Door stopper

Abstract

The present invention provides a door stopper device that is aesthetically pleasing and allows the door to be kept open or released simply by opening and closing the door. [Solution] The present invention is a door stopper device 1 for holding a door D in an open position. The door stopper device 1 includes a floor-side mechanism 2 provided on the floor surface F and a door-side mechanism 3 provided so as to be exposed only on the bottom surface D1 of the door D. The floor-side mechanism 2 includes a flap 4, at least a portion of which is made of a magnetic material. The door-side mechanism 3 includes a rectangular parallelepiped case 6 extending in the door width direction b, a magnet 7 that attracts the flap 4, a lock pin 8 that protrudes downward from the case 6 and engages with the flap 4, a cam mechanism 9 for controlling the vertical position of the lock pin 8, and a trigger 10 that activates the cam mechanism 9 when the door D moves in the opening direction a1. The magnet 7, the lock pin 8, and the trigger 10 are arranged in parallel inside the case 6 along the door width direction b.

Description

Technical Field

[0001] The present invention relates to a door stopper device for holding a door in an open state.

Background Art

[0002] Conventionally, a door stopper device for holding a door in an open state has been known. For example, Patent Document 1 below proposes a door stopper that holds the door in an open state when the user operates an operation unit.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, the door stopper of Patent Document 1 requires the user to bend down and operate the operation unit in addition to the opening and closing operation of the door, and there has been a demand for a door stopper device that can change the holding and release of the open state of the door only by the opening and closing operation of the door. In addition, the door stopper of Patent Document 1 is attached to the side surface of the door, and there has also been a demand for improvement in terms of design.

[0005] The present invention has been devised in view of the above actual situation, and it is a main object to provide a door stopper device that is excellent in design and can change the holding and release of the open state of the door only by the opening and closing operation of the door.

Means for Solving the Problems

[0006] The present invention relates to a door stopper device for holding a door open, comprising a floor-side mechanism provided on the floor surface and a door-side mechanism provided so as to be exposed only on the bottom surface of the door, wherein the floor-side mechanism includes a flap, at least a portion of which is made of a magnetic material, and the door-side mechanism includes a rectangular parallelepiped-shaped case extending in the door width direction, which is perpendicular to the door thickness direction and the vertical direction of the door, a magnet for attracting the flap, a locking pin that protrudes downward from the case and engages with the flap, and a mechanism for controlling the vertical position of the locking pin. The door stopper device includes a locking mechanism and a trigger that activates the cam mechanism when the door moves in the opening direction, wherein the locking pin is movable between a first position housed inside the case and a second position protruding downward from the case, the cam mechanism holds the locking pin in the first or second position, and the trigger, when pressed by the flap, activates the cam mechanism to change the position of the locking pin, and the magnet, the locking pin and the trigger are arranged in parallel along the door width direction inside the case. [Effects of the Invention]

[0007] The door stopper device of the present invention, having the above-described configuration, can change between holding and releasing the door in the open state simply by opening and closing the door. [Brief explanation of the drawing]

[0008] [Figure 1] This is a partial cross-sectional perspective view showing one embodiment of a door equipped with the door stopper device of the present invention. [Figure 2] This is an exploded perspective view of the door mechanism. [Figure 3] This is a cross-sectional view of the door-side mechanism. [Figure 4] This is a cross-sectional view of line AA in Figure 3, showing the first state. [Figure 5] This is a cross-sectional view of line BB in Figure 3, showing the first state. [Figure 6] This is a cross-sectional view of the CC line in Figure 3, showing the first state. [Figure 7] This is a cross-sectional view of line AA in Figure 3, showing the second state. [Figure 8] This is a cross-sectional view of line BB in Figure 3, showing the second state. [Figure 9] This is a cross-sectional view of the CC line in Figure 3, showing the second state. [Figure 10] This is a cross-sectional view of line AA in Figure 3, showing the third state. [Figure 11] This is a cross-sectional view of line BB in Figure 3, showing the third state. [Figure 12] This is a cross-sectional view of the CC line in Figure 3, showing the third state. [Figure 13] This is a cross-sectional view of line AA in Figure 3, showing the fourth state. [Figure 14] This is a cross-sectional view of line BB in Figure 3, showing the fourth state. [Figure 15] This is a cross-sectional view of the CC line in Figure 3, showing the fourth state. [Modes for carrying out the invention]

[0009] One embodiment of the present invention will be described in detail below with reference to the drawings. Figure 1 is a partial cross-sectional perspective view showing a door D equipped with the door stopper device 1 of this embodiment. As shown in Figure 1, the door stopper device 1 of this embodiment is for holding the door D in an open position.

