JP2008037551A - Pipe structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pipe structure capable of moving up and down a shelf board as a structural element of the pipe structure or changing a sleeve top plate as an accessory of the pipe structure from a horizontal attitude into a vertical attitude. <P>SOLUTION: An expansion mechanism part 4 is constituted by a vertical pipe 2 as a supporting column and a rack pipe 3 which is movably inserted into a lock mechanism cylinder body 5 mounted on the upper-end outer periphery of the vertical pipe 2. The pipe structure 1a is constructed by connecting a lateral beam pipe 9 to the vertical pipe 2 and the rack pipe 3. The lock mechanism cylinder body 5 has a lock mechanism part 6 which engages with rack teeth 3a of the rack pipe 3 to fix the position of the rack pipe 3 or which disengages therefrom to make the rack pipe 3 movable. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention belongs to the technical field of pipe structures used as storage shelves, work carts, etc., and more specifically, shelves that are components of pipe structures are moved up and down or attached to pipe structures. The present invention relates to a pipe structure that can change a sleeve top plate that is an object from a horizontal posture to a vertical posture.

As an example of a conventional pipe structure, for example, in the pipe structure disclosed in Patent Document 1 below, rack teeth are formed along the axial direction on the side surface of a vertical pipe as a support column. It is described that the cross beam pipe is connected using a socket held by a cylindrical body that can be attached or detached.
Further, the vertical pipe has a rack tooth having a band shape with a constant width in the longitudinal direction of the outer peripheral surface of the synthetic resin-coated metal tube formed by coating and bonding the synthetic resin in a thin and uniform layer on the outer peripheral surface of the thin metal tube, It is described that the resin coating layer is continuously formed in at least one row of strips by a molding device of a production line at a time when it is still in a soft state immediately after coating and bonding the synthetic resin. That is, it can be provided to the market at a very low price, and there is no concern about rusting. Moreover, the beautiful appearance of the synthetic resin on the surface makes it possible to construct a pipe structure that is excellent in design and aesthetics and that is lightweight.

No. 6-30740

Since the pipe structure disclosed in Patent Document 1 can freely change the position of the cylinder attached to the vertical pipe, the height of the transverse beam pipe inserted into the socket held by the cylinder is adjusted. The shelf can be moved up and down easily and freely.
However, every time the shelf or the like is moved up and down, it is necessary to remove the attached cylinder, so that workability is poor and usability is poor.
In addition, the rack teeth formed on the outer peripheral surface of the synthetic resin coated on the outer peripheral surface of the thin metal tube in a thin and uniform layer cannot be deeply carved from the thin thickness of the rack teeth. It is hard to say that the body is hard to bite, and that it is therefore possible to construct a solid and stable pipe structure.

  An object of the present invention is to form an expansion / contraction mechanism part by a vertical pipe and a rack pipe movably inserted into a lock mechanism cylinder attached to the outer periphery of the end of the vertical pipe, or the rack pipe and the lock mechanism cylinder Configure the slide mechanism with the body to move the shelf board, which is a component of the pipe structure, up and down, or change the sleeve top board, which is an accessory of the pipe structure, from the horizontal position to the vertical position It is to provide a pipe structure that can be easily achieved.

  The next object of the present invention is that there is no need for a surface treatment for rust prevention, it is excellent in design aesthetics, and it is light in weight, as well as deeply carving the unevenness of the rack teeth formed in the rack pipe, It is to provide a pipe structure which can be fixedly positioned by being firmly engaged with a lock mechanism portion of a lock mechanism cylinder and has a stable structure.

As a means for solving the problems of the prior art described above, the pipe structure according to the invention described in claim 1 is:
The vertical pipe 2 as a support and the rack pipe 3 movably inserted into the lock mechanism cylinder 5 attached to the outer periphery of the upper end of the vertical pipe 2 constitutes an expansion / contraction mechanism section 4. And the pipe structure 1a is comprised by connecting the cross beam pipe 9 to the rack pipe 3,
The lock mechanism cylinder 5 is provided with a lock mechanism portion 6 that engages with the rack teeth 3a of the rack pipe 3 to fix the position of the rack pipe 3 or releases the engagement so that the rack pipe 3 can move. It is characterized by.

