WO2021056660A1

WO2021056660A1 - Convertible inflation nozzle and air pump using inflation nozzle

Info

Publication number: WO2021056660A1
Application number: PCT/CN2019/113199
Authority: WO
Inventors: 任陈焱
Original assignee: 东莞市佳冠运动器材有限公司
Priority date: 2019-09-24
Filing date: 2019-10-25
Publication date: 2021-04-01
Also published as: CN110541804A

Abstract

Provided is a convertible inflation nozzle, comprising an air outlet tube (1) and a locking tube (2) connected to one end of said air outlet tube (1); a core tube (3) is slidably connected inside the outlet pipe (1), the core tube (3) and the outlet tube (1) being arranged coaxially; a spring (11) is connected between the core tube (3) and the outlet tube (1); on the inner wall of one end of the locking tube (2) away from the air outlet tube (1), a first internal thread (21) threadedly engaged with a US-American air pump and a second internal thread (22) threadedly engaged with a French air pump are arranged in sequence, from the outside to the inside; connected between the air outlet tube (1) and the locking tube (2) is a positioning assembly (4), which protrudes from the first internal thread (21) and the second internal thread (22) and which is used for positioning the core nozzle of the core tube (3); when the spring (11) is in its natural state, the core nozzle of the core tube (3) protrudes from the first internal thread (21). Also disclosed is an air pump using the inflation nozzle, comprising an inflation assembly (6), the inflatable assembly (6) being in communication with the air outlet pipe (1). The arrangement is such that the air pump enables common use of US-American and French nozzles, and is convenient for a user to switch flexibly according to actual requirements.

Description

Convertible pump and pump using the pump

Technical field

The present invention relates to the technical field of pumps, in particular to a pump with a switchable pump nozzle and the pump using the pump.

Background technique

As the concept of green sports is accepted by more and more people, more and more enthusiasts are participating in cycling. As a necessary equipment for cycling enthusiasts, portable pumps provide great convenience for cycling enthusiasts, that is, cyclists can refill the tires of bicycles (mountain bikes) at any time.

Among them, for bicycles in different regions, there are also differences in the valve structure. Among them, the American valve and the French valve are mainly used; the American valve is short but the end diameter is large, and the French valve is long but the end diameter is small. , Due to the difference in the structure of the air nozzle, this brings a lot of trouble to the user inflating.

Summary of the invention

In view of the above-mentioned shortcomings of the prior art, the first object of the present invention is to provide a switchable pump nozzle so that the user can flexibly switch the pump nozzle, which can be adapted to both American and French nozzles for inflation.

The first object of the present invention is achieved through the following technical solutions: a switchable pump nozzle, comprising an air outlet tube and a locking tube connected to one end of the air outlet tube, and a core tube is slidably connected to the inside of the air outlet tube. It is arranged coaxially with the air outlet tube, a spring is connected between the core tube and the air outlet tube, and the inner wall of one end of the locking tube away from the air outlet tube is successively provided with a first screw threaded fitting with an American air pump. An internal thread and a second internal thread that is matched with the French air nozzle. A core nozzle for positioning the core tube is connected between the air outlet tube and the locking tube, protruding from the first internal thread and protruding from the second internal thread. The positioning component at the internal thread, and in the natural state of the spring, the core nozzle of the core tube protrudes from the first internal thread.

Further, the positioning assembly includes a conversion sleeve sleeved between the air outlet tube and the locking tube; and further includes a ball abutting between the outer wall of the core tube and the inner wall of the conversion sleeve, and the ball is located between the air outlet tube and the locking tube, The inner wall of the conversion sleeve is provided with a positioning groove for the balls to move up and down, the outer wall of the core tube is provided with a first protrusion, and the height of the first protrusion is equal to the depth of the positioning groove; and the core tube When the core nozzle of the core tube protrudes from the first internal thread, the ball abuts on the side of the first protrusion away from the locking tube, and when the core nozzle of the core tube protrudes from the second internal thread, the ball Abutting on the side of the first protrusion close to the locking tube.

Further, one end of the core tube close to the air outlet tube is provided with a first cylinder slidably connected to the inner wall of the air outlet tube, and the inside of the first cylinder is respectively connected with the air outlet tube and the locking tube.

Further, the core tube is provided with a second protrusion at one end close to the locking tube, and the first protrusion is located between the first barrel and the second protrusion, and between the first barrel and the first protrusion There is a first gap, and there is a second gap between the first protrusion and the second protrusion.

