JP2001304345A - Roller chain - Google Patents

Abstract

(57) [Summary] (With correction) [Problem] A projection is provided between an inner plate and an outer plate, so that it has a better dustproof effect and an effect of keeping lubricating oil, and has an effect of forming a shaft hole of both plates. Since a shaft tube is protrudingly provided on the peripheral edge, a shear force is diffused to provide a roller chain capable of suppressing damage to the roller chain. SOLUTION: A plurality of chain units of a roller chain are constituted by two outer plates 11, a shaft rod 12 and an inner plate 15, and two outer plates have two shaft holes 111 and an edge of the outer plate. A protruding portion 112 or a shaft tube 152 protruding along the end in the direction of the other outer plate is provided, and the shaft rod is pivotally connected to the shaft holes 151 of the two outer plates,
A roller 13 is attached to a shaft pivotally mounted between the two outer plates.
Is fitted, and a bush 14 is provided between the shaft rod and the roller.
Are fitted, and the shaft tube of the inner plate is fitted with the protrusion of the outer plate.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roller chain, and more particularly to a roller chain capable of improving the dust-proofing effect and extending the service life.

[0002]

2. Description of the Related Art Conventionally, this type is as follows.

In the structure of the conventional roller chain shown in FIG. 1, the roller chain is formed by connecting a plurality of chain units 90. Each chain unit 90 includes two outer plates 91, two shaft rods 92, two bushes 94, and two outer plates 91. A shaft hole 911 for drilling two shaft rods 92 is formed in the two outer plates 91, a roller 93 and a bush 94 are fitted in the two shaft rods 92, and two inner plates are formed. A single roller chain is formed in the shaft 95 such that a shaft hole 951 for forming a shaft rod 92 adjacent to a different chain unit 90 is penetrated.

[0004]

The conventional roller chain formed in this way is always used for transmitting power of a mechanical device. The roller chain is made of a metal material in order to enhance the solidity and tensile strength in use. Further, lubricating oil is always applied to the roller chain in order to prevent metal corrosion or to ensure smooth operation.

[0005] However, when the roller chain coated with the lubricating oil is used after long-term exposure in the wilderness,
Since the lubricating oil itself has tackiness, fine particles or dust floating in the air are rather collected and adhered. As described above, the fine particles or dust floating in the air enter the surface on which the shaft 92, the roller 93, and the bush 94 rotate together with the lubricating oil, and thus not only increase the friction of the rotating surface, but also increase the friction. Since the phenomenon of friction continues to exist, there is a problem that the roller chain is broken.

[0006] Further, since such a conventional roller chain is disposed between both transmission wheels with a precise size and length, a smooth transmission power can be obtained because the roller chain has an appropriate slack. It is a translation. Each chain unit 9
The outer plate 91, the inner plate 95 and the axle rods 92, rollers 93, and bushings 94 pivotally connected to each other as the tension and friction phenomenon between each other become more intense.
The lubricating oil present on the surface to which the friction is applied is exuded by the tension and the friction. Further, since the lubricating oil belongs to the liquid and has volatility, the lubricating oil exuded by the above-mentioned tension and friction gradually volatilizes and disappears, so that it is impossible to return to the surface to which friction is applied, There is a problem that the service life of the roller chain is further shortened because the damage due to the friction on the surface to which the friction is applied becomes more severe.

Further, when the conventional roller chain is used, all the points that bear the force of the outer plate 91 and the inner plate 95 are concentrated on the pivotal connection point between the shaft holes 911 and 951 and the shaft rod 92. Moreover, the outer plate 91 and the inner plate 9
5 is formed as a shearing force, the outer plate 91 and the inner plate 95 of the roller chain tend to rupture from the peripheral edges of the shaft holes 911 and 951 after a certain period of use. Since the roller 92 is corroded and damaged by the outer plate 91 and the inner plate 95, there is a problem that the roller chain cannot be used.

The present invention has been made in view of the above problems, and a first object of the present invention is to provide a projecting portion between an outer plate and an inner plate so as to cover each other. Accordingly, it is an object of the present invention to provide a roller chain that can obtain a better dust-proofing effect and has an effect of keeping lubricating oil better.

A second object of the present invention is to provide a shaft pipe protruding from a peripheral edge of a shaft hole of the outer plate and / or the inner plate, so that the outer plate, the inner plate and the shaft rod of the roller chain are pivotally connected. By forming the points in face-to-face contact, the shear forces are spread out to provide a roller chain that can keep roller chain breakage low.

[0010]

To achieve the above object, a roller chain according to the present invention is as follows.

That is, the roller chain of the present invention is formed by connecting a plurality of chain units, and the chain unit is composed of two outer plates, a shaft rod, and an inner plate. Two shaft holes are penetrated through the two outer plates, and a protrusion protruding along the edge of the outer plate toward the other outer plate is provided. 2 shaft rods
A roller is fitted on a shaft rod pivotally mounted between the two outer plates, and a bush is fitted between the shaft rod and the roller. . Two shaft holes are penetrated in the inner plate, and the two shaft holes are used to pivotally connect two adjacent shaft rods, and a shaft protruding in the direction of the outer plate is provided on the periphery of the shaft hole. A tube is protruded, and the outer peripheral wall of the shaft tube of the inner plate is housed inside the protrusion.

