JP2005163303A - Frame connection structure, frame body, leg body, joint body and furniture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a frame connection structure capable of connecting frames having inclined end faces, accurately to each other through simple structure and operation. <P>SOLUTION: In connecting a pair of frames 1, 2 at a predetermined angle through a corner connecting member 3, the frames 1, 2 are provided with inclined end faces 11, 21 inclined with respect to a longitudinal direction, and the corner connecting member 3 is provided with inclined end faces inclined with respect to the longitudinal direction of the respective frames 1, 2. A clamping means 4 for applying clamping force in a closely sticking direction of the inclined end faces 11, 31a and 21, 31b corresponding to each other along the longitudinal direction of the frames 1, 2, and a positioning means 5 for positioning the frames 1, 2 and corner connecting member 3 into a predetermined position in a partially abutting manner when the frames 1, 2 and corner connecting member 3 are relatively displaced by the clamping force in an orthogonal direction to the longitudinal direction through the inclined end faces 11, 31a, 21, 31b, are constituted between the frames 1, 2 and the corner connecting member 3. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a frame connection structure for appropriately connecting frames having inclined end surfaces at a predetermined angle, and a frame, a leg, a joined body, and furniture configured using the frame connection structure.

For example, there is a frame connection structure disclosed in Patent Document 1. In this structure, a pair of frames are connected at right angles via a corner connecting member, and an inclined end face inclined at 45 degrees with respect to the longitudinal direction is provided on a frame having a cavity, and a protruding plate of the corner connecting member is provided. An inclined end surface inclined at 45 degrees with respect to the longitudinal direction of each frame is provided on the leg portion that protrudes in the orthogonal direction from the portion. Each leg portion is inserted into a corresponding frame cavity, and in this state, the frame and the leg portion are coupled to each other at a right angle by screwing to form a rectangular frame-shaped door frame.
Japanese Patent Laid-Open No. 10-196237

  However, such a connection structure is one in which a screw inserted from the back surface of the frame is screwed into the leg portion and fixed along a direction orthogonal to the insertion direction of the leg portion. For this reason, positioning accuracy is liable to decrease due to an assembly error based on the intersection of the screw insertion hole of the frame and the screw hole of the leg portion with the screw, or a processing error of the hole. There is a problem that it is easy to invite. Even if it is possible to improve the processing accuracy through thorough dimensional control, the end surface of the corner connecting member and the end surface of the frame are not brought into close contact with each other under such a connecting structure. It is difficult to realize a strongly connected state, and there is a problem that it is easily distorted into a parallelogram. Further, in order to prevent this, if the number of the fixing screws is increased, the appearance is further deteriorated due to the screws being exposed everywhere.

  The present invention has been made paying attention to such a problem, and is constituted by a frame connecting structure and a frame connecting structure capable of accurately connecting frames having inclined end faces through a simple structure and operation. An object of the present invention is to provide a frame, a leg, a joined body, and furniture.

  In order to achieve this object, the present invention takes the following measures.

  That is, in the frame connection structure of the present invention, when connecting a pair of frames at a predetermined angle via a corner connection member, the frame is provided with an inclined end surface inclined with respect to the longitudinal direction, An inclined end face inclined with respect to the longitudinal direction of the frame is provided. And a clamping means for applying a clamping force in a direction in which the corresponding inclined end surfaces are brought into close contact with each other along the longitudinal direction of the frame between the frame and the corner connecting member, and the frame and the corner connecting member cause the inclined end surface to be moved by the clamping force. And a positioning means for positioning at a predetermined position by bringing a part of both into contact with each other when they are relatively displaced in a direction perpendicular to the longitudinal direction.

  In the above structure, when a tightening force is applied by the tightening means, and when the inclined end surfaces of the frame and the corner connecting member are moved toward each other, a part of the operation is orthogonal to the longitudinal direction of the frame via the inclined end surfaces. It is converted into relative displacement in the direction, and positioning is performed by the positioning means engaging a part of both at a predetermined position. Then, the inclined end surfaces are finally brought into close contact with each other by the tightening force applied thereafter at that position, and the connection is completed.

