KR101541373B1 - Door closer - Google Patents

Abstract

The present invention relates to a door closure capable of controlling the rotational speed and selectively blocking or adjusting the rotational force. A door closure according to an embodiment of the present invention comprises a hinge housing, a coupling unit, a control unit and a speed control unit. The hinge housing has a first body portion having a first coupling portion and a second coupling portion having a second coupling portion and a third coupling portion located at both ends of the first coupling portion and hinge-rotating with the first body portion. The coupling unit is provided in the first coupling portion, and one end of the torsion spring is engaged. The adjusting unit is provided in the second engaging part, and the other end of the torsion spring is engaged and selectively transmits the elastic force of the torsion spring to the second body part. The speed control unit is provided in the third coupling unit and coupled to the coupling unit. The rotational speed of the first body unit or the second body unit is variably controlled in each section by the damping force of the viscous fluid accommodated inside.

Description

DOOR CLOSER

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door closure, and more particularly, to a door closure capable of controlling a rotational speed and selectively blocking or adjusting rotational force.

Generally, a door closure is used to control the rotational force of a door, a lid, a lid or the like so as to prevent a door or a lid from being suddenly closed or automatically closed.

The door closer includes a damper function for providing a rotational force to allow the door or the cover to rotate, and a damping force for preventing sudden rotation of the door or the cover have.

The damper can be largely divided into an elastic member type using an elastic member such as a torsion spring and a viscous fluid type using a viscous fluid to impart a damping force.

A damper to which an elastic member system is applied is disclosed in Korean Patent Laid-Open Publication No. 1988-0014508. The damper includes a casing, a shaft rotatably inserted into the casing and having one end protruded therefrom, and a damper installed between the casing and the shaft to provide a damping force And a torsion spring.

However, such a damper using a torsion spring has a problem that it can not be used when it is desired to selectively transmit the elastic force of the torsion spring or when the magnitude of the elastic force of the torsion spring is to be adjusted.

On the other hand, Korean Patent Registration No. 0414520 is disclosed as a damper using a viscous fluid system. However, there is a problem in that it is impossible to control the damping force because it is difficult to control the damping force in accordance with the rotational force for rotating the application object using the conventional viscous fluid system.

In the conventional oil damper using the viscous fluid method, many parts are formed inside the housing in order to obtain the damping force due to the sealing and rotation of the viscous fluid, so that the structure is complicated and the assembly process is complicated and the productivity is low .

In order to solve the above problems, the present invention provides a door closure capable of controlling the rotation speed and selectively blocking or controlling the rotational force.

According to an aspect of the present invention, there is provided a portable terminal including a first body portion having a first coupling portion, a second coupling portion and a third coupling portion positioned at both ends of the first coupling portion, A hinge housing having a body portion and a second body portion which is hinged; A coupling unit which is provided in the first coupling unit and to which one end of the torsion spring is coupled; A control unit provided in the second coupling unit and coupled to the other end of the torsion spring and selectively transmitting the elastic force of the torsion spring to the second body unit; And a speed control unit that is provided in the third coupling unit and is coupled to the coupling unit and controls the rotational speed of the first body part or the second body part by variable according to the interval by the damping force of the viscous fluid received in the inside, And a door closer.

According to an embodiment of the present invention, the adjusting unit may include a first accommodating portion coupled to the second engaging portion, a fixture provided on the inside of the first accommodating portion and coupled with the other end of the torsion spring, A first stopper which is rotatably coupled to one end of the first accommodating portion; a second stopper which is located on the inner side of the first accommodating portion and whose upper portion is screwed with the first stopper and whose lower portion is engaged with the fixture, And may have a switch unit for selectively transmitting the switch unit.

According to an embodiment of the present invention, the switch unit may include a first engaging member coupled to the fixture and having a first ratchet formed on an upper surface thereof, a second engaging member engaged with the first ratchet, The ratchet is formed on an outer surface of the first receiving portion and a second coupling portion is formed on an inner side of the first receiving portion to form a guide protrusion coupled to a guide groove formed in the longitudinal direction. And may be moved in the longitudinal direction of the first receiving portion to be selectively ratchet-engaged with the first coupling portion.

In one embodiment of the present invention, one end of the adjusting unit is in close contact with the engaging jaw formed on the inner side of the first accommodating portion, and the other end is in close contact with the lower surface of the first engaging portion, And may have an elastic member elastically supported by the coupling hole.

In one embodiment of the present invention, the first adjusting groove may be formed at one end of the fixing member to which the rotating member for rotating the fixing member is coupled.

In one embodiment of the present invention, a first exposing hole may be formed at the center of the first stopper so that the first adjusting groove is exposed to the outside.

In one embodiment of the present invention, the second adjusting groove, to which the rotating member for rotating the first stopper is coupled, may be formed on the outer circumferential surface of the head of the first stopper at regular intervals along the circumferential direction.

In an embodiment of the present invention, a knurling may be formed on an outer peripheral surface of the head of the first stopper.

According to an embodiment of the present invention, the first accommodating portion and the second engaging portion are coupled by a first engaging piece, and the first engaging piece is formed on an outer surface of the first accommodating portion along a circumferential direction. A second strip formed on the outer surface of the first strip at regular intervals along the longitudinal direction of the first strip and formed along the circumferential direction on the inner surface of the second strip, And a first hook that hooks on the groove.

According to an embodiment of the present invention, a first locking protrusion may be formed on the outer circumferential surface of the first accommodating portion in a longitudinal direction of the first accommodating portion so as to be inserted into a first insertion groove formed in the second engaging portion.

