KR101790969B1 - A linear guide having closed circuit type seal - Google Patents

A linear guide having closed circuit type seal Download PDF

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Publication number
KR101790969B1
KR101790969B1 KR1020150150552A KR20150150552A KR101790969B1 KR 101790969 B1 KR101790969 B1 KR 101790969B1 KR 1020150150552 A KR1020150150552 A KR 1020150150552A KR 20150150552 A KR20150150552 A KR 20150150552A KR 101790969 B1 KR101790969 B1 KR 101790969B1
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KR
South Korea
Prior art keywords
retainer
seal
axial direction
groove
block
Prior art date
Application number
KR1020150150552A
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Korean (ko)
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KR20170049794A (en
Inventor
권혁도
손기동
남동협
김동운
석동호
Original Assignee
(주)원에스티
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Priority to KR1020150150552A priority Critical patent/KR101790969B1/en
Publication of KR20170049794A publication Critical patent/KR20170049794A/en
Application granted granted Critical
Publication of KR101790969B1 publication Critical patent/KR101790969B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/04—Ball or roller bearings
    • F16C29/06—Ball or roller bearings in which the rolling bodies circulate partly without carrying load
    • F16C29/0602—Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/04—Ball or roller bearings
    • F16C29/06—Ball or roller bearings in which the rolling bodies circulate partly without carrying load
    • F16C29/0602—Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly
    • F16C29/0604—Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly of the load bearing section
    • F16C29/0607—Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly of the load bearing section of parts or members for retaining the rolling elements, i.e. members to prevent the rolling elements from falling out of the bearing body or carriage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/04—Ball or roller bearings
    • F16C29/06—Ball or roller bearings in which the rolling bodies circulate partly without carrying load
    • F16C29/0602—Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly
    • F16C29/0611—Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly of the return passages, i.e. the passages where the rolling elements do not carry load
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bearings For Parts Moving Linearly (AREA)

Abstract

The linear guide provided with the closed-loop type seal of the present invention includes a guide rail, a guide block movably provided along the guide rail, and a closed-loop type seal including a plurality of rolling members interposed between the guide rail and the guide block. In the linear guide provided with:
The guide block includes a block, a retainer provided on both sides in the axial direction of the block, the retainer having a third seal portion insertion groove formed concavely on an outward surface of the retainer and forming a circulation passage of the rolling member, A second ball supporting member having a first ball supporting member and a second ball supporting member, both of which are coupled to the retainer and are spaced apart from each other in the width direction and extending in the axial direction, And a seal provided on both sides of the guide rail, respectively;
The seal includes a first seal portion extending in the axial direction and inserted in the seal member insertion groove, a second seal portion extending in the axial direction and spaced apart from the first seal portion, And a third seal portion spaced apart from each other in the axial direction and having both ends connected to the first seal portion and the second seal portion and inserted into the third seal portion insertion groove. .

Description

Technical Field [0001] The present invention relates to a linear guide having a closed circuit type seal,

The present invention relates to a linear guide provided with a closed-loop type seal, and more particularly, to a linear guide having a closed-type seal having a closed-loop type seal, which is easy to assemble with two closed- Guide.

Generally, the linear guide comprises a guide rail, a slider, and a plurality of balls interposed between the guide rail and the slider. On the left and right side surfaces of the guide rail, rolling grooves for rolling balls are formed. The slider includes a main body having another transmission groove corresponding to the transmission groove, a pair of frames coupled to the main body, an end cap coupled to the front and rear of the frame, and an end seal coupled to the front and rear surfaces of the end cap. do.

Korean Patent Registration No. 10-0713151 (Apr. 24, 2007), which is filed in the prior art, discloses a linear guide device capable of securing the rigidity of a slider and reducing the number of parts. FIG. 1 is a perspective view showing a conventional linear guide device, and FIG. 2 is an exploded perspective view showing a conventional linear guide device.

1 and 2, the linear guide device includes a slider 1100 including a guide rail 1, a block composed of a main body 1200 and a return member 1360 and an end cap 1500, And a plurality of balls (3) interposed between the guide rail (1) and the slider (1100).

