Motion guide device and actuator

Patent metadata

Field	Value
Publication number	US-2019360570-A1
Application number	US-201916533070-A
Country	US
Kind code	A1
Filing date	Aug 6, 2019
Priority date	Nov 30, 2015
Publication date	Nov 28, 2019
Grant date	—

Abstract

A track member or a movable member constituting a motion guide device includes a rolling part formed of a metal material contacting with a plurality of rolling bodies and forming a rolling body rolling surface a, a mounting part formed of a metal material having a mounting hole for mounting an external member, and a track body or a movable body formed of FRP jointed with the rolling part and the mounting part and forming the track member or the movable member, and the mounting part and the track body or the movable body have joint holes, opened in a direction orthogonal to a lamination direction of FRP reinforced fiber sheets S forming the track body or the movable body at a time of the joint, and can be jointed using jointing means. An external member can be securely mounted to the motion guide device formed of FRP.

First claim

1 . A motion guide device comprising:
a track member; and a movable member mounted on the track member so as to freely move via a plurality of rolling bodies, wherein the track member comprises: a rolling part formed of a metal material contacting with the plurality of rolling bodies and forming a rolling body rolling surface; a mounting part having formed therein a mounting hole for mounting an external member; and a track body formed of FRP jointed with the rolling part and the mounting part and forming the track member, the track body has a joint hole opened in a direction orthogonal to a lamination direction of FRP reinforced fiber sheets forming the track body, and can be jointed with the mounting part using a jointing means placed in the joint hole, the track member is formed as a member having a substantially U-shaped section, a plurality of the joint holes are formed on a bottom surface side of the track member having the substantially U-shaped section and at appropriate intervals in a longitudinal direction of the track member, and a stepped machining portion where a diameter of a hole is changed is formed at a center portion of the opened joint hole, the mounting part is formed as a collar that has a flange portion on its upper side and that has formed therein the mounting hole for mounting the external member, and a screw groove is formed in an inner circumferential surface of the mounting hole formed in the collar.

2 . A motion guide device comprising:
a track member; and a movable member mounted on the track member so as to freely move via a plurality of rolling bodies, wherein the track member comprises: a rolling part formed of a metal material contacting with the plurality of rolling bodies and forming a rolling body rolling surface; a mounting part having formed therein a mounting hole for mounting an external member; and a track body formed of FRP jointed with the rolling part and the mounting part and forming the track member, the track body has a joint hole opened in a direction orthogonal to a lamination direction of FRP reinforced fiber sheets forming the track body, and can be jointed with the mounting part using a jointing means placed in the joint hole, the track member is formed as a member having a substantially U-shaped section, the joint hole is a bolt mounting hole a plurality of which are formed on a bottom surface side of the track member having the substantially U-shaped section and at appropriate intervals in a longitudinal direction of the track member, a groove-shaped portion as a stepped machining portion is formed on a bottom surface side at a forming place of the bolt mounting hole, and a reinforcing mounting part as the mounting part can be fitted into the groove-shaped portion.

3 . The motion guide device according to claim 2 , wherein one large-diameter joint hole is formed in a center portion and two small-diameter joint holes are formed on both sides of the large-diameter joint hole, in the reinforcing mounting part,
when the reinforcing mounting part is fitted into the groove-shaped portion, the bolt mounting hole as the joint hole formed in the track body and the large-diameter joint hole overlap each other, and a hole conducts, two bolt holes are formed in front and rear of a forming place of the bolt mounting hole as the joint hole formed in the track body, and when the reinforcing mounting part is fitted into the groove-shaped portion, the two small-diameter joint holes and the two bolt holes overlap each other, and holes conduct, by fastening the bolts to the small-diameter joint holes using the bolt holes formed in the front and the rear of the forming place of the bolt mounting hole as the joint hole formed in the track body, it is possible to fix the reinforcing mounting part to the groove-shaped portion of the track body, and by inserting the bolt to the large-diameter joint hole and the bolt mounting hole for fastening using the large-diameter joint hole formed in the reinforcing mounting part and the bolt mounting hole as the joint hole formed in the track body, it is possible to fix the track member to an object to be fixed.

4 . An actuator incorporating the motion guide device according to claim 1 .

5 . An actuator incorporating the motion guide device according to claim 2 .

6 . An actuator incorporating the motion guide device according to claim 3 .

Assignees

• Thk Co Ltd

Inventors

• Homma Kazuto
• Yoshida Akimasa
• Yatsushiro Daisuke
• Iguchi Takuya

Classifications

• F16H25/2238 Primary

  using ball spacers, i.e. spacers separating the balls, e.g. by forming a chain supporting the balls · CPC title

• F16C29/063 Primary

  with a bearing body, e.g. a carriage or part thereof, provided between the legs of a U-shaped guide rail or track · CPC title

• F16H25/22

  with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members · CPC title

• F16C29/0602 Primary

  Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly · CPC title

• F16H2025/2031

  Actuator casings · CPC title