  As a concrete embodiment, there may be mentioned one in which a 45 ° inclination is given to the inclined end face and the frames are connected at a right angle.

  In a preferred embodiment, the frame includes a cavity that opens to the inclined end surface, the corner connecting member includes a protrusion that protrudes from the inclined end surface and can be inserted into the cavity, and the positioning means includes a part of the outer surface of the protrusion. And a part of the inner surface of the cavity.

  It is desirable that the protrusions can be fitted into the cavity.

  In order to maintain a good appearance, it is preferable that the corner connecting member has a pair of protrusions projecting from each other in the orthogonal direction from both sides of the thin plate-like protruding piece, and both sides of the protruding piece are inclined end faces of the corner connecting member. .

  In this case, in order to effectively adjust the appearance of the corner portion in the connected state, at least the front surfaces orthogonal to the inclined end surfaces of the frame are continuously made to be substantially flush with each other including the front surface of the protruding piece of the corner connecting member. It is effective that the side surfaces orthogonal to the front surface of the frame are made to be substantially flush with each other while being bent at right angles including the side surfaces of the protruding pieces of the corner connecting members.

  As the tightening means, one having a screw element that draws the frame toward the corner connecting member is preferable.

  In particular, the fastening means is inserted into the corner connecting member along the longitudinal direction of one frame and inserted into the corner connecting member along the longitudinal direction of the other frame. And a second screw element to be screwed into the other frame.

  In order to make the appearance better, it is preferable that the screw element screwed in first among the first and second screw elements is structured to be concealed by the frame into which the subsequent screw element is screwed.

  In order to effectively avoid interference between the screw elements, the position of the head of the screw element that is screwed first among the first and second screw elements is beyond the region that should pass when the screw element screwed later is screwed. It is desirable to be positioned in

  The frame connecting structure as described above uses a frame and a corner connecting member as a pair of vertical frame members, a pair of horizontal frame members, and corner connecting members arranged at the four corners, and constitutes a frame and furniture having the frame. The frame and corner connecting member are used as a pair of pedestals, a horizontal member connecting the two pedestals, and a corner connecting member disposed between the horizontal member and each pedestal. This is suitable for the case of constructing furniture having a body. In addition to these, it is also suitable when, for example, a furniture having a joined body or a joint portion equivalent thereto using a frame and a corner connecting member constituting the frame connecting structure.

  According to the present invention, with the configuration described above, a frame connecting structure that allows frames having inclined end surfaces to be accurately connected through a simple structure and operation, and a frame body, a leg body, and a joined body formed thereby. And furniture can be provided effectively.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 shows a sliding door storage that is furniture to which the frame connection structure of the present embodiment is applied. In this storage, a corner connecting member 3 is arranged at four corners at right angles between the frame 1 which becomes a pair of vertical frame members x1 and the frame 2 which becomes a pair of horizontal frame members x2, and is attached to the storage. The sliding door frame X is constructed. 2 is a perspective view showing the corner connecting member 3 in the upper left corner portion of FIG. 1 and its periphery, FIG. 3 is a view showing the assembly procedure, FIG. 4 is a sectional view taken along the line IV-IV in FIG. FIG. 6 is a sectional view taken along line V-VI, FIG. 6 is a sectional view taken along line VI-VI, and FIG. 7 is a sectional view taken along line VII-VII. FIG. 8 is a front sectional view of the corner portion in the assembled state.

  More specifically, the frames 1 and 2 are formed by cutting the aluminum extruded material A into a required length, and the aluminum extruded material is composed of a front wall a1 and a rear wall a2 as shown in FIGS. A space closed inside is formed by the outer wall a3 and the inner wall a4, and an intermediate wall a5 is further provided between the inner wall of the front wall a1 and the rear wall a2, and the space is substantially divided into the inner cavity a6 and the outer cavity a7. 2 minutes. A groove a8 that is recessed toward the outer wall a3 is provided in a part of the inner wall a4, and an edge of a face plate p (see FIG. 1) that constitutes a sliding door is inserted into and held in the groove a8. Moreover, the partial cylindrical part a9 extended along an extrusion direction is provided in the intermediate wall a5, and the screw hole a10 is formed in this partial cylindrical part a9. As shown in FIG. 3, inclined end faces 11 and 21 cut at 45 degrees with respect to the longitudinal direction are provided at the ends of the frames 1 and 2 thus formed.