The pipe structure according to the invention described in claim 2 is:
The expansion / contraction mechanism 4 of the column is configured by the rack pipe 3 as a column and the lock mechanism cylinder 5 attached to the outer periphery of the lower end of the vertical pipe 2 that is movably fitted to the rack pipe 3. A pipe structure 1b is configured by connecting a horizontal beam pipe 9 to the rack pipe 3;
The lock mechanism cylinder 5 is provided with a lock mechanism portion 6 that engages with the rack teeth 3a of the rack pipe 3 to fix the position of the vertical pipe 2 or releases the engagement and enables the vertical pipe 2 to move. It is characterized by.

The pipe structure according to the invention described in claim 3 is:
At least one lock mechanism cylinder 5 is movably attached to the rack pipe 3 as a support to constitute a slide mechanism 17, and the upper and lower ends of the support rack pipe 3 and the attached joint 19 of the lock mechanism cylinder 5 are cross-beamed. A pipe structure 1c is configured by connecting the pipes 9;
The lock mechanism cylinder 5 is engaged with the rack teeth 3a of the rack pipe 3 to fix the position of the lock mechanism cylinder 5, or the lock mechanism cylinder 5 can be moved by releasing the engagement. 6 is provided.

The pipe structure according to the invention described in claim 4 is:
The horizontal beam pipe 9 of the pipe structure 1d and the outer peripheral pipe 13a of the sleeve top plate 13 are connected by a rotary joint 18, and the sleeve top plate 13 is installed to be freely raised and lowered.
In the pipe structure 1 d, the base end of the vertical pipe 14 as a support is connected to the lower support pipe 12 parallel to the horizontal beam pipe 9, and moves into the lock mechanism cylinder 5 attached to the other end of the vertical pipe 14. The expansion and contraction mechanism 4 of the cheek cane is constituted by the rack pipe 3 inserted in such a manner that the other end of the rack pipe 3 is connected to the support pipe 16 parallel to the outer peripheral pipe 13a of the sleeve top plate 13 and the sleeve top. A pipe structure 1d having a cheek cane supporting the plate 13 is configured,
The sleeve top plate 13 is engaged with the lock mechanism cylinder 5 by engaging with the rack teeth 3a of the rack pipe 3 to fix the position of the rack pipe 3, or releasing the engagement to allow the rack pipe 3 to move. It is characterized in that a lock mechanism portion 6 is provided which can be rotated.

Invention of Claim 5 is the pipe structure as described in any one of Claims 1-4,
The lock mechanism portion 6 is engaged with the rack teeth 3a of the rack pipe 3, locks the position of the rack pipe 3, and interlocks with the lock tooth member 6a to release the engagement of the lock tooth member 6a. A lever 6c that allows the rack pipe 3 to move;
The lock tooth member 6a and the lever 6c are respectively attached to the lock mechanism cylinder 5 so as to be rotatable.

The invention described in claim 6 is the pipe structure according to claims 1 to 4,
The lock mechanism 7 (or 8) is engaged with the rack tooth 3a of the rack pipe 3, and the lock tooth member 7a (or 8a) for fixing the position of the rack pipe 3 is engaged with the lock tooth member 7a (or 8a). And a lever 7c (or 8c) that enables the rack pipe 3 to move.
The lock tooth member 7a (or 8a) is rotatably attached to the lock mechanism cylinder 5 via a spring material 7b (or 8b).

The invention described in claim 7 is the pipe structure according to any one of claims 1 to 6,
The rack pipe 3 crushes a part of the outer periphery and adhesively coats the resin on the outer peripheral surface of the steel pipe formed with the flat portion 3b in the axial direction, and coats the flat portion 3b with a resin in a thick layer. It is characterized in that the rack teeth 3a are formed by rolling the rack tooth forming roller 15 in the axial direction while still in a soft state.

  The pipe structures 1a and 1b according to the inventions described in claims 1, 2, 5 and 6 can be used for the rack pipe 3 or the vertical pipe 2 by operating the lock mechanism 6 of the telescopic mechanism 4 to lock or release. Since the position can be fixed or expanded (slid), the shelf plate 11 and the like supported by the vertical pipe 2 or the rack pipe 3 can be moved up and down. The position of the shelf board 11 moved to a desired height can be fixed by operating the lock mechanism section 6 of the telescopic mechanism section 4. That is, the pipe structure 1a or 1b of the present invention is very easy to operate and easy to use.

