JPH0744172Y2 - Reversible table - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reversible table which can use both top and bottom surfaces of a top plate and can be folded flat. In the present specification, the table is a concept including general tables such as desks for work or learning, dining tables, work tables, counters, and the like having the same configuration as the table.

[0002]

2. Description of the Related Art As a conventional table that can be used on both sides of a top plate, there is a table in which one side of a kotatsu plate is a synthetic resin or a wooden decorative plate and the other side is a lashing plate used for a game. This is one in which a base for receiving a top plate and legs are integrated, and a separate top plate is simply placed thereon.
There is also known a conference table in which two left and right legs are integrally formed on the back surface of the top plate and hinged so that the two legs can be folded at right angles. This has the advantage that it does not take up storage space, since all the legs can be folded underneath the top plate, so that the tables can be stacked on top of each other.

Further, the present applicant has proposed that the upper ends of both legs of the X leg which are already foldably connected by a hinge in the middle portion are
A foldable counter has been proposed, which is rotatably connected to the lower surface of the top plate and has a second hinge between the hinge and the upper end of the intermediate portion of one leg (Japanese Utility Model Application 1-. 33067). This product has both legs that can be folded to the same side with respect to the top plate, and since the folded legs can stand on their own, it can be used with the top plate standing upright.

On the other hand, the applicant of the present invention, in the field of folding pipe chairs, has a backrest column which also serves as a front leg and a rear leg as foldable X legs, and the upper ends of the rear legs can be freely rotated at the front part of the seat portion. It has been proposed that the rear part of the seat part is slidably and rotatably connected to the backrest column. This was further developed so that all the legs were placed on both sides of the seat, the rear legs could pass between the backrest columns, and the seat could pass between the rear legs. A reversible chair is proposed in which both the upper and lower sides of the seat (and the backrest) can be used (see Japanese Patent Application No. 1-95101).

[0005]

The above-mentioned kotatsu plate for double-sided use is separated from the main body, and since the main body is generally not folded, it takes a lot of time to fold and unfold it. It is inconvenient to store. Also, the other folding tables mentioned above cannot be used on both sides. Further, the reversible chair uses a backrest column as a guide, but the table does not have such a column extending to the top,
The folding and reversing mechanism in such a reversible chair cannot be diverted to the table as it is.

It is a technical object of the present invention to provide a folding table in which the mechanism portion of the reversible chair is devised and developed so that it can be used as a table, and which allows the use of both sides of a top plate, which has never been seen before. To do.

[0007]

SUMMARY OF THE INVENTION A reversible table of the present invention comprises a top plate and a pair of front and left end faces of the top plate which are rotatably mounted around a common axis extending in the left-right direction. The inner leg of the, and the outer side of the pair of inner legs, is disposed through a space through which the inner leg can pass,
On the rear side of the left and right end surfaces of the top plate, the upper ends are attached so as to be rotatable around axes extending in the left-right direction, and a common axis around which the middle portions of the inner legs extend horizontally. A pair of outer legs rotatably connected to the top plate, and a portion between the attachment position of the outer leg to the top plate and the connection position to the inner leg is attached to the top plate of the outer leg. It is characterized in that it is configured to be extendable / contractible so as to have an extension / contraction length equal to or greater than the distance between the position and the mounting position of the inner leg on the top plate.
The front, rear, left and right in the claims merely indicate the positional relationship between the inner leg and the outer leg, and have no relation to the position where the user sits and the vertical and horizontal directions (long side and short side) of the top plate.

The outer leg is made of a pipe having substantially the same length as the inner leg, and the outer leg body is accommodated in the outer leg body so as to extend from the upper end opening of the outer leg body and has a long upper end. It can be composed of a slide member rotatably attached to the end surface of the top plate by the rotation support portion, and in this case, the extendable length of the slide member is the expansion / contraction length. When the intermediate portion of the outer leg body and the intermediate portion of the inner leg are rotatably connected by a pin penetrating both,
A slit is formed in the lower part of the slide member to avoid interference with the pin.

A stopper for supporting the slide member at the position extended from the outer leg can be constructed by screwing a screw engaging with the upper end of the slit of the slide member to the outer leg body. Further, it is preferable that the lower portions of the pair of left and right inner legs are connected to each other by at least one cross member. Further, it is preferable that the upper end of the slide member and / or the upper end of the inner leg is attached to the left and right ends of the top plate by mounting brackets having a U-shaped cross section sandwiching the upper and lower surfaces of the top plate. One bracket can be attached to each of the left and right sides of the bracket to attach both the outer leg and the inner leg. Also, the vicinity of the lower ends of the outer leg and the inner leg may be bent to the opposite side to some extent.

