Sealing device for linear guide apparatus

A linear guide apparatus comprising:

• an axially extending guide rail having a first rolling groove on its outer surface;
• a slider engaged with the guide rail and having a second rolling groove, rolling element return grooves and curved grooves, the second rolling groove confronting the first rolling groove, the rolling element return grooves being coupled to both end portions of the second rolling groove through the curved grooves, respectively;
• a plurality of rolling elements loaded into the slide to be made circulatable through the second rolling groove, the curved grooves, and the rolling element return grooves;
• and
• a sealing device fixed to the slider in slidable contact with the guide rail for sealing a clearance existing between the guide rail and the slider, the sealing device comprising:
• a lubricant-containing polymer member formed of a synthetic resin containing a lubricant, and having a contact portion contacting with the guide rail to surround the guide rail, both wing portions, and a connecting portion connecting the wing portions to be C-shaped substantially;
• and
• a first plate member fitted to the lubricant-containing polymer member, wherein the lubricant-containing polymer member is interposed between the slider and the first plate member, wherein the wing portions and the connecting portion form an opening so that the lubricant-containing polymer member is C-shaped substantially, and the lubricant-containing polymer member is deformable so that the opening shrinks.

A linear guide apparatus comprising:

• an axially extending guide rail having a first rolling groove on its outer surface;
• a slider engaged with the guide rail and having a second rolling groove, rolling element return grooves and curved grooves, the second rolling groove confronting the first rolling groove, the rolling element return grooves being coupled to both end portions of the second rolling groove through the curved grooves, respectively;
• a plurality of rolling elements loaded into the slide to be made circulatable through the second rolling groove, the curved grooves, and the rolling element return grooves;
• and
• a sealing device fixed to the slider in slidable contact with the guide rail for sealing a clearance existing between the guide rail and the slider, the sealing device comprising:
• a lubricant-containing polymer member formed of a synthetic resin containing a lubricant, and having a contact portion contacting with the guide rail to surround the guide rail, both wing portions, and a connecting portion connecting the wing portions to be C-shaped substantially;
• and
• a first plate member fitted to the lubricant-containing polymer member, wherein the lubricant-containing polymer member is interposed between the slider and the first plate member, wherein the lubricant-containing polymer member is deformable in a direction of moving the wing portions toward each other to press the contact portion against the guide rail.

A linear guide apparatus comprising:

• an axially extending guide rail having a first rolling groove on its outer surface;
• a slider engaged with the guide rail and having a second rolling groove, rolling element return grooves and curved grooves, the second rolling groove confronting the first rolling groove, the rolling element return grooves being coupled to both end portions of the second rolling groove through the curved grooves, respectively;
• a plurality of rolling elements loaded into the slide to be made circulatable through the second rolling groove, the curved grooves, and the rolling element return grooves;
• and
• a sealing device fixed to the slider in slidable contact with the guide rail for sealing a clearance existing between the guide rail and the slider, the sealing device comprising:
• a lubricant-containing polymer member formed of a synthetic resin containing a lubricant, and having a contact portion contacting with the guide rail to surround the guide rail, both wing portions, and a connecting portion connecting the wing portions to be C-shaped substantially;
• and
• a first plate member fitted to the lubricant-containing polymer member, wherein the lubricant-containing polymer member is interposed between the slider and the first plate member, wherein the lubricant-containing polymer member has an inner bottom face arc-shaped in the connecting portion which elastically protrudes toward the guide rail.

A linear guide apparatus comprising:

• an axially extending guide rail having a first rolling groove on its outer surface;
• a slider engaged with the guide rail and having a second rolling groove, rolling element return grooves and curved grooves, the second rolling groove confronting the first rolling groove, the rolling element return grooves being coupled to both end portions of the second rolling groove through the curved grooves, respectively;
• a plurality of rolling elements loaded into the slide to be made circulatable through the second rolling groove, the curved grooves, and the rolling element return grooves;
• and
• a sealing device fixed to the slider in slidable contact with the guide rail for sealing a clearance existing between the guide rail and the slider, the sealing device comprising:
• a lubricant-containing polymer member formed of a synthetic resin containing a lubricant, and having a contact portion contacting with the guide rail to surround the guide rail, both wing portions, and a connecting portion connecting the wing portions to be C-shaped substantially;
• and
• a first plate member fitted to the lubricant-containing polymer member, wherein the lubricant-containing polymer member is interposed between the slider and the first plate member, wherein the sealing device comprises a pair of first recesses formed in the respective wing portions for fixing the lubricant-containing polymer member to the slider and a pair of first cylindrical members inserted to the respective first recesses.

