KR20210012208A - Reinforcement structure of fuel tank for vehicle - Google Patents

Abstract

The present invention relates to a reinforcing pillar of a fuel tank for a vehicle, which is able to effectively reinforce the rigidity of the part of a fuel pump side, and to definitely protect the fuel pump and a tank part near the fuel pump from impact and deformation. To this end, according to the present invention, the reinforcing pillar of a fuel tank for a vehicle comprises: a pillar mainframe which is a tank-shaped structure completely covering the whole fuel pump in an inner space of the fuel tank; an upper bonding unit placed on an upper end unit of the pillar mainframe to be bonded and fixed to an upper plate of the fuel tank; and a lower bonding unit placed on a lower end unit of the pillar mainframe to be bonded and fixed to a lower plate of the fuel tank. The pillar mainframe includes a plurality of penetrating holes for allowing fuel to be moved, introduced, and discharged between the outer space and the inner space.

Description

Reinforcement structure of fuel tank for vehicle

The present invention relates to a fuel tank reinforcement pillar for automobiles, and more particularly, to a fuel tank reinforcement pillar for automobiles that can prevent deformation of the fuel tank and prevent damage and leakage of the fuel tank due to a collision accident. About.

In general, when the engine is driven by a gasoline vehicle, if the engine negative pressure acts inside the fuel tank through the canister, the boil-off gas in the fuel tank is collected by the canister, and the boil-off gas collected in the canister is sucked into the combustion chamber of the engine by the engine negative pressure As it enters and burns, it can satisfy the regulation of evaporation gas emission.

On the other hand, in the case of hybrid vehicles, when only the electric motor for driving the vehicle is operated, the engine does not operate and the engine negative pressure due to the engine operation cannot be used. Therefore, the evaporative gas collected in the canister cannot be removed and sucked into the engine. .

As a result, in the hybrid vehicle, there is a disadvantage in that a large amount of the boil-off gas is collected in the canister because the desorption of the boil-off gas is not performed when driving with only the electric motor.

In consideration of these shortcomings, in hybrid vehicles, a sealed fuel tank capable of sealingly storing boil-off gas generated from an internal fuel and a system thereof is indispensably used to satisfy laws and regulations.

For example, a fuel tank is made of a plastic material in a sealed structure, and an electronic solenoid for generating positive pressure is installed.

However, if the internal pressure of the fuel tank increases due to an increase in outside air temperature, there is a problem that the plastic fuel tank may be deformed. Accordingly, a separate rigid reinforcing member is installed inside the plastic fuel tank to prevent deformation of the fuel tank. have.

1 shows an example of a rigid reinforcing member installed in a fuel tank, and illustrates a state in which a reinforcing column 20 is installed between the upper plate 11 and the lower plate 12 of the fuel tank 10.

As shown, the upper and lower surfaces of the reinforcing pillar 20 may be integrally fused to the upper plate 11 and the lower plate 12 of the fuel tank 10 by a method such as thermal fusion to install the reinforcing pillar.

Considering that the reinforcing pillar 20 has to be manufactured in a structure capable of inducing fracture in order to absorb shock in the event of a vehicle collision according to safety regulations, a concave fracture inducing part 22 is formed in the middle of the reinforcing pillar 20.

Therefore, when a large impact such as in a vehicle collision accident is applied to the fuel tank 10 made of plastic, the fuel tank 10 is deformed to absorb the impact and at the same time, the fracture induction part 22 of the reinforcing column 20 is damaged. It plays a role of absorbing.

However, if the stiffness of the reinforcing pillar 20 is greater than necessary, even if a large impact is applied to the fuel tank 10 made of plastic, the breaking guide portion 22 is not broken, and the top plate 11 of the fuel tank 10 and the The fused portion between the upper surfaces of the reinforcing pillar 20 or the fusion portion between the lower plate 12 of the fuel tank 10 and the lower surface of the reinforcing pillar 20 may be ruptured (torn), and the fuel inside the fuel tank may leak.

On the other hand, when the stiffness of the reinforcing pillar 20 is too weak, there is a problem in that the rupture induction part 22 is easily damaged only by the negative pressure acting in the fuel tank 10 and the fuel tank 10 is excessively deformed.

