Inflator and universal air nozzle connector thereof

Abstract

The present invention discloses an inflatable device and a universal gas nozzle connector thereof, wherein the universal gas nozzle connector comprises a housing, an operating handle pivotally connected to the top of the housing, a columnar plug body, a top shaft, a movable slider assembly and a rubber clamping member arranged in the internal cavity of the housing from top to bottom, and the side wall of the housing is also provided with a connecting pipe portion for introducing compressed gas into the internal cavity of the housing; a roller needle for clamping the top shaft is arranged between the top shaft and the movable slider assembly, and in the clamped state, the roller needle and the movable slider are in a line contact relationship. By setting the roller needle and the movable slider assembly in a line contact relationship, and adopting the movable slider assembly and the like to cooperate with each other, the present invention solves the problem of easy scratching and wear of the inner wall of the housing in the prior art, thereby greatly extending the service life of the product, and can avoid the problem of the roller needle being stuck, and the performance of the product is more stable and reliable.

Description

Technical Field

[0001] The present invention relates to an inflator, and in particular to an inflator and a universal air nozzle connector thereof. Background Technology

[0002] Tires are an indispensable part of transportation and are widely used all over the world. Accordingly, the inflatable device for inflating tires has also become one of the tools that cannot be separated from daily life. However, the existing inflatable devices have the problem of inconsistent standards for air nozzles, which are mainly divided into two types: American air nozzles and French air nozzles, and some are British air nozzles. In order to meet the needs of different consumers, or even the needs of the same consumer in different situations, there are inflatable connectors on the market that can be used for both American air nozzles and French air nozzles, such as the Chinese utility model patent with announcement number CN203809252U. However, the inflatable connectors in the prior art have various problems. Some products have high costs, some have poor reliability, some have poor user experience, and some have short service life. Therefore, it is necessary to make improvements. For example, in the design of the above patent, the piston that clamps the air nozzle is large, the thrust it bears at high pressure is very large, there is a large rebound force when the air nozzle is disassembled, and the operating experience is not good. In addition, due to the design of the air nozzle piston reset spring on both sides, the shell size is large, the cost is high and it is inconvenient to carry. In addition, the design of the above patent can only be used for both American and French gas nozzles, and cannot be used for British gas nozzles, so it is not a truly universal inflation connector.

[0003] It should be noted that the information disclosed in the above background technology section is only used to understand the background of this application, and therefore may include information that does not constitute prior art known to ordinary technicians in the field. SUMMARY OF THE INVENTION

[0004] In order to overcome the defects of the above-mentioned prior art, the present invention provides a universal gas nozzle connector with a long service life and stable and reliable performance, which includes a shell, an operating handle pivotally connected to the top of the shell, a columnar plug body, a top shaft, a movable slider assembly and a rubber clamping member arranged in the inner cavity of the shell from top to bottom, and the side wall of the shell is also provided with a pipe portion for introducing compressed gas into the inner cavity of the shell; a first reset component that can automatically reset the columnar plug body is provided between the columnar plug body and the top shaft, and a second reset component that can automatically reset the top shaft is provided on the movable slider assembly; the movable slider assembly is provided with a slider assembly through hole for the lower end of the top shaft to pass through, and the rubber clamping member is provided with a clamping member through hole for the lower end of the top shaft to pass through, and a clamping cavity with an opening facing downward; a roller needle for clamping the top shaft is provided between the top shaft and the movable slider assembly, and in the clamping state, the roller needle is in line contact with the inner wall of the movable slider; the operating handle can be switched between the locking and releasing working states by pivoting operation.

[0005] The present invention can also adopt the following optional / preferred solutions:

[0006] The movable slider assembly includes a cylindrical portion and two opposing needle roller abutting portions located inside the cylindrical portion, and the needle roller abutting portions are planes; the needle rollers are arranged in pairs on opposite sides of the top shaft, the axial direction of the needle rollers is perpendicular to the axial direction of the cylindrical portion, and a line contact relationship is formed when the needle rollers are in close contact with the needle roller abutting portions.

