KR101600521B1 - Linear Motion Guide - Google Patents

Abstract

The present invention relates to a linear motion guide. The linear motion guide includes: a guide rail; a guide block installed along the guide rail to move; and multiple connectors installed between the guide rail and the guide block. The guide block comprises: a block; a retainer having a third seal unit insertion groove formed to be concave on the surface facing outside, wherein the retainer forms a circulation path of the connector by being installed on both sides in an axial direction of the block; and a seal member. The block is formed in a reverse U shape having a part extended downwards on both sides, and a non-load hole is formed to pass through the part extended downwards in the axial direction. A load groove extended in the axial direction to be concave is formed on the surface facing each other at the part extended downwards. The seal member comprises: a first seal unit and a second seal unit of a bar shape, which are extended in the axial direction and separated from each other; and two third seal units, wherein both ends are connected to the first seal unit and the second seal unit and the third seal units are separated from each other in the axial direction. The third seal unit of the seal member is inserted into a third seal unit insertion hole on both sides in the axial direction, and the first seal unit and the second seal unit are extended in the axial direction. The linear motion guide improves productivity and prevents various kinds of foreign substances from leaking due to heat treatment scale and oil in the non-load hole when the block and the guide rail are rolling. The linear motion guide can prevent the retainer from being transformed and can improve assembly performance. The linear motion guide also prevents separation when assembled with the rail.

Description

A linear motion guide {Linear Motion Guide}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a linear motion guide, and more particularly, to a linear motion guide having a block linearly moving along an axial direction along a guide rail.

Generally, the linear motion guide device 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 are various types of linear guide apparatuses other than the linear guide apparatuses disclosed in Korean Patent Registration No. 10-0713151 (Apr. 24, 2007), and the grooves forming the passage of the balls interposed between the blocks and the rails are arranged in one or two rows And the like. The retainer may be provided on both sides in the axial direction of the block, which is the return portion of the ball. The end seal that performs the sealing function is made of rubber material, and is separately separated into the side seal and the inner seal, and each acts as a hermetic seal.

The conventional linear guide apparatus has some problems.

First, in the case where the retainer is provided on both sides in the axial direction of the block, since the open direction of the retainer is in contact with the open direction of the block, when the ball is filled, it is assembled by being divided into a block and a retainer. There is a possibility that the assemblability is deteriorated.

Secondly, there is a problem that the seal member is separated and is not firmly attached to a block or the like, and is released when assembled with the rail.

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

In order to solve such a conventional problem, in the present invention, a separate injection-molded retainer is provided to prevent the retainer from being deformed in advance, to improve productivity and productivity, and to provide a sealing member with improved sealing performance, And a linear motion guide in which foreign matter is prevented from leaking during rolling motion of the rail.

According to another aspect of the present invention, there is provided an image forming apparatus including a guide rail, a guide block movably provided along the guide rail, and a plurality of rolling elements interposed between the guide rail and the guide block, The guide block includes a block, a retainer provided on both sides in the axial direction of the block and having a circulation passage of the rolling member, the retainer having a third seal portion inserting recess formed on an outwardly facing surface thereof, and a seal member; The block is formed in an " inverted U "shape having downwardly extending portions on both sides, a downwardly extending portion is formed in the downwardly extending portion thereof with a uni-axial right hole penetrating therethrough in the axial direction, A load-receiving groove extending in the direction of the sheet; Wherein the seal member comprises a rod-shaped first seal portion and a second seal portion spaced apart from each other and extending in the axial direction, and two third seal portions spaced from each other in the axial direction and having both ends connected to the first seal portion and the second seal portion And a third seal portion of the seal member is inserted into the third seal shoelike groove on both sides in the axial direction, and the first seal portion and the second seal portion extend in the axial direction.

