TWI431205B - Dust-proof device for a linear guideway - Google Patents

Description

Dustproof device for linear slide

The present invention relates to a dustproof device, and more particularly to a dustproof device for a linear slide.

At present, the linear slide rail is used to prevent dust or oil from entering the rolling element between the rail and the inside of the slider. Generally, a dustproof device is installed on the slider of the linear slide rail, and the dustproof device of the general linear slide rail can be conventionally used. The following methods are summarized:

First, referring to Fig. 1, a dustproof device for a linear slide is disclosed in U.S. Patent No. 6,250,805, which is mainly provided with a recess 121 for the end cover 12 at both ends of the slider 11 of the linear slide rail, and two of the dustproof unit 13 The fastening portion 131 is vertically disposed at the end, and the two fastening portions 131 are correspondingly engaged with the recesses 121 of the two end covers 12, thereby achieving the purpose of dust prevention. However, the prior art mainly has the following drawbacks: The process of manufacturing the dustproof unit 13 is complicated, and the manufacturing cost of the dustproof unit 13 is increased. 2. The joint between the fastening portion 131 and the two ends of the dustproof unit 13 is easily broken due to repeated bending, and the dustproof unit is lowered. 13 lifetime.

The second embodiment of the dustproof unit 15 is provided with a pair of claw fasteners 151 at the two ends of the dustproof unit 15, and is fastened to the claws 151 by the claws 151. The inside of the slot 161 of the end cover 16 is used for dust prevention. In addition, a through hole 162 is defined in the side of the end cover 16 for the tool to be inserted as the dust removing unit 16. However, the prior art mainly has the following description. Defects: 1. Since the dustproof unit 15 must be dismantled through the tool, thereby causing the inconvenience of the dustproof device to be disassembled; 2. Due to the claw 151 provided on the dustproof unit 15 with a complicated structure, The manufacturing process of the dustproof unit 15 is increased, and the manufacturing cost of the dustproof unit 15 is increased.

Third, referring to FIG. 3, a dustproof device for a linear slide is disclosed in US Pat. No. 7,576,819. The dustproof unit 20 is composed of a hard core shaft 21 and a soft rubber 22, which is abutted against the slippery shaft. The bottom portion of the block 23 is flat, and the soft rubber portion 22 is axially extended along the slider 23 to form two elastic lips 221, and the elastic lip portion 221 has an interference amount with the slider 23, and the dustproof unit is utilized by the interference amount. 20 is combined with the linear slide rail to achieve the purpose of dust prevention. However, this prior art mainly has the drawbacks described later: since the two grooves 231 must be provided in the slider 23, the soft rubber 22 of the dustproof unit 20 can be The slider 23 is firmly engaged, and the elastic lip 221 of the soft rubber 22 must be larger than the size of the groove 231 to generate an interference amount, thereby causing an increase in the processing cost of the slider 23, and only by the soft rubber 22 and The clickability between the sliders 23 is engaged, and the engagement effect is not good.

Fourth, referring to FIG. 4, a dustproof device is disclosed in US Pat. No. 6,030,124. The dustproof unit 25 is mainly provided with a dust-proof lip portion 251 and a reinforcing metal member 252. The reinforcing metal member 252 is disposed along the long direction of the dustproof unit 25. A part of the reinforcing metal member 252 is exposed, and a hook 261 is disposed on the disk portion 26, and the bare reinforcing metal member 252 is engaged by the hook 261 to achieve the purpose of dust prevention. The known technology mainly has the following drawbacks: 1. The process of manufacturing the dustproof unit 25 is complicated, and the manufacturing cost of the dustproof unit 25 is increased. 2. In order to achieve the manner in which the hook 261 and the reinforcing metal member 252 are engaged, the space required is large. Therefore, the thickness of the dustproof unit 25 needs to be increased, resulting in an increase in the manufacturing cost of the dustproof unit 25.

It is an object of the present invention to provide a dustproof device for a linear slide which mainly reduces the manufacturing cost of the dustproof device.

Another object of the present invention is to provide a dustproof device for a linear slide rail, which mainly improves the service life of the dustproof device.

Another object of the present invention is to provide a dustproof device for a linear slide rail, which mainly increases the convenience of disassembly of the dustproof device.

Still another object of the present invention is to provide a dustproof device for a linear slide which mainly increases the engagement effect of the dustproof device.

