JPH0545765U - Angle adjustment mechanism for display device - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] The angle of the screen of the display device can be adjusted to any angle. [Structure] The rotating force of rotating a rotary knob 13 or the rotating force of a DC motor is transmitted to a worm wheel 10 meshing with the worm gear via a worm gear 12, and a display device 1 to which the worm wheel is attached slides along a tilt table 6. Move. Due to the characteristics of the worm wheel and worm gear, the rotational force transmitted to the worm wheel is small, and the display screen of the display device can be adjusted to any angle in the vertical direction and set to an angle that is easy to see. it can. Further, the swivel mechanism is provided in which the tilting base for holding the display device is rotated by transmitting the rotational force of the rotary knob to the helical bevel gear via the bevel gear.
Therefore, the angle of the display screen of the display device is adjusted to an arbitrary angle in the up-down direction and the left-right direction, and is set to a two-dimensionally easy-to-see angle.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an angle adjusting mechanism for a display device such as an LCD or a CRT used in an information processing device such as a personal computer or a word processor.

[0002]

[Prior Art]

 The LCD or CRT display device in an information processing device such as a personal computer or a word processor is designed to prevent the light from the ceiling light or the external light coming from the window from reflecting on the display screen and making it difficult to see. The display angle is adjustable.

As such an angle adjusting mechanism of the display device, a tilt mechanism and a swivel mechanism capable of adjusting the display angle of the display device in the up and down directions by using frictional force due to surface contact are adopted. Has been done. For example, by pressing the display device 1 such as the LCD or CRT such as the information processing device shown in FIG. 5 against the base 2 in the arrow X direction or the Y direction via the tilt mechanism 3 shown in FIG. The display angle is adjustable.

That is, as shown in FIG. 6, a curved portion having a predetermined radius of curvature is formed on the bottom surface of the display device 1, and the display device 1, its controller, and the power supply portion have a bottom surface and a back surface. It is covered with a back cover 4 formed of a curved surface concentric with the curved portion of the bottom surface of the display device 1. A boss 5 is integrally formed on the bottom of the back cover 4. On the other hand, the base 2 has a curved surface that is concentric with the curved portion of the display device 1 and the back cover 4, and the tilt base 6 that slides in opposition to the curved portion of the back cover 4 is placed and fixed. The tilt table 6 is formed with a groove 6a for moving the boss 5. Further, the tilt piece 7 having a curved surface concentric with the curved portion of the display device 1, the back cover 4 or the tilt base 6 is fastened to the boss 5 with the screw 8 with a tightening torque enough to hold the display screen of the display device 1 at an arbitrary angle. By tightening, the back cover 4 and the tilt base 6 are connected and held, and the back cover 4 and the tilt piece 7 are slidable on the upper surface and the lower surface of the tilt base 6, respectively.

In the tilt mechanism 3 configured as described above, contact frictional forces are generated between the curved portion of the back cover 4 and the tilt base 6 and between the tilt base 6 and the tilt piece 7, respectively, and the display device 1 When a force is applied to the back cover 4 in the X direction or the Y direction, the boss 5 formed integrally with the back cover 4 moves in the Z direction along the groove 6a formed in the tilt table 6 to display the display device. 1 is adjusted and held at an arbitrary angle with respect to the base 2 by the contact friction force.

[0006]

[Problems to be solved by the device]

 However, in the tilt mechanism 3 described above, when the display device 1 is adjusted to an easy-to-see angle, the base 2 is lighter than the display device 1, and therefore the base 2 is pressed in the X direction or the Y direction while being pressed by hand. There was a problem that it was difficult to operate because both hands had to be applied, and both hands were required.

Further, the force applied to the display device 1 for adjusting the angle depends on the height h of the boss 5, and when h is small, the frictional force becomes large and the movement of the display device 1 is hard to adjust. Conversely, if h is large, the frictional force will be small and the display angle will change due to the weight of the display device 1, which may prevent the display device 1 from being adjusted or held at an arbitrary angle. was there.

The present invention has been made in view of the above circumstances, and an object thereof is to provide an angle adjusting mechanism of a display device capable of adjusting an angle of a display screen of the display device to an arbitrary angle.