On both left and right side surfaces of the guide rail 1, a rolling groove 11 in which the ball 3 rolls is formed. The slider 1100 includes a block composed of a main body 1200 and a return member 1360 and an end cap 1500 disposed on the front and rear sides of the main body 1200 and coupled with the ball inner return groove 360 to form a ball return passage. And an engaging member for engaging the end cap 1500 with the main body 1200. An end seal 700 is coupled to the end cap 500. The main body 1200 includes a pair of legs 220 as a saddle shape and a table 230 connecting upper ends of the legs 220. The load ball transmission grooves 21 corresponding to the transmission grooves 11 are formed along the longitudinal direction of the main body at the right and left inner sides of the leg portions 220. In the leg portion 220, a no-load ball transmission groove 330 spaced apart from the load ball transmission groove 21 is formed to pass through the longitudinal direction of the main body.

The return member 1360 connecting the load ball transmission grooves 21 and the no-load ball transmission grooves 330 and forming the ball inner return grooves 360 is located on the left and right sides of the front and rear sides of the main body 1200, respectively. An edge portion 1362 having an angular shape is formed between the leg portion 220 and the return member 1360 and the edge portion 1362 is fitted in the end cap 1500. Grooves 1364 are formed on the front and rear sides of the leg portions 220 so that the cap protrusions 1524 of the end cap 1500 are fitted. On both side surfaces of the table 230, coupling grooves 1051 for coupling the hooks 1039 are formed. The front and rear surfaces of the table 230 are formed with outer protrusions 232 that fit into the caprises 1560 and inner protrusions 236 are formed inside the outer protrusions 232. A U-shaped oil groove 234 is formed between the outer projecting portion 232 and the inner projecting portion 236.

The end cap 1500 is disposed on the front and rear sides of the main body 1200 and has a ball outer return groove 1520 formed therein. A ball return passage is formed by the ball inner return groove 360 of the return member 1360 and the ball outer return groove 1520 of the end cap 1500. [ A groove 1038 is formed in the hook 1039 of the end cap 1500. A half-circular groove 1522 is formed at the top and bottom of the ball outer return rolling groove 1520 of the end cap 1500. An oil groove 1540 is formed in the capillary 1560 of the end cap 1500. An oil inlet 1542 is formed on the side surface of the end cap 1500 and a recess 59 is formed on the rear surface. The retainer 90 is assembled to the recess 59 of the end cap 1500. On both sides of the end cap 1500, an end seal assembly 1550 for coupling the end seal 700 is formed. The engaging protrusion 750 formed on the end seal 700 is fitted into the end seal assembling portion 1550.

There is a problem that the conventional linear guide is provided with end seals only on both sides in the axial direction of the end cap and is not firmly coupled between the main body and the end seal,

Korean Registered Patent No. 10-0713151 (Apr. 24, 2007)

In order to solve such a conventional problem, in the present invention, the two closed-loop type seals are formed into a polygonal ring shape, which is an elastic body, so that they are easy to assemble and the cover seals are provided in the axial direction of the seals, And a linear guide provided with the improved closed-loop type seal.

The linear guide provided with the closed-loop type seal of the present invention includes a guide rail, a guide block movably provided along the guide rail, and a closed-loop type seal including a plurality of rolling members interposed between the guide rail and the guide block. In the linear guide provided with:

The guide block includes a block, a retainer provided on both sides in the axial direction of the block, the retainer having a third seal portion insertion groove formed concavely on an outward surface of the retainer and forming a circulation passage of the rolling member, A second ball supporting member having a first ball supporting member and a second ball supporting member, both of which are coupled to the retainer and are spaced apart from each other in the width direction and extending in the axial direction, And a seal provided on both sides of the guide rail, respectively;

The seal includes a first seal portion extending in the axial direction and inserted in the seal member insertion groove, a second seal portion extending in the axial direction and spaced apart from the first seal portion, And a third seal portion spaced apart from each other in the axial direction and having both ends connected to the first seal portion and the second seal portion and inserted into the third seal portion insertion groove. to provide.

In the above, the retainer is provided with two second retainer projections which are bent and extend in the vertical direction and protruded axially outwardly;

A cover seal is provided on both sides of the retainer in the axial direction, the cover seal being coupled to the retainer; A cover seal second groove recessed axially outwardly at a position spaced apart in the axial direction of the cover seal and having the second retainer projection;

And the second retainer projection is inserted into the cover seal second groove.

The linear guide provided with the closed-loop type seal according to the present invention has a structure in which the seal is integrally formed and is easy to assemble, and the cover seal surrounds the axial direction of the seal and the axially outer side of the retainer. .