In addition, the fuel pump side part located in the central part of the fuel tank is generally vulnerable to deformation, so it is necessary to install a reinforcing column around the fuel pump (pump module) to protect it, but the fuel level sensor in the fuel tank, that is, the fuel sender. There is a limitation in installing reinforcing columns for the installation of the sender's plotter.

In particular, in order to avoid interference with the plotter and to secure a space in which the plotter can operate, a plurality of reinforcing columns may be arranged around the fuel pump, but in this case, the fuel tank is located in a spaced space where no reinforcing columns are installed. There is a problem of becoming vulnerable to the transformation of

Accordingly, the present invention has been created to solve the above problems, and is installed so as to be disposed around the fuel pump inside the fuel tank, so that sufficient rigidity can be maintained at the fuel pump side even when pressure changes in the fuel tank such as positive pressure and negative pressure. In addition, it is an object of the present invention to provide a fuel tank reinforcement column for a vehicle capable of reliably protecting all portions of a fuel pump-side tank including a fuel pump from impact and deformation.

In addition, the present invention is installed around the fuel pump to reinforce the fuel pump and the tank on the fuel pump side, while avoiding interference with the plotter and securing a space for the plotter to operate. It is an object of the present invention to provide a reinforcing pillar for a fuel tank for automobiles that can be eliminated.

In order to achieve the above object, according to an embodiment of the present invention, the column body is installed as a cylindrical structure completely surrounding the entire fuel pump in the internal space of the fuel tank; An upper joint provided at an upper end of the column body and fixed in a state joined to an upper plate of the fuel tank; And a lower joint provided at the lower end of the column body and fixed to the lower plate of the fuel tank, wherein the column body includes a plurality of through-holes for allowing the movement and entry of fuel between the external space and the internal space. It provides a fuel tank reinforcement pillar for a vehicle, characterized in that formed.

Here, the column body may be installed in a cylindrical structure that completely surrounds the entire fuel pump in a circle.

In addition, it is preferable that fusion protrusions for improving thermal bonding strength are formed on the bonding surface bonded to the upper plate of the fuel tank at the upper bonding portion and the bonding surface bonded to the lower plate of the fuel tank at the lower bonding portion.

In addition, the cross-sectional area of the pillars at the upper and lower ends taken along the circumferential direction of the pillar body, and other parts of the pillar body including the middle portion, so that fracture due to stress concentration during impact can be induced at the upper and lower ends of the pillar body. It is desirable to have a reduced shape compared to.

Here, the gap between the through-holes arranged along the circumferential direction at the upper and lower ends of the column body may be made smaller than that of other parts of the column body including the intermediate portion.

In addition, it is possible to increase the number of through-holes arranged along the circumferential direction compared to other portions of the column body including the intermediate portion at the upper and lower ends of the column body.

In addition, it is possible to form smaller diameters of the through holes at the upper and lower ends of the pillar body compared to other portions of the pillar body including the intermediate portion.

In addition, it is preferable that a mounting part is formed on the outer circumferential surface of the column body, and a fuel level sensor is mounted on the mounting part of the column body, so that the fuel level sensor is integrally mounted on the column body.

In addition, the mounting portion is formed with a guide groove into which the protrusion of the sensor housing, to which the substrate of the fuel level sensor is coupled, can be inserted, so that the protrusion of the sensor housing is inserted into the guide groove of the mounting unit. It is desirable that the bonding between them is made.

In addition, the mounting portion is formed with a hook portion to be hooked of the sensor housing to which the substrate of the fuel level sensor is coupled, and the mounting portion and the sensor in a state in which the hook of the sensor housing is hung upward on the hook portion of the mounting portion. It is preferable that the coupling between the housings is made.

In addition, an elastic part is provided at the lower end of the sensor housing to allow the sensor housing to be elastically supported by the mounting part by being positioned between the mounting part, and the elastic restoring force of the elastic part is applied to the mounting part so that the locking state between the hook and the locking protrusion is maintained. It may be configured to act as a force pushing the combined sensor housing upward.

In addition, the column body may be configured by combining a plurality of column blocks arranged to surround the fuel pump.

Accordingly, according to the fuel tank reinforcement column for a vehicle according to the present invention, it is installed so as to be disposed around the fuel pump inside the fuel tank, so that sufficient rigidity can be maintained at the fuel pump side part even with pressure changes in the fuel tank such as positive pressure and negative pressure, It is possible to reliably protect all tank parts on the fuel pump side including the fuel pump from impact and deformation.

