TW201422940A - Guiding groove for rolling member retaining chain of linear cuide - Google Patents

Abstract

The present invention relates to a guiding groove for a rolling member retaining chain of a linear guide, and intends for solving the unsmoothly movement problem that the rolling member retaining chain will be stuck into the connecting gap(s) of the outer stop wall of the guiding groove in a miniaturized linear guide; wherein, the connecting gaps are formed at the connecting sections between the adjacent circulation bodies, when the circulation bodies are not completedly/fully formed by the injection molding. The outer stop wall of the two adjacent circulation bodies is separated to a first and a second stop walls. The first and second stop walls connect to each other on a connecting face. A tangential point is defined by the connection between the second stop wall and the connecting face. When the two adjacent circulation bodies connect to each other at the direction changing path, an angle defined between a tangential direction of the tangential point and the connecting face is an acute angle. When the two adjacent circulation bodies connect to each other at the linear path, an angle defined between the second stop wall and the connecting face is an acute angle. Under the aforementioned arrangements, the rolling member retaining chain is prevented from being stuck into the connecting gap of the guiding groove so as to move smoothly in the guiding groove of the linear guide.

Description

Rolling element holding linear guide groove structure for linear slide

The invention relates to a rolling body retaining chain guiding groove structure of a linear sliding rail, in particular to a guiding component of a circulating component which is arranged in a rigid body of a sliding block, an outer retaining wall and an inner retaining wall of a guiding groove of an adjacent circulating component The arrangement with the height difference and the curved lead angle, and the special angle design of the joint surface of the outer retaining wall and the adjacent circulating component, enable the rolling element to keep the chain running smoothly in the guiding groove.

For the linear slide structure, please refer to the seventh to ninth drawings, so that a slide rigid body (D) is placed on a slide rail (E); a loop assembly (F1) is arranged on the slide rigid body (D). (F2), the circulation component (F1) (F2) provides a circulation passage (G) between the slider rigid body (D) and the slide rail (E), and the circulation passage (G) is placed in the row of rolling bodies ( H), by rolling element (H) cyclically rolling in the circulation channel (G), so that the slider rigid body (D) can make an infinite stroke reciprocating motion on the sliding rail (E). In order to prevent adjacent rolling elements (H) from colliding with each other when rolling, the rolling element holding chain (I) is used to separate the two rolling elements (H), and the cycle component (F1) (F2) is A guide groove (J) is provided in the circulation passage (G) to guide the rolling element holding chain (I).

However, as shown in the ninth figure, the general cycle component (F1) (F2) is a polymer plastic, which is produced by injection molding, and because of the fluidity and viscosity of the fluid, at the corner of the mold, that is, the edge of the molded product. There will be a situation where the shot is not full, so the joint of the adjacent circulating component (F1) (F2) will form a seam (K) because the shot is not full, and the rolling element keeps the chain (I) in the guide groove (J). When running to the seam (K), the rolling element retaining chain (I) end edge may not operate smoothly due to the insertion of the seam (K), and may even damage the slider rigid body (D).

A retention chain design and guide channel structure has been disclosed in U.S. Patent No. US 2007/0147714. Referring to Figures 30A through 33C of the case, the front case causes the swivel passage to be retracted to a relative height, and the rolling elements maintain the chain end edges in a curved shape. When the rolling element retaining chain enters the rotary passage by the linear passage, the rolling element keeps the end edge of the chain close to the inner side wall of the guiding passage; when the rolling element retaining chain enters the linear passage from the rotary passage, the rolling element maintains the side edge of the chain close to Guide the outer side of the channel. The guide channel is retracted relative to the height, and the end edges of the rolling element retaining chain are bent inwardly so that the rolling element retaining chain is able to avoid the seam at the intersection of the two parts constituting the guiding passage and the linear passage. However, in the previous case, the rolling element keeps the chain from turning without interference, and the radius of curvature (R1) of the end of the rolling element holding chain is larger than the radius of curvature (R2) of the rotating channel, but the rolling element keeps the edge of the chain. The radius of curvature changes gradually with the number of uses, and when the relative height of the above-mentioned rotary channel and the linear channel is too large, it is more likely to cause interference during operation.