In order to achieve the foregoing object, in accordance with the present invention, a linear slide rail dustproof device includes a rail for linear sliding of a slider, and the dustproof device includes: a two-end cover, which are respectively provided Each of the end caps has a first recess and a second recess corresponding to each other and facing the side of the rail, and a slot wall of each of the first recesses has a first protrusion a slot portion of each of the second recesses has a second protrusion; a first dustproof unit having a first dust lip and a first end and a second end disposed in opposite directions The first end portion has a first card slot, and the second end portion has a second card slot. The first and second end portions are respectively disposed in the first recess of the two end cover, the first card slot Engaging with the first convex portion of the one end cover, the second convex portion and the first convex portion of the other end cover are mutually engaged, and the first dust-proof lip is in contact with the side of the rail; a second dustproof unit , having a second dust-proof lip portion and a third end portion and a fourth end portion disposed in opposite directions, the third end portion having a third card slot, the fourth end portion has a fourth card slot, and the third and fourth end portions are respectively disposed in the second recess of the two end cover, the third card slot and the second protrusion of the one end cover The portions are mutually engaged, the fourth card slot and the second protrusion of the other end cover are mutually engaged, and the second dust lip is in contact with the side of the rail.

In addition, in order to achieve the foregoing object, in accordance with the present invention, a linear slide rail dustproof device includes a rail for linear sliding of a slider, and the dustproof device includes: two end caps respectively disposed on Each of the two ends of the slider has a first recess and a second recess corresponding to each other and facing the side of the rail, and a slot wall of each of the first recess has a first recess. a slot of each of the second recesses has a second recess; a first dustproof unit having a first dust lip and a first end and a second end disposed in opposite directions, the first end The first end portion has a first card protrusion, and the second end portion has a second card protrusion. The first and second end portions are respectively disposed on the first groove of the two end cover, and the first card protrusion and one end thereof are respectively The first recesses of the cover are mutually engaged, the second recesses and the first recesses of the other end cover are mutually engaged, and the first dust lip is in contact with the side of the rail; a second dustproof unit having a first a dust-proof lip portion and a third end portion and a fourth end portion disposed in opposite directions, the third end portion having a third card protrusion, the fourth end portion has a fourth card protrusion, and the third and fourth end portions are respectively disposed on the second groove of the two end cover, the third card protrusion and the second concave portion of the one end cover The second card protrusion and the second recess of the other end cover are mutually engaged, and the second dust lip is in contact with the side of the rail.

The present invention has been described with reference to the preferred embodiments of the present invention in accordance with the accompanying drawings.

Referring to Figures 5 to 10, a dustproof device for a linear slide rail according to a first embodiment of the present invention includes a rail 32 for linearly sliding the slider 31, and the dustproof device is mainly composed of a two-end cover. 40, 50, a first dustproof member 60 and a second dustproof member 70, wherein the two end covers 40, 50 are respectively disposed at two ends of the slider 31, and each of the end covers 40, 50 has a first groove 41, 51 and a second groove 42, 52 corresponding to the side surface 321 of the rail 32, and a groove wall of each of the first grooves 41, 51 has a first protrusion 411 511, a groove wall of each of the second grooves 42, 52 has a second convex portion 421, 521.

The first dustproof unit 60 is an elongated member, and is composed of a first rubber member 61 and a first reinforcing member 62. The side of the first rubber member 61 has a length along its length. a first lip portion 612 and a second end portion 613 are disposed at opposite ends of the first rubber member 61. The first end portion 612 has a first card. a slot 614, and a first limiting portion 615 is defined between the two slot walls of the first slot 614. The second end portion 613 has a second slot 616, and the two slots of the second slot 616 There is a second limiting portion 617 between the two end covers 40, 50, and the first and second end portions 612, 613 are respectively disposed on the two end covers 40, The first recesses 411 of the first recesses 411 and the first recesses 411 of the one end cover 40 are engaged with each other, and the first limiting portion 615 is abutted against the first convex portion 411. The second locking portion 616 is engaged with the first convex portion 511 of the other end cover 50, and the second limiting portion 617 is abutted against the first convex portion of the second locking groove 616. The side of the 511, in addition, the first dust lip The portion 611 is in contact with the side surface 321 of the rail 32.

The second dustproof unit 70 is an elongated member, and is composed of a second rubber member 71 and a second reinforcing member 72. The side of the second rubber member 71 has a length along its length. The second rubber member 71 has a third end portion 712 and a fourth end portion 713 which are oppositely disposed at opposite ends of the second rubber member 71. The third end portion 712 has a third card. a slot 714, and a third limiting portion 715 is defined between the two slot walls of the third slot 714. The fourth end portion 713 has a fourth slot 716, and the two slots of the fourth slot 716 There is a fourth limiting portion 717, the second dustproof unit 70 is disposed between the two end covers 40, 50, and the third and fourth end portions 712, 713 are respectively disposed on the two end covers 40, The second recesses 42 and 52 of the 50 are engaged with the second protrusions 421 of the one end cover 40 , and the third limiting portion 715 is abutted against the second protrusions 421 . The fourth slot 716 is engaged with the second protrusion 521 of the other end cover 50, and the fourth limiting portion 717 is abutted against the second protrusion of the fourth slot 716. The side of the 521, in addition, the second dust lip The portion 711 is in contact with the side surface 321 of the rail 32.

