JP4417914B2 - Roller linkage holding device - Google Patents

Description

The present invention relates to a roller connection / holding device, and more particularly to a roller connection / holding device applicable to a linear system using a roller as a rolling element.

  Currently, there are three main types of roller dividers for linear guideways available on the market.

One is proposed in US Pat. No. 6,626,572 B2. As shown in FIG. 1, the holding chain 12 is assembled to both end faces of the roller 10.
In the manufacturing method of the partition portion 11 of the holding chain 12, the roller 10 is used as a core of a mold. First, the roller 10 is installed in the mold and resin injection molding is performed along the surface of the roller 10. However, this has the following drawbacks.

  (A) Since the method of manufacturing the partition portion 11 of the holding chain 12 is directly molded between the rollers 10 using the roller 10 as the core of the mold, the production technique is extremely complicated. The size of the mold needs to be changed according to the number of rollers. When a longer chain 12 is to be manufactured, the number of rollers 10 to be used is increased, and the production work time is increased. Production difficulty is also improved. Therefore, the production cost is high.

  (B) Since the partition part 11 is molded directly between the rollers 10 with the roller 10 as the core of the mold, before the partition part 11 is molded, a mold release agent is applied between the partition part 11 and the roller 10. The production work becomes complicated and the production cost is high.

  (C) The partition 11 in the chain 12 has a circular arc surface corresponding to the roller 10, and the radius of curvature of the circular arc surface coincides with the radius of the roller 10, so that the partition 11 and the roller 10 are in surface contact. The frictional resistance is greatly increased.

The second is proposed in US Pat. No. 6,390,678 B1. As shown in FIG. 2, the roller 10 is the core of the mold, the partition part 13 is injection-molded between the rollers 10, and the connecting part 131 that connects the partition part 13 is also injection-molded. .
Each partition 13 corresponds to the contact rolling surface of the roller 10 and is connected to the connecting part 131. Such a configuration is very similar to the conventional one, but the forming position of the connecting portion 131 is different. However, this has the following drawbacks.

  (A) Since the connecting portion 131 and the partitioning portion 13 are formed directly between the rollers 10 using the roller 10 as a core of the mold, the production technology is extremely complicated. The size of the mold needs to be changed according to the number of rollers. When a longer chain 12 is to be manufactured, the number of rollers 10 to be used is increased, and the production work time is increased. Production difficulty is also improved, so production costs are high.

  (B) Since the partition part 13 is molded directly between the rollers 10 using the roller 10 as the core of the mold, a mold release agent is applied between the partition part 13 and the roller 10 before the partition part 13 is molded. Production work becomes complicated and production costs are high.

  (C) Since the connecting portion 131 is provided in the center of the contact rolling surface of the roller 10, it is necessary to open a guide groove corresponding to the connecting portion 131 in the slider, and it is difficult to process the guide groove. The roller rolling smoothness is lowered by the connecting portion 131.

  (D) The partition portion 13 corresponds to the roller 10 with an arc surface, and the radius of curvature of the arc surface coincides with the radius of the roller 10, so that the partition portion 11 and the roller 10 are in surface contact, and the frictional resistance is Increase significantly.

  (E) Although the most important load of the roller 10 is in the radial direction, since the connecting portion 131 is located in the radial direction of the roller 10, the contact surface contact between the roller and the slider is greatly reduced, and the load capacity of the linear guideway And the stiffness is greatly reduced.

  The third is proposed in US Patent US2005 / 0152625 A1. As shown in FIG. 3, two contact portions 15 that are parallel to each other are provided on the contact side sides of both end faces of the roller 10, and a large number of support portions 14 that are inclined inward from the two connection portions 15. Is provided. A partition portion 16 is provided at the other end of the support portion 14, and the partition portion 16 abuts on the other rolling contact side of the roller 10. However, this has the following drawbacks.

