JP3299719B2 - Strut fixed type storage shelf - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a storage shelf which is arranged along a wall surface and is installed and fixed in a state of being stretched between a ceiling and a floor surface.

[0002]

2. Description of the Related Art A storage rack of this type is provided with an actual open flat 7-3076.
No. 3, there is an upper frame and a lower frame formed in a U-shaped cross section, a tension mechanism disposed at the upper end of the upper frame,
It is made up of shelves and the like that are hung in both frames. The lower part of the upper frame is nested and connected to the upper part of the lower frame,
The entire height of the shelf can be changed and adjusted within a certain range. The strut mechanism includes a top plate fixed to the upper end of the upper frame, a pressing body guided to the top plate so as to be able to move up and down, a bolt provided between the top plate and the pressing body to operate the pressing body up and down, It consists of a hat-shaped receiving frame fixed to the upper surface of the plate and a nut fixed to the receiving frame.

In the above-mentioned tension mechanism, the bolt moves up and down along with the vertical movement of the pressing body. Therefore, the lower end of the bolt projects to the lower surface of the top plate, depending on the amount of projection of the pressing body,
It may interfere with storage on the top shelf. Or, conversely, the lower end of the bolt enters above the operation hole provided in the top plate, and the screwing operation of the bolt becomes difficult. In order to avoid such inconvenience in use, the present inventor has studied a tension mechanism in which a female screw is provided on the pressing body side, and the lower part of the bolt is rotatably supported by the top plate only rotatably. According to this,
Only the operation head of the bolt is exposed on the lower surface of the top plate, but the bolt itself does not move up and down.

[0004]

As described above, in the tension mechanism in which the lower portion of the bolt is rotatably supported by the top plate,
The reaction force of the screw is concentrated on the retaining ring and washer attached to the lower part of the neck. Therefore, when the bolts are sufficiently screwed in and the entire shelf is stretched and fixed, the peripheral wall of the bolt support portion of the top plate may be bent downward and deformed, thereby impairing the appearance. When the thickness of the top plate is small, if the tension exceeds a certain value, the range of deformation of the top only extends to the peripheral area, and the shelf may not be fixed with sufficient tension. If the thickness of the steel plate forming the top plate is increased, a top plate that can withstand the tension of the shelf can be obtained, but the material cost and the processing cost are high, and the increase in the shelf weight cannot be avoided.

SUMMARY OF THE INVENTION An object of the present invention is to provide a tension mechanism in which a screw shaft is rotatably supported by a top plate, thereby eliminating the concentration of a load on the screw shaft supporting portion of the top plate and moving the shelf between the ceiling and the floor. An object of the present invention is to improve the external appearance of the shelf by firmly stretching and fixing it between the tops, and preventing the top plate from bending and deforming downward in this fixed state. Another object of the present invention is to make the top plate from a thinner steel plate when the tension force at the time of shelf assembly is constant, and to reduce the material cost and the processing cost of the top plate by that much. To manufacture the shelves at a lower cost.

[0006]

According to the present invention, as shown in FIG. 2, a strut-fixed storage shelf is provided with a top plate 3 fixed to the upper end of the shelf.
A tension mechanism T is provided on the upper part of the table to abut the ceiling and press the shelf toward the floor. As shown in FIG. 1, the tension mechanism T includes a pressing member 22 disposed above the top plate 3, a female screw member 25 provided on a passive frame 23 disposed on the inner surface of the pressing member 22, a female screw member 25 and the passive frame 2.
And a screw shaft 24 for vertically moving the pressing body 22 through the screw shaft 3. The screw shaft 24 is provided with a screw portion 3 that engages with the female screw body 25.
0, an operation unit 32 exposed on the lower surface of the top plate 3, and an operation unit 3
And an engagement shaft portion 31 provided above the second engagement shaft portion. On the upper surface of the top plate 3, there is provided a screw holder 33 for receiving the screw shaft 24 and dispersing a screwing reaction force acting on the screw shaft 24. The screw receiver 33 is provided with a base portion 34 that contacts the upper surface of the top plate 3.
And a connecting portion 36 fixed to the top plate 3. An engagement hole 37 provided in the base portion 34 is engaged with the engagement shaft portion 31 to support the screw shaft 24 rotatably but immovably in the axial direction.

