JPS636558Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field of the invention] This invention relates to a tilt-swivel device that can rotate an equipment such as a television receiver in two directions about a vertical axis and a horizontal axis. .

[Technical background of the invention and its problems]

Conventionally, as shown in FIG. 1, a rotary cylinder 2 is fitted onto a stand 1 so as to be rotatable through 360° about a vertical axis, and a spherical recess 3 is formed on the upper surface of the rotary cylinder 2. A spherical part 5 matching the spherical recess 3 is formed on the lower surface of the base 4 on which the image receiver is placed, a guide hole 6 long in one direction is formed in the spherical recess 3, and a guide boss 7 protruding from the spherical part 5 is formed. There is one that fits into the guide hole 6 and has a stopper 8 screwed to the lower end of the guide boss 7. Thereby, the television receiver can be directed in any direction by the 360° rotational movement of the rotary cylinder 2 and the rotational movement of the base 4.

However, although the guide boss 7 and the guide hole 6 also serve to prevent relative movement around the vertical axis, it is difficult to form multiple sets of these on a spherical surface, and therefore It lacks strength as a rotation prevention structure centered on. Accordingly, the stopper 8 has only one set of retaining structures, and the external force is concentrated in one place, making it easy to break. Furthermore, when leading out a cable from inside a television receiver, etc., it is necessary to lead out the cable from the center of rotation in order to reduce vibration of the cable, but the guide hole 6 and guide boss 7 occupy the center position. It is also inconvenient to run cables through it.

In addition, as shown in FIG.
from the center of the bottom of the spherical shell 10 to the pedestal 1.
There is one in which a screw 14 is protruded into an opening 13 formed in 1, a spacer 15 is fitted onto the screw 14, and a spherical stopper plate 16 is attached. Therefore, to the extent that the screw 14 moves within the opening 13, the spherical shell 10 can move together with the television receiver 9 in three axes.

However, in order to widen the rotation range, the opening 13 must be expanded not only in length but also in width, and its strength is extremely low, making it unsuitable for supporting heavy objects such as the television receiver 9. be.
Unless the stopper plate 16 is also tightened with a single screw 14, the rotation range will be small and the tightening force will be weak. Furthermore, it is difficult to pull out the cable from the center of the spherical shell 10.

[Purpose of invention]

This idea was created in view of the above points, and it allows the equipment to be moved in any direction around the horizontal and vertical axes while ensuring strength and satisfying the conditions for pulling the cable out from the center of the bottom of the equipment. The purpose of this invention is to provide a tilt/swivel device that can be turned to

[Summary of the idea]

This idea involves attaching a cradle to a stand so that it can rotate freely about its vertical axis, and connecting a base that holds equipment such as a television receiver to this cradle so that it can freely rotate about its horizontal axis. This allows the device to be oriented in any direction with horizontal and vertical axes, and as a means of connecting the pedestal and base, a sliding curved surface that curves in only one direction with the same horizontal axis as the center line is provided on the joint surface of both. and a plurality of elongated guide holes and guide bosses that fit into these sliding curved surfaces to prevent movement around the vertical axis while allowing relative movement around the horizontal axis. form a set, fix stoppers to these guide bosses to prevent them from coming off, and
The guide hole moves the guide boss in one direction, and although the length is necessary, the area can be reduced and the strength can be increased.In addition, the guide boss and guide hole are not spherical, but have sliding surfaces that curve only in one direction. Formed on a curved surface, it is easy to form multiple sets, and the guide boss and guide hole are fitted at multiple locations to firmly fix movement around the vertical axis.Furthermore, the guide boss is prevented from coming out at multiple locations. By doing so, it is possible to increase the bonding strength between the pedestal and the base, and also to allow the cable to be pulled out from the center of the guide hole, thereby minimizing the deflection of the cable.

