JPH094315A - Spring type door closer and door hinge device using the door closer - Google Patents

Abstract

PURPOSE: To provide a spring type door closer and a door hinge device using the door closer in which structure is relatively simple, and miniaturization can be enabled, and also when installed, exposed parts are little and its appearance is good. CONSTITUTION: In a spring type door closer, a turning shaft 4 whose both ends have been projected are turnably arranged inside a cylindrical body case 2, and a coil spring 8 is externally fitted on the circumference of the turning shaft 4, and also locking members 6, 7 are externally fitted to an upper part and a lower part of the turning shaft 4 respectively so as to be turnable in a range of a prescribed angle. An upper end of the coil spring 8 is fixed to the upper locking member 6, and a lower end of the coil spring 8 is fixed to the lower locking member 7. A locking pin 3b that has been projected to the inside from a fitting plate 3 for covering the upper part of a body case 1 is abutted on a locking part 6b of the upper locking member 6, and a locking pin 5b that has been projected from a bottom plate 5 of the body case 2 is abutted on a locking part 7b of the lower locking member 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spring door closer and a double door hinge device using the spring closer.

[0002]

2. Description of the Related Art As a door hinge device for supporting a door provided at an entrance of various stores, a top pivot device is embedded in a ceiling, a floor hinge is embedded in a floor, and a pivot shaft of the top pivot and a pivot shaft of the floor hinge are used. ,
A door hinge device is used to support the door.

[0003]

Although a door closer is generally provided in the floor hinge of the conventional door hinge device of this type to automatically close the opened door, the door is opened in both directions. For double doors,
There is a problem that the structure of the door closer becomes large and the manufacturing cost of the device becomes high. Further, this increases the overall size of the floor hinge, and when the floor hinge is actually buried in the floor, the cover panel of the floor hinge increases the area where the floor material such as tiles cannot be attached, and There was a problem of deteriorating the appearance.

Conventionally, there is a door hinge device such as a double door for sliding doors, which uses a spring type door closer. However, this type of conventional door closer has two coils because the door is tampered with on both sides. Since the springs are installed side by side, the shape is large and when mounted on the edge of the door,
There was a problem that the door closer protrudes and deteriorates the appearance.

The present invention has been made in view of the above points, has a relatively simple structure, can be downsized, and can be easily installed inside a door. An object of the present invention is to provide a door hinge device for a double door that uses a spring door closer and has a small number of parts and has a good appearance.

[0006]

In order to achieve the above object, the spring-type door closer of the present invention is configured such that a rotary shaft having a protruding tip is rotatably disposed in a cylindrical body case. A coil spring is fitted around the shaft, and locking members are fitted on the upper and lower parts of the rotary shaft so as to be rotatable within a predetermined angle range, and the upper end of the coil spring is fixed to the upper locking member. The lower end of the coil spring is fixed to the lower locking member, and the locking pin protruding inward from the mounting plate that covers the upper part of the body case contacts the locking part of the upper locking member. , The locking pin protruding from the bottom plate of the main body case abuts the locking portion of the lower locking member, and the locking pin protruding above the rotary shaft locks the upper locking member. And the locking pin protruding from the lower part of the rotary shaft contacts the locking part of the lower locking member. And it features.

[0007]

[Operation / Effect] Such a spring-type door closer is mounted by embedding its main body case in the upper or lower part of the door and fixing its mounting plate, and is mounted on the ceiling side or floor side facing the spring-type door closer. Is mounted by fitting and fixing the protruding tip of the rotating shaft to the receiving bracket.
used.

A spring-loaded door closer has a ring-shaped door closer 1
Since it is a simple structure that only attaches the coil spring and the locking member of the book and can be configured in a small size, it can be installed so as to be embedded inside a sliding door or door, the appearance is not conspicuous, and It can be effectively used for a door hinge device.

