JP2011094445A - Automatic opening/closing door hinge - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door hinge having an automatic opening/closing function, which incorporates a suppression damper function in a hinge shaft cylinder without using an oil pressure cylinder or an air pressure cylinder. <P>SOLUTION: In the automatic opening/closing door hinge, a cam bush 10 processed with an inclined groove and having a damper function is liftably mounted into a shaft cylinder of a hinge slat 2 of a pair of hinge slats 1, 2. A compression coil spring 12 energized downward by the cam bush 10 is provided. When the pair of hinge slats 1, 2 open in the outer peripheral direction, the compression coil spring 12 is energized and compressed in the descending direction by the cam bush 10 with a cam pin 11 as the fulcrum. When the opened state is released, the pair of hinge slats 1, 2 are closed by a restoring force of the compression coil spring 12 and the inclination of the cam groove of the cam bush 10 having a damper function. The closed state can be suppressed by the cam pin 11 and a tilt angle of the cam groove formed in the cam bush 10 without using the oil pressure or air pressure cylinder. Conversely, when the closed state is switched to the opened state, the function can be used in the same manner. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

The present invention relates to a door hinge that can automatically close a door in an open state or open a door in a closed state automatically.

Conventionally, in the automatic closing hinges used for opening and closing doors such as entrance doors and conference room doors, the structure is complicated, and hydraulic and pneumatic piston cylinders are contained inside, so it is expensive and large overall, and it is expensive In addition, it is difficult to use as an interior door in an apartment or the like because of its appearance and high price, and in the case of using a hydraulic piston cylinder, there are problems such as oil leaks and surroundings.

Patent Document 1 proposes that a cam groove mechanism formed on a cam bush and a hydraulic damper may be used in combination or only a cam bush may be used.

Japanese Patent No. 3485383

However, the above-mentioned Patent Document 1 has the inconvenience that it is necessary to prepare various types of cassette-type dampers having different urging forces depending on the weight of the door. In reality, in addition to the weight of the door, ventilation conditions and Since the situation changes depending on the sealed room, etc., adjustments at the site will be necessary.
The present invention adjusts the weight of the door by adjusting the start of the closing operation by urging the compression coil spring, and adjusting the speed of closing the door by the cam groove angle formed in the cam bush and the cam pin tracing the cam groove. Therefore, providing the door closing speed does not change even if the door weight changes, and providing a hinge function that can be easily used as the automatic door opening hinge using the same function as necessary. It is in.

According to the present invention, the relationship between the restoring force against the bias of the compression coil spring, the inclination angle of the cam groove formed in the cam bush, and the thickness of the cam pin that traces it is such that the strength and size can be adapted to each purpose. The above problem has been solved by providing that the damper is configured to have an appropriate door closing speed regardless of the weight, especially in the function part of the damper of the inclination angle of the cam groove. It is.

When using an automatic door hinge, if it is too large, the appearance of the entire door is impaired, and it is often attached to the center of the function, but the product of the present invention has a slim diameter of 17 mm. For this reason, there is an effect that it can be used for a door with an emphasis on design without impairing the design feeling of the entire door.

Moreover, since the upper door side and lower frame side of the pair of hinges are separated when installing, the door frame does not need to be dug up because the thickness of the hinges is the same as a general flag hinge, so the door frame does not need to be dug. Since it is attached separately on the side and the frame side, and only the door side is inserted later, it is easy to attach and saves the cost and time of installation.

Furthermore, since the number of parts is small, there is an effect that it can be made inexpensive and there is no need to worry about oil leakage.

In addition, the automatic door opening function can be easily made as necessary.

Names and exploded views of each part of the automatic door hinge Sectional view showing the closed state of the automatic door hinge Sectional view showing the opened state of the automatic door hinge (a), (b), (c), (d) are a side view, a longitudinal sectional view, a bottom view, and a side development view of a cam bush used for an automatic door hinge. FIG. 5 is an explanatory view showing an open / closed state of the door.

Hereinafter, a description will be given based on the drawings. FIG. 1 is a name and exploded view of each member, FIG. 2 is a cross-sectional view showing a closed state of an automatic door hinge, FIG. 3 is a cross-sectional view showing an open state of an automatic door hinge, and FIGS. ), (C), (d) are a side view, a longitudinal sectional view, a bottom view and a side development view of a cam bush used for an automatic opening / closing door hinge, and FIG. 5 is an explanatory view showing an open / closed state of the door.

In these drawings, E indicates a door, and F indicates a door frame to which the door E is attached. Reference numeral 1 denotes an upper hinge member attached to the door E. The upper hinge member 1 includes a blade plate 15 and a shaft cylinder 19 formed integrally with one end of the blade plate 15. The blade 15 is provided with a plurality of mounting holes 17 for screwing the door E.

Reference numeral 2 denotes a lower hinge member attached to the door frame F, which is composed of a blade plate 16 and a shaft cylinder 20 formed integrally with one end of the blade plate 16. The blade plate 16 is provided with a plurality of mounting holes 18 for screwing the door frame F.

Reference numeral 7 denotes a washer fixedly attached to the upper end of the shaft cylinder 20.

Reference numeral 10 denotes a cam bush attached to the shaft cylinder 20, and the cam bush 10 has a cylindrical shape as shown in FIG. 3B, and the shaft 5 is inserted into the cylinder and provided on the shaft 5. The cam pin 11 is inserted in the hole 21 and attached. The cam bush 10 is attached so as to be movable up and down along a groove provided inside the shaft cylinder 20.

Further, when the cam bush 10, the shaft 5 and the cam pin 11 are inserted into the shaft cylinder 20, the ball bearing 9 and the ball bearing receiver 8 are attached to the ball bearing receiver 23 provided on the shaft 5 side in order to reduce friction. The shaft cylinder 20 is inserted from below.