More specifically, an engagement shaft portion 31 having a smaller diameter than the screw portion 30 and an operation portion 32 having a larger diameter than the screw portion 30 are provided at the lower end of the screw portion 30. The top plate 3 has an assembling hole 38 through which the screw portion 30 is inserted, and a receiving hole 39 which engages with the engagement shaft portion 31.
Are formed continuously (see FIG. 7). The screw holder 33 is
It is formed of a press fitting in which the base portion 34 and the connecting portion 36 are integrally bent. The engagement hole 37 provided in the base portion 34 is, as shown in FIG.
a and a second engagement hole 37b that engages with the engagement shaft portion 31. In a state where the connecting portion 36 is fastened and fixed to the peripheral side wall 3a of the top plate 3 with the screw 41, the engaging shaft portion 31 of the screw shaft 24 is
Are fixedly engaged with the second engagement hole 37b and the receiving hole 39 so as not to be movable in the radial direction.

The connecting portion 36 of the screw holder 33 is fixed to the left and right peripheral side walls 3a of the top plate 3 fastened to the side frame 1 with screws 41.

[0009]

The screw shaft 24 is rotatably engaged with and supported by the screw holder 33, and the screwing reaction force acting on the screw shaft 24 is transmitted to the top plate 3 via the screw holder 33 in a dispersed state. The reaction force can be prevented from being concentrated on the wall surface of the top plate around the screw shaft 24. At this time, the base portion 3 which contacts the top plate 3
4 disperses the load by the area thereof, and the peripheral side wall 3a of the top plate 3 and the connecting portion 36 fixed thereto prevent the bending deformation of the top plate 3 against the screwing reaction force. The shelves can be stretched and fixed with strong force.

The engagement shaft portion 31 is rotatably engaged and held only by a screw receiving member 33, and is further engaged with a receiving hole 39 provided on the top plate 3 and a second engaging hole 37 b of the screw receiving member 33. Since the shaft portion 31 is fixedly engaged so as not to move in the radial direction, the screw shaft 24 is reliably prevented from tilting with respect to the top plate 3 and the screw receiving member 33, and the screwing reaction force is reduced. The load can be distributed effectively by uniformly acting on the base portions 34 of the 33.

The connecting portion 36 is connected to the left and right peripheral side walls 3 of the top plate 3.
When the screw a is fixed to a, the screwing reaction force can be applied to the side frame 1 via the top plate 3, so that the load resistance of the top plate 3 against the screwing reaction force can be further enhanced.

[0012]

1 to 7 show an embodiment of a storage shelf according to the present invention. In FIG. 2, the storage shelf is a pair of left and right side frames 1.
1 and a number of shelves 2 which are hung and fixed between both side frames 1.1
, A top plate 3 and a bottom plate 4 provided at the upper and lower ends of both side frames 1 and 1, and a tension mechanism T provided above the top plate 3.

Each of the left and right side frames 1 is composed of an upper frame 5 and a lower frame 6 which are nested and connected in the upper half in the vertical direction, and the weight of the side frames 5, 6 is changed. By that
The height of the entire shelf can be changed and adjusted. The lower frame 6 has two equal-length frames 6a.
6a, and the upper and lower lengths of the upper frame 5 are set to the same length as the frame 6a.

In FIG. 3, the upper frame 5 is formed of a hollow frame-shaped steel plate molded article, and has a U-shaped cross section 7 formed in the front and rear of the frame side wall opposed to the left and right, respectively. In the groove bottom wall, hook holes 9 for hooking a shelf support 15 (see FIG. 5) described later are provided at regular intervals. Hook hole 9
Are formed in the shape of a rectangular groove that is long in the vertical direction. The lower frame 6 is composed of a pair of upper and lower frame bodies 6a, and each frame body 6a is formed as a hollow frame having the same cross-section as the upper frame body 5; The width is set to be slightly smaller than the front-rear width and the inner width width so that the upper frame body 5 can be inserted into and removed from the space in the frame. However, the front-rear pitch of the groove 7 is made to match the front-rear pitch of the groove 7 of the upper frame body, and the hook holes 9 for the shelf holders 15 pass through the groove bottom wall at the same pitch. Therefore, in a state where the frame 6a is overlapped and connected to the upper frame 5, the shelf receiver 15 can be hung without any trouble in the hook holes 9 at the overlapped portion.

