JPH0630820A - Elevating mechanism and equipment storage desk having the mechanism - Google Patents

Abstract

PURPOSE:To provide a small size equipment storage desk which can prevent wiring or the like from being entangled even when a top plate is elevated, and which can effectively use a space. CONSTITUTION:A front frame 1, a rear plate 3 and a pair of side plates 5, 5 are combined with each other in a parallelepiped shape so as to form a desk body having an inside space in which a top plate 9 is stored. The front frame 1 is composed of an outer plate 13, a frame 15 and an inner plate 17 which are superposed with one another in the mentioned order. An upper sprocket 29, a lower sprocket 31 and a drive source 33 are arranged on the frame 15, and a looped chain 35 are wound around the upper and lower sprockets 29, 31 and the drive source 33. A support arm 45 for supporting the top plate 9 is attached to the chain 35 between the upper and lower sprockets 29, 31.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevating mechanism for elevating and lowering a support plate for supporting articles, and an OA device or the like arranged on the top plate by elevating and lowering the top plate by this elevating mechanism. The present invention relates to a device storage desk that is stored inside a desk body when not in use and can be pulled out to the outside when used.

[0002]

2. Description of the Related Art Conventionally, a lot of equipment storage desks have been proposed in which OA equipments, OHPs (overhead projectors), etc. are stored inside when not in use and can be pulled out to the outside when in use (actual development 55 -34429, 62
-111436, etc.). In these desks, a box-shaped desk body is provided with a storage space with an open upper side, and a top plate that can be raised and lowered by an appropriate means is stored in the storage space, and the top plate is moved up and down to move the top plate. Storage of equipment placed on
Take out. As the top plate lifting mechanism, a large guide rail is arranged vertically in the storage space, and the sliding member is manually slid along the guide rail to lift the top plate mounted on the sliding member. Thing (actual development 55-34429
No.) or a screw shaft arranged vertically in the storage space, and a nut plate screwed onto the screw shaft is attached to a top plate, and the screw shaft is rotated forward and backward by a motor. −111436
No.) etc.

[0003]

By the way, in the desk of the type that raises and lowers the top plate as described above, in order to ensure a smooth raising and lowering operation of the top plate, or because of aesthetic problems, the wiring of the equipment and the power supply A cord or the like is drawn into a space below the top plate from a hole provided in the top plate, and is led to the outside from here through a hole provided in the back plate of the desk body.

However, in any of the above-described lifting mechanisms, the constituent elements such as the guide rail, the sliding member, the screw shaft, and the nut piece are exposed in the accommodating space. For this reason, when the top plate is moved up and down, wiring or the like is caught in the sliding contact portion or the threaded portion between the guide rail and the sliding member or the screw shaft and the nut piece, and the movement of the top plate is hindered. There is a risk that the wiring may be broken.

On the other hand, as a means for avoiding such a problem, it is considered that the guide rail and the screw shaft are housed in the side plate of the desk body. However, in order to accommodate the screw shaft and the large-sized guide rail, it is necessary to provide a relatively large storage space in the side plate, and an increase in the thickness of the side plate cannot be avoided. Therefore, the space occupied by the desk becomes large and the space cannot be effectively used.

Therefore, the present invention provides an elevating mechanism having a small required thickness, and at the same time, a small equipment storage desk which does not cause winding of wiring or the like when elevating the top plate and can effectively utilize the space. The purpose is to provide.

[0007]

[Means for Solving the Problems] To achieve the above object,
The device of the present invention is a mechanism for moving up and down a support plate that supports an article,

[0008] An upper wheel body and a lower wheel body which are housed at upper and lower positions of the inner space of the stationary structure having a double structure, and an output shaft projecting into the inner space of the stationary structure are rotatable forward and backward. The support plate includes a drive source, an output shaft of the drive source that is housed in the internal space of the stationary structure, and a drive force transmission member that is stretched in a loop shape on the upper wheel body and the lower wheel body. Is connected to a driving force transmission member located between the upper and lower wheels.

The driving force transmitting member is composed of a chain, a timing belt or a wire.

Further, a desk body formed by combining a front structure having a double structure, a back plate and a pair of side plates into a rectangular tube shape,
A desk for storing equipment, which is composed of a top plate that moves up and down in the internal space of the desk body,

An upper wheel body and a lower wheel body which are housed in upper and lower positions of the internal space of the front structure, and a drive source which can rotate forward and backward and whose output shaft projects into the internal space of the front structure. An elevation mechanism including an output shaft of the drive source housed in the internal space of the front structure, and a driving force transmission member stretched in a loop shape on the upper wheel body and the lower wheel body, The plate is connected to a driving force transmission member located between the upper and lower wheels.

The driving force transmitting member is composed of a chain, a timing belt or a wire.

[0013]

[Operation] When the drive source is rotated in the forward and reverse directions, the output shaft of the drive source,
The driving force transmission member stretched in a loop shape on the upper and lower wheels also rotates forward and backward in the internal space of the stationary structure. During this forward / reverse rotation, the driving force transmission member between the upper and lower wheel bodies moves up and down. As a result, the support plate connected to the driving force transmission member between the upper and lower wheels moves up and down.

