JP4218921B2 - Anti-seismic hinge and manufacturing method thereof - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an anti-seismic hinge and a method for manufacturing the anti-seismic hinge, and more particularly, to a novel anti-seismic hinge structure capable of reducing the manufacturing cost mainly by plastic working and a manufacturing method thereof.
[0002]
[Prior art]
The applicants previously proposed a new anti-seismic hinge that can be opened and evacuated even if the door frame is deformed to a diamond shape due to an earthquake by Japanese Patent Application No. 58-109350 (patent No. 1606244). Many are currently in practical use.
[0003]
As shown in FIG. 1, the anti-seismic hinge includes a first vane plate 2 having a support shaft 1 integrally projecting from a side edge and a guide cylinder 3 integrally connected to the side edge. In a hinge having a second blade 4 fitted to the shaft 1, a load plug 5 that abuts against the tip of the support shaft 1 is slidably disposed in the guide tube 3. A locking portion 6 is formed to prevent the shaft from being pulled out to the support shaft 1 side. On the other hand, a compression coil spring 7 is mounted in the guide tube 3 on the side opposite to the support shaft 1 with respect to the load plug 5 to load the load plug. 5 is pressed against the locking portion 6 so that the axial load of the support shaft 1 is carried by the compression coil spring 7 via the load plug 5.
[0004]
As shown in FIG. 2, the anti-seismic hinge 8 configured as described above is provided with a support shaft 1 against deformation of the door frame such that the lower end of the free side edge of the door 9 abuts the lower side of the door frame 11. Is removed from the guide tube 3 to eliminate the twisting of the door 9 and the door frame 11.
[0005]
On the other hand, the support shaft 1 resists the elasticity of the compression coil spring 7 against deformation of the door frame such that the upper end of the free side edge of the door 9 abuts the upper side of the door frame 11 as shown in FIG. By pushing the load plug 5 into the guide tube 3, the contact between the door 9 and the door frame 11 is eliminated.
[0006]
[Problems to be solved by the invention]
The anti-seismic hinge having the above-described configuration, of course, exhibits the desired function and is practically used as described above, but the present applicants have found that there is still room for improvement in the manufacturing method. .
[0007]
For example, in order to couple the support shaft 1 to the first slat 2, as shown in FIG. 4, the side edge of the first slat 2 is rounded to form a cylindrical part, and the cylindrical part is supported by this cylindrical part. After the shaft 1 is inserted, the tube portion and the support shaft 1 are joined by welding.
[0008]
In order to form the locking portion 6 in the guide tube 3, drilling and / or reamer processing is performed from the upper end opening of the guide tube 3 in FIG. In order to prevent the lid plug 12 from slipping out, for example, a pin (not shown) penetrating the upper end opening of the guide tube 3 and the lid plug 12 in the radial direction is driven.
[0009]
However, the welded joint of the support shaft 1 in the first blade 2 is a bottleneck in production and occupies most of the processing unit price.
[0010]
In addition, boring processing with a drill, reamer, etc. in the second blade plate 4 and assembly drill processing for driving a pin for fixing a lid plug are also bottlenecks in production, which also occupies most of the processing unit price. .
[0011]
Therefore, the present invention is a novel anti-seismic hinge that can securely join the support shaft 1 to the first blade plate 2 without welding, and eliminates the boring and assembly drilling of the second blade plate 4. The structure and its manufacturing method are proposed, and the purpose is to reduce the manufacturing cost of anti-seismic hinges.
[0012]
[Means for Solving the Problems]
In order to achieve the above object, the anti-seismic hinge according to the invention described in claim 1 is formed by forming the first tube plate connected to the side edge portion into a cylinder and fitting the support shaft into the cylinder. A first vane plate and a second vane plate in which a guide tube formed by cylindrically forming a second tube plate continuously provided on the side edge is fitted to the support shaft. A load plug that comes into contact with the tip of the shaft is slidably disposed, and a locking portion that prevents the load plug from slipping out to the support shaft side is formed. On the other hand, the load plug is opposite to the support shaft. A compression coil spring is mounted in the guide cylinder in the cylinder, and the load plug is elastically pressed against the locking portion so that the axial load of the support shaft is supported by the compression coil spring via the load plug. In the case where the opening of the guide cylinder on the side opposite to the load plug with respect to the spring is closed with a lid plug, Is formed in a cylindrical inner peripheral surface of the first blade plate, the supporting shaft groove of the cross-sectional shape of semi-circular ring, the first support shaft an annular groove in cross section is semicircular formed on the support shaft outer peripheral surface, a circular cross section The ring-shaped retaining ring, which is partially open at the end , is engaged with an annular ridge formed by fitting , while the cross-sectional shape formed on the inner peripheral surface of the guide cylinder is semicircular and is formed into an annular retaining groove. A locking part is formed by fitting a ring-shaped retaining ring having a circular cross section and a part thereof open, and on the other hand, formed on the inner peripheral surface of the opening end of the guide tube and having a semicircular sectional shape and an annular lid plug The groove plugs are formed on the outer peripheral surface of the lid plug and engaged with annular protrusions having a semicircular cross-sectional shape , respectively, so that they are prevented from coming off.
