JP3208349B2 - Hinge manufacturing method and hinges - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hinge for opening and closing a closing member such as a door or a lid installed at an entrance of a building such as a building or a container.

[0002]

2. Description of the Related Art Metal fittings for opening and closing a closing member, such as a door or a lid, installed at an entrance are formed by processing one end of a thin metal plate into a cylindrical shape to form a tube, and the remaining part is a flat blade. A part of the tube portion is cut and combined so that the axes of the tube portions of the two blade plates coincide with each other, and a rotating shaft is inserted so that the blade plate is rotatable. A hinge having a structure in which the center between the thickness center of the blade portion and the center of the pipe portion is eccentric by an amount necessary for close contact when the two blade plates are closed is most often used.

However, the function of the hinge gradually increases in accordance with the diversification of closing members such as doors and lids. For example, a type having a mechanism for adjusting the mounting position in up, down, left, right, front and rear directions, a wing portion called a flag hinge. Either one can be easily removed without the need for close contact between the surfaces. Provided on the slats to reduce the possibility that the building or the closing member itself will be distorted during a disaster such as an earthquake and the opening and closing will be hindered. Built-in springs at the connecting part of the pipe section provide an earthquake-resistant hinge with an automatic adjustment mechanism that reduces the gap provided between the upper and lower blades and prevents damage when an excessive load is applied to the hinge in an emergency It was started.

In an earthquake-resistant flag hinge, the contact surfaces of the upper and lower pipes are intentionally spaced apart from each other for an automatic adjustment mechanism, and a step is provided in the middle of the inner surface of the upper pipe to utilize the step. In a normal use condition, the compression spring does not shrink more strongly than the load applied to the upper blade, and conversely, in an abnormal condition where the load is strong, the compression spring shrinks, and the upper and lower pipes contact each other. In the deformation in the range of the gap between the surfaces, the opening / closing function is maintained because the damage to the hinge is avoided or reduced, and the opening / closing function is enabled again when the deformed portion of the door or the door frame is removed.

[0005]

The hinge was originally manufactured by sheet metal processing for the main part, and the processing such as cutting was limited to only some parts. The increase in the number of parts inevitably led to an increase in the manufacturing cost, and efforts have been made to reduce the manufacturing cost by adopting a synthetic resin for the shape and material suitable for mass production. The metal material is still used for the parts that require.

Among the members constituting the hinge, the members requiring the most strength are a blade plate, a tube provided on the blade plate, and a shaft connecting the blade plates using the tube portion. The pipe and shaft are parts that smoothly control the rotation, and drilling and other drilling may be performed due to the requirement of fitting accuracy.However, such processing is not possible if stainless steel is used for rust prevention measures. Poor workability of steel causes the production cost to increase.

In particular, when the door or door frame to which the hinge is attached is deformed, the hinge is directly provided with the distortion due to the deformation, so that the opening / closing function cannot be performed. In the case where the pipe is provided with an earthquake-resistant mechanism that absorbs the strain, it is necessary to incorporate a pre-compressed spring in the pipe, so that a step needs to be processed in the pipe using a drill or a reamer. This processing itself poses a cost problem which accounts for a considerable proportion of the processing cost of the entire hinge.

[0008]

According to the present invention, a rectangular thin steel plate is formed by bending one side of a thin steel plate into a cylindrical shape, and the remaining portion is formed into a flat blade portion, and a mounting hole is required in a surface of the blade portion. Two blade plates opened by the number are stacked up and down while aligning the axis of each tube part, and a rotating shaft is inserted so as to penetrate the upper and lower tube portions, and the rotating shaft is inserted into the tube portion of the lower blade plate. It is fixed and made rotatable with the pipe of the upper blade, and a flag hinge with a built-in spring in the pipe of the upper blade and equipped with an earthquake-resistant mechanism that absorbs movement below the pipe or above the rotation axis. Then, the shape of the step portion and the tip of the rotary shaft provided in the tube portion is set to a predetermined shape by (A) bending the tube portion of the upper blade plate and fixing the blade surface and the end surface of the tube portion by welding or the like, and manufacturing work of the ring by cutting B) tubing, (C)
After inserting a pre-processed ring at a predetermined position on the inner surface of the pipe portion of the upper blade plate, either side is fixed by welding to form a step, and (D) the tip of the rotating shaft inserted into the upper pipe portion A method of manufacturing a hinge , characterized by being manufactured and combined by various processes, to be thinned so as to fit the inner diameter of the ring,
After inserting a ring at a predetermined position on the inner surface of the pipe provided on the upper blade plate by the method, either side of the ring is fixed to the inner wall of the pipe by welding to form a step , and the upper part is formed at the step. Of the slats
The spring built into the tube part also serves as a receiving seat for the spacer , and the periphery of the rotating shaft is thinned so as to fit the inner diameter of the ring, and the rotating shaft is press-fitted and fixed in the tube portion of the lower blade plate.
Insert the tip of the rotating shaft into the step and lower the upper blade
The spacer in contact with the tip of the rotating shaft separates from the step
It has a structure to compress the spring Te is a hinge characterized by.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention is directed to a pipe-shaped hinge when it is necessary to form a step on one of the inner surfaces of the upper and lower blades of a seismic flag hinge in order to incorporate a compression spring. Instead of turning the inner surface of the hole by boring with a drilling tool, insert the ring of the required shape on the inner surface of the The circumference is fixed by welding to form a step, the tip of the shaft to be inserted is made thinner, and the structure that fits with the ring is used.

