JP3299701B2 - 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 arranged along a wall surface and fixedly installed between a ceiling and a floor in a state of being stretched.

[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 overall height can be changed and adjusted within a certain range.

The present applicant has previously made an improvement proposal regarding the above-mentioned tension mechanism (Japanese Patent Application No. 9-209978).
issue). In this case, as shown in FIG. 7, a pressing body 41 is supported on a top plate 40 so as to be vertically slidable, and the pressing body 41 is vertically operated by a screw mechanism. The screw mechanism includes a pressing body 4
1, a passive frame 42 having a hat-shaped cross section disposed on the inner surface thereof, a nut 43 fixed to the passive frame 42, and a bolt 44 threaded from the lower surface of the top plate 40 and screwed into the nut 43. Regardless of the change in the vertical position of the body 41,
The operation head of the bolt 44 is always held at the lower surface of the top plate. In this case, the center position of the bolt 44 in the front-rear direction is set at the center of the top plate 40 in the front-rear direction, and the front and rear edges of the pressing body 41 are evenly pushed up.

[0004]

In many cases, a fixed-type storage shelf is installed between the floor and the ceiling. However, if there is a stepped wall above the wall near the ceiling due to the projection of a beam or the like. In some cases, the pressing body 41 is applied to the step wall to stretch and fix the entire shelf (see FIG. 2). In such a case, since the overhang amount of the step wall H is smaller than the front-rear width of the shelf, only the rear edge of the pressing body 41 is received by the step wall. For this reason, when the bolt 44 is screwed in, the pressing body 41 is pushed upward from the stepped wall H and deformed as shown by the imaginary line in FIG. Depending on the amount of overhang of the step wall H, the pressing body 41 may be inclined in a forward-upward inclination, and the pressing body 41 may not be able to adhere to the step wall H, and the shelf may not be firmly stretched and fixed.

An object of the present invention is to securely and firmly secure the entire shelf even when the storage shelf is installed between a floor surface and a step wall near the ceiling. Another object of the present invention is to improve the structural strength of the pressing body by using the passive frame of the screw mechanism, and to prevent deformation of the pressing body due to excessive screwing of the screw mechanism at the time of tension fixing. .

[0006]

SUMMARY OF THE INVENTION A storage shelf according to the present invention comprises a pair of left and right side frames 1.1, a plurality of shelves 2 hooked and fixed to both side frames 1.1, and two side frames 1.1. And a tension mechanism T provided between the upper ends. The tensioning mechanism T is arranged above the top plate 3 fixed between the upper ends of the side frames 1.1.
A rectangular box-shaped pressing body 22, a passive frame 23 fixed to the inner surface of the pressing body 22, provided between the passive frame 23 and the top plate 3,
The screw mechanism includes a screw shaft 24 that vertically moves the pressing body 22 and a female screw body 25 that meshes with the screw shaft 24. The passive frame 23 has a pair of front and rear base walls 27 and 28.
It is formed of a hat-shaped cross-section frame and has a tension mechanism.
T pushes up the pressing body 22 via the passive frame 23.
It is configured so that: Then, the longitudinal direction of the screw shaft 24
Center position P is shifted to the rear side of the shelf from the center
And the screw shaft 24 is pushed up against the pressing body 22.
Force is applied to the back of the shelf.
You. Also, the front-rear width dimension of the front base wall 27 is
By forming it wider than the front-rear width of the base wall 28,
This equalizes the pushing force applied to the pressing body 22.
It is something that has been done.

[0007]

[0008] A female screw 25 is fixed to the passive frame 23, and a screw shaft 24 having an operation portion 30 at the lower end is screwed into the female screw 25 from the lower surface side of the top plate 3. The movement in the axial direction can be restricted by the retaining ring 32 and the operating portion 30 which are press-fitted to the screw portion sandwiched vertically.

[0009]

The center position P of the screw shaft 24 in the front-rear direction is the top plate 3
Is shifted toward the rear side of the shelf from the center of the front and rear, the action position of the lifting force by the screw mechanism shifts toward the rear of the pressing body 22. Accordingly, even when the pressing body 22 is pressed against and fixed to the step wall H near the ceiling, the upper wall of the pressing body 22 is pressed against the step wall H in a surface contact manner, and the entire shelf can be reliably fixed. The pressing body 22 is not bent upward by using the projecting end of the step wall H as a bending fulcrum.

