Door opening assist device, method of using door opening assist device

Abstract

To provide a door opening assisting device with a simple structure, capable of reducing an initial opening force in opening a door.SOLUTION: The door opening assisting device comprises: a door side member attached to a door supported in a frame part provided in an opening part of a wall part so as to allow opening / closing of the opening part; and a pressing device attached to either a structure surrounding the frame part or the frame part, which presses the door side member towards an opening side. The door side member has a pressed part provided nearer to a door end than the door and positioned nearer to an opening side in a depth direction than the door. The pressing device includes: an opposing part positioned nearer to a closing side of the door than the pressed part, opposing the pressed part in the depth direction; an operation part connected to the door end side of the opposing part and exposed towards the opening side in the depth direction; and a conversion part that converts a force applied to the operation part in a direction different from the opening side in the depth direction, to a force in the direction in which the opposing part moves towards the opening side in the depth direction.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present disclosure relates to a door opening assist device and a method of using the door opening assist device. [Background technology]

[0002] In apartment buildings and other buildings, improvements in airtightness and insulation performance, as well as 24-hour ventilation, have resulted in a large difference in air pressure between the inside and outside of the building, and there are an increasing number of cases where excessive force is required to open a door. Sometimes, the force applied to the door can be so great that it is difficult for elderly people or small children to open it.

[0003] Patent Document 1 discloses a device that uses a motor, a rack, a pinion, and the like to reduce the opening force required when a door is initially opened. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2010-144373 Summary of the Invention [Problem to be solved by the invention]

[0005] The device described in Patent Document 1 has a problem in that it is large-scale and complex in structure, and installation is time-consuming.

[0006] The present disclosure has been made in consideration of the above points, and aims to provide a door opening assist device and a method of using the door opening assist device that have a simple structure and can reduce the initial opening force when opening a door. [Means for solving the problem]

[0007] A first aspect of the present disclosure is a door opening assist device comprising: a door side member attached to a frame provided in an opening in a wall portion, the door being supported so as to be able to open and close the opening; and a pressing device attached to either a structure surrounding the frame portion or the frame portion and pressing the door side member toward the open side, wherein the door side member is positioned closer to the door edge than the door and has a pressed portion located on the opening side in a front direction than the door, and the pressing device has an opposing portion located on the closing side of the door than the pressed portion and facing the pressed portion in the front direction, an operating portion connected to the door edge side of the opposing portion and exposed on the opening side in the front direction, and a conversion portion that converts a force applied to the operating portion in a direction different from the opening side in the front direction into a force in a direction in which the opposing portion faces the opening side in the front direction. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a front view showing a door opening assist device according to a first embodiment provided on a door and a wall. [Figure 2] 1 is a perspective view of the appearance of a door opening assist device according to a first embodiment. [Figure 3] 1 is a horizontal cross-sectional view of a door opening assist device of a first embodiment provided on a door and a wall. [Figure 4] FIG. 10 is a front view of a door opening assist device according to a second embodiment, which is provided on a door and a wall. [Figure 5] FIG. 10 is an external perspective view of a door opening assist device according to a second embodiment. [Figure 6] 10 is a vertical cross-sectional view of a door opening assist device according to a second embodiment, the device being provided on a door and a wall. FIG. [Figure 7] FIG. 4 is a front view showing a modified example of the door opening assist device of the first embodiment. [Figure 8] FIG. 10 is an external perspective view showing a modified example of the door opening assist device of the second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments of the door opening assist device and method of using the door opening assist device of the present disclosure will be described with reference to Figures 1 to 8. The following embodiment shows one aspect of the present disclosure, does not limit the disclosure, and can be modified as desired within the scope of the technical idea of ​​the present disclosure. In the following drawings, the scale and number of each structure are different from the actual structure to make each configuration easier to understand.

[0010] [First embodiment] As shown in Fig. 1, a door opening assist device 1 according to the first embodiment is provided on a door 2 and a wall 11 of a building. The door 2 is, for example, a front door. The wall 11 corresponds to a structure surrounding a frame 3.

[0011] In the following description, the horizontal direction along the wall 11 on which the door 2 is provided is referred to as the left-right direction, and the direction between the top and bottom is referred to as the up-down direction. The direction perpendicular to the left-right direction and along the indoor-outdoor direction is referred to as the front direction.