In addition, the Republic of China Patent No. I259873 "with a rolling element retaining chain linear slide", in this case, the guiding groove of the linear passage has a groove at the junction of the linear passage and the rotary passage, thereby allowing The rolling elements keep the chain smooth from the swivel channel into the straight channel. However, when the rolling element keeps the chain from the linear passage into the rotary passage, the rolling element retaining chain is prone to interference.

In summary, the rolling element retaining chain is prone to interference when guided by the guiding groove, so it is necessary to provide a new type of guiding groove in the circulating channel of the linear sliding rail to keep the rolling element in the chain. It runs smoothly in all conditions.

In view of this, in order to enable the rolling element holding chain to adapt to various conditions, the present invention can smoothly operate. The present invention provides a rolling body holding chain guiding groove structure of a linear sliding rail.

The sliding body rigid body is disposed on a sliding rail, and the sliding body rigid body group is provided with a plurality of circulating components, whereby the circulating component provides a circulation channel between the sliding body rigid body and the sliding rail, and the circulation channel includes Two linear passages and two rotary passages are connected at both ends of the two linear passages, and the circulation assembly provides a guiding groove in the circulation passage for guiding a rolling element holding chain; the circulation component is guided by the circulation component The outer periphery of the groove provides an outer retaining wall and an inner retaining wall. In at least two adjacent assembled circulating components, the outer retaining wall is partitioned into a first outer retaining wall and a second outer retaining wall. An outer retaining wall and a second outer retaining wall are connected to a joint surface; if the two adjacent circulating components are connected to the rotating passage, the joint between the second outer retaining wall and the joint surface is a tangent direction of a tangent point The angle between the two adjacent circulating components is an acute angle; if the two adjacent circulating components are connected to the linear passage, the angle between the second outer retaining wall and the engaging surface is an acute angle; the second outer retaining wall and the inner gear The distance between the walls is larger than the first outer retaining wall and the inner Walls pitch.

Further, the first outer retaining wall is provided with an arc-shaped guide angle toward the joint surface.

Further, when the two adjacent circulating components are connected to the rotating channel, the contact between the second outer retaining wall and the joint surface is a tangent to the tangent point and the angle between the joint surface is between 10 degrees and 60 degrees; the two adjacent When the circulation component is connected to the linear passage, the angle between the second outer retaining wall and the joint surface is between 10 degrees and 60 degrees.

Further, the foregoing circulation assembly includes a holding assembly assembled in the rigid body of the sliding seat, and an end cover assembled at both ends of the rigid body of the sliding seat, and the linear passage and the first outer retaining wall are provided by the holding assembly, and the end is provided by the end The cover provides the swivel passage and the second outer retaining wall.

The invention has the following effects:

1. The invention adopts the guiding groove of the adjacent circulating component, the outer retaining wall and the inner retaining wall have the height difference and the arc-shaped guiding angle, and the special angle design of the joint surface of the outer retaining wall and the adjacent circulating component, When the rolling element holding chain is guided by the guiding groove, the seam at the position of the engaging surface of the circulation component is avoided, so that the rolling element retaining chain can smoothly travel in the guiding groove.

2. In the foregoing, when the two adjacent circulating components of the present invention are transferred to the rotary passage, the angle between the tangential direction of the tangent point of the joint between the second outer retaining wall and the joint surface and the joint surface is an acute angle; When the circulation component is connected to the linear passage, the angle between the second outer retaining wall and the joint surface is an acute angle. Through the above angle design, in conjunction with the arrangement of the arcuate guide angles of the first outer retaining wall, the rolling elements keep the chain running smoothly regardless of whether the rolling element retaining chain is traveling in a forward or reverse direction.

In synthesizing the above technical features, the main effects of the rolling element retaining chain guiding groove structure of the linear slide of the present invention can be clearly demonstrated in the following embodiments.

Referring to the first embodiment of the present invention, a sliding body rigid body (1) is placed on a sliding rail (2), and the sliding body rigid body (1) group is provided with a plurality of cyclic components. Providing a circulation passage (A) between the rigid body (1) of the carriage and the slide rail (2), the circulation assembly includes a holding assembly (3) assembled in the rigid body (1) of the carriage, and assembled therein An end cover (4) at both ends of the rigid body (1) of the carriage, and the retaining assembly (3) provides two linear passages on the rigid body (1) of the slide, including the rigid body (1) of the slide and the slide rail ( 2) between the load shedding channel (A1) and the no-load channel (A2) in the rigid body (1) of the carriage, provided by the end cap (4) at both ends of the rigid body (1) of the carriage A turning passage (A3) connects the load passage (A1) and the unloaded passage (A2) to form the aforementioned circulation passage (A).

