JPH07259826A - Connecting structure for shaft connecting member - Google Patents

Abstract

PURPOSE:To provide a connecting structure simplifying the structure and facilitating assembly, relating to the connecting structure for a shaft connecting member of band fastening fitting, opening/closing hinge, etc., for instance, for fastening an electric pole band or the like fixed. CONSTITUTION:In a connecting structure for a shaft connecting member inserting a connecting shaft 4 to shaft inserting holes 11, 21, 31 formed in each member 1 to 3, in a plurality of the members 1 to 3 which must be connected to each other, so as to relatively turnably connect the members, diameters in at least both end parts 4a, 4a of the connecting shaft 4 are formed equal to or a little smaller than diameters of the shaft inserting holes 11, 21, 31, and also fitting parts to at least the shaft inserting holes 11, 21, 31 except in both the end parts 4a, 4a are formed to a diameter smaller than of both the end parts 4a, 4a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention enables a plurality of members to be connected to each other, such as a band tightening tool for tightening and fixing a telephone pole band and an opening / closing hinge, to be relatively rotatable by a connecting shaft. The present invention relates to a connecting structure for connecting shaft coupling members.

[0002]

2. Description of the Related Art Conventionally, so-called utility pole bands have been used for fixing cables, conduits, protective plates, etc. to the peripheral surface of utility poles, or for mounting support brackets for advertisements, street lights, etc. A band tightening tool is used to fix the same. Various band fasteners have been proposed in which a plurality of members (metal fittings) having a substantially U-shaped cross section are connected to each other by a connecting shaft so as to be rotatable relative to each other.

For example, the applicant of the present invention has previously proposed
In the band tightening tool of No. 67586, a main body metal fitting having a band through hole for inserting and fixing one end of the band, and the main body metal fitting are openably and closably connected by a connecting shaft, and the other end of the band is bent. A locking metal fitting for locking and a holding metal fitting for sandwiching and fixing the locking metal fitting with the main body metal fitting in a state where the band is locked to the locking metal fitting are provided. It has a configuration in which the opposing pieces are formed in a U shape and are overlapped with each other, and the connecting shafts are inserted into the shaft insertion holes formed in the opposing pieces so as to be relatively rotatable with respect to each other.

Also, as disclosed in, for example, Japanese Utility Model Publication No. 50-40757, there is also one in which a band tightening tool is composed of a body fitting and a holding fitting, and both fittings are rotatably connected by a shaft.
As the connecting shaft used for the band tightening tool as described above, for example, a rivet, a bolt, a nut or the like is used.

On the other hand, for example, an opening / closing hinge used for a door or the like generally has a structure in which a pair of blades are connected by a connecting shaft so as to be openable and closable, and a rivet, a bolt, a nut and the like have been generally used for this type of connecting shaft. There is.

[0006]

However, when the rivet is used as described above, it is necessary to crimp the end portion of the rivet. The shank of the rivet may buckle. In addition, those using bolts and nuts have troubles such as manufacturing and assembling are complicated and the manufacturing cost is increased.

The present invention has been proposed in view of the above problems, and provides a connecting structure in which the above-mentioned shaft coupling members can be rotatably connected with a simple structure and can be easily manufactured and assembled. The purpose is to provide.

[0008]

In order to achieve the above object, a connecting structure for a shaft coupling member according to the present invention has the following structure. That is, in the connecting structure of the shaft connecting member, a plurality of members to be connected to each other are connected so as to be relatively rotatable by inserting the connecting shaft into the shaft insertion holes formed in the respective members. The diameter of at least both end portions is formed to be the same as or slightly smaller than that of the shaft insertion hole, and at least the fitting portion other than the both end portions with the shaft insertion hole is formed to have a smaller diameter than the both end portions. To do.