In addition, the present invention is installed around the fuel pump to reinforce the fuel pump and the tank on the fuel pump side, while avoiding interference with the plotter and securing a space for the plotter to operate. Can be resolved.

1 is a view illustrating a state in which a conventional reinforcing pillar is installed in a fuel tank.
2 is a cross-sectional view of a fuel tank reinforcement pillar for a vehicle according to an embodiment of the present invention installed in the fuel tank.
3 is a cross-sectional view taken along the line'A-A' of FIG. 2.
4 is a perspective view showing a fuel tank reinforcement pillar for a vehicle according to an embodiment of the present invention.
5 is a front view showing a fuel tank reinforcement pillar for a vehicle according to an embodiment of the present invention.
6 is a view schematically showing a cross-sectional structure of a pump-side reinforcing column taken along lines'BB'and'C-C' of FIG. 5.
7 and 8 are perspective views showing a column block constituting the column body of the pump-side reinforcing column in the embodiment of the present invention.
9 is an assembly perspective view showing a pump-side reinforcing column configured by assembly of a column block in an embodiment of the present invention.
10 is an exploded perspective view showing a mounting portion formed on a pillar block of a pillar body and a fuel level sensor (fuel sender) mounted thereto in an embodiment of the present invention.
11 is a front view of a state in which a fuel level sensor is coupled to a mounting portion of a column block in an embodiment of the present invention.
12 is a perspective view showing a fastening structure between a mounting portion of a column block and a fuel level sensor in an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art may easily implement the present invention. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms.

When a part of the specification "includes" a certain component, it means that other components may be further included rather than excluding other components unless otherwise stated.

The present invention relates to a reinforcing pillar for a fuel tank for automobiles, and can be applied to a sealed fuel tank as a fuel tank for automobiles.

The fuel tank reinforcement column according to the present invention is a main feature in that it is configured to have a cylindrical column structure that completely surrounds the entire fuel pump in a circular shape in the internal space of the fuel tank.

In the following description, the fuel pump may be in the form of a module having a known configuration, that is, a known fuel pump module installed in a fuel tank.

FIG. 2 is a cross-sectional view of a fuel tank reinforcing column for a vehicle according to an exemplary embodiment of the present invention installed in the fuel tank, and FIG. 3 is a cross-sectional view taken along line'A-A' of FIG. 2.

4 is a perspective view showing a pump-side reinforcing pillar as a fuel tank reinforcing pillar for a vehicle according to an embodiment of the present invention, and FIG. 5 is a front view showing a pump-side reinforcing pillar according to an embodiment of the present invention.

In addition, FIG. 6 schematically shows the cross-sectional structure of the pump-side reinforcing column taken along the line'BB' and the line'C-C' of FIG. 5, and the size and column of through-holes for each position in the pump-side reinforcing column This is a cross-sectional comparison.

Referring to the embodiment, a fuel pump (pump module) 13 is installed in the fuel tank 10 to suck and pump the fuel inside the fuel tank 10 at a substantially central position in the internal space.

In addition, a separate reinforcing pillar 20 may be installed to be disposed at a distance relatively far from the fuel pump 13 in the internal space of the fuel tank 10.

The reinforcing pillar 20 is installed to interconnect and support the upper plate 11 and the lower plate 12 of the fuel tank 10, and preferably, a plurality of reinforcing pillars 20 in the inner space of the fuel tank 10 ) Can be installed.

Such a plurality of reinforcing pillars 20 are not intended to directly protect the fuel pump 13 and the fuel pump-side tank portion, but between the upper plate 11 and the lower plate 12 of the fuel tank 10 ( These are reinforcing columns installed for the purpose of reinforcing and protecting the tank portions of the upper plate 11 and the lower plate 12 while interconnecting and supporting the 11) and the lower plate 12.

In the present invention, the plurality of reinforcing pillars 20 may be those having the same configuration as the known reinforcing pillars installed in the inner space of the fuel tank 10 in the prior art.

On the other hand, the fuel tank reinforcement pillar according to an embodiment of the present invention is a new structure and shape that can be installed in addition to the above reinforcement pillars, and completely surrounds the entire fuel pump 13 in a circular shape, as described above. It may be a reinforcing pillar 30.