[0010]

In the use state of the table, the inner leg and the outer leg are opened in an X shape with the connecting portion as an intersection, and the top plate is supported on the upper end of them by the rotation supporting member. When the rear portion of the top plate is lifted from that state, the outer legs extend and the top plate rotates about the mounting portion of the inner legs. As a result, left and right X
The legs are closed and the table is folded flat. When the top plate is further rotated in the same direction, the intersection of the X-shaped legs is reversed and the top plate is inverted.

In the table of claim 2, the appearance is preferable because the slide member is hidden inside the outer leg body when opened. In the table of claim 3, since the interference between the pin and the slide member is avoided by the slit, a slide member having a long guide portion can be adopted. The table of claim 4 can securely hold the folded state by engaging the screw with the upper end of the slit. In the table according to claim 5, the opening and closing of the left and right X legs are synchronized by the cross member. In the table of claim 6, the top plate can be firmly held by the bracket, and in the table of claim 7, the top plate can be further firmly held. According to the table of claim 8, the height of the tabletop can be changed depending on the direction in which the tabletop is inverted.
Moreover, the table can be stood vertically when folded.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a reversible table (hereinafter, simply referred to as a table) of the present invention will be described below with reference to the drawings. 1 is a perspective view showing an embodiment of the table of the present invention, FIG. 2a is a perspective view of a main part of the table of FIG. 1 in the middle of folding, and FIG. 2b is a perspective view of a slide member in FIG. 2a. FIG. 4 is a perspective view and a cross-sectional view of an essential part showing the folded state of the table of FIG. 1, and FIGS. 5, 6 and 7 are other embodiments of the table of the present invention in a used state (deployed state). 8 is a plan view, a front view and a side view, FIG. 8 and FIG. 9 are partial cross-sectional plan views and partial cross-sectional front views of the rotary support portion (A portion) of the table of FIG. 5, and FIG. 8 is a disassembled perspective view showing the supporting portion of FIG. 8, FIGS. 11a and 11b are side views showing the folded state of the table of FIG. 4 and an essential part front view, and FIGS. 12a to 12e show the table of FIG. Foldable Perspective view by inverting the top plate showing the procedure to be able to use the back side, FIG. 13 is a fragmentary cross-sectional view showing still another embodiment of the present invention the table.

A table 1A shown in FIG. 1 has a rectangular top plate 2
And left and right X legs 3 and 4 that support the top plate 2. Each of the left and right X legs 3 and 4 has an inner leg 6 whose upper end is rotatably attached to a front end of the top plate 2 by a rotation support part 5, and an outer leg of the inner leg 6 to which the top plate is attached. A space (S in FIG. 3) through which the inner leg 6 can pass is opened between the side end surface of the top plate 2 and the side end surface of the top plate 2, and the top end of the top plate 2 is rotatable by a rotation support portion 7 having a long upper end. The outer leg 8 is attached to the. The middle portion of the outer leg 8 is rotatably connected to the middle portion of the inner leg 6 by a rivet pin 9. As shown in FIG. 4, the rivet pin 9 preferably has a spacer 9a between the inner leg 6 and the outer leg 8 which is integral with or independent of the pin.

The lower parts of the left and right inner legs 7 are firmly connected to each other by two lateral members 10. Since the cross member 10 has a function of synchronizing the opening and closing movements of the left and right X legs 3 and 4, it is preferable to provide at least one cross member. The left and right inner legs 7 and the transverse members 11 at the lower ends thereof may be formed by a single pipe bent in a U-shape, as in the imaginary line in FIG. 1 or the table 1B shown in FIGS. In that case, there is an advantage that the manufacturing becomes easy. If the lengths of the two legs may be slightly different, that is, the front and rear symmetry may be broken, the lower portion or the lower end of the outer leg 8 may be connected by a cross member.

As shown in detail in FIGS. 2, 3 and 4, the outer leg 8 has an outer leg body (hereinafter referred to as a body) 12 formed of straight pipes and a body 1 thereof.
The slide member 13 is slidably accommodated in the inside of the main body 12, and is slidable from the upper end of the main body 12. The middle part of the body 12 is connected to the middle part of the inner leg 6,
Is connected to the side edge of the top plate 2. The slide member 13 is composed of a pipe that is somewhat thinner than the main body 12,
The long rotation support portion 7 is laterally provided on the upper end thereof.

