JP2004205032A - Member connection device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a member connection device capable of providing a sufficient clamping force even if the wall thickness of pipe members is thin when the pipe members are fixed to each other. <P>SOLUTION: This member connection device is used to connect a first member 5 having a pair of opposed walls 53 and 53 to a second member 31 having a pair of opposed walls 311 and 311. The device is provided with a first bridged material 81 installed across the opposed walls 53 and 53 at the specified position of the first member 5, a second bridged material 82 installed across the opposed walls 311 and 311 at the specified position of the second member 31, and a pulling means 6 pulling the first bridged part 81 and the second bridged part 82 closely to each other. The first member 5 and the second member 31 are pressingly connected to each other with a pulling force by the pulling means 6. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a member connecting device used for connecting members having a pair of opposed walls, such as a pipe member and a channel member.
[0002]
[Prior art]
BACKGROUND ART Conventionally, when joining hollow members by tightening them with screws or the like, for example, like a pipe member, as shown in Patent Literature 1, outer walls of superposed hollow members having different external dimensions are separated from each other. Are tightened with screws.
[0003]
Alternatively, the outer dimensions of the hollow members are the same, and an inner member inserted into the other hollow member from the one hollow member is provided so as to protrude, and the outer wall of the one hollow member and the inner member of the other hollow member are provided at the insertion position. And the like.
[0004]
[Patent Document 1]
JP-A-5-146316
[0005]
[Problems to be solved by the invention]
However, unlike the former case where the walls that are separated from each other are fastened, unlike the case where the closely adhered walls are fastened, the tightening force acts to dent the wall in the thickness direction, so that the rigidity in the thickness direction of the wall is increased. Can not be tightened beyond. Therefore, when the thickness of the wall is thin, sufficient fastening force cannot be obtained, and it may be difficult to reliably fix the members. Also, due to tolerances between the screw holes provided on the wall and the screws, processing errors in the screw holes, and the like, some looseness may occur in the connection state.
[0006]
On the other hand, in the case of the latter, there is a similar disadvantage that a slight backlash is generated in the connection state, and due to this, a preferable connection state in which the end faces of the hollow members are butted together cannot be obtained (that is, the end face cannot be obtained). Inadvertent gaps may occur at the butted portions of the two).
[0007]
Therefore, according to the present invention, when the pipe members and the like are fixed to each other, a sufficient tightening force can be obtained even when the wall thickness is small, and the end surfaces of the pipe members can be securely fixed as necessary without rattling. It is an object of the present invention to provide a member connecting device that enables the member to be brought into close contact with the member.
[0008]
[Means for Solving the Problems]
That is, the member connecting device according to the present invention is for connecting a first member having a pair of opposing walls and a second member having a pair of opposing walls, wherein the first member A first bridge spanned or interposed between the opposing walls at a predetermined location of the second member; a second bridge spanned or interposed between the opposing walls at a predetermined location of the second member; A pulling means for pulling the material and the second frame in directions that are close to each other, wherein the first member and the second member are pressed and coupled by the pulling force of the pulling means. .
[0009]
In such a case, when the first member and the second member are drawn by the drawing means, the force acts along the face plate direction of the opposing wall via the first and second bridge members. . Therefore, the drawing force of the drawing means does not act to depress the wall in the thickness direction, and the first and second members are made of a relatively thin material as compared with the conventional fastening means. Thus, the members can be sufficiently pressed and fixed to each other. Here, the opposing walls need not be parallel to each other, but include, for example, opposing walls of a round pipe. Further, since the pulling force is applied along the direction of the face plate of the opposing wall to press and join the members together, the pulling force becomes the pressing force as it is, and the cause of rattling is eliminated. It becomes.
[0010]
Further, a member connecting device according to the present invention is for connecting a first member and a second member, and includes a positioning unit protrudingly provided at a predetermined position of the first member; A first fixing portion having a screw hole provided in the protruding portion, a second fixing portion having a screw insertion hole provided at a predetermined position of the second member, and connecting the first fixing portion and the second fixing portion with a screw; And a pulling means for pulling the first member by screwing the first member with a line connecting the first fixing portion and the second fixing portion. And the second member are set so as to generate a component force to slide the member along the contact surface thereof, and the positioning means restricts the sliding movement, thereby positioning the first member and the second member. It is characterized by acting.
[0011]
With such a structure, the first member and the second member are brought into close contact with each other due to the pulling force, and at the same time, slide along the contact surface between the first member and the second member. When a force is generated, the positioning means restricts the sliding movement at a predetermined location, and the positioning operation between the first member and the second member can be reliably performed. In this case, the first member and the second member can be securely brought into close contact with a predetermined position and joined. In addition, since the projection of the positioning means can be set to be thick, the female screw can be set longer by providing the first fixing portion on the projection. By doing so, the pulling force of the pulling means by screwing the screws can be made more reliable.
[0012]
Further, since the first member and the second member have a slip stopper corresponding to a force in a direction substantially orthogonal to the sliding force, the slip stopper limits a shifting action substantially orthogonal to the sliding force. The first member and the second member may be configured so that the positioning operation is reliably performed. With this configuration, the first member and the second member can be securely brought into close contact with a predetermined position and joined.