In the following description, a reinforcing column according to an embodiment of the present invention, that is, a reinforcing column 30 installed to surround the entire fuel pump 13 will be referred to as a pump-side reinforcing column 30.

The pump-side reinforcing pillar 30 reinforces the fuel pump side portion so that the fuel pump 13 and the tank portion around the fuel pump 13 can be protected from impact and deformation in the inner space of the fuel tank 10. It is installed for the purpose.

The pump-side reinforcing column 30 also interconnects the upper plate 11 and the lower plate 12 of the fuel tank 10 and supports tank portions such as the upper plate 11 and the lower plate 12 from impact and deformation. It is installed as a protective rigid reinforcing structure.

As can be seen in FIGS. 2 and 3, the pump-side reinforcing column 30 is installed in a cylindrical structure that completely surrounds the fuel pump 13 in the inner space of the fuel tank 10. It may be composed of a cylindrical structure surrounding the entire pump 13 in a circular shape.

In this configuration, the fuel pump 13 is located inside the pump-side reinforcing column 30, and the pump-side reinforcing column 30 surrounding the fuel pump 13 is different from the fuel pump 13 located therein. It is installed so as to be positioned at a fixed distance outward.

As described above, since the pump-side reinforcing pillar 30 is installed as a structure that completely surrounds the entire fuel pump 13, the inside and the outside of the pump-side reinforcing pillar 30 are spatially divided.

In addition, in order to fix the pump-side reinforcing pillar 30, the upper end of the pump-side reinforcing pillar 30 is provided with a joint 35 that is fixed in a state bonded to the upper plate 11 of the fuel tank 10, and the pump The lower end of the side reinforcing pillar 30 is formed with a joint 36 that is fixed to the lower plate 12 of the fuel tank 10 in a state of being joined.

In the following description, the junction 35 formed on the upper end of the pump-side reinforcing column 30 is referred to as an'upper junction', and the junction 36 formed on the lower end of the pump-side reinforcing column 30 is referred to as a'lower junction'. do.

The upper joint 35 and the lower joint 36 have joint surfaces that are joined to the upper plate 11 and the lower plate 12 of the fuel tank 10, respectively, and the upper joint 35 and the lower joint 36 Each of the bonding surfaces may be bonded to and fixed to the upper plate 11 and the lower plate 12 of the fuel tank 10 by a method such as thermal fusion.

In the embodiment of the present invention, the upper joint 35 and the lower joint 36 may be separately manufactured and coupled to and installed on the column body 31, wherein the upper joint 35 and the lower joint 36 are the fuel tank It can be made of the same material as (10).

Accordingly, the pump-side reinforcing column 30 according to the embodiment of the present invention includes a column body 31 configured in a cylindrical shape so as to be disposed while surrounding the fuel pump 13, and the upper end of the column body 31 It may be configured to include an upper junction 35 and a lower junction 36 respectively coupled to the lower end.

In a preferred embodiment, at the upper joint 35 and the lower joint 36, each joint surface joined to the upper plate 11 and the lower plate 12 of the fuel tank 10, respectively, is formed by thermal fusion with the fuel tank 10. Fusion protrusions 37 for improving the fusion strength may be formed.

In an embodiment of the present invention, not only the column body 31 but also the upper joint 35 and the lower joint 36 are manufactured to completely surround the entire fuel pump 13 in a circular shape.

And, in the embodiment of the present invention, the column body 31 may be made of a material having sufficient rigidity to prevent damage when the pressure in the fuel tank 10 is positive or negative.

For example, the column body 31 may be a plastic injection molded product and filled with virgin HDPE, or glass fiber or any other type of filler (natural or polymeric fiber), HDPE, POM, PEEK. It can be made of etc.

In addition, a plurality of through-holes 33 are formed in the column body 31, and the through-holes 33 of the column body 31 are pump-side reinforcing columns 30 that surround the entire fuel pump 13 in a circle. In, the fuel pump 13 is provided to allow fuel to enter and exit between the inside of the reinforcing pillar 30 in which the fuel pump 13 is located and the outside of the reinforcing pillar 30 that is outside, inside and outside the pillar body 31 as a boundary. It serves as a fuel transfer hole that allows fuel to move and enter between.

