TW202206717A - Circulation channel structure of cross-roller linear rail - Google Patents

Abstract

The present invention provides a circulation channel structure of cross-roller linear rail. The said cross-roller linear rail basically includes a sliding seat, a rail, two end covers, a plurality of circulation channels and a number of rollers. Each circulation channel includes a load section and a non-load section. The non-load section includes two recirculation tank units and two opposite recirculation unit assemblies. The main feature is that the components of the recirculation unit are integrally formed, including the first and second side duct parts, and the first and second side return bridges formed at the same end of the first and second side duct parts and are convex. Each recirculation tank unit includes first and second side recirculation embedding grooves that are alternately arranged with each other, and the first side recirculation embedding groove is used to embed the curved section of the corresponding first side return bridge.

Description

Circulation channel structure of cross roller linear guide

The present invention relates to a line rail, in particular to the disclosure of an innovative structure type of a circulation channel of a cross-roller line rail.

In the conventional cross-roller type return steering device, for a single return section, it is usually set to a combined detachable type, and the specific disassembly of the detachable type is slightly different. Different, for example, the component part of the straight channel and the inner and outer return channel components in both directions are set to a combined detachable type, or the return section is set to a combined detachable type.

However, the above-mentioned combined and detachable backflow diverting devices all have the problems of many components, high manufacturing cost, time-consuming and inconvenient assembly, and shoulders must be formed where the components are combined (for example, US Pat. No. 7,341,378). (disclosed in the previous case) or other shapes of the positioning portion, the requirements for matching accuracy are increased, resulting in an increase in the cost of mold opening, and where the component is formed with a positioning portion, the minimum radius of gyration in the reflow section must be relatively increased. In order to meet the reasonable wall thickness requirements of the above-mentioned positioning part type, it will relatively affect the miniaturization design requirements of line rail products.

Therefore, in view of the problems existing in the circulation channel structure of the conventional cross-roller linear guide, how to develop an innovative structure that can be more ideal and practical requires further consideration by the relevant industry for breakthrough goals and directions; In view of this, the inventor has been engaged in the manufacturing, development and design of related products for many years, aiming at the above-mentioned goals, after detailed design and careful evaluation, finally came up with a practical invention.

The main purpose of the present invention is to provide a circulation channel structure of a cross-roller linear rail, and the technical problem to be solved is aimed at how to develop a new type of cross-roller linear rail structure that is more ideal and practical. Think about innovative breakthroughs.

Based on the aforementioned purpose, the technical feature of the present invention to solve the problem is that the cross-roller linear guide basically includes a sliding seat, a track, two end covers, a plurality of circulating channels and a plurality of rollers; the sliding seat is elongated along an axis. Extending, the sliding seat is formed with a guide groove for the rail to slide and fit, the two sides of the guide groove are oppositely defined to form two side seats, the two end covers are respectively assembled on the opposite ends of the sliding seat, and the plurality of circulation channels are respectively arranged on the two sides. At the corresponding matching positions in the structure of the side seat and the two end caps, each circulation channel includes a load section and a non-load section that are connected to each other to form a roller circulatory movement path. The load section is arranged toward the guide groove, and the non-load section The section includes two recirculation tank units and two recirculation unit assemblies that are butted together. Each recirculation unit assembly is integrally formed, and the integral formation includes: a first side conduit portion and a second side conduit portion arranged in parallel, an insertion limiting portion formed at the same end of the first side conduit portion and the second side conduit portion, a first side backflow bridge connected to the same end of the first side conduit portion and the second side conduit portion in a convex shape, and The second side return bridge, the first side return bridge has a connecting end, a lead-out end and a curved segment between the connecting end and the lead-out end, the connecting end is connected to one end of the first side conduit portion, and the lead-out end Then it is connected with one end corresponding to the load section; the second side return bridge has a connecting end, a sending end and a curved convex section between the connecting end and the sending end, and the connecting end is connected to the second side conduit At one end of the curved convex surface section, the curved convex surface section passes through the curved arch section of the first side return bridge in a staggered manner, and a flow passage is formed between the curved convex surface section and the curved arch section, and the delivery end is connected to the load area Corresponding ends of the segments are connected; each recirculation tank unit is formed on the end cap structure, and each recirculation tank unit includes a first side recirculation embedding groove and a second side recirculation embedding groove in a staggered relationship with each other. The depth of the insert groove is greater than that of the second side return insert groove. The first side return insert groove is used for inserting and matching the curved segment of the corresponding first side return bridge, and the curved segment is inserted into the first side backflow insert after inserting. There is still a distance between the grooves, so as to define and form a first side return curve; the second side return groove is for inserting and fitting the curved convex surface segment of the corresponding second side return bridge, and the curved convex surface segment is embedded with the curved convex surface. There is still a distance between the second side reflow insert grooves, thereby defining and forming a second side reflow curve; and the end cover is formed with at least one abutting surface for the insertion limit portion of the corresponding reflow unit component to abut , the depth of inserting the curved section of the first side return bridge into the first side return groove is accurately limited.