[0009]

In connecting the shaft connecting member with the connecting shaft configured as described above, the connecting shaft is inserted into the shaft inserting hole of the shaft connecting member, and the connecting portion of the connecting shaft is fitted into the shaft inserting hole. Need only be positioned in the shaft insertion hole, and at least both ends of the connecting shaft inserted in the shaft insertion hole have a larger diameter than the fitting portion with the shaft insertion hole, so carelessly It is possible to provide a connecting structure for a shaft coupling member that has a simple structure and is easy to assemble with almost no possibility of falling off.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A connecting structure for a shaft coupling member according to the present invention will be specifically described below with reference to embodiments shown in the drawings. [Embodiment 1] FIGS. 1 to 5 show an embodiment in which the present invention is applied to a band fastening tool. FIG. 1 is a side view of the band fastening tool in a partially opened state, and FIG. 2 is a bottom view thereof. 3 is a plan view in a closed state, FIG. 4 is a side view in a closed state, and FIG. 5 is a sectional view taken along the line AA in FIG.

In the figure, 1 is a main body metal fitting, 2 is a locking metal fitting, 3 is a holding metal fitting, and these metal fittings 1 to 3 are each formed of a stainless steel plate or the like in a substantially U-shaped cross section. The body metal fitting 1 and the locking metal fitting 2 are arranged such that the opening sides of the U-shaped cross section face each other, and the holding metal fitting 3 is arranged in the same direction as the locking metal fitting 2, and these metal fittings 1 to 3 are arranged in the longitudinal direction. One in which the connecting shaft 4 is inserted into the shaft insertion holes 11, 21, 31 formed in the opposite side plates 1a, 2a, 3a at the one end side so as to be rotatable (openable and closable) to each other, and The shaft insertion holes 11, 21, 31 are formed to have the same diameter in this embodiment.

The connecting shaft 4 has at least both ends 4a, 4a.
Is formed to have a diameter substantially the same as or slightly smaller than that of the shaft insertion holes 11, 21, and 31.
The fitting portion with is formed so as to have a diameter smaller than that of the both end portions 4a, 4a.
4a is formed to have a diameter substantially the same as or slightly smaller than the diameter of the shaft insertion holes 11, 21 and 31 described above.
The entire intermediate portion 4b between the both end portions 4a, 4a including the fitting portion with 31 is formed to have a smaller diameter than the both end portions 4a, 4a.

The connecting shaft 4 is inserted into the shaft insertion holes 11, 21 and 3
When inserting into 1, the opposite side plates 1a, 2a and 3a of the above-mentioned respective metal fittings 1 to 3 are piled up as shown in FIG. The connecting shaft 3 is pushed into the holes 11, 21, and 31 from the lateral direction as shown by the chain line in FIG.
It suffices to position b in the shaft insertion holes 11, 21, and 31.
Then, as shown by the solid line in FIG. 5, the connecting shaft 4 descends by its own weight and the axis line with the shaft inserting holes 11, 21, 31 is displaced, and both ends 4a, 4a of the connecting shaft 4 are edged of the shaft inserting hole 31. The connecting shaft 4 does not come off unless the shaft insertion hole 31 and the axis line of the connecting shaft 4 are in contact with each other and locked by the stopper.

In the above embodiment, both ends 4a, 4a of the connecting shaft 4 are used.
Although only the shaft insertion holes 11, 21, and 31 are formed to have substantially the same diameter or slightly smaller than the shaft insertion holes, the central portion 4c of the connecting shaft 4 has the same diameter as the both end portions 4a and 4a as shown in FIG. Only the fitting portions 4d, 4d with the shaft insertion holes 11, 21, 31 between the central portion 4c and the both end portions 4a, 4a are made smaller in diameter than the both end portions 4a, 4a and the central portion 4c. You may form. In the illustrated example, the length of the central portion 4c is the same as or slightly shorter than the distance between the innermost facing side plates 2a, 2a in the state where the facing side plates 1a, 2a, 3a are superposed on each other. The length of the joint portions 4d and 4d is formed to be equal to or slightly longer than the length in which the facing side plates 1a, 2a and 3a are overlapped.

