Patent Application
20230115823
The present invention relates to a nozzle adapter connected with an air inflator valve of a tire of a vehicle to inflate air into the tire, and more particularly to connect with and remove from a Presta valve at a high pressure quickly.
To inflate air into a tire of a vehicle, an inflation valve having a check valve is fixed on the tire, and a pressurized pump inflates the air, wherein the pressurized pump has the nozzle adapter to communicate with the inflation valve. When desiring to connect the nozzle adapter with the inflation valve, a fixing device of the nozzle adapter is switched so that the nozzle adapter is connected with the inflation valve, and the fixing device is locked so that the nozzle adapter engages with the inflation valve, thus removing a hand to inflate the air.
The fixing device is used in following three manners:
Furthermore, the nozzle adapter is operated manually to connect with the inflation valve, and it is required to operate the fixing device, thus having troublesome operation.
To overcome above-mentioned defects, the inventor invented a joint structure of an air valve disclosed in US 10,166,825 B2, wherein the nozzle adapter is connected with the inflation valve to inflate the air, and the inflation valve is inserted by a conduit of an outlet segment of the nozzle adapter to inflate the air easily. Thereafter, the nozzle adapter is removed after pressing a manual operation portion of a control element to have an easy operation, and multiple teeth engage with threads of the inflation valve securely at the high pressure. However, such a joint structure is merely applicable for Schrader valve instead of Presta valve.
The present invention has arisen to mitigate and/or obviate the afore-described disadvantages.
The primary object of the present invention is to provide a nozzle adapter for a Presta valve which is operated with one hand easily and conveniently to connect with the Presta valve, such that after inflating air, the nozzle adapter is removed from the Presta valve with one hand, and the Presta valve is inserted into an outlet of the nozzle adapter automatically, wherein the nozzle adapter is removed from the Presta valve by using a controlling means easily and conveniently.
Another object of the present invention is to provide a nozzle adapter for a Presta valve which is applied to inflate the air at a high pressure, wherein when an inflation pressure is excessive, the Presta valve is pushed outward by the air pressure, and two engaging portions of two control elements are pulled to a screwing portion of the Presta valve so that two engaging portions engage with a screwing portion of the Presta valve more forcefully, thus using the Presta valve to inflate the air at the high pressure appropriately.
To obtain above-mentioned aspect, a nozzle adapter for a Presta valve provided by the present invention contains: a connection seat, at least one control element, at least one returning element, a seal cover, and a controlling means.
The connection seat includes an imaginary axis line defined on a center of the connection seat, an inlet defined on a first end of the imaginary axis line, an outlet formed on a second end of the imaginary axis line, an air stop ring received in the outlet, a conduit defined between the inlet and the outlet, an engagement position defined in the conduit, a coupling slot defined on the connection seat, and a stopping means formed outside the coupling slot. The coupling slot has at least one controlling trench defined outside the conduit, the at least one controlling trench extends to the engagement position via the inlet, and a respective controlling trench has a rotatable portion extending to the outlet adjacent to the air stop ring.
The at least one control element is accommodated in the at least one controlling trench. A respective control element has a fixing shaft extending on a first end thereof and connected with the rotatable portion, such that the at least one control element swings along the fixing shaft arcuately, the respective control element has an engaging portion extending from a second end thereof and has a controlled portion. The engaging portion is toothed and extends out of the engagement position.
The at least one returning element is arranged on the at least one control element so that the engaging portion is pushed into the engagement position.
The seal cover is fixed outside the coupling slot of the connection seat, and an airtight space is defined in the coupling slot by mating with the stopping means.
The controlling means is mounted on a center of the connection seat opposite to the inlet and in the conduit of the airtight space to move with the controlled portion. The controlling means extends out of the connection seat and is switched manually, when the controlling means is switched manually, the controlled portion is moved so that the engaging portion of the respective control element moves outward away from the engagement position.
The nozzle adapter is applicable for the Presta valve, and the Presta valve includes an inlet portion, a screwing portion, and a neck portion. The Presta valve is inserted into the outlet, the neck portion is engaged matingly by the air stop ring of the Presta valve, and the screwing portion is engaged by the engaging portion at the engagement position. The screwing portion moves forward from the outlet to the inlet.
The present invention will be clearer from the following description when viewed together with the accompanying drawings, which show, for purpose of illustrations only, a preferred embodiment in accordance with the present invention.