A linear guide apparatus comprising:

• an axially extending guide rail having a first rolling groove on its outer surface;
• a slider engaged with the guide rail and having a second rolling groove, rolling element return grooves and curved grooves, the second rolling groove confronting the first rolling groove, the rolling element return grooves being coupled to both end portions of the second rolling groove through the curved grooves, respectively;
• a plurality of rolling elements loaded into the slide to be made circulatable through the second rolling groove, the curved grooves, and the rolling element return grooves;
• and
• a sealing device fixed to the slider in slidable contact with the guide rail for sealing a clearance existing between the guide rail and the slider, the sealing device comprising:
• a lubricant-containing polymer member formed of a synthetic resin containing a lubricant, and having a contact portion contacting with the guide rail to surround the guide rail, both wing portions, and a connecting portion connecting the wing portions to be C-shaped substantially;
• and
• a first plate member fitted to the lubricant-containing polymer member, wherein the lubricant-containing polymer member is interposed between the slider and the first plate member, wherein the lubricant-containing polymer member has an elastic member to press against the guide rail.

A linear guide apparatus comprising:

• an axially extending guide rail having a first rolling groove on its outer surface;
• a slider engaged with the guide rail and having a second rolling groove, rolling element return grooves and curved grooves, the second rolling groove confronting the first rolling groove, the rolling element return grooves being coupled to both end portions of the second rolling groove through the curved grooves, respectively;
• a plurality of rolling elements loaded into the slide to be made circulatable through the second rolling groove, the curved grooves, and the rolling element return grooves;
• and
• a sealing device fixed to the slider in slidable contact with the guide rail for sealing a clearance existing between the guide rail and the slider, the sealing device comprising:
• a lubricant-containing polymer member formed of a synthetic resin containing a lubricant, and having a contact portion contacting with the guide rail to surround the guide rail, both wing portions, and a connecting portion connecting the wing portions to be C-shaped substantially;
• and
• a first plate member fitted to the lubricant-containing polymer member, wherein the lubricant-containing polymer member is interposed between the slider and the first plate member, wherein the lubricant-containing polymer member comprises a plurality of seal lips formed in the contact portion to contact the guide rail slidingly, the seal lips comprising a plurality of cutout portions arranged in a thickness direction of the sealing device.

A linear guide apparatus comprising:

• an axially extending guide rail having a first rolling groove on its outer surface;
• a slider engaged with the guide rail and having a second rolling groove, rolling element return grooves and curved grooves, the second rolling groove confronting the first rolling groove, the rolling element return grooves being coupled to both end portions of the second rolling groove through the curved grooves, respectively;
• a plurality of rolling elements loaded into the slider to be made circulatable through the second rolling groove, the curved grooves, and the rolling element return grooves;
• and
• a sealing device fixed to the slider in slidable contact with the guide rail for sealing a clearance existing between the guide rail and the slider, the sealing device comprising:
• a side seal directly or indirectly fixed to the slider and having a seal lip contacting with the guide rail;
• and
• a lubricant-containing polymer member formed of a synthetic resin containing a lubricant and disposed close to the seal lip.

A liner guide apparatus comprising:

• an axially extending guide rail having a first rolling groove on its outer surface;
• a slider engaged with the guide rail and having a second rolling groove, rolling element return grooves and curved grooves, the second rolling groove confronting the first rolling groove, and the rolling element return grooves being coupled to both end portions of the second rolling groove through the curved grooves, respectively;
• a plurality of rolling elements loaded into the slider to be made circulatable through the second rolling groove, the curved grooves, and the rolling element return grooves;
• and
• a lubricant-containing polymer member formed of a synthetic resin containing a lubricant, and having a contact portion contacting with the guide rail;
• and
• a first plate member fitted to the lubricant-containing polymer member, wherein the lubricant-containing polymer member is interposed between the slider and the first plate member.