KR20180101982A - Door closer integrated in door frame - Google Patents

Abstract

The present invention is to provide a frame-integrated type door closure that can be applied to a door of a hinged door to maintain the door closed and opened according to the door opening angle.
That is, the present invention relates to a cylinder structure, comprising: a cylinder rotatably pinned to a frame and having a rod protruding and retracted by an action of a spring installed therein; A shaft piece coupled to the frame and having a shaft hole formed at the center thereof and projecting outward; A hinge shaft coupled to the shaft hole of the shaft; And a protruding piece protruding outwardly from the door at one side thereof, the protruding piece having a shaft hole to which the hinge shaft is coupled and a through hole formed at a side of the fixing hole, wherein the protruding piece is formed on the upper surface of the door to pivot the door about the hinge axis. A bracket; And a planetary shaft inserted into the through hole to engage the rod end of the cylinder with the projecting piece of the bracket. When the planetary shaft is positioned on the reference line connecting the cover pin and the hinge shaft, the door is partially opened There is a topping effect.

Description

[0001] The present invention relates to a door closer integrated door frame,

The present invention relates to a door closer. More specifically, the present invention relates to a frame-integrated type door closure that can be applied to a door of a hinged door to maintain the door closed and opened according to the door opening angle.

In general, a door closer such as a front door is provided on the upper part of a door such as a door check, so that the door smoothly closes itself without closing the door after the person opens the door.

Such a conventional door closure has only a function of automatically closing an opened door automatically and there is no function for maintaining the door in an open state. In order to prevent the door from closing, the door is rotated by a hinge A rubber stopper is installed on the end of the lever, and a door stopper is installed to stop the door when the lever is rotated downward so that the rubber is interposed on the floor.

Since the door stopper thus constructed is a separate component from the door closer, it must be installed separately at the time of installation. When the stopper is not used, there is an inconvenience of lifting the lever by bending the waist every time. Or if the door is detached, its functionality is lost. To solve this problem, Korean Patent Publication No. 10-1094100 discloses a door closer integrated door stopper technology.

A stopper housing formed as a cylindrical body having an opened upper surface and a support portion protruding at a predetermined height on one side of the upper surface; A rotation cam assembled inside the stopper housing; A handle attached to the bottom of the stopper housing for rotating the rotation cam, the handle being rotatably mounted on the bottom surface of the stopper housing and having a plurality of teeth formed on the inner circumference of the shaft, ; A coupling for connecting the rotation cam and the handle so that they are integrally operated; Is provided.

However, since the above-described prior arts have a complicated technical structure, the manufacturing cost is high and the unit price is high. Therefore, the consumer is dismissed from the purchasing customer. In order to turn the door stopper function on and off, the handle of the bottom of the stopper housing must be hand- It is inconvenient for the user to open the door with one hand and turn the handle with the other hand. Above all, since the operation handle is located at the upper portion of the door, people with a small height such as a child can not use this function.

KR 10-1094100 B1 (December 08, 2011)

The present invention has been made to solve the above-described problems of the prior art,

The present invention provides a frame-integrated type door closure capable of selectively using the door closing function according to an opening angle of the door, the functionality of the door stopper, and the door to be fully opened.

Another object of the present invention is to provide a frame-integrated type door closure which can minimize the portions exposed to the outside and integrally constitute the inside of the door frame so that the door can stop by itself at a certain angle to maintain the open state.

Although not described separately, other objects within the scope of the present invention are also included in the overall task of the present invention in consideration of the specific contents and claims of the present invention.

In order to solve the above problems, according to the present invention, there is provided a door stopper,

A cylinder rotatably pinned to a frame on an upper side of the door and projecting and retracting due to the action of a spring installed therein; A shaft piece coupled to the frame and having a shaft hole formed at the center thereof and projecting outward; A hinge shaft coupled to the shaft hole of the shaft; And a protruding piece protruding outwardly from the door at one side thereof, the protruding piece having a shaft hole to which the hinge shaft is coupled and a through hole formed at a side of the fixing hole, wherein the protruding piece is formed on the upper surface of the door to pivot the door about the hinge axis. A bracket; And a planetary shaft which is inserted into the through hole to engage the rod end of the cylinder with the projecting piece of the bracket so that the door is stopped when the planetary shaft is on the reference line connecting the cover pin and the hinge shaft The present invention is intended to solve the problem of the present invention.

