JPH0353249Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Technical field of the invention The present invention relates to a rotary table on which a cathode ray tube (hereinafter referred to as CRT) display device, etc. is mounted, and is particularly concerned with the improvement of a rotary table suitable for improving operability. about.

(b) Background of the Technology In recent years, CRT display devices have been used as auxiliary devices for computer terminals, small computers, word processors, and the like.
It is also widely used in television receivers, video games, and the like. In particular, the use of display devices is expanding with the advancement of office automation, and display devices are also being used for transactional dialogue between customers and clerks at consultation corners of financial institutions.

These display devices are usually placed on a table, but are placed on a rotating stand so that the screen can be oriented upward, downward, and rotated. Therefore, it is desirable to be able to easily change direction in order to view the screen in the best possible position.

(c) Prior art and problems The conventional method will be explained below with reference to FIGS. 1 to 3. Figure 1 is a plan view, Figure 2 is A- of Figure 1.
3 is an exploded perspective view of FIG. 1.

As shown in FIGS. 1 to 3, the rotary table 1 is composed of a base plate 2, a middle plate 3, a mounting plate 4, and a screw plate 5, screws 6, and screws 7 that connect these plates. Base plate 2
A counterbore hole 2a is formed in the center, a concentric ring-shaped guide protrusion 2b is formed on the upper surface, and rubber feet 2c are attached to the upper surface. The middle plate 3 has a shaft part 3a on the lower surface and a ring-shaped guide groove 3 which is concentric with the shaft part and has the same diameter as the ring shape of the guide protrusion part 2b of the base plate 2.
b has an arcuate cross section on its upper surface and a recess 3C having a predetermined width, and a mounting portion 3d having a screw hole is formed in the center of the recess 3C. The middle plate 3 is placed on the mounting plate 4.
A convex portion 4a having an arcuate cross section having the same diameter and a width that fits with the concave portion 3C is formed in a downwardly convex manner, and the convex portion 4a is provided with a cutout window 4b.
Then, the guide groove 3b of the intermediate plate 3 fits into the ring-shaped guide protrusion 2b of the base plate 2, and the shaft part 3a and the counterbore hole 2a are rotatably fitted, and the shaft part
The lower end of a is fixed with a screw 6. Therefore, the guide protrusion 2b and guide groove 3b of the intermediate plate 3 slide on the base plate 2 with the shaft 3a as the center, as indicated by the arrows B and C in the figure.
It can be rotated freely in any direction. The mounting portion 3d of the intermediate plate 3 is fitted into the cutout window 4b of the mounting plate 4, and the convex portion 4a is fitted into the concave portion 3C so that the arcuate surfaces are indicated by arrows D and E in the figure.
It slides freely in the direction.

With this configuration, when using the rotary table 1, place, for example, a CRT display device on the mounting plate 4 so that its center of gravity is approximately centered.
To rotate it in the direction of the user, when the mounting plate 4 is pushed in the direction of rotation by hand, the sides of the concave part 3C and the convex part 4a are engaged, so rotational force is applied to the middle plate 3, and the middle plate 3 can be rotated on the base plate 2 and directed in a desired direction. At this time, the rubber feet are caused by friction on the rotary table 1.
Prevents slipping. To adjust the height of the screen, press the front part of the mounting plate 4 in the vertical direction with your hand, and the tilt of the mounting plate 4 will be adjusted by sliding the arcuate surfaces of the concave portion 3C and the convex portion 4a. It can be adjusted to the desired position. In this way, horizontal rotation and vertical adjustment can be easily performed, but the cable can be connected directly to, for example, a CRT display device mounted on the mounting plate 4 without going through the rotating table 1. Because of this, it is exposed as if hanging from the device, which is unfavorable in terms of appearance, and also has drawbacks such as being a hindrance to the operation of the device.

(d) Purpose of the invention The purpose of the present invention is to solve the above-mentioned drawbacks, and to provide a turntable that allows cable connections to be made with excellent appearance and operability.

(e) Structure of the Device In order to achieve the above object, the present invention includes a mounting plate member having an arc-shaped convex portion formed on the lower surface, a recess portion having an arcuate surface having the same diameter as the convex portion on the upper surface, and the lower surface. It consists of an intermediate plate member having a ring-shaped protrusion formed on its edge, and a base plate member having a groove formed on the upper surface at a position opposite to the protrusion of the intermediate plate member, and the convex portion of the mounting plate member is slidably fitted into a recess of the middle plate member, and a protrusion of the middle plate member is slidably fitted into a groove of the base plate member, wherein the base plate member and the middle plate are slidably fitted into a groove of the base plate member. A cable through hole is formed in the center of the plate member, and an oblong hole is formed along an arc at a position opposite to the cable through hole of the mounting plate member.

(f) Embodiment of the invention An embodiment of the invention will be described below with reference to FIGS. 4 to 6. 4 is a plan view showing an embodiment of the present invention, FIG. 5 is a sectional view taken along line F-F' in FIG. 4, and FIG. 6 is an exploded perspective view of FIG. 4.