[0009]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides an angle adjusting mechanism of a display device, which adjusts the angle of the display surface of a display device whose bottom surface is formed of a curved surface having a predetermined curvature. A tilt base formed to slidably hold the display device, a worm wheel integrally attached to the bottom surface of the display device and having a pitch circle concentric with the curved surface, and the same module as the worm wheel. A worm gear that meshes with the worm gear, and a tilt drive unit that is connected to the shaft of the worm gear and that transmits a driving force to the worm wheel via the worm gear and slides the display device along the tilt table. And

Further, the present invention is characterized in that the tilt driving unit is a DC motor.

Further, the present invention is characterized in that the tilt driving unit is a rotary knob.

Further, the present invention provides an angle adjusting mechanism of a display device, wherein a bottom surface is formed of a curved surface having a predetermined curvature, and an angle of a display surface of the display device is adjusted. And a tilt base having a flange-shaped circumference on the bottom, a base rotatably supporting the circumference of the tilt base, and an integral body on the bottom surface of the display. Worm wheel that is attached to the curved surface and has a pitch circle that is concentric with the curved surface, a worm gear that meshes with the worm wheel in the same module, and a worm wheel that is connected to the shaft of the worm gear and that drives the worm wheel through the worm gear. A tilt drive unit that transmits a force to slide the display device along the tilt base, and a spiral bevel gear integrally molded on a circumferential portion of the tilt base, A bevel gear that meshes with this spiral bevel gear in the same module and a bevel gear that is connected to the shaft of this bevel gear and transmits the rotational force to the above bevel bevel gear through this bevel gear to hold the above display device on the above base. And a swivel drive unit for rotating the tilt base.

Further, the present invention is characterized in that the swivel driving unit is a rotary knob.

[0014]

[Action]

 Since the present invention is configured as described above, the rotational force of the tilt drive unit is transmitted to the worm wheel via the worm gear and the display device slides along the tilt base, so that the angle of the display screen of the display device is changed. It is vertically adjusted to an arbitrary angle and set to an angle that is easy to see.

Further, according to the present invention, since the tilt driving unit is constituted by the DC motor, it is easy to set the angle of the display screen of the display device.

Also, in the present invention, since the tilt driving unit is composed of the rotary knob, the tilt mechanism can be achieved with a simple mechanism.

Further, according to the present invention, the rotation force of the tilt drive unit is transmitted to the worm wheel via the worm gear and the display device slides along the tilt base, and the rotation force of the swivel drive unit drives the bevel gear. Since the tilt table that is transmitted to the bevel gear and holds the display device is equipped with a swivel mechanism that rotates on the base, the angle of the display screen of the display device can be adjusted vertically and horizontally. The angle is adjusted and the angle is set to be easy to see in two dimensions.

Further, in the present invention, since the swivel driving unit is composed of the rotary knob, the swivel mechanism can be achieved with a simple mechanism.

[0019]

【Example】

 Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a sectional view showing the outline of a first embodiment of the present invention. The same parts as those in FIGS. 5 and 6 are designated by the same reference numerals and detailed description thereof will be omitted.

In FIG. 1, 10 is a worm wheel integrally attached to the sliding surface of the back cover 4 of the display device 1 by molding or the like. The pitch circle 10 a of the worm wheel 10 is a curved surface of the tilt base 6. That is, it is formed concentrically with the curved surface at the bottom of the display device 1. Further, the worm wheel 10 meshes with the worm gear 12 supported by a worm gear shaft 11 held by the base 2 in parallel with the upper and lower surfaces of the base 2 in the same module. That is, the worm wheel 10 and the worm gear 12 are arranged at the position where the tangent line parallel to the upper and lower surfaces of the base 2 of the pitch circle 10a of the worm wheel 10 and the pitch circle 12a of the worm gear 12 match.

A rotating knob 13 is attached and fixed to the tip of the worm gear shaft 11 exposed from the base 2 on the front side of the display device 1. By rotating the rotating knob 13, the worm gear shaft 11 is fixed. It is configured to rotate. The rotational force for rotating the rotary knob 13 is transmitted to the worm wheel 10 via the worm gear shaft 11 and the worm gear 12, and the display device 1 slides on the tilt table 6 in the arrow Z direction.

Although not shown in FIG. 1, a tilt mechanism 3 similar to that shown in FIG. 3 is provided behind the worm wheel 10, and the tilt piece 7 can be fastened to the boss 5 with a screw 8. The back cover 4 and tilt base 6 are connected and held by. However, the tightening torque is not strong enough to hold the display screen of the display device 1 at an arbitrary angle, and is a holding force enough to hold the display device 1 on the tilt table 6 without rattling. The tilt table 6 acts as a guide when the display device 1 slides.