[0007] The movable slider assembly includes a cylindrical portion and two convex ear portions extending upward along the cylindrical portion, the two convex ear portions are arranged oppositely, and the opposing surfaces are both planes; the cylindrical plug body is provided with two notch portions, the two notch portions respectively match the two convex ear portions, and the two convex ear portions can enter or exit the two notch portions; the needle rollers are arranged in pairs on opposite sides of the top shaft, the axial direction of the needle rollers is perpendicular to the axial direction of the cylindrical portion, and a line contact relationship is formed when the needle rollers are in close contact with the needle roller abutting portions.

[0008] The bottom surface of the notch portion is an inclined surface, the top surface of the two convex ear portions is an inclined surface, and the slopes of the bottom surface of the notch portion and the top surface of the convex ear portion match each other so as to be able to fit together.

[0009] The movable slider assembly further includes a lining arranged inside the cylindrical portion, and the lining is cylindrical; the lining includes an upper lining section and a lower lining section, the outer diameter of the upper lining section is equal to the inner diameter of the cylindrical portion, the outer diameter of the lower lining section is smaller than the inner diameter of the cylindrical portion, and a receiving cavity for accommodating the second reset member is formed between the outer side of the lower lining section and the cylindrical portion; the upper end surface of the lining is a abutting inclined surface for jacking up the needle rollers, and the abutting inclined surface is higher on the inside and lower on the outside.

[0010] A seal is further provided between the cylindrical plug body and the housing for sealing.

[0011] The top shaft includes an upper top shaft section and a lower top shaft section, the diameter of the upper top shaft section is larger than the diameter of the lower top shaft section, and the upper top shaft section and the lower top shaft section are transitioned by a section of cone; the cylindrical plug body is provided with a top shaft receiving cavity opening downward along the axial direction, and the top shaft receiving cavity can at least accommodate the upper top shaft section; the inner diameter of the lining corresponds to the inner diameter of the top shaft receiving cavity.

[0012] A limiting connecting member is further provided between the cylindrical plug body and the movable slider to limit the reset height of the cylindrical plug body.

[0013] A end cover is further provided at the lower end of the housing, and a end cover through hole is provided on the bottom wall of the end cover; the end cover through hole corresponds to the clamping cavity.

[0014] The present invention also provides an inflation device, which includes an inflation device body and a nozzle connector, and the nozzle connector is the universal nozzle connector described in any one of the above.

[0015] One or more technical solutions provided in the embodiments of the present application have at least the following beneficial effects compared with the prior art:

[0016] By setting a line contact relationship between the needle roller and the movable slider and adopting technical features such as the movable slider assembly, the problem that the inner wall of the housing is easily scratched and worn in the prior art is solved, thereby greatly prolonging the service life of the product, and the problem that the needle roller is stuck can be avoided, and the performance of the product is more stable and reliable.

[0017] By adopting the cooperation of a notch portion and a convex ear portion and the like in the technical solution, the movement and cooperation between related components can be made more directional, so that they can cooperate more smoothly and the reliability can be improved.

[0018] By providing a top shaft accommodation cavity in the columnar plug body and cooperating with a structure such as an upper section and a lower section of the top shaft, the structure of the product can be made more compact, thereby reducing the volume, and the top shaft can be guided, and the stability and reliability of the product operation can be improved.

[0019] By providing a limit connecting member in the technical solution to limit the reset height of the columnar plug body, the relative position relationship between related components can be maintained within a predetermined range, which is convenient for operation and improves the user's operation experience.

[0020] By adding an additional end cover, the position of the rubber clamping member in the housing can be more reliably maintained, and at the same time, the strength of the corresponding part of the housing can be increased, so as to ensure stable and reliable clamping and the product is not easily damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is an exploded view of a universal nozzle connector of an embodiment;

[0022] Figure 2A is Figure 1 a schematic cross-sectional structure diagram of the universal nozzle connector in a locked state;

[0023] Figure 2B is Figure 1 a schematic cross-sectional structure diagram of the universal nozzle connector in a loosened state;

[0024] Figure 3A is a schematic cross-sectional structure diagram of the universal nozzle connector connected to an American nozzle and locking the operating handle;

[0025] Figure 3BIt is a schematic cross-sectional structure diagram when the universal nozzle connector is connected to the American nozzle but the operating handle is in the released state;