[0010] By adopting this structure, even if the material of the wing plate, which is the main constituent material of the hinge, is stainless steel, the bending and welding by the conventional sheet metal processing are stopped, and the inner surface does not need to be turned. Is easily obtained by cutting the tubular material, and a relief for insertion is provided on the rotating shaft side, so that the welding itself does not need to be finished by spot welding level by using it together with a simple jig. The content becomes extremely simple.

[0011]

The connection method and structure of the blade plate of the earthquake-resistant structure according to the present invention greatly reduce the time required for finish processing at the time of production of the pipe portion without impairing the function.

[0012]

FIG. 1 is a top view of a flag hinge 1 having a seismic structure, and FIG.
1 is a sectional view taken along the line aa in FIG. 1. The flag hinge 1 is composed of upper and lower blades 2, 3, a rotating shaft 4 with a ball 5, a spacer 6, a spring 7, springs 8, 9, and a skirt 10. A ring 12 is inserted into the pipe portion 2A of the upper blade plate 2 and fixed by welding.
The spring 7 is inserted in a compressed state, and is supported by a prosthesis 9 fixed to the upper end of the tube 2A.

The periphery of the tip 4B of the rotary shaft 4 is shaved smaller than the ring 12, and the shaft is inserted into the tube portion 3A of the lower blade plate 3 by means of press fitting or the like, and the rear end 4A of the shaft is welded and fixed.
When the ball 5 is inserted into the recess 4C at the tip, the tip of the recess is swaged to perform a retaining process, and the ball is inserted into the tube portion 2A of the upper blade 2, the upper blade 2 is rotated by the rotating shaft 4 of the lower blade 3. Is held so as to be rotatable.

In this state, the flag hinge 1 has a normal shape, and a distance L between the lower end of the tube 2A and the upper end of the tube 3A is maintained. Even when the lower surface of the spacer 6 in contact with the upper surface to be formed comes into contact with the tip of the ball 5 and a load is applied to the upper blade plate 2 by attaching the door to the flag hinge 1, the repulsive force of the spring 7 is increased in advance to the load or more. Since it is set, the spacer 6 does not move,
The spring 7 does not move even when the upper blade 2 is removed from the lower blade 3.

FIG. 3 shows a case where a load greater than the repulsive force of the spring 7 is applied to the upper blade plate 2. In this state, the spacer 6 remains in contact with the ball 5, separates from the upper surface of the ring 12, and moving, but between the upper end of the lower and the pipe portion 3A of the tube portion 2A shrinks L _1, such situation the door and door frame under the influence of disaster (deformation often occurs on the door frame side) When the relationship is broken by deformation, it is impossible to open and close the door,
Since the built-in spring receives the deformation force and prevents the flag hinge 1 itself from being damaged, the door and the door frame can be opened and closed again by removing the deformed portions.

The upper and lower blade plates 2 and 3 shown in FIGS. 2 and 3 are both made of stainless steel, but may be formed by sheet metal working and welding as in the past, and a positioning jig (not shown) is used after the forming. When the ring 12 is inserted into the correct position and fixed by welding, it is not necessary to turn the inner surface of the pipe 2A with a tool such as a drill, and the rotary shaft 4 may be additionally processed by cutting a part of the outer shape in the manufacturing process. The number of man-hours required to process the flag hinge 1 was greatly reduced.

