KR20240028658A - Miniature linear guideway - Google Patents

Abstract

The compact linear guideway of the present invention includes rails, sliding blocks, at least one circulating member and a retainer. The sliding block is installed on the rail, and the circulation member is installed on the rail and connected to the sliding block, so that a circulation passage provided for the ball to run is formed between the circulation member, the rail, and the sliding block, and the circulation member has a plurality of forward protrusions. is provided, the retainer is provided with a plate part and two retaining parts, both ends of each retaining part are connected to the plate part by a positioning part, the plate part of the retaining part is adjacent to the sliding block, and a plurality of retainers The positioning portion is in close contact with the plurality of forward projections, and the plurality of retaining portions of the retainer provide a retaining effect to the balls in motion, wherein the width of the plate portion of the retainer is the distance between the plurality of forward projections of the circulation member. smaller than Through this, the small linear guideway of the present invention optimizes assembly efficiency and realizes the purpose of automated assembly.

Description

Miniature linear guideway {MINIATURE LINEAR GUIDEWAY}

The present invention relates to a linear guideway, and particularly to a small linear guideway that can optimize assembly efficiency.

The retainer disclosed in JP 2632126B2 is a closed curve consisting of two locking parts and two straight parts. The retainer is a metal wire and is manufactured by split forming and then welding or joining, so manufacturing is relatively cumbersome. In addition, the overall structure is relatively weak, so it is not easy to hold and assemble, and it is easy to be damaged and deformed, resulting in poor retaining effect and even putting pressure on the ball, which may not work smoothly.

The retainer disclosed in TW I440784 consists of a retaining part and two latches, each end cap is provided with a latch groove corresponding to the latch and a guide surface adjacent to the latch groove, the guide surface has an inclination angle with respect to the end cap, and the inclination angle Reduce assembly resistance through installation. However, the retainer itself is too small to hold, and the resistance at the end of the guide surface is still large, making assembly difficult. In addition, since the retainers have a multi-stage curved structure, they are easily entangled with each other and a separate process is required to separate them, increasing inherent costs.

The retainer disclosed in US 5544954 includes a straight part and two arc-shaped locking parts, and the retainer itself is a small steel wire, so it is difficult to hold, and also, when the retainer is installed in the arc-shaped grooves of the two end covers by the arc-shaped locking parts at both ends, it is difficult to aim. Not only is it difficult to do, but it can be pressed in only by applying a certain amount of force, making assembly relatively cumbersome.

Meanwhile, in the case of a Miniature Linear Guide with a height of about 1 cm and a width of about 2 cm (even smaller sizes), all retainer assembly relies on manual labor, but not only is it small in size, but the assembly efficiency is low due to the limitations of manual labor. and productivity still need to improve.

The main purpose of the present invention is to provide a small linear guideway that can optimize assembly efficiency to realize the purpose of automated assembly.

In order to achieve the above-described main purpose, the compact linear guideway of the present invention includes a rail, a sliding block, at least one circulation member, a plurality of balls and a retainer. the sliding block is slidably installed on the rail, the sliding block has an abdomen and two relative sides connected to the abdomen; The circulation member is slidably installed on the rail and connected to the sliding block to form a circulation passage between the circulation member, the rail, and each side of the sliding block, and the circulation member has a plurality of forward protrusions. is provided; The retainer includes a plate portion, a plurality of positioning portions, and two retaining portions. Both ends of each retaining portion are connected to the plate portion by the positioning portion, and the plate portion of the retainer is connected to the sliding portion. Adjacent to the abdomen of the block, the plurality of positioning portions of the retaining portion are in close contact with the plurality of forward projections of the plurality of circulation members, and each retaining portion of the retainer is in contact with the plurality of balls. , wherein the width of the plate portion of the retainer is smaller than the distance between the plurality of forward projections of each of the circulation members.

