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Sealing device for linear guide apparatus

Imported: 24 Feb '17 | Published: 06 Jan '04

Toru Tsukada, Yutaka Igarashi, Soichiro Kato, Toshikazu Yabe, Fumio Ueki

USPTO - Utility Patents

Abstract

In a linear guide apparatus including an axially extending guide rail, a slider engaged with the guide rail, and a plurality of rolling elements loaded into the slider, the linear guide apparatus further includes 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, in which the sealing device includes 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, a connecting portion connecting the wing portions to be C-shaped substantially, and a pair of first recesses formed in the respective wing portions for fixing the lubricant-containing polymer member to the slider; a first plate member fitted to the lubricant-containing polymer member opposed to the slider; and a pair of first cylindrical members inserted to the respective first recesses.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of the linear guide apparatus of a first embodiment of the present invention;

FIG. 2 is a perspective view showing a condition in which each member of a sealing device is attached to the end portion of the linear guide apparatus;

FIGS. 3A and 3B are views showing an arrangement of the lubricant-containing member of the second embodiment;

FIGS. 4A and 4B are views showing an arrangement of the ring-shaped member;

FIGS. 5A and 5B are views showing an arrangement of the ring-shaped member;

FIG. 6 is a side view of the lubricant-containing member in a condition that the ring-shaped member is attached;

FIG. 7 is a front view of the lubricant-containing member which strides a guide rail;

FIGS. 8A and 8B are schematic illustrations showing the mode of operation;

FIG. 9 is a front view showing an arrangement of the lubricant-containing member of a third embodiment of the present invention;

FIG. 10 is a schematic illustration showing the mode of operation of the third embodiment;

FIG. 11 is a perspective view showing an attaching condition of each member of a sealing device of a fourth embodiment;

FIGS. 12A and 12B are views showing an arrangement of the lubricant-containing member of the fourth embodiment;

FIGS. 13A and 13B are views showing an arrangement of the elastic body of the fourth embodiment;

FIG. 14 is a schematic illustration of the mode of operation of the fourth embodiment;

FIG. 15 is a schematic illustration of the mode of operation of the fourth embodiment;

FIG. 16 is a front view of the lubricant-containing member of the fourth embodiment, wherein the view shows a condition in which the member strides the guide rail;

FIG. 17 is a side view of the lubricant-containing member of the fourth embodiment, wherein a ring-shaped member is attached to the member;

FIGS. 18A and 18B are views showing an arrangement of the lubricant-containing member of a fifth embodiment of the present invention;

FIGS. 19A and 19B are views showing an arrangement of the lubricant-containing member of a sixth embodiment of the present invention;

FIG. 20 is a view showing an arrangement of the elastic body of the sixth embodiment;

FIGS. 21A and 21B are schematic illustrations showing an assembling condition of the sixth embodiment;

FIG. 22 is a perspective view of the linear guide apparatus of the sixth embodiment;

FIG. 23 is a front view of the lubricant-containing member of a seventh embodiment of the present invention;

FIG. 24 is a view of the lubricant-containing member of an eighth embodiment of the present invention;

FIGS. 25A and 25B are views showing an arrangement of the elastic body of the eighth embodiment;

FIGS. 26A and 26B are schematic illustrations showing an assembling condition of the eighth embodiment;

FIG. 27 is a front view of the lubricant-containing member of a ninth embodiment of the present invention;

FIGS. 28A and 28B are views showing an arrangement of the elastic body of the ninth embodiment;

FIGS. 29A and 29B are schematic illustrations showing an assembling condition of the ninth embodiment;

FIGS. 30A and 30B are front views showing an arrangement of a tenth embodiment of the present invention;

FIGS. 31A to

31D are perspective views showing an eleventh embodiment of the present invention;

FIGS. 32A to

32C are perspective views showing variations of the eleventh embodiment;

FIG. 33 is a front view showing an arrangement of a twelfth embodiment of the present invention;

FIG. 34 is a perspective view of the lubricant-containing polymer member of the first embodiment of the present invention;

FIG. 35 is a perspective view of the sleeve inserted into the lubricant-containing polymer member;

FIG. 36 is a perspective view showing an attaching condition of each member of a sealing device of the linear guide apparatus end portion;

FIG. 37 is a perspective view of the conventional linear guide apparatus;