With the above structure, the connecting shaft 4 can be removed unless the shaft insertion holes 11, 21, 31 and the both ends 4a, 4a and the central portion 4c of the connecting shaft 4 coincide with each other. Therefore, the connecting shaft 4 can be further prevented from falling off.

The above-mentioned main body metal fitting 1, locking metal fitting 2, and pressing metal fitting 3 may be constructed in any suitable manner, but in this embodiment, they are constructed as follows. That is, the band B is attached to the body fitting 1.
Band through holes 12 for inserting and fixing one end B1 of the band B are formed in the holding metal fitting 3 and the locking metal fitting 2.
2 and 2 are provided respectively. Further, in the main body metal fitting 1 and the holding metal fitting 3, the engaging concave / convex portions 33 and 13 for holding the press metal fitting 3 in the state of completely closing the main metal fitting 1 and the press metal fitting 3 are completely closed in the main metal fitting 1. Engaging concave and convex portions 34 and 14 which are temporarily fixed and held in a state slightly before are respectively provided.

In the case of the engaging concave / convex portions 33.13, 34.14, as shown in FIGS.
The convex portions (projections) 13 and 14 are formed on the opposing side plates 1a and 1a, and the concave portions (openings) 33 and 34 that engage with them are formed on the opposing side plates 3a and 3a of the holding metal fitting 3.
A convex portion is formed on the holding metal fitting 3, and a concave portion that engages with the pressing metal fitting 3 is formed on the main body metal fitting 1.

Further, a substantially arcuate elastic piece 23 around which the other end of the band is wound is integrally provided on the base of the locking metal fitting 2. Particularly, in the case of the drawing, the elastic piece 23 is formed integrally with the substrate surface of the U-shaped locking metal fitting 2 continuously, and the connecting shaft 4 is formed in a substantially semi-circular shape so as to surround the connecting shaft 4 substantially concentrically.
A slit-like gap S is formed between both ends of the arc-shaped elastic piece 23 in the generatrix direction and the opposing side plate 2a of the locking fitting 2 so that the elastic deformation can be performed in the radial direction. Further, the end portion 2a1 of each of the facing side plates 2a on the side of the elastic piece 23 projects further outward than the elastic piece.

In the above structure, when a utility pole band such as stainless steel or synthetic resin is fastened and fixed, one end B1 of the band B wound around the utility pole P as shown in FIG.
Is folded back through the band through holes 12, and the folded-back portion is sandwiched between the body fitting 1 and the electric pole P or the like to be fixed. Then, with the locking metal fitting 2 and the pressing metal fitting 3 opened, the other end B2 of the band B is connected between the main metal fitting 1 and the locking metal fitting 2 and between the locking metal fitting 2 and the pressing metal fitting 3. The band B is attached to the circumferential surface of the arcuate elastic piece 23 of the locking metal fitting 2 through the space.
Wrap around. At that time, the end portion 2a1 of the opposite side plate 2a of the locking fitting 2 on the elastic piece 23 side is projected outwardly from the elastic piece 23, so that the end surface 2a1 serves as a guide and the peripheral surface of the elastic piece 23 is guided. You can wrap a band around.

Then, the locking metal fitting 2 and the pressing metal fitting 3 are overlapped with each other so that the band end B2 is sandwiched between the locking metal fitting 2 and the pressing metal fitting 3, as shown in FIG. Then, the presser piece 32 provided on the presser fitting 3 is moved to the band end B
While pushing 2 into the opening 22 formed in the locking metal fitting 2, the band end B2 is bent and locked to prevent it from coming off. Further, in this state, the tip of the band end B2 is folded back at the free end 23 side of the locking fitting 2 as shown in FIG. At this time, if the band end B2 folded back on the free end side of the locking fitting 2 is too long, it is cut with a cutter or the like as necessary.

