JP3064714B2 - Tilt stand - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tilt stand with a rotation stopper mechanism on which an image display device is mounted and whose screen position can be adjusted.

[0002]

2. Description of the Related Art FIG. 5 is a view showing a state in which an image display device B is mounted on a tilt stand A, FIG. 6 is a perspective view of a conventional tilt stand having a rotation angle stopper mechanism of this type, and FIG.
FIG. 2 is a plan view b and a cross-sectional view c of a main part of a spacer a and a concave groove into which the spacer a is fitted. In the drawing, reference numeral 1 denotes a rotary table having a bottom surface formed into a convex spherical surface, and 2 denotes a pedestal for supporting the rotary table 1. The central portion is formed into a concave spherical surface, and a rotary shaft 3 is erected at the central portion. . Reference numeral 4 denotes an elongated hole provided in the turntable 1;
6 is a sliding spacer, and 6 is a pressing member thereof.
Is a screw which is threaded by a nut 8 from the back surface of the pedestal 2 through the pressing member 6 and the rotating shaft 3. 9 is a crescent-shaped claw provided at the lower end of the spacer 5 and 10 is this claw 9
Are fitted, and the concave groove 11 provided in the pedestal 2 is a rotation stopper surface thereof.

That is, this structure has a rotating table 1 and a pedestal 2 which are product mounting tables, a spacer 5 provided between them and serving as a rotating shaft and a stopper, and fixing these with screws 7 and nuts 8. The pressing member 6 is composed of a total of four types of parts.

Next, the operation will be described. That is, FIG.
b and c show the operation, and when the turntable 1 is rotated, the rotation angle is adjusted by simultaneously rotating the spacer 5 in the elongated hole 4 (left rotation C or FIG. 5 in FIG. 5). Right rotation D). The rotation is stopped when the side surface 5a comes into contact with the stopper surface 11 of the concave groove 10 as shown by bc in FIG. Note that a in the figure shows a state when the rotation angle is 0 °, and b and c show a state when the rotation angle is 90 ° on both sides.

Next, when adjusting the tilt angle upward or downward (E or F direction in FIG. 5) in the tilt angle adjustment shown in FIG. When the turntable 1 is operated by some force, the finger may be cut off when an opening 4a is generated between the openings and the finger is inserted into the opening, and there is a very inconvenient surface for safety.

[0006]

Since the conventional tilt stand is constructed as described above, in addition to the turntable and the pedestal, a spacer with a rotation stopper mechanism and a holder (holding member) for fixing them are required. Therefore, the number of parts increases, and a slit is formed in the turntable due to the structure of the tilt angle, so that the mechanism is inadequate in terms of safety.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a two-piece structure can be realized by eliminating the need for a spacer and a holder between the turntable and the pedestal. The purpose is to gain.

[0008]

A tilt stand with a rotation angle stopper mechanism according to the present invention has a rib-shaped stopper protruding along the lower surface of a guide slot on a rotary table side, and a pedestal on which the stopper is mounted. A symmetrical fan-shaped concave groove into which the rib is fitted is disposed on the side, and a rotation stopper mechanism is incorporated in two parts.

[0009]

The tilt stand with a rotation angle stopper mechanism according to the present invention is formed by fitting a concave groove provided on a pedestal with a rib provided on a lower surface of a long hole of a rotary base.
The rotation of the rib of the turntable can be adjusted within the range of the concave groove of the pedestal.

[0010]

[Embodiment 1] An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view according to an embodiment of the present invention, and FIG. 2 is a view taken in the direction of the arrow Z (the pedestal is shown in cross section). In the figure, reference numeral 1 denotes a rotary table serving as a product mounting table, 2 denotes a base thereof, 3 denotes a rotary shaft, and 4 denotes a long hole. 1a
Is a rib for a rotation stopper protruding along the lower surface of the long hole 4 of the turntable 1, 2a is a concave groove provided on the pedestal 2,
A pair of symmetrical fan-shaped concave grooves 21 and 22 are provided on both sides around a center hole 23 through which the rotating shaft 3 passes. The rib 1a is fitted into the concave groove 2a as shown in FIG. In the figure, reference numeral 7 denotes a mounting screw which is screwed into the rotary shaft 3 through the turntable 1 via the spring washer 24 and the washer 25.

