Cross roller guide cycle channel structure

Abstract

To provide a cycle channel structure of a cross roller guide.SOLUTION: A cross roller guide includes a slider, a rail, two end caps, a plurality of cycle channels, and a number of rollers. The cycle channel includes a load section and a non-load section. Among these sections, the non-load section includes two return flow cycle groove units, and two butt-joined return flow cycle groove units. Mainly, each return flow unit component has an integrally-molded structure, and includes first and second side guide pipe parts, an insertion restriction part formed at the same end as the first and second side guide pipe parts, and first and second side return flow bridges. Each return flow groove unit includes first and second side return flow engagement grooves which are disposed to alternately cross each other, in which the first side return flow engagement groove provides for fitting of an arch section of the corresponding first side return bridge.SELECTED DRAWING: Figure 10

Description

Technical Field

[0001] The present invention relates to the field of guide rails, and particularly to a novel structure of the cycle channel of a cross roller guide.

Background Art

[0002] The known return direction conversion device of a cross roller guide is generally in a removable combination form in a single return flow section. Furthermore, the specific removal modes of the removable form are also different from each other. As an example, a component part of a straight path is provided in a removable combination form between two-direction inner and outer circumferential return flow channel parts or in a removable combination form of a return flow section.

Prior Art Documents

Patent Documents

[0003]

【Patent Document 》 U.S. Patent No. US7341378

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, all of the above-described return flow direction switching devices in a removable combination form have problems such as high manufacturing costs due to a large number of parts and time-consuming assembly. The combination location of the parts forms shoulders as shown in Patent Document 1 or other forms of positioning parts, which increases the mold cost to meet the accuracy requirements. On the other hand, when the parts form the above-described positioning part form, in order to meet the reasonable wall thickness installation requirements, the minimum return radius of the return flow at the formation location of the positioning part must be increased, which hinders the miniaturization design requirements of the rail guide product.

Means for Solving the Problems

[0005] The main objective of this invention is to provide a cycle channel structure for a cross roller guide. We aim to create and break through the challenges to be solved by developing a novel cross roller guide structure that is both ideal and practical.

[0006] Based on the aforementioned objectives, the technical features to be addressed by the present invention include a cross roller guide comprising a slider, a rail, two end caps, a plurality of cycle channels, and a number of rollers. The slider extends along an axis L1 and forms a guide groove for sliding the rail onto the slider, with both sides of the guide groove facing each other to form side seats, two end caps are assembled to the opposing ends of the slider, a plurality of cycle channels are provided at corresponding positions on the side seats and the two end cap structures, each cycle channel is connected to one another and includes a load section and an unload section of the roller cycle motion path, the load section is provided facing the guide groove, and the unload section includes two return flow cycle groove units and two return flow cycle groove unit components that are butt-connected. Each return flow unit component forms an integrally molded structure, the integrally molded structure includes a first side guide pipe section and a second side guide pipe section arranged in parallel, an insertion limiting section formed at the same end as the first side guide pipe section and the second side guide pipe section, and a first side return flow bridge and a second side return flow bridge in a protruding form connected to the same end as the first side guide pipe section and the second side guide pipe section, wherein the first side return flow bridge includes a connecting end and a pull-out end, and an arch section located between the connecting end and the pull-out end, the connecting end being connected to one end of the first side guide pipe, and the pull-out end being connected to one end corresponding to the load section, and the second side guide return flow bridge includes a connecting end, a feed-out end, and a curved protruding section located between the connecting end and the feed-out end, the connecting end being connected to one end of the second side guide pipe section, crossing the curved protruding section and penetrating the arch section of the first side return flow bridge, forming a through hole between the curved protruding section and the arch section, and the feed-out end being connected to the end corresponding to the load section.Each return flow groove unit is formed in an end cap structure, and the return flow groove units include a first-side return flow fitting groove and a second-side return flow fitting groove arranged to intersect each other, with the depth of the first-side return flow fitting groove being greater than that of the second-side return flow fitting groove, the first-side return flow fitting groove being prepared for fitting the arch section of the corresponding first-side return flow bridge, and after fitting the arch section, maintaining a predetermined distance between it and the first-side return flow fitting groove to define the first-side return flow corner, the second-side return flow fitting groove being prepared for fitting the curved protruding section of the corresponding second-side return bridge, and after fitting the curved protruding section, maintaining a predetermined distance between it and the second-side return flow groove to define the second-side return flow corner. Furthermore, at least one pressing surface is formed on the end cap to provide pressing against the insertion limiting portion of the corresponding return flow unit component, thereby accurately ensuring the insertion depth of the arch section of the first-side return flow bridge into the first-side return flow fitting groove. [Effects of the Invention]