Further, the first protrusion and the second protrusion respectively form a curved transition with the outer wall of the core tube.

Further, the inner wall of the locking tube is provided with a first sealing element, and the first sealing element is located between the first internal thread and the second internal thread.

Further, a second sealing member is respectively provided between the air outlet pipe and the conversion sleeve, and between the conversion sleeve and the locking tube.

In view of the above-mentioned shortcomings of the prior art, the second object of the present invention is to provide an inflator so as to be able to adapt to both American and French air nozzles for inflation.

The second object of the present invention is achieved through the following technical solutions: an inflator, including the above-mentioned switchable pump nozzle, and further including an inflatable component, and the inflatable component is in communication with the outlet pipe.

Further, the inflatable assembly includes a core tube and a sleeve slidably connected to the outer wall of the core tube, and the air outlet tube is arranged in the core tube and communicates with the inside of the core tube.

The beneficial effect of the present invention is that when the conversion pump nozzle pumps air to the American valve, the locking tube is screwed to the outer thread of the end of the American valve through the first internal thread. At this time, the spring is in a natural state and the core tube The core nozzle protrudes from the first internal thread and is aligned with the American gas nozzle. After that, the positioning component is used to fix the aligned position of the core nozzle of the core tube and the American gas nozzle so that the core nozzle will not move when the American gas nozzle is inflated ；

When the converted air nozzle pumps up the French air nozzle, firstly connect the locking tube to the external thread of the end of the French air nozzle through the second internal thread. At this time, the spring is in a compressed state, and the core nozzle of the core tube protrudes from the second internal thread. The second internal thread is aligned with the French air nozzle, and then the positioning assembly is used to fix the aligned position of the core nozzle of the core tube and the French air nozzle so that the core nozzle will not move when the French air nozzle is inflated;

So as to achieve the purpose of facilitating the user to flexibly change the pump nozzle, and being able to adapt to the American and French nozzles for inflation.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are merely of the present invention. For some embodiments, those of ordinary skill in the art can obtain other drawings based on these drawings without creative labor.

Figure 1 is a cross-sectional view of the first embodiment of the present invention;

Figure 2 is a cross-sectional view of the second embodiment of the present invention.

Reference signs: 1. Outlet tube; 11, spring; 2. locking tube; 21, first internal thread; 22, second internal thread; 23, first seal; 3. core tube; 31, first protrusion 32, the first cylinder; 33, the second protrusion; 4. the positioning component; 41, the conversion sleeve; 411, the positioning groove; 42, the ball; 5. the second seal; 6, the inflatable component; 61, the core tube ; 62. Sleeve.

detailed description

In order to make the technical problems, technical solutions, and beneficial effects to be solved by the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention.

It should be noted that when a component is referred to as being "fixed to" or "installed on" another component, it can be directly on the other component or indirectly on the other component. When a component is said to be "connected" to another component, it can be directly or indirectly connected to the other component.

It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top" , "Bottom", "Inner", "Outer" and other indications of the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the present invention and simplifying the description, but not indicating or implying the pointed device Or the element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, "plurality" means two or more than two, unless otherwise specifically defined.

Embodiment 1: A conversion pump nozzle, see Fig. 1, comprising an air outlet tube 1 and a locking tube 2 connected to one end of the air outlet tube 1. The air outlet tube 1 is slidably connected with a core tube 3, the core tube 3 and the The air outlet pipe 1 is coaxially arranged, a spring 11 is connected between the core tube 3 and the air outlet pipe 1, and the inner wall of one end of the locking tube 2 away from the air outlet pipe 1 is successively provided with threads of an American air pump from outside to inside. The matched first internal thread 21 and the second internal thread 22 matched with the French air nozzle, the core nozzle for positioning the core tube 3 is connected between the air outlet tube 1 and the locking tube 2 and protrudes from the first The internal thread 21 protrudes from the positioning component 4 at the second internal thread 22, and the core nozzle of the core tube 3 protrudes from the first internal thread 21 in the natural state of the spring 11.