  (A) Since the two connecting portions 15 are provided on the contact sides of the both end faces of the roller 10, and the contact between the two connecting portions 15 and the working contact portion of the roller 10 is a surface contact, the rolling of the roller is smooth. The sex goes down and the frictional resistance increases significantly.

(B) Since the support portion 14 is inclined inward, the shorter partitioning portion 16 only comes into contact with the middle stage of the roller 10, and the roller 10 only receives a holding force from one side. Sometimes the partition 16 and the support 14 are easy to swing, so that the holding force on the roller 10 is not uniform.

  A main object of the present invention is to provide a roller connection and holding device that facilitates a molding process and enables mass production.

  The next objective of this invention is to provide the roller connection holding | maintenance apparatus with which operation | movement is stable and smooth.

Another object of the present invention is to provide a roller connection holding device that can store a lubricant for lubricating the roller.

The invention of the present application made to achieve the above object is an apparatus that is installed in a linear system, accommodates a plurality of rollers, and flows in a roller passage in the linear system, wherein both ends of the aligned rollers are arranged. and two connecting portions disposed respectively on the side, facing each other, a linear holding portion which is connected perpendicular to the connecting portion, a roller connection holding device comprising a linear partition portion for partitioning the respective roller The partitioning portion is positioned to be connected to the upper and lower ends of the two holding portions facing each other, and a roller rolling surface is provided on both sides of the two partitioning portions connected to the upper and lower ends of the two holding portions. Support side sides that are in linear contact with each other are provided, and a mold opening escape groove is provided at a connecting portion between the partition portion and the holding portion, and the two partition portions and the two holding portions provide a roller. While maintaining, and characterized in that it constitutes a hollow structure of a rectangular carrying lubricating oil, and summarized in that a roller connection holding device.

The roller connection holding device according to claim 1, wherein the connecting portion is located between two working contact portions of a roller rolling surface. This is the gist.

In the invention of the present application, the support side sides of the two partition portions correspond to the axis of the roller, the corner portions thereof are in linear contact with the rolling surfaces of the rollers, and the upper and lower partition portions work up and down the rollers. The gist of the present invention is the roller connection holding device according to claim 1, wherein the roller connection holding device is located on both sides of the contact portion.

In the present invention, summarized in that the two articulation is characterized by causing almost a Itasa the distance between the two working contact portion of the rolling surface of the roller, a roller coupling holding device according to claim 2 It is said.

According to the roller connection and holding device according to the present invention, the molding process becomes easy, mass production becomes possible, operation is stable and smooth, and the lubricant can be stored for lubricating the roller. is there.

  Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

  First, reference will be made to FIGS. The roller connection holding device according to the present invention is installed in a linear system, accommodates a number of rollers 20, flows in a roller passage in the linear system, and includes a connecting portion 30, a holding portion 40, a partition portion 60, including.

The connecting portion 30 is attached to the end faces 21 of the aligned rollers 20, which substantially match the distance between the two work contact portion 221 of the rolling surface 22 of the roller 20, in the present invention, the connecting portion There have good lever holds between the two working contact portion 221 of the rolling surface 21 of the roller 20.

  The holding portions 40 oppose each other and are vertically connected to the connecting portion 30.

The partition part 60 is connected to and positioned at the upper and lower ends of the two holding parts 40 facing each other, and the partition parts 60 at the upper and lower ends face each other, partition the roller 20, and on both sides of the partition part 60. Support side 61 is provided.
The roller 20 and the support side 61 are in linear contact with each other, all the support sides 61 correspond to the axial center of the roller 20, and upper and lower partition portions 60 are on both sides of the up and down working contact part 221 of the roller 20. A mold opening relief groove 50 is provided at a location where the partition portion 60 and the holding portion 40 are connected.
Moreover, the two partition parts 60 and the two holding | maintenance parts 40 comprise a rectangular hollow structure, the roller 20 is hold | maintained by the said hollow structure, and it can also hold | maintain lubricating oil.