As can be seen from the above, the small linear guideway of the present invention is relatively easy to assemble because assembly with the sliding block is completed when the retainer is pressed in toward the direction of the sliding block, thereby improving assembly efficiency and facilitating assembly. The cost can be lowered and the purpose of automated assembly can be realized.

Relatively preferably, each of the two sides of the rail is provided with a first rolling groove and a retaining groove adjacent to the first rolling groove, and each side of the sliding block is provided with a second rolling groove, and the sliding block is provided with a second rolling groove. The plurality of second rolling grooves of the block correspond one-to-one to the plurality of first rolling grooves of the rail, respectively, between the plurality of second rolling grooves of the sliding block and the plurality of first rolling grooves of the rail. A load passage is formed, and each side of the sliding block is further provided with a non-load passage, and each non-load passage passes through two relative cross-sections of the sides. The number of the circulation members is two, each of the circulation members is installed on two relative cross-sections of the sliding block and is provided with two forward projections and two return grooves, each of the return grooves is adjacent to the forward projection, Additionally, both ends of each return groove are connected to one end of the load passage and one end of the non-load passage, so that the load passage, the non-load passage and the two return grooves jointly form the circulation passage. Each of the retaining portions of the retainer is located within the retaining groove of the rail and contacts a plurality of balls passing through the load passage.

Relatively preferably, the two sides of the rail are each provided with a first rolling groove and a retaining groove adjacent to the first rolling groove, and each side of the sliding block is provided with two second rolling grooves parallel to each other and Two relative first return grooves are provided, and a load passage is formed between the second rolling groove on each side of the sliding block and the first rolling groove of the rail. The number of the circulation members is one, and the circulation member is further provided with two relative fitting grooves and four forward protrusions, and a third rolling groove and two relative second return grooves around each of the fitting grooves. installed, the plurality of second return grooves are connected to both ends of the third rolling groove, and one of the second rolling grooves on each side of the sliding block corresponds to the first rolling groove of the rail, Additionally, the other second rolling grooves on each side of the sliding block correspond to the third rolling grooves on the circulation member, and the plurality of first return grooves on each side of the sliding block correspond to the third rolling groove on the circulation member. Corresponding to the plurality of second return grooves, the first rolling groove, the plurality of second rolling grooves, the third rolling groove, the plurality of first return grooves, and the plurality of second return grooves are jointly formed into the plurality of second return grooves. Construct a circulation passage; Each of the second return grooves is adjacent to the forward projection, and each of the second return grooves is connected to the load passage, and each retaining portion of the retainer is located within the retaining groove of the rail and extends to the load passage. It touches a plurality of the balls passing through.

Relatively preferably, the bottom surface of the abdomen of the sliding block is provided with a concave portion, and the upper surface of the plate portion of the retainer is provided with a protrusion, and the retainer is inserted into the concave portion of the sliding block by the protrusion, This can improve the positioning effect between the two.

Relatively preferably, each of the circulation members is further provided with a plurality of positioning blocks, each of the positioning blocks protruding and extending from the forward projection into the receiving groove along the stretching direction of the rail, and each of the positioning blocks of the retainer The determining portion is engaged with the positioning block of each of the circulation members, thereby improving the positioning effect between the two.

Relatively preferably, the retainer is further provided with a plurality of wing portions, and each of the wing portions extends in a direction away from the positioning portion and contacts the outer end surface of the circulation member to ensure structural stability of the retainer. improve

Relatively preferably, the outer end surface of each of the circulation members is provided with a plurality of positioning pillars, each of the wings of the retainer is provided with a positioning hole, and the retainer is provided with a plurality of positioning holes by the plurality of positioning holes. It is engaged with the plurality of positioning pillars of the circulation member, thereby improving the positioning effect between the two.

Relatively preferably, the retainer is further provided with a plurality of wings, and each wing part extends upward from one end of the retaining part and contacts the outer end surface of the circulation member, thereby improving the structural stability of the retainer.

