JP2012097857A - Support structure of pressure vessel and vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To appropriately hold a pressure vessel at a normal time, while buffering external force caused by an impact, etc. received by the pressure vessel, to the pressure vessel and a bracket, thus reducing the load thereon.SOLUTION: A support structure includes the pressure vessel 10a and brackets 50, 60 for holding end parts in a longitudinal direction of the pressure vessel 10a and mounting the end parts to side members 110a, 110b. The brackets 50, 60 include mounting members 34, 44, holding members 32, 42 and external force absorbing members 55, 65, respectively.

Description

  The present invention relates to a pressure vessel support structure and a vehicle, and more particularly, to a pressure vessel support structure capable of compressing and storing a fluid, and a vehicle equipped with a pressure vessel supported and mounted using the support structure.

  In general, pressure vessels such as a high-pressure tank filled with a gas substance compressed at a high pressure at normal temperature and normal pressure such as natural gas and hydrogen gas are known. A vehicle such as a natural gas vehicle or a fuel cell vehicle is equipped with a pressure vessel in which a pressure is applied to a natural gas or hydrogen gas used as a fuel to be filled and stored. In general, pressure vessels mounted on vehicles are desired to be reduced in weight in order to improve fuel consumption. For this reason, fiber reinforced plastics such as carbon fiber reinforced plastic (CFRP) and glass fiber reinforced plastic (GFRP) are used. A pressure vessel made of (FRP) is suitably employed.

  The pressure vessel 10 illustrated in FIG. 6 includes a hollow liner 12 and a fiber reinforced resin layer (FRP layer) 14 that covers the outer peripheral portion of the liner 12. The end of the pressure vessel 10 also has at least one base part 16. The base portion 16 is configured to be connectable with a valve not shown here, and the flow of the high-pressure fluid into and out of the pressure vessel 10 can be controlled by opening and closing the valve. The liner 12 is configured, for example, by adding an elastomer to a thermoplastic resin having a high gas barrier property such as nylon resin such as 6-nylon or 6,6-nylon, or polypropylene resin, if necessary.

  In general, the fiber reinforced resin layer 14 is made of a fiber bundle (filament) made of, for example, glass fiber, carbon fiber, Kevlar fiber, etc., which is a bundle of a plurality of long and continuous thread-like fibers. A so-called prepreg fiber impregnated with a resin solution containing a resin, dried and / or semi-cured as necessary, is wound around the outer peripheral surface of the liner 12, and then the resin solution is cured. At this time, in addition to the material and / or thickness of the liner 12, for example, the thickness of the fiber or fiber bundle constituting the fiber reinforced resin layer 14 or the number of windings of the prepreg fiber is adjusted to adjust the thickness of the fiber reinforced resin layer 14 By doing so, the pressure resistance and impact resistance of the pressure vessel 10 and other design strengths can be made desired.

  When such a pressure vessel is mounted on a vehicle, for example, it has been arranged at a place where there is relatively little influence from the outside, such as an impact, such as a rear portion or a central portion of the vehicle. Depending on the shape and application of the vehicle, the pressure resistance of the pressure vessel has been improved due to the necessity of raising it, and the impact resistance has been improved accordingly. It may be desirable to mount on the bottom or bottom.

  FIG. 7 shows an example of a vehicle in which the pressure vessel 10 shown in FIG. 6 is mounted on the lower or bottom portion of the vehicle. The pressure vessel 10 shown in FIG. 7 is arranged so that its longitudinal direction (axial direction) is the side surface direction of the vehicle and substantially parallel to the horizontal plane. A valve 18 is provided at one end of the pressure vessel 10 in the axial direction, more specifically at a portion corresponding to the opening of the base portion 16 in FIG. In addition, although illustrated about the vehicle which mounts the one pressure vessel 10 here, the several pressure vessel arrange | positioned in series or in parallel can be mounted in a vehicle as needed.

  FIG. 8 is an enlarged view of a main part for explaining an example of a conventional support structure of the pressure vessel 10 shown in FIG. The pressure vessel 10 has a pair of relatively high-rigidity side members 110a that extend in the front-rear direction of the vehicle, for example, the bottom of the vehicle body that is the base material via the pair of brackets 130 and 140. , 110b are attached to the bottom surfaces 112, 114.