  Next, the usage state of the present invention will be described in detail with reference to FIGS.

  The partition part 60 according to the present invention is positioned so as to be connected to the upper end and the lower end of two opposing holding parts 40. The partition portions 60 at the upper and lower ends face each other and partition the rollers, whereby the rollers 20 are stably held and can be operated smoothly.

  In addition, support side 61 is provided on both sides of the partition 60. Since the roller 60 and the support side 61 are in linear contact with each other and the support side 61 of the opposing partition 60 corresponds to the axis of the roller 20, the frictional resistance between the partition 60 and the roller 20 is not high.

In particular, the roller 20 can be stably operated by the partitioning portions 60 positioned on both sides of the contact portion 221 that works up and down of the roller 20. As a result, the flow of the roller connecting and holding device is stable and smooth. No more collisions.
In addition, the rectangular hollow structure constituted by the two partition portions 60 and the two holding portions 40 can also hold lubricating oil and prevent the holding portion 40 and the upper and lower partition portions 60 from being deformed. Can do.
Thereby, the roller connection holding | maintenance apparatus which concerns on this invention does not shake at the time of a driving | operation, As a result, the shake of a linear guideway, a frictional resistance, and a noise are reduced significantly.

Moreover, in this invention, as shown in FIG. 7, the mold opening escape groove | channel 50 is provided in the connection location of the partition part 60 and the holding | maintenance part 40, and the connection part 30, the holding | maintenance part 40, and the partition part 60 mutually mutually It is configured to have a parallel or vertical relationship.
Therefore, the mold A can easily pass through the mold opening escape groove 50.
Further, since the roller connection and holding device according to the present invention has a rectangular hollow structure for holding the roller 20, it is not necessary to insert the roller first and perform injection molding as in the prior art, and the slider B provided in the mold A The rectangular hollow structure can be formed simply by pulling out.

It is a perspective view which shows the combined state of the conventional one. It is a disassembled perspective view of another conventional thing. It is a perspective view which shows the combined state of another conventional thing. It is a perspective view which shows the union state of this invention. It is a perspective view which shows the state which assembled | attached the roller to this invention. FIG. 6 is an enlarged side view of a part of FIG. 5. It is a section schematic diagram showing injection molding of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Roller 11 Partition part 12 Chain 13 Partition part 131 Connection part 14 Inclination support part 15 Connection part 16 Partition part 20 Roller 21 End surface 22 Rolling surface 221 Working contact part 30 Connection part 40 Holding part 50 Die opening relief groove 60 Partition part 61 Support Side A Mold B Slider

Claims (4)

A device installed in the linear system to accommodate a plurality of rollers and flowing through the roller passage in the linear system, two connecting portions respectively disposed on both end surfaces of the aligned plurality of rollers; facing each other, a linear holding portion which is connected perpendicular to the connecting portion, a roller connection holding device comprising a linear partition portion for partitioning the respective rollers,
The partition portion is positioned and connected to the upper end and the lower end of two holding portions facing each other,
Support sides that are in linear contact with the rolling surface of the roller are provided on both sides of the two partition parts connected to the upper and lower ends of the two holding parts, respectively.
A mold opening relief groove is provided at a connecting portion of the partition part and the holding part,
The two partition parts and the two holding parts constitute a rectangular hollow structure that holds a lubricating oil while holding a roller.
Roller linkage holding device.   The roller connection holding device according to claim 1, wherein the two connecting portions are located between two working contact portions of a rolling surface of the roller. The support sides of the two partition portions correspond to the roller axis, the corners thereof are in linear contact with the rolling surface of the roller, and the upper and lower partition portions are on both sides of the roller's vertical working contact portion. The roller connection holding device according to claim 1, wherein the roller connection holding device is located.   The roller connecting and holding device according to claim 2, wherein the two connecting portions substantially match the distance between the two working contact portions of the rolling surface of the roller.

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