TWI871794B - Gas cylinder holder - Google Patents

Abstract

A gas cylinder holder is used to solve the problem of easily falling of the conventional gas cylinder. The gas cylinder holder includes a strap; a fixing plate made of a solid material, the fixing plate having a first slit, a second slit and a third slit, which are used for the strap to pass through; an adjuster having a first groove, a second groove and a third groove, which are used for the strap to pass through, and a connecting ring having a pivot shaft and two side parts, the adjuster pivots on the pivot shaft; and a carrier plate having two opposite sets of mating holes, which are used for the strap to pass through. The present invention has the effect of preventing the diving cylinder from falling off.

Description

Gas cylinder fixing device

The present invention relates to a gas cylinder fixing device, in particular to a belt and buckle for fixing a gas cylinder.

According to the law, divers, firefighters or other personnel who must carry self-contained breathing gas usually have to carry a gas cylinder by themselves in order to stay in an oxygen-deficient environment for a long time. The gas cylinder is usually fixed on the diving suit, backpack or harness used by the person carrying the gas cylinder. If the gas cylinder is not firmly fixed on the equipment of the person carrying the gas cylinder and falls, it will immediately cause life-threatening danger to the person who must carry the self-contained breathing gas. Since the shape of the gas cylinder is usually cylindrical, how to firmly fix the cylindrical gas cylinder on the equipment of the person carrying the gas cylinder has been repeatedly studied and improved by industry personnel.

Please refer to the first figure, which discloses a ratchet adjustable belt and buckle assembly for fixing a gas cylinder on a backpack. One end of two belts 9a and 9b are fixed to a backpack 90 respectively, and the other end of one belt 9a is connected to a buckle 91, and the buckle 91 has a ratchet claw 92. The other end of the other belt 9b has a saw tooth 93. When fixing a gas cylinder 94 on the backpack 90, the gas cylinder 94 is first placed in the desired position, and then the buckle 91 is opened to the longest position, and then one end of the belt 9b with the saw tooth 93 is placed in the receiving end of the buckle 91, and one end of the saw tooth 93 is abutted by the ratchet claw 92 of the buckle 91 until it is fastened. Then the buckle 91 is moved to cover to the locking position, and the end of the belt 9b below it is tightened and fixed. It has been disclosed by U.S. Patent Publication No. 2009/0178256A1 "Ratchet adjustable strap and buckle assembly for securing a gas cylinder to a backpack".

The adjustable belt and buckle assembly disclosed above only requires inserting one end of the belt 9b with the saw teeth 93 into the receiving end of the buckle 91, so that the end with the saw teeth 93 is abutted by the ratchet claw 92 of the buckle 91. Since the diameter of the gas cylinder 94 has a variety of different specifications and sizes, when inserting one end of the belt 9b with the saw teeth 93 into the receiving end of the buckle 91, it is impossible to apply force to tightly encircle the two belts 9a and 9b around the outer wall of the gas cylinder 94, so that the ratchet claw 92 cannot abut on the part of the saw teeth 93 that can be tightly fastened. Thus, the two straps 9a, 9b cannot securely fix the gas cylinder 94 to the backpack 90. In further cases, the gas cylinder 94 may fall off the equipment of the person carrying the gas cylinder, thereby causing immediate danger to the life of the person who must carry the self-contained breathing gas.

Please refer to the second figure, which discloses another conventional gas cylinder fixing device, the fixing device comprising: a belt 80 arranged to be connected to a device 81 when in use, and the fixing portion 80a of the belt 80 surrounds at least a portion of the gas cylinder 82; a tension adjuster 83 is used to tighten the belt 80 around the fixing portion 80a of the gas cylinder 82 so that the gas cylinder 82 is retained on the device 81, and the free end 80c of the belt 80 is connected to the device 81. The belt 80 has three slits 83a, 83b, and 83c passing through the tension adjuster 83; a fixing buckle 84 includes a positioning slit 84a, a fixing slit 84b, and a pivot component 84c. The fixing portion 80a of the belt 80 passes through the positioning slit 84a. The pivot component 84c is located between the gas cylinder 82 and the fixing portion 80a of the belt 80. The fixing slit 84b is used to receive the free end 80c of the belt 80. When in use, the fixing buckle 84 can pivotally rotate between at least a loading position and a fixing position. In the loading position, the free end 80c of the belt 80 can be inserted into the fixing slit 84b, and in the fixing position, at least a portion of the free portion 80b of the belt 80 is retained between the fixing buckle 84 and the fixing portion 80a. It has been disclosed in the Chinese patent application No. CN101879357 "Gas cylinder fixing device".

