Patent Application
20100111719
1. Field of the Invention
The present invention relates to an air compressor, and more particularly to an air compressing device including a quick coupling device for quickly coupling and attaching and securing various parts or elements or attachments or facilities to an outlet tube of the air compressor and also for quickly disengaging the parts or elements or attachments or facilities from the air compressor and thus for allowing the parts or elements or attachments or facilities to be quickly and changeably attached and secured to the outlet tube of the air compressor.
2. Description of the Prior Art
Various kinds of typical air compressing devices have been developed by the applicant and comprise a cylinder housing, a piston slidably received in the cylinder housing, and a motor coupled or attached to the cylinder housing and coupled to the piston for moving the piston relative to the cylinder housing in a reciprocating action, in order to generate a pressurized air of a greater air pressure and a decreased flowing quantity.
For example, U.S. Pat. No. 6,846,162 to Chou, and U.S. Pat. No. 7,240,642 to Chou disclose two of the typical air compressing devices each also comprising a piston slidably received or engaged in a cylinder housing, and a motor attached to the cylinder housing and coupled to the piston for moving the piston relative to the cylinder housing in a reciprocating action, in order to generate a pressurized air of a greater air pressure and a decreased flowing quantity and for supplying the pressurized air to inflate various air facilities, such as tires, air beds, air cushions, hovercrafts, etc.
The cylinder housing normally includes an outlet tube having one or more outlet ports for selectively attaching and securing or coupling various parts or elements or attachments or facilities, such as the pressure gauges, the air nozzles, the relief valves, the safety valves or the like.
However, normally, the outlet ports include a predetermined coupling structure for attaching and securing the predetermined parts or elements or attachments or facilities, but may not be used for attaching and securing the other parts or elements or attachments or facilities, and the parts or elements or attachments or facilities may not be changed with each other or may not be changeably attached and secured to different outlet ports of the outlet tube of the cylinder housing.
The present invention has arisen to mitigate and/or obviate the afore-described disadvantages of the conventional air compressor devices.
The primary objective of the present invention is to provide an air compressing device including a quick coupling device for quickly coupling and attaching and securing various parts or elements or attachments or facilities to an outlet tube of the air compressor and also for quickly disengaging the parts or elements or attachments or facilities from the air compressor and thus for allowing the parts or elements or attachments or facilities to be quickly and changeably attached and secured to the outlet tube of the air compressor.
In accordance with one aspect of the invention, there is provided an air compressing device comprising a cylinder housing, a piston slidably engaged in the cylinder housing, a piston rod extended from the piston, and a motor attached to the cylinder housing and coupled to the piston rod with a coupling device for moving the piston relative to the cylinder housing in a reciprocating action, in order to generate a pressurized air, the cylinder housing includes an outlet tube extended outwardly therefrom and communicating with the cylinder housing for receiving the pressurized air from the cylinder housing, and includes an outlet port provided on the outlet tube and having a bore formed in the outlet port and communicating with the outlet tube for receiving the pressurized air from the outlet tube and the cylinder housing, and includes an anchor plate extended from the outlet port, and a facility includes a coupler for engaging with the outlet port and the anchor plate and for detachably securing the coupler and the facility to the outlet port of the outlet tube and for allowing the pressurized air to be supplied to the facility and for allowing the facility to be quickly and changeably attached and secured to the outlet tube of the cylinder housing.
The facility includes a mouth extended into the coupler for engaging into the bore of the outlet port of the outlet tube. The anchor plate includes a width greater than a height of the anchor plate for forming a rectangular structure, and includes two rounded corners oppositely formed thereon for allowing the coupler to be rotated relative to the anchor plate and to be coupled or secured to the outlet port of the outlet tube.
The coupler includes a base plate, and two arms extended from the base plate and spaced from each other for forming a space between the arms and for forming a C-shaped retaining space in the coupler and for detachably engaging with the anchor plate. The coupler includes an inwardly folded flange extended from each arm for partially closing the space and for hooking or engaging with the anchor plate and for easily and quickly and detachably locking or securing the facility and the coupler to the outlet port of the outlet tube.
