JP3107112U - Improved structure of table legs - Google Patents

Abstract

An improved structure of a table leg that reduces the use of connecting screws used in the table leg and ensures the stability of the table.
A pair of front and rear lateral beams 60 and left and right lateral beams 70 disposed in a rectangular shape on the back surface of a table top plate and a leg 50 are secured by a single connecting screw 80, respectively. The table 50 has a modified leg structure, and the leg 50 is formed of a hollow tube, and the adjacent two for fitting the ends of the front and rear lateral beams 60 and the left and right lateral beams 70 respectively. Provided with two fitting portions 51, a base portion 52 is fixed in the tube near the upper end portion of the tube body, and a female screw hole into which a connecting screw 80 is screwed is formed at the center of the base portion 52. The rear transverse beam 60 and the left and right lateral beams 70 have one end portion and the other end portion thereof having connection concave portions 61 and 71 that open upward and connection concave portions 61 and 71 that open downward, respectively. A through hole 72 through which the connecting screw 80 passes is provided in the bottom plate portion and the top plate portion.
[Selection] Figure 5

Description

  The present invention relates to an improved structure for a table leg, and more particularly to an improved structure for a table leg that is applied to the table leg, reduces the use of connecting screws, and ensures the stability of the table.

FIG. 1 is a conventionally known three-dimensional exploded view, which is an intersection of a pair of left and right lateral beams 10 and front and rear lateral beams 20 which are corners of each leg arranged on the back surface of the table top. Each is provided with a leg 30 and is fixed by four screws 40.
The left and right horizontal beams 10 are rectangular pipes, and two bolt passage holes 11 are formed on the outer side of one end thereof, and two through holes 12 are provided on the inner side of the passage holes 11. A connecting hole 13 is formed in the connecting hole 13 and an engaging fitting groove 14 for engaging is provided on the side of the connecting hole 13.
The front and rear transverse beams 20 are rectangular pipes, two connecting holes 21 are provided at the end portions, and engaging fitting grooves 22 are provided slightly below the rear. The leg 30 is formed of a prismatic tube, and the fitting part 31 is provided adjacent to the inner part of the upper end part, and the fitting part 31 further has a through hole 32 penetrating the screw 40 on the inner side. Have.

  FIG. 2 is a conventionally known three-dimensional assembly drawing, and referring to FIG. Thereafter, the screw 40 passes through the through hole 12 and the connecting hole 21 through the through holes 11 of the left and right horizontal beams 10 and is fixedly connected to each other. The engagement fitting grooves 14 and 22 are inserted into the bottom end portion of the fitting portion 31, and finally, the two screws 40 are connected to the through-hole 32 and the connection by the legs 30. The holes 13 are connected and fixed to each other.

  FIG. 4 is a view showing a conventionally known use state. A pair of left and right lateral beams 10, a pair of front and rear lateral beams 20, four legs 30, and necessary screws 40 are combined to form a table leg. Constitute.

  However, since the known structure as described above uses a large amount of screws 40, the assembly is complicated and the assembly is performed by a simple butting method, so that the stability is inferior.

  The present invention relates to an improved structure of a table leg, and provides an improved structure of a table leg that reduces the use of connecting screws used in the table leg and ensures the stability of the table. Objective.

  According to the first aspect of the present invention, a pair of front and rear lateral beams and left and right lateral beams, which are arranged in a rectangular shape on the back surface of the table top plate, and the front and rear lateral beams and left and right Each corner of the crossing portion of the cross beam has a table leg modification structure in which the legs are fixed by a single connecting screw, and the legs are formed of hollow tubes. The inner side of the upper end of the tubular body has two adjacent fitting parts for fitting the ends of the front, rear lateral beam and left and right lateral beams, respectively, and in the vicinity of the upper end of the tubular body A base portion is fixed in the tube, and a female screw hole into which the connecting screw is screwed is formed at the center of the base portion, and one end portion and the other end portion of the front, rear transverse beam, left, and right transverse beam. Each have a connecting recess that opens upward and a connecting recess that opens downward, and a bottom plate portion and an upper plate of each connecting recess. Is provided with a through-hole through which the connection screw passes, and an engagement fitting groove formed by cutting the front and rear lateral beams and the bottom and side plates of the left and right lateral beams in close proximity to the respective connection recesses. The respective corners that are the intersections of the front and rear lateral beams and the left and right lateral beams are connected to each other through the respective connecting recesses, and the connecting portions are respectively connected to the two fitting portions at the upper end of the leg. The front and rear lateral beams and the left and right lateral beams are engaged with the engaging groove for engagement with the bottom end of the fitting portion, and the front and rear lateral beams and the upper plate of the left and right lateral beams are engaged. The lower end portion of the connecting screw penetrated through the through hole formed in the portion is screwed to the base portion, thereby connecting and fixing the ends of the front and rear lateral beams and the left and right lateral beams and the legs to each other. It is characterized by doing so.