  On the other hand, the corner connecting member 3 is made of aluminum die-casting, and as shown in FIGS. 2 to 7, a pair of protrusions 32 and 33 protrude from each other in the orthogonal direction from both surfaces of the thin plate-like projecting piece 31. Make. The protruding piece 31 forms an angle of 45 degrees with respect to the longitudinal direction of each of the orthogonal frames 1 and 2, so that one inclined end face 31 a of the protruding piece 31 is parallel to the inclined end face 11 of one frame 1, The other inclined end face 31 b is in parallel with the inclined end face 21 of the other frame 2. In the present embodiment, one protrusion 32 protrudes from the inclined surface 30a of the member body 30 having a right isosceles triangle shape, and the other protrusion 33 protrudes from one of the equal sides 30b, and the projecting piece 31 is formed on the inclined surface 30a. It has a rigid structure. Of course, the protrusions 32 and 33 and the protruding piece 31 may be integrally formed. One protrusion 32 is set to have a cross-sectional shape and a position capable of fitting relatively closely to the inner cavity a6 of the corresponding frame 1, and the other protrusion 33 is relatively tightly connected to the outer cavity a7 of the corresponding frame 2. It is set to a cross-sectional shape and a position where fitting is possible. Further, in the fitted state, as shown in FIG. 2, the front surface 31c and the outer surface 31d of the projecting piece 31 are substantially flush with the front surfaces 12, 22 and the outer surfaces 13, 23 of the frames 1, 2. The projecting dimension of the projecting piece 31 from the protrusions 32 and 33 is defined. Here, the front surfaces 12 and 22 of the frames 1 and 2 refer to the surface of the front wall a1 of the aluminum extruded material A used therein, and the outer surfaces 13 and 23 of the frames 1 and 2 are used for this. This refers to the surface of the side wall a3 of the extruded aluminum material A. The front surface 31c and the outer surface 31d of the projecting piece 31 are surfaces adjacent to the front surfaces 12, 22 and the outer surfaces 13, 23 of the frames 1, 2, respectively.

  And between the frames 1, 2 and the corner connecting member 3, along the longitudinal direction of the frames 1, 2, the corresponding inclined end surfaces 11, 31a of the frames 1, 2 and the corner connecting member 3 or the inclined end surfaces 21, Tightening means 4 for applying a tightening force in a direction in which 31b is brought into close contact with each other, and the frames 1, 2 and the corner connecting member 3 are elongated through the inclined end surfaces 11, 31a or the inclined end surfaces 21, 31b by the tightening force. Positioning means 5 is provided for positioning at a predetermined position by bringing both of them into contact when they are relatively displaced in a direction orthogonal to the direction.

  As shown in FIGS. 3 and 8, the tightening means 4 includes the screw holes a10 provided in the frames 1 and 2, and countersinks 41a and 42a provided in the corner connecting member 3 at corresponding portions of the screw holes a10. Screw insertion holes 41 and 42, and first and second screw elements v1 and v2 that are inserted through the screw insertion holes 41 and 42 and screwed into the corresponding screw holes a10 of the frames 1 and 2, respectively.

  Specifically, the first screw element v1 is inserted into the screw insertion hole 41 of the corner connecting member 3 along the longitudinal direction of the one frame 1 and screwed into the screw hole a10 of the one frame 1. The second screw element v <b> 2 is inserted into the screw insertion hole 42 of the corner connecting member 3 along the longitudinal direction of the other frame 2 and is screwed into the screw hole a <b> 10 of the other frame 2.