As described above, the tilt mechanism 14 according to the first embodiment of the present invention is similar to the tilt mechanism 3 shown in FIG. 6 except that the worm wheel 10, the worm gear shaft 11, the worm gear 12, and the rotary knob 13 as a drive source are used. It is configured by adding a driving mechanism 15 consisting of.

Next, the operation of the first embodiment of the present invention having the above structure will be described.

When the operator manually rotates the rotary knob 13 as a drive source, the worm gear shaft 11 rotates, and the worm gear 12 supported by the worm gear shaft 11 rotates as the gear shaft 11 rotates. .. When the worm gear 12 rotates, the worm wheel 10 meshing with the worm gear 12 converts the rotational movement of the worm gear 12 into a linear movement and slides in the arrow Z direction. Therefore, the rotational force of the rotary knob 13 is transmitted to the worm wheel 10 via the worm gear shaft 11 and the worm gear 12, and the display device 1 slides on the tilt base 6 in the arrow Z direction.

By the way, the force transmitted to the worm wheel 10 is determined by the ratio of the pitch cycles 10a, 12a of the worm wheel 10 and the worm gear 12, but generally, the rotational force for rotating the rotary knob 13 is transmitted to the worm wheel 10. The display device 1 can be slid on the tilt base 6 by turning the rotary knob 13 with a small force, and with one hand. It is possible to adjust the angle of the display screen of the display device 1.

On the other hand, in order to transmit the force from the worm wheel 10 to the worm gear 12, due to the characteristics of the worm wheel 10 and the worm gear 12, contrary to the case where the rotational force of the rotary knob 13 is transmitted to the worm wheel 10, the number is opposite. Since ten times the force is required, the display device 1 does not slide on the tilt base 6 by its own weight even if the frictional force of the tilt mechanism 3 is weak.

Although the rotary knob 13 is provided on the front surface side of the display device 1 in the above embodiment, the present invention is not limited to this, and the B portion of the worm gear shaft 11 may be connected to the worm gear shaft 11 via, for example, a bevel gear. The rotary knob 13 may be bent at a right angle, and the rotation knob 13 may be provided on the side surface side of the display device 1, that is, on the side surface side of the information processing device.

Next, a second embodiment of the present invention will be described with reference to the drawings.

FIG. 2 is an external view of an information processing apparatus having an angle adjusting mechanism of a display device according to a second embodiment of the present invention, and FIG. 3 is a view showing a main part of the second embodiment of the present invention. 4 is a sectional view taken along line C-C in FIG. 4 and FIG. 4 is a bottom view from the direction D in FIG. 3 showing an essential part of the second embodiment. The same parts as those in FIGS. 1, 5 and 6 are designated by the same reference numerals, and detailed description thereof will be omitted.

As shown in FIG. 2, the information processing apparatus includes a tilt mechanism for vertically adjusting the display angle of the display device 1 and a swivel mechanism for horizontally adjusting the display angle. That is, as will be described later, by pressing the switch 20 or the switch 21 which is provided near the front side corner of the base 2 and operates the tilt mechanism, the display angle of the display device 1 is changed in the X direction or the Y direction. The tilt table 23 holding the display device 1 is rotated by a rotary knob 22 that is angularly adjusted in the direction and is arranged in the center of the front surface side of the base 2 to operate the swivel mechanism. The display angle of the display device 1 is adjusted in the W direction by rotating on the base 2 supporting the.

As shown in FIGS. 3 and 4, the tilt mechanism 25, like the tilt mechanism 14 shown in FIG. 1, is a worm wheel integrally formed on the sliding surface of the bottom surface of the back cover 4 of the display device 1. 10, a worm gear 12, which is supported by the worm gear shaft 11 and meshes with the worm wheel 10, a bevel gear 26 attached to the worm gear shaft 11, the bevel gear 27, and a drive source attached to the shaft of the bevel gear 27. A drive mechanism 29 including a drive DC motor 28 is provided, and further, a tilt mechanism 3 similar to that shown in FIG. 6 is provided. However, the shape of the tilt base 30 differs from the tilt base 6 in the tilt mechanism 3 shown in FIG. The shapes are different. That is, the tilt base 30 is enlarged to hold almost the entire sliding surface of the display device 1, and at the bottom of the peripheral wall 30a of the tilt base 30, the home gear shaft 11 is mounted via a bearing (not shown). It is rotatably supported. Further, in the vicinity of the upper part of the support portion of the worm gear shaft 11, a flange-shaped circumferential portion 30b is formed integrally with the circumferential wall 30a by molding, and the circumferential portion 31 is rotatably supported on the base 2. Has been done. Further, the DC motor 28 is electrically connected to the switches 20 and 21 via the signal line 31, and when either one of the switches 20 and 21 is pressed, the corresponding switch is pressed. The rotation direction is determined, and the tilt mechanism 25 is driven to rotate the display angle of the display device 1 in the X direction or the Y direction.