In the second gas cylinder fixing device disclosed above, since the free end 80c is exposed on the outside of the fixing buckle 84, when the user accidentally touches the free end 80c, the free end 80c will link the pivot part 84c of the fixing buckle 84, causing the pivot part 84c to pivot and loosen, thereby causing the gas cylinder 82 to fall from the equipment of the person carrying it, thereby causing immediate danger to the life of the person who must carry self-contained breathing gas. Furthermore, in order to prevent the free end 80c from being accidentally touched and causing the pivot part 84c of the fixing buckle 84 to pivot loose, the free end 80c only protrudes a small amount from the outside of the fixing buckle 84. In this way, the free end 80c cannot be applied with force to firmly fix the gas cylinder 82. Furthermore, when replacing the gas cylinder 82 with a different diameter size, it is necessary to select the belt 80 of a matching length, which is very inconvenient to use.

In view of this, it is indeed necessary to improve how to securely fix the gas cylinder to the equipment of the person carrying it.

In order to solve the above problems, the main purpose of the present invention is to provide a gas cylinder fixing device, which can firmly fix the gas cylinder on the equipment of the carrier to prevent the gas cylinder from falling.

A second object of the present invention is to provide a gas cylinder fixing device that can prevent the belt from loosening due to unintentional contact with the free end of the belt and can prevent the gas cylinder from falling.

Another object of the present invention is to provide a gas cylinder fixing device that can be applied to a variety of gas cylinders with different diameters.

The directions or similar terms described throughout the present invention, such as "front", "rear", "left", "right", "upper (top)", "lower (bottom)", "inside", "outside", "side", etc., are mainly with reference to the directions of the attached drawings. Each direction or the similar terms are only used to assist in the description and understanding of the various embodiments of the present invention, and are not used to limit the present invention.

The quantifiers "a" or "an" used in the elements and components described throughout the present invention are only for convenience of use and to provide a general meaning of the scope of the present invention; they should be interpreted in the present invention as including one or at least one, and the single concept also includes the plural case unless it is obvious that it means otherwise.

The gas cylinder fixing device of the present invention may include: a belt body having a first end, a second end, a first surface and a second surface opposite to each other; a fixing plate made of a solid material, the fixing plate having a first slit, a second slit and a third slit, the first slit, the second slit and the third slit being used for the second end of the belt body to pass through; an adjuster having a A first slot, a second slot and a third slot, wherein the first slot, the second slot and the third slot are used for the second end of the belt to pass through, the adjuster has a connecting ring, the connecting ring has a pivot shaft and two side parts, and the adjuster can pivot according to the pivot shaft; and a supporting plate has two sets of matching holes opposite to each other, and the two sets of matching holes are used for the second end of the belt to pass through back and forth.

Accordingly, the gas cylinder fixing device of the present invention has the fixing plate, so the second end of the belt body can have a larger protruding length, and the belt body can be conveniently adjusted to cope with gas cylinders of different diameters, and because the fixing plate can abut against one side of the supporting plate, the belt body can be tightened by force to fix the gas cylinder. In addition, because the second end of the belt body is hidden between the belt body originally surrounding the gas cylinder and the gas cylinder, the second end will not be accidentally touched to cause the belt body to loosen, and the first level of fixing the gas cylinder can be achieved; and through the rotation of the adjuster, the belt body can be more tightly bound to the outer surface of the gas cylinder, having a second level of fixing effect, and achieving the effect of preventing the gas cylinder from falling.

The first end of the belt body has a pull hole, and the pull hole forms an opening on the upper and lower sides of the belt body. Thus, the pull hole can be used for a pull member to pass through, and the two ends of the pull member can pass through the pull hole and appear at the two openings.

The pull hole is provided for a pull member to pass through, and the two ends of the pull member are exposed in the two openings respectively, and the two ends each have a head portion larger than the aperture of the two openings. In this way, the two ends of the pull member can be exposed in the two openings respectively to be pulled, so that the pull member forms a loop, or the head portion of one end abuts against the opening, while the head portion of the other end becomes an extension away from the opening.

The adjuster further has at least one positioning block. When the adjuster pivots along the pivot axis, the inner surface of one side of the connecting ring can pass over the at least one positioning block, so that the positioning block can be located on one side of the connecting ring. In this way, after the adjuster and the connecting ring pivot relative to each other, the at least one positioning block can position the adjuster after pivoting.

