JPH0228260Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a joint member used for connecting parts of panel materials constituting a sectional display shelf or the like.

(Prior Art) For example, US Pat. No. 4,236,363 discloses an assembly set for connecting panel materials of this type. As shown in Fig. 8, this assembly set consists of four connecting rails c attached to the edge b of panel material a, and a joint member d that connects and fixes these to each other. The hook-shaped portions e... of c... are concentrically engaged, and at this time, a substantially cylindrical insertion hole is formed by the hook-shaped portions e..., into which the joint member d is inserted.
is inserted, and the connecting rails c... are connected and fixed to each other.

(Problem to be solved by the invention) However, in such a fixed structure, since the hook-shaped parts e... are simply connected by the joint member d, slippage occurs on the contact surfaces of each member. There was a problem that the fixing was not done sufficiently.

(Means for Solving the Problems) The joint member of the present invention concentrically engages the hook-shaped portions of a plurality of connecting rails, and inserts the hook-shaped portions into a substantially cylindrical insertion hole formed by the hook-shaped portions. The connecting rails are connected and fixed to each other, and the main body is formed into a rod shape having an outer shape corresponding to the insertion hole, and a locking flange having a diameter larger than the insertion hole is provided at the base end of the main body. A plurality of locking ribs are provided on the outer peripheral surface of the main body.

(Function) A plurality of hook-shaped parts extending in a curved manner from one side of the base of the connecting rail and having a curved tip and a locking groove provided on the inner surface are engaged in a spiral shape, and the center part By inserting and rotating a joint member having a plurality of locking ribs on its outer circumferential surface into a substantially cylindrical insertion hole formed in the cylindrical insertion hole, the joint member presses the hook-shaped portion outward, and The locking rib of the joint member is locked in the locking groove of the hook-shaped portion, and the locking state is established to firmly connect and fix the connecting rail.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

The joint member according to the present invention is shown in Figures 1 and 2.
As shown in the figure. The joint member 1 is assembled into an assembly set 3 with a plurality of connecting rails 2 having the same shape. The assembly set 3 is used, for example, as a connecting part (circular part) of an assembly type display shelf 4 as shown in FIG. The display shelf 4 is a rotary type with a multi-stage structure, and each shelf part 4a is made up of a disk-shaped shelf board 5 and four partition plates 6 erected at an angle of 90 degrees to each other. These partition plates 6 are connected by the assembly set 3.

The connecting rail 2 is connected to the connecting side edge 6 of the partition plate 6.
A, it is extruded and formed into a cross-sectional shape as shown in FIG. 3, and its length is set to be approximately the same as the side edge portion 6a. still,
The connecting rail 2 is preferably made of aluminum or an aluminum alloy. The connecting rail 2 has a base part 7 and a hook-shaped part 8
It consists of The bottom surface 7a of the base 7 is a flat surface, and leg pieces 9, 9 are provided protruding from the bottom surface 7a, and the leg pieces 9, 9 are fitted into fitting grooves 10, 10 formed on the side edge 6a of the partition plate 6. The connecting rail 2 is attached by fitting. Further, both side surfaces of the base 7 are formed into joint surfaces 7b, 7b that are inclined toward the axis P shown in FIG. 3 when the four connecting rails 2 are engaged with each other.

The hook-shaped portion 8 extends in a curved manner from one side of the base portion 7,
The tip portion 11 is curved and formed along a circumference centered on the axis P. The hook-shaped portion 8 has an outer surface 8a that is a smoothly continuous curved surface, while an inner surface 8b that is formed at the base 11a of the tip 11.
is a stepped curved surface. In the state in which the four hook-shaped portions 8 are engaged as shown in FIG. 3, the outer surface 8a of each hook-shaped portion 8 runs along the first inner surface 12 of each adjacent hook-shaped portion 8, and
The tips 13 respectively engage the base portions 11a.
Further, the four second inner surfaces 14 form a continuous arc centered on the axis P, and a substantially cylindrical insertion hole 15 is formed by these second inner surfaces 14 .
Each of the second inner surfaces 14 has an insertion groove 17 that allows insertion of a locking rib 16 of the joint member 1, which will be described later.
and a locking groove 18 with which the locking rib 16 engages are provided, and the insertion groove 17 is formed so that the bottom surface becomes gradually shallower as it goes toward the distal end.

The joint member 1 has a main body 19 having a hook-shaped portion 8...
It is a rod-shaped body having an outer diameter corresponding to the inner diameter of the insertion hole 15 formed by the above, and a tip end 19a is formed in a tapered shape. In addition to being cylindrical, the main body 19 may have a tapered shape (conical shape) that tapers gently over the entire length, for example. Further, the length of the main body 19 may be long enough to be inserted over the entire length of the connecting rail 2..., or short enough to be inserted only into the end of the connecting rail 2...; In this case, the joint members 1 are inserted into both ends of the connecting rails 2...
It is best to use them in pairs.

On the outer peripheral surface 19b of the main body 19, four locking ribs 16 described above are provided at equal intervals in the circumferential direction, that is, at an angle of 90 degrees, and the locking ribs 16 are formed to extend in the longitudinal direction of the main body 19. ing. The cross-sectional shape of the locking rib 16 is semicircular as shown in FIG.
The cross-sectional shape is set to be smaller than the cross-sectional shape of the insertion groove 17 formed in the hook-shaped portion 8 and larger than the cross-sectional shape of the locking groove 18. Note that the cross-sectional shape of the locking rib 16 may be triangular, square, or the like in addition to the semicircular shape.