When the passive frame 23 is formed of a hat-shaped cross-section frame and is provided between the left and right inner surfaces of the pressing body 22, the structural strength of the pressing body 22 can be improved. The passive frame 23 is biased toward the back side of the shelf from the center of the pressing body 22 in the front-rear direction according to the offset amount of the screw shaft 24. Therefore, the pushing force by the screw shaft 24 is limited to the upper wall 22 of the pressing body 22.
a tends to act on the latter half side of a. In order to alleviate this bias and to make the pushing force acting on the upper surface wall 22a of the pressing body 22 as uniform as possible, the front and rear width of the front base wall 27 is made wider than the front and rear width of the rear base wall 28. Has formed. The wide base wall 27 on the front side also serves to reinforce the top wall 22a.

[0011]

1 to 5 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, a number of shelves 2 which are hooked and fixed between both side frames 1.1, a top plate 3 and a bottom plate 4 provided at both upper and lower ends of both side frames 1.1, and provided above the top plate 3 It is composed of a tension mechanism T or the like.

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. This allows the height of the entire shelf to be changed and adjusted. In order to make the package at the time of shipment compact, the lower frame 6 is composed of two equal-length frames 6a and 6a.
a is connectable, and the vertical length of the upper frame 5 is
It is set to the same length as a.

In FIG. 3, the upper frame 5 is formed by bending a pair of left and right frame side walls, a frame front wall connecting front portions of both side walls, and a frame rear wall connecting rear portions of both side walls. It consists of a hollow frame-shaped steel sheet molded product. The frame rear wall is formed by bending and joining rear walls that are continuous with the left and right frame side walls, and the fly-jointed portion serves to increase the strength of the frame.

In the upper frame 5, grooves 7 each having a U-shaped cross section are formed in front of and behind the pair of frame side walls in an indented manner. These four grooves 7 serve to increase the section modulus of the upper frame 5 and enhance its structural strength. In the groove bottom wall of each groove 7, a locking hole 9 for locking and mounting the shelf receiver 15 is provided at a constant pitch in the vertical direction. The hook hole 9 is formed in a vertically long rectangular groove shape.

The lower frame 6 comprises a pair of upper and lower frame members 6a.
Each frame 6a is formed as a hollow frame having the same cross-section as the upper frame 5, but its front-rear width and left-right width are set slightly smaller than the inner front-rear width and the inner left-right width of the upper frame 5. , So that it can be inserted into and removed from the space in the frame of the upper frame 5. 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. As shown in FIG. 2, the upper and lower frame members 6a, 6a cannot be separated from each other by screwing a bolt from one side outer surface of each frame member 6a into the connection member 10 after the fittings 10 are fitted inside the respective joints. To be integrated.
The connection fitting 10 is also formed with holes having the same shape as the hook holes 9 at the same pitch.

In order to improve the strength of the frame 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. The top plate 3 is made of a press-formed product in the shape of a square box that opens upward, and the upper edges of the front, rear, left, and right peripheral sidewalls are each bent inward and then turned inward, and are defined by the peripheral sidewalls as shown in FIG. A guide opening 12 slightly smaller than the square to be formed 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 screwing bolts from the outside of the side frame 1 around the left and right side walls thereof. The bottom plate 4 has the same width as the top plate 3 and is formed of a rectangular box-shaped press-formed product that opens 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 a fall prevention wall 13 is formed upright on its rear edge as shown in FIGS. Shelf board 2
At the lower ends of the left and right side walls, the mounting wall 14 is folded inward as shown in FIG. 4, and engaging grooves 16 which are engaged and supported by the shelf receivers 15 are provided at two positions before and after the mounting wall 14.