[0026] Figure 4A It is a schematic cross-sectional structure diagram when the universal nozzle connector is connected to the French nozzle and the operating handle is locked;

[0027] Figure 4B It is a schematic cross-sectional structure diagram when the universal nozzle connector is connected to the French nozzle but the operating handle is in the released state;

[0028] Figure 4C It is a schematic cross-sectional structure diagram when the universal nozzle connector is connected to the French nozzle and the operating handle is in a semi-locked and semi-released state (i.e., a state between the locked and released states);

[0029] Figure 5A It is a schematic cross-sectional structure diagram when the universal nozzle connector is connected to the British nozzle and the operating handle is locked;

[0030] Figure 5B It is a schematic cross-sectional structure diagram when the universal nozzle connector is connected to the British nozzle but the operating handle is in the released state. Detailed implementation manners

[0031] The following further describes the present invention in conjunction with the appended Figure 1 FIGs. 1 to 5 and specific implementation manners, where the same reference numerals represent the same components, unless otherwise specifically stated. It should be emphasized that the following description is merely exemplary and is not intended to limit the scope of the present invention and its applications.

[0032] After studying the products of the related prior art, the inventors of the present application found that the reasons for the poor reliability, easy jamming, and short service life of the universal nozzle connectors in the prior art are mainly that the top shaft is easily jammed or stuck, resulting in unsmooth operation or even inability to operate. In such a situation, the user will inevitably increase the operating force or perform unconventional operations, which will further accelerate the damage of the product. Further research found that the deeper reason for this problem is that the hardness of the steel balls and the top shaft used to hold the top shaft in the prior art is relatively high, while the hardness of the housing is relatively low and the wall is thin. In the case of a small contact area, the housing is easily scratched, damaged, or deformed and jammed, ultimately resulting in the occurrence of jamming or sticking. Therefore, the inventors conceived an improved solution for holding the top shaft that can increase the contact area of the housing to solve the above problems existing in the prior art.

[0033] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element. Additionally, the connection can be for a fixing function or for a coupling or communicating function.

[0034] It should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present invention.

[0035] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0036] Embodiment 1

[0037] As Figure 1 , Figure 2A and Figure 2B shown, the general gas nozzle connector of this embodiment includes a housing 1, an operating handle 2 pivotally connected to the top of the housing, a columnar plug 3, a top shaft 4, a movable slider assembly 5, and a rubber clamping member 6 sequentially arranged in the housing 1 from top to bottom; a connecting pipe portion 12 for introducing compressed gas into the internal cavity 11 of the housing 1 is further provided on the side wall of the housing 1. The operating handle 2 can be switched between a locked state and a released state through a pivoting operation. A first reset member 7 for automatically resetting the columnar plug 3 is provided between the columnar plug 3 and the top shaft 4. A second reset member 8 for automatically resetting the top shaft 4 is provided on the movable slider assembly 5. A needle roller 9 for clamping the top shaft 4 is further provided between the movable slider assembly 5 and the top shaft 4. In the clamped state, a line contact relationship exists between the needle roller 9 and the movable slider assembly 5.

[0038] When the rubber clamping member 6 is extruded from the top by the movable slider assembly 5, since both its bottom and outer peripheral wall are blocked by the housing 1, it will deform inward laterally, thereby producing the effect of clamping the gas nozzle.

[0039] The operating handle 2 includes a handle portion 21 and a pressing portion 22 located at one end of the handle portion 21. The pressing portion 22 is eccentrically pivoted to a pivoting portion 13 at the top of the housing 1 by a pivot 23, and the pressing portion 22 corresponds to the top end of the columnar plug body 3. Preferably, the pivot 23 is a pin. The other end of the handle portion 21 is tilted upward for easy operation. The pressing surface 221 of the pressing portion 22 has a smooth arc transition with the adjacent surface to facilitate state switching and reduce wear.

[0040] The columnar plug body 3 can reciprocate up and down within the housing 1, and the columnar plug body 3 is airtight with the inner wall of the housing 1. For example, it is sealed by sleeving a sealing member 38 such as an O-ring on the columnar plug body 3.