Relatively preferably, the cross-sectional shape of the retaining portion is rectangular, and the ratio of the width to the thickness of the retaining portion is 1.5 or more, thereby ensuring that the retaining portion has sufficient structural strength and is not easily deformed. Thus, a good retaining effect is provided.

Relatively preferably, the cross-sectional shape of each positioning portion is rectangular, and the ratio of the length to the thickness of each positioning portion is 1.5 or more, thereby ensuring that each of the positioning portions has sufficient structural strength and is not easily deformed, thereby providing good Provides positioning effect.

The specific structure, features, assembly or use method of the small linear guideway provided by the present invention will be described in the detailed description of the subsequent embodiments. However, those of ordinary skill in the field of the present invention will understand that the specific description and specific examples cited in the present invention are only for illustrating the present invention and are not intended to limit the scope of the patent application for the present invention. There will be.

1 is a perspective view of a small linear guideway according to a first embodiment of the present invention.
Figure 2 is an exploded perspective view of a small linear guideway of the first embodiment of the present invention.
FIG. 3 is a cross-sectional view taken along line 3-3 in FIG. 1.
Figure 4 is a cross-sectional view taken along line 4-4 in Figure 1.
Figure 5 is a partially exploded perspective view with the rails omitted in the small linear guideway of the first embodiment of the present invention.
Figure 6 is a combination diagram of Figure 5.
Figure 7 is a bottom view with the rails omitted in the small linear guideway of the first embodiment of the present invention.
Figure 8 is a perspective view of a retainer provided in the small linear guideway of the first embodiment of the present invention.
FIG. 9 is a cross-sectional view taken along line 9-9 in FIG. 8.
FIG. 10 is a cross-sectional view taken along line 10-10 of FIG. 8.
Figure 11 is a partially exploded perspective view with the rails omitted in the small linear guideway of the second embodiment of the present invention.
Figure 12 is a cross-sectional view omitting the rail in the small linear guideway of the second embodiment of the present invention.
Figure 13 is a partial perspective view with the rails omitted in the small linear guideway of the third embodiment of the present invention.
Figure 14 is a perspective view of a retainer provided in the small linear guideway of the fourth embodiment of the present invention.
Figure 15 is a perspective view with the rails omitted in the small linear guideway of the fourth embodiment of the present invention.
Figure 16 is an exploded perspective view with the rails omitted in the small linear guideway of the fifth embodiment of the present invention.
Figure 17 is a perspective view with the rails omitted in the small linear guideway of the fifth embodiment of the present invention.
Figure 18 is a perspective view of a retainer provided in the small linear guideway of the sixth embodiment of the present invention.
Figure 19 is a perspective view with the rails omitted in the small linear guideway of the sixth embodiment of the present invention.
Figure 20 is an exploded perspective view with the rails omitted in the small linear guideway of the seventh embodiment of the present invention.
Figure 21 is a perspective view with the rails omitted in the small linear guideway of the seventh embodiment of the present invention.
Figure 22 is a perspective view of a small linear guideway according to the eighth embodiment of the present invention.
Figure 23 is an exploded perspective view with the rails omitted in the small linear guideway of the eighth embodiment of the present invention.
FIG. 24 is a cross-sectional view taken along line 24-24 in FIG. 22.
FIG. 25 is a cross-sectional view taken along line 25-25 in FIG. 22.

All terms related to directionality throughout the specification, including the embodiments and scope of the patent application to be introduced below, are based on the direction of the drawings. In addition, in the embodiments and drawings introduced below, the same reference numerals indicate the same or similar components or structural features.

First, referring to FIG. 1, the miniature linear guideway (10, Miniature Linear Guide) of the first embodiment of the present invention is applied to miniaturized precision devices or when space is limited, and in size, the height is about 1 cm and the width is about 1 cm. is about 2cm. 1 and 2, the small linear guideway 10 of the first embodiment of the present invention includes a rail 20, a sliding block 30, two circulation members 40, and a plurality of balls 50. and retainer 60.

