JPH05270627A - Endless toothed belt - Google Patents

Abstract

PURPOSE:To provide an endless toothed belt which improves strength by adopting both the merits of the connected parts of a finger-shaped cut and a V-shaped cut. CONSTITUTION:Lug pieces 15, 16 of a group of V-shaped cuts which are formed by joining oblique edge lines 15a, 16a in an angle form in a cross direction are provided respectively at the edge parts. On both the sides of the lug pieces of a group of V-shaped cuts, lug pieces 17, 18 of rectangular cuts are provided by side edge lines 15b, 16b which joins the oblique edge lines and extend to both sides in the cross direction of a body. Moreover, the lug pieces of a group of V-shaped cuts and a group of rectangular-shaped cuts at one edge part and the other end part are combined alternately for a deposited or jointed structure. The edge connected part in the main body of a belt is formed, as a main, into a V-shaped cut with excellent connecting strength to bear the tension of rotating frictional force by an idler pulley to only the rectangular lugs at both the edges of the main body of the belt.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endless toothed belt, and more particularly to an endless toothed belt suitable as a conveyed object, especially when counting coins while conveying coins in various kinds of money handling devices. Regarding

[0002]

2. Description of the Related Art FIGS. 5 and 6 show two well-known endless belts of this type in which one end portion and the other end portion of the belt belt are connected by welding to form an endless belt. There is. The connection form of FIG. 5 is called a finger-shaped cut, and rectangular shaped cut tongue pieces 2a and 3a are provided at one end and the other end of the belt 1 to be connected in parallel with the longitudinal direction, respectively. Pieces 2a, 3a
Endless by welding and connecting them alternately. The connection form of FIG. 6 is called a V-shaped cut, and the tongue portion 4a of the V-shaped cut group at one end and the tongue piece of the V-shaped cut group at the other end extending in the longitudinal direction at both connection ends of the belt 1. 5a and 5a are alternately combined. Comparing the breaking strengths of the connection parts by the finger-shaped cut and the V-shaped cut, the number of reinforcing core wires embedded in the belt longitudinal direction,
It is known that the tensile strength of the connection portion in the V type is considerably larger than that of the finger type if the specifications based on the belt width dimension and the number of tongue pieces are the same.

When counting coins while conveying and scraping coins and coins by using endless toothed belts in various money handling devices, in order to give a proper tension to the belt being driven, both ends of the belt are It is often pressed from the backside with an idler pulley to give local tension. In this case, in the belt having the V-shaped connection portion shown in FIG. 6, the idler pulley continuously contacts along the oblique edge line forming the V-shaped tongue portion 4a (5a).
As a result, if the attachment tension acting on the belt is high, the crack occurrence rate is high along the diagonal edge, and if the crack grows, the belt will come off the idler pulley during driving, and the idler pulley will lose its function. become. Further, if the reinforcing core wire is exposed from the cracked portion, a coefficient error of the coin being conveyed may be caused, which may lead to a fatal malfunction as a money handling device. On the other hand, in the finger-shaped cut belt shown in FIG. 5, the rectangular tongue portion 2a (3a) is a rectangular shape having a vertical edge line extending parallel to the belt longitudinal direction and a horizontal edge line orthogonal to the vertical edge line. .. Therefore, in order to prevent the idler pulley from coming into contact with the vertical edge line, the distance between the adjacent vertical edge lines may be made larger than the width of the idler pulley. That is, it is possible to make the length of the lateral edge line larger than the width of the idler pulley so that the idler pulley contacts only this lateral edge line. However, increasing the width of the lateral edge means decreasing the size of the rectangular tongue piece 2a (3a). Therefore, such a specification change causes a reduction in the strength of the connection portion against tension and the like, and if elongation occurs, use it. There is an inconvenience that it can not stand.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide an endless toothed belt in which strength is improved by taking advantage of both the finger-shaped cut and the connecting portion of the V-shaped cut group.