In one embodiment of the present invention, the speed control unit includes a second accommodating portion coupled to the third engaging portion, the viscous fluid accommodated in the second accommodating portion, and a second accommodating portion provided inside the second accommodating portion, A first pin which is provided between an outer circumferential surface of the shaft portion and an inner circumferential surface of the second accommodating portion and is engaged with a first engaging groove formed on an inner circumferential surface of the second accommodating portion, Which is provided between an outer circumferential surface of the shaft portion and an inner circumferential surface of the second accommodating portion and which is coupled to a second engagement groove formed on an outer circumferential surface of the shaft portion and rotates together with the shaft portion, 2 pin, an adjuster inserted into the shaft portion, and a second stopper coupled to the second accommodating portion and supporting the rotation of the shaft portion.

In one embodiment of the present invention, the first receiving groove is formed on the inner circumferential surface of the second receiving portion with a first depth and a first width on one side of the first receiving groove, The second receiving groove may have a second depth that is deeper than the first depth, a second width that is wider than the first width, and a predetermined length along the circumferential direction on the other side of the first latching groove.

In one embodiment of the present invention, the shaft portion may include a receiving hole formed at a central portion in the axial direction to receive the viscous fluid, and a receiving hole formed at one side of the outer peripheral surface of the shaft portion with respect to the second receiving groove, A first through hole connecting the ball to the outside and a second through hole formed on the other side of the outer circumferential surface of the shaft portion with respect to the second receiving groove so as to connect the receiving hole with the outside, Lt; / RTI >

In an embodiment of the present invention, the control hole may be inserted into the receiving hole to adjust the opening area of the second through hole.

According to an embodiment of the present invention, a third adjusting groove may be formed at one end of the adjusting member to which the rotating member for rotating the adjusting member is coupled.

According to an embodiment of the present invention, the second accommodating portion and the third engaging portion are coupled by a second engaging piece, and the second engaging piece is formed on an outer surface of the second accommodating portion along a circumferential direction. A third strip formed on the outer surface of the second strip at regular intervals along the longitudinal direction of the second strip and formed along the circumferential direction on the inner surface of the third strip, And a second hook that engages the groove.

According to an embodiment of the present invention, a second locking protrusion may be formed in the outer circumferential surface of the second receiving portion to be inserted into the second insertion groove formed in the third coupling portion, in the longitudinal direction of the second receiving portion.

According to an embodiment of the present invention, a first engagement groove is formed in the circumferential direction on the outer peripheral surface of the first accommodating portion of the adjustment unit, a second engagement groove is formed in the circumferential direction on the inner peripheral surface of the second engagement portion, The engagement of the regulating unit and the second engaging portion can be facilitated by engaging the first engaging piece having the first hook formed in the groove and the second engaging groove. Further, a third coupling groove is formed on the outer peripheral surface of the second accommodating portion of the speed control unit, a fourth coupling groove is formed on the inner peripheral surface of the third coupling portion, and a second hook is formed in the third coupling groove and the fourth coupling groove By coupling the second engagement piece, the engagement of the speed control unit and the third engagement portion can be facilitated.

According to an embodiment of the present invention, the switch portion of the control unit is constituted by a first engagement portion and a second engagement portion, to which the first and second engagement portions are ratchetically engaged, The resilient force of the torsion spring connected to the first body part can be selectively transmitted to the second body part. Thus, the user can select whether or not the door is closed automatically.

Also, according to an embodiment of the present invention, the twist of the torsion spring can be adjusted by rotating the fastener of the adjustment unit, thereby adjusting the magnitude of the resilience of the torsion spring.

According to an embodiment of the present invention, the first receiving groove and the second receiving groove are formed on the inner surface of the second receiving portion at different depths and widths. Since the viscous fluid pressurized by the second pin, which rotates together with the shaft during rotation, moves through the first receiving groove or the second receiving groove and generates different damping forces, the first body portion or the second body The rotational speed of the negative portion can be variably controlled for each section.

Further, according to an embodiment of the present invention, the knurling is formed on the head of the first stopper, thereby providing the effect of conveying the use (rotation) of the first stopper by highlighting the visual image to the user.

It should be understood that the effects of the present invention are not limited to the above effects and include all effects that can be deduced from the detailed description of the present invention or the configuration of the invention described in the claims.

1 is a perspective view illustrating a door closure according to an embodiment of the present invention.
2 is an exploded perspective view illustrating a door closure according to an embodiment of the present invention.
3 is a plan view illustrating an example of a combination of a second body portion, a control unit, and a speed control unit of a door closure according to an embodiment of the present invention.
4 is a view illustrating a state where a second body portion of a door closure, an adjustment unit, and a speed control unit are combined according to an embodiment of the present invention.
5 is a perspective view illustrating a first coupling piece of a door closure according to an embodiment of the present invention.
FIG. 6 is an exploded perspective view showing a control unit of a door closure according to an embodiment of the present invention. FIG.
Figure 7 is a perspective view of a closure of a conditioning unit of a door closure according to an embodiment of the present invention.
FIG. 8 is an exemplary view showing an operation example of a door closing control unit according to an embodiment of the present invention.
9 is a perspective view illustrating a door control unit of a door closure according to an embodiment of the present invention.
10 is an exploded perspective view showing a door control unit of a door closure according to an embodiment of the present invention.
11 is a cross-sectional exemplary view showing a second accommodation portion of the speed control unit of the door closer according to the embodiment of the present invention.
12 is a perspective view showing a shaft portion of a speed control unit of a door closer according to an embodiment of the present invention.
13 and 14 are diagrams illustrating an example of operation of a door closer control unit according to an embodiment of the present invention.
15 is a cross-sectional view illustrating an example of operation of a regulator of a speed control unit of a door closer according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when a part is referred to as being "connected" to another part, it includes not only "directly connected" but also "indirectly connected" . Also, when an element is referred to as "comprising ", it means that it can include other elements, not excluding other elements unless specifically stated otherwise.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view of a door closure according to an embodiment of the present invention. FIG. 2 is an exploded perspective view illustrating a door closure according to an embodiment of the present invention. FIG. 4 is a perspective view illustrating a state in which the second body portion of the door closer according to the embodiment of the present invention, the control unit and the speed control unit are combined And FIG. 5 is a perspective view illustrating a first engagement piece of a door closure according to an embodiment of the present invention

As shown in FIGS. 1 to 5, the door closer may include a hinge housing 100, a coupling unit 200, a control unit 400, and a speed control unit 600.

