Door hinge having adjustable rotation angle in open state

Abstract

The present invention relates to a door hinge. The door hinge may adjust a rotation angle that is a degree of opening in an open state. A door hinge according to an embodiment of the present invention includes: a mounting plate: a body frame; a cover disposed between the mounting plate and the body frame to rotate relative to each of the mounting plate and the body frame; a lever disposed at a lower end of the cover and disposed between the mounting plate and the body frame to rotate relative to each of the mounting plate and the body frame; and an angle adjustment unit configured to control an angle between the mounting plate and the body frame in the open state.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This U.S. non-provisional patent application claims priority under 35 U.S.C. § 119 of Korean Patent Application No. 10-2024-0078123, filed on June 17, 2024 and 10-2024-0092227, filed on July 12, 2024 the entire contents of which are hereby incorporated by reference.BACKGROUND

[0002] The present invention relates to a door hinge. The door hinge may adjust a degree of opening.

[0003] A door hinge is installed on an opening and closing type door. The door hinge has been developed to absorb force acting when opening and closing a door to prevent impacts and noises. To this end, a damper having a function of preventing impacts and noises is mounted to the door hinge. Also, a lever and an arm are disposed between a mounting plate and the damper, each of which is installed on a door, door frame, or wall to allow efficient rotation of the door hinge and to transfer force applied to the door to the damper.

[0004] In case of furniture having a storage space in which a plurality of storage spaces are connected in parallel, when opening a door of one storage space, the door may come into contact with another door disposed at a next storage space to damage the another door or cause inconvenience due to noises and vibrations. Also, when opening a door disposed at a storage space disposed close to a wall, the door may collide with the wall to cause a damage to the wall.

[0005] Typically, in order to solve the above-described limitations, door hinges are classified based on an angle between the mounting plate and the body frame into a door hinge having an angle less than 90° and a door hinge having an angle greater than 90° (generally about 105°). In this case, since different kinds of door hinges are required to be classified and installed depending on positions thereof, operations thereof are difficult, reinstallation is required when a different door hinge is installed, and costs increase according to storage and distribution of various kinds of door hinges.[PRIOR ART DOCUMENTS][PATENT DOCUMENTS]

[0006] (Patent document 001) Korean Patent Registration No. 10-2105870SUMMARY

[0007] The present invention provides a door hinge capable of controlling a rotation angle thereof.

[0008] Also, the present invention may reduce kinds of door hinges to be installed on furniture to reduce costs associated with storage and distribution.

[0009] Also, the present invention may prevent reinstallation caused by an error.

[0010] Also, the present invention may prevent a damage to a door, furniture, and wall.

[0011] An embodiment of the present invention provides a door hinge including: a mounting plate: a body frame; a cover disposed between the mounting plate and the body frame to rotate relative to each of the mounting plate and the body frame; a lever disposed at a lower end of the cover and disposed between the mounting plate and the body frame to rotate relative to each of the mounting plate and the body frame; and an angle adjustment unit configured to control an angle between the mounting plate and the body frame in the open state.

[0012] In an embodiment, the angle adjustment unit may be disposed on the cover and control a distance between the cover and the lever in the open state to control the angle between the mounting plate and the body frame.

[0013] In an embodiment, the angle adjustment unit may be disposed between the cover and the lever or separated therefrom to control the angle between the mounting plate and the body frame.

[0014] In an embodiment, the angle adjustment unit may include an adjustment member and a moving member configured to move the adjustment member to be disposed between the cover and the lever or to be separated therefrom.BRIEF DESCRIPTION OF THE FIGURES

[0015] FIG. 1 is a view illustrating a door hinge according to an embodiment of the present invention. FIG. 2 is a view illustrating a state in which an angle adjustment unit is set to 105°. (a) of FIG. 2 is a top view, and (b) of FIG. 2 is a bottom view. FIG. 3 is a view illustrating a state in which the angle adjustment unit is set to 90°. (a) of FIG. 3 is a top view, and (b) of FIG. 3 is a bottom view. FIG. 4 is a view illustrating the door hinge in an open state at an angle of 105° with the cover illustrated transparently. FIG. 5 is a cross-sectional view illustrating the door hinge in FIG. 4. FIG. 6 is a view illustrating the door hinge in an open state at an angle of 90° with the cover illustrated transparently. FIG. 7 is a cross-sectional view illustrating the door hinge in FIG. 6. DETAILED DESCRIPTION

