JPH0575381U - Pivot hinge - Google Patents

Abstract

(57) [Abstract] [Purpose] The pivot hinge facilitates the door installation work and prevents the door from being inadvertently removed by a tool when the door is closed. [Structure] Each protrusion 1 is provided at each end of the substrate 1a and the fixed plate 2a.
c and 2b are provided with a base plate 1 attached to a door attachment body 8 and an arm 2 attached to a door 10, respectively. The support shaft 3 which is erected on the upper surface of the protrusion 2b is engaged with the notch groove 1d formed in the protrusion 1c of the base plate 1. Both protrusions 1
The shaft stopper plate 6 is provided on the lower surface side of the protruding portion 1c between c and 2b.
The base 6a of the substrate 1a so that it can be rotated horizontally.
To support. Notch groove 6b is provided on the tip side of the shaft stopper plate 6.
Is formed symmetrically with the cutout groove 1d, and the shaft stopper plate 6 is fixed to the protruding portion 1c side by the fixture 12, so that the support shaft 3 is rotatably supported by the cutout groove 1d and the cutout groove 6b. .

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a pivot hinge used to pivotally attach an upper portion and a lower portion of a door to a door mounting body so as to be openable and closable.

[0002]

[Prior Art]

 As conventional pivot hinges, those shown in FIGS. 4 and 5 are known. In the case of the one shown in FIG. 4 (published in Japanese Utility Model Publication No. 2-1423), a notch b in an open state is provided on one side of the fixing plate a attached to the door mounting body, and the opening b is projected from the opening to the end of the door c. The fixed plate a is formed so that the fulcrum shaft d can be inserted, and the fixed plate a has a hook portion e having a hook shape at the swinging tip end and is formed in a strip plate shape. The stopper f is configured to be swingably supported.

In the one shown in FIG. 5 (Mae Doujinhei 2-1423), an arc-shaped bending piece g is formed at the tip of a fixing plate a attached to a door mounting body, and the bending piece g is formed. In the bent portion of the door c, a notch h into which the fulcrum fulcrum shaft d can be removably inserted is protrudingly provided, and swings around the pivot axis i in the vicinity of the base end of the fixing plate a. A stopper j is provided, and a tongue piece k that is curved along the bending piece g and is erected in a direction opposite to the bending piece g is provided at the swinging tip end of the stopper j. The tongue piece k is brought into proximity to the inside of the bending piece g by rotating the bending piece g side.

[0004]

[Problems to be solved by the device]

 However, in the former case of FIG. 4, the attachment / detachment operation of the door c with respect to the door mounting body is easy, but the fixed plate a is deformed in the vertical direction by the weight of the door c and the external force applied in the vertical direction of the door c. In this case, the fulcrum shaft d may fall off the fixed plate a, which is not only dangerous, but also the fixed plate a and the stopper f may be deformed in the vertical direction from the outside. Even if the fixing plate a and the stopper f are not removed, there is a risk that the door c is unintentionally removed in the closed state.

In the latter case of FIG. 5, the door c is placed on the fixed plate a in a temporarily fixed state when the stopper j is not closed when it is used for attaching the door c to the lower part. In addition, when it is used for mounting the top of the door c, it cannot be held unless the door c is opened 180 ° or more, and in any of the above cases, it becomes unstable. Since the door c must be temporarily held manually, the workability of mounting the door is poor.

[0006] Further, when the weight of the door c or an external force in the vertical direction on the door c is applied, and thereby the fixing plate a is deformed in the vertical direction, the fulcrum axis d moves more than the fixing plate a does. Since the fixing plate a and the stopper j can be deformed in the vertical direction from the outside, there is a risk that the fixed plate a and the stopper j will be opened unintentionally even in the closed state.

In view of the above problems of the conventional pivot hinge, the present invention provides a door mounting body according to claim 1, in which a support shaft erected on an upper surface of a protruding portion of an arm attached to the door side is erected. A protrusion of the base plate, which is attached to the base plate, is rotatably engaged with a notched groove that is open to one side and is not provided, and the base plate is inserted between the protrusions. A shaft stopper plate having a cutout groove symmetrically formed with the cutout groove on the lower surface of the protruding portion of the shaft is opened rotatably in the horizontal direction. By fixing the shaft with the notch groove so that it can rotate freely from both sides, the door mounting work is easy, and when the door is closed, the shaft stop plate Is hidden between the base plate and the arm. This makes it impossible to remove the fixing tool that secures the shaft stopper plate, which prevents the base plate, the shaft stopper plate, and the support shaft from being ejected, thus completely preventing unintentional opening of the door. It is trying to prevent and provide something that is highly reliable in crime prevention.

