JP6936141B2 - Connection structure of sideways crossing members - Google Patents

Description

The present invention relates to a connecting structure of a main rail for constructing a warehouse rack and laterally crossing members such as horizontal beams.

For example, a connecting device using a pin or a metal fitting is provided for connecting two members for constructing a rack in a laterally intersecting state.

Japanese Unexamined Patent Publication No. 2001-187616

For example, when constructing a rack for a three-dimensional automated warehouse, when using a connecting device composed of pins and metal fittings, it is necessary to assemble the connecting device at an extremely large number of intersections, so the cost is high. This will force a long working effort.

Therefore, a structure that does not require such a connecting device and allows both members to be connected by opening a window portion in one of the pair of intersecting members and fitting the other member into the window portion. It is desirable to use.

However, in this case, the fitting work for connection can be completed with one touch and the work efficiency is high, the connecting state after fitting is reliable and there is no risk of accidental separation, and the connecting state is good, that is, , It is an important issue not to have rattling.

The present invention provides a connecting structure of laterally crossing members that solves the above problems, and the first member made of steel having a hollow cross section having an upper wall and both side walls is configured as a means thereof. And, in a state where the second steel members having a groove shape with a downward cross section are arranged so as to intersect each other from the lateral direction, both side walls of the second member are fitted downward from the top into the fitting window portion opened in the first member. By doing so, the structure is such that the first member and the second member are connected, and the fitting window portion communicates with each other the upper window portion that opens to the upper wall of the first member and the lower window portion that opens to the side wall. By projecting the claws inward from both side edges of the lower window, the upper edge of the claws forms a guide edge that extends downward in an inwardly inclined state, and the lower edge forms a guide edge. A locked edge that intersects the guide edge at a sharp angle is formed, a fitting space is provided between the locked edge and the lower edge of the lower window portion, and both side walls of the second member are the said. The outward rib that is fitted into the fitting space of the lower window portion and the inward rib that fits the claw portion are bent and formed, and are fitted to the locked edge of the claw portion by the upper wall of the outward rib. Along with forming a locking wall to be worn, a guide wall extending downward in an inwardly inclined state is formed by a side wall, and both side walls of the second member are placed on the fitting window portion of the first member from top to bottom. When press-fitted, the guide wall is passed along the guide edge through inward deformation of both side walls so that the outward ribs enter the fitting space and both sides inside the fitting space. The point is that the locking wall is configured to be fitted to the locked edge via an outward restoring force of the wall.

The upper wall of the first member has a cross-sectional trapezoidal shape including a top wall and slanted walls extending from the top wall to both side walls, and the upper window portion of the fitting window portion is opened to the slanted wall. Therefore, when both side walls of the second member are press-fitted downward from above into the fitting window portion of the first member, the guide wall of the outward rib becomes an oblique edge along the inclined wall of the upper window portion. It is preferable that the lower window portion is entered through the inward deformation of both side walls by being pressed inward along the line.

In a preferred embodiment of the present invention, the outward rib of the second member is provided with a support portion located below the guide wall and is connected to the lower edge of the lower window portion to form the fitting space. The height dimension H1 from the lower edge of the lower window portion to the locked edge is H1 <H2. When the outward rib is fitted into the fitting space, the locking wall is compressed downward so that the locking wall is pressed against the locked edge.

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

According to the present invention, regarding the connection between the first member 1 and the second member 2 that are cross-arranged, the second member 2 does not require a conventional connecting device and is provided in the fitting window portion provided in the first member 1. By fitting the walls 6 and 6 on both sides of the window, there is an effect that it is possible to perform a highly efficient connection work by one-touch fitting work, a reliable connection state after fitting, and a good connection state without rattling. ..

It is a perspective view which illustrates the crossing member connected by the connection structure of this invention. It is a perspective view which shows the state before connecting the 1st member and the 2nd member. It is a perspective view which shows the fitting window part opened in the 1st member, and the cross-sectional part of the 2nd member fitted in the fitting window part in the separated state with respect to 1 Embodiment of this invention. Regarding one embodiment of the present invention, (A) is a perspective view showing a state in which the end of the second member faces the fitting window of the first member, and (B) shows the fitting window of the second member. It is a perspective view which shows the state which the end part was fitted and the connection was completed. It is explanatory drawing which shows the relationship of the structure about the fitting window part of the 1st member, and the structure about both side walls of a 2nd member. Regarding the action, it shows a state in which the outward rib faces the upper window portion, (A) is an overall view seen from the cross-sectional direction of the second member, and (B) is a partially enlarged view. Regarding the action, the outward rib is pressed inward along the oblique edge of the upper window portion, (A) is an overall view seen from the cross-sectional direction of the second member, and (B) is a partially enlarged view. It is a figure. Regarding the action, the outward rib is pressed inward along the guide edge of the claw portion, (A) is an overall view seen from the cross-sectional direction of the second member, and (B) is a partially enlarged view. Is. Regarding the action, it shows a state in which the outward rib has entered the fitting space, (A) is an overall view seen from the cross-sectional direction of the second member, and (B) is a partially enlarged view. Regarding another embodiment of the present invention, an embodiment in which the fitting window portion of the first member is configured by a single opening is shown, and FIG. B) is a perspective view showing a connected state.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

