JPH0349903Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a bulletin board device equipped with maps, various tables, and the like.

(Prior art) A rotary cylinder that can be rotated by a winding spring is provided in a cylinder, and one end of the sheet, such as a map, is wound around the rotary cylinder, and the other end of the sheet is connected to the outside of the cylinder through an exit provided in the cylinder. A sheet winder in which a sheet is pulled outward by being pulled against the winding force of a spring, and when this pulling is released, the sheet is automatically wound around a rotating cylinder again. The loading device was developed in the 1970s.
This has been known for some time from publications such as 89439 and 51-101143.

(Problem to be solved by the invention) However, in this type of structure, the end of the sheet is simply fixed to the rotating cylinder by simply fixing the end to the outer surface of the rotating shaft with adhesive. Since this is done by a simple method, there is a problem that it tends to peel off during repeated pulling out and winding, making it impossible to wrap it around the rotating shaft.

(Means for solving the problem) The present invention is an inverted gutter in which a short cylindrical receiving part is provided on the lower surface of the top inside a pipe-shaped outer shaft whose both ends are closed with caps and a slit is opened in the longitudinal direction. A pipe-shaped inner shaft constructed by fitting the tip of the pin into the receiving part of the gutter-shaped body and the gutter-shaped body with a pin provided on the upper surface of the bottom part is inserted so that it can freely rotate, and both shafts of this inner shaft are inserted. A pair of central shafts are provided in the cap, and these central shafts are rotatably supported in bearings provided in the cap, and a sheet having a width narrower than the length of the slit and having maps, various tables, etc. The upper end edge of the sheet is inserted through the slit into the outer shaft, the above-mentioned pin is pierced through the through hole provided in the upper end edge of the sheet, and the upper incisal edge of this through hole is held by the end surface of the receiving part, and the above-mentioned One of the support shafts is made longer within the inner shaft, and a coil spring is wound around this long support shaft, and both ends of the coil spring are placed at the required locations on the inner shaft and one of the caps, and the ends of the coil springs are placed at the required locations on the inner shaft and at the required locations on one of the caps. and a winding characterized in that a protrusion and a recess are provided on the outer shaft, the sheet is wound around the inner shaft, and the coil spring is locked in the recess in a state where the coil spring is released or has a slightly stored force. The present invention attempts to solve these problems by providing a built-in device.

(Embodiment) The embodiment shown in the figure is a pipe-shaped inner shaft 3 with a hook string 20 made of hard plastic whose both ends are closed with hard plastic caps 1, 1' and a slit 2 opened in the longitudinal direction. By fitting the tip of the pin 14 into the receiving part of an inverted gutter-like body 4' having a short cylindrical receiving part 21 on the lower surface and a gutter-like body 4'' having a pin 14 on the bottom upper surface. The constructed hard plastic pipe-shaped inner shaft 4 is inserted freely and freely rotated.
A pair of central shafts 5, 5' are provided at both ends of this inner shaft 4 via end plate portions 13, 13'.
5' is rotatably supported on bearings 6, 6' integrally provided at the center of the inner surfaces of the caps 1, 1', and the upper edge 8 of the sheet 7 is slightly narrower in width than the length of the slit 2. is inserted into the outer shaft 3 through the slit 2, and the pin 14 is inserted through the through hole 22 provided in the upper edge 8 of the sheet 7.
The upper surface of the incisal edge is held down by the end surface of the receiving part 21, and the end plate part 13 is retreated into the inner shaft 4 to lengthen one of the support shafts 5 within the inner shaft 4. A coil spring 9 is wound around the shaft 5, and both ends of the coil spring 9 are connected to the end plate portion 13 which is retracted into the inner shaft 4 and the hook pins 15, 15 provided on the inner surface of one of the caps 1. ', and the same cap 1
and a protrusion 10 on the outer shaft 3 and the above slit 2.
A recess 11 formed by one end is provided, and the protrusion 10 is locked in the recess 11 when the sheet 7 is wound around the inner shaft 4 and the coil spring 9 is released or slightly stored. , and further sheet 7
A world map 16 is printed on the surface of the sheet 7, and the hem edge of the sheet 7 is formed into a pipe shape, and a round bar 18 is inserted into the pipe shape portion 17 in a manner that cannot be removed.

