JPH0545687U - Projection stand - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a projection table capable of preventing tampering and theft. [Structure] A pair of left and right top plates 5 and 5 slides in a horizontal reciprocal direction to open or close an upper opening 4 of a base 1. A lock mechanism K is provided between the tops 5 and 5 and the base 1 to regulate the slide of the tops 5 and 5 and maintain the closed state.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a projection table.

[0002]

[Prior Art]

 In a projection table in which a pair of left and right top plates slide horizontally in opposite directions to open or close the upper opening of the base, a projector and the like are generally housed in the base.

[0003]

[Problems to be solved by the device]

 Therefore, in the past, by sliding the top plate and opening the upper opening of the base, you can easily take out and operate the projector inside, etc., and it can be mischievous or stolen. There were cases.

Therefore, an object of the present invention is to provide a projection table which is not tampered with by an expensive projector inside.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention provides a projection table according to the present invention, in which a pair of left and right top plates slide in a horizontal reciprocal direction to open or close the upper opening of the base. In the projection table, a lock mechanism is provided between the top plate and the base so as to regulate the slide of the top plate and hold the closed state.

In addition, in another projection table according to the present invention, a pair of left and right top plates slides in a horizontal reciprocal direction to open or close the upper opening of the base, and at the front of the base. In a projection table equipped with a front door that covers an opening, locking pins are hung vertically at the corners of the inner and front sides of each top plate, and the front and rear movement is possible and swinging is possible. An engaging piece is attached to the center of the front upper frame of the base, and an operating piece that allows the engaging piece to be pulled out forward when the front door is open is connected to the engaging piece. , A pair of rear opening-like engagement members for arranging an elastic member for pressing the engaging / disengaging piece rearward in the center of the front upper frame, and for engaging the engaging pin with the engaging / disengaging piece in a detachable manner. Guide the locking notch and the locking pin locked in the locking notch in a direction in which they are separated from each other by pulling the engaging piece forward. The first slanted portion for guiding and releasing the locking and the sliding of the top plate in the approaching direction move the engaging / disengaging piece forward against the elastic force of the elastic member, and the locking is performed. And a second inclined portion that guides and guides the pin to the locking cutout portion.

[0007]

[Action]

 According to the above-described projection table, when the upper opening of the base is closed, the slide of the top plate is restricted by the lock mechanism, and only the person concerned can open the table.

Further, according to the other projection table described above, when the front door is opened and the operating piece is operated to pull out the engaging piece forward, the engaging piece is engaged with the engaging notch. The locking pins that have been moved are guided and guided by the first inclined portion and move in the directions in which they are separated from each other. In other words, the locking of the locking pin is released, and the left and right top plates slide in the direction in which they are separated from each other, so that the top plate can slide in the opening direction.

On the contrary, when the top plate is slid in the direction from the open state to the closed state (that is, the approaching direction of the top plate), the locking pin moves the engaging / disengaging piece forward and the second inclination. The guide plate is guided into the section and locked in the locking notch, and the top plate is locked.

Therefore, according to this other projection table, the top plate in the closed state cannot be slid unless the front door is opened, and the upper opening of the base can be opened. Absent.

[0011]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the drawings illustrating an embodiment.

1 to 4 show a projection table according to the present invention, which includes a base 1 and a pair of front doors 3 and 3 for covering a front opening 2 of the base 1. A pair of left and right top plates 5 and 5 for covering the upper opening 4 of the base 1 are provided. The upper opening 4 is slid in the opposite directions to open or close the upper opening 4.

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

The base 1 is provided with 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. Further, inside the base 1, a mounting table 12 on which a video deck 11 and the like are mounted, and a stage table 13 and the like that can move up and down are provided. A projector 14 such as a liquid crystal projector is placed on the stage table 13.

A front upper frame 15 connected to the left and right side walls 7 and 8 is provided above the front opening 2, and a front rail 16 for a top plate is fixed to the front upper frame 15 and a rear wall 9 is provided. The rear rail 17 for the top plate is fixed to the upper end of the.

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

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

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

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

That is, as shown in FIG. 6, the lock mechanism K is a locking pin vertically installed on the corner portions 22 and 22 (see FIG. 3) of the inner side 20 and the front side 21 of the top plate 5. 23, 23, an engagement / disengagement piece 24 attached to the center of the front upper frame 15, elastic members 25, 25 for pressing the engagement / disengagement piece 24 rearward, and the engagement / disengagement piece 24 can be pulled out forward. And an operation piece 26 to be used.

