TWI735301B - 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 rail

The present invention relates to a linear rail, in particular to a revealer of the innovative structure of the circulation channel of the cross-roller linear rail.

The conventional cross-roller linear rail recirculation steering device is usually set in a combined and detachable type for a single recirculation section, but the specific disassembly appearance of the detachable type is slightly different The difference is, for example, the component part of the straight channel and the two directions of the inner and outer return channel components are set to a combined detachable type, or the return section is set to a combined detachable type.

However, the comprehensive view of the above-mentioned combined detachable type of return steering device has the problems of many components, high manufacturing cost, time-consuming and inconvenient assembly, and a shoulder must be formed where the components are combined (for example, US7341378, the US patent For the positioning part type disclosed in the previous case) or other shapes, the matching accuracy requirements increase, resulting in increased mold opening costs, and the positioning part type of the component is formed, which will cause the minimum radius of gyration of the recirculation section to be relatively enlarged. In order to meet the requirement of reasonable wall thickness setting of the aforementioned positioning part type, it also affects the miniaturization design requirements of linear rail products.

Therefore, in view of the above-mentioned problems in the circulation channel structure of the conventional cross-roller linear rail, how to develop an innovative structure that can be more ideal and practical is really awaiting the relevant industry to think about the goal and direction of breakthrough; 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 objectives, after detailed design and careful evaluation, he finally obtained a practical invention.

The main purpose of the present invention is to provide a circulation channel structure for cross-roller linear rails. The technical problem to be solved is to develop a new cross-roller linear rail structure with more ideal practicality. Thinking about innovation and breakthrough.

Based on the foregoing objectives, the technical feature of the present invention to solve the problem is mainly that the cross-roller linear rail basically includes a sliding seat, a rail, two end covers, a plurality of circulation channels and a number of rollers; the sliding seat is elongated along an axis Extending, the sliding seat is formed with a guide groove for the sliding of the rails. The two sides of the guide groove are defined to form two side seat parts. At the corresponding matching positions in the side seat and the two end cover structures, each circulation channel includes a load section and a non-load section that are connected to each other to form a roller circulation path. The load section is set toward the guide groove, and the non-load The section includes two recirculation tank units and two recirculation unit components that are combined with each other. Each recirculation unit component is an integral structure, and its integral formation includes: a first side duct part and a second side duct part arranged in parallel, A first side return bridge formed at the same end of the first side duct part and the same end of the second side duct part, connected to the same end of the first side duct part and the second side duct part in a convex shape, and The second side return bridge, the first side return bridge has a connecting end, a leading-out end, and a curved section between the connecting end and the leading-out end. The connecting end is connected to one end of the first side duct, and the leading-out end The end corresponding to the load section is connected; the second side return bridge has a coupling end, a sending end, and a curved convex section between the coupling end and the sending end, and the coupling end is connected to the second side conduit At one end of the section, the curved convex section crosses the curved arch section of the first side return bridge in a staggered shape, and defines a flow channel between the curved convex section and the curved arch section, and the sending end is connected to the load zone. The corresponding one end of the segment is connected; each return groove unit is formed on the end cover structure, and each return groove unit includes a first side return groove and a second side return groove in a staggered arrangement relationship with each other, the first side return The depth of the embedding groove is greater than that of the second side return embedding groove, the first side return embedding groove is used for the corresponding curved arch section of the first side return bridge to be embedded and matched, and the curved arch section is embedded with the first side return embedding after being embedded. There is still a gap between the grooves to define a first side return curve; the second side return groove is used for the corresponding curved convex section of the second side return bridge to be inserted and matched, and the curved convex section is inserted into the There is still a gap between the second side return grooves to define a second side return curve; and the end cover is formed with at least one abutting surface for the insertion limit portion of the corresponding return unit assembly to abut , So that the depth of the arc section of the first side return bridge embedded in the first side return groove is accurately limited.

