JP6749572B2 - Pipe joint - Google Patents

Description

The present invention relates to a pipe joint for joining pipes that can be assembled to a frame such as a rack or shelf.

As this type of conventional technology,
Forming quadrangular recesses on each side of the hexahedron,
Inside each quadrangular recess, female threaded holes facing the inside of the hexahedron are provided to form a body block,
Forming a quadrangular convex portion that fits into the quadrangular concave portion on the outer surface of one end of the hollow arm block;
Provided at one end of the hollow arm block with a through hole that matches the female screw hole,
A bolt head is rotatably engaged with the inner surface of one end of the hollow arm block,
A bolt that is screwed into the female screw hole through the through hole,
The outer peripheral four sides of each surface of the hexahedron and the outer peripheral four sides of one end of the hollow arm block are parallel in the fitted state of the quadrangular concave portion and the quadrangular convex portion,
Inside one of the four outer sides of each side of the hexahedron, four outer sides of one end of the hollow arm block are arranged with a space therebetween.
There is known a square pipe joint component (for example, refer to Patent Document 1) in which the main body block, the hollow arm block, and the bolt are formed so as to be disassembled and assembled.

Japanese Unexamined Patent Application Publication No. 2003-049814 (claim 1, claim 4, FIG. 1, FIG. 2, FIG. 5, etc.)

However, in the above square pipe joint component, the hub flat head bolt is screwed into the set screw hole of the hollow arm block from the small through hole of the square pipe to fix the square pipe to the hollow arm block. However, there is a problem in that the square pipe is exposed and looks bad and the square pipe tends to be insufficiently fixed.

Further, when the square pipe is not joined to the surface of the main body block, the hollow arm block to which the square pipe is fitted is also not joined. Therefore, in the surface of the main body block where the square pipe is not joined, a quadrangular recess or a female screw hole is formed. However, there is a problem that it is exposed and is not good-looking and that dust (dust) is likely to be accumulated inside the quadrangular recess and the female screw hole.

The present invention has been made in view of the above circumstances and problems, and a pipe joint that looks good and can firmly fix the pipe, and that does not collect dust (dust) when the pipe is not joined The purpose is to provide.

The first invention for achieving the above object is
Two upper and lower members respectively constituting the upper surface and the lower surface of the hexahedron;
Four side members respectively constituting the four side surfaces of the hexahedron,
The base of the upper and lower members is formed into a truncated pyramid shape,
The main body of the upper and lower members is formed in a rectangular plate shape,
On the inner surface of the upper and lower members facing the inner space of the hexahedron, an insertion groove having a quadrangular shape in a plan view extending in the circumferential direction is provided,
Four notches are provided on the outer side of the insertion groove of the upper and lower members at intervals in the circumferential direction,
The side member is formed into a truncated pyramid shape,
An intermediate portion is formed between the base and the head of the truncated pyramid of the side member,
The projecting portion is provided on the outer surface facing the outside of the hexahedron in at least one of said upper and lower members and said side members,
The bolt head hole provided in the inner surface of the upper and lower members or side member said projecting portion is provided,
At the bottom of the bolt head hole, a bolt hole is provided so as to penetrate from the bolt head hole toward the tip of the protrusion,
Insert the middle portion of the side member into the notch of the upper and lower members,
Insert the head of the side member into the insertion groove of the upper and lower members,
Pressing the base of the side member to the base of the upper and lower members,
Pressing the base parts of the side members and the head parts together,
The hexahedron is formed by detachably sandwiching the four side members between the two upper and lower members.

The second invention is
Providing a locking claw on the bottom of the notch of the upper and lower members,
Locking claws are provided on the upper end and the lower end of the middle part of the side member,
The locking claws of the side members are detachably locked to the locking claws of the upper and lower members.

In a third aspect of the invention, the intermediate portion of the side member has a cross-shaped front view shape.

The fourth invention is
Forming a cross shape in a front view of the intermediate portion of the side member,
Locking claws are projectingly provided on the left end and the right end of the intermediate portion of the side member.

Fifth invention is the protruding portion is provided with at least one reinforcing projections on the outer surface side of the vertical member or side member provided.

According to a sixth aspect of the present invention, ribs extending in the length direction are provided on the outer peripheral surface of the reinforcing protrusion.

A seventh invention is one in which the protruding portion is a nut hole provided in the inner surface of the vertical member is not provided.

The eighth invention is
The nut holes provided in the inner surface of the vertical member to which the protruding portion is provided,
The bolt head hole is provided at the bottom of the nut hole.