[0016] Hereinafter, exemplary embodiments of the present invention will be described below in more detail with reference to the accompanying drawings. The present invention may, however, be embodied in different forms and should not be constructed as limited to the embodiments set forth herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the present invention to those skilled in the art. In the drawings, the shapes and dimensions of components are exaggerated for clarity, and like reference numerals denote like elements. Also, portions having similar function and effect may be expressed with the same or similar reference symbol throughout. Furthermore, when it is described that one comprises (or includes or has) some elements, it should be understood that it may comprise (or include or has) only those elements, or it may comprise (or include or have) other elements as well as those elements if there is no specific limitation.

[0017] FIGS. 1 to 7 illustrate a door hinge 100 according to an embodiment of the present invention. Referring to FIGS. 1 to 7, the door hinge 100 includes a mounting plate 110, a body frame 120, a cover 130, a lever 150, and an angle adjustment unit 140. In an embodiment, the door hinge 100 may further include a damper that absorbs an impact, a damper bracket, a torsion spring 160, and another mounting plate fixed to the body frame 120, which is different from the mounting plate 110.

[0018] The mounting plate 110 serves to fix the door hinge 100 to a door or wall to which the door hinge 100 is attached. Referring to FIG. 1, the mounting plate 110 may include a cap having a recessed central portion and screw holes defined at both sides of the cap. The cap may be inserted into a groove defined in a door or wall, and then the door hinge 100 may be fixed to the door or wall by using screws through the screw holes.

[0019] In an embodiment, although not shown in the drawings, the door hinge 100 may further include another mounting plate that fixes the body frame 120 and the damper bracket and fixes the door hinge 100 to the wall or door. The another mounting plate also may include screw holes to fix the door hinge 100 to the wall or door by using screws.

[0020] The cover 130 and body frame 120 are disposed between the mounting plate 110 fixed to one side of furniture and another mounting plate fixed to the other side of the furniture to allow the door hinge 100 to perform a rotational movement.

[0021] The cover 130 may be rotatably connected to the mounting plate 110, and the body frame 120 may be fixedly connected to the another mounting plate. Each of one side of the cover 130 and the mounting plate 110 may perform a rotational movement around a pin inserted into a groove formed in each thereof. The body frame 120 may surround the damper, the damper bracket, and a portion of the lever 150 and be coupled with the another mounting plate. Also, each of the other side of the cover 130 and the mounting plate 110 may perform a rotational movement around a pin inserted into a groove formed in each thereof.

[0022] The lever 150 has one end rotatably connected to the mounting plate 110 and the other end rotatably connected to the body frame 120. Similarly to the cover 130, each of rotatably connected portions of the lever 150 may form a groove, and a pin may be inserted into the groove. The lever 150 may be disposed below the cover 130. The lever 150 moves in a direction away from the cover 130 in a closed state, but moves in a direction close to the cover 130 in an open state.

[0023] The torsion spring 160 applies elasticity when the cover 130 rotates relative to the mounting plate 110. The torsion spring 160 may be arranged on a rotation shaft that connects the lever 150 and body frame 120. Specifically, the torsion spring 160 may surround a rotation shaft of the cover 130 and body frame 120 and have one end that is in contact with the rotation shaft of the cover 130 and mounting plate 110 and the other end that is in contact with the body frame 120. Through this, elasticity may be applied when the lever 150 and cover 130 rotate relative to the mounting plate 110.

[0024] The angle adjustment unit 140 controls an angle between the mounting plate 110 and the body frame 120 in the open state. FIGS. 4 to 7 illustrate the door hinge 100 in the open state. FIGS. 4 and 5 illustrate a case in which the mounting plate 110 is opened at an angle of 105° relative to a z-axis, an FIGS. 6 and 7 illustrate a case in which the mounting plate 110 is opened at an angle of 90° relative to the z-axis. Referring to FIGS. 4 to 7, the angle adjustment unit 140 may control the angle between the mounting plate 110 and body frame 120 by controlling a distance between the cover 130 and lever 150.

[0025] In an embodiment, the angle adjustment unit 140 may include a moving member 141 and an adjustment member 142.

