Movement restraint member for mobile tank

Abstract

The goal is to suppress the movement of the tank while minimizing the effects of vibrations from the moving object (vehicle) on the tank. [Solution] A movement suppression member 30 that suppresses the movement of a tank 10 provided on a moving body 1 relative to the moving body 1 comprises a fixing portion 31 fixed to the moving body 1, and a receiving portion 32 that extends from the fixing portion 31 and is positioned with a gap d between it and an end portion 11F which is the leading edge in the direction of movement of the tank 10 when the tank 10 moves, and which receives the end portion 11F when the tank 10 moves.

Description

Technical Field

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[0003]

[0001] The present invention relates to a movement suppression member for a tank provided in a moving body such as a vehicle, which suppresses the movement of the tank.

Background Art

[0002] A moving body such as a vehicle is provided with a tank for storing fuel (such as gaseous fuel like hydrogen, or liquid fuel like gasoline and light oil), which is an energy source for generating the driving force of the moving body. Such a tank is attached to the moving body. However, as the moving body moves, various external forces act on the tank, so there is a risk that the tank may move relative to the moving body.

[0003] Focusing on this point, for example, Patent Document 1 discloses an attachment structure for a fuel tank having a cylindrical shape. In this attachment structure, movement restricting members are provided in front of and behind the fuel tank, and the fuel tank is clamped from its front and rear, thereby restricting the movement of the fuel tank in the front-rear direction of the vehicle.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Incidentally, for example, in the event of a head-on collision, the vehicle will decelerate rapidly, causing the tank to move forward relative to the vehicle due to its inertial force. In this case, it is effective to suppress the movement of the tank by providing a movement restricting member to restrict the tank's movement in the longitudinal direction, as in the technology described in Patent Document 1. Such tanks may be mounted on various moving objects, not just vehicles. Furthermore, tanks mounted on moving objects are not limited to fuel tanks; there are various types of tanks.

[0006] On the other hand, for example, vibrations can occur in a vehicle when it is in motion, and in this case, vibrations will also occur in the tank. However, if the tank and the movement restricting member are mounted in contact, as in the technology described in Patent Document 1, the mass of the movement restricting member will be added to the mass of the tank when it vibrates, requiring measures such as reinforcing the bracket for mounting the tank to withstand the vibrations. In addition, if the tank and the movement restricting member rub against each other, both the tank and the movement restricting member will be more prone to wear.

[0007] This invention was conceived in response to these challenges, and one of its objectives is to provide a tank movement suppression member for mobile bodies that can suppress the movement of the tank while minimizing the impact of vibrations from a moving body (e.g., a vehicle) on the tank. [Means for solving the problem]

[0008] This project was undertaken to solve at least some of the above-mentioned problems and can be implemented in the following forms or applications. (1) The movement restraining member for a tank for a mobile body according to this application example is a movement restraining member that restrains the movement of a tank provided on a mobile body relative to the mobile body, comprising: a fixing portion fixed to the mobile body; and a receiving portion extending from the fixing portion and positioned with a gap between it and the end portion which becomes the leading edge in the direction of movement of the tank when the tank moves, and which receives the end portion when the tank moves.

[0009] According to this application example, when a tank attached to a moving body moves relative to the moving body (for example, when the tank moves due to the inertial force of the tank during a head-on collision with the vehicle), the receiving portion of the movement-restraining member catches the end of the moving tank that is the leading edge in the direction of movement, thereby suppressing the movement of the tank and allowing the tank to be held in place by the moving body. Furthermore, if the tank and the movement-restricting member were to be installed in contact, there is a risk that vibrations of the vehicle and tank during vehicle operation could place a large load on the bracket for mounting the tank, and that friction between the tank and the movement-restricting member could cause wear on both the tank and the movement-restricting member. However, since the receiving portion of the movement-restricting member is positioned with a gap between it and the end of the tank in the direction of movement, such risks are avoided.

