JP2022027543A - Cycle channel structure of cross roller guide - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cycle channel structure of a cross roller guide.
It includes sliders, rails, two end caps, a plurality of cycle channels, and a few rollers. The cycle channel includes a loaded section and an unloaded section. Among them, the non-load section includes two return flow cycle groove units and two butt-connected return flow cycle groove units. Mainly, each return flow unit part has an integrally molded structure, and the first and second side guide pipe parts, the insertion limiting part formed at the same end as the first and second side guide pipe parts, and the protruding form. 1st and 2nd side surface return flow bridges and the like. Each return flow groove unit includes first and second side return flow engagement grooves that are arranged alternately, with a first side return flow engagement groove for fitting the arch section of the corresponding first side return bridge. Be prepared.
[Selection diagram] FIG. 10

Description

The present invention relates to the field of guide rails, and particularly to novel structures of cycle channels of cross roller guides.

The return direction changer of a known cross roller guide is generally in a removable combination form in a single return flow section. Further, the specific removal mode of the removable form is also different. As an example, a part portion of the straight path is provided between the inner and outer peripheral return flow channel parts in two directions in a removable combination form or a return flow section is provided in a removable combination form.

U.S. Pat. No. US7341378

However, since all of the return flow direction switching devices in the removable combination mode described above have many parts, there are problems such as high manufacturing cost and long assembly time, and the combination of parts is patented. A rational wall when the shoulder portion is formed as shown in Document 1 or the shape of the positioning portion having another shape meets the accuracy requirement and the mold cost is high, while the component forms the above-mentioned positioning portion form. In order to meet the installation requirement of the thickness, the minimum return radius of the return flow must be increased at the forming portion of the positioning portion, which hinders the miniaturization design requirement of the rail guide product.

A main object of the present invention is to provide a cycle channel structure of a cross roller guide. We would like to create and break through the technical issues to be solved, aiming for a novel cross-roller guide structure that is more ideal and practical.

A technical feature to be solved by the present invention based on the above object is that the cross roller guide includes a slider, a rail, two end caps, a plurality of cycle channels, and a few rollers. The slider extends long along the axis L1 to form a guide groove for sliding the rail on the slider, and both sides of the guide groove face each other to form seats on both sides, and two end caps are formed respectively. Assembled to the opposite ends of the slider, multiple cycle channels are provided at the seats on both sides and the corresponding positions of the two end cap structures, and each cycle channel is connected to each other, and the load section and the non-load section of the roller cycle motion path are connected. A load section is provided towards the guide groove, including, and the non-load 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, and the integrally molded structure includes a first side guide pipe portion and a second side guide pipe portion, and a first side guide pipe portion and a second side guide arranged in parallel. An insertion restriction portion formed at the same end as the pipe portion, 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 portion and the second side guide pipe portion. A first-side return flow bridge comprises a connecting end and a pull-out end and an arch section located between the connecting and pull-out ends, the connecting end connecting to one end of the first-side guide pipe. The pull-out end connects to the end corresponding to the load section, and the second-side guide return flow bridge includes the join end, the payout end, and the curved overhang section located between the join ends and the payout ends. Is connected to one end of the second side guide pipe section, crosses the curved protrusion section and penetrates the arch section of the first side return flow bridge, forming a through hole between the curved protrusion section and the arch section. And connect the payout end to the load section and the corresponding end. A first-side return flow including a first-side return flow fitting groove and a second-side return flow fitting groove in which each return flow groove unit is formed in an end cap structure and the return flow groove units are arranged so as to intersect each other. The depth of the fitting groove is set deeper than the second side return flow fitting groove, and the arch section is fitted in preparation for the fitting of the arch section of the corresponding first side return flow bridge by the first side return flow fitting groove. After that, a predetermined distance is maintained between the first side return flow fitting groove and the first side return flow corner, and the second side return flow fitting groove is connected to the corresponding second side return bridge. In preparation for fitting the curved protrusion section of the above, after fitting the curved protrusion section, a predetermined distance is maintained between the curved protrusion section and the second side return flow groove to determine the second side return flow corner. In addition, the arch section of the first side return flow bridge is provided with the first side return flow by forming at least one pressing surface on the end cap to provide the pressing of the insertion limit of the corresponding return flow unit component. Accurately secure the insertion depth into the fitting groove.

The main effects and advantages of the present invention are the technical feature of the integrated structure of the return flow unit parts, which eliminates the need to combine and fix the parts, simplifying the combined parts, and reducing the manufacturing and distribution management costs. In addition to achieving this, the integrated structure further reduces the minimum return radius of the return flow section, favoring the trend of miniaturization of cross-roller guides. In addition, the first side return flow fitting groove provided in the end cap can be provided for fitting the arch section of the first side return flow bridge, and the second side return flow fitting groove corresponds to the corresponding second. Technical features such as preparing for the fitting of the curved protruding section of the side return bridge can be fixed as is when fitting the return flow unit parts, while at the same time defining the space of the roller channel simplifies the fixing structure. It is achieved, can be combined at high speed and conveniently, and has the advantages, practicality, and inventive step of the stable fixed form.

