JP4567033B2 - Upper hinge device of pivot hinge - Google Patents

Description

  The present invention is a pivot hinge that pivots on a door frame by pivot shafts provided in upper and lower hinge devices and suspendably pivots on a door frame. In particular, the upper shaft portion of the upper pivot shaft is held. The present invention relates to an upper hinge device that guides opening and closing of the hinged door.

Conventionally, the hinges for hinged doors are mounted inconspicuously and have a good appearance, so that the hinged doors on the upper and lower hinge devices pivot on the hinged door so that the upper and lower corners of the door frame can be rotated. There are many so-called pivot hinges that hang on the part. As this type of pivot hinge, a cylindrical cam is used so that when the opening operation of the opening door is stopped halfway during opening, the opening door automatically rotates in the closing direction and returns to a predetermined return position. The gravity hinge type (see Patent Document 1) provided with the self-closing means provided in the lower hinge device, or the spring hinge type provided with the upper hinge device provided with self-closing means utilizing the torsional action of the torsion spring (not shown). Things are well known.
Japanese Utility Model Publication No. 61-137766

  However, in the conventional pivot hinge, when there is little clearance between the ceiling-side upper frame of the door frame and the opening door, even if you try to hang the opening door on the door frame at the construction site, The upper shaft part of the upper pivot shaft, which protrudes from the end face so as not to move up and down, becomes an obstacle, making it difficult to hang the open door on the door frame. there were.

  Therefore, in order to solve the above-described problem, the invention described in claim 1 is an open door D with pivot shafts 15 and 23 respectively provided in the upper and lower hinge devices H1 and H2, for example, as shown in the embodiments shown below. In the pivot hinge H pivotally supported and pivotally suspended in the door frame F, the upper end shaft portion 23a protrudes from the upper end surface 16 of the opening door D in the fixed cylinder 22 embedded in the opening door D. The upper pivot shaft 23 is inserted into the upper hinge device H1 that holds the upper end shaft portion 23a of the upper pivot shaft 23 and guides the opening and closing of the hinged door D. A bearing fitting 25 that holds the upper end shaft portion 23a of the upper pivot shaft 23 is fixed to be opposed to the upper end face 16 of the opening door D in the closed state, and the bearing fitting 25 has a tapered surface at the lower end. Protruding latch 35 with When the upper door shaft 23a abuts the tapered surface 17 when the hinged door D is suspended, the latch 35 is subjected to a spring biasing force. Then, the upper pivot shaft 23 is held in a return-restricted state by protruding again and engaging with the upper end shaft portion 23a.

  According to a second aspect of the present invention, in the upper hinge device of the pivot hinge according to the first aspect, for example, as shown in the embodiment shown below, the bearing fitting 25 is provided with a tightening screw 55 of the female screw hole 24. When it is screwed into such a screw hole, a latch presser 37 that presses against the latch 35 according to the screwing is provided, and when the upper pivot shaft 23 is held by locking the upper end shaft portion 23a to the latch 35. The latch presser 37 is pressed against the latch 35 to restrict the vertical movement of the latch 35.

  According to a third aspect of the present invention, in the upper hinge device of the pivot hinge according to the first or second aspect, for example, as in the illustrated embodiment shown below, the latch 35 is centered on an axis of the bearing bracket 25. On the other hand, the taper surface 17 is provided with a slit 17a for rotating operation, and the direction of the taper surface 17 is variable.

  According to a fourth aspect of the present invention, in the upper hinge device of the pivot hinge according to the third aspect, for example, as shown in the embodiment shown below, the bearing bracket 25 is provided with the shaft portion 45a of the pressing pin 45. A rotation prevention means 38 formed by winding a compression coil spring 46 is provided, and the rotation is stopped by pressing the head portion 45b of the pressing pin 45 against the latch 35 by being urged by the compression coil spring 36. It is characterized by.

  According to the first aspect of the present invention, when the upper pivot shaft comes into contact with the taper surface of the latch when the opening door is suspended, the upper door is retracted on the basis of the spring property of the urging spring, and then protrudes and latches again. The upper pivot shaft is locked to the upper pivot shaft and the upper pivot shaft is returned and held in a regulated state.Therefore, there is no gap between the opening door and the upper upper frame. Even if there is nothing, there will be no obstacle, and the opening door can be easily assembled to the door frame.

  According to the invention described in claim 2, when the upper pivot shaft is held by latching the upper end shaft portion with the latch, the latch presser is pressed against the latch to restrict the vertical movement of the latch. The latch and the upper end shaft portion that are locked do not come off due to impact, vibration, or the like, and the upper pivot shaft can be reliably held in the return restricted state and the hinged door can be suspended.