The outlet port may be formed on a free end portion of the outlet tube and aligned with the outlet tube, or the outlet port is laterally extended from the outlet tube. The facility may be selected from a hose, a relief valve, a pressure gauge, or a cover, and the cover includes a knob extended therefrom for rotating the cover relative to the outlet port. The hose may be coupled to a nozzle for supplying the pressurized air to inflate to various air facilities, such as tires, air beds, air cushions, hovercrafts, etc.
The cylinder housing includes a valve seat disposed and located between the cylinder housing and the outlet tube, and a spring-biased check valve device disposed in the outlet tube and engaged with the valve seat for controlling the pressurized air to selectively flow into the outlet tube only and for preventing the pressurized air from flowing back form the outlet tube into the cylinder housing.
A receptacle may further be provided and includes a chamber formed therein for receiving the outlet tube and the cylinder housing and the motor and the facility, and the receptacle may include a lower receptacle member and an upper receptacle member each having one or more studs for detachably securing the receptacle members together.
Further objectives and advantages of the present invention will become apparent from a careful reading of the detailed description provided hereinbelow, with appropriate reference to the accompanying drawings.
Referring to the drawings, and initially to
An air compressing device 2 includes a cylinder housing 20 received and attached and secured in the chamber 11 of the receptacle 10, a piston 21 (
For example, the cylinder housing 20 includes a carrier plate 25 disposed and secured or attached or extended from cylinder housing 20 and arranged substantially parallel to the piston rod 22 for attaching or mounting the motor 23 and for coupling or securing the motor 23 to the cylinder housing 20. The cylinder housing 20 includes an outlet tube 26 extended outwardly therefrom and communicating with the cylinder housing 20 for receiving the pressurized air from the cylinder housing 20, and includes one or more (such as four) outlet ports 27 formed or provided or extended from the outlet tube 26 for coupling to various parts or elements or facilities 40-43 which will be discussed hereinafter.
As shown in
The cylinder housing 20 includes a valve seat 29 formed or provided in the upper portion of the cylinder housing 20 (
As best shown in
The coupler 50 each include a base plate 51, and two limbs or arms 52 extended from the base plate 51 and extended away from the facilities 40-43 and spaced from each other for forming a space 53 between the arms 52, and an inwardly folded hook or flange 54 extended from each arm 52 for partially closing the space 53 and for forming a C-shaped locking or retaining space 53. As shown in
The facilities 40-43 each include a mouth 55 extended therefrom and extended into the space 53 of the coupler 50 and disposed and located between the arms 52 and the flanges 54 for engaging into the bores 28 of the outlet ports 27 respectively when the base plate 51 is engaged with the outlet port 27 of the outlet tube 26 and/or when the anchor plate 31 is engaged into the space 53 of the coupler 50. The coupler 50 may then be rotated over the rounded corners 33, 34 of the anchor plate 31 and rotated counterclockwise (
As also shown in
In operation, as shown in
It is to be noted that the facilities 40-43 may be easily and quickly and changeably attached and secured to either of the outlet ports 27 of the outlet tube 26 for allowing the facilities 40-43 to be attached to the suitable outlet ports 27 at the suitable locations or positions when required. When it is required to change the place of the facilities 40-43 or when it is required to disengage the facilities 40-43 from the outlet ports 27 of the outlet tube 26, the facilities 40-43 may be rotated clockwise relative to the outlet port 27 and to allow the couplers 50 and the facilities 40-43 to be easily and quickly disengaged from the outlet ports 27 of the outlet tube 26.
Accordingly, the air compressing device includes a quick coupling device for quickly coupling and attaching and securing various parts or elements or attachments or facilities to an outlet tube of the air compressor and also for quickly disengaging the parts or elements or attachments or facilities from the air compressor and thus for allowing the parts or elements or attachments or facilities to be quickly and changeably attached and secured to the outlet tube of the air compressor.
Although this invention has been described with a certain degree of particularity, it is to be understood that the present disclosure has been made by way of example only and that numerous changes in the detailed construction and the combination and arrangement of parts may be resorted to without departing from the spirit and scope of the invention as hereinafter claimed.
