JPH0630740Y2 - Shelf pillars made of synthetic resin-coated metal tubes - Google Patents

Description

TECHNICAL FIELD The present invention relates to a column member for a shelf used for constructing an industrial and household shelf for storing and storing relatively lightweight articles.

2. Description of the Related Art Conventionally, well-known metal pipes, synthetic resin-coated metal pipes, and the like have been widely and commonly used as pillar materials for constructing shelves for lightweight articles. In addition, for example, Japanese Examined Patent Publication (Kokoku) No. 50-25372 describes a pillar material in which concave grooves annularly formed in the circumferential direction of the outer peripheral surface of the metal tube are formed at regular intervals in the tube axial direction.

Problems to be solved by the present invention When a metal pipe or a synthetic resin-coated metal pipe that has been generally used in the past is used as a column member for a shelf, the joint for connecting the horizontal rails is fastened more firmly or bonded. Otherwise, the joint position of the joint may slide (slide down) depending on the size of the load.

On the other hand, the shelf pillar material described in the above Japanese Patent Publication No. 50-25372 can easily construct a shelf having a large load bearing capacity by attaching a cross rail with a joint configured to bite in the position of the groove. However, an apparatus for forming a concave groove in a metal tube is generally large in size because it is drawn or cut at room temperature. Moreover, since plating is required as a rust preventive after forming the concave groove, there is a disadvantage that the secondary processing becomes troublesome and expensive in any case, and these are problems to be solved. There is.

Means for Solving the Problems As means for solving the problems of the above-mentioned conventional technology, a pillar material for a shelf using a synthetic resin-coated metal tube according to the present invention is, as shown in the embodiments in the drawings, a pillar material 1a for a shelf. A pair of half-divided taper rings, each of which is formed with circumferential irregularities at a constant pitch in the axial direction on the outer peripheral surface of the outer peripheral surface, is formed in a taper shape that narrows the outer peripheral surface upward, and has an engaging portion 16 that engages with the irregularities on the inner surface 15 and 15 are the pillar materials 1a
Of the column member 1a by fitting the socket portion 13a of the joint 13 thereof to the outer peripheral surfaces of the pair of half-divided tapered rings 15 from above so as to form a shelf by engaging with the desired position of the column member 1a. In the column member for shelves connected to the above, the column member for shelves has a longitudinal length of an outer peripheral surface of a synthetic resin-coated metal pipe 1 formed by coating a synthetic resin 3 on the outer periphery of a thin metal pipe 2 in a thin and uniform layer shape and adhering the synthetic resin 3 to the thin resin pipe. At least one row of the rack tooth-shaped locking portions 4 each having a constant width in the direction are formed on the resin coating layer 3 by the molding device 8 of the manufacturing line immediately after the synthetic resin 3 is coated and bonded and still in a soft state. It is characterized in that it is formed continuously in a strip shape.

According to the present invention, dots or linear scale marks 5 are displayed along the rack-tooth-shaped locking portion 4 of the synthetic resin-coated metal pipe 1 at regular intervals in the longitudinal direction of the pipe, and Rack tooth-shaped locking portion 4 in the synthetic resin-coated metal tube 1
Is characterized in that it is formed in a rack tooth shape concentric with the pipe at two positions that are symmetrical by 180 ° on the circumference in the cross section of the synthetic resin-coated metal pipe 1.

Action The rack tooth-shaped locking portion 16 on the inner surface of the half-divided taper ring 15 is engaged with the locking portion 4 of the column member 1a or 1b for shelves so that the pair of half-divided taper rings 15 and 15 are aligned with each other. When the socket 13a of the joint 13 is fitted downward from above, the locking portion 16 of the half taper ring 15 firmly engages with the locking portion 4 of the pillar 1a or 1b due to the wedge effect, and is secured to the cross rail 11 or 11 '. As long as the magnitude of the applied load is within the allowable range in terms of strength, it supports and there is no risk of sliding. By pulling the socket 13a of the joint 13 upward, the joint can be easily disassembled and separated.

By counting the number of the scale marks 5 on the column members 1a or 1b for shelves, the mounting position of the half taper ring 15, and thus the mounting position of the cross rail 11 or 11 'can be determined dimensionally.

The rack tooth-shaped locking portion 4 and the dot or linear scale mark 5 can be easily and easily continuously formed by the molding device 8 included in the manufacturing line in the manufacturing process of the synthetic resin-coated metal tube 1.

