TW201936231A - Metal shaft assembly structure - Google Patents

Abstract

Provided is a metal shaft assembly structure which can rigidly carry out bridging of a metal shaft, and can be easily disassembled into components and transported easily. The metal shaft assembly structure is provided with: a metal shaft 8 having a tapered section 12 and a threaded hole section 11 formed in an insertion section 10 of both axial ends; a pair of right and left support fittings 7 having a receiving cylindrical section 13 into which the insertion section 10 is inserted, the receiving cylindrical section 13 having formed on the inner surface thereof a receiving tapered section 16 corresponding to the tapered section; and a fastening fitting 9 having a threaded rod section 18 corresponding to the threaded hole section 11, the threaded rod section 18 being screwed into the threaded hole section 11 via insertion into the support fittings 7, and, through a rotational operation in the screwed state, the insertion section 10 being drawn into the receiving cylindrical section 13 and the tapered section 12 and the receiving tapered section 16 being taper-fitted.

Description

Metal shaft assembly structure

The invention relates to a metal shaft assembly structure, such as an iron bar, a horizontal bar, a walking auxiliary handrail, etc., and the metal shaft support is in the shape of a erection, thereby being used in sports, walking training and the like.

For example, it has the advantage that the iron rod as a moving tool can be brought into a stadium, a park, or the like through an assembly structure. In order to be an assembled structure, it is necessary to mount an assembled metal shaft at a portion such as a pillar.

In the assembly of the conventional iron rod, a structure in which both ends of the metal shaft are inserted into the pillar and then the screw is tightened is disclosed (for example, Patent Documents 1 and 2). However, if the screws are combined, the screws are easily slackened, and the screws are not easily fixed in a erected shape due to the looseness of the screws. Moreover, since the screw is loosened and the metal shaft is inadvertently rotated, there is a problem that the moving tool cannot be used safely.

On the other hand, it is revealed that the iron rod is not a metal shaft but a structure in which the pillar is erected on the ground. In such a configuration, a metal cylinder is embedded in the concrete buried in the ground, and the metal cylinder is taperedly fitted to the pillar, and the pillar is erected, and a metal shaft is placed on the pillar (for example, Patent Documents 3 and 4). However, in this conventional structure, the fixing of the metal shaft to the pillar is also fixed by screwing, so that the screw is easily slackened as described above, and the problem that the metal shaft is not easily fixed is generated. Further, in Patent Documents 3 and 4, since the pillar is buried in the ground, the pillar cannot be disassembled, and there is a problem that the component cannot be transported.

CITATION LIST Patent Document 1: Japanese Utility Model Publication No. 3203976 Patent Document 2: Japanese Patent Publication No. Sho 58-6439 (Patent Document 3) Japanese Patent Publication No. Sho 40-2005 Publication No. Hei No. 45-19615

The present invention is conceived in consideration of the above-mentioned problems of the conventional structure, and an object thereof is to provide a metal shaft assembly structure in which a metal shaft can be firmly erected in an iron bar type exercise tool or a walking training tool, which can be safely used and can be easily decomposed. It is a part that can be easily handled.

The metal shaft assembling structure of the present invention comprises: a metal shaft, and a taper portion and a screw hole portion are formed at the insertion portions at both axial ends; the supporting metal members (the pair of left and right) have a receiving tubular portion formed on the receiving taper The inner surface of the portion (corresponding to the tapered portion) is inserted into the receiving tubular portion; and the fastening metal member has a screw portion (corresponding to the screw hole portion) and is inserted into the supporting metal member. The screw portion is screwed to the screw hole portion, and in the screwing state, the screw portion is rotated, thereby inserting the insertion portion into the receiving cylinder portion, and the tapered portion and the receiving tapered portion are taperedly fitted. status.

In the present invention, the screw portion and the stopper portion (the diameter of which is larger than the screw portion) of the fastening metal member are formed along the axial direction, and the receiving tubular portion and the stopper portion receiving portion of the supporting metal member (for Allowing the axial movement of the stopper portion to receive the stopper portion) is formed along the axial direction, and if the fastening metal member is rotated in one direction, the fastening metal member and the metal shaft are pulled into the The direction of the supporting metal member is moved to form the tapered fitting state. If the reverse rotation operation is performed, the tapered fitting state is released, and the fastening metal member and the metal shaft are disengaged and released. The tapered fitting state.