The adjuster has a cam portion, and the wheel surface of the cam portion and the pivot axis center of the connecting ring have different radii. Thus, by pivoting the adjuster, the belt body originally tightened on the outer surface of the gas cylinder can be loosened, or can be tightened on the outer surface of the gas cylinder.

The supporting plate has a supporting portion, which is an arc concave portion. In this way, the gas cylinder in a cylindrical shape can be stably positioned on the supporting plate.

The supporting plate has two side walls, and the two sets of matching holes are located on the two side walls. In this way, the belt body can easily pass through the two sets of matching holes back and forth, so that the gas cylinder formed into a cylindrical shape can be stably positioned between the two side walls.

The carrier plate has at least one positioning hole for a positioning member to be coupled to a device, so that the carrier plate can be firmly attached to the device.

The equipment is one of a diving suit, a vest, a fireproof suit, and a life jacket. Thus, the equipment can be used by divers, firefighters, or lifeguards.

The belt body surrounds a gas cylinder, and the second surface of the belt body is attached to the outer surface of the gas cylinder. In this way, the gas cylinder can be firmly fixed to the equipment.

The second end of the belt body is inserted into the first slot of the adjuster, and the first end of the belt body is stopped at the outer side of the first slot. After the first end of the belt body passes through the second slot, the third slot, and the connecting ring in sequence, the belt body is attached to and surrounds the gas cylinder from the second surface, and then passes through the first slit and the second slit of the fixing plate in sequence, and then passes through the two sets of matching holes of the supporting plate, and then passes through the connecting ring and returns to pass through the two sets of matching holes of the supporting plate again, and then passes through the third slit of the fixing plate and passes out from the first slit, so that the second end is between the belt body originally surrounding the gas cylinder and the gas cylinder. In this way, the gas cylinder can be tightened to be firmly fixed to the equipment.

When the belt body reciprocates through the two sets of holes of the carrier plate and the first slit of the fixing plate, and the second end of the belt body is between the belt body originally surrounding the gas cylinder and the gas cylinder, the two belt bodies are in overlapping contact. In this way, the two belt bodies in overlapping contact can have a larger friction resistance, which can prevent the two belt bodies from sliding and loosening.

The belt body is made of PP fiber woven tape or nylon woven tape, and the second surface of the belt body has a texture, and the second surfaces of the belt body are bonded to each other in overlapping contact. In this way, the belt body can be bonded to each other by the second surfaces having the texture, so that the two belt bodies can have a larger friction resistance, and can achieve the effect of preventing the two belt bodies from sliding and loosening.

The fixing plate is in contact with one side of the supporting plate. Thus, the belt body can be forced by the second end to tighten and fix the gas cylinder on the supporting plate.

In order to make the above and other purposes, features and advantages of the present invention more clearly understood, the following specifically describes the preferred embodiments of the present invention in detail with reference to the accompanying drawings.

The directions or similar terms described in the present invention, such as "front", "rear", "left", "right", "upper (top)", "lower (bottom)", "inside", "outside", "side", etc., are mainly with reference to the directions of the attached drawings. Each direction or the similar terms are only used to assist in the description and understanding of the various embodiments of the present invention, and are not used to limit the present invention.

Please refer to FIG. 3 , which is a preferred embodiment of the gas cylinder fixing device of the present invention, which may include a belt body 1, a fixing plate 2, an adjuster 3 and a supporting plate 4. The belt body 1 may pass through the slit of the fixing plate 2, the slot of the adjuster 3 and the assembly hole of the supporting plate 4.

Please refer to Figures 3 and 4. The belt body 1 has a predetermined thickness, preferably between 1.5 and 3.5 mm. The belt body 1 can be made of PP fiber woven tape or nylon woven tape, and the present invention is not limited thereto. The belt body 1 has a first end 1a, a second end 1b, a first surface 11, and a second surface 12 opposite to each other. The belt body 1 can surround a gas cylinder 5, and the second surface 12 is attached to the outer surface of the gas cylinder 5. The first end 1a has a pull hole 13. The pull hole 13 can be used to fold the first end 1a of the belt body 1, and the folded first end 1a is fixed by hot melting, sewing, etc. to form the pull hole 13, and the pull hole 13 is formed with an opening on the upper and lower sides of the belt body 1. The pull hole 13 can be used for a pull member 14 to pass through. The pull member 14 can be a rope body. The two ends of the pull member 14 are respectively connected to the pull hole 13. The two ends of the pull member 14 are respectively exposed in the two openings and can be pulled, so that the pull member 14 forms a loop as shown in Figures 3 and 4, or forms a head 15 at one end abutting against the opening as shown in Figure 5, and the head 15 at the other end can be extended in a direction away from the opening. The second end 1b of the belt body 1 can pass through the first slit 21, the second slit 22, and the third slit 23 of the fixing plate 2, and the first slot 31, the second slot 32, and the third slot 33 of the adjuster 3.

