JP2005207559A - Frame connecting structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a frame connecting structure capable of improving perpendicularity and perpendicular strength in perpendicular connection between frames. <P>SOLUTION: In the frame connecting structure, a side surface of one frame 1 and an edge surface of the other frame 2 are interconnected via a connecting member 3. The connecting member 3 has two perpendicular projecting sections 31 and 32 that are inserted into dovetail grooves 11 and 21 of one frame 1 and the other frame 2, respectively, and are fixed by fastening screws 4a, 4b, 5a and 5b. The other frame 2 has a tapered surface section 212 where screw tips 51a and 51b contact on a depth wall surface 211 of the dovetail groove 21 in fastening the fastening screws 5 and the other frame 2 is pulled to one frame 1 following turning thereof. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The invention of this application relates to a frame connection structure. More specifically, the invention of this application relates to a frame connection structure that is useful for right angle connection between various frames and can improve the right angle accuracy and the right angle strength.

Conventionally, as a structure for connecting frames at right angles to each other, for example, a structure described in Patent Document 1 is known. In this structure, one frame and another frame are connected at right angles via a connecting member and a joint member. More specifically, one end of the connecting member is connected to the small edge surface of the other frame by a tapping screw. The joint member is pivotally attached to the other end of the connecting member, and the joint member is engaged with the dovetail groove provided on the side surface of the one frame so that the side surface of the one frame and the small edge of the other frame The surface is brought into contact with each other and is connected at a right angle.
JP-A-8-303417

  However, in the conventional frame connecting structure described in Patent Document 1, since the joint member is only inserted and locked in the dovetail on the side surface of the frame, the frame is likely to wobble and the right angle accuracy and right angle strength are improved. It is difficult to keep it high.

  Therefore, in view of the circumstances as described above, the invention of this application is to provide a frame connection structure that can improve the right angle accuracy and right angle strength at the time of right angle connection and realize accurate connection. Yes.

  In order to solve the above problems, the invention of this application is, firstly, a frame connecting structure in which a side surface of one frame and a fore edge surface of another frame are connected to each other at right angles via a connecting member. The connecting member has two protrusions that are perpendicular to each other and are respectively inserted into a dovetail groove provided in one frame and a dovetail groove provided in another frame and fixed with a fastening screw. The other frame has a tapered surface portion that is in contact with the tip of the screw when tightening the fastening screw on the back wall surface of the dovetail groove and pulls the other frame to the one frame according to the rotation. A frame connection structure is provided.

  Second, there is a frame connection structure in which a side surface of one frame and a small edge surface of another frame are connected to each other at right angles via a connection member, and the connection member includes dovetail grooves provided on one frame and Projections that have two projecting parts perpendicular to each other that are inserted into the hollow parts provided in the other frames and fixed with fastening screws, and that are inserted into the hollow parts of the other frames and fixed with screws. Provides a frame connecting structure characterized in that it has a tapered surface portion that comes into contact with the tip of the screw when the fastening screw is tightened and attracts another frame to the one frame according to the rotation of the outer peripheral surface. To do.

  Third, there is a frame connection structure in which a side surface of one frame and a small edge surface of another frame are connected to each other at right angles via a connection member, and the connection member includes dovetail grooves provided on one frame and It has two protrusions that are perpendicular to each other and are inserted into hollow portions provided in other frames and fixed with fastening screws, and the other frames are wall plates that form the hollow portions. And providing a frame connecting structure characterized by having a tapered surface portion that contacts the tapered surface portion of the screw head when the fastening screw is tightened and attracts another frame to the one frame according to its rotation.

  According to the first frame connecting structure, the connecting member as described above is used, and the tapered surface portion as described above is provided in the dovetail groove of the other frame, so that each protruding portion of the connecting member corresponds. The frame is inserted and fixed in the dovetail of the frame, and the other frame is attracted to one frame by tightening the fastening screw with the screw tip in contact with the taper surface, so that the frames are perpendicular to each other with higher accuracy and right angle. Can be connected at right angles with strength.

  According to the second frame connection structure, by using the connection member as described above, and providing the tapered surface portion as described above on the protruding portion of the connection member inserted into the dovetail groove of another frame, Insert and fix each protrusion of the connecting member into the dovetail of the corresponding frame, and then pull the other frame to one frame by tightening the fastening screw with the screw tip in contact with the tapered surface. Can be connected at right angles with higher right angle accuracy and right angle strength than conventional ones.

