JP3184982B2 - TV door phone cord - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television door phone slave unit mounted on a wall of a house, such as a gate post, an entrance or the like, and more particularly, to a monitor camera in which the direction of a monitor camera can be freely adjusted.

[0002]

2. Description of the Related Art In general, there are many monitor cameras provided in the above-mentioned television doorphone handset, but the monitor camera can be freely changed by remote control from a room.
-38683. In this direction-changeable monitor camera, an intermediate frame is supported on a fixed frame by a motor so as to be able to tilt left and right, for example, and a movable frame on which the monitor camera is mounted is supported by a motor so as to be tiltable up and down, for example. The monitor camera is corrected in a desired direction by arbitrarily operating the lever switch provided on the parent device side by a cross operation.

[0003]

However, in the above-mentioned prior art, a motor for tilting the movable frame to which the monitor camera is attached is provided in the intermediate frame, so that the movable frame accompanying the tilting of the intermediate frame is provided. It is necessary to form a moving space for the driving motor, and if the tilt angle is increased, the moving space for these movable members becomes considerably large, which leads to an increase in the size of the whole child unit. With the movement of the motor for driving the movable frame, the wiring to this also swings, and it is easy to cause accidents such as disconnection at the connection part and disconnection of the wiring between members, and durability. There is still room for improvement in terms of aspect.

The present invention has been made in view of such a point, and the improvement of the tilt drive means of the camera support base on which the monitor camera is mounted leads to an increase in the size of the entire TV door phone handset. It is an object of the present invention to reduce the size and size of the driving motor without using it, and to improve the durability by using the driving motor without fear of damaging the wiring.

[0005]

As shown in FIG. 1, a television door phone slave unit according to the present invention includes a camera support base 8 having a monitor camera 3 mounted on a front surface thereof and a drive case 11 disposed on the back thereof. Mounted to be able to tilt up and down and left and right through the central ball fulcrum 13 and slide up and down on the camera support 8
Slide piece 34 and slide piece 34 that can slide left and right
Are attached to the ends of two push-pull rods 18 projecting forward and backward from the drive case 11 .
The ride pieces 34, 34 are respectively connected via ball fulcrums 19, 19, and the push / pull rods 18, 18 can be independently driven forward and backward using the motors 23, 23 and the screw feed means provided in the drive case 11, respectively. In this configuration, the camera support 8 is tilted up and down by one push / pull rod 18, and the camera support 8 is tilted left and right by the other push / pull rod 18 .

[0006]

By operating switches and the like provided on the parent device in the room to operate the motors 23 in the forward and reverse directions as appropriate, the push-pull rods 18 are advanced and retracted, thereby supporting the center ball fulcrum 13. The camera support 8 is tilted up and down or left and right, and the direction of the monitor camera 3 can be freely changed. At this time, the center ball fulcrum 13 and the push-pull rod 18
18 is on the back of the camera support 8,
In the movable space of. Therefore, the camera support 8 and the monitor camera 3 attached to the camera support 8 in the slave unit.
It is enough if there is enough space for moving parts and accessories.

[0007]

According to the present invention, the two motors 23 are fixed, the camera support 8 is tilted up and down and left and right about one point, and the two push-pull rods 18 are used.
Is only linearly advanced and retracted at the back of the camera support 8, so that the movable member is small and its movable range is reduced, and even if a large tilt angle is adopted to expand the imaging range. In addition, the size of the entire TV door phone slave unit can be reduced. Since both motors 23 can be fixed to the drive case 11, the durability can be improved without fear of disconnection or the like.

[0008] In particular, the push-pull rod 18 and the camera supporting stand 8 is connected by via a slidable slide piece 34
Therefore, the push / pull rod 18 can be driven forward and backward with a low load without forcibly tilting, and the motor 23 can be reduced in output accordingly, and the size can be further reduced.

[0009]

EXAMPLES Drawing shows the actual <br/>施例television doorphone entrance device according to the present invention, this is intended to be fitted mounted in a hole formed in the pillars and the entrance wall, not shown Is connected to the indoor parent device. The main body case 1 of this child device is embedded in a wall surface, and a panel case 2 is screwed and connected to the front surface thereof. A monitor camera 3 including a solid-state imaging device such as a CCD or a MOS type, a lens, and the like is provided on an upper portion of the main body case 1. A speaker 4 and a microphone 5 are accommodated in a lower portion of the main body case 1. A see-through window 6 facing the monitor camera 3 is attached to an upper portion of the panel case 2, and a push button 7 for calling a parent device is provided below the panel case 2. When the push button 7 is pressed, an image captured by the monitor camera 3 is displayed on a monitor television provided in the master unit for a predetermined period of time, and when the handset of the master unit is picked up, a telephone call becomes possible.

The monitor camera 3 is mounted via a printed wiring board 9 on the front surface of a camera support 8 whose attitude can be changed, as will be described later. Is illuminated by infrared irradiation to take an image.

The orientation of the camera support 8 can be arbitrarily changed and adjusted by remote control from the master unit. Below, to explain its detailed structure. 1 and 4, a drive case 11 is provided inside the main body case 1, and a ball fulcrum 1 is provided at a front end of a column 12 erected on the front surface of the drive case 11.
3 is provided. On the other hand, in the center of the back of the camera support 8, the center on the optical axis of the monitor camera 3
4 is provided, and the ball seat 14 is connected to the ball fulcrum 13
And the camera support 8 is moved horizontally through the center of the fulcrum 13 as shown in FIG.
It can tilt up and down around X, and can tilt left and right around vertical axis Y-Y. In order to prevent the camera support 8 from rotating around the camera optical axis, projections 15 projecting up, down, left, and right of the ball fulcrum 13 are engaged with notches 16 formed in the ball seat 14.

