KR101790971B1 - Noise Reduced Linear Guide - Google Patents

Noise Reduced Linear Guide Download PDF

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Publication number
KR101790971B1
KR101790971B1 KR1020150150553A KR20150150553A KR101790971B1 KR 101790971 B1 KR101790971 B1 KR 101790971B1 KR 1020150150553 A KR1020150150553 A KR 1020150150553A KR 20150150553 A KR20150150553 A KR 20150150553A KR 101790971 B1 KR101790971 B1 KR 101790971B1
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KR
South Korea
Prior art keywords
retainer
groove
axial direction
block
seal
Prior art date
Application number
KR1020150150553A
Other languages
Korean (ko)
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KR20170049795A (en
Inventor
권혁도
손기동
남동협
김동운
석동호
Original Assignee
(주)원에스티
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Priority to KR1020150150553A priority Critical patent/KR101790971B1/en
Publication of KR20170049795A publication Critical patent/KR20170049795A/en
Application granted granted Critical
Publication of KR101790971B1 publication Critical patent/KR101790971B1/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

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

Abstract

The present invention relates to 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 , The 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. Thus, productivity is improved, In the motion, there is no risk of leakage of various foreign substances such as heat treatment scale and oil in the pneumatic center hole, preventing the retainer from being deformed, improving the assemblability, and preventing the linear guide .

Description

Noise Reduced Linear Guide [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a linear guide with reduced noise, and more particularly, to a linear guide having a tube member in a passage through which a rolling element moves in a guide block to reduce noise.

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.

However, in the conventional linear motion guide apparatus, when the slider is linearly moved on the guide rail, noise is generated due to movement of the rolling member.

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

In order to solve the problems of the conventional art, a separate tube member made of synthetic resin is provided to provide a noise-reduced linear guide capable of suppressing noise generated from the rolling body when the linear guide linearly moves .

The linear guide with reduced noise according to the present invention includes 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 tube member is inserted into the unloading hole (113) so that the rolling element can move.

The retainer has a first U-turn hole and a second U-turn hole which are stacked in the axial direction in the axial direction and penetrate in the axial direction and are formed at the axially inner end of the first U-turn hole in the axial direction A first retainer member provided with inwardly extending engagement projections,

And a second retainer member which is laminated on the first retainer member and has a U-shaped groove formed therein to cover the first U-turn hole and the second U-turn hole and form a circulation passage;

Wherein the tube member is shorter than an axial length of the unloaded right hole; And an end of the tube member is provided in contact with an end of the coupling protrusion when the coupling protrusion of the first retainer member is inserted into the unloaded center hole.

The linear guide with reduced noise according to the present invention is provided with a tube member made of synthetic resin in a passage through which the rolling element is moved so that noises due to the driving of the rolling element are suppressed when the linear guide is linearly moved, It is effective.

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 noise reduced linear guide according to an embodiment of the present invention,
4 is a bottom perspective view showing a noise reduced linear 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 showing a block and a retainer member on one side according to an embodiment of the present invention,
8 and 9 are perspective views illustrating a cover provided in the linear guide according to an embodiment of the present invention,
10 and 11 are perspective views illustrating a support member provided in the linear guide with reduced noise according to the present invention,
12 and 13 are perspective views showing a second retainer member provided in the noise reduction linear guide of the present invention,
14 and 15 are perspective views showing a first retainer member provided in the linear guide with reduced noise according to the present invention,
16 is a cross-sectional view showing a block in which a tube member according to an embodiment of the present invention is installed,
17 is a front view showing a block in which a tube member according to an embodiment of the present invention is installed.