  The pipe structure 1c according to the invention described in claims 3, 5 and 6 fixes or slides the position of the lock mechanism cylinder 5 by operating the lock mechanism 6 of the slide mechanism 17 to lock or release. Therefore, the shelf board 11 supported by the lock mechanism cylinder 5 can be moved up and down. The position of the shelf board 11 moved to a desired height can be fixed by operating the slide mechanism section 17. That is, the pipe structure 1c of the present invention is very easy to operate and easy to use.

  The pipe structure 1d according to the invention described in claims 4, 5 and 6 fixes the position of the rack pipe 3 or expands / contracts (slides) by operating the lock mechanism 6 of the expansion / contraction mechanism 4 to lock or release. Therefore, the sleeve top plate 13 connected by the horizontal beam pipe 9 of the pipe structure 1d and the rotary joint 18 can be rotated up and down freely to return from the horizontal posture to the vertical posture. The sleeve top plate 13 rotated in the above-described posture can be fixed in position by operating the lock mechanism unit 6 of the telescopic mechanism unit 4. That is, the pipe structure 1d of the present invention is very easy to operate and easy to use.

  In the pipe structure according to the invention described in claim 7, since the resin is adhesively coated on the outer peripheral surface of the rack pipe 3, there is no need for a surface treatment for rust prevention, and the surface of the synthetic resin has a beautiful appearance. Excellent design aesthetics and light weight. In addition, since the resin coated in a thick layer on a part of the outer periphery of the rack pipe 3 is formed on the rack teeth 3a, the rack teeth 3a can be formed on the deeply carved rack teeth 3a and the locking mechanism portion 6 can be easily bitten. it can.

  The pipe structure 1a of the present invention includes a vertical pipe 2 as a support and a rack pipe 3 that is movably inserted into a lock mechanism cylinder 5 attached to the outer periphery of the upper end of the vertical pipe 2. 4 and a horizontal beam pipe 9 is connected to the vertical pipe 2 and the rack pipe 3. The lock mechanism cylinder 5 is provided with a lock mechanism portion 6 that engages with the rack teeth 3a of the rack pipe 3 to fix the position of the rack pipe 3 or releases the engagement so that the rack pipe 3 can move.

  Alternatively, at least one lock mechanism cylinder 5 is movably attached to the rack pipe 3 as a column to constitute the slide mechanism unit 17, and the upper and lower ends of the column rack pipe 3 and the attached joint 19 of the lock mechanism cylinder 5 are attached. The horizontal beam pipe 9 is connected to form a pipe structure 1c. A lock mechanism section 6 that engages the rack teeth 3a of the rack pipe 3 to fix the position of the lock mechanism cylinder 5 to the lock mechanism cylinder 5 or releases the biting and enables the lock mechanism cylinder 5 to move. Is provided.

  Moreover, the pipe structure 1d of the present invention is implemented by connecting the cross beam pipe 9 of the pipe structure 1d and the outer peripheral pipe 13a of the sleeve top plate 13 by a rotary joint 18 and installing the sleeve top plate 13 so that it can be raised and lowered. You can also. In the pipe structure 1d, the base end of the vertical pipe 14 as a support column is connected to the lower support pipe 12 parallel to the horizontal beam pipe 9, and moved into the lock mechanism cylinder 5 attached to the other end of the vertical pipe 14. The rack pipe 3 that can be inserted constitutes the expansion / contraction mechanism part 4 of the cheek cane, and the other end of the rack pipe 3 is connected to the support pipe 16 parallel to the outer peripheral pipe 13a of the sleeve top plate 13 to connect the sleeve top plate. A pipe structure 1 d having a cheek cane supporting 13 is configured. The sleeve top plate 13 is attached to the lock mechanism cylinder 5 by engaging the rack teeth 3a of the rack pipe 3 to fix the position of the rack pipe 3 or releasing the engagement to allow the rack pipe 3 to move. A lock mechanism 6 that can be rotated is provided.