The aforementioned circulation assembly provides a guiding groove (B) in the circulation passage (A) for guiding a rolling element holding chain (5) which is placed in the chain (5) and arranged in a row of rolling The body (6) is cyclically rolled in the aforementioned circulation passage (A) by the rolling elements (6) arranged in a row, so that the rigid body (1) of the carriage can reciprocate linearly on the sliding rail (2). And at the periphery of the guiding groove (B), there is an outer retaining wall (B1) and an inner retaining wall (B2), and the inner portion of the outer retaining wall (B1) includes a first portion provided by the retaining assembly (3) An outer retaining wall (B11), and a second outer retaining wall (B12) provided by the end cap (4), the first outer retaining wall (B11) extending from the unloaded passage (A2) and the second outer The retaining wall (B12) is connected to the rotating passage (A3), and the first outer retaining wall (B11) and the second outer retaining wall (B12) are connected to a joint surface (C), and the second outer The contact between the retaining wall (B12) and the joint surface (C) is an acute angle (θ1) between the tangential direction of the tangent point and the joint surface (C), and the acute angle (θ1) can be between 10 degrees and 60 degrees. Between the degrees, and the distance between the second outer retaining wall (B12) and the inner retaining wall (B2) (d2) is greater than the distance between the first outer retaining wall (B11) and the inner retaining wall (B2) (d1) And, by means of the first outer retaining wall (B11), an arc-shaped guide angle (B111) is arranged in the direction of the joint surface (C).

Referring to FIGS. 2A and 2B, when the rolling element holding chain (1) enters the aforementioned revolving channel (A3) from the aforementioned unloaded passage (A2) in the guiding groove (B), The rolling element holding chain (1) is guided by the arcuate lead angle (B111) on the first outer retaining wall (B11), avoiding the first outer retaining wall (B11) and the second outer retaining wall ( B12) is the position of the joint surface (C), so that it is not affected by the joint between the holding member (3) and the end cap (4) at the joint surface (C) due to the insufficient shot of the injection molding. The rolling element holding chain (1) can smoothly pass through the joint surface (C).

Referring to FIG. 3A and FIG. 3B, the contact between the second outer retaining wall (B12) and the joint surface (C) is a tangent point of the tangent point and the joint surface (C) is An acute angle (θ1), and the first outer retaining wall (B11) protrudes outward such that a distance (d2) between the second outer retaining wall (B12) and the inner retaining wall (B2) is larger than the first outer retaining wall ( B11) is spaced from the inner retaining wall (B1) by (d2), so by providing the aforementioned arcuate lead angle (B111), when the rolling element retaining chain (1) is in the guiding groove (B) When the slewing passage (A3) enters the aforementioned unloaded passage (A2), the rolling element holding chain (1) is also guided by the curved guide angle (B111) on the first outer retaining wall (B11), and avoids Opening the joint surface (C) of the first outer retaining wall (B11) and the second outer retaining wall (B12), and therefore not subject to the aforementioned retaining assembly (3) and the end cap (4) due to injection molding. The phenomenon of fullness and the joint at the joint surface (C) can be smoothly passed through the joint surface (C).

Referring to the fourth embodiment, the second embodiment of the present invention is different from the first embodiment in that the first outer retaining wall (B11) and the second outer retaining wall (B12) are connected to the foregoing. In the load channel (A2), the angle between the second outer retaining wall (B12) and the joint surface (C) is an acute angle (θ2), and the angle of the acute angle (θ2) may be between 10 degrees and 60 degrees. The distance between the first outer retaining wall (B11) and the inner retaining wall (B2) (d1) is smaller than the distance between the second outer retaining wall (B12) and the inner retaining wall (B2) (d2), and thereby An arcuate guide angle (B111) is disposed in the direction of the joint surface (C) of the first outer retaining wall (B11).