Next, while the band end B2 is sandwiched between the locking metal fitting 2 and the pressing metal fitting 3 as described above, the locking metal fitting 2 and the pressing metal fitting 3 are pinched and held by fingers, as shown in FIG. Rotate in the direction of the arrow. Then, the band B has an arcuate elastic piece 23.
When the band B is tensioned by being pulled around while being wrapped around, the elastic piece 23 bends in the radial direction, that is, the direction of the connecting shaft 4, and acts as a cushion when an excessive tensile force is applied to the band B. As a result, the tension is alleviated, and even a metal band or other material with little elongation can be moderately tensioned.

Further, the locking metal fitting 2 and the pressing metal fitting 3 are rotated to be closed on the main metal fitting 1 side. At that time, an uneven fitting for temporary fixing provided on the pressing metal fitting 3 and the main metal fitting 1 is provided. The mating portions 34 and 14 are engaged and temporarily locked in the state shown in FIG. 9, and the finger holding the locking metal fitting 2 is released. Then, as shown in FIG. By closing the inside of the body fitting 1, it is possible to prevent a finger from being caught between the locking fitting 2 and the body fitting 1.

As shown in FIG. 10, when the locking metal fitting 2 and the pressing metal fitting 3 are closed in the main metal fitting 1, the engaging concave portion 33 of the pressing metal fitting 3 engages with the engaging convex portion 13 of the main metal fitting 1. In this state, the band B can be tightened and fixed in a tensioned state. The band tightening tool described above is not limited to a utility pole band, but can be, for example, a packing band or various other bands.

As described above, in the above-described embodiment, the shaft coupling member composed of the main body metal fitting 1 which constitutes the band tightening tool, the locking metal fitting 2 and the pressing metal fitting 3 is connected by the connecting shaft 4 so as to be relatively rotatable. , At least both ends 4a of the connecting shaft 4
Is formed to have a diameter substantially the same as or slightly smaller than that of the shaft insertion holes 11, 21, and 31 and at least a fitting portion with the shaft insertion holes 11, 21, and 31 other than the both end portions is formed to have a smaller diameter than that. With a simple structure, the shaft coupling members can be easily and satisfactorily connected.

In the above embodiment, the body fitting 1 and the locking fitting 2 are provided.
The present invention has been applied to a band tightening tool composed of three members, namely, a metal fitting and a holding metal fitting 3. It can also be applied to attachments.

[Embodiment 2] FIGS. 11 to 14 show an embodiment in which the present invention is applied to an opening / closing hinge. FIG. 11 is an exploded perspective view showing one example of the opening / closing hinge, and FIG. 14 is a sectional view of a portion, FIG. 13 is an exploded perspective view of another example, and FIG.
FIG. 4 is a cross-sectional view of a main part in an assembled state.

In the embodiment shown in FIGS. 11 and 12, the cylindrical shaft insertion holes 51 and 61 formed at the ends of the pair of blades 5 and 6 are used.
In the opening / closing hinge configured to insert the connecting shaft 7 into the opening and connect the opening / closing hinge, the shaft insertion holes 51 and 61 of the blades 5 and 6 are provided.
Are alternately provided, and both end portions 7a of the connecting shaft 7 that are inserted into the shaft insertion holes 51 and 61 are connected to the shaft insertion holes 51 and 61.
The diameter is the same as or slightly smaller than the above, and the other portion 7b is formed to have a smaller diameter than the both end portions 7a.

When the connecting shaft 7 is inserted into the shaft insertion holes 51 and 61, it may be inserted into the shaft insertion holes 51 and 61 in order as in the case of the band tightening tool, and as shown in FIG. In the opened state, the connecting shaft 7 and the shaft insertion hole 51
The shaft center is deviated from 61, and the connecting shaft 7 is locked at both end portions 7a and 7a of the connecting shaft 7 so as not to come off.
As long as the axes of and do not coincide with each other, the connecting shaft 7 has the shaft insertion hole 51.
・ It does not fall out of 61. 5 in the figure
Reference numerals a and 6a are mounting holes.