  According to a second aspect of the present invention, in the table leg remodeling structure according to the first aspect, the leg is formed of a cylindrical or prismatic tube.

  The invention of claim 3 is a table leg remodeling structure according to claim 1 or 2, wherein the front, rear transverse beam and left and right lateral beams have one end portion and the other end portion with a connecting recess and an upper portion respectively opened. And two fittings formed on the inner side of the upper end of the tubular body of the leg, and provided with through holes through which the connection screws pass, in the bottom plate portion and the upper plate portion of each connection recess. A recess depth of the joint portion is set to a depth to the base portion attachment position, and a female screw hole into which the connecting screw is screwed is formed in the center of the base portion.

  A large amount of screws is not required, and in particular, the crossing of the front, rear and left and right lateral beams is connected via the connecting recesses provided at the ends of the front, rear and left and right lateral beams. The lower end portion of the connecting screw that is inserted into a through-hole formed in the upper plate portion of the front and rear lateral beams and the left and right lateral beams. Since the front and rear lateral beams and the ends of the left and right lateral beams and the legs are connected and fixed to each other, only one connecting screw is required, so that assembly is extremely easy. Reduce the use of screws and achieve a favorable stability bond.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

    FIG. 5 is a three-dimensional exploded view of the main part of the first embodiment of the table leg remodeling structure of the present invention. Legs 50 are respectively disposed at corners of the intersections of the pair of left and right lateral beams 70 for fixing the legs and the front and rear lateral beams 60 disposed on the back surface of the table top plate a. It is fixed by one screw 80.

    As shown in the cross-sectional view of the main part of FIG. 6, the leg 50 is formed of a hollow cylindrical body having a prismatic shape, and the left and right lateral beams 70 and the front and rear lateral beams are respectively arranged on the inner ends of the upper ends. A fitting portion 51 for fitting the end portion of 60 is provided, and a base portion 52 is fixedly provided in the tubular body in the vicinity of the upper end portion in the tubular body, and the connecting screw 80 is provided in the central portion of the base portion 52. Is formed with a female screw hole 53.

    FIG. 7 is a cross-sectional view of the main part showing the front and rear transverse beams 60 in the longitudinal direction. A fitting portion 61 for fitting with the ends of the left and right lateral beams 70 is provided above the ends. Then, a through hole 62 is provided in the bottom plate portion of the fitting portion 61, and an engaging fitting groove 63 is provided below the fitting portion 61 at an appropriate position.

    FIG. 8 is a cross-sectional view of the main part showing the left and right horizontal beams 70 in the longitudinal direction. A fitting part 71 is provided below the end part. 72, and a fitting groove 73 for engagement is provided below the fitting portion 71 at an appropriate position below.

  The combination of the configurations will be described with reference to FIGS. 9 and 10 at the same time. First, the ends of the front and rear transverse beams 60 are connected to the fitting portion 51 at the upper end of the leg 50, and at the same time, the fitting for engagement The groove 63 is fitted into the bottom end of the fitting portion 51, and the ends of the left and right lateral beams 70 are connected by another fitting portion 51 of the leg 50, and at the same time, the fitting fitting groove 73 is formed. The fitting portion 51 is fitted into the bottom end portion of the fitting portion 51. The fitting portion 71 corresponds to the fitting portion 61 and engages with each other. Finally, the connecting screw 80 passes through the through hole 72 and the through hole 62 from above. Then, they are screwed into the female screw holes 53 of the base portion 52, and the legs 50, the front and rear lateral beams 60, and the left and right lateral beams 70 are coupled and fixed to each other. The connecting recesses 61 and 71 formed at the ends of the front and rear horizontal beams 60 and the left and right horizontal beams 70 have recesses formed in opposite directions at the other end.

