Connection structure for tabular bodies

Abstract

To provide a connection structure for tabular bodies which makes disconnection in a connected state hard and further is capable of connecting the other fixture body to one fixture body which is already fixed to an installation surface.SOLUTION: An engagement part and an engaged part are formed at a predetermined interval on an abutment end face 3 of a formation tool unit A1. The engaged part is formed from a fitting groove part 13 including a first insertion opening 13d, which is opened on a surface, and a second insertion opening which is opened in a connection direction. In the engagement part, a pair of divided elastic pieces 12b which is inserted / fitted into the fitting groove part 13 and abutted to a bottom wall plate part 13c extends in the connection direction, and tip end parts can be proximately deformed by elastic deformation. The pair of divided elastic pieces 12b of each formation tool unit A1 can be engaged by being inserted and fitted into the fitting groove part 13 from the first insertion opening 13d of the other formation tool unit A1 by relatively rotating the formation tool units A1 around a rotation center C.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a connecting structure of plate-like bodies that are connected such that the contact surfaces of the back surfaces of two plate-like bodies with respect to the installation surfaces are arranged on the same plane.

Background Art

[0002] Patent Document 1 discloses one of the connecting structures of two plate-like bodies. The plate-like body is a shallow rectangular box shape that is open on the back surface, and an engaging groove forming plate portion (portion with reference numeral 24) is formed in an L shape on the end plate portion (portion with reference numeral 37b) that forms the butting end surface. As a result, an engaging groove is formed between the engaging groove forming plate portion and the end plate portion, and a shallow groove portion (portion with reference numeral 40) into which the connecting portion (portion with reference numeral 33) at the base end of the engaging groove forming plate portion of the other plate-like body to be connected is fitted is formed on the end plate portion. The end plate portion where the shallow groove portion is formed constitutes the engaged plate portion. Then, one of the two plate-like bodies is inverted 180° within the plane of the plate surface, and with the butting end surfaces facing each other, with the axis parallel to the plane of the plate surface at the middle portion between the engaging groove and the engaged plate portion as the rotation center, each plate-like body is relatively rotated by twisting, and the engaged plate portion of one plate-like body is inserted into the engaging groove of the other plate-like body and engaged, whereby the two plate-like bodies are connected.

[0003] Thus, in the connecting structure of the plate-like bodies disclosed in Patent Document 1, in a state where the butting end surfaces of the two plate-like bodies are in contact with each other, by twisting each plate-like body, the engaged plate portion of one plate-like body is inserted into the engaging groove of the other plate-like body to connect the two plate-like bodies. Therefore, it is easy to apply a large engaging force against the sliding contact resistance during engagement, so the connecting operation becomes easy, and the two plate-like bodies can be connected with a strong engaging force.

[0004] To fix two plate-like bodies in a connected state to a wall surface, first connect the two plate-like bodies in advance, and in this connected state, fix the two plate-like bodies to the wall surface. However, due to a misunderstanding, if one of the plate-like bodies is fixed to the wall surface first, it becomes impossible to connect the other plate-like body to the one fixed to the wall surface. Therefore, it is necessary to remove the previously fixed plate-like body and perform the work from the beginning. Also, in the case where the plate-like body is long in the direction in which it separates from the engaging portion or the engaged portion (the direction perpendicular to the butting end face), the work of connecting the plate-like body while twisting it becomes difficult because the holding of the plate-like body becomes unstable.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] An object of the present invention is to provide a connecting structure for plate-like bodies that enables easy connection work, obtains a large engaging force, makes it difficult to separate in the connected state, and enables the connection of the other fixed body to the fixed body of one side that has already been fixed to the installation surface.

Means for Solving the Problems

[0007] The invention according to claim 1 for solving the above problems is as follows: In the vicinity of the butting end face of the plate-like body, an engaging portion and an engaged portion having an engagable relationship are formed at a predetermined interval by virtually arranging one of them to be reversely disposed by 180° within the plane of the plate surface and facing each other. One of the two plate-like bodies is inverted by 180° within the plane of the plate surface, and the two plate-like bodies are relatively rotated in a state where the butting end faces are opposed to each other, so that the engaging portion and the engaged portion of one plate-like body are engaged with the engaged portion and the engaging portion of the other plate-like body, and the two plate-like bodies each having a contact surface against the installation surface on the back surface are connected such that the respective contact surfaces are arranged on the same plane. With the contact surfaces of the respective plate-like bodies to be connected intersecting, the butting end faces are brought into contact with each other, and with the intermediate portion between the engaging portion and the engaged portion of one plate-like body as the rotation center, the respective plate-like bodies are rotated in a predetermined direction so that the engaging portion and the engaged portion of one plate-like body can be engaged with the engaged portion and the engaging portion of the other plate-like body. Moreover, by relatively approaching the respective plate-like bodies to be connected with their respective contact surfaces arranged on the same plane and bringing the butting surfaces into contact with each other, the engaging portion and the engaged portion of one plate-like body can be engaged with the engaged portion and the engaging portion of the other plate-like body.

