Automatic door hinge device

Abstract

The door automatic reset hinge device of the present application can include: a cover fixed to a body; a connecting rod rotatably disposed at a lower surface of the cover and connected to a door; a torsion spring disposed inside the cover to generate an elastic force; and a clutch unit disposed inside the cover and disposed between the torsion spring and the connecting rod, which, if the door rotates by a predetermined angle, transmits the elastic force of the torsion spring to the door to automatically close the door, and, if the door reaches a predetermined open position, stops the door, so that the open state of the door can be maintained by the stop action of the hinge device.

Description

Technical Field

[0001] The present invention relates to a door hinge device that rotatably supports a door by being installed on a door, and more specifically, to a door automatic reset hinge device that enables the door to be automatically opened or closed and maintains the door in a stopped state when the door reaches a preset position. Background Technology

[0002] Currently, door hinge devices are components that rotatably support the door by being installed between the door and the door frame, allowing the door to rotate open and close. The hinge device is equipped with an automatic return spring device that allows the door to open or close automatically.

[0003] As disclosed in Korean Patent Publication No. 10-0874633 (December 11, 2008), existing automatic reset hinge devices have a torsion spring installed inside the housing. The shaft is connected to the door, and the door is automatically opened or closed by the elastic force of the torsion spring. A clutch device is installed inside the housing to perform the function of transmitting the elastic force of the torsion spring to the shaft or blocking the transmission. If the door reaches a specified range, the elastic force is applied to the door.

[0004] As mentioned above, although the existing automatic reset hinge device has the function of providing elastic force to the door when it is opened or closed by the elastic force of the torsion spring, it does not have the function of stopping the door when it reaches the preset position. Therefore, the door is in a free state when it is open, which may cause the door to close unexpectedly due to factors such as wind. Summary of the Invention

[0005] Technical issues

[0006] Therefore, one object of the present invention is to provide an automatic door reset hinge device that performs the function of automatically opening or closing the door by providing a spring force to the door when opening or closing the door, and keeps the door in a stopped state by stopping the door when it reaches a preset position, thereby solving the problem of the door closing arbitrarily.

[0007] Another object of the present invention is to provide an automatic door reset hinge device, wherein the door is maintained in the open state without a separate door stop device by setting a stop interval for the door hinge device that automatically closes when the door is opened or closed, thereby maintaining the door in the open state.

[0008] Technical solution

[0009] To achieve the aforementioned objective, the automatic door reset hinge device of the present invention includes: an outer cover fixed to the body; a connecting rod rotatably disposed on the lower surface of the outer cover and connected to the door; a torsion spring disposed inside the outer cover for generating elastic force; and a clutch unit disposed inside the outer cover and disposed between the torsion spring and the connecting rod, wherein if the door rotates by a preset angle, the elastic force of the torsion spring is transmitted to the door to automatically close the door; and if the door reaches a preset open position, the door is stopped.

[0010] The clutch unit may include: an external component fixed to the inner surface of the outer cover, with a recessed first groove formed on its inner surface; an internal component inserted into the inner surface of the external component, with a slot formed thereon, connected to the lower end of a torsion spring; a shaft inserted into the internal component, with a second groove formed thereon, connected to a connecting rod; and two roller balls selectively inserted into the first and second grooves, transmitting the spring force of the torsion spring to the shaft only within a preset angle range, with a stop groove formed at the edge of the second groove so that the door is in a stopped state when the roller balls are inserted.

[0011] The size of the stop groove is relatively smaller than the size of the second groove. If the roller ball is inserted into the stop groove, the shaft is locked by the roller ball, so that the door remains stopped.

[0012] If the roller ball is inserted into the second groove of the shaft, the spring force of the torsion spring acts on the shaft, thereby forming an automatic closing section. If the roller ball is inserted into the stop groove of the shaft, a stopping section is formed. If the roller ball disengages from the second groove and the stop groove of the shaft, a free section in which the spring force does not act on the door is formed.