Since the locking portion 4 is continuously formed in the longitudinal direction of the synthetic resin-coated metal pipe 1, the mounting position of the crosspiece 11 using the half-divided taper ring 15 can be adjusted in a wide range and finely.

Embodiment Next, an embodiment of the present invention shown in the drawings will be described.

1A and 1B show two roughly divided embodiments of the present invention. First, the shelf column 1a shown in FIG. 1A is manufactured to have an outer diameter of φ28 or φ32 by adhesively coating a synthetic resin 3 such as AAS on the outer periphery of a thin metal tube 2 in a thin uniform layer of about 1 mm. Filled portions 3a, 3a in which a portion of the resin coating layer 3 is locally thickened to a thickness of about 2 to 3 mm at two positions on the outer peripheral surface of the synthetic resin-coated metal tube 1 that are 180 ° symmetric. Is formed in a strip shape having a constant width in the longitudinal direction of the pipe, and rack-shaped locking portions 4 are continuously formed at a constant pitch on the fill portion 3a. In the shelf pillar 1b shown in FIG. 1B, the resin coating layer 3 is formed to have a thickness of about 3 mm as a whole, and the rack tooth-shaped locking portion 4 is provided in the longitudinal direction of the resin coating layer 3. It is characterized in that it is formed continuously in the form of a recessed strip. In both embodiments, dot-shaped (or linear-shaped) scale marks 5 are also engraved along the locking portion 4 in the longitudinal direction of the pipe at regular intervals such as 3 cm, 5 cm, or 10 cm. ing.

2 to 4 show a means for manufacturing the above-mentioned shelf pillar material 1a or 1b. Among them, FIG. 2 shows that the hoop material is made tubular by a forming roll group not shown on the left side of the drawing. The molded and welded thin-walled metal tube 2 is advanced to the right in the figure by the feed roll 6 and passed through the extrusion molding device 7, whereby synthetic resin such as AAS resin is adhered to the outer peripheral surface of the thin-walled metal tube in a thin and uniform layer. It is covered. Then, immediately after the resin coating layer 3 is coated, the rack gear-shaped engaging portion 4 and the scale mark 5 are engraved by the molding device 8 at a time when the resin coating layer 3 is still in a soft state, and then the resin coating layer 3 is passed through the cooling water layer 9. 2 shows a production line that achieves complete curing of

Further, FIGS. 3 and 4 show the details of the molding device 8, and include a pair of arc-shaped molding teeth 80a which are substantially concentric with the outer diameter of the cross section of the synthetic resin-coated metal tube 1. Forming wheel 8
0,80 is the center. The molding wheel 80 has an integral structure with a spur gear 82 meshed with each other for transmission of rotation, and is rotatably attached to a shaft 83 via a ball bearing 84, and the shaft 83 is supported by a support block 88. There is. The two support blocks 88, 88 supporting the pair of spur gears 82, 82 include a drive shaft 8 rotated by a handle 85.
The threaded portions 86a and 86b formed in the directions opposite to each other are screwed in and supported in the frame-shaped holder 87 so as to move toward or away from each other.

Therefore, in this molding device 8, by turning the handle 85, with respect to the outer diameter of the synthetic resin-coated metal pipe 1 or the outside dimension of the left and right fill portions 3a, 3a, the left and right fill portions 3a, 3a,
It is possible to set or adjust the effective spacing between the molding teeth 80a, 80a of the pair of molding wheels 80, 80 so that the molding teeth 3a or the resin coating layer 3 can be directly bitten by an appropriate depth. The pair of molding wheels 80, 80 rotate at the same peripheral speed as the synthetic resin-coated metal pipe 1 moves forward while being engaged with the fill portion 3a or the resin coating layer 3, and the locking portion 4 It is formed.
At the same time, the graduation marks 5 are also engraved by the marking projections 81 protruding at positions where the circumference of the molding tooth 80a is equally divided. The pair of molding wheels 80, 80
Can also be implemented by a configuration in which a driving motor is used to rotationally drive the synthetic resin-coated metal tube 1 at a peripheral speed synchronized with the traveling speed.