Specifically, as shown in FIG. 5, the locking pin 23 includes a bolt member 28 having a screw hole portion 27 of the top plate 5 into which a screw portion 28 a is screwed, and the bolt member 28. And a cylindrical sleeve 29 fitted on the body portion 28b. That is, the sleeve 29 has its length dimension substantially the same as the body portion 28b of the bolt member 28, its inner diameter dimension substantially equal to the outer diameter dimension of the body portion 28b, and its outer diameter dimension of the bolt member 28. The outer diameter of the head portion 28c is substantially the same, and the head portion 28c is rotated with respect to the bolt member 28 as shown by arrows M and N in FIG.

Further, the engagement / disengagement piece 24 is formed of a flat plate body, and as shown in FIG. 6, is provided with a substantially rectangular main body portion 30 and rearwardly protruding from both ends of the rear side 30 a of the main body portion 30. It consists of small projecting piece portions 31, 31 having a substantially right-angled triangle shape, and a large projecting piece portion 32 projecting rearward from the central portion of the rear side 30a of the body portion 30.

The large protruding piece portion 32 is composed of a substantially rectangular neck portion 32a and an inverted trapezoidal head portion 32b that is connected to the neck portion 32a.

Therefore, the large protruding piece portion 32 is provided with the first sloping portions 33, 33 which are sequentially inclined inward toward the front, and the small protruding piece portions 31 and 31 are sequentially outward toward the front. Second inclined portions 34, 34 that incline toward one side are provided.

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

Further, a pair of slits 38 are provided at both ends of the front side 30b of the main body 30, and a pair of elastic members 25, 25 arranged at the center of the front upper frame 15 correspond to each other. It is fitted in the slit 38, 38, 38, 38, 38.

Therefore, the engagement / disengagement piece 24 is always elastically urged rearward.

By the way, as shown in FIG. 5, the front upper frame 15 has upper and lower walls 15a and 15b, a front wall 15c that connects the upper and lower walls 15a and 15b, and a hanging portion that is vertically provided from a rear end of the upper wall 15a. The main body 30 of the engaging / disengaging piece 24, which is composed of the wall 15d, is interposed between the front wall 15c of the front upper frame 15 and the hanging wall 15d.

Further, in the hanging wall 15d, there are provided small hole portions 40, 40 for allowing the small protruding piece portions 31, 31 to protrude rearward, and a large hole portion 41 for allowing the large protruding piece portion 32 to protrude rearward. , Are provided.

That is, in the normal state, since the engagement / disengagement piece 24 is pressed backward by the elastic members 25, 25, the rear side 30a of the main body portion 30 is in contact with the inner surface 42 of the hanging wall 15d. Is becoming

As shown in FIG. 5, the operation 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 projection protruding forward from the vertical wall 26b. A horizontal wall 26c and a hanging wall 26d vertically extending from the front end of the horizontal wall 26c. The engaging / disengaging piece 24 is placed on the horizontal wall 26a, and the engaging / disengaging piece 24 is attached via a mounting tool 43 made of a bolt. Connected to the piece 24.

That is, the main body portion 30 of the engagement / disengagement piece 24 is provided with the screw hole 44, and the horizontal wall 26a of the operation piece 26 is provided with the through hole 45, which penetrates from the back surface side of the horizontal wall 26a. The threaded portion of the fixture 43 is screwed into the screw hole 44 through the hole 45.

A through hole 46 is formed in the front wall 15c of the front upper frame 15, and the hanging wall 26d is exposed to the front through the through hole 46.

Therefore, when the hanging wall 26d of the operating piece 26 is pulled forward as indicated by the arrow X in FIG. 6, the engagement / disengagement piece 24 is pulled forward against the elastic force of the elastic members 25, 25.

The engagement / disengagement piece 24 can be swung with respect to the operation piece 26 around the attachment tool 43 as indicated by arrows H and I.

Therefore, the engagement / disengagement piece 24 can be moved in the front-rear direction and can swing.

Since the operation piece 26 is provided at the center of the front upper frame 15, as shown in FIG. 4, when the front opening 2 is covered with the front doors 3 and 3, the operation piece 26 is closed. 26 is covered with front doors 3 and 3 and is not exposed to the outside.

Therefore, in order to operate the operation piece 26 and pull the engagement / disengagement piece 24 forward, it is necessary to open the front doors 3, 3.

Further, the front door 3 is provided with a lock 47, and the front doors 3, 3 are locked in the closed state.

Then, as shown in FIG. 6, when the locking pins 23, 23 are locked in the locking notches 37, 37 of the engaging and disengaging piece 24, the top plates 5, 5 are As shown in FIG. 3, the inner sides 20, 20 are in contact with each other, and the upper opening 4 is closed.