The two left and right sides of the rail 20 are each provided with a first rolling groove 22 and a retaining groove 24 adjacent to the first rolling groove 22.

The sliding block 30 is provided with an abdomen 31 and two relative sides 32 connected to the abdomen 31, the inner surface of each side 32 is provided with a second rolling groove 33, and the sliding block 30 is provided with a second rolling groove 33. The block 30 is assembled and installed on the rail 20 in a sliding manner, so that the plurality of second rolling grooves 33 of the sliding block 30 are connected to the plurality of first rolling grooves 22 of the rail 20. correspond in a one-to-one manner. Through this, load passages 52 are formed between the plurality of second rolling grooves 33 of the sliding block 30 and the plurality of first rolling grooves 22 of the rail 20, respectively. In addition, as shown in FIGS. 2 and 3, each side portion 32 is further provided with a non-load passage 34, and the non-load passage 34 passes through two front and rear cross sections of the side portion 32.

The plurality of circulation members 40 are installed on two front and rear cross sections of the sliding block 30. Both left and right ends of each circulation member 40 are provided with a forward protrusion 41 and a return groove 42 adjacent to the forward protrusion 41, and both ends of each return groove 42 are provided with a load passage 52. ) and one end of the non-load passage 34, so that the load passage 52, the non-load passage 34, and the front and rear two return grooves 42 jointly allow the plurality of balls 50 to travel. A circulation passage 54 is provided (as shown in FIG. 3). In addition, as shown in FIG. 5, each circulation member 40 is further provided with a receiving groove 43 adjacent to the plurality of forward-facing protrusions 41.

The retainer 60 is an integrated structure manufactured from a metal material through press processing. As shown in Figure 2, the retainer 60 is provided with a plate portion 61, four positioning portions 62, and two retaining portions 63, of which the plate portion 61 has a rectangular shape. , In addition, the width W1 of the plate portion 61 is smaller than the distance D between the plurality of forward-facing protrusions 41 (as shown in FIGS. 7 and 8), and the plurality of positioning portions 62 ) is connected to the four corners of the plate portion 61 on one hand, and is connected to both ends of the plurality of retaining portions 63 on the other hand. When assembled, as shown in FIGS. 5 and 6, since the width W1 of the plate portion 61 is smaller than the distance D between the plurality of forward protrusions 41, the retainer 60 is unidirectional. It can be assembled by pressing directly into the sliding block 30 along the line, and after assembly is completed, as shown in FIGS. 3 and 4, the plate portion 61 of the retainer 60 is located on the abdominal side of the sliding block 30. The plurality of positioning portions 62 of the retaining portion 63 are in contact with the plurality of forward projections 41 of the plurality of circulation members 40, and the plurality of positioning portions 62 of the plurality of circulation members 40 are in contact with the It is located within the plurality of receiving grooves 43 of the circulation member 40, so that the retainer 60 is positioned, and the plurality of retaining parts 63 of the retainer 60 are positioned in the rail 20. Contacting the plurality of balls 50 located in the retaining groove 24 and passing through the load passage 52, the retainer 60 retains the plurality of balls 50 passing through the load passage 52. Ensure that it provides effectiveness.

Meanwhile, as shown in FIGS. 8 and 9, the cross-sectional shape of the retaining portion 63 is rectangular, and the ratio of the width to thickness of the retaining portion 63 is 1.5 or more, and as a result, the retaining portion 63 ) has sufficient structural strength and is not easily deformed, thereby providing a good retaining effect. As shown in FIGS. 8 and 10, the cross-sectional shape of each positioning portion 62 is also rectangular, and the ratio of the length to the thickness of each positioning portion 62 is 1.5 or more, whereby each positioning portion 62 By ensuring that (62) has sufficient structural strength and is not easily deformed, it provides a good positioning effect.

