JP2555187Y2 - Roller chain - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a roller chain for hanging a plurality of panels by meshing with a sprocket of a panel elevating drive system, for example, in a panel shutter, and in particular, a related structure of a chain link plate and a guide roller. The present invention relates to an improved roller chain.

[0002]

2. Description of the Related Art FIG. 5 is a schematic front view showing a conventional panel shutter, and FIG. 6 is an enlarged view showing part A of FIG. First, in FIG. 5, 1 is on both sides to the standing arranged right and left pair of guide rails of the shutter opening and closing openings such as buildings, 2 is the panel accommodating brackets, which is placed on the top of the guide rail 1, the panel housing A pair of left and right sprockets (not shown) of a panel elevating drive system driven in forward and reverse rotations are disposed in the bracket 2, and these sprockets have a pair of right and left sprung down and up and down in the guide rail 1. The roller chain 3 is engaged.

[0003] These roller chains 3 link a plurality of upper and lower panels 4 vertically adjacent to each other between the guide rails 1, and these panels 4 constitute a shutter curtain.

Therefore, when the sprocket is driven to rotate in the shutter closing direction, the roller chain 3 meshing with the sprocket descends in the guide rail 1 so that the shutter curtain (panel) 4 is moved between the guide rails 1. It is paid out. When the sprocket is driven to rotate in the reverse direction, the shutter curtain 4 between the guide rails 1 moves into the panel storage bracket 2 and is stored in a folded state.

Next, the detailed structure of the roller chain 3 and the means for attaching the panel 4 will be described with reference to FIG.

First, in the roller chain 3, the left and right outer link plates 30 and the inner link plates 31 are connected to each other by link pins 5 so as to be bent and rotatable. The long pin 6 is attached.

The long pin 6 is coaxial with the large diameter shaft portion 6.
0 and a small-diameter shaft portion 61, and the former large-diameter shaft portion 60 is connected to the link plates 30 and 3.
1 and the panel 4, and the latter small-diameter shaft portion 61 is a roller mounting portion.

The small-diameter shaft portion 61 of the long pin 6
After the guide roller 7 is rotatably fitted therein, a retaining ring 8 is attached to prevent the guide roller 7 from coming off.

[0009] Such insert a large-diameter shaft portion 60 of the long pin 6, wherein the panel mounting portion of the roller chain 3 out link plates 30, 31 in transmural set to Rutotomoni, the pin insertion hole provided in the top sides of the panel 4 By,
A panel 4 is suspended from the roller chain 3 via the long pins 6.

The guide roller 7 rolls on a support rail (not shown) for panel suspension and storage of the panel storage bracket 2.

[0011]

The conventional roller chain is constructed as described above, and the long pin 6 is connected to the large-diameter shaft portion 60.
And the small-diameter shaft portion 61, the cutting process of the long pin 6 is troublesome and not only increases the processing cost, but also increases the guide roller 7 fitted into the small-diameter shaft portion 61 of the long pin 6. Since the retaining ring 8 separate from the long pin 6 is fitted into and engaged with the engaging groove on the outer periphery of the distal end of the small-diameter shaft portion 61, the number of parts is increased and the cost is increased. In addition, there is a problem that it is inconvenient in terms of parts inventory management.

[0012] The present invention has been made to solve the above problems, the attained reduction in cutting man-hours long pin, can be reliably prevented coming off the guide roller at a portion of the chain link plates, and It is another object of the present invention to provide a roller chain that can reduce the cost by eliminating the need for the conventional retaining ring.

[0013]

Means for Solving the Problems] roller chain in accordance with this invention are the same over the long pin that is pierced in the link plates meshed with the sprocket of the rotary drive system chain to supporting lifting the object conveying member throughout the axial length While forming to the diameter,
An annular engaging groove is formed on an outer peripheral surface of a boss portion integrally formed with a guide roller attached to the long pin and protruding toward the link plate side of the chain, and the long pin is
The penetrated portion of the link plate is bent toward the boss portion side and fitted into and engaged with the annular engagement groove to allow the guide roller to rotate on the long pin and to move in the axial direction. The restricting bending engagement piece is integrally formed.

[0014]

In the roller chain according to the present invention, since the long pins are formed to have the same diameter over the entire length of the shaft, the number of cutting processes is reduced and the processing cost is reduced as compared with the case of the conventional stepped pins.

Further, the bent engaging piece portion integrally formed on the chain link plates pierced portion of the long pin, be fitted and engaged with the annular engaging groove formed in the boss portion outer peripheral surface of the guide roller Because, by allowing the rotation of the guide roller and restricting the axial movement,
Long pin in place with chain link plate
As long as it is held, the engagement between the bent piece portion and the annular groove is maintained.
In some cases, the guide roller may come off from the long pin
No more. Therefore, with the long pin has been conventionally required not passed can Unnecessary the retaining ring separate, the cost can be reduced number of parts is reduced, which is advantageous to inventory management component.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of a main part of a roller chain according to an embodiment of the present invention, FIG. 2 is a right side view of FIG. 1, and FIG. 3 is a view showing a long pin halved along an axis and shown symmetrically with FIG. 4 is a cross-sectional view taken along the line AA of FIG. 2, and the same or corresponding parts as those in FIGS.