[0041] As Figure 1 、 Figure 2A and Figure 2B shown, the movable slider assembly 5 includes a columnar portion 51, two convex ear portions 53 extending upward along the columnar portion 51, and a needle roller contact portion 52 located on the opposite sides of the two convex ear portions 53. The needle roller contact portion 52 is a flat surface. It should be noted that in other specific embodiments, the needle roller contact portion 52 can also be directly provided in pairs on the inner side of the columnar portion 51 without the need to provide the two convex ear portions 53, as long as the corresponding portions of the inner side of the columnar portion 51 in contact with the needle roller contact portion 52 are flat surfaces. In this embodiment, two notch portions 33 are provided at the lower end of the columnar plug body 3. The two notch portions 33 respectively match the two convex ear portions 53, and the two convex ear portions 53 can enter or exit the two notch portions 33. The needle rollers 9 are preferably round-headed needle rollers, or can also be flat-headed needle rollers, and are provided in pairs on opposite sides of the top shaft 4. The axial direction of the needle rollers 9 is perpendicular to the axial direction of the columnar portion 51. When the needle rollers 9 are in close contact with the needle roller contact portion 52, a line contact relationship is formed between the two. In this structure, because the contact between the needle roller contact portion 52 on the inner side of the columnar portion 51 and the needle rollers 9 is a line contact, it can withstand a large contact pressure without causing scratching or deformation on the inner side of the columnar portion 51. That is to say, when the needle rollers 9 provide sufficient clamping force to clamp the top shaft 4, it will not cause jamming or seizure, greatly improving the service life of the product. In addition, this structure can achieve a guiding and positioning effect by means of the cooperation between the two convex ear portions 53 and the two notch portions 33, thereby enhancing the stability and reliability of related components in relative motion. Moreover, the setting of the two notch portions 33 greatly facilitates the installation of the needle rollers 9 and the assembly of the overall product.

[0042] As Figure 2A 、 Figure 2BAs shown, the movable slider assembly 5 also includes a liner 55 disposed inside the column part 51. The liner 55 is cylindrical and includes an upper liner section 551 and a lower liner section 552. The outer diameter of the upper liner section 551 is equal to the inner diameter of the column part 51, and the outer diameter of the lower liner section 552 is smaller than the inner diameter of the column part 51. The outer side of the lower liner section 552 and the column part 51 form a receiving cavity 553 that can accommodate the second reset component 8. Through the dimensional matching relationship between the liner 55 and its adjacent components, the second reset component 8 can be confined to a specific space to avoid misalignment during the working state conversion process, thereby making the product work more stable and reliable. In addition, the upper end surface of the liner 55 is a contact slope 555 for lifting the needle roller 9, and the contact slope 555 is higher inside and lower outside. Compared with the case where the top end is a plane, this method is more conducive to the reset of the needle roller 9.

[0043] If Figure 1 、 Figure 2A 、 Figure 2B As shown in , the top shaft 4 includes a top shaft upper section 41 and a top shaft lower section 42. The diameter of the top shaft upper section 41 is larger than the diameter of the top shaft lower section 42. A cone transition is formed between the top shaft upper section 41 and the top shaft lower section 42. The columnar plug body 3 is axially provided with a top shaft accommodating cavity 31 opening downward. The top shaft accommodating cavity 31 can at least accommodate the top shaft upper section 41. The inner diameter of the lining 55 corresponds to the inner diameter of the top shaft accommodating cavity 31. The first reset component 7 is located in the top shaft accommodating cavity 31, and its two ends abut against the bottom of the top shaft accommodating cavity 31 and the upper end surface of the top shaft 4, respectively. In this way, the top shaft upper section 41 can be guided and limited to avoid deviation when moving up and down, thereby increasing the stability and reliability of the product. The first reset component 7 and the second reset component 8 are preferably springs, and may also be replaced by other suitable elastic bodies such as shrapnel. When the second reset component 8 is a spring, a spring guide column 37 is further provided on the bottom wall of the top shaft accommodating cavity 31, and the top shaft upper section 41 is provided with a reset component accommodating cavity 411 with an opening facing upwards. The guiding effect of the spring guide column 37 and the limiting effect of the reset component accommodating cavity 411 cooperate with each other to ensure the direction of the spring expansion and contraction deformation, so that it can work reliably and smoothly.