The upper and lower frames 6a, 6a are connected via a joint fitting 10 which is fitted in the inner surface of each joint. In a state where the shelf is stretched and fixed between the ceiling and the floor,
In order to prevent the connection between the two frame members 6a and 6a from being bent in a U-shape, the connection fitting 10 is constituted by a hollow frame in which square plates are joined in a lid-like manner as shown in FIG. Length (more than 20cm). Also, connection fitting 1
A rectangular bulge 10a is provided near the four corners of the opposing side surface 0 so that the two fittings 6a and 10 can be engaged without looseness when the connection fitting 10 is fitted inside the frame 6a. . In addition, the connection fitting 10 is provided with grooves 7 in front and rear of the frame body 6a.
・ Three bolts 8 which are inserted between 7 and screwed from the left and right frame side walls of each frame 6a are firmly fastened and fixed to the frame 6a.

In order to improve the frame strength when the storage shelves are assembled, the upper ends of the left and right side frames 1.1 are connected by a top plate 3 and the lower ends thereof are connected by a bottom plate 4. Top 3
As shown in FIG. 6, it is made of a square box-shaped steel panel that opens upward, and the upper edges of the front, rear, left, and right peripheral side walls 3a are each bent inward and then turned inward, so that the rectangular shape defined by the peripheral side walls 3a is A slightly smaller guide opening 12 is formed on the upper surface. As shown in FIG. 2, the top plate 3 is integrated with the left and right side frames 1 and 1 by fastening the front and rear of the left and right peripheral side walls 3a with bolts screwed from the outside of the side frame 1. The bottom plate 4 is made of a steel panel having the same width as the top plate 3 and opening downward, and is integrated with the side frame 1 with bolts screwed from outside the side frame 1 like the top plate 3.

The shelf plate 2 is made of a thin rectangular box-shaped steel plate panel that opens downward, and as shown in FIG. 5 and FIG. The lower ends of the peripheral walls of the shelf 2 are folded back inward. Of these folded walls, the folded wall that is continuous with the left and right peripheral walls is used as the mounting wall 14, and the shelf holder 15 that is hooked to the side frame 1 is used as the mounting wall 14.
To engage and support it so as to hold it from below.

In FIG. 5, the shelf holder 15 is provided with the placing wall 1 described above.
A press fitting having a U-shaped receiving frame portion 16 for engaging and supporting the 4 from the lower surface side, and a latching arm 17 continuously and orthogonally bent on one side wall of the receiving frame portion 16. An upper claw 18 and a lower claw 19 which are hooked on the upper and lower edges of the opening inside the hook hole 9 are provided above and below the side end of the hook arm 17. The vertical dimension between the protruding ends of the claws 18 and 19 is larger than the vertical dimension of the locking hole 9. Upper nail 1
With the hook 8 as the insertion start end, the hook arm 17 is inserted obliquely into the hook hole 9, and the lower end of the hook arm 17 is received by the lower end of the hook hole 9 after the lower claw 19 enters the hole. The receiving tool 15 can be supported horizontally. At this time, the upper claw 18 comes into contact with the upper peripheral wall of the hook hole 9 and receives the tilting moment of the shelf holder 15. In addition to supporting the shelf board 2, the shelf holder 15 is hooked by a hook hole 9 on the lower frame 6 side located at the overlapping connection portion between the upper frame 5 and the lower frame 6, and the upper frame 5 is held. It is also used as a fixing bracket that receives and supports it so that it cannot move downward.

In FIG. 6, the tensioning mechanism T is a rectangular box-shaped pressing body 22 having an open lower surface, a passive frame 23 disposed on the inner surface of the pressing body 22, and vertically moving the pressing body 22 through the passive frame 23. It consists of a screw mechanism. The four side walls of the pressing body 22 are folded inward and reinforced with double walls, and the whole is accommodated in the top plate 3 and is guided and supported by the guide opening 12 so as to be able to move up and down. The screw mechanism comprises two left and right screw shafts 24 rotatably supported by the top plate 3 and not relatively movable in the axial direction, and female screw bodies welded to two left and right portions on the upper surface of the bottom wall of the passive frame 23. 25 or the like.

