Thin slide unit

Abstract

A thin slide unit where an endless circulation path for balls is constructed by combining two ball plates having track-like ball grooves formed in them, wherein the balls are smoothly circulated in the unit constructed only by directly joining the two ball plates without use of a guide plate, thereby smooth reciprocation of a slider relative to a guide rail is realized. The endless ball circulation path of the slider is constructed by setting the two ball plates, having track-like grooves formed in them, opposite to each other and directly joining the ball plates together. When edge sides of the two ball plates are placed opposite to each other, a load opening for causing the balls in the endless circulation path to be in contact with a rolling groove of the guide rail is formed and, also, a scooping-up section for lifting the balls from the rolling groove to guide them into the endless circulation path is formed.

Description

technical field [0001] The present invention relates to a sliding unit which can move unrestrictedly along the guide rail through a plurality of balls assembled on the guide rail, which is used on a sliding part such as a copy machine, a protective cover of a working machine, and a weight door, and particularly relates to a sliding unit by A thin sliding unit is assembled in which a plurality of press-formed metal plates are applied to form the infinite circulation path of the balls on the sliding member. Background technique [0002] Conventionally, as a linear guide device utilizing the rolling motion of balls, there has been known a device consisting of a guide rail in which rolling grooves of balls are formed in the longitudinal direction, and a guide rail with a plurality of balls mounted on the guide rail and having an infinite loop of the balls. The sliding member of the road is constituted, and the sliding member freely reciprocates along the guide rail while the bal...

AI Technical Summary

Problems solved by technology

However, when the guide claw is deformed as described above, since the guide claw contacts the side wall of the relief groove, there is a problem that the sliding resistance of the slider relative to the guide rail increases.

[0011] In addition, the relief groove is formed by roll forming at the same time as the ball rolling groove on the guide rail, but since the width of the relief groove corresponds to the thickness of the guide plate, it is extremely small, so the life of the roll forming die forming the relief groove is shortened. Extremely short, there is a problem that the manufacturing cost increases due to the replacement of the mold

In addition, since a relief groove is formed at the center of the ball rolling groove, the wall thickness of the guide rail becomes thinner at the portion where the relief groove is formed, which is one of the causes of a decrease in the rigidity of the guide rail.

[0012] Furthermore, the ball carriage sandwiches the guide plate between the two ball plates and assembles these plates with rivets. However, as mentioned above, since the tip of the guide claw is sharp, it is necessary to fully consider ensuring that the ball carriage is assembled. operator safety, which also makes operability less

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