JP2000112374A - Oscillation mechanism for monitor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a monitor to oscillate in all directions with a simple and sturdy structure. SOLUTION: A monitor 1 is supported so as to make it freely oscillate at least in either vertical or horizontal direction on the chassis (4) with supporting members 3a, (9a), a projected part 7b or a cylindrical cam 2 is rotated with the monitor 1 held at the neutral position in the oscillation by a holding member 10, and then, the monitor 1 is made to oscillate at least in one direction, vertically or horizontally, through the change in the abutting position of the projected part 7b and the cylindrical cam 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a monitor swing mechanism which is most suitable for swinging a monitor such as a car navigation system mounted on a vehicle.

[0002]

2. Description of the Related Art Conventionally, as a monitor as described above,
In some cases, a swing mechanism for changing the swing angle is provided in order to make it easy to see from a driver's seat or the like.

[0003] As a swing mechanism as described above, for example, as disclosed in Japanese Patent Laid-Open No. 6-48254,
Some monitors tilt the monitor up and down.

[0004]

However, if the monitor only swings up and down, the monitor screen may be difficult to see due to irregular reflection of light on the monitor screen, reflection of the surrounding scenery on the monitor screen, and the like. There are many.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and has as its object to provide a monitor swing mechanism capable of swinging a monitor in all directions with a simple and robust structure. It is.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a chassis body having a support member for swingably supporting a monitor in at least one of a vertical direction and a horizontal direction. Between the monitor and the monitor, a holding member for holding the monitor in the neutral position is provided, and a cylindrical cam is provided on one of the front surface of the chassis main body and the rear surface of the monitor, and the other is provided with a convex contact with the cylindrical cam. The monitor is swung in at least one of the vertical and horizontal directions by rotating the convex portion or the cylindrical cam provided on the front surface of the chassis body to change the contact position between the two. The present invention provides a monitor swing mechanism characterized by the following.

According to the present invention, the monitor is supported on the chassis body by the support member so as to swing freely in at least one of the vertical and horizontal directions, and the monitor is held in the neutral position by the holding member. When the part or the cylindrical cam is rotated, the contact position between the two changes, so that the monitor swings in at least one of the vertical and horizontal directions.

If one of the bearing members is a spherical portion and the other is a clamper holding the spherical portion, the bearing member is like a universal joint. .

According to a third aspect of the present invention, if the support member is configured such that one is a pin portion and the other is a pin hole portion for fitting and holding the pin portion, the monitor can be moved vertically or horizontally. You can swing only one side.

If the convex portion or the cylindrical cam is rotated by an electric motor, it is possible to remotely swing the monitor.

If the holding member is a compression spring, the structure is simplified.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings.

As shown in FIGS. 1 to 3, the monitor 1 is a horizontally elongated rectangular flat box, and has a monitor screen 1a on the front.

A cylindrical cam 2 is provided at the center of the rear surface of the monitor 1, and a stay 3 is provided at the center of the cylindrical cam 2 so as to project rearward. A portion 3a is formed.

The cylindrical cam 2 is a cam whose tip is made uneven, and as shown in FIG.
And the highest cam surface 2b are formed at a position of 180 degrees, and between the lowest cam surface 2a and the highest cam surface 2b are formed as intermediate curved cam surfaces 2c and 2d, respectively.

On the other hand, a ring-shaped large-diameter gear 7 is disposed on a bracket 6 provided on the chassis main body 4 (see FIG. 2A) so as to face the rear surface of the monitor 1. The centering hole 7a is fitted with a holding shaft 8 with a flange, and the holding shaft 8 is fixed to the bracket 6 with a plurality of screws 8a, so that the large-diameter gear 7 is rotatably supported by the bracket 6. Will be done.

A clamper 9 protruding forward is provided at the center of the holding shaft 8, and the spherical concave portion 9a of the clamper 9 embraces the spherical portion 3a of the stay 3 of the monitor 1. 4 allows the monitor 1 to be supported so as to swing freely in the vertical and horizontal directions. The clamper 9 and the spherical portion 3a of the stay 3 constitute a universal joint (universal joint).