  In the present embodiment, the second screw element v2 is screwed first, and the inclined end surface 21 of the other frame 2 is first brought into contact with the inclined end surface 31b of the projecting piece 31, and the other frame 2 and the corner are cornered. The connecting member 3 is coupled by the second screw element v2. Thereafter, the inclined end surface 11 of the frame 1 is brought into contact with the inclined end surface 31a of the projecting piece 31, and the one frame 1 and the projection 32 of the corner connecting member 3 are coupled. Thus, when the inclined end surface 11 of the frame 1 is brought into contact with the inclined end surface 31 a of the projecting piece 31, the second screw element v <b> 2 screwed in first is hidden by the frame 1.

  In order to introduce the first screw element v1 to be screwed later, the outer wall 23 of the frame 2 is provided with a screw insertion hole 23a at a portion corresponding to the screw insertion hole 41. That is, only the screw insertion hole 23a is exposed at the corner portion in this embodiment.

  Moreover, in this embodiment, although the screw insertion holes 41 and 42 cross in the middle, the 2nd screw element v2 screwed in first is screwed in the 1st screw element v1 screwed later including the head. The counterbore 42a of the screw insertion hole 42 is formed deeper than the intersecting portion so as to be screwed to a position beyond the region to be passed. The counterbore 41a of the screw insertion hole 41 is located in front of the intersecting portion. Therefore, when disassembling, the first screw element v2 is first removed, and then the second screw element v1 is removed.

  On the other hand, the positioning means 5 is constituted by a part of the outer surface of the protrusion 32 on the frame 1 side and a part of the inner surface of the inner cavity a6, and the outer surface of the protrusion 33 on the frame 2 side. It is constituted by a part and a part of the inner surface of the outer cavity a7.

  More specifically, when the first screw element v1 constituting the tightening means 4 is tightened, the frame 1 is attracted in the direction indicated by the arrow w1 in FIG. 3, thereby the corner connecting member 3 via the inclined end surfaces 11 and 31a. In contrast, it causes a relative displacement to the left in the figure. That is, when the frame 1 is displaced relatively to the left and the corner connecting member 3 is displaced relatively to the right, as shown in FIGS. 3 and 5, the inner surface 14a on the inner wall 14 side of the frame is connected to the corner connecting member. The corresponding outer surface 32a of the protrusion 32 of the member 3 abuts. Further, when the second screw element v2 constituting the tightening means 4 is tightened, the frame 2 is attracted in the direction indicated by the arrow w2 in FIG. 3, whereby the corner connecting member 3 is illustrated in FIG. Causes a relative displacement upward. That is, when the frame 2 is displaced relatively upward and the corner connecting member 3 is displaced relatively downward, as shown in FIGS. 3 and 7, an inner surface a9x located on the outer periphery of the partial cylindrical portion a9 of the frame; The corresponding outer surface 33a of the protrusion 33 of the corner connecting member 3 comes into contact. The outer surface 33a is concavely curved along the partial cylindrical portion a9.

  Note that the positioning in the direction perpendicular to the paper surface of FIG. 3 is performed by fitting the projection 32 with the cavity a6 of the frame 1 and by fitting the projection 33 with the cavity a7 of the frame 2. .

  As described above, the frame connection structure of the present embodiment is for connecting the pair of frames 1 and 2 at a predetermined angle via the corner connection member 3. Inclined end surfaces 11 and 21 that are inclined relative to the longitudinal direction of the frames 1 and 2 are provided on the corner connecting member 3. And the fastening means which acts between the frames 1 and 2 and the corner connecting member 3 with a fastening force in a direction in which the corresponding inclined end faces 11 and 31a and 21 and 31b are in close contact with each other along the longitudinal direction of the frames 1 and 2 4 and when the frames 1, 2 and the corner connecting member 3 are relatively displaced in the direction perpendicular to the longitudinal direction via the inclined end surfaces 11, 31a, 21, 31b by the tightening force, a part of both is brought into contact with It comprises positioning means 5 for positioning at a predetermined position.

  That is, in such a structure, when the tightening force by the tightening means 4 is applied, and the inclined end surfaces 11, 31a, 21 and 31b of the frames 1 and 2 and the corner connecting member 3 are moved toward each other, one of the operations is performed. The part is converted into a relative displacement in a direction perpendicular to the longitudinal direction of the frames 1 and 2 through the inclined end faces 11, 31a, 21, and 31b, and the positioning means 5 is positioned by engaging a part of both at a predetermined position. Do. Then, the inclined end surfaces 11, 31a, 21 and 31b are finally strongly adhered by the tightening force applied thereafter at that position, and the connection is completed.

