JP2019116922A - Connection structure of lateral cross member - Google Patents

Abstract

To provide a connection structure of lateral cross member like main rails and crosslinking beams or the like for constructing a rack.SOLUTION: A structure is connected by fitting both side walls (6, 6) of a second member downward from above in a fitting window part (7) obtained by causing an upper window part (7a) opening on an upper wall of a first member and a lower window part (7b) opening on a side wall to mutually communicate with each other, and an outward facing rib (13) of both side walls (6, 6) of the second member is caused to get over a claw part (9) of a lower window part (7B) to fit into a lower fitting space (10) of the claw part, and is caused to fit a locking wall (13a) formed from an upper wall of the outward facing rib to a locked edge (9b) formed from a lower edge of the claw part.SELECTED DRAWING: Figure 3

Description

BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a connection structure of a main rail and a transverse cross member such as a horizontal cross beam or the like for constructing a warehouse rack.

For example, a connecting device using pins and fittings is provided to connect two members forming a rack in a transverse crossing state.

JP 2001-187616 A

For example, when constructing a rack for a three-dimensional automatic warehouse, when using a coupling device composed of pins and brackets, it is necessary to assemble the coupling device at a very large number of intersection points, so only at high cost. It will be forced to work for a long time.

Then, the structure which makes it possible to connect both members by opening a window part in one member of a pair of crossing members and inserting the other member in the window part, without requiring such a connecting device. It is desirable to use

However, in this case, the insertion work for connection can be completed with one touch, the work efficiency is high, the connection state after insertion is reliable and there is no possibility of accidental separation, and the connection state is good, that is, It is an important issue that there is no backlash.

SUMMARY OF THE INVENTION The present invention provides a connection structure of transverse cross members that solves the above-mentioned problems, and as a means therefor, it is a first member made of steel having a hollow shape in cross section and having an upper wall and both side walls. And, with the second members made of steel and having a cross-sectional downward groove shape cross-arranged from each other in the lateral direction, the both side walls of the second member are inserted downward from above into the fitting windows opened in the first member And the fitting window communicates with the upper window opening in the upper wall of the first member and the lower window opening in the side wall. And by projecting the claws inwardly from both side edges of the lower window, the upper edge of the claws forms a guide edge extending downward in an inward inclined state, and the lower edge A locked edge that intersects the guide edge at an acute angle is formed, and the locked edge and the lower window portion A fitting space is provided between the lower edges, and both side walls of the second member are an outward rib fitted into the fitting space of the lower window portion, and an inward rib for fitting the claw portion. A bent wall is formed, and a locking wall is formed by the upper wall of the outward rib to be fitted to the locked edge of the claw portion, and a guide wall is formed by the side wall to extend downward in an inward inclined state When the side walls of the second member are pressed downward from above into the fitting window portion of the first member, the guide wall is made to pass through the inward deformation of the side walls along the guide edge. The outward rib is made to enter the fitting space, and the locking wall is fitted to the locked edge through the outward restoring force of both side walls inside the fitting space. The point is

The upper wall of the first member is trapezoidal in cross section provided with a top wall and a slant wall extending from the top wall to both side walls, and the upper window of the fitting window is opened in the slant wall Preferably, when the side walls of the second member are pressed downward from above into the fitting window portion of the first member, the guide wall of the outward rib is on the oblique edge along the oblique wall of the upper window portion. It is preferable to be configured to enter the lower window through inward deformation of both side walls by being pressed inward along.

In a preferred embodiment of the present invention, the outward rib of the second member comprises an abutment portion located below the guide wall and in contact with the lower edge of the lower window portion to form the fitting space The height dimension H2 from the abutment portion of the outward rib to the locking wall is set to H1 <H2 with respect to the height dimension H1 from the lower edge of the lower window portion to the locking edge When the outward rib is fitted into the fitting space, the locking wall is compressed downward to press the locking wall against the locked edge.

The side walls of the second member preferably include an extension wall extending downward from the outward rib, and a notch groove is preferably formed at the lower end of the extension wall, whereby the outward rib Preferably, the lower edge of the lower window portion is inserted into and locked in the notch groove when fitted into the fitting space.