[0010] (2) In this application example, the fixing portion is a leg portion that separates the receiving portion from the fixing target location of the moving body, and it is preferable that the base end of the leg portion is fixed to the moving body and the receiving portion extends from the tip of the leg portion. With this configuration, the receiving part is separated from the fixing point of the moving body, thus securing space for the receiving part in the direction of the tank's movement. As a result, even if there is some part (for example, a bracket for fixing the legs) in the direction of the tank's movement relative to the receiving part, that is, at the fixing point on the moving body side opposite to the tank from the perspective of the receiving part, the space allows the receiving part to move or deform in the direction of the tank's movement without interfering with the part, thereby preventing or suppressing the risk of damage caused by the tank contacting the receiving part.

[0011] (3) In this application example, it is preferable that the end of the tank has a convex curved surface, and the receiving portion comprises an opening into which the convex curved surface of the end can enter when the tank moves, and an annular contact portion provided on the periphery of the opening into which the convex curved surface that has entered the opening can make contact. With this configuration, as the tank moves, the convex curved surface at the end of the tank enters the opening and abuts against the annular contact portion provided on the periphery of the opening. Therefore, as the end of the tank enters the opening further, the convex curved surface is more likely to come into contact with the entire contact portion on the periphery of the opening, thus avoiding localized contact and suppressing damage to the tank caused by localized contact.

[0012] (4) In this application example, it is preferable that the contact portion is formed in a curved shape. With this configuration, when the convex curved surface at the end of the tank enters the opening and comes into contact with the annular contact portion provided on the periphery of the opening, localized contact (point contact) between the end of the tank and the contact portion on the periphery of the opening is more easily avoided, thereby suppressing damage to the tank due to localized contact.

[0013] (5) In this application example, it is preferable that a weak portion is provided in the leg portion or the receiving portion. With this configuration, when the tank attached to the moving body moves relative to the moving body and the receiving portion of the movement-restraining member receives the end of the tank, the vulnerable portion is crushed or deformed, absorbing the movement energy of the tank, thereby avoiding or suppressing damage caused by the tank contacting the receiving portion.

[0014] (6) In this application example, it is preferable that the movement-restricting member has a trapezoidal shape in side view, with the legs provided on the part corresponding to the legs of the trapezoid and the receiving part provided on the part corresponding to the top base of the trapezoid. This configuration allows for a simple and stable structure for the movement-restricting member.

[0015] (7) In this application example, it is preferable that the tank has a cylindrical portion connected to the end, the axis of the cylindrical portion is positioned along the direction of movement of the moving body, and the tank is held by the moving body by a strip-shaped fastening member. A tank with such a configuration can hold the tank on the moving body relatively easily by means of a belt-shaped fastening member. However, if the moving body decelerates rapidly due to a collision with another moving body during movement, the fastening member may come off and the tank may move relative to the moving body. By providing the present movement suppression member for a tank with such a configuration, the movement of the tank is suppressed and the tank can be held on the moving body.

Advantages of the Invention

[0016] According to the present case, it becomes possible to suppress the movement of the tank while suppressing the influence of the vibration of the moving body on the tank.

Brief Description of the Drawings

[0017] [Figure 1] It is a cross-sectional view of a movement suppression member for a tank for a moving body according to an embodiment (a cross-sectional view taken along the line B-B in FIG. 4(b)), where (a) shows the state before the movement of the tank for the moving body (normal state), and (b) shows the state after the movement of the tank for the moving body. [Figure 2] It is a schematic plan view of a vehicle (truck) which is a moving body equipped with a movement suppression member for a tank for a moving body according to an embodiment. [Figure 3] It is a partial perspective view of a tank for a moving body showing the attachment state of the tank for a moving body according to an embodiment to the moving body (vehicle). [Figure 4] It is a view showing a movement suppression member for a tank for a moving body according to an embodiment, where (a) is a side view thereof (view taken along the arrow A in FIG. 4(b)), and (b) is a front view thereof (view seen from the receiving portion side of the tip of the leg portion). [Figure 5] It is a cross-sectional view (a view corresponding to FIG. 1) showing a movement suppression member for a tank for a moving body according to a modified example, where (a) shows the state during the movement of the tank for the moving body, and (b) shows the stopped state after the movement of the tank for the moving body.

Modes for Carrying Out the Invention

[0018] Referring to the drawings, embodiments of the present case will be described. The following embodiments are merely illustrative and are not intended to exclude various modifications and applications of technologies not explicitly stated in these embodiments. Each configuration of the following embodiments can be implemented with various modifications without departing from their gist. Also, they can be selectively adopted as necessary, or appropriately combined.