Referring to FIGS. 5A and 5B, when the rolling element holding chain (1) enters the aforementioned revolving channel (A3) from the aforementioned unloaded passage (A2) in the guiding groove (B), The rolling element holding chain (1) is guided by the arcuate lead angle (B111) on the first outer retaining wall (B11), avoiding the first outer retaining wall (B11) and the second outer retaining wall ( B12) is the position of the joint surface (C), so that it is not affected by the joint between the holding member (3) and the end cap (4) at the joint surface (C) due to the insufficient shot of the injection molding. The rolling element holding chain (1) can smoothly pass through the joint surface (C).

Referring to FIGS. 6A and 6B, the angle between the second outer retaining wall (B12) and the joint surface (C) is an acute angle (θ2), and the first outer retaining wall (B11) Projecting outwardly such that the distance (d2) between the second outer retaining wall (B12) and the inner retaining wall (B2) is greater than the distance between the first outer retaining wall (B11) and the inner retaining wall (B2) (d1) Therefore, by providing the aforementioned arcuate lead angle (B111), when the rolling element holding chain (1) enters the aforementioned unloaded passage (A2) from the aforementioned turning passage (A3) in the guiding groove (B) The rolling element holding chain (1) is also guided by the arcuate guide angle (B111) on the first outer retaining wall (B11), avoiding the first outer retaining wall (B11) and the second outer gear The position of the joint surface (C) of the wall (B12) is therefore not subject to the seam of the aforementioned retaining assembly (3) and the end cap (4) at the joint surface (C) due to the insufficient shot of the injection molding. Influence, and can smoothly pass through the joint surface (C) position.

The above embodiment is illustrative of a configuration in which the guiding groove is permeable between adjacent circulating components, so that the rolling element retaining chain can avoid the joint of the adjacent circulating component joint surface, and is not limited to the above embodiment type, any two The above-described guiding groove structure can be made between adjacent circulating components.

In view of the foregoing description of the embodiments, the operation and the use of the present invention and the effects of the present invention are fully understood, but the above described embodiments are merely preferred embodiments of the present invention, and the invention may not be limited thereto. Included within the scope of the present invention are the scope of the present invention.

(2). . . Slide rail

(3). . . Holding component

(4). . . End cap

(5). . . Rolling element retention chain

(6). . . Rolling body

(A). . . Circulation channel

(A1). . . Load channel

(A2). . . No load channel

(A3). . . Swing channel

(B). . . Guide groove

(B1). . . External retaining wall

(B11). . . First outer wall

(B111). . . Curved lead

(B12). . . Second outer wall

(B2). . . Inner retaining wall

(C). . . Joint surface

(d1). . . The distance between the first outer retaining wall and the inner retaining wall

(d2). . . The distance between the second outer retaining wall and the inner retaining wall

(θ1). . . Angle

(θ2). . . Angle

(D). . . Slide rigid body

(E). . . Slide rail

(F1). . . Loop component

(F2). . . Loop component

(G). . . Circulation channel

(H). . . Rolling body

(I). . . Rolling element retention chain

(J). . . Guide groove

(K). . . seam

The first figure is a schematic view showing the state of use of the first embodiment of the present invention.

In the first embodiment of the present invention, the rolling element retaining chain enters the swivel passage in the guiding groove by the unloaded passage and avoids the position of the joint surface of the first outer retaining wall and the second outer retaining wall. The continuation of the schematic diagram.

In the second embodiment of the present invention, the rolling element retaining chain enters the rotary passage in the guiding groove by the unloaded passage and avoids the position of the joint surface of the first outer retaining wall and the second outer retaining wall. The second of the continuous schematic.

In the first embodiment of the present invention, the rolling element retaining chain enters the rotating passage in the guiding groove by the unloaded passage and avoids the position of the joint surface of the first outer retaining wall and the second outer retaining wall. The third of the continuous schematic.

In the third embodiment of the present invention, the rolling element retaining chain enters the unloaded passage in the guiding groove by the turning passage and avoids the position of the joint surface of the first outer retaining wall and the second outer retaining wall. The continuation of the schematic diagram.

In the third embodiment of the present invention, the rolling element retaining chain enters the unloaded passage in the guiding groove by the turning passage and avoids the position of the joint surface of the first outer retaining wall and the second outer retaining wall. The second of the continuous schematic.

In the third embodiment of the present invention, the rolling element retaining chain enters the unloaded passage in the guiding groove by the turning passage and avoids the position of the joint surface of the first outer retaining wall and the second outer retaining wall. The third of the continuous schematic.

The fourth figure is a schematic view showing the state of use of the second embodiment of the present invention.