As shown in FIG. 6, each passive frame 23 has a hat-shaped cross-section in which a pair of base walls 27 and 28 are horizontally formed at the front and rear ends of a main frame 26 having a U-shaped cross-section opening upward. And is provided between the left and right sides of the inner surface of the pressing body 22. The passive frame 23 is bonded and fixed to the upper surface wall of the pressing body 22 via a double-sided tape bonded to both base walls 27 and 28. As shown in FIG. 2, in the case where the pressing body 22 is pressed against the stepped wall H near the ceiling and the shelf is stretched and fixed, the center position of the screw shaft 24 is located on the rear side of the shelf more than the front-rear center of the top plate 3. It is deviated to the side.

In FIG. 7, the screw shaft 24 has a female screw 25
Screw part 30 to be screwed into the
A neck portion 30a having a diameter larger than 0 is provided, and an engagement shaft portion 31 having a smaller diameter than the screw portion 30 is provided in the middle of the neck portion 30a in the vertical direction.
Further, an operation portion 32 having a larger diameter than the neck portion 30a is provided at a lower end of the neck portion 30a. The screw shaft 24 is received and supported by a screw holder 33 arranged on the upper surface of the top plate 3. The operation part 32 is formed in a screw head shape, and a cross-shaped or one-character-shaped operation groove is formed on a lower surface thereof.

The screw holder 33 is formed by a U-shaped press fitting having a base portion 34 long before and after contacting the upper surface of the top plate 3 and a pair of end walls rising upward from the front and rear ends of the base portion 34. Become. A burring screw hole 35 is provided in the end wall behind the shelf among the pair of end walls, and this is connected to the connecting portion 3.
6 is assumed. An engagement hole 37 for engaging and supporting the engagement shaft 31 of the screw shaft 24 is provided in the plate surface of the base 34. The engagement hole 37 has a first engagement hole 37a slightly larger in diameter than the neck portion 30a.
And the second engagement hole 37b slightly larger in diameter than the engagement shaft portion 31 are formed in a continuous so-called daruma hole shape.

An insertion hole for passing the screw shaft 24 is provided in both walls of the top plate 3 corresponding to the hole center of the female screw body 25 provided in the passive frame 23. As shown in FIG. 7, this insertion hole is formed of a daruma hole having the same shape and the same size as the engagement hole 37,
An assembling hole 38 through which the screw part 30 and the neck part 30a can be inserted.
And a receiving hole 39 that engages with the engagement shaft 31. However, in the screw holder 33, the large-diameter first engagement hole 37a is provided behind the second engagement hole 37b on the shelf side (wall surface side), whereas in the top plate 3, the large-diameter assembly hole 38 is provided. Is provided in front of the shelf from the receiving hole 39 so that the direction of the daruma hole is reversed, and the center of the receiving hole 39 is located immediately below the female screw body 25.

The screw shaft 24 and the screw holder 33 are assembled as follows. First, the screw shaft 24 is inserted into the mounting hole 38 from below, and the entire shaft is slid rearward of the shelf to temporarily assemble the engaging shaft portion 31 into the receiving hole 39. Next, the first fitting hole 37a of the screw holder 33 is externally fitted to the screw portion 30, and the base portion 34 is
Layer on. In this state, push up the screw shaft 24 upward,
The second fitting hole 37b is engaged with the engagement shaft portion 31 while sliding the screw receiver 33 backward of the shelf, and the second fitting hole 37b is engaged.
And the receiving hole 39 engage and hold the engagement shaft portion 31 so as to be immovable in the radial direction. Thereby, the screw shaft 24 is rotatable with respect to the top plate 3 but is supported so as not to move in the axial direction. In this state, the connecting portion 36 of the screw receiving member 33 comes into contact with the rear peripheral side wall 3a on the rear side of the top plate 3. Therefore, the screw 41 is screwed into the screw hole 35 from the outer surface side of the peripheral side wall 3a.
Is integrated with the top plate 3.

