TWI694849B - Metal shaft assembly structure - Google Patents

Abstract

Provided is a metal shaft assembling structure, the metal shaft can be erected firmly, and can be simply decomposed into parts, so it can be easily handled. Equipped with: a metal shaft 8, a tapered portion 12 and a screw hole portion 11 formed at the insertion portions 10 at both ends in the axial direction; a support metal 7 (a pair of left and right), a receiving cylindrical portion 13 formed on the receiving tapered portion 16 The inner surface (corresponding to the tapered portion 12) has the insertion portion 10 inserted into the receiving cylindrical portion 13; and the fastening metal 9 has a screw portion 18 (corresponding to the screw hole portion 11) inserted into the The metal part 7 is supported, whereby the screw portion 18 is screwed to the screw hole portion 11, and in the screwed state, through the rotation operation, the insertion portion 10 is drawn into the receiving cylindrical portion 13 to make the tapered portion 12 and the receiving tapered portion 16 form a tapered fitting state.

Description

Metal shaft assembly structure

The invention relates to an assembly structure of a metal shaft, such as an iron rod, a horizontal bar, a walking auxiliary armrest, etc., which supports the metal shaft in an erecting shape, thereby being used in sports, walking training, etc.

For example, it has the advantage that the iron rod used as a sports tool can be brought into a gym, a park and other places through the assembly structure. In order to serve as an assembly structure, an assembly metal shaft must be erected on a post or the like.

In the assembly of a conventional iron rod, a structure disclosed by inserting both ends of a metal shaft into a pillar and then tightening screws to fix it (for example: Patent Documents 1 and 2). However, if the screws are combined, the screws are easy to slack. Due to the slack of the screws, it is not easy to securely fix the metal shaft in an erecting shape. In addition, due to the loosening of the screw, the metal shaft rotates inadvertently, which will cause the problem that the sports tool cannot be used safely.

On the other hand, it is revealed that the iron rod is not a metal shaft, but a structure that stands upright on the ground. In such a structure, a metal cylinder is embedded in concrete buried in the ground, the metal cylinder and the pillar are taperedly fitted, and after the pillar is erected, a metal shaft is erected on the pillar (for example: Patent Documents 3 and 4). However, in the conventional structure, the fixing of the metal shaft to the pillar is also fixed by screws. Therefore, as in the above, the screw is easy to loosen, and the problem of not being sure to fix the metal shaft is difficult. In addition, in Patent Documents 3 and 4, since the post is buried in the ground, the post cannot be disassembled, and there is also a problem that parts cannot be transported.

Patent Literature Patent Document 1: Japanese Utility Model Registration No. 3203976 Patent Document 2: Japanese Shigong Sho 58-6439 Patent Document 3: Japanese Shigong Zhao No. 40-2005 Patent Document 4: Japanese Shigongshao No. 45-19615

The present invention is conceived in consideration of the problems of the above-mentioned conventional structures, and its purpose is to provide a metal shaft assembly structure, which can be firmly erected on iron rod sports tools or walking training tools, can be safely used, and can be easily decomposed Into parts, so it can be easily handled.

The metal shaft assembling structure of the present invention includes: a metal shaft with tapered portions and screw holes formed in the insertion portions at both ends in the axial direction; a supporting metal piece (a pair of left and right) with a receiving cylindrical portion formed in the receiving cone The inner surface of the portion (corresponding to the tapered portion), the insertion portion is inserted into the receiving cylindrical portion; and the fastening metal piece having a screw portion (corresponding to the screw hole portion) is inserted into the supporting metal piece, thereby The screw portion is screwed to the screw hole portion, and in the screwed state, through the rotation operation, the insertion portion is drawn into the receiving cylindrical portion, so that the tapered portion and the receiving tapered portion form a tapered fit status.