When the driving force transmitting member is composed of a chain, a timing belt or a wire, the width of the internal space of the stationary structure for accommodating the driving member needs to be slightly larger than the width of the chain or the like. Therefore, the required thickness of the stationary structure is smaller than that in the case where the conventional lifting mechanism is housed.

Further, when the elevating mechanism is applied as an elevating means for the top plate of the equipment storage desk, since each component of the elevating mechanism is housed in the internal space of the front structure, it is drawn into the space below the top plate. Wiring will not be caught in the lifting mechanism when the top plate is lifted. Further, similarly to the above, the required thickness of the front structure that houses the elevating mechanism is also small, so that a device storage desk that is smaller than the conventional product can be provided.

[0016]

Embodiments of the present invention will be described below with reference to FIGS.

FIG. 1 is a perspective view showing the overall structure of a device storage desk according to the present invention. As you can see, this desk
A desk body (7) formed by combining a front structure (1) having a double structure, a back plate (3), and a pair of side plates (5) (5) in a rectangular tube shape, and the inside of the desk body (7). It is composed of a top plate (9) housed in the space. The top plate (9) is driven by an elevating mechanism (11) housed inside the front structure (1) to move up and down.

As shown in FIG. 2, the front structure (1) is constructed by stacking an outer plate (13), a frame (15) and an inner plate (17). The frame (15) has a rectangular frame shape, and guide rails (21) (21) (21) (21) having a U-shaped cross section for engaging outer supporting edges (45) of both short sides of the four sides with a support arm (45) described later. ) Is bent and formed with the openings facing each other, and upper support portions (23) and lower support portions (25), which are also U-shaped in section, are bent and formed with the openings facing each other on the outer edges of both long sides. Has been done. A sub-frame (27) is installed between both short sides of the frame (15) so as to be appropriately separated from the lower long side. In the sub-frame (27), a storage portion (29) having a U-shaped cross section is formed in series along the longitudinal direction with the opening facing upward.

On the frame (15) having such a shape, upper and lower wheels (29), (29), (31) and (31) [for example, using a sprocket], a driving source (33), a driving force. An elevating mechanism (11) including transmission members (35) (35) [for example, using a chain] is provided. Hereinafter, the configuration of the lifting mechanism (11) will be described in detail.

Fixed shafts (37a), (37a), (37b) and (37b) are projected from the four corners of the frame (15). Of the fixed shafts (37a) (37a), (37b) (37b), a pair of fixed shafts (37a) (37a) provided above
Upper sprocket (29) (29) is mounted so that it can be driven, and lower sprocket (31) (31) is mounted so as to be driven by a pair of fixed shafts (37b) (37b) provided below.

At the center of the lower long side of the frame (15), one end is fixed to the lower support part (25) and the other end is fixed to the sub-frame (27). A drive source (33) is arranged via a drive source support (39). Drive source (3
3) is composed of a forward / reverse rotatable motor and a speed reducer, and its output shaft (not shown) projects inward of the drive source support (39). A pair of drive sprockets (41, 41) is connected to the output shaft via a gear train (not shown).

This drive sprocket (41) (41), upper sprocket (29) (29) and lower sprocket (3)
1) (31) includes a pair of chains (35) (3
5) is meshed and stretched in a loop and symmetrically. As a result, when the drive source (33) is normally and reversely rotated, the left and right chains (35) (35) are synchronously rotated in forward and reverse directions. At this time,
The arrangement of the gear trains (not shown) is selected in advance so that the left and right chains (35, 35) rotate in opposite directions.

Tension sprockets (43) (43) slidably movable in the vertical direction are arranged on both sides of the drive source support (39). The tension of the chain (35) is adjusted to an appropriate value by sliding the tension sprocket (43) in the vertical direction.

Reference numerals (45) and (45) denote support arms that connect the chains (35) and (35) to the top plate (9). The support arm (45) is formed of a thin metal plate as shown in FIG. 3, and has two traveling wheels (49) at the base end thereof with a thick rectangular support member (47) interposed. Pivoted. In addition, a top plate support portion (51) formed by bending the edge in the horizontal direction is provided on the upper portion of the support arm (45).

As shown in FIG. 4, the support arm (45).
The traveling wheels (49) are fitted into guide rails (21) provided on both sides of the frame (15). In addition, a pin or the like is used between the upper and lower sprockets (29) (31) at the rear end of the support arm (45), that is, the end of the surface opposite to the mounting surface of the support member (47). Positioning chains (35)
Is installed. With this structure, the chain (35)
Left and right support arms (45) following the forward and reverse rotation of (35)
(45) interlocks and moves up and down in the same direction.

By mounting the outer plate (13) on the surface of the frame (15) and the inner plate (17) on the opposite surface, the front structure (1) shown in FIG. 5 is constructed. At this time, the lower end of the inner plate (17) is stored in the storage section (29) provided in the sub-frame (27), and the upper end is mounted on the upper support section (23) provided in the frame (15). It The guide rails (21) (21) and the end surface of the inner plate (17) should be as close as possible to each other with a gap that allows the support arms (45) (45) to move up and down in order to prevent the wires from being caught. Keep it.