[0013]
In the invention described in claim 2, at least one ring-shaped first support shaft groove is formed at a predetermined position of the support shaft in which a steel ball is embedded at the tip, and the first support shaft groove is fixed to the first support shaft groove. The first step of fitting the ring, the first blade with the mounting screw hole opened, and the side edge of the first blade are integrally connected and bent so that the cross section is almost circular. The second step of manufacturing the first material plate having the first cylindrical plate, and the horizontal second surface corresponding to the first support groove on the surface which becomes the cylindrical inner surface after the bending of the first cylindrical plate. The third step of forming the support shaft groove and the side edge of the first tube plate are formed so that the cross-sectional shape is substantially semicircular, and the support shaft is fixed to the semicircular second support shaft groove on the inner surface thereof. A fourth step of bending the first tubular plate so as to wrap the support shaft after the ring is fitted, and a fifth step of forming a protrusion on the outer peripheral surface of the short cylindrical lid plug The second vane plate having the mounting screw hole opened, and the second vane plate are integrally connected to the side edge of the second vane plate, and are bent so as to have a substantially circular cross section. A sixth step of manufacturing a second material plate having two cylindrical plates, and the other end of the surface of the second cylindrical plate that becomes the inner surface of the guide cylinder after bending, opposite to the first blade plate A horizontal lid plug groove corresponding to the projection of the lid plug is formed in the portion, a seventh step of forming a stop groove in the center portion, and the side edge portion of the second tube plate is substantially semicircular in cross section. An eighth step of forming the guide tube by bending the second tube plate so as to wrap the lid plug after the projection of the lid plug is fitted into the semicircular lid plug groove on the inner surface thereof The compression coil spring, the load plug, and the load plug retaining ring that is partially open from the opening end of the guide cylinder are reduced in diameter. And a ninth step of engaging the load plug with the load plug retaining ring and expanding the load plug retaining ring into the retaining groove. To do.
[0014]
Furthermore, in the invention described in claim 3, at least one ring-shaped first support shaft groove is formed in a predetermined portion of the support shaft in which a steel ball is embedded at the tip, and the first support shaft groove is formed in the first support shaft groove. The first step of fitting the retaining ring, the first blade plate with the mounting screw hole opened, and the side blade edge of the first blade plate are integrally connected and bent so that the cross section is substantially circular. A second step of manufacturing a first material plate having a first cylindrical plate to be molded, and a horizontal first surface corresponding to the first support groove on the surface that becomes the cylindrical inner surface after bending molding of the first cylindrical plate. The third step of forming the two spindle grooves, and the side edge of the first tube plate are formed so that the cross-sectional shape is substantially semicircular, and the semicircular second spindle groove on the inner surface is formed on the spindle. A fourth step of bending the first tube plate so as to wrap the support shaft after fitting the retaining ring, and a ring-shaped first on the outer peripheral surface of the short cylindrical lid plug A fifth step of forming a plug groove and fitting a retaining ring in the first lid plug groove, a second blade plate having an attachment screw hole opened, and a side edge of the second blade plate are integrated with each other. A sixth step of manufacturing a second material plate having a second tube plate that is continuously provided and bent to have a substantially circular cross section and serves as a guide tube, and a guide tube after bending the second tube plate A horizontal second lid plug groove corresponding to the first lid plug groove is formed at the other end portion of the surface that becomes the inner surface opposite to the one end facing the first blade, and a stop groove is formed at the center portion, respectively. And a retaining ring that is formed so that the cross-sectional shape of the second cylindrical plate is substantially semicircular, and is fitted to the lid plug in the semicircular wide two lid plug groove on the inner surface thereof. An eighth step of forming a guide tube by bending the second tube plate so as to wrap the lid plug, and opening the guide tube The compression coil spring, the load plug, and the load plug retaining ring that is partially open are pushed in a state of being elastically deformed to a small diameter, and the load plug retaining ring is further expanded and fitted into the retaining groove. And a ninth step of locking the load plug in the guide tube by a retaining ring.
