Golf club with tilt adjustable mechanism

1. A golf club with a tilt adjustable mechanism comprising a head, a retaining ring, a tightening ring, an adjusting sleeve, a hosel, a fixing sleeve, a coupler, and a shaft, wherein:

the head includes a neck having an adjusting hole, the adjusting hole including an end opening defined by a circumferential wall, a plurality of engaging grooves are defined in the circumferential wall defining the end opening, a bottom wall defining the adjusting hole includes a screw hole, a transverse screw hole extends through a lower portion of the neck and in communication with the adjusting hole;

the retaining ring includes a hole and is mounted around the hosel, at least one engaging block is formed on a circumferential wall defining the hole of the retaining ring, at least one engaging block is engaged in at least one of the engaging grooves of the neck;

the tightening ring is mounted around the hosel, the tightening ring is located between the retaining ring and the adjusting sleeve;

the adjusting sleeve includes a screw hole and the hosel includes an upper end and a lower end, a threaded section is formed on the hosel and adjacent to the upper end of the hosel, the adjusting sleeve is threadedly engaged around the threaded section of the hosel, allowing the adjusting sleeve to move along the threaded section of the hosel, a transverse screw hole is defined in the lower end of the hosel;

the fixing sleeve includes a hole with a first stepped section and a second stepped section, the fixing sleeve is securely mounted around the shaft by the first stepped portion, the fixing sleeve is securely mounted around the upper end of the hosel by the second stepped portion;

the coupler includes two threaded end portions and an intermediate portion between the threaded end portions, a transverse hole is defined in the intermediate portion of the coupler and aligned with the transverse screw hole of the hosel, one of the threaded end portions of the coupler is fixed in a lower end of the shaft, with the other threaded end portion extending beyond a bottom edge of the hosel;

the hosel is fixed to the lower end of the shaft, the lower end of the shaft is mounted in the adjusting hole of the neck of the body, with the other threaded end section of the coupler threadedly and securely engaged with the screw hole in the end wall defining the adjusting hole; and

a pin is threadedly engaged with the transverse screw hole of the neck and the transverse screw hole of the hosel and extended into the transverse hole of the coupler, such that the shaft is pivotable about the pin to allow adjustment in the tilt angle between the shaft and the head when said at least one engaging block of the retaining ring is disengaged from said engaging grooves of the neck.

2. The golf club with a tilt adjustable mechanism as claimed in claim 1 wherein the hosel is mounted around the lower end of the shaft and in contact with a circumferential wall defining the adjusting hole of the neck.

3. The golf club with a tilt adjustable mechanism as claimed in claim 1 wherein the hole of the retaining ring has a diameter the same as an outer diameter of the hosel.

4. The golf club with a tilt adjustable mechanism as claimed in claim 1 wherein the tightening ring is made of soft, resilient plastic material and the hosel is made of metal.

5. The golf club with a tilt adjustable mechanism as claimed in claim 1 wherein the adjusting sleeve presses against an upper end of the retaining ring via the tightening ring.

6. The golf club with a tilt adjustable mechanism as claimed in claim 1 wherein said at least one engaging block of the retaining ring is conic and each said engaging groove has a correspondingly shaped conic structure.

7. The golf club with a tilt adjustable mechanism as claimed in claim 1 wherein the adjusting hole is conic and tapers downward.