KR100381662B1 - Door check - Google Patents

Abstract

The present invention relates to a door check embedded in the upper side of the door and also serves as a pivot hinge, and includes a fixed cylinder vertically embedded at an upper end of the door, and is rotatably inserted into the fixed cylinder and has a horizontal guide groove at a lower side thereof. A rotating cylinder in which the inclined guide groove is formed up and down, a hydraulic passage inserted into the rotating cylinder so as to be elevated, and having a ball valve installed at an upper end thereof; The lower end of the operating hole is formed with a screw thread, and the through hole is formed in the middle one side of the operating port is slidably inserted and the support pin is inserted into the vertical groove of the operating hole through the horizontal guide groove and the through hole of the rotating cylinder Supporting means for elastically supporting the spring installed on the outer circumference of the operating tool by A hatch which is fastened, and has a fitting hole into which a sliding pin is fitted through the inclined guide groove of the rotary cylinder, and the elevating hole elastically elevates the operating tool while elevating inclined in the inclined guide groove as the rotary cylinder rotates. And an operating body fixedly installed at an upper end of the rotating cylinder and configured to rotate the rotating cylinder. An upper gear and a lower plate fixedly attached to upper and lower ends of the fixed cylinder of the operation body, and idle gears that are engaged with the rotary gears of the operation body while being rotatably installed in the middle of the gear chamber formed between the upper and lower plates; Located at the end of the gear chamber between the upper and lower plates made of a connecting portion consisting of a fixed gear fixed to the door frame hinge while being engaged to the idle gear, the operating body is embedded at the top of the door, the connecting portion at the top of the door The invention is characterized in that the protrusion to serve as a pivot hinge.

Description

Door check

The present invention relates to a door check embedded in an upper side of a door and serving as a pivot hinge.

In general, a door check (or door closer) is used as a device that automatically closes a door to a front door or a fire door of a general house, apartment, or building.

The door check of the prior art is composed of an operation body fixedly installed at the top of the door, the main arm protruding from the operation body and an auxiliary arm rotatably connected to the free end of the main arm to be attached to the door frame. .

However, the door check of the prior art as described above is attached to a state in which the operating body is protruded to the top of the door, and also the main arm and the auxiliary arm is installed in a state that protrudes long from the top of the door is a problem that harms the appearance of the door In addition, it has been pointed out that the problem of prolonging the outer side of the door, that is, the upper side of the corridor, causes obstacles when carrying a bulky object into the corridor.

In particular, the conventional door check may damage the door because it is necessary to drill the attachment holes for attaching the operating body to the top of the door after installing the door. If the door check is broken and removed, the previously drilled holes are exposed as they are. It is pointed out as a problem.

The present invention was created to solve the above-mentioned problems of the prior art, while embedding the operating body of the door check on the top of the door while the hinge portion formed on the top of the operating body is rotatably attached to the door frame hinge attached to the door frame As an assembly structure, the invention has been developed for the purpose of providing a door check that can automatically close an open door while also serving as a pivot hinge.

The present invention as a means for achieving the above object,

A fixed cylinder vertically buried at the top of the door, a rotating cylinder inserted rotatably in the fixed cylinder, and having a horizontal guide groove and an inclined guide groove formed on the lower side up and down; A hydraulic passage is formed in the upper part and a ball valve is installed at an upper end thereof, and a vertical groove formed vertically toward the bottom in the middle and an operating hole having a thread formed at the lower end thereof, and a through hole formed at one side of the lower end of the operating hole. A support that is slidably inserted into and supports a spring installed on an outer circumference of the operating tool by a support pin inserted into the vertical groove of the operating tool through the horizontal guide groove of the rotating cylinder and the through hole, and a lower end of the operating tool. Screwed to the threaded portion, through which the sliding hole is fitted through the inclined guide groove of the rotating cylinder is formed As the rotary cylinder is rotated to operate inclined in the inclined phase by riding the inclined guide grooves and the lifting port for elastically operating the operation sphere, and is fixed to the upper end of the rotating cylinder is composed of a rotary gear for rotating the rotating cylinder Working body;

An upper gear and a lower plate fixedly attached to upper and lower ends of the fixed cylinder of the operation body, and idle gears that are engaged with the rotary gears of the operation body while being rotatably installed in the middle of the gear chamber formed between the upper and lower plates; A connection part comprising a fixed gear positioned at an end of the gear chamber between the upper and lower plates and fixed to the door frame hinge while being engaged with the idle gear;