  According to the third frame connecting structure, the connecting member as described above is used, and the tapered surface portion as described above is provided in the hollow portion of the other frame, so that each protruding portion of the connecting member corresponds. The frame is inserted and fixed in the dovetail of the frame, and the other frame is attracted to one frame by tightening the fastening screw with the screw tip in contact with the taper surface, so that the frames are perpendicular to each other with higher accuracy and right angle. Can be connected at right angles with strength.

[First Embodiment]
1 to 2 each show an embodiment of the invention of this application.

  In this embodiment, the connecting member (3) for connecting one frame (1) and the other frame (2) at right angles to each other at the side surface and the fore edge surface has two protrusions (31) that are perpendicular to each other. ) (32).

  One protrusion (31) has a long plate-like shape that is longer than at least the edge surface of the other frame (2), and has a dovetail groove (11 provided on the side surface of one frame (1). ) Have screw holes (311a) (311b) (see FIG. 2) for two fastening screws (4a) and (4b) for screw fixing after insertion into the same line at appropriate positions.

  The other protrusion (32) has a plate-like shape perpendicular to the one protrusion (31), and faces the facet of the other frame (2) in the one protrusion (31). The one protrusion (31) is vertically connected and integrated at an appropriate position of the part. Also, screw holes (321a) (321b) (2) for two fastening screws (5a) (5b) for fixing screws after insertion into dovetail grooves (21) provided on the side surface of the other frame (2) ( 2) on the same line at appropriate positions.

  The one frame (1) and the other frame (2) that are connected at right angles by the connecting member (3) are each provided with a dovetail groove (11) (21) in the longitudinal direction on the side surface in advance. It has become.

  Furthermore, in the dovetail groove (21) of the other frame (2), there are screw tip portions (51a) (51b) of the fastening screws (5a) (5b) inserted from the deep wall surface (211), that is, the groove entrance portion. ) On the wall surface to which the screw heads 5a and 5b are tightened, the taper portions 51a and 51b come into contact with each other when the fastening screws 5a and 5b are tightened, and the other frame 2 is pulled to the one frame 1 according to the rotation. Surface portions (212a) and (212b) are provided in advance. In the present embodiment, the tapered surface portions (212a) and (212b) have a bowl-like shape that is easy to slide in when the tapered screw tip portions (51a) and (51b) of the fastening screws (5a and 5b) come into contact with each other. It has an overall shape.

  In this, first, the other protrusion (32) of the connecting member (3) is inserted into the dovetail groove (21) of the other frame (2) from the small edge surface, and one protrusion (31) is inserted into one frame. By inserting the dovetail groove (11) of (1) from the small edge surface, the small edge surface of the other frame (2) and the side surface of one frame (1) are temporarily connected at right angles.

  Next, in this temporarily connected state, one projecting portion (31) is fixed to the dovetail groove (11) of one frame (1) by screwing the fastening screws (4a) (4b). In the present embodiment, the fastening screws (4a) and (4b) are screwed into the screw holes (311a) and (311b) toward the back wall surface (111) in the dovetail groove (11), and project from the screw holes (311a) and (311b). By pressing the rear wall surface (111) with the screw tip, the protrusion (31) itself is positioned near the front wall surface (112) in the dovetail groove (11), that is, in the vicinity of the groove entrance facing the rear wall surface (111). The inner wall is attracted to the inner wall and pressed against the inner wall so as to be fixed in the dovetail groove (11).

  Subsequently, in a state in which one projecting portion (31) is fixed to the dovetail groove (11) of one frame (1) in this way, the other projecting portion (32) is inserted into its screw hole (321a) (321b). ) Is fastened to the dovetail groove (21) of the other frame (2) by screwing the fastening screws (5a) and (5b) to the other frame (2), and the other frame (2) is attracted to the one frame (1) and directly connected. To complete.

  More specifically, the back wall surface (211) of the dovetail groove (21) is provided with the tapered surface portions (212a) and (212b) as described above. First, on the tapered surface portions (212a) and (212b), The screw tips (51a) and (51b) of the fastening screws (5a) and (5b) protruding from the screw holes (321a) and (321b) come into contact. When the fastening screws (5a) and (5b) are further screwed in this state, the screw tip portions (51a) and (51b) slide along the inclination of the tapered surface portions (212a) and (212b) according to the rotation, and the other protruding portion ( 32) slides in a direction away from one protrusion (31) (in the direction of arrow A in FIG. 1), the other frame (2) approaches one frame (1) (in FIG. 1). It occurs as a movement that attracts in the direction of arrow B). That is, the screwing force with respect to the fastening screws (5a) and (5b) is converted into an attractive force with respect to the other frame (2) through the screw tip portions (51a) and (51b) and the tapered surface portions (212a) and (212b). .