When the door is opened, for example, in the counterclockwise direction in a plan view, the main body case side is rotated together with the door in the same direction because the rotary shaft is fixed to the receiving metal fitting, so that the locking pin on the bottom plate becomes the same. Is rotated in the direction. Therefore, the locking pin pushes the locking portion to rotate the lower locking member in the counterclockwise direction, whereby the coil spring in the main body case is rotated in the same direction. At this time, since the upper locking member that locks the upper end of the coil spring abuts the locking pin of the rotary shaft and cannot rotate, the coil spring is twisted, and there is a direction to return the twist, that is, a plan view. A turning force is generated in the clockwise direction.

Therefore, when the door is opened counterclockwise,
The coil spring exerts a turning force in the direction of closing the main body case, that is, the door, and when a hand is released from the opened door, the door is rotated in the closing direction by its urging force.

On the other hand, when the door is opened clockwise in plan view,
In the state where the rotary shaft is fixed to the receiving metal fitting, the main body case side is rotated together with the door in the same direction, whereby the locking pin of the mounting plate is rotated in the same direction. Therefore, the locking pin pushes the locking portion to rotate the upper locking member in the clockwise direction, whereby the coil spring in the main body case is rotated in the same direction.

At this time, since the lower locking member with which the lower end of the coil spring is locked comes into contact with the locking pin of the rotary shaft and cannot rotate, the coil spring is twisted, and there is a direction to return the twist. That is, a turning force is generated counterclockwise in a plan view.

Therefore, when the door is opened in the clockwise direction, the coil spring exerts a turning force in the direction of closing the main body case, that is, the door. When the hand is released from the opened door, the door is rotated in the closing direction by its urging force. To do.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a vertical sectional view of a spring door closer 1. Reference numeral 2 denotes a cylindrical main body case, and a flange-shaped mounting plate 3 shown in FIGS. 2 and 3 is fixed to an upper portion of the main body case 2 so as to cover the upper portion of the case. A hole 3a through which the rotary shaft 4 is inserted is formed in the center of the mounting plate 3, and a locking pin 3b is provided near the hole 3a on the lower side, that is, the main body case 2
A plurality of fixing holes 3c are formed in the peripheral portion so as to project inward.

A rotary shaft 4 is rotatably arranged within a certain range in the central axis direction of the main body case 1. This rotating shaft 4
4, has an upper portion and a lower portion that are slightly narrower than the central portion, and has a taper portion 4a and a screw portion 4b at the upper end of the upper portion.
Is provided. Further, locking pins 4c and 4d are provided on the upper and lower parts of the rotary shaft 4 so as to project laterally, that is, in a direction perpendicular to the shaft.

A bottom plate 5 as shown in FIGS. 5 and 6 is fitted on the bottom of the body case 2. A recess 5a is formed in the center of the bottom plate 5, and the lower portion of the rotary shaft 4 is rotatably fitted in the recess 5a, and the rotary shaft 4 is rotatably supported. A locking pin 5b is provided on the bottom plate 5 so as to project into the body case 4.

Further, locking members 6 and 7 for coil springs as shown in FIGS. 7 to 10 are fitted on the upper and lower portions of the rotating shaft 4 having a small diameter so as to be rotatable within a predetermined angle range. . As shown in FIG. 8 showing a plan view, each of the locking members 6 and 7 has an arcuate portion substantially corresponding to the inner surface of the main body case 2 and a semi-annular portion continuous therethrough with a step portion, and has a rotating shaft. 4 can be externally fitted to the upper and lower parts, and the lock pins 3b, 4c, 4d, 5
It is formed so that b may contact.

That is, the rotary shaft 4 is provided at the center of the locking members 6 and 7.
Holes 6a, 7a through which the locking pins 6b, 4c, 4d, 5b are locked on the left and right sides thereof.
7b is formed. Further, locking holes 6c and 7c for stopping the tip and the lower end of a coil spring 8 described later are formed on the bottom surface side thereof.

As shown in FIG. 1, the locking member 6 having such a structure is rotatably fitted to the upper part of the rotary shaft 4 as it is, and the other locking member 7 is turned upside down. In this state, the lower part of the rotary shaft 4 is rotatably fitted. A left-handed coil spring 8 is externally fitted around the rotary shaft 4, the upper end of the coil spring 8 is fitted in the locking hole 6c of the locking member 6, and the lower end thereof is the locking hole of the locking member 7. 7c is fitted.