Hereinafter, the present invention will be described based on the embodiments shown in FIGS.
FIGS. 1 and 2 illustrate a typical example of a pipe structure according to the first aspect of the present invention, in which a work base plate 11 is installed on the upper surface of the pipe structure 1a so that the height position can be freely adjusted. Each trolley is shown. The pipe structure 1a is composed of a vertical pipe 2 as a support and a rack pipe 3 movably inserted into a lock mechanism cylinder 5 attached to the outer periphery of the upper end of the vertical pipe 2 so as to extend and contract. The cross beam pipes 9 are connected to the joint 10 attached to the vertical pipe 2 and the rack pipe 3.

As shown in FIGS. 3 (A) and 3 (B), the rack pipe 3 is a flat portion in the axial direction by crushing a part of the circumference of a steel pipe (diameter: about 28 mm) having a circular cross section (about 4 mm). A synthetic resin 3d is adhesively coated on the outer peripheral surface of the steel pipe 3b on which 3c is formed (see FIG. 3A), and the flat portion 3c of the steel pipe 3b is coated with a thick layer of the resin 3d. In this configuration, the rack teeth forming roller 15 is rolled in the axial direction while still in a soft state, and the rack teeth 3a having a shape in which one end side of the teeth rises almost vertically and gently falls toward the other end side are formed (FIG. See 3B). Therefore, the rack pipe 3 coated with the synthetic resin has no fear of rusting, and has an excellent design aesthetics due to the beautiful appearance of the synthetic resin on the surface, and is lightweight. In addition, since the resin coated in a thick layer on a part of the outer periphery of the rack pipe 3 is formed on the rack teeth 3a, teeth that are deeply carved can be formed, and the rack teeth 3a that can be easily bitten by the lock mechanism portion 6 can be formed.
In addition, although the plane part 3c of the rack pipe 3 shown to FIG. 3 (A) has shown the state formed in the loose U shape or V shape, it is not this limitation. The rack pipe 3 is not limited to a steel pipe having a circular cross-sectional shape, and can be implemented in the same manner, for example, with a triangular or square steel pipe.
Incidentally, the synthetic resin is adhesively coated on the outer peripheral surface of each of the other vertical pipes 2 for the purpose of preventing rusting and improving the design aesthetics.

  The lock mechanism cylinder 5 has an upper half protruding higher than the upper end of the vertical pipe 2, and the upper half covers a part of the rack pipe 3. Then, the position of the rack pipe 3 is fixed by being engaged with the rack teeth 3a of the rack pipe 3 in a position straddling the vertical pipe 2 and the rack pipe 3, or the rack pipe 3 can be moved by releasing the engagement. A lock mechanism 6 is provided.

4 to 6 show different specific configurations as the embodiment of the lock mechanism unit 6, respectively.
First, the lock mechanism 6 shown in FIGS. 4A to 4C is engaged with the rack teeth 3a of the rack pipe 3, and the lock tooth member 6a that fixes the position of the rack pipe 3 (see FIG. 4B); The lock tooth member 6a and the spring member 6b are interlocked to each other, and the lock tooth member 6a is released from the engagement (see FIG. 4C) to enable the rack pipe 3 to move up and down. . The lock tooth member 6a and the lever 6c are rotatably attached to the lock mechanism cylinder 5 with bolts 6d.
The lock mechanism section 6 is characterized in that the rack pipe 3 can be expanded and contracted (slid) by releasing the lock tooth member 6a engaged with the rack teeth 3a of the rack pipe 3 with a lever 6c (claim 5). invention).