A locking flange 20 is provided at the base 19c of the main body 19.
is formed. The locking flange 20 has a substantially circular shape, and its outer diameter is the same as the locking rib 16...
The diameter of the insertion hole 15 is set to be approximately equal to the circumscribed circle of , and has a larger diameter than the insertion hole 15 formed by the hook-shaped portion 8 . A screw hole 21 is provided in the center of the locking flange 20.
is provided along the axis of the main body 19, and a cap bolt 22 (see FIG. 5d), which will be described later, is screwed onto this. Further, the screw hole 21 is also used as a wrench insertion hole into which a wrench 23 for rotating the joint member 1 is inserted (see FIG. 5c).

Next, the procedure for connecting the connecting rails 2 by the joint member 1 will be explained (see FIG. 5).

As shown in FIG. 5a, the side edge 6 of the partition plate 6
The hook-shaped portions 8 are engaged with each other while the four connecting rails 2 . . . each attached to the shaft a are positioned at an angle of 90° with respect to the axis P. Then, the hook-shaped portion 8...
A substantially cylindrical insertion hole 15 centered on the axis P is formed inside the holder.

As shown in FIG. 5b, insert the joint member 1 into the insertion hole 15 so that the locking ribs 16 correspond to the insertion grooves 17 of the hook-shaped portions 8 (see FIG. 4). Then, push it in until the locking flange 20 comes into contact with the end surface of the hook-shaped portion 8.

As shown in FIG. 5c, the wrench 23 is inserted into the screw hole 21 of the joint member 1, and the joint member 1 is rotated toward the tip of the hook-shaped portion (in the direction of arrow A). Then, in FIG. 4, as the joint member 1 rotates, each locking rib 16
While pressing the distal end portion 11 of the hook-shaped portion 8 in the radial direction and elastically deforming it, it comes off from the insertion groove 17 and engages with the locking groove 18, and becomes locked. As a result, each connecting rail 2... is pulled in the direction of the axis P, and the joint surfaces 7b, 7b... are firmly joined and fixed to each other.

Finally, as shown in FIG. 5d, the cap bolt 22 is screwed into the screw hole 21 of the joint member 1 to hide the joint member 1.

As described above, the display shelf 4 is assembled by combining the connected partition plates 6, shelf boards 5, etc. (see FIG. 6).

The present invention can be applied not only to the illustrated display shelf 4 but also to assembly type display shelves of various shapes.

Further, the shape of the joint member 1 is not limited to that shown in the drawings, and can be modified as long as it has the same function. For example, the main body 19 may be a rod-shaped body with a circular cross section, or
It may also have a rectangular cross section as shown in FIGS. 7a and 7b. That is, in the case shown in FIG. 7a, the outer circumferential surface 19b between the locking ribs 16, 16 is formed into a flat surface, and in the case shown in FIG.
6 and 16 are applied to each corner of the rectangular cross section.

In addition, the joint member 1 and the plurality of connecting rails 2
The assembly set 3 composed of the above can also be used to connect two or three partition plates by using a connecting rail (not shown) without legs on the bottom surface 7a of the base 7.

(Effects of the invention) As described in detail above, according to the invention, the locking rib provided on the main body presses the hook-shaped part in the radial outward direction and pulls it in the circumferential direction, so that the connecting rail is strengthened. Connected and fixed. Furthermore, the locking rib bites into the inner surface of the hook-shaped portion, resulting in a locked state, and the fixation will not loosen.

[Brief explanation of the drawing]

1 to 7 show one embodiment of the present invention, FIG. 1 is a perspective view showing a joint member, and FIG. 2 is a perspective view showing a joint member.
The figure is a sectional view taken along the - line in Fig. 1, Fig. 3 is a sectional view showing a state in which the connecting rails are connected and fixed by a joint member, and Fig. 4 is an enlarged view for explaining the operation at the time of connection, Figure 5 a, b, c,
d is a diagram for explaining the connection procedure, FIG. 6 is a perspective view showing an example of a display shelf to which a joint member is applied, and FIG. 7 is a second diagram showing a modification of the joint member.
FIG. 8 is a cross-sectional view showing a state in which the connecting rails are connected and fixed by a conventional joint member. 1...Joint member, 2...Connection rail, 8
... hook-shaped part, 11 ... tip part, 15 ... insertion hole, 16 ... locking rib, 18 ... locking groove, 19 ...
...Main body, 20...Locking flange.

Claims (1)

[Scope of utility model registration request] Consisting of a plurality of connecting rails 2 and joint members 1, each connecting rail 2 is formed with a hook-shaped portion 8 extending in a curved shape from one side of its base 7 and having a bent tip portion 11. Locking groove 1 on the inner surface of 8
8 is provided, and the joint member 1 is connected to the main body 1.
A locking flange 20 is formed at the base end of the main body 19, and a plurality of locking ribs 16 are provided on the outer peripheral surface of the main body 19. The shaped portions 8 are engaged in a spiral manner, and the joint member 1 is inserted and rotated into the substantially cylindrical insertion hole 15 formed at the center of the hooked portion 8, so that the outer circumferential surface of the joint member 1 is engaged with the joint member 1. An assembly set in which a locking rib 16 is locked in a locking groove 18 on the inner peripheral surface of the hook-shaped portion 8.