The retainer is formed of a first U-turn hole and a second U-turn hole which are stacked in the axial direction in the axial direction and which are axially penetrated, and the upper first retainer A first retainer member having a groove and a lower first retainer groove formed thereon and a U-shaped groove formed on the first retainer member to cover the first U-turn hole and the second U-turn hole to form a circulation passage, And a second retainer member having a concave upper second retainer groove and a lower second retainer groove which are spaced apart from each other and extend downward and extend in the axial direction; The first seal portion is inserted into the lower first retainer groove and the lower second retainer groove, and the second seal portion is formed by the upper first retainer groove and the upper seal groove. The third seal portion insertion groove is formed on the outwardly facing surface of the second retainer member. And is inserted into the two retainer grooves.

In the above, the unloading hall holes and the load winding grooves are vertically spaced and provided in plural numbers, respectively; Further comprising: a first ball supporting member and a second ball supporting member both of which are coupled to a retainer provided on both sides of the block in the axial direction; Wherein the first retainer member is formed with a second support member insertion groove and a first support member insertion groove vertically spaced apart from each other in a portion protruding inwardly in a width direction of a surface facing the block; The first ball support member includes a ball support protrusion protruded at both ends in the axial direction and inserted into a first support member insertion groove formed at a lower portion of the ball support member, And a second ball support portion for supporting the first ball support portion; The second ball support member includes a first coupling protrusion protruding from both sides in the axial direction and inserted into a second support member insertion groove formed in the upper portion, And a second ball support portion for preventing the ballast from coming off.

The first ball support member has a seal engagement recess formed in the lower portion thereof extending axially and concavely, and the first seal is inserted into the seal engagement recess between the axially opposite side retainers.

The second ball support portion is spaced apart in the width direction on both sides of the second ball support portion and has a concave seal member insertion groove extending in the axial direction and the second seal portion is inserted into the seal member insertion groove between the axially opposite side retainers .

The third seal portion insertion groove is formed in a bent shape, and the third seal portion inserted in the third seal portion insertion groove is also formed in a bent shape.

Since the linear motion guide according to the present invention is integrally formed with the seal member, it is easy to assemble, the coupling becomes rigid when assembled, and leakage of foreign matter is prevented during rolling motion of the block and the rail, and the injection- The retainer is prevented from being deformed in advance, and the rolling member can be easily prevented from being disengaged when assembling the rolling member, thereby facilitating the assembly.

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 illustrating a linear motion guide according to an embodiment of the present invention,
4 is a bottom perspective view showing a linear motion guide according to an embodiment of the present invention,
5 is a bottom perspective view showing a state in which a cover is separated from a block according to an embodiment of the present invention,
6 is a perspective view showing a state in which a cover is separated from a block according to an embodiment of the present invention,
7 is a perspective view illustrating a state of engagement between a retainer member and a ball supporting member according to an embodiment of the present invention,
FIG. 8 is a perspective view showing a state in which the supporter and the seal member are further joined together in FIG. 7,
9 is a perspective view showing a block and a retainer member on one side according to an embodiment of the present invention,
10 and 11 are perspective views illustrating a cover provided in a linear motion guide according to an embodiment of the present invention,
12 and 13 are perspective views illustrating a cover seal according to an embodiment of the present invention,
14 and 15 are perspective views showing a second retainer member included in the linear motion guide of the present invention,
16 and 17 are perspective views showing a first retainer member provided in the linear motion guide of the present invention,
18 and 19 are perspective views showing support members provided in the linear motion guide of the present invention,
20 and 21 are perspective views showing a second ball supporting member included in the linear motion guide of the present invention,
22 and 23 are perspective views showing a first ball supporting member included in the linear motion guide of the present invention,
24 is a perspective view showing a seal member included in the linear motion guide of the present invention.

Hereinafter, the technical structure of the linear motion guide will be described in detail with reference to the accompanying drawings.

