JPH02174475A - Display device - Google Patents

Abstract

PURPOSE:To eliminate the need for the angle adjustment and to avoid readjustment by stopping a display panel at an optional angle in an operating turning stroke after the display panel reaches the operating angle. CONSTITUTION:When an open button is depressed to release the lock of a panel case and the panel case 20 is turned up to a position A, a link lever 83 slides a slide lever 84 in the direction R, turns a lower side auxiliary lever 60 to lock a worm 57 and a gear 71, and the position of the panel case 20 is set to a position B offering a usual operating angle. When the position is changed from the position B to other angle, since the lock by a spiral spring 61 is not unlocked, so long as the panel case 20 is not moved smaller than a minimum angle position A, the adjustment change to an optional angle is attained. On the other hand, when the angle is restored smaller than the position A, the slide lever 84 is moved in the direction L to release the meshing between the worm 57 and the spur gear 71.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Field of Application) The present invention relates to a display device that is attached to the ceiling of a moving object such as an automobile.

(Prior Art) In recent years, image display devices using thin displays such as liquid crystal television receivers have been commercialized. This type of display device has a display panel mounted on a wall, adjusted to a predetermined angle, and viewed (used).
When not in use, store it on the wall or inside the device itself.

FIG. 9 is a perspective view showing an example of the display device as described above, in which a shows the stored state and b shows the storage state.

Indicates usage status. In the image display device 1, a panel housing 3 is attached to a storage housing 2 via a rotation adjustment mechanism 4.

The rotation adjustment mechanism 4 can adjust the opening angle between the two.

FIGS. 10 and 11 are a perspective view and a sectional view showing an example of the conventional rotation adjustment mechanism.

The rotation adjustment mechanism 4 is attached to a pair of plastic brackets 101 and 102 attached to the storage housing 2. Each rotating shaft member 1
Install 03 and 104. In the bracket 101.

Grooves 105°1 with different depths around the rotating shaft member 103
06 is divided into circular arcs of the same diameter. Rotating shaft member 103
A screw is formed at the tip, and a variable position member 107 such as a nut is attached to the screw. The variable position member 107 has one disc spring 108 between it and the bracket 101. A holding plate 109 and a bracket 110 to which the panel housing 3 is attached are coaxially passed through. This bracket 110 is.

A predetermined number of spheres 111 are arranged in a ring shape. These spheres 111 are fitted into one of the grooves 105 and 106 selectively.

112 is a brake drum whose inner diameter changes according to the force from the presser plate 109, and 113 is a play cue.

Note that the other rotating shaft member 102 is also attached to the panel side bracket 1.
15, and a brake shoe 114 is interposed between the brackets 102. 116 is a hole through which a wiring conductor is passed.

The rotation adjustment mechanism configured as described above operates at an angle θ from the X axis (Oo) shown in FIG. 12 when the open/close switch 5 (see FIG. 9) is pressed.
The range up to a (A position) (hereinafter referred to as free rotation section) is
In this case, it will open automatically due to its own weight. θb from the above A position
In the range up to (C position) (hereinafter referred to as the used rotation section), it is possible to stop at any position.

FIG. 13 is an explanatory diagram illustrating the above operating principle.

108' corresponds to the disc spring 108, and when the sphere 111 is fitted into the deep groove 105', the pressing force from the holding plate 109 is weak, so the inner diameter of the brake drum 112 expands, and the brake shoe 113 and the rotating shaft are The frictional force with the member 103 is reduced. As a result, the panel housing 3 can be freely opened.

Also, when one sphere 111 fits into the shallow groove 106'.

The pressing force by the presser plate 109 becomes stronger, and the brake drum 1
The inner diameter of the brake shoe 113 is pinched, and the frictional force between the brake shoe 113 and the rotating shaft member 103 increases. As a result, the panel housing 3 cannot be opened freely.

Stop at any position.

However, the display device with the above-mentioned conventional configuration.

Since it cannot be driven by a power source such as a motor, it cannot be remotely operated with a remote control.

Further, after the panel housing 3 is freely opened, it always stops at the initial angle (position A) of the rotation section in use. The A position is
This is the minimum angle of the rotation section that can be used. 2 Normally, viewing is rarely done at this angle.