(Operations and Effects of the Invention) As described above, the present invention has a short cylindrical receiving part provided on the lower surface of the top inside the pipe-shaped outer shaft whose both ends are closed with caps and a slit is opened in the longitudinal direction. A pipe-shaped inner shaft constructed by fitting an inverted trough-like body and a trough-like body with a pin on the top surface of the bottom by fitting the tip of the pin into the receiving part is inserted so that it can freely rotate. A pair of central shafts are provided on both shafts, and these central shafts are rotatably supported by bearings provided on the above-mentioned cap.
In addition, the upper edge of a sheet containing maps, various tables, etc. whose width is narrower than the length of the above-mentioned slit is inserted into the outer shaft through the slit, and the upper edge of the sheet is placed on the longitudinal line of the inner shaft. At the same time, one of the above-mentioned support shafts is lengthened within the inner shaft, and a coil spring is wound around this long support shaft, and both ends of the coil spring are attached at required locations on the inner shaft and at required locations on one of the caps. Furthermore, a protrusion and a recess are provided on the cap and the outer shaft, and the protrusion is engaged in the recess when the sheet is wound around the inner shaft and the coil spring is released or slightly stored. So,
By pulling out the sheet against the winding force of the coil spring and releasing the pull-out, the sheet can be pulled in and wound around the inner shaft automatically and smoothly. Of course, in the present invention, a reverse gutter-like body with a short cylindrical receiving part on the bottom surface of the top and a gutter-like body with a pin on the top surface of the bottom are used, and the tip of the pin is inserted into the receiving part. To attach the sheet to the inner shaft, a through hole is opened at the upper edge of this sheet, the above-mentioned pin is inserted through this through hole, and the upper incisal edge of this through hole is inserted into the receiving part. Since this is done by pressing the sheet with the end surface, the sheet can be attached to the inner shaft more reliably than the above-mentioned known structure in which the end of the sheet is simply secured to the rotating shaft with adhesive. Therefore, the present invention has the effect of sufficiently solving the above-mentioned problems.

[Brief explanation of the drawing]

The drawings show the implementation of the winding device of the present invention, in which Fig. 1 is a perspective view showing the whole, Fig. 2 is an exploded perspective view, and Fig. 3 is a cross section taken along line A-A in Fig. 1. It is a diagram. 1, 1'...cap, 2...slit, 3...
...outer shaft, 4...inner shaft, 4'...reverse trough-like body, 4''...
Gutter-shaped body, 5, 5'... central shaft, 6, 6'... bearing,
7... Sheet, 8... Upper edge, 9... Coil spring, 10... Protrusion, 11... Recess, 13, 13'
... End plate part, 14 ... Pin, 15, 15' ... Hook pin, 16 ... Map, 17 ... Pipe-shaped part, 1
8... Round shaft, 20... Hanging string, 21... Receiving part, 2
2...Through hole.

Claims (1)

[Scope of utility model registration request] An inverted gutter-like body with a short cylindrical receiving part on the lower surface of the top inside a pipe-shaped outer shaft whose both ends are closed by caps and slits are opened in the longitudinal direction, and a gutter-like body with a pin on the upper surface of the bottom. A pipe-shaped inner shaft constructed by fitting the tip of a pin into the receiving part is inserted so that it can rotate freely, and a pair of central shafts are provided on both shafts of this inner shaft, and these central shafts are connected to each other. The upper edge of the sheet, which is rotatably supported on a bearing provided in the above-mentioned cap and is narrower in width than the length of the above-mentioned slit and is equipped with maps, various tables, etc., is inserted into the outer shaft through the slit. Then, insert the above-mentioned pin into the through hole provided at the upper edge of the sheet, press the upper incisal edge of this through hole with the end surface of the receiving part, and extend one of the above-mentioned support shafts into the inner shaft. Then, a coil spring is wrapped around this long support shaft, and both ends of the coil spring are placed at a required location on the inner shaft and at a required location on one of the caps, and a protrusion and a recess are provided on the cap and the outer shaft to attach the protrusion. A winding device characterized in that a sheet is wound around an inner shaft in each recess, and a coil spring is locked in an open or slightly stored state.