[0044] If Figure 1 、 Figure 2A 、 Figure 2BAs shown, a end cap 10 is also provided at the lower end of the housing 1. A through hole 101 is provided on the bottom wall of the end cap 10. A clamping cavity 61 with a downward opening is provided at the lower section of the rubber clamping member 6. The through hole 101 of the end cap corresponds to the clamping cavity 61, so that the nozzle can be smoothly inserted and removed. In addition, the bottom wall of the end cap around the through hole 101 can provide a supporting effect for the contact part at the bottom end of the rubber clamping member 6. By adding an additional end cap 10, the position of the rubber clamping member 6 in the housing 1 can be more reliably maintained. At the same time, the strength of the lower part of the housing 1 can be increased, which can not only ensure stable and reliable clamping, but also make the product not easily damaged.

[0045] The mutually contacting ends of the cylindrical part 51 and the rubber clamping member 6 can both be flat surfaces, or can be mutually matching concave-convex mating surfaces. For example Figure 2A 、 Figure 2B as shown, a groove is provided at the lower part of the cylindrical part 51, and a boss matching the groove is provided at the top end of the rubber clamping member, or the positions of the groove and the boss are interchanged. Such a mating structure can make the operation more reliable and smoother.

[0046] The following specifically describes the mutual cooperation relationship of the main components of the universal nozzle connector when connecting different nozzles and in different states with reference to the accompanying drawings as follows:

[0047] As Figure 3A shown, it is a schematic cross-sectional structure diagram of the universal nozzle connector connected to an American nozzle and in a locked state. At this time, the pressing part 21 of the operating handle 2 presses the top surface of the columnar plug 3 to press against the movable slider assembly 5, and presses down the top shaft 4 through the mutual cooperation of the columnar plug 3, the movable slider assembly 5 and the needle roller 9. At this time, the needle roller 9 moves closer to the middle under the combined action of the columnar plug 3 and the movable slider assembly 5, so as to clamp the upper section 41 of the top shaft. The movable slider assembly 5 presses against the rubber clamping member 6 under the action of the pressing part 21, causing the rubber clamping member 6 to deform in the radial direction, and then clamping the American nozzle and the lower section 42 of the top shaft. The end of the lower section 42 of the top shaft pushes open the valve core of the American nozzle, so that inflation can be carried out for tires and the like. As Figure 3BAs shown, it is a schematic cross-sectional structure diagram when the universal nozzle connector is connected to the American nozzle but in a loose state. At this time, the columnar plug body 3 and the top shaft 4 are reset under the action of the first reset component 7 and the second reset component 8 respectively, and the movable slider assembly 5 is reset under the action of the rubber clamping member 6. Under the thrust of the second reset component 8 and the self-gravity of the needle roller 9, the needle roller 9 naturally slides outwards, thus releasing the top shaft 4, enabling the top shaft 4 to be reset, and the rubber clamping member 6 also returns to its natural state, thus releasing the American nozzle and the lower section 42 of the top shaft. At this time, the American nozzle can be conveniently removed.

[0048] As Figure 4A shown, it is a schematic cross-sectional structure diagram when the universal nozzle connector is connected to the French nozzle and in a locked state. At this time, after the French nozzle is inserted, it pushes open the top shaft 4. Since the lower section 42 of the top shaft is thinner, the needle roller 9 does not apply a clamping force to the lower section 42 of the top shaft. The pressing portion 21 of the operating handle 2 presses the top end surface of the columnar plug body 3 to press against the movable slider assembly 5, and presses down the top shaft 4 through the mutual cooperation of the columnar plug body 3, the movable slider assembly 5 and the needle roller 9. The movable slider assembly 5 presses against the rubber clamping member 6 under the action of the pressing portion 21, causing the rubber clamping member 6 to deform in the radial direction, thereby clamping the French nozzle. The end of the lower section 42 of the top shaft pushes open the valve core of the French nozzle, so that inflation can be carried out for tires, etc. As Figure 4B shown, it is a schematic cross-sectional structure diagram when the universal nozzle connector is connected to the French nozzle but in a loose state. At this time, the columnar plug body 3 and the top shaft 4 are reset under the action of the first reset component 7 and the second reset component 8 respectively, and the movable slider assembly 5 is also reset under the action of the rubber clamping member 6. The rubber clamping member 6 returns to its natural state, thus releasing the French nozzle. At this time, the French nozzle can be conveniently removed. As Figure 4C shown, it is a schematic cross-sectional structure diagram when the universal nozzle connector is connected to the French nozzle and the operating handle 2 is in a semi-locked and semi-loose state (that is, in a certain state between the locked and loose states). At this time, the deformation amount of the rubber clamping member 6 is in an intermediate state, so the clamping force on the French nozzle is also in an intermediate state.

