Motion guide device and actuator

• US 10,415,640 B2
• Filed: 11/22/2016
• Issued: 09/17/2019
• Est. Priority Date: 11/30/2015
• Status: Active Grant

• Current Assignee: THK Company Limited
• Original Assignee: THK Company Limited
• Inventors: Homma, Kazuto, Yoshida, Akimasa, Yatsushiro, Daisuke, Iguchi, Takuya
• Primary Examiner(s): Plikington, James
• Application Number:
  US15/774,693
• Publication Number:
  US 20180355959A1
• Time in Patent Office: 1,029 Days
• CPC Class Codes: F16C 2208/82 Composites, i.e. fibre reinforced thermosetting resins
• CPC Class Codes: F16C 2226/40 with adhesive
• CPC Class Codes: F16C 2226/54 with rivets in general F16B19/00
• CPC Class Codes: F16C 2226/60 with threaded parts, e.g. bolt and nut connections in general F16B23/00 - F16B43/00
• CPC Class Codes: F16C 29/005 Guide rails or tracks for a linear bearing, i.e. adapted for movement of a carriage or bearing body there along
• CPC Class Codes: F16C 29/06 in which the rolling bodies circulate partly without carrying load
• CPC Class Codes: F16C 29/0602 Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly
• CPC Class Codes: F16C 29/0609 of the ends of the bearing body or carriage where the rolling elements change direction, e.g. end caps
• CPC Class Codes: F16C 29/063 with a bearing body, e.g. a carriage or part thereof, provided between the legs of a U-shaped guide rail or track
• CPC Class Codes: F16C 33/62 Selection of substances
• CPC Class Codes: F16C 35/00 Rigid support of bearing units; Housings, e.g. caps, covers F16C23/00 takes precedence
• CPC Class Codes: F16H 2025/2031 Actuator casings
• CPC Class Codes: F16H 25/22 with balls, rollers, or similar members between the co-operating parts; Elements essential to the use of such members
• CPC Class Codes: F16H 25/2228 the device for circulation forming a part of the screw member
• CPC Class Codes: F16H 25/2238 using ball spacers, i.e. spacers separating the balls, e.g. by forming a chain supporting the balls

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.

Claims

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 or the movable 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 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 (fiber reinforced plastics) jointed with the rolling part and the mounting part to form the track member or the movable member, and

the mounting part and the track body or the movable body each have a joint hole opened in a direction orthogonal to a lamination direction of FRP reinforced fiber sheets forming the track body or the movable body, and are jointed using jointing means placed in the joint holes.

2. The motion guide device according to claim 1, wherein the track body or the movable body has a stepped portion formed along a shape of the mounting part at a portion where the mounting part is to be jointed.

3. The motion guide device according to claim 1, wherein the jointing means is any one of or a combination of a bolt, a rivet, and an adhesive.

4. The motion guide device according to claim 1, wherein

the track member is formed as a member having a substantially U-shaped section, and

a plurality of the joint holes is formed so as to be opened in at least two directions, the at least two directions including a first direction facing a bottom surface side of the substantially U-shaped section, and a second direction facing a left and right surface sides of the substantially U-shaped section and orthogonal to the first direction.

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

6. 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 or the movable 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 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 (fiber reinforced plastics) jointed with the rolling part and the mounting part to form the track member or the movable member, and

the mounting part and the track body or the movable body each have a joint surface extending in a direction parallel to a lamination direction of FRP reinforced fiber sheets forming the track body or the movable body, and are jointed using jointing means applied to the joint surfaces.