1 is a perspective view showing a conventional linear guide device,
2 is an exploded perspective view showing a conventional linear guide device,
3 is a perspective view showing a linear guide provided with a linear guide seal according to the present invention,
4 is a bottom perspective view showing a linear guide equipped with a linear guide seal of the present invention,
5 is a bottom perspective view showing a state in which the cover is separated from the block in Fig. 4,
Fig. 6 is a perspective view showing a state in which the cover is separated from the block in Fig. 4,
FIG. 7 is a perspective view showing a state in which blocks are separated in FIG. 6,
8 is a perspective view showing a state in which the cover and the support member are separated in Fig. 7,
9 is a perspective view showing a block of a linear guide and a retainer member on one side of the present invention,
10 and 11 are perspective views showing a cover provided in the linear guide,
12 and 13 are perspective views showing a cover seal provided in the linear guide,
14 and 15 are perspective views showing a second retainer member provided in the linear guide,
16 and 17 are perspective views showing a first retainer member provided in the linear guide,
18 and 19 are perspective views showing support members provided in the linear guide,
20 and 21 are perspective views showing a second ball supporting member provided in the linear guide,
22 and 23 are perspective views showing a first ball supporting member provided in the linear guide,
24 is a perspective view showing the seal of the linear guide.

Hereinafter, a linear guide having a closed-loop type seal will be described in detail with reference to the accompanying drawings.

FIG. 3 is a perspective view showing a linear guide provided with a linear guide seal according to the present invention, FIG. 4 is a bottom perspective view showing a linear guide provided with the linear guide seal of the present invention, 6 is a perspective view showing a state in which a cover is separated from a block in FIG. 4, FIG. 7 is a perspective view showing a state in which blocks are separated in FIG. 6, and FIG. 8 is a perspective view 9 is a perspective view showing a block of the linear guide and a retainer member on one side of the linear guide according to the present invention, and FIGS. 10 and 11 are perspective views showing the cover and the support member provided on the linear guide, FIGS. 12 and 13 are perspective views showing a cover seal provided in the linear guide, and FIGS. 14 and 15 are perspective views showing a second retainer member provided in the linear guide. FIG. Figs. 16 and 17 are perspective views showing a first retainer member provided in the linear guide, Figs. 18 and 19 are perspective views showing a support member provided in the linear guide, Figs. 20 and 21 are linear FIGS. 22 and 23 are perspective views showing a first ball supporting member provided in the linear guide, and FIG. 24 is a perspective view showing a seal of the linear guide.

In the following description, the direction in which the block 110 moves along the guide rail is referred to as the axial direction. It is described that the direction from the center of the block 110 toward the both ends in the axial direction is directed to the center of the block at both ends.

3 to 24, the linear guide according to an embodiment of the present invention includes a guide rail (not shown), a guide block 100 provided to be movable along a guide rail, And a rolling member 101 interposed between the guide block 100 and the guide block 100.

The guide block 100 includes a block 110, a cover 120, a retainer 130, a cover seal 150, a support member 160, a first ball support member 170, A seal made of a seal 180, and a second ball supporting member 190.

The block 110 is provided with retainers 130 and cover seals 150 at both sides in the axial direction and covers both the retainer 130 and the cover seal 150 at both sides in the axial direction of the block 110, (Not shown).

The block 110 has a length in the axial direction and has a generally inverted "U " shape extending downward from both sides so that the inner side faces both lateral sides of the guide rail. On both sides of the block 110 in the axial direction, a retainer 130 forming a return passage of the rolling member 101 is provided. The retainer 130 is provided on both sides of the block 110 in the width direction. That is, a pair of retainers 130 are provided symmetrically on both sides of both ends in the axial direction of the block 110 in the width direction so that a total of four retainers 130 are provided. As the retainer 130 is dividedly provided on both sides in the width direction of the block 110, it is possible to prevent the deformation phenomenon of the retainer 130 from slipping inward when the retainer 130 is formed. The cover seals 150 are provided on both sides in the axial direction of the block 110 in a substantially inverted "U " The cover seal 150 is provided on the outer side of the retainer 130 in the axial direction. The cover seal 150 has a substantially inverted " U "shape and is provided in abutment with the axially outer end of the block 110 and the retainer 130.

The upper and lower unloading holes 113 and 1133, which are spaced apart from each other in the downward direction and extend downward from both sides of the block 110, . The block 110 is provided on the guide rail so as to be movable in the axial direction of the guide rail.