[0026] The moving member 141 moves a position of the adjustment member 142. As a user rotates or moves the moving member 141, the moving member 141 may rotate or move the adjustment member 142. Since the moving member 141 may pass through the cover 130, the cover 130 may include a through-hole. The moving member 141 may include a groove having a shape of '-' or '+' or have an outer shape of a polygon such as a hexagon so that the user easily rotates the moving member 141 from the outside.

[0027] The adjustment member 142 may have a shape of a beam or plate that has a constant thickness and be disposed in or separated from a space between the cover 130 and lever 150 as the moving member 141 is moved. When the adjustment member 142 is disposed in the space between the cover 130 and lever 150, a rotation angle of each of the cover 130 and lever 150 is reduced because a moving distance of the lever 150 in a direction toward the cover 130 is reduced. Thus, the angle between the mounting plate 110 and body frame 120 is also reduced. Referring to FIGS. 2 and 3, a through-hole 141h may be defined at the other end of the adjustment member 142. Referring to FIG. 7, one end of the lever 150 may be disposed in the through-hole 141h. In this case, since one end of the lever 150 is disposed to be caught by the through-hole 141h of the adjustment member 142, the adjustment member 142 may be prevented from being deviated from a regular position thereof.

[0028] Referring to FIGS. 2 and 3, an operator may easily adjust a position of the moving member 141 because the moving member 141 is disposed on the cover 130 and exposed to the outside, and the adjustment member 142 may not interfere with another component because the adjustment member 142 is disposed below the cover 130 and is not exposed to the outside.

[0029] FIG. 2 illustrates a case in which each of the moving member 141 and the adjustment member 142 is set to 105°. Here, the 105° represents an angle between the mounting plate 110 and the z-axis. In (b) of FIG. 2, the moving member 141 is set to 105°, and the adjustment member 142 is disposed outside a space in which the cover 130 and lever 150 tightly contact each other in the open state (more specifically, a space between an end of the cover 130, which is arranged toward the mounting plate 110, and an end of the lever 150, which is arranged toward the mounting plate 110). Based on an axial direction illustrated in the drawing, the adjustment member 142 may be disposed so that the other end thereof faces a y-axis direction based on a shaft rotated by the moving member 141. In this case, as illustrated in FIG. 5, since the adjustment member 142 is not disposed in the space in which the cover 130 and lever 150 tightly contact each other, the space is empty. Thus, the cover 130 and lever 150 may tightly contact each other, and the mounting plate 110 may be opened to an angle of 105° with respect to the z-axis.

[0030] FIG. 3 illustrates a case in which each of the moving member 141 and adjustment member 142 is set to 90°. Here, the 90° represents an angle between the mounting plate 110 and the z-axis. In (b) of FIG. 3, the moving member 141 is set to 90°, and the adjustment member 142 is disposed in the space in which the cover 130 and lever 150 tightly contact each other in the open state (more specifically, a space between an end of the cover 130, which is arranged toward the mounting plate 110, and an end of the lever 150, which is arranged toward the mounting plate 110). Based on an axial direction illustrated in the drawing, the adjustment member 142 may be disposed so that the other end thereof faces a direction opposite to an x-axis based on a shaft rotated by the moving member 141. In this case, as illustrated in FIG. 7, since the adjustment member 142 is disposed in the space in which the cover 130 and lever 150 tightly contact each other, the cover 130 and the lever 150 are spaced by a distance as many as a thickness of the adjustment member 142 from each other although the cover 130 and the lever 150 tightly contact each other. Thus, the mounting plate 110 may be opened until an angle of 90° with respect to the z-axis instead of being opened to the angle of 105°.

[0031] One end of the adjustment member 142 is fixed to the moving member 141. Through this, the other end of the adjustment member 142 may be moved (rotated) by a movement (rotation) of the moving member 141, and a position thereof may be changed. In an embodiment, the adjustment member 142 may include another through-hole, and the moving member 141 may be fixedly inserted to the through-hole. The thickness of the adjustment member 142 may be adjusted according to a required angle, preferably in a range from 1 mm to 3 mm.

[0032] The damper and damper bracket serve to reduce an impact and a noise generated when a door is opened and closed. The damper may include an operating shaft connected to the lever 150 to reciprocate according to a rotation of the lever 150, a piston connected to the operating shaft, a cylinder in which the piston is inserted, and an inner chamber formed by the piston and cylinder. The operating shaft is connected to one end of an arm connected to the lever 150. A direction of force generated as the mounting plate 110 is rotated may be changed linearly through the lever 150 and the arm, and the operating shaft may reciprocate into and out of the cylinder by the force.