[Example of idea]

A first embodiment of this invention will be explained based on FIGS. 3 to 9. 20 is a stand. This stand 20 has a large opening at the center, and has two circular expansion surfaces 21 and 22 formed at the top and bottom. The flange 2 of the pedestal 23 is attached to the upper expanded surface 21.
4 is fitted so as to be rotatable about a vertical axis. This pedestal 23 is fixed upward by joining the outer periphery of a disk 25 screwed to the lower surface of the pedestal 23 to the expanded surface 22. A large rectangular opening 26 is formed in the center of the disc 25, as shown in FIG. FIG. 6 is a bottom view with the disc 25 removed, and the inner circumferential surface of the stand 20 is formed with a large diameter portion 27 whose inner diameter increases over a range of θ ₁ , and the lower outer circumference of the pedestal 23. The surface has a large diameter portion 2 whose outer diameter increases over a range of θ ₂ .
8 are formed, and stopper surfaces 29, 30 are formed at both ends of these large diameter portions 27, 28. That is, the rotation range of the pedestal 23 is θ ₁ -θ ₂ .

Next, a base 31 is provided. The base 31 is for holding equipment such as a television receiver, and may be formed integrally with the lower part of the equipment or may be provided independently. The pedestal 23 only needs to hold the base 31 so as to be rotatable in only one direction around the horizontal axis, and therefore, the opposing surfaces of both have one direction around the same horizontal axis as the center line. Sliding curved surfaces 32 and 33 are formed that are curved only in this direction (in other words, form a part of the cylindrical outer periphery). The sliding curved surface 32 is concave and the sliding curved surface 3
The relationship is that 3 is convex, but the reverse is also possible.

Thus, elongated guide holes 34 are formed on both sides of the sliding curved surface 32 of the base 31 along the curved direction, and guides are slidably fitted into the guide holes 34 on both sides of the sliding curved surface 33 of the base 31. boss 35
is installed protrudingly. Therefore, a cable insertion hole 36 can be formed between these guide bosses 35, and an opening 37 is formed in the pedestal 23 opposite to this cable insertion hole 36. The guide boss 35 is prevented from coming off upward by fixing a stopper 38 formed of elastic plastic to the rear lower end fitted in the guide hole 34 with two screws 40, respectively. ,
When both ends of the stopper 38 come into contact with the end surfaces of the recess 39 formed on the back surface of the pedestal 23, the base 31
The rotation range of is determined.

In such a configuration, the pedestal 23 rotates about its vertical axis, and the base 31 rotates about its horizontal axis, so that the orientation of the equipment, such as a television receiver, held on the base 31 can be changed. can be changed freely. Since the pedestal 23 rotates about its own vertical axis, the guide hole 34 may be an elongated one that allows the guide boss 35 of the base 31 to slide in only one direction, and the opening area can be small and there is no space between the guide hole 34 and the opening 37. The strength of the pedestal 23 is also strong because it is partitioned by ribs. In addition, the guide hole 34 and the guide boss 3
5 is not a spherical surface but is formed as a sliding curved surface 32 that curves only in one direction, so it is easy to mold two pieces each. Therefore, the guide boss 35
and the guide hole 34 are fitted together to form the pedestal 23.
The movement around the vertical axis is fixed, but since it is fixed at two places, the external force is not concentrated in one place. Since the stopper 38 also prevents the base 31 from coming off at two locations, external force is not concentrated in one location. Therefore, the connection between the base 31 and the pedestal 23 is strong. In addition, the base 31 can form a cable insertion hole 36 between the two guide bosses 35, so that the cable led out from the television receiver etc. is always located at the center of rotation of the base 31, and the cable is prevented from swinging. It can be prevented.

Note that the guide boss 35 may be formed on the pedestal 23 and the guide hole 34 in the base 31 may be formed. In addition, due to the tightening force of the screw 40, the stopper 38 and the pedestal 23 are
The base 31 can be fixed in any direction by the frictional force between the base 31 and the base 31.

Next, a second embodiment of this invention is shown in FIG. The same reference numerals will be used for the same parts as in the previous embodiment, and the description will be omitted (the same applies hereinafter). In this embodiment, a large number of locking parts 41 are formed along the longitudinal edge of the guide hole 34 of the pedestal 32, and a stopper 42 made of a plate spring is screwed to the guide boss 35 of the base 31. The base 31 is formed by forming protrusions 43 on both ends that elastically engage with the locking parts 41, and selecting the locking parts 41 with which the projections 43 engage.
is fixed in any direction.