The hinge housing 100 includes a first body 110 having a first engaging portion 111 and a second engaging portion 121 disposed at both ends of the first engaging portion 111, And a second body portion 120 having a hinge portion 122 formed therein and hinged to the first body portion. The coupling unit 200 may be provided in the first coupling part 111, and one end of the torsion spring 300 may be coupled. The adjustment unit 400 may be provided on the second coupling portion 121 and may be coupled to the other end of the torsion spring 300 to selectively transmit the elastic force of the torsion spring 300 to the second body portion 120 . The speed control unit 600 is provided in the third coupling unit 122 and may be coupled to the coupling unit 200. The speed control unit 600 may be coupled to the first body 110 or the second body 110 by the damping force of the viscous fluid received therein. The rotational speed of the two body parts 120 can be variably controlled for each section.

In detail, the hinge housing 100 may have a first body portion 110 and a second body portion 120.

The first body part 110 may have a first coupling part 111 at the center of the side surface and the second coupling part 121 and the third coupling part 122 may be spaced apart from the side surface of the second body part 120 . The first and second coupling portions 121 and 122 may be located at both ends of the first coupling portion 111. The first and second body portions 110 and 120 may be disposed at both ends of the first coupling portion 111, Second, and third engaging portions 111, 121, and 122, respectively.

The first body part 110 and the second body part 120 are fastened to fasteners (not shown) to be fastened to a fixing body (e.g., a wall) and a rotating body (e.g., a door) (Not shown). Accordingly, the hinge housing 100 can rotate the rotating body about the fixed body.

The first coupling unit 111 may be provided with a coupling unit 200. The coupling unit 200 can be inserted into and fixedly coupled to the first coupling unit 111 so that the coupling unit 200 can rotate together with the first body 110 when the first coupling unit 200 rotates. One end 310 of the torsion spring 300 may be coupled to the coupling unit 200.

In addition, the second coupling portion 121 may be provided with a control unit 400.

A first latching protrusion 411 may be formed in the longitudinal direction on the outer circumferential surface of the first receiving portion 410 of the control unit 400. The first insertion groove 123 may be formed in the second engagement portion 121 and the first engagement protrusion 411 may be inserted into the first insertion groove 123. The adjusting unit 400 can be integrally coupled to the second engaging part 121 by fixing the first engaging protrusion 411 to the first inserting groove 123 so that the adjusting unit 400 and the second The body portion 120 can rotate integrally. The first engaging protrusion 411 has a function of preventing the first accommodating portion 410 from being coupled to the second engaging portion 121 and rotating the first engaging portion 410, It is possible to easily grasp the assembling position and the assembling direction.

A first coupling groove 412 may be formed in the outer surface of the first accommodating portion 410 along the circumferential direction. A second coupling groove 124 may be formed in the inner surface of the second coupling portion 121 along the circumferential direction. The first engaging groove 412 and the second engaging groove 124 may be formed at positions corresponding to each other.

The first coupling piece 500 may be coupled to the first coupling groove 412 and the second coupling groove 124.

The first engaging piece 500 may include a first strip 510 and a first hook 520. The first strip 510 may be coupled to the first engaging groove 412. [ The first strip 510 may be formed with both ends spaced apart from each other by a predetermined distance, and may be made of a material having an elastic force. Accordingly, the first strip 510 can be expanded and contracted and can be tightly coupled to the first coupling groove 412.

The first hooks 520 may be formed at regular intervals along the longitudinal direction of the first strips 510. In addition, the first hook 520 may be formed to be inclined upward to one side.

When the first receiving portion 410 is inserted into the second engaging portion 121, the first hook 520 of the first engaging piece 500 coupled to the first engaging groove 412 is pressed The first accommodating portion 410 can be easily inserted into the second engaging portion 121. When the first engaging piece 500 is positioned in the second engaging groove 124, the first hook 520 is returned to its original shape by the elastic force and is caught by the second engaging groove 124, 400 are not separated from the second engaging portion 121.

The other end 320 of the torsion spring 300 may be coupled to the adjustment unit 400.

The coupling unit 200 and the control unit 400 can be rotated by the elastic restoring force of the torsion spring 300 and the first body part 110 and the second body 120 can be rotated.

The third coupling unit 122 may be provided with a speed control unit 600.

A second locking protrusion 611 may be formed in the longitudinal direction on the outer circumferential surface of the second accommodating portion 610 of the speed control unit 600. The second engaging groove 125 may be formed in the third engaging portion 122 and the second engaging projection 611 may be inserted into the second engaging groove 125. The speed control unit 600 can be integrally coupled to the third engaging part 122 by being fixedly coupled to the second inserting groove 125 by the second locking protrusion 611, And the second body part 120 can rotate integrally. The second engaging protrusion 611 has a function of preventing the second accommodating portion 610 from being coupled to the third engaging portion 122 and rotating the second engaging portion 611. The second engaging protrusion 611 is provided between the third engaging portion 122 and the second accommodating portion 610 It is possible to easily grasp the assembling position and the assembling direction.