Please continue to refer to Figures 3 and 4. The fixing plate 2 can be made of a solid metal material. The fixing plate 2 has a first slit 21, a second slit 22 and a third slit 23. The first slit 21, the second slit 22 and the third slit 23 are for the second end 1b of the belt body 1 to pass through. The fixing plate 2 can also have a through hole 24 to facilitate the flow of fluid.

Please continue to refer to FIGS. 3 and 4 , the adjuster 3 has a first slot 31 , a second slot 32 and a third slot 33 , and the first slot 31 , the second slot 32 and the third slot 33 are for the second end 1 b of the belt 1 to pass through. The adjuster 3 has a connecting ring 34, and the connecting ring 34 has a pivot axis 341 and two side portions 342. The adjuster 3 can pivot about the pivot axis 341, and the adjuster 3 can also have at least one positioning block 35. When the adjuster 3 pivots about the pivot axis 341, the inner surface of one side portion 342 of the connecting ring 34 can pass over the at least one positioning block 35, so that the positioning block 35 can be located on one side of the connecting ring 34 (as shown in Figures 6 and 7), so that the adjuster 3 and the connecting ring 34 can be positioned after pivoting relative to each other.

Please refer to FIG. 6 , the adjuster 3 has a cam portion 36, the wheel surface of the cam portion 36 and the center of the pivot shaft 341 of the adjuster 3 have different radii, and the wheel surface of the cam portion 36 can be pivoted against the first surface 11 of the belt body 1 around the outer surface of the gas cylinder 5, that is, by the pivoting of the adjuster 3, the belt body 1 that has been tightened on the outer surface of the gas cylinder 5 can be loosened, or as shown in FIG. 7 , can be more tightly tightened on the outer surface of the gas cylinder 5.

Please continue to refer to Figures 3 and 4. The support plate 4 has two sets of matching holes 41 opposite to each other. The two sets of matching holes 41 are for the second end 1b of the belt 1 to pass back and forth. Preferably, the support plate 4 has a supporting portion 40. The supporting portion 40 can be an arc concave portion, or as shown in the figure, the support plate 4 has two side walls 42, and the two sets of matching holes 41 can be located on the two side walls 42, so that the belt 1 can easily pass through the two sets of matching holes 41, so that the cylinder 5 formed into a cylinder can be stably positioned on the support plate 4. The support plate 4 can be provided with a positioning member 44 for combining with a device 6 by at least one positioning hole 43. The device 6 can be one of a diving suit, a vest, a fireproof suit, a life jacket, etc., and the present invention is not limited thereto. The supporting plate 4 may be provided with a number of holes 45 so that the weight of the supporting plate 4 can be reduced.

Please refer to FIG. 6, which is an embodiment of the gas cylinder fixing device of the present invention combined with a gas cylinder. First, the second end 1b of the belt body 1 is inserted through the first slot 31 of the adjuster 3, and the first end 1a of the belt body 1 is stopped at the outer side of the first slot 31. After the first end 1a of the belt body 1 passes through the second slot 32, the third slot 33, and the connecting ring 34 in sequence, the belt body 1 is attached to and surrounds the gas cylinder 5 from the second surface 12, and then passes through the first slit 21, the second slit 22, and the connecting ring 34 in sequence. The second end 1b of the belt body 1 passes through the two sets of matching holes 41 of the carrier plate 4, and then passes through the connecting ring 34 and then returns to pass through the two sets of matching holes 41 of the carrier plate 4 again, and then passes through the third slit 23 of the fixing plate 2 and passes out from the first slit 21. At this time, the second end 1b is between the belt body 1 originally surrounding the gas cylinder 5 and the gas cylinder 5. In this way, the second end 1b of the belt body 1 is hidden between the belt body 1 originally surrounding the gas cylinder 5 and the gas cylinder 5. Even if the user touches the belt body 1 unintentionally, the second end 1b will not cause the belt body 1 to loosen due to accidental touch. In particular, the second end 1b of the belt 1 can be formed to protrude from the first slit 21 of the fixing plate 2 with a greater length, so that the belt 1 is not only applicable to a variety of different gas cylinder diameters. In addition, when a force is applied to the second end 1b of the belt 1, since one end of the fixing plate 2 is abutted against the supporting plate 4, the belt 1 that has been tightened can be adjusted and force is applied to the second end 1b of the belt 1, so that the gas cylinder 5 is more tightly fixed to the supporting plate 4 and the equipment 6.

