JP2585934Y2 - Projection table - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention relates to a projection table.

[0002]

2. Description of the Related Art In a projection table in which a pair of left and right top plates slide in opposite horizontal directions to open or close an upper opening of a base, a projector or the like is generally housed in the base. doing.

[0003]

Therefore, conventionally, when the top plate is slid to open the upper opening of the base, the internal projector and the like can be easily taken out and operated. Were stolen or stolen.

Accordingly, an object of the present invention is to provide a projection table that does not cause mischief or the like in an expensive internal projector or the like.

[0005]

According to the present invention, in order to achieve the above-mentioned object, one projection table according to the present invention comprises a pair of left and right top plates slid in opposite horizontal directions to open the upper opening of the base. while the parts in the open state to the closed state, between the top plate and base, a locking mechanism for holding the closed state to regulate the sliding of the top plate, a projection table provided, the lock mechanism
Are engaged with the locking pins provided on each top plate,
Lock freely and regulate the slide of each top plate in the locked state
The lock pins are separated from each other
The top plate is separated from each other by sliding in the direction
A disengagement piece whose state is released, and the disengagement piece
And an operation piece that allows the piece to be pulled out to the front .

In another projection table according to the present invention, a pair of left and right top plates slide in opposite horizontal directions to open or close an upper opening of the base, and a front of the base. On a projection table equipped with a front door that covers the opening, a locking pin is suspended at the corner between the inner side and the front side of each top plate, and it is movable in the front-rear direction and can swing. An engaging piece is attached to the center of the front upper frame of the base, and an operating piece that enables the engaging piece to be drawn forward in the front door opened state is connected to the engaging piece. A resilient member for pressing the engaging piece rearward is disposed at the center of the front upper frame, and a pair of rear opening-shaped engaging members are provided on the engaging piece so that the locking pin is detachably engaged. The stop notch and the locking pin locked in the locking notch are guided in a direction away from each other by pulling the engaging piece forward. A first inclined portion for releasing the engagement,
A second inclined portion for guiding the locking pin to the locking notch while moving the engaging piece forward against the elastic force of the elastic member by sliding the top plate in the approaching direction; When,
Is formed.

[0007]

According to the above-mentioned one projection table, when the upper opening of the base is closed, the sliding of the top plate is restricted by the lock mechanism, and the top plate can be opened by anyone other than the persons concerned. Can not. Also, by pulling out the operating piece, the locking pin
The lock of the piece is released and the locked state is released.
When the top plate slides away from each other,
A gap is formed in the gap. For this reason, the subsequent opening of each
Sliding in the direction becomes easy.

Further, according to the above-mentioned other projection table, when the front door is opened and the operation piece is operated to pull out the engagement piece, the engagement piece is locked in the locking notch of the engagement piece. The locking pin that has been moved is guided by the first inclined portion and moves in a direction away from each other. In other words, the locking of the locking pin is released, and the left and right top plates slide in a direction away from each other, so that the top plate can slide in the opening direction.

Conversely, if the top plate is slid in the direction from the open state to the closed state (ie, the approach direction of the top plate),
The locking pin is guided and guided by the second inclined portion while moving the engagement piece forward, and is locked in the locking notch, and the top plate is locked.

Therefore, according to this other projector, unless the front door is opened, the closed top cannot be slid, and the upper opening of the base cannot be opened. .

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings showing embodiments.

1 to 4 show a projection table according to the present invention,
The projection table includes a base 1, a pair of front doors 3 and 3 for covering a front opening 2 of the base 1, and a pair of left and right top plates for covering an upper opening 4 of the base 1. The pair of left and right top plates 5 and 5 slide in opposite horizontal directions as indicated by arrows A, B, C and D shown in FIG. 3 to bring the upper opening 4 into an open state or a closed state. .

The front doors 3, 3 are swingable as indicated by arrows E, E via a hinge mechanism (not shown) attached to the outer side. The front door 3 may of course be one piece.

The base 1 has a bottom wall 6, left and right side walls 7, 8 and a rear wall 9, and the bottom wall 6 is provided with casters 10. A video deck 11 is provided inside the base 1.
And the like, and a stage table 13 that can be moved up and down.
Etc. are provided. A projector 14 such as a liquid crystal projector is mounted on the stage base 13.