[0005]

SUMMARY OF THE INVENTION An endless toothed belt according to the present invention has a belt-shaped main body having teeth at a predetermined pitch, which is connected to one end and the other end of the belt-shaped main body to form an endless body, and a reinforcing core in the longitudinal direction. In the endless toothed belt with embedded
V that is formed by connecting diagonal edge lines in a mountain shape at the ends
The tongue portion of the shape cut group is provided, and the rectangular cut tongue portion is formed on both sides of the tongue portion of the V shape cut group by the lateral edge lines extending to both side surfaces in the width direction of the main body in a continuous manner with diagonal edge lines. It is provided such that the V-shaped cut group tongue pieces and the rectangular cut tongue pieces at one end and the other end are alternately combined and welded or joined.

[0006]

[Function] The V-shaped connecting portion of the belt body has excellent connection strength.
Mainly the shape cut group. Since a rectangular tongue piece, which is a modification of the finger-shaped cut, is provided on both sides of the belt main body in succession to this V-shaped cut group, the rectangular tongue piece is brought into contact with the idler pulley to apply tension by the idler pulley to the belt. Only the rectangular tongues at both ends of the body are used to bear the load. Therefore, the strength of the connecting portion of the V-shaped cut group is utilized in strength, and at the time of use, the breaking strength is compensated by the rectangular tongue portion against the tension of the idler pulley.

[0007]

Embodiments of the endless toothed belt according to the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2, in an endless toothed belt 10 (hereinafter simply referred to as a belt) of an embodiment, a main body 11 is formed in a band shape with an elastic material such as polyurethane rubber, and is used inside the main body 11. A tooth 1 that sometimes meshes with a plurality of pulleys 20-22 (see FIG. 3)
2 are provided at a predetermined pitch. Further, inside the main body 11, a large number of reinforcing core members 13 extending in the longitudinal direction, such as piano wires, are embedded to reinforce the tension acting in the longitudinal direction of the main body 11 during driving. Body 11
The endless belt 10 is wound around the pulleys 20 to 22 by connecting the one end 11A and the other end 11B by welding or the like to provide the connecting portion 11C. In order to apply a suitable tension to the entire wound belt 10, as shown in FIG. 3, an idler pulley 23 for contacting and pressing the back surface is arranged at an appropriate position of the belt 10. In addition, as described in FIG. 4, the idler pulley 23 does not have the full width of the belt 10 and is composed of two pieces arranged on both sides of the belt 10 in the width direction. The back of the part is pressed.

On the other hand, in the connecting portion 11C, at one end portion 11A of the main body 11, a plurality of V-shaped cut tongue pieces (hereinafter referred to as V-shaped portions) are formed by connecting oblique edge lines 15a extending obliquely along the longitudinal direction in a mountain shape. 15) is provided, and a plurality of V-shaped tongue portions 16 having the same shape in which the diagonal edge lines 16a are connected in a mountain shape are provided at the other end 11B.
6 are alternately combined. Both diagonal edges 15
a and 16a, the lateral edge lines 15b and 16b are connected to both sides of the belt main body side surfaces 14 and 14 that are closest to the belt main body side surfaces 14 and 14.
4 is provided at a substantially right angle, that is, in the direction transverse to the width direction of the main body 11. Therefore, on both sides of the main body 11, rectangular cut tongue pieces (hereinafter referred to as rectangular tongue pieces) 17 and 18 are formed with the lateral edge lines 15b and 16b as boundaries.

Oblique edge line 15a (16a) and horizontal edge line 15
Both b (15b) cross the reinforcing core material 13, and the connecting portion 11C has a structure in which the reinforcing core material 13 is wrapped and fused and connected by melting polyurethane rubber or the like.

