Gas storage bottle

Abstract

The utility model discloses a gas storage bottle which comprises a gas storage bottle body and a gas valve, the gas valve comprises a valve body assembly and a piston assembly, and the valve body assembly comprises a valve body and an opening formed in the valve body; the piston assembly comprises a piston and a transmission assembly; in the axial direction of the valve body assembly, the projection of the opening falls into the projection of the piston, and the projection of the piston falls into the projection of the valve body. The projection of the opening falls into the projection of the piston, so that communication of the opening is affected by contact between the piston and the valve body, meanwhile, the transmission assembly is arranged to enable the piston to continuously abut against the inner surface of the valve body, the operation stability of the gas valve is improved, the problem of gas leakage is avoided, and transportation is convenient. Due to the fact that other objects can only stretch into the opening and abut against the piston to trigger the gas valve to be opened, the passable space of the opening is small, the carrying and using safety is improved, and the using stability of the product is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas storage cylinders, and particularly relates to a gas storage cylinder. Background Art

[0002] Gas storage cylinders include gas cylinders and mountain tanks, both of which store gas and transport it to the required use scenarios for operation. In the prior art, a non-detachable gas nozzle is arranged above the gas cylinder, wherein the gas nozzle is a hollow cylinder with a certain length. After the end of the gas nozzle is paired with the filling hole of the lighter, the gas cylinder is moved to achieve the effect of pressing the gas nozzle to inflate the lighter. The gas nozzle and the valve that controls whether the gas is delivered are integrated into a design. Since the gas nozzle is a long object, it requires a large space. During transportation, a cap of corresponding height is required to protect it to prevent the gas nozzle from being bent or damaged by other objects and affecting the operating performance of the product. At the same time, since the gas nozzle has a certain length, during transportation or when the user is carrying it, the gas nozzle is easily affected by external forces and moves, thereby causing the gas inside the gas cylinder to be discharged unnecessarily, posing a safety hazard. In view of this, it is necessary to develop a gas storage cylinder. Utility Model Content

[0003] The present utility model aims to provide a gas storage cylinder to solve the above-mentioned technical problems. The piston and the valve body assembly are in contact or released to control the opening or closing of the valve body assembly. The projection of the opening falls within the projection of the piston, so that the connection of the opening is affected by the contact between the piston and the valve body. At the same time, a transmission assembly is provided to ensure that the piston continuously contacts the inner surface of the valve body, thereby improving the operational stability of the gas valve and preventing gas leakage. The gas valve that controls gas output occupies a smaller space, making it easier to transport. Only the opening can touch the piston surface, so the space through which gas can pass is smaller, and leakage of the piston to the outside is prevented. The gas valve and the gas nozzle are detachably arranged. Since other objects can only be inserted through the opening and contact the piston to trigger the opening of the gas valve, the space through which gas can pass through the opening is smaller, reducing the probability of other objects contacting the piston during transportation, thereby greatly preventing the problem of gas output to the outside under unnecessary circumstances, improving portability and use safety, and reducing the impact of other objects on the piston, thereby improving product stability in use.

[0004] In order to achieve the above-mentioned purpose of the utility model, the technical solution adopted by the utility model is as follows:

[0005] A gas cylinder comprising a gas cylinder body and a gas valve mounted on the gas cylinder body, the gas valve comprising a valve body assembly and a piston assembly, the valve body assembly comprising a valve body and an opening provided on the valve body; the piston assembly comprising a piston provided within the valve body and a transmission assembly for causing the piston to continuously contact an inner surface of the valve body;

[0006] In the axial direction of the valve body assembly, the projection of the opening falls within the piston projection, and the piston projection falls within the valve body main body projection. The piston abuts against the inner surface of the valve body main body at the location of the opening; the transmission component is disposed within the valve body assembly, one end of the transmission component is connected to the interior of the valve body main body, and the other end of the transmission component is connected to the piston.

[0007] The piston abuts or disengages from the valve body assembly to control the opening or closing of the valve body assembly. The projection of the opening falls within the piston projection, such that whether the opening is connected or not is affected by whether the piston abuts against the valve body main body or not. At the same time, a transmission component is provided to continuously make the piston abut against the inner surface of the valve body main body, improving the operating stability of the gas valve, avoiding the problem of air leakage, making the space occupied by the gas valve for controlling whether gas is output or not smaller, facilitating transportation; and only the opening can touch the piston surface, the accessible space is small, and the piston is prevented from leaking out to the outside. Moreover, the gas valve and the nozzle are detachably arranged. Since other objects can only extend from the opening and abut against the piston to trigger the opening of the gas valve, the accessible space of the opening is small, reducing the probability of other objects touching the piston during carrying, thereby greatly avoiding the problem of gas being output to the outside under unnecessary circumstances, improving the safety of carrying and use, and reducing the influence of other objects on the piston, improving the stability of product use.

[0008] Preferably, the valve body main body, the transmission component, and the piston are all coaxially arranged. The piston and the opening are coaxially arranged, and multiple coaxially arranged components are coaxially arranged, improving the operating stability of the gas valve. The piston abuts against the inner surface of the valve body main body, and in the coaxially arranged state, the abutting effect is more stable.