In order to further improve the structural stability of the retainer 60, the sliding block 30, the circulation member 40 and the retainer 60 are coupled and positioned together with different structural changes in the following examples.

As shown in Figure 11, in the second embodiment of the present invention, the bottom surface of the abdomen 31 of the sliding block 30 is provided with a concave portion 35 forming a rectangular shape, and the retainer 60 is formed into a rectangular shape. When the protrusion 64 is integrally extended to protrude upward from the plate portion 61 and the retainer 60 is press-fitted into the sliding block 30, as shown in FIG. 12, the protrusion 64 of the retainer 60 is It is inserted into the concave portion 35 of the sliding block 30, thereby improving the positioning effect between the two.

As shown in Figure 13, in the third embodiment of the present invention, each circulation member 40 is further provided with two positioning blocks 44, and each positioning block 44 has a forward protrusion 41. When the retainer 60 is assembled, the plurality of positioning portions 62 of the retainer 60 are protruded and stretched into the receiving groove 43 along the stretching direction of the rail 20. ) is engaged with a plurality of the positioning blocks 44 in a one-to-one manner, thereby improving the positioning effect between the two.

As shown in FIG. 14, in the fourth embodiment of the present invention, the retainer 60 is further provided with four wing parts 65, and each wing part 65 is connected to the plate part from the positioning part 62. When stretched horizontally in the direction away from (61) and the retainer 60 is assembled, as shown in FIG. 15, the plurality of wings 65 of the retainer 60 are connected to the plurality of circulation members ( By contacting the outer end surface 45 of 40, the retainer 60 produces a clamping effect. 16 and 17, in the fifth embodiment of the present invention, the outer end surface 45 of each circulation member 40 further provides two positioning pillars 46, and each of the retainers The wing portion 65 is provided with a positioning hole 66, and the retainer moves the plurality of positioning pillars 46 of the plurality of circulation members 40 through the positioning hole 66 of each wing portion 65. ) in a one-to-one manner, improving the positioning effect between the two.

However, there may be further changes in the quantity and position of the wing portions 65, and as shown in FIG. 18, in the sixth embodiment of the present invention, the retainer 60 has two more wing portions 65. provided, the wing portions 65 are extended upward from both ends of the retaining portion 63, and when the retainer 60 is assembled, as shown in FIG. 19, the two wing portions 65 of the retainer 60 Contacts the outer end surface 45 of each circulation member 40, and through this, the retainer 60 can similarly generate a clamping effect. In addition, as shown in FIGS. 20 and 21, in the seventh embodiment of the present invention, the outer end surface 45 of each circulation member 40 is provided with a positioning pillar 46, and the retainer 60 Each wing 65 is provided with a positioning hole 66, and the retainer 60 is caught on the positioning pillar 46 of the circulation member 40 by the positioning hole 66 of the wing 65. Combined, it improves the positioning effect between the two.

Meanwhile, the number of circulation members is two in all in the above embodiment, and in reality, only one circulation member can be installed according to the guideway of a different structure. Additionally, referring to FIGS. 22 and 23, the eighth embodiment of the present invention The example small linear guideway 10' includes a rail 20, a sliding block 70, a circulation member 80, a plurality of balls 50, and a retainer 60.

The two sides of the rail 20 are each provided with a first rolling groove 22 and a retaining groove 24 adjacent to the first rolling groove 22.

Two second rolling grooves 73 parallel to each other and two relative first return grooves 74 are provided on each side 72 of the sliding block 70, and the first return groove 74 is the second rolling groove. Adjacent to both ends of the groove 73. The sliding block 70 is assembled and installed on the rail 20, between one of the second rolling grooves 73 on each side 72 of the sliding block 70 and the first rolling groove 22 of the rail 20. A load passage 52 is formed in each (as shown in FIG. 24).

