JP4749564B2 - Tilt lock mechanism, liquid crystal panel including the same mechanism, and rack mount liquid crystal panel - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a tilt lock mechanism such as a liquid crystal panel, a liquid crystal panel including the mechanism, and a rack mount liquid crystal panel, and includes a tilt lock mechanism and a mechanism for easily adjusting a viewing angle of a liquid crystal panel mounted on a rack. The present invention relates to a liquid crystal panel for rack mounting or the like.
[0002]
[Prior art]
FIG. 5 shows an example of a conventional liquid crystal display device. In a conventional liquid crystal display device, a liquid crystal panel 1 provided on a frame body 2 is rotatably attached to a bracket 5 erected on a base 4 by a tilt mechanism 3. The tilt mechanism 3 is inserted into a shaft protruding from the bracket 5 through a rotating bracket 6 screwed to the frame body 2 and through an intermediate member 7 and a spring 8, and is inserted through a washer 10 with a nut 9. The inclination angle of the liquid crystal panel 1 can be arbitrarily set by fixing and pressing the intermediate member 7 with a spring force to give an appropriate frictional force to the rotating bracket 6.
[0003]
[Problems to be solved by the invention]
The liquid crystal display device of FIG. 5 shows a stepless tilt mechanism. In this liquid crystal display device, when the liquid crystal panel 1 is locked at an arbitrary inclination angle, it is necessary to provide a mechanism for further restraining the bracket 5 and the rotating bracket 6. Such a tilt mechanism has a simple structure. In addition, it is difficult to obtain a lock mechanism that can operate the lock mechanism from the front. For example, the liquid crystal panel is used for various purposes, and when the liquid crystal panel is mounted on a vehicle such as a relay car, the liquid crystal panel is mounted at an arbitrary position from the upper part to the lower part of the rack. If the liquid crystal panel is mounted on the top of the rack, the operator will look up from the top and look at the display on the liquid crystal panel, and adjust the tilt angle to obtain the optimal viewing angle of the liquid crystal panel. Therefore, it is necessary to lock the tilt angle so that it does not fluctuate easily.
[0004]
The present invention has been made in view of the above problems, and a tilt lock mechanism capable of locking a liquid crystal panel at an arbitrary tilt angle, a liquid crystal panel including the mechanism, and a rack mount liquid crystal panel suitable for rack mounting. Is intended to provide.
[0005]
[Means for Solving the Problems]
The present invention has been made to solve the above-described problems, and the invention of claim 1 is a tilt lock mechanism for arbitrarily tilting a liquid crystal panel.
Provided on the box body side walls of the box body for accommodating the liquid crystal panel, it supports the frame mounting a plurality of the liquid crystal panel, as an axis around a shaft provided in front of the mounting position of the liquid crystal panel A rotating bracket,
An arcuate sliding piece provided in the bracket and disposed concentrically with the shaft center of the shaft, and formed with a long hole disposed close to the back surface of the front panel of the box;
It said bracket is rotatable, a tilt mechanism for the liquid crystal panel is provided on the shaft to any tilt angle,
A knob that protrudes from the front panel surface, and includes a tilt lock screw that is inserted into the elongated hole to lock the tilt mechanism to fix the bracket and set an inclination angle of the liquid crystal panel; a threaded hole formed in the stopper piece from the front panel through said elongated hole is screwed to the distal end of the tilt lock screws, by the frictional force between the front face panel and the stopper piece, frettage the arcuate sliding piece combined locks the previous SL liquid crystal panel at any angle of inclination, and by loosening the tilt lock screws, are tilt lock mechanism, characterized in that it comprises a locking mechanism capable of releasing the locked state of the tilt mechanism .
[0006]
According to the first aspect of the present invention, brackets are fixed to both sides of the frame on which the liquid crystal panel is mounted, these brackets are fixed to the side walls of the box , and the brackets are rotatable on a shaft attached to the side wall of the box. provided, by the tilt mechanism provided on a shaft which is arranged in front of the mounting position of the liquid crystal panel can be set to the liquid crystal panel at any tilt angle. In addition, a long hole is provided in the arc-shaped sliding piece provided in the bracket, and the tilt lock screw is inserted into the through hole provided in the front panel of the box body and is inserted into the long hole, and the screw hole provided in the stopper piece is inserted into the screw hole provided in the stopper piece. It is a tilt lock mechanism that is screwed to lock the arcuate sliding piece by applying a frictional force between the front panel and the stopper piece, and loosening the tilt lock screw to release the lock. Incidentally, in the present invention, the tilt mechanism may be configured by the frictional force due to the elasticity of the arcuate sliding piece by causing the arcuate sliding piece to slowly contact the front panel. In addition, the liquid crystal panel of Claim 1 is illustrated as a representative of a flat display device, and is interpreted as including another flat display device.
