JP6323369B2 - Tank mounting structure - Google Patents

Description

  The present invention relates to a vehicle.

  A plurality of tanks are mounted side by side in the vehicle front-rear direction, and each tank is mounted such that the tank shaft is along the vehicle front-rear direction or the tank shaft is along the vehicle width direction. Since the tank mounted in this manner is subjected to an impact applied to the vehicle, various methods for dealing with the impact have been proposed (for example, Patent Document 1).

JP 2009-51296 A

  In the above-mentioned patent document, a plurality of tanks are arranged in a line so that the tank shaft is along the front-rear direction of the vehicle, and an impact force mitigating member is disposed between the tanks to mitigate the impact applied from the front-rear direction of the vehicle. ing. Even if the impact is mitigated in this way, the impact from the vehicle front-rear direction is applied to the tank from the end side of the tank shaft, so that there is room for improvement as described below.

  Since the tank shaft end portion of the tank usually has a hemispherical shape called a dome portion, the portion that receives the impact is the top of the dome portion, and the area that receives the impact is small. Therefore, when a large impact is received in a small area, the tanks can move along the tank axial direction and contact between the tanks can occur. Although this situation can be solved by improving the mitigation capability by increasing the volume of the impact force mitigating member, it is necessary to mount the tank in a limited space called a vehicle, so there is a limit in avoiding tank contact. It came to be pointed out. For these reasons, there has been a demand for a shock handling method that is useful for avoiding tank contact when a plurality of tanks mounted side by side in the vehicle longitudinal direction are subjected to an impact from the end of the tank shaft.

  In order to solve at least a part of the problems described above, the present invention can be implemented as the following forms.

  (1) According to one aspect of the present invention, a tank mounting structure in a vehicle is provided. The tank mounting structure holds the second tank mounted side by side with the first tank in the vehicle so that the tank shaft is along the vehicle front-rear direction and the tank portion at one end of the tank shaft is directed toward the first tank. And when the load in the direction from the other end side tank part of the tank shaft toward the one end side tank part is applied to the second tank exceeding a predetermined size, the one end side tank part is A release mechanism for releasing the holding by the holding mechanism before contacting the first tank;

  In mounting the first tank and the second tank, the vehicle of the above aspect is configured so that the tank axis is along the vehicle front-rear direction and one tank side portion of the tank axis is directed to the first tank. Therefore, the first tank and the second tank are mounted side by side in the vehicle longitudinal direction. When the load in the direction from the other end side tank part toward the one end side tank part exceeds the predetermined magnitude and is applied to the second tank along the vehicle front-rear direction, Since the holding is released before the contact with one tank, the loaded second tank is dropped from the vehicle body. Therefore, according to the vehicle of the above aspect, the load in the direction from the other end side tank part to the one end side tank part is applied to the second tank among the mounted first tank and second tank exceeding a predetermined magnitude. However, contact between the first tank and the second tank can be avoided, and tank damage due to contact between the tanks can be suppressed.

  Note that the present invention can be realized in various forms, and can be applied to, for example, a form as a vehicle equipped with a tank, a method for installing a tank in a vehicle, and the like.

It is explanatory drawing which shows roughly the mode of tank mounting in the vehicle 10 which concerns on embodiment by a planar view and a side view. It is explanatory drawing which shows roughly the mode of mounting of the 1st tank 30F and the 2nd tank 30R. It is explanatory drawing which decomposes | disassembles and shows the mounting mechanism 40 used for mounting of the 2nd tank 30R. FIG. 4 is an explanatory diagram showing an enlarged configuration of a main part of the mounting mechanism 40. It is explanatory drawing which shows the relationship of each structural member at the time of tank mounting by the mounting mechanism 40 by an enlarged view or a perspective view. FIG. 6 is an explanatory view showing a state of tank mounting by the mounting mechanism 40 in association with the vehicle body 20. It is explanatory drawing which shows transition of engagement with the engaging pin 43 and the pin engaging recessed part 51h when the external force Fs accompanying an impact is added from the vehicle rear side. It is explanatory drawing which shows the behavior of 2nd tank 30R when the external force Fs accompanying an impact is added from the vehicle rear side. It is explanatory drawing which decomposes | disassembles and shows the mounting mechanism 40A of other embodiment. It is explanatory drawing which shows the mode of the tank mounting by the mounting mechanism 40B of embodiment which receives the 2nd tank 30R in the underbody 20b.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory view schematically showing a state of tank mounting in a vehicle 10 according to the embodiment in a plan view and a side view. As shown in the figure, the vehicle 10 has two tanks, a first tank 30F on the front side of the vehicle and a second tank 30R on the rear side of the vehicle, arranged side by side in the vehicle front-rear direction and mounted horizontally on the vehicle body 20, and The first tank 30F is mounted so that the tank axis is along the vehicle width direction. About the 2nd tank 30R mounted in the rear-wheel RW side along with the 1st tank 30F, this is mounted so that a tank axis may follow a vehicle front-back direction. Accordingly, the second tank 30R is mounted on the vehicle body 20 so as to extend so that the front end side tank portion 30Rf faces the body peripheral wall of the first tank 30F and the rear end side tank portion 30Rb is located on the vehicle rear side. Hereinafter, the mounting of both tanks is referred to as a T-shaped mounting layout.

