JP5975139B1 - Profile plate chain - Google Patents

Abstract

Disclosed is a deformed plate chain that can prevent vibrations and damage due to interference between an inner plate and an outer plate, and local elongation, and can realize stable running. An inner plate and an outer plate each have a pair of disc parts having a first through hole or a second through hole formed in the center, and a first through hole. Alternatively, the first connecting portions 10 and 15 that connect the disc portion on one side of the center line C that connects the centers of the second through holes and the outer peripheral edge connects the outer peripheral edge of the disc portion with a straight line in the tangential direction; In addition, the disk portion is connected to the other side of the center line C, and the outer peripheral edge includes second connecting portions 11 and 15 that connect the outer peripheral edge of the disk portion with a concave curve, and the inner plate 4 and the outer plate 6. One of them is arranged with the first connecting parts 10 and 15 positioned outside the ring, and the other is arranged with the first connecting parts 15 and 10 positioned inside the ring. [Selection] Figure 3

Description

  The present invention relates to a deformed plate chain that is used to transmit power by being spanned between sprockets.

Chains for transmitting the rotation of a drive source such as a motor to devices are used in various transport devices and industrial devices.
FIG. 5 shows a conventional chain 20 of this type, and reference numeral 21 in the figure denotes an inner link unit. The inner link unit 21 includes a roller 22 rotatably mounted on the outer periphery of a pair of cylindrical bushes arranged in parallel, and an inner plate 23 fixed and integrated at both ends of the bush. It is.

  A plurality of inner link units 21 are arranged in the extending direction of the chain, and an outer plate 25 for connecting adjacent inner link units 21 is arranged on the outer surface side of the inner plate 23. .

  Then, the pin 24 is loosely inserted in the width direction of the chain into the inner plate 23 and the bush of the inner link unit 21, and both ends of the pin 24 are inserted and fixed to the outer plate 25. An annular chain is formed.

  Here, the inner plate 23 includes a pair of disk portions 26 each having two through holes 23a through which a bush is inserted, and a connecting portion 27 that connects the outer edges of the disk portions 26 with a concave curve. Are integrally formed with the bushes by press-fitting the bushes into the two through-holes 23a by interference fit.

  The outer plate 25 includes a pair of disk portions 28 having two through holes 25a through which the pins 24 are inserted in the center, and a connecting portion 29 that connects the outer edges of the disk portions 28 with a concave curve. Are integrally formed with the pin 24 by crimping the ends of the pins 24 inserted into the two through holes 25a. Has been.

  As shown in FIG. 6, the chain 20 having the above-described configuration includes, for example, a drive-side sprocket 32 integrated with an output shaft 31 such as a motor, and a driven side fixed to an input shaft 33 of equipment to which rotation should be transmitted. It is arranged between the sprockets 34, and the teeth of the sprockets 32, 34 are inserted between the rollers 22 and spanned between the two sprockets 32, 34 for use. The following Patent Document 1 also discloses a chain having a similar configuration.

Japanese Patent Laid-Open No. 2008-240062

  By the way, generally, when the chain 20 is hung between the sprockets 32 and 34, some slack is formed in the chain 20. In addition, during use, wear caused by sliding between the bush and the pin 24 increases the length of the chain 20 over time, which also increases the slack.

  For this reason, when the chain 20 is used, in order to prevent the running of the chain 20 from becoming unstable due to excessive slack, the chain 20 is usually guided between the sprockets 32 and 34 from below. Sliders 35 and 36 are arranged.

  Incidentally, the slider 35 is disposed on the inner side of the chain 20 to guide the portion 20a running on the upper side between the sprockets 32, 34 of the chain 20 from below, and the slider 36 runs on the lower side between the sprockets 32, 34. In order to guide the portion 20b to be guided from below, it is arranged outside the chain 20.

  However, when such sliders 35 and 36 are provided, the portion of the inner plate 23 that contacts the sliders 35 and 36 is an arc-shaped outer peripheral edge of the disk portion 26 and is close to point contact, and therefore impact. It is easy to receive. Thereby, vibration, damage, and local elongation are likely to occur. In addition to this, a phenomenon occurs in which the specific inner plate 23 collides with the sliders 35 and 36 due to fluctuations in the rotational speed of the drive-side sprocket 32 or the like. For this reason, there has been a problem that local wear or damage is likely to occur in the disk portion 26 of the inner plate 23.