[0007] The main effects and advantages of the present invention are that, due to the integrated structure of the return flow unit component, the assembly and fixing of each part is omitted, thereby achieving economic benefits such as simplification of assembled parts and reduction of manufacturing and logistics management costs. Furthermore, the integrated structure reduces the minimum return radius of the return flow section, which is advantageous to the trend of miniaturization in cross roller guides. In addition, the first return flow fitting groove provided on the end cap can be used for fitting the arch section of the first return flow bridge, and the second return flow fitting groove can be used for fitting the corresponding curved protruding section of the second return bridge. These technical features allow the return flow unit component to be fixed directly when fitted, and at the same time, by defining the space of the roller channel, the fixing structure is simplified, enabling high-speed and convenient assembly, while also possessing the advantages of a stable fixing form, practicality, and inventiveness. [Brief explanation of the drawing]

[0008] [Figure 1] This is a three-dimensional composite diagram of one preferred embodiment of the cross roller guide of the present invention. [Figure 2] This is a top view of one preferred embodiment of the cross roller guide of the present invention. [Figure 3] This is a cross-sectional view taken from line 3-3 in Figure 2 of the present invention. [Figure 4] This is a cross-sectional view taken from line 4-4 in Figure 2 of the present invention. [Figure 5] This is a cross-sectional view taken from line 5-5 in Figure 3 of the present invention. [Figure 6] This is a cross-sectional view taken from line 6-6 in Figure 3 of the present invention. [Figure 7] This is an enlarged view of part 7 in Figure 5 of the present invention. [Figure 8] This is an enlarged view of part 8 in Figure 6 of the present invention. [Figure 9] This is a three-dimensional exploded view of some parts of a preferred embodiment of the cross roller guide of the present invention. [Figure 10] This diagram shows the correspondence between the local components of the present invention in a disassembled state. [Figure 11] This diagram shows the correspondence between the return flow unit components of the present invention in their disassembled state. [Figure 12] This is an end view of one of the return flow unit components of the present invention. [Figure 13] This is a cross-sectional view taken from line 13-13 in Figure 12 of the present invention. [Figure 14] This is a diagram illustrating another embodiment of the local structure of the present invention. [Modes for carrying out the invention] [Examples]

[0009] Figures 1-13 refer to a preferred embodiment of the cycle channel structure of the cross roller guide of the present invention. However, these embodiments are for illustrative purposes only, and the claims of the present invention are not limited to these structures.