Further, the length of the slide member 13 is set to a length which is sufficiently left in the main body 12 even when it extends from the main body 12 by the distance between the rotation supporting portions 5 and 7, as shown in FIG. Therefore, a slit 14 is formed in the lower part of the slide member 13 to avoid interference with the rivet pin 9 (see FIG. 2b). The lower end of the slit 14 is released by the lower end of the slide member 13, and the upper end is closed.
Further, as shown in FIG. 4, a through hole 16 into which the screw 15 is inserted is formed outside the upper portion of the main body 12, and a nut 17 is fixed to the outside by welding or the like. The screw 15 is X
When the leg 4 is folded, it engages with the upper end of the slit 14 to prevent the slide member 13 from descending, and acts as a stopper that holds the X leg in the folded state.

Contrary to the above, when the X legs 3 and 4 are opened, the upper end of the slit 14 contacts the rivet pin 9 so that the slide member 13 does not descend further, that is, the X leg moves. As a result, it acts as a stopper for preventing the opening. The rotation support portion 7 at the upper end of the slide member 13 may be brought into contact with the upper end of the pipe main body 12 to function as a stopper.

5 to 7 show a plan view, a front view and a side view of a table 1B which is substantially the same as the table 1A. As shown in FIGS. 5 to 7, the left X leg 3 and the right X leg of the table 1B are shown.
The legs 4 are symmetrically arranged, and the inner legs 6 and the outer legs 8 when opened are parallel to each other in the same direction, that is, the former is backward and the latter is downward (see FIG. 1). ). Further, as is apparent from FIG. 5, the rotation support portions 5 for the inner leg, the long rotation support portion 7 for the outer leg, and the rotation centers P1, P2, and P3 of the rivet pin 9 extend in the left-right direction of the top plate 2, respectively. And are parallel to each other. Moreover, the rotation centers corresponding to the left and right of the table 1 are on the same straight line and have a common axis.
Further, as shown in FIG. 7, the inner leg 6 and the outer leg 8 have the same length, and the distance L1 between the rotation supporting portions 5 and 7 and the rivet pin 9 is
The L2s are also the same, that is, the front and rear are substantially symmetrical. In addition, in the tables 1A and 1B shown in FIGS. 1 and 5, the inner leg 7 and the slide member 13 are made of round pipes in addition to the outer leg 8. A molded member, an extruded product, or the like can also be used.

The top plate 2 has different materials or decorative patterns on the front and back. For example, one side can be used for a coffee table or indoor interior made of a solid wood layer, and the other side can be used for a work table made of plywood or a particle board layer. It is also possible to put lacha or cork on one side, or glass on one side and wooden or steel plate on the other side.

As shown in FIGS. 8 to 10, the rotation supporting portions 5 and 7 are mounted on the left and right side edges of the top plate 2 with a front-rear distance and a bracket 18 having a U-shaped cross section.
And a cylindrical portion 19 laterally fixed to the upper end of the slide member 13, a collar 20 and a connecting bolt 21 that rotatably connect the both. U-shaped bracket 1
As shown in FIG. 9, 8 is mounted so as to sandwich the top plate 2 from above and below, and is fixed to the top plate 2 by a cylindrical fixing nut 22 and a fixing bolt 23 which are inserted into holes penetrating the top plate 2. . The top plate 2 is preferably provided with a step portion 24 which is lowered so that the surface of the bracket 18 does not protrude from the surface of the top plate 2.

A cylindrical connecting nut 25 is fixed to the side surface of the bracket 18 by welding or the like, and the connecting nut 25 fits into a recess 26 formed at one end of the tubular portion 19 and slides. It supports the member 13. At the other end of the slide member 13, a recess 27 for accommodating the head of the connecting bolt 21 is formed. The collar 20 has a tubular portion 19 and a connecting nut 25 even if the connecting bolt 21 is tightened.
As a spacer to allow rotation with the
It acts as a bush that improves the sliding between 9 and the connecting bolt 21.

In the case of the rotation support portion 7 for the outer leg, the tubular portion 19 is elongated so that the outer leg 8 does not interfere with the inner leg 6 when the X leg 4 is folded. As a result, an appropriate space S is provided between the outer legs 8, particularly the main body 12 and the side edge of the top plate 2, and the inner legs 6 can smoothly pass between the outer legs 8. The rotation support portion 5 of the inner leg 6 is
As shown in FIG. 4, it is substantially the same as the rotation support portion 7 for the outer leg except that the length is different. The tubular portion 19 is the inner leg 6
It is laterally fixed to the upper end of the pipe that constitutes it by welding or the like. In the case of the inner leg rotation support portion 5, on the assumption that the top plate 2 can pass between the left and right inner legs 6,
The tubular portion 19 is preferably as short as possible. As a result, the space S can be made smaller and the tubular portion 19 for the outer leg can be made shorter, so that the load on the cantilever structure can be reduced.

