JPH0554417U - Side roller chain with brake mechanism - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] In a chain with side rollers, to provide the side rollers with an appropriate stay function and transport function (brake function). In a chain including a roller that is loosely fitted to a connecting pin that connects a link plate, a recess is provided on the side surface of the roller 10, and a plurality of protrusions that axially protrude from the bottom of the recess are formed in an annular shape. I did it The protrusion elastically contacts the side surface of the link plate or the side surface of the washer W for preventing the roller from coming off, and gives resistance to the rotation of the roller.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a chain having a side roller for conveying articles on one side or both sides of a chain, which is capable of sending out an article staying on the side roller by an external force by a frictional force when the external force is released. Regarding side roller chain with mechanism.

[0002]

[Prior art and its problems]

 In such a side roller chain, two functions are required. One is a function of allowing the side roller to rotate with respect to the connecting pin so that articles that come into contact with a stop plate or the like stay on the chain. The other is a function to convey the article by the frictional force between the side roller and the connecting pin when the stop plate is released. The conventional side roller chain described below includes the problem that the staying function and the carrying function vary.

FIG. 15 shows a general side roller chain 100 in which the side roller 101 is made of resin and the coefficient of friction between the side roller 101 and the connecting pin 102 is increased to balance the retention function and the conveyance function. Is kept. FIG. 16 shows that the spring 114 interposed between the side roller 111 and the link plate 113 enhances the axial pressing force between the side roller 111 and the link plate 113 and the washer 115, so that the retention function and the conveyance function can be improved. Keeps the balance of functions. Also, an O-ring may be used instead of the spring 114.

However, the one shown in FIG. 15 has a drawback that the oil penetrates between the side roller 101 and the connecting pin 102, so that the friction coefficient is lowered and the carrying function is impaired. Further, when the side roller 101 having a large friction coefficient is used, so-called squeaking noise may be generated between the side roller 101 and the connecting pin 102.

In FIG. 16, since the spring 114 is subjected to heat treatment, the length of the finished product changes due to the distortion, and the pressing force at each side roller 111 is different, and as a result, the link plate 113 and the washer 115. The frictional force between the roller and the side roller 111 varies. Occasionally, the side roller 111 may not rotate at all.

[0006]

[Means and Actions for Solving the Problems]

 The present invention solves the above-described problems in a chain including a roller that is loosely fitted to a connecting pin that connects a link plate, by making the following improvements.

First, the above problem is solved by a chain in which a roller has a plurality of projections projecting from its side surface in the axial direction. Such an improvement can be applied to both those having rollers outside the link plates and those having rollers between the link plates. The protrusion elastically contacts the side surface of the link plate or the side surface of the washer for preventing the roller from coming off, and gives resistance to the rotation of the roller.

Secondly, the above problem is solved by a chain having a disc spring loosely fitted to the connecting pin on at least one side surface of the roller. Such an improvement can be applied to both those having rollers outside the link plates and those having rollers between the link plates. The disc spring presses the roller against the side surface of the link plate or the side surface of the washer for preventing the roller from coming off, and gives resistance to the rotation of the roller.

Thirdly, to make the roller easily deformable, specifically, to form a plurality of through holes in the axial direction in the roller, to form a radial slit in the roller, and The problem is solved by forming the outermost layer of the roller with a multi-layer structure in the radial direction and using a material softer than the innermost layer. Such improvements can be used on all side roller chains. When an article is loaded, the roller itself deforms, the friction coefficient with the article increases, and a large resistance force is obtained. It is not necessary to apply the first to third inventions to all the rollers attached to the chain. For example, normal rollers and rollers according to the present invention may be arranged alternately.

Fourth, the above problem is solved by arranging a part of a link plate whose height from the center line connecting the connecting pin holes to the top is substantially the same as the radius of the roller. .. Such a link plate supports the article loaded on the chain together with the roller. An appropriate resistance force can be adjusted by adjusting the ratio of the number of link plates having a specific shape to the number of rollers. Further, the above problem is solved by mounting an attachment having a height substantially the same as the radius of the roller on at least one side of the center line connecting the connecting pin holes to the link plate. The operation is the same as that of the structure in which the link plate is deformed as described above.

[0011]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show a first embodiment of the present invention. In this embodiment, the roller 10 is modified. The roller 10 is made of self-lubricating plastic. The roller 10 is formed with annular recesses 11, 11 on both side surfaces. A plurality of protrusions 12 extending in the axial direction from the bottom surface are formed in the recesses 11, 11. The length of the protrusion 12 is longer than the depth of the recess 11 and protrudes from the side surface of the roller 10 in the axial direction. The plurality of protrusions 12 are formed in an annular shape, and the diameter thereof is smaller than the height of the link plate R. This prevents the projection 12 from crossing the upper and lower edges of the link plate R. Further, the inner diameter of the recess 11 is smaller than the diameter of the washer W for preventing the roller from coming off. This prevents the washer W from entering the inside of the recess 11 and damaging or abrading the projection 12. The protrusion 12 does not stick out from the link plate R or the washer W for preventing the roller from slipping, but elastically abuts on these side surfaces to give resistance to the rotation of the roller 10.