[0013]
When applied in a mode in which adjacent second members are connected to each other via the first member in the first member, it is preferable when the connection strength between the second members is improved without difficulty and the connection portion bends. As a mode, the first member is provided with a pair of contact surfaces that are slightly inclined in a direction in which the first members are opposed to each other and are directed downward, and the contact surface is pressed against the end surface of the second member to thereby form the second member. One that couples members can be mentioned.
[0014]
In order to be able to perform positioning in a direction orthogonal to the longitudinal direction in joining the first member and the second member, the second member is a pipe member, and the first member is connected to the second member. A pipe-shaped outer member having a cross-sectional contour conforming thereto, and an inner member protruding outward from each end face of the outer member, wherein each end face of the outer member is the contact surface, and the projecting portion of the inner member is provided. Is preferably fitted into the end of the second member so as to connect the first member and the second member. With this configuration, the inner member functions as the positioning unit and the slippage preventing unit, so that the contact surface and the end surfaces of both members can be securely brought into close contact with each other without a gap and can be joined.
[0015]
Further, as a specific mode for ensuring the positioning together with the connection, as described above, the first frame member and the second frame member or the first fixing portion and the second fixing portion are connected. If the line is set so as not to be orthogonal to the contact surface in side view, if a component force for sliding the contact surface and the end surface is generated by the pulling force, the outer peripheral surface of the inner member is formed by the sliding force. The inner peripheral surface of the second member is in close contact with the first member, and the positioning of the first member and the second member is performed.
[0016]
In order to allow the operation of the drawing means to be appropriately performed from the outside, the first member and the second member are arranged so that their connection directions are substantially aligned in the horizontal direction, and are provided on the first member. It is preferable that the line connecting the first frame member and the second frame members provided on the respective second members located on both sides of the first frame member is set to have a C shape in a side view.
[0017]
In order to effectively prevent the first member and the second member from opening under their own weight or overload below the connection boundary portion, the first member and the second member are formed by forming a C-shaped line in a side view. Is preferably set in the lower half region in the up-down direction in FIG.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0019]
The member connecting device according to the present embodiment is applied to the table 1 shown in FIG. 1 and the like. The table 1 includes a top plate 2, a main frame 3 mainly supporting the top plate 2, and legs 4 supporting the main frame 3 at both ends.
[0020]
As shown in FIGS. 1 to 3, the top plate 2 is formed by abutting a pair of top plate elements 21 having a rectangular plate shape in the depth direction, and arranging a plurality of these along the longitudinal direction of the top plate element 21. Things. A side frame 22 and an auxiliary frame 23 are attached to the lower surface of each top plate element 21 in order to improve rigidity. The side frame 22 has a square pipe shape provided along one long side of the top plate element 21 at a predetermined distance inward therefrom. A plurality of (three in this embodiment) auxiliary frames 23 are arranged between the side frames 22, extend in a direction orthogonal to the longitudinal direction of each top plate element 21, and connect the pair of top plate elements 21. It has the shape of a square pipe.
[0021]
The main frame 3 extends in the longitudinal direction of the top plate 2 and is formed by connecting a plurality of main frame elements 31 each having a vertically long rectangular pipe shape in series. In the present embodiment, the main frame 3 is provided one by one in the vicinity of the boundary between the pair of top plate elements 21 that abut each other, but as a whole, a plurality (two) are provided in the center of the top plate 2 in parallel. It is. A spacer frame 32 for improving rigidity and setting a separation distance is intermittently attached to a required portion between the main frames 3. The main frame element 31 has substantially the same length as the longitudinal dimension of the top plate element 21, and is disposed below the top plate element 21 so as to correspond to each top element 21.
[0022]
The legs 4 are arranged at both left and right ends of the top plate 2. Each leg 4 connects a pair of square pipe-shaped leg elements 41 to each other at the upper end thereof. It comprises a horizontal member 42 in the form of a square pipe, and an adjuster (not shown) attached to the lower surface of the leg element 41. An end of the main frame 3 is joined to the inner surface of the central portion of the horizontal member 42, and the legs 4 and the main frame 3 allow the top plate supporting structure to be independently self-standing as shown in FIG. 7 are formed.
[0023]
The table 1 is of a type in which the length can be changed by increasing or decreasing the number of the main frame elements 31 and the top plate elements 21.
[0024]
Further, in the table 1, in a state where the top plate 2 is not placed on the top plate support structure 7, that is, in a load non-operation state in which a load is not applied or substantially not applied by the top plate 2, as shown in FIG. The main frame 3 is configured so that the central portion of the top plate support surface 3a is in a swelling mode P in which the center portion of the top plate support surface 3a bulges upward from both end portions thereof. In the loaded load acting state, the top plate support surface 3a is configured to be flush or substantially flush by the bending of the main frame 3 due to the load.