Please note that the belt body 1 of the present invention can be made of a PP fiber woven belt or a nylon woven belt, so the second surface 12 of the belt body 1 can have a concave and convex texture surface, so that when the second end 1b of the belt body 1 passes through the two sets of matching holes 41 of the supporting plate 4 and the first slit 21 of the fixing plate 2, and the second end 1b of the belt body 1 is hidden between the belt body 1 originally surrounding the gas cylinder 5 and the gas cylinder 5, the belt body 1 is in overlapping contact, so that the second surface 12 with the texture can be in contact with each other and have a larger friction resistance, which can prevent the belt bodies 1 from sliding and loosening.

Please refer to FIG. 7 . After the belt 1 is used to tightly combine the gas cylinder 5 and the supporting plate 4 and fix them to the equipment 6 as described above, the adjusting device 3 can be pivoted in the direction indicated by the arrow (clockwise) by pulling the pulling member 14 into a ring, so that the belt 1 that has been tightened can more tightly combine the gas cylinder 5 and the supporting plate 4 and fix them to the equipment 6. In addition, the pull member 14 can be pulled at one end (as shown in FIG. 5 ) so that the head 15 at one end abuts against the opening, while the head 15 at the other end is pulled away from the opening. In this way, although one end of the pull member 14 and the head 15 are exposed, even if the user accidentally touches the pull member 14 or the head 15, the adjuster 3 will not rotate and the belt body 1 will not loosen.

On the contrary, when the gas cylinder 5 is to be removed from the supporting plate 4, the pulling member 14 can be pulled to form a ring. In this way, the adjuster 3 can be pivoted in the opposite direction (counterclockwise) as indicated by the arrow by pulling the pulling member 14 into a ring, so that the belt 1 can be loosened (as shown in FIG. 6 ), so that the gas cylinder 5 can be easily removed from the supporting plate 4.

In summary, the gas cylinder fixing device of the present invention has the fixing plate, so the second end of the belt body can be a larger protruding length, and the belt body can be easily adjusted to cope with gas cylinders of different diameters. Moreover, since the fixing plate can abut against one side of the supporting plate, the belt body can be tightened to fix the gas cylinder. In addition, since the second end of the belt body is hidden between the belt body originally surrounding the gas cylinder and the gas cylinder, the second end will not be The belt body is loosened due to accidental contact, so the first level of fixing of the gas cylinder can be achieved. In addition, since the belt body can form a partially overlapping and winding contact, the textures on the second surfaces of the two belt bodies can be in contact with each other and have a larger friction resistance, which can prevent the two belt bodies from sliding loose, and through the pivoting of the adjuster, the belt body can be more tightly bound to the outer surface of the gas cylinder, which has a second level of fixing effect and can prevent the gas cylinder from falling.

Although the present invention has been disclosed using the above-mentioned preferred embodiments, they are not intended to limit the present invention. Any person skilled in the art may make various changes and modifications to the above-mentioned embodiments without departing from the spirit and scope of the present invention, and the scope of protection of the present invention shall include all changes within the meaning and equivalent scope recorded in the attached patent application.

[The present invention] 1: belt body 1a: first end 1b: second end 11: first surface 12: second surface 13: pull hole 14: pull member 15: head 2: fixing plate 21: first slit 22: second slit 23: third slit 24: perforation 3: adjuster 31: first slot 32: second slot 33: third slot 34: connecting ring 341: pivot 342: side 35: positioning block 36: cam 4: supporting plate 40: supporting part 41: assembly hole 42: side wall 43: positioning hole 44: positioning member 45: hole 5: cylinder 6: equipment ﹝Used﹞ 80: belt 80a: fixed part 80b: free part 80c: free end 81: equipment 82: cylinder 83a, 83b, 83c: slit 84a: positioning slit 84b: fixing slit 84c: pivot part 90: backpack 9a, 9b: belt 91: buckle 92: ratchet 93: sawtooth 94: cylinder

[Figure 1] A top cross-sectional view of a known adjustable belt and buckle assembly. [Figure 2] A top cross-sectional view of a known gas cylinder fixing device. [Figure 3] A partially exploded three-dimensional view of a preferred embodiment of the present invention. [Figure 4] A top cross-sectional view of a preferred embodiment of the present invention. [Figure 5] A view of the pull member being pulled outward as shown in Figure 3. [Figure 6] A view of a preferred embodiment of the present invention being surrounded by a gas cylinder. [Figure 7] A view of the action as shown in Figure 6.