[0033] The damper bracket may be detachably coupled to the body frame 120. For example, since the damper bracket is smaller than the body frame 120, the damper bracket may be disposed in the body frame 120. Also, the damper bracket may have a shape of surrounding the damper.

[0034] The door hinge according to the embodiment of the present invention may control the rotation angle thereof.

[0035] Also, the present invention may reduce the kinds of the door hinges to be installed on furniture to reduce the costs associated with the storage and distribution.

[0036] Also, the present invention may prevent reinstallation caused by the error.

[0037] Also, the present invention may prevent the damage to the door, the furniture, and the wall.

[0038] Although the exemplary embodiments of the present invention have been described, it is understood that the present invention should not be limited to these exemplary embodiments but various changes and modifications can be made by one ordinary skilled in the art within the spirit and scope of the present invention as hereinafter claimed. Hence, the real protective scope of the present invention shall be determined by the technical scope of the accompanying claims.[Description of the reference numerals]

[0039] 100: Door hinge 110: Mounting plate 120: Body frame 130: Cover 140: Angle adjustment unit 141: Moving member 141h: Through-hole 142: Adjustment member 150: Lever 160: Torsion spring

Examples

Embodiment Construction

[0016]Hereinafter, exemplary embodiments of the present invention will be described below in more detail with reference to the accompanying drawings. The present invention may, however, be embodied in different forms and should not be constructed as limited to the embodiments set forth herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the present invention to those skilled in the art. In the drawings, the shapes and dimensions of components are exaggerated for clarity, and like reference numerals denote like elements. Also, portions having similar function and effect may be expressed with the same or similar reference symbol throughout. Furthermore, when it is described that one comprises (or includes or has) some elements, it should be understood that it may comprise (or include or has) only those elements, or it may comprise (or include or have) other elements as well as those elements if there is no ...

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This U.S. non-provisional patent application claims priority under 35 U.S.C. § 119 of Korean Patent Application No. 10-2024-0078123, filed on June 17, 2024 and 10-2024-0092227, filed on July 12, 2024 the entire contents of which are hereby incorporated by reference.BACKGROUND

[0002] The present invention relates to a door hinge. The door hinge may adjust a degree of opening.

[0003] A door hinge is installed on an opening and closing type door. The door hinge has been developed to absorb force acting when opening and closing a door to prevent impacts and noises. To this end, a damper having a function of preventing impacts and noises is mounted to the door hinge. Also, a lever and an arm are disposed between a mounting plate and the damper, each of which is installed on a door, door frame, or wall to allow efficient rotation of the door hinge and to transfer force applied to the door to the damper.

[0004] In case of furniture having a storage space in which a plurality of storage spaces are connected in parallel, when opening a door of one storage space, the door may come into contact with another door disposed at a next storage space to damage the another door or cause inconvenience due to noises and vibrations. Also, when opening a door disposed at a storage space disposed close to a wall, the door may collide with the wall to cause a damage to the wall.

[0005] Typically, in order to solve the above-described limitations, door hinges are classified based on an angle between the mounting plate and the body frame into a door hinge having an angle less than 90° and a door hinge having an angle greater than 90° (generally about 105°). In this case, since different kinds of door hinges are required to be classified and installed depending on positions thereof, operations thereof are difficult, reinstallation is required when a different door hinge is installed, and costs increase according to storage and distribution of various kinds of door hinges.[PRIOR ART DOCUMENTS][PATENT DOCUMENTS]

[0006] (Patent document 001) Korean Patent Registration No. 10-2105870SUMMARY

[0007] The present invention provides a door hinge capable of controlling a rotation angle thereof.

[0008] Also, the present invention may reduce kinds of door hinges to be installed on furniture to reduce costs associated with storage and distribution.

[0009] Also, the present invention may prevent reinstallation caused by an error.

[0010] Also, the present invention may prevent a damage to a door, furniture, and wall.

[0011] An embodiment of the present invention provides a door hinge including: a mounting plate: a body frame; a cover disposed between the mounting plate and the body frame to rotate relative to each of the mounting plate and the body frame; a lever disposed at a lower end of the cover and disposed between the mounting plate and the body frame to rotate relative to each of the mounting plate and the body frame; and an angle adjustment unit configured to control an angle between the mounting plate and the body frame in the open state.