The main effect and advantage of the present invention is that the reflow unit assembly is the technical feature of an integrated structure, and the setting of the combination positioning type of each part can be omitted, so as to simplify the assembly of components, reduce manufacturing and storage management. The cost is better and the economic efficiency of the industry is better, and its integrated structure can further reduce the minimum radius of gyration of the return section, which is more conducive to the development trend of miniaturization of the cross-roller linear rail; in addition, the first The side return grooves are used for the corresponding first-side return bridge's curved section to be embedded and matched, and the second side return grooves are used for the corresponding second-side return bridge’s curved convex section and other related technical features, so that the return unit assembly The positioning can be directly obtained when inserting and inserting, and at the same time, the roller channel space is relatively defined, thereby achieving the simplified positioning structure, quick and convenient assembly, and the advantages of a stable fixed position and practical progress.

Please refer to Figures 1 to 13, which are preferred embodiments of the circulation channel structure of the cross-roller linear rail of the present invention. However, these embodiments are for illustrative purposes only and are not limited by this structure in the patent application. .

The cross-roller linear rail basically includes a sliding seat 10, a rail 20, two end covers 30, a plurality of circulation channels B and a plurality of rollers 40; wherein the sliding seat 10 extends along an axis L1 elongated, the sliding The seat 10 is formed with a guiding groove 11 for sliding and fitting of the rail 20, two sides of the guiding groove 11 are defined to form two side seat portions 12, and the two end covers 30 are respectively assembled on two opposite ends of the sliding seat 10 , The plurality of circulation channels B are separately arranged at the corresponding matching positions in the two side seat portions 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 path. And a non-load section B2, the load section B1 is set toward the guide groove 11, the non-load section B2 includes two return trough units 50 and two return unit assemblies 60 butted and combined with each other, and wherein, each of the The recirculation unit assembly 60 is an integrally formed structure, and its integral formation includes: a first side pipe portion 61 and a second side pipe portion 62 arranged in parallel, formed on the first side pipe portion 61 and the second side pipe portion The insertion limit 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 pipe portion 61 and the second side pipe portion 62 in a convex shape 65. The first side return bridge 64 has a connecting end 641, a leading-out end 642, and a curved section 643 between the connecting end 641 and the leading-out end 642, and the connecting end 641 is connected to the One end of the first side duct portion 61, the leading end 642 is connected to an end corresponding to the load section B1; the second side return bridge 65 has a joining end 651, a sending end 652 and between the joining 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 duct portion 62, and the curved convex section 653 crosses the first side return bridge 64 in a staggered shape The curved section 643 defines a flow channel 66 between the curved convex section 653 and the curved section 643, and the sending end 652 is connected to an end corresponding to the load section B1; Each of the recirculation tank units 50 is formed on the structure of the end cover 30, and each of the recirculation tank units 50 includes a first side recirculation groove 51 and a second side recirculation groove 52 in a staggered arrangement relationship with each other. The depth of the return groove 51 is greater than that of the second side return groove 52, and the first side return groove 51 is used for the corresponding curved section 643 of the first side return bridge 64 to be inserted and matched, and the curved arch After the segment 643 is inserted, there is still a distance between the first side return groove 51 and the first side return groove 51 to define a first side return curve 671; in addition, the second side return groove 52 is provided for the corresponding The curved convex surface section 653 of the second side return bridge 65 is inserted and fitted, and a distance remains between the curved convex surface section 653 and the second side return groove 52 after being embedded, thereby defining a second side return curve Road 672; and wherein, the end cap 30 is formed with at least one abutting surface 53 (As shown in FIG. 10), the abutting surface 53 is for the insertion limit portion 63 of the corresponding return unit assembly 60 to abut, so that the curved section 643 of the first side return bridge 64 is embedded The depth of the first side return groove 51 is accurately limited.

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

As shown in FIG. 8, in this example, the flow passage 66 corresponds to the length of the side of the second side return curve 672 (shown as L2 in FIG. 8), which is equal to the first side return bridge 64 (curved arch). The width of the section 643), and the flow channel 66 is a straight hole wall shape. One point to be explained in the component type 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 flow passage 66 can directly form the second side return channel. The straight length space of the curve 672 enables the return unit assembly to be directly positioned during the insertion and at the same time relatively defines the roller channel space, that is to say, there is no need to provide a positioning member as in the conventional technology and there is a space occupied problem.