The circulation member 80 is provided with two relative fitting grooves 81, and has one third rolling groove 82 and two relative second return grooves 83 around each fitting groove 81. It is installed, and the plurality of second return grooves 83 are connected to both ends of the third rolling groove 82. Each side 72 of the sliding block 70 is assembled and installed in the fitting groove 81 of the circulation member 80, and is connected to the other second rolling groove 73 of each side 72 of the sliding block 70. A non-load passage 56 is formed between the third rolling grooves 82 of the circulation member 80, and a plurality of first return grooves 74 on each side 72 of the sliding block 70 are formed. It corresponds to the plurality of second return grooves 83 of the circulation member 80. Through this, as shown in FIG. 25, the load passage 52, the non-load passage 56, the plurality of first return grooves 74, and the plurality of second return grooves 83 jointly form a plurality of A circulation passage 54 is provided for the ball 50 to travel. In addition, as shown in FIG. 23, the circulation member 80 is further provided with four forward projections 84, and each forward projection 84 is adjacent to one second return groove 83.

The retainer 60 is assembled by press-fitting directly into the sliding block 30 along a single direction, and after assembly is completed, as shown in FIGS. 24 and 25, the plate portion 61 of the retainer 60 is Adjacent to the abdomen 71 of the sliding block 70, the plurality of positioning portions 62 of the retainer 60 are in contact with the plurality of forward protrusions 84 of the circulation member 80, and the retainer ( 60 is positioned, and the plurality of retaining portions 63 of the retainer 60 are located in the retaining groove 24 of the rail 20 and are positioned in the plurality of balls passing through the load passage 52. 50), so that the retainer 60 provides a retaining effect to the plurality of balls 50 passing through the load passage 52.

In summary, the retainer 60 provided in the present invention can be assembled with the sliding block 30 by pressing it in a single direction, making assembly relatively easy, reducing the assembly process, and combining it with different structural designs. This can improve the positioning effect. Therefore, the purpose of automated assembly can be realized by effectively improving assembly efficiency and lowering assembly costs.

10: Small linear guideway
20: rail
22: First rolling groove
24: Retaining Home
30: sliding block
31: abdomen
32: side
33: Second rolling groove
34: Non-load passage
35: recess
40: absence of circulation
41: forward-facing protrusion
D: Distance between a plurality of said forward-facing protrusions
42: return home
43: Accommodation groove
44: Positioning block
45: External cross section
46: Positioning pillar
50: ball
52: load passage
54: circulation passage
56: non-load passage
60: retainer
61: Plate part
W1: Width of plate part
62: Positioning unit
L: Length of positioning part
T2: Thickness of positioning part
63: Retaining part
W2: Width of retaining part
T1: Thickness of retaining part
64: protrusion
65: wing part
66: Positioning hole
70: sliding block
71: abdomen
72: side
73: Second rolling groove
74: 1st return home
80: absence of circulation
81: Fitting coupling groove
82: Third rolling groove
83: Second return home
84: forward-facing protrusion

Claims (10)