Two rows of load-winding grooves 115 are formed on the inner surface of the block 110 opposite to each other in the vertical direction. The load winding groove 115 extends in the axial direction and is concavely curved to abut the ball as the rolling member 101. In the following description, the upper load guide groove 115 is referred to as an upper load guide groove 1151, and the lower load guide groove 115 is referred to as a lower load guide groove 1153. In FIG. 9, reference numeral 111 denotes a fastening groove formed concavely at the upper portion of both ends in the longitudinal direction of the block 110. The coupling grooves 111 may be spaced apart from each other in the width direction and may be formed in plural numbers.

4, a second ball supporting member 190 is provided between the width direction of the upper load winding groove 1151 formed on the inner side surface of the block 110 so as to be spaced apart in the width direction, And a first ball supporting member 170 is installed at a lower end of the lower load winding groove 1153 spaced apart in the width direction to support the rolling member 101. [

The coupling protrusions 1314 of the first retainer 131, which will be described later, are inserted into the axial ends of the upper and lower unloading holes 1131 and 1133. Axial ends of the upper and lower unloading holes 1131 and 1133 are formed axially outward from the end portions in diametrical directions. The jaws of the upper and lower unloading holes 1131 and 1133 are provided in contact with the ends of the coupling protrusions 1314 of the first retainer 131.

The rolling member 101 moving along the upper load winding groove 1151 is guided to the outside and inside in the width direction by the retainer 130 to be described later and moves to the upper unloading hole 1131 to form one circulation passage And the rolling member 101 moving along the lower load winding groove 1153 is guided to the outside in the width direction and inward by the retainer 130 to move to the lower unloading center hole 1133 to form another circulation passage do.

A block inner surface 114 is provided between the upper load groove 1151 and the lower load groove 1153 and below the lower load groove 1153. The block inner surface 114 is parallel to the axial direction and protrudes inward in the width direction.

The block inclined surface 112 is provided at the lower end of the block inner surface 114 provided at the lower end of the lower load groove 1153. [ The block inclined surface 112 is inclined downward toward the outside in the width direction. The block inclined surface 112 extends in the axial direction.

And a block downward surface 119 extending from the lower end of the block inclined surface 112 to the outside in the width direction. The block downward surface 119 extends in the axial direction and is downward.

And a block jaw surface 117 is provided extending downward from the widthwise outer end of the block downward surface 119. The block guide surface 117 extends in the axial direction and is directed in the width direction.

The retainer 130 is composed of a first retainer member 131 and a second retainer member 133 and is stacked on the block 110 in the axial direction. The first retainer member 131 and the second retainer member 133 are formed in a substantially quadrangular shape with a plate shape and the inside of the four sides constituting the first and second retainer members 131, The shape of the side faces facing the inner side of the block 110 is formed to be substantially similar to the inner side face in the width direction of the block 110. [

The first retainer member 131 is laminated on an axial end portion of the block 110, and is provided in a plate-like shape with its widthwise inner side opened.

As shown in FIG. 16, a first U-turn hole 1311 and a second U-turn hole 1313 are formed in the first retainer member 131 in an axial direction. The first U turn holes 1311 are formed in a plurality of spaced apart from each other in the vertical direction. The first U turn hole 1311 located at the upper portion is referred to as an upper first U turn hole 1311-1 and the first U turn hole 1311 located at the lower portion is referred to as a lower first U turn hole 1311-3. The upper first U-turn hole 1311-1 is positioned to communicate with the upper unloading hole 1131 in the axial direction, and the lower first U-turn hole 1311-3 is located in the lower unloading hole 1133 in the axial direction. .

And an upper second U-turn hole 1313-1 is formed through the upper first U-turn hole 1311-1 so as to be spaced inward in the width direction. And a lower second U-turn hole 1313-3 is formed through the lower first U-turn hole 1311-3 and spaced inward in the width direction. And a lower second U-turn hole 1313-3 is formed downward from the upper second U-turn hole 1313-1. The second U-turn holes 1313 are spaced apart from each other in the vertical direction. The upper second U turn hole 1313-1 is positioned to communicate with the upper load groove 1151 in the axial direction and the lower second U turn hole 1313-3 is positioned in the lower load groove 1153 in the axial direction .

The upper second U-turn hole 1313-1 and the upper first U-turn hole 1311-1 are connected to each other by an upper connection groove portion 1316-1. The upper connection groove portion 1316-1 is recessed to be a passage through which the rolling member 101 moves.

The lower second U turn hole 1313-3 and the lower first U turn hole 1311-3 are connected to the lower connection groove 1316-3. The lower connection groove portion 1316-3 is recessed to be a passage through which the rolling member 101 moves.

