JP3355966B2 - Joint fitting - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joining fitting and a joining method.

[0002]

2. Description of the Related Art For joining members that need to be removed frequently, screwing using a joint fitting body and bolts and nuts is often used. For example, handrails may be attached to stairs that are temporarily attached. As shown in FIG. 1, the leg 11 of the handrail 10 is attached to the pillar 21 of the staircase 20 by a joint fitting 30, and the position thereof is freely determined, and is removed when unnecessary or when disassembled. FIG. 2 shows a joint fitting used in such a case. FIG.
In the figure, reference numeral 30 denotes a joining metal fitting, and 31 denotes a joining metal fitting main body. Ribs 34, 3 of joining metal fitting body
Tighten 4 'and attach to the stair post.

[0003]

However, before or after use, the parts of the joint body 31 and the joint bolts and the joint nuts are often managed separately from each other and stored. I had to re-collect when preparing a perfect combination. Or, even when managed and stored in a combined state, they are often separated and dissipated because they are originally independent parts. The present invention has been devised in order to solve such a problem. The components necessary for joining members are connected to each other so that they are not separated from each other. The purpose is to guarantee the same usability as. Further, it is another object of the present invention to add a device that is advantageous in manufacturing the metal joint.

[0004]

According to the present invention, there is provided a joining fitting comprising a joining fitting body 31 ', joining bolts 32', 32 ", and a joining nut 33, in order to achieve the object.
The joining fitting main body 31 'has two vertical ribs 34, 34', and a lateral rib 3 extending outward is provided at the end of one of the vertical ribs 34.
6, a hole 37 is provided over the vertical rib 34 and the horizontal rib 36, and the size of the hole 37 is smaller than the head 38 of the joining bolts 32 ', 32 ". The head 38 of the bolt 32 ', 32 "is in contact with the vertical rib 34, and the head 3 of the joining bolt 32', 32" is used when not in use.
8 are connected to the lateral ribs 36 so that the joining bolts 32 ', 3
2 "is large enough to move in the hole 37, and the other vertical rib 34 'is provided with a cut 35',
The joining bolts 32 ', 32 "
7 and a notch 35 'of the other vertical rib 34' to engage the members. The joining bolts 32 'and 32 "into which the joining nuts 33 are fitted have screw tips for joining. The nut is crushed so as not to come off.

[0005]

3 to 5 show several embodiments of the present invention. The same reference numerals are given to the parts which are the same as the conventional ones. In FIG.
An extension, ie, a horizontal rib, is provided on one of the vertical ribs of the joint fitting body 31 ′, and the horizontal rib is bent outward at a substantially right angle to the vertical rib. Vertical rib 34 and horizontal rib 36
And a hole 37 is provided.

FIG. 4 shows the details of the joining metal body and the relationship between the joining metal body and the joining bolt / nut together with some different embodiments. FIG. 4A is a cross-sectional view of the joint fitting main body 31 ′. x and y are the lengths of the portions required for the joining bolts 32 'to be positioned when the joining nuts 33 are tightened or loosened, and are slightly larger than the diameters of the joining bolts 32'.

FIG. 4 (b) shows a state before use of the present fitting. The joining bolt 32 ′ is inserted into the hole 37. Numeral 38 denotes a head of the joining bolt 32 ', and a joining nut 33 is combined with the joining bolt 32'. After the joining nut 33 is attached to the joining bolt 32 ', 3
As shown at 9, the tip of the screw portion of the joining bolt 32 'is crushed. By crushing the screw part, the joining bolt 32 ′
And the joining nut 33 are not separated. Crushing part 39
As shown in the figure, the entire surface may be crushed, a part of the circumference of the screw portion may be crushed, or the thread may be crushed by stamping a concave portion with a punch or the like in the vertical direction.

The head 38 may be a pin provided at a right angle to the joining bolt 32 'as shown in FIG. 5 or a normal bolt head. In the case of a pin, its diameter is arbitrary and its length needs to be larger than the diameter of the joining bolt. In other words, it is larger than the minor axis, that is, the width of the hole 37 so that the hole 37 does not fall out of the hole 37. Although the cross-sectional shape of the pin does not matter, it is desirable that the surface in contact with the rib be a flat surface. In short, by providing the head 38, the vertical ribs 34, 3
4 ′ can be tightened, and the joining bolt 32 ′ does not fall out of the joining fitting main body 31 even when not in use. The head is a connecting bolt 32 '
May be formed integrally with each other, or the two bodies may be combined by welding or the like. It is of course possible to use a washer for this part. The joining nut 33 may be an ordinary hexagonal one or a wing nut as shown in FIGS. 4 (b), (c) and FIG.

