# US 2015/0176643 A1 · Guiding body and motion-guiding device provided with same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2015/0176643 A1 - Document ID: US20150176643A1 - Status: Published application - Kind: A1 - Application number: 14/406,434 - Filed: 2013-09-06 - Published: 2015-06-25 - Earliest claimed: 2012-09-13 - Assignees: Thk Co., Ltd. - Applicants: Thk Co., Ltd. - Inventors: Kaoru Hoshide; Hiroaki Mochizuki; Hiroomi Kuribayashi; Akito Kaneko - Web page: https://patentgrep.com/patent/US20150176643A1 ## CPC - F16C 29/0611: {of the return passages, i.e. the passages where the rolling elements do not carry load} - F16C 21/00: Combinations of sliding-contact bearings with ball or roller bearings, for exclusively rotary movement (F16C17/24, F16C19/52 take precedence) - F16C 29/005: {Guide rails or tracks for a linear bearing, i.e. adapted for movement of a carriage or bearing body there along} - F16C 29/007: {Hybrid linear bearings, i.e. including more than one bearing type, e.g. sliding contact bearings as well as rolling contact bearings} - F16C 29/0604: {of the load bearing section} - F16C 29/0616: {for supporting load essentially in a single direction} - F16C 29/0623: {with balls} - 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} - A47B 2210/0032: Balls - A47B 2210/0035: cages therefor, e.g. for telescopic slides - F16C 2314/72: Drawers - F16C: SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS - A47B: TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE (furniture jointing F16B) ## Abstract A guide body can be prevented from being disengaged from a track rail even where the track rail is made of a low-rigidity material, thereby securing reliable movement along the track rail. The guide body includes: a large number of rolling elements that roll on a rolling surface formed along a structure, the guide body being movable relative to the structure; an endless circulation path through which the large number of rolling elements circulate; a load opening portion for allowing the large number of rolling elements in the endless circulation path to be held in contact with the rolling surface of the structure; and a guide portion formed on at least one side of the load opening portion so as to project toward the structure side with respect to projecting ends of the large number of rolling elements projecting from the load opening portion toward the structure side. ## Claims ### Claim 1 A guide body, comprising: a large number of rolling elements that roll on a rolling surface formed along a structure, the guide body being movable relative to the structure; an endless circulation path through which the large number of rolling elements circulate; a load opening portion for allowing the large number of rolling elements in the endless circulation path to be held in contact with the rolling surface of the structure; and a guide portion formed on at least one side of the load opening portion so as to project toward the structure side with respect to projecting ends of the large number of rolling elements projecting from the load opening portion toward the structure side. ### Claim 2 (depends on 1) The guide body according to claim 1, wherein the guide portion comprises a pair of guide portions formed so as to surround the load opening portion that is formed in the guide body therebetween, and wherein the structure is inserted into a receiving space formed between an imaginary plane connecting distal ends of the pair of guide portions to each other and the projecting ends of the large number of rolling elements projecting from the load opening portion toward the structure side. ### Claim 3 (depends on 2) The guide body according to claim 2, wherein the guide body comprises a pair of halves having the same shape, the pair of halves being coupled to each other, wherein each of the pair of halves comprises an endless rolling-element rolling groove, and wherein the endless circulation path for the large number of rolling elements and the load opening portion are formed by coupling the pair of halves so as to face each other. ### Claim 4 (depends on 1) The guide body according to claim 1, wherein the endless circulation path of the guide body comprises a load rolling surface for allowing the large number of rolling elements to roll under a load between the load rolling surface and the rolling surface of the structure, and wherein the load rolling surface is formed into a convex curved surface along a longitudinal direction of the load opening portion. ### Claim 5 (depends on 3) The guide body according to claim 3, wherein the pair of halves are fixed to each other at both end portions of each of the pair of halves in a moving direction thereof. ### Claim 6 (depends on 5) The guide body according to claim 5, wherein the pair of halves are fixed to each other in a snap-fit manner. ### Claim 7 A motion guide device, comprising: a track rail having a rolling surface for rolling elements; and a guide body assembled to the track rail through intermediation of a large number of the rolling elements in a freely movable manner, the guide body comprising: an endless circulation path through which the rolling elements circulate; a load opening portion for allowing the rolling elements in the endless circulation path to be held in contact with the rolling surface of the track rail; and a guide portion formed on at least one side of the load opening portion so as to project toward the track rail side with respect to projecting ends of the rolling elements projecting from the load opening portion toward the track rail side, the track rail comprising a swelling portion extending along a longitudinal direction of the track rail, the rolling surface for the rolling elements being formed on the swelling portion, the swelling portion having a side surface that faces the guide portion of the guide body.