[0019] Note that the mobile body according to the embodiments described below is a vehicle, specifically a truck, and more specifically, a fuel cell electric truck equipped with a fuel cell. However, the mobile body according to the present case is not limited to vehicles, and can be applied to any mobile body equipped with a tank. Also, even if it is a vehicle, it is not limited to electric trucks and can be widely applied to electric vehicles and non-electric vehicles.

[0020] The tank according to the embodiment is an H2 tank (hydrogen tank) for storing hydrogen, which is the fuel of the fuel cell. However, the tank according to the present case is not limited to the H2 tank, and can be applied not only to fuel tanks but also to other tanks mounted on the mobile body for storing fuels (such as gaseous fuels like natural gas and liquid fuels like gasoline and light oil), which are energy sources for generating the driving force of the mobile body.

[0021] Also, in FIGS. 1 to 5 for reference, it is assumed that the vehicle is on a horizontal plane, and the front of the vehicle is denoted as "FR", the rear of the vehicle as "RR", the right side in the vehicle width direction as "RH", the left side in the vehicle width direction as "LH", the vertically upward direction as "UP", and the vertically downward direction as "DW", which are indicated by arrows.

[0022] [1. Configuration] Figure 2 is a plan view showing the truck excluding the cargo bed. As shown in Figure 2, the vehicle (truck) 1 according to this embodiment has a frame 2 having a pair of left and right side rails 20L, 20R and a plurality of cross members 21 provided between these side rails 20L, 20R. A cab 3 is installed above the front of the frame 2, and below the cab 3 (below the front of the frame 2), left and right front wheels (not shown) are supported by the frame 2. Below the rear of the frame 2, left and right rear wheels 4L, 4R are supported by the frame 2.

[0023] As described above, Vehicle 1 is a fuel cell electric vehicle powered by hydrogen gas, specifically a fuel cell electric truck. Therefore, Vehicle 1 comprises a fuel cell system 5 that generates electricity through a chemical reaction between hydrogen and oxygen, a drive motor 6 that operates using the electricity generated by the fuel cell system 5 to rotate the rear wheels 4L and 4R, which are the drive wheels, and a hydrogen tank (H2 tank) 10 for storing the hydrogen used in the fuel cell system 5. Note that the connection relationships of each component are omitted in Figure 2.

[0024] The fuel cell system 5 includes a fuel cell stack 5A and a high-voltage battery 5B, etc. The fuel cell stack 5A dissociates hydrogen supplied as fuel into hydrogen ions and electrons at the fuel electrode (negative electrode), and generates electricity in the process of electrons moving to the oxygen electrode (positive electrode). The high-voltage battery 5B stores the electricity generated by the fuel cell stack 5A and supplies it to the drive motor 6.

[0025] In this embodiment, the fuel cell stack 5A is installed at the front of the vehicle between the side rails 20L and 20R, the high-voltage battery 5B is installed in the middle of the vehicle in the longitudinal direction between the side rails 20L and 20R, and the drive motor 6 is installed at the rear of the vehicle between the side rails 20L and 20R (in front of the axles of the rear wheels 4L and 4R, which are the drive wheels). In addition, a pair of hydrogen tanks 10 are provided and installed on the outer side in the vehicle width direction of each side rail 20L and 20R.

[0026] In this embodiment, the hydrogen tank 10 comprises two ends 11F, 11R on which a convex curved surface 13, such as a roughly hemispherical shape, is formed, and an intermediate part (cylindrical part) 12 connected to these ends 11F, 11R and formed in a cylindrical shape, and is formed to be elongated along the central axis CL direction of the cylindrical part 12. The hydrogen tank 10 is positioned so that the central axis CL direction is aligned with the longitudinal direction of the vehicle and is installed on a bracket 22 supported by the side rails 20L, 20R. Note that the reference numerals for the detailed parts of the components related to the hydrogen tank 10 are listed only for the hydrogen tank 10 on the right side in the vehicle width direction, and those related to the hydrogen tank 10 on the left side in the vehicle width direction are omitted.