A commonly used angle of choice is an angle greater than θa. Moreover, such a normal use angle is often approximately constant, for example, when viewing a display mounted on the ceiling of an automobile while sitting in the back seat. Therefore, in the rotation operation as shown in FIG. 12, the panel housing 3 that has stopped at the maximum angle of the free rotation section θa must be readjusted to the optimal angle using the remote control or manually.

Further, if the free rotation section is extended to the above-mentioned normal use angle, it is not possible to stop at an angle smaller than that.

(Problem to be Solved by the Invention) In the conventional display device, after the panel housing 3 moves freely in the free rotation section θa, it stops at the A position. Adjustments had to be made and the operation was complicated.

It is an object of the present invention to provide a display device which eliminates the above-mentioned problems and allows easy adjustment to the angle of normal use.

[Structure of the Invention] (Means for Solving the Problems) The present invention provides a display panel that switches between a storage state and a usage state by an opening/closing operation, and the display panel can be freely rotated from a storage state to a normal usage angle within a usage rotation section. After that, the rotation section used has a configuration that allows it to be stopped at any angle.

(Function) According to such a rotation adjustment mechanism, when opening the display panel from the stored state, it always opens automatically to the normal use angle. Therefore, when viewing at one normal use angle, there is no need to adjust the angle of the display panel.

(Embodiment) FIG. 1 is a configuration diagram illustrating an embodiment of a display device and its rotation adjustment mechanism according to the present invention.

In FIG. 1, the display device 1 includes a storage case 10.
The panel housing 20 and the panel housing 20 are constructed separately, and both are rotatable by mounting means 30 and 30' provided on the left and right sides. The panel housing 20 has a display panel 22 such as a liquid crystal panel, and the display panel 22 is fixed by a chassis 21 disposed around the side of the panel housing 20.

What are the mounting means 30 on the left and the mounting means 30' on the right?

A flat U-shaped connecting fitting 31 is shared, and a shaft member 321, a string-wound spring 33. l! l! The rubbing plate 34 and the shaft member 32', l! It is provided with a component consisting of an i-scraping plate 34'. The communication member 31 includes shaft members 32.3 provided through the panel housing 20 and the chassis 21, respectively.
2' is fixed. In this case, the left shaft member 32 has one string-wound spring 33 and a friction plate 34 between one head and the chassis 21, the friction plate 34 on the chassis 21 side, and the string-wound spring 33 on the head side. I'm going through it like that.

The attachment means 30' also includes a friction plate 34' passing between the shaft member 32' and the chassis 21. As a result, the panel housing 20 is rotatable around the Y-axis, and the friction plate 34°34' allows Fj! The frictional force makes it possible to stop at any position within the rotational range of use.

The storage case 10 has a base 40 that is a chassis.

A power source 50 consisting of a motor 51 and a gear group is mounted on the left side of the base 40. That is, the power source 50 is the motor 51
A worm 52 is attached to the shaft of the worm 52, and a spur gear 53 is attached to the worm 52. The cylindrical gear 54' is connected in this order, and then the spur gear 55 and the spur gear 56 are connected in this order to the spur gear 54 coaxial with the cylindrical gear 54'. The spur gear 56 is the coaxial worm 5
It has 7. FIG. 2 shows the configuration of the power source 50 as viewed from the side.

A worm 57, which is the final stage of the drive source 50, is coupled to a spur gear 61, as can be understood from FIG. This spur gear 61 has a small gear 61' mounted coaxially.

This small gear 61' is connected to a spur gear 62 fixed to the left shaft member 32. Each of these gears 61.61' 62
constitutes a transmission means 60, whereby the power from the power source 50 is transmitted via the shaft member 32 to a! It is transmitted to the panel housing 20 via the root plate 34.

On the other hand, the center of the figure 7 lever 58 is fixed to the shaft of the spur gear 55. This figure 7 lever 58 rotates in response to a slide lever 84 to be described later, and the fiJ letter transmission means 70
The spur gear 71 and the worm 57 are disengaged from each other and engaged with each other. One end of the figure 7 lever 58 is fixed to the shaft of the worm 57, and the other end rotatably supports rotational auxiliary levers 59 and 60 that vary up and down.