Further, the roller chain of the present invention can be configured as follows. 1. The outer peripheral wall of the shaft tube of the inner plate is in contact with the inner peripheral wall of the protrusion of the outer plate. 2. A roller chain is formed by connecting a plurality of chain units, and the chain unit has two outer plates,
It consists of a shaft rod and an inner plate. The two outer plates are provided with two protruding portions, and each of the two protruding portions has one axial hole penetrating therethrough. The inside of the protruding portion is formed hollow, and the root portion has an annular shape. A protruding portion is provided, and a protruding portion protruding along the edge of the outer plate toward the other outer plate is provided. The shaft is pivotally connected to the shaft holes of the two outer plates, and a roller is fitted to the shaft which is pivotally mounted between the two outer plates, and a bush is provided between the shaft and the rollers. It is fitted. Two shaft holes are penetrated in the inner plate, and the two shaft holes are used to pivotally connect two adjacent shaft rods, and a shaft protruding in the direction of the outer plate is provided on the periphery of the shaft hole. A tube protrudes and the shaft tube of the inner plate is received inside the ridge of the outer plate. 3. The outer peripheral wall of the shaft tube of the inner plate is in contact with the raised portion of the outer plate and the inner peripheral wall of the projection. 4. A roller chain is formed by connecting a plurality of chain units, and the chain unit has two outer plates,
It consists of a shaft rod and an inner plate. Two shaft holes are penetrated through the two outer plates, and a shaft tube protruding along the periphery of the shaft hole toward the other outer plate is provided. The shaft rod is pivotally connected to the shaft hole and the shaft tube of the two outer plates, and a roller is fitted to the shaft rod pivotally mounted between the two outer plates, and between the shaft rod and the roller. Is fitted with a bush. Two shaft holes are penetrated in the inner plate, and the two shaft holes are used to pivotally connect two adjacent shaft rods, and a shaft protruding in the direction of the outer plate is provided on the periphery of the shaft hole. A tube protrudes, and the inner peripheral wall of the shaft tube of the inner plate is used to receive the shaft tube of the outer plate. 5. The inner peripheral wall of the shaft tube of the inner plate is in contact with the outer peripheral wall of the shaft tube of the outer plate. 6. A roller chain is formed by connecting a plurality of chain units, and the chain unit has two outer plates,
It consists of a shaft rod and an inner plate. Two shaft holes are penetrated through the two outer plates, and a shaft tube protruding along the periphery of the shaft hole toward the other outer plate is provided. The shaft rod is pivotally connected to the shaft hole and the shaft tube of the two outer plates, and a roller is fitted to the shaft rod pivotally mounted between the two outer plates, and between the shaft rod and the roller. Is fitted with a bush. Two shaft holes are penetrated in the inner plate, and the two shaft holes are used to pivotally connect two adjacent shaft rods, and the periphery of the two shaft holes is oriented in the direction of the other inner plate. The inner tube of the inner plate is used to receive the outer tube of the outer plate. 7. The inner peripheral wall of the shaft tube of the inner plate is in contact with the outer peripheral wall of the shaft tube of the outer plate. 8. A roller chain is formed by connecting a plurality of chain units, and the chain unit has two outer plates,
It consists of a shaft rod and an inner plate. The two outer plates have two shaft holes penetrating therethrough, a shaft tube protruding along the periphery of the shaft hole in the direction of the other outer plate, and extending along the edge of the outer plate. A protruding portion protruding in the same direction as the protruding direction of the shaft tube is provided. The shaft rod is pivotally connected to the shaft hole and the shaft tube of the two outer plates, and a roller is fitted to the shaft rod pivotally mounted between the two outer plates, and between the shaft rod and the roller. Is fitted with a bush. Two shaft holes are penetrated in the inner plate, and the two shaft holes are used to pivotally connect two adjacent shaft rods, and a shaft protruding in the direction of the outer plate is provided on the periphery of the shaft hole. A tube is protruded and the shaft tube of the inner plate is used to receive the shaft tube of the outer plate. 9. The inner peripheral wall of the shaft tube of the inner plate is in contact with the outer peripheral wall of the shaft tube of the outer plate. 10. The roller chain is formed by connecting a plurality of chain units, and the chain unit includes two outer plates, a shaft rod, an inner plate, and two protection plates. Two shaft holes are penetrated in the two outer plates, the shaft is pivotally connected to the shaft holes of the two outer plates, and a roller is pivotally mounted between the two outer plates. At the same time, a bush is fitted between the shaft and the roller.
Two shaft holes are penetrated in the inner plate, and the two shaft holes are used to pivotally connect two adjacent shaft rods, and a shaft protruding in the direction of the outer plate is provided on the periphery of the shaft hole. A pipe protrudes. The thickness of the two protection plates is formed so as to be equal to or greater than the height of the shaft tube of the inner plate protruding from the surface of the inner plate, and the two protection plates are provided with two through holes. The through hole is used to pivotally connect the shaft tube of the inner plate. 11. The outer peripheral wall of the shaft tube of the inner plate is in contact with the inner peripheral wall of the through hole of the protection plate.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

[0014]

Embodiment 1 FIG. 2 is an exploded perspective view of a roller chain according to Embodiment 1 of the present invention. The roller chain is formed by connecting a plurality of chain units 1 together. Each chain unit 1
Is composed of members such as two outer plates 11, a shaft rod 12, a roller 13, a bush 14, and two inner plates 15.

The two outer plates 11 constitute a main plate of the chain unit 1, and each of the outer plates 11 has two shaft holes 111 penetrating therethrough. Two shaft rods 1 with two shaft holes 111
2 are pivoted in parallel. The outer plate 11 itself is provided with a protruding portion 112 protruding in the direction of the other outer plate 11. The protruding portion 112 is formed on the protruding wall surface and formed so as to surround the entire periphery of the outer plate 11. Is preferred.