  According to the invention described in claim 3, after the screwing of the tightening screw into the screw hole is loosened, the pressing by the latch presser is released, and the latch can be moved up and down. If the latch is rotated by inserting it into the slot on the taper surface, the direction of the taper surface with respect to the upper pivot shaft can be changed by a simple external operation when the hinged door is suspended or removed from the door frame. it can.

  According to the fourth aspect of the present invention, the screwing of the tightening screw into the screw hole is loosened, the pressing by the latch presser is released, and the latch can be moved up and down, and then the upper end of the upper pivot shaft is When the shaft is engaged with or disengaged from the latch and the hinged door is suspended or removed from the door frame, the head of the locking pin is pressed against the latch to prevent the latch from rotating. As a result, the opening door can be easily and smoothly suspended and removed from the door frame without the upper end shaft portion of the upper pivot shaft being caught by the latch.

  Hereinafter, the best mode of the present invention will be described with reference to the drawings.

  FIG. 4 is a perspective view showing the periphery of the door in a state in which the opening door is suspended from the door frame by using the pivot hinge provided with the upper hinge device which is an example of the present invention. In the figure, reference numeral D denotes a rotary opening door, F denotes a door frame of the opening door D, and H denotes a pivot hinge. The pivot hinge H includes a lower hinge device H1 as a lower hinge portion and an upper hinge device H2 as an upper hinge portion. The lower hinge device H1 is assembled to the lower side between the open door D and the door frame F, The upper hinge device H2 is assembled on the upper side, and the opening door D is suspended from the door frame F so as to be rotatable.

  The lower hinge device H <b> 1 includes a support fitting 11 that is screwed to the floor B facing the ceiling-side upper frame portion 10 of the door frame F and a pivot fitting 12 that is screwed to the lower end surface of the opening door D. The support fitting 11 is formed by drilling a bearing hole 13 having a non-rotating hole shape in a slightly elongated plate-like bracket 11a. On the other hand, the pivot fitting 12 is inserted into the fixed cylinder 14 embedded in the lower end portion of the opening door D with the lower pivot shaft 15 having a lower end shaft portion 15a having the same detent shape as the hole shape of the bearing hole 13, The shaft portion 15 a is held by protruding from the lower end surface of the opening door D. When the lower hinge 15a of the lower pivot shaft 15 on the pivot fitting 12 side is fitted into the bearing hole 13 of the support bracket 11 fixed on the door frame F side and assembled, the lower hinge device H1 is centered on the pivot shaft 15. It is the structure which pivotally supports the opening door D so that rotation is possible. Although not shown in the figure, a braking means such as an oil damper mechanism that decelerates the opening door D by applying a braking force when the opening door D rotates in the closing direction is provided in the fixed cylinder of the pivot fitting 12. It has been incorporated.

  On the other hand, as shown in FIGS. 1 to 3, the upper hinge device H <b> 2 is composed of a pivot fitting 20 that is assembled on the side of the opening door D and a bearing fitting 25 that is assembled on the side of the door frame F.

  The pivot fitting 20 has a fixed cylinder 22 fixedly attached to one end of a slightly elongated mounting plate 21 having a plurality of screw holes, and an upper pivot shaft 23 is inserted into the fixed cylinder 22 through an upper end opening. The upper pivot shaft 23 is inserted while being prevented from coming off in the vertical direction at an insertion position where the upper end shaft portion 23a protrudes a predetermined length from the upper end opening. The upper pivot shaft 23 is formed with an upper end shaft portion 23a in a non-rotating shape provided with a pair of symmetrical circular arc surfaces and a plane on the outer periphery, and the pair of planes are oriented in parallel with the length direction of the mounting plate 21. As described above, the positioning is held in the fixed cylinder 22. Therefore, the upper hinge device H2 incorporates a torsion spring (not shown) in the fixed cylinder 22 of the pivot fitting 20 and holds one end of the torsion spring on the pivot shaft 23, and the other end on a part of the fixed cylinder 22. When it is opened, when the opening operation of the opening door D is stopped halfway, the opening door D is automatically rotated in the closing direction by the spring return force of the torsion spring. Self-closing means for returning to the return position is configured. The pivot fitting 20 having such a structure embeds and embeds the fixed cylinder 22 in the mounting cylinder hole opened near the upper end corner of the opening door D, and screws the mounting plate 21 onto the upper end surface 16 to open the opening door. It is assembled to D.