[0010] The cross roller guide of the present invention includes at least a slider 10, a rail 20, two end caps 30, a plurality of cycle channels B and a number of rollers 40. The slider 10 extends along an axis L1 and has a guide groove 11 formed in the slider 10 for sliding the rail 20. Two side seats 12 are formed on both sides of the guide groove 11, and two end caps 30 are assembled to the opposing ends of the slider 10. The plurality of cycle channels B are each provided in a structure of two side seats 12 and two end caps 30 in corresponding combination positions. The cycle channels B are connected to each other and form a load section B1 and an unloaded section B2 that form a cycle motion path of the roller column 40. The load section B1 is provided facing the guide groove 11, and the unloaded section B2 includes two cycle channel units 50 and two return flow unit parts 60 that abut and connect to each other. Among them, the return flow unit component 60 forms an integrated structure, and the integrated structure includes a first side guide pipe section 61 and a second side guide pipe section 62 arranged in parallel, an insertion limiting section 63 formed at the same end as the first side guide pipe section 61 and the second side guide pipe section 62, and a first side return flow bridge 64 and a second side return flow bridge 65 that are connected to the same end as the first side guide pipe section 61 and the second side guide pipe section 62 and have a protruding shape, the first side return flow bridge 64 includes a connecting end 641 and a pull-out end 642, and an arch section 643 located between the connecting end 641 and the pull-out end 642, the connecting end 641 is The first side guide return flow bridge 65 is connected to one end of the first side guide pipe 61, with a pull-out end 642 connected to one end corresponding to the load section B1. The second side guide return flow bridge 65 includes a coupling end 651, a feed-out end 652, and a curved projection section 653 located between the coupling end 651 and the feed-out end 652, the coupling end 651 being connected to one end of the second side guide pipe section 62, crossing the curved projection section 653 and passing through the arch section 643 of the first side return flow bridge 65, forming a through hole 66 between the curved projection section 653 and the arch section 643, and connecting the feed-out end 652 to the end corresponding to the load section B1.Each return flow groove unit 50 is formed in an end cap 30 structure, including a first-side return flow fitting groove 51 and a second-side return flow fitting groove 52 where the return flow groove units 50 are arranged to intersect with each other. The depth of the first-side return flow fitting groove 51 is provided deeper than that of the second-side return flow fitting groove 52. The first-side return flow fitting groove 51 is provided for the fitting of the arch section 643 of the corresponding first-side return flow bridge 64. After fitting the arch section 643, a predetermined interval is maintained between it and the first-side return flow fitting groove 51 to define the first-side return flow corner 671. The second-side return flow fitting groove 52 is provided for the fitting of the curved protruding section 653 of the corresponding second-side return flow bridge 65. After fitting the curved protruding section 653, a predetermined interval is maintained between it and the second-side return flow groove 52 to determine the second-side return flow corner 672. Further, at least one pressing surface 53 (shown in FIG. 10) is formed on the end cap 30 and provided for the pressing of the insertion limiting portion 63 of the corresponding return flow unit 53, so as to accurately ensure the insertion depth of the arch section 643 of the first-side return flow bridge 64 into the first-side return flow fitting groove 51.

[0011] Referring to FIG. 10, in this example, the insertion limiting portion 63 of the return flow unit component 60 is configured in a plate body form at the same end of the first-side guide pipe portion 61 and the second-side guide pipe portion 62, or as shown in FIG. 14, such an insertion limiting portion 63B can also be configured on the pipe end face at the same end of the first-side guide pipe portion 61 and the second-side guide pipe portion 62.

[0012] Referring to FIG. 8. In this example, the length (shown as L2 in FIG. 8) of the corresponding through hole 66 on the second-side return flow corner 672 side is equal to the width of the first-side return flow bridge 64 (arch section 643), and the through hole 66 is in the form of a straight hole wall.

[0013] Regarding the form of the components disclosed in this example, specifically, after fitting the arch section 643 of the first-side return flow bridge 64 into the first-side return flow fitting groove 51, the through hole 66 just directly forms the straight length space part of the second-side return flow corner 672, and when fitting the return flow unit component 60, it is fixed as it is and at the same time defines the channel space of the roller 40. That is, the problem of taking up space such as newly providing a fixture of the prior art is solved.

[0014] Refer to FIG. 12. In this example, between the first-side return flow fitting groove 51 and the second-side return flow fitting groove 52 and between the first-side return flow bridge 64 and the second-side return flow bridge 65, a 90-degree angle crossing arrangement relationship is formed.

[0015] Furthermore, the locking surface 53 forms a concave groove form (shown in FIG. 10), and the upper and lower profiles of each locking surface 53 and the insertion limiting part 63 corresponding to form a plate body form are in the same matching form.