[0015]
【Example】
Embodiments of the present invention will be described below with reference to FIGS.
In addition, since the structure of the anti-seismic hinge by this invention will become clear naturally if the manufacturing method is demonstrated, the manufacturing method is demonstrated previously.
[0016]
In FIG. 5, reference numeral 1 denotes a support shaft in which a steel ball 13 is embedded at the tip (upper end), and reference numeral 14 denotes a first material plate.
[0017]
A first support shaft groove 15 having a semicircular cross-sectional shape is formed at the lower end portion of the support shaft 1 in FIG. 5, and a ring-shaped retaining ring 16 (circular in cross section and partially opened in the first support shaft groove 15 ( 6) is set as the first step of the method for manufacturing an anti-seismic hinge according to the present invention.
[0018]
Note that the inner diameter of the retaining ring 16 in the natural state is set to be slightly smaller than the outer diameter of the first support shaft groove 15, and in the state of being fitted to the support shaft, the support shaft can be securely held by elasticity. .
[0019]
Further, before the retaining ring 16 is fitted into the first support shaft groove 15, the retaining ring 16 is expanded by elastic deformation and moved in the axial direction while sliding the outer peripheral surface of the support shaft 1. It is.
[0020]
On the other hand, the first material plate 14 is integrated with the first blade plate 2 having a plurality of (in the illustrated embodiment, five) screw holes 17, 17 and the side edge of the first blade plate 2. And a first cylindrical plate 18 that is continuously formed and bent so that the cross section is substantially circular.
[0021]
The first material plate 14 is cut out by, for example, a shearing process, and after opening a plurality of screw holes 17 and 17 by punching, an opening edge portion on the side into which a countersunk screw of the screw hole 17 is screwed if necessary. The second step of the method of the present invention is completed in this way.
[0022]
Next, a horizontal second support shaft groove 19 corresponding to the first support shaft groove 15 of the support shaft is formed on the surface (the back side surface in FIG. 5) that becomes the cylindrical inner surface after the first cylindrical plate 18 is bent. This is the third step of the method of the present invention.
[0023]
In order to form the second support shaft groove 19, for example, a wedge-shaped tool whose edge portion has a curvature radius similar to that of the second support shaft 19 is pressed to a predetermined portion of the first tube plate 18, or Alternatively, it is efficient to use plastic working such as striking.
[0024]
Note that the second support shaft groove 19 is not necessarily formed by plastic working, and may be formed by milling, for example.
[0025]
As shown in FIGS. 5 and 6, the position of the second support shaft groove 19 in the cylindrical axis direction is a state in which the first tube plate is formed into a cylinder and the support shaft 1 is fitted at a predetermined fitting depth. The position of the first support shaft groove 15 or the retaining ring 16 of the support shaft in FIG.
[0026]
In addition, the cross-sectional shape of the second support shaft groove 19 is semicircular like that of the first support shaft groove 15.
[0027]
The cross-sectional shape of the first and second support shaft grooves 15 and 19 is a semicircular shape slightly larger than the radius of the retaining ring 16 because the retaining ring 16 fitted into these has a circular shape. Needless to say, the retaining ring 16 should be formed into a rectangular shape if the cross-sectional shape is rectangular, and a V shape if the retaining ring 16 is diamond-shaped.
[0028]
In the embodiment shown in FIG. 5, a third support shaft groove 21 is formed below the second support shaft groove 19. As shown in FIG. 6, the third support shaft groove 21 is fitted into the third support shaft groove 21. Although the lower end of the support shaft 1 is supported by the retaining ring 16, the third support shaft groove 21 is not an essential configuration of the present invention.
[0029]
When the third step is finished, as shown in FIG. 7, the side edge of the first tube plate 18 is formed so that the second support shaft groove 19 is on the inside, and the cross-sectional shape is substantially semicircular. The retaining ring 16 of the support shaft 1 is fitted into the second support shaft groove 19 inside.
