Three-section rail
A three-section rail and ball technology, applied in the field of three-section rail, can solve the problems of increasing material consumption, manufacturing cost and self-weight of the slide rail, and achieve the effect of good mechanical properties and less material consumption
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Embodiment 1
[0031] refer to figure 2 As shown, a three-section rail includes a pair of outer rails 2 and a middle rail 1 arranged between the pair of outer rails 2. The middle rail 1 is composed of a web 101 and flange plates 102 at both ends to form an I-shaped section. The inner side of the outer rail 2 is provided with a boss 201 cooperating with the side of the middle rail 1 , and the load bearing ball 3 is arranged between the inner side of the flange plate 102 and the boss 201 . The inner side of the flange plate 102 and the boss 201 are provided with ball grooves that cooperate with the load bearing balls 3 . Ball cages 5 are respectively arranged between the load bearing balls 3 on both sides of the middle rail 1 . An avoidance groove 202 is opened in the middle of the boss 201 . The height of the outer rail 2 is equal to that of the middle rail 1, and the end faces are flush.
Embodiment 2
[0033] refer to image 3 As shown, a three-section rail includes a pair of outer rails 2 and a middle rail 1 arranged between the pair of outer rails 2. The middle rail 1 is composed of a web 101 and flange plates 102 at both ends to form an I-shaped section. The inner side of the outer rail 2 is provided with a boss 201 cooperating with the side of the middle rail 1 , and the load bearing ball 3 is arranged between the inner side of the flange plate 102 and the boss 201 . The inner side of the flange plate 102 and the boss 201 are provided with ball grooves that cooperate with the load bearing balls 3 . An avoidance groove 202 is opened in the middle of the boss 201 .
[0034] A pair of auxiliary balls 4 are respectively arranged between both sides of the web 101 and the boss 201 . Both sides of the web 101 and the boss 201 are provided with ball grooves that cooperate with the auxiliary balls 4 . Ball cages 5 are respectively arranged between the load bearing balls 3 and ...
Embodiment 3
[0037] As a preferred embodiment, refer to Figure 4 to Figure 7 As shown, a three-section rail includes a pair of outer rails 2 and a middle rail 1 arranged between the pair of outer rails 2. The middle rail 1 is composed of a web 101 and flange plates 102 at both ends to form an I-shaped section. The inner side of the outer rail 2 is provided with a boss 201 cooperating with the side of the middle rail 1 , and the load bearing ball 3 is arranged between the inner side of the flange plate 102 and the boss 201 . The inner side of the flange plate 102 and the boss 201 are provided with ball grooves that cooperate with the load bearing balls 3 . An avoidance groove 202 is opened in the middle of the boss 201 .
[0038] A pair of auxiliary balls 4 are respectively arranged between both sides of the web 101 and the boss 201 . Both sides of the web 101 and the boss 201 are provided with ball grooves that cooperate with the auxiliary balls 4 . Ball cages 5 are respectively arrang...
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