[0049] As Figure 5AAs shown in the figure, it is a schematic cross-sectional structure diagram when the universal nozzle connector is connected to the British nozzle and in the locked state. The pressing part 21 of the operating handle 2 presses the top surface of the columnar plug 3 to press against the movable slider assembly 5, and presses down the top shaft 4 through the mutual cooperation of the columnar plug 3, the movable slider assembly 5 and the needle roller 9. At this time, the needle roller 9 clamps the upper section 41 of the top shaft. The movable slider assembly 5 presses the rubber clamping member 6 under the action of the pressing part 21, causing the rubber clamping member 6 to deform in the radial direction, thereby clamping the British nozzle. The end of the lower section 42 of the top shaft opens the valve core of the British nozzle, so that inflation can be carried out for tires and the like. As Figure 3B As shown in the figure, it is a schematic cross-sectional structure diagram when the universal nozzle connector is connected to the British nozzle but in the loosened state. At this time, the columnar plug 3 and the top shaft 4 are reset under the action of the first reset member 7 and the second reset member 8 respectively. The movable slider assembly 5 is reset under the action of the rubber clamping member 6. The needle roller 9 releases the top shaft 4, and the rubber clamping member 6 returns to its natural state, thereby releasing the British nozzle. At this time, the British nozzle can be conveniently removed.

[0050] It should be noted that when the universal nozzle connector is connected to the British nozzle for inflation, the installation direction of the rubber clamping member 6 in the housing 1 is different from that when the universal nozzle connector is connected to the American nozzle / French nozzle for inflation. It is upside down, that is, the clamping cavity 61 is upward when connected to the British nozzle for inflation, as Figure 5A and Figure 5B shown.

[0051] Embodiment 2

[0052] The main difference between this embodiment and the previous Embodiment 1 is that the bottom surface of the notch portion 33 is an inclined surface, and the top surfaces of the two lug portions 53 are inclined surfaces. The slopes of the bottom surface of the notch portion 33 and the top surfaces of the lug portions 53 match, so that they can fit better with each other.

[0053] Embodiment 3

[0054] The main difference between this embodiment and the previous Embodiment 1 or 2 is that a limit connecting member is further provided between the columnar plug 3 and the movable slider assembly 5 to limit the reset height of the columnar plug 3. In this way, it is convenient for the user to perform subsequent state conversion operations and improves the user's operation experience. As Figure 1As shown, the columnar plug body 3 is provided with a first limiting member mounting hole 36 for mounting the limiting connecting member, and the movable slider assembly 5 is provided with a second limiting member mounting hole 56 for mounting the limiting connecting member. After the limiting connecting member is mounted through the first limiting member mounting hole 36 and the second limiting member mounting hole 56, the relative position between the movable slider assembly 5 and the columnar plug body 3 can be restricted. For example, it can be restricted by the size of the second limiting member mounting hole 56, so as to realize the restriction of the reset height of the columnar plug body 3.

[0055] Embodiment 4

[0056] The inflation device of this embodiment is used for inflating tires and the like. It includes an inflation device body and a nozzle connector. The nozzle connector is the universal nozzle connector described in any of the previous embodiments and is connected to the inflation device body through the connecting pipe portion.