According to the first aspect of the invention, the bolts for joining the upper and lower members or the side members provided with the projecting portion and the pipe are not exposed, so that the appearance is good. Further, the pipe can be firmly fixed because the pipe can be joined to the upper and lower members or the side members in a state where the protruding portions of the upper and lower members or the side members are inserted into the insertion holes of the pipe. Further, when the pipes are not joined, it is sufficient to attach the upper and lower members or the side members which are not provided with the protruding portions, and therefore dust (dust) is hard to collect.

According to the second aspect, it is possible to prevent the upper and lower members and the side members from coming off from each other.

According to the third aspect of the invention, even if the side member is rotated by 90 degrees, the intermediate portion of the side member can be inserted into the cutout portions of the upper and lower members, so that it is not necessary to pay particular attention to the mounting direction of the side member.

According to the fourth invention, it is not necessary to pay particular attention to the mounting direction of the side member, and even when the side member is rotated by 90 degrees, the engaging claws of the side member are attached to and detached from the engaging claws of the upper and lower members. Can be locked freely.

According to the fifth aspect, the pipes can be joined more firmly.

According to the sixth aspect, the strength of the reinforcing protrusion can be improved.

According to the seventh aspect, since the nut for fixing the extension part can be housed in the nut hole, the extension part can be easily attached to the upper and lower members that are not provided with the projecting portion.

According to the eighth aspect, the nut for fixing the extension part can be housed in the nut hole, so that the extension part can be easily attached to the upper and lower members provided with the protrusions.

It is a perspective view of the upper and lower members in the embodiment. It is a top view of the upper and lower members of FIG. It is a perspective view of the side member in an embodiment. It is a front view of the side member of FIG. It is a perspective view showing the state where the side member was attached to the lower upper and lower members. It is sectional drawing of FIG. It is a perspective view of the upper and lower members provided with a protrusion. It is a perspective view which shows the state which turned the protrusion part of the upper and lower members of FIG. 7 upward. FIG. 8 is a front view of the upper and lower members of FIG. 7. It is a perspective view of the side member provided with the protrusion part. It is a front view of the side member of FIG. It is a perspective view which shows an example of the pipe joint for joining a pipe in 3 directions. It is a schematic sectional drawing of FIG. It is a perspective view showing an example of a pipe joined to an upper and lower member or a side member provided with a projection part. It is a principal part enlarged front view which shows the state which joined the pipe to the upper and lower members provided with the protrusion part. It is a principal part enlarged front view which shows the state which joined the pipe to the side member in which the protrusion part was provided. It is a schematic perspective view which shows an example of the rack assembled using several pipe joints, several pipes, etc.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 to 13, the pipe joint 1 according to the present embodiment includes two upper and lower members 3 that respectively configure an upper surface portion and a lower surface portion of the hexahedron 2 and four side surface portions 4 of the hexahedron 2. It is provided with one side member 4.

As shown in FIGS. 1 and 2, the base portion 3a of the upper and lower members 3 is formed in a truncated pyramid shape. The main body 3b of the upper and lower members 3 is formed in a rectangular plate shape. On the inner surface side of the upper and lower members 3 facing the internal space of the hexahedron 2, an insertion groove 5 extending in the circumferential direction and having a quadrangular shape in plan view is provided. On the outer side of the insertion groove 5 of the upper and lower member 3, four cutouts 6 are provided at intervals in the circumferential direction.

As shown in FIGS. 3 and 4, the side member 4 is formed in a truncated pyramid shape, and an intermediate portion 4c is formed between the quadrangular truncated pyramid-shaped base portion 4a and the head portion 4b of the side member 4. There is.

As shown in FIGS. 5 to 13, for example, a protrusion 7 is provided on the outer surface of the upper and lower members 3 and the two adjacent side members 4 facing the outside of the hexahedron 2 . Bolt head holes 8 are provided on the inner surface side of the upper and lower members 3 or the side members 4 provided with the projecting portions 7. A bolt hole 9 is provided at the bottom of the bolt head hole 8 so as to penetrate from the bolt head hole 8 toward the tip of the protrusion 7. The cross-sectional shape of the projecting portion 7 may be a triangular shape, a polygonal shape, a circular shape, an elliptical shape, etc., in addition to the quadrangular shape.

On the outer surface side of the upper and lower members 3 or the side members 4 provided with the protruding portions 7, for example, four reinforcing protruding portions 10 having an L-shaped cross section are provided. Here, if the ribs 11 extending in the length direction are provided on the outer peripheral surface of the reinforcing protrusion 10, the strength of the reinforcing protrusion 10 can be improved. The number of the reinforcing protrusions 10 is not particularly limited, and may be 3 or less or 5 or more. The cross-sectional shape and position of the reinforcing protrusion 10 can also be changed as necessary.

