JP4594211B2 - Table frame structure - Google Patents

Description

  The present invention relates to a table frame structure for supporting the top plate in a table including a top plate and at least a pair of left and right legs that support the top plate.

  Conventionally, a table used for a meeting or the like is provided with a pair of left and right legs that support a top board. The leg is composed of a leg main body part and a foot part that supports the leg main body part. The leg main body portion includes a top plate support portion that directly supports the top plate and a vertical leg portion having two cylindrical members that support the top plate support portion (see, for example, Patent Document 1).

  The top plate support part has a long top plate support element and a short top plate support element at the front and rear, and a convex portion and a hole are provided at the opposite ends of the two top plate support elements, respectively. Therefore, after the convex portion and the hole of one top plate support element are fitted and positioned to the hole and the convex portion of the other top plate support element, and further, both ends are fastened using a connecting member, Each top plate support element is screwed to a cylindrical member, and the top plate support element is attached to the vertical leg portion.

Japanese Patent Laid-Open No. 2002-177054 (paragraphs 0010 to 16, FIGS. 1 and 4)

  However, in Patent Document 1, since the front and rear top plate support elements are fitted by protrusions and holes provided on the contact end surfaces thereof, they are easily detached when a load is applied to the top end portion of the top plate support element. In order to prevent this, a connecting member was required. Moreover, in order to attach each top-plate support element to a vertical leg part, it is necessary to prepare two cylindrical members, and the increase in the number of parts was inevitable.

  The present invention has been made paying attention to such problems, and the support rods for supporting the top plate provided on the leg can be easily combined into one leg without interposing special parts. An object of the present invention is to provide a frame structure of a table that can be supported and is not easily bent even if the front and rear support rods receive a load from above the top plate and can stably support the top plate.

In order to solve the above-mentioned problems, the frame structure of the table according to claim 1 of the present invention is a table comprising a top plate and at least a pair of left and right legs that support the top plate, and supports the top plate. A table frame structure for supporting the table, wherein the top plate is supported by a support frame facing the front-rear direction provided on the leg, and the support frame is composed of independent front and rear support rods. When the support rods are opposed to each other in the front-rear direction, the front support rod has a protrusion extending backward from one side in the left-right direction, and the rear support rod has a protrusion extending forward from the other side in the left-right direction. Then, the two protrusions are fixed to the leg body in a state in which both the support rods are positioned by attaching the both protrusions so as not to rotate relative to each other.
According to this feature, both protrusions are attached to each other so that they cannot rotate relative to each other, and both support rods are fixed to the leg, so that both support rods always stabilize the top plate against the load on the top plate. The frame structure can be supported and is not easily bent. Furthermore, by configuring the support frame with front and rear support rods, for example, even in the case of a top plate with different front and rear widths, it is possible to flexibly cope with the selection by selecting support rods with different lengths.

A table frame structure according to a second aspect of the present invention is the table frame structure according to the first aspect, wherein at least two pins extending in the left-right direction are provided on either one of the protrusions. In addition, a fitting hole is formed in the other projection, the pin and the fitting hole are fitted, and the both projections are attached so as not to be rotatable relative to each other.
According to this feature, the protrusion of one support rod is provided with at least two pins at the top and bottom, so that the relative rotation around the pin with the other support rod is reliably prevented by fitting the pin and the fitting hole. Thus, the frame structure is difficult to bend.

The frame structure of the table according to claim 3 of the present invention is the frame structure of the table according to claim 1 or 2, wherein the protrusion includes a rear end portion of the front support rod and the rear support. It is characterized by projecting integrally from the front end of the bag.
According to this feature, since the protrusion is integrally projected from the end of the support rod, it has excellent support strength and can be easily processed by drawing or the like.

A table frame structure according to a fourth aspect of the present invention is the table frame structure according to any one of the first to third aspects, wherein a front end surface of each of the protrusions is formed by an opposing supporting rod. It is characterized in that it is positioned in contact with the distal end surface and fixed to the leg.
According to this feature, when the pin and the fitting hole are fitted, the tip end surface of each protrusion is positioned and fixed to the leg body in contact with the tip end surface of the counterpart support rod. Integration can be achieved, bending of both support rods can be further prevented, and stable support strength of the top plate can be obtained.