A third coupling groove 612 may be formed in the outer surface of the second accommodating portion 610 along the circumferential direction. A fourth coupling groove 126 may be formed in the inner surface of the third coupling portion 122 along the circumferential direction. The third coupling groove 612 and the fourth coupling groove 126 may be formed at positions corresponding to each other.

The second engaging piece 550 may be coupled to the third engaging groove 612 and the fourth engaging groove 126.

The second engagement piece 550 may be composed of a second strip 560 and a second hook 570 and the second strip 560 may be coupled to the third engagement groove 612. The second strip 560 may be formed such that both ends thereof are spaced apart from each other by a predetermined distance, and may be made of a material having an elastic force. Accordingly, the second strip 560 can be expanded and contracted and can be tightly coupled to the third coupling groove 612.

The second hooks 570 may be formed at regular intervals along the longitudinal direction of the second strip 560. In addition, the second hook 570 may be formed to be inclined upward to one side.

When the second receiving portion 610 is inserted into the third engaging portion 122, the second hook 570 of the second engaging piece 550 coupled to the third engaging groove 612 is pressed The second accommodating portion 610 can be easily inserted into the third engaging portion 122. When the second engaging piece 550 is positioned in the fourth engaging groove 126, the second hook 570 is returned to its original shape by the elastic force, and the second hook 570 is returned to the fourth engaging groove 126, the speed control unit 600 is not released from the third engaging portion 122. [

The first engaging groove 412 and the third engaging groove 612 may be formed to have the same size and shape and the second engaging groove 124 and the fourth engaging groove 126 May be formed in the same size and shape, and the first engaging piece 500 and the second engaging piece 550 may be formed to have the same size and shape.

FIG. 6 is an exploded perspective view showing a door closing unit according to an embodiment of the present invention, FIG. 7 is a perspective view showing a first door of the door closing unit according to an embodiment of the present invention, FIG. FIG. 2 is an exemplary view showing an example of operation of a control unit of a door closure according to an embodiment of the present invention; FIG.

6 to 8, the adjustment unit 400 may have a first accommodating portion 410, a fixture 420, a first stopper 430, and a switch portion 450.

The first engaging protrusion 411 and the first engaging recess 412 may be formed on the outer circumferential surface of the first accommodating portion 410 forming the body of the regulating unit 400. [ In addition, the first accommodating portion 410 may be formed to pass through in the axial direction, and a space may be formed on the inner side, and a latching jaw 413 may be formed on the inner side. An elastic member 460, which will be described later, may be located on the latching jaw 413.

The fastener (420) may be provided inside the first accommodating portion (410). A first adjusting groove 421 may be formed at one end of the fixing member 420 and a rotating member (not shown) may be coupled to the first adjusting groove 421 to rotate the fixing member 420. Here, the rotating member may be a tool such as a wrench, and the first adjusting groove 421 may be formed in a hexagonal shape to facilitate the engagement of the wrench.

The latching part 422 may be formed at the other end of the fixture 420 and the other end 320 of the torsion spring 300 may be coupled to the latching part 422.

The fastener 420 may have a coupling surface 423 formed thereon. The engaging surface 423 may be formed to have a hexagonal or rectangular cross-sectional shape.

The first stopper 430 may be rotatably coupled to one end of the first accommodating portion 410. The first stopper 430 may have a first support groove 431 and the first support groove 431 may have a support ring 440 inserted therein. The support ring 440 may be inserted into the second support groove 414 formed in the first accommodating portion 410. The support ring 440 is coupled to the first support groove 431 at the inner side and coupled to the second support groove 414 at the outer side to prevent the first stopper 430 from being separated from the first accommodation portion 410 So that the first stopper 430 can rotate left and right in a fixed state.

A first exposure hole 432 may be formed at the center of the first stopper 430 and the first adjustment recess 421 may be exposed to the outside through the first exposure hole 432. [ The rotating member such as the above-described wrench may be inserted into the first adjusting groove 421 through the first exposure hole 432 from the outside.

A knurling 434 may be formed on the outer peripheral surface of the head 433 of the first stopper 430. The knurling 434 formed on the outer circumferential surface of the head 433 can provide an effect of conveying the application (rotation) of the first stopper 430 by highlighting a visual image to the user.

A second adjusting groove 435 may be formed on an outer circumferential surface of the head 433 of the first stopper 430 so that a rotating member (not shown) for rotating the first stopper 430 may be coupled. The second adjusting groove 435 may be formed in a radial direction, and a plurality of second adjusting grooves 435 may be formed at regular intervals along the circumferential direction of the head 433. Accordingly, when the user can not rotate the first stopper 430 by hand, the first stopper 430 can be rotated by inserting and coupling the rotating member into the second adjusting recess 435.

The first stopper 430 may be applied through a left-hand thread applying a rotational direction in consideration of the general habit of the user, but the present invention is not limited thereto, and a coupling method using a right-hand thread may be applied.

On the other hand, the switch unit 450 can be located inside the first accommodating unit 410. The upper portion of the switch portion 450 may be screwed to the first stopper 430 and the lower portion thereof may be coupled with the stopper 420 to selectively transmit the rotational force of the stopper 420.

In detail, the switch unit 450 may include a first coupling member 451 and a second coupling member 455.

The first coupling member 451 is formed so that the inner side surface 452 corresponds to the coupling surface 423 of the fixing member 420 and can be coupled to the coupling surface 423 through which the first coupling member 451, Can be rotated integrally with the fixture 420. Further, the first ratchet 453 may be formed on the upper surface of the first coupling member 451.