[0009] Preferably, the transmission component includes a first telescopic portion that axially expands and contracts relative to the valve body main body, and the first telescopic portion is connected to the side of the piston away from the valve body main body. The first telescopic portion is an elastic component such as a compression spring or a spring piece that can be compressed under force and expand by releasing pressure. Specifically, in this technical solution, a compression spring is used as the first telescopic portion. By arranging the first telescopic portion inside, and at the same time the first telescopic portion continuously makes the piston abut against the valve body main body, the components for controlling the gas valve are arranged inside, avoiding the influence of external objects on the opening or closing of the gas valve, improving the operating stability. At the same time, arranging the first telescopic portion inside avoids the problem of gas output under unnecessary circumstances, which has potential safety hazards.

[0010] Preferably, the transmission component further includes a connection cavity fixedly connected to the inner surface of the valve body main body, and the connection cavity is provided with a through hole coaxially arranged with the opening;

[0011] Along the axial direction of the piston, the piston and the first telescopic part are arranged in sequence in the connection cavity, and one side of the first telescopic part away from the piston abuts against the inner surface of the connection cavity. The opening and the through hole are in a communicating state when the piston and the valve body are not in contact. The connection cavity is provided to provide support for the telescopic movement of the first telescopic part, with a compact structure, enabling the components for controlling the gas output of the gas valve to be arranged inside and requiring less space, thereby improving the stability during carrying or transportation.

[0012] Preferably, along the vertical direction of the axial direction of the transmission component, the maximum linear distance AA' between the two ends of the outer surface of the piston is less than the maximum linear distance BB' between the two ends of the inner surface of the connection cavity. The cross-section of the inner surface of the connection cavity and the piston along the vertical direction of the axial direction of the transmission component is circular. By setting a piston relatively smaller than the connection cavity, when the gas valve is in the open state, gas can be transmitted to the opening through the gap between the piston and the connection cavity, avoiding the need to set other passages for gas flow, thus avoiding the need to set other components for gas transmission, improving the overall structural compactness, effectively avoiding the problem of gas output to the outside under unnecessary circumstances, improving the safety performance, and at the same time, the structure requires less space, improving the stability during carrying or transportation.

[0013] Preferably, the piston and the first telescopic part are coaxially arranged in the connection cavity. Multiple coaxial components are arranged coaxially to improve the operating stability of the gas valve. The piston abuts against the inner surface of the valve body. In the coaxially arranged state, the abutting effect is more stable.

[0014] Preferably, the valve body is provided with a gasket, and the gasket is provided with a gasket opening communicating with the opening. The piston abuts against the gasket.

[0015] Along the axial direction of the valve body assembly, the projection of the gasket opening falls within the projection of the opening, and the projection of the gasket opening falls within the projection of the piston. Along the axial direction of the valve body, the side of the gasket away from the opening abuts against the upper surface of the connection cavity, and the upper end of the connection cavity is flush with the maximum stroke of the upper end of the piston. When the piston and the gasket are not in contact, the opening, the gasket opening, the connection cavity, the gap between the piston and the connection cavity, and the through hole are all in a conducting state, and the gas valve is in the open state, allowing gas to conduct. Setting the gasket is beneficial to improving the airtightness between the piston and the valve body in the abutting state and improving the operating stability of the piston.

[0016] Preferably, the piston is provided with a cavity opposite to the opening, and a resistance block is provided in the cavity. A resistance wall that resists the gasket is provided on the outer edge of the cavity, and along the axial direction of the valve body assembly, the projection of the gasket opening falls into the projection of the opening, and the projection of the gasket opening falls into the projection of the resistance wall. A resistance block is provided, and the resistance block is provided in the middle of the cavity, and the periphery of the resistance block is the cavity, so that the resistance surface of the piston near the opening is smaller, and a larger resistance surface is provided at a certain distance from the opening, thereby reducing the probability of other objects contacting the piston in a resistance state, preventing the operating performance of the product from being affected, thereby avoiding the problem of gas being output due to the piston being triggered by mistake in unnecessary situations, and improving safety and stability.

[0017] Preferably, a protrusion is provided on the end of the piston away from the opening, and the inner surface of one end of the first telescopic portion is provided on the outer periphery of the protrusion. Providing the protrusion within the range in which the first telescopic portion is provided allows the first telescopic portion to be effectively provided at the lower end of the piston, thereby improving the operational stability of the first telescopic portion.

[0018] Preferably, a connection portion is provided on the outer edge of the valve body. This connection portion allows the valve body to be connected to an external gas nozzle, effectively separating the gas nozzle from the gas valve. This prevents the gas nozzle from being bent or damaged by other objects due to the non-detachable gas nozzle and gas valve, thereby affecting the product's operating performance. It also prevents unnecessary gas discharge, improving portability.