  Therefore, according to the present embodiment, the inclined end surfaces 11, 31 a, 21, 31 b can be strongly connected in the longitudinal direction of the frames 1, 2, and the positioning means 5 is connected to the frames 1, 2 and the corner connecting member 3. Therefore, the positioning accuracy can be easily improved as compared with the case where positioning is performed indirectly via another member such as a screw. This also eliminates assembly errors and facilitates dimensional management. In particular, the inclined end surfaces 11 and 21 of the frames 1 and 2 are necessary for abutting the frames 1 and 2 at the corner, and this embodiment can be configured by suitably using the inclined end surfaces 11 and 21. It will be useful.

  In particular, since the connection structure of the present embodiment provides 45 degrees of inclination to the inclined end faces 11 and 21 and connects the frames 1 and 2 at a right angle, it is equal to both the frames 1 and 2. Thus, it is possible to obtain an appropriate assembly accuracy and rigidity without distortion in the frame body composed of the vertical frame member x1 and the horizontal frame member x2.

  As a specific structure, the frames 1 and 2 are provided with cavities a6 and a7 that open to the inclined end surfaces 11 and 21, and the corner connecting member 3 protrudes from the inclined end surfaces 11 and 21 and can be inserted into the cavities a6 and a7. Protrusions 32 and 33 are provided, and the positioning means 5 is constituted by a part of the outer surfaces 32a and 33a of the protrusions 32 and 33 and a part of the inner surfaces 14a and a9x of the cavities a6 and a7.

  For this reason, the pinching structure of the protrusions 32 and 33 and the cavities a6 and a7 makes it possible to easily realize a connection with an appropriate depth, and the positioning means 5 allows the surfaces 32a and 14a, 33a and a9x to be connected to each other. Since positioning is performed by contact, an appropriate positioning function can be exhibited without deteriorating the appearance.

  In particular, since the protrusions 32 and 33 can be fitted into the cavities a6 and a7, the thickness of the protrusions 32 and 33 can be ensured as much as possible to effectively increase the strength.

  The corner connecting member 3 has a pair of protrusions 32 and 33 projecting in the orthogonal direction from both surfaces 31a and 31b of the thin plate-like projecting piece 31, and the both surfaces 31a and 31b of the projecting piece 31 are connected to the corner. Since the inclined end surface of the member 3 is used, a pair of inclined surfaces corresponding to the inclined end surfaces 11 and 21 of both the frames 1 and 2 are suppressed while minimizing the appearance of the corner connecting member 3 interposed between the frames 1 and 2 from the outside. The end surfaces 31a and 31b can be effectively secured to the corner connecting member 3.

Further, in the connected state, at least the front surfaces 12 and 22 orthogonal to the inclined end surfaces 11 and 21 of the frames 1 and 2 are substantially flush with each other including the front surface 31c of the protruding piece 31 of the corner connecting member 3, Further, since the side surfaces 13 and 23 orthogonal to the front surfaces 12 and 22 of the frame 1 are bent at right angles including the side surface 31d of the projecting piece 31 of the corner connecting member 3 and are substantially flush with each other, The appearance of the side and side can be kept good.
On the other hand, the fastening means 4 that realizes the connection structure of the present embodiment includes screw elements v1 and v2 that draw the frames 1 and 2 toward the corner connection member 3, so that the screw has a pull-in action and a self-locking function. Using this, it is possible to reliably introduce a tightening force and maintain the tightened state.

  In particular, the fastening means 4 is inserted into the corner connecting member 3 along the longitudinal direction of one frame 1 and screwed into the one frame 1, and along the longitudinal direction of the other frame 2. Since the second screw element v2 inserted into the corner connecting member 3 and screwed into the other frame 2 is provided, a required screwing amount can be provided along the longitudinal direction of the frames 1 and 2, and effective tightening can be performed. Power can be easily secured.

