JP4572021B2 - Tilt stand - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a tilt stand that can adjust the tilt angle of a flat panel display device such as a liquid crystal display monitor.
[0002]
[Prior art]
Various types of angle adjusting mechanisms are known for adjusting and supporting a flat panel type display device such as a liquid crystal display monitor with a predetermined inclination angle so that it can be easily seen by the user. A conventional example is a mechanism in which a display device having a display screen is pivotally supported on a support base serving as a base. In order to stabilize the tilt angle of the display screen, the frictional force between members at the shaft portion is adjusted. Or a display device is elastically biased in the direction opposite to the tilt direction using an elastic member such as a spring.
[0003]
For example, in a screen display device described in JP-A-8-214239, a leaf spring for returning the screen display device in a vertical direction, a shaft serving as a drive shaft for tilting the screen display device, and driving of the shaft are fixed. A mechanism constituted by a shaft holder and a lock screw is disclosed.
[0004]
In Japanese Patent Laid-Open No. 9-138655, a claw portion and a guide portion are provided on a lock plate that supports a display device pivotally supported by a base from behind, and a plurality of convex portions are provided on the base so that the claw portion can be hooked. A mechanism is disclosed in which the inclination angle of the display device can be changed by engaging the claw portion with any convex portion on the base.
[0005]
Japanese Patent Application Laid-Open No. 5-119867 discloses a liquid crystal display including a main body having a keyboard, a liquid crystal display section, and a vertical rotation section for moving the liquid crystal display section attached to the end of the main body up and down. Type personal computers are disclosed.
[0006]
[Problems to be solved by the invention]
However, the conventional angle adjustment mechanism as described above has a problem that it is difficult to fold the display device in a compact manner. For example, in the angle adjustment mechanism described in JP-A-9-138655, the lock plate located behind the display device is in the way, so it is difficult to rotate the display device backward over a certain angle with respect to the base. For this reason, the display device cannot be folded compactly. Further, the screen display device described in the above-mentioned Japanese Patent Application Laid-Open No. 8-214239 does not assume a relatively thin display device like a liquid crystal display monitor, and is rearward by a leaf spring for returning the display device to a vertical direction. Because there is a limit to the rotation, it cannot be folded compactly.
[0007]
Further, as described in Japanese Patent Laid-Open No. 5-11867, the rear tilt angle of the display screen is within a range of 0 to 90 ° only by the frictional force of the shaft portion that pivotally supports the display device (liquid crystal display portion). Although there is an angle adjustment mechanism that can be adjusted, the display device described in the above publication is relatively small in size and its own weight is small. However, in recent years, thin display devices such as liquid crystal display monitors have been increasing in size and their weight is large. Therefore, when the tilt angle of the display device is large, there arises a problem that the display device falls down against the frictional force of the shaft portion due to its own weight or the tilt angle varies. Although it is possible to prevent the display device from overturning by increasing the frictional force, the operational force in the normal inclination angle range near 0 to 45 ° becomes heavier and the operability deteriorates. was there.
[0008]
In view of the above problems, the present invention intends to solve the problem that even if the frictional force of the shaft portion that pivotally supports the display device is set within a favorable range of operability, the display device falls over or tilts due to its own weight. An object of the present invention is to provide a tilt stand that prevents the angle from fluctuating and can be folded more compactly.
[0009]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, a tilt stand according to claim 1 of the present invention is a tilt stand that supports a flat panel display device at a predetermined inclination angle with respect to an installation surface, and is disposed opposite to the installation surface. A base member that is fixed to the back surface of the display device, and a coupling member that is pivotally supported about a first axis in a direction in which an inclination angle of the display device changes with respect to the base member. A stopper having a side edge portion and a bottom portion formed in an inverted L shape or L shape and pivotally supported around the second axis with respect to the base member,
The stopper maintains the standing posture that is brought into contact with the base member and the side edge portion in a state of being rotated in one direction to the second axis protrudes to the connecting member, in an upright posture of the stopper , the inclination of the display device by the end of the connecting member may abut a side edge of the stopper when the display device by causing the rear rotating the connecting member to the first axis is inclined to the rear The angle is regulated.
[0010]
The invention according to claim 2 is the tilt stand according to claim 1, wherein the stopper rotates in the direction opposite to the one direction around the second axis. In this state, the side edge portion is maintained in a rollover posture in which the side edge portion is separated from the end portion of the connecting member and is retracted to the installation surface side, and the connecting member is rotated rearward so that the display device is substantially parallel to the base member. It can be folded by inclining until it comes into contact with the side edge of the rollover posture .
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a tilt stand according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic perspective view showing a state in which a flat panel display device 2 is mounted on a tilt stand 1 according to the present embodiment. The display device 2 is a relatively thin flat panel display device having a display screen (not shown) such as a liquid crystal screen on the front surface. 2 is a perspective view of the tilt stand 1 as viewed from behind, FIG. 3 is a front view of the tilt stand 1, and FIG. 4 is a right side view thereof.