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

Each of the abutting surfaces 53 is set in a groove shape (as shown in FIG. 10), and each of the abutting surfaces 53 and the upper and The lower 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 lateral stabilization and fixation; and the upper and lower side contours of the insertion limit portion 63 Setting the same and consistent effect is beneficial for different reflow unit components 60 to be manufactured and molded by only one mold. In this way, the advantages of mold sharing and effective manufacturing cost saving can be achieved.

As shown in FIG. 11, in this example, a plurality of protruding blocks 68 and concave edges 69 that are relatively inserted and fitted are formed at the mating and combined part of the two return unit assemblies 60. The implementation type disclosed in this example mainly uses the technical features of the relative inserting and fitting of the convex block 68 and the concave edge 69, so that the mutual docking state of the two return unit assemblies 60 can achieve the advantages and effects of a more stable and reliable positioning; Because the reflow unit assembly 60 is usually made into a push-pull shape based on the drawing requirements during the manufacturing process, there will be a large matching gap with the socket. Therefore, in this example, the convex block 68 and the concave edge 69 are used. Relative to the technical features of inserting and fitting, the return unit assembly 60 and the socket can be kept in a stable fixed position.

With the above-mentioned structural composition and technical characteristics, the cross-roller linear rail disclosed in the present invention is actually used, through each of the circulation channels B, including a load section B1 and a non-load section B2 that are connected to each other to form a cyclic motion path. , And the load section B1 is arranged toward the guide groove 11 and other structural types, a number of rollers 40 can be rolled in each of the circulation channels B (refer to Figure 3 to Figure 6), to provide the track 20 and sliding The smoothness of the relative movement between the seats 10; the present invention uses the integral structure of each reflux unit assembly 60, which includes a first side pipe portion 61 and a second side pipe portion 62 arranged in parallel, formed on the first side pipe portion 61. One end of the same end of the second side duct portion 62 is inserted with a limiting portion 63, and the first side return bridge 64 and the second side return bridge 65 that are in a convex shape are structured with the end cap 30. Each recirculation slot unit 50 is provided with a first side recirculation slot 51 and a second side recirculation slot 52 that are alternately arranged with each other. The first side recirculation slot 51 is provided for the corresponding first side recirculation. The curved arch section 643 of the bridge 64 is embedded and fitted, as shown in FIG. 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 provided for the corresponding curved convex surface section 653 of the second side return bridge 65 to be inserted and fitted, In addition, a space is reserved between the curved convex surface section 653 and the second side return groove 52 after being inserted to define a second side return curve 672. It can be seen from this that, by setting each reflow unit assembly 60 as an integral structure in the present invention, it is possible to omit the arrangement of the combination positioning type of each part of the reflow unit assembly in the prior art, 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 groove 51 provided in the end cover 30 for the embedding of the curved section 643 of the corresponding first side return bridge 64, and the second side return embedment The groove 52 is for the corresponding second side return bridge 65 curved convex surface section 653 to insert and fit and other related technical features (refer to Figure 7 and Figure 8), so that the return unit assembly 60 can be directly positioned during insertion, and at the same time The roller channel space is relatively defined, thereby simplifying the positioning structure, making assembly faster and more convenient, and having the advantages of a stable fixed position. In addition, the integrated structure of each reflow unit assembly 60 of the present invention can further reduce the reflow The minimum radius of gyration of the section is more conducive to the development trend of miniaturization of the cross-roller linear rail.

10: Slide 11: Guide groove 12: Side seat 20: Orbit 30: end cap B: Circulation channel B1: Load section B2: Non-load section 40: roller 50: Reflux tank unit 51: The first side return groove 52: Second side return groove 53: abutment surface 60: Reflow unit components 61: The first side duct part 62: Second side duct 63: Insertion limit 63B: Insert the limit part 64: First side return bridge 641: link end 642: export side 643: Curved Arch Section 65: Second side return bridge 651: Binding End 652: send end 653: Curved convex section 66: Through flow channel 671: First side return curve 672: Second side return curve 68: bump 69: Concave Edge L1: axis