  As a result, the facet of the other frame (2) is pressed firmly against the side surface of the one frame (1), and an accurate right angle connection is realized with high right angle accuracy and right angle strength.

[Second Embodiment]
3 to 6 each illustrate another embodiment of the invention of this application.

  In this embodiment, the structure of the connecting member (3) with the one protrusion (31) and the one frame (1) is the same as that of the first embodiment, but the other frame (2 ) Are provided with hollow portions (22), and screw holes (222a) (222b) of fastening screws (5a) (5b) are provided in the wall plate (221) forming the hollow portions (22). Yes. Further, the other protruding portion (32) of the connecting member (3) is inserted into the hollow portion (22), and the protruding portion (32) itself has a taper in the first embodiment. Tapered surface portions (322a) and (322b) similar to the surface portions (212a) and (212b) are provided.

  More specifically, in this case, the other protrusion (32) of the connecting member (3) has a round bar shape, and the other protrusion (31) of the plate-like protrusion (31) has another frame (2). The one projecting portion (31) is vertically connected and integrated at an appropriate position of the portion facing the fore edge surface. This connection integration is performed by screwing the connection screw (6) into the screw hole (312) provided in one protrusion (31). The connecting screw (6) may be separate from the other protrusion (32) and may be screwed not only into one protrusion (31) but also into the other protrusion (32). Further, it is assumed that it is integrated by projecting to the terminal portion of the other projecting portion (32), and the entire other projecting portion (32) is rotated and screwed into the screw hole (312) of one projecting portion (31). You may do it.

  The other protrusion (32) of the round bar shape is screwed into a screw hole (222a) (222b) provided in the wall plate (221) of the hollow part (22) of the other frame (2) and protrudes therefrom. Tapered surface portions (322a) (322b) that the screw tip portions (51a) (51b) of the fastening screws (5a) and (5b) contacted to attract the other frame (2) to the one frame (1) according to the rotation. Is provided in advance. In the present embodiment, the tapered surface portions (322a) and (322b) are formed in a bowl shape that is easy to slip when the tapered screw tip portions (51a) and (51b) of the fastening screws (5a) and (5b) come into contact with each other. It has an overall shape.

  The other frame (2) connected at right angles to the one frame (1) by the connecting member (3) has a circular cross-section along the longitudinal direction, that is, the round bar-shaped protrusion ( The hollow part (22) of the shape which can just insert 32) is formed. Further, a dovetail groove (21) opened on the side surface is also formed adjacent to the hollow portion (22). The wall plate (221) of the hollow portion (22) is provided with screw holes (222a) (222b). The wall plate (221) partitions the hollow portion (22) and the dovetail groove (21). The wall surface on the dovetail groove (21) side also serves as the back wall surface (211) of the dovetail groove (21).

  In this, as in the first embodiment, the hollow portion of the other frame (2) is inserted in the dovetail groove (11) of one frame (1) while the one protrusion (31) is inserted and fixed. (22) The other protrusion (32) inserted in the hollow portion (32a) is screwed into the tapered surface portions (322a) (322b) from the screw holes (222a) (222b) by screwing the fastening screws (5a) (5b). 22) and the other frame (2) is attracted to one frame (1) to complete the direct connection.

  More specifically, first, the fastening screws (5a) and (5b) are screwed into the screw holes (222a) and (222b) of the hollow portion (22) from the opening portion of the dovetail groove (21), and the screw tip portions (51a ) (51b) is projected from the screw holes (222a) and (222b) and brought into contact with the tapered surface portions (322a) and (322b). When the fastening screws (5a) and (5b) are further screwed in this state, the screw tip portions (51a) and (51b) slide along the inclination of the tapered surface portions (322a) and (322b) according to the rotation, and the other protruding portion ( 32) slides in a direction away from one protrusion (31) (in the direction of arrow A in FIG. 1), the other frame (2) approaches one frame (1) (in FIG. 1). It occurs as a movement that attracts in the direction of arrow B). That is, the screwing force with respect to the fastening screws (5a) and (5b) is converted into an attractive force with respect to the other frame (2) through the screw tip portions (51a) and (51b) and the tapered surface portions (322a) and (322b). .

  As described above, the facet of the other frame (2) is pressed firmly in contact with the side surface of the one frame (1), and an accurate right angle connection with high right angle accuracy and right angle strength is realized.

[Third Embodiment]
7 to 9 each illustrate another embodiment of the invention of this application.