Above the front opening 2, there is provided a front upper frame 15 which is connected to the left and right side walls 7, 8.
In addition, a front rail 16 for a top board is fixed, and a rear rail 17 for a top board is fixed to an upper end of the rear wall 9.

The top rails 16 and 17 are upper and lower horizontal pieces.
16a, 16b, 17a, 17b and vertical pieces 16c, 17c, the front and rear ends 5a, 5b of the top plates 5, 5 are fitted.

The front end 5a and the rear end 5b of the top plate 5
As shown in FIG. 5, sliders 18 having a small coefficient of friction are provided so that the top plate 5 can be slid smoothly.

A front bar mounting member 19a is fixed to the front rail 16 for the top plate, and a front bar 19b is locked to the mounting member 19a.

Thus, between the top plates 5, 5 and the base 1, a lock mechanism K for restricting the slide of the top plates 5, 5 is provided.

That is, as shown in FIG. 6, the lock mechanism K includes a corner portion 22 between the inner side 20 and the front side 21 of the top plate 5,
22 (see FIG. 3);
It is attached to the center of the front upper frame 15 and engages with the locking pins 23.
Removably lock and slide the top plates 5 and 5 in the locked state.
Lock pin 2 by pulling it out toward you.
3 and 23 slide in the direction away from each other, and
Are separated from each other to release the locked state.
And resilient members 25, 25 for pushing the engagement piece 24 rearward.
And an operation piece 26 that allows the engagement piece 24 to be pulled out forward.

More specifically, as shown in FIG. 5, the locking pin 23 includes a bolt member 28 into which a screw portion 28a is screwed into a screw hole 27 of the top plate 5, and a body of the bolt member 28. And a cylindrical sleeve 29 fitted externally to the portion 28b. In other words, the length of the sleeve 29 is substantially the same as that of the body 28b of the bolt member 28, the inner diameter of the sleeve 29 is substantially the same as the outer diameter of the body 28b, and the outer diameter is the head of the bolt 28. The outer diameter of the bolt member 28c is substantially the same as that of the bolt member 28, and rotates with respect to the bolt member 28 as shown by arrows M and N in FIG.

Further, the engaging / disengaging piece 24 is formed of a flat plate, as shown in FIG.
As shown in the figure, a substantially rectangular main body 30, small right-angled triangular small protruding pieces 31, 31 projecting rearward from both ends of a rear side 30a of the main body 30; And a large projecting piece 32 projecting rearward from the center of the rear side 30a.

The large projecting piece 32 has a substantially rectangular neck.
32a and an inverted trapezoidal head 32b connected to the neck 32a.

Therefore, the large protruding piece 32 is provided with the first inclined portions 33, 33 which are sequentially inclined inward toward the front, and the small protruding pieces 31, 31 are sequentially provided outwardly from the front. There are provided second inclined portions 34, 34 which are inclined to the right.

An engaging notch 37 is formed by the inner side surface 35 of the small projecting piece 31, the side face 36 of the neck 32 a of the large projecting piece 32, and the rear side 30 a of the main body 30.

Further, a pair of slits 38 are provided at both ends of the front side 30b of the main body 30, respectively, and a pair of resilient members 25, 25 disposed in the center of the front upper frame 15 correspond to each other. Into the slits 38, 38, 38, 38 to be formed.

Accordingly, the engaging / disengaging piece 24 is constantly urged rearward.

As shown in FIG. 5, the front upper frame 15 includes upper and lower walls 15a and 15b, a front wall 15c connecting the upper and lower walls 15a and 15b, and a hanging wall extending from the rear end of the upper wall 15a. Wall 15d
The main body 30 of the engagement / disengagement piece 24 is a front wall of the front upper frame 15.
It is interposed between 15c and the hanging wall 15d.

Further, small protruding pieces 31, 31 are provided on the hanging wall 15d.
Small holes 40, 40 for projecting rearward and large projecting piece 32
And a large hole portion 41 for projecting rearward.