In the present invention, the screw part and the stopper part (the diameter of which is larger than the screw part) of the fastening metal part are formed along the axial direction, and the receiving cylindrical part and the stopper part accommodating part of the support metal part (in order to Allowing axial movement to the stop portion to accommodate the stop portion) is formed along the axial direction, if the fastening metal piece is rotated in one direction, the fastening metal piece and the metal shaft are pulled into the The direction of the supporting metal piece is moved to form the tapered fitting state. If the reverse rotation operation is performed, the tapered fitting state is released, and the direction of disengagement of the fastening metal piece and the metal shaft is released to release This tapered fitting state.

An operation lever portion (for the rotation operation) of the fastening metal piece is formed on the outer side of the stopper portion, and a lever seat hole portion (for inserting the operation lever portion) is formed in the support metal piece, and the stopper portion accommodates The total length of the portion and the lever seat hole portion is the same as or slightly longer than the total length of the stopper portion and the operating lever portion.

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

In addition, the length of the block seat hole portion is the same as the length of the operation block portion. In addition, the operation block portion is formed to have the same diameter as the end surface of the supporting metal member, and the cover cover portion covering the end surface of the supporting metal member is integrally formed.

The fastening metal piece is screwed to the metal shaft. Since the metal shaft and the supporting metal piece are taperedly fitted, the metal shaft can be firmly erected on the supporting metal piece. Also, it can be simply broken down into small parts, so it can be easily transported.

Hereinafter, the embodiment of the present invention will be described more specifically using illustrations. In addition, in each embodiment, the same symbols are attached to the same members.

(First embodiment) 1 to 6 show the first embodiment when the present invention is applied to an iron rod, FIGS. 1 to 3 show the iron rod 1, FIG. 4 is an exploded cross-sectional view of the main part of the first embodiment, and FIG. 5 is a fastening Side view of the metal part 9, and FIG. 6 is a sectional view of the assembly process.

As shown in FIG. 1 to FIG. 3, it includes: a pair of left and right pillars 2 and a metal shaft 8 between the pillars 2; the metal shaft 8 is erected horizontally and then assembled on the pillar 2 to constitute the iron rod 1, so it can be installed Use on the ground in the house. As shown in FIG. 3, each pillar 2 is formed by assembling two pillars 2a into a triangle, and the lower end of each pillar 2a contacts the ground. A skirt-shaped cover 4 made of rubber is put on the lower end of each column 2a, which has a non-slip effect on the ground. In addition, the two end portions of the connecting shaft 5 are welded to the two post members 2a of each post 2, thereby maintaining each post member 2a in a triangular shape.

This embodiment uses the metal shaft assembly structure 6 of the iron rod 1 as shown in FIGS. 2 and 4 and includes: a support metal 7 (a pair of left and right), which is fixed to a pair of left and right pillars 2 (triangle) by welding The top of the column 2a); the metal shaft 8, inserting both ends of the axial direction on a pair of supporting metal parts 7 and erecting it on the supporting metal parts 7 in a horizontal manner; and the fastening metal part 9 used to hold the metal shaft Both ends of 8 are fixed to the supporting metal 7.

At both ends in the axial direction of the metal shaft 8, insertion portions 10 are formed, and the insertion portions 10 are inserted into each support metal 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, screw hole portions 11 (made of female threads extending along the insertion portion 10) are formed in the axial direction.

The support metal 7 is welded to the top of the pillar 2 and thereby fixed to the left and right pillars 2 in a horizontal state. As shown in FIG. 4, the receiving metal portion 13, the stopper portion accommodating portion 14, and the rod seat hole portion 15 are sequentially formed on the support metal 7 from the metal shaft 8 side in the communication state in the axial direction.

The receiving cylindrical portion 13 is a hole into which the insertion portion 10 of the metal shaft 8 is inserted, and on its inner surface, a receiving tapered portion 16 (corresponding to the tapered portion 12 on the insertion portion 10 side) is formed. The insertion portion 10 is inserted into the receiving cylindrical portion 13, whereby the tapered portion 12 of the insertion portion 10 and the receiving tapered portion 16 are fitted in a tapered shape.