The shaft rod 12 has two outer plates 1 at both ends.
1 is pivotally connected to a shaft hole 111 penetrated through the outer plate 11, and a shaft rod 12 pivotally mounted between two outer plates 11 is provided with a roller 1.
3 is fitted, and at the same time, a bush 14 is fitted between the shaft 12 and the roller 13, so that the roller 13 can rotate smoothly on the shaft 12.

The two inner plates 15 are used to pivotally connect the two chain units 1, and each of the inner plates 15 has two shaft holes 151 penetrating therethrough. It is preferable that a shaft tube 152 projecting in the direction of 11 protrudes, and the shaft tube 152 be formed on the projecting wall surface and formed so as to surround the entire periphery of the shaft hole 151. The shaft rod 12 can be fitted into the two shaft tubes 152 and pivoted, or one end of the bush 14 can be fitted into the two shaft tubes 152. Then, the bush 14 is again drilled with two adjacent shaft rods 12 connected to the two chain units 1 respectively. Further, it is preferable that the outer peripheral wall of the shaft tube 152 is in contact with the inner peripheral wall of the projecting portion 112 of the outer plate 11.

FIG. 3 is a front view of the assembled state of the roller chain according to the first embodiment of the present invention, and a cross-sectional view of a local portion thereof. The roller chain has a plurality of chain units 1 pivoted by an inner plate 15. It is. A bush 14 and a roller 13 are fitted on the shaft rod 12, and both ends of the roller 13 are formed so as to be located between the two inner plates 15. Both ends of the bush 14 are connected to a shaft tube of the two inner plates 15. It is pivoted to 152. Further, since the outer peripheral wall of the shaft tube 152 of the inner plate 15 and the inner peripheral wall of the protrusion 112 of the outer plate 11 are fitted to each other, the outer plate 11 and the protrusion 112 are just the rollers 13, the bush 14 and the inner plate. By covering and covering the shaft hole 151 of the fifteenth embodiment, an effect of blocking is generated, so that dust in the air or floating fine particles does not enter the gap between the roller 13, the bush 14 and the shaft hole 151, and thus, Dustproof effect can be reached. Further, the lubricating oil stored in the gap between the roller 13, the bushing 14 and the shaft hole 151 is less likely to come into direct contact with air, and can prevent the lubricating oil from volatilizing, thereby obtaining a better lubricating effect. can do.

In this embodiment, the outer peripheral wall of the shaft tube 152 of the inner plate 15 and the inner peripheral wall of the projection 112 of the outer plate 11 abut each other. Since the roller chain can rotate while supporting the bushing 14, the roller chain bears the force by increasing the contact area between the outer plate 11, the shaft rod 12, and the inner plate 15 in the process of transmitting power. Are also relatively dispersed, and the shear force of the pivot point can be reduced, and the damage due to friction can be reduced, so that the service life of the roller chain can be extended.

[0020]

Second Embodiment FIG. 4 is an exploded perspective view of a roller chain according to a second embodiment of the present invention. In this embodiment, a different shape is provided for the outer plate of the first embodiment.
The roller chain is formed by connecting a plurality of chain units 10. Each chain unit 10 is composed of members such as two outer plates 16, a shaft rod 12, a roller 13, a bush 14, and two inner plates 15. Among them, the shaft rod 12, the roller 13, the bush 14, and the two inner plates 15 are the same as those in the first embodiment, and therefore, detailed description is omitted.

Each of the two outer plates 16 has two raised portions 161 projecting therefrom, and each of the raised portions 161 has a shaft hole 162 penetrating therethrough. The two shaft rods 12 are pivotally connected in parallel by the holes 162. The inside of the protruding portion 161 is formed hollow, and an annular protruding portion 163 protrudes from the root portion.
63 is preferably formed on the protruding wall surface and formed so as to surround the periphery of the shaft hole 162.

FIG. 5 is a front view and a sectional view of a part of the assembled roller chain according to a second embodiment of the present invention. The roller chain has a plurality of chain units 10 pivoted by an inner plate 15. It is. A bush 14 and a roller 13 are fitted on the shaft 12, and both ends of the roller 13 are
It is formed so as to be located between the two inner plates 15, and both ends of the bush 14 are pivotally connected to the shaft tubes 152 of the two inner plates 15. In addition, since the outer peripheral wall of the shaft tube 152 of the inner plate 15 is exactly accommodated inside the raised portion 161 of the outer plate 16, the raised portion 161 of the outer plate 16 and its protruding portion 163 are just in contact with the roller 13 and the bush 14. By completely covering the shaft hole 151 of the plate 15 to produce an effect of blocking, dust or floating fine particles in the air do not enter the gap between the roller 13, the bush 14 and the shaft hole 151. As such, the dustproof effect can be reached. Further, the roller 13, the bush 14 and the shaft hole 15
The lubricating oil stored in the first gap is less likely to come into direct contact with the air and can prevent the lubricating oil from volatilizing, so that a better lubricating effect can be obtained.

In this embodiment, the inner plate 15
Outer wall of shaft tube 152 and raised portion 161 of outer plate 16
And the inner peripheral wall of the protruding portion 163 thereof, and the inner plate 15 can rotate while supporting the shaft rod 12 or the bushing 14 by the shaft tube 152. In the process, the contact area of the outer plate 16, the shaft rod 12, and the inner plate 15 with each other is increased, so that the points that bear the force are relatively dispersed, and the shear force that the pivot point bears is reduced. And the frictional damage can be reduced, so that the service life of the roller chain can be extended.