In FIG. 4, the shelf holder 15 is integrally formed such that the leg pieces 18 to be fitted in the hook holes 9 and the claw portions 20 which are internally fitted into the engagement grooves 16 of the shelf plate 2 from below are orthogonal to each other. It consists of a bent press-formed product. The leg piece 18 is provided with a groove 21 that engages with the lower peripheral wall of the retaining hole 9 in a downward opening shape. The leg piece 18 and the claw portion 20 are continuous via a triangular leg support piece 19. The shelf holder 15 supports the shelf 2,
Lower frame 6 located at the overlapped connection between upper frame 5 and lower frame 6
The upper frame 5 is also used as a fixing bracket for receiving and supporting the upper frame 5 so that it cannot move downward.

In FIG. 1, a tensioning mechanism T includes a rectangular box-shaped pressing member 22 having an open lower surface, a passive frame 23 fixed to the inner surface of the pressing member 22, and a vertical operation of the pressing member 22 via the passive frame 23. Screw mechanism. The four peripheral side walls of the pressing body 22 are folded inward and reinforced with double walls, and the entirety is housed in the top plate 3 so as to be movable up and down, and can be moved out and back through the guide opening 12. The screw mechanism is rotatable on the top plate 3,
The passive frame 23 is composed of two screw shafts 24 which are supported so as to be relatively immovable in the axial direction, and female screw bodies 25 which are welded to two places on the upper surface of the bottom wall of the passive frame 23.

Each of the passive frames 23 has a pair of base walls 27.
28 is formed of a hat-shaped cross-section frame that extends horizontally and is provided on the pressing body 22 across the left and right sides of the inner surface. The passive frame 23 is bonded and fixed to the upper surface wall 22a of the pressing body 22 via a double-sided tape bonded to both base walls 27 and 28.

As shown in FIG. 1, the center position P of the screw shaft 24 in the front-rear direction is determined by pressing the pressing body 22 against the stepped wall H near the ceiling to stretch and fix the shelf.
It is shifted more toward the back of the shelf than the center of the front and back. Specifically, when the front and rear width dimension of the top plate 3 is about 24 cm, and about 15 cm
In this case, the center position P is set near the rear edge of the top plate 3 so that the distance from the back of the shelf to the center position P is 50 mm. .

When the center position P is displaced in this manner, the pushing force of the screw shaft 24 is applied to the upper wall 22 of the pressing body 22.
It acts on the rear half of a. In order to alleviate this biasing tendency and to equalize the pushing force acting on the upper surface wall 22a as much as possible, the front-rear width of the front base wall 27 of the passive frame 23 is larger than the front-rear width of the rear base wall 28. Also set large enough. In this embodiment, when the front-back width of the rear base wall 28 is 15 mm, the front base wall 2
The front and rear width dimension of No. 7 was 45 mm. The base wall 27 also serves as a reinforcing material for the upper wall 22a because the front-rear width is large.

In FIG. 5, the screw shaft 24 has an operation portion 30 having a larger diameter than the screw portion at the lower end of the screw portion, and is rotatable with respect to the top plate 3 but is supported so as not to move in the axial direction. And
The upper end of the screw portion is screwed into the female screw body 25. In particular,
Washers 31 are arranged above and below a screw hole 3a provided on the top plate 3, and an E-shaped retaining ring 32 is press-fitted and engaged with the screw portion adjacent to the washer 31 above the top plate 3 (FIG. 1). reference). As described above, when the screw shaft 24 is supported on the top plate 3 so as to be rotatable only,
Regardless of the change in the vertical position of the pressing body 22, the operation unit 30
Can be positioned on the lower surface of the top plate 3, so that the operation unit 30 does not hinder the taking in and out of the stored items. On the lower end surface of the operation unit 30, a normal one-character or cross-shaped operation groove is formed in a recess.

Next, the procedure for assembling the storage shelf 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 a pressing body 22 having the passive frame 23 integrated therein is assembled therein. Next, the two screw shafts 24 are inserted into the top plate 3 from the lower surface side, and the washer 31 and the retaining ring 32 are assembled to each screw shaft 24. Furthermore, each screw shaft 2
4 is screwed into each female screw body 25, and the pressing body 22 is
Leave inside.

