JP3016200B2 - Split type fitting - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a so-called resin-coated steel pipe in which the surface of a thin-walled steel pipe is coated and bonded with a synthetic resin, as well as ordinary bare steel pipes, light metal pipes, synthetic resin pipes, and wooden rods. In the following, joints used for assembling a lightweight three-dimensional structure with a pipe member, in particular, each half-split member obtained by dividing the joint into a plurality of parts along the axis of the socket portion, is attached to each socket portion. It belongs to the technical field of split type joints that unite a plurality of pipes by joining the pipes together and joining them together with bolts and nuts penetrating the half-split-shaped members between them. The present invention relates to a split type joint including a half-split member having a temporary fixing function and a nut which exhibits a temporary fixing function when set in a bolt hole of the half-split member.

[0002]

2. Description of the Related Art As a typical example of a conventional split-type joint, a typical example is shown as a T-type joint in FIG. 10, in order to connect two pipes 1 and 1 'so as to cross each other in a right-angled T-shape. A plurality of joints each having a penetrating socket portion 2 corresponding to a T-shaped head portion and a non-penetrating socket portion 3 corresponding to a T-shaped leg portion are arranged along the axis of the socket portion (two in the illustrated example). ), Each of the half-split members 4, 4, and the half-split members are combined with each other by sandwiching the pipes 1, 1 ′ between the socket portions 2, 3. By fastening the bolts 5 passing between the four parts in a direction perpendicular to the dividing surface to the nuts 6, the half-shaped members 4, 4 are assembled as joints, and at the same time, the pipes 1, 1 'are united. This is a configuration that achieves the purpose of connecting to

[0003] Such split type joints are not limited to the T-type joints, but are orthogonal joints in three or four directions, cross-orthogonal joints, as required when constructing a lightweight three-dimensional structure using a pipe material. A variety of types of joints or parallel joints for connecting a plurality of pipes in parallel are known and used.

A split joint is usually made by press forming a steel plate, but in some cases, it is also made and used as a cast product of aluminum or other light metals, or an injection molded product of a synthetic resin.

[0005] The split type joint has an exceptional diameter of 26 mm to 32 mm.
It is used for connecting and assembling tubing. The number of bolts 5 and nuts 6 used increases or decreases according to the number of joints.
In any case, the heads of the bolts 5 and the nuts 6 are sunk into each half-split member 4 to improve the aesthetic appearance, and to improve the feel to prevent danger when a person or an object collides. A recess 7 is prepared at a bolting position, and a bolt hole 8 is provided at the bottom of the recess 7. The nut 6 is integrally provided with a short cylindrical protrusion 6a that protrudes in the same direction as the screw hole, and the nut 6 is positioned by inserting the cylindrical protrusion 6a into the bolt hole 8. ing.

Therefore, the procedure for constructing a lightweight three-dimensional structure using such a split joint and a pipe material is as follows. First, a split type joint of a corresponding form (model) is selected, and one of the split type joints is selected. The corresponding portions of the tube materials 1 and 1 'are fitted into the socket portions 2 and 3 of FIG. Next, the other half-shaped members 4 are symmetrically fitted and united. In this case, when the dovetail-shaped unevenness 9 is provided as in the example of FIG.
The mutual fitting is performed at the same time. Thereafter, the nut 6 is set in the concave portion 7 of one half-shaped member 4 and screwed into the nut 6 through the bolt 5 from the bolt hole 8 of the other half-shaped member 4, and then tightened firmly to assemble the joint. Simultaneously achieve the purpose of connecting tubing.

[0007]

The conventional split type joint is:
When assembling with bolts and nuts (connection of pipes), as described above, the corresponding portions of the pipes 1 and 1 ′ are fitted into the sockets 2 and 3 of one half-shaped member 4 and the other half-shaped The members 4 are symmetrically fitted and united, a nut 6 is set in a recess 7 of one half-shaped member 4, and a bolt 5 passed through a bolt hole 8 of the other half-shaped member 4 is connected to the nut 6. It requires a procedure of screwing in and tightening strongly.

[0008] In short, while maintaining the fitting relationship between the pipe member and each half-split member, the state where the nut is set in the bolt hole, and the bolt is screwed in from the other side and fastened, it is necessary to have a number of hands. If complicated procedures and complicated operations are required, and any of the conditions is broken, the relationship between the half-split member (joint), the pipe material, and the nut must be disassembled and redone.

In particular, even if the nut is taken out from a predetermined position (such as a storage box) and the nut is set in one of the bolt holes of the half-split member, the nut is immediately held unless it is held with one hand or the like. It falls off. When the bolt is passed through the bolt hole with the other hand and screwed into the nut, the nut pressed by the bolt often falls off. If the nuts and bolts are dropped by mistake, the dropped nuts and bolts will get inside the machinery and equipment installed on the already assembled three-dimensional structure, and it will take a lot of time and effort to search and recover There is a problem.