[0013] An inclined facet with an inner diameter that gradually decreases as it moves away from the first groove portion can be formed on both sides of the first groove portion of the external component.

[0014] The effects of the invention

[0015] As described above, the automatic door reset hinge device of the present invention performs the function of automatically opening or closing the door by providing spring force to the door when opening or closing the door, and keeps the door in a stopped state by stopping the door when it reaches a preset position, thereby solving the problem of the door closing arbitrarily.

[0016] Furthermore, by setting a stop range that can maintain the door's open state in the door hinge device that automatically closes when the door is opened or closed, the door can be kept open even without a separate door stop device. Attached Figure Description

[0017] Figure 1 This is a perspective view of an automatic door reset hinge device according to an embodiment of the present invention.

[0018] Figure 2 This is a partially exploded perspective view of an automatic door reset hinge device according to an embodiment of the present invention.

[0019] Figure 3 This is a cross-sectional view showing the position of the roller ball in the free zone when the door of an automatic door reset hinge device according to an embodiment of the present invention is in the free zone.

[0020] Figure 4 This is a cross-sectional view showing the position of the roller ball in the automatic closing section of the door automatic reset hinge device according to an embodiment of the present invention.

[0021] Figure 5 This is a cross-sectional view showing the position of the roller ball in the stop zone of an automatic door reset hinge device according to an embodiment of the present invention.

[0022] Figure 6 This is a cross-sectional view showing the position of the roller ball in the closed state of the automatic door reset hinge device according to an embodiment of the present invention. Detailed Implementation

[0023] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. During this process, for clarity and convenience, the size or shape of the structural elements shown in the drawings may be exaggerated. Furthermore, considering the structure and function of the present invention, many terms specifically defined may differ depending on the intent or convention of the user or application personnel. The definitions of these terms should be determined based on the entire text of this specification.

[0024] Figure 1 This is an exploded perspective view of an automatic door reset hinge device according to an embodiment of the present invention. Figure 2 This is a cross-sectional view of an automatic door reset hinge device according to an embodiment of the present invention.

[0025] An embodiment of the present invention provides an automatic door reset hinge device that automatically opens or closes the door by providing a spring force to the door when it is opened or closed, and keeps the door in a stopped state when it reaches a preset position.

[0026] like Figure 1 and Figure 2 As shown, the automatic door reset hinge device includes: an outer cover 10 fixed to the main body; a connecting rod rotatably disposed on the lower surface of the outer cover 10 and connected to the door; a torsion spring 14 disposed inside the outer cover 10 for generating elastic force; an elastic force adjustment unit 16 installed on the upper part of the outer cover 10 for adjusting the elastic force of the torsion spring 14; and a clutch unit 16 disposed between the torsion spring 14 and the connecting rod 12. If the door rotates to a preset angle, the clutch unit 16 transmits the elastic force of the torsion spring 14 to the door to make the door automatically open or close. If the door reaches the preset angle, the clutch unit 16 stops the door so that the door remains in a stopped state.

[0027] The outer surface of the outer cover 10 is a right hexahedron, its inner surface is cylindrical, its upper and lower surfaces are open, and a fixing flange 18 for fixing the outer cover 10 to the main body is formed on its outer surface.

[0028] The elastic adjustment part 16 includes: an upper cap 20, fixed to the upper surface of the outer cover 10, with a semi-circular first slot 22 formed on its inner surface at predetermined intervals along the circumferential direction; a first spring pad 26, inserted into the inner surface of the upper cap 20, supporting and locking the upper end of the torsion spring 14 on its lower surface; an adjustment member 24, with a second slot 32, the same semi-circular shape as the first slot 22, formed on its outer surface at predetermined intervals, and a tool insertion groove 28 formed at the center of its upper surface; and a fixing bolt 30, which fixes the position of the adjustment member 24 such that the first slot 22 and the second slot 32 are aligned.