1: With body

1a: First end

1b: Second end

11: First surface

12: Second surface

13: Pull hole

14: Pulling piece

15: Head

2:Fixed plate

21: The first narrow seam

22: The second narrow seam

23: The third narrow seam

24:Piercing

3: Regulator

31: First slot

32: Second slot

33: The third slot

34:Connection ring

341: Articulated shaft

342: Side

35: Positioning block

36: Cam part

4: Carrier board

40: Carrying part

41: Assembly hole

42: Side wall

43: Positioning hole

44: Positioning piece

45: Hole

6: Equipment

Claims (14)

A gas cylinder fixing device comprises: A belt body having a first end, a second end, a first surface and a second surface opposite to each other; A fixing plate made of a solid material, the fixing plate having a first slit, a second slit and a third slit, the first slit, the second slit and the third slit are used for the second end of the belt body to pass through; An adjuster having a first slot, a second slot and a third slot, the first slot, the second slot and the third slot are used for the second end of the belt body to pass through, the adjuster having a connecting ring, the connecting ring having a pivot axis and two side parts, the adjuster can pivot according to the pivot axis; and A supporting plate having two sets of holes opposite to each other, the two sets of holes are used for the second end of the belt to pass through repeatedly. As in claim 1, the gas cylinder fixing device, wherein the first end of the belt body has a pulling hole, and the pulling hole forms an opening on the upper and lower sides of the belt body. As in claim 2, the gas cylinder fixing device, wherein the pull hole is for a pull member to pass through, the two ends of the pull member are respectively exposed in the two openings, and the two ends each have a head larger than the diameter of the two openings. As in claim 1, the gas cylinder fixing device, wherein the adjuster further has at least one positioning block. When the adjuster pivots along the pivot axis, the inner surface of one side of the connecting ring can pass over the at least one positioning block, so that the positioning block can be located on one side of the connecting ring. As in claim 1, the gas cylinder fixing device, wherein the adjuster has a cam portion, and the wheel surface of the cam portion and the center of the pivot axis of the connecting ring have different radii. As in claim 1, the gas cylinder fixing device, wherein the supporting plate has a supporting portion, and the supporting portion is an arc recessed portion. As in claim 1, the gas cylinder fixing device has two side walls on the supporting plate, and the two sets of matching holes are located on the two side walls. As in claim 1, the gas cylinder fixing device, wherein the supporting plate has at least one positioning hole for a positioning piece to be coupled to a device. For example, the cylinder fixing device of claim 8, wherein the equipment is one of a diving suit, a vest, a fireproof suit, and a life jacket. As in claim 1, the gas cylinder fixing device, wherein the belt body surrounds a gas cylinder, and the second surface of the belt body is attached to the outer surface of the gas cylinder. As in claim 10, the gas cylinder fixing device, wherein the second end of the belt body is inserted through the first slot hole of the adjuster, and the first end of the belt body stays on the outer side of the first slot hole. After the first end of the belt body passes through the second slot hole, the third slot hole, and the connecting ring in sequence, the belt body adheres to and surrounds the gas cylinder from the second surface, and then passes through the first slit and the second slit of the fixing plate in sequence, and then passes through the two sets of matching holes of the supporting plate, and then passes through the connecting ring and returns to pass through the two sets of matching holes of the supporting plate again, and then passes through the third slit of the fixing plate and passes out from the first slit, so that the second end is between the belt body originally surrounding the gas cylinder and the gas cylinder. As in claim 11, the gas cylinder fixing device, wherein the belt body is reciprocated through the two sets of matching holes of the supporting plate, the first slit of the fixing plate, and when the second end of the belt body is between the belt body originally surrounding the gas cylinder and the gas cylinder, the belt body is in overlapping contact. As in claim 12, the gas cylinder fixing device, wherein the belt body is made of PP fiber woven tape or nylon woven tape, the second surface of the belt body has a texture, and the second surface of the belt body is adhered to each other in overlapping contact. As in claim 11, the gas cylinder fixing device, wherein the fixing plate is abutted against one side of the supporting plate.

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