[0010] Further, if the pipes are connected in a complicatedly complicated portion of the pipes of the three-dimensional structure, or if the connection position of the pipes is high in a large three-dimensional structure, the connection work becomes more difficult. Master. The above connection work is not only difficult for a beginner, but also not easy for a skilled worker. In addition, since the operation is one-handed, the work efficiency is poor, and it takes a very long time to complete the three-dimensional structure.

[0011] Therefore, an object of the present invention is to slowly and calmly carry out the connecting operation of the pipe material with sufficient room for using both hands and a sense of stability. An object of the present invention is to provide a split joint improved to have a temporary fixing function so that connection can be performed.

It is an object of the present invention to provide a half-split member improved to have a function of temporarily fixing a pipe fitted into a socket portion, and a structure in which a temporary fixing function is exerted during the joining of two half-split members. It is an object of the present invention to provide an improved half-split member and a split joint including a nut improved so as to perform a temporary fixing function when set in a bolt hole of the half-split member.

[0013]

As a means for solving the above-mentioned problems, a split joint according to the first aspect of the present invention is a split type joint in which the joint is divided into a plurality of parts along the axis of its socket. In the split type joint which unites a plurality of pipes by uniting the pipe-shaped members with each other by sandwiching the pipe in each socket portion, and fastening the half-split-shaped members with bolts and nuts passing between them, A part of the divided edge of the socket portion of the half-split member is provided with a concave and convex portion having a shape and a size that fits mutually with a mating semi-cylindrical portion in the circumferential direction so as to hold the socket portion. It is characterized in that the holding angle is formed to a size of 180 ° or more.

[0014] The split joint according to the second aspect of the present invention,
Similarly, each half-split member obtained by dividing the joint into a plurality of parts along the axis of the socket portion is combined with each other with a tube material sandwiched between the socket portions, and bolts and nuts that pass the half-split member between each other are used. In a split type joint for joining a plurality of pipes together by fastening, an L-shaped projection for inserting a front end of the pipe is provided on an inner surface of a socket portion of a half-split member.

The split joint according to the third aspect of the present invention
Each half-split member obtained by dividing the joint into a plurality of parts along the axis of the socket part is combined with each other with a tube material sandwiched between the socket parts, and fastened with bolts and nuts that pass the half-split members between each other In the split type joint for connecting a plurality of pipes together by joining the pipes, an adhesive is provided on the inner surface of the socket portion of the half-split-shaped member for fitting the pipes into the socket.

[0016]

[0017] The invention of claim 4, wherein, in the split type joint according to claim 1 or 2 or 3, half-like paired
The nuts to be fastened to the bolts passing between the members
A cylindrical projection that projects in the same direction as the screw hole of
At the same time, a ridge for interference fit is provided in the axial direction of the outer peripheral surface of the cylindrical projection in an inclined state in which the height of the ridge decreases toward the tip, and the nut engages the bolt hole of the half-shaped member with the cylindrical projection. Fit tightly and temporarily fix and fasten with bolt
And wherein the dividing.

[0018]

1 and 2 show an embodiment and an embodiment of the invention described in claim 1. FIG.

First, FIG. 1A shows one half-shaped member 4 constituting the T-shaped joint shown in FIG. 10 for convenience of illustration. The figure shows an example of a configuration in which a convex portion 11 having a shape and size that fits closely with a concave portion 12 having a cutout shape are provided in the circumferential direction. Therefore, although illustration is omitted, another half-shaped member to be combined therewith has the same corresponding portion,
A concave portion into which the convex portion 11 fits and a convex portion into which the concave portion 12 fits conversely are provided symmetrically.

Therefore, when the two half-shaped members 4 and 4 are connected to each other as shown in FIG. 1B to connect the pipe members, the half-shaped members 4 and 4 are joined by the arc angle θ of the convex portion 11. The holding angle α at which the socket portion 3 of the member 4 holds the tube material is substantially increased (α> 180 °). For this reason, the socket portion 3 tightly holds the tube at the above-described holding angle, and exhibits a temporary fixing function. Therefore, when this half-shaped member 4 is used, there is no fear that the tube fitted in the socket portion 3 will be separated even if it is not held down with one hand, so that it is possible to release the hand and proceed with another work without delay. , Efficient.