The above is the structure and configuration description of each main component of the first embodiment of the present invention.

Accordingly, the first embodiment of the present invention achieves at least the following effects.

First, since the dustproof device of the present invention can be assembled only by the cooperation of the concave-convex structure, and has no complicated hook structure design, the manufacturing process of the dustproof unit can be avoided, and the present invention can be reduced. The dustproof device is manufactured for the purpose of cost.

Secondly, since the dustproof device of the present invention can be assembled only by the cooperation of the concave-convex structure, and has no excessively complicated structural design, the present invention can indeed achieve the purpose of improving the service life of the dustproof device.

Thirdly, when the dustproof device of the present invention is assembled by the cooperation of the concave-convex structure, the dustproof unit can be removed without passing through the tool, and the structure of the dustproof unit is not damaged. Therefore, the present invention can achieve the increase of the dustproof The purpose of the device is easy to disassemble.

Fourth, since the dustproof device of the present invention prevents the first and second dustproof units 60, 70 from moving laterally by the cooperation of the concave-convex structure, thereby increasing the engagement effect of the dustproof device, the first The first and second limiting portions 615 and 617 of the dustproof unit 60 respectively abut the side edges of the first convex portions 411 and 511 of the two end covers 40 and 50 and the third and fourth portions of the second dustproof unit 70 The limiting portions 715 and 716 respectively abut the side edges of the second convex portions 421 and 521 of the two end covers 40 and 50 to prevent the first and second dustproof members 60 and 70 from axially disengaging from the two end covers 40, 50. Therefore, the present invention has indeed achieved the object of increasing the engagement effect of the dustproof device.

Referring to FIG. 11 , in the state of the first embodiment of the present invention, a first carding portion 618 is further disposed between the first and second end portions 612 and 613 of the first dustproof unit 60. The portion 618 is fastened between the first recesses 41 and 51 of the two end covers 40 and 50. The third and fourth end portions 712 and 714 of the second dustproof unit 70 have a second locking portion. 718, the second clamping portion 718 is fastened between the second recesses 42 and 52 of the two end covers 40 and 50, thereby adding the first and second dustproof units 60 and 70 to the two end covers 40. The axial bond strength at 50.

Referring to Figures 12 to 14, a dustproof device for a linear slide according to a second embodiment of the present invention, the linear slide also includes a rail 32 for linear sliding of the slider 31, the dustproof device also being provided by the two ends The cover 40, 50, a first dustproof member 80, and a second dustproof member 90 are the same as the first embodiment, and therefore will not be described again. The second embodiment is different in that: End caps 40, 50 are respectively disposed at two ends of the slider 31, and each of the end caps 40, 50 has a first recess 41, 51 and a second recess corresponding to each other and facing the side surface 321 of the rail 32. The slots 42 and 52, and a slot wall of each of the first recesses 41, 51 have two first recesses 412, 512, and one slot wall of each of the second recesses 42, 52 has two second recesses 422, 522.

The first dustproof unit 80 is an elongated member, and is composed of a first rubber member 81 and a first reinforcing member 82. The side of the first rubber member 81 has a length along its length. a first lip portion 812 and a second end portion 813 which are oppositely disposed at opposite ends of the first rubber member 81, and the first and second end portions 812 and 813 There is a first clamping portion 814, wherein the first end portion 812 has two first card protrusions 815, and the second end portion 813 has two second card protrusions 816. The first dustproof unit 80 is disposed on the first card portion 814. Between the two end caps 40, 50, the first locking portion 814 is fastened between the first recesses 41, 51 of the two end caps 40, 50, and the first and second end portions 812, 813 respectively The first recesses 415 of the two end caps 40 and 50 are respectively engaged with the first recesses 412 of the one end cover 40. The second latches 816 and the other end caps 50 are engaged with each other. The first recessed portions 512 are mutually engaged, and the first dust-proof lip portion 811 is in contact with the side surface 321 of the rail 32.