[0025]
Specifically, the main frame 3 is bent at a connecting portion between the adjacent main frame elements 31 so as to be in the swelling mode P, so that the main frame 3 forms a part of a partial polygon in a side view. ing. That is, as shown in FIGS. 5, 6, and 7, adjacent main frame elements 31 are connected to each other via the connecting members 5 at the connecting portions.
[0026]
The connecting member 5 includes a pipe-shaped outer member 51 having a cross-sectional profile conforming to the main frame element 31, and an upwardly opening channel-shaped inner member 52 fitted into the inner periphery of the outer member 51 and joined by welding or the like. It is provided with. The inner member 52 protrudes outward from each end face 51a of the outer member 51. The thickness of the inner member 52 is larger than the thickness of the outer member 51, and the rigidity and strength for connecting the main frame elements 31 to each other are set. Is secured. The outer member 51 has a role as a contact surface 51a against which the end surface 31a of the main frame element 31 is pressed against each end surface. It is slightly inclined in the direction to approach. The protruding portion of the inner member 52 is fitted into the end of the main frame element 31, and the end face 31a of the main frame element 31 is configured to bend at the end by applying the end face 31a of the main frame element 31 to the contact surface 51a. The end face 31a of the main frame element 31 is set to be perpendicular to the longitudinal direction. The protruding portion of the inner member 52 is fitted to the end of the main frame element 31 at least in the width direction without play.
[0027]
The table 1 is assembled as follows.
[0028]
First, the main frame element 31 is connected to form the main frame 3, and the horizontal member 42 of the leg 4 is attached to each end of the main frame 3, and the top plate supporting structure 7 which can stand independently and independently is provided. Form. In this state, as shown in FIG. 4, the central portion of the top plate supporting surface 3a of the main frame 3 is in a swelling mode P in which the center portion swells above both end portions.
[0029]
Then, the top plate element 21 is placed and fixed above the top plate support structure 7. The side frame 22 and the auxiliary frame 23 are attached to the top plate element 21 at an appropriate time. When the top plate elements 21 are placed, they are arranged so that a slight gap is formed between adjacent top plate elements 21. Thus, the main frame 3 is bent by the load on which all the top plate elements 21, that is, the top plate 2, are placed, and the top plate supporting surface 3 a of the main frame 3 is in a flush or substantially flush state Q. As a result, the top surface 2a is also flat. At this time, the gap between the top plate elements 21 is also eliminated, and the top plate elements 21 are fastened so as to be in close contact with each other without any gap.
[0030]
Thus, in the present embodiment, the member connecting device 8 described below is used for connecting the connecting member 5 as the first member and the main frame element 31 as the second member.
[0031]
The member connecting device 8 includes a first frame 81 bridged between opposed walls 53 facing each other in the depth direction at a predetermined location S1 of the connecting member 5 and a predetermined location S2 of the main frame element 31 at the predetermined location S2. A second bridging member 82 bridging between the opposing walls 311 and 311 facing in the depth direction, and a drawing means 6 for drawing the first bridging material 81 and the second bridging material 82 toward each other. The contact surface 51a of the connecting member 5 and the end surface 31a of the main frame element 31 are pressed and connected by the drawing force of the drawing means 6.
[0032]
The first frame member 81 has a shape obtained by cutting a part of a cylinder vertically in a plane, and has a solid block shape in which a cylindrical surface portion 81a and a flat surface portion 81b are formed on an outer peripheral surface thereof. . A female screw hole 81c perpendicular to the axis is penetrated so as to open at the center of the flat portion 81b.
[0033]
The second frame member 82 has substantially the same shape as the first frame member 81, and has a screw insertion hole 82c instead of the female screw hole 81c.
[0034]
Both ends of the frame members 81 and 82 are supported by through holes 91 and 92 provided in the opposed walls 53 and 311. The through holes 91 and 92 are shaped to fit the frame members 81 and 82 with almost no gap, and the plane portions 81b and 82b of the frame members 81 and 82 are orthogonal to the pulling direction and they are mutually Support to face backwards.
[0035]
The pulling means 6 can pull the screws 81 and 82 by inserting the screw B into the screw insertion hole 82c from the flat surface portion 82b side and screwing the screw B into the female screw hole 81c. It is what was constituted.
[0036]
Further, in the present embodiment, the line connecting the predetermined portions S1 and S2 in a side view, that is, the screw feed direction is set so as not to be orthogonal to the contact surface 51a, and the contact surface 51a and the end surface 31a are slid by the pulling force. So that a component force is generated. Then, the outer peripheral downward surface 52x of the inner member 52 and the inner peripheral upward surface 31x of the main frame element 31 shown in FIG. Is configured to perform the positioning action of The line has a C-shape in a side view, and is located in a lower half region of the connecting member 5 and the main frame element 31 in the vertical direction.
[0037]
The direction of the screw B is set so as to coincide with the pulling direction and the head thereof is positioned obliquely downward, and a jig such as a driver for tightening and loosening the screw B is inserted. To this end, an opening 31c that opens downward is provided on the lower surface of the end of the main frame element 31, and a relief 52c is provided on the outer peripheral bottom wall portion of the inner member 52. The relief 52c is not always necessary if the amount of protrusion of the inner member 52 is small.