The operating body is buried in the upper end of the door, the connecting portion is characterized in that the projecting from the top of the door,

In addition, a hydraulic path is formed at a lower portion of the rotary gear fixed to the upper end of the rotating cylinder of the operating body, and an upper hydraulic access hole is formed at the upper end of the fixed cylinder to communicate with the hydraulic passage. By forming a plurality of lower hydraulic entrance hole in the lower side of the operating body is characterized in that configured to circulate the hydraulic pressure,

In addition, by extending the upper plate of the connecting portion is characterized in that the attachment plate which can be fixed fixedly attached to the upper end of the door.

1 is a perspective view showing an installation of the present invention.

2 to 4 is a view showing the operating state of the present invention,

2 is a longitudinal sectional view when the door is closed;

3 is a longitudinal sectional view when the door is opened,

Figure 4 is for showing the process of transmitting the rotational force to the actuator of the present invention

It is sectional drawing along the A-A line of FIG.

5 is a cross-sectional view taken along the line B-B in FIG.

6 is a cross-sectional view taken along the line C-C in FIG.

7 is a front view of a rotating cylinder of the operating body of the present invention.

※ Explanation of code for main part of drawing

1: Operating body 2: Connecting part

3: door 4: fixed cylinder

5: rotating cylinder 6: operating port

7: Spring 8: Idle Gear

9: Fixed gear 21,22: Upper and lower plates

23: gear chamber 31: door frame hinge

41: Finishing Cap 51: Rotating Gear

54: hydraulic passage 55a, 55b: upper and lower hydraulic access hole

57: horizontal guide groove 58: inclined guide groove

61: hydraulic passage 62: ball valve

64: vertical groove 65: support

66: hatch 67: support pin

68: sliding pin 81: ball

92: hinge

An embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing an installation state of the present invention, Figures 2 to 4 are views showing the operating state of the present invention, Figure 5 is a cross-sectional view taken along line BB of Figure 2, Figure 6 is a cross-sectional view taken along line CC of FIG. 7 is a front view of a rotating cylinder of the operating body of the present invention,

Reference numeral 1 denotes an operating body, reference numeral 2 denotes a connecting portion, and the operating body 1 is embedded in a concealed state at the upper end of the door 3, and the connecting portion 2 is located at the top of the door 3. Protruding to one side is the rotation is freely coupled to the door hinge (31).

The rotating cylinder 5 is inserted into the fixed cylinder 4 of the working body 1 in a rotatable state, and a rotating gear 51 is fixedly installed on the upper end of the rotating cylinder 5, wherein the rotating gear ( 51 protrudes on the upper end of the rotating cylinder 5, and its lower portion 52 is inserted into the rotating cylinder 5 in a fixed state.

In the center of the rotary gear 51 and the lower portion 52 is assembled in a state that the assembly opening 53 penetrates, and the one side of the eccentric position of the lower end of the assembly opening 53 is in communication with the hydraulic passage (54a) A vertical passage 56 is formed, and an upper hydraulic entry hole 55a communicating with the hydraulic passage 54 is formed above the rotary cylinder 5, and a plurality of lower hydraulic entry and exit positions are provided below the rotary cylinder 5, respectively. The ball 55b is drilled.

On the lower side of the rotating cylinder (5), the horizontal guide groove (57) long in the 180 ° angle width toward the outer circumferential horizontal direction and the inclined guide groove (58) long in the 180 ° angle width toward the downward inclination direction of about 45 ° It is formed above and below.

Next, in the inside of the rotary cylinder 5 below the rotary gear 51, an operating tool 6 serving as the main function of the door check is inserted into and liftable.

The upper end of the operating port (6) is provided with a ball valve 62 for blocking and opening the hydraulic passage 61 so as not to be relaxed by the snap ring 63, and also in the middle of one side of the operating port (6) A vertical groove 64 is formed to extend in a vertical direction toward the downward direction. A cylindrical supporter 65 is liftably fitted in a position surrounding the lower end of the vertical groove 64, and the supporter ( 65) Hatch 66 is screwed under the fixed state.

The support 65 is formed by a support pin 67 formed in the vertical groove 64 through the horizontal guide groove 57 of the rotary cylinder 5 to form a through hole 65a on one side thereof. It is possible to maintain the state installed in the sphere (6), the outer end of the support pin (67) is horizontally moved as caught in the horizontal guide groove (57) while the inner end is inserted into the vertical groove (64) It is to act to allow the lifting operation of the operating port (6) in the state.