3 to 5 show a second embodiment of the present invention. The present embodiment is characterized by a member that gives resistance to the rotation of the roller 20. The member that provides resistance is the disc spring 22. Although the disc spring 22 is fitted between the roller 20 and the washer W for preventing the roller from slipping off, it goes without saying that it may also be fitted between the roller 20 and the link plate R. Further, similar to the first embodiment, a recess may be formed on the side surface of the roller 20 so that the disc spring 22 is not deformed more than necessary. The disc spring 22 is formed of a self-lubricating plastic. In order to prevent wear of the roller 20, the disc spring 22 is preferably made of the same material as the roller 20. It can also be manufactured from wear resistant materials.

The disc spring 22 of FIG. 4 has a perfect conical shape, whereas the disc spring 23 of FIG. 5 has a conical shape with the slit 24 formed therein. The disc spring 23 provided with the slit 24 can be attached and detached after the chain is assembled. Any of the disc springs presses the roller 20 against the link plate R or the roller washer W to prevent the rotation of the roller 20.

6 to 8 show a third embodiment of the present invention. The rollers 30, 40, and 50 of this embodiment have a structure that can be easily deformed. By positively deforming the roller, the friction area with the article loaded on the chain is increased, and as a result, the coefficient of friction can be increased. First, the roller 30 shown in FIG. 6 is made of resin and has a plurality of through holes 31 formed in the axial direction. By using resin as the material and providing a plurality of through holes 31, the rigidity of the roller 30 is lowered and the roller 30 is easily deformed. As a result, the friction coefficient increases. The roller 40 shown in FIG. 7 is made of resin and has a large number of radial slits 41. The inner ring portion 42 is made of a relatively rigid resin. Due to the slit 41, the roller 40 is easily deformed to increase the coefficient of friction with the article loaded on the chain. The roller 50 in FIG. 8 has a multi-layer structure. The figure shows a two-layer structure. The inner first layer 51 is a relatively hard resin, and the outer second layer 52 is a relatively soft resin. Specific preferred examples of the material of the outer second layer 52 include foam urethane and rubber.

9 to 13 show a fourth embodiment of the present invention. In this embodiment, the friction force between the chain and the article is increased by devising the chain itself, not the roller. The chain 60 of FIG. 9 is a devised version of the link plate 61. In the link plate 61, the height from the center line connecting the connecting pin holes 62 to the top is substantially the same as the radius of the roller (not shown). The top portion 63 has an arc shape and is subjected to abrasion resistance near the top portion. By using such a link plate 61, the article loaded on the chain 60 is brought into sliding contact with the arc-shaped top portion 63, and a conveying force is applied from the chain 60. The desired retention function and transport function can be obtained by changing the ratio of the link plates of a specific shape in all the link plates and the number of rollers attached to the connecting pins.

10 and 11 are intended to achieve the function described with reference to FIG. 9 not by the link plate but by the attachment 70 attached to the link plate. The U-shaped attachment 70 is attached to the connecting pin 72 protruding from the side surface of the link plate 71 so as to straddle the upper portion of the chain. The top portion 73 of the attachment 70 has an arc shape. The height from the center line connecting the connecting pin holes to the top 73 of the attachment 70 is substantially the same as the radius of the roller. It is shown in FIG. 9 that the article loaded on the chain is provided with a transportation function by sliding contact with the arcuate top portion 73, and the desired transportation force can be obtained by the ratio of the number of rollers and the number of attachments. Same as the embodiment.

12 to 14 show a device similar to that of FIGS. 10 and 11. The attachments 80 and 90 of the present embodiment are snap-fitted to the holes 82 formed in the link plate 81 in FIGS. 12 and 13, and to the link plate 91 in FIG. It is attached by a bolt 92.

[0018]

[Effect of the device]

 Since the present invention is configured as described above, the frictional force due to oil is less likely to vary, and the retention function and the transfer function are stable. In addition, the number of parts is small and it can be manufactured at low cost.

Further, in the chain according to the first aspect, the problem is solved by the structural means of providing the protrusion that elastically deforms without depending on the material. Therefore, no special material is required. In addition, since the portion of the link plate that slides in contact with the fixed side is located outside the inner diameter of the roller, the frictional force changes, for example, the frictional force changes depending on the length of the protrusions or the frictional force changes depending on the number of protrusions. Easy to change force. Further, in the case of the side roller chain, since the projection contacts the link plate and the washer, it is not necessary to accurately set the distance between the link plate and the washer as in the conventional case, and therefore the manufacturing is easy.

In the chain according to the second aspect, the frictional force can be applied to the chain without changing the rollers. Further, by using the disc springs having the slits, the number of disc springs can be appropriately increased or decreased, and the retention function and the transport function can be separately changed even after the chain is installed.