An operating lever portion (for the rotating operation) of the fastening metal member is formed on an outer side of the stopper portion, and the supporting metal member is formed with a lever hole portion (for inserting the operating lever portion), and the stopper portion receives The total length of the portion and the boss hole portion is the same length or a length longer than the total length of the stopper portion and the operating lever portion.

The screw portion and the operation block portion (for the rotation operation) of the fastening metal member are formed along the axial direction, and the receiving cylinder portion and the block seat portion of the supporting metal member (the operation block portion is inserted) are Formed along the axial direction.

Further, the length of the block hole portion is the same as the length of the operation block portion.
Further, the operation block portion has the same diameter as the end surface of the support metal member, and the cover cover portion covering the end surface of the support metal member is integrally formed.

The fastening metal member is screwed to the metal shaft, and since the metal shaft and the supporting metal member are taperedly fitted, the metal shaft can be firmly erected on the supporting metal member. Moreover, it can be easily broken down into small parts, so it can be easily handled.

Hereinafter, embodiments of the present invention will be described more specifically with reference to the drawings. Further, in the respective embodiments, the same members are denoted by the same reference numerals.

(First embodiment)
1 to 6 are views showing a first embodiment in which the present invention is applied to an iron bar, and Figs. 1 to 3 show an iron bar 1. Fig. 4 is an exploded cross-sectional view showing a main portion of the first embodiment, and Fig. 5 is a fastening portion. A side view of the metal member 9, and Fig. 6 is a cross-sectional view of the assembly procedure.

As shown in FIG. 1 to FIG. 3, the metal shaft 8 between the pair of left and right pillars 2 and the pillars 2 is provided. The metal shaft 8 is horizontally stacked and assembled on the pillars 2 to constitute the iron bars 1, so that it can be installed. Use on the ground inside the house. As shown in Fig. 3, each of the pillars 2 is formed by assembling two pillars 2a in a triangular shape, and the lower end portions of the respective pillars 2a are in contact with the ground. A skirt cover 4 made of rubber is placed on the lower end of each of the columns 2a to have an anti-slip effect on the ground. Further, both end portions of the connecting shaft 5 are welded to the two pillars 2a of the respective pillars 2, whereby the respective pillars 2a are maintained in a triangular shape.

As shown in FIGS. 2 and 4, the assembly structure 6 for the metal shaft of the iron bar 1 of the present embodiment includes a support metal member 7 (a pair of right and left) and is fixed to the left and right pair of pillars 2 by welding (triangle On the top of the column 2a); the metal shaft 8 is inserted into the pair of supporting metal members 7 in the axial direction, and is horizontally mounted on the supporting metal member 7; and the fastening metal member 9 is used for the metal shaft Both ends of the 8 are fixed to the supporting metal member 7.

An insertion portion 10 is formed at both axial ends of the metal shaft 8, and the insertion portion 10 is inserted into each of the support metal members 7. As shown in Fig. 4, a tapered portion 12 is formed on the insertion portion 10, and its diameter gradually decreases toward the free end (outer end). Further, at both ends of the metal shaft 8, a screw hole portion 11 (constituted by a female screw extending along the insertion portion 10) is formed in the axial direction.

The supporting metal members 7 are welded to the top of the pillars 2, thereby being fixed to the left and right pillars 2 in a horizontal state. As shown in FIG. 4, in the supporting metal member 7, the receiving tubular portion 13, the stopper portion accommodating portion 14, and the rod hole portion 15 are formed in this order from the metal shaft 8 side in the communicating state in the axial direction.

The receiving tubular portion 13 is a hole into which the insertion portion 10 of the metal shaft 8 is inserted, and an inner receiving surface thereof is formed with a receiving tapered portion 16 (corresponding to the tapered portion 12 on the side of the insertion portion 10). The insertion portion 10 is inserted into the receiving tubular portion 13, whereby the tapered portion 12 of the insertion portion 10 and the receiving tapered portion 16 are taperedly fitted.

