JPH026229Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a connecting chain structure in a panel shutter installed in an opening of a building.

[Problems to be solved by the prior art and the invention] Generally, in this type of panel shutter, a connecting chain that connects a plurality of panel bodies in a series is forcibly fed by the forward and reverse movement of a drive sprocket to move the panel bodies. There is a known device in which the opening is opened and closed so that it can be transferred to a vertical guide rail provided in the opening and a horizontal storage rail provided above the opening. As shown in FIG. 5, when the opening is opened and closed, the entire load including the panel body 2 is transferred to the connecting chain on the guide rail 5 side of the drive sprocket 7, with the vertical center line of the drive sprocket 7 as a boundary. 4, and only the load of the connecting chain 4 is applied on the storage rail 8 side, so that as a result, a force that constantly draws the connecting chain 2 toward the guide rail 5 side acts. As a result, during the opening/closing operation of the panel shutter, the connecting chain lifts up from the drive sprocket and climbs over the teeth of the drive sprocket, causing a so-called mountain climbing phenomenon, which disrupts the left-right balance of the panel body and prevents the panel body from moving up and down. This has caused problems, such as the connection chain not being able to operate smoothly and, in some cases, the connecting chain coming off the drive sprocket, making it impossible to open and close the panel shutter.

[Means for solving the problem] In view of the above-mentioned circumstances, the present invention has been devised for the purpose of providing a connecting chain structure in a panel shutter that can eliminate these drawbacks. A plurality of panel bodies are connected in a series by rotatably connecting a connecting chain to a support shaft protruding from the opening.The connecting chain is forcibly fed by a drive sprocket, and the panel bodies are installed above the opening. In a panel shutter that can be fed out and transferred from a horizontal storage rail to a vertical guide rail provided in the opening,
The connecting chain at the part of the connecting chain that is connected to the panel body is connected to a long link plate in which pin shafts are interposed at positions corresponding to the two tooth pitches of the drive sprocket, and an imaginary connecting both pin shafts. At approximately the same distance from both pin axes with respect to the line,
And move from a position that is offset toward the outer diameter side to correspond to the outer peripheral shape of the drive sprocket to a guide hole that is drilled at an angle so that it reaches a position that is on the imaginary line and is offset to the pin axis on the side in the feeding direction of the connecting chain. It is characterized by being constructed with a support shaft of a panel body that can be freely inserted.

With this configuration, the present invention makes it possible to reliably prevent the driving sprocket from climbing over the mountain in the connecting chain.

[Example] Next, an example of the present invention will be described based on the drawings. In the drawings, reference numeral 1 denotes a panel shutter installed in an opening of a building, and a panel body 2 constituting the panel shutter 1 has guide rollers protruding from the upper sides of both left and right edges thereof. A connecting chain 4 is pivotally connected in a series to the support shaft 3a of No. 3 at a predetermined interval. Then, guide rollers 3 are attached to guide rails 5 provided on both the left and right sides of the opening.
Both ends of the panel body 2 are guided to move up and down. Chain 4 is engaged. Further, the shutter case 6 is equipped with a storage rail 8 which is appropriately inclined so that one end faces the upper side of the winding side of the drive sprocket 7 and the other end is lower than the one end. Then, by the chain hoisting operation of the drive sprocket 7, the guide roller 3 of the panel body 2 that has moved up the guide rail 5 is carried around to the upper storage rail 8 side and transferred onto the storage rail 8. In this way, the guide roller 3
The panel body 2 transferred onto the storage rail 8 moves laterally while rolling toward the other end of the storage rail 8 due to the weight of the panel body 2, and is sequentially moved onto the shutter case 6.
They are designed to be stored in parallel inside.

On the other hand, the part of the connecting chain 4 connected to the support shaft 3a of the panel body 2 is connected by a link plate 9 which is set to be long enough to correspond to the two-tooth pitch of the drive sprocket 7. A pair of pin shafts 10 and 11 are interposed at both ends of the link plate 9 at positions corresponding to the two-tooth pitch of the drive sprocket 7.
Furthermore, this link plate 9 has the support shaft 3a.
A guide hole 9a is provided in which the guide hole 9a is movably inserted. That is, the guide hole 9a is located at approximately the same distance from both pin shafts 10, 11 so as to correspond to the tooth pitch of the drive sprocket 7, and is located at a position approximately equal distance from the pin shafts 10, 11 so as to correspond to the tooth pitch of the drive sprocket 7. In this embodiment, the above-mentioned imaginary line is located on the imaginary line L and at a position deviated toward the pin shaft 11 side on the feeding side of the connecting chain 4 from a position that is deviated by H toward the outer diameter side so as to correspond to the outer peripheral shape. The guide hole 9a is a long hole inclined approximately 45 degrees with respect to the line L, and a support shaft 3a is movably inserted into the guide hole 9a as described later. In addition, in the figure, 12 is a normal link plate in the connection chain 4.

In the embodiment of the present invention configured as described above, the panel body 2 descends while being guided by the guide rail 5 and closes the opening by driving the drive sprocket 7 forward and backward to wind down and wind up the chain. Alternatively, it is laterally moved on the storage rail 8 and stored in the shutter case 6, and the opening is opened and closed in this manner.

