter part 430 And the fastening member 440 may be inserted through the tank bottom 31.

The lower side of the fastening member 440 may be fastened, for example, by screwing into a predetermined groove or hole formed in the trunk base, and in some cases, it may be formed in the form of a pin to perform a guide function to allow up and down movement. It could 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 a fastening member 440.

As shown, there is a predetermined separation distance between the lower end of the protrusion 330 and the upper end of the adapter part 430. Contraction of the elastic member 420 is possible at the above-mentioned distance, and the load directly received from the fuel tank 12 is reduced through the relationship between the method in which the fixed body 100 surrounds and supports the fuel tank 12 and the elastic member 420. can be distributed.

In other words, the elastic member 420 transmits force from the top to the tank bottom 31 of the fuel tank 12 and performs the function of pushing it downward toward the trunk base, thus buffering the directly applied load. At the same time, it allows maintaining 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 downward position movement or deformation occurs, fuel is discharged from the bottom of the front body 110 and the rear body 120. A force may be applied directly to the top of the tank 12. The above-mentioned vibration isolation member 410 can perform a primary buffering function, but when deformed due to an accident, there is a limit to the buffering ability and there are consequences such as deformation of the fuel tank 12, occurrence of cracks, or displacement of the fuel tank 12. It can happen. At this time, the elastic member 420 can perform the function of preventing this. The elastic member 420 buffers the load applied from the fixed body 100 and simultaneously pushes the fuel tank 12 toward the trunk base, causing its deformation. It is possible to allow some clearance and at the same time distribute the load downward.

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

As described above, since the present invention fixes and cushions the fuel tank 12 at five support points through the fixing body 100 rather than directly fastening it to the trunk, the fuel tank 12 may be deformed, displaced, or damaged. This can eliminate concerns such as:

In addition, the fixed body 100 must be designed to have a thickness that satisfies legal safety requirements as a whole, and in particular, stress is likely to be the greatest between the body parts and the mounting parts connected to the trunk side. In consideration of this, the thickness of the connected portion of the front mounting portion 210 and the rear mounting portion 220, the front body portion 110, and the rear body portion 120 is larger than other portions, and the reinforcement portion 202 has a bent shape. ) is preferably formed.

In a preferred embodiment, the mounting portion may have a downward bent shape so that the portion connected to each body portion is formed lower than the portion connected to the trunk side of the mounting portion, and a reinforcement portion 202 may be formed in the bent portion. there is. The bent portion may have a rounded shape considering the distribution of load.

When following the above-described embodiment, the portion of the mounting portion where the mounting hole 201 is disposed is disposed at the highest position, and the upper surface portion 111 of the front body portion 110 and the rear body portion 120 is at a lower height. It can be confirmed that the upper plate portion 310 of the connection portion 300 is disposed lower than that due to the step portion 321 of the leg portion 320. By adopting this shape, it is possible to optimize support for the shape of the donut-shaped fuel tank 12, and when shock or vibration occurs, it can be effectively distributed up and down and laterally to respond flexibly.

In addition, the mounting hole 201 is formed in the form of a predetermined through hole that can be fastened to the trunk side 50, and can be formed long in the longitudinal direction of the mounting part. A mounting bolt 203 provides fastening force between the mounting hole 201 and the trunk side. By adopting this type of mounting hole 201, it is possible to respond flexibly during construction depending on the shape of the trunk side 50 and the location of the fastening hole, as well as the deformation of the trunk side 50 and/or the fixed body 100. It can be adapted to further maximize the protection performance of the fuel tank (12).

By the donut-shaped fuel tank fixing device with the load distribution function of the present invention described above, the one-point fixing method used in the prior art is improved, and one point is fixed through support at four parts on the trunk side and elasticity at the center side. Through the support relationship of the points, it is possible to accurately and firmly support the fuel tank and respond flexibly to accident situations, preventing the problem of fuel tank displacement and damage to property and life due to damage to the fuel tank. There is an advantage.

In addition, while meeting legal safety regulations, it is economical in manufacturing and construction and is excellent against 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 described later.

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 part 111...upper surface part
112...side part 120...rear body part
201...Mounting hole 202...Reinforcement part
203...Mounting bolt 210...Front mounting part
220...rear mounting part 300...connection part
310...top part 320...leg part
321...stepped part 330...protruded part
410...vibration isolation member 420...elastic member
430... adapter part 440... fastening member

Claims (10)

As a fixing device for a donut-shaped fuel tank forming a central space,
Front body portion 110 surrounding the front upper side of the fuel tank;
A rear body portion 120 surrounding the rear upper side of the fuel tank;
A front mounting portion 210 extending to the outside of the front body portion and fastened to the trunk side;
A rear mounting portion 220 extending outside the rear body portion and fastened to the trunk side;
A fuel tank fixing device comprising a connecting portion (300) that connects the front body portion and the rear body portion to each other and penetrates the tank bottom formed in the central space and is connected to the trunk base. According to paragraph 1,
The connection part includes an upper plate portion 310 covering the central space of the fuel tank, a plurality of leg portions 320 connecting the upper plate and the front body portion and the rear body portion, and a protrusion 330 protruding downward from the upper plate portion. Fuel tank fixing device provided. According to paragraph 2,
A fuel tank fixing device further comprising an elastic member 420, where the protrusion is inserted into the inner circumference from the upper side and the lower side is supported on the bottom of the tank. According to paragraph 3,
The protrusion,
A fuel tank fixing device that functions as a stopper to prevent the fuel tank from moving forward, backward, or left and right due to external shock. According to paragraph 3,
The elastic member is,
A fuel tank fixing device that pushes the bottom of the tank in the direction of the trunk base. According to clause 5,
It further includes a vibration isolation member 410 interposed between the bottom surface of the front body portion and the rear body portion and the upper surface of the fuel tank,
A fuel tank fixing device that primarily cushions the force applied from the bottom of the front body and the rear body to the top of the fuel tank, but the elastic member also cushions the force, pushing the fuel tank downward and distributing the load. . As a fixing device for a donut-shaped fuel tank forming a central space,
Front body portion 110 surrounding the front upper side of the fuel tank;
A rear body portion 120 surrounding the rear upper side of the fuel tank;
A front mounting portion 210 extending to the outside of the front body portion and fastened to the trunk side;
A rear mounting portion 220 extending outside the rear body portion and fastened to the trunk side;
An upper plate portion 310 covering the central space, a plurality of leg portions 320 connecting the upper plate and the front body portion and the rear body portion, and a protrusion that protrudes downward from the upper plate portion and prevents the fuel tank from moving forward, backward, or left and right. A fuel tank fixing device including a connection portion 300 having (330). In clause 7,
A fuel tank fixing device further comprising an elastic member 420, where the protrusion is inserted into the inner circumference from the upper side and the lower side is supported on the bottom of the tank. According to paragraph 3 or 8,
An adapter part 430 disposed on the upper side of the tank bottom and inserted into the lower inner periphery of the elastic member;
A fuel tank fixing device further comprising a fastening member 440 that penetrates the adapter part and the tank bottom and is connected to the trunk base. According to paragraph 3 or 8,
In the leg portion, a step portion 321 is formed to place the upper plate portion further downward,
The front mounting portion and the rear mounting portion are a fuel tank fixing device having a reinforcing portion 202 bent to dispose the front body portion and the rear body portion lower.

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