Further, a spiral bevel gear 32 is integrally formed on a part of the front surface side of the circumferential portion 30b of the tilt base 30, and meshes with the bevel gear 33 attached to the swivel shaft 32 in the same module. .. Further, the rotary knob 22 is attached to the swivel shaft 32 so as to partially project onto the base 2, but the swivel shaft 32 is rotatably supported by the base 2 via a bearing (not shown). When the rotary knob 22 is rotated, the rotational force of the rotary knob 22 is transmitted to the spiral bevel gear 32 via the swivel shaft 33 and the bevel gear 34, and the tilt table 30 at the point α about the point O, that is, the display device 1. A swivel mechanism 35 for rotationally driving in the W direction is composed of a spiral bevel gear 32, a swivel shaft 32, a bevel gear 33, and a rotary knob 22.

Next, the operation of the second embodiment of the present invention having the above structure will be described.

First, when the tilt mechanism 29 is operated to rotate the display device 1 in the X direction or the Y direction to set the display angle of the display device 1 at an easy-to-see angle, the switch 20, One of the switches 21 is turned on, and the DC motor 28 is rotated in the direction corresponding to the switch that is turned on. The rotational force of the DC motor 28 is transmitted to the worm gear shaft 11 via the bevel gears 27, 26, and the worm gear 12 supported by the worm gear shaft 11 rotates. When the worm gear 12 rotates, the rotational force of the worm gear 12 is transmitted to the worm wheel 10 meshing with the worm gear 12, so that the worm wheel 10 converts the rotational movement of the worm gear 12 into a linear movement and tilts the display device 1. It slides on the table 30 in the Z direction. Therefore, the rotational driving force of the DC motor 28 is transmitted to the worm wheel 10, and the display device 1 is rotated in the X direction or the Y direction.

By the way, in order to transmit the force from the worm wheel 10 to the worm gear 12, due to the characteristics of the worm wheel 10 and the worm gear 12, as in the first embodiment described above, the rotational force of the direct current motor 28 is changed to the worm wheel 12. Contrary to the case of transmitting to 10, the display device 1 does not slide on the tilt table 30 by its own weight even if the frictional force of the tilt mechanism 25 is weak.

On the other hand, when the display device 1 is rotated in the W direction by operating the swivel mechanism 35 and the display angle of the display device 1 is set to be an easy-to-see angle, a drive source protruding from the base 2 is used. The rotating knob 22 is rotated, the rotational force of the rotating knob 22 is transmitted to the bevel gear 34 via the swivel shaft 33, and the bevel gear 34 is rotated. When the bevel gear 34 rotates, the rotational force of the bevel gear 34 is transmitted to the bevel bevel gear 32, and the bevel bevel gear 34 makes a rotational movement around a point O, and the bevel gear 32 is integrally formed. The tilt base 30 that is also rotated on the base 2 on which the circumferential portion 30b of the tilt base 30 is supported, and the display device 1 is rotated in the W direction. Therefore, the rotational driving force of the rotary knob 22 is transmitted to the spiral bevel gear 32, and the display device 1 is set at an angle that is easy to see.

By the way, the force transmitted to the helical bevel gear 32 is determined by the ratio of the pitch cycle of the bevel gear 34 and the helical bevel gear 32. Generally, the rotational force for rotating the rotary knob 22 is the helical bevel gear. It is only a tenth of the force transmitted to 32. Therefore, it is possible to rotate the display device 1 by turning the rotary knob 22 with a small force, and the display device 1 can be rotated with one hand. It is possible to adjust the angle of the display screen.

On the other hand, in order to transmit the force from the spiral bevel gear 32 to the bevel gear 34, due to the characteristics of the spiral bevel gear 32 and the bevel gear 34, the rotational force of the rotary knob 22 described above is transmitted to the spiral bevel gear 32. On the contrary to the case of transmitting the power, the display device 1 does not rotate on the base 2 by its own weight because it requires a force of several tens of times.