A table frame structure according to a fifth aspect of the present invention is the table frame structure according to any one of the first to fourth aspects, wherein the leg body extends upward from the base leg. Each of the support rods is screwed onto the column from above.
According to this feature, since both support rods are screwed onto the support columns from above, the upper portions of the support columns can be damaged using a new mounting member such as an L-shaped angle to connect the support rods to the support columns. Can be avoided and can be easily screwed without weakening the strength of the column. In addition, since the screwed portion is hidden by the top plate, the connecting portion between the support column and both support rods is shielded from the outside, so that it looks good.

The frame structure of the table according to claim 6 of the present invention is the frame structure of the table according to claim 5, wherein the through holes for screws for screwing the respective support rods to the support columns are provided. It is characterized in that it is drilled at least at two locations, that is, within the range in the left-right width direction of each support rod and a protruding portion protruding outward from the left and right side end portions.
According to this feature, by providing the screw through-holes in the protruding portions protruding from the left and right widths of the support rods, it is possible to A decrease in the support strength of the support rod can be avoided, and if necessary, the screw holes can be increased in the protruding portion to further improve the connection strength.

  Examples of the present invention will be described below.

  FIG. 1 is a perspective view showing an entire image of a table using a frame structure in an embodiment of the present invention, FIG. 2 is an exploded perspective view of the table, and FIG. 3 is a support frame constituting the frame structure. (Front and rear support rods) and a fixture, and a pair of base legs and struts constituting a leg, are enlarged main parts of the exploded perspective view. FIG. 4 (a) shows the front and rear support rod pins and fitting holes. FIG. 4B is a plan view showing a state in which the two support rods are connected by fitting, and FIG. 4B is a plan view showing a state in which the protruding portions of the both support rods are screwed to the column. ) Is a plan view showing a state in which the support rod is screwed to the support within a range in the left-right width direction of both support rods, and FIG. 5A is a partially broken plan view showing the frame structure of the table. 5 (b) is a plan view showing the overall image of the table, and FIG. 6 is a view of FIG. 5 (b). The top plate and the support rod as viewed from -A line, struts, fittings, is a schematic side view of a connection structure of connecting rod. Hereinafter, in the description of the present embodiment, the front side of the table 1 is the front side, the depth side of the table 1 is the rear side, the left hand side is the left side, the right hand when viewed in a state facing the table 1 shown in FIG. The side is described as the right side.

  As shown in FIGS. 1 and 2, the table 1 includes a top plate 2 that is mainly formed in a horizontally long rectangular shape when viewed from the top, and a left-right direction opposite to the front and rear to support the longitudinal direction of the top plate 2. Left and right support frames composed of a pair of connecting frames 19 and 20 and a pair of support rods 9 and 10 facing left and right and facing in the front-rear direction so as to support the left and right ends of the top plate 2. 8 and 8 and a pair of bases facing the front-rear direction installed on the floor surface 60 connected to the left and right support columns 3 and 3 to which the support frames 8 and 8 are connected and the lower portions of the support columns 3 and 3. The leg bodies 4 and 4 including the legs 5 and 6, the pair of attachments 40 and 41 that support the top plate on the opposite side of the middle of the left and right support rods 9 and 10, and the attachments 40 and 41 are spanned. And a connecting rod 35 extending in the left-right longitudinal direction. Conference room and library, has become available in the classroom, such as a school.

  The connection frames 19 and 20 and the support rods 9 and 10 are connected to the front ends of the left and right support rods 9 and 9 arranged on the front side, and the left and right support rods 10 and 10 arranged on the rear side. The connecting frame 20 is connected to the rear end of the connecting frame 20 to form a horizontally long rectangular frame when viewed from above. The top plate 2 is attached to the legs 4 and 4 via the frame structure and the fixtures 40 and 41 and the connecting rod 35. It is the structure supported by. In this embodiment, the connecting frames 19 and 20, the support frame 8 (support rods 9 and 10), the support columns 3 and 3, and the base legs 5 and 6 are formed of aluminum alloy, so that they are lightweight and easy to carry. Moreover, although it is excellent in strength, the present invention is not limited to this. For example, these members may be molded using a hard plastic material having strength as another material.

