JPH10108736A - Side desk, wagon table and the like capable of adjusting height - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a side desk, a wagon table, piano chair, etc., properly adjusting the height of a top plate by simple structure and simple operation. SOLUTION: A leg 5 vertically movable by being guided by a leg receiver 4 is fixed to the top plate 3, and plural engaging recessed and projecting parts 4c and 4d with which the restraining part 6c of an operation lever 6 fixed to the side of the leg 5 or the top plate 3 is engaged are vertically provided the side plate part 4b of the receiver 4 and a bottom plate part 5a. On the other hand, the leg 5 is provided with a desired length and the restraining part of its operation lever 6 is elastically supported by the parts 4c and 4d through a spring in the state of being freely attachable and detachable. Then at the time of moving the leg upward, the leg 5 is pushed up, the part 6c is automatically disengaged from the parts 4c and 4d and restrained to the parts 4c and 4d at a desired position. At the time of moving the leg downward, the operation lever 6 is grasped to disengage the part 6c and the parts 4c and 4d to push up the leg 5 and the part 6c is restrained to the parts 4c and 4d.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a side table, a wagon table (also called a table wagon) and the like whose height can be appropriately adjusted. Specifically, if the seat plate is a top plate, a chair or the like in which the seat plate can be moved up and down is also included.

[0002]

2. Description of the Related Art Conventionally, a side table, a wagon table, a chair for a piano, and the like whose height can be changed are known, and for example, the mechanism is a pantograph type. The pantograph type has a structure in which the legs are strut-shaped and the degree of inclination can be changed.

[0003]

In the above-mentioned prior art, since a load is applied to the legs in an inclined state, there is a problem in consideration of strength and complexity of the structure.

[0004]

The side table, the wagon table and the like of the present invention have the following requirements. One of them is, for example, in a side table, a wagon table, or the like in which a top plate is movably mounted above the main body, a leg support is attached to both sides of the main body, and the leg support is attached to the top plate. A leg that moves up and down while being guided by a tool is attached, and the leg support includes a bottom plate that is long in the vertical direction and left and right side plates that are bent from both sides of the bottom plate. Alternatively, on the bottom plate portion, a plurality of engaging concave and convex portions are provided in the vertical direction to be engaged with the locking portions of the operation lever attached to the legs or the top plate side, while one leg has a desired length. A bottom plate and left and right side plates bent from both sides of the bottom plate in the longitudinal direction. Further, both sides of the legs or the top plate on both sides move up and down integrally with the legs and the top plate. The operating lever is mounted coaxially, and the operating lever is locked There are elastically supported through the engagement detachably spring to the engagement concave-convex portion, the locking portion by pushing up the legs upon upward movement of the legs be out automatically with the engaging uneven portion,
When the leg is moved downward, the operation lever is grasped to release the engagement between the locking portion and the engaging concave / convex portion, and the leg is pushed down. Side desks, wagon tables, etc., whose height can be adjusted, which are locked by the engaging concave and convex portions at desired positions. ".

[0005] The two are "in the above description, a height-adjustable side table, a wagon table, etc., characterized in that the legs on both sides are integrally formed in a U-shape."

[0006]

According to the present invention, articles can be placed on a top plate (also referred to as a base plate) such as a side table, a wagon table, a chair for a piano, etc. Is a structure that can be adjusted as appropriate, the structure is such that leg supports are attached to both sides of the main body in the longitudinal direction, and the legs can move up and down along the leg supports. To raise the tabletop, simply grasp the sides of the tabletop with both hands and lift it upwards.At a specified height, the locking part of the operation lever engages with the engaging uneven part of the leg support. I can support it.
Also, when descending, the handle of the operation lever is grasped, the engagement of the engagement portion of the operation lever with the engagement concave and convex portion of the leg receiver is disengaged, and the top plate and the leg are pushed down to a desired position below. In the same manner as described above, the engaging concave and convex portions of the leg support can be engaged with and supported by the engaging portions of the operation lever.