FIG. 4C shows a state in which the metal fitting is used. The member 21 to be attached, such as a pillar of a stair, attached between the vertical ribs 34, 34 'is inserted, and the joining bolt 3
The members are joined by attaching and fastening the joining nut 33 to 2 ′. The joint bolt 32 ′ has a hole so that the head 38 of the joint bolt 32 ′ is in contact with the vertical rib 34 when tightened, and the head 38 of the joint bolt 32 ′ is in contact with the horizontal rib 36 when not joined. 37
((B) in FIG. 4)
(C)). The joining bolt 32 ′ is rotated through the hole 37, and is fitted into the cut 35 ′ to be tightened. Is the angle at which the joining bolt 32 'can rotate, and must be able to rotate until it does not hinder the insertion and removal of the attached member.
Preferably, angle θ is 90 ° or greater.

FIG. 4D shows an example of the shape of the hole 37.
The line ab and the line cd are preferably parallel or slightly open in the direction of bd. The hole 37 may be formed by cutting, but it may be formed by punching, so when forming a hole by punching, it is better to provide a relief. In the case of forming by punching, punching can be performed before the extension of the vertical rib 34 is bent to form the horizontal rib 36, but punching can be performed after bending the extension to form the horizontal rib 36. The width of the hole 37 (length in a direction perpendicular to the drawing) is sufficient if the joining bolt 32 'can move and the joining bolt 32' and the joining nut 33 do not fall off. Yes, there are no special restrictions.

The space between the vertical ribs 34, 34 'can be freely changed according to the shape of the members to be joined. FIG.
In (a), the shape of the joined members is square (square tubular)
FIG. 4B illustrates a case where the shape of the members to be joined is circular (cylindrical).
(C) illustrates a case where the shape of the members to be joined is a square C-shape.

Also, a U-shaped joining bolt 32 "as shown in Fig. 6 may be used. In the case of a U-shaped joining bolt, a head such as a pin may be provided or may not be provided. In this case, the number of the holes 37 and the cuts 35 'is two in accordance with the U-shape.In this embodiment, the case where the stairs and the handrail are joined has been described as an example, but the present invention is not limited to this. The present invention is not limited to this, and can be widely used when members are joined by bolts and nuts.

Although the description has been given of the case where the joining metal body and one of the members to be joined are integrated, the joining metal body is also used when both of the members to be joined are separated from the joining metal body. The invention can be further applied by providing one that is connected in a back-to-back fashion with two mutually rotatable forms.

[0014]

As described above, since the joining bolt and the joining nut are not separated from each other, troubles such as dissipating or losing one of the components and making it impossible to combine them can be eliminated. The point of fitting the joining bolt into the cut when joining is the same as the conventional one. Since the necessary parts are not separated from each other, the management and storage of the joints are facilitated.

[Brief description of the drawings]

FIG. 1 is a perspective view of stairs and handrails using a joining metal fitting.

FIG. 2 shows an example of a conventional metal fitting.

FIG. 3 is a perspective view showing one embodiment of the present invention.

FIG. 4 is a cross-sectional view of the joint fitting of the present invention.

FIG. 5 is a perspective view showing one embodiment of a joining bolt / nut.

FIG. 6 is a perspective view showing another embodiment of the joining bolt / nut.

[Explanation of symbols]

10: Handrail 11: Leg (of handrail) 20: Stairs 21: Part to be attached, for example, pillar of stairs 30, 31 ': Joining fitting 31, 31': Joining fitting main body 32, 32 ', 32 ": Joining bolt 33 : Joining nuts 34, 34 ': Vertical ribs 35, 3 of joining fitting body
5 ': Notch 36: Side rib 37: Hole 38: Head 3
9: crushed portion θ: angle at which the joining bolt can rotate x, y: length of a portion required for positioning of the joining bolt

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E04F 11/18 F16B 2/12 F16B 7/04

Claims (4)

(57) [Claims] 1. A joining fitting body (31 ') and a joining bolt
(32 '), (32 ") and joining nut (33)
And the joining metal body (31 ') has two vertical ribs (3
4), (34 '), the tip of one longitudinal rib (34)
Has a lateral rib (36) extending outward, and
A hole (37) spans (34) and the horizontal rib (36).
The size of the hole (37) is
(32 '), smaller than the head (38) of (32 "),
At the time of attachment, the head of the connecting bolt (32 '), (32 ")
(38) is in contact with the vertical rib (34) and is used for joining when not in use
Bolts (32 '), (32 ") have heads (38) with horizontal ribs
The connecting bolts (32 '), (3
2 ”) is large enough to move inside the hole (37).
A cut (35 ') is made in the other vertical rib (34').
And the connecting bolts (32 ') and (32 ")
The hole (37) of one vertical rib (34) and the other vertical rib (3)
4 ') is engaged with the notch (35') to join the members
The joining nut (33) was fitted.
The ends of the screws of the connecting bolts (32 ') and (32 ")
Joint fittings crushed so that the joining nut does not come off. 2. A joint to which a joint fitting body (31 ') is joined.
2. The device according to claim 1, wherein the two members are integrated with one another.
Mounting bracket. 3. The cross-sectional shape of the hole (37) is widened.
The joint fitting according to claim 1 or 2, wherein 4. A bolt having a U-shape (32 ").
The joint fitting according to claim 1, wherein: