JPH10224045A - Tilt swivel mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensive tilt swivel mechanism excellent in stability at the time of horizontal turn. SOLUTION: An annular guide rib 1a provided on a fixed base 1 is engaged slidingly with an annular groove 2a made in a swivel movable base 2 thus obtaining an annular swivel movable base 2. A protrusion 2b provided on the swivel movable base 2 is combined with a recess 3b made in a tilt movable base 3 such that the protrusion 2b slides in the recess 3b at the time of inclination and the protrusion 2b is engaged with the recess 3b at the time of horizontal turn so that the swivel movable base 2 and the tilt movable base 3 turn horizontally and integrally.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the tilt and tilt of electronic equipment.
Related to swivel mechanism.

[0002]

2. Description of the Related Art In a conventional tilt and swivel mechanism, a disk-shaped swivel movable base is horizontally rotated by using a shaft portion at the center of a fixed base as a guide, so that the swivel movable base becomes a large-sized part and a swivel movable. An expensive tilt and swivel mechanism was used because the table was made of an expensive material having low frictional resistance and high wear resistance.

Further, since the tilt movable base does not rotate integrally with the swivel movable base during horizontal rotation, the center of gravity of the mounted electronic equipment and the tilt center of the tilt movable base are shifted in the front-rear direction of the electronic equipment. When the tilt movable base rotates with respect to the swivel movable base, the static friction force of the contact surfaces of the two moves into kinetic frictional force, and the frictional force for maintaining the tilt angle of the tilt movable base decreases, resulting in a tilt movable base. However, there was a problem that they tilted at the same time.

[0004] Japanese Patent Publication No. Hei 7-15197 discloses a related tilt swivel mechanism.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a tilt / swivel mechanism which can be inexpensive by minimizing the amount of expensive materials to be used and which has good stability of the tilt movable base during horizontal rotation. I do.

[0006]

The object of the present invention is to provide a guide rib on a fixed base, a groove provided on a swivel movable base engages with and slides on the guide brim, and horizontally rotates the swivel movable base using the guide rib as a guide. As a result, the swivel movable base can be formed into an annular shape, and an inexpensive tilt / swivel mechanism can be provided.In addition, a protrusion is provided on the surface of the swivel movable base that is in contact with the tilt movable base, and the swivel movable base is horizontally rotated. By providing a concave portion which is sometimes engaged with the projecting portion and not engaged with the projecting portion at the time of tilting, the provision of a tilt and swivel mechanism with good stability is achieved.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a longitudinal sectional view of the tilt and swivel mechanism of the present invention, FIG. 2 is a partial detailed view thereof, and FIG. 3 is an exploded perspective view.

The tilt and swivel mechanism includes a fixed base 1, a swivel movable base 2 mounted on the upper surface of the fixed base, a tilt movable base 3 mounted on the swivel movable base, and an assembly in which these are superposed. And a screw 5.

The fixed base 1 is provided with an annular guide rib 1a integrally formed. On the other hand, swivel movable base 2
The guide rib 1a is provided with an annular groove 2a concentric with the guide rib 1a. When the swivel movable base 2 is mounted on the fixed base 1, the guide rib 1a and the groove 2a engage and slide with each other. It is guided and turns horizontally. Therefore, the shape in the vicinity of the fixed base shaft portion 1b becomes unnecessary, and can be formed in an annular shape, so that the amount of expensive materials used can be reduced and the cost can be reduced.

The swivel movable base 2 is also provided with a protrusion 2b on a surface that contacts the tilt movable base 3. On the other hand, a concave portion 3b is provided on the convex spherical surface 3a of the tilt movable base 3. When mounting the tilt movable base 3 on the swivel movable base 2, the tilt movable base 3 is mounted such that the protrusion 2b and the recess 3b are combined. Recess 3b
The length in the tilting direction along the convex spherical surface 3a is set to a length that does not engage with the projection 2b within the tilting range, and the width in the horizontal rotation direction is set to a width that engages with the projection 2b with a slight gap. At the time of tilt operation, the tilt movable base 3 tilts, and at the time of swivel operation, the tilt movable base 3 and the swivel movable base 2 reliably and horizontally rotate integrally.

[0011]

According to the present invention, it is possible to provide a tilt swivel mechanism which can be manufactured at low cost and has good stability during horizontal rotation.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of an embodiment of the present invention.

FIG. 2 is a partial sectional view of a longitudinal sectional view of the embodiment of the present invention.

FIG. 3 is an exploded perspective view of the embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Fixed base, 1a ... Guide rib, 1b ... Fixed base shaft part, 2
... Swivel movable base, 2a ... groove, 2b ... projection, 3 ... tilt movable base, 3a ... convex spherical surface, 3b ... recessed part, 3c ... rib
4 ... cap, 5 ... screw.

Claims (1)

[Claims] 1. A tilt and swivel mechanism comprising a fixed base, a swivel movable base and a tilt movable base, a fixed base provided at a lowermost portion having a concave spherical surface and an annular guide rib, and a tilt movable having a convex spherical surface at a bottom. Table, between the convex spherical surface and the fixed base, is provided in an annular shape concentric with the guide rib, has a spherical surface corresponding to the convex and concave spherical surfaces on the front and back surfaces, and a side of the fixed base that is in contact with the concave spherical surface. The swivel movable base having an annular groove concentric with the guide rib, and the swivel movable base is centered by engaging and slidingly contacting the guide rib of the fixed base and the groove of the swivel movable base. The swivel movable base has a concave part in a part of the convex spherical surface, and has a protrusion on a side of the swivel movable base that is in contact with the convex spherical surface, and the tilt part moves upward when the tilt operation is performed. The tilt movable base is tilted by sliding without engaging the inside of the concave part, and the swivel operation is such that the protrusion engages with the concave part and the tilt movable base and the swivel movable base integrally rotate horizontally. Features a tilt and swivel mechanism.