  As will be described later, the support rods 9 and 10 are connected and fixed in advance with bolts from the upper end of the support column 3 downward, and similarly, although not particularly shown, the base legs 5 and 6 extend upward from the lower end of the support column 3. The support rods 9 and 10 that are part of the frame structure and the legs 4 and 4 are also integrated in an E shape in a side view by being connected and fixed with bolts. Further, cover members 30 made of an ABS resin material can be attached to the left and right ends of the connecting frames 19 and 20, respectively.

  Next, the support rods 9 and 10 and the support columns 3, the fixtures 40 and 41, and the connecting rods 35 constituting the support frame 8 will be specifically described. In this embodiment, the structure for supporting the top plate 2 is symmetrical. Because of this same structure, the following description will be made centering on the support frame 8 and the legs 4 that support the left lower surface of the top plate 2.

  As shown in FIG. 3, a support column 3 is provided on the upper part of the joint between the front and rear base legs 5 and 6 so as to extend upward, and screw holes 3a and 3a are provided on the left side of the upper end 3c of the support column 3. 'Is formed vertically in the front-rear position, and screw holes 3b, 3b' are formed in the front-rear direction on the right side as well. A plurality of openings are formed on the upper surfaces 11 and 12 of the support rods 9 and 10 that are formed flat in the front-rear direction at predetermined intervals, and a plurality of reinforcements 11a and ribs 12a are formed in the openings. Is formed. A notch portion 11b cut out downward is formed on one side (right side in the present embodiment) of the rear end portion of the support rod 9, and a rear end surface of the rear end portion is formed on the notched rear end side. A protrusion 9a that protrudes integrally is formed rearward of 9e, and a pair of fitting holes 9b and 9b are provided in the vertical position on the left side surface of the protrusion 9a.

  A substantially half on the right side of the front end of the support rod 10 is formed with a notch 12b cut out downward, and on the other side (left side in this embodiment) that is not cut out, the front end face 10d of the notch front end. A protrusion 10a that protrudes integrally is formed toward the front, and a pair of pins 10b and 10b that are directed to the right are provided at upper and lower positions below the protrusion 10a. Note that the pins 10b and 10b are formed at positions where they can be fitted into the aforementioned fitting holes 9b and 9b (see FIG. 4).

  Next, in the fixture 40, bolt holes 44 penetrating downward from the flat upper surface 42 are drilled in four places on the front, rear, left and right, and the upper left side of the fixture 40 is attached to the fixture 40. A fitting projection 46 of the tool 40 is provided to project leftward, and the same type of screw through-holes 43 and 43 ′ are formed penetrating in the vertical direction at front and rear positions. The fitting protrusion 46 can be placed on the notches 11b and 12b of the support rods 9 and 10, and the length of the front and rear width of the fitting protrusion 46 is the length before and after the notches 11b and 12b. It is almost the same as the sum. The left end 36 of the connecting rod 35 is connected to the fixture 40 with a bolt or the like, and similarly, although not particularly shown, the right end 35 of the connecting rod 35 is connected to the fixture 41 (see FIG. 5).

  As shown in FIG. 4, the left side surface of the rear end portion of the support rod 9 is provided with a protruding portion 13 protruding leftward, and a screw through hole 13a is formed in the vertical direction. A screw through hole 9f having the same shape is formed in the upper surface 11 of the rear end portion on the right side of the through hole 13a (within the range in the left-right width direction of the support rod 9). A screw hole 11c is formed in the notch 11b. The left side surface of the protrusion 10a of the support rod 10 is also provided with a protruding portion 14 protruding leftward, and a screw through hole 14a is formed in the vertical direction. The front end of the screw through hole 14a at the right position is provided. The part upper surface 12 (within the range in the left-right width direction of the support rod 10) is provided with a screw through hole 10f having the same shape. A screw hole 12c is formed in the notch 12b.