In the second embodiment of the present invention, the rolling element retaining chain enters the swivel passage in the guiding groove by the unloaded passage and avoids the position of the joint surface of the first outer retaining wall and the second outer retaining wall. The continuation of the schematic diagram.

In the second embodiment of the present invention, the rolling element retaining chain enters the rotary passage from the unloaded passage in the guiding groove and avoids the position of the joint surface of the first outer retaining wall and the second outer retaining wall. The second of the continuous schematic.

The fifth C is a second embodiment of the present invention, in which the rolling element retaining chain enters the rotating passage from the unloaded passage in the guiding groove and avoids the position of the joint surface of the first outer retaining wall and the second outer retaining wall. The third of the continuous schematic.

In the second embodiment of the present invention, the rolling element retaining chain enters the unloaded passage by the rotary passage in the guiding groove and avoids the position of the joint surface of the first outer retaining wall and the second outer retaining wall. The continuation of the schematic diagram.

In the second embodiment of the present invention, the rolling element retaining chain enters the unloaded passage in the guiding groove by the turning passage and avoids the position of the joint surface of the first outer retaining wall and the second outer retaining wall. The second of the continuous schematic.

In the second embodiment of the present invention, the rolling element retaining chain enters the unloaded passage in the guiding groove by the turning passage and avoids the position of the joint surface of the first outer retaining wall and the second outer retaining wall. The third of the continuous schematic.

The seventh figure is a stereoscopic appearance of a conventional linear slide.

The eighth drawing is a cross-sectional view taken along line A-A of the seventh drawing.

The ninth figure is a schematic diagram of the interference between the adjacent circulating components when the rolling elements keep the chain traveling in the conventional linear slide.

(1). . . Slide rigid body

(2). . . Slide rail

(3). . . Holding component

(4). . . End cap

(5). . . Rolling element retention chain

(6). . . Rolling body

(A). . . Circulation channel

(A1). . . Load channel

(A2). . . No load channel

(A3). . . Swing channel

(B). . . Guide groove

(B1). . . External retaining wall

(B11). . . First outer wall

(B12). . . Second outer wall

(B2). . . Inner retaining wall

(C). . . Joint surface

Claims (4)

A rolling body retaining chain guiding groove structure of a linear sliding rail, wherein a sliding body rigid body is disposed on a sliding rail, and the sliding body rigid body group is provided with a plurality of circulating components, whereby the circulating component is used in the sliding seat Providing a circulation channel between the rigid body and the slide rail, the circulation passage includes two linear passages and two rotary passages connected at two ends of the two linear passages, and the circulation component provides a guiding groove in the circulation passage for Guiding a rolling element retaining chain;
It is characterized by:
The circulation assembly provides an outer retaining wall and an inner retaining wall at a periphery of the guiding groove, and at least two of the adjacent assembled circulating components divide the outer retaining wall into a first outer retaining wall and a first a second outer retaining wall, the first outer retaining wall and the second outer retaining wall are connected to a joint surface;
If the two adjacent circulating components are connected to the rotating passage, the angle between the tangential direction of the tangent point of the joint between the second outer retaining wall and the joint surface and the joint surface is an acute angle; if the two adjacent circulating components The angle between the second outer retaining wall and the joint surface is an acute angle; the distance between the second outer retaining wall and the inner retaining wall is greater than the distance between the first outer retaining wall and the inner retaining wall . The rolling element holding chain guide groove structure of the linear slide according to claim 1, wherein the first outer retaining wall is provided with an arc-shaped guide angle toward the joint surface. The rolling element retaining chain guiding groove structure of the linear sliding rail according to claim 1, wherein the contact between the second outer retaining wall and the joint surface when the two adjacent circulating components are transferred to the rotating passage The angle between the tangential direction of the tangent point and the joint surface is between 10 degrees and 60 degrees; when the two adjacent circulation components are connected to the linear passage, the angle between the second outer retaining wall and the joint surface is between 10 degrees and 60 degrees. degree. The rolling element holding chain guiding groove structure of the linear sliding rail according to claim 1, wherein the circulation assembly comprises a holding assembly assembled in the sliding body and assembled at both ends of the sliding body. The end cover is provided with the linear passage and the first outer retaining wall, and the rotary passage and the second outer retaining wall are provided by the end cover.