The main effects and advantages of the present invention are that, by virtue of the technical feature of the integral molding structure of the reflow unit assembly, the arrangement of the combined positioning pattern of each part can be omitted, so as to simplify the assembly of components, reduce manufacturing and warehouse management It has better industrial economic benefits in terms of cost, and its one-piece structure can further reduce the minimum turning radius of the return section, which is more conducive to the development trend of miniaturized design of cross-roller linear rails; The side return insert groove is for inserting and fitting the curved section of the corresponding first side return bridge, and the second side return insert groove is for inserting and fitting the corresponding curved convex section of the second side return bridge, etc. The positioning can be directly obtained when inserting, and at the same time, the roller channel space is relatively defined and formed, thereby achieving the advantages of simplified positioning structure, quick and convenient assembly, and stable positioning state and practical progress.

Please refer to FIG. 1 to FIG. 13 , which are preferred embodiments of the circulation channel structure of the cross-roller linear guide of the present invention, but these embodiments are for illustration only, and are not limited by this structure in the patent application .

The cross-roller linear guide basically includes a sliding seat 10, a rail 20, two end caps 30, a plurality of circulating channels B and a plurality of rollers 40; The seat 10 is formed with a guide groove 11 for the rail 20 to be slidably installed and matched. The two sides of the guide groove 11 are oppositely defined to form two side seats 12 , and the two end covers 30 are respectively assembled on the opposite ends of the sliding seat 10 . , the plurality of circulation channels B are respectively arranged at the corresponding matching positions in the structure of the two side seats 12 and the two end caps 30 , and each of the circulation channels B includes a load section B1 connected to each other to form a roller circulation motion path and a non-load section B2, the load section B1 is disposed toward the guide groove 11, and the non-load section B2 includes two return flow groove units 50 and two return flow unit components 60 that are combined with each other, and wherein each of the The backflow unit assembly 60 is an integral molding structure, and its integral formation includes: a first side duct portion 61 and a second side duct portion 62 arranged in parallel, and a first side duct portion 61 and the second side duct formed on the first side duct portion 61 and the second side duct. The insertion limiting portion 63 at the same end of the portion 62, a first side return bridge 64 and a second side return bridge connected to the same end of the first side conduit portion 61 and the second side conduit portion 62 in a convex shape 65, wherein the first side return bridge 64 has a connecting end 641, a leading end 642, and a curved segment 643 between the connecting end 641 and the leading end 642, and the connecting end 641 is connected to the One end of the first side conduit portion 61, and the lead-out end 642 is connected to the corresponding end of the load section B1; the second side return bridge 65 has a connecting end 651, a sending end 652 and an end between the connecting end A curved convex section 653 between 651 and the sending end 652, the joint end 651 is connected to one end of the second side conduit portion 62, and the curved convex section 653 crosses the first side return bridge 64 in a staggered shape. The curved segment 643 is opposite to the curved convex segment 653 and the curved segment 643 defines a through-flow channel 66, and the sending end 652 is connected to the corresponding end of the load segment B1; Each of the reflow tank units 50 is formed on the structure of the end cap 30 , and each of the reflow tank units 50 includes a first side reflow insert groove 51 and a second side reflow insert groove 52 in a staggered relationship with each other. The depth of the backflow insert groove 51 is greater than that of the second side backflow insert groove 52 . The first side backflow insert groove 51 is fitted with the corresponding curved segment 643 of the first side backflow bridge 64 , and the curved arch is made to fit. After being embedded, the segment 643 still retains a distance from the first side reflow insert groove 51, thereby defining and forming a first side return channel 671; The curved convex surface section 653 of the second side reflow bridge 65 is inserted and fitted, and there is still a distance between the curved convex surface section 653 and the second side reflow socket 52 after being inserted, so as to define a second side reflow bend Road 672; and wherein, the end cover 30 is formed with at least one abutting surface 53 (As shown in FIG. 10 ), the abutting surface 53 is for the corresponding insertion limiting portion 63 of the return unit assembly 60 to abut against, so that the curved section 643 of the first side return bridge 64 is embedded The depth of the first side reflow socket 51 is accurately limited.

