JPH0898115A - Tilt swivel lock mechanism in display device - Google Patents

Abstract

PURPOSE: To efficiently packing work by locking a main body part in a prescribed position so that it is not rotated/inclined against a stand when a display device is not grounded. CONSTITUTION: When the CRT display device 1 is moved up, pressure pressing the tip part 35a of a sensor body 33 is eliminated, the compressed energizing force of a coil spring 37 is released and the coil spring 37 is extension-restored between a spring restraint projection 36 and the rib 31b of a stopper 29. The sensor body 33 totally moves downward by the extension force until the lower surface of the engagement part 34 of the sensor body 33 is abutted on the upper end surface 21a of the central part 21 of an engagement support part 19 and it stops. The engagement part 34 of the sensor body 33 in the stand 17 is engaged with the notch 16a of a guide hole 16 in such a state, and the rotation/tilt of the main body part 2 are automatically locked.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tilt swivel lock mechanism for a novel display device. More specifically, in a display device having a tilt swivel mechanism, when the display device is lifted, the tilt swivel mechanism is locked so that the stand or the like does not tilt or rotate under its own weight, and the packing work is efficiently performed. In addition to being able to perform the operations, it is possible to efficiently perform operations such as image quality adjustment in a display device using a CRT on the assembly line.

[0002]

2. Description of the Related Art A display device using a CRT (so-called CRT) is mainly used as a display device for a computer.

Such a display device is composed of a main body containing a CRT, a circuit board and the like and a stand connected to the main body by a tilt swivel mechanism. The display is supported by the stand and is mainly installed on a table or the like. It

In the display device, the stand is grounded at a place where a desk or the like is installed to support the main body portion thereon, and the tilt swivel mechanism tilts and rotates the main body portion to optimize the visibility for the user. The structure is such that the viewing angle can be adjusted as described above.

[0005]

By the way, in the tilt swivel mechanism in the conventional display device as described above, the tilt swivel mechanism allows the main body of the display device to rotate and tilt. When packing display devices,
Since the packing work is automated by using a dedicated jig, the main body part and the stand are locked by the tilt swivel mechanism so as to have a predetermined positional relationship so as not to rotate or tilt. is necessary.

That is, if the main body and the stand are not in a predetermined positional relationship, there arises a disadvantage that the automatic insertion of the display device into the packing material cannot be smoothly performed.

Therefore, the display device is, for example,
A tilt swivel mechanism was locked by inserting a spacer between the main body and the stand so as not to tilt due to its own weight.

However, in the locking method using the spacer as described above, it is possible to prevent the rotation and tilting due to the movement of the main body when the display device is placed,
When the display device is lifted, especially when the stand itself is large and heavy like a stand having a board and a speaker inside, the stand moves due to the weight of the stand, and the predetermined positional relationship between the main unit and the stand is disturbed. It is not possible to prevent it from happening, and when packing with the tilt swivel mechanism locked by the spacer etc., it was necessary for the user to remove the spacer etc. after unpacking and unlock it. .

Further, even on a display device assembly line, in a display device using a CRT as a display means, a jig is pressed against the CRT tube surface to adjust the image quality, so that the CRT tube surface is predetermined. However, even if the CRT tube surface is facing a predetermined direction, the jig moves when the jig is pressed against the CRT tube surface.

Therefore, on such a line,
A special jig for exclusive use is used to lock the tilt swivel mechanism, and once the lock by the jig is released, it is difficult to relock it.

[0011]

In order to solve the above-mentioned problems, the swivel lock mechanism in the display device of the present invention detects whether or not the display device is grounded by the sensor body provided on the stand. In conjunction with this, when the display device is grounded, the main body is rotatable and tiltable with respect to the stand, and when the display device is not grounded, the main body is rotated and tilted with respect to the stand at a predetermined position. It was designed to be locked.

[0012]

Therefore, in the swivel lock mechanism of the display device of the present invention, when the display device is lifted or the like, that is, when the display device is not grounded, the ground sensor senses this and the tilt swivel mechanism is automatically operated. Since it is locked mechanically, the packing work can be performed efficiently.

Also on the assembly line, the tilt and swivel mechanism can be locked by simply using a dedicated pallet, and the lock can be released and re-locked any number of times.

[0014]

The details of the display device of the present invention will be described below with reference to the illustrated embodiments.

1 to 10 show an example in which the tilt swivel lock mechanism in the display device of the present invention is applied to a CRT display device.

Reference numeral 1 denotes a CRT display device, which comprises a main body in which a circuit board and a CRT are housed in a synthetic resin housing and a synthetic resin stand for supporting the main body, as will be described later.

Reference numeral 2 is a main body, and a housing 3 of the main body 2 is formed by combining a front frame body, a rear cover and a bottom cover.