On the front surface of the large-diameter gear 7, there is provided a convex portion 7b projecting forward.
Are always in contact with the respective cam surfaces 2a to 2d. The height of the protruding portion 7b is set to a neutral position where the screen 1a of the monitor 1 is directed straight forward in a state where the screen 1a is in contact with the lowest cam surface 2a of the cylindrical cam 2 (the state of FIG. 3A). It is set to become.

Between the presser shaft 8 and the cylindrical cam 2, the stay 3 and the outer periphery of the clamper 9 are fitted, and the monitor 1 is held at the neutral position by applying a forward urging force. A compression spring 10 is provided.

A motor bracket 11 is provided in parallel behind the bracket 6.
An electric motor 12 is fixed laterally to a rising portion 11a with a plurality of screws 13 and the bracket 1
In 1, a vertical worm wheel 15 meshing with the output worm 14 of the electric motor 12 and a small-diameter gear 16 meshing with the large-diameter gear 7 are rotatably supported by a support shaft 17.

If the swing mechanism is configured as described above,
Now, the convex portion 7b of the large diameter gear 7 is the lowest cam surface 2 of the cylindrical cam 2.
In the state of contact with a, the screen 1a of the monitor 1 is in the swinging neutral position (see reference numeral A in FIGS. 3A and 3B).

In FIG. 2B, when the large-diameter gear 7 is rotated counterclockwise L by 90 degrees by the electric motor 12, the projection 7b comes into contact with the intermediate cam surface 2c of the cylindrical cam 2. (Refer to the symbol B in FIG. 2 (b)).
Swings from the position A to the position B in the left-right direction LR, as shown in FIG. When the large-diameter gear 7 is further rotated counterclockwise L by 90 degrees, the projection 7
b contacts the highest cam surface 2b of the cylindrical cam 2 (see FIG. 2).
3B, the monitor 1 swings from the position A to the position C in the vertical direction UD as shown in FIG. 3B. Subsequently, the large-diameter gear 7 moves counterclockwise L by 9
When rotated by 0 degrees, the convex portion 7b comes into contact with the intermediate cam surface 2d of the cylindrical cam 2 (see the symbol D in FIG. 2 (b)), and the monitor 1 is as shown in FIG. 3 (a). Then, it swings from the position B to the position D in the left-right direction LR.

As described above, the monitor 1 is moved in the vertical direction UD and the horizontal direction LR with the clamper 9 as a fulcrum through the cylindrical cam 2 by the circular movement of the convex portion 7b accompanying the rotation of the large-diameter gear 7 by the electric motor 12. Swing in a mortar shape in all directions.

Therefore, irregular reflection of light on the screen 1a of the monitor 1, reflection of surrounding scenery on the monitor screen, and the like can be reduced, so that the screen 1a of the monitor 1 can be easily viewed.
Basically, the clamper 9 and the stay 3 with the spherical portion 3a (support member), the compression spring 10 (holding member), the convex portion 7
Since only b and the cylindrical cam 2 are provided, the mechanism is simple and robust.

Further, since the universal joint (universal joint) holds the spherical portion 3a of the stay 3 by the spherical concave portion 9a of the clamper 9, the monitor 1 can be swung smoothly in all directions. Further, since the convex portion 7b is rotated by the electric motor 12 together with the large-diameter gear 7, the monitor 1 can be swung easily and quickly by remote control using a switch or the like.

FIG. 4 shows a modification, in which the universal joint structure for holding the spherical portion 3a of the stay 3 with the spherical concave portion 9a of the clamper 9 is basically omitted from the above embodiment.
A bent portion 6a bent in the direction of the monitor 1 is formed on each of the upper and lower portions of the bracket 6, and a plate portion 2e is integrally and vertically extended from the cylindrical cam 2 on the rear surface of the monitor 1. 2e, a bent portion 2 bent in the direction of the chassis body 4 to enter the inside of each bent portion 6a of the bracket 6
f are respectively formed.

The monitor 1 can be swung only in the left-right direction by fitting and holding the outward pin portions 2g formed in the bent portions 2f in the pin holes 6b formed in the bent portions 6a. To do. Accordingly, the cylindrical cam 8 has the lowest cam surface 2a instead of the highest cam surface 2b.