[0019] Preferably, the gas cylinder further comprises a gas nozzle, which is detachably mounted on the gas valve. The gas nozzle comprises a gas nozzle housing and an inflation needle assembly movably arranged in the gas nozzle housing. The gas nozzle housing is provided with a connecting end connected to the connecting portion. The connecting portion and the connecting end may be provided with a quick-release structure such as a snap-fit structure and a threaded connection structure. In the present technical solution, the connecting portion and the connecting end are specifically threaded connection structures. The inflation needle assembly extends through the opening and the gasket opening into the connecting cavity and conflicts with the piston. Specifically, the inflation needle assembly conflicts with the conflicting block on the piston, so that the valve body assembly is in a conductive state. At the same time, when the inflation needle assembly is not pressed, the inside and outside of the gas nozzle housing are in a non-conductive state, thereby converting to controlling whether the gas is delivered or not through the inflation needle assembly. A gas nozzle is provided for use with a gas valve, and the gas nozzle and the gas valve are detachable so that the gas nozzle and the gas valve can be transported separately, thereby avoiding the problem of the gas nozzle having a certain length and occupying a large space during transportation, and at the same time avoiding the gas nozzle being bent or damaged by other objects, thereby affecting the operating performance of the product. The detachable setting and separation of the gas nozzle avoid the problem of gas valve output under unnecessary circumstances, thereby reducing safety hazards.

[0020] Preferably, the gas needle assembly includes a gas needle valve body movably connected to the gas nozzle housing, and an ejector pin assembly disposed within the gas nozzle housing and abutting against the lower end of the gas needle valve body. The gas needle valve body and the ejector pin assembly are coaxially disposed along the axial direction of the gas nozzle housing, wherein the gas needle valve body is partially disposed within the gas nozzle housing and extends to the exterior of the gas nozzle housing, and the ejector pin assembly is fixedly connected to the inner surface of the gas nozzle housing. The air needle valve body and the ejector pin assembly are arranged in sequence in the vertical direction. The ejector pin assembly conflicts with the piston and causes the piston to move vertically a certain distance. When the piston and the gasket are in a non-conflicting state, the opening, the gasket opening, the connecting cavity, the interval between the piston and the connecting cavity, and the through hole are all in a conducting state. The gas is transmitted to the air needle valve body, and the gas output is controlled by the air needle valve body, thereby converting the control component of the gas transmission into the air needle valve body, which is convenient for the inflation operation. When the gas nozzle is not installed to the gas valve, the internal gas is controlled to be output through the piston in the gas valve, reducing the probability of gas being transmitted to the outside due to external contact when it is not necessary. After the gas valve is connected to the gas nozzle, the piston is in a normally open state, and the switching of gas transmission is controlled by the air needle valve body, avoiding the need for multiple components to be opened or closed at the same time, thereby improving the stability of the operation.

[0021] Preferably, the air needle valve body includes an air needle movably connected to the air nozzle housing, a conflicting piston fixedly arranged below the air needle, and a second telescopic part arranged at the lower end of the conflicting piston; the second telescopic part conflicts with the ejector assembly on the side away from the conflicting piston; an air vent is provided inside the air needle, and one end of the air vent is blocked by the air nozzle housing. The upper end surface of the conflicting piston conflicts with the lower end surface of the air nozzle housing. The second telescopic part is an elastic component such as a compression spring or a spring that is compressed when subjected to force and expands when the pressure is released. Specifically, the present technical solution adopts a compression spring as the second telescopic part. The force exerted by the second telescopic part makes the upper end surface of the conflicting piston continuously conflict with the lower end surface of the ejector pin assembly, thereby achieving the effect of sealing the interior of the ejector pin assembly. At the same time, one end of the ventilation channel is blocked by the gas nozzle shell, so that the ventilation channel inside the air needle is in a non-conductive state, avoiding the ventilation channel and the interior of the ejector pin assembly to be connected and gas leakage to occur. In this technical solution, by providing multiple sealed places, the storage stability of the gas is improved, thereby improving the stability of the operation; when the gas needs to be transmitted to the outside, the gas needle is pressed to make the ventilation channel in a non-blocked state, the conflicting piston and the gas nozzle shell in a non-conflicting state, so that the ventilation channel and the ejector pin assembly are in a conductive state, thereby realizing the gas transmission along the ejector pin assembly and the ventilation channel to the outside for inflation operation. This control method is simple, and it is easier to realize whether the gas is delivered or not, thereby improving the stability of the operation, avoiding the problem of output under unnecessary circumstances, and improving safety performance.

[0022] Preferably, the ventilation channel includes a first channel vertically disposed within the gas needle and connected to the outside, and a second channel arranged transversely and connecting the first channel with the outside of the gas needle, the second channel being shielded by the inner surface of the top end of the gas nozzle housing. Along the axial direction of the gas needle, the first channel is arranged vertically, while the second channel is arranged horizontally and connected to the first channel in the middle. The first channel is disposed above the abutting piston, and the connection between the second channel and the ejector assembly is controlled by shielding. This method of controlling gas output is simple and easy to implement, and, in conjunction with the abutting piston's abutment with the gas nozzle housing, improves the operational stability of controlling gas delivery.

[0023] Preferably, a conflicting gasket is provided inside the top end of the gas nozzle housing, and the conflicting gasket is provided with an axial hole, the axial hole is sleeved on the gas needle, and the second channel is blocked by the inner surface of the axial hole. The upper end face of the conflicting piston conflicts with the lower end face of the conflicting gasket. The projection of the axial hole along the axial direction of the gas nozzle housing falls within the range of the upper end face of the conflicting piston. The gas needle can move along the axial direction of the axial hole to control whether the second channel is blocked from the inner surface of the axial hole and whether the conflicting piston conflicts with the conflicting gasket, so as to control the output of gas and improve the stability of the operation.