In the embodiment of FIGS. 13 and 14, the shaft insertion hole 51 in the central portion of the blade 5 in the above embodiment is omitted, and the corresponding central portion 7c of the connecting shaft 7 is the same as the both end portions 7a. The diameter of the shaft insertion holes 51, 61 is slightly smaller than that of the shaft insertion holes 51, 61, and the other portion 7d is smaller in diameter than the both ends. As long as the axes of the end portion 7a and the central portion 7c of 7 do not coincide with each other, the connecting shaft 7 will not come off from the shaft insertion hole, and the falling of the connecting shaft 7 can be further reduced.

The above embodiments have been described by exemplifying the case where the invention is applied to the band tightening tool and the opening / closing hinge. However, other than these, as long as it is a shaft coupling member which is rotatably coupled by a coupling shaft, It can also be applied to various articles and mechanisms.

[0031]

As described above, in the connecting structure of the shaft connecting member according to the present invention, at least both ends of the connecting shaft for connecting the shaft connecting member so as to be rotatable relative to each other have the same diameter as the shaft insertion hole or A connecting structure that is simple in structure and easy to assemble is provided by a simple structure that is formed to be slightly smaller and at least a fitting portion other than the both end portions with at least the shaft insertion hole is formed to have a smaller diameter than the both end portions. What you can do,
For example, it is effective as a connecting structure for a band fastening tool, an opening / closing hinge, and other shaft coupling members.

[Brief description of drawings]

FIG. 1 is a side view of a band tightening tool to which the present invention is applied in a half-opened state.

FIG. 2 is a bottom view of the band tightening tool.

FIG. 3 is a plan view showing a state in which the band tightening tool is closed.

FIG. 4 is a side view showing a state in which the band tightening tool is closed.

5 is a cross-sectional view taken along the line AA in FIG.

FIG. 6 is a diagram of the same as the modification example.

FIG. 7 is a process explanatory view showing a procedure for fastening and fixing a band with the band fastening tool.

FIG. 8 is the same as above.

FIG. 9 is the same as above.

FIG. 10 is the same as above.

FIG. 11 is an exploded perspective view showing an example of an opening / closing hinge to which the present invention is applied.

FIG. 12 is a cross-sectional view of a main part in a state where the opening / closing hinge is assembled.

FIG. 13 is an exploded perspective view showing another example of the opening / closing hinge to which the present invention is applied.

FIG. 14 is a cross-sectional view of a main part in a state where the opening / closing hinge is assembled.

[Explanation of symbols]

 1 shaft connecting member (main body metal fitting) 2 shaft connecting member (locking metal fitting) 3 shaft connecting member (holding metal fitting) 4, 7 connecting shafts 4a, 7a both ends 5, 6 shaft connecting member (blade)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takeyuki Suzuki 4-2-4 Kachidoki, Chuo-ku, Tokyo Suda Manufacturing Co., Ltd. (72) Inventor Yasuji Ohashi 4-2-4 Kachidoki, Chuo-ku, Tokyo Shares Company Suda Manufacturing Co., Ltd. (72) Inventor Tadahiro Mukata 4-24 Kachidoki, Chuo-ku, Tokyo Stocks Suda Manufacturing Co., Ltd. (72) Inventor Shigeyuki Kanematsu 4-2-4 Kachidoki, Chuo-ku, Tokyo Stocks Suda Manufacturing Co., Ltd.

Claims (1)

[Claims] 1. A connecting structure of a shaft connecting member, wherein a plurality of members to be connected to each other are connected so as to be relatively rotatable by inserting a connecting shaft into a shaft insertion hole formed in each member. The diameter of at least both ends of the connecting shaft is formed to be the same as or slightly smaller than that of the shaft insertion hole, and at least the fitting portion other than the both ends and the shaft insertion hole is formed to have a smaller diameter than the both ends. A connecting structure for a shaft coupling member, characterized by: