Pressure vessel fixing device

Abstract

To provide a pressure vessel fixing apparatus for fixing a pressure vessel to an object.SOLUTION: The apparatus includes: a frame member to be fixed to the object; a first locking part to lock one axial end of the pressure vessel to the frame member; and a second locking part to lock another axial end of the pressure vessel to the frame member. Therefore, it is possible to obtain an advantageous effect of simplifying the structure and improving the degree of design freedom and spatial utilization.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a fixing device for a pressure vessel, and more particularly to a fixing device for a pressure vessel that can simplify the structure and improve design freedom and space utilization. [Background technology]

[0002] A hydrogen vehicle is configured to run by generating electricity through a chemical reaction between hydrogen and oxygen, which drives a motor. More specifically, a hydrogen vehicle includes a pressure vessel in which hydrogen (H2) is stored, a fuel cell stack that generates electricity through an oxidation-reduction reaction between hydrogen and oxygen (O2), various devices for draining the generated water, a battery that stores the electricity generated by the fuel cell stack, a controller that converts and controls the generated electricity, and a motor that generates driving force.

[0003] A pressure vessel for a hydrogen vehicle may be a Type 4 pressure vessel. The Type 4 pressure vessel may include a liner (e.g., a non-metallic material) and a carbon fiber layer formed by wrapping a carbon fiber composite material around the outer surface of the liner.

[0004] Meanwhile, in recent years, various attempts have been made to package a fuel cell stack, pressure vessel (hydrogen tank), battery, converter, etc. into a power pack module and install it inside a hydrogen vehicle.

[0005] In particular, in recent years, various attempts have been made to minimize the size of a power pack module in order to mount the power pack module in a limited space (for example, the interior space of a hydrogen vehicle).

[0006] However, in the past, it was necessary to fix the pressure vessel using a clamp that was attached to wrap around the outer surface of the pressure vessel, and therefore space (height) for placing the clamp had to be secured to the thickness of the clamp on the outer surface of the pressure vessel, which created the problem that it was difficult to reduce the overall height (thickness) of the power pack module along the radial direction of the pressure vessel beyond a certain level.

[0007] Therefore, in recent years, various studies have been conducted to simplify the fixing structure of pressure vessels and improve space utilization and design freedom, but the results are still insufficient, and further development in this regard is required. Summary of the Invention [Problem to be solved by the invention]

[0008] An object of the embodiments of the present invention is to provide a pressure vessel fixing device that can simplify the structure and improve design freedom and space utilization.

[0009] In particular, embodiments of the present invention aim to reduce the height (thickness) of a structure for fixing a pressure vessel and the overall height (thickness along the radial direction of the pressure vessel) of a power pack module to which the pressure vessel is applied, thereby contributing to the miniaturization of the power pack module.

[0010] Another object of the present invention is to ensure smooth expansion and contraction of the pressure vessel and to guide the expansion and contraction of the pressure vessel uniformly in all directions based on the center of the pressure vessel.

[0011] Additionally, embodiments of the present invention aim to improve structural rigidity, thereby improving safety and reliability.

[0012] The problems to be solved by the embodiments are not limited to these, but can also include the means for solving the problems described below and the objectives and effects that can be grasped from the embodiments. [Means for solving the problem]

[0013] According to a first preferred embodiment of the present invention for achieving the above-mentioned object of the present invention, a pressure vessel fixing device for fixing a pressure vessel to an object includes a frame member fixed to the object, a first restraining portion for restraining one axial end of the pressure vessel to the frame member, and a second restraining portion for restraining the other axial end of the pressure vessel to the frame member.

[0014] This is to simplify the fixing structure of the pressure vessel and improve design freedom and space utilization.

[0015] In other words, conventionally, it is necessary to fix the pressure vessel using a clamp that is attached to the outer peripheral surface of the pressure vessel, and therefore a space (height) for placing the clamp must be secured to the same thickness as the clamp occupies on the outer peripheral surface of the pressure vessel, which creates the problem that it is difficult to reduce the overall height (thickness) of the power pack module along the radial direction of the pressure vessel beyond a certain level.

[0016] However, the first embodiment of the present invention does not use a clamp that wraps around the outer surface of the pressure vessel, and instead restrains one end and the other end along the length of the pressure vessel by a frame member, thereby eliminating the need to secure space (height) for placing the clamp, thereby achieving the advantageous effects of simplifying the structure and improving design freedom and space utilization.

[0017] However, the first embodiment of the present invention has the advantage that it is possible to further reduce the overall height (thickness) of the power pack module along the radial direction of the pressure vessel, since there is no need to secure space (height) for placing the clamp, which is equal to the thickness of the clamp.

[0018] Furthermore, in the first embodiment of the present invention, by restraining both ends of the pressure vessel along its length rather than the outer circumferential surface, the expansion and contraction of the pressure vessel can be uniformly guided in all directions (e.g., upward and downward) based on the center of the pressure vessel, thereby minimizing the movement of the center of the pressure vessel when the pressure vessel expands and contracts, and achieving the advantageous effect of minimizing the misalignment of the center of the pressure vessel relative to parts connected to the pressure vessel.

[0019] According to a first preferred embodiment of the present invention, a pressure vessel may include a main body portion, a first side portion formed at one end of the main body portion so as to have a dome shape, and a second side portion formed at the other end of the main body portion so as to have a dome shape, wherein a first restraining portion restrains the first side portion to the frame member, and a second restraining portion restrains the second side portion to the frame member.

[0020] The first restraining portion can be provided in various structures that can restrain the first side portion to the frame member.

[0021] Preferably, a tap portion is provided at one end of the pressure vessel, and the first restraining portion can restrain the tap portion and the frame member.

[0022] In this way, the first restraint portion is restrained using the tap portion formed in the pressure vessel during manufacture, without the need to provide (form) a separate fixing hole or fixing structure in the pressure vessel to fix the first restraint portion to the pressure vessel, thereby achieving the advantageous effects of simplifying the structure and manufacturing process and reducing costs.

[0023] According to a first preferred embodiment of the present invention, the first restraint portion may include a first bracket having a first fastening hole corresponding to the tap portion and fixed to the frame member, and a first fastening member fastened to the first fastening hole and the tap portion.

[0024] The structure for fixing the first bracket to the frame member can be modified in various ways depending on the required conditions and design specifications.

[0025] According to a first preferred embodiment of the present invention, a fixing device for a pressure vessel includes a first reference hole formed in a frame member, a first mounting hole formed in a first bracket corresponding to the first reference hole, a first fixing member fastened to the first reference hole and the first mounting hole, a second reference hole formed in the frame member spaced apart from the first reference hole, a second mounting hole formed in the first bracket corresponding to the second reference hole, and a second fixing member fastened to the second reference hole and the second mounting hole.

[0026] In this way, by fixing the first bracket to the frame member using the first fixing member and the second fixing member that are spaced apart from each other, it is possible to obtain the advantageous effect of suppressing rotation of the first bracket relative to the frame member and stably maintaining the positional state of the first bracket.

[0027] According to a first preferred embodiment of the present invention, the first reference hole can be arranged to have a first length along the radial direction of the pressure vessel, and the second reference hole can be arranged to have a second length along the radial direction of the pressure vessel that is longer than the first length.

[0028] In this way, the first embodiment of the present invention has an advantageous effect of enabling the fastening of the second fixing member even if the second mounting hole and the second reference hole do not perfectly align along the radial direction of the pressure vessel due to manufacturing tolerances, etc., by making the second reference hole longer than the first reference hole along the radial direction of the pressure vessel.

[0029] The second restraining portion can be provided in various structures that can restrain the second side portion to the frame member.

[0030] According to a first preferred embodiment of the present invention, the second restraining portion can include a support portion that supports the outer surface of the second side portion, and a second bracket that supports the support portion on the frame member.

[0031] Preferably, the support portion is provided in the shape of a ring that partially surrounds the outer surface of the second side portion.

[0032] According to a first preferred embodiment of the present invention, the second restraint portion may include a second fastening hole formed in the second bracket, a fastening portion provided on the frame member having a connecting hole corresponding to the second fastening hole, and a second fastening member fastened to the second fastening hole and the connecting hole.

[0033] In this way, by fastening the second fastening member to the second fastening hole and the connecting hole, the support portion can be more closely attached to the second side portion, thereby achieving the advantageous effect of more firmly fixing the positioning state of the pressure vessel.

[0034] According to a first preferred embodiment of the present invention, the second restraint portion may include a guide slot formed in the frame member along the longitudinal direction of the pressure vessel, and a guide protrusion connected to the second bracket and linearly movably accommodated in the guide slot.

[0035] In this way, by allowing the guide protrusion connected to the second bracket to move linearly along the guide slot, the movement of the second bracket relative to the frame member (movement in the direction in which the support portion approaches the second side portion) can be more stably supported when fastening the second fastening member to the fastening portion, and the advantageous effect of more accurately adhering the support portion to the outer surface of the second side portion can be obtained.

[0036] Preferably, an inclined guide portion for guiding the entry of the guide protrusion can be provided at the opening of the guide slot.

[0037] In this way, in the first embodiment of the present invention, by forming the inclined guide portion at the opening of the guide slot, the guide protrusion can be inserted into the guide slot more smoothly.

[0038] In addition, in the first embodiment of the present invention, the guide protrusion moves along the inclined guide portion and is guided into the guide slot. Therefore, even if the guide protrusion is positioned misaligned with the guide slot, the guide protrusion can be guided into the guide slot. This minimizes misassembly of the second bracket, and has the advantageous effects of increasing manufacturing efficiency and reducing manufacturing time.

[0039] Preferably, the guide slot is provided to have a first width along the radial direction of the pressure vessel, and the guide projection is provided to have a second width corresponding to the first width.

[0040] In this way, by making the guide slot and the guide protrusion have widths that correspond to each other, it is possible to obtain the advantageous effect of suppressing abnormal movement (e.g., movement along the radial direction of the pressure vessel) and rotation of the guide protrusion while it moves along the guide slot.

[0041] More preferably, the guide slot is provided to have a first thickness along the vertical direction, and the guide protrusion is provided to have a second thickness corresponding to the first thickness.

[0042] In this way, by making the guide slot and the guide protrusion have corresponding thicknesses, it is possible to obtain the advantageous effect of more effectively suppressing abnormal movement and rotation of the guide protrusion while it moves along the guide slot.

[0043] According to a first preferred embodiment of the present invention, the fixing device for the pressure vessel can include a restraining protrusion provided at the end of the guide protrusion so as to have a cross-sectional area larger than that of the guide slot, and disposed on the outer surface of the frame member.

[0044] In this way, by providing a restraining protrusion at the end of the guide protrusion and supporting the restraining protrusion on the outer surface of the frame member, it is possible to obtain the advantageous effect of preventing the second bracket from moving in the vertical direction and separating from the frame member.

[0045] According to a first preferred embodiment of the present invention, the fixing device for the pressure vessel may include an elastic pad interposed between the second side portion and the support portion.

[0046] In this way, by interposing the elastic pad between the second side portion and the support portion, it is possible to reduce vibrations transmitted from the frame member to the pressure vessel when vibrations occur (for example, when vibrations occur due to vehicle operation), and it is possible to obtain advantageous effects such as minimizing damage and deformation of the pressure vessel due to contact with the support portion when the pressure vessel expands and contracts, and minimizing the generation of abnormal noise.

[0047] According to a first preferred embodiment of the present invention, the pressure vessel fixing device can include a mounting portion that is provided on the frame member and on which the pressure vessel is mounted.