[0038]
In the fastened state, the screw B inserted and screwed into the opening 31c is completely buried in the main frame element 31 and the connecting member 5, so that the screw B can be seen at least from the side or from above. I do not have it.
[0039]
Further, in the present embodiment, the main frame 3 and the auxiliary frame 23 are also connected to each other at the overlapping portion by using the same member connecting device 8A.
[0040]
As shown in FIG. 8, the member connecting device 8A includes a first frame member 81A bridged between the upright facing walls 231 and 231 of the auxiliary frame 23 as a first member, and an upright facing member 81A of the main frame 3 as a second member. The second frame member 82A bridged between the walls 311 and 311 is drawn by the pulling means 6A using the screw B1, and the upper surface of the main frame 3 and the lower surface of the auxiliary frame 23 are pressed and joined. .
[0041]
The first frame member 81A and the second frame member 82A are similar in form to the above-mentioned one, though there are differences in scale, but the description is omitted.
[0042]
Also, the through holes 91A and 92A for supporting the frame members 81A and 82A and the drawing means 6A have the same form, and therefore, the description is omitted.
[0043]
In the member connecting device 8A, the screw feeding direction is vertical and orthogonal to the connecting surface (the upper surface of the main frame 3 and the lower surface of the auxiliary frame 23).
[0044]
In addition, an insertion hole 23c for inserting the screw B1 is provided in the auxiliary frame 23. In the fastened state, the screw B1 inserted and screwed from the insertion hole 23c is completely inserted into the main frame 3 and the auxiliary frame 23. The screw B1 is not buried inside so that the screw B1 cannot be seen.
[0045]
As described above, according to the present embodiment, when the connecting member 5 and the main frame element 31 or the auxiliary frame 23 and the main frame 3 are drawn by the drawing means 6 and 6A, the force is increased by the first frame members 81 and 81A. , And acts along the face plate direction of the opposing walls 53, 311 and 231 via the second frame members 82 and 82A. Therefore, the drawing force by the drawing means 6 and 6A does not act to dent the wall in the thickness direction, and the main frame element 31 and the like are made of a relatively thin material as compared with the conventional fastening means. Thus, the members can be sufficiently pressed and fixed to each other.
[0046]
Further, any one of the frame members 81, 81A, 82, and 82A plays a role as a nut block, so that the number of parts can be reduced.
[0047]
Note that the present invention is not limited to the above embodiment.
[0048]
For example, one frame member common to the two main frames may be bridged. In this manner, if a common member is provided for a plurality of members, the structure can be further simplified. In this case, if the frame is fixed to the main frame, the spacer frame can be omitted. Further, the frame member may be interposed between the opposed walls with both ends fixed to the opposed walls by welding or the like.
[0049]
Of course, various changes such as the shape of the frame material are possible, and the first and second members may have any shape as long as they have even opposing walls such as channel members.
[0050]
Further, the present invention provides an effective member connecting structure even when one or both of the first member and the second member does not have an opposing wall, or has an opposing wall but does not use the opposing wall structure. To provide.
[0051]
For example, as a member connecting device 8B according to another embodiment of the present invention, as shown in FIG. 9, a first member 42 serving as a first member and a second member 31 serving as a second member are connected to a connecting member 50. That are connected via a.
[0052]
As shown in FIGS. 9A and 9B, the connecting member 50 is attached to an opening 421 provided at a predetermined position of the first horizontal member 42. A backing portion 54 to be built-in and a protruding portion 55 that functions as a positioning means and a slip prevention means by projecting outside from the backing portion 54 by closely penetrating the opening portion 421 of the horizontal member 42 are provided. Things. The protrusion 55 has such a value that the outer dimension in the width direction can be closely fitted to the inner dimension in the width direction of the second horizontal member 31 connected to the first horizontal member 42. And a value such that the vertical dimension of the second horizontal member 31 connected to the first horizontal member 42 can be loosely fitted to the vertical dimension of the second horizontal member 31. Is set to
[0053]
On the other hand, a female screw-shaped first fixing portion 81B is formed at a predetermined position S1 of the connecting member 50, that is, at a position inclined obliquely upward in a direction opposite to the protruding direction from the protruding end face of the protruding portion 55. At a predetermined position S2, that is, at a position lower than the fixing portion of the first horizontal member 42 and corresponding to the first fixing portion 81B, between the opposed standing walls of the second horizontal member 31. The second fixing portion 82B is formed by bridging a bridge member having a screw insertion hole similar to that of the embodiment.
[0054]
Then, the first fixing portion 81B and the second fixing portion 82B are pulled toward each other using the bolt-shaped drawing means 6B, so that the first horizontal portion is drawn by the drawing force z of the drawing means 6B. The upright wall of the member 42 is used as the contact surface 42a of the present invention, and the end surface 31a of the second horizontal member 31 is used as the contact surface 31a of the present invention, and these two horizontal members 42, 31 are connected to each other.