A compression coil spring 12 is inserted into the shaft cylinder 20 and is mounted on the shaft cylinder 20 together with 13 washers and 14 pressure adjusting screws.

Reference numeral 4 denotes a bearing mounted in the shaft cylinder 19. The bearing 4 is configured to be integrated with the upper hinge member 1 by inserting the protruding portion of the bearing 4 together in a groove provided inside the shaft cylinder 19 to restrict rotation.

Reference numeral 6 denotes a bush that reduces friction generated when the upper hinge member 1 and the lower hinge member 2 are rotated around the shaft 5.

Reference numeral 3 denotes an end cap attached to the shaft cylinder 19 and the shaft cylinder 20. The end cap 3 is attached to prevent the entry of dust and the like and improve the appearance of the appearance when the automatic opening / closing door hinge is completely attached.

Next, the operation will be described. As shown in FIG. 1, when the door is in the closed state, the cam pin attached to the shaft 5 is positioned at the bottom of the cam groove 22. When this shifts to the open state, the shaft 5 rotates in conjunction with the rotational movement of the upper hinge member 1. At that time, the cam pin rotates while being traced in the cam groove 22, and the cam bush 10 is pushed downward. This state is the open state of FIG.

At this time, the compression coil spring 12 is pushed down by the cam bush 10, and the restoring force of the compression coil spring 12 generates an action force opposite to the movement from the closed state to the open state. As a result, the door is closed.

At this time, the change of the angle of the cam groove 22 has the following effects on the opening and closing of the door.
The cam pin 11 is positioned at 10a in FIG. 4 (d) in a state opened 90 degrees from the closed state. This state is a position where the door is temporarily fixed when the door is opened 90 degrees, and is necessary when the door is attached or for maintaining the opened state. Next, the state from 85 degrees to 21 degrees is a section in which the cam pin 11 is located at 10b and is constituted by a straight cam groove 22, which allows the door to be closed without resistance. Next, in the state of 20 ° to 0 °, the cam pin 11 is located at 10c, and the latch provided on the door is securely stored in the strike provided on the door frame. Suddenly, the closing power is strengthened.

Thus, by changing the inclination angle and shape of the cam groove 22, the opening / closing angle can be increased and the speed can be adjusted.

Further, the closing force of the door can be adjusted by the pressure adjusting screw 14 at the lower part of the compression coil spring 12. When the pressure adjusting screw attached to the shaft cylinder 20 is tightened, the compression coil spring is compressed and the door can be closed with a stronger force.

When the automatic opening / closing door hinge is in the open state, the compression coil spring 12 is pushed down by the cylindrical cam 10. At this time, the upper hinge member 1 is rotated 90 degrees, inserted into the shaft 5, and closed. When it is in the completed state, the door can be opened automatically.

1. Upper hinge member
2, Lower hinge member
3, end cap
4, bearing
5, axis
6, bush
7, washer
8, ball bearing receiver
9, ball bearing
10, cam bush
11, cam pin
12, compression coil spring
13, washer
14, pressure adjusting screw
15, 16, slats
17, 18, mounting holes
19, 20, shaft cylinder
21, hole
22, cam groove
23, ball bearing receiver

Claims (6)

A pair of hinge members each having a shaft cylinder, and a cam bush provided with a cam groove having a damper function inclined shape in a cylindrical shaft cylinder provided on the one hinge member, It can be moved up and down along a shaft core projecting out of the shaft tube from the inside of the one shaft tube engaged in a cylindrical hole provided at the center of the cam bush, and a groove recessed in the shaft tube. The attached cam bush is engaged through a cam pin, and the cam bush includes a compression coil spring that urges the cam pin in a downward direction with the cam pin as a fulcrum, and the one protruding shaft core and the other The cam bush, which is relatively lowered by engaging the shaft cylinder of the hinge member and releasing the pair of hinge members from the closed state, is caused by the return operation by the restoring force of the compression coil spring and the inclination of the cam groove. Ascending with cam pin as fulcrum The pair of hinge members are closed, the closing operation of the pair of hinges is suppressed, and on the contrary, the function can be similarly used from the closed state to the open state. A feature of the hinged automatic door hinge. 2. The automatic door closing hinge according to claim 1, wherein the cam groove formed in the cam bush having the damper function is stationary at about 90 degrees with respect to an angle of the pair of hinges in an open state and has a temporary fixing function. It is released at about 85 degrees and becomes a closed state, the damper function works from about 85 degrees to about 21 degrees, and the function that becomes a fully closed state works from about 20 degrees to 0 degrees, each function The automatic opening and closing door hinge is characterized in that the angle of the cam groove is configured to work. 2. The automatic door hinge according to claim 1, wherein the cam bush having the damper function is attached so as to be movable up and down along a groove formed in the one shaft cylinder, and is inserted into the one shaft core. An automatic opening / closing door hinge characterized in that is engaged by a cam pin and installed in the shaft cylinder. 2. The automatic door hinge according to claim 1, wherein the shaft cylinder has a diameter of 15 mm to 20 mm, so that the pair of shapes makes a slim appearance. In the automatic door closing hinge according to claim 1, it is necessary by setting the shape of the cam groove formed in the cam bush, the position of the cam pin engaged with the shaft core, and the number of cam pins to one or two. The automatic opening and closing door hinge is characterized by the fact that it can be opened 90 degrees or 180 degrees, and the closing speed can be changed. 2. The automatic door hinge according to claim 1, wherein when the other hinge is inserted into a shaft core formed for the purpose of locking and protruding from the one shaft tube, the hinge is opened 90 degrees and left and right On the other hand, the automatic opening and closing door hinge is characterized by the fact that it can be changed from an automatic closing butterfly to an automatic opening hinge.

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