  In this embodiment, the structure of the connecting member (3) with the one projecting portion (31) and the one frame (1) is the same as that of the first and second embodiments. In the embodiment, the tapered surface portions (212a) and (212b) provided in the dovetail groove (21) of the other frame (2) and the other protrusion (32) of the connecting member (3) in the second embodiment. A tapered surface portion (223) similar to the provided tapered surface portions (322a) and (322b) is provided on the wall plate (221) of the hollow portion (22) of the other frame (2). The other protrusion (32) of the connecting member (3) inserted into the portion (22) is provided with a screw hole (323) into which a fastening screw (7) penetrating the tapered surface portion (223) is screwed. . Further, the fastening screw (7) has a tapered surface portion (711) at the screw head (71).

  In this case, further description will be given. First, the other protrusion (32) of the connecting member (3) has a rectangular bar shape, and the other frame (2) of the plate-like protrusion (31) has another one. The one projecting portion (31) is vertically connected and integrated at an appropriate position of the portion facing the fore edge surface.

  The other projecting portion (32) in the shape of a square bar is inserted from the dovetail groove (21) of the other frame (2) and has a tapered surface portion (223) provided on the wall plate (221) of the hollow portion (22). A screw hole (323) into which a fastening screw (7) penetrating the screw is screwed is provided.

  The other frame (2) connected at right angles to the one frame (1) by the connecting member (3) has a hollow portion (22) formed in the longitudinal direction therein. ing. The hollow portion (22) has a cross-sectional shape different from the circular cross-section hollow portion (22) in the second embodiment, and the shape into which the square bar-shaped protrusion (32) can be inserted. It has become. Further, a dovetail groove (21) opened on the side surface is also formed adjacent to the hollow portion (22). The wall plate (221) of the hollow portion (22) is provided with a tapered surface portion (223). The wall plate (221) is an inner wall plate that partitions the hollow portion (22) and the dovetail groove (21). However, the wall surface on the dovetail groove (21) side also serves as the back wall surface (211) of the dovetail groove (21).

  In this case, as in the first and second embodiments, one of the protrusions (31) is inserted into the dovetail groove (11) of one frame (1) and fixed to the other frame (2). The screw hole (323) of the fastening screw (7) passing through the tapered surface (223) of the hollow part (22) from the dovetail groove (21) through the other protrusion (32) inserted into the hollow part (22) of ) Is fixed to the hollow portion (22) by being screwed in, and the other frame (2) is attracted to the one frame (1) to complete the direct connection.

  More specifically, first, the fastening screw (7) is passed from the opening portion of the dovetail groove (21) to the screw hole (323) of the other protruding portion (32) through the tapered surface portion (223) of the hollow portion (22). Screwing, the taper surface portion (711) of the screw head (71) is brought into contact with the taper surface portion (223) of the hollow portion (22). When the fastening screw (7) is further screwed in this state, the taper surface portion (711) slides along the inclination of the taper surface portion (223) according to the rotation, and the other protrusion portion (32) is inserted into one protrusion portion (31). The movement of sliding in the direction away from (the direction of arrow A in FIG. 1) is the movement of attracting the other frame (2) in the direction approaching one frame (1) (the direction of arrow B in FIG. 1). Occur. That is, the screwing force with respect to the fastening screw (7) is converted into an attractive force with respect to the other frame (2) through the tapered surface portion (711) of the screw head (71) and the tapered surface portion (223) of the hollow portion (22). It is.

  As described above, the facet of the other frame (2) is pressed firmly in contact with the side surface of the one frame (1), and an accurate right angle connection with high right angle accuracy and right angle strength is realized.

  In the present embodiment, the connecting member (3) may be provided with another protruding portion (33) slightly parallel to the other protruding portion (32). This protrusion (33) is also connected and integrated perpendicularly to the one protrusion (31) at an appropriate position of the one protrusion (31) facing the facet of the other frame (2). ing.

  And this protrusion part (33) is inserted and inserted in the dovetail groove (21) of another frame (2), and the dovetail groove (21) is screwed into the screw hole (331) provided therein by screwing the connecting screw (8). ) To be fixed.

  Thereby, coupled with the connection effect by the protrusions (31) and (32), an even more accurate right angle connection is realized.

[Fourth Embodiment]
10 and 11 each illustrate another embodiment of the invention of this application.

  In this embodiment, the shape of the connecting member (3) is slightly different from that of the connecting member (3) in the third embodiment, particularly in the hollow part (22) of the other frame (2). The protrusion (32) to be inserted has a round bar shape. In this case, although not shown, the hollow part (22) of the other frame (2) has a round cross-section into which the round bar-like protrusion (32) can be inserted.