FIG. 3 is a perspective view illustrating a linear motion guide according to an embodiment of the present invention, FIG. 4 is a bottom perspective view illustrating a linear motion guide according to an embodiment of the present invention, FIG. 5 is a cross- FIG. 6 is a perspective view showing a state in which a cover is separated from a block according to an embodiment of the present invention, and FIG. 7 is a perspective view showing a state in which a cover is separated from a block according to an embodiment of the present invention FIG. 8 is a perspective view showing a state in which the supporter and the seal member are further coupled to each other in FIG. 7, and FIG. 9 is a perspective view showing a state FIGS. 10 and 11 are perspective views showing a cover provided in the linear motion guide according to an embodiment of the present invention, and FIGS. 12 and 13 are perspective views showing one side Figs. 14 and 15 are perspective views showing a second retainer member included in the linear motion guide of the present invention, and Figs. 16 and 17 are perspective views showing a cover seal according to an example 18 and 19 are perspective views showing a supporting member provided in the linear motion guide of the present invention. Figs. 20 and 21 are perspective views showing a retainer member, FIGS. 22 and 23 are perspective views illustrating a first ball support member included in the linear motion guide of the present invention, and FIG. 24 is a perspective view illustrating a seal member included in the linear motion guide of the present invention.

In the following description, the direction in which the block 110 moves along the guide rail is referred to as an 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 motion guide according to an embodiment of the present invention includes a guide rail (not shown), a guide block 100 movably provided along a guide rail, And a plurality of balls, which are rolling members (101) interposed between the rail 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, (180), and a second ball supporting member (190).

A retainer 130 and a cover seal 150 are provided on both sides of the block 110 in the axial direction and covers both the retainer 130 and the cover seal 150 on 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. The retainer 130 is provided on both sides in the axial direction of the block 110 and forms the return passage of the rolling member 101. The retainer 130 is provided on both sides of the block 110 in the width direction. That is, a pair of retainers 130 are symmetrically arranged in the width direction on the front side in the axial direction of the block 110, and a pair of the retainers 130 are disposed symmetrically in the width direction on the rear side, . 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 that the retainer 130 slips inward when the retainer 130 is formed. The cover seal 150 is provided on both sides of the block 110 in the axial direction, forming a substantially inverted "U "

An upper and lower unloading holes 131 and 1133 are formed in the lower portion of the block 110 so as to be axially spaced apart from each other in the vertical direction so as to be circulating passages of the rolling members . 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 located below is referred to as a lower load guide slope 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, which will be described later, is provided between the width direction of the upper load winding groove 1151 formed on the inner surface of the block 110 in the width direction, And a first ball support member 170 is provided at the lower end of the lower load groove 1153 formed to be spaced apart in the width direction to support the rolling elements 101. [

The axial ends of the upper and lower unloading central holes 1131 and 1133 are coupled to the axes of the upper and lower unloading central holes 1131 and 1133 so that the coupling protrusions 1314 of the first retainer 131, A portion whose diameter is increased inward from the direction end portion in the axial direction is formed.

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 protruding block inner surface 114 is provided in parallel with the axial direction and inward in the width direction between the upper and lower load grooves 1151 and 1153 and between the lower load groove 1153 and the lower load groove 1153.

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 quadrilateral shape in the form of a plate and extend in four shifting directions inward of the first and second retainer members 131 and 133 The shape of the sides is formed in a shape substantially similar to the cross-section of the inside of the block 110 in the width direction.

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.

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 formed upwardly concave, and the second seal portion 184 of the seal member 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 1319 is concave upwardly and the first seal portion 181 of the seal member 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 member 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 member 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. The second seal portion 183 of the seal member 180, which will be described later, is inserted into the upper second retainer groove 1339. 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.

15, an U-shaped groove 1335 is concavely curved on the inner side surface in the axial direction of the second retainer member 133 toward the first retainer member 131. As shown in Fig. The U-shaped groove 1335 is formed in the protruded portion, and the edge of the U-shaped groove 1335 protrudes.

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 motion guide of the present invention includes the seal member 180 shown in Fig. A rod-shaped first seal portion 181 having a substantially rectangular long rectangular shape and a rod-like second seal portion 183; and a pair of first seal portions 181 and 181, And two third seal portions 185 in the form of rods connected to the second seal portion 183. The first seal portion 181 and the second seal portion 183 extend in the axial direction and the third seal portion 185 extends in the vertical direction. The third seal part 185 has a shape bent at least once.