[0007]
Further, the invention of claim 2, regulated along the long hole the tilt angle formed in the arcuate sliding piece of the liquid crystal panel, the inclination angle of the forward direction from the vertical position of the liquid crystal panel 15 The tilt lock mechanism according to claim 1, wherein the tilt lock mechanism has a tilt angle in the backward direction of 10 to 15 degrees.
[0008]
In the invention of claim 2, the arc-shaped sliding piece is formed concentrically with respect to the rotation axis center of the shaft, and the rotation of the liquid crystal panel is tilted in the long hole formed in the arc-shaped sliding piece. A lock screw is inserted to regulate the rotation of the arc-shaped sliding piece, and considering the viewing angle of the liquid crystal panel, it is set to 15 to 20 degrees forward and 10 to 15 degrees backward. This is a tilt lock mechanism having a simple structure in which a tilt mechanism and a lock mechanism are integrated.
[0009]
The invention of claim 3, wherein the frame body the liquid crystal panel is supported mounted on the, the inclination angle is set arbitrarily, and a predetermined tilt lock mechanism according to claim 1 or 2 locked to the tilt angle A liquid crystal panel comprising:
[0010]
In the invention of claim 3, the liquid crystal panel is mounted on the box with a tilt lock mechanism, the liquid crystal panel mounted on the frame is housed in the box, and the operator can arbitrarily rotate the liquid crystal panel back and forth. This is a liquid crystal panel that can set the viewing angle of the liquid crystal panel to the optimum angle as viewed from the operator, and can be locked at an arbitrary inclination angle. Is provided.
[0011]
Further, the invention of claim 4, the mounting ears of the rack mounted on the side walls of the box body of the liquid crystal panel according to claim 3 is provided, and in response to upward or downward field of view of the operator, said shaft the position is a rack-mount liquid crystal panel, characterized in that the liquid crystal panel before Symbol crystal panel from the longitudinal center formed selectively in the lower or upper and rotatable back and forth.
[0012]
In the invention of claim 4, by providing mounting ears for rack mounting on both side walls of the box housing the liquid crystal panel according to claim 3, a rack mounting liquid crystal panel can be obtained. by setting the position of the shaft of the tilt lock mechanism selectively in displaced position downward or upward from the longitudinal center line of the liquid crystal panel, in response to upward or downward field of view as seen from the operator, the optimal liquid crystal panel The liquid crystal panel for rack mounting can maintain the viewing angle.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of a tilt lock mechanism such as a liquid crystal panel according to the present invention, a liquid crystal panel including the mechanism, and a rack mount liquid crystal panel will be described below with reference to the drawings. The present invention relates to a tilt lock mechanism suitable for a liquid crystal panel. The tilt lock mechanism includes a liquid crystal panel mounted on the tilt lock mechanism and a liquid crystal panel suitable for rack mounting. The details thereof will be described below. .
[0014]
In the present invention, a liquid crystal panel is described as a representative flat display device. However, the flat display device includes other flat display devices, and the term of the liquid crystal panel includes only a display portion and a tilt lock mechanism. It is used to mean a liquid crystal device. The tilt lock mechanism includes a tilt mechanism and a lock mechanism.
[0015]
FIG. 1 shows an embodiment of a liquid crystal panel for rack mounting according to the present invention. FIG. 1 (a) is a front view thereof, and FIG. 1 (b) is a side view thereof. In the figure, a rack-mounting liquid crystal panel 11 has a frame 13 on which a liquid crystal panel 12 is mounted mounted on a box 14. The frame 13 is provided with an operation unit 15 that adjusts a power switch, brightness adjustment, image range, and the like corresponding to each liquid crystal panel 12. In FIG. 1, three liquid crystal panels 12 are attached to the frame 13, but the number of the liquid crystal panels 12 is not limited to this embodiment. Further, the frame body 13 is provided with a U-shaped gripping portion 16 that is used when the frame body 13 is manually adjusted to a predetermined inclination angle. In addition, the holding part 16 does not need to be U-shaped, and may be protruding.