  The bearing bracket 25 forms a bracket main body 30 by two bodies of a bearing base member 26 and an attachment piece member 27, and a latch 35, an urging spring 36, a latch presser 37, and a rotation stopper 38 are assembled to the attachment piece member 27. It is configured to be fixed to the upper frame portion 10 of the door frame F via a slightly elongated rectangular metal spring retainer plate 39.

  The bearing base member 26 of the metal fitting body 30 is made of a hardened and tempered sintered alloy and is formed in a slightly elongated rectangular thick plate shape. The pair of screw insertion holes 28 and 28 and a female screw hole 29 between them are formed, and in the length direction. At one end, a bearing recess 26a for engaging the upper end shaft portion 23a of the upper pivot shaft 23 is provided by cutting it into a rectangular shape.

  On the other hand, the mounting piece material 27 is made of zinc die casting and is formed in a substantially elongated substantially rectangular shape as a whole, and female screw holes 18, 18, 19 are formed at positions corresponding to the holes 28, 28, 29 of the bearing base material 26 in the upper and lower thicknesses in the figure. While being penetrated in the vertical direction, a fitting recess 27a is provided on the lower surface in the drawing in accordance with the outer shape of the bearing base member 26, while the upper surface is also provided with a fitting recess in accordance with the outer shape of the spring retainer plate 39. 27b is provided. Further, at one end in the length direction, a lower corner edge 27c in the drawing is obliquely cut out to form an annular fitting hole 32, and an inner circumference is formed around the center of the bottom of the fitting hole 32. A threaded cylindrical portion 27d having a female threaded hole 24 is projectingly formed, and a guide hole 33 penetrating in the thickness direction is formed next to the fitting hole 32. Further, the guide hole 33 has a female threaded hole. A part of the 18 side is notched and a notched hole 34 is provided. The cutout hole 34 is internally threaded with a part of its inner wall. The guide hole 33 includes a cylindrical hole-shaped latch hole 33a and a spring accommodating hole 33b having a cylindrical hole shape whose diameter is one step larger than that of the latch hole 33a. The latch hole portion 33a is formed by cutting away a part of the screw tube portion 27d side near the lower end of the hole in the drawing and continuing to the adjacent fitting hole portion 32.

  The latch 35 is made of zinc die casting and has a tapered surface 17 at the lower end in the figure, while a spring insertion concave portion 35a is formed at the upper end in the axial direction from the upper end surface, and an annular retaining collar portion 35b is provided at the outer peripheral edge. Is provided. Further, the taper surface 17 is provided with a slit 17a crossing the taper surface 17, and on the outer peripheral surface, pressing surfaces 41 and 42 each formed of a circular arc surface are formed at symmetrical positions in the vertical direction in the figure. Become. The biasing spring 36 is composed of a compression coil spring. The latch presser 37 is made of zinc die casting, and is formed in a circular cap shape by providing a screw insertion hole 37a penetrating in the center and forming a fitting concave portion 37b on one side of the fitting portion 37b in accordance with the screw cylinder portion 27d. The rotation preventing means 38 is formed by winding a compression coil spring 46 having a small diameter around a shaft portion 45 a of a metal pressing pin 45.

  Therefore, the bearing bracket 25 is configured to push the latch 35 having one end of the spring in the spring insertion recess 35a and the urging spring 36 attached thereto into the latch hole 33a from the spring accommodation hole 33b. While the surface 41 faces the fitting hole 32 side, the pressing surface 42 is inserted into the guide hole 33 toward the notch hole 34 side. In the notch hole portion 34 of the guide hole 33, a rotation preventing means 38 is inserted, and the head 45b of the pressing pin 45 is abutted against the pressing surface 42 of the latch 35 at the bottom of the hole. After the spring retainer plate 39 is fitted in the recess 27b, the retainer screw 50 is screwed into the notch hole portion 34 through the screw insertion hole 39a to fix the spring retainer plate 39, and is restrained by the retainer screw 50 to prevent rotation. The means 38 is mounted on the bottom of the notch hole 34, and the latch 35 is urged by the compression coil spring 46 to press it from one side, while the urging spring 36 is pushed from above by the spring retainer plate 39 to prevent the retaining collar portion. 35b is pressed against the stepped portion between the latch hole 33a and the spring accommodating hole 33b, and the latch 35 is incorporated into the guide hole 33 so as to be able to protrude and retract up and down in the drawing and to be rotatable around the axis. On the other hand, the screw cylinder portion 27d is engaged with the fitting hole portion 32 and the latch presser 37 is fitted into the fitting recess 37b, and then the tightening screw 55 is screwed into the female screw hole 24 of the screw cylinder portion 27d. Then, the latch presser 37 is fastened and the latch presser 37 presses the latch 35 from the other side to restrict the vertical movement. Then, in the bearing fitting 25, the mounting piece material 27 is fitted into the fitting concave portion 27a with the bearing concave portion 26a facing the latch 35 side, and the fastening screw 60 is passed through the screw insertion hole 39b of the spring retainer plate 39, so that the female screw hole 19 · The mounting piece material 27 and the bearing base material 26 are integrally fastened and assembled.