Reference numeral 4 denotes a front frame body, which is composed of a substantially frame-shaped front panel 5 and a peripheral wall 6 projecting rearward from an outer peripheral edge of the front panel 5, and the front panel 5 is provided with a display portion 7a of a CRT 7. An opening 5a whose front surface faces the front is formed.

A rear cover 8 is composed of a top plate 9, left and right side plates 10 and 11, and a back plate 12, and is opened forward and downward and has a large diameter at its front end. The front end portions 10 and 11 are projected outward, and the enlarged front end portions are engaged and attached to the upper portion of the peripheral wall 6 of the front frame 4 and the rear end edges of the left and right side portions by appropriate means. To be done.

Reference numeral 13 denotes a bottom cover, which mainly covers the lower surface of the rear cover 8. The front end portion 13a formed to be wider than the rear portion has a front surface similar to the rear cover 5. It is engaged and attached to the rear end edge of the lower portion of the peripheral wall 6 of the frame body 4.

Further, as shown in FIG. 3, the bottom cover 13 has a central substantially circular region curved downward and projected, that is, a spherical recess 14 when viewed from above and a spherical recess 14 when viewed from below. A convex portion 15 is formed, and a guide hole 16 extending in the front-rear direction is formed at the center of the concave portion 14 (the protruding portion 15 when viewed from below) when viewed from above.

Numerals 16a, 16a are notches provided in the guide hole 16 so as to face left and right at a position closer to the front from the center in the front-rear direction.

Reference numeral 17 denotes a stand, which has a certain thickness and has a leg portion 18 having a substantially square shape when viewed from above.
And an engaging support portion 19 which is slightly cylindrically protruded upward from the center of the leg portion 18 and is integrally formed.

When viewed from above, the upper surface of the engagement support portion 19 has a rib-shaped outer edge portion 20 continuously formed on the outer edge of the engagement support portion 19 in the circumferential direction and a convex portion occupying a substantially rhombic region. A concave portion 22 is formed except for the central portion 21, which is a portion, and the outer edge portion 20 and the upper end surfaces 20a, 21a of the central portion 21 both contact the protrusion 15 of the bottom cover 13 from below to support the main body portion 2. The surface is a concave spherical surface that occupies a part of one continuous surface corresponding to the surface shape of the protrusion 15.

It should be noted that the inside of the stand 17 is made substantially hollow so as to be quantified, and although detailed illustration is omitted, for example, a reinforcing rib 17b formed in a grid pattern,
It is reinforced by 17b.

An engaging hole 23 extending in the front-rear direction is formed through the outer shell 17a at approximately the center of the upper end surface 21a of the central portion 21.

Reference numeral 24 denotes a tilt swivel support portion in which a certain area is surrounded by a surrounding wall, and the bottom cover 13
Engaging with the engaging hole 16 and sliding and rotating relatively in the engaging hole 16, and the configuration thereof, as shown in FIGS. The surrounding wall is formed so as to surround the periphery of the substantially H-shaped region including the portion where the engaging hole 23 is formed, and the left and right end portions 25, 25 facing each other along the opening edge of the engaging hole 23 are The slits 25a, 25a, which are formed in a substantially arc shape and have a slightly wide width, are formed in the center so as to oppose each other on the left and right.

Further, in the tilt swivel support portion 24, a slit 26 is also provided at the center of the bridge portions 26, 26 extending in the bridge-like shape extending in the left-right direction in parallel with the upper portion of the engaging hole 23.
a and 26a are provided, and at the same time, the erected portions 26 and 26 also extend downward in a plate shape to form engaging portions 27 and 27.

.. are connected to the left and right end portions 25, 25 of the tilt swivel support portion 24 and the erected portions 26, 26 and extend in parallel along the opening edge of the engagement hole 23. It is a connecting part.

Reference numeral 29 denotes a stopper, which is composed of a substantially disk-shaped main portion 30 having a certain thickness and engaging pieces 31, 31 extending downward from the main portion 30 and facing each other while being spaced apart in the front-rear direction. It is formed integrally.

A concave portion 32 that opens downward is formed in the center of the lower surface 30a of the main portion 30 of the stopper 29, and the engaging pieces 31 and 31 project downward from inside the concave portion 32. .

The engaging pieces 31, 31 are formed at intervals so that the bridges 26, 26 of the tilt swivel support 24 are exactly sandwiched from the outside, and the engaging pieces 31, 31 are formed.
The width of 31 is substantially the same as the width of the erected portions 26, 26.

In addition, engaging claws 31a, 31a are formed on the surfaces of the tips of the engaging pieces 31, 31 facing each other, and
Ribs 31b and 31b extending in the up-down direction are integrally formed so as to face each other on the surfaces of the engagement pieces 31 and 31 that face each other from a substantially intermediate position to the tips where the engagement claws 31a and 31a are provided.