  FIG. 11 is a diagram showing a usage state of the table leg modification structure according to the present invention. Four legs 50, a pair of front and rear lateral beams 60, and a pair of left and right lateral beams 70 are combined to form a connection screw 80. It is the structure fixed and arrange | positioned on the back surface of the top plate of a table.

  FIG. 12 is a three-dimensional exploded view showing the main part of the second embodiment of the table leg modification structure of the present invention. The four legs 50 use columnar legs 50a, and the front, The rear lateral beam 60, the left and right lateral beams 70, and the connecting screw 80 are used together.

    As shown well in FIG. 13, the leg 50a according to the second embodiment is formed of a circular tube, and the upper end is fitted into a quarter of the leg toward the inside of the leg 50a. A base portion 52a is fixed at an appropriate location in the upper tubular body, and a female screw hole 53 into which the connecting screw 80 is screwed is formed at the center of the base portion 52a.

  As shown in FIG. 14, first, the ends of the front and rear transverse beams 60 are connected to the fitting portion 51a at the upper end of the leg 50a, and at the same time, the engagement fitting groove 63 is connected to the fitting portion 51a. Further, the ends of the left and right horizontal beams 70 are connected to each other by another fitting portion 51a of the leg 50a, and at the same time, an engaging fitting groove 73 is formed at the bottom end of the fitting portion 51a. The fitting portion 71 corresponds to the fitting portion 61 and is engaged with each other. Finally, the connecting screw 80 passes through the through hole 72 and the through hole 62 from above and is screwed and connected to the female screw hole 53a. Thus, the leg 50a, the front and rear lateral beams 60, and the left and right lateral beams 70 are coupled and fixed to each other.

  FIG. 15 is a view showing an assembled and used state of the second embodiment of the present invention, in which four legs 50a, a pair of front and rear transverse beams 60, a pair of left and right transverse beams 70 and a connecting screw 80 are combined. It is the structure arrange | positioned by the top plate back surface.

  According to the above-described embodiment relating to the table leg remodeling structure of the present invention, the front and rear transverse beams 60 and the left and right lateral beams 70 are fitted to the respective ends without using a large number of connecting screws 80. By forming the portion 61 and the fitting portion 71 and the fitting portion 61 and the fitting portion 71 are mutually fitted, stable coupling is achieved.

  16 and 17 are a three-dimensional exploded view showing a third embodiment of the table leg remodeling structure of the present invention and a cross-sectional view of the main part in a combined state.

  According to the third embodiment, as in the first and second embodiments described above, the front and rear lateral beams 60 and the left and right lateral beams 70 are not provided with engagement fitting grooves 63 and 73. The fitting part 51a formed on the leg 50 is deepened, and at the time of assembly, one end of the front and rear transverse beams 60 is connected by the fitting part 51 at the upper end part of the leg 50, and is installed on the base part 52 at the same time. Furthermore, one end of each of the left and right horizontal beams 70 is connected by another fitting portion 51 of the leg 50. At the same time, the fitting portion 71 corresponds to the fitting portion 61 and engages with each other. The connecting screw 80 is installed on the base portion 52a. Finally, the connecting screw 80 passes through the through hole 72 and the through hole 62 from above and is connected to the female screw hole 53 at the center of the base portion. , The right lateral beam 70 is fixedly coupled to each other.

