The present invention relates to a quick-release assembly, and more particularly, to a safe and anti-loose quick-release assembly quick-release assembly with an anti-loose device.
The conventional quick-release assembly 9 for bicycles known to application is disclosed in
However, the nut 92 is easily get lost, and once the nut 92 is lost, the whole quick-release assembly has to be replaced with a new one. Besides, the lever 93 can be unexpectedly pivoted to cause dangerous results to the riders.
The present invention is intended to provide a safe and anti-loose quick-release assembly that is designed to eliminate the drawbacks mentioned above.
The present invention relates to a safe and anti-loose quick-release assembly and comprises a lever having a body with a cam-shaped portion and a pin is located in the cam-shaped portion. A rod has the first end thereof connected to the pin. The body has a bore defined through the wall thereof, and the pin has a room defined radially therein. A positioning unit is located in the bore and the room, wherein the positioning unit includes a push piece, a biasing piece and a resilient member. The push piece has an end extending beyond the bore. The biasing piece has a head and a shank, and the resilient member is mounted to the shank and biased between the head and the inner end of the room. The push piece contacts the head of the biasing piece. When the push piece protrudes beyond the bore, the lever cannot be pivoted. An end part is connected to the second end of the rod.
Preferably, the rod movably extends through a tube and the tube includes a seat connected to the first end thereof. Multiple holes are defined through the wall of the second end of the tube. A sleeve is mounted to the rod. Multiple plugs are mounted to the sleeve and each plug has a portion movably engaged with the hole corresponding thereto. Each plug has an inclined face defined in the underside of one end thereof. A cone-shaped portion is formed on the end part and inserted into the second end of the tube. The cone-shaped portion is engaged with the inclined face of each of the plugs. When the lever is pivoted and the cam-shape portion securely contacts against the seat, the rod and the cone-shaped portion are moved in Y-axis direction and toward the seat, the portions of the plugs move in X-axis direction to protrude beyond the holes respectively.
Preferably, a spring is mounted to the rod and biased between the seat and the sleeve.
Preferably, each of the plugs is an L-shaped plug.
Preferably, the sleeve includes multiple recesses defined axially in the outer periphery thereof. The plugs are movably located in the recesses.
Preferably, a resilient collar is mounted to the plugs to restrict the plugs from disengaging from the recesses of the sleeve.
Preferably, the cone-shaped portion of the end part includes multiple grooves defined axially in the outer periphery thereof. The plugs are movably located in the grooves. When the end part moves, the plugs are movable along the grooves.
The advantages of the present invention are that the positioning unit effectively prevents the lever from being unexpectedly pivoted. The plugs protrude beyond the holes of the tube when the cone-shaped portion of the end part moves toward the seat by pivoting the lever, such that the quick-release assembly is distinguished of its locked status.
The present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, a preferred embodiment in accordance with the present invention.
Referring to
A positioning unit 2 is located in the bore 13 and the room 130. The positioning unit 2 includes a push piece 21, a biasing piece 22 and a resilient member 23. The push piece 21 has an end movably extending beyond the bore 13. The biasing piece 22 has a head and a shank, and the resilient member 23 is mounted to the shank and biased between the head and the inner end of the room 130. The push piece 21 contacts the head of the biasing piece 22 as shown in
The rod 12 movably extends through a tube 4, and the tube 4 includes a seat 41 connected to the first end thereof. Multiple holes 42 are defined through the wall of the second end of the tube 4. A sleeve 53 is mounted to the rod 12 and the sleeve 53 includes multiple recesses 54 defined axially in the outer periphery thereof. A spring 6 is mounted to the rod 12 and biased between the seat 41 and the sleeve 53.
Multiple plugs 5 are mounted to the sleeve 53 and movably located in the recesses 54 as shown in
As shown in
As shown in
When the user wants to release the safe and anti-loose quick-release assembly “A”, he or she simply pushes the push piece 21 inward, and then pivots the lever 1 to shift the long axis of the cam-shape portion of the body 10 from the axial direction of the rod 12, the safe and anti-loose quick-release assembly “A” is released.
While we have shown and described the embodiment in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.
Number | Date | Country | Kind |
---|---|---|---|
106135083 | Oct 2017 | TW | national |
107203467 | Mar 2018 | TW | national |