JPH0726594Y2 - Endless chain steady rest device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an anti-sway device for an endless chain which is wound around a pair of sprockets to run endlessly.

[Conventional technology]

By hanging the endless chain between the pair of sprockets and rotating at least one pair of sprockets,
The chain drive mechanism configured to rotate the endless chain endlessly is used in various devices.

For example, in the vertical rotary storage (A) as shown in FIG. 3, the horizontal axes (C) and (D) provided in the upper and lower parts of the rectangular parallelepiped case (B) are parallel to each other, and The pair of sprockets (1) and (2) are pivotally fitted, and both sprockets (1)
An endless chain (3) is wound around (2) and one of the sprockets (1) or (2) is rotated by a driving means (not shown) such as a motor to move the endless chain (3) in a desired direction. The endless chain (3) is vertically rotated with a number of trays (G) that are locked to the endless chain (3) with appropriate links (E) and (F) so as to always keep horizontal,
Items stored in the desired tray (G) are stored in the case (B).
The entrance and exit (H) provided on the front surface of the car can be used for access.

Also, as a similar device using a chain drive mechanism,
For example, there is one disclosed in Japanese Patent Laid-Open No. 63-247205.

[Problems to be solved by the device]

In some of the above-mentioned devices, the distance between the upper and lower sprockets (1) and (2) is several meters, and in such a device, when the endless chain (3) is running, the endless chain (3 There is a possibility that the straight running portion of) may shake laterally to generate noise, or the endless chain (3) may collide with other objects in the case (B) and damage it.

In order to prevent such lateral runout of the straight running portion of the endless chain (3), conventionally, the upper and lower sprockets (1) have been used.
It is conceivable to provide a guide sprocket (not shown) in the middle of (2) and on the inside or outside of the running locus of the endless chain (3), but in the rotary storage (A) as described above. Is equipped with a pusher (not shown) for pushing the load in the tray (G) to the entrance (H) and one sprocket (1) or (2) inside the running path of the endless chain (3). Motor for rotating (not shown)
And the like, and a large number of trays (G) and links (E) and (F) are attached to the outside of the running path of the endless chain (3), so a space for installing the guide sprocket as described above. There is a problem in that

An object of the present invention is to provide an endless chain steady rest having a simple structure that solves the above problems.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the device of claim (1) has an endless chain wound around a pair of sprockets, and at least one of the sprockets is rotated to make the endless chain run endlessly. In the chain drive mechanism, the endless chain is formed of a magnetic material, and a guide plate is provided in parallel and close to the linear running portion of the endless chain, and the linear running portion of the endless chain is provided on the guide plate. The feature is that a permanent magnet that attracts slidably is provided.

According to a second aspect of the present invention, there is provided a chain drive mechanism in which an endless chain is wound around a pair of sprockets, and at least one of the sprockets is rotated to endlessly rotate the endless chain. It is characterized in that the chain is formed of a permanent magnet, and a guide plate made of a magnetic material is provided in parallel with the straight running portion of the endless chain so as to be slidably attracted to the endless chain.

[Action]

In the invention of claim (1), when the endless chain runs, the endless chain runs while slidingly contacting it while being absorbed by a permanent magnet provided on the guide plate, and in the invention of claim (2). In the above, in the endless chain, while adsorbing the guide plate, the endless chain slides along the guide plate and runs around, so that the lateral runout of the linear running portion of the endless chain is prevented.

〔Example〕

FIG. 1 shows an embodiment (first embodiment) of the invention of claim (1).
Indicates.

(1) and (2) are a pair of upper and lower sprockets, and (3) is
With the endless chain hung around them, these are the third
It is the same as shown in the figure.

In the first embodiment, the endless chain (3) is formed of a magnetic material such as steel, and is parallel to the linear running parts (3a) (3b) inside the running locus of the endless chain (3). The guide plates (4) and (5) are fixed to an appropriate fixed body (not shown) in the vicinity of the straight line traveling portions (3a) and (3b), and the outer surfaces of the guide plates (4) and (5) are fixed. Further, permanent magnets (6) and (7) for slidably attracting the linear running portions (3a) and (3b) of the endless chain (3) are fixed.

With the structure as in the first embodiment, when any one of the sprockets (1) or (2) is rotated by an appropriate driving means (not shown) and the endless chain (3) is rotated, the endless chain (3) is rotated. The chain (3) has its straight running parts (3a).
In (3b), it is attracted to the permanent magnets (6) and (7) and runs along with it while making sliding contact, so the straight running section (3a)
Lateral shake in (3b) is prevented.

FIG. 2 shows an embodiment (second embodiment) of the invention of claim (2).
Indicates.

(1) and (2) are a pair of upper and lower sprockets, and (11) is
It is an endless chain wound around both sprockets (1) and (2).

In the second embodiment, the endless chain (11) is formed of a permanent magnet, and each linear running portion (11) of the endless chain (11) is located inside the running path of the endless chain (11).
Guide plates (12) (13) made of magnetic material parallel to a) (11b)
Is fixed to an appropriate fixed body (not shown) so as to be in sliding contact with each of the straight line running portions (11a) and (11b).

In addition, in the endless chain (11), only the connecting pin (14) is configured by a bar magnet having an N pole at one end and an S pole at the other end, and the connecting plate (15) is simply a magnetic body, or is connected. Only the plate (15) may be a permanent magnet.

With the configuration of the second embodiment, as in the case of the first embodiment, the endless chain (11) has its linear running portions (11
In (a) and (11b), the guide plates (12) and (13) are attracted and slide along the guide plates (12) and (13), so that the straight running parts (11a) and (11b) are prevented from lateral runout.

[Effect of device]

According to the present invention, the straight chain of the endless chain has a simple structure in which one of the endless chain and the guide plate provided in parallel with the straight running portion is formed of a permanent magnet and the other is made of a magnetic material. It is possible to reliably prevent lateral deflection of the running part.

Further, since it is only necessary to provide the guide plate and the permanent magnet in parallel with the straight running portion of the endless chain, the present invention can be applied as long as there is a slight gap between the endless chain and the case, etc. If there is an obstacle, it is possible to cut off the guide plate only at that portion.

[Brief description of drawings]

FIG. 1 is a front view showing a first embodiment of the present invention, FIG. 2 is a front view showing a second embodiment of the present invention, and FIG. 3 is a vertical rotation using a conventional chain drive mechanism. It is a schematic perspective view which shows an example of a type storage. (1) (2) …… sprocket, (3) (11) …… endless chain (3a) (3b) (11a) (11b) …… straight running part, (4)
(5) (12) (13) …… Guide plate (6) (7) …… Permanent magnet, (14) …… Connecting pin (15) …… Connecting plate

Claims (2)

[Scope of utility model registration request] 1. A chain drive mechanism in which an endless chain is wound around a pair of sprockets, and at least one of the sprockets is rotated so that the endless chain runs endlessly. A guide plate is provided in parallel with and in close proximity to the straight running portion of the endless chain,
A steady rest of an endless chain, wherein the guide plate is provided with a permanent magnet that slidably adsorbs a straight running portion of the endless chain. 2. A chain drive mechanism in which an endless chain is wound around a pair of sprockets, and at least one of the sprockets is rotated so that the endless chain runs endlessly. And a guide plate made of a magnetic material that is slidably attracted to the endless chain and is provided in parallel with the straight running portion of the endless chain. .