[0027] The hydrogen tank 10 is fixed to the bracket 22 by fastening a belt (a strip-shaped fastening member) 23 fixed to the bracket 22 at multiple points spaced apart in the direction of the central axis CL of the cylindrical portion 12. As shown in Figure 3, the belt 23 comprises a belt body 24 and fastening fittings 25 and 26 that are engaged with both ends of the belt body 24. The belt body 24 is positioned with its longitudinal direction facing the vehicle width direction, and its longitudinal middle portion is engaged with a predetermined location on the bracket 22.

[0028] As shown in Figure 3, the hydrogen tank 10 is placed on the bracket 22, and the belt bodies 24 of each belt 23 are wrapped around the cylindrical portion 12, and the fastening fittings 25 and 26 are fastened with fastening members (bolts and nuts) 27 to secure it.

[0029] As shown in Figure 2, one end (front of the vehicle) of the hydrogen tank 10, which is fixed on the bracket 22, is equipped with a movement-restricting member 30 that suppresses the movement of the hydrogen tank 10 relative to the vehicle 1. The movement of the hydrogen tank 10 relative to the vehicle 1 is assumed to occur, for example, in a head-on collision with another vehicle. In other words, if vehicle 1 is in motion and collides head-on, vehicle 1 will decelerate rapidly, causing the hydrogen tank 10 to move forward due to inertia. As described above, the hydrogen tank 10 is fixed by fastening the belt 23, and the only force resisting the forward movement of the hydrogen tank 10 relative to vehicle 1 is the frictional force between the outer surface of the cylindrical portion 12, which is parallel to the direction of movement, and the inner surface of the belt 23 that is in contact with it. Therefore, it is difficult to prevent the hydrogen tank 10 from moving forward relative to vehicle 1, and it is not possible to prevent the movement of the hydrogen tank 10. For this reason, a movement suppression member 30 is equipped on the front side of the hydrogen tank 10 relative to the vehicle to suppress its movement.

[0030] The movement-restricting member 30 is formed, for example, by press-forming sheet metal, and as shown in Figures 2 and 4, it comprises a leg portion 31 as a fixing part whose base end portion 31a is fixed to a bracket 40 supported on the frame 2 of the vehicle 1, and a receiving portion 32 extending from the tip portion 31b of the leg portion 31. In this embodiment, the receiving portion 32 is formed in a substantially square shape when viewed from the front (see Figure 4(b)), with the leg portions 31 provided at each of its four corners. Also, as shown in Figures 1(a) and 4(a) and (b), the movement-restricting member 30 has a trapezoidal shape when viewed from the side, with the leg portions 31 provided at the parts corresponding to the legs of the trapezoid, and the receiving portion 32 provided at the part corresponding to the top base of the trapezoid. The length of the leg portion 31 is set so as to separate the receiving portion 32 from the vehicle side (bracket 40) by the necessary amount. Note that the manufacturing method of the movement-restricting member 30 is not limited to press-forming, and various manufacturing methods can be used.

[0031] Specifically, as shown in Figures 1(a) and 4(a) and 4(b), each leg portion 31 is formed by bending at an obtuse angle from the four corners of a flat receiving portion 32 in the same direction. The end portion (base end portion) 31a in the bending direction is again bent in the opposite direction at an obtuse angle, forming a mounting surface portion 35 parallel to the receiving portion 32. The movement-restricting member 30 is attached to the vehicle 1 by fastening this mounting surface portion 35 to the bracket 40 with fasteners such as bolts and nuts (not shown). Note that in Figures 1(a) and 4(a) and 4(b), the reference numerals for the detailed parts are indicated only for one leg portion 31.

[0032] The receiving portion 32 is formed in a flat plate shape and receives the end portion 11F of the hydrogen tank 10 on the side of the direction of movement (the end portion on the front side of the vehicle) when the hydrogen tank 10 is moved as described above. In the center of the receiving portion 32 when viewed from the front, an opening 33 is formed into which the convex curved surface 13 of the end portion 11F of the hydrogen tank 10 can enter when the hydrogen tank 10 is moved as described above. The opening 33 is formed in a circular shape when viewed from the front. Here, the opening 33 is formed as a circular hole, but the opening 33 may also be a recess (circular hole) that is lower than the surrounding surface of the receiving portion 32.

