JP2000087461A - Connecting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate connecting and fixing work and to easily achieve secure clamping and fixing. SOLUTION: Two kinds of right and left opposite internally threaded parts 1 are buried in respective members 21, 22 to be connected together, and a clamping plate 11 is provided in such a way that an externally threaded part 7 having right and left threads for meshing with the threads of the internally threaded parts 1 is located between the threads of the externally threaded part 7. After the threads of the externally threaded parts 7 are threaded into the internally threaded parts 1 driven into the members 21, 22 to be connected together, the clamping plate 11 is rotated to connect and fasten the members 21, 22 together.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixture for connecting wood or other members such as handrails.

[0002]

2. Description of the Related Art For example, as shown in FIG. 5, when connecting a straight handrail 21 and a curved handrail 22 at a portion 23, the following means are used as means for connecting and fixing wood to wood. The methods shown in FIGS. 3 and 4 are used.

[0003] First, in the method shown in FIG. 3, the tip of a (male screw) 23 is screwed into one piece of wood 21, and the other piece of wood 2 is fixed.
2 is inserted into a hole 22a having a diameter slightly larger than the screw 23, and the nut 4 is tightened using a lateral hole 22b passing through the hole 22a.

[0004] This connecting means has a drawback that the nut is shown by using the lateral hole 22b, so that it is troublesome to tighten and cannot be sufficiently tightened. In addition, there is a problem in appearance because the hole is closed with another wood after tightening, and there is also a disadvantage that the use is limited.

FIG. 4 shows another connection means for wood. This is shown in FIG.
Attach the connection fitting 25 to the 1 with the screw 26, and
A connection fitting 27 is attached to 2 with screws 28. Here, the inner surface of the flange 25a of the metal fitting 25 and the flange 27 of the metal fitting 27
It is configured such that the outer surface of a is fitted exactly.
The wood 1 to which the metal fitting 25 is attached and the wood 22 to which the metal fitting 27 is attached are connected in such a manner that the metal fitting 25 and the metal fitting 27 are fitted to each other, and the both metal fittings are fixed by screws 29 from the side surfaces. 21 and 22 are connected and fixed.

[0006]

The conventional connection fixing means shown in FIG. 3 uses a side hole to fix and connect a nut to a screw extending in a direction perpendicular to the direction of the side hole in a direction of tightening the nut. Is troublesome. In particular, when the wood to be connected is small and has a small diameter, the side holes are naturally small and the tightening operation is more difficult to perform. In addition, when the connecting portion of the wood is located in a narrow space, the tightening operation is extremely troublesome.

In the connection fixing means shown in FIG. 4, the fittings to be fitted together must be fixed to the end face of the wood using at least three screws, and after fitting both fittings, the fitting and the fitting are connected to the screws. The connection and fixing work is troublesome.

Further, screwing work for fixing the metal fittings to each other is troublesome.

SUMMARY OF THE INVENTION The present invention provides a connection fitting for wood which is relatively simple in connection and fixing work and can be performed relatively easily even in a narrow portion.

[0010]

According to the present invention, there is provided a wood connecting fixture comprising first and second female threads of male threads having different right-hand threads and left-hand threads, a male thread having a right-hand thread on one side and a left-hand thread on the other side. One male screw part in which each male screw is formed, and a tightening plate for rotating the male screw part located between the right screw and the left screw of the male screw part, A first female screw portion is embedded in a connection portion of one member, and a second female screw portion is embedded in a connection end portion of the other member, and corresponding female screws (right-handed screws, right-handed screws, It is characterized in that members to be connected are connected and fixed by screwing a left screw (left screw) with respect to the left screw and then turning and tightening the tightening plate in a direction in which both female screw portions approach each other.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a connection fixture according to the present invention will be described by taking wood connection as an example.

FIG. 1 is a view showing a connection state of wood using the connection fixing fitting of the present invention, and FIG. 2 is a view showing each part of the connection fixing fitting of the present invention.

As shown in FIG. 1, wood 21 and wood 2
After the first female screw portion 5 and the second female screw portion 6 are respectively screwed and fixed to 2, the screws 9 and 10 of the male screw portion 7 with the tightening plate 11 sandwiched in the center are screwed, respectively. Tighten by turning.