[0024]

Third Embodiment FIG. 6 is an exploded perspective view of a roller chain according to a third embodiment of the present invention. The roller chain is formed by connecting a plurality of chain units 2 together. Each chain unit 2
Is composed of members such as two outer plates 21, a shaft 22, a roller 23, a bush 24, and two inner plates 25.

The two outer plates 21 constitute a main plate of the chain unit 2, and each of the outer plates 21 has two shaft holes 211 penetrating therethrough. Two shaft rods 2 by two shaft holes 211
2 are pivoted in parallel. The outer plate 21 itself is formed along the periphery of the two shaft holes 211 along the other outer plate 21.
A shaft tube 212 protruding in the direction of is protruded, and the shaft tube 212 can support the rotation of the shaft rod 22, and
Further, it can be formed to have an effect of covering.

The shaft 22 has two outer plates 2 at both ends.
1 is pivotally attached to the inner peripheral wall of a shaft hole 211 and a shaft tube 212 having a covering effect.
Since the bush 24 is fitted between the rollers 3, the roller 23 can rotate smoothly on the shaft 22.

The two inner plates 25 are used to pivotally connect the two chain units 2, and each of the inner plates 25 has two shaft holes 251 penetrating therethrough. It is preferable that a shaft tube 252 protruding in the direction of 21 be provided, and the shaft tube 252 be formed on the protruding wall surface and formed so as to surround the entire periphery of the shaft hole 251. The shaft tube 212 of the outer plate 21 and one end of the bush 24 can be fitted into the two shaft tubes 252. Then, the adjacent two shaft rods 22 connected to the two chain units 2 are drilled in the bush 24 and the shaft tube 212 again. Further, it is preferable that the inner peripheral wall of the shaft tube 252 of the inner plate 25 is in contact with the outer peripheral wall of the shaft tube 212 of the outer plate 21.

FIG. 7 is a front view and a sectional view of a part of a roller chain assembled according to a third embodiment of the present invention. The roller chain is formed by pivotally connecting a plurality of chain units 2 by an inner plate 25. It is. A bush 24 and a roller 23 are fitted on the shaft 22, and both ends of the roller 23 are formed so as to be located between the two inner plates 25, and both ends of the bush 24 are the shaft pipes of the two inner plates 25. 252 is pivoted. Further, since the shaft tubes 212 and 252 of the outer plate 21 and the inner plate 25 are formed so as to fit each other, the shaft tubes 212 and 2 of the outer plate 21 and the inner plate 25 are formed.
52 is the roller 23, bush 24 and inner plate 2
5, the dust in the air or the floating fine particles do not enter the gap between the roller 23, the bush 24 and the shaft hole 251. Dustproof effect can be reached. Further, the lubricating oil stored in the gap between the roller 23, the bushing 24 and the shaft hole 251 is hard to come into direct contact with the air, so that the lubricating oil can be prevented from volatilizing, so that a better lubricating effect is obtained. can do.

In this embodiment, the inner peripheral wall of the shaft tube 252 of the inner plate 25 and the outer peripheral wall of the shaft tube 212 of the outer plate 21 can be in contact with each other. 14, the roller chain can rotate while supporting the shaft 22 by the outer plate 21 and the shaft 2 in the process of transmitting power.
As the area of contact between the inner plate 2 and the inner plate 25 increases, the points that bear the force are also relatively dispersed, and the shear force that the pivot point bears can be reduced, and the damage due to friction is reduced. Therefore, the service life of the roller chain can be extended.

[0030]

Embodiment 4 FIG. 8 is an exploded perspective view of a roller chain according to Embodiment 4 of the present invention. The roller chain is formed by connecting a plurality of chain units 3. Each chain unit 3
Is composed of members such as two outer plates 31, a shaft rod 32, a roller 33, a bush 34, and two inner plates 35.

Two shaft holes 311 are respectively penetrated in the two outer plates 31, and two shaft rods 32 are parallelly pivoted by the corresponding two shaft holes 311 of the two outer plates 31. Be worn. The outer plate 31 itself has two shaft holes 3
A shaft tube 312 protruding in the direction of the other outer plate 31 is protruded along the periphery of the shaft 11, and the shaft tube 312 can support the rotation of the shaft rod 32, and furthermore, the shaft tube 312 is attached to the outer plate 31 itself. Can be formed to have a covering effect.

The shaft rod 32 has two outer plates 3 at both ends.
A roller 33 is fitted to the shaft rod 32 and a bush 34 is fitted between the shaft rod 32 and the roller 33. Therefore, the roller 33 can smoothly rotate on the shaft 32.

The two inner plates 35 are used for pivotally connecting the two chain units 3, and each of the inner plates 35 has two shaft holes 351 penetrating therethrough. It is preferable that a shaft tube 352 protruding in the direction of the inner plate 35 is provided, and the shaft tube 352 be formed on the protruded wall surface and formed so as to surround the entire periphery of the shaft hole 351. The shaft tubes 3 of the outer plate 31 are attached to the two shaft tubes 352.
12 and one end of the bush 34 can be fitted (one end of the bush 34 need not be fitted). Then, the shaft rod 32 connected to the two chain units 3 is drilled again on the inner peripheral wall of the bush 34 and the shaft tube 312. Further, it is preferable that the inner peripheral wall of the shaft tube 352 of the inner plate 35 is in contact with the outer peripheral wall of the shaft tube 312 of the outer plate 31.