The second engagement hole 455 may be formed with a second screw thread 456 that is screwed to the first screw thread 436 of the first stopper 430. Accordingly, And can be screwed with the first stopper 430. A guide protrusion 457 may be formed on the outer surface of the second coupling hole 455 to be coupled to the guide groove 415 formed in the longitudinal direction inside the first accommodating portion 410. Accordingly, when the first stopper 430 rotates, the second engagement hole 455, in which the guide protrusion 457 is coupled to the guide groove 415 of the first accommodating portion 410, So that it can move in the longitudinal direction. The second coupling hole 455 is reciprocated in the longitudinal direction of the first accommodating portion 410 in accordance with the rotation direction of the first stopper 430.

A second ratchet 458 coupled to the first ratchet 453 may be formed on the lower surface of the second coupling hole 455.

And, the regulating unit 400 may have an elastic member 460. Fig. One end of the elastic member 460 may be in close contact with the engagement protrusion 413 formed on the inner side of the first accommodating portion 410 and the other end of the elastic member 460 may be in close contact with the lower surface of the first engagement hole 451, 451 may be elastically supported by the second coupling member 455. In this way, the first ratchet 453 and the second ratchet 458 can be stably coupled.

As the first stopper 430 rotates, the second engaging member 455 moves in the longitudinal direction of the first accommodating unit 410 while the second engaging member 455 moves in a direction perpendicular to the first engaging member 451, Lt; / RTI > That is, the second ratchet 458 of the second coupling port 455 may or may not be engaged with the first ratchet 453 of the first coupling port 451.

As shown in FIG. 8A, when the second ratchet 458 and the first ratchet 453 are engaged, the one end 310 of the torsion spring 300 is engaged with the coupling unit 200 (see FIG. 2) The resilient restoring force of the torsion spring 300 is transmitted to the first body portion 110 (see FIG. 2) of the hinge housing 100 (see FIG. 1) since the other end portion 320 is coupled to the fastener 420 And the second body portion 120 (see FIG. 2).

However, as shown in FIG. 8B, when the first stopper 430 is rotated so that the second engagement hole 455 is moved so that the second ratchet 458 and the first ratchet 453 are not engaged The first engaging member 451 is rotatable together with the fixing member 420. That is, since the other end 320 of the torsion spring 300 is freely rotatable, the elastic restoring force of the torsion spring 300 is not generated, and the elastic restoring force is applied to the second body portion 120 It can not be delivered.

The resilient restoring force of the torsion spring 300 may be set such that the door to which the hinge housing is coupled is initially rotated in the closing direction. The rotation of the door can be realized by coupling the first ratchet 453 and the second ratchet 458 to each other so that the elastic restoring force of the torsion spring 300 is transmitted to the hinge housing. Therefore, when the user does not want to use the elastic restoring force, the rotational force for rotating the door by rotating the first stopper 430 and releasing the engagement between the first ratchet 453 and the second ratchet 458 You can simply remove it.

The first engagement groove 451 is rotatably coupled with the second engagement hole 455 by rotating the fastener 420 in one direction by coupling a rotation member such as a wrench to the first adjustment groove 421 have. The torsion spring 300 is rotated while the other end 320 of the torsion spring 300 coupled to the fixture 420 rotates, Is further wound. Accordingly, the resilient restoring force of the torsion spring 300 can be further increased, and the rotational force of the door can be further increased.

FIG. 10 is an exploded perspective view of a speed control unit of a door closure according to an embodiment of the present invention, and FIG. 11 is a perspective view of a door closer according to an embodiment of the present invention. Fig. 12 is a perspective view showing a shaft portion of a speed control unit of a door closer according to an embodiment of the present invention, and Figs. 13 and 14 are perspective views showing a second accommodation portion of a door closure speed control unit according to an embodiment, 14 is an exemplary view showing an example of the operation of the door closure speed control unit according to an embodiment of the present invention, and Fig. 15 is a sectional view showing an example of the operation of the control member of the door closing control unit according to the embodiment of the present invention Fig.

9 to 15, the speed control unit 600 includes a second accommodating portion 610, a shaft portion 620, a first pin 630, a second pin 640, an adjuster 650, And may have a second stopper 660.

The second engaging protrusion 611 and the third engaging groove 612 are formed on the outer peripheral surface of the second accommodating portion 610 forming the body of the speed control unit 600 so that the third engaging portion 122 ). ≪ / RTI >

In addition, the second accommodating portion 610 is formed to penetrate in the axial direction, and a space can be formed on the inner side to accommodate the viscous fluid. 11, a first latching groove 613 may be formed on the inner circumferential surface of the second accommodating portion 610. The first latching groove 613 may be formed in the longitudinal direction of the second accommodating portion 610 and may be rounded. The first engaging groove 613 may have a first curved surface portion 614. The first latching groove 613 may be formed in an angular shape as well as the rounded shape described above.

The first receiving groove 616 may be formed on one side of the inner circumferential surface of the second receiving portion 610 with respect to the first receiving groove 613 and the first receiving groove 616 may be formed on the other side of the first receiving groove 613, 2 receiving grooves 617 can be formed.

15, the first receiving groove 616 may be formed to have a predetermined length along the circumferential direction at a first depth D1 and a first width W1, and the second receiving groove 617 may be formed at a second depth And may have a predetermined length along the circumferential direction at a depth D2 and a second width W2. Here, the second depth D2 may be deeper than the first depth D1, and the second width W2 may be wider than the first width W1.

In addition, a shaft portion 620 may be provided inside the second accommodating portion 610, and the shaft portion 620 may be rotatably provided.