[0048] The rest can be provided in a variety of configurations on which the pressure vessel can be placed.

[0049] As an example, the mounting portion may include a first mounting rib provided on the frame member on which the main body portion is placed, and a second mounting rib provided on the frame member spaced apart from the first mounting rib on which the main body portion is placed.

[0050] Preferably, the first mounting rib includes a first mounting surface with which the outer peripheral surface of the main body portion comes into close contact, and the second mounting rib includes a second mounting surface with which the outer peripheral surface of the main body portion comes into close contact.

[0051] In this way, by placing the outer surface of the main body in close contact with the first and second placement surfaces, the placement state of the main body can be maintained stably, and the advantageous effect of minimizing movement and shaking of the main body can be achieved.

[0052] According to a first preferred embodiment of the present invention, the pressure vessel fixing device can include a first mounting pad interposed between the main body portion and the first mounting rib, and a second mounting pad interposed between the main body portion and the second mounting rib.

[0053] In this way, by interposing the first and second mounting pads between the first and second mounting ribs and the main body portion, it is possible to mitigate vibrations transmitted from the frame member (mounting portion) to the pressure vessel when vibrations occur, thereby achieving the advantageous effects of minimizing damage and deformation of the pressure vessel due to contact with the mounting portion when the pressure vessel expands and contracts, and minimizing the generation of abnormal noise.

[0054] According to a second preferred embodiment of the present invention, a pressure vessel fixing device for fixing a pressure vessel to a target body includes: a first frame member fixed to the target body; a second frame member fixed to the target body and spaced apart from the first frame member; a first clamp body provided to surround a portion of an outer circumferential surface of the pressure vessel; a first clamp including a first connecting portion formed at one end of the first clamp body and connected to the first frame member, and a first coupling portion formed at the other end of the first clamp body and movable toward and away from one side of the second frame member; a second clamp body provided to surround another portion of the outer circumferential surface of the pressure vessel; a second connecting portion formed at one end of the second clamp body and connected to the first frame member, and a second coupling portion formed at the other end of the second clamp body and movable toward and away from the other side of the second frame member; and an elastic member that elastically supports movement of the first coupling portion and the second coupling portion relative to the second frame member.

[0055] This is to stably absorb displacement due to expansion and contraction of the pressure vessel, thereby improving safety and reliability.

[0056] In other words, of the upper and lower clamps that are conventionally attached to a fixed frame so as to encase the outer periphery of a pressure vessel, only the upper clamp can absorb displacement of the pressure vessel (the position of the upper clamp encasing the periphery of the pressure vessel can be changed in response to the expansion of the pressure vessel), and the lower clamp is fixed (welded) to the fixed frame as a single unit, which causes the pressure vessel to expand only in a direction toward the upper clamp when hydrogen is charged.This causes the center position of the pressure vessel to shift relative to the valves and piping connected to the pressure vessel, increasing the risk of hydrogen leaking from the connection points between the valves and piping and the pressure vessel, and reducing safety and reliability.

[0057] However, in the second embodiment of the present invention, one end of the first clamp and one end of the second clamp are adapted to move towards and away from the fixed frame in response to the expansion and contraction of the pressure vessel, thereby stably absorbing displacement due to the expansion and contraction of the pressure vessel, thereby achieving the advantageous effect of improving safety and reliability.

[0058] However, the second embodiment of the present invention can induce the expansion and contraction of the pressure vessel uniformly in the upward and downward directions based on the center of the pressure vessel, thereby minimizing the movement of the center of the pressure vessel when the pressure vessel expands and contracts, and achieving the advantageous effect of minimizing the misalignment of the center of the pressure vessel relative to the parts connected to the pressure vessel.

[0059] According to a third preferred embodiment of the present invention, a pressure vessel fixing device for fixing a pressure vessel to an object includes a frame portion fixed to the object, a first clamp supported by the frame portion and provided to enclose a portion of the outer peripheral surface of the pressure vessel, a second clamp supported by the frame portion and provided to enclose another portion of the outer peripheral surface of the pressure vessel, a first fastening member rotatably mounted on the first clamp, and a second fastening member connected to the second clamp and fastened to the first fastening member so as to be linearly movable along the length direction of the first fastening member in response to rotation of the first fastening member.

[0060] This is to stably absorb displacement due to expansion and contraction of the pressure vessel, thereby improving safety and reliability.

[0061] In other words, of the upper and lower clamps that are conventionally attached to a fixed frame so as to encase the outer periphery of a pressure vessel, only the upper clamp can absorb displacement of the pressure vessel (the position of the upper clamp encasing the periphery of the pressure vessel can be changed in response to the expansion of the pressure vessel), and the lower clamp is fixed (welded) to the fixed frame as a single unit, which causes the pressure vessel to expand only in a direction toward the upper clamp when hydrogen is charged.This causes the center position of the pressure vessel to shift relative to the valves and piping connected to the pressure vessel, increasing the risk of hydrogen leaking from the connection points between the valves and piping and the pressure vessel, and reducing safety and reliability.

[0062] However, in the third embodiment of the present invention, the first clamp and the second clamp move toward and away from each other in response to the expansion and contraction of the pressure vessel (the first clamp and the second clamp all move relative to the pressure vessel), thereby stably absorbing displacement due to the expansion and contraction of the pressure vessel, thereby achieving the advantageous effect of improving safety and reliability.

[0063] However, the third embodiment of the present invention has the advantageous effect of stably absorbing displacement due to expansion and contraction of the pressure vessel by causing the second fastening member connected to the second clamp to move in a direction toward and away from the first clamp in response to the rotation of the first fastening member connected to the first clamp.

[0064] As such, the third embodiment of the present invention can induce the expansion and contraction of the pressure vessel uniformly in the upward and downward directions based on the center of the pressure vessel, thereby minimizing the movement of the center of the pressure vessel when the pressure vessel expands and contracts, and achieving the advantageous effect of minimizing the misalignment of the center of the pressure vessel relative to parts connected to the pressure vessel.

[0065] Furthermore, according to the third embodiment of the present invention, by making the second fastening member move linearly along the length of the first fastening member in response to the rotation of the first fastening member, the first clamp and the second clamp can be moved toward and away from each other in response to the expansion and contraction of the pressure vessel, thereby making it possible to selectively adjust the fastening force of the first clamp and the second clamp.

[0066] Therefore, the clamping force of the first clamp and the second clamp can be adjusted according to the amount of hydrogen charged (used), so that the clamping force of the first clamp and the second clamp can be maintained constant regardless of the expansion and contraction of the pressure vessel, thereby achieving the advantageous effect of maintaining the clamped state of the pressure vessel more stably. [Brief explanation of the drawings]

[0067] [Figure 1] 1 is an exploded perspective view illustrating a pressure vessel fixing device according to a first embodiment of the present invention. FIG. [Figure 2] 1 is a perspective view for explaining a pressure vessel fixing device according to a first embodiment of the present invention. FIG. [Figure 3] FIG. 2 is a view for explaining a first restraining portion as a fixing device for a pressure vessel according to a first embodiment of the present invention. [Figure 4] FIG. 2 is a view for explaining a first bracket as a fixing device for a pressure vessel according to the first embodiment of the present invention. [Figure 5] FIG. 3 is a view for explaining a second restraining portion as a fixing device for a pressure vessel according to the first embodiment of the present invention. [Figure 6] 3A and 3B are diagrams illustrating guide protrusions and restraint protrusions as a pressure vessel fixing device according to a first embodiment of the present invention. [Figure 7] 2 is a diagram illustrating a fastening portion and a guide slot as a fixing device for a pressure vessel according to a first embodiment of the present invention. FIG. [Figure 8]4A and 4B are diagrams illustrating the fastening structure of a second fastening member as part of the pressure vessel fixing device according to the first embodiment of the present invention. [Figure 9] FIG. 10 is an exploded perspective view illustrating a pressure vessel fixing device according to a second embodiment of the present invention. [Figure 10] FIG. 10 is a perspective view illustrating a pressure vessel fixing device according to a second embodiment of the present invention. [Figure 11] FIG. 11 is an enlarged view of the area "A" in FIG. [Figure 12] FIG. 10 is a diagram illustrating a support member as a fixing device for a pressure vessel according to a second embodiment of the present invention. [Figure 13] FIG. 10 is a diagram illustrating an elastic member as a fixing device for a pressure vessel according to a second embodiment of the present invention. [Figure 14] FIG. 10 is a view for explaining an elastic member housed in a support member as a fixing device for a pressure vessel according to a second embodiment of the present invention. [Figure 15] FIG. 10 is a diagram illustrating a first fastening member and a second fastening member as a pressure vessel fixing device according to a second embodiment of the present invention. [Figure 16] FIG. 10 is a diagram illustrating a first hinge portion and a second hinge portion as a fixing device for a pressure vessel according to a second embodiment of the present invention. [Figure 17] FIG. 10 is a perspective view illustrating a pressure vessel fixing device according to a third embodiment of the present invention. [Figure 18] FIG. 10 is a diagram illustrating the connecting structure of a first clamp and a second clamp as a pressure vessel fixing device according to a third embodiment of the present invention. [Figure 19] FIG. 10 is an exploded perspective view illustrating a pressure vessel fixing device according to a third embodiment of the present invention. [Figure 20] FIG. 10 is a diagram for explaining a first clamp and a second clamp as a pressure vessel fixing device according to a third embodiment of the present invention. [Figure 21] FIG. 10 is a view for explaining a frame portion as a fixing device for a pressure vessel according to a third embodiment of the present invention. [Figure 22]FIG. 10 is a diagram for explaining a drive unit and a coupler as a pressure vessel fixing device according to a third embodiment of the present invention. [Figure 23] FIG. 10 is a diagram for explaining a first hinge portion and a second hinge portion as a fixing device for a pressure vessel according to a third embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0068] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0069] However, the technical concept of the present invention is not limited to some of the described embodiments, and may be realized in various different forms, and one or more of the components of the embodiments may be selectively combined or substituted and used within the scope of the technical concept of the present invention.

[0070] Furthermore, unless otherwise clearly defined, terms (including technical and scientific terms) used in the embodiments of the present invention may be interpreted in the sense that they are commonly understood by a person of ordinary skill in the art to which the present invention belongs, and commonly used terms, such as those defined in a dictionary, may be interpreted in the sense that they are in the context of the relevant art.

[0071] Furthermore, the terms used in the embodiments of the present invention are intended to describe the embodiments and are not intended to limit the present invention.

[0072] In this specification, unless otherwise specified in the text, the singular form includes the plural form, and when it says "A and (and) at least one (or more) of B and C," it means that it includes one or more of all possible combinations of A, B, and C.

[0073] Additionally, terms such as first, second, A, B, (a), (b), etc. may be used to describe components of embodiments of the present invention.

[0074] Such terms are used only to distinguish a component from other components, and do not limit the essence, order, or sequence of the components.

[0075] Furthermore, when a component is described as being "coupled," "coupled," or "connected" to another component, it includes not only the case where the component is directly coupled, coupled, or connected to the other component, but also the case where the component is "coupled," "coupled," or "connected" by yet another component between the component and the other component.

[0076] Furthermore, when describing something as being formed or disposed "above (above) or below (below)" each component, "above (above)" or "below (below)" includes not only the case where two components are in direct contact with each other, but also the case where one or more other components are formed or disposed between the two components. Furthermore, when expressed as "above (above) or below (below)," it can include not only the meaning of "above (above)" but also the meaning of "below" based on one component.