FIG. 38 is a perspective view of the lower surface side of the linear guide apparatus shown in FIG. 37;

FIG. 39 is an overall perspective view of the side seal composing a portion of the sealing device according to a thirteenth embodiment of the present invention;

FIG. 40 is an enlarged cross-sectional view of the seal lip of the side seal of the thirteenth embodiment;

FIG. 41 is a perspective view taken from the lower side of the linear guide apparatus of the thirteenth embodiment;

FIG. 42 is an enlarged cross-sectional view of the seal lip of the under seal of the thirteenth embodiment;

FIG. 43 is a schematic cross-sectional view for explaining a variation of the side seal of the thirteenth embodiment;

FIG. 44 is a schematic perspective view for explaining another variation of the side seal;

FIG. 45 is a partially enlarged view of the seal lip of the side seal shown in FIG. 44;

FIG. 46 is a schematic perspective view for explaining another variation of the side seal;

FIG. 47 is a partially enlarged view of the seal lip of the side seal shown in FIG. 46;

FIG. 48 is a schematic perspective view for explaining another variation of the side seal;

FIG. 49 is an enlarged cross-sectional view of the seal lip portion of the side seal shown in FIG. 48;

FIG. 50 is a schematic perspective view for explaining another variation of the side seal;

FIG. 51 is an enlarged cross-sectional view of the seal lip portion of the side seal shown in FIG. 50;

FIG. 52 is an overall perspective view of another conventional side seal; and

FIGS. 53A and 53B are enlarged cross-sectional views of two types of the seal lip portion of the side seal shown in FIG.

52.

Claims

1. A linear guide apparatus comprising:

2. The linear guide apparatus of claim 1, wherein said lubricant-containing member is a lubricant-containing polymer member formed of a synthetic resin containing a lubricant.

3. The linear guide apparatus of claim 1, wherein the first plate member comprises the side seal.

4. The linear guide apparatus of claim 1, wherein said lubricant-containing member is pressed onto said guide rail.

5. The linear guide apparatus of claim 1, wherein said lubricant-containing member is deformable in a direction perpendicular to a longitudinal direction of said guide rail.

6. The linear guide apparatus of claim 1, wherein said first plate member and said lubricant-containing member directly contact each other.

7. The linear guide apparatus of claim 1, wherein the lubricant-containing member is formed of a polymer containing 20 to 80% lubricant by weight.

8. The linear guide apparatus of claim 1, wherein said lubricant-containing member further comprises:

9. The linear guide apparatus according to claim 1, wherein the lubricant-containing member comprises:

10. The linear guide apparatus according to claim 1, wherein the lubricant-containing member seals a clearance existing between the guide rail and the slider.

11. A linear guide apparatus comprising:

12. The linear guide apparatus of claim 11, wherein at least one of the first plate member and the second plate member comprises a side seal.

13. The linear guide apparatus of claim 11, wherein said sealing member comprises a recess or a through hole, and said linear guide apparatus further comprises a cylindrical member inserted into the recess or the through hole.

14. The linear guide apparatus of claim 11, wherein the sealing member comprises a pair of first recesses formed in the wing portions, respectively, and said linear guide apparatus further comprises a pair of first cylindrical members inserted into the first recesses, respectively; and wherein each of the first cylindrical members has an axial length larger than a thickness of the sealing member.

15. The linear guide apparatus of claim 11, wherein the sealing member has an elastic member to press against the guide rail.

16. The linear guide apparatus of claim 15, wherein the elastic member extends along a contact portion, the elastic member being fitted close to the contact portion.

17. The linear guide apparatus of claim 11, wherein said slider further comprises a bolt for supporting said sealing member relative to said slider, and wherein said sealing member has a recess or a through-hole through which said bolt passes.

18. A linear guide apparatus comprising:

19. The linear guide apparatus of claim 18, wherein at least one of the first plate member and the second plate member comprises a side seal.

20. The linear guide apparatus of claim 18, wherein said first and second recesses are through holes.

21. The linear guide apparatus of claim 18, wherein each of the first cylindrical members has an axial length larger than a thickness of the sealing member.

22. The linear guide apparatus of claim 18, wherein the sealing member has an elastic member to press against the guide rail.