Reference numerals 32a, 32a are notches formed by notching the opening edge of the recess 32 at positions separated by 180 degrees so as to sandwich the engaging pieces 31, 31 from the left and right, as will be described later. This is for preventing the engagement portion of the sensor body, which will be described later, from interfering with the stopper 29 when the CRT display device 1 is grounded and the engagement portion moves upward.

The lower surface 30a of the main portion 30 of the stopper 29 forms a part of a spherical surface corresponding to the surface shape of the recess 14 of the bottom cover 13 except for the portion where the recess 32 and the notches 32a, 32a are formed. Is being done.

Reference numeral 33 denotes a sensor body, as shown in FIG.
4 and a columnar portion 35 extending downward from the center of the lower surface of the column 4, and spring locking protrusions 36, 36 near the tip of the columnar portion 35.
Are formed so as to be separated from each other by approximately 180 degrees in the circumferential direction, and the tip end portion 35a has a rounded and smooth curved surface.

The length of the column portion 35 is the length of the stand 1
When the tilt swivel lock mechanism, which will be described later, is activated (locked), the engaging portion 34 is engaged with the guide hole 16 of the bottom cover 13. The length is such that the tip portion 35a projects from the lower side of the stand 17 by about 1 cm when engaged with the notches 16a, 16a.

Further, 37 is a cylindrical portion 35 of the sensor body 33.
Is a coil spring externally fitted to the spring locking projections 36, 3
It is supported from below by 6 to prevent it from coming off.

The sensor body 33 has a structure as shown in FIGS.
As shown in FIG. 0, the columnar portion 35 is arranged so as to extend downward from the substantial center of the tilt swivel support portion 24 of the stand 17, and at the same time, the engaging portion 34 is fitted in the left and right slits 25a, 25a.

The guide hole 16 in the bottom cover 13
The tilt swivel support 24 is slidably engaged from the side of the protrusion 15, and the stopper 29 is externally fitted and fixed to the tilt swivel support 24 from the inner surface of the bottom cover 13, that is, the side of the recess 14.

That is, the engaging pieces 31, 31 of the stopper 29
The tilt swivel support 24 in the engagement hole 23 from above.
Of the ribs 31b and 31b and the slits 26a and 26 at the same time.
a is pressed downward so as to engage with a, and the engaging claws 31a, 31a are engaged with the lower edges of the engaging portions 27, 27 to be fixed.

Then, the bottom cover 13 is attached to the stand 1
7, the concave portion 14 (the convex portion 15) is sandwiched from above and below by the outer edge portion 20 of the engagement support portion 19 and the upper end surfaces 20a, 21a of the central portion 21 and the lower surface 30a of the stopper 29. Become so.

The tilt and swivel lock mechanism 38 is constructed as described above.

Then, the stand 17 and the bottom cover 1
3 is integrated with the tilt swivel support portion 24 of the tilt swivel lock mechanism 38 via the stopper 29, and the tilt swivel support portion 24 is slidable and rotatable back and forth along the guide hole 16 of the bottom cover 13, that is, tilt. The swivel becomes free.

Therefore, as described above, the bottom cover 13
Since the CRT display device 1 constitutes a part of the main body portion 2 of the CRT display device 1, the tilt swivel lock mechanism 38 inevitably allows the CRT display device 1 to tilt, rotate and lock the main body portion 2 as described below. Becomes

Next, the lock of the bottom cover 13 (main body 2) and the stand 17 at a predetermined position by the tilt swivel lock mechanism 38 will be described.

That is, in the normal state, FIG. 8 and FIG.
As shown in 0, the tip portion 35a of the sensor body 33 protruding from the lower portion of the stand 17 is pressed upward by the ground surface, and the engaging portion 34 is also positioned above the guide hole 16 of the bottom cover 13.

In this state, the coil spring 37, which is externally fitted to the cylindrical portion 35 of the sensor body 33 and is positioned between the spring locking projections 36, 36 and the rib 31b of the stopper 29, is placed between them. The sensor body 33 is compressed as it becomes narrower, so that the sensor body 33 is always given a biasing force in the direction of moving it downward.

Then, for example, when the CRT display device 1 is lifted, the tip portion 35a of the sensor body 33 is formed.
Nothing has been pressed, and the urging force of the compressed coil spring 37 is released, and the coil spring 37 expands and restores between the spring locking projections 36, 36 and the rib 31b of the stopper 29, and this expansion force The body 33 moves as a whole downward, that is, as shown in FIG. 9, until the lower surface of the engaging portion 34 of the sensor body 33 comes into contact with the upper end surface 21a of the central portion 21 of the engaging support portion 19 and stops. .

