Slide module

A slide module, comprising:

• an outer rail, extending along an axial direction and having a first inner surface and a second inner surface corresponding to the first inner surface;
• a ball rail, including a first board and a second board corresponding to the first board, the first board having a first holding section and a first joint section, the second board having a second holding section and a second joint section, the first holding section and the second holding section being located in the outer rail, the first joint section and the second joint section extending out from the outer rail, wherein a plurality of first holes are formed on the first holding section and spacing apart from one another, and a plurality of second holes are formed on the second holding section and spacing apart from one another;
• a plurality of first balls, being rollably disposed in the first holes respectively, and each of the first balls being held between the first inner surface and the second holding section and distant from the second inner surface;
• and
• a plurality of second balls, being rollably disposed in the second holes respectively, and each of the second balls being held between the second inner surface and the first holding section and distant from the first inner surface;
• whereby the ball rail is capable of moving along the axial direction with respect to the outer rail through the first balls and the second balls.