Sleeve bracket assembly

1. A sleeve bracket assembly comprising:

a rail base including

two side boards disposed vertically at an interval and having

two sliding rails respectively protruding from inner surfaces of the side boards and facing each other;

a sliding channel formed between inner surfaces of the sliding rails;

an inserting notch formed between the sliding rails and communicating with the sliding channel;

a connecting seat connected with bottoms of the sliding rails and having a positioning recess formed between the sliding rails and the connecting seat;

a positioning board being an elastic elongated strip, mounted in the positioning recess of the rail base, and having an abutment portion having a curved cross section and protruding upwardly from a central portion of the positioning board and protruding into the sliding channel via the inserting notch;

multiple positioning mounts movably mounted in the sliding channel of the rail base, and being rotatable relative to the abutment portion and each positioning mount including

a sliding portion having an abutment surface formed on a bottom of the sliding portion; and

a socket portion integratedly formed on a top surface of the sliding portion, wherein

the positioning mounts are mounted in the sliding channel by the sliding portion, the abutment surfaces of the positioning mounts abut the abutment portion of the positioning board, and the sliding portions abut inner sides of the sliding rails.

2. The sleeve bracket assembly as claimed in claim 1 , wherein each sliding rail has a lower abutment surface defined at a lower side inside the sliding rail, the abutment portion is shaped as a bulge protruding in a central portion of the abutment portion and gradually inclined toward two sides of the bulge, and an uppermost point of the abutment portion is located above the lower abutment surface of the sliding rail.

3. The sleeve bracket assembly as claimed in claim 2 , wherein the positioning board has a blocking wall protruding downwardly from one end of the positioning board and abutting one end of the rail base.

4. The sleeve bracket assembly as claimed in claim 3 , wherein the connecting seat has a positioning hole formed adjacent one end of the connecting seat, the positioning board has a positioning protrusion formed on a bottom of the positioning board, located adjacent to the blocking wall and corresponding to the positioning hole in shape, and the positioning protrusion is engaged in the positioning hole.

5. The sleeve bracket assembly as claimed in claim 4 , wherein each positioning mount has a protrusion formed on the bottom of the sliding portion, and the abutment surface of each positioning mount is defined on a bottom surface of the protrusion of the positioning mount.

6. The sleeve bracket assembly as claimed in claim 1 , wherein the shape of the abutment surface of the positioning mount is flat, wave-shaped, or toothed.

7. The sleeve bracket assembly as claimed in claim 2 , wherein the shape of the abutment surface of the positioning mount is one of, flat, wave-shaped, or toothed.

8. The sleeve bracket assembly as claimed in claim 3 , wherein the shape of the abutment surface of the positioning mount is one of, flat, wave-shaped, or toothed.

9. The sleeve bracket assembly as claimed in claim 4 , wherein the shape of the abutment surface of the positioning mount is one of, flat, wave-shaped, or toothed.

10. The sleeve bracket assembly as claimed in claim 5 , wherein the shape of the abutment surface of the positioning mount is one of, flat, wave-shaped, or toothed.