  In particular, the screw element v2 that is screwed first out of the first and second screw elements v1 and v2 is a structure that is concealed by the frame 1 into which the subsequent screw element v1 is screwed. Only the screw insertion hole 23a of the first screw element v1 is exposed to the screw insertion hole, which contributes to improving the appearance of the connecting portion.

  Further, the screw element v2 that is screwed first out of the first and second screw elements v1 and v2 is positioned at a position beyond the region to be passed when the screw element v1 to be screwed later is screwed. Therefore, interference between screw elements can be avoided accurately.

  And the storage body which employ | adopted the frame x of this embodiment and the said frame x as a sliding door can be suitably comprised by the frame connection structure which consists of the frames 1 and 2 and the corner connection member 3 of this invention.

  The specific configuration of each unit is not limited to the above-described embodiment.

  For example, both the protrusions may be inserted into the outer cavity or the inner cavity. Alternatively, as shown in FIG. 9, a single cavity a100 having no partition is provided inside the frames 101 and 102, and the projections 132 and 133 provided on the corner connecting member 103 are fitted in the entire area of the cavity a100. You may do it. In the figure, what is indicated by reference numeral 130x is that when the inclined end surfaces 111, 121 of the frames 101, 102 and the inclined end surfaces 130a, 130b of the corner connecting member 103 are relatively slid, they abut against the inner surfaces of the frames 101, 102. Are auxiliary projections that define the relative positions of the two, and constitute the positioning means 104 of the present invention. Also, as shown in the figure, the screw insertion holes 141 and 142 for inserting the first and second screw elements crossed each other's passing area so as not to interfere with the screwing of the other screw element. The counterbore 141a, 142a may be formed at a position where the head can be screwed to the position. In this way, there is an advantage that there are no restrictions before and after the pair of screw elements. In the figure, the connecting structure between the frames 101 and 102 and the corner connecting member 103 is basically the same as the connecting structure between the frames 1 and 2 and the corner connecting member 3 in the above embodiment.

  Further, as shown in FIG. 10, the frame connecting structure of the present invention has a pair of leg posts y1, a horizontal member y2 connecting the two leg posts y1, and a horizontal member y2 as shown in FIG. And the leg connecting member 203 disposed between the leg posts y1 and the leg y or furniture such as a table having the leg y can be configured. The connection structure between the frames 201 and 202 and the corner connection member 203 is basically the same as the connection structure between the frames 1 and 2 and the corner connection member 3 in the above embodiment.

  In addition, the frame connection structure of the present invention is applied to the frame connection of doors and other frame bodies, or the angle connection or crank-shaped connection body is formed by the frame connection structure of the present invention, or such a connection body or the like. Various modifications can be made without departing from the spirit of the present invention, such as configuring doors, desks, shelves, and other various furniture having joints.

The perspective view which shows the storage which is the furniture to which the frame connection structure which concerns on one Embodiment of this invention was applied. The partial expansion perspective view which abbreviate | omits and shows the upper left corner part of the front view of FIG. The figure which shows the assembly | attachment procedure of the corner part. IV-IV sectional view taken on the line in FIG. The VV line fragmentary sectional view. The VI-VI sectional view taken on the line. The VII-VII line fragmentary sectional view. The front sectional view which shows the assembly | attachment state in the said corner part. The figure which shows the modification of the frame connection structure of this invention. The perspective view which shows the leg body and table which are the other application examples regarding the frame connection structure of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 2 ... Frame 3 ... Corner connection member 4 ... Tightening means 5 ... Positioning means 11, 21 ... Inclined end surface 12, 22, 31c ... Front surface 13, 23, 31d ... Side surface 14a, a9x ... Inner surface 31 ... Overhang piece 31a, 31b ... Inclined end face 32, 33 ... Projection 32a, 33a ... Outer surface a6, a7 ... Cavity x ... Frame body x1 ... Vertical frame material x2 ... Horizontal frame material v1 ... First screw element v2 ... Second screw element

Claims (17)

