JP7390722B2 - Flange members and pipes with flanges - Google Patents

Description

The present invention relates to a collar member that protects a hand holding a pipe material, and a flanged pipe in which the collar member is fitted to the pipe material.

The pipe material is removably attached to moving vehicles, trolleys, etc. and used as a handle.
The cart described in Patent Document 1 has two approximately C-shaped cross-sectional members having continuous slit-shaped openings in the longitudinal direction of the lower surface arranged in parallel in the front-rear direction inside the rectangular outer frame, and the rectangular outer frame The cargo platform has a pipe material with multiple horizontal through-holes formed in the vertical direction at the rear end, and is attached to the slit-shaped openings of two approximately C-shaped cross sections with bolts and nuts so that the front and back positions can be changed. It consists of a wheel attachment part and a handle part that is inserted into the pipe material and whose height can be adjusted in multiple stages (summary).

The handle portion of this trolley is formed of a pipe material, and a grip member that can be held by hand is fitted to the end of the handle portion. The grip member has a raised protrusion on the hand side and has an annular stop portion integrally molded therein.

Japanese Patent Application Publication No. 11-129908

In the above-mentioned conventional technology, since the entire inner peripheral surface of the grip member is fitted to the pipe material, it is troublesome to fit and remove the grip member. They are difficult to use and are left on at all times.
In addition, in the grip member of the handle part of the prior art, when grasping the grip member of the handle part, the annular stop part on the hand side can prevent the hand from shifting forward, but since the annular stop part is a small protuberance, It has become difficult to prevent your hands from coming into contact with objects or getting caught when you are about to come into contact with the wall of a structure, or when an obstacle falls onto the handle. , its role as a hand guard is low.

An object of the present invention is to provide a flanged member and a flanged pipe that can solve the problems of the prior art.
SUMMARY OF THE INVENTION An object of the present invention is to provide a flange member that can be easily fitted into and removed from a pipe material, and which becomes a hand guard by fitting into the pipe material.
SUMMARY OF THE INVENTION An object of the present invention is to provide a flanged pipe in which a flanged member serving as a hand guard can be easily fitted into and removed from a pipe material.

Specific means for solving the problems in the present invention are as follows.
In the collar member of the present invention, an inner peripheral part that fits into a pipe material, an outer peripheral part that surrounds the outside of this inner peripheral part, and a bridge part that connects the inner peripheral part and the outer peripheral part are integrally molded from an elastic material. The inner circumference is formed with a fitting hole having a diameter larger than the outer diameter of the pipe material, and a pressure contact part that protrudes radially inward from the fitting hole and is pressed against the outer circumferential surface of the pipe material. It is characterized by

In the flanged pipe of the present invention, the pipe material is provided with a pair of protrusions on the outer circumferential surface at an interval wider than the width of the collar member, and the collar member has a fitting hole with a diameter larger than the outer diameter of the pipe material, and a pair of protrusions formed on the outer peripheral surface of the pipe material. It is characterized by being formed with a press-contact portion that protrudes radially inward from the mating hole and is pressed against the outer circumferential surface of the pipe material, and a groove that is open toward the mating hole.

According to the flange member of the present invention, it can be easily fitted into and removed from a pipe material, can be fitted into a pipe material to serve as a hand guard, and can be detached from the pipe material when the pipe material is not in use. .
According to the flanged pipe of the present invention, the flanged member serving as a hand guard can be easily fitted into the pipe material.
You can leave.

It is a front view of a collar member showing an embodiment of the present invention. It is a perspective view of a collar member. It is a right view or a left side view of a collar member. It is a top view or a bottom view of a collar member. It is a perspective view of the collar member fitted to the pipe material. 1 is a sectional view of a flanged pipe showing an embodiment of the present invention. FIG. 2 is a side view of a 4-wheeled truck using a flanged pipe. It is a front view which shows the 1st modification of a collar member. It is a front view which shows the 2nd modification of a collar member.

Embodiments of the present invention will be described below based on the drawings.
6 and 7 illustrate a flanged pipe C whose lower part is inserted into a holder 16 at a corner of a four-wheeled truck 15 and used as a handle (push bar).
The flanged pipe C includes a pipe material B bent in an L-shape and having a circular cross section, and a collar member A fitted into the pipe material B. The pipe material B may have a straight shape.