[0030]
Then, the first vane plate 2 and the first tube plate 18 connected to the first blade plate 2 are bent in the counterclockwise direction in FIG. 7 so as to enclose the support shaft 1, and the first tube plate 18 constitutes a cylinder. This time, the first blade 2 is bent back in the clockwise direction so that the extension of the first blade 2 passes through the central axis of the support shaft 1 and the fourth step is completed.
[0031]
Depending on the structure of the attachment part of the anti-seismic hinge, it is not always necessary to bend the first blade 2 back in the clockwise direction so that the first blade 2 is parallel to the tangent of the cylinder that holds the support shaft. May be.
[0032]
In the illustrated embodiment, as shown in FIG. 6, a retaining ring 16 squeezed to a small diameter is inserted from the lower end opening of the cylinder formed by the first tubular plate 18, and this is fitted into the third spindle groove 21, The lower end of the support shaft 1 is locked to the retaining ring 16 to share the load of the support shaft 6 with the upper retaining ring, and a decorative plug 22 is press-fitted into the lower end opening of the cylinder.
[0033]
On the other hand, as a fifth step of the method of the present invention, as shown in FIG. 6, a ring-shaped protrusion 23 having a semicircular cross section is formed on the outer peripheral surface of the short cylindrical lid plug 12.
[0034]
If the curvature radius of the protrusion 23 is the same as that of the retaining ring 16, a lid plug groove machining tool described later can be used in common with the tool for machining the second spindle groove 19.
[0035]
Next, as in the second step, as shown in FIG. 8, the second blade plate 4 having a plurality of mounting screw holes 17, 17 and the side edge of the second blade plate 4 are integrated. The second raw material plate 25 having the second tube plate 24 which is bent and formed so as to have a substantially circular cross section and becomes the guide tube 3 is manufactured as a sixth step of the method of the present invention.
[0036]
The second material plate 25 has an opening edge on the side into which the countersunk screw of the screw hole 17 is screwed if necessary after cutting out the outer shape by, for example, shearing and opening the plurality of screw holes 17 and 17 by punching. And mold with a dish.
[0037]
Further, the other end of the surface of the second material plate 25 which is the inner surface of the guide cylinder after bending (the front surface in FIG. 8) opposite the one end facing the first blade 2 (in FIG. 8). A horizontal lid plug groove 26 corresponding to the protrusion 23 of the lid plug 12 is formed in the upper end portion, and a stop groove 27 is formed in the center portion, which is the seventh step of the present invention.
[0038]
Similarly to the fifth step, the side edge of the second tube plate is formed so that the cross-sectional shape is substantially semicircular (see FIG. 7), and the lid plug groove is formed in the semicircular lid plug groove on the inner surface. The second cylindrical plate 24 is bent and formed into the guide tube 3 so as to wrap the lid plug, and the second vane plate 4 is further bent back so as to be second. The extension of the slats is shaped so as to pass through the central axis of the guide tube, which is the eighth step of the method of the present invention.
[0039]
In this eighth step, depending on the structure of the anti-seismic hinge mounting part, it is not necessary to bend back the second blade, and it may be bent so that the second blade 4 faces the tangential direction of the guide tube 3. good.
[0040]
Furthermore, the compression coil spring 7 (see FIG. 6), the stepped load plug 5 and a part thereof open from the opening at one end of the guide tube 3 whose other end is closed by the lid plug 12, and are substantially C-shaped. The load plug retaining ring 28 (not shown) is pushed into the guide tube.
[0041]
When the load plug retaining ring 28 reaches the lid plug groove 26 through the guide tube 3, the lid plug retaining ring 28 that has been compressed until then is expanded by elasticity and fitted into the retaining groove 27.
[0042]
At this time, when the outer diameter of the load plug retaining ring 28 is set to be slightly larger than the retaining groove 27 in the guide tube 3 in a natural state, the load plug retaining ring 28 is fitted into the lid plug groove 27. When both are firmly joined.
[0043]
As shown in FIG. 6, the first and second blades 2 and 4 manufactured as described above are arranged such that, for example, the first blade plate 2 is disposed downward and the second blade plate 4 is disposed upward. 1 is inserted into the guide tube 3 from below.
[0044]
In this state, the first blade 2 is screwed to the door frame and the second blade 4 is screwed to the door, and the door is supported on the door frame via the anti-seismic hinge.
[0045]
In this case, the shape and dimensions of each part are set so that a gap of, for example, about 8 to 9 mm is generated between the opening edge of the guide tube 3 and the opening edge of the cylinder that holds the support shaft 1. .
[0046]
In FIG. 6, reference numeral 29 denotes a decorative color for hiding the gap.