The upper frame 5 is inserted into the upper portion of the lower frame 6 in an external fitting manner and temporarily assembled, and the length from the lower end of the lower frame 6 to the upper end of the pressing body 22 is larger than the height of the stepped wall H or the ceiling. At a slightly lower position, the shelf receiver 15 is hooked into the hook hole 9 of the lower frame 6.
As a result, the upper frame 5 cannot move below the position defined by the shelf receiver 15, and the lower end thereof is received 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. Thereafter, the screw shaft 24 is operated to advance the pressing body 22 above the top plate 3, and the upper surface thereof is pressed against the step wall H to stretch and fix the entire shelf frame. Finally, the shelf holder 15 and the shelf plate 2 are hung between the side frames 1.1 to complete the storage shelf. If necessary, hook the fall prevention bar between the side frames 1 and 1 and attach it.

FIG. 6 shows another embodiment of the tensioning mechanism T, in which the lower end of a hat-shaped bracket 34 is fixed to the upper surface of the top plate 3, and the inner thread of the nut 34 is formed on the inner surface of the upper wall of the bracket 34. 25 were welded. The screw shaft 24 which is fitted into the female screw body 25 from above and screwed therein is provided with an operating groove in the shape of a letter on the lower end surface of the screw portion to form the operating portion 30, and the upper end of the screw portion is fitted to the main frame portion 26 of the passive frame 23. It was caulked and fixed so that it could rotate relatively. Also in this case, similarly to the previous embodiment, the center position P of the screw shaft 24 is biased toward the rear end of the top plate 3.

[0027]

According to the present invention, since the center position P of the screw shaft 24 for pushing up the pressing body 22 is deviated to the rear side of the shelf from the center of the top plate 3 in the front-rear direction, the step wall H close to the ceiling is provided. When the entire shelf is fixed by pressing the pressing body 22 against the pressing member 22, the pressing body 22 can be appropriately pressed and fixed against the stepped wall H. Therefore, not only when the shelf is fixed between the floor and the ceiling but also between the floor and the stepped wall H, the entire shelf can be securely and firmly installed. For example, there is an advantage that the installation location is not restricted, such as installing a shelf avoiding the wall surface with the step wall H, or installing a shelf with a gap corresponding to the overhang amount of the step wall H.

[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 storage shelf.

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

FIG. 4 is a longitudinal sectional front view showing a support structure of a shelf board.

FIG. 5 is a perspective view of a screw shaft.

FIG. 6 is a longitudinal sectional side view showing another embodiment of the tension mechanism.

FIG. 7 is a vertical sectional side view showing a conventional 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 P Center position of screw shaft in the front-rear direction T Tension mechanism H Step wall

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) A47B 97/00

Claims (2)

(57) [Claims] 1. A pair of left and right side frames 1.1, and both side frames 1.1.
A plurality of shelves 2 which are hooked and fixed to each other, and a tension mechanism T provided between upper ends of both side frames 1.1. The tension mechanism T is fixed between upper ends of both side frames 1.1. A rectangular box-shaped pressing body 22 disposed above the top plate 3, a passive frame 23 fixed to an inner surface of the pressing body 22, and a pressing body 22 provided between the passive frame 23 and the top plate 3. The passive frame 23 includes a pair of front and rear base walls 27 and 28. The passive frame 23 includes a screw shaft 24 that operates up and down and a female screw body 25 that meshes with the screw shaft 24 .
A hat-shaped cross-section frame, wherein the tension mechanism
T is an operation of pushing up the pressing body 22 via the passive frame 23.
So that the center position P of the screw shaft 24 in the front-rear direction is
The screw shaft 24 is biased toward the back of the shelf from the center.
The push-up force on the body 22 acts off the shelf back side
The front and rear widths of the front base wall 27 are adjusted to the rear base wall 2.
8 is formed wider than the front-rear width of the pressing body 2.
Strut fixed type storage shelf which equalizes the push-up force applied to 2 . 2. A female screw body 25 is fixed to a passive frame 23.
And a screw shaft 24 having an operation section 30 at the lower end is provided on the lower surface of the top plate 3.
Screwed into the female screw body 25 from the side, and the screw shaft 24 is press-fitted to a screw portion vertically sandwiching the face wall of the top plate 3.
The engagement of the retaining ring 32 and the operating unit 30 causes the axial movement of the retaining ring 32 and the operating unit 30.
2. The storage shelf according to claim 1, wherein movement is restricted .