As shown in FIGS. 14 to 16, at both end portions in the length direction of the pipe 21 joined to the upper and lower members 3 or the side members 4 provided with the projecting portions 7, the insertion holes 22 and, for example, four through holes are respectively provided. 23 are provided. A connecting portion 24 is provided below the insertion hole 22, and a hollow portion 25 is provided below the connecting portion 24. A female screw hole 26 is provided at the bottom of the insertion hole 22.

The connecting portion 24 may be formed to extend in the length direction of the pipe 21 without providing the hollow portion 25 below the connecting portion 24. The cross-sectional shape of the insertion hole 22 may be formed according to the cross-sectional shape of the protruding portion 7 of the upper and lower members 3 or the side members 4. The cross-sectional shape of the through hole 23 may be formed according to the cross-sectional shape of the reinforcing protrusion 10 of the upper and lower members 3 or the side members 4. The number of the through holes 23 is not particularly limited, and may be 3 or less or 5 or more in accordance with the number of the reinforcing protrusions 10. The cross-sectional shape and material of the pipe 21, the cross-sectional shape of the insertion hole 22, and the cross-sectional shape of the through hole 23 are not particularly limited, and various conventionally known configurations can be adopted.

To join the pipe 21 to the upper/lower member 3 or the side member 4 provided with the protruding portion 7, the protruding portion 7 of the upper/lower member 3 or the side member 4 is inserted into the insertion hole 22 of the pipe 21, and the upper/lower member 3 or the side member 4 is inserted. The reinforcing protrusion 10 of the member 4 is inserted into the through hole 23 of the pipe, the bolt 27 is inserted into the bolt hole 9 of the upper/lower member 3 or the side member 4, and the head 27a of the bolt 27 is inserted into the upper/lower member 3 or the side member 4. It is sufficient that the male screw portion 27b of the bolt 27 is screwed into the female screw hole 26 of the pipe 21 while being inserted into the bolt head hole 8 of FIG. A hexagonal hole (not shown) is provided on the upper surface of the head 27a of the bolt 27. As described above, if at least one reinforcing protrusion 10 is provided on the outer surface side of the upper and lower members 3 or the side members 4 provided with the protrusions 7, there is an advantage that the pipe 21 can be joined more firmly.

When assembling the pipe joint 1, as shown in FIGS. 5, 6, 12, and 13, the intermediate portion 4c of the side member 4 is inserted into the cutout portion 6 of the upper and lower members 3, and the head of the side member 4 is inserted. The portion 4b is inserted into the insertion groove 5 of the upper and lower member 3, the base portion 4a of the side member 4 is pressed against the base portion 3a of the upper and lower member 3, and the base portions 4a of the side member 4 and the head portions 4b are pressed to each other. The hexahedron 2 may be formed by detachably sandwiching the four side members 4 between the upper and lower members 3.

12 and 13, the pipe 21 is not shown, but before the assembly of the pipe joint 1 is completed, the pipe 21 is joined to the upper and lower members 3 or the side members 4 provided with the protrusions 7. Just keep it. In any case, if at least one of the two upper and lower members 3 and the four side members 4 is attached to the upper and lower members 3 or the side members 4 provided with the protrusions 7 at appropriate positions, the pipe joint 1 On the other hand, the pipe 21 can be joined upward, downward, or laterally in one to six directions. By joining the pipes 21 in the proper direction with the pipe joint 1, it is possible to assemble the rack 28, shelf, etc. as shown in FIG.

Here, as shown in FIG. 2 to FIG. 6, FIG. 12, and FIG. 13, a locking claw 31 is provided so as to project from the bottom of the notch 6 of the upper and lower members 3, and the upper end of the intermediate portion 4 c of the side member 4 and If the locking claws 32 are provided so as to project from the lower end portions and the locking claws 32 of the side member 4 are removably locked to the locking claws 31 of the upper and lower members 3, the upper and lower members 3 and There is an advantage that the members 4 can be prevented from falling off each other.

Further, as shown in FIGS. 3 to 5, if the intermediate portion 4c of the side member 4 is formed in a cross shape in a front view, even if the side member 4 is rotated by 90 degrees, the middle portion of the side member 4 is formed. Since the portion 4c can be inserted into the notch 6 of the upper and lower members 3, there is an advantage that no particular attention needs to be paid to the mounting direction of the side member 4. If the locking claws 32 are provided so as to project from the left end and the right end of the intermediate portion 4c of the side member 4, the locking claws 32 of the side member 4 can be moved up and down even when the side member 4 is rotated 90 degrees. There is an advantage that it can be detachably locked to the locking claw 31 of the member 3.