As a result, the pump-side reinforcing column 30 can provide the effect of a baffle for controlling the flow of fuel while surrounding the fuel pump 13 in a circular shape. When the vehicle moves rapidly, the fuel in the fuel tank 10 It prevents and attenuates excessive fluctuations, prevents the flow noise due to the fluctuation of fuel, and prevents the rapid movement of fuel in the internal space of the fuel tank 10 to ensure the stability of the fuel supply when the vehicle is turning and driving on a slope. It plays a role of improving

And, in the embodiment of the present invention, when a strong force is applied to the fuel tank 10 due to a collision or the like, the pump-side reinforcing column 30 in close contact with the upper plate 11 and the lower plate 12 of the fuel tank 10 It is preferable that the stress is concentrated at the upper and lower ends of the motor so that the breakage of the maneuver can be induced.

To this end, stress can be concentrated at the upper and lower ends of the column body 31 during impact, and at the upper and lower ends of the column body 31 for stress concentration, the cross-sectional area of the column cross-section along the circumferential direction It is desirable to make it shrink compared to other parts.

In order to reduce the cross-sectional area of the pillars at the upper and lower ends of the pillar body 31, the distance between the through-holes arranged in the circumferential direction at the upper and lower portions is made smaller than that of other portions of the pillar body 31 including the middle portion. It is possible.

In addition, it is desirable to increase the number of through-holes 33 arranged in the circumferential direction at the upper and lower portions compared to other portions such as the middle portion, and for this purpose, the upper and lower portions of the column body 31 Through holes having a smaller diameter than other parts may be formed, or a larger number of through holes 33 may be formed in the upper and lower ends of the column body 31 in the circumferential direction compared to other parts such as the middle part.

In short, in order to reduce the cross-sectional area of the pillars at the upper and lower ends so that breakage can be induced at the upper and lower ends of the pillar body 31, it is preferable to form a larger number of through holes 33 having a smaller diameter than other portions. It is possible, and it is possible to reduce the cross-sectional area of the columns of the spaced portion compared to other portions such as the middle portion by reducing the interval between the adjacent through-holes 33 along the circumferential direction.

As can be seen in the cross-sectional view of FIG. 6 taken along the line'A-A' and line'B-B' of FIG. 5, respectively, at the upper and lower ends, a large number of through holes 33 having a small diameter in the column body 31 ) Are arranged at small intervals along the circumferential direction.

On the other hand, the middle portion of the column body 31 has a much larger diameter compared to the upper portion and the lower portion, but a much smaller number of through holes 33 are sparsely arranged at very large intervals.

That is, as can be seen from the cross-sectional view of the line'A-A', the cross-sectional area of the column subjected to force at the upper and lower ends of the column body 31 is relatively further reduced by the through holes 33, and the line'B-B' As can be seen from the cross-sectional view of', the cross-sectional area of the column subjected to force in other parts, such as the middle part of the column body 31, has a relatively larger shape compared to the upper part and the lower part, and the column body through the fuel tank 10 When an impact is applied to (31), fracture may be induced due to stress concentration at the upper and lower ends of the column body 31.

On the other hand, in the embodiment of the present invention, the fuel level sensor (fuel sender) 40 is mounted on the column body 31 of the pump-side reinforcing column 30, and a mounting part to which the fuel level sensor 40 can be mounted ( 34) may be provided on the outer peripheral surface of the column body 31.

In the embodiment of the present invention, the mounting portion 34 of the column body 31 is provided so that the fuel level sensor 40 can be detachably coupled, and a plurality of mounting portions 34 on the outer circumferential surface of the column body 31 May be provided, and a fuel level sender may be mounted on one of the selected mounting units 34.

In the embodiment of the present invention, the one mounting unit 34 selected above is a modularized integral fuel level sensor 40 by combining known components such as a resistance substrate 41, a float arm 43, and a plotter 44. Can be detachably coupled to.

2, 4, and 5 show an example in which the column body 31 has a single cylindrical shape, but in contrast, in the embodiment of the present invention, the column body 31 includes a plurality of column blocks that are mutually assembled. It can be configured to include.

7 and 8 are perspective views showing a column block in an embodiment of the present invention, and FIG. 9 is an assembly perspective view showing a pump-side reinforcing column configured by assembly of a column block.