[0012] In an embodiment, the angle adjustment unit may be disposed on the cover and control a distance between the cover and the lever in the open state to control the angle between the mounting plate and the body frame.

[0013] In an embodiment, the angle adjustment unit may be disposed between the cover and the lever or separated therefrom to control the angle between the mounting plate and the body frame.

[0014] In an embodiment, the angle adjustment unit may include an adjustment member and a moving member configured to move the adjustment member to be disposed between the cover and the lever or to be separated therefrom.BRIEF DESCRIPTION OF THE FIGURES

[0015] FIG. 1 is a view illustrating a door hinge according to an embodiment of the present invention. FIG. 2 is a view illustrating a state in which an angle adjustment unit is set to 105°. (a) of FIG. 2 is a top view, and (b) of FIG. 2 is a bottom view. FIG. 3 is a view illustrating a state in which the angle adjustment unit is set to 90°. (a) of FIG. 3 is a top view, and (b) of FIG. 3 is a bottom view. FIG. 4 is a view illustrating the door hinge in an open state at an angle of 105° with the cover illustrated transparently. FIG. 5 is a cross-sectional view illustrating the door hinge in FIG. 4. FIG. 6 is a view illustrating the door hinge in an open state at an angle of 90° with the cover illustrated transparently. FIG. 7 is a cross-sectional view illustrating the door hinge in FIG. 6. DETAILED DESCRIPTION

[0016] Hereinafter, exemplary embodiments of the present invention will be described below in more detail with reference to the accompanying drawings. The present invention may, however, be embodied in different forms and should not be constructed as limited to the embodiments set forth herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the present invention to those skilled in the art. In the drawings, the shapes and dimensions of components are exaggerated for clarity, and like reference numerals denote like elements. Also, portions having similar function and effect may be expressed with the same or similar reference symbol throughout. Furthermore, when it is described that one comprises (or includes or has) some elements, it should be understood that it may comprise (or include or has) only those elements, or it may comprise (or include or have) other elements as well as those elements if there is no specific limitation.

[0017] FIGS. 1 to 7 illustrate a door hinge 100 according to an embodiment of the present invention. Referring to FIGS. 1 to 7, the door hinge 100 includes a mounting plate 110, a body frame 120, a cover 130, a lever 150, and an angle adjustment unit 140. In an embodiment, the door hinge 100 may further include a damper that absorbs an impact, a damper bracket, a torsion spring 160, and another mounting plate fixed to the body frame 120, which is different from the mounting plate 110.

[0018] The mounting plate 110 serves to fix the door hinge 100 to a door or wall to which the door hinge 100 is attached. Referring to FIG. 1, the mounting plate 110 may include a cap having a recessed central portion and screw holes defined at both sides of the cap. The cap may be inserted into a groove defined in a door or wall, and then the door hinge 100 may be fixed to the door or wall by using screws through the screw holes.

[0019] In an embodiment, although not shown in the drawings, the door hinge 100 may further include another mounting plate that fixes the body frame 120 and the damper bracket and fixes the door hinge 100 to the wall or door. The another mounting plate also may include screw holes to fix the door hinge 100 to the wall or door by using screws.

[0020] The cover 130 and body frame 120 are disposed between the mounting plate 110 fixed to one side of furniture and another mounting plate fixed to the other side of the furniture to allow the door hinge 100 to perform a rotational movement.

[0021] The cover 130 may be rotatably connected to the mounting plate 110, and the body frame 120 may be fixedly connected to the another mounting plate. Each of one side of the cover 130 and the mounting plate 110 may perform a rotational movement around a pin inserted into a groove formed in each thereof. The body frame 120 may surround the damper, the damper bracket, and a portion of the lever 150 and be coupled with the another mounting plate. Also, each of the other side of the cover 130 and the mounting plate 110 may perform a rotational movement around a pin inserted into a groove formed in each thereof.

[0022] The lever 150 has one end rotatably connected to the mounting plate 110 and the other end rotatably connected to the body frame 120. Similarly to the cover 130, each of rotatably connected portions of the lever 150 may form a groove, and a pin may be inserted into the groove. The lever 150 may be disposed below the cover 130. The lever 150 moves in a direction away from the cover 130 in a closed state, but moves in a direction close to the cover 130 in an open state.