[0012] The door 2 is supported by a frame 3 provided in an opening 12 of a wall 11 so as to be able to open and close the opening 12. The door 2 is supported by the frame 3 on the right side. The left side of the door 2 is the door edge side. The open side of the door 2 faces outdoors in the front direction. The door 2 has a handle lever 13. The latch is unlocked and locked by operating the handle lever 13.

[0013] The door opening assist device 1 assists the opening operation of the door 2. The door opening assist device 1 is disposed on the door edge side of the handle lever 13. The door opening assist device 1 has a door side member 20 and a pressing device 30. The door side member 20 is attached to the door 2. As shown in FIG. 2, the door side member 20 has a first portion 21, a second portion 22, and a pressed portion 23. As shown in FIG. 3, the first portion 21 is fixed to the indoor side of the door 2. The first portion 21 is fixed to the side surface 4 of the door 2 on the door edge side located on the indoor side. The second portion 22 extends forward from the first portion 21. The second portion 22 extends to the outdoor side through a gap S1 located closer to the door edge than the door 2, among the gaps between the door 2 and the frame portion 3. The pressed portion 23 is connected to the second portion 22. The pressed portion 23 extends to the left from the tip of the second portion 22 that extends to the outdoor side through the gap S1. The pressed portion 23 extends leftward from the tip of the second portion 22 to a position opposite the frame portion 3 in the front direction. The pressed portion 23 is flat and perpendicular to the front direction. The pressed portion 23 is positioned closer to the door edge than the door 2. The pressed portion 23 is located closer to the opening side in the front direction than the door 2.

[0014] The pressing device 30 is attached to the wall portion 11. The pressing device 30 may be attached to the frame portion 3. The pressing device 30 presses the door side member 20 to the open side. The pressing device 30 includes a handle member 40 and a conversion portion 50.

[0015] The handle member 40 has a facing portion 41 and an operating portion 42. The facing portion 41 and the operating portion 42 are connected in a V-shape. The handle member 40 is rotatable around a rotation axis 53. The rotation axis 53 extends in a direction perpendicular to the front direction. The rotation axis 53 extends in the vertical direction. Before the door 2 is opened after being closed by locking the latch, the facing portion 41 is located on the indoor side, which is the closed side of the door 2, relative to the pressed portion 23. Before the door 2 is opened, the facing portion 41 is arranged parallel to the pressed portion 23 and is located at position P1 facing the pressed portion 23 in the front direction.

[0016] The operation unit 42 extends from the opposing portion 41 toward the left side toward the outdoor side. The operation unit 42 is exposed on the open side in the front direction. The operation unit 42 has a pressing operation surface 42a. The pressing operation surface 42a faces the outdoor side, which is the open side in the front direction. The pressing operation surface 42a is the surface on which pressing is performed from the outdoor side toward the indoor side in the front direction. The maximum distance L11 from the center of the rotation shaft 53 to the operation unit 42 is longer than the maximum distance L12 from the center of the rotation shaft 53 to the opposing portion 41. As shown in FIG. 1, the surface of the operation unit 42 is coated with a soft resin or the like. By coating the surface of the operation unit 42 with a soft resin or the like, the operation unit 42 feels gentle when operated. The covering material of the operation unit 42 is not shown in FIGS. 2 and 3.

[0017] The conversion unit 50 converts a force applied to the operating unit 42 in a direction away from the open side of the projection direction into a force directed toward the open side of the projection direction by the opposing unit 41. The conversion unit 50 converts a force directed toward the indoor side of the projection direction into a force directed toward the outdoor side of the projection direction. The conversion unit 50 has a first hinge unit 51, a second hinge unit 52, and a rotation axis 53.

[0018] The first hinge portion 51 is attached to the wall portion 11. The first hinge portion 51 has two protrusions 51A spaced apart in the vertical direction. The protrusions 51A protrude toward the outdoor side. A rotation shaft 53 is inserted into the protrusions 51A. The second hinge portion 52 is fixed to the indoor side of the opposing portion 41. The second hinge portion 52 has a protrusion 52A protruding toward the indoor side. The protrusion 52A is fitted between the two protrusions 51A. The rotation shaft 53 is inserted into the protrusions 52A. The second hinge portion 52 with the rotation shaft 53 inserted therethrough is rotatable around the rotation shaft 53. The handle member 40 fixed to the second hinge portion 52 is rotatable around the rotation shaft 53.