That is, in the normal state, the engaging / disengaging piece 24 is a resilient member.
Since it is pressed backward at 25, 25, the rear side of the main body 30
30a is in contact with the inner surface 42 of the hanging wall 15d.

As shown in FIG. 5, the operating piece 26 is provided with a horizontal wall 26a, a vertical wall 26b vertically extending from the front end of the horizontal wall 26a, and a front protruding from the vertical wall 26b. A horizontal wall 26c and a hanging wall 26 suspended from a front end of the horizontal wall 26c;
The engaging piece 24 is placed on the horizontal wall 26a, and is connected to the engaging piece 24 via a mounting member 43 composed of a bolt.

That is, the screw hole 44 is provided in the main body 30 of the engagement / disengagement piece 24.
Is provided in the horizontal wall 26a of the operation piece 26.
Is provided, and the screw portion of the attachment 43 is screwed into the screw hole 44 via the through hole 45 from the rear surface side of the horizontal wall 26a.

The front wall 15c of the front upper frame 15 has a through hole 46.
The hanging wall 26d is exposed forward through the through hole 46.

Accordingly, if the hanging wall 26d of the operation piece 26 is pulled forward as shown by the arrow X in FIG.
It is pulled forward against the resilience of 25, 25.

The engaging piece 24 can be swung with respect to the operating piece 26 around the fitting 43 as shown by arrows H and I.

Therefore, the engaging / disengaging piece 24 is movable in the front-rear direction and swingable.

Since the operation piece 26 is provided at the center of the front upper frame 15, when the front opening 2 is covered with the front doors 3, 3, as shown in FIG. 26 is covered with the front doors 3 and 3 and is not exposed to the outside.

Therefore, in order to operate the operation piece 26 and pull out the engagement piece 24 forward, the front doors 3 need to be opened.

The front door 3 is provided with a lock 47, which is locked in the closed state.

Thus, as shown in FIG.
In a state in which the locking members 3 and 23 are locked in the locking notches 37 and 37 of the engaging and disengaging piece 24, the top plates 5 and 5, as shown in FIG.
As a result, the upper opening 4 is closed.

In this state, the user puts his hand on the hanging wall 26d of the operation piece 26 and pulls it forward (that is, in the direction of the arrow X) to move the engagement piece 24 forward against the elastic force of the elastic members 25, 25. When pulled out, as shown in FIG. 7, each locking pin 23, 23 comes into contact with the first inclined portion 33, 33.

When the operating piece 26 is further pulled out from this state in the direction of arrow X, the locking pins 23
The guide pins 3 and 33 move in the direction away from each other while being guided and guided, and as a result, as shown in FIG.
7 and 37, and the top plates 5 and 5 are indicated by arrows C and D, respectively.
, The inner sides 20 and 20 are separated from each other, and a gap 48 is formed between the top plates 5 and 5.

Therefore, if the top plates 5 and 5 are slid in the directions of arrows C and D away from this state, the upper opening 4 of the base 1 is opened. Of course, in this state, the pulling force of the operation piece 26 in the direction of the arrow X is released, and the engagement / disengagement piece 24 returns to the state shown in FIG.

Next, from the open state, each of the top plates 5 and 5 is indicated by an arrow A
If you slide in the direction approaching each other like B,
As shown in FIG. 9, first, the locking pins 23, 23 are
Abut on the second inclined portions 34, 34.

When the top plates 5 and 5 are further slid in the directions of arrows A and B from this state, the engaging / disengaging piece 24 is moved to the second inclined portion.
As shown in FIG. 10, the locking pins 23, 23 are pushed forward through the small projecting pieces 31, 31 and continue to slide in the directions A, B. Stop pins 23, 23
Are locked in the locking notches 37, 37 as shown in FIG.
That is, the upper opening 4 is closed.

In the above case, however, the two top plates 5
5 are simultaneously slid to change from the open state to the closed state, but as shown in FIG.
Only one can be slid in the direction of arrow A to bring it into the closed state.

That is, the top plate 5 on the right side is slid in the direction of arrow A to bring the locking pin 23 into contact with the second inclined portion 34, and from this state, the top plate 5 is further slid in the direction of arrow A. For example, the locking pin 23 moves in the direction of arrow A while pressing the second inclined portion 34 forward.