It is a combination three-dimensional view of one preferable embodiment of the cross roller guide of this invention. It is a top view of one preferable embodiment of the cross roller guide of this invention. It is sectional drawing taken from the 3-3 line of FIG. 2 of this invention. It is sectional drawing taken from the 4-4 line of FIG. 2 of this invention. It is sectional drawing taken from the 5-5 line of FIG. 3 of this invention. It is sectional drawing taken from line 6-6 of FIG. 3 of this invention. It is an enlarged view by the part 7 of FIG. 5 of this invention. It is an enlarged view by the part 8 of FIG. 6 of this invention. It is an exploded view of a part of a preferred embodiment of the cross roller guide of this invention. It is a correspondence diagram in the disassembled state by the local component of this invention. It is a correspondence diagram in the disassembled state by the return flow unit component of this invention. It is an end view of one of the return flow unit parts of this invention. It is sectional drawing taken from line 13-13 of FIG. 12 of this invention. It is another embodiment diagram of the local structure of the present invention.

1-13, a preferred embodiment of the cycle channel structure of the cross roller guide of the present invention. However, for the purposes of explanation of these examples, the claims of the present invention are not bound by these structures.

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 small number of rollers 40. Among them, the slider 10 extends long along the axis L1, forms a guide groove 11 for sliding the rail 20 on the slider 10, and faces the guide grooves 11 on both sides of the two side seat portions 12. The two end caps 30 are assembled to the opposite ends of the slider 10, and a plurality of cycle channels B are provided at the corresponding combination positions in the two side seat portions 12 and the two end cap 30 structures, respectively. The cycle channels B are connected to each other, and the load section B1 forming the cycle motion path of the roller column 40 and the non-load section B2 are provided so that the load section B1 faces the guide groove 11 and the non-load section B2 is provided. Includes two cycle channel units 50 and two return flow unit components 60 that are butted together and connected to each other. Among them, the return flow unit component 60 forms an integrated structure, and the first side guide pipe portion 61 and the second side guide pipe portion 62 and the first side guide pipe portion in which the integrated structure is arranged in parallel are formed. An insertion limiting portion 63 formed at the same end as the 61 and the second side guide pipe portion 62, and a first side return in a protruding form connected to the same end as the first side guide pipe portion 61 and the second side guide pipe portion 62. A first-side return flow bridge 64, including a flow bridge 64 and a second-side return flow bridge 65, with an arch section 643 located between the connecting end 641 and the pull-out end 642 and between the connecting end 641 and the pull-out end 642. A connecting end 641 is connected to one end of the first side guide pipe 61, a drawing end 642 is connected to one end corresponding to the load section B1, and a second side guide return flow bridge 65 is connected to the connecting end 651. A coupling end 651 is connected to one end of a second side guide pipe portion 62 and comprises a curved protrusion section 653, including a payout end 652 and a curved protrusion section 653 located between the coupling end 651 and the feeding end 652. Crossing through the arch section 643 of the first side return flow bridge 65, a through hole 66 is formed between the curved protrusion section 653 and the arch section 643, with the payout end 652 as the end corresponding to the load section B1. Connecting. Each return flow groove unit 50 is formed in an end cap 30 structure, and includes a first side return flow fitting groove 51 and a second side return flow fitting groove 52 in which the return flow groove unit 50 is arranged so as to intersect 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, and the arch section 643 of the first side return flow bridge 64 to which the first side return flow fitting groove 51 corresponds is provided. After fitting the arch section 643 in preparation for fitting, a predetermined distance is maintained between the arch section 643 and the first side return flow fitting groove 51 to define the first side return flow corner 671 and the second side. A return flow fitting groove 52 is provided for fitting the curved protruding section 653 of the corresponding second side return bridge 65, and after fitting the curved protruding section 653, a predetermined distance is provided between the return flow fitting groove 52 and the second side return flow groove 52. And set the second side return flow corner 672. Further, by forming at least one pressing surface 53 (shown in FIG. 10) on the end cap 30 and providing it to the pressing of the insertion limiting portion 63 of the corresponding return flow unit 53, the first side return flow bridge. The depth of insertion of the arch section 643 of 64 into the first side return flow fitting groove 51 is accurately secured.