In FIG. 4, through holes 17 are formed in the front surface of the drive case 11 directly below and on the left side of the columns 12, and two push-pull rods 18 are respectively protruded from the front and back so as to be able to move forward and backward. A ball seat 2 having a ball fulcrum 19 provided at the tip of each push / pull rod 18 formed on the back surface of the camera support 8.
0. That is, the camera support 8
Is placed on the central ball seat 14 as shown in FIGS.
A pair of notches 33 are formed from below and from the left and right,
Slide up and down and slide left and right to each notch 33
The slide piece 34 that can be freely moved is fitted.
To the ball fulcrum 19 of each push-pull rod 18
A corresponding ball seat 20 is formed. The projection 21 provided at each ball fulcrum 19 engages with a notch 22 formed in each ball seat 20 to prevent the rotation of each push-pull rod 18 around the axis. In FIG. 5, two DC motors 23 for independently moving the push / pull rods 18 forward and backward are installed in the drive case 11 sideways, and the output of each motor 23 is a worm 24, a worm wheel 25, and a gear. 2
6, and transmitted through the intermediate gear 27 to the push / pull rod drive gear 28 at a reduced speed.

In FIG. 6, a support shaft 30 is provided at the center of a cylindrical boss 29 of a push / pull rod drive gear 28 made of plastic, and each push / pull rod 18 is slidable in the front-rear direction on the support shaft 30. Externally supported. A screw portion 31 is formed on the outer periphery of each push / pull rod 18, and the cylindrical boss 29 is provided with three claws 32 engaging with the screw portion 31 in a cantilever manner. By rotating the claw 32 in the forward or reverse direction, the push / pull rod 18, whose rotation has been prevented, is relatively screwed and moved forward and backward.

Although the drawing shows the drive structure of the push-pull rod 18 for tilting vertically downward, the drive structure of the push-pull rod 18 for tilting upper left and right is the same. In FIG. 9 , when the camera support 8 is tilted by the movement of the push / pull rod 18, the center of the ball seat 20 moves on an arc centered on the ball fulcrum 13 . Therefore, it is fixed on the back of the camera support 8.
The ball support at the tip of each push / pull rod 18
If the form of the point 19 is fitted connected, each push-pull rod 18 is a support shaft 30 and the pawl 32 is elastically deformed becomes et tilt <br/> Kukoto.

In this regard, in the present invention, the camera support 8 is
Ride pieces 34, 34 are slidably mounted, respectively,
Each push / pull rod 18 is moved with respect to the camera
As shown in FIG. 9 , the slide piece 34 is
Slides along the notch 33, so that the force for inclining the push-pull rod 18 does not work, so that the engagement pressure between the screw portion 31 and the claw 32 can be kept low, and the screw feed load is small.

[0016] As shown in FIG. 10, the push-pull rod 18
It is also possible to perform screw feed by a structure in which a U-shaped spring wire 35 engaging with the threaded portion 31 is inserted and mounted on the cylindrical boss 29 of the push-pull rod drive gear 28.

Although not shown, the camera support 8 and the support 12
And the connection with the push-pull rod 18, the ball fulcrum 13
19 may be provided on the camera support base 8 side, and the ball seats 14 and 20 may be provided on the column 12 side and the push / pull rod 18 side, respectively.

Although not shown, as a screw feed means for the push / pull rod 18, a screw portion may be formed on the push / pull rod drive gear 28, and a claw or the like engaged with the screw portion may be provided on the push / pull rod 18. .

[Brief description of the drawings]

FIG. 1 is a vertical sectional side view of a camera support base driving unit.

FIG. 2 is a perspective view of a camera support base driving unit.

FIG. 3 is an overall vertical side view.

FIG. 4 is an overall perspective view of a TV door phone handset.

FIG. 5 is a front view of a camera support base driving unit.

FIG. 6 is an exploded perspective view showing a push-pull rod and its driving gear.

FIG. 7 is a rear view of the camera support base shown in FIG . 1;

FIG. 8 is a main part showing a mounted state of the slide piece in FIG . 1;
FIG.

FIG. 9 illustrates a tilting operation of the camera support base in FIG .
FIG.

FIG. 10 shows a screw feed mechanism of a push / pull rod and a driving gear.
It is a perspective view which shows another Example of a structure.

[Explanation of symbols]

 Reference Signs List 3 Monitor camera 8 Camera support stand 11 Drive case 13.19 Ball fulcrum 18 Push-pull rod 23 Motor 33 Notch 34 Slide piece

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04N 7/18 H04N 5/232 H04N 5/225

Claims (1)

(57) [Claims] The method according to claim 1 monitor camera 3 camera support base 8 attached to the front surface, mounted for vertical and lateral tilt through the center of the sphere point (13) to the drive case 11 which is arranged on the back, the camera support base 8 With slide piece 34 which can slide up and down freely
Install the right and left slidable slide piece 34, the two push-pull rod 18, 18 tip of which is capable of advancing and retreating projected back and forth from the drive case 11, the slide piece 34
34 are connected via ball fulcrums 19, 19, respectively, and the push-pull rods 18, 18 are respectively connected to the drive case 11
The camera support base 8 is tilted up and down by one push / pull rod 18, and the other push / pull rod 18 is moved up and down by the push / pull rod 18. A TV door phone slave device configured to tilt the camera support base 8 right and left .