  Each of the brackets 130 and 140 includes holding portions 132 and 142 and attachment portions 134 and 144 arranged by bending bent portions 158 and 168 so as to be substantially perpendicular to the holding portions 132 and 142, respectively.

  In general, the holding portions 132 and 142 are configured to hold both end portions of the pressure vessel 10 in the axial direction. The holding part 132 can have an opening into which the valve 18 of the pressure vessel 10 can be inserted, for example. At this time, by attaching the valve 18 inserted into the holding portion 132 to the base portion, the holding portion 132 is sandwiched between the base portion and the valve 18, and the pressure vessel 10 and the bracket 130 are fixed. On the other hand, the holding portion 142 of the bracket 140 for holding a so-called end side end portion on the opposite side to the valve 18 side in both axial end portions of the pressure vessel 10 is also the same as the holding portion 132 of the bracket 130. Although it can also be set as a structure, what is necessary is just the structure which can hold | maintain appropriately so that the pressure vessel 10 mounted on the vehicle may not fall easily, and there is no restriction | limiting in the shape of the holding parts 132 and 142.

  Generally, one or a plurality of insertion holes (not shown) are provided in the attachment portions 134 and 144, respectively. When the mounting portions 134 and 144 are brought into contact with the bottom surfaces 112 and 114 of the side members 110a and 110b, respectively, and tightened with fastening members 136 and 146 such as bolts or screws inserted into the insertion holes, the brackets 130 and 140 are attached. It is sandwiched and fixed between the heads of the fastening members 136 and 146 and the bottom surfaces 112 and 114 of the side members 110a and 110b of the vehicle. In this way, the pressure vessel 10 is mounted on the lower or bottom portion of the vehicle.

  In this way, even when the pressure vessel is mounted at the bottom or bottom of the vehicle, there are almost no problems in normal driving, but for example, rough roads such as unpaved roads, rough roads, stones, etc. When the vehicle passes over the obstacle, the road surface or the obstacle on the road surface may interfere with the lower portion or the bottom portion of the vehicle and may receive a load. At this time, if a pressure container or a bracket used for mounting the pressure container is subjected to a load exceeding an allowable limit, there may be a problem such as deformation or breakage of the pressure container and / or the bracket.

  On the other hand, in order to buffer the load received from the lower side of the pressure vessel, it is conceivable to apply a spring member that expands and contracts in response to an external force input. For example, the pressure vessel support structure shown in FIG. 9A has substantially the same configuration as the pressure vessel support structure shown in FIG. 8 except that brackets 150 and 160 are provided instead of the brackets 130 and 140. The brackets 150 and 160 include spring portions 138 and 148 between the holding portions 132 and 142 and the attachment portions 134 and 144, respectively. In the pressure vessel support structure having such a configuration, as shown in FIG. 9B, when an external force F is received from below the pressure vessel 10, the pressure vessel 10 moves upward in accordance with the external force F and a spring portion. 138 and 148 extend upward. According to the pressure vessel support structure shown in FIG. 9A and FIG. 9B, the impact due to the load received by the pressure vessel 10 and the brackets 150, 160 due to the external force F is obtained by the action of the brackets 150, 160 including the spring portions 138, 148. Can be relaxed.

  However, according to the support structure of the pressure vessel shown in FIGS. 9A and 9B, for example, the spring portions 138 and 148 may expand and contract even with slight vibration while the vehicle is running. Fatigue was caused by repeated stress at the connection point with the pipe (not shown), which could be a cause of strength reduction. For example, when the external force F received from the lower side of the pressure vessel is large, the spring portions 138 and 148 may be damaged, and the pressure vessel may drop off.

  Incidentally, in Patent Document 1, in a high-pressure tank support structure for a vehicle in which a high-pressure tank filled with gaseous fuel is installed, the high-pressure tank is supported by the vehicle body via an elastic body at the rear of the vehicle body, There is disclosed a high-pressure tank support structure for a vehicle in which the high-pressure tank and the elastic body are configured as dynamic dampers against vibration generated in the vehicle body by input.