Another object of the present invention is to provide a cylinder (2) comprising a tube body (21) filled with oil and sealed up front and rear by a head cover (23) and a back cover (22); A piston 25 positioned inside the tube 21 and connected to the center of the rod 26 and having two or more check valves 27 formed on the outside thereof; A compression spring (24) biased between the piston (25) and the head cover (23); And a center passage 26a formed in the inside of the rod and connecting the front and rear of the piston 25. The check valve 27 is opened when the rod is drawn out to the outside of the body while the door is opened .

According to the concrete means for solving the above-mentioned problems, there is no need to purchase or install a separate door stopper, since the door closer has a door topping function. Therefore, it is possible to provide a neat clean feeling without leeway, You can feel the trim and simple appearance that is composed of inside.

Since the stopping is performed according to the opening angle of the door, additional operation for stopping the door is not necessary, so that a child or an aged person having a small height can easily operate. If necessary, the opening angle of the door can be partially opened State or a fully opened state of 180 degrees.

And the closing action of the door is smoothly performed by absorbing the elastic force of the spring by the cylinder filled with the oil.

1 is a perspective view showing a first preferred embodiment of a frame-integrated type door closure provided in the present invention;
Fig. 2 is an exploded perspective view of the door closure of the present invention
Fig. 3 is a perspective view showing a part of the door,
4 is a sectional view of the door closure in a partially opened state of the door
Fig. 5 is a perspective view of the main part showing the fully opened state of the door.
6 is an exploded perspective view showing the piston structure inside the cylinder.
7 is a plan view showing the state of the closed section of the door closer
8 is a plan view showing a partially opened state of the door closure;
9 is a plan view showing a fully opened state of the door closure
10 is a cross-sectional view showing the cylinder action of the door closure

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may obscure the subject matter of the present invention.

FIG. 1 is a perspective view showing a first preferred embodiment of a frame-integrated door closure provided in the present invention. As shown in FIG. 1, the present invention is integrally provided in an upper frame 1 of a door of a hinged door, 6, the door can be selectively opened or partially opened or closed according to the angle at which the door is opened.

Here, a partial opening of the door means an open state at an angle between about 80 degrees and 100 degrees, which allows a person to pass through sufficiently, and the full opening means that the door is opened by 170 degrees or more, Or no clogging.

Fig. 2 is a perspective exploded view of the door closure according to the present invention, Fig. 3 is a main part perspective view showing a partially opened state of the door, Fig. 4 is a sectional state view of the door closure in a partially opened state, Is a louver perspective view showing an open state.

Referring to FIG. 1, a bracket 7 is bolted to a shaft piece 5 formed on a shaft hole 5a protruding from a frame 1 located on a door and to which a hinge shaft 6 is coupled, A door 2 is provided between the frame 1 and the bracket 7 of the door so that the door is automatically closed or fully opened .

A bracket 7 is provided on an upper surface of the door to open and close the door around the hinge shaft 6. The bracket 7 is composed of a fixing piece 71 and a protruding piece 72. The fixing piece 71 is a member for fixing the upper surface of the door with a bolt and a projecting piece 72 protruding toward the outer side of the door to one side of the fixing piece 71 is provided with a shaft hole 72a And a through hole 72b is formed at a position adjacent to the side of the shaft hole 72a.

It is preferable that the protruding piece 72 surrounding the through hole 72b is protruded upward by the height of the rod 26 of the cylinder as shown in the figure. This is because the coupling between the front end of the rod and the planetary shaft can be enhanced and smooth operation can be achieved.