FIG. 9 is a front view and a sectional view of a part of a roller chain assembled according to a fourth embodiment of the present invention. The roller chain is formed by pivotally connecting a plurality of chain units 3 by an inner plate 35. It is. A bush 34 and a roller 33 are fitted on the shaft 32, and both ends of the roller 33 are formed so as to be located between the two inner plates 35, and both ends of the bush 34 are the shaft pipes of the two inner plates 35. 352. Further, since the shaft tube 312 of the outer plate 31 is formed so as to fit with the shaft tube 352 of the inner plate 35, the outer plate 31 covers the shaft hole 351 and the bush 34 of the inner plate 35, and The shaft tube 352 of the inner plate 35 covers the separation line between the roller 33 and the bush 34 to produce a blocking effect, so that dust or floating minute particles in the air can be removed from the roller 33, the bush 34 and the shaft hole 351. Thus, the dustproof effect can be achieved without entering the gap. Further, the lubricating oil stored in the gap between the roller 33, the bush 34 and the shaft hole 351 is less likely to come into direct contact with the air, and can prevent the lubricating oil from volatilizing, thereby obtaining a better lubricating effect. can do.

In this embodiment, the inner peripheral wall of the shaft tube 352 of the inner plate 35 and the outer peripheral wall of the shaft tube 312 of the outer plate 31 can be in contact with each other. The roller chain can be rotated by supporting the shaft rod 32 with the outer plate 31 and the shaft rod 3 in the process of transmitting power.
As the area of contact between the inner plate 2 and the inner plate 35 increases, the points that bear the force are relatively dispersed, and the shear force that the pivot point bears can be reduced, and the damage due to friction is reduced. Therefore, the service life of the roller chain can be extended.

[0036]

Fifth Embodiment FIG. 10 is an exploded perspective view of a roller chain according to a fifth embodiment of the present invention. The roller chain is formed by connecting a plurality of chain units 4. Each chain unit 4 is composed of members such as two outer plates 41, a shaft rod 42, a roller 43, a bush 44, and two inner plates 45.

Two shaft holes 411 are respectively penetrated through the two outer plates 41, and two shaft rods 42 are parallelly pivoted by the corresponding two shaft holes 411 of the two outer plates 41. Be worn. The outer plate 41 itself is provided with a projection 412 and a shaft tube 413 projecting in the direction of the other outer plate 41, and the projection 412 is formed on the projected wall surface and surrounds the entire periphery of the outer plate 41. It is more preferable to form it. The shaft tube 413 is formed so as to protrude from the periphery of the two shaft holes 411 in the direction of the other outer plate 41, and the shaft tube 412 can support the rotation of the shaft rod 42.

The shaft rod 42 has two outer plates 4 at both ends.
A roller 43 is fitted to the shaft rod 42, and a bush 44 is fitted between the shaft rod 42 and the roller 43. 4
2 can smoothly rotate.

The two inner plates 45 are used to pivotally connect the two chain units 4, and each of the inner plates 45 has two shaft holes 451 penetrating therethrough. It is preferable that a shaft tube 452 protruding in the direction of 41 be provided, and the shaft tube 452 be formed on the protruding wall surface and formed so as to surround the entire periphery of the shaft hole 451. The shaft tube 413 of the outer plate 41 and one edge of the bush 44 can be fitted into the two shaft tubes 452 (both edges of the bush 44 need not be fitted). Then, again, the inner peripheral wall of the bush 44 and the shaft tube 413
The shaft rod 42 connected to the chain units 4 is drilled. Further, it is preferable that the inner peripheral wall of the shaft tube 452 of the inner plate 45 is in contact with the outer peripheral wall of the shaft tube 413 of the outer plate 41.

FIG. 11 is a front view and a sectional view of a local portion of a roller chain according to a fifth embodiment of the present invention in an assembled state.
The roller chain is formed by pivotally connecting a plurality of chain units 4 by an inner plate 45. A bush 44 and a roller 43 are fitted on the shaft 42, and both ends of the roller 43 are
It is formed so as to be located between the inner plates 45, and both ends of the bush 44 are pivotally connected to the shaft tubes 452 of the two inner plates 45. In addition, since the inner peripheral wall of the shaft tube 452 of the inner plate 45 is formed so as to fit with the outer peripheral wall of the shaft tube 413 of the outer plate 41, the projecting portion 412 of the outer plate 41 is formed between the bush 44 and the inner plate. 45 shaft holes 4
Since the effect of blocking is generated by covering 51, dust in the air or floating fine particles does not enter the gap between the roller 43, the bush 44 and the shaft hole 451. Can be reached. Further, the lubricating oil stored in the gap between the roller 43, the bush 44 and the shaft hole 451 becomes less likely to come into direct contact with air, and the lubricating oil can be prevented from being volatilized, thereby obtaining a better lubricating effect. can do.

In this embodiment, the inner peripheral wall of the shaft tube 452 of the inner plate 45 and the outer peripheral wall of the shaft tube 413 of the outer plate 41 can be in contact with each other. Since the shaft 42 can be supported and rotated by the shaft 44, the roller chain is driven by the outer plate 41 and the shaft 4 in the process of transmitting power.
By increasing the area of contact between the inner plate 45 and the inner plate 45, the points that bear the force are also relatively dispersed, and the shear force that the pivot point bears can be reduced, and the damage due to friction is reduced. Therefore, the service life of the roller chain can be extended.

[0042]

Sixth Embodiment FIG. 12 is an exploded perspective view of a roller chain according to a sixth embodiment of the present invention. The roller chain is formed by connecting a plurality of chain units 5. Each chain unit 5 includes two outer plates 51, a shaft rod 52, a roller 53, a bush 54, two inner plates 55, and a protection plate 5.
6 and the like.

Two shaft holes 511 are respectively penetrated through the two outer plates 51, and two shaft rods 52 are parallelly pivoted by the corresponding two shaft holes 511 of the two outer plates 51. Be worn.

The shaft rod 52 has two outer plates 5 at both ends.
A roller 53 is fitted to the shaft rod 52, and a bush 54 is fitted between the shaft rod 52 and the roller 53. 5
2 can smoothly rotate.

The two inner plates 55 are used to pivotally connect the two chain units 5, and each of the inner plates 55 has two shaft holes 551 penetrating therethrough. It is preferable that a shaft tube 552 protruding in the direction of 51 is provided, and the shaft tube 552 is formed on the protruding wall surface and formed so as to surround the entire periphery of the shaft hole 551. One edge of the shaft rod 52 can be fitted into the two shaft tubes 552, or one edge of the bushing 54 can be fitted into the shaft tube 552 as shown in the figure, and then the bushing 5 can be fitted again.
4 is provided with a shaft rod 52.

The protection plate 56 is fitted between the outer plate 51 and the inner plate 55, and two through holes 561 are formed in the protection plate 56. The through hole 561 is formed with a shaft tube 552 of the inner plate 55. The thickness of the protection plate 56 itself is formed to be substantially the same as the height of the shaft tube 552 protruding from the surface of the inner plate 55.

FIG. 13 is a front view and a sectional view of a local portion of the assembled roller chain according to the sixth embodiment of the present invention.
The roller chain is formed by pivotally connecting a plurality of chain units 5 with an inner plate 55. A bush 54 and a roller 53 are fitted on the shaft 52, and both ends of the roller 53 are
It is formed so as to be located between the inner plates 55, and both ends of the bush 54 are pivotally connected to the shaft tubes 552 of the two inner plates 55. A protection plate 56 is fitted between the outer plate 51 and the inner plate 55, and the protection plate 56
Is inserted into the shaft tube 552 of the inner plate 55 through the through hole 561, so that the outer plate 51 and the protection plate 56 just cover the bush 54 and the shaft hole 551 of the inner plate 55, so that an obstruction effect is generated. The dust or floating fine particles do not enter the gap between the roller 53, the bush 54 and the shaft hole 551, and thus can achieve the dustproof effect. Further, the lubricating oil stored in the gap between the roller 53, the bush 54 and the shaft hole 551 is hardly in direct contact with the air, and the lubricating oil can be prevented from being volatilized. can do.

In this embodiment, the inner plate 55
Outer peripheral wall of shaft tube 552 and through hole 56 of protection plate 56
1 can be in contact with each other, and further, the shaft hole 511 of the outer plate 51 and the shaft tube 5 of the inner plate 55
Since the shaft 52 can be supported and rotated by the bush 52 or the bush 54, the roller chain has an area where the outer plate 51, the shaft 52, the inner plate 55, and the protection plate 56 contact each other in the process of transmitting power. As the number of points increases, the points that bear the force are relatively dispersed, and the shear force that the pivot point bears can be reduced, and the damage due to friction can be reduced. Can be extended.

[0049]

According to the roller chain described in the first aspect of the present invention, the outer plate is provided with a projection for covering the shaft tube of the inner plate. According to the roller chain described in claim 3 of the present invention, the outer plate is provided with a raised portion and a projected portion for covering the shaft tube of the inner plate. Claim 5 of the present invention
According to the roller chain described in No. 7, a shaft pipe projects from the peripheral edge of the shaft hole of the outer plate, and a protrusion is formed in the shaft pipe. It is fitted into the inner peripheral wall of the tube. According to the roller chain according to the ninth aspect of the present invention, a shaft pipe projects from the periphery of the shaft hole of the outer plate, and a projecting portion projects around the outer plate. The shaft tube of the plate is fitted between the outer peripheral wall of the shaft tube of the outer plate and the protrusion around the outer plate. According to the roller chain described in claim 11 of the present invention, the protection plate is fitted between the inner plate and the outer plate, and the thickness of the protection plate is such that the shaft tube protrudes from the surface of the inner plate. Is formed to be the same as or higher than the height.

As described above, the pivot points of the shaft rods of each chain unit and the inner plate, or the pivot points of the rollers, the bushings fitted to the rods and the inner plate, and the inner plates thereof are all set. Due to the good covering effect, all the protrusions, shaft tubes or protective plates of each outer plate can prevent the entry of dust or fine particles floating in the air, and Friction damage phenomena caused by dust or floating fine particles attached to the pivot point can be avoided. In addition, since the lubricating oil stored at the pivot point is difficult to come into direct contact with air, the lubricating oil is less likely to volatilize, and no dust or floating fine particles are accumulated. Has the advantage that it can rotate more smoothly in the process of transmitting power.

According to the roller chain described in claim 2 of the present invention, the outer peripheral wall of the shaft tube of the inner plate is formed so as to abut the inner peripheral wall of the projecting portion of the outer plate. According to the roller chain described in claim 4 of the present invention, the shaft tube of the inner plate is formed so as to abut the raised portion of the outer plate and the inner peripheral wall of the projecting portion. According to the roller chain described in claims 6, 8 and 10 of the present invention, the outer peripheral wall of the shaft tube of the outer plate is formed so as to abut the inner peripheral wall of the shaft tube of the inner plate. Further, according to the roller chain described in claim 12 of the present invention, the outer peripheral wall of the shaft tube of the inner plate is formed so as to abut the peripheral wall of the through hole of the protection plate. As described above, since the pivot point of the outer plate, the inner plate and the shaft rod of each chain unit is formed at the surface contact, the area of contact between them increases, so that the point responsible for the force is also relatively formed. The advantage is that the service life of the roller chain can be prolonged, since it is possible to disperse and reduce the shearing force that the pivot point bears and to reduce the damage due to friction.