Next, the operation will be described with reference to FIG. 3A shows the tilt angle standard position, b shows the tilt angle upward maximum position, and c shows the rotational angle maximum positions + X ° and -X ° when the tilt angle is the downward maximum position. That is, ±
It can be seen that when X °, the rib 1a hits the stopper wall 2d of the concave groove 2a and its rotation is braked. The arrow Y in the figure indicates the front.

With the above-described structure, the rotation stopper mechanism can be completely formed into a two-piece structure, and a part of the elongated hole 4 is formed as an opening 4a on the bottom surface as in the related art. There is no danger of emission, which is advantageous for safety. That is, the concave groove 2a of the pedestal 2 and the slot 4 of the turntable 1
Does not overlap at any tilt angle and rotation angle, and there is no safety-improper opening in the movable range.

Embodiment 2 FIG. Also, in FIGS. 1 and 2, by subjecting one of the opposing sliding surfaces 1b and 2b of the turntable 1 and the pedestal 2 to graining, friction between the surfaces can be reduced. This can eliminate the need for a lubricant, a lubricating sheet, and the like.

Embodiment 3 FIG. As shown in FIG. 4, the rotary shaft 3 is provided with a rib 3b and a slit 3 in a screw hole 3a of the shaft.
By forming c, it is possible to prevent sinking due to molding on the wall surface 3d of the screw hole and prevent the screw hole from becoming large, and secure the strength against the tightening torque of the screw by attaching a rib. be able to. 3A is a plan view of the rotating shaft, b is a cross-sectional view, and c is a perspective view.

[0015]

As described above, according to the present invention, the rotary stopper mechanism is integrated into the turntable and the pedestal to form a two-piece structure, so that the apparatus can be inexpensive, and the precision and safety are high. There is an effect that something can be obtained.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a configuration of a tilt stand with a rotation stopper mechanism according to an embodiment of the present invention.

FIG. 2 is an exploded sectional view of a tilt stand with a rotation stopper mechanism according to one embodiment of the present invention.

FIG. 3 is an operation explanatory diagram in the embodiment of the present invention;
a indicates a tilt angle standard position, b indicates a tilt angle upward maximum position, and c indicates a tilt angle downward maximum position.

FIG. 4 is a plan view a, a cross-sectional view b, and a perspective view c showing a structure of a rotating shaft erected on a pedestal according to an embodiment of the present invention.

FIG. 5 is a perspective view showing a tilt stand in a state where a conventional image display device is mounted.

FIG. 6 is an exploded perspective view showing a conventional tilt stand with a rotation stopper mechanism.

FIG. 7 is a component explanatory view showing a mechanism of a conventional rotation stopper.

FIG. 8 is a diagram illustrating the operation of a conventional tilt stand.

9A and 9B are a front view a and a side view b showing a defect of the conventional tilt stand.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 rotating table 1a rib for stopper 2 pedestal 2a concave groove 3 rotating shaft 4 elongated hole for guide

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-213890 (JP, A) JP-A-4-263289 (JP, A) JP-A-2-218183 (JP, U) JP-A-59 128996 (JP, U) Actually open sho 59-121972 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) H04N 5/64-5/655 G09F 9/00

Claims (1)

(57) [Claims] 1. A pedestal having a concave spherical surface on its upper surface and a rotating shaft set up at the center thereof, and a guide slot having a convex spherical surface mounted on the concave spherical surface and fitted with the rotating shaft portion. A rotatable table provided on the lower surface of the guide slot, and a rotatable stopper rib protruding from the lower surface of the guide slot. A tilt stand, wherein the fan is provided with a fan-shaped concave groove which is fitted into the pedestal and is rotatable by a predetermined angle on both sides thereof around a rotation axis.