[0023] The torsion spring 160 applies elasticity when the cover 130 rotates relative to the mounting plate 110. The torsion spring 160 may be arranged on a rotation shaft that connects the lever 150 and body frame 120. Specifically, the torsion spring 160 may surround a rotation shaft of the cover 130 and body frame 120 and have one end that is in contact with the rotation shaft of the cover 130 and mounting plate 110 and the other end that is in contact with the body frame 120. Through this, elasticity may be applied when the lever 150 and cover 130 rotate relative to the mounting plate 110.

[0024] The angle adjustment unit 140 controls an angle between the mounting plate 110 and the body frame 120 in the open state. FIGS. 4 to 7 illustrate the door hinge 100 in the open state. FIGS. 4 and 5 illustrate a case in which the mounting plate 110 is opened at an angle of 105° relative to a z-axis, an FIGS. 6 and 7 illustrate a case in which the mounting plate 110 is opened at an angle of 90° relative to the z-axis. Referring to FIGS. 4 to 7, the angle adjustment unit 140 may control the angle between the mounting plate 110 and body frame 120 by controlling a distance between the cover 130 and lever 150.

[0025] In an embodiment, the angle adjustment unit 140 may include a moving member 141 and an adjustment member 142.

[0026] The moving member 141 moves a position of the adjustment member 142. As a user rotates or moves the moving member 141, the moving member 141 may rotate or move the adjustment member 142. Since the moving member 141 may pass through the cover 130, the cover 130 may include a through-hole. The moving member 141 may include a groove having a shape of '-' or '+' or have an outer shape of a polygon such as a hexagon so that the user easily rotates the moving member 141 from the outside.

[0027] The adjustment member 142 may have a shape of a beam or plate that has a constant thickness and be disposed in or separated from a space between the cover 130 and lever 150 as the moving member 141 is moved. When the adjustment member 142 is disposed in the space between the cover 130 and lever 150, a rotation angle of each of the cover 130 and lever 150 is reduced because a moving distance of the lever 150 in a direction toward the cover 130 is reduced. Thus, the angle between the mounting plate 110 and body frame 120 is also reduced. Referring to FIGS. 2 and 3, a through-hole 141h may be defined at the other end of the adjustment member 142. Referring to FIG. 7, one end of the lever 150 may be disposed in the through-hole 141h. In this case, since one end of the lever 150 is disposed to be caught by the through-hole 141h of the adjustment member 142, the adjustment member 142 may be prevented from being deviated from a regular position thereof.

[0028] Referring to FIGS. 2 and 3, an operator may easily adjust a position of the moving member 141 because the moving member 141 is disposed on the cover 130 and exposed to the outside, and the adjustment member 142 may not interfere with another component because the adjustment member 142 is disposed below the cover 130 and is not exposed to the outside.

[0029] FIG. 2 illustrates a case in which each of the moving member 141 and the adjustment member 142 is set to 105°. Here, the 105° represents an angle between the mounting plate 110 and the z-axis. In (b) of FIG. 2, the moving member 141 is set to 105°, and the adjustment member 142 is disposed outside a space in which the cover 130 and lever 150 tightly contact each other in the open state (more specifically, a space between an end of the cover 130, which is arranged toward the mounting plate 110, and an end of the lever 150, which is arranged toward the mounting plate 110). Based on an axial direction illustrated in the drawing, the adjustment member 142 may be disposed so that the other end thereof faces a y-axis direction based on a shaft rotated by the moving member 141. In this case, as illustrated in FIG. 5, since the adjustment member 142 is not disposed in the space in which the cover 130 and lever 150 tightly contact each other, the space is empty. Thus, the cover 130 and lever 150 may tightly contact each other, and the mounting plate 110 may be opened to an angle of 105° with respect to the z-axis.