[0077] 1 to 8, a pressure vessel fixing device 10 for fixing a pressure vessel 20 to an object according to a first embodiment of the present invention includes a frame member 100 fixed to the object, a first restraining portion 200 for restraining one end of the pressure vessel 20 along the axial direction to the frame member 100, and a second restraining portion 300 for restraining the other end of the pressure vessel 20 along the axial direction to the frame member 100.

[0078] For reference, the pressure vessel fixing device 10 according to the first embodiment of the present invention can be used to fix the pressure vessel 20 to various objects, and the present invention is not limited or restricted by the type and structure of the object to which the pressure vessel 20 is fixed.

[0079] For example, the pressure vessel fixing device 10 according to the first embodiment of the present invention can be used to fix a pressure vessel 20 inside a vehicle (eg, a passenger car or commercial vehicle).

[0080] High-pressure compressed hydrogen can be stored inside the pressure vessel 20. For example, the pressure vessel 20 can include a liner (not shown), a carbon fiber layer (not shown) formed to encase the outer surface of the liner, and a glass fiber layer (not shown) formed to encase the outer surface of the carbon fiber layer, and the pressure vessel 20 can selectively expand or contract depending on the pressure of the hydrogen stored in the pressure vessel 20.

[0081] More specifically, referring to FIG. 3, the pressure vessel 20 may include a main body portion 22, a first side portion 24 formed at one end (the left end as viewed in FIG. 3) of the main body portion 22 so as to have a dome shape, and a second side portion 26 formed at the other end (the right end as viewed in FIG. 3) of the main body portion 22 so as to have a dome shape.

[0082] As an example, the main body portion 22 may be formed in a hollow cylindrical shape, and the first side portion 24 and the second side portion 26 may be formed to have a dome shape and be integrally connected to both ends of the main body portion 22.

[0083] Additionally, one end of the pressure vessel 20 may be provided with a tap portion 24a.

[0084] For reference, the tap portion 24a may be formed to support (fix) the pressure vessel 20 using a jig or the like during the process of winding the carbon fiber layer and the glass fiber layer onto the outer surface of the liner. As an example, the tap portion 24a may be formed to have a thread on the inner peripheral surface by conventional tapping, and may be provided along the length of the pressure vessel 20 so as to be on the same line as the center of the pressure vessel 20.

[0085] The frame member 100 can be fixed to an object (eg, the body of a vehicle).

[0086] The frame member 100 may be provided to surround the periphery of the pressure vessel 20 to protect the pressure vessel 20 and other components constituting the power pack module (not shown). For example, the frame member 100 may be made of a metal material.

[0087] The structure and configuration of the frame member 100 can be variously changed depending on the required conditions and design specifications, and the structure and configuration of the frame member 100 do not restrict or limit the present invention.

[0088] As an example, the frame member 100 may be formed in the shape of a square case with four open sides and configured to form the outer frame of the pressure vessel fixing device 10, and the pressure vessel 20 may be housed inside the frame member 100.

[0089] 1 to 4, the first restraining portion 200 is provided so as to restrain one end of the pressure vessel 20 along the axial direction (the left end with reference to FIG. 3) to the frame member 100.

[0090] Preferably, the first restraining portion 200 is provided to restrain the first side portion 24 to the frame member 100 .

[0091] In this way, in the first embodiment of the present invention, the first restraint portion 200 restrains the first side portion 24 rather than the outer peripheral surface of the main body portion 22, so there is no need to secure additional space to install the first restraint portion 200, which has the advantageous effect of simplifying the structure and improving design freedom and space utilization.

[0092] However, the first embodiment of the present invention has the advantage that it is not necessary to secure space (height) to place the first restraint portion 200 on the outer peripheral surface of the main body portion 22, and therefore it is possible to further reduce the overall height (thickness) of the power pack module along the radial direction of the pressure vessel 20.

[0093] The first restraining portion 200 may be provided in various structures capable of restraining the first side portion 24 to the frame member 100, and the present invention is not limited or restricted by the structure of the first restraining portion 200.

[0094] Preferably, the first restraining portion 200 can be provided so as to restrain the tap portion 24 a provided on the first side portion 24 and the frame member 100 .

[0095] In this way, the first restraint portion 200 is restrained using the tap portion 24a formed in the pressure vessel 20 during manufacturing of the pressure vessel 20, without providing (forming) a separate fixing hole or fixing structure in the pressure vessel 20 to fix the first restraint portion 200 to the pressure vessel 20, thereby achieving the advantageous effects of simplifying the structure and manufacturing process and reducing costs.

[0096] As an example, the first restraint portion 200 may include a first bracket 210 having a first fastening hole 212 corresponding to the tap portion 24a and fixed to the frame member 100, and a first fastening member 220 fastened to the first fastening hole 212 and the tap portion 24a.

[0097] For example, the first bracket 210 may be formed to have a substantially "L" shape, one end of the first bracket 210 may be fixed to the frame member 100, the other end of the first bracket 210 may be disposed adjacent to the tap portion 24a, and a first fastening hole 212 having a diameter corresponding to the tap portion 24a may be formed in the other end of the first bracket 210. Preferably, the first fastening hole 212 may be disposed coaxially with the tap portion 24a.

[0098] The first fastening member 220 may be a conventional fastening member that can be fastened (e.g., screwed) to the first fastening hole 212 and the tapped portion 24a, and the present invention is not limited or restricted by the type and structure of the first fastening member 220. As an example, the first fastening member 220 may be a conventional bolt.

[0099] The first fastening member 220 passes through the first fastening hole 212 and is fastened to the tap portion 24a, thereby fixing the first bracket 210 and the pressure vessel 20 together.

[0100] The structure for fixing the first bracket 210 to the frame member 100 can be modified in various ways depending on the required conditions and design specifications.

[0101] According to a preferred embodiment of the present invention, the pressure vessel fixing device 10 may include a first reference hole 104a formed in the frame member 100, a first mounting hole 214a formed in the first bracket 210 corresponding to the first reference hole 104a, a first fixing member 230 fastened to the first reference hole 104a and the first mounting hole 214a, a second reference hole 104b formed in the frame member 100 spaced apart from the first reference hole 104a, a second mounting hole 214b formed in the first bracket 210 corresponding to the second reference hole 104b, and a second fixing member 240 fastened to the second reference hole 104b and the second mounting hole 214b.

[0102] For example, a plurality of first reference holes 104a may be formed spaced apart in the frame member 100, and a plurality of first mounting holes 214a corresponding to the first reference holes 104a may be formed in the first bracket 210. According to another embodiment of the present invention, only one first reference hole may be formed in the frame member, and only one first mounting hole may be formed in the first bracket.

[0103] As the first fixing member 230 and the second fixing member 240, a normal bolt may be used, and the present invention is not limited or restricted by the type and structure of the first fixing member 230 and the second fixing member 240.

[0104] For example, the first fixing member 230 can be fastened to a nut (not shown) provided on the outer surface (bottom surface based on Figure 2) of the frame member 100 after passing through the first mounting hole 214a and the first reference hole 104a in that order, thereby fixing the first bracket 210 and the frame member 100 together.

[0105] Similarly, the second fixing member 240 can be fastened to a nut (not shown) provided on the outer surface (bottom surface based on Figure 2) of the frame member 100 after passing through the second mounting hole 214b and the second reference hole 104b in that order, thereby fixing the first bracket 210 and the frame member 100 together.

[0106] In this way, by fixing the first bracket 210 to the frame member 100 using the first fixing member 230 and the second fixing member 240 that are spaced apart from each other, it is possible to obtain the advantageous effect of suppressing rotation of the first bracket 210 relative to the frame member 100 and maintaining a stable positioning state of the first bracket 210.

[0107] According to a preferred embodiment of the present invention, the first reference hole 104a can be arranged to have a first length L1 along the radial direction of the pressure vessel 20, and the second reference hole 104b can be arranged to have a second length L2 along the radial direction of the pressure vessel 20 that is longer than the first length.

[0108] In this way, the first embodiment of the present invention has an advantageous effect of enabling the second fixing member 240 to be fastened even if the second fixing hole 214b and the second reference hole 104b do not perfectly align along the radial direction of the pressure vessel 20 due to manufacturing tolerances, etc., by making the second reference hole 104b have a longer length (L2>L1) than the first reference hole 104a along the radial direction of the pressure vessel 20.

[0109] In the first embodiment of the present invention described above and shown in the drawings, an example is given in which one end of the first bracket 210 is fixed to the frame member 100 via the first fixing member 230 and the second fixing member 240. However, according to other embodiments of the present invention, one end of the first bracket may also be fixed to the frame member by welding.

[0110] 2 and 5 to 8, second restraining portion 300 is provided so as to restrain the other axial end of pressure vessel 20 (the right end with reference to FIG. 2) to frame member 100.

[0111] Preferably, the second restraining portion 300 is provided to restrain the second side portion 26 to the frame member 100 .

[0112] In this way, by having the second restraint portion 300 restrain the second side portion 26 rather than the outer peripheral surface of the main body portion 22, there is no need to secure additional space to install the second restraint portion 300, which has the advantageous effect of simplifying the structure and improving design freedom and space utilization.

[0113] However, the first embodiment of the present invention has the advantage that it is not necessary to secure space (height) to place the second restraint portion 300 on the outer peripheral surface of the main body portion 22, and therefore it is possible to further reduce the overall height (thickness) of the power pack module along the radial direction of the pressure vessel 20.

[0114] The second restraint portion 300 may be provided in various structures capable of restraining the second side portion 26 to the frame member 100, and the present invention is not limited or restricted by the structure of the second restraint portion 300.

[0115] As an example, the second restraint portion 300 may include a support portion 310 that supports the outer surface of the second side portion 26 and a second bracket 320 that supports the support portion 310 to the frame member 100 .

[0116] Preferably, the support portion 310 may be provided in the shape of a hollow ring that partially surrounds the outer surface of the second side portion 26. More preferably, the support portion 310 may be formed to have a dome shape that corresponds to the outer surface of the second side portion 26, and may be closely attached to the outer surface of the second side portion 26.

[0117] According to other embodiments of the present invention, the support may be formed in an arc shape or in other shapes.

[0118] The second bracket 320 may be formed in various structures capable of supporting the support portion 310 on the frame member 100, and the present invention is not limited or restricted by the structure of the second bracket 320.

[0119] For example, the upper end of the second bracket 320 may be integrally connected (e.g., welded) to the side of the support portion 310, and the lower end of the second bracket 320 may be supported by the frame member 100.

[0120] Here, the lower end of the second bracket 320 being supported by the frame member 100 can be defined as a concept that includes all cases in which the lower end of the second bracket 320 is integrally fixed or connected to the frame member 100, or is detachably placed thereon.

[0121] For reference, one end of the pressure vessel 20 is fixed integrally to the frame member 100 via the first restraint part 200, and therefore the second bracket 320 connected to the support part 310 does not need to be fixed integrally to the frame member 100 (for example, by bolting), and the positioning state of the pressure vessel 20 can be stably maintained by the first restraint part 200 and the second restraint part 300 simply by supporting the second bracket 320 to the frame member 100.

[0122] In this way, the first embodiment of the present invention has the advantageous effect of simplifying the structure and manufacturing process and reducing costs by restraining the second restraint portion 300 to the pressure vessel 20 by the support portion 310 that is in close contact with the outer surface of the second side portion 26, without providing (forming) a separate fixing hole in the pressure vessel 20 to fix the second restraint portion 300 to the pressure vessel 20.