[0033] The receiving portion 32 is provided with an annular contact portion (contact surface) 34 on the periphery of the opening 33, which can come into contact with the convex curved surface 13 that enters the opening 33 as the hydrogen tank 10 moves. This annular contact portion 34 is formed in a curved shape. In this embodiment, when processing the opening 33 in the receiving portion 32, a burring process is used, and by processing the opening 33 from the front side of the receiving portion 32 (opposite the leg portion 31) with a burring process, the periphery of the opening 33 is curved toward the leg portion 31, and an annular contact portion 34 is formed in a convex curved shape on the inside of the opening 33. However, the means for forming the contact portion 34 in a curved shape are not limited to this.

[0034] Furthermore, under normal circumstances (when the hydrogen tank 10 is not moving as described above), the receiving portion 32 (especially its contact portion 34) is positioned with a gap d between it and the convex curved surface 13 of the vehicle-front end 11F, which is the leading edge of the hydrogen tank 10 in the direction of movement during the hydrogen tank 10's movement. This gap d can be set to the minimum size possible, provided that the receiving portion 32 (contact portion 34) and the convex curved surface 13 of the end 11F of the hydrogen tank 10 do not come into contact when the vehicle 1 is in motion.

[0035] The purpose of creating such a gap d is as follows: If the tank and the movement-restricting member 30 were to be installed in contact, there is a risk that the movement-restricting member 30 would be subjected to a large excessive load on the bracket 22 for mounting the hydrogen tank 10 due to the vibration of the vehicle 1 and the resulting vibration of the hydrogen tank 10 when the vehicle 1 is in motion, and that the hydrogen tank 10 and the movement-restricting member 30 would be prone to wear due to friction due to contact between them. Therefore, in order to eliminate these risks, a gap d (see Figure 1(a)) is provided between the receiving portion 32 (contact portion 34) and the convex curved surface 13 of the end portion 11F of the hydrogen tank 10.

[0036] [2. Action and Effects] Since the movement-restricting member for the mobile tank according to this embodiment is configured as described above, the following actions and effects can be obtained.

[0037] For example, if vehicle 1 is involved in a head-on collision while in motion, vehicle 1 will decelerate rapidly, causing the hydrogen tank 10 to move forward due to inertia. In particular, as in this embodiment, if the hydrogen tank 10 is fixed by fastening its cylindrical portion 12 with a belt 23, the belt 23 alone cannot prevent the hydrogen tank 10 from moving. However, the receiving portion 32 of the movement-suppressing member 30 receives the vehicle-front end portion 11F, which is the leading edge in the direction of movement of the moving hydrogen tank 10, thereby suppressing the movement of the hydrogen tank 10 and allowing the hydrogen tank 10 to be held in place by vehicle 1.

[0038] Furthermore, if the hydrogen tank 10 and the movement-restricting member 30 were to be installed in contact, there is a risk that the vibration of the vehicle 1 and the hydrogen tank 10 during vehicle operation could place a significant overload on the bracket 22 for mounting the hydrogen tank 10, or that contact between the hydrogen tank 10 and the movement-restricting member 30 could cause friction and wear. However, since the movement-restricting member 30 has a gap d between the receiving portion 32 (contact portion 34) and the convex curved surface 13 of the end portion 11F of the hydrogen tank 10, such risks are eliminated, and there is no need to reinforce the bracket 22 or improve the wear resistance of the hydrogen tank 10 or the movement-restricting member 30, thus reducing the costs associated with the hydrogen tank 10 and the movement-restricting member 30.

[0039] The movement-restricting member 30 includes an opening 33 into which the convex curved surface 13 of the end 11F of the hydrogen tank 10 can enter when the hydrogen tank 10 moves, and an annular contact portion (contact surface) 34 on the periphery of the opening 33 into which the convex curved surface 13 that has entered the opening 33 can abut. As the convex curved surface 13 of the end 11F of the hydrogen tank 10 enters the opening 33 further, the convex curved surface 13 becomes more likely to abut the entire contact portion 34 on the periphery of the opening 33. Ultimately, the convex curved surface 13 abuts the entire contact portion 34, and movement is suppressed, thus avoiding localized contact between the convex curved surface 13 and the contact portion 34. Therefore, damage to the hydrogen tank 10 due to localized contact can be suppressed.