Figure 1 is a combined perspective view of a preferred embodiment of the cross-roller linear rail of the present invention. Figure 2 is a top view of a preferred embodiment of the cross-roller linear rail of the present invention. Fig. 3 is a cross-sectional view of 3-3 of Fig. 2. Fig. 4 is a cross-sectional view of 4-4 in Fig. 2. Figure 5 is a cross-sectional view of Figure 3 5-5. Fig. 6 is a cross-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. Fig. 9 is an exploded perspective view of part of the components of the preferred embodiment of the cross-roller linear rail of the present invention. FIG. 10 is a schematic diagram of the corresponding relationship of the partial component decomposition state of the present invention. Fig. 11 is a perspective view of the exploded correspondence relationship between the components of the reflux unit of the present invention. Figure 12 is a side view of one end of the reflow unit assembly of the present invention. Fig. 13 is a cross-sectional view of Fig. 12 13-13. Fig. 14 is a diagram of another embodiment of the partial structure of the present invention.

30: end cap

50: Reflux tank unit

51: The first side return groove

52: Second side return groove

53: abutment surface

60: Reflow unit components

61: The first side duct part

62: Second side duct

63: Insertion limit

64: First side return bridge

641: link end

643: Curved Arch Section

65: Second side return bridge

651: Binding End

653: Curved convex section

66: Through flow channel

Claims (5)

A circulation channel structure of a cross-roller linear rail. The cross-roller linear rail basically includes a sliding seat, a rail, two end covers, 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 guiding groove for the sliding fitting of the track, two sides of the guiding groove are relatively defined to form two side seat parts, the two end covers are respectively assembled on two opposite ends of the sliding seat, the plural Circulation channels are separately provided at the corresponding matching positions in the two side seat parts and the two end cover structures. Each circulation channel includes a load section and a non-load section that are connected to each other to form a roller circulation path. The load section is set 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 assemblies is an integrally formed structure, and its integral type The formation includes: a first side duct part and a second side duct part arranged in parallel, an insertion limit part formed at the same end of the first side duct part and the second side duct part, and connected to the first side duct part A first side return bridge and a second side return bridge that are convex at the same end as the second side duct portion, wherein the first side return bridge has a connecting end, a lead-out end, and between the connecting end and A curved section between the lead-out ends, the connecting end is connected to an end of the first side duct part, and the lead-out end is connected to an end corresponding to the load section; the second side return bridge has A joint end, a sending end, and a curved convex section between the joint end and the sending end, the joint end is connected to an end of the second side duct part, and the curved convex section passes through the joint in a staggered manner The curved section of the return bridge on the first side defines a flow passage between the curved convex section and the curved section, and the sending end is connected to the corresponding end of the load section; Each of the recirculation groove units is formed on the end cover structure, and each of the recirculation groove units includes a first side recirculation groove and a second side recirculation groove in a staggered arrangement relationship. The depth of the first side recirculation groove is Larger than the second side return groove, the first side return groove is used for the corresponding curved section of the first side return bridge to be inserted and matched, and the curved section is inserted into the first side There is still a gap between the return grooves to define and form a first side return curve; in addition, the second side return grooves are provided for the corresponding curved convex section of the second side return bridge to be inserted and fitted, and After the curved convex surface section is inserted, there is still a distance between the second side return groove, thereby defining and forming a second side return curve; wherein, the end cover is formed with at least one abutting surface, the at least An abutment surface is provided for the insertion limit portion of the corresponding return unit assembly to abut against, so that the depth of the curved section of the first side return bridge embedded in the first side return groove is accurately limited. The circulation channel structure of the cross-roller linear rail according to claim 1, wherein the insertion limit part of the return unit assembly is formed at the same end of the first side duct part and the second side duct part Composed of a plate body shape. The circulation channel structure of the cross-roller linear rail according to claim 1, wherein the insertion limit part of the return unit assembly is formed at the same end of the first side duct part and the second side duct part The end of the tube is formed. The circulation channel structure of the cross-roller linear track according to claim 1, 2 or 3, wherein the length of the flow passage corresponding to the side of the second side return curve is equal to the width of the first side return bridge, And the flow channel is a straight hole wall shape. The circulation channel structure of the cross-roller track as described in claim 2, wherein between the first side return groove and the second side return groove, and between the first side return bridge and the second side return bridge Between them, they are in a staggered arrangement relationship at an angle of 90 degrees; and each of the abutting surfaces is set to a groove type, and each of the abutting surfaces and the corresponding inserting limit parts of the plate body shape The upper and lower contours are set to be the same.

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