According to the present invention, the connection between the first member 1 and the second member 2 which are arranged to cross each other does not require a conventional connecting device, and the second member 2 is formed in the fitting window portion opened in the first member 1 By inserting both side walls 6, 6, there is an effect that connection work with high work efficiency by one-touch insertion work, a reliable connection state after insertion, and a good connection state without rattling can be achieved. .

It is a perspective view which illustrates the cross member connected by the connection structure of this invention. It is a perspective view which shows the state before connecting a 1st member and a 2nd member. It is a perspective view which shows the fitting window part opened to the 1st member, and the cross-sectional part of the 2nd member inserted in this fitting window part in isolation | separation state regarding one Embodiment of this invention. With respect to one embodiment of the present invention, (A) is a perspective view showing the end of the second member facing the fitting window of the first member, and (B) is a second member showing the fitting window. It is a perspective view which shows the state which inserted the edge part and completed connection. It is explanatory drawing which shows the relationship between the structure regarding the fitting window part of a 1st member, and the structure regarding the both-sides wall of a 2nd member. With respect to the operation, a state in which the outward rib faces the upper window portion is shown, (A) is a general view seen from the cross sectional direction of the second member, and (B) is a partially enlarged view. In terms of operation, the outward rib is shown to be pressed inward along the oblique edge of the upper window, (A) is a general view seen from the cross section of the second member, (B) is a partially enlarged view FIG. With respect to the operation, the outward rib is shown to be pressed inward along the guide edge of the claw, (A) is a general view seen from the cross sectional direction of the second member, (B) is a partially enlarged view It is. With respect to the operation, the outward rib has shown the state which approached into fitting space, (A) is the general view seen from the cross section direction of the 2nd member, (B) is a partially expanded view. The other embodiment of this invention has shown embodiment which comprised the fitting window part of the 1st member by the single opening, and (A) is the general view seen from the cross section direction of the 2nd member, ( B) is a perspective view showing a connected state.

Hereinafter, preferred embodiments of the present invention will be described in detail based on the drawings.

(First member and second member)
As shown in FIGS. 1 and 2, for example, in a rack such as a three-dimensional automatic warehouse rack, between the main rails 1a and 1b disposed in parallel at a predetermined interval, a horizontal cross beam 2a intersecting this is arranged at a predetermined interval It arranges in parallel and is constructed by connecting the end of cross beam 2a to main rails 1a and 1b. In this regard, in the present invention, when the main rail is the first member 1 and the cross beam is the second member 2, the present invention does not use a conventional connecting device constituted by pins and fittings. By fitting the second member 2 into the fitting window portion opened in the one member 1, a connectable connection structure is provided.

As illustrated, the first member 1 is configured by cutting a long body having a cross section hollow shape provided with the upper wall 3 and both side walls 4 and 4 into a predetermined length by bending a thick steel plate The upper wall 3 is preferably trapezoidal in cross section including a top wall 3a and a slant wall 3b extending from the top wall 3a to both side walls 4 and 4. In the illustrated example, the cross section of the first member 1 is formed in a groove shape, but is not limited to this.

On the other hand, the second member 2 is formed by bending a relatively thin steel plate so that a cross section downward groove-shaped elongated body in which both side walls 6, 6 are provided vertically from the flat upper wall 5 has a predetermined length. The both side walls 6, 6 are bent so as to form an outward rib and an inward rib which will be described later.

(Overall configuration of connected structure)
As shown in FIG. 3, the connecting structure for connecting the end of the second member 2 to a predetermined portion of the first member 1 comprises a fitting window 7 formed in the first member 1 and the fitting window It is comprised by the both-sides walls 6 and 6 of the 2nd member 2 inserted downward with respect to 7 with respect to upper direction.

In the case of the illustrated embodiment, the fitting window 7 is constituted by a pair of left and right fitting windows 7L, 7R corresponding to the side walls 6, 6 of the second member 2, but will be described later based on FIG. Thus, it is possible to constitute by means of a single fitting window 7 which allows the side walls 6, 6 of the second member 2 to be received. Therefore, in the following description, the entire left and right fitting windows 7L and 7R are regarded as one fitting window 7, and the outer edges located on both sides thereof (that is, the left edge of the left fitting window 7L) The right side edge of the right fitting window 7R) is referred to as "lateral edge".