When the converted air nozzle is inflating the American air nozzle, the locking tube 2 is screwed to the external thread of the end of the American air nozzle through the first internal thread 21. At this time, the spring 11 is in a natural state, and the core nozzle of the core tube 3 It protrudes from the first internal thread 21 and is aligned with the American gas nozzle, and then the positioning assembly 4 is used to fix the alignment position of the core nozzle of the core tube 3 with the American gas nozzle so that the core nozzle will not move when the American gas nozzle is inflated ；

When the conversion nozzle is inflating the French nozzle, the locking tube 2 is screwed to the external thread of the end of the French nozzle through the second internal thread 22. At this time, the spring 11 is in a compressed state, and the core nozzle of the core tube 3 It protrudes from the second internal thread 22 and is aligned with the French air nozzle, and then uses the positioning assembly 4 to fix the aligned position of the core nozzle of the core tube 3 with the French air nozzle so that the core nozzle will not move when the French air nozzle is inflated ；

Therefore, the purpose of facilitating the user to flexibly switch the pump, and being able to adapt to the American and French air nozzles for inflating, the conversion pump is beautiful, and the French air nozzle does not need to be replaced with other pumps.

The positioning assembly 4 includes a conversion sleeve 41 sleeved between the outlet tube 1 and the locking tube 2; also includes a ball 42 abutting between the outer wall of the core tube 3 and the inner wall of the conversion sleeve 41, and the ball 42 is located in the outlet tube Between 1 and the locking tube 2, the inner wall of the conversion sleeve 41 is provided with a positioning groove 411 for the balls 42 to move up and down, and the outer wall of the core tube 3 is provided with a first protrusion 31. The height of the first protrusion 31 is Is equal to the depth of the positioning groove 411; and when the core nozzle of the core tube 3 protrudes from the first internal thread 21, the ball 42 abuts on the side of the first protrusion 31 away from the locking tube 2, When the core nozzle of the core tube 3 protrudes from the second internal thread 22, the ball 42 abuts on the side of the first protrusion 31 close to the locking tube 2.

When the core nozzle of the positioning core tube 3 protrudes from the first internal thread 21, the ball 42 abuts on the side of the first protrusion 31 away from the locking tube 2, and the conversion sleeve 41 is rotated to make the positioning groove 411 and the upper and lower sides of the ball 42 The position is staggered, so that the ball 42 abuts between the inner wall of the conversion sleeve 41 and the outer wall of the core tube 3. At this time, the spring 11 is in a natural state, and the first protrusion 31 restricts the core tube 3 from moving to the inside of the air outlet tube 1, thereby ensuring Improved the stability of the alignment of the core tube 3 and the American gas nozzle to achieve positioning;

When the core nozzle of the positioning core tube 3 protrudes from the second internal thread 22, the conversion sleeve 41 is rotated so that the positioning groove 411 is located at the upper and lower positions of the ball 42 so that the ball 42 moves toward the inside of the positioning groove 411, and then the French air nozzle reaches The core contact nozzle compresses the spring 11, so that the ball 42 slides over the first protrusion 31 and abuts on the side of the first protrusion 31 close to the locking tube 2, and finally rotates the conversion sleeve 41, so that the positioning groove 411 and the ball 42 The upper and lower positions are staggered so that the ball 42 abuts between the inner wall of the conversion sleeve 41 and the outer wall of the core tube 3. At this time, the spring 11 is in a compressed state, and the first protrusion 31 restricts the core tube 3 from moving to the outside of the air outlet tube 1, thereby The stability of the alignment of the core tube 3 and the French gas nozzle is ensured, and positioning is realized.

One end of the core tube 3 close to the air outlet tube 1 is provided with a first cylinder 32 slidably connected to the inner wall of the air outlet tube 1, and the inside of the first cylinder 32 communicates with the air outlet tube 1 and the locking tube 2 respectively. The arrangement of the first cylinder 32 improves the smoothness and stability of the core tube 3 sliding on the inner wall of the air outlet tube 1.

The core tube 3 is provided with a second protrusion 33 at one end close to the locking tube 2, and the first protrusion 31 is located between the first barrel 32 and the second protrusion 33, and the first barrel 32 and the first protrusion 33 are located between the first barrel 32 and the second protrusion 33. There is a first gap between the protrusions 31, and there is a second gap between the first protrusions 31 and the second protrusions 33. The arrangement of the first gap and the second gap is convenient for accommodating the ball 42, and the second protrusion 33 can restrict the ball 42 from leaving the second gap and prevent the ball 42 from sliding out of the pump nozzle.

The first protrusion 31 and the second protrusion 33 respectively form a curved transition with the outer wall of the core tube 3. This facilitates the smooth movement of the balls 42 on the outer wall of the core tube 3, and improves the stability and smoothness of the pump nozzle.