The front body (1) described above is combined with the pair of side plates (5) (5) and the back plate (3) to form the desk body (7) and the top plate provided on the support arm (45). By mounting the top plate (9) on the support part (51),
The device storage desk shown in FIG. 1 is configured. In this desk, since the lifting mechanism (11) for the top plate (9) is housed in the internal space of the front structure (1), the wiring and power supply for the OA equipment (53), etc. arranged on the top plate (9). A cord or the like (which is drawn into the lower space from a hole (not shown) provided in the top plate (9)) is not caught in the elevating mechanism by the elevating operation of the top plate (9). In addition, the thickness of the front structure (1) is the thickness of the chain (35).
Since the width of the desk can be suppressed to be slightly larger than the width, the floor area occupied by the desk can be reduced.

In FIG. 4, the guide rail (21) is drawn thicker to improve the visibility of the drawing, but by further downsizing this guide rail (21), the chain ( The front structure (1) having a thickness slightly larger than the width of 35) can be provided.

By the way, the front structure (1) can also be used as an elevating mechanism for supporting plates for supporting articles, for example, shelf plates and bed floor plates. That is, if the front structure (1) shown in FIG. 5 is mounted on the wall surface of the house, it is possible to move up and down the shelf plate and the like with the same configuration. In this case, since the thickness of the front structure (1) is thin as described above, the aesthetic appearance of the wall surface is not impaired even after the front structure (1) is attached. Further, if the front structure (1) is embedded in the wall surface, further improvement in aesthetics can be achieved.

As the driving force transmission means (35) constituting the lifting mechanism (11), a timing belt or a wire can be used in addition to the above-mentioned chain. In this case, it is necessary to use pulleys as the upper and lower wheels (29) (31).

[0031]

As described above, according to the elevating mechanism of the present invention, the thickness of the stationary structure accommodating the elevating mechanism can be made thinner than that of the conventional product. Specifically, when a chain, a timing belt or a wire is used as the driving force transmission member, the thickness can be set to be slightly larger than the width of the chain or the like. Therefore, even when the stationary structure itself is mounted on the wall surface of the house, the aesthetic appearance of the wall surface is not impaired. Further, it is possible to easily embed the stationary structure in the wall surface to further improve the aesthetic appearance.

Further, when the elevating mechanism is stored in the internal space of the front structure of the equipment storage desk, the thickness of the front structure can be reduced, so that the desk can be used even if it has the same top plate area as the conventional product. The floor space occupied by itself can be further reduced, and the space can be effectively used. Further, since the elevating mechanism is housed in the front structure, the wirings drawn into the space below the top plate are not caught in the elevating mechanism when the top plate is moved up and down. Therefore, the ascending / descending operation of the top plate is stabilized, and problems such as disconnection of wirings do not occur.

[Brief description of drawings]

FIG. 1 is a perspective view showing the overall configuration of a device storage desk according to the present invention.

FIG. 2 is a perspective view showing a structure of a frame.

FIG. 3 is a perspective view showing a structure of a support arm.

FIG. 4 is a cross-sectional view near the upper portion of a stationary structure or a front structure.

FIG. 5 is a perspective view showing an overall configuration of a stationary structure or a front structure.

[Explanation of symbols]

 1 Front structure 3 Rear plate 5 Side plate 7 Desk body 9 Top plate 11 Lifting mechanism 29 Upper sprocket 31 Lower sprocket 33 Drive source 35 Drive force transmission member

Claims (4)

[Claims] 1. A mechanism for raising and lowering a support plate for supporting an article, comprising: an upper wheel body and a lower wheel body housed at an upper position and a lower position of an inner space of a stationary structure having a double structure, respectively. Forward and reverse rotatable drive sources having an output shaft protruding into the internal space of the stationary structure, an output shaft of the drive source housed in the internal space of the stationary structure, and the upper wheel body and the lower wheel body. An elevating mechanism, comprising: a driving force transmission member stretched in a loop shape, wherein the support plate is connected to the driving force transmission member located between the upper and lower wheels. 2. The driving force transmitting member is a chain, a timing belt or a wire.
Lifting mechanism described. 3. A device for storing equipment, which comprises a desk body having a double-structured front structure, a back plate, and a pair of side plates combined in a rectangular tube shape, and a top plate for raising and lowering the internal space of the desk body. A desk, an upper wheel body and a lower wheel body housed at upper and lower positions of the internal space of the front structure, and a forward and reverse rotatable drive source having an output shaft protruding into the internal space of the front structure. And an elevating mechanism including an output shaft of the drive source housed in the internal space of the front structure, and a driving force transmission member stretched in a loop shape on the upper wheel body and the lower wheel body, A device storage desk characterized in that the top plate is connected to a driving force transmission member located between the upper and lower wheels. 4. The driving force transmitting member is a chain, a timing belt or a wire.
Desk for storing equipment described.