As shown in FIG. 12, the cover seal 58 is provided in contact with the second retainer member 133. The cover seal 150 is formed in a plate shape with its bottom opened. The cover seal 150 is in the "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 cover seal second groove 159 spaced inwardly in the width direction from the cover seal projecting portion 153 and extending in the up and down direction to be concave. 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.

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 portion 195 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 is provided to extend 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 linear motion guide 100 of 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 member 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 member 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 second seal groove 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 member 180 is integrally formed and inserted into the block 110 and both sides thereof are inserted into the retainer, there is no possibility of disengagement of the ball at the time of assembling and the assemblability can be improved.

 In addition, since the linear motion guide of the present invention is integrally formed with the seal member, it is easy to assemble and the joint is firmly assembled at the time of assembling, so that leakage of foreign matter during rolling motion of the block and the rail is prevented, So that the retainer can be prevented from being deformed and smooth motion of the linear motion guide can be maintained.

Although the linear motion guide according to the present invention has been described with reference to the embodiments shown in the drawings, it is to be understood that various modifications and equivalent embodiments are possible without departing from the scope of the present invention. Accordingly, the scope of the true technical protection should be determined by the technical idea of the appended claims.

100: Linear Motion Guide
110: block 120: cover
131: first retainer member 133: second retainer member
150: cover seal 170: first ball supporting member
180: seal member 190: second ball supporting member

Claims (6)

A plurality of rolling elements 101 interposed between the guide rails and the guide block 100 and a plurality of rolling elements 101 extending in the axial direction from both sides of the retainer And a first ball retaining portion 171 which is coupled to the block 110 and prevents the rolling elements located in the lower load rolling grooves 115 and 1153 from being separated from the block 110. In addition, A first ball supporting member 170 having a seal engaging recess 175 formed therein and an upper load winding groove 115 1151 on both sides in the width direction coupled to the retainer 130 on both sides in the axial direction, And a second ball support member 190 having a second ball support portion 199 for preventing the rolling member located in the second ball support member 199 and having a concave sealing member insertion groove 197 extending downward in the width direction and extending in the axial direction, );
The guide block 100 includes a block 110, a retainer 130 provided on both sides of the block 110 in the axial direction to form a circulation passage of the rolling member, and a seal member 180; The block 110 is formed in a " reverse U "shape having downwardly extending portions on both sides, a downwardly extending portion of the downwardly extending unloading hole 113 is axially penetrated, A load-winding groove 115 which is concave and extends in the axial direction is formed;
The retainer 130 includes a first U-turn hole 1311 and a second U-turn hole 1313 which are stacked on the block 110 in the axial direction and penetrate in the axial direction. The retainer 130 is vertically spaced and downward on the inner side in the width direction A first retainer member 131 having a concave upper first retainer groove 1319 and a lower first retainer groove 1317 formed to extend in the axial direction and a second U retainer member 131 which is laminated on the first retainer member 1311, And a U-shaped groove 1335 which covers the first U-turn hole 1311 and the second U-turn hole 1313 to form a circulation passage. The upper second retainer groove 1339 is vertically spaced downward and extends in the axial direction, And a second retainer member (133) having a lower second retainer groove (1337) formed therein and a third seal portion inserting groove (1332) formed on an outwardly facing surface thereof;
The seal member 180 includes a first seal portion 181 and a second seal portion 183 which are spaced from each other and extend in the axial direction and are spaced from each other in the axial direction and have opposite ends sealed by the first and second seal portions 181, And two third seal parts 185 connected to the second seal part 183;
The third seal portion 185 is inserted into the third seal shank portion 1332 on both sides in the axial direction;
The first seal portion 181 is inserted into the lower first retainer groove 1317 and the lower second retainer groove 1337 and inserted into the seal engaging recess 175 between the axially opposite side retainers 130;
The second seal portion 183 is inserted into the upper first retainer groove 1319 and the upper second retainer groove 1339 and is inserted into the seal member insertion groove 197 between the axially opposite side retainers 130 Linear motion guide. delete delete delete delete 3. The apparatus according to claim 1, wherein the third seal portion insertion groove (1332) is formed in a bent shape, and the third seal portion (185) inserted into the third seal portion insertion groove (132) Linear Motion Guide.

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