It is the three-dimensional exploded view of the principal part of the conventional leg structure of the present invention. FIG. 3 is a three-dimensional assembly diagram of FIG. 1. FIG. 3 is a cross-sectional view along aa in FIG. 2. It is a perspective view which shows the use condition of the leg structure of the table of the conventional this invention. It is a three-dimensional exploded view of a main part showing a first embodiment of a table leg remodeling structure of the present invention. FIG. 6 is a partially cutaway three-dimensional cross-sectional view of the leg in FIG. 5. FIG. 6 is a partially cutaway three-dimensional cross-sectional view of the front and rear transverse beams 60 in FIG. 5. FIG. 6 is a partially cutaway three-dimensional cross-sectional view of the left and right horizontal beams 70 in FIG. 5. It is a three-dimensional assembly drawing in the modified structure of the table leg of the present invention. FIG. 10 is a cross-sectional view taken along line BB in FIG. 9. It is a figure which shows the use condition in the remodeling structure of the table leg of this invention. It is the three-dimensional exploded view of the principal part which shows 2nd Example of the remodeling structure of the leg of the table | surface of this invention. FIG. 13 is a partially cutaway three-dimensional cross-sectional view of the circular leg of FIG. 12. FIG. 13 is a three-dimensional assembly diagram of FIG. 12. It is a perspective view which shows the use condition of 2nd Example in the remodeling structure of the leg of the table | surface of this invention. It is a three-dimensional exploded view showing a third embodiment of the table leg modification structure of the present invention. It is sectional drawing of the principal part assembly state in 3rd Example of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Left, right horizontal beam 11 ... Passage hole 12 ... Connection hole 13 ... Connection hole 14 ... Engagement fitting groove 20 ... Front, rear horizontal beam 21 ... Connection hole 22 ... Engagement fitting groove 30, 50 ... Leg 31,51 , 51a ... fitting portion 32 ... through hole 40, 80 ... screw 52, 52a ... base portion 53, 53a ... female screw hole 50a ... leg 60 ... front and rear cross beam 61 ... fitting portion 62 ... hole 63 ... fitting for engagement Groove 70 ... Left, right lateral beam 71 ... Fitting portion 72 ... Through hole 73 ... Fitting groove for engagement

Claims (3)

A pair of front and rear transverse beams and left and right transverse beams for fixing the legs arranged in a rectangular shape on the back of the table top plate, and corners that are intersections of the front, rear transverse beams and left and right lateral beams Is a table leg remodeling structure in which each leg is fixed by one connecting screw,
The leg is formed of a hollow tube, and includes two adjacent fitting portions for fitting the ends of the front and rear lateral beams and the left and right lateral beams, respectively, on the inner side of the upper end portion of the tubular body. And, a base portion is fixed in the tube near the upper end of the tube body, and a female screw hole into which the connecting screw is screwed is formed at the center of the base portion.
The front and rear lateral beams and the left and right lateral beams have one end portion and the other end portion, each having a connection recess opening upward and a connection recess opening downward, and a bottom plate portion and an upper plate portion of each connection recess Is provided with a through-hole through which the connection screw passes, and an engagement fitting groove formed by cutting the front and rear lateral beams and the bottom and side plates of the left and right lateral beams in close proximity to the respective connection recesses. ,
The corners that are the intersections of the front and rear lateral beams and the left and right lateral beams are connected to each other through respective connecting recesses, and the connecting parts are respectively fitted to the two fitting parts of the leg upper end part. And engaging the engaging grooves for engaging the front and rear transverse beams and the left and right lateral beams with the bottom end of the fitting portion, and the upper plate portion of the front and rear transverse beams and the left and right lateral beams. The lower end portion of the connecting screw penetrated through the through-hole formed in is screwed to the base portion so that the ends of the front and rear lateral beams and the left and right lateral beams and the legs are connected and fixed to each other. Remodeled structure of table legs, characterized by The table leg remodeling structure according to claim 1, wherein the leg is a cylindrical or prismatic tube. The front and rear lateral beams and the left and right lateral beams have one end and the other end provided with connecting recesses that open downward and connecting recesses that open upward, respectively, and a bottom plate portion and an upper plate portion of each connecting recess. A through-hole through which the connecting screw passes is provided, and the recess depth of the two fitting portions formed on the inner side of the upper end portion of the tubular body of the leg is set to the depth to the base portion mounting position, and is formed at the center of the base portion. 3. The table leg remodeling structure according to claim 1, wherein a female screw hole into which the connecting screw is screwed is formed.