On the other hand, the cylinder has a pipe-shaped tube body 21 and a head cover 23 and a back cover 22 respectively coupled to the front and rear sides thereof. The back cover 22 has a hinge plate 9 fixed to the frame 1, And the cover pin (8), so that the turning operation of the cylinder (2) is performed.

In the present invention, a through hole (1a) larger than the outer diameter of the cylinder is formed inside the frame (1) where the cylinder is located so that the cylinder (2) installed in the frame (1) By joining the hinge plate 9 with the hinge plate 9 for connecting the back cover 22 and the cover pin 8 from the outside, the hinge plate can be easily taken out through the through hole .

4, a piston 25 having a rod 26 penetrating the center thereof is inserted into the tube 21 of the cylinder 2, and a coil compression spring 26 is interposed between the piston 25 and the head cover 23, (24) is interposed between the rod (26) and the rod (21).

FIG. 6 is an exploded perspective view showing the piston structure inside the cylinder, and explains a key configuration for buffering the shock when the door is closed.

Two or more check valves 27 are formed in the radial direction of the piston 25. The check valve 27 is provided with a check hole 27a through which the fluid flows and a check spring 27c provided inside the check hole, The check spring 27c is configured to be resiliently biased by a spring cover 28 coupled to the back surface of the piston and preventing the release of the spring.

O-rings are provided on the outer circumferential surface of the piston 25 so as to prevent oil to be injected into the inside of the tubular body from being leaked between the inner tubular walls. Therefore, when the rod 26 is pulled out while the door is opened, (The space between the piston and the back cover) 2b flows through the check valve 27 only toward the rear chamber (space between the piston and the back cover) 2b.

On the other hand, the rod 26 protrudes to the rear of the piston 25, the center passage 26a formed at the center of the rear end of the protruded rod is connected to the front of the piston, So that the diameter of the shielding groove is greater than or equal to the diameter of the rod protruding rearward of the piston.

The front end of the rod 26 is engaged with a planetary shaft 4 which is inserted into the through hole 72b formed in the projecting piece 72 of the bracket 7 to connect the cylinder rod 2 with the bracket.

As shown in FIG. 3, the frame-integrated type door closure of the present invention having the above-described structure includes a cover pin 8, a hinge shaft 6 and a planetary shaft 4, 4, the spring 24 is maximally compressed to have the maximum elastic closing force for closing the door, but since the acting direction of the elastic closing force is on the reference line connecting the cover pin 8 and the hinge shaft 6, So that the door is kept in a partially opened state by a parallel force.

In this state, when the door is slightly rotated and the planetary shaft 4 passes over the tip of the shaft piece 5, a moment due to the elastic step force of the spring 24 of the cylinder 2 is generated, And is completely opened at an angle of 180 degrees as shown in Fig.

Hereinafter, the operation of the frame-integrated type door closure configured as described above will be described with reference to the drawings. Fig. 7 is a plan view showing the state of the door closing section A, Fig. 8 is a partially opened state of the door closer, and Fig. 9 is a plan view showing the fully closed state of the door closer.

When the planetary shaft 4 is positioned on the right side of the reference line when the door is opened as shown in FIG. 7, when the hypothetical line connecting the cover pin 8 and the hinge shaft 6 is regarded as a reference line, The rod 26 is pulled by the elastic force of the spring 24 installed inside, and the door is automatically closed. Therefore, even if the pedestrian opens the door and then leaves the next door, the closing operation is automatically performed.

When the door is temporarily kept in the open state (80 to 100 degrees open) in case of a visit such as a carrier or a deliveryman, the door is opened to position the planetary shaft 4 so as to be close to the reference line The pulling force of the lower spring and the resting force due to the weight of the door are parallel to each other and can be fixed in a partially opened state.

In this state, the spring 24 is compressed to the maximum, and the acting force is large, but the point of action of the force is located on the reference line, so that the door is closed or is not fully opened.