Next, the procedure for assembling the storage shelves will be described. First, the left and right lower frames 6.6 are assembled by connecting the frames 6a, and the bottom plate 4 is fastened between the lower ends thereof. Similarly, the top plate 3 is fastened between the upper ends of the pair of upper frames 5, and the screw shaft 24 and the screw holder 33 are assembled to the top plate 3 in the manner described above. Further, the pressing body 22 having the passive frame 23 integrated therewith is assembled inside the top plate 3, and the screw shaft 24 is screwed into the female screw body 25. Next, the upper frame 5 is inserted into the upper part of the lower frame 6 so as to be externally fitted, and temporarily assembled.
At a position where the length from the lower end of the lower frame 6 to the upper end of the pressing body 22 is lower than the height of the stepped wall H or the ceiling in FIG.
5 is hooked into a hook hole 9 of the lower frame 6. As a result, the lower end of the upper frame 5 is received by the shelf receiver 15 and cannot be moved below the position defined by the shelf receiver 15. The side frame 1 in this state stands up and follows the wall as shown in FIG. 2 to perform positioning in the front-back and left-right directions. After this, screw shaft 2
4, the pressing body 22 is advanced above the top plate 3, and the upper surface thereof is pressed against the step wall H or the ceiling to stretch and fix the entire shelf frame. Finally, the shelf holder 15 and the shelf plate 2 are hung between the side plates 1.1 to complete the storage shelf. If necessary, lock the fall prevention bar between the side frames 1.1.

In the state where the shelf is stretched and fixed, a screwing reaction force acts on each of the left and right screw shafts 24, but this reaction force is applied to the left and right screw shafts via a screw holder 33 having a sufficiently large contact area as compared with a washer or the like. It is distributed and transmitted to the top 3. Therefore, it is possible to prevent the screwing reaction force from acting on the peripheral wall of the insertion hole of the top plate 3 in a concentrated manner, thereby preventing local plastic deformation of the plate surface due to concentration of the load and elastic deformation over a wide range due to excessive screwing. It can be reliably prevented. According to such a storage shelf, when the required strength of the top plate 3 is fixed, the thickness of the steel plate forming the top plate 3 can be reduced, and the material cost can be reduced accordingly.

Several types of storage shelves are prepared according to the difference in the left-right width. For example, left and right width dimensions are 45cm, 60c
Prepare shelves with a size of 75 cm and 75 cm so that they can flexibly respond to the situation of the shelves. When the shelf width is small, the tension mechanism T described in the above embodiment can be applied. However, when the shelf width increases, the left and right widths of the pressing body 22 and the passive frame 23 also increase, so that the pressing body 22 and the like become difficult to handle, and there is waste of material.

In order to prepare for the above case, a pair of left and right small width tension mechanisms T as shown in FIG. 8 are provided, and each mechanism T can be individually operated by the screw shaft 24. . At this time, the respective tension mechanisms T are connected to the left and right side frames 1.
When the top plate 3 is arranged as close as possible, the top plate 3 is fastened and fixed to the side frames 1, so that each side frame 1 can bear the screwing reaction force. In addition, the connecting portion 36 of the screw receiver 33
Is fastened to the peripheral side wall 3a of the top plate 3 on the side of the side frame 1 with screws 41, whereby the load resistance of the top plate 3 against the screwing reaction force can be further enhanced.

[0029] In addition to the above embodiments, the screw bracket as 33 can in an L-shape and the connecting portion 36 and at least the base portion 34
You . As long as the required area can be satisfied, the base portion 34 can be changed to an arbitrary shape such as a circle or a trapezoid, and may be fastened and fixed to the bottom wall of the top plate 3 with screws 41. 2 fastened to the peripheral wall 3a on the rear side of the top plate 3 and the peripheral wall 3a at the left and right ends
The individual connecting portions 36 can be provided orthogonal to the screw receiver 33. The engagement hole 37 does not necessarily need to be formed in a daruma hole shape, and the first engagement hole 37a can be formed in a long groove shape opened at a side edge of the base portion 34 . By omitting the neck portion 30a,
An engagement shaft portion 31 having a smaller diameter may be formed below the screw portion 30.