[0010] The door stopper device 1 of this embodiment includes a floor-side mechanism 2 provided on the floor surface F and a door-side mechanism 3 provided so as to be exposed only on the bottom surface D1 of the door D. It is desirable that the door-side mechanism 3 has no exposed portion in the door thickness direction a and door width direction b of the door D. Such a door-side mechanism 3 has less visible portion during normal use and is aesthetically pleasing. Here, the door thickness direction a is the opening and closing direction of the door D, and in Figure 1, the direction towards the front is the opening direction a1 and the direction towards the back is the closing direction a2. The door width direction b is the direction perpendicular to the door thickness direction a and the vertical direction c.

[0011] The floor-side mechanism part 2 of this embodiment includes a flap 4 formed of a magnetic material at least in part, and a base 5 that holds the flap 4. The flap 4 is, for example, rotatably held by the base 5. The flap 4 preferably has an opening 4a for engaging with the door-side mechanism part 3. Such a floor-side mechanism part 2 has a small protrusion amount from the floor surface F when the door D is closed and is excellent in design.

[0012] FIG. 2 is an exploded perspective view of the door-side mechanism part 3. As shown in FIG. 2, the door-side mechanism part 3 of this embodiment includes a rectangular parallelepiped-shaped case 6 that extends in the door width direction b. The case 6 is formed of a non-magnetic material such as resin, for example. Such a case 6 can gather the components of the door-side mechanism part 3 inside and facilitates the assembly work to the door D.

[0013] FIG. 3 is a cross-sectional view of the door-side mechanism part 3. As shown in FIGS. 2 and 3, the door-side mechanism part 3 preferably includes a magnet 7 that attracts the flap 4. The magnet 7 is a permanent magnet such as an alnico magnet, a ferrite magnet, or a neodymium magnet, for example. Among these, the magnet 7 is preferably a neodymium magnet. Such a magnet 7 can generate a strong magnetic force for a long period of time.

[0014] The door-side mechanism part 3 of this embodiment includes a lock pin 8 that protrudes downward from the case 6 and engages with the opening 4a of the flap 4. The lock pin 8 of this embodiment is movable between a first position P1 housed inside the case 6 and a second position P2 protruding downward from the case 6. In the second position P2, for example, the tip of the lock pin 8 is located below the upper end of the opening 4a of the flap 4. Such a lock pin 8 can reliably hold the open state of the door D by engaging with the flap 4.

[0015] The door-side mechanism 3 of this embodiment includes a cam mechanism 9 for controlling the vertical position c of the lock pin 8. The cam mechanism 9 of this embodiment holds the lock pin 8 in a first position P1 or a second position P2. Such a cam mechanism 9 can reliably hold the lock pin 8 and has excellent holding accuracy when the door D is in the open position.

[0016] The door-side mechanism 3 of this embodiment includes a trigger 10 that activates a cam mechanism 9 when the door D moves in the opening direction a1. The trigger 10 of this embodiment, when pressed by the flap 4, activates the cam mechanism 9 and changes the position of the lock pin 8. With such a door-side mechanism 3, the open state of the door D can be changed between being held open and released simply by opening and closing the door D.

[0017] In this embodiment, the magnet 7, lock pin 8, and trigger 10 are arranged in parallel along the door width direction b inside the case 6. This door-side mechanism 3 allows for a reduction in the length L1 of the case 6 in the door thickness direction a, and can be placed inside a thin door D, resulting in superior design aesthetics. Therefore, the door stopper device 1 of this embodiment has superior design aesthetics, and the open state of the door D can be changed between being held open and released simply by opening and closing the door D.

[0018] In a more preferred embodiment, the length L1 of the case 6 in the door thickness direction a is 20 mm or less. Such a door-side mechanism 3 can be placed inside a thin door D, and has excellent design qualities. From this viewpoint, the length L1 of the case 6 in the door thickness direction a is more preferably 19 mm or less.