In addition, the outer end of the sliding pin 68, which is formed through the inclined guide groove 58 after the fitting hole 66a is formed on one side of the hatch 66, is caught by the inclined guide groove 58 and the inner end thereof. Is clamped in the fitting hole 66a.

Therefore, when the rotary cylinder 5 is rotated, the inclined guide groove 58 is pressed down the sliding pin 68, so that the hatch 66 and the operating port 6 is lowered downward.

Next, the spring 7 installed on the outer circumference of the actuating tool 6 is elastically supported by the support 65 so that the actuating device 6 is lowered while compressing the spring 7. It is configured to rise to the original position by the elastic restoring force.

Next, the upper and lower plates 21 and 22 of the connecting portion 2 protruding on one side of the upper end of the operation body 1 are welded to the upper end of the fixed cylinder 5 in an integrated state, and the upper plate 21 is The rotary gear 51 is installed in a state that allows rotational operation, and the lower plate 22 is welded to form a gear chamber 23 having an appropriate space between the upper plate and the upper plate.

In the middle portion of the gear chamber 23 of the connecting portion 2, the idle gear 8 is rotatably installed by the ball 81, 82 is engaged with the rotary gear 51, A fixed gear 9 fixed to the door frame hinge 31 is engaged with the idle gear 8 at the end of the gear chamber 23.

The coupling structure of the fixed gear 9 and the door frame hinge 31 may be coupled by a coupling pin 91 as shown in the drawing, but the coupling structure is a structure other than the coupling pin 91 and the door 3. When the idle gear (8) is engaged with the fixed gear (9) when it is opened, it is a satisfactory configuration if it has a structure that can rotate while rotating around it.

The connecting portion 2 and the door frame hinge 31 are rotatably coupled by a hinge 92, the hinge 92 rotatably penetrating the center of the fixed gear (9) of the bearing of the door frame hinge (31) Or coupled to the bushing.

In addition, the connection part 2 has an attachment piece 24 which can be fixedly attached to the upper end of the door 3 by a screw or the like and extends to one side of the upper plate 21.

And the hydraulic cylinder is filled in the fixed cylinder (4) of the operating body (1) to control the lifting operation of the operating port (6), the lower end of the fixed cylinder (4) is closed cap 41 screw It is fastened.

On the other hand, the operating body (1) is provided with packings for preventing the leakage of hydraulic pressure.

The operation of the present invention configured as described above will be described.

As shown in the drawings, the embodiment of the present invention is applied to a door having a structure in which the left side of the door is hinged and the right side is opened and closed when viewed from the outside of the door 3. When the attachment piece 24 is fixedly attached with a screw in the state inserted into the upper end of the door 3, the connection part 2 is installed in a state where it protrudes to one side.

First, the operating opening 6 of the operating body 1 in the state in which the door 3 is closed is maximized until the lower end of the vertical groove 64 is caught by the support pin 67 by the elastic force of the spring 7. In the case of the rotary cylinder 5, the support pin 67 is located at one end of the horizontal guide groove 57 (see Fig. 5) and the upper portion of the inclined guide groove 58 (Fig. 5). 6), the sliding pin 68 is maintained.

When the door 3 is opened in the above state, the connecting part 2 rotates from the hinge 92 as a starting point (see FIG. 4), and the fixed gear 9 is fixed to the door frame hinge 31. The idle gear 8 is rotated while being engaged with the fixed gear 9, and the rotational force of the idle gear 8 is transmitted to the rotary gear 51 so that the rotary gear 51 is in one direction (in the drawing). Counterclockwise).