[0007] The leg supports attached to both sides of the main body may each be one at the center, or may be two at a predetermined interval as in the embodiment. Strength to withstand loads,
The number of leg supports may be determined in consideration of operability and the like. According to the present invention, the structure is simple, the assembling work is easy, the vertical operation is simple, and sufficient strength can be maintained.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. In FIGS. 1 and 2, reference numeral 1 denotes a side desk, which is provided with a caster at a lower portion of the main body, not shown. 2 is its main body, and 3 is a top plate. A leg support 4 is fixed to the main body at the center on both sides with a stopper. Reference numeral 5 denotes a leg, whose upper part is bent and attached to the top plate via a stopper as a U-shaped unit. The leg moves up and down guided by the leg support. The solid line top 3 and the legs 5 are in a state of being lifted and supported upward, and the top plate and legs indicated by the dotted lines are in a state of being lowered. At this time, the top plate is supported by the leg holder or the upper part of the main body. In the same manner as in the raised state, the legs may be supported by engaging the engaging portion of the operating lever with the concave and convex portions of the leg receiving member, or by supporting with a stopper fitting or the like attached to the main body. May be. For example, if the height of the top plate is adjusted so that the height of the top plate of the side table is equal to the height of the top plate of the desk, the arrangement of documents and the work efficiency are good. In addition, the side table can be stored in a space below the table top with the top plate of the side table lowered. This embodiment has a structure in which a large number of leg supports and legs are mounted at the center of both sides of the main body, and one having a structure capable of securing the strength is attached one by one. Good.

FIG. 3 shows the leg support 4. The leg holder 4 is formed by bending a steel plate, and includes a bottom plate 4a that is long in the vertical direction and left and right side plates 4b that are bent on both sides thereof. The side plate portion is formed in an L-shape over the entire length for guiding. However, on one side plate portion, a plurality of engaging concave and convex portions for engaging the locking portion of the operation lever 6 are formed. Specifically, an engagement recess 4c which is cut out at a predetermined interval is provided in the side plate portion.
This 4c is an engagement recess, and the uncut side plate portion 4d
Are the engagement projections. Reference numeral 4e denotes an attachment portion to which a leg support is attached to the main body via a stopper.

FIG. 4 shows a leg 5 of the desired length. The legs 5 are formed by bending a steel plate, and the legs on both sides are integrally formed with a connecting body 5d to have a substantially U-shape. The bottom plate 5 in the longitudinal direction
a and left and right side plates 5b, 5b bent from both sides thereof
And has a U-shape. One side of the side plate portion,
In other words, a notch 5c from which the locking portion of the operation lever 6 protrudes is formed below the side plate portion of the leg receiving device on the side provided with the engaging uneven portion.

FIG. 5 shows an operation lever. The operating lever 6 is rotatably mounted on the leg 5 in this embodiment. 6a
Is a lever body, which is bent at the upper end to form a handle portion 6b, and a lower end thereof is provided with a locking portion 6c made of a plastics molded body. The plastics molded article has good slip, low contact noise, and high strength, and is suitable for upward contact movement. The locking portion is locked or removed from the engagement recess by the rotation of the operation lever. 6d is a stop hole of the shaft pin for rotating the operation lever. This operation lever is formed symmetrically. Thus, the operation levers on both sides are fixedly or loosely connected to the shaft 6e so as to operate them coaxially when moving up and down.

FIGS. 6 and 7 show a state in which the leg and the operation lever are attached to the leg support. A leg 5 is slidably mounted on a leg support 4 attached to the main body 2. An operation lever 6 is rotatable on the leg 5 via a shaft pin 6f.
And it is elastically supported via a spring (not shown). Thus, the tip of the locking portion 6c of the operation lever projects outside through the engaging notch 5c formed by the cutout 5c of the leg and the cutout of the leg holder. This state is a state in which the locking portion of the operation lever is locked to the engaging projection 4b of the leg receiver. Therefore, since the operation lever is integrated with the leg and / or the top plate, the height of the leg and the top plate is maintained at a predetermined height. In the figure, the top plate is lifted slightly upward.

In order to further lift the top plate, if the user grips the top plate and pushes it upward, the operation lever also moves upward following the leg. In this case, since the locking portion is in a state of being urged by the spring, it rises while engaging and disengaging with the engaging uneven portion, engages with the engaging concave portion at a desired height, and is supported by the engaging convex portion. . Next, when the top plate is lowered, the handle 6b may be designed to be pushed down in the direction shown by an arrow or may be designed to be pushed up. In any case, the lever body 6a is rotated by the pushing operation of the handle. Then, the engaging portion 6c is disengaged from the engaging concave / convex portions 4b, 4c so that the vertical movement is free.
Next, the top plate and the legs may be lowered to desired positions to engage the locking portions with the engaging concave and convex portions. Since the operation levers on both sides move coaxially and integrally via the shaft, the height movement operation of the top plate is smooth.