Since the tilt mechanism 29 is attached to the tilt base 30 and the swivel mechanism 35 is attached to the base 2 as described above, each mechanism can be operated independently.

In the above embodiment, the rotation knob 22 is applied as the drive source of the swivel mechanism 35. However, the invention is not limited to this, and a direct current motor is applied as in the case of the tilt mechanism 29. May be.

Further, although the present invention is applied to the LCD / CRT display device of the information processing device in the above-described embodiment, the present invention is not limited to this, and can be applied to a display device in another device requiring adjustment of the display angle. You may apply.

Further, the present invention is not limited to the above embodiments, and it goes without saying that various modifications can be made without departing from the gist of the present invention.

[0045]

[Effect of the device]

 As described in detail above, according to the angle adjusting mechanism of the display device of the present invention, the rotational force of the tilt drive unit is transmitted to the worm wheel via the worm gear, and the display device slides along the tilt base. The angle of the display screen of the display device can be adjusted to any angle in the vertical direction, and the angle can be set to be easy to see. .

Further, the angle adjusting mechanism of the display device of the present invention comprises a tilt mechanism for sliding the display device along the tilt table and a swivel mechanism for rotating the tilt table holding the display device on the base. As a result, the angle of the display screen of the display device is adjusted to an arbitrary angle in the vertical direction and the horizontal direction, and is set to an angle that is easy to see two-dimensionally.

[Brief description of drawings]

FIG. 1 is a sectional view showing an angle adjusting mechanism of a display device according to a first embodiment of the present invention.

FIG. 2 is an external view of an information processing device to which an angle adjusting mechanism of a display device according to a second embodiment of the present invention is applied.

FIG. 3 is a cross-sectional view taken along line CC of FIG. 2, showing an essential part of the present invention.

FIG. 4 is a bottom view from the direction D in FIG. 3, showing an essential part of the present invention.

FIG. 5 is an external view of an information processing apparatus including a conventional angle adjusting mechanism of a display device.

6 is a cross-sectional view taken along the line AA in FIG. 5, showing a main part of a tilt mechanism.

[Explanation of symbols]

 1… Display device 2… Base 4… Back cover (display device) 6… Tilt base 10… Worm wheel 12… Worm gear 13… Rotation knob (tilt drive part) 22… Rotation knob (swivel drive part) 28… DC motor (tilt) Drive part) 30 ... Tilt table 30b ... Circumferential part 32 ... Spiral bevel gear 34 ... Bevel gear

Claims (5)

[Scope of utility model registration request] 1. An angle adjusting mechanism of a display device, wherein a bottom surface is formed of a curved surface having a predetermined curvature, for adjusting an angle of a display surface of the display device, the sliding surface being formed of a curved surface concentric with the curved surface. A tilt base that holds the worm wheel, a worm wheel integrally attached to the bottom surface of the display device and having a pitch circle concentric with the curved surface, a worm gear that meshes with the worm wheel in the same module, and a shaft of the worm gear. An angle adjusting mechanism for a display device, comprising: a tilt driving unit that transmits a driving force to the worm wheel via the worm gear and slides the display device along the tilt base. 2. The angle adjusting mechanism for a display device according to claim 1, wherein the tilt driving unit is a DC motor. 3. The angle adjusting mechanism for a display device according to claim 1, wherein the tilt driving unit is a rotary knob. 4. An angle adjusting mechanism of a display device, wherein a bottom surface is formed of a curved surface having a predetermined curvature, and an angle of a display surface of the display device is adjusted. And a base for rotatably supporting the circumference of the tilt base and a tilt base having a flange-shaped circumference on the bottom, and integrally attached to the bottom surface of the display device. The worm wheel having a pitch circle concentric with the curved surface, a worm gear that meshes with the worm wheel in the same module, and a drive force transmitted to the worm wheel via the worm gear and connected to the shaft of the worm gear to display the display device. A tilt drive section that slides along the tilt table, a spiral bevel gear integrally formed on the circumference of the tilt table, and a spiral bevel gear. Rotate the bevel gear meshing with the same module and the tilt base that is connected to the shaft of the bevel gear and transmits the rotational force to the spiral bevel gear via the bevel gear to hold the display device on the base. And a swivel drive section for controlling the angle of the display device. 5. The angle adjusting mechanism for a display device according to claim 4, wherein the swivel driving unit is a rotary knob.