  In the upper hinge device H2, the bearing bracket 25 is configured so that the latch 35 faces the one side vertical frame portion 65 and the set screw 70 is screwed into the female screw holes 18, 28, 18 and 28 to thereby form the upper frame portion of the door frame F. 10 is fixed to the other vertical frame 66 side.

  Now, when the opening door D is suspended from the door frame F by the pivot hinge H configured as described above, in the bearing bracket 25 of the upper hinge device H2, the screw thread portion 27d of the tightening screw 55 is previously screwed into the female screw hole 24. Loosening is performed, the pressing by the latch presser 37 is released, and the latch 35 is placed in a state where it can be moved up and down. On the other hand, the latch 35 can move up and down at this time, but the head portion 45b of the pressing pin 45 of the detent means 38 comes into contact with the pressing surface 42 from one side, and the direction of the tapered surface 17a is displaced. There is a state that is prevented from rotating.

  Thereafter, the opening door D is lifted, and the lower end shaft portion 15a of the lower pivot shaft 15 of the pivot fitting 12 is fitted into the bearing hole 13 of the support fitting 11 of the lower hinge device H1 as shown in FIG. The lower door device H1 supports the door D by assembling it on the floor surface B so as to be rotatable.

  Then, while supporting the lower hinge device H1 and standing the opening door D, as shown in FIG. 6, in the upper hinge device H2, the upper end shaft portion 23a of the upper pivot shaft 23 on the pivot fitting 20 side is connected to the bearing bracket 25 side. As shown in FIG. 7, when the upper end shaft portion 23 a comes into contact with the tapered surface 17 of the latch 35 as shown in FIG. 7, the latch 35 once retracts against the biasing spring 36 along the tapered surface 17. As shown in FIG. 8, when the upper end shaft portion 23a is overcome, it protrudes again, and the upper pivot shaft 23 is held by engaging the upper end shaft portion 23a in the latch 35 and the bearing recess 26a. Next, the tightening screw 55 is screwed into the screw cylinder portion 27d by a plus driver 77, and the latch presser 37 is pressed against the pressing surface 41 to restrict the vertical movement of the latch 35. In this way, the door D is hung on the door frame F so as to be pivotable about the pivot shafts 15 and 23 by the vertical hinge devices H1 and H2.

  Therefore, when the opening door D is suspended, according to the upper hinge device H2, when the upper end shaft portion 23a of the upper pivot shaft 23 hits the taper surface 17 of the latch 35, the upper door device H2 is retracted based on the spring property of the biasing spring 36. In order to project again and engage the upper end shaft portion 23a with the latch 35 to hold the upper pivot shaft 23 in the return restricted state, the position where the opening door D is built is as shown in the figure as the upper frame of the opening door D and the door frame F. Even if there is almost no gap between the portions 10, there is no obstacle and the opening door D can be easily suspended.

  When the opening door D is used, the pivot hinge H can open the opening door D by pushing the opening door D against the spring return force of the torsion spring in the opening direction. On the other hand, when the opening operation of the opening door D is stopped halfway during opening, the opening door D can be automatically rotated in the closing direction by the spring return force of the torsion spring to return to a predetermined return position. At the same time, when the opening door D rotates in the closing direction in this way, the braking force of the braking means acts to decelerate the opening door D, and the opening door D strongly collides with a door contact portion such as the door frame F. Close slowly and quietly.