(1st member and 2nd member)
As shown in FIGS. 1 and 2, for example, in a rack such as a rack for a three-dimensional automated warehouse, horizontal beams 2a intersecting the main rails 1a and 1b arranged in parallel at predetermined intervals are provided at predetermined intervals. It is constructed by arranging them in parallel and connecting the ends of the horizontal beams 2a to the 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 connection device composed of pins and metal fittings as in the conventional case is not used. By fitting the second member 2 into the fitting window portion opened in the first member 1, a connecting structure capable of being connected is provided.

As shown in the figure, the first member 1 is formed by bending a thick steel plate to cut a long body having a hollow cross section having an upper wall 3 and both side walls 4 and 4 to a predetermined length. The upper wall 3 is preferably in the shape of a trapezoidal cross section including a top wall 3a and a slanted 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 the present invention is not limited to this.

On the other hand, the second member 2 is formed by bending a relatively thin steel plate to form a long body having a groove shape with a downward cross section in which side walls 6 and 6 are vertically provided from a flat upper wall 5 to a predetermined length. It is configured by cutting, and the side walls 6, 6 are bent so as to form outward ribs and inward ribs, which will be described later.

(Overall configuration of connected structure)
As shown in FIG. 3, the connecting structure for connecting the end portion of the second member 2 to the predetermined portion of the first member 1 includes a fitting window portion 7 opened in the first member 1 and the fitting window portion. It is composed of side walls 6 and 6 of the second member 2 which is fitted downward with respect to 7.

In the case of the illustrated embodiment, the fitting window portion 7 is composed of a pair of left and right fitting window portions 7L and 7R corresponding to the side walls 6 and 6 of the second member 2, but will be described later based on FIG. As described above, it is possible to configure the second member 2 with a single fitting window portion 7 capable of accepting both side walls 6 and 6. Therefore, in the following description, the entire left and right fitting window portions 7L and 7R are regarded as one fitting window portion 7, and the outer edges located on both sides thereof (that is, the left edge of the left fitting window portion 7L). And the right edge of the fitting window 7R on the right) are referred to as "both edges".

The fitting window portion 7 is formed by communicating the upper window portion 7a opening to the inclined wall 3b and the lower window portion 7b opening to the side wall 4 with each other. Therefore, both side edges of the upper window portion 7a form a slanted edge 8 that is inclined along the slanted wall 3b, respectively.

The lower window portion 7b is provided with claw portions 9 protruding inward from both side edges. As shown in the drawing, the claw portion 9 is preferably provided so as to face the folding curve 4a of the inclined wall 3b and the side wall 4, and is located below the claw portion 9 so that the lower window portion 7b is overhanging. It is enlarged to form a fitting space 10.

As described above, the oblique edges 8 and 8 on both side edges of the fitting window portion 7, the claw portions 9 and 9, and the fitting spaces 10 and 10 are formed symmetrically as shown in the drawing.

On the other hand, the side walls 6 and 6 of the second member 2 are located at the hanging wall 11 bent downward from both side edges of the upper wall 5 and the claw portion located at the lower end of the hanging wall 11, respectively. From the inward rib 12 that allows the 9 to be fitted, the outward rib 13 that is connected to the lower side of the inward rib 12 so that it can be fitted into the fitting space 10, and the outward rib 13. The extension wall 14 extended downward is formed by bending. In the illustrated embodiment, fins 14a are bent outward on the lower edge of the extension wall 14.

The hanging walls 11, 11, the inward ribs 12, 12, the outward ribs 13, 13 and the leg walls 14, 14 in the side walls 6, 6 of the second member 2 as described above are as shown in the figure. The side walls 6 and 6 having such a cross-sectional shape are formed in a symmetrical shape, and extend in the longitudinal direction together with the upper wall 5 to form a long second member 2. Therefore, it is located at the end 2E and cut into the extension walls 14 and 14 so as to form 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. The notch groove 15 is formed.