  FIG. 2 is an explanatory view schematically showing how the first tank 30F and the second tank 30R are mounted. As shown in the drawing, the first tank 30F is sandwiched between two pairs of the upper peripheral wall gripping band 31 and the lower peripheral wall gripping band 32, and is supported by fastening each band to the fixed plate 33 at both ends of the band. Then, by fixing the fixing plate 33 to the vehicle body 20, more specifically to the lower surface of the underbody of the vehicle body 20, the first tank 30F is placed horizontally so that the tank axis is along the vehicle width direction as shown in FIG. Installed. Note that the mounting mechanism (plate fastening structure) in the first tank 30F is not directly related to the gist of the present invention, and is omitted in FIG. The mounting mechanism 40 for the second tank 30R is not shown in FIG. 2, and will be described in detail later.

  The second tank 30R is mounted by two mounting mechanisms 40 so that the front end side tank portion 30Rf faces the peripheral wall of the first tank 30F. FIG. 3 is an explanatory view showing the mounting mechanism 40 used for mounting the second tank 30R in an exploded manner, FIG. 4 is an explanatory view showing an enlarged configuration of a main part of the mounting mechanism 40, and FIG. 5 is a mounting mechanism. FIG. 6 is an explanatory view showing the relationship of each component when the tank is mounted by 40 in an enlarged view or a perspective view. FIG. 6 is an explanatory view showing the state of tank mounting by the mounting mechanism 40 in association with the vehicle body 20.

  As shown in FIG. 3, the mounting mechanism 40 includes a tank support band 42, a holding and fixing bracket 44, a tank seat band 46, a band engaging mechanism 50, and a tank release band 60. The tank support band 42 is made strong by bending and using a steel mold, and receives the second tank 30R at the tank lower peripheral wall. And the tank support band 42 clamps the 2nd tank 30R over the up-and-down peripheral wall with the tank seat band 46 by the band engaging mechanism 50 mentioned later. Further, the tank support band 42 has an engagement pin 43 at the band end portion 42e, and this engagement pin 43 extends toward the outside of the tank of the received second tank 30R.

  The holding and fixing bracket 44 has high strength by using a steel plate, and includes a pin engagement frame 51 that constitutes a band engagement mechanism 50 described later on a bracket end surface on the tank side. As shown in the enlarged view of FIG. 3 and FIGS. 4 and 5, the pin engagement frame body 51 has a frame shape in which one side is opened, and a pin engagement recess 51 h that receives the engagement pin 43 of the tank support band 42. The opening side of the pin engaging recess 51h is a raised opening convex portion 51t. The holding and fixing bracket 44 is interposed between the tank support band 42 and the tank seat band 46, and a second tank with respect to the vehicle body 20 by a band engaging mechanism 50 described later including a pin engaging frame 51. Involved in mounting 30R.

  The tank seat band 46 has a band end portion 46e formed of a steel mold to ensure end strength. At the band end portion 46e, an underbody of the vehicle body 20 is formed by bolts 45 and nuts as shown in FIG. It is fixed to 20b and receives the second tank 30R on the side of the tank upper peripheral wall. The tank seat band 46 is integrated with the tank support band 42 by a band engaging mechanism 50 described later, holds the second tank 30R together with the tank support band 42, and holds the second tank 30R with the vehicle body 20. Installed horizontally.