  Patent Document 2 discloses an elastic body that supports one neck portion of a high-pressure vessel via a rigid support member and constantly urges the other neck portion toward the main body side of the high-pressure vessel. A support structure for a high-pressure vessel that is supported via a support member constituted by:

JP 2009-255759 A JP 2003-127675 A

  In the techniques of Patent Documents 1 and 2 described above, for example, there may be cases where measures against loads that can be received by the high-pressure vessel and the bracket are not sufficient due to an external force that the high-pressure vessel receives from below due to road surface interference or the like.

  The object of the present invention is to buffer and reduce the load that can be received by the pressure vessel and the bracket in an environment where the pressure vessel receives external forces such as impact and road surface interference. Is to hold.

  The configuration of the present invention is as follows.

  (1) A pressure vessel and a pair of brackets for holding both ends of the pressure vessel in the longitudinal direction and attaching to the base material, the pair of brackets being attached to the base material, An external force that is bent with respect to the mounting portion and that holds the end portion of the pressure vessel, and connects the mounting portion and the holding portion to buffer the external force received by the pressure vessel. A pressure vessel support structure, each comprising a buffer member.

  (2) The bracket includes a bracket main body portion including a plurality of link members that include at least the attachment portion and the holding portion and can move around a connection portion, and the external force buffer member is the plurality of link members. The structure for supporting a pressure vessel according to (1), wherein the movement of the pressure vessel is limited.

  (3) The pressure vessel support structure according to (1) or (2), wherein the external force buffering member includes a spring member that extends based on an external force received by the pressure vessel.

  (4) The support structure for a pressure vessel according to (3), wherein the external force buffering member further includes an extension limiting member that limits extension of the spring member.

  (5) A pressure vessel and a pair of brackets for holding both ends of the pressure vessel in the longitudinal direction and attaching to the vehicle body, the pair of brackets being attached to the bottom of the vehicle body, The holding portion for holding the end portion of the pressure vessel, the attachment portion and the holding portion are connected to each other, and an external force received from below the pressure vessel is received. A vehicle comprising: an external force buffering member for buffering.

  (6) The bracket includes a bracket main body portion including a plurality of link members that include at least the attachment portion and the holding portion and are movable around a connection portion, and the external force buffering member is the plurality of link members. The vehicle according to (5), wherein the movement of the vehicle is restricted.

  (7) The vehicle according to (5) or (6), wherein the external force buffering member includes a spring member that extends based on an external force received from below the pressure vessel.

  (8) The vehicle according to (7), wherein the external force buffering member further includes an extension limiting member that limits extension of the spring member.

  While the load on the pressure vessel and the bracket caused by the external force received by the pressure vessel is buffered and the load is reduced, the pressure vessel can be appropriately held in normal times.

In embodiment of this invention, it is the figure which looked at the side view for demonstrating the outline of a structure of a vehicle provided with a pressure vessel. In embodiment of this invention, it is the figure seen from the back for demonstrating the outline of a structure of a vehicle provided with a pressure vessel. In embodiment of this invention, it is the principal part enlarged view seen from the back for demonstrating the outline of a structure of the support structure of the pressure vessel in a vehicle. It is a figure for demonstrating the operation example of the support structure of the pressure vessel shown to FIG. 2A. It is the elements on larger scale of FIG. 2A. In embodiment of this invention, it is a figure for demonstrating the outline of a structure of a bracket main-body part. In other embodiment of this invention, it is a figure for demonstrating the outline of a structure of a bracket main-body part. In other embodiment of this invention, it is the principal part enlarged view seen from the back for demonstrating the outline of a structure of the support structure of the pressure vessel in a vehicle. It is the elements on larger scale of FIG. It is a fragmentary sectional view which shows the outline of a structure of a pressure vessel. It is the figure seen from the back for demonstrating the outline of a structure of a vehicle provided with a pressure vessel. It is the principal part enlarged view seen from the back for demonstrating an example of the support structure of a pressure vessel. It is the principal part enlarged view seen from the back for demonstrating the other example of the support structure of a pressure vessel. It is a figure for demonstrating the operation example of the support structure of the pressure vessel shown to FIG. 9A.

  Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings.

  1A and 1B show an example of a vehicle in which the pressure vessel 10 shown in FIG. 6 is mounted on the bottom or bottom of the vehicle. FIG. 1A is a side view of the vehicle, and FIG. 1B is a rear view of the vehicle. In addition, although illustrated about the vehicle which mounts two pressure vessels 10a and 10b here, it is not limited to this, The pressure vessel mounted in a vehicle may be one, and 3 or more It may be.

  The pressure vessels 10a and 10b are arranged in parallel near the rear surface 22 of the vehicle 100, in the present embodiment, in the vicinity of the rear wheel 24 so that the longitudinal direction is the side surface direction of the vehicle 100 and substantially parallel to the horizontal plane. Has been. Valves 18a and 18b that open and close according to the presence or absence of electric current are provided at one end in the longitudinal direction of the pressure vessels 10a and 10b, more specifically, at the portion corresponding to the opening of the base portion 16 in FIG. It has been.

  As the valves 18a and 18b, for example, according to the action of a built-in solenoid, the valve is opened by energization from a power source (not shown) and closed by de-energization, thereby allowing the fluid inside and outside the pressure vessels 10a and 10b to flow. A solenoid valve configured to be controllable can be applied.

  FIG. 2A is an enlarged view of a main part for explaining an example of the vehicle 100 including the support structure for the pressure vessel 10a shown in FIG. 1B. The pressure vessel 10a is attached to the bottom of the vehicle body via the pair of brackets 30 and 40, more specifically, for example, to the bottom surfaces 112 and 114 of the pair of side members 110a and 110b extending in the front-rear direction of the vehicle 100. It has been.

  2A, the bracket 30 attached to the first side member 110a includes a bracket body 70 including a holding member 32, an attachment member 34, and a movable member 37 connected as a series of link mechanisms, and the holding member 32 and the attachment. An external force buffering member 35 for connecting the member 34 is included. The bracket 40 attached to the second side member 110b includes a bracket main body 80 including a holding member 42, an attachment member 44, and a movable member 47 connected as a series of link mechanisms, and the holding member 42 and the attachment member 44. And an external force buffering member 45 for connecting the two.

  The holding members 32 and 42 shown in FIG. 2A are configured to hold both end portions in the axial direction of the pressure vessel 10a. The holding member 32 can have, for example, an opening into which the valve 18a of the pressure vessel 10a can be inserted. At this time, by attaching the valve 18a inserted into the holding member 32 to the base part (see FIG. 6), the holding member 32 is sandwiched between the base part and the valve 18a, and the pressure vessel 10a and the bracket 30 are connected. Fixed. On the other hand, the holding member 42 of the bracket 40 for holding the end portion on the opposite side to the valve 18 a side in both axial end portions of the pressure vessel 10 a is also configured similarly to the holding member 32 of the bracket 30. However, the shape of the holding members 32 and 42 is not limited as long as the pressure vessel 10a mounted on the vehicle can be appropriately held so as not to easily fall off.

  The attachment members 34 and 44 are each provided with one or a plurality of insertion holes (not shown). When the attachment portions 134 and 144 are brought into contact with the bottom surfaces 112 and 114 of the side members 110a and 110b, respectively, and tightened with fastening members 36 and 46 such as bolts or screws inserted into the insertion holes, the brackets 30 and 40 are attached. It is sandwiched and fixed between the heads of the fastening members 36 and 46 and the bottom surfaces 112 and 114 of the side members 110a and 110b of the vehicle. In this way, the pressure vessel 10a is mounted on the lower or bottom portion of the vehicle.