The fitting window 7 is formed by connecting the upper window 7 a opening in the oblique wall 3 b and the lower window 7 b opening in the side wall 4 to each other. Therefore, the side edges of the upper window 7a respectively constitute oblique edges 8 which are inclined along the oblique wall 3b.

The lower side windows 7b are provided with claws 9 projecting inward from both side edges. It is preferable that the claw portion 9 be provided so as to face the bending wall 4b of the oblique wall 3b and the side wall 4 as shown in the figure, and the lower window portion 7b is in a protruding shape located below the claw portion 9 It is expanded, thereby forming the fitting space 10.

As shown in the drawings, the diagonal edges 8, 8 at the opposite side edges of the fitting window 7 as described above, the claws 9, 9, and the fitting spaces 10, 10 are formed in a laterally symmetrical shape.

On the other hand, both side walls 6, 6 of the second member 2 are located at the lower end of the vertical wall 11 and the vertical wall 11 bent downward from the side edges of the upper wall 5, respectively, and the claws 9, an outward rib 13 which can be fitted into the fitting space 10 by being continuous with the lower side of the inward rib 12, and an outward rib 13 which can be fitted into the fitting space 10; A downwardly extending extension wall 14 is bent and formed. In the case of the illustrated embodiment, the fins 14 a are bent outward at the lower edge of the extension wall 14.

The vertical walls 11, 11 on the side walls 6, 6 of the second member 2 as described above, the inward ribs 12, 12, the outward ribs 13, 13 and the leg walls 14, 14 are as shown The side walls 6, 6 having such a cross-sectional shape are formed in a laterally symmetrical shape and extend in the longitudinal direction together with the upper wall 5 to constitute a long second member 2. Therefore, the extension walls 14 and 14 are cut at the end 2E so as to constitute a connecting portion to be fitted into the fitting window 7 of the first member 1 by the end 2E of the second member 2. A notch 15 is formed.

When the end 2E of the second member 2 is connected to the fitting window 7 of the first member 1 based on the above configuration, both side walls 6 of the second member 2, as shown in FIG. The lower end portion of 6 is inserted into the fitting window 7, the notch groove 15 faces the lower edge 10 a of the fitting window 7, and the outward ribs 13, 13 are placed on the oblique edges 8, 8 Then, a downward pressing force may be applied to the second member 2. Thereby, the both side walls 6, 6 of the second member 2 are inserted into the fitting window 7 while being bent and deformed, and after being inserted, as shown in FIG. 4 (B), the both sides 6, 6 are restored. As a result, the outward ribs 13, 13 are fitted into the fitting spaces 10, 10, and a connected state is obtained.

Since the end 2E of the second member 2 locks the notch groove 15 to the lower edge 10a of the fitting window 7, it does not escape from the fitting window 7 in the longitudinal direction, and Since the outward ribs 13, 13 are fitted into the fitting spaces 10, 10, they do not escape upward from the fitting window 7. Incidentally, in the case of constructing a rack as shown in FIG. 1, since the second member 2 is connected in a state of being interposed between the two first members 1 and 1 fixedly installed, in this case, the notch The grooves 15 are not necessarily required.

(Characteristic configuration of connection structure)
The preferred embodiment of the present invention is provided with the characteristic configuration as shown in FIGS. 5 to 9, whereby the connection operation with high work efficiency by the one-touch insertion operation, the reliable connection state after insertion, It enables a good connection state without rattling.

As shown in FIG. 5, the interval width dimension W1 of the oblique edges 8 of the upper window portion 7a and the external interval dimension W2 of the vertical walls 11 of the second member 2 are formed such that W1 ≧ W2. There is. And the interval dimension W3 of the outward method of the outward ribs 13, 13 and the interval dimension W4 of the inner method of the fitting space 10, 10 are formed such that W1 <W3 ≦ W4. In addition, it is preferable that the interval dimension W5 of the extension wall 14, 14 can be easily inserted into the lower window 7b in a state where the extension wall 14 does not interfere with the claw portion 9, and the inner method of the claw portions 9, 9 W5 <W6 is formed with respect to the space dimension W6 of.