[0008] In the invention of claim 1, in the vicinity of the butting end face of the plate-like body, an engaging portion and an engaged portion in an engagable relationship are formed with a predetermined interval therebetween by virtually arranging them to face each other by inverting one of them by 180° within the plane of the plate surface. Therefore, when one of the two plate-like bodies to be connected is inverted by 180° within the plane of the plate surface so that the respective butting end faces face each other, the total of four engaging portions and engaged portions formed in the vicinity of the butting end faces of each plate-like body are arranged point-symmetrically with the engaging portion of one plate-like body and the engaged portion of the other plate-like body facing each other. In this state, there are two methods for integrally connecting the two plate-like bodies. One of them is that with the abutting surfaces on the back surfaces of the respective plate-like bodies to be connected intersecting, the respective butting end faces are brought into contact, and with the rotation center parallel to the plate surface at the intermediate portion between the engaging portion and the engaged portion of one plate-like body as the center, when twisted and rotated in the direction in which the respective abutting surfaces on the back surfaces of the respective plate-like bodies match, the engaging portion and the engaged portion of one plate-like body are engaged with the engaged portion and the engaging portion of the other plate-like body, and the two plate-like bodies are integrally connected in a state where the respective abutting surfaces on the back surfaces match. The other one is that with the respective plate-like bodies to be connected relatively close to each other with the respective abutting surfaces on the back surfaces arranged on the same plane and the respective butting end faces brought into contact, the engaging portion and the engaged portion of one plate-like body are engaged with the engaged portion and the engaging portion of the other plate-like body, whereby the respective plate-like bodies are integrally connected. Hereinafter, the former connection method is referred to as the "twisting connection method", and the latter connection method is referred to as the "butting connection method".

[0009] Thus, according to the invention of claim 1, when fixing the two plate-like bodies in a connected state with respect to the installation surface, there are two types as described above, namely the "twisting connection method" and the "butting connection method". Therefore, the operator has the advantage of being able to select either of the two connection methods that he or she is good at. Also, even when only one of the plate-like bodies is fixed to the installation surface by forgetting to connect the respective plate-like bodies before fixing to the installation surface, it is possible to integrally connect them by bringing the other plate-like body close to the already fixed one. Thus, unlike the conventional connection structure, it is not necessary to remove the already fixed one of the plate-like bodies, and the work efficiency is improved.

[0010] The invention of claim 2 is based on the invention of claim 1, in which The engaged portion is formed by a fitting groove portion having a first insertion opening opened in at least one of the contact surfaces of the front surface or the back surface, and a second insertion opening opened in the connecting direction. The engaging portion is inserted and fitted into the fitting groove portion, and a pair of elastic pieces that abut against the bottom surface thereof extend along the connecting direction, and the tip ends thereof can be deformed closer by elastic deformation. A pair of elastic pieces of each plate-like body to be connected are inserted and fitted into the fitting groove portion from the first insertion opening of the other plate-like body by relative rotation of each plate-like body around the intermediate portion, and can be engaged. At the same time, a pair of elastic pieces of each plate-like body are elastically deformed so that the tip ends approach each other by relatively approaching each plate-like body, and are inserted into the fitting groove portion from the second insertion opening of the other plate-like body and restored to the original shape, so that they can be engaged.

[0011] According to the invention of claim 2, since the engaged portion formed in the vicinity of the butting end surface of each plate-like body is formed by a pair of elastic pieces extending in the connecting direction, and each tip end can be deformed closer by elastic deformation, the width of the pair of elastic pieces can be designed in a tapered shape along the connecting direction so as to gradually increase (widen) from the base end portion to the tip end portion, and the shape of the fitting groove portion of the mating plate-like body that is the engaging portion can be designed in a tapered shape along the connecting direction corresponding to the shape of the pair of elastic pieces when not deformed.