  As shown in FIG. 3, the external force buffering member 35 shown in FIG. 2A includes a spring member 356 that is an elastic member having an expansion / contraction function, and spring fixing members 352 and 354 for fixing both end portions of the spring member 356, respectively. Includes and is composed. The spring fixing members 352 and 354 are not easily detached from the holding member 32 and the mounting member 34 shown in FIG. 2A by, for example, bolts, screws, adhesives, other appropriate fixing members and / or fixing materials. The movement of the holding member 32 and the attachment member 34 is restricted. On the other hand, the external force buffering member 45 shown in FIG. 2A can also have substantially the same configuration as the external force buffering member 35. And the external force buffer members 35 and 45 can hold | maintain the normal shape of the bracket main-body parts 70 and 80 attached to the pressure vessel 10a and the side members 110a and 110b, respectively. Instead of the external force buffering member 35 including the spring fixing members 352 and 354, both ends of the spring member 356 may be directly attached to the holding member 32 and the attachment member 34 shown in FIG. 2A.

  On the other hand, as shown in FIG. 4A, the bracket main body portion 70 has a mounting member 34 and a movable member 37 connected by a connecting member 72, and a movable member 37 and a holding member 32 connected by a connecting member 74, respectively. It functions as one member of a link mechanism that can move around the members 72 and 74, that is, a link member. The bracket main body 80 shown in FIG. 2A can also have substantially the same configuration except that it is symmetrically arranged with the bracket main body 70, and thus detailed description thereof is omitted. As shown in FIG. 2A, the external force buffering member 35 having an appropriate spring strength and length is attached and fixed to the holding member 32 and the mounting member 34, and the external force buffering member 45 is fixed to the holding member 42 and the mounting member 44, respectively. Brackets 30 and 40 having various shapes are produced.

  A bracket main body 90 shown in FIG. 4B is a modification of the bracket main body 70 shown in FIG. 4A. The bracket body 90 has substantially the same configuration as the bracket body 70 shown in FIG. 4A except that it has a movable member 39 having a shape different from that of the movable member 37. In the illustrated bracket main body 90, the left end of the movable member 39 is in contact with the right end of the mounting member 34. For this reason, the movable member 39 is configured not to rotate clockwise as shown in the figure with respect to the attachment member 34 attached to the substrate. Note that the shape and / or configuration of the bracket main body that can be applied as the brackets 30 and 40 shown in FIG. 2A are not limited to those illustrated in FIGS. 4A and 4B, and can be applied as long as they have similar functions. is there. For example, a hinge (hinge) can be applied instead of the connection members 72 and 74 shown in FIG. 4A, and each link member can be connected to form a bracket body.

  Returning to FIG. 2A, when the pressure vessel 10a attached to the vehicle 100 using the brackets 30 and 40 receives the external force F from below the pressure vessel 10a as shown in FIG. The external force buffer members 35 and 45, more specifically, the spring members (see FIG. 3) extend, and the pressure vessel 10a moves above the vehicle 100. At this time, although the movable members 37 and 47 move greatly with respect to the vehicle 100, the relative relationship between the pressure vessel 10a and the holding members 32 and 42, the side members 110a and 110b, and the mounting members 34 and 44 is relatively small. The positional relationship hardly changes. For this reason, the pressure vessel 10a can be appropriately supported at the time of stoppage or normal traveling, and the member connected to the pressure vessel 10a and the piping or other pressure vessel 10a with respect to the external force F received from below the pressure vessel 10a; The load received by the brackets 30 and 40 can be reduced. At this time, the load received by the holding portion of the pressure vessel 10a by the holding members 32, 42, that is, the connection portion between the valve 18a and the main body of the pressure vessel 10a including the base portion 16 shown in FIG. 6, can be particularly reduced. For this reason, depending on the case, the outer diameter of the opening part containing the nozzle | cap | die part 16 shown in FIG. 6 can be made small, and not only the outer diameter of the nozzle | cap | die part 16 but the thickness of the fiber reinforced resin layer 14 can also be reduced. . Therefore, according to the present embodiment, the pressure vessel can be reduced in weight and further contribute to cost reduction.

  In addition, according to the present embodiment, the external force buffer members 35 and 45 are arranged so as to be inclined with respect to the moving direction of the pressure vessel 10a, and thus the external force buffer members 35 and 45 with respect to the moving length of the pressure vessel 10a. The extension of the spring member provided on the outer surface is suppressed, and the load received by the external force buffer members 35 and 45 can be reduced. Furthermore, since the external force buffer members 35 and 45 are configured as separate members from the bracket main body portions 70 and 80, even if the external force buffer members 35 and 45 are broken or damaged, the bracket main body portions 70 and 80 can hold the pressure vessel 10a appropriately.