[0047]
The anti-seismic hinge manufactured as described above is similar to the conventional one in that the door load is applied to the second blade plate 4, the compression coil spring 7, the load plug 5, the support shaft 1 and the first blade plate 2. Via the door frame.
[0048]
The elastic force of the compression coil spring 7 carried by the pin for fixing the locking portion 6 and the lid plug 12 in the prior art is carried by the shear stress of the ridge 23 of the lid plug 12 and the load plug retaining ring 28.
[0049]
Further, the load of the door carried by the support shaft 1 and the welded portion of the cylinder that holds the spindle 1 is carried by the shearing stress of the retaining ring 16.
[0050]
In the manufacturing method of the anti-seismic hinge according to claim 3 , the first lid plug groove is formed at a position where the protrusion 23 on the outer peripheral surface of the lid plug 12 is to be formed, and a retaining ring is fitted to the groove (not shown). 3) Only the points are different, and the other steps are the same as those of the second aspect , and thus further detailed description is omitted.
[0051]
【The invention's effect】
As is apparent from the above description, in the present invention, the second support shaft groove is formed in the cylinder holding the first support shaft, and the retaining ring fitted to the support shaft is inserted into the second support shaft groove. Since the load of the support shaft is supported by the shearing stress of the retaining ring, the welding work that has been conventionally required can be replaced with plastic working, and not only the manufacturing is facilitated, but also the strength is remarkably improved.
[0052]
Also, it is necessary in the past because the shape of the lid plug ridge and lid plug groove, and the load plug retaining ring and retaining groove are engaged, and the elasticity of the compression coil spring is supported by the shear stress of the ridge and retaining ring. The conventional boring and drilling can be replaced with plastic working, which not only facilitates manufacturing but also significantly improves strength.
[0053]
Furthermore, since the plate material is not thinned by boring, the thickness of the material can be reduced.
[0054]
In addition, since all the joints between the groove and the retaining ring are hidden in the cylinder, the appearance of the manufactured anti-seismic hinge is improved in combination with the fact that welding of the support shaft is no longer necessary. According to estimates by humans and the like, there are various effects such as a reduction in manufacturing cost of the anti-seismic hinge by 50% or more.
[Brief description of the drawings]
FIG. 1 is a partial cross-sectional front view showing an example of the structure of a conventional anti-seismic hinge.
FIG. 2 is a diagram for explaining interference between a door and a door frame, and shows a case where a support shaft operates in a direction of being extracted from a guide tube.
FIG. 3 is a diagram for explaining interference between a door and a door frame, and shows a case where a support shaft operates in a direction of pushing a load plug into a guide tube.
FIG. 4 is a plan view of a first vane and a spindle-carrying cylinder.
FIG. 5 is a plan view showing a first material plate and a support shaft side by side.
FIG. 6 is a partial cross-sectional front view of an anti-seismic hinge manufactured by the method of the present invention.
FIG. 7 is a plan view for explaining a fourth step of the present invention.
FIG. 8 is a plan view of a second material plate.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Support shaft 2 1st blade 3 Guide tube 4 2nd blade 5 Load plug 7 Compression coil spring 12 Cover plug 13 Steel ball 14 First material plate 15 First support groove 16 Retaining ring 17 Screw hole 18 First tube Plate 19 Second support shaft groove 22 Decoration plug 23 Projection strip 24 Second tube plate 25 Second material plate 26 Cover plug groove 27 Stop groove 28 Load plug retaining ring

Claims (3)

The first tube plate connected to the side edge is formed into a cylinder, and the first blade plate having a support shaft fitted to the cylinder and the second tube plate connected to the side edge are formed into a cylinder. And a second plug that fits the molded guide tube to the support shaft. A load plug that comes into contact with the tip of the support shaft is slidably disposed in the guide tube. Is formed in the guide cylinder on the side opposite to the support shaft with respect to the load plug, and the load plug is attached to the lock portion. In the compression cylinder spring, the load in the axial direction of the support shaft is carried by the compression coil spring via the load plug. On the other hand, the opening of the guide cylinder on the opposite side of the compression coil spring from the load plug is closed by the lid plug. It is formed in a cylindrical inner peripheral surface of the first blade plate, the cross-sectional shape of the semicircular annular shaft groove , The first support shaft an annular groove cross-sectional shape formed on the support shaft outer peripheral surface in a semi-circular, the annular ridge formed by fitted a ring-shaped retaining ring partially open circular section On the other hand, a locking part is formed by fitting a ring-shaped retaining ring with a circular cross section and a part of the ring into a retaining groove that is semicircular in cross section formed on the inner peripheral surface of the guide cylinder. On the other hand, it is formed on the inner peripheral surface of the opening end portion of the guide tube, and is formed on the outer peripheral surface of the lid plug in the semicircular and annular lid plug groove, and engages with the annular protrusion having the semicircular cross section. Anti-seismic hinges, each of which has been provided with a stopper.   