The stopper portion accommodating portion 14 is a hole for allowing the fastening metal member 9 to be described later to move back and forth in the axial direction, and the stopper portion 19 of the fastening metal member 9 projects into the stopper portion accommodating portion 14, thereby being movable The damper portion 19 is accommodated in a manner. The lever hole portion 15 is a hole into which the operating lever portion 20 of the fastening metal member 9 is rotatably inserted.

As shown in FIG. 4, the fastening metal member 9 is formed with a screw portion 18, a stopper portion 19, and an operation lever portion 20 in this order from the support metal member 7 (metal shaft 8) side in the axial direction. The screw portion 18 is a male screw, and is screwed into the screw hole portion 10 of the metal shaft 8 in a state of being inserted into the receiving tubular portion 13 of the supporting metal member 7.

The stopper portion 19 is a circular block having a diameter larger than the screw portion 18 and having a predetermined thickness. The stopper portion 19 is formed in the stopper portion accommodating portion 14 of the support metal member 7. On the other hand, the stopper portion accommodating portion 14 of the support metal member 7 is also formed thicker than the thickness of the stopper portion 19. Thereby, the stopper portion accommodating portion 14 allows the stopper portion 19 to move back and forth in the axial direction. By this movement, the entire fastening metal member 9 moves back and forth in the axial direction inside the support metal member 7. That is, the fastening metal member 9 is moved in the direction of the metal shaft 8 (the left direction in FIG. 4) and the direction in which the metal shaft 8 is removed (the right direction). When the fastening metal member 9 moves toward the metal shaft 8 (leftward direction), the stopper portion 19 abuts against one side end portion (left end portion in FIG. 4) 14a of the stopper portion housing portion 14, and thus stops moving, such as tight When the fixing metal member 9 moves in the direction away from the metal shaft 8 (the right direction), the stopper portion 19 abuts against the other end portion (the left end portion in FIG. 4) 14b of the stopper portion housing portion 14, and thus the movement is stopped.

The operation lever portion 20 is a member located at an outer side of the stopper portion 19 and extends into the lever hole portion 15 of the support metal member 7, and in this state, the member that is subjected to the rotational operation from the outside. A hexagon wrench type tool (not shown) is inserted into the operation lever portion 20, and the rotation operation is performed by this operation. In order to withstand the rotation operation, a tool hole 21 (see FIG. 5) conforming to the tool shape is formed in the axial direction of the operation lever portion 20.

For the above fastening metal member 9, the supporting metal member 7 is in a half-open state, and the fastening metal member 9 is attached to the half opening. That is, the stopper portion 19 is inserted into the stopper portion accommodating portion 14, whereby the screw portion 18 enters the receiving cylinder portion 13, and the operation lever portion 20 is inserted into the rod hole portion 15, thereby fastening the entire portion The metal member 9 is temporarily set to be half open. Next, the other half-opening body is butt welded, whereby the fastening metal member 9 is provided as the supporting metal member 7. Thereby, the supporting metal member 7 and the fastening metal member 9 are integrated. Next, in this state, the metal shaft 8 can erect the supporting metal member 7. Further, instead of welding the half-opening body, it may be fixed by bolts.

Next, an operation of assembling the metal shaft 8 to the supporting metal member 7 will be described using FIG.
Fig. 6(A) shows a state in which the supporting metal member 7 having the fastening metal member 9 is provided, and the metal shaft 8 is inserted from the receiving cylinder portion 13 side in the direction of the arrow E. The metal shaft 8 has the insertion portion 10 inserted into the support metal member 7 from the open end side (left end side) of the receiving tubular portion 13. Through the insertion, the screw hole portion 11 of the metal shaft 8 and the screw portion 18 of the fastening metal member 9 form a snap-fit engagement state.

Fig. 6(B) shows a state in which the fastening metal member 9 is engaged with the metal shaft 8 (in the initial state of screwing), and the tool is inserted into the tool hole 21, and is rotated in the screwing direction indicated by the arrow X to tighten The state in which the solid metal member 9 moves in the screwing direction. By the rotation operation, the screw portion 18 of the fastening metal member 9 is screwed with the screw hole portion 11 of the metal shaft 8, so that the fastening metal member 9 and the metal shaft 8 are attracted toward each other, that is, the fastening metal member 9 is directed toward In the direction of the arrow F, the metal shaft 8 is moved in the direction of the arrow G, and these members are pulled into the supporting metal member 7.

By this pulling, the tapered portion 12 of the metal shaft 8 and the receiving tapered portion 16 of the supporting metal member 7 are taperedly fitted to form the state of Fig. 6(C) (the end state of screwing). When the pull-in comes in, the stopper portion 19 of the fastening metal member 9 moves in the stopper portion accommodating portion 14, and abuts against the one end portion 14a, and the rotation operation is terminated by stopping the abutting movement.

The metal shaft 8 and the supporting metal member 7 are subjected to a tapered fitting to generate a strong frictional force between the metal shaft 8 and the supporting metal member 7. Therefore, the metal shaft 8 is firmly fixed to the supporting metal member 7, and does not inadvertently rotate. Further, by the frictional force of the tapered fitting, the fastening metal member 9 can prevent inadvertent rotation in the reverse screwing direction, and therefore does not rotate in the slack direction. Therefore, it is possible to surely maintain the fixed state in which the metal shaft 8 does not rotate. As described above, the iron rod 1 can be used safely and for a long period of time.

In this embodiment, the stopper portion accommodating portion 14 of the support metal member 7 and the rod hole portion 15 are set to have a total length L1 (see FIG. 4), and the stopper portion 19 of the fastening metal member 9 and the operation lever portion 20 are provided. The total length L2 is equal or slightly longer. That is, if L1 = L2 or L1 > L2 is set, if L1 = L2 is set, the outer end surface of the fastening metal member 9 is flush with the outer end surface of the supporting metal member 7 in the screwing end state. When L1>L2 is set, the outer end surface of the fastening metal member 9 is formed to extend into the support metal member 7 in the screw end state. With these settings, in the end state of the screwing, the fastening metal member 9 is not exposed to the outside from the supporting metal member 7, so that the fastening metal member 9 is not subjected to an inadvertent rotational force. Thereby, the screwing state of the fastening metal member 9 is not slack. In addition to this, the fastening metal member 9 does not contact or interfere with the user of the iron rod. Therefore, the iron rod 1 can be used safely.

Fig. 6(D) is a view showing the operation of releasing the metal shaft 8 by the state of the tapered fitting of the pair (C). The tool is inserted into the operating lever portion 20 of the fastening metal member 9, and is rotated in the reverse screwing direction indicated by an arrow Y. Through this rotation operation, the metal shaft 8 and the supporting metal member 7 are moved toward the direction in which the fastening metal member 9 is offset from the metal shaft 8, that is, in the direction away from the metal shaft 8 (the direction of the arrow H). The tapered fitting is loosened.

Further, the rotation operation is continued, whereby the metal shaft 8 is extended from the supporting metal member 7 and moved in the direction of the arrow I, and the fastening metal member 9 is moved in the direction of the arrow H, in the direction in which the metal shaft 8 and the fastening metal member 9 are disengaged, The support metal member 7 moves inside. By this movement, after the tapered fitting of the metal shaft 8 and the supporting metal member 7 is released, the metal shaft 8 is pushed out from the supporting metal member 7. Thereby, the erection of the metal shaft 8 is released, and the metal shaft 8 can be detached from the supporting metal member 7, so that not only the supporting metal member 7 and the metal shaft 8 to which the fastening metal member 9 is set can be easily disassembled, but also can be decomposed into Small parts, so the advantages are: no increase in parts and easy handling.

(Second embodiment)
7 to 9 show an assembled structure 6A according to a second embodiment of the present invention. In the second embodiment, the fastening metal member 9 has the screw portion 18 and the operation block portion 25 in the axial direction. Similarly to the first embodiment, the screw portion 18 is screwed to the screw hole portion 11 formed in the insertion portion 10 of the metal shaft 8. The operation block portion 25 is subjected to a rotation operation, and a tool hole 21 for tool insertion is formed. The operation block portion 25 is formed of a circular block having a predetermined thickness (length). Further, a cover lid portion 26 is integrally formed on the outer side of the operation block portion 25. The lid cover portion 26 has a diameter to cover the outer end surface of the support metal member 7.