From this state, the hanging wall 26d of the operation piece 26 is put on the hand and pulled forward (that is, in the direction of the arrow X), and the engagement / disengagement piece 24 is moved forward against the elastic force of the elastic members 25, 25. When pulled out, as shown in FIG. 7, the locking pins 23, 23 come into contact with the first inclined portions 33, 33.

When the operating piece 26 is further pulled out from this state in the direction of the arrow X, the locking pins 23, 23 move in the directions in which they are separated while being guided and guided by the first inclined portions 33, 33, respectively. As shown in FIG. 8, the locking pins 23, 23 are disengaged from the notches 37, 37, the top plates 5, 5 move in the directions of arrows C, D, respectively, and the inner sides 20, 20 are separated from each other. A gap 48 is created between 5 and 5.

Therefore, when the top plates 5 and 5 are slid in the directions of the arrows C and D, which are separated from each other, 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 arrow X direction is released, and the engagement / disengagement piece 24 returns to the state shown in FIG.

Next, by sliding the top plates 5 and 5 from the open state in the directions of approaching each other as shown by arrows A and B, first, as shown in FIG. Touches the second inclined portions 34, 34 of the engagement / disengagement piece 24.

From this state, when the top plates 5 and 5 are further slid in the directions of arrows A and B, the engaging and disengaging pieces 24 are sequentially pressed forward through the second inclined portions 34 and 34, as shown in FIG. As shown in FIG. 6, if the locking pins 23, 23 cross the small projecting piece portions 31, 31, and further slide in the A and B directions, the locking pins 23, 23 are locked as shown in FIG. It is locked to the notches 37, 37. That is, the upper opening 4 is closed.

In the above case, the two top plates 5 and 5 are slid at the same time to change from the open state to the closed state. However, as shown in FIG. Only the top plate 5 can be slid in the direction of arrow A to be in 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 that state, the top plate 5 can be further slid in the direction of arrow A. For example, the locking pin 23 moves in the arrow A direction while pressing the second inclined portion 34 forward.

Therefore, as shown in FIG. 12, the engagement / disengagement piece 24 swings in the direction of the arrow H around the fixture 43 and moves forward as shown by the arrow X, whereby the locking pin 23 is released. When the top plate 5 is slid in the direction of arrow A beyond the small protruding piece portion 31, the locking pin 23 is locked in the notch portion 37, and the engaging / disengaging piece 24 is in the state shown in FIG. Return to.

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

That is, as shown in FIG. 13, the top plate 5 on the left side is slid in the direction of the arrow B so that the locking pin 23 is brought into contact with the second inclined portion 34, and from this state, the top plate 5 is further arrowed. When it is slid in the B direction, the locking pin 23 moves in the arrow B direction while pressing the second inclined portion 34 forward.

Therefore, as shown in FIG. 14, the engagement / disengagement piece 24 swings in the direction of the arrow I around the fixture 43 and moves forward as shown by the arrow X, whereby the locking pin 23 is released. When the top plate 5 is slid in the direction of the arrow B beyond the small projecting piece portion 31, the locking pin 23 is locked in the notch portion 37, and the engaging / disengaging piece 24 is in the state shown in FIG. Return to.

Then, as shown in FIGS. 11 and 12, when the right top plate 5 is closed, the locking pin 23 of the left top plate 5 is locked as shown by an imaginary line. If the engaging / disengaging piece 24 is moved forward in the direction of the arrow X as shown in FIG. The locking pin 23 does not come off from the notch 37.

On the contrary, as shown in FIG. 13 and FIG. 14, when the left top plate 5 is closed, the locking pin 23 of the right top plate 5 is engaged as shown by an imaginary line. If the engagement / disengagement piece 24 is moved forward in the direction of arrow X as shown in FIG. The locking pin 23 does not come off from the notch 37.

Therefore, according to the projection table configured as described above, as shown in FIG. 4, the top plates 5 and 5 are closed and the front doors 3 and 3 are closed, and the lock 47 is used. When the front doors 3 and 3 are locked, the lock mechanism K is in the state (locked state) shown in FIG. 6, the tops 5 and 5 cannot be slid, and the projector 14 in the base 1 is not able to slide. It is impossible to take out or touch the etc.

When using the projector 14 or the like inside, if the lock 47 is unlocked and the front doors 3 and 3 are opened, the operation piece 26 is exposed to the outside for the first time, and the operation piece 26 is exposed. When the operation piece 26 is pulled out forward, the lock mechanism K is unlocked as described above, and the inner sides 20, 20 of the top plates 5, 5 which are in contact with each other are separated, The tops 5 and 5 can be easily slid. In FIG. 4, 50 is a handle.