The present invention may be embodied in other ways without departing from its spirit and essential characteristics. Accordingly, the preferred embodiments described herein are illustrative and not limiting.

[Brief description of the drawings]

FIG. 1 is a front view and a sectional view of a local portion of a conventional roller chain.

FIG. 2 is an exploded perspective view of the roller chain according to the first embodiment of the present invention.

FIG. 3 is a front view and a cross-sectional view of a local portion of the roller chain according to the first embodiment of the present invention in an assembled state.

FIG. 4 is an exploded perspective view of a roller chain according to a second embodiment of the present invention.

FIG. 5 is a front view and a sectional view of a local part of a roller chain according to a second embodiment of the present invention in an assembled state.

FIG. 6 is an exploded perspective view of a roller chain according to a third embodiment of the present invention.

FIGS. 7A and 7B are a front view and a partial cross-sectional view of a roller chain according to a third embodiment of the present invention in an assembled state.

FIG. 8 is an exploded perspective view of a roller chain according to a fourth embodiment of the present invention.

FIG. 9 is a front view and a cross-sectional view of a local portion of a roller chain according to a fourth embodiment of the present invention in an assembled state.

FIG. 10 is an exploded perspective view of a roller chain according to a fifth embodiment of the present invention.

FIG. 11 is a front view and a cross-sectional view of a local part of an assembled state of a roller chain according to a fifth embodiment of the present invention.

FIG. 12 is an exploded perspective view of a roller chain according to a sixth embodiment of the present invention.

FIG. 13 is a front view and a sectional view of a local part of a roller chain according to a sixth embodiment of the present invention in an assembled state.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Chain unit 10 Chain unit 11 Outer plate 111 Shaft hole 112 Protrusion part 12 Shaft rod 13 Roller 14 Bush 15 Inner plate 151 Shaft hole 152 Shaft tube 16 Outer plate 161 Raised part 162 Shaft hole 163 Projection part 2 Chain unit 21 Outer plate 211 Shaft hole 212 Shaft tube 22 Shaft rod 23 Roller 24 Bush 25 Inner plate 251 Shaft hole 252 Shaft tube 3 Chain unit 31 Outer plate 311 Shaft hole 312 Shaft tube 32 Shaft rod 33 Roller 34 Bush 35 Inner plate 351 Shaft hole 352 Shaft tube 4 Chain unit 41 Outer plate 411 Shaft hole 412 Projection 413 Shaft tube 42 Shaft rod 43 Roller 44 Bush 45 Inner plate 451 Shaft hole 452 Shaft tube 5 Chain unit 51 Outer plate 511 Shaft hole 52 Shaft rod 53 Roller 54 Bush 55 Inner play 551 shaft hole 552 shaft tube 56 protective plate 561 through hole

Claims (12)