A first step of forming at least one ring-shaped first support shaft groove at a predetermined position of a support shaft embedded with a steel ball at the tip, and fitting a retaining ring into the first support shaft groove; A first material having a first blade plate having a hole and a first tube plate integrally connected to a side edge of the first blade plate and bent so as to have a substantially circular cross section. A second step of manufacturing a plate, a third step of forming a horizontal second support shaft groove corresponding to the first support shaft groove on a surface which becomes a cylindrical inner surface after bending of the first tube plate, Form the side edge of one tube plate so that the cross-sectional shape is almost semicircular, fit the retaining ring of the support shaft into the semicircular second support shaft groove on the inner surface, and then wrap the support shaft A fourth step of bending the first tube plate, a fifth step of forming a protrusion on the outer peripheral surface of the short cylindrical lid plug, and a second step of opening the mounting screw hole. Manufactures a second material plate having a root plate and a second tube plate that is integrally connected to a side edge of the second blade plate and is bent to have a substantially circular cross section to serve as a guide tube And the other end of the surface that becomes the guide cylinder inner surface after bending of the second cylinder plate, opposite to the one end facing the first blade, corresponds to the protrusion of the lid plug. A horizontal lid plug groove is formed in a seventh step of forming a stop groove in the center portion, and the side edge of the second tube plate is formed so that the cross-sectional shape is substantially semicircular, and the semicircular shape on the inner surface thereof An eighth step in which the guide tube is formed by bending the second tube plate so as to wrap the cover plug after the protrusion of the cover plug is fitted in the cover plug groove, and a compression coil spring from the opening end of the guide tube; Push the load plug and the load plug retaining ring, which is partially open, in a state where it is elastically deformed so that it has a small diameter. The plug retaining ring by expanding fitted into locking groove, a manufacturing method of Tai Sin hinge and having a ninth step of locking the load plug by the load plug snap ring into the guide tube. A first step of forming at least one ring-shaped first support shaft groove at a predetermined position of a support shaft embedded with a steel ball at the tip, and fitting a retaining ring into the first support shaft groove; A first material having a first blade plate having a hole and a first tube plate integrally connected to a side edge of the first blade plate and bent so as to have a substantially circular cross section. A second step of manufacturing a plate, a third step of forming a horizontal second support shaft groove corresponding to the first support shaft groove on a surface which becomes a cylindrical inner surface after bending of the first tube plate, Form the side edge of one tube plate so that the cross-sectional shape is almost semicircular, fit the retaining ring of the support shaft into the semicircular second support shaft groove on the inner surface, and then wrap the support shaft And a fourth step of bending the first tube plate, a ring-shaped first lid plug groove is formed on the outer peripheral surface of the short cylindrical lid plug, and the first lid plug groove The fifth step of fitting the retaining ring, the second blade plate with the mounting screw hole opened, and the side blade edge of this second blade plate are integrally connected and bent so that the cross section is substantially circular. A sixth step of manufacturing a second material plate having a second tube plate that is molded to become a guide tube, and a surface that becomes the guide tube inner surface after bending forming of the second tube plate faces the first blade plate. A seventh step of forming a horizontal second lid plug groove corresponding to the first lid plug groove at the other end opposite to the one end, and a stop groove at the central portion; and a side end of the second tube plate The edge is formed so that the cross-sectional shape is almost semicircular, and the retaining ring fitted to the lid plug is fitted into the semicircular second lid plug groove on the inner surface, and then the lid plug is wrapped. Eighth step of bending the two cylinder plates to form the guide cylinder, and the compression coil spring, load plug and part from the open end of the guide cylinder The open load plug retaining ring is pushed in a state where it is elastically deformed to have a small diameter, and the load plug retaining ring is further expanded and inserted into the retaining groove. The load plug retaining ring engages the load plug in the guide cylinder. And a ninth method of stopping the manufacturing method of the anti-seismic hinge.

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