Accordingly, as shown in FIG.
At the same time as swinging in the direction of arrow H about the mounting fixture 43, it moves forward as indicated by arrow X, whereby the locking pin 23 moves over the small protruding piece 31 and further moves the top plate 5 in the direction of arrow A. When slid, the locking pin 23 locks into the notch 37,
The engagement piece 24 returns to the state shown in FIG.

Further, only the other (left side) top plate 5 can be slid in the direction of arrow B to be in the closed state.

That is, as shown in FIG. 13, the top plate 5 on the left side is slid in the direction of arrow B, and the locking pin 23 is moved to the second inclined portion.
If the top plate 5 is further slid in the direction of arrow B from this state, the locking pin 23 moves in the direction of arrow B while pressing the second inclined portion 34 forward.

Therefore, as shown in FIG.
While swinging in the direction of arrow I about the mounting fixture 43,
As a result, the locking pin 23 moves beyond the small protruding piece 31 and the top plate 5 is further slid in the direction of arrow B to lock the locking pin 23 in the notch 37. Along with
The engagement piece 24 returns to the state shown in FIG.

As shown in FIGS. 11 and 12, when the right top plate 5 is closed, the locking pins 23 of the left top plate 5 If the engagement piece 24 is locked in the notch 37, as shown in FIG. 12, when the engagement piece 24 moves forward in the direction of the arrow X and swings about the attachment 43 as shown by the arrow H, The locking pin 23 does not come off the notch 37.

On the contrary, as shown in FIGS. 13 and 14, when the left top plate 5 is closed, the locking pins 23 of the right top plate 5 are locked as shown by phantom lines. 14, the engaging piece 24 moves forward in the direction of the arrow X as shown in FIG. 14, and when the engaging piece 24 swings around the fixture 43 as shown by the arrow I, The locking pin 23 does not come off the notch 37.

Therefore, according to the projection table configured as described above, as shown in FIG. 4, the top plates 5, 5 are closed, the front doors 3, 3 are closed, and the lock 47 is used. Front door 3,3
Is in the locked state, the lock mechanism K is in the state shown in FIG. 6 (locked state), the top plates 5 and 5 cannot be slid, and the projector 14 and the like in the base 1 are taken out.
I can't touch it.

When the internal projector 14 and the like are used, the lock of the lock 47 is released and the front doors 3 and 3 are opened, so that the operation piece 26 is exposed to the outside for the first time. When the operation piece 26 is pulled forward, the lock of the lock mechanism K is released as described above, and the inner sides 20, 20 of the abutting top plates 5, 5 are separated. The sliding operation of each of the top plates 5, 5 is facilitated. In FIG. 4, reference numeral 50 denotes a handle.

Further, the lower horizontal piece 16b of the front rail 16 for the top plate
As shown in FIG. 5, the large protruding piece 32 of the engagement piece 24 is provided with a facing cover piece 49 so as to unlock the lock mechanism K when the front door is closed. Preventing. Of course, the cover piece 49 is provided in a range that does not hinder the sliding of the locking pins 23,23.

That is, if the cover piece 49 is not provided, if there is a slight gap between the inner sides 20, 20 of the top plates 5, 5 in the closed state, a thin member is moved from the gap into the base 1. , And the locking piece 24 is pressed forward, the locked state is released, and the top plates 5, 5 can be opened.

On the other hand, if the cover piece 49 is provided, even if a thin member is inserted from the gap, the cover piece 49 can obstruct and prevent the engaging piece 24 from being pressed forward. Can,
Unlocking is not possible.

In the above embodiment, the locking pin 23 is
Since the sleeve 29 is rotatable with respect to the bolt member 28, when the guide is guided to the first and second inclined portions 33 and 34, the guide is smoothly performed.

[0060]

Since the present invention is configured as described above, the following effects can be obtained.

According to the projection table of the first aspect , unless the operation piece 26 is pulled out by the lock mechanism K, the operation table 26 is not moved.
The locked state is not released, and the slide of the top plates 5 and 5 is restricted and the closed state is maintained, so that the expensive projector 14 or the like in the base 1 can be taken out or touched by anyone other than the person concerned. It is not possible to prevent theft, mischief, and danger. Further, the operation piece 26 is pulled out to the front.
After that, the top plates 5, 5 are separated from each other, and a gap is provided between the top plates 5, 5.
A gap 48 is formed between the top plates 5 and 5.
The slide operation becomes easy.