Tables 1A and 1 configured as described above
B is the top plate 2 when the X legs 3 and 4 are opened as shown in FIG.
Is lifted in the direction of arrow N, the slide member 13 extends from the main body 12 and the X leg begins to close, and the X leg closes as shown in FIGS. 3 and 11 via the state in the middle of FIG. Then, at that time, the top plate 2 is housed inside the inner leg 6.
This state is the folded state. 3-4 in this state
When the stopper screw 15 is screwed in, the screw 15 enters the slit 14 of the slide member 13, engages with the upper end thereof, and the folded state is safely maintained. The sequence of these steps is shown more clearly in FIGS.

That is, FIG. 12a shows a state in which one surface (indicated by A) of the top plate 2 faces upward, and the folded state of FIG. 12c is reached through the state of FIG. 12b in the middle. Then, the screw 15 is loosened from the folded state and the upper end of the top plate 2 is further rotated in the direction of the arrow N.
As it passes through the space, it falls to the opposite side. At the same time, the inner leg 6 passes through between the top plate 2 and the outer leg 8, and as shown in FIG.
As shown in, the outer leg 8 and the inner leg 6 intersect with each other in the opposite arrangement. At that time, the back surface of the top plate 2 (indicated by B) is tilted upward.

Then, again the slit 1 of the slide member 13
When the upper end of 4 is engaged with the rivet pin 9, the top plate 2 is completely facing upward, that is, the back surface (B) is in use. In this state, the slide member 13 does not come out of the main body 12 by the weight of the top plate 2, but if necessary, the screw 15 is tightened and its tip is pressed against the surface of the slide member 13 so that The sliding may be locked. At that time, since the portion of the slide member 13 above the upper end of the slit 14 faces the tip of the screw 15, the screw 15 can be locked. Further, in some cases, if the table 2 is locked in the middle of FIG. 12b or FIG. 12d, the top plate 2 can be tilted or tilted from the upright position. For example, it can be used as a bulletin board or a partition plate. You can also In that case, it is preferable to provide the screw 15 with a lock nut. Also, an appropriate number of engaging holes may be provided on the surface of the slide member 13 (the portion above the slit 14) so that the slide member 13 can be adjusted in steps. The lower end of the inner leg 6 and the lower end of the outer leg 8 are connected to the imaginary lines Z1 and Z2 in FIG.
As shown in Fig. 11a, if you bend the table as shown in Fig. 11a or give it a certain width, the bottom end has a front-back width even when folded. Can be set. Further, the height of the top plate 2 can be changed by reversing the top plate 2 by bending the vicinity of the lower ends of the inner leg 6 and the outer leg 8 like the imaginary lines Z1 and Z2.

FIG. 13 shows another embodiment of the present invention, such as the rotation support part and the connecting part between the inner leg and the outer leg.
In the tables 1A and 1B shown in FIGS. 1 to 7 and the like, the inner leg bracket 18 and the outer leg bracket 18 are separated from each other, but in the present embodiment, they are integrally connected and lengthened. The bracket 27 is adopted. Therefore, even before the left and right X-legs 3 and 4 are attached to the top plate 2, the distance between the rotation support portions 5 and 7 above the X-legs 3 and 4 can be accurately set, and the strength can be improved. Further, the columnar connecting nut 25a for the outer leg is the connecting nut 25 for the inner leg.
It is made longer than b by the amount of the shift between the outer leg 8 and the inner leg 6. Therefore, the tubular portion 19 for the outer leg and the tubular portion 19 provided at the upper end of the inner leg can be made common, and further the left and right inner legs 6 and the outer legs 8 can be made common. Color 20
The connection bolts 21 can be shared.

Further, in the embodiment of FIG. 13, since the thickness of each connecting nut 25a, 25b is made approximately the same as that of the tubular portion 19, there is an advantage that the cantilever structure has high strength. Instead of the connecting nuts 25a and 25b, a pin having a screw or groove at the tip may be fixed to the bracket 27, and a nut or a retaining ring may be attached to the tip of the pin penetrating the tubular portion 19 to prevent the pin from coming off.