  The rest of the configuration is the same as in the third embodiment, and the right angle connection of one frame (1) and the other frame (2) is performed in the same manner, and an accurate right angle connection is realized.

  Of course, the invention of this application is not limited to the above embodiments, and various aspects are possible for details.

  As described in detail above, the invention of this application provides a frame connection structure that can improve the right angle accuracy and the right angle strength in the right angle connection.

(A), (b), and (c) are respectively an internal perspective front view, an internal perspective plan view, and an internal perspective side view as viewed from the other frame side. is there. (A), (b), and (c) are the front views, top views, and side views which illustrated the connection member in embodiment of FIG. 1, respectively. (A), (b), and (c) are respectively an internal perspective plan view illustrating another embodiment of the invention of this application, an internal perspective front view of a right angle connection, and an internal perspective viewed from the other frame side. It is a side view. (A), (b), and (c) are the top views, the front views, and the side views which illustrated the connection member in embodiment of FIG. 3, respectively. (A), (b), and (c) are the top views, the front views, and the side views which illustrated one protrusion part of the connection member in embodiment of FIG. 3, respectively. (A), (b), and (c) are the top views, the front views, and the side views which illustrated the other protrusion part of the connection member in embodiment of FIG. 3, respectively. (A), (b), and (c) are respectively a plan view illustrating still another embodiment of the invention of the present application, an internal perspective side view seen from one frame side, and an internal perspective front view viewed from right angle connection. There is a figure. (A) and (b) are the side views and front views which illustrated the other flame | frame in embodiment of FIG. 7, respectively. (A)-(f) is the top view which illustrated the connection member in embodiment of FIG. 7, respectively, the side view seen from the one frame side, a front view, the side view seen from the other frame side, a front view It is the BB sectional view taken on the line and the AA sectional view. (A)-(d) is the side view, back view, front view, and side view which each illustrated the connection member as another one Embodiment of invention of this application. (A)-(d) is the side view, the top view, the front view, and side view which illustrated the other protrusion part in the connection member of FIG. 2, respectively.

Explanation of symbols

1 One frame 11 Dovetail groove 111 Back wall surface 112 Front wall surface 2 Other frame 21 Dovetail groove 211 Back wall surface 212a, 212b Tapered surface portion 22 Hollow portion 221 Wall plate 222a, 222b Screw hole 223 Tapered surface portion 3 Connecting member 31 Protruding portion 311a, 311b Screw hole 312 Screw hole 32 Protruding part 321a, 321b Screw hole 322a, 322b Tapered surface part 323 Screw hole 33 Protruding part 331 Screw hole 4a, 4b Fastening screw 5a, 5b Fastening screw 51a, 51b Screw tip 6 Fastening screw 7 Fastening screw 71 Screw head 711 Tapered surface part 8 Connection screw

Claims (3)

A frame connection structure for connecting a side surface of one frame and a fore edge surface of another frame at right angles to each other via a connection member,
The connecting member has two protrusions that are perpendicular to each other and are respectively inserted into a dovetail groove provided in one frame and a dovetail groove provided in another frame and fixed with a fastening screw.
The other frame has a tapered surface portion that is in contact with the tip of the screw when tightening the fastening screw on the back wall surface of the dovetail groove and pulls the other frame to the one frame according to the rotation. Frame connection structure to be performed. A frame connection structure for connecting a side surface of one frame and a fore edge surface of another frame at right angles to each other via a connection member,
The connecting member has two protrusions that are perpendicular to each other, inserted into a dovetail groove provided in one frame and a hollow portion provided in another frame, and fixed with a fastening screw, respectively.
The projecting part inserted into the hollow part of another frame and fixed with a screw is a tapered surface part on the outer peripheral surface thereof that makes contact with the tip of the screw when tightening the fastening screw and pulls the other frame to the one frame according to its rotation. A frame connecting structure characterized by comprising: A frame connection structure for connecting a side surface of one frame and a fore edge surface of another frame at right angles to each other via a connection member,
The connecting member has two protrusions that are perpendicular to each other, inserted into a dovetail groove provided in one frame and a hollow portion provided in another frame, and fixed with a fastening screw, respectively.
The other frame has a tapered surface portion that is a wall plate that forms a hollow portion thereof, and the tapered surface portion of the screw head comes into contact when the fastening screw is tightened and pulls the other frame to the one frame according to the rotation. A frame connecting structure characterized by that.

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