The claws 9 protruding from the side edge of the lower window 7b form a guide edge 9a extending downward in an inward inclined state at the upper edge, and a lower edge that intersects the guide edge 9a at an acute angle. The locking edge 9b is formed. The inward rib 12 of the side wall 6 of the second member 2 is bent so as to allow the claw portion 9 having such a shape to be fittable, and is continuously provided below the inward rib 12 The outward rib 13 is bent so as to be able to be fitted into the fitting space 10, and is engaged with the engaged edge 9b by the upper wall constituting the continuous portion of the inward rib 12 A wall 13a is formed, and a side wall bent downward from the locking wall 13a forms a guide wall 13b extending downward in an inward inclined state, and the extension from the lower end of the guide wall 13b A support wall 13 c is formed to extend inwardly toward the wall 14.

The locked edge 9b of the claw 9 and the locking wall 13a of the outward rib 13 are formed in the horizontal direction (including the substantially horizontal direction), as shown in FIG. 9 (B). As described above, it is preferable that at least the locking edge 9b be formed so as to incline upward from the tip of the claw 9 toward the side, and the locking wall 13a is folded at an acute angle from the inward rib 12 It is preferable that it is bent.

As described later, when the outward rib 13 is inserted into the fitting space 10, the outward rib 13 is located below the guide wall 13b and is supported by the lower edge 10a of the lower window 7b. It is provided. In the illustrated embodiment, the abutment portion 16 is constituted by the groove bottom edge 15a of the notch groove 15, but may be constituted by the support wall 13c.

In such a configuration, the height dimension H1 from the lower edge 10a forming the fitting space 10 to the locked edge 9b, and the height of the external method from the abutment portion 16 of the outward rib 13 to the locking wall 13a. The height dimension H2 is formed to satisfy H1 <H2. Therefore, when the outward rib 13 is fitted into the fitting space 10, the locking wall 13a is configured to be compressed and deformed downward.

(Characteristic action)
As described above, the end 2E of the second member 2 inserts the extension walls 14, 14 of the side walls 6, 6 into the lower window 7b from the upper window 7a, and the outward ribs 13, 13 into the upper window The outer ribs 13 and 13 are fitted into the fitting spaces 10 and 10 when the outer ribs 13 and 13 are fitted into the fitting spaces 10 and 10 when they are pressed into the lower window portion 7b by strongly pressing downward while being placed on the oblique edges 8 and 8 of 7a. It is connected to the member 1.

If the upper wall 5 of the second member 2 is strongly pressed from the state in which the outward ribs 13 and 13 are placed on the oblique edges 8 and 8 as shown in FIG. 6, as shown in FIG. The guide rib 13 can be advanced toward the claws 9 while the guide wall 13 b is pressed inward along the oblique edge 8 and the inward wall 11 is deformed inward.

When downward pressure is further applied to the second member 2 from the state where the outward rib 13 faces the claw portion 9, as shown in FIG. 8, the guide wall 13b of the outward rib 13 is a guide edge 9a of the claw portion 9. The inward rib 13 can be made to approach toward the fitting space 10 while being pressed inward along with the inward deformation of the vertical wall 11 further inward.

When the outward rib 13 is released from the inward pressing force by passing through the claw portion 9, the outward rib 13 immediately enters the fitting space 10 by the outward restoring force of the vertical wall 11 and is fitted. At this time, as shown in FIG. 9, the outward rib 13 is engaged with the engagement wall 16a while being compressed downward in a state where the abutment portion 16 is in contact with the lower edge 10a of the fitting space 10. The fitting space 10 is fitted along the edge 9 b. By the way, when the outward rib 13 does not enter into the fitting space 10 only by the outward restoring force of the vertical wall 11, if the upper wall 5 is pressed harder with the abutment portion 16 being in contact with the lower edge 10a. Since the locking wall 13 a is compressed and deformed downward via the inward rib 12, the outward rib 13 can be fitted into the fitting space 10.

Thereby, as shown in the drawing, the outward rib 13 is fitted by pressing the upper locking wall 13a against the locked edge 9b while the lower abutment portion 16 is in contact with the lower edge 10a. As a result of being worn, a coupled state in which rattling does not occur inside the fitting space 10 is obtained.