In this way, in the opening/closing operation of the opening by forward and reverse driving of the drive sprocket 7, the link plate 9
is engaged with the drive sprocket 7 and the guide rail 5
When the axis of the drive sprocket 7 is transferred from the storage rail 8 side to the guide rail 5 side, only the weight of the chain facing the storage rail 8 side causes a small force on the connecting chain 4. The force A instantaneously changes to a large force B which also includes the weight of the panel body 2 facing the guide rail 5 side. As a result, the connecting chain 4 is connected to the guide rail 5.
It is pulled in to the side and floats up from the drive sprocket 7, resulting in tooth skipping and chain detachment phenomena.

However, in the present invention, as described above, the connecting chain of the connecting part with the panel body 2 includes the link plate 9 in which the guide hole 9a is formed, and the pin shafts 1 on both sides.
0 and 11, and a support shaft 3a fitted into the guide hole 9a, the teeth of the drive sprocket 7 mesh with the chain of the panel body connection part, so that the entire load of the panel body 2 is transferred to the drive sprocket 7. In a state in which the support shaft 3a is supported on the side, the support shaft 3a is pushed by the drive sprocket 7 and moves to a position in the guide hole 9a that is offset from the imaginary straight line L connecting the pin shafts 10 and 11 by an amount H toward the outer diameter side. Therefore, even if the support shaft 3a exceeds the axis position of the drive sprocket 7, the pin shaft 1 on the rear side in the chain feeding direction
1 has not yet exceeded the axial center position of the drive sprocket 7, therefore, lifting of the connecting chain 4 is reliably regulated, and the engagement between the connecting chain 4 and the driving sprocket 7 is always maintained in a proper state. Therefore, there are no problems such as tooth skipping or chain coming off. Moreover, in this state, the pin shafts 10, 11 and the support shaft 3a are arranged at equal intervals to the tooth pitch of the drive sprocket 7, so the drive sprocket 7 does not need to have a particularly special tooth structure, and a general-purpose one can be used as is. It is convenient and can be used. Furthermore, in the present invention, when the connecting chain 4 is extended by the drive of the drive sprocket 7 and the link plate 9 is about to separate from the drive sprocket 7, the support shaft 3a moves through the guide hole 9a due to the weight of the panel body 2. Therefore, the linearity of the connecting chain 4 should not be impaired, and the guide width W of the chain guide 13 should be , there is no need to widen the support shaft 3a by the amount H, and in the case of a normal chain in which the support shaft position of the link plate 9 is not biased, careless swinging of the connected chain can be avoided. Similarly, it can be made extremely small, and when the chain guide is used to detect obstacles, the detection accuracy is not impaired in any way.

[Operations and Effects] In short, the present invention is constructed as described above, so that the connecting chain where the panel bodies are connected has a supporting shaft that meshes with the drive sprocket so that the load of the panel body is transferred to the drive sprocket. By being supported by the chain, the support shaft and both pin shafts are in a relationship that matches the outer diameter shape of the drive sprocket. The pin shaft on the side still firmly engages with the drive sprocket on the side that does not go beyond the shaft center, and as a result, the lifting of the connecting chain is reliably prevented, and chain skipping and chain detachment phenomena are eliminated, making it possible to always The panel shutter can be opened and closed smoothly. Furthermore, as the connecting chain advances and the drive sprocket and support shaft begin to disengage, the support shaft will automatically be displaced to a position matching the imaginary line connecting both pin shafts due to the weight of the panel body. Therefore, the linearity of the connecting chain is
Even though the support shaft is configured to be located at a position biased toward the outer diameter side when engaged with the drive sprocket, there is no interference at all.

[Brief explanation of drawings]

The drawings show an embodiment of the connecting chain structure in the panel shutter according to the present invention, in which FIG. 1 is a schematic perspective view of the panel shutter, and FIG. 2 X and Y are front views of the chain connecting part. 3, X and Y are action explanatory diagrams, FIG. 4 X is a horizontal sectional view of the chain guide section, and Y and Z are the special chains in the guide rail when the support shaft is fixed, respectively. FIG. 5 is a horizontal sectional view showing the passing state of the chain part and the passing state of the normal chain part, and FIG. 5 is an explanatory view of the operation of the conventional example. In the figure, 1 is a panel shutter, 2 is a panel body,
3 is a guide roller, 3a is a support shaft, 4 is a connecting chain, 5 is a guide rail, 6 is a shutter case,
7 is a drive sprocket; 8 is a storage rail; 9 is a link plate; 9a is a guide hole; 10 and 11 are pin shafts.

Claims (1)

[Scope of utility model registration request] A connecting chain is rotatably connected to a support shaft protruding from the panel body to connect a plurality of panel bodies in a series, and a driving sprocket is used to forcibly feed the connecting chain to move the panel body above the opening. In the panel shutter, which can be fed out and transferred from a horizontal storage rail provided at the opening to a vertical guide rail provided at the opening, a connecting chain at a portion of the connecting chain connected to the panel body is provided. , a long link plate with pin shafts interposed at positions corresponding to the two-tooth pitch of the drive sprocket, and a drive sprocket that is approximately equidistant from both pin shafts with respect to an imaginary line connecting both pin shafts, and It can be moved freely into a guide hole drilled in an inclined manner from a position offset toward the outer diameter side to correspond to the outer circumferential shape of the sprocket to a position offset to the pin axis on the imaginary line and on the side in the feeding direction of the connecting chain. A connecting chain structure in a panel shutter, characterized in that it is composed of a support shaft of a panel body inserted into the panel body.