Patent Application
20060267302
1. Field of the Invention
The present invention relates to a quick release device, and more particularly to a quick release device for a hand controlled wheeled vehicle, such as a hand cart, stroller, golf cart and the like.
2. Description of the Related Art
A conventional hand cart in accordance with the prior art shown in
When a user presses a second side 13A of the elastic plate 1A as shown in
However, the elastic plate 1A is not made easily, thereby increasing costs of fabrication of the conventional hand cart.
The primary objective of the present invention is to provide a hand cart that can reduce its working costs and enhance its quality of production.
Another objective of the present invention is to provide a hand cart, wherein the locking member and the elastic member are made easily and conveniently, thereby decreasing costs of fabrication.
A further objective of the present invention is to provide a hand cart, wherein when the wheel axle of the wheel is inserted into the frame body of the wheel frame, the first section of the locking member is inserted into and locked in the locking groove of the wheel axle automatically by the elastic force of the elastic member, so that the wheel axle of the wheel is mounted on the frame body of the wheel frame easily and rapidly.
A further objective of the present invention is to provide a hand cart, wherein the first section of the locking member is detached from the locking groove of the wheel axle by pressing the press button, so that the wheel axle of the wheel is detached from the frame body of the wheel frame easily and rapidly.
Further benefits and advantages of the present invention will become apparent after a careful reading of the detailed description with appropriate reference to the accompanying drawings.
Referring to the drawings and initially to
The frame body 20 of the wheel frame 2 has a first side formed with a first through hole 26 communicating with the mounting hole 21 of the frame body 20 and a second side formed with a second through hole 25 located in parallel with the first through hole 26. The first through hole 26 of the frame body 20 has length smaller than that of the second through hole 25 of the frame body 20. The second through hole 25 of the frame body 20 has an end face formed with a stepped receiving recess 27.
The end portion of the transverse rod 22 is formed with a fixing hole 23 communicating with the first through hole 26 of the frame body 20.
The wheel axle 31 of the wheel 3 has an end portion formed with an annular locking groove 32 communicating with the fixing hole 23 of the transverse rod 22.
The quick release device 4 includes a locking member 41, a press button 43, an elastic member 42, and a cover 44.
The locking member 41 is movably mounted on the frame body 20 of the wheel frame 2. The locking member 41 is substantially U-shaped and has a first section 412 extended through the first through hole 26 of the frame body 20 and the fixing hole 23 of the transverse rod 22 and detachably locked in the locking groove 32 of the wheel axle 31 to lock the wheel axle 31 of the wheel 3 and the end portion of the transverse rod 22 on the frame body 20 of the wheel frame 2 and a second section 410 movably mounted in the second through hole 25 of the frame body 20. The first section 412 of the locking member 41 has a length smaller than that of the second section 410 of the locking member 41.
The press button 43 is movably mounted on the frame body 20 of the wheel frame 2 and secured on a distal end of the second section 410 of the locking member 41 for moving the second section 410 of the locking member 41. The press button 43 is movably mounted in the receiving recess 27 of the frame body 20 and has an enlarged head 430 protruded outward from the frame body 20 of the wheel frame 2.
The elastic member 42 is mounted on the second section 410 of the locking member 41 and biased between the frame body 20 of the wheel frame 2 and the press button 43 to push the press button 43 to move outward relative to the frame body 20 of the wheel frame 2 and to push the locking member 41 to move toward the frame body 20 of the wheel frame 2. The elastic member 42 is mounted in the receiving recess 27 of the frame body 20.
The cover 44 is mounted on the frame body 20 of the wheel frame 2 to cover the locking member 41 and to cover the first through hole 26 and the second through hole 25 of the frame body 20.
In operation, referring to
Alternatively, referring to
Referring to
Referring to
Accordingly, when the wheel axle 31 of the wheel 3 is inserted into the frame body 20 of the wheel frame 2, the first section 412 of the locking member 41 is inserted into and locked in the locking groove 32 of the wheel axle 31 automatically by the elastic force of the elastic member 42, so that the wheel axle 31 of the wheel 3 is mounted on the frame body 20 of the wheel frame 2 easily and rapidly. In addition, the first section 412 of the locking member 41 is detached from the locking groove 32 of the wheel axle 31 by pressing the press button 43, so that the wheel axle 31 of the wheel 3 is detached from the frame body 20 of the wheel frame 2 easily and rapidly. Further, the locking member 41 and the elastic member 42 are made easily and conveniently, thereby decreasing costs of fabrication.
Although the invention has been explained in relation to its preferred embodiment(s) as mentioned above, it is to be understood that many other possible modifications and variations can be made without departing from the scope of the present invention. It is, therefore, contemplated that the appended claim or claims will cover such modifications and variations that fall within the true scope of the invention.