[0012]
As shown in FIG. 1, the tilt stand 1 according to the present embodiment is used by fixing the connecting member 11 to the back surface 2 b of the display device 2 and fixing the base member 10 of the lower structure of the tilt stand 1 to the leg portion 3. Is done.
[0013]
The tilt stand 1 includes a plate-like U-shaped base member 10 fixed to a leg portion 3 and a plate-like connecting member 11 pivotally supported forward or backward with respect to the base member 10. And stoppers 12 and 13 pivotally supported forward or backward with respect to the base member 10.
[0014]
The base member 10 is formed of a steel plate such as an electrogalvanized steel plate (SECC; JIS G 3313), and is disposed facing the installation surface 4 while being fixed to the leg portion 3 in use. As shown in FIGS. 1 and 3, by cutting and raising a part of the base member 10, cut and raised portions 20 and 21 for supporting the stoppers 12 and 13 are provided upright. Further, as shown in FIG. 1, openings 22 and 23 are formed in the trace of a part of the base member 10 cut and raised.
[0015]
As shown in the front view of FIG. 3, one bracket member 15 is formed by bending a steel plate into an inverted L shape, and its bottom portion 15a is fixed to the surface of the base member 10 using screws or the like, and its side wall The part 15 b is erected with respect to the surface of the base member 10. The other bracket member 16 is formed by bending a steel plate into an L shape so as to be symmetrical with the bracket member 15, and its bottom 16 a is fixed to the surface of the base member 10, and its side wall The portion 16b is erected with respect to the surface of the base member 10. The bracket members 15 and 16 are formed of a steel plate such as a cold rolled steel plate (SPCC; JIS G 3141).
[0016]
The connecting member 11 is made of a steel plate such as a cold rolled steel plate, and is pivotally supported by the bracket members 15 and 16, and rotates around the axis A1 in a state where a frictional force is applied. The connecting member 11 has a function of receiving the weight of the display device 2 and transmitting it to the base member 10 of the lower structure of the tilt stand 1 as shown in FIG.
[0017]
A perspective view of such a connecting member 11 will be described with reference to FIG. The connecting member 11 is formed by bending a main body part 11a for fixing the back surface 2b of the display device 2 to the surface, and an angle of about 90 ° with respect to the surface of the main body part 11a at both side ends below the main body part 11a. And bent portions 17 and 18. Cutouts 11b and 11c are formed at both end portions of the body portion 11a continuous with the bent portions 17 and 18, respectively. These notches 11b and 11c are so-called reliefs for increasing the bending accuracy of the bent portions 17 and 18 with respect to the main body portion 11a. The bent portions 17 and 18 are formed with through-holes 17a and 18a for cutting through the mounting members.
[0018]
FIG. 6 is an enlarged view of a main part viewed from the front side, showing a mechanism for pivotally supporting the bent portion 17 of the connecting member 11 to the bracket member 15. As shown in the drawing, the shaft 61 is coaxially arranged on the inner surface of the bent portion 17 of the connecting member 11, and the shaft portion 60 b of the screw 60 is inserted into the through hole 17 a of the bent portion 17 and screwed to the shaft 61. The shaft 61 is fixed to the bent portion 17. Further, the shaft portion 61a at the tip of the shaft 61 is inserted into the through hole of the side wall portion 15b of the bracket member 15 through the washer 67, and the washers 62 and 63, the spring washers 64 and 65, and the washer 66 are sequentially inserted into the shaft portion 61a. After the outer fitting, the washer 66 is pressed in the direction of the bent portion 17 by caulking the shaft portion 61 a of the shaft 61. As a result, a frictional force is applied between the bent portion 17 and the side wall portion 15 b of the bracket member 15. The mechanism for pivotally supporting the other bent portion 18 of the connecting member 11 to the bracket member 16 is the same as the mechanism for pivotally supporting the bent portion 17 described above except that it is bilaterally symmetric when viewed from the front side. Therefore, detailed description thereof is omitted.
[0019]
Thus, in a state where the frictional force is applied between the bent portions 17 and 18 and the bracket members 15 and 16, the connecting member 11 is pivotally supported with respect to the base member 10 so as to be rotatable around the axis A1. .
[0020]
Next, a schematic perspective view showing the stoppers 12 and 13 will be described in detail with reference to FIG.