For connecting between a pair of frames at a predetermined angle via a corner connecting member,
The frame is provided with an inclined end face inclined with respect to the longitudinal direction, and the corner connecting member is provided with an inclined end face inclined with respect to the longitudinal direction of each frame,
Tightening means for applying a tightening force in a direction in which the corresponding inclined end faces are brought into close contact with each other along the longitudinal direction of the frame between the frame and the corner connecting member, and the frame and the corner connecting member through the inclined end face by the tightening force. A frame connecting structure characterized by comprising positioning means for positioning at a predetermined position by contacting a part of both when they are relatively displaced in a direction perpendicular to the longitudinal direction. For connecting the pair of frames at right angles via a corner connecting member,
The frame is provided with an inclined end face inclined at 45 degrees with respect to the longitudinal direction, and the corner connecting member is provided with an inclined end face inclined at 45 degrees with respect to the longitudinal direction of each frame,
Tightening means for applying a tightening force in a direction in which the corresponding inclined end faces are brought into close contact with each other along the longitudinal direction of the frame between the frame and the corner connecting member, and the frame and the corner connecting member through the inclined end face by the tightening force. A frame connecting structure comprising positioning means for positioning at a predetermined position by contacting a part of both when they are relatively displaced in a direction perpendicular to the longitudinal direction. The frame includes a cavity that opens to the inclined end surface, the corner coupling member includes a protrusion that protrudes from the inclined end surface and can be inserted into the cavity, and the positioning means includes a part of the outer surface of the protrusion and the inner surface of the cavity. The frame connection structure according to claim 1 or 2, comprising a portion. The frame connection structure according to claim 3, wherein the protrusion is capable of fitting into the cavity. 5. The frame according to claim 1, wherein the corner connecting member is formed by projecting a pair of protrusions from both surfaces of the thin plate-like projecting piece in a direction orthogonal to each other, and both surfaces of the projecting piece are inclined end surfaces of the corner connecting member. Connected structure. 6. The frame connection structure according to claim 5, wherein at least the front surfaces orthogonal to the inclined end surfaces of the frames are substantially flush with each other including the front surface of the protruding piece of the corner connection member. The frame connection structure according to claim 6, wherein in a connected state, side surfaces orthogonal to the front surface of the frame are substantially flush with each other while being bent at right angles including the side surfaces of the protruding pieces of the corner connection members. The frame connection structure according to claim 1, wherein the tightening means includes a screw element that draws the frame toward the corner connection member. The fastening means is inserted into the corner connecting member along the longitudinal direction of one frame and screwed into the one frame, and is inserted into the corner connecting member along the longitudinal direction of the other frame. The frame connection structure according to claim 8, further comprising a second screw element screwed into the other frame. The frame connection structure according to claim 9, wherein the screw element screwed first among the first and second screw elements is concealed by a frame into which the screw element is screwed later. The frame connection structure according to claim 9 or 10, wherein the screw element screwed in first among the first and second screw elements is positioned at a position beyond a region to be passed when the screw element screwed in later is screwed. . It is comprised by using the frame and corner connection member which comprise the frame connection structure of Claims 1-11 as a pair of vertical frame material, a pair of horizontal frame material, and the corner connection member arrange | positioned at four corners. A frame body. The frame and the corner connecting member constituting the frame connecting structure according to claim 1 to 11 are a pair of leg columns, a horizontal member connecting the two leg columns, and a corner disposed between the horizontal member and each leg column. A leg that is configured by being used as a connecting member. It is comprised by using the frame and corner connection member which comprise the frame connection structure of Claims 1-11, The joined body characterized by the above-mentioned. The frame and the corner connecting member constituting the frame connecting structure according to claim 1 to 11 are used as a pair of vertical frame members, a pair of horizontal frame members, and a corner connecting member arranged at four corners to constitute a frame body. Furniture characterized by that. The frame and the corner connecting member constituting the frame connecting structure according to claim 1 to 11 are a pair of leg columns, a horizontal member connecting the two leg columns, and a corner disposed between the horizontal member and each leg column. Furniture characterized by being used as a connecting member and constituting a leg. The furniture which comprises a junction part using the frame and corner connection member which comprise the frame connection structure of Claims 1-11.

Images