When the rotary gear 51 is rotated as described above, the rotary cylinder 5 also rotates in the same direction, while the operating tool 6 is inserted into the vertical groove 64 through the horizontal guide groove 57. It cannot be rotated by the pin 67. Accordingly, as the rotary cylinder 5 rotates, the horizontal guide groove 57 rotates while leaving the support pin 67 intact, while the inclined guide groove 58 underneath the sliding pin 68 inserted into the upper portion thereof. As it is rotated while descending to the lifting hole 66 to which the sliding pin 68 is inserted, the operating hole 6 which is elastically supported by the spring 7 is elastically lowered. When it is lowered, the hydraulic pressure filled under the operating hole (6) is moved to the upper side, so that the lowering operation of the operating hole (6) is made smoothly, the opening operation of the door (3) is also made smoothly. (See Figure 3)

When the force is removed from the door 3 in which the opening operation is completed by the operation of the operation body 1 as described above, the spring 7 that is elastically compressed during the opening operation is operated by the elastic force to return to its original state. In this case, since the ball valve 62 closes the hydraulic passage 61 when the operation opening 6 starts the upward operation, the hydraulic pressure is the upper hydraulic access hole 55a and the plurality of lower hydraulic access holes. Since the state is moved downward through the 55b, the upper end of the operating port 6 rises quickly before passing through the lower hydraulic access hole 55b, so that the door 3 is also quickly closed and the lower side is made. As the hydraulic access holes pass from the bottom to the bottom, the moving amount of the hydraulic pressure gradually decreases, so that the operation speed of the operation hole 6 gradually decreases, and thus the closing speed of the door 3 gradually decreases. When the upper end of the operating port (6) passes through all of the lower hydraulic access hole 55b, a small amount of hydraulic pressure is moved only by the upper hydraulic access hole 55a through the vertical passage 56 and the hydraulic passage 54. Since the operating port 6 is raised more slowly, therefore, the door 3 also closes very slowly just before the closing operation is completed.

On the other hand, when the operating mechanism (6) ascending operation by the elastic restoring force of the compressed spring (7) as described above, while the sliding pin 68 in the lower portion of the inclined guide groove 58 is raised, the inclined guide groove Since the 58 is pushed out, the rotating cylinder 5 rotates in the opposite direction (clockwise in the drawing) as in the closing operation to return to the original closing state (see FIG. 2) to wait for the next opening operation.

According to the present invention as described above, the door check the cylindrical operation body is embedded in the top of the door concealed, the hinge is coupled to the door frame hinge fixed to the door frame integrally coupled to the upper end of the operation body As a structure, the operating body embedded in the upper end of the door allows the opening operation of the door while the closing operation is performed automatically and at the same time has the effect of serving as a pivot hinge function, in particular Since the door check can be installed when manufacturing the door, there is no need to perform special construction for attaching the door check after installing the door as in the prior art, and do not damage the door because the door does not need to be drilled to attach the door check. It is a useful invention to provide a new door check with the advantage of not being.

Claims (3)

A fixed cylinder vertically buried at the top of the door, a rotating cylinder inserted rotatably in the fixed cylinder, and having a horizontal guide groove and an inclined guide groove formed on the lower side up and down; A hydraulic passage is formed in the upper part and a ball valve is installed at an upper end thereof, and a vertical groove formed vertically toward the bottom in the middle and an operating hole having a thread formed at the lower end thereof, and a through hole formed at one side of the lower end of the operating hole. A support that is slidably inserted into and supports a spring installed on an outer circumference of the operating tool by a support pin inserted into the vertical groove of the operating tool through the horizontal guide groove of the rotating cylinder and the through hole, and a lower end of the operating tool. Screwed to the threaded portion, through which the sliding hole is fitted through the inclined guide groove of the rotating cylinder is formed As the rotating cylinder rotates, the lifting hole for elastically elevating the operation tool while lifting up and down inclined in the inclined guide groove, and is fixed to the upper end of the rotating cylinder is configured to rotate the rotating cylinder Working body; An upper gear and a lower plate fixedly attached to upper and lower ends of the fixed cylinder of the operation body, and idle gears that are engaged with the rotary gears of the operation body while being rotatably installed in the middle of the gear chamber formed between the upper and lower plates; A connection part comprising a fixed gear positioned at an end of the gear chamber between the upper and lower plates and fixed to the door frame hinge while being engaged with the idle gear; The operation body is buried in the upper end of the door, the connection portion door door, characterized in that protruding from the top of the door. The method of claim 1, A hydraulic path is formed at a lower portion of the rotary gear fixed to the upper end of the rotating cylinder of the operating body, and an upper hydraulic access hole is formed at the upper end of the fixed cylinder to communicate with the hydraulic passage. Door check, characterized in that the lower hydraulic access hole is formed in the lower side configured to circulate the hydraulic pressure filled in the operating body. The method of claim 1, Door check, characterized in that the attachment plate which can be fixedly attached to the upper end of the door by extending the upper plate of the connecting portion.