At this time, the coil spring 8 is assembled around the rotary shaft 4 in a state in which a biasing force is generated slightly to the right in the direction opposite to the twist direction, and the upper and lower ends of the spring are attached to the upper and lower locking members 6, respectively.
7 is fitted and attached. At this time, as shown in FIG. 1, the locking pin 4c on the rotating shaft 4 side is brought into contact with and locked by the locking portion 6b of the locking member 6, and the lower locking pin 4d is locked by the locking member. 7 is abutted against the locking portion 7c of 7 and locked.

Further, when the rotary shaft 4, the locking members 6 and 7, and the coil spring 8 are inserted into the main body case 2, the locking pin 3b on the mounting plate 3 side locks the locking member 6. Part 6
The bottom plate 5 side locking pin 5b contacts the locking part 7b of the locking member 7 and is locked.

As shown in FIG. 11, the spring-type door closer 1 having the above-described structure is provided inside the upper part of the sliding door 20.
It is embedded with the tip of the rotary shaft 4 protruding upwards,
The mounting plate 3 is fixedly attached to the upper edge of the door. on the other hand,
An L-shaped receiving metal fitting 16 is fixed to the outer frame side, and a spring-type door closer 1 is inserted into a hole 16a formed in the receiving metal fitting 16.
The taper portion 4a at the tip of the rotary shaft 4 is fitted, and the nut is tightened to the screw portion 4b on the taper portion 4a to fix the rotary shaft 4 to the outer frame side.

A receiving bracket 17 having a hole is attached to the bottom of the sliding door 20, and an L-shaped receiving bracket 18 is fixed to the outer frame side. Pivot pin 1 on the bracket 18
9 is projected, the pivot pin 19 is rotatably fitted in the hole of the receiving metal fitting 17 on the side of the sliding door 20, and the sliding door 20 is pivoted, that is, supported so as to be openable and closable on both sides.

When the sliding door 20 is opened counterclockwise, for example, in a plan view, since the rotary shaft 4 is fixed, the main body case 2 side is rotated together with the sliding door 20 in the same direction. The stop pin 5b is rotated in the same direction. Therefore, the locking pin 5b pushes the locking portion 7b to rotate the locking member 7 in the counterclockwise direction, whereby the coil spring 8 in the main body case 2 is rotated in the same direction. At this time, since the locking member 6 with which the upper end of the coil spring 8 is locked contacts the locking pin 4c and cannot rotate, the coil spring 8 is twisted, and there is a direction to return the twist, that is, in plan view. Turning force is generated in the clockwise direction.

Therefore, when the sliding door 20 is opened in the counterclockwise direction, the coil spring 8 exerts a turning force in the direction of closing the main body case 2, that is, the sliding door 20, and the opening sliding door 20 is opened.
When the hand is released from the sliding door 20, the sliding door 20 is rotated in the closing direction by its urging force.

On the other hand, when the sliding door 20 is opened clockwise in a plan view, the main body case 2 side is rotated together with the sliding door 20 in the same direction with the rotary shaft 4 fixed, whereby the mounting plate 3 is engaged. The stop pin 3b is rotated in the same direction. For this reason,
The locking pin 3b pushes the locking portion 6b to rotate the locking member 6 in the clockwise direction, whereby the coil spring 8 in the main body case 2 is rotated in the same direction.

At this time, the locking member 7 with which the lower end of the coil spring 8 is locked comes into contact with the locking pin 4d and cannot rotate, so that the coil spring 8 is twisted, and there is a direction to return the twist.
That is, a turning force is generated counterclockwise in a plan view.

Therefore, when the sliding door 20 is opened in the clockwise direction, the coil spring 8 causes the main body case 2, that is, the sliding door 2.
When a turning force is applied in the direction to close 0 and the hand is released from the opened door 20, the door 20 is rotated in the closing direction by its urging force and automatically closed.