[0030] FIG. 3 illustrates a case in which each of the moving member 141 and adjustment member 142 is set to 90°. Here, the 90° represents an angle between the mounting plate 110 and the z-axis. In (b) of FIG. 3, the moving member 141 is set to 90°, and the adjustment member 142 is disposed in the space in which the cover 130 and lever 150 tightly contact each other in the open state (more specifically, a space between an end of the cover 130, which is arranged toward the mounting plate 110, and an end of the lever 150, which is arranged toward the mounting plate 110). Based on an axial direction illustrated in the drawing, the adjustment member 142 may be disposed so that the other end thereof faces a direction opposite to an x-axis based on a shaft rotated by the moving member 141. In this case, as illustrated in FIG. 7, since the adjustment member 142 is disposed in the space in which the cover 130 and lever 150 tightly contact each other, the cover 130 and the lever 150 are spaced by a distance as many as a thickness of the adjustment member 142 from each other although the cover 130 and the lever 150 tightly contact each other. Thus, the mounting plate 110 may be opened until an angle of 90° with respect to the z-axis instead of being opened to the angle of 105°.

[0031] One end of the adjustment member 142 is fixed to the moving member 141. Through this, the other end of the adjustment member 142 may be moved (rotated) by a movement (rotation) of the moving member 141, and a position thereof may be changed. In an embodiment, the adjustment member 142 may include another through-hole, and the moving member 141 may be fixedly inserted to the through-hole. The thickness of the adjustment member 142 may be adjusted according to a required angle, preferably in a range from 1 mm to 3 mm.

[0032] The damper and damper bracket serve to reduce an impact and a noise generated when a door is opened and closed. The damper may include an operating shaft connected to the lever 150 to reciprocate according to a rotation of the lever 150, a piston connected to the operating shaft, a cylinder in which the piston is inserted, and an inner chamber formed by the piston and cylinder. The operating shaft is connected to one end of an arm connected to the lever 150. A direction of force generated as the mounting plate 110 is rotated may be changed linearly through the lever 150 and the arm, and the operating shaft may reciprocate into and out of the cylinder by the force.

[0033] The damper bracket may be detachably coupled to the body frame 120. For example, since the damper bracket is smaller than the body frame 120, the damper bracket may be disposed in the body frame 120. Also, the damper bracket may have a shape of surrounding the damper.

[0034] The door hinge according to the embodiment of the present invention may control the rotation angle thereof.

[0035] Also, the present invention may reduce the kinds of the door hinges to be installed on furniture to reduce the costs associated with the storage and distribution.

[0036] Also, the present invention may prevent reinstallation caused by the error.

[0037] Also, the present invention may prevent the damage to the door, the furniture, and the wall.

[0038] Although the exemplary embodiments of the present invention have been described, it is understood that the present invention should not be limited to these exemplary embodiments but various changes and modifications can be made by one ordinary skilled in the art within the spirit and scope of the present invention as hereinafter claimed. Hence, the real protective scope of the present invention shall be determined by the technical scope of the accompanying claims.[Description of the reference numerals]

[0039] 100: Door hinge 110: Mounting plate 120: Body frame 130: Cover 140: Angle adjustment unit 141: Moving member 141h: Through-hole 142: Adjustment member 150: Lever 160: Torsion spring

Examples

Embodiment Construction

[0016]Hereinafter, exemplary embodiments of the present invention will be described below in more detail with reference to the accompanying drawings. The present invention may, however, be embodied in different forms and should not be constructed as limited to the embodiments set forth herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the present invention to those skilled in the art. In the drawings, the shapes and dimensions of components are exaggerated for clarity, and like reference numerals denote like elements. Also, portions having similar function and effect may be expressed with the same or similar reference symbol throughout. Furthermore, when it is described that one comprises (or includes or has) some elements, it should be understood that it may comprise (or include or has) only those elements, or it may comprise (or include or have) other elements as well as those elements if there is no ...

Claims

1. A door hinge comprising: a mounting plate: a body frame; a cover disposed between the mounting plate and the body frame to rotate relative to each of the mounting plate and the body frame; a lever disposed at a lower end of the cover and disposed between the mounting plate and the body frame to rotate relative to each of the mounting plate and the body frame; and an angle adjustment unit configured to control an angle between the mounting plate and the body frame in an open state.

2. The door hinge of claim 1, wherein the angle adjustment unit is disposed on the cover and controls a distance between the cover and the lever in the open state to control the angle between the mounting plate and the body frame.

3. The door hinge of claim 1, wherein the angle adjustment unit is disposed between the cover and the lever or separated therefrom to control the angle between the mounting plate and the body frame.

4. The door hinge of claim 1, wherein the angle adjustment unit comprises an adjustment member and a moving member configured to move the adjustment member to be disposed between the cover and the lever or to be separated therefrom..

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