As shown in FIG. 2A, the first female screw portion 1 and the second female screw portion 4 are formed with female screws 2 and 5 on the inner surface of the cylindrical body, respectively, and the screw 3 is formed on the outer surface. And 6
Are formed. The screw 2 of the first female thread 1 is for a right-hand thread, and the screw 5 of the second female thread 4 is for a left-hand thread.

The first and second female screw portions 1 and 4 are screwed and fixed to wood 21 and wood 22, respectively, as shown in FIG.

As shown in FIG. 2 (B), the male screw portion 7 is formed with male screws on the left and right sides of the central hexagonal portion. Conversely, it is for left-hand thread.

As shown in FIG. 2C, a hexagonal hole 12 into which the hexagonal portion 8 of the male screw portion 7 is inserted is formed in the center of the tightening plate 11 as shown in FIG. It has a shape in which the notch 13 is formed.

After the male screw 7 is inserted into the tightening plate 11 so that the tightening plate 11 is located at the center of the male screw 7, the right screw 9 of the male screw 7 is embedded in the wood 2. 1
And the left screw 10 is screwed into the second female screw 4 embedded in the wood 22. In this state, if the central tightening plate is rotated, the first and second female screw portions 1 and 4 move in a direction approaching each other because the left and right screws are reverse screws, and both of them are moved. Are clamped together. Thereby, the woods 21 and 22 are also fastened to each other and connected and fixed.

According to the present invention, since the fastening plate 11 can be moved to the left and right with respect to the central triangular portion 8 of the male screw portion 7 as in this embodiment, the female screw portion 1 embedded in the left and right woods is used. Due to the difference in the pushing state (distance from the end face to the pushed-in internal thread portion) of 2, etc., even if a difference occurs in the distance to the center of the male screw when the left and right woods approach due to the fastening by the fastening plate 11, the fastening is performed. By adjusting the position of the board to the left and right, the two pieces of wood can be tightened until they are completely in contact with the tightening board 11.

The shape of the central hexagonal portion 8 and the shape of the hole 12 of the tightening plate 11 are not limited to a hexagonal shape, and the male screw portion 7 can be rotated by a square, polygon, or other tightening plate 11, and the tightening is performed. Any shape is possible as long as it is possible.

The embedding and fixing of both female screw portions is not limited to the method described above, but may be any method that can be securely fixed to wood. The fastening tool is not limited to the illustrated shape as long as the operation of rotating and tightening the male screw portion is reliably performed.

In the embodiment described above, connection and fixation of wood has been described. However, the present invention can be applied to connection and fixation of other members such as metal and other parts without being limited to wood.

[0023]

According to the connection fixing device of the present invention, both members can be connected and fixed only by rotating the tightening plate, and therefore, connection in a narrow place where work is difficult is easy and reliable. Connection can be fixed.

[Brief description of the drawings]

FIG. 1 is a diagram showing a state in which wood is connected using the connection fixture of the present invention.

FIG. 2 is a diagram showing each part of the connection fixture of the present invention.

FIG. 3 is a diagram showing an example of a conventional wood connection fixing means.

FIG. 4 is a diagram showing another example of a conventional wood connection fixing means.

FIG. 5 is a diagram showing a handrail connection portion as an example of wood connection;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Female screw part 2 Female screw 4 Female screw part 5 Female screw 7 Male screw part 9, 10 Male screw 11 Tightening plate

Claims (1)

[Claims] 1. A first female screw portion, a second female screw portion having a reverse thread to the first female screw, a male screw screwed into the first female screw portion on one side, and a second female screw portion on the other side. A male screw part having a male screw to be screwed into the female screw, and a tightening plate for rotating the male screw part located between the two male screws of the male screw part. Embedding the first female screw portion in the connection end,
The second female screw portion is embedded in the connection end of the other member, the left and right male screws of the male screw portion are screwed into the female screw portions of the respective members, and then the tightening plate is rotated so that the two members approach each other. A connection fixture characterized by being moved and tightened.