[0016]
The frame 13 on which the liquid crystal panel 12 is mounted is mounted in the box body 14 with a tilt lock mechanism (not shown in FIG. 1) interposed so that the liquid crystal panel 12 can be set to an arbitrary inclination angle. Yes. A front panel 14a is provided on both sides of the front surface of the box body 14, and a tilt mechanism is housed in the rear part of the front panel 14a. A tilt lock screw knob 18a of the tilt lock mechanism protrudes from the front panel 14a. In addition, although the knob | pick part 18a is provided in the front panel 14a of both sides in the figure, it is good also considering the knob | pick part 18a as only one side by using only one tilt lock mechanism. Further, the liquid crystal panel 12 provided in the box 14 can be easily mounted on the rack by providing the mounting ears 17 in which the through holes 17 a are formed outside the both side walls of the box 14.
[0017]
As shown in FIG. 2, the tilt lock mechanism of the rack mount liquid crystal panel is provided on the back side of the front panel 14 a and on both inner walls of the box body 14. The bracket 21 of the tilt lock mechanism is fixed to the side wall of the box 14 so as to rotate about the axis of the shaft 22, and both sides of the frame 13 on which the liquid crystal panel 12 is mounted are fixed to the bracket 21. An arc-shaped sliding piece 21c is provided in front of the bracket 21, and a long hole 21b is formed in the arc-shaped sliding piece 21c. The arcuate sliding piece 21b is close to the back surface of the front panel 14a of the box 4 and rotates as the bracket 21 rotates as the bracket 21 rotates. The tip of the tilt lock screw 18 is inserted into a through hole provided in the front panel 14 a, passes through the long hole 21 b, and the screw portion is screwed into the screw hole of the stopper piece 19. The tip of the tilt lock screw 18 forms a latching portion with a double nut 20. In addition, since the tilt lock screw 18 is inserted in the long hole 21b, it can be used to regulate the maximum inclination range of the inclination angle of the liquid crystal panel. The inclination angle Qa is 15 to 20 degrees, and the inclination angle Qb is 10 to 15 degrees.
[0018]
Next, the tilt lock mechanism for the liquid crystal panel of the present embodiment will be described in detail with reference to FIGS. 3 is an exploded perspective view showing details of a tilt lock mechanism for a liquid crystal panel, and FIGS. 4A and 4B are explanatory views for explaining the principle of the tilt lock mechanism.
[0019]
The tilt lock mechanism for the liquid crystal panel of the present embodiment is an integrated tilt mechanism and lock mechanism. As shown in FIG. 3, the bracket 21 includes a side plate portion 21a in which a through hole 21d is formed. The arc-shaped sliding piece 21c bent in a direction perpendicular to the surface of the side plate portion 21a is provided in front of the side plate portion 21a, and an attachment portion 21e for fixing the frame on which the liquid crystal panel is mounted. A projection 27 used for positioning the frame of the liquid crystal panel is formed on the mounting portion 21e. Further, the side plate portion 21a of the bracket 21 is cut so as not to contact the front panel 14a when the liquid crystal panel is tilted back and forth.
[0020]
In the bracket 21, two wave washers 24 and a spacer 25 are inserted into the flanged shaft 22, inserted into the through hole 21 d, and a flange ring 23 is provided at the other end of the flanged shaft 22. . The bracket 21 is provided with three through holes 14c in the side wall portion of the box body 14, and screws 26 are inserted into the through holes 14c and screwed into the screw holes 22a provided in the flanged shaft 22. It is fixed to the side wall of the box 14. The bracket 21 rotates about the axis center of the flanged shaft 22 and can maintain an arbitrary inclination angle by the spring force of the wave washer 24. An arcuate sliding piece 21c is provided in front of the side plate portion 21a of the bracket 21. The arcuate sliding piece 21c is a member concentric with the axial center of the flanged shaft 22, and a long hole 21b is formed in the arcuate sliding piece 21c. The arcuate sliding piece 21c is close to the back surface of the front panel 14a of the box 4 so that the arcuate sliding piece 21c slides on the back surface of the front panel 14a in conjunction with the rotation of the bracket 21. Then, the flanged shaft 22 is rotated about the axis. The flanged shaft 22 has a hollow structure, and its shaft diameter can be increased, and a relatively heavy liquid crystal panel can be rotatably mounted.
[0021]
Further, the tilt lock mechanism is provided with a lock mechanism for fixing at an arbitrary tilt angle. In this locking mechanism, the tip end portion of the tilt lock screw 18 is inserted through a washer 18d, is inserted into a through hole 14b provided in the front panel 14a, is further inserted into a long hole 21b, and the screw portion 18b is inserted into a stopper piece 19. Are screwed into the screw holes 19a. The screw portion 18c at the tip of the tilt lock screw 18 is engaged with the double nut 20 in opposite directions to form a latching portion. The tilt lock screw 18 does not fall off due to the latching portion by the double nut 20.