[0019] The following describes how to use the door opening assist device 1. The door opening assist device 1 is used when opening the door 2 from the outdoor side. When using the door opening assist device 1 to open the door 2 from the outdoor side, the handle lever 13 provided on the door 2 is operated to set the latch to an unlocked state before operating the operating unit 42. While the latch is kept unlocked, as shown by the arrow in FIG. 3 , the pressing operation surface 42a of the operating unit 42 of the handle member 40 located at position P1 is pressed, for example, by hand, to apply a force in a direction from the outdoor side to the indoor side. Because the operating unit 42 is located on the door edge side of the handle lever 13, both the handle lever 13 and the operating unit 42 can be easily operated by hand. When a force in a direction toward the indoor side is applied to the operating unit 42, the handle member 40 rotates counterclockwise around the rotation axis 53 and moves as shown by the two-dot chain line in FIG. 3 . As the handle member 40 rotates, the force applied to the operating portion 42 in a direction from the outdoor side to the indoor side is converted into a force in a direction from the indoor side to the outdoor side at the opposing portion 41. The tip of the opposing portion 41 of the rotated handle member 40 moves from position P1 to position P2 on the outdoor side, and presses the pressed portion 23 from the indoor side to the outdoor side. The pressed portion 23, pressed to the outdoor side by the opposing portion 41, moves to the outdoor side together with the door 2.

[0020] When closed, the door 2 is kept airtight by the airtight material 2A. The airtight material 2A keeps the door 2 airtight over a distance L1 in the forward direction. When the handle member 40 is rotated, the pressed portion 23, which is pressed toward the outdoors by the opposing portion 41, moves toward the outdoors along with the door 2 by a distance L2 in the forward direction. Distance L2 is longer than distance L1. The airtightness of the door 2 using the airtight material 2A can be released by making the moving distance L2 of the pressed portion 23 and the door 2 in the forward direction longer than the airtight length L1. After the door 2 has been released from airtightness, the door 2 is moved toward the outdoors via the handle lever 13, which has been maintaining the latch in an unlocked state. Because the door 2 is no longer airtight, the door 2 can be easily moved toward the outdoors.

[0021] The ratio L11 / L12 of the maximum distance L11 from the axial center of the rotating shaft 53 to the operating unit 42 to the maximum distance L12 from the axial center of the rotating shaft 53 to the opposing portion 41 is, for example, approximately 3 to 5. By setting the ratio L11 / L12 to approximately 3 to 5, it is possible to apply a force that is approximately three to five times the force applied to the pressing operation surface 42a to the pressed portion 23 and the door 2 in the opening direction. By setting the ratio L11 / L12 to a value greater than 1, it is possible to release the airtightness of the door 2 simply by pressing the operating unit 42 a distance that is shorter than the airtight length L1.

[0022] When the door opening assist device 1 of the embodiment is used, the initial opening force required to open the door 2 can be reduced with a simple structure. In the door opening assist device 1, the maximum distance from the axial center of the rotation shaft 53 to the operating unit 42 is longer than the maximum distance from the axial center of the rotation shaft 53 to the opposing portion 41, so a force greater than the force applied to the operating unit 42 can be applied to the pressed portion 23 and the door 2. When the door opening assist device 1 is used, the airtight seal of the door 2 can be easily released and opened with a small force. When the door opening assist device 1 is used, the airtight seal of the door 2 can be easily released and opened by pressing the operating unit 42 a short distance.

[0023] [Second embodiment] A second embodiment of the door opening assist device 1 will be described with reference to Figures 4 to 6. In these figures, the same elements as those in the first embodiment shown in Figures 1 to 3 are designated by the same reference numerals, and their description will be omitted.

[0024] As shown in Fig. 4, the door opening assist device 1 has a door side member 20 attached to the underside of the door 2. The door opening assist device 1 has a pressing device 30 attached to a floor portion 5. The floor portion 5 corresponds to a structure.

[0025] As shown in Figures 5 and 6, the door side member 20 has a third portion 24 and a fourth portion 25. The third portion 24 is fixed to the indoor side of the door 2. The fourth portion 25 extends from the third portion 24 to the outdoor side through a gap S2 located below the door 2. The pressed portion 23 is connected to the fourth portion 25. The pressed portion 23 extends upward from the tip of the fourth portion 25 that extends to the outdoor side through the gap S2. The pressed portion 23 has an extending portion 23a at its upper end. The extending portion 23a extends to the left side to a position facing the frame portion 3 in the front direction.

