Easily assembled swivel mount device

An easily assembled swivel mount device comprising:

• a housing including a tubular wall which surrounds an axis in an axial direction, and which has an open end that faces forwardly and that has an opening, said tubular wall having an inner tubular surface which defines an accommodation chamber that is in spatial communication with said opening, and an outer tubular surface which is radially opposite to said inner tubular surface, and which has entry-side and barrier-side regions relative to said open end, and a transition region interposed between said entry-side and barrier-side regions, said transition region having two bearing holes which extend through said inner tubular surface to be communicated with said accommodation chamber,
• said tubular wall having a peripheral shoulder abutment which extends radially from said barrier-side region and which faces forwardly,
• said outer tubular surface of said tubular wall having a peripheral ramp which extends to terminate at a peripheral blocking edge, said peripheral blocking edge cooperating with said outer tubular surface to form a peripheral blocking protrusion that confronts said peripheral shoulder abutment in the axial direction;
• a shaft having two opposite ends which are configured to be inserted into and journalled in said bearing holes, respectively;
• a swivel member having a mount end which is disposed outwardly of said open end, and a swivel ball body which is inserted through said opening into said accommodation chamber, and which has a through hole for insertion of said shaft;
• and
• a sleeve member having a leading abutment edge, and configured to be sleeved on said tubular wall, said sleeve member having an inner sleeve wall surface which confronts said outer tubular surface, and which has leading, middle and trailing regions that correspond to said barrier-side, transition and entry-side regions, respectively,
• said inner sleeve wall surface having an inner peripheral guideway which extends away from said leading abutment edge and which terminates at a peripheral blocked ledge that faces away from said leading abutment edge and that is configured such that, once said leading abutment edge is brought to abut against said peripheral shoulder abutment by virtue of sleeving of said sleeve member on said tubular wall from said entry-side region, said peripheral blocked ledge is brought to slip over said peripheral blocking edge so as to be retained behind said peripheral blocking protrusion.