In the chains according to claims 3 to 5, the frictional force is not obtained depending on the material but the friction coefficient is increased by the structure of the roller to obtain a large frictional force, so that there is almost no limitation on the material.

In the chains of claims 6 and 7, the staying function and the carrying function are obtained by separate members, and the carrying function can be obtained by a large frictional force of sliding friction.

[Brief description of drawings]

FIG. 1 is a sectional view showing a first embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view of the roller shown in FIG.

FIG. 3 is a sectional view showing a second embodiment of the present invention.

FIG. 4 is a perspective view of a disc spring fitted and inserted into the connecting pin of FIG.

FIG. 5 is a perspective view of another disc spring.

FIG. 6 is a side view of a roller according to a third embodiment of the present invention.

FIG. 7 is a side view of a roller according to a modified example of the third embodiment of the present invention.

FIG. 8 is a side view of a roller according to still another modification of the third embodiment of the present invention.

FIG. 9 is a side view of a link plate according to a fourth embodiment of the present invention.

FIG. 10 is a side view of a chain equipped with an attachment according to a fourth embodiment of the present invention.

11 is a perspective view of the chain of FIG.

FIG. 12 is a side view of a chain equipped with another attachment according to the fourth embodiment of the present invention.

13 is a cross-sectional view of the chain of FIG.

FIG. 14 is a side view of a chain equipped with still another attachment according to the fourth embodiment of the present invention.

[Explanation of symbols]

 10, 20, 30, 40, 50 Roller 11 Recess 12 Protrusion 22, 23 Disc spring 24 Slit 31 Through hole 41 Slit 61, 71, 81, 91 Link plate 62, 82 Connection pin hole 70, 80, 90 Attachment 72 Connecting pin 92 bolt

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[Procedure amendment]

[Submission date] November 25, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Brief explanation of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

FIG. 1 is a sectional view showing a first embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view of the roller shown in FIG.

FIG. 3 is a sectional view showing a second embodiment of the present invention.

FIG. 4 is a perspective view of a disc spring fitted and inserted into the connecting pin of FIG.

FIG. 5 is a perspective view of another disc spring.

FIG. 6 is a side view of a roller according to a third embodiment of the present invention.

FIG. 7 is a side view of a roller according to a modified example of the third embodiment of the present invention.

FIG. 8 is a side view of a roller according to still another modification of the third embodiment of the present invention.

FIG. 9 is a side view of a link plate according to a fourth embodiment of the present invention.

FIG. 10 is a side view of a chain equipped with an attachment according to a fourth embodiment of the present invention.

11 is a perspective view of the chain of FIG.

FIG. 12 is a side view of a chain equipped with another attachment according to the fourth embodiment of the present invention.

13 is a cross-sectional view of the chain of FIG.

FIG. 14 is a side view of a chain equipped with still another attachment according to the fourth embodiment of the present invention.

FIG. 15 is a partial sectional view of a conventional side roller chain.
is there.

FIG. 16 is a partial cross section of another conventional side roller chain.
It is a figure.

[Explanation of reference numerals] 10, 20, 30, 40, 50 Roller 11 Recess 12 Protrusion 22, 23 Disc spring 24 Slit 31 Through hole 41 Slit 61, 71, 81, 91 Link plate 62, 82 Connection pin hole 70, 80,90 Attachment 72 Connecting pin 92 Bolt

Front page continuation (72) Inventor Katsutoshi Shibayama 4-1796, Tsurumi, Tsurumi-ku, Osaka-shi, Osaka (72) Inventor Makoto Kinpei 4-17-96, Tsurumi, Tsurumi-ku, Osaka, Osaka Inside the Tsubakimoto Chain

Claims (7)

[Scope of utility model registration request] 1. A chain comprising a roller loosely fitted to a connecting pin connecting a link plate, wherein the roller has a plurality of projections axially protruding from a side surface thereof. 2. A chain comprising a roller loosely fitted to a connecting pin connecting a link plate, the chain having a disc spring loosely fitted to the connecting pin on at least one side surface of the roller. 3. A chain comprising a roller loosely fitted to a connecting pin connecting a link plate, wherein a plurality of axial through holes are formed in the roller. 4. A chain comprising a roller loosely fitted to a connecting pin connecting a link plate, wherein a radial slit is formed in the roller. 5. A chain comprising a roller loosely fitted to a connecting pin connecting a link plate, wherein the roller has a multi-layered structure in the radial direction, and the outermost layer is formed of a material softer than the innermost layer. Characterized chain. 6. A chain including a roller loosely fitted to a connecting pin connecting a link plate, wherein a height from a center line connecting the connecting pin holes to a top is substantially the same as a radius of the roller. A chain that includes a link plate. 7. A chain including a roller loosely fitted to a connecting pin connecting a link plate, wherein the chain has a height substantially the same as the radius of the roller on at least one side from a center line connecting the connecting pin holes. A chain in which an attachment is attached to the link plate.