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

Since the notch groove 15 is locked to the lower edge 10a of the fitting window portion 7, the end portion 2E of the second member 2 does not escape from the fitting window portion 7 in the longitudinal direction, and moreover. Since the outward ribs 13 and 13 are fitted in the fitting spaces 10 and 10, they do not escape from the fitting window 7 upward. Incidentally, when constructing a rack as shown in FIG. 1, the second member 2 is connected between the two first members 1 and 1 which are fixedly installed in an intervening state. Therefore, in this case, the notch is described. The groove 15 is not always necessary.

(Characteristic structure of connected structure)
A preferred embodiment of the present invention has a characteristic configuration as shown in FIGS. 5 to 9, whereby a highly efficient connection work by one-touch fitting work, a reliable connection state after fitting, and a reliable connection state after fitting can be obtained. It enables a good connection state without rattling.

As shown in FIG. 5, the interval width dimension W1 of the oblique edges 8 and 8 of the upper window portion 7a and the outer spacing dimension W2 of the hanging walls 11 and 11 of the second member 2 are formed so that W1 ≧ W2. There is. The outer spacing dimension W3 of the outward ribs 13 and 13 and the inner spacing dimension W4 of the fitting spaces 10 and 10 are formed in W1 <W3 ≦ W4. The distance dimension W5 of the outer method of the extension walls 14 and 14 is preferably such that the extension wall 14 can be easily inserted into the lower window portion 7b without interfering with the claw portion 9, and the inner method of the claw portions 9 and 9 is used. W5 <W6 is formed with respect to the interval dimension W6.

The claw portion 9 projecting from the side edge of the lower window portion 7b forms a guide edge 9a extending downward in an inwardly inclined state on the upper edge, and is covered on the lower edge at an acute angle with the guide edge 9a. It forms a locking edge 9b. The inward rib 12 of the side wall 6 of the second member 2 is bent so as to be able to fit the claw portion 9 having such a shape, and is continuously provided under the inward rib 12. The outward rib 13 is bent so as to be fitted into the fitting space 10, and is fitted to the locked edge 9b by the upper wall forming the continuous portion of the inward rib 12. Along with forming the wall 13a, a guide wall 13b extending downward in an inwardly inclined state is formed by a side wall bent downward from the locking wall 13a, and further extending from the lower end of the guide wall 13b. A support wall 13c extending inward toward the wall 14 is formed.

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

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

In such a configuration, the height dimension H1 to the lower edge 10a forming the fitting space 10 and the locked edge 9b, and the height of the outer method from the tangent portion 16 of the outward rib 13 to the locking wall 13a. The dimension H2 is formed so that 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, in the end portion 2E of the second member 2, the extension walls 14 and 14 of the side walls 6 and 6 are inserted from the upper window portion 7a into the lower window portion 7b, and the outward ribs 13 and 13 are inserted into the upper window portion. When the outer ribs 13 and 13 are fitted into the fitting spaces 10 and 10 by press-fitting the lower window portion 7b by pressing strongly downward while being placed on the oblique edges 8 and 8 of 7a, the first ribs 13 and 13 are fitted into the fitting spaces 10 and 10. It is connected to the member 1.

As shown in FIG. 6, when the upper wall 5 of the second member 2 is strongly pressed from the state where the outward ribs 13 and 13 are placed on the oblique edges 8 and 8, as shown in FIG. 7, the outward rib 13 The guide wall 13b is pressed inward along the oblique edge 8, and the outward rib 13 can be made to enter toward the claw portion 9 while deforming the hanging wall 11 inward.

When a downward pressing force is continuously applied to the second member 2 from the state where the outward rib 13 faces the claw portion 9, the guide wall 13b of the outward rib 13 causes the guide edge 9a of the claw portion 9 as shown in FIG. The outward rib 13 can be made to enter toward the fitting space 10 while being pressed inward along the line and further deforming the hanging wall 11 inward.