As shown, the pillar blocks 32 are arranged in a circular shape to form a cylindrical shape as a whole, but the pillar blocks 32 are integrally assembled so that they are mutually fastened and fixed to constitute one pillar body 31. have.

In this case, a mounting portion 34 to which the fuel level sensor 40 may be mounted may be formed on the outer circumferential surface of each pillar block 32.

In an embodiment of the present invention, the pillar body 31 may be composed of four pillar blocks 32, wherein the four pillar blocks 32 are divided into quarters in the circular pillar body 31 Can be divided blocks of.

In addition, each of the pillar blocks 32 is provided with a fastening portion 38 for integrally coupling the adjacent pillar blocks 32 when they are arranged in a circular shape to form a cylindrical shape.

In more detail, each pillar block 32 may be provided with a mounting portion 34 on which the fuel level sensor 40 is mounted, and a clasp 38a of the fastening portion 38 at one side of each pillar block 32 ) May be formed, and a locking projection 38b may be formed on the other side.

At this time, a clasp 38a may be formed on one side end of each column block 32, and a ring-shaped locking step 38b may be formed at the other side end of the opposite side, and two adjacent column blocks 32 are assembled together. At the time, the clasp 38a of one of the pillar blocks is fastened to the locking protrusion 38b of the other pillar block 32.

As shown in FIGS. 7 and 8, the upper and lower joints 35 and 36 may be fixedly coupled to each of the upper and lower ends of each column block 32, respectively, and as shown in FIG. 9, four columns When the block 32 is assembled, one cylindrical column body 31 may be configured.

In addition, since the column blocks 32 are all thermally fused to the upper plate 11 and the lower plate 12 of the fuel tank 10 through the upper joint 35 and the lower joint 36 to be bonded and fixed, the column block 32 ), the column blocks 32 are not separated from each other and can sufficiently maintain the coupled state even if the column blocks 32 are not separated from each other and are sufficiently coupled even if only the method of engaging the clasps 38a and the locking projections 38b is used.

Referring to FIG. 9, the clasp 38a has a shape protruding from the column block 32 and bent downward, and has a shape of a hook having a locking end 38a' formed at the lower end thereof.

In addition, the locking jaw portion 38b is formed to protrude from the column block 32 in a ring shape, and after the clasp 38a is inserted into the inner side, the locking end 38a' of the clasp can be caught so that it does not fall upward.

As described above, in the embodiment, the neighboring pillar block 32 has been described as having a fastening portion of a locking method using the clasp 38a and the locking projection 38b, but this is exemplary, and the present invention is not limited thereto, A fastening structure for assembling and coupling the column blocks 32 constituting the column body 31 of the pump-side reinforcing column 30 may be applied without limitation.

For example, one of a fastening structure such as a clip structure for coupling the pillar blocks 32, a structure using fasteners, a rivet structure, and a screw fastening structure may be adopted and applied.

10 is an exploded perspective view showing a mounting portion formed on a pillar block of the pillar body and a fuel level sensor (fuel sender) mounted thereto, and FIG. 11 is a front view of a state in which a fuel level sensor is coupled to the mounting portion of the pillar block, 12 is a perspective view showing a fastening structure between a mounting part of a column block and a fuel level sensor.

As shown, a mounting portion 34 is formed on the outer circumferential surface of the pump-side reinforcing column 30, more specifically, on the outer circumferential surface of the column block 32 constituting the column body 31 of the pump-side reinforcing column 30 Then, the sensor housing 42 to which the resistance substrate 41 of the fuel level sensor 40 is coupled is coupled to the inside of the mounting portion 34.

In FIG. 10, reference numeral 43 denotes a float arm, and an unillustrated plotter (reference numeral 44 in FIGS. 4 and 5) is installed at an end of the float arm 43. In FIG.

Further, in FIG. 10, reference numeral 41 denotes a substrate of the fuel level sensor 40, specifically a resistor substrate, and the resistor substrate 41 is inserted into the sensor housing 42 and integrally coupled.