FIG. 2 shows a projection 13 having a dovetail shape having a shape and size that fits in a part of the divided edge 4a of the non-penetrating socket portion 3 in the similar half-split member 4.
And 14 (or a notch-shaped recess 14 ′) are provided alternately. Accordingly, another half-shaped member (not shown) is provided symmetrically with a dovetail-shaped uneven portion in which the uneven portions 13 and 14 are fitted at the same corresponding portions.

Therefore, when the two half-shaped members 4, 4 are combined with each other to connect the pipe members, the socket portion 3 of the half-shaped member 4 is also shifted by the arc angle of the convex portion 13. The holding angle for holding the tube material is substantially increased, and the socket portion 3 exhibits a temporary fixing function of tightly holding the tube material.

Next, FIGS. 3 to 5 show an embodiment of the second aspect of the present invention.

FIG. 3A shows an embodiment relating to one half-shaped member 4 constituting a T-shaped joint, also for convenience of illustration, but the inner surface of the non-penetrating socket portion 3 and a recess 7 ( An example of a configuration in which an L-shaped projection 15 for inserting the front end of the tube material 1 'is provided at a position adjacent to the back surface portion (see FIG. 10). Therefore, the same projection 15 as described above is provided on another half-shaped member not shown. In short, the tube 1 'fitted into the socket 3 has its front end inserted into the gap between the L-shaped projections 15 as shown in FIG.

FIG. 4 is a sectional view of the same half-shaped member 4 in which a portion including a part of the divided edge 4a of the non-penetrating socket portion 3 is cut and raised inward so that the end of the tube 1 'can be inserted into the inner surface. An example of a configuration in which a projection 16 having a shape is provided is shown. Therefore, also in the case of this embodiment, the temporary end function can be exhibited in relation to the tube by inserting the front end of the tube 1 'fitted into the socket portion 3 into the gap between the L-shaped projections 16.

FIG. 5 shows an embodiment in which two L-shaped projections 17 are integrally formed on the inner side surface of the non-penetrating type socket portion 3 of the same half-shaped member 4 on both sides along the dividing edge 4a. Is shown.

FIG. 6 shows an embodiment of the third aspect of the present invention, in which the double-sided adhesive tape 1 is provided on the inner surface of the non-penetrating type socket portion 3 in the same half-shaped member 4 so as to be long in the arc direction.
8 shows an embodiment in which 8 is provided. When the tube member 1 'is fitted into the socket portion 3 and pressed slightly, the tube member 1' is adhered to the double-sided tape 18 and a temporary fixing function is exhibited.

Next, FIG. 7 shows a reference embodiment.

FIG. 7A shows an inner surface of the non-penetrating socket portion 3 of the half-shaped member 4 and a recess 7 (FIG. 1).
0) at the positions on both sides of the rear surface
And the other is a hollow sleeve 2 into which the protrusion 20 fits.
1 shows an embodiment in which 1 is provided in a pair. Protrusion 20
Has a tapered taper that fits slightly tightly into the hole in the sleeve 21. Therefore, when such a pair of half-split members 4, 4 are united as shown in FIG. 7B, the projections 20 fitted to each other from an intermediate stage.
A temporary fixing function is exerted by the frictional force between the sleeve and the hollow sleeve 21. Therefore, from the stage of the temporarily fixed state before the union of the pair of half-split members 4, 4 is completed, the relationship between the pipe material and each socket portion is confirmed and corrected, and then the union is completed. Can be retained.

FIGS. 8 and 9 show an embodiment of the present invention.

As described in connection with the conventional example shown in FIG. 10, the outer circumference of the cylindrical projection 6a of the nut 6, which is indispensable for a commonly used split type joint, has a circumference of 3 in the illustrated example. It is characterized in that the protrusions 6b for interference fit are provided at three equally divided positions. The ridge 6b is shown in FIG.
As shown in FIG. 9 and FIG.

Accordingly, the cylindrical projection 6b of the nut 6 is
When inserted into the bolt hole 8 as illustrated in FIG. 8B, the bolt 6 is temporarily fixed to the bolt hole 8 by the interference fit effect of the projection 6b. Therefore, there is no particular need to support the nut 6 by hand, and there is no fear that the nut will easily fall off when it is screwed through the bolt 5. Therefore, when this nut 6 is used in combination with a split joint (half-split member) improved to exert the temporary fixing function as described above, the connection work of the pipe material can be further reduced.

Although the above embodiments have been described with respect to a T-shaped joint, the present invention is not limited to this. The same applies to known split joints.

[0034]

[Effects of the present invention] When the split joint according to the first to fourth aspects of the present invention is used, the relationship between each half-shaped member and the pipe material, and the nut set in the bolt hole of the half-shaped member is temporarily reduced. In any case, since the temporary stop function is performed to the extent that the hands can be completely released, the worker can use the both hands of the subsequent connecting steps more than enough to proceed with a content that has a psychological margin and a sense of stability. Therefore, the connecting operation of the pipe members can be performed slowly and surely, and the operation can be performed efficiently and with high quality.