[0022]
Next, the lock operation of the tilt lock mechanism of the present embodiment will be described with reference to FIG. FIG. 4A is a diagram showing a state where the tilt lock mechanism is locked, and FIG. 4B is a diagram showing a state where the lock is released and the liquid crystal panel can be set to an arbitrary tilt angle. Yes.
[0023]
First, in FIG. 2A, the liquid crystal panel is set to an arbitrary tilt angle, and the knob 18a of the tilt lock screw 18 is rotated. One end of the stopper piece 19 is in contact with the side plate portion 21a, and the screw portion 18b of the tilt lock screw 18 is screwed into the screw hole of the stopper piece 19 so that the stopper piece 19 moves forward without rotating. The stopper piece 19 presses the arcuate sliding piece 21c. The arc-shaped sliding piece 21c comes into contact with the back surface of the front panel 14a, and the frictional force with the front panel 14a increases, and the arc-shaped sliding piece 21c is brought into close contact with the front panel 14a and the stopper piece 19, thereby tilting. The locking mechanism is locked. On the other hand, when the tilt lock screw 18 is loosened, the stopper piece 19 retreats, the frictional force between the arc-shaped sliding piece 21c by the front panel 14a and the stopper piece 19 is relaxed, and the tilt lock mechanism is unlocked. The
[0024]
The liquid crystal panel is mounted on the box so as to be substantially flush with the front panel 14a. When the liquid crystal panel is tilted forward or rearward, the liquid crystal panel rotates around the shaft 22 as an arbitrary axis. The inclination angles Qa and Qb can be set, and an arbitrary inclination angle can be set.
[0025]
In FIG. 4, the stopper piece 19 is in contact with the arcuate sliding piece 21c with an arc surface, but the present invention is not limited to this embodiment. The stopper piece 19 does not have a curved surface as in the embodiment of FIG. 4, and may be any one in which screw holes are formed in a long rectangular flat plate member whose both surfaces are flat. In the stopper piece 19, when the tilt mechanism is locked, the flat surface portion of the stopper piece 19 presses the arc surface of the arcuate sliding piece 21 c and pushes and expands the arc shape of the arcuate sliding piece 21 c. The tilting mechanism can be locked by increasing the frictional force with the panel 14a. The tilt lock screw 8 uses the elasticity of the arcuate sliding piece 21c to lock the tilt mechanism, and can prevent the tilt lock screw 8 from loosening.
[0026]
In the embodiment of the rack mount liquid crystal panel of FIG. 1, the tilt lock mechanism by the bracket of the present embodiment causes the axis center line B of the tilt lock mechanism to be downward with respect to the longitudinal center line C of the liquid crystal panel 12. Is provided. In this embodiment, the operator can easily view the liquid crystal panel 12 installed at the top of the rack from below.
[0027]
On the other hand, when the liquid crystal panel is mounted below the rack, the tilt lock mechanism may be provided on the side of the box so that the axial center line B is above the longitudinal center line C. Referring to the embodiment of FIG. 1, only the left and right tilt lock mechanisms are attached to the side wall of the box, and the liquid crystal panel mounted on the frame is attached, so that the lower tilt angle of the liquid crystal panel is mounted. Can be set larger, so that the viewing angle of the liquid crystal panel installed below the rack can be optimized. That is, the tilt lock mechanism of the present embodiment can cope with the case where the liquid crystal panel is installed at a high position or a low position, and the visibility can be improved.
[0028]
In the embodiment of FIG. 1, the tilt angle Qa of the liquid crystal panel from the vertical position of the liquid crystal panel to the forward direction can be set to 15 to 20 degrees, and the vertical position of the liquid crystal panel is moved backward. The tilt angle Qb can be set to 10 to 15 degrees. The inclination angle can be easily regulated by adjusting the length of the long hole formed in the arcuate sliding piece in the longitudinal direction. Of course, the maximum inclination angle of the liquid crystal panel is such that when the projection is formed inside the box 14 and the bracket 21 is inclined in the vertical direction, the upper and lower sides of the side plate portion 21a of the bracket 21 abut on this projection. In this way, the maximum inclination angle may be regulated.
[0029]
In the above embodiment, the arc-shaped sliding piece may be formed by stamping with the bracket, or the arc-shaped sliding piece may be welded to the bracket and integrated. In the latter case, the arc-shaped sliding piece may be welded or screwed to the bracket using a material having higher flexibility and strong spring force.