[0019] The length L2 of the door width direction b of case 6 is preferably 5 times or less the length L1 of the door thickness direction a of case 6. Such a case 6 can be formed compactly overall, and the portion exposed to the bottom surface D1 of the door D is also small, thus improving the design. From this viewpoint, the length L2 of the door width direction b of case 6 is more preferably 4 times or less the length L1 of the door thickness direction a of case 6.

[0020] The door-side mechanism 3 includes, for example, a lid member 11 that covers the top surface of the case 6. The lid member 11 is fixed to the case 6 by a plurality of connecting members 12, four in this embodiment. Such a door-side mechanism 3 can protect the internal components of the case 6 even before it is attached to the door D.

[0021] The cam mechanism 9 of this embodiment includes a cam base 13 for moving the lock pin 8, a cam 14 rotatably held on the cam base 13, and a cam rail 15 for maintaining the position of the cam base 13 by meshing with the cam 14. Such a cam mechanism 9 can hold the lock pin 8 in the first position P1 or the second position P2 with a small number of parts, and is cost-effective.

[0022] In this embodiment, the cam base 13 is positioned within the case 6 so as to be movable in the vertical direction c. Preferably, the cam base 13 is held immovably in the door thickness direction a and the door width direction b. The cam base 13 has, for example, a groove 13a that is closed on the lower side for slidably holding the projection 8a of the lock pin 8.

[0023] In this type of cam base 13, the lower end of the groove 13a engages with the projection 8a of the lock pin 8, allowing the lock pin 8 to be lifted by the upward movement of the cam base 13. Furthermore, in this type of groove 13a, if an external force is applied to lift the lock pin 8, the projection 8a slides within the groove 13a, preventing damage to the door-side mechanism 3.

[0024] As shown in Figure 2, the door-side mechanism 3 of this embodiment has a first spring 16 between the case 6 and the cam base 13 that pushes up the cam base 13. Such a first spring 16 can exert a force that positions the cam base 13 upward, and in cooperation with the cam mechanism 9 and trigger 10, can change the position of the cam base 13.

[0025] The door-side mechanism 3 preferably has a second spring 17 between the cam base 13 and the lock pin 8 that pushes down the lock pin 8. Such a second spring 17 can prevent damage to the door-side mechanism 3 by housing the lock pin 8 inside the case 6 when an external force is applied to lift the lock pin 8.

[0026] The cam rail 15 is fixed to the case 6 by, for example, an engaging member 18. The cam rail 15 has a plurality of contact portions 15a, four in this embodiment, which contact the cam 14 that moves in the vertical direction c, thereby rotating the cam 14. With this door-side mechanism 3, the cam 14 rotates due to the opening and closing operation of the door D, and the position of the lock pin 8 can be changed.

[0027] The trigger 10 has, for example, a first inclined surface 10a (shown in Figure 5) that is inclined in the direction a of the door thickness. The cam base 13 preferably has a second inclined surface 13b that contacts the first inclined surface 10a. Such a first inclined surface 10a and second inclined surface 13b have a simple structure and are excellent in reliability, durability, and cost performance.

[0028] In this embodiment, the second inclined surface 13b slides along the first inclined surface 10a as the first spring 16 pushes up the cam base 13. That is, the first spring 16 in this embodiment has the function of bringing the first inclined surface 10a and the second inclined surface 13b into contact. The first inclined surface 10a and the second inclined surface 13b can convert the movement of the trigger 10 in the door thickness direction a into the vertical movement c of the cam base 13.

[0029] Next, the operating state of the door stopper device 1 of this embodiment will be described with reference to Figures 1 to 3. In this embodiment, when the door D moves in the opening direction a1, the flap 4 is lifted by the magnet 7, and the door stopper device 1 enters a first state in which the flap 4 and the trigger 10 come into contact. The first state is, for example, the state in which the flap 4 and the trigger 10 first come into contact when the door D moves in the opening direction a1.

[0030] Figure 4 is a cross-sectional view of line AA in Figure 3 in the first state, Figure 5 is a cross-sectional view of line BB in Figure 3 in the first state, and Figure 6 is a cross-sectional view of line CC in Figure 3 in the first state. As shown in Figures 4 to 6, in the first state, the cam base 13 is pushed up by the first spring 16 and is in its uppermost position.