The connecting portion 621 may be formed at one end of the shaft portion 620 and the connecting hole 621 may be exposed to the outside of the second receiving portion 610 and may be coupled to the coupling unit 200 have. Through this, the shaft portion 620 can be rotated together with the coupling unit. That is, the shaft portion 620 is integrally rotatable with the first body portion 110 (see FIG. 2) and includes a second receiving portion 610 that rotates integrally with the second body portion 120 (see FIG. 2) Respectively.

The first pin 630 may be provided between the outer circumferential surface of the shaft portion 620 and the inner circumferential surface of the second accommodating portion 610 by being engaged with the first engaging groove 613 formed on the inner circumferential surface of the second accommodating portion 610 . The first pin 630 may have a second curved surface portion 631 and the second curved surface portion 631 may be formed to correspond to the first curved surface portion 614 of the first retaining groove 613. The first pin 630 is not completely fixed to the first locking groove 613 but has a clearance tolerance with the first locking groove 613 so that the first pin 630 can be moved by such a tolerance. The inner circumferential surface of the first pin 630 may be formed so as to correspond to the outer circumferential surface of the shaft portion 620 so that the shaft portion 620 can be formed in a state where the first pin 630 is positioned in the first engagement groove 613 It becomes possible to rotate naturally.

The second engaging groove 622 may have a third curved surface portion 623 and the second engaging groove 622 may have a third curved surface portion 623. A groove 629 may be formed on the outer peripheral surface of the shaft portion 620. The groove 629 may be formed deeper than the second latching groove 622.

The second pin 640 may be coupled to the second engaging groove 622 and may be provided between the outer circumferential surface of the shaft portion 620 and the inner circumferential surface of the second accommodating portion 610 and the second pin 640 may be provided between the shaft portion 620 ). ≪ / RTI > The second pin 640 may have a fourth curved surface portion 641 and the fourth curved surface portion 641 may be formed to correspond to the third curved surface portion 623 of the second retaining groove 622. The second pin 640 is not completely fixed to the second engaging groove 622 but has an allowance margin with respect to the second engaging groove 622 so that the second pin 640 can be moved by such a tolerance.

FIG. 13 shows an operation example of a speed control unit when a door (not shown) coupled with a door closer according to an embodiment of the present invention rotates so as to open. FIG. 14 shows an example in which the door is rotated And an operation example of the speed control unit. Hereinafter, a first body portion 110, which rotates integrally with the shaft portion 620, is coupled to the door, a second body portion 120 to which the second accommodation portion 610 is coupled is coupled to the wall (fixed body) Lt; / RTI > However, in the following description, the first body part 110, which rotates integrally with the shaft part 620, is coupled to the wall, and the second body part 120, to which the second accommodation part 610 is coupled, And can have the same operating mechanism even when coupled to the door.

As shown in FIG. 13 (a), in a state in which the door is closed, the viscous fluid F accommodated in the second accommodating portion 610 has an equilibrium pressure.

However, as shown in FIG. 13 (b), when the shaft portion 620 rotates in the clockwise direction in conjunction with rotation of the door in the opening direction (clockwise direction), the second pin (640) also rotates clockwise. As the second pin 640 rotates in the clockwise direction, the viscous fluid F1 in front of the rotational direction of the second pin 640 and between the first pin 630 is pressed. Accordingly, the first pin 630 can move in the clockwise direction while being caught in the first engagement groove 613 by the pressure of the viscous fluid F1 to be pressed. At this time, the first pin 630 can be moved by the allowance tolerance with the first engaging groove 613, so that the second curved portion 631 of the first pin 630 and the first engaging groove 613 A gap can be formed between the curved portions 614, and the viscous fluid can move through the gap. The viscous fluid moving between the first curved surface portion 614 and the second curved surface portion 631 can be moved through the second receiving groove 617.

Also, the second pin 640 can be moved in the counterclockwise direction by the margin of tolerance with the second engaging groove 622 by the pressure of the viscous fluid F1 to be pressurized. A gap can be formed between the fourth curved surface portion 641 of the second pin 640 and the third curved surface portion 623 of the second engaging groove 622 and the viscous fluid can move through the gap. In addition, the viscous fluid moving between the third curved surface portion 623 and the fourth curved surface portion 641 can be moved through the groove 629. [

As the viscous fluid F1 in front of the rotational direction of the second pin 640 and the first pin 630 moves to the rear space S1 in the rotational direction of the second pin 640, As shown in FIG. 13 (c), the second pin 640 is allowed to rotate until the door is completely opened.

Meanwhile, when the door is opened, for example, when the user releases the door, the door is rotated by the elastic restoring force of the torsion spring 300 (see FIG. 2).

Then, as shown in Fig. 14 (a), the fully opened door is rotated in the closing direction (counterclockwise direction) as shown in Fig. 14 (b).

When the shaft 620 rotates in the counterclockwise direction and the second pin 640 rotates counterclockwise, the viscous fluid in the forward space S2 in the rotational direction of the second pin 640 F2 are pressed. Accordingly, the first pin 630 can be moved in the counterclockwise direction while being caught by the first latching groove 613 by the pressure of the viscous fluid F2 to be pressurized. At this time, the first pin 630 can be moved by the margin tolerance with the first locking groove 613, and the second curved surface portion 631 of the first pin 630 is moved in the direction of the first locking groove 613 And is brought into close contact with the first curved surface portion 614. This makes it difficult for the viscous fluid F2 to be pressed to move through the first pin 630 to the rear space S3 in the rotational direction of the second pin 640. [

The second pin 640 can also be moved in the clockwise direction by the margin of tolerance with the second latching groove 622 by the pressure of the viscous fluid F2 being pressed. The fourth curved surface portion 641 of the second pin 640 is brought into close contact with the third curved surface portion 623 of the second engaging groove 622 so that the viscous fluid F2 to be pressed is pressed against the second fin It becomes difficult to move to the rear space S3 in the rotating direction of the second pin 640 through the second pin 640. [

The viscous fluid F2 thus pressurized is moved through the first receiving groove 616 formed in the inner peripheral surface of the second accommodating portion 610 so that the second pin 640 is rotated counterclockwise The rotation can be continued.

14 (c), when the second pin 640 is positioned at a portion where the first receiving groove 616 and the second receiving groove 617 are not formed, the pressurized viscous fluid The flow path of the second pin 640 is narrowed and the moving speed of the second pin 640 is reduced.

14 (d), when the second pin 640 is positioned at the position where the second receiving groove 617 is formed, the pressurized viscous fluid F2 is transferred to the second receiving groove 617 The rotation of the second pin 640 can be continued. At this time, since the second receiving groove 617 has a wider space than the first receiving groove 616, the second pin 640 is rotated at a higher speed than when rotating the portion where the first receiving groove 616 is formed It becomes possible to make a rotational movement.

That is, when the door rotates in the closing direction, the second pin 640 is closed at the first speed when passing through the portion where the first receiving groove 616 is formed. When the second pin 640 passes a portion where the first receiving groove 616 and the second receiving groove 617 are not formed, the second pin 640 is slowly closed at a speed lower than the first speed. Then, when the second pin 640 passes through the portion where the second receiving groove 617 is formed, the second pin 640 is closed at a second speed higher than the first speed, so that the door can be closed well. That is, the rotation speed of the first body part 110, which rotates integrally with the shaft part 620, can be variably controlled in each section.

The shaft portion 620 may have a receiving hole 625, a first through hole 626, and a second through hole 627.

The receiving hole 625 may be formed to have a predetermined length in the axial direction at the center of the shaft portion 620.

The first through hole 626 may be formed on one side of the outer circumferential surface of the shaft portion 620 with respect to the second engagement groove 622 formed on the outer circumferential surface of the shaft portion 620 to connect the receiving hole 625 to the outside.

The second through hole 627 may be formed on the other side of the outer circumferential surface of the shaft portion 620 with respect to the second engaging groove 622 to connect the receiving hole 625 to the outside. Here, the second through hole 627 may be formed at a different height from the first through hole 626. The first through hole 626 may be formed close to the connection hole 621 formed at one end of the shaft portion 620 and the second through hole 627 may be formed close to the other end of the connection hole 621.

When the shaft portion 620 is coupled to the second receiving portion 610, the viscous fluid received in the second receiving portion 610 passes through the first through hole 626 and the second through hole 627, As shown in FIG.

The adjuster 650 may be inserted into the other end of the shaft 620. The third screw thread 651 may be formed on the adjusting screw 650 and the third screw thread 651 may be screwed to the fourth screw thread 628 formed on the shaft portion 620, ). ≪ / RTI >

A third adjusting groove 652 may be formed at one end of the adjusting hole 650 to receive a rotating member (not shown) for rotating the adjusting hole 650. Here, the rotating member may be a wrench.

In addition, the adjuster 650 may have a body portion 653 that is inserted into the receiving hole 625 of the shaft portion 620. The control member 650 can move in the longitudinal direction of the shaft portion 620 according to the rotation direction of the control member 650 so that the body portion 653 can move in the second through hole 627 of the shaft portion 620, Can be adjusted.

15 (a), when the control member 650 does not seal the second through-hole 627, the viscous fluid flows through the first through-hole 626 and the second through-hole 627 to the shaft portion 620 Can be freely moved to the receiving hole 625 and the second receiving portion 610. [

In this state, when the door rotates so as to open as described above, the viscous fluid pressurized by the second pin 640 passes through the second through hole 627 positioned in front of the rotational direction of the second pin 640, Through the receiving hole 625 to the first through hole 626 located behind the second pin 640 in the rotational direction. Likewise, when the door rotates to close, the viscous fluid pressurized by the second pin 640 passes through the first hole 626, which is located in front of the rotational direction of the second pin 640, 625 to the second through hole 627 located behind the second pin 640 in the rotational direction. Accordingly, the damping force by the viscous fluid can be reduced when the second pin 640 is moved.

However, as shown in FIG. 15 (b), when the adjuster 650 hermetically seals the second through-hole 627, when the door rotates to be opened or closed, the second through- The movement of the viscous fluid becomes impossible. Accordingly, the damping force by the viscous fluid during the rotation of the shaft portion 620 can be increased. The damping force can be maximized when the second through hole 627 is completely closed by the adjusting member 650 and the damping force is small as the opening area of the second through hole 627 by the adjusting member 650 becomes large Can be. Accordingly, the damping force of the viscous fluid can be adjusted when the second pin 640 moves by adjusting the position of the adjuster 650 to adjust the opening area of the second through-hole 627.

Meanwhile, the second receptacle 660 may be coupled to the second receptacle 610. A fifth thread 661 may be formed on the second plug 660 and a fifth thread 661 may be threadably engaged with a sixth thread 618 formed on the second receiving portion 610, 660 may be coupled to the second receiving portion 610.

A second exposure hole 662 may be formed at the center of the second stopper 660 and the third control groove 652 of the control hole 650 may be exposed through the second exposure hole 662 to the outside . The rotation member such as the above-described wrench may be inserted through the second exposure hole 662 and coupled to the third control groove 652.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included within the scope of the present invention.