[0030]
【The invention's effect】
As described above, according to the present invention, there is an advantage that the tilt lock mechanism that supports the liquid crystal panel and has both the tilt mechanism and the lock mechanism can be configured with a simple mechanism, and the shaft diameter of the tilt mechanism shaft is increased. Therefore, there is an advantage that it can be applied to a large liquid crystal panel having a relatively heavy weight. Furthermore, the tilt lock mechanism of this structure has the advantage that the front and rear tilt angles of the liquid crystal panel can be set relatively large, and has the advantage that it can be easily adjusted to the optimum viewing angle of the liquid crystal panel. In addition, this lock mechanism has an advantage of a strong restraining force at the time of locking, and an advantage of being strong against vibration is suitable for mounting on a vehicle.
[0031]
Further, according to the present invention, even if the liquid crystal panel is mounted at a high position in the rack, the upper part of the liquid crystal panel is rotated forward by setting the rotation axis of the tilt lock mechanism to be lower than the longitudinal center of the liquid crystal panel. Thus, there is an advantage that the liquid crystal panel can be easily set to an optimum viewing angle. The same applies to the case where the liquid crystal panel is mounted at a low position in the rack.
[0032]
In addition, according to the present invention, the liquid crystal panel is accommodated by a tilt lock mechanism fixed in the box, and there is an advantage that it can be applied to liquid crystal panels for other uses than for rack mounting. .
[Brief description of the drawings]
FIG. 1 shows an embodiment of a liquid crystal panel for rack mounting according to the present invention, wherein FIG. 1 (a) is a front view thereof and FIG. 1 (b) is a side view thereof.
FIG. 2 is a partially cutaway perspective view showing an outline of a tilt lock mechanism provided in the liquid crystal panel of the present embodiment.
FIG. 3 is an exploded perspective view showing details of a tilt lock mechanism for a liquid crystal panel of the present embodiment.
4A and 4B are explanatory diagrams for explaining an operation mechanism of a tilt lock mechanism. FIG.
FIG. 5 is a partially cutaway perspective view of a conventional liquid crystal device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 Liquid crystal panel 12 for rack mountings Liquid crystal panel 13 Frame 14 Box 14a Front panel 15 Operation part 16 Holding part 17 Mounting part 18 Tilt lock screw 18a Knob part 19 Stopper piece 20 Double nut 21 Bracket 21a Side plate part 21b Long hole 21c Arc-shaped sliding piece 21d Through hole 21e Mounting portion 22 Shaft 23 Shaft 23 Ring 24 Wave washer 25 Spacer

Claims (4)

In the tilt lock mechanism that tilts the liquid crystal panel arbitrarily,
Provided on the box body side walls of the box body for accommodating the liquid crystal panel, it supports the frame mounting a plurality of the liquid crystal panel, as an axis around a shaft provided in front of the mounting position of the liquid crystal panel A rotating bracket,
An arcuate sliding piece provided in the bracket and disposed concentrically with the shaft center of the shaft, and formed with a long hole disposed close to the back surface of the front panel of the box;
It said bracket is rotatable, a tilt mechanism for the liquid crystal panel is provided on the shaft to any tilt angle,
A knob that protrudes from the front panel surface, and includes a tilt lock screw that is inserted into the elongated hole to lock the tilt mechanism to fix the bracket and set an inclination angle of the liquid crystal panel; a threaded hole formed in the stopper piece from the front panel through said elongated hole is screwed to the distal end of the tilt lock screws, by the frictional force between the front face panel and the stopper piece, frettage the arcuate sliding piece combined locks the previous SL liquid crystal panel at any angle of inclination, and by loosening the tilt lock screws, tilt lock mechanism, characterized in that it comprises a locking mechanism capable of releasing the locked state of the tilt mechanism. Wherein the tilt angle of the liquid crystal panel regulated along the elongated hole formed in the arcuate sliding piece, and 15 to 20 ° tilt angle in the forward direction from the vertical position of the liquid crystal panel, and the rear direction The tilt lock mechanism according to claim 1, wherein the tilt angle is set to 10 to 15 degrees. 3. A liquid crystal panel comprising the tilt lock mechanism according to claim 1, wherein the liquid crystal panel mounted on the frame is supported, the tilt angle is arbitrarily set, and the tilt lock mechanism is locked to a predetermined tilt angle. . The mounting ears of the rack mounted on the side walls of the box body of the liquid crystal panel according to claim 3 is provided, and in response to upward or downward field of view of the operator, the position of the shaft, longitudinal of the liquid crystal panel rack-mounted liquid crystal panel, characterized in that the rotatable back and forth before Symbol liquid crystal panel is provided selectively from the direction center downward or upward.

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