  FIG. 5 is an enlarged view of a main part for explaining another example of the vehicle including the support structure for the pressure vessel 10a shown in FIG. 1B. A vehicle 200 shown in FIG. 5 is provided with brackets 50 and 60 having external force buffer members 55 and 65, respectively, instead of the brackets 30 and 40 having external force buffer members 35 and 45, respectively. And substantially the same configuration.

  As shown in FIG. 5A, the external force buffer member 55 includes a spring member 556 that is an elastic member having an expansion / contraction function, spring fixing members 552 and 554 for fixing both end portions of the spring member 556, and extension of the spring member 556. An extension limiting member 558 for limiting, a first fixing member 560 for fixing to the holding member 32, and a second fixing member 562 for fixing to the mounting member 34 are configured. The configuration including the spring member 556 and the spring fixing members 552 and 554 can be substantially the same as the configuration of the external force buffering member 35 including the spring member 356 and the spring fixing members 352 and 354 shown in FIG. The spring fixing members 552 and 554 are bonded or bonded to the first fixing member 560 and the second fixing member 562, respectively, to the extent that they do not easily fall off with, for example, an adhesive or other appropriate bonding material. It is fixed by.

  On the other hand, the extension limiting member 558 is fixed to the first and second fixing members 560 and 562 by bonding or joining to such an extent that they do not easily fall off. Instead of fixing the spring fixing member 552 and the first fixing member 560, the spring fixing member 554 and the second fixing member 562, both ends of the spring member 556 are connected to the first and second fixing members. It is also possible to adopt a configuration in which it is directly fixed to 560, 562.

  The elongation restricting member 558 can be made of, for example, a material that is poor in extensibility, such as an epoxy resin or a phenol resin, and breaks without being stretched by applying a tensile force exceeding a predetermined level. Both ends of the extension restricting member 558 are fixed to the first and second fixing members 560 and 562 by adhesion, bonding, or other appropriate methods, respectively. According to the present embodiment, the vertical movement of the pressure vessel 10a due to vibration during traveling of the vehicle 200 is suppressed, and the brackets 50 and 60, the pressure vessel 10a, and the connection portion between the valve 18a and a fluid pipe (not shown) are received. While the stress load can be reduced, when the pressure vessel 10a receives an external force from below, the extension limiting member 558 is broken and the extension limiting function of the spring member 556 is released. For this reason, the load which the member connected to the pressure vessel 10a, piping, and other pressure vessels 10a and the brackets 50 and 60 receive with respect to the external force received from below the pressure vessel 10a can be reduced. At this time, the load received by the holding portion of the pressure vessel 10a by the holding members 32, 42, that is, the connection portion between the valve 18a and the main body of the pressure vessel 10a including the base portion 16 shown in FIG. 6, can be particularly reduced. For this reason, depending on the case, the outer diameter of the opening part containing the nozzle | cap | die part 16 shown in FIG. 6 can be made small, and not only the outer diameter of the nozzle | cap | die part 16 but the thickness of the fiber reinforced resin layer 14 can also be reduced. . Therefore, according to the present embodiment, the pressure vessel can be reduced in weight and further contribute to cost reduction.

  In addition, according to the present embodiment, the external force buffer members 55 and 65 are arranged so as to be inclined with respect to the moving direction of the pressure vessel 10a, and thus the external force buffer members 55 and 65 with respect to the moving length of the pressure vessel 10a. The extension of the spring member provided on the inner surface is suppressed, and the load received by the external force buffer members 55 and 65 can be reduced. Furthermore, since the external force buffer members 55 and 65 are configured as members different from the bracket main body portions 70 and 80, even if the external force buffer members 55 and 65 are broken or damaged, the bracket main body portions 70 and 80 can hold the pressure vessel 10a appropriately.