[0016] In the embodiment disclosed in this example, by providing such a locking surface 53 in a concave groove form, a stable fixing effect in the side direction is realized. The effect of providing the upper and lower profiles of such an insertion limiting part 63 in the same matching form is that by forming different return flow unit components 60 with only one mold, the sharing of the mold can be realized and the manufacturing cost reduction effect can be achieved.

[0017] Refer to FIG. 11. In this example, at the mutual butting connection part of such two return flow unit components 60, a plurality of protruding blocks 68 and a concave edge part 69 for mutual fitting combination are formed.

[0018] In the embodiment disclosed in this example, the technical feature of interlocking the protruding block 68 and the recessed edge 69 with each other achieves a more stable and reliable butt joint connection between the two return flow unit components 60. This is because, during the production process of the return flow unit components 60, they are formed in a punched-out manner for die-cutting purposes, resulting in a relatively large gap between the insertion holes. Therefore, in this example, the technical feature of interlocking the protruding block 68 and the recessed edge 69 with each other maintains a stable and fixed state between the return flow unit components 60 and the insertion holes.

[0019] Based on the configuration and technical features of the structure described above, when the cross roller guide disclosed in the present invention is used in practice, each cycle channel B is interconnected to form a load section B1 and an unloaded section B2 of the cycle motion path, and further, a certain number of rollers 40 perform cycle rolling motion (see Figure 6, not Figure 3) in each cycle channel B, thereby providing smooth mutual motion between the rail 20 and the slider 10. The integrated structure of the cycle flow unit component 60 of the present invention includes a first side guide pipe section 61 and a second side guide pipe section 62 arranged in parallel, an insertion limiting section 63 formed at the same end as the first side guide pipe section 61 and the second side guide pipe section 62, and a first side return flow bridge 64 and a second side return bridge 65, among other structural features, as well as each cycle channel unit 50 provided with an end cap 30 structure, and a first side return flow fitting groove 51 and a second side return flow fitting groove 52 arranged intersecting each other. Of these, the first side return flow fitting groove 51 is provided for fitting combination of the arch section 643 of the corresponding first side return flow bridge 64. As shown in Figure 8, the first side return cycle corner 671 is defined by maintaining a distance (Note: precisely limited by locking the insertion limiting section 63 to the locking surface 53) between the arch section 643 and the first side return flow fitting groove 51 into which it is fitted.

[0020] Furthermore, the second return flow fitting groove 52 provides a fitting combination for the corresponding second return flow bridge 653, maintaining a distance between the second return flow fitting groove 52 and the curved protruding section 653 after it has been fitted, thereby defining the second return flow corner 672.

[0021] As described above, the present invention, through the technical feature of having an integrated structure for the return flow unit component 60, eliminates the need for assembly and fixing as in known return flow unit components, thereby achieving economic benefits such as simplification of assembly components and reduction of manufacturing and logistics management costs. Furthermore, in the present invention, the technical features such as providing the first return flow fitting groove 51 on the end cap 30 for fitting the arch section 643 of the corresponding first return flow bridge 64, and the second return flow fitting groove 52 for fitting the curved protruding section 653 of the corresponding second return bridge 65 (see Figures 7 and 8) allow the return flow unit component 60 to be fixed as is when fitted, while simultaneously defining the channel space of the roller 40, thereby simplifying the fixing structure, enabling faster and more convenient assembly, and combining the advantages of a stable fixing form. In addition, by further reducing the minimum return radius of the cycle section, it is more advantageous in terms of the miniaturization design trend of cross roller guides. [Explanation of symbols]

[0022] 10 Sliders 11 Guide grooves 12 Side seat 20 rails 30 End Caps B Cycle Channel B1 Load Section B2 Unloaded Section 40 rollers 50 Return Flow Channel Units 51 First side return flow fitting groove 52 Second side return flow fitting groove 53 Locking surface 60 Return Flow Unit Components 61 First side guide pipe section 62 Second side guide pipe section 63 Insertion restriction section 63B Insertion restriction section 64 First side return flow bridge 641 Connecting end 642 Drawer end 643 Arch Section 65 Second side return flow bridge 651 Joint end 652 End of extension 653 Curved protruding section 66 through holes 671 First side return flow corner 672 Second side return flow corner 68 Protruding Blocks 69 Recessed edge L1 axis