Next, the lock mechanism portion 7 shown in FIGS. 5A to 5C is provided integrally with the lock tooth member 7a for fixing the position of the rack pipe 3 and the lock tooth member 7a. The lever 7c is configured to release the biting of 7a and allow the rack pipe 3 to move up and down. The lock tooth member 7a is rotatably attached to the lock mechanism cylinder 5 via a spring material 7b with a bolt 7d.
In this locking mechanism portion 7, when the rack pipe 3 is slid upward, the rack teeth 3a have a shape in which the orientation of the rack teeth 3b swells gradually from the upper end side in the horizontal direction, and the lower end side is horizontally cut. The lock tooth member 7a engaged with the rack tooth 3a easily gets over the rack tooth 3a (see FIG. 5B). However, the downward movement of the rack pipe 3 in the opposite direction is caused by the lower end side of the tooth coming into contact with the rack. Without overcoming the tooth 3a, it can bite into the next rack tooth 3a and fix the position of the rack pipe 3 (see FIG. 5C). The rack pipe 3 can be moved up and down by releasing the biting of the rack pipe 3 fixed by the lock tooth member 7a with the lever 7c.
Therefore, when the rack pipe 3 is slid upward, the lock mechanism portion 7 does not need to release the lock tooth member 7a from the engagement of the rack teeth 3a with the lever 7c, so that the operation is simple and easy to use. (Invention of claim 6).

Next, the lock mechanism portion 8 shown in FIGS. 6 (A) to 6 (C) pushes in the lock tooth member 8a for fixing the position of the rack pipe 3 and the lower end portion of the lock tooth member 8a, and the lock tooth member 8a. And a lever 8c that allows the rack pipe 3 to move up and down. The lock tooth member 8a is rotatably attached to the lock mechanism cylinder 5 with a bolt 8d via a spring member 8b. The lever 8c is rotatably attached to the lock mechanism cylinder 5 with a bolt 8d.
When the rack pipe 3 is slid upward, the lock mechanism member 8 moves over the rack teeth 3a (see FIG. 6B) to the next rack teeth 3a. The position of the bit rack pipe 3 can be fixed (see FIG. 6C). The rack pipe 3 can be moved up and down by pushing the lower end of the lock tooth member 8a with the lever 8c and releasing the lock tooth member 8a from the rack tooth 3a (see FIG. 6D).
In other words, the lock mechanism portion 8 can slide the rack pipe 3 upward without releasing the lock tooth member 8a from the engagement of the rack teeth 3a with the lever 8c, so that the operation is easy and the usability is excellent. Item 6).

  Accordingly, the pipe structure 1 a shown in FIGS. 1 and 2 operates the lock mechanism portion 6 of the telescopic mechanism portion 4 to release the lock tooth member 6 a of the lock mechanism portion 6 from the rack teeth 3 a of the rack pipe 3. Then, the rack pipe 3 can be expanded and contracted (slid), and the shelf board 11 and the like that are components of the pipe structure can be easily moved up and down. The shelf plate 11 moved to a desired height engages the lock tooth member 6a of the lock mechanism section 6 with the rack teeth 3a of the rack pipe 3 by operating the lock mechanism section 6 of the expansion / contraction mechanism section 4, and its position Can be fixed.

  In short, the pipe structure 1b shown in FIGS. 7 and 8 has a configuration in which the positions of the rack pipe 3 and the vertical pipe 2 constituting the pipe structure 1a described in the first embodiment are reversed. That is, the expansion / contraction mechanism section 4 of the column is constituted by the rack pipe 3 as a column and the lock mechanism cylinder 5 attached to the outer periphery of the lower end of the vertical pipe 2 that is movably fitted to the rack pipe 3. 2 and the joints 10 attached to the rack pipe 3 are connected to the transverse beam pipes 9 to form a pipe structure 1b.

  The lower half of the lock mechanism cylinder 5 protrudes lower than the lower end of the vertical pipe 2 and covers a part of the rack pipe 3 with the lower half. Then, the position of the rack pipe 3 is fixed by being engaged with the rack teeth 3a of the rack pipe 3 in a position straddling the vertical pipe 2 and the rack pipe 3, or the rack pipe 3 can be moved by releasing the engagement. A lock mechanism 6 is provided (the invention according to claim 2).