As shown in FIG. 10 , in this example, the insertion limiting portion 63 of the return unit assembly 60 is a plate shape formed at the same end of the first side conduit portion 61 and the second side conduit portion 62 . Alternatively, as shown in FIG. 14 , the insertion limiting portion 63B can also be formed by a pipe end surface formed at the same end of the first side conduit portion 61 and the second side conduit portion 62 .

As shown in FIG. 8 , in this example, the through-flow channel 66 corresponds to the length of the side of the second side return bend 672 (as shown by L2 in FIG. 8 ), which is equal to the length of the first side return bridge 64 (curve The width of the section 643), and the through-flow channel 66 is in the form of a straight hole wall. The point to be explained in the form of the structure disclosed in this example is that after the curved section 643 of the first side return bridge 64 is inserted into the first side return groove 51 , the through-flow channel 66 can just directly form the second side return flow The straight length space of the curved channel 672 enables the recirculation unit components to be directly positioned during insertion and at the same time to relatively define and form the roller channel space, that is to say, there is no need to provide positioning members as in the prior art and there is a space-occupying space. question.

As shown in FIG. 12 , in this example, between the first side recirculation insert groove 51 and the second side reflow insert groove 52 , and between the first side return bridge 64 and the second side return bridge 65 , A staggered configuration at a 90-degree angle.

Furthermore, each of the abutting surfaces 53 is set as a groove shape (as shown in FIG. 10 ), and the upper and The lower side profile is set to be the same. In the embodiment disclosed in this example, the abutting surface 53 is set as the technical feature of the groove type, and its effect is to achieve the effect of stable lateral positioning; and the upper and lower side contours of the insertion limiting portion 63 Setting the same and consistent functions is beneficial for different reflow unit components 60 to have only one mold for manufacturing, thus achieving the advantages of sharing molds and effectively saving manufacturing costs.

As shown in FIG. 11 , in this example, a plurality of protruding blocks 68 and concave edges 69 are formed at the joints of the two reflow unit components 60 , which are mutually butted together. The embodiment disclosed in this example is mainly through the technical feature of the relative inserting and fitting of the protruding block 68 and the concave edge 69, so that the mutual butt joint state of the two return flow unit components 60 can achieve the advantages and effects of more stable and reliable positioning; Because the reflow unit component 60 is usually made into a push-pull shape based on the requirement of drafting in the manufacturing process, there will be a large matching gap between the reflow unit component 60 and the socket. Therefore, in this example, the bump 68 and the concave edge 69 are used. The technical features of the relative insert fit can maintain a stable positioning state between the return flow unit assembly 60 and the socket.