  The present invention has been made in view of the above circumstances, and is capable of realizing stable running by preventing vibration and damage due to inner plate interference and the occurrence of local elongation, and further achieving further weight reduction. It is an object of the present invention to provide a deformed plate chain that can be used.

In order to solve the above problems, the invention according to claim 1 is directed to the through holes of the pair of inner plates disposed opposite to each other with the two first through holes formed, respectively, in a direction perpendicular to the inner plate. A plurality of inner link units integrated by inserting and fixing the end portions of the two bushes arranged, pins inserted into the bushes of these inner link units, and the adjacent inner links And an outer plate formed with two second through holes through which end portions of the pins are inserted and disposed across the outer surface side of the inner plate of the unit, the second penetration of the outer plate Both ends of the pin protruding from the bush of the inner link unit adjacent to the hole are connected by being inserted and fixed. And the outer plate includes a pair of disk portions each having the first through hole or the second through hole formed in a central portion, and the center of the first through hole or the second through hole. A first connecting portion that connects the disk portions on one side of the center line to be connected and an outer peripheral edge connects the outer peripheral edge of the disk portion with a straight line in a tangential direction, and the circle on the other side of the center line. A second connecting portion for connecting the plate portion and an outer peripheral edge connecting the outer peripheral edge of the disc portion with a concave curve, and one of the inner plate and the outer plate connects the first connecting portion with the first connecting portion. While being positioned outside the ring, the other is characterized in that the first connecting portion is positioned inside the ring.

  The invention described in claim 2 is characterized in that, in the invention described in claim 1, a hole for reducing the weight is formed in the first connecting portion of the outer plate. To do.

  Furthermore, the invention according to claim 3 is the invention according to claim 1 or 2, wherein between the surface of the first connecting portion of the inner plate and the outer plate and the planar outer peripheral surface, The first chamfering process is performed.

  The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the inner surface is an opposing surface, and the outer surface and the outer periphery of the disk portion and the second connecting portion. A second chamfering process is performed between the surfaces.

  In the invention according to any one of claims 1 to 4, one center line connecting the centers of the first through hole or the second through hole formed in the pair of disk portions of the inner plate and the outer plate. The disk portion is connected to the side, and the outer periphery forms a first connection portion that connects the outer periphery of the disk portion with a straight line in the tangential direction, and one of the inner plate and the outer plate is connected to the first plate. The other connecting portion is arranged so that the first connecting portion is located inside the annular shape, so that one connecting portion is located outside the annular chain.

  For this reason, in order to prevent the chain running between the sprockets from dripping excessively, a slider that guides the upper part of the chain running between the sprockets from below is placed inside the annular chain, and the lower side between the sprockets. When the slider that guides the portion that travels from the lower side is arranged outside the annular chain, the linear flat outer peripheral surface of the first connecting portion of the inner plate or the outer plate of any of the sliders You can guide with.

As a result, the contact between the inner plate and outer plate and the slider becomes a surface contact, so that vibration and damage on the inner plate and outer plate, and the occurrence of local elongation can be prevented, and stable running can be realized. Can do.
Further, on the other side of the center line connecting the center of the first through hole or the second through hole of the inner plate and the outer plate, the outer peripheral edge is recessed between the circular disk parts. Since the 2nd connection part connected with a curve is formed, weight reduction of an inner plate and an outer plate can also be realized.

  Furthermore, since the pin inserted into the second through hole of the outer plate has a smaller diameter than the bush inserted into the first through hole of the inner plate, the inner diameter of the second through hole is the first through hole. The diameter is smaller than the inner diameter of the hole. As a result, if the hole is formed in the first connecting portion of the outer plate as in the invention described in claim 2, it is possible to further reduce the weight while ensuring the same strength as the inner plate. Can do.

  In the present invention, since the contact between the inner plate and the outer plate and the slider is a surface contact, local wear can be prevented, but the frictional force generated between the two is increased. Therefore, as in the invention described in claim 3, if the first chamfering process is performed between the surface of the first connecting portion of the inner plate and the outer plate and the linear outer peripheral surface, the slider and the surface contact are made. The frictional force can be reduced by reducing the contact area of the outer peripheral surface.

  In addition, according to the invention described in claim 4, a second chamfering process is performed between the outer surfaces of the disk portion and the second connecting portion, which are opposed surfaces of the pair of inner plates. Therefore, it is possible to reduce the frictional force generated between the side surfaces of the sprocket teeth meshed between the inner plates.