According to a second aspect of the present invention, in the first aspect of the present invention, by forming the retaining head on the support shaft, the support shaft is prevented from being pulled out, and the door mounting work is facilitated, and the crime prevention effect is provided. We are also trying to improve

[0009]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention provides a door mounting body, wherein a substrate is connected to a mounting plate that can be attached to a door mounting body, and a protrusion is provided at the tip of the substrate. A base plate is provided with a notch groove that opens from the central part to a side closer to the board, and a fixing plate that is attachable to the door has a protrusion at the tip, and a spindle is set upright on the upper surface of the protrusion. With the arm provided, the support shaft is engaged with the notch groove in the protruding portion of the base plate by inserting it laterally from the opening in a state in which the protruding portion is vertically opposed to both of these protruding portions. A notch groove, which is free and is symmetrical between the above notch groove and the central part near the tip, opens to the base part side between the two protruding parts. The shaft stopper plate that is It is arranged so that it can rotate in any direction, and the supporting shaft is engaged with the notch groove so that the shaft stopper plate can be fixed by a fixing tool. The purpose of the present invention is to provide a pivot hinge, which is pivoted so as to be rotatable from both sides by means of both notch grooves.

Further, according to a second aspect, a large-diameter head for retaining is provided at the tip of the support shaft in the first aspect, and the support shaft has a protrusion of the base plate and a shaft stopper. The content is the addition of a structure that does not allow axial escape from both notch grooves of the plate.

[0011]

[Action]

 First, on the lower surface of the protruding portion of the base plate, the base end of the shaft stopper plate is rotatably supported on the substrate side so as to be horizontally rotatable by using a screw or the like. At this time, the notch groove of the shaft stop plate is pivotally supported so that the notch groove of the shaft stop plate faces the opening of the notch groove formed in the protrusion. Next, the base plate is fixed on the inner surface of the vertical frame of the door mounting body, etc. by means such as screwing to the door suspension side so that the protruding portion protrudes forward, while the arm fixes the base plate. The plate is located on the end face of the door and fixed to the suspension base by fixing it with a screw, and the projecting portion is projected forward.

[0012] The shaft stopper plate is rotated inward by a required angle to the inside of the door mounting body, and the opening of the notch groove in the protruding portion of the base plate is opened. The shaft is rotatably fitted into the cutout groove in the protruding portion of the base plate.

According to the second aspect of the present invention, since the retaining shaft is provided on the support shaft, the cutout groove in the protruding portion of the base plate is opened from the opening on the side thereof to the support shaft. It will be inserted by shifting the sideways.

As described above, the projecting portions of the base plate and the arm are opposed to each other in the upper and lower positions, but when the door is opened, the arm rotates, whereby the projecting portion of the base plate is rotated. Escape from the bottom surface of the protrusion. As a result, the shaft stopper plate on the lower surface of the protrusion is exposed.Therefore, by rotating the shaft stopper plate from the inside of the door mounting body to the outside, between the base plate and both the protrusions of the arm, The support shaft is received in the notch groove from the side opening and is rotatably engaged. In this state, if the shaft stopper plate is fixed to the lower surface of the protruding portion of the base plate by a fixing tool such as a screw, the door is completely attached.

The support shaft is clamped and supported from both sides by the notch groove in the protruding portion of the base plate and the notch groove in the shaft stop plate, so that the support shaft rotates in the axial direction as the door is opened and closed. Even if it is done, it does not escape. Further, in the door closed state, the shaft stopper plate is hidden between the protruding portion of the base plate and the upper surface of the protruding portion of the arm, so that it is not possible to remove the fixing tool such as a screw with a tool when closing the door. Therefore, since the shaft stopper plate cannot be rotated, the danger that the support shaft will be detached from the base plate and the door will be opened when the door is closed is eliminated.

Further, in claim 2, when the weight of the door or an external force in the vertical direction is applied to the door to bend the protruding portion of the base plate or the protruding portion of the arm in the vertical direction, or both the protruding portions are intentionally Even if it is deformed in the vertical direction, it has a retaining head at the upper end of the support shaft that has a diameter larger than the width of the two notched grooves, so that it does not interfere with both the base plate and the shaft stopper plate. The engagement between the notch groove and the support shaft cannot be removed, and the danger that the support shaft is removed when the door is closed and the door is opened unintentionally is also prevented.

[0017]

【Example】

 The present invention will be described below with reference to the illustrated embodiments. In the pivot hinge according to claim 1, as shown in FIGS. 1 to 3, the base plate 1 which is the first member includes a base plate 1a and a mounting plate 1b bent downward from one side thereof at a right angle. As a result, the protrusion 1c is formed in a substantially inverted L shape on the front and extends horizontally from the substrate 1a to the front. The protrusion 1c has a cutout groove 1d for engaging the spindle. The protrusion 1c is vertically penetrated from the central portion in the vicinity of the tip to the substrate 1a side, and the opening 1e is opened on one side opposite to the mounting plate 1b.