[0030]

According to the present invention, the screw shaft 24 for tensioning and fixing the shelf is engaged and held by the screw holder 33 provided on the upper surface of the top plate 3, and the screw shaft 24 is supported only for rotation. .
The screwing reaction force acting on the screw shaft 24 is dispersed and transmitted to the top plate 3 via the screw holder 33, and the screwing reaction force can be shared by the connecting portion 36 and the top plate 3. I did it. Therefore, the concentration of the load on the screw shaft supporting portion of the top plate 3 is eliminated, the deformation of the top plate 3 is prevented, and the storage shelf can be more firmly stretched and fixed as compared with a conventional shelf of this type. The shelf strength can be increased by the amount. In addition, since the withstand load of the top plate 3 can be increased, when the withstand load is constant, the top plate 3 can be formed with a thinner steel plate, and the material cost and the processing cost of the top plate 3 can be reduced accordingly. This is advantageous.

[Brief description of the drawings]

FIG. 1 is a sectional view taken along line AA in FIG.

FIG. 2 is a perspective view of a shelf.

FIG. 3 is a side view of the upper frame and a cross-sectional view taken along line BB.

FIG. 4 is a perspective view showing a connecting portion of a lower frame.

FIG. 5 is a vertical sectional front view showing a support structure of the shelf board.

FIG. 6 is a longitudinal sectional front view of the tension mechanism.

FIG. 7 is an exploded perspective view of a screw receiver and a screw shaft.

FIG. 8 is a front view showing another embodiment of the present invention relating to the tension mechanism.

[Description of sign]

 DESCRIPTION OF SYMBOLS 1 Side frame 2 Shelf board 3 Top plate 22 Pressing body 23 Passive frame 24 Screw shaft 25 Female screw body 30 Screw part 31 Engagement shaft part 32 Operation part 33 Screw holder 34 Base part 36 Connecting part 37 Engagement hole 37a Mating hole 37b Second engaging hole 38 Assembly hole 39 Receiving hole T Tension mechanism

Claims (2)

(57) [Claims] An upper portion of a top plate fixed to an upper end of a shelf is provided with a tensioning mechanism for contacting a ceiling and pressing the shelf toward a floor surface. Pressing body 22 arranged above 3
A female screw body 25 provided on a passive frame 23 disposed on the inner surface of the pressing body 22; and a screw shaft 24 for vertically operating the pressing body 22 via the female screw body 25 and the passive frame 23. A screw portion 30 meshing with the female screw body 25;
It is provided at the lower end of the screw portion 30 and has a larger diameter than the screw portion 30.
An operation unit 32 which is exposed on the lower surface of the top plate 3 I, threaded portion 30
An engagement shaft portion 31 having a smaller diameter and provided above the operation portion 32, and an assembling hole 38 through which the screw portion 30 can be inserted into the top plate 3;
The receiving hole 39 engaging with the shaft portion 31 is formed continuously.
In addition, a screw holder 33 for receiving the screw shaft 24 and dispersing the screwing reaction force acting on the screw shaft 24 is provided on the upper surface of the top plate 3. The screw receiver 33 is in contact with the upper surface of the top plate 3. Applicable base part 34
And the connecting portion 36 fixed to the top plate 3 are integrally bent.
Made from the press fitting has engaging hole 37 provided in the base portion 34, receives the threaded portion 30
The first engagement hole 37a to be inserted and the first engagement hole
The connecting portion 36 of the screw holder 33 is screwed to the peripheral side wall 3 a of the top plate 3.
In the state of being fastened and fixed at 41, the engagement shaft of the screw shaft 24
The part 31 is moved in the radial direction to the second engagement hole 37b and the receiving hole 39.
A fixed tension type storage shelf in which the screw shaft 24 is rotatably supported but immovably in the axial direction so as to be immovably engaged. 2. The connecting portion 36 of the screw holder 33 is connected to the side frame 1.
Screws 41 are attached to the left and right peripheral side walls 3a of the top plate 3 to be fastened.
The storage shelf of the tension fixed type according to claim 1, which is fixed .