[0055]
At this time, in the present embodiment, a line connecting the side view S1 and S2, that is, a setting in which the screw feed direction is not orthogonal to the abutting surface 42a is performed according to the positional relationship between the first fixing portion 81B and the second fixing portion 82B. Has been realized. Therefore, the pulling force z acts not only as a force y for pressing the end surface 31a of the second horizontal member 31 against the upright wall of the first horizontal member 42, but also along the contact surface 42a and the contact surface 31a. A component force x for sliding the two horizontal members 31 with respect to the first horizontal member 42 is generated. The sliding component force x causes the outer peripheral downward surface 55a of the protruding portion 55 to abut against the inner peripheral upward surface 31b of the second horizontal member 31 to function as positioning means for restricting a certain or more sliding action, When the upright surface in the width direction of the protruding portion 55 is closely inserted into the inner wall of the upright wall of the second horizontal member 31, it functions as a stopper for limiting displacement in the width direction. In addition, since the female screw-shaped first fixing portion 81B is provided on the connecting member 50 having the protruding portion 55 which can be easily set to have a large thickness, the female screw portion can be set longer. Can be made more reliable.
[0056]
Note that the direction of the screw B is set so as to coincide with the pulling direction and the head thereof is positioned obliquely downward. However, in order to insert a jig such as a screwdriver for tightening and loosening the screw B. In addition, an opening 311 that opens downward is provided on the lower surface of the second horizontal member 31.
[0057]
In the fastening state, the screw B inserted and screwed from the opening portion 311 is completely buried in the first and second horizontal members 42 and 31, and the screw B is viewed at least from the side or from above. Is not visible.
[0058]
The above embodiment can be implemented as long as the opening portion 421 and the connecting member 50 can be provided.
[0059]
As a form of the second fixing portion 82B provided in the second member 31, as shown in the perspective view of FIG. 10, a circular hole is formed between the upright facing walls 231 and 231 so that the columnar frame member 82B is inserted therethrough. Such a configuration may be used. Further, as shown in FIG. 11, a square pole-shaped frame member 811 can be provided as the second fixing portion. The frame member 811 in the figure is an example that is fixed between the upright facing walls of the second member 310 by welding and does not penetrate the upright facing walls.
[0060]
Further, as shown in FIG. 12, a bridge member is bridged between the upright facing walls 314 and 314 of the plate member 313 bent in a U-shape, and the plate member 313 is connected to the second member 310 having a square pipe shape as a second member. The first fixing portion 812 may be provided in the square pipe-shaped member 310 by inserting the member into the inside and bonding it to the inner wall by welding or the like.
[0061]
As described above, by selecting and applying the above-described modes according to the members and locations to be joined, the applicable range of the present embodiment can be further widened.
[0062]
Further, as shown in FIG. 13, when connecting the two square pipe-shaped members 315 and 316, the space 317a above the partition member 317 or the like in the cross section of the first member 315 is used to connect the two members 315 and 316 to the second member 316. A projecting portion 318 having a cross-sectional shape corresponding to the space 317a may be formed, and the projecting portion 318 may be inserted into the space 317a to function as the slip stopper of the present invention. Further, if such a joining form is used as the positioning means and the slippage preventing means according to the present embodiment, it is possible to more suitably join both members. As described above, in the member coupling device according to the present embodiment, by using the member coupling device in combination with the member joining unit, the member coupling device can be more suitably and widely applied.
[0063]
Further, as a modified example of the present embodiment, as shown in FIG. 14, a rectangular parallelepiped connecting member 350B is externally attached to a predetermined position S1 of a support 342 serving as a first member by welding or the like, whereby a horizontal member serving as a second member is provided. It is also possible to connect 331. The connecting member 50B functions as a positioning unit and a slip preventing unit when the main body is directly fitted into the end portion 331a of the horizontal member 331 like the projecting portion 55 of the connecting member 50. . At a predetermined position S1 of the connection device 350B, a female screw-shaped first fixing portion 381C provided in an inclined direction is provided. Similar to the first fixing portion 381C and the connecting member 50 described above. The second fixing portion 382C provided on the horizontal member 31 is connected by being drawn by a drawing means (not shown), and the same operation and effect as those of the connecting device 50 described above are exhibited.
[0064]
With such a structure, in addition to the operation and effect of the connecting device 50 described above, for example, the space for inserting a backing member or the like inside the support 342 is insufficient, and it is impossible to insert another member. In particular, the present invention can be suitably applied to the case where the horizontal member 331 is connected to the column 342 from a plurality of directions as shown in FIG.