The second dustproof unit 90 is an elongated member, and is composed of a second rubber member 91 and a second reinforcing member 92. The side of the second rubber member 91 has a length along its length. The second rubber member 91 has a third end portion 912 and a fourth end portion 913 which are oppositely disposed at opposite ends of the second rubber member 91, and the third and fourth end portions 912 and 913 are disposed. There is a second clamping portion 914. The third end portion 912 has two third locking portions 915. The fourth end portion 913 has two fourth locking portions 916. The second dustproof unit 90 is disposed on the second clamping portion 915. Between the two end covers 40, 50, the second locking portion 914 is fastened between the second recesses 42, 52 of the two end covers 40, 50, and the third and fourth end portions 912, 913 respectively The second recesses 42 and 52 of the two end caps 40 and 50 are engaged with the second recesses 422 of the one end cover 40. The fourth latches 916 and the other end caps 50 are engaged with each other. The second recesses 522 are mutually engaged, and the second dust lip 911 is in contact with the side surface 321 of the rail 32.

The above is the structure of each main component of the second embodiment of the present invention and its configuration description, thereby achieving another implementable state of the present invention.

In conclusion, the two embodiments and the drawings are only the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, that is, the equal changes and modifications made by the patent application scope of the present invention are It should be within the scope of the patent of the present invention.

"Knowledge"

11. . . Slider

12. . . End cap

121. . . Insert slot

13. . . Dustproof unit

131. . . Buckle

15. . . Dustproof unit

151. . . Claw buckle

16. . . End cap

161. . . Card slot

162. . . Through hole

20. . . Dustproof unit

twenty one. . . Hard core shaft

twenty two. . . Soft rubber

221. . . Elastic lip

twenty three. . . Slider

231. . . Trench

25. . . Dustproof unit

251. . . Dust lip

252. . . Reinforced metal parts

26. . . Disk type

261. . . Hook

"this invention"

31. . . Slider

32. . . Rail

321. . . side

40. . . End cap

41. . . First groove

411. . . First convex

412. . . First recess

42. . . Second groove

421. . . Second convex

422. . . Second recess

50. . . End cap

51. . . First groove

511. . . First convex

512. . . First recess

52. . . Second groove

521. . . Second convex

522. . . Second recess

60. . . First dustproof unit

61. . . First rubber piece

611. . . First dust lip

612. . . First end

613. . . Second end

614. . . First card slot

615. . . First limit

616. . . Second card slot

617. . . Second limit

618. . . First card department

62. . . First reinforcement

70. . . Second dustproof unit

71. . . Second rubber piece

711. . . Second dust lip

712. . . Third end

713. . . Fourth end

714. . . Third card slot

715. . . Third limit

716. . . Fourth card slot

717. . . Fourth limit

718. . . Second card department

72. . . Second reinforcement

80. . . First dustproof unit

81. . . First rubber piece

811. . . First dust lip

812. . . First end

813. . . Second end

814. . . First card department

815. . . First card convex

816. . . Second card convex

82. . . First reinforcement

90. . . Second dustproof unit

91. . . Second rubber piece

911. . . Second dust lip

912. . . Third end

913. . . Fourth end

914. . . Second card department

915. . . Third card convex

916. . . Fourth card convex

92. . . Second reinforcement

Figure 1 is a diagram of an embodiment of U.S. Patent No. 6,250,805.

Figure 2 is a diagram of an embodiment of U.S. Patent No. US5087130.

Figure 3 is a diagram of an embodiment of U.S. Patent No. 7,579,819.

Figure 4 is a diagram of an embodiment of U.S. Patent No. US6030124.

Fig. 5 is an exploded perspective view showing the slider of the first embodiment of the present invention and the linear slide.

Figure 6 is a side view showing the combination of the first embodiment of the present invention and the linear slide.

Figure 7 is a side elevational view of the end cap of the first embodiment of the present invention.

Fig. 8 is a front elevational view showing the first dustproof unit of the first embodiment of the present invention.

Figure 9 is a cross-sectional view of line 8-9 of Figure 8.

Fig. 10 is an enlarged cross-sectional view showing the combined portion of the first embodiment of the present invention, showing a state in which the second dustproof unit is coupled to the two end caps.

Fig. 11 is an exploded perspective view showing the first embodiment of the present invention and a linear slide rail, showing a state in which a locking portion is provided between the two end portions of the dustproof unit.

Figure 12 is an exploded perspective view of a slider of a second embodiment of the present invention and a linear slide.

Figure 13 is a side view showing the combination of the second embodiment of the present invention and the linear slide.

Figure 14 is an enlarged cross-sectional view showing a combined portion of a second embodiment of the present invention, showing a state in which the second dustproof unit is coupled to the two end caps.