(Another embodiment)
Although the example which comprised the fitting window part 7 by left-right paired fitting window part 7L, 7R was illustrated in said embodiment, as mentioned above, the fitting window part 7 is a both-sides wall of the 2nd member 2 6 and 6 may be constituted by a single opening that can be received, and can be provided as another embodiment as shown in FIG.

DESCRIPTION OF SYMBOLS 1 1st member 1a, 1b Main rail 2 2nd member 2a Lateral cross beam 2E end 3 top wall of the 1st member top wall 3a top wall 3b diagonal wall 4 side wall 4a of the 1st member bending curve 5 top wall of the 2nd member Side wall 7 of second member 7 fitting window 7L left fitting window 7R right fitting window 7a upper fitting window 7b lower fitting window 8 slanted edge 9 claw 9a guide edge 9b locked Edge 10 Fitting space 10a Lower edge 11 Vertical wall 12 Inward facing rib 13 Outward rib 13a Locking wall 13b Guide wall 13c Support wall 14 Extension wall 14a Fin 15 Notch groove 15a Groove bottom edge 16 Joint support part

Claims (4)

The first hollow steel member (1) having the upper wall (3) and the side wall (4) and the second steel member (2) in the downward groove shape cross each other. The first member and the second member are inserted by fitting the both side walls (6, 6) of the second member downward from above into the fitting window (7) opened in the first member in a state of being cross-arranged from the direction Is a structure that connects
The fitting window (7) is formed by mutually communicating the upper window (7a) opened in the upper wall of the first member and the lower window (7b) opened in the side wall, and the lower window By projecting the claws (9) inwardly from both side edges of (7b), the upper edge of the claws forms a downwardly extending guide edge (9a) in an inward inclined state, and by the lower edge A locked edge (9b) intersecting the guide edge at an acute angle is formed, and a fitting space (10) is provided between the locked edge and the lower edge of the lower window portion.
Both side walls (6, 6) of the second member are an outward rib (13) to be fitted into the fitting space (10) of the lower window portion and an inward rib to fit the claw portion (9) (12) is bent to form a locking wall (13a) to be fitted to the locked edge (9b) of the claw portion by the upper wall of the outward rib, and inward inclined state by the side wall Form a downwardly extending guide wall (13b),
When the both side walls (6, 6) of the second member are pressed into the fitting window (7) of the first member downward from above, the guide wall (13b) is placed along the guide edge (9a) By passing through the inward deformation of the wall, the outward rib (13) is made to enter the fitting space (10), and the outward restoring force of both side walls inside the fitting space is obtained. A connection structure of transversely crossing members characterized in that the locking wall (13a) is fitted to the locked edge (9b). The top wall (3) of the first member has a top wall (3a) and a slant wall (3b) extending from the top wall to the side wall bent to form the upper window (7a) of the fitting window. It is opened to the slant wall (3b)
When the side walls of the second member are pressed downward from above into the fitting window of the first member, the guide wall (13b) of the outward rib is a slanted edge (along the oblique wall (3b) of the upper window) The transverse cross member according to claim 1, characterized in that when pressed inward along 8), it enters into the lower window through inward deformation of both side walls. Connection structure. The outward rib (13) of the second member comprises an abutment portion (16) located below the guide wall (13b) and in contact with the lower edge (10a) of the lower window portion.
The contact portion of the outward rib (13) with respect to the height dimension H1 from the lower edge (10a) of the lower window portion forming the fitting space (10) to the engaged edge (9b) The height dimension H2 from 16) to the locking wall (13a) is configured to be H1 <H2,
When the outward rib (13) is fitted into the fitting space (10), the locking wall (13a) is compressed downward, and the locking wall (13a) is fitted to the locked edge (9b) The connection structure of transversely crossing members according to claim 1 or 2, which is configured to be in pressure contact. Both side walls (6, 6) of the second member have an extension wall (14) extending downward from the outward rib (13), and a notch groove (15) is formed at the lower end of the extension wall Yes,
When the outward rib (13) is inserted into the fitting space (10), the lower edge (10a) of the lower window portion is inserted and locked in the notch groove (15). The connection structure of the crosswise cross member according to claim 1, 2 or 3.

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