[0031] As a result, in the first state, the lock pin 8 is in the first position P1 because its projection 8a engages with the lower end of the groove 13a of the cam base 13. Also, in the first state, the trigger 10 is in the position furthest to the opening direction a1 because its first inclined surface 10a is pressed against the second inclined surface 13b of the cam base 13. In the first state, the cam 14 is positioned within a pair of upper contact portions 15a, allowing the cam base 13 to be in its uppermost position.

[0032] In this embodiment, the door stopper device 1 moves from the first state to a second state in which the trigger 10 is pushed in the closing direction a2 by the flap 4 when the door D moves in the opening direction a1. The second state is, for example, the state in which the door D has moved as far as possible in the opening direction a1.

[0033] Figure 7 is a cross-sectional view of line AA in Figure 3 in the second state, Figure 8 is a cross-sectional view of line BB in Figure 3 in the second state, and Figure 9 is a cross-sectional view of line CC in Figure 3 in the second state. As shown in Figures 7 to 9, in the second state, the trigger 10 is pushed into the flap 4, so it is in the position closest to the closing direction a2.

[0034] As a result, in the second state, the cam base 13 is in its lowest position because the second inclined surface 13b is pressed against the first inclined surface 10a of the trigger 10. Also, in the second state, the lock pin 8 is pushed against the cam base 13 via the second spring 17, causing it to protrude from the case 6 and be in its lowest position. In the second state, the cam 14 moves downward together with the cam base 13, contacting one of the lower contact portions 15a, and is in a rotated position compared to the first state.

[0035] In this embodiment, when the door D moves in the closing direction a2 from the second state, the door stopper device 1 enters a third state in which the cam mechanism 9 maintains the lock pin 8 in the second position P2. The third state is, for example, a state in which the door D is held in the open position.

[0036] Figure 10 is a cross-sectional view of line AA in Figure 3 in the third state, Figure 11 is a cross-sectional view of line BB in Figure 3 in the third state, and Figure 12 is a cross-sectional view of line CC in Figure 3 in the third state. As shown in Figures 10 to 12, in the third state, the cam 14 contacts the upper contact portion 15a, thereby maintaining the cam base 13 in the lower position.

[0037] In the third state, the cam base 13 is positioned between the position of the first state and the position of the second state. As a result, the lock pin 8 in the third state is maintained in the second position P2, with its tip located within the opening 4a of the flap 4. Also, in the third state, the trigger 10 is positioned between the position of the first state and the position of the second state, as the first inclined surface 10a is pressed against the second inclined surface 13b of the cam base 13. In the third state, the cam 14 is in contact with the upper contact portion 15a and is in a rotated position compared to the second state.

[0038] In this embodiment, the door stopper device 1 moves from the third state to the fourth state, where the trigger 10 is pushed in the closing direction a2 by the flap 4 as the door D moves in the opening direction a1. The fourth state is, for example, the state in which the door D has moved as far as it will in the opening direction a1, similar to the second state, and is the same as the second state except for the angle of the cam 14.

[0039] Figure 13 is a cross-sectional view of line AA in Figure 3 in the fourth state, Figure 14 is a cross-sectional view of line BB in Figure 3 in the fourth state, and Figure 15 is a cross-sectional view of line CC in Figure 3 in the fourth state. As shown in Figures 13 to 15, in the fourth state, similar to the second state, the trigger 10 is pushed into the flap 4, so it is in the position closest to the closed direction a2.

[0040] As a result, in the fourth state, the cam base 13 is in its lowest position, similar to the second state, because the second inclined plane 13b is pressed against the first inclined plane 10a of the trigger 10. Similarly, in the fourth state, the lock pin 8 is in its lowest position, similar to the second state, because it is pressed against the cam base 13 via the second spring 17.

[0041] In the fourth state, the cam 14 moves downward together with the cam base 13, contacting one of the lower contact portions 15a, and is in a rotated position compared to the third state. In this embodiment, when the door D moves in the closing direction a2 after the fourth state, the cam 14 rotates by contacting one of the upper contact portions 15a, and rises together with the cam base 13 to the position of the first state.

[0042] Although particularly preferred embodiments of the present invention have been described in detail above, the present invention is not limited to the embodiments described above and can be implemented in various modified forms.