[0040] Furthermore, as the hydrogen tank 10 moves, the convex curved surface 13 of the end 11F of the hydrogen tank 10 enters the opening 33 and approaches the vehicle side (bracket 40) more closely than the receiving portion 32. However, since the leg portion 31 is separated from the vehicle side (bracket 40) by the necessary amount relative to the receiving portion 32, the end 11F of the hydrogen tank 10 is prevented from moving without coming into contact with the vehicle side (bracket 40).

[0041] Furthermore, since the contact portion 34 is formed in a curved shape, localized contact (point contact) between the convex curved surface 13 and the contact portion 34 is easily avoided from the initial contact between the convex curved surface 13 and the contact portion 34 of the end portion 11F of the hydrogen tank 10, thereby suppressing damage to the hydrogen tank 10 due to localized contact.

[0042] Furthermore, the movement-restricting member 30 has a trapezoidal shape when viewed from the side, with leg portions 31 provided at the base of the trapezoid and receiving portions 32 at the top of the trapezoid, thus allowing the movement-restricting member to have a simple and stable structure.

[0043] [3. Others] The configuration of the above embodiment is merely an example and can be modified as appropriate without departing from the spirit of the present invention. For example, a weak point may be provided in advance on the leg portion 31 or the receiving portion 32 of the movement-restricting member 30 according to the embodiment. This weak point is intended to absorb the movement energy when the hydrogen tank 10 is moved by collapsing or deforming itself, and the weak point can be formed by partially thinning or bending the plate in advance.

[0044] For example, a weak point 50 may be formed by making the area indicated by the black circle in Figure 5(a), that is, the bent portion where the leg portion 31 and the receiving portion 32 are connected, thinner than the rest of the structure. In this case, when the hydrogen tank 10 is moved, as shown in Figure 5(b), the weak point 50 may deform or collapse to absorb the energy of the hydrogen tank 10's movement. This makes it possible to avoid or suppress damage caused by the hydrogen tank 10 coming into contact with the receiving portion 32.

[0045] Furthermore, in this embodiment, assuming a head-on collision while the vehicle 1 is moving forward, the movement-restricting member 30 is installed in front of the hydrogen tank 10 as it moves during a head-on collision. However, for example, assuming a collision while the vehicle 1 is moving backward at a relatively high speed, an additional movement-restricting member 30 may be installed behind the hydrogen tank 10 as it moves during this collision.

[0046] In any case, if the velocity in the direction of movement of a moving object suddenly decreases due to a collision or the like while it is moving, there is a risk that the hydrogen tank 10 or other tanks may move in that direction due to inertial force. By placing a movement-restricting member in the expected direction of tank movement, with a gap between it and the tank, the effects described in this embodiment can be obtained. Furthermore, the movement-restricting member may have any shape as long as it comprises a fixing portion that is fixed to the moving body, and a receiving portion that extends from the fixing portion, is positioned with a gap between it and the end that becomes the leading edge in the direction of movement of the tank, and receives the end when the tank moves. For example, the movement-restricting member may be plate-shaped overall. In this case, a part of the plate-shaped movement-restricting member becomes a fixed part, and a receiving part is formed in the other part.

[0047] [4. Addendum] The following additional information is disclosed regarding the embodiments described above. (Note 1) A movement-restricting member that restricts the movement of a tank provided on a moving body relative to the moving body, A fixing part that is fixed to the moving body, The tank comprises a receiving portion that extends from the fixed portion, is positioned with a gap between it and the end portion which becomes the leading edge in the direction of movement of the tank during the movement of the tank, and receives the end portion when the tank moves. A movement-restricting member for a tank for mobile use, characterized by the above.

[0048] (Note 2) The fixing portion is a leg portion that separates the receiving portion from the fixing target location of the moving body, The base end of the leg is fixed to the moving body, and the receiving portion extends from the tip of the leg. A movement-restricting member for a mobile tank as described in Appendix 1, characterized in that it is a mobile tank movement-restricting member.