With reference to
The connection seat 10 includes an imaginary axis line L1 defined on a center thereof, an inlet 11 defined on a first end of the imaginary axis line L1, and an outlet 12 formed on a second end of the imaginary axis line L1, an air stop ring 13 and a locking ring 13A which are received in the outlet 12. The air stop ring 13 is made of rubber and has a protrusion 131 formed on an inner wall thereof, the locking ring 13A has a first threaded portion 13B formed on an outer wall thereof, the connection seat 10 has a second threaded portion 121 formed on an inner wall of the outlet 12 thereof, such that the first threaded portion 13B of the locking ring 13A is screwed with the second threaded portion 121 of the outlet 12 so that the locking ring 13A is fixed on the air stop ring 13. The connection seat 10 includes two grooves 14 defined on the first end of the imaginary axis line L1, a third threaded portion 15 screwed with the cap 10A, and a fourth threaded portion 10B formed on the cap 10A, wherein the fourth threaded portion 10B of the cap 10A is screwed with the third threaded portion 15, a conduit 16 defined between the inlet 11 and the outlet 12, an engagement position 161 defined in the conduit 16, a coupling slot 17 defined on the connection seat 10, and a stopping means 18 formed outside the coupling slot 17, wherein the stopping means 18 is two O-shaped rings 181, and the two O-shaped rings 181 are engaged on the cap 10A of the connection seat 10. The coupling slot 17 has at least one controlling trench 19 defined outside the conduit 16. In this embodiment, two controlling trenches 19 extend to the engagement position 161 via the inlet 11, wherein a respective controlling trench 19 has a rotatable portion 191 extending to the outlet 12 adjacent to the air stop ring 13.
The lid 20 covers the coupling slot 17 of the connection seat 10 to close the two controlling trenches 19.
In this embodiment, two control elements 30 are accommodated in the two controlling trenches 19, wherein a respective control element 30 has a fixing shaft 31 extending on a first end thereof and connected with the rotatable portion 191, such that the control element 30 swings along the fixing shaft 31 arcuately. The respective control element 30 has an engaging portion 32 extending from a second end thereof and has a controlled portion 33, wherein the engaging portion 32 is toothed and extends out of the engagement position 161, and the engaging portion 32 has a tilted guide face 321 formed proximate to the outlet 12.
In this embodiment, the two returning elements 40 are two spring arranged on the two control elements 30 so that two tilted guide faces 321 of the two control elements 30 are pushed into the engagement position 161 by the two returning elements 40.
The seal cover 50 is fixed outside the coupling slot 17 of the connection seat 10, and an airtight space X is defined in the coupling slot 17 by mating with the stopping means 18. The seal cover 50 is fitted on an outer wall of the connection seat 10 and mates with the two O-shaped rings 181. Furthermore, the seal cover 50 includes an inlet tube 51 received in the airtight space X and communicate with the inlet 11 and the conduit 16, wherein the seal cover 50 further includes two slidable posts 52 mounted on an inner wall thereof, and a cylindrical actuation portion 53 is defined between the two slidable posts 52. The cylindrical actuation portion 53 has two confining sections 531 configured to drive the two controlled portions 33 of the two control elements 30 to move, and the slidable posts 52 are slidably received and slide in the two grooves 14 of the connection seat 10 and are limited by the cap 10A.
The controlling means 60 is mounted on a center of the connection seat 10 opposite to the inlet 11 and in the conduit 16 of the airtight space X to move with the controlled portion 33, wherein the controlling means 60 extends out of the connection seat 10 and is switched manually. When the controlling means 60 is switched manually, the controlled portion 33 is moved. In this embodiment, the controlling means 60 is to slide the seal cover 50 on the connection seat 10. When the seal cover 50 moves away from the outlet 12, the two confining sections 531 of the seal cover 50 push the two controlled portions 33 of the two control elements 30 outward so that two engaging portions 32 of the two control elements 30 move outward away from the engagement position 161, and the two returning elements 40 are pressed.
When inflating the air via the Presta valve 2 by using the nozzle adapter 1, as shown in
After inflating the air, as shown in
Thereby, the nozzle adapter for Presta valve has advantages as follows:
While various embodiments in accordance with the present invention have been shown and described, it is clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.