In an embodiment of the present invention, the sensor housing 42 may be provided to be coupled to the mounting portion 34 of the column block 32, and at this time, a guide groove (reference numeral in FIG. 10) on the inside of the mounting portion 34 34a') is formed so that the protrusions (represented by reference numeral '42a' in Fig. 10) formed at both left and right side ends of the sensor housing 42 can be inserted into the guide groove 34a of the mounting portion 34. Has been.

The guide groove (34a) may be formed by forming a rib (34a') vertically long inside the left and right side ends of the mounting portion (34), the inner space of the rib (34a') is the guide groove (34a) do.

In addition, the protrusions 42a are formed to protrude at both left and right side ends of the sensor housing 42 in a shape that can be inserted into the guide groove 34a, and the protrusions 42a are both side ends of the sensor housing 42 It can be formed long along the vertical.

Accordingly, the protrusions 42a formed on the left and right side ends of the sensor housing 42 can be inserted into the guide grooves 34a formed on the left and right side ends of the mounting portion 34 to slide, and thus the sensor housing ( 42) is inserted into the mounting portion 34 from the upper side to the lower side to be coupled.

In a preferred embodiment, a hook 42b that is elastically operable above the protrusion 42a at both left and right side ends of the sensor housing 42 is formed to extend upwardly, and the hook 42b has a mounting portion 34 It is designed to be slidable along the inner side of both left and right side ends of ).

In addition, the locking ends 42b' formed on the left and right hooks 42b of the sensor housing 42 are inserted into the upper ends of the guide grooves 34a at both left and right side ends of the mounting part 34 to be caught. The jaw portion 34b is formed.

In addition, in a preferred embodiment, as shown in FIG. 11, the lower end of the sensor housing 42 is provided with an elastic portion 42c that is positioned between the mounting portion 34 to elastically support the sensor housing in the mounting portion. , The elastic restoring force of the elastic portion 42c is provided as a force for pushing the sensor housing 42 inserted into the mounting portion 34 upward.

Thus, when the sensor housing 42 is inserted into the mounting portion 34 of the column block 32 and slides from the top to the bottom, the protrusion 42a of the sensor housing 42 is the guide groove of the mounting portion 34 (34a) It is inserted inward and guided downward.

Then, when the sensor housing 42 moves downward from the mounting portion 34 as far as possible to reach the fastening position, the locking end 42b' formed on the hook 42b of the sensor housing 42 is caught by the mounting portion 34. It is inserted into the jaw part 34b and fastened.

As described above, the hook 42b located at the left and right side ends of the sensor housing 42 is elastically deformed outward in a state in which the hook 42b' is inserted into the hooking protrusion 34b. ) Of the locking end (42b') is inserted into the locking projection (34b) of the mounting portion (34) and can be maintained in a fastened state without being removed.

In addition, as shown in FIG. 11, the elastic portion 42c installed at the lower end of the sensor housing 42 in the fastened state elastically supports the sensor housing 42 in a state in contact with the lower surface inside the mounting portion 34. Is done.

Since the elastic restoring force of the elastic portion 42c acts as a force that pushes the sensor housing 42 that is inserted into the mounting portion 34 and fastened upward, the hook 42b is formed by the elastic restoring force of the elastic portion 42c. The locking end (42b') of the mounting portion (34) is in a state that strongly presses the locking projection (34b) of the mounting portion (34), so that the hook (42b) does not come off from the locking portion (34b) and maintains a firmly fastened state. do.

In this way, according to the fuel tank reinforcement column according to the present invention, the fuel level sensor 40 is integrally mounted on the outer circumferential surface, so that the entire fuel pump 13 can be surrounded without interference with the fuel level sensor 40 It becomes possible to install it.

Accordingly, the problem of the restriction on installation of the reinforcing pillar 30 due to the fuel level sensor 40 can be solved, and layout setting of the fuel level sensor and the reinforcing pillar can be easily set.

In addition, by installing a reinforcing column 30 in a cylindrical shape that completely surrounds the entire fuel pump 13 between the upper plate 11 and the lower plate 12 of the fuel tank 10, the fuel tank 10 is most resistant to deformation. The entire portion of the weak fuel pump 13 side can be more effectively concentrated and reinforced, and the installation of additional pillars can be minimized.

Further, by forming the through hole 33 in the cylindrical reinforcing column 30 surrounding the fuel pump 13, the function of inducing breakage by the through hole 33 may be implemented, and the reinforcing column 30 It is possible to use it as a baffle and a reservoir cup for controlling fuel flow in the fuel tank 10.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements made by the person skilled in the art using the basic concept of the present invention defined in the following claims It is also included in the scope of the present invention.