[0065]
Further, as another modified example of the present embodiment, as shown in FIG. 15, there is a mode in which a horizontal member 431 is connected by using a cap attached to an upper end portion of a column 442 serving as a first member as a connecting member 450C. be able to. The connecting member 450C is disposed at a predetermined position of the main body 451 in a tilted direction, so that the screw-shaped first fixing portion 481D, the protruding portion 455 protruding from the main body 451, and the end surface of the upper end of the support column 442 are provided. And an upper surface portion 456 which is a flat plate having the same shape. When installing the connecting member 450c on the column 442, the upper surface 456 of the connecting member 450C is placed on the end of the column 442 while swallowing the main body, and then the connecting member 450C is placed at a predetermined position on the column 442. By moving the protrusion 455 in the direction of the first opening 422 provided in S <b> 1, the protrusion 455 protrudes outside the second opening 423 provided in the support 442. On the other hand, in the same manner as in the above-described embodiments, a bridge functioning as a second fixing portion is bridged between the upright facing walls of the horizontal member 431 as the second member to be joined to the support column 442. Then, a pulling means such as a screw penetrating through the frame member and penetrating the column 442 and being obliquely inserted from the horizontal member is screwed into the first fixing portion 481D, and tightened. The member 431 is pulled in between, so that the end surface 431a of the horizontal member 431 can be pressed against the outer wall of the column so as to be closely attached and fixed.
[0066]
In this case as well, an upward sliding force perpendicular to the pulling direction of the horizontal member 431 with respect to the column 442 is generated as a component force, but the bottom surface of the horizontal member 431 is formed on the downward surface of the projection 455. By locking the upper surface, the projection 455 can effectively function as the positioning means of the present invention.
[0067]
Further, as another modified example of the present embodiment, as shown in FIG. 16, the first horizontal member 510 as the first member and the second horizontal member 520 as the second member are connected via the connecting member 500. What you did.
[0068]
The connection member 500 is provided externally to the first horizontal member 510 by mounting a bolt b2 and a nut n2 at a position of a screw hole 511 provided at a predetermined position of the first horizontal member 510. The positioning according to the present invention by being inserted into the inside of the second horizontal member 520 when the second horizontal member 520 is mounted, and the interposition portion 501 exposed to the outside when the second horizontal member 520 is mounted. And a protruding portion 502 functioning as a slip stopper. The protrusion 502 has an outer dimension in the width direction which can be closely fitted to an inner dimension in the width direction of the second horizontal member 520, and an inner dimension in the vertical direction of the second horizontal member 520. Is set to such a value that it can be loosely fitted to the vertical dimension of the vertical direction.
[0069]
On the other hand, a female screw-shaped first fixing portion 503 is provided at a position inclined obliquely downward from the protruding end surface 502a of the protruding portion 502 in the direction opposite to the protruding direction, and is provided at a predetermined position of the upper plate 520a of the second horizontal member 520. Is provided with a second fixing portion 523 in which an upper plate 520a is depressed in the shape of a letter when viewed from the side, and a screw insertion hole 522 is provided on the depressed inclined surface 521. The surface of the interposition part 501 when the connecting member 500 and the second horizontal member 520 are in contact with each other is defined as the contact surface 501a of the present invention, and the end surface of the second horizontal member 520 is defined as the contact surface 520t of the present invention. .
[0070]
Here, when the bolts are drawn in mutually converging directions using the bolt-shaped pulling means 6B, not only a force for pressing the contact surface 501a against the contact surface 520t acts, but also the contact surface 520t moves along the contact surface 501a. A downward sliding force is generated. Then, the upper plate 520a of the second horizontal member 520 abuts on the protruding portion 502 due to the sliding force, thereby restricting a certain or more sliding action, and the protruding portion 502 functions as positioning means. In this way, the first horizontal member 510 and the second horizontal member 520 are connected to a predetermined position via the connecting member 500.
[0071]
With such a configuration, the second horizontal member 520 can be connected even when the internal space of the first horizontal member 510 is narrow. In addition, since the protrusion 502 can be set to have a large thickness, by providing the first fixing portion 503 on the protrusion 502, the female screw portion can be set longer. By doing so, the pulling force of the pulling means 6B by screwing the screws can be made more reliable. Furthermore, since the processing to be performed on the first horizontal member 510 is only to provide a screw hole, it is possible to easily set a place where the second horizontal member 520 is connected. In addition, since the 1st horizontal member 510 and the 2nd horizontal member 520 are connected via the connecting member 500, the shape of the interposition part 501 is adjusted suitably, and the 1st horizontal member 510 and the 2nd horizontal member 520 are connected. It is also possible to appropriately set the angle for connecting with the frame member 520.
[0072]
Next, as shown in FIG. 17, an aspect in which the connecting member 500b is fixed to the first horizontal member 510b can be given. The connecting member 500b has an engaging surface 504 that can be engaged with the rail groove 513 in a first horizontal member 510b having a rail groove 513 extending in the longitudinal direction on a side surface connecting the second horizontal member 520. The first horizontal member 510b and the connecting member 500b are fixed by engaging the engaging surface 504 with the rail groove 513. With such a structure, the first horizontal member 510b and the connecting member 500b can be reliably connected, and the second horizontal member 520 can be connected to a desired location along the rail groove 513. it can.
[0073]
In addition, as shown in a connecting member 500c shown in FIG. 18, a mode in which an inclined protruding end surface 502c is provided so that the drawing direction of the drawing means 6B and the direction facing the first fixing portion 503c provided on the connecting member 500c match. Can be mentioned. With such a configuration, since the female screw portion can be set longer, the second horizontal member 520 can be connected more reliably.