FIG. 3 shows these upper auxiliary lever 59 and lower auxiliary lever 6.
FIG. 2 is a perspective view illustrating the configuration of 0 in detail. As shown in FIG. 3, the upper auxiliary lever 59 and the lower auxiliary lever 60 are rotatable around a ball 41 protruding from the base 40. As shown in FIG. However, the lower auxiliary lever 60.

The ball 41 is passed through the elongated hole 60a. The lower auxiliary lever 60 has a bin 60b erected at one end. bottle 60b
is loosely fitted into an elongated hole 59a formed in the upper auxiliary lever 59, and also loosely fitted into a groove 42 formed in the base 40. In addition, the upper auxiliary lever 59 and the lower auxiliary lever 6
0 have a biasing force toward each other in a predetermined direction by the one-string spring 61.

Next, the rotation detection means 80 that detects whether the panel housing 20 is opened or closed is configured as follows.

Immediately, the spur gear 81 fixed to the right shaft member 32' has a predetermined cam surface (curved surfaces 82a, 82b, flat surface 82).
C) meshes with the cam gear 82 having a. The cam surface of the cam gear 82 is coupled to a slide lever 84 via a coupling lever 83. This slide lever 84 is always biased in the R (right) direction by a one-string spring 85.

The tip on the left (L) side extends to the position of the groove 42, as shown in FIG. A groove 84a cut out from the end surface is formed at the tip. This groove 84a faces the protruding piece 84b, which is the remaining part at the tip, and the slope 8
4c and the bin 6 from the lower auxiliary lever 60
0b is located.

The configuration of the embodiment has been described above, and its operation will be explained first.

FIG. 4 is an open perspective view of the panel housing 20. The storage case 10 has an open button 90 on the front side.
By pressing this button 90, the panel housing 20 is opened. Assuming that the horizontal plane of the storage case 10 is the X axis and the axis perpendicular to this is the Z axis, according to the above configuration, when opening the panel case 20 from the storage state, as shown in FIG.
The panel housing 20 stops at the normal use angle position IB within the use rotation section (AC section).

Figures 6, 7 and 8 are as described above.

It shows the operation of moving from the stored state to exceeding the minimum angular position A of the used rotation section and stopping at position B.

FIG. 6 in the stored state is a side view of the rotation detecting means 80 seen from the right side of FIG. Note that the arrow mark indicates the panel housing 20 in the stored state, and A, B, and C indicate the same positions as in FIG. 5, respectively. When the panel housing 20 is in the stored state.

The large diameter curved surface 82a of the cam 82 contacts the connection lever 83. As a result, the 1M coupling lever 84 is turned into a shape R (see FIG. 1) in which it is rotated in the E direction about the point P, and the slide lever 84 is positioned to the leftmost position.

FIG. 7 shows the positional relationship between the slide lever 84, the vertical auxiliary levers 59 and 60, and the V-shaped bar 58 in the above-mentioned stored state. When the slide lever 84 is shifted to the leftmost position, the bottle 60b hits the slope 84c of the pi 84a. For this reason,
The lower auxiliary lever 60 is biased in the H direction against the force of the one-string spring 61, and this biasing force causes the bar 5 to form a V shape.
Pull 8 in one direction. When the V-shaped bar 58 is pulled in one direction, the worm 57 and the gear 71 are separated, so that the panel housing 20 is moved by the friction plate 34 (34')
and l with chassis 21! j! It is stored in a state where it can be opened and closed freely against frictional forces.

When the free rotation operation open button 90 is pressed to release the lock of the panel housing 20 (as shown in the diagram), for the above reason.

The panel housing 20 opens in free fall mode. Cam gear 82
responds to this, so it rotates in the direction (see Figure 6). When the panel housing 20 rotates to the Δ position, the connection lever 83 separates from the first curved surface 82a and moves toward the flat surface 82c. Upon contact with the flat surface 82c, the connecting lever 83 is pushed in the E direction (see FIG. 1) and slides the slide lever 84 in the R direction.

The sliding operation of the slide lever 84 in the R direction is as follows.

The bottle 60b moves relatively inside the groove 84a and the protruding piece 84
In addition, there is a bottle 60b. This continues until it is located at the corner of the L groove 42. Before the projection piece 84b comes into contact with the bottle 60b, the V-shaped bar 58 maintains the state shown in FIG. 7.