Next, FIG. 5 and FIG. 6 show the above-mentioned fence post 1a (or 1).
b, the same applies to the following) tray tray 1 as a typical use example
0 is shown. The above-mentioned fence pillar material 1a is used for the pillars at the four corners, and the horizontal crosspieces 11 ', 11 are joints 12, 1
3, 14 are joined to the fence pillar 1a. Above all, the crosspieces 11 'and 11 joined by the joints 13 and 14 at the intermediate positions of the columns are, as shown in detail in FIG. 6, a pair of half-divided tapers whose outer peripheral surfaces are tapered upward. Locking part 4 of fence pillar 1a using rings 15 and 15
It is joined in a configuration that effectively utilizes the. That is, a rack tooth-shaped locking portion 16 having the same specifications as the locking portion 4 is formed on the inner surface of the half-divided taper ring 15, and the rack tooth-shaped locking portion 16 is engaged with the locking portion 4 of the fence pillar 1a. As a result, the pair of half-divided taper rings 15, 15 are fitted in a ring shape. Vertical socket 13a of the joint 13 (or 14) from above
By fitting (the inner diameter surface is formed in the same taper as the taper ring), the wedge effect of the taper causes the pair of half-divided taper rings 15 and 15 to firmly engage with the locking portion 4 and to the crosspiece 11. As long as the applied load is within the allowable limit, there is no risk of sliding (sliding down). Of course, by pulling the socket 13a upward, the joint can be easily disassembled and separated at any time.

Advantageous Effects of the Present Invention As described in detail above together with the embodiments, the fence pillar members 1a, 1b made of the synthetic resin-coated metal pipe according to the present invention are provided.
Can be offered to the market at a very low cost, there is no concern about rusting, and the beautiful appearance of the synthetic resin on the surface contributes to the construction of lightweight shelves and the like with excellent design aesthetics.

Then, by using the engaging portion 4, the joining of the crosspieces 11 and 11 'can be easily and surely performed in a state of never sliding, fine adjustment of the joining position and redoing are possible, and the scale mark 5 is used. As a result, dimensional indexing is easy, so that assembling of shelves and the like can be easily performed with high quality and efficiency.

[Brief description of drawings]

1A and 1B are perspective views showing a different embodiment of the fence pillar material according to the present invention, FIG. 2 is an explanatory view showing a production line of the fence pillar material, FIGS. 3 and 4 Is a plan view and a sectional view in the front direction showing the forming device of the locking portion, FIG. 5 is a perspective view of a tray trolley using a fence pillar material, and FIG. 6 is joining a rail material to the fence pillar material. It is the perspective view which showed the point. DESCRIPTION OF SYMBOLS 1 ... Synthetic resin coating metal pipe, 2 ... Metal pipe 3 ... Resin coating layer, 4 ... Locking part 5 ... Scale mark, 3a ... Filling part

Claims (3)

[Scope of utility model registration request] Claims: 1. A member for forming an unevenness in the circumferential direction at a constant pitch in the axial direction on the outer peripheral surface of a column member (1a) of a shelf, and forming a taper shape that narrows the outer peripheral surface upward so that the inner surface is engaged with the unevenness. A pair of half members (11) for forming a shelf by engaging a pair of half-divided taper rings (15), (15) having a stop (16) with a desired position of the column member (1a) to form a ring shape. In the column member for a shelf, which is connected to the column member (1a) by fitting the socket portion (13a) of the joint (13) to the outer peripheral surface of the pair of half-divided taper rings (15) from above, the shelf The pillar material (1a) is made of synthetic resin on the outer circumference of the thin metal tube (2).
The synthetic resin-coated metal pipe (1) formed by coating and adhering (3) in a thin and uniform layer is a rack-tooth-shaped locking portion (4) in the form of a strip with a constant width in the longitudinal direction of the outer peripheral surface of the synthetic resin-coated metal pipe (1). Immediately after the resin (3) is coated and adhered, the resin coating layer (3) is continuously formed into at least one row of strips by the molding device (8) of the production line in a still soft state. A pillar material for shelves that features a synthetic resin-coated metal tube. 2. A synthetic resin-coated metal pipe according to claim 1.
Synthesized, characterized in that points or linear scale marks (5) are displayed at regular intervals in the longitudinal direction of the pipe along the rack tooth-shaped locking part (4) of (1). Shelf pillars made of resin-coated metal tubes. 3. The rack tooth-shaped locking portion (4) of the synthetic resin-coated metal pipe (1) according to claim 1 or 2 is on the circumference of a cross section of the synthetic resin-coated metal pipe (1). A column member for a shelf made of a synthetic resin-coated metal tube, characterized in that it is formed into rack tooth shapes concentric with the tube at two positions symmetrical with respect to 180 °.