In this example with reference to FIG. 10, the insertion limiting portion 63 of the return flow unit component 60 is configured by the first side guide pipe portion 61 and the plate body form at the same end as the second side guide pipe portion 62. Alternatively, as shown in FIG. 14, the insertion limiting portion 63B may be configured with a pipe end face having the same end as the first side guide pipe portion 61 and the second side guide pipe portion 62.

See FIG. In this example, the length of the through hole 66 corresponding to the second side return flow corner 672 side (shown in L2 of FIG. 8) is equal to the width of the first side return flow bridge 64 (arch section 643). Moreover, the through hole 66 is in the form of a straight hole wall.

A particular description of the form of the components disclosed in this example is that after the arch section 643 of the first side return flow bridge 64 is fitted into the first side return flow fitting groove 51, the through hole 66 is just The straight length space portion of the second side return flow corner 672 is directly formed in the second side, and is fixed as it is when the return flow unit component 60 is fitted, and at the same time, the channel space of the roller 40 is defined. That is, the problem of taking up a space such as newly providing a fixture of a known technique is solved.

See FIG. In this example, the distance 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 is 90 degrees. Form the arrangement relationship of the corner intersections.

Further, the locking surface 53 forms a recessed groove form (shown in FIG. 10), and the upper and lower profiles of each locking surface 53 and the above-mentioned corresponding insertion limiting portion 63 forming the plate body form are the same. It is a matching form.

In the embodiment disclosed in this example, the locking surface 53 is provided in the recessed groove form to realize a stable fixing effect in the side surface direction. The effect of providing the upper and lower profiles of the insertion limiting unit 63 in the same matching form is that by molding different return flow unit parts 60 with only one mold, the mold can be shared and the manufacturing cost can be reduced. Can be achieved.

See FIG. 11. In this example, a plurality of protrusion blocks 68 for mutual fitting and combination with the mutual butt connection portions of the two return flow unit parts 60, and a recessed edge portion 69 are formed.

In the embodiment disclosed in this example, the technical feature of fitting and combining the protrusion block 68 and the recessed edge portion 69 to each other makes the butt connection form of the two return flow unit parts 60 more stable and reliable. Achieve the effect. The background is that in the production process of the return flow unit component 60, it is formed in a punched shape in the process for the purpose of die cutting, so that a relatively large combination gap is formed between the insertion hole gates. Therefore, in this example, the stable fixing state is maintained between the return flow unit component 60 and the insertion hole due to the technical feature of the mutual fitting combination of the protrusion block 68 and the recessed edge portion 69.

When the cross roller guide disclosed in the present invention is used in practice based on the configuration mode and technical features of the above-mentioned structure, the cycle channels B are interconnected to form a load section B1 and a non-load section of the cycle motion path. Due to the structural form in which B2 is formed and the load section B1 is installed toward the guide groove 11, a small number of rollers 40 move in cycle rolling (see FIG. 6 without FIG. 3) in each cycle channel B. , The smoothness of the mutual motion between the rail 20 and the slider 10 is provided. The integrated structure of the cycle flow unit component 60 of the present invention includes a first side guide pipe portion 61, a second side guide pipe portion 62, a first side guide pipe portion 61, and a second side guide pipe arranged in parallel. Each cycle channel unit provided in the end cap 30 structure in the structural features such as the insertion limiting portion 63 formed at the same end as the portion 62, the first side return flow bridge 64 forming the external protrusion form, and the second side return bridge 65. 50, a first-side return flow fitting groove 51 arranged so as to intersect each other, and a structural morphological feature of the second-side return flow fitting groove 52 are included. Among them, the first side return flow fitting groove 51 is provided for the fitting combination of the arch section 643 of the corresponding first side return flow bridge 64. As shown in FIG. 8, the distance between the arch section 643 and the first-side return flow fitting groove 51 (Note: the insertion limiting portion 63 is accurately limited by locking the locking surface 53). By maintaining), the first side return cycle corner 671 is defined.

Further, the second side return flow fitting groove 52 provides the corresponding fitting combination of the second side return flow bridge 653 to fit the curved protrusion section 653 and then with the second side return flow fitting groove 52. The second side return flow corner 672 is determined while maintaining the distance in between.

As described above, the present invention has the technical feature that the return flow unit component 60 has an integrated structure, so that the installation of the combination fixing as in the return flow unit component of the known technology is omitted, and the combination component is simplified and manufactured. In addition to achieving the economic effect of reducing distribution management costs, in the present invention, the first-side return flow fitting groove 51 provided in the end cap 30 is fitted to the arch section 643 of the corresponding first-side return flow bridge 64. The technical features (see FIGS. 7 and 8) such as the fitting combination of the curved protruding section 653 of the second side return bridge 65 to which the second side return flow fitting groove 52 corresponds are provided as a return flow unit component. When the 60 is fitted, it can be fixed as it is, and at the same time, by defining the channel space of the roller 40, the fixing structure can be simplified, the assembly can be made faster and more convenient, and the advantages of the stable fixing form are also combined. In addition, by further reducing the minimum return radius of the cycle section, it is more advantageous for the miniaturization design trend of the cross roller guide.