[0012] Therefore, to connect each plate-like body by the "twisting connection method", with the abutting surfaces on the back surfaces of the plate-like bodies to be connected crossed and the butting end faces in contact, when each plate-like body is twisted and rotated in a predetermined direction around the rotation center, a pair of elastic pieces in a non-deformed state that constitute the engaged portion are inserted into the first insertion opening of the fitting groove portion that constitutes the engaging portion of the other plate-like body while maintaining their original shapes, and are engaged with the fitting groove portion, and the plate-like bodies are connected to each other. Further, to connect each plate-like body by the "butting connection method", with the abutting surfaces of the plate-like bodies to be connected arranged on the same plane and the plate-like bodies relatively approximated to bring the butting end faces into contact, a pair of elastic pieces formed on each plate-like body are inserted through the second insertion opening of the fitting groove portion formed opposite to the pair of elastic pieces on each plate-like body with the tip portions being deformed by approaching. After complete insertion, the pair of elastic pieces whose tip portions were deformed by approaching are restored to their original shapes and are fitted into the fitting groove portion of the other party, and the plate-like bodies are connected to each other. In any of the connection methods, in the connected state, a pair of fitting elastic pieces formed in a similar tapered shape are inserted and fitted into the fitting groove portion of one of the plate-like bodies formed in a tapered shape along the connection direction, so that the connected pair of plate-like bodies cannot be easily separated along the connection direction, and a large connection force is obtained.

Advantages of the Invention

[0013] According to the present invention, there are two types, the "twisting connection method" and the "butting connection method", for connecting each plate-like body. Therefore, an operator can select the method that he or she is good at and perform the work, expanding the options for the connection work. Further, even if only one of the plate-like bodies is fixed to the installation surface by forgetting to connect the plate-like bodies before fixing to the installation surface, it is possible to connect them integrally by bringing the other plate-like body close to the fixed plate-like body and bringing the butting end faces into contact. Therefore, there is no need to remove the fixed plate-like body as in the conventional connection structure, and the work efficiency is improved.

Brief Description of the Drawings

[0014]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Embodiments for Carrying out the Invention

[0015] Hereinafter, an example of implementing the present invention for the cross pipe forming tool A will be given, and the present invention will be described in more detail. The cross pipe forming tool A is the cross pipe part P of the hot water supply pipe P1 and the water supply pipe P2 that are arranged in parallel. 12(see Fig. 8) is formed to enable piping. As shown in Figs. 1 to 5, one of a pair of forming tool units A1 having the same rectangular shape in plan view is rotated by half a turn in plan view, and in a state where the pair of forming tool units A1 are arranged point-symmetrically, one butting end face 3 along the longitudinal direction is butted against each other and connected, thereby forming a short plate-shaped member having a length twice that of the forming tool unit A1. Side walls 2 are formed in the longitudinal direction at both ends in the width direction of the substrate portion 1, and the end faces on the connection side in the substrate portion 1 are butting end faces 3 that are butted against each other during connection. A plurality of screw insertion holes 4 through which screws 31 for fixing the substrate portion 1 to the installation surface E can be inserted are formed in the substrate portion 1. The back surface of the substrate portion 1 is a contact surface 1a (see Figs. 1(b) and 4(b)) that contacts the installation surface E such as a wall surface. In each figure, 5 indicates a standing wall portion erected from the substrate portion 1 in order to contact the bending start portions of the cross-piped hot water supply pipe P1 and the water supply pipe P2, and 6 indicates a pipe pressing portion that covers a portion close to the bending start portion of the water supply pipe P2 piped on the upper side in 12 the cross-piping portion P from above.

[0016] On the butting end face 3 at one end in the longitudinal direction of the substrate portion 1, a positioning connection portion 11 for connecting the pair of forming tool units A1 to each other is integrally formed in a state where the positions of the pair of forming tool units A1 arranged point-symmetrically are stopped along the width direction of each other by rotating one of the pair of forming tool units A1 by half a turn within the plate surface. The positioning connection portion 11 includes a fitting elastic piece 12 protruding from the butting end face 3 of one of the pair of forming tool units A1 and a fitting groove portion 13 formed facing the butting end face 3 of the other and into which the fitting elastic piece 12 is fitted, which form a set. In addition, a fitting elastic piece 12 protruding from the butting end face 3 of the other forming tool unit A1 and a fitting groove portion 13 formed facing the butting end face 3 of the one forming tool unit A1 and into which the fitting elastic piece 12 of the other forming tool unit A1 is fitted form another set. It is composed of a total of two sets of combinations of the fitting elastic pieces 12 and the fitting groove portions 13.