Then, in this state, the engagement portion 34 of the sensor body 33 has the cutouts 16a, 16a of the guide hole 16.
, Which locks the rotation and tilting of the body 2 automatically.

When the CRT display device 1 in which the main body 2 is already tilted or rotated is lifted, even if the sensor body 33 moves downward, the engaging portion 34 and the notch 16a of the guide hole 16 are formed. , 16a are displaced, the locking is not performed. However, if the main body 2 or the stand 17 is rotated or tilted so as to align the positions, the engagement portion 34 and the notches 16a, 16a are aligned with each other. At that time, the engaging portion 34 is engaged with the notches 16a, 16a of the guide hole 16 and locking is performed.

As described above, the tilt swivel lock mechanism 38 automatically detects that the CRT display device 1 is in the lifted state and locks it. Therefore, for example, when the image quality of the CRT 7 is adjusted. As shown by the chain double-dashed line in FIG. 9, if an appropriate recess 40 is provided at the center of the pallet 39 on the line, the CRT display device 1 can be lifted, that is, from the bottom of the stand 17. Tip portion 35 of the protruding sensor body 33
Since there is nothing for pressing a, the main body 2 is in a state of being locked for sliding and rotation.

[0053]

As is apparent from the above description, the tilt swivel lock mechanism in the display device of the present invention has a main body portion including a CRT, a circuit board, etc. and is attached to the main body portion. In a tilt swivel lock mechanism in a display device that rotatably and tiltably connects a main body of a display device including a stand supported by a stand, a sensor provided on the stand detects whether or not the display device is grounded. In conjunction with this, when the display device is grounded, the main body is rotatable and tiltable with respect to the stand, and when the display device is not grounded, the main body is rotated and tilted with respect to the stand at a predetermined position. It is characterized by being locked.

Therefore, in the swivel lock mechanism of the display device of the present invention, when the display device is lifted or the like, that is, when the display device is not grounded, the ground sensor detects this and the tilt swivel mechanism is automatically operated. Since it is locked mechanically, the packing work can be performed efficiently.

Also on the assembly line, the tilt and swivel mechanism can be locked only by using a dedicated pallet, and the lock can be released and re-locked any number of times.

It should be noted that the specific shapes and structures shown in the above embodiments are merely examples of the implementation of the present invention, and the technical scope of the present invention is limited by these. Is not to be interpreted.

[Brief description of drawings]

FIG. 1 is a perspective view of a CRT display device showing an example of implementation of a tilt swivel lock mechanism in a display device of the present invention.

FIG. 2 is a bottom view of the bottom cover.

FIG. 3 is a front view of a bottom cover.

FIG. 4 is a plan view showing a state where the stand is viewed from above.

5 is a cross-sectional view taken along the line VV of FIG.

FIG. 6 is an enlarged bottom view showing the stopper.

FIG. 7 is an enlarged perspective view showing an engagement support portion of a stand and a sensor body.

FIG. 8 is an enlarged vertical cross-sectional view of a main part when the CRT display device is installed on a table or the like.

FIG. 9 is an enlarged vertical cross-sectional view of a main part of the CRT display device in a lifted state and a state in which the CRT display device is placed on a dedicated pallet on a line.

FIG. 10 is an enlarged vertical sectional view of a main part showing the state of FIG. 8 from another angle.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 CRT display device 2 Main body part 7 CRT 17 Stand 33 Sensor body 34 Engagement part 35a Tip part 37 Repulsion means (coil spring) 38 Tilt swivel lock mechanism in display device (tilt swivel lock mechanism)

Claims (2)

[Claims] 1. A display device for connecting a main body of a display device, which comprises a main body containing a CRT, a circuit board, etc., and a stand attached to the main body to support the main body from below and the stand to be rotatable and tiltable. In the tilt swivel lock mechanism in, the sensor provided on the stand detects whether or not the display device is grounded, and in conjunction with this, when the display device is grounded, the main body is rotated with respect to the stand. A tilt swivel lock mechanism for a display device, wherein the tilt swivel lock mechanism is configured to be tiltable and to lock the main body at a predetermined position so as not to rotate and tilt with respect to the stand when the display device is not grounded. 2. The sensor body is constantly urged by the elastic means so that the tip of the sensor body projects downward from the lower surface of the stand, and when the stand is not grounded, the engaging portion of the sensor body is part of the main body. When the stand is grounded, the tip of the sensor body is pressed by the grounding surface to move the sensor body upward to engage the main body with the engaging portion and the main body. The tilt swivel lock mechanism in the display device according to claim 1, wherein the engagement is released and the main body is rotatable and tiltable.