FIG. 3 and FIG. 4 show an example of usage of the belt 10 of the embodiment. The endless belt 10 is wound around three pulleys 20, 21 and 22, and one of these pulleys is used as a drive pulley to rotate in a counterclockwise direction as indicated by an arrow in the figure. In the figure, a structure is shown in which two pairs of locking projections 19 are provided side by side on the back surface of the belt 10 at a predetermined interval, and the back surface of the belt 10 carries a conveyed object 24 to support the locking projections 19. By setting the
Is sequentially conveyed to a predetermined site. In this case, as the transported object 24, a coin as shown in the drawing may be used in a money handling device, but the coin is not particularly limited to a coin in the sense of achieving the present invention. Further, the shape of the locking protrusion 19 is not limited to the example shown in the figure, corresponding to the type, shape and size of the conveyed product 24.

Here, as shown in FIG. 4, two idler pulleys 23 arranged on both sides of the belt 10 in the width direction.
Regarding the size of, when the length of the lateral edge line 15b (16b) forming the rectangular tongue pieces 17 and 18 is h,
It is preferable that the length h is within the range. That is, the size of the idler pulley 23 exceeds the horizontal edge line 15b (16b) having the length h and the diagonal edge line 15a (16b).
It does not come into contact with a). The reason for this is that the diagonal edge line 15a (16) extending along the longitudinal direction of the belt 10 is
a) is not to contact the idler pulley 23,
This is because making the direction of the tension due to the rotational frictional force of the idler pulley 23 coincident with the oblique edge line 15a (16a) is likely to cause breakage along the oblique edge line 15a (16a), which is disadvantageous. Also, in connection with this, the idler pulley 2
By making the length of 3 shorter than the length h of the lateral edge line 15b (16b) by a dimension x or more, the tension by the idler pulley 23 is borne by only the lateral edge line 15b (16b) orthogonal thereto.

[0012]

As described above, in the endless toothed belt according to the present invention, the end connecting portion of the belt main body is provided mainly with the V-shaped cut having a connection strength superior to the finger-shaped cut. Since it has a configuration in which rectangular tongue portions, which are also called deformations of finger-shaped cuts, are provided on both sides of the belt main body in line with the shape cut,
By contacting the idler pulley with the rectangular tongue and allowing the tension of the rotational frictional force due to the idler pulley to be carried only by the rectangular tongues at both ends of the belt body, the strength of the V-shaped cut connection is advantageous. It is possible to improve the breaking strength against the tension of the idler pulley during use.

[Brief description of drawings]

FIG. 1 is a plan view of a connecting portion of an endless toothed belt according to an embodiment of the present invention.

FIG. 2 is a side view of a connection portion of the embodiment.

FIG. 3 is an overall view showing a usage pattern of the endless toothed belt of the embodiment.

FIG. 4 is a plan view of a usage pattern.

FIG. 5 is a plan view of a connection portion formed by a conventional finger-shaped cut.

FIG. 6 is a plan view of a conventional V-shaped cut connecting portion.

[Explanation of symbols]

 10 Belt 11 Main Body 13 Reinforcement Core Material 15, 16 V-Shaped Cut Tongue Pieces 15a, 16a Oblique Edge Lines 15b, 16b Horizontal Edge Lines 17, 18 Rectangular Cut Tongue Pieces

Claims (1)

[Claims] 1. An endless toothed belt in which one end and the other end of a strip-shaped body having teeth with a predetermined pitch are connected to each other to make an endless one, and a reinforcing core is embedded in a longitudinal direction,
V that is formed by connecting diagonal edge lines in a mountain shape at the ends
The tongue portion of the shape cut group is provided, and the rectangular cut tongue portion is formed on both sides of the tongue portion of the V-shaped cut group by the lateral edge lines that extend to both side surfaces in the width direction of the main body in a continuous manner with diagonal edge lines. An endless toothed belt, wherein the V-shaped cut group tongue pieces and the rectangular cut tongue pieces at one end and the other end are alternately combined and welded or joined.