Next, the arm 2, which is the second member, is formed into a substantially L-shaped plane by bending the protruding portion 2b from one end of the fixed plate 2a to the front at a right angle, and is formed on the upper surface of the protruding portion 2b. The support shaft 3 is erected so as to correspond to the inner end portion 1f of the cutout groove 1d formed in the protruding portion 1c of the base plate 1.

As shown in FIG. 2, the support shaft 3 has a columnar shape and has a flange 3b provided around a substantially middle portion and a base shaft 3c protruding downward from the flange 3b. A large diameter recess 2c and a through hole 2d at the center of the bottom of the recess 2c are formed in the upward and downward directions. The flange 3b and the base shaft 3c are fitted into these, respectively, and the lower end of the base shaft 3c is caulked. , Is fixed to the above-mentioned protruding portion 2b in an orthogonal state.

Further, according to claim 2, at the tip of the support shaft 3, a retaining head 3a is pulled out from the notch groove 1d described above and the notch groove 6b in the shaft stopper plate 6 described later. It is dimensioned to be in a stopped state and is integrally formed.

Further, in the illustrated arm 2, the cover 4 is fitted to the projecting portion 2b, and the cover 4 is integrally fastened with the screws 5, ..., By this, the lower surface of the projecting portion 2b And the surrounding surface is covered.

The shaft stopper plate 6 corresponding to the support shaft 3 is formed in substantially the same shape as the substrate 1a and the protruding portion 1c of the base plate 1, and is on the lower surface of the substrate 1a and the protruding portion 1c. By pivotally attaching the central portion of the base portion 6a side to the base plate 1a with screws 7 or the like, the shaft stopper plate 6 is pivotally supported so as to be rotatable in the horizontal direction as shown by arrows B⇔B 'in FIG. Has been done.

A cutout groove 6b for engaging the support shaft is formed in the shaft stopper plate 6 in the vertical direction from the central portion near the tip to the base portion 6a side to the opening 6c on one side.

That is, the notch groove 6b can sandwich the support shaft 3 from both sides by the inner end portion 6d and the inner end portion 1f of the notch groove 1d formed at the protruding portion 1c of the base plate 1. Therefore, the base plate 1 is formed so as to have the opening 6c in the direction opposite to the cutout groove 1d. Then, with the support shaft 3 engaged in the notch groove 1d in the protrusion 1c of the base plate 1, the shaft stopper plate 6 is rotated about the screw 7 in the direction of arrow B'shown in FIG. The spindle 3 can be engaged with the notch groove 6b, and therefore the notch groove 6b is provided on the virtual circumferential line centering on the screw 7.

To use the pivot hinge having the above structure, the door is pivotally attached to the door mounting body by the following work. First, in the base plate 1, as shown in FIGS. 1 to 3, with the substrate 1a abutted against the inner surface of the upper horizontal frame 8a of the door mounting body 8, the mounting plate 1b is attached to the inner surface of the vertical frame 8b of the door mounting body 8. It is fixed by means of screws 9 ... At this time, the projecting portion 1c is made to project forward, and of course, the base plate 1 is fixed to the door suspension side of the door mounting body 8.

On the other hand, with respect to the arm 2, its fixing plate 2a is located on the upper end surface 10a of the door 10 as shown in the drawing, and is fixed to the suspension side by screws 11 ... Although it is projected in the direction, the shaft stopper plate 6 pivotally supported on the lower surface of the protruding portion 1c of the base plate 1 is rotated in the direction of arrow B in FIG.

Next, the support shaft 3 having the door 10 and erected on the arm 2 is inserted into the notch groove 1d in the projecting portion 1c of the base plate 1, and the support shaft 3 is located at the tip thereof. Since the diameter of the retaining head 3a is set so as to prevent it from coming off with respect to the cutout groove 1d, the spindle 3 can be inserted into the cutout groove 1d from the tip end side thereof. This cannot be done, and the transition from the opening 1e to the inner end 1f is made by shifting in the lateral direction orthogonal to the axial direction.

In this way, when the support shaft 3 is engaged with the cutout groove 1d in the protruding portion 1c of the base plate 1, the protruding portions 1c and 2b of the base plate 1 and the arm 2 face each other in the vertical arrangement. Next, when the door 10 is rotated in the direction of the arrow c shown in FIG. 3, the door 10 is opened as indicated by the chain double-dashed line in FIG. The shaft stopper plate 6 is exposed by escaping from the back side of the substrate 1a and the protruding portion 1c of the base plate 1 to the outside.