The supporting metal member 7 has a receiving tubular portion 13 (an insertion portion 10 into which the metal shaft 8 is inserted) on the side of the metal shaft 8, and a block hole portion 27 is communicated with the receiving tubular portion 13. The block hole portion 27 is inserted with the operation block portion 25 of the fastening metal member 9. The operation block portion 25 projects into the block hole portion 27, whereby the screw portion 18 is inserted into the receiving tubular portion 13 of the support metal member 7. Further, the metal shaft 8 has the insertion portion 10 and the screw hole portion 11 at both axial ends in the same manner as in the first embodiment, and the tapered portion 12 is formed in the insertion portion 10, and the diameter toward the free end (outer end) is gradually reduced.

In the present embodiment, the length of the block hole portion 27 of the supporting metal member 7 is the same as the length of the operation block portion 25 of the fastening metal member 9. Since the length of the operation block portion 25 is extended into the block hole portion 27, the cover cover portion 26 outside the operation block portion 25 can cover the outer end surface of the support metal member 7, and the operation block portion 25 can be prevented from being exposed. Thereby, no inadvertent rotational force is applied to the fastening metal member 9, and thus the screwing state is not slack. Moreover, since there is no protrusion, it can be used as a safe assembly structure.

Fig. 9 is a view showing the assembled end state of the embodiment. At the time of assembly, after the fastening metal member 9 is inserted into the support metal member 7, the insertion portion 10 of the metal shaft 8 is inserted into the support metal member 7. Through the insertion, the screw hole portion 11 of the metal shaft 8 and the screw portion 18 of the fastening metal member 9 bite into the engaged state in which the screwing is formed. Thereafter, the fastening metal member 9 is moved in the screwing direction by the tool rotation operation, whereby the screw portion 18 of the fastening metal member 9 is screwed with the screw hole portion 11 of the metal shaft 8, so that the metal shaft 8 deeply supports the metal member. In the seventh portion, the tapered portion 12 and the receiving tapered portion 16 of the supporting metal member 7 are taperedly fitted. Through the tapered fitting, a strong frictional force is formed between the metal shaft 8 and the supporting metal member 7, so that the metal shaft 8 is firmly fixed to the supporting metal member 7. In the assembled end state, the lid cover portion 26 covers the outer end surface of the support metal member 7, so that the iron rod 1 can be safely used without contacting or interfering with the user of the iron rod.

With respect to the state of FIG. 9, the fastening metal member 9 is moved in the reverse screwing direction by the tool rotation operation, whereby the fastening metal member 9 and the metal shaft 8 are unscrewed, and the metal shaft 8 is pushed out from the fastening metal member 9, These tapered fittings are released. Thereby, the metal shaft 8 can be removed from the supporting metal member 7, and can be decomposed into the metal shaft 8, the supporting metal member 7, and the small parts of the fastening metal member 9, so that the parts can be easily handled without increasing the size.

(Third embodiment)
10 and 11 show an assembled structure 6B according to a third embodiment of the present invention. In the present embodiment, the operation block portion 25 of the metal member 9 is fastened from the second embodiment, and the lid cover portion 26 is removed. The other configuration is the same as that of the second embodiment. Therefore, the operation of taper fitting the metal shaft 8 to the supporting metal member 7 is performed in the same manner as in the second embodiment.

In the present embodiment, the operation block portion 25 of the fastening metal member 9 projects into the block hole portion 27 of the support metal member 7 by the rotation operation, but the length of the block seat portion 27 is the length of the operation block portion 25. the same. Therefore, the operation block portion 25 can be prevented from being exposed. The fastening metal member 9 does not exert an inadvertent rotational force, so that the screwing state is not slack, and there is no protrusion, and it can be used as a safe assembly structure.

In the present embodiment, the fastening metal member 9 is rotated by the tool in the reverse screwing direction, whereby the fastening of the fastening metal member 9 and the metal shaft 8 is released, and the metal shaft 8 is pushed out from the support metal member 7, and the taper is released. Chimerism. Therefore, the metal shaft 8 can be removed from the supporting metal member 7, and can be decomposed into the metal shaft 8, the supporting metal member 7, and the small portion of the fastening metal member 9. Therefore, the parts can be easily handled without increasing the size.