According to the projection table of the second aspect, the front door 3,
If the top plate 3 is not in the open state, the top plates 5 and 5 in the closed state cannot be slid, and if the front doors 3 and 3 are locked, the same as the projection table according to claim 1, except for the persons concerned. The expensive projector 14 or the like cannot be taken out or touched.

Further, in the closed state, if the engaging piece 24 is pulled forward through the operating piece 26, the locked state of the top plates 5, 5 is easily released, and the top plates 5, 5 are slid. To the open state, and in the open state, the top plates 5, 5
Slide in the direction of approaching each other.
The opening and closing operations of the top plates 5 and 5 can be performed simply and reliably because the members 3 and 23 move while pushing the engagement piece 24 forward and lock the locking notches 37 and 37.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the present invention in a state where a front opening is opened.

FIG. 2 is a side view.

FIG. 3 is a plan view.

FIG. 4 is a front view of the front opening in a closed state.

FIG. 5 is an enlarged sectional side view of a main part.

FIG. 6 is an enlarged sectional plan view of a main part.

FIG. 7 is an operation explanatory view.

FIG. 8 is an operation explanatory view.

FIG. 9 is an operation explanatory view.

FIG. 10 is an operation explanatory diagram.

FIG. 11 is an operation explanatory view.

FIG. 12 is an operation explanatory diagram.

FIG. 13 is an operation explanatory diagram.

FIG. 14 is an operation explanatory view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base 2 Front opening 3 Front door 4 Upper opening 5 Top plate 15 Front upper frame 20 Inner side 21 Front side 22 Corner 23 Locking pin 24 Disengagement piece 25 Resilient member 26 Operation piece 33 1st inclined part 34 2nd inclined section 37 Notch for locking K Lock mechanism

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) G03B 21/00

Claims (2)

(57) [Scope of request for utility model registration] 1. A pair of top plates 5, 5 slides in the horizontal opposite directions, with the upper opening 4 of the base 1 and the open state to the closed state, the top plate 5 and 5 and the base 1 A projection mechanism provided with a lock mechanism K for regulating the slide of the top plates 5 and 5 to maintain the closed state.
Are locking pins 23 provided on each of the top plates 5;
The locking pins 23, 23 are removably locked to form the locking shape.
The top and bottom slides 5 and 5
The direction in which the locking pins 23 are separated from each other in the drawer
The top plates 5 and 5 are separated from each other by sliding in the
Is disengaged, and the engagement and disengagement piece 24
An operation piece 2 that allows the engagement piece 24 to be pulled out to the front.
6. A projection table comprising: 2. A pair of left and right top plates 5, 5 slide in opposite horizontal directions to open or close the upper opening 4 of the base 1, and to close the front opening 2 of the base 1. On a projection table equipped with a front door 3 to be covered, the inner sides 20,
Engagement pins 23, 23 are suspended from corner portions 22, 22 of the front sides 21, 21 and can be moved in the front-rear direction and can be swung.
24 is attached to the center of the front upper frame 15 of the base 1, and an operation piece 26 that enables the engagement piece 24 to be pulled forward in the open state of the front door is connected to the engagement piece 24. Further, the resilient members 25, 25 for pushing the engagement piece 24 rearward are attached to the front upper frame 15 as described above.
At the center, the locking pin is
A pair of locking notches 37, 37 in the form of a rear opening in which the locking members 23, 23 are detachably locked, and the locking pins 23, 23 locked in the locking notches 37, 37, are engaged with the locking member. The first resilient member 33 is guided by the pulling-out piece 24 forward and guided in a direction away from each other to release the locking, and the resilient member is formed by sliding the top plates 5 and 5 in the approaching direction. The second inclined portions 34, 34 for guiding the locking pins 23, 23 to the locking notches 37, 37 while moving the engagement piece 24 forward against the resiliency of the locking members 25, 25.
And a projection table characterized by forming: