JPH0695602A - Signboard device - Google Patents

Abstract

PURPOSE:To smoothly rotate a display body with simple constitution by a motor and to prevent the motor from being damaged due to over load. CONSTITUTION:In a signboard device, the motor 41 having an output shaft 42 projecting upward is provided on the upper end part of a supporter 2, and a cylindrical display body is provided so as to surround the circumference of the supporter 2, and the rotational force of the output shaft 42 of the motor 41 is transmitted to the display body, and the display body is rotated around a vertical shaft. The display body is placed on the output shaft 42 of the motor 41 through a thrust bearing 51, and the under race 55 of the thrust bearing 51 is connected and stuck to the output shaft 42 of the motor 41 so as to rotate around a shaft center, and the upper race 54 of the thrust bearing 51 is stuck to the display body side, and a part balls among a lot of balls 52 in the thrust bearing 51 are stuck to one side of a pair of the races 54, 55.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a signboard device in which a cylindrical display member is rotated around a vertical axis.

[0002]

2. Description of the Related Art In a conventional signboard device in which a display body is rotated around a vertical axis, a support base 62 is provided on the upper end of a support post 61, and a bearing 63 is attached to the support base 62, as shown in FIG. The rotating shaft 64 is vertically passed through the bearing 63, and the stepped lower surface of the rotating shaft 64 is supported on the upper end surface of the bearing 63. In addition, a motor 67 is provided at the lower end of the support base 62, the output shaft 68 of the motor 67 is connected to the rotating shaft 64, and the rotational force of the output shaft 68 of the motor 67 is applied to the rotating shaft 64. There is one in which it is transmitted to a cylindrical display body 66 via a shaft to rotate the display body 66 around the vertical axis (for example, Japanese Patent Publication No. 57-54795).

In this case, the load of the display body 66 is not directly applied to the output shaft 68 of the motor 67, and the display body is driven by the small motor 67.
There is an advantage that the 66 can be driven to rotate.

[0004]

However, in the conventional case,
For example, when the signboard device becomes large and the weight of the cylindrical display body 66 becomes considerably large, or when an external object comes into contact with the display body 66, sliding between the rotating shaft 64 and the display body 66 occurs. The resistance is increased, which causes the motor 67 to stop and the display body 66 to be unable to rotate, or the motor 67 may be overloaded and damaged. Further, in the conventional case, the support base 62 or the like having a complicated structure is required, the entire support structure of the display body 66 becomes very complicated, and the manufacturing cost is high.

In view of the above problems, the present invention has a simple structure in which the display body can be smoothly rotated by a motor and the motor is not likely to be damaged by overload.

[0006]

The technical means of the present invention for solving this technical problem is that a motor 41 having an output shaft 42 projecting upward is provided at the upper end portion of the column 2,
A signboard in which a cylindrical display body 21 is provided so as to surround the periphery of 2 and the rotational force of the output shaft 42 of the motor 41 is transmitted to the display body 21 to rotate the display body 21 around the vertical axis. In the device, the thrust bearing is provided on the output shaft 42 of the motor 41.
The display body 21 is provided in a mounted manner via 51, the lower race 55 of the thrust bearing 51 is connected and fixed to the output shaft 42 of the motor 41 so as to rotate around the axis, and the upper race 54 of the thrust bearing 51 is connected. Is fixed to the display body 21 side, and a part of the many balls 52 of the thrust bearing 51 is fixed to one of the pair of races 54, 55.

[0007]

[Function] The lower race 55 of the thrust bearing 51 is rotated by the rotation of the output shaft 42 of the motor 41, and the rotational force is transmitted to the upper race 54 via the ball 52, and the cylindrical display body 21
Rotates. At this time, if the weight of the display body 21 is considerably large,
If an external object, etc. is in contact with the display body 21, slippage will occur between the ball 52 and the races 54, 55, and the lower race 55 will move to the motor.
Although it smoothly rotates with the output shaft 42 of 41, the upper race 54 on the display body 21 side is temporarily stopped or gently rotated,
The thrust bearing 51 effectively reduces overload on the motor 41.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments. In FIGS. 3 to 6, 1 is a base and 2 is a base.
It is a pillar standing upright at 1. Reference numeral 3 is a hexagonal tubular support body made of sheet metal, which is erected on the base 1 and a back plate 4 is integrally projected on the support body 3. Reference numeral 5 is a puller connected between the back plate 4 and the base 1.