[0017] Therefore, on the portion of the butting end face 3 of the substrate portion 1 of the forming tool unit A1, a fitting elastic piece 12 and a fitting groove portion 13 are formed at a predetermined interval along the width direction of the substrate portion 1. The fitting groove portion 13 has an upper surface and each side of the butting end face 3 opened, and is composed of a pair of longitudinal wall plate portions 13a, a width direction wall plate portion 13b, and a bottom wall plate portion 13c erected on the substrate portion 1. The fitting elastic piece 12 is formed in a portion raised from the substrate portion 1 to a position at the same height as the bottom wall plate portion 13c of the fitting groove portion 13 by a raised portion 14 (see FIG. 5(b)). The upper surface opening of the fitting groove portion 13 functions as a first insertion opening portion 13d for inserting the fitting elastic piece 12 of the other party when connecting a pair of forming tool units A1 by the "twisting connection method", and the opening along the connection direction of the fitting groove portion 13 functions as a second insertion opening portion 13e for inserting the fitting elastic piece 12 when connecting a pair of forming tool units A1 by the "butting connection method".

[0018] Only the base end portion of the fitting elastic piece 12 is integrated, and the remaining portion except the base end portion is composed of a pair of divided elastic pieces 12b that are line-symmetric in the width direction by forming a deformation allowance gap 12a along the length direction in the central portion in the width direction. The pair of divided elastic pieces 12b are formed in a tapered shape so as to gradually widen from the base end to the tip, and are elastically deformable so that the width becomes narrower due to the existence of the deformation allowance gap 12a. The fitting groove portion 13 has a planar shape corresponding to the outer shape of the fitting elastic piece 12 during non-elastic deformation, and has a tapered shape in which its width gradually widens from the butting end face 3 toward the back side, and its depth is larger due to the height dimension of the fitting elastic piece 12, and the entire fitting elastic piece 12 is fitted into the fitting groove portion 13.

[0019] Therefore, as shown in FIG. 1, when one of the pair of single forming tools A1 is rotated half a turn within the plane of the board surface of the board part 1, the fitting elastic pieces 12 and the fitting groove parts 13 respectively formed at four locations in the vicinity of the butting end face 3 of each single forming tool A1 are arranged point-symmetrically, and the fitting elastic piece 12 of one single forming tool A1 and the fitting groove part 13 of the other single forming tool A1 are arranged opposite to each other. In this state, to connect each single forming tool A1 by the "twisting connection method", the butting end faces 3 of each single forming tool A1 are butted against each other to make them contact each other, and moreover, with the contact surfaces 1a on the back surface of the board part 1 of each single forming tool A1 intersecting, in the state where each single forming tool A1 is arranged, with the intersecting part of each board part 1 of each single forming tool A1, which is the middle part between the fitting elastic piece 12 and the fitting groove part 13, as the rotation center C, when each single forming tool A1 is relatively rotated in the direction in which each contact surface 1a forms the same plane, the fitting elastic pieces 12 formed on each single forming tool A1 remain in their original shapes and are inserted and fitted into the fitting groove parts 13 through the first insertion openings 13d of the other single forming tools A1, the contact surfaces 1a on the back surfaces of each board part 1 are arranged on the same plane, and each single forming tool A1 is connected to each other to form the cross-piping part forming tool A.

[0020] In this connected state, since the tapered fitting elastic piece 12, whose width changes so that the tip part in the connection direction gradually widens, is fitted into the fitting groove part 13 with a corresponding shape, it can counteract the separating force in the connection direction of each single forming tool A1 and is not easily separated by the said separating force. In addition, if for some reason it becomes necessary to separate the pair of single forming tools A1 connected to each other, the pair of connected single forming tools A1 may be rotated in the direction opposite to the twisting rotation in the "twisting connection method" to let each fitting elastic piece 12 escape from each fitting groove part 13.