  On the other hand, when the opening door D is removed in the upper hinge device H2, the bearing fitting 25 of the upper hinge device H2 is attached to the female screw hole 24 of the screw cylinder portion 27d by the tightening screw 55 in the same manner as when suspended. After loosening the screw and releasing the pressing by the latch presser 37 so that the latch 35 can be moved up and down, for example, using a flathead screwdriver, this is inserted into the slot 17a of the taper surface 17, and the latch 35 is moved. The taper surface 17 is forcibly rotated 180 degrees, and the taper surface 17 is changed to face the upper end shaft portion 23 a of the upper pivot shaft 23. Then, holding the hinged door D, tilting it in the direction opposite to that when hanging, and when the upper end shaft portion 23a of the upper pivot shaft 23 engaged in the bearing recess 26a abuts against the taper surface 17 of the latch 35, the taper surface 17, the latch 35 retracts against the urging spring 36, and then protrudes again when it passes over the upper end shaft portion 23 a, and the engagement state between the upper end shaft portion 23 a and the latch 35 is easily released. Also at this time, the latch 35 can move up and down, but since the head 45b of the pressing pin 45 of the rotation preventing means 38 is pressed against the pressing surface 42 from one side and is prevented from rotating, the taper surface As a result, the upper pivot shaft 23 can be easily removed without the upper end shaft portion 23 a being caught by the latch 35. Therefore, thereafter, the hinged door D can be easily removed by lifting the hinged door D and extracting the lower end shaft portion 15a of the lower pivot shaft 15 of the lower hinge device H1 from the bearing hole 13 of the support fitting 11.

It is a longitudinal cross-sectional view which shows the upper hinge apparatus of the pivot hinge which is an example of this invention in an assembly state. It is a disassembled perspective view of the bearing bracket of an upper hinge apparatus. FIG. 3 is an exploded perspective view of a bearing fitting shown in a different angle from FIG. 2. It is a perspective view which shows the circumference | surroundings of the door of the state which suspended the open door on the door frame using the pivot hinge provided with the upper hinge apparatus of this invention. It is a perspective view of the surroundings of a door which shows the state which hangs an opening door on a door frame with an upper and lower hinge apparatus. It is an enlarged vertical sectional view showing a state in which the upper pivot shaft is brought close to the latch of the bearing fitting when the hinged door is suspended. It is an enlarged vertical sectional view showing a state where the upper end shaft portion of the upper pivot shaft is in contact with the taper surface of the latch. It is an enlarged vertical sectional view showing a state in which the upper end shaft portion of the upper pivot shaft gets over the latch and is locked.

Explanation of symbols

D Open door F Door frame H Pivot hinge H1 Lower hinge device H2 Upper hinge device 10 Upper frame portion 15 of the door frame Lower pivot shaft 15a Lower end shaft portion 16 Upper end surface of the hinge door 17 Tapered surface 17a of the latch Slot 20 Pivoting bracket 22 Fixed cylinder 23 Upper pivot shaft 23a Upper end shaft portion 25 Bearing bracket 35 Latch 36 Energizing spring 37 Latch retainer 38 Non-rotating means 45 Pressing pin 46 Compression coil spring 55 Tightening screw

Claims (4)

In a pivot hinge that pivotally supports an open door with pivot shafts provided respectively on the upper and lower hinge devices and is pivotably suspended from the door frame, an upper end shaft portion is disposed in a fixed cylinder embedded in the open door. An upper hinge device for inserting and inserting the upper pivot shaft in a state protruding from the upper end surface and holding the upper end shaft portion of the upper pivot shaft to guide opening and closing of the hinged door,
A bearing bracket that holds the upper end shaft portion of the upper pivot shaft is fixed to the upper frame portion of the door frame so as to face the upper end surface of the open door in a closed state, and the lower end of the bearing bracket is tapered to the lower end. A latch provided with a surface is spring-biased downward in the protruding direction and is provided so that it can move up and down,
When the hinged door is suspended, if the upper end shaft portion of the upper pivot shaft comes into contact with the tapered surface, the latch retracts against the spring biasing force, and then protrudes again and engages with the upper end shaft portion. An upper hinge device for a pivot hinge, wherein the upper pivot shaft is held in a return restricted state.   The bearing bracket includes a latch presser that presses against the latch according to the screwing when a tightening screw is screwed into the screw hole, and the upper pivot shaft is fixed to the latch by locking the upper end shaft portion. 2. The upper hinge device for a pivot hinge according to claim 1, wherein when holding, the latch presser is pressed against the latch to restrict the vertical movement of the latch.   2. The latch according to claim 1, wherein the latch is provided so as to be rotatable about an axis line, and the taper surface is provided with a slit for rotation operation so that the direction of the taper surface is variable. The upper hinge device of the pivot hinge according to claim 2   The bearing fitting is provided with a rotation preventing means formed by winding a compression coil spring around the shaft portion of the pressing pin, and is urged by the compression coil spring to press the head of the pressing pin against the latch. The upper hinge device of the pivot hinge according to claim 3, wherein the upper hinge device is prevented from rotating.

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