A compression spring 10 is provided between the holding shaft 8 and the cylindrical cam 2 to hold the monitor 1 at the neutral position by applying a forward biasing force to the monitor 1. 10 is positioned by being fitted into the center projection 8b of the holding shaft 8.

With this swing mechanism, the monitor 1 can be smoothly swung only in the left-right direction by the pin 2g and the pin hole 6b. If the positions of the pin 2g and the pin hole 6b are changed, the monitor 1 can be swung only in the vertical direction.

In the above embodiment, the cylindrical cam 2 is provided on the monitor 1 side, and the projection 7b is provided on the chassis body 4 side.
Conversely, it can be provided. Although the large-diameter gear 7 is rotated by the electric motor 12, it can be rotated by a manual dial or the like.

[0031]

As is clear from the above description, the monitor swinging mechanism of the present invention supports the monitor on the chassis body with a support member so that the monitor can swing freely in at least one of the vertical direction and the horizontal direction. When the projection or the cylindrical cam is rotated while the monitor is held at the neutral position by the holding member, the contact position between the two is changed, so that the monitor swings in at least one of the vertical direction and the horizontal direction. Therefore, irregular reflection of light on the monitor screen, reflection of surrounding scenery on the monitor screen, and the like can be reduced, so that the monitor screen can be easily viewed. Basically, a support member such as a universal joint, a holding member such as a compression spring,
Since only the projection and the cylindrical cam are provided, the mechanism is simple and robust.

If one of the bearing members is a spherical portion and the other is a clamper holding the spherical portion, the support member becomes a universal joint (universal joint). You can swing smoothly in all directions.

According to a third aspect of the present invention, if one of the support members is a pin portion and the other is a pin hole portion for fitting and holding the pin portion, the monitor can be moved in either the vertical direction or the horizontal direction. You can smoothly swing only one side.

If the convex portion or the cylindrical cam is configured to be rotated by an electric motor, the monitor can be swung easily and quickly by remote control.

If the holding member is constituted by a compression spring, the structure is simplified.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a swing mechanism of a monitor according to the present invention.

2A and 2B show a swing mechanism, wherein FIG.
(B) is a front view.

3A and 3B show a swing mechanism, wherein FIG.
(B) is a side sectional view.

FIG. 4 is a side sectional view of a swing mechanism according to a modified example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Monitor 1a Screen 2 Cylindrical cam 2a-2d Cam surface 3 Stay 3a Spherical part (support member) 4 Chassis main body 7 Large diameter gear 7b Convex part 9 Clamper (support member) 10 Compression spring (holding member) 12 Electric motor

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Yoshihiko Goto 1-7-10 Kikuzumi, Minami-ku, Nagoya-shi, Aichi F-term in Harness Research Institute, Ltd. (Reference) 3D020 BA05 BC03 BD02 BD09 5G435 AA00 AA01 DD03 EE13 EE16 EE17 EE50 GG41 LL17

Claims (5)

[Claims] A support member is provided on a chassis body for swingably supporting a monitor in at least one of a vertical direction and a horizontal direction, and a monitor is held at a neutral position between the chassis body and the monitor. While the holding member is provided, a cylindrical cam is provided on one of the front surface of the chassis main body and the rear surface of the monitor, and the other is provided with a convex portion abutting on the cylindrical cam, and the convex portion provided on the front surface of the chassis main body or A monitor swing mechanism characterized in that the monitor is swung in at least one of the vertical and horizontal directions by rotating a cylindrical cam to change the contact position between the two. 2. One of the bearing members is a spherical portion,
2. The monitor swing mechanism according to claim 1, wherein the other is a clamper holding the spherical portion. 3. One of the bearing members is a pin portion,
2. The monitor swing mechanism according to claim 1, wherein the other is a pin hole for fitting and holding the pin. 4. The monitor swinging mechanism according to claim 1, wherein the convex portion or the cylindrical cam is rotated by an electric motor. 5. The monitor swing mechanism according to claim 1, wherein said holding member is a compression spring.