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

4 is a bottom perspective view illustrating a noise reduced linear guide according to an embodiment of the present invention, and FIG. 5 is a perspective view illustrating a noise- 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 where a cover is separated from a block according to an embodiment of the present invention. FIGS. 8 and 9 are perspective views showing a cover provided in the linear guide according to an embodiment of the present invention. FIGS. 10 and 11A and 11B are perspective views showing a block and a retainer member on one side, FIGS. 12 and 13 are perspective views illustrating a support member provided in the linear guide with reduced noise according to the present invention, and FIGS. 12 and 13 show a second retainer member provided in the noise- 14 and 15 are perspective views illustrating a first retainer member of a noise reduction linear guide according to an embodiment of the present invention. FIG. 16 is a perspective view illustrating a block having a tube member according to an embodiment of the present invention. 17 is a front view showing a block in which a tube member according to an embodiment of the present invention is installed.

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 17, the linear 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 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, (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 "

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. 7, reference numeral 111 denotes a fastening groove recessed in 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 to 5, a second ball supporting member 190 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, A first ball supporting member 170 is provided at the lower end of the lower load winding groove 1153 which supports the moving body 101 and is spaced apart in the width direction so as to support the rolling elements 101.

The axial ends of the upper and lower unloading central holes 1131 and 1133 are inserted into the axial ends of the upper and lower unloading central holes 1131 and 1133 so that the coupling protrusions 1314 of the first retainer 131 can be inserted and engaged. A portion whose diameter is increased inward in the axial direction is formed.

The rolling member 101 moving along the upper load winding groove 1151 is guided outward and inward in the width direction by the retainer 130 to move to the upper unloading hole 1131 to form one circulation passage, 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 and moves to the lower unloading center hole 1133 to form another circulation passage.

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.

As shown in Figs. 8 to 9, the cover 120 has a box-like 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.

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

The cover second side portion 124 is formed through the cover side portion 121 so as to be spaced apart in the width direction.

As shown in Figs. 10 and 11, 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 the cover 120 so that assembly of the guide block 100 can be completed.

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 Figs. 12 and 13, the second retainer member 133 is formed in a plate shape, and the shape of the side inward in the width direction is formed to be 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 and engaged with the cover seal second groove of the cover seal 150. 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 of the seal member 180 is inserted into the third seal portion insertion groove 1332. [ The third seal portion insertion groove 1332 extends vertically to the end portion and is provided in communication with the upper second retainer groove 1339 and the lower second retainer groove 1337. 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 of the seal member 180 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 of the seal member 180 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.

13, an U-shaped groove 1335 is concavely curved on the inner surface of the second retainer member 133 in the axial direction 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. [

As shown in FIGS. 14 to 15, the first U-turn hole 1311 and the second U-turn hole 1313 are formed in the first retainer member 131 in the 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 engaging groove 1315 for engaging the second retainer 133 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 concave, and a part of the seal member 180 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 a part of the seal member 180 is inserted.

As shown in Fig. 15, on the inner side surface in the axial direction of the first retainer member 131, the edges of the upper first U turn hole 1311-1 and the lower first U turn hole 1311-3 are axially inwardly 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. The first engaging projection 193 of the second ball supporting member 190 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. A supporting projection (not shown) of the first ball supporting member 170 is inserted into the first ball supporting member insertion groove 1318.

As shown in FIGS. 16 and 17, the tube member 140 is inserted into the unloading hole 113 so that the rolling member can move.

The tube member 140 is shorter than the axial length of the unloading hole 113. The rolling member 101 is moved inside the tube member 140.

The tube member 140 is made of synthetic resin. An example of the synthetic resin is PA66.

When the coupling protrusion 1314 of the first retainer member 131 is inserted into the unloading hole 113, the end of the tube member 140 is pressed against the end of the coupling protrusion 1314 in the axial direction . As described above, the tube member 140 pressed in the axial direction is compressed and can stably support the rolling member from the side.

Therefore, the clearance between the tube member 140 and the rolling member 101 made of a synthetic resin is minimized, so that drive noise generated when the guide block 100 linearly moves is suppressed, thereby reducing the noise generated from the linear guide .