  Next, a process of connecting the front and rear support rods 9 and 10 and the support column 3 will be described. First, as shown in FIG. 4A, the pin 10b of the support rod 10 is fitted into the fitting hole 9b of the support rod 9 from the left to the right. Next, as shown in FIG. 4 (b), when the pin 10b is fitted into the fitting hole 9b, the connecting position of both is positioned, and the front end face 10d of the support rod 10 is aligned with the tip face of the protrusion 9a. The rear end surface 9e of the support rod 9 is brought into contact with and engaged with the front end surface of the protrusion 10a, and the notches 11b and 12b are also connected in the front-rear direction. The upper surface 11 of the support rod 9 and the upper surface 12 of the support rod 10 are aligned with each other, and the front and rear support rods 9 and 10 are integrated as a support frame 8 facing in the front-rear direction.

  Therefore, the screw through holes 13a and the screw through holes 14a of the support rods 9 and 10 are placed on the upper end 3c of the support column 3 at the same positions as the screw holes 3a and 3a ', and a pair of bolts is mounted. 54 and 54 are screwed into the screw holes 3a and 3a 'via the corresponding screw through holes 13a and 14a, and the projecting portions 13 and 14 are fastened to the column 3. Similarly, the screw through-holes 9f and 10f on the upper surfaces 11 and 12 are also screwed into the screw holes 3b and 3b ′ with a pair of bolts 55 and 55 and fastened to the support column 3, so that the support rod 9 and the support rod 10 are Each is connected at two places on the left and right of the column 3.

  As described above, the protrusions 13 and 14 projecting from the left and right widths of the support rods 9 and 10 are also provided with screw through holes 13a and 14a. Rather than providing only the through holes 9f and 10f for use, it is possible to avoid a decrease in the support strength of the support rods 9 and 10, and if necessary, the projecting portions 13 and 14 can be provided with new screw holes. It is possible to further improve the connection strength.

  Furthermore, since both the support rods 9 and 10 are directly screwed to the support column 3 only from above with bolts 54 and 55, a new L-shaped angle or the like is provided for connecting the support support rods 9 and 10 and the support column 3. It is possible to avoid damaging the upper portion of the column 3 using a simple mounting member, and it can be easily screwed without weakening the column strength.

  Since the support rods 9 and 10 are connected to each other by fitting the fitting holes 9b and the pins 10b at the two upper and lower positions, one support rod 10 provided with the pins 10b and the fitting hole 9b are formed. Further, since the relative rotation around the pin with the other support rod 9 is prevented, both the support rods 10 and 9 are not easily bent to stably support the top plate 2 even against the load of the top plate 2. The frame structure is less likely to shake from side to side, creating a stronger connection.

  Moreover, since the protrusion 9a and the protrusion 10a are formed integrally protruding from the rear end portion of the support rod 9 and the front end portion of the support rod 10, they have excellent support strength and can be easily processed by pulling out. And since the front end surface of each protrusion is positioned in contact with the front end surface of the opposing counterpart support rod and can be fixed to the leg, the support rods can be integrated. Furthermore, since the support frame 8 is composed of the front and rear support rods 9 and 10, for example, even when the top plate has a different front-rear width, it can be flexibly handled by selecting the support rods having different lengths. An ABS resin lid 15 that can be shielded can be attached to the upper portions of the protrusions 13 and 14, and the upper portion of the bolt 54 can be shielded from the outside.

  Next, as shown in FIG. 5A, the front connecting frame 19 is fastened to the left and right front end portions 9d, 9d of the support rods 9, 9 by a pair of left and right bolts 50, 50, respectively. The rear connecting frame 20 is fastened to the left and right rear end portions 10e and 10e of the flanges 10 and 10 by a pair of left and right bolts 50 and 50, respectively, so that a rectangular frame that supports the top plate 2 is formed.

  In order to attach the fixtures 40 and 41 having the connecting rods 35 attached with bolts or the like, the notches 11b located at the front and rear center of the left and right support rods 9 and 10 from above the front and rear and right and left support rods 9 and 10. 12b, the fitting protrusions 46, 46 of the fixtures 40, 41 are fitted and temporarily fixed. At this time, the screw holes 11c and 12c formed in the notches 11b and 12b and the screw through holes 43 and 43 'formed before and after the fitting protrusions 46 and 46 are overlapped at the vertical position.