The upper end of the pipe material B is a part that is held by hand, and a pair of protrusions 11 are provided on the outer peripheral surface of the front side of the gripping part at an interval wider than the width of the collar member A. In addition to the fitting hole 7, a groove 9 for passing the protrusion 11 is formed.
When fitting the flange member A to the pipe material B, the protrusion 11 on the end side of the pipe material B is passed through the groove 9 facing each other, and the flange member A is made to fit between the pair of protrusions 11. By rotating A around pipe material B, the pair of protrusions 11 act as obstacles, restricting the movement of collar member A in the axial direction of pipe material B, and setting the position of collar member A on pipe material B. .

When the four-wheeled trolley 15 is not used, the flanged pipe C is pulled out from the holder 16, the flanged member A is removed from the pipe material B, the flanged member A collects only the flanged member A, and the pipe material B collects only the pipe material B. Save and store all together.
In FIGS. 1 to 7, a flange member A that is fitted onto a pipe material B has an inner circumferential portion 3 that fits into the pipe material B, an outer circumferential portion 4 that surrounds the outside of this inner circumferential portion 3, and an inner circumferential portion 3. A bridge portion 5 connecting the outer peripheral portion 4 and the outer peripheral portion 4 are integrally molded from an elastic material such as synthetic resin or rubber.

The inner circumferential portion 3 is approximately circular, and has a fitting hole 7 therein which has a diameter larger than the outer diameter of the pipe material B, and a fitting hole 7 that protrudes radially inward from the fitting hole 7 and is connected to the outer circumferential surface of the pipe material B. A pair of press-contact parts 8 that are press-contacted with each other and a groove 9 that is open toward the fitting hole 7 are formed.
A pair of pressure contact parts 8 are provided at positions displaced by 180 degrees in the fitting hole 7, and opposing surfaces of the pair of pressure contact parts 8 are formed flat, and the distance between the two surfaces is smaller than the outer diameter of the pipe material B. It has become.

Since the fitting hole 7 has a larger diameter than the outer diameter of the pipe material B, it is fitted to the pipe material B with a gap in between, but the distance between the two faces of the pressure welding part 8 is smaller than the outer diameter of the pipe material B. Therefore, it is elastically deformed by the inserted pipe material B, and is brought into pressure contact with the outer peripheral surface of the pipe material B by the elastic restoring force.
The groove 9 has a rectangular cross section, a key groove shape on the hole side, and a cross section larger in width and height than the protrusion 11, and serves as an insertion groove for passing the protrusion 11. By opening the groove 9 toward the fitting hole 7, the inside of the groove communicates with the inside of the fitting hole 7.

This groove 9 is located at an intermediate position between the pair of press-contact parts 8, that is, the distances from the groove 9 to the two press-contact parts 8 are approximately equal, and when the pair of press-contact parts 8 are pushed apart by the inserted pipe material B, It plays a role in supporting its elastic deformation.
The protrusion 11 of the pipe material B is formed by caulking and fixing the collar with a blind rivet. The protrusion 11 may be formed by screwing a bolt, screw pin, screw, etc. onto the pipe material B, and the cross-sectional shape of the groove 9 is also set according to its width and height so that it can pass therethrough.

The outer peripheral portion 4 is formed into an octagonal shape when viewed in the axial direction of the fitting hole 7. Although the outer peripheral part 4 can be formed into a circular shape, it is better to form it into a polygonal shape such as a quadrangle, a pentagon, a hexagon, an octagon, etc. to prevent the collar member A from falling when storing or storing it. Therefore, it is preferable.
It is also possible for the flange member A to form the inner peripheral part 3, the outer peripheral part 4, and the bridging part 5 by a single plate, but the bridging part 5 extends in the radial direction from the outer periphery of the inner peripheral part 3. A plurality of bridging walls 5a in the circumferential direction connecting the inner peripheral part 3 and the outer peripheral part 4 and a space 5b between the plurality of bridging walls 5a are formed.

When the outer circumferential portion 4 is polygonal, the circumferentially plural bridging walls 5a connect the corner portions 4a and flat portions 4b of the outer circumferential portion 4 to the outer circumferential surface of the inner circumferential portion 3. The bridging wall 5a may be connected only to the corner portion 4a or only to the flat portion 4b of the outer circumferential portion 4, and the number, thickness, etc. of the bridging wall 5a may be determined in consideration of the expected magnitude of impact on the outer circumferential portion 4, durability, etc. Set.
The bridging portion 5 has a plurality of bridging walls 5a in the circumferential direction, so that the impact and load applied to the outer peripheral portion 4 can be buffered, dispersed, and deflected.