FIG. 8 shows another embodiment of the present invention. At the tip of one of the L-shaped side plate portions 4b of the leg holder 4, a large number of locking uneven portions 4c and 4d are formed in a substantially sawtooth shape in the longitudinal direction. Reference numeral 6c denotes a locking portion of the operation lever 6, which is engaged with and supported by the locking recess 4c. The up and down operation of the legs is the same mechanism as in the previous embodiment. The same reference numerals as those in the above-described embodiment have the same configuration. Note that the operation lever 6 is mounted inside the leg in both embodiments and moves up and down integrally with the leg. However, the top plate also moves up and down integrally with the leg. Naturally, it can be easily understood that it can be rotatably mounted on the nearby top plate side via a mounting tool and the locking portion can be locked to the engaging concave and convex portion of the leg.

FIG. 9 shows still another embodiment. In this embodiment, two leg supports are attached to both sides of the main body at a predetermined interval. The opposing operation levers on both sides are coaxially connected via a shaft 6e. The operating levers on the same side have one end of the lever body extending to the center so that one handle 6b is located at the center. Therefore, the four lever bodies are simultaneously operated by the pushing operation of the grips 6b on both sides. Reference numeral 3a denotes a fixture attached to the top plate, which supports a handle of the operation lever.

[0016]

According to the present invention, articles can be placed on a top plate (also referred to as a base plate) such as a side table, a wagon table, a piano chair, etc., and the top plate is higher than the main body. Is a structure that can be adjusted as appropriate, the structure is such that leg supports are attached to both sides of the main body in the longitudinal direction, and the legs can move up and down along the leg supports. When lifting the tabletop, grasp the top and bottom sides of the tabletop with both hands and lift it upward.At a specified height, the locking part of the operation lever engages with the engaging concave and convex part of the leg holder. I can support it.
Also, when descending, the handle of the operation lever is grasped, the engagement of the engagement portion of the operation lever with the engagement concave and convex portion of the leg receiver is disengaged, and the top plate and the leg are pushed down to a desired position below. In the same manner as described above, the engaging concave and convex portions of the leg support can be engaged with and supported by the engaging portions of the operation lever. According to the present invention, the structure is simple, the assembling work is easy, the vertical operation is simple, and sufficient strength can be maintained.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a side desk showing one embodiment of the present invention.

FIG. 2 is a schematic front view of FIG.

FIG. 3 is a leg support attached to the main body of the side desk in FIG. 1, wherein A is a schematic front view, B is a schematic plan view, and C is a schematic left side view.

FIG. 4 is a schematic front view, and FIG. 4B is a schematic left side view, of legs attached to the top plate of the side desk in FIG.

5A and 5B show operation levers, where A is a schematic front view, B is a schematic plan view seen from a left side, and C is a schematic left side view.

FIG. 6 is a schematic front view showing a state in which the leg and the operation lever are attached to the leg support, and shows a state in which the leg is slightly lifted upward;

FIG. 7 is a schematic sectional view taken along line XX of FIG. 6;

FIG. 8 is a schematic front perspective view showing another embodiment of the leg support.

FIG. 9 is an explanatory perspective view showing still another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Side table 2 Main body 3 Top plate 4 Leg holder 4a Bottom plate part 4b Side plate part 4c Engagement concave part 4d Engagement convex part 5 Leg 5a Bottom plate part 5b Side plate part 6 Operation lever 6b Handle part 6c Lock part 6e Shaft

Claims (2)

[Claims] In a side table, a wagon table or the like having a top plate movably mounted above the main body, leg supports are attached to both sides of the main body, and the leg support is attached to the top plate. A leg that moves up and down while being guided by a tool is attached, and the leg support includes a bottom plate that is long in the vertical direction and left and right side plates that are bent from both sides of the bottom plate. Alternatively, on the bottom plate portion, a plurality of engaging concave and convex portions are provided in the vertical direction to be engaged with the locking portions of the operation lever attached to the legs or the top plate side, while one leg has a desired length. A bottom plate and left and right side plates bent from both sides of the bottom plate in the longitudinal direction. Further, both sides of the legs or the top plate on both sides move up and down integrally with the legs and the top plate. The operating lever is mounted coaxially, and the operating lever is locked Is engaged and disengaged via the spring so as to be able to freely engage and disengage with the engagement uneven portion, and when the leg is moved upward, the locking portion is automatically engaged and disengaged from the engagement uneven portion by pushing up the leg. When the leg is moved downward, the operating lever is grasped to release the engagement between the locking portion and the engaging uneven portion, and the leg is pushed down. Side desks, wagon tables, etc., whose height can be adjusted, which are locked by the engaging concave and convex portions at desired positions. 2. A side table, a wagon table or the like according to claim 1, wherein the legs on both sides are integrally formed in a U-shape.