  Then, the bolts 52, 52 are inserted from above into the screw through holes 43, 43 ′ formed before and after the fitting protrusions 46, 46, and screwed into the screw holes 11c, 12c, thereby attaching the fixture. 40 and 41 are connected to the upper part of the connecting part of the front and rear support rods 9 and 10, respectively. By this attachment, the fixtures 40 and 41 and the connecting rod 35 also become part of the frame structure composed of the left and right support rods 9 and 10 and the front and rear connecting frames 19 and 20, and the connecting frames 19, 20, The upper surfaces of the support rods 9, 10, the fixtures 40, 41, and the connecting rod 35 are all configured to have the same height.

  That is, as shown in FIGS. 5B and 6, the upper surfaces of the support rods 9 and 10 and the connection frames 19 and 20, and the fixtures 40 and 41 and the connection rod 35 are flush with each other. When the top plate 2 is placed on the member, the appearance from the outside is good without causing a gap between the top plate 2 and the lower surface of the top plate 2 is stably supported on the upper surface of these members, and the backlash is also reduced. Don't make it happen.

  Next, after the top plate 2 is placed on the upper surfaces of the support rods 9 and 10 and the connection frames 19 and 20 and the fixtures 40 and 41 and the connection rod 35, the left and right ends of the connection frames 19 and 20 and if necessary. For example, the bolt 51 is passed through the through-holes 23a, 23a formed in the middle portion thereof from the lower side to the upper side of the through-holes 23a, 23a so as to be formed on the lower surface of the top plate 2 (not shown). The top plate 2 is fixed by screwing into the bolt holes.

  Further, as shown in FIG. 6, the bolts 53 are penetrated upward from below the left and right attachments 40, 41 toward the bolt holes 44, and the bolt holes 2 a are formed in advance on the lower surface of the top plate 2. The top plate 2 is fixed by screwing. If necessary, the top plate 2 can be firmly fixed to the frame frame by fixing with bolts from below the support rods 9 and 10. In this way, the top plate 2 is fixed to the fixtures 40 and 41 protruding from the left and right support rods 9 and 10 on the respective facing surfaces, so that the bending of the top and bottom intermediate positions of the top plate 2 is ensured. Is prevented. In particular, when the front and rear dimensions of the top plate 2 are large, if the fixtures 40 and 41 are provided and fastened at the front and rear intermediate positions of the support rods 9 and 10, the bending at the center of the top plate 2 is It is more effectively prevented together with the connecting rod 35.

  Further, the head of the bolt 54 used for fastening the left side of the upper end 3 c of the column 3 and the protruding portion 13 is shielded by being covered with the lid member 15, and the right side of the upper end 3 c of the column 3 and the support rod 9. 10 is shielded by the top plate 2, and the head of the bolt 52 used for fastening the support rods 9, 10 and the fixture 40 is also shielded by the top plate 2. The head of the bolt 53 used for fastening the fixture 40 and the top plate 2 is shielded by being arranged inside the fixture 40. In this way, the bolt connection portion of each member is shielded from the outside, and the appearance of the table 1 from the outside is improved (see FIG. 1).

  As described above, in the present embodiment, the support rods 9 and 10 are directly attached to the support pillar 3 constituting a part of the leg body 4 with only the bolts 54 and 55 without interposing special parts. The frame structure of the table 1 is such that the bolts 54 and 55 can be attached to the support column 3 from above the support rods 9 and 10.

  Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and modifications and additions within the scope of the present invention are included in the present invention. For example, in the above embodiment, since the protrusions 9a and 10a are integrally projected from the support rods 9 and 10, it is preferable that the respective support rods 9 and 10 can be integrally molded by drawing or the like. However, the protrusions 9a and 10a may be separately provided on the rear end portion 9e and the front end portion 10d of the support rod 9, and if they are welded by heat (laser) welding or the like, it is almost the same as the integral molding. No support strength can be obtained.