[0123] However, since the first embodiment of the present invention does not require the formation of a separate fixing hole for fixing the second restraint portion 300 to the pressure vessel 20, it has the advantageous effect of stably fixing the positioning state of the pressure vessel 20 without damaging the pressure vessel 20 or reducing its structural rigidity.

[0124] Furthermore, according to the first embodiment of the present invention, the first and second restraint members 200 and 300 do not restrain the outer peripheral surface of the main body 22, but rather restrain the first and second side members 24 and 26. This allows the expansion and contraction of the pressure vessel 20 to be guided as uniformly (without deflection) as possible in all directions (e.g., vertical and horizontal directions) based on the center of the pressure vessel 20. This minimizes the movement of the center of the pressure vessel 20 during expansion and contraction, and advantageously minimizes misalignment of the pressure vessel 20 with respect to components (e.g., valves, piping) connected to the pressure vessel 20. This reduces the risk of hydrogen leakage from connecting components such as valves and piping connected to the pressure vessel 20, thereby advantageously improving safety and reliability.

[0125] According to a preferred embodiment of the present invention, the second restraint portion 300 may include a second fastening hole 322 formed in the second bracket 320, a fastening portion 330 provided on the frame member 100 having a connecting hole 332 corresponding to the second fastening hole 322, and a second fastening member 340 fastened to the second fastening hole 322 and the connecting hole 332.

[0126] For example, the second fastening hole 322 may be formed on an extension (not shown) extending laterally from the lower end of the second bracket 320 .

[0127] The fastening portion 330 may be formed in various structures having a coupling hole 332 corresponding to the second fastening hole 322, and the present invention is not limited or restricted by the structure of the fastening portion 330.

[0128] For example, the fastening portion 330 may be formed by partially cutting and then bending a portion of the frame member 100. Preferably, a nut (not shown) to which the second fastening member 340 can be fastened may be integrally welded to the fastening portion 330, and a nut hole of the nut and the coupling hole 332 may be in communication with each other.

[0129] In this way, by partially bending a portion of the frame member 100 to form the fastening portion 330, it is possible to obtain the advantageous effect of simplifying the structure and manufacturing process. According to another embodiment of the present invention, a fastening portion that is manufactured separately from the frame member may be attached (or welded) or coupled to the frame member.

[0130] The second fastening member 340 can be fastened to a nut welded to the fastening portion 330 after passing through the second fastening hole 322 and the coupling hole 332 in sequence, thereby fixing the second bracket 320 and the frame member 100 together.

[0131] A typical bolt may be used as the second fastening member 340, and the present invention is not limited or restricted by the type and structure of the second fastening member 340.

[0132] In this way, by fastening the second fastening member 340 to the second fastening hole 322 and the connecting hole 332, the support portion 310 can be more closely attached to the second side portion 26, thereby achieving the advantageous effect of more firmly fixing the positioning state of the pressure vessel 20.

[0133] According to a preferred embodiment of the present invention, the second restraint portion 300 may include a guide slot 110 formed in the frame member 100 along the longitudinal direction of the pressure vessel 20 (the longitudinal direction of the main body portion 22), and a guide protrusion 350 connected to the second bracket 320 and linearly movably accommodated in the guide slot 110.

[0134] An opening may be formed at one end of the guide slot 110, and the guide protrusion 350 may enter the inside of the guide slot 110 through the opening of the guide slot 110.

[0135] The guide protrusion 350 may be formed as a protruding structure at the lower end of the second bracket 320 and is disposed to move linearly along the guide slot 110 .

[0136] In this way, by allowing the guide protrusion 350 connected to the second bracket 320 to move linearly along the guide slot 110, when the second fastening member 340 is fastened to the fastening portion 330, the movement of the second bracket 320 relative to the frame member 100 (movement in the direction in which the support portion approaches the second side portion) is more stably supported, and the advantageous effect of more accurately adhering the support portion 310 to the outer surface of the second side portion 26 can be obtained.

[0137] Preferably, an inclined guide portion 112 for guiding the guide protrusion 350 may be provided at the opening of the guide slot 110 .

[0138] For example, the inclined guide portion 112 may be provided to form an entrance (entrance into the guide slot) that gradually narrows along a direction from the outside to the inside of the guide slot 110.

[0139] The inclined guide portion 112 may be formed in a flat or curved shape, and the present invention is not limited or restricted by the structure and shape of the inclined guide portion 112.

[0140] As described above, in the first embodiment of the present invention, the inclined guide portion 112 is formed at the opening of the guide slot 110, so that the guide protrusion 350 can enter the guide slot 110 more smoothly.

[0141] In addition, in the first embodiment of the present invention, the guide protrusion 350 is guided by the guide slot 110 while moving along the inclined guide portion 112. Therefore, even if the guide protrusion 350 is misaligned with the guide slot 110, the guide protrusion 350 can be guided by the guide slot 110. This minimizes the assembly of the second bracket 320, thereby achieving advantageous effects of improving manufacturing efficiency and shortening manufacturing time.

[0142] Preferably, the guide slot 110 is provided to have a first width W1 along the radial direction of the pressure vessel 20, and the guide protrusion 350 is provided to have a second width W2 corresponding to the first width W1.

[0143] In this way, by making the guide slot 110 and the guide protrusion 350 have corresponding widths (W2=W1), an advantageous effect can be achieved in that abnormal movement (e.g., movement along the radial direction of the pressure vessel) and rotation of the guide protrusion 350 is suppressed while the guide protrusion 350 moves along the guide slot 110.

[0144] More preferably, the guide slot 110 is provided to have a first thickness T1 along the vertical direction (see FIG. 7), and the guide protrusion 350 is provided to have a second thickness T2 corresponding to the first thickness T1.

[0145] In this way, by making the guide slot 110 and the guide protrusion 350 have corresponding thicknesses (T1=T2), it is possible to obtain the advantageous effect of more effectively suppressing abnormal movement and rotation of the guide protrusion 350 while the guide protrusion 350 moves along the guide slot 110.

[0146] According to a preferred embodiment of the present invention, the pressure vessel fixing device 10 may include a restraining protrusion 360 disposed on the outer surface of the frame member 100 and provided at the end of the guide protrusion 350 so as to have a cross-sectional area larger than that of the guide slot 110.

[0147] As an example, the restraint protrusion 360 may be formed in the shape of an approximately square block having a length (length along the radial direction of the pressure vessel 20) longer than the first width W1 of the guide slot 110, and may be arranged on the outer surface of the frame member 100, unlike the second bracket 320 which is arranged on the inner surface of the frame member 100.

[0148] In this way, by providing a restraint protrusion 360 at the end of the guide protrusion 350 and supporting the restraint protrusion 360 on the outer surface of the frame member 100 (for example, the bottom surface based on Figure 5), it is possible to obtain the advantageous effect of preventing the second bracket 320 from moving up and down and separating from the frame member 100.

[0149] According to a preferred embodiment of the present invention, the pressure vessel fixing device 10 may include an elastic pad 370 interposed between the second side portion 26 and the support portion 310 .

[0150] The elastic pad 370 may be made of an elastic material such as elastically deformable rubber, silicon, or urethane, and the present invention is not limited or restricted by the material and characteristics of the elastic pad 370.

[0151] For example, the elastic pad 370 may be formed in a hollow ring shape corresponding to the inner surface of the support portion 310 .

[0152] In this way, by interposing the elastic pad 370 between the second side portion 26 and the support portion 310, it is possible to reduce vibrations transmitted from the frame member 100 to the pressure vessel 20 when vibrations occur (for example, when vibrations occur due to vehicle operation), and it is possible to obtain advantageous effects such as minimizing damage and deformation of the pressure vessel 20 due to contact with the support portion 310 when the pressure vessel 20 expands and contracts, and minimizing the generation of abnormal noise.

[0153] According to a preferred embodiment of the present invention, the pressure vessel fixing device 10 is provided on the frame member 100 and can include a mounting portion 120 on which the pressure vessel 20 is mounted.

[0154] The mounting portion 120 may be provided in various structures on which the pressure vessel 20 can be mounted, and the present invention is not limited or restricted by the structure of the mounting portion 120.

[0155] As an example, the mounting portion 120 may include a first mounting rib 122 provided on the frame member 100 and on which the main body portion 22 is placed, and a second mounting rib 124 provided on the frame member 100 at a distance from the first mounting rib 122 and on which the main body portion 22 is placed.

[0156] Preferably, the first mounting rib 122 includes a curved first mounting surface corresponding to the outer peripheral surface of the main body portion 22, and the second mounting rib 124 can include a curved second mounting surface corresponding to the outer peripheral surface of the main body portion 22, and the main body portion 22 can be in close contact with the first mounting surface and the second mounting surface.

[0157] In this way, by placing the outer peripheral surface of the main body portion 22 in close contact with the first and second placement surfaces, the placement state of the main body portion 22 can be maintained stably, and the advantageous effect of minimizing the movement and shaking of the main body portion 22 can be achieved.

[0158] According to another embodiment of the present invention, the pressure vessel may be configured to be placed using only one mounting rib having a length corresponding to the length of the main body portion, and the present invention is not limited or restricted by the number and structure of the mounting rib.

[0159] According to a preferred embodiment of the present invention, the pressure vessel fixing device 10 can include a first mounting pad 126 interposed between the main body portion 22 and the first mounting rib 122, and a second mounting pad 128 interposed between the main body portion 22 and the second mounting rib 124.

[0160] The first mounting pad 126 and the second mounting pad 128 may be formed of an elastic material such as elastically deformable rubber, silicone, or urethane, and the present invention is not limited or restricted by the material and characteristics of the first mounting pad 126 and the second mounting pad 128.

[0161] As an example, the first and second mounting pads 126, 128 can be formed with arcuate cross sections corresponding to the first and second mounting surfaces.

[0162] In this way, by interposing the first mounting pad 126 and the second mounting pad 128 between the first mounting rib 122 and the second mounting rib 124 and the main body portion 22, it is possible to mitigate vibrations transmitted from the frame member 100 (mounting portion) to the pressure vessel 20 when vibrations occur, thereby achieving the advantageous effect of minimizing damage and deformation of the pressure vessel 20 due to contact with the mounting portion 120 when the pressure vessel 20 expands and contracts, and minimizing the generation of abnormal noise.

[0163] 9 to 16, a pressure vessel fixing device 10' for fixing a pressure vessel 20' to an object according to a second embodiment of the present invention includes a first frame member 110' fixed to the object, a second frame member 120' fixed to the object and spaced apart from the first frame member 110', a first clamp body 212' provided to enclose a portion of the outer periphery of the pressure vessel 20', a first connecting portion 214' formed on one end of the first clamp body 212' and connected to the first frame member 110', and a first connecting portion 214' formed on the other end of the first clamp body 212' and configured to be movable toward and away from one surface of the second frame member 120'. a second clamp body 222' configured to surround another portion of the outer circumferential surface of the pressure vessel 20'; a second connecting portion 224' formed at one end of the second clamp body 222' and connected to the first frame member 110'; and a second clamp 220' configured to include a second connecting portion 226' formed at the other end of the second clamp body 222' and configured to be movable toward and away from the other surface of the second frame member 120'; and an elastic member 410' that elastically supports movement of the first connecting portion 216' and the second connecting portion 226' relative to the second frame member 120'.