[Claims] 1. A roller chain formed by connecting a plurality of chain units (1), wherein the chain unit (1) is 2
Two outer plates (11), comprising two outer plates (11), a shaft rod (12) and an inner plate (15).
Has two shaft holes (111) penetrating therethrough and the other outer plate (11) along the edge of the outer plate (11).
The protrusion (112) protruding in the direction of (1) protrudes, and the shaft rod (12) is provided with shaft holes (111) of the two outer plates (11).
A roller (13) is fitted to a shaft (12) pivotally mounted between the two outer plates (11), and a roller (13) is fitted between the shaft (12) and the roller (13). Has a bush (1
4) is fitted, two shaft holes (151) are pierced through the inner plate (15), and the two shaft holes (151) are pivotally connected to two adjacent shaft rods (12). A shaft tube (152) protruding in the direction of the outer plate (11) protrudes from the periphery of the shaft hole (151), and an outer peripheral wall of the shaft tube (151) of the inner plate (11) protrudes. Department (112)
A roller chain formed to be housed inside a roller chain. 2. The outer peripheral wall of the shaft tube (151) of the inner plate (15) is formed so as to abut the inner peripheral wall of the protrusion (112) of the outer plate (11). The described roller chain. 3. A roller chain formed by connecting a plurality of chain units (10), wherein the chain unit (10) is provided.
Is composed of two outer plates (16), a shaft rod (12) and an inner plate (15), and comprises two outer plates (1).
6), two protrusions (161) are protruded, and one shaft hole (162) is penetrated in each of the two protrusions (161), and the inside of the protrusion (161) is formed hollow. At the same time, an annular protruding portion (163) protrudes from the root, and the other outer plate (1) extends along the edge of the outer plate (11).
A projection (112) projecting in the direction of 1) is protruded, and a shaft rod (12) is provided with a shaft hole (11) of two outer plates (11).
A roller (13) is fitted to a shaft rod (12) pivotally mounted on 1) and pivotally mounted between two outer plates (11), and the shaft rod (12) and the roller (13). A bush (14) is fitted between the two, and two shaft holes (151) penetrate through the inner plate (15), and the two shaft holes (151) are respectively adjacent to two shaft rods (151). A shaft tube (152) protruding in the direction of the outer plate (11) protrudes from the periphery of the shaft hole (151), and a shaft tube (151) of the inner plate (11). ) Is formed so as to be accommodated inside the raised portion (161) of the outer plate (16). 4. The outer peripheral wall of the shaft tube (151) of the inner plate (15) is formed so as to abut the raised portion (161) of the outer plate (16) and the inner peripheral wall of the protruding portion (163). The roller chain according to claim 3, characterized in that: 5. A roller chain formed by connecting a plurality of chain units (2), wherein the chain unit (2) is 2
The outer plate (21), the shaft rod (22) and the inner plate (25), and two outer plates (21).
Has two shaft holes (211) penetrating therethrough, and a shaft tube (212) protruding along the periphery of the shaft hole (211) in the direction of the other outer plate (21). (2
2) is connected to a shaft hole (211) of two outer plates (21) and a shaft tube (212), and a shaft rod (22) pivotally mounted between the two outer plates (21) is provided. A roller (23) is fitted, and a bush (24) is fitted between the shaft rod (22) and the roller (23).
Two shaft holes (251) are penetrated and two shaft holes (251)
Are used to pivotally connect two adjacent shaft rods (22), and the outer plate (2) is provided around the periphery of the shaft hole (251).
A shaft tube (252) protruding in the direction of 1) is protruded, and the inner peripheral wall of the shaft tube (252) of the inner plate (25) is used to accommodate the shaft tube (212) of the outer plate (21). A roller chain characterized by the above. 6. The inner peripheral wall of the shaft tube (252) of the inner plate (25) is formed to be in contact with the outer peripheral wall of the shaft tube (212) of the outer plate (21).
The described roller chain. 7. A roller chain formed by connecting a plurality of chain units (3), wherein the chain unit (3) is 2
The outer plate (31), the shaft rod (32) and the inner plate (35), and two outer plates (31).
Has two shaft holes (311) penetrating therethrough, and a shaft tube (312) protruding along the periphery of the shaft hole (311) in the direction of the other outer plate (31). (3
2) is connected to a shaft hole (311) and a shaft tube (312) of two outer plates (31), and a shaft rod (32) pivotally mounted between the two outer plates (31) is provided. A roller (33) is fitted, and a bush (34) is fitted between the shaft rod (32) and the roller (33).
Two shaft holes (351) are penetrated and two shaft holes (351)
Is used for pivoting two adjacent shaft rods (32), and a shaft tube (352) protruding in the direction of the other inner plate (35) is provided around the periphery of the two shaft holes (351). A roller chain, which is protruded, and wherein an inner peripheral wall of a shaft tube (352) of an inner plate (35) is used to receive a shaft tube (312) of an outer plate (31). 8. The inner peripheral wall of the shaft tube (352) of the inner plate (35) is formed so as to abut the outer peripheral wall of the shaft tube (312) of the outer plate (31).
The described roller chain. 9. A roller chain formed by connecting a plurality of chain units (4), wherein the chain unit (4) is
The outer plate (41), the shaft rod (42) and the inner plate (45), and two outer plates (41).
, Two shaft holes (411) are penetrated, and a shaft tube (413) protruding along the periphery of the shaft hole (411) toward the other outer plate (41) is provided. A protruding portion (412) protruding along the edge of the outer plate (41) in the same direction as the protruding direction of the shaft tube (413) protrudes, and the shaft rod (42) is provided between the two outer plates (41). A roller (43) is fitted on a shaft rod (42) pivotally connected to the shaft hole (411) and the shaft tube (412), and is pivotally mounted between the two outer plates (41). A bush (44) is fitted between the rod (42) and the roller (43), two shaft holes (451) are penetrated in the inner plate (45), and the two shaft holes (451) are Two adjacent shaft rods (4
2) is used for pivotal connection, and a shaft tube (452) protruding in the direction of the outer plate (41) is provided around the periphery of the shaft hole (451).
And a shaft tube (452) of the inner plate (45) is used to receive the shaft tube (413) of the outer plate (41). 10. The shaft tube (452) of the inner plate (45).
The roller chain according to claim 9, wherein an inner peripheral wall of the roller chain is formed so as to abut an outer peripheral wall of the shaft tube (413) of the outer plate (41). 11. A roller chain formed by connecting a plurality of chain units (5), wherein the chain unit (5) includes two outer plates (51), a shaft rod (52), and an inner plate (55). And two protection plates (56), and two outer plates (51) have two shaft holes (51).
1) is pierced, and the rod (52) has two outer plates (5).
The shaft rod (52) pivotally attached to the shaft hole (511) of 1) and pivoted between the two outer plates (51) has rollers (5).
3) is fitted, and the shaft rod (52) and the roller (5) are fitted.
A bush (54) is fitted between 3), two shaft holes (551) are pierced in the inner plate (55), and the two shaft holes (551) are respectively adjacent to two shaft holes. Stick (52)
A shaft tube (552) protruding in the direction of the outer plate (51) is provided on the periphery of the shaft hole (551), and the thickness of the two protection plates (56) is reduced. The shaft tube (552) of the inner plate (55) is formed so as to have the same height as or larger than the height protruding from the surface of the inner plate (55), and the two protection plates (56) have two through holes ( 561), wherein the through hole (561) is used to pivotally connect the shaft tube (552) of the inner plate (55). 12. The shaft tube (552) of the inner plate (55).
The roller chain according to claim 11, wherein an outer peripheral wall of the roller chain is formed so as to contact an inner peripheral wall of the through hole (561) of the protection plate (56).