The stopper portion accommodating portion 14 is a hole for allowing the fastening metal piece 9 described later to move back and forth in the axial direction, and the stopper portion 19 of the fastening metal piece 9 extends into the stopper portion accommodating portion 14 to thereby be movable WAY contains stopper 19. The lever base hole portion 15 is a hole, and the operation lever portion 20 of the fastening metal 9 is rotatably inserted.

As shown in FIG. 4, the fastening metal 9 is formed with the screw portion 18, the stopper portion 19, and the operation lever portion 20 in this order from the support metal 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 extending into the receiving cylindrical portion 13 of the support metal 7.

The stopper portion 19 is a circular block having a larger diameter and a predetermined thickness than the screw portion 18. The stopper portion 19 extends into the stopper portion accommodating portion 14 of the support metal 7. In contrast, the stopper portion accommodating portion 14 of the support metal 7 is formed to be thicker than the thickness of the stopper portion 19. Thereby, the stopper receiving portion 14 allows the stopper 19 to move back and forth in the axial direction. With this movement, the entire fastening metal 9 moves back and forth in the axial direction of the support metal 7. That is, the fastening metal 9 moves in the direction of the metal shaft 8 (left direction in FIG. 4) and in the direction of disengagement of the metal shaft 8 (right direction). If the fastening metal 9 moves toward the metal shaft 8 (left direction), the stopper portion 19 abuts on one side end portion (left end portion in FIG. 4) 14a of the stopper portion accommodating portion 14, so the movement stops, as When the metal fixing member 9 moves in a direction away from the metal shaft 8 (right direction), the stopper portion 19 abuts on the other end portion (left end portion in FIG. 4) 14b of the stopper portion accommodating portion 14 and therefore stops moving.

The operating lever portion 20 is a member located outside the stopper portion 19 and protruding into the lever seat hole portion 15 of the support metal 7, and in this state, receives a rotating operation from the outside. A hex wrench-like tool (not shown) is inserted into the operation lever portion 20, and the rotation operation is performed by this operation. In order to withstand this rotation operation, a tool hole 21 (refer to FIG. 5) conforming to the shape of the tool is formed in the axial direction of the operation lever 20.

For the above fastening metal piece 9, the supporting metal piece 7 is in a half-open state, and the fastening metal piece 9 is installed in the half-open body. That is, the stopper portion 19 extends into the stopper portion accommodating portion 14, whereby the screw portion 18 enters the receiving barrel portion 13, and the operating lever portion 20 extends into the rod seat hole portion 15, thereby tightening the entire The metal piece 9 is temporarily set at half open. Next, the other half-open body is butt-welded, whereby the fastening metal 9 is provided as the support metal 7. Thereby, the support metal 7 and the fastening metal 9 are integrated. Then, in this state, the metal shaft 8 can erect the support metal 7. Also, it can be fixed with bolts instead of welding the half-open body.

Next, the operation of assembling the metal shaft 8 to the support metal 7 will be described using FIG. 6. FIG. 6(A) shows a state in which the metal shaft 8 is inserted in the direction of the arrow E from the receiving cylindrical portion 13 side of the support metal 7 provided with the fastening metal 9. The insertion portion 10 of the metal shaft 8 is inserted into the support metal 7 from the opening end side (left end side) of the receiving cylindrical portion 13. By this insertion, the screw hole portion 11 of the metal shaft 8 and the screw portion 18 of the fastening metal 9 are brought into an engaged state in which the screw is engaged.

6(B) shows a state where the fastening metal 9 is engaged with the metal shaft 8 (initial screwing state), insert the tool into the tool hole 21, and rotate in the screwing direction shown by the arrow X to tighten The state where the solid metal piece 9 moves in the screwing direction. Through the rotation operation, the screw portion 18 of the fastening metal 9 is screwed with the screw hole portion 11 of the metal shaft 8, so the fastening metal 9 and the metal shaft 8 are attracted to each other, that is, the fastening metal 9 is oriented In the direction of arrow F, the metal shaft 8 moves in the direction of arrow G, and these components are pulled into the support metal 7.