Further, as shown in FIGS. 1 and 2, if a nut hole 33 is provided on the inner surface side of the upper and lower members 3 where the protruding portion 7 is not provided, a nut for fixing the extension part is accommodated in the nut hole 33. Therefore, there is an advantage that the extension parts can be easily attached to the upper and lower members 3 which are not provided with the protruding portions 7. Further, as shown in FIGS. 7 to 9, if a nut hole 33 is provided on the inner surface side of the upper and lower members 3 provided with the projecting portion 7 and the bolt head hole 8 is provided at the bottom of the nut hole 33, expansion is achieved. Since the nut for fixing the parts can be housed in the nut hole 33, there is an advantage that the extension parts can be easily attached to the upper and lower members 3 provided with the protrusions 7. Note that examples of the above-mentioned extended parts include casters and ceiling hangings.

According to the pipe joint 1 configured as described above, the bolt 27 that joins the upper and lower members 3 or the side member 4 provided with the protruding portion 7 and the pipe 21 is not exposed, so that there is an advantage that it looks good. Further, since the upper and lower members 3 or the side member 4 and the pipe 21 can be joined with the bolts 27 in a state where the projecting portion 7 of the upper and lower member 3 or the side member 4 is inserted into the insertion hole 22 of the pipe 21, the pipe 21 is firmly fixed. There is an advantage that you can. Further, when the pipe 21 is not joined, it is sufficient to attach the upper and lower members 3 or the side members 4 which are not provided with the projecting portions 7, so that there is an advantage that dust (dust) is hard to collect.

INDUSTRIAL APPLICABILITY As described above, the pipe joint of the present invention is useful as a pipe joining means for improving the appearance, firmly fixing the pipe, and preventing dust (dust) from accumulating when the pipe is not joined.

DESCRIPTION OF SYMBOLS 1 Pipe joint 2 Hexahedron 3 Upper/lower member 3a Base part 3b Main body part 4 Side member 4a Base part 4b Head part 4c Intermediate part 5 Insertion groove 6 Notch part 7 Projection part 8 Bolt head hole 9 Bolt hole 10 Reinforcing projection part 11 Rib 31 engagement Stop claw 32 Locking claw 33 Nut hole

Claims (8)

Two upper and lower members respectively constituting the upper surface and the lower surface of the hexahedron;
Four side members respectively constituting the four side surfaces of the hexahedron,
The base of the upper and lower members is formed into a truncated pyramid shape,
The main body of the upper and lower members is formed in a rectangular plate shape,
On the inner surface of the upper and lower members facing the inner space of the hexahedron, an insertion groove having a quadrangular shape in a plan view extending in the circumferential direction is provided,
Four notches are provided on the outer side of the insertion groove of the upper and lower members at intervals in the circumferential direction,
The side member is formed into a truncated pyramid shape,
An intermediate portion is formed between the base and the head of the truncated pyramid of the side member,
The projecting portion is provided on the outer surface facing the outside of the hexahedron in at least one of said upper and lower members and said side members,
The bolt head hole provided in the inner surface of the upper and lower members or side member said projecting portion is provided,
At the bottom of the bolt head hole, a bolt hole is provided so as to penetrate from the bolt head hole toward the tip of the protrusion,
Insert the middle portion of the side member into the notch of the upper and lower members,
Insert the head of the side member into the insertion groove of the upper and lower members,
Pressing the base of the side member to the base of the upper and lower members,
The base parts of the side members and the head parts are pressed together,
The pipe joint characterized in that the hexahedron is formed by detachably sandwiching the four side members between the two upper and lower members. Providing a locking claw on the bottom of the notch of the upper and lower members,
Locking claws are provided on the upper end and the lower end of the middle part of the side member,
The pipe joint according to claim 1, wherein the engaging claws of the side members are detachably engaged with the engaging claws of the upper and lower members. The pipe joint according to claim 1, wherein the intermediate portion of the side member has a cross-shaped front view shape. Forming a cross shape in a front view of the intermediate portion of the side member,
The pipe joint according to claim 2, wherein locking claws are provided so as to project from a left end portion and a right end portion of an intermediate portion of the side member. The pipe joint according to claim 1, wherein at least one reinforcing protrusion is provided on the outer surface side of the upper or lower member or the side member provided with the protrusion. The pipe joint according to claim 5, wherein a rib extending in the length direction is provided on the outer peripheral surface of the reinforcing protrusion. 7. The pipe joint according to claim 1, wherein a nut hole is provided on the inner surface side of the upper and lower members that are not provided with the projecting portion. The nut holes provided in the inner surface of the vertical member to which the protruding portion is provided,
The pipe joint according to claim 1, wherein the bolt head hole is provided at the bottom of the nut hole.

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