  In the present embodiment, if necessary, the expansion limiting member 558 is made to have a predetermined thickness and / or thickness so that the expansion limiting member 558 is prevented from bending and contracting, and a spring is used as the expansion limiting member. It is also preferable to limit the contraction of the member 556 together.

  The support structure of the pressure vessel according to the embodiment of the present invention can be applied in a mode of being mounted on, for example, a lower part or a bottom part of a vehicle. The pressure vessel is not limited to, for example, one made of FRP, but may be made of steel, for example, but when mounted on a vehicle, a pressure vessel made of FRP is preferable. The fluid filled in the pressure vessel is not limited to natural gas or hydrogen, and may be nitrogen or oxygen, for example.

  Further, regarding the movement of the pressure vessel when the pressure vessel receives external force, for example, (1) To the extent that a gas pipe (not shown) connected to a valve provided at the end of the pressure vessel can follow and move. Gas piping connected to a valve provided at the end of the pressure vessel, such as limiting the movement of the pressure vessel, or (2) providing a joint member that can move following the movement of the pressure vessel It is also preferable to provide a mechanism for preventing part dropout, damage and other problems as necessary.

  The vehicle according to the embodiment of the present invention may include any vehicle that can mount a pressure vessel on the bottom or bottom of the vehicle, such as a motorcycle, a bicycle, and a train. In particular, the vehicle of the present embodiment can be suitably applied to an automobile such as a natural gas automobile or a fuel cell automobile, in which interference between the bottom of the pressure vessel and the road surface may occur depending on the arrangement of the pressure vessel.

  10, 10a, 10b Pressure vessel, 12 liner, 14 Fiber reinforced resin layer, 16 Base part, 18, 18a, 18b Valve, 22 Back surface, 24 Rear wheel, 30, 40, 50, 60, 130, 140, 150, 160 Bracket, 32, 42 Holding member, 34, 44 Mounting member, 35, 45, 55, 65 External force buffer member, 36, 46, 136, 146 Fastening member, 37, 39, 47 Movable member, 70, 80, 90 Bracket body Part, 72, 74 connecting member, 100, 200 vehicle, 110a, 110b side member, 112, 114 bottom surface, 132, 142 holding part, 134, 144 mounting part, 138, 148 spring part, 158, 168 bent part, 352 354, 552, 554 Spring fixing member, 356, 556 Spring member, 558 Extension limiter , 560, 562 fixing member.

Claims (8)

A pressure vessel and a pair of brackets for holding both ends in the longitudinal direction of the pressure vessel and attaching to the base material, the pair of brackets,
An attachment for attaching to the substrate;
A holding portion for holding the end of the pressure vessel, which is bent with respect to the attachment portion;
An external force buffering member for connecting the mounting part and the holding part and buffering an external force received by the pressure vessel;
And a support structure for a pressure vessel. The bracket includes at least the attachment portion and the holding portion, and has a bracket body portion including a plurality of link members that can move around the connection portion,
The pressure container support structure according to claim 1, wherein the external force buffering member restricts movement of the plurality of link members.   The pressure vessel support structure according to claim 1, wherein the external force buffer member includes a spring member that extends based on an external force received by the pressure vessel.   The pressure vessel support structure according to claim 3, wherein the external force buffering member further includes an extension limiting member that limits extension of the spring member. A pressure vessel and a pair of brackets for holding both ends of the pressure vessel in the longitudinal direction and attaching to the vehicle body, the pair of brackets,
An attachment portion for attachment to the bottom of the vehicle body;
A holding portion that is bent upward with respect to the attachment portion and holds an end of the pressure vessel;
An external force buffering member for connecting the mounting part and the holding part and buffering an external force received from below the pressure vessel;
A vehicle characterized by comprising each of the above. The bracket includes at least the attachment portion and the holding portion, and has a bracket body portion including a plurality of link members that can move around the connection portion,
The vehicle according to claim 5, wherein the external force buffering member restricts movement of the plurality of link members.   The vehicle according to claim 5, wherein the external force buffering member includes a spring member that extends based on an external force received from below the pressure vessel.   The vehicle according to claim 7, wherein the external force buffering member further includes an extension limiting member that limits extension of the spring member.

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