JP2016006332A - Chain - Google Patents

Abstract

PROBLEM TO BE SOLVED: To replace a roller without removing a bush from a bush link plate, in a chain having the bush link plate, the bush fitted to a bush fitting hole and the roller rotatably attached to the outer periphery of the bush.SOLUTION: A chain includes a bush link plate having a bush fitting hole, a bush fitted into the bush fitting hole, and a roller rotatably attached to the outer periphery of the bush. The roller is formed by a split type roller divided into two or more.

Description

The present invention relates to a chain of a type in which a roller is provided on the outer periphery of a bush.

  FIG. 8 is a diagram showing one type of chain configuration.

  The chain 160 has plate-like pin link plates (outer link plates) 162 that oppose each other, and the pin link plates (outer link plates) 162 have pin insertion holes at both ends.

The chain 160 has plate-like bush link plates (inner link plates) 164 that oppose each other, and the bush link plates (inner link plates) 164 have bush fitting holes at both ends.
A fitting portion at both ends of a cylindrical bush 166 is fitted into the bush fitting hole, and a cylindrical roller 168 is rotatably attached to the outer periphery of the bush 166.

  The bushing 166 is provided with a fitting part that fits into a bushing fitting hole of the bushing link plate (inner link plate) 164 at both ends, and a pin through hole through which the pin 170 passes is provided at the center part.

The chain 160 has a rod-like pin 170.
The pin 170 has a cylindrical main body inserted into the pin through-hole of the bush 166, and the end is locked to a pin link plate (outer link plate) 162.

  The chain 160 is flexibly connected by being assembled as described above.

JP 2007-176615 A

  When a chain having a roller is driven for a long period of time, the roller may be worn away and it may be necessary to replace only the roller. At that time, the roller that was rotatably mounted on the outer periphery of the bush was conventionally an integral cylindrical part. To replace the roller, the bush was removed from the bush link plate, the original roller was removed, and a new roller was removed. It was necessary to attach.

  An object of the present invention is to make it possible to replace a roller without removing the bush from the bush link plate.

The present invention has been made to solve the above problems,
A bushing link plate having bushing fitting holes;
A bush that fits into the bush fitting hole;
In the chain having a roller rotatably attached to the outer periphery of the bush,
The roller is formed by a split roller divided into two or more.

Further, the present invention provides a groove on at least one of the end faces of the split roller,
A split roller is coupled by engaging a stop ring with the groove.

  Further, the present invention is characterized in that a convex portion and a concave portion that are engaged with each other when the split-type rollers are combined are provided on the combination surface of the split-type rollers.

According to the present invention as described above,
A bushing link plate having bushing fitting holes;
A bush that fits into the bush fitting hole;
In the chain having a roller rotatably attached to the outer periphery of the bush,
By forming the roller with a split roller divided into two or more,
It is possible to replace the roller without removing the bush from the bush link plate.

1 is an overall view of a chain according to a first embodiment of the present invention. It is a figure which shows the split type | mold roller which comprises the roller of the chain which concerns on 1st embodiment of this invention, (a) is a front view, (b) is a side view. It is a figure which shows the stop ring which comprises the roller of the chain which concerns on 1st embodiment of this invention. It is a figure which shows the split type | mold roller which comprises the roller of the chain which concerns on 2nd embodiment of this invention, (a) is a front view, (b) is a side view. It is a figure which shows the split type | mold roller which comprises the roller of the chain which concerns on 3rd embodiment of this invention, (a) is a front view, (b) is a side view. It is a figure which shows the split type | mold roller which comprises the roller of the chain which concerns on 4th embodiment of this invention, (a) is a front view, (b) is a side view. It is a whole figure of the chain concerning a 5th embodiment of the present invention. It is a general view of the conventional chain.

  Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings. Description of the same parts as in the conventional example is omitted.

  FIG. 1 is an overall view of a chain 2 according to the first embodiment of the present invention. FIG. 2 is a view showing a split roller 12 (20) constituting the roller 10 of the chain 2 according to the first embodiment of the present invention, where (a) is a front view and (b) is a side view. . FIG. 3 is a view showing the stop ring 38.

  The roller 10 of the chain 2 according to the first embodiment of the present invention combines two split rollers 20 (12) shown in FIGS. 2 (a) and 2 (b) with a stop ring 38 shown in FIG. Is formed. The stop ring for the second embodiment and below is omitted for both the shaft and the hole.

As shown in FIGS. 2A and 2B, the split roller 20 has a substantially semi-cylindrical shape, and grooves 32 for engaging a shaft stop ring 38 are formed on both end faces 22 and 24. .
The groove 32 is formed so that the back side of the end faces 22 and 24 bite in the radial direction in order to engage the shaft stop ring 38 (formed so as to bite in the direction of the inner peripheral surface 30). .

Since the shaft stop ring 38 is elastically deformed in the direction in which the diameter increases, the direction in which the diameter of the shaft stop ring 38 shown in FIG. 3 increases in the state where the combination surfaces 26 of the two split rollers 20 are combined with each other. The two split-type rollers 20 can be combined and integrated by elastically deforming and inserting into the back side of the groove 32 and engaging.

