Linear movement device

A technology of linear motion and moving body, applied in the direction of linear motion bearings, transmission devices, bearings, etc., can solve the problems of inability to easily locate the nut, and inability to easily adjust the parallelism, and achieve the effect of easy adjustment and easy assembly.

Inactive Publication Date: 2016-06-15
THK CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Because the outer cylinder is connected to the nut through the long hole provided on the housing through the connecting member, and in the state where the connecting member is accommodated in the long hole and faces the nut, the screw is screwed into the nut. The fitting holes provided on the connecting member and the threaded holes provided on the nut fix the connecting member on the nut, so it is not easy to position the nut relative to the outer cylinder, and it is not easy to assemble the nut , and cannot easily adjust the parallelism between the screw shaft and the outer cylinder screwed with the screw nut

Method used

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Embodiment Construction

[0049] Hereinafter, the structure and function of each part of the present invention will be described in detail with reference to the drawings. In addition, in the following description, the same code|symbol is attached|subjected to the same or a corresponding member or structure, and a repeated description is abbreviate|omitted.

[0050] figure 1 is a perspective view of the linear guide rail 1 of the present invention, figure 2 It is a partially cutaway perspective view of the linear guide rail 1 of the present invention.

[0051] Such as figure 1 and figure 2 As shown, the linear guide rail 1 as a kind of linear motion device has a hollow rail 2 so that a plurality of balls B can pass through (refer to Figure 6 ) and the moving block 3 installed in the manner of moving along the track 2, and the screw nut 4 arranged inside the hollow track 2 and screwed with the screw shaft 5 driving the moving block 3, and the track 2 is arranged on the base 9 On the two ends of t...

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Abstract

The invention provides a linear movement device. The linear movement device is characterized by comprising a hollow supporting body, a movable body and a nut. The movable body can move on the hollow supporting body through a plurality of rolling bodies. The nut is arranged in the hollow supporting body and combined with a screw shaft for driving the movable body in a threaded mode. The hollow supporting body is provided with a cut groove extending in the length direction, and the cut groove is formed in the surface opposite to the movable body. A protruding part arranged on the nut is fixed in a groove in the movable body through the cut groove. In this way, in the linear movement device, the nut can be easily positioned relative to the movable body and can be easily assembled, and the parallelism of the screw shaft combined with the nut in a threaded mode and the supporting body can be easily adjusted.

Description

technical field [0001] The present invention relates to a linear motion device, and more specifically, to a linear motion device provided with a hollow support body. Background technique [0002] A linear guide, which is a type of linear motion device, includes a hollow rail, a moving block mounted so as to be movable along the rail, and a nut arranged inside the hollow rail and screwed to a screw shaft that drives the moving block. . [0003] As an example of the above linear guide, for example, Patent Document 1 discloses the following linear guide. In this linear guide, the screw shaft and the nut are accommodated in a cylindrical case, and the outer cylinder is covered and fitted in the case freely, and the two ends of the case are supported by ball bearings. The screw shaft is supported, and the outer cylinder is configured to be movable by rotation of the screw shaft. Therefore, in Reference Document 1, it is possible to achieve downsizing of the entire linear guide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H25/20F16C29/04
Inventor 费珊珊
Owner THK CO LTD
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