23. The linear guide apparatus of claim 18, wherein the elastic member extends along a contact portion, the elastic member being fitted close to the contact portion.

24. The linear guide apparatus of claim 18, wherein said slider further comprises a bolt for supporting said sealing member relative to said slider, and wherein said bolt passes through one of said first and second recesses.

25. The linear guide apparatus of claim 18, wherein the second cylindrical member has an axial length larger than a thickness of the sealing member.

26. The linear guide apparatus of claim 25, wherein at least one of the first plate member and the second plate member comprises a side seal.

27. The linear guide apparatus of claim 25, wherein said first and second recesses are through holes.

28. The linear guide apparatus of claim 25, wherein each of the first cylindrical members has an axial length larger than a thickness of the sealing member.

29. The linear guide apparatus of claim 25, wherein the sealing member has an elastic member to press against the guide rail.

30. The linear guide apparatus of claim 29, wherein the elastic member extends along a contact portion, the elastic member being fitted close to the contact portion.

31. The linear guide apparatus of claim 25, wherein said slider further comprises a bolt for supporting said sealing member relative to said slider, and wherein said bolt passes through one of said first and second recesses.

32. A linear guide apparatus comprising:

33. The linear guide apparatus of claim 32, wherein at least one of the first plate member and the second plate member comprises a side seal.

34. The linear guide apparatus of claim 32, wherein said first recesses are through holes.

35. The linear guide apparatus of claim 32, wherein each of the first cylindrical members has an axial length larger than a thickness of the sealing member.

36. The linear guide apparatus of claim 32, wherein the sealing member has an elastic member to press against the guide rail.

37. The linear guide apparatus of claim 36, wherein the elastic member extends along a contact portion, the elastic member being fitted close to the contact portion.

38. The linear guide apparatus of claim 32, wherein said slider further comprises a bolt for supporting said sealing member relative to said slider, and wherein said bolt passes through said first recesses.

39. A linear guide apparatus comprising:

40. The linear guide apparatus of claim 39, wherein at least one of the first plate member and the second plate member comprises a side seal.

41. The linear guide apparatus of claim 39, wherein said sealing member comprises a recess or a through hole, and said linear guide apparatus further comprises a cylindrical member inserted into the recess or the through hole.

42. The linear guide apparatus of claim 39, wherein said sealing member comprises a pair of first recesses formed in the wing portions, respectively, and said linear guide apparatus further comprises a pair of first cylindrical members inserted into the first recesses, respectively; and wherein each of the first cylindrical members has an axial length larger than a thickness of the sealing member.

43. The linear guide apparatus of claim 39, the sealing member has an elastic member to press against the guide rail.

44. The linear guide apparatus of claim 43, wherein the elastic member extends along a contact portion, the elastic member being fitted close to the contact portion.

45. The linear guide apparatus of claim 39, wherein said slider further comprises a bolt for supporting said sealing member relative to said slider, and wherein said sealing member further comprises both wing portions, and a connecting portion connecting the wing portions that forms a substantially C-shape, and said sealing member having a recess or a through-hole through which said bolt passes.

46. The linear guide apparatus of claim 39, wherein the lubricant-containing member is formed of a synthetic resin containing a lubricant.

47. The linear guide apparatus of claim 46, wherein at least one of the first plate member and the second plate member comprises a side seal.

48. The linear guide apparatus of claim 46, wherein said sealing member comprises a recess or a through hole, and said linear guide apparatus further comprises a cylindrical member inserted into the recess or the through hole.

49. The linear guide apparatus of claim 46, wherein said sealing member comprises a pair of first recesses formed in the wing portions, respectively, and said linear guide apparatus further comprises a pair of first cylindrical members inserted into the first recesses, respectively; and wherein each of the first cylindrical members has an axial length larger than a thickness of the sealing member.

50. The linear guide apparatus of claim 46, wherein the sealing member has an elastic member to press against the guide rail.

51. The linear guide apparatus of claim 50, wherein the elastic member extends along a contact portion, the elastic member being fitted close to the contact portion.

52. The linear guide apparatus of claim 46, wherein said slider further comprises a bolt for supporting said sealing member relative to said slider, and wherein said sealing member further comprises both wing portions, and a connecting portion connecting the wing portions that forms a substantially C-shape, and said sealing member having a recess or a through-hole through which said bolt passes.