The combination surface 26 of the split roller 20 is provided with a convex portion 34 and a concave portion 36, respectively. When the split rollers 20 are joined together, when the combination surfaces 26 are combined with each other, the convex portion 34 and the concave portion 36 engage with each other. The roller 10 can be formed.

  Thus, in the chain 2 according to the first embodiment of the present invention, the groove 32 formed in the split roller 20 with the shaft stop ring 38 in a state where two split rollers 20 are combined. By engaging with each other, the two split rollers 20 can be coupled to form the roller 10.

  By configuring the roller of the chain in this way, it becomes possible to easily remove and attach the roller from the chain when it is necessary to replace the roller of the chain due to wear due to years of use.

  4A and 4B are diagrams showing a split roller 40 constituting a roller of a chain according to the second embodiment of the present invention, where FIG. 4A is a front view and FIG. 4B is a side view.

As shown in FIGS. 4A and 4B, the split roller 40 has a substantially semi-cylindrical shape, and grooves 52 are formed on both end faces 42 and 44 for engaging a stop ring for a shaft.
Further, a convex portion 54 and a concave portion 56 are provided on the side surfaces of the split roller 40, respectively.

  Also in the split roller 40 constituting the chain roller according to the second embodiment, the shaft stop ring is engaged with the groove 52 formed in the split roller 40, and the two split rollers 40 are moved. By joining and forming a roller, the roller can be easily removed from and attached to the chain when it becomes necessary to replace the roller in the chain, for example, due to wear from years of use.

  FIG. 5 is a view showing a split roller 60 constituting a roller of a chain according to a third embodiment of the present invention, where (a) is a front view and (b) is a side view.

As shown in FIGS. 5A and 5B, the split roller 60 has a substantially semi-cylindrical shape, and grooves 72 for engaging the stop rings for holes are formed on both end faces 62 and 64.
The groove 72 is formed so that the rear side of the end faces 62 and 64 extends in the direction of the outer peripheral surface 68 in order to engage the stop ring for holes.

  Since the hole stop ring is elastically deformed in the direction in which the diameter is reduced, the hole stop ring is elastically deformed in the direction in which the diameter is reduced in the state where the two split rollers 60 are combined. By inserting and engaging, the two split rollers 60 can be combined and integrated.

  Further, a convex portion 74 and a concave portion 76 are provided on the combination surface of the split roller 60, respectively. When combining the split rollers 60, when the combination surfaces 66 are combined with each other, the convex portions 74 and the concave portions 76 are engaged. A roller can be formed.

  FIG. 6 is a view showing a split roller 80 constituting a chain roller according to a fourth embodiment of the present invention, in which (a) is a front view and (b) is a side view.

  By combining two such split-type rollers 80, it is possible to combine and integrate two split-type rollers 80 as in the third embodiment.

  Although the embodiment of the present invention has been described above, the technical scope of the present invention is not affected by the above-described embodiment. It is obvious for those skilled in the art that various modifications or modifications can be conceived within the scope of the technical idea described in the claims, and these are naturally within the technical scope of the present invention. It is understood that it belongs.

  For example, in the embodiment, a chain having a pin link plate (outer link plate) and a bush link plate (inner link plate) (consisting of, for example) has been described. The present invention is applicable to a chain of a type in which a roller is provided.

  That is, for example, the present invention can also be applied to an offset type chain as shown in FIG.

  Further, in the embodiment, an example is shown in which grooves are provided on both end faces of the split roller and the stop ring is engaged. However, grooves may be provided on one end face of the split roller and the stop ring may be engaged. . In the embodiment, an example in which a roller is formed by two split-type rollers has been described, but three or more split-type rollers may be formed in combination.

2 Chain 4 Pin link plate (outer link plate)
6 Bush link plate (inner link plate)
8 bush 10 roller 12 split roller 14 stop ring 16 cotter pin 18 T pin 20 split roller 22, 24 end face 26 combination surface 28 outer peripheral surface 30 inner peripheral surface 32 groove 34 convex portion 36 concave portion 38 stop ring 40 split roller 42, 44 End surface 46 Combination surface 48 Outer surface 50 Inner surface 52 Groove 54 Protrusion 56 Concave portion 60 Split roller 62, 64 End surface 66 Combination surface 68 Outer surface 70 Inner surface 72 Groove 74 Convex portion 76 Concave portion 80 Split roller 82, 84 End surface 86 Combined surface 88 Outer surface 90 Inner surface 92 Groove 94 Protrusion 96 Concave 100 Chain 102 Offset link plate 108 Bush 110 Roller 112 Split roller 114 Stop ring 116 Totter pin 118 T pin 160 Chain 162 Pin link plate (outer link) plate)
164 Bush link plate (inner link plate)
166 Bush 168 Roller 170 Pin

Claims (3)

A bushing link plate having bushing fitting holes;
A bush that fits into the bush fitting hole;
In the chain having a roller rotatably attached to the outer periphery of the bush,
A chain formed by split rollers divided into two or more. A groove is provided on at least one of the end faces of the split roller,
The chain according to claim 1, wherein a split roller is coupled by engaging a stop ring with the groove. The chain according to claim 1, wherein a convex portion and a concave portion that are engaged with each other when the split mold rollers are combined are provided on a combination surface of the split rollers.