As shown in FIGS. 4 to 6, the rotary table 1' is composed of a base plate 2', a middle plate 3', a mounting plate 4', and a screw plate 5' and screws 7 that connect these plates. A circular hole 9 is bored in the center of the base plate 2' through which a spirally wound cable 8 is inserted. A plurality of tapered protruding locking pieces 11 are provided upright.
Further, concentric circular grooves 12 are cut on the peripheral edge. The base plate 2' is fixed to a base 13, which is indicated by a two-dot chain line in FIG. A circular hole 14 is bored in the center of the middle plate 3', and the protruding locking piece 1 of the base plate 2'
1 are rotatably fitted and connected to each other by a hook-shaped locking portion 10. Further, a ring-shaped protrusion 15 is protruded from the lower peripheral edge of the middle plate 3', and is rotatably fitted into the groove 12 of the base plate 2'. It slides in the directions of arrows B and C in the figure. Furthermore, the upper surface of the middle plate 3' has a concave portion 3 having an arcuate cross section and a predetermined width.
Attachment portions 3d having screw holes are provided protruding from both sides of the center of C' and the recessed portion 3C'. The mounting plate 4' is provided with a downwardly convex convex portion 4a' having the same diameter and width as the concave portion 3C' of the middle plate 3' and a width that allows the concave portion 3C' to fit into the concave portion 3C'. An oblong hole 16 whose width is larger than the diameter of the circumscribed circle of the hook-shaped locking portion 10 of the base plate 2' is bored along the arc in the center of the hole, and cutout windows 4b are formed on both sides of the hole 16. There is. Cutout window 4b of mounting plate 4'
The mounting part 3d of the middle plate 3' is fitted into the mount part 3d, and the convex part 4
a' fits into the recess 3C', and the arcuate surface slides rotatably in the directions of arrows D and E in the figure. With this configuration, when using the rotating base 1', a CRT display device, for example, is placed and fixed on the mounting plate 4' so that its center of gravity is approximately centered, but the cable connected to the device is 8 is 2 as shown in Figure 5.
It is introduced through an introduction hole provided at the peripheral edge of the base 13 shown by the dotted chain line, wound spirally around a circular hole 9 drilled in the base plate 2', and then connected to a device. Therefore, even if the device is rotated horizontally in the directions of arrows B and C, and vertically in the directions of arrows D and E, winding and tensile forces are only applied to the spirally wound portion of the cable 8. No excessive force is applied to the cable 8 itself. As described above, by using the rotary table 1' of the present invention, unlike the conventional rotary table 1, the cable 8 of the device does not hang directly to the outside, spoiling the appearance or interfering with the operation. can be easily adjusted horizontally and vertically. In the above embodiment, a rotating table of a display device was described, but the same effect can be obtained even if the present invention is applied to a rotating table of a lighting device or the like.

(g) Effects of the invention As explained above, by using the rotary table of the present invention, it is extremely easy to adjust the device vertically and horizontally, and furthermore, the cable can be connected to the device by passing through the inside of the rotary table. Because of this, it has the effect of being excellent in appearance and operability.Furthermore, since the number of parts used is small and the shape is simple, it can be molded with synthetic resin etc., which also has the effect of reducing costs.

[Brief explanation of the drawing]

Fig. 1 is a plan view illustrating the conventional method, Fig. 2 is a sectional view taken along line A-A' in Fig. 1, Fig. 3 is an exploded perspective view of Fig. 1, and Fig. 4 shows an embodiment of the present invention. Plan view,
5 is a sectional view taken along line F-F' in FIG. 4, and FIG. 6 is an exploded perspective view of FIG. 4. In the figure, 1 and 1' are rotating tables, 2 and 2' are base plates,
3, 3' are middle plates, 4, 4' are mounting plates, 4b is a cutout window, 5, 5' are screw plates, 6, 7 are screws, 8 is a cable, 9 is a circular hole, 11 is a protruding lock Inside, 12 is a groove;
13 is a pedestal, 15 is a ring-shaped protrusion, and 16 is an oblong hole.

Claims (1)

[Scope of utility model registration request] A placing plate member having an arc-shaped convex portion formed thereon, an intermediate plate member having a concave portion having an arcuate arched surface having the same diameter as the convex portion of the aforementioned placing plate member, and a protruding portion formed on a peripheral portion thereof; and the intermediate plate member. and a base plate member having a groove formed at a position opposite to the protrusion, the protrusion of the placing plate member being slidably fitted into the recess of the intermediate plate member, and the protrusion of the intermediate plate member being slidably fitted into the recess of the intermediate plate member. The rotary table is configured by being slidably fitted into a groove of the base plate member, wherein a cable through hole is formed in the base plate member and the middle plate member, and the cable through hole of the mounting plate member is provided. A rotary table characterized in that an oblong hole is formed at a position facing the rotary table.