The pipe structure 1c shown in FIG. 9 has a slide mechanism portion 17 formed by detachably attaching two lock mechanism cylinders 5 to a rack pipe 3 as a support column, and the upper and lower ends of the rack pipe 3 and the lock mechanism cylinder body. The horizontal beam pipe 9 is connected to the five auxiliary joints 19. However, the number of the lock mechanism cylinders 5 is not limited to the illustrated embodiment. Of course, the number of rack pipes 3 can be increased or decreased as appropriate according to the length of the rack pipe 3.
Then, the lock mechanism cylinder 5 is engaged with the rack teeth 3a of the rack pipe 3 to fix the position of the lock mechanism cylinder 5, or the engagement is released to enable the lock mechanism cylinder 5 to move. A mechanism unit 6 is provided. The configuration of the lock mechanism unit 6 that constitutes the slide mechanism unit 17 is the same as the configuration of the lock mechanism unit 6 (see FIGS. 4 to 6) of the telescopic mechanism unit 4 described in the first embodiment, and a description thereof will be omitted. .

  Therefore, the pipe structure 1c shown in FIG. 9 operates when the lock mechanism portion 6 of the slide mechanism portion 17 is operated to release the lock tooth member 6a of the lock mechanism portion 6 from the rack teeth 3a of the rack pipe 3. The cylinder 5 can be slid and the shelf board 11 etc. which are the components of a pipe structure can be moved up and down. The shelf plate 11 moved to a desired height engages the lock tooth member 6a of the lock mechanism portion 6 with the rack tooth 3a of the rack pipe 3 by operating the lock mechanism portion 6 of the slide mechanism portion 17, and its position Can be fixed (the invention according to claim 3).

The pipe structure 1d shown in FIGS. 10A and 10B includes a rotary joint 18 in which the cross beam pipe 9 of the pipe structure 1d and the outer peripheral pipe 13a of the sleeve top plate 13 which is an accessory of the pipe structure 1d. The sleeve crests 13 are connected to each other so as to be freely raised and lowered.
This pipe structure 1 d is formed by connecting the base end of a vertical pipe 14 as a support to a lower support pipe 12 parallel to the horizontal beam pipe 9, and in the lock mechanism cylinder 5 attached to the other end of the vertical pipe 14. The rack pipe 3 movably inserted into the rack pipe 3 forms a telescopic mechanism portion 4 of the cheek cane. The other end of the rack pipe 3 is connected to the support pipe 16 parallel to the outer peripheral pipe 13a of the sleeve top plate 13 and A cheek cane for supporting the sleeve top plate 13 is provided.
Then, the sleeve top plate is engaged with the lock mechanism cylinder 5 by engaging the rack teeth 3a of the rack pipe 3 to fix the position of the rack pipe 3, or releasing the engagement so that the rack pipe 3 can be moved. A lock mechanism unit 6 (see FIGS. 4 to 6) capable of rotating 13 is provided.

  Therefore, in the pipe structure 1d shown in FIGS. 10A and 10B, the lock mechanism 6 of the telescopic mechanism 4 is operated to lock or release, and the lock tooth member 6a of the lock mechanism 6 is connected to the rack pipe. 3 is released from the rack teeth 3a, the position of the rack pipe 3 can be fixed or expanded (slid), and the sleeve top plate 13 connected by the horizontal beam pipe 9 of the pipe structure 1d and the rotary joint 18 can be raised and lowered. To a vertical posture (see FIG. 10B) from a horizontal posture (see FIG. 10A). Then, the sleeve top plate 13 rotated in the above-described posture engages the lock tooth member 6a of the lock mechanism portion 6 with the rack teeth 3a of the rack pipe 3 by the operation of the lock mechanism portion 6 of the telescopic mechanism portion 4. The position can be fixed (the invention according to claim 4).

  Although the present invention has been described above based on the illustrated embodiment, it is needless to say that the present invention is not limited to the illustrated embodiment. The present invention can be implemented in various forms within the scope of design changes and applications normally performed by those skilled in the art.