FIG. 8 shows a first modification of the flange member A, in which a groove 9 is formed in the inner peripheral part 3 to have a substantially trapezoidal cross section that widens toward the fitting hole 7. A pressure contact portion 8 is provided at one location displaced by 90 degrees from the groove 9.
The pressure contact portion 8 may be located at a position facing the groove 9 (a position displaced by 180 degrees from the groove 9), and the amount of protrusion from the fitting hole 7 is larger than that of the previous embodiment.

FIG. 9 shows a second modified example of the flange member A, in which a groove that is released toward the fitting hole 7 is not formed in the inner peripheral portion 3, and the fitting hole 7 is displaced by 90 degrees. Pressure contact portions 8 are provided at four locations. The inner circumferential portion 3 may be formed with a groove that is opened toward the fitting hole 7 and has a small cross-sectional shape (a size that does not allow the protrusion 11 to pass through) to facilitate elastic deformation of the pressure contact portion 8.
Therefore, the collar member A of the second modification can be fitted to the pipe material B that does not have the protrusion 11, and the collar member A can be fitted to the existing pipe material B, and the collar member A can be fitted with the pressure contact force of only the collar member A. It will be attached to member A.

The collar member shown in the embodiment and the first and second modifications has an inner circumferential portion 3 that fits into the pipe material B, and an outer side of the inner circumferential portion 3 in the collar member that is fitted to the pipe material B. A surrounding outer circumferential portion 4 and a bridging portion 5 connecting the inner circumferential portion 3 and the outer circumferential portion 4 are integrally molded with an elastic material, and the inner circumferential portion 3 has a diameter larger than the outer diameter of the pipe material B. Since a fitting hole 7 and a pressure contact portion 8 that protrudes radially inward from the fitting hole 7 and is pressed against the outer circumferential surface of the pipe material B are formed, it can be easily fitted to and removed from the pipe material B. It can be fitted into pipe material B to form a hand guard.

In addition, since a pair of pressure contact portions 8 of the flange member are provided at positions displaced by 180 degrees in the fitting hole 7, the pressure contact portions 8 of the flange member can be fitted with well-balanced pressure contact with the pipe material B, and can be prevented from coming off from the pipe material B. can be done with certainty.
Furthermore, since a groove 9 that is open toward the fitting hole 7 is formed in the inner peripheral part 3 of the collar member, the pressure welding part 8 can be easily deformed, and a protrusion 11 can be formed on the outer peripheral surface of the pipe material B. If provided, the collar member can be fitted to the pipe material B up to the position where it passes through the projection 11.

Furthermore, the bridging portion 5 of the collar member includes a plurality of circumferential bridging walls 5a extending radially from the outer periphery of the inner circumferential portion 3 and connecting the inner circumferential portion 3 and the outer circumferential portion 4, and a plurality of bridging walls 5a in the circumferential direction. Since the space 5b is formed between the walls 5a, even if force is applied from the outside, it can be efficiently released, and even if it is formed large, the material and weight can be reduced.
Since the outer peripheral part 4 of the collar member is formed into a polygonal shape when viewed in the axial direction of the fitting hole 7, rotation can be prevented by grounding the flat part 4b of the outer peripheral part 4.

The flanged pipe shown in the embodiment is a flanged pipe having a pipe material B and a flanged member A fitted to the pipe material B, and the flanged member A has a diameter larger than the outer diameter of the pipe material B. A fitting hole 7, a pressure contact part 8 which protrudes radially inward from the fitting hole 7 and is pressed against the outer peripheral surface of the pipe material B, and a groove 9 which is open toward the fitting hole 7 are formed. Therefore, the flange member A serving as a hand guard can be easily fitted into and removed from the pipe material B.

Further, the flange member A of the flange pipe has an inner peripheral part 3 in which a fitting hole 7 is formed, and a polygonal outer peripheral part 4.
and a bridging portion 5 in which the corner portion 4a and/or flat portion 4b of the outer circumferential portion 4 and the outer circumferential surface of the inner circumferential portion 3 are connected by a plurality of bridging walls 5a in the circumferential direction, are integrally molded from an elastic material, Since the pressure contact portions 8 are provided as a pair at positions displaced by 180 degrees from the fitting hole 7 of the inner peripheral portion 3 and approximately equidistant from the groove 9, even if force is applied from the outside, it can be efficiently released. Even if it is formed large, the material and weight can be reduced, and the flange member A can be fitted to the pipe material B in a well-balanced manner and reliably.