Comprising rails, sliding blocks, at least one circulation member, a plurality of balls and retainers,
The sliding block is slidably installed on the rail, has an abdomen and two side parts, and the plurality of side parts are connected to two relative sides of the abdomen,
The circulation member is slidably installed on the rail and connected to the sliding block to form a circulation passage between the circulation member, the rail, and each side of the sliding block, and the circulation member has a plurality of directions. ) is provided with a protrusion,
The ball is installed in the plurality of circulation passages,
The retainer includes a plate portion, a plurality of positioning portions, and two retaining portions. Both ends of each retaining portion are connected to the plate portion by the positioning portion, and the plate portion of the retainer is connected to the sliding portion. Adjacent to the abdomen of the block, the plurality of positioning portions of the retaining portion are in close contact with the plurality of forward projections of the plurality of circulation members, and each retaining portion of the retainer is in contact with the plurality of balls. , wherein the width of the plate portion of the retainer is smaller than the distance between the plurality of forward projections of each of the circulation members,
Small linear guideway. According to paragraph 1,
Each of the two sides of the rail is provided with a first rolling groove and a retaining groove adjacent to the first rolling groove, each side of the sliding block is provided with a second rolling groove, and a plurality of grooves of the sliding block are provided. The second rolling groove corresponds one to one to the plurality of first rolling grooves of the rail, so that a load passage is formed between the plurality of second rolling grooves of the sliding block and the plurality of first rolling grooves of the rail, respectively. wherein each side of the sliding block is further provided with a non-load passage, each non-load passage penetrating two relative cross-sections of the side; The number of the circulation members is two, each of the circulation members is installed on two relative cross-sections of the sliding block and is provided with two forward projections and two return grooves, each of the return grooves is adjacent to the forward projection, Additionally, both ends of each of the return grooves are connected to one end of the load passage and one end of the non-load passage, such that the load passage, the non-load passage and the two return grooves jointly form the circulation passage; A compact linear guideway, wherein each retaining portion of the retainer is located within the retaining groove of the rail and contacts a plurality of the balls passing through the load passage. According to paragraph 1,
Each of the two sides of the rail is provided with a first rolling groove and a retaining groove adjacent to the first rolling groove, and each side of the sliding block is provided with two second rolling grooves parallel to each other and two second rolling grooves relative to each other. 1 return groove is provided, and a load passage is formed between the second rolling groove on each side of the sliding block and the first rolling groove of the rail; The quantity of the circulation member is one, and the circulation member is further provided with two relative fitting grooves and four forward protrusions, one third rolling groove and two relative second returns around each of the fitting grooves. grooves are provided, the plurality of second return grooves are connected to both ends of the third rolling groove, and one of the second rolling grooves on each side of the sliding block corresponds to the first rolling groove of the rail. In addition, the other second rolling grooves on each side of the sliding block correspond to the third rolling grooves on the circulation member, and the plurality of first return grooves on each side of the sliding block correspond to the circulation member. Corresponding to the plurality of second return grooves of the member, the first rolling groove, the plurality of second rolling grooves, the third rolling groove, the plurality of first return grooves and the plurality of second return grooves are common. to configure the circulation passage;
Each of the second return grooves is adjacent to the forward projection, and each of the second return grooves is connected to the load passage, and each retaining portion of the retainer is located within the retaining groove of the rail and extends to the load passage. A small linear guideway that contacts a plurality of passing balls. According to paragraph 1,
A small linear guideway wherein the bottom surface of the abdomen of the sliding block is provided with a concave portion, the retainer is integrally formed with a protrusion from the plate portion, and the protrusion is inserted into the concave portion. According to paragraph 1,
The circulation member is further provided with a plurality of positioning blocks, each of the positioning blocks protrudes and extends from the forward protruding portion along the stretching direction of the rail, and each of the positioning portions of the retainer determines the position of each of the circulation members. A compact linear guideway that is hooked onto a crystal block. According to paragraph 1,
The retainer is further provided with a plurality of wing parts, and each wing part is extended in a direction away from the positioning part and contacts the outer end surface of the circulation member. According to clause 6,
The outer end surface of the circulation member is provided with a plurality of positioning pillars, each wing portion of the retainer is provided with a positioning hole, and the plurality of positioning holes are engaged with the plurality of positioning pillars. Linear guideway. According to paragraph 1,
The retainer is further provided with a plurality of wing parts, and each wing part extends upward from one end of the retaining part and contacts the outer end surface of the circulation member. According to paragraph 1,
A small linear guideway, wherein the cross-sectional shape of each retaining portion is rectangular, and the ratio of width to thickness of each retaining portion is 1.5 or more. According to paragraph 1,
A small linear guideway, wherein the cross-sectional shape of each of the positioning portions is rectangular, and the ratio of the length to the thickness of each positioning portion is 1.5 or more.