[0024] Preferably, the ejector assembly includes an ejector block fixedly mounted within the air nozzle housing. The ejector block is provided with a housing for accommodating the air needle valve body and a connecting hole connecting the housing with the lower end of the ejector block. The ejector block is provided with a space for accommodating the air needle valve body as it moves along the axial hole, as well as a housing for accommodating the second telescopic portion. The abutting piston, ejector block, and air nozzle housing are coaxially arranged from the inside out. The connecting hole, housing, and vent passage are interconnected when the air needle valve body is depressed. When the air needle valve body is not depressed, the vent passage is blocked by the axial hole, leaving only the housing, connecting hole, housing, and the lower end of the ejector block interconnected. The upper end of the ejector block abuts against the lower end of the abutting gasket, maintaining airtightness between the housing and the abutting gasket. The vertical end of the ejector block continuously abuts against the abutting block during use, keeping the gas valve in an open state. This allows the gas to be controlled to flow through the air nozzle, improving operational stability.

[0025] Preferably, a sealing ring is provided in the gas nozzle housing, the upper end of the sealing ring contacts the inflation needle assembly, and the lower end of the sealing ring contacts the surface of the valve body. By compressing the sealing ring and deforming it, the gap between the gas nozzle and the gas valve is filled to prevent gas from leaking to the outside from the connection between the gas nozzle and the gas valve.

[0026] Preferably, the nozzle housing is provided with a connection end for connecting to the valve body. Specifically, the connection end is provided on the inner surface at the lower end of the nozzle housing, and the connection part is provided on the outer surface of the valve body. The connection part and the connection end can be provided with quick-release structures such as a snap connection structure and a threaded connection structure. In this technical solution, the connection part and the connection end are specifically a threaded connection structure.

[0027] Preferably, the gas cylinder body includes an inflatable cylinder or an alpine gas cylinder.

[0028] This application has achieved beneficial technical effects:

[0029] The piston of the present utility model abuts against or disengages from the valve body assembly to control the opening or closing of the valve body assembly. The projection of the opening falls within the projection of the piston, so that whether the opening is connected or not is affected by whether the piston abuts against the valve body. At the same time, a transmission component is provided to make the piston continuously abut against the inner surface of the valve body, improving the operation stability of the gas valve, avoiding the problem of air leakage, making the space occupied by the gas valve for controlling whether gas is output smaller, and facilitating transportation;

[0030] And only the opening can touch the piston surface, the accessible space is small, and the piston is prevented from leaking to the outside. Moreover, the gas valve and the nozzle are detachably arranged. Since other objects can only extend from the opening and abut against the piston to trigger the opening of the gas valve, the accessible space of the opening is small, reducing the probability of other objects touching the piston during carrying, thus greatly avoiding the problem of gas being output to the outside under unnecessary circumstances, improving the safety of carrying and using, and reducing the influence of other objects on the piston, improving the use stability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 The following shows the installation structure schematic diagram of the present utility model;

[0032] Figure 2 The following shows Figure 1 the sectional structure schematic diagram taken along the A-A direction of

[0033] Figure 3 The following shows Figure 2 the partial enlarged schematic diagram at the position pointed by X in

[0034] <s Figure 4 The following shows the structure schematic diagram of the valve body;

[0035] Figure 5 The following shows Figure 3 the sectional structure schematic diagram taken along the B-B direction of

[0036] Figure 6 The following shows the assembled structure schematic diagram of the gas valve;

[0037] Figure 7 Another schematic diagram of the assembly structure of the gas valve is shown;

[0038] Figure 8 The schematic diagram of the exploded structure of the gas valve is shown;

[0039] Figure 9 Another schematic diagram of the exploded structure of the gas valve is shown;

[0040] Figure 10 The schematic diagram of the exploded structure of the gas nozzle is shown;

[0041] Figure 11 The schematic diagram of the exploded structure of the gas nozzle is shown;

[0042] Figure 12 The schematic diagram of the structure of the thimble assembly is shown;

[0043] Figure 13 Shown is Figure 12 The schematic diagram of the sectional structure in the C-C direction of

[0044] Figure 14 The schematic diagram of the exploded structure of the gas nozzle and the gas valve applied to the gas filling bottle is shown;

[0045] Figure 15 The schematic diagram of the structure of the gas nozzle and the gas valve applied to the high mountain gas canister is shown.

[0046] Reference numerals

[0047] 1 - Valve body main body; 10 - Opening; 2 - Piston; 3 - Transmission assembly; 31 - First telescopic part; 32 - Connection cavity; 11 - Gasket; 111 - Gasket opening; 20 - Cavity; 21 - Contact block; 201 - Contact wall; 22 - Protrusion; 12 - Connection part; 4 - Gas nozzle housing; 40 - Connection end; 51 - Gas needle valve body; 52 - Thimble assembly; 511 - Gas needle; 512 - Contact piston; 513 - Second telescopic part; 514 - Ventilation channel; 5141 - First channel; 5142 - Second channel; 41 - Gasket; 411 - Shaft hole; 521 - Ejection block; 522 - Accommodation cavity; 523 - Communication hole; 42 - Sealing ring; 6 - Gas filling bottle; 7 - High mountain gas canister. Detailed implementation manners

[0048] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will describe the specific implementation manners of the present invention in contrast with the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to these drawings, and other implementation manners can be obtained.