Claims

1. It includes a slider, rails, two end caps, multiple cycle channels, and several rollers. The slider extends along its axis and has a guide groove formed in the slider for sliding the rail into place, the slider has two side seats defined on both sides of the guide groove, the two end caps are assembled to opposite ends of the slider, the plurality of cycle channels are provided through the portions of the two end caps that are close to the side seats when the two end caps are assembled to opposite ends of the slider, and through the two side seats and the other portions of the two end caps, the cycle channels are interconnected and form a load section and an unload section of the cycle motion path of the roller, the load section is positioned in the direction of the extension of the guide groove, the unload section includes two cycle channel units and two return flow channel unit components that abut and connect to each other, the return flow channel unit components forming an integrally molded structure and having a first side guide pipe portion and a second side guide pipe portion arranged in parallel, and the first side The first return flow bridge includes an insertion limiting portion formed at the same end of the guide pipe portion and the second side guide pipe portion, and a protruding first side return flow bridge and a second side return flow bridge connected to the same end of the first side guide pipe portion and the second side guide pipe portion, wherein the first side return flow bridge includes a connecting end and a pull-out end, and an arch section located between the connecting end and the pull-out end, the connecting end being connected to one end of the first side guide pipe portion, and the pull-out end being connected to one end corresponding to the load section, and the second side return flow bridge includes a coupling end, a dispensing end, and a curved protruding section located between the coupling end and the dispensing end, the coupling end being connected to one end of the second side guide pipe portion, crossing the curved protruding section and penetrating the arch section of the first side return flow bridge, forming a through hole between the curved protruding section and the arch section, the dispensing end being connected to the end corresponding to the load section, and the return flow channel unit component is formed in the end cap.The return flow channel unit includes a first return flow fitting groove and a second return flow fitting groove arranged to intersect each other, wherein the depth of the first return flow fitting groove is greater than that of the second return flow fitting groove, the first return flow fitting groove is provided for fitting the arch section of the corresponding first return flow bridge, and after fitting the arch section, a predetermined distance is maintained between it and the first return flow fitting groove to define the first return flow corner, the second return flow fitting groove is provided for fitting the curved protruding section of the corresponding second return flow bridge, and after fitting the curved protruding section, a predetermined distance is maintained between it and the second return flow fitting groove to define the second return flow corner, and furthermore, at least one pressing surface is formed on the end cap and pressed against the insertion limiting portion of the corresponding return flow channel unit, thereby accurately ensuring the insertion depth of the arch section of the first return flow bridge into the first return flow fitting groove. Cycle channel structure of cross roller guide.

2. The cycle channel structure for a cross roller guide according to claim 1, characterized in that the insertion limiting portion of the return flow channel unit component is formed in the form of a plate at the same end of the first side guide pipe portion and the second side guide pipe portion.

3. The cycle channel structure for a cross roller guide according to claim 1, characterized in that the insertion limiting portion of the return flow channel unit component is composed of the first side guide pipe portion and the pipe end face at the same end as the second side guide pipe portion.

4. The cycle channel structure for a cross roller guide according to claim 1, 2, or 3, characterized in that the length of the through hole on the second return flow corner side is equal to the width of the first return flow bridge, and the through hole has the form of a straight hole wall.

5. The cycle channel structure for a cross roller guide according to claim 2, characterized in that a 90-degree intersecting positional relationship is formed between the first return flow fitting groove and the second return flow fitting groove and between the first return flow bridge and the second return flow bridge, a recessed groove shape is formed on the pressing surface, and the insertion limiting portion has a profile that matches the recessed groove shape on the pressing surface.

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