  The band engaging mechanism 50 includes a pin engaging frame 51 provided at an end of the holding and fixing bracket 44, a tank holding spring 52, a bolt 53, and a spring receiving seat 54. The tank holding spring 52 is disposed between the holding and fixing bracket 44 and the spring receiving seat 54, and is compressed through the spring receiving seat 54 by tightening a nut screwed into the lower end of the bolt 53. Therefore, the tank holding spring 52 exerts a tank holding force Fh on the holding and fixing bracket 44 toward the tank seat band 46 fixed to the vehicle body 20 (specifically, the underbody 20b). This tank holding force Fh is applied to the tank support band 42 via the engaging pin 43 (see FIGS. 4 and 5) engaged with the pin engaging recess 51h of the pin engaging frame 51 of the holding and fixing bracket 44. Moreover, the tank holding force Fh is exerted on the tank support band 42 toward the tank seat band 46 (vehicle body 20). With such a configuration, the band engagement mechanism 50 is engaged with the engagement pin 43 of the tank support band 42 and the pin engagement frame body 51 (specifically, the pin engagement recess 51h) of the holding and fixing bracket 44. Thus, the tank support band 42 and the tank seat band 46 are engaged, and the second tank 30R is held with respect to the vehicle body 20. The band engaging mechanism 50 holds the mounting posture of the second tank 30R by applying a tank holding force Fh to the tank support band 42 toward the vehicle body 20 side. The bolt 53 and the bolt 45 pass through the holding and fixing bracket 44 and fulfill a function of guiding the holding and fixing bracket 44 in the vertical direction. In FIG. 5, for convenience of illustration, the tank seat band 46 and the pin engagement frame 51 are shown separated from each other. The pin engaging frame 51 is connected to the holding and fixing bracket 44 and the bolt 45.

  The tank support band 42 always receives the mass of the second tank 30 </ b> R, but the tank holding force Fh reaches the vehicle body 20 side, and the engagement pin 43 is a pin engagement recess of the pin engagement frame 51. The engagement pin 43 is not disengaged from the pin engagement recess 51h during the normal traveling period of the vehicle 10 including the sudden braking operation because it is engaged with the location 51h and received by the opening convex portion 51t. That is, the magnitude of the tank holding force Fh and the projecting height of the opening convex portion 51t are assumed to be a sudden brake that is normally performed during the vehicle traveling period, and the inertial force that accompanies such a sudden brake acts as a load from the rear end side tank part 30Rb side. Even if the second tank 30R is moved toward the front side of the vehicle by being hooked on the second tank 30R toward the tip side tank portion 30Rf, the engagement pin 43 is removed from the pin engagement recess 51h and the engagement is not released. Thus, it is defined in the design stage.

  As shown in FIG. 3, the tank release band 60 is formed of a strip-shaped thin steel plate (for example, a steel steel plate), and surrounds the second tank 30R over the entire circumference thereof. The tank release band 60 is fastened to the tank by a fastening mechanism (not shown) so as to be fastened to the tank peripheral wall and integrated with the second tank 30R. The tank release band 60 is a tank receiving band in a state where the second tank 30R is mounted and held by the tank support band 42, the tank receiving band 46, the holding and fixing bracket 44, and the band engaging mechanism 50 described above. It is located on the rear end side tank part 30Rb side from the band 46 and the tank support band 42. The tank release band 60 includes a release piece 62 fixed by a bridge 62v, and projects the release piece 62 from the horizontal side wall of the second tank 30R. The release piece 62 is located between the band end portion 42e of the tank support band 42 and the pin engaging frame 51 in the mounted state of the second tank 30R, as shown in FIGS. As shown, the pin contact portion 62 s faces the engagement pin 43.

  As shown in FIG. 5, the second tank 30 </ b> R has the tank support band 42, the tank seat band 46, the holding and fixing bracket 44, and the band engaging mechanism 50 described above also on the rear end side tank portion 30 </ b> Rb side. Mounted and retained. Note that the second tank 30R may be mounted and held on the rear end side tank portion 30Rb side by the upper peripheral wall grip band 31 or the like used for mounting the first tank 30F (see FIG. 2). .

  Here, a procedure for mounting the second tank 30R on the vehicle body 20 will be briefly described. First, the tank release band 60 is mounted and fixed at a predetermined position of the second tank 30R, and the bolts 53 are loosened so that the tank holding spring 52 in the band engaging mechanism 50 extends. . Next, the second tank 30R to which the tank release band 60 is already attached is lifted to the underbody 20b (see FIG. 6) while being supported by the tank support band 42, and the engagement pin 43 is pin-engaged with the band engagement mechanism 50. The pin 51 is engaged with the pin engaging recess 51 h in the frame 51. In this state, the bolts 53 are tightened with nuts to compress the tank holding springs 52 until a predetermined tank holding force Fh is obtained. Thereby, the mounting of the second tank 30R on the vehicle body 20 is completed.