[0049] The technical solution of the present utility model will be described in detail below with specific embodiments.

[0050] Referring to Figures 1 to 15 , a gas storage cylinder includes a gas storage cylinder body and a gas valve installed on the gas storage cylinder body. The gas valve includes a valve body assembly and a piston assembly. The valve body assembly includes a valve body main body 1 and an opening 10 provided on the valve body main body 1; the piston assembly includes a piston 2 provided inside the valve body main body 1 and a transmission component 3 that continuously presses the piston 2 against the inner surface of the valve body main body 1.

[0051] Along the axial direction of the valve body assembly, the projection of the opening 10 falls within the projection of the piston 2, and the projection of the piston 2 falls within the projection of the valve body main body 1. The piston 2 abuts against the inner surface of the valve body main body 1 where the opening 10 is provided; the transmission component 3 is arranged inside the valve body assembly. One end of the transmission component 3 is connected to the inside of the valve body main body 1, and the other end of the transmission component 3 is connected to the piston 2. One end of the transmission component 3 is connected to the inner surface of the valve body main body 1 and the other end abuts against the piston 2; the piston 2 is arranged inside the transmission component 3 and its upper end is arranged opposite to the inner surface of the valve body main body 1. The piston 2 abuts against or disengages from the valve body assembly to control the opening or closing of the valve body assembly. The projection of the opening 10 falls within the projection of the piston 2, so that whether the opening 10 is connected or not is affected by whether the piston 2 abuts against the valve body main body 1 or not. At the same time, the transmission component 3 is provided to make the piston 2 continuously abut against the inner surface of the valve body main body 1, improving the operation stability of the gas valve, avoiding the problem of air leakage, making the space occupied by the gas valve for controlling whether gas is output or not smaller, facilitating transportation; and only the surface of the piston 2 can be touched at the opening 10, the passing space is small, and the piston 2 is prevented from leaking to the outside. And there is a detachable setting method between the gas valve and the nozzle. Since other objects can only extend from the opening 10 and abut against the piston 2 to trigger the opening of the gas valve, the passing space of the opening 10 is small, reducing the probability of other objects touching the piston 2 during the carrying process, thus greatly avoiding the problem of gas being output to the outside under unnecessary circumstances, improving the carrying and use safety, and reducing the influence of other objects on the piston 2, improving the product use stability.

[0052] The valve body main body 1, the transmission component 3, and the piston 2 are all coaxially arranged. The piston 2 and the opening 10 are coaxially arranged. Multiple coaxial components are coaxially arranged, improving the operation stability of the gas valve. The piston abuts against the inner surface of the valve body main body 1, and in the coaxially arranged state, the abutting effect is more stable.

[0053] The transmission component 3 includes a first telescopic part 31 that axially expands and contracts relative to the valve body 1, and the first telescopic part 31 is connected to the side of the piston 2 away from the valve body 1. The first telescopic part 31 is an elastic component such as a compression spring or a spring piece that can be compressed under force and expand when the pressure is released. Specifically, in this technical solution, a compression spring is used as the first telescopic part 31. The first telescopic part 31 is arranged inside, and at the same time, the first telescopic part 31 makes the piston 2 continuously abut against the valve body 1, so that the component for controlling the gas valve is arranged inside, avoiding the influence of external objects on the opening or closing of the gas valve, improving the operation stability. At the same time, arranging the first telescopic part 31 inside can avoid the problem of gas output in unnecessary situations, which has potential safety hazards.

[0054] The transmission component 3 further includes a connection cavity 32 fixedly connected to the inner surface of the valve body 1, and the connection cavity 32 is provided with a through hole 321 coaxially arranged with the opening 10;

[0055] Along the axial direction of the piston 2, the piston 2 and the first telescopic part 31 are sequentially arranged in the connection cavity 32, and the side of the first telescopic part 31 away from the piston 2 abuts against the inner surface of the connection cavity 32. The opening 10 and the through hole 321 are in a communicating state when the piston 2 and the valve body 1 are not in contact. Arranging the connection cavity 32 provides support for the expansion and contraction of the first telescopic part 31, with a compact structure, enabling the component for controlling the gas output of the gas valve to be arranged inside and requiring less space, improving the stability during carrying or transportation.

[0056] Along the vertical direction of the axis of the transmission component 3, the maximum linear distance AA' between the two ends of the outer surface of the piston 2 is less than the maximum linear distance BB' between the two ends of the inner surface of the connection cavity 32. The cross-sectional plane of the inner surface of the connection cavity 32 and the piston 2 along the vertical direction of the axis of the transmission component 3 is circular. Setting a piston smaller than the connection cavity 32 allows gas to be transmitted to the opening 10 through the gap between the piston 2 and the connection cavity 32 when the gas valve is in the open state, avoiding the need to set other passages for gas flow, thus avoiding the need to set other components for transmitting gas, improving the overall structural compactness, effectively avoiding the problem of gas output to the outside in unnecessary situations, improving the safety performance, and at the same time, the structure requires less space, improving the stability during carrying or transportation.