In the above embodiment, the present invention is applied to the iron bar 1. However, if the metal shaft 8 is taperedly fitted to the supporting metal member 7 by fastening the metal member 9, the same applies to the horizontal bar, the walking auxiliary handrail, and the drying. Hangers, jungle physical training grounds, assembled swings and other items.

1‧‧‧ iron bars

2‧‧‧ pillar

2a‧‧‧ Columns

4‧‧‧ skirt cover

5‧‧‧Connected shaft

6, 6A, 6B‧‧‧ assembly structure

7‧‧‧Support metal parts

8‧‧‧Metal shaft

9‧‧‧ fastening metal parts

10‧‧‧Insert Department

11‧‧‧ screw hole

12‧‧‧ Tapered

13‧‧‧Accepting the tube

14‧‧‧Block Department

14a‧‧‧End of the block housing

14b‧‧‧The other end of the block housing

15‧‧‧ pole hole

16‧‧‧With tapered part

18‧‧‧ Screw Department

19‧‧ ‧Block section

20‧‧‧Operation part

21‧‧‧Tool hole

25‧‧‧Operation block

26‧‧‧ lid cover

27‧‧‧ Block hole

L1, L2‧‧ ‧ total length

E, F, G, H, I, X, Y‧‧‧ arrows

Figure 1 is an overall front view of the present invention when applied to an iron bar

Figure 2 is an exploded front view of the iron bar.

Figure 3 is an overall side view of an iron bar.

Figure 4 is an exploded cross-sectional view showing a first embodiment of the present invention.

Fig. 5 is a side view of the fastening metal member used in the first embodiment.

6(A) to 6(D) are cross-sectional views showing an assembly procedure of the first embodiment.

Figure 7 is an exploded cross-sectional view showing a second embodiment of the present invention.

Fig. 8 is a side view of the fastening metal member used in the second embodiment.

Fig. 9 is a cross-sectional view showing the assembled state of the second embodiment.

Figure 10 is an exploded cross-sectional view showing a third embodiment of the present invention.

Figure 11 is a cross-sectional view showing an assembled state of a third embodiment.

Claims (6)

A metal shaft assembly structure characterized by having: a metal shaft having a tapered portion and a screw hole portion at an insertion portion at both axial ends; a supporting metal member (a pair of left and right) having a receiving tubular portion formed on an inner surface of the receiving tapered portion (corresponding to the tapered portion), the insertion portion being inserted in the receiving tubular portion; a fastening metal member having a screw portion (corresponding to the screw hole portion) inserted into the support metal member, whereby the screw portion is screwed to the screw hole portion, and in the screwing state, the rotation operation is performed The insertion portion is pulled into the receiving tubular portion, and the tapered portion and the receiving tapered portion are formed into a tapered fitting state. The metal shaft assembly structure according to Item 1, wherein the screw portion and the stopper portion (the diameter is larger than the screw portion) of the fastening metal member are formed along an axial direction, and the support metal member of the support metal member The portion and the stopper portion accommodating portion (the stopper portion is accommodated in order to allow the axial movement of the stopper portion) to be formed along the axial direction, and the fastening metal member is rotated in a direction by the fastening metal member. And the metal shaft moves in a direction of being pulled into the supporting metal member to form the tapered fitting state. If the reverse rotation operation is performed, the tapered fitting state is released, and the fastening metal member and the fastening metal member are The metal shaft is moved out of the direction, and the tapered fitting state is released. The metal shaft assembling structure according to Item 2, wherein the operating lever portion of the fastening metal member (for the rotating operation) is formed on an outer side of the stopper portion, and the supporting metal member is formed with a rod hole portion ( The total length of the stopper portion accommodating portion and the rod hole portion is the same length or a length longer than the total length of the stopper portion and the operation lever portion. The metal shaft assembling structure according to Item 1, wherein the screw portion and the operating block portion (for the rotating operation) of the fastening metal member are formed along an axial direction, and the supporting tubular portion of the supporting metal member The block hole portion (the operation block portion is inserted) is formed along the axial direction. The metal shaft assembly structure according to Item 4, wherein the length of the block hole portion is the same as the length of the operation block portion. The metal shaft assembly structure according to Item 5, wherein the operation block portion has the same diameter as the end surface of the support metal member, and the cover cover portion covering the end surface of the support metal member is integrally formed.