[0049] (Note 3) The end of the tank has a convex curved surface, The receiving portion includes an opening into which the convex curved surface at the end can enter when the tank moves, and an annular contact portion provided on the periphery of the opening, into which the convex curved surface that has entered the opening can make contact. A movement-restricting member for a mobile tank as described in Appendix 1 or 2, characterized in that it is a movement-restricting member for a mobile tank as described in Appendix 1 or 2.

[0050] (Note 4) The contact portion is formed in a curved shape. A movement-restricting member for a mobile tank as described in Appendix 3, characterized in that it is a mobile tank movement-restricting member.

[0051] (Note 5) A weak point is provided in the leg portion or the receiving portion. A movement-restricting member for a mobile tank, characterized by the features described in Appendix 2, or any one of Appendix 3 to 4 that references Appendix 2.

[0052] (Note 6) The movement-restricting member has a trapezoidal shape when viewed from the side, with the legs provided on the part corresponding to the legs of the trapezoid and the receiving part provided on the part corresponding to the top base of the trapezoid. A movement-restricting member for a mobile tank, characterized by the features described in Appendix 2, or any one of Appendix 3 to 5 that references Appendix 2.

[0053] (Note 7) The tank has a cylindrical portion connected to the end, The cylindrical portion is positioned with its axis aligned with the direction of movement of the moving body and is held by the moving body by a strip-shaped fastening member. A movement-restricting member for a mobile tank, characterized by the features described in any one of appendices 1 to 6. [Explanation of Symbols]

[0054] 1. Vehicle (truck) 2 frames 3 Cab 4L,4R rear wheel 5. Fuel cell systems 5A Fuel Cell Stack 5B High Voltage Battery 6. Drive motor 10. Hydrogen tanks (H2 tanks, tanks for mobile vehicles) 11F Hydrogen Tank 10, front end of the vehicle 11R Hydrogen tank 10, rear end of the vehicle 12. Intermediate section (cylindrical section) 13 Convex curved surface 20L, 20R side rails 21 Crossmember 22 brackets 23. Belt (a strip-shaped fastening member) 24 Belt body 25,26 Fastening hardware section 27 Fastening components (bolts and nuts) 30 Movement restraining member 31 Leg (fixed part) 31a Base end of leg portion 31 31b Tip of leg portion 31 32 Receiving part 33 Opening 34 Contact area 35 Mounting surface 40 brackets 50 Vulnerable parts Front of a rear-wheel-drive vehicle RR (rear of the vehicle) RH (Right side in the vehicle width direction) LH (left side in the vehicle width direction) UP vertically upward DW Vertically downwards CL Central axis of cylindrical section 12 d gap

Claims

1. A movement-restricting member that restricts the movement of a tank provided on a moving body relative to the moving body, A fixing part that is fixed to the moving body, The tank comprises a receiving portion that extends from the fixed portion, is positioned with a gap between it and the end portion which becomes the leading edge in the direction of movement of the tank during the movement of the tank, and receives the end portion when the tank moves. A movement-restricting member for a tank for mobile use, characterized by the above.

2. The fixing portion is a leg portion that separates the receiving portion from the fixing target location of the moving body, The base end of the leg is fixed to the moving body, and the receiving portion extends from the tip of the leg. A movement-restricting member for a tank for a mobile body, as described in claim 1.

3. The end of the tank has a convex curved surface, The receiving portion includes an opening into which the convex curved surface at the end can enter when the tank moves, and an annular contact portion provided on the periphery of the opening, into which the convex curved surface that has entered the opening can make contact. A movement-restricting member for a mobile tank according to claim 1, characterized in that

4. The contact portion is formed in a curved shape. A movement-restricting member for a mobile tank according to claim 3, characterized in that

5. A weak point is provided in the leg portion or the receiving portion. A movement-restricting member for a mobile tank according to claim 2, characterized in that

6. The movement-restricting member has a trapezoidal shape when viewed from the side, with the legs provided on the part corresponding to the legs of the trapezoid and the receiving part provided on the part corresponding to the top base of the trapezoid. A movement-restricting member for a mobile tank according to claim 2, characterized in that

7. The tank has a cylindrical portion connected to the end, The cylindrical portion is positioned with its axis aligned with the direction of movement of the moving body and is held by the moving body by a strip-shaped fastening member. A movement-restricting member for a mobile tank according to claim 1, characterized in that

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