In addition, the nut is inadvertently dropped, and the time required to search for the nut and the trouble of picking it up are hardly required. Therefore, even with a three-dimensional structure that is complicated and requires a large number of pipes and joints, the use of this split joint makes it possible to use a normal one-piece joint.
It can be assembled in a required time of about / 4. Also, since no special skills are required, even a weak woman or a beginner can easily make a structure.

[Brief description of the drawings]

FIG. 1A is a perspective view of a half-split member constituting a split-type joint of the present invention, and FIG. 1B is an end view in a used state where a pair of the half-split members are combined.

FIG. 2 is a perspective view showing a half-split member constituting a different split type joint according to the present invention.

FIG. 3A is a perspective view showing a half-split member constituting a split type joint according to the present invention, and FIG. 3B is a sectional view of a used state in which a pair of the half-split members are combined.

FIG. 4 is a perspective view showing a half-split member constituting a split joint according to the present invention.

FIG. 5 is a perspective view showing a half-split member constituting a split joint according to the present invention.

FIG. 6 is a perspective view showing a half-split member constituting a split joint according to the present invention.

FIG. 7A is a perspective view showing a half-split member constituting a split type joint according to the present invention, and FIG. 7B is a cross-sectional view of a main part in a used state where a pair of the half-split members are combined.

FIG. 8A is an enlarged plan view showing a nut used in the split joint of the present invention, and FIG. 8B is a cross-sectional view of the nut in a used state where the nut is set in a bolt hole.

FIG. 9 is a perspective view showing the nut.

FIG. 10 is an exploded perspective view showing a conventional general split type joint in a disassembled state.

[Explanation of symbols]

 2, 3 Socket part 4 Half-split member 1, 1 'Tube material 5 Bolt 6 Nut 4a Dividing edge 12 Concave part 11 Convex part 14 Concave part 13 Convex part 15 L-shaped protrusion 16 L-shaped protrusion 17 L-shaped protrusion 18 Tape 20 protrusion 21 sleeve 6a cylindrical protrusion 6b ridge

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yasuhiro Yoshino 980-1 Hama Tome, Yaizu-shi, Shizuoka Prefecture Inside the Yaizu Plant of Yoshino Corporation (72) Inventor Masahiro Yoshino 1-18-5 Toro, Shizuoka-shi, Shizuoka Co., Ltd. Inside Yoshino Works (56) References Japanese Utility Model Sho 54-106467 (JP, U) Japanese Utility Model Sho 61-139377 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F16B 7/00 -7/22 A01G 9/14 E04B 1/58 E04G 7/22

Claims (4)

(57) [Claims] 1. A half-split member obtained by dividing a joint into a plurality of parts along the axis of its socket portion is united with each other with a tube material interposed between the socket portions, and the half-split members are passed through each other. In a split type joint that joins a plurality of pipes together by fastening with bolts and nuts, a part of the divided edge of the socket part of the half-split member is connected to the mating semi-cylindrical part mutually. An uneven portion having a fitting shape and size is provided in the circumferential direction so that the holding angle of the socket portion is 1
A split joint characterized by being formed in a size of 80 ° or more. 2. The half-split members obtained by dividing the joint into a plurality of parts along the axis of the socket portion are united with each other with a tube material sandwiched between the socket portions, and the half-split members are passed through each other. In a split type joint for joining a plurality of pipes together by fastening with bolts and nuts, an L-shaped projection is provided on the inner surface of the socket portion of the half-split member, into which the front end of the pipe to be fitted is inserted. Split joint characterized by the following. 3. The half-split members obtained by dividing the joint into a plurality of parts along the axis of the socket portion are united with each other with a tube material sandwiched between the socket portions, and the half-split members are passed through each other. A split type joint for joining a plurality of pipes together by fastening with bolts and nuts, characterized in that the inner surface of the socket portion of the half-split-shaped member is provided with a bonding means for the pipe to be fitted therein. Split type joint. 4. A bobbin passing between a pair of half-split members.
The nut to be fastened to the bolt in the same direction as the screw hole.
A cylindrical protrusion is provided, and a protrusion for interference fit is provided in the axial direction of the outer peripheral surface of the cylindrical protrusion toward the tip.
The nut is provided in a slanted state,
It is characterized in that the cylindrical projection is tightly fitted into a bolt hole of the half-split-shaped member and temporarily fixed to be fastened to the bolt ,
Split joint according to claim 1 or 2 or 3.