Therefore, the stopper 42 made of a leaf spring has excellent elasticity, and there is no need to adjust the frictional force by tightening the screw, and the durability is improved.

Furthermore, a third embodiment of this invention is shown in FIGS. 11 and 12. In this embodiment as well, a stopper 4 with a leaf spring is attached to the guide boss 35 fitted in the guide hole 34.
4 is screwed, but the guide boss 34
The lower surface is positioned slightly inward from the lower surface of the guide hole 34, and when the stopper 44 is screwed, the stopper 44 is curved in a direction perpendicular to the longitudinal direction of the guide hole 34 to obtain a frictional force against the pedestal 23. It is something. This stopper 44 is also highly elastic, so there is no need to adjust the tightening force of the screw. Also, stoppa 4
4 itself has a nearly flat plate shape and is easy to manufacture.

〔Effect of the invention〕

Since this invention is configured as described above, the equipment can be directed in any direction by rotating the cradle and rotating the base, and the cradle and the base are connected so as to be rotatable in only one direction. As a result, sliding curved surfaces that curve only in one direction are formed on the facing surfaces of the pedestal and the base, and multiple sets of guide holes and guide bosses can be easily formed on these sliding curved surfaces. The guide holes are elongated and allow the guide boss to move only in one direction, making it possible to increase the strength of the pedestal with a small opening area. The movement around the vertical axis is fixed, but the engagement force is dispersed by fixing it at multiple locations, and in line with this, the guide boss is prevented from coming off by multiple stoppers, and the force for preventing it from coming off is dispersed. The strength of the connection between the pedestal and the base can be increased, and it is also possible to form a cable insertion hole in the center of the base, allowing the cable to be pulled out from the center of rotation of the base to reduce vibration. It has the following effects.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional side view showing one conventional example, Fig. 2 is a longitudinal sectional front view showing another conventional example, and Figs. 3 to 9 relate to the first embodiment of this invention. Figure 3 is a vertical side view (A-A in Figure 5).
Fig. 4 is a longitudinal sectional side view of the lined section), and Fig. 4 is a longitudinal sectional front view (Fig.
5 is a bottom view, 6 is a bottom view with the disk removed, 7
The figure is a longitudinal cross-sectional side view taken along the line C-C in Figure 4, Figure 8 is a perspective view of a portion of the bottom of the base, Figure 9 is a perspective view of the cradle viewed from above, and Figure 10 is a perspective view of the base. A vertical cross-sectional side view of a part of the second embodiment of the invention showing an enlarged view of the state of connection between the pedestal and the base;
FIG. 11 is a partial longitudinal sectional side view showing the connection state between the pedestal and the base in an enlarged manner according to the third embodiment of this invention, and FIG. 12 is a line DD in FIG. 11. FIG. 20...stand, 23...cradle, 31...base, 32-33...sliding curved surface, 34...guide hole, 35...guide boss, 36...cable insertion hole, 37...opening, 38 ...Stoppa, 42...
Stoppa, 44...stoppa.

Claims (1)

[Scope of utility model claims] A pedestal is connected to a stand so that it can rotate freely about a vertical axis while defining a rotation range with a stopper, and the upper surface of the pedestal and the lower surface of the base that holds the equipment are connected to the same horizontal axis as the center line. A sliding curved surface is formed that curves in only one direction, and by fitting together, the base rotates about the horizontal axis relative to the pedestal while preventing rotational movement about the vertical axis. A plurality of pairs of elongated guide holes and guide bosses are formed on each of the sliding curved surfaces, and a stopper is fixed to each end face of the guide bosses, and a stopper is fixed to each end surface of the guide bosses to prevent the sliding movement of the base. A tilt and swivel device characterized in that a cable insertion hole is formed in the center of a dynamic curved surface for leading a cable from inside and to the outside through an opening of the pedestal.