[0074]
Here, an aspect in which the second fixing portion 523 is provided on the second horizontal member 520 shown in FIGS. 16 to 18 is shown as a perspective view in FIG. In this embodiment, an opening 520b is provided in the upper plate 520a of the second horizontal member 520, and a second fixing portion 523 is provided by inserting a fixing member 521a having a screw insertion hole 522. In such a case, since the processing performed on the second horizontal member 520 is only to provide the opening 520b, the second horizontal member 520 can be easily connected to the connecting member 500. Also, as shown in FIG. 20, the opening 520c provided in the second horizontal member 520 is simply rectangular, and a fixing member 521b formed by bending a strip-shaped plate having a screw insertion hole 522b is attached to the opening 520c. An aspect in which the second fixing portion 523b is provided by being inserted is shown. In such a case, the processing to be performed on the second horizontal member 520 is only to open the opening 520c, and the fixing member 521b can be created only by bending the plate material. Can be provided.
[0075]
Further, as shown in FIG. 21, two cuts parallel to each other are provided in a predetermined position of the second horizontal member 520 in the longitudinal direction, and a portion between the two cuts is subjected to press working to provide a side view. The second fixing portion 523c is formed by providing a screw insertion hole 522c in the U-shaped depression 521c. With such a structure, the second horizontal member 520 can be connected to the connecting member 500 or the like without using a separate member.
[0076]
Next, as shown in FIG. 22, a fixing member 521d having a screw insertion hole 522d is dropped from an opening 520d provided in the second horizontal member 520 to a lower portion inside the second horizontal member 520, and the second horizontal member 520 is lowered. The second fixing portion 523d may be provided by welding to the lower plate 520x. In such a case, the fixing member 522d contacts the upper plate 520a of the second horizontal member 520 at the upper portion, and contacts the lower plate 520x of the second horizontal member 520 at the lower portion. By doing so, the pulling force of the pulling means 6B with respect to the second horizontal member 520 can be dispersed and transmitted to the upper plate 520a and the lower plate 520x of the second horizontal member 520. Can be effectively applied to connect to the connecting member 500 or the like.
[0077]
Various modifications can be made to other configurations without departing from the spirit of the present invention.
[0078]
【The invention's effect】
As described in detail above, according to the present invention, when the first member and the second member are drawn by the drawing means, the force is applied along the face plate direction of the facing wall via the first and second bridge members. Will work. Therefore, the drawing force of the drawing means does not act to depress the wall in the thickness direction, and the first and second members are made of a relatively thin material as compared with the conventional fastening means. Thus, the members can be sufficiently pressed and fixed to each other.
[0079]
Further, according to the present invention, when the first member and the second member are pulled, the force generates a component force for sliding the first member and the second member along the contact surface thereof, and the sliding Due to the component force, the first member and the second member come into close contact with each other in the direction in which they come close to each other, and the positioning operation in the sliding direction is performed along the contact surface between the first member and the second member. In other words, the pulling force of the pulling means exerts the positioning function as it is, and it is possible to perform the positioning in two directions efficiently and accurately by a single operation.
[Brief description of the drawings]
FIG. 1 is an overall perspective view showing a table according to an embodiment of the present invention.
FIG. 2 is an overall side view showing a table in the embodiment.
FIG. 3 is an overall bottom view showing the table in the embodiment.
FIG. 4 is an overall side view showing the top plate support structure in the embodiment.
FIG. 5 is an exploded perspective view of a main part showing a connecting portion in the embodiment.
FIG. 6 is an essential part side view showing the connecting portion in the embodiment.
FIG. 7 is a cross-sectional view showing an internal structure in a region A of FIG. 3;
FIG. 8 is an essential part exploded perspective view showing a coupling structure of the main frame and the auxiliary frame in the embodiment.
FIG. 9 is a perspective view (A) and a cross-sectional view (B) of a main part showing a connecting portion according to another embodiment of the present invention.
FIG. 10 is a perspective view of a main part of the embodiment.
FIG. 11 is an essential part perspective view showing a modification of the embodiment.
FIG. 12 is an essential part perspective view showing the modification.
FIG. 13 is an essential part perspective view showing another modified example of the embodiment.
FIG. 14 is an essential part perspective view showing another modified example of the embodiment.
FIG. 15 is an essential part perspective view showing another modification of the embodiment.
FIG. 16 is an essential part cross sectional view showing another modification of the embodiment.
FIG. 17 is an essential part cross sectional view showing another modification of the present embodiment.
FIG. 18 is an essential part cross sectional view showing another modification of the present embodiment.
FIG. 19 is an essential part perspective view showing another modification of the embodiment.
FIG. 20 is an essential part perspective view showing another modified example of the embodiment.
FIG. 21 is an essential part perspective view showing another modification of the embodiment.