[0057] The piston 2 and the first telescopic part 31 are both coaxially arranged in the connection cavity 32. Coaxially arranging multiple components improves the operation stability of the gas valve. The piston abuts against the inner surface of the valve body 1, and in the coaxially arranged state, the abutting effect is more stable.

[0058] The valve body 1 is provided with a gasket 11, the gasket 11 is provided with a gasket opening 111 communicating with the opening 10, and the piston 2 abuts against the gasket 11.

[0059] Along the axial direction of the valve body assembly, the projection of the gasket opening 111 falls into the projection of the opening 10, and the projection of the gasket opening 111 falls into the projection of the piston 2. Along the axial direction of the valve body 1, the side of the gasket 11 away from the opening 10 conflicts with the upper surface of the connecting chamber 32, and the upper end of the connecting chamber 32 is flush with the maximum stroke of the upper end of the piston 2. When the piston 2 and the gasket 11 are in a non-conflicting state, the opening 10, the gasket opening 111, the connecting chamber 32, the gap between the piston 2 and the connecting chamber 32, and the through hole 321 are all in a conductive state, the gas valve is in an open state, and the gas is conducted. The provision of a gasket is beneficial to improving the airtightness between the piston 2 and the valve body 1 in the conflicting state, and improving the operating stability of the piston.

[0060] The piston 2 is provided with a cavity 20 arranged opposite to the opening 10, and a resistance block 21 is provided in the cavity 20. A resistance wall 201 is provided on the outer edge of the cavity 20 to resist the gasket 11. Along the axial direction of the valve body assembly, the projection of the gasket opening 111 falls into the projection of the opening 10, and the projection of the gasket opening 111 falls into the projection of the resistance wall 201. The resistance block 21 is provided, and the resistance block 21 is provided in the middle of the cavity 20. The outer periphery of the resistance block 21 is the cavity 20, so that the resistance surface of the piston 2 at the proximal end of the opening 10 is smaller, and a larger resistance surface is provided at a certain distance from the opening, thereby reducing the probability of other objects contacting the piston in a resistance state, preventing the operating performance of the product from being affected, thereby avoiding the problem of gas being output due to the piston 2 being triggered by mistake in unnecessary situations, and improving safety and stability.

[0061] The piston 2 is provided with a protrusion 22 at one end away from the opening 10, and the inner surface of one end of the first telescopic portion 31 is disposed on the periphery of the protrusion 22. The protrusion 22 is provided within the range of the first telescopic portion 31, allowing the first telescopic portion to be effectively positioned at the lower end of the piston, thereby improving the operational stability of the first telescopic portion.

[0062] A connecting portion 12 is provided on the outer edge of the valve body 1. This allows the valve body 1 to be connected to an external gas nozzle, effectively separating the nozzle from the gas valve. This prevents the nozzle from being bent or damaged by other objects, which could affect the product's performance if the nozzle and valve are inseparable. It also prevents unnecessary gas discharge, improving portability.

[0063] The gas storage cylinder further includes a nozzle used in conjunction with the gas valve. The nozzle is detachably installed on the gas valve and includes a nozzle housing 4 and an inflation needle assembly movably arranged inside the nozzle housing 4. The nozzle housing 4 is provided with a connection end 40 connected to the connection part 12. The connection part 12 and the connection end 40 can be provided with quick-release structures such as a clamping structure and a threaded connection structure. In this technical solution, the connection part 12 and the connection end 40 are specifically a threaded connection structure. The inflation needle assembly passes through the opening 10 and the gasket opening 111 and extends into the connection cavity 32 and abuts against the piston 2. Specifically, the inflation needle assembly abuts against the abutting block 21 on the piston 2, making the valve body assembly in a conducting state. At the same time, when the inflation needle assembly is not pressed, the inside of the nozzle housing 4 is non-conducting with the outside, so as to convert to controlling the gas delivery through the inflation needle assembly. By providing a nozzle used in conjunction with the gas valve, the nozzle and the gas valve are detachably arranged, so that the nozzle and the gas valve can be transported separately, thus avoiding the problem that the nozzle occupies a large space due to its certain length during transportation, and at the same time avoiding the problem that the nozzle is bent or damaged by other objects, which affects the operation performance of the product. The detachable arrangement separates the nozzle, avoiding the problem of gas valve output in unnecessary situations and reducing potential safety hazards.

[0064] The inflation needle assembly includes a gas needle valve body 51 movably connected to the nozzle housing 4 and a thimble assembly 52 arranged inside the nozzle housing 4 and abutting against the lower end of the gas needle valve body 51. Along the axial direction of the nozzle housing 4, the gas needle valve body 51 and the thimble assembly 52 are coaxially arranged. The gas needle valve body 51 is partially arranged inside the nozzle housing 4 and extends to the outside of the nozzle housing 4. The thimble assembly 51 is fixedly connected to the inner surface of the nozzle housing 4. The gas needle valve body 51 and the thimble assembly 52 are arranged in sequence in the vertical direction. The thimble assembly 52 abuts against the piston 2 and makes the piston 2 move vertically a certain distance. When the piston 2 is not in contact with the gasket 11, the opening 10, the gasket opening 11, the connection cavity 32, the gap between the piston 2 and the connection cavity 32, and the through hole 321 are all in a conducting state. The gas is transmitted to the gas needle valve body 51, and the gas output is controlled through the gas needle valve body 51. Thus, the control component for converting the gas delivery is the gas needle valve body 51, which is convenient for inflation operation. When the nozzle is not installed on the gas valve, the internal gas is controlled for output through the piston 2 inside the gas valve, reducing the probability of gas being transported to the outside by external touch in unnecessary situations; after the gas valve is connected to the nozzle, the piston is in an open state all the time, and the gas delivery is controlled by the gas needle valve body instead. This avoids the need for multiple components to be opened or closed simultaneously, improving the stability of the operation;