10 Slider 11 Guide groove 12 Side seat 20 Rail 30 End cap B Cycle channel B1 Load section B2 Non-load section 40 Roller 50 Return flow channel Unit 51 1st side return flow fitting groove 52 2nd side return flow fitting groove 53 Locking surface 60 Return flow unit part 61 1st side guide pipe part 62 2nd side guide pipe part 63 Insertion limiting part 63B Insertion limiting part 64 1st side return flow bridge 641 Connecting end 642 Drawer end 643 Arch section 65 2nd side Return Flow Bridge 651 Coupling End 652 Feeding End 653 Curved Protruding Section 66 Through Hole 671 First Side Return Flow Corner 672 Second Side Return Flow Corner 68 Protruding Block 69 Recessed Edge L1 Axis Line

Claims (5)

Includes sliders, rails, two end caps, multiple cycle channels, and a few rollers,
The slider extends long along the axis to form a guide groove for sliding and combining the rail in the slider, two side seats are defined on both sides of the guide groove, and the two end caps are attached. The plurality of cycle channels are respectively assembled to the opposite ends of the slider, and the plurality of cycle channels are provided at the combination positions corresponding to the two side seats and the two end cap structures, and the cycle channels are connected to each other and of the roller. A load section and a non-load section of the cycle motion path are formed, the load section is installed in the direction of the guide groove, and the non-load section is connected to two return flow channel units and two return flows that are butt-connected to each other. Among the channel unit parts, the return flow unit parts form an integrally molded structure, and the first side guide pipe portion and the second side guide pipe portion arranged in parallel, and the first side guide pipe A first-side return flow in a protruding form connected to an insertion limiting portion formed at the same end as the portion and the second-side guide pipe portion and the same end as the first-side guide pipe portion and the second-side guide pipe portion. The connecting end, comprising a bridge and a second side return flow bridge, wherein the first side return flow bridge comprises a connecting end and a pulling end, and an arch section located between the connecting end and the pulling end. Is connected to one end of the first side guide pipe, the drawer end is connected to one end corresponding to the load section, and the second side guide return flow bridge is a coupling end, a payout end, and the coupling end. The connecting end is connected to one end of the second side guide pipe portion and intersects the curved protrusion section to cross the first side return flow bridge, including a curved protruding section located between the and the feeding end. A through hole is formed between the curved protrusion section and the arch section, the payout end is connected to the load section and the corresponding end, and the return flow groove unit is connected to the end cap. Depth of the first side return flow fitting groove including a first side return flow fitting groove and a second side return flow fitting groove formed in the structure and arranged so that the return flow groove units intersect each other. Is provided deeper than the second side return flow fitting groove, and the first side return flow fitting groove is in front of the corresponding first side return flow bridge. In preparation for the fitting of the arch section, after fitting the arch section, a predetermined distance is maintained between the arch section and the first side return flow fitting groove to define the first side return flow corner. A second side return flow fitting groove is provided for fitting the curved protrusion section of the corresponding second side return bridge, and after fitting the curved protrusion section, a predetermined position is provided between the second side return flow fitting groove and the second side return flow groove. The second side return flow corner is fixed, and at least one pressing surface is formed on the end cap to press the insertion limiting portion of the corresponding return flow unit. Provided is a cycle channel structure of a cross roller guide, characterized in that the arch section of the first side return flow bridge accurately secures the insertion depth into the first side return flow fitting groove. The cross roller according to claim 1, wherein the insertion limiting portion of the return flow unit component is configured by the first side guide pipe portion and a plate body shape having the same end as the second side guide pipe portion. Guide cycle channel structure. The cross roller according to claim 1, wherein the insertion limiting portion of the return flow unit component is composed of the first side guide pipe portion and a pipe end face having the same end as the second side guide pipe portion. Guide cycle channel structure. The length of the through hole corresponding to the second side return flow corner side is equal to the width of the first side return flow bridge, and the through hole is in the form of a straight hole wall. The cycle channel structure of the cross roller guide according to claim 1, 2 or 3. A 90 degree angle intersection between the first side return flow fitting groove and the second side return flow fitting groove and between the first side return flow bridge and the second side return flow bridge It is determined that the upper and lower profiles of the insertion restricting portions that form a positional relationship, form a recessed groove shape on the locking surface, and form a plate shape corresponding to the locking surface have the same matching shape. 2. The cycle channel structure of the cross roller guide according to claim 2.

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