[0017]

Comparative Example FIG. 4 is a cross-sectional view of an earthquake-resistant flag hinge 21 before the present example, showing a rotating shaft 2 with upper and lower blade plates 22, 23 and a ball 25.
4, a spacer 26, a spring 27, prostheses 28 and 29, and a skirt 30. The spacer 26 and the spring 2 extend upward from the center of the inner surface 22 </ b> B of the tube portion 22 </ b> A of the upper blade plate 22.
An inner cylinder 22C for inserting the cylinder 7 in a compressed state is provided, and the spring 27 is supported by a prosthesis 29 fixed to the upper end of the tube 22A.

In this structure, the inner cylinder 22C is indispensable, but it is difficult to work because the material is stainless steel, and it is necessary that the spacer 26 slides on the inner cylinder 22C surface and stops at a predetermined position. On the other hand, if the inner diameter difference (step) between the inner surface 22B and the inner cylinder 22C is too small, it is useless, and in consideration of the finish of the sliding surface, the processing speed is reduced, the productivity is reduced, and it is difficult to reduce the cost. In addition, the blades 22 and 2
No. 3 is manufactured by bending a thin plate, so that the blade portion is also the same thickness as the tube portion. Turning the inner surface of the tube portion 22A is partially thin, so it is not preferable in terms of strength. However, there is almost no difference in the processing cost.

According to the hinge manufacturing method and the hinge according to the present invention, the following effects are obtained. The turning of the inner surface of the pipe portion provided on the slat plate is not required, and the manufacture of the flag hinge is extremely easy. The thickness of the blades did not fluctuate, and a favorable result in terms of strength was obtained.

[Brief description of the drawings]

FIG. 1 is a top view of a flag hinge in an embodiment.

FIG. 2 is a front sectional view taken along line aa of FIG.

FIG. 3 is a state diagram when the upper blade plate has moved downward in the cross-sectional view of FIG. 2;

FIG. 4 is a front sectional view of a flag hinge in a comparative example.

[Explanation of symbols]

 2, 3 blade plate 2A, 3A tube 4 rotating shaft 5 ball 6 spacer 7 spring 12 ring

Claims (2)

(57) [Claims] [Claim 1] and a square shape by bending the one side to the cylindrical tube portion of the thin steel sheet, the rest of the flat blade portion, the blade plate open only the required number of mounting holes in the vane portion surface two The upper and lower pipes are fixed by inserting a rotating shaft so as to penetrate the upper and lower pipes and fixing the rotating shaft to the lower blade board. The flag hinge, which is rotatable and has a built-in spring in the pipe section of the upper blade plate and has an anti-shake mechanism for absorbing the movement below the pipe section or above the rotation axis, is provided on the pipe section. (A) bending the tube portion (2A) of the upper blade plate (2) and fixing the surface of the blade portion and the end surface of the tube portion to a predetermined shape by welding or the like; the tubing was cut manufacturing operation the ring (12), (C) the tube portion of the upper blade plate (2) (2A) to the inner surface, pre-processed ring (12) a predetermined position After being inserted into the holder, either side is fixed by welding to form a step, and (D) the tip of the rotating shaft (4) inserted into the upper tube (2A) is fitted to the inner diameter of the ring (12). A hinge manufacturing method characterized by being manufactured and combined by various processes, which are thinly processed so as to fit. 2. A blade having a rectangular thin steel plate having one side bent into a cylindrical shape to form a tube, the remaining part being a flat blade, and a required number of mounting holes formed in the surface of the blade. The upper and lower pipes are fixed by inserting a rotating shaft so as to penetrate the upper and lower pipes and fixing the rotating shaft to the lower blade board. The flag hinge, which is rotatable, has a built-in spring in the tube portion of the upper blade plate, and has a vibration-proof mechanism for absorbing the movement below the tube portion or above the rotation axis, is provided. after insertion of the ring (12) to the tube portion (2A) a predetermined position of the inner surface with a), and fixed by welding to the tube inner wall to either side of the ring to form a stepped portion at the stepped portion Up
Pipe section of the slats (2) and spring built in (2A) (7) scan
The rotating shaft (4) serves as the seat for the pacer (6 ).
The periphery of the tip is thinned to fit the inner diameter of the ring (12) , and the rotating shaft is inserted into the tube (3A) of the lower blade plate (3).
The rotary shaft tip was press-fitted is inserted into the stepped portion, the upper wing
When the root plate (2) descends, the space in contact with the tip of the rotating shaft (4)
P o (6), hinges, characterized in that the <br/> Ru structure to compress the spring (7) away from the stepped portion.