The stopper 12 shown in FIG. 7A is a member that is pivotally supported by the cut-and-raised portion 20 shown in FIG. 3, and the stopper 13 shown in FIG. 7B is a member that is pivotally supported by the other cut-and-raised portion 21. It is. In the present embodiment, the stoppers 12 and 13 are made of a steel plate such as a cold rolled steel plate. The stopper 12 shown in FIG. 7A has an inverted L shape with a side wall portion 12a and a bottom portion 12b, and a through hole 12c through which the mounting member is inserted is formed in the side wall portion 12a. The stopper 13 in FIG. (B) has an L shape with a side wall portion 13a and a bottom portion 13b, and a through hole 13c for inserting an attachment member is formed in the side wall portion 13a. Further, the upper side edges of the side walls 12a and 13a have a triangular shape, and the inclination angle of the display device 2 can be adjusted by the end of the connecting member 11 coming into contact with the slope of the side edges as will be described in detail later. regulate. Further, steps are provided at the side edges of the bottom portions 12b and 13b of the stoppers 12 and 13, and contact portions 12d and 13d described later are formed by these steps.
[0021]
FIG. 8 is an enlarged view of a main part viewed from the front side, showing an example of a mechanism for pivotally supporting the stopper 12 to the raised part 20. As shown in the figure, the shaft 47 is coaxially arranged on the outer surface of the cut and raised portion 20, the shaft portion 46 b of the screw 46 is inserted into the through hole of the cut and raised portion 20 and screwed into the shaft 47, and the cut and raised portion 20. The shaft 47 is fixed to the shaft. Further, the shaft 47a at the tip of the shaft 47 is inserted into the through hole of the side wall 12a of the stopper 12 through the washer 40, and the washers 41, 42, the spring washers 43, 44 and the washer 45 are sequentially removed from the shaft 47a. The washer 45 is cut and raised by pressing the shaft portion 47 a of the shaft 47 and pressed in the direction of the portion 20. Accordingly, an appropriate frictional force is applied between the stopper 12 and the cut and raised portion 20.
Such a frictional force makes it possible to rotate the stopper 12 with respect to the base member 10 with good operability. As the spring washers 43 and 44, for example, a corrugated washer having twisted teeth on an annular thin plate may be used. The present invention is not limited to such a shaft support mechanism, and it is not necessary to apply a frictional force between the stopper 12 and the cut and raised 20 without using a spring washer or a washer. Further, the mechanism for pivotally supporting the stopper 13 on the other cut-and-raised portion 21 is the same as the mechanism for pivotally supporting the stopper 12 except that it is bilaterally symmetric when viewed from the front side. Is omitted.
[0022]
FIG. 9 is an enlarged view of a main part of the stopper 12 as viewed from the right side. FIG. 9 shows a cross section of the base member 10 so that the opening 22 provided in the base member 10 appears. In the example shown in FIGS. 1 to 4 and 9, the angle formed by the connecting member 11 and the base member 10 is 90 °.
[0023]
When the tilt stand 1 is used, that is, when the user is using the display device 2 fixed to the tilt stand 1, the user rotates the stopper 12 clockwise around the axis A2 at the opening 22 as shown in FIG. The side edge is brought into contact with the inner wall of the opening 22 to take a standing posture. In this state, the standing postures of the stoppers 12 and 13 are fixed by the bottom surfaces of the bottom portions 12 b and 13 b being supported by the installation surface 4.
[0024]
When the display device 2 is rotated rearward around the axis A1, as shown in FIG. 10, the end portions 11d and 11e of the connecting member 11 take the standing posture, and the side wall portion 12a and the stopper 13 of the stopper 12, respectively. The display device 2 cannot be tilted to an angle less than the angle θmin formed by the connecting member 11 and the base member 10 in order to come into contact with the upper side edge of the side wall portion 13a, thereby restricting the tilt angle of the display device 2. can do. As shown in FIG. 7, the upper side edges of the side wall parts 12a and 13a are triangular, so that the upper side edges are easy to support by supporting the ends 11d and 11e of the connecting member 11, and the opening 22 There is an advantage that it is easy to turn without being caught. FIG. 11 is a perspective view of the display device 2, the tilt stand 1, and the legs 3 tilted as shown in FIG. 10 as viewed from the rear and slightly below. With such a configuration, even if the frictional force between the bent portions 17 and 18 of the connecting member 11 and the bracket members 15 and 16 is set to be easy for the user to operate, the inclination angle of the display device 2 is maintained. Since the center of gravity of the display device 2 is not significantly moved backward because it is regulated within the predetermined range, the display device 2 is prevented from falling backward against its frictional force due to its own weight.