Through this pulling-in, the tapered portion 12 of the metal shaft 8 and the receiving tapered portion 16 of the support metal 7 are fitted in a tapered shape, and the state shown in FIG. 6(C) (the screwing completion state) is formed. When this is pulled in, the stopper portion 19 of the fastening metal 9 moves within the stopper portion accommodating portion 14 and abuts on one side end portion 14a. By stopping the contacting movement, the rotation operation ends.

The metal shaft 8 and the supporting metal piece 7 are inserted into a tapered shape to generate a strong frictional force between the metal shaft 8 and the supporting metal piece 7. Therefore, the metal shaft 8 is firmly fixed to the support metal 7 and does not rotate accidentally. Moreover, due to the frictional force of the tapered fitting, the fastening metal 9 can prevent accidental rotation in the reverse screwing direction, and therefore does not rotate in the loosening direction. Therefore, the fixed state in which the metal shaft 8 does not rotate can be reliably maintained. As described above, the iron rod 1 can be used safely and for a long period of time.

In this embodiment, the total length L1 (see FIG. 4) of the stopper portion accommodating portion 14 of the support metal 7 and the rod seat hole portion 15 and the stopper portion 19 of the fastening metal 9 and the operating lever portion 20 are set The total length L2 is the same or slightly longer. That is, L1=L2 or L1>L2 is set. If L1=L2 is set, the outer end surface of the fastening metal 9 and the outer end surface of the supporting metal 7 are flush with each other when the screwing is completed. If L1>L2 is set, in the state where the screwing is completed, the outer end surface of the fastening metal 9 is extended into the support metal 7. With these settings, in the state where the screwing is completed, the fastening metal 9 is not exposed from the support metal 7, so the fastening metal 9 is not subject to inadvertent rotational force. Thereby, the screwing state of the fastening metal 9 is not loosened. In addition, the fastening metal 9 does not touch or interfere with the user of the iron rod. Therefore, the iron rod 1 can be used safely.

FIG. 6(D) shows the tapered fitting state of (C), and the operation of erecting the metal shaft 8 is released. Insert the tool into the operation lever portion 20 of the fastening metal 9 and rotate in the reverse screw direction shown by arrow Y. Through this rotation operation, the fastening metal 9 is moved away from the screwing with the metal shaft 8, that is, in the direction away from the metal shaft 8 (arrow H direction), so that the metal shaft 8 and the support metal 7 The tapered fitting is loosened.

Further, the rotation operation is continued, whereby the metal shaft 8 extends from the support metal 7 and moves in the direction of arrow I, the fastening metal 9 moves in the direction of arrow H, and the metal shaft 8 and the fastening metal 9 disengage in the direction of The support metal 7 moves inside. By this movement, after the tapered fitting of the metal shaft 8 and the support metal 7 is released, the metal shaft 8 is pushed out of the support metal 7. By this, the metal shaft 8 is released, and the metal shaft 8 can be detached from the support metal member 7. Therefore, not only the support metal member 7 and the metal shaft 8 which have been set with the fastening metal member 9 can be simply decomposed, but also can be decomposed into Small parts, so its advantages are: no increase in parts and can be easily handled.

(Second embodiment) 7 to 9 are assembly structures 6A showing a second embodiment of the present invention. In the second embodiment, the fastening metal 9 has the screw portion 18 and the operation block portion 25 in the axial direction. The screw portion 18 is the same as the first embodiment, and is screwed into 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 into which a tool is inserted is formed. The operation block portion 25 is formed of a circular block having a predetermined thickness (length). In addition, 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 7.

The support metal 7 has a receiving cylindrical portion 13 (the insertion portion 10 into which the metal shaft 8 is inserted) on the metal shaft 8 side, and a block hole portion 27 communicates with the receiving cylindrical portion 13. The operation block portion 25 of the fastening metal 9 is inserted into the block seat hole portion 27. The operation block portion 25 extends into the block seat hole portion 27, whereby the screw portion 18 is inserted into the receiving cylindrical portion 13 of the support metal 7. Also, the metal shaft 8 has the insertion portion 10 and the screw hole portion 11 at both ends in the axial direction as in the first embodiment, and the tapered portion 12 is formed in the insertion portion 10, and the diameter gradually decreases toward the free end (outer end).