In the drawing, the long pin 6 has the same axial length as the entire diameter, and an engagement groove 6a (see FIGS. 3 and 4) is formed on the outer peripheral surface near one end of the long pin 6 on the roller mounting side. Have been.

Meanwhile, the roller chain 3, and an outer link plate 32 and the inner link plates 33 for passing support the long pin 6.

[0019] The guide rollers 7 are attached is incorporated fitted rotatably to one end of the long pin 6 which is formed through the outer link plate 32 and the inner link plate 33.

[0020] The guide roller 7 has integrally a boss portion 7a protruding to the link plates 32 and 33 side coaxially annular engagement as the outer peripheral surface 4 of the boss portion 7a A groove 7b is formed.

In the outer link plate 32 and the inner link plate 33, one of the inner link plates 33 is formed integrally with a bent engagement piece 33a.

[0022] The bent engagement piece portion 33a, the long pin on the six-axis bent toward the guide roller 7 side from the one side edge portion of the inner link plates 33, and the boss portion of the guide roller 7 7a is fitted and engaged in the annular engagement groove 7b.

In this state, the bending engagement piece 33
“a” permits the rotation of the guide roller 7 and restricts the axial movement of the guide roller 7.

[0024] Here, the E retaining ring 9 is in the engagement groove 6a of the long pin 6 is engaged fitting engagement, the E retaining ring 9 to prevent contact between the link plate 32 and the guide roller 7.

By inserting the long pin 6 of the roller chain 3 having the above-described configuration into the pin insertion hole of the panel 4 as the object to be transferred from the side opposite to the guide roller 7, the panel 4 of the panel shutter can be rotated by the roller chain. It is suspended at 3.

In the above embodiment, the roller chain 3 of the panel shutter has been described. However, the roller chain 3 of the present invention is not limited to the panel shutter, but may be, for example, a roller chain 3 such as a conveyor chain. The present invention can be applied to other fields as long as the object to be transferred is attached and supported via the long pins 6.

The bent engagement piece 33a is not limited to being formed integrally with the inner link plate 33, but may be formed integrally with the outer link plate 32.

[0028]

As described above, according to the present invention, a long pin which penetrates a link plate of a chain meshed with a sprocket of a rotary drive system and mounts and supports a transferred object on the chain extends over the entire axial length. Since they are formed to have the same diameter, there is an effect that the number of cutting processes is reduced and the processing cost is reduced as compared with the case of the conventional stepped pins.

Further , a bent engagement piece formed integrally with the chain link plate at a portion where the long pin is penetrated,
By fitting engages a formed in the boss portion outer peripheral surface of the guide roller annular engagement groove, since so as to regulate the acceptable and axially moving the rotation of the guide rollers, Long
Pin is held in place with respect to chain link plate
As long as the bent piece portion and the annular groove
And the guide roller comes out of the long pin
Advantageously eliminated, Therefore, with the long pin has been conventionally required not passed can Unnecessary the retaining ring separate, Rutotomoni Hakare the cost component count is reduced, also the stock control of parts Is obtained.

[Brief description of the drawings]

FIG. 1 is a front view of a main part of a roller chain according to an embodiment of the present invention.

FIG. 2 is a right side view of FIG.

FIG. 3 is a diagram showing a long pin cut in half along an axis and shown symmetrically with FIG. 1;

FIG. 4 is a sectional view taken along line AA of FIG. 2;

FIG. 5 is a schematic front view showing a conventional panel shutter.

FIG. 6 is an enlarged view showing part A of FIG.

[Explanation of symbols]

 Reference Signs List 3 roller chain 4 panel (transferred object) 6 long pin 7 guide roller 7a boss 7b annular engagement groove 33a bent engagement piece

Claims (1)

(57) [Scope of request for utility model registration] 1. A chain meshed with a sprocket of a rotary drive system and a chain formed through a link plate of the chain.
A long pin and a rotatable attachment to this long pin
Guide roller, and the transferred object is
In the roller chain to be supported , the long pin is formed to have the same diameter over the entire axial length, and the guide roller is integrally formed with a boss protruding toward the link plate side of the chain, and is formed on the outer peripheral surface of the boss. Forms an annular engagement groove, and is bent toward the boss portion side and fitted into and engaged with the annular engagement groove at a portion of the link plate where the long pin penetrates. A roller chain, wherein a bent engagement piece for permitting rotation of a guide roller and restricting axial movement is integrally formed.