FIG. 22 is an essential part cross sectional view showing another modification of the present embodiment;
[Explanation of symbols]
8, 8A, 8B ... member coupling device
81, 81A: First frame
81B, 812, 381C, 481D, 503, 503c ... first fixing portion
82, 82A ... second frame
82B, 811, 382C, 523, 523b, 523c, 523d: second fixing portion
81c ... female screw hole
82c, 522, 522b, 522c, 522d: Screw insertion holes
31, 3, 310, 316, 331, 431, 520... Second member (main frame element, main frame)
53, 231, 314 ... opposed wall
5, 23, 42, 315, 342, 442... First member (connection member, auxiliary frame)
6, 6A, 6B ... withdrawal means
B, B1 ... screw

Claims (19)

A first member having a pair of opposed walls and a second member having a pair of opposed walls, and
A first bridge spanned or interposed between the opposing walls at a predetermined location of the first member, and a second bridge spanned or interposed between the opposing walls at a predetermined location of the second member; Drawing means for drawing the first frame member and the second frame member in directions approaching each other, and pressing and coupling the first member and the second member by a drawing force of the drawing member. A member joining device characterized by the above-mentioned. The member connecting device according to claim 1, wherein the drawing means draws and tightens the first frame and the second frame using a screw feed mechanism. The pulling means allows a screw to be inserted through a screw insertion hole provided in one of the first frame member and the second frame member, and the screw is screwed into a screw hole to be provided in the other. The member connecting device according to claim 1 or 2, wherein the first and second bridge members are drawn. The member connecting device according to claim 1, 2 or 3, wherein the first member and the second member have a square pipe shape. In the first member, adjacent second members are connected to each other via the first member, and a pair of abutment surfaces slightly inclined in a direction in which the first members are opposed to each other and are shifted downward as they approach each other. The member connecting device according to any one of claims 1 to 4, wherein an end surface of the second member is pressed against a contact surface thereof to connect the second member. The second member is a pipe member, and the first member includes a pipe-shaped outer member having a cross-sectional profile conforming to the second member, and an inner member protruding outward from each end face of the outer member. The end surface of the outer member is the contact surface, and the projecting portion of the inner member is fitted into the end of the second member to connect the first member and the second member. Item 6. The member connecting device according to Item 5. A line connecting the first frame and the second frame is set so as not to be orthogonal to the contact surface in a side view, so that a component force for sliding the contact surface and the end surface by a pulling force is generated, 7. The structure according to claim 6, wherein the outer peripheral surface of the inner member and the inner peripheral surface of the second member are brought into close contact with each other by the sliding force, and the positioning operation between the first member and the second member is performed. Member connecting device. The first member and the second member are arranged so that their connection directions substantially coincide with each other in the horizontal direction, and are provided on a first frame provided on the first member and on each second member located on both sides thereof. The member connecting device according to claim 7, wherein the lines connecting the second frame members are set to form a C shape in a side view. 9. The member connecting device according to claim 8, wherein the line having a C-shape in a side view is set in a vertically lower half region of the first member and the second member. It is for joining the first member and the second member,
Positioning means protrudingly provided at a predetermined position of the first member;
A first fixing portion having a screw hole to be provided on the projecting portion of the positioning means,
A second fixing portion having a screw insertion hole provided at a predetermined position of the second member,
Pulling means for pulling the first fixing portion and the second fixing portion together by screwing the screws together;
The pulling means slides a line connecting the first fixing portion and the second fixing portion along the contact surface between the first member and the second member by a pulling force. A member connecting device which is set so as to generate a force, and wherein the positioning means performs a positioning operation between the first member and the second member by restricting a sliding movement thereof. At least one of the first member and the second member includes a slip stopper corresponding to a force in a direction substantially orthogonal to both the opposing force and the sliding force. The positioning action of the first member and the second member is performed by restricting displacement in a direction substantially perpendicular to both the approaching force and the sliding force, according to claim 10. Member connecting device. The second member is a pipe member, and the first member has an inner member protruding outward, and the inner member is fitted into an end of the second member to position the inner member in the positioning means. 12. The member connecting device according to claim 11, wherein the member is used as the slip stopper. The inner member has a pair of opposing walls, the first fixing portion is a first frame member spanned or interposed between the opposing walls, and the pipe member has a pair of opposing walls. The member connecting device according to claim 12, wherein the second fixing portion is a second bridge member that is bridged or interposed between the opposed walls. The member connecting device according to any one of claims 10 to 13, wherein the first member and the second member have a square pipe shape. In the first member, adjacent second members are connected via a first member, and a pair of abutment surfaces slightly inclined in a direction in which the first members are opposed to each other and are shifted downward as they approach each other. The member joining device according to any one of claims 10 to 14, wherein the end surface of the second member is pressed against the contact surface to join the second member. The member connecting device according to claim 10, wherein the first fixing portion is provided by being externally attached to the first member. 17. The member connecting device according to claim 16, wherein the first member has a rail groove, and the first fixing portion is provided by engaging with the rail groove. The member connecting device according to claim 16 or 17, wherein the second fixing portion is provided on an inclined surface depressed from a predetermined position of the second member. The member connecting device according to any one of claims 16 to 18, wherein the second fixing portion is formed by inserting a fixing member having a screw insertion hole into an opening provided at a predetermined position of the second member. .

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