It is a perspective view which shows the representative example of the pipe structure described in Claim 1. It is a perspective view which shows different embodiment of the pipe structure described in Claim 1. (A) is sectional drawing of a rack pipe. (B) is explanatory drawing which shows roughly the state which pressed the additional roller to the rack pipe and formed the rack tooth. (A) It is a perspective view which expands and shows an expansion-contraction mechanism part. (B) And (C) is explanatory drawing which shows the structure of a locking mechanism part. (A) is a perspective view which expands and shows a different expansion-contraction mechanism part. (B) And (C) is explanatory drawing which shows the structure of a locking mechanism part. (A) is a perspective view which expands and shows a different expansion-contraction mechanism part. (B)-(D) is explanatory drawing which shows the structure of a locking mechanism part. It is a perspective view which shows the representative example of the pipe structure described in Claim 2. It is a perspective view which shows different embodiment of the pipe structure described in Claim 2. It is a perspective view which shows the representative example of the pipe structure described in Claim 3. (A) And (B) is a perspective view which shows the pipe structure described in Claim 4.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1a-1d Pipe structure 2, 14 Vertical pipe 3 Rack pipe 3a Rack tooth 4 Telescopic mechanism part 5 Lock mechanism cylinder 6-8 Lock mechanism part 9 Cross beam pipe 12, 16 Support pipe 13 Sleeve top plate 17 Slide mechanism part 19 Attachment Fitting

Claims (7)

The vertical pipe as a support and the rack pipe movably inserted into the lock mechanism cylinder attached to the outer periphery of the upper end of the vertical pipe constitutes an expansion / contraction mechanism part of the support. A pipe structure is constructed by connecting horizontal beam pipes,
The lock mechanism cylinder body is provided with a lock mechanism portion that engages with a rack tooth of a rack pipe to fix the position of the rack pipe, or releases the engagement to allow the rack pipe to move. A pipe structure. The expansion / contraction mechanism part of the support is composed of the rack pipe as the support and the lock mechanism cylinder attached to the outer periphery of the lower end of the vertical pipe that is movably fitted to the rack pipe, and a horizontal beam pipe is connected to the vertical pipe and the rack pipe. Connected to form a pipe structure,
The lock mechanism cylinder body is provided with a lock mechanism portion that engages with the rack teeth of the rack pipe to fix the position of the vertical pipe, or releases the bite so that the vertical pipe can move. A pipe structure. At least one lock mechanism cylinder is movably attached to a rack pipe as a support to form a slide mechanism, and a pipe is formed by connecting a cross beam pipe to the upper and lower ends of the rack pipe and an attachment joint of the lock mechanism cylinder. The structure is composed,
The lock mechanism cylinder body is provided with a lock mechanism portion that engages with a rack tooth of a rack pipe to fix the position of the lock mechanism cylinder body or releases the bite to enable the movement of the lock mechanism cylinder body. A pipe structure characterized by that. The horizontal beam pipe of the pipe structure and the outer peripheral pipe of the sleeve top plate are connected by a rotary joint, and the sleeve top plate is installed up and down freely,
A rack in which a base end of a vertical pipe as a support is connected to a lower support pipe parallel to the horizontal beam pipe in a pipe structure, and is movably inserted into a lock mechanism cylinder attached to the other end of the vertical pipe A pipe structure provided with a cheek cane that supports the sleeve top plate by connecting the other end of the rack pipe to a support pipe parallel to the outer peripheral pipe of the sleeve top plate. Configured,
The sleeve top plate can be rotated by moving the lock mechanism cylinder to the rack teeth of the rack pipe to fix the position of the rack pipe, or releasing the bite to allow the rack pipe to move. A pipe structure characterized in that a lock mechanism portion is provided. The lock mechanism is engaged with the rack teeth of the rack pipe, and the lock tooth member for fixing the position of the rack pipe, and interlocking with the lock tooth member, the engagement of the lock tooth member is released and the rack pipe can be moved. A lever that
The pipe structure according to any one of claims 1 to 4, wherein the lock tooth member and the lever are rotatably attached to the lock mechanism cylinder. The lock mechanism portion includes a lock tooth member that engages with the rack teeth of the rack pipe and fixes the position of the rack pipe, and a lever that releases the engagement of the lock tooth member and enables the rack pipe to move.
The pipe structure according to any one of claims 1 to 4, wherein the lock tooth member is rotatably attached to the lock mechanism cylinder via a spring material.   When the cross-sectional shape of the rack pipe is circular, a portion of the circumference is crushed and the resin is adhered and coated on the outer peripheral surface of the steel pipe formed with the flat portion in the axial direction. The rack teeth are formed by rolling the rack teeth forming roller in the axial direction when the resin is still in a soft state, and the rack teeth are formed according to any one of claims 1 to 6. The pipe structure described.

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