[0057] The above content is a further detailed description of the present invention in combination with specific / preferred embodiments. It cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, without departing from the concept of the present invention, several alternatives or modifications can be made to these described embodiments, and these alternative or modified forms should all be regarded as belonging to the protection scope of the present invention. In the description of this specification, the description with reference to terms such as "an embodiment", "some embodiments", "preferred embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. Without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples. Although the embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions, and alterations can be made herein without departing from the scope of protection of the patent application.

Claims

1. A universal gas nozzle connector, characterized in that: The utility model comprises a housing, an operating handle pivotally connected to the top of the housing, a columnar plug body, a top shaft, a movable slider assembly and a rubber clamping member arranged in the inner cavity of the housing from top to bottom, and a connecting pipe part for introducing compressed gas into the inner cavity of the housing is also arranged on the side wall of the housing; A first reset component capable of automatically resetting the cylindrical plug body is provided between the cylindrical plug body and the top shaft, and a second reset component capable of automatically resetting the top shaft is provided on the movable slider assembly; The movable slider assembly is provided with a slider assembly through hole for the lower end of the top shaft to pass through, and the rubber clamping piece is provided with a clamping piece through hole for the lower end of the top shaft to pass through, and is provided with a clamping cavity with an opening facing downward; A roller needle for clamping the top shaft is provided between the top shaft and the movable slider assembly. In the clamped state, the roller needle is in line contact with the inner wall of the movable slider assembly. The operating handle can be switched between the locking and releasing working states by pivoting operation; The movable slider assembly includes a columnar portion and two roller needle abutment portions facing each other located inside the columnar portion, and the roller needle abutment portions are planes; The needle rollers are arranged in pairs on opposite sides of the top shaft, the axial direction of the needle rollers is perpendicular to the axial direction of the column part, and when the needle rollers are in close contact with the needle roller contact part, a line contact relationship is formed; The movable slider assembly comprises a column portion and two lug portions extending upwardly from the column portion, wherein the two lug portions are arranged facing each other, and the facing surfaces are both planes; The columnar plug body is provided with two notch portions, and the two notch portions are matched with the two lug portions respectively, and the two lug portions can enter or exit the two notch portions.

2. The universal gas nozzle connector according to claim 1, characterized in that: The bottom surface of the notch is an inclined surface, and the top surfaces of the two lugs are inclined surfaces. The inclinations of the bottom surface of the notch and the top surfaces of the lugs match, so that they can fit each other.

3. The universal gas nozzle connector according to any one of claims 1 to 2, characterized in that: The movable slider assembly further includes an inner liner disposed in the column portion, wherein the inner liner is cylindrical; The liner comprises an upper liner section and a lower liner section, the outer diameter of the upper liner section is equal to the inner diameter of the column part, the outer diameter of the lower liner section is smaller than the inner diameter of the column part, and an accommodating cavity for accommodating the second reset component is formed between the outer side of the lower liner section and the column part; The upper end surface of the lining is a contact slope for lifting the needle roller, and the contact slope is high inside and low outside.

4. The universal gas nozzle connector according to claim 3, characterized in that: A sealing member is also provided between the columnar plug body and the housing for sealing.

5. The universal gas nozzle connector according to claim 3, characterized in that: The top shaft comprises an upper section and a lower section, the diameter of the upper section is larger than the diameter of the lower section, and a cone is provided between the upper section and the lower section; The cylindrical plug body is provided with a top shaft accommodating cavity opening downward along the axial direction, and the top shaft accommodating cavity can at least accommodate the top shaft upper section; The inner diameter of the liner corresponds to the inner diameter of the top shaft accommodating cavity.

6. The universal gas nozzle connector according to claim 3, characterized in that: A limiting connection piece is also provided between the cylindrical plug body and the movable slide block to limit the reset height of the cylindrical plug body.

7. The universal gas nozzle connector according to any one of claims 1 to 2, characterized in that: The lower end of the shell is also provided with an end cover, and the bottom wall of the end cover is provided with an end cover through hole; The end cover through hole corresponds to the clamping cavity.

8. An inflatable device, characterized in that: It comprises an inflator body and a gas nozzle connector, wherein the gas nozzle connector is a universal gas nozzle connector as described in any one of claims 1 to 7, and is connected to the inflator body through the connecting pipe portion.

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