In this way, the spring door closer 1 is
With a simple structure that only attaches the coil spring 8 of the book, it can be configured so as to be small, so it can be installed so as to be embedded inside a sliding door or door, and the appearance is not conspicuous, making it a door hinge device for double doors and sliding doors. It can be used effectively.

The spring type door closer 1 as described above is used.
Can be attached to the bottom of the door, in which case L
The shape of the metal fitting 16 is arranged below the metal fitting 16.

The spring type door closer 1 can also be used with a floor hinge using a damper to construct a door hinge device for a double door. In this case, the spring door closer 1 is attached to the upper part of the door as in FIG. 11, and the floor hinge with the damper is embedded in the floor below the door. Then, a receiving fitting is attached to the lower part of the door, and the pivot shaft protruding upward from the floor hinge is fitted to the receiving fitting on the door side.

With such a structure, the door can be urged in the closing direction by both the spring door closer 1 and the floor hinge with damper, and even a large-sized door having a large weight can have a small floor. Doors can be closed automatically with hinges and door closers.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a spring door closer of the present invention.

FIG. 2 is a front view of a mounting plate of a door closer.

FIG. 3 is a plan view of the mounting plate.

FIG. 4 is a left side view of the rotary shaft of the door closer.

FIG. 5 is a plan view of a bottom plate fixed to the lower portion of the main body case of the door closer.

FIG. 6 is a front view of the bottom plate.

FIG. 7 is a bottom view of a locking member rotatably arranged in the main body case.

FIG. 8 is a plan view of the locking member.

FIG. 9 is a sectional view of the locking member.

FIG. 10 is a right side view of the locking member.

FIG. 11 is a front view when a door hinge device using a spring door closer is applied to a sliding door.

[Explanation of symbols]

 1-spring type door closer, 2-main body case, 3-mounting plate, 4-rotating shaft, 5-bottom plate, 6,7-locking member, 8-coil spring, 3b, 4c, 4d, 5b-locking pin, 6b, 7b-locking part.

Claims (2)

[Claims] 1. A rotary shaft having a protruding tip is rotatably disposed in a cylindrical main body case, a coil spring is externally fitted around the rotary shaft, and an upper portion of the rotary shaft is provided. A locking member is externally fitted to the lower part so as to be rotatable within a predetermined angle range, the upper end of the coil spring is fixed to the upper locking member, and the lower end of the coil spring is fixed to the lower locking member. The locking pin projecting inward from the mounting plate mounted to cover the upper part of the main body case abuts on the locking part of the upper locking member, and the locking pin projecting from the bottom plate of the main body case. The locking pin abuts on the locking portion of the lower locking member, and the locking pin protruding from the upper portion of the rotating shaft abuts the locking portion of the upper locking member, A spring-type door closer, characterized in that a locking pin projecting from the lower part of the lower part of the locking member abuts on the locking part of the lower locking member. 2. A spring-type door closer attached to the upper or lower part of the door, and a receiving metal fitting attached to the ceiling side or the floor side facing the spring-type door closer, for fitting / fixing the protruding tip of the rotating shaft. The spring hinged door closer is provided with a rotary shaft having a tip protruding so as to be rotatable in a cylindrical main body case, and a coil spring is externally fitted around the rotary shaft. , A locking member is externally fitted to the upper and lower portions of the rotary shaft so as to be rotatable within a predetermined angle range, an upper end of the coil spring is fixed to the upper locking member, and a lower end of the coil spring is lower. The locking pin fixed to the locking member and protruding inward from the mounting plate attached to the upper portion of the main body case abuts the locking portion of the upper locking member, The locking pin protruding from the lower locking portion Locking pin that abuts on the locking part of the rotary shaft, and the locking pin that projects on the upper part of the rotating shaft contacts the locking part of the locking member on the upper side, and the locking pin that projects on the lower part of the rotating shaft A door hinge device, wherein the door hinge device is configured so as to abut against the locking portion of the lower locking member.