JP4175263B2 - Frame connection structure - Google Patents

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 a frame connection 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 connection member, While having a first protrusion and a second protrusion perpendicular to each other, respectively inserted into a dovetail groove provided in one frame and a hollow part provided in another frame and fixed with a fastening screw, Parallel to the second protrusion, the third protrusion is arranged perpendicular to the first protrusion, and the first protrusion is inserted into a dovetail groove of one frame and fixed with a fastening screw. The second protrusion is inserted into a hollow portion of another frame and fixed with a fastening screw, and the other frame is a taper of a screw head when the fastening screw is tightened by a wall plate forming the hollow portion. The frame comes into contact with the other frame according to its rotation And has a tapered surface to attract the one frame, adjacent to the hollow portion has a dovetail grooves that are partitioned by a wall plate, the third projecting portion is fixed by the connecting screws are fitted in the dovetail groove It is characterized by that.

According to the invention of this application, by using the connecting member as described above and providing the tapered surface portion as described above in the hollow portion of the other frame, the first protruding portion of the connecting member can be provided. In the dovetail of the frame, the second protrusion is inserted and fixed in the hollow part, and another frame is attracted to the one frame by tightening the fastening screw with the taper surface of the screw head in contact with the taper surface Thus, the frames can be connected at a right angle with higher right angle accuracy and right angle strength than in the prior art.

[First Reference Form]
FIGS. 1 and 2 each show a reference form of a frame connection structure of the invention of this application.

In this reference embodiment, the connecting member (3) for connecting the 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 ) (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 this reference embodiment, a tapered surface portion (212a) (212b) is tapered screw tip (51a) (51b) is conical easily slides during the rotation in contact with the fastening screw (5a) (5b) 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 this reference 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 Reference Form]
3 to 6 each illustrate another reference form of the frame connection structure of the invention of this application.

In this reference embodiment, the configuration of the one of the projecting portion of the connecting member (3) (31) and one frame (1) has a ones as in the first referential embodiment, 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 reference 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 this reference embodiment, a tapered surface portion (322a) (322b) is tapered fastening screw (5a) (5b) threaded tip (51a) (51b) is conical easily slides during the rotation in contact with 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, the hollow part of the other frame (2) with one projecting part (31) inserted and fixed in the dovetail groove (11) of one frame (1) as in the first reference embodiment. (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.

First Embodiment
7 to 9 each illustrate one embodiment of the frame connection structure of the invention of this application.

In the present embodiment, the configuration of one projecting portion (31) as the first projecting portion of the connecting member (3) and one frame (1 ) are the same as those in the first and second reference embodiments. However, in the first reference embodiment, the tapered surface portions (212a) (212b) provided in the dovetail grooves (21) of the other frame (2) and the second of the connecting member (3) in the second reference embodiment. A taper surface portion (223) similar to the taper surface portions (322a) and (322b) provided on the other protrusion portion (32) as the protrusion portion of the other frame (2) is a wall plate of the hollow portion (22). Fastening screw (7) which penetrates taper surface part (223) in other protrusion part (32) of connecting member (3) provided in (221) and inserted in the hollow part (22) There is a screw hole (323) for screwing Yes. 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.

Other frames (2) connected at right angles with respect to one frame (1) by the above connecting member (3) is a one whose middle hollow portion along the longitudinal direction in the interior (22) is formed ing. The hollow portion (22) has a cross-sectional shape different from the circular cross-sectional hollow portion (22) in the second reference embodiment, and a 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, in the same manner as in the first and second reference embodiments, one of the protrusions (31) is inserted and fixed in the dovetail groove (11) of one frame (1), and 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). 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 protrusion (33) that is parallel to the other protrusion (32) and is slightly shorter than the other protrusion (32) as the third protrusion . 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.

Second Embodiment
10 and 11, respectively, is an illustration of a further implementation form of frame connecting structure 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 first embodiment, and particularly in the hollow portion (22) of the other frame (2). The protrusion (32) as the second protrusion 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.

Other configurations are the same as the first embodiment, a right angle connection of one frame (1) and the other frame (2) is also performed in the same manner, 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 capable of improving the right angle accuracy and the right angle strength in the right angle connection.

(A), (b), and (c) are respectively seen from the internal perspective front view, the internal perspective plan view, and the other frame side of the right angle connection that exemplifies one reference form of the frame connection structure of the invention of this application. FIG. (A), (b), and (c) are the front view, the top view, and the side view which illustrated the connection member in the reference form of FIG. 1, respectively. (A) (b) (c ) , respectively, internal perspective plan view illustrating another REFERENCE form of a frame connection structure of the invention of this application, the internal perspective front view and views the right angle connection and other frame side FIG. (A), (b), and (c) are the top view, front view, and side view which illustrated the connection member in the reference form of FIG. 3, respectively. (A) (b) (c) is the top view which illustrated one protrusion part of the connection member in the reference form of FIG. 3, respectively, the front view, and the side view. (A) (b) (c) is the top view, front view, and side view which illustrated the other protrusion part of the connection member in the reference form of FIG. 3, respectively. (A), (b), and (c) are respectively a plan view illustrating an embodiment of the frame connection structure of the invention of the present application, an internal perspective side view seen from one frame side, and an internal perspective viewed from right angle connection. There is a front view. (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) are each illustrated side view a connecting member according to another implementation form of the frame connection structure of the invention of this application, back view, there a front view and a side view. (A)-(d) is the side view which illustrated the other protrusion part in the connection member of FIG. 10 , respectively, a top view, a front view, and a side view.

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 Taper 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 (1)

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 is inserted into a dovetail groove provided in one frame and a hollow portion provided in another frame, and is fixed by a fastening screw, and is perpendicular to each other, the first protrusion and the second protrusion And a third protrusion arranged in parallel with the second protrusion and perpendicular to the first protrusion, and the first protrusion is inserted into the dovetail of one frame. It is fixed with a fastening screw, and the second protrusion is inserted into a hollow portion of another frame and fixed with a fastening screw ,
The other frame is a wall plate that forms a hollow portion thereof, and has a tapered surface portion that comes into contact with the tapered surface portion of the screw head when the fastening screw is tightened and pulls the other frame to the one frame according to the rotation. A frame connecting structure characterized in that it has a dovetail groove adjacent to the wall and partitioned by a wall plate , and the third protrusion is fitted in the dovetail groove and fixed with a connecting screw .

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