100: Hinge housing
200: coupling unit
300: Torsion spring
400: control unit
410: first receiving portion
412: first engaging groove
420: Fixture
430: first stopper
434: Knurling
435: second adjusting groove
450:
500: first engagement piece
550: second engagement piece
600: Speed control unit
610:
612: Third coupling groove
616: first receiving groove
617: second receiving groove
620:
622: second latching groove
626: First through hole
627: second through hole
629: Groove
630:
640: second pin
650: Regulator
660: second stopper

Claims (17)

A hinge housing having a first body portion in which a first coupling portion is formed and a second body portion in which a second coupling portion and a third coupling portion located at both ends of the first coupling portion are hinge-rotated with respect to the first body portion;
A coupling unit which is provided in the first coupling unit and to which one end of the torsion spring is coupled;
A control unit provided in the second coupling unit and coupled to the other end of the torsion spring and selectively transmitting the elastic force of the torsion spring to the second body unit; And
A speed control unit that is provided in the third coupling unit and is coupled to the coupling unit and controls the rotation speed of the first body part or the second body part in accordance with the interval by the damping force of the viscous fluid received inside, ≪ / RTI &
The adjustment unit includes a first accommodating portion coupled to the second engaging portion, a fixture provided inside the first accommodating portion and coupled to the other end of the torsion spring, And a switch unit coupled to the fixture and selectively transmitting the rotational force of the fixture, wherein the first stopper is located inside the first accommodating unit, the upper portion is screwed with the first stopper, Door closer. delete The method according to claim 1,
The switch unit
A first coupling unit coupled to the fixture and having a first ratchet formed on an upper surface thereof,
A second ratchet coupled to the first ratchet is formed on a lower surface of the first ratchet and a guide protrusion is formed on an outer surface of the first ratchet, And a second coupling port,
Wherein the second engagement opening is selectively ratchet-engaged with the first engagement opening by moving in the longitudinal direction of the first accommodation portion as the first stopper rotates. The method of claim 3,
The adjustment unit
Wherein the one end portion is in close contact with the engagement protrusion formed on the inner side of the first accommodation portion and the other end portion is in contact with the lower surface of the first engagement hole and has an elastic member elastically supporting the first engagement hole with the second engagement hole, . The method according to claim 1,
And a first adjustment groove is formed at one end of the fixture to which a rotary member for rotating the fixture is coupled. 6. The method of claim 5,
And a first exposing hole is formed through the center of the first stopper so that the first adjusting groove is exposed to the outside. The method according to claim 1,
Wherein a second adjusting groove, to which a rotating member for rotating the first stopper is coupled, is formed at an outer circumferential surface of the head of the first stopper at regular intervals along the circumferential direction. The method according to claim 1,
And a knurling is formed on an outer peripheral surface of the head of the first stopper. The method according to claim 1,
Wherein the first accommodating portion and the second engaging portion are engaged by the first engaging piece,
The first engaging piece includes a first strip coupled to a first engaging groove formed along the circumferential direction on an outer surface of the first accommodating portion, and a second engaging groove formed on an outer surface of the first strip, And a first hook formed on the inner surface of the second engaging portion and engaged with a second engaging groove formed along the circumferential direction. The method according to claim 1,
And a first locking protrusion is formed in the outer circumferential surface of the first accommodating portion in a longitudinal direction of the first accommodating portion so as to be inserted into the first insertion groove formed in the second engaging portion. The method according to claim 1,
The speed control unit
A second accommodating portion coupled to the third engaging portion and having a viscous fluid accommodated therein,
A shaft portion provided inside the second accommodating portion and having one end coupled to the engaging unit and rotatably provided,
A first pin which is provided between an outer circumferential surface of the shaft portion and an inner circumferential surface of the second accommodating portion and is coupled to a first engaging groove formed on an inner circumferential surface of the second accommodating portion,
And a second pin which is provided between an outer circumferential surface of the shaft portion and an inner circumferential surface of the second accommodating portion and which is coupled with a second engagement groove formed on an outer circumferential surface of the shaft portion and rotates together with the shaft portion, A second pin,
An adjuster inserted into the shaft portion,
And a second stopper coupled to the second containing portion and supporting a rotation of the shaft portion. 12. The method of claim 11,
On the inner peripheral surface of the second accommodating portion
A first receiving groove having a first depth and a first width on one side with respect to the first latching groove and having a predetermined length along the circumferential direction,
And a second receiving groove having a second depth that is deeper than the first depth and a second width that is wider than the first width and that has a predetermined length along the circumferential direction is formed on the other side of the first latching groove with reference to the first latching groove, Closures. 12. The method of claim 11,
The shaft portion
A receiving hole formed in the center at a predetermined length in the axial direction to receive the viscous fluid,
A first through hole formed at one side of the outer circumferential surface of the shaft portion with respect to the second engaging groove and connecting the receiving hole to the outside,
And a second through hole formed at the other side of the outer circumferential surface of the shaft portion with respect to the second latching groove to connect the receiving hole with the outside and formed at a different height from the first through hole. 14. The method of claim 13,
And the control hole is inserted into the receiving hole to adjust the opening area of the second through hole. 15. The method of claim 14,
And a third adjusting groove is formed at one end of the adjuster so as to engage with a rotating member for rotating the adjuster. 12. The method of claim 11,
The second accommodating portion and the third engaging portion are engaged by the second engaging piece,
The second engaging piece includes a second strip coupled to a third engaging groove formed along the circumferential direction on an outer surface of the second accommodating portion and a second engaging groove formed on an outer surface of the second strip along a longitudinal direction of the second strip And a second hook formed in the fourth engaging groove and formed in the circumferential direction on the inner surface of the third engaging portion. 12. The method of claim 11,
And a second locking protrusion is formed in the outer circumferential surface of the second accommodation portion so as to be inserted into the second insertion groove formed in the third engagement portion in the longitudinal direction of the second accommodation portion.

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