It is a perspective view of the important section showing one embodiment of the present invention. FIG. 2 is an exploded perspective view of FIG. 1. The outer plate of FIG. 1 is shown, (a) is a front view, (b) is a side view. FIG. 2 shows the inner plate of FIG. 1, wherein (a) is a front view and (b) is a side view. It is a front view which shows the conventional chain. FIG. 6 is a view showing the state of use in which the chain of FIG.

1 to 4 show an embodiment of a deformed plate chain according to the present invention, and reference numeral 1 in the figure denotes an inner link unit.
The inner link unit 1 includes a pair of inner plates in which a roller 3 is rotatably mounted on the outer periphery of two cylindrical bushes 2 arranged in parallel, and ends of the bushes 2 are arranged to face each other. 4 through-holes (first through-holes) 5 and integrated.

  A plurality of the inner link units 1 are arranged in the extending direction of the chain, and the inner link units 1 are arranged on the outer surface side of the inner plate 4 across the inner play 4 of the adjacent inner link unit 1. An outer plate 6 for connection is arranged.

  Then, a pin 7 is loosely inserted in the inner play 4 and the bush 2 of the inner link unit 1 in the width direction of the chain, and both ends of the pin 7 are through holes (second second holes) formed in the outer plate 6. An annular chain is formed by being connected by being inserted into and fixed to the (through-hole) 8.

Here, as shown in FIG. 3, the outer plate 6 is a center connecting a pair of disk portions 9 each having a second through-hole 8 in the center and the centers of the second through-holes 8. A first connecting portion 10 that connects the disc portion 9 on one side (the lower side in the figure) of the line C _{2 and} the outer peripheral edge 10 a connects the outer peripheral edge 9 a of the disc portion 9 with a straight line in the tangential direction, and the center The disk portion 9 is connected to the other side of the line C ₂ (upper side in the drawing), and the outer peripheral edge 11 is formed by the second connecting portion 11 that connects the outer peripheral edge 9a of the disk portion 9 with a concave curve. .

In the outer plate 6, an elongated hole-like hole 12 extending from the first connecting part 10 to a part of the disk part 9 in the horizontal direction in the drawing is formed in the first connecting part 10. ing.
Further, a first chamfering process 13 having a chamfering angle of about 30 ° is performed between the surface of the first connecting portion 10 and the flat outer peripheral surface 10b.

On the other hand, as shown in FIG. 4, the inner plate 4 has a pair of disc portions 14 each having a first through hole 5 formed in the center portion and a center line connecting the centers of the first through holes 5. A first connecting portion 15 that connects the disc portion 14 on one side (upper side in the figure) of C ₁ and an outer peripheral edge 15a connects the outer peripheral edge 14a of the disc portion 14 in a straight line in a tangential direction, and a center line C _The disc portion 14 is connected to the other side (the lower side in the drawing) of the one, and the outer peripheral edge 16a is formed by the second connecting portion 16 that connects the outer peripheral edge 14a of the disc portion 14 with a concave curve.

Also in the inner plate 4, a first chamfering process 17 having a chamfering angle of about 30 ° is performed between the surface of the first connecting portion 15 and the flat outer peripheral surface 15 b.
Further, in the pair of inner plates 4, the chamfering angle is about 30 ° between the surfaces of the disk portion 14 and the second connecting portion 15 and the outer peripheral surface 14 b, which are opposed to each other. Two chamfering processes 18 are performed.

  In this chain, the inner plate 4 is disposed with the first connecting portion 15 positioned outside the annular shape, and the outer plate 6 is disposed with the first connecting portion 10 positioned inside the annular shape. ing.

In the deformed plate chain having the above configuration, the center connecting the centers of the first through hole 5 or the second through hole 8 formed in the pair of disk portions 9 and 14 of the inner plate 4 and the outer plate 6. The disc parts 9 and 14 are connected to one side of the lines C ₁ and C _{2 and} the outer peripheral edges 10a and 15a are connected to the outer peripheral edges 9a and 14a of the disc parts 9 and 14 in a straight line in the tangential direction. The connecting portions 10 and 15 are formed, the inner plate 4 is arranged so that the first connecting portion 15 is positioned outside the ring, and the outer plate 6 is positioned so that the first connecting portion 10 is positioned inside the ring. It is arranged.

  Therefore, as shown in FIG. 6, when the sliders 35 and 36 are disposed inside and outside the chain in order to prevent excessive sag of the chain traveling between the sprockets, the inner slider 35 causes the outer plate to move. It is possible to guide the linear outer peripheral surface 10 b in the first connecting portion 10 of the sixth and the outer peripheral slider 36 to guide the linear outer peripheral surface 15 b in the first connecting portion 15 of the inner plate 4.