The inner surfaces 1312a of the upper and lower connection groove portions 1316-1 and 1316-3 are provided with protrusions 1314a protruding and axially outwardly protruding from the upper surfaces of the connection groove portions so as to face each other. The jaw surface 1314a is formed to be convex outward in the axial direction. A protrusion 1336 of the second retainer member 133 is inserted into the upper and lower connection groove portions 1316-1 and 1316-3.

A retainer engagement groove 1315 for insertion of the second retainer 133, which will be described later, is formed concavely on the outer side of the first retainer member 131 in the axial direction. The retainer engagement grooves 1315 may be provided in a plurality of spaced apart from each other.

An upper first retainer groove 1319 is formed to extend in the axial direction on the inner upper side in the opened width direction of the first retainer member 131. The upper first retainer groove 1319 is upwardly concaved and the second seal portion 183 of the seal 180 to be described later is inserted.

A lower first retainer groove 1317 extends axially below the first retainer member 131. The lower first retainer groove 1317 is concave upwardly and the first seal portion 181 of the seal 180 to be described later is inserted.

17, on the inner surface of the first retainer member 131 in the axial direction, the edges of the upper first U-turn hole 1311-1 and the lower first U- And a block engaging projection 1314 is protruded. The block coupling protrusion 1314 is inserted into the axial end of the unloading hole 113 formed in the block 110.

A second ball support member insertion groove 1312 is recessed inwardly in the width direction of the first retainer member 131. A first engaging projection 193 of a second ball supporting member 190, which will be described later, is inserted into the second ball supporting member insertion groove 1312.

A first ball supporting member insertion groove 1318 is recessed in a trapezoidal shape in a lower portion of the first retainer member 131 in the width direction. The first ball support member insertion groove 1318 is inserted with the support protrusion 173 of the first ball support member 170 to be described later.

As shown in Figs. 14 and 15, the second retainer member 133 is formed in a plate-like shape, and the shape of the side inward in the width direction is formed similar to the shape of the inner end face of the block 110. [

A second retainer projection 1331 protrudes outwardly in the axial direction on the axially outer side surface of the second retainer member 133. The second retainer protrusion 133 is inserted into the cover seal second groove 159 of the cover seal 150 to be described later and is engaged. The second retainer protrusions 133 are formed in a bent shape at least once.

The third seal portion insertion groove 1332 is formed in the width direction of the second retainer projection 1331. The third seal portion insertion groove 1332 is formed concavely in the axial direction. The third seal portion 185 of the seal 180 is inserted into the third seal portion insertion groove 1332. [ The third seal portion insertion groove 1332 is formed to extend vertically to an end portion and is provided in communication with an upper second retainer groove 1339 and a lower second retainer groove 1337 to be described later. The third seal portion insertion groove 1332 is bent at least once.

An upper second retainer groove 1339 extends in the axial direction at an inner upper portion of the second retainer member 133 in the width direction. The upper second retainer groove 1339 is formed upwardly concave. The second seal portion 183 of the seal 180, which will be described later, is inserted into the upper second retainer groove 1339. The upper second retainer groove 1339 is provided in communication with the third seal portion insertion groove 1332.

A lower second retainer groove 1337 extends in the axial lower direction of the inner lower portion of the second retainer member 133 in the width direction. The lower second retainer groove 1337 is formed upwardly concave. In the lower second retainer groove 1337, a first seal portion 181 of a seal 180 to be described later is inserted and engaged. The third seal portion insertion groove 1332 is formed to extend in the vertical direction and is provided in communication with the upper second retainer groove 1339 and the lower second retainer groove 1337.

As shown in Fig. 15, a projecting portion 1336 protruding axially inward is formed on the axially inner side surface of the second retainer member 133. As shown in Fig. A U-shaped groove 1335 is formed in the projecting portion 1336 so as to be concave and curved toward the first retainer member 131. The outer surface of the protruding portion 1336 is inserted so as to be in contact with the inner surface 1312a of the first retainer member 131. [ At the upper and lower portions of the ends of the projecting portions 1336, concave portions 1334a recessed axially outward are formed. The end of the recess 1334a is provided in contact with the step 1314a protruding axially outward from the inner surface 1312a of the first retainer member 131. [ End surfaces 1336a which are end portions in the width direction of the projecting portions 1336 are provided in contact with the jaw faces formed axially outwardly of the first and second U-turn holes 1311 and 1313 of the first retainer member 131. [

The U-grooves 1335 are vertically spaced apart from one another. The upper U-shaped groove 1335 is formed as an upper U-shaped groove 1335-1 and the lower U-shaped groove 1335 is referred to as a lower U-shaped groove 1335-3.