[0164] For reference, the pressure vessel fixing device 10' according to the second embodiment of the present invention can be used to fix the pressure vessel 20' to various objects, and the present invention is not limited or restricted by the type and structure of the object to which the pressure vessel 20' is fixed.

[0165] For example, the pressure vessel fixing device 10' according to the second embodiment of the present invention can be used to fix a pressure vessel 20' inside a vehicle (eg, a passenger car or commercial vehicle).

[0166] High-pressure compressed hydrogen can be stored inside the pressure vessel 20'. For example, the pressure vessel 20' can include a liner (not shown), a carbon fiber layer (not shown) formed to encase the outer surface of the liner, and a glass fiber layer (not shown) formed to encase the outer surface of the carbon fiber layer, and the pressure vessel 20' can selectively expand or contract depending on the pressure of the hydrogen stored in the pressure vessel 20'.

[0167] The first frame member 110' is fixed to an object (for example, the body of a vehicle).

[0168] The structure and configuration of the first frame member 110' can be variously changed depending on the required conditions and design specifications, and the present invention is not limited or restricted by the structure and configuration of the first frame member 110'.

[0169] As an example, the first frame member 110' may be formed as a folded structure including a substantially "U"-shaped cross-section support portion (not shown), and both ends of the first frame member 110' may be fixed to the object using conventional fastening members.

[0170] The second frame member 120' is fixed to a target object (e.g., a vehicle body) at a distance from the first frame member 110', and a storage space is provided between the first frame member 110' and the second frame member 120' in which the pressure vessel 20' is placed.

[0171] The structure and shape of the second frame member 120' can be variously changed depending on the required conditions and design specifications, and the present invention is not limited or restricted by the structure and shape of the second frame member 120'. Preferably, the second frame member 120' can be formed to have the same structure as the first frame member 110'.

[0172] As an example, the second frame member 120' may be formed as a bent structure including a substantially "U"-shaped cross-section support portion (not shown), and both ends of the second frame member 120' may be fixed to the object using conventional fastening members.

[0173] Referring to Figures 9-11, a first clamp 210' and a second clamp 220' are provided to cooperate with each other to secure the pressure vessel 20' to the first frame member 110' and the second frame member 120'.

[0174] The number and spacing of the first clamps 210' and second clamps 220' can be varied depending on the required conditions and design specifications, and the present invention is not limited or restricted by the number and spacing of the first clamps 210' and second clamps 220'.

[0175] As an example, the pressure vessel 20' may be secured by two first clamps 210' and two second clamps 220' spaced apart from one another. According to other embodiments of the present invention, the pressure vessel securing device 10' may include only one first clamp 210' and one second clamp 220', or may include three or more first clamps 210' and two or more second clamps 220'.

[0176] More specifically, the first clamp 210' includes a first clamp body 212' provided to enclose a portion of the outer periphery of the pressure vessel 20', a first connecting portion 214' formed at one end of the first clamp body 212' and connected to the first frame member 110', and a first coupling portion 216' formed at the other end of the first clamp body 212' and movable toward and away from one surface of the second frame member 120'.

[0177] The material of the first clamp 210' may be variously changed depending on the required conditions and design specifications. For example, the first clamp 210' may be formed by continuously bending a strip-shaped member made of a metal material.

[0178] The first clamp body 212' may be provided to enclose a portion of the outer periphery of the pressure vessel 20'.

[0179] For example, the first clamp body 212' may be bent into a semicircular shape and may be tightly fitted around the outer periphery of the pressure vessel 20' corresponding to the upper section (see FIG. 9) of the pressure vessel 20'.

[0180] According to other embodiments of the present invention, the first clamp body 212' can be configured to wrap around a side section or other section of the pressure vessel 20'.

[0181] The first connecting portion 214' may be bent and integrally connected to one end of the first clamp body 212', and is connected to the first frame member 110'.

[0182] Here, the term "the first connecting portion 214' is connected to the first frame member 110'" is defined to include the first connecting portion 214' being fixed (e.g., fixed with a bolt or rivet) or rotatably connected to the first frame member 110'.

[0183] For example, the first connector 214' may be integrally connected (extended) to one end of the first clamp body 212'. According to another embodiment of the present invention, the first connector 214' may be coupled or assembled to one end of the first clamp body 212'.

[0184] The first coupling portion 216' may be bent and connected to the other end of the first clamp body 212' and is disposed to be movable toward and away from one surface (e.g., the upper surface) of the second frame member 120'.

[0185] Here, the movement of the first coupling part 216' in a direction approaching or moving away from one surface of the second frame member 120' may be defined as the movement of the first coupling part 216' from a position in contact with one surface of the second frame member 120' to a position away from it. For example, the first coupling part 216' may move in the vertical direction to a position approaching or moving away from the top surface of the second frame member 120'.

[0186] The second clamp 220' includes a second clamp body 222' provided to enclose another portion of the outer periphery of the pressure vessel 20', a second connecting portion 224' formed at one end of the second clamp body 222' and connected to the first frame member 110', and a second coupling portion 226' formed at the other end of the second clamp body 222' and movable toward and away from one surface of the second frame member 120'.

[0187] The material of the second clamp 220' may be variously changed depending on the required conditions and design specifications. For example, the second clamp 220' may be formed by continuously bending a strip-shaped member made of a metal material.

[0188] The second clamp body 222' may be provided to enclose a portion of the outer periphery of the pressure vessel 20'.

[0189] For example, the second clamp body 222' may be bent into a substantially semicircular shape and may closely enclose the outer periphery of the pressure vessel 20' corresponding to the lower section (see FIG. 9) of the pressure vessel 20'. According to other embodiments of the present invention, the second clamp body 222' may be configured to enclose a side section or other section of the pressure vessel 20'.

[0190] The second connecting portion 224' may be bent and integrally connected to one end of the second clamp body 222', and is connected to the first frame member 110'.

[0191] Here, the term "the second connecting portion 224' is connected to the first frame member 110'" is defined to include both the second connecting portion 224' being fixedly or rotatably connected to the first frame member 110'.

[0192] For example, the second connecting portion 224' may be integrally connected (extended) to one end of the second clamp body 222'. According to another embodiment of the present invention, the second connecting portion 224' may be coupled or assembled to one end of the second clamp body 222'.

[0193] The second coupling portion 226' may be bent and connected to the other end of the second clamp body 222' and is arranged to be movable toward and away from the other surface (e.g., bottom surface) of the second frame member 120'.

[0194] Here, the movement of the second coupling part 226' in a direction approaching or moving away from the other surface of the second frame member 120' may be defined as the movement of the second coupling part 226' from a position in contact with the other surface of the second frame member 120' to a position away from it. As an example, the second coupling part 226' may move in the vertical direction to a position approaching or moving away from the bottom surface of the second frame member 120'.

[0195] 12 to 15, the elastic member 410' is provided to elastically support the movement of the first coupling portion 216' and the second coupling portion 226' relative to the second frame member 120'.

[0196] The elastic member 410' may be provided in various structures capable of elastically supporting the movement of the first coupling portion 216' and the second coupling portion 226' relative to the second frame member 120', and the present invention is not limited or restricted by the type and arrangement of the elastic member 410'. As an example, the elastic member 410' may be formed to have a hollow cylindrical shape.

[0197] According to a preferred embodiment of the present invention, the pressure vessel fixing device 10' includes a first fastening member 310' that passes through the first connecting portion 216', the second frame member 120', and the second connecting portion 226', and a second fastening member 320' that is fastened to the first fastening member 310', and an elastic member 410' can be elastically deformably interposed between the second connecting portion 226' and the second fastening member 320'.

[0198] For example, a normal bolt may be used as the first fastening member 310', and a nut may be used as the second fastening member 320'.

[0199] Preferably, the pressure vessel fixing device 10' may include a first connecting hole 216a' formed in the first connecting portion 216', a through hole 122' formed in the second frame member 120', and a second connecting hole 226a' formed in the second connecting portion 226', and the first fastening member 310' may be fastened to the second fastening member 320' by passing through the first connecting hole 216a', the through hole 122', and the second connecting hole 226a' in that order.

[0200] The elastic member 410' is made of an elastic material that can be elastically deformed (compressively deformed). For example, the elastic member 410' may be made of at least one of elastically deformable rubber, silicone, and urethane.

[0201] According to other embodiments of the present invention, the elastic member 410' may be formed of other elastic materials, and the present invention is not limited or restricted by the type and characteristics of the elastic member 410'. Alternatively, a spring may be used as the elastic member 410'.

[0202] In this way, the second embodiment of the present invention allows the other end (first connecting portion 216') of the first clamp 210' and the other end (second connecting portion 226') of the second clamp 220' to elastically move toward and away from the second frame member 120'. Therefore, for example, when the pressure vessel 20 expands, the first connecting portion 216' can move upward and the second connecting portion 226' can move downward. This allows the upward displacement DF1 and downward displacement DF2 caused by the expansion and contraction of the pressure vessel 20' to be stably absorbed, thereby achieving the advantageous effect of improving safety and reliability.

[0203] However, in the second embodiment of the present invention, when the pressure vessel 20' expands, the first coupling part 216' moves upward and the second coupling part 226' moves downward, thereby enabling the expansion and contraction of the pressure vessel 20' to be guided as uniformly (without deflection) as possible in the upward and downward directions based on the center of the pressure vessel 20'. This minimizes the movement of the center of the pressure vessel 20' when the pressure vessel 20' expands and contracts, thereby achieving the advantageous effect of minimizing misalignment of the center of the pressure vessel 20' relative to the parts connected to the pressure vessel 20'.

[0204] Referring to Figure 16, according to a preferred embodiment of the present invention, the pressure vessel fixing device 10' may include a first hinge portion 112' provided on the first frame member 110' and to which the first connecting portion 214' is rotatably connected, and a second hinge portion 114' provided on the first frame member 110' and to which the second connecting portion 224' is rotatably connected.

[0205] The first hinge portion 112' may be formed in various structures to which the first connecting portion 214' can be rotatably connected, and the present invention is not limited or restricted by the structure of the first hinge portion 112'.

[0206] As an example, the first hinge portion 112' may include a first hinge axis 112a' connected to the first connecting portion 214' and a first hinge bracket 112b' provided on one surface (e.g., the top surface) of the first frame member 110' and rotatably supporting the first hinge axis 112a'.

[0207] For example, the first connecting portion 214' may be bent to wrap around the periphery of the first hinge shaft 112a', and the first hinge shaft 112a' may be rotatably housed inside the first connecting portion 214'.

[0208] As described above, in the second embodiment of the present invention, the first connecting portion 214' is rotatably connected to the first frame member 110' via the first hinge portion 112'. This allows the first clamp 210' to rotate as a whole relative to the first frame member 110' when the pressure vessel 20' expands, rather than only the first coupling portion 216' separating from the second frame member 120'. This provides the advantageous effect of more effectively absorbing displacement due to the expansion of the pressure vessel 20' and ensuring uniform expansion of the pressure vessel 20'.

[0209] The second hinge portion 114' may be formed in various structures to which the second connecting portion 224' can be rotatably connected, and the present invention is not limited or restricted by the structure of the second hinge portion 114'.

[0210] As an example, the second hinge portion 114' may include a second hinge axis 114a' connected to the second connecting portion 224' and a second hinge bracket 114b' provided on another surface (e.g., the bottom surface) of the first frame member 110' and rotatably supporting the second hinge axis 114a'.