When the outward rib 13 is released from the inward pressing force by passing through the claw portion 9, it immediately enters the fitting space 10 and is fitted by the outward restoring force of the hanging wall 11. At this time, as shown in FIG. 9, the outward rib 13 is locked while compressing the locking wall 13a downward in a state where the contact portion 16 is in contact with the lower edge 10a of the fitting space 10. It is fitted into the fitting space 10 along the edge 9b. Incidentally, if the outward rib 13 does not enter the fitting space 10 only by the outward restoring force of the hanging wall 11, the upper wall 5 may be pressed more strongly with the bearing portion 16 tangent to the lower edge 10a. Since the locking wall 13a is compressed and deformed downward via the inward rib 12, the outward rib 13 can be fitted into the fitting space 10.

As a result, as shown in the drawing, the outward rib 13 is fitted by pressing the upper locking wall 13a against the locked edge 9b in a state where the lower bearing portion 16 is brought into contact with the lower edge 10a. Since it is worn, a bonded state that does not cause rattling can be obtained inside the fitting space 10.

(Another embodiment)
In the above embodiment, an example in which the fitting window portion 7 is composed of a pair of left and right fitting window portions 7L and 7R is shown. However, as described above, the fitting window portion 7 is formed on both side walls of the second member 2. It may be configured by a single opening that allows the 6 and 6 to be accepted, and can be provided as another embodiment as shown in FIG.

1 1st member 1a, 1b Main rail 2 2nd member 2a Horizontal beam 2E End 3 1 Upper wall 3a Top wall 3b Slanted wall 4 1st member side wall 4a Folded curve 5 2nd member upper wall 6 Side wall 7 of the second member 7 Fitting window 7L Left fitting window 7R Right fitting window 7a Upper fitting window 7b Lower fitting window 8 Oblique edge 9 Claw 9a Guide edge 9b Locked Edge 10 Fitting space 10a Lower edge 11 Hanging wall 12 Inward 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 Branch

Claims (4)

A first member (1) made of steel having a hollow cross section and an upper wall (3) and a side wall (4) and a second member (2) made of steel having a groove shape having a downward cross section are laterally lateral to each other. The first member and the second member are formed by fitting the side walls (6, 6) of the second member downward from the top into the fitting window portion (7) opened in the first member in a state of being cross-sectionally arranged from the direction. It is a structure that connects
The fitting window portion (7) is formed by communicating the upper window portion (7a) opening to the upper wall of the first member and the lower window portion (7b) opening to the side wall with each other, and the lower window portion. By projecting the claw portion (9) inward from both side edges of (7b), a guide edge (9a) extending downward in an inwardly inclined state is formed by the upper edge of the claw portion, and the lower edge forms a guide edge (9a). A locked edge (9b) that intersects the guide edge at a sharp angle is formed, and a fitting space (10) is provided between the locked edge and the lower edge of the lower window portion.
The side walls (6, 6) of the second member have an outward rib (13) fitted into the fitting space (10) of the lower window portion and an inward rib (9) into which the claw portion (9) is fitted. (12) is bent to form a locking wall (13a) fitted to the locked edge (9b) of the claw portion by the upper wall of the outward rib, and an inwardly inclined state is formed by the side wall. Forming a downwardly extending guide wall (13b)
When both side walls (6, 6) of the second member are press-fitted downward from above into the fitting window portion (7) of the first member, the guide wall (13b) is placed on both sides along the guide edge (9a). By passing through the inward deformation of the wall, the outward rib (13) enters the fitting space (10), and inside the fitting space, through the outward restoring force of both side walls. A connecting structure of laterally crossing members, characterized in that the locking wall (13a) is fitted to the locked edge (9b). The upper wall (3) of the first member is formed by bending the top wall (3a) and the inclined wall (3b) from the top wall to the side wall, and the upper window portion (7a) of the fitting window portion is formed. It has an opening in the sloping wall (3b),
When both side walls of the second member are press-fitted downward from above into the fitting window portion of the first member, the guide wall (13b) of the outward ribs has an oblique edge (3b) along the inclined wall (3b) of the upper window portion. The lateral crossing member according to claim 1, wherein the lateral crossing member is configured to enter the lower window portion through inward deformation of both side walls by being pressed inward along 8). Connection structure. The outward rib (13) of the second member includes a branch (16) located below the guide wall (13b) and tangent to the lower edge (10a) of the lower window.
The tangent portion (13) 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 locked 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) becomes the locked edge (9b). The connecting structure for laterally crossing members according to claim 1 or 2, wherein the members are configured to be pressure-welded. Both side walls (6, 6) of the second member include 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. And
When the outward rib (13) is fitted into the fitting space (10), the lower edge (10a) of the lower window portion is configured to be inserted and locked in the notch groove (15). The connecting structure of the laterally crossing members according to claim 1, 2 or 3.

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