The edge protruding portion formed in the upper U-turn groove 1335-1 is inserted into the edge of the upper second U turn hole 1313-1, the upper connecting groove portion 1316-1 and the upper first U-turn hole 1311-1 . The upper U-turn groove 1335-1 covers the upper second U turn hole 1313-1, the upper connecting groove portion 1316-1 and the upper first U-turn hole 1311-1 so that the rolling member 101 A moving passage is formed.

The edge projecting portion formed in the lower U-turn groove 1335-3 is inserted into the edge of the lower second U turn hole 1313-3, the lower connection groove portion 1316-3 and the lower first U-turn hole 1311-3 . Therefore, the lower U-shaped groove 1335-3 covers the lower second U-turn hole 1313-3, the lower connecting groove 1316-3 and the lower first U-hole 1311-3 so that the rolling body 101 A moving passage is formed.

On the other hand, on the inner side surface in the axial direction of the second retainer member 133, a retainer engaging protrusion 1333 is protruded toward the first retainer member 131. The retainer engagement protrusions 1333 may be spaced apart from each other. The retainer engagement protrusion 1333 is inserted into the retainer engagement groove 1315 of the first retainer member 131 so that the second retainer member 133 is engaged with the first retainer member 131. [

18 and 19, the outer shape of the support member 160 is a hexahedron. A first fastening hole 163 is formed in the support member 160 in an axial direction. And a second fastening hole 161 is formed in the axial direction so as to be spaced apart from the first fastening hole 163 in the width direction. The support member 160 is disposed at an upper portion of the retainer 130 and is provided between the cover seal 150 and the block 110 in the axial direction. And may be provided between the cover seal 150 and the support member 160 with an interval in the axial direction. The first and second fastening holes 163 and 161 are screwed together with a cover 120 to be described later so that assembly of the guide block 100 can be completed.

The guide block 100 constituting the linear guide of the present invention includes a seal 180. Two of the seals 180 are spaced apart in the width direction. As shown in Fig. 24, the seal 180 is formed in a substantially rectangular shape with a closed loop. The seal 180 includes a second seal portion 183 extending in the axial direction and inserted into the seal member insertion groove 197, a second seal portion 183 extending in the axial direction, The first seal portion 181 is spaced apart from the first seal portion 181 and is connected to the first seal portion 181 and the second seal portion 183 at both ends of the first seal portion 181, And two third seal portions 185 inserted into the grooves 1332. The third seal part 185 has a shape bent at least once.

As shown in Fig. 12, the cover seal 150 is formed in a plate shape with its bottom opened. The cover seal (150) is provided in contact with the second retainer member (133). The cover seal 150 is coupled to the retainer 130 on both sides. The cover seal 150 has an inverted "U" shape. A cover seal protrusion 153 protruding axially outward is provided at an inner edge of the cover seal 150. The cover seal protrusion 153 protrudes outward in the axial direction along the opened shape of the cover seal 150.

The cover seal 150 is spaced apart in the width direction, and the cover seal protrusion 155 protrudes axially outwardly. And a cover seal jaw portion 157 is provided extending downward from the widthwise inner end of the cover seal projection 155. [ The cover seal jaw portions 157 are spaced apart from each other in the width direction.

As shown in FIG. 13, a cover seal first groove 152 concave at the top is provided on the inner side surface in the axial direction of the cover seal 150 in the width direction. And a second cover seal second groove 159 spaced outwardly in the width direction from the cover seal projection 153 and extending in the vertical direction. The cover seal second groove 159 is formed in a bent shape at least once. The cover seals second grooves 159 are spaced apart in the width direction around the opening. The cover seal second groove 159 is formed at a position where the second retainer projection 1331 is formed. The cover seal second groove 159 is provided with the second retainer protrusion 1331 inserted therein.

20 and 21, the second ball support member 190 is formed in a plate shape. At both axial ends of the second ball support member 190, an extension 191 extends axially outwardly.

A second projection 195 protrudes from the axial end of the extension 191.

The first engaging protrusion 193 is spaced from the extending portion 191 in the width direction. The first coupling protrusions 193 are spaced apart from each other in the width direction about the extended portion 191.

 21, a seal member insertion groove 197 is formed at both ends in the width direction on the lower surface of the second ball support member 190. As shown in Fig. The seal member insertion groove 197 extends in the axial direction.