  According to the vehicle 10 of this embodiment having the tank mounting configuration described above, there are the following advantages. FIG. 7 is an explanatory view showing the transition of the engagement between the engagement pin 43 and the pin engagement recess 51h when the external force Fs accompanying the impact is applied from the rear side of the vehicle, and FIG. 8 is a diagram illustrating the external force Fs accompanying the impact. It is explanatory drawing which shows the behavior of the 2nd tank 30R at the time of adding from the vehicle rear side. In the lower part of FIG. 8, only the main part is shown in the illustration around the tank.

  As shown in FIG. 7, when the external force Fs is applied to the second tank 30R from the rear end side tank part 30Rb side, the second tank 30R applies the external force Fs to the dome having a small area on the rear end side tank part 30Rb side. Receive at the top of the club. Thus, the external force Fs exerted on the second tank 30R acts to move the second tank 30R toward the first tank 30F mounted in the T-shaped mounting layout shown in FIG. When the external force Fs exceeds the tank holding force Fh exerted on the tank support band 42 by the band engaging mechanism 50, the release piece 62 of the tank release band 60 integral with the second tank 30R is The two tanks 30R move to the first tank 30F side, and the pin abutting portion 62s pushes the engaging pin 43 beyond the opening convex portion 51t from the pin engaging recess 51h. As a result, the band engagement mechanism 50 releases the engagement between the engagement pin 43 in the tank support band 42 and the pin engagement recess 51h of the pin engagement frame body 51. Therefore, as shown in FIG. The second tank 30R that has reached is dropped from the vehicle body 20 (specifically, the underbody 20b: see FIG. 6) at least on the tip side tank portion 30Rf side. Therefore, in the vehicle 10 of the present embodiment, an impact is applied to the second tank 30R of the first tank 30F and the second tank 30R mounted in the T-shaped mounting layout shown in FIG. 1 from the rear end side tank portion 30Rb side. Even before, the holding | maintenance of 2nd tank 30R is cancelled | released before the front end side tank part 30Rf of 2nd tank 30R contacts the surrounding wall of 1st tank 30F. Therefore, according to the vehicle 10 of the present embodiment, contact between the first tank 30F and the second tank 30R can be avoided, and tank damage due to contact between the tanks can be avoided. The same applies to the case where an impact is applied to the traveling vehicle 10 from the front side of the vehicle and the second tank 30R receives a load due to the inertial force from the rear end side tank part 30Rb toward the front end side tank part 30Rf.

  In order to prevent the second tank 30R falling from the underbody 20b from reaching the traveling road surface, the second tank 30R is suspended by a wire or a band on the front end side tank portion 30Rf side and the rear end side tank portion 30Rb side. It may be possible to lower it. Such wires and bands can be folded or curved in the mounting posture of the second tank 30R described above, so there is no hindrance to tank mounting or vehicle travel.

  When the second tank 30R is mounted by being held by the mounting mechanism 40 at two locations on the front and rear sides of the vehicle, the length of the pin engagement recess 51h in the mounting mechanism 40 on the vehicle rear side is set to the vehicle front side. It may be set longer than the pin engagement recess 51h in the mounting mechanism 40. In this way, the second tank 30R can be surely dropped first on the side of the front end side tank portion 30Rf, which is beneficial for avoiding damage due to contact between the tanks.

  Next, another embodiment will be described. FIG. 9 is an explanatory view showing an exploded mounting mechanism 40A of another embodiment. The mounting mechanism 40A of this embodiment is characterized in that the tank support band 42A is mounted and fixed to the second tank 30R. As shown in the drawing, the tank support band 42A of the mounting mechanism 40A includes an engagement pin 43 as in the tank support band 42 of the embodiment described above, and includes a tank surrounding band 42Au from the pin mounting portion 42c. The tank surrounding band 42Au extends from one pin mounting portion 42c to the other pin mounting portion 42c, and is stretched over the tank upper peripheral wall of the second tank 30R. The tank support band 42A is fastened together with the tank support band 42A together with the second tank 30R together with the tank support band 42A by fastening the tank surrounding band 42Au with a fastening mechanism (not shown).