Reference numeral 8 denotes a tubular outer display body composed of a vinyl chloride half mirror, which is bent into a rectangular tubular shape with the mirror surface facing inward, and both end edges thereof are both widthwise ends of the back plate 4. Engaged and held at the edges, which allows the outer display 8 and back plate 4 to
And form a hexagonal cylinder. The lower edge of the outer display body 8 has an engaging groove 9 formed in the upper edge of the support 3 shown in FIG.
It is engaged and held by and is placed on a horizontal support plate 10 attached to the upper end of the support body 3.

Reference numeral 13 denotes a sheet metal lid, which is attached to the upper end of the back plate 4 with screws or the like using the attachment holes 15 and 16 as shown in FIG. The upper edge portion of the outer display body 8 is engaged and held by the joint groove 17. A centering pin 18 is provided at the center of the lid 13 so as to project downward. Reference numeral 21 denotes a hexagonal tube-shaped inner display body provided in the outer display body 8.
As shown in FIG. 1, six mirror plates 22 on the inner peripheral side and six prism plates 23 on the outer peripheral side are provided in a superposed manner. The mirror plate 22 and the prism plate 23 are held in a superposed manner by two sets each by six holding members 24 located at each corner of the inner display body 21, whereby the mirror plate 22 and the prism plate 23 are hexagonal. The inner display body 21 is configured to have a cylindrical shape. Each of the mirror plates 22 is made of vinyl chloride or the like, and is arranged so that the mirror surface is the outer surface side. The mirror plate 22 is provided with a display hole 25 for displaying characters or the like. Is exposed. The prism plate 23 is semi-transparent and silk-printed.

As shown in FIG. 6, an upper support plate 27 is attached to the upper end portion of the inner display body 21 with screws or the like.
A lower support 28 shown in FIG. 4 is attached to the lower end of the with a screw or the like. Insertion holes 29 and 30 are provided at the centers of the upper support plate 27 and the lower support plate 28, respectively.
Strut 2 is inserted through. Reference numeral 33 denotes a light source provided in the inner display body 21, which is composed of a fluorescent lamp and is attached to the column 2. In addition, the strut 2 has a ballast for the light source 33.
34 is installed. Further, an electric cord for connecting the ballast 34 and the light source 33 to the power source is provided at the lower part of the back plate 4,
There is a code hole 35 for insertion on the side of the column 2
A plurality of air holes 36 for air circulation are provided in the upper part and the lower part of 4, and external air is circulated through the air holes 36 to form a ballast 34,
The inside of the light source 33 and the motor 41, which will be described later, are prevented from becoming hot due to heat generation.

In FIG. 1, an L-shaped bracket 39 is attached to the upper end of the column 2 by a screw 40, and a motor 41 for rotating the inner display body 21 is attached to the bracket 39. The motor 41 has an output shaft 42 that projects upward, and the output shaft 42 penetrates the bracket 39 and projects upward. Reference numeral 43 is a connecting member for connecting the output shaft 42 of the motor 41 and the inner display body 21, and has a large diameter portion 44, an upper small diameter portion 45, and a lower small diameter portion 46 in a stepwise manner. By inserting the output shaft 42 of the motor 41 from the lower side into the mounting hole 47 of the lower small diameter portion 46 and tightening the bolt 48, the connecting member 43 is detachably fixed to the output shaft 42 of the motor 41. The thrust bearing 51 is fitted loosely on the upper small diameter portion 45 of the connecting member 43, and the upper portion of the upper small diameter portion 45 is
The upper support plate 27 is inserted into the insertion hole 29 so as to project upward. The thrust bearing 51 includes a large number of balls 52 and the balls.
It has a retainer 53 holding 52 and an upper race 54 and a lower race 55 that sandwich the ball 52 up and down, and the upper race 54 has an upper support plate 27.
The lower race 55 is fixed to the lower surface by welding, and the lower race 55 is fixed to the large diameter portion 44 of the connecting member 43 by welding. As a result, the inner display body 21 is mounted on the output shaft 42 of the motor 41 via the thrust bearing 51, and the lower race 55 of the thrust bearing 51 is connected and fixed to the output shaft 42 of the motor 41. The upper race 54 is fixed to the inner display body 21 side. As shown in FIG. 2, a part of the large number of balls 52 of the thrust bearing 51, that is, three balls 52a at equal intervals are fixed to the lower race 55 by welding. A center hole 56 for centering is provided in the upper small diameter portion 45 of the connecting member 43, and the centering pin 18 of the lid 13 is inserted into the center hole 56 so as to be relatively rotatable. As a result, the inner display body 21 can be smoothly rotated about the vertical axis in combination with the insertion of the support column 2 into the lower support plate 28 without fear of rattling.