The second ball supporting portion 199 is spaced outwardly in the width direction from the seal member inserting groove 197. The second ball support portion 199 extends in the axial direction. The cross section of the second ball support 199 is curved and concave.

As shown in Figs. 22 and 23, the first ball support member 170 is formed into a rod shape. A concave sealing engagement concave portion 175 is provided on the lower surface of the first ball support member 170 so as to extend in the axial direction. At both ends of the first ball support member 170 in the axial direction, support protrusions 173 protrude axially.

As shown in Fig. 23, on the inner side surface in the width direction of the first ball support member 170, a protrusion 177 is convexly provided so as to be outward in the width direction. A first ball support portion 171 extends in the axial direction at an upper end of the first ball support portion 170. The end face of the first ball support portion 171 is curved and concave.

As shown in Fig. 11, the cover 120 is formed in a box shape with its bottom opened. A cover first fastening hole 122 is formed in an upper portion of the cover 120 in an axial direction. The cover second fastening hole 125 is axially formed to be spaced apart from the first fastening hole 122 in the width direction.

And a cover first groove 126 spaced outward in the width direction from the second fastening hole 125 is provided.

The cover axial surface portion 121 formed along the opening of the cover 120 protects the retainer 130 and the cover seal 150 in a plate-like shape.

A cover second groove portion 124 is formed through the cover shaft portion 121 so as to be spaced apart in the width direction.

The cover protrusion 127 is protruded upward from the axially inner end of the cover support extension portion 123 extending axially inward from the cover axial surface portion 121.

A cover slit 129, which is a portion cut out in the width direction outward from the cover projection 127, is formed.

The assembling process of the guide block 100 of the linear guide according to the present invention by assembling the above-described components will be described. The second ball supporting member 190 is positioned on the inner side in the width direction of the block 110. The first ball support member 170 is engaged with the lower surface of the block 110 in the next step. A protrusion 177 provided on the first ball support member 170 is inserted and engaged with a groove (not shown) formed in the block 110.

The retainer 130 is assembled to fix the first ball support member 170 and the second ball support member 190 to each other.

The first retainer 131 is engaged with the axial end of the block 110. [ At this time, the block engaging protrusion 1314 of the first retainer 131 is inserted into the unloading thread hole 113 and engaged. The second retainer 133 is stacked and coupled to the outside of the first retainer 131 coupled to the block 110 in the axial direction. After the first retainer 131 is engaged, the second retainer 133 on one side in the axial direction is laminated, and the second retainer 133 on the other side is laminated and engaged after the ball as the electric motor is inserted.

The first engaging protrusion 193 of the second ball supporting member 190 is engaged with the second supporting member inserting portion 1312 of the first retainer 131 and is fixed. The first support member 170 is fixed by inserting the support protrusion 173 of the first ball support member 131 into the first support member insertion groove 1318 of the first retainer 131. [

Next, the seal 180 is engaged with the first ball support member 170 and the second retainer 133. At this time, the first seal portion 181 is inserted into the seal member insertion groove 197 of the second ball support member 190. The second seal portion 183 is inserted into the seal engagement concave portion 175 of the first ball support member 170.

The assembly of the seal 180 is completed by inserting the third seal portion 185 into the third seal portion insertion groove 1332 of the second retainer member 133 in the next step.

The support member 160 assembled to the block 110 is placed on the upper portion of the retainer 130. Then, Engage the cover seal (150).

The first retainer protrusion 1331 of the second retainer 133 is inserted and engaged with the cover seal second groove 159 of the cover seal 150. The second ball supporting member 190 is fixed to the cover seal first groove 152 of the cover seal 150 by inserting the second engaging projection 195 of the second ball supporting member 190. Finally, when the cover 120 is covered and the first and second fastening holes 122 and 125 are fastened with screws, the assembling of the guide block 110 is completed.

Since the seal 180 is formed in a closed circuit shape and inserted into the block 110 and both sides thereof are inserted into the retainer 130, there is no possibility of disengagement of the ball at the time of assembling and the assembling property is improved. In addition, since the cover seal 150 is provided on both sides of the seal 180 in the axial direction, separation of the retainer 130 from the block 110 is prevented.

Although the linear guide with the closed-loop type seal according to the present invention has been described with reference to the embodiments shown in the drawings, it is merely an example, and various modifications and equivalent other embodiments can be made by those skilled in the art . Accordingly, the scope of the true technical protection should be determined by the technical idea of the appended claims.