[0211] For example, the second connecting portion 224' may be bent to wrap around the periphery of the second hinge shaft 114a', and the second hinge shaft 114a' may be rotatably housed inside the second connecting portion 224'.

[0212] As described above, in the second embodiment of the present invention, the second connecting portion 224' is rotatably connected to the first frame member 110' via the second hinge portion 114'. This allows the second clamp 220' to rotate as a whole relative to the first frame member 110' when the pressure vessel 20' expands, rather than only the second coupling portion 226' separating from the second frame member 120'. This provides the advantageous effect of more effectively absorbing displacement due to the expansion of the pressure vessel 20' and ensuring uniform expansion of the pressure vessel 20'.

[0213] According to a preferred embodiment of the present invention, the pressure vessel fixing device 10' may include a support member 420' interposed between the second coupling portion 226' and the second fastening member 320'.

[0214] The support member 420' may be provided in various structures capable of supporting the elastic member 410' between the second coupling portion 226' and the second fastening member 320', and the present invention is not limited or restricted by the structure and shape of the support member 420'.

[0215] As an example, the support member 420' has a receiving portion 420a' in which a portion of the elastic member 410' is partially received, and the remaining portion of the elastic member 410' may protrude outside the receiving portion 420a' between the second coupling portion 226' and the second fastening member 320'.

[0216] In this way, a portion of the elastic member 410' is accommodated in the accommodation portion 420a', and the remaining portion of the elastic member 410' protrudes outside the accommodation portion 420a' between the second coupling portion 226' and the second fastening member 320', thereby ensuring an elastic deformation section ΔL of the elastic member 410' to absorb displacements DF1 and DF2 of the pressure vessel 20'.

[0217] Preferably, the support member 420' may include a first support portion 422' having a first diameter, a second support portion 424' having a second diameter larger than the first diameter and cooperating with the first support portion 422' to form the receiving portion 420a', and a connecting ring portion 426' connecting one end of the first support portion 422' and the second support portion 424'.

[0218] The first support portion 422' may be formed in a hollow cylindrical shape having a first diameter, the second support portion 424' may be formed in a hollow cylindrical shape having a second diameter larger than the first diameter, and a substantially ring-shaped receiving portion 420a' may be provided between the first support portion 422' and the second support portion 424'.

[0219] More preferably, a surplus space 420b' may be provided between the inner wall surface of the receiving portion 420a' and the elastic member 410'.

[0220] In this way, when the elastic member 410' is accommodated inside the accommodating portion 420a', a clearance space 420b' is provided between the inner wall surface of the accommodating portion 420a' and the elastic member 410'. This ensures smooth compression of the elastic member 410' when the elastic member 410' is compressed, and can induce elastic deformation of the elastic member 410' uniformly throughout, thereby achieving the advantageous effect of more stably maintaining the positioning state of the elastic member 410' (the state in which the elastic member 410' supports the lower part of the second coupling portion 226').

[0221] The support member 420' can be made of various materials depending on the required conditions and design specifications, and the present invention is not limited or restricted by the material of the support member 420'.

[0222] According to a preferred embodiment of the present invention, the support member 420' may be made of a rigid, non-elastic material.

[0223] For example, the support member 420' may be made of one or more of plastic, engineering plastic, and metal. In some cases, the support member 420' may be made of other non-elastic materials.

[0224] In this way, by forming the support member 420' from a rigid, non-elastic material, the positioning state of the elastic member 410' can be stably maintained, and advantageous effects can be obtained such that deformation (e.g., distortion) of the elastic member 410' due to fastening of the second fastening member 320' is minimized.

[0225] Preferably, the elastic member 410' may be integrally formed with the support member 420' by double injection molding. According to another embodiment of the present invention, the elastic member 410' and the support member 420' may be formed separately, and then the elastic member 410' may be disposed inside the support member 420'.

[0226] According to a preferred embodiment of the present invention, the pressure vessel fixing device 10' may include a first elastic pad 218' interposed between the pressure vessel 20' and the first clamp body 212', and a second elastic pad 228' interposed between the pressure vessel 20' and the second clamp body 222'.

[0227] For example, the first elastic pad 218' and the second elastic pad 228' may be made of an elastic material such as rubber, silicone, or urethane.

[0228] By providing the first elastic pad 218' between the outer circumferential surface of the pressure vessel 20' and the first clamp body 212' and the second elastic pad 228' between the outer circumferential surface of the pressure vessel 20' and the second clamp body 222' in this way, it is possible to obtain advantageous effects such as minimizing damage and deformation of the pressure vessel 20' caused by the first clamp body 212' and the second clamp body 222' when the pressure vessel 20' expands and contracts, and minimizing the generation of abnormal noise.

[0229] 17 to 23, a pressure vessel fixing device 10″ for fixing a pressure vessel 20″ to an object according to the third embodiment of the present invention includes a frame portion 100″ fixed to the object, a first clamp 210″ supported by the frame portion 100″ and provided to enclose a portion of the outer periphery of the pressure vessel 20″, a second clamp 220″ supported by the frame portion 100″ and provided to enclose another portion of the outer periphery of the pressure vessel 20″, a first fastening member 310″ rotatably mounted on the first clamp 210″, and a second fastening member 320″ connected to the second clamp 220″ and fastened to the first fastening member 310″ so as to be linearly movable along the length direction of the first fastening member 310″ in response to the rotation of the first fastening member 310″.

[0230] For reference, the pressure vessel fixing device 10" according to the third embodiment of the present invention can be used to fix the pressure vessel 20" to various objects, and the present invention is not limited or restricted by the type and structure of the object to which the pressure vessel 20" is fixed.

[0231] For example, the pressure vessel fixing device 10" according to the third embodiment of the present invention can be used to fix a pressure vessel 20" inside a vehicle (eg, a passenger car or commercial vehicle).

[0232] High-pressure compressed hydrogen can be stored inside the pressure vessel 20″. As an example, the pressure vessel 20″ can include a liner (not shown), a carbon fiber layer (not shown) formed to encase the outer surface of the liner, and a glass fiber layer (not shown) formed to encase the outer surface of the carbon fiber layer, and the pressure vessel 20″ can selectively expand or contract depending on the pressure of the hydrogen stored in the pressure vessel 20″.

[0233] The frame portion 100'' is provided to fix the pressure vessel 20'' to an object (for example, the body of a vehicle) via a first clamp 210'' and a second clamp 220''.

[0234] The frame portion 100'' can be provided in various structures capable of fixing the pressure vessel 20'' to the object, and the present invention is not limited or restricted by the structure of the frame portion 100''.

[0235] For example, the frame unit 100'' may include a first frame member 110'' fixed to the object, and a second frame member 120'' spaced apart from the first frame member 110'' and fixed to the object.

[0236] The first frame member 110'' is fixed to an object (for example, the body of a vehicle).

[0237] The structure and configuration of the first frame member 110" can be variously changed depending on the required conditions and design specifications, and the present invention is not limited or restricted by the structure and configuration of the first frame member 110".

[0238] As an example, the first frame member 110" may be formed as a folded structure including a generally "U"-shaped cross-section rest (not shown), and both ends of the first frame member 110" may be fixed to the object using conventional fasteners.

[0239] The second frame member 120'' is fixed to a target object (e.g., a vehicle body) at a distance from the first frame member 110'', and a storage space is provided between the first frame member 110'' and the second frame member 120'' in which the pressure vessel 20'' is placed.

[0240] The structure and shape of the second frame member 120" can be variously changed depending on the required conditions and design specifications, and the present invention is not limited or restricted by the structure and shape of the second frame member 120". Preferably, the second frame member 120" can be formed to have the same structure as the first frame member 110".

[0241] As an example, the second frame member 120" may be formed as a folded structure including a generally "U"-shaped cross-section rest (not shown), and both ends of the second frame member 120" may be fixed to the object using conventional fasteners.

[0242] Referring to Figures 17-20, a first clamp 210'' and a second clamp 220'' are provided to cooperate with each other to secure the pressure vessel 20'' to the first frame member 110'' and the second frame member 120''.

[0243] The number and spacing of the first clamps 210" and the second clamps 220" can be varied depending on the required conditions and design specifications, and the present invention is not limited or restricted by the number and spacing of the first clamps 210" and the second clamps 220".

[0244] As an example, pressure vessel 20" can be secured by only one first clamp 210" and one second clamp 220". According to other embodiments of the present invention, the pressure vessel securing device can include two or more first clamps and two or more second clamps.

[0245] More specifically, the first clamp 210″ may include a first clamp body 212″ provided to surround a portion of the outer circumferential surface of the pressure vessel 20″, a first connecting portion 214″ formed at one end of the first clamp body 212″ and connected to the first frame member 110″, and a first extension portion 216″ extending to the other end of the first clamp body 212″.

[0246] The material of the first clamp 210" may be variously changed depending on the required conditions and design specifications. For example, the first clamp 210" may be formed by continuously bending a strip-shaped member made of a metal material.

[0247] The first clamp body 212'' may be provided to surround a partial section of the outer periphery of the pressure vessel 20''.

[0248] For example, the first clamp body 212″ may be bent into a substantially semicircular shape and may be tightly fitted around the outer circumferential surface of the pressure vessel 20″ corresponding to the upper section (see FIG. 19) of the pressure vessel 20″.

[0249] According to other embodiments of the present invention, the first clamp body may be configured to encase a side section or other section of the pressure vessel.

[0250] The first connecting portion 214'' may be bent and integrally connected to one end of the first clamp body 212'', and is connected to the first frame member 110''.

[0251] Here, the term "the first connecting portion 214" being connected to the first frame member 110" is defined to include all cases in which the first connecting portion 214" is fixed (e.g., fixed with a bolt or rivet) or rotatably connected to the first frame member 110".

[0252] As an example, the first connecting portion 214" may be integrally connected (extended) to one end of the first clamp body 212". According to another embodiment of the present invention, the first connecting portion may be coupled or assembled to one end of the first clamp body.

[0253] The first extension portion 216'' is bent onto the other end of the first clamp body 212'' and extends integrally therewith.

[0254] The first extension 216" can be provided in various structures capable of rotatably supporting the first fastening member 310", and the present invention is not limited or restricted by the structure of the first extension 216".

[0255] For example, the first extension 216" may extend integrally with the other end of the first clamp body 212" so as to protrude along the radial direction of the first clamp body 212".

[0256] The second clamp 220″ includes a second clamp body 222″ provided to surround another portion of the outer periphery of the pressure vessel 20″, a second connecting portion 224″ formed at one end of the second clamp body 222″ and connected to the first frame member 110″, and a second extension portion 226″ extending to the other end of the second clamp body 222″.

[0257] The material of the second clamp 220" may be variously changed depending on the required conditions and design specifications. For example, the second clamp 220" may be formed by continuously bending a strip-shaped member made of a metal material.

[0258] The second clamp body 222'' may be provided to surround a portion of the outer periphery of the pressure vessel 20''.

[0259] For example, the second clamp body 222″ may be bent into a generally semicircular shape and may be tightly fitted around the outer periphery of the pressure vessel 20″ corresponding to the lower section (see FIG. 17) of the pressure vessel 20″. According to other embodiments of the present invention, the second clamp body may be configured to fit around a side section or other section of the pressure vessel.

[0260] The second connecting portion 224'' may be bent and integrally connected to one end of the second clamp body 222'', and is connected to the first frame member 110''.

[0261] Here, the term "the second connecting portion 224" being connected to the first frame member 110" is defined to include both cases where the second connecting portion 224" is fixedly or rotatably connected to the first frame member 110".