With the above-mentioned structural composition and technical characteristics, the cross-roller linear guide disclosed in the present invention is actually used, and each of the circulating passages B includes a load section B1 and a non-load section B2 that are connected to each other to form a circulating motion path. , and the load section B1 is arranged toward the guide groove 11 and other structural types, and a plurality of rollers 40 can be cyclically rolled in each of the circulation channels B (refer to FIG. 3 to FIG. 6 ) to provide the track 20 and the sliding The smoothness of the relative movement between the seats 10; the present invention uses each of the return unit components 60 in an integral molding structure, including a first side duct portion 61 and a second side duct portion 62 arranged in parallel, formed in the first side duct portion 62 61 and the second side conduit portion 62 are inserted at the same end with a limiting portion 63 and a first side return bridge 64 and a second side return bridge 65 in a convex shape and other structural features, and then matched with the end cap 30. Each of the reflow groove units 50 includes the structural features of a first side reflow insert groove 51 and a second side reflow insert groove 52 staggered with each other, wherein the first side reflow insert groove 51 supplies the corresponding first side reflow groove The arched section 643 of the bridge 64 is inserted and fitted, as shown in FIG. 8 , and a distance is left between the curved arched section 643 and the first side return groove 51 after being embedded (Note: using the insertion limiter 63 Abutting against the abutting surface 53 to obtain an accurate restriction) to define and form the first side return curve 671; and the second side return groove 52 is used for the corresponding curved convex section 653 of the second side return bridge 65 to insert and fit, And a distance is left between the curved convex segment 653 and the second side reflow insert groove 52 after embedding to define and form the second side reflow bend 672 . It can be seen that the present invention can omit the arrangement of the combined positioning type of each part of the return flow unit assembly in the prior art by virtue of the feature that each of the return flow unit components 60 is provided as an integral molding structure, so as to simplify the assembly of components, reduce manufacturing and storage. Better industrial economic benefits of management costs; in addition, the present invention utilizes the first side return insert groove 51 provided in the end cover 30 to provide the corresponding first side return bridge 64 of the curved segment 643 for insert fit, and the second side return insert groove The groove 52 is provided with related technical features such as the curved convex section 653 of the corresponding second side return bridge 65 for inserting and fitting (refer to FIG. 7 and FIG. 8 ), so that the return unit component 60 can be directly positioned during inserting, and at the same time The roller channel space is relatively defined, thereby simplifying the positioning structure, making the assembly faster and more convenient, and having the advantages of a stable positioning state, and the integrated structure of each return flow unit assembly 60 of the present invention can further reduce the return flow The minimum turning radius of the section is more conducive to the development trend of miniaturized design of the cross-roller linear guide.

10: Slider 11: guide groove 12: Side seat 20: Orbit 30: End cap B: Circulation channel B1: Load section B2: Non-load section 40: Roller 50: Reflow tank unit 51: The first side reflow slot 52: The second side reflow slot 53: Abutment surface 60: Reflow Unit Assembly 61: First side conduit part 62: Second side conduit part 63: Insert the limit part 63B: Insert the limit part 64: The first side return bridge 641: Connection end 642: Export side 643: Curved Arch Section 65: Second side return bridge 651: binding end 652: Sending end 653: Curved Convex Segment 66: Through-flow channel 671: 1st side return bend 672: Second side return bend 68: bump 69: concave edge L1: axis

FIG. 1 is a combined perspective view of a preferred embodiment of the cross-roller linear guide of the present invention. FIG. 2 is a top view of a preferred embodiment of the cross-roller linear guide of the present invention. FIG. 3 is a cross-sectional view taken along line 3-3 of FIG. 2 . FIG. 4 is a sectional view of 4-4 of FIG. 2 . FIG. 5 is a cross-sectional view of 5-5 of FIG. 3 . FIG. 6 is a sectional view of 6-6 of FIG. 3 . FIG. 7 is an enlarged view of part 7 of FIG. 5 . FIG. 8 is an enlarged view of part 8 of FIG. 6 . 9 is an exploded perspective view of a part of the components of the preferred embodiment of the cross-roller linear guide of the present invention. FIG. 10 is a schematic diagram of the corresponding relationship between the disassembled states of the partial components of the present invention. FIG. 11 is a perspective view of the disassembled corresponding relationship of the components of the return flow unit of the present invention. Fig. 12 is a side view of the backflow unit assembly of the present invention. FIG. 13 is a sectional view of 13-13 of FIG. 12 . FIG. 14 is a diagram of another embodiment of the partial structure of the present invention.