10: fuel tank 11: top plate
12: lower plate 13: fuel pump
20: reinforcing pillar 30: pump side reinforcing pillar
31: column body 32: column block
33: through hole 34: mounting portion
34a: guide groove 34a': rib
34b: locking projection 35: upper junction
36: lower junction 37: protrusion
38: fastening portion 38a: clasp
38a': locking end 38b: locking jaw
40: fuel level sensor 41: resistor substrate
42: housing 42a: protrusion
42b: hook 42b': locking end
42c: elastic part 43: float arm
44: plotter

Claims (12)

A column body installed in a cylindrical structure completely surrounding the entire fuel pump in the internal space of the fuel tank;
An upper joint provided at an upper end of the column body and fixed in a state joined to an upper plate of the fuel tank; And
It is provided at the lower end of the column body and includes a lower joint portion fixed in a state bonded to the lower plate of the fuel tank,
A fuel tank reinforcement column for a vehicle, characterized in that the column body has a plurality of through-holes formed between the external space and the internal space to allow fuel to move and enter.
The method according to claim 1,
The column body is a fuel tank reinforcement column for a vehicle, characterized in that installed in a cylindrical structure that completely surrounds the entire fuel pump in a circle.
The method according to claim 1,
Reinforcement of a fuel tank for automobiles, characterized in that fusion protrusions for improving thermal bonding strength are formed on the bonding surface bonded to the upper plate of the fuel tank at the upper bonding portion and the bonding surface bonded to the lower plate of the fuel tank at the lower bonding portion Pillar.
The method according to claim 1,
The cross-sectional area of the pillars at the upper and lower portions taken along the circumferential direction of the pillar body, compared to other parts of the pillar body including the middle portion, so that fracture due to stress concentration during impact can be induced at the upper and lower portions of the pillar body. Fuel tank reinforcement column for automobiles, characterized in that it has a reduced shape.
The method of claim 4,
A fuel tank reinforcement column for automobiles, characterized in that the spacing between the through-holes arranged along the circumferential direction at the upper end and the lower end of the column body is smaller than that of other parts of the column body including the intermediate part.
The method of claim 5,
A fuel tank reinforcement column for automobiles, characterized in that the number of through-holes arranged in a circumferential direction is increased in the upper and lower ends of the column body compared to other parts of the column body including the intermediate part.
The method of claim 5,
A fuel tank reinforcement column for a vehicle, characterized in that the through-holes have a smaller diameter than other parts of the column body including the intermediate portion at the upper and lower ends of the column body.
The method according to claim 1,
A fuel tank reinforcement column for automobiles, characterized in that a mounting part is formed on an outer circumferential surface of the column body, a fuel level sensor is mounted on the mounting part of the column body, and a fuel level sensor is integrally mounted on the column body.
The method of claim 8,
The mounting portion is provided with a guide groove into which a protrusion of the sensor housing, to which the substrate of the fuel level sensor is coupled, can be inserted, so that the protrusion of the sensor housing is inserted into the guide groove of the mounting portion, and the mounting portion and the sensor housing are coupled. A fuel tank reinforcement column for a vehicle, characterized in that this is made.
The method of claim 8,
The mounting portion is provided with a locking protrusion through which the hook of the sensor housing to which the substrate of the fuel level sensor is coupled is formed, and between the mounting unit and the sensor housing in a state in which the hook of the sensor housing is hung upward on the locking protrusion of the mounting unit. Vehicle fuel tank reinforcement pillar, characterized in that the coupling is made.
The method of claim 10,
The lower end of the sensor housing is provided with an elastic portion that is positioned between the mounting portion and the sensor housing to be elastically supported by the mounting portion, and the elastic restoring force of the elastic portion is coupled to the mounting portion to maintain a locking state between the hook and the locking projection. A fuel tank reinforcement column for automobiles, characterized in that it acts as a force pushing the sensor housing upward.
The method according to claim 1,
The pillar body is a fuel tank reinforcement pillar for automobiles, characterized in that the pillar body is configured by combining a plurality of pillar blocks arranged to surround the fuel pump.

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