If people come and go very frequently, it may be necessary to open the door at 180 degrees and fix it. 8, a moment due to the elastic force of the spring 24 is generated so that the planetary shaft 4 is positioned on the left side of the reference line, as shown in FIG. 9, So that the door can be kept open without being shaken by the action force of the cylinder 2 even if the door is not fixed to the outer wall. Therefore, the door can be automatically opened without any device such as a door stopper .

FIG. 10 is a sectional view showing the cylinder action of the door closure. The cylinder 2 applied to the door closure of the present invention is filled with oil in the tubular body 21 so as to smoothly close the door, And the oil filled in the inside of the tube serves to control the closing speed and the shock when the door is automatically closed.

10 (a), when the rod 26 is drawn into the tubular body due to the restoring force of the spring, the oil in the rear chamber 2b flows into the center passage 26a formed in the rod, To the front chamber 2a, and the repulsive force of the spring is attenuated.

If the piston 25 directly collides against the protruded back cover 22 while the spring 24 is being restored, the cylinder 2 may be overloaded, It is preferable to stop the oil in the rear chamber 2b by preventing the end portion from falling into the front chamber 2a as the end portion is inserted into the shielding groove 22a.

When the size of the center channel 26a is adjusted, it is possible to adjust the closing time from 80 degrees to fully closed from 3 seconds to 20 seconds.

10 (b), when the rod 26 is drawn out to the outside of the tubular body, all the check valves 27 formed in the piston are opened so that the fluid in the front chamber 2a flows only into the center passage 26a A large amount of oil is simultaneously transferred through the four check valves, so that the resistance of the oil transmitted to the piston 25 is small and the opening of the door is facilitated.

The door closure provided in the present invention has a structure that can be installed inside a door frame, so that it is easy to install, and there is also an effect of providing a clean beauty without spoiling the portion protruding outside.

While the present invention has been described in connection with what is presently considered to be the most practical embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. Therefore, the scope of protection of the present invention is not limited to the above-described embodiments, but the scope of the claims of the following claims and the scope of protection from these techniques to equivalent technical means should be acknowledged.

A: Closed section, B: Open section, C: Open section
1: Frame 2: Cylinder 2a: All room 2b:
21: tube body 22: back cover 22a: shielding groove 23: head cover
24: spring 25: piston 26: rod 26a:
27: Check valve 27a: Check hole 27b: Check ball 27c: Check spring 28: Spring cover
4: planetary shaft 5: shaft piece 5a: shaft hole
6: hinge shaft 7: bracket 71: fixing piece 72: projecting piece 72a: shaft hole 72b: through hole
8: cover pin 9: hinge plate

Claims (2)

A cylinder 2 rotatably coupled in the frame 1 on the door and in which the rod 26 is projected and retracted by the action of a spring 24 installed therein;
A shaft piece (5) coupled to the frame (1) and having a shaft hole (5a) formed at its center and projecting outward;
A hinge shaft (6) coupled to the shaft hole (5a) of the shaft piece (5);
A fixing piece 71 provided on the upper surface of the door for pivoting the door about the hinge shaft 6 and a shaft hole 6b projecting outwardly from the door at one side thereof and coupled with the hinge shaft 6 A bracket 7 made up of a projecting piece 72 in which a through hole 72b is formed in a side portion thereof;
And a planetary shaft 4 which is inserted into the through hole 72b to engage the end of the rod 26 of the cylinder 2 with the projecting piece 72 of the bracket 7, Is positioned on a reference line connecting the cover pin (8) and the hinge shaft (6), the door is stopped in a partially opened state.
The method of claim 1,
The cylinder (2)
A tubular body 21 filled with oil inside and closed by the head cover 23 and the back cover 22 all the way back and forth;
A piston 25 which is located inside the tube body 21 and through which a rod 26 is inserted at the center and has two or more check valves 27 formed on the outside thereof;
A compression spring (24) biased between the piston (25) and the head cover (23);
And a center passage (26a) formed in the rod and connecting the front and rear of the piston (25)
And the check valve (27) is configured to be opened when the rod is drawn out to the outside of the tubular body while the door is opened.

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