[0025]
On the other hand, when the tilt stand 1 is not used, that is, when the user stores or packs the display device 2, the user lifts the leg 3, that is, the base member 10 from the installation surface 4 as shown in FIG. 9. The stoppers 12 and 13 are rotated in the opposite directions at the openings 22 and 23, and the bottoms 12 b and 13 b of the stoppers 12 and 13 are brought into contact with the inner wall of the opening 22 as shown by the one-dot chain line in FIG. Let the roll over posture. As a result, the end portions 11d and 11e of the connecting member 11 do not come into contact with the side wall portions 12a and 13a of the stoppers 12 and 13, so that the restriction on the inclination angle of the display device 2 is released. Therefore, as shown in FIG. 12, the display device 2 can be rotated around the axis A1 and tilted to a position substantially parallel to the base member 10, so that the display device 2 can be folded compactly and stored. It becomes possible to easily minimize the volume of the product during packaging and transportation.
[0026]
In this embodiment, the stoppers 12 and 13 are rotated counterclockwise so that the restriction of the tilt angle of the display device 2 is released. Instead, the stoppers 12 and 13 are rotated clockwise. It is also possible to adopt a structure in which the restriction of the tilt angle of the display device 2 is released.
[0027]
FIG. 13 is a perspective view of the display device 2, the tilt stand 1, and the legs 3 tilted as shown in FIG. 12 as viewed from the rear. The base member 10 is fixed to the leg 3 using screws 80, 81, 82, 83, 84, 85. The contact portions 12 d and 13 d of the stoppers 12 and 13 protruding from the openings 22 and 23 of the base member 10 are in contact with and locked to the bottom surface of the base member 10. Thereby, the rollover posture of the stoppers 12 and 13 when the display device 2 is folded can be stabilized. Instead of providing the abutting portions 12d and 13d on the stoppers 12 and 13 as described above, a protrusion is provided on the openings 22 and 23 of the base member 10, and the bottom portions 12b and 12b of the stoppers 12 and 13 are folded when the display device 2 is folded. A structure may be employed in which 13b abuts and locks against the protrusion.
[0028]
【The invention's effect】
As described above, according to the tilt stand according to the first aspect of the present invention, since the tilt angle of the display device is regulated by the stopper in the standing posture, the user uses the frictional force in the shaft portion that pivotally supports the connecting member. Even if it is set to be easy to do, the center of gravity of the display device does not move significantly backward, and the display device can be prevented from falling down due to its own weight.
[0029]
According to the second aspect of the present invention, since the restriction of the tilt angle of the display device is released by rotating the stopper from the standing posture to the rollover posture, the display device is tilted until it is substantially parallel to the base member. It can be folded compactly, and its volume can be easily minimized during storage and packing transportation.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view showing a state in which a display device is mounted on a tilt stand according to an embodiment of the present invention.
FIG. 2 is a perspective view of the tilt stand according to the embodiment as viewed from the rear.
FIG. 3 is a front view of the tilt stand according to the embodiment.
FIG. 4 is a right side view of the tilt stand according to the embodiment.
FIG. 5 is a perspective view of a connecting member.
FIG. 6 is an enlarged view of a main part showing a mechanism in which a connecting member is pivotally supported by a bracket member.
FIG. 7 is a perspective view of a stopper.
FIG. 8 is a main part enlarged view showing a mechanism in which a stopper is pivotally supported by a base member.
FIG. 9 is an explanatory view showing the posture of the stopper with respect to the base member.
FIG. 10 is a side view of a tilt stand showing a connecting member inclined to a maximum angle θmin.
FIG. 11 is a perspective view of the display device, the tilt stand, and the legs as viewed from the rear and slightly below.
FIG. 12 is a side view of the tilt stand showing the base member tilted to be substantially parallel to the base member.
FIG. 13 is a perspective view of the display device, the tilt stand, and the leg portion in a folded state as viewed from the rear.
[Explanation of symbols]
1 tilt stand, 10 base member, 11 connecting member, 15, 16 bracket member, 12, 13 stopper.

Claims (2)

A tilt stand that supports a flat panel display device at a predetermined tilt angle with respect to an installation surface, and a base member that is disposed opposite to the installation surface, and is fixed to the back surface of the display device and is attached to the base member On the other hand, a connecting member that is pivotally supported around a first axis in a direction in which the inclination angle of the display device changes, and a side edge portion and a bottom portion formed in an inverted L shape or L shape. And a stopper pivotally supported about the second axis with respect to the base member,
The stopper maintains the standing posture that is brought into contact with the base member and the side edge portion in a state of being rotated in one direction to the second axis protrudes to the connecting member, in an upright posture of the stopper , the inclination of the display device by the end of the connecting member may abut a side edge of the stopper when the display device by causing the rear rotating the connecting member to the first axis is inclined to the rear A tilt stand that regulates the angle. 2. The tilt stand according to claim 1, wherein the stopper is rotated in the direction opposite to the one direction around the second axis and the side edge portion is separated from the end portion of the connecting member. Folded by keeping the rollover position retracted and tilting the display device until it is substantially parallel to the base member by rotating the connecting member backward and bringing it into contact with the side edge of the rollover position. A tilt stand that makes it possible.

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