[0026] The pressing device 30 includes a foot operating member 43 and a conversion unit 50. The foot operating member 43 has an opposing portion 44 and an operating portion 45. The opposing portion 44 and the operating portion 45 are connected in an L-shape. The foot operating member 43 is rotatable around a rotation axis 53. The rotation axis 53 extends in a direction perpendicular to the front direction. The rotation axis 53 extends in the left-right direction. Before the door 2 is opened, when the door 2 is closed by locking the latch, the opposing portion 44 is located on the indoor side, which is the closed side of the door 2, relative to the pressed portion 23. Before the door 2 is opened, the opposing portion 44 is arranged parallel to the pressed portion 23 and is located at position P1 facing the extension portion 23a of the pressed portion 23 in the front direction.

[0027] The operating unit 45 extends from the lower end of the opposing unit 44 toward the outdoors. The operating unit 45 has a pressing operation surface 45a. The pressing operation surface 45a faces upward. The pressing operation surface 45a is a surface on which pressing is performed from the top to the bottom. Although not shown in the figure, the maximum distance from the axial center of the rotating shaft 53 to the operating unit 45 is longer than the maximum distance from the axial center of the rotating shaft 53 to the opposing unit 44.

[0028] The conversion unit 50 converts a force applied to the operating unit 45 in a direction other than the opening side in the projection direction into a force in the opposing unit 44 directed toward the opening side in the projection direction. The conversion unit 50 converts a force directed downward into a force directed toward the outdoor side in the projection direction. The conversion unit 50 has a first hinge unit 51, a second hinge unit 52, and a rotation axis 53. The first hinge unit 51 is attached to the floor unit 5. The second hinge unit 52 is fixed to the indoor side of the underside of the operating unit 45.

[0029] When using the door opening assist device 1 to open the door 2 from the outdoor side, the handle lever 13 provided on the door 2 is operated to set the latch to an unlocked state before operating the operation unit 45. While maintaining the latch in the unlocked state, as shown by the arrows in FIGS. 5 and 6 , the foot operates the pressing operation surface 45a of the operation unit 45 of the foot operation member 43 located at position P1, for example, by stepping on it with the foot to apply a force in a direction from top to bottom. Because the operation unit 45 is located close to the floor 5, both the operation of the handle lever 13 with the hand and the operation of the operation unit 45 with the foot can be easily performed. When a downward force is applied to the operation unit 45, the foot operation member 43 rotates counterclockwise around the rotation axis 53 and moves as shown by the two-dot chain line in FIG. 6 . By rotating the foot operation member 43, the force applied in a direction from top to bottom at the operation unit 45 is converted into a force in a direction from the indoor side to the outdoor side at the opposing portion 44. The tip of the opposing portion 44 of the rotated foot-operated member 43 moves to position P2, which is closer to the outdoors than position P1, and presses the pressed portion 23 from the indoor side toward the outdoors. The pressed portion 23, pressed to the outdoors side by the opposing portion 44, moves to the outdoors side together with the door 2. The distance that the pressed portion 23 moves to the outdoors side together with the door 2 is the distance over which the airtightness of the door 2 is released.

[0030] Since the maximum distance from the axial center of the rotating shaft 53 to the operating part 45 is longer than the maximum distance from the axial center of the rotating shaft 53 to the opposing part 44, a force greater than the force applied to the pressing operation surface 45a can be applied to the pressed part 23 and the door 2 on the opening side.

[0031] When the door opening assist device 1 of this embodiment is used, the same actions and effects as those of the first embodiment are obtained, and in addition, operation with the feet, which can apply greater force than with the hands, becomes possible, making it even easier to open the door 2.

[0032] [Modification of the first embodiment] As shown in Fig. 7, in the door opening assist device 1 according to the modification of the first embodiment, the door side member 20 and the pushing device 30 are arranged at a position closer to the underside of the door 2 than the handle lever 13. In this modification, in addition to obtaining the same functions and effects as those of the first embodiment, it is possible to operate the door by kicking with the feet, which is easier to apply a larger force than with the hands, making it easier to open the door 2.

[0033] [Modification of the second embodiment] As shown in FIG. 8, in the door opening assist device 1 according to the modification of the second embodiment, the foot operating member 43 has an auxiliary plate 46. The auxiliary plate 46 is arranged above the operating unit 45 at a distance. The auxiliary plate 46 is connected to the operating unit 45 at the end on the indoor side in the forward direction. In this modification, in addition to obtaining the same functions and effects as the second embodiment, the impact when the foot comes into contact with the operating unit 45 can be reduced because the foot steps on the operating unit 45 via the auxiliary plate 46 arranged at a distance from the operating unit 45.