  Moreover, in the said Example, although the number of the pins 10b of the support rod 10 was made into the upper and lower two pieces, it is preferable from the relative rotation around a pin being reliably prevented, but even if there are two or more pins 10b, Needless to say, the present invention is not limited to this, and any other configuration may be used as long as the protrusions 9a and 10a can be attached to each other so as not to rotate relative to each other. For example, the shape of the pin is a polygonal shape. By doing so, even with a single pin, relative rotation around the pin can be prevented.

It is a perspective view which shows the whole image of the table using the frame structure in the Example of this invention. It is a disassembled assembly perspective view of a table. It is a principal part expansion disassembled perspective view which shows the support frame (front-and-rear support rod) and fixture which comprise a frame structure, and a pair of base leg and support | pillar which comprise a leg. (A) is a top view which shows the connection process of both the support rods by the fitting of the pin of the front and back support rods and a fitting hole, (b) is screwing the protrusion part of both the support rods connected to the support | pillar. It is a top view which shows the state to do, (c) is a top view which shows the state screwed with a support | pillar within the range of the left-right width direction of both support rods further. (A) is a partially broken plan view which shows the frame structure of a table, (b) is a top view which shows the whole image of a table. FIG. 6 is a schematic side view showing a connection structure of the top plate, the support rod, the support column, the fixture, and the connection rod viewed from the arrow AA line in FIG.

Explanation of symbols

1 Table 2 Top plate 2a Bolt hole 2b Lower surface 3 Post (Part of leg)
3a, 3a 'Screw hole 3b, 3b' Screw hole 3c Upper end 4 Legs 5, 6 Base leg (part of leg)
8 Support frames 9, 10 Support rods around (support frame)
9a, 10a Projection 9b Fitting hole 10b Pin 9d, 10d Front end portion 9e, 10e Rear end portion 9f, 10f Screw through hole 11, 12 Upper surface 11a, 12a Rib 11b, 12b Notch portion 11c, 12c Screw hole 13, 14 Projection Portions 13a, 14a Screw through hole 15 Lid member 19, 20 Connecting frame 23a Through hole 24 Lower surface 30 Cover member 35 Connecting rod 35a Upper surface 36, 37 End portion 40, 41 Mounting device 42 Upper surface 43, 43 'Screw through hole 44 Bolt hole 46 fitting protrusion (mounting part)
50, 51, 52 Bolt 53, 54, 55 Bolt 59 Hexagon wrench 60 Floor

Claims (6)

In a table composed of a top plate and at least a pair of left and right legs that support the top plate, a table frame structure for supporting the top plate,
The top plate is supported by a support frame that is provided on the leg body and faces in the front-rear direction. The support frame is composed of independent front and rear support rods, and the two support rods face each other in the front-rear direction. The front support rod has a protrusion extending backward from one side in the left-right direction, and the rear support rod has a protrusion extending forward from the other side in the left-right direction, and the two protrusions cannot rotate relative to each other. A table frame structure characterized in that the frame is fixed to the leg body in a state in which both the support rods are positioned by being attached to the table.   One of the two protrusions is provided with at least two vertically facing pins in the left and right direction, a fitting hole is formed in the other protrusion, the pin and the fitting hole are fitted, and the two protrusions are connected to each other. The frame structure of the table of Claim 1 attached so that relative rotation was impossible.   The frame structure of the table according to claim 1 or 2, wherein the protrusion protrudes integrally from a rear end portion of the front support rod and a front end portion of the rear support rod.   The frame structure of the table according to any one of claims 1 to 3, wherein the front end surface of each of the protrusions is positioned and fixed to the leg body in a state in which the front end surface of the opposing support rod is in contact.   The said leg body consists of a base leg and the support | pillar extended upwards from this base leg, and each of the said both support rods was screwed on the said support | pillar from the top. Table frame structure.   Two screw through-holes for screwing the support rods to the support columns are provided in a range in the left-right width direction of the support rods and projecting portions projecting outward from the left and right side end portions. The frame structure of the table according to claim 5, wherein the frame structure is at least perforated.

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