Further, as shown in FIG. 5, the lower horizontal piece 16b of the front rail 16 for the top plate is provided with a cover piece 49 which is face-to-face with the large protruding piece 32 of the engaging / disengaging piece 24. This prevents the lock mechanism K from being unlocked when the front door is closed. Of course, the cover piece 49 is provided in a range that does not interfere with the sliding of the locking pins 23.

That is, if there is no cover piece 49, and 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 inside the base 1 When the engaging and disengaging piece 24 is pushed forward, the locked state is released and the top plates 5 and 5 can be opened.

On the other hand, if the cover piece portion 49 is provided, even if a thin member is inserted through the gap, the cover piece portion 49 interferes and prevents the engagement / disengagement piece 24 from being pressed forward. Yes, it is impossible to unlock.

Further, in the above-described embodiment, since the locking pin 23 is rotatable with respect to the bolt member 28 and the sleeve 29, it is guided and guided by the first and second inclined portions 33 and 34. At that time, the guidance will be given smoothly.

[0060]

[Effect of the device]

 Since the present invention is configured as described above, it has the following effects.

According to the projection stand of the first aspect, the lock mechanism K restricts the slide of the top plates 5 and 5 to maintain the closed state, so that the expensive projection machine 14 and the like in the base stand 1 It cannot be taken out or touched by anyone other than the user, and theft, tampering, and danger can be prevented.

According to the projection table of the second aspect, unless the front doors 3 and 3 are opened, the closed tops 5 and 5 cannot be slid, and the front doors 3 and 3 are locked. If this is done, like the projection stand described in claim 1, no one other than the concerned person can take out or touch the expensive projector 14 etc. without permission.

Further, in the closed state, if the engagement / disengagement piece 24 is pulled out forward through the operation piece 26, the locked state of the top plates 5, 5 is easily released, and the respective top plates 5, 5 are slid. If the top plates 5 and 5 are slid in the direction in which they approach each other in the open state, the locking pins 23, 23 move the engaging / disengaging piece 24 forward. Since it moves while pushing out and is locked to the locking notches 37, 37, the opening and closing operations of the top plates 5, 5 are simple and can be performed reliably.

[Brief description of drawings]

FIG. 1 is a front view of an open state of a front opening according to an embodiment of the present invention.

FIG. 2 is a side view.

FIG. 3 is a plan view.

FIG. 4 is a front view of a front opening 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 view.

FIG. 11 is an operation explanatory view.

FIG. 12 is an operation explanatory view.

FIG. 13 is an operation explanatory view.

FIG. 14 is an operation explanatory view.

[Explanation 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 engaging / disengaging piece 25 resilient member 26 operating piece 33 first inclined section 34 Second inclined part 37 Notch for locking K Lock mechanism

Claims (2)

[Scope of utility model registration request] 1. A projection table in which a pair of left and right top plates 5 and 5 slide in horizontal reciprocal directions to open and close an upper opening 4 of a base 1, The projection table is characterized in that a lock mechanism K for restricting the slide of the top plates 5 and 5 and holding the closed state is provided between the base and the base 1. 2. A pair of left and right top plates 5 and 5 slide in opposite horizontal directions to open and close the upper opening 4 of the base 1 and to open the front opening 2 of the base 1. In the projection table equipped with the front door 3 to be covered, the inner side 20 of each top plate 5 and 5,
Locking pins 23, 23 are provided vertically at the corners 22, 22 of the 20 and the front sides 21, 21, and are movable in the front-rear direction and swingable.
24 is attached to the center of the front upper frame 15 of the base 1, and an operating piece 26 that allows the engaging / disengaging piece 24 to be pulled out forward when the front door is open is connected to the engaging / disengaging piece 24. In addition, the elastic members 25, 25 for pressing the engagement / disengagement piece 24 rearward are attached to the front upper frame 15
It is arranged in the center, and the engaging pin is attached to the engaging piece 24.
A pair of rear opening-shaped locking notches 37 and 37 at which 23 and 23 are releasably locked, and the locking pins 23 and 23 locked to the locking notches 37 and 37, respectively. The elastic member is formed by the first inclined portions 33, 33 for guiding and guiding the detached pieces 24 in the direction in which they are separated from each other by pulling them forward and the top plates 5, 5 to slide in the approaching direction. Second inclined portions 34, 34 for guiding and guiding the locking pins 23, 23 to the locking notches 37, 37 while moving the engaging and disengaging pieces 24 forward against the elastic force of 25, 25.
And a projection stand characterized by being formed.