[0029] The elasticity adjustment part 16 configured in this way is used to adjust the elasticity of the torsion spring 14. If a tool is inserted into the adjustment part 24 and the adjustment part 24 is rotated freely while the fixing bolt 30 is loosened, the elasticity of the torsion spring 14 can be adjusted. If the fixing bolt 30 is inserted into a position that aligns the first slot part 22 and the second slot part 32, the adjustment part 24 will be fixed in the current position, thereby adjusting the elasticity of the torsion spring 14.

[0030] The clutch unit 16 includes: an external component 40 fixed to the inner surface of the outer cover 10, with two recessed first grooves 42 formed on its inner surface at 180-degree intervals along the vertical direction; an internal component 44 inserted into the inner surface of the external component 40, with two slots 50 formed at 180-degree intervals, connected to the lower end of the torsion spring 14; a shaft 52 inserted into the internal component 44, with two second grooves 54 formed at 180-degree intervals, connected to the connecting rod 12; and two roller balls 60 selectively inserted into the first grooves 42 and the second grooves 54, transmitting the elastic force of the torsion spring 14 to the shaft 52 only within a preset angle range.

[0031] The outer component 40 is cylindrical and fixed to the inner surface of the outer cover 10. A locking shoulder 62 with a gradually decreasing inner diameter is formed at the bottom to prevent the shaft 52 from detaching in the downward direction.

[0032] If the roller ball 60 is inserted into the first groove 42 of the outer component 40, the roller ball 60 is disengaged from the second groove 54 of the shaft 52, and the shaft 52 is also in a free state, thus forming a region where the elastic force will not be effective.

[0033] The internal component 44 includes: a clutch portion 48, which is inserted into the inner surface of the external component 40 and has two slot portions 50; and a second spring pad portion 46, which is formed on the upper surface of the clutch portion 48 and has a through hole portion 68 in the center to support the lower end of the locking torsion spring 14.

[0034] The shaft 52 includes: a first shaft portion 56, which has two recessed second groove portions 54 formed on its upper outer surface to insert the roller ball 60, which is inserted into the inner surface of the inner component 44; and a second shaft portion 58, which extends toward the lower side of the first shaft portion 56 and is inserted into the connecting rod 12 to rotate together with the connecting rod 12.

[0035] The second shaft portion 58 is inserted and fixed to the cylindrical connecting member 70, and the connecting rod 12 is fixed to the lower outer surface of the connecting member 70. The connecting member 70 is rotatably mounted on the lower inner surface of the outer cover 10, and the connecting member 70 is rotatably supported by a bushing 72 provided on the outer surface of the connecting member 70.

[0036] The support rod 74 is inserted into the internal component 44 in a linearly movable manner. A support spring 76 is installed between the support rod 74 and the adjusting component 24 to provide elastic force to the support rod 74. The lower end of the support rod 74 contacts the upper surface of the shaft 52, so that the support rod 74 provides a downward elastic force to the shaft 52 through the elastic force of the support spring 76.

[0037] That is, the elastic force of the support spring 76 acts on the shaft 52, and the shaft 52 can maintain its current position by the elastic force acting in the downward direction.

[0038] like Figure 3 As shown, the clutch unit 16 configured in this way forms a state where the roller ball 60 is inserted into the first groove 42 of the outer component 40 and the slot 50 of the inner component 44. If the roller ball 60 is disengaged from the second groove 54 of the shaft 52, a free region is formed where the elastic force of the torsion spring 14, which allows the shaft 52 to rotate freely, is not activated. This free region is approximately reached when the door is opened to a preset angle or higher, allowing the door to rotate freely.

[0039] Moreover, such as Figure 4 As shown, if the roller ball 60 disengages from the first groove 40 of the outer component 40 and is inserted into the slot 50 of the inner component 44 and the second groove 54 of the shaft 52, then the inner component 44 and the shaft 52 are connected to each other through the roller ball 60. The elastic force of the torsion spring 14 will act on the shaft 52 to make the shaft 52 rotate automatically. The rotational force of the shaft 52 will be transmitted to the connecting rod 12 to make the door rotate automatically and form an automatic closing section that realizes the automatic closing of the door.

[0040] The clutch unit 16 configured in this way can make the door free when the opening angle of the door reaches a preset angle or more, forming a free range in which the elastic force does not exert any force. If the door reaches the preset angle, the elastic force will be applied to the door from that point onwards to form an automatic closing range in which the door closes automatically.

[0041] This type of automatic closing hinge device has a problem where the door rotates freely and closes arbitrarily when it leaves the automatic closing zone and enters the free zone. In other words, if the door is open and rotates in the closing direction due to wind or other factors, reaching the automatic closing zone, it will automatically close, causing inconvenience to the user.

[0042] To solve this problem, in this embodiment, the clutch unit 16 forms a stop zone when the door moves from the automatic closing zone to the free zone, so as to maintain the door in a stopped state. Only by pushing the door with a specified force can the door be moved out of the stop zone. The door can be kept in a stopped state while it is open, thus solving the problem of the door closing randomly due to wind or other factors.

[0043] like Figure 5 As shown, in order to form a stopping section, a stopping groove 80 is formed at the edge of the second recess 54 of the shaft 52 so that the door remains stopped when the roller ball 60 is inserted. The size of the stopping groove 80 is relatively smaller than the size of the second recess 54. If the roller ball 60 is inserted into the door stopping groove 80, the shaft 52 is locked by the roller ball 60, thereby keeping the door stopped.

[0044] Furthermore, inclined surfaces 82 with gradually decreasing inner diameters are formed on both sides of the first recess 42 of the outer component 40. If the roller ball 60 disengages from the first recess 42 and is located on the inclined surface 82, it enters the automatic closing zone and causes the roller ball 60 to roll along the inclined surface 82, thereby automatically closing the door. Moreover, as... Figure 6 As shown, if the roller ball 60 reaches the end of the inclined surface 82, the door is fully closed, so that the roller ball 60 is stuck at the end of the inclined surface 82 to form a door stop range where the elastic force no longer acts on the shaft 52.

[0045] Moreover, such as Figure 5As shown, the diameter L1 of the roller ball 60 is greater than the distance L2 from the second groove 54 of the shaft 52 to the inner surface of the outer component 40. The roller ball 60 does not roll on the inner surface of the outer component 40, but only until the end of the inclined surface 82. Once it reaches the end of the inclined surface 82, the roller ball 60 stops moving and comes to a stop. At this time, the elastic force of the torsion spring 14 is not transmitted to the stop state of the shaft 52. Therefore, when the door is fully closed, the roller ball 60 is located at the end of the inclined surface 82, so the elastic force will not act on the door when the door is closed.

[0046] That is, when one side of the roller ball 60 is fully inserted into the second groove 54 of the shaft 52, the other side of the roller ball 60 causes the end portion of the inclined surface 82 to be locked, so that the roller ball 60 disengages from the inclined surface 82 and will no longer move to the inner surface of the outer component 40, but stops at its position, thereby forming a stopped state in which the elastic force of the torsion spring 14 does not act on the shaft 52.

[0047] As described above, the diameter that allows the roller ball 60 to roll toward the inclined surface 82 can be formed by forming inclined surfaces 82 on both sides of the first groove 42 of the outer component 40. If the door is closed by the clutch device itself without a separate stopping structure, the elastic force no longer acts on the door.

[0048] The function of the automatic reset hinge device of this invention according to an embodiment of the present invention will be explained below.

[0049] First, when the door is closed, such as Figure 6 As shown, the roller ball 60 will be located at the end of the inclined surface 82 and in the state of being inserted into the second groove 54 of the shaft 52, thereby forming an area where the elastic force will not act on the door.

[0050] If the door is opened in this state, then as follows: Figure 5 As shown, the roller ball 60 rolls along the inclined surface 82 to open the door. In this case, the elastic force acts on the door in the closing direction, causing the door to close automatically when closed.

[0051] Furthermore, if the door is further opened and opened to a preset angle, the roller ball 60 will be inserted into the door stop groove 80 formed at the edge of the second groove 54, and the shaft 52 will be locked by the roller ball 60, thereby forming a door stop interval that maintains the door's stopped state.

[0052] As mentioned above, if the door reaches the door stop zone while it is open, the door will remain stopped to prevent the door from closing arbitrarily due to external factors such as wind.

[0053] Furthermore, if the door is pushed again with a prescribed force in the direction of opening, the roller ball 60 disengages from the door stop groove 80 and is located on the outer surface of the shaft 52, thereby forming a free range that allows the shaft 52 to rotate freely, without the spring force of the torsion spring 14 taking effect.

[0054] Furthermore, if the door is pushed in the closing direction to move out of the stopping area while closing, then... Figure 4 As shown, the elastic force acts on the door to make it close automatically.

[0055] The present invention has been illustrated and described above with reference to specific preferred embodiments, but the present invention is not limited to the embodiments described. Various changes and modifications can be made by those skilled in the art without departing from the spirit of the present invention.

[0056] Industrial availability

[0057] This invention can be effectively applied to various door opening and closing devices.

Claims

1. A door automatic reset hinge device, characterized in that, include: The outer cover is fixed to the main body; A connecting rod is rotatably mounted on the lower surface of the outer casing and connected to the door; A torsion spring, disposed inside the outer casing, is used to generate a spring force; and The clutch unit is located inside the outer cover and between the torsion spring and the connecting rod. If the door rotates to a preset angle, the spring force of the torsion spring is transmitted to the door to make the door close automatically. If the door reaches a preset open position, the door is stopped.

2. The automatic door reset hinge device according to claim 1, characterized in that, The clutch unit includes: An external component is fixed to the inner surface of the outer cover, and a recessed first groove is formed on its inner surface; An internal component is inserted into the inner surface of the external component, forming a slot portion that connects to the lower end of the torsion spring; A shaft, inserted into the internal component, having a second recessed portion, is connected to a connecting rod; and Two roller balls are selectively inserted into the first and second grooves, transmitting the spring force of the torsion spring to the shaft only within a preset angle range. A stop groove is formed at the edge of the second groove so that the door is stopped when the roller ball is inserted.

3. The automatic door reset hinge device according to claim 2, characterized in that, The size of the stop groove is relatively smaller than the size of the second groove. If the roller ball is inserted into the stop groove, the shaft is locked by the roller ball, so that the door remains stopped.

4. The automatic door reset hinge device according to claim 2, characterized in that, If the roller ball is inserted into the second groove of the shaft, the spring force of the torsion spring acts on the shaft, thereby forming an automatic closing section. If the roller ball is inserted into the stop groove of the shaft, a stop section is formed. If the roller ball disengages from the second groove and the stop groove of the shaft, the elastic force will not act on the free area of ​​the door.

5. The automatic door reset hinge device according to claim 2, characterized in that, An inclined face is formed on both sides of the first groove of the external component, with the inner diameter gradually decreasing as it moves away from the first groove.

6. The automatic door reset hinge device according to claim 5, characterized in that, If the roller ball disengages from the first groove and rolls along the inclined surface, the door will automatically close. If the roller ball reaches the end of the inclined surface, the door will stop due to the elastic force not acting on it.

7. The automatic door reset hinge device according to claim 5, characterized in that, The diameter L1 of the roller ball is greater than the distance L2 from the second groove of the shaft to the inner surface of the outer component, so that the roller ball does not roll on the inner surface of the outer component, but only rolls to the end portion of the inclined surface.

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