In this embodiment, the length of the block seat hole 27 of the support metal 7 is the same as the length of the operation block 25 of the fastening metal 9. Since the length is the same, when the operation block portion 25 extends into the block seat hole portion 27, the cover cover portion 26 outside the operation block portion 25 can cover the outer end surface of the support metal 7 to prevent the operation block portion 25 from being exposed. Thereby, careless rotation force is not applied to the fastening metal 9 and therefore the screwed state is not loosened. In addition, because there are no protrusions, it can be used as a safe assembly structure.

FIG. 9 is a diagram showing an assembled state of this embodiment. When assembling, after inserting the fastening metal 9 into the support metal 7, the insertion portion 10 of the metal shaft 8 is inserted into the support metal 7. By this insertion, the screw hole portion 11 of the metal shaft 8 and the screw portion 18 of the fastening metal 9 bite into the engaged state of screwing. Then, the tool rotation operation is used to move the fastening metal 9 in the screwing direction, whereby the screw portion 18 of the fastening metal 9 is screwed with the screw hole portion 11 of the metal shaft 8, so the metal shaft 8 deeply supports the metal Within 7, the tapered portion 12 and the receiving tapered portion 16 of the support metal 7 are tapered to fit. Through the tapered fitting, a strong frictional force is formed between the metal shaft 8 and the support metal 7, so the metal shaft 8 is firmly fixed to the support metal 7. In this assembled state, the lid cover portion 26 covers the outer end surface of the support metal 7 so that the iron rod user can be safely used without contacting or interfering with the iron rod user.

With respect to the state of FIG. 9, the rotation of the tool moves the fastening metal 9 in the reverse screwing direction, whereby the fastening metal 9 and the metal shaft 8 are unscrewed, and the metal shaft 8 is pushed out of the fastening metal 9, Release these tapered fits. Thereby, the metal shaft 8 can be detached from the support metal 7 and can be decomposed into small parts of the metal shaft 8, the support metal 7 and the fastening metal 9, so the parts can be easily transported without increasing the parts.

(Third Embodiment) 10 and 11 show an assembly structure 6B of the third embodiment of the present invention. In this embodiment, the operation block portion 25 of the metal member 9 is fastened from the second embodiment, and the lid cover portion 26 is deleted. The other structure is the same as that of the second embodiment. Therefore, the operation of tapering the metal shaft 8 to the support metal 7 is performed in the same manner as in the second embodiment.

In this embodiment, through the rotation operation, the operation block portion 25 of the fastening metal 9 extends into the block seat hole portion 27 of the support metal piece 7, but the length of the block seat hole portion 27 is the same as the length of the operation block portion 25 the same. Therefore, it is possible to prevent the operation block portion 25 from being exposed. There is no inadvertent rotation force on the fastening metal piece 9, so the screwed state is not loose and there are no protrusions, which can be used as a safe assembly structure.

In this embodiment, a tool is used to rotate and tighten the fastening metal 9 in the reverse screwing direction, whereby the fastening metal 9 and the metal shaft 8 are loosened, and the metal shaft 8 is pushed out from the support metal 7 to release the taper Chimeric. Therefore, the metal shaft 8 can be detached from the support metal 7 and can be decomposed into small parts of the metal shaft 8, the support metal 7, and the fastening metal 9. Therefore, it can be easily handled without increasing the parts.

The above embodiment applies the present invention to the iron rod 1. However, if the metal shaft 8 is conically fitted to the supporting metal member 7 by fastening the metal member 9, it can also be applied to the horizontal bar, the auxiliary walking armrest, and the sun Hangers, jungle fitness training ground, assembled swings and other items.