[0034] While preferred embodiments of the present disclosure have been described above with reference to the accompanying drawings, it goes without saying that the present disclosure is not limited to these examples. The shapes and combinations of the components shown in the above examples are merely examples, and various modifications can be made based on design requirements, etc., without departing from the spirit of the present disclosure.

[0035] In the above embodiment, examples of the door opening assist device 1 that can be operated by hand, kicked by foot, and stepped on are given, but the configuration may also include multiple types of door opening assist device 1 that can be operated by hand, kicked by foot, and stepped on. [Explanation of symbols]

[0036] 1...door opening assist device, 2...door, 3...frame portion, 5...floor portion, 11...wall portion, 12...opening portion, 13...handle lever, 20...door side member, 21...first portion, 22...second portion, 23...pressed portion, 24...third portion, 25...fourth portion, 30...pressing device, 41, 44...opposing portion, 42, 45...operating portion, 42a, 45a...pressing operation surface, 50...conversion portion, S1, S2...gap

Claims

1. a door side member attached to a frame portion provided in the opening of the wall portion, the door being supported so as to be able to open and close the opening; a pressing device attached to either a structure surrounding the frame portion or the frame portion, and configured to press the door-side member toward an opening side; Equipped with The door side member has a pressed portion that is arranged on the door edge side of the door and is located on the opening side of the door in the projection direction, The pressing device is an opposing portion located on the closing side of the door relative to the pressed portion and opposing the pressed portion in a projection direction; An operating unit connected to the door tip side of the opposing part and exposed to the open side in the projection direction; A conversion unit that converts a force applied to the operation unit in a direction different from the open side of the projection direction into a force in a direction toward the open side of the projection direction by the opposing unit; A door opening assist device having:

2. When the opposing portion and the operating portion rotate around a rotation axis perpendicular to the projection direction, the conversion portion converts the force in a direction different from the open side into the force in a direction toward the open side. The door opening assist device according to claim 1.

3. The door has a handle lever, The rotation shaft extends in the vertical direction, The door side member and the pressing device are disposed on the door end side of the handle lever. The door opening assist device according to claim 2.

4. The door has a handle lever, The rotation shaft extends in the vertical direction, The door side member and the pressing device are disposed at positions closer to the bottom surface of the door than the handle lever. The door opening assist device according to claim 2.

5. The door side member is a first portion fixed to the interior side of the door; a second portion extending from the first portion to the outside through a gap between the door and the frame portion, the second portion being located closer to the door edge than the door; and The pressed portion is connected to the second portion.

5. The door opening assist device according to claim 3 or 4.

6. The operation unit has a pressing operation surface facing the open side in the projection direction, 5. The door opening assist device according to claim 3 or 4.

7. The rotation axis extends horizontally, The conversion unit is attached to a floor as the structure. The door opening assist device according to claim 2.

8. The door side member is a third portion fixed to the interior side of the door; a fourth portion extending from the third portion to the outside through a gap located below the door; and The pressed portion is connected to the fourth portion. The door opening assist device according to claim 7.

9. The operation unit has a pressing operation surface facing upward. The door opening assist device according to claim 7 or 8.

10. The maximum distance from the axis center of the rotation shaft to the operation unit is longer than the maximum distance from the axis center of the rotation shaft to the opposing unit. The door opening assist device according to claim 2.

11. a door side member attached to a frame portion provided in an opening portion of a wall portion so as to be able to open and close the opening portion, and which is locked and unlocked by a latch; a pressing device attached to either a structure surrounding the frame portion or the frame portion, and configured to press the door-side member toward an opening side; Equipped with The door side member has a pressed portion that is arranged on the door edge side of the door and is located on the opening side of the door in the projection direction, The pressing device is an opposing portion located on the closing side of the door relative to the pressed portion and opposing the pressed portion in a projection direction; An operating unit connected to the door tip side of the opposing part and exposed to the open side in the projection direction; A conversion unit that converts a force applied to the operation unit in a direction different from the open side of the projection direction into a force in a direction toward the open side of the projection direction by the opposing unit; A door opening assist device having Before operating the operation unit, a handle lever provided on the door is operated to put the latch into an unlocked state; In the unlocked state, applying the force to the operation unit in a direction different from the opening side of the projection direction; The direction of the force applied to the operation unit is converted by the conversion unit into the force in a direction toward the opening side of the projection direction; The force converted into a direction toward the opening side of the door in the projection direction causes the opposing portion to press the pressed portion from the closing side of the door to the opening side, thereby moving the door. A method for using a door opening assist device, comprising:

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