According to the configuration of the above embodiment, the light from the light source 33 is reflected and refracted by the prism plate 33 and is emitted from the display hole 25 to the outside of the inner display body 21, and the light is emitted to the inner display body 8 and the inner display body 21. The light is emitted to the outside from the outer display body 8 while repeating reflection with the display body 21. As a result, when viewed from the outside, the display of the display holes 25 appears to overlap in multiple layers with depth. Then, the rotation of the output shaft 42 of the motor 41 is transmitted to the inner display body 21 via the thrust bearing 51, and the inner display body 21 is rotationally driven about the vertical axis. The rotation of the inner display body 21 causes the display of the display hole 25 having a depth to rotate.

In the above embodiment, some of the balls 52 of the thrust bearing 51 are fixed to the lower race 55.
Alternatively, a part of the ball 52 may be fixed to the upper race 54. In addition, the ball 52 sticking to the race 54,55
Is not limited to 3, and may be 2 or less or 4 or more. Further, in the above-mentioned embodiment, the light source 33 is constituted by a fluorescent lamp, but the light source 33 is not limited to this, and an incandescent bulb or the like may be used according to the size and shape of the signboard device.

[0015]

According to the present invention, the display body 21 is mounted on the output shaft 42 of the motor 41 via the thrust bearing 51, and the upper race 54 of the thrust bearing 51 rotates about the axis. As described above, the lower race 55 of the thrust bearing 51 is fixedly connected to the output shaft 42 of the motor 41, and is fixed to the display body 21 side.
Since a part of them is fixed to one of the pair of races 54, 55, when the weight of the cylindrical display body 21 is considerably large, or when the display body 21 comes into contact with an external object. Then, a slip occurs between a part of the ball 52 and the races 54, 55, and the lower race 55 on the motor 41 side smoothly rotates together with the output shaft 42 of the motor 41, but the upper race 54 on the display body 21 side The motor is temporarily stopped or slowly rotated, so that the overload on the motor 41 can be effectively mitigated by the thrust bearing 51, and the damage due to the overload of the motor 41 can be reliably prevented. Further, even if the display body 21 is a heavy object or an external object comes into contact with the display body 21, the rotational force of the motor 41 is applied to the display body 21 through the races 54 and 55 of the bearing 51 and some balls 52. Can be gradually transmitted, and the display body 21 can be smoothly rotated without becoming unrotatable. In addition, the display body 21 may be provided on the output shaft 42 of the motor 41 via the thrust bearing 51 in a mounted state, which makes the support structure of the display body much simpler than the conventional one and also reduces the manufacturing cost. It becomes cheaper and its effect is significant.

[Brief description of drawings]

FIG. 1 is a side sectional view of a motor and a thrust bearing portion.

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

FIG. 3 is an overall perspective view.

FIG. 4 is an overall perspective view showing a state in which an outer display body and an inner display body are removed.

FIG. 5 is an overall perspective view seen from the back side in a state where the outer display body and the inner display body are removed.

FIG. 6 is a sectional view taken along line BB of FIG.

7 is a cross-sectional view taken along the line CC of FIG.

FIG. 8 is a perspective view of a lid body.

FIG. 9 is a perspective view of an inner display body.

FIG. 10 is a front view of a prism body.

FIG. 11 is a plan sectional view of an inner display body.

FIG. 12 is a side sectional view showing a conventional example.

[Explanation of symbols]

 2 Support 21 Display inside 41 Motor 42 Output shaft 51 Thrust bearing 52 Ball 54 Upper race 55 Lower race

Claims (1)

[Claims] 1. A motor (41) having an output shaft (42) protruding upward is provided at an upper end portion of the column (2), and a cylindrical display body (21) is provided so as to surround the periphery of the column (2). ) Is provided and the motor (4
In the signboard device configured to transmit the rotational force of the output shaft (42) of (1) to the display body (21) and rotate the display body (21) around the vertical axis, the output shaft of the motor (41) ( 42) on the thrust bearing
The display body (21) is provided via the (51) via the (51), the output shaft (42) of the motor (41) so that the lower race (55) of the thrust bearing (51) rotates about its axis. And the upper race (54) of the thrust bearing (51) is fixed to the display body (21) side.
Part of the item (2) is fixed to one of the pair of races (54, 55), and is a signboard device.