100: guide block
110: block 120: cover
131: first retainer member 133: second retainer member
150: cover seal 170: first ball supporting member
180: seal 190: second ball support member

Claims (2)

A guide rail, a guide block 100 movably provided along the guide rail, and a closed-loop type seal including a plurality of rolling elements 101 interposed between the guide rail and the guide block 100 In the linear guide,
The guide block 100 includes a block 110; A retainer (first retainer member 131) and a second retainer member 133 which are provided on both sides in the axial direction and the width direction of the block 110 and which are stacked in the axial direction and form a circulation passage of the rolling member 101 130); A first ball supporting member 170 which is spaced apart in the width direction and which is coupled to the retainer 130 on both sides and which is located between the retainers 130 in the axial direction and has a concave sealing engagement recess 175 extending axially in the lower portion, Wow; A second ball support member 190 (hereinafter, referred to as " first ball support member 190 ") having both sides thereof inserted into the retainer 130 and positioned between the retainers 130 in the axial direction, )Wow; And a seal 180 provided on both sides in the width direction of the guide rail, respectively;
The first retainer member 131 is laminated on the axial end portion of the block 110 as a plate-like opening with its widthwise inner side opened, and the first U turn hole 1311 and the second U turn hole 1313 are axially penetrated An upper first retainer groove 1319 is formed to extend in the axial direction and a lower first retainer groove 1317 is formed in the lower portion to extend in the axial direction;
The second retainer member 133 has a plate-like second retainer projection 1331 which is bent at least one time on the axially outer side surface and protrudes outward in the axial direction. The second retainer member 133 is provided on the inner side in the width direction of the second retainer projection 1331 A third seal portion insertion groove 1332 concaved in the axial direction and bent at least once is formed, and an upper second retainer groove 1339 having an upward concave upward is formed in the inner upper portion in the width direction, The upper and lower second retainer grooves 1337 and 1337 extend in the axial direction and the upper and lower second retainer grooves 1339 and 1337 extend in the vertical direction, Communicating;
The seal 180 has a rod-like shape extending in the axial direction and includes a first seal portion 181 inserted into the seal engagement concave portion 175, the lower first retainer groove 1317 and the lower second retainer groove 1337,
The seal member insertion groove 197, the upper first retainer groove 1319, and the second seal member 1339 inserted in the upper second retainer groove 1339 are spaced apart from the first seal portion 181 and extend in the axial direction. 183,
Two third seal portions 185 that are spaced apart from each other in the axial direction and connected at both ends to the first and second seal portions 181 and 183 and bent at least once to be inserted into the third seal portion insertion groove 1332, And a linear guide having a closed-type seal. The connector according to claim 1, wherein the second retainer member (133) is provided with two second retainer protrusions (1331) which are bent and extend in the vertical direction and protruded axially outwardly;
A cover seal 150 is provided on the outer side of the second retainer member 133 in the axial direction, the cover seal 150 being coupled to the retainer 130 on both sides; A cover seal second groove 159 is formed axially outwardly in the axial direction of the cover seal 150 at a position spaced apart in the axial direction and provided with the second retainer protrusion 1331;
And the second retainer protrusion (1331) is inserted into the cover seal second groove (159).
KR1020150150552A 2015-10-28 2015-10-28 A linear guide having closed circuit type seal KR101790969B1 (en)

Priority Applications (1)

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KR1020150150552A KR101790969B1 (en) 2015-10-28 2015-10-28 A linear guide having closed circuit type seal

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KR1020150150552A KR101790969B1 (en) 2015-10-28 2015-10-28 A linear guide having closed circuit type seal

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KR101790969B1 true KR101790969B1 (en) 2017-10-31

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100713041B1 (en) * 2000-05-29 2007-05-02 티에치케이 가부시끼가이샤 Linear m0ti0n guide device
JP2007309364A (en) * 2006-05-16 2007-11-29 Nsk Ltd Linear guide device seal and linear guide device
JP2010107043A (en) * 2008-10-30 2010-05-13 Schaeffler Kg Linear motion rolling bearing

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100713041B1 (en) * 2000-05-29 2007-05-02 티에치케이 가부시끼가이샤 Linear m0ti0n guide device
JP2007309364A (en) * 2006-05-16 2007-11-29 Nsk Ltd Linear guide device seal and linear guide device
JP2010107043A (en) * 2008-10-30 2010-05-13 Schaeffler Kg Linear motion rolling bearing

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