The inner wall of the locking tube 2 is provided with a first sealing member 23, and the first sealing member 23 is located between the first internal thread 21 and the second internal thread 22. A second sealing member 5 is provided between the air outlet pipe 1 and the conversion sleeve 41, and between the conversion sleeve 41 and the locking tube 2 respectively. The arrangement of the first sealing member 23 and the second sealing member 5 improves the sealing performance of the pump nozzle, prevents gas leakage, and improves the inflation efficiency. In this embodiment, the first sealing member 23 and the second sealing member 5 are both sealing rings.

The second embodiment: an inflator, see FIG. 2, including the conversion nozzle in the first embodiment, and further including an inflator 6, and the inflator 6 is in communication with the air outlet tube 1. By installing the conversion pump nozzle, the pump realizes the dual-purpose effect of American and French nozzles, which is convenient for users to switch flexibly according to actual needs.

The inflatable assembly 6 includes a core tube 61 and a sleeve 62 slidably connected to the outer wall of the core tube 61. The air outlet tube 1 is arranged in the core tube 61 and communicates with the inside of the core tube 61. When in use, the user presses the outside air into the core barrel 61 by sliding the sleeve 62, and then the air is filled in through the air pump.

In this embodiment, the conversion sleeve 41 is threadedly connected to the core barrel 61 to realize a detachable connection, and the second sealing member 5 is installed between the core barrel 61 and the conversion sleeve 41.

The above-mentioned embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contribution as needed, but only in the claims of the present invention. The scope is protected by patent law.

Claims

A conversion pump nozzle, which is characterized in that it comprises an air outlet tube and a locking tube connected to one end of the air outlet tube. A core tube is slidably connected to the inside of the air outlet tube. The core tube and the air outlet tube are arranged coaxially, and the core tube A spring is connected between the tube and the air outlet tube, and the inner wall of one end of the locking tube away from the air outlet tube is sequentially provided with a first internal thread that is threaded with the American air pump and a second thread that is matched with the French air pump. Two internal threads, the core nozzle for positioning the core tube is connected between the air outlet tube and the locking tube to protrude from the first internal thread and the positioning component protruding from the second internal thread, and the spring is in a natural state , The core nozzle of the core tube protrudes from the first internal thread.
The conversion pump nozzle according to claim 1, wherein the positioning assembly includes a conversion sleeve sleeved between the air outlet tube and the locking tube; and further includes abutting between the outer wall of the core tube and the inner wall of the conversion sleeve The ball is located between the air outlet tube and the locking tube, the inner wall of the conversion sleeve is provided with a positioning groove for the ball to move up and down, the outer wall of the core tube is provided with a first protrusion, and the first protrusion The height is equal to the depth of the positioning groove; and when the core nozzle of the core tube protrudes from the first internal thread, the ball abuts on the side of the first protrusion away from the locking tube, and the core tube When the core nozzle protrudes from the second internal thread, the ball abuts on the side of the first protrusion close to the locking tube.
The conversion air pump according to claim 2, wherein the core tube is provided with a first cylinder slidably connected to the inner wall of the air outlet tube at one end of the core tube close to the air outlet tube, and the inside of the first cylinder body is respectively connected to the air outlet tube. And locking tube.
The conversion pump nozzle according to claim 3, characterized in that: the end of the core tube close to the locking tube is provided with a second protrusion, and the first protrusion is located on the first cylinder and the second protrusion. There is a first gap between the first cylinder and the first protrusion, and there is a second gap between the first protrusion and the second protrusion.
The conversion pump nozzle according to claim 4, wherein the first protrusion and the second protrusion respectively form a curved transition with the outer wall of the core tube.
The conversion pump nozzle according to claim 1, wherein the inner wall of the locking tube is provided with a first sealing element, and the first sealing element is located between the first internal thread and the second internal thread.
The conversion pump nozzle according to claim 2, characterized in that: second seals are respectively provided between the outlet tube and the conversion sleeve, and between the conversion sleeve and the locking tube.
An inflator, which is characterized in that it comprises the conversion inflator nozzle according to any one of claims 1-7; and further comprises an inflatable component, and the inflatable component is in communication with the air outlet pipe.
An inflator according to claim 8, characterized in that the inflatable component comprises a core tube and a sleeve slidably connected to the outer wall of the core tube, and the air outlet tube is arranged in the core tube and communicates with the inside of the core tube.