[0021] In addition, to connect a pair of single forming tools A1 by the "butt joint connection method", as shown in FIGS. 6 and 7, the fitting elastic pieces 12 and the fitting groove portions 13 that constitute the positioning connection portions 11 of the respective single forming tools A1 face each other, that is, the respective single forming tools A1 are arranged in series with their respective butting end faces 3 facing each other, and are relatively brought close to each other as they are. When the fitting elastic piece 12 of one single forming tool A1 is pushed into the fitting groove portion 13 through the second insertion opening 13e of the other single forming tool A1, the pair of split elastic pieces 12b that constitute each fitting elastic piece 12 elastically deform and approach each other, and after being inserted into the fitting groove portion 13, they restore to their original shapes. Thus, the fitting elastic piece 12 of the other single forming tool A1 is inserted and fitted into the fitting groove portion 13 of one single forming tool A1, and each single forming tool A1 is integrally connected in a state of being arranged in series. Since the widths of the fitting elastic piece 12 and the fitting groove portion 13 formed in the single forming tool A1 are tapered along the connection direction, in the connected state of each single forming tool A1, the connected single forming tools A1 do not separate unless a separation force equal to or greater than a certain value is applied along the connection direction.

[0022] As shown in FIG. 8, the cross-pipe portion forming tool A in which a pair of single forming tools A1 are connected in series crosses two hot water supply pipes P1 and a water supply pipe P2, and by bringing the bending start portions thereof into contact with the standing wall portion 5, the bending shapes of the hot water supply pipe P1 and the water supply pipe P2 are maintained. In FIG. 8, V1 indicates the base of the pipe protection cover for arranging the hot water supply pipe P1 and the water supply pipe P2 in parallel piping.

[0023] Note that the above embodiment is applied to the connection of each plate-shaped single forming tool A1 that constitutes the cross-pipe portion forming tool A having a two-split structure. Although the single forming tools connected to each other have the same shape, it is of course possible to connect plate-like bodies having different shapes, and it is of course applicable to the connection of two other plate-like bodies other than the above-described cross-pipe portion forming tool.

Explanation of Reference Numerals

[0024] A: Cross-pipe portion forming tool A1: Single forming tool (plate-like body) C: Rotation center 1: Substrate portion 1a: When the joint surface 3: Butt end face 11: Positioning connection part 12: Fitting elastic piece (engaged part) 12a: Deformation allowance gap 12b: Split elastic piece 13: Fitting groove part (engaging part) 13c: Bottom wall plate part 13d: First insertion opening 13e: Second insertion opening

Claims

1. In the vicinity of the butting end face of the plate-like body, an engaging portion and an engaged portion having an engagable relationship are formed at a predetermined interval by virtually arranging them to face each other by reversing one of them by 180° within the plate surface. With one of the two plate-like bodies reversed by 180° within the plate surface and the respective butting end faces facing each other, by relatively rotating the two plate-like bodies, the engaging portion and the engaged portion of one plate-like body are engaged with the engaged portion and the engaging portion of the other plate-like body, and the two plate-like bodies having contact surfaces for the installation surface on the back surface are connected such that the respective contact surfaces are arranged on the same plane. It is a connecting structure of plate-like bodies, With the contact surfaces of the respective plate-like bodies to be connected intersecting, the respective butting end faces are brought into contact, and with the intermediate portion between the engaging portion and the engaged portion of one plate-like body as the rotation center, the respective plate-like bodies are rotated in a predetermined direction so that the engaging portion and the engaged portion of one plate-like body can be engaged with the engaged portion and the engaging portion of the other plate-like body. Moreover, by relatively approaching the respective plate-like bodies to be connected with their respective contact surfaces arranged on the same plane and bringing the respective butting surfaces into contact, the engaging portion and the engaged portion of one plate-like body can be engaged with the engaged portion and the engaging portion of the other plate-like body. A connecting structure of plate-like bodies is characterized by this.

2. The engaged portion is formed by a fitting groove portion having a first insertion opening opened at at least one of the contact surfaces of the front surface or the back surface and a second insertion opening opened in the connecting direction. The engaging portion is inserted and fitted into the fitting groove portion, and a pair of elastic pieces that abut against the bottom surface thereof extend along the connecting direction, and the respective tip portions can be deformed and approached by elastic deformation. A pair of elastic pieces of each plate-like body to be connected can be inserted and fitted into the fitting groove portion from the first insertion opening of the other plate-like body and engaged by the relative rotation of the respective plate-like bodies with the intermediate portion as the rotation center. At the same time, a pair of elastic pieces of each plate-like body are elastically deformed so that the tip portions approach each other by relatively approaching the respective plate-like bodies, and are inserted into the fitting groove portion from the second insertion opening of the other plate-like body and restored to the original shape, so that they can be engaged. The connecting structure of plate-like bodies according to Claim 1, characterized by this.

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