30: End cap

50: Reflow tank unit

51: The first side reflow slot

52: The second side reflow slot

53: Abutment surface

60: Reflow Unit Assembly

61: First side conduit part

62: Second side conduit part

63: Insert the limit part

64: The first side return bridge

641: Connection end

643: Curved Arch Section

65: Second side return bridge

651: binding end

653: Curved Convex Segment

66: Through-flow channel

Claims (5)

A circulating channel structure of a cross-roller line rail, the cross-roller line rail basically includes a sliding seat, a track, two end caps, a plurality of circulating channels and a plurality of rollers; wherein the sliding seat is elongated along an axis Extending, the sliding seat is formed with a guide groove for the rail to be slidably fitted, the two sides of the guide groove are oppositely defined to form two side seat portions, the two end covers are respectively assembled on the opposite ends of the sliding seat, the plurality of The circulation channels are respectively arranged at the corresponding matching positions in the two side seat parts and the two end cap structures. Each of the circulation channels includes a load section and a non-load section which are connected to each other to form a roller circulation movement path. The load section is disposed toward the guide groove, and the non-load section includes two recirculation tank units and two recirculation unit assemblies that are butted and combined with each other, and each of the recirculation unit components is an integral molding structure, and the one-piece Forming includes: a first side conduit portion and a second side conduit portion arranged in parallel, an insertion limit portion formed at the same end of the first side conduit portion and the second side conduit portion, and connected to the first side conduit portion A first side return bridge and a second side return bridge in a convex shape at the same end as the second side conduit portion, wherein the first side return bridge has a connection end, a lead-out end and a connection between the connection end and the second side return bridge. A curved section between the lead-out ends, the connecting end is connected to one end of the first side conduit portion, and the lead-out end is connected to an end corresponding to the load section; the second side return bridge has A connecting end, a sending end, and a curved convex surface section between the connecting end and the sending end, the connecting end is connected to one end of the second side conduit portion, and the curved convex surface section passes through the staggered shape The curved section of the first side return bridge defines a through-flow channel between the curved convex section and the curved section, and the delivery end is connected to an end corresponding to the load section; Each of the reflow tank units is formed on the end cap structure, and each of the reflow tank units includes a first side reflow insert groove and a second side reflow insert groove in a staggered relationship with each other. The depth of the first side reflow insert groove is larger than the second side return insert groove, the first side return insert groove is used for inserting and fitting the curved segment of the corresponding first side return bridge, and the curved segment is inserted into the first side There is still a distance between the reflow insert grooves, so as to define and form a first side return curve; in addition, the second side return insert groove is provided for the corresponding curved convex section of the second side return bridge to be inserted and fitted, and After embedding, the curved convex surface section still retains a distance between the second side reflow insert groove, so as to define and form a second side reflow bend; and wherein, the end cap is formed with at least one abutting surface, the at least An abutting surface is used for abutting against the insertion limiting portion of the corresponding recirculation unit component, so that the depth of the curved section of the first side recirculation bridge embedded in the first side recirculation insert groove can be accurately limited. The circulation channel structure of the cross-roller wire rail according to claim 1, wherein the insertion limiting portion of the return unit assembly is formed at the same end of the first side conduit portion and the second side conduit portion It is composed of a plate body type. The circulation channel structure of the cross-roller wire rail according to claim 1, wherein the insertion limiting portion of the return unit assembly is formed at the same end of the first side conduit portion and the second side conduit portion The end face of the tube is formed. The circulation channel structure of the cross-roller rail described in 2 or 3, wherein the through-flow channel corresponds to the length of the side of the second side return curve, which is equal to the width of the first-side return bridge, and the through-flow channel For the straight hole wall type. The circulation channel structure of the cross-roller linear rail as claimed in claim 2, wherein between the first side recirculation insert groove and the second side return insert groove, and the first side return bridge and the second side return bridge There is a 90-degree staggered arrangement relationship between them; and each of the abutting surfaces is set as a groove shape, and each of the abutting surfaces and each of the insertion limiting portions corresponding to the plate shape are formed. The upper and lower side contours are set to be the same.

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