[0262] As an example, the second connecting portion 224" may be integrally connected (extended") to one end of the second clamp body 222". According to other embodiments of the present invention, the second connecting portion may be coupled or assembled to one end of the second clamp body.

[0263] The second extension portion 226'' is bent onto the other end of the second clamp body 222'' and extends integrally therewith.

[0264] The second extension 226" can be provided in various structures capable of fixing (or connecting) the second fastening member 320", and the present invention is not limited or restricted by the structure of the second extension 226".

[0265] For example, the second extension 226" may extend integrally with the other end of the second clamp body 222" so as to protrude along the radial direction of the second clamp body 222".

[0266] The first fastening member 310″ and the second fastening member 320″ are configured to selectively move the first clamp 210″ relative to the second clamp 220″ (moving the first clamp 210″ and the second clamp 220″ in directions in which the first clamp 210″ and the second clamp 220″ move toward and away from each other) while applying a fastening force that fastens the pressure vessel 20″, and the distance L between the first extension portion 216″ and the second extension portion 226″ can be varied in response to the linear movement of the second fastening member 320″ caused by the rotation of the first fastening member 310″.

[0267] More specifically, the first fastening member 310″ is rotatably mounted on the first extension 216″ of the first clamp 210″. The second fastening member 320″ is connected to the second extension 226″ of the second clamp 220″ and is fastened to the first fastening member 310″ so as to be linearly movable along the length of the fastening member in response to the rotation of the first fastening member 310″.

[0268] The direction of linear movement of the second fastening member 320" caused by the rotation of the first fastening member 310" can be realized in various ways depending on required conditions and design specifications.

[0269] For example, when the first fastening member 310″ rotates in a first direction (e.g., clockwise), the second extension 226″ to which the second fastening member 320″ is fixed can move in a direction toward the first extension 216″ (downward in FIG. 18). Conversely, when the first fastening member 310″ rotates in a second direction (e.g., counterclockwise), the second extension 226″ to which the fastening member is fixed can move in a direction away from the first extension 216″ (upward in FIG. 18).

[0270] The first fastening member 310″ and the second fastening member 320″ may be any of a variety of members capable of converting the rotation of the first fastening member 310″ into the linear motion of the second fastening member 320″, and the present invention is not limited or restricted by the type and structure of the first fastening member 310″ and the second fastening member 320″.

[0271] For example, the first fastening member 310'' may be a normal bolt, and the second fastening member 320'' may be a nut.

[0272] According to a preferred embodiment of the present invention, the first fastening member 310″ may include a shaft portion 312″ having a thread (not shown) formed on its outer circumferential surface to which the second fastening member 320″ is threadably coupled, and a support portion 314″ that supports the shaft portion 312″ on the first extension portion 216″.

[0273] The shaft portion 312″ may be provided in the form of a straight rod having a predetermined length and a circular cross section, and the second fastening member 320″ may be threadedly coupled to the end of the shaft portion 312″ that passes through the through hole 226a″ formed in the second extension portion 226″.

[0274] The support portion 314" can be formed in various structures capable of supporting the shaft portion 312" on the first extension portion 216", and the present invention is not limited or restricted by the structure of the support portion 314".

[0275] As an example, the support portion 314″ may include a first flange 314a″ formed on the shaft portion 312″ to have a cross-sectional area (e.g., an expanded diameter) larger than that of the shaft portion 312″ and supported on one side of the first extension portion 216″, and a second flange 314b″ spaced apart from the first flange 314a″, formed on the shaft portion 312″ to have a cross-sectional area (e.g., an expanded diameter) larger than that of the shaft portion 312″, and supported on another side of the first extension portion 216″.

[0276] The first flange 314a'' and the second flange 314b'' are arranged on both sides of the first extension portion 216'' (top and bottom surfaces, based on Figure 18) with the first extension portion 216'' in between, thereby enabling the shaft portion 312'' to be supported (fixed) to the first extension portion 216''.

[0277] Preferably, the first extension portion 216'' may be provided with a support hole 216a'' in which the shaft portion 312'' is received.

[0278] More preferably, the support hole 216a″ may be formed to have an entrance (opening”) (not shown) smaller in diameter than the shaft portion 312″, and the shaft portion 312″ may be received inside the support hole 216a″ in a snap-fit ​​manner through the entrance of the support hole 216a″.

[0279] In this way, by accommodating the shaft portion 312'' in the support hole 216a'', movement of the shaft portion 312'' relative to the first extension portion 216'' (for example, horizontal movement with reference to Figure 18) is suppressed, which has the advantageous effect of maintaining the positioning state of the shaft portion 312'' more stably.

[0280] Referring to FIG. 21, according to a preferred embodiment of the present invention, the pressure vessel fixing device 10″ may include a through hole 122″ formed through the frame portion 100″ and in which the shaft portion 312″ is disposed, and an accommodating hole 124″ formed through the frame portion 100″ and in which the first clamp body 212″ and the second clamp body 222″ are accommodated.

[0281] The through-holes 122" can be provided in various structures depending on the required conditions and design specifications, and the structure and form of the through-holes 122" do not limit or restrict the present invention.

[0282] For example, the through-hole 122'' may be formed by partially removing a portion of the outer surface of the second frame member, and the shaft 312'' may be accommodated inside the through-hole 122''.

[0283] In this way, by forming a through hole 122'' in the second frame member and accommodating the shaft portion 312'' inside the through hole 122'', it is not necessary to extend the first extension portion 216'' and the second extension portion 226'' to a position where they protrude outside the second frame member (outside the side surface), so it is possible to manufacture the first extension portion 216'' and the second extension portion 226'' in a smaller size, which has the advantageous effect of improving space utilization and design freedom.

[0284] Furthermore, by rotatably accommodating the shaft portion 312'' inside the through-hole 122'', an advantageous effect can be obtained in which the rotation of the shaft portion 312'' is more stably supported.

[0285] The receiving hole 124" can be provided in various structures depending on the required conditions and design specifications, and the present invention is not limited or restricted by the structure and form of the receiving hole 124".

[0286] As an example, the receiving hole 124" may be formed by partially removing a portion of the inner surface of the second frame member, and the first clamp body and the second clamp body may be partially received inside the receiving hole 124".

[0287] In this manner, by forming the receiving hole 124″ in the second frame member and accommodating the first clamp body and the second clamp body inside the receiving hole 124″, the distance between the pressure vessel 20″ and the second frame member can be minimized, and the second frame member can be disposed so as to be in closer contact with the outer surface of the pressure vessel 20″, which advantageously improves space utilization and design flexibility.

[0288] The second fastening member 320″ can be connected to the second extension portion 226″ in various ways depending on the required conditions and design specifications, and the present invention is not limited or restricted by the connection structure between the second fastening member 320″ and the second extension portion 226″.

[0289] As an example, the second fastening member 320" can be integrally secured to the second extension 226" by welding. According to other embodiments of the present invention, a separate member can be used to couple (or fasten) or attach the second fastening member to the second extension.

[0290] As described above, according to the third embodiment of the present invention, the second fastening member 320″ moves linearly along the length of the first fastening member 310″ in response to the rotation of the first fastening member 310″, thereby allowing the first clamp 210″ and the second clamp 220″ to move toward and away from each other (the first clamp and the second clamp all move relative to the pressure vessel). This allows displacement due to expansion and contraction of the pressure vessel 20″ to be stably absorbed, resulting in the advantageous effect of improving safety and reliability.

[0291] For example, when the pressure vessel 20" expands, the first clamp 210" moves upward (see Figure 19) and the second clamp 220" moves downward based on the pressure vessel 20", thereby stably absorbing the upward displacement DF1 and downward displacement DF2 caused by the expansion and contraction of the pressure vessel 20", thereby achieving the advantageous effect of improving safety and reliability.

[0292] Furthermore, according to the third embodiment of the present invention, when the pressure vessel 20″ is expanded, the first clamp 210″ moves upward and the second clamp 220″ moves downward relative to the pressure vessel 20″. This allows the expansion and contraction of the pressure vessel 20″ to be guided as uniformly (without deflection) in the upward and downward directions relative to the center of the pressure vessel 20″. This minimizes the movement of the center of the pressure vessel 20″ when the pressure vessel 20″ is expanded and contracted, thereby achieving the advantageous effect of minimizing misalignment of the center of the pressure vessel 20″ with respect to components connected to the pressure vessel 20″.

[0293] Furthermore, according to the third embodiment of the present invention, the second fastening member 320″ is adapted to move linearly along the length of the first fastening member 310″ in response to the rotation of the first fastening member 310″, so that the first clamp 210″ and the second clamp 220″ can be moved toward and away from each other (the first clamp and the second clamp all move relative to the pressure vessel) in response to the expansion and contraction of the pressure vessel 20″, thereby making it possible to selectively adjust the fastening force of the first clamp 210″ and the second clamp 220″.

[0294] Therefore, the clamping force of the first clamp 210″ and the second clamp 220″ can be adjusted according to the amount of hydrogen charged (used amount″), so that the clamping force of the first clamp 210″ and the second clamp 220″ can be maintained constant regardless of the expansion and contraction of the pressure vessel 20″, thereby achieving the advantageous effect of maintaining the clamped state of the pressure vessel 20″ more stably.

[0295] 18 and 22, according to a preferred embodiment of the present invention, the pressure vessel fixing device 10″ can include a drive portion 400″ provided on the frame portion 100″ and providing a driving force for rotating the first fastening member 310″.

[0296] The driving unit 400″ may be any conventional driving means capable of providing a driving force for rotating the first fastening member 310″, and the present invention is not limited or restricted by the type and structure of the driving unit 400″.

[0297] For example, a normal motor may be used as the driving unit 400'', and the driving unit 400'' may be supported by the second frame member 120''.

[0298] The drive unit 400" can be supported on the second frame member 120" in various ways depending on the required conditions and design specifications. As an example, the pressure vessel fixing device 10" can include a bracket 410" that is connected to the second frame member 120", and the drive unit 400" can be press-fitted into the bracket 410" to be fixed.

[0299] The bracket 410" can be provided in various structures capable of fixing the driving unit 400", and the present invention is not limited or restricted by the structure of the bracket 410".

[0300] According to a preferred embodiment of the present invention, the pressure vessel fixing device 10'' may include a coupler 420'' that connects the driving unit 400'' and the first fastening member 310'' and transmits the driving force of the driving unit 400'' through the first fastening member 310''.

[0301] The coupler 420'' may be provided in various structures capable of transmitting the driving force of the driving unit 400'' to the first fastening member 310''.

[0302] For example, the coupler 420″ may include a coupler body 422″ and a fastening hole 424″ formed in the coupler body 422″ to have a non-circular cross-sectional shape, with one end to which the first fastening member 310″ is coupled and the other end to which the driver 400″ is coupled.

[0303] For example, the fastening hole 424″ may be formed to have a spline cross-section, and the first fastening member 310″ may be integrally connected to one end of the fastening hole 424″, and the driving unit 400″ (rotating shaft of the motor) may be integrally connected to the other end of the fastening hole 424″.

[0304] Meanwhile, according to a preferred embodiment of the present invention, the pressure vessel fixing device 10" may include a control unit (not shown) that selectively controls the operation of the drive unit 400".

[0305] Preferably, the control unit can control the operation of the drive unit 400'' (for example, control the direction of rotation, control the amount of rotation) according to the amount of hydrogen charged (amount used'') in the pressure vessel 20''.