Further, by rotating the shaft stopper plate 6 in the direction of arrow B ′ shown in FIG. 3, the support shaft 3 is engaged from the opening 6c of the cutout groove 6b to the inner end 6d, and in this state. Then, the shaft stopper plate 6 is fixed to the lower surface of the protruding portion 1c of the base plate 1 by a fixing tool 12 such as a screw, and the mounting of the door 10 is completed.

Further, since the cutout groove 1d in the protruding portion 1c of the base plate 1 is opened from the central portion in the vicinity of the front end of the protruding portion 1c to one side on the base portion 6a side, the notch groove 1d is formed in the cutout groove 1d. When the support shaft 3 is engaged, it is only necessary to open the door 10 from the position shown by the solid line in FIG. 3 in the direction of the arrow c shown in the figure by about 45 °.

In this embodiment, the mounting plate 1b is bent downward so as to fix the base plate 1 to the inner surface of the vertical frame 8b of the door mounting body 8. However, like the arm 2, It may be formed in a substantially L shape in a plane and fixed to the inner surface of the upper horizontal frame 8a of the door mounting body 8.

[0032]

[Effect of the device]

 Since the present invention is configured as described above, in the present invention, it is provided on the protruding portion of the base plate and the shaft stopper plate rotatably supported on the lower surface of the protruding portion. By sandwiching the support shaft in both notch grooves, the support shaft can be easily supported, which facilitates the door installation work, and when the door is closed, the shaft stopper plate is used. Since it is completely hidden by the protruding part of the arm, it is impossible to remove the fixing tool such as the screw of the shaft stop plate even with a screwdriver or other tools. It is possible to eliminate the danger that the door will be opened due to detachment.

Further, according to claim 2, since the retaining head is formed at the tip of the support shaft, the weight of the door or a vertical external force applied to the door causes the base plate to move. Even if the protruding portion and the shaft stopper plate are deformed in the vertical direction, or if the protruding portion and the shaft stopper plate are intentionally deformed in the vertical direction, the support shaft may escape in the axial direction. Therefore, it is possible to completely prevent the involuntary opening of the door and provide a highly reliable product for crime prevention.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a pivot hinge according to the present invention.

FIG. 2 is a vertical cross-sectional view of the same embodiment as the above, which is attached to a door.

FIG. 3 is a sectional view taken along the line AA ′ in FIG.

FIG. 4 is a plan view showing a conventional example of a pivot hinge.

FIG. 5 is a perspective view showing another conventional example of the pivot hinge.

[Explanation of symbols]

 1 Base Plate 1a Substrate 1b Mounting Plate 1c Base Plate Projection 1d Notch Groove 6b Notch Groove 2 Arm 2a Fixed Plate 2b Arm Projection 3 Support Shaft 3a Detent Head 6 Shaft Stop Plate 6a Base 8 Door Mount 10 Door 12 Fixture

Claims (2)

[Scope of utility model registration request] 1. A board is continuously provided on a mounting plate which can be attached to a door mounting body, and a projecting portion is provided at a tip of the board, and the projecting portion has one side on the board side from a central portion near the tip. The base plate is provided with a notch groove that opens toward the door, and a fixed plate that is attachable to the door is provided with a protrusion at the tip of the fixed plate. In a state where they are arranged to face each other vertically, the support shaft is engageable by being inserted laterally from the opening into the notch groove in the protruding portion of the base plate, and between the both protruding portions, On the lower surface of the protruding portion of the base plate, a shaft stopper plate is provided which has a cutout groove that is open from the central portion near the tip to one side of the base portion and is symmetrical to the cutout groove. It is arranged so that it can rotate in the horizontal direction, The shaft is engaged with the cutout groove so that the shaft stopper plate can be fixed by a fixing tool, whereby the support shaft is axially referred to so as to be rotatable from both sides by the cutout grooves. Pivot hinge. 2. A board is continuously provided on a mounting plate which can be attached to a door mounting body, and a projecting portion is provided at a tip of the board, and the projecting portion has one side on the board side from a central portion near the tip. The base plate is provided with a notch groove that opens toward the door, and the fixing plate that is attachable to the door is provided with a projecting portion at the tip, and on the upper surface of the projecting portion, a retaining head is provided on the tip side. The support shaft is provided with an upright arm, and the support shaft is inserted laterally into the notch groove in the protruding portion of the base plate from the opening in a state in which both the protruding portions are vertically opposed to each other. A notch groove, which is engageable and is provided between the two protrusions, is provided on the lower surface of the protrusion of the base plate, the notch groove opening from the central portion near the tip to one side of the base and symmetrical to the notch groove. The shaft stop plate that is installed is horizontally supported with its base end pivotally supported. The shafts are arranged so as to be rotatable in the same direction, and the shafts are engaged with the cutout grooves so that the shaft stopper plate can be fixed by a fixing tool. A pivot hinge that is axially named so that it can rotate from both sides.