  As a result, since the contact between the inner plate 4 and the outer plate 6 and the sliders 35 and 36 becomes flat surface contact, vibration and damage in the inner plate 4 and the outer plate 6 and occurrence of local elongation are prevented. , Stable running can be realized.

Moreover, on the other side of the center lines C ₁ and C ₂ connecting the centers of the first through holes 5 and the second through holes 8 of the inner plate 4 and the outer plate 6, the disk portions 9 and 14 are connected to each other. Since the peripheral edges 11a and 16a are connected by the second connecting parts 11 and 16 that connect the outer peripheral edges 9a and 14a of the disk parts 9 and 14 with concave curves, the inner plate 4 and the outer plate 6 can be reduced in weight. can do.

  Further, since the hole 12 is formed in the first connecting portion 10 of the outer plate 6 whose inner diameter of the second through hole 8 is smaller than that of the inner plate 4, the same strength as the inner plate 4 is ensured. In addition, further weight reduction can be achieved.

  In addition, since the first chamfering processes 13 and 17 are performed between the surfaces of the first connecting portions 10 and 15 of the inner plate 4 and the outer plate 6 and the linearly flat outer peripheral surfaces 10b and 15b, By reducing the contact area of the outer peripheral surfaces 10b and 15b that are in surface contact with the slider, it is possible to reduce the frictional force generated during guidance.

  In addition, since the second chamfering process 18 is performed between the outer peripheral surface 14b and the surfaces of the pair of inner plates 4 and the outer surfaces 14b of the disk portion 14 and the second connecting portion 16, The friction force generated between the side surfaces of the sprocket teeth engaged between the plates 4 can also be reduced.

  In the above embodiment, the inner plate 4 is disposed so that the first connecting portion 15 is located outside the annular chain, and the outer plate 6 is disposed in the first connecting portion 10 of the annular chain. Although the present invention has been described with respect to the case where it is arranged so as to be located inside, the present invention is not limited to this, and conversely, the inner plate 4 and the first connecting portion 15 are located inside the annular chain. Even if it arrange | positions in this way and arrange | positions the outer plate 6 so that the 1st connection part 10 may be located in the outer side of the said annular chain, the same effect can be acquired.

DESCRIPTION OF SYMBOLS 1 Inner link unit 2 Bush 4 Inner plate 5 1st through-hole 6 Outer plate 7 Pin 8 2nd through-hole 9, 14 Disc part 10, 15 1st connection part 11, 16 2nd connection part 9a, 10a, 11a, 14a, 15a, 16a outer circumferential edge 10b, 14b, 15b outer peripheral surface 12 the hole 13, 17 the first chamfered 18 second chamfered C _{1, C 2} the center line

Claims (4)

Two end portions of two bushes arranged in a direction orthogonal to the inner plate are inserted and fixed in the through holes of the pair of inner plates arranged to face each other with two first through holes formed. It said plurality of inner link units are integrated by being a pin inserted into the inner bush of the link unit, while being arranged over the outer surface of the inner plate of the inner link units adjacent And an outer plate formed with two second through holes into which end portions of the pins are inserted, and projecting from the bush of the inner link unit adjacent to the second through holes of the outer plate. In the chain formed by connecting both ends of the pin inserted and fixed, an annularly formed chain,
The inner plate and the outer plate include a pair of disk portions each having a first through hole or the second through hole formed in a central portion, and the first through hole or the second through hole. A first connecting portion that connects the disc portions on one side of a center line that connects the centers of the discs, and an outer peripheral edge connects the outer peripheral edge of the disc portion with a straight line in a tangential direction, and the other side of the center line And the outer peripheral edge has a second connecting part connecting the outer peripheral edge of the disk part with a concave curve, and one of the inner plate and the outer plate is connected to the first connecting part. The deformed plate chain is characterized in that the portion is located outside the annular shape, and the other is arranged with the first connecting portion located inside the annular shape.   2. The deformed plate chain according to claim 1, wherein a hole for reducing the weight is formed in the first connecting portion of the outer plate.   The first chamfering process is performed between the surface of the first connecting portion of the inner plate and the outer plate and a flat outer peripheral surface. Different shaped plate chain.   The second chamfering process is performed between the surface and the outer peripheral surface of the disk portion and the second connecting portion on the opposite surface side of the inner plate. The deformed plate chain according to any one of 1 to 3.

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