In any of the above-mentioned embodiments, the outer leg is composed of a pipe-shaped main body and a slide member housed therein, but as shown in FIG. 13, the outer leg 8 is formed of one pipe. It can also be connected to the inner leg 6 so as to be axially slidable and rotatable. In the case of the embodiment shown in FIG. 13, a cylindrical guide 28 is rotatably provided in the middle portion of the inner leg 6, and the outer leg 8 is slidably passed through the cylindrical guide 28. By operating this as well as in FIG. 12, the top plate 2 can be folded and both surfaces thereof can be used. In that case, it is preferable to provide a screw for stopper on the cylindrical guide 28. Further, instead of the cylindrical guide 28, a groove or slit is provided inside the outer leg (the side facing the top plate), and a round pin protruding from the inner leg is slidably and rotatably fitted in the groove or slit. An equivalent mechanism can be configured by combining them (not shown). The slide rotation structure can be configured by arranging the outer leg and the inner leg in reverse, for example, by providing the tubular guide 28 on the outer leg side or providing the groove on the inner leg.

[0029]

Since the table of the present invention can be folded, the volume for storing and packing can be reduced. Furthermore, since the top plate can be used by reversing it, it is possible to use different patterns or materials on both sides of the top plate and to use both sides according to the purpose of use.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a table of the present invention.

2a is a perspective view of a main part of the table of FIG. 1 in the middle of folding, and FIG. 2b is a perspective view of a slide member in FIG. 2a.

FIG. 3 is a perspective view of a main part of the table of FIG. 1 in a folded state.

FIG. 4 is a cross-sectional view of essential parts showing a state where the table in FIG. 1 is folded.

FIG. 5 is a plan view showing another embodiment of the table of the present invention in a use state (deployed state).

FIG. 6 is a front view of the table of FIG.

FIG. 7 is a side view of the table of FIG.

8 is a partial cross-sectional plan view of a rotation support portion (J portion) of the table of FIG.

9 is a partial cross-sectional front view of a rotation support portion (J portion) of the table of FIG.

FIG. 10 is an exploded perspective view showing the rotation support portion of FIGS. 8 and 9.

11a and 11b are a side view and a front view of a main part showing a folded state of the table of FIG. 4, respectively.

FIG. 12 is a process explanatory view showing a procedure of folding the table of FIG. 5 from the use state and further reversing the top plate so that the back surface can be used. It is a process explanatory view showing a procedure.

FIG. 13 is a cross-sectional view of an essential part showing still another embodiment of the table of the present invention.

[Explanation of symbols]

 1A table 1B table 2 Top plate 5 Rotation support part 6 Inner leg 7 Rotation support part 8 Outer leg 9 Rivet pin 12 Main body 13 Sliding member

Claims (8)

[Scope of utility model registration request] 1. A top plate, a pair of inner legs attached to the front sides of the left and right end surfaces of the top plate so as to be rotatable around a common axis line whose upper ends extend in the left-right direction, and a pair of the inner legs. It is arranged on the outside through a space that allows the inner legs to pass through, and is attached to the rear sides of the left and right end surfaces of the top plate so that the upper ends thereof are rotatable around axes extending in the left-right direction, and the middle of the inner legs. A pair of outer legs that are rotatably connected about a common axis extending in the left and right with respect to each of the parts, and the attachment position of the outer legs to the top plate and the connection to the inner legs. A reversible table that is configured to be extendable and retractable such that a portion between the position and the position has an extension / contraction length that is equal to or greater than a distance between an attachment position of the outer leg to the top plate and an attachment position of the inner leg to the top plate. 2. An outer leg main body made of a pipe having substantially the same length as the inner leg, and the outer leg main body accommodated in the outer leg main body so as to extend from an upper end opening of the outer leg main body, and the upper end. 2. The reversible table according to claim 1, wherein the slide member is rotatably attached to the end surface of the top plate by a long rotation support portion, and the extendable length of the slide member is the extension length. . 3. The intermediate portion of the outer leg main body and the intermediate portion of the inner leg are rotatably connected by a pin penetrating the both, and
The reversible table according to claim 2, wherein a slit is formed in a lower portion of the slide member to avoid interference with the pin. 4. The reversible table according to claim 3, wherein the outer leg is provided with a screw that engages with an upper end of a slit of the slide member and supports the slide member at a position extended from the outer leg. . 5. The lower parts of the pair of left and right inner legs are connected to each other by at least one cross member.
The reversible table according to any one of 3 and 4. 6. An upper end of the outer leg and / or an upper end of the inner leg are attached to the top plate via mounting brackets having a U-shaped cross section sandwiching the upper and lower surfaces of the top plate.
The reversible table according to any one of 2, 3, 4 and 5. 7. The reversible table according to claim 6, wherein the upper ends of the outer leg and the inner leg on the same side of the top plate are attached to the ends of the top plate by one long bracket. 8. The reversible table according to claim 1, wherein the outer legs and the inner legs are bent to the opposite sides in the vicinity of the lower ends thereof.