Furthermore, the pipe material B of the flanged pipe is provided with a pair of protrusions 11 on the outer peripheral surface at an interval wider than the width of the flanged member A, and the groove 9 is formed in a shape that allows the protrusions 11 to be inserted. , the collar member A can be fitted into the pipe material B having the protrusion 11 for positioning.
Since the flange member A is not fixed to the pipe material B using a fastener such as a screw, the flange member A cannot be easily removed from the pipe material B when the flanged pipe is not used. Therefore, distribution, preservation, storage, etc. can be performed using only the collar member A.

Note that the present invention is not limited to the above-described embodiments and modified examples, and the shapes, configurations, combinations, etc. of members can be changed.
For example, even if the collar member A of the embodiment and the first modification has the groove 9 formed in the fitting hole 7, it can be fitted and attached to an existing pipe material B that does not have the protrusion 11, and functions as a hand cover. can be done.

The groove 9 is a straight groove along the axial direction of the fitting hole 7, but it may also be a spiral groove, and a plurality of small grooves may be formed to facilitate deformation of the pressure contact portion 8, or a protrusion 11 may be formed. It may also be provided along with an insertion groove for insertion.

A Flange member B Pipe material C Flammed pipe 3 Inner peripheral part 4 Outer peripheral part 4b Flat part 5 Bridge part 5a Bridge wall 5b Space part 7 Fitting hole 8 Pressure weld part 9 Groove 11 Projection 15 Four-wheeled truck 16 Holder

Claims (8)

In the collar member fitted to the pipe material (B),
Connecting the inner circumferential part (3) that fits into the pipe material (B), the outer circumferential part (4) surrounding the outside of this inner circumferential part (3), and the inner circumferential part (3) and the outer circumferential part (4) The bridge portion (5) is integrally molded with an elastic material, and
The inner peripheral portion (3) has a fitting hole (7) having a diameter larger than the outer diameter of the pipe material (B), and a fitting hole (7) that protrudes radially inward from the fitting hole (7). A flange member characterized in that a flange member is formed with a press-contact portion (8) that is press-contacted to the outer circumferential surface of the flange member. The collar member according to claim 1, characterized in that a pair of said press-contact parts (8) are provided at positions displaced by 180 degrees in the fitting hole (7). The collar member according to claim 1 or 2, characterized in that the inner peripheral portion (3) is formed with a groove (9) that is open toward the fitting hole (7). The bridging portion (5) includes a plurality of circumferential bridging walls (5a) extending radially from the outer circumference of the inner circumferential portion (3) and connecting the inner circumferential portion (3) and the outer circumferential portion (4). The collar member according to any one of claims 1 to 3, wherein a space (5b) between a plurality of bridging walls (5a) is formed. The flange member according to any one of claims 1 to 4, wherein the outer peripheral portion (4) is formed into a polygonal shape when viewed in the axial direction of the fitting hole (7). A flanged pipe having a pipe material (B) and a collar member (A) fitted to the pipe material (B),
The flange member (A) has a fitting hole (7) having a diameter larger than the outer diameter of the pipe material (B), and a fitting hole (7) that protrudes radially inward from the fitting hole (7) and has a hole in the pipe material (B). A flanged pipe characterized in that a pressure contact part (8) that is pressed against the outer peripheral surface and a groove (9) that is open toward the fitting hole (7) are formed. The flange member (A) includes an inner peripheral part (3) in which a fitting hole (7) is formed, a polygonal outer peripheral part (4), and a corner part (4a) and/or a flat part of the outer peripheral part (4). A bridging portion (5) connecting the portion (4b) and the outer peripheral surface of the inner circumferential portion (3) with a plurality of bridging walls (5a) in the circumferential direction is integrally molded with an elastic material,
A pair of pressure contact parts (8) are provided at positions 180 degrees displaced from the fitting hole (7) of the inner peripheral part (3) and approximately equidistant from the groove (9). The flanged pipe according to item 6. The pipe material (B) is provided with a pair of protrusions (11) on its outer peripheral surface at an interval wider than the width of the collar member (A),
The flanged pipe according to claim 6 or 7, wherein the groove (9) is formed in a shape that allows the protrusion (11) to be inserted therethrough.

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