1‧‧‧Iron rod 2‧‧‧ Pillar 2a‧‧‧pillar 4‧‧‧Skirt cover 5‧‧‧Connected shaft 6, 6A, 6B ‧‧‧ assembly structure 7‧‧‧Support metal parts 8‧‧‧Metal shaft 9‧‧‧ fastening metal parts 10‧‧‧Insert 11‧‧‧Screw hole 12‧‧‧Cone 13‧‧‧Take the tube part 14‧‧‧Reception Department 14a‧‧‧The end of the stop part 14b‧‧‧End of the other side of the housing of the stopper 15‧‧‧Pole seat hole 16‧‧‧Take the tapered part 18‧‧‧Screw Department 19‧‧‧stop part 20‧‧‧Operation lever 21‧‧‧Tool hole 25‧‧‧Operation Block Department 26‧‧‧Cover 27‧‧‧Block hole L1, L2‧‧‧Total length E, F, G, H, I, X, Y‧‧‧ arrow

Fig. 1 is an overall front view of the present invention when it is applied to an iron rod Fig. 2 is an exploded front view when applied to an iron rod. Fig. 3 is an overall side view when applied to an iron rod. 4 is an exploded cross-sectional view of the first embodiment of the present invention. 5 is a side view of the fastening metal used in the first embodiment. 6(A) to (D) are cross-sectional views showing the assembly procedure of the first embodiment. 7 is an exploded cross-sectional view of the second embodiment of the present invention. 8 is a side view of the fastening metal used in the second embodiment. 9 is a cross-sectional view showing an assembled state of the second embodiment. Fig. 10 is an exploded cross-sectional view of a third embodiment of the present invention. Fig. 11 is a cross-sectional view showing an assembled state of the third embodiment.

6‧‧‧Assembly structure

7‧‧‧Support metal parts

8‧‧‧Metal shaft

9‧‧‧ fastening metal parts

10‧‧‧Insert

11‧‧‧Screw hole

12‧‧‧Cone

13‧‧‧Take the tube part

14‧‧‧Reception Department

14a‧‧‧The end of the stop part

14b‧‧‧End of the other side of the housing of the stopper

15‧‧‧Pole seat hole

16‧‧‧Take the tapered part

18‧‧‧Screw Department

19‧‧‧stop part

20‧‧‧Operation lever

21‧‧‧Tool hole

Claims (1)

A metal shaft assembling structure, characterized in that it is provided with: a metal shaft with tapered portions and screw hole portions formed in the insertion portions at both ends in the axial direction; a supporting metal piece (a pair of left and right) with a receiving cylindrical portion formed on the receiving The inner surface of the tapered portion (corresponding to the tapered portion), the insertion portion is inserted into the receiving cylindrical portion; and the fastening metal piece has a screw portion (corresponding to the screw hole portion), inserted into the support metal piece In this way, the screw portion is screwed into the screw hole portion, and in the screwed state, through the rotation operation, the insertion portion is drawn into the receiving cylindrical portion, so that the tapered portion and the receiving tapered portion form a tapered fit Closed state; wherein, the screw part and the stop part (the diameter of which is larger than the screw part) of the fastening metal part are formed along the axial direction, and the receiving cylindrical part and the stop part accommodating part of the support metal part (in order to The axial movement to the stopper portion is allowed to accommodate the stopper portion) is formed along the axial direction; wherein, if the fastening metal piece is rotated in one direction, the fastening metal piece and the metal shaft are pulled Move into the direction of the supporting metal piece to form the tapered fitting state; wherein, by reverse rotation operation, the tapered fitting state is released, and move in the direction that the fastening metal piece and the metal shaft disengage , The tapered fitting state is released; wherein, the operating lever portion of the fastening metal piece (for the rotation operation) is formed outside the stopper portion; wherein, the supporting metal piece is formed with a lever seat hole portion (use Insert the operation lever part); wherein, the total length of the stopper part accommodating part and the lever seat hole part is the same as or slightly longer than the total length of the stopper part and the operation lever part.

Images