Although the noise reduced linear 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. will be. Accordingly, the scope of the true technical protection should be determined by the technical idea of the appended claims.

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

Claims (2)

A guide rail, a guide block 100 movably provided along the guide rail, and a plurality of rolling elements 101 interposed between the guide rail and the guide block 100; The guide block 100 includes a block 110, a retainer 130, a tube member 140, a cover seal 150, a cover 120, a support member 160, A member 170, a second ball support member 190, and a seal member 180;
The block 110 has an inverted " U "shape in which both sides extend downward. The block 110 is vertically spaced apart from both sides of the downwardly extending portion. The block 110 includes an upper and a lower sub- A middle-width hole 113 is formed in the axial direction and is formed on the facing inner side surface in the vertical direction so as to extend in the axial direction of the upper load winding groove 1151 and the lower load winding groove 1153;
The retainer 130 includes a 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 are stacked in the axial direction, Forming a passageway;
The tube member 140 is a tubular body through which a rolling body can be moved, and is inserted into the unloading hole.
The cover seal 150 is provided on both sides of the block 110 in the axial direction, and a cover second groove is formed, and a second retainer projection 133 is inserted into the cover second groove;
The cover 120 is provided on both sides of the block 110 in the axial direction so as to cover the retainer 130 and the cover seal 150 provided on both sides in the axial direction of the block 110,
The support member 160 is positioned on the upper portion of the retainer 130 and is formed with first and second fastening holes and is screwed together with the cover 120;
The first ball support member 170 has a support protrusion inserted into the first ball support member insertion groove 1318 and positioned at a lower end of the lower load groove 1153 of the block 110 to support the rolling member;
The second ball support member 190 has a first engaging projection inserted into and engaged with the second ball supporting member insertion groove 1312 to be positioned between the widthwise directions of the upper load guide grooves 1151 and to support the rolling elements;
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, A plurality of retainer engagement grooves 1315 spaced apart from each other are formed, a second ball support member insertion groove 1312 is formed in an upper portion inward in the width direction, a first ball support member insertion groove The first U-turn hole 1311 is formed with an engaging projection 1314 extending axially inwardly to be inserted into the unloading hole 113 at an axially inner end of the first U-turn hole 1311;
The second retainer member 133 is laminated on the first retainer member 1311 to form 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 A second retainer protrusion 1331 bent in at least one direction inserted into the second groove of the cover seal is protruded outward in the axial direction on the axially outer side surface of the second retainer protrusion 1331, A third seal portion insertion groove 1332 which is concaved in the axial direction and bent at least once is formed on the inner side in the width direction and an upper second retainer groove 1339 having an upward concave upward in the width direction is provided in the axial direction, And an upper upwardly concave lower second retainer groove 1337 extends in the axial direction and the upper and lower second retainer grooves 1339 and 1337 are formed in the upper and lower portions of the third seal portion insertion groove 1332, And the first retainer member 131 is provided on the inner side surface in the axial direction, A plurality of retainer engaging projections 1333 are provided so as to protrude from each other; The retainer engagement protrusion 1333 is inserted into the retainer engagement groove 1315 so that the first retainer member 131 and the second retainer member 133 are laminated in the axial direction;
The seal 180 is formed by the upper first retainer groove 1319, the lower first retainer groove 1317, the upper second retainer groove 1339, the lower second retainer groove 1337, Inserted into the groove 1332;
The tube member 140 is made of synthetic resin and is shorter than the axial length of the unloading hole 113;
When the coupling protrusion 1314 of the first retainer member 131 is inserted into the unloading hole 113, the end of the tube member 140 is inserted into the tube member 140 in contact with the end of the coupling protrusion 1314, Is compressed in the axial direction so that the tube member (140) is compressed at both axial sides in the unloading hole (113) and compressed. delete
KR1020150150553A 2015-10-28 2015-10-28 Noise Reduced Linear Guide KR101790971B1 (en)

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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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