[0065] The air needle valve body 51 includes an air needle 511 movably connected to the air nozzle housing 4, a contact piston 512 fixedly arranged below the air needle 511, and a second telescopic part 513 arranged at the lower end of the contact piston 512; one side of the second telescopic part 513 away from the contact piston 512 abuts against the thimble assembly 52; an air passage 514 is arranged inside the air needle 511, and one end of the air passage 514 is blocked by the air nozzle housing 4. The upper end surface of the contact piston 512 abuts against the lower end surface of the air nozzle housing 4. The second telescopic part 513 is an elastic component such as a compression spring or a spring piece that can be compressed under force and expand when the pressure is released. Specifically, a compression spring is used as the second telescopic part 513 in this technical solution. Through the force exerted by the second telescopic part 513, the upper end surface of the contact piston 512 continuously abuts against the lower end surface of the thimble assembly 52, so as to achieve the effect of airtightness inside the thimble assembly 52. At the same time, in cooperation with one end of the air passage 514 being blocked by the air nozzle housing 4, the air passage 514 inside the air needle 511 is in a non-conductive state, avoiding the occurrence of gas leakage due to the connection between the air passage 514 and the inside of the thimble assembly 52. In this technical solution, by setting multiple airtight places, the storage stability of gas is improved, thereby improving the stability of the operation; when gas needs to be transmitted to the outside, press the air needle 511 so that the air passage 514 is in a non-blocked state and the contact piston 512 and the air nozzle housing 4 are in a non-contact state, so that the air passage 514 and the thimble assembly 52 are in a conductive state, so as to realize the transmission of gas along the thimble assembly 52 and the air passage 514 to the outside for inflation operation. This control method is simple, and it is relatively easy to realize the transmission of gas or not, improving the stability of the operation, avoiding the problem of output in unnecessary situations, and improving the safety performance.

[0066] The air passage 514 includes a first passage 5141 vertically arranged in the air needle 511 and communicating with the outside, and a second passage 5142 horizontally arranged and communicating the first passage 5141 with the outside of the air needle 511. The second passage 5142 is blocked by the inner surface of the top end of the air nozzle housing 4. Along the axial direction of the air needle 511, the first passage 5141 is vertically arranged, the second passage 5142 is horizontally arranged and the middle part is connected to the first passage 5141. The first passage 5141 is arranged above the contact piston 512. The connection between the second passage 5142 and the thimble assembly 52 is controlled by blocking. This method of controlling gas output is simple and easy to implement. In cooperation with whether the contact piston 512 abuts against the air nozzle housing 4, the stability of controlling the transmission of gas or not is improved.

[0067] A resistance gasket 41 is provided inside the top of the gas nozzle housing 4. The resistance gasket 41 is provided with an axial hole 411. The axial hole 411 is sleeved on the gas needle 511, and the second channel 5142 is blocked by the inner surface of the axial hole 411. The upper end surface of the resistance piston 512 is in conflict with the lower end surface of the resistance gasket 41. The projection of the axial hole 411 along the axial direction of the gas nozzle housing 4 falls within the range of the upper end surface of the resistance piston 512. The gas needle 511 can move along the axial direction of the axial hole 411 to control whether the second channel 5142 is blocked from the inner surface of the axial hole 411 and whether the resistance piston 512 is in conflict with the resistance gasket 41, so as to control the output of gas and improve the stability of the operation.

[0068] The ejector assembly 52 includes an ejector block 521 fixedly disposed within the air nozzle housing 4. The ejector block 521 is provided with a housing chamber 522 for accommodating the air needle valve body 51 and a connecting hole 523 connecting the housing chamber 522 with the lower end space of the ejector block 521. The ejector block 521 is provided with a moving space for accommodating the air needle valve body 51 as it moves along the axial hole 411, and a housing chamber 522 for accommodating the second telescopic portion 513. The abutting piston 512, the ejector block 521, and the air nozzle housing 4 are coaxially arranged from the inside out. The connecting hole 523, the housing chamber 522, and the vent channel 514 are connected when the air needle valve body 51 is pressed downward. When the air needle valve body 51 is not pressed downward, the vent channel 514 is blocked by the axial hole 411, and only the housing chamber 522, the connecting hole 523, the housing chamber 522, and the lower end space of the ejector block 521 are connected. The upper end of the ejector block 521 contacts the lower end of the abutment gasket 41, maintaining airtightness between the accommodating chamber 522 and the abutment gasket 41. During use, the vertical end of the ejector block 521 continuously abuts the abutment block 21, keeping the gas valve open. This allows gas to flow through the gas nozzle, improving operational stability.