31‧‧‧ Slider

40‧‧‧End cover

42‧‧‧second groove

50‧‧‧End cover

51‧‧‧First groove

52‧‧‧second groove

60‧‧‧First dustproof unit

611‧‧‧First dust lip

612‧‧‧ first end

613‧‧‧ second end

614‧‧‧ first card slot

615‧‧‧First Limitation Department

616‧‧‧Second card slot

617‧‧‧Second Limitation

70‧‧‧Second dustproof unit

711‧‧‧Second dust lip

712‧‧‧ third end

713‧‧‧fourth end

714‧‧‧ third card slot

715‧‧‧ Third Limit Department

716‧‧‧fourth card slot

717‧‧‧4th Limitation Department

Claims (8)

A dustproof device for a linear slide rail, the linear slide rail comprising a rail for linear sliding of the slider, the dustproof device comprising: two end caps respectively disposed at two ends of the slider, each end cap having a mutual a first groove and a second groove corresponding to the side of the rail, and a groove wall of each of the first grooves has a first protrusion, and a groove wall of each of the second grooves has a groove a first dust-proof unit having a first dust-proof lip portion and a first end portion and a second end portion disposed in opposite directions, the first end portion having a first card slot, The second end portion has a second card slot, and the first and second end portions are respectively disposed on the first recesses of the two end covers, and the first card slot and the first convex portion of the one end cover are mutually engaged with each other. The second card slot and the first protrusion of the other end cover are mutually engaged, and the first dust lip is in contact with the side of the rail; a second dustproof unit having a second dust lip and a reverse setting a third end portion and a fourth end portion, the third end portion has a third card slot, and the fourth end portion has a fourth card slot, the first The four end portions are respectively disposed in the second recesses of the two end covers, and the third card slots are mutually engaged with the second convex portions of the one end cover, and the fourth card slots and the second convex portions of the other end cover are mutually The card is formed and the second dust lip is in contact with the side of the rail. The dust-proof device for a linear slide according to the first aspect of the invention, wherein the first and second slots of the first dustproof unit respectively have a first and second limiting portions, wherein the first limiting portion is offset The second limiting portion is disposed on a side of the first convex portion of the first card slot. The second limiting portion abuts against a side of the first convex portion of the second card slot. The dustproof device for a linear slide according to the first aspect of the invention, wherein the third and fourth slots of the second dustproof unit respectively have a third and fourth limiting portions, wherein the third limiting portion is offset The fourth limiting portion abuts against a side of the second convex portion of the fourth card slot. The dustproof device for a linear slide according to claim 1, wherein the first dustproof unit is composed of a first rubber member and a first reinforcing member, and the second dustproof unit is a second member. The rubber member is composed of a second reinforcing member. A dustproof device for a linear slide according to claim 1, wherein the first dustproof unit has a first locking portion between the first end and the second end portion, and the first locking portion is fastened to the card. Between the first recesses of the two end caps, a second latching portion is formed between the third and fourth end portions of the second dustproof unit, and the second latching portion is fastened to the second end cap. Between the two grooves. A dustproof device for a linear slide rail, the linear slide rail comprising a rail for linear sliding of the slider, the dustproof device comprising: two end caps respectively disposed at two ends of the slider, each end cap having a mutual a first recess and a second recess corresponding to the side of the rail, and a slot wall of each of the first recess has a first recess, and a slot wall of each of the second recess has a first slot a first recessed portion having a first dust-proof lip portion and a first end portion and a second end portion disposed in a reverse direction, the first end portion having a first card protrusion, the second portion The end portion has a second card protrusion, and the first and second end portions are respectively disposed on the first groove of the two end cover, and the first card protrusion and the first concave portion of the one end cover are mutually engaged, the second card The first recessed portion of the convex and the other end cover is mutually engaged, and the first dust-proof lip is in contact with the side of the rail; a second dustproof unit having a second dust-proof lip and a third disposed in a reverse direction An end portion and a fourth end portion, the third end portion has a third card protrusion, and the fourth end portion has a fourth card protrusion, the The four end portions are respectively disposed on the second recesses of the two end covers, the third card protrusions and the second recesses of the one end cover are mutually engaged, and the fourth card protrusions and the second recesses of the other end cover are mutually engaged And the second dust lip is in contact with the side of the rail. The dustproof device for a linear slide according to claim 6, wherein the first dustproof unit is composed of a first rubber member and a first reinforcing member, and the second dustproof unit is a second member. The rubber member is composed of a second reinforcing member. A dustproof device for a linear slide according to claim 6, wherein the first dustproof unit has a first locking portion between the first end and the second end portion, and the first locking portion is fastened to the card. Between the first recesses of the two end caps, a second latching portion is formed between the third and fourth end portions of the second dustproof unit, and the second latching portion is fastened to the second end cap. Between the two grooves.