[0306] For example, the controller may be a central processing unit (CPU) or a semiconductor device that executes processing based on instructions stored in memory and / or storage. The memory and storage may include various volatile or non-volatile storage media. For example, the memory may include a read-only memory (ROM) and a random access memory (RAM).

[0307] Meanwhile, referring to FIG. 23, according to a preferred embodiment of the present invention, a pressure vessel fixing device 10″ may include a first hinge portion 112″ provided on a first frame member 110″ and to which a first connecting portion 214″ is rotatably connected, and a second hinge portion 114″ provided on the first frame member 110″ and to which a second connecting portion 224″ is rotatably connected.

[0308] The first hinge portion 112″ may be formed in various structures to which the first connecting portion 214″ can be rotatably connected, and the present invention is not limited or restricted by the structure of the first hinge portion 112″.

[0309] As an example, the first hinge portion 112'' may include a first hinge shaft 112a'' connected to the first connecting portion 214'' and a first hinge bracket 112b'' provided on one surface (e.g., the top surface) of the first frame member 110'' and rotatably supporting the first hinge shaft 112a''.

[0310] For example, the first connecting portion 214'' may be bent to wrap around the periphery of the first hinge shaft 112a'', and the first hinge shaft 112a'' may be rotatably housed inside the first connecting portion 214''.

[0311] As described above, in the third embodiment of the present invention, the first connecting portion 214″ is rotatably connected to the first frame member 110″ via the first hinge portion 112″. This allows the first clamp 210″ to rotate as a whole relative to the first frame member 110″ when the pressure vessel 20″ expands, rather than only the first extension portion 216″ moving away from the second frame member 120″. This advantageously absorbs displacement due to the expansion of the pressure vessel 20″ more effectively, ensuring uniform expansion of the pressure vessel 20″.

[0312] The second hinge portion 114″ may be formed in various structures to which the second connecting portion 224″ can be rotatably connected, and the present invention is not limited or restricted by the structure of the second hinge portion 114″.

[0313] As an example, the second hinge portion 114'' may include a second hinge axis 114a'' connected to the second connecting portion 224'' and a second hinge bracket 114b'' provided on another surface (e.g., the bottom surface) of the first frame member 110'' and rotatably supporting the second hinge axis 114a''.

[0314] For example, the second connecting portion 224'' may be bent to wrap around the periphery of the second hinge shaft 114a'', and the second hinge shaft 114a'' may be rotatably housed inside the second connecting portion 224''.

[0315] As described above, in the third embodiment of the present invention, the second connecting portion 224″ is rotatably connected to the first frame member 110″ via the second hinge portion 114″. This allows the second clamp 220″ to rotate as a whole relative to the first frame member 110″ when the pressure vessel 20″ expands, rather than only the second extension portion 226″ moving away from the second frame member 120″. This advantageously absorbs displacement due to the expansion of the pressure vessel 20″ more effectively, ensuring uniform expansion of the pressure vessel 20″.

[0316] 17 to 19, according to a preferred embodiment of the present invention, the pressure vessel fixing device 10″ may include a first elastic pad 218″ interposed between the pressure vessel 20″ and a first clamp 210″ (e.g., a first clamp body), and a second elastic pad 228″ interposed between the pressure vessel 20″ and a second clamp 220″ (e.g., a second clamp body).

[0317] For example, the first elastic pad 218'' and the second elastic pad 228'' may be made of an elastic material such as rubber, silicone, or urethane.

[0318] By providing the first elastic pad 218" between the outer circumferential surface of the pressure vessel 20" and the first clamp 210" and the second elastic pad 228" between the outer circumferential surface of the pressure vessel 20" and the second clamp 220", damage and deformation of the pressure vessel 20" caused by the first clamp 210" and the second clamp 220" during expansion and contraction of the pressure vessel 20" can be minimized, and the generation of abnormal noise can be advantageously minimized.

[0319] As described above, the embodiments of the present invention provide advantageous effects of simplifying the structure, improving design freedom, and improving space utilization.

[0320] In particular, according to the first embodiment of the present invention, the height (thickness) of the structure for fixing the pressure vessel and the overall height (thickness along the radial direction of the pressure vessel) of the power pack module to which the pressure vessel is applied can be reduced, thereby achieving the advantageous effect of contributing to the miniaturization of the power pack module.

[0321] Furthermore, according to the first embodiment of the present invention, it is possible to obtain the advantageous effect of ensuring smooth expansion and contraction of the pressure vessel and uniformly guiding the expansion and contraction of the pressure vessel in all directions based on the center of the pressure vessel.

[0322] Furthermore, according to the first embodiment of the present invention, it is possible to obtain advantageous effects such as improved structural rigidity, safety, and reliability.

[0323] Furthermore, according to the second embodiment of the present invention, displacement due to expansion and contraction of the pressure vessel can be stably absorbed, which has the advantageous effect of improving safety and reliability.

[0324] Furthermore, according to the second embodiment of the present invention, the expansion and contraction of the pressure vessel can be uniformly induced in the upward and downward directions based on the center of the pressure vessel, thereby achieving the advantageous effect of minimizing the movement of the center of the pressure vessel when the pressure vessel expands and contracts.

[0325] Furthermore, the second embodiment of the present invention has the advantageous effect of minimizing misalignment of the pressure vessel with respect to components connected to the pressure vessel.

[0326] Furthermore, according to the second embodiment of the present invention, advantageous effects of improving structural rigidity and durability can be obtained.

[0327] According to the third embodiment of the present invention, displacement due to expansion and contraction of the pressure vessel can be stably absorbed, and advantageous effects of improving safety and reliability can be obtained.

[0328] Furthermore, according to the third embodiment of the present invention, the expansion and contraction of the pressure vessel can be uniformly guided in the upward and downward directions based on the center of the pressure vessel, thereby achieving the advantageous effect of minimizing the movement of the center of the pressure vessel when the pressure vessel expands and contracts.

[0329] Furthermore, the third embodiment of the present invention has the advantageous effect of minimizing misalignment of the pressure vessel with respect to components connected to the pressure vessel.

[0330] Furthermore, according to the third embodiment of the present invention, advantageous effects of improving structural rigidity and durability can be obtained.

[0331] Furthermore, according to the third embodiment of the present invention, the clamping force applied by the clamp can be maintained constant regardless of the expansion and contraction of the pressure vessel, thereby achieving the advantageous effect of stably maintaining the clamped state of the pressure vessel.

[0332] The above description focuses on the embodiments, but these are merely examples and do not limit the present invention. Those skilled in the art will recognize that various modifications and applications not exemplified above are possible within the scope of the essential characteristics of the present invention. For example, each component specifically illustrated in the embodiments may be modified and implemented. Furthermore, differences related to such modifications and applications should be construed as being included within the scope of the present invention as defined by the appended claims. [Explanation of symbols]

[0333] 10 Pressure vessel fixing device 20 Pressure Vessels 22 Main body 24 First side section 24a Tap section 26 Second side section 100 Frame member 104a 1st reference hole 104b 2nd reference hole 110 Guide slot 120 Placement section 122 First mounting rib 124 Second mounting rib 126 First mounting pad 128 Second mounting pad 112 Inclined guide section 200 1st restraint section 210 First Bracket 212 1st fastening hole 214a First mounting hole 214b Second mounting hole 220 First fastening member 230 First fixing member 240 Second fixing member 300 2nd restraint section 310 Support part 320 Second Bracket 322 2nd fastening hole 330 Fastening part 332 Binding hole 340 Second fastening member 350 Guide protrusion 360 Restriction protrusion 370 Elastic Pad

Claims

1. A pressure vessel fixing device for fixing a pressure vessel to an object, comprising: a frame member fixed to the object; a first restraining portion that restrains one end of the pressure vessel along the axial direction to the frame member; a second restraining portion that restrains another axial end of the pressure vessel to the frame member, the pressure vessel includes a main body portion, a first side portion formed at one end of the main body portion to have a dome shape, and a second side portion formed at the other end of the main body portion to have a dome shape; the first restraining portion restrains the first side portion to the frame member, the second restraining portion restrains the second side portion to the frame member, the second restraint portion includes a support portion that supports an outer surface of the second side portion, a second bracket that supports the support portion on the frame member, a guide slot that is formed in the frame member along the length direction of the pressure vessel, and a guide protrusion that is connected to the second bracket and linearly movably accommodated in the guide slot, A pressure vessel fixing device including an inclined guide portion formed at an opening of the guide slot for guiding the entry of the guide protrusion.

2. The first side portion is provided with a tap portion, The pressure vessel fixing device according to claim 1 , wherein the first restraining portion restrains the tap portion to the frame member.

3. The first restraint portion is a first bracket having a first fastening hole corresponding to the tap portion and fixed to the frame member; The pressure vessel fixing device according to claim 2 , further comprising: a first fastening member fastened to the first fastening hole and the tap portion.

4. a first reference hole formed in the frame member; a first mounting hole formed in the first bracket corresponding to the first reference hole; a first fixing member fastened to the first reference hole and the first mounting hole; a second reference hole formed in the frame member at a distance from the first reference hole; a second mounting hole formed in the first bracket corresponding to the second reference hole; The pressure vessel fixing device according to claim 3 , further comprising: a second fixing member fastened to the second reference hole and the second mounting hole.

5. the first reference hole is provided to have a first length along a radial direction of the pressure vessel, The pressure vessel fixing device according to claim 4 , wherein the second reference hole is provided to have a second length along the radial direction of the pressure vessel that is longer than the first length.

6. The second restraint portion is a second fastening hole formed in the second bracket; a fastening portion provided on the frame member, the fastening portion having a coupling hole corresponding to the second fastening hole; The pressure vessel fixing device according to claim 1 , further comprising: a second fastening member fastened to the second fastening hole and the coupling hole.

7. the guide slot is provided to have a first width along a radial direction of the pressure vessel; The pressure vessel fixing device according to claim 1 , wherein the guide projection is provided to have a second width corresponding to the first width.

8. The guide slot is provided to have a first thickness along a vertical direction, The pressure vessel fixing device according to claim 1 , wherein the guide projection is provided to have a second thickness corresponding to the first thickness.

9. 2. The pressure vessel securing device according to claim 1, further comprising a restraining projection disposed on an outer surface of said frame member and provided at an end of said guide projection so as to have a cross-sectional area larger than that of said guide slot.

10. The pressure vessel fixing device according to claim 1 , wherein the support portion is provided in the shape of a ring that partially surrounds the outer surface of the second side portion.

11. 2. The pressure vessel securing device of claim 1, further comprising an elastic pad interposed between the second side portion and the support portion.

12. The pressure vessel fixing device according to claim 1 , further comprising a mounting portion provided on the frame member, on which the pressure vessel is mounted.

13. The placement section is a first mounting rib provided on the frame member, on which the main body is mounted; The pressure vessel fixing device according to claim 12 , further comprising a second mounting rib provided on the frame member spaced apart from the first mounting rib, on which the main body portion is mounted.

14. the first mounting rib includes a first mounting surface to which an outer peripheral surface of the main body portion comes into close contact, The pressure vessel fixing device according to claim 13 , wherein the second mounting rib includes a second mounting surface that comes into close contact with an outer circumferential surface of the main body portion.

15. a first mounting pad interposed between the main body portion and the first mounting rib; 14. The pressure vessel securing device of claim 13, further comprising a second mounting pad interposed between the body portion and the second mounting rib.

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