[0043] [Note] The present invention is as follows:

[0044] [Invention 1] A door stopper device for holding a door open, A floor-side mechanism provided on the floor surface, It includes a door-side mechanism that is provided so as to be exposed only on the bottom surface of the door, The floor-side mechanism includes a flap, at least a portion of which is made of a magnetic material. The aforementioned door-side mechanism is A case with a rectangular parallelepiped shape extending in the door width direction, which is perpendicular to the door thickness direction and the vertical direction of the door, A magnet that pulls the aforementioned flap, A locking pin that protrudes downward from the case and engages with the flap, A cam mechanism for controlling the vertical position of the lock pin, Includes a trigger that activates the cam mechanism when the door moves in the opening direction, The locking pin is movable between a first position housed inside the case and a second position protruding downward from the case. The cam mechanism holds the lock pin in the first position or the second position, The trigger, when pressed by the flap, activates the cam mechanism to change the position of the lock pin. The magnet, the lock pin, and the trigger are arranged in parallel along the door width direction inside the case. Door stopper.

[0045] [Invention 2] The cam mechanism is, A cam base for moving the aforementioned lock pin, A cam rotatably held on the cam base, A door stopper according to the present invention, further comprising a cam rail for maintaining the position of the cam base by engaging with the cam.

[0046] [Invention 3] The trigger has a first inclined surface that is inclined in the direction of the door thickness, The cam base has a second inclined surface that contacts the first inclined surface, The door stopper device according to the present invention, wherein the first and second inclined surfaces convert the movement of the trigger in the door thickness direction into vertical movement of the cam base.

[0047] [4th Invention] The door-side mechanism has a first spring between the case and the cam base that pushes the cam base up to bring the first inclined surface and the second inclined surface into contact, as described in the present invention, for door stopper device according to the present invention, as described in the present invention, Item 3.

[0048] [5th ​​Invention] The door-side mechanism has a second spring between the cam base and the lock pin that pushes down the lock pin, according to any one of inventions 2 to 4.

[0049] [Invention 6] The door-side mechanism has a lid member that covers the upper surface of the case, according to any one of inventions 1 to 5. [Explanation of Symbols]

[0050] 1. Door stopper 2 Floor side mechanism section 3. Door-side mechanism 4 flaps 6 cases 7 Magnets 8 lock pins 9 Cam mechanism 10 Triggers

Claims

1. A door stopper device for holding a door open, A floor-side mechanism provided on the floor surface, It includes a door-side mechanism that is provided so as to be exposed only on the bottom surface of the door, The floor-side mechanism includes a flap, at least a portion of which is made of a magnetic material. The aforementioned door-side mechanism is A case with a rectangular parallelepiped shape extending in the door width direction, which is perpendicular to the door thickness direction and the vertical direction of the door, A magnet that pulls the aforementioned flap, A locking pin that protrudes downward from the case and engages with the flap, A cam mechanism for controlling the vertical position of the lock pin, Includes a trigger that activates the cam mechanism when the door moves in the opening direction, The locking pin is movable between a first position housed inside the case and a second position protruding downward from the case. The cam mechanism holds the lock pin in the first position or the second position, The trigger, when pressed by the flap, activates the cam mechanism to change the position of the lock pin. The magnet, the lock pin, and the trigger are arranged in parallel along the door width direction inside the case. Door stopper.

2. The cam mechanism is, A cam base for moving the aforementioned lock pin, A cam rotatably held on the cam base, The door stopper device according to claim 1, further comprising a cam rail for maintaining the position of the cam base by engaging with the cam.

3. The trigger has a first inclined surface that is inclined in the direction of the door thickness, The cam base has a second inclined surface that contacts the first inclined surface, The door stopper device according to claim 2, wherein the first and second inclined surfaces convert the movement of the trigger in the door thickness direction into vertical movement of the cam base.

4. The door stopper device according to claim 3, wherein the door-side mechanism has a first spring between the case and the cam base that pushes the cam base up to bring the first inclined surface and the second inclined surface into contact.

5. The door-side mechanism has a second spring between the cam base and the lock pin that pushes down the lock pin, according to any one of claims 2 to 4.

6. The door-side mechanism has a lid member that covers the upper surface of the case, according to any one of claims 1 to 4.

Images