After the protruding piece 84b contacts the bottle 60b, the lower auxiliary lever 60 is rotated in the G direction (see FIG. 7) against the force of the helical spring 61.

As a result, the V-shaped bar 58 rotates in the J direction (see FIG. 7), causing the worm 51 to mesh with the gear 71.

Now, when the bottle 60b is located at the corner of the groove 42, 0
The string-wound spring 61 moves the lower auxiliary lever 60 to the H position again.
Trying to get back on track. However, the bottle 60b.

Since the lower auxiliary lever 60 is at the bending angle from one side of the L groove 42, the lower auxiliary lever 60 is rotated by the force of the 0 string winding spring 61 so as to guide the bottle 60b to the other end of the L groove 42, and there locked. in this way.

When the pin 60b is locked at the end of the L groove, the engagement between the worm 57 and the gear 71 is locked.

Thus, in the locked state, the position of the panel housing 20 is the B position, that is, one normal use angle.

This position can be determined by the size of the groove 84a.

In this embodiment, when changing from the B position to another angle, the B
Even if you change the position to a smaller angle within the rotation range,
Even if the rotation angle is changed to a large one, the string-wound spring 61
Since the lock cannot be removed, the panel housing 20
It is possible to adjust the angle to any desired angle as long as it is not smaller than the rotation angle of the minimum angular position 1ffA of the rotation section used.

On the other hand, if it is returned to an angle smaller than the minimum angular position A.

The large diameter curved surface 82a of the cam gear 82 is connected to the connecting lever 8.
3, the slide lever 84 moves in the L direction and the slope 84C takes out the bottle 60b from the end of the L groove 42. When the bottle 60b comes out from the end of the L groove 42, the lower auxiliary lever 60 is moved to V by the force of the first string spring 61.
Rotate the bar 58 in the J direction to disengage the worm 57 and the spur gear 71. Providing the groove 84a in this way
The free rotation section will not be narrowed.

Note that the rotation operation in the first normal use section may be performed by using the motor 51 or by directly operating the panel housing 20.

In this way, in this embodiment, when opening from the stored state, the worm 51 is moved only during the period when the bottle 60b moves within the space 84a.
The time for meshing between the spur gear 71 and the spur gear 71 is delayed.

It is possible to stop at the 1 normal use angle B position beyond the use rotation section. As a result, the minimum inner position fiA of the rotation section used
This eliminates the trouble of readjusting to the normal use position @B.

[Effects of the Invention] As explained above, according to the present invention, the panel angle of the display device δ attached to the wall can be adjusted with one touch.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of a display device according to the present invention, FIGS. 2 and 3 are side views and perspective views showing the device in FIG. 1 in further detail, and FIG. 4 is a diagram similar to that shown in FIG. FIG. 5 is a perspective view showing the appearance of the device. 6, 7, and 8 are explanatory diagrams explaining the operation of the device shown in FIG. 1, FIG. 9 is a perspective view showing a conventional display device, and FIG. 10 and 11 are conventional rotation adjustment diagrams. A perspective view and a configuration diagram illustrating the mechanism, and FIGS. 12 and 13 are explanatory diagrams illustrating the operation of a conventional rotation adjustment mechanism. 10...Storage case, 20...Panel case, 21...
・Ship-shi. 30... Attachment means, 31... Communication lever, 32...
- Shaft member, 33... String-wound spring, 34... Friction plate, 40... Base. 41... Ball, 42... Groove, 50... Power source, 51... Motor. 57...Warm, 58...V-shaped bar, 59.
60... Upper and lower auxiliary levers, 60b... Bin, 61... String-wound spring, γ0... Transmission means,
11... Spur gear, 80... Rotation detection means, 82...
...Cam gear, 83...Connection lever, 84...Slide lever

Claims (1)

[Scope of Claims] A display device having a storage section and a display panel, and switching between a storage state and a usage state of the display panel by an opening/closing operation, wherein the display panel is moved from the storage state to a usage rotation section. The display panel may include a means for freely rotating the display panel to the normal use angle, and a rotation adjustment means that allows the display panel to be stopped at an arbitrary angle within the use rotation range after the display panel reaches the normal use angle. Characteristic display device.