[0069] A sealing ring 42 is disposed within the gas nozzle housing 4. The upper end of the sealing ring 42 contacts the inflation needle assembly, while the lower end of the sealing ring 42 contacts the surface of the valve body. The sealing ring is compressed and deformed to fill the gap between the gas nozzle and the gas valve, preventing gas from leaking to the outside from the connection between the gas nozzle and the gas valve.

[0070] The valve housing 4 is provided with a connection end 40 for connection to the valve body. Specifically, the connection end 40 is provided on the inner surface of the lower end of the valve housing 4, and the connecting portion 12 is provided on the outer surface of the valve body 1. The connecting portion 12 and the connection end 40 can be provided with a quick-release structure such as a snap-fit structure or a threaded connection structure. In this technical solution, the connection portion 12 and the connection end 40 are specifically a threaded connection structure.

[0071] The gas storage cylinder body includes a gas filling bottle 6 or an alpine gas tank 7.

[0072] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as falling within the scope described in this specification.

[0073] The above-described embodiments only represent several implementation manners of the present utility model. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

[0074] The above has elaborated on the embodiments of a gas storage cylinder provided by the present utility model in detail. Specific examples are used herein to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the core idea of the present utility model. It should be noted that for those of ordinary skill in the technical field, without departing from the principle of the present utility model, several improvements and modifications can be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A gas cylinder comprising a gas cylinder body and a gas valve mounted on the gas cylinder body, wherein the gas valve comprises a valve body assembly and a piston assembly, and is characterized in that: The valve body assembly comprises a valve body (1) and an opening (10) provided on the valve body (1); the piston assembly comprises a piston (2) provided inside the valve body (1) and a transmission assembly (3) for causing the piston (2) to continuously contact the inner surface of the valve body (1); Along the axial direction of the valve body assembly, the projection of the opening (10) falls within the projection of the piston (2), and the projection of the piston (2) falls within the projection of the valve body (1).

2. The gas cylinder according to claim 1, characterized in that: The transmission assembly (3) comprises a first telescopic portion (31) that is axially telescopic relative to the valve body (1), and the first telescopic portion (31) is connected to a side of the piston (2) away from the valve body (1).

3. The gas cylinder according to claim 2, characterized in that: The transmission assembly (3) further comprises a connecting cavity (32) fixedly connected to the inner surface of the valve body (1), wherein the connecting cavity (32) is provided with a through hole (321) coaxially arranged with the opening (10); Along the axial direction of the piston (2), the piston (2) and the first telescopic portion (31) are sequentially arranged in the connecting cavity (32), and the side of the first telescopic portion (31) away from the piston (2) contacts the inner surface of the connecting cavity (32).

4. The gas cylinder according to claim 1, characterized in that: The valve body (1) is provided with a gasket (11), the gasket (11) is provided with a gasket opening (111) connected to the opening (10), and the piston (2) is in conflict with the gasket (11). Along the axial direction of the valve body assembly, the projection of the gasket opening (111) falls into the projection of the opening (10), and the projection of the gasket opening (111) falls into the projection of the piston (2).

5. The gas storage cylinder according to any one of claims 1 to 4, characterized in that: It also includes a gas nozzle, which is detachably mounted on the gas valve. The gas nozzle includes a gas nozzle housing (4) and an inflation needle assembly movably arranged in the gas nozzle housing (4).

6. The gas cylinder according to claim 5, characterized in that: The inflation needle assembly comprises an air needle valve body (51) movably connected to the air nozzle housing (4), and an ejector needle assembly (52) disposed in the air nozzle housing (4) and in contact with the lower end of the air needle valve body (51).

7. The gas cylinder according to claim 6, characterized in that: The air needle valve body (51) comprises an air needle (511) movably connected to the air nozzle housing (4), a contact piston (512) fixedly arranged below the air needle (511), and a second telescopic portion (513) arranged at the lower end of the contact piston (512); the second telescopic portion (513) contacts the ejector assembly (52) on a side away from the contact piston (512); a ventilation channel (514) is provided inside the air needle (511), and one end of the ventilation channel (514) is blocked by the air nozzle housing (4).

8. The gas cylinder according to claim 7, characterized in that: The ventilation channel (514) comprises a first channel (5141) vertically arranged in the air needle (511) and connected to the outside, and a second channel (5142) arranged transversely and connected to the first channel (5141) and the outside of the air needle (511), wherein the second channel (5142) is blocked by the inner surface of the top end of the air nozzle housing (4); A resisting gasket (41) is provided inside the top end of the air nozzle housing (4), and an axial hole (411) is provided on the resisting gasket (41). The axial hole (411) is sleeved on the air needle (511), and the second channel (5142) is blocked by the inner surface of the axial hole (411).

9. The gas cylinder according to claim 6, characterized in that: The ejector assembly (52) comprises an ejector block (521) fixedly arranged in the air nozzle housing (4); the ejector block (521) is provided with an accommodating cavity (522) for accommodating the air needle valve body (51), and a communicating hole (523) communicating the accommodating cavity (522) with the lower end space of the ejector block (521).

10. The gas storage cylinder according to claim 1, characterized in that: The gas storage bottle body comprises a gas filling bottle (6) or an alpine gas tank (7).

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