  In the vehicle 10 including the mounting mechanism 40A of this embodiment, when the external force Fs exceeding the tank holding force Fh is applied from the rear end side tank portion 30Rb to the second tank 30R, the tank support band 42A integral with the second tank 30R is provided. The engagement pin 43 moves to the first tank 30F side together with the second tank 30R, and the engagement pin 43 jumps out of the pin engagement recess 51h beyond the opening protrusion 51t. As a result, the engagement between the engagement pin 43 and the pin engagement recess 51h of the pin engagement frame 51 in the band engagement mechanism 50 is released. Therefore, also by the vehicle 10 including the mounting mechanism 40A of this embodiment, The contact between the first tank 30F and the second tank 30R mounted in the T-shaped mounting layout can be avoided, and tank damage can be avoided. Further, since it is not necessary to mount the tank of the tank release band 60, the configuration can be simplified and the cost can be reduced.

  FIG. 10 is an explanatory view showing a state of tank mounting by the mounting mechanism 40B of the embodiment that receives the second tank 30R by the underbody 20b. As shown in the figure, in the mounting mechanism 40B, a tapered recess 20c is formed in the underbody 20b, and the second tank 30R is received by the upper peripheral wall of the tank in the tapered recess 20c. The bolt 53 is fixed to the underbody 20b to guide the holding and fixing bracket 44. Even in a vehicle in which the second tank 30R is mounted by the mounting mechanism 40B, contact between tanks can be avoided as described above.

  The present invention is not limited to the above-described embodiment, and can be realized with various configurations without departing from the spirit of the present invention. For example, the technical features of the embodiments corresponding to the technical features in each embodiment described in the summary section of the invention are intended to solve part or all of the above-described problems, or part of the above-described effects. Or, in order to achieve the whole, it is possible to replace or combine as appropriate. Further, if the technical feature is not described as essential in the present specification, it can be deleted as appropriate.

  In the embodiment shown in FIG. 9, the tank support band 42A having the engagement pin 43 is integrated with the second tank 30R together with the tank surrounding band 42Au. However, the engagement pin 43 is not directly connected to the second tank 30R in terms of appearance. You may make it protrude in. In order to achieve such a tank configuration, before the formation of the winding of the fiber reinforced layer in the manufacturing process of the second tank 30R, the tank support that is curved along the tank lower peripheral wall and extends the engagement pins 43 at both ends of the band. Attach the band to the outer wall of the tank liner. Then, this tank support band may be covered with a fiber liner along with the tank liner so that the engagement pin 43 protrudes from the fiber reinforcement layer.

  In each of the above-described embodiments, the first tank 30F and the second tank 30R are mounted in the T-shaped mounting layout shown in FIG. 1, but both tanks are arranged in the vehicle front-rear direction so that the tank axis is along the vehicle front-rear direction. A layout mounted side by side may be used.

DESCRIPTION OF SYMBOLS 10 ... Vehicle 20 ... Vehicle body 20b ... Under body 30F ... 1st tank 30Rb ... Rear end side tank part 30Rf ... Front end side tank part 30R ... Second tank 31 ... Upper peripheral wall grip band 32 ... Lower peripheral wall grip band 33 ... Fixed plate 40, 40A, 40B ... mounting mechanism 42, 42A ... tank support band 42Au ... tank surrounding band 42c ... pin mounting part 42e ... band end 43 ... engagement pin 44 ... holding and fixing bracket 45 ... bolt 46 ... tank seating band 46e ... Band end portion 50 ... Band engagement mechanism 51 ... Pin engagement frame 51h ... Pin engagement recess 51t ... Opening convex portion 52 ... Spring for holding tank 53 ... Bolt 54 ... Spring seat 60 ... Band for tank release 62 ... Release piece 62s ... Pin contact part 62v ... Bridge FW ... Front wheel RW ... Rear wheel F ... tank holding force Fs ... external force

Claims (1)

A tank mounting structure in a vehicle,
A holding mechanism for holding the second tank mounted side by side with the first tank in the vehicle such that the tank shaft extends in the vehicle front-rear direction and the tank portion on one end side of the tank shaft faces the first tank;
When a load in a direction from the other end side tank part of the tank shaft toward the one end side tank part exceeds a predetermined magnitude and is applied to the second tank, the one end side tank part contacts the first tank. And a release mechanism for releasing the holding by the holding mechanism before the tank mounting structure.

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